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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_rx_mode = 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 /* Make certain the descriptor lists are aligned. */
549 np = netdev_priv(dev);
550 np->mem = ioaddr;
551 spin_lock_init(&np->lock);
552 np->pci_dev = pdev;
553 np->flags = skel_netdrv_tbl[chip_id].flags;
554 pci_set_drvdata(pdev, dev);
555 np->mii.dev = dev;
556 np->mii.mdio_read = mdio_read;
557 np->mii.mdio_write = mdio_write;
558 np->mii.phy_id_mask = 0x1f;
559 np->mii.reg_num_mask = 0x1f;
560
561 ring_space = pci_alloc_consistent(pdev, RX_TOTAL_SIZE, &ring_dma);
562 if (!ring_space) {
563 err = -ENOMEM;
564 goto err_out_free_dev;
565 }
566 np->rx_ring = ring_space;
567 np->rx_ring_dma = ring_dma;
568
569 ring_space = pci_alloc_consistent(pdev, TX_TOTAL_SIZE, &ring_dma);
570 if (!ring_space) {
571 err = -ENOMEM;
572 goto err_out_free_rx;
573 }
574 np->tx_ring = ring_space;
575 np->tx_ring_dma = ring_dma;
576
577 /* find the connected MII xcvrs */
578 if (np->flags == HAS_MII_XCVR) {
579 int phy, phy_idx = 0;
580
581 for (phy = 1; phy < 32 && phy_idx < ARRAY_SIZE(np->phys);
582 phy++) {
583 int mii_status = mdio_read(dev, phy, 1);
584
585 if (mii_status != 0xffff && mii_status != 0x0000) {
586 np->phys[phy_idx++] = phy;
587 dev_info(&pdev->dev,
588 "MII PHY found at address %d, status "
589 "0x%4.4x.\n", phy, mii_status);
590 /* get phy type */
591 {
592 unsigned int data;
593
594 data = mdio_read(dev, np->phys[0], 2);
595 if (data == SeeqPHYID0)
596 np->PHYType = SeeqPHY;
597 else if (data == AhdocPHYID0)
598 np->PHYType = AhdocPHY;
599 else if (data == MarvellPHYID0)
600 np->PHYType = MarvellPHY;
601 else if (data == MysonPHYID0)
602 np->PHYType = Myson981;
603 else if (data == LevelOnePHYID0)
604 np->PHYType = LevelOnePHY;
605 else
606 np->PHYType = OtherPHY;
607 }
608 }
609 }
610
611 np->mii_cnt = phy_idx;
612 if (phy_idx == 0)
613 dev_warn(&pdev->dev,
614 "MII PHY not found -- this device may "
615 "not operate correctly.\n");
616 } else {
617 np->phys[0] = 32;
618/* 89/6/23 add, (begin) */
619 /* get phy type */
620 if (ioread32(ioaddr + PHYIDENTIFIER) == MysonPHYID)
621 np->PHYType = MysonPHY;
622 else
623 np->PHYType = OtherPHY;
624 }
625 np->mii.phy_id = np->phys[0];
626
627 if (dev->mem_start)
628 option = dev->mem_start;
629
630 /* The lower four bits are the media type. */
631 if (option > 0) {
632 if (option & 0x200)
633 np->mii.full_duplex = 1;
634 np->default_port = option & 15;
635 }
636
637 if (card_idx < MAX_UNITS && full_duplex[card_idx] > 0)
638 np->mii.full_duplex = full_duplex[card_idx];
639
640 if (np->mii.full_duplex) {
641 dev_info(&pdev->dev, "Media type forced to Full Duplex.\n");
642/* 89/6/13 add, (begin) */
643// if (np->PHYType==MarvellPHY)
644 if ((np->PHYType == MarvellPHY) || (np->PHYType == LevelOnePHY)) {
645 unsigned int data;
646
647 data = mdio_read(dev, np->phys[0], 9);
648 data = (data & 0xfcff) | 0x0200;
649 mdio_write(dev, np->phys[0], 9, data);
650 }
651/* 89/6/13 add, (end) */
652 if (np->flags == HAS_MII_XCVR)
653 mdio_write(dev, np->phys[0], MII_ADVERTISE, ADVERTISE_FULL);
654 else
655 iowrite32(ADVERTISE_FULL, ioaddr + ANARANLPAR);
656 np->mii.force_media = 1;
657 }
658
659 dev->netdev_ops = &netdev_ops;
660 dev->ethtool_ops = &netdev_ethtool_ops;
661 dev->watchdog_timeo = TX_TIMEOUT;
662
663 err = register_netdev(dev);
664 if (err)
665 goto err_out_free_tx;
666
667 printk(KERN_INFO "%s: %s at %p, %pM, IRQ %d.\n",
668 dev->name, skel_netdrv_tbl[chip_id].chip_name, ioaddr,
669 dev->dev_addr, irq);
670
671 return 0;
672
673err_out_free_tx:
674 pci_free_consistent(pdev, TX_TOTAL_SIZE, np->tx_ring, np->tx_ring_dma);
675err_out_free_rx:
676 pci_free_consistent(pdev, RX_TOTAL_SIZE, np->rx_ring, np->rx_ring_dma);
677err_out_free_dev:
678 free_netdev(dev);
679err_out_unmap:
680 pci_iounmap(pdev, ioaddr);
681err_out_res:
682 pci_release_regions(pdev);
683 return err;
684}
685
686
687static void __devexit fealnx_remove_one(struct pci_dev *pdev)
688{
689 struct net_device *dev = pci_get_drvdata(pdev);
690
691 if (dev) {
692 struct netdev_private *np = netdev_priv(dev);
693
694 pci_free_consistent(pdev, TX_TOTAL_SIZE, np->tx_ring,
695 np->tx_ring_dma);
696 pci_free_consistent(pdev, RX_TOTAL_SIZE, np->rx_ring,
697 np->rx_ring_dma);
698 unregister_netdev(dev);
699 pci_iounmap(pdev, np->mem);
700 free_netdev(dev);
701 pci_release_regions(pdev);
702 pci_set_drvdata(pdev, NULL);
703 } else
704 printk(KERN_ERR "fealnx: remove for unknown device\n");
705}
706
707
708static ulong m80x_send_cmd_to_phy(void __iomem *miiport, int opcode, int phyad, int regad)
709{
710 ulong miir;
711 int i;
712 unsigned int mask, data;
713
714 /* enable MII output */
715 miir = (ulong) ioread32(miiport);
716 miir &= 0xfffffff0;
717
718 miir |= MASK_MIIR_MII_WRITE + MASK_MIIR_MII_MDO;
719
720 /* send 32 1's preamble */
721 for (i = 0; i < 32; i++) {
722 /* low MDC; MDO is already high (miir) */
723 miir &= ~MASK_MIIR_MII_MDC;
724 iowrite32(miir, miiport);
725
726 /* high MDC */
727 miir |= MASK_MIIR_MII_MDC;
728 iowrite32(miir, miiport);
729 }
730
731 /* calculate ST+OP+PHYAD+REGAD+TA */
732 data = opcode | (phyad << 7) | (regad << 2);
733
734 /* sent out */
735 mask = 0x8000;
736 while (mask) {
737 /* low MDC, prepare MDO */
738 miir &= ~(MASK_MIIR_MII_MDC + MASK_MIIR_MII_MDO);
739 if (mask & data)
