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1/*
2 * New driver for Marvell Yukon 2 chipset.
3 * Based on earlier sk98lin, and skge driver.
4 *
5 * This driver intentionally does not support all the features
6 * of the original driver such as link fail-over and link management because
7 * those should be done at higher levels.
8 *
9 * Copyright (C) 2005 Stephen Hemminger <shemminger@osdl.org>
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 */
24
25#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
26
27#include <linux/crc32.h>
28#include <linux/kernel.h>
29#include <linux/module.h>
30#include <linux/netdevice.h>
31#include <linux/dma-mapping.h>
32#include <linux/etherdevice.h>
33#include <linux/ethtool.h>
34#include <linux/pci.h>
35#include <linux/interrupt.h>
36#include <linux/ip.h>
37#include <linux/slab.h>
38#include <net/ip.h>
39#include <linux/tcp.h>
40#include <linux/in.h>
41#include <linux/delay.h>
42#include <linux/workqueue.h>
43#include <linux/if_vlan.h>
44#include <linux/prefetch.h>
45#include <linux/debugfs.h>
46#include <linux/mii.h>
47#include <linux/of_device.h>
48#include <linux/of_net.h>
49
50#include <asm/irq.h>
51
52#include "sky2.h"
53
54#define DRV_NAME "sky2"
55#define DRV_VERSION "1.30"
56
57/*
58 * The Yukon II chipset takes 64 bit command blocks (called list elements)
59 * that are organized into three (receive, transmit, status) different rings
60 * similar to Tigon3.
61 */
62
63#define RX_LE_SIZE 1024
64#define RX_LE_BYTES (RX_LE_SIZE*sizeof(struct sky2_rx_le))
65#define RX_MAX_PENDING (RX_LE_SIZE/6 - 2)
66#define RX_DEF_PENDING RX_MAX_PENDING
67
68/* This is the worst case number of transmit list elements for a single skb:
69 VLAN:GSO + CKSUM + Data + skb_frags * DMA */
70#define MAX_SKB_TX_LE (2 + (sizeof(dma_addr_t)/sizeof(u32))*(MAX_SKB_FRAGS+1))
71#define TX_MIN_PENDING (MAX_SKB_TX_LE+1)
72#define TX_MAX_PENDING 1024
73#define TX_DEF_PENDING 63
74
75#define TX_WATCHDOG (5 * HZ)
76#define NAPI_WEIGHT 64
77#define PHY_RETRIES 1000
78
79#define SKY2_EEPROM_MAGIC 0x9955aabb
80
81#define RING_NEXT(x, s) (((x)+1) & ((s)-1))
82
83static const u32 default_msg =
84 NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK
85 | NETIF_MSG_TIMER | NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR
86 | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN;
87
88static int debug = -1; /* defaults above */
89module_param(debug, int, 0);
90MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
91
92static int copybreak __read_mostly = 128;
93module_param(copybreak, int, 0);
94MODULE_PARM_DESC(copybreak, "Receive copy threshold");
95
96static int disable_msi = 0;
97module_param(disable_msi, int, 0);
98MODULE_PARM_DESC(disable_msi, "Disable Message Signaled Interrupt (MSI)");
99
100static int legacy_pme = 0;
101module_param(legacy_pme, int, 0);
102MODULE_PARM_DESC(legacy_pme, "Legacy power management");
103
104static const struct pci_device_id sky2_id_table[] = {
105 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9000) }, /* SK-9Sxx */
106 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E00) }, /* SK-9Exx */
107 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E01) }, /* SK-9E21M */
108 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4b00) }, /* DGE-560T */
109 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4001) }, /* DGE-550SX */
110 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B02) }, /* DGE-560SX */
111 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B03) }, /* DGE-550T */
112 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4340) }, /* 88E8021 */
113 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4341) }, /* 88E8022 */
114 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4342) }, /* 88E8061 */
115 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4343) }, /* 88E8062 */
116 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4344) }, /* 88E8021 */
117 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4345) }, /* 88E8022 */
118 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4346) }, /* 88E8061 */
119 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4347) }, /* 88E8062 */
120 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4350) }, /* 88E8035 */
121 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4351) }, /* 88E8036 */
122 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4352) }, /* 88E8038 */
123 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4353) }, /* 88E8039 */
124 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4354) }, /* 88E8040 */
125 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4355) }, /* 88E8040T */
126 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4356) }, /* 88EC033 */
127 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4357) }, /* 88E8042 */
128 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x435A) }, /* 88E8048 */
129 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4360) }, /* 88E8052 */
130 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4361) }, /* 88E8050 */
131 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4362) }, /* 88E8053 */
132 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4363) }, /* 88E8055 */
133 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4364) }, /* 88E8056 */
134 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4365) }, /* 88E8070 */
135 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4366) }, /* 88EC036 */
136 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4367) }, /* 88EC032 */
137 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4368) }, /* 88EC034 */
138 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4369) }, /* 88EC042 */
139 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436A) }, /* 88E8058 */
140 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436B) }, /* 88E8071 */
141 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436C) }, /* 88E8072 */
142 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436D) }, /* 88E8055 */
143 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4370) }, /* 88E8075 */
144 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4380) }, /* 88E8057 */
145 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4381) }, /* 88E8059 */
146 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4382) }, /* 88E8079 */
147 { 0 }
148};
149
150MODULE_DEVICE_TABLE(pci, sky2_id_table);
151
152/* Avoid conditionals by using array */
153static const unsigned txqaddr[] = { Q_XA1, Q_XA2 };
154static const unsigned rxqaddr[] = { Q_R1, Q_R2 };
155static const u32 portirq_msk[] = { Y2_IS_PORT_1, Y2_IS_PORT_2 };
156
157static void sky2_set_multicast(struct net_device *dev);
158static irqreturn_t sky2_intr(int irq, void *dev_id);
159
160/* Access to PHY via serial interconnect */
161static int gm_phy_write(struct sky2_hw *hw, unsigned port, u16 reg, u16 val)
162{
163 int i;
164
165 gma_write16(hw, port, GM_SMI_DATA, val);
166 gma_write16(hw, port, GM_SMI_CTRL,
167 GM_SMI_CT_PHY_AD(PHY_ADDR_MARV) | GM_SMI_CT_REG_AD(reg));
168
169 for (i = 0; i < PHY_RETRIES; i++) {
170 u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL);
171 if (ctrl == 0xffff)
172 goto io_error;
173
174 if (!(ctrl & GM_SMI_CT_BUSY))
175 return 0;
176
177 udelay(10);
178 }
179
180 dev_warn(&hw->pdev->dev, "%s: phy write timeout\n", hw->dev[port]->name);
181 return -ETIMEDOUT;
182
183io_error:
184 dev_err(&hw->pdev->dev, "%s: phy I/O error\n", hw->dev[port]->name);
185 return -EIO;
186}
187
188static int __gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg, u16 *val)
189{
190 int i;
191
192 gma_write16(hw, port, GM_SMI_CTRL, GM_SMI_CT_PHY_AD(PHY_ADDR_MARV)
193 | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
194
195 for (i = 0; i < PHY_RETRIES; i++) {
196 u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL);
197 if (ctrl == 0xffff)
198 goto io_error;
199
200 if (ctrl & GM_SMI_CT_RD_VAL) {
201 *val = gma_read16(hw, port, GM_SMI_DATA);
202 return 0;
203 }
204
205 udelay(10);
206 }
207
208 dev_warn(&hw->pdev->dev, "%s: phy read timeout\n", hw->dev[port]->name);
209 return -ETIMEDOUT;
210io_error:
211 dev_err(&hw->pdev->dev, "%s: phy I/O error\n", hw->dev[port]->name);
212 return -EIO;
213}
214
215static inline u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg)
216{
217 u16 v;
218 __gm_phy_read(hw, port, reg, &v);
219 return v;
220}
221
222
223static void sky2_power_on(struct sky2_hw *hw)
224{
225 /* switch power to VCC (WA for VAUX problem) */
226 sky2_write8(hw, B0_POWER_CTRL,
227 PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON);
228
229 /* disable Core Clock Division, */
230 sky2_write32(hw, B2_Y2_CLK_CTRL, Y2_CLK_DIV_DIS);
231
232 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > CHIP_REV_YU_XL_A1)
233 /* enable bits are inverted */
234 sky2_write8(hw, B2_Y2_CLK_GATE,
235 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
236 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
237 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
238 else
239 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
240
241 if (hw->flags & SKY2_HW_ADV_POWER_CTL) {
242 u32 reg;
243
244 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
245
246 reg = sky2_pci_read32(hw, PCI_DEV_REG4);
247 /* set all bits to 0 except bits 15..12 and 8 */
248 reg &= P_ASPM_CONTROL_MSK;
249 sky2_pci_write32(hw, PCI_DEV_REG4, reg);
250
251 reg = sky2_pci_read32(hw, PCI_DEV_REG5);
252 /* set all bits to 0 except bits 28 & 27 */
253 reg &= P_CTL_TIM_VMAIN_AV_MSK;
254 sky2_pci_write32(hw, PCI_DEV_REG5, reg);
255
256 sky2_pci_write32(hw, PCI_CFG_REG_1, 0);
257
258 sky2_write16(hw, B0_CTST, Y2_HW_WOL_ON);
259
260 /* Enable workaround for dev 4.107 on Yukon-Ultra & Extreme */
261 reg = sky2_read32(hw, B2_GP_IO);
262 reg |= GLB_GPIO_STAT_RACE_DIS;
263 sky2_write32(hw, B2_GP_IO, reg);
264
265 sky2_read32(hw, B2_GP_IO);
266 }
267
268 /* Turn on "driver loaded" LED */
269 sky2_write16(hw, B0_CTST, Y2_LED_STAT_ON);
270}
271
272static void sky2_power_aux(struct sky2_hw *hw)
273{
274 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > CHIP_REV_YU_XL_A1)
275 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
276 else
277 /* enable bits are inverted */
278 sky2_write8(hw, B2_Y2_CLK_GATE,
279 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
280 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
281 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
282
283 /* switch power to VAUX if supported and PME from D3cold */
284 if ( (sky2_read32(hw, B0_CTST) & Y2_VAUX_AVAIL) &&
285 pci_pme_capable(hw->pdev, PCI_D3cold))
286 sky2_write8(hw, B0_POWER_CTRL,
287 (PC_VAUX_ENA | PC_VCC_ENA |
288 PC_VAUX_ON | PC_VCC_OFF));
289
290 /* turn off "driver loaded LED" */
291 sky2_write16(hw, B0_CTST, Y2_LED_STAT_OFF);
292}
293
294static void sky2_gmac_reset(struct sky2_hw *hw, unsigned port)
295{
296 u16 reg;
297
298 /* disable all GMAC IRQ's */
299 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
300
301 gma_write16(hw, port, GM_MC_ADDR_H1, 0); /* clear MC hash */
302 gma_write16(hw, port, GM_MC_ADDR_H2, 0);
303 gma_write16(hw, port, GM_MC_ADDR_H3, 0);
304 gma_write16(hw, port, GM_MC_ADDR_H4, 0);
305
306 reg = gma_read16(hw, port, GM_RX_CTRL);
307 reg |= GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA;
308 gma_write16(hw, port, GM_RX_CTRL, reg);
309}
310
311/* flow control to advertise bits */
312static const u16 copper_fc_adv[] = {
313 [FC_NONE] = 0,
314 [FC_TX] = PHY_M_AN_ASP,
315 [FC_RX] = PHY_M_AN_PC,
316 [FC_BOTH] = PHY_M_AN_PC | PHY_M_AN_ASP,
317};
318
319/* flow control to advertise bits when using 1000BaseX */
320static const u16 fiber_fc_adv[] = {
321 [FC_NONE] = PHY_M_P_NO_PAUSE_X,
322 [FC_TX] = PHY_M_P_ASYM_MD_X,
323 [FC_RX] = PHY_M_P_SYM_MD_X,
324 [FC_BOTH] = PHY_M_P_BOTH_MD_X,
325};
326
327/* flow control to GMA disable bits */
328static const u16 gm_fc_disable[] = {
329 [FC_NONE] = GM_GPCR_FC_RX_DIS | GM_GPCR_FC_TX_DIS,
330 [FC_TX] = GM_GPCR_FC_RX_DIS,
331 [FC_RX] = GM_GPCR_FC_TX_DIS,
332 [FC_BOTH] = 0,
333};
334
335
336static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
337{
338 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
339 u16 ctrl, ct1000, adv, pg, ledctrl, ledover, reg;
340
341 if ( (sky2->flags & SKY2_FLAG_AUTO_SPEED) &&
342 !(hw->flags & SKY2_HW_NEWER_PHY)) {
343 u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
344
345 ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK |
346 PHY_M_EC_MAC_S_MSK);
347 ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);
348
349 /* on PHY 88E1040 Rev.D0 (and newer) downshift control changed */
350 if (hw->chip_id == CHIP_ID_YUKON_EC)
351 /* set downshift counter to 3x and enable downshift */
352 ectrl |= PHY_M_EC_DSC_2(2) | PHY_M_EC_DOWN_S_ENA;
353 else
354 /* set master & slave downshift counter to 1x */
355 ectrl |= PHY_M_EC_M_DSC(0) | PHY_M_EC_S_DSC(1);
356
357 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
358 }
359
360 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
361 if (sky2_is_copper(hw)) {
362 if (!(hw->flags & SKY2_HW_GIGABIT)) {
363 /* enable automatic crossover */
364 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO) >> 1;
365
366 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
367 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
368 u16 spec;
369
370 /* Enable Class A driver for FE+ A0 */
371 spec = gm_phy_read(hw, port, PHY_MARV_FE_SPEC_2);
372 spec |= PHY_M_FESC_SEL_CL_A;
373 gm_phy_write(hw, port, PHY_MARV_FE_SPEC_2, spec);
374 }
375 } else {
376 /* disable energy detect */
377 ctrl &= ~PHY_M_PC_EN_DET_MSK;
378
379 /* enable automatic crossover */
380 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO);
381
382 /* downshift on PHY 88E1112 and 88E1149 is changed */
383 if ( (sky2->flags & SKY2_FLAG_AUTO_SPEED) &&
384 (hw->flags & SKY2_HW_NEWER_PHY)) {
385 /* set downshift counter to 3x and enable downshift */
386 ctrl &= ~PHY_M_PC_DSC_MSK;
387 ctrl |= PHY_M_PC_DSC(2) | PHY_M_PC_DOWN_S_ENA;
388 }
389 }
390 } else {
391 /* workaround for deviation #4.88 (CRC errors) */
392 /* disable Automatic Crossover */
393
394 ctrl &= ~PHY_M_PC_MDIX_MSK;
395 }
396
397 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
398
399 /* special setup for PHY 88E1112 Fiber */
400 if (hw->chip_id == CHIP_ID_YUKON_XL && (hw->flags & SKY2_HW_FIBRE_PHY)) {
401 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
402
403 /* Fiber: select 1000BASE-X only mode MAC Specific Ctrl Reg. */
404 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
405 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
406 ctrl &= ~PHY_M_MAC_MD_MSK;
407 ctrl |= PHY_M_MAC_MODE_SEL(PHY_M_MAC_MD_1000BX);
408 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
409
410 if (hw->pmd_type == 'P') {
411 /* select page 1 to access Fiber registers */
412 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 1);
413
414 /* for SFP-module set SIGDET polarity to low */
415 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
416 ctrl |= PHY_M_FIB_SIGD_POL;
417 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
418 }
419
420 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
421 }
422
423 ctrl = PHY_CT_RESET;
424 ct1000 = 0;
425 adv = PHY_AN_CSMA;
426 reg = 0;
427
428 if (sky2->flags & SKY2_FLAG_AUTO_SPEED) {
429 if (sky2_is_copper(hw)) {
430 if (sky2->advertising & ADVERTISED_1000baseT_Full)
431 ct1000 |= PHY_M_1000C_AFD;
432 if (sky2->advertising & ADVERTISED_1000baseT_Half)
433 ct1000 |= PHY_M_1000C_AHD;
434 if (sky2->advertising & ADVERTISED_100baseT_Full)
435 adv |= PHY_M_AN_100_FD;
436 if (sky2->advertising & ADVERTISED_100baseT_Half)
437 adv |= PHY_M_AN_100_HD;
438 if (sky2->advertising & ADVERTISED_10baseT_Full)
439 adv |= PHY_M_AN_10_FD;
440 if (sky2->advertising & ADVERTISED_10baseT_Half)
441 adv |= PHY_M_AN_10_HD;
442
443 } else { /* special defines for FIBER (88E1040S only) */
444 if (sky2->advertising & ADVERTISED_1000baseT_Full)
445 adv |= PHY_M_AN_1000X_AFD;
446 if (sky2->advertising & ADVERTISED_1000baseT_Half)
447 adv |= PHY_M_AN_1000X_AHD;
448 }
449
450 /* Restart Auto-negotiation */
451 ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
452 } else {
453 /* forced speed/duplex settings */
454 ct1000 = PHY_M_1000C_MSE;
455
456 /* Disable auto update for duplex flow control and duplex */
457 reg |= GM_GPCR_AU_DUP_DIS | GM_GPCR_AU_SPD_DIS;
458
459 switch (sky2->speed) {
460 case SPEED_1000:
461 ctrl |= PHY_CT_SP1000;
462 reg |= GM_GPCR_SPEED_1000;
463 break;
464 case SPEED_100:
465 ctrl |= PHY_CT_SP100;
466 reg |= GM_GPCR_SPEED_100;
467 break;
468 }
469
470 if (sky2->duplex == DUPLEX_FULL) {
471 reg |= GM_GPCR_DUP_FULL;
472 ctrl |= PHY_CT_DUP_MD;
473 } else if (sky2->speed < SPEED_1000)
474 sky2->flow_mode = FC_NONE;
475 }
476
477 if (sky2->flags & SKY2_FLAG_AUTO_PAUSE) {
478 if (sky2_is_copper(hw))
479 adv |= copper_fc_adv[sky2->flow_mode];
480 else
481 adv |= fiber_fc_adv[sky2->flow_mode];
482 } else {
483 reg |= GM_GPCR_AU_FCT_DIS;
484 reg |= gm_fc_disable[sky2->flow_mode];
485
486 /* Forward pause packets to GMAC? */
487 if (sky2->flow_mode & FC_RX)
488 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
489 else
490 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
491 }
492
493 gma_write16(hw, port, GM_GP_CTRL, reg);
494
495 if (hw->flags & SKY2_HW_GIGABIT)
496 gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);
497
498 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
499 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
500
501 /* Setup Phy LED's */
502 ledctrl = PHY_M_LED_PULS_DUR(PULS_170MS);
503 ledover = 0;
504
505 switch (hw->chip_id) {
506 case CHIP_ID_YUKON_FE:
507 /* on 88E3082 these bits are at 11..9 (shifted left) */
508 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) << 1;
509
510 ctrl = gm_phy_read(hw, port, PHY_MARV_FE_LED_PAR);
511
512 /* delete ACT LED control bits */
513 ctrl &= ~PHY_M_FELP_LED1_MSK;
514 /* change ACT LED control to blink mode */
515 ctrl |= PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_ACT_BL);
516 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
517 break;
518
519 case CHIP_ID_YUKON_FE_P:
520 /* Enable Link Partner Next Page */
521 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
522 ctrl |= PHY_M_PC_ENA_LIP_NP;
523
524 /* disable Energy Detect and enable scrambler */
525 ctrl &= ~(PHY_M_PC_ENA_ENE_DT | PHY_M_PC_DIS_SCRAMB);
526 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
527
528 /* set LED2 -> ACT, LED1 -> LINK, LED0 -> SPEED */
529 ctrl = PHY_M_FELP_LED2_CTRL(LED_PAR_CTRL_ACT_BL) |
530 PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_LINK) |
531 PHY_M_FELP_LED0_CTRL(LED_PAR_CTRL_SPEED);
532
533 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
534 break;
535
536 case CHIP_ID_YUKON_XL:
537 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
538
539 /* select page 3 to access LED control register */
540 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
541
542 /* set LED Function Control register */
543 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
544 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
545 PHY_M_LEDC_INIT_CTRL(7) | /* 10 Mbps */
546 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
547 PHY_M_LEDC_STA0_CTRL(7))); /* 1000 Mbps */
548
549 /* set Polarity Control register */
550 gm_phy_write(hw, port, PHY_MARV_PHY_STAT,
551 (PHY_M_POLC_LS1_P_MIX(4) |
552 PHY_M_POLC_IS0_P_MIX(4) |
553 PHY_M_POLC_LOS_CTRL(2) |
554 PHY_M_POLC_INIT_CTRL(2) |
555 PHY_M_POLC_STA1_CTRL(2) |
556 PHY_M_POLC_STA0_CTRL(2)));
557
558 /* restore page register */
559 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
560 break;
561
562 case CHIP_ID_YUKON_EC_U:
563 case CHIP_ID_YUKON_EX:
564 case CHIP_ID_YUKON_SUPR:
565 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
566
567 /* select page 3 to access LED control register */
568 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
569
570 /* set LED Function Control register */
571 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
572 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
573 PHY_M_LEDC_INIT_CTRL(8) | /* 10 Mbps */
574 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
575 PHY_M_LEDC_STA0_CTRL(7)));/* 1000 Mbps */
576
577 /* set Blink Rate in LED Timer Control Register */
578 gm_phy_write(hw, port, PHY_MARV_INT_MASK,
579 ledctrl | PHY_M_LED_BLINK_RT(BLINK_84MS));
580 /* restore page register */
581 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
582 break;
583
584 default:
585 /* set Tx LED (LED_TX) to blink mode on Rx OR Tx activity */
586 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) | PHY_M_LEDC_TX_CTRL;
587
588 /* turn off the Rx LED (LED_RX) */
589 ledover |= PHY_M_LED_MO_RX(MO_LED_OFF);
590 }
591
592 if (hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_UL_2) {
593 /* apply fixes in PHY AFE */
594 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 255);
595
596 /* increase differential signal amplitude in 10BASE-T */
597 gm_phy_write(hw, port, 0x18, 0xaa99);
598 gm_phy_write(hw, port, 0x17, 0x2011);
599
600 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
601 /* fix for IEEE A/B Symmetry failure in 1000BASE-T */
602 gm_phy_write(hw, port, 0x18, 0xa204);
603 gm_phy_write(hw, port, 0x17, 0x2002);
604 }
605
606 /* set page register to 0 */
607 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
608 } else if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
609 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
610 /* apply workaround for integrated resistors calibration */
611 gm_phy_write(hw, port, PHY_MARV_PAGE_ADDR, 17);
612 gm_phy_write(hw, port, PHY_MARV_PAGE_DATA, 0x3f60);
613 } else if (hw->chip_id == CHIP_ID_YUKON_OPT && hw->chip_rev == 0) {
614 /* apply fixes in PHY AFE */
615 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0x00ff);
616
617 /* apply RDAC termination workaround */
618 gm_phy_write(hw, port, 24, 0x2800);
619 gm_phy_write(hw, port, 23, 0x2001);
620
621 /* set page register back to 0 */
622 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
623 } else if (hw->chip_id != CHIP_ID_YUKON_EX &&
624 hw->chip_id < CHIP_ID_YUKON_SUPR) {
625 /* no effect on Yukon-XL */
626 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
627
628 if (!(sky2->flags & SKY2_FLAG_AUTO_SPEED) ||
629 sky2->speed == SPEED_100) {
630 /* turn on 100 Mbps LED (LED_LINK100) */
631 ledover |= PHY_M_LED_MO_100(MO_LED_ON);
632 }
633
634 if (ledover)
635 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
636
637 } else if (hw->chip_id == CHIP_ID_YUKON_PRM &&
638 (sky2_read8(hw, B2_MAC_CFG) & 0xf) == 0x7) {
639 int i;
640 /* This a phy register setup workaround copied from vendor driver. */
641 static const struct {
642 u16 reg, val;
643 } eee_afe[] = {
644 { 0x156, 0x58ce },
645 { 0x153, 0x99eb },
646 { 0x141, 0x8064 },
647 /* { 0x155, 0x130b },*/
648 { 0x000, 0x0000 },
649 { 0x151, 0x8433 },
650 { 0x14b, 0x8c44 },
651 { 0x14c, 0x0f90 },
652 { 0x14f, 0x39aa },
653 /* { 0x154, 0x2f39 },*/
654 { 0x14d, 0xba33 },
655 { 0x144, 0x0048 },
656 { 0x152, 0x2010 },
657 /* { 0x158, 0x1223 },*/
658 { 0x140, 0x4444 },
659 { 0x154, 0x2f3b },
660 { 0x158, 0xb203 },
661 { 0x157, 0x2029 },
662 };
663
664 /* Start Workaround for OptimaEEE Rev.Z0 */
665 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0x00fb);
666
667 gm_phy_write(hw, port, 1, 0x4099);
668 gm_phy_write(hw, port, 3, 0x1120);
669 gm_phy_write(hw, port, 11, 0x113c);
670 gm_phy_write(hw, port, 14, 0x8100);
671 gm_phy_write(hw, port, 15, 0x112a);
672 gm_phy_write(hw, port, 17, 0x1008);
673
674 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0x00fc);
675 gm_phy_write(hw, port, 1, 0x20b0);
676
677 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0x00ff);
678
679 for (i = 0; i < ARRAY_SIZE(eee_afe); i++) {
680 /* apply AFE settings */
681 gm_phy_write(hw, port, 17, eee_afe[i].val);
682 gm_phy_write(hw, port, 16, eee_afe[i].reg | 1u<<13);
683 }
684
685 /* End Workaround for OptimaEEE */
686 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
687
688 /* Enable 10Base-Te (EEE) */
689 if (hw->chip_id >= CHIP_ID_YUKON_PRM) {
690 reg = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
691 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL,
692 reg | PHY_M_10B_TE_ENABLE);
693 }
694 }
695
696 /* Enable phy interrupt on auto-negotiation complete (or link up) */
697 if (sky2->flags & SKY2_FLAG_AUTO_SPEED)
698 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_COMPL);
699 else
700 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
701}
702
703static const u32 phy_power[] = { PCI_Y2_PHY1_POWD, PCI_Y2_PHY2_POWD };
704static const u32 coma_mode[] = { PCI_Y2_PHY1_COMA, PCI_Y2_PHY2_COMA };
705
706static void sky2_phy_power_up(struct sky2_hw *hw, unsigned port)
707{
708 u32 reg1;
709
710 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
711 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
712 reg1 &= ~phy_power[port];
713
714 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > CHIP_REV_YU_XL_A1)
715 reg1 |= coma_mode[port];
716
717 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
718 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
719 sky2_pci_read32(hw, PCI_DEV_REG1);
720
721 if (hw->chip_id == CHIP_ID_YUKON_FE)
722 gm_phy_write(hw, port, PHY_MARV_CTRL, PHY_CT_ANE);
723 else if (hw->flags & SKY2_HW_ADV_POWER_CTL)
724 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
725}
726
727static void sky2_phy_power_down(struct sky2_hw *hw, unsigned port)
728{
729 u32 reg1;
730 u16 ctrl;
731
732 /* release GPHY Control reset */
733 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
734
735 /* release GMAC reset */
736 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
737
738 if (hw->flags & SKY2_HW_NEWER_PHY) {
739 /* select page 2 to access MAC control register */
740 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
741
742 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
743 /* allow GMII Power Down */
744 ctrl &= ~PHY_M_MAC_GMIF_PUP;
745 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
746
747 /* set page register back to 0 */
748 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
749 }
750
751 /* setup General Purpose Control Register */
752 gma_write16(hw, port, GM_GP_CTRL,
753 GM_GPCR_FL_PASS | GM_GPCR_SPEED_100 |
754 GM_GPCR_AU_DUP_DIS | GM_GPCR_AU_FCT_DIS |
755 GM_GPCR_AU_SPD_DIS);
756
757 if (hw->chip_id != CHIP_ID_YUKON_EC) {
758 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
759 /* select page 2 to access MAC control register */
760 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
761
762 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
763 /* enable Power Down */
764 ctrl |= PHY_M_PC_POW_D_ENA;
765 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
766
767 /* set page register back to 0 */
768 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
769 }
770
771 /* set IEEE compatible Power Down Mode (dev. #4.99) */
772 gm_phy_write(hw, port, PHY_MARV_CTRL, PHY_CT_PDOWN);
773 }
774
775 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
776 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
777 reg1 |= phy_power[port]; /* set PHY to PowerDown/COMA Mode */
778 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
779 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
780}
781
782/* configure IPG according to used link speed */
783static void sky2_set_ipg(struct sky2_port *sky2)
784{
785 u16 reg;
786
787 reg = gma_read16(sky2->hw, sky2->port, GM_SERIAL_MODE);
788 reg &= ~GM_SMOD_IPG_MSK;
789 if (sky2->speed > SPEED_100)
790 reg |= IPG_DATA_VAL(IPG_DATA_DEF_1000);
791 else
792 reg |= IPG_DATA_VAL(IPG_DATA_DEF_10_100);
793 gma_write16(sky2->hw, sky2->port, GM_SERIAL_MODE, reg);
794}
795
796/* Enable Rx/Tx */
797static void sky2_enable_rx_tx(struct sky2_port *sky2)
798{
799 struct sky2_hw *hw = sky2->hw;
800 unsigned port = sky2->port;
801 u16 reg;
802
803 reg = gma_read16(hw, port, GM_GP_CTRL);
804 reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
805 gma_write16(hw, port, GM_GP_CTRL, reg);
806}
807
808/* Force a renegotiation */
809static void sky2_phy_reinit(struct sky2_port *sky2)
810{
811 spin_lock_bh(&sky2->phy_lock);
812 sky2_phy_init(sky2->hw, sky2->port);
813 sky2_enable_rx_tx(sky2);
814 spin_unlock_bh(&sky2->phy_lock);
815}
816
817/* Put device in state to listen for Wake On Lan */
818static void sky2_wol_init(struct sky2_port *sky2)
819{
820 struct sky2_hw *hw = sky2->hw;
821 unsigned port = sky2->port;
822 enum flow_control save_mode;
823 u16 ctrl;
824
825 /* Bring hardware out of reset */
826 sky2_write16(hw, B0_CTST, CS_RST_CLR);
827 sky2_write16(hw, SK_REG(port, GMAC_LINK_CTRL), GMLC_RST_CLR);
828
829 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
830 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
831
832 /* Force to 10/100
833 * sky2_reset will re-enable on resume
834 */
835 save_mode = sky2->flow_mode;
836 ctrl = sky2->advertising;
837
838 sky2->advertising &= ~(ADVERTISED_1000baseT_Half|ADVERTISED_1000baseT_Full);
839 sky2->flow_mode = FC_NONE;
840
841 spin_lock_bh(&sky2->phy_lock);
842 sky2_phy_power_up(hw, port);
843 sky2_phy_init(hw, port);
844 spin_unlock_bh(&sky2->phy_lock);
845
846 sky2->flow_mode = save_mode;
847 sky2->advertising = ctrl;
848
849 /* Set GMAC to no flow control and auto update for speed/duplex */
850 gma_write16(hw, port, GM_GP_CTRL,
851 GM_GPCR_FC_TX_DIS|GM_GPCR_TX_ENA|GM_GPCR_RX_ENA|
852 GM_GPCR_DUP_FULL|GM_GPCR_FC_RX_DIS|GM_GPCR_AU_FCT_DIS);
853
854 /* Set WOL address */
855 memcpy_toio(hw->regs + WOL_REGS(port, WOL_MAC_ADDR),
856 sky2->netdev->dev_addr, ETH_ALEN);
857
858 /* Turn on appropriate WOL control bits */
859 sky2_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), WOL_CTL_CLEAR_RESULT);
860 ctrl = 0;
861 if (sky2->wol & WAKE_PHY)
862 ctrl |= WOL_CTL_ENA_PME_ON_LINK_CHG|WOL_CTL_ENA_LINK_CHG_UNIT;
863 else
864 ctrl |= WOL_CTL_DIS_PME_ON_LINK_CHG|WOL_CTL_DIS_LINK_CHG_UNIT;
865
866 if (sky2->wol & WAKE_MAGIC)
867 ctrl |= WOL_CTL_ENA_PME_ON_MAGIC_PKT|WOL_CTL_ENA_MAGIC_PKT_UNIT;
868 else
869 ctrl |= WOL_CTL_DIS_PME_ON_MAGIC_PKT|WOL_CTL_DIS_MAGIC_PKT_UNIT;
870
871 ctrl |= WOL_CTL_DIS_PME_ON_PATTERN|WOL_CTL_DIS_PATTERN_UNIT;
872 sky2_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), ctrl);
873
874 /* Disable PiG firmware */
875 sky2_write16(hw, B0_CTST, Y2_HW_WOL_OFF);
876
877 /* Needed by some broken BIOSes, use PCI rather than PCI-e for WOL */
878 if (legacy_pme) {
879 u32 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
880 reg1 |= PCI_Y2_PME_LEGACY;
881 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
882 }
883
884 /* block receiver */
885 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
886 sky2_read32(hw, B0_CTST);
887}
888
889static void sky2_set_tx_stfwd(struct sky2_hw *hw, unsigned port)
890{
891 struct net_device *dev = hw->dev[port];
892
893 if ( (hw->chip_id == CHIP_ID_YUKON_EX &&
894 hw->chip_rev != CHIP_REV_YU_EX_A0) ||
895 hw->chip_id >= CHIP_ID_YUKON_FE_P) {
896 /* Yukon-Extreme B0 and further Extreme devices */
897 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_ENA);
898 } else if (dev->mtu > ETH_DATA_LEN) {
899 /* set Tx GMAC FIFO Almost Empty Threshold */
900 sky2_write32(hw, SK_REG(port, TX_GMF_AE_THR),
901 (ECU_JUMBO_WM << 16) | ECU_AE_THR);
902
903 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_DIS);
904 } else
905 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_ENA);
906}
907
908static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
909{
910 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
911 u16 reg;
912 u32 rx_reg;
913 int i;
914 const u8 *addr = hw->dev[port]->dev_addr;
915
916 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
917 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
918
919 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
920
921 if (hw->chip_id == CHIP_ID_YUKON_XL &&
922 hw->chip_rev == CHIP_REV_YU_XL_A0 &&
923 port == 1) {
924 /* WA DEV_472 -- looks like crossed wires on port 2 */
925 /* clear GMAC 1 Control reset */
926 sky2_write8(hw, SK_REG(0, GMAC_CTRL), GMC_RST_CLR);
927 do {
928 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_SET);
929 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_CLR);
930 } while (gm_phy_read(hw, 1, PHY_MARV_ID0) != PHY_MARV_ID0_VAL ||
931 gm_phy_read(hw, 1, PHY_MARV_ID1) != PHY_MARV_ID1_Y2 ||
932 gm_phy_read(hw, 1, PHY_MARV_INT_MASK) != 0);
933 }
934
935 sky2_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
936
937 /* Enable Transmit FIFO Underrun */
938 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
939
940 spin_lock_bh(&sky2->phy_lock);
941 sky2_phy_power_up(hw, port);
942 sky2_phy_init(hw, port);
943 spin_unlock_bh(&sky2->phy_lock);
944
945 /* MIB clear */
946 reg = gma_read16(hw, port, GM_PHY_ADDR);
947 gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
948
949 for (i = GM_MIB_CNT_BASE; i <= GM_MIB_CNT_END; i += 4)
950 gma_read16(hw, port, i);
951 gma_write16(hw, port, GM_PHY_ADDR, reg);
952
953 /* transmit control */
954 gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
955
956 /* receive control reg: unicast + multicast + no FCS */
957 gma_write16(hw, port, GM_RX_CTRL,
958 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
959
960 /* transmit flow control */
961 gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
962
963 /* transmit parameter */
964 gma_write16(hw, port, GM_TX_PARAM,
965 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
966 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
967 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF) |
968 TX_BACK_OFF_LIM(TX_BOF_LIM_DEF));
969
970 /* serial mode register */
971 reg = DATA_BLIND_VAL(DATA_BLIND_DEF) |
972 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF_1000);
973
974 if (hw->dev[port]->mtu > ETH_DATA_LEN)
975 reg |= GM_SMOD_JUMBO_ENA;
976
977 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
978 hw->chip_rev == CHIP_REV_YU_EC_U_B1)
979 reg |= GM_NEW_FLOW_CTRL;
980
981 gma_write16(hw, port, GM_SERIAL_MODE, reg);
982
983 /* virtual address for data */
984 gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
985
986 /* physical address: used for pause frames */
987 gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
988
989 /* ignore counter overflows */
990 gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
991 gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
992 gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
993
994 /* Configure Rx MAC FIFO */
995 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
996 rx_reg = GMF_OPER_ON | GMF_RX_F_FL_ON;
997 if (hw->chip_id == CHIP_ID_YUKON_EX ||
998 hw->chip_id == CHIP_ID_YUKON_FE_P)
999 rx_reg |= GMF_RX_OVER_ON;
1000
1001 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), rx_reg);
1002
1003 if (hw->chip_id == CHIP_ID_YUKON_XL) {
1004 /* Hardware errata - clear flush mask */
1005 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), 0);
1006 } else {
1007 /* Flush Rx MAC FIFO on any flow control or error */
1008 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR);
1009 }
1010
1011 /* Set threshold to 0xa (64 bytes) + 1 to workaround pause bug */
1012 reg = RX_GMF_FL_THR_DEF + 1;
1013 /* Another magic mystery workaround from sk98lin */
1014 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
1015 hw->chip_rev == CHIP_REV_YU_FE2_A0)
1016 reg = 0x178;
1017 sky2_write16(hw, SK_REG(port, RX_GMF_FL_THR), reg);
1018
1019 /* Configure Tx MAC FIFO */
1020 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
1021 sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
1022
1023 /* On chips without ram buffer, pause is controlled by MAC level */
1024 if (!(hw->flags & SKY2_HW_RAM_BUFFER)) {
1025 /* Pause threshold is scaled by 8 in bytes */
1026 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
1027 hw->chip_rev == CHIP_REV_YU_FE2_A0)
1028 reg = 1568 / 8;
1029 else
1030 reg = 1024 / 8;
1031 sky2_write16(hw, SK_REG(port, RX_GMF_UP_THR), reg);
1032 sky2_write16(hw, SK_REG(port, RX_GMF_LP_THR), 768 / 8);
1033
1034 sky2_set_tx_stfwd(hw, port);
1035 }
1036
1037 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
1038 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
1039 /* disable dynamic watermark */
1040 reg = sky2_read16(hw, SK_REG(port, TX_GMF_EA));
1041 reg &= ~TX_DYN_WM_ENA;
1042 sky2_write16(hw, SK_REG(port, TX_GMF_EA), reg);
1043 }
1044}
1045
1046/* Assign Ram Buffer allocation to queue */
1047static void sky2_ramset(struct sky2_hw *hw, u16 q, u32 start, u32 space)
1048{
1049 u32 end;
1050
1051 /* convert from K bytes to qwords used for hw register */
1052 start *= 1024/8;
1053 space *= 1024/8;
1054 end = start + space - 1;
1055
1056 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
1057 sky2_write32(hw, RB_ADDR(q, RB_START), start);
1058 sky2_write32(hw, RB_ADDR(q, RB_END), end);
1059 sky2_write32(hw, RB_ADDR(q, RB_WP), start);
1060 sky2_write32(hw, RB_ADDR(q, RB_RP), start);
1061
1062 if (q == Q_R1 || q == Q_R2) {
1063 u32 tp = space - space/4;
1064
1065 /* On receive queue's set the thresholds
1066 * give receiver priority when > 3/4 full
1067 * send pause when down to 2K
1068 */
1069 sky2_write32(hw, RB_ADDR(q, RB_RX_UTHP), tp);
1070 sky2_write32(hw, RB_ADDR(q, RB_RX_LTHP), space/2);
1071
1072 tp = space - 8192/8;
1073 sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP), tp);
1074 sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP), space/4);
1075 } else {
1076 /* Enable store & forward on Tx queue's because
1077 * Tx FIFO is only 1K on Yukon
1078 */
1079 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
1080 }
1081
1082 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
1083 sky2_read8(hw, RB_ADDR(q, RB_CTRL));
1084}
1085
1086/* Setup Bus Memory Interface */
1087static void sky2_qset(struct sky2_hw *hw, u16 q)
1088{
1089 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_RESET);
1090 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_OPER_INIT);
1091 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_FIFO_OP_ON);
1092 sky2_write32(hw, Q_ADDR(q, Q_WM), BMU_WM_DEFAULT);
1093}
1094
1095/* Setup prefetch unit registers. This is the interface between
1096 * hardware and driver list elements
1097 */
1098static void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr,
1099 dma_addr_t addr, u32 last)
1100{
1101 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1102 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_CLR);
1103 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_HI), upper_32_bits(addr));
1104 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_LO), lower_32_bits(addr));
1105 sky2_write16(hw, Y2_QADDR(qaddr, PREF_UNIT_LAST_IDX), last);
1106 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_OP_ON);
1107
1108 sky2_read32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL));
1109}
1110
1111static inline struct sky2_tx_le *get_tx_le(struct sky2_port *sky2, u16 *slot)
1112{
1113 struct sky2_tx_le *le = sky2->tx_le + *slot;
1114
1115 *slot = RING_NEXT(*slot, sky2->tx_ring_size);
1116 le->ctrl = 0;
1117 return le;
1118}
1119
1120static void tx_init(struct sky2_port *sky2)
1121{
1122 struct sky2_tx_le *le;
1123
1124 sky2->tx_prod = sky2->tx_cons = 0;
1125 sky2->tx_tcpsum = 0;
1126 sky2->tx_last_mss = 0;
1127 netdev_reset_queue(sky2->netdev);
1128
1129 le = get_tx_le(sky2, &sky2->tx_prod);
1130 le->addr = 0;
1131 le->opcode = OP_ADDR64 | HW_OWNER;
1132 sky2->tx_last_upper = 0;
1133}
1134
1135/* Update chip's next pointer */
1136static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q, u16 idx)
1137{
1138 /* Make sure write' to descriptors are complete before we tell hardware */
1139 wmb();
1140 sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX), idx);
1141
1142 /* Synchronize I/O on since next processor may write to tail */
1143 mmiowb();
1144}
1145
1146
1147static inline struct sky2_rx_le *sky2_next_rx(struct sky2_port *sky2)
1148{
1149 struct sky2_rx_le *le = sky2->rx_le + sky2->rx_put;
1150 sky2->rx_put = RING_NEXT(sky2->rx_put, RX_LE_SIZE);
1151 le->ctrl = 0;
1152 return le;
1153}
1154
1155static unsigned sky2_get_rx_threshold(struct sky2_port *sky2)
1156{
1157 unsigned size;
1158
1159 /* Space needed for frame data + headers rounded up */
1160 size = roundup(sky2->netdev->mtu + ETH_HLEN + VLAN_HLEN, 8);
1161
1162 /* Stopping point for hardware truncation */
1163 return (size - 8) / sizeof(u32);
1164}
1165
1166static unsigned sky2_get_rx_data_size(struct sky2_port *sky2)
1167{
1168 struct rx_ring_info *re;
1169 unsigned size;
1170
1171 /* Space needed for frame data + headers rounded up */
1172 size = roundup(sky2->netdev->mtu + ETH_HLEN + VLAN_HLEN, 8);
1173
1174 sky2->rx_nfrags = size >> PAGE_SHIFT;
1175 BUG_ON(sky2->rx_nfrags > ARRAY_SIZE(re->frag_addr));
1176
1177 /* Compute residue after pages */
1178 size -= sky2->rx_nfrags << PAGE_SHIFT;
1179
1180 /* Optimize to handle small packets and headers */
1181 if (size < copybreak)
1182 size = copybreak;
1183 if (size < ETH_HLEN)
1184 size = ETH_HLEN;
1185
1186 return size;
1187}
1188
1189/* Build description to hardware for one receive segment */
1190static void sky2_rx_add(struct sky2_port *sky2, u8 op,
1191 dma_addr_t map, unsigned len)
1192{
1193 struct sky2_rx_le *le;
1194
1195 if (sizeof(dma_addr_t) > sizeof(u32)) {
1196 le = sky2_next_rx(sky2);
1197 le->addr = cpu_to_le32(upper_32_bits(map));
1198 le->opcode = OP_ADDR64 | HW_OWNER;
1199 }
1200
1201 le = sky2_next_rx(sky2);
1202 le->addr = cpu_to_le32(lower_32_bits(map));
1203 le->length = cpu_to_le16(len);
1204 le->opcode = op | HW_OWNER;
1205}
1206
1207/* Build description to hardware for one possibly fragmented skb */
1208static void sky2_rx_submit(struct sky2_port *sky2,
1209 const struct rx_ring_info *re)
1210{
1211 int i;
1212
1213 sky2_rx_add(sky2, OP_PACKET, re->data_addr, sky2->rx_data_size);
1214
1215 for (i = 0; i < skb_shinfo(re->skb)->nr_frags; i++)
1216 sky2_rx_add(sky2, OP_BUFFER, re->frag_addr[i], PAGE_SIZE);
1217}
1218
1219
1220static int sky2_rx_map_skb(struct pci_dev *pdev, struct rx_ring_info *re,
1221 unsigned size)
1222{
1223 struct sk_buff *skb = re->skb;
1224 int i;
1225
1226 re->data_addr = pci_map_single(pdev, skb->data, size, PCI_DMA_FROMDEVICE);
1227 if (pci_dma_mapping_error(pdev, re->data_addr))
1228 goto mapping_error;
1229
1230 dma_unmap_len_set(re, data_size, size);
1231
1232 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1233 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1234
1235 re->frag_addr[i] = skb_frag_dma_map(&pdev->dev, frag, 0,
1236 skb_frag_size(frag),
1237 DMA_FROM_DEVICE);
1238
1239 if (dma_mapping_error(&pdev->dev, re->frag_addr[i]))
1240 goto map_page_error;
1241 }
1242 return 0;
1243
1244map_page_error:
1245 while (--i >= 0) {
1246 pci_unmap_page(pdev, re->frag_addr[i],
1247 skb_frag_size(&skb_shinfo(skb)->frags[i]),
1248 PCI_DMA_FROMDEVICE);
1249 }
1250
1251 pci_unmap_single(pdev, re->data_addr, dma_unmap_len(re, data_size),
1252 PCI_DMA_FROMDEVICE);
1253
1254mapping_error:
1255 if (net_ratelimit())
1256 dev_warn(&pdev->dev, "%s: rx mapping error\n",
1257 skb->dev->name);
1258 return -EIO;
1259}
1260
1261static void sky2_rx_unmap_skb(struct pci_dev *pdev, struct rx_ring_info *re)
1262{
1263 struct sk_buff *skb = re->skb;
1264 int i;
1265
1266 pci_unmap_single(pdev, re->data_addr, dma_unmap_len(re, data_size),
1267 PCI_DMA_FROMDEVICE);
1268
1269 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
1270 pci_unmap_page(pdev, re->frag_addr[i],
1271 skb_frag_size(&skb_shinfo(skb)->frags[i]),
1272 PCI_DMA_FROMDEVICE);
1273}
1274
1275/* Tell chip where to start receive checksum.
1276 * Actually has two checksums, but set both same to avoid possible byte
1277 * order problems.
1278 */
1279static void rx_set_checksum(struct sky2_port *sky2)
1280{
1281 struct sky2_rx_le *le = sky2_next_rx(sky2);
1282
1283 le->addr = cpu_to_le32((ETH_HLEN << 16) | ETH_HLEN);
1284 le->ctrl = 0;
1285 le->opcode = OP_TCPSTART | HW_OWNER;
1286
1287 sky2_write32(sky2->hw,
1288 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
1289 (sky2->netdev->features & NETIF_F_RXCSUM)
1290 ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
1291}
1292
1293/* Enable/disable receive hash calculation (RSS) */
1294static void rx_set_rss(struct net_device *dev, netdev_features_t features)
1295{
1296 struct sky2_port *sky2 = netdev_priv(dev);
1297 struct sky2_hw *hw = sky2->hw;
1298 int i, nkeys = 4;
1299
1300 /* Supports IPv6 and other modes */
1301 if (hw->flags & SKY2_HW_NEW_LE) {
1302 nkeys = 10;
1303 sky2_write32(hw, SK_REG(sky2->port, RSS_CFG), HASH_ALL);
1304 }
1305
1306 /* Program RSS initial values */
1307 if (features & NETIF_F_RXHASH) {
1308 u32 rss_key[10];
1309
1310 netdev_rss_key_fill(rss_key, sizeof(rss_key));
1311 for (i = 0; i < nkeys; i++)
1312 sky2_write32(hw, SK_REG(sky2->port, RSS_KEY + i * 4),
1313 rss_key[i]);
1314
1315 /* Need to turn on (undocumented) flag to make hashing work */
1316 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T),
1317 RX_STFW_ENA);
1318
1319 sky2_write32(hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
1320 BMU_ENA_RX_RSS_HASH);
1321 } else
1322 sky2_write32(hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
1323 BMU_DIS_RX_RSS_HASH);
1324}
1325
1326/*
1327 * The RX Stop command will not work for Yukon-2 if the BMU does not
1328 * reach the end of packet and since we can't make sure that we have
1329 * incoming data, we must reset the BMU while it is not doing a DMA
1330 * transfer. Since it is possible that the RX path is still active,
1331 * the RX RAM buffer will be stopped first, so any possible incoming
1332 * data will not trigger a DMA. After the RAM buffer is stopped, the
1333 * BMU is polled until any DMA in progress is ended and only then it
1334 * will be reset.
