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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * forcedeth: Ethernet driver for NVIDIA nForce media access controllers.
4 *
5 * Note: This driver is a cleanroom reimplementation based on reverse
6 * engineered documentation written by Carl-Daniel Hailfinger
7 * and Andrew de Quincey.
8 *
9 * NVIDIA, nForce and other NVIDIA marks are trademarks or registered
10 * trademarks of NVIDIA Corporation in the United States and other
11 * countries.
12 *
13 * Copyright (C) 2003,4,5 Manfred Spraul
14 * Copyright (C) 2004 Andrew de Quincey (wol support)
15 * Copyright (C) 2004 Carl-Daniel Hailfinger (invalid MAC handling, insane
16 * IRQ rate fixes, bigendian fixes, cleanups, verification)
17 * Copyright (c) 2004,2005,2006,2007,2008,2009 NVIDIA Corporation
18 *
19 * Known bugs:
20 * We suspect that on some hardware no TX done interrupts are generated.
21 * This means recovery from netif_stop_queue only happens if the hw timer
22 * interrupt fires (100 times/second, configurable with NVREG_POLL_DEFAULT)
23 * and the timer is active in the IRQMask, or if a rx packet arrives by chance.
24 * If your hardware reliably generates tx done interrupts, then you can remove
25 * DEV_NEED_TIMERIRQ from the driver_data flags.
26 * DEV_NEED_TIMERIRQ will not harm you on sane hardware, only generating a few
27 * superfluous timer interrupts from the nic.
28 */
29
30#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
31
32#define FORCEDETH_VERSION "0.64"
33#define DRV_NAME "forcedeth"
34
35#include <linux/module.h>
36#include <linux/types.h>
37#include <linux/pci.h>
38#include <linux/interrupt.h>
39#include <linux/netdevice.h>
40#include <linux/etherdevice.h>
41#include <linux/delay.h>
42#include <linux/sched.h>
43#include <linux/spinlock.h>
44#include <linux/ethtool.h>
45#include <linux/timer.h>
46#include <linux/skbuff.h>
47#include <linux/mii.h>
48#include <linux/random.h>
49#include <linux/if_vlan.h>
50#include <linux/dma-mapping.h>
51#include <linux/slab.h>
52#include <linux/uaccess.h>
53#include <linux/prefetch.h>
54#include <linux/u64_stats_sync.h>
55#include <linux/io.h>
56
57#include <asm/irq.h>
58
59#define TX_WORK_PER_LOOP NAPI_POLL_WEIGHT
60#define RX_WORK_PER_LOOP NAPI_POLL_WEIGHT
61
62/*
63 * Hardware access:
64 */
65
66#define DEV_NEED_TIMERIRQ 0x0000001 /* set the timer irq flag in the irq mask */
67#define DEV_NEED_LINKTIMER 0x0000002 /* poll link settings. Relies on the timer irq */
68#define DEV_HAS_LARGEDESC 0x0000004 /* device supports jumbo frames and needs packet format 2 */
69#define DEV_HAS_HIGH_DMA 0x0000008 /* device supports 64bit dma */
70#define DEV_HAS_CHECKSUM 0x0000010 /* device supports tx and rx checksum offloads */
71#define DEV_HAS_VLAN 0x0000020 /* device supports vlan tagging and striping */
72#define DEV_HAS_MSI 0x0000040 /* device supports MSI */
73#define DEV_HAS_MSI_X 0x0000080 /* device supports MSI-X */
74#define DEV_HAS_POWER_CNTRL 0x0000100 /* device supports power savings */
75#define DEV_HAS_STATISTICS_V1 0x0000200 /* device supports hw statistics version 1 */
76#define DEV_HAS_STATISTICS_V2 0x0000400 /* device supports hw statistics version 2 */
77#define DEV_HAS_STATISTICS_V3 0x0000800 /* device supports hw statistics version 3 */
78#define DEV_HAS_STATISTICS_V12 0x0000600 /* device supports hw statistics version 1 and 2 */
79#define DEV_HAS_STATISTICS_V123 0x0000e00 /* device supports hw statistics version 1, 2, and 3 */
80#define DEV_HAS_TEST_EXTENDED 0x0001000 /* device supports extended diagnostic test */
81#define DEV_HAS_MGMT_UNIT 0x0002000 /* device supports management unit */
82#define DEV_HAS_CORRECT_MACADDR 0x0004000 /* device supports correct mac address order */
83#define DEV_HAS_COLLISION_FIX 0x0008000 /* device supports tx collision fix */
84#define DEV_HAS_PAUSEFRAME_TX_V1 0x0010000 /* device supports tx pause frames version 1 */
85#define DEV_HAS_PAUSEFRAME_TX_V2 0x0020000 /* device supports tx pause frames version 2 */
86#define DEV_HAS_PAUSEFRAME_TX_V3 0x0040000 /* device supports tx pause frames version 3 */
87#define DEV_NEED_TX_LIMIT 0x0080000 /* device needs to limit tx */
88#define DEV_NEED_TX_LIMIT2 0x0180000 /* device needs to limit tx, expect for some revs */
89#define DEV_HAS_GEAR_MODE 0x0200000 /* device supports gear mode */
90#define DEV_NEED_PHY_INIT_FIX 0x0400000 /* device needs specific phy workaround */
91#define DEV_NEED_LOW_POWER_FIX 0x0800000 /* device needs special power up workaround */
92#define DEV_NEED_MSI_FIX 0x1000000 /* device needs msi workaround */
93
94enum {
95 NvRegIrqStatus = 0x000,
96#define NVREG_IRQSTAT_MIIEVENT 0x040
97#define NVREG_IRQSTAT_MASK 0x83ff
98 NvRegIrqMask = 0x004,
99#define NVREG_IRQ_RX_ERROR 0x0001
100#define NVREG_IRQ_RX 0x0002
101#define NVREG_IRQ_RX_NOBUF 0x0004
102#define NVREG_IRQ_TX_ERR 0x0008
103#define NVREG_IRQ_TX_OK 0x0010
104#define NVREG_IRQ_TIMER 0x0020
105#define NVREG_IRQ_LINK 0x0040
106#define NVREG_IRQ_RX_FORCED 0x0080
107#define NVREG_IRQ_TX_FORCED 0x0100
108#define NVREG_IRQ_RECOVER_ERROR 0x8200
109#define NVREG_IRQMASK_THROUGHPUT 0x00df
110#define NVREG_IRQMASK_CPU 0x0060
111#define NVREG_IRQ_TX_ALL (NVREG_IRQ_TX_ERR|NVREG_IRQ_TX_OK|NVREG_IRQ_TX_FORCED)
112#define NVREG_IRQ_RX_ALL (NVREG_IRQ_RX_ERROR|NVREG_IRQ_RX|NVREG_IRQ_RX_NOBUF|NVREG_IRQ_RX_FORCED)
113#define NVREG_IRQ_OTHER (NVREG_IRQ_TIMER|NVREG_IRQ_LINK|NVREG_IRQ_RECOVER_ERROR)
114
115 NvRegUnknownSetupReg6 = 0x008,
116#define NVREG_UNKSETUP6_VAL 3
117
118/*
119 * NVREG_POLL_DEFAULT is the interval length of the timer source on the nic
120 * NVREG_POLL_DEFAULT=97 would result in an interval length of 1 ms
121 */
122 NvRegPollingInterval = 0x00c,
123#define NVREG_POLL_DEFAULT_THROUGHPUT 65535 /* backup tx cleanup if loop max reached */
124#define NVREG_POLL_DEFAULT_CPU 13
125 NvRegMSIMap0 = 0x020,
126 NvRegMSIMap1 = 0x024,
127 NvRegMSIIrqMask = 0x030,
128#define NVREG_MSI_VECTOR_0_ENABLED 0x01
129 NvRegMisc1 = 0x080,
130#define NVREG_MISC1_PAUSE_TX 0x01
131#define NVREG_MISC1_HD 0x02
132#define NVREG_MISC1_FORCE 0x3b0f3c
133
134 NvRegMacReset = 0x34,
135#define NVREG_MAC_RESET_ASSERT 0x0F3
136 NvRegTransmitterControl = 0x084,
137#define NVREG_XMITCTL_START 0x01
138#define NVREG_XMITCTL_MGMT_ST 0x40000000
139#define NVREG_XMITCTL_SYNC_MASK 0x000f0000
140#define NVREG_XMITCTL_SYNC_NOT_READY 0x0
141#define NVREG_XMITCTL_SYNC_PHY_INIT 0x00040000
142#define NVREG_XMITCTL_MGMT_SEMA_MASK 0x00000f00
143#define NVREG_XMITCTL_MGMT_SEMA_FREE 0x0
144#define NVREG_XMITCTL_HOST_SEMA_MASK 0x0000f000
145#define NVREG_XMITCTL_HOST_SEMA_ACQ 0x0000f000
146#define NVREG_XMITCTL_HOST_LOADED 0x00004000
147#define NVREG_XMITCTL_TX_PATH_EN 0x01000000
148#define NVREG_XMITCTL_DATA_START 0x00100000
149#define NVREG_XMITCTL_DATA_READY 0x00010000
150#define NVREG_XMITCTL_DATA_ERROR 0x00020000
151 NvRegTransmitterStatus = 0x088,
152#define NVREG_XMITSTAT_BUSY 0x01
153
154 NvRegPacketFilterFlags = 0x8c,
155#define NVREG_PFF_PAUSE_RX 0x08
156#define NVREG_PFF_ALWAYS 0x7F0000
157#define NVREG_PFF_PROMISC 0x80
158#define NVREG_PFF_MYADDR 0x20
159#define NVREG_PFF_LOOPBACK 0x10
160
161 NvRegOffloadConfig = 0x90,
162#define NVREG_OFFLOAD_HOMEPHY 0x601
163#define NVREG_OFFLOAD_NORMAL RX_NIC_BUFSIZE
164 NvRegReceiverControl = 0x094,
165#define NVREG_RCVCTL_START 0x01
166#define NVREG_RCVCTL_RX_PATH_EN 0x01000000
167 NvRegReceiverStatus = 0x98,
168#define NVREG_RCVSTAT_BUSY 0x01
169
170 NvRegSlotTime = 0x9c,
171#define NVREG_SLOTTIME_LEGBF_ENABLED 0x80000000
172#define NVREG_SLOTTIME_10_100_FULL 0x00007f00
173#define NVREG_SLOTTIME_1000_FULL 0x0003ff00
174#define NVREG_SLOTTIME_HALF 0x0000ff00
175#define NVREG_SLOTTIME_DEFAULT 0x00007f00
176#define NVREG_SLOTTIME_MASK 0x000000ff
177
178 NvRegTxDeferral = 0xA0,
179#define NVREG_TX_DEFERRAL_DEFAULT 0x15050f
180#define NVREG_TX_DEFERRAL_RGMII_10_100 0x16070f
181#define NVREG_TX_DEFERRAL_RGMII_1000 0x14050f
182#define NVREG_TX_DEFERRAL_RGMII_STRETCH_10 0x16190f
183#define NVREG_TX_DEFERRAL_RGMII_STRETCH_100 0x16300f
184#define NVREG_TX_DEFERRAL_MII_STRETCH 0x152000
185 NvRegRxDeferral = 0xA4,
186#define NVREG_RX_DEFERRAL_DEFAULT 0x16
187 NvRegMacAddrA = 0xA8,
188 NvRegMacAddrB = 0xAC,
189 NvRegMulticastAddrA = 0xB0,
190#define NVREG_MCASTADDRA_FORCE 0x01
191 NvRegMulticastAddrB = 0xB4,
192 NvRegMulticastMaskA = 0xB8,
193#define NVREG_MCASTMASKA_NONE 0xffffffff
194 NvRegMulticastMaskB = 0xBC,
195#define NVREG_MCASTMASKB_NONE 0xffff
196
197 NvRegPhyInterface = 0xC0,
198#define PHY_RGMII 0x10000000
199 NvRegBackOffControl = 0xC4,
200#define NVREG_BKOFFCTRL_DEFAULT 0x70000000
201#define NVREG_BKOFFCTRL_SEED_MASK 0x000003ff
202#define NVREG_BKOFFCTRL_SELECT 24
203#define NVREG_BKOFFCTRL_GEAR 12
204
205 NvRegTxRingPhysAddr = 0x100,
206 NvRegRxRingPhysAddr = 0x104,
207 NvRegRingSizes = 0x108,
208#define NVREG_RINGSZ_TXSHIFT 0
209#define NVREG_RINGSZ_RXSHIFT 16
210 NvRegTransmitPoll = 0x10c,
211#define NVREG_TRANSMITPOLL_MAC_ADDR_REV 0x00008000
212 NvRegLinkSpeed = 0x110,
213#define NVREG_LINKSPEED_FORCE 0x10000
214#define NVREG_LINKSPEED_10 1000
215#define NVREG_LINKSPEED_100 100
216#define NVREG_LINKSPEED_1000 50
217#define NVREG_LINKSPEED_MASK (0xFFF)
218 NvRegUnknownSetupReg5 = 0x130,
219#define NVREG_UNKSETUP5_BIT31 (1<<31)
220 NvRegTxWatermark = 0x13c,
221#define NVREG_TX_WM_DESC1_DEFAULT 0x0200010
222#define NVREG_TX_WM_DESC2_3_DEFAULT 0x1e08000
223#define NVREG_TX_WM_DESC2_3_1000 0xfe08000
224 NvRegTxRxControl = 0x144,
225#define NVREG_TXRXCTL_KICK 0x0001
226#define NVREG_TXRXCTL_BIT1 0x0002
227#define NVREG_TXRXCTL_BIT2 0x0004
228#define NVREG_TXRXCTL_IDLE 0x0008
229#define NVREG_TXRXCTL_RESET 0x0010
230#define NVREG_TXRXCTL_RXCHECK 0x0400
231#define NVREG_TXRXCTL_DESC_1 0
232#define NVREG_TXRXCTL_DESC_2 0x002100
233#define NVREG_TXRXCTL_DESC_3 0xc02200
234#define NVREG_TXRXCTL_VLANSTRIP 0x00040
235#define NVREG_TXRXCTL_VLANINS 0x00080
236 NvRegTxRingPhysAddrHigh = 0x148,
237 NvRegRxRingPhysAddrHigh = 0x14C,
238 NvRegTxPauseFrame = 0x170,
239#define NVREG_TX_PAUSEFRAME_DISABLE 0x0fff0080
240#define NVREG_TX_PAUSEFRAME_ENABLE_V1 0x01800010
241#define NVREG_TX_PAUSEFRAME_ENABLE_V2 0x056003f0
242#define NVREG_TX_PAUSEFRAME_ENABLE_V3 0x09f00880
243 NvRegTxPauseFrameLimit = 0x174,
244#define NVREG_TX_PAUSEFRAMELIMIT_ENABLE 0x00010000
245 NvRegMIIStatus = 0x180,
246#define NVREG_MIISTAT_ERROR 0x0001
247#define NVREG_MIISTAT_LINKCHANGE 0x0008
248#define NVREG_MIISTAT_MASK_RW 0x0007
249#define NVREG_MIISTAT_MASK_ALL 0x000f
250 NvRegMIIMask = 0x184,
251#define NVREG_MII_LINKCHANGE 0x0008
252
253 NvRegAdapterControl = 0x188,
254#define NVREG_ADAPTCTL_START 0x02
255#define NVREG_ADAPTCTL_LINKUP 0x04
256#define NVREG_ADAPTCTL_PHYVALID 0x40000
257#define NVREG_ADAPTCTL_RUNNING 0x100000
258#define NVREG_ADAPTCTL_PHYSHIFT 24
259 NvRegMIISpeed = 0x18c,
260#define NVREG_MIISPEED_BIT8 (1<<8)
261#define NVREG_MIIDELAY 5
262 NvRegMIIControl = 0x190,
263#define NVREG_MIICTL_INUSE 0x08000
264#define NVREG_MIICTL_WRITE 0x00400
265#define NVREG_MIICTL_ADDRSHIFT 5
266 NvRegMIIData = 0x194,
267 NvRegTxUnicast = 0x1a0,
268 NvRegTxMulticast = 0x1a4,
269 NvRegTxBroadcast = 0x1a8,
270 NvRegWakeUpFlags = 0x200,
271#define NVREG_WAKEUPFLAGS_VAL 0x7770
272#define NVREG_WAKEUPFLAGS_BUSYSHIFT 24
273#define NVREG_WAKEUPFLAGS_ENABLESHIFT 16
274#define NVREG_WAKEUPFLAGS_D3SHIFT 12
275#define NVREG_WAKEUPFLAGS_D2SHIFT 8
276#define NVREG_WAKEUPFLAGS_D1SHIFT 4
277#define NVREG_WAKEUPFLAGS_D0SHIFT 0
278#define NVREG_WAKEUPFLAGS_ACCEPT_MAGPAT 0x01
279#define NVREG_WAKEUPFLAGS_ACCEPT_WAKEUPPAT 0x02
280#define NVREG_WAKEUPFLAGS_ACCEPT_LINKCHANGE 0x04
281#define NVREG_WAKEUPFLAGS_ENABLE 0x1111
282
283 NvRegMgmtUnitGetVersion = 0x204,
284#define NVREG_MGMTUNITGETVERSION 0x01
285 NvRegMgmtUnitVersion = 0x208,
286#define NVREG_MGMTUNITVERSION 0x08
287 NvRegPowerCap = 0x268,
288#define NVREG_POWERCAP_D3SUPP (1<<30)
289#define NVREG_POWERCAP_D2SUPP (1<<26)
290#define NVREG_POWERCAP_D1SUPP (1<<25)
291 NvRegPowerState = 0x26c,
292#define NVREG_POWERSTATE_POWEREDUP 0x8000
293#define NVREG_POWERSTATE_VALID 0x0100
294#define NVREG_POWERSTATE_MASK 0x0003
295#define NVREG_POWERSTATE_D0 0x0000
296#define NVREG_POWERSTATE_D1 0x0001
297#define NVREG_POWERSTATE_D2 0x0002
298#define NVREG_POWERSTATE_D3 0x0003
299 NvRegMgmtUnitControl = 0x278,
300#define NVREG_MGMTUNITCONTROL_INUSE 0x20000
301 NvRegTxCnt = 0x280,
302 NvRegTxZeroReXmt = 0x284,
303 NvRegTxOneReXmt = 0x288,
304 NvRegTxManyReXmt = 0x28c,
305 NvRegTxLateCol = 0x290,
306 NvRegTxUnderflow = 0x294,
307 NvRegTxLossCarrier = 0x298,
308 NvRegTxExcessDef = 0x29c,
309 NvRegTxRetryErr = 0x2a0,
310 NvRegRxFrameErr = 0x2a4,
311 NvRegRxExtraByte = 0x2a8,
312 NvRegRxLateCol = 0x2ac,
313 NvRegRxRunt = 0x2b0,
314 NvRegRxFrameTooLong = 0x2b4,
315 NvRegRxOverflow = 0x2b8,
316 NvRegRxFCSErr = 0x2bc,
317 NvRegRxFrameAlignErr = 0x2c0,
318 NvRegRxLenErr = 0x2c4,
319 NvRegRxUnicast = 0x2c8,
320 NvRegRxMulticast = 0x2cc,
321 NvRegRxBroadcast = 0x2d0,
322 NvRegTxDef = 0x2d4,
323 NvRegTxFrame = 0x2d8,
324 NvRegRxCnt = 0x2dc,
325 NvRegTxPause = 0x2e0,
326 NvRegRxPause = 0x2e4,
327 NvRegRxDropFrame = 0x2e8,
328 NvRegVlanControl = 0x300,
329#define NVREG_VLANCONTROL_ENABLE 0x2000
330 NvRegMSIXMap0 = 0x3e0,
331 NvRegMSIXMap1 = 0x3e4,
332 NvRegMSIXIrqStatus = 0x3f0,
333
334 NvRegPowerState2 = 0x600,
335#define NVREG_POWERSTATE2_POWERUP_MASK 0x0F15
336#define NVREG_POWERSTATE2_POWERUP_REV_A3 0x0001
337#define NVREG_POWERSTATE2_PHY_RESET 0x0004
338#define NVREG_POWERSTATE2_GATE_CLOCKS 0x0F00
339};
340
341/* Big endian: should work, but is untested */
342struct ring_desc {
343 __le32 buf;
344 __le32 flaglen;
345};
346
347struct ring_desc_ex {
348 __le32 bufhigh;
349 __le32 buflow;
350 __le32 txvlan;
351 __le32 flaglen;
352};
353
354union ring_type {
355 struct ring_desc *orig;
356 struct ring_desc_ex *ex;
357};
358
359#define FLAG_MASK_V1 0xffff0000
360#define FLAG_MASK_V2 0xffffc000
361#define LEN_MASK_V1 (0xffffffff ^ FLAG_MASK_V1)
362#define LEN_MASK_V2 (0xffffffff ^ FLAG_MASK_V2)
363
364#define NV_TX_LASTPACKET (1<<16)
365#define NV_TX_RETRYERROR (1<<19)
366#define NV_TX_RETRYCOUNT_MASK (0xF<<20)
367#define NV_TX_FORCED_INTERRUPT (1<<24)
368#define NV_TX_DEFERRED (1<<26)
369#define NV_TX_CARRIERLOST (1<<27)
370#define NV_TX_LATECOLLISION (1<<28)
371#define NV_TX_UNDERFLOW (1<<29)
372#define NV_TX_ERROR (1<<30)
373#define NV_TX_VALID (1<<31)
374
375#define NV_TX2_LASTPACKET (1<<29)
376#define NV_TX2_RETRYERROR (1<<18)
377#define NV_TX2_RETRYCOUNT_MASK (0xF<<19)
378#define NV_TX2_FORCED_INTERRUPT (1<<30)
379#define NV_TX2_DEFERRED (1<<25)
380#define NV_TX2_CARRIERLOST (1<<26)
381#define NV_TX2_LATECOLLISION (1<<27)
382#define NV_TX2_UNDERFLOW (1<<28)
383/* error and valid are the same for both */
384#define NV_TX2_ERROR (1<<30)
385#define NV_TX2_VALID (1<<31)
386#define NV_TX2_TSO (1<<28)
387#define NV_TX2_TSO_SHIFT 14
388#define NV_TX2_TSO_MAX_SHIFT 14
389#define NV_TX2_TSO_MAX_SIZE (1<<NV_TX2_TSO_MAX_SHIFT)
390#define NV_TX2_CHECKSUM_L3 (1<<27)
391#define NV_TX2_CHECKSUM_L4 (1<<26)
392
393#define NV_TX3_VLAN_TAG_PRESENT (1<<18)
394
395#define NV_RX_DESCRIPTORVALID (1<<16)
396#define NV_RX_MISSEDFRAME (1<<17)
397#define NV_RX_SUBTRACT1 (1<<18)
398#define NV_RX_ERROR1 (1<<23)
399#define NV_RX_ERROR2 (1<<24)
400#define NV_RX_ERROR3 (1<<25)
401#define NV_RX_ERROR4 (1<<26)
402#define NV_RX_CRCERR (1<<27)
403#define NV_RX_OVERFLOW (1<<28)
404#define NV_RX_FRAMINGERR (1<<29)
405#define NV_RX_ERROR (1<<30)
406#define NV_RX_AVAIL (1<<31)
407#define NV_RX_ERROR_MASK (NV_RX_ERROR1|NV_RX_ERROR2|NV_RX_ERROR3|NV_RX_ERROR4|NV_RX_CRCERR|NV_RX_OVERFLOW|NV_RX_FRAMINGERR)
408
409#define NV_RX2_CHECKSUMMASK (0x1C000000)
410#define NV_RX2_CHECKSUM_IP (0x10000000)
411#define NV_RX2_CHECKSUM_IP_TCP (0x14000000)
412#define NV_RX2_CHECKSUM_IP_UDP (0x18000000)
413#define NV_RX2_DESCRIPTORVALID (1<<29)
414#define NV_RX2_SUBTRACT1 (1<<25)
415#define NV_RX2_ERROR1 (1<<18)
416#define NV_RX2_ERROR2 (1<<19)
417#define NV_RX2_ERROR3 (1<<20)
418#define NV_RX2_ERROR4 (1<<21)
419#define NV_RX2_CRCERR (1<<22)
420#define NV_RX2_OVERFLOW (1<<23)
421#define NV_RX2_FRAMINGERR (1<<24)
422/* error and avail are the same for both */
423#define NV_RX2_ERROR (1<<30)
424#define NV_RX2_AVAIL (1<<31)
425#define NV_RX2_ERROR_MASK (NV_RX2_ERROR1|NV_RX2_ERROR2|NV_RX2_ERROR3|NV_RX2_ERROR4|NV_RX2_CRCERR|NV_RX2_OVERFLOW|NV_RX2_FRAMINGERR)
426
427#define NV_RX3_VLAN_TAG_PRESENT (1<<16)
428#define NV_RX3_VLAN_TAG_MASK (0x0000FFFF)
429
430/* Miscellaneous hardware related defines: */
431#define NV_PCI_REGSZ_VER1 0x270
432#define NV_PCI_REGSZ_VER2 0x2d4
433#define NV_PCI_REGSZ_VER3 0x604
434#define NV_PCI_REGSZ_MAX 0x604
435
436/* various timeout delays: all in usec */
437#define NV_TXRX_RESET_DELAY 4
438#define NV_TXSTOP_DELAY1 10
439#define NV_TXSTOP_DELAY1MAX 500000
440#define NV_TXSTOP_DELAY2 100
441#define NV_RXSTOP_DELAY1 10
442#define NV_RXSTOP_DELAY1MAX 500000
443#define NV_RXSTOP_DELAY2 100
444#define NV_SETUP5_DELAY 5
445#define NV_SETUP5_DELAYMAX 50000
446#define NV_POWERUP_DELAY 5
447#define NV_POWERUP_DELAYMAX 5000
448#define NV_MIIBUSY_DELAY 50
449#define NV_MIIPHY_DELAY 10
450#define NV_MIIPHY_DELAYMAX 10000
451#define NV_MAC_RESET_DELAY 64
452
453#define NV_WAKEUPPATTERNS 5
454#define NV_WAKEUPMASKENTRIES 4
455
456/* General driver defaults */
457#define NV_WATCHDOG_TIMEO (5*HZ)
458
459#define RX_RING_DEFAULT 512
460#define TX_RING_DEFAULT 256
461#define RX_RING_MIN 128
462#define TX_RING_MIN 64
463#define RING_MAX_DESC_VER_1 1024
464#define RING_MAX_DESC_VER_2_3 16384
465
466/* rx/tx mac addr + type + vlan + align + slack*/
467#define NV_RX_HEADERS (64)
468/* even more slack. */
469#define NV_RX_ALLOC_PAD (64)
470
471/* maximum mtu size */
472#define NV_PKTLIMIT_1 ETH_DATA_LEN /* hard limit not known */
473#define NV_PKTLIMIT_2 9100 /* Actual limit according to NVidia: 9202 */
474
475#define OOM_REFILL (1+HZ/20)
476#define POLL_WAIT (1+HZ/100)
477#define LINK_TIMEOUT (3*HZ)
478#define STATS_INTERVAL (10*HZ)
479
480/*
481 * desc_ver values:
482 * The nic supports three different descriptor types:
483 * - DESC_VER_1: Original
484 * - DESC_VER_2: support for jumbo frames.
485 * - DESC_VER_3: 64-bit format.
486 */
487#define DESC_VER_1 1
488#define DESC_VER_2 2
489#define DESC_VER_3 3
490
491/* PHY defines */
492#define PHY_OUI_MARVELL 0x5043
493#define PHY_OUI_CICADA 0x03f1
494#define PHY_OUI_VITESSE 0x01c1
495#define PHY_OUI_REALTEK 0x0732
496#define PHY_OUI_REALTEK2 0x0020
497#define PHYID1_OUI_MASK 0x03ff
498#define PHYID1_OUI_SHFT 6
499#define PHYID2_OUI_MASK 0xfc00
500#define PHYID2_OUI_SHFT 10
501#define PHYID2_MODEL_MASK 0x03f0
502#define PHY_MODEL_REALTEK_8211 0x0110
503#define PHY_REV_MASK 0x0001
504#define PHY_REV_REALTEK_8211B 0x0000
505#define PHY_REV_REALTEK_8211C 0x0001
506#define PHY_MODEL_REALTEK_8201 0x0200
507#define PHY_MODEL_MARVELL_E3016 0x0220
508#define PHY_MARVELL_E3016_INITMASK 0x0300
509#define PHY_CICADA_INIT1 0x0f000
510#define PHY_CICADA_INIT2 0x0e00
511#define PHY_CICADA_INIT3 0x01000
512#define PHY_CICADA_INIT4 0x0200
513#define PHY_CICADA_INIT5 0x0004
514#define PHY_CICADA_INIT6 0x02000
515#define PHY_VITESSE_INIT_REG1 0x1f
516#define PHY_VITESSE_INIT_REG2 0x10
517#define PHY_VITESSE_INIT_REG3 0x11
518#define PHY_VITESSE_INIT_REG4 0x12
519#define PHY_VITESSE_INIT_MSK1 0xc
520#define PHY_VITESSE_INIT_MSK2 0x0180
521#define PHY_VITESSE_INIT1 0x52b5
522#define PHY_VITESSE_INIT2 0xaf8a
523#define PHY_VITESSE_INIT3 0x8
524#define PHY_VITESSE_INIT4 0x8f8a
525#define PHY_VITESSE_INIT5 0xaf86
526#define PHY_VITESSE_INIT6 0x8f86
527#define PHY_VITESSE_INIT7 0xaf82
528#define PHY_VITESSE_INIT8 0x0100
529#define PHY_VITESSE_INIT9 0x8f82
530#define PHY_VITESSE_INIT10 0x0
531#define PHY_REALTEK_INIT_REG1 0x1f
532#define PHY_REALTEK_INIT_REG2 0x19
533#define PHY_REALTEK_INIT_REG3 0x13
534#define PHY_REALTEK_INIT_REG4 0x14
535#define PHY_REALTEK_INIT_REG5 0x18
536#define PHY_REALTEK_INIT_REG6 0x11
537#define PHY_REALTEK_INIT_REG7 0x01
538#define PHY_REALTEK_INIT1 0x0000
539#define PHY_REALTEK_INIT2 0x8e00
540#define PHY_REALTEK_INIT3 0x0001
541#define PHY_REALTEK_INIT4 0xad17
542#define PHY_REALTEK_INIT5 0xfb54
543#define PHY_REALTEK_INIT6 0xf5c7
544#define PHY_REALTEK_INIT7 0x1000
545#define PHY_REALTEK_INIT8 0x0003
546#define PHY_REALTEK_INIT9 0x0008
547#define PHY_REALTEK_INIT10 0x0005
548#define PHY_REALTEK_INIT11 0x0200
549#define PHY_REALTEK_INIT_MSK1 0x0003
550
551#define PHY_GIGABIT 0x0100
552
553#define PHY_TIMEOUT 0x1
554#define PHY_ERROR 0x2
555
556#define PHY_100 0x1
557#define PHY_1000 0x2
558#define PHY_HALF 0x100
559
560#define NV_PAUSEFRAME_RX_CAPABLE 0x0001
561#define NV_PAUSEFRAME_TX_CAPABLE 0x0002
562#define NV_PAUSEFRAME_RX_ENABLE 0x0004
563#define NV_PAUSEFRAME_TX_ENABLE 0x0008
564#define NV_PAUSEFRAME_RX_REQ 0x0010
565#define NV_PAUSEFRAME_TX_REQ 0x0020
566#define NV_PAUSEFRAME_AUTONEG 0x0040
567
568/* MSI/MSI-X defines */
569#define NV_MSI_X_MAX_VECTORS 8
570#define NV_MSI_X_VECTORS_MASK 0x000f
571#define NV_MSI_CAPABLE 0x0010
572#define NV_MSI_X_CAPABLE 0x0020
573#define NV_MSI_ENABLED 0x0040
574#define NV_MSI_X_ENABLED 0x0080
575
576#define NV_MSI_X_VECTOR_ALL 0x0
577#define NV_MSI_X_VECTOR_RX 0x0
578#define NV_MSI_X_VECTOR_TX 0x1
579#define NV_MSI_X_VECTOR_OTHER 0x2
580
581#define NV_MSI_PRIV_OFFSET 0x68
582#define NV_MSI_PRIV_VALUE 0xffffffff
583
584#define NV_RESTART_TX 0x1
585#define NV_RESTART_RX 0x2
586
587#define NV_TX_LIMIT_COUNT 16
588
589#define NV_DYNAMIC_THRESHOLD 4
590#define NV_DYNAMIC_MAX_QUIET_COUNT 2048
591
592/* statistics */
593struct nv_ethtool_str {
594 char name[ETH_GSTRING_LEN];
595};
596
597static const struct nv_ethtool_str nv_estats_str[] = {
598 { "tx_bytes" }, /* includes Ethernet FCS CRC */
599 { "tx_zero_rexmt" },
600 { "tx_one_rexmt" },
601 { "tx_many_rexmt" },
602 { "tx_late_collision" },
603 { "tx_fifo_errors" },
604 { "tx_carrier_errors" },
605 { "tx_excess_deferral" },
606 { "tx_retry_error" },
607 { "rx_frame_error" },
608 { "rx_extra_byte" },
609 { "rx_late_collision" },
610 { "rx_runt" },
611 { "rx_frame_too_long" },
612 { "rx_over_errors" },
613 { "rx_crc_errors" },
614 { "rx_frame_align_error" },
615 { "rx_length_error" },
616 { "rx_unicast" },
617 { "rx_multicast" },
618 { "rx_broadcast" },
619 { "rx_packets" },
620 { "rx_errors_total" },
621 { "tx_errors_total" },
622
623 /* version 2 stats */
624 { "tx_deferral" },
625 { "tx_packets" },
626 { "rx_bytes" }, /* includes Ethernet FCS CRC */
627 { "tx_pause" },
628 { "rx_pause" },
629 { "rx_drop_frame" },
630
631 /* version 3 stats */
632 { "tx_unicast" },
633 { "tx_multicast" },
634 { "tx_broadcast" }
635};
636
637struct nv_ethtool_stats {
638 u64 tx_bytes; /* should be ifconfig->tx_bytes + 4*tx_packets */
639 u64 tx_zero_rexmt;
640 u64 tx_one_rexmt;
641 u64 tx_many_rexmt;
642 u64 tx_late_collision;
643 u64 tx_fifo_errors;
644 u64 tx_carrier_errors;
645 u64 tx_excess_deferral;
646 u64 tx_retry_error;
647 u64 rx_frame_error;
648 u64 rx_extra_byte;
649 u64 rx_late_collision;
650 u64 rx_runt;
651 u64 rx_frame_too_long;
652 u64 rx_over_errors;
653 u64 rx_crc_errors;
654 u64 rx_frame_align_error;
655 u64 rx_length_error;
656 u64 rx_unicast;
657 u64 rx_multicast;
658 u64 rx_broadcast;
659 u64 rx_packets; /* should be ifconfig->rx_packets */
660 u64 rx_errors_total;
661 u64 tx_errors_total;
662
663 /* version 2 stats */
664 u64 tx_deferral;
665 u64 tx_packets; /* should be ifconfig->tx_packets */
666 u64 rx_bytes; /* should be ifconfig->rx_bytes + 4*rx_packets */
667 u64 tx_pause;
668 u64 rx_pause;
669 u64 rx_drop_frame;
670
671 /* version 3 stats */
672 u64 tx_unicast;
673 u64 tx_multicast;
674 u64 tx_broadcast;
675};
676
677#define NV_DEV_STATISTICS_V3_COUNT (sizeof(struct nv_ethtool_stats)/sizeof(u64))
678#define NV_DEV_STATISTICS_V2_COUNT (NV_DEV_STATISTICS_V3_COUNT - 3)
679#define NV_DEV_STATISTICS_V1_COUNT (NV_DEV_STATISTICS_V2_COUNT - 6)
680
681/* diagnostics */
682#define NV_TEST_COUNT_BASE 3
683#define NV_TEST_COUNT_EXTENDED 4
684
685static const struct nv_ethtool_str nv_etests_str[] = {
686 { "link (online/offline)" },
687 { "register (offline) " },
688 { "interrupt (offline) " },
689 { "loopback (offline) " }
690};
691
692struct register_test {
693 __u32 reg;
694 __u32 mask;
695};
696
697static const struct register_test nv_registers_test[] = {
698 { NvRegUnknownSetupReg6, 0x01 },
699 { NvRegMisc1, 0x03c },
700 { NvRegOffloadConfig, 0x03ff },
701 { NvRegMulticastAddrA, 0xffffffff },
702 { NvRegTxWatermark, 0x0ff },
703 { NvRegWakeUpFlags, 0x07777 },
704 { 0, 0 }
705};
706
707struct nv_skb_map {
708 struct sk_buff *skb;
709 dma_addr_t dma;
710 unsigned int dma_len:31;
711 unsigned int dma_single:1;
712 struct ring_desc_ex *first_tx_desc;
713 struct nv_skb_map *next_tx_ctx;
714};
715
716struct nv_txrx_stats {
717 u64 stat_rx_packets;
718 u64 stat_rx_bytes; /* not always available in HW */
719 u64 stat_rx_missed_errors;
720 u64 stat_rx_dropped;
721 u64 stat_tx_packets; /* not always available in HW */
722 u64 stat_tx_bytes;
723 u64 stat_tx_dropped;
724};
725
726#define nv_txrx_stats_inc(member) \
727 __this_cpu_inc(np->txrx_stats->member)
728#define nv_txrx_stats_add(member, count) \
729 __this_cpu_add(np->txrx_stats->member, (count))
730
731/*
732 * SMP locking:
733 * All hardware access under netdev_priv(dev)->lock, except the performance
734 * critical parts:
735 * - rx is (pseudo-) lockless: it relies on the single-threading provided
736 * by the arch code for interrupts.
737 * - tx setup is lockless: it relies on netif_tx_lock. Actual submission
738 * needs netdev_priv(dev)->lock :-(
739 * - set_multicast_list: preparation lockless, relies on netif_tx_lock.
740 *
741 * Hardware stats updates are protected by hwstats_lock:
742 * - updated by nv_do_stats_poll (timer). This is meant to avoid
743 * integer wraparound in the NIC stats registers, at low frequency
744 * (0.1 Hz)
745 * - updated by nv_get_ethtool_stats + nv_get_stats64
746 *
747 * Software stats are accessed only through 64b synchronization points
748 * and are not subject to other synchronization techniques (single
749 * update thread on the TX or RX paths).
750 */
751
752/* in dev: base, irq */
753struct fe_priv {
754 spinlock_t lock;
755
756 struct net_device *dev;
757 struct napi_struct napi;
758
759 /* hardware stats are updated in syscall and timer */
760 spinlock_t hwstats_lock;
761 struct nv_ethtool_stats estats;
762
763 int in_shutdown;
764 u32 linkspeed;
765 int duplex;
766 int autoneg;
767 int fixed_mode;
768 int phyaddr;
769 int wolenabled;
770 unsigned int phy_oui;
771 unsigned int phy_model;
772 unsigned int phy_rev;
773 u16 gigabit;
774 int intr_test;
775 int recover_error;
776 int quiet_count;
777
778 /* General data: RO fields */
779 dma_addr_t ring_addr;
780 struct pci_dev *pci_dev;
781 u32 orig_mac[2];
782 u32 events;
783 u32 irqmask;
784 u32 desc_ver;
785 u32 txrxctl_bits;
786 u32 vlanctl_bits;
787 u32 driver_data;
788 u32 device_id;
789 u32 register_size;
790 u32 mac_in_use;
791 int mgmt_version;
792 int mgmt_sema;
793
794 void __iomem *base;
795
796 /* rx specific fields.
797 * Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
798 */
799 union ring_type get_rx, put_rx, last_rx;
800 struct nv_skb_map *get_rx_ctx, *put_rx_ctx;
801 struct nv_skb_map *last_rx_ctx;
802 struct nv_skb_map *rx_skb;
803
804 union ring_type rx_ring;
805 unsigned int rx_buf_sz;
806 unsigned int pkt_limit;
807 struct timer_list oom_kick;
808 struct timer_list nic_poll;
809 struct timer_list stats_poll;
810 u32 nic_poll_irq;
811 int rx_ring_size;
812
813 /* RX software stats */
814 struct u64_stats_sync swstats_rx_syncp;
815 struct nv_txrx_stats __percpu *txrx_stats;
816
817 /* media detection workaround.
818 * Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
819 */
820 int need_linktimer;
821 unsigned long link_timeout;
822 /*
823 * tx specific fields.
824 */
825 union ring_type get_tx, put_tx, last_tx;
826 struct nv_skb_map *get_tx_ctx, *put_tx_ctx;
827 struct nv_skb_map *last_tx_ctx;
828 struct nv_skb_map *tx_skb;
829
830 union ring_type tx_ring;
831 u32 tx_flags;
832 int tx_ring_size;
833 int tx_limit;
834 u32 tx_pkts_in_progress;
835 struct nv_skb_map *tx_change_owner;
836 struct nv_skb_map *tx_end_flip;
837 int tx_stop;
838
839 /* TX software stats */
840 struct u64_stats_sync swstats_tx_syncp;
841
842 /* msi/msi-x fields */
843 u32 msi_flags;
844 struct msix_entry msi_x_entry[NV_MSI_X_MAX_VECTORS];
845
846 /* flow control */
847 u32 pause_flags;
848
849 /* power saved state */
850 u32 saved_config_space[NV_PCI_REGSZ_MAX/4];
851
852 /* for different msi-x irq type */
853 char name_rx[IFNAMSIZ + 3]; /* -rx */
854 char name_tx[IFNAMSIZ + 3]; /* -tx */
855 char name_other[IFNAMSIZ + 6]; /* -other */
856};
857
858/*
859 * Maximum number of loops until we assume that a bit in the irq mask
860 * is stuck. Overridable with module param.
861 */
862static int max_interrupt_work = 4;
863
864/*
865 * Optimization can be either throuput mode or cpu mode
866 *
867 * Throughput Mode: Every tx and rx packet will generate an interrupt.
868 * CPU Mode: Interrupts are controlled by a timer.
869 */
870enum {
871 NV_OPTIMIZATION_MODE_THROUGHPUT,
872 NV_OPTIMIZATION_MODE_CPU,
873 NV_OPTIMIZATION_MODE_DYNAMIC
874};
875static int optimization_mode = NV_OPTIMIZATION_MODE_DYNAMIC;
876
877/*
878 * Poll interval for timer irq
879 *
880 * This interval determines how frequent an interrupt is generated.
881 * The is value is determined by [(time_in_micro_secs * 100) / (2^10)]
882 * Min = 0, and Max = 65535
883 */
884static int poll_interval = -1;
885
886/*
887 * MSI interrupts
888 */
889enum {
890 NV_MSI_INT_DISABLED,
891 NV_MSI_INT_ENABLED
892};
893static int msi = NV_MSI_INT_ENABLED;
894
895/*
896 * MSIX interrupts
897 */
898enum {
899 NV_MSIX_INT_DISABLED,
900 NV_MSIX_INT_ENABLED
901};
902static int msix = NV_MSIX_INT_ENABLED;
903
904/*
905 * DMA 64bit
906 */
907enum {
908 NV_DMA_64BIT_DISABLED,
909 NV_DMA_64BIT_ENABLED
910};
911static int dma_64bit = NV_DMA_64BIT_ENABLED;
912
913/*
914 * Debug output control for tx_timeout
915 */
916static bool debug_tx_timeout = false;
917
918/*
919 * Crossover Detection
920 * Realtek 8201 phy + some OEM boards do not work properly.
921 */
922enum {
923 NV_CROSSOVER_DETECTION_DISABLED,
924 NV_CROSSOVER_DETECTION_ENABLED
925};
926static int phy_cross = NV_CROSSOVER_DETECTION_DISABLED;
927
928/*
929 * Power down phy when interface is down (persists through reboot;
930 * older Linux and other OSes may not power it up again)
931 */
932static int phy_power_down;
933
934static inline struct fe_priv *get_nvpriv(struct net_device *dev)
935{
936 return netdev_priv(dev);
937}
938
939static inline u8 __iomem *get_hwbase(struct net_device *dev)
940{
941 return ((struct fe_priv *)netdev_priv(dev))->base;
942}
943
944static inline void pci_push(u8 __iomem *base)
945{
946 /* force out pending posted writes */
947 readl(base);
948}
949
950static inline u32 nv_descr_getlength(struct ring_desc *prd, u32 v)
951{
952 return le32_to_cpu(prd->flaglen)
953 & ((v == DESC_VER_1) ? LEN_MASK_V1 : LEN_MASK_V2);
954}
955
956static inline u32 nv_descr_getlength_ex(struct ring_desc_ex *prd, u32 v)
957{
958 return le32_to_cpu(prd->flaglen) & LEN_MASK_V2;
959}
960
961static bool nv_optimized(struct fe_priv *np)
962{
963 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
964 return false;
965 return true;
966}
967
968static int reg_delay(struct net_device *dev, int offset, u32 mask, u32 target,
969 int delay, int delaymax)
970{
971 u8 __iomem *base = get_hwbase(dev);
972
973 pci_push(base);
974 do {
975 udelay(delay);
976 delaymax -= delay;
977 if (delaymax < 0)
978 return 1;
979 } while ((readl(base + offset) & mask) != target);
980 return 0;
981}
982
983#define NV_SETUP_RX_RING 0x01
984#define NV_SETUP_TX_RING 0x02
985
986static inline u32 dma_low(dma_addr_t addr)
987{
988 return addr;
989}
990
991static inline u32 dma_high(dma_addr_t addr)
992{
993 return addr>>31>>1; /* 0 if 32bit, shift down by 32 if 64bit */
994}
995
996static void setup_hw_rings(struct net_device *dev, int rxtx_flags)
997{
998 struct fe_priv *np = get_nvpriv(dev);
999 u8 __iomem *base = get_hwbase(dev);
1000
1001 if (!nv_optimized(np)) {
1002 if (rxtx_flags & NV_SETUP_RX_RING)
1003 writel(dma_low(np->ring_addr), base + NvRegRxRingPhysAddr);
1004 if (rxtx_flags & NV_SETUP_TX_RING)
1005 writel(dma_low(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
1006 } else {
1007 if (rxtx_flags & NV_SETUP_RX_RING) {
1008 writel(dma_low(np->ring_addr), base + NvRegRxRingPhysAddr);
1009 writel(dma_high(np->ring_addr), base + NvRegRxRingPhysAddrHigh);
1010 }
1011 if (rxtx_flags & NV_SETUP_TX_RING) {
1012 writel(dma_low(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddr);
1013 writel(dma_high(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddrHigh);
1014 }
1015 }
1016}
1017
1018static void free_rings(struct net_device *dev)
1019{
1020 struct fe_priv *np = get_nvpriv(dev);
1021
1022 if (!nv_optimized(np)) {
1023 if (np->rx_ring.orig)
1024 dma_free_coherent(&np->pci_dev->dev,
1025 sizeof(struct ring_desc) *
1026 (np->rx_ring_size +
1027 np->tx_ring_size),
1028 np->rx_ring.orig, np->ring_addr);
1029 } else {
1030 if (np->rx_ring.ex)
1031 dma_free_coherent(&np->pci_dev->dev,
1032 sizeof(struct ring_desc_ex) *
1033 (np->rx_ring_size +
1034 np->tx_ring_size),
1035 np->rx_ring.ex, np->ring_addr);
1036 }
1037 kfree(np->rx_skb);
1038 kfree(np->tx_skb);
1039}
1040
1041static int using_multi_irqs(struct net_device *dev)
1042{
1043 struct fe_priv *np = get_nvpriv(dev);
1044
1045 if (!(np->msi_flags & NV_MSI_X_ENABLED) ||
1046 ((np->msi_flags & NV_MSI_X_VECTORS_MASK) == 0x1))
1047 return 0;
1048 else
1049 return 1;
1050}
1051
1052static void nv_txrx_gate(struct net_device *dev, bool gate)
1053{
1054 struct fe_priv *np = get_nvpriv(dev);
1055 u8 __iomem *base = get_hwbase(dev);
1056 u32 powerstate;
1057
1058 if (!np->mac_in_use &&
1059 (np->driver_data & DEV_HAS_POWER_CNTRL)) {
1060 powerstate = readl(base + NvRegPowerState2);
1061 if (gate)
1062 powerstate |= NVREG_POWERSTATE2_GATE_CLOCKS;
1063 else
1064 powerstate &= ~NVREG_POWERSTATE2_GATE_CLOCKS;
1065 writel(powerstate, base + NvRegPowerState2);
1066 }
1067}
1068
1069static void nv_enable_irq(struct net_device *dev)
1070{
1071 struct fe_priv *np = get_nvpriv(dev);
1072
1073 if (!using_multi_irqs(dev)) {
1074 if (np->msi_flags & NV_MSI_X_ENABLED)
1075 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
1076 else
1077 enable_irq(np->pci_dev->irq);
1078 } else {
1079 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
1080 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
1081 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
1082 }
1083}
1084
1085static void nv_disable_irq(struct net_device *dev)
1086{
1087 struct fe_priv *np = get_nvpriv(dev);
1088
1089 if (!using_multi_irqs(dev)) {
1090 if (np->msi_flags & NV_MSI_X_ENABLED)
1091 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
1092 else
1093 disable_irq(np->pci_dev->irq);
1094 } else {
1095 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
1096 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
1097 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
1098 }
1099}
1100
1101/* In MSIX mode, a write to irqmask behaves as XOR */
1102static void nv_enable_hw_interrupts(struct net_device *dev, u32 mask)
1103{
1104 u8 __iomem *base = get_hwbase(dev);
1105
1106 writel(mask, base + NvRegIrqMask);
1107}
1108
1109static void nv_disable_hw_interrupts(struct net_device *dev, u32 mask)
1110{
1111 struct fe_priv *np = get_nvpriv(dev);
1112 u8 __iomem *base = get_hwbase(dev);
1113
1114 if (np->msi_flags & NV_MSI_X_ENABLED) {
1115 writel(mask, base + NvRegIrqMask);
1116 } else {
1117 if (np->msi_flags & NV_MSI_ENABLED)
1118 writel(0, base + NvRegMSIIrqMask);
1119 writel(0, base + NvRegIrqMask);
1120 }
1121}
1122
1123static void nv_napi_enable(struct net_device *dev)
1124{
1125 struct fe_priv *np = get_nvpriv(dev);
1126
1127 napi_enable(&np->napi);
1128}
1129
1130static void nv_napi_disable(struct net_device *dev)
1131{
1132 struct fe_priv *np = get_nvpriv(dev);
1133
1134 napi_disable(&np->napi);
1135}
1136
1137#define MII_READ (-1)
1138/* mii_rw: read/write a register on the PHY.
1139 *
1140 * Caller must guarantee serialization
1141 */
1142static int mii_rw(struct net_device *dev, int addr, int miireg, int value)
1143{
1144 u8 __iomem *base = get_hwbase(dev);
1145 u32 reg;
1146 int retval;
1147
1148 writel(NVREG_MIISTAT_MASK_RW, base + NvRegMIIStatus);
1149
1150 reg = readl(base + NvRegMIIControl);
1151 if (reg & NVREG_MIICTL_INUSE) {
1152 writel(NVREG_MIICTL_INUSE, base + NvRegMIIControl);
1153 udelay(NV_MIIBUSY_DELAY);
1154 }
1155
1156 reg = (addr << NVREG_MIICTL_ADDRSHIFT) | miireg;
1157 if (value != MII_READ) {
1158 writel(value, base + NvRegMIIData);
1159 reg |= NVREG_MIICTL_WRITE;
1160 }
1161 writel(reg, base + NvRegMIIControl);
1162
1163 if (reg_delay(dev, NvRegMIIControl, NVREG_MIICTL_INUSE, 0,
1164 NV_MIIPHY_DELAY, NV_MIIPHY_DELAYMAX)) {
1165 retval = -1;
1166 } else if (value != MII_READ) {
1167 /* it was a write operation - fewer failures are detectable */
1168 retval = 0;
1169 } else if (readl(base + NvRegMIIStatus) & NVREG_MIISTAT_ERROR) {
1170 retval = -1;
1171 } else {
1172 retval = readl(base + NvRegMIIData);
1173 }
1174
1175 return retval;
1176}
1177
1178static int phy_reset(struct net_device *dev, u32 bmcr_setup)
1179{
1180 struct fe_priv *np = netdev_priv(dev);
1181 u32 miicontrol;
1182 unsigned int tries = 0;
1183
1184 miicontrol = BMCR_RESET | bmcr_setup;
1185 if (mii_rw(dev, np->phyaddr, MII_BMCR, miicontrol))
1186 return -1;
1187
1188 /* wait for 500ms */
1189 msleep(500);
1190
1191 /* must wait till reset is deasserted */
1192 while (miicontrol & BMCR_RESET) {
1193 usleep_range(10000, 20000);
1194 miicontrol = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
1195 /* FIXME: 100 tries seem excessive */
1196 if (tries++ > 100)
1197 return -1;
1198 }
1199 return 0;
1200}
1201
1202static int init_realtek_8211b(struct net_device *dev, struct fe_priv *np)
1203{
1204 static const struct {
1205 int reg;
1206 int init;
1207 } ri[] = {
1208 { PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1 },
1209 { PHY_REALTEK_INIT_REG2, PHY_REALTEK_INIT2 },
1210 { PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3 },
1211 { PHY_REALTEK_INIT_REG3, PHY_REALTEK_INIT4 },
1212 { PHY_REALTEK_INIT_REG4, PHY_REALTEK_INIT5 },
1213 { PHY_REALTEK_INIT_REG5, PHY_REALTEK_INIT6 },
1214 { PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1 },
1215 };
1216 int i;
1217
1218 for (i = 0; i < ARRAY_SIZE(ri); i++) {
1219 if (mii_rw(dev, np->phyaddr, ri[i].reg, ri[i].init))
1220 return PHY_ERROR;
1221 }
1222
1223 return 0;
1224}
1225
1226static int init_realtek_8211c(struct net_device *dev, struct fe_priv *np)
1227{
1228 u32 reg;
1229 u8 __iomem *base = get_hwbase(dev);
1230 u32 powerstate = readl(base + NvRegPowerState2);
1231
1232 /* need to perform hw phy reset */
1233 powerstate |= NVREG_POWERSTATE2_PHY_RESET;
1234 writel(powerstate, base + NvRegPowerState2);
1235 msleep(25);
1236
1237 powerstate &= ~NVREG_POWERSTATE2_PHY_RESET;
1238 writel(powerstate, base + NvRegPowerState2);
1239 msleep(25);
1240
1241 reg = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG6, MII_READ);
1242 reg |= PHY_REALTEK_INIT9;
1243 if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG6, reg))
1244 return PHY_ERROR;
1245 if (mii_rw(dev, np->phyaddr,
1246 PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT10))
1247 return PHY_ERROR;
1248 reg = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG7, MII_READ);
1249 if (!(reg & PHY_REALTEK_INIT11)) {
1250 reg |= PHY_REALTEK_INIT11;
1251 if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG7, reg))
1252 return PHY_ERROR;
1253 }
1254 if (mii_rw(dev, np->phyaddr,
1255 PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1))
1256 return PHY_ERROR;
1257
1258 return 0;
1259}
1260
1261static int init_realtek_8201(struct net_device *dev, struct fe_priv *np)
1262{
1263 u32 phy_reserved;
1264
1265 if (np->driver_data & DEV_NEED_PHY_INIT_FIX) {
1266 phy_reserved = mii_rw(dev, np->phyaddr,
1267 PHY_REALTEK_INIT_REG6, MII_READ);
1268 phy_reserved |= PHY_REALTEK_INIT7;
1269 if (mii_rw(dev, np->phyaddr,
1270 PHY_REALTEK_INIT_REG6, phy_reserved))
1271 return PHY_ERROR;
1272 }
1273
1274 return 0;
1275}
1276
1277static int init_realtek_8201_cross(struct net_device *dev, struct fe_priv *np)
1278{
1279 u32 phy_reserved;
1280
1281 if (phy_cross == NV_CROSSOVER_DETECTION_DISABLED) {
1282 if (mii_rw(dev, np->phyaddr,
1283 PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3))
1284 return PHY_ERROR;
1285 phy_reserved = mii_rw(dev, np->phyaddr,
1286 PHY_REALTEK_INIT_REG2, MII_READ);
1287 phy_reserved &= ~PHY_REALTEK_INIT_MSK1;
1288 phy_reserved |= PHY_REALTEK_INIT3;
1289 if (mii_rw(dev, np->phyaddr,
1290 PHY_REALTEK_INIT_REG2, phy_reserved))
1291 return PHY_ERROR;
1292 if (mii_rw(dev, np->phyaddr,
1293 PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1))
1294 return PHY_ERROR;
1295 }
1296
1297 return 0;
1298}
1299
1300static int init_cicada(struct net_device *dev, struct fe_priv *np,
1301 u32 phyinterface)
1302{
1303 u32 phy_reserved;
1304
1305 if (phyinterface & PHY_RGMII) {
1306 phy_reserved = mii_rw(dev, np->phyaddr, MII_RESV1, MII_READ);
1307 phy_reserved &= ~(PHY_CICADA_INIT1 | PHY_CICADA_INIT2);
1308 phy_reserved |= (PHY_CICADA_INIT3 | PHY_CICADA_INIT4);
1309 if (mii_rw(dev, np->phyaddr, MII_RESV1, phy_reserved))
1310 return PHY_ERROR;
1311 phy_reserved = mii_rw(dev, np->phyaddr, MII_NCONFIG, MII_READ);
1312 phy_reserved |= PHY_CICADA_INIT5;
1313 if (mii_rw(dev, np->phyaddr, MII_NCONFIG, phy_reserved))
1314 return PHY_ERROR;
1315 }
1316 phy_reserved = mii_rw(dev, np->phyaddr, MII_SREVISION, MII_READ);
1317 phy_reserved |= PHY_CICADA_INIT6;
1318 if (mii_rw(dev, np->phyaddr, MII_SREVISION, phy_reserved))
1319 return PHY_ERROR;
1320
1321 return 0;
1322}
1323
1324static int init_vitesse(struct net_device *dev, struct fe_priv *np)
1325{
1326 u32 phy_reserved;
1327
1328 if (mii_rw(dev, np->phyaddr,
1329 PHY_VITESSE_INIT_REG1, PHY_VITESSE_INIT1))
1330 return PHY_ERROR;
1331 if (mii_rw(dev, np->phyaddr,
1332 PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT2))
1333 return PHY_ERROR;
1334 phy_reserved = mii_rw(dev, np->phyaddr,
1335 PHY_VITESSE_INIT_REG4, MII_READ);
1336 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, phy_reserved))
1337 return PHY_ERROR;
1338 phy_reserved = mii_rw(dev, np->phyaddr,
1339 PHY_VITESSE_INIT_REG3, MII_READ);
1340 phy_reserved &= ~PHY_VITESSE_INIT_MSK1;
1341 phy_reserved |= PHY_VITESSE_INIT3;
1342 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, phy_reserved))
1343 return PHY_ERROR;
1344 if (mii_rw(dev, np->phyaddr,
1345 PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT4))
1346 return PHY_ERROR;
1347 if (mii_rw(dev, np->phyaddr,
1348 PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT5))
1349 return PHY_ERROR;
1350 phy_reserved = mii_rw(dev, np->phyaddr,
1351 PHY_VITESSE_INIT_REG4, MII_READ);
1352 phy_reserved &= ~PHY_VITESSE_INIT_MSK1;
1353 phy_reserved |= PHY_VITESSE_INIT3;
1354 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, phy_reserved))
1355 return PHY_ERROR;
1356 phy_reserved = mii_rw(dev, np->phyaddr,
1357 PHY_VITESSE_INIT_REG3, MII_READ);
1358 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, phy_reserved))
1359 return PHY_ERROR;
1360 if (mii_rw(dev, np->phyaddr,
1361 PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT6))
1362 return PHY_ERROR;
1363 if (mii_rw(dev, np->phyaddr,
1364 PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT7))
1365 return PHY_ERROR;
1366 phy_reserved = mii_rw(dev, np->phyaddr,
1367 PHY_VITESSE_INIT_REG4, MII_READ);
1368 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, phy_reserved))
1369 return PHY_ERROR;
1370 phy_reserved = mii_rw(dev, np->phyaddr,
1371 PHY_VITESSE_INIT_REG3, MII_READ);
1372 phy_reserved &= ~PHY_VITESSE_INIT_MSK2;
1373 phy_reserved |= PHY_VITESSE_INIT8;
1374 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, phy_reserved))
1375 return PHY_ERROR;
1376 if (mii_rw(dev, np->phyaddr,
1377 PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT9))
1378 return PHY_ERROR;
1379 if (mii_rw(dev, np->phyaddr,
1380 PHY_VITESSE_INIT_REG1, PHY_VITESSE_INIT10))
1381 return PHY_ERROR;
1382
1383 return 0;
1384}
1385
1386static int phy_init(struct net_device *dev)
1387{
1388 struct fe_priv *np = get_nvpriv(dev);
1389 u8 __iomem *base = get_hwbase(dev);
1390 u32 phyinterface;
1391 u32 mii_status, mii_control, mii_control_1000, reg;
1392
1393 /* phy errata for E3016 phy */
1394 if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
1395 reg = mii_rw(dev, np->phyaddr, MII_NCONFIG, MII_READ);
1396 reg &= ~PHY_MARVELL_E3016_INITMASK;
1397 if (mii_rw(dev, np->phyaddr, MII_NCONFIG, reg)) {
1398 netdev_info(dev, "%s: phy write to errata reg failed\n",
1399 pci_name(np->pci_dev));
1400 return PHY_ERROR;
1401 }
1402 }
1403 if (np->phy_oui == PHY_OUI_REALTEK) {
1404 if (np->phy_model == PHY_MODEL_REALTEK_8211 &&
1405 np->phy_rev == PHY_REV_REALTEK_8211B) {
1406 if (init_realtek_8211b(dev, np)) {
1407 netdev_info(dev, "%s: phy init failed\n",
1408 pci_name(np->pci_dev));
1409 return PHY_ERROR;
1410 }
1411 } else if (np->phy_model == PHY_MODEL_REALTEK_8211 &&
1412 np->phy_rev == PHY_REV_REALTEK_8211C) {
1413 if (init_realtek_8211c(dev, np)) {
1414 netdev_info(dev, "%s: phy init failed\n",
1415 pci_name(np->pci_dev));
1416 return PHY_ERROR;
1417 }
1418 } else if (np->phy_model == PHY_MODEL_REALTEK_8201) {
1419 if (init_realtek_8201(dev, np)) {
1420 netdev_info(dev, "%s: phy init failed\n",
1421 pci_name(np->pci_dev));
1422 return PHY_ERROR;
1423 }
1424 }
1425 }
1426
1427 /* set advertise register */
1428 reg = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
1429 reg |= (ADVERTISE_10HALF | ADVERTISE_10FULL |
1430 ADVERTISE_100HALF | ADVERTISE_100FULL |
1431 ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP);
1432 if (mii_rw(dev, np->phyaddr, MII_ADVERTISE, reg)) {
1433 netdev_info(dev, "%s: phy write to advertise failed\n",
1434 pci_name(np->pci_dev));
1435 return PHY_ERROR;
1436 }
1437
1438 /* get phy interface type */
1439 phyinterface = readl(base + NvRegPhyInterface);
1440
1441 /* see if gigabit phy */
1442 mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
1443 if (mii_status & PHY_GIGABIT) {
1444 np->gigabit = PHY_GIGABIT;
1445 mii_control_1000 = mii_rw(dev, np->phyaddr,
1446 MII_CTRL1000, MII_READ);
1447 mii_control_1000 &= ~ADVERTISE_1000HALF;
1448 if (phyinterface & PHY_RGMII)
1449 mii_control_1000 |= ADVERTISE_1000FULL;
1450 else
1451 mii_control_1000 &= ~ADVERTISE_1000FULL;
1452
1453 if (mii_rw(dev, np->phyaddr, MII_CTRL1000, mii_control_1000)) {
1454 netdev_info(dev, "%s: phy init failed\n",
1455 pci_name(np->pci_dev));
1456 return PHY_ERROR;
1457 }
1458 } else
1459 np->gigabit = 0;
1460
1461 mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
1462 mii_control |= BMCR_ANENABLE;
1463
1464 if (np->phy_oui == PHY_OUI_REALTEK &&
1465 np->phy_model == PHY_MODEL_REALTEK_8211 &&
1466 np->phy_rev == PHY_REV_REALTEK_8211C) {
1467 /* start autoneg since we already performed hw reset above */
1468 mii_control |= BMCR_ANRESTART;
1469 if (mii_rw(dev, np->phyaddr, MII_BMCR, mii_control)) {
1470 netdev_info(dev, "%s: phy init failed\n",
1471 pci_name(np->pci_dev));
1472 return PHY_ERROR;
1473 }
1474 } else {
1475 /* reset the phy
1476 * (certain phys need bmcr to be setup with reset)
1477 */
1478 if (phy_reset(dev, mii_control)) {
1479 netdev_info(dev, "%s: phy reset failed\n",
1480 pci_name(np->pci_dev));
1481 return PHY_ERROR;
1482 }
1483 }
1484
1485 /* phy vendor specific configuration */
1486 if (np->phy_oui == PHY_OUI_CICADA) {
1487 if (init_cicada(dev, np, phyinterface)) {
1488 netdev_info(dev, "%s: phy init failed\n",
1489 pci_name(np->pci_dev));
1490 return PHY_ERROR;
1491 }
1492 } else if (np->phy_oui == PHY_OUI_VITESSE) {
1493 if (init_vitesse(dev, np)) {
1494 netdev_info(dev, "%s: phy init failed\n",
1495 pci_name(np->pci_dev));
1496 return PHY_ERROR;
1497 }
1498 } else if (np->phy_oui == PHY_OUI_REALTEK) {
1499 if (np->phy_model == PHY_MODEL_REALTEK_8211 &&
1500 np->phy_rev == PHY_REV_REALTEK_8211B) {
1501 /* reset could have cleared these out, set them back */
1502 if (init_realtek_8211b(dev, np)) {
1503 netdev_info(dev, "%s: phy init failed\n",
1504 pci_name(np->pci_dev));
1505 return PHY_ERROR;
1506 }
1507 } else if (np->phy_model == PHY_MODEL_REALTEK_8201) {
1508 if (init_realtek_8201(dev, np) ||
1509 init_realtek_8201_cross(dev, np)) {
1510 netdev_info(dev, "%s: phy init failed\n",
1511 pci_name(np->pci_dev));
1512 return PHY_ERROR;
1513 }
1514 }
1515 }
1516
1517 /* some phys clear out pause advertisement on reset, set it back */
1518 mii_rw(dev, np->phyaddr, MII_ADVERTISE, reg);
1519
1520 /* restart auto negotiation, power down phy */
1521 mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
1522 mii_control |= (BMCR_ANRESTART | BMCR_ANENABLE);
1523 if (phy_power_down)
1524 mii_control |= BMCR_PDOWN;
1525 if (mii_rw(dev, np->phyaddr, MII_BMCR, mii_control))
1526 return PHY_ERROR;
1527
1528 return 0;
1529}
1530
1531static void nv_start_rx(struct net_device *dev)
1532{
1533 struct fe_priv *np = netdev_priv(dev);
1534 u8 __iomem *base = get_hwbase(dev);
1535 u32 rx_ctrl = readl(base + NvRegReceiverControl);
1536
1537 /* Already running? Stop it. */
1538 if ((readl(base + NvRegReceiverControl) & NVREG_RCVCTL_START) && !np->mac_in_use) {
1539 rx_ctrl &= ~NVREG_RCVCTL_START;
1540 writel(rx_ctrl, base + NvRegReceiverControl);
1541 pci_push(base);
1542 }
1543 writel(np->linkspeed, base + NvRegLinkSpeed);
1544 pci_push(base);
1545 rx_ctrl |= NVREG_RCVCTL_START;
1546 if (np->mac_in_use)
1547 rx_ctrl &= ~NVREG_RCVCTL_RX_PATH_EN;
1548 writel(rx_ctrl, base + NvRegReceiverControl);
1549 pci_push(base);
1550}
1551
1552static void nv_stop_rx(struct net_device *dev)
1553{
1554 struct fe_priv *np = netdev_priv(dev);
1555 u8 __iomem *base = get_hwbase(dev);
1556 u32 rx_ctrl = readl(base + NvRegReceiverControl);
1557
1558 if (!np->mac_in_use)
1559 rx_ctrl &= ~NVREG_RCVCTL_START;
1560 else
1561 rx_ctrl |= NVREG_RCVCTL_RX_PATH_EN;
1562 writel(rx_ctrl, base + NvRegReceiverControl);
1563 if (reg_delay(dev, NvRegReceiverStatus, NVREG_RCVSTAT_BUSY, 0,
1564 NV_RXSTOP_DELAY1, NV_RXSTOP_DELAY1MAX))
1565 netdev_info(dev, "%s: ReceiverStatus remained busy\n",
1566 __func__);
1567
1568 udelay(NV_RXSTOP_DELAY2);
1569 if (!np->mac_in_use)
1570 writel(0, base + NvRegLinkSpeed);
1571}
1572
1573static void nv_start_tx(struct net_device *dev)
1574{
1575 struct fe_priv *np = netdev_priv(dev);
1576 u8 __iomem *base = get_hwbase(dev);
1577 u32 tx_ctrl = readl(base + NvRegTransmitterControl);
1578
1579 tx_ctrl |= NVREG_XMITCTL_START;
1580 if (np->mac_in_use)
1581 tx_ctrl &= ~NVREG_XMITCTL_TX_PATH_EN;
1582 writel(tx_ctrl, base + NvRegTransmitterControl);
1583 pci_push(base);
1584}
1585
1586static void nv_stop_tx(struct net_device *dev)
1587{
1588 struct fe_priv *np = netdev_priv(dev);
1589 u8 __iomem *base = get_hwbase(dev);
1590 u32 tx_ctrl = readl(base + NvRegTransmitterControl);
1591
1592 if (!np->mac_in_use)
1593 tx_ctrl &= ~NVREG_XMITCTL_START;
1594 else
1595 tx_ctrl |= NVREG_XMITCTL_TX_PATH_EN;
1596 writel(tx_ctrl, base + NvRegTransmitterControl);
1597 if (reg_delay(dev, NvRegTransmitterStatus, NVREG_XMITSTAT_BUSY, 0,
1598 NV_TXSTOP_DELAY1, NV_TXSTOP_DELAY1MAX))
1599 netdev_info(dev, "%s: TransmitterStatus remained busy\n",
1600 __func__);
1601
1602 udelay(NV_TXSTOP_DELAY2);
1603 if (!np->mac_in_use)
1604 writel(readl(base + NvRegTransmitPoll) & NVREG_TRANSMITPOLL_MAC_ADDR_REV,
1605 base + NvRegTransmitPoll);
1606}
1607
1608static void nv_start_rxtx(struct net_device *dev)
1609{
1610 nv_start_rx(dev);
1611 nv_start_tx(dev);
1612}
1613
1614static void nv_stop_rxtx(struct net_device *dev)
1615{
1616 nv_stop_rx(dev);
1617 nv_stop_tx(dev);
1618}
1619
1620static void nv_txrx_reset(struct net_device *dev)
1621{
1622 struct fe_priv *np = netdev_priv(dev);
1623 u8 __iomem *base = get_hwbase(dev);
1624
1625 writel(NVREG_TXRXCTL_BIT2 | NVREG_TXRXCTL_RESET | np->txrxctl_bits, base + NvRegTxRxControl);
1626 pci_push(base);
1627 udelay(NV_TXRX_RESET_DELAY);
1628 writel(NVREG_TXRXCTL_BIT2 | np->txrxctl_bits, base + NvRegTxRxControl);
1629 pci_push(base);
1630}
1631
1632static void nv_mac_reset(struct net_device *dev)
1633{
1634 struct fe_priv *np = netdev_priv(dev);
1635 u8 __iomem *base = get_hwbase(dev);
1636 u32 temp1, temp2, temp3;
1637
1638 writel(NVREG_TXRXCTL_BIT2 | NVREG_TXRXCTL_RESET | np->txrxctl_bits, base + NvRegTxRxControl);
1639 pci_push(base);
1640
1641 /* save registers since they will be cleared on reset */
1642 temp1 = readl(base + NvRegMacAddrA);
1643 temp2 = readl(base + NvRegMacAddrB);
1644 temp3 = readl(base + NvRegTransmitPoll);
1645
1646 writel(NVREG_MAC_RESET_ASSERT, base + NvRegMacReset);
1647 pci_push(base);
1648 udelay(NV_MAC_RESET_DELAY);
1649 writel(0, base + NvRegMacReset);
1650 pci_push(base);
1651 udelay(NV_MAC_RESET_DELAY);
1652
1653 /* restore saved registers */
1654 writel(temp1, base + NvRegMacAddrA);
1655 writel(temp2, base + NvRegMacAddrB);
1656 writel(temp3, base + NvRegTransmitPoll);
1657
1658 writel(NVREG_TXRXCTL_BIT2 | np->txrxctl_bits, base + NvRegTxRxControl);
1659 pci_push(base);
1660}
1661
1662/* Caller must appropriately lock netdev_priv(dev)->hwstats_lock */
1663static void nv_update_stats(struct net_device *dev)
1664{
1665 struct fe_priv *np = netdev_priv(dev);
1666 u8 __iomem *base = get_hwbase(dev);
1667
1668 lockdep_assert_held(&np->hwstats_lock);
1669
1670 /* query hardware */
1671 np->estats.tx_bytes += readl(base + NvRegTxCnt);
1672 np->estats.tx_zero_rexmt += readl(base + NvRegTxZeroReXmt);
1673 np->estats.tx_one_rexmt += readl(base + NvRegTxOneReXmt);
1674 np->estats.tx_many_rexmt += readl(base + NvRegTxManyReXmt);
1675 np->estats.tx_late_collision += readl(base + NvRegTxLateCol);
1676 np->estats.tx_fifo_errors += readl(base + NvRegTxUnderflow);
1677 np->estats.tx_carrier_errors += readl(base + NvRegTxLossCarrier);
1678 np->estats.tx_excess_deferral += readl(base + NvRegTxExcessDef);
1679 np->estats.tx_retry_error += readl(base + NvRegTxRetryErr);
1680 np->estats.rx_frame_error += readl(base + NvRegRxFrameErr);
1681 np->estats.rx_extra_byte += readl(base + NvRegRxExtraByte);
1682 np->estats.rx_late_collision += readl(base + NvRegRxLateCol);
1683 np->estats.rx_runt += readl(base + NvRegRxRunt);
1684 np->estats.rx_frame_too_long += readl(base + NvRegRxFrameTooLong);
1685 np->estats.rx_over_errors += readl(base + NvRegRxOverflow);
1686 np->estats.rx_crc_errors += readl(base + NvRegRxFCSErr);
1687 np->estats.rx_frame_align_error += readl(base + NvRegRxFrameAlignErr);
1688 np->estats.rx_length_error += readl(base + NvRegRxLenErr);
1689 np->estats.rx_unicast += readl(base + NvRegRxUnicast);
1690 np->estats.rx_multicast += readl(base + NvRegRxMulticast);
1691 np->estats.rx_broadcast += readl(base + NvRegRxBroadcast);
1692 np->estats.rx_packets =
1693 np->estats.rx_unicast +
1694 np->estats.rx_multicast +
1695 np->estats.rx_broadcast;
1696 np->estats.rx_errors_total =
1697 np->estats.rx_crc_errors +
1698 np->estats.rx_over_errors +
1699 np->estats.rx_frame_error +
1700 (np->estats.rx_frame_align_error - np->estats.rx_extra_byte) +
1701 np->estats.rx_late_collision +
1702 np->estats.rx_runt +
1703 np->estats.rx_frame_too_long;
1704 np->estats.tx_errors_total =
1705 np->estats.tx_late_collision +
1706 np->estats.tx_fifo_errors +
1707 np->estats.tx_carrier_errors +
1708 np->estats.tx_excess_deferral +
1709 np->estats.tx_retry_error;
1710
1711 if (np->driver_data & DEV_HAS_STATISTICS_V2) {
1712 np->estats.tx_deferral += readl(base + NvRegTxDef);
1713 np->estats.tx_packets += readl(base + NvRegTxFrame);
1714 np->estats.rx_bytes += readl(base + NvRegRxCnt);
1715 np->estats.tx_pause += readl(base + NvRegTxPause);
1716 np->estats.rx_pause += readl(base + NvRegRxPause);
1717 np->estats.rx_drop_frame += readl(base + NvRegRxDropFrame);
1718 np->estats.rx_errors_total += np->estats.rx_drop_frame;
1719 }
1720
1721 if (np->driver_data & DEV_HAS_STATISTICS_V3) {
1722 np->estats.tx_unicast += readl(base + NvRegTxUnicast);
1723 np->estats.tx_multicast += readl(base + NvRegTxMulticast);
1724 np->estats.tx_broadcast += readl(base + NvRegTxBroadcast);
1725 }
1726}
1727
1728static void nv_get_stats(int cpu, struct fe_priv *np,
1729 struct rtnl_link_stats64 *storage)
1730{
1731 struct nv_txrx_stats *src = per_cpu_ptr(np->txrx_stats, cpu);
1732 unsigned int syncp_start;
1733 u64 rx_packets, rx_bytes, rx_dropped, rx_missed_errors;
1734 u64 tx_packets, tx_bytes, tx_dropped;
1735
1736 do {
1737 syncp_start = u64_stats_fetch_begin(&np->swstats_rx_syncp);
1738 rx_packets = src->stat_rx_packets;
1739 rx_bytes = src->stat_rx_bytes;
1740 rx_dropped = src->stat_rx_dropped;
1741 rx_missed_errors = src->stat_rx_missed_errors;
1742 } while (u64_stats_fetch_retry(&np->swstats_rx_syncp, syncp_start));
1743
1744 storage->rx_packets += rx_packets;
1745 storage->rx_bytes += rx_bytes;
1746 storage->rx_dropped += rx_dropped;
1747 storage->rx_missed_errors += rx_missed_errors;
1748
1749 do {
1750 syncp_start = u64_stats_fetch_begin(&np->swstats_tx_syncp);
1751 tx_packets = src->stat_tx_packets;
1752 tx_bytes = src->stat_tx_bytes;
1753 tx_dropped = src->stat_tx_dropped;
1754 } while (u64_stats_fetch_retry(&np->swstats_tx_syncp, syncp_start));
1755
1756 storage->tx_packets += tx_packets;
1757 storage->tx_bytes += tx_bytes;
1758 storage->tx_dropped += tx_dropped;
1759}
1760
1761/*
1762 * nv_get_stats64: dev->ndo_get_stats64 function
1763 * Get latest stats value from the nic.