740 miir |= MASK_MIIR_MII_MDO;
741
742 iowrite32(miir, miiport);
743 /* high MDC */
744 miir |= MASK_MIIR_MII_MDC;
745 iowrite32(miir, miiport);
746 udelay(30);
747
748 /* next */
749 mask >>= 1;
750 if (mask == 0x2 && opcode == OP_READ)
751 miir &= ~MASK_MIIR_MII_WRITE;
752 }
753 return miir;
754}
755
756
757static int mdio_read(struct net_device *dev, int phyad, int regad)
758{
759 struct netdev_private *np = netdev_priv(dev);
760 void __iomem *miiport = np->mem + MANAGEMENT;
761 ulong miir;
762 unsigned int mask, data;
763
764 miir = m80x_send_cmd_to_phy(miiport, OP_READ, phyad, regad);
765
766 /* read data */
767 mask = 0x8000;
768 data = 0;
769 while (mask) {
770 /* low MDC */
771 miir &= ~MASK_MIIR_MII_MDC;
772 iowrite32(miir, miiport);
773
774 /* read MDI */
775 miir = ioread32(miiport);
776 if (miir & MASK_MIIR_MII_MDI)
777 data |= mask;
778
779 /* high MDC, and wait */
780 miir |= MASK_MIIR_MII_MDC;
781 iowrite32(miir, miiport);
782 udelay(30);
783
784 /* next */
785 mask >>= 1;
786 }
787
788 /* low MDC */
789 miir &= ~MASK_MIIR_MII_MDC;
790 iowrite32(miir, miiport);
791
792 return data & 0xffff;
793}
794
795
796static void mdio_write(struct net_device *dev, int phyad, int regad, int data)
797{
798 struct netdev_private *np = netdev_priv(dev);
799 void __iomem *miiport = np->mem + MANAGEMENT;
800 ulong miir;
801 unsigned int mask;
802
803 miir = m80x_send_cmd_to_phy(miiport, OP_WRITE, phyad, regad);
804
805 /* write data */
806 mask = 0x8000;
807 while (mask) {
808 /* low MDC, prepare MDO */
809 miir &= ~(MASK_MIIR_MII_MDC + MASK_MIIR_MII_MDO);
810 if (mask & data)
811 miir |= MASK_MIIR_MII_MDO;
812 iowrite32(miir, miiport);
813
814 /* high MDC */
815 miir |= MASK_MIIR_MII_MDC;
816 iowrite32(miir, miiport);
817
818 /* next */
819 mask >>= 1;
820 }
821
822 /* low MDC */
823 miir &= ~MASK_MIIR_MII_MDC;
824 iowrite32(miir, miiport);
825}
826
827
828static int netdev_open(struct net_device *dev)
829{
830 struct netdev_private *np = netdev_priv(dev);
831 void __iomem *ioaddr = np->mem;
832 const int irq = np->pci_dev->irq;
833 int rc, i;
834
835 iowrite32(0x00000001, ioaddr + BCR); /* Reset */
836
837 rc = request_irq(irq, intr_handler, IRQF_SHARED, dev->name, dev);
838 if (rc)
839 return -EAGAIN;
840
841 for (i = 0; i < 3; i++)
842 iowrite16(((unsigned short*)dev->dev_addr)[i],
843 ioaddr + PAR0 + i*2);
844
845 init_ring(dev);
846
847 iowrite32(np->rx_ring_dma, ioaddr + RXLBA);
848 iowrite32(np->tx_ring_dma, ioaddr + TXLBA);
849
850 /* Initialize other registers. */
851 /* Configure the PCI bus bursts and FIFO thresholds.
852 486: Set 8 longword burst.
853 586: no burst limit.
854 Burst length 5:3
855 0 0 0 1
856 0 0 1 4
857 0 1 0 8
858 0 1 1 16
859 1 0 0 32
860 1 0 1 64
861 1 1 0 128
862 1 1 1 256
863 Wait the specified 50 PCI cycles after a reset by initializing
864 Tx and Rx queues and the address filter list.
865 FIXME (Ueimor): optimistic for alpha + posted writes ? */
866
867 np->bcrvalue = 0x10; /* little-endian, 8 burst length */
868#ifdef __BIG_ENDIAN
869 np->bcrvalue |= 0x04; /* big-endian */
870#endif
871
872#if defined(__i386__) && !defined(MODULE)
873 if (boot_cpu_data.x86 <= 4)
874 np->crvalue = 0xa00;
875 else
876#endif
877 np->crvalue = 0xe00; /* rx 128 burst length */
878
879
880// 89/12/29 add,
881// 90/1/16 modify,
882// np->imrvalue=FBE|TUNF|CNTOVF|RBU|TI|RI;
883 np->imrvalue = TUNF | CNTOVF | RBU | TI | RI;
884 if (np->pci_dev->device == 0x891) {
885 np->bcrvalue |= 0x200; /* set PROG bit */
886 np->crvalue |= CR_W_ENH; /* set enhanced bit */
887 np->imrvalue |= ETI;
888 }
889 iowrite32(np->bcrvalue, ioaddr + BCR);
890
891 if (dev->if_port == 0)
892 dev->if_port = np->default_port;
893
894 iowrite32(0, ioaddr + RXPDR);
895// 89/9/1 modify,
896// np->crvalue = 0x00e40001; /* tx store and forward, tx/rx enable */
897 np->crvalue |= 0x00e40001; /* tx store and forward, tx/rx enable */
898 np->mii.full_duplex = np->mii.force_media;
899 getlinkstatus(dev);
900 if (np->linkok)
901 getlinktype(dev);
902 __set_rx_mode(dev);
903
904 netif_start_queue(dev);
905
906 /* Clear and Enable interrupts by setting the interrupt mask. */
907 iowrite32(FBE | TUNF | CNTOVF | RBU | TI | RI, ioaddr + ISR);
908 iowrite32(np->imrvalue, ioaddr + IMR);
909
910 if (debug)
911 printk(KERN_DEBUG "%s: Done netdev_open().\n", dev->name);
912
913 /* Set the timer to check for link beat. */
914 init_timer(&np->timer);
915 np->timer.expires = RUN_AT(3 * HZ);
916 np->timer.data = (unsigned long) dev;
917 np->timer.function = netdev_timer;
918
919 /* timer handler */
920 add_timer(&np->timer);
921
922 init_timer(&np->reset_timer);
923 np->reset_timer.data = (unsigned long) dev;
924 np->reset_timer.function = reset_timer;
925 np->reset_timer_armed = 0;
926 return rc;
927}
928
929
930static void getlinkstatus(struct net_device *dev)
931/* function: Routine will read MII Status Register to get link status. */
932/* input : dev... pointer to the adapter block. */
933/* output : none. */
934{
935 struct netdev_private *np = netdev_priv(dev);
936 unsigned int i, DelayTime = 0x1000;
937
938 np->linkok = 0;
939
940 if (np->PHYType == MysonPHY) {
941 for (i = 0; i < DelayTime; ++i) {
942 if (ioread32(np->mem + BMCRSR) & LinkIsUp2) {
943 np->linkok = 1;
944 return;
945 }
946 udelay(100);
947 }
948 } else {
949 for (i = 0; i < DelayTime; ++i) {
950 if (mdio_read(dev, np->phys[0], MII_BMSR) & BMSR_LSTATUS) {