1335 */
1336static void sky2_rx_stop(struct sky2_port *sky2)
1337{
1338 struct sky2_hw *hw = sky2->hw;
1339 unsigned rxq = rxqaddr[sky2->port];
1340 int i;
1341
1342 /* disable the RAM Buffer receive queue */
1343 sky2_write8(hw, RB_ADDR(rxq, RB_CTRL), RB_DIS_OP_MD);
1344
1345 for (i = 0; i < 0xffff; i++)
1346 if (sky2_read8(hw, RB_ADDR(rxq, Q_RSL))
1347 == sky2_read8(hw, RB_ADDR(rxq, Q_RL)))
1348 goto stopped;
1349
1350 netdev_warn(sky2->netdev, "receiver stop failed\n");
1351stopped:
1352 sky2_write32(hw, Q_ADDR(rxq, Q_CSR), BMU_RST_SET | BMU_FIFO_RST);
1353
1354 /* reset the Rx prefetch unit */
1355 sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1356 mmiowb();
1357}
1358
1359/* Clean out receive buffer area, assumes receiver hardware stopped */
1360static void sky2_rx_clean(struct sky2_port *sky2)
1361{
1362 unsigned i;
1363
1364 if (sky2->rx_le)
1365 memset(sky2->rx_le, 0, RX_LE_BYTES);
1366
1367 for (i = 0; i < sky2->rx_pending; i++) {
1368 struct rx_ring_info *re = sky2->rx_ring + i;
1369
1370 if (re->skb) {
1371 sky2_rx_unmap_skb(sky2->hw->pdev, re);
1372 kfree_skb(re->skb);
1373 re->skb = NULL;
1374 }
1375 }
1376}
1377
1378/* Basic MII support */
1379static int sky2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1380{
1381 struct mii_ioctl_data *data = if_mii(ifr);
1382 struct sky2_port *sky2 = netdev_priv(dev);
1383 struct sky2_hw *hw = sky2->hw;
1384 int err = -EOPNOTSUPP;
1385
1386 if (!netif_running(dev))
1387 return -ENODEV; /* Phy still in reset */
1388
1389 switch (cmd) {
1390 case SIOCGMIIPHY:
1391 data->phy_id = PHY_ADDR_MARV;
1392
1393 /* fallthru */
1394 case SIOCGMIIREG: {
1395 u16 val = 0;
1396
1397 spin_lock_bh(&sky2->phy_lock);
1398 err = __gm_phy_read(hw, sky2->port, data->reg_num & 0x1f, &val);
1399 spin_unlock_bh(&sky2->phy_lock);
1400
1401 data->val_out = val;
1402 break;
1403 }
1404
1405 case SIOCSMIIREG:
1406 spin_lock_bh(&sky2->phy_lock);
1407 err = gm_phy_write(hw, sky2->port, data->reg_num & 0x1f,
1408 data->val_in);
1409 spin_unlock_bh(&sky2->phy_lock);
1410 break;
1411 }
1412 return err;
1413}
1414
1415#define SKY2_VLAN_OFFLOADS (NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_TSO)
1416
1417static void sky2_vlan_mode(struct net_device *dev, netdev_features_t features)
1418{
1419 struct sky2_port *sky2 = netdev_priv(dev);
1420 struct sky2_hw *hw = sky2->hw;
1421 u16 port = sky2->port;
1422
1423 if (features & NETIF_F_HW_VLAN_CTAG_RX)
1424 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1425 RX_VLAN_STRIP_ON);
1426 else
1427 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1428 RX_VLAN_STRIP_OFF);
1429
1430 if (features & NETIF_F_HW_VLAN_CTAG_TX) {
1431 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1432 TX_VLAN_TAG_ON);
1433
1434 dev->vlan_features |= SKY2_VLAN_OFFLOADS;
1435 } else {
1436 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1437 TX_VLAN_TAG_OFF);
1438
1439 /* Can't do transmit offload of vlan without hw vlan */
1440 dev->vlan_features &= ~SKY2_VLAN_OFFLOADS;
1441 }
1442}
1443
1444/* Amount of required worst case padding in rx buffer */
1445static inline unsigned sky2_rx_pad(const struct sky2_hw *hw)
1446{
1447 return (hw->flags & SKY2_HW_RAM_BUFFER) ? 8 : 2;
1448}
1449
1450/*
1451 * Allocate an skb for receiving. If the MTU is large enough
1452 * make the skb non-linear with a fragment list of pages.
1453 */
1454static struct sk_buff *sky2_rx_alloc(struct sky2_port *sky2, gfp_t gfp)
1455{
1456 struct sk_buff *skb;
1457 int i;
1458
1459 skb = __netdev_alloc_skb(sky2->netdev,
1460 sky2->rx_data_size + sky2_rx_pad(sky2->hw),
1461 gfp);
1462 if (!skb)
1463 goto nomem;
1464
1465 if (sky2->hw->flags & SKY2_HW_RAM_BUFFER) {
1466 unsigned char *start;
1467 /*
1468 * Workaround for a bug in FIFO that cause hang
1469 * if the FIFO if the receive buffer is not 64 byte aligned.
1470 * The buffer returned from netdev_alloc_skb is
1471 * aligned except if slab debugging is enabled.
1472 */
1473 start = PTR_ALIGN(skb->data, 8);
1474 skb_reserve(skb, start - skb->data);
1475 } else
1476 skb_reserve(skb, NET_IP_ALIGN);
1477
1478 for (i = 0; i < sky2->rx_nfrags; i++) {
1479 struct page *page = alloc_page(gfp);
1480
1481 if (!page)
1482 goto free_partial;
1483 skb_fill_page_desc(skb, i, page, 0, PAGE_SIZE);
1484 }
1485
1486 return skb;
1487free_partial:
1488 kfree_skb(skb);
1489nomem:
1490 return NULL;
1491}
1492
1493static inline void sky2_rx_update(struct sky2_port *sky2, unsigned rxq)
1494{
1495 sky2_put_idx(sky2->hw, rxq, sky2->rx_put);
1496}
1497
1498static int sky2_alloc_rx_skbs(struct sky2_port *sky2)
1499{
1500 struct sky2_hw *hw = sky2->hw;
1501 unsigned i;
1502
1503 sky2->rx_data_size = sky2_get_rx_data_size(sky2);
1504
1505 /* Fill Rx ring */
1506 for (i = 0; i < sky2->rx_pending; i++) {
1507 struct rx_ring_info *re = sky2->rx_ring + i;
1508
1509 re->skb = sky2_rx_alloc(sky2, GFP_KERNEL);
1510 if (!re->skb)
1511 return -ENOMEM;
1512
1513 if (sky2_rx_map_skb(hw->pdev, re, sky2->rx_data_size)) {
1514 dev_kfree_skb(re->skb);
1515 re->skb = NULL;
1516 return -ENOMEM;
1517 }
1518 }
1519 return 0;
1520}
1521
1522/*
1523 * Setup receiver buffer pool.
1524 * Normal case this ends up creating one list element for skb
1525 * in the receive ring. Worst case if using large MTU and each
1526 * allocation falls on a different 64 bit region, that results
1527 * in 6 list elements per ring entry.
1528 * One element is used for checksum enable/disable, and one
1529 * extra to avoid wrap.
1530 */
1531static void sky2_rx_start(struct sky2_port *sky2)
1532{
1533 struct sky2_hw *hw = sky2->hw;
1534 struct rx_ring_info *re;
1535 unsigned rxq = rxqaddr[sky2->port];
1536 unsigned i, thresh;
1537
1538 sky2->rx_put = sky2->rx_next = 0;
1539 sky2_qset(hw, rxq);
1540
1541 /* On PCI express lowering the watermark gives better performance */
1542 if (pci_is_pcie(hw->pdev))
1543 sky2_write32(hw, Q_ADDR(rxq, Q_WM), BMU_WM_PEX);
1544
1545 /* These chips have no ram buffer?
1546 * MAC Rx RAM Read is controlled by hardware */
1547 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
1548 hw->chip_rev > CHIP_REV_YU_EC_U_A0)
1549 sky2_write32(hw, Q_ADDR(rxq, Q_TEST), F_M_RX_RAM_DIS);
1550
1551 sky2_prefetch_init(hw, rxq, sky2->rx_le_map, RX_LE_SIZE - 1);
1552
1553 if (!(hw->flags & SKY2_HW_NEW_LE))
1554 rx_set_checksum(sky2);
1555
1556 if (!(hw->flags & SKY2_HW_RSS_BROKEN))
1557 rx_set_rss(sky2->netdev, sky2->netdev->features);
1558
1559 /* submit Rx ring */
1560 for (i = 0; i < sky2->rx_pending; i++) {
1561 re = sky2->rx_ring + i;
1562 sky2_rx_submit(sky2, re);
1563 }
1564
1565 /*
1566 * The receiver hangs if it receives frames larger than the
1567 * packet buffer. As a workaround, truncate oversize frames, but
1568 * the register is limited to 9 bits, so if you do frames > 2052
1569 * you better get the MTU right!
1570 */
1571 thresh = sky2_get_rx_threshold(sky2);
1572 if (thresh > 0x1ff)
1573 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_OFF);
1574 else {
1575 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_TR_THR), thresh);
1576 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_ON);
1577 }
1578
1579 /* Tell chip about available buffers */
1580 sky2_rx_update(sky2, rxq);
1581
1582 if (hw->chip_id == CHIP_ID_YUKON_EX ||
1583 hw->chip_id == CHIP_ID_YUKON_SUPR) {
1584 /*
1585 * Disable flushing of non ASF packets;
1586 * must be done after initializing the BMUs;
1587 * drivers without ASF support should do this too, otherwise
1588 * it may happen that they cannot run on ASF devices;
1589 * remember that the MAC FIFO isn't reset during initialization.
1590 */
1591 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_MACSEC_FLUSH_OFF);
1592 }
1593
1594 if (hw->chip_id >= CHIP_ID_YUKON_SUPR) {
1595 /* Enable RX Home Address & Routing Header checksum fix */
1596 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_FL_CTRL),
1597 RX_IPV6_SA_MOB_ENA | RX_IPV6_DA_MOB_ENA);
1598
1599 /* Enable TX Home Address & Routing Header checksum fix */
1600 sky2_write32(hw, Q_ADDR(txqaddr[sky2->port], Q_TEST),
1601 TBMU_TEST_HOME_ADD_FIX_EN | TBMU_TEST_ROUTING_ADD_FIX_EN);
1602 }
1603}
1604
1605static int sky2_alloc_buffers(struct sky2_port *sky2)
1606{
1607 struct sky2_hw *hw = sky2->hw;
1608
1609 /* must be power of 2 */
1610 sky2->tx_le = pci_alloc_consistent(hw->pdev,
1611 sky2->tx_ring_size *
1612 sizeof(struct sky2_tx_le),
1613 &sky2->tx_le_map);
1614 if (!sky2->tx_le)
1615 goto nomem;
1616
1617 sky2->tx_ring = kcalloc(sky2->tx_ring_size, sizeof(struct tx_ring_info),
1618 GFP_KERNEL);
1619 if (!sky2->tx_ring)
1620 goto nomem;
1621
1622 sky2->rx_le = pci_zalloc_consistent(hw->pdev, RX_LE_BYTES,
1623 &sky2->rx_le_map);
1624 if (!sky2->rx_le)
1625 goto nomem;
1626
1627 sky2->rx_ring = kcalloc(sky2->rx_pending, sizeof(struct rx_ring_info),
1628 GFP_KERNEL);
1629 if (!sky2->rx_ring)
1630 goto nomem;
1631
1632 return sky2_alloc_rx_skbs(sky2);
1633nomem:
1634 return -ENOMEM;
1635}
1636
1637static void sky2_free_buffers(struct sky2_port *sky2)
1638{
1639 struct sky2_hw *hw = sky2->hw;
1640
1641 sky2_rx_clean(sky2);
1642
1643 if (sky2->rx_le) {
1644 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1645 sky2->rx_le, sky2->rx_le_map);
1646 sky2->rx_le = NULL;
1647 }
1648 if (sky2->tx_le) {
1649 pci_free_consistent(hw->pdev,
1650 sky2->tx_ring_size * sizeof(struct sky2_tx_le),
1651 sky2->tx_le, sky2->tx_le_map);
1652 sky2->tx_le = NULL;
1653 }
1654 kfree(sky2->tx_ring);
1655 kfree(sky2->rx_ring);
1656
1657 sky2->tx_ring = NULL;
1658 sky2->rx_ring = NULL;
1659}
1660
1661static void sky2_hw_up(struct sky2_port *sky2)
1662{
1663 struct sky2_hw *hw = sky2->hw;
1664 unsigned port = sky2->port;
1665 u32 ramsize;
1666 int cap;
1667 struct net_device *otherdev = hw->dev[sky2->port^1];
1668
1669 tx_init(sky2);
1670
1671 /*
1672 * On dual port PCI-X card, there is an problem where status
1673 * can be received out of order due to split transactions
1674 */
1675 if (otherdev && netif_running(otherdev) &&
1676 (cap = pci_find_capability(hw->pdev, PCI_CAP_ID_PCIX))) {
1677 u16 cmd;
1678
1679 cmd = sky2_pci_read16(hw, cap + PCI_X_CMD);
1680 cmd &= ~PCI_X_CMD_MAX_SPLIT;
1681 sky2_pci_write16(hw, cap + PCI_X_CMD, cmd);
1682 }
1683
1684 sky2_mac_init(hw, port);
1685
1686 /* Register is number of 4K blocks on internal RAM buffer. */
1687 ramsize = sky2_read8(hw, B2_E_0) * 4;
1688 if (ramsize > 0) {
1689 u32 rxspace;
1690
1691 netdev_dbg(sky2->netdev, "ram buffer %dK\n", ramsize);
1692 if (ramsize < 16)
1693 rxspace = ramsize / 2;
1694 else
1695 rxspace = 8 + (2*(ramsize - 16))/3;
1696
1697 sky2_ramset(hw, rxqaddr[port], 0, rxspace);
1698 sky2_ramset(hw, txqaddr[port], rxspace, ramsize - rxspace);
1699
1700 /* Make sure SyncQ is disabled */
1701 sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL),
1702 RB_RST_SET);
1703 }
1704
1705 sky2_qset(hw, txqaddr[port]);
1706
1707 /* This is copied from sk98lin 10.0.5.3; no one tells me about erratta's */
1708 if (hw->chip_id == CHIP_ID_YUKON_EX && hw->chip_rev == CHIP_REV_YU_EX_B0)
1709 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_TEST), F_TX_CHK_AUTO_OFF);
1710
1711 /* Set almost empty threshold */
1712 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
1713 hw->chip_rev == CHIP_REV_YU_EC_U_A0)
1714 sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), ECU_TXFF_LEV);
1715
1716 sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
1717 sky2->tx_ring_size - 1);
1718
1719 sky2_vlan_mode(sky2->netdev, sky2->netdev->features);
1720 netdev_update_features(sky2->netdev);
1721
1722 sky2_rx_start(sky2);
1723}
1724
1725/* Setup device IRQ and enable napi to process */
1726static int sky2_setup_irq(struct sky2_hw *hw, const char *name)
1727{
1728 struct pci_dev *pdev = hw->pdev;
1729 int err;
1730
1731 err = request_irq(pdev->irq, sky2_intr,
1732 (hw->flags & SKY2_HW_USE_MSI) ? 0 : IRQF_SHARED,
1733 name, hw);
1734 if (err)
1735 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
1736 else {
1737 hw->flags |= SKY2_HW_IRQ_SETUP;
1738
1739 napi_enable(&hw->napi);
1740 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
1741 sky2_read32(hw, B0_IMSK);
1742 }
1743
1744 return err;
1745}
1746
1747
1748/* Bring up network interface. */
1749static int sky2_open(struct net_device *dev)
1750{
1751 struct sky2_port *sky2 = netdev_priv(dev);
1752 struct sky2_hw *hw = sky2->hw;
1753 unsigned port = sky2->port;
1754 u32 imask;
1755 int err;
1756
1757 netif_carrier_off(dev);
1758
1759 err = sky2_alloc_buffers(sky2);
1760 if (err)
1761 goto err_out;
1762
1763 /* With single port, IRQ is setup when device is brought up */
1764 if (hw->ports == 1 && (err = sky2_setup_irq(hw, dev->name)))
1765 goto err_out;
1766
1767 sky2_hw_up(sky2);
1768
1769 /* Enable interrupts from phy/mac for port */
1770 imask = sky2_read32(hw, B0_IMSK);
1771
1772 if (hw->chip_id == CHIP_ID_YUKON_OPT ||
1773 hw->chip_id == CHIP_ID_YUKON_PRM ||
1774 hw->chip_id == CHIP_ID_YUKON_OP_2)
1775 imask |= Y2_IS_PHY_QLNK; /* enable PHY Quick Link */
1776
1777 imask |= portirq_msk[port];
1778 sky2_write32(hw, B0_IMSK, imask);
1779 sky2_read32(hw, B0_IMSK);
1780
1781 netif_info(sky2, ifup, dev, "enabling interface\n");
1782
1783 return 0;
1784
1785err_out:
1786 sky2_free_buffers(sky2);
1787 return err;
1788}
1789
1790/* Modular subtraction in ring */
1791static inline int tx_inuse(const struct sky2_port *sky2)
1792{
1793 return (sky2->tx_prod - sky2->tx_cons) & (sky2->tx_ring_size - 1);
1794}
1795
1796/* Number of list elements available for next tx */
1797static inline int tx_avail(const struct sky2_port *sky2)
1798{
1799 return sky2->tx_pending - tx_inuse(sky2);
1800}
1801
1802/* Estimate of number of transmit list elements required */
1803static unsigned tx_le_req(const struct sk_buff *skb)
1804{
1805 unsigned count;
1806
1807 count = (skb_shinfo(skb)->nr_frags + 1)
1808 * (sizeof(dma_addr_t) / sizeof(u32));
1809
1810 if (skb_is_gso(skb))
1811 ++count;
1812 else if (sizeof(dma_addr_t) == sizeof(u32))
1813 ++count; /* possible vlan */
1814
1815 if (skb->ip_summed == CHECKSUM_PARTIAL)
1816 ++count;
1817
1818 return count;
1819}
1820
1821static void sky2_tx_unmap(struct pci_dev *pdev, struct tx_ring_info *re)
1822{
1823 if (re->flags & TX_MAP_SINGLE)
1824 pci_unmap_single(pdev, dma_unmap_addr(re, mapaddr),
1825 dma_unmap_len(re, maplen),
1826 PCI_DMA_TODEVICE);
1827 else if (re->flags & TX_MAP_PAGE)
1828 pci_unmap_page(pdev, dma_unmap_addr(re, mapaddr),
1829 dma_unmap_len(re, maplen),
1830 PCI_DMA_TODEVICE);
1831 re->flags = 0;
1832}
1833
1834/*
1835 * Put one packet in ring for transmit.
1836 * A single packet can generate multiple list elements, and
1837 * the number of ring elements will probably be less than the number
1838 * of list elements used.
1839 */
1840static netdev_tx_t sky2_xmit_frame(struct sk_buff *skb,
1841 struct net_device *dev)
1842{
1843 struct sky2_port *sky2 = netdev_priv(dev);
1844 struct sky2_hw *hw = sky2->hw;
1845 struct sky2_tx_le *le = NULL;
1846 struct tx_ring_info *re;
1847 unsigned i, len;
1848 dma_addr_t mapping;
1849 u32 upper;
1850 u16 slot;
1851 u16 mss;
1852 u8 ctrl;
1853
1854 if (unlikely(tx_avail(sky2) < tx_le_req(skb)))
1855 return NETDEV_TX_BUSY;
1856
1857 len = skb_headlen(skb);
1858 mapping = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
1859
1860 if (pci_dma_mapping_error(hw->pdev, mapping))
1861 goto mapping_error;
1862
1863 slot = sky2->tx_prod;
1864 netif_printk(sky2, tx_queued, KERN_DEBUG, dev,
1865 "tx queued, slot %u, len %d\n", slot, skb->len);
1866
1867 /* Send high bits if needed */
1868 upper = upper_32_bits(mapping);
1869 if (upper != sky2->tx_last_upper) {
1870 le = get_tx_le(sky2, &slot);
1871 le->addr = cpu_to_le32(upper);
1872 sky2->tx_last_upper = upper;
1873 le->opcode = OP_ADDR64 | HW_OWNER;
1874 }
1875
1876 /* Check for TCP Segmentation Offload */
1877 mss = skb_shinfo(skb)->gso_size;
1878 if (mss != 0) {
1879
1880 if (!(hw->flags & SKY2_HW_NEW_LE))
1881 mss += ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1882
1883 if (mss != sky2->tx_last_mss) {
1884 le = get_tx_le(sky2, &slot);
1885 le->addr = cpu_to_le32(mss);
1886
1887 if (hw->flags & SKY2_HW_NEW_LE)
1888 le->opcode = OP_MSS | HW_OWNER;
1889 else
1890 le->opcode = OP_LRGLEN | HW_OWNER;
1891 sky2->tx_last_mss = mss;
1892 }
1893 }
1894
1895 ctrl = 0;
1896
1897 /* Add VLAN tag, can piggyback on LRGLEN or ADDR64 */
1898 if (skb_vlan_tag_present(skb)) {
1899 if (!le) {
1900 le = get_tx_le(sky2, &slot);
1901 le->addr = 0;
1902 le->opcode = OP_VLAN|HW_OWNER;
1903 } else
1904 le->opcode |= OP_VLAN;
1905 le->length = cpu_to_be16(skb_vlan_tag_get(skb));
1906 ctrl |= INS_VLAN;
1907 }
1908
1909 /* Handle TCP checksum offload */
1910 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1911 /* On Yukon EX (some versions) encoding change. */
1912 if (hw->flags & SKY2_HW_AUTO_TX_SUM)
1913 ctrl |= CALSUM; /* auto checksum */
1914 else {
1915 const unsigned offset = skb_transport_offset(skb);
1916 u32 tcpsum;
1917
1918 tcpsum = offset << 16; /* sum start */
1919 tcpsum |= offset + skb->csum_offset; /* sum write */
1920
1921 ctrl |= CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
1922 if (ip_hdr(skb)->protocol == IPPROTO_UDP)
1923 ctrl |= UDPTCP;
1924
1925 if (tcpsum != sky2->tx_tcpsum) {
1926 sky2->tx_tcpsum = tcpsum;
1927
1928 le = get_tx_le(sky2, &slot);
1929 le->addr = cpu_to_le32(tcpsum);
1930 le->length = 0; /* initial checksum value */
1931 le->ctrl = 1; /* one packet */
1932 le->opcode = OP_TCPLISW | HW_OWNER;
1933 }
1934 }
1935 }
1936
1937 re = sky2->tx_ring + slot;
1938 re->flags = TX_MAP_SINGLE;
1939 dma_unmap_addr_set(re, mapaddr, mapping);
1940 dma_unmap_len_set(re, maplen, len);
1941
1942 le = get_tx_le(sky2, &slot);
1943 le->addr = cpu_to_le32(lower_32_bits(mapping));
1944 le->length = cpu_to_le16(len);
1945 le->ctrl = ctrl;
1946 le->opcode = mss ? (OP_LARGESEND | HW_OWNER) : (OP_PACKET | HW_OWNER);
1947
1948
1949 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1950 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1951
1952 mapping = skb_frag_dma_map(&hw->pdev->dev, frag, 0,
1953 skb_frag_size(frag), DMA_TO_DEVICE);
1954
1955 if (dma_mapping_error(&hw->pdev->dev, mapping))
1956 goto mapping_unwind;
1957
1958 upper = upper_32_bits(mapping);
1959 if (upper != sky2->tx_last_upper) {
1960 le = get_tx_le(sky2, &slot);
1961 le->addr = cpu_to_le32(upper);
1962 sky2->tx_last_upper = upper;
1963 le->opcode = OP_ADDR64 | HW_OWNER;
1964 }
1965
1966 re = sky2->tx_ring + slot;
1967 re->flags = TX_MAP_PAGE;
1968 dma_unmap_addr_set(re, mapaddr, mapping);
1969 dma_unmap_len_set(re, maplen, skb_frag_size(frag));
1970
1971 le = get_tx_le(sky2, &slot);
1972 le->addr = cpu_to_le32(lower_32_bits(mapping));
1973 le->length = cpu_to_le16(skb_frag_size(frag));
1974 le->ctrl = ctrl;
1975 le->opcode = OP_BUFFER | HW_OWNER;
1976 }
1977
1978 re->skb = skb;
1979 le->ctrl |= EOP;
1980
1981 sky2->tx_prod = slot;
1982
1983 if (tx_avail(sky2) <= MAX_SKB_TX_LE)
1984 netif_stop_queue(dev);
1985
1986 netdev_sent_queue(dev, skb->len);
1987 sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod);
1988
1989 return NETDEV_TX_OK;
1990
1991mapping_unwind:
1992 for (i = sky2->tx_prod; i != slot; i = RING_NEXT(i, sky2->tx_ring_size)) {
1993 re = sky2->tx_ring + i;
1994
1995 sky2_tx_unmap(hw->pdev, re);
1996 }
1997
1998mapping_error:
1999 if (net_ratelimit())
2000 dev_warn(&hw->pdev->dev, "%s: tx mapping error\n", dev->name);
2001 dev_kfree_skb_any(skb);
2002 return NETDEV_TX_OK;
2003}
2004
2005/*
2006 * Free ring elements from starting at tx_cons until "done"
2007 *
2008 * NB:
2009 * 1. The hardware will tell us about partial completion of multi-part
2010 * buffers so make sure not to free skb to early.
2011 * 2. This may run in parallel start_xmit because the it only
2012 * looks at the tail of the queue of FIFO (tx_cons), not
2013 * the head (tx_prod)
2014 */
2015static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
2016{
2017 struct net_device *dev = sky2->netdev;
2018 u16 idx;
2019 unsigned int bytes_compl = 0, pkts_compl = 0;
2020
2021 BUG_ON(done >= sky2->tx_ring_size);
2022
2023 for (idx = sky2->tx_cons; idx != done;
2024 idx = RING_NEXT(idx, sky2->tx_ring_size)) {
2025 struct tx_ring_info *re = sky2->tx_ring + idx;
2026 struct sk_buff *skb = re->skb;
2027
2028 sky2_tx_unmap(sky2->hw->pdev, re);
2029
2030 if (skb) {
2031 netif_printk(sky2, tx_done, KERN_DEBUG, dev,
2032 "tx done %u\n", idx);
2033
2034 pkts_compl++;
2035 bytes_compl += skb->len;
2036
2037 re->skb = NULL;
2038 dev_kfree_skb_any(skb);
2039
2040 sky2->tx_next = RING_NEXT(idx, sky2->tx_ring_size);
2041 }
2042 }
2043
2044 sky2->tx_cons = idx;
2045 smp_mb();
2046
2047 netdev_completed_queue(dev, pkts_compl, bytes_compl);
2048
2049 u64_stats_update_begin(&sky2->tx_stats.syncp);
2050 sky2->tx_stats.packets += pkts_compl;
2051 sky2->tx_stats.bytes += bytes_compl;
2052 u64_stats_update_end(&sky2->tx_stats.syncp);
2053}
2054
2055static void sky2_tx_reset(struct sky2_hw *hw, unsigned port)
2056{
2057 /* Disable Force Sync bit and Enable Alloc bit */
2058 sky2_write8(hw, SK_REG(port, TXA_CTRL),
2059 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
2060
2061 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
2062 sky2_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
2063 sky2_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
2064
2065 /* Reset the PCI FIFO of the async Tx queue */
2066 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR),
2067 BMU_RST_SET | BMU_FIFO_RST);
2068
2069 /* Reset the Tx prefetch units */
2070 sky2_write32(hw, Y2_QADDR(txqaddr[port], PREF_UNIT_CTRL),
2071 PREF_UNIT_RST_SET);
2072
2073 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
2074 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
2075
2076 sky2_read32(hw, B0_CTST);
2077}
2078
2079static void sky2_hw_down(struct sky2_port *sky2)
2080{
2081 struct sky2_hw *hw = sky2->hw;
2082 unsigned port = sky2->port;
2083 u16 ctrl;
2084
2085 /* Force flow control off */
2086 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
2087
2088 /* Stop transmitter */
2089 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_STOP);
2090 sky2_read32(hw, Q_ADDR(txqaddr[port], Q_CSR));
2091
2092 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
2093 RB_RST_SET | RB_DIS_OP_MD);
2094
2095 ctrl = gma_read16(hw, port, GM_GP_CTRL);
2096 ctrl &= ~(GM_GPCR_TX_ENA | GM_GPCR_RX_ENA);
2097 gma_write16(hw, port, GM_GP_CTRL, ctrl);
2098
2099 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
2100
2101 /* Workaround shared GMAC reset */
2102 if (!(hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 &&
2103 port == 0 && hw->dev[1] && netif_running(hw->dev[1])))
2104 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
2105
2106 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
2107
2108 /* Force any delayed status interrupt and NAPI */
2109 sky2_write32(hw, STAT_LEV_TIMER_CNT, 0);
2110 sky2_write32(hw, STAT_TX_TIMER_CNT, 0);
2111 sky2_write32(hw, STAT_ISR_TIMER_CNT, 0);
2112 sky2_read8(hw, STAT_ISR_TIMER_CTRL);
2113
2114 sky2_rx_stop(sky2);
2115
2116 spin_lock_bh(&sky2->phy_lock);
2117 sky2_phy_power_down(hw, port);
2118 spin_unlock_bh(&sky2->phy_lock);
2119
2120 sky2_tx_reset(hw, port);
2121
2122 /* Free any pending frames stuck in HW queue */
2123 sky2_tx_complete(sky2, sky2->tx_prod);
2124}
2125
2126/* Network shutdown */
2127static int sky2_close(struct net_device *dev)
2128{
2129 struct sky2_port *sky2 = netdev_priv(dev);
2130 struct sky2_hw *hw = sky2->hw;
2131
2132 /* Never really got started! */
2133 if (!sky2->tx_le)
2134 return 0;
2135
2136 netif_info(sky2, ifdown, dev, "disabling interface\n");
2137
2138 if (hw->ports == 1) {
2139 sky2_write32(hw, B0_IMSK, 0);
2140 sky2_read32(hw, B0_IMSK);
2141
2142 napi_disable(&hw->napi);
2143 free_irq(hw->pdev->irq, hw);
2144 hw->flags &= ~SKY2_HW_IRQ_SETUP;
2145 } else {
2146 u32 imask;
2147
2148 /* Disable port IRQ */
2149 imask = sky2_read32(hw, B0_IMSK);
2150 imask &= ~portirq_msk[sky2->port];
2151 sky2_write32(hw, B0_IMSK, imask);
2152 sky2_read32(hw, B0_IMSK);
2153
2154 synchronize_irq(hw->pdev->irq);
2155 napi_synchronize(&hw->napi);
2156 }
2157
2158 sky2_hw_down(sky2);
2159
2160 sky2_free_buffers(sky2);
2161
2162 return 0;
2163}
2164
2165static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux)
2166{
2167 if (hw->flags & SKY2_HW_FIBRE_PHY)
2168 return SPEED_1000;
2169
2170 if (!(hw->flags & SKY2_HW_GIGABIT)) {
2171 if (aux & PHY_M_PS_SPEED_100)
2172 return SPEED_100;
2173 else
2174 return SPEED_10;
2175 }
2176
2177 switch (aux & PHY_M_PS_SPEED_MSK) {
2178 case PHY_M_PS_SPEED_1000:
2179 return SPEED_1000;
2180 case PHY_M_PS_SPEED_100:
2181 return SPEED_100;
2182 default:
2183 return SPEED_10;
2184 }
2185}
2186
2187static void sky2_link_up(struct sky2_port *sky2)
2188{
2189 struct sky2_hw *hw = sky2->hw;
2190 unsigned port = sky2->port;
2191 static const char *fc_name[] = {
2192 [FC_NONE] = "none",
2193 [FC_TX] = "tx",
2194 [FC_RX] = "rx",
2195 [FC_BOTH] = "both",
2196 };
2197
2198 sky2_set_ipg(sky2);
2199
2200 sky2_enable_rx_tx(sky2);
2201
2202 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
2203
2204 netif_carrier_on(sky2->netdev);
2205
2206 mod_timer(&hw->watchdog_timer, jiffies + 1);
2207
2208 /* Turn on link LED */
2209 sky2_write8(hw, SK_REG(port, LNK_LED_REG),
2210 LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF);
2211
2212 netif_info(sky2, link, sky2->netdev,
2213 "Link is up at %d Mbps, %s duplex, flow control %s\n",
2214 sky2->speed,
2215 sky2->duplex == DUPLEX_FULL ? "full" : "half",
2216 fc_name[sky2->flow_status]);
2217}
2218
2219static void sky2_link_down(struct sky2_port *sky2)
2220{
2221 struct sky2_hw *hw = sky2->hw;
2222 unsigned port = sky2->port;
2223 u16 reg;
2224
2225 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
2226
2227 reg = gma_read16(hw, port, GM_GP_CTRL);
2228 reg &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
2229 gma_write16(hw, port, GM_GP_CTRL, reg);
2230
2231 netif_carrier_off(sky2->netdev);
2232
2233 /* Turn off link LED */
2234 sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
2235
2236 netif_info(sky2, link, sky2->netdev, "Link is down\n");
2237
2238 sky2_phy_init(hw, port);
2239}
2240
2241static enum flow_control sky2_flow(int rx, int tx)
2242{
2243 if (rx)
2244 return tx ? FC_BOTH : FC_RX;
2245 else
2246 return tx ? FC_TX : FC_NONE;
2247}
2248
2249static int sky2_autoneg_done(struct sky2_port *sky2, u16 aux)
2250{
2251 struct sky2_hw *hw = sky2->hw;
2252 unsigned port = sky2->port;
2253 u16 advert, lpa;
2254
2255 advert = gm_phy_read(hw, port, PHY_MARV_AUNE_ADV);
2256 lpa = gm_phy_read(hw, port, PHY_MARV_AUNE_LP);
2257 if (lpa & PHY_M_AN_RF) {
2258 netdev_err(sky2->netdev, "remote fault\n");
2259 return -1;
2260 }
2261
2262 if (!(aux & PHY_M_PS_SPDUP_RES)) {
2263 netdev_err(sky2->netdev, "speed/duplex mismatch\n");
2264 return -1;
2265 }
2266
2267 sky2->speed = sky2_phy_speed(hw, aux);
2268 sky2->duplex = (aux & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
2269
2270 /* Since the pause result bits seem to in different positions on
2271 * different chips. look at registers.
2272 */
2273 if (hw->flags & SKY2_HW_FIBRE_PHY) {
2274 /* Shift for bits in fiber PHY */
2275 advert &= ~(ADVERTISE_PAUSE_CAP|ADVERTISE_PAUSE_ASYM);
2276 lpa &= ~(LPA_PAUSE_CAP|LPA_PAUSE_ASYM);
2277
2278 if (advert & ADVERTISE_1000XPAUSE)
2279 advert |= ADVERTISE_PAUSE_CAP;
2280 if (advert & ADVERTISE_1000XPSE_ASYM)
2281 advert |= ADVERTISE_PAUSE_ASYM;
2282 if (lpa & LPA_1000XPAUSE)
2283 lpa |= LPA_PAUSE_CAP;
2284 if (lpa & LPA_1000XPAUSE_ASYM)
2285 lpa |= LPA_PAUSE_ASYM;
2286 }
2287
2288 sky2->flow_status = FC_NONE;
2289 if (advert & ADVERTISE_PAUSE_CAP) {
2290 if (lpa & LPA_PAUSE_CAP)
2291 sky2->flow_status = FC_BOTH;
2292 else if (advert & ADVERTISE_PAUSE_ASYM)
2293 sky2->flow_status = FC_RX;
2294 } else if (advert & ADVERTISE_PAUSE_ASYM) {
2295 if ((lpa & LPA_PAUSE_CAP) && (lpa & LPA_PAUSE_ASYM))
2296 sky2->flow_status = FC_TX;
2297 }
2298
2299 if (sky2->duplex == DUPLEX_HALF && sky2->speed < SPEED_1000 &&
2300 !(hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_EX))
2301 sky2->flow_status = FC_NONE;
2302
2303 if (sky2->flow_status & FC_TX)
2304 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
2305 else
2306 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
2307
2308 return 0;
2309}
2310
2311/* Interrupt from PHY */
2312static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
2313{
2314 struct net_device *dev = hw->dev[port];
2315 struct sky2_port *sky2 = netdev_priv(dev);
2316 u16 istatus, phystat;
2317
2318 if (!netif_running(dev))
2319 return;
2320
2321 spin_lock(&sky2->phy_lock);
2322 istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
2323 phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
2324
2325 netif_info(sky2, intr, sky2->netdev, "phy interrupt status 0x%x 0x%x\n",
2326 istatus, phystat);
2327
2328 if (istatus & PHY_M_IS_AN_COMPL) {
2329 if (sky2_autoneg_done(sky2, phystat) == 0 &&
2330 !netif_carrier_ok(dev))
2331 sky2_link_up(sky2);
2332 goto out;
2333 }
2334
2335 if (istatus & PHY_M_IS_LSP_CHANGE)
2336 sky2->speed = sky2_phy_speed(hw, phystat);
2337
2338 if (istatus & PHY_M_IS_DUP_CHANGE)
2339 sky2->duplex =
2340 (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
2341
2342 if (istatus & PHY_M_IS_LST_CHANGE) {
2343 if (phystat & PHY_M_PS_LINK_UP)
2344 sky2_link_up(sky2);
2345 else
2346 sky2_link_down(sky2);
2347 }
2348out:
2349 spin_unlock(&sky2->phy_lock);
2350}
2351
2352/* Special quick link interrupt (Yukon-2 Optima only) */
2353static void sky2_qlink_intr(struct sky2_hw *hw)
2354{
2355 struct sky2_port *sky2 = netdev_priv(hw->dev[0]);
2356 u32 imask;
2357 u16 phy;
2358
2359 /* disable irq */
2360 imask = sky2_read32(hw, B0_IMSK);
2361 imask &= ~Y2_IS_PHY_QLNK;
2362 sky2_write32(hw, B0_IMSK, imask);
2363
2364 /* reset PHY Link Detect */
2365 phy = sky2_pci_read16(hw, PSM_CONFIG_REG4);
2366 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2367 sky2_pci_write16(hw, PSM_CONFIG_REG4, phy | 1);
2368 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2369
2370 sky2_link_up(sky2);
2371}
2372
2373/* Transmit timeout is only called if we are running, carrier is up
2374 * and tx queue is full (stopped).
2375 */
2376static void sky2_tx_timeout(struct net_device *dev)
2377{
2378 struct sky2_port *sky2 = netdev_priv(dev);
2379 struct sky2_hw *hw = sky2->hw;
2380
2381 netif_err(sky2, timer, dev, "tx timeout\n");
2382
2383 netdev_printk(KERN_DEBUG, dev, "transmit ring %u .. %u report=%u done=%u\n",
2384 sky2->tx_cons, sky2->tx_prod,
2385 sky2_read16(hw, sky2->port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
2386 sky2_read16(hw, Q_ADDR(txqaddr[sky2->port], Q_DONE)));
2387
2388 /* can't restart safely under softirq */
2389 schedule_work(&hw->restart_work);
2390}
2391
2392static int sky2_change_mtu(struct net_device *dev, int new_mtu)
2393{
2394 struct sky2_port *sky2 = netdev_priv(dev);
2395 struct sky2_hw *hw = sky2->hw;
2396 unsigned port = sky2->port;
2397 int err;
2398 u16 ctl, mode;
2399 u32 imask;
2400
2401 if (!netif_running(dev)) {
2402 dev->mtu = new_mtu;
2403 netdev_update_features(dev);
2404 return 0;
2405 }
2406
2407 imask = sky2_read32(hw, B0_IMSK);
2408 sky2_write32(hw, B0_IMSK, 0);
2409 sky2_read32(hw, B0_IMSK);
2410
2411 netif_trans_update(dev); /* prevent tx timeout */
2412 napi_disable(&hw->napi);
2413 netif_tx_disable(dev);
2414
2415 synchronize_irq(hw->pdev->irq);
2416
2417 if (!(hw->flags & SKY2_HW_RAM_BUFFER))
2418 sky2_set_tx_stfwd(hw, port);
2419
2420 ctl = gma_read16(hw, port, GM_GP_CTRL);
2421 gma_write16(hw, port, GM_GP_CTRL, ctl & ~GM_GPCR_RX_ENA);
2422 sky2_rx_stop(sky2);
2423 sky2_rx_clean(sky2);
2424
2425 dev->mtu = new_mtu;
2426 netdev_update_features(dev);
2427
2428 mode = DATA_BLIND_VAL(DATA_BLIND_DEF) | GM_SMOD_VLAN_ENA;
2429 if (sky2->speed > SPEED_100)
2430 mode |= IPG_DATA_VAL(IPG_DATA_DEF_1000);
2431 else
2432 mode |= IPG_DATA_VAL(IPG_DATA_DEF_10_100);
2433
2434 if (dev->mtu > ETH_DATA_LEN)
2435 mode |= GM_SMOD_JUMBO_ENA;
2436
2437 gma_write16(hw, port, GM_SERIAL_MODE, mode);
2438
2439 sky2_write8(hw, RB_ADDR(rxqaddr[port], RB_CTRL), RB_ENA_OP_MD);
2440
2441 err = sky2_alloc_rx_skbs(sky2);
2442 if (!err)
2443 sky2_rx_start(sky2);
2444 else
2445 sky2_rx_clean(sky2);
2446 sky2_write32(hw, B0_IMSK, imask);
2447
2448 sky2_read32(hw, B0_Y2_SP_LISR);
2449 napi_enable(&hw->napi);
2450
2451 if (err)
2452 dev_close(dev);
2453 else {
2454 gma_write16(hw, port, GM_GP_CTRL, ctl);
2455
2456 netif_wake_queue(dev);
2457 }
2458
2459 return err;
2460}
2461
2462static inline bool needs_copy(const struct rx_ring_info *re,
2463 unsigned length)
2464{
2465#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
2466 /* Some architectures need the IP header to be aligned */
2467 if (!IS_ALIGNED(re->data_addr + ETH_HLEN, sizeof(u32)))
2468 return true;
2469#endif
2470 return length < copybreak;
2471}
2472
2473/* For small just reuse existing skb for next receive */
2474static struct sk_buff *receive_copy(struct sky2_port *sky2,
2475 const struct rx_ring_info *re,
2476 unsigned length)
2477{
2478 struct sk_buff *skb;
2479
2480 skb = netdev_alloc_skb_ip_align(sky2->netdev, length);
2481 if (likely(skb)) {
2482 pci_dma_sync_single_for_cpu(sky2->hw->pdev, re->data_addr,
2483 length, PCI_DMA_FROMDEVICE);
2484 skb_copy_from_linear_data(re->skb, skb->data, length);
2485 skb->ip_summed = re->skb->ip_summed;
2486 skb->csum = re->skb->csum;
2487 skb_copy_hash(skb, re->skb);
2488 skb->vlan_proto = re->skb->vlan_proto;
2489 skb->vlan_tci = re->skb->vlan_tci;
2490
2491 pci_dma_sync_single_for_device(sky2->hw->pdev, re->data_addr,
2492 length, PCI_DMA_FROMDEVICE);
2493 re->skb->vlan_proto = 0;
2494 re->skb->vlan_tci = 0;
2495 skb_clear_hash(re->skb);
2496 re->skb->ip_summed = CHECKSUM_NONE;
2497 skb_put(skb, length);
2498 }
2499 return skb;
2500}
2501
2502/* Adjust length of skb with fragments to match received data */
2503static void skb_put_frags(struct sk_buff *skb, unsigned int hdr_space,
2504 unsigned int length)
2505{
2506 int i, num_frags;
2507 unsigned int size;
2508
2509 /* put header into skb */
2510 size = min(length, hdr_space);
2511 skb->tail += size;
2512 skb->len += size;
2513 length -= size;
2514
2515 num_frags = skb_shinfo(skb)->nr_frags;
2516 for (i = 0; i < num_frags; i++) {
2517 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2518
2519 if (length == 0) {
2520 /* don't need this page */
2521 __skb_frag_unref(frag);
2522 --skb_shinfo(skb)->nr_frags;
2523 } else {
2524 size = min(length, (unsigned) PAGE_SIZE);
2525
2526 skb_frag_size_set(frag, size);
2527 skb->data_len += size;
2528 skb->truesize += PAGE_SIZE;
2529 skb->len += size;
2530 length -= size;
2531 }
2532 }
2533}
2534
2535/* Normal packet - take skb from ring element and put in a new one */
2536static struct sk_buff *receive_new(struct sky2_port *sky2,
2537 struct rx_ring_info *re,
2538 unsigned int length)
2539{
2540 struct sk_buff *skb;
2541 struct rx_ring_info nre;
2542 unsigned hdr_space = sky2->rx_data_size;
2543
2544 nre.skb = sky2_rx_alloc(sky2, GFP_ATOMIC);
2545 if (unlikely(!nre.skb))
2546 goto nobuf;
2547
2548 if (sky2_rx_map_skb(sky2->hw->pdev, &nre, hdr_space))
2549 goto nomap;
2550
2551 skb = re->skb;
2552 sky2_rx_unmap_skb(sky2->hw->pdev, re);
2553 prefetch(skb->data);
2554 *re = nre;
2555
2556 if (skb_shinfo(skb)->nr_frags)
2557 skb_put_frags(skb, hdr_space, length);
2558 else
2559 skb_put(skb, length);
2560 return skb;
2561
2562nomap:
2563 dev_kfree_skb(nre.skb);
2564nobuf:
2565 return NULL;
2566}
2567
2568/*
2569 * Receive one packet.
2570 * For larger packets, get new buffer.
2571 */
2572static struct sk_buff *sky2_receive(struct net_device *dev,
2573 u16 length, u32 status)
2574{
2575 struct sky2_port *sky2 = netdev_priv(dev);
2576 struct rx_ring_info *re = sky2->rx_ring + sky2->rx_next;
2577 struct sk_buff *skb = NULL;
2578 u16 count = (status & GMR_FS_LEN) >> 16;
2579
2580 netif_printk(sky2, rx_status, KERN_DEBUG, dev,
2581 "rx slot %u status 0x%x len %d\n",
2582 sky2->rx_next, status, length);
2583
2584 sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending;
2585 prefetch(sky2->rx_ring + sky2->rx_next);
2586
2587 if (skb_vlan_tag_present(re->skb))
2588 count -= VLAN_HLEN; /* Account for vlan tag */
2589
2590 /* This chip has hardware problems that generates bogus status.
2591 * So do only marginal checking and expect higher level protocols
2592 * to handle crap frames.
2593 */
2594 if (sky2->hw->chip_id == CHIP_ID_YUKON_FE_P &&
2595 sky2->hw->chip_rev == CHIP_REV_YU_FE2_A0 &&
2596 length != count)
2597 goto okay;
2598
2599 if (status & GMR_FS_ANY_ERR)
2600 goto error;
2601
2602 if (!(status & GMR_FS_RX_OK))
2603 goto resubmit;
2604
2605 /* if length reported by DMA does not match PHY, packet was truncated */
2606 if (length != count)
2607 goto error;
2608
2609okay:
2610 if (needs_copy(re, length))
2611 skb = receive_copy(sky2, re, length);
2612 else
2613 skb = receive_new(sky2, re, length);
2614
2615 dev->stats.rx_dropped += (skb == NULL);
2616
2617resubmit:
2618 sky2_rx_submit(sky2, re);
2619
2620 return skb;
2621
2622error:
2623 ++dev->stats.rx_errors;
2624
2625 if (net_ratelimit())
2626 netif_info(sky2, rx_err, dev,
2627 "rx error, status 0x%x length %d\n", status, length);
2628
2629 goto resubmit;
2630}
2631
2632/* Transmit complete */
2633static inline void sky2_tx_done(struct net_device *dev, u16 last)
2634{
2635 struct sky2_port *sky2 = netdev_priv(dev);
2636
2637 if (netif_running(dev)) {
2638 sky2_tx_complete(sky2, last);
2639
2640 /* Wake unless it's detached, and called e.g. from sky2_close() */
2641 if (tx_avail(sky2) > MAX_SKB_TX_LE + 4)
2642 netif_wake_queue(dev);
2643 }
2644}
2645
2646static inline void sky2_skb_rx(const struct sky2_port *sky2,
2647 struct sk_buff *skb)
2648{
2649 if (skb->ip_summed == CHECKSUM_NONE)
2650 netif_receive_skb(skb);
2651 else
2652 napi_gro_receive(&sky2->hw->napi, skb);
2653}
2654
2655static inline void sky2_rx_done(struct sky2_hw *hw, unsigned port,
2656 unsigned packets, unsigned bytes)
2657{
2658 struct net_device *dev = hw->dev[port];
2659 struct sky2_port *sky2 = netdev_priv(dev);
2660
2661 if (packets == 0)
2662 return;
2663
2664 u64_stats_update_begin(&sky2->rx_stats.syncp);
2665 sky2->rx_stats.packets += packets;
2666 sky2->rx_stats.bytes += bytes;
2667 u64_stats_update_end(&sky2->rx_stats.syncp);
2668
2669 sky2->last_rx = jiffies;
2670 sky2_rx_update(netdev_priv(dev), rxqaddr[port]);
2671}
2672
2673static void sky2_rx_checksum(struct sky2_port *sky2, u32 status)
2674{
2675 /* If this happens then driver assuming wrong format for chip type */
2676 BUG_ON(sky2->hw->flags & SKY2_HW_NEW_LE);
2677
2678 /* Both checksum counters are programmed to start at
2679 * the same offset, so unless there is a problem they
2680 * should match. This failure is an early indication that
2681 * hardware receive checksumming won't work.