1764 * Called with rcu_read_lock() held -
1765 * only synchronized against unregister_netdevice.
1766 */
1767static void
1768nv_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *storage)
1769 __acquires(&netdev_priv(dev)->hwstats_lock)
1770 __releases(&netdev_priv(dev)->hwstats_lock)
1771{
1772 struct fe_priv *np = netdev_priv(dev);
1773 int cpu;
1774
1775 /*
1776 * Note: because HW stats are not always available and for
1777 * consistency reasons, the following ifconfig stats are
1778 * managed by software: rx_bytes, tx_bytes, rx_packets and
1779 * tx_packets. The related hardware stats reported by ethtool
1780 * should be equivalent to these ifconfig stats, with 4
1781 * additional bytes per packet (Ethernet FCS CRC), except for
1782 * tx_packets when TSO kicks in.
1783 */
1784
1785 /* software stats */
1786 for_each_online_cpu(cpu)
1787 nv_get_stats(cpu, np, storage);
1788
1789 /* If the nic supports hw counters then retrieve latest values */
1790 if (np->driver_data & DEV_HAS_STATISTICS_V123) {
1791 spin_lock_bh(&np->hwstats_lock);
1792
1793 nv_update_stats(dev);
1794
1795 /* generic stats */
1796 storage->rx_errors = np->estats.rx_errors_total;
1797 storage->tx_errors = np->estats.tx_errors_total;
1798
1799 /* meaningful only when NIC supports stats v3 */
1800 storage->multicast = np->estats.rx_multicast;
1801
1802 /* detailed rx_errors */
1803 storage->rx_length_errors = np->estats.rx_length_error;
1804 storage->rx_over_errors = np->estats.rx_over_errors;
1805 storage->rx_crc_errors = np->estats.rx_crc_errors;
1806 storage->rx_frame_errors = np->estats.rx_frame_align_error;
1807 storage->rx_fifo_errors = np->estats.rx_drop_frame;
1808
1809 /* detailed tx_errors */
1810 storage->tx_carrier_errors = np->estats.tx_carrier_errors;
1811 storage->tx_fifo_errors = np->estats.tx_fifo_errors;
1812
1813 spin_unlock_bh(&np->hwstats_lock);
1814 }
1815}
1816
1817/*
1818 * nv_alloc_rx: fill rx ring entries.
1819 * Return 1 if the allocations for the skbs failed and the
1820 * rx engine is without Available descriptors
1821 */
1822static int nv_alloc_rx(struct net_device *dev)
1823{
1824 struct fe_priv *np = netdev_priv(dev);
1825 struct ring_desc *less_rx;
1826
1827 less_rx = np->get_rx.orig;
1828 if (less_rx-- == np->rx_ring.orig)
1829 less_rx = np->last_rx.orig;
1830
1831 while (np->put_rx.orig != less_rx) {
1832 struct sk_buff *skb = netdev_alloc_skb(dev, np->rx_buf_sz + NV_RX_ALLOC_PAD);
1833 if (likely(skb)) {
1834 np->put_rx_ctx->skb = skb;
1835 np->put_rx_ctx->dma = dma_map_single(&np->pci_dev->dev,
1836 skb->data,
1837 skb_tailroom(skb),
1838 DMA_FROM_DEVICE);
1839 if (unlikely(dma_mapping_error(&np->pci_dev->dev,
1840 np->put_rx_ctx->dma))) {
1841 kfree_skb(skb);
1842 goto packet_dropped;
1843 }
1844 np->put_rx_ctx->dma_len = skb_tailroom(skb);
1845 np->put_rx.orig->buf = cpu_to_le32(np->put_rx_ctx->dma);
1846 wmb();
1847 np->put_rx.orig->flaglen = cpu_to_le32(np->rx_buf_sz | NV_RX_AVAIL);
1848 if (unlikely(np->put_rx.orig++ == np->last_rx.orig))
1849 np->put_rx.orig = np->rx_ring.orig;
1850 if (unlikely(np->put_rx_ctx++ == np->last_rx_ctx))
1851 np->put_rx_ctx = np->rx_skb;
1852 } else {
1853packet_dropped:
1854 u64_stats_update_begin(&np->swstats_rx_syncp);
1855 nv_txrx_stats_inc(stat_rx_dropped);
1856 u64_stats_update_end(&np->swstats_rx_syncp);
1857 return 1;
1858 }
1859 }
1860 return 0;
1861}
1862
1863static int nv_alloc_rx_optimized(struct net_device *dev)
1864{
1865 struct fe_priv *np = netdev_priv(dev);
1866 struct ring_desc_ex *less_rx;
1867
1868 less_rx = np->get_rx.ex;
1869 if (less_rx-- == np->rx_ring.ex)
1870 less_rx = np->last_rx.ex;
1871
1872 while (np->put_rx.ex != less_rx) {
1873 struct sk_buff *skb = netdev_alloc_skb(dev, np->rx_buf_sz + NV_RX_ALLOC_PAD);
1874 if (likely(skb)) {
1875 np->put_rx_ctx->skb = skb;
1876 np->put_rx_ctx->dma = dma_map_single(&np->pci_dev->dev,
1877 skb->data,
1878 skb_tailroom(skb),
1879 DMA_FROM_DEVICE);
1880 if (unlikely(dma_mapping_error(&np->pci_dev->dev,
1881 np->put_rx_ctx->dma))) {
1882 kfree_skb(skb);
1883 goto packet_dropped;
1884 }
1885 np->put_rx_ctx->dma_len = skb_tailroom(skb);
1886 np->put_rx.ex->bufhigh = cpu_to_le32(dma_high(np->put_rx_ctx->dma));
1887 np->put_rx.ex->buflow = cpu_to_le32(dma_low(np->put_rx_ctx->dma));
1888 wmb();
1889 np->put_rx.ex->flaglen = cpu_to_le32(np->rx_buf_sz | NV_RX2_AVAIL);
1890 if (unlikely(np->put_rx.ex++ == np->last_rx.ex))
1891 np->put_rx.ex = np->rx_ring.ex;
1892 if (unlikely(np->put_rx_ctx++ == np->last_rx_ctx))
1893 np->put_rx_ctx = np->rx_skb;
1894 } else {
1895packet_dropped:
1896 u64_stats_update_begin(&np->swstats_rx_syncp);
1897 nv_txrx_stats_inc(stat_rx_dropped);
1898 u64_stats_update_end(&np->swstats_rx_syncp);
1899 return 1;
1900 }
1901 }
1902 return 0;
1903}
1904
1905/* If rx bufs are exhausted called after 50ms to attempt to refresh */
1906static void nv_do_rx_refill(struct timer_list *t)
1907{
1908 struct fe_priv *np = from_timer(np, t, oom_kick);
1909
1910 /* Just reschedule NAPI rx processing */
1911 napi_schedule(&np->napi);
1912}
1913
1914static void nv_init_rx(struct net_device *dev)
1915{
1916 struct fe_priv *np = netdev_priv(dev);
1917 int i;
1918
1919 np->get_rx = np->rx_ring;
1920 np->put_rx = np->rx_ring;
1921
1922 if (!nv_optimized(np))
1923 np->last_rx.orig = &np->rx_ring.orig[np->rx_ring_size-1];
1924 else
1925 np->last_rx.ex = &np->rx_ring.ex[np->rx_ring_size-1];
1926 np->get_rx_ctx = np->rx_skb;
1927 np->put_rx_ctx = np->rx_skb;
1928 np->last_rx_ctx = &np->rx_skb[np->rx_ring_size-1];
1929
1930 for (i = 0; i < np->rx_ring_size; i++) {
1931 if (!nv_optimized(np)) {
1932 np->rx_ring.orig[i].flaglen = 0;
1933 np->rx_ring.orig[i].buf = 0;
1934 } else {
1935 np->rx_ring.ex[i].flaglen = 0;
1936 np->rx_ring.ex[i].txvlan = 0;
1937 np->rx_ring.ex[i].bufhigh = 0;
1938 np->rx_ring.ex[i].buflow = 0;
1939 }
1940 np->rx_skb[i].skb = NULL;
1941 np->rx_skb[i].dma = 0;
1942 }
1943}
1944
1945static void nv_init_tx(struct net_device *dev)
1946{
1947 struct fe_priv *np = netdev_priv(dev);
1948 int i;
1949
1950 np->get_tx = np->tx_ring;
1951 np->put_tx = np->tx_ring;
1952
1953 if (!nv_optimized(np))
1954 np->last_tx.orig = &np->tx_ring.orig[np->tx_ring_size-1];
1955 else
1956 np->last_tx.ex = &np->tx_ring.ex[np->tx_ring_size-1];
1957 np->get_tx_ctx = np->tx_skb;
1958 np->put_tx_ctx = np->tx_skb;
1959 np->last_tx_ctx = &np->tx_skb[np->tx_ring_size-1];
1960 netdev_reset_queue(np->dev);
1961 np->tx_pkts_in_progress = 0;
1962 np->tx_change_owner = NULL;
1963 np->tx_end_flip = NULL;
1964 np->tx_stop = 0;
1965
1966 for (i = 0; i < np->tx_ring_size; i++) {
1967 if (!nv_optimized(np)) {
1968 np->tx_ring.orig[i].flaglen = 0;
1969 np->tx_ring.orig[i].buf = 0;
1970 } else {
1971 np->tx_ring.ex[i].flaglen = 0;
1972 np->tx_ring.ex[i].txvlan = 0;
1973 np->tx_ring.ex[i].bufhigh = 0;
1974 np->tx_ring.ex[i].buflow = 0;
1975 }
1976 np->tx_skb[i].skb = NULL;
1977 np->tx_skb[i].dma = 0;
1978 np->tx_skb[i].dma_len = 0;
1979 np->tx_skb[i].dma_single = 0;
1980 np->tx_skb[i].first_tx_desc = NULL;
1981 np->tx_skb[i].next_tx_ctx = NULL;
1982 }
1983}
1984
1985static int nv_init_ring(struct net_device *dev)
1986{
1987 struct fe_priv *np = netdev_priv(dev);
1988
1989 nv_init_tx(dev);
1990 nv_init_rx(dev);
1991
1992 if (!nv_optimized(np))
1993 return nv_alloc_rx(dev);
1994 else
1995 return nv_alloc_rx_optimized(dev);
1996}
1997
1998static void nv_unmap_txskb(struct fe_priv *np, struct nv_skb_map *tx_skb)
1999{
2000 if (tx_skb->dma) {
2001 if (tx_skb->dma_single)
2002 dma_unmap_single(&np->pci_dev->dev, tx_skb->dma,
2003 tx_skb->dma_len,
2004 DMA_TO_DEVICE);
2005 else
2006 dma_unmap_page(&np->pci_dev->dev, tx_skb->dma,
2007 tx_skb->dma_len,
2008 DMA_TO_DEVICE);
2009 tx_skb->dma = 0;
2010 }
2011}
2012
2013static int nv_release_txskb(struct fe_priv *np, struct nv_skb_map *tx_skb)
2014{
2015 nv_unmap_txskb(np, tx_skb);
2016 if (tx_skb->skb) {
2017 dev_kfree_skb_any(tx_skb->skb);
2018 tx_skb->skb = NULL;
2019 return 1;
2020 }
2021 return 0;
2022}
2023
2024static void nv_drain_tx(struct net_device *dev)
2025{
2026 struct fe_priv *np = netdev_priv(dev);
2027 unsigned int i;
2028
2029 for (i = 0; i < np->tx_ring_size; i++) {
2030 if (!nv_optimized(np)) {
2031 np->tx_ring.orig[i].flaglen = 0;
2032 np->tx_ring.orig[i].buf = 0;
2033 } else {
2034 np->tx_ring.ex[i].flaglen = 0;
2035 np->tx_ring.ex[i].txvlan = 0;
2036 np->tx_ring.ex[i].bufhigh = 0;
2037 np->tx_ring.ex[i].buflow = 0;
2038 }
2039 if (nv_release_txskb(np, &np->tx_skb[i])) {
2040 u64_stats_update_begin(&np->swstats_tx_syncp);
2041 nv_txrx_stats_inc(stat_tx_dropped);
2042 u64_stats_update_end(&np->swstats_tx_syncp);
2043 }
2044 np->tx_skb[i].dma = 0;
2045 np->tx_skb[i].dma_len = 0;
2046 np->tx_skb[i].dma_single = 0;
2047 np->tx_skb[i].first_tx_desc = NULL;
2048 np->tx_skb[i].next_tx_ctx = NULL;
2049 }
2050 np->tx_pkts_in_progress = 0;
2051 np->tx_change_owner = NULL;
2052 np->tx_end_flip = NULL;
2053}
2054
2055static void nv_drain_rx(struct net_device *dev)
2056{
2057 struct fe_priv *np = netdev_priv(dev);
2058 int i;
2059
2060 for (i = 0; i < np->rx_ring_size; i++) {
2061 if (!nv_optimized(np)) {
2062 np->rx_ring.orig[i].flaglen = 0;
2063 np->rx_ring.orig[i].buf = 0;
2064 } else {
2065 np->rx_ring.ex[i].flaglen = 0;
2066 np->rx_ring.ex[i].txvlan = 0;
2067 np->rx_ring.ex[i].bufhigh = 0;
2068 np->rx_ring.ex[i].buflow = 0;
2069 }
2070 wmb();
2071 if (np->rx_skb[i].skb) {
2072 dma_unmap_single(&np->pci_dev->dev, np->rx_skb[i].dma,
2073 (skb_end_pointer(np->rx_skb[i].skb) -
2074 np->rx_skb[i].skb->data),
2075 DMA_FROM_DEVICE);
2076 dev_kfree_skb(np->rx_skb[i].skb);
2077 np->rx_skb[i].skb = NULL;
2078 }
2079 }
2080}
2081
2082static void nv_drain_rxtx(struct net_device *dev)
2083{
2084 nv_drain_tx(dev);
2085 nv_drain_rx(dev);
2086}
2087
2088static inline u32 nv_get_empty_tx_slots(struct fe_priv *np)
2089{
2090 return (u32)(np->tx_ring_size - ((np->tx_ring_size + (np->put_tx_ctx - np->get_tx_ctx)) % np->tx_ring_size));
2091}
2092
2093static void nv_legacybackoff_reseed(struct net_device *dev)
2094{
2095 u8 __iomem *base = get_hwbase(dev);
2096 u32 reg;
2097 u32 low;
2098 int tx_status = 0;
2099
2100 reg = readl(base + NvRegSlotTime) & ~NVREG_SLOTTIME_MASK;
2101 get_random_bytes(&low, sizeof(low));
2102 reg |= low & NVREG_SLOTTIME_MASK;
2103
2104 /* Need to stop tx before change takes effect.
2105 * Caller has already gained np->lock.
2106 */
2107 tx_status = readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_START;
2108 if (tx_status)
2109 nv_stop_tx(dev);
2110 nv_stop_rx(dev);
2111 writel(reg, base + NvRegSlotTime);
2112 if (tx_status)
2113 nv_start_tx(dev);
2114 nv_start_rx(dev);
2115}
2116
2117/* Gear Backoff Seeds */
2118#define BACKOFF_SEEDSET_ROWS 8
2119#define BACKOFF_SEEDSET_LFSRS 15
2120
2121/* Known Good seed sets */
2122static const u32 main_seedset[BACKOFF_SEEDSET_ROWS][BACKOFF_SEEDSET_LFSRS] = {
2123 {145, 155, 165, 175, 185, 196, 235, 245, 255, 265, 275, 285, 660, 690, 874},
2124 {245, 255, 265, 575, 385, 298, 335, 345, 355, 366, 375, 385, 761, 790, 974},
2125 {145, 155, 165, 175, 185, 196, 235, 245, 255, 265, 275, 285, 660, 690, 874},
2126 {245, 255, 265, 575, 385, 298, 335, 345, 355, 366, 375, 386, 761, 790, 974},
2127 {266, 265, 276, 585, 397, 208, 345, 355, 365, 376, 385, 396, 771, 700, 984},
2128 {266, 265, 276, 586, 397, 208, 346, 355, 365, 376, 285, 396, 771, 700, 984},
2129 {366, 365, 376, 686, 497, 308, 447, 455, 466, 476, 485, 496, 871, 800, 84},
2130 {466, 465, 476, 786, 597, 408, 547, 555, 566, 576, 585, 597, 971, 900, 184} };
2131
2132static const u32 gear_seedset[BACKOFF_SEEDSET_ROWS][BACKOFF_SEEDSET_LFSRS] = {
2133 {251, 262, 273, 324, 319, 508, 375, 364, 341, 371, 398, 193, 375, 30, 295},
2134 {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395},
2135 {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 397},
2136 {251, 262, 273, 324, 319, 508, 375, 364, 341, 371, 398, 193, 375, 30, 295},
2137 {251, 262, 273, 324, 319, 508, 375, 364, 341, 371, 398, 193, 375, 30, 295},
2138 {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395},
2139 {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395},
2140 {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395} };
2141
2142static void nv_gear_backoff_reseed(struct net_device *dev)
2143{
2144 u8 __iomem *base = get_hwbase(dev);
2145 u32 miniseed1, miniseed2, miniseed2_reversed, miniseed3, miniseed3_reversed;
2146 u32 temp, seedset, combinedSeed;
2147 int i;
2148
2149 /* Setup seed for free running LFSR */
2150 /* We are going to read the time stamp counter 3 times
2151 and swizzle bits around to increase randomness */
2152 get_random_bytes(&miniseed1, sizeof(miniseed1));
2153 miniseed1 &= 0x0fff;
2154 if (miniseed1 == 0)
2155 miniseed1 = 0xabc;
2156
2157 get_random_bytes(&miniseed2, sizeof(miniseed2));
2158 miniseed2 &= 0x0fff;
2159 if (miniseed2 == 0)
2160 miniseed2 = 0xabc;
2161 miniseed2_reversed =
2162 ((miniseed2 & 0xF00) >> 8) |
2163 (miniseed2 & 0x0F0) |
2164 ((miniseed2 & 0x00F) << 8);
2165
2166 get_random_bytes(&miniseed3, sizeof(miniseed3));
2167 miniseed3 &= 0x0fff;
2168 if (miniseed3 == 0)
2169 miniseed3 = 0xabc;
2170 miniseed3_reversed =
2171 ((miniseed3 & 0xF00) >> 8) |
2172 (miniseed3 & 0x0F0) |
2173 ((miniseed3 & 0x00F) << 8);
2174
2175 combinedSeed = ((miniseed1 ^ miniseed2_reversed) << 12) |
2176 (miniseed2 ^ miniseed3_reversed);
2177
2178 /* Seeds can not be zero */
2179 if ((combinedSeed & NVREG_BKOFFCTRL_SEED_MASK) == 0)
2180 combinedSeed |= 0x08;
2181 if ((combinedSeed & (NVREG_BKOFFCTRL_SEED_MASK << NVREG_BKOFFCTRL_GEAR)) == 0)
2182 combinedSeed |= 0x8000;
2183
2184 /* No need to disable tx here */
2185 temp = NVREG_BKOFFCTRL_DEFAULT | (0 << NVREG_BKOFFCTRL_SELECT);
2186 temp |= combinedSeed & NVREG_BKOFFCTRL_SEED_MASK;
2187 temp |= combinedSeed >> NVREG_BKOFFCTRL_GEAR;
2188 writel(temp, base + NvRegBackOffControl);
2189
2190 /* Setup seeds for all gear LFSRs. */
2191 get_random_bytes(&seedset, sizeof(seedset));
2192 seedset = seedset % BACKOFF_SEEDSET_ROWS;
2193 for (i = 1; i <= BACKOFF_SEEDSET_LFSRS; i++) {
2194 temp = NVREG_BKOFFCTRL_DEFAULT | (i << NVREG_BKOFFCTRL_SELECT);
2195 temp |= main_seedset[seedset][i-1] & 0x3ff;
2196 temp |= ((gear_seedset[seedset][i-1] & 0x3ff) << NVREG_BKOFFCTRL_GEAR);
2197 writel(temp, base + NvRegBackOffControl);
2198 }
2199}
2200
2201/*
2202 * nv_start_xmit: dev->hard_start_xmit function
2203 * Called with netif_tx_lock held.
2204 */
2205static netdev_tx_t nv_start_xmit(struct sk_buff *skb, struct net_device *dev)
2206{
2207 struct fe_priv *np = netdev_priv(dev);
2208 u32 tx_flags = 0;
2209 u32 tx_flags_extra = (np->desc_ver == DESC_VER_1 ? NV_TX_LASTPACKET : NV_TX2_LASTPACKET);
2210 unsigned int fragments = skb_shinfo(skb)->nr_frags;
2211 unsigned int i;
2212 u32 offset = 0;
2213 u32 bcnt;
2214 u32 size = skb_headlen(skb);
2215 u32 entries = (size >> NV_TX2_TSO_MAX_SHIFT) + ((size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
2216 u32 empty_slots;
2217 struct ring_desc *put_tx;
2218 struct ring_desc *start_tx;
2219 struct ring_desc *prev_tx;
2220 struct nv_skb_map *prev_tx_ctx;
2221 struct nv_skb_map *tmp_tx_ctx = NULL, *start_tx_ctx = NULL;
2222 unsigned long flags;
2223 netdev_tx_t ret = NETDEV_TX_OK;
2224
2225 /* add fragments to entries count */
2226 for (i = 0; i < fragments; i++) {
2227 u32 frag_size = skb_frag_size(&skb_shinfo(skb)->frags[i]);
2228
2229 entries += (frag_size >> NV_TX2_TSO_MAX_SHIFT) +
2230 ((frag_size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
2231 }
2232
2233 spin_lock_irqsave(&np->lock, flags);
2234 empty_slots = nv_get_empty_tx_slots(np);
2235 if (unlikely(empty_slots <= entries)) {
2236 netif_stop_queue(dev);
2237 np->tx_stop = 1;
2238 spin_unlock_irqrestore(&np->lock, flags);
2239
2240 /* When normal packets and/or xmit_more packets fill up
2241 * tx_desc, it is necessary to trigger NIC tx reg.
2242 */
2243 ret = NETDEV_TX_BUSY;
2244 goto txkick;
2245 }
2246 spin_unlock_irqrestore(&np->lock, flags);
2247
2248 start_tx = put_tx = np->put_tx.orig;
2249
2250 /* setup the header buffer */
2251 do {
2252 bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
2253 np->put_tx_ctx->dma = dma_map_single(&np->pci_dev->dev,
2254 skb->data + offset, bcnt,
2255 DMA_TO_DEVICE);
2256 if (unlikely(dma_mapping_error(&np->pci_dev->dev,
2257 np->put_tx_ctx->dma))) {
2258 /* on DMA mapping error - drop the packet */
2259 dev_kfree_skb_any(skb);
2260 u64_stats_update_begin(&np->swstats_tx_syncp);
2261 nv_txrx_stats_inc(stat_tx_dropped);
2262 u64_stats_update_end(&np->swstats_tx_syncp);
2263
2264 ret = NETDEV_TX_OK;
2265
2266 goto dma_error;
2267 }
2268 np->put_tx_ctx->dma_len = bcnt;
2269 np->put_tx_ctx->dma_single = 1;
2270 put_tx->buf = cpu_to_le32(np->put_tx_ctx->dma);
2271 put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
2272
2273 tx_flags = np->tx_flags;
2274 offset += bcnt;
2275 size -= bcnt;
2276 if (unlikely(put_tx++ == np->last_tx.orig))
2277 put_tx = np->tx_ring.orig;
2278 if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
2279 np->put_tx_ctx = np->tx_skb;
2280 } while (size);
2281
2282 /* setup the fragments */
2283 for (i = 0; i < fragments; i++) {
2284 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2285 u32 frag_size = skb_frag_size(frag);
2286 offset = 0;
2287
2288 do {
2289 if (!start_tx_ctx)
2290 start_tx_ctx = tmp_tx_ctx = np->put_tx_ctx;
2291
2292 bcnt = (frag_size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : frag_size;
2293 np->put_tx_ctx->dma = skb_frag_dma_map(
2294 &np->pci_dev->dev,
2295 frag, offset,
2296 bcnt,
2297 DMA_TO_DEVICE);
2298 if (unlikely(dma_mapping_error(&np->pci_dev->dev,
2299 np->put_tx_ctx->dma))) {
2300
2301 /* Unwind the mapped fragments */
2302 do {
2303 nv_unmap_txskb(np, start_tx_ctx);
2304 if (unlikely(tmp_tx_ctx++ == np->last_tx_ctx))
2305 tmp_tx_ctx = np->tx_skb;
2306 } while (tmp_tx_ctx != np->put_tx_ctx);
2307 dev_kfree_skb_any(skb);
2308 np->put_tx_ctx = start_tx_ctx;
2309 u64_stats_update_begin(&np->swstats_tx_syncp);
2310 nv_txrx_stats_inc(stat_tx_dropped);
2311 u64_stats_update_end(&np->swstats_tx_syncp);
2312
2313 ret = NETDEV_TX_OK;
2314
2315 goto dma_error;
2316 }
2317
2318 np->put_tx_ctx->dma_len = bcnt;
2319 np->put_tx_ctx->dma_single = 0;
2320 put_tx->buf = cpu_to_le32(np->put_tx_ctx->dma);
2321 put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
2322
2323 offset += bcnt;
2324 frag_size -= bcnt;
2325 if (unlikely(put_tx++ == np->last_tx.orig))
2326 put_tx = np->tx_ring.orig;
2327 if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
2328 np->put_tx_ctx = np->tx_skb;
2329 } while (frag_size);
2330 }
2331
2332 if (unlikely(put_tx == np->tx_ring.orig))
2333 prev_tx = np->last_tx.orig;
2334 else
2335 prev_tx = put_tx - 1;
2336
2337 if (unlikely(np->put_tx_ctx == np->tx_skb))
2338 prev_tx_ctx = np->last_tx_ctx;
2339 else
2340 prev_tx_ctx = np->put_tx_ctx - 1;
2341
2342 /* set last fragment flag */
2343 prev_tx->flaglen |= cpu_to_le32(tx_flags_extra);
2344
2345 /* save skb in this slot's context area */
2346 prev_tx_ctx->skb = skb;
2347
2348 if (skb_is_gso(skb))
2349 tx_flags_extra = NV_TX2_TSO | (skb_shinfo(skb)->gso_size << NV_TX2_TSO_SHIFT);
2350 else
2351 tx_flags_extra = skb->ip_summed == CHECKSUM_PARTIAL ?
2352 NV_TX2_CHECKSUM_L3 | NV_TX2_CHECKSUM_L4 : 0;
2353
2354 spin_lock_irqsave(&np->lock, flags);
2355
2356 /* set tx flags */
2357 start_tx->flaglen |= cpu_to_le32(tx_flags | tx_flags_extra);
2358
2359 netdev_sent_queue(np->dev, skb->len);
2360
2361 skb_tx_timestamp(skb);
2362
2363 np->put_tx.orig = put_tx;
2364
2365 spin_unlock_irqrestore(&np->lock, flags);
2366
2367txkick:
2368 if (netif_queue_stopped(dev) || !netdev_xmit_more()) {
2369 u32 txrxctl_kick;
2370dma_error:
2371 txrxctl_kick = NVREG_TXRXCTL_KICK | np->txrxctl_bits;
2372 writel(txrxctl_kick, get_hwbase(dev) + NvRegTxRxControl);
2373 }
2374
2375 return ret;
2376}
2377
2378static netdev_tx_t nv_start_xmit_optimized(struct sk_buff *skb,
2379 struct net_device *dev)
2380{
2381 struct fe_priv *np = netdev_priv(dev);
2382 u32 tx_flags = 0;
2383 u32 tx_flags_extra;
2384 unsigned int fragments = skb_shinfo(skb)->nr_frags;
2385 unsigned int i;
2386 u32 offset = 0;
2387 u32 bcnt;
2388 u32 size = skb_headlen(skb);
2389 u32 entries = (size >> NV_TX2_TSO_MAX_SHIFT) + ((size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
2390 u32 empty_slots;
2391 struct ring_desc_ex *put_tx;
2392 struct ring_desc_ex *start_tx;
2393 struct ring_desc_ex *prev_tx;
2394 struct nv_skb_map *prev_tx_ctx;
2395 struct nv_skb_map *start_tx_ctx = NULL;
2396 struct nv_skb_map *tmp_tx_ctx = NULL;
2397 unsigned long flags;
2398 netdev_tx_t ret = NETDEV_TX_OK;
2399
2400 /* add fragments to entries count */
2401 for (i = 0; i < fragments; i++) {
2402 u32 frag_size = skb_frag_size(&skb_shinfo(skb)->frags[i]);
2403
2404 entries += (frag_size >> NV_TX2_TSO_MAX_SHIFT) +
2405 ((frag_size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
2406 }
2407
2408 spin_lock_irqsave(&np->lock, flags);
2409 empty_slots = nv_get_empty_tx_slots(np);
2410 if (unlikely(empty_slots <= entries)) {
2411 netif_stop_queue(dev);
2412 np->tx_stop = 1;
2413 spin_unlock_irqrestore(&np->lock, flags);
2414
2415 /* When normal packets and/or xmit_more packets fill up
2416 * tx_desc, it is necessary to trigger NIC tx reg.
2417 */
2418 ret = NETDEV_TX_BUSY;
2419
2420 goto txkick;
2421 }
2422 spin_unlock_irqrestore(&np->lock, flags);
2423
2424 start_tx = put_tx = np->put_tx.ex;
2425 start_tx_ctx = np->put_tx_ctx;
2426
2427 /* setup the header buffer */
2428 do {
2429 bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
2430 np->put_tx_ctx->dma = dma_map_single(&np->pci_dev->dev,
2431 skb->data + offset, bcnt,
2432 DMA_TO_DEVICE);
2433 if (unlikely(dma_mapping_error(&np->pci_dev->dev,
2434 np->put_tx_ctx->dma))) {
2435 /* on DMA mapping error - drop the packet */
2436 dev_kfree_skb_any(skb);
2437 u64_stats_update_begin(&np->swstats_tx_syncp);
2438 nv_txrx_stats_inc(stat_tx_dropped);
2439 u64_stats_update_end(&np->swstats_tx_syncp);
2440
2441 ret = NETDEV_TX_OK;
2442
2443 goto dma_error;
2444 }
2445 np->put_tx_ctx->dma_len = bcnt;
2446 np->put_tx_ctx->dma_single = 1;
2447 put_tx->bufhigh = cpu_to_le32(dma_high(np->put_tx_ctx->dma));
2448 put_tx->buflow = cpu_to_le32(dma_low(np->put_tx_ctx->dma));
2449 put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
2450
2451 tx_flags = NV_TX2_VALID;
2452 offset += bcnt;
2453 size -= bcnt;
2454 if (unlikely(put_tx++ == np->last_tx.ex))
2455 put_tx = np->tx_ring.ex;
2456 if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
2457 np->put_tx_ctx = np->tx_skb;
2458 } while (size);
2459
2460 /* setup the fragments */
2461 for (i = 0; i < fragments; i++) {
2462 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2463 u32 frag_size = skb_frag_size(frag);
2464 offset = 0;
2465
2466 do {
2467 bcnt = (frag_size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : frag_size;
2468 if (!start_tx_ctx)
2469 start_tx_ctx = tmp_tx_ctx = np->put_tx_ctx;
2470 np->put_tx_ctx->dma = skb_frag_dma_map(
2471 &np->pci_dev->dev,
2472 frag, offset,
2473 bcnt,
2474 DMA_TO_DEVICE);
2475
2476 if (unlikely(dma_mapping_error(&np->pci_dev->dev,
2477 np->put_tx_ctx->dma))) {
2478
2479 /* Unwind the mapped fragments */
2480 do {
2481 nv_unmap_txskb(np, start_tx_ctx);
2482 if (unlikely(tmp_tx_ctx++ == np->last_tx_ctx))
2483 tmp_tx_ctx = np->tx_skb;
2484 } while (tmp_tx_ctx != np->put_tx_ctx);
2485 dev_kfree_skb_any(skb);
2486 np->put_tx_ctx = start_tx_ctx;
2487 u64_stats_update_begin(&np->swstats_tx_syncp);
2488 nv_txrx_stats_inc(stat_tx_dropped);
2489 u64_stats_update_end(&np->swstats_tx_syncp);
2490
2491 ret = NETDEV_TX_OK;
2492
2493 goto dma_error;
2494 }
2495 np->put_tx_ctx->dma_len = bcnt;
2496 np->put_tx_ctx->dma_single = 0;
2497 put_tx->bufhigh = cpu_to_le32(dma_high(np->put_tx_ctx->dma));
2498 put_tx->buflow = cpu_to_le32(dma_low(np->put_tx_ctx->dma));
2499 put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
2500
2501 offset += bcnt;
2502 frag_size -= bcnt;
2503 if (unlikely(put_tx++ == np->last_tx.ex))
2504 put_tx = np->tx_ring.ex;
2505 if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
2506 np->put_tx_ctx = np->tx_skb;
2507 } while (frag_size);
2508 }
2509
2510 if (unlikely(put_tx == np->tx_ring.ex))
2511 prev_tx = np->last_tx.ex;
2512 else
2513 prev_tx = put_tx - 1;
2514
2515 if (unlikely(np->put_tx_ctx == np->tx_skb))
2516 prev_tx_ctx = np->last_tx_ctx;
2517 else
2518 prev_tx_ctx = np->put_tx_ctx - 1;
2519
2520 /* set last fragment flag */
2521 prev_tx->flaglen |= cpu_to_le32(NV_TX2_LASTPACKET);
2522
2523 /* save skb in this slot's context area */
2524 prev_tx_ctx->skb = skb;
2525
2526 if (skb_is_gso(skb))
2527 tx_flags_extra = NV_TX2_TSO | (skb_shinfo(skb)->gso_size << NV_TX2_TSO_SHIFT);
2528 else
2529 tx_flags_extra = skb->ip_summed == CHECKSUM_PARTIAL ?
2530 NV_TX2_CHECKSUM_L3 | NV_TX2_CHECKSUM_L4 : 0;
2531
2532 /* vlan tag */
2533 if (skb_vlan_tag_present(skb))
2534 start_tx->txvlan = cpu_to_le32(NV_TX3_VLAN_TAG_PRESENT |
2535 skb_vlan_tag_get(skb));
2536 else
2537 start_tx->txvlan = 0;
2538
2539 spin_lock_irqsave(&np->lock, flags);
2540
2541 if (np->tx_limit) {
2542 /* Limit the number of outstanding tx. Setup all fragments, but
2543 * do not set the VALID bit on the first descriptor. Save a pointer
2544 * to that descriptor and also for next skb_map element.
2545 */
2546
2547 if (np->tx_pkts_in_progress == NV_TX_LIMIT_COUNT) {
2548 if (!np->tx_change_owner)
2549 np->tx_change_owner = start_tx_ctx;
2550
2551 /* remove VALID bit */
2552 tx_flags &= ~NV_TX2_VALID;
2553 start_tx_ctx->first_tx_desc = start_tx;
2554 start_tx_ctx->next_tx_ctx = np->put_tx_ctx;
2555 np->tx_end_flip = np->put_tx_ctx;
2556 } else {
2557 np->tx_pkts_in_progress++;
2558 }
2559 }
2560
2561 /* set tx flags */
2562 start_tx->flaglen |= cpu_to_le32(tx_flags | tx_flags_extra);
2563
2564 netdev_sent_queue(np->dev, skb->len);
2565
2566 skb_tx_timestamp(skb);
2567
2568 np->put_tx.ex = put_tx;
2569
2570 spin_unlock_irqrestore(&np->lock, flags);
2571
2572txkick:
2573 if (netif_queue_stopped(dev) || !netdev_xmit_more()) {
2574 u32 txrxctl_kick;
2575dma_error:
2576 txrxctl_kick = NVREG_TXRXCTL_KICK | np->txrxctl_bits;
2577 writel(txrxctl_kick, get_hwbase(dev) + NvRegTxRxControl);
2578 }
2579
2580 return ret;
2581}
2582
2583static inline void nv_tx_flip_ownership(struct net_device *dev)
2584{
2585 struct fe_priv *np = netdev_priv(dev);
2586
2587 np->tx_pkts_in_progress--;
2588 if (np->tx_change_owner) {
2589 np->tx_change_owner->first_tx_desc->flaglen |=
2590 cpu_to_le32(NV_TX2_VALID);
2591 np->tx_pkts_in_progress++;
2592
2593 np->tx_change_owner = np->tx_change_owner->next_tx_ctx;
2594 if (np->tx_change_owner == np->tx_end_flip)
2595 np->tx_change_owner = NULL;
2596
2597 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
2598 }
2599}
2600
2601/*
2602 * nv_tx_done: check for completed packets, release the skbs.
2603 *
2604 * Caller must own np->lock.
2605 */
2606static int nv_tx_done(struct net_device *dev, int limit)
2607{
2608 struct fe_priv *np = netdev_priv(dev);
2609 u32 flags;
2610 int tx_work = 0;
2611 struct ring_desc *orig_get_tx = np->get_tx.orig;
2612 unsigned int bytes_compl = 0;
2613
2614 while ((np->get_tx.orig != np->put_tx.orig) &&
2615 !((flags = le32_to_cpu(np->get_tx.orig->flaglen)) & NV_TX_VALID) &&
2616 (tx_work < limit)) {
2617
2618 nv_unmap_txskb(np, np->get_tx_ctx);
2619
2620 if (np->desc_ver == DESC_VER_1) {
2621 if (flags & NV_TX_LASTPACKET) {
2622 if (unlikely(flags & NV_TX_ERROR)) {
2623 if ((flags & NV_TX_RETRYERROR)
2624 && !(flags & NV_TX_RETRYCOUNT_MASK))
2625 nv_legacybackoff_reseed(dev);
2626 } else {
2627 unsigned int len;
2628
2629 u64_stats_update_begin(&np->swstats_tx_syncp);
2630 nv_txrx_stats_inc(stat_tx_packets);
2631 len = np->get_tx_ctx->skb->len;
2632 nv_txrx_stats_add(stat_tx_bytes, len);
2633 u64_stats_update_end(&np->swstats_tx_syncp);
2634 }
2635 bytes_compl += np->get_tx_ctx->skb->len;
2636 dev_kfree_skb_any(np->get_tx_ctx->skb);
2637 np->get_tx_ctx->skb = NULL;
2638 tx_work++;
2639 }
2640 } else {
2641 if (flags & NV_TX2_LASTPACKET) {
2642 if (unlikely(flags & NV_TX2_ERROR)) {
2643 if ((flags & NV_TX2_RETRYERROR)
2644 && !(flags & NV_TX2_RETRYCOUNT_MASK))
2645 nv_legacybackoff_reseed(dev);
2646 } else {
2647 unsigned int len;
2648
2649 u64_stats_update_begin(&np->swstats_tx_syncp);
2650 nv_txrx_stats_inc(stat_tx_packets);
2651 len = np->get_tx_ctx->skb->len;
2652 nv_txrx_stats_add(stat_tx_bytes, len);
2653 u64_stats_update_end(&np->swstats_tx_syncp);
2654 }
2655 bytes_compl += np->get_tx_ctx->skb->len;
2656 dev_kfree_skb_any(np->get_tx_ctx->skb);
2657 np->get_tx_ctx->skb = NULL;
2658 tx_work++;
2659 }
2660 }
2661 if (unlikely(np->get_tx.orig++ == np->last_tx.orig))
2662 np->get_tx.orig = np->tx_ring.orig;
2663 if (unlikely(np->get_tx_ctx++ == np->last_tx_ctx))
2664 np->get_tx_ctx = np->tx_skb;
2665 }
2666
2667 netdev_completed_queue(np->dev, tx_work, bytes_compl);
2668
2669 if (unlikely((np->tx_stop == 1) && (np->get_tx.orig != orig_get_tx))) {
2670 np->tx_stop = 0;
2671 netif_wake_queue(dev);
2672 }
2673 return tx_work;
2674}
2675
2676static int nv_tx_done_optimized(struct net_device *dev, int limit)
2677{
2678 struct fe_priv *np = netdev_priv(dev);
2679 u32 flags;
2680 int tx_work = 0;
2681 struct ring_desc_ex *orig_get_tx = np->get_tx.ex;
2682 unsigned long bytes_cleaned = 0;
2683
2684 while ((np->get_tx.ex != np->put_tx.ex) &&
2685 !((flags = le32_to_cpu(np->get_tx.ex->flaglen)) & NV_TX2_VALID) &&
2686 (tx_work < limit)) {
2687
2688 nv_unmap_txskb(np, np->get_tx_ctx);
2689
2690 if (flags & NV_TX2_LASTPACKET) {
2691 if (unlikely(flags & NV_TX2_ERROR)) {
2692 if ((flags & NV_TX2_RETRYERROR)
2693 && !(flags & NV_TX2_RETRYCOUNT_MASK)) {
2694 if (np->driver_data & DEV_HAS_GEAR_MODE)
2695 nv_gear_backoff_reseed(dev);
2696 else
2697 nv_legacybackoff_reseed(dev);
2698 }
2699 } else {
2700 unsigned int len;
2701
2702 u64_stats_update_begin(&np->swstats_tx_syncp);
2703 nv_txrx_stats_inc(stat_tx_packets);
2704 len = np->get_tx_ctx->skb->len;
2705 nv_txrx_stats_add(stat_tx_bytes, len);
2706 u64_stats_update_end(&np->swstats_tx_syncp);
2707 }
2708
2709 bytes_cleaned += np->get_tx_ctx->skb->len;
2710 dev_kfree_skb_any(np->get_tx_ctx->skb);
2711 np->get_tx_ctx->skb = NULL;
2712 tx_work++;
2713
2714 if (np->tx_limit)
2715 nv_tx_flip_ownership(dev);
2716 }
2717
2718 if (unlikely(np->get_tx.ex++ == np->last_tx.ex))
2719 np->get_tx.ex = np->tx_ring.ex;
2720 if (unlikely(np->get_tx_ctx++ == np->last_tx_ctx))
2721 np->get_tx_ctx = np->tx_skb;
2722 }
2723
2724 netdev_completed_queue(np->dev, tx_work, bytes_cleaned);
2725
2726 if (unlikely((np->tx_stop == 1) && (np->get_tx.ex != orig_get_tx))) {
2727 np->tx_stop = 0;
2728 netif_wake_queue(dev);
2729 }
2730 return tx_work;
2731}
2732
2733/*
2734 * nv_tx_timeout: dev->tx_timeout function
2735 * Called with netif_tx_lock held.
2736 */
2737static void nv_tx_timeout(struct net_device *dev, unsigned int txqueue)
2738{
2739 struct fe_priv *np = netdev_priv(dev);
2740 u8 __iomem *base = get_hwbase(dev);
2741 u32 status;
2742 union ring_type put_tx;
2743 int saved_tx_limit;
2744
2745 if (np->msi_flags & NV_MSI_X_ENABLED)
2746 status = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
2747 else
2748 status = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
2749
2750 netdev_warn(dev, "Got tx_timeout. irq status: %08x\n", status);
2751
2752 if (unlikely(debug_tx_timeout)) {
2753 int i;
2754
2755 netdev_info(dev, "Ring at %lx\n", (unsigned long)np->ring_addr);
2756 netdev_info(dev, "Dumping tx registers\n");
2757 for (i = 0; i <= np->register_size; i += 32) {
2758 netdev_info(dev,
2759 "%3x: %08x %08x %08x %08x "
2760 "%08x %08x %08x %08x\n",
2761 i,
2762 readl(base + i + 0), readl(base + i + 4),
2763 readl(base + i + 8), readl(base + i + 12),
2764 readl(base + i + 16), readl(base + i + 20),
2765 readl(base + i + 24), readl(base + i + 28));
2766 }
2767 netdev_info(dev, "Dumping tx ring\n");
2768 for (i = 0; i < np->tx_ring_size; i += 4) {
2769 if (!nv_optimized(np)) {
2770 netdev_info(dev,
2771 "%03x: %08x %08x // %08x %08x "
2772 "// %08x %08x // %08x %08x\n",
2773 i,
2774 le32_to_cpu(np->tx_ring.orig[i].buf),
2775 le32_to_cpu(np->tx_ring.orig[i].flaglen),
2776 le32_to_cpu(np->tx_ring.orig[i+1].buf),
2777 le32_to_cpu(np->tx_ring.orig[i+1].flaglen),
2778 le32_to_cpu(np->tx_ring.orig[i+2].buf),
2779 le32_to_cpu(np->tx_ring.orig[i+2].flaglen),
2780 le32_to_cpu(np->tx_ring.orig[i+3].buf),
2781 le32_to_cpu(np->tx_ring.orig[i+3].flaglen));
2782 } else {
2783 netdev_info(dev,
2784 "%03x: %08x %08x %08x "
2785 "// %08x %08x %08x "
2786 "// %08x %08x %08x "
2787 "// %08x %08x %08x\n",
2788 i,
2789 le32_to_cpu(np->tx_ring.ex[i].bufhigh),
2790 le32_to_cpu(np->tx_ring.ex[i].buflow),
2791 le32_to_cpu(np->tx_ring.ex[i].flaglen),
2792 le32_to_cpu(np->tx_ring.ex[i+1].bufhigh),
2793 le32_to_cpu(np->tx_ring.ex[i+1].buflow),
2794 le32_to_cpu(np->tx_ring.ex[i+1].flaglen),
2795 le32_to_cpu(np->tx_ring.ex[i+2].bufhigh),
2796 le32_to_cpu(np->tx_ring.ex[i+2].buflow),
2797 le32_to_cpu(np->tx_ring.ex[i+2].flaglen),
2798 le32_to_cpu(np->tx_ring.ex[i+3].bufhigh),
2799 le32_to_cpu(np->tx_ring.ex[i+3].buflow),
2800 le32_to_cpu(np->tx_ring.ex[i+3].flaglen));
2801 }
2802 }
2803 }
2804
2805 spin_lock_irq(&np->lock);
2806
2807 /* 1) stop tx engine */
2808 nv_stop_tx(dev);
2809
2810 /* 2) complete any outstanding tx and do not give HW any limited tx pkts */
2811 saved_tx_limit = np->tx_limit;
2812 np->tx_limit = 0; /* prevent giving HW any limited pkts */
2813 np->tx_stop = 0; /* prevent waking tx queue */
2814 if (!nv_optimized(np))
2815 nv_tx_done(dev, np->tx_ring_size);
2816 else
2817 nv_tx_done_optimized(dev, np->tx_ring_size);
2818
2819 /* save current HW position */
2820 if (np->tx_change_owner)
2821 put_tx.ex = np->tx_change_owner->first_tx_desc;
2822 else
2823 put_tx = np->put_tx;
2824
2825 /* 3) clear all tx state */
2826 nv_drain_tx(dev);
2827 nv_init_tx(dev);
2828
2829 /* 4) restore state to current HW position */
2830 np->get_tx = np->put_tx = put_tx;
2831 np->tx_limit = saved_tx_limit;
2832
2833 /* 5) restart tx engine */
2834 nv_start_tx(dev);
2835 netif_wake_queue(dev);
2836 spin_unlock_irq(&np->lock);
2837}
2838
2839/*
2840 * Called when the nic notices a mismatch between the actual data len on the
2841 * wire and the len indicated in the 802 header
2842 */
2843static int nv_getlen(struct net_device *dev, void *packet, int datalen)
2844{
2845 int hdrlen; /* length of the 802 header */
2846 int protolen; /* length as stored in the proto field */
2847
2848 /* 1) calculate len according to header */
2849 if (((struct vlan_ethhdr *)packet)->h_vlan_proto == htons(ETH_P_8021Q)) {
2850 protolen = ntohs(((struct vlan_ethhdr *)packet)->h_vlan_encapsulated_proto);
2851 hdrlen = VLAN_HLEN;
2852 } else {
2853 protolen = ntohs(((struct ethhdr *)packet)->h_proto);
2854 hdrlen = ETH_HLEN;
2855 }
2856 if (protolen > ETH_DATA_LEN)
2857 return datalen; /* Value in proto field not a len, no checks possible */
2858
2859 protolen += hdrlen;
2860 /* consistency checks: */
2861 if (datalen > ETH_ZLEN) {
2862 if (datalen >= protolen) {
2863 /* more data on wire than in 802 header, trim of
2864 * additional data.
2865 */
2866 return protolen;
2867 } else {
2868 /* less data on wire than mentioned in header.
2869 * Discard the packet.
2870 */
2871 return -1;
2872 }
2873 } else {
2874 /* short packet. Accept only if 802 values are also short */
2875 if (protolen > ETH_ZLEN) {
2876 return -1;
2877 }
2878 return datalen;
2879 }
2880}
2881
2882static void rx_missing_handler(u32 flags, struct fe_priv *np)
2883{
2884 if (flags & NV_RX_MISSEDFRAME) {
2885 u64_stats_update_begin(&np->swstats_rx_syncp);
2886 nv_txrx_stats_inc(stat_rx_missed_errors);
2887 u64_stats_update_end(&np->swstats_rx_syncp);
2888 }
2889}
2890
2891static int nv_rx_process(struct net_device *dev, int limit)
2892{
2893 struct fe_priv *np = netdev_priv(dev);
2894 u32 flags;
2895 int rx_work = 0;
2896 struct sk_buff *skb;
2897 int len;
2898
2899 while ((np->get_rx.orig != np->put_rx.orig) &&
2900 !((flags = le32_to_cpu(np->get_rx.orig->flaglen)) & NV_RX_AVAIL) &&
2901 (rx_work < limit)) {
2902
2903 /*
2904 * the packet is for us - immediately tear down the pci mapping.
2905 * TODO: check if a prefetch of the first cacheline improves
2906 * the performance.
2907 */
2908 dma_unmap_single(&np->pci_dev->dev, np->get_rx_ctx->dma,
2909 np->get_rx_ctx->dma_len,
2910 DMA_FROM_DEVICE);
2911 skb = np->get_rx_ctx->skb;
2912 np->get_rx_ctx->skb = NULL;
2913
2914 /* look at what we actually got: */
2915 if (np->desc_ver == DESC_VER_1) {
2916 if (likely(flags & NV_RX_DESCRIPTORVALID)) {
2917 len = flags & LEN_MASK_V1;
2918 if (unlikely(flags & NV_RX_ERROR)) {
2919 if ((flags & NV_RX_ERROR_MASK) == NV_RX_ERROR4) {
2920 len = nv_getlen(dev, skb->data, len);
2921 if (len < 0) {
2922 dev_kfree_skb(skb);
2923 goto next_pkt;
2924 }
2925 }
2926 /* framing errors are soft errors */
2927 else if ((flags & NV_RX_ERROR_MASK) == NV_RX_FRAMINGERR) {
2928 if (flags & NV_RX_SUBTRACT1)
2929 len--;
2930 }
2931 /* the rest are hard errors */
2932 else {
2933 rx_missing_handler(flags, np);
2934 dev_kfree_skb(skb);
2935 goto next_pkt;
2936 }
2937 }
2938 } else {
2939 dev_kfree_skb(skb);
2940 goto next_pkt;
2941 }
2942 } else {
2943 if (likely(flags & NV_RX2_DESCRIPTORVALID)) {
2944 len = flags & LEN_MASK_V2;
2945 if (unlikely(flags & NV_RX2_ERROR)) {
2946 if ((flags & NV_RX2_ERROR_MASK) == NV_RX2_ERROR4) {
2947 len = nv_getlen(dev, skb->data, len);
2948 if (len < 0) {
2949 dev_kfree_skb(skb);
2950 goto next_pkt;
2951 }
2952 }
2953 /* framing errors are soft errors */
2954 else if ((flags & NV_RX2_ERROR_MASK) == NV_RX2_FRAMINGERR) {
2955 if (flags & NV_RX2_SUBTRACT1)
2956 len--;
2957 }
2958 /* the rest are hard errors */
2959 else {
2960 dev_kfree_skb(skb);
2961 goto next_pkt;
2962 }
2963 }
2964 if (((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_TCP) || /*ip and tcp */
2965 ((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_UDP)) /*ip and udp */
2966 skb->ip_summed = CHECKSUM_UNNECESSARY;
2967 } else {
2968 dev_kfree_skb(skb);
2969 goto next_pkt;
2970 }
2971 }
2972 /* got a valid packet - forward it to the network core */
2973 skb_put(skb, len);
2974 skb->protocol = eth_type_trans(skb, dev);
2975 napi_gro_receive(&np->napi, skb);
2976 u64_stats_update_begin(&np->swstats_rx_syncp);
2977 nv_txrx_stats_inc(stat_rx_packets);
2978 nv_txrx_stats_add(stat_rx_bytes, len);
2979 u64_stats_update_end(&np->swstats_rx_syncp);
2980next_pkt:
2981 if (unlikely(np->get_rx.orig++ == np->last_rx.orig))
2982 np->get_rx.orig = np->rx_ring.orig;
2983 if (unlikely(np->get_rx_ctx++ == np->last_rx_ctx))
2984 np->get_rx_ctx = np->rx_skb;
2985
2986 rx_work++;
2987 }
2988
2989 return rx_work;
2990}
2991
2992static int nv_rx_process_optimized(struct net_device *dev, int limit)
2993{
2994 struct fe_priv *np = netdev_priv(dev);
2995 u32 flags;
2996 u32 vlanflags = 0;
2997 int rx_work = 0;
2998 struct sk_buff *skb;
2999 int len;
3000
3001 while ((np->get_rx.ex != np->put_rx.ex) &&
3002 !((flags = le32_to_cpu(np->get_rx.ex->flaglen)) & NV_RX2_AVAIL) &&
3003 (rx_work < limit)) {
3004
3005 /*
3006 * the packet is for us - immediately tear down the pci mapping.
3007 * TODO: check if a prefetch of the first cacheline improves
3008 * the performance.
3009 */
3010 dma_unmap_single(&np->pci_dev->dev, np->get_rx_ctx->dma,
3011 np->get_rx_ctx->dma_len,
3012 DMA_FROM_DEVICE);
3013 skb = np->get_rx_ctx->skb;
3014 np->get_rx_ctx->skb = NULL;
3015
3016 /* look at what we actually got: */
3017 if (likely(flags & NV_RX2_DESCRIPTORVALID)) {
3018 len = flags & LEN_MASK_V2;
3019 if (unlikely(flags & NV_RX2_ERROR)) {
3020 if ((flags & NV_RX2_ERROR_MASK) == NV_RX2_ERROR4) {
3021 len = nv_getlen(dev, skb->data, len);
3022 if (len < 0) {
3023 dev_kfree_skb(skb);
3024 goto next_pkt;
3025 }
3026 }
3027 /* framing errors are soft errors */
3028 else if ((flags & NV_RX2_ERROR_MASK) == NV_RX2_FRAMINGERR) {
3029 if (flags & NV_RX2_SUBTRACT1)
3030 len--;
3031 }
3032 /* the rest are hard errors */
3033 else {
3034 dev_kfree_skb(skb);
3035 goto next_pkt;
3036 }
3037 }
3038
3039 if (((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_TCP) || /*ip and tcp */
3040 ((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_UDP)) /*ip and udp */
3041 skb->ip_summed = CHECKSUM_UNNECESSARY;
3042
3043 /* got a valid packet - forward it to the network core */
3044 skb_put(skb, len);
3045 skb->protocol = eth_type_trans(skb, dev);
3046 prefetch(skb->data);
3047
3048 vlanflags = le32_to_cpu(np->get_rx.ex->buflow);
3049
3050 /*
3051 * There's need to check for NETIF_F_HW_VLAN_CTAG_RX
3052 * here. Even if vlan rx accel is disabled,
3053 * NV_RX3_VLAN_TAG_PRESENT is pseudo randomly set.
