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[NETFILTER]: nf_nat_sip: fix NAT setup order
[linux-2.6/mini2440.git] / drivers / net / fealnx.c
blob7bb9c728a1d311367e07a0ddc611a24cf059c77c
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
31 static int debug; /* 1-> print debug message */
32 static int max_interrupt_work = 20;
33
34 /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast). */
35 static 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. */
39 static 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 */
46 static int options[MAX_UNITS] = { -1, -1, -1, -1, -1, -1, -1, -1 };
47 static 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/slab.h>
78 #include <linux/interrupt.h>
79 #include <linux/pci.h>
80 #include <linux/netdevice.h>
81 #include <linux/etherdevice.h>
82 #include <linux/skbuff.h>
83 #include <linux/init.h>
84 #include <linux/mii.h>
85 #include <linux/ethtool.h>
86 #include <linux/crc32.h>
87 #include <linux/delay.h>
88 #include <linux/bitops.h>
89
90 #include <asm/processor.h> /* Processor type for cache alignment. */
91 #include <asm/io.h>
92 #include <asm/uaccess.h>
93
94 /* These identify the driver base version and may not be removed. */
95 static char version[] =
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
110 MODULE_AUTHOR("Myson or whoever");
111 MODULE_DESCRIPTION("Myson MTD-8xx 100/10M Ethernet PCI Adapter Driver");
112 MODULE_LICENSE("GPL");
113 module_param(max_interrupt_work, int, 0);
114 module_param(debug, int, 0);
115 module_param(rx_copybreak, int, 0);
116 module_param(multicast_filter_limit, int, 0);
117 module_param_array(options, int, NULL, 0);
118 module_param_array(full_duplex, int, NULL, 0);
119 MODULE_PARM_DESC(max_interrupt_work, "fealnx maximum events handled per interrupt");
120 MODULE_PARM_DESC(debug, "fealnx enable debugging (0-1)");
121 MODULE_PARM_DESC(rx_copybreak, "fealnx copy breakpoint for copy-only-tiny-frames");
122 MODULE_PARM_DESC(multicast_filter_limit, "fealnx maximum number of filtered multicast addresses");
123 MODULE_PARM_DESC(options, "fealnx: Bits 0-3: media type, bit 17: full duplex");
124 MODULE_PARM_DESC(full_duplex, "fealnx full duplex setting(s) (1)");
125
126 enum {
127 MIN_REGION_SIZE = 136,
128 };
129
130 /* A chip capabilities table, matching the entries in pci_tbl[] above. */
131 enum chip_capability_flags {
132 HAS_MII_XCVR,
133 HAS_CHIP_XCVR,
134 };
135
136 /* 89/6/13 add, */
137 /* for different PHY */
138 enum 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
148 struct chip_info {
149 char *chip_name;
150 int flags;
151 };
152
153 static 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. */
160 enum 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. */
190 enum 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 */
215 enum 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. */
238 struct 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 */
250 enum 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
267 enum rx_desc_control_bits {
268 RXIC = 0x00800000, /* interrupt control */
269 RBSShift = 0,
270 };
271
272 enum 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
285 enum 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
375 struct 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 struct net_device_stats stats;
386
387 /* Media monitoring timer. */
388 struct timer_list timer;
389
390 /* Reset timer */
391 struct timer_list reset_timer;
392 int reset_timer_armed;
393 unsigned long crvalue_sv;
394 unsigned long imrvalue_sv;
395
396 /* Frequently used values: keep some adjacent for cache effect. */
397 int flags;
398 struct pci_dev *pci_dev;
399 unsigned long crvalue;
400 unsigned long bcrvalue;
401 unsigned long imrvalue;
402 struct fealnx_desc *cur_rx;
403 struct fealnx_desc *lack_rxbuf;
404 int really_rx_count;
405 struct fealnx_desc *cur_tx;
406 struct fealnx_desc *cur_tx_copy;
407 int really_tx_count;
408 int free_tx_count;
409 unsigned int rx_buf_sz; /* Based on MTU+slack. */
410
411 /* These values are keep track of the transceiver/media in use. */
412 unsigned int linkok;
413 unsigned int line_speed;
414 unsigned int duplexmode;
415 unsigned int default_port:4; /* Last dev->if_port value. */
416 unsigned int PHYType;
417
418 /* MII transceiver section. */
419 int mii_cnt; /* MII device addresses. */
420 unsigned char phys[2]; /* MII device addresses. */
421 struct mii_if_info mii;
422 void __iomem *mem;
423 };
424
425
426 static int mdio_read(struct net_device *dev, int phy_id, int location);
427 static void mdio_write(struct net_device *dev, int phy_id, int location, int value);
428 static int netdev_open(struct net_device *dev);
429 static void getlinktype(struct net_device *dev);
430 static void getlinkstatus(struct net_device *dev);
431 static void netdev_timer(unsigned long data);
432 static void reset_timer(unsigned long data);
433 static void tx_timeout(struct net_device *dev);
434 static void init_ring(struct net_device *dev);
435 static int start_tx(struct sk_buff *skb, struct net_device *dev);
436 static irqreturn_t intr_handler(int irq, void *dev_instance);
437 static int netdev_rx(struct net_device *dev);
438 static void set_rx_mode(struct net_device *dev);
439 static void __set_rx_mode(struct net_device *dev);
440 static struct net_device_stats *get_stats(struct net_device *dev);
441 static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
442 static const struct ethtool_ops netdev_ethtool_ops;
443 static int netdev_close(struct net_device *dev);
444 static void reset_rx_descriptors(struct net_device *dev);
445 static void reset_tx_descriptors(struct net_device *dev);
446
447 static void stop_nic_rx(void __iomem *ioaddr, long crvalue)
448 {
449 int delay = 0x1000;
450 iowrite32(crvalue & ~(CR_W_RXEN), ioaddr + TCRRCR);
451 while (--delay) {
452 if ( (ioread32(ioaddr + TCRRCR) & CR_R_RXSTOP) == CR_R_RXSTOP)
453 break;
454 }
455 }
456
457
458 static void stop_nic_rxtx(void __iomem *ioaddr, long crvalue)
459 {
460 int delay = 0x1000;
461 iowrite32(crvalue & ~(CR_W_RXEN+CR_W_TXEN), ioaddr + TCRRCR);
462 while (--delay) {
463 if ( (ioread32(ioaddr + TCRRCR) & (CR_R_RXSTOP+CR_R_TXSTOP))
464 == (CR_R_RXSTOP+CR_R_TXSTOP) )
465 break;
466 }
467 }
468
469
470 static int __devinit fealnx_init_one(struct pci_dev *pdev,
471 const struct pci_device_id *ent)
472 {
473 struct netdev_private *np;
474 int i, option, err, irq;
475 static int card_idx = -1;