2682 */
2683 if (likely((u16)(status >> 16) == (u16)status)) {
2684 struct sk_buff *skb = sky2->rx_ring[sky2->rx_next].skb;
2685 skb->ip_summed = CHECKSUM_COMPLETE;
2686 skb->csum = le16_to_cpu(status);
2687 } else {
2688 dev_notice(&sky2->hw->pdev->dev,
2689 "%s: receive checksum problem (status = %#x)\n",
2690 sky2->netdev->name, status);
2691
2692 /* Disable checksum offload
2693 * It will be reenabled on next ndo_set_features, but if it's
2694 * really broken, will get disabled again
2695 */
2696 sky2->netdev->features &= ~NETIF_F_RXCSUM;
2697 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
2698 BMU_DIS_RX_CHKSUM);
2699 }
2700}
2701
2702static void sky2_rx_tag(struct sky2_port *sky2, u16 length)
2703{
2704 struct sk_buff *skb;
2705
2706 skb = sky2->rx_ring[sky2->rx_next].skb;
2707 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), be16_to_cpu(length));
2708}
2709
2710static void sky2_rx_hash(struct sky2_port *sky2, u32 status)
2711{
2712 struct sk_buff *skb;
2713
2714 skb = sky2->rx_ring[sky2->rx_next].skb;
2715 skb_set_hash(skb, le32_to_cpu(status), PKT_HASH_TYPE_L3);
2716}
2717
2718/* Process status response ring */
2719static int sky2_status_intr(struct sky2_hw *hw, int to_do, u16 idx)
2720{
2721 int work_done = 0;
2722 unsigned int total_bytes[2] = { 0 };
2723 unsigned int total_packets[2] = { 0 };
2724
2725 if (to_do <= 0)
2726 return work_done;
2727
2728 rmb();
2729 do {
2730 struct sky2_port *sky2;
2731 struct sky2_status_le *le = hw->st_le + hw->st_idx;
2732 unsigned port;
2733 struct net_device *dev;
2734 struct sk_buff *skb;
2735 u32 status;
2736 u16 length;
2737 u8 opcode = le->opcode;
2738
2739 if (!(opcode & HW_OWNER))
2740 break;
2741
2742 hw->st_idx = RING_NEXT(hw->st_idx, hw->st_size);
2743
2744 port = le->css & CSS_LINK_BIT;
2745 dev = hw->dev[port];
2746 sky2 = netdev_priv(dev);
2747 length = le16_to_cpu(le->length);
2748 status = le32_to_cpu(le->status);
2749
2750 le->opcode = 0;
2751 switch (opcode & ~HW_OWNER) {
2752 case OP_RXSTAT:
2753 total_packets[port]++;
2754 total_bytes[port] += length;
2755
2756 skb = sky2_receive(dev, length, status);
2757 if (!skb)
2758 break;
2759
2760 /* This chip reports checksum status differently */
2761 if (hw->flags & SKY2_HW_NEW_LE) {
2762 if ((dev->features & NETIF_F_RXCSUM) &&
2763 (le->css & (CSS_ISIPV4 | CSS_ISIPV6)) &&
2764 (le->css & CSS_TCPUDPCSOK))
2765 skb->ip_summed = CHECKSUM_UNNECESSARY;
2766 else
2767 skb->ip_summed = CHECKSUM_NONE;
2768 }
2769
2770 skb->protocol = eth_type_trans(skb, dev);
2771 sky2_skb_rx(sky2, skb);
2772
2773 /* Stop after net poll weight */
2774 if (++work_done >= to_do)
2775 goto exit_loop;
2776 break;
2777
2778 case OP_RXVLAN:
2779 sky2_rx_tag(sky2, length);
2780 break;
2781
2782 case OP_RXCHKSVLAN:
2783 sky2_rx_tag(sky2, length);
2784 /* fall through */
2785 case OP_RXCHKS:
2786 if (likely(dev->features & NETIF_F_RXCSUM))
2787 sky2_rx_checksum(sky2, status);
2788 break;
2789
2790 case OP_RSS_HASH:
2791 sky2_rx_hash(sky2, status);
2792 break;
2793
2794 case OP_TXINDEXLE:
2795 /* TX index reports status for both ports */
2796 sky2_tx_done(hw->dev[0], status & 0xfff);
2797 if (hw->dev[1])
2798 sky2_tx_done(hw->dev[1],
2799 ((status >> 24) & 0xff)
2800 | (u16)(length & 0xf) << 8);
2801 break;
2802
2803 default:
2804 if (net_ratelimit())
2805 pr_warn("unknown status opcode 0x%x\n", opcode);
2806 }
2807 } while (hw->st_idx != idx);
2808
2809 /* Fully processed status ring so clear irq */
2810 sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
2811
2812exit_loop:
2813 sky2_rx_done(hw, 0, total_packets[0], total_bytes[0]);
2814 sky2_rx_done(hw, 1, total_packets[1], total_bytes[1]);
2815
2816 return work_done;
2817}
2818
2819static void sky2_hw_error(struct sky2_hw *hw, unsigned port, u32 status)
2820{
2821 struct net_device *dev = hw->dev[port];
2822
2823 if (net_ratelimit())
2824 netdev_info(dev, "hw error interrupt status 0x%x\n", status);
2825
2826 if (status & Y2_IS_PAR_RD1) {
2827 if (net_ratelimit())
2828 netdev_err(dev, "ram data read parity error\n");
2829 /* Clear IRQ */
2830 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_RD_PERR);
2831 }
2832
2833 if (status & Y2_IS_PAR_WR1) {
2834 if (net_ratelimit())
2835 netdev_err(dev, "ram data write parity error\n");
2836
2837 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_WR_PERR);
2838 }
2839
2840 if (status & Y2_IS_PAR_MAC1) {
2841 if (net_ratelimit())
2842 netdev_err(dev, "MAC parity error\n");
2843 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_PE);
2844 }
2845
2846 if (status & Y2_IS_PAR_RX1) {
2847 if (net_ratelimit())
2848 netdev_err(dev, "RX parity error\n");
2849 sky2_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), BMU_CLR_IRQ_PAR);
2850 }
2851
2852 if (status & Y2_IS_TCP_TXA1) {
2853 if (net_ratelimit())
2854 netdev_err(dev, "TCP segmentation error\n");
2855 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_CLR_IRQ_TCP);
2856 }
2857}
2858
2859static void sky2_hw_intr(struct sky2_hw *hw)
2860{
2861 struct pci_dev *pdev = hw->pdev;
2862 u32 status = sky2_read32(hw, B0_HWE_ISRC);
2863 u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
2864
2865 status &= hwmsk;
2866
2867 if (status & Y2_IS_TIST_OV)
2868 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2869
2870 if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
2871 u16 pci_err;
2872
2873 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2874 pci_err = sky2_pci_read16(hw, PCI_STATUS);
2875 if (net_ratelimit())
2876 dev_err(&pdev->dev, "PCI hardware error (0x%x)\n",
2877 pci_err);
2878
2879 sky2_pci_write16(hw, PCI_STATUS,
2880 pci_err | PCI_STATUS_ERROR_BITS);
2881 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2882 }
2883
2884 if (status & Y2_IS_PCI_EXP) {
2885 /* PCI-Express uncorrectable Error occurred */
2886 u32 err;
2887
2888 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2889 err = sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
2890 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
2891 0xfffffffful);
2892 if (net_ratelimit())
2893 dev_err(&pdev->dev, "PCI Express error (0x%x)\n", err);
2894
2895 sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
2896 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2897 }
2898
2899 if (status & Y2_HWE_L1_MASK)
2900 sky2_hw_error(hw, 0, status);
2901 status >>= 8;
2902 if (status & Y2_HWE_L1_MASK)
2903 sky2_hw_error(hw, 1, status);
2904}
2905
2906static void sky2_mac_intr(struct sky2_hw *hw, unsigned port)
2907{
2908 struct net_device *dev = hw->dev[port];
2909 struct sky2_port *sky2 = netdev_priv(dev);
2910 u8 status = sky2_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
2911
2912 netif_info(sky2, intr, dev, "mac interrupt status 0x%x\n", status);
2913
2914 if (status & GM_IS_RX_CO_OV)
2915 gma_read16(hw, port, GM_RX_IRQ_SRC);
2916
2917 if (status & GM_IS_TX_CO_OV)
2918 gma_read16(hw, port, GM_TX_IRQ_SRC);
2919
2920 if (status & GM_IS_RX_FF_OR) {
2921 ++dev->stats.rx_fifo_errors;
2922 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
2923 }
2924
2925 if (status & GM_IS_TX_FF_UR) {
2926 ++dev->stats.tx_fifo_errors;
2927 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
2928 }
2929}
2930
2931/* This should never happen it is a bug. */
2932static void sky2_le_error(struct sky2_hw *hw, unsigned port, u16 q)
2933{
2934 struct net_device *dev = hw->dev[port];
2935 u16 idx = sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_GET_IDX));
2936
2937 dev_err(&hw->pdev->dev, "%s: descriptor error q=%#x get=%u put=%u\n",
2938 dev->name, (unsigned) q, (unsigned) idx,
2939 (unsigned) sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX)));
2940
2941 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_IRQ_CHK);
2942}
2943
2944static int sky2_rx_hung(struct net_device *dev)
2945{
2946 struct sky2_port *sky2 = netdev_priv(dev);
2947 struct sky2_hw *hw = sky2->hw;
2948 unsigned port = sky2->port;
2949 unsigned rxq = rxqaddr[port];
2950 u32 mac_rp = sky2_read32(hw, SK_REG(port, RX_GMF_RP));
2951 u8 mac_lev = sky2_read8(hw, SK_REG(port, RX_GMF_RLEV));
2952 u8 fifo_rp = sky2_read8(hw, Q_ADDR(rxq, Q_RP));
2953 u8 fifo_lev = sky2_read8(hw, Q_ADDR(rxq, Q_RL));
2954
2955 /* If idle and MAC or PCI is stuck */
2956 if (sky2->check.last == sky2->last_rx &&
2957 ((mac_rp == sky2->check.mac_rp &&
2958 mac_lev != 0 && mac_lev >= sky2->check.mac_lev) ||
2959 /* Check if the PCI RX hang */
2960 (fifo_rp == sky2->check.fifo_rp &&
2961 fifo_lev != 0 && fifo_lev >= sky2->check.fifo_lev))) {
2962 netdev_printk(KERN_DEBUG, dev,
2963 "hung mac %d:%d fifo %d (%d:%d)\n",
2964 mac_lev, mac_rp, fifo_lev,
2965 fifo_rp, sky2_read8(hw, Q_ADDR(rxq, Q_WP)));
2966 return 1;
2967 } else {
2968 sky2->check.last = sky2->last_rx;
2969 sky2->check.mac_rp = mac_rp;
2970 sky2->check.mac_lev = mac_lev;
2971 sky2->check.fifo_rp = fifo_rp;
2972 sky2->check.fifo_lev = fifo_lev;
2973 return 0;
2974 }
2975}
2976
2977static void sky2_watchdog(struct timer_list *t)
2978{
2979 struct sky2_hw *hw = from_timer(hw, t, watchdog_timer);
2980
2981 /* Check for lost IRQ once a second */
2982 if (sky2_read32(hw, B0_ISRC)) {
2983 napi_schedule(&hw->napi);
2984 } else {
2985 int i, active = 0;
2986
2987 for (i = 0; i < hw->ports; i++) {
2988 struct net_device *dev = hw->dev[i];
2989 if (!netif_running(dev))
2990 continue;
2991 ++active;
2992
2993 /* For chips with Rx FIFO, check if stuck */
2994 if ((hw->flags & SKY2_HW_RAM_BUFFER) &&
2995 sky2_rx_hung(dev)) {
2996 netdev_info(dev, "receiver hang detected\n");
2997 schedule_work(&hw->restart_work);
2998 return;
2999 }
3000 }
3001
3002 if (active == 0)
3003 return;
3004 }
3005
3006 mod_timer(&hw->watchdog_timer, round_jiffies(jiffies + HZ));
3007}
3008
3009/* Hardware/software error handling */
3010static void sky2_err_intr(struct sky2_hw *hw, u32 status)
3011{
3012 if (net_ratelimit())
3013 dev_warn(&hw->pdev->dev, "error interrupt status=%#x\n", status);
3014
3015 if (status & Y2_IS_HW_ERR)
3016 sky2_hw_intr(hw);
3017
3018 if (status & Y2_IS_IRQ_MAC1)
3019 sky2_mac_intr(hw, 0);
3020
3021 if (status & Y2_IS_IRQ_MAC2)
3022 sky2_mac_intr(hw, 1);
3023
3024 if (status & Y2_IS_CHK_RX1)
3025 sky2_le_error(hw, 0, Q_R1);
3026
3027 if (status & Y2_IS_CHK_RX2)
3028 sky2_le_error(hw, 1, Q_R2);
3029
3030 if (status & Y2_IS_CHK_TXA1)
3031 sky2_le_error(hw, 0, Q_XA1);
3032
3033 if (status & Y2_IS_CHK_TXA2)
3034 sky2_le_error(hw, 1, Q_XA2);
3035}
3036
3037static int sky2_poll(struct napi_struct *napi, int work_limit)
3038{
3039 struct sky2_hw *hw = container_of(napi, struct sky2_hw, napi);
3040 u32 status = sky2_read32(hw, B0_Y2_SP_EISR);
3041 int work_done = 0;
3042 u16 idx;
3043
3044 if (unlikely(status & Y2_IS_ERROR))
3045 sky2_err_intr(hw, status);
3046
3047 if (status & Y2_IS_IRQ_PHY1)
3048 sky2_phy_intr(hw, 0);
3049
3050 if (status & Y2_IS_IRQ_PHY2)
3051 sky2_phy_intr(hw, 1);
3052
3053 if (status & Y2_IS_PHY_QLNK)
3054 sky2_qlink_intr(hw);
3055
3056 while ((idx = sky2_read16(hw, STAT_PUT_IDX)) != hw->st_idx) {
3057 work_done += sky2_status_intr(hw, work_limit - work_done, idx);
3058
3059 if (work_done >= work_limit)
3060 goto done;
3061 }
3062
3063 napi_complete_done(napi, work_done);
3064 sky2_read32(hw, B0_Y2_SP_LISR);
3065done:
3066
3067 return work_done;
3068}
3069
3070static irqreturn_t sky2_intr(int irq, void *dev_id)
3071{
3072 struct sky2_hw *hw = dev_id;
3073 u32 status;
3074
3075 /* Reading this mask interrupts as side effect */
3076 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
3077 if (status == 0 || status == ~0) {
3078 sky2_write32(hw, B0_Y2_SP_ICR, 2);
3079 return IRQ_NONE;
3080 }
3081
3082 prefetch(&hw->st_le[hw->st_idx]);
3083
3084 napi_schedule(&hw->napi);
3085
3086 return IRQ_HANDLED;
3087}
3088
3089#ifdef CONFIG_NET_POLL_CONTROLLER
3090static void sky2_netpoll(struct net_device *dev)
3091{
3092 struct sky2_port *sky2 = netdev_priv(dev);
3093
3094 napi_schedule(&sky2->hw->napi);
3095}
3096#endif
3097
3098/* Chip internal frequency for clock calculations */
3099static u32 sky2_mhz(const struct sky2_hw *hw)
3100{
3101 switch (hw->chip_id) {
3102 case CHIP_ID_YUKON_EC:
3103 case CHIP_ID_YUKON_EC_U:
3104 case CHIP_ID_YUKON_EX:
3105 case CHIP_ID_YUKON_SUPR:
3106 case CHIP_ID_YUKON_UL_2:
3107 case CHIP_ID_YUKON_OPT:
3108 case CHIP_ID_YUKON_PRM:
3109 case CHIP_ID_YUKON_OP_2:
3110 return 125;
3111
3112 case CHIP_ID_YUKON_FE:
3113 return 100;
3114
3115 case CHIP_ID_YUKON_FE_P:
3116 return 50;
3117
3118 case CHIP_ID_YUKON_XL:
3119 return 156;
3120
3121 default:
3122 BUG();
3123 }
3124}
3125
3126static inline u32 sky2_us2clk(const struct sky2_hw *hw, u32 us)
3127{
3128 return sky2_mhz(hw) * us;
3129}
3130
3131static inline u32 sky2_clk2us(const struct sky2_hw *hw, u32 clk)
3132{
3133 return clk / sky2_mhz(hw);
3134}
3135
3136
3137static int sky2_init(struct sky2_hw *hw)
3138{
3139 u8 t8;
3140
3141 /* Enable all clocks and check for bad PCI access */
3142 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
3143
3144 sky2_write8(hw, B0_CTST, CS_RST_CLR);
3145
3146 hw->chip_id = sky2_read8(hw, B2_CHIP_ID);
3147 hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4;
3148
3149 switch (hw->chip_id) {
3150 case CHIP_ID_YUKON_XL:
3151 hw->flags = SKY2_HW_GIGABIT | SKY2_HW_NEWER_PHY;
3152 if (hw->chip_rev < CHIP_REV_YU_XL_A2)
3153 hw->flags |= SKY2_HW_RSS_BROKEN;
3154 break;
3155
3156 case CHIP_ID_YUKON_EC_U:
3157 hw->flags = SKY2_HW_GIGABIT
3158 | SKY2_HW_NEWER_PHY
3159 | SKY2_HW_ADV_POWER_CTL;
3160 break;
3161
3162 case CHIP_ID_YUKON_EX:
3163 hw->flags = SKY2_HW_GIGABIT
3164 | SKY2_HW_NEWER_PHY
3165 | SKY2_HW_NEW_LE
3166 | SKY2_HW_ADV_POWER_CTL
3167 | SKY2_HW_RSS_CHKSUM;
3168
3169 /* New transmit checksum */
3170 if (hw->chip_rev != CHIP_REV_YU_EX_B0)
3171 hw->flags |= SKY2_HW_AUTO_TX_SUM;
3172 break;
3173
3174 case CHIP_ID_YUKON_EC:
3175 /* This rev is really old, and requires untested workarounds */
3176 if (hw->chip_rev == CHIP_REV_YU_EC_A1) {
3177 dev_err(&hw->pdev->dev, "unsupported revision Yukon-EC rev A1\n");
3178 return -EOPNOTSUPP;
3179 }
3180 hw->flags = SKY2_HW_GIGABIT | SKY2_HW_RSS_BROKEN;
3181 break;
3182
3183 case CHIP_ID_YUKON_FE:
3184 hw->flags = SKY2_HW_RSS_BROKEN;
3185 break;
3186
3187 case CHIP_ID_YUKON_FE_P:
3188 hw->flags = SKY2_HW_NEWER_PHY
3189 | SKY2_HW_NEW_LE
3190 | SKY2_HW_AUTO_TX_SUM
3191 | SKY2_HW_ADV_POWER_CTL;
3192
3193 /* The workaround for status conflicts VLAN tag detection. */
3194 if (hw->chip_rev == CHIP_REV_YU_FE2_A0)
3195 hw->flags |= SKY2_HW_VLAN_BROKEN | SKY2_HW_RSS_CHKSUM;
3196 break;
3197
3198 case CHIP_ID_YUKON_SUPR:
3199 hw->flags = SKY2_HW_GIGABIT
3200 | SKY2_HW_NEWER_PHY
3201 | SKY2_HW_NEW_LE
3202 | SKY2_HW_AUTO_TX_SUM
3203 | SKY2_HW_ADV_POWER_CTL;
3204
3205 if (hw->chip_rev == CHIP_REV_YU_SU_A0)
3206 hw->flags |= SKY2_HW_RSS_CHKSUM;
3207 break;
3208
3209 case CHIP_ID_YUKON_UL_2:
3210 hw->flags = SKY2_HW_GIGABIT
3211 | SKY2_HW_ADV_POWER_CTL;
3212 break;
3213
3214 case CHIP_ID_YUKON_OPT:
3215 case CHIP_ID_YUKON_PRM:
3216 case CHIP_ID_YUKON_OP_2:
3217 hw->flags = SKY2_HW_GIGABIT
3218 | SKY2_HW_NEW_LE
3219 | SKY2_HW_ADV_POWER_CTL;
3220 break;
3221
3222 default:
3223 dev_err(&hw->pdev->dev, "unsupported chip type 0x%x\n",
3224 hw->chip_id);
3225 return -EOPNOTSUPP;
3226 }
3227
3228 hw->pmd_type = sky2_read8(hw, B2_PMD_TYP);
3229 if (hw->pmd_type == 'L' || hw->pmd_type == 'S' || hw->pmd_type == 'P')
3230 hw->flags |= SKY2_HW_FIBRE_PHY;
3231
3232 hw->ports = 1;
3233 t8 = sky2_read8(hw, B2_Y2_HW_RES);
3234 if ((t8 & CFG_DUAL_MAC_MSK) == CFG_DUAL_MAC_MSK) {
3235 if (!(sky2_read8(hw, B2_Y2_CLK_GATE) & Y2_STATUS_LNK2_INAC))
3236 ++hw->ports;
3237 }
3238
3239 if (sky2_read8(hw, B2_E_0))
3240 hw->flags |= SKY2_HW_RAM_BUFFER;
3241
3242 return 0;
3243}
3244
3245static void sky2_reset(struct sky2_hw *hw)
3246{
3247 struct pci_dev *pdev = hw->pdev;
3248 u16 status;
3249 int i;
3250 u32 hwe_mask = Y2_HWE_ALL_MASK;
3251
3252 /* disable ASF */
3253 if (hw->chip_id == CHIP_ID_YUKON_EX
3254 || hw->chip_id == CHIP_ID_YUKON_SUPR) {
3255 sky2_write32(hw, CPU_WDOG, 0);
3256 status = sky2_read16(hw, HCU_CCSR);
3257 status &= ~(HCU_CCSR_AHB_RST | HCU_CCSR_CPU_RST_MODE |
3258 HCU_CCSR_UC_STATE_MSK);
3259 /*
3260 * CPU clock divider shouldn't be used because
3261 * - ASF firmware may malfunction
3262 * - Yukon-Supreme: Parallel FLASH doesn't support divided clocks
3263 */
3264 status &= ~HCU_CCSR_CPU_CLK_DIVIDE_MSK;
3265 sky2_write16(hw, HCU_CCSR, status);
3266 sky2_write32(hw, CPU_WDOG, 0);
3267 } else
3268 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_RESET);
3269 sky2_write16(hw, B0_CTST, Y2_ASF_DISABLE);
3270
3271 /* do a SW reset */
3272 sky2_write8(hw, B0_CTST, CS_RST_SET);
3273 sky2_write8(hw, B0_CTST, CS_RST_CLR);
3274
3275 /* allow writes to PCI config */
3276 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
3277
3278 /* clear PCI errors, if any */
3279 status = sky2_pci_read16(hw, PCI_STATUS);
3280 status |= PCI_STATUS_ERROR_BITS;
3281 sky2_pci_write16(hw, PCI_STATUS, status);
3282
3283 sky2_write8(hw, B0_CTST, CS_MRST_CLR);
3284
3285 if (pci_is_pcie(pdev)) {
3286 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
3287 0xfffffffful);
3288
3289 /* If error bit is stuck on ignore it */
3290 if (sky2_read32(hw, B0_HWE_ISRC) & Y2_IS_PCI_EXP)
3291 dev_info(&pdev->dev, "ignoring stuck error report bit\n");
3292 else
3293 hwe_mask |= Y2_IS_PCI_EXP;
3294 }
3295
3296 sky2_power_on(hw);
3297 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
3298
3299 for (i = 0; i < hw->ports; i++) {
3300 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
3301 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
3302
3303 if (hw->chip_id == CHIP_ID_YUKON_EX ||
3304 hw->chip_id == CHIP_ID_YUKON_SUPR)
3305 sky2_write16(hw, SK_REG(i, GMAC_CTRL),
3306 GMC_BYP_MACSECRX_ON | GMC_BYP_MACSECTX_ON
3307 | GMC_BYP_RETR_ON);
3308
3309 }
3310
3311 if (hw->chip_id == CHIP_ID_YUKON_SUPR && hw->chip_rev > CHIP_REV_YU_SU_B0) {
3312 /* enable MACSec clock gating */
3313 sky2_pci_write32(hw, PCI_DEV_REG3, P_CLK_MACSEC_DIS);
3314 }
3315
3316 if (hw->chip_id == CHIP_ID_YUKON_OPT ||
3317 hw->chip_id == CHIP_ID_YUKON_PRM ||
3318 hw->chip_id == CHIP_ID_YUKON_OP_2) {
3319 u16 reg;
3320
3321 if (hw->chip_id == CHIP_ID_YUKON_OPT && hw->chip_rev == 0) {
3322 /* disable PCI-E PHY power down (set PHY reg 0x80, bit 7 */
3323 sky2_write32(hw, Y2_PEX_PHY_DATA, (0x80UL << 16) | (1 << 7));
3324
3325 /* set PHY Link Detect Timer to 1.1 second (11x 100ms) */
3326 reg = 10;
3327
3328 /* re-enable PEX PM in PEX PHY debug reg. 8 (clear bit 12) */
3329 sky2_write32(hw, Y2_PEX_PHY_DATA, PEX_DB_ACCESS | (0x08UL << 16));
3330 } else {
3331 /* set PHY Link Detect Timer to 0.4 second (4x 100ms) */
3332 reg = 3;
3333 }
3334
3335 reg <<= PSM_CONFIG_REG4_TIMER_PHY_LINK_DETECT_BASE;
3336 reg |= PSM_CONFIG_REG4_RST_PHY_LINK_DETECT;
3337
3338 /* reset PHY Link Detect */
3339 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
3340 sky2_pci_write16(hw, PSM_CONFIG_REG4, reg);
3341
3342 /* check if PSMv2 was running before */
3343 reg = sky2_pci_read16(hw, PSM_CONFIG_REG3);
3344 if (reg & PCI_EXP_LNKCTL_ASPMC)
3345 /* restore the PCIe Link Control register */
3346 sky2_pci_write16(hw, pdev->pcie_cap + PCI_EXP_LNKCTL,
3347 reg);
3348
3349 if (hw->chip_id == CHIP_ID_YUKON_PRM &&
3350 hw->chip_rev == CHIP_REV_YU_PRM_A0) {
3351 /* change PHY Interrupt polarity to low active */
3352 reg = sky2_read16(hw, GPHY_CTRL);
3353 sky2_write16(hw, GPHY_CTRL, reg | GPC_INTPOL);
3354
3355 /* adapt HW for low active PHY Interrupt */
3356 reg = sky2_read16(hw, Y2_CFG_SPC + PCI_LDO_CTRL);
3357 sky2_write16(hw, Y2_CFG_SPC + PCI_LDO_CTRL, reg | PHY_M_UNDOC1);
3358 }
3359
3360 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
3361
3362 /* re-enable PEX PM in PEX PHY debug reg. 8 (clear bit 12) */
3363 sky2_write32(hw, Y2_PEX_PHY_DATA, PEX_DB_ACCESS | (0x08UL << 16));
3364 }
3365
3366 /* Clear I2C IRQ noise */
3367 sky2_write32(hw, B2_I2C_IRQ, 1);
3368
3369 /* turn off hardware timer (unused) */
3370 sky2_write8(hw, B2_TI_CTRL, TIM_STOP);
3371 sky2_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
3372
3373 /* Turn off descriptor polling */
3374 sky2_write32(hw, B28_DPT_CTRL, DPT_STOP);
3375
3376 /* Turn off receive timestamp */
3377 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP);
3378 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
3379
3380 /* enable the Tx Arbiters */
3381 for (i = 0; i < hw->ports; i++)
3382 sky2_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
3383
3384 /* Initialize ram interface */
3385 for (i = 0; i < hw->ports; i++) {
3386 sky2_write8(hw, RAM_BUFFER(i, B3_RI_CTRL), RI_RST_CLR);
3387
3388 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R1), SK_RI_TO_53);
3389 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA1), SK_RI_TO_53);
3390 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS1), SK_RI_TO_53);
3391 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R1), SK_RI_TO_53);
3392 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA1), SK_RI_TO_53);
3393 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS1), SK_RI_TO_53);
3394 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R2), SK_RI_TO_53);
3395 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA2), SK_RI_TO_53);
3396 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS2), SK_RI_TO_53);
3397 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R2), SK_RI_TO_53);
3398 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA2), SK_RI_TO_53);
3399 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
3400 }
3401
3402 sky2_write32(hw, B0_HWE_IMSK, hwe_mask);
3403
3404 for (i = 0; i < hw->ports; i++)
3405 sky2_gmac_reset(hw, i);
3406
3407 memset(hw->st_le, 0, hw->st_size * sizeof(struct sky2_status_le));
3408 hw->st_idx = 0;
3409
3410 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_SET);
3411 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_CLR);
3412
3413 sky2_write32(hw, STAT_LIST_ADDR_LO, hw->st_dma);
3414 sky2_write32(hw, STAT_LIST_ADDR_HI, (u64) hw->st_dma >> 32);
3415
3416 /* Set the list last index */
3417 sky2_write16(hw, STAT_LAST_IDX, hw->st_size - 1);
3418
3419 sky2_write16(hw, STAT_TX_IDX_TH, 10);
3420 sky2_write8(hw, STAT_FIFO_WM, 16);
3421
3422 /* set Status-FIFO ISR watermark */
3423 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0)
3424 sky2_write8(hw, STAT_FIFO_ISR_WM, 4);
3425 else
3426 sky2_write8(hw, STAT_FIFO_ISR_WM, 16);
3427
3428 sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 1000));
3429 sky2_write32(hw, STAT_ISR_TIMER_INI, sky2_us2clk(hw, 20));
3430 sky2_write32(hw, STAT_LEV_TIMER_INI, sky2_us2clk(hw, 100));
3431
3432 /* enable status unit */
3433 sky2_write32(hw, STAT_CTRL, SC_STAT_OP_ON);
3434
3435 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
3436 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
3437 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
3438}
3439
3440/* Take device down (offline).
3441 * Equivalent to doing dev_stop() but this does not
3442 * inform upper layers of the transition.
3443 */
3444static void sky2_detach(struct net_device *dev)
3445{
3446 if (netif_running(dev)) {
3447 netif_tx_lock(dev);
3448 netif_device_detach(dev); /* stop txq */
3449 netif_tx_unlock(dev);
3450 sky2_close(dev);
3451 }
3452}
3453
3454/* Bring device back after doing sky2_detach */
3455static int sky2_reattach(struct net_device *dev)
3456{
3457 int err = 0;
3458
3459 if (netif_running(dev)) {
3460 err = sky2_open(dev);
3461 if (err) {
3462 netdev_info(dev, "could not restart %d\n", err);
3463 dev_close(dev);
3464 } else {
3465 netif_device_attach(dev);
3466 sky2_set_multicast(dev);
3467 }
3468 }
3469
3470 return err;
3471}
3472
3473static void sky2_all_down(struct sky2_hw *hw)
3474{
3475 int i;
3476
3477 if (hw->flags & SKY2_HW_IRQ_SETUP) {
3478 sky2_write32(hw, B0_IMSK, 0);
3479 sky2_read32(hw, B0_IMSK);
3480
3481 synchronize_irq(hw->pdev->irq);
3482 napi_disable(&hw->napi);
3483 }
3484
3485 for (i = 0; i < hw->ports; i++) {
3486 struct net_device *dev = hw->dev[i];
3487 struct sky2_port *sky2 = netdev_priv(dev);
3488
3489 if (!netif_running(dev))
3490 continue;
3491
3492 netif_carrier_off(dev);
3493 netif_tx_disable(dev);
3494 sky2_hw_down(sky2);
3495 }
3496}
3497
3498static void sky2_all_up(struct sky2_hw *hw)
3499{
3500 u32 imask = Y2_IS_BASE;
3501 int i;
3502
3503 for (i = 0; i < hw->ports; i++) {
3504 struct net_device *dev = hw->dev[i];
3505 struct sky2_port *sky2 = netdev_priv(dev);
3506
3507 if (!netif_running(dev))
3508 continue;
3509
3510 sky2_hw_up(sky2);
3511 sky2_set_multicast(dev);
3512 imask |= portirq_msk[i];
3513 netif_wake_queue(dev);
3514 }
3515
3516 if (hw->flags & SKY2_HW_IRQ_SETUP) {
3517 sky2_write32(hw, B0_IMSK, imask);
3518 sky2_read32(hw, B0_IMSK);
3519 sky2_read32(hw, B0_Y2_SP_LISR);
3520 napi_enable(&hw->napi);
3521 }
3522}
3523
3524static void sky2_restart(struct work_struct *work)
3525{
3526 struct sky2_hw *hw = container_of(work, struct sky2_hw, restart_work);
3527
3528 rtnl_lock();
3529
3530 sky2_all_down(hw);
3531 sky2_reset(hw);
3532 sky2_all_up(hw);
3533
3534 rtnl_unlock();
3535}
3536
3537static inline u8 sky2_wol_supported(const struct sky2_hw *hw)
3538{
3539 return sky2_is_copper(hw) ? (WAKE_PHY | WAKE_MAGIC) : 0;
3540}
3541
3542static void sky2_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3543{
3544 const struct sky2_port *sky2 = netdev_priv(dev);
3545
3546 wol->supported = sky2_wol_supported(sky2->hw);
3547 wol->wolopts = sky2->wol;
3548}
3549
3550static int sky2_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3551{
3552 struct sky2_port *sky2 = netdev_priv(dev);
3553 struct sky2_hw *hw = sky2->hw;
3554 bool enable_wakeup = false;
3555 int i;
3556
3557 if ((wol->wolopts & ~sky2_wol_supported(sky2->hw)) ||
3558 !device_can_wakeup(&hw->pdev->dev))
3559 return -EOPNOTSUPP;
3560
3561 sky2->wol = wol->wolopts;
3562
3563 for (i = 0; i < hw->ports; i++) {
3564 struct net_device *dev = hw->dev[i];
3565 struct sky2_port *sky2 = netdev_priv(dev);
3566
3567 if (sky2->wol)
3568 enable_wakeup = true;
3569 }
3570 device_set_wakeup_enable(&hw->pdev->dev, enable_wakeup);
3571
3572 return 0;
3573}
3574
3575static u32 sky2_supported_modes(const struct sky2_hw *hw)
3576{
3577 if (sky2_is_copper(hw)) {
3578 u32 modes = SUPPORTED_10baseT_Half
3579 | SUPPORTED_10baseT_Full
3580 | SUPPORTED_100baseT_Half
3581 | SUPPORTED_100baseT_Full;
3582
3583 if (hw->flags & SKY2_HW_GIGABIT)
3584 modes |= SUPPORTED_1000baseT_Half
3585 | SUPPORTED_1000baseT_Full;
3586 return modes;
3587 } else
3588 return SUPPORTED_1000baseT_Half
3589 | SUPPORTED_1000baseT_Full;
3590}
3591
3592static int sky2_get_link_ksettings(struct net_device *dev,
3593 struct ethtool_link_ksettings *cmd)
3594{
3595 struct sky2_port *sky2 = netdev_priv(dev);
3596 struct sky2_hw *hw = sky2->hw;
3597 u32 supported, advertising;
3598
3599 supported = sky2_supported_modes(hw);
3600 cmd->base.phy_address = PHY_ADDR_MARV;
3601 if (sky2_is_copper(hw)) {
3602 cmd->base.port = PORT_TP;
3603 cmd->base.speed = sky2->speed;
3604 supported |= SUPPORTED_Autoneg | SUPPORTED_TP;
3605 } else {
3606 cmd->base.speed = SPEED_1000;
3607 cmd->base.port = PORT_FIBRE;
3608 supported |= SUPPORTED_Autoneg | SUPPORTED_FIBRE;
3609 }
3610
3611 advertising = sky2->advertising;
3612 cmd->base.autoneg = (sky2->flags & SKY2_FLAG_AUTO_SPEED)
3613 ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3614 cmd->base.duplex = sky2->duplex;
3615
3616 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
3617 supported);
3618 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
3619 advertising);
3620
3621 return 0;
3622}
3623
3624static int sky2_set_link_ksettings(struct net_device *dev,
3625 const struct ethtool_link_ksettings *cmd)
3626{
3627 struct sky2_port *sky2 = netdev_priv(dev);
3628 const struct sky2_hw *hw = sky2->hw;
3629 u32 supported = sky2_supported_modes(hw);
3630 u32 new_advertising;
3631
3632 ethtool_convert_link_mode_to_legacy_u32(&new_advertising,
3633 cmd->link_modes.advertising);
3634
3635 if (cmd->base.autoneg == AUTONEG_ENABLE) {
3636 if (new_advertising & ~supported)
3637 return -EINVAL;
3638
3639 if (sky2_is_copper(hw))
3640 sky2->advertising = new_advertising |
3641 ADVERTISED_TP |
3642 ADVERTISED_Autoneg;
3643 else
3644 sky2->advertising = new_advertising |
3645 ADVERTISED_FIBRE |
3646 ADVERTISED_Autoneg;
3647
3648 sky2->flags |= SKY2_FLAG_AUTO_SPEED;
3649 sky2->duplex = -1;
3650 sky2->speed = -1;
3651 } else {
3652 u32 setting;
3653 u32 speed = cmd->base.speed;
3654
3655 switch (speed) {
3656 case SPEED_1000:
3657 if (cmd->base.duplex == DUPLEX_FULL)
3658 setting = SUPPORTED_1000baseT_Full;
3659 else if (cmd->base.duplex == DUPLEX_HALF)
3660 setting = SUPPORTED_1000baseT_Half;
3661 else
3662 return -EINVAL;
3663 break;
3664 case SPEED_100:
3665 if (cmd->base.duplex == DUPLEX_FULL)
3666 setting = SUPPORTED_100baseT_Full;
3667 else if (cmd->base.duplex == DUPLEX_HALF)
3668 setting = SUPPORTED_100baseT_Half;
3669 else
3670 return -EINVAL;
3671 break;
3672
3673 case SPEED_10:
3674 if (cmd->base.duplex == DUPLEX_FULL)
3675 setting = SUPPORTED_10baseT_Full;
3676 else if (cmd->base.duplex == DUPLEX_HALF)
3677 setting = SUPPORTED_10baseT_Half;
3678 else
3679 return -EINVAL;
3680 break;
3681 default:
3682 return -EINVAL;
3683 }
3684
3685 if ((setting & supported) == 0)
3686 return -EINVAL;
3687
3688 sky2->speed = speed;
3689 sky2->duplex = cmd->base.duplex;
3690 sky2->flags &= ~SKY2_FLAG_AUTO_SPEED;
3691 }
3692
3693 if (netif_running(dev)) {
3694 sky2_phy_reinit(sky2);
3695 sky2_set_multicast(dev);
3696 }
3697
3698 return 0;
3699}
3700
3701static void sky2_get_drvinfo(struct net_device *dev,
3702 struct ethtool_drvinfo *info)
3703{
3704 struct sky2_port *sky2 = netdev_priv(dev);
3705
3706 strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
3707 strlcpy(info->version, DRV_VERSION, sizeof(info->version));
3708 strlcpy(info->bus_info, pci_name(sky2->hw->pdev),
3709 sizeof(info->bus_info));
3710}
3711
3712static const struct sky2_stat {
3713 char name[ETH_GSTRING_LEN];
3714 u16 offset;
3715} sky2_stats[] = {
3716 { "tx_bytes", GM_TXO_OK_HI },
3717 { "rx_bytes", GM_RXO_OK_HI },
3718 { "tx_broadcast", GM_TXF_BC_OK },
3719 { "rx_broadcast", GM_RXF_BC_OK },
3720 { "tx_multicast", GM_TXF_MC_OK },
3721 { "rx_multicast", GM_RXF_MC_OK },
3722 { "tx_unicast", GM_TXF_UC_OK },
3723 { "rx_unicast", GM_RXF_UC_OK },
3724 { "tx_mac_pause", GM_TXF_MPAUSE },
3725 { "rx_mac_pause", GM_RXF_MPAUSE },
3726 { "collisions", GM_TXF_COL },
3727 { "late_collision",GM_TXF_LAT_COL },
3728 { "aborted", GM_TXF_ABO_COL },
3729 { "single_collisions", GM_TXF_SNG_COL },
3730 { "multi_collisions", GM_TXF_MUL_COL },
3731
3732 { "rx_short", GM_RXF_SHT },
3733 { "rx_runt", GM_RXE_FRAG },
3734 { "rx_64_byte_packets", GM_RXF_64B },
3735 { "rx_65_to_127_byte_packets", GM_RXF_127B },
3736 { "rx_128_to_255_byte_packets", GM_RXF_255B },
3737 { "rx_256_to_511_byte_packets", GM_RXF_511B },
3738 { "rx_512_to_1023_byte_packets", GM_RXF_1023B },
3739 { "rx_1024_to_1518_byte_packets", GM_RXF_1518B },
3740 { "rx_1518_to_max_byte_packets", GM_RXF_MAX_SZ },
3741 { "rx_too_long", GM_RXF_LNG_ERR },
3742 { "rx_fifo_overflow", GM_RXE_FIFO_OV },
3743 { "rx_jabber", GM_RXF_JAB_PKT },
3744 { "rx_fcs_error", GM_RXF_FCS_ERR },
3745
3746 { "tx_64_byte_packets", GM_TXF_64B },
3747 { "tx_65_to_127_byte_packets", GM_TXF_127B },
3748 { "tx_128_to_255_byte_packets", GM_TXF_255B },
3749 { "tx_256_to_511_byte_packets", GM_TXF_511B },
3750 { "tx_512_to_1023_byte_packets", GM_TXF_1023B },
3751 { "tx_1024_to_1518_byte_packets", GM_TXF_1518B },
3752 { "tx_1519_to_max_byte_packets", GM_TXF_MAX_SZ },
3753 { "tx_fifo_underrun", GM_TXE_FIFO_UR },
3754};
3755
3756static u32 sky2_get_msglevel(struct net_device *netdev)
3757{
3758 struct sky2_port *sky2 = netdev_priv(netdev);
3759 return sky2->msg_enable;
3760}
3761
3762static int sky2_nway_reset(struct net_device *dev)
3763{
3764 struct sky2_port *sky2 = netdev_priv(dev);
3765
3766 if (!netif_running(dev) || !(sky2->flags & SKY2_FLAG_AUTO_SPEED))
3767 return -EINVAL;
3768
3769 sky2_phy_reinit(sky2);
3770 sky2_set_multicast(dev);
3771
3772 return 0;
3773}
3774
3775static void sky2_phy_stats(struct sky2_port *sky2, u64 * data, unsigned count)
3776{
3777 struct sky2_hw *hw = sky2->hw;
3778 unsigned port = sky2->port;
3779 int i;
3780
3781 data[0] = get_stats64(hw, port, GM_TXO_OK_LO);
3782 data[1] = get_stats64(hw, port, GM_RXO_OK_LO);
3783
3784 for (i = 2; i < count; i++)
3785 data[i] = get_stats32(hw, port, sky2_stats[i].offset);
3786}
3787
3788static void sky2_set_msglevel(struct net_device *netdev, u32 value)
3789{
3790 struct sky2_port *sky2 = netdev_priv(netdev);
3791 sky2->msg_enable = value;
3792}
3793
3794static int sky2_get_sset_count(struct net_device *dev, int sset)
3795{
3796 switch (sset) {
3797 case ETH_SS_STATS:
3798 return ARRAY_SIZE(sky2_stats);
3799 default:
3800 return -EOPNOTSUPP;
3801 }
3802}
3803
3804static void sky2_get_ethtool_stats(struct net_device *dev,
3805 struct ethtool_stats *stats, u64 * data)
3806{
3807 struct sky2_port *sky2 = netdev_priv(dev);
3808
3809 sky2_phy_stats(sky2, data, ARRAY_SIZE(sky2_stats));
3810}
3811
3812static void sky2_get_strings(struct net_device *dev, u32 stringset, u8 * data)
3813{
3814 int i;
3815
3816 switch (stringset) {
3817 case ETH_SS_STATS:
3818 for (i = 0; i < ARRAY_SIZE(sky2_stats); i++)
3819 memcpy(data + i * ETH_GSTRING_LEN,
3820 sky2_stats[i].name, ETH_GSTRING_LEN);
3821 break;
3822 }
3823}
3824
3825static int sky2_set_mac_address(struct net_device *dev, void *p)
3826{
3827 struct sky2_port *sky2 = netdev_priv(dev);
3828 struct sky2_hw *hw = sky2->hw;
3829 unsigned port = sky2->port;
3830 const struct sockaddr *addr = p;
3831
3832 if (!is_valid_ether_addr(addr->sa_data))
3833 return -EADDRNOTAVAIL;
3834
3835 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
3836 memcpy_toio(hw->regs + B2_MAC_1 + port * 8,
3837 dev->dev_addr, ETH_ALEN);
3838 memcpy_toio(hw->regs + B2_MAC_2 + port * 8,
3839 dev->dev_addr, ETH_ALEN);
3840
3841 /* virtual address for data */
3842 gma_set_addr(hw, port, GM_SRC_ADDR_2L, dev->dev_addr);
3843
3844 /* physical address: used for pause frames */
3845 gma_set_addr(hw, port, GM_SRC_ADDR_1L, dev->dev_addr);
3846
3847 return 0;
3848}
3849
3850static inline void sky2_add_filter(u8 filter[8], const u8 *addr)
3851{
3852 u32 bit;
3853
3854 bit = ether_crc(ETH_ALEN, addr) & 63;
3855 filter[bit >> 3] |= 1 << (bit & 7);
3856}
3857
3858static void sky2_set_multicast(struct net_device *dev)
3859{
3860 struct sky2_port *sky2 = netdev_priv(dev);
3861 struct sky2_hw *hw = sky2->hw;
3862 unsigned port = sky2->port;
3863 struct netdev_hw_addr *ha;
3864 u16 reg;
3865 u8 filter[8];
3866 int rx_pause;
3867 static const u8 pause_mc_addr[ETH_ALEN] = { 0x1, 0x80, 0xc2, 0x0, 0x0, 0x1 };
3868
3869 rx_pause = (sky2->flow_status == FC_RX || sky2->flow_status == FC_BOTH);
3870 memset(filter, 0, sizeof(filter));
3871
3872 reg = gma_read16(hw, port, GM_RX_CTRL);
3873 reg |= GM_RXCR_UCF_ENA;
3874
3875 if (dev->flags & IFF_PROMISC) /* promiscuous */
3876 reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
3877 else if (dev->flags & IFF_ALLMULTI)
3878 memset(filter, 0xff, sizeof(filter));
3879 else if (netdev_mc_empty(dev) && !rx_pause)
3880 reg &= ~GM_RXCR_MCF_ENA;
3881 else {
3882 reg |= GM_RXCR_MCF_ENA;
3883
3884 if (rx_pause)
3885 sky2_add_filter(filter, pause_mc_addr);
3886
3887 netdev_for_each_mc_addr(ha, dev)
3888 sky2_add_filter(filter, ha->addr);
3889 }
3890
3891 gma_write16(hw, port, GM_MC_ADDR_H1,
3892 (u16) filter[0] | ((u16) filter[1] << 8));
3893 gma_write16(hw, port, GM_MC_ADDR_H2,
3894 (u16) filter[2] | ((u16) filter[3] << 8));
3895 gma_write16(hw, port, GM_MC_ADDR_H3,
3896 (u16) filter[4] | ((u16) filter[5] << 8));
3897 gma_write16(hw, port, GM_MC_ADDR_H4,
3898 (u16) filter[6] | ((u16) filter[7] << 8));
3899
3900 gma_write16(hw, port, GM_RX_CTRL, reg);
3901}
3902
3903static void sky2_get_stats(struct net_device *dev,
3904 struct rtnl_link_stats64 *stats)
3905{
3906 struct sky2_port *sky2 = netdev_priv(dev);
3907 struct sky2_hw *hw = sky2->hw;
3908 unsigned port = sky2->port;
3909 unsigned int start;
3910 u64 _bytes, _packets;
3911
3912 do {
3913 start = u64_stats_fetch_begin_irq(&sky2->rx_stats.syncp);
3914 _bytes = sky2->rx_stats.bytes;
3915 _packets = sky2->rx_stats.packets;
3916 } while (u64_stats_fetch_retry_irq(&sky2->rx_stats.syncp, start));
3917
3918 stats->rx_packets = _packets;
3919 stats->rx_bytes = _bytes;
3920
3921 do {
3922 start = u64_stats_fetch_begin_irq(&sky2->tx_stats.syncp);
3923 _bytes = sky2->tx_stats.bytes;
3924 _packets = sky2->tx_stats.packets;
3925 } while (u64_stats_fetch_retry_irq(&sky2->tx_stats.syncp, start));
3926
3927 stats->tx_packets = _packets;
3928 stats->tx_bytes = _bytes;
3929
3930 stats->multicast = get_stats32(hw, port, GM_RXF_MC_OK)
3931 + get_stats32(hw, port, GM_RXF_BC_OK);
3932
3933 stats->collisions = get_stats32(hw, port, GM_TXF_COL);
3934
3935 stats->rx_length_errors = get_stats32(hw, port, GM_RXF_LNG_ERR);
3936 stats->rx_crc_errors = get_stats32(hw, port, GM_RXF_FCS_ERR);
3937 stats->rx_frame_errors = get_stats32(hw, port, GM_RXF_SHT)
3938 + get_stats32(hw, port, GM_RXE_FRAG);
3939 stats->rx_over_errors = get_stats32(hw, port, GM_RXE_FIFO_OV);
3940
3941 stats->rx_dropped = dev->stats.rx_dropped;
3942 stats->rx_fifo_errors = dev->stats.rx_fifo_errors;
3943 stats->tx_fifo_errors = dev->stats.tx_fifo_errors;
3944}
3945
3946/* Can have one global because blinking is controlled by
3947 * ethtool and that is always under RTNL mutex
3948 */
3949static void sky2_led(struct sky2_port *sky2, enum led_mode mode)
3950{
3951 struct sky2_hw *hw = sky2->hw;
3952 unsigned port = sky2->port;
3953
3954 spin_lock_bh(&sky2->phy_lock);
3955 if (hw->chip_id == CHIP_ID_YUKON_EC_U ||
3956 hw->chip_id == CHIP_ID_YUKON_EX ||
3957 hw->chip_id == CHIP_ID_YUKON_SUPR) {
3958 u16 pg;
3959 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
3960 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
3961
3962 switch (mode) {
3963 case MO_LED_OFF:
3964 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3965 PHY_M_LEDC_LOS_CTRL(8) |
3966 PHY_M_LEDC_INIT_CTRL(8) |
3967 PHY_M_LEDC_STA1_CTRL(8) |
3968 PHY_M_LEDC_STA0_CTRL(8));
3969 break;
3970 case MO_LED_ON:
3971 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3972 PHY_M_LEDC_LOS_CTRL(9) |
3973 PHY_M_LEDC_INIT_CTRL(9) |
3974 PHY_M_LEDC_STA1_CTRL(9) |
3975 PHY_M_LEDC_STA0_CTRL(9));
3976 break;
3977 case MO_LED_BLINK:
3978 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3979 PHY_M_LEDC_LOS_CTRL(0xa) |
3980 PHY_M_LEDC_INIT_CTRL(0xa) |
3981 PHY_M_LEDC_STA1_CTRL(0xa) |
3982 PHY_M_LEDC_STA0_CTRL(0xa));
3983 break;
3984 case MO_LED_NORM:
3985 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3986 PHY_M_LEDC_LOS_CTRL(1) |
3987 PHY_M_LEDC_INIT_CTRL(8) |
3988 PHY_M_LEDC_STA1_CTRL(7) |
3989 PHY_M_LEDC_STA0_CTRL(7));
3990 }
3991
3992 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
3993 } else
3994 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
3995 PHY_M_LED_MO_DUP(mode) |
3996 PHY_M_LED_MO_10(mode) |
3997 PHY_M_LED_MO_100(mode) |
3998 PHY_M_LED_MO_1000(mode) |
3999 PHY_M_LED_MO_RX(mode) |
4000 PHY_M_LED_MO_TX(mode));
4001
4002 spin_unlock_bh(&sky2->phy_lock);
4003}
4004
4005/* blink LED's for finding board */
4006static int sky2_set_phys_id(struct net_device *dev,
4007 enum ethtool_phys_id_state state)
4008{
4009 struct sky2_port *sky2 = netdev_priv(dev);
4010
4011 switch (state) {
4012 case ETHTOOL_ID_ACTIVE:
4013 return 1; /* cycle on/off once per second */
4014 case ETHTOOL_ID_INACTIVE:
4015 sky2_led(sky2, MO_LED_NORM);
4016 break;
4017 case ETHTOOL_ID_ON:
4018 sky2_led(sky2, MO_LED_ON);
4019 break;
4020 case ETHTOOL_ID_OFF:
4021 sky2_led(sky2, MO_LED_OFF);
4022 break;
4023 }
4024
4025 return 0;
4026}
4027
4028static void sky2_get_pauseparam(struct net_device *dev,
4029 struct ethtool_pauseparam *ecmd)
4030{
4031 struct sky2_port *sky2 = netdev_priv(dev);
4032
4033 switch (sky2->flow_mode) {
4034 case FC_NONE:
4035 ecmd->tx_pause = ecmd->rx_pause = 0;
4036 break;
4037 case FC_TX:
4038 ecmd->tx_pause = 1, ecmd->rx_pause = 0;
4039 break;
4040 case FC_RX:
4041 ecmd->tx_pause = 0, ecmd->rx_pause = 1;
4042 break;
4043 case FC_BOTH:
4044 ecmd->tx_pause = ecmd->rx_pause = 1;
4045 }
4046
4047 ecmd->autoneg = (sky2->flags & SKY2_FLAG_AUTO_PAUSE)
4048 ? AUTONEG_ENABLE : AUTONEG_DISABLE;
4049}
4050
4051static int sky2_set_pauseparam(struct net_device *dev,
4052 struct ethtool_pauseparam *ecmd)
4053{
4054 struct sky2_port *sky2 = netdev_priv(dev);
4055
4056 if (ecmd->autoneg == AUTONEG_ENABLE)
4057 sky2->flags |= SKY2_FLAG_AUTO_PAUSE;
4058 else
4059 sky2->flags &= ~SKY2_FLAG_AUTO_PAUSE;
4060
4061 sky2->flow_mode = sky2_flow(ecmd->rx_pause, ecmd->tx_pause);
4062
4063 if (netif_running(dev))
4064 sky2_phy_reinit(sky2);
4065
4066 return 0;
4067}
4068
4069static int sky2_get_coalesce(struct net_device *dev,
4070 struct ethtool_coalesce *ecmd)
4071{
4072 struct sky2_port *sky2 = netdev_priv(dev);
4073 struct sky2_hw *hw = sky2->hw;
4074
4075 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_STOP)
4076 ecmd->tx_coalesce_usecs = 0;
4077 else {
4078 u32 clks = sky2_read32(hw, STAT_TX_TIMER_INI);
4079 ecmd->tx_coalesce_usecs = sky2_clk2us(hw, clks);
4080 }
4081 ecmd->tx_max_coalesced_frames = sky2_read16(hw, STAT_TX_IDX_TH);
4082
4083 if (sky2_read8(hw, STAT_LEV_TIMER_CTRL) == TIM_STOP)
4084 ecmd->rx_coalesce_usecs = 0;
4085 else {
4086 u32 clks = sky2_read32(hw, STAT_LEV_TIMER_INI);
4087 ecmd->rx_coalesce_usecs = sky2_clk2us(hw, clks);
4088 }
4089 ecmd->rx_max_coalesced_frames = sky2_read8(hw, STAT_FIFO_WM);
4090
4091 if (sky2_read8(hw, STAT_ISR_TIMER_CTRL) == TIM_STOP)
4092 ecmd->rx_coalesce_usecs_irq = 0;
4093 else {
4094 u32 clks = sky2_read32(hw, STAT_ISR_TIMER_INI);
4095 ecmd->rx_coalesce_usecs_irq = sky2_clk2us(hw, clks);
4096 }
4097
4098 ecmd->rx_max_coalesced_frames_irq = sky2_read8(hw, STAT_FIFO_ISR_WM);
4099
4100 return 0;
4101}
4102
4103/* Note: this affect both ports */
4104static int sky2_set_coalesce(struct net_device *dev,
4105 struct ethtool_coalesce *ecmd)
4106{
4107 struct sky2_port *sky2 = netdev_priv(dev);
4108 struct sky2_hw *hw = sky2->hw;
4109 const u32 tmax = sky2_clk2us(hw, 0x0ffffff);
4110
4111 if (ecmd->tx_coalesce_usecs > tmax ||
4112 ecmd->rx_coalesce_usecs > tmax ||
4113 ecmd->rx_coalesce_usecs_irq > tmax)
4114 return -EINVAL;
4115
4116 if (ecmd->tx_max_coalesced_frames >= sky2->tx_ring_size-1)
4117 return -EINVAL;
4118 if (ecmd->rx_max_coalesced_frames > RX_MAX_PENDING)
4119 return -EINVAL;
4120 if (ecmd->rx_max_coalesced_frames_irq > RX_MAX_PENDING)
4121 return -EINVAL;
4122
4123 if (ecmd->tx_coalesce_usecs == 0)
4124 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
4125 else {
4126 sky2_write32(hw, STAT_TX_TIMER_INI,
4127 sky2_us2clk(hw, ecmd->tx_coalesce_usecs));
4128 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
4129 }
4130 sky2_write16(hw, STAT_TX_IDX_TH, ecmd->tx_max_coalesced_frames);
4131
4132 if (ecmd->rx_coalesce_usecs == 0)
4133 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_STOP);
4134 else {
4135 sky2_write32(hw, STAT_LEV_TIMER_INI,
4136 sky2_us2clk(hw, ecmd->rx_coalesce_usecs));
4137 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
4138 }
4139 sky2_write8(hw, STAT_FIFO_WM, ecmd->rx_max_coalesced_frames);
4140
4141 if (ecmd->rx_coalesce_usecs_irq == 0)
4142 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_STOP);
4143 else {
4144 sky2_write32(hw, STAT_ISR_TIMER_INI,
4145 sky2_us2clk(hw, ecmd->rx_coalesce_usecs_irq));
4146 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
4147 }
4148 sky2_write8(hw, STAT_FIFO_ISR_WM, ecmd->rx_max_coalesced_frames_irq);
4149 return 0;
4150}
4151
4152/*
4153 * Hardware is limited to min of 128 and max of 2048 for ring size
4154 * and rounded up to next power of two
4155 * to avoid division in modulus calclation
4156 */
4157static unsigned long roundup_ring_size(unsigned long pending)
4158{
4159 return max(128ul, roundup_pow_of_two(pending+1));
4160}
4161
4162static void sky2_get_ringparam(struct net_device *dev,
4163 struct ethtool_ringparam *ering)
4164{
4165 struct sky2_port *sky2 = netdev_priv(dev);
4166
4167 ering->rx_max_pending = RX_MAX_PENDING;
4168 ering->tx_max_pending = TX_MAX_PENDING;
4169
4170 ering->rx_pending = sky2->rx_pending;
4171 ering->tx_pending = sky2->tx_pending;
4172}
4173
4174static int sky2_set_ringparam(struct net_device *dev,
4175 struct ethtool_ringparam *ering)
4176{
4177 struct sky2_port *sky2 = netdev_priv(dev);
4178
4179 if (ering->rx_pending > RX_MAX_PENDING ||
4180 ering->rx_pending < 8 ||
4181 ering->tx_pending < TX_MIN_PENDING ||
4182 ering->tx_pending > TX_MAX_PENDING)
4183 return -EINVAL;
4184
4185 sky2_detach(dev);
4186
4187 sky2->rx_pending = ering->rx_pending;
4188 sky2->tx_pending = ering->tx_pending;
4189 sky2->tx_ring_size = roundup_ring_size(sky2->tx_pending);
4190
4191 return sky2_reattach(dev);
4192}
4193
4194static int sky2_get_regs_len(struct net_device *dev)
4195{
4196 return 0x4000;
4197}
4198
4199static int sky2_reg_access_ok(struct sky2_hw *hw, unsigned int b)
4200{
4201 /* This complicated switch statement is to make sure and
4202 * only access regions that are unreserved.