3054 */
3055 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX &&
3056 vlanflags & NV_RX3_VLAN_TAG_PRESENT) {
3057 u16 vid = vlanflags & NV_RX3_VLAN_TAG_MASK;
3058
3059 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
3060 }
3061 napi_gro_receive(&np->napi, skb);
3062 u64_stats_update_begin(&np->swstats_rx_syncp);
3063 nv_txrx_stats_inc(stat_rx_packets);
3064 nv_txrx_stats_add(stat_rx_bytes, len);
3065 u64_stats_update_end(&np->swstats_rx_syncp);
3066 } else {
3067 dev_kfree_skb(skb);
3068 }
3069next_pkt:
3070 if (unlikely(np->get_rx.ex++ == np->last_rx.ex))
3071 np->get_rx.ex = np->rx_ring.ex;
3072 if (unlikely(np->get_rx_ctx++ == np->last_rx_ctx))
3073 np->get_rx_ctx = np->rx_skb;
3074
3075 rx_work++;
3076 }
3077
3078 return rx_work;
3079}
3080
3081static void set_bufsize(struct net_device *dev)
3082{
3083 struct fe_priv *np = netdev_priv(dev);
3084
3085 if (dev->mtu <= ETH_DATA_LEN)
3086 np->rx_buf_sz = ETH_DATA_LEN + NV_RX_HEADERS;
3087 else
3088 np->rx_buf_sz = dev->mtu + NV_RX_HEADERS;
3089}
3090
3091/*
3092 * nv_change_mtu: dev->change_mtu function
3093 * Called with RTNL held for read.
3094 */
3095static int nv_change_mtu(struct net_device *dev, int new_mtu)
3096{
3097 struct fe_priv *np = netdev_priv(dev);
3098 int old_mtu;
3099
3100 old_mtu = dev->mtu;
3101 WRITE_ONCE(dev->mtu, new_mtu);
3102
3103 /* return early if the buffer sizes will not change */
3104 if (old_mtu <= ETH_DATA_LEN && new_mtu <= ETH_DATA_LEN)
3105 return 0;
3106
3107 /* synchronized against open : rtnl_lock() held by caller */
3108 if (netif_running(dev)) {
3109 u8 __iomem *base = get_hwbase(dev);
3110 /*
3111 * It seems that the nic preloads valid ring entries into an
3112 * internal buffer. The procedure for flushing everything is
3113 * guessed, there is probably a simpler approach.
3114 * Changing the MTU is a rare event, it shouldn't matter.
3115 */
3116 nv_disable_irq(dev);
3117 nv_napi_disable(dev);
3118 netif_tx_lock_bh(dev);
3119 netif_addr_lock(dev);
3120 spin_lock(&np->lock);
3121 /* stop engines */
3122 nv_stop_rxtx(dev);
3123 nv_txrx_reset(dev);
3124 /* drain rx queue */
3125 nv_drain_rxtx(dev);
3126 /* reinit driver view of the rx queue */
3127 set_bufsize(dev);
3128 if (nv_init_ring(dev)) {
3129 if (!np->in_shutdown)
3130 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3131 }
3132 /* reinit nic view of the rx queue */
3133 writel(np->rx_buf_sz, base + NvRegOffloadConfig);
3134 setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
3135 writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
3136 base + NvRegRingSizes);
3137 pci_push(base);
3138 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
3139 pci_push(base);
3140
3141 /* restart rx engine */
3142 nv_start_rxtx(dev);
3143 spin_unlock(&np->lock);
3144 netif_addr_unlock(dev);
3145 netif_tx_unlock_bh(dev);
3146 nv_napi_enable(dev);
3147 nv_enable_irq(dev);
3148 }
3149 return 0;
3150}
3151
3152static void nv_copy_mac_to_hw(struct net_device *dev)
3153{
3154 u8 __iomem *base = get_hwbase(dev);
3155 u32 mac[2];
3156
3157 mac[0] = (dev->dev_addr[0] << 0) + (dev->dev_addr[1] << 8) +
3158 (dev->dev_addr[2] << 16) + (dev->dev_addr[3] << 24);
3159 mac[1] = (dev->dev_addr[4] << 0) + (dev->dev_addr[5] << 8);
3160
3161 writel(mac[0], base + NvRegMacAddrA);
3162 writel(mac[1], base + NvRegMacAddrB);
3163}
3164
3165/*
3166 * nv_set_mac_address: dev->set_mac_address function
3167 * Called with rtnl_lock() held.
3168 */
3169static int nv_set_mac_address(struct net_device *dev, void *addr)
3170{
3171 struct fe_priv *np = netdev_priv(dev);
3172 struct sockaddr *macaddr = (struct sockaddr *)addr;
3173
3174 if (!is_valid_ether_addr(macaddr->sa_data))
3175 return -EADDRNOTAVAIL;
3176
3177 /* synchronized against open : rtnl_lock() held by caller */
3178 eth_hw_addr_set(dev, macaddr->sa_data);
3179
3180 if (netif_running(dev)) {
3181 netif_tx_lock_bh(dev);
3182 netif_addr_lock(dev);
3183 spin_lock_irq(&np->lock);
3184
3185 /* stop rx engine */
3186 nv_stop_rx(dev);
3187
3188 /* set mac address */
3189 nv_copy_mac_to_hw(dev);
3190
3191 /* restart rx engine */
3192 nv_start_rx(dev);
3193 spin_unlock_irq(&np->lock);
3194 netif_addr_unlock(dev);
3195 netif_tx_unlock_bh(dev);
3196 } else {
3197 nv_copy_mac_to_hw(dev);
3198 }
3199 return 0;
3200}
3201
3202/*
3203 * nv_set_multicast: dev->set_multicast function
3204 * Called with netif_tx_lock held.
3205 */
3206static void nv_set_multicast(struct net_device *dev)
3207{
3208 struct fe_priv *np = netdev_priv(dev);
3209 u8 __iomem *base = get_hwbase(dev);
3210 u32 addr[2];
3211 u32 mask[2];
3212 u32 pff = readl(base + NvRegPacketFilterFlags) & NVREG_PFF_PAUSE_RX;
3213
3214 memset(addr, 0, sizeof(addr));
3215 memset(mask, 0, sizeof(mask));
3216
3217 if (dev->flags & IFF_PROMISC) {
3218 pff |= NVREG_PFF_PROMISC;
3219 } else {
3220 pff |= NVREG_PFF_MYADDR;
3221
3222 if (dev->flags & IFF_ALLMULTI || !netdev_mc_empty(dev)) {
3223 u32 alwaysOff[2];
3224 u32 alwaysOn[2];
3225
3226 alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0xffffffff;
3227 if (dev->flags & IFF_ALLMULTI) {
3228 alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0;
3229 } else {
3230 struct netdev_hw_addr *ha;
3231
3232 netdev_for_each_mc_addr(ha, dev) {
3233 unsigned char *hw_addr = ha->addr;
3234 u32 a, b;
3235
3236 a = le32_to_cpu(*(__le32 *) hw_addr);
3237 b = le16_to_cpu(*(__le16 *) (&hw_addr[4]));
3238 alwaysOn[0] &= a;
3239 alwaysOff[0] &= ~a;
3240 alwaysOn[1] &= b;
3241 alwaysOff[1] &= ~b;
3242 }
3243 }
3244 addr[0] = alwaysOn[0];
3245 addr[1] = alwaysOn[1];
3246 mask[0] = alwaysOn[0] | alwaysOff[0];
3247 mask[1] = alwaysOn[1] | alwaysOff[1];
3248 } else {
3249 mask[0] = NVREG_MCASTMASKA_NONE;
3250 mask[1] = NVREG_MCASTMASKB_NONE;
3251 }
3252 }
3253 addr[0] |= NVREG_MCASTADDRA_FORCE;
3254 pff |= NVREG_PFF_ALWAYS;
3255 spin_lock_irq(&np->lock);
3256 nv_stop_rx(dev);
3257 writel(addr[0], base + NvRegMulticastAddrA);
3258 writel(addr[1], base + NvRegMulticastAddrB);
3259 writel(mask[0], base + NvRegMulticastMaskA);
3260 writel(mask[1], base + NvRegMulticastMaskB);
3261 writel(pff, base + NvRegPacketFilterFlags);
3262 nv_start_rx(dev);
3263 spin_unlock_irq(&np->lock);
3264}
3265
3266static void nv_update_pause(struct net_device *dev, u32 pause_flags)
3267{
3268 struct fe_priv *np = netdev_priv(dev);
3269 u8 __iomem *base = get_hwbase(dev);
3270
3271 np->pause_flags &= ~(NV_PAUSEFRAME_TX_ENABLE | NV_PAUSEFRAME_RX_ENABLE);
3272
3273 if (np->pause_flags & NV_PAUSEFRAME_RX_CAPABLE) {
3274 u32 pff = readl(base + NvRegPacketFilterFlags) & ~NVREG_PFF_PAUSE_RX;
3275 if (pause_flags & NV_PAUSEFRAME_RX_ENABLE) {
3276 writel(pff|NVREG_PFF_PAUSE_RX, base + NvRegPacketFilterFlags);
3277 np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
3278 } else {
3279 writel(pff, base + NvRegPacketFilterFlags);
3280 }
3281 }
3282 if (np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE) {
3283 u32 regmisc = readl(base + NvRegMisc1) & ~NVREG_MISC1_PAUSE_TX;
3284 if (pause_flags & NV_PAUSEFRAME_TX_ENABLE) {
3285 u32 pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V1;
3286 if (np->driver_data & DEV_HAS_PAUSEFRAME_TX_V2)
3287 pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V2;
3288 if (np->driver_data & DEV_HAS_PAUSEFRAME_TX_V3) {
3289 pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V3;
3290 /* limit the number of tx pause frames to a default of 8 */
3291 writel(readl(base + NvRegTxPauseFrameLimit)|NVREG_TX_PAUSEFRAMELIMIT_ENABLE, base + NvRegTxPauseFrameLimit);
3292 }
3293 writel(pause_enable, base + NvRegTxPauseFrame);
3294 writel(regmisc|NVREG_MISC1_PAUSE_TX, base + NvRegMisc1);
3295 np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3296 } else {
3297 writel(NVREG_TX_PAUSEFRAME_DISABLE, base + NvRegTxPauseFrame);
3298 writel(regmisc, base + NvRegMisc1);
3299 }
3300 }
3301}
3302
3303static void nv_force_linkspeed(struct net_device *dev, int speed, int duplex)
3304{
3305 struct fe_priv *np = netdev_priv(dev);
3306 u8 __iomem *base = get_hwbase(dev);
3307 u32 phyreg, txreg;
3308 int mii_status;
3309
3310 np->linkspeed = NVREG_LINKSPEED_FORCE|speed;
3311 np->duplex = duplex;
3312
3313 /* see if gigabit phy */
3314 mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
3315 if (mii_status & PHY_GIGABIT) {
3316 np->gigabit = PHY_GIGABIT;
3317 phyreg = readl(base + NvRegSlotTime);
3318 phyreg &= ~(0x3FF00);
3319 if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_10)
3320 phyreg |= NVREG_SLOTTIME_10_100_FULL;
3321 else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_100)
3322 phyreg |= NVREG_SLOTTIME_10_100_FULL;
3323 else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_1000)
3324 phyreg |= NVREG_SLOTTIME_1000_FULL;
3325 writel(phyreg, base + NvRegSlotTime);
3326 }
3327
3328 phyreg = readl(base + NvRegPhyInterface);
3329 phyreg &= ~(PHY_HALF|PHY_100|PHY_1000);
3330 if (np->duplex == 0)
3331 phyreg |= PHY_HALF;
3332 if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_100)
3333 phyreg |= PHY_100;
3334 else if ((np->linkspeed & NVREG_LINKSPEED_MASK) ==
3335 NVREG_LINKSPEED_1000)
3336 phyreg |= PHY_1000;
3337 writel(phyreg, base + NvRegPhyInterface);
3338
3339 if (phyreg & PHY_RGMII) {
3340 if ((np->linkspeed & NVREG_LINKSPEED_MASK) ==
3341 NVREG_LINKSPEED_1000)
3342 txreg = NVREG_TX_DEFERRAL_RGMII_1000;
3343 else
3344 txreg = NVREG_TX_DEFERRAL_RGMII_10_100;
3345 } else {
3346 txreg = NVREG_TX_DEFERRAL_DEFAULT;
3347 }
3348 writel(txreg, base + NvRegTxDeferral);
3349
3350 if (np->desc_ver == DESC_VER_1) {
3351 txreg = NVREG_TX_WM_DESC1_DEFAULT;
3352 } else {
3353 if ((np->linkspeed & NVREG_LINKSPEED_MASK) ==
3354 NVREG_LINKSPEED_1000)
3355 txreg = NVREG_TX_WM_DESC2_3_1000;
3356 else
3357 txreg = NVREG_TX_WM_DESC2_3_DEFAULT;
3358 }
3359 writel(txreg, base + NvRegTxWatermark);
3360
3361 writel(NVREG_MISC1_FORCE | (np->duplex ? 0 : NVREG_MISC1_HD),
3362 base + NvRegMisc1);
3363 pci_push(base);
3364 writel(np->linkspeed, base + NvRegLinkSpeed);
3365 pci_push(base);
3366}
3367
3368/**
3369 * nv_update_linkspeed - Setup the MAC according to the link partner
3370 * @dev: Network device to be configured
3371 *
3372 * The function queries the PHY and checks if there is a link partner.
3373 * If yes, then it sets up the MAC accordingly. Otherwise, the MAC is
3374 * set to 10 MBit HD.
3375 *
3376 * The function returns 0 if there is no link partner and 1 if there is
3377 * a good link partner.
3378 */
3379static int nv_update_linkspeed(struct net_device *dev)
3380{
3381 struct fe_priv *np = netdev_priv(dev);
3382 u8 __iomem *base = get_hwbase(dev);
3383 int adv = 0;
3384 int lpa = 0;
3385 int adv_lpa, adv_pause, lpa_pause;
3386 int newls = np->linkspeed;
3387 int newdup = np->duplex;
3388 int mii_status;
3389 u32 bmcr;
3390 int retval = 0;
3391 u32 control_1000, status_1000, phyreg, pause_flags, txreg;
3392 u32 txrxFlags = 0;
3393 u32 phy_exp;
3394
3395 /* If device loopback is enabled, set carrier on and enable max link
3396 * speed.
3397 */
3398 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
3399 if (bmcr & BMCR_LOOPBACK) {
3400 if (netif_running(dev)) {
3401 nv_force_linkspeed(dev, NVREG_LINKSPEED_1000, 1);
3402 if (!netif_carrier_ok(dev))
3403 netif_carrier_on(dev);
3404 }
3405 return 1;
3406 }
3407
3408 /* BMSR_LSTATUS is latched, read it twice:
3409 * we want the current value.
3410 */
3411 mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
3412 mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
3413
3414 if (!(mii_status & BMSR_LSTATUS)) {
3415 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3416 newdup = 0;
3417 retval = 0;
3418 goto set_speed;
3419 }
3420
3421 if (np->autoneg == 0) {
3422 if (np->fixed_mode & LPA_100FULL) {
3423 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
3424 newdup = 1;
3425 } else if (np->fixed_mode & LPA_100HALF) {
3426 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
3427 newdup = 0;
3428 } else if (np->fixed_mode & LPA_10FULL) {
3429 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3430 newdup = 1;
3431 } else {
3432 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3433 newdup = 0;
3434 }
3435 retval = 1;
3436 goto set_speed;
3437 }
3438 /* check auto negotiation is complete */
3439 if (!(mii_status & BMSR_ANEGCOMPLETE)) {
3440 /* still in autonegotiation - configure nic for 10 MBit HD and wait. */
3441 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3442 newdup = 0;
3443 retval = 0;
3444 goto set_speed;
3445 }
3446
3447 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
3448 lpa = mii_rw(dev, np->phyaddr, MII_LPA, MII_READ);
3449
3450 retval = 1;
3451 if (np->gigabit == PHY_GIGABIT) {
3452 control_1000 = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
3453 status_1000 = mii_rw(dev, np->phyaddr, MII_STAT1000, MII_READ);
3454
3455 if ((control_1000 & ADVERTISE_1000FULL) &&
3456 (status_1000 & LPA_1000FULL)) {
3457 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_1000;
3458 newdup = 1;
3459 goto set_speed;
3460 }
3461 }
3462
3463 /* FIXME: handle parallel detection properly */
3464 adv_lpa = lpa & adv;
3465 if (adv_lpa & LPA_100FULL) {
3466 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
3467 newdup = 1;
3468 } else if (adv_lpa & LPA_100HALF) {
3469 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
3470 newdup = 0;
3471 } else if (adv_lpa & LPA_10FULL) {
3472 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3473 newdup = 1;
3474 } else if (adv_lpa & LPA_10HALF) {
3475 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3476 newdup = 0;
3477 } else {
3478 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3479 newdup = 0;
3480 }
3481
3482set_speed:
3483 if (np->duplex == newdup && np->linkspeed == newls)
3484 return retval;
3485
3486 np->duplex = newdup;
3487 np->linkspeed = newls;
3488
3489 /* The transmitter and receiver must be restarted for safe update */
3490 if (readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_START) {
3491 txrxFlags |= NV_RESTART_TX;
3492 nv_stop_tx(dev);
3493 }
3494 if (readl(base + NvRegReceiverControl) & NVREG_RCVCTL_START) {
3495 txrxFlags |= NV_RESTART_RX;
3496 nv_stop_rx(dev);
3497 }
3498
3499 if (np->gigabit == PHY_GIGABIT) {
3500 phyreg = readl(base + NvRegSlotTime);
3501 phyreg &= ~(0x3FF00);
3502 if (((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_10) ||
3503 ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_100))
3504 phyreg |= NVREG_SLOTTIME_10_100_FULL;
3505 else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_1000)
3506 phyreg |= NVREG_SLOTTIME_1000_FULL;
3507 writel(phyreg, base + NvRegSlotTime);
3508 }
3509
3510 phyreg = readl(base + NvRegPhyInterface);
3511 phyreg &= ~(PHY_HALF|PHY_100|PHY_1000);
3512 if (np->duplex == 0)
3513 phyreg |= PHY_HALF;
3514 if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_100)
3515 phyreg |= PHY_100;
3516 else if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000)
3517 phyreg |= PHY_1000;
3518 writel(phyreg, base + NvRegPhyInterface);
3519
3520 phy_exp = mii_rw(dev, np->phyaddr, MII_EXPANSION, MII_READ) & EXPANSION_NWAY; /* autoneg capable */
3521 if (phyreg & PHY_RGMII) {
3522 if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000) {
3523 txreg = NVREG_TX_DEFERRAL_RGMII_1000;
3524 } else {
3525 if (!phy_exp && !np->duplex && (np->driver_data & DEV_HAS_COLLISION_FIX)) {
3526 if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_10)
3527 txreg = NVREG_TX_DEFERRAL_RGMII_STRETCH_10;
3528 else
3529 txreg = NVREG_TX_DEFERRAL_RGMII_STRETCH_100;
3530 } else {
3531 txreg = NVREG_TX_DEFERRAL_RGMII_10_100;
3532 }
3533 }
3534 } else {
3535 if (!phy_exp && !np->duplex && (np->driver_data & DEV_HAS_COLLISION_FIX))
3536 txreg = NVREG_TX_DEFERRAL_MII_STRETCH;
3537 else
3538 txreg = NVREG_TX_DEFERRAL_DEFAULT;
3539 }
3540 writel(txreg, base + NvRegTxDeferral);
3541
3542 if (np->desc_ver == DESC_VER_1) {
3543 txreg = NVREG_TX_WM_DESC1_DEFAULT;
3544 } else {
3545 if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000)
3546 txreg = NVREG_TX_WM_DESC2_3_1000;
3547 else
3548 txreg = NVREG_TX_WM_DESC2_3_DEFAULT;
3549 }
3550 writel(txreg, base + NvRegTxWatermark);
3551
3552 writel(NVREG_MISC1_FORCE | (np->duplex ? 0 : NVREG_MISC1_HD),
3553 base + NvRegMisc1);
3554 pci_push(base);
3555 writel(np->linkspeed, base + NvRegLinkSpeed);
3556 pci_push(base);
3557
3558 pause_flags = 0;
3559 /* setup pause frame */
3560 if (netif_running(dev) && (np->duplex != 0)) {
3561 if (np->autoneg && np->pause_flags & NV_PAUSEFRAME_AUTONEG) {
3562 adv_pause = adv & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
3563 lpa_pause = lpa & (LPA_PAUSE_CAP | LPA_PAUSE_ASYM);
3564
3565 switch (adv_pause) {
3566 case ADVERTISE_PAUSE_CAP:
3567 if (lpa_pause & LPA_PAUSE_CAP) {
3568 pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
3569 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
3570 pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3571 }
3572 break;
3573 case ADVERTISE_PAUSE_ASYM:
3574 if (lpa_pause == (LPA_PAUSE_CAP | LPA_PAUSE_ASYM))
3575 pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3576 break;
3577 case ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM:
3578 if (lpa_pause & LPA_PAUSE_CAP) {
3579 pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
3580 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
3581 pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3582 }
3583 if (lpa_pause == LPA_PAUSE_ASYM)
3584 pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
3585 break;
3586 }
3587 } else {
3588 pause_flags = np->pause_flags;
3589 }
3590 }
3591 nv_update_pause(dev, pause_flags);
3592
3593 if (txrxFlags & NV_RESTART_TX)
3594 nv_start_tx(dev);
3595 if (txrxFlags & NV_RESTART_RX)
3596 nv_start_rx(dev);
3597
3598 return retval;
3599}
3600
3601static void nv_linkchange(struct net_device *dev)
3602{
3603 if (nv_update_linkspeed(dev)) {
3604 if (!netif_carrier_ok(dev)) {
3605 netif_carrier_on(dev);
3606 netdev_info(dev, "link up\n");
3607 nv_txrx_gate(dev, false);
3608 nv_start_rx(dev);
3609 }
3610 } else {
3611 if (netif_carrier_ok(dev)) {
3612 netif_carrier_off(dev);
3613 netdev_info(dev, "link down\n");
3614 nv_txrx_gate(dev, true);
3615 nv_stop_rx(dev);
3616 }
3617 }
3618}
3619
3620static void nv_link_irq(struct net_device *dev)
3621{
3622 u8 __iomem *base = get_hwbase(dev);
3623 u32 miistat;
3624
3625 miistat = readl(base + NvRegMIIStatus);
3626 writel(NVREG_MIISTAT_LINKCHANGE, base + NvRegMIIStatus);
3627
3628 if (miistat & (NVREG_MIISTAT_LINKCHANGE))
3629 nv_linkchange(dev);
3630}
3631
3632static void nv_msi_workaround(struct fe_priv *np)
3633{
3634
3635 /* Need to toggle the msi irq mask within the ethernet device,
3636 * otherwise, future interrupts will not be detected.
3637 */
3638 if (np->msi_flags & NV_MSI_ENABLED) {
3639 u8 __iomem *base = np->base;
3640
3641 writel(0, base + NvRegMSIIrqMask);
3642 writel(NVREG_MSI_VECTOR_0_ENABLED, base + NvRegMSIIrqMask);
3643 }
3644}
3645
3646static inline int nv_change_interrupt_mode(struct net_device *dev, int total_work)
3647{
3648 struct fe_priv *np = netdev_priv(dev);
3649
3650 if (optimization_mode == NV_OPTIMIZATION_MODE_DYNAMIC) {
3651 if (total_work > NV_DYNAMIC_THRESHOLD) {
3652 /* transition to poll based interrupts */
3653 np->quiet_count = 0;
3654 if (np->irqmask != NVREG_IRQMASK_CPU) {
3655 np->irqmask = NVREG_IRQMASK_CPU;
3656 return 1;
3657 }
3658 } else {
3659 if (np->quiet_count < NV_DYNAMIC_MAX_QUIET_COUNT) {
3660 np->quiet_count++;
3661 } else {
3662 /* reached a period of low activity, switch
3663 to per tx/rx packet interrupts */
3664 if (np->irqmask != NVREG_IRQMASK_THROUGHPUT) {
3665 np->irqmask = NVREG_IRQMASK_THROUGHPUT;
3666 return 1;
3667 }
3668 }
3669 }
3670 }
3671 return 0;
3672}
3673
3674static irqreturn_t nv_nic_irq(int foo, void *data)
3675{
3676 struct net_device *dev = (struct net_device *) data;
3677 struct fe_priv *np = netdev_priv(dev);
3678 u8 __iomem *base = get_hwbase(dev);
3679
3680 if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
3681 np->events = readl(base + NvRegIrqStatus);
3682 writel(np->events, base + NvRegIrqStatus);
3683 } else {
3684 np->events = readl(base + NvRegMSIXIrqStatus);
3685 writel(np->events, base + NvRegMSIXIrqStatus);
3686 }
3687 if (!(np->events & np->irqmask))
3688 return IRQ_NONE;
3689
3690 nv_msi_workaround(np);
3691
3692 if (napi_schedule_prep(&np->napi)) {
3693 /*
3694 * Disable further irq's (msix not enabled with napi)
3695 */
3696 writel(0, base + NvRegIrqMask);
3697 __napi_schedule(&np->napi);
3698 }
3699
3700 return IRQ_HANDLED;
3701}
3702
3703/* All _optimized functions are used to help increase performance
3704 * (reduce CPU and increase throughput). They use descripter version 3,
3705 * compiler directives, and reduce memory accesses.
3706 */
3707static irqreturn_t nv_nic_irq_optimized(int foo, void *data)
3708{
3709 struct net_device *dev = (struct net_device *) data;
3710 struct fe_priv *np = netdev_priv(dev);
3711 u8 __iomem *base = get_hwbase(dev);
3712
3713 if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
3714 np->events = readl(base + NvRegIrqStatus);
3715 writel(np->events, base + NvRegIrqStatus);
3716 } else {
3717 np->events = readl(base + NvRegMSIXIrqStatus);
3718 writel(np->events, base + NvRegMSIXIrqStatus);
3719 }
3720 if (!(np->events & np->irqmask))
3721 return IRQ_NONE;
3722
3723 nv_msi_workaround(np);
3724
3725 if (napi_schedule_prep(&np->napi)) {
3726 /*
3727 * Disable further irq's (msix not enabled with napi)
3728 */
3729 writel(0, base + NvRegIrqMask);
3730 __napi_schedule(&np->napi);
3731 }
3732
3733 return IRQ_HANDLED;
3734}
3735
3736static irqreturn_t nv_nic_irq_tx(int foo, void *data)
3737{
3738 struct net_device *dev = (struct net_device *) data;
3739 struct fe_priv *np = netdev_priv(dev);
3740 u8 __iomem *base = get_hwbase(dev);
3741 u32 events;
3742 int i;
3743 unsigned long flags;
3744
3745 for (i = 0;; i++) {
3746 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_TX_ALL;
3747 writel(events, base + NvRegMSIXIrqStatus);
3748 netdev_dbg(dev, "tx irq events: %08x\n", events);
3749 if (!(events & np->irqmask))
3750 break;
3751
3752 spin_lock_irqsave(&np->lock, flags);
3753 nv_tx_done_optimized(dev, TX_WORK_PER_LOOP);
3754 spin_unlock_irqrestore(&np->lock, flags);
3755
3756 if (unlikely(i > max_interrupt_work)) {
3757 spin_lock_irqsave(&np->lock, flags);
3758 /* disable interrupts on the nic */
3759 writel(NVREG_IRQ_TX_ALL, base + NvRegIrqMask);
3760 pci_push(base);
3761
3762 if (!np->in_shutdown) {
3763 np->nic_poll_irq |= NVREG_IRQ_TX_ALL;
3764 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3765 }
3766 spin_unlock_irqrestore(&np->lock, flags);
3767 netdev_dbg(dev, "%s: too many iterations (%d)\n",
3768 __func__, i);
3769 break;
3770 }
3771
3772 }
3773
3774 return IRQ_RETVAL(i);
3775}
3776
3777static int nv_napi_poll(struct napi_struct *napi, int budget)
3778{
3779 struct fe_priv *np = container_of(napi, struct fe_priv, napi);
3780 struct net_device *dev = np->dev;
3781 u8 __iomem *base = get_hwbase(dev);
3782 unsigned long flags;
3783 int retcode;
3784 int rx_count, tx_work = 0, rx_work = 0;
3785
3786 do {
3787 if (!nv_optimized(np)) {
3788 spin_lock_irqsave(&np->lock, flags);
3789 tx_work += nv_tx_done(dev, np->tx_ring_size);
3790 spin_unlock_irqrestore(&np->lock, flags);
3791
3792 rx_count = nv_rx_process(dev, budget - rx_work);
3793 retcode = nv_alloc_rx(dev);
3794 } else {
3795 spin_lock_irqsave(&np->lock, flags);
3796 tx_work += nv_tx_done_optimized(dev, np->tx_ring_size);
3797 spin_unlock_irqrestore(&np->lock, flags);
3798
3799 rx_count = nv_rx_process_optimized(dev,
3800 budget - rx_work);
3801 retcode = nv_alloc_rx_optimized(dev);
3802 }
3803 } while (retcode == 0 &&
3804 rx_count > 0 && (rx_work += rx_count) < budget);
3805
3806 if (retcode) {
3807 spin_lock_irqsave(&np->lock, flags);
3808 if (!np->in_shutdown)
3809 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3810 spin_unlock_irqrestore(&np->lock, flags);
3811 }
3812
3813 nv_change_interrupt_mode(dev, tx_work + rx_work);
3814
3815 if (unlikely(np->events & NVREG_IRQ_LINK)) {
3816 spin_lock_irqsave(&np->lock, flags);
3817 nv_link_irq(dev);
3818 spin_unlock_irqrestore(&np->lock, flags);
3819 }
3820 if (unlikely(np->need_linktimer && time_after(jiffies, np->link_timeout))) {
3821 spin_lock_irqsave(&np->lock, flags);
3822 nv_linkchange(dev);
3823 spin_unlock_irqrestore(&np->lock, flags);
3824 np->link_timeout = jiffies + LINK_TIMEOUT;
3825 }
3826 if (unlikely(np->events & NVREG_IRQ_RECOVER_ERROR)) {
3827 spin_lock_irqsave(&np->lock, flags);
3828 if (!np->in_shutdown) {
3829 np->nic_poll_irq = np->irqmask;
3830 np->recover_error = 1;
3831 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3832 }
3833 spin_unlock_irqrestore(&np->lock, flags);
3834 napi_complete(napi);
3835 return rx_work;
3836 }
3837
3838 if (rx_work < budget) {
3839 /* re-enable interrupts
3840 (msix not enabled in napi) */
3841 napi_complete_done(napi, rx_work);
3842
3843 writel(np->irqmask, base + NvRegIrqMask);
3844 }
3845 return rx_work;
3846}
3847
3848static irqreturn_t nv_nic_irq_rx(int foo, void *data)
3849{
3850 struct net_device *dev = (struct net_device *) data;
3851 struct fe_priv *np = netdev_priv(dev);
3852 u8 __iomem *base = get_hwbase(dev);
3853 u32 events;
3854 int i;
3855 unsigned long flags;
3856
3857 for (i = 0;; i++) {
3858 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_RX_ALL;
3859 writel(events, base + NvRegMSIXIrqStatus);
3860 netdev_dbg(dev, "rx irq events: %08x\n", events);
3861 if (!(events & np->irqmask))
3862 break;
3863
3864 if (nv_rx_process_optimized(dev, RX_WORK_PER_LOOP)) {
3865 if (unlikely(nv_alloc_rx_optimized(dev))) {
3866 spin_lock_irqsave(&np->lock, flags);
3867 if (!np->in_shutdown)
3868 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3869 spin_unlock_irqrestore(&np->lock, flags);
3870 }
3871 }
3872
3873 if (unlikely(i > max_interrupt_work)) {
3874 spin_lock_irqsave(&np->lock, flags);
3875 /* disable interrupts on the nic */
3876 writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
3877 pci_push(base);
3878
3879 if (!np->in_shutdown) {
3880 np->nic_poll_irq |= NVREG_IRQ_RX_ALL;
3881 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3882 }
3883 spin_unlock_irqrestore(&np->lock, flags);
3884 netdev_dbg(dev, "%s: too many iterations (%d)\n",
3885 __func__, i);
3886 break;
3887 }
3888 }
3889
3890 return IRQ_RETVAL(i);
3891}
3892
3893static irqreturn_t nv_nic_irq_other(int foo, void *data)
3894{
3895 struct net_device *dev = (struct net_device *) data;
3896 struct fe_priv *np = netdev_priv(dev);
3897 u8 __iomem *base = get_hwbase(dev);
3898 u32 events;
3899 int i;
3900 unsigned long flags;
3901
3902 for (i = 0;; i++) {
3903 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_OTHER;
3904 writel(events, base + NvRegMSIXIrqStatus);
3905 netdev_dbg(dev, "irq events: %08x\n", events);
3906 if (!(events & np->irqmask))
3907 break;
3908
3909 /* check tx in case we reached max loop limit in tx isr */
3910 spin_lock_irqsave(&np->lock, flags);
3911 nv_tx_done_optimized(dev, TX_WORK_PER_LOOP);
3912 spin_unlock_irqrestore(&np->lock, flags);
3913
3914 if (events & NVREG_IRQ_LINK) {
3915 spin_lock_irqsave(&np->lock, flags);
3916 nv_link_irq(dev);
3917 spin_unlock_irqrestore(&np->lock, flags);
3918 }
3919 if (np->need_linktimer && time_after(jiffies, np->link_timeout)) {
3920 spin_lock_irqsave(&np->lock, flags);
3921 nv_linkchange(dev);
3922 spin_unlock_irqrestore(&np->lock, flags);
3923 np->link_timeout = jiffies + LINK_TIMEOUT;
3924 }
3925 if (events & NVREG_IRQ_RECOVER_ERROR) {
3926 spin_lock_irqsave(&np->lock, flags);
3927 /* disable interrupts on the nic */
3928 writel(NVREG_IRQ_OTHER, base + NvRegIrqMask);
3929 pci_push(base);
3930
3931 if (!np->in_shutdown) {
3932 np->nic_poll_irq |= NVREG_IRQ_OTHER;
3933 np->recover_error = 1;
3934 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3935 }
3936 spin_unlock_irqrestore(&np->lock, flags);
3937 break;
3938 }
3939 if (unlikely(i > max_interrupt_work)) {
3940 spin_lock_irqsave(&np->lock, flags);
3941 /* disable interrupts on the nic */
3942 writel(NVREG_IRQ_OTHER, base + NvRegIrqMask);
3943 pci_push(base);
3944
3945 if (!np->in_shutdown) {
3946 np->nic_poll_irq |= NVREG_IRQ_OTHER;
3947 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3948 }
3949 spin_unlock_irqrestore(&np->lock, flags);
3950 netdev_dbg(dev, "%s: too many iterations (%d)\n",
3951 __func__, i);
3952 break;
3953 }
3954
3955 }
3956
3957 return IRQ_RETVAL(i);
3958}
3959
3960static irqreturn_t nv_nic_irq_test(int foo, void *data)
3961{
3962 struct net_device *dev = (struct net_device *) data;
3963 struct fe_priv *np = netdev_priv(dev);
3964 u8 __iomem *base = get_hwbase(dev);
3965 u32 events;
3966
3967 if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
3968 events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
3969 writel(events & NVREG_IRQ_TIMER, base + NvRegIrqStatus);
3970 } else {
3971 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
3972 writel(events & NVREG_IRQ_TIMER, base + NvRegMSIXIrqStatus);
3973 }
3974 pci_push(base);
3975 if (!(events & NVREG_IRQ_TIMER))
3976 return IRQ_RETVAL(0);
3977
3978 nv_msi_workaround(np);
3979
3980 spin_lock(&np->lock);
3981 np->intr_test = 1;
3982 spin_unlock(&np->lock);
3983
3984 return IRQ_RETVAL(1);
3985}
3986
3987static void set_msix_vector_map(struct net_device *dev, u32 vector, u32 irqmask)
3988{
3989 u8 __iomem *base = get_hwbase(dev);
3990 int i;
3991 u32 msixmap = 0;
3992
3993 /* Each interrupt bit can be mapped to a MSIX vector (4 bits).
3994 * MSIXMap0 represents the first 8 interrupts and MSIXMap1 represents
3995 * the remaining 8 interrupts.
3996 */
3997 for (i = 0; i < 8; i++) {
3998 if ((irqmask >> i) & 0x1)
3999 msixmap |= vector << (i << 2);
4000 }
4001 writel(readl(base + NvRegMSIXMap0) | msixmap, base + NvRegMSIXMap0);
4002
4003 msixmap = 0;
4004 for (i = 0; i < 8; i++) {
4005 if ((irqmask >> (i + 8)) & 0x1)
4006 msixmap |= vector << (i << 2);
4007 }
4008 writel(readl(base + NvRegMSIXMap1) | msixmap, base + NvRegMSIXMap1);
4009}
4010
4011static int nv_request_irq(struct net_device *dev, int intr_test)
4012{
4013 struct fe_priv *np = get_nvpriv(dev);
4014 u8 __iomem *base = get_hwbase(dev);
4015 int ret;
4016 int i;
4017 irqreturn_t (*handler)(int foo, void *data);
4018
4019 if (intr_test) {
4020 handler = nv_nic_irq_test;
4021 } else {
4022 if (nv_optimized(np))
4023 handler = nv_nic_irq_optimized;
4024 else
4025 handler = nv_nic_irq;
4026 }
4027
4028 if (np->msi_flags & NV_MSI_X_CAPABLE) {
4029 for (i = 0; i < (np->msi_flags & NV_MSI_X_VECTORS_MASK); i++)
4030 np->msi_x_entry[i].entry = i;
4031 ret = pci_enable_msix_range(np->pci_dev,
4032 np->msi_x_entry,
4033 np->msi_flags & NV_MSI_X_VECTORS_MASK,
4034 np->msi_flags & NV_MSI_X_VECTORS_MASK);
4035 if (ret > 0) {
4036 np->msi_flags |= NV_MSI_X_ENABLED;
4037 if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT && !intr_test) {
4038 /* Request irq for rx handling */
4039 sprintf(np->name_rx, "%s-rx", dev->name);
4040 ret = request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector,
4041 nv_nic_irq_rx, IRQF_SHARED, np->name_rx, dev);
4042 if (ret) {
4043 netdev_info(dev,
4044 "request_irq failed for rx %d\n",
4045 ret);
4046 pci_disable_msix(np->pci_dev);
4047 np->msi_flags &= ~NV_MSI_X_ENABLED;
4048 goto out_err;
4049 }
4050 /* Request irq for tx handling */
4051 sprintf(np->name_tx, "%s-tx", dev->name);
4052 ret = request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector,
4053 nv_nic_irq_tx, IRQF_SHARED, np->name_tx, dev);
4054 if (ret) {
4055 netdev_info(dev,
4056 "request_irq failed for tx %d\n",
4057 ret);
4058 pci_disable_msix(np->pci_dev);
4059 np->msi_flags &= ~NV_MSI_X_ENABLED;
4060 goto out_free_rx;
4061 }
4062 /* Request irq for link and timer handling */
4063 sprintf(np->name_other, "%s-other", dev->name);
4064 ret = request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector,
4065 nv_nic_irq_other, IRQF_SHARED, np->name_other, dev);
4066 if (ret) {
4067 netdev_info(dev,
4068 "request_irq failed for link %d\n",
4069 ret);
4070 pci_disable_msix(np->pci_dev);
4071 np->msi_flags &= ~NV_MSI_X_ENABLED;
4072 goto out_free_tx;
4073 }
4074 /* map interrupts to their respective vector */
4075 writel(0, base + NvRegMSIXMap0);
4076 writel(0, base + NvRegMSIXMap1);
4077 set_msix_vector_map(dev, NV_MSI_X_VECTOR_RX, NVREG_IRQ_RX_ALL);
4078 set_msix_vector_map(dev, NV_MSI_X_VECTOR_TX, NVREG_IRQ_TX_ALL);
4079 set_msix_vector_map(dev, NV_MSI_X_VECTOR_OTHER, NVREG_IRQ_OTHER);
4080 } else {
4081 /* Request irq for all interrupts */
4082 ret = request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector,
4083 handler, IRQF_SHARED, dev->name, dev);
4084 if (ret) {
4085 netdev_info(dev,
4086 "request_irq failed %d\n",
4087 ret);
4088 pci_disable_msix(np->pci_dev);
4089 np->msi_flags &= ~NV_MSI_X_ENABLED;
4090 goto out_err;
4091 }
4092
4093 /* map interrupts to vector 0 */
4094 writel(0, base + NvRegMSIXMap0);
4095 writel(0, base + NvRegMSIXMap1);
4096 }
4097 netdev_info(dev, "MSI-X enabled\n");
4098 return 0;
4099 }
4100 }
4101 if (np->msi_flags & NV_MSI_CAPABLE) {
4102 ret = pci_enable_msi(np->pci_dev);
4103 if (ret == 0) {
4104 np->msi_flags |= NV_MSI_ENABLED;
4105 ret = request_irq(np->pci_dev->irq, handler, IRQF_SHARED, dev->name, dev);
4106 if (ret) {
4107 netdev_info(dev, "request_irq failed %d\n",
4108 ret);
4109 pci_disable_msi(np->pci_dev);
4110 np->msi_flags &= ~NV_MSI_ENABLED;
4111 goto out_err;
4112 }
4113
4114 /* map interrupts to vector 0 */
4115 writel(0, base + NvRegMSIMap0);
4116 writel(0, base + NvRegMSIMap1);
4117 /* enable msi vector 0 */
4118 writel(NVREG_MSI_VECTOR_0_ENABLED, base + NvRegMSIIrqMask);
4119 netdev_info(dev, "MSI enabled\n");
4120 return 0;
4121 }
4122 }
4123
4124 if (request_irq(np->pci_dev->irq, handler, IRQF_SHARED, dev->name, dev) != 0)
4125 goto out_err;
4126
4127 return 0;
4128out_free_tx:
4129 free_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector, dev);
4130out_free_rx:
4131 free_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector, dev);
4132out_err:
4133 return 1;
4134}
4135
4136static void nv_free_irq(struct net_device *dev)
4137{
4138 struct fe_priv *np = get_nvpriv(dev);
4139 int i;
4140
4141 if (np->msi_flags & NV_MSI_X_ENABLED) {
4142 for (i = 0; i < (np->msi_flags & NV_MSI_X_VECTORS_MASK); i++)
4143 free_irq(np->msi_x_entry[i].vector, dev);
4144 pci_disable_msix(np->pci_dev);
4145 np->msi_flags &= ~NV_MSI_X_ENABLED;
4146 } else {
4147 free_irq(np->pci_dev->irq, dev);
4148 if (np->msi_flags & NV_MSI_ENABLED) {
4149 pci_disable_msi(np->pci_dev);
4150 np->msi_flags &= ~NV_MSI_ENABLED;
4151 }
4152 }
4153}
4154
4155static void nv_do_nic_poll(struct timer_list *t)
4156{
4157 struct fe_priv *np = from_timer(np, t, nic_poll);
4158 struct net_device *dev = np->dev;
4159 u8 __iomem *base = get_hwbase(dev);
4160 u32 mask = 0;
4161 unsigned long flags;
4162 unsigned int irq = 0;
4163
4164 /*
4165 * First disable irq(s) and then
4166 * reenable interrupts on the nic, we have to do this before calling
4167 * nv_nic_irq because that may decide to do otherwise
4168 */
4169
4170 if (!using_multi_irqs(dev)) {
4171 if (np->msi_flags & NV_MSI_X_ENABLED)
4172 irq = np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector;
4173 else
4174 irq = np->pci_dev->irq;
4175 mask = np->irqmask;
4176 } else {
4177 if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
4178 irq = np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector;
4179 mask |= NVREG_IRQ_RX_ALL;
4180 }
4181 if (np->nic_poll_irq & NVREG_IRQ_TX_ALL) {
4182 irq = np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector;
4183 mask |= NVREG_IRQ_TX_ALL;
4184 }
4185 if (np->nic_poll_irq & NVREG_IRQ_OTHER) {
4186 irq = np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector;
4187 mask |= NVREG_IRQ_OTHER;
4188 }
4189 }
4190
4191 disable_irq_nosync_lockdep_irqsave(irq, &flags);
4192 synchronize_irq(irq);
4193
4194 if (np->recover_error) {
4195 np->recover_error = 0;
4196 netdev_info(dev, "MAC in recoverable error state\n");
4197 if (netif_running(dev)) {
4198 netif_tx_lock_bh(dev);
4199 netif_addr_lock(dev);
4200 spin_lock(&np->lock);
4201 /* stop engines */
4202 nv_stop_rxtx(dev);
4203 if (np->driver_data & DEV_HAS_POWER_CNTRL)
4204 nv_mac_reset(dev);
4205 nv_txrx_reset(dev);
4206 /* drain rx queue */
4207 nv_drain_rxtx(dev);
4208 /* reinit driver view of the rx queue */
4209 set_bufsize(dev);
4210 if (nv_init_ring(dev)) {
4211 if (!np->in_shutdown)
4212 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
4213 }
4214 /* reinit nic view of the rx queue */
4215 writel(np->rx_buf_sz, base + NvRegOffloadConfig);
4216 setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
4217 writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
4218 base + NvRegRingSizes);
4219 pci_push(base);
4220 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4221 pci_push(base);
4222 /* clear interrupts */
4223 if (!(np->msi_flags & NV_MSI_X_ENABLED))
4224 writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
4225 else
4226 writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
4227
4228 /* restart rx engine */
4229 nv_start_rxtx(dev);
4230 spin_unlock(&np->lock);
4231 netif_addr_unlock(dev);
4232 netif_tx_unlock_bh(dev);
4233 }
4234 }
4235
4236 writel(mask, base + NvRegIrqMask);
4237 pci_push(base);
4238
4239 if (!using_multi_irqs(dev)) {
4240 np->nic_poll_irq = 0;
4241 if (nv_optimized(np))
4242 nv_nic_irq_optimized(0, dev);
4243 else
4244 nv_nic_irq(0, dev);
4245 } else {
4246 if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
4247 np->nic_poll_irq &= ~NVREG_IRQ_RX_ALL;
4248 nv_nic_irq_rx(0, dev);
4249 }
4250 if (np->nic_poll_irq & NVREG_IRQ_TX_ALL) {
4251 np->nic_poll_irq &= ~NVREG_IRQ_TX_ALL;
4252 nv_nic_irq_tx(0, dev);
4253 }
4254 if (np->nic_poll_irq & NVREG_IRQ_OTHER) {
4255 np->nic_poll_irq &= ~NVREG_IRQ_OTHER;
4256 nv_nic_irq_other(0, dev);
4257 }
4258 }
4259
4260 enable_irq_lockdep_irqrestore(irq, &flags);
4261}
4262
4263#ifdef CONFIG_NET_POLL_CONTROLLER
4264static void nv_poll_controller(struct net_device *dev)
4265{
4266 struct fe_priv *np = netdev_priv(dev);
4267
4268 nv_do_nic_poll(&np->nic_poll);
4269}
4270#endif
4271
4272static void nv_do_stats_poll(struct timer_list *t)
4273 __acquires(&netdev_priv(dev)->hwstats_lock)
4274 __releases(&netdev_priv(dev)->hwstats_lock)
4275{
4276 struct fe_priv *np = from_timer(np, t, stats_poll);
4277 struct net_device *dev = np->dev;
4278
4279 /* If lock is currently taken, the stats are being refreshed
4280 * and hence fresh enough */
4281 if (spin_trylock(&np->hwstats_lock)) {
4282 nv_update_stats(dev);
4283 spin_unlock(&np->hwstats_lock);
4284 }
4285
4286 if (!np->in_shutdown)
4287 mod_timer(&np->stats_poll,
4288 round_jiffies(jiffies + STATS_INTERVAL));
4289}
4290
4291static void nv_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
4292{
4293 struct fe_priv *np = netdev_priv(dev);
4294 strscpy(info->driver, DRV_NAME, sizeof(info->driver));
4295 strscpy(info->version, FORCEDETH_VERSION, sizeof(info->version));
4296 strscpy(info->bus_info, pci_name(np->pci_dev), sizeof(info->bus_info));
4297}
4298
4299static void nv_get_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
4300{
4301 struct fe_priv *np = netdev_priv(dev);
4302 wolinfo->supported = WAKE_MAGIC;
4303
4304 spin_lock_irq(&np->lock);
4305 if (np->wolenabled)
4306 wolinfo->wolopts = WAKE_MAGIC;
4307 spin_unlock_irq(&np->lock);
4308}
4309
4310static int nv_set_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
4311{
4312 struct fe_priv *np = netdev_priv(dev);
4313 u8 __iomem *base = get_hwbase(dev);
4314 u32 flags = 0;
4315
4316 if (wolinfo->wolopts == 0) {
4317 np->wolenabled = 0;
4318 } else if (wolinfo->wolopts & WAKE_MAGIC) {
4319 np->wolenabled = 1;
4320 flags = NVREG_WAKEUPFLAGS_ENABLE;
4321 }
4322 if (netif_running(dev)) {
4323 spin_lock_irq(&np->lock);
4324 writel(flags, base + NvRegWakeUpFlags);
4325 spin_unlock_irq(&np->lock);
4326 }
4327 device_set_wakeup_enable(&np->pci_dev->dev, np->wolenabled);
4328 return 0;
4329}
4330
4331static int nv_get_link_ksettings(struct net_device *dev,
4332 struct ethtool_link_ksettings *cmd)
4333{
4334 struct fe_priv *np = netdev_priv(dev);
4335 u32 speed, supported, advertising;
4336 int adv;
4337
4338 spin_lock_irq(&np->lock);
4339 cmd->base.port = PORT_MII;
4340 if (!netif_running(dev)) {
4341 /* We do not track link speed / duplex setting if the
4342 * interface is disabled. Force a link check */
4343 if (nv_update_linkspeed(dev)) {
4344 netif_carrier_on(dev);
4345 } else {
4346 netif_carrier_off(dev);
4347 }
4348 }
4349
4350 if (netif_carrier_ok(dev)) {
4351 switch (np->linkspeed & (NVREG_LINKSPEED_MASK)) {
4352 case NVREG_LINKSPEED_10:
4353 speed = SPEED_10;
4354 break;
4355 case NVREG_LINKSPEED_100:
4356 speed = SPEED_100;
4357 break;
4358 case NVREG_LINKSPEED_1000:
4359 speed = SPEED_1000;
4360 break;
4361 default:
4362 speed = -1;
4363 break;
4364 }
4365 cmd->base.duplex = DUPLEX_HALF;
4366 if (np->duplex)
4367 cmd->base.duplex = DUPLEX_FULL;
4368 } else {
4369 speed = SPEED_UNKNOWN;
4370 cmd->base.duplex = DUPLEX_UNKNOWN;
4371 }
4372 cmd->base.speed = speed;
4373 cmd->base.autoneg = np->autoneg;
4374
4375 advertising = ADVERTISED_MII;
4376 if (np->autoneg) {
4377 advertising |= ADVERTISED_Autoneg;
4378 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4379 if (adv & ADVERTISE_10HALF)
4380 advertising |= ADVERTISED_10baseT_Half;
4381 if (adv & ADVERTISE_10FULL)
4382 advertising |= ADVERTISED_10baseT_Full;
4383 if (adv & ADVERTISE_100HALF)
4384 advertising |= ADVERTISED_100baseT_Half;
4385 if (adv & ADVERTISE_100FULL)
4386 advertising |= ADVERTISED_100baseT_Full;
4387 if (np->gigabit == PHY_GIGABIT) {
4388 adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
4389 if (adv & ADVERTISE_1000FULL)
4390 advertising |= ADVERTISED_1000baseT_Full;
4391 }
4392 }
4393 supported = (SUPPORTED_Autoneg |
4394 SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
4395 SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
4396 SUPPORTED_MII);
4397 if (np->gigabit == PHY_GIGABIT)
4398 supported |= SUPPORTED_1000baseT_Full;
4399
4400 cmd->base.phy_address = np->phyaddr;
4401
4402 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
4403 supported);
4404 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
4405 advertising);
4406
4407 /* ignore maxtxpkt, maxrxpkt for now */
4408 spin_unlock_irq(&np->lock);
4409 return 0;
4410}
4411
4412static int nv_set_link_ksettings(struct net_device *dev,
4413 const struct ethtool_link_ksettings *cmd)
4414{
4415 struct fe_priv *np = netdev_priv(dev);
4416 u32 speed = cmd->base.speed;
4417 u32 advertising;
4418
4419 ethtool_convert_link_mode_to_legacy_u32(&advertising,
4420 cmd->link_modes.advertising);
4421
4422 if (cmd->base.port != PORT_MII)
4423 return -EINVAL;
4424 if (cmd->base.phy_address != np->phyaddr) {
4425 /* TODO: support switching between multiple phys. Should be
4426 * trivial, but not enabled due to lack of test hardware. */
4427 return -EINVAL;
4428 }
4429 if (cmd->base.autoneg == AUTONEG_ENABLE) {
4430 u32 mask;
4431
4432 mask = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full |
4433 ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
4434 if (np->gigabit == PHY_GIGABIT)
4435 mask |= ADVERTISED_1000baseT_Full;
4436
4437 if ((advertising & mask) == 0)
4438 return -EINVAL;
4439
4440 } else if (cmd->base.autoneg == AUTONEG_DISABLE) {
4441 /* Note: autonegotiation disable, speed 1000 intentionally
4442 * forbidden - no one should need that. */
4443
4444 if (speed != SPEED_10 && speed != SPEED_100)
4445 return -EINVAL;
4446 if (cmd->base.duplex != DUPLEX_HALF &&
4447 cmd->base.duplex != DUPLEX_FULL)
4448 return -EINVAL;
4449 } else {
4450 return -EINVAL;
4451 }
4452
4453 netif_carrier_off(dev);
4454 if (netif_running(dev)) {
4455 unsigned long flags;
4456
4457 nv_disable_irq(dev);
4458 netif_tx_lock_bh(dev);
4459 netif_addr_lock(dev);
4460 /* with plain spinlock lockdep complains */
4461 spin_lock_irqsave(&np->lock, flags);
4462 /* stop engines */
4463 /* FIXME:
4464 * this can take some time, and interrupts are disabled
4465 * due to spin_lock_irqsave, but let's hope no daemon
4466 * is going to change the settings very often...
