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1/*
2 Written 1998-2000 by Donald Becker.
3
4 This software may be used and distributed according to the terms of
5 the GNU General Public License (GPL), incorporated herein by reference.
6 Drivers based on or derived from this code fall under the GPL and must
7 retain the authorship, copyright and license notice. This file is not
8 a complete program and may only be used when the entire operating
9 system is licensed under the GPL.
10
11 The author may be reached as becker@scyld.com, or C/O
12 Scyld Computing Corporation
13 410 Severn Ave., Suite 210
14 Annapolis MD 21403
15
16 Support information and updates available at
17 http://www.scyld.com/network/pci-skeleton.html
18
19 Linux kernel updates:
20
21 Version 2.51, Nov 17, 2001 (jgarzik):
22 - Add ethtool support
23 - Replace some MII-related magic numbers with constants
24
25*/
26
27#define DRV_NAME "fealnx"
28#define DRV_VERSION "2.52"
29#define DRV_RELDATE "Sep-11-2006"
30
31static int debug; /* 1-> print debug message */
32static int max_interrupt_work = 20;
33
34/* Maximum number of multicast addresses to filter (vs. Rx-all-multicast). */
35static int multicast_filter_limit = 32;
36
37/* Set the copy breakpoint for the copy-only-tiny-frames scheme. */
38/* Setting to > 1518 effectively disables this feature. */
39static int rx_copybreak;
40
41/* Used to pass the media type, etc. */
42/* Both 'options[]' and 'full_duplex[]' should exist for driver */
43/* interoperability. */
44/* The media type is usually passed in 'options[]'. */
45#define MAX_UNITS 8 /* More are supported, limit only on options */
46static int options[MAX_UNITS] = { -1, -1, -1, -1, -1, -1, -1, -1 };
47static int full_duplex[MAX_UNITS] = { -1, -1, -1, -1, -1, -1, -1, -1 };
48
49/* Operational parameters that are set at compile time. */
50/* Keep the ring sizes a power of two for compile efficiency. */
51/* The compiler will convert <unsigned>'%'<2^N> into a bit mask. */
52/* Making the Tx ring too large decreases the effectiveness of channel */
53/* bonding and packet priority. */
54/* There are no ill effects from too-large receive rings. */
55// 88-12-9 modify,
56// #define TX_RING_SIZE 16
57// #define RX_RING_SIZE 32
58#define TX_RING_SIZE 6
59#define RX_RING_SIZE 12
60#define TX_TOTAL_SIZE TX_RING_SIZE*sizeof(struct fealnx_desc)
61#define RX_TOTAL_SIZE RX_RING_SIZE*sizeof(struct fealnx_desc)
62
63/* Operational parameters that usually are not changed. */
64/* Time in jiffies before concluding the transmitter is hung. */
65#define TX_TIMEOUT (2*HZ)
66
67#define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer. */
68
69
70/* Include files, designed to support most kernel versions 2.0.0 and later. */
71#include <linux/module.h>
72#include <linux/kernel.h>
73#include <linux/string.h>
74#include <linux/timer.h>
75#include <linux/errno.h>
76#include <linux/ioport.h>
77#include <linux/interrupt.h>
78#include <linux/pci.h>
79#include <linux/netdevice.h>
80#include <linux/etherdevice.h>
81#include <linux/skbuff.h>
82#include <linux/init.h>
83#include <linux/mii.h>
84#include <linux/ethtool.h>
85#include <linux/crc32.h>
86#include <linux/delay.h>
87#include <linux/bitops.h>
88
89#include <asm/processor.h> /* Processor type for cache alignment. */
90#include <asm/io.h>
91#include <asm/uaccess.h>
92#include <asm/byteorder.h>
93
94/* These identify the driver base version and may not be removed. */
95static const char version[] __devinitconst =
96 KERN_INFO DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE "\n";
97
98
99/* This driver was written to use PCI memory space, however some x86 systems
100 work only with I/O space accesses. */
101#ifndef __alpha__
102#define USE_IO_OPS
103#endif
104
105/* Kernel compatibility defines, some common to David Hinds' PCMCIA package. */
106/* This is only in the support-all-kernels source code. */
107
108#define RUN_AT(x) (jiffies + (x))
109
110MODULE_AUTHOR("Myson or whoever");
111MODULE_DESCRIPTION("Myson MTD-8xx 100/10M Ethernet PCI Adapter Driver");
112MODULE_LICENSE("GPL");
113module_param(max_interrupt_work, int, 0);
114module_param(debug, int, 0);
115module_param(rx_copybreak, int, 0);
116module_param(multicast_filter_limit, int, 0);
117module_param_array(options, int, NULL, 0);
118module_param_array(full_duplex, int, NULL, 0);
119MODULE_PARM_DESC(max_interrupt_work, "fealnx maximum events handled per interrupt");
120MODULE_PARM_DESC(debug, "fealnx enable debugging (0-1)");
121MODULE_PARM_DESC(rx_copybreak, "fealnx copy breakpoint for copy-only-tiny-frames");
122MODULE_PARM_DESC(multicast_filter_limit, "fealnx maximum number of filtered multicast addresses");
123MODULE_PARM_DESC(options, "fealnx: Bits 0-3: media type, bit 17: full duplex");
124MODULE_PARM_DESC(full_duplex, "fealnx full duplex setting(s) (1)");
125
126enum {
127 MIN_REGION_SIZE = 136,
128};
129
130/* A chip capabilities table, matching the entries in pci_tbl[] above. */
131enum chip_capability_flags {
132 HAS_MII_XCVR,
133 HAS_CHIP_XCVR,
134};
135
136/* 89/6/13 add, */
137/* for different PHY */
138enum phy_type_flags {
139 MysonPHY = 1,
140 AhdocPHY = 2,
141 SeeqPHY = 3,
142 MarvellPHY = 4,
143 Myson981 = 5,
144 LevelOnePHY = 6,
145 OtherPHY = 10,
146};
147
148struct chip_info {
149 char *chip_name;
150 int flags;
151};
152
153static const struct chip_info skel_netdrv_tbl[] __devinitdata = {
154 { "100/10M Ethernet PCI Adapter", HAS_MII_XCVR },
155 { "100/10M Ethernet PCI Adapter", HAS_CHIP_XCVR },
156 { "1000/100/10M Ethernet PCI Adapter", HAS_MII_XCVR },
157};
158
159/* Offsets to the Command and Status Registers. */
160enum fealnx_offsets {
161 PAR0 = 0x0, /* physical address 0-3 */
162 PAR1 = 0x04, /* physical address 4-5 */
163 MAR0 = 0x08, /* multicast address 0-3 */
164 MAR1 = 0x0C, /* multicast address 4-7 */
165 FAR0 = 0x10, /* flow-control address 0-3 */
166 FAR1 = 0x14, /* flow-control address 4-5 */
167 TCRRCR = 0x18, /* receive & transmit configuration */
168 BCR = 0x1C, /* bus command */
169 TXPDR = 0x20, /* transmit polling demand */
170 RXPDR = 0x24, /* receive polling demand */
171 RXCWP = 0x28, /* receive current word pointer */
172 TXLBA = 0x2C, /* transmit list base address */
173 RXLBA = 0x30, /* receive list base address */
174 ISR = 0x34, /* interrupt status */
175 IMR = 0x38, /* interrupt mask */
176 FTH = 0x3C, /* flow control high/low threshold */
177 MANAGEMENT = 0x40, /* bootrom/eeprom and mii management */
178 TALLY = 0x44, /* tally counters for crc and mpa */
179 TSR = 0x48, /* tally counter for transmit status */
180 BMCRSR = 0x4c, /* basic mode control and status */
181 PHYIDENTIFIER = 0x50, /* phy identifier */
182 ANARANLPAR = 0x54, /* auto-negotiation advertisement and link
183 partner ability */
184 ANEROCR = 0x58, /* auto-negotiation expansion and pci conf. */
185 BPREMRPSR = 0x5c, /* bypass & receive error mask and phy status */
186};
187
188/* Bits in the interrupt status/enable registers. */
189/* The bits in the Intr Status/Enable registers, mostly interrupt sources. */
190enum intr_status_bits {
191 RFCON = 0x00020000, /* receive flow control xon packet */
192 RFCOFF = 0x00010000, /* receive flow control xoff packet */
193 LSCStatus = 0x00008000, /* link status change */
194 ANCStatus = 0x00004000, /* autonegotiation completed */
195 FBE = 0x00002000, /* fatal bus error */
196 FBEMask = 0x00001800, /* mask bit12-11 */
197 ParityErr = 0x00000000, /* parity error */
198 TargetErr = 0x00001000, /* target abort */