4203 * Some blocks are only valid on dual port cards.
4204 */
4205 switch (b) {
4206 /* second port */
4207 case 5: /* Tx Arbiter 2 */
4208 case 9: /* RX2 */
4209 case 14 ... 15: /* TX2 */
4210 case 17: case 19: /* Ram Buffer 2 */
4211 case 22 ... 23: /* Tx Ram Buffer 2 */
4212 case 25: /* Rx MAC Fifo 1 */
4213 case 27: /* Tx MAC Fifo 2 */
4214 case 31: /* GPHY 2 */
4215 case 40 ... 47: /* Pattern Ram 2 */
4216 case 52: case 54: /* TCP Segmentation 2 */
4217 case 112 ... 116: /* GMAC 2 */
4218 return hw->ports > 1;
4219
4220 case 0: /* Control */
4221 case 2: /* Mac address */
4222 case 4: /* Tx Arbiter 1 */
4223 case 7: /* PCI express reg */
4224 case 8: /* RX1 */
4225 case 12 ... 13: /* TX1 */
4226 case 16: case 18:/* Rx Ram Buffer 1 */
4227 case 20 ... 21: /* Tx Ram Buffer 1 */
4228 case 24: /* Rx MAC Fifo 1 */
4229 case 26: /* Tx MAC Fifo 1 */
4230 case 28 ... 29: /* Descriptor and status unit */
4231 case 30: /* GPHY 1*/
4232 case 32 ... 39: /* Pattern Ram 1 */
4233 case 48: case 50: /* TCP Segmentation 1 */
4234 case 56 ... 60: /* PCI space */
4235 case 80 ... 84: /* GMAC 1 */
4236 return 1;
4237
4238 default:
4239 return 0;
4240 }
4241}
4242
4243/*
4244 * Returns copy of control register region
4245 * Note: ethtool_get_regs always provides full size (16k) buffer
4246 */
4247static void sky2_get_regs(struct net_device *dev, struct ethtool_regs *regs,
4248 void *p)
4249{
4250 const struct sky2_port *sky2 = netdev_priv(dev);
4251 const void __iomem *io = sky2->hw->regs;
4252 unsigned int b;
4253
4254 regs->version = 1;
4255
4256 for (b = 0; b < 128; b++) {
4257 /* skip poisonous diagnostic ram region in block 3 */
4258 if (b == 3)
4259 memcpy_fromio(p + 0x10, io + 0x10, 128 - 0x10);
4260 else if (sky2_reg_access_ok(sky2->hw, b))
4261 memcpy_fromio(p, io, 128);
4262 else
4263 memset(p, 0, 128);
4264
4265 p += 128;
4266 io += 128;
4267 }
4268}
4269
4270static int sky2_get_eeprom_len(struct net_device *dev)
4271{
4272 struct sky2_port *sky2 = netdev_priv(dev);
4273 struct sky2_hw *hw = sky2->hw;
4274 u16 reg2;
4275
4276 reg2 = sky2_pci_read16(hw, PCI_DEV_REG2);
4277 return 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
4278}
4279
4280static int sky2_vpd_wait(const struct sky2_hw *hw, int cap, u16 busy)
4281{
4282 unsigned long start = jiffies;
4283
4284 while ( (sky2_pci_read16(hw, cap + PCI_VPD_ADDR) & PCI_VPD_ADDR_F) == busy) {
4285 /* Can take up to 10.6 ms for write */
4286 if (time_after(jiffies, start + HZ/4)) {
4287 dev_err(&hw->pdev->dev, "VPD cycle timed out\n");
4288 return -ETIMEDOUT;
4289 }
4290 msleep(1);
4291 }
4292
4293 return 0;
4294}
4295
4296static int sky2_vpd_read(struct sky2_hw *hw, int cap, void *data,
4297 u16 offset, size_t length)
4298{
4299 int rc = 0;
4300
4301 while (length > 0) {
4302 u32 val;
4303
4304 sky2_pci_write16(hw, cap + PCI_VPD_ADDR, offset);
4305 rc = sky2_vpd_wait(hw, cap, 0);
4306 if (rc)
4307 break;
4308
4309 val = sky2_pci_read32(hw, cap + PCI_VPD_DATA);
4310
4311 memcpy(data, &val, min(sizeof(val), length));
4312 offset += sizeof(u32);
4313 data += sizeof(u32);
4314 length -= sizeof(u32);
4315 }
4316
4317 return rc;
4318}
4319
4320static int sky2_vpd_write(struct sky2_hw *hw, int cap, const void *data,
4321 u16 offset, unsigned int length)
4322{
4323 unsigned int i;
4324 int rc = 0;
4325
4326 for (i = 0; i < length; i += sizeof(u32)) {
4327 u32 val = *(u32 *)(data + i);
4328
4329 sky2_pci_write32(hw, cap + PCI_VPD_DATA, val);
4330 sky2_pci_write32(hw, cap + PCI_VPD_ADDR, offset | PCI_VPD_ADDR_F);
4331
4332 rc = sky2_vpd_wait(hw, cap, PCI_VPD_ADDR_F);
4333 if (rc)
4334 break;
4335 }
4336 return rc;
4337}
4338
4339static int sky2_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
4340 u8 *data)
4341{
4342 struct sky2_port *sky2 = netdev_priv(dev);
4343 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
4344
4345 if (!cap)
4346 return -EINVAL;
4347
4348 eeprom->magic = SKY2_EEPROM_MAGIC;
4349
4350 return sky2_vpd_read(sky2->hw, cap, data, eeprom->offset, eeprom->len);
4351}
4352
4353static int sky2_set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
4354 u8 *data)
4355{
4356 struct sky2_port *sky2 = netdev_priv(dev);
4357 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
4358
4359 if (!cap)
4360 return -EINVAL;
4361
4362 if (eeprom->magic != SKY2_EEPROM_MAGIC)
4363 return -EINVAL;
4364
4365 /* Partial writes not supported */
4366 if ((eeprom->offset & 3) || (eeprom->len & 3))
4367 return -EINVAL;
4368
4369 return sky2_vpd_write(sky2->hw, cap, data, eeprom->offset, eeprom->len);
4370}
4371
4372static netdev_features_t sky2_fix_features(struct net_device *dev,
4373 netdev_features_t features)
4374{
4375 const struct sky2_port *sky2 = netdev_priv(dev);
4376 const struct sky2_hw *hw = sky2->hw;
4377
4378 /* In order to do Jumbo packets on these chips, need to turn off the
4379 * transmit store/forward. Therefore checksum offload won't work.
4380 */
4381 if (dev->mtu > ETH_DATA_LEN && hw->chip_id == CHIP_ID_YUKON_EC_U) {
4382 netdev_info(dev, "checksum offload not possible with jumbo frames\n");
4383 features &= ~(NETIF_F_TSO | NETIF_F_SG | NETIF_F_CSUM_MASK);
4384 }
4385
4386 /* Some hardware requires receive checksum for RSS to work. */
4387 if ( (features & NETIF_F_RXHASH) &&
4388 !(features & NETIF_F_RXCSUM) &&
4389 (sky2->hw->flags & SKY2_HW_RSS_CHKSUM)) {
4390 netdev_info(dev, "receive hashing forces receive checksum\n");
4391 features |= NETIF_F_RXCSUM;
4392 }
4393
4394 return features;
4395}
4396
4397static int sky2_set_features(struct net_device *dev, netdev_features_t features)
4398{
4399 struct sky2_port *sky2 = netdev_priv(dev);
4400 netdev_features_t changed = dev->features ^ features;
4401
4402 if ((changed & NETIF_F_RXCSUM) &&
4403 !(sky2->hw->flags & SKY2_HW_NEW_LE)) {
4404 sky2_write32(sky2->hw,
4405 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
4406 (features & NETIF_F_RXCSUM)
4407 ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
4408 }
4409
4410 if (changed & NETIF_F_RXHASH)
4411 rx_set_rss(dev, features);
4412
4413 if (changed & (NETIF_F_HW_VLAN_CTAG_TX|NETIF_F_HW_VLAN_CTAG_RX))
4414 sky2_vlan_mode(dev, features);
4415
4416 return 0;
4417}
4418
4419static const struct ethtool_ops sky2_ethtool_ops = {
4420 .get_drvinfo = sky2_get_drvinfo,
4421 .get_wol = sky2_get_wol,
4422 .set_wol = sky2_set_wol,
4423 .get_msglevel = sky2_get_msglevel,
4424 .set_msglevel = sky2_set_msglevel,
4425 .nway_reset = sky2_nway_reset,
4426 .get_regs_len = sky2_get_regs_len,
4427 .get_regs = sky2_get_regs,
4428 .get_link = ethtool_op_get_link,
4429 .get_eeprom_len = sky2_get_eeprom_len,
4430 .get_eeprom = sky2_get_eeprom,
4431 .set_eeprom = sky2_set_eeprom,
4432 .get_strings = sky2_get_strings,
4433 .get_coalesce = sky2_get_coalesce,
4434 .set_coalesce = sky2_set_coalesce,
4435 .get_ringparam = sky2_get_ringparam,
4436 .set_ringparam = sky2_set_ringparam,
4437 .get_pauseparam = sky2_get_pauseparam,
4438 .set_pauseparam = sky2_set_pauseparam,
4439 .set_phys_id = sky2_set_phys_id,
4440 .get_sset_count = sky2_get_sset_count,
4441 .get_ethtool_stats = sky2_get_ethtool_stats,
4442 .get_link_ksettings = sky2_get_link_ksettings,
4443 .set_link_ksettings = sky2_set_link_ksettings,
4444};
4445
4446#ifdef CONFIG_SKY2_DEBUG
4447
4448static struct dentry *sky2_debug;
4449
4450
4451/*
4452 * Read and parse the first part of Vital Product Data
4453 */
4454#define VPD_SIZE 128
4455#define VPD_MAGIC 0x82
4456
4457static const struct vpd_tag {
4458 char tag[2];
4459 char *label;
4460} vpd_tags[] = {
4461 { "PN", "Part Number" },
4462 { "EC", "Engineering Level" },
4463 { "MN", "Manufacturer" },
4464 { "SN", "Serial Number" },
4465 { "YA", "Asset Tag" },
4466 { "VL", "First Error Log Message" },
4467 { "VF", "Second Error Log Message" },
4468 { "VB", "Boot Agent ROM Configuration" },
4469 { "VE", "EFI UNDI Configuration" },
4470};
4471
4472static void sky2_show_vpd(struct seq_file *seq, struct sky2_hw *hw)
4473{
4474 size_t vpd_size;
4475 loff_t offs;
4476 u8 len;
4477 unsigned char *buf;
4478 u16 reg2;
4479
4480 reg2 = sky2_pci_read16(hw, PCI_DEV_REG2);
4481 vpd_size = 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
4482
4483 seq_printf(seq, "%s Product Data\n", pci_name(hw->pdev));
4484 buf = kmalloc(vpd_size, GFP_KERNEL);
4485 if (!buf) {
4486 seq_puts(seq, "no memory!\n");
4487 return;
4488 }
4489
4490 if (pci_read_vpd(hw->pdev, 0, vpd_size, buf) < 0) {
4491 seq_puts(seq, "VPD read failed\n");
4492 goto out;
4493 }
4494
4495 if (buf[0] != VPD_MAGIC) {
4496 seq_printf(seq, "VPD tag mismatch: %#x\n", buf[0]);
4497 goto out;
4498 }
4499 len = buf[1];
4500 if (len == 0 || len > vpd_size - 4) {
4501 seq_printf(seq, "Invalid id length: %d\n", len);
4502 goto out;
4503 }
4504
4505 seq_printf(seq, "%.*s\n", len, buf + 3);
4506 offs = len + 3;
4507
4508 while (offs < vpd_size - 4) {
4509 int i;
4510
4511 if (!memcmp("RW", buf + offs, 2)) /* end marker */
4512 break;
4513 len = buf[offs + 2];
4514 if (offs + len + 3 >= vpd_size)
4515 break;
4516
4517 for (i = 0; i < ARRAY_SIZE(vpd_tags); i++) {
4518 if (!memcmp(vpd_tags[i].tag, buf + offs, 2)) {
4519 seq_printf(seq, " %s: %.*s\n",
4520 vpd_tags[i].label, len, buf + offs + 3);
4521 break;
4522 }
4523 }
4524 offs += len + 3;
4525 }
4526out:
4527 kfree(buf);
4528}
4529
4530static int sky2_debug_show(struct seq_file *seq, void *v)
4531{
4532 struct net_device *dev = seq->private;
4533 const struct sky2_port *sky2 = netdev_priv(dev);
4534 struct sky2_hw *hw = sky2->hw;
4535 unsigned port = sky2->port;
4536 unsigned idx, last;
4537 int sop;
4538
4539 sky2_show_vpd(seq, hw);
4540
4541 seq_printf(seq, "\nIRQ src=%x mask=%x control=%x\n",
4542 sky2_read32(hw, B0_ISRC),
4543 sky2_read32(hw, B0_IMSK),
4544 sky2_read32(hw, B0_Y2_SP_ICR));
4545
4546 if (!netif_running(dev)) {
4547 seq_puts(seq, "network not running\n");
4548 return 0;
4549 }
4550
4551 napi_disable(&hw->napi);
4552 last = sky2_read16(hw, STAT_PUT_IDX);
4553
4554 seq_printf(seq, "Status ring %u\n", hw->st_size);
4555 if (hw->st_idx == last)
4556 seq_puts(seq, "Status ring (empty)\n");
4557 else {
4558 seq_puts(seq, "Status ring\n");
4559 for (idx = hw->st_idx; idx != last && idx < hw->st_size;
4560 idx = RING_NEXT(idx, hw->st_size)) {
4561 const struct sky2_status_le *le = hw->st_le + idx;
4562 seq_printf(seq, "[%d] %#x %d %#x\n",
4563 idx, le->opcode, le->length, le->status);
4564 }
4565 seq_puts(seq, "\n");
4566 }
4567
4568 seq_printf(seq, "Tx ring pending=%u...%u report=%d done=%d\n",
4569 sky2->tx_cons, sky2->tx_prod,
4570 sky2_read16(hw, port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
4571 sky2_read16(hw, Q_ADDR(txqaddr[port], Q_DONE)));
4572
4573 /* Dump contents of tx ring */
4574 sop = 1;
4575 for (idx = sky2->tx_next; idx != sky2->tx_prod && idx < sky2->tx_ring_size;
4576 idx = RING_NEXT(idx, sky2->tx_ring_size)) {
4577 const struct sky2_tx_le *le = sky2->tx_le + idx;
4578 u32 a = le32_to_cpu(le->addr);
4579
4580 if (sop)
4581 seq_printf(seq, "%u:", idx);
4582 sop = 0;
4583
4584 switch (le->opcode & ~HW_OWNER) {
4585 case OP_ADDR64:
4586 seq_printf(seq, " %#x:", a);
4587 break;
4588 case OP_LRGLEN:
4589 seq_printf(seq, " mtu=%d", a);
4590 break;
4591 case OP_VLAN:
4592 seq_printf(seq, " vlan=%d", be16_to_cpu(le->length));
4593 break;
4594 case OP_TCPLISW:
4595 seq_printf(seq, " csum=%#x", a);
4596 break;
4597 case OP_LARGESEND:
4598 seq_printf(seq, " tso=%#x(%d)", a, le16_to_cpu(le->length));
4599 break;
4600 case OP_PACKET:
4601 seq_printf(seq, " %#x(%d)", a, le16_to_cpu(le->length));
4602 break;
4603 case OP_BUFFER:
4604 seq_printf(seq, " frag=%#x(%d)", a, le16_to_cpu(le->length));
4605 break;
4606 default:
4607 seq_printf(seq, " op=%#x,%#x(%d)", le->opcode,
4608 a, le16_to_cpu(le->length));
4609 }
4610
4611 if (le->ctrl & EOP) {
4612 seq_putc(seq, '\n');
4613 sop = 1;
4614 }
4615 }
4616
4617 seq_printf(seq, "\nRx ring hw get=%d put=%d last=%d\n",
4618 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_GET_IDX)),
4619 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_PUT_IDX)),
4620 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_LAST_IDX)));
4621
4622 sky2_read32(hw, B0_Y2_SP_LISR);
4623 napi_enable(&hw->napi);
4624 return 0;
4625}
4626
4627static int sky2_debug_open(struct inode *inode, struct file *file)
4628{
4629 return single_open(file, sky2_debug_show, inode->i_private);
4630}
4631
4632static const struct file_operations sky2_debug_fops = {
4633 .owner = THIS_MODULE,
4634 .open = sky2_debug_open,
4635 .read = seq_read,
4636 .llseek = seq_lseek,
4637 .release = single_release,
4638};
4639
4640/*
4641 * Use network device events to create/remove/rename
4642 * debugfs file entries
4643 */
4644static int sky2_device_event(struct notifier_block *unused,
4645 unsigned long event, void *ptr)
4646{
4647 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
4648 struct sky2_port *sky2 = netdev_priv(dev);
4649
4650 if (dev->netdev_ops->ndo_open != sky2_open || !sky2_debug)
4651 return NOTIFY_DONE;
4652
4653 switch (event) {
4654 case NETDEV_CHANGENAME:
4655 if (sky2->debugfs) {
4656 sky2->debugfs = debugfs_rename(sky2_debug, sky2->debugfs,
4657 sky2_debug, dev->name);
4658 }
4659 break;
4660
4661 case NETDEV_GOING_DOWN:
4662 if (sky2->debugfs) {
4663 netdev_printk(KERN_DEBUG, dev, "remove debugfs\n");
4664 debugfs_remove(sky2->debugfs);
4665 sky2->debugfs = NULL;
4666 }
4667 break;
4668
4669 case NETDEV_UP:
4670 sky2->debugfs = debugfs_create_file(dev->name, 0444,
4671 sky2_debug, dev,
4672 &sky2_debug_fops);
4673 if (IS_ERR(sky2->debugfs))
4674 sky2->debugfs = NULL;
4675 }
4676
4677 return NOTIFY_DONE;
4678}
4679
4680static struct notifier_block sky2_notifier = {
4681 .notifier_call = sky2_device_event,
4682};
4683
4684
4685static __init void sky2_debug_init(void)
4686{
4687 struct dentry *ent;
4688
4689 ent = debugfs_create_dir("sky2", NULL);
4690 if (!ent || IS_ERR(ent))
4691 return;
4692
4693 sky2_debug = ent;
4694 register_netdevice_notifier(&sky2_notifier);
4695}
4696
4697static __exit void sky2_debug_cleanup(void)
4698{
4699 if (sky2_debug) {
4700 unregister_netdevice_notifier(&sky2_notifier);
4701 debugfs_remove(sky2_debug);
4702 sky2_debug = NULL;
4703 }
4704}
4705
4706#else
4707#define sky2_debug_init()
4708#define sky2_debug_cleanup()
4709#endif
4710
4711/* Two copies of network device operations to handle special case of
4712 not allowing netpoll on second port */
4713static const struct net_device_ops sky2_netdev_ops[2] = {
4714 {
4715 .ndo_open = sky2_open,
4716 .ndo_stop = sky2_close,
4717 .ndo_start_xmit = sky2_xmit_frame,
4718 .ndo_do_ioctl = sky2_ioctl,
4719 .ndo_validate_addr = eth_validate_addr,
4720 .ndo_set_mac_address = sky2_set_mac_address,
4721 .ndo_set_rx_mode = sky2_set_multicast,
4722 .ndo_change_mtu = sky2_change_mtu,
4723 .ndo_fix_features = sky2_fix_features,
4724 .ndo_set_features = sky2_set_features,
4725 .ndo_tx_timeout = sky2_tx_timeout,
4726 .ndo_get_stats64 = sky2_get_stats,
4727#ifdef CONFIG_NET_POLL_CONTROLLER
4728 .ndo_poll_controller = sky2_netpoll,
4729#endif
4730 },
4731 {
4732 .ndo_open = sky2_open,
4733 .ndo_stop = sky2_close,
4734 .ndo_start_xmit = sky2_xmit_frame,
4735 .ndo_do_ioctl = sky2_ioctl,
4736 .ndo_validate_addr = eth_validate_addr,
4737 .ndo_set_mac_address = sky2_set_mac_address,
4738 .ndo_set_rx_mode = sky2_set_multicast,
4739 .ndo_change_mtu = sky2_change_mtu,
4740 .ndo_fix_features = sky2_fix_features,
4741 .ndo_set_features = sky2_set_features,
4742 .ndo_tx_timeout = sky2_tx_timeout,
4743 .ndo_get_stats64 = sky2_get_stats,
4744 },
4745};
4746
4747/* Initialize network device */
4748static struct net_device *sky2_init_netdev(struct sky2_hw *hw, unsigned port,
4749 int highmem, int wol)
4750{
4751 struct sky2_port *sky2;
4752 struct net_device *dev = alloc_etherdev(sizeof(*sky2));
4753 const void *iap;
4754
4755 if (!dev)
4756 return NULL;
4757
4758 SET_NETDEV_DEV(dev, &hw->pdev->dev);
4759 dev->irq = hw->pdev->irq;
4760 dev->ethtool_ops = &sky2_ethtool_ops;
4761 dev->watchdog_timeo = TX_WATCHDOG;
4762 dev->netdev_ops = &sky2_netdev_ops[port];
4763
4764 sky2 = netdev_priv(dev);
4765 sky2->netdev = dev;
4766 sky2->hw = hw;
4767 sky2->msg_enable = netif_msg_init(debug, default_msg);
4768
4769 u64_stats_init(&sky2->tx_stats.syncp);
4770 u64_stats_init(&sky2->rx_stats.syncp);
4771
4772 /* Auto speed and flow control */
4773 sky2->flags = SKY2_FLAG_AUTO_SPEED | SKY2_FLAG_AUTO_PAUSE;
4774 if (hw->chip_id != CHIP_ID_YUKON_XL)
4775 dev->hw_features |= NETIF_F_RXCSUM;
4776
4777 sky2->flow_mode = FC_BOTH;
4778
4779 sky2->duplex = -1;
4780 sky2->speed = -1;
4781 sky2->advertising = sky2_supported_modes(hw);
4782 sky2->wol = wol;
4783
4784 spin_lock_init(&sky2->phy_lock);
4785
4786 sky2->tx_pending = TX_DEF_PENDING;
4787 sky2->tx_ring_size = roundup_ring_size(TX_DEF_PENDING);
4788 sky2->rx_pending = RX_DEF_PENDING;
4789
4790 hw->dev[port] = dev;
4791
4792 sky2->port = port;
4793
4794 dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_TSO;
4795
4796 if (highmem)
4797 dev->features |= NETIF_F_HIGHDMA;
4798
4799 /* Enable receive hashing unless hardware is known broken */
4800 if (!(hw->flags & SKY2_HW_RSS_BROKEN))
4801 dev->hw_features |= NETIF_F_RXHASH;
4802
4803 if (!(hw->flags & SKY2_HW_VLAN_BROKEN)) {
4804 dev->hw_features |= NETIF_F_HW_VLAN_CTAG_TX |
4805 NETIF_F_HW_VLAN_CTAG_RX;
4806 dev->vlan_features |= SKY2_VLAN_OFFLOADS;
4807 }
4808
4809 dev->features |= dev->hw_features;
4810
4811 /* MTU range: 60 - 1500 or 9000 */
4812 dev->min_mtu = ETH_ZLEN;
4813 if (hw->chip_id == CHIP_ID_YUKON_FE ||
4814 hw->chip_id == CHIP_ID_YUKON_FE_P)
4815 dev->max_mtu = ETH_DATA_LEN;
4816 else
4817 dev->max_mtu = ETH_JUMBO_MTU;
4818
4819 /* try to get mac address in the following order:
4820 * 1) from device tree data
4821 * 2) from internal registers set by bootloader
4822 */
4823 iap = of_get_mac_address(hw->pdev->dev.of_node);
4824 if (iap)
4825 memcpy(dev->dev_addr, iap, ETH_ALEN);
4826 else
4827 memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8,
4828 ETH_ALEN);
4829
4830 /* if the address is invalid, use a random value */
4831 if (!is_valid_ether_addr(dev->dev_addr)) {
4832 struct sockaddr sa = { AF_UNSPEC };
4833
4834 netdev_warn(dev,
4835 "Invalid MAC address, defaulting to random\n");
4836 eth_hw_addr_random(dev);
4837 memcpy(sa.sa_data, dev->dev_addr, ETH_ALEN);
4838 if (sky2_set_mac_address(dev, &sa))
4839 netdev_warn(dev, "Failed to set MAC address.\n");
4840 }
4841
4842 return dev;
4843}
4844
4845static void sky2_show_addr(struct net_device *dev)
4846{
4847 const struct sky2_port *sky2 = netdev_priv(dev);
4848
4849 netif_info(sky2, probe, dev, "addr %pM\n", dev->dev_addr);
4850}
4851
4852/* Handle software interrupt used during MSI test */
4853static irqreturn_t sky2_test_intr(int irq, void *dev_id)
4854{
4855 struct sky2_hw *hw = dev_id;
4856 u32 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
4857
4858 if (status == 0)
4859 return IRQ_NONE;
4860
4861 if (status & Y2_IS_IRQ_SW) {
4862 hw->flags |= SKY2_HW_USE_MSI;
4863 wake_up(&hw->msi_wait);
4864 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4865 }
4866 sky2_write32(hw, B0_Y2_SP_ICR, 2);
4867
4868 return IRQ_HANDLED;
4869}
4870
4871/* Test interrupt path by forcing a a software IRQ */
4872static int sky2_test_msi(struct sky2_hw *hw)
4873{
4874 struct pci_dev *pdev = hw->pdev;
4875 int err;
4876
4877 init_waitqueue_head(&hw->msi_wait);
4878
4879 err = request_irq(pdev->irq, sky2_test_intr, 0, DRV_NAME, hw);
4880 if (err) {
4881 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
4882 return err;
4883 }
4884
4885 sky2_write32(hw, B0_IMSK, Y2_IS_IRQ_SW);
4886
4887 sky2_write8(hw, B0_CTST, CS_ST_SW_IRQ);
4888 sky2_read8(hw, B0_CTST);
4889
4890 wait_event_timeout(hw->msi_wait, (hw->flags & SKY2_HW_USE_MSI), HZ/10);
4891
4892 if (!(hw->flags & SKY2_HW_USE_MSI)) {
4893 /* MSI test failed, go back to INTx mode */
4894 dev_info(&pdev->dev, "No interrupt generated using MSI, "
4895 "switching to INTx mode.\n");
4896
4897 err = -EOPNOTSUPP;
4898 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4899 }
4900
4901 sky2_write32(hw, B0_IMSK, 0);
4902 sky2_read32(hw, B0_IMSK);
4903
4904 free_irq(pdev->irq, hw);
4905
4906 return err;
4907}
4908
4909/* This driver supports yukon2 chipset only */
4910static const char *sky2_name(u8 chipid, char *buf, int sz)
4911{
4912 const char *name[] = {
4913 "XL", /* 0xb3 */
4914 "EC Ultra", /* 0xb4 */
4915 "Extreme", /* 0xb5 */
4916 "EC", /* 0xb6 */
4917 "FE", /* 0xb7 */
4918 "FE+", /* 0xb8 */
4919 "Supreme", /* 0xb9 */
4920 "UL 2", /* 0xba */
4921 "Unknown", /* 0xbb */
4922 "Optima", /* 0xbc */
4923 "OptimaEEE", /* 0xbd */
4924 "Optima 2", /* 0xbe */
4925 };
4926
4927 if (chipid >= CHIP_ID_YUKON_XL && chipid <= CHIP_ID_YUKON_OP_2)
4928 strncpy(buf, name[chipid - CHIP_ID_YUKON_XL], sz);
4929 else
4930 snprintf(buf, sz, "(chip %#x)", chipid);
4931 return buf;
4932}
4933
4934static int sky2_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4935{
4936 struct net_device *dev, *dev1;
4937 struct sky2_hw *hw;
4938 int err, using_dac = 0, wol_default;
4939 u32 reg;
4940 char buf1[16];
4941
4942 err = pci_enable_device(pdev);
4943 if (err) {
4944 dev_err(&pdev->dev, "cannot enable PCI device\n");
4945 goto err_out;
4946 }
4947
4948 /* Get configuration information
4949 * Note: only regular PCI config access once to test for HW issues
4950 * other PCI access through shared memory for speed and to
4951 * avoid MMCONFIG problems.
4952 */
4953 err = pci_read_config_dword(pdev, PCI_DEV_REG2, ®);
4954 if (err) {
4955 dev_err(&pdev->dev, "PCI read config failed\n");
4956 goto err_out_disable;
4957 }
4958
4959 if (~reg == 0) {
4960 dev_err(&pdev->dev, "PCI configuration read error\n");
4961 err = -EIO;
4962 goto err_out_disable;
4963 }
4964
4965 err = pci_request_regions(pdev, DRV_NAME);
4966 if (err) {
4967 dev_err(&pdev->dev, "cannot obtain PCI resources\n");
4968 goto err_out_disable;
4969 }
4970
4971 pci_set_master(pdev);
4972
4973 if (sizeof(dma_addr_t) > sizeof(u32) &&
4974 !(err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))) {
4975 using_dac = 1;
4976 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
4977 if (err < 0) {
4978 dev_err(&pdev->dev, "unable to obtain 64 bit DMA "
4979 "for consistent allocations\n");
4980 goto err_out_free_regions;
4981 }
4982 } else {
4983 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4984 if (err) {
4985 dev_err(&pdev->dev, "no usable DMA configuration\n");
4986 goto err_out_free_regions;
4987 }
4988 }
4989
4990
4991#ifdef __BIG_ENDIAN
4992 /* The sk98lin vendor driver uses hardware byte swapping but
4993 * this driver uses software swapping.
4994 */
4995 reg &= ~PCI_REV_DESC;
4996 err = pci_write_config_dword(pdev, PCI_DEV_REG2, reg);
4997 if (err) {
4998 dev_err(&pdev->dev, "PCI write config failed\n");
4999 goto err_out_free_regions;
5000 }
5001#endif
5002
5003 wol_default = device_may_wakeup(&pdev->dev) ? WAKE_MAGIC : 0;
5004
5005 err = -ENOMEM;
5006
5007 hw = kzalloc(sizeof(*hw) + strlen(DRV_NAME "@pci:")
5008 + strlen(pci_name(pdev)) + 1, GFP_KERNEL);
5009 if (!hw)
5010 goto err_out_free_regions;
5011
5012 hw->pdev = pdev;
5013 sprintf(hw->irq_name, DRV_NAME "@pci:%s", pci_name(pdev));
5014
5015 hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
5016 if (!hw->regs) {
5017 dev_err(&pdev->dev, "cannot map device registers\n");
5018 goto err_out_free_hw;
5019 }
5020
5021 err = sky2_init(hw);
5022 if (err)
5023 goto err_out_iounmap;
5024
5025 /* ring for status responses */
5026 hw->st_size = hw->ports * roundup_pow_of_two(3*RX_MAX_PENDING + TX_MAX_PENDING);
5027 hw->st_le = pci_alloc_consistent(pdev, hw->st_size * sizeof(struct sky2_status_le),
5028 &hw->st_dma);
5029 if (!hw->st_le) {
5030 err = -ENOMEM;
5031 goto err_out_reset;
5032 }
5033
5034 dev_info(&pdev->dev, "Yukon-2 %s chip revision %d\n",
5035 sky2_name(hw->chip_id, buf1, sizeof(buf1)), hw->chip_rev);
5036
5037 sky2_reset(hw);
5038
5039 dev = sky2_init_netdev(hw, 0, using_dac, wol_default);
5040 if (!dev) {
5041 err = -ENOMEM;
5042 goto err_out_free_pci;
5043 }
5044
5045 if (!disable_msi && pci_enable_msi(pdev) == 0) {
5046 err = sky2_test_msi(hw);
5047 if (err) {
5048 pci_disable_msi(pdev);
5049 if (err != -EOPNOTSUPP)
5050 goto err_out_free_netdev;
5051 }
5052 }
5053
5054 netif_napi_add(dev, &hw->napi, sky2_poll, NAPI_WEIGHT);
5055
5056 err = register_netdev(dev);
5057 if (err) {
5058 dev_err(&pdev->dev, "cannot register net device\n");
5059 goto err_out_free_netdev;
5060 }
5061
5062 netif_carrier_off(dev);
5063
5064 sky2_show_addr(dev);
5065
5066 if (hw->ports > 1) {
5067 dev1 = sky2_init_netdev(hw, 1, using_dac, wol_default);
5068 if (!dev1) {
5069 err = -ENOMEM;
5070 goto err_out_unregister;
5071 }
5072
5073 err = register_netdev(dev1);
5074 if (err) {
5075 dev_err(&pdev->dev, "cannot register second net device\n");
5076 goto err_out_free_dev1;
5077 }
5078
5079 err = sky2_setup_irq(hw, hw->irq_name);
5080 if (err)
5081 goto err_out_unregister_dev1;
5082
5083 sky2_show_addr(dev1);
5084 }
5085
5086 timer_setup(&hw->watchdog_timer, sky2_watchdog, 0);
5087 INIT_WORK(&hw->restart_work, sky2_restart);
5088
5089 pci_set_drvdata(pdev, hw);
5090 pdev->d3_delay = 200;
5091
5092 return 0;
5093
5094err_out_unregister_dev1:
5095 unregister_netdev(dev1);
5096err_out_free_dev1:
5097 free_netdev(dev1);
5098err_out_unregister:
5099 unregister_netdev(dev);
5100err_out_free_netdev:
5101 if (hw->flags & SKY2_HW_USE_MSI)
5102 pci_disable_msi(pdev);
5103 free_netdev(dev);
5104err_out_free_pci:
5105 pci_free_consistent(pdev, hw->st_size * sizeof(struct sky2_status_le),
5106 hw->st_le, hw->st_dma);
5107err_out_reset:
5108 sky2_write8(hw, B0_CTST, CS_RST_SET);
5109err_out_iounmap:
5110 iounmap(hw->regs);
5111err_out_free_hw:
5112 kfree(hw);
5113err_out_free_regions:
5114 pci_release_regions(pdev);
5115err_out_disable:
5116 pci_disable_device(pdev);
5117err_out:
5118 return err;
5119}
5120
5121static void sky2_remove(struct pci_dev *pdev)
5122{
5123 struct sky2_hw *hw = pci_get_drvdata(pdev);
5124 int i;
5125
5126 if (!hw)
5127 return;
5128
5129 del_timer_sync(&hw->watchdog_timer);
5130 cancel_work_sync(&hw->restart_work);
5131
5132 for (i = hw->ports-1; i >= 0; --i)
5133 unregister_netdev(hw->dev[i]);
5134
5135 sky2_write32(hw, B0_IMSK, 0);
5136 sky2_read32(hw, B0_IMSK);
5137
5138 sky2_power_aux(hw);
5139
5140 sky2_write8(hw, B0_CTST, CS_RST_SET);
5141 sky2_read8(hw, B0_CTST);
5142
5143 if (hw->ports > 1) {
5144 napi_disable(&hw->napi);
5145 free_irq(pdev->irq, hw);
5146 }
5147
5148 if (hw->flags & SKY2_HW_USE_MSI)
5149 pci_disable_msi(pdev);
5150 pci_free_consistent(pdev, hw->st_size * sizeof(struct sky2_status_le),
5151 hw->st_le, hw->st_dma);
5152 pci_release_regions(pdev);
5153 pci_disable_device(pdev);
5154
5155 for (i = hw->ports-1; i >= 0; --i)
5156 free_netdev(hw->dev[i]);
5157
5158 iounmap(hw->regs);
5159 kfree(hw);
5160}
5161
5162static int sky2_suspend(struct device *dev)
5163{
5164 struct pci_dev *pdev = to_pci_dev(dev);
5165 struct sky2_hw *hw = pci_get_drvdata(pdev);
5166 int i;
5167
5168 if (!hw)
5169 return 0;
5170
5171 del_timer_sync(&hw->watchdog_timer);
5172 cancel_work_sync(&hw->restart_work);
5173
5174 rtnl_lock();
5175
5176 sky2_all_down(hw);
5177 for (i = 0; i < hw->ports; i++) {
5178 struct net_device *dev = hw->dev[i];
5179 struct sky2_port *sky2 = netdev_priv(dev);
5180
5181 if (sky2->wol)
5182 sky2_wol_init(sky2);
5183 }
5184
5185 sky2_power_aux(hw);
5186 rtnl_unlock();
5187
5188 return 0;
5189}
5190
5191#ifdef CONFIG_PM_SLEEP
5192static int sky2_resume(struct device *dev)
5193{
5194 struct pci_dev *pdev = to_pci_dev(dev);
5195 struct sky2_hw *hw = pci_get_drvdata(pdev);
5196 int err;
5197
5198 if (!hw)
5199 return 0;
5200
5201 /* Re-enable all clocks */
5202 err = pci_write_config_dword(pdev, PCI_DEV_REG3, 0);
5203 if (err) {
5204 dev_err(&pdev->dev, "PCI write config failed\n");
5205 goto out;
5206 }
5207
5208 rtnl_lock();
5209 sky2_reset(hw);
5210 sky2_all_up(hw);
5211 rtnl_unlock();
5212
5213 return 0;
5214out:
5215
5216 dev_err(&pdev->dev, "resume failed (%d)\n", err);
5217 pci_disable_device(pdev);
5218 return err;
5219}
5220
5221static SIMPLE_DEV_PM_OPS(sky2_pm_ops, sky2_suspend, sky2_resume);
5222#define SKY2_PM_OPS (&sky2_pm_ops)
5223
5224#else
5225
5226#define SKY2_PM_OPS NULL
5227#endif
5228
5229static void sky2_shutdown(struct pci_dev *pdev)
5230{
5231 struct sky2_hw *hw = pci_get_drvdata(pdev);
5232 int port;
5233
5234 for (port = 0; port < hw->ports; port++) {
5235 struct net_device *ndev = hw->dev[port];
5236
5237 rtnl_lock();
5238 if (netif_running(ndev)) {
5239 dev_close(ndev);
5240 netif_device_detach(ndev);
5241 }
5242 rtnl_unlock();
5243 }
5244 sky2_suspend(&pdev->dev);
5245 pci_wake_from_d3(pdev, device_may_wakeup(&pdev->dev));
5246 pci_set_power_state(pdev, PCI_D3hot);
5247}
5248
5249static struct pci_driver sky2_driver = {
5250 .name = DRV_NAME,
5251 .id_table = sky2_id_table,
5252 .probe = sky2_probe,
5253 .remove = sky2_remove,
5254 .shutdown = sky2_shutdown,
5255 .driver.pm = SKY2_PM_OPS,
5256};
5257
5258static int __init sky2_init_module(void)
5259{
5260 pr_info("driver version " DRV_VERSION "\n");
5261
5262 sky2_debug_init();
5263 return pci_register_driver(&sky2_driver);
5264}
5265
5266static void __exit sky2_cleanup_module(void)
5267{
5268 pci_unregister_driver(&sky2_driver);
5269 sky2_debug_cleanup();
5270}
5271
5272module_init(sky2_init_module);
5273module_exit(sky2_cleanup_module);
5274
5275MODULE_DESCRIPTION("Marvell Yukon 2 Gigabit Ethernet driver");
5276MODULE_AUTHOR("Stephen Hemminger <shemminger@linux-foundation.org>");
5277MODULE_LICENSE("GPL");
5278MODULE_VERSION(DRV_VERSION);
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * New driver for Marvell Yukon 2 chipset.