951 np->linkok = 1;
952 return;
953 }
954 udelay(100);
955 }
956 }
957}
958
959
960static void getlinktype(struct net_device *dev)
961{
962 struct netdev_private *np = netdev_priv(dev);
963
964 if (np->PHYType == MysonPHY) { /* 3-in-1 case */
965 if (ioread32(np->mem + TCRRCR) & CR_R_FD)
966 np->duplexmode = 2; /* full duplex */
967 else
968 np->duplexmode = 1; /* half duplex */
969 if (ioread32(np->mem + TCRRCR) & CR_R_PS10)
970 np->line_speed = 1; /* 10M */
971 else
972 np->line_speed = 2; /* 100M */
973 } else {
974 if (np->PHYType == SeeqPHY) { /* this PHY is SEEQ 80225 */
975 unsigned int data;
976
977 data = mdio_read(dev, np->phys[0], MIIRegister18);
978 if (data & SPD_DET_100)
979 np->line_speed = 2; /* 100M */
980 else
981 np->line_speed = 1; /* 10M */
982 if (data & DPLX_DET_FULL)
983 np->duplexmode = 2; /* full duplex mode */
984 else
985 np->duplexmode = 1; /* half duplex mode */
986 } else if (np->PHYType == AhdocPHY) {
987 unsigned int data;
988
989 data = mdio_read(dev, np->phys[0], DiagnosticReg);
990 if (data & Speed_100)
991 np->line_speed = 2; /* 100M */
992 else
993 np->line_speed = 1; /* 10M */
994 if (data & DPLX_FULL)
995 np->duplexmode = 2; /* full duplex mode */
996 else
997 np->duplexmode = 1; /* half duplex mode */
998 }
999/* 89/6/13 add, (begin) */
1000 else if (np->PHYType == MarvellPHY) {
1001 unsigned int data;
1002
1003 data = mdio_read(dev, np->phys[0], SpecificReg);
1004 if (data & Full_Duplex)
1005 np->duplexmode = 2; /* full duplex mode */
1006 else
1007 np->duplexmode = 1; /* half duplex mode */
1008 data &= SpeedMask;
1009 if (data == Speed_1000M)
1010 np->line_speed = 3; /* 1000M */
1011 else if (data == Speed_100M)
1012 np->line_speed = 2; /* 100M */
1013 else
1014 np->line_speed = 1; /* 10M */
1015 }
1016/* 89/6/13 add, (end) */
1017/* 89/7/27 add, (begin) */
1018 else if (np->PHYType == Myson981) {
1019 unsigned int data;
1020
1021 data = mdio_read(dev, np->phys[0], StatusRegister);
1022
1023 if (data & SPEED100)
1024 np->line_speed = 2;
1025 else
1026 np->line_speed = 1;
1027
1028 if (data & FULLMODE)
1029 np->duplexmode = 2;
1030 else
1031 np->duplexmode = 1;
1032 }
1033/* 89/7/27 add, (end) */
1034/* 89/12/29 add */
1035 else if (np->PHYType == LevelOnePHY) {
1036 unsigned int data;
1037
1038 data = mdio_read(dev, np->phys[0], SpecificReg);
1039 if (data & LXT1000_Full)
1040 np->duplexmode = 2; /* full duplex mode */
1041 else
1042 np->duplexmode = 1; /* half duplex mode */
1043 data &= SpeedMask;
1044 if (data == LXT1000_1000M)
1045 np->line_speed = 3; /* 1000M */
1046 else if (data == LXT1000_100M)
1047 np->line_speed = 2; /* 100M */
1048 else
1049 np->line_speed = 1; /* 10M */
1050 }
1051 np->crvalue &= (~CR_W_PS10) & (~CR_W_FD) & (~CR_W_PS1000);
1052 if (np->line_speed == 1)
1053 np->crvalue |= CR_W_PS10;
1054 else if (np->line_speed == 3)
1055 np->crvalue |= CR_W_PS1000;
1056 if (np->duplexmode == 2)
1057 np->crvalue |= CR_W_FD;
1058 }
1059}
1060
1061
1062/* Take lock before calling this */
1063static void allocate_rx_buffers(struct net_device *dev)
1064{
1065 struct netdev_private *np = netdev_priv(dev);
1066
1067 /* allocate skb for rx buffers */
1068 while (np->really_rx_count != RX_RING_SIZE) {
1069 struct sk_buff *skb;
1070
1071 skb = netdev_alloc_skb(dev, np->rx_buf_sz);
1072 if (skb == NULL)
1073 break; /* Better luck next round. */
1074
1075 while (np->lack_rxbuf->skbuff)
1076 np->lack_rxbuf = np->lack_rxbuf->next_desc_logical;
1077
1078 np->lack_rxbuf->skbuff = skb;
1079 np->lack_rxbuf->buffer = pci_map_single(np->pci_dev, skb->data,
1080 np->rx_buf_sz, PCI_DMA_FROMDEVICE);
1081 np->lack_rxbuf->status = RXOWN;
1082 ++np->really_rx_count;
1083 }
1084}
1085
1086
1087static void netdev_timer(unsigned long data)
1088{
1089 struct net_device *dev = (struct net_device *) data;
1090 struct netdev_private *np = netdev_priv(dev);
1091 void __iomem *ioaddr = np->mem;
1092 int old_crvalue = np->crvalue;
1093 unsigned int old_linkok = np->linkok;
1094 unsigned long flags;
1095
1096 if (debug)
1097 printk(KERN_DEBUG "%s: Media selection timer tick, status %8.8x "
1098 "config %8.8x.\n", dev->name, ioread32(ioaddr + ISR),
1099 ioread32(ioaddr + TCRRCR));
1100
1101 spin_lock_irqsave(&np->lock, flags);
1102
1103 if (np->flags == HAS_MII_XCVR) {
1104 getlinkstatus(dev);
1105 if ((old_linkok == 0) && (np->linkok == 1)) { /* we need to detect the media type again */
1106 getlinktype(dev);
1107 if (np->crvalue != old_crvalue) {
1108 stop_nic_rxtx(ioaddr, np->crvalue);
1109 iowrite32(np->crvalue, ioaddr + TCRRCR);
1110 }
1111 }
1112 }
1113
1114 allocate_rx_buffers(dev);
1115
1116 spin_unlock_irqrestore(&np->lock, flags);
1117
1118 np->timer.expires = RUN_AT(10 * HZ);
1119 add_timer(&np->timer);
1120}
1121
1122
1123/* Take lock before calling */
1124/* Reset chip and disable rx, tx and interrupts */
1125static void reset_and_disable_rxtx(struct net_device *dev)
1126{
1127 struct netdev_private *np = netdev_priv(dev);
1128 void __iomem *ioaddr = np->mem;
1129 int delay=51;
1130
1131 /* Reset the chip's Tx and Rx processes. */
1132 stop_nic_rxtx(ioaddr, 0);
1133
1134 /* Disable interrupts by clearing the interrupt mask. */
1135 iowrite32(0, ioaddr + IMR);
1136
1137 /* Reset the chip to erase previous misconfiguration. */
1138 iowrite32(0x00000001, ioaddr + BCR);
1139
1140 /* Ueimor: wait for 50 PCI cycles (and flush posted writes btw).