199 MasterErr = 0x00000800, /* master error */
200 TUNF = 0x00000400, /* transmit underflow */
201 ROVF = 0x00000200, /* receive overflow */
202 ETI = 0x00000100, /* transmit early int */
203 ERI = 0x00000080, /* receive early int */
204 CNTOVF = 0x00000040, /* counter overflow */
205 RBU = 0x00000020, /* receive buffer unavailable */
206 TBU = 0x00000010, /* transmit buffer unavilable */
207 TI = 0x00000008, /* transmit interrupt */
208 RI = 0x00000004, /* receive interrupt */
209 RxErr = 0x00000002, /* receive error */
210};
211
212/* Bits in the NetworkConfig register, W for writing, R for reading */
213/* FIXME: some names are invented by me. Marked with (name?) */
214/* If you have docs and know bit names, please fix 'em */
215enum rx_mode_bits {
216 CR_W_ENH = 0x02000000, /* enhanced mode (name?) */
217 CR_W_FD = 0x00100000, /* full duplex */
218 CR_W_PS10 = 0x00080000, /* 10 mbit */
219 CR_W_TXEN = 0x00040000, /* tx enable (name?) */
220 CR_W_PS1000 = 0x00010000, /* 1000 mbit */
221 /* CR_W_RXBURSTMASK= 0x00000e00, Im unsure about this */
222 CR_W_RXMODEMASK = 0x000000e0,
223 CR_W_PROM = 0x00000080, /* promiscuous mode */
224 CR_W_AB = 0x00000040, /* accept broadcast */
225 CR_W_AM = 0x00000020, /* accept mutlicast */
226 CR_W_ARP = 0x00000008, /* receive runt pkt */
227 CR_W_ALP = 0x00000004, /* receive long pkt */
228 CR_W_SEP = 0x00000002, /* receive error pkt */
229 CR_W_RXEN = 0x00000001, /* rx enable (unicast?) (name?) */
230
231 CR_R_TXSTOP = 0x04000000, /* tx stopped (name?) */
232 CR_R_FD = 0x00100000, /* full duplex detected */
233 CR_R_PS10 = 0x00080000, /* 10 mbit detected */
234 CR_R_RXSTOP = 0x00008000, /* rx stopped (name?) */
235};
236
237/* The Tulip Rx and Tx buffer descriptors. */
238struct fealnx_desc {
239 s32 status;
240 s32 control;
241 u32 buffer;
242 u32 next_desc;
243 struct fealnx_desc *next_desc_logical;
244 struct sk_buff *skbuff;
245 u32 reserved1;
246 u32 reserved2;
247};
248
249/* Bits in network_desc.status */
250enum rx_desc_status_bits {
251 RXOWN = 0x80000000, /* own bit */
252 FLNGMASK = 0x0fff0000, /* frame length */
253 FLNGShift = 16,
254 MARSTATUS = 0x00004000, /* multicast address received */
255 BARSTATUS = 0x00002000, /* broadcast address received */
256 PHYSTATUS = 0x00001000, /* physical address received */
257 RXFSD = 0x00000800, /* first descriptor */
258 RXLSD = 0x00000400, /* last descriptor */
259 ErrorSummary = 0x80, /* error summary */
260 RUNT = 0x40, /* runt packet received */
261 LONG = 0x20, /* long packet received */
262 FAE = 0x10, /* frame align error */
263 CRC = 0x08, /* crc error */
264 RXER = 0x04, /* receive error */
265};
266
267enum rx_desc_control_bits {
268 RXIC = 0x00800000, /* interrupt control */
269 RBSShift = 0,
270};
271
272enum tx_desc_status_bits {
273 TXOWN = 0x80000000, /* own bit */
274 JABTO = 0x00004000, /* jabber timeout */
275 CSL = 0x00002000, /* carrier sense lost */
276 LC = 0x00001000, /* late collision */
277 EC = 0x00000800, /* excessive collision */
278 UDF = 0x00000400, /* fifo underflow */
279 DFR = 0x00000200, /* deferred */
280 HF = 0x00000100, /* heartbeat fail */
281 NCRMask = 0x000000ff, /* collision retry count */
282 NCRShift = 0,
283};
284
285enum tx_desc_control_bits {
286 TXIC = 0x80000000, /* interrupt control */
287 ETIControl = 0x40000000, /* early transmit interrupt */
288 TXLD = 0x20000000, /* last descriptor */
289 TXFD = 0x10000000, /* first descriptor */
290 CRCEnable = 0x08000000, /* crc control */
291 PADEnable = 0x04000000, /* padding control */
292 RetryTxLC = 0x02000000, /* retry late collision */
293 PKTSMask = 0x3ff800, /* packet size bit21-11 */
294 PKTSShift = 11,
295 TBSMask = 0x000007ff, /* transmit buffer bit 10-0 */
296 TBSShift = 0,
297};
298
299/* BootROM/EEPROM/MII Management Register */
300#define MASK_MIIR_MII_READ 0x00000000
301#define MASK_MIIR_MII_WRITE 0x00000008
302#define MASK_MIIR_MII_MDO 0x00000004
303#define MASK_MIIR_MII_MDI 0x00000002
304#define MASK_MIIR_MII_MDC 0x00000001
305
306/* ST+OP+PHYAD+REGAD+TA */
307#define OP_READ 0x6000 /* ST:01+OP:10+PHYAD+REGAD+TA:Z0 */
308#define OP_WRITE 0x5002 /* ST:01+OP:01+PHYAD+REGAD+TA:10 */
309
310/* ------------------------------------------------------------------------- */
311/* Constants for Myson PHY */
312/* ------------------------------------------------------------------------- */
313#define MysonPHYID 0xd0000302
314/* 89-7-27 add, (begin) */
315#define MysonPHYID0 0x0302
316#define StatusRegister 18
317#define SPEED100 0x0400 // bit10
318#define FULLMODE 0x0800 // bit11
319/* 89-7-27 add, (end) */
320
321/* ------------------------------------------------------------------------- */
322/* Constants for Seeq 80225 PHY */
323/* ------------------------------------------------------------------------- */
324#define SeeqPHYID0 0x0016
325
326#define MIIRegister18 18
327#define SPD_DET_100 0x80
328#define DPLX_DET_FULL 0x40
329
330/* ------------------------------------------------------------------------- */
331/* Constants for Ahdoc 101 PHY */
332/* ------------------------------------------------------------------------- */
333#define AhdocPHYID0 0x0022
334
335#define DiagnosticReg 18
336#define DPLX_FULL 0x0800
337#define Speed_100 0x0400
338
339/* 89/6/13 add, */
340/* -------------------------------------------------------------------------- */
341/* Constants */
342/* -------------------------------------------------------------------------- */
343#define MarvellPHYID0 0x0141
344#define LevelOnePHYID0 0x0013
345
346#define MII1000BaseTControlReg 9
347#define MII1000BaseTStatusReg 10
348#define SpecificReg 17
349
350/* for 1000BaseT Control Register */
351#define PHYAbletoPerform1000FullDuplex 0x0200
352#define PHYAbletoPerform1000HalfDuplex 0x0100
353#define PHY1000AbilityMask 0x300
354
355// for phy specific status register, marvell phy.
356#define SpeedMask 0x0c000
357#define Speed_1000M 0x08000
358#define Speed_100M 0x4000
359#define Speed_10M 0
360#define Full_Duplex 0x2000
361
362// 89/12/29 add, for phy specific status register, levelone phy, (begin)
363#define LXT1000_100M 0x08000
364#define LXT1000_1000M 0x0c000
365#define LXT1000_Full 0x200
366// 89/12/29 add, for phy specific status register, levelone phy, (end)
367
368/* for 3-in-1 case, BMCRSR register */
369#define LinkIsUp2 0x00040000
370
371/* for PHY */
372#define LinkIsUp 0x0004
373
374
375struct netdev_private {
376 /* Descriptor rings first for alignment. */
377 struct fealnx_desc *rx_ring;
378 struct fealnx_desc *tx_ring;
379
380 dma_addr_t rx_ring_dma;
381 dma_addr_t tx_ring_dma;
382
383 spinlock_t lock;
384
385 /* Media monitoring timer. */
386 struct timer_list timer;
387
388 /* Reset timer */
389 struct timer_list reset_timer;
390 int reset_timer_armed;
391 unsigned long crvalue_sv;
392 unsigned long imrvalue_sv;
393
394 /* Frequently used values: keep some adjacent for cache effect. */
395 int flags;
396 struct pci_dev *pci_dev;
397 unsigned long crvalue;
398 unsigned long bcrvalue;
399 unsigned long imrvalue;
400 struct fealnx_desc *cur_rx;
401 struct fealnx_desc *lack_rxbuf;
402 int really_rx_count;
403 struct fealnx_desc *cur_tx;
404 struct fealnx_desc *cur_tx_copy;
405 int really_tx_count;
406 int free_tx_count;
407 unsigned int rx_buf_sz; /* Based on MTU+slack. */
408
409 /* These values are keep track of the transceiver/media in use. */
410 unsigned int linkok;
411 unsigned int line_speed;
412 unsigned int duplexmode;