476 char boardname[12];
477 void __iomem *ioaddr;
478 unsigned long len;
479 unsigned int chip_id = ent->driver_data;
480 struct net_device *dev;
481 void *ring_space;
482 dma_addr_t ring_dma;
483 #ifdef USE_IO_OPS
484 int bar = 0;
485 #else
486 int bar = 1;
487 #endif
488 DECLARE_MAC_BUF(mac);
489
490 /* when built into the kernel, we only print version if device is found */
491 #ifndef MODULE
492 static int printed_version;
493 if (!printed_version++)
494 printk(version);
495 #endif
496
497 card_idx++;
498 sprintf(boardname, "fealnx%d", card_idx);
499
500 option = card_idx < MAX_UNITS ? options[card_idx] : 0;
501
502 i = pci_enable_device(pdev);
503 if (i) return i;
504 pci_set_master(pdev);
505
506 len = pci_resource_len(pdev, bar);
507 if (len < MIN_REGION_SIZE) {
508 dev_err(&pdev->dev,
509 "region size %ld too small, aborting\n", len);
510 return -ENODEV;
511 }
512
513 i = pci_request_regions(pdev, boardname);
514 if (i)
515 return i;
516
517 irq = pdev->irq;
518
519 ioaddr = pci_iomap(pdev, bar, len);
520 if (!ioaddr) {
521 err = -ENOMEM;
522 goto err_out_res;
523 }
524
525 dev = alloc_etherdev(sizeof(struct netdev_private));
526 if (!dev) {
527 err = -ENOMEM;
528 goto err_out_unmap;
529 }
530 SET_NETDEV_DEV(dev, &pdev->dev);
531
532 /* read ethernet id */
533 for (i = 0; i < 6; ++i)
534 dev->dev_addr[i] = ioread8(ioaddr + PAR0 + i);
535
536 /* Reset the chip to erase previous misconfiguration. */
537 iowrite32(0x00000001, ioaddr + BCR);
538
539 dev->base_addr = (unsigned long)ioaddr;
540 dev->irq = irq;
541
542 /* Make certain the descriptor lists are aligned. */
543 np = netdev_priv(dev);
544 np->mem = ioaddr;
545 spin_lock_init(&np->lock);
546 np->pci_dev = pdev;
547 np->flags = skel_netdrv_tbl[chip_id].flags;
548 pci_set_drvdata(pdev, dev);
549 np->mii.dev = dev;
550 np->mii.mdio_read = mdio_read;
551 np->mii.mdio_write = mdio_write;
552 np->mii.phy_id_mask = 0x1f;
553 np->mii.reg_num_mask = 0x1f;
554
555 ring_space = pci_alloc_consistent(pdev, RX_TOTAL_SIZE, &ring_dma);
556 if (!ring_space) {
557 err = -ENOMEM;
558 goto err_out_free_dev;
559 }
560 np->rx_ring = (struct fealnx_desc *)ring_space;
561 np->rx_ring_dma = ring_dma;
562
563 ring_space = pci_alloc_consistent(pdev, TX_TOTAL_SIZE, &ring_dma);
564 if (!ring_space) {
565 err = -ENOMEM;
566 goto err_out_free_rx;
567 }
568 np->tx_ring = (struct fealnx_desc *)ring_space;
569 np->tx_ring_dma = ring_dma;
570
571 /* find the connected MII xcvrs */
572 if (np->flags == HAS_MII_XCVR) {
573 int phy, phy_idx = 0;
574
575 for (phy = 1; phy < 32 && phy_idx < 4; phy++) {
576 int mii_status = mdio_read(dev, phy, 1);
577
578 if (mii_status != 0xffff && mii_status != 0x0000) {
579 np->phys[phy_idx++] = phy;
580 dev_info(&pdev->dev,
581 "MII PHY found at address %d, status "
582 "0x%4.4x.\n", phy, mii_status);
583 /* get phy type */
584 {
585 unsigned int data;
586
587 data = mdio_read(dev, np->phys[0], 2);
588 if (data == SeeqPHYID0)
589 np->PHYType = SeeqPHY;
590 else if (data == AhdocPHYID0)
591 np->PHYType = AhdocPHY;
592 else if (data == MarvellPHYID0)
593 np->PHYType = MarvellPHY;
594 else if (data == MysonPHYID0)
595 np->PHYType = Myson981;
596 else if (data == LevelOnePHYID0)
597 np->PHYType = LevelOnePHY;
598 else
599 np->PHYType = OtherPHY;
600 }
601 }
602 }
603
604 np->mii_cnt = phy_idx;
605 if (phy_idx == 0)
606 dev_warn(&pdev->dev,
607 "MII PHY not found -- this device may "
608 "not operate correctly.\n");
609 } else {
610 np->phys[0] = 32;
611 /* 89/6/23 add, (begin) */
612 /* get phy type */
613 if (ioread32(ioaddr + PHYIDENTIFIER) == MysonPHYID)
614 np->PHYType = MysonPHY;
615 else
616 np->PHYType = OtherPHY;
617 }
618 np->mii.phy_id = np->phys[0];
619
620 if (dev->mem_start)
621 option = dev->mem_start;
622
623 /* The lower four bits are the media type. */
624 if (option > 0) {
625 if (option & 0x200)
626 np->mii.full_duplex = 1;
627 np->default_port = option & 15;
628 }
629
630 if (card_idx < MAX_UNITS && full_duplex[card_idx] > 0)
631 np->mii.full_duplex = full_duplex[card_idx];
632
633 if (np->mii.full_duplex) {
634 dev_info(&pdev->dev, "Media type forced to Full Duplex.\n");
635 /* 89/6/13 add, (begin) */
636 // if (np->PHYType==MarvellPHY)
637 if ((np->PHYType == MarvellPHY) || (np->PHYType == LevelOnePHY)) {
638 unsigned int data;
639
640 data = mdio_read(dev, np->phys[0], 9);
641 data = (data & 0xfcff) | 0x0200;
642 mdio_write(dev, np->phys[0], 9, data);
643 }
644 /* 89/6/13 add, (end) */
645 if (np->flags == HAS_MII_XCVR)
646 mdio_write(dev, np->phys[0], MII_ADVERTISE, ADVERTISE_FULL);
647 else
648 iowrite32(ADVERTISE_FULL, ioaddr + ANARANLPAR);
649 np->mii.force_media = 1;
650 }
651
652 /* The chip-specific entries in the device structure. */
653 dev->open = &netdev_open;
654 dev->hard_start_xmit = &start_tx;
655 dev->stop = &netdev_close;
656 dev->get_stats = &get_stats;
657 dev->set_multicast_list = &set_rx_mode;
658 dev->do_ioctl = &mii_ioctl;
659 dev->ethtool_ops = &netdev_ethtool_ops;
660 dev->tx_timeout = &tx_timeout;
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, %s, IRQ %d.\n",
668 dev->name, skel_netdrv_tbl[chip_id].chip_name, ioaddr,
669 print_mac(mac, dev->dev_addr), irq);
670
671 return 0;
672
673 err_out_free_tx:
674 pci_free_consistent(pdev, TX_TOTAL_SIZE, np->tx_ring, np->tx_ring_dma);
675 err_out_free_rx:
676 pci_free_consistent(pdev, RX_TOTAL_SIZE, np->rx_ring, np->rx_ring_dma);
677 err_out_free_dev:
678 free_netdev(dev);
679 err_out_unmap:
680 pci_iounmap(pdev, ioaddr);
681 err_out_res:
682 pci_release_regions(pdev);
683 return err;
684 }
685
686
687 static 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
708 static 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
757 static 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
796 static 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
828 static int netdev_open(struct net_device *dev)
829 {
830 struct netdev_private *np = netdev_priv(dev);
831 void __iomem *ioaddr = np->mem;
832 int i;
833
834 iowrite32(0x00000001, ioaddr + BCR); /* Reset */
835
836 if (request_irq(dev->irq, &intr_handler, IRQF_SHARED, dev->name, dev))
837 return -EAGAIN;
838
839 for (i = 0; i < 3; i++)
840 iowrite16(((unsigned short*)dev->dev_addr)[i],
841 ioaddr + PAR0 + i*2);
842
843 init_ring(dev);
844
845 iowrite32(np->rx_ring_dma, ioaddr + RXLBA);
846 iowrite32(np->tx_ring_dma, ioaddr + TXLBA);
847
848 /* Initialize other registers. */
849 /* Configure the PCI bus bursts and FIFO thresholds.