1141 We surely wait too long (address+data phase). Who cares? */
1142 while (--delay) {
1143 ioread32(ioaddr + BCR);
1144 rmb();
1145 }
1146}
1147
1148
1149/* Take lock before calling */
1150/* Restore chip after reset */
1151static void enable_rxtx(struct net_device *dev)
1152{
1153 struct netdev_private *np = netdev_priv(dev);
1154 void __iomem *ioaddr = np->mem;
1155
1156 reset_rx_descriptors(dev);
1157
1158 iowrite32(np->tx_ring_dma + ((char*)np->cur_tx - (char*)np->tx_ring),
1159 ioaddr + TXLBA);
1160 iowrite32(np->rx_ring_dma + ((char*)np->cur_rx - (char*)np->rx_ring),
1161 ioaddr + RXLBA);
1162
1163 iowrite32(np->bcrvalue, ioaddr + BCR);
1164
1165 iowrite32(0, ioaddr + RXPDR);
1166 __set_rx_mode(dev); /* changes np->crvalue, writes it into TCRRCR */
1167
1168 /* Clear and Enable interrupts by setting the interrupt mask. */
1169 iowrite32(FBE | TUNF | CNTOVF | RBU | TI | RI, ioaddr + ISR);
1170 iowrite32(np->imrvalue, ioaddr + IMR);
1171
1172 iowrite32(0, ioaddr + TXPDR);
1173}
1174
1175
1176static void reset_timer(unsigned long data)
1177{
1178 struct net_device *dev = (struct net_device *) data;
1179 struct netdev_private *np = netdev_priv(dev);
1180 unsigned long flags;
1181
1182 printk(KERN_WARNING "%s: resetting tx and rx machinery\n", dev->name);
1183
1184 spin_lock_irqsave(&np->lock, flags);
1185 np->crvalue = np->crvalue_sv;
1186 np->imrvalue = np->imrvalue_sv;
1187
1188 reset_and_disable_rxtx(dev);
1189 /* works for me without this:
1190 reset_tx_descriptors(dev); */
1191 enable_rxtx(dev);
1192 netif_start_queue(dev); /* FIXME: or netif_wake_queue(dev); ? */
1193
1194 np->reset_timer_armed = 0;
1195
1196 spin_unlock_irqrestore(&np->lock, flags);
1197}
1198
1199
1200static void fealnx_tx_timeout(struct net_device *dev)
1201{
1202 struct netdev_private *np = netdev_priv(dev);
1203 void __iomem *ioaddr = np->mem;
1204 unsigned long flags;
1205 int i;
1206
1207 printk(KERN_WARNING
1208 "%s: Transmit timed out, status %8.8x, resetting...\n",
1209 dev->name, ioread32(ioaddr + ISR));
1210
1211 {
1212 printk(KERN_DEBUG " Rx ring %p: ", np->rx_ring);
1213 for (i = 0; i < RX_RING_SIZE; i++)
1214 printk(KERN_CONT " %8.8x",
1215 (unsigned int) np->rx_ring[i].status);
1216 printk(KERN_CONT "\n");
1217 printk(KERN_DEBUG " Tx ring %p: ", np->tx_ring);
1218 for (i = 0; i < TX_RING_SIZE; i++)
1219 printk(KERN_CONT " %4.4x", np->tx_ring[i].status);
1220 printk(KERN_CONT "\n");
1221 }
1222
1223 spin_lock_irqsave(&np->lock, flags);
1224
1225 reset_and_disable_rxtx(dev);
1226 reset_tx_descriptors(dev);
1227 enable_rxtx(dev);
1228
1229 spin_unlock_irqrestore(&np->lock, flags);
1230
1231 dev->trans_start = jiffies; /* prevent tx timeout */
1232 dev->stats.tx_errors++;
1233 netif_wake_queue(dev); /* or .._start_.. ?? */
1234}
1235
1236
1237/* Initialize the Rx and Tx rings, along with various 'dev' bits. */
1238static void init_ring(struct net_device *dev)
1239{
1240 struct netdev_private *np = netdev_priv(dev);
1241 int i;
1242
1243 /* initialize rx variables */
1244 np->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32);
1245 np->cur_rx = &np->rx_ring[0];
1246 np->lack_rxbuf = np->rx_ring;
1247 np->really_rx_count = 0;
1248
1249 /* initial rx descriptors. */
1250 for (i = 0; i < RX_RING_SIZE; i++) {
1251 np->rx_ring[i].status = 0;
1252 np->rx_ring[i].control = np->rx_buf_sz << RBSShift;
1253 np->rx_ring[i].next_desc = np->rx_ring_dma +
1254 (i + 1)*sizeof(struct fealnx_desc);
1255 np->rx_ring[i].next_desc_logical = &np->rx_ring[i + 1];
1256 np->rx_ring[i].skbuff = NULL;
1257 }
1258
1259 /* for the last rx descriptor */
1260 np->rx_ring[i - 1].next_desc = np->rx_ring_dma;
1261 np->rx_ring[i - 1].next_desc_logical = np->rx_ring;
1262
1263 /* allocate skb for rx buffers */
1264 for (i = 0; i < RX_RING_SIZE; i++) {
1265 struct sk_buff *skb = netdev_alloc_skb(dev, np->rx_buf_sz);
1266
1267 if (skb == NULL) {
1268 np->lack_rxbuf = &np->rx_ring[i];
1269 break;
1270 }
1271
1272 ++np->really_rx_count;
1273 np->rx_ring[i].skbuff = skb;
1274 np->rx_ring[i].buffer = pci_map_single(np->pci_dev, skb->data,
1275 np->rx_buf_sz, PCI_DMA_FROMDEVICE);
1276 np->rx_ring[i].status = RXOWN;
1277 np->rx_ring[i].control |= RXIC;
1278 }
1279
1280 /* initialize tx variables */
1281 np->cur_tx = &np->tx_ring[0];
1282 np->cur_tx_copy = &np->tx_ring[0];
1283 np->really_tx_count = 0;
1284 np->free_tx_count = TX_RING_SIZE;
1285
1286 for (i = 0; i < TX_RING_SIZE; i++) {
1287 np->tx_ring[i].status = 0;
1288 /* do we need np->tx_ring[i].control = XXX; ?? */
1289 np->tx_ring[i].next_desc = np->tx_ring_dma +
1290 (i + 1)*sizeof(struct fealnx_desc);
1291 np->tx_ring[i].next_desc_logical = &np->tx_ring[i + 1];
1292 np->tx_ring[i].skbuff = NULL;
1293 }
1294
1295 /* for the last tx descriptor */
1296 np->tx_ring[i - 1].next_desc = np->tx_ring_dma;
1297 np->tx_ring[i - 1].next_desc_logical = &np->tx_ring[0];
1298}
1299
1300
1301static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev)
1302{