413 unsigned int default_port:4; /* Last dev->if_port value. */
414 unsigned int PHYType;
415
416 /* MII transceiver section. */
417 int mii_cnt; /* MII device addresses. */
418 unsigned char phys[2]; /* MII device addresses. */
419 struct mii_if_info mii;
420 void __iomem *mem;
421};
422
423
424static int mdio_read(struct net_device *dev, int phy_id, int location);
425static void mdio_write(struct net_device *dev, int phy_id, int location, int value);
426static int netdev_open(struct net_device *dev);
427static void getlinktype(struct net_device *dev);
428static void getlinkstatus(struct net_device *dev);
429static void netdev_timer(unsigned long data);
430static void reset_timer(unsigned long data);
431static void fealnx_tx_timeout(struct net_device *dev);
432static void init_ring(struct net_device *dev);
433static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev);
434static irqreturn_t intr_handler(int irq, void *dev_instance);
435static int netdev_rx(struct net_device *dev);
436static void set_rx_mode(struct net_device *dev);
437static void __set_rx_mode(struct net_device *dev);
438static struct net_device_stats *get_stats(struct net_device *dev);
439static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
440static const struct ethtool_ops netdev_ethtool_ops;
441static int netdev_close(struct net_device *dev);
442static void reset_rx_descriptors(struct net_device *dev);
443static void reset_tx_descriptors(struct net_device *dev);
444
445static void stop_nic_rx(void __iomem *ioaddr, long crvalue)
446{
447 int delay = 0x1000;
448 iowrite32(crvalue & ~(CR_W_RXEN), ioaddr + TCRRCR);
449 while (--delay) {
450 if ( (ioread32(ioaddr + TCRRCR) & CR_R_RXSTOP) == CR_R_RXSTOP)
451 break;
452 }
453}
454
455
456static void stop_nic_rxtx(void __iomem *ioaddr, long crvalue)
457{
458 int delay = 0x1000;
459 iowrite32(crvalue & ~(CR_W_RXEN+CR_W_TXEN), ioaddr + TCRRCR);
460 while (--delay) {
461 if ( (ioread32(ioaddr + TCRRCR) & (CR_R_RXSTOP+CR_R_TXSTOP))
462 == (CR_R_RXSTOP+CR_R_TXSTOP) )
463 break;
464 }
465}
466
467static const struct net_device_ops netdev_ops = {
468 .ndo_open = netdev_open,
469 .ndo_stop = netdev_close,
470 .ndo_start_xmit = start_tx,
471 .ndo_get_stats = get_stats,
472 .ndo_set_multicast_list = set_rx_mode,
473 .ndo_do_ioctl = mii_ioctl,
474 .ndo_tx_timeout = fealnx_tx_timeout,
475 .ndo_change_mtu = eth_change_mtu,
476 .ndo_set_mac_address = eth_mac_addr,
477 .ndo_validate_addr = eth_validate_addr,
478};
479
480static int __devinit fealnx_init_one(struct pci_dev *pdev,
481 const struct pci_device_id *ent)
482{
483 struct netdev_private *np;
484 int i, option, err, irq;
485 static int card_idx = -1;
486 char boardname[12];
487 void __iomem *ioaddr;
488 unsigned long len;
489 unsigned int chip_id = ent->driver_data;
490 struct net_device *dev;
491 void *ring_space;
492 dma_addr_t ring_dma;
493#ifdef USE_IO_OPS
494 int bar = 0;
495#else
496 int bar = 1;
497#endif
498
499/* when built into the kernel, we only print version if device is found */
500#ifndef MODULE
501 static int printed_version;
502 if (!printed_version++)
503 printk(version);
504#endif
505
506 card_idx++;
507 sprintf(boardname, "fealnx%d", card_idx);
508
509 option = card_idx < MAX_UNITS ? options[card_idx] : 0;
510
511 i = pci_enable_device(pdev);
512 if (i) return i;
513 pci_set_master(pdev);
514
515 len = pci_resource_len(pdev, bar);
516 if (len < MIN_REGION_SIZE) {
517 dev_err(&pdev->dev,
518 "region size %ld too small, aborting\n", len);
519 return -ENODEV;
520 }
521
522 i = pci_request_regions(pdev, boardname);
523 if (i)
524 return i;
525
526 irq = pdev->irq;
527
528 ioaddr = pci_iomap(pdev, bar, len);
529 if (!ioaddr) {
530 err = -ENOMEM;
531 goto err_out_res;
532 }
533
534 dev = alloc_etherdev(sizeof(struct netdev_private));
535 if (!dev) {
536 err = -ENOMEM;
537 goto err_out_unmap;
538 }
539 SET_NETDEV_DEV(dev, &pdev->dev);
540
541 /* read ethernet id */
542 for (i = 0; i < 6; ++i)
543 dev->dev_addr[i] = ioread8(ioaddr + PAR0 + i);
544
545 /* Reset the chip to erase previous misconfiguration. */
546 iowrite32(0x00000001, ioaddr + BCR);
547
548 dev->base_addr = (unsigned long)ioaddr;
549 dev->irq = irq;
550
551 /* Make certain the descriptor lists are aligned. */
552 np = netdev_priv(dev);
553 np->mem = ioaddr;
554 spin_lock_init(&np->lock);
555 np->pci_dev = pdev;
556 np->flags = skel_netdrv_tbl[chip_id].flags;
557 pci_set_drvdata(pdev, dev);
558 np->mii.dev = dev;
559 np->mii.mdio_read = mdio_read;
560 np->mii.mdio_write = mdio_write;
561 np->mii.phy_id_mask = 0x1f;
562 np->mii.reg_num_mask = 0x1f;
563
564 ring_space = pci_alloc_consistent(pdev, RX_TOTAL_SIZE, &ring_dma);
565 if (!ring_space) {
566 err = -ENOMEM;
567 goto err_out_free_dev;
568 }
569 np->rx_ring = ring_space;
570 np->rx_ring_dma = ring_dma;
571
572 ring_space = pci_alloc_consistent(pdev, TX_TOTAL_SIZE, &ring_dma);
573 if (!ring_space) {
574 err = -ENOMEM;
575 goto err_out_free_rx;
576 }
577 np->tx_ring = ring_space;
578 np->tx_ring_dma = ring_dma;
579
580 /* find the connected MII xcvrs */
581 if (np->flags == HAS_MII_XCVR) {
582 int phy, phy_idx = 0;
583
584 for (phy = 1; phy < 32 && phy_idx < ARRAY_SIZE(np->phys);
585 phy++) {
586 int mii_status = mdio_read(dev, phy, 1);
587
588 if (mii_status != 0xffff && mii_status != 0x0000) {
589 np->phys[phy_idx++] = phy;
590 dev_info(&pdev->dev,
591 "MII PHY found at address %d, status "
592 "0x%4.4x.\n", phy, mii_status);
593 /* get phy type */
594 {
595 unsigned int data;
596
597 data = mdio_read(dev, np->phys[0], 2);
598 if (data == SeeqPHYID0)
599 np->PHYType = SeeqPHY;
600 else if (data == AhdocPHYID0)
601 np->PHYType = AhdocPHY;
602 else if (data == MarvellPHYID0)
603 np->PHYType = MarvellPHY;
604 else if (data == MysonPHYID0)
605 np->PHYType = Myson981;
606 else if (data == LevelOnePHYID0)
607 np->PHYType = LevelOnePHY;
608 else
609 np->PHYType = OtherPHY;
610 }
611 }
612 }
613
614 np->mii_cnt = phy_idx;
615 if (phy_idx == 0)
616 dev_warn(&pdev->dev,
617 "MII PHY not found -- this device may "
618 "not operate correctly.\n");
619 } else {
620 np->phys[0] = 32;
621/* 89/6/23 add, (begin) */
622 /* get phy type */
623 if (ioread32(ioaddr + PHYIDENTIFIER) == MysonPHYID)
624 np->PHYType = MysonPHY;
625 else
626 np->PHYType = OtherPHY;
627 }
628 np->mii.phy_id = np->phys[0];
629
630 if (dev->mem_start)
631 option = dev->mem_start;
632
633 /* The lower four bits are the media type. */
634 if (option > 0) {
635 if (option & 0x200)
636 np->mii.full_duplex = 1;
637 np->default_port = option & 15;
638 }
639
640 if (card_idx < MAX_UNITS && full_duplex[card_idx] > 0)
641 np->mii.full_duplex = full_duplex[card_idx];
642
643 if (np->mii.full_duplex) {
644 dev_info(&pdev->dev, "Media type forced to Full Duplex.\n");
645/* 89/6/13 add, (begin) */
646// if (np->PHYType==MarvellPHY)
647 if ((np->PHYType == MarvellPHY) || (np->PHYType == LevelOnePHY)) {
648 unsigned int data;
649
650 data = mdio_read(dev, np->phys[0], 9);
651 data = (data & 0xfcff) | 0x0200;
652 mdio_write(dev, np->phys[0], 9, data);
653 }
654/* 89/6/13 add, (end) */
655 if (np->flags == HAS_MII_XCVR)
656 mdio_write(dev, np->phys[0], MII_ADVERTISE, ADVERTISE_FULL);
657 else
658 iowrite32(ADVERTISE_FULL, ioaddr + ANARANLPAR);
659 np->mii.force_media = 1;
660 }
661
662 dev->netdev_ops = &netdev_ops;
663 dev->ethtool_ops = &netdev_ethtool_ops;
664 dev->watchdog_timeo = TX_TIMEOUT;
665
666 err = register_netdev(dev);
667 if (err)
668 goto err_out_free_tx;
669
670 printk(KERN_INFO "%s: %s at %p, %pM, IRQ %d.\n",