4 * Based on earlier sk98lin, and skge driver.
5 *
6 * This driver intentionally does not support all the features
7 * of the original driver such as link fail-over and link management because
8 * those should be done at higher levels.
9 *
10 * Copyright (C) 2005 Stephen Hemminger <shemminger@osdl.org>
11 */
12
13#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
14
15#include <linux/crc32.h>
16#include <linux/kernel.h>
17#include <linux/module.h>
18#include <linux/netdevice.h>
19#include <linux/dma-mapping.h>
20#include <linux/etherdevice.h>
21#include <linux/ethtool.h>
22#include <linux/pci.h>
23#include <linux/interrupt.h>
24#include <linux/ip.h>
25#include <linux/slab.h>
26#include <net/ip.h>
27#include <linux/tcp.h>
28#include <linux/in.h>
29#include <linux/delay.h>
30#include <linux/workqueue.h>
31#include <linux/if_vlan.h>
32#include <linux/prefetch.h>
33#include <linux/debugfs.h>
34#include <linux/mii.h>
35#include <linux/of_device.h>
36#include <linux/of_net.h>
37#include <linux/dmi.h>
38
39#include <asm/irq.h>
40
41#include "sky2.h"
42
43#define DRV_NAME "sky2"
44#define DRV_VERSION "1.30"
45
46/*
47 * The Yukon II chipset takes 64 bit command blocks (called list elements)
48 * that are organized into three (receive, transmit, status) different rings
49 * similar to Tigon3.
50 */
51
52#define RX_LE_SIZE 1024
53#define RX_LE_BYTES (RX_LE_SIZE*sizeof(struct sky2_rx_le))
54#define RX_MAX_PENDING (RX_LE_SIZE/6 - 2)
55#define RX_DEF_PENDING RX_MAX_PENDING
56
57/* This is the worst case number of transmit list elements for a single skb:
58 * VLAN:GSO + CKSUM + Data + skb_frags * DMA
59 */
60#define MAX_SKB_TX_LE (2 + (sizeof(dma_addr_t)/sizeof(u32))*(MAX_SKB_FRAGS+1))
61#define TX_MIN_PENDING (MAX_SKB_TX_LE+1)
62#define TX_MAX_PENDING 1024
63#define TX_DEF_PENDING 63
64
65#define TX_WATCHDOG (5 * HZ)
66#define PHY_RETRIES 1000
67
68#define SKY2_EEPROM_MAGIC 0x9955aabb
69
70#define RING_NEXT(x, s) (((x)+1) & ((s)-1))
71
72static const u32 default_msg =
73 NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK
74 | NETIF_MSG_TIMER | NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR
75 | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN;
76
77static int debug = -1; /* defaults above */
78module_param(debug, int, 0);
79MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
80
81static int copybreak __read_mostly = 128;
82module_param(copybreak, int, 0);
83MODULE_PARM_DESC(copybreak, "Receive copy threshold");
84
85static int disable_msi = -1;
86module_param(disable_msi, int, 0);
87MODULE_PARM_DESC(disable_msi, "Disable Message Signaled Interrupt (MSI)");
88
89static int legacy_pme = 0;
90module_param(legacy_pme, int, 0);
91MODULE_PARM_DESC(legacy_pme, "Legacy power management");
92
93static const struct pci_device_id sky2_id_table[] = {
94 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9000) }, /* SK-9Sxx */
95 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E00) }, /* SK-9Exx */
96 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E01) }, /* SK-9E21M */
97 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4b00) }, /* DGE-560T */
98 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4001) }, /* DGE-550SX */
99 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B02) }, /* DGE-560SX */
100 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B03) }, /* DGE-550T */
101 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4340) }, /* 88E8021 */
102 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4341) }, /* 88E8022 */
103 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4342) }, /* 88E8061 */
104 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4343) }, /* 88E8062 */
105 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4344) }, /* 88E8021 */
106 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4345) }, /* 88E8022 */
107 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4346) }, /* 88E8061 */
108 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4347) }, /* 88E8062 */
109 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4350) }, /* 88E8035 */
110 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4351) }, /* 88E8036 */
111 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4352) }, /* 88E8038 */
112 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4353) }, /* 88E8039 */
113 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4354) }, /* 88E8040 */
114 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4355) }, /* 88E8040T */
115 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4356) }, /* 88EC033 */
116 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4357) }, /* 88E8042 */
117 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x435A) }, /* 88E8048 */
118 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4360) }, /* 88E8052 */
119 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4361) }, /* 88E8050 */
120 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4362) }, /* 88E8053 */
121 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4363) }, /* 88E8055 */
122 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4364) }, /* 88E8056 */
123 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4365) }, /* 88E8070 */
124 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4366) }, /* 88EC036 */
125 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4367) }, /* 88EC032 */
126 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4368) }, /* 88EC034 */
127 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4369) }, /* 88EC042 */
128 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436A) }, /* 88E8058 */
129 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436B) }, /* 88E8071 */
130 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436C) }, /* 88E8072 */
131 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436D) }, /* 88E8055 */
132 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4370) }, /* 88E8075 */
133 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4380) }, /* 88E8057 */
134 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4381) }, /* 88E8059 */
135 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4382) }, /* 88E8079 */
136 { 0 }
137};
138
139MODULE_DEVICE_TABLE(pci, sky2_id_table);
140
141/* Avoid conditionals by using array */
142static const unsigned txqaddr[] = { Q_XA1, Q_XA2 };
143static const unsigned rxqaddr[] = { Q_R1, Q_R2 };
144static const u32 portirq_msk[] = { Y2_IS_PORT_1, Y2_IS_PORT_2 };
145
146static void sky2_set_multicast(struct net_device *dev);
147static irqreturn_t sky2_intr(int irq, void *dev_id);
148
149/* Access to PHY via serial interconnect */
150static int gm_phy_write(struct sky2_hw *hw, unsigned port, u16 reg, u16 val)
151{
152 int i;
153
154 gma_write16(hw, port, GM_SMI_DATA, val);
155 gma_write16(hw, port, GM_SMI_CTRL,
156 GM_SMI_CT_PHY_AD(PHY_ADDR_MARV) | GM_SMI_CT_REG_AD(reg));
157
158 for (i = 0; i < PHY_RETRIES; i++) {
159 u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL);
160 if (ctrl == 0xffff)
161 goto io_error;
162
163 if (!(ctrl & GM_SMI_CT_BUSY))
164 return 0;
165
166 udelay(10);
167 }
168
169 dev_warn(&hw->pdev->dev, "%s: phy write timeout\n", hw->dev[port]->name);
170 return -ETIMEDOUT;
171
172io_error:
173 dev_err(&hw->pdev->dev, "%s: phy I/O error\n", hw->dev[port]->name);
174 return -EIO;
175}
176
177static int __gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg, u16 *val)
178{
179 int i;
180
181 gma_write16(hw, port, GM_SMI_CTRL, GM_SMI_CT_PHY_AD(PHY_ADDR_MARV)
182 | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
183
184 for (i = 0; i < PHY_RETRIES; i++) {
185 u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL);
186 if (ctrl == 0xffff)
187 goto io_error;
188
189 if (ctrl & GM_SMI_CT_RD_VAL) {
190 *val = gma_read16(hw, port, GM_SMI_DATA);
191 return 0;
192 }
193
194 udelay(10);
195 }
196
197 dev_warn(&hw->pdev->dev, "%s: phy read timeout\n", hw->dev[port]->name);
198 return -ETIMEDOUT;
199io_error:
200 dev_err(&hw->pdev->dev, "%s: phy I/O error\n", hw->dev[port]->name);
201 return -EIO;
202}
203
204static inline u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg)
205{
206 u16 v = 0;
207 __gm_phy_read(hw, port, reg, &v);
208 return v;
209}
210
211
212static void sky2_power_on(struct sky2_hw *hw)
213{
214 /* switch power to VCC (WA for VAUX problem) */
215 sky2_write8(hw, B0_POWER_CTRL,
216 PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON);
217
218 /* disable Core Clock Division, */
219 sky2_write32(hw, B2_Y2_CLK_CTRL, Y2_CLK_DIV_DIS);
220
221 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > CHIP_REV_YU_XL_A1)
222 /* enable bits are inverted */
223 sky2_write8(hw, B2_Y2_CLK_GATE,
224 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
225 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
226 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
227 else
228 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
229
230 if (hw->flags & SKY2_HW_ADV_POWER_CTL) {
231 u32 reg;
232
233 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
234
235 reg = sky2_pci_read32(hw, PCI_DEV_REG4);
236 /* set all bits to 0 except bits 15..12 and 8 */
237 reg &= P_ASPM_CONTROL_MSK;
238 sky2_pci_write32(hw, PCI_DEV_REG4, reg);
239
240 reg = sky2_pci_read32(hw, PCI_DEV_REG5);
241 /* set all bits to 0 except bits 28 & 27 */
242 reg &= P_CTL_TIM_VMAIN_AV_MSK;
243 sky2_pci_write32(hw, PCI_DEV_REG5, reg);
244
245 sky2_pci_write32(hw, PCI_CFG_REG_1, 0);
246
247 sky2_write16(hw, B0_CTST, Y2_HW_WOL_ON);
248
249 /* Enable workaround for dev 4.107 on Yukon-Ultra & Extreme */
250 reg = sky2_read32(hw, B2_GP_IO);
251 reg |= GLB_GPIO_STAT_RACE_DIS;
252 sky2_write32(hw, B2_GP_IO, reg);
253
254 sky2_read32(hw, B2_GP_IO);
255 }
256
257 /* Turn on "driver loaded" LED */
258 sky2_write16(hw, B0_CTST, Y2_LED_STAT_ON);
259}
260
261static void sky2_power_aux(struct sky2_hw *hw)
262{
263 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > CHIP_REV_YU_XL_A1)
264 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
265 else
266 /* enable bits are inverted */
267 sky2_write8(hw, B2_Y2_CLK_GATE,
268 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
269 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
270 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
271
272 /* switch power to VAUX if supported and PME from D3cold */
273 if ( (sky2_read32(hw, B0_CTST) & Y2_VAUX_AVAIL) &&
274 pci_pme_capable(hw->pdev, PCI_D3cold))
275 sky2_write8(hw, B0_POWER_CTRL,
276 (PC_VAUX_ENA | PC_VCC_ENA |
277 PC_VAUX_ON | PC_VCC_OFF));
278
279 /* turn off "driver loaded LED" */
280 sky2_write16(hw, B0_CTST, Y2_LED_STAT_OFF);
281}
282
283static void sky2_gmac_reset(struct sky2_hw *hw, unsigned port)
284{
285 u16 reg;
286
287 /* disable all GMAC IRQ's */
288 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
289
290 gma_write16(hw, port, GM_MC_ADDR_H1, 0); /* clear MC hash */
291 gma_write16(hw, port, GM_MC_ADDR_H2, 0);
292 gma_write16(hw, port, GM_MC_ADDR_H3, 0);
293 gma_write16(hw, port, GM_MC_ADDR_H4, 0);
294
295 reg = gma_read16(hw, port, GM_RX_CTRL);
296 reg |= GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA;
297 gma_write16(hw, port, GM_RX_CTRL, reg);
298}
299
300/* flow control to advertise bits */
301static const u16 copper_fc_adv[] = {
302 [FC_NONE] = 0,
303 [FC_TX] = PHY_M_AN_ASP,
304 [FC_RX] = PHY_M_AN_PC,
305 [FC_BOTH] = PHY_M_AN_PC | PHY_M_AN_ASP,
306};
307
308/* flow control to advertise bits when using 1000BaseX */
309static const u16 fiber_fc_adv[] = {
310 [FC_NONE] = PHY_M_P_NO_PAUSE_X,
311 [FC_TX] = PHY_M_P_ASYM_MD_X,
312 [FC_RX] = PHY_M_P_SYM_MD_X,
313 [FC_BOTH] = PHY_M_P_BOTH_MD_X,
314};
315
316/* flow control to GMA disable bits */
317static const u16 gm_fc_disable[] = {
318 [FC_NONE] = GM_GPCR_FC_RX_DIS | GM_GPCR_FC_TX_DIS,
319 [FC_TX] = GM_GPCR_FC_RX_DIS,
320 [FC_RX] = GM_GPCR_FC_TX_DIS,
321 [FC_BOTH] = 0,
322};
323
324
325static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
326{
327 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
328 u16 ctrl, ct1000, adv, pg, ledctrl, ledover, reg;
329
330 if ( (sky2->flags & SKY2_FLAG_AUTO_SPEED) &&
331 !(hw->flags & SKY2_HW_NEWER_PHY)) {
332 u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
333
334 ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK |
335 PHY_M_EC_MAC_S_MSK);
336 ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);
337
338 /* on PHY 88E1040 Rev.D0 (and newer) downshift control changed */
339 if (hw->chip_id == CHIP_ID_YUKON_EC)
340 /* set downshift counter to 3x and enable downshift */
341 ectrl |= PHY_M_EC_DSC_2(2) | PHY_M_EC_DOWN_S_ENA;
342 else
343 /* set master & slave downshift counter to 1x */
344 ectrl |= PHY_M_EC_M_DSC(0) | PHY_M_EC_S_DSC(1);
345
346 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
347 }
348
349 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
350 if (sky2_is_copper(hw)) {
351 if (!(hw->flags & SKY2_HW_GIGABIT)) {
352 /* enable automatic crossover */
353 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO) >> 1;
354
355 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
356 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
357 u16 spec;
358
359 /* Enable Class A driver for FE+ A0 */
360 spec = gm_phy_read(hw, port, PHY_MARV_FE_SPEC_2);
361 spec |= PHY_M_FESC_SEL_CL_A;
362 gm_phy_write(hw, port, PHY_MARV_FE_SPEC_2, spec);
363 }
364 } else {
365 /* disable energy detect */
366 ctrl &= ~PHY_M_PC_EN_DET_MSK;
367
368 /* enable automatic crossover */
369 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO);
370
371 /* downshift on PHY 88E1112 and 88E1149 is changed */
372 if ( (sky2->flags & SKY2_FLAG_AUTO_SPEED) &&
373 (hw->flags & SKY2_HW_NEWER_PHY)) {
374 /* set downshift counter to 3x and enable downshift */
375 ctrl &= ~PHY_M_PC_DSC_MSK;
376 ctrl |= PHY_M_PC_DSC(2) | PHY_M_PC_DOWN_S_ENA;
377 }
378 }
379 } else {
380 /* workaround for deviation #4.88 (CRC errors) */
381 /* disable Automatic Crossover */
382
383 ctrl &= ~PHY_M_PC_MDIX_MSK;
384 }
385
386 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
387
388 /* special setup for PHY 88E1112 Fiber */
389 if (hw->chip_id == CHIP_ID_YUKON_XL && (hw->flags & SKY2_HW_FIBRE_PHY)) {
390 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
391
392 /* Fiber: select 1000BASE-X only mode MAC Specific Ctrl Reg. */
393 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
394 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
395 ctrl &= ~PHY_M_MAC_MD_MSK;
396 ctrl |= PHY_M_MAC_MODE_SEL(PHY_M_MAC_MD_1000BX);
397 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
398
399 if (hw->pmd_type == 'P') {
400 /* select page 1 to access Fiber registers */
401 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 1);
402
403 /* for SFP-module set SIGDET polarity to low */
404 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
405 ctrl |= PHY_M_FIB_SIGD_POL;
406 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
407 }
408
409 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
410 }
411
412 ctrl = PHY_CT_RESET;
413 ct1000 = 0;
414 adv = PHY_AN_CSMA;
415 reg = 0;
416
417 if (sky2->flags & SKY2_FLAG_AUTO_SPEED) {
418 if (sky2_is_copper(hw)) {
419 if (sky2->advertising & ADVERTISED_1000baseT_Full)
420 ct1000 |= PHY_M_1000C_AFD;
421 if (sky2->advertising & ADVERTISED_1000baseT_Half)
422 ct1000 |= PHY_M_1000C_AHD;
423 if (sky2->advertising & ADVERTISED_100baseT_Full)
424 adv |= PHY_M_AN_100_FD;
425 if (sky2->advertising & ADVERTISED_100baseT_Half)
426 adv |= PHY_M_AN_100_HD;
427 if (sky2->advertising & ADVERTISED_10baseT_Full)
428 adv |= PHY_M_AN_10_FD;
429 if (sky2->advertising & ADVERTISED_10baseT_Half)
430 adv |= PHY_M_AN_10_HD;
431
432 } else { /* special defines for FIBER (88E1040S only) */
433 if (sky2->advertising & ADVERTISED_1000baseT_Full)
434 adv |= PHY_M_AN_1000X_AFD;
435 if (sky2->advertising & ADVERTISED_1000baseT_Half)
436 adv |= PHY_M_AN_1000X_AHD;
437 }
438
439 /* Restart Auto-negotiation */
440 ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
441 } else {
442 /* forced speed/duplex settings */
443 ct1000 = PHY_M_1000C_MSE;
444
445 /* Disable auto update for duplex flow control and duplex */
446 reg |= GM_GPCR_AU_DUP_DIS | GM_GPCR_AU_SPD_DIS;
447
448 switch (sky2->speed) {
449 case SPEED_1000:
450 ctrl |= PHY_CT_SP1000;
451 reg |= GM_GPCR_SPEED_1000;
452 break;
453 case SPEED_100:
454 ctrl |= PHY_CT_SP100;
455 reg |= GM_GPCR_SPEED_100;
456 break;
457 }
458
459 if (sky2->duplex == DUPLEX_FULL) {
460 reg |= GM_GPCR_DUP_FULL;
461 ctrl |= PHY_CT_DUP_MD;
462 } else if (sky2->speed < SPEED_1000)
463 sky2->flow_mode = FC_NONE;
464 }
465
466 if (sky2->flags & SKY2_FLAG_AUTO_PAUSE) {
467 if (sky2_is_copper(hw))
468 adv |= copper_fc_adv[sky2->flow_mode];
469 else
470 adv |= fiber_fc_adv[sky2->flow_mode];
471 } else {
472 reg |= GM_GPCR_AU_FCT_DIS;
473 reg |= gm_fc_disable[sky2->flow_mode];
474
475 /* Forward pause packets to GMAC? */
476 if (sky2->flow_mode & FC_RX)
477 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
478 else
479 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
480 }
481
482 gma_write16(hw, port, GM_GP_CTRL, reg);
483
484 if (hw->flags & SKY2_HW_GIGABIT)
485 gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);
486
487 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
488 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
489
490 /* Setup Phy LED's */
491 ledctrl = PHY_M_LED_PULS_DUR(PULS_170MS);
492 ledover = 0;
493
494 switch (hw->chip_id) {
495 case CHIP_ID_YUKON_FE:
496 /* on 88E3082 these bits are at 11..9 (shifted left) */
497 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) << 1;
498
499 ctrl = gm_phy_read(hw, port, PHY_MARV_FE_LED_PAR);
500
501 /* delete ACT LED control bits */
502 ctrl &= ~PHY_M_FELP_LED1_MSK;
503 /* change ACT LED control to blink mode */
504 ctrl |= PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_ACT_BL);
505 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
506 break;
507
508 case CHIP_ID_YUKON_FE_P:
509 /* Enable Link Partner Next Page */
510 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
511 ctrl |= PHY_M_PC_ENA_LIP_NP;
512
513 /* disable Energy Detect and enable scrambler */
514 ctrl &= ~(PHY_M_PC_ENA_ENE_DT | PHY_M_PC_DIS_SCRAMB);
515 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
516
517 /* set LED2 -> ACT, LED1 -> LINK, LED0 -> SPEED */
518 ctrl = PHY_M_FELP_LED2_CTRL(LED_PAR_CTRL_ACT_BL) |
519 PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_LINK) |
520 PHY_M_FELP_LED0_CTRL(LED_PAR_CTRL_SPEED);
521
522 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
523 break;
524
525 case CHIP_ID_YUKON_XL:
526 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
527
528 /* select page 3 to access LED control register */
529 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
530
531 /* set LED Function Control register */
532 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
533 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
534 PHY_M_LEDC_INIT_CTRL(7) | /* 10 Mbps */
535 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
536 PHY_M_LEDC_STA0_CTRL(7))); /* 1000 Mbps */
537
538 /* set Polarity Control register */
539 gm_phy_write(hw, port, PHY_MARV_PHY_STAT,
540 (PHY_M_POLC_LS1_P_MIX(4) |
541 PHY_M_POLC_IS0_P_MIX(4) |
542 PHY_M_POLC_LOS_CTRL(2) |
543 PHY_M_POLC_INIT_CTRL(2) |
544 PHY_M_POLC_STA1_CTRL(2) |
545 PHY_M_POLC_STA0_CTRL(2)));
546
547 /* restore page register */
548 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
549 break;
550
551 case CHIP_ID_YUKON_EC_U:
552 case CHIP_ID_YUKON_EX:
553 case CHIP_ID_YUKON_SUPR:
554 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
555
556 /* select page 3 to access LED control register */
557 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
558
559 /* set LED Function Control register */
560 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
561 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
562 PHY_M_LEDC_INIT_CTRL(8) | /* 10 Mbps */
563 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
564 PHY_M_LEDC_STA0_CTRL(7)));/* 1000 Mbps */
565
566 /* set Blink Rate in LED Timer Control Register */
567 gm_phy_write(hw, port, PHY_MARV_INT_MASK,
568 ledctrl | PHY_M_LED_BLINK_RT(BLINK_84MS));
569 /* restore page register */
570 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
571 break;
572
573 default:
574 /* set Tx LED (LED_TX) to blink mode on Rx OR Tx activity */
575 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) | PHY_M_LEDC_TX_CTRL;
576
577 /* turn off the Rx LED (LED_RX) */
578 ledover |= PHY_M_LED_MO_RX(MO_LED_OFF);
579 }
580
581 if (hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_UL_2) {
582 /* apply fixes in PHY AFE */
583 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 255);
584
585 /* increase differential signal amplitude in 10BASE-T */
586 gm_phy_write(hw, port, 0x18, 0xaa99);
587 gm_phy_write(hw, port, 0x17, 0x2011);
588
589 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
590 /* fix for IEEE A/B Symmetry failure in 1000BASE-T */
591 gm_phy_write(hw, port, 0x18, 0xa204);
592 gm_phy_write(hw, port, 0x17, 0x2002);
593 }
594
595 /* set page register to 0 */
596 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
597 } else if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
598 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
599 /* apply workaround for integrated resistors calibration */
600 gm_phy_write(hw, port, PHY_MARV_PAGE_ADDR, 17);
601 gm_phy_write(hw, port, PHY_MARV_PAGE_DATA, 0x3f60);
602 } else if (hw->chip_id == CHIP_ID_YUKON_OPT && hw->chip_rev == 0) {
603 /* apply fixes in PHY AFE */
604 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0x00ff);
605
606 /* apply RDAC termination workaround */
607 gm_phy_write(hw, port, 24, 0x2800);
608 gm_phy_write(hw, port, 23, 0x2001);
609
610 /* set page register back to 0 */
611 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
612 } else if (hw->chip_id != CHIP_ID_YUKON_EX &&
613 hw->chip_id < CHIP_ID_YUKON_SUPR) {
614 /* no effect on Yukon-XL */
615 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
616
617 if (!(sky2->flags & SKY2_FLAG_AUTO_SPEED) ||
618 sky2->speed == SPEED_100) {
619 /* turn on 100 Mbps LED (LED_LINK100) */
620 ledover |= PHY_M_LED_MO_100(MO_LED_ON);
621 }
622
623 if (ledover)
624 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
625
626 } else if (hw->chip_id == CHIP_ID_YUKON_PRM &&
627 (sky2_read8(hw, B2_MAC_CFG) & 0xf) == 0x7) {
628 int i;
629 /* This a phy register setup workaround copied from vendor driver. */
630 static const struct {
631 u16 reg, val;
632 } eee_afe[] = {
633 { 0x156, 0x58ce },
634 { 0x153, 0x99eb },
635 { 0x141, 0x8064 },
636 /* { 0x155, 0x130b },*/
637 { 0x000, 0x0000 },
638 { 0x151, 0x8433 },
639 { 0x14b, 0x8c44 },
640 { 0x14c, 0x0f90 },
641 { 0x14f, 0x39aa },
642 /* { 0x154, 0x2f39 },*/
643 { 0x14d, 0xba33 },
644 { 0x144, 0x0048 },
645 { 0x152, 0x2010 },
646 /* { 0x158, 0x1223 },*/
647 { 0x140, 0x4444 },
648 { 0x154, 0x2f3b },
649 { 0x158, 0xb203 },
650 { 0x157, 0x2029 },
651 };
652
653 /* Start Workaround for OptimaEEE Rev.Z0 */
654 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0x00fb);
655
656 gm_phy_write(hw, port, 1, 0x4099);
657 gm_phy_write(hw, port, 3, 0x1120);
658 gm_phy_write(hw, port, 11, 0x113c);
659 gm_phy_write(hw, port, 14, 0x8100);
660 gm_phy_write(hw, port, 15, 0x112a);
661 gm_phy_write(hw, port, 17, 0x1008);
662
663 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0x00fc);
664 gm_phy_write(hw, port, 1, 0x20b0);
665
666 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0x00ff);
667
668 for (i = 0; i < ARRAY_SIZE(eee_afe); i++) {
669 /* apply AFE settings */
670 gm_phy_write(hw, port, 17, eee_afe[i].val);
671 gm_phy_write(hw, port, 16, eee_afe[i].reg | 1u<<13);
672 }
673
674 /* End Workaround for OptimaEEE */
675 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
676
677 /* Enable 10Base-Te (EEE) */
678 if (hw->chip_id >= CHIP_ID_YUKON_PRM) {
679 reg = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
680 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL,
681 reg | PHY_M_10B_TE_ENABLE);
682 }
683 }
684
685 /* Enable phy interrupt on auto-negotiation complete (or link up) */
686 if (sky2->flags & SKY2_FLAG_AUTO_SPEED)
687 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_COMPL);
688 else
689 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
690}
691
692static const u32 phy_power[] = { PCI_Y2_PHY1_POWD, PCI_Y2_PHY2_POWD };
693static const u32 coma_mode[] = { PCI_Y2_PHY1_COMA, PCI_Y2_PHY2_COMA };
694
695static void sky2_phy_power_up(struct sky2_hw *hw, unsigned port)
696{
697 u32 reg1;
698
699 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
700 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
701 reg1 &= ~phy_power[port];
702
703 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > CHIP_REV_YU_XL_A1)
704 reg1 |= coma_mode[port];
705
706 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
707 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
708 sky2_pci_read32(hw, PCI_DEV_REG1);
709
710 if (hw->chip_id == CHIP_ID_YUKON_FE)
711 gm_phy_write(hw, port, PHY_MARV_CTRL, PHY_CT_ANE);
712 else if (hw->flags & SKY2_HW_ADV_POWER_CTL)
713 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
714}
715
716static void sky2_phy_power_down(struct sky2_hw *hw, unsigned port)
717{
718 u32 reg1;
719 u16 ctrl;
720
721 /* release GPHY Control reset */
722 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
723
724 /* release GMAC reset */
725 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
726
727 if (hw->flags & SKY2_HW_NEWER_PHY) {
728 /* select page 2 to access MAC control register */
729 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
730
731 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
732 /* allow GMII Power Down */
733 ctrl &= ~PHY_M_MAC_GMIF_PUP;
734 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
735
736 /* set page register back to 0 */
737 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
738 }
739
740 /* setup General Purpose Control Register */
741 gma_write16(hw, port, GM_GP_CTRL,
742 GM_GPCR_FL_PASS | GM_GPCR_SPEED_100 |
743 GM_GPCR_AU_DUP_DIS | GM_GPCR_AU_FCT_DIS |
744 GM_GPCR_AU_SPD_DIS);
745
746 if (hw->chip_id != CHIP_ID_YUKON_EC) {
747 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
748 /* select page 2 to access MAC control register */
749 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
750
751 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
752 /* enable Power Down */
753 ctrl |= PHY_M_PC_POW_D_ENA;
754 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
755
756 /* set page register back to 0 */
757 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
758 }
759
760 /* set IEEE compatible Power Down Mode (dev. #4.99) */
761 gm_phy_write(hw, port, PHY_MARV_CTRL, PHY_CT_PDOWN);
762 }
763
764 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
765 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
766 reg1 |= phy_power[port]; /* set PHY to PowerDown/COMA Mode */
767 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
768 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
769}
770
771/* configure IPG according to used link speed */
772static void sky2_set_ipg(struct sky2_port *sky2)
773{
774 u16 reg;
775
776 reg = gma_read16(sky2->hw, sky2->port, GM_SERIAL_MODE);
777 reg &= ~GM_SMOD_IPG_MSK;
778 if (sky2->speed > SPEED_100)
779 reg |= IPG_DATA_VAL(IPG_DATA_DEF_1000);
780 else
781 reg |= IPG_DATA_VAL(IPG_DATA_DEF_10_100);
782 gma_write16(sky2->hw, sky2->port, GM_SERIAL_MODE, reg);
783}
784
785/* Enable Rx/Tx */
786static void sky2_enable_rx_tx(struct sky2_port *sky2)
787{
788 struct sky2_hw *hw = sky2->hw;
789 unsigned port = sky2->port;
790 u16 reg;
791
792 reg = gma_read16(hw, port, GM_GP_CTRL);
793 reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
794 gma_write16(hw, port, GM_GP_CTRL, reg);
795}
796
797/* Force a renegotiation */
798static void sky2_phy_reinit(struct sky2_port *sky2)
799{
800 spin_lock_bh(&sky2->phy_lock);
801 sky2_phy_init(sky2->hw, sky2->port);
802 sky2_enable_rx_tx(sky2);
803 spin_unlock_bh(&sky2->phy_lock);
804}
805
806/* Put device in state to listen for Wake On Lan */
807static void sky2_wol_init(struct sky2_port *sky2)
808{
809 struct sky2_hw *hw = sky2->hw;
810 unsigned port = sky2->port;
811 enum flow_control save_mode;
812 u16 ctrl;
813
814 /* Bring hardware out of reset */
815 sky2_write16(hw, B0_CTST, CS_RST_CLR);
816 sky2_write16(hw, SK_REG(port, GMAC_LINK_CTRL), GMLC_RST_CLR);
817
818 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
819 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
820
821 /* Force to 10/100
822 * sky2_reset will re-enable on resume
823 */
824 save_mode = sky2->flow_mode;
825 ctrl = sky2->advertising;
826
827 sky2->advertising &= ~(ADVERTISED_1000baseT_Half|ADVERTISED_1000baseT_Full);
828 sky2->flow_mode = FC_NONE;
829
830 spin_lock_bh(&sky2->phy_lock);
831 sky2_phy_power_up(hw, port);
832 sky2_phy_init(hw, port);
833 spin_unlock_bh(&sky2->phy_lock);
834
835 sky2->flow_mode = save_mode;
836 sky2->advertising = ctrl;
837
838 /* Set GMAC to no flow control and auto update for speed/duplex */
839 gma_write16(hw, port, GM_GP_CTRL,
840 GM_GPCR_FC_TX_DIS|GM_GPCR_TX_ENA|GM_GPCR_RX_ENA|
841 GM_GPCR_DUP_FULL|GM_GPCR_FC_RX_DIS|GM_GPCR_AU_FCT_DIS);
842
843 /* Set WOL address */
844 memcpy_toio(hw->regs + WOL_REGS(port, WOL_MAC_ADDR),
845 sky2->netdev->dev_addr, ETH_ALEN);
846
847 /* Turn on appropriate WOL control bits */
848 sky2_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), WOL_CTL_CLEAR_RESULT);
849 ctrl = 0;
850 if (sky2->wol & WAKE_PHY)
851 ctrl |= WOL_CTL_ENA_PME_ON_LINK_CHG|WOL_CTL_ENA_LINK_CHG_UNIT;
852 else
853 ctrl |= WOL_CTL_DIS_PME_ON_LINK_CHG|WOL_CTL_DIS_LINK_CHG_UNIT;
854
855 if (sky2->wol & WAKE_MAGIC)
856 ctrl |= WOL_CTL_ENA_PME_ON_MAGIC_PKT|WOL_CTL_ENA_MAGIC_PKT_UNIT;
857 else
858 ctrl |= WOL_CTL_DIS_PME_ON_MAGIC_PKT|WOL_CTL_DIS_MAGIC_PKT_UNIT;
859
860 ctrl |= WOL_CTL_DIS_PME_ON_PATTERN|WOL_CTL_DIS_PATTERN_UNIT;
861 sky2_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), ctrl);
862
863 /* Disable PiG firmware */
864 sky2_write16(hw, B0_CTST, Y2_HW_WOL_OFF);
865
866 /* Needed by some broken BIOSes, use PCI rather than PCI-e for WOL */
867 if (legacy_pme) {
868 u32 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
869 reg1 |= PCI_Y2_PME_LEGACY;
870 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
871 }
872
873 /* block receiver */
874 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
875 sky2_read32(hw, B0_CTST);
876}
877
878static void sky2_set_tx_stfwd(struct sky2_hw *hw, unsigned port)
879{
880 struct net_device *dev = hw->dev[port];
881
882 if ( (hw->chip_id == CHIP_ID_YUKON_EX &&
883 hw->chip_rev != CHIP_REV_YU_EX_A0) ||
884 hw->chip_id >= CHIP_ID_YUKON_FE_P) {
885 /* Yukon-Extreme B0 and further Extreme devices */
886 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_ENA);
887 } else if (dev->mtu > ETH_DATA_LEN) {
888 /* set Tx GMAC FIFO Almost Empty Threshold */
889 sky2_write32(hw, SK_REG(port, TX_GMF_AE_THR),
890 (ECU_JUMBO_WM << 16) | ECU_AE_THR);
891
892 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_DIS);
893 } else
894 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_ENA);
895}
896
897static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
898{
899 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
900 u16 reg;
901 u32 rx_reg;
902 int i;
903 const u8 *addr = hw->dev[port]->dev_addr;
904
905 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
906 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
907
908 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
909
910 if (hw->chip_id == CHIP_ID_YUKON_XL &&
911 hw->chip_rev == CHIP_REV_YU_XL_A0 &&
912 port == 1) {
913 /* WA DEV_472 -- looks like crossed wires on port 2 */
914 /* clear GMAC 1 Control reset */
915 sky2_write8(hw, SK_REG(0, GMAC_CTRL), GMC_RST_CLR);
916 do {
917 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_SET);
918 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_CLR);
919 } while (gm_phy_read(hw, 1, PHY_MARV_ID0) != PHY_MARV_ID0_VAL ||
920 gm_phy_read(hw, 1, PHY_MARV_ID1) != PHY_MARV_ID1_Y2 ||
921 gm_phy_read(hw, 1, PHY_MARV_INT_MASK) != 0);
922 }
923
924 sky2_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
925
926 /* Enable Transmit FIFO Underrun */
927 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
928
929 spin_lock_bh(&sky2->phy_lock);
930 sky2_phy_power_up(hw, port);
931 sky2_phy_init(hw, port);
932 spin_unlock_bh(&sky2->phy_lock);
933
934 /* MIB clear */
935 reg = gma_read16(hw, port, GM_PHY_ADDR);
936 gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
937
938 for (i = GM_MIB_CNT_BASE; i <= GM_MIB_CNT_END; i += 4)
939 gma_read16(hw, port, i);
940 gma_write16(hw, port, GM_PHY_ADDR, reg);
941
942 /* transmit control */
943 gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
944
945 /* receive control reg: unicast + multicast + no FCS */
946 gma_write16(hw, port, GM_RX_CTRL,
947 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
948
949 /* transmit flow control */
950 gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
951
952 /* transmit parameter */
953 gma_write16(hw, port, GM_TX_PARAM,
954 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
955 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
956 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF) |
957 TX_BACK_OFF_LIM(TX_BOF_LIM_DEF));
958
959 /* serial mode register */
960 reg = DATA_BLIND_VAL(DATA_BLIND_DEF) |
961 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF_1000);
962
963 if (hw->dev[port]->mtu > ETH_DATA_LEN)
964 reg |= GM_SMOD_JUMBO_ENA;
965
966 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
967 hw->chip_rev == CHIP_REV_YU_EC_U_B1)
968 reg |= GM_NEW_FLOW_CTRL;
969
970 gma_write16(hw, port, GM_SERIAL_MODE, reg);
971
972 /* virtual address for data */
973 gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
974
975 /* physical address: used for pause frames */
976 gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
977
978 /* ignore counter overflows */
979 gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
980 gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
981 gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
982
983 /* Configure Rx MAC FIFO */
984 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
985 rx_reg = GMF_OPER_ON | GMF_RX_F_FL_ON;
986 if (hw->chip_id == CHIP_ID_YUKON_EX ||
987 hw->chip_id == CHIP_ID_YUKON_FE_P)
988 rx_reg |= GMF_RX_OVER_ON;
989
990 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), rx_reg);
991
992 if (hw->chip_id == CHIP_ID_YUKON_XL) {
993 /* Hardware errata - clear flush mask */
994 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), 0);
995 } else {
996 /* Flush Rx MAC FIFO on any flow control or error */
997 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR);
998 }
999
1000 /* Set threshold to 0xa (64 bytes) + 1 to workaround pause bug */
1001 reg = RX_GMF_FL_THR_DEF + 1;
1002 /* Another magic mystery workaround from sk98lin */
1003 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
1004 hw->chip_rev == CHIP_REV_YU_FE2_A0)
1005 reg = 0x178;
1006 sky2_write16(hw, SK_REG(port, RX_GMF_FL_THR), reg);
1007
1008 /* Configure Tx MAC FIFO */
1009 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
1010 sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
1011
1012 /* On chips without ram buffer, pause is controlled by MAC level */
1013 if (!(hw->flags & SKY2_HW_RAM_BUFFER)) {
1014 /* Pause threshold is scaled by 8 in bytes */
1015 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
1016 hw->chip_rev == CHIP_REV_YU_FE2_A0)
1017 reg = 1568 / 8;
1018 else
1019 reg = 1024 / 8;
1020 sky2_write16(hw, SK_REG(port, RX_GMF_UP_THR), reg);
1021 sky2_write16(hw, SK_REG(port, RX_GMF_LP_THR), 768 / 8);
1022
1023 sky2_set_tx_stfwd(hw, port);
1024 }
1025
1026 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
1027 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
1028 /* disable dynamic watermark */
1029 reg = sky2_read16(hw, SK_REG(port, TX_GMF_EA));
1030 reg &= ~TX_DYN_WM_ENA;
1031 sky2_write16(hw, SK_REG(port, TX_GMF_EA), reg);
1032 }
1033}
1034
1035/* Assign Ram Buffer allocation to queue */
1036static void sky2_ramset(struct sky2_hw *hw, u16 q, u32 start, u32 space)
1037{
1038 u32 end;
1039
1040 /* convert from K bytes to qwords used for hw register */
1041 start *= 1024/8;
1042 space *= 1024/8;
1043 end = start + space - 1;
1044
1045 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
1046 sky2_write32(hw, RB_ADDR(q, RB_START), start);
1047 sky2_write32(hw, RB_ADDR(q, RB_END), end);
1048 sky2_write32(hw, RB_ADDR(q, RB_WP), start);
1049 sky2_write32(hw, RB_ADDR(q, RB_RP), start);
1050
1051 if (q == Q_R1 || q == Q_R2) {
1052 u32 tp = space - space/4;
1053
1054 /* On receive queue's set the thresholds
1055 * give receiver priority when > 3/4 full
1056 * send pause when down to 2K
1057 */
1058 sky2_write32(hw, RB_ADDR(q, RB_RX_UTHP), tp);
1059 sky2_write32(hw, RB_ADDR(q, RB_RX_LTHP), space/2);
1060
1061 tp = space - 8192/8;
1062 sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP), tp);
1063 sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP), space/4);
1064 } else {
1065 /* Enable store & forward on Tx queue's because
1066 * Tx FIFO is only 1K on Yukon
1067 */
1068 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
1069 }
1070
1071 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
1072 sky2_read8(hw, RB_ADDR(q, RB_CTRL));
1073}
1074
1075/* Setup Bus Memory Interface */
1076static void sky2_qset(struct sky2_hw *hw, u16 q)
1077{
1078 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_RESET);
1079 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_OPER_INIT);
1080 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_FIFO_OP_ON);
1081 sky2_write32(hw, Q_ADDR(q, Q_WM), BMU_WM_DEFAULT);
1082}
1083
1084/* Setup prefetch unit registers. This is the interface between
1085 * hardware and driver list elements
1086 */
1087static void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr,
1088 dma_addr_t addr, u32 last)
1089{
1090 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1091 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_CLR);
1092 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_HI), upper_32_bits(addr));
1093 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_LO), lower_32_bits(addr));
1094 sky2_write16(hw, Y2_QADDR(qaddr, PREF_UNIT_LAST_IDX), last);
1095 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_OP_ON);
1096
1097 sky2_read32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL));
1098}
1099
1100static inline struct sky2_tx_le *get_tx_le(struct sky2_port *sky2, u16 *slot)
1101{
1102 struct sky2_tx_le *le = sky2->tx_le + *slot;
1103
1104 *slot = RING_NEXT(*slot, sky2->tx_ring_size);
1105 le->ctrl = 0;
1106 return le;
1107}
1108
1109static void tx_init(struct sky2_port *sky2)
1110{
1111 struct sky2_tx_le *le;
1112
1113 sky2->tx_prod = sky2->tx_cons = 0;
1114 sky2->tx_tcpsum = 0;
1115 sky2->tx_last_mss = 0;
1116 netdev_reset_queue(sky2->netdev);
1117
1118 le = get_tx_le(sky2, &sky2->tx_prod);
1119 le->addr = 0;
1120 le->opcode = OP_ADDR64 | HW_OWNER;
1121 sky2->tx_last_upper = 0;
1122}
1123
1124/* Update chip's next pointer */
1125static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q, u16 idx)
1126{
1127 /* Make sure write' to descriptors are complete before we tell hardware */
1128 wmb();
1129 sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX), idx);
1130}
1131
1132
1133static inline struct sky2_rx_le *sky2_next_rx(struct sky2_port *sky2)
1134{
1135 struct sky2_rx_le *le = sky2->rx_le + sky2->rx_put;
1136 sky2->rx_put = RING_NEXT(sky2->rx_put, RX_LE_SIZE);
1137 le->ctrl = 0;
1138 return le;
1139}
1140
1141static unsigned sky2_get_rx_threshold(struct sky2_port *sky2)
1142{
1143 unsigned size;
1144
1145 /* Space needed for frame data + headers rounded up */
1146 size = roundup(sky2->netdev->mtu + ETH_HLEN + VLAN_HLEN, 8);
1147
1148 /* Stopping point for hardware truncation */
1149 return (size - 8) / sizeof(u32);
1150}
1151
1152static unsigned sky2_get_rx_data_size(struct sky2_port *sky2)
1153{
1154 struct rx_ring_info *re;
1155 unsigned size;
1156
1157 /* Space needed for frame data + headers rounded up */
1158 size = roundup(sky2->netdev->mtu + ETH_HLEN + VLAN_HLEN, 8);
1159
1160 sky2->rx_nfrags = size >> PAGE_SHIFT;
1161 BUG_ON(sky2->rx_nfrags > ARRAY_SIZE(re->frag_addr));
1162
1163 /* Compute residue after pages */
1164 size -= sky2->rx_nfrags << PAGE_SHIFT;
1165
1166 /* Optimize to handle small packets and headers */
1167 if (size < copybreak)
1168 size = copybreak;
1169 if (size < ETH_HLEN)
1170 size = ETH_HLEN;
1171
1172 return size;
1173}
1174
1175/* Build description to hardware for one receive segment */
1176static void sky2_rx_add(struct sky2_port *sky2, u8 op,
1177 dma_addr_t map, unsigned len)
1178{
1179 struct sky2_rx_le *le;
1180
1181 if (sizeof(dma_addr_t) > sizeof(u32)) {
1182 le = sky2_next_rx(sky2);
1183 le->addr = cpu_to_le32(upper_32_bits(map));
1184 le->opcode = OP_ADDR64 | HW_OWNER;
1185 }
1186
1187 le = sky2_next_rx(sky2);
1188 le->addr = cpu_to_le32(lower_32_bits(map));
1189 le->length = cpu_to_le16(len);
1190 le->opcode = op | HW_OWNER;
1191}
1192
1193/* Build description to hardware for one possibly fragmented skb */
1194static void sky2_rx_submit(struct sky2_port *sky2,
1195 const struct rx_ring_info *re)
1196{
1197 int i;
1198
1199 sky2_rx_add(sky2, OP_PACKET, re->data_addr, sky2->rx_data_size);
1200
1201 for (i = 0; i < skb_shinfo(re->skb)->nr_frags; i++)
1202 sky2_rx_add(sky2, OP_BUFFER, re->frag_addr[i], PAGE_SIZE);
1203}
1204
1205
1206static int sky2_rx_map_skb(struct pci_dev *pdev, struct rx_ring_info *re,
1207 unsigned size)
1208{
1209 struct sk_buff *skb = re->skb;
1210 int i;
1211
1212 re->data_addr = dma_map_single(&pdev->dev, skb->data, size,
1213 DMA_FROM_DEVICE);
1214 if (dma_mapping_error(&pdev->dev, re->data_addr))
1215 goto mapping_error;
1216
1217 dma_unmap_len_set(re, data_size, size);
1218
1219 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1220 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1221
1222 re->frag_addr[i] = skb_frag_dma_map(&pdev->dev, frag, 0,
1223 skb_frag_size(frag),
1224 DMA_FROM_DEVICE);
1225
1226 if (dma_mapping_error(&pdev->dev, re->frag_addr[i]))
1227 goto map_page_error;
1228 }
1229 return 0;
1230
1231map_page_error:
1232 while (--i >= 0) {
1233 dma_unmap_page(&pdev->dev, re->frag_addr[i],
1234 skb_frag_size(&skb_shinfo(skb)->frags[i]),
1235 DMA_FROM_DEVICE);
1236 }
1237
1238 dma_unmap_single(&pdev->dev, re->data_addr,
1239 dma_unmap_len(re, data_size), DMA_FROM_DEVICE);
1240
1241mapping_error:
1242 if (net_ratelimit())
1243 dev_warn(&pdev->dev, "%s: rx mapping error\n",
1244 skb->dev->name);
1245 return -EIO;
1246}
1247
1248static void sky2_rx_unmap_skb(struct pci_dev *pdev, struct rx_ring_info *re)
1249{
1250 struct sk_buff *skb = re->skb;
1251 int i;
1252
1253 dma_unmap_single(&pdev->dev, re->data_addr,
1254 dma_unmap_len(re, data_size), DMA_FROM_DEVICE);
1255
1256 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
1257 dma_unmap_page(&pdev->dev, re->frag_addr[i],
1258 skb_frag_size(&skb_shinfo(skb)->frags[i]),
1259 DMA_FROM_DEVICE);
1260}
1261
1262/* Tell chip where to start receive checksum.
1263 * Actually has two checksums, but set both same to avoid possible byte
1264 * order problems.