1303 struct netdev_private *np = netdev_priv(dev);
1304 unsigned long flags;
1305
1306 spin_lock_irqsave(&np->lock, flags);
1307
1308 np->cur_tx_copy->skbuff = skb;
1309
1310#define one_buffer
1311#define BPT 1022
1312#if defined(one_buffer)
1313 np->cur_tx_copy->buffer = pci_map_single(np->pci_dev, skb->data,
1314 skb->len, PCI_DMA_TODEVICE);
1315 np->cur_tx_copy->control = TXIC | TXLD | TXFD | CRCEnable | PADEnable;
1316 np->cur_tx_copy->control |= (skb->len << PKTSShift); /* pkt size */
1317 np->cur_tx_copy->control |= (skb->len << TBSShift); /* buffer size */
1318// 89/12/29 add,
1319 if (np->pci_dev->device == 0x891)
1320 np->cur_tx_copy->control |= ETIControl | RetryTxLC;
1321 np->cur_tx_copy->status = TXOWN;
1322 np->cur_tx_copy = np->cur_tx_copy->next_desc_logical;
1323 --np->free_tx_count;
1324#elif defined(two_buffer)
1325 if (skb->len > BPT) {
1326 struct fealnx_desc *next;
1327
1328 /* for the first descriptor */
1329 np->cur_tx_copy->buffer = pci_map_single(np->pci_dev, skb->data,
1330 BPT, PCI_DMA_TODEVICE);
1331 np->cur_tx_copy->control = TXIC | TXFD | CRCEnable | PADEnable;
1332 np->cur_tx_copy->control |= (skb->len << PKTSShift); /* pkt size */
1333 np->cur_tx_copy->control |= (BPT << TBSShift); /* buffer size */
1334
1335 /* for the last descriptor */
1336 next = np->cur_tx_copy->next_desc_logical;
1337 next->skbuff = skb;
1338 next->control = TXIC | TXLD | CRCEnable | PADEnable;
1339 next->control |= (skb->len << PKTSShift); /* pkt size */
1340 next->control |= ((skb->len - BPT) << TBSShift); /* buf size */
1341// 89/12/29 add,
1342 if (np->pci_dev->device == 0x891)
1343 np->cur_tx_copy->control |= ETIControl | RetryTxLC;
1344 next->buffer = pci_map_single(ep->pci_dev, skb->data + BPT,
1345 skb->len - BPT, PCI_DMA_TODEVICE);
1346
1347 next->status = TXOWN;
1348 np->cur_tx_copy->status = TXOWN;
1349
1350 np->cur_tx_copy = next->next_desc_logical;
1351 np->free_tx_count -= 2;
1352 } else {
1353 np->cur_tx_copy->buffer = pci_map_single(np->pci_dev, skb->data,
1354 skb->len, PCI_DMA_TODEVICE);
1355 np->cur_tx_copy->control = TXIC | TXLD | TXFD | CRCEnable | PADEnable;
1356 np->cur_tx_copy->control |= (skb->len << PKTSShift); /* pkt size */
1357 np->cur_tx_copy->control |= (skb->len << TBSShift); /* buffer size */
1358// 89/12/29 add,
1359 if (np->pci_dev->device == 0x891)
1360 np->cur_tx_copy->control |= ETIControl | RetryTxLC;
1361 np->cur_tx_copy->status = TXOWN;
1362 np->cur_tx_copy = np->cur_tx_copy->next_desc_logical;
1363 --np->free_tx_count;
1364 }
1365#endif
1366
1367 if (np->free_tx_count < 2)
1368 netif_stop_queue(dev);
1369 ++np->really_tx_count;
1370 iowrite32(0, np->mem + TXPDR);
1371
1372 spin_unlock_irqrestore(&np->lock, flags);
1373 return NETDEV_TX_OK;
1374}
1375
1376
1377/* Take lock before calling */
1378/* Chip probably hosed tx ring. Clean up. */
1379static void reset_tx_descriptors(struct net_device *dev)
1380{
1381 struct netdev_private *np = netdev_priv(dev);
1382 struct fealnx_desc *cur;
1383 int i;
1384
1385 /* initialize tx variables */
1386 np->cur_tx = &np->tx_ring[0];
1387 np->cur_tx_copy = &np->tx_ring[0];
1388 np->really_tx_count = 0;
1389 np->free_tx_count = TX_RING_SIZE;
1390
1391 for (i = 0; i < TX_RING_SIZE; i++) {
1392 cur = &np->tx_ring[i];
1393 if (cur->skbuff) {
1394 pci_unmap_single(np->pci_dev, cur->buffer,
1395 cur->skbuff->len, PCI_DMA_TODEVICE);
1396 dev_kfree_skb_any(cur->skbuff);
1397 cur->skbuff = NULL;
1398 }
1399 cur->status = 0;
1400 cur->control = 0; /* needed? */
1401 /* probably not needed. We do it for purely paranoid reasons */
1402 cur->next_desc = np->tx_ring_dma +
1403 (i + 1)*sizeof(struct fealnx_desc);
1404 cur->next_desc_logical = &np->tx_ring[i + 1];
1405 }
1406 /* for the last tx descriptor */
1407 np->tx_ring[TX_RING_SIZE - 1].next_desc = np->tx_ring_dma;
1408 np->tx_ring[TX_RING_SIZE - 1].next_desc_logical = &np->tx_ring[0];
1409}
1410
1411
1412/* Take lock and stop rx before calling this */
1413static void reset_rx_descriptors(struct net_device *dev)
1414{
1415 struct netdev_private *np = netdev_priv(dev);
1416 struct fealnx_desc *cur = np->cur_rx;
1417 int i;
1418
1419 allocate_rx_buffers(dev);
1420
1421 for (i = 0; i < RX_RING_SIZE; i++) {
1422 if (cur->skbuff)
1423 cur->status = RXOWN;
1424 cur = cur->next_desc_logical;
1425 }
1426
1427 iowrite32(np->rx_ring_dma + ((char*)np->cur_rx - (char*)np->rx_ring),
1428 np->mem + RXLBA);
1429}
1430
1431
1432/* The interrupt handler does all of the Rx thread work and cleans up
1433 after the Tx thread. */
1434static irqreturn_t intr_handler(int irq, void *dev_instance)
1435{
1436 struct net_device *dev = (struct net_device *) dev_instance;
1437 struct netdev_private *np = netdev_priv(dev);
1438 void __iomem *ioaddr = np->mem;
1439 long boguscnt = max_interrupt_work;
1440 unsigned int num_tx = 0;
1441 int handled = 0;
1442
1443 spin_lock(&np->lock);
1444
1445 iowrite32(0, ioaddr + IMR);
1446
1447 do {
1448 u32 intr_status = ioread32(ioaddr + ISR);