671 dev->name, skel_netdrv_tbl[chip_id].chip_name, ioaddr,
672 dev->dev_addr, irq);
673
674 return 0;
675
676err_out_free_tx:
677 pci_free_consistent(pdev, TX_TOTAL_SIZE, np->tx_ring, np->tx_ring_dma);
678err_out_free_rx:
679 pci_free_consistent(pdev, RX_TOTAL_SIZE, np->rx_ring, np->rx_ring_dma);
680err_out_free_dev:
681 free_netdev(dev);
682err_out_unmap:
683 pci_iounmap(pdev, ioaddr);
684err_out_res:
685 pci_release_regions(pdev);
686 return err;
687}
688
689
690static void __devexit fealnx_remove_one(struct pci_dev *pdev)
691{
692 struct net_device *dev = pci_get_drvdata(pdev);
693
694 if (dev) {
695 struct netdev_private *np = netdev_priv(dev);
696
697 pci_free_consistent(pdev, TX_TOTAL_SIZE, np->tx_ring,
698 np->tx_ring_dma);
699 pci_free_consistent(pdev, RX_TOTAL_SIZE, np->rx_ring,
700 np->rx_ring_dma);
701 unregister_netdev(dev);
702 pci_iounmap(pdev, np->mem);
703 free_netdev(dev);
704 pci_release_regions(pdev);
705 pci_set_drvdata(pdev, NULL);
706 } else
707 printk(KERN_ERR "fealnx: remove for unknown device\n");
708}
709
710
711static ulong m80x_send_cmd_to_phy(void __iomem *miiport, int opcode, int phyad, int regad)
712{
713 ulong miir;
714 int i;
715 unsigned int mask, data;
716
717 /* enable MII output */
718 miir = (ulong) ioread32(miiport);
719 miir &= 0xfffffff0;
720
721 miir |= MASK_MIIR_MII_WRITE + MASK_MIIR_MII_MDO;
722
723 /* send 32 1's preamble */
724 for (i = 0; i < 32; i++) {
725 /* low MDC; MDO is already high (miir) */
726 miir &= ~MASK_MIIR_MII_MDC;
727 iowrite32(miir, miiport);
728
729 /* high MDC */
730 miir |= MASK_MIIR_MII_MDC;
731 iowrite32(miir, miiport);
732 }
733
734 /* calculate ST+OP+PHYAD+REGAD+TA */
735 data = opcode | (phyad << 7) | (regad << 2);
736
737 /* sent out */
738 mask = 0x8000;
739 while (mask) {
740 /* low MDC, prepare MDO */
741 miir &= ~(MASK_MIIR_MII_MDC + MASK_MIIR_MII_MDO);
742 if (mask & data)
743 miir |= MASK_MIIR_MII_MDO;
744
745 iowrite32(miir, miiport);
746 /* high MDC */
747 miir |= MASK_MIIR_MII_MDC;
748 iowrite32(miir, miiport);
749 udelay(30);
750
751 /* next */
752 mask >>= 1;
753 if (mask == 0x2 && opcode == OP_READ)
754 miir &= ~MASK_MIIR_MII_WRITE;
755 }
756 return miir;
757}
758
759
760static int mdio_read(struct net_device *dev, int phyad, int regad)
761{
762 struct netdev_private *np = netdev_priv(dev);
763 void __iomem *miiport = np->mem + MANAGEMENT;
764 ulong miir;
765 unsigned int mask, data;
766
767 miir = m80x_send_cmd_to_phy(miiport, OP_READ, phyad, regad);
768
769 /* read data */
770 mask = 0x8000;
771 data = 0;
772 while (mask) {
773 /* low MDC */
774 miir &= ~MASK_MIIR_MII_MDC;
775 iowrite32(miir, miiport);
776
777 /* read MDI */
778 miir = ioread32(miiport);
779 if (miir & MASK_MIIR_MII_MDI)
780 data |= mask;
781
782 /* high MDC, and wait */
783 miir |= MASK_MIIR_MII_MDC;
784 iowrite32(miir, miiport);
785 udelay(30);
786
787 /* next */
788 mask >>= 1;
789 }
790
791 /* low MDC */
792 miir &= ~MASK_MIIR_MII_MDC;
793 iowrite32(miir, miiport);
794
795 return data & 0xffff;
796}
797
798
799static void mdio_write(struct net_device *dev, int phyad, int regad, int data)
800{
801 struct netdev_private *np = netdev_priv(dev);
802 void __iomem *miiport = np->mem + MANAGEMENT;
803 ulong miir;
804 unsigned int mask;
805
806 miir = m80x_send_cmd_to_phy(miiport, OP_WRITE, phyad, regad);
807
808 /* write data */
809 mask = 0x8000;
810 while (mask) {
811 /* low MDC, prepare MDO */
812 miir &= ~(MASK_MIIR_MII_MDC + MASK_MIIR_MII_MDO);
813 if (mask & data)
814 miir |= MASK_MIIR_MII_MDO;
815 iowrite32(miir, miiport);
816
817 /* high MDC */
818 miir |= MASK_MIIR_MII_MDC;
819 iowrite32(miir, miiport);
820
821 /* next */
822 mask >>= 1;
823 }
824
825 /* low MDC */
826 miir &= ~MASK_MIIR_MII_MDC;
827 iowrite32(miir, miiport);
828}
829
830
831static int netdev_open(struct net_device *dev)
832{
833 struct netdev_private *np = netdev_priv(dev);
834 void __iomem *ioaddr = np->mem;
835 int i;
836
837 iowrite32(0x00000001, ioaddr + BCR); /* Reset */
838
839 if (request_irq(dev->irq, intr_handler, IRQF_SHARED, dev->name, dev))
840 return -EAGAIN;
841
842 for (i = 0; i < 3; i++)
843 iowrite16(((unsigned short*)dev->dev_addr)[i],
844 ioaddr + PAR0 + i*2);
845
846 init_ring(dev);
847
848 iowrite32(np->rx_ring_dma, ioaddr + RXLBA);
849 iowrite32(np->tx_ring_dma, ioaddr + TXLBA);
850
851 /* Initialize other registers. */
852 /* Configure the PCI bus bursts and FIFO thresholds.
853 486: Set 8 longword burst.
854 586: no burst limit.
855 Burst length 5:3
856 0 0 0 1
857 0 0 1 4
858 0 1 0 8
859 0 1 1 16
860 1 0 0 32
861 1 0 1 64
862 1 1 0 128
863 1 1 1 256
864 Wait the specified 50 PCI cycles after a reset by initializing
865 Tx and Rx queues and the address filter list.
866 FIXME (Ueimor): optimistic for alpha + posted writes ? */
867
868 np->bcrvalue = 0x10; /* little-endian, 8 burst length */
869#ifdef __BIG_ENDIAN
870 np->bcrvalue |= 0x04; /* big-endian */
871#endif
872
873#if defined(__i386__) && !defined(MODULE)
874 if (boot_cpu_data.x86 <= 4)
875 np->crvalue = 0xa00;
876 else
877#endif
878 np->crvalue = 0xe00; /* rx 128 burst length */
879
880
881// 89/12/29 add,
882// 90/1/16 modify,
883// np->imrvalue=FBE|TUNF|CNTOVF|RBU|TI|RI;
884 np->imrvalue = TUNF | CNTOVF | RBU | TI | RI;
885 if (np->pci_dev->device == 0x891) {
886 np->bcrvalue |= 0x200; /* set PROG bit */
887 np->crvalue |= CR_W_ENH; /* set enhanced bit */
888 np->imrvalue |= ETI;
889 }
890 iowrite32(np->bcrvalue, ioaddr + BCR);
891
892 if (dev->if_port == 0)
893 dev->if_port = np->default_port;
894
895 iowrite32(0, ioaddr + RXPDR);
896// 89/9/1 modify,
897// np->crvalue = 0x00e40001; /* tx store and forward, tx/rx enable */
898 np->crvalue |= 0x00e40001; /* tx store and forward, tx/rx enable */
899 np->mii.full_duplex = np->mii.force_media;
900 getlinkstatus(dev);
901 if (np->linkok)
902 getlinktype(dev);
903 __set_rx_mode(dev);
904
905 netif_start_queue(dev);
906
907 /* Clear and Enable interrupts by setting the interrupt mask. */
908 iowrite32(FBE | TUNF | CNTOVF | RBU | TI | RI, ioaddr + ISR);
909 iowrite32(np->imrvalue, ioaddr + IMR);
910
911 if (debug)
912 printk(KERN_DEBUG "%s: Done netdev_open().\n", dev->name);
913
914 /* Set the timer to check for link beat. */
915 init_timer(&np->timer);
916 np->timer.expires = RUN_AT(3 * HZ);
917 np->timer.data = (unsigned long) dev;
918 np->timer.function = netdev_timer;
919
920 /* timer handler */
921 add_timer(&np->timer);
922
923 init_timer(&np->reset_timer);
924 np->reset_timer.data = (unsigned long) dev;
925 np->reset_timer.function = reset_timer;
926 np->reset_timer_armed = 0;
927
928 return 0;
929}
930
931
932static void getlinkstatus(struct net_device *dev)
933/* function: Routine will read MII Status Register to get link status. */
934/* input : dev... pointer to the adapter block. */
935/* output : none. */
936{
937 struct netdev_private *np = netdev_priv(dev);
938 unsigned int i, DelayTime = 0x1000;
939
940 np->linkok = 0;
941
942 if (np->PHYType == MysonPHY) {
943 for (i = 0; i < DelayTime; ++i) {
944 if (ioread32(np->mem + BMCRSR) & LinkIsUp2) {
945 np->linkok = 1;
946 return;
947 }
948 udelay(100);
949 }
950 } else {
951 for (i = 0; i < DelayTime; ++i) {
952 if (mdio_read(dev, np->phys[0], MII_BMSR) & BMSR_LSTATUS) {
953 np->linkok = 1;
954 return;
955 }
956 udelay(100);
957 }
958 }
959}
960
961
962static void getlinktype(struct net_device *dev)
963{
964 struct netdev_private *np = netdev_priv(dev);
965
966 if (np->PHYType == MysonPHY) { /* 3-in-1 case */