850 486: Set 8 longword burst.
851 586: no burst limit.
852 Burst length 5:3
853 0 0 0 1
854 0 0 1 4
855 0 1 0 8
856 0 1 1 16
857 1 0 0 32
858 1 0 1 64
859 1 1 0 128
860 1 1 1 256
861 Wait the specified 50 PCI cycles after a reset by initializing
862 Tx and Rx queues and the address filter list.
863 FIXME (Ueimor): optimistic for alpha + posted writes ? */
864 #if defined(__powerpc__) || defined(__sparc__)
865 // 89/9/1 modify,
866 // np->bcrvalue=0x04 | 0x0x38; /* big-endian, 256 burst length */
867 np->bcrvalue = 0x04 | 0x10; /* big-endian, tx 8 burst length */
868 np->crvalue = 0xe00; /* rx 128 burst length */
869 #elif defined(__alpha__) || defined(__x86_64__)
870 // 89/9/1 modify,
871 // np->bcrvalue=0x38; /* little-endian, 256 burst length */
872 np->bcrvalue = 0x10; /* little-endian, 8 burst length */
873 np->crvalue = 0xe00; /* rx 128 burst length */
874 #elif defined(__i386__)
875 #if defined(MODULE)
876 // 89/9/1 modify,
877 // np->bcrvalue=0x38; /* little-endian, 256 burst length */
878 np->bcrvalue = 0x10; /* little-endian, 8 burst length */
879 np->crvalue = 0xe00; /* rx 128 burst length */
880 #else
881 /* When not a module we can work around broken '486 PCI boards. */
882 #define x86 boot_cpu_data.x86
883 // 89/9/1 modify,
884 // np->bcrvalue=(x86 <= 4 ? 0x10 : 0x38);
885 np->bcrvalue = 0x10;
886 np->crvalue = (x86 <= 4 ? 0xa00 : 0xe00);
887 if (x86 <= 4)
888 printk(KERN_INFO "%s: This is a 386/486 PCI system, setting burst "
889 "length to %x.\n", dev->name, (x86 <= 4 ? 0x10 : 0x38));
890 #endif
891 #else
892 // 89/9/1 modify,
893 // np->bcrvalue=0x38;
894 np->bcrvalue = 0x10;
895 np->crvalue = 0xe00; /* rx 128 burst length */
896 #warning Processor architecture undefined!
897 #endif
898 // 89/12/29 add,
899 // 90/1/16 modify,
900 // np->imrvalue=FBE|TUNF|CNTOVF|RBU|TI|RI;
901 np->imrvalue = TUNF | CNTOVF | RBU | TI | RI;
902 if (np->pci_dev->device == 0x891) {
903 np->bcrvalue |= 0x200; /* set PROG bit */
904 np->crvalue |= CR_W_ENH; /* set enhanced bit */
905 np->imrvalue |= ETI;
906 }
907 iowrite32(np->bcrvalue, ioaddr + BCR);
908
909 if (dev->if_port == 0)
910 dev->if_port = np->default_port;
911
912 iowrite32(0, ioaddr + RXPDR);
913 // 89/9/1 modify,
914 // np->crvalue = 0x00e40001; /* tx store and forward, tx/rx enable */
915 np->crvalue |= 0x00e40001; /* tx store and forward, tx/rx enable */
916 np->mii.full_duplex = np->mii.force_media;
917 getlinkstatus(dev);
918 if (np->linkok)
919 getlinktype(dev);
920 __set_rx_mode(dev);
921
922 netif_start_queue(dev);
923
924 /* Clear and Enable interrupts by setting the interrupt mask. */
925 iowrite32(FBE | TUNF | CNTOVF | RBU | TI | RI, ioaddr + ISR);
926 iowrite32(np->imrvalue, ioaddr + IMR);
927
928 if (debug)
929 printk(KERN_DEBUG "%s: Done netdev_open().\n", dev->name);
930
931 /* Set the timer to check for link beat. */
932 init_timer(&np->timer);
933 np->timer.expires = RUN_AT(3 * HZ);
934 np->timer.data = (unsigned long) dev;
935 np->timer.function = &netdev_timer;
936
937 /* timer handler */
938 add_timer(&np->timer);
939
940 init_timer(&np->reset_timer);
941 np->reset_timer.data = (unsigned long) dev;
942 np->reset_timer.function = &reset_timer;
943 np->reset_timer_armed = 0;
944
945 return 0;
946 }
947
948
949 static void getlinkstatus(struct net_device *dev)
950 /* function: Routine will read MII Status Register to get link status. */
951 /* input : dev... pointer to the adapter block. */
952 /* output : none. */
953 {
954 struct netdev_private *np = netdev_priv(dev);
955 unsigned int i, DelayTime = 0x1000;
956
957 np->linkok = 0;
958
959 if (np->PHYType == MysonPHY) {
960 for (i = 0; i < DelayTime; ++i) {
961 if (ioread32(np->mem + BMCRSR) & LinkIsUp2) {
962 np->linkok = 1;
963 return;
964 }
965 udelay(100);
966 }
967 } else {
968 for (i = 0; i < DelayTime; ++i) {
969 if (mdio_read(dev, np->phys[0], MII_BMSR) & BMSR_LSTATUS) {
970 np->linkok = 1;
971 return;
972 }
973 udelay(100);
974 }
975 }
976 }
977
978
979 static void getlinktype(struct net_device *dev)
980 {
981 struct netdev_private *np = netdev_priv(dev);
982
983 if (np->PHYType == MysonPHY) { /* 3-in-1 case */
984 if (ioread32(np->mem + TCRRCR) & CR_R_FD)
985 np->duplexmode = 2; /* full duplex */
986 else
987 np->duplexmode = 1; /* half duplex */
988 if (ioread32(np->mem + TCRRCR) & CR_R_PS10)
989 np->line_speed = 1; /* 10M */
990 else
991 np->line_speed = 2; /* 100M */
992 } else {
993 if (np->PHYType == SeeqPHY) { /* this PHY is SEEQ 80225 */
994 unsigned int data;
995
996 data = mdio_read(dev, np->phys[0], MIIRegister18);
997 if (data & SPD_DET_100)
998 np->line_speed = 2; /* 100M */
999 else
1000 np->line_speed = 1; /* 10M */
1001 if (data & DPLX_DET_FULL)