4467 * Worst case:
4468 * NV_RXSTOP_DELAY1MAX + NV_TXSTOP_DELAY1MAX
4469 * + some minor delays, which is up to a second approximately
4470 */
4471 nv_stop_rxtx(dev);
4472 spin_unlock_irqrestore(&np->lock, flags);
4473 netif_addr_unlock(dev);
4474 netif_tx_unlock_bh(dev);
4475 }
4476
4477 if (cmd->base.autoneg == AUTONEG_ENABLE) {
4478 int adv, bmcr;
4479
4480 np->autoneg = 1;
4481
4482 /* advertise only what has been requested */
4483 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4484 adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
4485 if (advertising & ADVERTISED_10baseT_Half)
4486 adv |= ADVERTISE_10HALF;
4487 if (advertising & ADVERTISED_10baseT_Full)
4488 adv |= ADVERTISE_10FULL;
4489 if (advertising & ADVERTISED_100baseT_Half)
4490 adv |= ADVERTISE_100HALF;
4491 if (advertising & ADVERTISED_100baseT_Full)
4492 adv |= ADVERTISE_100FULL;
4493 if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) /* for rx we set both advertisements but disable tx pause */
4494 adv |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
4495 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
4496 adv |= ADVERTISE_PAUSE_ASYM;
4497 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
4498
4499 if (np->gigabit == PHY_GIGABIT) {
4500 adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
4501 adv &= ~ADVERTISE_1000FULL;
4502 if (advertising & ADVERTISED_1000baseT_Full)
4503 adv |= ADVERTISE_1000FULL;
4504 mii_rw(dev, np->phyaddr, MII_CTRL1000, adv);
4505 }
4506
4507 if (netif_running(dev))
4508 netdev_info(dev, "link down\n");
4509 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4510 if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
4511 bmcr |= BMCR_ANENABLE;
4512 /* reset the phy in order for settings to stick,
4513 * and cause autoneg to start */
4514 if (phy_reset(dev, bmcr)) {
4515 netdev_info(dev, "phy reset failed\n");
4516 return -EINVAL;
4517 }
4518 } else {
4519 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
4520 mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4521 }
4522 } else {
4523 int adv, bmcr;
4524
4525 np->autoneg = 0;
4526
4527 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4528 adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
4529 if (speed == SPEED_10 && cmd->base.duplex == DUPLEX_HALF)
4530 adv |= ADVERTISE_10HALF;
4531 if (speed == SPEED_10 && cmd->base.duplex == DUPLEX_FULL)
4532 adv |= ADVERTISE_10FULL;
4533 if (speed == SPEED_100 && cmd->base.duplex == DUPLEX_HALF)
4534 adv |= ADVERTISE_100HALF;
4535 if (speed == SPEED_100 && cmd->base.duplex == DUPLEX_FULL)
4536 adv |= ADVERTISE_100FULL;
4537 np->pause_flags &= ~(NV_PAUSEFRAME_AUTONEG|NV_PAUSEFRAME_RX_ENABLE|NV_PAUSEFRAME_TX_ENABLE);
4538 if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) {/* for rx we set both advertisements but disable tx pause */
4539 adv |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
4540 np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
4541 }
4542 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ) {
4543 adv |= ADVERTISE_PAUSE_ASYM;
4544 np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
4545 }
4546 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
4547 np->fixed_mode = adv;
4548
4549 if (np->gigabit == PHY_GIGABIT) {
4550 adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
4551 adv &= ~ADVERTISE_1000FULL;
4552 mii_rw(dev, np->phyaddr, MII_CTRL1000, adv);
4553 }
4554
4555 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4556 bmcr &= ~(BMCR_ANENABLE|BMCR_SPEED100|BMCR_SPEED1000|BMCR_FULLDPLX);
4557 if (np->fixed_mode & (ADVERTISE_10FULL|ADVERTISE_100FULL))
4558 bmcr |= BMCR_FULLDPLX;
4559 if (np->fixed_mode & (ADVERTISE_100HALF|ADVERTISE_100FULL))
4560 bmcr |= BMCR_SPEED100;
4561 if (np->phy_oui == PHY_OUI_MARVELL) {
4562 /* reset the phy in order for forced mode settings to stick */
4563 if (phy_reset(dev, bmcr)) {
4564 netdev_info(dev, "phy reset failed\n");
4565 return -EINVAL;
4566 }
4567 } else {
4568 mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4569 if (netif_running(dev)) {
4570 /* Wait a bit and then reconfigure the nic. */
4571 udelay(10);
4572 nv_linkchange(dev);
4573 }
4574 }
4575 }
4576
4577 if (netif_running(dev)) {
4578 nv_start_rxtx(dev);
4579 nv_enable_irq(dev);
4580 }
4581
4582 return 0;
4583}
4584
4585#define FORCEDETH_REGS_VER 1
4586
4587static int nv_get_regs_len(struct net_device *dev)
4588{
4589 struct fe_priv *np = netdev_priv(dev);
4590 return np->register_size;
4591}
4592
4593static void nv_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *buf)
4594{
4595 struct fe_priv *np = netdev_priv(dev);
4596 u8 __iomem *base = get_hwbase(dev);
4597 u32 *rbuf = buf;
4598 int i;
4599
4600 regs->version = FORCEDETH_REGS_VER;
4601 spin_lock_irq(&np->lock);
4602 for (i = 0; i < np->register_size/sizeof(u32); i++)
4603 rbuf[i] = readl(base + i*sizeof(u32));
4604 spin_unlock_irq(&np->lock);
4605}
4606
4607static int nv_nway_reset(struct net_device *dev)
4608{
4609 struct fe_priv *np = netdev_priv(dev);
4610 int ret;
4611
4612 if (np->autoneg) {
4613 int bmcr;
4614
4615 netif_carrier_off(dev);
4616 if (netif_running(dev)) {
4617 nv_disable_irq(dev);
4618 netif_tx_lock_bh(dev);
4619 netif_addr_lock(dev);
4620 spin_lock(&np->lock);
4621 /* stop engines */
4622 nv_stop_rxtx(dev);
4623 spin_unlock(&np->lock);
4624 netif_addr_unlock(dev);
4625 netif_tx_unlock_bh(dev);
4626 netdev_info(dev, "link down\n");
4627 }
4628
4629 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4630 if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
4631 bmcr |= BMCR_ANENABLE;
4632 /* reset the phy in order for settings to stick*/
4633 if (phy_reset(dev, bmcr)) {
4634 netdev_info(dev, "phy reset failed\n");
4635 return -EINVAL;
4636 }
4637 } else {
4638 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
4639 mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4640 }
4641
4642 if (netif_running(dev)) {
4643 nv_start_rxtx(dev);
4644 nv_enable_irq(dev);
4645 }
4646 ret = 0;
4647 } else {
4648 ret = -EINVAL;
4649 }
4650
4651 return ret;
4652}
4653
4654static void nv_get_ringparam(struct net_device *dev,
4655 struct ethtool_ringparam *ring,
4656 struct kernel_ethtool_ringparam *kernel_ring,
4657 struct netlink_ext_ack *extack)
4658{
4659 struct fe_priv *np = netdev_priv(dev);
4660
4661 ring->rx_max_pending = (np->desc_ver == DESC_VER_1) ? RING_MAX_DESC_VER_1 : RING_MAX_DESC_VER_2_3;
4662 ring->tx_max_pending = (np->desc_ver == DESC_VER_1) ? RING_MAX_DESC_VER_1 : RING_MAX_DESC_VER_2_3;
4663
4664 ring->rx_pending = np->rx_ring_size;
4665 ring->tx_pending = np->tx_ring_size;
4666}
4667
4668static int nv_set_ringparam(struct net_device *dev,
4669 struct ethtool_ringparam *ring,
4670 struct kernel_ethtool_ringparam *kernel_ring,
4671 struct netlink_ext_ack *extack)
4672{
4673 struct fe_priv *np = netdev_priv(dev);
4674 u8 __iomem *base = get_hwbase(dev);
4675 u8 *rxtx_ring, *rx_skbuff, *tx_skbuff;
4676 dma_addr_t ring_addr;
4677
4678 if (ring->rx_pending < RX_RING_MIN ||
4679 ring->tx_pending < TX_RING_MIN ||
4680 ring->rx_mini_pending != 0 ||
4681 ring->rx_jumbo_pending != 0 ||
4682 (np->desc_ver == DESC_VER_1 &&
4683 (ring->rx_pending > RING_MAX_DESC_VER_1 ||
4684 ring->tx_pending > RING_MAX_DESC_VER_1)) ||
4685 (np->desc_ver != DESC_VER_1 &&
4686 (ring->rx_pending > RING_MAX_DESC_VER_2_3 ||
4687 ring->tx_pending > RING_MAX_DESC_VER_2_3))) {
4688 return -EINVAL;
4689 }
4690
4691 /* allocate new rings */
4692 if (!nv_optimized(np)) {
4693 rxtx_ring = dma_alloc_coherent(&np->pci_dev->dev,
4694 sizeof(struct ring_desc) *
4695 (ring->rx_pending +
4696 ring->tx_pending),
4697 &ring_addr, GFP_ATOMIC);
4698 } else {
4699 rxtx_ring = dma_alloc_coherent(&np->pci_dev->dev,
4700 sizeof(struct ring_desc_ex) *
4701 (ring->rx_pending +
4702 ring->tx_pending),
4703 &ring_addr, GFP_ATOMIC);
4704 }
4705 rx_skbuff = kmalloc_array(ring->rx_pending, sizeof(struct nv_skb_map),
4706 GFP_KERNEL);
4707 tx_skbuff = kmalloc_array(ring->tx_pending, sizeof(struct nv_skb_map),
4708 GFP_KERNEL);
4709 if (!rxtx_ring || !rx_skbuff || !tx_skbuff) {
4710 /* fall back to old rings */
4711 if (!nv_optimized(np)) {
4712 if (rxtx_ring)
4713 dma_free_coherent(&np->pci_dev->dev,
4714 sizeof(struct ring_desc) *
4715 (ring->rx_pending +
4716 ring->tx_pending),
4717 rxtx_ring, ring_addr);
4718 } else {
4719 if (rxtx_ring)
4720 dma_free_coherent(&np->pci_dev->dev,
4721 sizeof(struct ring_desc_ex) *
4722 (ring->rx_pending +
4723 ring->tx_pending),
4724 rxtx_ring, ring_addr);
4725 }
4726
4727 kfree(rx_skbuff);
4728 kfree(tx_skbuff);
4729 goto exit;
4730 }
4731
4732 if (netif_running(dev)) {
4733 nv_disable_irq(dev);
4734 nv_napi_disable(dev);
4735 netif_tx_lock_bh(dev);
4736 netif_addr_lock(dev);
4737 spin_lock(&np->lock);
4738 /* stop engines */
4739 nv_stop_rxtx(dev);
4740 nv_txrx_reset(dev);
4741 /* drain queues */
4742 nv_drain_rxtx(dev);
4743 /* delete queues */
4744 free_rings(dev);
4745 }
4746
4747 /* set new values */
4748 np->rx_ring_size = ring->rx_pending;
4749 np->tx_ring_size = ring->tx_pending;
4750
4751 if (!nv_optimized(np)) {
4752 np->rx_ring.orig = (struct ring_desc *)rxtx_ring;
4753 np->tx_ring.orig = &np->rx_ring.orig[np->rx_ring_size];
4754 } else {
4755 np->rx_ring.ex = (struct ring_desc_ex *)rxtx_ring;
4756 np->tx_ring.ex = &np->rx_ring.ex[np->rx_ring_size];
4757 }
4758 np->rx_skb = (struct nv_skb_map *)rx_skbuff;
4759 np->tx_skb = (struct nv_skb_map *)tx_skbuff;
4760 np->ring_addr = ring_addr;
4761
4762 memset(np->rx_skb, 0, sizeof(struct nv_skb_map) * np->rx_ring_size);
4763 memset(np->tx_skb, 0, sizeof(struct nv_skb_map) * np->tx_ring_size);
4764
4765 if (netif_running(dev)) {
4766 /* reinit driver view of the queues */
4767 set_bufsize(dev);
4768 if (nv_init_ring(dev)) {
4769 if (!np->in_shutdown)
4770 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
4771 }
4772
4773 /* reinit nic view of the queues */
4774 writel(np->rx_buf_sz, base + NvRegOffloadConfig);
4775 setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
4776 writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
4777 base + NvRegRingSizes);
4778 pci_push(base);
4779 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4780 pci_push(base);
4781
4782 /* restart engines */
4783 nv_start_rxtx(dev);
4784 spin_unlock(&np->lock);
4785 netif_addr_unlock(dev);
4786 netif_tx_unlock_bh(dev);
4787 nv_napi_enable(dev);
4788 nv_enable_irq(dev);
4789 }
4790 return 0;
4791exit:
4792 return -ENOMEM;
4793}
4794
4795static void nv_get_pauseparam(struct net_device *dev, struct ethtool_pauseparam* pause)
4796{
4797 struct fe_priv *np = netdev_priv(dev);
4798
4799 pause->autoneg = (np->pause_flags & NV_PAUSEFRAME_AUTONEG) != 0;
4800 pause->rx_pause = (np->pause_flags & NV_PAUSEFRAME_RX_ENABLE) != 0;
4801 pause->tx_pause = (np->pause_flags & NV_PAUSEFRAME_TX_ENABLE) != 0;
4802}
4803
4804static int nv_set_pauseparam(struct net_device *dev, struct ethtool_pauseparam* pause)
4805{
4806 struct fe_priv *np = netdev_priv(dev);
4807 int adv, bmcr;
4808
4809 if ((!np->autoneg && np->duplex == 0) ||
4810 (np->autoneg && !pause->autoneg && np->duplex == 0)) {
4811 netdev_info(dev, "can not set pause settings when forced link is in half duplex\n");
4812 return -EINVAL;
4813 }
4814 if (pause->tx_pause && !(np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE)) {
4815 netdev_info(dev, "hardware does not support tx pause frames\n");
4816 return -EINVAL;
4817 }
4818
4819 netif_carrier_off(dev);
4820 if (netif_running(dev)) {
4821 nv_disable_irq(dev);
4822 netif_tx_lock_bh(dev);
4823 netif_addr_lock(dev);
4824 spin_lock(&np->lock);
4825 /* stop engines */
4826 nv_stop_rxtx(dev);
4827 spin_unlock(&np->lock);
4828 netif_addr_unlock(dev);
4829 netif_tx_unlock_bh(dev);
4830 }
4831
4832 np->pause_flags &= ~(NV_PAUSEFRAME_RX_REQ|NV_PAUSEFRAME_TX_REQ);
4833 if (pause->rx_pause)
4834 np->pause_flags |= NV_PAUSEFRAME_RX_REQ;
4835 if (pause->tx_pause)
4836 np->pause_flags |= NV_PAUSEFRAME_TX_REQ;
4837
4838 if (np->autoneg && pause->autoneg) {
4839 np->pause_flags |= NV_PAUSEFRAME_AUTONEG;
4840
4841 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4842 adv &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
4843 if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) /* for rx we set both advertisements but disable tx pause */
4844 adv |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
4845 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
4846 adv |= ADVERTISE_PAUSE_ASYM;
4847 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
4848
4849 if (netif_running(dev))
4850 netdev_info(dev, "link down\n");
4851 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4852 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
4853 mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4854 } else {
4855 np->pause_flags &= ~(NV_PAUSEFRAME_AUTONEG|NV_PAUSEFRAME_RX_ENABLE|NV_PAUSEFRAME_TX_ENABLE);
4856 if (pause->rx_pause)
4857 np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
4858 if (pause->tx_pause)
4859 np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
4860
4861 if (!netif_running(dev))
4862 nv_update_linkspeed(dev);
4863 else
4864 nv_update_pause(dev, np->pause_flags);
4865 }
4866
4867 if (netif_running(dev)) {
4868 nv_start_rxtx(dev);
4869 nv_enable_irq(dev);
4870 }
4871 return 0;
4872}
4873
4874static int nv_set_loopback(struct net_device *dev, netdev_features_t features)
4875{
4876 struct fe_priv *np = netdev_priv(dev);
4877 unsigned long flags;
4878 u32 miicontrol;
4879 int err, retval = 0;
4880
4881 spin_lock_irqsave(&np->lock, flags);
4882 miicontrol = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4883 if (features & NETIF_F_LOOPBACK) {
4884 if (miicontrol & BMCR_LOOPBACK) {
4885 spin_unlock_irqrestore(&np->lock, flags);
4886 netdev_info(dev, "Loopback already enabled\n");
4887 return 0;
4888 }
4889 nv_disable_irq(dev);
4890 /* Turn on loopback mode */
4891 miicontrol |= BMCR_LOOPBACK | BMCR_FULLDPLX | BMCR_SPEED1000;
4892 err = mii_rw(dev, np->phyaddr, MII_BMCR, miicontrol);
4893 if (err) {
4894 retval = PHY_ERROR;
4895 spin_unlock_irqrestore(&np->lock, flags);
4896 phy_init(dev);
4897 } else {
4898 if (netif_running(dev)) {
4899 /* Force 1000 Mbps full-duplex */
4900 nv_force_linkspeed(dev, NVREG_LINKSPEED_1000,
4901 1);
4902 /* Force link up */
4903 netif_carrier_on(dev);
4904 }
4905 spin_unlock_irqrestore(&np->lock, flags);
4906 netdev_info(dev,
4907 "Internal PHY loopback mode enabled.\n");
4908 }
4909 } else {
4910 if (!(miicontrol & BMCR_LOOPBACK)) {
4911 spin_unlock_irqrestore(&np->lock, flags);
4912 netdev_info(dev, "Loopback already disabled\n");
4913 return 0;
4914 }
4915 nv_disable_irq(dev);
4916 /* Turn off loopback */
4917 spin_unlock_irqrestore(&np->lock, flags);
4918 netdev_info(dev, "Internal PHY loopback mode disabled.\n");
4919 phy_init(dev);
4920 }
4921 msleep(500);
4922 spin_lock_irqsave(&np->lock, flags);
4923 nv_enable_irq(dev);
4924 spin_unlock_irqrestore(&np->lock, flags);
4925
4926 return retval;
4927}
4928
4929static netdev_features_t nv_fix_features(struct net_device *dev,
4930 netdev_features_t features)
4931{
4932 /* vlan is dependent on rx checksum offload */
4933 if (features & (NETIF_F_HW_VLAN_CTAG_TX|NETIF_F_HW_VLAN_CTAG_RX))
4934 features |= NETIF_F_RXCSUM;
4935
4936 return features;
4937}
4938
4939static void nv_vlan_mode(struct net_device *dev, netdev_features_t features)
4940{
4941 struct fe_priv *np = get_nvpriv(dev);
4942
4943 spin_lock_irq(&np->lock);
4944
4945 if (features & NETIF_F_HW_VLAN_CTAG_RX)
4946 np->txrxctl_bits |= NVREG_TXRXCTL_VLANSTRIP;
4947 else
4948 np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANSTRIP;
4949
4950 if (features & NETIF_F_HW_VLAN_CTAG_TX)
4951 np->txrxctl_bits |= NVREG_TXRXCTL_VLANINS;
4952 else
4953 np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANINS;
4954
4955 writel(np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4956
4957 spin_unlock_irq(&np->lock);
4958}
4959
4960static int nv_set_features(struct net_device *dev, netdev_features_t features)
4961{
4962 struct fe_priv *np = netdev_priv(dev);
4963 u8 __iomem *base = get_hwbase(dev);
4964 netdev_features_t changed = dev->features ^ features;
4965 int retval;
4966
4967 if ((changed & NETIF_F_LOOPBACK) && netif_running(dev)) {
4968 retval = nv_set_loopback(dev, features);
4969 if (retval != 0)
4970 return retval;
4971 }
4972
4973 if (changed & NETIF_F_RXCSUM) {
4974 spin_lock_irq(&np->lock);
4975
4976 if (features & NETIF_F_RXCSUM)
4977 np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
4978 else
4979 np->txrxctl_bits &= ~NVREG_TXRXCTL_RXCHECK;
4980
4981 if (netif_running(dev))
4982 writel(np->txrxctl_bits, base + NvRegTxRxControl);
4983
4984 spin_unlock_irq(&np->lock);
4985 }
4986
4987 if (changed & (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX))
4988 nv_vlan_mode(dev, features);
4989
4990 return 0;
4991}
4992
4993static int nv_get_sset_count(struct net_device *dev, int sset)
4994{
4995 struct fe_priv *np = netdev_priv(dev);
4996
4997 switch (sset) {
4998 case ETH_SS_TEST:
4999 if (np->driver_data & DEV_HAS_TEST_EXTENDED)
5000 return NV_TEST_COUNT_EXTENDED;
5001 else
5002 return NV_TEST_COUNT_BASE;
5003 case ETH_SS_STATS:
5004 if (np->driver_data & DEV_HAS_STATISTICS_V3)
5005 return NV_DEV_STATISTICS_V3_COUNT;
5006 else if (np->driver_data & DEV_HAS_STATISTICS_V2)
5007 return NV_DEV_STATISTICS_V2_COUNT;
5008 else if (np->driver_data & DEV_HAS_STATISTICS_V1)
5009 return NV_DEV_STATISTICS_V1_COUNT;
5010 else
5011 return 0;
5012 default:
5013 return -EOPNOTSUPP;
5014 }
5015}
5016
5017static void nv_get_ethtool_stats(struct net_device *dev,
5018 struct ethtool_stats *estats, u64 *buffer)
5019 __acquires(&netdev_priv(dev)->hwstats_lock)
5020 __releases(&netdev_priv(dev)->hwstats_lock)
5021{
5022 struct fe_priv *np = netdev_priv(dev);
5023
5024 spin_lock_bh(&np->hwstats_lock);
5025 nv_update_stats(dev);
5026 memcpy(buffer, &np->estats,
5027 nv_get_sset_count(dev, ETH_SS_STATS)*sizeof(u64));
5028 spin_unlock_bh(&np->hwstats_lock);
5029}
5030
5031static int nv_link_test(struct net_device *dev)
5032{
5033 struct fe_priv *np = netdev_priv(dev);
5034 int mii_status;
5035
5036 mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
5037 mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
5038
5039 /* check phy link status */
5040 if (!(mii_status & BMSR_LSTATUS))
5041 return 0;
5042 else
5043 return 1;
5044}
5045
5046static int nv_register_test(struct net_device *dev)
5047{
5048 u8 __iomem *base = get_hwbase(dev);
5049 int i = 0;
5050 u32 orig_read, new_read;
5051
5052 do {
5053 orig_read = readl(base + nv_registers_test[i].reg);
5054
5055 /* xor with mask to toggle bits */
5056 orig_read ^= nv_registers_test[i].mask;
5057
5058 writel(orig_read, base + nv_registers_test[i].reg);
5059
5060 new_read = readl(base + nv_registers_test[i].reg);
5061
5062 if ((new_read & nv_registers_test[i].mask) != (orig_read & nv_registers_test[i].mask))
5063 return 0;
5064
5065 /* restore original value */
5066 orig_read ^= nv_registers_test[i].mask;
5067 writel(orig_read, base + nv_registers_test[i].reg);
5068
5069 } while (nv_registers_test[++i].reg != 0);
5070
5071 return 1;
5072}
5073
5074static int nv_interrupt_test(struct net_device *dev)
5075{
5076 struct fe_priv *np = netdev_priv(dev);
5077 u8 __iomem *base = get_hwbase(dev);
5078 int ret = 1;
5079 int testcnt;
5080 u32 save_msi_flags, save_poll_interval = 0;
5081
5082 if (netif_running(dev)) {
5083 /* free current irq */
5084 nv_free_irq(dev);
5085 save_poll_interval = readl(base+NvRegPollingInterval);
5086 }
5087
5088 /* flag to test interrupt handler */
5089 np->intr_test = 0;
5090
5091 /* setup test irq */
5092 save_msi_flags = np->msi_flags;
5093 np->msi_flags &= ~NV_MSI_X_VECTORS_MASK;
5094 np->msi_flags |= 0x001; /* setup 1 vector */
5095 if (nv_request_irq(dev, 1))
5096 return 0;
5097
5098 /* setup timer interrupt */
5099 writel(NVREG_POLL_DEFAULT_CPU, base + NvRegPollingInterval);
5100 writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
5101
5102 nv_enable_hw_interrupts(dev, NVREG_IRQ_TIMER);
5103
5104 /* wait for at least one interrupt */
5105 msleep(100);
5106
5107 spin_lock_irq(&np->lock);
5108
5109 /* flag should be set within ISR */
5110 testcnt = np->intr_test;
5111 if (!testcnt)
5112 ret = 2;
5113
5114 nv_disable_hw_interrupts(dev, NVREG_IRQ_TIMER);
5115 if (!(np->msi_flags & NV_MSI_X_ENABLED))
5116 writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
5117 else
5118 writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
5119
5120 spin_unlock_irq(&np->lock);
5121
5122 nv_free_irq(dev);
5123
5124 np->msi_flags = save_msi_flags;
5125
5126 if (netif_running(dev)) {
5127 writel(save_poll_interval, base + NvRegPollingInterval);
5128 writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
5129 /* restore original irq */
5130 if (nv_request_irq(dev, 0))
5131 return 0;
5132 }
5133
5134 return ret;
5135}
5136
5137static int nv_loopback_test(struct net_device *dev)
5138{
5139 struct fe_priv *np = netdev_priv(dev);
5140 u8 __iomem *base = get_hwbase(dev);
5141 struct sk_buff *tx_skb, *rx_skb;
5142 dma_addr_t test_dma_addr;
5143 u32 tx_flags_extra = (np->desc_ver == DESC_VER_1 ? NV_TX_LASTPACKET : NV_TX2_LASTPACKET);
5144 u32 flags;
5145 int len, i, pkt_len;
5146 u8 *pkt_data;
5147 u32 filter_flags = 0;
5148 u32 misc1_flags = 0;
5149 int ret = 1;
5150
5151 if (netif_running(dev)) {
5152 nv_disable_irq(dev);
5153 filter_flags = readl(base + NvRegPacketFilterFlags);
5154 misc1_flags = readl(base + NvRegMisc1);
5155 } else {
5156 nv_txrx_reset(dev);
5157 }
5158
5159 /* reinit driver view of the rx queue */
5160 set_bufsize(dev);
5161 nv_init_ring(dev);
5162
5163 /* setup hardware for loopback */
5164 writel(NVREG_MISC1_FORCE, base + NvRegMisc1);
5165 writel(NVREG_PFF_ALWAYS | NVREG_PFF_LOOPBACK, base + NvRegPacketFilterFlags);
5166
5167 /* reinit nic view of the rx queue */
5168 writel(np->rx_buf_sz, base + NvRegOffloadConfig);
5169 setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
5170 writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
5171 base + NvRegRingSizes);
5172 pci_push(base);
5173
5174 /* restart rx engine */
5175 nv_start_rxtx(dev);
5176
5177 /* setup packet for tx */
5178 pkt_len = ETH_DATA_LEN;
5179 tx_skb = netdev_alloc_skb(dev, pkt_len);
5180 if (!tx_skb) {
5181 ret = 0;
5182 goto out;
5183 }
5184 test_dma_addr = dma_map_single(&np->pci_dev->dev, tx_skb->data,
5185 skb_tailroom(tx_skb),
5186 DMA_FROM_DEVICE);
5187 if (unlikely(dma_mapping_error(&np->pci_dev->dev,
5188 test_dma_addr))) {
5189 dev_kfree_skb_any(tx_skb);
5190 goto out;
5191 }
5192 pkt_data = skb_put(tx_skb, pkt_len);
5193 for (i = 0; i < pkt_len; i++)
5194 pkt_data[i] = (u8)(i & 0xff);
5195
5196 if (!nv_optimized(np)) {
5197 np->tx_ring.orig[0].buf = cpu_to_le32(test_dma_addr);
5198 np->tx_ring.orig[0].flaglen = cpu_to_le32((pkt_len-1) | np->tx_flags | tx_flags_extra);
5199 } else {
5200 np->tx_ring.ex[0].bufhigh = cpu_to_le32(dma_high(test_dma_addr));
5201 np->tx_ring.ex[0].buflow = cpu_to_le32(dma_low(test_dma_addr));
5202 np->tx_ring.ex[0].flaglen = cpu_to_le32((pkt_len-1) | np->tx_flags | tx_flags_extra);
5203 }
5204 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
5205 pci_push(get_hwbase(dev));
5206
5207 msleep(500);
5208
5209 /* check for rx of the packet */
5210 if (!nv_optimized(np)) {
5211 flags = le32_to_cpu(np->rx_ring.orig[0].flaglen);
5212 len = nv_descr_getlength(&np->rx_ring.orig[0], np->desc_ver);
5213
5214 } else {
5215 flags = le32_to_cpu(np->rx_ring.ex[0].flaglen);
5216 len = nv_descr_getlength_ex(&np->rx_ring.ex[0], np->desc_ver);
5217 }
5218
5219 if (flags & NV_RX_AVAIL) {
5220 ret = 0;
5221 } else if (np->desc_ver == DESC_VER_1) {
5222 if (flags & NV_RX_ERROR)
5223 ret = 0;
5224 } else {
5225 if (flags & NV_RX2_ERROR)
5226 ret = 0;
5227 }
5228
5229 if (ret) {
5230 if (len != pkt_len) {
5231 ret = 0;
5232 } else {
5233 rx_skb = np->rx_skb[0].skb;
5234 for (i = 0; i < pkt_len; i++) {
5235 if (rx_skb->data[i] != (u8)(i & 0xff)) {
5236 ret = 0;
5237 break;
5238 }
5239 }
5240 }
5241 }
5242
5243 dma_unmap_single(&np->pci_dev->dev, test_dma_addr,
5244 (skb_end_pointer(tx_skb) - tx_skb->data),
5245 DMA_TO_DEVICE);
5246 dev_kfree_skb_any(tx_skb);
5247 out:
5248 /* stop engines */
5249 nv_stop_rxtx(dev);
5250 nv_txrx_reset(dev);
5251 /* drain rx queue */
5252 nv_drain_rxtx(dev);
5253
5254 if (netif_running(dev)) {
5255 writel(misc1_flags, base + NvRegMisc1);
5256 writel(filter_flags, base + NvRegPacketFilterFlags);
5257 nv_enable_irq(dev);
5258 }
5259
5260 return ret;
5261}
5262
5263static void nv_self_test(struct net_device *dev, struct ethtool_test *test, u64 *buffer)
5264{
5265 struct fe_priv *np = netdev_priv(dev);
5266 u8 __iomem *base = get_hwbase(dev);
5267 int result, count;
5268
5269 count = nv_get_sset_count(dev, ETH_SS_TEST);
5270 memset(buffer, 0, count * sizeof(u64));
5271
5272 if (!nv_link_test(dev)) {
5273 test->flags |= ETH_TEST_FL_FAILED;
5274 buffer[0] = 1;
5275 }
5276
5277 if (test->flags & ETH_TEST_FL_OFFLINE) {
5278 if (netif_running(dev)) {
5279 netif_stop_queue(dev);
5280 nv_napi_disable(dev);
5281 netif_tx_lock_bh(dev);
5282 netif_addr_lock(dev);
5283 spin_lock_irq(&np->lock);
5284 nv_disable_hw_interrupts(dev, np->irqmask);
5285 if (!(np->msi_flags & NV_MSI_X_ENABLED))
5286 writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
5287 else
5288 writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
5289 /* stop engines */
5290 nv_stop_rxtx(dev);
5291 nv_txrx_reset(dev);
5292 /* drain rx queue */
5293 nv_drain_rxtx(dev);
5294 spin_unlock_irq(&np->lock);
5295 netif_addr_unlock(dev);
5296 netif_tx_unlock_bh(dev);
5297 }
5298
5299 if (!nv_register_test(dev)) {
5300 test->flags |= ETH_TEST_FL_FAILED;
5301 buffer[1] = 1;
5302 }
5303
5304 result = nv_interrupt_test(dev);
5305 if (result != 1) {
5306 test->flags |= ETH_TEST_FL_FAILED;
5307 buffer[2] = 1;
5308 }
5309 if (result == 0) {
5310 /* bail out */
5311 return;
5312 }
5313
5314 if (count > NV_TEST_COUNT_BASE && !nv_loopback_test(dev)) {
5315 test->flags |= ETH_TEST_FL_FAILED;
5316 buffer[3] = 1;
5317 }
5318
5319 if (netif_running(dev)) {
5320 /* reinit driver view of the rx queue */
5321 set_bufsize(dev);
5322 if (nv_init_ring(dev)) {
5323 if (!np->in_shutdown)
5324 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
5325 }
5326 /* reinit nic view of the rx queue */
5327 writel(np->rx_buf_sz, base + NvRegOffloadConfig);
5328 setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
5329 writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
5330 base + NvRegRingSizes);
5331 pci_push(base);
5332 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
5333 pci_push(base);
5334 /* restart rx engine */
5335 nv_start_rxtx(dev);
5336 netif_start_queue(dev);
5337 nv_napi_enable(dev);
5338 nv_enable_hw_interrupts(dev, np->irqmask);
5339 }
5340 }
5341}
5342
5343static void nv_get_strings(struct net_device *dev, u32 stringset, u8 *buffer)
5344{
5345 switch (stringset) {
5346 case ETH_SS_STATS:
5347 memcpy(buffer, &nv_estats_str, nv_get_sset_count(dev, ETH_SS_STATS)*sizeof(struct nv_ethtool_str));
5348 break;
5349 case ETH_SS_TEST:
5350 memcpy(buffer, &nv_etests_str, nv_get_sset_count(dev, ETH_SS_TEST)*sizeof(struct nv_ethtool_str));
5351 break;
5352 }
5353}
5354
5355static const struct ethtool_ops ops = {
5356 .get_drvinfo = nv_get_drvinfo,
5357 .get_link = ethtool_op_get_link,
5358 .get_wol = nv_get_wol,
5359 .set_wol = nv_set_wol,
5360 .get_regs_len = nv_get_regs_len,
5361 .get_regs = nv_get_regs,
5362 .nway_reset = nv_nway_reset,
5363 .get_ringparam = nv_get_ringparam,
5364 .set_ringparam = nv_set_ringparam,
5365 .get_pauseparam = nv_get_pauseparam,
5366 .set_pauseparam = nv_set_pauseparam,
5367 .get_strings = nv_get_strings,
5368 .get_ethtool_stats = nv_get_ethtool_stats,
5369 .get_sset_count = nv_get_sset_count,
5370 .self_test = nv_self_test,
5371 .get_ts_info = ethtool_op_get_ts_info,
5372 .get_link_ksettings = nv_get_link_ksettings,
5373 .set_link_ksettings = nv_set_link_ksettings,
5374};
5375
5376/* The mgmt unit and driver use a semaphore to access the phy during init */
5377static int nv_mgmt_acquire_sema(struct net_device *dev)
5378{
5379 struct fe_priv *np = netdev_priv(dev);
5380 u8 __iomem *base = get_hwbase(dev);
5381 int i;
5382 u32 tx_ctrl, mgmt_sema;
5383
5384 for (i = 0; i < 10; i++) {
5385 mgmt_sema = readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_MGMT_SEMA_MASK;
5386 if (mgmt_sema == NVREG_XMITCTL_MGMT_SEMA_FREE)
5387 break;
5388 msleep(500);
5389 }
5390
5391 if (mgmt_sema != NVREG_XMITCTL_MGMT_SEMA_FREE)
5392 return 0;
5393
5394 for (i = 0; i < 2; i++) {
5395 tx_ctrl = readl(base + NvRegTransmitterControl);
5396 tx_ctrl |= NVREG_XMITCTL_HOST_SEMA_ACQ;
5397 writel(tx_ctrl, base + NvRegTransmitterControl);
5398
5399 /* verify that semaphore was acquired */
5400 tx_ctrl = readl(base + NvRegTransmitterControl);
5401 if (((tx_ctrl & NVREG_XMITCTL_HOST_SEMA_MASK) == NVREG_XMITCTL_HOST_SEMA_ACQ) &&
5402 ((tx_ctrl & NVREG_XMITCTL_MGMT_SEMA_MASK) == NVREG_XMITCTL_MGMT_SEMA_FREE)) {
5403 np->mgmt_sema = 1;
5404 return 1;
5405 } else
5406 udelay(50);
5407 }
5408
5409 return 0;
5410}
5411
5412static void nv_mgmt_release_sema(struct net_device *dev)
5413{
5414 struct fe_priv *np = netdev_priv(dev);
5415 u8 __iomem *base = get_hwbase(dev);
5416 u32 tx_ctrl;
5417
5418 if (np->driver_data & DEV_HAS_MGMT_UNIT) {
5419 if (np->mgmt_sema) {
5420 tx_ctrl = readl(base + NvRegTransmitterControl);
5421 tx_ctrl &= ~NVREG_XMITCTL_HOST_SEMA_ACQ;
5422 writel(tx_ctrl, base + NvRegTransmitterControl);
5423 }
5424 }
5425}
5426
5427
5428static int nv_mgmt_get_version(struct net_device *dev)
5429{
5430 struct fe_priv *np = netdev_priv(dev);
5431 u8 __iomem *base = get_hwbase(dev);
5432 u32 data_ready = readl(base + NvRegTransmitterControl);
5433 u32 data_ready2 = 0;
5434 unsigned long start;
5435 int ready = 0;
5436
5437 writel(NVREG_MGMTUNITGETVERSION, base + NvRegMgmtUnitGetVersion);
5438 writel(data_ready ^ NVREG_XMITCTL_DATA_START, base + NvRegTransmitterControl);
5439 start = jiffies;
5440 while (time_before(jiffies, start + 5*HZ)) {
5441 data_ready2 = readl(base + NvRegTransmitterControl);
5442 if ((data_ready & NVREG_XMITCTL_DATA_READY) != (data_ready2 & NVREG_XMITCTL_DATA_READY)) {
5443 ready = 1;
5444 break;
5445 }
5446 schedule_timeout_uninterruptible(1);
5447 }
5448
5449 if (!ready || (data_ready2 & NVREG_XMITCTL_DATA_ERROR))
5450 return 0;
5451
5452 np->mgmt_version = readl(base + NvRegMgmtUnitVersion) & NVREG_MGMTUNITVERSION;
5453
5454 return 1;
5455}
5456
5457static int nv_open(struct net_device *dev)
5458{
5459 struct fe_priv *np = netdev_priv(dev);
5460 u8 __iomem *base = get_hwbase(dev);
5461 int ret = 1;
5462 int oom, i;
5463 u32 low;
5464
5465 /* power up phy */
5466 mii_rw(dev, np->phyaddr, MII_BMCR,
5467 mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ) & ~BMCR_PDOWN);
5468
5469 nv_txrx_gate(dev, false);
5470 /* erase previous misconfiguration */
5471 if (np->driver_data & DEV_HAS_POWER_CNTRL)
5472 nv_mac_reset(dev);
5473 writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA);
5474 writel(0, base + NvRegMulticastAddrB);
5475 writel(NVREG_MCASTMASKA_NONE, base + NvRegMulticastMaskA);
5476 writel(NVREG_MCASTMASKB_NONE, base + NvRegMulticastMaskB);
5477 writel(0, base + NvRegPacketFilterFlags);
5478
5479 writel(0, base + NvRegTransmitterControl);
5480 writel(0, base + NvRegReceiverControl);
5481
5482 writel(0, base + NvRegAdapterControl);
5483
5484 if (np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE)
5485 writel(NVREG_TX_PAUSEFRAME_DISABLE, base + NvRegTxPauseFrame);
5486
5487 /* initialize descriptor rings */
5488 set_bufsize(dev);
5489 oom = nv_init_ring(dev);
5490
5491 writel(0, base + NvRegLinkSpeed);
5492 writel(readl(base + NvRegTransmitPoll) & NVREG_TRANSMITPOLL_MAC_ADDR_REV, base + NvRegTransmitPoll);
5493 nv_txrx_reset(dev);
5494 writel(0, base + NvRegUnknownSetupReg6);
5495
5496 np->in_shutdown = 0;
5497
5498 /* give hw rings */
5499 setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
5500 writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
5501 base + NvRegRingSizes);
5502
5503 writel(np->linkspeed, base + NvRegLinkSpeed);
5504 if (np->desc_ver == DESC_VER_1)
5505 writel(NVREG_TX_WM_DESC1_DEFAULT, base + NvRegTxWatermark);
5506 else
5507 writel(NVREG_TX_WM_DESC2_3_DEFAULT, base + NvRegTxWatermark);
5508 writel(np->txrxctl_bits, base + NvRegTxRxControl);
5509 writel(np->vlanctl_bits, base + NvRegVlanControl);
5510 pci_push(base);
5511 writel(NVREG_TXRXCTL_BIT1|np->txrxctl_bits, base + NvRegTxRxControl);
5512 if (reg_delay(dev, NvRegUnknownSetupReg5,
5513 NVREG_UNKSETUP5_BIT31, NVREG_UNKSETUP5_BIT31,
5514 NV_SETUP5_DELAY, NV_SETUP5_DELAYMAX))
5515 netdev_info(dev,
5516 "%s: SetupReg5, Bit 31 remained off\n", __func__);
5517
5518 writel(0, base + NvRegMIIMask);
5519 writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
5520 writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5521
5522 writel(NVREG_MISC1_FORCE | NVREG_MISC1_HD, base + NvRegMisc1);
5523 writel(readl(base + NvRegTransmitterStatus), base + NvRegTransmitterStatus);
5524 writel(NVREG_PFF_ALWAYS, base + NvRegPacketFilterFlags);
5525 writel(np->rx_buf_sz, base + NvRegOffloadConfig);
5526
5527 writel(readl(base + NvRegReceiverStatus), base + NvRegReceiverStatus);
5528
5529 get_random_bytes(&low, sizeof(low));
5530 low &= NVREG_SLOTTIME_MASK;
5531 if (np->desc_ver == DESC_VER_1) {
5532 writel(low|NVREG_SLOTTIME_DEFAULT, base + NvRegSlotTime);
5533 } else {
5534 if (!(np->driver_data & DEV_HAS_GEAR_MODE)) {
5535 /* setup legacy backoff */
5536 writel(NVREG_SLOTTIME_LEGBF_ENABLED|NVREG_SLOTTIME_10_100_FULL|low, base + NvRegSlotTime);
5537 } else {
5538 writel(NVREG_SLOTTIME_10_100_FULL, base + NvRegSlotTime);
5539 nv_gear_backoff_reseed(dev);
5540 }
5541 }
5542 writel(NVREG_TX_DEFERRAL_DEFAULT, base + NvRegTxDeferral);
5543 writel(NVREG_RX_DEFERRAL_DEFAULT, base + NvRegRxDeferral);
5544 if (poll_interval == -1) {
5545 if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT)
5546 writel(NVREG_POLL_DEFAULT_THROUGHPUT, base + NvRegPollingInterval);
5547 else
5548 writel(NVREG_POLL_DEFAULT_CPU, base + NvRegPollingInterval);
5549 } else
5550 writel(poll_interval & 0xFFFF, base + NvRegPollingInterval);
5551 writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
5552 writel((np->phyaddr << NVREG_ADAPTCTL_PHYSHIFT)|NVREG_ADAPTCTL_PHYVALID|NVREG_ADAPTCTL_RUNNING,
5553 base + NvRegAdapterControl);
5554 writel(NVREG_MIISPEED_BIT8|NVREG_MIIDELAY, base + NvRegMIISpeed);
5555 writel(NVREG_MII_LINKCHANGE, base + NvRegMIIMask);
5556 if (np->wolenabled)
5557 writel(NVREG_WAKEUPFLAGS_ENABLE , base + NvRegWakeUpFlags);
5558
5559 i = readl(base + NvRegPowerState);
5560 if ((i & NVREG_POWERSTATE_POWEREDUP) == 0)
5561 writel(NVREG_POWERSTATE_POWEREDUP|i, base + NvRegPowerState);
5562
5563 pci_push(base);
5564 udelay(10);
5565 writel(readl(base + NvRegPowerState) | NVREG_POWERSTATE_VALID, base + NvRegPowerState);
5566
5567 nv_disable_hw_interrupts(dev, np->irqmask);
5568 pci_push(base);
5569 writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5570 writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
5571 pci_push(base);
5572
5573 if (nv_request_irq(dev, 0))
5574 goto out_drain;
5575
5576 /* ask for interrupts */
5577 nv_enable_hw_interrupts(dev, np->irqmask);
5578
5579 spin_lock_irq(&np->lock);
5580 writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA);
5581 writel(0, base + NvRegMulticastAddrB);
5582 writel(NVREG_MCASTMASKA_NONE, base + NvRegMulticastMaskA);
5583 writel(NVREG_MCASTMASKB_NONE, base + NvRegMulticastMaskB);
5584 writel(NVREG_PFF_ALWAYS|NVREG_PFF_MYADDR, base + NvRegPacketFilterFlags);
5585 /* One manual link speed update: Interrupts are enabled, future link
5586 * speed changes cause interrupts and are handled by nv_link_irq().
5587 */
5588 readl(base + NvRegMIIStatus);
5589 writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5590
5591 /* set linkspeed to invalid value, thus force nv_update_linkspeed
5592 * to init hw */
5593 np->linkspeed = 0;
5594 ret = nv_update_linkspeed(dev);
5595 nv_start_rxtx(dev);
5596 netif_start_queue(dev);
5597 nv_napi_enable(dev);
5598
5599 if (ret) {
5600 netif_carrier_on(dev);
5601 } else {
5602 netdev_info(dev, "no link during initialization\n");
5603 netif_carrier_off(dev);
5604 }
5605 if (oom)
5606 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
5607
5608 /* start statistics timer */
5609 if (np->driver_data & (DEV_HAS_STATISTICS_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_STATISTICS_V3))
5610 mod_timer(&np->stats_poll,
5611 round_jiffies(jiffies + STATS_INTERVAL));
5612
5613 spin_unlock_irq(&np->lock);
5614
5615 /* If the loopback feature was set while the device was down, make sure
5616 * that it's set correctly now.
5617 */
5618 if (dev->features & NETIF_F_LOOPBACK)
5619 nv_set_loopback(dev, dev->features);
5620
5621 return 0;
5622out_drain:
5623 nv_drain_rxtx(dev);
5624 return ret;
5625}
5626
5627static int nv_close(struct net_device *dev)
5628{
5629 struct fe_priv *np = netdev_priv(dev);
5630 u8 __iomem *base;
5631
5632 spin_lock_irq(&np->lock);
5633 np->in_shutdown = 1;
5634 spin_unlock_irq(&np->lock);
5635 nv_napi_disable(dev);
5636 synchronize_irq(np->pci_dev->irq);
5637
5638 del_timer_sync(&np->oom_kick);
5639 del_timer_sync(&np->nic_poll);
5640 del_timer_sync(&np->stats_poll);
5641
5642 netif_stop_queue(dev);
5643 spin_lock_irq(&np->lock);
5644 nv_update_pause(dev, 0); /* otherwise stop_tx bricks NIC */
5645 nv_stop_rxtx(dev);
5646 nv_txrx_reset(dev);
5647
5648 /* disable interrupts on the nic or we will lock up */
5649 base = get_hwbase(dev);
5650 nv_disable_hw_interrupts(dev, np->irqmask);
5651 pci_push(base);
5652
5653 spin_unlock_irq(&np->lock);
5654
5655 nv_free_irq(dev);
5656
5657 nv_drain_rxtx(dev);
5658
5659 if (np->wolenabled || !phy_power_down) {
5660 nv_txrx_gate(dev, false);
5661 writel(NVREG_PFF_ALWAYS|NVREG_PFF_MYADDR, base + NvRegPacketFilterFlags);
5662 nv_start_rx(dev);
5663 } else {
5664 /* power down phy */
5665 mii_rw(dev, np->phyaddr, MII_BMCR,
5666 mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ)|BMCR_PDOWN);
5667 nv_txrx_gate(dev, true);
5668 }
5669
5670 /* FIXME: power down nic */
5671
5672 return 0;
5673}
5674
5675static const struct net_device_ops nv_netdev_ops = {
5676 .ndo_open = nv_open,
5677 .ndo_stop = nv_close,
5678 .ndo_get_stats64 = nv_get_stats64,
5679 .ndo_start_xmit = nv_start_xmit,
5680 .ndo_tx_timeout = nv_tx_timeout,
5681 .ndo_change_mtu = nv_change_mtu,
5682 .ndo_fix_features = nv_fix_features,
5683 .ndo_set_features = nv_set_features,
5684 .ndo_validate_addr = eth_validate_addr,
5685 .ndo_set_mac_address = nv_set_mac_address,
5686 .ndo_set_rx_mode = nv_set_multicast,
5687#ifdef CONFIG_NET_POLL_CONTROLLER
5688 .ndo_poll_controller = nv_poll_controller,
5689#endif
5690};
5691
5692static const struct net_device_ops nv_netdev_ops_optimized = {
5693 .ndo_open = nv_open,
5694 .ndo_stop = nv_close,
5695 .ndo_get_stats64 = nv_get_stats64,
5696 .ndo_start_xmit = nv_start_xmit_optimized,
5697 .ndo_tx_timeout = nv_tx_timeout,
5698 .ndo_change_mtu = nv_change_mtu,
5699 .ndo_fix_features = nv_fix_features,
5700 .ndo_set_features = nv_set_features,
5701 .ndo_validate_addr = eth_validate_addr,
5702 .ndo_set_mac_address = nv_set_mac_address,
5703 .ndo_set_rx_mode = nv_set_multicast,
5704#ifdef CONFIG_NET_POLL_CONTROLLER
5705 .ndo_poll_controller = nv_poll_controller,
5706#endif
5707};
5708
5709static int nv_probe(struct pci_dev *pci_dev, const struct pci_device_id *id)
5710{
5711 struct net_device *dev;
5712 struct fe_priv *np;
5713 unsigned long addr;
5714 u8 __iomem *base;
5715 int err, i;
5716 u32 powerstate, txreg;
5717 u32 phystate_orig = 0, phystate;
5718 int phyinitialized = 0;
5719 static int printed_version;
5720 u8 mac[ETH_ALEN];
5721
5722 if (!printed_version++)
5723 pr_info("Reverse Engineered nForce ethernet driver. Version %s.\n",
5724 FORCEDETH_VERSION);
5725
5726 dev = alloc_etherdev(sizeof(struct fe_priv));
5727 err = -ENOMEM;
5728 if (!dev)
5729 goto out;
5730
5731 np = netdev_priv(dev);
5732 np->dev = dev;
5733 np->pci_dev = pci_dev;
5734 spin_lock_init(&np->lock);
5735 spin_lock_init(&np->hwstats_lock);
5736 SET_NETDEV_DEV(dev, &pci_dev->dev);
5737 u64_stats_init(&np->swstats_rx_syncp);
5738 u64_stats_init(&np->swstats_tx_syncp);
5739 np->txrx_stats = alloc_percpu(struct nv_txrx_stats);
5740 if (!np->txrx_stats) {
5741 pr_err("np->txrx_stats, alloc memory error.\n");
5742 err = -ENOMEM;
5743 goto out_alloc_percpu;
5744 }
5745
5746 timer_setup(&np->oom_kick, nv_do_rx_refill, 0);
5747 timer_setup(&np->nic_poll, nv_do_nic_poll, 0);
5748 timer_setup(&np->stats_poll, nv_do_stats_poll, TIMER_DEFERRABLE);
5749
5750 err = pci_enable_device(pci_dev);
5751 if (err)
5752 goto out_free;
5753
5754 pci_set_master(pci_dev);
5755
5756 err = pci_request_regions(pci_dev, DRV_NAME);
5757 if (err < 0)
5758 goto out_disable;
5759
5760 if (id->driver_data & (DEV_HAS_VLAN|DEV_HAS_MSI_X|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V2|DEV_HAS_STATISTICS_V3))
5761 np->register_size = NV_PCI_REGSZ_VER3;
5762 else if (id->driver_data & DEV_HAS_STATISTICS_V1)
5763 np->register_size = NV_PCI_REGSZ_VER2;
5764 else
5765 np->register_size = NV_PCI_REGSZ_VER1;
5766
5767 err = -EINVAL;
5768 addr = 0;
5769 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
5770 if (pci_resource_flags(pci_dev, i) & IORESOURCE_MEM &&
5771 pci_resource_len(pci_dev, i) >= np->register_size) {
5772 addr = pci_resource_start(pci_dev, i);
5773 break;
5774 }
5775 }
5776 if (i == DEVICE_COUNT_RESOURCE) {
5777 dev_info(&pci_dev->dev, "Couldn't find register window\n");
5778 goto out_relreg;
5779 }
5780
5781 /* copy of driver data */
5782 np->driver_data = id->driver_data;
5783 /* copy of device id */
5784 np->device_id = id->device;
5785
5786 /* handle different descriptor versions */
5787 if (id->driver_data & DEV_HAS_HIGH_DMA) {
5788 /* packet format 3: supports 40-bit addressing */
5789 np->desc_ver = DESC_VER_3;
5790 np->txrxctl_bits = NVREG_TXRXCTL_DESC_3;
5791 if (dma_64bit) {
5792 if (dma_set_mask_and_coherent(&pci_dev->dev, DMA_BIT_MASK(39)))
5793 dev_info(&pci_dev->dev,
5794 "64-bit DMA failed, using 32-bit addressing\n");
5795 else
5796 dev->features |= NETIF_F_HIGHDMA;
5797 }
5798 } else if (id->driver_data & DEV_HAS_LARGEDESC) {
5799 /* packet format 2: supports jumbo frames */
5800 np->desc_ver = DESC_VER_2;
5801 np->txrxctl_bits = NVREG_TXRXCTL_DESC_2;
5802 } else {
5803 /* original packet format */
5804 np->desc_ver = DESC_VER_1;
5805 np->txrxctl_bits = NVREG_TXRXCTL_DESC_1;
5806 }
5807
5808 np->pkt_limit = NV_PKTLIMIT_1;
5809 if (id->driver_data & DEV_HAS_LARGEDESC)
5810 np->pkt_limit = NV_PKTLIMIT_2;
5811
5812 if (id->driver_data & DEV_HAS_CHECKSUM) {
5813 np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
5814 dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_SG |
5815 NETIF_F_TSO | NETIF_F_RXCSUM;
5816 }
5817
5818 np->vlanctl_bits = 0;
5819 if (id->driver_data & DEV_HAS_VLAN) {
5820 np->vlanctl_bits = NVREG_VLANCONTROL_ENABLE;
5821 dev->hw_features |= NETIF_F_HW_VLAN_CTAG_RX |
5822 NETIF_F_HW_VLAN_CTAG_TX;
5823 }
5824
5825 dev->features |= dev->hw_features;
5826
5827 /* Add loopback capability to the device. */
5828 dev->hw_features |= NETIF_F_LOOPBACK;
5829
5830 /* MTU range: 64 - 1500 or 9100 */
5831 dev->min_mtu = ETH_ZLEN + ETH_FCS_LEN;
5832 dev->max_mtu = np->pkt_limit;
5833
5834 np->pause_flags = NV_PAUSEFRAME_RX_CAPABLE | NV_PAUSEFRAME_RX_REQ | NV_PAUSEFRAME_AUTONEG;
5835 if ((id->driver_data & DEV_HAS_PAUSEFRAME_TX_V1) ||
5836 (id->driver_data & DEV_HAS_PAUSEFRAME_TX_V2) ||
5837 (id->driver_data & DEV_HAS_PAUSEFRAME_TX_V3)) {
5838 np->pause_flags |= NV_PAUSEFRAME_TX_CAPABLE | NV_PAUSEFRAME_TX_REQ;
5839 }
5840
5841 err = -ENOMEM;
5842 np->base = ioremap(addr, np->register_size);
5843 if (!np->base)
5844 goto out_relreg;
5845
5846 np->rx_ring_size = RX_RING_DEFAULT;
5847 np->tx_ring_size = TX_RING_DEFAULT;
5848
5849 if (!nv_optimized(np)) {
5850 np->rx_ring.orig = dma_alloc_coherent(&pci_dev->dev,
5851 sizeof(struct ring_desc) *
5852 (np->rx_ring_size +
5853 np->tx_ring_size),
5854 &np->ring_addr,
5855 GFP_KERNEL);
5856 if (!np->rx_ring.orig)
5857 goto out_unmap;
5858 np->tx_ring.orig = &np->rx_ring.orig[np->rx_ring_size];
5859 } else {
5860 np->rx_ring.ex = dma_alloc_coherent(&pci_dev->dev,
5861 sizeof(struct ring_desc_ex) *
5862 (np->rx_ring_size +
5863 np->tx_ring_size),
5864 &np->ring_addr, GFP_KERNEL);
5865 if (!np->rx_ring.ex)
5866 goto out_unmap;
5867 np->tx_ring.ex = &np->rx_ring.ex[np->rx_ring_size];
5868 }
5869 np->rx_skb = kcalloc(np->rx_ring_size, sizeof(struct nv_skb_map), GFP_KERNEL);
5870 np->tx_skb = kcalloc(np->tx_ring_size, sizeof(struct nv_skb_map), GFP_KERNEL);
5871 if (!np->rx_skb || !np->tx_skb)
5872 goto out_freering;
5873
5874 if (!nv_optimized(np))
5875 dev->netdev_ops = &nv_netdev_ops;
5876 else
5877 dev->netdev_ops = &nv_netdev_ops_optimized;
5878
5879 netif_napi_add(dev, &np->napi, nv_napi_poll);
5880 dev->ethtool_ops = &ops;
5881 dev->watchdog_timeo = NV_WATCHDOG_TIMEO;
5882
5883 pci_set_drvdata(pci_dev, dev);
5884
5885 /* read the mac address */
5886 base = get_hwbase(dev);
5887 np->orig_mac[0] = readl(base + NvRegMacAddrA);
5888 np->orig_mac[1] = readl(base + NvRegMacAddrB);
5889
5890 /* check the workaround bit for correct mac address order */
5891 txreg = readl(base + NvRegTransmitPoll);
5892 if (id->driver_data & DEV_HAS_CORRECT_MACADDR) {
5893 /* mac address is already in correct order */
5894 mac[0] = (np->orig_mac[0] >> 0) & 0xff;
5895 mac[1] = (np->orig_mac[0] >> 8) & 0xff;
5896 mac[2] = (np->orig_mac[0] >> 16) & 0xff;
5897 mac[3] = (np->orig_mac[0] >> 24) & 0xff;
5898 mac[4] = (np->orig_mac[1] >> 0) & 0xff;
5899 mac[5] = (np->orig_mac[1] >> 8) & 0xff;
5900 } else if (txreg & NVREG_TRANSMITPOLL_MAC_ADDR_REV) {
5901 /* mac address is already in correct order */
5902 mac[0] = (np->orig_mac[0] >> 0) & 0xff;
5903 mac[1] = (np->orig_mac[0] >> 8) & 0xff;
5904 mac[2] = (np->orig_mac[0] >> 16) & 0xff;
5905 mac[3] = (np->orig_mac[0] >> 24) & 0xff;
5906 mac[4] = (np->orig_mac[1] >> 0) & 0xff;
5907 mac[5] = (np->orig_mac[1] >> 8) & 0xff;
5908 /*
5909 * Set orig mac address back to the reversed version.
5910 * This flag will be cleared during low power transition.
5911 * Therefore, we should always put back the reversed address.
5912 */
5913 np->orig_mac[0] = (mac[5] << 0) + (mac[4] << 8) +
5914 (mac[3] << 16) + (mac[2] << 24);
5915 np->orig_mac[1] = (mac[1] << 0) + (mac[0] << 8);
5916 } else {
5917 /* need to reverse mac address to correct order */
5918 mac[0] = (np->orig_mac[1] >> 8) & 0xff;
5919 mac[1] = (np->orig_mac[1] >> 0) & 0xff;
5920 mac[2] = (np->orig_mac[0] >> 24) & 0xff;
5921 mac[3] = (np->orig_mac[0] >> 16) & 0xff;
5922 mac[4] = (np->orig_mac[0] >> 8) & 0xff;
5923 mac[5] = (np->orig_mac[0] >> 0) & 0xff;
5924 writel(txreg|NVREG_TRANSMITPOLL_MAC_ADDR_REV, base + NvRegTransmitPoll);
5925 dev_dbg(&pci_dev->dev,
5926 "%s: set workaround bit for reversed mac addr\n",
5927 __func__);
5928 }
5929
5930 if (is_valid_ether_addr(mac)) {
5931 eth_hw_addr_set(dev, mac);
5932 } else {
5933 /*
5934 * Bad mac address. At least one bios sets the mac address
5935 * to 01:23:45:67:89:ab
5936 */
5937 dev_err(&pci_dev->dev,
5938 "Invalid MAC address detected: %pM - Please complain to your hardware vendor.\n",
5939 mac);
5940 eth_hw_addr_random(dev);
5941 dev_err(&pci_dev->dev,
5942 "Using random MAC address: %pM\n", dev->dev_addr);
5943 }
5944
5945 /* set mac address */
5946 nv_copy_mac_to_hw(dev);
5947
5948 /* disable WOL */
5949 writel(0, base + NvRegWakeUpFlags);
5950 np->wolenabled = 0;
5951 device_set_wakeup_enable(&pci_dev->dev, false);
5952
5953 if (id->driver_data & DEV_HAS_POWER_CNTRL) {
5954
5955 /* take phy and nic out of low power mode */
5956 powerstate = readl(base + NvRegPowerState2);
5957 powerstate &= ~NVREG_POWERSTATE2_POWERUP_MASK;
5958 if ((id->driver_data & DEV_NEED_LOW_POWER_FIX) &&
5959 pci_dev->revision >= 0xA3)
5960 powerstate |= NVREG_POWERSTATE2_POWERUP_REV_A3;
5961 writel(powerstate, base + NvRegPowerState2);
5962 }
5963
5964 if (np->desc_ver == DESC_VER_1)
5965 np->tx_flags = NV_TX_VALID;
5966 else
5967 np->tx_flags = NV_TX2_VALID;
5968
5969 np->msi_flags = 0;
5970 if ((id->driver_data & DEV_HAS_MSI) && msi)
5971 np->msi_flags |= NV_MSI_CAPABLE;
5972
5973 if ((id->driver_data & DEV_HAS_MSI_X) && msix) {
5974 /* msix has had reported issues when modifying irqmask
5975 as in the case of napi, therefore, disable for now
5976 */
5977#if 0
5978 np->msi_flags |= NV_MSI_X_CAPABLE;
5979#endif
5980 }
5981
5982 if (optimization_mode == NV_OPTIMIZATION_MODE_CPU) {
5983 np->irqmask = NVREG_IRQMASK_CPU;
5984 if (np->msi_flags & NV_MSI_X_CAPABLE) /* set number of vectors */
5985 np->msi_flags |= 0x0001;
5986 } else if (optimization_mode == NV_OPTIMIZATION_MODE_DYNAMIC &&
5987 !(id->driver_data & DEV_NEED_TIMERIRQ)) {
5988 /* start off in throughput mode */
5989 np->irqmask = NVREG_IRQMASK_THROUGHPUT;
5990 /* remove support for msix mode */
5991 np->msi_flags &= ~NV_MSI_X_CAPABLE;
5992 } else {
5993 optimization_mode = NV_OPTIMIZATION_MODE_THROUGHPUT;
5994 np->irqmask = NVREG_IRQMASK_THROUGHPUT;
5995 if (np->msi_flags & NV_MSI_X_CAPABLE) /* set number of vectors */
5996 np->msi_flags |= 0x0003;
5997 }
5998
5999 if (id->driver_data & DEV_NEED_TIMERIRQ)
6000 np->irqmask |= NVREG_IRQ_TIMER;
6001 if (id->driver_data & DEV_NEED_LINKTIMER) {
6002 np->need_linktimer = 1;
6003 np->link_timeout = jiffies + LINK_TIMEOUT;
6004 } else {
6005 np->need_linktimer = 0;
6006 }
6007
6008 /* Limit the number of tx's outstanding for hw bug */
6009 if (id->driver_data & DEV_NEED_TX_LIMIT) {
6010 np->tx_limit = 1;
6011 if (((id->driver_data & DEV_NEED_TX_LIMIT2) == DEV_NEED_TX_LIMIT2) &&
6012 pci_dev->revision >= 0xA2)
6013 np->tx_limit = 0;
6014 }
6015
6016 /* clear phy state and temporarily halt phy interrupts */
6017 writel(0, base + NvRegMIIMask);
6018 phystate = readl(base + NvRegAdapterControl);
6019 if (phystate & NVREG_ADAPTCTL_RUNNING) {
6020 phystate_orig = 1;
6021 phystate &= ~NVREG_ADAPTCTL_RUNNING;
6022 writel(phystate, base + NvRegAdapterControl);
6023 }
6024 writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
6025
6026 if (id->driver_data & DEV_HAS_MGMT_UNIT) {
6027 /* management unit running on the mac? */
6028 if ((readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_MGMT_ST) &&
6029 (readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_SYNC_PHY_INIT) &&
6030 nv_mgmt_acquire_sema(dev) &&
6031 nv_mgmt_get_version(dev)) {
6032 np->mac_in_use = 1;
6033 if (np->mgmt_version > 0)
6034 np->mac_in_use = readl(base + NvRegMgmtUnitControl) & NVREG_MGMTUNITCONTROL_INUSE;
6035 /* management unit setup the phy already? */
6036 if (np->mac_in_use &&
6037 ((readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_SYNC_MASK) ==
6038 NVREG_XMITCTL_SYNC_PHY_INIT)) {
6039 /* phy is inited by mgmt unit */
6040 phyinitialized = 1;
6041 } else {
6042 /* we need to init the phy */
6043 }
6044 }
6045 }
6046
6047 /* find a suitable phy */
6048 for (i = 1; i <= 32; i++) {
6049 int id1, id2;
6050 int phyaddr = i & 0x1F;
6051
6052 spin_lock_irq(&np->lock);
6053 id1 = mii_rw(dev, phyaddr, MII_PHYSID1, MII_READ);
6054 spin_unlock_irq(&np->lock);
6055 if (id1 < 0 || id1 == 0xffff)
6056 continue;
6057 spin_lock_irq(&np->lock);
6058 id2 = mii_rw(dev, phyaddr, MII_PHYSID2, MII_READ);
6059 spin_unlock_irq(&np->lock);
6060 if (id2 < 0 || id2 == 0xffff)
6061 continue;
6062
6063 np->phy_model = id2 & PHYID2_MODEL_MASK;
6064 id1 = (id1 & PHYID1_OUI_MASK) << PHYID1_OUI_SHFT;
6065 id2 = (id2 & PHYID2_OUI_MASK) >> PHYID2_OUI_SHFT;
6066 np->phyaddr = phyaddr;
6067 np->phy_oui = id1 | id2;
6068
6069 /* Realtek hardcoded phy id1 to all zero's on certain phys */
6070 if (np->phy_oui == PHY_OUI_REALTEK2)
6071 np->phy_oui = PHY_OUI_REALTEK;
6072 /* Setup phy revision for Realtek */
6073 if (np->phy_oui == PHY_OUI_REALTEK && np->phy_model == PHY_MODEL_REALTEK_8211)
6074 np->phy_rev = mii_rw(dev, phyaddr, MII_RESV1, MII_READ) & PHY_REV_MASK;
6075
6076 break;
6077 }
6078 if (i == 33) {
6079 dev_info(&pci_dev->dev, "open: Could not find a valid PHY\n");
6080 goto out_error;
6081 }
6082
6083 if (!phyinitialized) {
6084 /* reset it */
6085 phy_init(dev);
6086 } else {
6087 /* see if it is a gigabit phy */
6088 u32 mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
6089 if (mii_status & PHY_GIGABIT)
6090 np->gigabit = PHY_GIGABIT;
6091 }
6092
6093 /* set default link speed settings */
6094 np->linkspeed = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
6095 np->duplex = 0;
6096 np->autoneg = 1;
6097
6098 err = register_netdev(dev);
6099 if (err) {
6100 dev_info(&pci_dev->dev, "unable to register netdev: %d\n", err);
6101 goto out_error;
6102 }
6103
6104 netif_carrier_off(dev);
6105
6106 /* Some NICs freeze when TX pause is enabled while NIC is
6107 * down, and this stays across warm reboots. The sequence
6108 * below should be enough to recover from that state.
6109 */
6110 nv_update_pause(dev, 0);
6111 nv_start_tx(dev);
6112 nv_stop_tx(dev);
6113
6114 if (id->driver_data & DEV_HAS_VLAN)
6115 nv_vlan_mode(dev, dev->features);
6116
6117 dev_info(&pci_dev->dev, "ifname %s, PHY OUI 0x%x @ %d, addr %pM\n",
6118 dev->name, np->phy_oui, np->phyaddr, dev->dev_addr);
6119
6120 dev_info(&pci_dev->dev, "%s%s%s%s%s%s%s%s%s%s%sdesc-v%u\n",
6121 dev->features & NETIF_F_HIGHDMA ? "highdma " : "",
6122 dev->features & (NETIF_F_IP_CSUM | NETIF_F_SG) ?
6123 "csum " : "",
6124 dev->features & (NETIF_F_HW_VLAN_CTAG_RX |
6125 NETIF_F_HW_VLAN_CTAG_TX) ?
6126 "vlan " : "",
6127 dev->features & (NETIF_F_LOOPBACK) ?
6128 "loopback " : "",
6129 id->driver_data & DEV_HAS_POWER_CNTRL ? "pwrctl " : "",
6130 id->driver_data & DEV_HAS_MGMT_UNIT ? "mgmt " : "",
6131 id->driver_data & DEV_NEED_TIMERIRQ ? "timirq " : "",
6132 np->gigabit == PHY_GIGABIT ? "gbit " : "",
6133 np->need_linktimer ? "lnktim " : "",
6134 np->msi_flags & NV_MSI_CAPABLE ? "msi " : "",
6135 np->msi_flags & NV_MSI_X_CAPABLE ? "msi-x " : "",
6136 np->desc_ver);
6137
6138 return 0;
6139
6140out_error:
6141 nv_mgmt_release_sema(dev);
6142 if (phystate_orig)
6143 writel(phystate|NVREG_ADAPTCTL_RUNNING, base + NvRegAdapterControl);
6144out_freering:
6145 free_rings(dev);
6146out_unmap:
6147 iounmap(get_hwbase(dev));
6148out_relreg:
6149 pci_release_regions(pci_dev);
6150out_disable:
6151 pci_disable_device(pci_dev);
6152out_free:
6153 free_percpu(np->txrx_stats);
6154out_alloc_percpu:
6155 free_netdev(dev);
6156out:
6157 return err;
6158}
6159
6160static void nv_restore_phy(struct net_device *dev)
6161{
6162 struct fe_priv *np = netdev_priv(dev);
6163 u16 phy_reserved, mii_control;
6164
6165 if (np->phy_oui == PHY_OUI_REALTEK &&
6166 np->phy_model == PHY_MODEL_REALTEK_8201 &&
6167 phy_cross == NV_CROSSOVER_DETECTION_DISABLED) {
6168 mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3);
6169 phy_reserved = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG2, MII_READ);
6170 phy_reserved &= ~PHY_REALTEK_INIT_MSK1;
6171 phy_reserved |= PHY_REALTEK_INIT8;
6172 mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG2, phy_reserved);
6173 mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1);
6174
6175 /* restart auto negotiation */
6176 mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
6177 mii_control |= (BMCR_ANRESTART | BMCR_ANENABLE);
6178 mii_rw(dev, np->phyaddr, MII_BMCR, mii_control);
6179 }
6180}
6181
6182static void nv_restore_mac_addr(struct pci_dev *pci_dev)
6183{
6184 struct net_device *dev = pci_get_drvdata(pci_dev);
6185 struct fe_priv *np = netdev_priv(dev);
6186 u8 __iomem *base = get_hwbase(dev);
6187
6188 /* special op: write back the misordered MAC address - otherwise
6189 * the next nv_probe would see a wrong address.
6190 */
6191 writel(np->orig_mac[0], base + NvRegMacAddrA);
6192 writel(np->orig_mac[1], base + NvRegMacAddrB);
6193 writel(readl(base + NvRegTransmitPoll) & ~NVREG_TRANSMITPOLL_MAC_ADDR_REV,
6194 base + NvRegTransmitPoll);
6195}
6196
6197static void nv_remove(struct pci_dev *pci_dev)
6198{
6199 struct net_device *dev = pci_get_drvdata(pci_dev);
6200 struct fe_priv *np = netdev_priv(dev);
6201
6202 free_percpu(np->txrx_stats);
6203
6204 unregister_netdev(dev);
6205
6206 nv_restore_mac_addr(pci_dev);
6207
6208 /* restore any phy related changes */
6209 nv_restore_phy(dev);
6210
6211 nv_mgmt_release_sema(dev);
6212
6213 /* free all structures */
6214 free_rings(dev);
6215 iounmap(get_hwbase(dev));
6216 pci_release_regions(pci_dev);
6217 pci_disable_device(pci_dev);
6218 free_netdev(dev);
6219}
6220
6221#ifdef CONFIG_PM_SLEEP
6222static int nv_suspend(struct device *device)
6223{
6224 struct net_device *dev = dev_get_drvdata(device);
6225 struct fe_priv *np = netdev_priv(dev);
6226 u8 __iomem *base = get_hwbase(dev);
6227 int i;
6228
6229 if (netif_running(dev)) {
6230 /* Gross. */
6231 nv_close(dev);
6232 }
6233 netif_device_detach(dev);
6234
6235 /* save non-pci configuration space */
6236 for (i = 0; i <= np->register_size/sizeof(u32); i++)
6237 np->saved_config_space[i] = readl(base + i*sizeof(u32));
6238
6239 return 0;
6240}
6241
6242static int nv_resume(struct device *device)
6243{
6244 struct pci_dev *pdev = to_pci_dev(device);
6245 struct net_device *dev = pci_get_drvdata(pdev);
6246 struct fe_priv *np = netdev_priv(dev);
6247 u8 __iomem *base = get_hwbase(dev);
6248 int i, rc = 0;
6249
6250 /* restore non-pci configuration space */
6251 for (i = 0; i <= np->register_size/sizeof(u32); i++)
6252 writel(np->saved_config_space[i], base+i*sizeof(u32));
6253
6254 if (np->driver_data & DEV_NEED_MSI_FIX)
6255 pci_write_config_dword(pdev, NV_MSI_PRIV_OFFSET, NV_MSI_PRIV_VALUE);
6256
6257 /* restore phy state, including autoneg */
6258 phy_init(dev);
6259
6260 netif_device_attach(dev);
6261 if (netif_running(dev)) {
6262 rc = nv_open(dev);
6263 nv_set_multicast(dev);
6264 }
6265 return rc;
6266}
6267
6268static SIMPLE_DEV_PM_OPS(nv_pm_ops, nv_suspend, nv_resume);
6269#define NV_PM_OPS (&nv_pm_ops)
6270
6271#else
6272#define NV_PM_OPS NULL
6273#endif /* CONFIG_PM_SLEEP */
6274
6275#ifdef CONFIG_PM
6276static void nv_shutdown(struct pci_dev *pdev)
6277{
6278 struct net_device *dev = pci_get_drvdata(pdev);
6279 struct fe_priv *np = netdev_priv(dev);
6280
6281 if (netif_running(dev))
6282 nv_close(dev);
6283
6284 /*
6285 * Restore the MAC so a kernel started by kexec won't get confused.
6286 * If we really go for poweroff, we must not restore the MAC,
6287 * otherwise the MAC for WOL will be reversed at least on some boards.
6288 */
6289 if (system_state != SYSTEM_POWER_OFF)
6290 nv_restore_mac_addr(pdev);
6291
6292 pci_disable_device(pdev);
6293 /*
6294 * Apparently it is not possible to reinitialise from D3 hot,
6295 * only put the device into D3 if we really go for poweroff.
6296 */
6297 if (system_state == SYSTEM_POWER_OFF) {
6298 pci_wake_from_d3(pdev, np->wolenabled);
6299 pci_set_power_state(pdev, PCI_D3hot);
6300 }
6301}
6302#else
6303#define nv_shutdown NULL
6304#endif /* CONFIG_PM */
6305
6306static const struct pci_device_id pci_tbl[] = {
6307 { /* nForce Ethernet Controller */
6308 PCI_DEVICE(0x10DE, 0x01C3),
6309 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
6310 },
6311 { /* nForce2 Ethernet Controller */
6312 PCI_DEVICE(0x10DE, 0x0066),
6313 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
6314 },
6315 { /* nForce3 Ethernet Controller */
6316 PCI_DEVICE(0x10DE, 0x00D6),
6317 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
6318 },
6319 { /* nForce3 Ethernet Controller */
6320 PCI_DEVICE(0x10DE, 0x0086),
6321 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
6322 },
6323 { /* nForce3 Ethernet Controller */
6324 PCI_DEVICE(0x10DE, 0x008C),
6325 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
6326 },
6327 { /* nForce3 Ethernet Controller */
6328 PCI_DEVICE(0x10DE, 0x00E6),
6329 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
6330 },
6331 { /* nForce3 Ethernet Controller */
6332 PCI_DEVICE(0x10DE, 0x00DF),
6333 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
6334 },
6335 { /* CK804 Ethernet Controller */
6336 PCI_DEVICE(0x10DE, 0x0056),
6337 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
6338 },
6339 { /* CK804 Ethernet Controller */
6340 PCI_DEVICE(0x10DE, 0x0057),
6341 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
6342 },
6343 { /* MCP04 Ethernet Controller */
6344 PCI_DEVICE(0x10DE, 0x0037),
6345 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
6346 },
6347 { /* MCP04 Ethernet Controller */
6348 PCI_DEVICE(0x10DE, 0x0038),
6349 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
6350 },
6351 { /* MCP51 Ethernet Controller */
6352 PCI_DEVICE(0x10DE, 0x0268),
6353 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V1|DEV_NEED_LOW_POWER_FIX,
6354 },
6355 { /* MCP51 Ethernet Controller */
6356 PCI_DEVICE(0x10DE, 0x0269),
6357 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V1|DEV_NEED_LOW_POWER_FIX,
6358 },
6359 { /* MCP55 Ethernet Controller */
6360 PCI_DEVICE(0x10DE, 0x0372),
6361 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_VLAN|DEV_HAS_MSI|DEV_HAS_MSI_X|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_NEED_TX_LIMIT|DEV_NEED_MSI_FIX,
6362 },
6363 { /* MCP55 Ethernet Controller */
6364 PCI_DEVICE(0x10DE, 0x0373),
6365 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_VLAN|DEV_HAS_MSI|DEV_HAS_MSI_X|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_NEED_TX_LIMIT|DEV_NEED_MSI_FIX,
6366 },
6367 { /* MCP61 Ethernet Controller */
6368 PCI_DEVICE(0x10DE, 0x03E5),
6369 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_MSI_FIX,
6370 },
6371 { /* MCP61 Ethernet Controller */
6372 PCI_DEVICE(0x10DE, 0x03E6),
6373 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_MSI_FIX,
6374 },
6375 { /* MCP61 Ethernet Controller */
6376 PCI_DEVICE(0x10DE, 0x03EE),
6377 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_MSI_FIX,
6378 },
6379 { /* MCP61 Ethernet Controller */
6380 PCI_DEVICE(0x10DE, 0x03EF),
6381 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_MSI_FIX,
6382 },
6383 { /* MCP65 Ethernet Controller */
6384 PCI_DEVICE(0x10DE, 0x0450),
6385 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6386 },
6387 { /* MCP65 Ethernet Controller */
6388 PCI_DEVICE(0x10DE, 0x0451),
6389 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6390 },
6391 { /* MCP65 Ethernet Controller */
6392 PCI_DEVICE(0x10DE, 0x0452),
6393 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6394 },
6395 { /* MCP65 Ethernet Controller */
6396 PCI_DEVICE(0x10DE, 0x0453),
6397 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6398 },
6399 { /* MCP67 Ethernet Controller */
6400 PCI_DEVICE(0x10DE, 0x054C),
6401 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6402 },
6403 { /* MCP67 Ethernet Controller */
6404 PCI_DEVICE(0x10DE, 0x054D),
6405 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6406 },
6407 { /* MCP67 Ethernet Controller */
6408 PCI_DEVICE(0x10DE, 0x054E),
6409 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6410 },
6411 { /* MCP67 Ethernet Controller */
6412 PCI_DEVICE(0x10DE, 0x054F),
6413 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6414 },
6415 { /* MCP73 Ethernet Controller */
6416 PCI_DEVICE(0x10DE, 0x07DC),
6417 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6418 },
6419 { /* MCP73 Ethernet Controller */
6420 PCI_DEVICE(0x10DE, 0x07DD),
6421 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6422 },
6423 { /* MCP73 Ethernet Controller */
6424 PCI_DEVICE(0x10DE, 0x07DE),
6425 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6426 },
6427 { /* MCP73 Ethernet Controller */
6428 PCI_DEVICE(0x10DE, 0x07DF),
6429 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6430 },
6431 { /* MCP77 Ethernet Controller */
6432 PCI_DEVICE(0x10DE, 0x0760),
6433 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V2|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
6434 },
6435 { /* MCP77 Ethernet Controller */
6436 PCI_DEVICE(0x10DE, 0x0761),
6437 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V2|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
6438 },
6439 { /* MCP77 Ethernet Controller */
6440 PCI_DEVICE(0x10DE, 0x0762),
6441 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V2|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
6442 },
6443 { /* MCP77 Ethernet Controller */
6444 PCI_DEVICE(0x10DE, 0x0763),
6445 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V2|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
6446 },
6447 { /* MCP79 Ethernet Controller */
6448 PCI_DEVICE(0x10DE, 0x0AB0),
6449 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
6450 },
6451 { /* MCP79 Ethernet Controller */
6452 PCI_DEVICE(0x10DE, 0x0AB1),
6453 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
6454 },
6455 { /* MCP79 Ethernet Controller */
6456 PCI_DEVICE(0x10DE, 0x0AB2),
6457 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
6458 },
6459 { /* MCP79 Ethernet Controller */
6460 PCI_DEVICE(0x10DE, 0x0AB3),
6461 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
6462 },
6463 { /* MCP89 Ethernet Controller */
6464 PCI_DEVICE(0x10DE, 0x0D7D),
6465 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX,
6466 },
6467 {0,},
6468};
6469
6470static struct pci_driver forcedeth_pci_driver = {
6471 .name = DRV_NAME,
6472 .id_table = pci_tbl,
6473 .probe = nv_probe,
6474 .remove = nv_remove,
6475 .shutdown = nv_shutdown,
6476 .driver.pm = NV_PM_OPS,
6477};
6478
6479module_param(max_interrupt_work, int, 0);
6480MODULE_PARM_DESC(max_interrupt_work, "forcedeth maximum events handled per interrupt");
6481module_param(optimization_mode, int, 0);
6482MODULE_PARM_DESC(optimization_mode, "In throughput mode (0), every tx & rx packet will generate an interrupt. In CPU mode (1), interrupts are controlled by a timer. In dynamic mode (2), the mode toggles between throughput and CPU mode based on network load.");
6483module_param(poll_interval, int, 0);
6484MODULE_PARM_DESC(poll_interval, "Interval determines how frequent timer interrupt is generated by [(time_in_micro_secs * 100) / (2^10)]. Min is 0 and Max is 65535.");
6485module_param(msi, int, 0);
6486MODULE_PARM_DESC(msi, "MSI interrupts are enabled by setting to 1 and disabled by setting to 0.");
6487module_param(msix, int, 0);
6488MODULE_PARM_DESC(msix, "MSIX interrupts are enabled by setting to 1 and disabled by setting to 0.");
6489module_param(dma_64bit, int, 0);
6490MODULE_PARM_DESC(dma_64bit, "High DMA is enabled by setting to 1 and disabled by setting to 0.");
6491module_param(phy_cross, int, 0);
6492MODULE_PARM_DESC(phy_cross, "Phy crossover detection for Realtek 8201 phy is enabled by setting to 1 and disabled by setting to 0.");
6493module_param(phy_power_down, int, 0);
6494MODULE_PARM_DESC(phy_power_down, "Power down phy and disable link when interface is down (1), or leave phy powered up (0).");
6495module_param(debug_tx_timeout, bool, 0);
6496MODULE_PARM_DESC(debug_tx_timeout,
6497 "Dump tx related registers and ring when tx_timeout happens");
6498
6499module_pci_driver(forcedeth_pci_driver);
6500MODULE_AUTHOR("Manfred Spraul <manfred@colorfullife.com>");
6501MODULE_DESCRIPTION("Reverse Engineered nForce ethernet driver");
6502MODULE_LICENSE("GPL");
6503MODULE_DEVICE_TABLE(pci, pci_tbl);
1/*
2 * forcedeth: Ethernet driver for NVIDIA nForce media access controllers.