1449
1450 /* Acknowledge all of the current interrupt sources ASAP. */
1451 iowrite32(intr_status, ioaddr + ISR);
1452
1453 if (debug)
1454 printk(KERN_DEBUG "%s: Interrupt, status %4.4x.\n", dev->name,
1455 intr_status);
1456
1457 if (!(intr_status & np->imrvalue))
1458 break;
1459
1460 handled = 1;
1461
1462// 90/1/16 delete,
1463//
1464// if (intr_status & FBE)
1465// { /* fatal error */
1466// stop_nic_tx(ioaddr, 0);
1467// stop_nic_rx(ioaddr, 0);
1468// break;
1469// };
1470
1471 if (intr_status & TUNF)
1472 iowrite32(0, ioaddr + TXPDR);
1473
1474 if (intr_status & CNTOVF) {
1475 /* missed pkts */
1476 dev->stats.rx_missed_errors +=
1477 ioread32(ioaddr + TALLY) & 0x7fff;
1478
1479 /* crc error */
1480 dev->stats.rx_crc_errors +=
1481 (ioread32(ioaddr + TALLY) & 0x7fff0000) >> 16;
1482 }
1483
1484 if (intr_status & (RI | RBU)) {
1485 if (intr_status & RI)
1486 netdev_rx(dev);
1487 else {
1488 stop_nic_rx(ioaddr, np->crvalue);
1489 reset_rx_descriptors(dev);
1490 iowrite32(np->crvalue, ioaddr + TCRRCR);
1491 }
1492 }
1493
1494 while (np->really_tx_count) {
1495 long tx_status = np->cur_tx->status;
1496 long tx_control = np->cur_tx->control;
1497
1498 if (!(tx_control & TXLD)) { /* this pkt is combined by two tx descriptors */
1499 struct fealnx_desc *next;
1500
1501 next = np->cur_tx->next_desc_logical;
1502 tx_status = next->status;
1503 tx_control = next->control;
1504 }
1505
1506 if (tx_status & TXOWN)
1507 break;
1508
1509 if (!(np->crvalue & CR_W_ENH)) {
1510 if (tx_status & (CSL | LC | EC | UDF | HF)) {
1511 dev->stats.tx_errors++;
1512 if (tx_status & EC)
1513 dev->stats.tx_aborted_errors++;
1514 if (tx_status & CSL)
1515 dev->stats.tx_carrier_errors++;
1516 if (tx_status & LC)
1517 dev->stats.tx_window_errors++;
1518 if (tx_status & UDF)
1519 dev->stats.tx_fifo_errors++;
1520 if ((tx_status & HF) && np->mii.full_duplex == 0)
1521 dev->stats.tx_heartbeat_errors++;
1522
1523 } else {
1524 dev->stats.tx_bytes +=
1525 ((tx_control & PKTSMask) >> PKTSShift);
1526
1527 dev->stats.collisions +=
1528 ((tx_status & NCRMask) >> NCRShift);
1529 dev->stats.tx_packets++;
1530 }
1531 } else {
1532 dev->stats.tx_bytes +=
1533 ((tx_control & PKTSMask) >> PKTSShift);
1534 dev->stats.tx_packets++;
1535 }
1536
1537 /* Free the original skb. */
1538 pci_unmap_single(np->pci_dev, np->cur_tx->buffer,
1539 np->cur_tx->skbuff->len, PCI_DMA_TODEVICE);
1540 dev_kfree_skb_irq(np->cur_tx->skbuff);
1541 np->cur_tx->skbuff = NULL;
1542 --np->really_tx_count;
1543 if (np->cur_tx->control & TXLD) {
1544 np->cur_tx = np->cur_tx->next_desc_logical;
1545 ++np->free_tx_count;
1546 } else {
1547 np->cur_tx = np->cur_tx->next_desc_logical;
1548 np->cur_tx = np->cur_tx->next_desc_logical;
1549 np->free_tx_count += 2;
1550 }
1551 num_tx++;
1552 } /* end of for loop */
1553
1554 if (num_tx && np->free_tx_count >= 2)
1555 netif_wake_queue(dev);
1556
1557 /* read transmit status for enhanced mode only */
1558 if (np->crvalue & CR_W_ENH) {
1559 long data;
1560
1561 data = ioread32(ioaddr + TSR);
1562 dev->stats.tx_errors += (data & 0xff000000) >> 24;
1563 dev->stats.tx_aborted_errors +=
1564 (data & 0xff000000) >> 24;
1565 dev->stats.tx_window_errors +=
1566 (data & 0x00ff0000) >> 16;
1567 dev->stats.collisions += (data & 0x0000ffff);
1568 }
1569
1570 if (--boguscnt < 0) {
1571 printk(KERN_WARNING "%s: Too much work at interrupt, "
1572 "status=0x%4.4x.\n", dev->name, intr_status);
1573 if (!np->reset_timer_armed) {
1574 np->reset_timer_armed = 1;
1575 np->reset_timer.expires = RUN_AT(HZ/2);
1576 add_timer(&np->reset_timer);
1577 stop_nic_rxtx(ioaddr, 0);
1578 netif_stop_queue(dev);
1579 /* or netif_tx_disable(dev); ?? */
1580 /* Prevent other paths from enabling tx,rx,intrs */
1581 np->crvalue_sv = np->crvalue;
1582 np->imrvalue_sv = np->imrvalue;
1583 np->crvalue &= ~(CR_W_TXEN | CR_W_RXEN); /* or simply = 0? */
1584 np->imrvalue = 0;
1585 }
1586
1587 break;
1588 }
1589 } while (1);
1590
1591 /* read the tally counters */
1592 /* missed pkts */
1593 dev->stats.rx_missed_errors += ioread32(ioaddr + TALLY) & 0x7fff;
1594
1595 /* crc error */
1596 dev->stats.rx_crc_errors +=
1597 (ioread32(ioaddr + TALLY) & 0x7fff0000) >> 16;
1598
1599 if (debug)
1600 printk(KERN_DEBUG "%s: exiting interrupt, status=%#4.4x.\n",
1601 dev->name, ioread32(ioaddr + ISR));
1602
1603 iowrite32(np->imrvalue, ioaddr + IMR);
1604
1605 spin_unlock(&np->lock);
1606
1607 return IRQ_RETVAL(handled);
1608}
1609
1610
1611/* This routine is logically part of the interrupt handler, but separated
1612 for clarity and better register allocation. */
1613static int netdev_rx(struct net_device *dev)
1614{
1615 struct netdev_private *np = netdev_priv(dev);
1616 void __iomem *ioaddr = np->mem;
1617
1618 /* If EOP is set on the next entry, it's a new packet. Send it up. */
1619 while (!(np->cur_rx->status & RXOWN) && np->cur_rx->skbuff) {
1620 s32 rx_status = np->cur_rx->status;
1621
1622 if (np->really_rx_count == 0)