967 if (ioread32(np->mem + TCRRCR) & CR_R_FD)
968 np->duplexmode = 2; /* full duplex */
969 else
970 np->duplexmode = 1; /* half duplex */
971 if (ioread32(np->mem + TCRRCR) & CR_R_PS10)
972 np->line_speed = 1; /* 10M */
973 else
974 np->line_speed = 2; /* 100M */
975 } else {
976 if (np->PHYType == SeeqPHY) { /* this PHY is SEEQ 80225 */
977 unsigned int data;
978
979 data = mdio_read(dev, np->phys[0], MIIRegister18);
980 if (data & SPD_DET_100)
981 np->line_speed = 2; /* 100M */
982 else
983 np->line_speed = 1; /* 10M */
984 if (data & DPLX_DET_FULL)
985 np->duplexmode = 2; /* full duplex mode */
986 else
987 np->duplexmode = 1; /* half duplex mode */
988 } else if (np->PHYType == AhdocPHY) {
989 unsigned int data;
990
991 data = mdio_read(dev, np->phys[0], DiagnosticReg);
992 if (data & Speed_100)
993 np->line_speed = 2; /* 100M */
994 else
995 np->line_speed = 1; /* 10M */
996 if (data & DPLX_FULL)
997 np->duplexmode = 2; /* full duplex mode */
998 else
999 np->duplexmode = 1; /* half duplex mode */
1000 }
1001/* 89/6/13 add, (begin) */
1002 else if (np->PHYType == MarvellPHY) {
1003 unsigned int data;
1004
1005 data = mdio_read(dev, np->phys[0], SpecificReg);
1006 if (data & Full_Duplex)
1007 np->duplexmode = 2; /* full duplex mode */
1008 else
1009 np->duplexmode = 1; /* half duplex mode */
1010 data &= SpeedMask;
1011 if (data == Speed_1000M)
1012 np->line_speed = 3; /* 1000M */
1013 else if (data == Speed_100M)
1014 np->line_speed = 2; /* 100M */
1015 else
1016 np->line_speed = 1; /* 10M */
1017 }
1018/* 89/6/13 add, (end) */
1019/* 89/7/27 add, (begin) */
1020 else if (np->PHYType == Myson981) {
1021 unsigned int data;
1022
1023 data = mdio_read(dev, np->phys[0], StatusRegister);
1024
1025 if (data & SPEED100)
1026 np->line_speed = 2;
1027 else
1028 np->line_speed = 1;
1029
1030 if (data & FULLMODE)
1031 np->duplexmode = 2;
1032 else
1033 np->duplexmode = 1;
1034 }
1035/* 89/7/27 add, (end) */
1036/* 89/12/29 add */
1037 else if (np->PHYType == LevelOnePHY) {
1038 unsigned int data;
1039
1040 data = mdio_read(dev, np->phys[0], SpecificReg);
1041 if (data & LXT1000_Full)
1042 np->duplexmode = 2; /* full duplex mode */
1043 else
1044 np->duplexmode = 1; /* half duplex mode */
1045 data &= SpeedMask;
1046 if (data == LXT1000_1000M)
1047 np->line_speed = 3; /* 1000M */
1048 else if (data == LXT1000_100M)
1049 np->line_speed = 2; /* 100M */
1050 else
1051 np->line_speed = 1; /* 10M */
1052 }
1053 np->crvalue &= (~CR_W_PS10) & (~CR_W_FD) & (~CR_W_PS1000);
1054 if (np->line_speed == 1)
1055 np->crvalue |= CR_W_PS10;
1056 else if (np->line_speed == 3)
1057 np->crvalue |= CR_W_PS1000;
1058 if (np->duplexmode == 2)
1059 np->crvalue |= CR_W_FD;
1060 }
1061}
1062
1063
1064/* Take lock before calling this */
1065static void allocate_rx_buffers(struct net_device *dev)
1066{
1067 struct netdev_private *np = netdev_priv(dev);
1068
1069 /* allocate skb for rx buffers */
1070 while (np->really_rx_count != RX_RING_SIZE) {
1071 struct sk_buff *skb;
1072
1073 skb = dev_alloc_skb(np->rx_buf_sz);
1074 if (skb == NULL)
1075 break; /* Better luck next round. */
1076
1077 while (np->lack_rxbuf->skbuff)
1078 np->lack_rxbuf = np->lack_rxbuf->next_desc_logical;
1079
1080 skb->dev = dev; /* Mark as being used by this device. */
1081 np->lack_rxbuf->skbuff = skb;
1082 np->lack_rxbuf->buffer = pci_map_single(np->pci_dev, skb->data,
1083 np->rx_buf_sz, PCI_DMA_FROMDEVICE);
1084 np->lack_rxbuf->status = RXOWN;
1085 ++np->really_rx_count;
1086 }
1087}
1088
1089
1090static void netdev_timer(unsigned long data)
1091{
1092 struct net_device *dev = (struct net_device *) data;
1093 struct netdev_private *np = netdev_priv(dev);
1094 void __iomem *ioaddr = np->mem;
1095 int old_crvalue = np->crvalue;
1096 unsigned int old_linkok = np->linkok;
1097 unsigned long flags;
1098
1099 if (debug)
1100 printk(KERN_DEBUG "%s: Media selection timer tick, status %8.8x "
1101 "config %8.8x.\n", dev->name, ioread32(ioaddr + ISR),
1102 ioread32(ioaddr + TCRRCR));
1103
1104 spin_lock_irqsave(&np->lock, flags);
1105
1106 if (np->flags == HAS_MII_XCVR) {
1107 getlinkstatus(dev);
1108 if ((old_linkok == 0) && (np->linkok == 1)) { /* we need to detect the media type again */
1109 getlinktype(dev);
1110 if (np->crvalue != old_crvalue) {
1111 stop_nic_rxtx(ioaddr, np->crvalue);
1112 iowrite32(np->crvalue, ioaddr + TCRRCR);
1113 }
1114 }
1115 }
1116
1117 allocate_rx_buffers(dev);
1118
1119 spin_unlock_irqrestore(&np->lock, flags);
1120
1121 np->timer.expires = RUN_AT(10 * HZ);
1122 add_timer(&np->timer);
1123}
1124
1125
1126/* Take lock before calling */
1127/* Reset chip and disable rx, tx and interrupts */
1128static void reset_and_disable_rxtx(struct net_device *dev)
1129{
1130 struct netdev_private *np = netdev_priv(dev);
1131 void __iomem *ioaddr = np->mem;
1132 int delay=51;
1133
1134 /* Reset the chip's Tx and Rx processes. */
1135 stop_nic_rxtx(ioaddr, 0);
1136
1137 /* Disable interrupts by clearing the interrupt mask. */
1138 iowrite32(0, ioaddr + IMR);
1139
1140 /* Reset the chip to erase previous misconfiguration. */
1141 iowrite32(0x00000001, ioaddr + BCR);
1142
1143 /* Ueimor: wait for 50 PCI cycles (and flush posted writes btw).
1144 We surely wait too long (address+data phase). Who cares? */
1145 while (--delay) {
1146 ioread32(ioaddr + BCR);
1147 rmb();
1148 }
1149}
1150
1151
1152/* Take lock before calling */
1153/* Restore chip after reset */
1154static void enable_rxtx(struct net_device *dev)
1155{
1156 struct netdev_private *np = netdev_priv(dev);
1157 void __iomem *ioaddr = np->mem;
1158
1159 reset_rx_descriptors(dev);
1160
1161 iowrite32(np->tx_ring_dma + ((char*)np->cur_tx - (char*)np->tx_ring),
1162 ioaddr + TXLBA);
1163 iowrite32(np->rx_ring_dma + ((char*)np->cur_rx - (char*)np->rx_ring),
1164 ioaddr + RXLBA);
1165
1166 iowrite32(np->bcrvalue, ioaddr + BCR);
1167
1168 iowrite32(0, ioaddr + RXPDR);
1169 __set_rx_mode(dev); /* changes np->crvalue, writes it into TCRRCR */
1170
1171 /* Clear and Enable interrupts by setting the interrupt mask. */
1172 iowrite32(FBE | TUNF | CNTOVF | RBU | TI | RI, ioaddr + ISR);
1173 iowrite32(np->imrvalue, ioaddr + IMR);
1174
1175 iowrite32(0, ioaddr + TXPDR);
1176}
1177
1178
1179static void reset_timer(unsigned long data)
1180{
1181 struct net_device *dev = (struct net_device *) data;
1182 struct netdev_private *np = netdev_priv(dev);
1183 unsigned long flags;
1184
1185 printk(KERN_WARNING "%s: resetting tx and rx machinery\n", dev->name);
1186
1187 spin_lock_irqsave(&np->lock, flags);
1188 np->crvalue = np->crvalue_sv;
1189 np->imrvalue = np->imrvalue_sv;
1190
1191 reset_and_disable_rxtx(dev);
1192 /* works for me without this:
1193 reset_tx_descriptors(dev); */
1194 enable_rxtx(dev);
1195 netif_start_queue(dev); /* FIXME: or netif_wake_queue(dev); ? */
1196
1197 np->reset_timer_armed = 0;
1198
1199 spin_unlock_irqrestore(&np->lock, flags);
1200}
1201
1202
1203static void fealnx_tx_timeout(struct net_device *dev)
1204{
1205 struct netdev_private *np = netdev_priv(dev);
1206 void __iomem *ioaddr = np->mem;
1207 unsigned long flags;
1208 int i;
1209
1210 printk(KERN_WARNING
1211 "%s: Transmit timed out, status %8.8x, resetting...\n",
1212 dev->name, ioread32(ioaddr + ISR));
1213
1214 {
1215 printk(KERN_DEBUG " Rx ring %p: ", np->rx_ring);
1216 for (i = 0; i < RX_RING_SIZE; i++)
1217 printk(KERN_CONT " %8.8x",
1218 (unsigned int) np->rx_ring[i].status);
1219 printk(KERN_CONT "\n");
1220 printk(KERN_DEBUG " Tx ring %p: ", np->tx_ring);