3 *
4 * Note: This driver is a cleanroom reimplementation based on reverse
5 * engineered documentation written by Carl-Daniel Hailfinger
6 * and Andrew de Quincey.
7 *
8 * NVIDIA, nForce and other NVIDIA marks are trademarks or registered
9 * trademarks of NVIDIA Corporation in the United States and other
10 * countries.
11 *
12 * Copyright (C) 2003,4,5 Manfred Spraul
13 * Copyright (C) 2004 Andrew de Quincey (wol support)
14 * Copyright (C) 2004 Carl-Daniel Hailfinger (invalid MAC handling, insane
15 * IRQ rate fixes, bigendian fixes, cleanups, verification)
16 * Copyright (c) 2004,2005,2006,2007,2008,2009 NVIDIA Corporation
17 *
18 * This program is free software; you can redistribute it and/or modify
19 * it under the terms of the GNU General Public License as published by
20 * the Free Software Foundation; either version 2 of the License, or
21 * (at your option) any later version.
22 *
23 * This program is distributed in the hope that it will be useful,
24 * but WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26 * GNU General Public License for more details.
27 *
28 * You should have received a copy of the GNU General Public License
29 * along with this program; if not, write to the Free Software
30 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
31 *
32 * Known bugs:
33 * We suspect that on some hardware no TX done interrupts are generated.
34 * This means recovery from netif_stop_queue only happens if the hw timer
35 * interrupt fires (100 times/second, configurable with NVREG_POLL_DEFAULT)
36 * and the timer is active in the IRQMask, or if a rx packet arrives by chance.
37 * If your hardware reliably generates tx done interrupts, then you can remove
38 * DEV_NEED_TIMERIRQ from the driver_data flags.
39 * DEV_NEED_TIMERIRQ will not harm you on sane hardware, only generating a few
40 * superfluous timer interrupts from the nic.
41 */
42
43#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
44
45#define FORCEDETH_VERSION "0.64"
46#define DRV_NAME "forcedeth"
47
48#include <linux/module.h>
49#include <linux/types.h>
50#include <linux/pci.h>
51#include <linux/interrupt.h>
52#include <linux/netdevice.h>
53#include <linux/etherdevice.h>
54#include <linux/delay.h>
55#include <linux/sched.h>
56#include <linux/spinlock.h>
57#include <linux/ethtool.h>
58#include <linux/timer.h>
59#include <linux/skbuff.h>
60#include <linux/mii.h>
61#include <linux/random.h>
62#include <linux/init.h>
63#include <linux/if_vlan.h>
64#include <linux/dma-mapping.h>
65#include <linux/slab.h>
66#include <linux/uaccess.h>
67#include <linux/prefetch.h>
68#include <linux/u64_stats_sync.h>
69#include <linux/io.h>
70
71#include <asm/irq.h>
72
73#define TX_WORK_PER_LOOP 64
74#define RX_WORK_PER_LOOP 64
75
76/*
77 * Hardware access:
78 */
79
80#define DEV_NEED_TIMERIRQ 0x0000001 /* set the timer irq flag in the irq mask */
81#define DEV_NEED_LINKTIMER 0x0000002 /* poll link settings. Relies on the timer irq */
82#define DEV_HAS_LARGEDESC 0x0000004 /* device supports jumbo frames and needs packet format 2 */
83#define DEV_HAS_HIGH_DMA 0x0000008 /* device supports 64bit dma */
84#define DEV_HAS_CHECKSUM 0x0000010 /* device supports tx and rx checksum offloads */
85#define DEV_HAS_VLAN 0x0000020 /* device supports vlan tagging and striping */
86#define DEV_HAS_MSI 0x0000040 /* device supports MSI */
87#define DEV_HAS_MSI_X 0x0000080 /* device supports MSI-X */
88#define DEV_HAS_POWER_CNTRL 0x0000100 /* device supports power savings */
89#define DEV_HAS_STATISTICS_V1 0x0000200 /* device supports hw statistics version 1 */
90#define DEV_HAS_STATISTICS_V2 0x0000400 /* device supports hw statistics version 2 */
91#define DEV_HAS_STATISTICS_V3 0x0000800 /* device supports hw statistics version 3 */
92#define DEV_HAS_STATISTICS_V12 0x0000600 /* device supports hw statistics version 1 and 2 */
93#define DEV_HAS_STATISTICS_V123 0x0000e00 /* device supports hw statistics version 1, 2, and 3 */
94#define DEV_HAS_TEST_EXTENDED 0x0001000 /* device supports extended diagnostic test */
95#define DEV_HAS_MGMT_UNIT 0x0002000 /* device supports management unit */
96#define DEV_HAS_CORRECT_MACADDR 0x0004000 /* device supports correct mac address order */
97#define DEV_HAS_COLLISION_FIX 0x0008000 /* device supports tx collision fix */
98#define DEV_HAS_PAUSEFRAME_TX_V1 0x0010000 /* device supports tx pause frames version 1 */
99#define DEV_HAS_PAUSEFRAME_TX_V2 0x0020000 /* device supports tx pause frames version 2 */
100#define DEV_HAS_PAUSEFRAME_TX_V3 0x0040000 /* device supports tx pause frames version 3 */
101#define DEV_NEED_TX_LIMIT 0x0080000 /* device needs to limit tx */
102#define DEV_NEED_TX_LIMIT2 0x0180000 /* device needs to limit tx, expect for some revs */
103#define DEV_HAS_GEAR_MODE 0x0200000 /* device supports gear mode */
104#define DEV_NEED_PHY_INIT_FIX 0x0400000 /* device needs specific phy workaround */
105#define DEV_NEED_LOW_POWER_FIX 0x0800000 /* device needs special power up workaround */
106#define DEV_NEED_MSI_FIX 0x1000000 /* device needs msi workaround */
107
108enum {
109 NvRegIrqStatus = 0x000,
110#define NVREG_IRQSTAT_MIIEVENT 0x040
111#define NVREG_IRQSTAT_MASK 0x83ff
112 NvRegIrqMask = 0x004,
113#define NVREG_IRQ_RX_ERROR 0x0001
114#define NVREG_IRQ_RX 0x0002
115#define NVREG_IRQ_RX_NOBUF 0x0004
116#define NVREG_IRQ_TX_ERR 0x0008
117#define NVREG_IRQ_TX_OK 0x0010
118#define NVREG_IRQ_TIMER 0x0020
119#define NVREG_IRQ_LINK 0x0040
120#define NVREG_IRQ_RX_FORCED 0x0080
121#define NVREG_IRQ_TX_FORCED 0x0100
122#define NVREG_IRQ_RECOVER_ERROR 0x8200
123#define NVREG_IRQMASK_THROUGHPUT 0x00df
124#define NVREG_IRQMASK_CPU 0x0060
125#define NVREG_IRQ_TX_ALL (NVREG_IRQ_TX_ERR|NVREG_IRQ_TX_OK|NVREG_IRQ_TX_FORCED)
126#define NVREG_IRQ_RX_ALL (NVREG_IRQ_RX_ERROR|NVREG_IRQ_RX|NVREG_IRQ_RX_NOBUF|NVREG_IRQ_RX_FORCED)
127#define NVREG_IRQ_OTHER (NVREG_IRQ_TIMER|NVREG_IRQ_LINK|NVREG_IRQ_RECOVER_ERROR)
128
129 NvRegUnknownSetupReg6 = 0x008,
130#define NVREG_UNKSETUP6_VAL 3
131
132/*
133 * NVREG_POLL_DEFAULT is the interval length of the timer source on the nic
134 * NVREG_POLL_DEFAULT=97 would result in an interval length of 1 ms
135 */
136 NvRegPollingInterval = 0x00c,
137#define NVREG_POLL_DEFAULT_THROUGHPUT 65535 /* backup tx cleanup if loop max reached */
138#define NVREG_POLL_DEFAULT_CPU 13
139 NvRegMSIMap0 = 0x020,
140 NvRegMSIMap1 = 0x024,
141 NvRegMSIIrqMask = 0x030,
142#define NVREG_MSI_VECTOR_0_ENABLED 0x01
143 NvRegMisc1 = 0x080,
144#define NVREG_MISC1_PAUSE_TX 0x01
145#define NVREG_MISC1_HD 0x02
146#define NVREG_MISC1_FORCE 0x3b0f3c
147
148 NvRegMacReset = 0x34,
149#define NVREG_MAC_RESET_ASSERT 0x0F3
150 NvRegTransmitterControl = 0x084,
151#define NVREG_XMITCTL_START 0x01
152#define NVREG_XMITCTL_MGMT_ST 0x40000000
153#define NVREG_XMITCTL_SYNC_MASK 0x000f0000
154#define NVREG_XMITCTL_SYNC_NOT_READY 0x0
155#define NVREG_XMITCTL_SYNC_PHY_INIT 0x00040000
156#define NVREG_XMITCTL_MGMT_SEMA_MASK 0x00000f00
157#define NVREG_XMITCTL_MGMT_SEMA_FREE 0x0
158#define NVREG_XMITCTL_HOST_SEMA_MASK 0x0000f000
159#define NVREG_XMITCTL_HOST_SEMA_ACQ 0x0000f000
160#define NVREG_XMITCTL_HOST_LOADED 0x00004000
161#define NVREG_XMITCTL_TX_PATH_EN 0x01000000
162#define NVREG_XMITCTL_DATA_START 0x00100000
163#define NVREG_XMITCTL_DATA_READY 0x00010000
164#define NVREG_XMITCTL_DATA_ERROR 0x00020000
165 NvRegTransmitterStatus = 0x088,
166#define NVREG_XMITSTAT_BUSY 0x01
167
168 NvRegPacketFilterFlags = 0x8c,
169#define NVREG_PFF_PAUSE_RX 0x08
170#define NVREG_PFF_ALWAYS 0x7F0000
171#define NVREG_PFF_PROMISC 0x80
172#define NVREG_PFF_MYADDR 0x20
173#define NVREG_PFF_LOOPBACK 0x10
174
175 NvRegOffloadConfig = 0x90,
176#define NVREG_OFFLOAD_HOMEPHY 0x601
177#define NVREG_OFFLOAD_NORMAL RX_NIC_BUFSIZE
178 NvRegReceiverControl = 0x094,
179#define NVREG_RCVCTL_START 0x01
180#define NVREG_RCVCTL_RX_PATH_EN 0x01000000
181 NvRegReceiverStatus = 0x98,
182#define NVREG_RCVSTAT_BUSY 0x01
183
184 NvRegSlotTime = 0x9c,
185#define NVREG_SLOTTIME_LEGBF_ENABLED 0x80000000
186#define NVREG_SLOTTIME_10_100_FULL 0x00007f00
187#define NVREG_SLOTTIME_1000_FULL 0x0003ff00
188#define NVREG_SLOTTIME_HALF 0x0000ff00
189#define NVREG_SLOTTIME_DEFAULT 0x00007f00
190#define NVREG_SLOTTIME_MASK 0x000000ff
191
192 NvRegTxDeferral = 0xA0,
193#define NVREG_TX_DEFERRAL_DEFAULT 0x15050f
194#define NVREG_TX_DEFERRAL_RGMII_10_100 0x16070f
195#define NVREG_TX_DEFERRAL_RGMII_1000 0x14050f
196#define NVREG_TX_DEFERRAL_RGMII_STRETCH_10 0x16190f
197#define NVREG_TX_DEFERRAL_RGMII_STRETCH_100 0x16300f
198#define NVREG_TX_DEFERRAL_MII_STRETCH 0x152000
199 NvRegRxDeferral = 0xA4,
200#define NVREG_RX_DEFERRAL_DEFAULT 0x16
201 NvRegMacAddrA = 0xA8,
202 NvRegMacAddrB = 0xAC,
203 NvRegMulticastAddrA = 0xB0,
204#define NVREG_MCASTADDRA_FORCE 0x01
205 NvRegMulticastAddrB = 0xB4,
206 NvRegMulticastMaskA = 0xB8,
207#define NVREG_MCASTMASKA_NONE 0xffffffff
208 NvRegMulticastMaskB = 0xBC,
209#define NVREG_MCASTMASKB_NONE 0xffff
210
211 NvRegPhyInterface = 0xC0,
212#define PHY_RGMII 0x10000000
213 NvRegBackOffControl = 0xC4,
214#define NVREG_BKOFFCTRL_DEFAULT 0x70000000
215#define NVREG_BKOFFCTRL_SEED_MASK 0x000003ff
216#define NVREG_BKOFFCTRL_SELECT 24
217#define NVREG_BKOFFCTRL_GEAR 12
218
219 NvRegTxRingPhysAddr = 0x100,
220 NvRegRxRingPhysAddr = 0x104,
221 NvRegRingSizes = 0x108,
222#define NVREG_RINGSZ_TXSHIFT 0
223#define NVREG_RINGSZ_RXSHIFT 16
224 NvRegTransmitPoll = 0x10c,
225#define NVREG_TRANSMITPOLL_MAC_ADDR_REV 0x00008000
226 NvRegLinkSpeed = 0x110,
227#define NVREG_LINKSPEED_FORCE 0x10000
228#define NVREG_LINKSPEED_10 1000
229#define NVREG_LINKSPEED_100 100
230#define NVREG_LINKSPEED_1000 50
231#define NVREG_LINKSPEED_MASK (0xFFF)
232 NvRegUnknownSetupReg5 = 0x130,
233#define NVREG_UNKSETUP5_BIT31 (1<<31)
234 NvRegTxWatermark = 0x13c,
235#define NVREG_TX_WM_DESC1_DEFAULT 0x0200010
236#define NVREG_TX_WM_DESC2_3_DEFAULT 0x1e08000
237#define NVREG_TX_WM_DESC2_3_1000 0xfe08000
238 NvRegTxRxControl = 0x144,
239#define NVREG_TXRXCTL_KICK 0x0001
240#define NVREG_TXRXCTL_BIT1 0x0002
241#define NVREG_TXRXCTL_BIT2 0x0004
242#define NVREG_TXRXCTL_IDLE 0x0008
243#define NVREG_TXRXCTL_RESET 0x0010
244#define NVREG_TXRXCTL_RXCHECK 0x0400
245#define NVREG_TXRXCTL_DESC_1 0
246#define NVREG_TXRXCTL_DESC_2 0x002100
247#define NVREG_TXRXCTL_DESC_3 0xc02200
248#define NVREG_TXRXCTL_VLANSTRIP 0x00040
249#define NVREG_TXRXCTL_VLANINS 0x00080
250 NvRegTxRingPhysAddrHigh = 0x148,
251 NvRegRxRingPhysAddrHigh = 0x14C,
252 NvRegTxPauseFrame = 0x170,
253#define NVREG_TX_PAUSEFRAME_DISABLE 0x0fff0080
254#define NVREG_TX_PAUSEFRAME_ENABLE_V1 0x01800010
255#define NVREG_TX_PAUSEFRAME_ENABLE_V2 0x056003f0
256#define NVREG_TX_PAUSEFRAME_ENABLE_V3 0x09f00880
257 NvRegTxPauseFrameLimit = 0x174,
258#define NVREG_TX_PAUSEFRAMELIMIT_ENABLE 0x00010000
259 NvRegMIIStatus = 0x180,
260#define NVREG_MIISTAT_ERROR 0x0001
261#define NVREG_MIISTAT_LINKCHANGE 0x0008
262#define NVREG_MIISTAT_MASK_RW 0x0007
263#define NVREG_MIISTAT_MASK_ALL 0x000f
264 NvRegMIIMask = 0x184,
265#define NVREG_MII_LINKCHANGE 0x0008
266
267 NvRegAdapterControl = 0x188,
268#define NVREG_ADAPTCTL_START 0x02
269#define NVREG_ADAPTCTL_LINKUP 0x04
270#define NVREG_ADAPTCTL_PHYVALID 0x40000
271#define NVREG_ADAPTCTL_RUNNING 0x100000
272#define NVREG_ADAPTCTL_PHYSHIFT 24
273 NvRegMIISpeed = 0x18c,
274#define NVREG_MIISPEED_BIT8 (1<<8)
275#define NVREG_MIIDELAY 5
276 NvRegMIIControl = 0x190,
277#define NVREG_MIICTL_INUSE 0x08000
278#define NVREG_MIICTL_WRITE 0x00400
279#define NVREG_MIICTL_ADDRSHIFT 5
280 NvRegMIIData = 0x194,
281 NvRegTxUnicast = 0x1a0,
282 NvRegTxMulticast = 0x1a4,
283 NvRegTxBroadcast = 0x1a8,
284 NvRegWakeUpFlags = 0x200,
285#define NVREG_WAKEUPFLAGS_VAL 0x7770
286#define NVREG_WAKEUPFLAGS_BUSYSHIFT 24
287#define NVREG_WAKEUPFLAGS_ENABLESHIFT 16
288#define NVREG_WAKEUPFLAGS_D3SHIFT 12
289#define NVREG_WAKEUPFLAGS_D2SHIFT 8
290#define NVREG_WAKEUPFLAGS_D1SHIFT 4
291#define NVREG_WAKEUPFLAGS_D0SHIFT 0
292#define NVREG_WAKEUPFLAGS_ACCEPT_MAGPAT 0x01
293#define NVREG_WAKEUPFLAGS_ACCEPT_WAKEUPPAT 0x02
294#define NVREG_WAKEUPFLAGS_ACCEPT_LINKCHANGE 0x04
295#define NVREG_WAKEUPFLAGS_ENABLE 0x1111
296
297 NvRegMgmtUnitGetVersion = 0x204,
298#define NVREG_MGMTUNITGETVERSION 0x01
299 NvRegMgmtUnitVersion = 0x208,
300#define NVREG_MGMTUNITVERSION 0x08
301 NvRegPowerCap = 0x268,
302#define NVREG_POWERCAP_D3SUPP (1<<30)
303#define NVREG_POWERCAP_D2SUPP (1<<26)
304#define NVREG_POWERCAP_D1SUPP (1<<25)
305 NvRegPowerState = 0x26c,
306#define NVREG_POWERSTATE_POWEREDUP 0x8000
307#define NVREG_POWERSTATE_VALID 0x0100
308#define NVREG_POWERSTATE_MASK 0x0003
309#define NVREG_POWERSTATE_D0 0x0000
310#define NVREG_POWERSTATE_D1 0x0001
311#define NVREG_POWERSTATE_D2 0x0002
312#define NVREG_POWERSTATE_D3 0x0003
313 NvRegMgmtUnitControl = 0x278,
314#define NVREG_MGMTUNITCONTROL_INUSE 0x20000
315 NvRegTxCnt = 0x280,
316 NvRegTxZeroReXmt = 0x284,
317 NvRegTxOneReXmt = 0x288,
318 NvRegTxManyReXmt = 0x28c,
319 NvRegTxLateCol = 0x290,
320 NvRegTxUnderflow = 0x294,
321 NvRegTxLossCarrier = 0x298,
322 NvRegTxExcessDef = 0x29c,
323 NvRegTxRetryErr = 0x2a0,
324 NvRegRxFrameErr = 0x2a4,
325 NvRegRxExtraByte = 0x2a8,
326 NvRegRxLateCol = 0x2ac,
327 NvRegRxRunt = 0x2b0,
328 NvRegRxFrameTooLong = 0x2b4,
329 NvRegRxOverflow = 0x2b8,
330 NvRegRxFCSErr = 0x2bc,
331 NvRegRxFrameAlignErr = 0x2c0,
332 NvRegRxLenErr = 0x2c4,
333 NvRegRxUnicast = 0x2c8,
334 NvRegRxMulticast = 0x2cc,
335 NvRegRxBroadcast = 0x2d0,
336 NvRegTxDef = 0x2d4,
337 NvRegTxFrame = 0x2d8,
338 NvRegRxCnt = 0x2dc,
339 NvRegTxPause = 0x2e0,
340 NvRegRxPause = 0x2e4,
341 NvRegRxDropFrame = 0x2e8,
342 NvRegVlanControl = 0x300,
343#define NVREG_VLANCONTROL_ENABLE 0x2000
344 NvRegMSIXMap0 = 0x3e0,
345 NvRegMSIXMap1 = 0x3e4,
346 NvRegMSIXIrqStatus = 0x3f0,
347
348 NvRegPowerState2 = 0x600,
349#define NVREG_POWERSTATE2_POWERUP_MASK 0x0F15
350#define NVREG_POWERSTATE2_POWERUP_REV_A3 0x0001
351#define NVREG_POWERSTATE2_PHY_RESET 0x0004
352#define NVREG_POWERSTATE2_GATE_CLOCKS 0x0F00
353};
354
355/* Big endian: should work, but is untested */
356struct ring_desc {
357 __le32 buf;
358 __le32 flaglen;
359};
360
361struct ring_desc_ex {
362 __le32 bufhigh;
363 __le32 buflow;
364 __le32 txvlan;
365 __le32 flaglen;
366};
367
368union ring_type {
369 struct ring_desc *orig;
370 struct ring_desc_ex *ex;
371};
372
373#define FLAG_MASK_V1 0xffff0000
374#define FLAG_MASK_V2 0xffffc000
375#define LEN_MASK_V1 (0xffffffff ^ FLAG_MASK_V1)
376#define LEN_MASK_V2 (0xffffffff ^ FLAG_MASK_V2)
377
378#define NV_TX_LASTPACKET (1<<16)
379#define NV_TX_RETRYERROR (1<<19)
380#define NV_TX_RETRYCOUNT_MASK (0xF<<20)
381#define NV_TX_FORCED_INTERRUPT (1<<24)
382#define NV_TX_DEFERRED (1<<26)
383#define NV_TX_CARRIERLOST (1<<27)
384#define NV_TX_LATECOLLISION (1<<28)
385#define NV_TX_UNDERFLOW (1<<29)
386#define NV_TX_ERROR (1<<30)
387#define NV_TX_VALID (1<<31)
388
389#define NV_TX2_LASTPACKET (1<<29)
390#define NV_TX2_RETRYERROR (1<<18)
391#define NV_TX2_RETRYCOUNT_MASK (0xF<<19)
392#define NV_TX2_FORCED_INTERRUPT (1<<30)
393#define NV_TX2_DEFERRED (1<<25)
394#define NV_TX2_CARRIERLOST (1<<26)
395#define NV_TX2_LATECOLLISION (1<<27)
396#define NV_TX2_UNDERFLOW (1<<28)
397/* error and valid are the same for both */
398#define NV_TX2_ERROR (1<<30)
399#define NV_TX2_VALID (1<<31)
400#define NV_TX2_TSO (1<<28)
401#define NV_TX2_TSO_SHIFT 14
402#define NV_TX2_TSO_MAX_SHIFT 14
403#define NV_TX2_TSO_MAX_SIZE (1<<NV_TX2_TSO_MAX_SHIFT)
404#define NV_TX2_CHECKSUM_L3 (1<<27)
405#define NV_TX2_CHECKSUM_L4 (1<<26)
406
407#define NV_TX3_VLAN_TAG_PRESENT (1<<18)
408
409#define NV_RX_DESCRIPTORVALID (1<<16)
410#define NV_RX_MISSEDFRAME (1<<17)
411#define NV_RX_SUBSTRACT1 (1<<18)
412#define NV_RX_ERROR1 (1<<23)
413#define NV_RX_ERROR2 (1<<24)
414#define NV_RX_ERROR3 (1<<25)
415#define NV_RX_ERROR4 (1<<26)
416#define NV_RX_CRCERR (1<<27)
417#define NV_RX_OVERFLOW (1<<28)
418#define NV_RX_FRAMINGERR (1<<29)
419#define NV_RX_ERROR (1<<30)
420#define NV_RX_AVAIL (1<<31)
421#define NV_RX_ERROR_MASK (NV_RX_ERROR1|NV_RX_ERROR2|NV_RX_ERROR3|NV_RX_ERROR4|NV_RX_CRCERR|NV_RX_OVERFLOW|NV_RX_FRAMINGERR)
422
423#define NV_RX2_CHECKSUMMASK (0x1C000000)
424#define NV_RX2_CHECKSUM_IP (0x10000000)
425#define NV_RX2_CHECKSUM_IP_TCP (0x14000000)
426#define NV_RX2_CHECKSUM_IP_UDP (0x18000000)
427#define NV_RX2_DESCRIPTORVALID (1<<29)
428#define NV_RX2_SUBSTRACT1 (1<<25)
429#define NV_RX2_ERROR1 (1<<18)
430#define NV_RX2_ERROR2 (1<<19)
431#define NV_RX2_ERROR3 (1<<20)
432#define NV_RX2_ERROR4 (1<<21)
433#define NV_RX2_CRCERR (1<<22)
434#define NV_RX2_OVERFLOW (1<<23)
435#define NV_RX2_FRAMINGERR (1<<24)
436/* error and avail are the same for both */
437#define NV_RX2_ERROR (1<<30)
438#define NV_RX2_AVAIL (1<<31)
439#define NV_RX2_ERROR_MASK (NV_RX2_ERROR1|NV_RX2_ERROR2|NV_RX2_ERROR3|NV_RX2_ERROR4|NV_RX2_CRCERR|NV_RX2_OVERFLOW|NV_RX2_FRAMINGERR)
440
441#define NV_RX3_VLAN_TAG_PRESENT (1<<16)
442#define NV_RX3_VLAN_TAG_MASK (0x0000FFFF)
443
444/* Miscellaneous hardware related defines: */
445#define NV_PCI_REGSZ_VER1 0x270
446#define NV_PCI_REGSZ_VER2 0x2d4
447#define NV_PCI_REGSZ_VER3 0x604
448#define NV_PCI_REGSZ_MAX 0x604
449
450/* various timeout delays: all in usec */
451#define NV_TXRX_RESET_DELAY 4
452#define NV_TXSTOP_DELAY1 10
453#define NV_TXSTOP_DELAY1MAX 500000
454#define NV_TXSTOP_DELAY2 100
455#define NV_RXSTOP_DELAY1 10
456#define NV_RXSTOP_DELAY1MAX 500000
457#define NV_RXSTOP_DELAY2 100
458#define NV_SETUP5_DELAY 5
459#define NV_SETUP5_DELAYMAX 50000
460#define NV_POWERUP_DELAY 5
461#define NV_POWERUP_DELAYMAX 5000
462#define NV_MIIBUSY_DELAY 50
463#define NV_MIIPHY_DELAY 10
464#define NV_MIIPHY_DELAYMAX 10000
465#define NV_MAC_RESET_DELAY 64
466
467#define NV_WAKEUPPATTERNS 5
468#define NV_WAKEUPMASKENTRIES 4
469
470/* General driver defaults */
471#define NV_WATCHDOG_TIMEO (5*HZ)
472
473#define RX_RING_DEFAULT 512
474#define TX_RING_DEFAULT 256
475#define RX_RING_MIN 128
476#define TX_RING_MIN 64
477#define RING_MAX_DESC_VER_1 1024
478#define RING_MAX_DESC_VER_2_3 16384
479
480/* rx/tx mac addr + type + vlan + align + slack*/
481#define NV_RX_HEADERS (64)
482/* even more slack. */
483#define NV_RX_ALLOC_PAD (64)
484
485/* maximum mtu size */
486#define NV_PKTLIMIT_1 ETH_DATA_LEN /* hard limit not known */
487#define NV_PKTLIMIT_2 9100 /* Actual limit according to NVidia: 9202 */
488
489#define OOM_REFILL (1+HZ/20)
490#define POLL_WAIT (1+HZ/100)
491#define LINK_TIMEOUT (3*HZ)
492#define STATS_INTERVAL (10*HZ)
493
494/*
495 * desc_ver values:
496 * The nic supports three different descriptor types:
497 * - DESC_VER_1: Original
498 * - DESC_VER_2: support for jumbo frames.
499 * - DESC_VER_3: 64-bit format.
500 */
501#define DESC_VER_1 1
502#define DESC_VER_2 2
503#define DESC_VER_3 3
504
505/* PHY defines */
506#define PHY_OUI_MARVELL 0x5043
507#define PHY_OUI_CICADA 0x03f1
508#define PHY_OUI_VITESSE 0x01c1
509#define PHY_OUI_REALTEK 0x0732
510#define PHY_OUI_REALTEK2 0x0020
511#define PHYID1_OUI_MASK 0x03ff
512#define PHYID1_OUI_SHFT 6
513#define PHYID2_OUI_MASK 0xfc00
514#define PHYID2_OUI_SHFT 10
515#define PHYID2_MODEL_MASK 0x03f0
516#define PHY_MODEL_REALTEK_8211 0x0110
517#define PHY_REV_MASK 0x0001
518#define PHY_REV_REALTEK_8211B 0x0000
519#define PHY_REV_REALTEK_8211C 0x0001
520#define PHY_MODEL_REALTEK_8201 0x0200
521#define PHY_MODEL_MARVELL_E3016 0x0220
522#define PHY_MARVELL_E3016_INITMASK 0x0300
523#define PHY_CICADA_INIT1 0x0f000
524#define PHY_CICADA_INIT2 0x0e00
525#define PHY_CICADA_INIT3 0x01000
526#define PHY_CICADA_INIT4 0x0200
527#define PHY_CICADA_INIT5 0x0004
528#define PHY_CICADA_INIT6 0x02000
529#define PHY_VITESSE_INIT_REG1 0x1f
530#define PHY_VITESSE_INIT_REG2 0x10
531#define PHY_VITESSE_INIT_REG3 0x11
532#define PHY_VITESSE_INIT_REG4 0x12
533#define PHY_VITESSE_INIT_MSK1 0xc
534#define PHY_VITESSE_INIT_MSK2 0x0180
535#define PHY_VITESSE_INIT1 0x52b5
536#define PHY_VITESSE_INIT2 0xaf8a
537#define PHY_VITESSE_INIT3 0x8
538#define PHY_VITESSE_INIT4 0x8f8a
539#define PHY_VITESSE_INIT5 0xaf86
540#define PHY_VITESSE_INIT6 0x8f86
541#define PHY_VITESSE_INIT7 0xaf82
542#define PHY_VITESSE_INIT8 0x0100
543#define PHY_VITESSE_INIT9 0x8f82
544#define PHY_VITESSE_INIT10 0x0
545#define PHY_REALTEK_INIT_REG1 0x1f
546#define PHY_REALTEK_INIT_REG2 0x19
547#define PHY_REALTEK_INIT_REG3 0x13
548#define PHY_REALTEK_INIT_REG4 0x14
549#define PHY_REALTEK_INIT_REG5 0x18
550#define PHY_REALTEK_INIT_REG6 0x11
551#define PHY_REALTEK_INIT_REG7 0x01
552#define PHY_REALTEK_INIT1 0x0000
553#define PHY_REALTEK_INIT2 0x8e00
554#define PHY_REALTEK_INIT3 0x0001
555#define PHY_REALTEK_INIT4 0xad17
556#define PHY_REALTEK_INIT5 0xfb54
557#define PHY_REALTEK_INIT6 0xf5c7
558#define PHY_REALTEK_INIT7 0x1000
559#define PHY_REALTEK_INIT8 0x0003
560#define PHY_REALTEK_INIT9 0x0008
561#define PHY_REALTEK_INIT10 0x0005
562#define PHY_REALTEK_INIT11 0x0200
563#define PHY_REALTEK_INIT_MSK1 0x0003
564
565#define PHY_GIGABIT 0x0100
566
567#define PHY_TIMEOUT 0x1
568#define PHY_ERROR 0x2
569
570#define PHY_100 0x1
571#define PHY_1000 0x2
572#define PHY_HALF 0x100
573
574#define NV_PAUSEFRAME_RX_CAPABLE 0x0001
575#define NV_PAUSEFRAME_TX_CAPABLE 0x0002
576#define NV_PAUSEFRAME_RX_ENABLE 0x0004
577#define NV_PAUSEFRAME_TX_ENABLE 0x0008
578#define NV_PAUSEFRAME_RX_REQ 0x0010
579#define NV_PAUSEFRAME_TX_REQ 0x0020
580#define NV_PAUSEFRAME_AUTONEG 0x0040
581
582/* MSI/MSI-X defines */
583#define NV_MSI_X_MAX_VECTORS 8
584#define NV_MSI_X_VECTORS_MASK 0x000f
585#define NV_MSI_CAPABLE 0x0010
586#define NV_MSI_X_CAPABLE 0x0020
587#define NV_MSI_ENABLED 0x0040
588#define NV_MSI_X_ENABLED 0x0080
589
590#define NV_MSI_X_VECTOR_ALL 0x0
591#define NV_MSI_X_VECTOR_RX 0x0
592#define NV_MSI_X_VECTOR_TX 0x1
593#define NV_MSI_X_VECTOR_OTHER 0x2
594
595#define NV_MSI_PRIV_OFFSET 0x68
596#define NV_MSI_PRIV_VALUE 0xffffffff
597
598#define NV_RESTART_TX 0x1
599#define NV_RESTART_RX 0x2
600
601#define NV_TX_LIMIT_COUNT 16
602
603#define NV_DYNAMIC_THRESHOLD 4
604#define NV_DYNAMIC_MAX_QUIET_COUNT 2048
605
606/* statistics */
607struct nv_ethtool_str {
608 char name[ETH_GSTRING_LEN];
609};
610
611static const struct nv_ethtool_str nv_estats_str[] = {
612 { "tx_bytes" }, /* includes Ethernet FCS CRC */
613 { "tx_zero_rexmt" },
614 { "tx_one_rexmt" },
615 { "tx_many_rexmt" },
616 { "tx_late_collision" },
617 { "tx_fifo_errors" },
618 { "tx_carrier_errors" },
619 { "tx_excess_deferral" },
620 { "tx_retry_error" },
621 { "rx_frame_error" },
622 { "rx_extra_byte" },
623 { "rx_late_collision" },
624 { "rx_runt" },
625 { "rx_frame_too_long" },
626 { "rx_over_errors" },
627 { "rx_crc_errors" },
628 { "rx_frame_align_error" },
629 { "rx_length_error" },
630 { "rx_unicast" },
631 { "rx_multicast" },
632 { "rx_broadcast" },
633 { "rx_packets" },
634 { "rx_errors_total" },
635 { "tx_errors_total" },
636
637 /* version 2 stats */
638 { "tx_deferral" },
639 { "tx_packets" },
640 { "rx_bytes" }, /* includes Ethernet FCS CRC */
641 { "tx_pause" },
642 { "rx_pause" },
643 { "rx_drop_frame" },
644
645 /* version 3 stats */
646 { "tx_unicast" },
647 { "tx_multicast" },
648 { "tx_broadcast" }
649};
650
651struct nv_ethtool_stats {
652 u64 tx_bytes; /* should be ifconfig->tx_bytes + 4*tx_packets */
653 u64 tx_zero_rexmt;
654 u64 tx_one_rexmt;
655 u64 tx_many_rexmt;
656 u64 tx_late_collision;
657 u64 tx_fifo_errors;
658 u64 tx_carrier_errors;
659 u64 tx_excess_deferral;
660 u64 tx_retry_error;
661 u64 rx_frame_error;
662 u64 rx_extra_byte;
663 u64 rx_late_collision;
664 u64 rx_runt;
665 u64 rx_frame_too_long;
666 u64 rx_over_errors;
667 u64 rx_crc_errors;
668 u64 rx_frame_align_error;
669 u64 rx_length_error;
670 u64 rx_unicast;
671 u64 rx_multicast;
672 u64 rx_broadcast;
673 u64 rx_packets; /* should be ifconfig->rx_packets */
674 u64 rx_errors_total;
675 u64 tx_errors_total;
676
677 /* version 2 stats */
678 u64 tx_deferral;
679 u64 tx_packets; /* should be ifconfig->tx_packets */
680 u64 rx_bytes; /* should be ifconfig->rx_bytes + 4*rx_packets */
681 u64 tx_pause;
682 u64 rx_pause;
683 u64 rx_drop_frame;
684
685 /* version 3 stats */
686 u64 tx_unicast;
687 u64 tx_multicast;
688 u64 tx_broadcast;
689};
690
691#define NV_DEV_STATISTICS_V3_COUNT (sizeof(struct nv_ethtool_stats)/sizeof(u64))
692#define NV_DEV_STATISTICS_V2_COUNT (NV_DEV_STATISTICS_V3_COUNT - 3)
693#define NV_DEV_STATISTICS_V1_COUNT (NV_DEV_STATISTICS_V2_COUNT - 6)
694
695/* diagnostics */
696#define NV_TEST_COUNT_BASE 3
697#define NV_TEST_COUNT_EXTENDED 4
698
699static const struct nv_ethtool_str nv_etests_str[] = {
700 { "link (online/offline)" },
701 { "register (offline) " },
702 { "interrupt (offline) " },
703 { "loopback (offline) " }
704};
705
706struct register_test {
707 __u32 reg;
708 __u32 mask;
709};
710
711static const struct register_test nv_registers_test[] = {
712 { NvRegUnknownSetupReg6, 0x01 },
713 { NvRegMisc1, 0x03c },
714 { NvRegOffloadConfig, 0x03ff },
715 { NvRegMulticastAddrA, 0xffffffff },
716 { NvRegTxWatermark, 0x0ff },
717 { NvRegWakeUpFlags, 0x07777 },
718 { 0, 0 }
719};
720
721struct nv_skb_map {
722 struct sk_buff *skb;
723 dma_addr_t dma;
724 unsigned int dma_len:31;
725 unsigned int dma_single:1;
726 struct ring_desc_ex *first_tx_desc;
727 struct nv_skb_map *next_tx_ctx;
728};
729
730/*
731 * SMP locking:
732 * All hardware access under netdev_priv(dev)->lock, except the performance
733 * critical parts:
734 * - rx is (pseudo-) lockless: it relies on the single-threading provided
735 * by the arch code for interrupts.
736 * - tx setup is lockless: it relies on netif_tx_lock. Actual submission
737 * needs netdev_priv(dev)->lock :-(
738 * - set_multicast_list: preparation lockless, relies on netif_tx_lock.
739 *
740 * Hardware stats updates are protected by hwstats_lock:
741 * - updated by nv_do_stats_poll (timer). This is meant to avoid
742 * integer wraparound in the NIC stats registers, at low frequency
743 * (0.1 Hz)
744 * - updated by nv_get_ethtool_stats + nv_get_stats64
745 *
746 * Software stats are accessed only through 64b synchronization points
747 * and are not subject to other synchronization techniques (single
748 * update thread on the TX or RX paths).
749 */
750
751/* in dev: base, irq */
752struct fe_priv {
753 spinlock_t lock;
754
755 struct net_device *dev;
756 struct napi_struct napi;
757
758 /* hardware stats are updated in syscall and timer */
759 spinlock_t hwstats_lock;
760 struct nv_ethtool_stats estats;
761
762 int in_shutdown;
763 u32 linkspeed;
764 int duplex;
765 int autoneg;
766 int fixed_mode;
767 int phyaddr;
768 int wolenabled;
769 unsigned int phy_oui;
770 unsigned int phy_model;
771 unsigned int phy_rev;
772 u16 gigabit;
773 int intr_test;
774 int recover_error;
775 int quiet_count;
776
777 /* General data: RO fields */
778 dma_addr_t ring_addr;
779 struct pci_dev *pci_dev;
780 u32 orig_mac[2];
781 u32 events;
782 u32 irqmask;
783 u32 desc_ver;
784 u32 txrxctl_bits;
785 u32 vlanctl_bits;
786 u32 driver_data;
787 u32 device_id;
788 u32 register_size;
789 u32 mac_in_use;
790 int mgmt_version;
791 int mgmt_sema;
792
793 void __iomem *base;
794
795 /* rx specific fields.
796 * Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
797 */
798 union ring_type get_rx, put_rx, first_rx, last_rx;
799 struct nv_skb_map *get_rx_ctx, *put_rx_ctx;
800 struct nv_skb_map *first_rx_ctx, *last_rx_ctx;
801 struct nv_skb_map *rx_skb;
802
803 union ring_type rx_ring;
804 unsigned int rx_buf_sz;
805 unsigned int pkt_limit;
806 struct timer_list oom_kick;
807 struct timer_list nic_poll;
808 struct timer_list stats_poll;
809 u32 nic_poll_irq;
810 int rx_ring_size;
811
812 /* RX software stats */
813 struct u64_stats_sync swstats_rx_syncp;
814 u64 stat_rx_packets;
815 u64 stat_rx_bytes; /* not always available in HW */
816 u64 stat_rx_missed_errors;
817 u64 stat_rx_dropped;
818
819 /* media detection workaround.
820 * Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
821 */
822 int need_linktimer;
823 unsigned long link_timeout;
824 /*
825 * tx specific fields.
826 */
827 union ring_type get_tx, put_tx, first_tx, last_tx;
828 struct nv_skb_map *get_tx_ctx, *put_tx_ctx;
829 struct nv_skb_map *first_tx_ctx, *last_tx_ctx;
830 struct nv_skb_map *tx_skb;
831
832 union ring_type tx_ring;
833 u32 tx_flags;
834 int tx_ring_size;
835 int tx_limit;
836 u32 tx_pkts_in_progress;
837 struct nv_skb_map *tx_change_owner;
838 struct nv_skb_map *tx_end_flip;
839 int tx_stop;
840
841 /* TX software stats */
842 struct u64_stats_sync swstats_tx_syncp;
843 u64 stat_tx_packets; /* not always available in HW */
844 u64 stat_tx_bytes;
845 u64 stat_tx_dropped;
846
847 /* msi/msi-x fields */
848 u32 msi_flags;
849 struct msix_entry msi_x_entry[NV_MSI_X_MAX_VECTORS];
850
851 /* flow control */
852 u32 pause_flags;
853
854 /* power saved state */
855 u32 saved_config_space[NV_PCI_REGSZ_MAX/4];
856
857 /* for different msi-x irq type */
858 char name_rx[IFNAMSIZ + 3]; /* -rx */
859 char name_tx[IFNAMSIZ + 3]; /* -tx */
860 char name_other[IFNAMSIZ + 6]; /* -other */
861};
862
863/*
864 * Maximum number of loops until we assume that a bit in the irq mask
865 * is stuck. Overridable with module param.
866 */
867static int max_interrupt_work = 4;
868
869/*
870 * Optimization can be either throuput mode or cpu mode
871 *
872 * Throughput Mode: Every tx and rx packet will generate an interrupt.
873 * CPU Mode: Interrupts are controlled by a timer.
874 */
875enum {
876 NV_OPTIMIZATION_MODE_THROUGHPUT,
877 NV_OPTIMIZATION_MODE_CPU,
878 NV_OPTIMIZATION_MODE_DYNAMIC
879};
880static int optimization_mode = NV_OPTIMIZATION_MODE_DYNAMIC;
881
882/*
883 * Poll interval for timer irq
884 *
885 * This interval determines how frequent an interrupt is generated.
886 * The is value is determined by [(time_in_micro_secs * 100) / (2^10)]
887 * Min = 0, and Max = 65535
888 */
889static int poll_interval = -1;
890
891/*
892 * MSI interrupts
893 */
894enum {
895 NV_MSI_INT_DISABLED,
896 NV_MSI_INT_ENABLED
897};
898static int msi = NV_MSI_INT_ENABLED;
899
900/*
901 * MSIX interrupts
902 */
903enum {
904 NV_MSIX_INT_DISABLED,
905 NV_MSIX_INT_ENABLED
906};
907static int msix = NV_MSIX_INT_ENABLED;
908
909/*
910 * DMA 64bit
911 */
912enum {
913 NV_DMA_64BIT_DISABLED,
914 NV_DMA_64BIT_ENABLED
915};
916static int dma_64bit = NV_DMA_64BIT_ENABLED;
917
918/*
919 * Debug output control for tx_timeout
920 */
921static bool debug_tx_timeout = false;
922
923/*
924 * Crossover Detection
925 * Realtek 8201 phy + some OEM boards do not work properly.
926 */
927enum {
928 NV_CROSSOVER_DETECTION_DISABLED,
929 NV_CROSSOVER_DETECTION_ENABLED
930};
931static int phy_cross = NV_CROSSOVER_DETECTION_DISABLED;
932
933/*
934 * Power down phy when interface is down (persists through reboot;
935 * older Linux and other OSes may not power it up again)
936 */
937static int phy_power_down;
938
939static inline struct fe_priv *get_nvpriv(struct net_device *dev)
940{
941 return netdev_priv(dev);
942}
943
944static inline u8 __iomem *get_hwbase(struct net_device *dev)
945{
946 return ((struct fe_priv *)netdev_priv(dev))->base;
947}
948
949static inline void pci_push(u8 __iomem *base)
950{
951 /* force out pending posted writes */
952 readl(base);
953}
954
955static inline u32 nv_descr_getlength(struct ring_desc *prd, u32 v)
956{
957 return le32_to_cpu(prd->flaglen)
958 & ((v == DESC_VER_1) ? LEN_MASK_V1 : LEN_MASK_V2);
959}
960
961static inline u32 nv_descr_getlength_ex(struct ring_desc_ex *prd, u32 v)
962{
963 return le32_to_cpu(prd->flaglen) & LEN_MASK_V2;
964}
965
966static bool nv_optimized(struct fe_priv *np)
967{
968 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
969 return false;
970 return true;
971}
972
973static int reg_delay(struct net_device *dev, int offset, u32 mask, u32 target,
974 int delay, int delaymax)
975{
976 u8 __iomem *base = get_hwbase(dev);
977
978 pci_push(base);
979 do {
980 udelay(delay);
981 delaymax -= delay;
982 if (delaymax < 0)
983 return 1;
984 } while ((readl(base + offset) & mask) != target);
985 return 0;
986}
987
988#define NV_SETUP_RX_RING 0x01
989#define NV_SETUP_TX_RING 0x02
990
991static inline u32 dma_low(dma_addr_t addr)
992{
993 return addr;
994}
995
996static inline u32 dma_high(dma_addr_t addr)
997{
998 return addr>>31>>1; /* 0 if 32bit, shift down by 32 if 64bit */
999}
1000
1001static void setup_hw_rings(struct net_device *dev, int rxtx_flags)
1002{
1003 struct fe_priv *np = get_nvpriv(dev);
1004 u8 __iomem *base = get_hwbase(dev);
1005
1006 if (!nv_optimized(np)) {
1007 if (rxtx_flags & NV_SETUP_RX_RING)
1008 writel(dma_low(np->ring_addr), base + NvRegRxRingPhysAddr);
1009 if (rxtx_flags & NV_SETUP_TX_RING)
1010 writel(dma_low(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
1011 } else {
1012 if (rxtx_flags & NV_SETUP_RX_RING) {
1013 writel(dma_low(np->ring_addr), base + NvRegRxRingPhysAddr);
1014 writel(dma_high(np->ring_addr), base + NvRegRxRingPhysAddrHigh);
1015 }
1016 if (rxtx_flags & NV_SETUP_TX_RING) {
1017 writel(dma_low(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddr);
1018 writel(dma_high(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddrHigh);
1019 }
1020 }
1021}
1022
1023static void free_rings(struct net_device *dev)
1024{
1025 struct fe_priv *np = get_nvpriv(dev);
1026
1027 if (!nv_optimized(np)) {
1028 if (np->rx_ring.orig)
1029 pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (np->rx_ring_size + np->tx_ring_size),
1030 np->rx_ring.orig, np->ring_addr);
1031 } else {
1032 if (np->rx_ring.ex)
1033 pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (np->rx_ring_size + np->tx_ring_size),
1034 np->rx_ring.ex, np->ring_addr);
1035 }
1036 kfree(np->rx_skb);
1037 kfree(np->tx_skb);
1038}
1039
1040static int using_multi_irqs(struct net_device *dev)
1041{
1042 struct fe_priv *np = get_nvpriv(dev);
1043
1044 if (!(np->msi_flags & NV_MSI_X_ENABLED) ||
1045 ((np->msi_flags & NV_MSI_X_ENABLED) &&
1046 ((np->msi_flags & NV_MSI_X_VECTORS_MASK) == 0x1)))
1047 return 0;
1048 else
1049 return 1;
1050}
1051
1052static void nv_txrx_gate(struct net_device *dev, bool gate)
1053{
1054 struct fe_priv *np = get_nvpriv(dev);
1055 u8 __iomem *base = get_hwbase(dev);
1056 u32 powerstate;
1057
1058 if (!np->mac_in_use &&
1059 (np->driver_data & DEV_HAS_POWER_CNTRL)) {
1060 powerstate = readl(base + NvRegPowerState2);
1061 if (gate)
1062 powerstate |= NVREG_POWERSTATE2_GATE_CLOCKS;
1063 else
1064 powerstate &= ~NVREG_POWERSTATE2_GATE_CLOCKS;
1065 writel(powerstate, base + NvRegPowerState2);
1066 }
1067}
1068
1069static void nv_enable_irq(struct net_device *dev)
1070{
1071 struct fe_priv *np = get_nvpriv(dev);
1072
1073 if (!using_multi_irqs(dev)) {
1074 if (np->msi_flags & NV_MSI_X_ENABLED)
1075 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
1076 else
1077 enable_irq(np->pci_dev->irq);
1078 } else {
1079 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
1080 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
1081 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
1082 }
1083}
1084
1085static void nv_disable_irq(struct net_device *dev)
1086{
1087 struct fe_priv *np = get_nvpriv(dev);
1088
1089 if (!using_multi_irqs(dev)) {
1090 if (np->msi_flags & NV_MSI_X_ENABLED)
1091 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
1092 else
1093 disable_irq(np->pci_dev->irq);
1094 } else {
1095 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
1096 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
1097 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
1098 }
1099}
1100
1101/* In MSIX mode, a write to irqmask behaves as XOR */
1102static void nv_enable_hw_interrupts(struct net_device *dev, u32 mask)
1103{
1104 u8 __iomem *base = get_hwbase(dev);
1105
1106 writel(mask, base + NvRegIrqMask);
1107}
1108
1109static void nv_disable_hw_interrupts(struct net_device *dev, u32 mask)
1110{
1111 struct fe_priv *np = get_nvpriv(dev);
1112 u8 __iomem *base = get_hwbase(dev);
1113
1114 if (np->msi_flags & NV_MSI_X_ENABLED) {
1115 writel(mask, base + NvRegIrqMask);
1116 } else {
1117 if (np->msi_flags & NV_MSI_ENABLED)
1118 writel(0, base + NvRegMSIIrqMask);
1119 writel(0, base + NvRegIrqMask);
1120 }
1121}
1122
1123static void nv_napi_enable(struct net_device *dev)
1124{
1125 struct fe_priv *np = get_nvpriv(dev);
1126
1127 napi_enable(&np->napi);
1128}
1129
1130static void nv_napi_disable(struct net_device *dev)
1131{
1132 struct fe_priv *np = get_nvpriv(dev);
1133
1134 napi_disable(&np->napi);
1135}
1136
1137#define MII_READ (-1)
1138/* mii_rw: read/write a register on the PHY.