1265 */
1266static void rx_set_checksum(struct sky2_port *sky2)
1267{
1268 struct sky2_rx_le *le = sky2_next_rx(sky2);
1269
1270 le->addr = cpu_to_le32((ETH_HLEN << 16) | ETH_HLEN);
1271 le->ctrl = 0;
1272 le->opcode = OP_TCPSTART | HW_OWNER;
1273
1274 sky2_write32(sky2->hw,
1275 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
1276 (sky2->netdev->features & NETIF_F_RXCSUM)
1277 ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
1278}
1279
1280/* Enable/disable receive hash calculation (RSS) */
1281static void rx_set_rss(struct net_device *dev, netdev_features_t features)
1282{
1283 struct sky2_port *sky2 = netdev_priv(dev);
1284 struct sky2_hw *hw = sky2->hw;
1285 int i, nkeys = 4;
1286
1287 /* Supports IPv6 and other modes */
1288 if (hw->flags & SKY2_HW_NEW_LE) {
1289 nkeys = 10;
1290 sky2_write32(hw, SK_REG(sky2->port, RSS_CFG), HASH_ALL);
1291 }
1292
1293 /* Program RSS initial values */
1294 if (features & NETIF_F_RXHASH) {
1295 u32 rss_key[10];
1296
1297 netdev_rss_key_fill(rss_key, sizeof(rss_key));
1298 for (i = 0; i < nkeys; i++)
1299 sky2_write32(hw, SK_REG(sky2->port, RSS_KEY + i * 4),
1300 rss_key[i]);
1301
1302 /* Need to turn on (undocumented) flag to make hashing work */
1303 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T),
1304 RX_STFW_ENA);
1305
1306 sky2_write32(hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
1307 BMU_ENA_RX_RSS_HASH);
1308 } else
1309 sky2_write32(hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
1310 BMU_DIS_RX_RSS_HASH);
1311}
1312
1313/*
1314 * The RX Stop command will not work for Yukon-2 if the BMU does not
1315 * reach the end of packet and since we can't make sure that we have
1316 * incoming data, we must reset the BMU while it is not doing a DMA
1317 * transfer. Since it is possible that the RX path is still active,
1318 * the RX RAM buffer will be stopped first, so any possible incoming
1319 * data will not trigger a DMA. After the RAM buffer is stopped, the
1320 * BMU is polled until any DMA in progress is ended and only then it
1321 * will be reset.
1322 */
1323static void sky2_rx_stop(struct sky2_port *sky2)
1324{
1325 struct sky2_hw *hw = sky2->hw;
1326 unsigned rxq = rxqaddr[sky2->port];
1327 int i;
1328
1329 /* disable the RAM Buffer receive queue */
1330 sky2_write8(hw, RB_ADDR(rxq, RB_CTRL), RB_DIS_OP_MD);
1331
1332 for (i = 0; i < 0xffff; i++)
1333 if (sky2_read8(hw, RB_ADDR(rxq, Q_RSL))
1334 == sky2_read8(hw, RB_ADDR(rxq, Q_RL)))
1335 goto stopped;
1336
1337 netdev_warn(sky2->netdev, "receiver stop failed\n");
1338stopped:
1339 sky2_write32(hw, Q_ADDR(rxq, Q_CSR), BMU_RST_SET | BMU_FIFO_RST);
1340
1341 /* reset the Rx prefetch unit */
1342 sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1343}
1344
1345/* Clean out receive buffer area, assumes receiver hardware stopped */
1346static void sky2_rx_clean(struct sky2_port *sky2)
1347{
1348 unsigned i;
1349
1350 if (sky2->rx_le)
1351 memset(sky2->rx_le, 0, RX_LE_BYTES);
1352
1353 for (i = 0; i < sky2->rx_pending; i++) {
1354 struct rx_ring_info *re = sky2->rx_ring + i;
1355
1356 if (re->skb) {
1357 sky2_rx_unmap_skb(sky2->hw->pdev, re);
1358 kfree_skb(re->skb);
1359 re->skb = NULL;
1360 }
1361 }
1362}
1363
1364/* Basic MII support */
1365static int sky2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1366{
1367 struct mii_ioctl_data *data = if_mii(ifr);
1368 struct sky2_port *sky2 = netdev_priv(dev);
1369 struct sky2_hw *hw = sky2->hw;
1370 int err = -EOPNOTSUPP;
1371
1372 if (!netif_running(dev))
1373 return -ENODEV; /* Phy still in reset */
1374
1375 switch (cmd) {
1376 case SIOCGMIIPHY:
1377 data->phy_id = PHY_ADDR_MARV;
1378
1379 fallthrough;
1380 case SIOCGMIIREG: {
1381 u16 val = 0;
1382
1383 spin_lock_bh(&sky2->phy_lock);
1384 err = __gm_phy_read(hw, sky2->port, data->reg_num & 0x1f, &val);
1385 spin_unlock_bh(&sky2->phy_lock);
1386
1387 data->val_out = val;
1388 break;
1389 }
1390
1391 case SIOCSMIIREG:
1392 spin_lock_bh(&sky2->phy_lock);
1393 err = gm_phy_write(hw, sky2->port, data->reg_num & 0x1f,
1394 data->val_in);
1395 spin_unlock_bh(&sky2->phy_lock);
1396 break;
1397 }
1398 return err;
1399}
1400
1401#define SKY2_VLAN_OFFLOADS (NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_TSO)
1402
1403static void sky2_vlan_mode(struct net_device *dev, netdev_features_t features)
1404{
1405 struct sky2_port *sky2 = netdev_priv(dev);
1406 struct sky2_hw *hw = sky2->hw;
1407 u16 port = sky2->port;
1408
1409 if (features & NETIF_F_HW_VLAN_CTAG_RX)
1410 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1411 RX_VLAN_STRIP_ON);
1412 else
1413 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1414 RX_VLAN_STRIP_OFF);
1415
1416 if (features & NETIF_F_HW_VLAN_CTAG_TX) {
1417 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1418 TX_VLAN_TAG_ON);
1419
1420 dev->vlan_features |= SKY2_VLAN_OFFLOADS;
1421 } else {
1422 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1423 TX_VLAN_TAG_OFF);
1424
1425 /* Can't do transmit offload of vlan without hw vlan */
1426 dev->vlan_features &= ~SKY2_VLAN_OFFLOADS;
1427 }
1428}
1429
1430/* Amount of required worst case padding in rx buffer */
1431static inline unsigned sky2_rx_pad(const struct sky2_hw *hw)
1432{
1433 return (hw->flags & SKY2_HW_RAM_BUFFER) ? 8 : 2;
1434}
1435
1436/*
1437 * Allocate an skb for receiving. If the MTU is large enough
1438 * make the skb non-linear with a fragment list of pages.
1439 */
1440static struct sk_buff *sky2_rx_alloc(struct sky2_port *sky2, gfp_t gfp)
1441{
1442 struct sk_buff *skb;
1443 int i;
1444
1445 skb = __netdev_alloc_skb(sky2->netdev,
1446 sky2->rx_data_size + sky2_rx_pad(sky2->hw),
1447 gfp);
1448 if (!skb)
1449 goto nomem;
1450
1451 if (sky2->hw->flags & SKY2_HW_RAM_BUFFER) {
1452 unsigned char *start;
1453 /*
1454 * Workaround for a bug in FIFO that cause hang
1455 * if the FIFO if the receive buffer is not 64 byte aligned.
1456 * The buffer returned from netdev_alloc_skb is
1457 * aligned except if slab debugging is enabled.
1458 */
1459 start = PTR_ALIGN(skb->data, 8);
1460 skb_reserve(skb, start - skb->data);
1461 } else
1462 skb_reserve(skb, NET_IP_ALIGN);
1463
1464 for (i = 0; i < sky2->rx_nfrags; i++) {
1465 struct page *page = alloc_page(gfp);
1466
1467 if (!page)
1468 goto free_partial;
1469 skb_fill_page_desc(skb, i, page, 0, PAGE_SIZE);
1470 }
1471
1472 return skb;
1473free_partial:
1474 kfree_skb(skb);
1475nomem:
1476 return NULL;
1477}
1478
1479static inline void sky2_rx_update(struct sky2_port *sky2, unsigned rxq)
1480{
1481 sky2_put_idx(sky2->hw, rxq, sky2->rx_put);
1482}
1483
1484static int sky2_alloc_rx_skbs(struct sky2_port *sky2)
1485{
1486 struct sky2_hw *hw = sky2->hw;
1487 unsigned i;
1488
1489 sky2->rx_data_size = sky2_get_rx_data_size(sky2);
1490
1491 /* Fill Rx ring */
1492 for (i = 0; i < sky2->rx_pending; i++) {
1493 struct rx_ring_info *re = sky2->rx_ring + i;
1494
1495 re->skb = sky2_rx_alloc(sky2, GFP_KERNEL);
1496 if (!re->skb)
1497 return -ENOMEM;
1498
1499 if (sky2_rx_map_skb(hw->pdev, re, sky2->rx_data_size)) {
1500 dev_kfree_skb(re->skb);
1501 re->skb = NULL;
1502 return -ENOMEM;
1503 }
1504 }
1505 return 0;
1506}
1507
1508/*
1509 * Setup receiver buffer pool.
1510 * Normal case this ends up creating one list element for skb
1511 * in the receive ring. Worst case if using large MTU and each
1512 * allocation falls on a different 64 bit region, that results
1513 * in 6 list elements per ring entry.
1514 * One element is used for checksum enable/disable, and one
1515 * extra to avoid wrap.
1516 */
1517static void sky2_rx_start(struct sky2_port *sky2)
1518{
1519 struct sky2_hw *hw = sky2->hw;
1520 struct rx_ring_info *re;
1521 unsigned rxq = rxqaddr[sky2->port];
1522 unsigned i, thresh;
1523
1524 sky2->rx_put = sky2->rx_next = 0;
1525 sky2_qset(hw, rxq);
1526
1527 /* On PCI express lowering the watermark gives better performance */
1528 if (pci_is_pcie(hw->pdev))
1529 sky2_write32(hw, Q_ADDR(rxq, Q_WM), BMU_WM_PEX);
1530
1531 /* These chips have no ram buffer?
1532 * MAC Rx RAM Read is controlled by hardware
1533 */
1534 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
1535 hw->chip_rev > CHIP_REV_YU_EC_U_A0)
1536 sky2_write32(hw, Q_ADDR(rxq, Q_TEST), F_M_RX_RAM_DIS);
1537
1538 sky2_prefetch_init(hw, rxq, sky2->rx_le_map, RX_LE_SIZE - 1);
1539
1540 if (!(hw->flags & SKY2_HW_NEW_LE))
1541 rx_set_checksum(sky2);
1542
1543 if (!(hw->flags & SKY2_HW_RSS_BROKEN))
1544 rx_set_rss(sky2->netdev, sky2->netdev->features);
1545
1546 /* submit Rx ring */
1547 for (i = 0; i < sky2->rx_pending; i++) {
1548 re = sky2->rx_ring + i;
1549 sky2_rx_submit(sky2, re);
1550 }
1551
1552 /*
1553 * The receiver hangs if it receives frames larger than the
1554 * packet buffer. As a workaround, truncate oversize frames, but
1555 * the register is limited to 9 bits, so if you do frames > 2052
1556 * you better get the MTU right!
1557 */
1558 thresh = sky2_get_rx_threshold(sky2);
1559 if (thresh > 0x1ff)
1560 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_OFF);
1561 else {
1562 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_TR_THR), thresh);
1563 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_ON);
1564 }
1565
1566 /* Tell chip about available buffers */
1567 sky2_rx_update(sky2, rxq);
1568
1569 if (hw->chip_id == CHIP_ID_YUKON_EX ||
1570 hw->chip_id == CHIP_ID_YUKON_SUPR) {
1571 /*
1572 * Disable flushing of non ASF packets;
1573 * must be done after initializing the BMUs;
1574 * drivers without ASF support should do this too, otherwise
1575 * it may happen that they cannot run on ASF devices;
1576 * remember that the MAC FIFO isn't reset during initialization.
1577 */
1578 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_MACSEC_FLUSH_OFF);
1579 }
1580
1581 if (hw->chip_id >= CHIP_ID_YUKON_SUPR) {
1582 /* Enable RX Home Address & Routing Header checksum fix */
1583 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_FL_CTRL),
1584 RX_IPV6_SA_MOB_ENA | RX_IPV6_DA_MOB_ENA);
1585
1586 /* Enable TX Home Address & Routing Header checksum fix */
1587 sky2_write32(hw, Q_ADDR(txqaddr[sky2->port], Q_TEST),
1588 TBMU_TEST_HOME_ADD_FIX_EN | TBMU_TEST_ROUTING_ADD_FIX_EN);
1589 }
1590}
1591
1592static int sky2_alloc_buffers(struct sky2_port *sky2)
1593{
1594 struct sky2_hw *hw = sky2->hw;
1595
1596 /* must be power of 2 */
1597 sky2->tx_le = dma_alloc_coherent(&hw->pdev->dev,
1598 sky2->tx_ring_size * sizeof(struct sky2_tx_le),
1599 &sky2->tx_le_map, GFP_KERNEL);
1600 if (!sky2->tx_le)
1601 goto nomem;
1602
1603 sky2->tx_ring = kcalloc(sky2->tx_ring_size, sizeof(struct tx_ring_info),
1604 GFP_KERNEL);
1605 if (!sky2->tx_ring)
1606 goto nomem;
1607
1608 sky2->rx_le = dma_alloc_coherent(&hw->pdev->dev, RX_LE_BYTES,
1609 &sky2->rx_le_map, GFP_KERNEL);
1610 if (!sky2->rx_le)
1611 goto nomem;
1612
1613 sky2->rx_ring = kcalloc(sky2->rx_pending, sizeof(struct rx_ring_info),
1614 GFP_KERNEL);
1615 if (!sky2->rx_ring)
1616 goto nomem;
1617
1618 return sky2_alloc_rx_skbs(sky2);
1619nomem:
1620 return -ENOMEM;
1621}
1622
1623static void sky2_free_buffers(struct sky2_port *sky2)
1624{
1625 struct sky2_hw *hw = sky2->hw;
1626
1627 sky2_rx_clean(sky2);
1628
1629 if (sky2->rx_le) {
1630 dma_free_coherent(&hw->pdev->dev, RX_LE_BYTES, sky2->rx_le,
1631 sky2->rx_le_map);
1632 sky2->rx_le = NULL;
1633 }
1634 if (sky2->tx_le) {
1635 dma_free_coherent(&hw->pdev->dev,
1636 sky2->tx_ring_size * sizeof(struct sky2_tx_le),
1637 sky2->tx_le, sky2->tx_le_map);
1638 sky2->tx_le = NULL;
1639 }
1640 kfree(sky2->tx_ring);
1641 kfree(sky2->rx_ring);
1642
1643 sky2->tx_ring = NULL;
1644 sky2->rx_ring = NULL;
1645}
1646
1647static void sky2_hw_up(struct sky2_port *sky2)
1648{
1649 struct sky2_hw *hw = sky2->hw;
1650 unsigned port = sky2->port;
1651 u32 ramsize;
1652 int cap;
1653 struct net_device *otherdev = hw->dev[sky2->port^1];
1654
1655 tx_init(sky2);
1656
1657 /*
1658 * On dual port PCI-X card, there is an problem where status
1659 * can be received out of order due to split transactions
1660 */
1661 if (otherdev && netif_running(otherdev) &&
1662 (cap = pci_find_capability(hw->pdev, PCI_CAP_ID_PCIX))) {
1663 u16 cmd;
1664
1665 cmd = sky2_pci_read16(hw, cap + PCI_X_CMD);
1666 cmd &= ~PCI_X_CMD_MAX_SPLIT;
1667 sky2_pci_write16(hw, cap + PCI_X_CMD, cmd);
1668 }
1669
1670 sky2_mac_init(hw, port);
1671
1672 /* Register is number of 4K blocks on internal RAM buffer. */
1673 ramsize = sky2_read8(hw, B2_E_0) * 4;
1674 if (ramsize > 0) {
1675 u32 rxspace;
1676
1677 netdev_dbg(sky2->netdev, "ram buffer %dK\n", ramsize);
1678 if (ramsize < 16)
1679 rxspace = ramsize / 2;
1680 else
1681 rxspace = 8 + (2*(ramsize - 16))/3;
1682
1683 sky2_ramset(hw, rxqaddr[port], 0, rxspace);
1684 sky2_ramset(hw, txqaddr[port], rxspace, ramsize - rxspace);
1685
1686 /* Make sure SyncQ is disabled */
1687 sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL),
1688 RB_RST_SET);
1689 }
1690
1691 sky2_qset(hw, txqaddr[port]);
1692
1693 /* This is copied from sk98lin 10.0.5.3; no one tells me about erratta's */
1694 if (hw->chip_id == CHIP_ID_YUKON_EX && hw->chip_rev == CHIP_REV_YU_EX_B0)
1695 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_TEST), F_TX_CHK_AUTO_OFF);
1696
1697 /* Set almost empty threshold */
1698 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
1699 hw->chip_rev == CHIP_REV_YU_EC_U_A0)
1700 sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), ECU_TXFF_LEV);
1701
1702 sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
1703 sky2->tx_ring_size - 1);
1704
1705 sky2_vlan_mode(sky2->netdev, sky2->netdev->features);
1706 netdev_update_features(sky2->netdev);
1707
1708 sky2_rx_start(sky2);
1709}
1710
1711/* Setup device IRQ and enable napi to process */
1712static int sky2_setup_irq(struct sky2_hw *hw, const char *name)
1713{
1714 struct pci_dev *pdev = hw->pdev;
1715 int err;
1716
1717 err = request_irq(pdev->irq, sky2_intr,
1718 (hw->flags & SKY2_HW_USE_MSI) ? 0 : IRQF_SHARED,
1719 name, hw);
1720 if (err)
1721 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
1722 else {
1723 hw->flags |= SKY2_HW_IRQ_SETUP;
1724
1725 napi_enable(&hw->napi);
1726 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
1727 sky2_read32(hw, B0_IMSK);
1728 }
1729
1730 return err;
1731}
1732
1733
1734/* Bring up network interface. */
1735static int sky2_open(struct net_device *dev)
1736{
1737 struct sky2_port *sky2 = netdev_priv(dev);
1738 struct sky2_hw *hw = sky2->hw;
1739 unsigned port = sky2->port;
1740 u32 imask;
1741 int err;
1742
1743 netif_carrier_off(dev);
1744
1745 err = sky2_alloc_buffers(sky2);
1746 if (err)
1747 goto err_out;
1748
1749 /* With single port, IRQ is setup when device is brought up */
1750 if (hw->ports == 1 && (err = sky2_setup_irq(hw, dev->name)))
1751 goto err_out;
1752
1753 sky2_hw_up(sky2);
1754
1755 /* Enable interrupts from phy/mac for port */
1756 imask = sky2_read32(hw, B0_IMSK);
1757
1758 if (hw->chip_id == CHIP_ID_YUKON_OPT ||
1759 hw->chip_id == CHIP_ID_YUKON_PRM ||
1760 hw->chip_id == CHIP_ID_YUKON_OP_2)
1761 imask |= Y2_IS_PHY_QLNK; /* enable PHY Quick Link */
1762
1763 imask |= portirq_msk[port];
1764 sky2_write32(hw, B0_IMSK, imask);
1765 sky2_read32(hw, B0_IMSK);
1766
1767 netif_info(sky2, ifup, dev, "enabling interface\n");
1768
1769 return 0;
1770
1771err_out:
1772 sky2_free_buffers(sky2);
1773 return err;
1774}
1775
1776/* Modular subtraction in ring */
1777static inline int tx_inuse(const struct sky2_port *sky2)
1778{
1779 return (sky2->tx_prod - sky2->tx_cons) & (sky2->tx_ring_size - 1);
1780}
1781
1782/* Number of list elements available for next tx */
1783static inline int tx_avail(const struct sky2_port *sky2)
1784{
1785 return sky2->tx_pending - tx_inuse(sky2);
1786}
1787
1788/* Estimate of number of transmit list elements required */
1789static unsigned tx_le_req(const struct sk_buff *skb)
1790{
1791 unsigned count;
1792
1793 count = (skb_shinfo(skb)->nr_frags + 1)
1794 * (sizeof(dma_addr_t) / sizeof(u32));
1795
1796 if (skb_is_gso(skb))
1797 ++count;
1798 else if (sizeof(dma_addr_t) == sizeof(u32))
1799 ++count; /* possible vlan */
1800
1801 if (skb->ip_summed == CHECKSUM_PARTIAL)
1802 ++count;
1803
1804 return count;
1805}
1806
1807static void sky2_tx_unmap(struct pci_dev *pdev, struct tx_ring_info *re)
1808{
1809 if (re->flags & TX_MAP_SINGLE)
1810 dma_unmap_single(&pdev->dev, dma_unmap_addr(re, mapaddr),
1811 dma_unmap_len(re, maplen), DMA_TO_DEVICE);
1812 else if (re->flags & TX_MAP_PAGE)
1813 dma_unmap_page(&pdev->dev, dma_unmap_addr(re, mapaddr),
1814 dma_unmap_len(re, maplen), DMA_TO_DEVICE);
1815 re->flags = 0;
1816}
1817
1818/*
1819 * Put one packet in ring for transmit.
1820 * A single packet can generate multiple list elements, and
1821 * the number of ring elements will probably be less than the number
1822 * of list elements used.
1823 */
1824static netdev_tx_t sky2_xmit_frame(struct sk_buff *skb,
1825 struct net_device *dev)
1826{
1827 struct sky2_port *sky2 = netdev_priv(dev);
1828 struct sky2_hw *hw = sky2->hw;
1829 struct sky2_tx_le *le = NULL;
1830 struct tx_ring_info *re;
1831 unsigned i, len;
1832 dma_addr_t mapping;
1833 u32 upper;
1834 u16 slot;
1835 u16 mss;
1836 u8 ctrl;
1837
1838 if (unlikely(tx_avail(sky2) < tx_le_req(skb)))
1839 return NETDEV_TX_BUSY;
1840
1841 len = skb_headlen(skb);
1842 mapping = dma_map_single(&hw->pdev->dev, skb->data, len,
1843 DMA_TO_DEVICE);
1844
1845 if (dma_mapping_error(&hw->pdev->dev, mapping))
1846 goto mapping_error;
1847
1848 slot = sky2->tx_prod;
1849 netif_printk(sky2, tx_queued, KERN_DEBUG, dev,
1850 "tx queued, slot %u, len %d\n", slot, skb->len);
1851
1852 /* Send high bits if needed */
1853 upper = upper_32_bits(mapping);
1854 if (upper != sky2->tx_last_upper) {
1855 le = get_tx_le(sky2, &slot);
1856 le->addr = cpu_to_le32(upper);
1857 sky2->tx_last_upper = upper;
1858 le->opcode = OP_ADDR64 | HW_OWNER;
1859 }
1860
1861 /* Check for TCP Segmentation Offload */
1862 mss = skb_shinfo(skb)->gso_size;
1863 if (mss != 0) {
1864
1865 if (!(hw->flags & SKY2_HW_NEW_LE))
1866 mss += skb_tcp_all_headers(skb);
1867
1868 if (mss != sky2->tx_last_mss) {
1869 le = get_tx_le(sky2, &slot);
1870 le->addr = cpu_to_le32(mss);
1871
1872 if (hw->flags & SKY2_HW_NEW_LE)
1873 le->opcode = OP_MSS | HW_OWNER;
1874 else
1875 le->opcode = OP_LRGLEN | HW_OWNER;
1876 sky2->tx_last_mss = mss;
1877 }
1878 }
1879
1880 ctrl = 0;
1881
1882 /* Add VLAN tag, can piggyback on LRGLEN or ADDR64 */
1883 if (skb_vlan_tag_present(skb)) {
1884 if (!le) {
1885 le = get_tx_le(sky2, &slot);
1886 le->addr = 0;
1887 le->opcode = OP_VLAN|HW_OWNER;
1888 } else
1889 le->opcode |= OP_VLAN;
1890 le->length = cpu_to_be16(skb_vlan_tag_get(skb));
1891 ctrl |= INS_VLAN;
1892 }
1893
1894 /* Handle TCP checksum offload */
1895 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1896 /* On Yukon EX (some versions) encoding change. */
1897 if (hw->flags & SKY2_HW_AUTO_TX_SUM)
1898 ctrl |= CALSUM; /* auto checksum */
1899 else {
1900 const unsigned offset = skb_transport_offset(skb);
1901 u32 tcpsum;
1902
1903 tcpsum = offset << 16; /* sum start */
1904 tcpsum |= offset + skb->csum_offset; /* sum write */
1905
1906 ctrl |= CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
1907 if (ip_hdr(skb)->protocol == IPPROTO_UDP)
1908 ctrl |= UDPTCP;
1909
1910 if (tcpsum != sky2->tx_tcpsum) {
1911 sky2->tx_tcpsum = tcpsum;
1912
1913 le = get_tx_le(sky2, &slot);
1914 le->addr = cpu_to_le32(tcpsum);
1915 le->length = 0; /* initial checksum value */
1916 le->ctrl = 1; /* one packet */
1917 le->opcode = OP_TCPLISW | HW_OWNER;
1918 }
1919 }
1920 }
1921
1922 re = sky2->tx_ring + slot;
1923 re->flags = TX_MAP_SINGLE;
1924 dma_unmap_addr_set(re, mapaddr, mapping);
1925 dma_unmap_len_set(re, maplen, len);
1926
1927 le = get_tx_le(sky2, &slot);
1928 le->addr = cpu_to_le32(lower_32_bits(mapping));
1929 le->length = cpu_to_le16(len);
1930 le->ctrl = ctrl;
1931 le->opcode = mss ? (OP_LARGESEND | HW_OWNER) : (OP_PACKET | HW_OWNER);
1932
1933
1934 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1935 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1936
1937 mapping = skb_frag_dma_map(&hw->pdev->dev, frag, 0,
1938 skb_frag_size(frag), DMA_TO_DEVICE);
1939
1940 if (dma_mapping_error(&hw->pdev->dev, mapping))
1941 goto mapping_unwind;
1942
1943 upper = upper_32_bits(mapping);
1944 if (upper != sky2->tx_last_upper) {
1945 le = get_tx_le(sky2, &slot);
1946 le->addr = cpu_to_le32(upper);
1947 sky2->tx_last_upper = upper;
1948 le->opcode = OP_ADDR64 | HW_OWNER;
1949 }
1950
1951 re = sky2->tx_ring + slot;
1952 re->flags = TX_MAP_PAGE;
1953 dma_unmap_addr_set(re, mapaddr, mapping);
1954 dma_unmap_len_set(re, maplen, skb_frag_size(frag));
1955
1956 le = get_tx_le(sky2, &slot);
1957 le->addr = cpu_to_le32(lower_32_bits(mapping));
1958 le->length = cpu_to_le16(skb_frag_size(frag));
1959 le->ctrl = ctrl;
1960 le->opcode = OP_BUFFER | HW_OWNER;
1961 }
1962
1963 re->skb = skb;
1964 le->ctrl |= EOP;
1965
1966 sky2->tx_prod = slot;
1967
1968 if (tx_avail(sky2) <= MAX_SKB_TX_LE)
1969 netif_stop_queue(dev);
1970
1971 netdev_sent_queue(dev, skb->len);
1972 sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod);
1973
1974 return NETDEV_TX_OK;
1975
1976mapping_unwind:
1977 for (i = sky2->tx_prod; i != slot; i = RING_NEXT(i, sky2->tx_ring_size)) {
1978 re = sky2->tx_ring + i;
1979
1980 sky2_tx_unmap(hw->pdev, re);
1981 }
1982
1983mapping_error:
1984 if (net_ratelimit())
1985 dev_warn(&hw->pdev->dev, "%s: tx mapping error\n", dev->name);
1986 dev_kfree_skb_any(skb);
1987 return NETDEV_TX_OK;
1988}
1989
1990/*
1991 * Free ring elements from starting at tx_cons until "done"
1992 *
1993 * NB:
1994 * 1. The hardware will tell us about partial completion of multi-part
1995 * buffers so make sure not to free skb to early.
1996 * 2. This may run in parallel start_xmit because the it only
1997 * looks at the tail of the queue of FIFO (tx_cons), not
1998 * the head (tx_prod)
1999 */
2000static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
2001{
2002 struct net_device *dev = sky2->netdev;
2003 u16 idx;
2004 unsigned int bytes_compl = 0, pkts_compl = 0;
2005
2006 BUG_ON(done >= sky2->tx_ring_size);
2007
2008 for (idx = sky2->tx_cons; idx != done;
2009 idx = RING_NEXT(idx, sky2->tx_ring_size)) {
2010 struct tx_ring_info *re = sky2->tx_ring + idx;
2011 struct sk_buff *skb = re->skb;
2012
2013 sky2_tx_unmap(sky2->hw->pdev, re);
2014
2015 if (skb) {
2016 netif_printk(sky2, tx_done, KERN_DEBUG, dev,
2017 "tx done %u\n", idx);
2018
2019 pkts_compl++;
2020 bytes_compl += skb->len;
2021
2022 re->skb = NULL;
2023 dev_kfree_skb_any(skb);
2024
2025 sky2->tx_next = RING_NEXT(idx, sky2->tx_ring_size);
2026 }
2027 }
2028
2029 sky2->tx_cons = idx;
2030 smp_mb();
2031
2032 netdev_completed_queue(dev, pkts_compl, bytes_compl);
2033
2034 u64_stats_update_begin(&sky2->tx_stats.syncp);
2035 sky2->tx_stats.packets += pkts_compl;
2036 sky2->tx_stats.bytes += bytes_compl;
2037 u64_stats_update_end(&sky2->tx_stats.syncp);
2038}
2039
2040static void sky2_tx_reset(struct sky2_hw *hw, unsigned port)
2041{
2042 /* Disable Force Sync bit and Enable Alloc bit */
2043 sky2_write8(hw, SK_REG(port, TXA_CTRL),
2044 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
2045
2046 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
2047 sky2_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
2048 sky2_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
2049
2050 /* Reset the PCI FIFO of the async Tx queue */
2051 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR),
2052 BMU_RST_SET | BMU_FIFO_RST);
2053
2054 /* Reset the Tx prefetch units */
2055 sky2_write32(hw, Y2_QADDR(txqaddr[port], PREF_UNIT_CTRL),
2056 PREF_UNIT_RST_SET);
2057
2058 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
2059 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
2060
2061 sky2_read32(hw, B0_CTST);
2062}
2063
2064static void sky2_hw_down(struct sky2_port *sky2)
2065{
2066 struct sky2_hw *hw = sky2->hw;
2067 unsigned port = sky2->port;
2068 u16 ctrl;
2069
2070 /* Force flow control off */
2071 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
2072
2073 /* Stop transmitter */
2074 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_STOP);
2075 sky2_read32(hw, Q_ADDR(txqaddr[port], Q_CSR));
2076
2077 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
2078 RB_RST_SET | RB_DIS_OP_MD);
2079
2080 ctrl = gma_read16(hw, port, GM_GP_CTRL);
2081 ctrl &= ~(GM_GPCR_TX_ENA | GM_GPCR_RX_ENA);
2082 gma_write16(hw, port, GM_GP_CTRL, ctrl);
2083
2084 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
2085
2086 /* Workaround shared GMAC reset */
2087 if (!(hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 &&
2088 port == 0 && hw->dev[1] && netif_running(hw->dev[1])))
2089 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
2090
2091 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
2092
2093 /* Force any delayed status interrupt and NAPI */
2094 sky2_write32(hw, STAT_LEV_TIMER_CNT, 0);
2095 sky2_write32(hw, STAT_TX_TIMER_CNT, 0);
2096 sky2_write32(hw, STAT_ISR_TIMER_CNT, 0);
2097 sky2_read8(hw, STAT_ISR_TIMER_CTRL);
2098
2099 sky2_rx_stop(sky2);
2100
2101 spin_lock_bh(&sky2->phy_lock);
2102 sky2_phy_power_down(hw, port);
2103 spin_unlock_bh(&sky2->phy_lock);
2104
2105 sky2_tx_reset(hw, port);
2106
2107 /* Free any pending frames stuck in HW queue */
2108 sky2_tx_complete(sky2, sky2->tx_prod);
2109}
2110
2111/* Network shutdown */
2112static int sky2_close(struct net_device *dev)
2113{
2114 struct sky2_port *sky2 = netdev_priv(dev);
2115 struct sky2_hw *hw = sky2->hw;
2116
2117 /* Never really got started! */
2118 if (!sky2->tx_le)
2119 return 0;
2120
2121 netif_info(sky2, ifdown, dev, "disabling interface\n");
2122
2123 if (hw->ports == 1) {
2124 sky2_write32(hw, B0_IMSK, 0);
2125 sky2_read32(hw, B0_IMSK);
2126
2127 napi_disable(&hw->napi);
2128 free_irq(hw->pdev->irq, hw);
2129 hw->flags &= ~SKY2_HW_IRQ_SETUP;
2130 } else {
2131 u32 imask;
2132
2133 /* Disable port IRQ */
2134 imask = sky2_read32(hw, B0_IMSK);
2135 imask &= ~portirq_msk[sky2->port];
2136 sky2_write32(hw, B0_IMSK, imask);
2137 sky2_read32(hw, B0_IMSK);
2138
2139 synchronize_irq(hw->pdev->irq);
2140 napi_synchronize(&hw->napi);
2141 }
2142
2143 sky2_hw_down(sky2);
2144
2145 sky2_free_buffers(sky2);
2146
2147 return 0;
2148}
2149
2150static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux)
2151{
2152 if (hw->flags & SKY2_HW_FIBRE_PHY)
2153 return SPEED_1000;
2154
2155 if (!(hw->flags & SKY2_HW_GIGABIT)) {
2156 if (aux & PHY_M_PS_SPEED_100)
2157 return SPEED_100;
2158 else
2159 return SPEED_10;
2160 }
2161
2162 switch (aux & PHY_M_PS_SPEED_MSK) {
2163 case PHY_M_PS_SPEED_1000:
2164 return SPEED_1000;
2165 case PHY_M_PS_SPEED_100:
2166 return SPEED_100;
2167 default:
2168 return SPEED_10;
2169 }
2170}
2171
2172static void sky2_link_up(struct sky2_port *sky2)
2173{
2174 struct sky2_hw *hw = sky2->hw;
2175 unsigned port = sky2->port;
2176 static const char *fc_name[] = {
2177 [FC_NONE] = "none",
2178 [FC_TX] = "tx",
2179 [FC_RX] = "rx",
2180 [FC_BOTH] = "both",
2181 };
2182
2183 sky2_set_ipg(sky2);
2184
2185 sky2_enable_rx_tx(sky2);
2186
2187 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
2188
2189 netif_carrier_on(sky2->netdev);
2190
2191 mod_timer(&hw->watchdog_timer, jiffies + 1);
2192
2193 /* Turn on link LED */
2194 sky2_write8(hw, SK_REG(port, LNK_LED_REG),
2195 LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF);
2196
2197 netif_info(sky2, link, sky2->netdev,
2198 "Link is up at %d Mbps, %s duplex, flow control %s\n",
2199 sky2->speed,
2200 sky2->duplex == DUPLEX_FULL ? "full" : "half",
2201 fc_name[sky2->flow_status]);
2202}
2203
2204static void sky2_link_down(struct sky2_port *sky2)
2205{
2206 struct sky2_hw *hw = sky2->hw;
2207 unsigned port = sky2->port;
2208 u16 reg;
2209
2210 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
2211
2212 reg = gma_read16(hw, port, GM_GP_CTRL);
2213 reg &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
2214 gma_write16(hw, port, GM_GP_CTRL, reg);
2215
2216 netif_carrier_off(sky2->netdev);
2217
2218 /* Turn off link LED */
2219 sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
2220
2221 netif_info(sky2, link, sky2->netdev, "Link is down\n");
2222
2223 sky2_phy_init(hw, port);
2224}
2225
2226static enum flow_control sky2_flow(int rx, int tx)
2227{
2228 if (rx)
2229 return tx ? FC_BOTH : FC_RX;
2230 else
2231 return tx ? FC_TX : FC_NONE;
2232}
2233
2234static int sky2_autoneg_done(struct sky2_port *sky2, u16 aux)
2235{
2236 struct sky2_hw *hw = sky2->hw;
2237 unsigned port = sky2->port;
2238 u16 advert, lpa;
2239
2240 advert = gm_phy_read(hw, port, PHY_MARV_AUNE_ADV);
2241 lpa = gm_phy_read(hw, port, PHY_MARV_AUNE_LP);
2242 if (lpa & PHY_M_AN_RF) {
2243 netdev_err(sky2->netdev, "remote fault\n");
2244 return -1;
2245 }
2246
2247 if (!(aux & PHY_M_PS_SPDUP_RES)) {
2248 netdev_err(sky2->netdev, "speed/duplex mismatch\n");
2249 return -1;
2250 }
2251
2252 sky2->speed = sky2_phy_speed(hw, aux);
2253 sky2->duplex = (aux & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
2254
2255 /* Since the pause result bits seem to in different positions on
2256 * different chips. look at registers.
2257 */
2258 if (hw->flags & SKY2_HW_FIBRE_PHY) {
2259 /* Shift for bits in fiber PHY */
2260 advert &= ~(ADVERTISE_PAUSE_CAP|ADVERTISE_PAUSE_ASYM);
2261 lpa &= ~(LPA_PAUSE_CAP|LPA_PAUSE_ASYM);
2262
2263 if (advert & ADVERTISE_1000XPAUSE)
2264 advert |= ADVERTISE_PAUSE_CAP;
2265 if (advert & ADVERTISE_1000XPSE_ASYM)
2266 advert |= ADVERTISE_PAUSE_ASYM;
2267 if (lpa & LPA_1000XPAUSE)
2268 lpa |= LPA_PAUSE_CAP;
2269 if (lpa & LPA_1000XPAUSE_ASYM)
2270 lpa |= LPA_PAUSE_ASYM;
2271 }
2272
2273 sky2->flow_status = FC_NONE;
2274 if (advert & ADVERTISE_PAUSE_CAP) {
2275 if (lpa & LPA_PAUSE_CAP)
2276 sky2->flow_status = FC_BOTH;
2277 else if (advert & ADVERTISE_PAUSE_ASYM)
2278 sky2->flow_status = FC_RX;
2279 } else if (advert & ADVERTISE_PAUSE_ASYM) {
2280 if ((lpa & LPA_PAUSE_CAP) && (lpa & LPA_PAUSE_ASYM))
2281 sky2->flow_status = FC_TX;
2282 }
2283
2284 if (sky2->duplex == DUPLEX_HALF && sky2->speed < SPEED_1000 &&
2285 !(hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_EX))
2286 sky2->flow_status = FC_NONE;
2287
2288 if (sky2->flow_status & FC_TX)
2289 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
2290 else
2291 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
2292
2293 return 0;
2294}
2295
2296/* Interrupt from PHY */
2297static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
2298{
2299 struct net_device *dev = hw->dev[port];
2300 struct sky2_port *sky2 = netdev_priv(dev);
2301 u16 istatus, phystat;
2302
2303 if (!netif_running(dev))
2304 return;
2305
2306 spin_lock(&sky2->phy_lock);
2307 istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
2308 phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
2309
2310 netif_info(sky2, intr, sky2->netdev, "phy interrupt status 0x%x 0x%x\n",
2311 istatus, phystat);
2312
2313 if (istatus & PHY_M_IS_AN_COMPL) {
2314 if (sky2_autoneg_done(sky2, phystat) == 0 &&
2315 !netif_carrier_ok(dev))
2316 sky2_link_up(sky2);
2317 goto out;
2318 }
2319
2320 if (istatus & PHY_M_IS_LSP_CHANGE)
2321 sky2->speed = sky2_phy_speed(hw, phystat);
2322
2323 if (istatus & PHY_M_IS_DUP_CHANGE)
2324 sky2->duplex =
2325 (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
2326
2327 if (istatus & PHY_M_IS_LST_CHANGE) {
2328 if (phystat & PHY_M_PS_LINK_UP)
2329 sky2_link_up(sky2);
2330 else
2331 sky2_link_down(sky2);
2332 }
2333out:
2334 spin_unlock(&sky2->phy_lock);
2335}
2336
2337/* Special quick link interrupt (Yukon-2 Optima only) */
2338static void sky2_qlink_intr(struct sky2_hw *hw)
2339{
2340 struct sky2_port *sky2 = netdev_priv(hw->dev[0]);
2341 u32 imask;
2342 u16 phy;
2343
2344 /* disable irq */
2345 imask = sky2_read32(hw, B0_IMSK);
2346 imask &= ~Y2_IS_PHY_QLNK;
2347 sky2_write32(hw, B0_IMSK, imask);
2348
2349 /* reset PHY Link Detect */
2350 phy = sky2_pci_read16(hw, PSM_CONFIG_REG4);
2351 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2352 sky2_pci_write16(hw, PSM_CONFIG_REG4, phy | 1);
2353 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2354
2355 sky2_link_up(sky2);
2356}
2357
2358/* Transmit timeout is only called if we are running, carrier is up
2359 * and tx queue is full (stopped).
2360 */
2361static void sky2_tx_timeout(struct net_device *dev, unsigned int txqueue)
2362{
2363 struct sky2_port *sky2 = netdev_priv(dev);
2364 struct sky2_hw *hw = sky2->hw;
2365
2366 netif_err(sky2, timer, dev, "tx timeout\n");
2367
2368 netdev_printk(KERN_DEBUG, dev, "transmit ring %u .. %u report=%u done=%u\n",
2369 sky2->tx_cons, sky2->tx_prod,
2370 sky2_read16(hw, sky2->port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
2371 sky2_read16(hw, Q_ADDR(txqaddr[sky2->port], Q_DONE)));
2372
2373 /* can't restart safely under softirq */
2374 schedule_work(&hw->restart_work);
2375}
2376
2377static int sky2_change_mtu(struct net_device *dev, int new_mtu)
2378{
2379 struct sky2_port *sky2 = netdev_priv(dev);
2380 struct sky2_hw *hw = sky2->hw;
2381 unsigned port = sky2->port;
2382 int err;
2383 u16 ctl, mode;
2384 u32 imask;
2385
2386 if (!netif_running(dev)) {
2387 dev->mtu = new_mtu;
2388 netdev_update_features(dev);
2389 return 0;
2390 }
2391
2392 imask = sky2_read32(hw, B0_IMSK);
2393 sky2_write32(hw, B0_IMSK, 0);
2394 sky2_read32(hw, B0_IMSK);
2395
2396 netif_trans_update(dev); /* prevent tx timeout */
2397 napi_disable(&hw->napi);
2398 netif_tx_disable(dev);
2399
2400 synchronize_irq(hw->pdev->irq);
2401
2402 if (!(hw->flags & SKY2_HW_RAM_BUFFER))
2403 sky2_set_tx_stfwd(hw, port);
2404
2405 ctl = gma_read16(hw, port, GM_GP_CTRL);
2406 gma_write16(hw, port, GM_GP_CTRL, ctl & ~GM_GPCR_RX_ENA);
2407 sky2_rx_stop(sky2);
2408 sky2_rx_clean(sky2);
2409
2410 dev->mtu = new_mtu;
2411 netdev_update_features(dev);
2412
2413 mode = DATA_BLIND_VAL(DATA_BLIND_DEF) | GM_SMOD_VLAN_ENA;
2414 if (sky2->speed > SPEED_100)
2415 mode |= IPG_DATA_VAL(IPG_DATA_DEF_1000);
2416 else
2417 mode |= IPG_DATA_VAL(IPG_DATA_DEF_10_100);
2418
2419 if (dev->mtu > ETH_DATA_LEN)
2420 mode |= GM_SMOD_JUMBO_ENA;
2421
2422 gma_write16(hw, port, GM_SERIAL_MODE, mode);
2423
2424 sky2_write8(hw, RB_ADDR(rxqaddr[port], RB_CTRL), RB_ENA_OP_MD);
2425
2426 err = sky2_alloc_rx_skbs(sky2);
2427 if (!err)
2428 sky2_rx_start(sky2);
2429 else
2430 sky2_rx_clean(sky2);
2431 sky2_write32(hw, B0_IMSK, imask);
2432
2433 sky2_read32(hw, B0_Y2_SP_LISR);
2434 napi_enable(&hw->napi);
2435
2436 if (err)
2437 dev_close(dev);
2438 else {
2439 gma_write16(hw, port, GM_GP_CTRL, ctl);
2440
2441 netif_wake_queue(dev);
2442 }
2443
2444 return err;
2445}
2446
2447static inline bool needs_copy(const struct rx_ring_info *re,
2448 unsigned length)
2449{
2450#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
2451 /* Some architectures need the IP header to be aligned */
2452 if (!IS_ALIGNED(re->data_addr + ETH_HLEN, sizeof(u32)))
2453 return true;
2454#endif
2455 return length < copybreak;
2456}
2457
2458/* For small just reuse existing skb for next receive */
2459static struct sk_buff *receive_copy(struct sky2_port *sky2,
2460 const struct rx_ring_info *re,
2461 unsigned length)
2462{
2463 struct sk_buff *skb;
2464
2465 skb = netdev_alloc_skb_ip_align(sky2->netdev, length);
2466 if (likely(skb)) {
2467 dma_sync_single_for_cpu(&sky2->hw->pdev->dev, re->data_addr,
2468 length, DMA_FROM_DEVICE);
2469 skb_copy_from_linear_data(re->skb, skb->data, length);
2470 skb->ip_summed = re->skb->ip_summed;
2471 skb->csum = re->skb->csum;
2472 skb_copy_hash(skb, re->skb);
2473 __vlan_hwaccel_copy_tag(skb, re->skb);
2474
2475 dma_sync_single_for_device(&sky2->hw->pdev->dev,
2476 re->data_addr, length,
2477 DMA_FROM_DEVICE);
2478 __vlan_hwaccel_clear_tag(re->skb);
2479 skb_clear_hash(re->skb);
2480 re->skb->ip_summed = CHECKSUM_NONE;
2481 skb_put(skb, length);
2482 }
2483 return skb;
2484}
2485
2486/* Adjust length of skb with fragments to match received data */
2487static void skb_put_frags(struct sk_buff *skb, unsigned int hdr_space,
2488 unsigned int length)
2489{
2490 int i, num_frags;
2491 unsigned int size;
2492
2493 /* put header into skb */
2494 size = min(length, hdr_space);
2495 skb->tail += size;
2496 skb->len += size;
2497 length -= size;
2498
2499 num_frags = skb_shinfo(skb)->nr_frags;
2500 for (i = 0; i < num_frags; i++) {
2501 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2502
2503 if (length == 0) {
2504 /* don't need this page */
2505 __skb_frag_unref(frag, false);
2506 --skb_shinfo(skb)->nr_frags;
2507 } else {
2508 size = min(length, (unsigned) PAGE_SIZE);
2509
2510 skb_frag_size_set(frag, size);
2511 skb->data_len += size;
2512 skb->truesize += PAGE_SIZE;
2513 skb->len += size;
2514 length -= size;
2515 }
2516 }
2517}
2518
2519/* Normal packet - take skb from ring element and put in a new one */
2520static struct sk_buff *receive_new(struct sky2_port *sky2,
2521 struct rx_ring_info *re,
2522 unsigned int length)
2523{
2524 struct sk_buff *skb;
2525 struct rx_ring_info nre;
2526 unsigned hdr_space = sky2->rx_data_size;
2527
2528 nre.skb = sky2_rx_alloc(sky2, GFP_ATOMIC);
2529 if (unlikely(!nre.skb))
2530 goto nobuf;
2531
2532 if (sky2_rx_map_skb(sky2->hw->pdev, &nre, hdr_space))
2533 goto nomap;
2534
2535 skb = re->skb;
2536 sky2_rx_unmap_skb(sky2->hw->pdev, re);
2537 prefetch(skb->data);
2538 *re = nre;
2539
2540 if (skb_shinfo(skb)->nr_frags)
2541 skb_put_frags(skb, hdr_space, length);
2542 else
2543 skb_put(skb, length);
2544 return skb;
2545
2546nomap:
2547 dev_kfree_skb(nre.skb);
2548nobuf:
2549 return NULL;
2550}
2551
2552/*
2553 * Receive one packet.
2554 * For larger packets, get new buffer.
2555 */
2556static struct sk_buff *sky2_receive(struct net_device *dev,
2557 u16 length, u32 status)
2558{
2559 struct sky2_port *sky2 = netdev_priv(dev);
2560 struct rx_ring_info *re = sky2->rx_ring + sky2->rx_next;
2561 struct sk_buff *skb = NULL;
2562 u16 count = (status & GMR_FS_LEN) >> 16;
2563
2564 netif_printk(sky2, rx_status, KERN_DEBUG, dev,
2565 "rx slot %u status 0x%x len %d\n",
2566 sky2->rx_next, status, length);
2567
2568 sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending;
2569 prefetch(sky2->rx_ring + sky2->rx_next);
2570
2571 if (skb_vlan_tag_present(re->skb))
2572 count -= VLAN_HLEN; /* Account for vlan tag */
2573
2574 /* This chip has hardware problems that generates bogus status.
2575 * So do only marginal checking and expect higher level protocols
2576 * to handle crap frames.