1623 break;
1624
1625 if (debug)
1626 printk(KERN_DEBUG " netdev_rx() status was %8.8x.\n", rx_status);
1627
1628 if ((!((rx_status & RXFSD) && (rx_status & RXLSD))) ||
1629 (rx_status & ErrorSummary)) {
1630 if (rx_status & ErrorSummary) { /* there was a fatal error */
1631 if (debug)
1632 printk(KERN_DEBUG
1633 "%s: Receive error, Rx status %8.8x.\n",
1634 dev->name, rx_status);
1635
1636 dev->stats.rx_errors++; /* end of a packet. */
1637 if (rx_status & (LONG | RUNT))
1638 dev->stats.rx_length_errors++;
1639 if (rx_status & RXER)
1640 dev->stats.rx_frame_errors++;
1641 if (rx_status & CRC)
1642 dev->stats.rx_crc_errors++;
1643 } else {
1644 int need_to_reset = 0;
1645 int desno = 0;
1646
1647 if (rx_status & RXFSD) { /* this pkt is too long, over one rx buffer */
1648 struct fealnx_desc *cur;
1649
1650 /* check this packet is received completely? */
1651 cur = np->cur_rx;
1652 while (desno <= np->really_rx_count) {
1653 ++desno;
1654 if ((!(cur->status & RXOWN)) &&
1655 (cur->status & RXLSD))
1656 break;
1657 /* goto next rx descriptor */
1658 cur = cur->next_desc_logical;
1659 }
1660 if (desno > np->really_rx_count)
1661 need_to_reset = 1;
1662 } else /* RXLSD did not find, something error */
1663 need_to_reset = 1;
1664
1665 if (need_to_reset == 0) {
1666 int i;
1667
1668 dev->stats.rx_length_errors++;
1669
1670 /* free all rx descriptors related this long pkt */
1671 for (i = 0; i < desno; ++i) {
1672 if (!np->cur_rx->skbuff) {
1673 printk(KERN_DEBUG
1674 "%s: I'm scared\n", dev->name);
1675 break;
1676 }
1677 np->cur_rx->status = RXOWN;
1678 np->cur_rx = np->cur_rx->next_desc_logical;
1679 }
1680 continue;
1681 } else { /* rx error, need to reset this chip */
1682 stop_nic_rx(ioaddr, np->crvalue);
1683 reset_rx_descriptors(dev);
1684 iowrite32(np->crvalue, ioaddr + TCRRCR);
1685 }
1686 break; /* exit the while loop */
1687 }
1688 } else { /* this received pkt is ok */
1689
1690 struct sk_buff *skb;
1691 /* Omit the four octet CRC from the length. */
1692 short pkt_len = ((rx_status & FLNGMASK) >> FLNGShift) - 4;
1693
1694#ifndef final_version
1695 if (debug)
1696 printk(KERN_DEBUG " netdev_rx() normal Rx pkt length %d"
1697 " status %x.\n", pkt_len, rx_status);
1698#endif
1699
1700 /* Check if the packet is long enough to accept without copying
1701 to a minimally-sized skbuff. */
1702 if (pkt_len < rx_copybreak &&
1703 (skb = netdev_alloc_skb(dev, pkt_len + 2)) != NULL) {
1704 skb_reserve(skb, 2); /* 16 byte align the IP header */
1705 pci_dma_sync_single_for_cpu(np->pci_dev,
1706 np->cur_rx->buffer,
1707 np->rx_buf_sz,
1708 PCI_DMA_FROMDEVICE);
1709 /* Call copy + cksum if available. */
1710
1711#if ! defined(__alpha__)
1712 skb_copy_to_linear_data(skb,
1713 np->cur_rx->skbuff->data, pkt_len);
1714 skb_put(skb, pkt_len);
1715#else
1716 memcpy(skb_put(skb, pkt_len),
1717 np->cur_rx->skbuff->data, pkt_len);
1718#endif
1719 pci_dma_sync_single_for_device(np->pci_dev,
1720 np->cur_rx->buffer,
1721 np->rx_buf_sz,
1722 PCI_DMA_FROMDEVICE);
1723 } else {
1724 pci_unmap_single(np->pci_dev,
1725 np->cur_rx->buffer,
1726 np->rx_buf_sz,
1727 PCI_DMA_FROMDEVICE);
1728 skb_put(skb = np->cur_rx->skbuff, pkt_len);
1729 np->cur_rx->skbuff = NULL;
1730 --np->really_rx_count;
1731 }
1732 skb->protocol = eth_type_trans(skb, dev);
1733 netif_rx(skb);
1734 dev->stats.rx_packets++;
1735 dev->stats.rx_bytes += pkt_len;
1736 }
1737
1738 np->cur_rx = np->cur_rx->next_desc_logical;
1739 } /* end of while loop */
1740
1741 /* allocate skb for rx buffers */
1742 allocate_rx_buffers(dev);
1743
1744 return 0;
1745}
1746
1747
1748static struct net_device_stats *get_stats(struct net_device *dev)
1749{
1750 struct netdev_private *np = netdev_priv(dev);
1751 void __iomem *ioaddr = np->mem;
1752
1753 /* The chip only need report frame silently dropped. */
1754 if (netif_running(dev)) {
1755 dev->stats.rx_missed_errors +=
1756 ioread32(ioaddr + TALLY) & 0x7fff;
1757 dev->stats.rx_crc_errors +=
1758 (ioread32(ioaddr + TALLY) & 0x7fff0000) >> 16;
1759 }
1760
1761 return &dev->stats;
1762}
1763
1764
1765/* for dev->set_multicast_list */
1766static void set_rx_mode(struct net_device *dev)
1767{
1768 spinlock_t *lp = &((struct netdev_private *)netdev_priv(dev))->lock;
1769 unsigned long flags;
1770 spin_lock_irqsave(lp, flags);
1771 __set_rx_mode(dev);
1772 spin_unlock_irqrestore(lp, flags);
1773}
1774
1775
1776/* Take lock before calling */
1777static void __set_rx_mode(struct net_device *dev)
1778{
1779 struct netdev_private *np = netdev_priv(dev);
1780 void __iomem *ioaddr = np->mem;
1781 u32 mc_filter[2]; /* Multicast hash filter */
1782 u32 rx_mode;
1783
1784 if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
1785 memset(mc_filter, 0xff, sizeof(mc_filter));
1786 rx_mode = CR_W_PROM | CR_W_AB | CR_W_AM;
1787 } else if ((netdev_mc_count(dev) > multicast_filter_limit) ||
1788 (dev->flags & IFF_ALLMULTI)) {
1789 /* Too many to match, or accept all multicasts. */