1139 *
1140 * Caller must guarantee serialization
1141 */
1142static int mii_rw(struct net_device *dev, int addr, int miireg, int value)
1143{
1144 u8 __iomem *base = get_hwbase(dev);
1145 u32 reg;
1146 int retval;
1147
1148 writel(NVREG_MIISTAT_MASK_RW, base + NvRegMIIStatus);
1149
1150 reg = readl(base + NvRegMIIControl);
1151 if (reg & NVREG_MIICTL_INUSE) {
1152 writel(NVREG_MIICTL_INUSE, base + NvRegMIIControl);
1153 udelay(NV_MIIBUSY_DELAY);
1154 }
1155
1156 reg = (addr << NVREG_MIICTL_ADDRSHIFT) | miireg;
1157 if (value != MII_READ) {
1158 writel(value, base + NvRegMIIData);
1159 reg |= NVREG_MIICTL_WRITE;
1160 }
1161 writel(reg, base + NvRegMIIControl);
1162
1163 if (reg_delay(dev, NvRegMIIControl, NVREG_MIICTL_INUSE, 0,
1164 NV_MIIPHY_DELAY, NV_MIIPHY_DELAYMAX)) {
1165 retval = -1;
1166 } else if (value != MII_READ) {
1167 /* it was a write operation - fewer failures are detectable */
1168 retval = 0;
1169 } else if (readl(base + NvRegMIIStatus) & NVREG_MIISTAT_ERROR) {
1170 retval = -1;
1171 } else {
1172 retval = readl(base + NvRegMIIData);
1173 }
1174
1175 return retval;
1176}
1177
1178static int phy_reset(struct net_device *dev, u32 bmcr_setup)
1179{
1180 struct fe_priv *np = netdev_priv(dev);
1181 u32 miicontrol;
1182 unsigned int tries = 0;
1183
1184 miicontrol = BMCR_RESET | bmcr_setup;
1185 if (mii_rw(dev, np->phyaddr, MII_BMCR, miicontrol))
1186 return -1;
1187
1188 /* wait for 500ms */
1189 msleep(500);
1190
1191 /* must wait till reset is deasserted */
1192 while (miicontrol & BMCR_RESET) {
1193 usleep_range(10000, 20000);
1194 miicontrol = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
1195 /* FIXME: 100 tries seem excessive */
1196 if (tries++ > 100)
1197 return -1;
1198 }
1199 return 0;
1200}
1201
1202static int init_realtek_8211b(struct net_device *dev, struct fe_priv *np)
1203{
1204 static const struct {
1205 int reg;
1206 int init;
1207 } ri[] = {
1208 { PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1 },
1209 { PHY_REALTEK_INIT_REG2, PHY_REALTEK_INIT2 },
1210 { PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3 },
1211 { PHY_REALTEK_INIT_REG3, PHY_REALTEK_INIT4 },
1212 { PHY_REALTEK_INIT_REG4, PHY_REALTEK_INIT5 },
1213 { PHY_REALTEK_INIT_REG5, PHY_REALTEK_INIT6 },
1214 { PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1 },
1215 };
1216 int i;
1217
1218 for (i = 0; i < ARRAY_SIZE(ri); i++) {
1219 if (mii_rw(dev, np->phyaddr, ri[i].reg, ri[i].init))
1220 return PHY_ERROR;
1221 }
1222
1223 return 0;
1224}
1225
1226static int init_realtek_8211c(struct net_device *dev, struct fe_priv *np)
1227{
1228 u32 reg;
1229 u8 __iomem *base = get_hwbase(dev);
1230 u32 powerstate = readl(base + NvRegPowerState2);
1231
1232 /* need to perform hw phy reset */
1233 powerstate |= NVREG_POWERSTATE2_PHY_RESET;
1234 writel(powerstate, base + NvRegPowerState2);
1235 msleep(25);
1236
1237 powerstate &= ~NVREG_POWERSTATE2_PHY_RESET;
1238 writel(powerstate, base + NvRegPowerState2);
1239 msleep(25);
1240
1241 reg = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG6, MII_READ);
1242 reg |= PHY_REALTEK_INIT9;
1243 if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG6, reg))
1244 return PHY_ERROR;
1245 if (mii_rw(dev, np->phyaddr,
1246 PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT10))
1247 return PHY_ERROR;
1248 reg = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG7, MII_READ);
1249 if (!(reg & PHY_REALTEK_INIT11)) {
1250 reg |= PHY_REALTEK_INIT11;
1251 if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG7, reg))
1252 return PHY_ERROR;
1253 }
1254 if (mii_rw(dev, np->phyaddr,
1255 PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1))
1256 return PHY_ERROR;
1257
1258 return 0;
1259}
1260
1261static int init_realtek_8201(struct net_device *dev, struct fe_priv *np)
1262{
1263 u32 phy_reserved;
1264
1265 if (np->driver_data & DEV_NEED_PHY_INIT_FIX) {
1266 phy_reserved = mii_rw(dev, np->phyaddr,
1267 PHY_REALTEK_INIT_REG6, MII_READ);
1268 phy_reserved |= PHY_REALTEK_INIT7;
1269 if (mii_rw(dev, np->phyaddr,
1270 PHY_REALTEK_INIT_REG6, phy_reserved))
1271 return PHY_ERROR;
1272 }
1273
1274 return 0;
1275}
1276
1277static int init_realtek_8201_cross(struct net_device *dev, struct fe_priv *np)
1278{
1279 u32 phy_reserved;
1280
1281 if (phy_cross == NV_CROSSOVER_DETECTION_DISABLED) {
1282 if (mii_rw(dev, np->phyaddr,
1283 PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3))
1284 return PHY_ERROR;
1285 phy_reserved = mii_rw(dev, np->phyaddr,
1286 PHY_REALTEK_INIT_REG2, MII_READ);
1287 phy_reserved &= ~PHY_REALTEK_INIT_MSK1;
1288 phy_reserved |= PHY_REALTEK_INIT3;
1289 if (mii_rw(dev, np->phyaddr,
1290 PHY_REALTEK_INIT_REG2, phy_reserved))
1291 return PHY_ERROR;
1292 if (mii_rw(dev, np->phyaddr,
1293 PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1))
1294 return PHY_ERROR;
1295 }
1296
1297 return 0;
1298}
1299
1300static int init_cicada(struct net_device *dev, struct fe_priv *np,
1301 u32 phyinterface)
1302{
1303 u32 phy_reserved;
1304
1305 if (phyinterface & PHY_RGMII) {
1306 phy_reserved = mii_rw(dev, np->phyaddr, MII_RESV1, MII_READ);
1307 phy_reserved &= ~(PHY_CICADA_INIT1 | PHY_CICADA_INIT2);
1308 phy_reserved |= (PHY_CICADA_INIT3 | PHY_CICADA_INIT4);
1309 if (mii_rw(dev, np->phyaddr, MII_RESV1, phy_reserved))
1310 return PHY_ERROR;
1311 phy_reserved = mii_rw(dev, np->phyaddr, MII_NCONFIG, MII_READ);
1312 phy_reserved |= PHY_CICADA_INIT5;
1313 if (mii_rw(dev, np->phyaddr, MII_NCONFIG, phy_reserved))
1314 return PHY_ERROR;
1315 }
1316 phy_reserved = mii_rw(dev, np->phyaddr, MII_SREVISION, MII_READ);
1317 phy_reserved |= PHY_CICADA_INIT6;
1318 if (mii_rw(dev, np->phyaddr, MII_SREVISION, phy_reserved))
1319 return PHY_ERROR;
1320
1321 return 0;
1322}
1323
1324static int init_vitesse(struct net_device *dev, struct fe_priv *np)
1325{
1326 u32 phy_reserved;
1327
1328 if (mii_rw(dev, np->phyaddr,
1329 PHY_VITESSE_INIT_REG1, PHY_VITESSE_INIT1))
1330 return PHY_ERROR;
1331 if (mii_rw(dev, np->phyaddr,
1332 PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT2))
1333 return PHY_ERROR;
1334 phy_reserved = mii_rw(dev, np->phyaddr,
1335 PHY_VITESSE_INIT_REG4, MII_READ);
1336 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, phy_reserved))
1337 return PHY_ERROR;
1338 phy_reserved = mii_rw(dev, np->phyaddr,
1339 PHY_VITESSE_INIT_REG3, MII_READ);
1340 phy_reserved &= ~PHY_VITESSE_INIT_MSK1;
1341 phy_reserved |= PHY_VITESSE_INIT3;
1342 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, phy_reserved))
1343 return PHY_ERROR;
1344 if (mii_rw(dev, np->phyaddr,
1345 PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT4))
1346 return PHY_ERROR;
1347 if (mii_rw(dev, np->phyaddr,
1348 PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT5))
1349 return PHY_ERROR;
1350 phy_reserved = mii_rw(dev, np->phyaddr,
1351 PHY_VITESSE_INIT_REG4, MII_READ);
1352 phy_reserved &= ~PHY_VITESSE_INIT_MSK1;
1353 phy_reserved |= PHY_VITESSE_INIT3;
1354 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, phy_reserved))
1355 return PHY_ERROR;
1356 phy_reserved = mii_rw(dev, np->phyaddr,
1357 PHY_VITESSE_INIT_REG3, MII_READ);
1358 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, phy_reserved))
1359 return PHY_ERROR;
1360 if (mii_rw(dev, np->phyaddr,
1361 PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT6))
1362 return PHY_ERROR;
1363 if (mii_rw(dev, np->phyaddr,
1364 PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT7))
1365 return PHY_ERROR;
1366 phy_reserved = mii_rw(dev, np->phyaddr,
1367 PHY_VITESSE_INIT_REG4, MII_READ);
1368 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, phy_reserved))
1369 return PHY_ERROR;
1370 phy_reserved = mii_rw(dev, np->phyaddr,
1371 PHY_VITESSE_INIT_REG3, MII_READ);
1372 phy_reserved &= ~PHY_VITESSE_INIT_MSK2;
1373 phy_reserved |= PHY_VITESSE_INIT8;
1374 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, phy_reserved))
1375 return PHY_ERROR;
1376 if (mii_rw(dev, np->phyaddr,
1377 PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT9))
1378 return PHY_ERROR;
1379 if (mii_rw(dev, np->phyaddr,
1380 PHY_VITESSE_INIT_REG1, PHY_VITESSE_INIT10))
1381 return PHY_ERROR;
1382
1383 return 0;
1384}
1385
1386static int phy_init(struct net_device *dev)
1387{
1388 struct fe_priv *np = get_nvpriv(dev);
1389 u8 __iomem *base = get_hwbase(dev);
1390 u32 phyinterface;
1391 u32 mii_status, mii_control, mii_control_1000, reg;
1392
1393 /* phy errata for E3016 phy */
1394 if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
1395 reg = mii_rw(dev, np->phyaddr, MII_NCONFIG, MII_READ);
1396 reg &= ~PHY_MARVELL_E3016_INITMASK;
1397 if (mii_rw(dev, np->phyaddr, MII_NCONFIG, reg)) {
1398 netdev_info(dev, "%s: phy write to errata reg failed\n",
1399 pci_name(np->pci_dev));
1400 return PHY_ERROR;
1401 }
1402 }
1403 if (np->phy_oui == PHY_OUI_REALTEK) {
1404 if (np->phy_model == PHY_MODEL_REALTEK_8211 &&
1405 np->phy_rev == PHY_REV_REALTEK_8211B) {
1406 if (init_realtek_8211b(dev, np)) {
1407 netdev_info(dev, "%s: phy init failed\n",
1408 pci_name(np->pci_dev));
1409 return PHY_ERROR;
1410 }
1411 } else if (np->phy_model == PHY_MODEL_REALTEK_8211 &&
1412 np->phy_rev == PHY_REV_REALTEK_8211C) {
1413 if (init_realtek_8211c(dev, np)) {
1414 netdev_info(dev, "%s: phy init failed\n",
1415 pci_name(np->pci_dev));
1416 return PHY_ERROR;
1417 }
1418 } else if (np->phy_model == PHY_MODEL_REALTEK_8201) {
1419 if (init_realtek_8201(dev, np)) {
1420 netdev_info(dev, "%s: phy init failed\n",
1421 pci_name(np->pci_dev));
1422 return PHY_ERROR;
1423 }
1424 }
1425 }
1426
1427 /* set advertise register */
1428 reg = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
1429 reg |= (ADVERTISE_10HALF | ADVERTISE_10FULL |
1430 ADVERTISE_100HALF | ADVERTISE_100FULL |
1431 ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP);
1432 if (mii_rw(dev, np->phyaddr, MII_ADVERTISE, reg)) {
1433 netdev_info(dev, "%s: phy write to advertise failed\n",
1434 pci_name(np->pci_dev));
1435 return PHY_ERROR;
1436 }
1437
1438 /* get phy interface type */
1439 phyinterface = readl(base + NvRegPhyInterface);
1440
1441 /* see if gigabit phy */
1442 mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
1443 if (mii_status & PHY_GIGABIT) {
1444 np->gigabit = PHY_GIGABIT;
1445 mii_control_1000 = mii_rw(dev, np->phyaddr,
1446 MII_CTRL1000, MII_READ);
1447 mii_control_1000 &= ~ADVERTISE_1000HALF;
1448 if (phyinterface & PHY_RGMII)
1449 mii_control_1000 |= ADVERTISE_1000FULL;
1450 else
1451 mii_control_1000 &= ~ADVERTISE_1000FULL;
1452
1453 if (mii_rw(dev, np->phyaddr, MII_CTRL1000, mii_control_1000)) {
1454 netdev_info(dev, "%s: phy init failed\n",
1455 pci_name(np->pci_dev));
1456 return PHY_ERROR;
1457 }
1458 } else
1459 np->gigabit = 0;
1460
1461 mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
1462 mii_control |= BMCR_ANENABLE;
1463
1464 if (np->phy_oui == PHY_OUI_REALTEK &&
1465 np->phy_model == PHY_MODEL_REALTEK_8211 &&
1466 np->phy_rev == PHY_REV_REALTEK_8211C) {
1467 /* start autoneg since we already performed hw reset above */
1468 mii_control |= BMCR_ANRESTART;
1469 if (mii_rw(dev, np->phyaddr, MII_BMCR, mii_control)) {
1470 netdev_info(dev, "%s: phy init failed\n",
1471 pci_name(np->pci_dev));
1472 return PHY_ERROR;
1473 }
1474 } else {
1475 /* reset the phy
1476 * (certain phys need bmcr to be setup with reset)
1477 */
1478 if (phy_reset(dev, mii_control)) {
1479 netdev_info(dev, "%s: phy reset failed\n",
1480 pci_name(np->pci_dev));
1481 return PHY_ERROR;
1482 }
1483 }
1484
1485 /* phy vendor specific configuration */
1486 if ((np->phy_oui == PHY_OUI_CICADA)) {
1487 if (init_cicada(dev, np, phyinterface)) {
1488 netdev_info(dev, "%s: phy init failed\n",
1489 pci_name(np->pci_dev));
1490 return PHY_ERROR;
1491 }
1492 } else if (np->phy_oui == PHY_OUI_VITESSE) {
1493 if (init_vitesse(dev, np)) {
1494 netdev_info(dev, "%s: phy init failed\n",
1495 pci_name(np->pci_dev));
1496 return PHY_ERROR;
1497 }
1498 } else if (np->phy_oui == PHY_OUI_REALTEK) {
1499 if (np->phy_model == PHY_MODEL_REALTEK_8211 &&
1500 np->phy_rev == PHY_REV_REALTEK_8211B) {
1501 /* reset could have cleared these out, set them back */
1502 if (init_realtek_8211b(dev, np)) {
1503 netdev_info(dev, "%s: phy init failed\n",
1504 pci_name(np->pci_dev));
1505 return PHY_ERROR;
1506 }
1507 } else if (np->phy_model == PHY_MODEL_REALTEK_8201) {
1508 if (init_realtek_8201(dev, np) ||
1509 init_realtek_8201_cross(dev, np)) {
1510 netdev_info(dev, "%s: phy init failed\n",
1511 pci_name(np->pci_dev));
1512 return PHY_ERROR;
1513 }
1514 }
1515 }
1516
1517 /* some phys clear out pause advertisement on reset, set it back */
1518 mii_rw(dev, np->phyaddr, MII_ADVERTISE, reg);
1519
1520 /* restart auto negotiation, power down phy */
1521 mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
1522 mii_control |= (BMCR_ANRESTART | BMCR_ANENABLE);
1523 if (phy_power_down)
1524 mii_control |= BMCR_PDOWN;
1525 if (mii_rw(dev, np->phyaddr, MII_BMCR, mii_control))
1526 return PHY_ERROR;
1527
1528 return 0;
1529}
1530
1531static void nv_start_rx(struct net_device *dev)
1532{
1533 struct fe_priv *np = netdev_priv(dev);
1534 u8 __iomem *base = get_hwbase(dev);
1535 u32 rx_ctrl = readl(base + NvRegReceiverControl);
1536
1537 /* Already running? Stop it. */
1538 if ((readl(base + NvRegReceiverControl) & NVREG_RCVCTL_START) && !np->mac_in_use) {
1539 rx_ctrl &= ~NVREG_RCVCTL_START;
1540 writel(rx_ctrl, base + NvRegReceiverControl);
1541 pci_push(base);
1542 }
1543 writel(np->linkspeed, base + NvRegLinkSpeed);
1544 pci_push(base);
1545 rx_ctrl |= NVREG_RCVCTL_START;
1546 if (np->mac_in_use)
1547 rx_ctrl &= ~NVREG_RCVCTL_RX_PATH_EN;
1548 writel(rx_ctrl, base + NvRegReceiverControl);
1549 pci_push(base);
1550}
1551
1552static void nv_stop_rx(struct net_device *dev)
1553{
1554 struct fe_priv *np = netdev_priv(dev);
1555 u8 __iomem *base = get_hwbase(dev);
1556 u32 rx_ctrl = readl(base + NvRegReceiverControl);
1557
1558 if (!np->mac_in_use)
1559 rx_ctrl &= ~NVREG_RCVCTL_START;
1560 else
1561 rx_ctrl |= NVREG_RCVCTL_RX_PATH_EN;
1562 writel(rx_ctrl, base + NvRegReceiverControl);
1563 if (reg_delay(dev, NvRegReceiverStatus, NVREG_RCVSTAT_BUSY, 0,
1564 NV_RXSTOP_DELAY1, NV_RXSTOP_DELAY1MAX))
1565 netdev_info(dev, "%s: ReceiverStatus remained busy\n",
1566 __func__);
1567
1568 udelay(NV_RXSTOP_DELAY2);
1569 if (!np->mac_in_use)
1570 writel(0, base + NvRegLinkSpeed);
1571}
1572
1573static void nv_start_tx(struct net_device *dev)
1574{
1575 struct fe_priv *np = netdev_priv(dev);
1576 u8 __iomem *base = get_hwbase(dev);
1577 u32 tx_ctrl = readl(base + NvRegTransmitterControl);
1578
1579 tx_ctrl |= NVREG_XMITCTL_START;
1580 if (np->mac_in_use)
1581 tx_ctrl &= ~NVREG_XMITCTL_TX_PATH_EN;
1582 writel(tx_ctrl, base + NvRegTransmitterControl);
1583 pci_push(base);
1584}
1585
1586static void nv_stop_tx(struct net_device *dev)
1587{
1588 struct fe_priv *np = netdev_priv(dev);
1589 u8 __iomem *base = get_hwbase(dev);
1590 u32 tx_ctrl = readl(base + NvRegTransmitterControl);
1591
1592 if (!np->mac_in_use)
1593 tx_ctrl &= ~NVREG_XMITCTL_START;
1594 else
1595 tx_ctrl |= NVREG_XMITCTL_TX_PATH_EN;
1596 writel(tx_ctrl, base + NvRegTransmitterControl);
1597 if (reg_delay(dev, NvRegTransmitterStatus, NVREG_XMITSTAT_BUSY, 0,
1598 NV_TXSTOP_DELAY1, NV_TXSTOP_DELAY1MAX))
1599 netdev_info(dev, "%s: TransmitterStatus remained busy\n",
1600 __func__);
1601
1602 udelay(NV_TXSTOP_DELAY2);
1603 if (!np->mac_in_use)
1604 writel(readl(base + NvRegTransmitPoll) & NVREG_TRANSMITPOLL_MAC_ADDR_REV,
1605 base + NvRegTransmitPoll);
1606}
1607
1608static void nv_start_rxtx(struct net_device *dev)
1609{
1610 nv_start_rx(dev);
1611 nv_start_tx(dev);
1612}
1613
1614static void nv_stop_rxtx(struct net_device *dev)
1615{
1616 nv_stop_rx(dev);
1617 nv_stop_tx(dev);
1618}
1619
1620static void nv_txrx_reset(struct net_device *dev)
1621{
1622 struct fe_priv *np = netdev_priv(dev);
1623 u8 __iomem *base = get_hwbase(dev);
1624
1625 writel(NVREG_TXRXCTL_BIT2 | NVREG_TXRXCTL_RESET | np->txrxctl_bits, base + NvRegTxRxControl);
1626 pci_push(base);
1627 udelay(NV_TXRX_RESET_DELAY);
1628 writel(NVREG_TXRXCTL_BIT2 | np->txrxctl_bits, base + NvRegTxRxControl);
1629 pci_push(base);
1630}
1631
1632static void nv_mac_reset(struct net_device *dev)
1633{
1634 struct fe_priv *np = netdev_priv(dev);
1635 u8 __iomem *base = get_hwbase(dev);
1636 u32 temp1, temp2, temp3;
1637
1638 writel(NVREG_TXRXCTL_BIT2 | NVREG_TXRXCTL_RESET | np->txrxctl_bits, base + NvRegTxRxControl);
1639 pci_push(base);
1640
1641 /* save registers since they will be cleared on reset */
1642 temp1 = readl(base + NvRegMacAddrA);
1643 temp2 = readl(base + NvRegMacAddrB);
1644 temp3 = readl(base + NvRegTransmitPoll);
1645
1646 writel(NVREG_MAC_RESET_ASSERT, base + NvRegMacReset);
1647 pci_push(base);
1648 udelay(NV_MAC_RESET_DELAY);
1649 writel(0, base + NvRegMacReset);
1650 pci_push(base);
1651 udelay(NV_MAC_RESET_DELAY);
1652
1653 /* restore saved registers */
1654 writel(temp1, base + NvRegMacAddrA);
1655 writel(temp2, base + NvRegMacAddrB);
1656 writel(temp3, base + NvRegTransmitPoll);
1657
1658 writel(NVREG_TXRXCTL_BIT2 | np->txrxctl_bits, base + NvRegTxRxControl);
1659 pci_push(base);
1660}
1661
1662/* Caller must appropriately lock netdev_priv(dev)->hwstats_lock */
1663static void nv_update_stats(struct net_device *dev)
1664{
1665 struct fe_priv *np = netdev_priv(dev);
1666 u8 __iomem *base = get_hwbase(dev);
1667
1668 /* If it happens that this is run in top-half context, then
1669 * replace the spin_lock of hwstats_lock with
1670 * spin_lock_irqsave() in calling functions. */
1671 WARN_ONCE(in_irq(), "forcedeth: estats spin_lock(_bh) from top-half");
1672 assert_spin_locked(&np->hwstats_lock);
1673
1674 /* query hardware */
1675 np->estats.tx_bytes += readl(base + NvRegTxCnt);
1676 np->estats.tx_zero_rexmt += readl(base + NvRegTxZeroReXmt);
1677 np->estats.tx_one_rexmt += readl(base + NvRegTxOneReXmt);
1678 np->estats.tx_many_rexmt += readl(base + NvRegTxManyReXmt);
1679 np->estats.tx_late_collision += readl(base + NvRegTxLateCol);
1680 np->estats.tx_fifo_errors += readl(base + NvRegTxUnderflow);
1681 np->estats.tx_carrier_errors += readl(base + NvRegTxLossCarrier);
1682 np->estats.tx_excess_deferral += readl(base + NvRegTxExcessDef);
1683 np->estats.tx_retry_error += readl(base + NvRegTxRetryErr);
1684 np->estats.rx_frame_error += readl(base + NvRegRxFrameErr);
1685 np->estats.rx_extra_byte += readl(base + NvRegRxExtraByte);
1686 np->estats.rx_late_collision += readl(base + NvRegRxLateCol);
1687 np->estats.rx_runt += readl(base + NvRegRxRunt);
1688 np->estats.rx_frame_too_long += readl(base + NvRegRxFrameTooLong);
1689 np->estats.rx_over_errors += readl(base + NvRegRxOverflow);
1690 np->estats.rx_crc_errors += readl(base + NvRegRxFCSErr);
1691 np->estats.rx_frame_align_error += readl(base + NvRegRxFrameAlignErr);
1692 np->estats.rx_length_error += readl(base + NvRegRxLenErr);
1693 np->estats.rx_unicast += readl(base + NvRegRxUnicast);
1694 np->estats.rx_multicast += readl(base + NvRegRxMulticast);
1695 np->estats.rx_broadcast += readl(base + NvRegRxBroadcast);
1696 np->estats.rx_packets =
1697 np->estats.rx_unicast +
1698 np->estats.rx_multicast +
1699 np->estats.rx_broadcast;
1700 np->estats.rx_errors_total =
1701 np->estats.rx_crc_errors +
1702 np->estats.rx_over_errors +
1703 np->estats.rx_frame_error +
1704 (np->estats.rx_frame_align_error - np->estats.rx_extra_byte) +
1705 np->estats.rx_late_collision +
1706 np->estats.rx_runt +
1707 np->estats.rx_frame_too_long;
1708 np->estats.tx_errors_total =
1709 np->estats.tx_late_collision +
1710 np->estats.tx_fifo_errors +
1711 np->estats.tx_carrier_errors +
1712 np->estats.tx_excess_deferral +
1713 np->estats.tx_retry_error;
1714
1715 if (np->driver_data & DEV_HAS_STATISTICS_V2) {
1716 np->estats.tx_deferral += readl(base + NvRegTxDef);
1717 np->estats.tx_packets += readl(base + NvRegTxFrame);
1718 np->estats.rx_bytes += readl(base + NvRegRxCnt);
1719 np->estats.tx_pause += readl(base + NvRegTxPause);
1720 np->estats.rx_pause += readl(base + NvRegRxPause);
1721 np->estats.rx_drop_frame += readl(base + NvRegRxDropFrame);
1722 np->estats.rx_errors_total += np->estats.rx_drop_frame;
1723 }
1724
1725 if (np->driver_data & DEV_HAS_STATISTICS_V3) {
1726 np->estats.tx_unicast += readl(base + NvRegTxUnicast);
1727 np->estats.tx_multicast += readl(base + NvRegTxMulticast);
1728 np->estats.tx_broadcast += readl(base + NvRegTxBroadcast);
1729 }
1730}
1731
1732/*
1733 * nv_get_stats64: dev->ndo_get_stats64 function
1734 * Get latest stats value from the nic.
1735 * Called with read_lock(&dev_base_lock) held for read -
1736 * only synchronized against unregister_netdevice.
1737 */
1738static struct rtnl_link_stats64*
1739nv_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *storage)
1740 __acquires(&netdev_priv(dev)->hwstats_lock)
1741 __releases(&netdev_priv(dev)->hwstats_lock)
1742{
1743 struct fe_priv *np = netdev_priv(dev);
1744 unsigned int syncp_start;
1745
1746 /*
1747 * Note: because HW stats are not always available and for
1748 * consistency reasons, the following ifconfig stats are
1749 * managed by software: rx_bytes, tx_bytes, rx_packets and
1750 * tx_packets. The related hardware stats reported by ethtool
1751 * should be equivalent to these ifconfig stats, with 4
1752 * additional bytes per packet (Ethernet FCS CRC), except for
1753 * tx_packets when TSO kicks in.
1754 */
1755
1756 /* software stats */
1757 do {
1758 syncp_start = u64_stats_fetch_begin_bh(&np->swstats_rx_syncp);
1759 storage->rx_packets = np->stat_rx_packets;
1760 storage->rx_bytes = np->stat_rx_bytes;
1761 storage->rx_dropped = np->stat_rx_dropped;
1762 storage->rx_missed_errors = np->stat_rx_missed_errors;
1763 } while (u64_stats_fetch_retry_bh(&np->swstats_rx_syncp, syncp_start));
1764
1765 do {
1766 syncp_start = u64_stats_fetch_begin_bh(&np->swstats_tx_syncp);
1767 storage->tx_packets = np->stat_tx_packets;
1768 storage->tx_bytes = np->stat_tx_bytes;
1769 storage->tx_dropped = np->stat_tx_dropped;
1770 } while (u64_stats_fetch_retry_bh(&np->swstats_tx_syncp, syncp_start));
1771
1772 /* If the nic supports hw counters then retrieve latest values */
1773 if (np->driver_data & DEV_HAS_STATISTICS_V123) {
1774 spin_lock_bh(&np->hwstats_lock);
1775
1776 nv_update_stats(dev);
1777
1778 /* generic stats */
1779 storage->rx_errors = np->estats.rx_errors_total;
1780 storage->tx_errors = np->estats.tx_errors_total;
1781
1782 /* meaningful only when NIC supports stats v3 */
1783 storage->multicast = np->estats.rx_multicast;
1784
1785 /* detailed rx_errors */
1786 storage->rx_length_errors = np->estats.rx_length_error;
1787 storage->rx_over_errors = np->estats.rx_over_errors;
1788 storage->rx_crc_errors = np->estats.rx_crc_errors;
1789 storage->rx_frame_errors = np->estats.rx_frame_align_error;
1790 storage->rx_fifo_errors = np->estats.rx_drop_frame;
1791
1792 /* detailed tx_errors */
1793 storage->tx_carrier_errors = np->estats.tx_carrier_errors;
1794 storage->tx_fifo_errors = np->estats.tx_fifo_errors;
1795
1796 spin_unlock_bh(&np->hwstats_lock);
1797 }
1798
1799 return storage;
1800}
1801
1802/*
1803 * nv_alloc_rx: fill rx ring entries.
1804 * Return 1 if the allocations for the skbs failed and the
1805 * rx engine is without Available descriptors
1806 */
1807static int nv_alloc_rx(struct net_device *dev)
1808{
1809 struct fe_priv *np = netdev_priv(dev);
1810 struct ring_desc *less_rx;
1811
1812 less_rx = np->get_rx.orig;
1813 if (less_rx-- == np->first_rx.orig)
1814 less_rx = np->last_rx.orig;
1815
1816 while (np->put_rx.orig != less_rx) {
1817 struct sk_buff *skb = netdev_alloc_skb(dev, np->rx_buf_sz + NV_RX_ALLOC_PAD);
1818 if (skb) {
1819 np->put_rx_ctx->skb = skb;
1820 np->put_rx_ctx->dma = pci_map_single(np->pci_dev,
1821 skb->data,
1822 skb_tailroom(skb),
1823 PCI_DMA_FROMDEVICE);
1824 np->put_rx_ctx->dma_len = skb_tailroom(skb);
1825 np->put_rx.orig->buf = cpu_to_le32(np->put_rx_ctx->dma);
1826 wmb();
1827 np->put_rx.orig->flaglen = cpu_to_le32(np->rx_buf_sz | NV_RX_AVAIL);
1828 if (unlikely(np->put_rx.orig++ == np->last_rx.orig))
1829 np->put_rx.orig = np->first_rx.orig;
1830 if (unlikely(np->put_rx_ctx++ == np->last_rx_ctx))
1831 np->put_rx_ctx = np->first_rx_ctx;
1832 } else {
1833 u64_stats_update_begin(&np->swstats_rx_syncp);
1834 np->stat_rx_dropped++;
1835 u64_stats_update_end(&np->swstats_rx_syncp);
1836 return 1;
1837 }
1838 }
1839 return 0;
1840}
1841
1842static int nv_alloc_rx_optimized(struct net_device *dev)
1843{
1844 struct fe_priv *np = netdev_priv(dev);
1845 struct ring_desc_ex *less_rx;
1846
1847 less_rx = np->get_rx.ex;
1848 if (less_rx-- == np->first_rx.ex)
1849 less_rx = np->last_rx.ex;
1850
1851 while (np->put_rx.ex != less_rx) {
1852 struct sk_buff *skb = netdev_alloc_skb(dev, np->rx_buf_sz + NV_RX_ALLOC_PAD);
1853 if (skb) {
1854 np->put_rx_ctx->skb = skb;
1855 np->put_rx_ctx->dma = pci_map_single(np->pci_dev,
1856 skb->data,
1857 skb_tailroom(skb),
1858 PCI_DMA_FROMDEVICE);
1859 np->put_rx_ctx->dma_len = skb_tailroom(skb);
1860 np->put_rx.ex->bufhigh = cpu_to_le32(dma_high(np->put_rx_ctx->dma));
1861 np->put_rx.ex->buflow = cpu_to_le32(dma_low(np->put_rx_ctx->dma));
1862 wmb();
1863 np->put_rx.ex->flaglen = cpu_to_le32(np->rx_buf_sz | NV_RX2_AVAIL);
1864 if (unlikely(np->put_rx.ex++ == np->last_rx.ex))
1865 np->put_rx.ex = np->first_rx.ex;
1866 if (unlikely(np->put_rx_ctx++ == np->last_rx_ctx))
1867 np->put_rx_ctx = np->first_rx_ctx;
1868 } else {
1869 u64_stats_update_begin(&np->swstats_rx_syncp);
1870 np->stat_rx_dropped++;
1871 u64_stats_update_end(&np->swstats_rx_syncp);
1872 return 1;
1873 }
1874 }
1875 return 0;
1876}
1877
1878/* If rx bufs are exhausted called after 50ms to attempt to refresh */
1879static void nv_do_rx_refill(unsigned long data)
1880{
1881 struct net_device *dev = (struct net_device *) data;
1882 struct fe_priv *np = netdev_priv(dev);
1883
1884 /* Just reschedule NAPI rx processing */
1885 napi_schedule(&np->napi);
1886}
1887
1888static void nv_init_rx(struct net_device *dev)
1889{
1890 struct fe_priv *np = netdev_priv(dev);
1891 int i;
1892
1893 np->get_rx = np->put_rx = np->first_rx = np->rx_ring;
1894
1895 if (!nv_optimized(np))
1896 np->last_rx.orig = &np->rx_ring.orig[np->rx_ring_size-1];
1897 else
1898 np->last_rx.ex = &np->rx_ring.ex[np->rx_ring_size-1];
1899 np->get_rx_ctx = np->put_rx_ctx = np->first_rx_ctx = np->rx_skb;
1900 np->last_rx_ctx = &np->rx_skb[np->rx_ring_size-1];
1901
1902 for (i = 0; i < np->rx_ring_size; i++) {
1903 if (!nv_optimized(np)) {
1904 np->rx_ring.orig[i].flaglen = 0;
1905 np->rx_ring.orig[i].buf = 0;
1906 } else {
1907 np->rx_ring.ex[i].flaglen = 0;
1908 np->rx_ring.ex[i].txvlan = 0;
1909 np->rx_ring.ex[i].bufhigh = 0;
1910 np->rx_ring.ex[i].buflow = 0;
1911 }
1912 np->rx_skb[i].skb = NULL;
1913 np->rx_skb[i].dma = 0;
1914 }
1915}
1916
1917static void nv_init_tx(struct net_device *dev)
1918{
1919 struct fe_priv *np = netdev_priv(dev);
1920 int i;
1921
1922 np->get_tx = np->put_tx = np->first_tx = np->tx_ring;
1923
1924 if (!nv_optimized(np))
1925 np->last_tx.orig = &np->tx_ring.orig[np->tx_ring_size-1];
1926 else
1927 np->last_tx.ex = &np->tx_ring.ex[np->tx_ring_size-1];
1928 np->get_tx_ctx = np->put_tx_ctx = np->first_tx_ctx = np->tx_skb;
1929 np->last_tx_ctx = &np->tx_skb[np->tx_ring_size-1];
1930 netdev_reset_queue(np->dev);
1931 np->tx_pkts_in_progress = 0;
1932 np->tx_change_owner = NULL;
1933 np->tx_end_flip = NULL;
1934 np->tx_stop = 0;
1935
1936 for (i = 0; i < np->tx_ring_size; i++) {
1937 if (!nv_optimized(np)) {
1938 np->tx_ring.orig[i].flaglen = 0;
1939 np->tx_ring.orig[i].buf = 0;
1940 } else {
1941 np->tx_ring.ex[i].flaglen = 0;
1942 np->tx_ring.ex[i].txvlan = 0;
1943 np->tx_ring.ex[i].bufhigh = 0;
1944 np->tx_ring.ex[i].buflow = 0;
1945 }
1946 np->tx_skb[i].skb = NULL;
1947 np->tx_skb[i].dma = 0;
1948 np->tx_skb[i].dma_len = 0;
1949 np->tx_skb[i].dma_single = 0;
1950 np->tx_skb[i].first_tx_desc = NULL;
1951 np->tx_skb[i].next_tx_ctx = NULL;
1952 }
1953}
1954
1955static int nv_init_ring(struct net_device *dev)
1956{
1957 struct fe_priv *np = netdev_priv(dev);
1958
1959 nv_init_tx(dev);
1960 nv_init_rx(dev);
1961
1962 if (!nv_optimized(np))
1963 return nv_alloc_rx(dev);
1964 else
1965 return nv_alloc_rx_optimized(dev);
1966}
1967
1968static void nv_unmap_txskb(struct fe_priv *np, struct nv_skb_map *tx_skb)
1969{
1970 if (tx_skb->dma) {
1971 if (tx_skb->dma_single)
1972 pci_unmap_single(np->pci_dev, tx_skb->dma,
1973 tx_skb->dma_len,
1974 PCI_DMA_TODEVICE);
1975 else
1976 pci_unmap_page(np->pci_dev, tx_skb->dma,
1977 tx_skb->dma_len,
1978 PCI_DMA_TODEVICE);
1979 tx_skb->dma = 0;
1980 }
1981}
1982
1983static int nv_release_txskb(struct fe_priv *np, struct nv_skb_map *tx_skb)
1984{
1985 nv_unmap_txskb(np, tx_skb);
1986 if (tx_skb->skb) {
1987 dev_kfree_skb_any(tx_skb->skb);
1988 tx_skb->skb = NULL;
1989 return 1;
1990 }
1991 return 0;
1992}
1993
1994static void nv_drain_tx(struct net_device *dev)
1995{
1996 struct fe_priv *np = netdev_priv(dev);
1997 unsigned int i;
1998
1999 for (i = 0; i < np->tx_ring_size; i++) {
2000 if (!nv_optimized(np)) {
2001 np->tx_ring.orig[i].flaglen = 0;
2002 np->tx_ring.orig[i].buf = 0;
2003 } else {
2004 np->tx_ring.ex[i].flaglen = 0;
2005 np->tx_ring.ex[i].txvlan = 0;
2006 np->tx_ring.ex[i].bufhigh = 0;
2007 np->tx_ring.ex[i].buflow = 0;
2008 }
2009 if (nv_release_txskb(np, &np->tx_skb[i])) {
2010 u64_stats_update_begin(&np->swstats_tx_syncp);
2011 np->stat_tx_dropped++;
2012 u64_stats_update_end(&np->swstats_tx_syncp);
2013 }
2014 np->tx_skb[i].dma = 0;
2015 np->tx_skb[i].dma_len = 0;
2016 np->tx_skb[i].dma_single = 0;
2017 np->tx_skb[i].first_tx_desc = NULL;
2018 np->tx_skb[i].next_tx_ctx = NULL;
2019 }
2020 np->tx_pkts_in_progress = 0;
2021 np->tx_change_owner = NULL;
2022 np->tx_end_flip = NULL;
2023}
2024
2025static void nv_drain_rx(struct net_device *dev)
2026{
2027 struct fe_priv *np = netdev_priv(dev);
2028 int i;
2029
2030 for (i = 0; i < np->rx_ring_size; i++) {
2031 if (!nv_optimized(np)) {
2032 np->rx_ring.orig[i].flaglen = 0;
2033 np->rx_ring.orig[i].buf = 0;
2034 } else {
2035 np->rx_ring.ex[i].flaglen = 0;
2036 np->rx_ring.ex[i].txvlan = 0;
2037 np->rx_ring.ex[i].bufhigh = 0;
2038 np->rx_ring.ex[i].buflow = 0;
2039 }
2040 wmb();
2041 if (np->rx_skb[i].skb) {
2042 pci_unmap_single(np->pci_dev, np->rx_skb[i].dma,
2043 (skb_end_pointer(np->rx_skb[i].skb) -
2044 np->rx_skb[i].skb->data),
2045 PCI_DMA_FROMDEVICE);
2046 dev_kfree_skb(np->rx_skb[i].skb);
2047 np->rx_skb[i].skb = NULL;
2048 }
2049 }
2050}
2051
2052static void nv_drain_rxtx(struct net_device *dev)
2053{
2054 nv_drain_tx(dev);
2055 nv_drain_rx(dev);
2056}
2057
2058static inline u32 nv_get_empty_tx_slots(struct fe_priv *np)
2059{
2060 return (u32)(np->tx_ring_size - ((np->tx_ring_size + (np->put_tx_ctx - np->get_tx_ctx)) % np->tx_ring_size));
2061}
2062
2063static void nv_legacybackoff_reseed(struct net_device *dev)
2064{
2065 u8 __iomem *base = get_hwbase(dev);
2066 u32 reg;
2067 u32 low;
2068 int tx_status = 0;
2069
2070 reg = readl(base + NvRegSlotTime) & ~NVREG_SLOTTIME_MASK;
2071 get_random_bytes(&low, sizeof(low));
2072 reg |= low & NVREG_SLOTTIME_MASK;
2073
2074 /* Need to stop tx before change takes effect.
2075 * Caller has already gained np->lock.
2076 */
2077 tx_status = readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_START;
2078 if (tx_status)
2079 nv_stop_tx(dev);
2080 nv_stop_rx(dev);
2081 writel(reg, base + NvRegSlotTime);
2082 if (tx_status)
2083 nv_start_tx(dev);
2084 nv_start_rx(dev);
2085}
2086
2087/* Gear Backoff Seeds */
2088#define BACKOFF_SEEDSET_ROWS 8
2089#define BACKOFF_SEEDSET_LFSRS 15
2090
2091/* Known Good seed sets */
2092static const u32 main_seedset[BACKOFF_SEEDSET_ROWS][BACKOFF_SEEDSET_LFSRS] = {
2093 {145, 155, 165, 175, 185, 196, 235, 245, 255, 265, 275, 285, 660, 690, 874},
2094 {245, 255, 265, 575, 385, 298, 335, 345, 355, 366, 375, 385, 761, 790, 974},
2095 {145, 155, 165, 175, 185, 196, 235, 245, 255, 265, 275, 285, 660, 690, 874},
2096 {245, 255, 265, 575, 385, 298, 335, 345, 355, 366, 375, 386, 761, 790, 974},
2097 {266, 265, 276, 585, 397, 208, 345, 355, 365, 376, 385, 396, 771, 700, 984},
2098 {266, 265, 276, 586, 397, 208, 346, 355, 365, 376, 285, 396, 771, 700, 984},
2099 {366, 365, 376, 686, 497, 308, 447, 455, 466, 476, 485, 496, 871, 800, 84},
2100 {466, 465, 476, 786, 597, 408, 547, 555, 566, 576, 585, 597, 971, 900, 184} };
2101
2102static const u32 gear_seedset[BACKOFF_SEEDSET_ROWS][BACKOFF_SEEDSET_LFSRS] = {
2103 {251, 262, 273, 324, 319, 508, 375, 364, 341, 371, 398, 193, 375, 30, 295},
2104 {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395},
2105 {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 397},
2106 {251, 262, 273, 324, 319, 508, 375, 364, 341, 371, 398, 193, 375, 30, 295},
2107 {251, 262, 273, 324, 319, 508, 375, 364, 341, 371, 398, 193, 375, 30, 295},
2108 {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395},
2109 {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395},
2110 {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395} };
2111
2112static void nv_gear_backoff_reseed(struct net_device *dev)
2113{
2114 u8 __iomem *base = get_hwbase(dev);
2115 u32 miniseed1, miniseed2, miniseed2_reversed, miniseed3, miniseed3_reversed;
2116 u32 temp, seedset, combinedSeed;
2117 int i;
2118
2119 /* Setup seed for free running LFSR */
2120 /* We are going to read the time stamp counter 3 times
2121 and swizzle bits around to increase randomness */
2122 get_random_bytes(&miniseed1, sizeof(miniseed1));
2123 miniseed1 &= 0x0fff;
2124 if (miniseed1 == 0)
2125 miniseed1 = 0xabc;
2126
2127 get_random_bytes(&miniseed2, sizeof(miniseed2));
2128 miniseed2 &= 0x0fff;
2129 if (miniseed2 == 0)
2130 miniseed2 = 0xabc;
2131 miniseed2_reversed =
2132 ((miniseed2 & 0xF00) >> 8) |
2133 (miniseed2 & 0x0F0) |
2134 ((miniseed2 & 0x00F) << 8);
2135
2136 get_random_bytes(&miniseed3, sizeof(miniseed3));
2137 miniseed3 &= 0x0fff;
2138 if (miniseed3 == 0)
2139 miniseed3 = 0xabc;
2140 miniseed3_reversed =
2141 ((miniseed3 & 0xF00) >> 8) |
2142 (miniseed3 & 0x0F0) |
2143 ((miniseed3 & 0x00F) << 8);
2144
2145 combinedSeed = ((miniseed1 ^ miniseed2_reversed) << 12) |
2146 (miniseed2 ^ miniseed3_reversed);
2147
2148 /* Seeds can not be zero */
2149 if ((combinedSeed & NVREG_BKOFFCTRL_SEED_MASK) == 0)
2150 combinedSeed |= 0x08;
2151 if ((combinedSeed & (NVREG_BKOFFCTRL_SEED_MASK << NVREG_BKOFFCTRL_GEAR)) == 0)
2152 combinedSeed |= 0x8000;
2153
2154 /* No need to disable tx here */
2155 temp = NVREG_BKOFFCTRL_DEFAULT | (0 << NVREG_BKOFFCTRL_SELECT);
2156 temp |= combinedSeed & NVREG_BKOFFCTRL_SEED_MASK;
2157 temp |= combinedSeed >> NVREG_BKOFFCTRL_GEAR;
2158 writel(temp, base + NvRegBackOffControl);
2159
2160 /* Setup seeds for all gear LFSRs. */
2161 get_random_bytes(&seedset, sizeof(seedset));
2162 seedset = seedset % BACKOFF_SEEDSET_ROWS;
2163 for (i = 1; i <= BACKOFF_SEEDSET_LFSRS; i++) {
2164 temp = NVREG_BKOFFCTRL_DEFAULT | (i << NVREG_BKOFFCTRL_SELECT);
2165 temp |= main_seedset[seedset][i-1] & 0x3ff;
2166 temp |= ((gear_seedset[seedset][i-1] & 0x3ff) << NVREG_BKOFFCTRL_GEAR);
2167 writel(temp, base + NvRegBackOffControl);
2168 }
2169}
2170
2171/*
2172 * nv_start_xmit: dev->hard_start_xmit function
2173 * Called with netif_tx_lock held.
2174 */
2175static netdev_tx_t nv_start_xmit(struct sk_buff *skb, struct net_device *dev)
2176{
2177 struct fe_priv *np = netdev_priv(dev);
2178 u32 tx_flags = 0;
2179 u32 tx_flags_extra = (np->desc_ver == DESC_VER_1 ? NV_TX_LASTPACKET : NV_TX2_LASTPACKET);
2180 unsigned int fragments = skb_shinfo(skb)->nr_frags;
2181 unsigned int i;
2182 u32 offset = 0;
2183 u32 bcnt;
2184 u32 size = skb_headlen(skb);
2185 u32 entries = (size >> NV_TX2_TSO_MAX_SHIFT) + ((size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
2186 u32 empty_slots;
2187 struct ring_desc *put_tx;
2188 struct ring_desc *start_tx;
2189 struct ring_desc *prev_tx;
2190 struct nv_skb_map *prev_tx_ctx;
2191 unsigned long flags;
2192
2193 /* add fragments to entries count */
2194 for (i = 0; i < fragments; i++) {
2195 u32 frag_size = skb_frag_size(&skb_shinfo(skb)->frags[i]);
2196
2197 entries += (frag_size >> NV_TX2_TSO_MAX_SHIFT) +
2198 ((frag_size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
2199 }
2200
2201 spin_lock_irqsave(&np->lock, flags);
2202 empty_slots = nv_get_empty_tx_slots(np);
2203 if (unlikely(empty_slots <= entries)) {
2204 netif_stop_queue(dev);
2205 np->tx_stop = 1;
2206 spin_unlock_irqrestore(&np->lock, flags);
2207 return NETDEV_TX_BUSY;
2208 }
2209 spin_unlock_irqrestore(&np->lock, flags);
2210
2211 start_tx = put_tx = np->put_tx.orig;
2212
2213 /* setup the header buffer */
2214 do {
2215 prev_tx = put_tx;
2216 prev_tx_ctx = np->put_tx_ctx;
2217 bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
2218 np->put_tx_ctx->dma = pci_map_single(np->pci_dev, skb->data + offset, bcnt,
2219 PCI_DMA_TODEVICE);
2220 np->put_tx_ctx->dma_len = bcnt;
2221 np->put_tx_ctx->dma_single = 1;
2222 put_tx->buf = cpu_to_le32(np->put_tx_ctx->dma);
2223 put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
2224
2225 tx_flags = np->tx_flags;
2226 offset += bcnt;
2227 size -= bcnt;
2228 if (unlikely(put_tx++ == np->last_tx.orig))
2229 put_tx = np->first_tx.orig;
2230 if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
2231 np->put_tx_ctx = np->first_tx_ctx;
2232 } while (size);
2233
2234 /* setup the fragments */
2235 for (i = 0; i < fragments; i++) {
2236 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2237 u32 frag_size = skb_frag_size(frag);
2238 offset = 0;
2239
2240 do {
2241 prev_tx = put_tx;
2242 prev_tx_ctx = np->put_tx_ctx;
2243 bcnt = (frag_size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : frag_size;
2244 np->put_tx_ctx->dma = skb_frag_dma_map(
2245 &np->pci_dev->dev,
2246 frag, offset,
2247 bcnt,
2248 DMA_TO_DEVICE);
2249 np->put_tx_ctx->dma_len = bcnt;
2250 np->put_tx_ctx->dma_single = 0;
2251 put_tx->buf = cpu_to_le32(np->put_tx_ctx->dma);
2252 put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
2253
2254 offset += bcnt;
2255 frag_size -= bcnt;
2256 if (unlikely(put_tx++ == np->last_tx.orig))
2257 put_tx = np->first_tx.orig;
2258 if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
2259 np->put_tx_ctx = np->first_tx_ctx;
2260 } while (frag_size);
2261 }
2262
2263 /* set last fragment flag */
2264 prev_tx->flaglen |= cpu_to_le32(tx_flags_extra);
2265
2266 /* save skb in this slot's context area */
2267 prev_tx_ctx->skb = skb;
2268
2269 if (skb_is_gso(skb))
2270 tx_flags_extra = NV_TX2_TSO | (skb_shinfo(skb)->gso_size << NV_TX2_TSO_SHIFT);
2271 else
2272 tx_flags_extra = skb->ip_summed == CHECKSUM_PARTIAL ?
2273 NV_TX2_CHECKSUM_L3 | NV_TX2_CHECKSUM_L4 : 0;
2274
2275 spin_lock_irqsave(&np->lock, flags);
2276
2277 /* set tx flags */
2278 start_tx->flaglen |= cpu_to_le32(tx_flags | tx_flags_extra);
2279
2280 netdev_sent_queue(np->dev, skb->len);
2281
2282 skb_tx_timestamp(skb);
2283
2284 np->put_tx.orig = put_tx;
2285
2286 spin_unlock_irqrestore(&np->lock, flags);
2287
2288 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
2289 return NETDEV_TX_OK;
2290}
2291
2292static netdev_tx_t nv_start_xmit_optimized(struct sk_buff *skb,
2293 struct net_device *dev)
2294{
2295 struct fe_priv *np = netdev_priv(dev);
2296 u32 tx_flags = 0;
2297 u32 tx_flags_extra;
2298 unsigned int fragments = skb_shinfo(skb)->nr_frags;
2299 unsigned int i;
2300 u32 offset = 0;
2301 u32 bcnt;
2302 u32 size = skb_headlen(skb);
2303 u32 entries = (size >> NV_TX2_TSO_MAX_SHIFT) + ((size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
2304 u32 empty_slots;
2305 struct ring_desc_ex *put_tx;
2306 struct ring_desc_ex *start_tx;
2307 struct ring_desc_ex *prev_tx;
2308 struct nv_skb_map *prev_tx_ctx;
2309 struct nv_skb_map *start_tx_ctx;
2310 unsigned long flags;
2311
2312 /* add fragments to entries count */
2313 for (i = 0; i < fragments; i++) {
2314 u32 frag_size = skb_frag_size(&skb_shinfo(skb)->frags[i]);
2315
2316 entries += (frag_size >> NV_TX2_TSO_MAX_SHIFT) +
2317 ((frag_size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
2318 }
2319
2320 spin_lock_irqsave(&np->lock, flags);
2321 empty_slots = nv_get_empty_tx_slots(np);
2322 if (unlikely(empty_slots <= entries)) {
2323 netif_stop_queue(dev);
2324 np->tx_stop = 1;
2325 spin_unlock_irqrestore(&np->lock, flags);
2326 return NETDEV_TX_BUSY;
2327 }
2328 spin_unlock_irqrestore(&np->lock, flags);
2329
2330 start_tx = put_tx = np->put_tx.ex;
2331 start_tx_ctx = np->put_tx_ctx;
2332
2333 /* setup the header buffer */
2334 do {
2335 prev_tx = put_tx;
2336 prev_tx_ctx = np->put_tx_ctx;
2337 bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
2338 np->put_tx_ctx->dma = pci_map_single(np->pci_dev, skb->data + offset, bcnt,
2339 PCI_DMA_TODEVICE);
2340 np->put_tx_ctx->dma_len = bcnt;
2341 np->put_tx_ctx->dma_single = 1;
2342 put_tx->bufhigh = cpu_to_le32(dma_high(np->put_tx_ctx->dma));
2343 put_tx->buflow = cpu_to_le32(dma_low(np->put_tx_ctx->dma));
2344 put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
2345
2346 tx_flags = NV_TX2_VALID;
2347 offset += bcnt;
2348 size -= bcnt;
2349 if (unlikely(put_tx++ == np->last_tx.ex))
2350 put_tx = np->first_tx.ex;
2351 if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
2352 np->put_tx_ctx = np->first_tx_ctx;
2353 } while (size);
2354
2355 /* setup the fragments */
2356 for (i = 0; i < fragments; i++) {
2357 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2358 u32 frag_size = skb_frag_size(frag);
2359 offset = 0;
2360
2361 do {
2362 prev_tx = put_tx;
2363 prev_tx_ctx = np->put_tx_ctx;
2364 bcnt = (frag_size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : frag_size;
2365 np->put_tx_ctx->dma = skb_frag_dma_map(
2366 &np->pci_dev->dev,
2367 frag, offset,
2368 bcnt,
2369 DMA_TO_DEVICE);
2370 np->put_tx_ctx->dma_len = bcnt;
2371 np->put_tx_ctx->dma_single = 0;
2372 put_tx->bufhigh = cpu_to_le32(dma_high(np->put_tx_ctx->dma));
2373 put_tx->buflow = cpu_to_le32(dma_low(np->put_tx_ctx->dma));
2374 put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
2375
2376 offset += bcnt;
2377 frag_size -= bcnt;
2378 if (unlikely(put_tx++ == np->last_tx.ex))
2379 put_tx = np->first_tx.ex;
2380 if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
2381 np->put_tx_ctx = np->first_tx_ctx;
2382 } while (frag_size);
2383 }
2384
2385 /* set last fragment flag */
2386 prev_tx->flaglen |= cpu_to_le32(NV_TX2_LASTPACKET);
2387
2388 /* save skb in this slot's context area */
2389 prev_tx_ctx->skb = skb;
2390
2391 if (skb_is_gso(skb))
2392 tx_flags_extra = NV_TX2_TSO | (skb_shinfo(skb)->gso_size << NV_TX2_TSO_SHIFT);
2393 else
2394 tx_flags_extra = skb->ip_summed == CHECKSUM_PARTIAL ?
2395 NV_TX2_CHECKSUM_L3 | NV_TX2_CHECKSUM_L4 : 0;
2396
2397 /* vlan tag */
2398 if (vlan_tx_tag_present(skb))
2399 start_tx->txvlan = cpu_to_le32(NV_TX3_VLAN_TAG_PRESENT |
2400 vlan_tx_tag_get(skb));
2401 else
2402 start_tx->txvlan = 0;
2403
2404 spin_lock_irqsave(&np->lock, flags);
2405
2406 if (np->tx_limit) {
2407 /* Limit the number of outstanding tx. Setup all fragments, but
2408 * do not set the VALID bit on the first descriptor. Save a pointer
2409 * to that descriptor and also for next skb_map element.
2410 */
2411
2412 if (np->tx_pkts_in_progress == NV_TX_LIMIT_COUNT) {
2413 if (!np->tx_change_owner)
2414 np->tx_change_owner = start_tx_ctx;
2415
2416 /* remove VALID bit */
2417 tx_flags &= ~NV_TX2_VALID;
2418 start_tx_ctx->first_tx_desc = start_tx;
2419 start_tx_ctx->next_tx_ctx = np->put_tx_ctx;
2420 np->tx_end_flip = np->put_tx_ctx;
2421 } else {
2422 np->tx_pkts_in_progress++;
2423 }
2424 }
2425
2426 /* set tx flags */
2427 start_tx->flaglen |= cpu_to_le32(tx_flags | tx_flags_extra);
2428
2429 netdev_sent_queue(np->dev, skb->len);
2430
2431 skb_tx_timestamp(skb);
2432
2433 np->put_tx.ex = put_tx;
2434
2435 spin_unlock_irqrestore(&np->lock, flags);
2436
2437 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
2438 return NETDEV_TX_OK;
2439}
2440
2441static inline void nv_tx_flip_ownership(struct net_device *dev)
2442{
2443 struct fe_priv *np = netdev_priv(dev);
2444
2445 np->tx_pkts_in_progress--;
2446 if (np->tx_change_owner) {
2447 np->tx_change_owner->first_tx_desc->flaglen |=
2448 cpu_to_le32(NV_TX2_VALID);
2449 np->tx_pkts_in_progress++;
2450
2451 np->tx_change_owner = np->tx_change_owner->next_tx_ctx;
2452 if (np->tx_change_owner == np->tx_end_flip)
2453 np->tx_change_owner = NULL;
2454
2455 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
2456 }
2457}
2458
2459/*
2460 * nv_tx_done: check for completed packets, release the skbs.
2461 *
2462 * Caller must own np->lock.
2463 */
2464static int nv_tx_done(struct net_device *dev, int limit)
2465{
2466 struct fe_priv *np = netdev_priv(dev);
2467 u32 flags;
2468 int tx_work = 0;
2469 struct ring_desc *orig_get_tx = np->get_tx.orig;
2470 unsigned int bytes_compl = 0;
2471
2472 while ((np->get_tx.orig != np->put_tx.orig) &&
2473 !((flags = le32_to_cpu(np->get_tx.orig->flaglen)) & NV_TX_VALID) &&
2474 (tx_work < limit)) {
2475
2476 nv_unmap_txskb(np, np->get_tx_ctx);
2477
2478 if (np->desc_ver == DESC_VER_1) {
2479 if (flags & NV_TX_LASTPACKET) {
2480 if (flags & NV_TX_ERROR) {
2481 if ((flags & NV_TX_RETRYERROR)
2482 && !(flags & NV_TX_RETRYCOUNT_MASK))
2483 nv_legacybackoff_reseed(dev);
2484 } else {
2485 u64_stats_update_begin(&np->swstats_tx_syncp);
2486 np->stat_tx_packets++;
2487 np->stat_tx_bytes += np->get_tx_ctx->skb->len;
2488 u64_stats_update_end(&np->swstats_tx_syncp);
2489 }
2490 bytes_compl += np->get_tx_ctx->skb->len;
2491 dev_kfree_skb_any(np->get_tx_ctx->skb);
2492 np->get_tx_ctx->skb = NULL;
2493 tx_work++;
2494 }
2495 } else {
2496 if (flags & NV_TX2_LASTPACKET) {
2497 if (flags & NV_TX2_ERROR) {
2498 if ((flags & NV_TX2_RETRYERROR)
2499 && !(flags & NV_TX2_RETRYCOUNT_MASK))
2500 nv_legacybackoff_reseed(dev);
2501 } else {
2502 u64_stats_update_begin(&np->swstats_tx_syncp);
2503 np->stat_tx_packets++;
2504 np->stat_tx_bytes += np->get_tx_ctx->skb->len;
2505 u64_stats_update_end(&np->swstats_tx_syncp);
2506 }
2507 bytes_compl += np->get_tx_ctx->skb->len;
2508 dev_kfree_skb_any(np->get_tx_ctx->skb);
2509 np->get_tx_ctx->skb = NULL;
2510 tx_work++;
2511 }
2512 }
2513 if (unlikely(np->get_tx.orig++ == np->last_tx.orig))
2514 np->get_tx.orig = np->first_tx.orig;
2515 if (unlikely(np->get_tx_ctx++ == np->last_tx_ctx))
2516 np->get_tx_ctx = np->first_tx_ctx;
2517 }
2518
2519 netdev_completed_queue(np->dev, tx_work, bytes_compl);
2520
2521 if (unlikely((np->tx_stop == 1) && (np->get_tx.orig != orig_get_tx))) {
2522 np->tx_stop = 0;
2523 netif_wake_queue(dev);
2524 }
2525 return tx_work;
2526}
2527
2528static int nv_tx_done_optimized(struct net_device *dev, int limit)
2529{
2530 struct fe_priv *np = netdev_priv(dev);
2531 u32 flags;
2532 int tx_work = 0;
2533 struct ring_desc_ex *orig_get_tx = np->get_tx.ex;
2534 unsigned long bytes_cleaned = 0;
2535
2536 while ((np->get_tx.ex != np->put_tx.ex) &&
2537 !((flags = le32_to_cpu(np->get_tx.ex->flaglen)) & NV_TX2_VALID) &&
2538 (tx_work < limit)) {
2539
2540 nv_unmap_txskb(np, np->get_tx_ctx);
2541
2542 if (flags & NV_TX2_LASTPACKET) {
2543 if (flags & NV_TX2_ERROR) {
2544 if ((flags & NV_TX2_RETRYERROR)
2545 && !(flags & NV_TX2_RETRYCOUNT_MASK)) {
2546 if (np->driver_data & DEV_HAS_GEAR_MODE)
2547 nv_gear_backoff_reseed(dev);
2548 else
2549 nv_legacybackoff_reseed(dev);
2550 }
2551 } else {
2552 u64_stats_update_begin(&np->swstats_tx_syncp);
2553 np->stat_tx_packets++;
2554 np->stat_tx_bytes += np->get_tx_ctx->skb->len;
2555 u64_stats_update_end(&np->swstats_tx_syncp);
2556 }
2557
2558 bytes_cleaned += np->get_tx_ctx->skb->len;
2559 dev_kfree_skb_any(np->get_tx_ctx->skb);
2560 np->get_tx_ctx->skb = NULL;
2561 tx_work++;
2562
2563 if (np->tx_limit)
2564 nv_tx_flip_ownership(dev);
2565 }
2566
2567 if (unlikely(np->get_tx.ex++ == np->last_tx.ex))
2568 np->get_tx.ex = np->first_tx.ex;
2569 if (unlikely(np->get_tx_ctx++ == np->last_tx_ctx))
2570 np->get_tx_ctx = np->first_tx_ctx;
2571 }
2572
2573 netdev_completed_queue(np->dev, tx_work, bytes_cleaned);
2574
2575 if (unlikely((np->tx_stop == 1) && (np->get_tx.ex != orig_get_tx))) {
2576 np->tx_stop = 0;
2577 netif_wake_queue(dev);
2578 }
2579 return tx_work;
2580}
2581
2582/*
2583 * nv_tx_timeout: dev->tx_timeout function
2584 * Called with netif_tx_lock held.
2585 */
2586static void nv_tx_timeout(struct net_device *dev)
2587{
2588 struct fe_priv *np = netdev_priv(dev);
2589 u8 __iomem *base = get_hwbase(dev);
2590 u32 status;
2591 union ring_type put_tx;
2592 int saved_tx_limit;
2593
2594 if (np->msi_flags & NV_MSI_X_ENABLED)
2595 status = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
2596 else
2597 status = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
2598
2599 netdev_warn(dev, "Got tx_timeout. irq status: %08x\n", status);
2600
2601 if (unlikely(debug_tx_timeout)) {
2602 int i;
2603
2604 netdev_info(dev, "Ring at %lx\n", (unsigned long)np->ring_addr);
2605 netdev_info(dev, "Dumping tx registers\n");
2606 for (i = 0; i <= np->register_size; i += 32) {
2607 netdev_info(dev,
2608 "%3x: %08x %08x %08x %08x "
2609 "%08x %08x %08x %08x\n",
2610 i,
2611 readl(base + i + 0), readl(base + i + 4),
2612 readl(base + i + 8), readl(base + i + 12),
2613 readl(base + i + 16), readl(base + i + 20),
2614 readl(base + i + 24), readl(base + i + 28));
2615 }
2616 netdev_info(dev, "Dumping tx ring\n");
2617 for (i = 0; i < np->tx_ring_size; i += 4) {
2618 if (!nv_optimized(np)) {
2619 netdev_info(dev,
2620 "%03x: %08x %08x // %08x %08x "
2621 "// %08x %08x // %08x %08x\n",
2622 i,
2623 le32_to_cpu(np->tx_ring.orig[i].buf),
2624 le32_to_cpu(np->tx_ring.orig[i].flaglen),
2625 le32_to_cpu(np->tx_ring.orig[i+1].buf),
2626 le32_to_cpu(np->tx_ring.orig[i+1].flaglen),
2627 le32_to_cpu(np->tx_ring.orig[i+2].buf),
2628 le32_to_cpu(np->tx_ring.orig[i+2].flaglen),
2629 le32_to_cpu(np->tx_ring.orig[i+3].buf),
2630 le32_to_cpu(np->tx_ring.orig[i+3].flaglen));
2631 } else {
2632 netdev_info(dev,
2633 "%03x: %08x %08x %08x "
2634 "// %08x %08x %08x "
2635 "// %08x %08x %08x "
2636 "// %08x %08x %08x\n",
2637 i,
2638 le32_to_cpu(np->tx_ring.ex[i].bufhigh),
2639 le32_to_cpu(np->tx_ring.ex[i].buflow),
2640 le32_to_cpu(np->tx_ring.ex[i].flaglen),
2641 le32_to_cpu(np->tx_ring.ex[i+1].bufhigh),
2642 le32_to_cpu(np->tx_ring.ex[i+1].buflow),
2643 le32_to_cpu(np->tx_ring.ex[i+1].flaglen),
2644 le32_to_cpu(np->tx_ring.ex[i+2].bufhigh),
2645 le32_to_cpu(np->tx_ring.ex[i+2].buflow),
2646 le32_to_cpu(np->tx_ring.ex[i+2].flaglen),
2647 le32_to_cpu(np->tx_ring.ex[i+3].bufhigh),
2648 le32_to_cpu(np->tx_ring.ex[i+3].buflow),
2649 le32_to_cpu(np->tx_ring.ex[i+3].flaglen));
2650 }
2651 }
2652 }
2653
2654 spin_lock_irq(&np->lock);
2655
2656 /* 1) stop tx engine */
2657 nv_stop_tx(dev);
2658
2659 /* 2) complete any outstanding tx and do not give HW any limited tx pkts */
2660 saved_tx_limit = np->tx_limit;
2661 np->tx_limit = 0; /* prevent giving HW any limited pkts */
2662 np->tx_stop = 0; /* prevent waking tx queue */
2663 if (!nv_optimized(np))
2664 nv_tx_done(dev, np->tx_ring_size);
2665 else
2666 nv_tx_done_optimized(dev, np->tx_ring_size);
2667
2668 /* save current HW position */
2669 if (np->tx_change_owner)
2670 put_tx.ex = np->tx_change_owner->first_tx_desc;
2671 else
2672 put_tx = np->put_tx;
2673
2674 /* 3) clear all tx state */
2675 nv_drain_tx(dev);
2676 nv_init_tx(dev);
2677
2678 /* 4) restore state to current HW position */
2679 np->get_tx = np->put_tx = put_tx;
2680 np->tx_limit = saved_tx_limit;
2681
2682 /* 5) restart tx engine */
2683 nv_start_tx(dev);
2684 netif_wake_queue(dev);
2685 spin_unlock_irq(&np->lock);
2686}
2687
2688/*
2689 * Called when the nic notices a mismatch between the actual data len on the
2690 * wire and the len indicated in the 802 header
2691 */
2692static int nv_getlen(struct net_device *dev, void *packet, int datalen)
2693{
2694 int hdrlen; /* length of the 802 header */
2695 int protolen; /* length as stored in the proto field */
2696
2697 /* 1) calculate len according to header */
2698 if (((struct vlan_ethhdr *)packet)->h_vlan_proto == htons(ETH_P_8021Q)) {
2699 protolen = ntohs(((struct vlan_ethhdr *)packet)->h_vlan_encapsulated_proto);
2700 hdrlen = VLAN_HLEN;
2701 } else {
2702 protolen = ntohs(((struct ethhdr *)packet)->h_proto);
2703 hdrlen = ETH_HLEN;
2704 }
2705 if (protolen > ETH_DATA_LEN)
2706 return datalen; /* Value in proto field not a len, no checks possible */
2707
2708 protolen += hdrlen;
2709 /* consistency checks: */
2710 if (datalen > ETH_ZLEN) {
2711 if (datalen >= protolen) {
2712 /* more data on wire than in 802 header, trim of
2713 * additional data.
2714 */
2715 return protolen;
2716 } else {
2717 /* less data on wire than mentioned in header.
2718 * Discard the packet.
2719 */
2720 return -1;
2721 }
2722 } else {
2723 /* short packet. Accept only if 802 values are also short */
2724 if (protolen > ETH_ZLEN) {
2725 return -1;
2726 }
2727 return datalen;
2728 }
2729}
2730
2731static int nv_rx_process(struct net_device *dev, int limit)
2732{
2733 struct fe_priv *np = netdev_priv(dev);
2734 u32 flags;
2735 int rx_work = 0;
2736 struct sk_buff *skb;
2737 int len;
2738
2739 while ((np->get_rx.orig != np->put_rx.orig) &&
2740 !((flags = le32_to_cpu(np->get_rx.orig->flaglen)) & NV_RX_AVAIL) &&
2741 (rx_work < limit)) {
2742
2743 /*
2744 * the packet is for us - immediately tear down the pci mapping.
2745 * TODO: check if a prefetch of the first cacheline improves
2746 * the performance.
2747 */
2748 pci_unmap_single(np->pci_dev, np->get_rx_ctx->dma,
2749 np->get_rx_ctx->dma_len,
2750 PCI_DMA_FROMDEVICE);
2751 skb = np->get_rx_ctx->skb;
2752 np->get_rx_ctx->skb = NULL;
2753
2754 /* look at what we actually got: */
2755 if (np->desc_ver == DESC_VER_1) {
2756 if (likely(flags & NV_RX_DESCRIPTORVALID)) {
2757 len = flags & LEN_MASK_V1;
2758 if (unlikely(flags & NV_RX_ERROR)) {
2759 if ((flags & NV_RX_ERROR_MASK) == NV_RX_ERROR4) {
2760 len = nv_getlen(dev, skb->data, len);
2761 if (len < 0) {
2762 dev_kfree_skb(skb);
2763 goto next_pkt;
2764 }
2765 }
2766 /* framing errors are soft errors */
2767 else if ((flags & NV_RX_ERROR_MASK) == NV_RX_FRAMINGERR) {
2768 if (flags & NV_RX_SUBSTRACT1)
2769 len--;
2770 }
2771 /* the rest are hard errors */
2772 else {
2773 if (flags & NV_RX_MISSEDFRAME) {
2774 u64_stats_update_begin(&np->swstats_rx_syncp);
2775 np->stat_rx_missed_errors++;
2776 u64_stats_update_end(&np->swstats_rx_syncp);
2777 }
2778 dev_kfree_skb(skb);
2779 goto next_pkt;
2780 }
2781 }
2782 } else {
2783 dev_kfree_skb(skb);
2784 goto next_pkt;
2785 }
2786 } else {
2787 if (likely(flags & NV_RX2_DESCRIPTORVALID)) {
2788 len = flags & LEN_MASK_V2;
2789 if (unlikely(flags & NV_RX2_ERROR)) {
2790 if ((flags & NV_RX2_ERROR_MASK) == NV_RX2_ERROR4) {
2791 len = nv_getlen(dev, skb->data, len);
2792 if (len < 0) {
2793 dev_kfree_skb(skb);
2794 goto next_pkt;
2795 }
2796 }
2797 /* framing errors are soft errors */
2798 else if ((flags & NV_RX2_ERROR_MASK) == NV_RX2_FRAMINGERR) {
2799 if (flags & NV_RX2_SUBSTRACT1)
2800 len--;
2801 }
2802 /* the rest are hard errors */
2803 else {
2804 dev_kfree_skb(skb);
2805 goto next_pkt;
2806 }
2807 }
2808 if (((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_TCP) || /*ip and tcp */
2809 ((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_UDP)) /*ip and udp */
2810 skb->ip_summed = CHECKSUM_UNNECESSARY;
2811 } else {
2812 dev_kfree_skb(skb);
2813 goto next_pkt;
2814 }
2815 }
2816 /* got a valid packet - forward it to the network core */
2817 skb_put(skb, len);
2818 skb->protocol = eth_type_trans(skb, dev);
2819 napi_gro_receive(&np->napi, skb);
2820 u64_stats_update_begin(&np->swstats_rx_syncp);
2821 np->stat_rx_packets++;
2822 np->stat_rx_bytes += len;
2823 u64_stats_update_end(&np->swstats_rx_syncp);
2824next_pkt:
2825 if (unlikely(np->get_rx.orig++ == np->last_rx.orig))
2826 np->get_rx.orig = np->first_rx.orig;
2827 if (unlikely(np->get_rx_ctx++ == np->last_rx_ctx))
2828 np->get_rx_ctx = np->first_rx_ctx;
2829
2830 rx_work++;
2831 }
2832
2833 return rx_work;
2834}
2835
2836static int nv_rx_process_optimized(struct net_device *dev, int limit)
2837{
2838 struct fe_priv *np = netdev_priv(dev);
2839 u32 flags;
2840 u32 vlanflags = 0;
2841 int rx_work = 0;
2842 struct sk_buff *skb;
2843 int len;
2844
2845 while ((np->get_rx.ex != np->put_rx.ex) &&
2846 !((flags = le32_to_cpu(np->get_rx.ex->flaglen)) & NV_RX2_AVAIL) &&
2847 (rx_work < limit)) {
2848
2849 /*
2850 * the packet is for us - immediately tear down the pci mapping.
2851 * TODO: check if a prefetch of the first cacheline improves
2852 * the performance.
2853 */
2854 pci_unmap_single(np->pci_dev, np->get_rx_ctx->dma,
2855 np->get_rx_ctx->dma_len,
2856 PCI_DMA_FROMDEVICE);
2857 skb = np->get_rx_ctx->skb;
2858 np->get_rx_ctx->skb = NULL;
2859
2860 /* look at what we actually got: */
2861 if (likely(flags & NV_RX2_DESCRIPTORVALID)) {
2862 len = flags & LEN_MASK_V2;
2863 if (unlikely(flags & NV_RX2_ERROR)) {
2864 if ((flags & NV_RX2_ERROR_MASK) == NV_RX2_ERROR4) {
2865 len = nv_getlen(dev, skb->data, len);
2866 if (len < 0) {
2867 dev_kfree_skb(skb);
2868 goto next_pkt;
2869 }
2870 }
2871 /* framing errors are soft errors */
2872 else if ((flags & NV_RX2_ERROR_MASK) == NV_RX2_FRAMINGERR) {
2873 if (flags & NV_RX2_SUBSTRACT1)
2874 len--;
2875 }
2876 /* the rest are hard errors */
2877 else {
2878 dev_kfree_skb(skb);
2879 goto next_pkt;
2880 }
2881 }
2882
2883 if (((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_TCP) || /*ip and tcp */
2884 ((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_UDP)) /*ip and udp */
2885 skb->ip_summed = CHECKSUM_UNNECESSARY;
2886
2887 /* got a valid packet - forward it to the network core */
2888 skb_put(skb, len);
2889 skb->protocol = eth_type_trans(skb, dev);
2890 prefetch(skb->data);
2891
2892 vlanflags = le32_to_cpu(np->get_rx.ex->buflow);
2893
2894 /*
2895 * There's need to check for NETIF_F_HW_VLAN_RX here.
2896 * Even if vlan rx accel is disabled,
2897 * NV_RX3_VLAN_TAG_PRESENT is pseudo randomly set.
2898 */
2899 if (dev->features & NETIF_F_HW_VLAN_RX &&
2900 vlanflags & NV_RX3_VLAN_TAG_PRESENT) {
2901 u16 vid = vlanflags & NV_RX3_VLAN_TAG_MASK;
2902
2903 __vlan_hwaccel_put_tag(skb, vid);
2904 }
2905 napi_gro_receive(&np->napi, skb);
2906 u64_stats_update_begin(&np->swstats_rx_syncp);
2907 np->stat_rx_packets++;
2908 np->stat_rx_bytes += len;
2909 u64_stats_update_end(&np->swstats_rx_syncp);
2910 } else {
2911 dev_kfree_skb(skb);
2912 }
2913next_pkt:
2914 if (unlikely(np->get_rx.ex++ == np->last_rx.ex))
2915 np->get_rx.ex = np->first_rx.ex;
2916 if (unlikely(np->get_rx_ctx++ == np->last_rx_ctx))
2917 np->get_rx_ctx = np->first_rx_ctx;
2918
2919 rx_work++;
2920 }
2921
2922 return rx_work;
2923}
2924
2925static void set_bufsize(struct net_device *dev)
2926{
2927 struct fe_priv *np = netdev_priv(dev);
2928
2929 if (dev->mtu <= ETH_DATA_LEN)
2930 np->rx_buf_sz = ETH_DATA_LEN + NV_RX_HEADERS;
2931 else
2932 np->rx_buf_sz = dev->mtu + NV_RX_HEADERS;
2933}
2934
2935/*
2936 * nv_change_mtu: dev->change_mtu function
2937 * Called with dev_base_lock held for read.
2938 */
2939static int nv_change_mtu(struct net_device *dev, int new_mtu)
2940{
2941 struct fe_priv *np = netdev_priv(dev);
2942 int old_mtu;
2943
2944 if (new_mtu < 64 || new_mtu > np->pkt_limit)
2945 return -EINVAL;
2946
2947 old_mtu = dev->mtu;
2948 dev->mtu = new_mtu;
2949
2950 /* return early if the buffer sizes will not change */
2951 if (old_mtu <= ETH_DATA_LEN && new_mtu <= ETH_DATA_LEN)
2952 return 0;
2953 if (old_mtu == new_mtu)
2954 return 0;
2955
2956 /* synchronized against open : rtnl_lock() held by caller */
2957 if (netif_running(dev)) {
2958 u8 __iomem *base = get_hwbase(dev);
2959 /*
2960 * It seems that the nic preloads valid ring entries into an
2961 * internal buffer. The procedure for flushing everything is
2962 * guessed, there is probably a simpler approach.
2963 * Changing the MTU is a rare event, it shouldn't matter.