1002 np->duplexmode = 2; /* full duplex mode */
1003 else
1004 np->duplexmode = 1; /* half duplex mode */
1005 } else if (np->PHYType == AhdocPHY) {
1006 unsigned int data;
1007
1008 data = mdio_read(dev, np->phys[0], DiagnosticReg);
1009 if (data & Speed_100)
1010 np->line_speed = 2; /* 100M */
1011 else
1012 np->line_speed = 1; /* 10M */
1013 if (data & DPLX_FULL)
1014 np->duplexmode = 2; /* full duplex mode */
1015 else
1016 np->duplexmode = 1; /* half duplex mode */
1017 }
1018 /* 89/6/13 add, (begin) */
1019 else if (np->PHYType == MarvellPHY) {
1020 unsigned int data;
1021
1022 data = mdio_read(dev, np->phys[0], SpecificReg);
1023 if (data & Full_Duplex)
1024 np->duplexmode = 2; /* full duplex mode */
1025 else
1026 np->duplexmode = 1; /* half duplex mode */
1027 data &= SpeedMask;
1028 if (data == Speed_1000M)
1029 np->line_speed = 3; /* 1000M */
1030 else if (data == Speed_100M)
1031 np->line_speed = 2; /* 100M */
1032 else
1033 np->line_speed = 1; /* 10M */
1034 }
1035 /* 89/6/13 add, (end) */
1036 /* 89/7/27 add, (begin) */
1037 else if (np->PHYType == Myson981) {
1038 unsigned int data;
1039
1040 data = mdio_read(dev, np->phys[0], StatusRegister);
1041
1042 if (data & SPEED100)
1043 np->line_speed = 2;
1044 else
1045 np->line_speed = 1;
1046
1047 if (data & FULLMODE)
1048 np->duplexmode = 2;
1049 else
1050 np->duplexmode = 1;
1051 }
1052 /* 89/7/27 add, (end) */
1053 /* 89/12/29 add */
1054 else if (np->PHYType == LevelOnePHY) {
1055 unsigned int data;
1056
1057 data = mdio_read(dev, np->phys[0], SpecificReg);
1058 if (data & LXT1000_Full)
1059 np->duplexmode = 2; /* full duplex mode */
1060 else
1061 np->duplexmode = 1; /* half duplex mode */
1062 data &= SpeedMask;
1063 if (data == LXT1000_1000M)
1064 np->line_speed = 3; /* 1000M */
1065 else if (data == LXT1000_100M)
1066 np->line_speed = 2; /* 100M */
1067 else
1068 np->line_speed = 1; /* 10M */
1069 }
1070 np->crvalue &= (~CR_W_PS10) & (~CR_W_FD) & (~CR_W_PS1000);
1071 if (np->line_speed == 1)
1072 np->crvalue |= CR_W_PS10;
1073 else if (np->line_speed == 3)
1074 np->crvalue |= CR_W_PS1000;
1075 if (np->duplexmode == 2)
1076 np->crvalue |= CR_W_FD;
1077 }
1078 }
1079
1080
1081 /* Take lock before calling this */
1082 static void allocate_rx_buffers(struct net_device *dev)
1083 {
1084 struct netdev_private *np = netdev_priv(dev);
1085
1086 /* allocate skb for rx buffers */
1087 while (np->really_rx_count != RX_RING_SIZE) {
1088 struct sk_buff *skb;
1089
1090 skb = dev_alloc_skb(np->rx_buf_sz);
1091 if (skb == NULL)
1092 break; /* Better luck next round. */
1093
1094 while (np->lack_rxbuf->skbuff)
1095 np->lack_rxbuf = np->lack_rxbuf->next_desc_logical;
1096
1097 skb->dev = dev; /* Mark as being used by this device. */
1098 np->lack_rxbuf->skbuff = skb;
1099 np->lack_rxbuf->buffer = pci_map_single(np->pci_dev, skb->data,
1100 np->rx_buf_sz, PCI_DMA_FROMDEVICE);
1101 np->lack_rxbuf->status = RXOWN;
1102 ++np->really_rx_count;
1103 }
1104 }
1105
1106
1107 static void netdev_timer(unsigned long data)
1108 {
1109 struct net_device *dev = (struct net_device *) data;
1110 struct netdev_private *np = netdev_priv(dev);
1111 void __iomem *ioaddr = np->mem;
1112 int old_crvalue = np->crvalue;
1113 unsigned int old_linkok = np->linkok;
1114 unsigned long flags;
1115
1116 if (debug)
1117 printk(KERN_DEBUG "%s: Media selection timer tick, status %8.8x "
1118 "config %8.8x.\n", dev->name, ioread32(ioaddr + ISR),
1119 ioread32(ioaddr + TCRRCR));
1120
1121 spin_lock_irqsave(&np->lock, flags);
1122
1123 if (np->flags == HAS_MII_XCVR) {
1124 getlinkstatus(dev);
1125 if ((old_linkok == 0) && (np->linkok == 1)) { /* we need to detect the media type again */
1126 getlinktype(dev);
1127 if (np->crvalue != old_crvalue) {
1128 stop_nic_rxtx(ioaddr, np->crvalue);
1129 iowrite32(np->crvalue, ioaddr + TCRRCR);
1130 }
1131 }
1132 }
1133
1134 allocate_rx_buffers(dev);
1135
1136 spin_unlock_irqrestore(&np->lock, flags);
1137
1138 np->timer.expires = RUN_AT(10 * HZ);
1139 add_timer(&np->timer);
1140 }
1141
1142
1143 /* Take lock before calling */
1144 /* Reset chip and disable rx, tx and interrupts */
1145 static void reset_and_disable_rxtx(struct net_device *dev)
1146 {
1147 struct netdev_private *np = netdev_priv(dev);
1148 void __iomem *ioaddr = np->mem;
1149 int delay=51;
1150
1151 /* Reset the chip's Tx and Rx processes. */
1152 stop_nic_rxtx(ioaddr, 0);
1153
1154 /* Disable interrupts by clearing the interrupt mask. */
1155 iowrite32(0, ioaddr + IMR);
1156
1157 /* Reset the chip to erase previous misconfiguration. */
1158 iowrite32(0x00000001, ioaddr + BCR);
1159
1160 /* Ueimor: wait for 50 PCI cycles (and flush posted writes btw).