1790 memset(mc_filter, 0xff, sizeof(mc_filter));
1791 rx_mode = CR_W_AB | CR_W_AM;
1792 } else {
1793 struct netdev_hw_addr *ha;
1794
1795 memset(mc_filter, 0, sizeof(mc_filter));
1796 netdev_for_each_mc_addr(ha, dev) {
1797 unsigned int bit;
1798 bit = (ether_crc(ETH_ALEN, ha->addr) >> 26) ^ 0x3F;
1799 mc_filter[bit >> 5] |= (1 << bit);
1800 }
1801 rx_mode = CR_W_AB | CR_W_AM;
1802 }
1803
1804 stop_nic_rxtx(ioaddr, np->crvalue);
1805
1806 iowrite32(mc_filter[0], ioaddr + MAR0);
1807 iowrite32(mc_filter[1], ioaddr + MAR1);
1808 np->crvalue &= ~CR_W_RXMODEMASK;
1809 np->crvalue |= rx_mode;
1810 iowrite32(np->crvalue, ioaddr + TCRRCR);
1811}
1812
1813static void netdev_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1814{
1815 struct netdev_private *np = netdev_priv(dev);
1816
1817 strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
1818 strlcpy(info->version, DRV_VERSION, sizeof(info->version));
1819 strlcpy(info->bus_info, pci_name(np->pci_dev), sizeof(info->bus_info));
1820}
1821
1822static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1823{
1824 struct netdev_private *np = netdev_priv(dev);
1825 int rc;
1826
1827 spin_lock_irq(&np->lock);
1828 rc = mii_ethtool_gset(&np->mii, cmd);
1829 spin_unlock_irq(&np->lock);
1830
1831 return rc;
1832}
1833
1834static int netdev_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1835{
1836 struct netdev_private *np = netdev_priv(dev);
1837 int rc;
1838
1839 spin_lock_irq(&np->lock);
1840 rc = mii_ethtool_sset(&np->mii, cmd);
1841 spin_unlock_irq(&np->lock);
1842
1843 return rc;
1844}
1845
1846static int netdev_nway_reset(struct net_device *dev)
1847{
1848 struct netdev_private *np = netdev_priv(dev);
1849 return mii_nway_restart(&np->mii);
1850}
1851
1852static u32 netdev_get_link(struct net_device *dev)
1853{
1854 struct netdev_private *np = netdev_priv(dev);
1855 return mii_link_ok(&np->mii);
1856}
1857
1858static u32 netdev_get_msglevel(struct net_device *dev)
1859{
1860 return debug;
1861}
1862
1863static void netdev_set_msglevel(struct net_device *dev, u32 value)
1864{
1865 debug = value;
1866}
1867
1868static const struct ethtool_ops netdev_ethtool_ops = {
1869 .get_drvinfo = netdev_get_drvinfo,
1870 .get_settings = netdev_get_settings,
1871 .set_settings = netdev_set_settings,
1872 .nway_reset = netdev_nway_reset,
1873 .get_link = netdev_get_link,
1874 .get_msglevel = netdev_get_msglevel,
1875 .set_msglevel = netdev_set_msglevel,
1876};
1877
1878static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1879{
1880 struct netdev_private *np = netdev_priv(dev);
1881 int rc;
1882
1883 if (!netif_running(dev))
1884 return -EINVAL;
1885
1886 spin_lock_irq(&np->lock);
1887 rc = generic_mii_ioctl(&np->mii, if_mii(rq), cmd, NULL);
1888 spin_unlock_irq(&np->lock);
1889
1890 return rc;
1891}
1892
1893
1894static int netdev_close(struct net_device *dev)
1895{
1896 struct netdev_private *np = netdev_priv(dev);
1897 void __iomem *ioaddr = np->mem;
1898 int i;
1899
1900 netif_stop_queue(dev);
1901
1902 /* Disable interrupts by clearing the interrupt mask. */
1903 iowrite32(0x0000, ioaddr + IMR);
1904
1905 /* Stop the chip's Tx and Rx processes. */
1906 stop_nic_rxtx(ioaddr, 0);
1907
1908 del_timer_sync(&np->timer);
1909 del_timer_sync(&np->reset_timer);
1910
1911 free_irq(np->pci_dev->irq, dev);
1912
1913 /* Free all the skbuffs in the Rx queue. */
1914 for (i = 0; i < RX_RING_SIZE; i++) {
1915 struct sk_buff *skb = np->rx_ring[i].skbuff;
1916
1917 np->rx_ring[i].status = 0;
1918 if (skb) {
1919 pci_unmap_single(np->pci_dev, np->rx_ring[i].buffer,
1920 np->rx_buf_sz, PCI_DMA_FROMDEVICE);
1921 dev_kfree_skb(skb);
1922 np->rx_ring[i].skbuff = NULL;
1923 }
1924 }
1925
1926 for (i = 0; i < TX_RING_SIZE; i++) {
1927 struct sk_buff *skb = np->tx_ring[i].skbuff;
1928
1929 if (skb) {
1930 pci_unmap_single(np->pci_dev, np->tx_ring[i].buffer,
1931 skb->len, PCI_DMA_TODEVICE);
1932 dev_kfree_skb(skb);
1933 np->tx_ring[i].skbuff = NULL;
1934 }
1935 }
1936
1937 return 0;
1938}
1939
1940static DEFINE_PCI_DEVICE_TABLE(fealnx_pci_tbl) = {
1941 {0x1516, 0x0800, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1942 {0x1516, 0x0803, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1},
1943 {0x1516, 0x0891, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2},
1944 {} /* terminate list */
1945};
1946MODULE_DEVICE_TABLE(pci, fealnx_pci_tbl);
1947
1948
1949static struct pci_driver fealnx_driver = {
1950 .name = "fealnx",
1951 .id_table = fealnx_pci_tbl,
1952 .probe = fealnx_init_one,
1953 .remove = __devexit_p(fealnx_remove_one),
1954};
1955
1956static int __init fealnx_init(void)
1957{
1958/* when a module, this is printed whether or not devices are found in probe */
1959#ifdef MODULE
1960 printk(version);
1961#endif
1962
1963 return pci_register_driver(&fealnx_driver);
1964}
1965
1966static void __exit fealnx_exit(void)
1967{
1968 pci_unregister_driver(&fealnx_driver);
1969}
1970
1971module_init(fealnx_init);
1972module_exit(fealnx_exit);