2964 */
2965 nv_disable_irq(dev);
2966 nv_napi_disable(dev);
2967 netif_tx_lock_bh(dev);
2968 netif_addr_lock(dev);
2969 spin_lock(&np->lock);
2970 /* stop engines */
2971 nv_stop_rxtx(dev);
2972 nv_txrx_reset(dev);
2973 /* drain rx queue */
2974 nv_drain_rxtx(dev);
2975 /* reinit driver view of the rx queue */
2976 set_bufsize(dev);
2977 if (nv_init_ring(dev)) {
2978 if (!np->in_shutdown)
2979 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
2980 }
2981 /* reinit nic view of the rx queue */
2982 writel(np->rx_buf_sz, base + NvRegOffloadConfig);
2983 setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
2984 writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
2985 base + NvRegRingSizes);
2986 pci_push(base);
2987 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
2988 pci_push(base);
2989
2990 /* restart rx engine */
2991 nv_start_rxtx(dev);
2992 spin_unlock(&np->lock);
2993 netif_addr_unlock(dev);
2994 netif_tx_unlock_bh(dev);
2995 nv_napi_enable(dev);
2996 nv_enable_irq(dev);
2997 }
2998 return 0;
2999}
3000
3001static void nv_copy_mac_to_hw(struct net_device *dev)
3002{
3003 u8 __iomem *base = get_hwbase(dev);
3004 u32 mac[2];
3005
3006 mac[0] = (dev->dev_addr[0] << 0) + (dev->dev_addr[1] << 8) +
3007 (dev->dev_addr[2] << 16) + (dev->dev_addr[3] << 24);
3008 mac[1] = (dev->dev_addr[4] << 0) + (dev->dev_addr[5] << 8);
3009
3010 writel(mac[0], base + NvRegMacAddrA);
3011 writel(mac[1], base + NvRegMacAddrB);
3012}
3013
3014/*
3015 * nv_set_mac_address: dev->set_mac_address function
3016 * Called with rtnl_lock() held.
3017 */
3018static int nv_set_mac_address(struct net_device *dev, void *addr)
3019{
3020 struct fe_priv *np = netdev_priv(dev);
3021 struct sockaddr *macaddr = (struct sockaddr *)addr;
3022
3023 if (!is_valid_ether_addr(macaddr->sa_data))
3024 return -EADDRNOTAVAIL;
3025
3026 /* synchronized against open : rtnl_lock() held by caller */
3027 memcpy(dev->dev_addr, macaddr->sa_data, ETH_ALEN);
3028 dev->addr_assign_type &= ~NET_ADDR_RANDOM;
3029
3030 if (netif_running(dev)) {
3031 netif_tx_lock_bh(dev);
3032 netif_addr_lock(dev);
3033 spin_lock_irq(&np->lock);
3034
3035 /* stop rx engine */
3036 nv_stop_rx(dev);
3037
3038 /* set mac address */
3039 nv_copy_mac_to_hw(dev);
3040
3041 /* restart rx engine */
3042 nv_start_rx(dev);
3043 spin_unlock_irq(&np->lock);
3044 netif_addr_unlock(dev);
3045 netif_tx_unlock_bh(dev);
3046 } else {
3047 nv_copy_mac_to_hw(dev);
3048 }
3049 return 0;
3050}
3051
3052/*
3053 * nv_set_multicast: dev->set_multicast function
3054 * Called with netif_tx_lock held.
3055 */
3056static void nv_set_multicast(struct net_device *dev)
3057{
3058 struct fe_priv *np = netdev_priv(dev);
3059 u8 __iomem *base = get_hwbase(dev);
3060 u32 addr[2];
3061 u32 mask[2];
3062 u32 pff = readl(base + NvRegPacketFilterFlags) & NVREG_PFF_PAUSE_RX;
3063
3064 memset(addr, 0, sizeof(addr));
3065 memset(mask, 0, sizeof(mask));
3066
3067 if (dev->flags & IFF_PROMISC) {
3068 pff |= NVREG_PFF_PROMISC;
3069 } else {
3070 pff |= NVREG_PFF_MYADDR;
3071
3072 if (dev->flags & IFF_ALLMULTI || !netdev_mc_empty(dev)) {
3073 u32 alwaysOff[2];
3074 u32 alwaysOn[2];
3075
3076 alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0xffffffff;
3077 if (dev->flags & IFF_ALLMULTI) {
3078 alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0;
3079 } else {
3080 struct netdev_hw_addr *ha;
3081
3082 netdev_for_each_mc_addr(ha, dev) {
3083 unsigned char *hw_addr = ha->addr;
3084 u32 a, b;
3085
3086 a = le32_to_cpu(*(__le32 *) hw_addr);
3087 b = le16_to_cpu(*(__le16 *) (&hw_addr[4]));
3088 alwaysOn[0] &= a;
3089 alwaysOff[0] &= ~a;
3090 alwaysOn[1] &= b;
3091 alwaysOff[1] &= ~b;
3092 }
3093 }
3094 addr[0] = alwaysOn[0];
3095 addr[1] = alwaysOn[1];
3096 mask[0] = alwaysOn[0] | alwaysOff[0];
3097 mask[1] = alwaysOn[1] | alwaysOff[1];
3098 } else {
3099 mask[0] = NVREG_MCASTMASKA_NONE;
3100 mask[1] = NVREG_MCASTMASKB_NONE;
3101 }
3102 }
3103 addr[0] |= NVREG_MCASTADDRA_FORCE;
3104 pff |= NVREG_PFF_ALWAYS;
3105 spin_lock_irq(&np->lock);
3106 nv_stop_rx(dev);
3107 writel(addr[0], base + NvRegMulticastAddrA);
3108 writel(addr[1], base + NvRegMulticastAddrB);
3109 writel(mask[0], base + NvRegMulticastMaskA);
3110 writel(mask[1], base + NvRegMulticastMaskB);
3111 writel(pff, base + NvRegPacketFilterFlags);
3112 nv_start_rx(dev);
3113 spin_unlock_irq(&np->lock);
3114}
3115
3116static void nv_update_pause(struct net_device *dev, u32 pause_flags)
3117{
3118 struct fe_priv *np = netdev_priv(dev);
3119 u8 __iomem *base = get_hwbase(dev);
3120
3121 np->pause_flags &= ~(NV_PAUSEFRAME_TX_ENABLE | NV_PAUSEFRAME_RX_ENABLE);
3122
3123 if (np->pause_flags & NV_PAUSEFRAME_RX_CAPABLE) {
3124 u32 pff = readl(base + NvRegPacketFilterFlags) & ~NVREG_PFF_PAUSE_RX;
3125 if (pause_flags & NV_PAUSEFRAME_RX_ENABLE) {
3126 writel(pff|NVREG_PFF_PAUSE_RX, base + NvRegPacketFilterFlags);
3127 np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
3128 } else {
3129 writel(pff, base + NvRegPacketFilterFlags);
3130 }
3131 }
3132 if (np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE) {
3133 u32 regmisc = readl(base + NvRegMisc1) & ~NVREG_MISC1_PAUSE_TX;
3134 if (pause_flags & NV_PAUSEFRAME_TX_ENABLE) {
3135 u32 pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V1;
3136 if (np->driver_data & DEV_HAS_PAUSEFRAME_TX_V2)
3137 pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V2;
3138 if (np->driver_data & DEV_HAS_PAUSEFRAME_TX_V3) {
3139 pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V3;
3140 /* limit the number of tx pause frames to a default of 8 */
3141 writel(readl(base + NvRegTxPauseFrameLimit)|NVREG_TX_PAUSEFRAMELIMIT_ENABLE, base + NvRegTxPauseFrameLimit);
3142 }
3143 writel(pause_enable, base + NvRegTxPauseFrame);
3144 writel(regmisc|NVREG_MISC1_PAUSE_TX, base + NvRegMisc1);
3145 np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3146 } else {
3147 writel(NVREG_TX_PAUSEFRAME_DISABLE, base + NvRegTxPauseFrame);
3148 writel(regmisc, base + NvRegMisc1);
3149 }
3150 }
3151}
3152
3153static void nv_force_linkspeed(struct net_device *dev, int speed, int duplex)
3154{
3155 struct fe_priv *np = netdev_priv(dev);
3156 u8 __iomem *base = get_hwbase(dev);
3157 u32 phyreg, txreg;
3158 int mii_status;
3159
3160 np->linkspeed = NVREG_LINKSPEED_FORCE|speed;
3161 np->duplex = duplex;
3162
3163 /* see if gigabit phy */
3164 mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
3165 if (mii_status & PHY_GIGABIT) {
3166 np->gigabit = PHY_GIGABIT;
3167 phyreg = readl(base + NvRegSlotTime);
3168 phyreg &= ~(0x3FF00);
3169 if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_10)
3170 phyreg |= NVREG_SLOTTIME_10_100_FULL;
3171 else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_100)
3172 phyreg |= NVREG_SLOTTIME_10_100_FULL;
3173 else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_1000)
3174 phyreg |= NVREG_SLOTTIME_1000_FULL;
3175 writel(phyreg, base + NvRegSlotTime);
3176 }
3177
3178 phyreg = readl(base + NvRegPhyInterface);
3179 phyreg &= ~(PHY_HALF|PHY_100|PHY_1000);
3180 if (np->duplex == 0)
3181 phyreg |= PHY_HALF;
3182 if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_100)
3183 phyreg |= PHY_100;
3184 else if ((np->linkspeed & NVREG_LINKSPEED_MASK) ==
3185 NVREG_LINKSPEED_1000)
3186 phyreg |= PHY_1000;
3187 writel(phyreg, base + NvRegPhyInterface);
3188
3189 if (phyreg & PHY_RGMII) {
3190 if ((np->linkspeed & NVREG_LINKSPEED_MASK) ==
3191 NVREG_LINKSPEED_1000)
3192 txreg = NVREG_TX_DEFERRAL_RGMII_1000;
3193 else
3194 txreg = NVREG_TX_DEFERRAL_RGMII_10_100;
3195 } else {
3196 txreg = NVREG_TX_DEFERRAL_DEFAULT;
3197 }
3198 writel(txreg, base + NvRegTxDeferral);
3199
3200 if (np->desc_ver == DESC_VER_1) {
3201 txreg = NVREG_TX_WM_DESC1_DEFAULT;
3202 } else {
3203 if ((np->linkspeed & NVREG_LINKSPEED_MASK) ==
3204 NVREG_LINKSPEED_1000)
3205 txreg = NVREG_TX_WM_DESC2_3_1000;
3206 else
3207 txreg = NVREG_TX_WM_DESC2_3_DEFAULT;
3208 }
3209 writel(txreg, base + NvRegTxWatermark);
3210
3211 writel(NVREG_MISC1_FORCE | (np->duplex ? 0 : NVREG_MISC1_HD),
3212 base + NvRegMisc1);
3213 pci_push(base);
3214 writel(np->linkspeed, base + NvRegLinkSpeed);
3215 pci_push(base);
3216
3217 return;
3218}
3219
3220/**
3221 * nv_update_linkspeed: Setup the MAC according to the link partner
3222 * @dev: Network device to be configured
3223 *
3224 * The function queries the PHY and checks if there is a link partner.
3225 * If yes, then it sets up the MAC accordingly. Otherwise, the MAC is
3226 * set to 10 MBit HD.
3227 *
3228 * The function returns 0 if there is no link partner and 1 if there is
3229 * a good link partner.
3230 */
3231static int nv_update_linkspeed(struct net_device *dev)
3232{
3233 struct fe_priv *np = netdev_priv(dev);
3234 u8 __iomem *base = get_hwbase(dev);
3235 int adv = 0;
3236 int lpa = 0;
3237 int adv_lpa, adv_pause, lpa_pause;
3238 int newls = np->linkspeed;
3239 int newdup = np->duplex;
3240 int mii_status;
3241 u32 bmcr;
3242 int retval = 0;
3243 u32 control_1000, status_1000, phyreg, pause_flags, txreg;
3244 u32 txrxFlags = 0;
3245 u32 phy_exp;
3246
3247 /* If device loopback is enabled, set carrier on and enable max link
3248 * speed.
3249 */
3250 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
3251 if (bmcr & BMCR_LOOPBACK) {
3252 if (netif_running(dev)) {
3253 nv_force_linkspeed(dev, NVREG_LINKSPEED_1000, 1);
3254 if (!netif_carrier_ok(dev))
3255 netif_carrier_on(dev);
3256 }
3257 return 1;
3258 }
3259
3260 /* BMSR_LSTATUS is latched, read it twice:
3261 * we want the current value.
3262 */
3263 mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
3264 mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
3265
3266 if (!(mii_status & BMSR_LSTATUS)) {
3267 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3268 newdup = 0;
3269 retval = 0;
3270 goto set_speed;
3271 }
3272
3273 if (np->autoneg == 0) {
3274 if (np->fixed_mode & LPA_100FULL) {
3275 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
3276 newdup = 1;
3277 } else if (np->fixed_mode & LPA_100HALF) {
3278 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
3279 newdup = 0;
3280 } else if (np->fixed_mode & LPA_10FULL) {
3281 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3282 newdup = 1;
3283 } else {
3284 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3285 newdup = 0;
3286 }
3287 retval = 1;
3288 goto set_speed;
3289 }
3290 /* check auto negotiation is complete */
3291 if (!(mii_status & BMSR_ANEGCOMPLETE)) {
3292 /* still in autonegotiation - configure nic for 10 MBit HD and wait. */
3293 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3294 newdup = 0;
3295 retval = 0;
3296 goto set_speed;
3297 }
3298
3299 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
3300 lpa = mii_rw(dev, np->phyaddr, MII_LPA, MII_READ);
3301
3302 retval = 1;
3303 if (np->gigabit == PHY_GIGABIT) {
3304 control_1000 = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
3305 status_1000 = mii_rw(dev, np->phyaddr, MII_STAT1000, MII_READ);
3306
3307 if ((control_1000 & ADVERTISE_1000FULL) &&
3308 (status_1000 & LPA_1000FULL)) {
3309 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_1000;
3310 newdup = 1;
3311 goto set_speed;
3312 }
3313 }
3314
3315 /* FIXME: handle parallel detection properly */
3316 adv_lpa = lpa & adv;
3317 if (adv_lpa & LPA_100FULL) {
3318 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
3319 newdup = 1;
3320 } else if (adv_lpa & LPA_100HALF) {
3321 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
3322 newdup = 0;
3323 } else if (adv_lpa & LPA_10FULL) {
3324 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3325 newdup = 1;
3326 } else if (adv_lpa & LPA_10HALF) {
3327 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3328 newdup = 0;
3329 } else {
3330 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3331 newdup = 0;
3332 }
3333
3334set_speed:
3335 if (np->duplex == newdup && np->linkspeed == newls)
3336 return retval;
3337
3338 np->duplex = newdup;
3339 np->linkspeed = newls;
3340
3341 /* The transmitter and receiver must be restarted for safe update */
3342 if (readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_START) {
3343 txrxFlags |= NV_RESTART_TX;
3344 nv_stop_tx(dev);
3345 }
3346 if (readl(base + NvRegReceiverControl) & NVREG_RCVCTL_START) {
3347 txrxFlags |= NV_RESTART_RX;
3348 nv_stop_rx(dev);
3349 }
3350
3351 if (np->gigabit == PHY_GIGABIT) {
3352 phyreg = readl(base + NvRegSlotTime);
3353 phyreg &= ~(0x3FF00);
3354 if (((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_10) ||
3355 ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_100))
3356 phyreg |= NVREG_SLOTTIME_10_100_FULL;
3357 else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_1000)
3358 phyreg |= NVREG_SLOTTIME_1000_FULL;
3359 writel(phyreg, base + NvRegSlotTime);
3360 }
3361
3362 phyreg = readl(base + NvRegPhyInterface);
3363 phyreg &= ~(PHY_HALF|PHY_100|PHY_1000);
3364 if (np->duplex == 0)
3365 phyreg |= PHY_HALF;
3366 if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_100)
3367 phyreg |= PHY_100;
3368 else if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000)
3369 phyreg |= PHY_1000;
3370 writel(phyreg, base + NvRegPhyInterface);
3371
3372 phy_exp = mii_rw(dev, np->phyaddr, MII_EXPANSION, MII_READ) & EXPANSION_NWAY; /* autoneg capable */
3373 if (phyreg & PHY_RGMII) {
3374 if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000) {
3375 txreg = NVREG_TX_DEFERRAL_RGMII_1000;
3376 } else {
3377 if (!phy_exp && !np->duplex && (np->driver_data & DEV_HAS_COLLISION_FIX)) {
3378 if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_10)
3379 txreg = NVREG_TX_DEFERRAL_RGMII_STRETCH_10;
3380 else
3381 txreg = NVREG_TX_DEFERRAL_RGMII_STRETCH_100;
3382 } else {
3383 txreg = NVREG_TX_DEFERRAL_RGMII_10_100;
3384 }
3385 }
3386 } else {
3387 if (!phy_exp && !np->duplex && (np->driver_data & DEV_HAS_COLLISION_FIX))
3388 txreg = NVREG_TX_DEFERRAL_MII_STRETCH;
3389 else
3390 txreg = NVREG_TX_DEFERRAL_DEFAULT;
3391 }
3392 writel(txreg, base + NvRegTxDeferral);
3393
3394 if (np->desc_ver == DESC_VER_1) {
3395 txreg = NVREG_TX_WM_DESC1_DEFAULT;
3396 } else {
3397 if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000)
3398 txreg = NVREG_TX_WM_DESC2_3_1000;
3399 else
3400 txreg = NVREG_TX_WM_DESC2_3_DEFAULT;
3401 }
3402 writel(txreg, base + NvRegTxWatermark);
3403
3404 writel(NVREG_MISC1_FORCE | (np->duplex ? 0 : NVREG_MISC1_HD),
3405 base + NvRegMisc1);
3406 pci_push(base);
3407 writel(np->linkspeed, base + NvRegLinkSpeed);
3408 pci_push(base);
3409
3410 pause_flags = 0;
3411 /* setup pause frame */
3412 if (np->duplex != 0) {
3413 if (np->autoneg && np->pause_flags & NV_PAUSEFRAME_AUTONEG) {
3414 adv_pause = adv & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
3415 lpa_pause = lpa & (LPA_PAUSE_CAP | LPA_PAUSE_ASYM);
3416
3417 switch (adv_pause) {
3418 case ADVERTISE_PAUSE_CAP:
3419 if (lpa_pause & LPA_PAUSE_CAP) {
3420 pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
3421 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
3422 pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3423 }
3424 break;
3425 case ADVERTISE_PAUSE_ASYM:
3426 if (lpa_pause == (LPA_PAUSE_CAP | LPA_PAUSE_ASYM))
3427 pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3428 break;
3429 case ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM:
3430 if (lpa_pause & LPA_PAUSE_CAP) {
3431 pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
3432 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
3433 pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3434 }
3435 if (lpa_pause == LPA_PAUSE_ASYM)
3436 pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
3437 break;
3438 }
3439 } else {
3440 pause_flags = np->pause_flags;
3441 }
3442 }
3443 nv_update_pause(dev, pause_flags);
3444
3445 if (txrxFlags & NV_RESTART_TX)
3446 nv_start_tx(dev);
3447 if (txrxFlags & NV_RESTART_RX)
3448 nv_start_rx(dev);
3449
3450 return retval;
3451}
3452
3453static void nv_linkchange(struct net_device *dev)
3454{
3455 if (nv_update_linkspeed(dev)) {
3456 if (!netif_carrier_ok(dev)) {
3457 netif_carrier_on(dev);
3458 netdev_info(dev, "link up\n");
3459 nv_txrx_gate(dev, false);
3460 nv_start_rx(dev);
3461 }
3462 } else {
3463 if (netif_carrier_ok(dev)) {
3464 netif_carrier_off(dev);
3465 netdev_info(dev, "link down\n");
3466 nv_txrx_gate(dev, true);
3467 nv_stop_rx(dev);
3468 }
3469 }
3470}
3471
3472static void nv_link_irq(struct net_device *dev)
3473{
3474 u8 __iomem *base = get_hwbase(dev);
3475 u32 miistat;
3476
3477 miistat = readl(base + NvRegMIIStatus);
3478 writel(NVREG_MIISTAT_LINKCHANGE, base + NvRegMIIStatus);
3479
3480 if (miistat & (NVREG_MIISTAT_LINKCHANGE))
3481 nv_linkchange(dev);
3482}
3483
3484static void nv_msi_workaround(struct fe_priv *np)
3485{
3486
3487 /* Need to toggle the msi irq mask within the ethernet device,
3488 * otherwise, future interrupts will not be detected.
3489 */
3490 if (np->msi_flags & NV_MSI_ENABLED) {
3491 u8 __iomem *base = np->base;
3492
3493 writel(0, base + NvRegMSIIrqMask);
3494 writel(NVREG_MSI_VECTOR_0_ENABLED, base + NvRegMSIIrqMask);
3495 }
3496}
3497
3498static inline int nv_change_interrupt_mode(struct net_device *dev, int total_work)
3499{
3500 struct fe_priv *np = netdev_priv(dev);
3501
3502 if (optimization_mode == NV_OPTIMIZATION_MODE_DYNAMIC) {
3503 if (total_work > NV_DYNAMIC_THRESHOLD) {
3504 /* transition to poll based interrupts */
3505 np->quiet_count = 0;
3506 if (np->irqmask != NVREG_IRQMASK_CPU) {
3507 np->irqmask = NVREG_IRQMASK_CPU;
3508 return 1;
3509 }
3510 } else {
3511 if (np->quiet_count < NV_DYNAMIC_MAX_QUIET_COUNT) {
3512 np->quiet_count++;
3513 } else {
3514 /* reached a period of low activity, switch
3515 to per tx/rx packet interrupts */
3516 if (np->irqmask != NVREG_IRQMASK_THROUGHPUT) {
3517 np->irqmask = NVREG_IRQMASK_THROUGHPUT;
3518 return 1;
3519 }
3520 }
3521 }
3522 }
3523 return 0;
3524}
3525
3526static irqreturn_t nv_nic_irq(int foo, void *data)
3527{
3528 struct net_device *dev = (struct net_device *) data;
3529 struct fe_priv *np = netdev_priv(dev);
3530 u8 __iomem *base = get_hwbase(dev);
3531
3532 if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
3533 np->events = readl(base + NvRegIrqStatus);
3534 writel(np->events, base + NvRegIrqStatus);
3535 } else {
3536 np->events = readl(base + NvRegMSIXIrqStatus);
3537 writel(np->events, base + NvRegMSIXIrqStatus);
3538 }
3539 if (!(np->events & np->irqmask))
3540 return IRQ_NONE;
3541
3542 nv_msi_workaround(np);
3543
3544 if (napi_schedule_prep(&np->napi)) {
3545 /*
3546 * Disable further irq's (msix not enabled with napi)
3547 */
3548 writel(0, base + NvRegIrqMask);
3549 __napi_schedule(&np->napi);
3550 }
3551
3552 return IRQ_HANDLED;
3553}
3554
3555/**
3556 * All _optimized functions are used to help increase performance
3557 * (reduce CPU and increase throughput). They use descripter version 3,
3558 * compiler directives, and reduce memory accesses.
3559 */
3560static irqreturn_t nv_nic_irq_optimized(int foo, void *data)
3561{
3562 struct net_device *dev = (struct net_device *) data;
3563 struct fe_priv *np = netdev_priv(dev);
3564 u8 __iomem *base = get_hwbase(dev);
3565
3566 if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
3567 np->events = readl(base + NvRegIrqStatus);
3568 writel(np->events, base + NvRegIrqStatus);
3569 } else {
3570 np->events = readl(base + NvRegMSIXIrqStatus);
3571 writel(np->events, base + NvRegMSIXIrqStatus);
3572 }
3573 if (!(np->events & np->irqmask))
3574 return IRQ_NONE;
3575
3576 nv_msi_workaround(np);
3577
3578 if (napi_schedule_prep(&np->napi)) {
3579 /*
3580 * Disable further irq's (msix not enabled with napi)
3581 */
3582 writel(0, base + NvRegIrqMask);
3583 __napi_schedule(&np->napi);
3584 }
3585
3586 return IRQ_HANDLED;
3587}
3588
3589static irqreturn_t nv_nic_irq_tx(int foo, void *data)
3590{
3591 struct net_device *dev = (struct net_device *) data;
3592 struct fe_priv *np = netdev_priv(dev);
3593 u8 __iomem *base = get_hwbase(dev);
3594 u32 events;
3595 int i;
3596 unsigned long flags;
3597
3598 for (i = 0;; i++) {
3599 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_TX_ALL;
3600 writel(events, base + NvRegMSIXIrqStatus);
3601 netdev_dbg(dev, "tx irq events: %08x\n", events);
3602 if (!(events & np->irqmask))
3603 break;
3604
3605 spin_lock_irqsave(&np->lock, flags);
3606 nv_tx_done_optimized(dev, TX_WORK_PER_LOOP);
3607 spin_unlock_irqrestore(&np->lock, flags);
3608
3609 if (unlikely(i > max_interrupt_work)) {
3610 spin_lock_irqsave(&np->lock, flags);
3611 /* disable interrupts on the nic */
3612 writel(NVREG_IRQ_TX_ALL, base + NvRegIrqMask);
3613 pci_push(base);
3614
3615 if (!np->in_shutdown) {
3616 np->nic_poll_irq |= NVREG_IRQ_TX_ALL;
3617 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3618 }
3619 spin_unlock_irqrestore(&np->lock, flags);
3620 netdev_dbg(dev, "%s: too many iterations (%d)\n",
3621 __func__, i);
3622 break;
3623 }
3624
3625 }
3626
3627 return IRQ_RETVAL(i);
3628}
3629
3630static int nv_napi_poll(struct napi_struct *napi, int budget)
3631{
3632 struct fe_priv *np = container_of(napi, struct fe_priv, napi);
3633 struct net_device *dev = np->dev;
3634 u8 __iomem *base = get_hwbase(dev);
3635 unsigned long flags;
3636 int retcode;
3637 int rx_count, tx_work = 0, rx_work = 0;
3638
3639 do {
3640 if (!nv_optimized(np)) {
3641 spin_lock_irqsave(&np->lock, flags);
3642 tx_work += nv_tx_done(dev, np->tx_ring_size);
3643 spin_unlock_irqrestore(&np->lock, flags);
3644
3645 rx_count = nv_rx_process(dev, budget - rx_work);
3646 retcode = nv_alloc_rx(dev);
3647 } else {
3648 spin_lock_irqsave(&np->lock, flags);
3649 tx_work += nv_tx_done_optimized(dev, np->tx_ring_size);
3650 spin_unlock_irqrestore(&np->lock, flags);
3651
3652 rx_count = nv_rx_process_optimized(dev,
3653 budget - rx_work);
3654 retcode = nv_alloc_rx_optimized(dev);
3655 }
3656 } while (retcode == 0 &&
3657 rx_count > 0 && (rx_work += rx_count) < budget);
3658
3659 if (retcode) {
3660 spin_lock_irqsave(&np->lock, flags);
3661 if (!np->in_shutdown)
3662 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3663 spin_unlock_irqrestore(&np->lock, flags);
3664 }
3665
3666 nv_change_interrupt_mode(dev, tx_work + rx_work);
3667
3668 if (unlikely(np->events & NVREG_IRQ_LINK)) {
3669 spin_lock_irqsave(&np->lock, flags);
3670 nv_link_irq(dev);
3671 spin_unlock_irqrestore(&np->lock, flags);
3672 }
3673 if (unlikely(np->need_linktimer && time_after(jiffies, np->link_timeout))) {
3674 spin_lock_irqsave(&np->lock, flags);
3675 nv_linkchange(dev);
3676 spin_unlock_irqrestore(&np->lock, flags);
3677 np->link_timeout = jiffies + LINK_TIMEOUT;
3678 }
3679 if (unlikely(np->events & NVREG_IRQ_RECOVER_ERROR)) {
3680 spin_lock_irqsave(&np->lock, flags);
3681 if (!np->in_shutdown) {
3682 np->nic_poll_irq = np->irqmask;
3683 np->recover_error = 1;
3684 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3685 }
3686 spin_unlock_irqrestore(&np->lock, flags);
3687 napi_complete(napi);
3688 return rx_work;
3689 }
3690
3691 if (rx_work < budget) {
3692 /* re-enable interrupts
3693 (msix not enabled in napi) */
3694 napi_complete(napi);
3695
3696 writel(np->irqmask, base + NvRegIrqMask);
3697 }
3698 return rx_work;
3699}
3700
3701static irqreturn_t nv_nic_irq_rx(int foo, void *data)
3702{
3703 struct net_device *dev = (struct net_device *) data;
3704 struct fe_priv *np = netdev_priv(dev);
3705 u8 __iomem *base = get_hwbase(dev);
3706 u32 events;
3707 int i;
3708 unsigned long flags;
3709
3710 for (i = 0;; i++) {
3711 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_RX_ALL;
3712 writel(events, base + NvRegMSIXIrqStatus);
3713 netdev_dbg(dev, "rx irq events: %08x\n", events);
3714 if (!(events & np->irqmask))
3715 break;
3716
3717 if (nv_rx_process_optimized(dev, RX_WORK_PER_LOOP)) {
3718 if (unlikely(nv_alloc_rx_optimized(dev))) {
3719 spin_lock_irqsave(&np->lock, flags);
3720 if (!np->in_shutdown)
3721 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3722 spin_unlock_irqrestore(&np->lock, flags);
3723 }
3724 }
3725
3726 if (unlikely(i > max_interrupt_work)) {
3727 spin_lock_irqsave(&np->lock, flags);
3728 /* disable interrupts on the nic */
3729 writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
3730 pci_push(base);
3731
3732 if (!np->in_shutdown) {
3733 np->nic_poll_irq |= NVREG_IRQ_RX_ALL;
3734 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3735 }
3736 spin_unlock_irqrestore(&np->lock, flags);
3737 netdev_dbg(dev, "%s: too many iterations (%d)\n",
3738 __func__, i);
3739 break;
3740 }
3741 }
3742
3743 return IRQ_RETVAL(i);
3744}
3745
3746static irqreturn_t nv_nic_irq_other(int foo, void *data)
3747{
3748 struct net_device *dev = (struct net_device *) data;
3749 struct fe_priv *np = netdev_priv(dev);
3750 u8 __iomem *base = get_hwbase(dev);
3751 u32 events;
3752 int i;
3753 unsigned long flags;
3754
3755 for (i = 0;; i++) {
3756 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_OTHER;
3757 writel(events, base + NvRegMSIXIrqStatus);
3758 netdev_dbg(dev, "irq events: %08x\n", events);
3759 if (!(events & np->irqmask))
3760 break;
3761
3762 /* check tx in case we reached max loop limit in tx isr */
3763 spin_lock_irqsave(&np->lock, flags);
3764 nv_tx_done_optimized(dev, TX_WORK_PER_LOOP);
3765 spin_unlock_irqrestore(&np->lock, flags);
3766
3767 if (events & NVREG_IRQ_LINK) {
3768 spin_lock_irqsave(&np->lock, flags);
3769 nv_link_irq(dev);
3770 spin_unlock_irqrestore(&np->lock, flags);
3771 }
3772 if (np->need_linktimer && time_after(jiffies, np->link_timeout)) {
3773 spin_lock_irqsave(&np->lock, flags);
3774 nv_linkchange(dev);
3775 spin_unlock_irqrestore(&np->lock, flags);
3776 np->link_timeout = jiffies + LINK_TIMEOUT;
3777 }
3778 if (events & NVREG_IRQ_RECOVER_ERROR) {
3779 spin_lock_irq(&np->lock);
3780 /* disable interrupts on the nic */
3781 writel(NVREG_IRQ_OTHER, base + NvRegIrqMask);
3782 pci_push(base);
3783
3784 if (!np->in_shutdown) {
3785 np->nic_poll_irq |= NVREG_IRQ_OTHER;
3786 np->recover_error = 1;
3787 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3788 }
3789 spin_unlock_irq(&np->lock);
3790 break;
3791 }
3792 if (unlikely(i > max_interrupt_work)) {
3793 spin_lock_irqsave(&np->lock, flags);
3794 /* disable interrupts on the nic */
3795 writel(NVREG_IRQ_OTHER, base + NvRegIrqMask);
3796 pci_push(base);
3797
3798 if (!np->in_shutdown) {
3799 np->nic_poll_irq |= NVREG_IRQ_OTHER;
3800 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3801 }
3802 spin_unlock_irqrestore(&np->lock, flags);
3803 netdev_dbg(dev, "%s: too many iterations (%d)\n",
3804 __func__, i);
3805 break;
3806 }
3807
3808 }
3809
3810 return IRQ_RETVAL(i);
3811}
3812
3813static irqreturn_t nv_nic_irq_test(int foo, void *data)
3814{
3815 struct net_device *dev = (struct net_device *) data;
3816 struct fe_priv *np = netdev_priv(dev);
3817 u8 __iomem *base = get_hwbase(dev);
3818 u32 events;
3819
3820 if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
3821 events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
3822 writel(events & NVREG_IRQ_TIMER, base + NvRegIrqStatus);
3823 } else {
3824 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
3825 writel(events & NVREG_IRQ_TIMER, base + NvRegMSIXIrqStatus);
3826 }
3827 pci_push(base);
3828 if (!(events & NVREG_IRQ_TIMER))
3829 return IRQ_RETVAL(0);
3830
3831 nv_msi_workaround(np);
3832
3833 spin_lock(&np->lock);
3834 np->intr_test = 1;
3835 spin_unlock(&np->lock);
3836
3837 return IRQ_RETVAL(1);
3838}
3839
3840static void set_msix_vector_map(struct net_device *dev, u32 vector, u32 irqmask)
3841{
3842 u8 __iomem *base = get_hwbase(dev);
3843 int i;
3844 u32 msixmap = 0;
3845
3846 /* Each interrupt bit can be mapped to a MSIX vector (4 bits).
3847 * MSIXMap0 represents the first 8 interrupts and MSIXMap1 represents
3848 * the remaining 8 interrupts.
3849 */
3850 for (i = 0; i < 8; i++) {
3851 if ((irqmask >> i) & 0x1)
3852 msixmap |= vector << (i << 2);
3853 }
3854 writel(readl(base + NvRegMSIXMap0) | msixmap, base + NvRegMSIXMap0);
3855
3856 msixmap = 0;
3857 for (i = 0; i < 8; i++) {
3858 if ((irqmask >> (i + 8)) & 0x1)
3859 msixmap |= vector << (i << 2);
3860 }
3861 writel(readl(base + NvRegMSIXMap1) | msixmap, base + NvRegMSIXMap1);
3862}
3863
3864static int nv_request_irq(struct net_device *dev, int intr_test)
3865{
3866 struct fe_priv *np = get_nvpriv(dev);
3867 u8 __iomem *base = get_hwbase(dev);
3868 int ret = 1;
3869 int i;
3870 irqreturn_t (*handler)(int foo, void *data);
3871
3872 if (intr_test) {
3873 handler = nv_nic_irq_test;
3874 } else {
3875 if (nv_optimized(np))
3876 handler = nv_nic_irq_optimized;
3877 else
3878 handler = nv_nic_irq;
3879 }
3880
3881 if (np->msi_flags & NV_MSI_X_CAPABLE) {
3882 for (i = 0; i < (np->msi_flags & NV_MSI_X_VECTORS_MASK); i++)
3883 np->msi_x_entry[i].entry = i;
3884 ret = pci_enable_msix(np->pci_dev, np->msi_x_entry, (np->msi_flags & NV_MSI_X_VECTORS_MASK));
3885 if (ret == 0) {
3886 np->msi_flags |= NV_MSI_X_ENABLED;
3887 if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT && !intr_test) {
3888 /* Request irq for rx handling */
3889 sprintf(np->name_rx, "%s-rx", dev->name);
3890 if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector,
3891 nv_nic_irq_rx, IRQF_SHARED, np->name_rx, dev) != 0) {
3892 netdev_info(dev,
3893 "request_irq failed for rx %d\n",
3894 ret);
3895 pci_disable_msix(np->pci_dev);
3896 np->msi_flags &= ~NV_MSI_X_ENABLED;
3897 goto out_err;
3898 }
3899 /* Request irq for tx handling */
3900 sprintf(np->name_tx, "%s-tx", dev->name);
3901 if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector,
3902 nv_nic_irq_tx, IRQF_SHARED, np->name_tx, dev) != 0) {
3903 netdev_info(dev,
3904 "request_irq failed for tx %d\n",
3905 ret);
3906 pci_disable_msix(np->pci_dev);
3907 np->msi_flags &= ~NV_MSI_X_ENABLED;
3908 goto out_free_rx;
3909 }
3910 /* Request irq for link and timer handling */
3911 sprintf(np->name_other, "%s-other", dev->name);
3912 if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector,
3913 nv_nic_irq_other, IRQF_SHARED, np->name_other, dev) != 0) {
3914 netdev_info(dev,
3915 "request_irq failed for link %d\n",
3916 ret);
3917 pci_disable_msix(np->pci_dev);
3918 np->msi_flags &= ~NV_MSI_X_ENABLED;
3919 goto out_free_tx;
3920 }
3921 /* map interrupts to their respective vector */
3922 writel(0, base + NvRegMSIXMap0);
3923 writel(0, base + NvRegMSIXMap1);
3924 set_msix_vector_map(dev, NV_MSI_X_VECTOR_RX, NVREG_IRQ_RX_ALL);
3925 set_msix_vector_map(dev, NV_MSI_X_VECTOR_TX, NVREG_IRQ_TX_ALL);
3926 set_msix_vector_map(dev, NV_MSI_X_VECTOR_OTHER, NVREG_IRQ_OTHER);
3927 } else {
3928 /* Request irq for all interrupts */
3929 if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector, handler, IRQF_SHARED, dev->name, dev) != 0) {
3930 netdev_info(dev,
3931 "request_irq failed %d\n",
3932 ret);
3933 pci_disable_msix(np->pci_dev);
3934 np->msi_flags &= ~NV_MSI_X_ENABLED;
3935 goto out_err;
3936 }
3937
3938 /* map interrupts to vector 0 */
3939 writel(0, base + NvRegMSIXMap0);
3940 writel(0, base + NvRegMSIXMap1);
3941 }
3942 netdev_info(dev, "MSI-X enabled\n");
3943 }
3944 }
3945 if (ret != 0 && np->msi_flags & NV_MSI_CAPABLE) {
3946 ret = pci_enable_msi(np->pci_dev);
3947 if (ret == 0) {
3948 np->msi_flags |= NV_MSI_ENABLED;
3949 if (request_irq(np->pci_dev->irq, handler, IRQF_SHARED, dev->name, dev) != 0) {
3950 netdev_info(dev, "request_irq failed %d\n",
3951 ret);
3952 pci_disable_msi(np->pci_dev);
3953 np->msi_flags &= ~NV_MSI_ENABLED;
3954 goto out_err;
3955 }
3956
3957 /* map interrupts to vector 0 */
3958 writel(0, base + NvRegMSIMap0);
3959 writel(0, base + NvRegMSIMap1);
3960 /* enable msi vector 0 */
3961 writel(NVREG_MSI_VECTOR_0_ENABLED, base + NvRegMSIIrqMask);
3962 netdev_info(dev, "MSI enabled\n");
3963 }
3964 }
3965 if (ret != 0) {
3966 if (request_irq(np->pci_dev->irq, handler, IRQF_SHARED, dev->name, dev) != 0)
3967 goto out_err;
3968
3969 }
3970
3971 return 0;
3972out_free_tx:
3973 free_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector, dev);
3974out_free_rx:
3975 free_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector, dev);
3976out_err:
3977 return 1;
3978}
3979
3980static void nv_free_irq(struct net_device *dev)
3981{
3982 struct fe_priv *np = get_nvpriv(dev);
3983 int i;
3984
3985 if (np->msi_flags & NV_MSI_X_ENABLED) {
3986 for (i = 0; i < (np->msi_flags & NV_MSI_X_VECTORS_MASK); i++)
3987 free_irq(np->msi_x_entry[i].vector, dev);
3988 pci_disable_msix(np->pci_dev);
3989 np->msi_flags &= ~NV_MSI_X_ENABLED;
3990 } else {
3991 free_irq(np->pci_dev->irq, dev);
3992 if (np->msi_flags & NV_MSI_ENABLED) {
3993 pci_disable_msi(np->pci_dev);
3994 np->msi_flags &= ~NV_MSI_ENABLED;
3995 }
3996 }
3997}
3998
3999static void nv_do_nic_poll(unsigned long data)
4000{
4001 struct net_device *dev = (struct net_device *) data;
4002 struct fe_priv *np = netdev_priv(dev);
4003 u8 __iomem *base = get_hwbase(dev);
4004 u32 mask = 0;
4005
4006 /*
4007 * First disable irq(s) and then
4008 * reenable interrupts on the nic, we have to do this before calling
4009 * nv_nic_irq because that may decide to do otherwise
4010 */
4011
4012 if (!using_multi_irqs(dev)) {
4013 if (np->msi_flags & NV_MSI_X_ENABLED)
4014 disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
4015 else
4016 disable_irq_lockdep(np->pci_dev->irq);
4017 mask = np->irqmask;
4018 } else {
4019 if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
4020 disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
4021 mask |= NVREG_IRQ_RX_ALL;
4022 }
4023 if (np->nic_poll_irq & NVREG_IRQ_TX_ALL) {
4024 disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
4025 mask |= NVREG_IRQ_TX_ALL;
4026 }
4027 if (np->nic_poll_irq & NVREG_IRQ_OTHER) {
4028 disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
4029 mask |= NVREG_IRQ_OTHER;
4030 }
4031 }
4032 /* disable_irq() contains synchronize_irq, thus no irq handler can run now */
4033
4034 if (np->recover_error) {
4035 np->recover_error = 0;
4036 netdev_info(dev, "MAC in recoverable error state\n");
4037 if (netif_running(dev)) {
4038 netif_tx_lock_bh(dev);
4039 netif_addr_lock(dev);
4040 spin_lock(&np->lock);
4041 /* stop engines */
4042 nv_stop_rxtx(dev);
4043 if (np->driver_data & DEV_HAS_POWER_CNTRL)
4044 nv_mac_reset(dev);
4045 nv_txrx_reset(dev);
4046 /* drain rx queue */
4047 nv_drain_rxtx(dev);
4048 /* reinit driver view of the rx queue */
4049 set_bufsize(dev);
4050 if (nv_init_ring(dev)) {
4051 if (!np->in_shutdown)
4052 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
4053 }
4054 /* reinit nic view of the rx queue */
4055 writel(np->rx_buf_sz, base + NvRegOffloadConfig);
4056 setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
4057 writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
4058 base + NvRegRingSizes);
4059 pci_push(base);
4060 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4061 pci_push(base);
4062 /* clear interrupts */
4063 if (!(np->msi_flags & NV_MSI_X_ENABLED))
4064 writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
4065 else
4066 writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
4067
4068 /* restart rx engine */
4069 nv_start_rxtx(dev);
4070 spin_unlock(&np->lock);
4071 netif_addr_unlock(dev);
4072 netif_tx_unlock_bh(dev);
4073 }
4074 }
4075
4076 writel(mask, base + NvRegIrqMask);
4077 pci_push(base);
4078
4079 if (!using_multi_irqs(dev)) {
4080 np->nic_poll_irq = 0;
4081 if (nv_optimized(np))
4082 nv_nic_irq_optimized(0, dev);
4083 else
4084 nv_nic_irq(0, dev);
4085 if (np->msi_flags & NV_MSI_X_ENABLED)
4086 enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
4087 else
4088 enable_irq_lockdep(np->pci_dev->irq);
4089 } else {
4090 if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
4091 np->nic_poll_irq &= ~NVREG_IRQ_RX_ALL;
4092 nv_nic_irq_rx(0, dev);
4093 enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
4094 }
4095 if (np->nic_poll_irq & NVREG_IRQ_TX_ALL) {
4096 np->nic_poll_irq &= ~NVREG_IRQ_TX_ALL;
4097 nv_nic_irq_tx(0, dev);
4098 enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
4099 }
4100 if (np->nic_poll_irq & NVREG_IRQ_OTHER) {
4101 np->nic_poll_irq &= ~NVREG_IRQ_OTHER;
4102 nv_nic_irq_other(0, dev);
4103 enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
4104 }
4105 }
4106
4107}
4108
4109#ifdef CONFIG_NET_POLL_CONTROLLER
4110static void nv_poll_controller(struct net_device *dev)
4111{
4112 nv_do_nic_poll((unsigned long) dev);
4113}
4114#endif
4115
4116static void nv_do_stats_poll(unsigned long data)
4117 __acquires(&netdev_priv(dev)->hwstats_lock)
4118 __releases(&netdev_priv(dev)->hwstats_lock)
4119{
4120 struct net_device *dev = (struct net_device *) data;
4121 struct fe_priv *np = netdev_priv(dev);
4122
4123 /* If lock is currently taken, the stats are being refreshed
4124 * and hence fresh enough */
4125 if (spin_trylock(&np->hwstats_lock)) {
4126 nv_update_stats(dev);
4127 spin_unlock(&np->hwstats_lock);
4128 }
4129
4130 if (!np->in_shutdown)
4131 mod_timer(&np->stats_poll,
4132 round_jiffies(jiffies + STATS_INTERVAL));
4133}
4134
4135static void nv_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
4136{
4137 struct fe_priv *np = netdev_priv(dev);
4138 strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
4139 strlcpy(info->version, FORCEDETH_VERSION, sizeof(info->version));
4140 strlcpy(info->bus_info, pci_name(np->pci_dev), sizeof(info->bus_info));
4141}
4142
4143static void nv_get_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
4144{
4145 struct fe_priv *np = netdev_priv(dev);
4146 wolinfo->supported = WAKE_MAGIC;
4147
4148 spin_lock_irq(&np->lock);
4149 if (np->wolenabled)
4150 wolinfo->wolopts = WAKE_MAGIC;
4151 spin_unlock_irq(&np->lock);
4152}
4153
4154static int nv_set_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
4155{
4156 struct fe_priv *np = netdev_priv(dev);
4157 u8 __iomem *base = get_hwbase(dev);
4158 u32 flags = 0;
4159
4160 if (wolinfo->wolopts == 0) {
4161 np->wolenabled = 0;
4162 } else if (wolinfo->wolopts & WAKE_MAGIC) {
4163 np->wolenabled = 1;
4164 flags = NVREG_WAKEUPFLAGS_ENABLE;
4165 }
4166 if (netif_running(dev)) {
4167 spin_lock_irq(&np->lock);
4168 writel(flags, base + NvRegWakeUpFlags);
4169 spin_unlock_irq(&np->lock);
4170 }
4171 device_set_wakeup_enable(&np->pci_dev->dev, np->wolenabled);
4172 return 0;
4173}
4174
4175static int nv_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
4176{
4177 struct fe_priv *np = netdev_priv(dev);
4178 u32 speed;
4179 int adv;
4180
4181 spin_lock_irq(&np->lock);
4182 ecmd->port = PORT_MII;
4183 if (!netif_running(dev)) {
4184 /* We do not track link speed / duplex setting if the
4185 * interface is disabled. Force a link check */
4186 if (nv_update_linkspeed(dev)) {
4187 if (!netif_carrier_ok(dev))
4188 netif_carrier_on(dev);
4189 } else {
4190 if (netif_carrier_ok(dev))
4191 netif_carrier_off(dev);
4192 }
4193 }
4194
4195 if (netif_carrier_ok(dev)) {
4196 switch (np->linkspeed & (NVREG_LINKSPEED_MASK)) {
4197 case NVREG_LINKSPEED_10:
4198 speed = SPEED_10;
4199 break;
4200 case NVREG_LINKSPEED_100:
4201 speed = SPEED_100;
4202 break;
4203 case NVREG_LINKSPEED_1000:
4204 speed = SPEED_1000;
4205 break;
4206 default:
4207 speed = -1;
4208 break;
4209 }
4210 ecmd->duplex = DUPLEX_HALF;
4211 if (np->duplex)
4212 ecmd->duplex = DUPLEX_FULL;
4213 } else {
4214 speed = -1;
4215 ecmd->duplex = -1;
4216 }
4217 ethtool_cmd_speed_set(ecmd, speed);
4218 ecmd->autoneg = np->autoneg;
4219
4220 ecmd->advertising = ADVERTISED_MII;
4221 if (np->autoneg) {
4222 ecmd->advertising |= ADVERTISED_Autoneg;
4223 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4224 if (adv & ADVERTISE_10HALF)
4225 ecmd->advertising |= ADVERTISED_10baseT_Half;
4226 if (adv & ADVERTISE_10FULL)
4227 ecmd->advertising |= ADVERTISED_10baseT_Full;
4228 if (adv & ADVERTISE_100HALF)
4229 ecmd->advertising |= ADVERTISED_100baseT_Half;
4230 if (adv & ADVERTISE_100FULL)
4231 ecmd->advertising |= ADVERTISED_100baseT_Full;
4232 if (np->gigabit == PHY_GIGABIT) {
4233 adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
4234 if (adv & ADVERTISE_1000FULL)
4235 ecmd->advertising |= ADVERTISED_1000baseT_Full;
4236 }
4237 }
4238 ecmd->supported = (SUPPORTED_Autoneg |
4239 SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
4240 SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
4241 SUPPORTED_MII);
4242 if (np->gigabit == PHY_GIGABIT)
4243 ecmd->supported |= SUPPORTED_1000baseT_Full;
4244
4245 ecmd->phy_address = np->phyaddr;
4246 ecmd->transceiver = XCVR_EXTERNAL;
4247
4248 /* ignore maxtxpkt, maxrxpkt for now */
4249 spin_unlock_irq(&np->lock);
4250 return 0;
4251}
4252
4253static int nv_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
4254{
4255 struct fe_priv *np = netdev_priv(dev);
4256 u32 speed = ethtool_cmd_speed(ecmd);
4257
4258 if (ecmd->port != PORT_MII)
4259 return -EINVAL;
4260 if (ecmd->transceiver != XCVR_EXTERNAL)
4261 return -EINVAL;
4262 if (ecmd->phy_address != np->phyaddr) {
4263 /* TODO: support switching between multiple phys. Should be
4264 * trivial, but not enabled due to lack of test hardware. */
4265 return -EINVAL;
4266 }
4267 if (ecmd->autoneg == AUTONEG_ENABLE) {
4268 u32 mask;
4269
4270 mask = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full |
4271 ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
4272 if (np->gigabit == PHY_GIGABIT)
4273 mask |= ADVERTISED_1000baseT_Full;
4274
4275 if ((ecmd->advertising & mask) == 0)
4276 return -EINVAL;
4277
4278 } else if (ecmd->autoneg == AUTONEG_DISABLE) {
4279 /* Note: autonegotiation disable, speed 1000 intentionally
4280 * forbidden - no one should need that. */
4281
4282 if (speed != SPEED_10 && speed != SPEED_100)
4283 return -EINVAL;
4284 if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL)
4285 return -EINVAL;
4286 } else {
4287 return -EINVAL;
4288 }
4289
4290 netif_carrier_off(dev);
4291 if (netif_running(dev)) {
4292 unsigned long flags;
4293
4294 nv_disable_irq(dev);
4295 netif_tx_lock_bh(dev);
4296 netif_addr_lock(dev);
4297 /* with plain spinlock lockdep complains */
4298 spin_lock_irqsave(&np->lock, flags);
4299 /* stop engines */
4300 /* FIXME:
4301 * this can take some time, and interrupts are disabled
4302 * due to spin_lock_irqsave, but let's hope no daemon
4303 * is going to change the settings very often...