1161 We surely wait too long (address+data phase). Who cares? */
1162 while (--delay) {
1163 ioread32(ioaddr + BCR);
1164 rmb();
1165 }
1166 }
1167
1168
1169 /* Take lock before calling */
1170 /* Restore chip after reset */
1171 static void enable_rxtx(struct net_device *dev)
1172 {
1173 struct netdev_private *np = netdev_priv(dev);
1174 void __iomem *ioaddr = np->mem;
1175
1176 reset_rx_descriptors(dev);
1177
1178 iowrite32(np->tx_ring_dma + ((char*)np->cur_tx - (char*)np->tx_ring),
1179 ioaddr + TXLBA);
1180 iowrite32(np->rx_ring_dma + ((char*)np->cur_rx - (char*)np->rx_ring),
1181 ioaddr + RXLBA);
1182
1183 iowrite32(np->bcrvalue, ioaddr + BCR);
1184
1185 iowrite32(0, ioaddr + RXPDR);
1186 __set_rx_mode(dev); /* changes np->crvalue, writes it into TCRRCR */
1187
1188 /* Clear and Enable interrupts by setting the interrupt mask. */
1189 iowrite32(FBE | TUNF | CNTOVF | RBU | TI | RI, ioaddr + ISR);
1190 iowrite32(np->imrvalue, ioaddr + IMR);
1191
1192 iowrite32(0, ioaddr + TXPDR);
1193 }
1194
1195
1196 static void reset_timer(unsigned long data)
1197 {
1198 struct net_device *dev = (struct net_device *) data;
1199 struct netdev_private *np = netdev_priv(dev);
1200 unsigned long flags;
1201
1202 printk(KERN_WARNING "%s: resetting tx and rx machinery\n", dev->name);
1203
1204 spin_lock_irqsave(&np->lock, flags);
1205 np->crvalue = np->crvalue_sv;
1206 np->imrvalue = np->imrvalue_sv;
1207
1208 reset_and_disable_rxtx(dev);
1209 /* works for me without this:
1210 reset_tx_descriptors(dev); */
1211 enable_rxtx(dev);
1212 netif_start_queue(dev); /* FIXME: or netif_wake_queue(dev); ? */
1213
1214 np->reset_timer_armed = 0;
1215
1216 spin_unlock_irqrestore(&np->lock, flags);
1217 }
1218
1219
1220 static void tx_timeout(struct net_device *dev)
1221 {
1222 struct netdev_private *np = netdev_priv(dev);
1223 void __iomem *ioaddr = np->mem;
1224 unsigned long flags;
1225 int i;
1226
1227 printk(KERN_WARNING "%s: Transmit timed out, status %8.8x,"
1228 " resetting...\n", dev->name, ioread32(ioaddr + ISR));
1229
1230 {
1231 printk(KERN_DEBUG " Rx ring %p: ", np->rx_ring);
1232 for (i = 0; i < RX_RING_SIZE; i++)
1233 printk(" %8.8x", (unsigned int) np->rx_ring[i].status);
1234 printk("\n" KERN_DEBUG " Tx ring %p: ", np->tx_ring);
1235 for (i = 0; i < TX_RING_SIZE; i++)
1236 printk(" %4.4x", np->tx_ring[i].status);
1237 printk("\n");
1238 }
1239
1240 spin_lock_irqsave(&np->lock, flags);
1241
1242 reset_and_disable_rxtx(dev);
1243 reset_tx_descriptors(dev);
1244 enable_rxtx(dev);
1245
1246 spin_unlock_irqrestore(&np->lock, flags);
1247
1248 dev->trans_start = jiffies;
1249 np->stats.tx_errors++;
1250 netif_wake_queue(dev); /* or .._start_.. ?? */
1251 }
1252
1253
1254 /* Initialize the Rx and Tx rings, along with various 'dev' bits. */
1255 static void init_ring(struct net_device *dev)
1256 {
1257 struct netdev_private *np = netdev_priv(dev);
1258 int i;
1259
1260 /* initialize rx variables */
1261 np->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32);
1262 np->cur_rx = &np->rx_ring[0];
1263 np->lack_rxbuf = np->rx_ring;
1264 np->really_rx_count = 0;
1265
1266 /* initial rx descriptors. */
1267 for (i = 0; i < RX_RING_SIZE; i++) {
1268 np->rx_ring[i].status = 0;
1269 np->rx_ring[i].control = np->rx_buf_sz << RBSShift;
1270 np->rx_ring[i].next_desc = np->rx_ring_dma +
1271 (i + 1)*sizeof(struct fealnx_desc);
1272 np->rx_ring[i].next_desc_logical = &np->rx_ring[i + 1];
1273 np->rx_ring[i].skbuff = NULL;
1274 }
1275
1276 /* for the last rx descriptor */
1277 np->rx_ring[i - 1].next_desc = np->rx_ring_dma;
1278 np->rx_ring[i - 1].next_desc_logical = np->rx_ring;
1279
1280 /* allocate skb for rx buffers */
1281 for (i = 0; i < RX_RING_SIZE; i++) {
1282 struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz);
1283
1284 if (skb == NULL) {
1285 np->lack_rxbuf = &np->rx_ring[i];
1286 break;
1287 }
1288
1289 ++np->really_rx_count;
1290 np->rx_ring[i].skbuff = skb;
1291 skb->dev = dev; /* Mark as being used by this device. */
1292 np->rx_ring[i].buffer = pci_map_single(np->pci_dev, skb->data,
1293 np->rx_buf_sz, PCI_DMA_FROMDEVICE);
1294 np->rx_ring[i].status = RXOWN;
1295 np->rx_ring[i].control |= RXIC;
1296 }
1297
1298 /* initialize tx variables */
1299 np->cur_tx = &np->tx_ring[0];
1300 np->cur_tx_copy = &np->tx_ring[0];
1301 np->really_tx_count = 0;
1302 np->free_tx_count = TX_RING_SIZE;
1303
1304 for (i = 0; i < TX_RING_SIZE; i++) {
1305 np->tx_ring[i].status = 0;
1306 /* do we need np->tx_ring[i].control = XXX; ?? */
1307 np->tx_ring[i].next_desc = np->tx_ring_dma +
1308 (i + 1)*sizeof(struct fealnx_desc);
1309 np->tx_ring[i].next_desc_logical = &np->tx_ring[i + 1];