2577 */
2578 if (sky2->hw->chip_id == CHIP_ID_YUKON_FE_P &&
2579 sky2->hw->chip_rev == CHIP_REV_YU_FE2_A0 &&
2580 length != count)
2581 goto okay;
2582
2583 if (status & GMR_FS_ANY_ERR)
2584 goto error;
2585
2586 if (!(status & GMR_FS_RX_OK))
2587 goto resubmit;
2588
2589 /* if length reported by DMA does not match PHY, packet was truncated */
2590 if (length != count)
2591 goto error;
2592
2593okay:
2594 if (needs_copy(re, length))
2595 skb = receive_copy(sky2, re, length);
2596 else
2597 skb = receive_new(sky2, re, length);
2598
2599 dev->stats.rx_dropped += (skb == NULL);
2600
2601resubmit:
2602 sky2_rx_submit(sky2, re);
2603
2604 return skb;
2605
2606error:
2607 ++dev->stats.rx_errors;
2608
2609 if (net_ratelimit())
2610 netif_info(sky2, rx_err, dev,
2611 "rx error, status 0x%x length %d\n", status, length);
2612
2613 goto resubmit;
2614}
2615
2616/* Transmit complete */
2617static inline void sky2_tx_done(struct net_device *dev, u16 last)
2618{
2619 struct sky2_port *sky2 = netdev_priv(dev);
2620
2621 if (netif_running(dev)) {
2622 sky2_tx_complete(sky2, last);
2623
2624 /* Wake unless it's detached, and called e.g. from sky2_close() */
2625 if (tx_avail(sky2) > MAX_SKB_TX_LE + 4)
2626 netif_wake_queue(dev);
2627 }
2628}
2629
2630static inline void sky2_skb_rx(const struct sky2_port *sky2,
2631 struct sk_buff *skb)
2632{
2633 if (skb->ip_summed == CHECKSUM_NONE)
2634 netif_receive_skb(skb);
2635 else
2636 napi_gro_receive(&sky2->hw->napi, skb);
2637}
2638
2639static inline void sky2_rx_done(struct sky2_hw *hw, unsigned port,
2640 unsigned packets, unsigned bytes)
2641{
2642 struct net_device *dev = hw->dev[port];
2643 struct sky2_port *sky2 = netdev_priv(dev);
2644
2645 if (packets == 0)
2646 return;
2647
2648 u64_stats_update_begin(&sky2->rx_stats.syncp);
2649 sky2->rx_stats.packets += packets;
2650 sky2->rx_stats.bytes += bytes;
2651 u64_stats_update_end(&sky2->rx_stats.syncp);
2652
2653 sky2->last_rx = jiffies;
2654 sky2_rx_update(netdev_priv(dev), rxqaddr[port]);
2655}
2656
2657static void sky2_rx_checksum(struct sky2_port *sky2, u32 status)
2658{
2659 /* If this happens then driver assuming wrong format for chip type */
2660 BUG_ON(sky2->hw->flags & SKY2_HW_NEW_LE);
2661
2662 /* Both checksum counters are programmed to start at
2663 * the same offset, so unless there is a problem they
2664 * should match. This failure is an early indication that
2665 * hardware receive checksumming won't work.
2666 */
2667 if (likely((u16)(status >> 16) == (u16)status)) {
2668 struct sk_buff *skb = sky2->rx_ring[sky2->rx_next].skb;
2669 skb->ip_summed = CHECKSUM_COMPLETE;
2670 skb->csum = le16_to_cpu(status);
2671 } else {
2672 dev_notice(&sky2->hw->pdev->dev,
2673 "%s: receive checksum problem (status = %#x)\n",
2674 sky2->netdev->name, status);
2675
2676 /* Disable checksum offload
2677 * It will be reenabled on next ndo_set_features, but if it's
2678 * really broken, will get disabled again
2679 */
2680 sky2->netdev->features &= ~NETIF_F_RXCSUM;
2681 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
2682 BMU_DIS_RX_CHKSUM);
2683 }
2684}
2685
2686static void sky2_rx_tag(struct sky2_port *sky2, u16 length)
2687{
2688 struct sk_buff *skb;
2689
2690 skb = sky2->rx_ring[sky2->rx_next].skb;
2691 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), be16_to_cpu(length));
2692}
2693
2694static void sky2_rx_hash(struct sky2_port *sky2, u32 status)
2695{
2696 struct sk_buff *skb;
2697
2698 skb = sky2->rx_ring[sky2->rx_next].skb;
2699 skb_set_hash(skb, le32_to_cpu(status), PKT_HASH_TYPE_L3);
2700}
2701
2702/* Process status response ring */
2703static int sky2_status_intr(struct sky2_hw *hw, int to_do, u16 idx)
2704{
2705 int work_done = 0;
2706 unsigned int total_bytes[2] = { 0 };
2707 unsigned int total_packets[2] = { 0 };
2708
2709 if (to_do <= 0)
2710 return work_done;
2711
2712 rmb();
2713 do {
2714 struct sky2_port *sky2;
2715 struct sky2_status_le *le = hw->st_le + hw->st_idx;
2716 unsigned port;
2717 struct net_device *dev;
2718 struct sk_buff *skb;
2719 u32 status;
2720 u16 length;
2721 u8 opcode = le->opcode;
2722
2723 if (!(opcode & HW_OWNER))
2724 break;
2725
2726 hw->st_idx = RING_NEXT(hw->st_idx, hw->st_size);
2727
2728 port = le->css & CSS_LINK_BIT;
2729 dev = hw->dev[port];
2730 sky2 = netdev_priv(dev);
2731 length = le16_to_cpu(le->length);
2732 status = le32_to_cpu(le->status);
2733
2734 le->opcode = 0;
2735 switch (opcode & ~HW_OWNER) {
2736 case OP_RXSTAT:
2737 total_packets[port]++;
2738 total_bytes[port] += length;
2739
2740 skb = sky2_receive(dev, length, status);
2741 if (!skb)
2742 break;
2743
2744 /* This chip reports checksum status differently */
2745 if (hw->flags & SKY2_HW_NEW_LE) {
2746 if ((dev->features & NETIF_F_RXCSUM) &&
2747 (le->css & (CSS_ISIPV4 | CSS_ISIPV6)) &&
2748 (le->css & CSS_TCPUDPCSOK))
2749 skb->ip_summed = CHECKSUM_UNNECESSARY;
2750 else
2751 skb->ip_summed = CHECKSUM_NONE;
2752 }
2753
2754 skb->protocol = eth_type_trans(skb, dev);
2755 sky2_skb_rx(sky2, skb);
2756
2757 /* Stop after net poll weight */
2758 if (++work_done >= to_do)
2759 goto exit_loop;
2760 break;
2761
2762 case OP_RXVLAN:
2763 sky2_rx_tag(sky2, length);
2764 break;
2765
2766 case OP_RXCHKSVLAN:
2767 sky2_rx_tag(sky2, length);
2768 fallthrough;
2769 case OP_RXCHKS:
2770 if (likely(dev->features & NETIF_F_RXCSUM))
2771 sky2_rx_checksum(sky2, status);
2772 break;
2773
2774 case OP_RSS_HASH:
2775 sky2_rx_hash(sky2, status);
2776 break;
2777
2778 case OP_TXINDEXLE:
2779 /* TX index reports status for both ports */
2780 sky2_tx_done(hw->dev[0], status & 0xfff);
2781 if (hw->dev[1])
2782 sky2_tx_done(hw->dev[1],
2783 ((status >> 24) & 0xff)
2784 | (u16)(length & 0xf) << 8);
2785 break;
2786
2787 default:
2788 if (net_ratelimit())
2789 pr_warn("unknown status opcode 0x%x\n", opcode);
2790 }
2791 } while (hw->st_idx != idx);
2792
2793 /* Fully processed status ring so clear irq */
2794 sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
2795
2796exit_loop:
2797 sky2_rx_done(hw, 0, total_packets[0], total_bytes[0]);
2798 sky2_rx_done(hw, 1, total_packets[1], total_bytes[1]);
2799
2800 return work_done;
2801}
2802
2803static void sky2_hw_error(struct sky2_hw *hw, unsigned port, u32 status)
2804{
2805 struct net_device *dev = hw->dev[port];
2806
2807 if (net_ratelimit())
2808 netdev_info(dev, "hw error interrupt status 0x%x\n", status);
2809
2810 if (status & Y2_IS_PAR_RD1) {
2811 if (net_ratelimit())
2812 netdev_err(dev, "ram data read parity error\n");
2813 /* Clear IRQ */
2814 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_RD_PERR);
2815 }
2816
2817 if (status & Y2_IS_PAR_WR1) {
2818 if (net_ratelimit())
2819 netdev_err(dev, "ram data write parity error\n");
2820
2821 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_WR_PERR);
2822 }
2823
2824 if (status & Y2_IS_PAR_MAC1) {
2825 if (net_ratelimit())
2826 netdev_err(dev, "MAC parity error\n");
2827 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_PE);
2828 }
2829
2830 if (status & Y2_IS_PAR_RX1) {
2831 if (net_ratelimit())
2832 netdev_err(dev, "RX parity error\n");
2833 sky2_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), BMU_CLR_IRQ_PAR);
2834 }
2835
2836 if (status & Y2_IS_TCP_TXA1) {
2837 if (net_ratelimit())
2838 netdev_err(dev, "TCP segmentation error\n");
2839 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_CLR_IRQ_TCP);
2840 }
2841}
2842
2843static void sky2_hw_intr(struct sky2_hw *hw)
2844{
2845 struct pci_dev *pdev = hw->pdev;
2846 u32 status = sky2_read32(hw, B0_HWE_ISRC);
2847 u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
2848
2849 status &= hwmsk;
2850
2851 if (status & Y2_IS_TIST_OV)
2852 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2853
2854 if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
2855 u16 pci_err;
2856
2857 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2858 pci_err = sky2_pci_read16(hw, PCI_STATUS);
2859 if (net_ratelimit())
2860 dev_err(&pdev->dev, "PCI hardware error (0x%x)\n",
2861 pci_err);
2862
2863 sky2_pci_write16(hw, PCI_STATUS,
2864 pci_err | PCI_STATUS_ERROR_BITS);
2865 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2866 }
2867
2868 if (status & Y2_IS_PCI_EXP) {
2869 /* PCI-Express uncorrectable Error occurred */
2870 u32 err;
2871
2872 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2873 err = sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
2874 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
2875 0xfffffffful);
2876 if (net_ratelimit())
2877 dev_err(&pdev->dev, "PCI Express error (0x%x)\n", err);
2878
2879 sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
2880 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2881 }
2882
2883 if (status & Y2_HWE_L1_MASK)
2884 sky2_hw_error(hw, 0, status);
2885 status >>= 8;
2886 if (status & Y2_HWE_L1_MASK)
2887 sky2_hw_error(hw, 1, status);
2888}
2889
2890static void sky2_mac_intr(struct sky2_hw *hw, unsigned port)
2891{
2892 struct net_device *dev = hw->dev[port];
2893 struct sky2_port *sky2 = netdev_priv(dev);
2894 u8 status = sky2_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
2895
2896 netif_info(sky2, intr, dev, "mac interrupt status 0x%x\n", status);
2897
2898 if (status & GM_IS_RX_CO_OV)
2899 gma_read16(hw, port, GM_RX_IRQ_SRC);
2900
2901 if (status & GM_IS_TX_CO_OV)
2902 gma_read16(hw, port, GM_TX_IRQ_SRC);
2903
2904 if (status & GM_IS_RX_FF_OR) {
2905 ++dev->stats.rx_fifo_errors;
2906 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
2907 }
2908
2909 if (status & GM_IS_TX_FF_UR) {
2910 ++dev->stats.tx_fifo_errors;
2911 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
2912 }
2913}
2914
2915/* This should never happen it is a bug. */
2916static void sky2_le_error(struct sky2_hw *hw, unsigned port, u16 q)
2917{
2918 struct net_device *dev = hw->dev[port];
2919 u16 idx = sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_GET_IDX));
2920
2921 dev_err(&hw->pdev->dev, "%s: descriptor error q=%#x get=%u put=%u\n",
2922 dev->name, (unsigned) q, (unsigned) idx,
2923 (unsigned) sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX)));
2924
2925 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_IRQ_CHK);
2926}
2927
2928static int sky2_rx_hung(struct net_device *dev)
2929{
2930 struct sky2_port *sky2 = netdev_priv(dev);
2931 struct sky2_hw *hw = sky2->hw;
2932 unsigned port = sky2->port;
2933 unsigned rxq = rxqaddr[port];
2934 u32 mac_rp = sky2_read32(hw, SK_REG(port, RX_GMF_RP));
2935 u8 mac_lev = sky2_read8(hw, SK_REG(port, RX_GMF_RLEV));
2936 u8 fifo_rp = sky2_read8(hw, Q_ADDR(rxq, Q_RP));
2937 u8 fifo_lev = sky2_read8(hw, Q_ADDR(rxq, Q_RL));
2938
2939 /* If idle and MAC or PCI is stuck */
2940 if (sky2->check.last == sky2->last_rx &&
2941 ((mac_rp == sky2->check.mac_rp &&
2942 mac_lev != 0 && mac_lev >= sky2->check.mac_lev) ||
2943 /* Check if the PCI RX hang */
2944 (fifo_rp == sky2->check.fifo_rp &&
2945 fifo_lev != 0 && fifo_lev >= sky2->check.fifo_lev))) {
2946 netdev_printk(KERN_DEBUG, dev,
2947 "hung mac %d:%d fifo %d (%d:%d)\n",
2948 mac_lev, mac_rp, fifo_lev,
2949 fifo_rp, sky2_read8(hw, Q_ADDR(rxq, Q_WP)));
2950 return 1;
2951 } else {
2952 sky2->check.last = sky2->last_rx;
2953 sky2->check.mac_rp = mac_rp;
2954 sky2->check.mac_lev = mac_lev;
2955 sky2->check.fifo_rp = fifo_rp;
2956 sky2->check.fifo_lev = fifo_lev;
2957 return 0;
2958 }
2959}
2960
2961static void sky2_watchdog(struct timer_list *t)
2962{
2963 struct sky2_hw *hw = from_timer(hw, t, watchdog_timer);
2964
2965 /* Check for lost IRQ once a second */
2966 if (sky2_read32(hw, B0_ISRC)) {
2967 napi_schedule(&hw->napi);
2968 } else {
2969 int i, active = 0;
2970
2971 for (i = 0; i < hw->ports; i++) {
2972 struct net_device *dev = hw->dev[i];
2973 if (!netif_running(dev))
2974 continue;
2975 ++active;
2976
2977 /* For chips with Rx FIFO, check if stuck */
2978 if ((hw->flags & SKY2_HW_RAM_BUFFER) &&
2979 sky2_rx_hung(dev)) {
2980 netdev_info(dev, "receiver hang detected\n");
2981 schedule_work(&hw->restart_work);
2982 return;
2983 }
2984 }
2985
2986 if (active == 0)
2987 return;
2988 }
2989
2990 mod_timer(&hw->watchdog_timer, round_jiffies(jiffies + HZ));
2991}
2992
2993/* Hardware/software error handling */
2994static void sky2_err_intr(struct sky2_hw *hw, u32 status)
2995{
2996 if (net_ratelimit())
2997 dev_warn(&hw->pdev->dev, "error interrupt status=%#x\n", status);
2998
2999 if (status & Y2_IS_HW_ERR)
3000 sky2_hw_intr(hw);
3001
3002 if (status & Y2_IS_IRQ_MAC1)
3003 sky2_mac_intr(hw, 0);
3004
3005 if (status & Y2_IS_IRQ_MAC2)
3006 sky2_mac_intr(hw, 1);
3007
3008 if (status & Y2_IS_CHK_RX1)
3009 sky2_le_error(hw, 0, Q_R1);
3010
3011 if (status & Y2_IS_CHK_RX2)
3012 sky2_le_error(hw, 1, Q_R2);
3013
3014 if (status & Y2_IS_CHK_TXA1)
3015 sky2_le_error(hw, 0, Q_XA1);
3016
3017 if (status & Y2_IS_CHK_TXA2)
3018 sky2_le_error(hw, 1, Q_XA2);
3019}
3020
3021static int sky2_poll(struct napi_struct *napi, int work_limit)
3022{
3023 struct sky2_hw *hw = container_of(napi, struct sky2_hw, napi);
3024 u32 status = sky2_read32(hw, B0_Y2_SP_EISR);
3025 int work_done = 0;
3026 u16 idx;
3027
3028 if (unlikely(status & Y2_IS_ERROR))
3029 sky2_err_intr(hw, status);
3030
3031 if (status & Y2_IS_IRQ_PHY1)
3032 sky2_phy_intr(hw, 0);
3033
3034 if (status & Y2_IS_IRQ_PHY2)
3035 sky2_phy_intr(hw, 1);
3036
3037 if (status & Y2_IS_PHY_QLNK)
3038 sky2_qlink_intr(hw);
3039
3040 while ((idx = sky2_read16(hw, STAT_PUT_IDX)) != hw->st_idx) {
3041 work_done += sky2_status_intr(hw, work_limit - work_done, idx);
3042
3043 if (work_done >= work_limit)
3044 goto done;
3045 }
3046
3047 napi_complete_done(napi, work_done);
3048 sky2_read32(hw, B0_Y2_SP_LISR);
3049done:
3050
3051 return work_done;
3052}
3053
3054static irqreturn_t sky2_intr(int irq, void *dev_id)
3055{
3056 struct sky2_hw *hw = dev_id;
3057 u32 status;
3058
3059 /* Reading this mask interrupts as side effect */
3060 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
3061 if (status == 0 || status == ~0) {
3062 sky2_write32(hw, B0_Y2_SP_ICR, 2);
3063 return IRQ_NONE;
3064 }
3065
3066 prefetch(&hw->st_le[hw->st_idx]);
3067
3068 napi_schedule(&hw->napi);
3069
3070 return IRQ_HANDLED;
3071}
3072
3073#ifdef CONFIG_NET_POLL_CONTROLLER
3074static void sky2_netpoll(struct net_device *dev)
3075{
3076 struct sky2_port *sky2 = netdev_priv(dev);
3077
3078 napi_schedule(&sky2->hw->napi);
3079}
3080#endif
3081
3082/* Chip internal frequency for clock calculations */
3083static u32 sky2_mhz(const struct sky2_hw *hw)
3084{
3085 switch (hw->chip_id) {
3086 case CHIP_ID_YUKON_EC:
3087 case CHIP_ID_YUKON_EC_U:
3088 case CHIP_ID_YUKON_EX:
3089 case CHIP_ID_YUKON_SUPR:
3090 case CHIP_ID_YUKON_UL_2:
3091 case CHIP_ID_YUKON_OPT:
3092 case CHIP_ID_YUKON_PRM:
3093 case CHIP_ID_YUKON_OP_2:
3094 return 125;
3095
3096 case CHIP_ID_YUKON_FE:
3097 return 100;
3098
3099 case CHIP_ID_YUKON_FE_P:
3100 return 50;
3101
3102 case CHIP_ID_YUKON_XL:
3103 return 156;
3104
3105 default:
3106 BUG();
3107 }
3108}
3109
3110static inline u32 sky2_us2clk(const struct sky2_hw *hw, u32 us)
3111{
3112 return sky2_mhz(hw) * us;
3113}
3114
3115static inline u32 sky2_clk2us(const struct sky2_hw *hw, u32 clk)
3116{
3117 return clk / sky2_mhz(hw);
3118}
3119
3120
3121static int sky2_init(struct sky2_hw *hw)
3122{
3123 u8 t8;
3124
3125 /* Enable all clocks and check for bad PCI access */
3126 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
3127
3128 sky2_write8(hw, B0_CTST, CS_RST_CLR);
3129
3130 hw->chip_id = sky2_read8(hw, B2_CHIP_ID);
3131 hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4;
3132
3133 switch (hw->chip_id) {
3134 case CHIP_ID_YUKON_XL:
3135 hw->flags = SKY2_HW_GIGABIT | SKY2_HW_NEWER_PHY;
3136 if (hw->chip_rev < CHIP_REV_YU_XL_A2)
3137 hw->flags |= SKY2_HW_RSS_BROKEN;
3138 break;
3139
3140 case CHIP_ID_YUKON_EC_U:
3141 hw->flags = SKY2_HW_GIGABIT
3142 | SKY2_HW_NEWER_PHY
3143 | SKY2_HW_ADV_POWER_CTL;
3144 break;
3145
3146 case CHIP_ID_YUKON_EX:
3147 hw->flags = SKY2_HW_GIGABIT
3148 | SKY2_HW_NEWER_PHY
3149 | SKY2_HW_NEW_LE
3150 | SKY2_HW_ADV_POWER_CTL
3151 | SKY2_HW_RSS_CHKSUM;
3152
3153 /* New transmit checksum */
3154 if (hw->chip_rev != CHIP_REV_YU_EX_B0)
3155 hw->flags |= SKY2_HW_AUTO_TX_SUM;
3156 break;
3157
3158 case CHIP_ID_YUKON_EC:
3159 /* This rev is really old, and requires untested workarounds */
3160 if (hw->chip_rev == CHIP_REV_YU_EC_A1) {
3161 dev_err(&hw->pdev->dev, "unsupported revision Yukon-EC rev A1\n");
3162 return -EOPNOTSUPP;
3163 }
3164 hw->flags = SKY2_HW_GIGABIT | SKY2_HW_RSS_BROKEN;
3165 break;
3166
3167 case CHIP_ID_YUKON_FE:
3168 hw->flags = SKY2_HW_RSS_BROKEN;
3169 break;
3170
3171 case CHIP_ID_YUKON_FE_P:
3172 hw->flags = SKY2_HW_NEWER_PHY
3173 | SKY2_HW_NEW_LE
3174 | SKY2_HW_AUTO_TX_SUM
3175 | SKY2_HW_ADV_POWER_CTL;
3176
3177 /* The workaround for status conflicts VLAN tag detection. */
3178 if (hw->chip_rev == CHIP_REV_YU_FE2_A0)
3179 hw->flags |= SKY2_HW_VLAN_BROKEN | SKY2_HW_RSS_CHKSUM;
3180 break;
3181
3182 case CHIP_ID_YUKON_SUPR:
3183 hw->flags = SKY2_HW_GIGABIT
3184 | SKY2_HW_NEWER_PHY
3185 | SKY2_HW_NEW_LE
3186 | SKY2_HW_AUTO_TX_SUM
3187 | SKY2_HW_ADV_POWER_CTL;
3188
3189 if (hw->chip_rev == CHIP_REV_YU_SU_A0)
3190 hw->flags |= SKY2_HW_RSS_CHKSUM;
3191 break;
3192
3193 case CHIP_ID_YUKON_UL_2:
3194 hw->flags = SKY2_HW_GIGABIT
3195 | SKY2_HW_ADV_POWER_CTL;
3196 break;
3197
3198 case CHIP_ID_YUKON_OPT:
3199 case CHIP_ID_YUKON_PRM:
3200 case CHIP_ID_YUKON_OP_2:
3201 hw->flags = SKY2_HW_GIGABIT
3202 | SKY2_HW_NEW_LE
3203 | SKY2_HW_ADV_POWER_CTL;
3204 break;
3205
3206 default:
3207 dev_err(&hw->pdev->dev, "unsupported chip type 0x%x\n",
3208 hw->chip_id);
3209 return -EOPNOTSUPP;
3210 }
3211
3212 hw->pmd_type = sky2_read8(hw, B2_PMD_TYP);
3213 if (hw->pmd_type == 'L' || hw->pmd_type == 'S' || hw->pmd_type == 'P')
3214 hw->flags |= SKY2_HW_FIBRE_PHY;
3215
3216 hw->ports = 1;
3217 t8 = sky2_read8(hw, B2_Y2_HW_RES);
3218 if ((t8 & CFG_DUAL_MAC_MSK) == CFG_DUAL_MAC_MSK) {
3219 if (!(sky2_read8(hw, B2_Y2_CLK_GATE) & Y2_STATUS_LNK2_INAC))
3220 ++hw->ports;
3221 }
3222
3223 if (sky2_read8(hw, B2_E_0))
3224 hw->flags |= SKY2_HW_RAM_BUFFER;
3225
3226 return 0;
3227}
3228
3229static void sky2_reset(struct sky2_hw *hw)
3230{
3231 struct pci_dev *pdev = hw->pdev;
3232 u16 status;
3233 int i;
3234 u32 hwe_mask = Y2_HWE_ALL_MASK;
3235
3236 /* disable ASF */
3237 if (hw->chip_id == CHIP_ID_YUKON_EX
3238 || hw->chip_id == CHIP_ID_YUKON_SUPR) {
3239 sky2_write32(hw, CPU_WDOG, 0);
3240 status = sky2_read16(hw, HCU_CCSR);
3241 status &= ~(HCU_CCSR_AHB_RST | HCU_CCSR_CPU_RST_MODE |
3242 HCU_CCSR_UC_STATE_MSK);
3243 /*
3244 * CPU clock divider shouldn't be used because
3245 * - ASF firmware may malfunction
3246 * - Yukon-Supreme: Parallel FLASH doesn't support divided clocks
3247 */
3248 status &= ~HCU_CCSR_CPU_CLK_DIVIDE_MSK;
3249 sky2_write16(hw, HCU_CCSR, status);
3250 sky2_write32(hw, CPU_WDOG, 0);
3251 } else
3252 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_RESET);
3253 sky2_write16(hw, B0_CTST, Y2_ASF_DISABLE);
3254
3255 /* do a SW reset */
3256 sky2_write8(hw, B0_CTST, CS_RST_SET);
3257 sky2_write8(hw, B0_CTST, CS_RST_CLR);
3258
3259 /* allow writes to PCI config */
3260 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
3261
3262 /* clear PCI errors, if any */
3263 status = sky2_pci_read16(hw, PCI_STATUS);
3264 status |= PCI_STATUS_ERROR_BITS;
3265 sky2_pci_write16(hw, PCI_STATUS, status);
3266
3267 sky2_write8(hw, B0_CTST, CS_MRST_CLR);
3268
3269 if (pci_is_pcie(pdev)) {
3270 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
3271 0xfffffffful);
3272
3273 /* If error bit is stuck on ignore it */
3274 if (sky2_read32(hw, B0_HWE_ISRC) & Y2_IS_PCI_EXP)
3275 dev_info(&pdev->dev, "ignoring stuck error report bit\n");
3276 else
3277 hwe_mask |= Y2_IS_PCI_EXP;
3278 }
3279
3280 sky2_power_on(hw);
3281 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
3282
3283 for (i = 0; i < hw->ports; i++) {
3284 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
3285 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
3286
3287 if (hw->chip_id == CHIP_ID_YUKON_EX ||
3288 hw->chip_id == CHIP_ID_YUKON_SUPR)
3289 sky2_write16(hw, SK_REG(i, GMAC_CTRL),
3290 GMC_BYP_MACSECRX_ON | GMC_BYP_MACSECTX_ON
3291 | GMC_BYP_RETR_ON);
3292
3293 }
3294
3295 if (hw->chip_id == CHIP_ID_YUKON_SUPR && hw->chip_rev > CHIP_REV_YU_SU_B0) {
3296 /* enable MACSec clock gating */
3297 sky2_pci_write32(hw, PCI_DEV_REG3, P_CLK_MACSEC_DIS);
3298 }
3299
3300 if (hw->chip_id == CHIP_ID_YUKON_OPT ||
3301 hw->chip_id == CHIP_ID_YUKON_PRM ||
3302 hw->chip_id == CHIP_ID_YUKON_OP_2) {
3303 u16 reg;
3304
3305 if (hw->chip_id == CHIP_ID_YUKON_OPT && hw->chip_rev == 0) {
3306 /* disable PCI-E PHY power down (set PHY reg 0x80, bit 7 */
3307 sky2_write32(hw, Y2_PEX_PHY_DATA, (0x80UL << 16) | (1 << 7));
3308
3309 /* set PHY Link Detect Timer to 1.1 second (11x 100ms) */
3310 reg = 10;
3311
3312 /* re-enable PEX PM in PEX PHY debug reg. 8 (clear bit 12) */
3313 sky2_write32(hw, Y2_PEX_PHY_DATA, PEX_DB_ACCESS | (0x08UL << 16));
3314 } else {
3315 /* set PHY Link Detect Timer to 0.4 second (4x 100ms) */
3316 reg = 3;
3317 }
3318
3319 reg <<= PSM_CONFIG_REG4_TIMER_PHY_LINK_DETECT_BASE;
3320 reg |= PSM_CONFIG_REG4_RST_PHY_LINK_DETECT;
3321
3322 /* reset PHY Link Detect */
3323 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
3324 sky2_pci_write16(hw, PSM_CONFIG_REG4, reg);
3325
3326 /* check if PSMv2 was running before */
3327 reg = sky2_pci_read16(hw, PSM_CONFIG_REG3);
3328 if (reg & PCI_EXP_LNKCTL_ASPMC)
3329 /* restore the PCIe Link Control register */
3330 sky2_pci_write16(hw, pdev->pcie_cap + PCI_EXP_LNKCTL,
3331 reg);
3332
3333 if (hw->chip_id == CHIP_ID_YUKON_PRM &&
3334 hw->chip_rev == CHIP_REV_YU_PRM_A0) {
3335 /* change PHY Interrupt polarity to low active */
3336 reg = sky2_read16(hw, GPHY_CTRL);
3337 sky2_write16(hw, GPHY_CTRL, reg | GPC_INTPOL);
3338
3339 /* adapt HW for low active PHY Interrupt */
3340 reg = sky2_read16(hw, Y2_CFG_SPC + PCI_LDO_CTRL);
3341 sky2_write16(hw, Y2_CFG_SPC + PCI_LDO_CTRL, reg | PHY_M_UNDOC1);
3342 }
3343
3344 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
3345
3346 /* re-enable PEX PM in PEX PHY debug reg. 8 (clear bit 12) */
3347 sky2_write32(hw, Y2_PEX_PHY_DATA, PEX_DB_ACCESS | (0x08UL << 16));
3348 }
3349
3350 /* Clear I2C IRQ noise */
3351 sky2_write32(hw, B2_I2C_IRQ, 1);
3352
3353 /* turn off hardware timer (unused) */
3354 sky2_write8(hw, B2_TI_CTRL, TIM_STOP);
3355 sky2_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
3356
3357 /* Turn off descriptor polling */
3358 sky2_write32(hw, B28_DPT_CTRL, DPT_STOP);
3359
3360 /* Turn off receive timestamp */
3361 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP);
3362 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
3363
3364 /* enable the Tx Arbiters */
3365 for (i = 0; i < hw->ports; i++)
3366 sky2_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
3367
3368 /* Initialize ram interface */
3369 for (i = 0; i < hw->ports; i++) {
3370 sky2_write8(hw, RAM_BUFFER(i, B3_RI_CTRL), RI_RST_CLR);
3371
3372 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R1), SK_RI_TO_53);
3373 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA1), SK_RI_TO_53);
3374 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS1), SK_RI_TO_53);
3375 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R1), SK_RI_TO_53);
3376 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA1), SK_RI_TO_53);
3377 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS1), SK_RI_TO_53);
3378 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R2), SK_RI_TO_53);
3379 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA2), SK_RI_TO_53);
3380 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS2), SK_RI_TO_53);
3381 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R2), SK_RI_TO_53);
3382 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA2), SK_RI_TO_53);
3383 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
3384 }
3385
3386 sky2_write32(hw, B0_HWE_IMSK, hwe_mask);
3387
3388 for (i = 0; i < hw->ports; i++)
3389 sky2_gmac_reset(hw, i);
3390
3391 memset(hw->st_le, 0, hw->st_size * sizeof(struct sky2_status_le));
3392 hw->st_idx = 0;
3393
3394 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_SET);
3395 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_CLR);
3396
3397 sky2_write32(hw, STAT_LIST_ADDR_LO, hw->st_dma);
3398 sky2_write32(hw, STAT_LIST_ADDR_HI, (u64) hw->st_dma >> 32);
3399
3400 /* Set the list last index */
3401 sky2_write16(hw, STAT_LAST_IDX, hw->st_size - 1);
3402
3403 sky2_write16(hw, STAT_TX_IDX_TH, 10);
3404 sky2_write8(hw, STAT_FIFO_WM, 16);
3405
3406 /* set Status-FIFO ISR watermark */
3407 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0)
3408 sky2_write8(hw, STAT_FIFO_ISR_WM, 4);
3409 else
3410 sky2_write8(hw, STAT_FIFO_ISR_WM, 16);
3411
3412 sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 1000));
3413 sky2_write32(hw, STAT_ISR_TIMER_INI, sky2_us2clk(hw, 20));
3414 sky2_write32(hw, STAT_LEV_TIMER_INI, sky2_us2clk(hw, 100));
3415
3416 /* enable status unit */
3417 sky2_write32(hw, STAT_CTRL, SC_STAT_OP_ON);
3418
3419 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
3420 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
3421 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
3422}
3423
3424/* Take device down (offline).
3425 * Equivalent to doing dev_stop() but this does not
3426 * inform upper layers of the transition.
3427 */
3428static void sky2_detach(struct net_device *dev)
3429{
3430 if (netif_running(dev)) {
3431 netif_tx_lock(dev);
3432 netif_device_detach(dev); /* stop txq */
3433 netif_tx_unlock(dev);
3434 sky2_close(dev);
3435 }
3436}
3437
3438/* Bring device back after doing sky2_detach */
3439static int sky2_reattach(struct net_device *dev)
3440{
3441 int err = 0;
3442
3443 if (netif_running(dev)) {
3444 err = sky2_open(dev);
3445 if (err) {
3446 netdev_info(dev, "could not restart %d\n", err);
3447 dev_close(dev);
3448 } else {
3449 netif_device_attach(dev);
3450 sky2_set_multicast(dev);
3451 }
3452 }
3453
3454 return err;
3455}
3456
3457static void sky2_all_down(struct sky2_hw *hw)
3458{
3459 int i;
3460
3461 if (hw->flags & SKY2_HW_IRQ_SETUP) {
3462 sky2_write32(hw, B0_IMSK, 0);
3463 sky2_read32(hw, B0_IMSK);
3464
3465 synchronize_irq(hw->pdev->irq);
3466 napi_disable(&hw->napi);
3467 }
3468
3469 for (i = 0; i < hw->ports; i++) {
3470 struct net_device *dev = hw->dev[i];
3471 struct sky2_port *sky2 = netdev_priv(dev);
3472
3473 if (!netif_running(dev))
3474 continue;
3475
3476 netif_carrier_off(dev);
3477 netif_tx_disable(dev);
3478 sky2_hw_down(sky2);
3479 }
3480}
3481
3482static void sky2_all_up(struct sky2_hw *hw)
3483{
3484 u32 imask = Y2_IS_BASE;
3485 int i;
3486
3487 for (i = 0; i < hw->ports; i++) {
3488 struct net_device *dev = hw->dev[i];
3489 struct sky2_port *sky2 = netdev_priv(dev);
3490
3491 if (!netif_running(dev))
3492 continue;
3493
3494 sky2_hw_up(sky2);
3495 sky2_set_multicast(dev);
3496 imask |= portirq_msk[i];
3497 netif_wake_queue(dev);
3498 }
3499
3500 if (hw->flags & SKY2_HW_IRQ_SETUP) {
3501 sky2_write32(hw, B0_IMSK, imask);
3502 sky2_read32(hw, B0_IMSK);
3503 sky2_read32(hw, B0_Y2_SP_LISR);
3504 napi_enable(&hw->napi);
3505 }
3506}
3507
3508static void sky2_restart(struct work_struct *work)
3509{
3510 struct sky2_hw *hw = container_of(work, struct sky2_hw, restart_work);
3511
3512 rtnl_lock();
3513
3514 sky2_all_down(hw);
3515 sky2_reset(hw);
3516 sky2_all_up(hw);
3517
3518 rtnl_unlock();
3519}
3520
3521static inline u8 sky2_wol_supported(const struct sky2_hw *hw)
3522{
3523 return sky2_is_copper(hw) ? (WAKE_PHY | WAKE_MAGIC) : 0;
3524}
3525
3526static void sky2_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3527{
3528 const struct sky2_port *sky2 = netdev_priv(dev);
3529
3530 wol->supported = sky2_wol_supported(sky2->hw);
3531 wol->wolopts = sky2->wol;
3532}
3533
3534static int sky2_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3535{
3536 struct sky2_port *sky2 = netdev_priv(dev);
3537 struct sky2_hw *hw = sky2->hw;
3538 bool enable_wakeup = false;
3539 int i;
3540
3541 if ((wol->wolopts & ~sky2_wol_supported(sky2->hw)) ||
3542 !device_can_wakeup(&hw->pdev->dev))
3543 return -EOPNOTSUPP;
3544
3545 sky2->wol = wol->wolopts;
3546
3547 for (i = 0; i < hw->ports; i++) {
3548 struct net_device *dev = hw->dev[i];
3549 struct sky2_port *sky2 = netdev_priv(dev);
3550
3551 if (sky2->wol)
3552 enable_wakeup = true;
3553 }
3554 device_set_wakeup_enable(&hw->pdev->dev, enable_wakeup);
3555
3556 return 0;
3557}
3558
3559static u32 sky2_supported_modes(const struct sky2_hw *hw)
3560{
3561 if (sky2_is_copper(hw)) {
3562 u32 modes = SUPPORTED_10baseT_Half
3563 | SUPPORTED_10baseT_Full
3564 | SUPPORTED_100baseT_Half
3565 | SUPPORTED_100baseT_Full;
3566
3567 if (hw->flags & SKY2_HW_GIGABIT)
3568 modes |= SUPPORTED_1000baseT_Half
3569 | SUPPORTED_1000baseT_Full;
3570 return modes;
3571 } else
3572 return SUPPORTED_1000baseT_Half
3573 | SUPPORTED_1000baseT_Full;
3574}
3575
3576static int sky2_get_link_ksettings(struct net_device *dev,
3577 struct ethtool_link_ksettings *cmd)
3578{
3579 struct sky2_port *sky2 = netdev_priv(dev);
3580 struct sky2_hw *hw = sky2->hw;
3581 u32 supported, advertising;
3582
3583 supported = sky2_supported_modes(hw);
3584 cmd->base.phy_address = PHY_ADDR_MARV;
3585 if (sky2_is_copper(hw)) {
3586 cmd->base.port = PORT_TP;
3587 cmd->base.speed = sky2->speed;
3588 supported |= SUPPORTED_Autoneg | SUPPORTED_TP;
3589 } else {
3590 cmd->base.speed = SPEED_1000;
3591 cmd->base.port = PORT_FIBRE;
3592 supported |= SUPPORTED_Autoneg | SUPPORTED_FIBRE;
3593 }
3594
3595 advertising = sky2->advertising;
3596 cmd->base.autoneg = (sky2->flags & SKY2_FLAG_AUTO_SPEED)
3597 ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3598 cmd->base.duplex = sky2->duplex;
3599
3600 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
3601 supported);
3602 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
3603 advertising);
3604
3605 return 0;
3606}
3607
3608static int sky2_set_link_ksettings(struct net_device *dev,
3609 const struct ethtool_link_ksettings *cmd)
3610{
3611 struct sky2_port *sky2 = netdev_priv(dev);
3612 const struct sky2_hw *hw = sky2->hw;
3613 u32 supported = sky2_supported_modes(hw);
3614 u32 new_advertising;
3615
3616 ethtool_convert_link_mode_to_legacy_u32(&new_advertising,
3617 cmd->link_modes.advertising);
3618
3619 if (cmd->base.autoneg == AUTONEG_ENABLE) {
3620 if (new_advertising & ~supported)
3621 return -EINVAL;
3622
3623 if (sky2_is_copper(hw))
3624 sky2->advertising = new_advertising |
3625 ADVERTISED_TP |
3626 ADVERTISED_Autoneg;
3627 else
3628 sky2->advertising = new_advertising |
3629 ADVERTISED_FIBRE |
3630 ADVERTISED_Autoneg;
3631
3632 sky2->flags |= SKY2_FLAG_AUTO_SPEED;
3633 sky2->duplex = -1;
3634 sky2->speed = -1;
3635 } else {
3636 u32 setting;
3637 u32 speed = cmd->base.speed;
3638
3639 switch (speed) {
3640 case SPEED_1000:
3641 if (cmd->base.duplex == DUPLEX_FULL)
3642 setting = SUPPORTED_1000baseT_Full;
3643 else if (cmd->base.duplex == DUPLEX_HALF)
3644 setting = SUPPORTED_1000baseT_Half;
3645 else
3646 return -EINVAL;
3647 break;
3648 case SPEED_100:
3649 if (cmd->base.duplex == DUPLEX_FULL)
3650 setting = SUPPORTED_100baseT_Full;
3651 else if (cmd->base.duplex == DUPLEX_HALF)
3652 setting = SUPPORTED_100baseT_Half;
3653 else
3654 return -EINVAL;
3655 break;
3656
3657 case SPEED_10:
3658 if (cmd->base.duplex == DUPLEX_FULL)
3659 setting = SUPPORTED_10baseT_Full;
3660 else if (cmd->base.duplex == DUPLEX_HALF)
3661 setting = SUPPORTED_10baseT_Half;
3662 else
3663 return -EINVAL;
3664 break;
3665 default:
3666 return -EINVAL;
3667 }
3668
3669 if ((setting & supported) == 0)
3670 return -EINVAL;
3671
3672 sky2->speed = speed;
3673 sky2->duplex = cmd->base.duplex;
3674 sky2->flags &= ~SKY2_FLAG_AUTO_SPEED;
3675 }
3676
3677 if (netif_running(dev)) {
3678 sky2_phy_reinit(sky2);
3679 sky2_set_multicast(dev);
3680 }
3681
3682 return 0;
3683}
3684
3685static void sky2_get_drvinfo(struct net_device *dev,
3686 struct ethtool_drvinfo *info)
3687{
3688 struct sky2_port *sky2 = netdev_priv(dev);
3689
3690 strscpy(info->driver, DRV_NAME, sizeof(info->driver));
3691 strscpy(info->version, DRV_VERSION, sizeof(info->version));
3692 strscpy(info->bus_info, pci_name(sky2->hw->pdev),
3693 sizeof(info->bus_info));
3694}
3695
3696static const struct sky2_stat {
3697 char name[ETH_GSTRING_LEN];
3698 u16 offset;
3699} sky2_stats[] = {
3700 { "tx_bytes", GM_TXO_OK_HI },
3701 { "rx_bytes", GM_RXO_OK_HI },
3702 { "tx_broadcast", GM_TXF_BC_OK },
3703 { "rx_broadcast", GM_RXF_BC_OK },
3704 { "tx_multicast", GM_TXF_MC_OK },
3705 { "rx_multicast", GM_RXF_MC_OK },
3706 { "tx_unicast", GM_TXF_UC_OK },
3707 { "rx_unicast", GM_RXF_UC_OK },
3708 { "tx_mac_pause", GM_TXF_MPAUSE },
3709 { "rx_mac_pause", GM_RXF_MPAUSE },
3710 { "collisions", GM_TXF_COL },
3711 { "late_collision",GM_TXF_LAT_COL },
3712 { "aborted", GM_TXF_ABO_COL },
3713 { "single_collisions", GM_TXF_SNG_COL },
3714 { "multi_collisions", GM_TXF_MUL_COL },
3715
3716 { "rx_short", GM_RXF_SHT },
3717 { "rx_runt", GM_RXE_FRAG },
3718 { "rx_64_byte_packets", GM_RXF_64B },
3719 { "rx_65_to_127_byte_packets", GM_RXF_127B },
3720 { "rx_128_to_255_byte_packets", GM_RXF_255B },
3721 { "rx_256_to_511_byte_packets", GM_RXF_511B },
3722 { "rx_512_to_1023_byte_packets", GM_RXF_1023B },
3723 { "rx_1024_to_1518_byte_packets", GM_RXF_1518B },
3724 { "rx_1518_to_max_byte_packets", GM_RXF_MAX_SZ },
3725 { "rx_too_long", GM_RXF_LNG_ERR },
3726 { "rx_fifo_overflow", GM_RXE_FIFO_OV },
3727 { "rx_jabber", GM_RXF_JAB_PKT },
3728 { "rx_fcs_error", GM_RXF_FCS_ERR },
3729
3730 { "tx_64_byte_packets", GM_TXF_64B },
3731 { "tx_65_to_127_byte_packets", GM_TXF_127B },
3732 { "tx_128_to_255_byte_packets", GM_TXF_255B },
3733 { "tx_256_to_511_byte_packets", GM_TXF_511B },
3734 { "tx_512_to_1023_byte_packets", GM_TXF_1023B },
3735 { "tx_1024_to_1518_byte_packets", GM_TXF_1518B },
3736 { "tx_1519_to_max_byte_packets", GM_TXF_MAX_SZ },
3737 { "tx_fifo_underrun", GM_TXE_FIFO_UR },
3738};
3739
3740static u32 sky2_get_msglevel(struct net_device *netdev)
3741{
3742 struct sky2_port *sky2 = netdev_priv(netdev);
3743 return sky2->msg_enable;
3744}
3745
3746static int sky2_nway_reset(struct net_device *dev)
3747{
3748 struct sky2_port *sky2 = netdev_priv(dev);
3749
3750 if (!netif_running(dev) || !(sky2->flags & SKY2_FLAG_AUTO_SPEED))
3751 return -EINVAL;
3752
3753 sky2_phy_reinit(sky2);
3754 sky2_set_multicast(dev);
3755
3756 return 0;
3757}
3758
3759static void sky2_phy_stats(struct sky2_port *sky2, u64 * data, unsigned count)
3760{
3761 struct sky2_hw *hw = sky2->hw;
3762 unsigned port = sky2->port;
3763 int i;
3764
3765 data[0] = get_stats64(hw, port, GM_TXO_OK_LO);
3766 data[1] = get_stats64(hw, port, GM_RXO_OK_LO);
3767
3768 for (i = 2; i < count; i++)
3769 data[i] = get_stats32(hw, port, sky2_stats[i].offset);
3770}
3771
3772static void sky2_set_msglevel(struct net_device *netdev, u32 value)
3773{
3774 struct sky2_port *sky2 = netdev_priv(netdev);
3775 sky2->msg_enable = value;
3776}
3777
3778static int sky2_get_sset_count(struct net_device *dev, int sset)
3779{
3780 switch (sset) {
3781 case ETH_SS_STATS:
3782 return ARRAY_SIZE(sky2_stats);
3783 default:
3784 return -EOPNOTSUPP;
3785 }
3786}
3787
3788static void sky2_get_ethtool_stats(struct net_device *dev,
3789 struct ethtool_stats *stats, u64 * data)
3790{
3791 struct sky2_port *sky2 = netdev_priv(dev);
3792
3793 sky2_phy_stats(sky2, data, ARRAY_SIZE(sky2_stats));
3794}
3795
3796static void sky2_get_strings(struct net_device *dev, u32 stringset, u8 * data)
3797{
3798 int i;
3799
3800 switch (stringset) {
3801 case ETH_SS_STATS:
3802 for (i = 0; i < ARRAY_SIZE(sky2_stats); i++)
3803 memcpy(data + i * ETH_GSTRING_LEN,
3804 sky2_stats[i].name, ETH_GSTRING_LEN);
3805 break;
3806 }
3807}
3808
3809static int sky2_set_mac_address(struct net_device *dev, void *p)
3810{
3811 struct sky2_port *sky2 = netdev_priv(dev);
3812 struct sky2_hw *hw = sky2->hw;
3813 unsigned port = sky2->port;
3814 const struct sockaddr *addr = p;
3815
3816 if (!is_valid_ether_addr(addr->sa_data))
3817 return -EADDRNOTAVAIL;
3818
3819 eth_hw_addr_set(dev, addr->sa_data);
3820 memcpy_toio(hw->regs + B2_MAC_1 + port * 8,
3821 dev->dev_addr, ETH_ALEN);
3822 memcpy_toio(hw->regs + B2_MAC_2 + port * 8,
3823 dev->dev_addr, ETH_ALEN);
3824
3825 /* virtual address for data */
3826 gma_set_addr(hw, port, GM_SRC_ADDR_2L, dev->dev_addr);
3827
3828 /* physical address: used for pause frames */
3829 gma_set_addr(hw, port, GM_SRC_ADDR_1L, dev->dev_addr);
3830
3831 return 0;
3832}
3833
3834static inline void sky2_add_filter(u8 filter[8], const u8 *addr)
3835{
3836 u32 bit;
3837
3838 bit = ether_crc(ETH_ALEN, addr) & 63;
3839 filter[bit >> 3] |= 1 << (bit & 7);
3840}
3841
3842static void sky2_set_multicast(struct net_device *dev)
3843{
3844 struct sky2_port *sky2 = netdev_priv(dev);
3845 struct sky2_hw *hw = sky2->hw;
3846 unsigned port = sky2->port;
3847 struct netdev_hw_addr *ha;
3848 u16 reg;
3849 u8 filter[8];
3850 int rx_pause;
3851 static const u8 pause_mc_addr[ETH_ALEN] = { 0x1, 0x80, 0xc2, 0x0, 0x0, 0x1 };
3852
3853 rx_pause = (sky2->flow_status == FC_RX || sky2->flow_status == FC_BOTH);
3854 memset(filter, 0, sizeof(filter));
3855
3856 reg = gma_read16(hw, port, GM_RX_CTRL);
3857 reg |= GM_RXCR_UCF_ENA;
3858
3859 if (dev->flags & IFF_PROMISC) /* promiscuous */
3860 reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
3861 else if (dev->flags & IFF_ALLMULTI)
3862 memset(filter, 0xff, sizeof(filter));
3863 else if (netdev_mc_empty(dev) && !rx_pause)
3864 reg &= ~GM_RXCR_MCF_ENA;
3865 else {
3866 reg |= GM_RXCR_MCF_ENA;
3867
3868 if (rx_pause)
3869 sky2_add_filter(filter, pause_mc_addr);
3870
3871 netdev_for_each_mc_addr(ha, dev)
3872 sky2_add_filter(filter, ha->addr);
3873 }
3874
3875 gma_write16(hw, port, GM_MC_ADDR_H1,
3876 (u16) filter[0] | ((u16) filter[1] << 8));
3877 gma_write16(hw, port, GM_MC_ADDR_H2,
3878 (u16) filter[2] | ((u16) filter[3] << 8));
3879 gma_write16(hw, port, GM_MC_ADDR_H3,
3880 (u16) filter[4] | ((u16) filter[5] << 8));
3881 gma_write16(hw, port, GM_MC_ADDR_H4,
3882 (u16) filter[6] | ((u16) filter[7] << 8));
3883
3884 gma_write16(hw, port, GM_RX_CTRL, reg);
3885}
3886
3887static void sky2_get_stats(struct net_device *dev,
3888 struct rtnl_link_stats64 *stats)
3889{
3890 struct sky2_port *sky2 = netdev_priv(dev);
3891 struct sky2_hw *hw = sky2->hw;
3892 unsigned port = sky2->port;
3893 unsigned int start;
3894 u64 _bytes, _packets;
3895
3896 do {
3897 start = u64_stats_fetch_begin(&sky2->rx_stats.syncp);
3898 _bytes = sky2->rx_stats.bytes;
3899 _packets = sky2->rx_stats.packets;
3900 } while (u64_stats_fetch_retry(&sky2->rx_stats.syncp, start));
3901
3902 stats->rx_packets = _packets;
3903 stats->rx_bytes = _bytes;
3904
3905 do {
3906 start = u64_stats_fetch_begin(&sky2->tx_stats.syncp);
3907 _bytes = sky2->tx_stats.bytes;
3908 _packets = sky2->tx_stats.packets;
3909 } while (u64_stats_fetch_retry(&sky2->tx_stats.syncp, start));
3910
3911 stats->tx_packets = _packets;
3912 stats->tx_bytes = _bytes;
3913
3914 stats->multicast = get_stats32(hw, port, GM_RXF_MC_OK)
3915 + get_stats32(hw, port, GM_RXF_BC_OK);
3916
3917 stats->collisions = get_stats32(hw, port, GM_TXF_COL);
3918
3919 stats->rx_length_errors = get_stats32(hw, port, GM_RXF_LNG_ERR);
3920 stats->rx_crc_errors = get_stats32(hw, port, GM_RXF_FCS_ERR);
3921 stats->rx_frame_errors = get_stats32(hw, port, GM_RXF_SHT)
3922 + get_stats32(hw, port, GM_RXE_FRAG);
3923 stats->rx_over_errors = get_stats32(hw, port, GM_RXE_FIFO_OV);
3924
3925 stats->rx_dropped = dev->stats.rx_dropped;
3926 stats->rx_fifo_errors = dev->stats.rx_fifo_errors;
3927 stats->tx_fifo_errors = dev->stats.tx_fifo_errors;
3928}
3929
3930/* Can have one global because blinking is controlled by
3931 * ethtool and that is always under RTNL mutex
3932 */
3933static void sky2_led(struct sky2_port *sky2, enum led_mode mode)
3934{
3935 struct sky2_hw *hw = sky2->hw;
3936 unsigned port = sky2->port;
3937
3938 spin_lock_bh(&sky2->phy_lock);
3939 if (hw->chip_id == CHIP_ID_YUKON_EC_U ||
3940 hw->chip_id == CHIP_ID_YUKON_EX ||
3941 hw->chip_id == CHIP_ID_YUKON_SUPR) {
3942 u16 pg;
3943 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
3944 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
3945
3946 switch (mode) {
3947 case MO_LED_OFF:
3948 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3949 PHY_M_LEDC_LOS_CTRL(8) |
3950 PHY_M_LEDC_INIT_CTRL(8) |
3951 PHY_M_LEDC_STA1_CTRL(8) |
3952 PHY_M_LEDC_STA0_CTRL(8));
3953 break;
3954 case MO_LED_ON:
3955 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3956 PHY_M_LEDC_LOS_CTRL(9) |
3957 PHY_M_LEDC_INIT_CTRL(9) |
3958 PHY_M_LEDC_STA1_CTRL(9) |
3959 PHY_M_LEDC_STA0_CTRL(9));
3960 break;
3961 case MO_LED_BLINK:
3962 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3963 PHY_M_LEDC_LOS_CTRL(0xa) |
3964 PHY_M_LEDC_INIT_CTRL(0xa) |
3965 PHY_M_LEDC_STA1_CTRL(0xa) |
3966 PHY_M_LEDC_STA0_CTRL(0xa));
3967 break;
3968 case MO_LED_NORM:
3969 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3970 PHY_M_LEDC_LOS_CTRL(1) |
3971 PHY_M_LEDC_INIT_CTRL(8) |
3972 PHY_M_LEDC_STA1_CTRL(7) |
3973 PHY_M_LEDC_STA0_CTRL(7));
3974 }
3975
3976 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
3977 } else
3978 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
3979 PHY_M_LED_MO_DUP(mode) |
3980 PHY_M_LED_MO_10(mode) |
3981 PHY_M_LED_MO_100(mode) |
3982 PHY_M_LED_MO_1000(mode) |
3983 PHY_M_LED_MO_RX(mode) |
3984 PHY_M_LED_MO_TX(mode));
3985
3986 spin_unlock_bh(&sky2->phy_lock);
3987}
3988
3989/* blink LED's for finding board */
3990static int sky2_set_phys_id(struct net_device *dev,
3991 enum ethtool_phys_id_state state)
3992{
3993 struct sky2_port *sky2 = netdev_priv(dev);
3994
3995 switch (state) {
3996 case ETHTOOL_ID_ACTIVE:
3997 return 1; /* cycle on/off once per second */
3998 case ETHTOOL_ID_INACTIVE:
3999 sky2_led(sky2, MO_LED_NORM);
4000 break;
4001 case ETHTOOL_ID_ON:
4002 sky2_led(sky2, MO_LED_ON);
4003 break;
4004 case ETHTOOL_ID_OFF:
4005 sky2_led(sky2, MO_LED_OFF);
4006 break;
4007 }
4008
4009 return 0;
4010}
4011
4012static void sky2_get_pauseparam(struct net_device *dev,
4013 struct ethtool_pauseparam *ecmd)
4014{
4015 struct sky2_port *sky2 = netdev_priv(dev);
4016
4017 switch (sky2->flow_mode) {
4018 case FC_NONE:
4019 ecmd->tx_pause = ecmd->rx_pause = 0;
4020 break;
4021 case FC_TX:
4022 ecmd->tx_pause = 1, ecmd->rx_pause = 0;
4023 break;
4024 case FC_RX:
4025 ecmd->tx_pause = 0, ecmd->rx_pause = 1;
4026 break;
4027 case FC_BOTH:
4028 ecmd->tx_pause = ecmd->rx_pause = 1;
4029 }
4030
4031 ecmd->autoneg = (sky2->flags & SKY2_FLAG_AUTO_PAUSE)
4032 ? AUTONEG_ENABLE : AUTONEG_DISABLE;
4033}
4034
4035static int sky2_set_pauseparam(struct net_device *dev,
4036 struct ethtool_pauseparam *ecmd)
4037{
4038 struct sky2_port *sky2 = netdev_priv(dev);
4039
4040 if (ecmd->autoneg == AUTONEG_ENABLE)
4041 sky2->flags |= SKY2_FLAG_AUTO_PAUSE;
4042 else
4043 sky2->flags &= ~SKY2_FLAG_AUTO_PAUSE;
4044
4045 sky2->flow_mode = sky2_flow(ecmd->rx_pause, ecmd->tx_pause);
4046
4047 if (netif_running(dev))
4048 sky2_phy_reinit(sky2);
4049
4050 return 0;
4051}
4052
4053static int sky2_get_coalesce(struct net_device *dev,
4054 struct ethtool_coalesce *ecmd,
4055 struct kernel_ethtool_coalesce *kernel_coal,
4056 struct netlink_ext_ack *extack)
4057{
4058 struct sky2_port *sky2 = netdev_priv(dev);
4059 struct sky2_hw *hw = sky2->hw;
4060
4061 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_STOP)
4062 ecmd->tx_coalesce_usecs = 0;
4063 else {
4064 u32 clks = sky2_read32(hw, STAT_TX_TIMER_INI);
4065 ecmd->tx_coalesce_usecs = sky2_clk2us(hw, clks);
4066 }
4067 ecmd->tx_max_coalesced_frames = sky2_read16(hw, STAT_TX_IDX_TH);
4068
4069 if (sky2_read8(hw, STAT_LEV_TIMER_CTRL) == TIM_STOP)
4070 ecmd->rx_coalesce_usecs = 0;
4071 else {
4072 u32 clks = sky2_read32(hw, STAT_LEV_TIMER_INI);
4073 ecmd->rx_coalesce_usecs = sky2_clk2us(hw, clks);
4074 }
4075 ecmd->rx_max_coalesced_frames = sky2_read8(hw, STAT_FIFO_WM);
4076
4077 if (sky2_read8(hw, STAT_ISR_TIMER_CTRL) == TIM_STOP)
4078 ecmd->rx_coalesce_usecs_irq = 0;
4079 else {
4080 u32 clks = sky2_read32(hw, STAT_ISR_TIMER_INI);
4081 ecmd->rx_coalesce_usecs_irq = sky2_clk2us(hw, clks);
4082 }
4083
4084 ecmd->rx_max_coalesced_frames_irq = sky2_read8(hw, STAT_FIFO_ISR_WM);
4085
4086 return 0;
4087}
4088
4089/* Note: this affect both ports */
4090static int sky2_set_coalesce(struct net_device *dev,
4091 struct ethtool_coalesce *ecmd,
4092 struct kernel_ethtool_coalesce *kernel_coal,
4093 struct netlink_ext_ack *extack)
4094{
4095 struct sky2_port *sky2 = netdev_priv(dev);
4096 struct sky2_hw *hw = sky2->hw;
4097 const u32 tmax = sky2_clk2us(hw, 0x0ffffff);
4098
4099 if (ecmd->tx_coalesce_usecs > tmax ||
4100 ecmd->rx_coalesce_usecs > tmax ||
4101 ecmd->rx_coalesce_usecs_irq > tmax)
4102 return -EINVAL;
4103
4104 if (ecmd->tx_max_coalesced_frames >= sky2->tx_ring_size-1)
4105 return -EINVAL;
4106 if (ecmd->rx_max_coalesced_frames > RX_MAX_PENDING)
4107 return -EINVAL;
4108 if (ecmd->rx_max_coalesced_frames_irq > RX_MAX_PENDING)
4109 return -EINVAL;
4110
4111 if (ecmd->tx_coalesce_usecs == 0)
4112 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
4113 else {
4114 sky2_write32(hw, STAT_TX_TIMER_INI,
4115 sky2_us2clk(hw, ecmd->tx_coalesce_usecs));
4116 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
4117 }
4118 sky2_write16(hw, STAT_TX_IDX_TH, ecmd->tx_max_coalesced_frames);
4119
4120 if (ecmd->rx_coalesce_usecs == 0)
4121 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_STOP);
4122 else {
4123 sky2_write32(hw, STAT_LEV_TIMER_INI,
4124 sky2_us2clk(hw, ecmd->rx_coalesce_usecs));
4125 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
4126 }
4127 sky2_write8(hw, STAT_FIFO_WM, ecmd->rx_max_coalesced_frames);
4128
4129 if (ecmd->rx_coalesce_usecs_irq == 0)
4130 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_STOP);
4131 else {
4132 sky2_write32(hw, STAT_ISR_TIMER_INI,
4133 sky2_us2clk(hw, ecmd->rx_coalesce_usecs_irq));
4134 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
4135 }
4136 sky2_write8(hw, STAT_FIFO_ISR_WM, ecmd->rx_max_coalesced_frames_irq);
4137 return 0;
4138}
4139
4140/*
4141 * Hardware is limited to min of 128 and max of 2048 for ring size
4142 * and rounded up to next power of two
4143 * to avoid division in modulus calculation
4144 */
4145static unsigned long roundup_ring_size(unsigned long pending)
4146{
4147 return max(128ul, roundup_pow_of_two(pending+1));
4148}
4149
4150static void sky2_get_ringparam(struct net_device *dev,
4151 struct ethtool_ringparam *ering,
4152 struct kernel_ethtool_ringparam *kernel_ering,
4153 struct netlink_ext_ack *extack)
4154{
4155 struct sky2_port *sky2 = netdev_priv(dev);
4156
4157 ering->rx_max_pending = RX_MAX_PENDING;
4158 ering->tx_max_pending = TX_MAX_PENDING;
4159
4160 ering->rx_pending = sky2->rx_pending;
4161 ering->tx_pending = sky2->tx_pending;
4162}
4163
4164static int sky2_set_ringparam(struct net_device *dev,
4165 struct ethtool_ringparam *ering,
4166 struct kernel_ethtool_ringparam *kernel_ering,
4167 struct netlink_ext_ack *extack)
4168{
4169 struct sky2_port *sky2 = netdev_priv(dev);
4170
4171 if (ering->rx_pending > RX_MAX_PENDING ||
4172 ering->rx_pending < 8 ||
4173 ering->tx_pending < TX_MIN_PENDING ||
4174 ering->tx_pending > TX_MAX_PENDING)
4175 return -EINVAL;
4176
4177 sky2_detach(dev);
4178
4179 sky2->rx_pending = ering->rx_pending;
4180 sky2->tx_pending = ering->tx_pending;
4181 sky2->tx_ring_size = roundup_ring_size(sky2->tx_pending);
4182
4183 return sky2_reattach(dev);
4184}
4185
4186static int sky2_get_regs_len(struct net_device *dev)
4187{
4188 return 0x4000;
4189}
4190
4191static int sky2_reg_access_ok(struct sky2_hw *hw, unsigned int b)
4192{
4193 /* This complicated switch statement is to make sure and
4194 * only access regions that are unreserved.