1221 for (i = 0; i < TX_RING_SIZE; i++)
1222 printk(KERN_CONT " %4.4x", np->tx_ring[i].status);
1223 printk(KERN_CONT "\n");
1224 }
1225
1226 spin_lock_irqsave(&np->lock, flags);
1227
1228 reset_and_disable_rxtx(dev);
1229 reset_tx_descriptors(dev);
1230 enable_rxtx(dev);
1231
1232 spin_unlock_irqrestore(&np->lock, flags);
1233
1234 dev->trans_start = jiffies; /* prevent tx timeout */
1235 dev->stats.tx_errors++;
1236 netif_wake_queue(dev); /* or .._start_.. ?? */
1237}
1238
1239
1240/* Initialize the Rx and Tx rings, along with various 'dev' bits. */
1241static void init_ring(struct net_device *dev)
1242{
1243 struct netdev_private *np = netdev_priv(dev);
1244 int i;
1245
1246 /* initialize rx variables */
1247 np->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32);
1248 np->cur_rx = &np->rx_ring[0];
1249 np->lack_rxbuf = np->rx_ring;
1250 np->really_rx_count = 0;
1251
1252 /* initial rx descriptors. */
1253 for (i = 0; i < RX_RING_SIZE; i++) {
1254 np->rx_ring[i].status = 0;
1255 np->rx_ring[i].control = np->rx_buf_sz << RBSShift;
1256 np->rx_ring[i].next_desc = np->rx_ring_dma +
1257 (i + 1)*sizeof(struct fealnx_desc);
1258 np->rx_ring[i].next_desc_logical = &np->rx_ring[i + 1];
1259 np->rx_ring[i].skbuff = NULL;
1260 }
1261
1262 /* for the last rx descriptor */
1263 np->rx_ring[i - 1].next_desc = np->rx_ring_dma;
1264 np->rx_ring[i - 1].next_desc_logical = np->rx_ring;
1265
1266 /* allocate skb for rx buffers */
1267 for (i = 0; i < RX_RING_SIZE; i++) {
1268 struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz);
1269
1270 if (skb == NULL) {
1271 np->lack_rxbuf = &np->rx_ring[i];
1272 break;
1273 }
1274
1275 ++np->really_rx_count;
1276 np->rx_ring[i].skbuff = skb;
1277 skb->dev = dev; /* Mark as being used by this device. */
1278 np->rx_ring[i].buffer = pci_map_single(np->pci_dev, skb->data,
1279 np->rx_buf_sz, PCI_DMA_FROMDEVICE);
1280 np->rx_ring[i].status = RXOWN;
1281 np->rx_ring[i].control |= RXIC;
1282 }
1283
1284 /* initialize tx variables */
1285 np->cur_tx = &np->tx_ring[0];
1286 np->cur_tx_copy = &np->tx_ring[0];
1287 np->really_tx_count = 0;
1288 np->free_tx_count = TX_RING_SIZE;
1289
1290 for (i = 0; i < TX_RING_SIZE; i++) {
1291 np->tx_ring[i].status = 0;
1292 /* do we need np->tx_ring[i].control = XXX; ?? */
1293 np->tx_ring[i].next_desc = np->tx_ring_dma +
1294 (i + 1)*sizeof(struct fealnx_desc);
1295 np->tx_ring[i].next_desc_logical = &np->tx_ring[i + 1];
1296 np->tx_ring[i].skbuff = NULL;
1297 }
1298
1299 /* for the last tx descriptor */
1300 np->tx_ring[i - 1].next_desc = np->tx_ring_dma;
1301 np->tx_ring[i - 1].next_desc_logical = &np->tx_ring[0];
1302}
1303
1304
1305static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev)
1306{
1307 struct netdev_private *np = netdev_priv(dev);
1308 unsigned long flags;
1309
1310 spin_lock_irqsave(&np->lock, flags);
1311
1312 np->cur_tx_copy->skbuff = skb;
1313
1314#define one_buffer
1315#define BPT 1022
1316#if defined(one_buffer)
1317 np->cur_tx_copy->buffer = pci_map_single(np->pci_dev, skb->data,
1318 skb->len, PCI_DMA_TODEVICE);
1319 np->cur_tx_copy->control = TXIC | TXLD | TXFD | CRCEnable | PADEnable;
1320 np->cur_tx_copy->control |= (skb->len << PKTSShift); /* pkt size */
1321 np->cur_tx_copy->control |= (skb->len << TBSShift); /* buffer size */
1322// 89/12/29 add,
1323 if (np->pci_dev->device == 0x891)
1324 np->cur_tx_copy->control |= ETIControl | RetryTxLC;
1325 np->cur_tx_copy->status = TXOWN;
1326 np->cur_tx_copy = np->cur_tx_copy->next_desc_logical;
1327 --np->free_tx_count;
1328#elif defined(two_buffer)
1329 if (skb->len > BPT) {
1330 struct fealnx_desc *next;
1331
1332 /* for the first descriptor */
1333 np->cur_tx_copy->buffer = pci_map_single(np->pci_dev, skb->data,
1334 BPT, PCI_DMA_TODEVICE);
1335 np->cur_tx_copy->control = TXIC | TXFD | CRCEnable | PADEnable;
1336 np->cur_tx_copy->control |= (skb->len << PKTSShift); /* pkt size */
1337 np->cur_tx_copy->control |= (BPT << TBSShift); /* buffer size */
1338
1339 /* for the last descriptor */
1340 next = np->cur_tx_copy->next_desc_logical;
1341 next->skbuff = skb;
1342 next->control = TXIC | TXLD | CRCEnable | PADEnable;
1343 next->control |= (skb->len << PKTSShift); /* pkt size */
1344 next->control |= ((skb->len - BPT) << TBSShift); /* buf size */
1345// 89/12/29 add,
1346 if (np->pci_dev->device == 0x891)
1347 np->cur_tx_copy->control |= ETIControl | RetryTxLC;
1348 next->buffer = pci_map_single(ep->pci_dev, skb->data + BPT,
1349 skb->len - BPT, PCI_DMA_TODEVICE);
1350
1351 next->status = TXOWN;
1352 np->cur_tx_copy->status = TXOWN;
1353
1354 np->cur_tx_copy = next->next_desc_logical;
1355 np->free_tx_count -= 2;
1356 } else {
1357 np->cur_tx_copy->buffer = pci_map_single(np->pci_dev, skb->data,
1358 skb->len, PCI_DMA_TODEVICE);
1359 np->cur_tx_copy->control = TXIC | TXLD | TXFD | CRCEnable | PADEnable;
1360 np->cur_tx_copy->control |= (skb->len << PKTSShift); /* pkt size */
1361 np->cur_tx_copy->control |= (skb->len << TBSShift); /* buffer size */
1362// 89/12/29 add,
1363 if (np->pci_dev->device == 0x891)
1364 np->cur_tx_copy->control |= ETIControl | RetryTxLC;
1365 np->cur_tx_copy->status = TXOWN;
1366 np->cur_tx_copy = np->cur_tx_copy->next_desc_logical;
1367 --np->free_tx_count;
1368 }
1369#endif
1370
1371 if (np->free_tx_count < 2)
1372 netif_stop_queue(dev);
1373 ++np->really_tx_count;
1374 iowrite32(0, np->mem + TXPDR);
1375
1376 spin_unlock_irqrestore(&np->lock, flags);
1377 return NETDEV_TX_OK;
1378}
1379
1380
1381/* Take lock before calling */
1382/* Chip probably hosed tx ring. Clean up. */
1383static void reset_tx_descriptors(struct net_device *dev)
1384{
1385 struct netdev_private *np = netdev_priv(dev);
1386 struct fealnx_desc *cur;
1387 int i;
1388
1389 /* initialize tx variables */
1390 np->cur_tx = &np->tx_ring[0];
1391 np->cur_tx_copy = &np->tx_ring[0];
1392 np->really_tx_count = 0;
1393 np->free_tx_count = TX_RING_SIZE;
1394
1395 for (i = 0; i < TX_RING_SIZE; i++) {
1396 cur = &np->tx_ring[i];
1397 if (cur->skbuff) {
1398 pci_unmap_single(np->pci_dev, cur->buffer,
1399 cur->skbuff->len, PCI_DMA_TODEVICE);
1400 dev_kfree_skb_any(cur->skbuff);
1401 cur->skbuff = NULL;
1402 }
1403 cur->status = 0;
1404 cur->control = 0; /* needed? */
1405 /* probably not needed. We do it for purely paranoid reasons */
1406 cur->next_desc = np->tx_ring_dma +
1407 (i + 1)*sizeof(struct fealnx_desc);
1408 cur->next_desc_logical = &np->tx_ring[i + 1];
1409 }
1410 /* for the last tx descriptor */
1411 np->tx_ring[TX_RING_SIZE - 1].next_desc = np->tx_ring_dma;
1412 np->tx_ring[TX_RING_SIZE - 1].next_desc_logical = &np->tx_ring[0];
1413}
1414
1415
1416/* Take lock and stop rx before calling this */
1417static void reset_rx_descriptors(struct net_device *dev)
1418{
1419 struct netdev_private *np = netdev_priv(dev);
1420 struct fealnx_desc *cur = np->cur_rx;
1421 int i;
1422
1423 allocate_rx_buffers(dev);
1424
1425 for (i = 0; i < RX_RING_SIZE; i++) {
1426 if (cur->skbuff)
1427 cur->status = RXOWN;
1428 cur = cur->next_desc_logical;
1429 }
1430
1431 iowrite32(np->rx_ring_dma + ((char*)np->cur_rx - (char*)np->rx_ring),
1432 np->mem + RXLBA);
1433}
1434
1435
1436/* The interrupt handler does all of the Rx thread work and cleans up
1437 after the Tx thread. */
1438static irqreturn_t intr_handler(int irq, void *dev_instance)
1439{
1440 struct net_device *dev = (struct net_device *) dev_instance;
1441 struct netdev_private *np = netdev_priv(dev);
1442 void __iomem *ioaddr = np->mem;
1443 long boguscnt = max_interrupt_work;