1310 np->tx_ring[i].skbuff = NULL;
1311 }
1312
1313 /* for the last tx descriptor */
1314 np->tx_ring[i - 1].next_desc = np->tx_ring_dma;
1315 np->tx_ring[i - 1].next_desc_logical = &np->tx_ring[0];
1316 }
1317
1318
1319 static int start_tx(struct sk_buff *skb, struct net_device *dev)
1320 {
1321 struct netdev_private *np = netdev_priv(dev);
1322 unsigned long flags;
1323
1324 spin_lock_irqsave(&np->lock, flags);
1325
1326 np->cur_tx_copy->skbuff = skb;
1327
1328 #define one_buffer
1329 #define BPT 1022
1330 #if defined(one_buffer)
1331 np->cur_tx_copy->buffer = pci_map_single(np->pci_dev, skb->data,
1332 skb->len, PCI_DMA_TODEVICE);
1333 np->cur_tx_copy->control = TXIC | TXLD | TXFD | CRCEnable | PADEnable;
1334 np->cur_tx_copy->control |= (skb->len << PKTSShift); /* pkt size */
1335 np->cur_tx_copy->control |= (skb->len << TBSShift); /* buffer size */
1336 // 89/12/29 add,
1337 if (np->pci_dev->device == 0x891)
1338 np->cur_tx_copy->control |= ETIControl | RetryTxLC;
1339 np->cur_tx_copy->status = TXOWN;
1340 np->cur_tx_copy = np->cur_tx_copy->next_desc_logical;
1341 --np->free_tx_count;
1342 #elif defined(two_buffer)
1343 if (skb->len > BPT) {
1344 struct fealnx_desc *next;
1345
1346 /* for the first descriptor */
1347 np->cur_tx_copy->buffer = pci_map_single(np->pci_dev, skb->data,
1348 BPT, PCI_DMA_TODEVICE);
1349 np->cur_tx_copy->control = TXIC | TXFD | CRCEnable | PADEnable;
1350 np->cur_tx_copy->control |= (skb->len << PKTSShift); /* pkt size */
1351 np->cur_tx_copy->control |= (BPT << TBSShift); /* buffer size */
1352
1353 /* for the last descriptor */
1354 next = np->cur_tx_copy->next_desc_logical;
1355 next->skbuff = skb;
1356 next->control = TXIC | TXLD | CRCEnable | PADEnable;
1357 next->control |= (skb->len << PKTSShift); /* pkt size */
1358 next->control |= ((skb->len - BPT) << TBSShift); /* buf size */
1359 // 89/12/29 add,
1360 if (np->pci_dev->device == 0x891)
1361 np->cur_tx_copy->control |= ETIControl | RetryTxLC;
1362 next->buffer = pci_map_single(ep->pci_dev, skb->data + BPT,
1363 skb->len - BPT, PCI_DMA_TODEVICE);
1364
1365 next->status = TXOWN;
1366 np->cur_tx_copy->status = TXOWN;
1367
1368 np->cur_tx_copy = next->next_desc_logical;
1369 np->free_tx_count -= 2;
1370 } else {
1371 np->cur_tx_copy->buffer = pci_map_single(np->pci_dev, skb->data,
1372 skb->len, PCI_DMA_TODEVICE);
1373 np->cur_tx_copy->control = TXIC | TXLD | TXFD | CRCEnable | PADEnable;
1374 np->cur_tx_copy->control |= (skb->len << PKTSShift); /* pkt size */
1375 np->cur_tx_copy->control |= (skb->len << TBSShift); /* buffer size */
1376 // 89/12/29 add,
1377 if (np->pci_dev->device == 0x891)
1378 np->cur_tx_copy->control |= ETIControl | RetryTxLC;
1379 np->cur_tx_copy->status = TXOWN;
1380 np->cur_tx_copy = np->cur_tx_copy->next_desc_logical;
1381 --np->free_tx_count;
1382 }
1383 #endif
1384
1385 if (np->free_tx_count < 2)
1386 netif_stop_queue(dev);
1387 ++np->really_tx_count;
1388 iowrite32(0, np->mem + TXPDR);
1389 dev->trans_start = jiffies;
1390
1391 spin_unlock_irqrestore(&np->lock, flags);
1392 return 0;
1393 }
1394
1395
1396 /* Take lock before calling */
1397 /* Chip probably hosed tx ring. Clean up. */
1398 static void reset_tx_descriptors(struct net_device *dev)
1399 {
1400 struct netdev_private *np = netdev_priv(dev);
1401 struct fealnx_desc *cur;
1402 int i;
1403
1404 /* initialize tx variables */
1405 np->cur_tx = &np->tx_ring[0];
1406 np->cur_tx_copy = &np->tx_ring[0];
1407 np->really_tx_count = 0;
1408 np->free_tx_count = TX_RING_SIZE;
1409
1410 for (i = 0; i < TX_RING_SIZE; i++) {
1411 cur = &np->tx_ring[i];
1412 if (cur->skbuff) {
1413 pci_unmap_single(np->pci_dev, cur->buffer,
1414 cur->skbuff->len, PCI_DMA_TODEVICE);
1415 dev_kfree_skb_any(cur->skbuff);
1416 cur->skbuff = NULL;
1417 }
1418 cur->status = 0;
1419 cur->control = 0; /* needed? */
1420 /* probably not needed. We do it for purely paranoid reasons */
1421 cur->next_desc = np->tx_ring_dma +
1422 (i + 1)*sizeof(struct fealnx_desc);
1423 cur->next_desc_logical = &np->tx_ring[i + 1];
1424 }
1425 /* for the last tx descriptor */
1426 np->tx_ring[TX_RING_SIZE - 1].next_desc = np->tx_ring_dma;
1427 np->tx_ring[TX_RING_SIZE - 1].next_desc_logical = &np->tx_ring[0];
1428 }
1429
1430
1431 /* Take lock and stop rx before calling this */
1432 static void reset_rx_descriptors(struct net_device *dev)
1433 {
1434 struct netdev_private *np = netdev_priv(dev);
1435 struct fealnx_desc *cur = np->cur_rx;
1436 int i;
1437
1438 allocate_rx_buffers(dev);
1439
1440 for (i = 0; i < RX_RING_SIZE; i++) {
1441 if (cur->skbuff)
1442 cur->status = RXOWN;
1443 cur = cur->next_desc_logical;