4195 * Some blocks are only valid on dual port cards.
4196 */
4197 switch (b) {
4198 /* second port */
4199 case 5: /* Tx Arbiter 2 */
4200 case 9: /* RX2 */
4201 case 14 ... 15: /* TX2 */
4202 case 17: case 19: /* Ram Buffer 2 */
4203 case 22 ... 23: /* Tx Ram Buffer 2 */
4204 case 25: /* Rx MAC Fifo 1 */
4205 case 27: /* Tx MAC Fifo 2 */
4206 case 31: /* GPHY 2 */
4207 case 40 ... 47: /* Pattern Ram 2 */
4208 case 52: case 54: /* TCP Segmentation 2 */
4209 case 112 ... 116: /* GMAC 2 */
4210 return hw->ports > 1;
4211
4212 case 0: /* Control */
4213 case 2: /* Mac address */
4214 case 4: /* Tx Arbiter 1 */
4215 case 7: /* PCI express reg */
4216 case 8: /* RX1 */
4217 case 12 ... 13: /* TX1 */
4218 case 16: case 18:/* Rx Ram Buffer 1 */
4219 case 20 ... 21: /* Tx Ram Buffer 1 */
4220 case 24: /* Rx MAC Fifo 1 */
4221 case 26: /* Tx MAC Fifo 1 */
4222 case 28 ... 29: /* Descriptor and status unit */
4223 case 30: /* GPHY 1*/
4224 case 32 ... 39: /* Pattern Ram 1 */
4225 case 48: case 50: /* TCP Segmentation 1 */
4226 case 56 ... 60: /* PCI space */
4227 case 80 ... 84: /* GMAC 1 */
4228 return 1;
4229
4230 default:
4231 return 0;
4232 }
4233}
4234
4235/*
4236 * Returns copy of control register region
4237 * Note: ethtool_get_regs always provides full size (16k) buffer
4238 */
4239static void sky2_get_regs(struct net_device *dev, struct ethtool_regs *regs,
4240 void *p)
4241{
4242 const struct sky2_port *sky2 = netdev_priv(dev);
4243 const void __iomem *io = sky2->hw->regs;
4244 unsigned int b;
4245
4246 regs->version = 1;
4247
4248 for (b = 0; b < 128; b++) {
4249 /* skip poisonous diagnostic ram region in block 3 */
4250 if (b == 3)
4251 memcpy_fromio(p + 0x10, io + 0x10, 128 - 0x10);
4252 else if (sky2_reg_access_ok(sky2->hw, b))
4253 memcpy_fromio(p, io, 128);
4254 else
4255 memset(p, 0, 128);
4256
4257 p += 128;
4258 io += 128;
4259 }
4260}
4261
4262static int sky2_get_eeprom_len(struct net_device *dev)
4263{
4264 struct sky2_port *sky2 = netdev_priv(dev);
4265 struct sky2_hw *hw = sky2->hw;
4266 u16 reg2;
4267
4268 reg2 = sky2_pci_read16(hw, PCI_DEV_REG2);
4269 return 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
4270}
4271
4272static int sky2_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
4273 u8 *data)
4274{
4275 struct sky2_port *sky2 = netdev_priv(dev);
4276 int rc;
4277
4278 eeprom->magic = SKY2_EEPROM_MAGIC;
4279 rc = pci_read_vpd_any(sky2->hw->pdev, eeprom->offset, eeprom->len,
4280 data);
4281 if (rc < 0)
4282 return rc;
4283
4284 eeprom->len = rc;
4285
4286 return 0;
4287}
4288
4289static int sky2_set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
4290 u8 *data)
4291{
4292 struct sky2_port *sky2 = netdev_priv(dev);
4293 int rc;
4294
4295 if (eeprom->magic != SKY2_EEPROM_MAGIC)
4296 return -EINVAL;
4297
4298 rc = pci_write_vpd_any(sky2->hw->pdev, eeprom->offset, eeprom->len,
4299 data);
4300
4301 return rc < 0 ? rc : 0;
4302}
4303
4304static netdev_features_t sky2_fix_features(struct net_device *dev,
4305 netdev_features_t features)
4306{
4307 const struct sky2_port *sky2 = netdev_priv(dev);
4308 const struct sky2_hw *hw = sky2->hw;
4309
4310 /* In order to do Jumbo packets on these chips, need to turn off the
4311 * transmit store/forward. Therefore checksum offload won't work.
4312 */
4313 if (dev->mtu > ETH_DATA_LEN && hw->chip_id == CHIP_ID_YUKON_EC_U) {
4314 netdev_info(dev, "checksum offload not possible with jumbo frames\n");
4315 features &= ~(NETIF_F_TSO | NETIF_F_SG | NETIF_F_CSUM_MASK);
4316 }
4317
4318 /* Some hardware requires receive checksum for RSS to work. */
4319 if ( (features & NETIF_F_RXHASH) &&
4320 !(features & NETIF_F_RXCSUM) &&
4321 (sky2->hw->flags & SKY2_HW_RSS_CHKSUM)) {
4322 netdev_info(dev, "receive hashing forces receive checksum\n");
4323 features |= NETIF_F_RXCSUM;
4324 }
4325
4326 return features;
4327}
4328
4329static int sky2_set_features(struct net_device *dev, netdev_features_t features)
4330{
4331 struct sky2_port *sky2 = netdev_priv(dev);
4332 netdev_features_t changed = dev->features ^ features;
4333
4334 if ((changed & NETIF_F_RXCSUM) &&
4335 !(sky2->hw->flags & SKY2_HW_NEW_LE)) {
4336 sky2_write32(sky2->hw,
4337 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
4338 (features & NETIF_F_RXCSUM)
4339 ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
4340 }
4341
4342 if (changed & NETIF_F_RXHASH)
4343 rx_set_rss(dev, features);
4344
4345 if (changed & (NETIF_F_HW_VLAN_CTAG_TX|NETIF_F_HW_VLAN_CTAG_RX))
4346 sky2_vlan_mode(dev, features);
4347
4348 return 0;
4349}
4350
4351static const struct ethtool_ops sky2_ethtool_ops = {
4352 .supported_coalesce_params = ETHTOOL_COALESCE_USECS |
4353 ETHTOOL_COALESCE_MAX_FRAMES |
4354 ETHTOOL_COALESCE_RX_USECS_IRQ |
4355 ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ,
4356 .get_drvinfo = sky2_get_drvinfo,
4357 .get_wol = sky2_get_wol,
4358 .set_wol = sky2_set_wol,
4359 .get_msglevel = sky2_get_msglevel,
4360 .set_msglevel = sky2_set_msglevel,
4361 .nway_reset = sky2_nway_reset,
4362 .get_regs_len = sky2_get_regs_len,
4363 .get_regs = sky2_get_regs,
4364 .get_link = ethtool_op_get_link,
4365 .get_eeprom_len = sky2_get_eeprom_len,
4366 .get_eeprom = sky2_get_eeprom,
4367 .set_eeprom = sky2_set_eeprom,
4368 .get_strings = sky2_get_strings,
4369 .get_coalesce = sky2_get_coalesce,
4370 .set_coalesce = sky2_set_coalesce,
4371 .get_ringparam = sky2_get_ringparam,
4372 .set_ringparam = sky2_set_ringparam,
4373 .get_pauseparam = sky2_get_pauseparam,
4374 .set_pauseparam = sky2_set_pauseparam,
4375 .set_phys_id = sky2_set_phys_id,
4376 .get_sset_count = sky2_get_sset_count,
4377 .get_ethtool_stats = sky2_get_ethtool_stats,
4378 .get_link_ksettings = sky2_get_link_ksettings,
4379 .set_link_ksettings = sky2_set_link_ksettings,
4380};
4381
4382#ifdef CONFIG_SKY2_DEBUG
4383
4384static struct dentry *sky2_debug;
4385
4386static int sky2_debug_show(struct seq_file *seq, void *v)
4387{
4388 struct net_device *dev = seq->private;
4389 const struct sky2_port *sky2 = netdev_priv(dev);
4390 struct sky2_hw *hw = sky2->hw;
4391 unsigned port = sky2->port;
4392 unsigned idx, last;
4393 int sop;
4394
4395 seq_printf(seq, "IRQ src=%x mask=%x control=%x\n",
4396 sky2_read32(hw, B0_ISRC),
4397 sky2_read32(hw, B0_IMSK),
4398 sky2_read32(hw, B0_Y2_SP_ICR));
4399
4400 if (!netif_running(dev)) {
4401 seq_puts(seq, "network not running\n");
4402 return 0;
4403 }
4404
4405 napi_disable(&hw->napi);
4406 last = sky2_read16(hw, STAT_PUT_IDX);
4407
4408 seq_printf(seq, "Status ring %u\n", hw->st_size);
4409 if (hw->st_idx == last)
4410 seq_puts(seq, "Status ring (empty)\n");
4411 else {
4412 seq_puts(seq, "Status ring\n");
4413 for (idx = hw->st_idx; idx != last && idx < hw->st_size;
4414 idx = RING_NEXT(idx, hw->st_size)) {
4415 const struct sky2_status_le *le = hw->st_le + idx;
4416 seq_printf(seq, "[%d] %#x %d %#x\n",
4417 idx, le->opcode, le->length, le->status);
4418 }
4419 seq_puts(seq, "\n");
4420 }
4421
4422 seq_printf(seq, "Tx ring pending=%u...%u report=%d done=%d\n",
4423 sky2->tx_cons, sky2->tx_prod,
4424 sky2_read16(hw, port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
4425 sky2_read16(hw, Q_ADDR(txqaddr[port], Q_DONE)));
4426
4427 /* Dump contents of tx ring */
4428 sop = 1;
4429 for (idx = sky2->tx_next; idx != sky2->tx_prod && idx < sky2->tx_ring_size;
4430 idx = RING_NEXT(idx, sky2->tx_ring_size)) {
4431 const struct sky2_tx_le *le = sky2->tx_le + idx;
4432 u32 a = le32_to_cpu(le->addr);
4433
4434 if (sop)
4435 seq_printf(seq, "%u:", idx);
4436 sop = 0;
4437
4438 switch (le->opcode & ~HW_OWNER) {
4439 case OP_ADDR64:
4440 seq_printf(seq, " %#x:", a);
4441 break;
4442 case OP_LRGLEN:
4443 seq_printf(seq, " mtu=%d", a);
4444 break;
4445 case OP_VLAN:
4446 seq_printf(seq, " vlan=%d", be16_to_cpu(le->length));
4447 break;
4448 case OP_TCPLISW:
4449 seq_printf(seq, " csum=%#x", a);
4450 break;
4451 case OP_LARGESEND:
4452 seq_printf(seq, " tso=%#x(%d)", a, le16_to_cpu(le->length));
4453 break;
4454 case OP_PACKET:
4455 seq_printf(seq, " %#x(%d)", a, le16_to_cpu(le->length));
4456 break;
4457 case OP_BUFFER:
4458 seq_printf(seq, " frag=%#x(%d)", a, le16_to_cpu(le->length));
4459 break;
4460 default:
4461 seq_printf(seq, " op=%#x,%#x(%d)", le->opcode,
4462 a, le16_to_cpu(le->length));
4463 }
4464
4465 if (le->ctrl & EOP) {
4466 seq_putc(seq, '\n');
4467 sop = 1;
4468 }
4469 }
4470
4471 seq_printf(seq, "\nRx ring hw get=%d put=%d last=%d\n",
4472 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_GET_IDX)),
4473 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_PUT_IDX)),
4474 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_LAST_IDX)));
4475
4476 sky2_read32(hw, B0_Y2_SP_LISR);
4477 napi_enable(&hw->napi);
4478 return 0;
4479}
4480DEFINE_SHOW_ATTRIBUTE(sky2_debug);
4481
4482/*
4483 * Use network device events to create/remove/rename
4484 * debugfs file entries
4485 */
4486static int sky2_device_event(struct notifier_block *unused,
4487 unsigned long event, void *ptr)
4488{
4489 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
4490 struct sky2_port *sky2 = netdev_priv(dev);
4491
4492 if (dev->netdev_ops->ndo_open != sky2_open || !sky2_debug)
4493 return NOTIFY_DONE;
4494
4495 switch (event) {
4496 case NETDEV_CHANGENAME:
4497 if (sky2->debugfs) {
4498 sky2->debugfs = debugfs_rename(sky2_debug, sky2->debugfs,
4499 sky2_debug, dev->name);
4500 }
4501 break;
4502
4503 case NETDEV_GOING_DOWN:
4504 if (sky2->debugfs) {
4505 netdev_printk(KERN_DEBUG, dev, "remove debugfs\n");
4506 debugfs_remove(sky2->debugfs);
4507 sky2->debugfs = NULL;
4508 }
4509 break;
4510
4511 case NETDEV_UP:
4512 sky2->debugfs = debugfs_create_file(dev->name, 0444,
4513 sky2_debug, dev,
4514 &sky2_debug_fops);
4515 if (IS_ERR(sky2->debugfs))
4516 sky2->debugfs = NULL;
4517 }
4518
4519 return NOTIFY_DONE;
4520}
4521
4522static struct notifier_block sky2_notifier = {
4523 .notifier_call = sky2_device_event,
4524};
4525
4526
4527static __init void sky2_debug_init(void)
4528{
4529 struct dentry *ent;
4530
4531 ent = debugfs_create_dir("sky2", NULL);
4532 if (!ent || IS_ERR(ent))
4533 return;
4534
4535 sky2_debug = ent;
4536 register_netdevice_notifier(&sky2_notifier);
4537}
4538
4539static __exit void sky2_debug_cleanup(void)
4540{
4541 if (sky2_debug) {
4542 unregister_netdevice_notifier(&sky2_notifier);
4543 debugfs_remove(sky2_debug);
4544 sky2_debug = NULL;
4545 }
4546}
4547
4548#else
4549#define sky2_debug_init()
4550#define sky2_debug_cleanup()
4551#endif
4552
4553/* Two copies of network device operations to handle special case of
4554 * not allowing netpoll on second port
4555 */
4556static const struct net_device_ops sky2_netdev_ops[2] = {
4557 {
4558 .ndo_open = sky2_open,
4559 .ndo_stop = sky2_close,
4560 .ndo_start_xmit = sky2_xmit_frame,
4561 .ndo_eth_ioctl = sky2_ioctl,
4562 .ndo_validate_addr = eth_validate_addr,
4563 .ndo_set_mac_address = sky2_set_mac_address,
4564 .ndo_set_rx_mode = sky2_set_multicast,
4565 .ndo_change_mtu = sky2_change_mtu,
4566 .ndo_fix_features = sky2_fix_features,
4567 .ndo_set_features = sky2_set_features,
4568 .ndo_tx_timeout = sky2_tx_timeout,
4569 .ndo_get_stats64 = sky2_get_stats,
4570#ifdef CONFIG_NET_POLL_CONTROLLER
4571 .ndo_poll_controller = sky2_netpoll,
4572#endif
4573 },
4574 {
4575 .ndo_open = sky2_open,
4576 .ndo_stop = sky2_close,
4577 .ndo_start_xmit = sky2_xmit_frame,
4578 .ndo_eth_ioctl = sky2_ioctl,
4579 .ndo_validate_addr = eth_validate_addr,
4580 .ndo_set_mac_address = sky2_set_mac_address,
4581 .ndo_set_rx_mode = sky2_set_multicast,
4582 .ndo_change_mtu = sky2_change_mtu,
4583 .ndo_fix_features = sky2_fix_features,
4584 .ndo_set_features = sky2_set_features,
4585 .ndo_tx_timeout = sky2_tx_timeout,
4586 .ndo_get_stats64 = sky2_get_stats,
4587 },
4588};
4589
4590/* Initialize network device */
4591static struct net_device *sky2_init_netdev(struct sky2_hw *hw, unsigned port,
4592 int highmem, int wol)
4593{
4594 struct sky2_port *sky2;
4595 struct net_device *dev = alloc_etherdev(sizeof(*sky2));
4596 int ret;
4597
4598 if (!dev)
4599 return NULL;
4600
4601 SET_NETDEV_DEV(dev, &hw->pdev->dev);
4602 dev->irq = hw->pdev->irq;
4603 dev->ethtool_ops = &sky2_ethtool_ops;
4604 dev->watchdog_timeo = TX_WATCHDOG;
4605 dev->netdev_ops = &sky2_netdev_ops[port];
4606
4607 sky2 = netdev_priv(dev);
4608 sky2->netdev = dev;
4609 sky2->hw = hw;
4610 sky2->msg_enable = netif_msg_init(debug, default_msg);
4611
4612 u64_stats_init(&sky2->tx_stats.syncp);
4613 u64_stats_init(&sky2->rx_stats.syncp);
4614
4615 /* Auto speed and flow control */
4616 sky2->flags = SKY2_FLAG_AUTO_SPEED | SKY2_FLAG_AUTO_PAUSE;
4617 if (hw->chip_id != CHIP_ID_YUKON_XL)
4618 dev->hw_features |= NETIF_F_RXCSUM;
4619
4620 sky2->flow_mode = FC_BOTH;
4621
4622 sky2->duplex = -1;
4623 sky2->speed = -1;
4624 sky2->advertising = sky2_supported_modes(hw);
4625 sky2->wol = wol;
4626
4627 spin_lock_init(&sky2->phy_lock);
4628
4629 sky2->tx_pending = TX_DEF_PENDING;
4630 sky2->tx_ring_size = roundup_ring_size(TX_DEF_PENDING);
4631 sky2->rx_pending = RX_DEF_PENDING;
4632
4633 hw->dev[port] = dev;
4634
4635 sky2->port = port;
4636
4637 dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_TSO;
4638
4639 if (highmem)
4640 dev->features |= NETIF_F_HIGHDMA;
4641
4642 /* Enable receive hashing unless hardware is known broken */
4643 if (!(hw->flags & SKY2_HW_RSS_BROKEN))
4644 dev->hw_features |= NETIF_F_RXHASH;
4645
4646 if (!(hw->flags & SKY2_HW_VLAN_BROKEN)) {
4647 dev->hw_features |= NETIF_F_HW_VLAN_CTAG_TX |
4648 NETIF_F_HW_VLAN_CTAG_RX;
4649 dev->vlan_features |= SKY2_VLAN_OFFLOADS;
4650 }
4651
4652 dev->features |= dev->hw_features;
4653
4654 /* MTU range: 60 - 1500 or 9000 */
4655 dev->min_mtu = ETH_ZLEN;
4656 if (hw->chip_id == CHIP_ID_YUKON_FE ||
4657 hw->chip_id == CHIP_ID_YUKON_FE_P)
4658 dev->max_mtu = ETH_DATA_LEN;
4659 else
4660 dev->max_mtu = ETH_JUMBO_MTU;
4661
4662 /* try to get mac address in the following order:
4663 * 1) from device tree data
4664 * 2) from internal registers set by bootloader
4665 */
4666 ret = of_get_ethdev_address(hw->pdev->dev.of_node, dev);
4667 if (ret) {
4668 u8 addr[ETH_ALEN];
4669
4670 memcpy_fromio(addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN);
4671 eth_hw_addr_set(dev, addr);
4672 }
4673
4674 /* if the address is invalid, use a random value */
4675 if (!is_valid_ether_addr(dev->dev_addr)) {
4676 struct sockaddr sa = { AF_UNSPEC };
4677
4678 dev_warn(&hw->pdev->dev, "Invalid MAC address, defaulting to random\n");
4679 eth_hw_addr_random(dev);
4680 memcpy(sa.sa_data, dev->dev_addr, ETH_ALEN);
4681 if (sky2_set_mac_address(dev, &sa))
4682 dev_warn(&hw->pdev->dev, "Failed to set MAC address.\n");
4683 }
4684
4685 return dev;
4686}
4687
4688static void sky2_show_addr(struct net_device *dev)
4689{
4690 const struct sky2_port *sky2 = netdev_priv(dev);
4691
4692 netif_info(sky2, probe, dev, "addr %pM\n", dev->dev_addr);
4693}
4694
4695/* Handle software interrupt used during MSI test */
4696static irqreturn_t sky2_test_intr(int irq, void *dev_id)
4697{
4698 struct sky2_hw *hw = dev_id;
4699 u32 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
4700
4701 if (status == 0)
4702 return IRQ_NONE;
4703
4704 if (status & Y2_IS_IRQ_SW) {
4705 hw->flags |= SKY2_HW_USE_MSI;
4706 wake_up(&hw->msi_wait);
4707 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4708 }
4709 sky2_write32(hw, B0_Y2_SP_ICR, 2);
4710
4711 return IRQ_HANDLED;
4712}
4713
4714/* Test interrupt path by forcing a software IRQ */
4715static int sky2_test_msi(struct sky2_hw *hw)
4716{
4717 struct pci_dev *pdev = hw->pdev;
4718 int err;
4719
4720 init_waitqueue_head(&hw->msi_wait);
4721
4722 err = request_irq(pdev->irq, sky2_test_intr, 0, DRV_NAME, hw);
4723 if (err) {
4724 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
4725 return err;
4726 }
4727
4728 sky2_write32(hw, B0_IMSK, Y2_IS_IRQ_SW);
4729
4730 sky2_write8(hw, B0_CTST, CS_ST_SW_IRQ);
4731 sky2_read8(hw, B0_CTST);
4732
4733 wait_event_timeout(hw->msi_wait, (hw->flags & SKY2_HW_USE_MSI), HZ/10);
4734
4735 if (!(hw->flags & SKY2_HW_USE_MSI)) {
4736 /* MSI test failed, go back to INTx mode */
4737 dev_info(&pdev->dev, "No interrupt generated using MSI, "
4738 "switching to INTx mode.\n");
4739
4740 err = -EOPNOTSUPP;
4741 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4742 }
4743
4744 sky2_write32(hw, B0_IMSK, 0);
4745 sky2_read32(hw, B0_IMSK);
4746
4747 free_irq(pdev->irq, hw);
4748
4749 return err;
4750}
4751
4752/* This driver supports yukon2 chipset only */
4753static const char *sky2_name(u8 chipid, char *buf, int sz)
4754{
4755 static const char *const name[] = {
4756 "XL", /* 0xb3 */
4757 "EC Ultra", /* 0xb4 */
4758 "Extreme", /* 0xb5 */
4759 "EC", /* 0xb6 */
4760 "FE", /* 0xb7 */
4761 "FE+", /* 0xb8 */
4762 "Supreme", /* 0xb9 */
4763 "UL 2", /* 0xba */
4764 "Unknown", /* 0xbb */
4765 "Optima", /* 0xbc */
4766 "OptimaEEE", /* 0xbd */
4767 "Optima 2", /* 0xbe */
4768 };
4769
4770 if (chipid >= CHIP_ID_YUKON_XL && chipid <= CHIP_ID_YUKON_OP_2)
4771 snprintf(buf, sz, "%s", name[chipid - CHIP_ID_YUKON_XL]);
4772 else
4773 snprintf(buf, sz, "(chip %#x)", chipid);
4774 return buf;
4775}
4776
4777static const struct dmi_system_id msi_blacklist[] = {
4778 {
4779 .ident = "Dell Inspiron 1545",
4780 .matches = {
4781 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
4782 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1545"),
4783 },
4784 },
4785 {
4786 .ident = "Gateway P-79",
4787 .matches = {
4788 DMI_MATCH(DMI_SYS_VENDOR, "Gateway"),
4789 DMI_MATCH(DMI_PRODUCT_NAME, "P-79"),
4790 },
4791 },
4792 {
4793 .ident = "ASUS P5W DH Deluxe",
4794 .matches = {
4795 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTEK COMPUTER INC"),
4796 DMI_MATCH(DMI_PRODUCT_NAME, "P5W DH Deluxe"),
4797 },
4798 },
4799 {
4800 .ident = "ASUS P6T",
4801 .matches = {
4802 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
4803 DMI_MATCH(DMI_BOARD_NAME, "P6T"),
4804 },
4805 },
4806 {
4807 .ident = "ASUS P6X",
4808 .matches = {
4809 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
4810 DMI_MATCH(DMI_BOARD_NAME, "P6X"),
4811 },
4812 },
4813 {}
4814};
4815
4816static int sky2_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4817{
4818 struct net_device *dev, *dev1;
4819 struct sky2_hw *hw;
4820 int err, using_dac = 0, wol_default;
4821 u32 reg;
4822 char buf1[16];
4823
4824 err = pci_enable_device(pdev);
4825 if (err) {
4826 dev_err(&pdev->dev, "cannot enable PCI device\n");
4827 goto err_out;
4828 }
4829
4830 /* Get configuration information
4831 * Note: only regular PCI config access once to test for HW issues
4832 * other PCI access through shared memory for speed and to
4833 * avoid MMCONFIG problems.
4834 */
4835 err = pci_read_config_dword(pdev, PCI_DEV_REG2, ®);
4836 if (err) {
4837 dev_err(&pdev->dev, "PCI read config failed\n");
4838 goto err_out_disable;
4839 }
4840
4841 if (~reg == 0) {
4842 dev_err(&pdev->dev, "PCI configuration read error\n");
4843 err = -EIO;
4844 goto err_out_disable;
4845 }
4846
4847 err = pci_request_regions(pdev, DRV_NAME);
4848 if (err) {
4849 dev_err(&pdev->dev, "cannot obtain PCI resources\n");
4850 goto err_out_disable;
4851 }
4852
4853 pci_set_master(pdev);
4854
4855 if (sizeof(dma_addr_t) > sizeof(u32) &&
4856 !dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) {
4857 using_dac = 1;
4858 err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
4859 if (err < 0) {
4860 dev_err(&pdev->dev, "unable to obtain 64 bit DMA "
4861 "for consistent allocations\n");
4862 goto err_out_free_regions;
4863 }
4864 } else {
4865 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
4866 if (err) {
4867 dev_err(&pdev->dev, "no usable DMA configuration\n");
4868 goto err_out_free_regions;
4869 }
4870 }
4871
4872
4873#ifdef __BIG_ENDIAN
4874 /* The sk98lin vendor driver uses hardware byte swapping but
4875 * this driver uses software swapping.
4876 */
4877 reg &= ~PCI_REV_DESC;
4878 err = pci_write_config_dword(pdev, PCI_DEV_REG2, reg);
4879 if (err) {
4880 dev_err(&pdev->dev, "PCI write config failed\n");
4881 goto err_out_free_regions;
4882 }
4883#endif
4884
4885 wol_default = device_may_wakeup(&pdev->dev) ? WAKE_MAGIC : 0;
4886
4887 err = -ENOMEM;
4888
4889 hw = kzalloc(sizeof(*hw) + strlen(DRV_NAME "@pci:")
4890 + strlen(pci_name(pdev)) + 1, GFP_KERNEL);
4891 if (!hw)
4892 goto err_out_free_regions;
4893
4894 hw->pdev = pdev;
4895 sprintf(hw->irq_name, DRV_NAME "@pci:%s", pci_name(pdev));
4896
4897 hw->regs = ioremap(pci_resource_start(pdev, 0), 0x4000);
4898 if (!hw->regs) {
4899 dev_err(&pdev->dev, "cannot map device registers\n");
4900 goto err_out_free_hw;
4901 }
4902
4903 err = sky2_init(hw);
4904 if (err)
4905 goto err_out_iounmap;
4906
4907 /* ring for status responses */
4908 hw->st_size = hw->ports * roundup_pow_of_two(3*RX_MAX_PENDING + TX_MAX_PENDING);
4909 hw->st_le = dma_alloc_coherent(&pdev->dev,
4910 hw->st_size * sizeof(struct sky2_status_le),
4911 &hw->st_dma, GFP_KERNEL);
4912 if (!hw->st_le) {
4913 err = -ENOMEM;
4914 goto err_out_reset;
4915 }
4916
4917 dev_info(&pdev->dev, "Yukon-2 %s chip revision %d\n",
4918 sky2_name(hw->chip_id, buf1, sizeof(buf1)), hw->chip_rev);
4919
4920 sky2_reset(hw);
4921
4922 dev = sky2_init_netdev(hw, 0, using_dac, wol_default);
4923 if (!dev) {
4924 err = -ENOMEM;
4925 goto err_out_free_pci;
4926 }
4927
4928 if (disable_msi == -1)
4929 disable_msi = !!dmi_check_system(msi_blacklist);
4930
4931 if (!disable_msi && pci_enable_msi(pdev) == 0) {
4932 err = sky2_test_msi(hw);
4933 if (err) {
4934 pci_disable_msi(pdev);
4935 if (err != -EOPNOTSUPP)
4936 goto err_out_free_netdev;
4937 }
4938 }
4939
4940 netif_napi_add(dev, &hw->napi, sky2_poll);
4941
4942 err = register_netdev(dev);
4943 if (err) {
4944 dev_err(&pdev->dev, "cannot register net device\n");
4945 goto err_out_free_netdev;
4946 }
4947
4948 netif_carrier_off(dev);
4949
4950 sky2_show_addr(dev);
4951
4952 if (hw->ports > 1) {
4953 dev1 = sky2_init_netdev(hw, 1, using_dac, wol_default);
4954 if (!dev1) {
4955 err = -ENOMEM;
4956 goto err_out_unregister;
4957 }
4958
4959 err = register_netdev(dev1);
4960 if (err) {
4961 dev_err(&pdev->dev, "cannot register second net device\n");
4962 goto err_out_free_dev1;
4963 }
4964
4965 err = sky2_setup_irq(hw, hw->irq_name);
4966 if (err)
4967 goto err_out_unregister_dev1;
4968
4969 sky2_show_addr(dev1);
4970 }
4971
4972 timer_setup(&hw->watchdog_timer, sky2_watchdog, 0);
4973 INIT_WORK(&hw->restart_work, sky2_restart);
4974
4975 pci_set_drvdata(pdev, hw);
4976 pdev->d3hot_delay = 300;
4977
4978 return 0;
4979
4980err_out_unregister_dev1:
4981 unregister_netdev(dev1);
4982err_out_free_dev1:
4983 free_netdev(dev1);
4984err_out_unregister:
4985 unregister_netdev(dev);
4986err_out_free_netdev:
4987 if (hw->flags & SKY2_HW_USE_MSI)
4988 pci_disable_msi(pdev);
4989 free_netdev(dev);
4990err_out_free_pci:
4991 dma_free_coherent(&pdev->dev,
4992 hw->st_size * sizeof(struct sky2_status_le),
4993 hw->st_le, hw->st_dma);
4994err_out_reset:
4995 sky2_write8(hw, B0_CTST, CS_RST_SET);
4996err_out_iounmap:
4997 iounmap(hw->regs);
4998err_out_free_hw:
4999 kfree(hw);
5000err_out_free_regions:
5001 pci_release_regions(pdev);
5002err_out_disable:
5003 pci_disable_device(pdev);
5004err_out:
5005 return err;
5006}
5007
5008static void sky2_remove(struct pci_dev *pdev)
5009{
5010 struct sky2_hw *hw = pci_get_drvdata(pdev);
5011 int i;
5012
5013 if (!hw)
5014 return;
5015
5016 timer_shutdown_sync(&hw->watchdog_timer);
5017 cancel_work_sync(&hw->restart_work);
5018
5019 for (i = hw->ports-1; i >= 0; --i)
5020 unregister_netdev(hw->dev[i]);
5021
5022 sky2_write32(hw, B0_IMSK, 0);
5023 sky2_read32(hw, B0_IMSK);
5024
5025 sky2_power_aux(hw);
5026
5027 sky2_write8(hw, B0_CTST, CS_RST_SET);
5028 sky2_read8(hw, B0_CTST);
5029
5030 if (hw->ports > 1) {
5031 napi_disable(&hw->napi);
5032 free_irq(pdev->irq, hw);
5033 }
5034
5035 if (hw->flags & SKY2_HW_USE_MSI)
5036 pci_disable_msi(pdev);
5037 dma_free_coherent(&pdev->dev,
5038 hw->st_size * sizeof(struct sky2_status_le),
5039 hw->st_le, hw->st_dma);
5040 pci_release_regions(pdev);
5041 pci_disable_device(pdev);
5042
5043 for (i = hw->ports-1; i >= 0; --i)
5044 free_netdev(hw->dev[i]);
5045
5046 iounmap(hw->regs);
5047 kfree(hw);
5048}
5049
5050static int sky2_suspend(struct device *dev)
5051{
5052 struct sky2_hw *hw = dev_get_drvdata(dev);
5053 int i;
5054
5055 if (!hw)
5056 return 0;
5057
5058 del_timer_sync(&hw->watchdog_timer);
5059 cancel_work_sync(&hw->restart_work);
5060
5061 rtnl_lock();
5062
5063 sky2_all_down(hw);
5064 for (i = 0; i < hw->ports; i++) {
5065 struct net_device *dev = hw->dev[i];
5066 struct sky2_port *sky2 = netdev_priv(dev);
5067
5068 if (sky2->wol)
5069 sky2_wol_init(sky2);
5070 }
5071
5072 sky2_power_aux(hw);
5073 rtnl_unlock();
5074
5075 return 0;
5076}
5077
5078#ifdef CONFIG_PM_SLEEP
5079static int sky2_resume(struct device *dev)
5080{
5081 struct pci_dev *pdev = to_pci_dev(dev);
5082 struct sky2_hw *hw = pci_get_drvdata(pdev);
5083 int err;
5084
5085 if (!hw)
5086 return 0;
5087
5088 /* Re-enable all clocks */
5089 err = pci_write_config_dword(pdev, PCI_DEV_REG3, 0);
5090 if (err) {
5091 dev_err(&pdev->dev, "PCI write config failed\n");
5092 goto out;
5093 }
5094
5095 rtnl_lock();
5096 sky2_reset(hw);
5097 sky2_all_up(hw);
5098 rtnl_unlock();
5099
5100 return 0;
5101out:
5102
5103 dev_err(&pdev->dev, "resume failed (%d)\n", err);
5104 pci_disable_device(pdev);
5105 return err;
5106}
5107
5108static SIMPLE_DEV_PM_OPS(sky2_pm_ops, sky2_suspend, sky2_resume);
5109#define SKY2_PM_OPS (&sky2_pm_ops)
5110
5111#else
5112
5113#define SKY2_PM_OPS NULL
5114#endif
5115
5116static void sky2_shutdown(struct pci_dev *pdev)
5117{
5118 struct sky2_hw *hw = pci_get_drvdata(pdev);
5119 int port;
5120
5121 for (port = 0; port < hw->ports; port++) {
5122 struct net_device *ndev = hw->dev[port];
5123
5124 rtnl_lock();
5125 if (netif_running(ndev)) {
5126 dev_close(ndev);
5127 netif_device_detach(ndev);
5128 }
5129 rtnl_unlock();
5130 }
5131 sky2_suspend(&pdev->dev);
5132 pci_wake_from_d3(pdev, device_may_wakeup(&pdev->dev));
5133 pci_set_power_state(pdev, PCI_D3hot);
5134}
5135
5136static struct pci_driver sky2_driver = {
5137 .name = DRV_NAME,
5138 .id_table = sky2_id_table,
5139 .probe = sky2_probe,
5140 .remove = sky2_remove,
5141 .shutdown = sky2_shutdown,
5142 .driver.pm = SKY2_PM_OPS,
5143};
5144
5145static int __init sky2_init_module(void)
5146{
5147 pr_info("driver version " DRV_VERSION "\n");
5148
5149 sky2_debug_init();
5150 return pci_register_driver(&sky2_driver);
5151}
5152
5153static void __exit sky2_cleanup_module(void)
5154{
5155 pci_unregister_driver(&sky2_driver);
5156 sky2_debug_cleanup();
5157}
5158
5159module_init(sky2_init_module);
5160module_exit(sky2_cleanup_module);
5161
5162MODULE_DESCRIPTION("Marvell Yukon 2 Gigabit Ethernet driver");
5163MODULE_AUTHOR("Stephen Hemminger <shemminger@linux-foundation.org>");
5164MODULE_LICENSE("GPL");
5165MODULE_VERSION(DRV_VERSION);