1444 unsigned int num_tx = 0;
1445 int handled = 0;
1446
1447 spin_lock(&np->lock);
1448
1449 iowrite32(0, ioaddr + IMR);
1450
1451 do {
1452 u32 intr_status = ioread32(ioaddr + ISR);
1453
1454 /* Acknowledge all of the current interrupt sources ASAP. */
1455 iowrite32(intr_status, ioaddr + ISR);
1456
1457 if (debug)
1458 printk(KERN_DEBUG "%s: Interrupt, status %4.4x.\n", dev->name,
1459 intr_status);
1460
1461 if (!(intr_status & np->imrvalue))
1462 break;
1463
1464 handled = 1;
1465
1466// 90/1/16 delete,
1467//
1468// if (intr_status & FBE)
1469// { /* fatal error */
1470// stop_nic_tx(ioaddr, 0);
1471// stop_nic_rx(ioaddr, 0);
1472// break;
1473// };
1474
1475 if (intr_status & TUNF)
1476 iowrite32(0, ioaddr + TXPDR);
1477
1478 if (intr_status & CNTOVF) {
1479 /* missed pkts */
1480 dev->stats.rx_missed_errors +=
1481 ioread32(ioaddr + TALLY) & 0x7fff;
1482
1483 /* crc error */
1484 dev->stats.rx_crc_errors +=
1485 (ioread32(ioaddr + TALLY) & 0x7fff0000) >> 16;
1486 }
1487
1488 if (intr_status & (RI | RBU)) {
1489 if (intr_status & RI)
1490 netdev_rx(dev);
1491 else {
1492 stop_nic_rx(ioaddr, np->crvalue);
1493 reset_rx_descriptors(dev);
1494 iowrite32(np->crvalue, ioaddr + TCRRCR);
1495 }
1496 }
1497
1498 while (np->really_tx_count) {
1499 long tx_status = np->cur_tx->status;
1500 long tx_control = np->cur_tx->control;
1501
1502 if (!(tx_control & TXLD)) { /* this pkt is combined by two tx descriptors */
1503 struct fealnx_desc *next;
1504
1505 next = np->cur_tx->next_desc_logical;
1506 tx_status = next->status;
1507 tx_control = next->control;
1508 }
1509
1510 if (tx_status & TXOWN)
1511 break;
1512
1513 if (!(np->crvalue & CR_W_ENH)) {
1514 if (tx_status & (CSL | LC | EC | UDF | HF)) {
1515 dev->stats.tx_errors++;
1516 if (tx_status & EC)
1517 dev->stats.tx_aborted_errors++;
1518 if (tx_status & CSL)
1519 dev->stats.tx_carrier_errors++;
1520 if (tx_status & LC)
1521 dev->stats.tx_window_errors++;
1522 if (tx_status & UDF)
1523 dev->stats.tx_fifo_errors++;
1524 if ((tx_status & HF) && np->mii.full_duplex == 0)
1525 dev->stats.tx_heartbeat_errors++;
1526
1527 } else {
1528 dev->stats.tx_bytes +=
1529 ((tx_control & PKTSMask) >> PKTSShift);
1530
1531 dev->stats.collisions +=
1532 ((tx_status & NCRMask) >> NCRShift);
1533 dev->stats.tx_packets++;
1534 }
1535 } else {
1536 dev->stats.tx_bytes +=
1537 ((tx_control & PKTSMask) >> PKTSShift);
1538 dev->stats.tx_packets++;
1539 }
1540
1541 /* Free the original skb. */
1542 pci_unmap_single(np->pci_dev, np->cur_tx->buffer,
1543 np->cur_tx->skbuff->len, PCI_DMA_TODEVICE);
1544 dev_kfree_skb_irq(np->cur_tx->skbuff);
1545 np->cur_tx->skbuff = NULL;
1546 --np->really_tx_count;
1547 if (np->cur_tx->control & TXLD) {
1548 np->cur_tx = np->cur_tx->next_desc_logical;
1549 ++np->free_tx_count;
1550 } else {
1551 np->cur_tx = np->cur_tx->next_desc_logical;
1552 np->cur_tx = np->cur_tx->next_desc_logical;
1553 np->free_tx_count += 2;
1554 }
1555 num_tx++;
1556 } /* end of for loop */
1557
1558 if (num_tx && np->free_tx_count >= 2)
1559 netif_wake_queue(dev);
1560
1561 /* read transmit status for enhanced mode only */
1562 if (np->crvalue & CR_W_ENH) {
1563 long data;
1564
1565 data = ioread32(ioaddr + TSR);
1566 dev->stats.tx_errors += (data & 0xff000000) >> 24;
1567 dev->stats.tx_aborted_errors +=
1568 (data & 0xff000000) >> 24;
1569 dev->stats.tx_window_errors +=
1570 (data & 0x00ff0000) >> 16;
1571 dev->stats.collisions += (data & 0x0000ffff);
1572 }
1573
1574 if (--boguscnt < 0) {
1575 printk(KERN_WARNING "%s: Too much work at interrupt, "
1576 "status=0x%4.4x.\n", dev->name, intr_status);
1577 if (!np->reset_timer_armed) {
1578 np->reset_timer_armed = 1;
1579 np->reset_timer.expires = RUN_AT(HZ/2);
1580 add_timer(&np->reset_timer);
1581 stop_nic_rxtx(ioaddr, 0);
1582 netif_stop_queue(dev);
1583 /* or netif_tx_disable(dev); ?? */
1584 /* Prevent other paths from enabling tx,rx,intrs */
1585 np->crvalue_sv = np->crvalue;
1586 np->imrvalue_sv = np->imrvalue;
1587 np->crvalue &= ~(CR_W_TXEN | CR_W_RXEN); /* or simply = 0? */
1588 np->imrvalue = 0;
1589 }
1590
1591 break;
1592 }
1593 } while (1);
1594
1595 /* read the tally counters */
1596 /* missed pkts */
1597 dev->stats.rx_missed_errors += ioread32(ioaddr + TALLY) & 0x7fff;
1598
1599 /* crc error */
1600 dev->stats.rx_crc_errors +=
1601 (ioread32(ioaddr + TALLY) & 0x7fff0000) >> 16;
1602
1603 if (debug)
1604 printk(KERN_DEBUG "%s: exiting interrupt, status=%#4.4x.\n",
1605 dev->name, ioread32(ioaddr + ISR));
1606
1607 iowrite32(np->imrvalue, ioaddr + IMR);
1608
1609 spin_unlock(&np->lock);
1610
1611 return IRQ_RETVAL(handled);
1612}
1613
1614
1615/* This routine is logically part of the interrupt handler, but separated
1616 for clarity and better register allocation. */
1617static int netdev_rx(struct net_device *dev)
1618{
1619 struct netdev_private *np = netdev_priv(dev);
1620 void __iomem *ioaddr = np->mem;
1621
1622 /* If EOP is set on the next entry, it's a new packet. Send it up. */
1623 while (!(np->cur_rx->status & RXOWN) && np->cur_rx->skbuff) {
1624 s32 rx_status = np->cur_rx->status;
1625
1626 if (np->really_rx_count == 0)
1627 break;
1628
1629 if (debug)
1630 printk(KERN_DEBUG " netdev_rx() status was %8.8x.\n", rx_status);
1631
1632 if ((!((rx_status & RXFSD) && (rx_status & RXLSD))) ||
1633 (rx_status & ErrorSummary)) {
1634 if (rx_status & ErrorSummary) { /* there was a fatal error */
1635 if (debug)
1636 printk(KERN_DEBUG
1637 "%s: Receive error, Rx status %8.8x.\n",
1638 dev->name, rx_status);
1639
1640 dev->stats.rx_errors++; /* end of a packet. */
1641 if (rx_status & (LONG | RUNT))
1642 dev->stats.rx_length_errors++;
1643 if (rx_status & RXER)
1644 dev->stats.rx_frame_errors++;
1645 if (rx_status & CRC)
1646 dev->stats.rx_crc_errors++;
1647 } else {
1648 int need_to_reset = 0;
1649 int desno = 0;
1650
1651 if (rx_status & RXFSD) { /* this pkt is too long, over one rx buffer */
1652 struct fealnx_desc *cur;
1653
1654 /* check this packet is received completely? */
1655 cur = np->cur_rx;
1656 while (desno <= np->really_rx_count) {
1657 ++desno;
1658 if ((!(cur->status & RXOWN)) &&
1659 (cur->status & RXLSD))
1660 break;
1661 /* goto next rx descriptor */
1662 cur = cur->next_desc_logical;
1663 }
1664 if (desno > np->really_rx_count)
1665 need_to_reset = 1;
1666 } else /* RXLSD did not find, something error */
1667 need_to_reset = 1;
1668
1669 if (need_to_reset == 0) {
1670 int i;
1671
1672 dev->stats.rx_length_errors++;
1673
1674 /* free all rx descriptors related this long pkt */
1675 for (i = 0; i < desno; ++i) {
1676 if (!np->cur_rx->skbuff) {
1677 printk(KERN_DEBUG
1678 "%s: I'm scared\n", dev->name);
1679 break;
1680 }
1681 np->cur_rx->status = RXOWN;
1682 np->cur_rx = np->cur_rx->next_desc_logical;
1683 }
1684 continue;
1685 } else { /* rx error, need to reset this chip */
1686 stop_nic_rx(ioaddr, np->crvalue);
1687 reset_rx_descriptors(dev);
1688 iowrite32(np->crvalue, ioaddr + TCRRCR);
1689 }
1690 break; /* exit the while loop */
1691 }
1692 } else { /* this received pkt is ok */
1693
1694 struct sk_buff *skb;
1695 /* Omit the four octet CRC from the length. */
1696 short pkt_len = ((rx_status & FLNGMASK) >> FLNGShift) - 4;
1697
1698#ifndef final_version
1699 if (debug)
1700 printk(KERN_DEBUG " netdev_rx() normal Rx pkt length %d"
1701 " status %x.\n", pkt_len, rx_status);
1702#endif
1703
1704 /* Check if the packet is long enough to accept without copying
1705 to a minimally-sized skbuff. */