1444 }
1445
1446 iowrite32(np->rx_ring_dma + ((char*)np->cur_rx - (char*)np->rx_ring),
1447 np->mem + RXLBA);
1448 }
1449
1450
1451 /* The interrupt handler does all of the Rx thread work and cleans up
1452 after the Tx thread. */
1453 static irqreturn_t intr_handler(int irq, void *dev_instance)
1454 {
1455 struct net_device *dev = (struct net_device *) dev_instance;
1456 struct netdev_private *np = netdev_priv(dev);
1457 void __iomem *ioaddr = np->mem;
1458 long boguscnt = max_interrupt_work;
1459 unsigned int num_tx = 0;
1460 int handled = 0;
1461
1462 spin_lock(&np->lock);
1463
1464 iowrite32(0, ioaddr + IMR);
1465
1466 do {
1467 u32 intr_status = ioread32(ioaddr + ISR);
1468
1469 /* Acknowledge all of the current interrupt sources ASAP. */
1470 iowrite32(intr_status, ioaddr + ISR);
1471
1472 if (debug)
1473 printk(KERN_DEBUG "%s: Interrupt, status %4.4x.\n", dev->name,
1474 intr_status);
1475
1476 if (!(intr_status & np->imrvalue))
1477 break;
1478
1479 handled = 1;
1480
1481 // 90/1/16 delete,
1482 //
1483 // if (intr_status & FBE)
1484 // { /* fatal error */
1485 // stop_nic_tx(ioaddr, 0);
1486 // stop_nic_rx(ioaddr, 0);
1487 // break;
1488 // };
1489
1490 if (intr_status & TUNF)
1491 iowrite32(0, ioaddr + TXPDR);
1492
1493 if (intr_status & CNTOVF) {
1494 /* missed pkts */
1495 np->stats.rx_missed_errors += ioread32(ioaddr + TALLY) & 0x7fff;
1496
1497 /* crc error */
1498 np->stats.rx_crc_errors +=
1499 (ioread32(ioaddr + TALLY) & 0x7fff0000) >> 16;
1500 }
1501
1502 if (intr_status & (RI | RBU)) {
1503 if (intr_status & RI)
1504 netdev_rx(dev);
1505 else {
1506 stop_nic_rx(ioaddr, np->crvalue);
1507 reset_rx_descriptors(dev);
1508 iowrite32(np->crvalue, ioaddr + TCRRCR);
1509 }
1510 }
1511
1512 while (np->really_tx_count) {
1513 long tx_status = np->cur_tx->status;
1514 long tx_control = np->cur_tx->control;
1515
1516 if (!(tx_control & TXLD)) { /* this pkt is combined by two tx descriptors */
1517 struct fealnx_desc *next;
1518
1519 next = np->cur_tx->next_desc_logical;
1520 tx_status = next->status;
1521 tx_control = next->control;
1522 }
1523
1524 if (tx_status & TXOWN)
1525 break;
1526
1527 if (!(np->crvalue & CR_W_ENH)) {
1528 if (tx_status & (CSL | LC | EC | UDF | HF)) {
1529 np->stats.tx_errors++;
1530 if (tx_status & EC)
1531 np->stats.tx_aborted_errors++;
1532 if (tx_status & CSL)
1533 np->stats.tx_carrier_errors++;
1534 if (tx_status & LC)
1535 np->stats.tx_window_errors++;
1536 if (tx_status & UDF)
1537 np->stats.tx_fifo_errors++;
1538 if ((tx_status & HF) && np->mii.full_duplex == 0)
1539 np->stats.tx_heartbeat_errors++;
1540
1541 } else {
1542 np->stats.tx_bytes +=
1543 ((tx_control & PKTSMask) >> PKTSShift);
1544
1545 np->stats.collisions +=
1546 ((tx_status & NCRMask) >> NCRShift);
1547 np->stats.tx_packets++;
1548 }
1549 } else {
1550 np->stats.tx_bytes +=
1551 ((tx_control & PKTSMask) >> PKTSShift);
1552 np->stats.tx_packets++;
1553 }
1554
1555 /* Free the original skb. */
1556 pci_unmap_single(np->pci_dev, np->cur_tx->buffer,
1557 np->cur_tx->skbuff->len, PCI_DMA_TODEVICE);
1558 dev_kfree_skb_irq(np->cur_tx->skbuff);
1559 np->cur_tx->skbuff = NULL;
1560 --np->really_tx_count;
1561 if (np->cur_tx->control & TXLD) {
1562 np->cur_tx = np->cur_tx->next_desc_logical;
1563 ++np->free_tx_count;
1564 } else {
1565 np->cur_tx = np->cur_tx->next_desc_logical;
1566 np->cur_tx = np->cur_tx->next_desc_logical;
1567 np->free_tx_count += 2;
1568 }
1569 num_tx++;
1570 } /* end of for loop */
1571
1572 if (num_tx && np->free_tx_count >= 2)
1573 netif_wake_queue(dev);
1574
1575 /* read transmit status for enhanced mode only */
1576 if (np->crvalue & CR_W_ENH) {
1577 long data;
1578
1579 data = ioread32(ioaddr + TSR);
1580 np->stats.tx_errors += (data & 0xff000000) >> 24;
1581 np->stats.tx_aborted_errors += (data & 0xff000000) >> 24;
1582 np->stats.tx_window_errors += (data & 0x00ff0000) >> 16;
1583 np->stats.collisions += (data & 0x0000ffff);
1584 }
1585
1586 if (--boguscnt < 0) {
1587 printk(KERN_WARNING "%s: Too much work at interrupt, "
1588 "status=0x%4.4x.\n", dev->name, intr_status);
1589 if (!np->reset_timer_armed) {
1590 np->reset_timer_armed = 1;
1591 np->reset_timer.expires = RUN_AT(HZ/2);
1592 add_timer(&np->reset_timer);
1593 stop_nic_rxtx(ioaddr, 0);
1594 netif_stop_queue(dev);
1595 /* or netif_tx_disable(dev); ?? */
1596 /* Prevent other paths from enabling tx,rx,intrs */
1597 np->crvalue_sv = np->crvalue;
1598 np->imrvalue_sv = np->imrvalue;
1599 np->crvalue &= ~(CR_W_TXEN | CR_W_RXEN); /* or simply = 0? */
1600 np->imrvalue = 0;
1601 }
1602
1603 break;
1604 }
1605 } while (1);
1606
1607 /* read the tally counters */