4304 * Worst case:
4305 * NV_RXSTOP_DELAY1MAX + NV_TXSTOP_DELAY1MAX
4306 * + some minor delays, which is up to a second approximately
4307 */
4308 nv_stop_rxtx(dev);
4309 spin_unlock_irqrestore(&np->lock, flags);
4310 netif_addr_unlock(dev);
4311 netif_tx_unlock_bh(dev);
4312 }
4313
4314 if (ecmd->autoneg == AUTONEG_ENABLE) {
4315 int adv, bmcr;
4316
4317 np->autoneg = 1;
4318
4319 /* advertise only what has been requested */
4320 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4321 adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
4322 if (ecmd->advertising & ADVERTISED_10baseT_Half)
4323 adv |= ADVERTISE_10HALF;
4324 if (ecmd->advertising & ADVERTISED_10baseT_Full)
4325 adv |= ADVERTISE_10FULL;
4326 if (ecmd->advertising & ADVERTISED_100baseT_Half)
4327 adv |= ADVERTISE_100HALF;
4328 if (ecmd->advertising & ADVERTISED_100baseT_Full)
4329 adv |= ADVERTISE_100FULL;
4330 if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) /* for rx we set both advertisements but disable tx pause */
4331 adv |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
4332 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
4333 adv |= ADVERTISE_PAUSE_ASYM;
4334 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
4335
4336 if (np->gigabit == PHY_GIGABIT) {
4337 adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
4338 adv &= ~ADVERTISE_1000FULL;
4339 if (ecmd->advertising & ADVERTISED_1000baseT_Full)
4340 adv |= ADVERTISE_1000FULL;
4341 mii_rw(dev, np->phyaddr, MII_CTRL1000, adv);
4342 }
4343
4344 if (netif_running(dev))
4345 netdev_info(dev, "link down\n");
4346 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4347 if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
4348 bmcr |= BMCR_ANENABLE;
4349 /* reset the phy in order for settings to stick,
4350 * and cause autoneg to start */
4351 if (phy_reset(dev, bmcr)) {
4352 netdev_info(dev, "phy reset failed\n");
4353 return -EINVAL;
4354 }
4355 } else {
4356 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
4357 mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4358 }
4359 } else {
4360 int adv, bmcr;
4361
4362 np->autoneg = 0;
4363
4364 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4365 adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
4366 if (speed == SPEED_10 && ecmd->duplex == DUPLEX_HALF)
4367 adv |= ADVERTISE_10HALF;
4368 if (speed == SPEED_10 && ecmd->duplex == DUPLEX_FULL)
4369 adv |= ADVERTISE_10FULL;
4370 if (speed == SPEED_100 && ecmd->duplex == DUPLEX_HALF)
4371 adv |= ADVERTISE_100HALF;
4372 if (speed == SPEED_100 && ecmd->duplex == DUPLEX_FULL)
4373 adv |= ADVERTISE_100FULL;
4374 np->pause_flags &= ~(NV_PAUSEFRAME_AUTONEG|NV_PAUSEFRAME_RX_ENABLE|NV_PAUSEFRAME_TX_ENABLE);
4375 if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) {/* for rx we set both advertisements but disable tx pause */
4376 adv |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
4377 np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
4378 }
4379 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ) {
4380 adv |= ADVERTISE_PAUSE_ASYM;
4381 np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
4382 }
4383 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
4384 np->fixed_mode = adv;
4385
4386 if (np->gigabit == PHY_GIGABIT) {
4387 adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
4388 adv &= ~ADVERTISE_1000FULL;
4389 mii_rw(dev, np->phyaddr, MII_CTRL1000, adv);
4390 }
4391
4392 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4393 bmcr &= ~(BMCR_ANENABLE|BMCR_SPEED100|BMCR_SPEED1000|BMCR_FULLDPLX);
4394 if (np->fixed_mode & (ADVERTISE_10FULL|ADVERTISE_100FULL))
4395 bmcr |= BMCR_FULLDPLX;
4396 if (np->fixed_mode & (ADVERTISE_100HALF|ADVERTISE_100FULL))
4397 bmcr |= BMCR_SPEED100;
4398 if (np->phy_oui == PHY_OUI_MARVELL) {
4399 /* reset the phy in order for forced mode settings to stick */
4400 if (phy_reset(dev, bmcr)) {
4401 netdev_info(dev, "phy reset failed\n");
4402 return -EINVAL;
4403 }
4404 } else {
4405 mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4406 if (netif_running(dev)) {
4407 /* Wait a bit and then reconfigure the nic. */
4408 udelay(10);
4409 nv_linkchange(dev);
4410 }
4411 }
4412 }
4413
4414 if (netif_running(dev)) {
4415 nv_start_rxtx(dev);
4416 nv_enable_irq(dev);
4417 }
4418
4419 return 0;
4420}
4421
4422#define FORCEDETH_REGS_VER 1
4423
4424static int nv_get_regs_len(struct net_device *dev)
4425{
4426 struct fe_priv *np = netdev_priv(dev);
4427 return np->register_size;
4428}
4429
4430static void nv_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *buf)
4431{
4432 struct fe_priv *np = netdev_priv(dev);
4433 u8 __iomem *base = get_hwbase(dev);
4434 u32 *rbuf = buf;
4435 int i;
4436
4437 regs->version = FORCEDETH_REGS_VER;
4438 spin_lock_irq(&np->lock);
4439 for (i = 0; i <= np->register_size/sizeof(u32); i++)
4440 rbuf[i] = readl(base + i*sizeof(u32));
4441 spin_unlock_irq(&np->lock);
4442}
4443
4444static int nv_nway_reset(struct net_device *dev)
4445{
4446 struct fe_priv *np = netdev_priv(dev);
4447 int ret;
4448
4449 if (np->autoneg) {
4450 int bmcr;
4451
4452 netif_carrier_off(dev);
4453 if (netif_running(dev)) {
4454 nv_disable_irq(dev);
4455 netif_tx_lock_bh(dev);
4456 netif_addr_lock(dev);
4457 spin_lock(&np->lock);
4458 /* stop engines */
4459 nv_stop_rxtx(dev);
4460 spin_unlock(&np->lock);
4461 netif_addr_unlock(dev);
4462 netif_tx_unlock_bh(dev);
4463 netdev_info(dev, "link down\n");
4464 }
4465
4466 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4467 if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
4468 bmcr |= BMCR_ANENABLE;
4469 /* reset the phy in order for settings to stick*/
4470 if (phy_reset(dev, bmcr)) {
4471 netdev_info(dev, "phy reset failed\n");
4472 return -EINVAL;
4473 }
4474 } else {
4475 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
4476 mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4477 }
4478
4479 if (netif_running(dev)) {
4480 nv_start_rxtx(dev);
4481 nv_enable_irq(dev);
4482 }
4483 ret = 0;
4484 } else {
4485 ret = -EINVAL;
4486 }
4487
4488 return ret;
4489}
4490
4491static void nv_get_ringparam(struct net_device *dev, struct ethtool_ringparam* ring)
4492{
4493 struct fe_priv *np = netdev_priv(dev);
4494
4495 ring->rx_max_pending = (np->desc_ver == DESC_VER_1) ? RING_MAX_DESC_VER_1 : RING_MAX_DESC_VER_2_3;
4496 ring->tx_max_pending = (np->desc_ver == DESC_VER_1) ? RING_MAX_DESC_VER_1 : RING_MAX_DESC_VER_2_3;
4497
4498 ring->rx_pending = np->rx_ring_size;
4499 ring->tx_pending = np->tx_ring_size;
4500}
4501
4502static int nv_set_ringparam(struct net_device *dev, struct ethtool_ringparam* ring)
4503{
4504 struct fe_priv *np = netdev_priv(dev);
4505 u8 __iomem *base = get_hwbase(dev);
4506 u8 *rxtx_ring, *rx_skbuff, *tx_skbuff;
4507 dma_addr_t ring_addr;
4508
4509 if (ring->rx_pending < RX_RING_MIN ||
4510 ring->tx_pending < TX_RING_MIN ||
4511 ring->rx_mini_pending != 0 ||
4512 ring->rx_jumbo_pending != 0 ||
4513 (np->desc_ver == DESC_VER_1 &&
4514 (ring->rx_pending > RING_MAX_DESC_VER_1 ||
4515 ring->tx_pending > RING_MAX_DESC_VER_1)) ||
4516 (np->desc_ver != DESC_VER_1 &&
4517 (ring->rx_pending > RING_MAX_DESC_VER_2_3 ||
4518 ring->tx_pending > RING_MAX_DESC_VER_2_3))) {
4519 return -EINVAL;
4520 }
4521
4522 /* allocate new rings */
4523 if (!nv_optimized(np)) {
4524 rxtx_ring = pci_alloc_consistent(np->pci_dev,
4525 sizeof(struct ring_desc) * (ring->rx_pending + ring->tx_pending),
4526 &ring_addr);
4527 } else {
4528 rxtx_ring = pci_alloc_consistent(np->pci_dev,
4529 sizeof(struct ring_desc_ex) * (ring->rx_pending + ring->tx_pending),
4530 &ring_addr);
4531 }
4532 rx_skbuff = kmalloc(sizeof(struct nv_skb_map) * ring->rx_pending, GFP_KERNEL);
4533 tx_skbuff = kmalloc(sizeof(struct nv_skb_map) * ring->tx_pending, GFP_KERNEL);
4534 if (!rxtx_ring || !rx_skbuff || !tx_skbuff) {
4535 /* fall back to old rings */
4536 if (!nv_optimized(np)) {
4537 if (rxtx_ring)
4538 pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (ring->rx_pending + ring->tx_pending),
4539 rxtx_ring, ring_addr);
4540 } else {
4541 if (rxtx_ring)
4542 pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (ring->rx_pending + ring->tx_pending),
4543 rxtx_ring, ring_addr);
4544 }
4545
4546 kfree(rx_skbuff);
4547 kfree(tx_skbuff);
4548 goto exit;
4549 }
4550
4551 if (netif_running(dev)) {
4552 nv_disable_irq(dev);
4553 nv_napi_disable(dev);
4554 netif_tx_lock_bh(dev);
4555 netif_addr_lock(dev);
4556 spin_lock(&np->lock);
4557 /* stop engines */
4558 nv_stop_rxtx(dev);
4559 nv_txrx_reset(dev);
4560 /* drain queues */
4561 nv_drain_rxtx(dev);
4562 /* delete queues */
4563 free_rings(dev);
4564 }
4565
4566 /* set new values */
4567 np->rx_ring_size = ring->rx_pending;
4568 np->tx_ring_size = ring->tx_pending;
4569
4570 if (!nv_optimized(np)) {
4571 np->rx_ring.orig = (struct ring_desc *)rxtx_ring;
4572 np->tx_ring.orig = &np->rx_ring.orig[np->rx_ring_size];
4573 } else {
4574 np->rx_ring.ex = (struct ring_desc_ex *)rxtx_ring;
4575 np->tx_ring.ex = &np->rx_ring.ex[np->rx_ring_size];
4576 }
4577 np->rx_skb = (struct nv_skb_map *)rx_skbuff;
4578 np->tx_skb = (struct nv_skb_map *)tx_skbuff;
4579 np->ring_addr = ring_addr;
4580
4581 memset(np->rx_skb, 0, sizeof(struct nv_skb_map) * np->rx_ring_size);
4582 memset(np->tx_skb, 0, sizeof(struct nv_skb_map) * np->tx_ring_size);
4583
4584 if (netif_running(dev)) {
4585 /* reinit driver view of the queues */
4586 set_bufsize(dev);
4587 if (nv_init_ring(dev)) {
4588 if (!np->in_shutdown)
4589 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
4590 }
4591
4592 /* reinit nic view of the queues */
4593 writel(np->rx_buf_sz, base + NvRegOffloadConfig);
4594 setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
4595 writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
4596 base + NvRegRingSizes);
4597 pci_push(base);
4598 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4599 pci_push(base);
4600
4601 /* restart engines */
4602 nv_start_rxtx(dev);
4603 spin_unlock(&np->lock);
4604 netif_addr_unlock(dev);
4605 netif_tx_unlock_bh(dev);
4606 nv_napi_enable(dev);
4607 nv_enable_irq(dev);
4608 }
4609 return 0;
4610exit:
4611 return -ENOMEM;
4612}
4613
4614static void nv_get_pauseparam(struct net_device *dev, struct ethtool_pauseparam* pause)
4615{
4616 struct fe_priv *np = netdev_priv(dev);
4617
4618 pause->autoneg = (np->pause_flags & NV_PAUSEFRAME_AUTONEG) != 0;
4619 pause->rx_pause = (np->pause_flags & NV_PAUSEFRAME_RX_ENABLE) != 0;
4620 pause->tx_pause = (np->pause_flags & NV_PAUSEFRAME_TX_ENABLE) != 0;
4621}
4622
4623static int nv_set_pauseparam(struct net_device *dev, struct ethtool_pauseparam* pause)
4624{
4625 struct fe_priv *np = netdev_priv(dev);
4626 int adv, bmcr;
4627
4628 if ((!np->autoneg && np->duplex == 0) ||
4629 (np->autoneg && !pause->autoneg && np->duplex == 0)) {
4630 netdev_info(dev, "can not set pause settings when forced link is in half duplex\n");
4631 return -EINVAL;
4632 }
4633 if (pause->tx_pause && !(np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE)) {
4634 netdev_info(dev, "hardware does not support tx pause frames\n");
4635 return -EINVAL;
4636 }
4637
4638 netif_carrier_off(dev);
4639 if (netif_running(dev)) {
4640 nv_disable_irq(dev);
4641 netif_tx_lock_bh(dev);
4642 netif_addr_lock(dev);
4643 spin_lock(&np->lock);
4644 /* stop engines */
4645 nv_stop_rxtx(dev);
4646 spin_unlock(&np->lock);
4647 netif_addr_unlock(dev);
4648 netif_tx_unlock_bh(dev);
4649 }
4650
4651 np->pause_flags &= ~(NV_PAUSEFRAME_RX_REQ|NV_PAUSEFRAME_TX_REQ);
4652 if (pause->rx_pause)
4653 np->pause_flags |= NV_PAUSEFRAME_RX_REQ;
4654 if (pause->tx_pause)
4655 np->pause_flags |= NV_PAUSEFRAME_TX_REQ;
4656
4657 if (np->autoneg && pause->autoneg) {
4658 np->pause_flags |= NV_PAUSEFRAME_AUTONEG;
4659
4660 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4661 adv &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
4662 if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) /* for rx we set both advertisements but disable tx pause */
4663 adv |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
4664 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
4665 adv |= ADVERTISE_PAUSE_ASYM;
4666 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
4667
4668 if (netif_running(dev))
4669 netdev_info(dev, "link down\n");
4670 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4671 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
4672 mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4673 } else {
4674 np->pause_flags &= ~(NV_PAUSEFRAME_AUTONEG|NV_PAUSEFRAME_RX_ENABLE|NV_PAUSEFRAME_TX_ENABLE);
4675 if (pause->rx_pause)
4676 np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
4677 if (pause->tx_pause)
4678 np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
4679
4680 if (!netif_running(dev))
4681 nv_update_linkspeed(dev);
4682 else
4683 nv_update_pause(dev, np->pause_flags);
4684 }
4685
4686 if (netif_running(dev)) {
4687 nv_start_rxtx(dev);
4688 nv_enable_irq(dev);
4689 }
4690 return 0;
4691}
4692
4693static int nv_set_loopback(struct net_device *dev, netdev_features_t features)
4694{
4695 struct fe_priv *np = netdev_priv(dev);
4696 unsigned long flags;
4697 u32 miicontrol;
4698 int err, retval = 0;
4699
4700 spin_lock_irqsave(&np->lock, flags);
4701 miicontrol = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4702 if (features & NETIF_F_LOOPBACK) {
4703 if (miicontrol & BMCR_LOOPBACK) {
4704 spin_unlock_irqrestore(&np->lock, flags);
4705 netdev_info(dev, "Loopback already enabled\n");
4706 return 0;
4707 }
4708 nv_disable_irq(dev);
4709 /* Turn on loopback mode */
4710 miicontrol |= BMCR_LOOPBACK | BMCR_FULLDPLX | BMCR_SPEED1000;
4711 err = mii_rw(dev, np->phyaddr, MII_BMCR, miicontrol);
4712 if (err) {
4713 retval = PHY_ERROR;
4714 spin_unlock_irqrestore(&np->lock, flags);
4715 phy_init(dev);
4716 } else {
4717 if (netif_running(dev)) {
4718 /* Force 1000 Mbps full-duplex */
4719 nv_force_linkspeed(dev, NVREG_LINKSPEED_1000,
4720 1);
4721 /* Force link up */
4722 netif_carrier_on(dev);
4723 }
4724 spin_unlock_irqrestore(&np->lock, flags);
4725 netdev_info(dev,
4726 "Internal PHY loopback mode enabled.\n");
4727 }
4728 } else {
4729 if (!(miicontrol & BMCR_LOOPBACK)) {
4730 spin_unlock_irqrestore(&np->lock, flags);
4731 netdev_info(dev, "Loopback already disabled\n");
4732 return 0;
4733 }
4734 nv_disable_irq(dev);
4735 /* Turn off loopback */
4736 spin_unlock_irqrestore(&np->lock, flags);
4737 netdev_info(dev, "Internal PHY loopback mode disabled.\n");
4738 phy_init(dev);
4739 }
4740 msleep(500);
4741 spin_lock_irqsave(&np->lock, flags);
4742 nv_enable_irq(dev);
4743 spin_unlock_irqrestore(&np->lock, flags);
4744
4745 return retval;
4746}
4747
4748static netdev_features_t nv_fix_features(struct net_device *dev,
4749 netdev_features_t features)
4750{
4751 /* vlan is dependent on rx checksum offload */
4752 if (features & (NETIF_F_HW_VLAN_TX|NETIF_F_HW_VLAN_RX))
4753 features |= NETIF_F_RXCSUM;
4754
4755 return features;
4756}
4757
4758static void nv_vlan_mode(struct net_device *dev, netdev_features_t features)
4759{
4760 struct fe_priv *np = get_nvpriv(dev);
4761
4762 spin_lock_irq(&np->lock);
4763
4764 if (features & NETIF_F_HW_VLAN_RX)
4765 np->txrxctl_bits |= NVREG_TXRXCTL_VLANSTRIP;
4766 else
4767 np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANSTRIP;
4768
4769 if (features & NETIF_F_HW_VLAN_TX)
4770 np->txrxctl_bits |= NVREG_TXRXCTL_VLANINS;
4771 else
4772 np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANINS;
4773
4774 writel(np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4775
4776 spin_unlock_irq(&np->lock);
4777}
4778
4779static int nv_set_features(struct net_device *dev, netdev_features_t features)
4780{
4781 struct fe_priv *np = netdev_priv(dev);
4782 u8 __iomem *base = get_hwbase(dev);
4783 netdev_features_t changed = dev->features ^ features;
4784 int retval;
4785
4786 if ((changed & NETIF_F_LOOPBACK) && netif_running(dev)) {
4787 retval = nv_set_loopback(dev, features);
4788 if (retval != 0)
4789 return retval;
4790 }
4791
4792 if (changed & NETIF_F_RXCSUM) {
4793 spin_lock_irq(&np->lock);
4794
4795 if (features & NETIF_F_RXCSUM)
4796 np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
4797 else
4798 np->txrxctl_bits &= ~NVREG_TXRXCTL_RXCHECK;
4799
4800 if (netif_running(dev))
4801 writel(np->txrxctl_bits, base + NvRegTxRxControl);
4802
4803 spin_unlock_irq(&np->lock);
4804 }
4805
4806 if (changed & (NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX))
4807 nv_vlan_mode(dev, features);
4808
4809 return 0;
4810}
4811
4812static int nv_get_sset_count(struct net_device *dev, int sset)
4813{
4814 struct fe_priv *np = netdev_priv(dev);
4815
4816 switch (sset) {
4817 case ETH_SS_TEST:
4818 if (np->driver_data & DEV_HAS_TEST_EXTENDED)
4819 return NV_TEST_COUNT_EXTENDED;
4820 else
4821 return NV_TEST_COUNT_BASE;
4822 case ETH_SS_STATS:
4823 if (np->driver_data & DEV_HAS_STATISTICS_V3)
4824 return NV_DEV_STATISTICS_V3_COUNT;
4825 else if (np->driver_data & DEV_HAS_STATISTICS_V2)
4826 return NV_DEV_STATISTICS_V2_COUNT;
4827 else if (np->driver_data & DEV_HAS_STATISTICS_V1)
4828 return NV_DEV_STATISTICS_V1_COUNT;
4829 else
4830 return 0;
4831 default:
4832 return -EOPNOTSUPP;
4833 }
4834}
4835
4836static void nv_get_ethtool_stats(struct net_device *dev,
4837 struct ethtool_stats *estats, u64 *buffer)
4838 __acquires(&netdev_priv(dev)->hwstats_lock)
4839 __releases(&netdev_priv(dev)->hwstats_lock)
4840{
4841 struct fe_priv *np = netdev_priv(dev);
4842
4843 spin_lock_bh(&np->hwstats_lock);
4844 nv_update_stats(dev);
4845 memcpy(buffer, &np->estats,
4846 nv_get_sset_count(dev, ETH_SS_STATS)*sizeof(u64));
4847 spin_unlock_bh(&np->hwstats_lock);
4848}
4849
4850static int nv_link_test(struct net_device *dev)
4851{
4852 struct fe_priv *np = netdev_priv(dev);
4853 int mii_status;
4854
4855 mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
4856 mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
4857
4858 /* check phy link status */
4859 if (!(mii_status & BMSR_LSTATUS))
4860 return 0;
4861 else
4862 return 1;
4863}
4864
4865static int nv_register_test(struct net_device *dev)
4866{
4867 u8 __iomem *base = get_hwbase(dev);
4868 int i = 0;
4869 u32 orig_read, new_read;
4870
4871 do {
4872 orig_read = readl(base + nv_registers_test[i].reg);
4873
4874 /* xor with mask to toggle bits */
4875 orig_read ^= nv_registers_test[i].mask;
4876
4877 writel(orig_read, base + nv_registers_test[i].reg);
4878
4879 new_read = readl(base + nv_registers_test[i].reg);
4880
4881 if ((new_read & nv_registers_test[i].mask) != (orig_read & nv_registers_test[i].mask))
4882 return 0;
4883
4884 /* restore original value */
4885 orig_read ^= nv_registers_test[i].mask;
4886 writel(orig_read, base + nv_registers_test[i].reg);
4887
4888 } while (nv_registers_test[++i].reg != 0);
4889
4890 return 1;
4891}
4892
4893static int nv_interrupt_test(struct net_device *dev)
4894{
4895 struct fe_priv *np = netdev_priv(dev);
4896 u8 __iomem *base = get_hwbase(dev);
4897 int ret = 1;
4898 int testcnt;
4899 u32 save_msi_flags, save_poll_interval = 0;
4900
4901 if (netif_running(dev)) {
4902 /* free current irq */
4903 nv_free_irq(dev);
4904 save_poll_interval = readl(base+NvRegPollingInterval);
4905 }
4906
4907 /* flag to test interrupt handler */
4908 np->intr_test = 0;
4909
4910 /* setup test irq */
4911 save_msi_flags = np->msi_flags;
4912 np->msi_flags &= ~NV_MSI_X_VECTORS_MASK;
4913 np->msi_flags |= 0x001; /* setup 1 vector */
4914 if (nv_request_irq(dev, 1))
4915 return 0;
4916
4917 /* setup timer interrupt */
4918 writel(NVREG_POLL_DEFAULT_CPU, base + NvRegPollingInterval);
4919 writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
4920
4921 nv_enable_hw_interrupts(dev, NVREG_IRQ_TIMER);
4922
4923 /* wait for at least one interrupt */
4924 msleep(100);
4925
4926 spin_lock_irq(&np->lock);
4927
4928 /* flag should be set within ISR */
4929 testcnt = np->intr_test;
4930 if (!testcnt)
4931 ret = 2;
4932
4933 nv_disable_hw_interrupts(dev, NVREG_IRQ_TIMER);
4934 if (!(np->msi_flags & NV_MSI_X_ENABLED))
4935 writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
4936 else
4937 writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
4938
4939 spin_unlock_irq(&np->lock);
4940
4941 nv_free_irq(dev);
4942
4943 np->msi_flags = save_msi_flags;
4944
4945 if (netif_running(dev)) {
4946 writel(save_poll_interval, base + NvRegPollingInterval);
4947 writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
4948 /* restore original irq */
4949 if (nv_request_irq(dev, 0))
4950 return 0;
4951 }
4952
4953 return ret;
4954}
4955
4956static int nv_loopback_test(struct net_device *dev)
4957{
4958 struct fe_priv *np = netdev_priv(dev);
4959 u8 __iomem *base = get_hwbase(dev);
4960 struct sk_buff *tx_skb, *rx_skb;
4961 dma_addr_t test_dma_addr;
4962 u32 tx_flags_extra = (np->desc_ver == DESC_VER_1 ? NV_TX_LASTPACKET : NV_TX2_LASTPACKET);
4963 u32 flags;
4964 int len, i, pkt_len;
4965 u8 *pkt_data;
4966 u32 filter_flags = 0;
4967 u32 misc1_flags = 0;
4968 int ret = 1;
4969
4970 if (netif_running(dev)) {
4971 nv_disable_irq(dev);
4972 filter_flags = readl(base + NvRegPacketFilterFlags);
4973 misc1_flags = readl(base + NvRegMisc1);
4974 } else {
4975 nv_txrx_reset(dev);
4976 }
4977
4978 /* reinit driver view of the rx queue */
4979 set_bufsize(dev);
4980 nv_init_ring(dev);
4981
4982 /* setup hardware for loopback */
4983 writel(NVREG_MISC1_FORCE, base + NvRegMisc1);
4984 writel(NVREG_PFF_ALWAYS | NVREG_PFF_LOOPBACK, base + NvRegPacketFilterFlags);
4985
4986 /* reinit nic view of the rx queue */
4987 writel(np->rx_buf_sz, base + NvRegOffloadConfig);
4988 setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
4989 writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
4990 base + NvRegRingSizes);
4991 pci_push(base);
4992
4993 /* restart rx engine */
4994 nv_start_rxtx(dev);
4995
4996 /* setup packet for tx */
4997 pkt_len = ETH_DATA_LEN;
4998 tx_skb = netdev_alloc_skb(dev, pkt_len);
4999 if (!tx_skb) {
5000 netdev_err(dev, "netdev_alloc_skb() failed during loopback test\n");
5001 ret = 0;
5002 goto out;
5003 }
5004 test_dma_addr = pci_map_single(np->pci_dev, tx_skb->data,
5005 skb_tailroom(tx_skb),
5006 PCI_DMA_FROMDEVICE);
5007 pkt_data = skb_put(tx_skb, pkt_len);
5008 for (i = 0; i < pkt_len; i++)
5009 pkt_data[i] = (u8)(i & 0xff);
5010
5011 if (!nv_optimized(np)) {
5012 np->tx_ring.orig[0].buf = cpu_to_le32(test_dma_addr);
5013 np->tx_ring.orig[0].flaglen = cpu_to_le32((pkt_len-1) | np->tx_flags | tx_flags_extra);
5014 } else {
5015 np->tx_ring.ex[0].bufhigh = cpu_to_le32(dma_high(test_dma_addr));
5016 np->tx_ring.ex[0].buflow = cpu_to_le32(dma_low(test_dma_addr));
5017 np->tx_ring.ex[0].flaglen = cpu_to_le32((pkt_len-1) | np->tx_flags | tx_flags_extra);
5018 }
5019 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
5020 pci_push(get_hwbase(dev));
5021
5022 msleep(500);
5023
5024 /* check for rx of the packet */
5025 if (!nv_optimized(np)) {
5026 flags = le32_to_cpu(np->rx_ring.orig[0].flaglen);
5027 len = nv_descr_getlength(&np->rx_ring.orig[0], np->desc_ver);
5028
5029 } else {
5030 flags = le32_to_cpu(np->rx_ring.ex[0].flaglen);
5031 len = nv_descr_getlength_ex(&np->rx_ring.ex[0], np->desc_ver);
5032 }
5033
5034 if (flags & NV_RX_AVAIL) {
5035 ret = 0;
5036 } else if (np->desc_ver == DESC_VER_1) {
5037 if (flags & NV_RX_ERROR)
5038 ret = 0;
5039 } else {
5040 if (flags & NV_RX2_ERROR)
5041 ret = 0;
5042 }
5043
5044 if (ret) {
5045 if (len != pkt_len) {
5046 ret = 0;
5047 } else {
5048 rx_skb = np->rx_skb[0].skb;
5049 for (i = 0; i < pkt_len; i++) {
5050 if (rx_skb->data[i] != (u8)(i & 0xff)) {
5051 ret = 0;
5052 break;
5053 }
5054 }
5055 }
5056 }
5057
5058 pci_unmap_single(np->pci_dev, test_dma_addr,
5059 (skb_end_pointer(tx_skb) - tx_skb->data),
5060 PCI_DMA_TODEVICE);
5061 dev_kfree_skb_any(tx_skb);
5062 out:
5063 /* stop engines */
5064 nv_stop_rxtx(dev);
5065 nv_txrx_reset(dev);
5066 /* drain rx queue */
5067 nv_drain_rxtx(dev);
5068
5069 if (netif_running(dev)) {
5070 writel(misc1_flags, base + NvRegMisc1);
5071 writel(filter_flags, base + NvRegPacketFilterFlags);
5072 nv_enable_irq(dev);
5073 }
5074
5075 return ret;
5076}
5077
5078static void nv_self_test(struct net_device *dev, struct ethtool_test *test, u64 *buffer)
5079{
5080 struct fe_priv *np = netdev_priv(dev);
5081 u8 __iomem *base = get_hwbase(dev);
5082 int result;
5083 memset(buffer, 0, nv_get_sset_count(dev, ETH_SS_TEST)*sizeof(u64));
5084
5085 if (!nv_link_test(dev)) {
5086 test->flags |= ETH_TEST_FL_FAILED;
5087 buffer[0] = 1;
5088 }
5089
5090 if (test->flags & ETH_TEST_FL_OFFLINE) {
5091 if (netif_running(dev)) {
5092 netif_stop_queue(dev);
5093 nv_napi_disable(dev);
5094 netif_tx_lock_bh(dev);
5095 netif_addr_lock(dev);
5096 spin_lock_irq(&np->lock);
5097 nv_disable_hw_interrupts(dev, np->irqmask);
5098 if (!(np->msi_flags & NV_MSI_X_ENABLED))
5099 writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
5100 else
5101 writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
5102 /* stop engines */
5103 nv_stop_rxtx(dev);
5104 nv_txrx_reset(dev);
5105 /* drain rx queue */
5106 nv_drain_rxtx(dev);
5107 spin_unlock_irq(&np->lock);
5108 netif_addr_unlock(dev);
5109 netif_tx_unlock_bh(dev);
5110 }
5111
5112 if (!nv_register_test(dev)) {
5113 test->flags |= ETH_TEST_FL_FAILED;
5114 buffer[1] = 1;
5115 }
5116
5117 result = nv_interrupt_test(dev);
5118 if (result != 1) {
5119 test->flags |= ETH_TEST_FL_FAILED;
5120 buffer[2] = 1;
5121 }
5122 if (result == 0) {
5123 /* bail out */
5124 return;
5125 }
5126
5127 if (!nv_loopback_test(dev)) {
5128 test->flags |= ETH_TEST_FL_FAILED;
5129 buffer[3] = 1;
5130 }
5131
5132 if (netif_running(dev)) {
5133 /* reinit driver view of the rx queue */
5134 set_bufsize(dev);
5135 if (nv_init_ring(dev)) {
5136 if (!np->in_shutdown)
5137 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
5138 }
5139 /* reinit nic view of the rx queue */
5140 writel(np->rx_buf_sz, base + NvRegOffloadConfig);
5141 setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
5142 writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
5143 base + NvRegRingSizes);
5144 pci_push(base);
5145 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
5146 pci_push(base);
5147 /* restart rx engine */
5148 nv_start_rxtx(dev);
5149 netif_start_queue(dev);
5150 nv_napi_enable(dev);
5151 nv_enable_hw_interrupts(dev, np->irqmask);
5152 }
5153 }
5154}
5155
5156static void nv_get_strings(struct net_device *dev, u32 stringset, u8 *buffer)
5157{
5158 switch (stringset) {
5159 case ETH_SS_STATS:
5160 memcpy(buffer, &nv_estats_str, nv_get_sset_count(dev, ETH_SS_STATS)*sizeof(struct nv_ethtool_str));
5161 break;
5162 case ETH_SS_TEST:
5163 memcpy(buffer, &nv_etests_str, nv_get_sset_count(dev, ETH_SS_TEST)*sizeof(struct nv_ethtool_str));
5164 break;
5165 }
5166}
5167
5168static const struct ethtool_ops ops = {
5169 .get_drvinfo = nv_get_drvinfo,
5170 .get_link = ethtool_op_get_link,
5171 .get_wol = nv_get_wol,
5172 .set_wol = nv_set_wol,
5173 .get_settings = nv_get_settings,
5174 .set_settings = nv_set_settings,
5175 .get_regs_len = nv_get_regs_len,
5176 .get_regs = nv_get_regs,
5177 .nway_reset = nv_nway_reset,
5178 .get_ringparam = nv_get_ringparam,
5179 .set_ringparam = nv_set_ringparam,
5180 .get_pauseparam = nv_get_pauseparam,
5181 .set_pauseparam = nv_set_pauseparam,
5182 .get_strings = nv_get_strings,
5183 .get_ethtool_stats = nv_get_ethtool_stats,
5184 .get_sset_count = nv_get_sset_count,
5185 .self_test = nv_self_test,
5186};
5187
5188/* The mgmt unit and driver use a semaphore to access the phy during init */
5189static int nv_mgmt_acquire_sema(struct net_device *dev)
5190{
5191 struct fe_priv *np = netdev_priv(dev);
5192 u8 __iomem *base = get_hwbase(dev);
5193 int i;
5194 u32 tx_ctrl, mgmt_sema;
5195
5196 for (i = 0; i < 10; i++) {
5197 mgmt_sema = readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_MGMT_SEMA_MASK;
5198 if (mgmt_sema == NVREG_XMITCTL_MGMT_SEMA_FREE)
5199 break;
5200 msleep(500);
5201 }
5202
5203 if (mgmt_sema != NVREG_XMITCTL_MGMT_SEMA_FREE)
5204 return 0;
5205
5206 for (i = 0; i < 2; i++) {
5207 tx_ctrl = readl(base + NvRegTransmitterControl);
5208 tx_ctrl |= NVREG_XMITCTL_HOST_SEMA_ACQ;
5209 writel(tx_ctrl, base + NvRegTransmitterControl);
5210
5211 /* verify that semaphore was acquired */
5212 tx_ctrl = readl(base + NvRegTransmitterControl);
5213 if (((tx_ctrl & NVREG_XMITCTL_HOST_SEMA_MASK) == NVREG_XMITCTL_HOST_SEMA_ACQ) &&
5214 ((tx_ctrl & NVREG_XMITCTL_MGMT_SEMA_MASK) == NVREG_XMITCTL_MGMT_SEMA_FREE)) {
5215 np->mgmt_sema = 1;
5216 return 1;
5217 } else
5218 udelay(50);
5219 }
5220
5221 return 0;
5222}
5223
5224static void nv_mgmt_release_sema(struct net_device *dev)
5225{
5226 struct fe_priv *np = netdev_priv(dev);
5227 u8 __iomem *base = get_hwbase(dev);
5228 u32 tx_ctrl;
5229
5230 if (np->driver_data & DEV_HAS_MGMT_UNIT) {
5231 if (np->mgmt_sema) {
5232 tx_ctrl = readl(base + NvRegTransmitterControl);
5233 tx_ctrl &= ~NVREG_XMITCTL_HOST_SEMA_ACQ;
5234 writel(tx_ctrl, base + NvRegTransmitterControl);
5235 }
5236 }
5237}
5238
5239
5240static int nv_mgmt_get_version(struct net_device *dev)
5241{
5242 struct fe_priv *np = netdev_priv(dev);
5243 u8 __iomem *base = get_hwbase(dev);
5244 u32 data_ready = readl(base + NvRegTransmitterControl);
5245 u32 data_ready2 = 0;
5246 unsigned long start;
5247 int ready = 0;
5248
5249 writel(NVREG_MGMTUNITGETVERSION, base + NvRegMgmtUnitGetVersion);
5250 writel(data_ready ^ NVREG_XMITCTL_DATA_START, base + NvRegTransmitterControl);
5251 start = jiffies;
5252 while (time_before(jiffies, start + 5*HZ)) {
5253 data_ready2 = readl(base + NvRegTransmitterControl);
5254 if ((data_ready & NVREG_XMITCTL_DATA_READY) != (data_ready2 & NVREG_XMITCTL_DATA_READY)) {
5255 ready = 1;
5256 break;
5257 }
5258 schedule_timeout_uninterruptible(1);
5259 }
5260
5261 if (!ready || (data_ready2 & NVREG_XMITCTL_DATA_ERROR))
5262 return 0;
5263
5264 np->mgmt_version = readl(base + NvRegMgmtUnitVersion) & NVREG_MGMTUNITVERSION;
5265
5266 return 1;
5267}
5268
5269static int nv_open(struct net_device *dev)
5270{
5271 struct fe_priv *np = netdev_priv(dev);
5272 u8 __iomem *base = get_hwbase(dev);
5273 int ret = 1;
5274 int oom, i;
5275 u32 low;
5276
5277 /* power up phy */
5278 mii_rw(dev, np->phyaddr, MII_BMCR,
5279 mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ) & ~BMCR_PDOWN);
5280
5281 nv_txrx_gate(dev, false);
5282 /* erase previous misconfiguration */
5283 if (np->driver_data & DEV_HAS_POWER_CNTRL)
5284 nv_mac_reset(dev);
5285 writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA);
5286 writel(0, base + NvRegMulticastAddrB);
5287 writel(NVREG_MCASTMASKA_NONE, base + NvRegMulticastMaskA);
5288 writel(NVREG_MCASTMASKB_NONE, base + NvRegMulticastMaskB);
5289 writel(0, base + NvRegPacketFilterFlags);
5290
5291 writel(0, base + NvRegTransmitterControl);
5292 writel(0, base + NvRegReceiverControl);
5293
5294 writel(0, base + NvRegAdapterControl);
5295
5296 if (np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE)
5297 writel(NVREG_TX_PAUSEFRAME_DISABLE, base + NvRegTxPauseFrame);
5298
5299 /* initialize descriptor rings */
5300 set_bufsize(dev);
5301 oom = nv_init_ring(dev);
5302
5303 writel(0, base + NvRegLinkSpeed);
5304 writel(readl(base + NvRegTransmitPoll) & NVREG_TRANSMITPOLL_MAC_ADDR_REV, base + NvRegTransmitPoll);
5305 nv_txrx_reset(dev);
5306 writel(0, base + NvRegUnknownSetupReg6);
5307
5308 np->in_shutdown = 0;
5309
5310 /* give hw rings */
5311 setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
5312 writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
5313 base + NvRegRingSizes);
5314
5315 writel(np->linkspeed, base + NvRegLinkSpeed);
5316 if (np->desc_ver == DESC_VER_1)
5317 writel(NVREG_TX_WM_DESC1_DEFAULT, base + NvRegTxWatermark);
5318 else
5319 writel(NVREG_TX_WM_DESC2_3_DEFAULT, base + NvRegTxWatermark);
5320 writel(np->txrxctl_bits, base + NvRegTxRxControl);
5321 writel(np->vlanctl_bits, base + NvRegVlanControl);
5322 pci_push(base);
5323 writel(NVREG_TXRXCTL_BIT1|np->txrxctl_bits, base + NvRegTxRxControl);
5324 if (reg_delay(dev, NvRegUnknownSetupReg5,
5325 NVREG_UNKSETUP5_BIT31, NVREG_UNKSETUP5_BIT31,
5326 NV_SETUP5_DELAY, NV_SETUP5_DELAYMAX))
5327 netdev_info(dev,
5328 "%s: SetupReg5, Bit 31 remained off\n", __func__);
5329
5330 writel(0, base + NvRegMIIMask);
5331 writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
5332 writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5333
5334 writel(NVREG_MISC1_FORCE | NVREG_MISC1_HD, base + NvRegMisc1);
5335 writel(readl(base + NvRegTransmitterStatus), base + NvRegTransmitterStatus);
5336 writel(NVREG_PFF_ALWAYS, base + NvRegPacketFilterFlags);
5337 writel(np->rx_buf_sz, base + NvRegOffloadConfig);
5338
5339 writel(readl(base + NvRegReceiverStatus), base + NvRegReceiverStatus);
5340
5341 get_random_bytes(&low, sizeof(low));
5342 low &= NVREG_SLOTTIME_MASK;
5343 if (np->desc_ver == DESC_VER_1) {
5344 writel(low|NVREG_SLOTTIME_DEFAULT, base + NvRegSlotTime);
5345 } else {
5346 if (!(np->driver_data & DEV_HAS_GEAR_MODE)) {
5347 /* setup legacy backoff */
5348 writel(NVREG_SLOTTIME_LEGBF_ENABLED|NVREG_SLOTTIME_10_100_FULL|low, base + NvRegSlotTime);
5349 } else {
5350 writel(NVREG_SLOTTIME_10_100_FULL, base + NvRegSlotTime);
5351 nv_gear_backoff_reseed(dev);
5352 }
5353 }
5354 writel(NVREG_TX_DEFERRAL_DEFAULT, base + NvRegTxDeferral);
5355 writel(NVREG_RX_DEFERRAL_DEFAULT, base + NvRegRxDeferral);
5356 if (poll_interval == -1) {
5357 if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT)
5358 writel(NVREG_POLL_DEFAULT_THROUGHPUT, base + NvRegPollingInterval);
5359 else
5360 writel(NVREG_POLL_DEFAULT_CPU, base + NvRegPollingInterval);
5361 } else
5362 writel(poll_interval & 0xFFFF, base + NvRegPollingInterval);
5363 writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
5364 writel((np->phyaddr << NVREG_ADAPTCTL_PHYSHIFT)|NVREG_ADAPTCTL_PHYVALID|NVREG_ADAPTCTL_RUNNING,
5365 base + NvRegAdapterControl);
5366 writel(NVREG_MIISPEED_BIT8|NVREG_MIIDELAY, base + NvRegMIISpeed);
5367 writel(NVREG_MII_LINKCHANGE, base + NvRegMIIMask);
5368 if (np->wolenabled)
5369 writel(NVREG_WAKEUPFLAGS_ENABLE , base + NvRegWakeUpFlags);
5370
5371 i = readl(base + NvRegPowerState);
5372 if ((i & NVREG_POWERSTATE_POWEREDUP) == 0)
5373 writel(NVREG_POWERSTATE_POWEREDUP|i, base + NvRegPowerState);
5374
5375 pci_push(base);
5376 udelay(10);
5377 writel(readl(base + NvRegPowerState) | NVREG_POWERSTATE_VALID, base + NvRegPowerState);
5378
5379 nv_disable_hw_interrupts(dev, np->irqmask);
5380 pci_push(base);
5381 writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5382 writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
5383 pci_push(base);
5384
5385 if (nv_request_irq(dev, 0))
5386 goto out_drain;
5387
5388 /* ask for interrupts */
5389 nv_enable_hw_interrupts(dev, np->irqmask);
5390
5391 spin_lock_irq(&np->lock);
5392 writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA);
5393 writel(0, base + NvRegMulticastAddrB);
5394 writel(NVREG_MCASTMASKA_NONE, base + NvRegMulticastMaskA);
5395 writel(NVREG_MCASTMASKB_NONE, base + NvRegMulticastMaskB);
5396 writel(NVREG_PFF_ALWAYS|NVREG_PFF_MYADDR, base + NvRegPacketFilterFlags);
5397 /* One manual link speed update: Interrupts are enabled, future link
5398 * speed changes cause interrupts and are handled by nv_link_irq().
5399 */
5400 {
5401 u32 miistat;
5402 miistat = readl(base + NvRegMIIStatus);
5403 writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5404 }
5405 /* set linkspeed to invalid value, thus force nv_update_linkspeed
5406 * to init hw */
5407 np->linkspeed = 0;
5408 ret = nv_update_linkspeed(dev);
5409 nv_start_rxtx(dev);
5410 netif_start_queue(dev);
5411 nv_napi_enable(dev);
5412
5413 if (ret) {
5414 netif_carrier_on(dev);
5415 } else {
5416 netdev_info(dev, "no link during initialization\n");
5417 netif_carrier_off(dev);
5418 }
5419 if (oom)
5420 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
5421
5422 /* start statistics timer */
5423 if (np->driver_data & (DEV_HAS_STATISTICS_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_STATISTICS_V3))
5424 mod_timer(&np->stats_poll,
5425 round_jiffies(jiffies + STATS_INTERVAL));
5426
5427 spin_unlock_irq(&np->lock);
5428
5429 /* If the loopback feature was set while the device was down, make sure
5430 * that it's set correctly now.
5431 */
5432 if (dev->features & NETIF_F_LOOPBACK)
5433 nv_set_loopback(dev, dev->features);
5434
5435 return 0;
5436out_drain:
5437 nv_drain_rxtx(dev);
5438 return ret;
5439}
5440
5441static int nv_close(struct net_device *dev)
5442{
5443 struct fe_priv *np = netdev_priv(dev);
5444 u8 __iomem *base;
5445
5446 spin_lock_irq(&np->lock);
5447 np->in_shutdown = 1;
5448 spin_unlock_irq(&np->lock);
5449 nv_napi_disable(dev);
5450 synchronize_irq(np->pci_dev->irq);
5451
5452 del_timer_sync(&np->oom_kick);
5453 del_timer_sync(&np->nic_poll);
5454 del_timer_sync(&np->stats_poll);
5455
5456 netif_stop_queue(dev);
5457 spin_lock_irq(&np->lock);
5458 nv_stop_rxtx(dev);
5459 nv_txrx_reset(dev);
5460
5461 /* disable interrupts on the nic or we will lock up */
5462 base = get_hwbase(dev);
5463 nv_disable_hw_interrupts(dev, np->irqmask);
5464 pci_push(base);
5465
5466 spin_unlock_irq(&np->lock);
5467
5468 nv_free_irq(dev);
5469
5470 nv_drain_rxtx(dev);
5471
5472 if (np->wolenabled || !phy_power_down) {
5473 nv_txrx_gate(dev, false);
5474 writel(NVREG_PFF_ALWAYS|NVREG_PFF_MYADDR, base + NvRegPacketFilterFlags);
5475 nv_start_rx(dev);
5476 } else {
5477 /* power down phy */
5478 mii_rw(dev, np->phyaddr, MII_BMCR,
5479 mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ)|BMCR_PDOWN);
5480 nv_txrx_gate(dev, true);
5481 }
5482
5483 /* FIXME: power down nic */
5484
5485 return 0;
5486}
5487
5488static const struct net_device_ops nv_netdev_ops = {
5489 .ndo_open = nv_open,
5490 .ndo_stop = nv_close,
5491 .ndo_get_stats64 = nv_get_stats64,
5492 .ndo_start_xmit = nv_start_xmit,
5493 .ndo_tx_timeout = nv_tx_timeout,
5494 .ndo_change_mtu = nv_change_mtu,
5495 .ndo_fix_features = nv_fix_features,
5496 .ndo_set_features = nv_set_features,
5497 .ndo_validate_addr = eth_validate_addr,
5498 .ndo_set_mac_address = nv_set_mac_address,
5499 .ndo_set_rx_mode = nv_set_multicast,
5500#ifdef CONFIG_NET_POLL_CONTROLLER
5501 .ndo_poll_controller = nv_poll_controller,
5502#endif
5503};
5504
5505static const struct net_device_ops nv_netdev_ops_optimized = {
5506 .ndo_open = nv_open,
5507 .ndo_stop = nv_close,
5508 .ndo_get_stats64 = nv_get_stats64,
5509 .ndo_start_xmit = nv_start_xmit_optimized,
5510 .ndo_tx_timeout = nv_tx_timeout,
5511 .ndo_change_mtu = nv_change_mtu,
5512 .ndo_fix_features = nv_fix_features,
5513 .ndo_set_features = nv_set_features,
5514 .ndo_validate_addr = eth_validate_addr,
5515 .ndo_set_mac_address = nv_set_mac_address,
5516 .ndo_set_rx_mode = nv_set_multicast,
5517#ifdef CONFIG_NET_POLL_CONTROLLER
5518 .ndo_poll_controller = nv_poll_controller,
5519#endif
5520};
5521
5522static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_id *id)
5523{
5524 struct net_device *dev;
5525 struct fe_priv *np;
5526 unsigned long addr;
5527 u8 __iomem *base;
5528 int err, i;
5529 u32 powerstate, txreg;
5530 u32 phystate_orig = 0, phystate;
5531 int phyinitialized = 0;
5532 static int printed_version;
5533
5534 if (!printed_version++)
5535 pr_info("Reverse Engineered nForce ethernet driver. Version %s.\n",
5536 FORCEDETH_VERSION);
5537
5538 dev = alloc_etherdev(sizeof(struct fe_priv));
5539 err = -ENOMEM;
5540 if (!dev)
5541 goto out;
5542
5543 np = netdev_priv(dev);
5544 np->dev = dev;
5545 np->pci_dev = pci_dev;
5546 spin_lock_init(&np->lock);
5547 spin_lock_init(&np->hwstats_lock);
5548 SET_NETDEV_DEV(dev, &pci_dev->dev);
5549
5550 init_timer(&np->oom_kick);
5551 np->oom_kick.data = (unsigned long) dev;
5552 np->oom_kick.function = nv_do_rx_refill; /* timer handler */
5553 init_timer(&np->nic_poll);
5554 np->nic_poll.data = (unsigned long) dev;
5555 np->nic_poll.function = nv_do_nic_poll; /* timer handler */
5556 init_timer_deferrable(&np->stats_poll);
5557 np->stats_poll.data = (unsigned long) dev;
5558 np->stats_poll.function = nv_do_stats_poll; /* timer handler */
5559
5560 err = pci_enable_device(pci_dev);
5561 if (err)
5562 goto out_free;
5563
5564 pci_set_master(pci_dev);
5565
5566 err = pci_request_regions(pci_dev, DRV_NAME);
5567 if (err < 0)
5568 goto out_disable;
5569
5570 if (id->driver_data & (DEV_HAS_VLAN|DEV_HAS_MSI_X|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V2|DEV_HAS_STATISTICS_V3))
5571 np->register_size = NV_PCI_REGSZ_VER3;
5572 else if (id->driver_data & DEV_HAS_STATISTICS_V1)
5573 np->register_size = NV_PCI_REGSZ_VER2;
5574 else
5575 np->register_size = NV_PCI_REGSZ_VER1;
5576
5577 err = -EINVAL;
5578 addr = 0;
5579 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
5580 if (pci_resource_flags(pci_dev, i) & IORESOURCE_MEM &&
5581 pci_resource_len(pci_dev, i) >= np->register_size) {
5582 addr = pci_resource_start(pci_dev, i);
5583 break;
5584 }
5585 }
5586 if (i == DEVICE_COUNT_RESOURCE) {
5587 dev_info(&pci_dev->dev, "Couldn't find register window\n");
5588 goto out_relreg;
5589 }
5590
5591 /* copy of driver data */
5592 np->driver_data = id->driver_data;
5593 /* copy of device id */
5594 np->device_id = id->device;
5595
5596 /* handle different descriptor versions */
5597 if (id->driver_data & DEV_HAS_HIGH_DMA) {
5598 /* packet format 3: supports 40-bit addressing */
5599 np->desc_ver = DESC_VER_3;
5600 np->txrxctl_bits = NVREG_TXRXCTL_DESC_3;
5601 if (dma_64bit) {
5602 if (pci_set_dma_mask(pci_dev, DMA_BIT_MASK(39)))
5603 dev_info(&pci_dev->dev,
5604 "64-bit DMA failed, using 32-bit addressing\n");
5605 else
5606 dev->features |= NETIF_F_HIGHDMA;
5607 if (pci_set_consistent_dma_mask(pci_dev, DMA_BIT_MASK(39))) {
5608 dev_info(&pci_dev->dev,
5609 "64-bit DMA (consistent) failed, using 32-bit ring buffers\n");
5610 }
5611 }
5612 } else if (id->driver_data & DEV_HAS_LARGEDESC) {
5613 /* packet format 2: supports jumbo frames */
5614 np->desc_ver = DESC_VER_2;
5615 np->txrxctl_bits = NVREG_TXRXCTL_DESC_2;
5616 } else {
5617 /* original packet format */
5618 np->desc_ver = DESC_VER_1;
5619 np->txrxctl_bits = NVREG_TXRXCTL_DESC_1;
5620 }
5621
5622 np->pkt_limit = NV_PKTLIMIT_1;
5623 if (id->driver_data & DEV_HAS_LARGEDESC)
5624 np->pkt_limit = NV_PKTLIMIT_2;
5625
5626 if (id->driver_data & DEV_HAS_CHECKSUM) {
5627 np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
5628 dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_SG |
5629 NETIF_F_TSO | NETIF_F_RXCSUM;
5630 }
5631
5632 np->vlanctl_bits = 0;
5633 if (id->driver_data & DEV_HAS_VLAN) {
5634 np->vlanctl_bits = NVREG_VLANCONTROL_ENABLE;
5635 dev->hw_features |= NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX;
5636 }
5637
5638 dev->features |= dev->hw_features;
5639
5640 /* Add loopback capability to the device. */
5641 dev->hw_features |= NETIF_F_LOOPBACK;
5642
5643 np->pause_flags = NV_PAUSEFRAME_RX_CAPABLE | NV_PAUSEFRAME_RX_REQ | NV_PAUSEFRAME_AUTONEG;
5644 if ((id->driver_data & DEV_HAS_PAUSEFRAME_TX_V1) ||
5645 (id->driver_data & DEV_HAS_PAUSEFRAME_TX_V2) ||
5646 (id->driver_data & DEV_HAS_PAUSEFRAME_TX_V3)) {
5647 np->pause_flags |= NV_PAUSEFRAME_TX_CAPABLE | NV_PAUSEFRAME_TX_REQ;
5648 }
5649
5650 err = -ENOMEM;
5651 np->base = ioremap(addr, np->register_size);
5652 if (!np->base)
5653 goto out_relreg;
5654
5655 np->rx_ring_size = RX_RING_DEFAULT;
5656 np->tx_ring_size = TX_RING_DEFAULT;
5657
5658 if (!nv_optimized(np)) {
5659 np->rx_ring.orig = pci_alloc_consistent(pci_dev,
5660 sizeof(struct ring_desc) * (np->rx_ring_size + np->tx_ring_size),
5661 &np->ring_addr);
5662 if (!np->rx_ring.orig)
5663 goto out_unmap;
5664 np->tx_ring.orig = &np->rx_ring.orig[np->rx_ring_size];
5665 } else {
5666 np->rx_ring.ex = pci_alloc_consistent(pci_dev,
5667 sizeof(struct ring_desc_ex) * (np->rx_ring_size + np->tx_ring_size),
5668 &np->ring_addr);
5669 if (!np->rx_ring.ex)
5670 goto out_unmap;
5671 np->tx_ring.ex = &np->rx_ring.ex[np->rx_ring_size];
5672 }
5673 np->rx_skb = kcalloc(np->rx_ring_size, sizeof(struct nv_skb_map), GFP_KERNEL);
5674 np->tx_skb = kcalloc(np->tx_ring_size, sizeof(struct nv_skb_map), GFP_KERNEL);
5675 if (!np->rx_skb || !np->tx_skb)
5676 goto out_freering;
5677
5678 if (!nv_optimized(np))
5679 dev->netdev_ops = &nv_netdev_ops;
5680 else
5681 dev->netdev_ops = &nv_netdev_ops_optimized;
5682
5683 netif_napi_add(dev, &np->napi, nv_napi_poll, RX_WORK_PER_LOOP);
5684 SET_ETHTOOL_OPS(dev, &ops);
5685 dev->watchdog_timeo = NV_WATCHDOG_TIMEO;
5686
5687 pci_set_drvdata(pci_dev, dev);
5688
5689 /* read the mac address */
5690 base = get_hwbase(dev);
5691 np->orig_mac[0] = readl(base + NvRegMacAddrA);
5692 np->orig_mac[1] = readl(base + NvRegMacAddrB);
5693
5694 /* check the workaround bit for correct mac address order */
5695 txreg = readl(base + NvRegTransmitPoll);
5696 if (id->driver_data & DEV_HAS_CORRECT_MACADDR) {
5697 /* mac address is already in correct order */
5698 dev->dev_addr[0] = (np->orig_mac[0] >> 0) & 0xff;
5699 dev->dev_addr[1] = (np->orig_mac[0] >> 8) & 0xff;
5700 dev->dev_addr[2] = (np->orig_mac[0] >> 16) & 0xff;
5701 dev->dev_addr[3] = (np->orig_mac[0] >> 24) & 0xff;
5702 dev->dev_addr[4] = (np->orig_mac[1] >> 0) & 0xff;
5703 dev->dev_addr[5] = (np->orig_mac[1] >> 8) & 0xff;
5704 } else if (txreg & NVREG_TRANSMITPOLL_MAC_ADDR_REV) {
5705 /* mac address is already in correct order */
5706 dev->dev_addr[0] = (np->orig_mac[0] >> 0) & 0xff;
5707 dev->dev_addr[1] = (np->orig_mac[0] >> 8) & 0xff;
5708 dev->dev_addr[2] = (np->orig_mac[0] >> 16) & 0xff;
5709 dev->dev_addr[3] = (np->orig_mac[0] >> 24) & 0xff;
5710 dev->dev_addr[4] = (np->orig_mac[1] >> 0) & 0xff;
5711 dev->dev_addr[5] = (np->orig_mac[1] >> 8) & 0xff;
5712 /*
5713 * Set orig mac address back to the reversed version.
5714 * This flag will be cleared during low power transition.
5715 * Therefore, we should always put back the reversed address.
5716 */
5717 np->orig_mac[0] = (dev->dev_addr[5] << 0) + (dev->dev_addr[4] << 8) +
5718 (dev->dev_addr[3] << 16) + (dev->dev_addr[2] << 24);
5719 np->orig_mac[1] = (dev->dev_addr[1] << 0) + (dev->dev_addr[0] << 8);
5720 } else {
5721 /* need to reverse mac address to correct order */
5722 dev->dev_addr[0] = (np->orig_mac[1] >> 8) & 0xff;
5723 dev->dev_addr[1] = (np->orig_mac[1] >> 0) & 0xff;
5724 dev->dev_addr[2] = (np->orig_mac[0] >> 24) & 0xff;
5725 dev->dev_addr[3] = (np->orig_mac[0] >> 16) & 0xff;
5726 dev->dev_addr[4] = (np->orig_mac[0] >> 8) & 0xff;
5727 dev->dev_addr[5] = (np->orig_mac[0] >> 0) & 0xff;
5728 writel(txreg|NVREG_TRANSMITPOLL_MAC_ADDR_REV, base + NvRegTransmitPoll);
5729 dev_dbg(&pci_dev->dev,
5730 "%s: set workaround bit for reversed mac addr\n",
5731 __func__);
5732 }
5733 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
5734
5735 if (!is_valid_ether_addr(dev->perm_addr)) {
5736 /*
5737 * Bad mac address. At least one bios sets the mac address
5738 * to 01:23:45:67:89:ab
5739 */
5740 dev_err(&pci_dev->dev,
5741 "Invalid MAC address detected: %pM - Please complain to your hardware vendor.\n",
5742 dev->dev_addr);
5743 eth_hw_addr_random(dev);
5744 dev_err(&pci_dev->dev,
5745 "Using random MAC address: %pM\n", dev->dev_addr);
5746 }
5747
5748 /* set mac address */
5749 nv_copy_mac_to_hw(dev);
5750
5751 /* disable WOL */
5752 writel(0, base + NvRegWakeUpFlags);
5753 np->wolenabled = 0;
5754 device_set_wakeup_enable(&pci_dev->dev, false);
5755
5756 if (id->driver_data & DEV_HAS_POWER_CNTRL) {
5757
5758 /* take phy and nic out of low power mode */
5759 powerstate = readl(base + NvRegPowerState2);
5760 powerstate &= ~NVREG_POWERSTATE2_POWERUP_MASK;
5761 if ((id->driver_data & DEV_NEED_LOW_POWER_FIX) &&
5762 pci_dev->revision >= 0xA3)
5763 powerstate |= NVREG_POWERSTATE2_POWERUP_REV_A3;
5764 writel(powerstate, base + NvRegPowerState2);
5765 }
5766
5767 if (np->desc_ver == DESC_VER_1)
5768 np->tx_flags = NV_TX_VALID;
5769 else
5770 np->tx_flags = NV_TX2_VALID;
5771
5772 np->msi_flags = 0;
5773 if ((id->driver_data & DEV_HAS_MSI) && msi)
5774 np->msi_flags |= NV_MSI_CAPABLE;
5775
5776 if ((id->driver_data & DEV_HAS_MSI_X) && msix) {
5777 /* msix has had reported issues when modifying irqmask
5778 as in the case of napi, therefore, disable for now
5779 */
5780#if 0
5781 np->msi_flags |= NV_MSI_X_CAPABLE;
5782#endif
5783 }
5784
5785 if (optimization_mode == NV_OPTIMIZATION_MODE_CPU) {
5786 np->irqmask = NVREG_IRQMASK_CPU;
5787 if (np->msi_flags & NV_MSI_X_CAPABLE) /* set number of vectors */
5788 np->msi_flags |= 0x0001;
5789 } else if (optimization_mode == NV_OPTIMIZATION_MODE_DYNAMIC &&
5790 !(id->driver_data & DEV_NEED_TIMERIRQ)) {
5791 /* start off in throughput mode */
5792 np->irqmask = NVREG_IRQMASK_THROUGHPUT;
5793 /* remove support for msix mode */
5794 np->msi_flags &= ~NV_MSI_X_CAPABLE;
5795 } else {
5796 optimization_mode = NV_OPTIMIZATION_MODE_THROUGHPUT;
5797 np->irqmask = NVREG_IRQMASK_THROUGHPUT;
5798 if (np->msi_flags & NV_MSI_X_CAPABLE) /* set number of vectors */
5799 np->msi_flags |= 0x0003;
5800 }
5801
5802 if (id->driver_data & DEV_NEED_TIMERIRQ)
5803 np->irqmask |= NVREG_IRQ_TIMER;
5804 if (id->driver_data & DEV_NEED_LINKTIMER) {
5805 np->need_linktimer = 1;
5806 np->link_timeout = jiffies + LINK_TIMEOUT;
5807 } else {
5808 np->need_linktimer = 0;
5809 }
5810
5811 /* Limit the number of tx's outstanding for hw bug */
5812 if (id->driver_data & DEV_NEED_TX_LIMIT) {
5813 np->tx_limit = 1;
5814 if (((id->driver_data & DEV_NEED_TX_LIMIT2) == DEV_NEED_TX_LIMIT2) &&
5815 pci_dev->revision >= 0xA2)
5816 np->tx_limit = 0;
5817 }
5818
5819 /* clear phy state and temporarily halt phy interrupts */
5820 writel(0, base + NvRegMIIMask);
5821 phystate = readl(base + NvRegAdapterControl);
5822 if (phystate & NVREG_ADAPTCTL_RUNNING) {
5823 phystate_orig = 1;
5824 phystate &= ~NVREG_ADAPTCTL_RUNNING;
5825 writel(phystate, base + NvRegAdapterControl);
5826 }
5827 writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5828
5829 if (id->driver_data & DEV_HAS_MGMT_UNIT) {
5830 /* management unit running on the mac? */
5831 if ((readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_MGMT_ST) &&
5832 (readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_SYNC_PHY_INIT) &&
5833 nv_mgmt_acquire_sema(dev) &&
5834 nv_mgmt_get_version(dev)) {
5835 np->mac_in_use = 1;
5836 if (np->mgmt_version > 0)
5837 np->mac_in_use = readl(base + NvRegMgmtUnitControl) & NVREG_MGMTUNITCONTROL_INUSE;
5838 /* management unit setup the phy already? */
5839 if (np->mac_in_use &&
5840 ((readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_SYNC_MASK) ==
5841 NVREG_XMITCTL_SYNC_PHY_INIT)) {
5842 /* phy is inited by mgmt unit */
5843 phyinitialized = 1;
5844 } else {
5845 /* we need to init the phy */
5846 }
5847 }
5848 }
5849
5850 /* find a suitable phy */
5851 for (i = 1; i <= 32; i++) {
5852 int id1, id2;
5853 int phyaddr = i & 0x1F;
5854
5855 spin_lock_irq(&np->lock);
5856 id1 = mii_rw(dev, phyaddr, MII_PHYSID1, MII_READ);
5857 spin_unlock_irq(&np->lock);
5858 if (id1 < 0 || id1 == 0xffff)
5859 continue;
5860 spin_lock_irq(&np->lock);
5861 id2 = mii_rw(dev, phyaddr, MII_PHYSID2, MII_READ);
5862 spin_unlock_irq(&np->lock);
5863 if (id2 < 0 || id2 == 0xffff)
5864 continue;
5865
5866 np->phy_model = id2 & PHYID2_MODEL_MASK;
5867 id1 = (id1 & PHYID1_OUI_MASK) << PHYID1_OUI_SHFT;
5868 id2 = (id2 & PHYID2_OUI_MASK) >> PHYID2_OUI_SHFT;
5869 np->phyaddr = phyaddr;
5870 np->phy_oui = id1 | id2;
5871
5872 /* Realtek hardcoded phy id1 to all zero's on certain phys */
5873 if (np->phy_oui == PHY_OUI_REALTEK2)
5874 np->phy_oui = PHY_OUI_REALTEK;
5875 /* Setup phy revision for Realtek */
5876 if (np->phy_oui == PHY_OUI_REALTEK && np->phy_model == PHY_MODEL_REALTEK_8211)
5877 np->phy_rev = mii_rw(dev, phyaddr, MII_RESV1, MII_READ) & PHY_REV_MASK;
5878
5879 break;
5880 }
5881 if (i == 33) {
5882 dev_info(&pci_dev->dev, "open: Could not find a valid PHY\n");
5883 goto out_error;
5884 }
5885
5886 if (!phyinitialized) {
5887 /* reset it */
5888 phy_init(dev);
5889 } else {
5890 /* see if it is a gigabit phy */
5891 u32 mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
5892 if (mii_status & PHY_GIGABIT)
5893 np->gigabit = PHY_GIGABIT;
5894 }
5895
5896 /* set default link speed settings */
5897 np->linkspeed = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
5898 np->duplex = 0;
5899 np->autoneg = 1;
5900
5901 err = register_netdev(dev);
5902 if (err) {
5903 dev_info(&pci_dev->dev, "unable to register netdev: %d\n", err);
5904 goto out_error;
5905 }
5906
5907 if (id->driver_data & DEV_HAS_VLAN)
5908 nv_vlan_mode(dev, dev->features);
5909
5910 netif_carrier_off(dev);
5911
5912 dev_info(&pci_dev->dev, "ifname %s, PHY OUI 0x%x @ %d, addr %pM\n",
5913 dev->name, np->phy_oui, np->phyaddr, dev->dev_addr);
5914
5915 dev_info(&pci_dev->dev, "%s%s%s%s%s%s%s%s%s%s%sdesc-v%u\n",
5916 dev->features & NETIF_F_HIGHDMA ? "highdma " : "",
5917 dev->features & (NETIF_F_IP_CSUM | NETIF_F_SG) ?
5918 "csum " : "",
5919 dev->features & (NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX) ?
5920 "vlan " : "",
5921 dev->features & (NETIF_F_LOOPBACK) ?
5922 "loopback " : "",
5923 id->driver_data & DEV_HAS_POWER_CNTRL ? "pwrctl " : "",
5924 id->driver_data & DEV_HAS_MGMT_UNIT ? "mgmt " : "",
5925 id->driver_data & DEV_NEED_TIMERIRQ ? "timirq " : "",
5926 np->gigabit == PHY_GIGABIT ? "gbit " : "",
5927 np->need_linktimer ? "lnktim " : "",
5928 np->msi_flags & NV_MSI_CAPABLE ? "msi " : "",
5929 np->msi_flags & NV_MSI_X_CAPABLE ? "msi-x " : "",
5930 np->desc_ver);
5931
5932 return 0;
5933
5934out_error:
5935 if (phystate_orig)
5936 writel(phystate|NVREG_ADAPTCTL_RUNNING, base + NvRegAdapterControl);
5937 pci_set_drvdata(pci_dev, NULL);
5938out_freering:
5939 free_rings(dev);
5940out_unmap:
5941 iounmap(get_hwbase(dev));
5942out_relreg:
5943 pci_release_regions(pci_dev);
5944out_disable:
5945 pci_disable_device(pci_dev);
5946out_free:
5947 free_netdev(dev);
5948out:
5949 return err;
5950}
5951
5952static void nv_restore_phy(struct net_device *dev)
5953{
5954 struct fe_priv *np = netdev_priv(dev);
5955 u16 phy_reserved, mii_control;
5956
5957 if (np->phy_oui == PHY_OUI_REALTEK &&
5958 np->phy_model == PHY_MODEL_REALTEK_8201 &&
5959 phy_cross == NV_CROSSOVER_DETECTION_DISABLED) {
5960 mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3);
5961 phy_reserved = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG2, MII_READ);
5962 phy_reserved &= ~PHY_REALTEK_INIT_MSK1;
5963 phy_reserved |= PHY_REALTEK_INIT8;
5964 mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG2, phy_reserved);
5965 mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1);
5966
5967 /* restart auto negotiation */
5968 mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
5969 mii_control |= (BMCR_ANRESTART | BMCR_ANENABLE);
5970 mii_rw(dev, np->phyaddr, MII_BMCR, mii_control);
5971 }
5972}
5973
5974static void nv_restore_mac_addr(struct pci_dev *pci_dev)
5975{
5976 struct net_device *dev = pci_get_drvdata(pci_dev);
5977 struct fe_priv *np = netdev_priv(dev);
5978 u8 __iomem *base = get_hwbase(dev);
5979
5980 /* special op: write back the misordered MAC address - otherwise
5981 * the next nv_probe would see a wrong address.
5982 */
5983 writel(np->orig_mac[0], base + NvRegMacAddrA);
5984 writel(np->orig_mac[1], base + NvRegMacAddrB);
5985 writel(readl(base + NvRegTransmitPoll) & ~NVREG_TRANSMITPOLL_MAC_ADDR_REV,
5986 base + NvRegTransmitPoll);
5987}
5988
5989static void __devexit nv_remove(struct pci_dev *pci_dev)
5990{
5991 struct net_device *dev = pci_get_drvdata(pci_dev);
5992
5993 unregister_netdev(dev);
5994
5995 nv_restore_mac_addr(pci_dev);
5996
5997 /* restore any phy related changes */
5998 nv_restore_phy(dev);
5999
6000 nv_mgmt_release_sema(dev);
6001
6002 /* free all structures */
6003 free_rings(dev);
6004 iounmap(get_hwbase(dev));
6005 pci_release_regions(pci_dev);
6006 pci_disable_device(pci_dev);
6007 free_netdev(dev);
6008 pci_set_drvdata(pci_dev, NULL);
6009}
6010
6011#ifdef CONFIG_PM_SLEEP
6012static int nv_suspend(struct device *device)
6013{
6014 struct pci_dev *pdev = to_pci_dev(device);
6015 struct net_device *dev = pci_get_drvdata(pdev);
6016 struct fe_priv *np = netdev_priv(dev);
6017 u8 __iomem *base = get_hwbase(dev);
6018 int i;
6019
6020 if (netif_running(dev)) {
6021 /* Gross. */
6022 nv_close(dev);
6023 }
6024 netif_device_detach(dev);
6025
6026 /* save non-pci configuration space */
6027 for (i = 0; i <= np->register_size/sizeof(u32); i++)
6028 np->saved_config_space[i] = readl(base + i*sizeof(u32));
6029
6030 return 0;
6031}
6032
6033static int nv_resume(struct device *device)
6034{
6035 struct pci_dev *pdev = to_pci_dev(device);
6036 struct net_device *dev = pci_get_drvdata(pdev);
6037 struct fe_priv *np = netdev_priv(dev);
6038 u8 __iomem *base = get_hwbase(dev);
6039 int i, rc = 0;
6040
6041 /* restore non-pci configuration space */
6042 for (i = 0; i <= np->register_size/sizeof(u32); i++)
6043 writel(np->saved_config_space[i], base+i*sizeof(u32));
6044
6045 if (np->driver_data & DEV_NEED_MSI_FIX)
6046 pci_write_config_dword(pdev, NV_MSI_PRIV_OFFSET, NV_MSI_PRIV_VALUE);
6047
6048 /* restore phy state, including autoneg */
6049 phy_init(dev);
6050
6051 netif_device_attach(dev);
6052 if (netif_running(dev)) {
6053 rc = nv_open(dev);
6054 nv_set_multicast(dev);
6055 }
6056 return rc;
6057}
6058
6059static SIMPLE_DEV_PM_OPS(nv_pm_ops, nv_suspend, nv_resume);
6060#define NV_PM_OPS (&nv_pm_ops)
6061
6062#else
6063#define NV_PM_OPS NULL
6064#endif /* CONFIG_PM_SLEEP */
6065
6066#ifdef CONFIG_PM
6067static void nv_shutdown(struct pci_dev *pdev)
6068{
6069 struct net_device *dev = pci_get_drvdata(pdev);
6070 struct fe_priv *np = netdev_priv(dev);
6071
6072 if (netif_running(dev))
6073 nv_close(dev);
6074
6075 /*
6076 * Restore the MAC so a kernel started by kexec won't get confused.
6077 * If we really go for poweroff, we must not restore the MAC,
6078 * otherwise the MAC for WOL will be reversed at least on some boards.
6079 */
6080 if (system_state != SYSTEM_POWER_OFF)
6081 nv_restore_mac_addr(pdev);
6082
6083 pci_disable_device(pdev);
6084 /*
6085 * Apparently it is not possible to reinitialise from D3 hot,
6086 * only put the device into D3 if we really go for poweroff.
6087 */
6088 if (system_state == SYSTEM_POWER_OFF) {
6089 pci_wake_from_d3(pdev, np->wolenabled);
6090 pci_set_power_state(pdev, PCI_D3hot);
6091 }
6092}
6093#else
6094#define nv_shutdown NULL
6095#endif /* CONFIG_PM */
6096
6097static DEFINE_PCI_DEVICE_TABLE(pci_tbl) = {
6098 { /* nForce Ethernet Controller */
6099 PCI_DEVICE(0x10DE, 0x01C3),
6100 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
6101 },
6102 { /* nForce2 Ethernet Controller */
6103 PCI_DEVICE(0x10DE, 0x0066),
6104 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
6105 },
6106 { /* nForce3 Ethernet Controller */
6107 PCI_DEVICE(0x10DE, 0x00D6),
6108 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
6109 },
6110 { /* nForce3 Ethernet Controller */
6111 PCI_DEVICE(0x10DE, 0x0086),
6112 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
6113 },
6114 { /* nForce3 Ethernet Controller */
6115 PCI_DEVICE(0x10DE, 0x008C),
6116 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
6117 },
6118 { /* nForce3 Ethernet Controller */
6119 PCI_DEVICE(0x10DE, 0x00E6),
6120 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
6121 },
6122 { /* nForce3 Ethernet Controller */
6123 PCI_DEVICE(0x10DE, 0x00DF),
6124 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
6125 },
6126 { /* CK804 Ethernet Controller */
6127 PCI_DEVICE(0x10DE, 0x0056),
6128 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
6129 },
6130 { /* CK804 Ethernet Controller */
6131 PCI_DEVICE(0x10DE, 0x0057),
6132 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
6133 },
6134 { /* MCP04 Ethernet Controller */
6135 PCI_DEVICE(0x10DE, 0x0037),
6136 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
6137 },
6138 { /* MCP04 Ethernet Controller */
6139 PCI_DEVICE(0x10DE, 0x0038),
6140 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
6141 },
6142 { /* MCP51 Ethernet Controller */
6143 PCI_DEVICE(0x10DE, 0x0268),
6144 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V1|DEV_NEED_LOW_POWER_FIX,
6145 },
6146 { /* MCP51 Ethernet Controller */
6147 PCI_DEVICE(0x10DE, 0x0269),
6148 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V1|DEV_NEED_LOW_POWER_FIX,
6149 },
6150 { /* MCP55 Ethernet Controller */
6151 PCI_DEVICE(0x10DE, 0x0372),
6152 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_VLAN|DEV_HAS_MSI|DEV_HAS_MSI_X|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_NEED_TX_LIMIT|DEV_NEED_MSI_FIX,
6153 },
6154 { /* MCP55 Ethernet Controller */
6155 PCI_DEVICE(0x10DE, 0x0373),
6156 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_VLAN|DEV_HAS_MSI|DEV_HAS_MSI_X|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_NEED_TX_LIMIT|DEV_NEED_MSI_FIX,
6157 },
6158 { /* MCP61 Ethernet Controller */
6159 PCI_DEVICE(0x10DE, 0x03E5),
6160 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_MSI_FIX,
6161 },
6162 { /* MCP61 Ethernet Controller */
6163 PCI_DEVICE(0x10DE, 0x03E6),
6164 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_MSI_FIX,
6165 },
6166 { /* MCP61 Ethernet Controller */
6167 PCI_DEVICE(0x10DE, 0x03EE),
6168 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_MSI_FIX,
6169 },
6170 { /* MCP61 Ethernet Controller */
6171 PCI_DEVICE(0x10DE, 0x03EF),
6172 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_MSI_FIX,
6173 },
6174 { /* MCP65 Ethernet Controller */
6175 PCI_DEVICE(0x10DE, 0x0450),
6176 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6177 },
6178 { /* MCP65 Ethernet Controller */
6179 PCI_DEVICE(0x10DE, 0x0451),
6180 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6181 },
6182 { /* MCP65 Ethernet Controller */
6183 PCI_DEVICE(0x10DE, 0x0452),
6184 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6185 },
6186 { /* MCP65 Ethernet Controller */
6187 PCI_DEVICE(0x10DE, 0x0453),
6188 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6189 },
6190 { /* MCP67 Ethernet Controller */
6191 PCI_DEVICE(0x10DE, 0x054C),
6192 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6193 },
6194 { /* MCP67 Ethernet Controller */
6195 PCI_DEVICE(0x10DE, 0x054D),
6196 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6197 },
6198 { /* MCP67 Ethernet Controller */
6199 PCI_DEVICE(0x10DE, 0x054E),
6200 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6201 },
6202 { /* MCP67 Ethernet Controller */
6203 PCI_DEVICE(0x10DE, 0x054F),
6204 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6205 },
6206 { /* MCP73 Ethernet Controller */
6207 PCI_DEVICE(0x10DE, 0x07DC),
6208 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6209 },
6210 { /* MCP73 Ethernet Controller */
6211 PCI_DEVICE(0x10DE, 0x07DD),
6212 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6213 },
6214 { /* MCP73 Ethernet Controller */
6215 PCI_DEVICE(0x10DE, 0x07DE),
6216 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6217 },
6218 { /* MCP73 Ethernet Controller */
6219 PCI_DEVICE(0x10DE, 0x07DF),
6220 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6221 },
6222 { /* MCP77 Ethernet Controller */
6223 PCI_DEVICE(0x10DE, 0x0760),
6224 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V2|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
6225 },
6226 { /* MCP77 Ethernet Controller */
6227 PCI_DEVICE(0x10DE, 0x0761),
6228 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V2|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
6229 },
6230 { /* MCP77 Ethernet Controller */
6231 PCI_DEVICE(0x10DE, 0x0762),
6232 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V2|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
6233 },
6234 { /* MCP77 Ethernet Controller */
6235 PCI_DEVICE(0x10DE, 0x0763),
6236 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V2|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
6237 },
6238 { /* MCP79 Ethernet Controller */
6239 PCI_DEVICE(0x10DE, 0x0AB0),
6240 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
6241 },
6242 { /* MCP79 Ethernet Controller */
6243 PCI_DEVICE(0x10DE, 0x0AB1),
6244 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
6245 },
6246 { /* MCP79 Ethernet Controller */
6247 PCI_DEVICE(0x10DE, 0x0AB2),
6248 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
6249 },
6250 { /* MCP79 Ethernet Controller */
6251 PCI_DEVICE(0x10DE, 0x0AB3),
6252 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
6253 },
6254 { /* MCP89 Ethernet Controller */
6255 PCI_DEVICE(0x10DE, 0x0D7D),
6256 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX,
6257 },
6258 {0,},
6259};
6260
6261static struct pci_driver driver = {
6262 .name = DRV_NAME,
6263 .id_table = pci_tbl,
6264 .probe = nv_probe,
6265 .remove = __devexit_p(nv_remove),
6266 .shutdown = nv_shutdown,
6267 .driver.pm = NV_PM_OPS,
6268};
6269
6270static int __init init_nic(void)
6271{
6272 return pci_register_driver(&driver);
6273}
6274
6275static void __exit exit_nic(void)
6276{
6277 pci_unregister_driver(&driver);
6278}
6279
6280module_param(max_interrupt_work, int, 0);
6281MODULE_PARM_DESC(max_interrupt_work, "forcedeth maximum events handled per interrupt");
6282module_param(optimization_mode, int, 0);
6283MODULE_PARM_DESC(optimization_mode, "In throughput mode (0), every tx & rx packet will generate an interrupt. In CPU mode (1), interrupts are controlled by a timer. In dynamic mode (2), the mode toggles between throughput and CPU mode based on network load.");
6284module_param(poll_interval, int, 0);
6285MODULE_PARM_DESC(poll_interval, "Interval determines how frequent timer interrupt is generated by [(time_in_micro_secs * 100) / (2^10)]. Min is 0 and Max is 65535.");
6286module_param(msi, int, 0);
6287MODULE_PARM_DESC(msi, "MSI interrupts are enabled by setting to 1 and disabled by setting to 0.");
6288module_param(msix, int, 0);
6289MODULE_PARM_DESC(msix, "MSIX interrupts are enabled by setting to 1 and disabled by setting to 0.");
6290module_param(dma_64bit, int, 0);
6291MODULE_PARM_DESC(dma_64bit, "High DMA is enabled by setting to 1 and disabled by setting to 0.");
6292module_param(phy_cross, int, 0);
6293MODULE_PARM_DESC(phy_cross, "Phy crossover detection for Realtek 8201 phy is enabled by setting to 1 and disabled by setting to 0.");
6294module_param(phy_power_down, int, 0);
6295MODULE_PARM_DESC(phy_power_down, "Power down phy and disable link when interface is down (1), or leave phy powered up (0).");
6296module_param(debug_tx_timeout, bool, 0);
6297MODULE_PARM_DESC(debug_tx_timeout,
6298 "Dump tx related registers and ring when tx_timeout happens");
6299
6300MODULE_AUTHOR("Manfred Spraul <manfred@colorfullife.com>");
6301MODULE_DESCRIPTION("Reverse Engineered nForce ethernet driver");
6302MODULE_LICENSE("GPL");
6303
6304MODULE_DEVICE_TABLE(pci, pci_tbl);
6305
6306module_init(init_nic);
6307module_exit(exit_nic);