1706 if (pkt_len < rx_copybreak &&
1707 (skb = dev_alloc_skb(pkt_len + 2)) != NULL) {
1708 skb_reserve(skb, 2); /* 16 byte align the IP header */
1709 pci_dma_sync_single_for_cpu(np->pci_dev,
1710 np->cur_rx->buffer,
1711 np->rx_buf_sz,
1712 PCI_DMA_FROMDEVICE);
1713 /* Call copy + cksum if available. */
1714
1715#if ! defined(__alpha__)
1716 skb_copy_to_linear_data(skb,
1717 np->cur_rx->skbuff->data, pkt_len);
1718 skb_put(skb, pkt_len);
1719#else
1720 memcpy(skb_put(skb, pkt_len),
1721 np->cur_rx->skbuff->data, pkt_len);
1722#endif
1723 pci_dma_sync_single_for_device(np->pci_dev,
1724 np->cur_rx->buffer,
1725 np->rx_buf_sz,
1726 PCI_DMA_FROMDEVICE);
1727 } else {
1728 pci_unmap_single(np->pci_dev,
1729 np->cur_rx->buffer,
1730 np->rx_buf_sz,
1731 PCI_DMA_FROMDEVICE);
1732 skb_put(skb = np->cur_rx->skbuff, pkt_len);
1733 np->cur_rx->skbuff = NULL;
1734 --np->really_rx_count;
1735 }
1736 skb->protocol = eth_type_trans(skb, dev);
1737 netif_rx(skb);
1738 dev->stats.rx_packets++;
1739 dev->stats.rx_bytes += pkt_len;
1740 }
1741
1742 np->cur_rx = np->cur_rx->next_desc_logical;
1743 } /* end of while loop */
1744
1745 /* allocate skb for rx buffers */
1746 allocate_rx_buffers(dev);
1747
1748 return 0;
1749}
1750
1751
1752static struct net_device_stats *get_stats(struct net_device *dev)
1753{
1754 struct netdev_private *np = netdev_priv(dev);
1755 void __iomem *ioaddr = np->mem;
1756
1757 /* The chip only need report frame silently dropped. */
1758 if (netif_running(dev)) {
1759 dev->stats.rx_missed_errors +=
1760 ioread32(ioaddr + TALLY) & 0x7fff;
1761 dev->stats.rx_crc_errors +=
1762 (ioread32(ioaddr + TALLY) & 0x7fff0000) >> 16;
1763 }
1764
1765 return &dev->stats;
1766}
1767
1768
1769/* for dev->set_multicast_list */
1770static void set_rx_mode(struct net_device *dev)
1771{
1772 spinlock_t *lp = &((struct netdev_private *)netdev_priv(dev))->lock;
1773 unsigned long flags;
1774 spin_lock_irqsave(lp, flags);
1775 __set_rx_mode(dev);
1776 spin_unlock_irqrestore(lp, flags);
1777}
1778
1779
1780/* Take lock before calling */
1781static void __set_rx_mode(struct net_device *dev)
1782{
1783 struct netdev_private *np = netdev_priv(dev);
1784 void __iomem *ioaddr = np->mem;
1785 u32 mc_filter[2]; /* Multicast hash filter */
1786 u32 rx_mode;
1787
1788 if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
1789 memset(mc_filter, 0xff, sizeof(mc_filter));
1790 rx_mode = CR_W_PROM | CR_W_AB | CR_W_AM;
1791 } else if ((netdev_mc_count(dev) > multicast_filter_limit) ||
1792 (dev->flags & IFF_ALLMULTI)) {
1793 /* Too many to match, or accept all multicasts. */
1794 memset(mc_filter, 0xff, sizeof(mc_filter));
1795 rx_mode = CR_W_AB | CR_W_AM;
1796 } else {
1797 struct netdev_hw_addr *ha;
1798
1799 memset(mc_filter, 0, sizeof(mc_filter));
1800 netdev_for_each_mc_addr(ha, dev) {
1801 unsigned int bit;
1802 bit = (ether_crc(ETH_ALEN, ha->addr) >> 26) ^ 0x3F;
1803 mc_filter[bit >> 5] |= (1 << bit);
1804 }
1805 rx_mode = CR_W_AB | CR_W_AM;
1806 }
1807
1808 stop_nic_rxtx(ioaddr, np->crvalue);
1809
1810 iowrite32(mc_filter[0], ioaddr + MAR0);
1811 iowrite32(mc_filter[1], ioaddr + MAR1);
1812 np->crvalue &= ~CR_W_RXMODEMASK;
1813 np->crvalue |= rx_mode;
1814 iowrite32(np->crvalue, ioaddr + TCRRCR);
1815}
1816
1817static void netdev_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1818{
1819 struct netdev_private *np = netdev_priv(dev);
1820
1821 strcpy(info->driver, DRV_NAME);
1822 strcpy(info->version, DRV_VERSION);
1823 strcpy(info->bus_info, pci_name(np->pci_dev));
1824}
1825
1826static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1827{
1828 struct netdev_private *np = netdev_priv(dev);
1829 int rc;
1830
1831 spin_lock_irq(&np->lock);
1832 rc = mii_ethtool_gset(&np->mii, cmd);
1833 spin_unlock_irq(&np->lock);
1834
1835 return rc;
1836}
1837
1838static int netdev_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1839{
1840 struct netdev_private *np = netdev_priv(dev);
1841 int rc;
1842
1843 spin_lock_irq(&np->lock);
1844 rc = mii_ethtool_sset(&np->mii, cmd);
1845 spin_unlock_irq(&np->lock);
1846
1847 return rc;
1848}
1849
1850static int netdev_nway_reset(struct net_device *dev)
1851{
1852 struct netdev_private *np = netdev_priv(dev);
1853 return mii_nway_restart(&np->mii);
1854}
1855
1856static u32 netdev_get_link(struct net_device *dev)
1857{
1858 struct netdev_private *np = netdev_priv(dev);
1859 return mii_link_ok(&np->mii);
1860}
1861
1862static u32 netdev_get_msglevel(struct net_device *dev)
1863{
1864 return debug;
1865}
1866
1867static void netdev_set_msglevel(struct net_device *dev, u32 value)
1868{
1869 debug = value;
1870}
1871
1872static const struct ethtool_ops netdev_ethtool_ops = {
1873 .get_drvinfo = netdev_get_drvinfo,
1874 .get_settings = netdev_get_settings,
1875 .set_settings = netdev_set_settings,
1876 .nway_reset = netdev_nway_reset,
1877 .get_link = netdev_get_link,
1878 .get_msglevel = netdev_get_msglevel,
1879 .set_msglevel = netdev_set_msglevel,
1880};
1881
1882static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1883{
1884 struct netdev_private *np = netdev_priv(dev);
1885 int rc;
1886
1887 if (!netif_running(dev))
1888 return -EINVAL;
1889
1890 spin_lock_irq(&np->lock);
1891 rc = generic_mii_ioctl(&np->mii, if_mii(rq), cmd, NULL);
1892 spin_unlock_irq(&np->lock);
1893
1894 return rc;
1895}
1896
1897
1898static int netdev_close(struct net_device *dev)
1899{
1900 struct netdev_private *np = netdev_priv(dev);
1901 void __iomem *ioaddr = np->mem;
1902 int i;
1903
1904 netif_stop_queue(dev);
1905
1906 /* Disable interrupts by clearing the interrupt mask. */
1907 iowrite32(0x0000, ioaddr + IMR);
1908
1909 /* Stop the chip's Tx and Rx processes. */
1910 stop_nic_rxtx(ioaddr, 0);
1911
1912 del_timer_sync(&np->timer);
1913 del_timer_sync(&np->reset_timer);
1914
1915 free_irq(dev->irq, dev);
1916
1917 /* Free all the skbuffs in the Rx queue. */
1918 for (i = 0; i < RX_RING_SIZE; i++) {
1919 struct sk_buff *skb = np->rx_ring[i].skbuff;
1920
1921 np->rx_ring[i].status = 0;
1922 if (skb) {
1923 pci_unmap_single(np->pci_dev, np->rx_ring[i].buffer,
1924 np->rx_buf_sz, PCI_DMA_FROMDEVICE);
1925 dev_kfree_skb(skb);
1926 np->rx_ring[i].skbuff = NULL;
1927 }
1928 }
1929
1930 for (i = 0; i < TX_RING_SIZE; i++) {
1931 struct sk_buff *skb = np->tx_ring[i].skbuff;
1932
1933 if (skb) {
1934 pci_unmap_single(np->pci_dev, np->tx_ring[i].buffer,
1935 skb->len, PCI_DMA_TODEVICE);
1936 dev_kfree_skb(skb);
1937 np->tx_ring[i].skbuff = NULL;
1938 }
1939 }
1940
1941 return 0;
1942}
1943
1944static DEFINE_PCI_DEVICE_TABLE(fealnx_pci_tbl) = {
1945 {0x1516, 0x0800, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1946 {0x1516, 0x0803, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1},
1947 {0x1516, 0x0891, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2},
1948 {} /* terminate list */
1949};
1950MODULE_DEVICE_TABLE(pci, fealnx_pci_tbl);
1951
1952
1953static struct pci_driver fealnx_driver = {
1954 .name = "fealnx",
1955 .id_table = fealnx_pci_tbl,
1956 .probe = fealnx_init_one,
1957 .remove = __devexit_p(fealnx_remove_one),
1958};
1959
1960static int __init fealnx_init(void)
1961{
1962/* when a module, this is printed whether or not devices are found in probe */
1963#ifdef MODULE
1964 printk(version);
1965#endif
1966
1967 return pci_register_driver(&fealnx_driver);
1968}
1969
1970static void __exit fealnx_exit(void)
1971{
1972 pci_unregister_driver(&fealnx_driver);
1973}
1974
1975module_init(fealnx_init);
1976module_exit(fealnx_exit);