1608 /* missed pkts */
1609 np->stats.rx_missed_errors += ioread32(ioaddr + TALLY) & 0x7fff;
1610
1611 /* crc error */
1612 np->stats.rx_crc_errors += (ioread32(ioaddr + TALLY) & 0x7fff0000) >> 16;
1613
1614 if (debug)
1615 printk(KERN_DEBUG "%s: exiting interrupt, status=%#4.4x.\n",
1616 dev->name, ioread32(ioaddr + ISR));
1617
1618 iowrite32(np->imrvalue, ioaddr + IMR);
1619
1620 spin_unlock(&np->lock);
1621
1622 return IRQ_RETVAL(handled);
1623 }
1624
1625
1626 /* This routine is logically part of the interrupt handler, but separated
1627 for clarity and better register allocation. */
1628 static int netdev_rx(struct net_device *dev)
1629 {
1630 struct netdev_private *np = netdev_priv(dev);
1631 void __iomem *ioaddr = np->mem;
1632
1633 /* If EOP is set on the next entry, it's a new packet. Send it up. */
1634 while (!(np->cur_rx->status & RXOWN) && np->cur_rx->skbuff) {
1635 s32 rx_status = np->cur_rx->status;
1636
1637 if (np->really_rx_count == 0)
1638 break;
1639
1640 if (debug)
1641 printk(KERN_DEBUG " netdev_rx() status was %8.8x.\n", rx_status);
1642
1643 if ((!((rx_status & RXFSD) && (rx_status & RXLSD)))
1644 || (rx_status & ErrorSummary)) {
1645 if (rx_status & ErrorSummary) { /* there was a fatal error */
1646 if (debug)
1647 printk(KERN_DEBUG
1648 "%s: Receive error, Rx status %8.8x.\n",
1649 dev->name, rx_status);
1650
1651 np->stats.rx_errors++; /* end of a packet. */
1652 if (rx_status & (LONG | RUNT))
1653 np->stats.rx_length_errors++;
1654 if (rx_status & RXER)
1655 np->stats.rx_frame_errors++;
1656 if (rx_status & CRC)
1657 np->stats.rx_crc_errors++;
1658 } else {
1659 int need_to_reset = 0;
1660 int desno = 0;
1661
1662 if (rx_status & RXFSD) { /* this pkt is too long, over one rx buffer */
1663 struct fealnx_desc *cur;
1664
1665 /* check this packet is received completely? */
1666 cur = np->cur_rx;
1667 while (desno <= np->really_rx_count) {
1668 ++desno;
1669 if ((!(cur->status & RXOWN))
1670 && (cur->status & RXLSD))
1671 break;
1672 /* goto next rx descriptor */
1673 cur = cur->next_desc_logical;
1674 }
1675 if (desno > np->really_rx_count)
1676 need_to_reset = 1;
1677 } else /* RXLSD did not find, something error */
1678 need_to_reset = 1;
1679
1680 if (need_to_reset == 0) {
1681 int i;
1682
1683 np->stats.rx_length_errors++;
1684
1685 /* free all rx descriptors related this long pkt */
1686 for (i = 0; i < desno; ++i) {
1687 if (!np->cur_rx->skbuff) {
1688 printk(KERN_DEBUG
1689 "%s: I'm scared\n", dev->name);
1690 break;
1691 }
1692 np->cur_rx->status = RXOWN;
1693 np->cur_rx = np->cur_rx->next_desc_logical;
1694 }
1695 continue;
1696 } else { /* rx error, need to reset this chip */
1697 stop_nic_rx(ioaddr, np->crvalue);
1698 reset_rx_descriptors(dev);
1699 iowrite32(np->crvalue, ioaddr + TCRRCR);
1700 }
1701 break; /* exit the while loop */
1702 }
1703 } else { /* this received pkt is ok */
1704
1705 struct sk_buff *skb;
1706 /* Omit the four octet CRC from the length. */
1707 short pkt_len = ((rx_status & FLNGMASK) >> FLNGShift) - 4;
1708
1709 #ifndef final_version
1710 if (debug)
1711 printk(KERN_DEBUG " netdev_rx() normal Rx pkt length %d"
1712 " status %x.\n", pkt_len, rx_status);
1713 #endif
1714
1715 /* Check if the packet is long enough to accept without copying
1716 to a minimally-sized skbuff. */
1717 if (pkt_len < rx_copybreak &&
1718 (skb = dev_alloc_skb(pkt_len + 2)) != NULL) {
1719 skb_reserve(skb, 2); /* 16 byte align the IP header */
1720 pci_dma_sync_single_for_cpu(np->pci_dev,
1721 np->cur_rx->buffer,
1722 np->rx_buf_sz,
1723 PCI_DMA_FROMDEVICE);
1724 /* Call copy + cksum if available. */
1725
1726 #if ! defined(__alpha__)
1727 skb_copy_to_linear_data(skb,
1728 np->cur_rx->skbuff->data, pkt_len);
1729 skb_put(skb, pkt_len);
1730 #else
1731 memcpy(skb_put(skb, pkt_len),
1732 np->cur_rx->skbuff->data, pkt_len);
1733 #endif
1734 pci_dma_sync_single_for_device(np->pci_dev,
1735 np->cur_rx->buffer,
1736 np->rx_buf_sz,
1737 PCI_DMA_FROMDEVICE);
1738 } else {
1739 pci_unmap_single(np->pci_dev,
1740 np->cur_rx->buffer,
1741 np->rx_buf_sz,
1742 PCI_DMA_FROMDEVICE);
1743 skb_put(skb = np->cur_rx->skbuff, pkt_len);
1744 np->cur_rx->skbuff = NULL;
1745 --np->really_rx_count;
1746 }
1747 skb->protocol = eth_type_trans(skb, dev);
1748 netif_rx(skb);
1749 dev->last_rx = jiffies;
1750 np->stats.rx_packets++;
1751 np->stats.rx_bytes += pkt_len;
1752 }
1753
1754 np->cur_rx = np->cur_rx->next_desc_logical;
1755 } /* end of while loop */
1756
1757 /* allocate skb for rx buffers */
1758 allocate_rx_buffers(dev);
1759
1760 return 0;
1761 }
1762
1763
1764 static struct net_device_stats *get_stats(struct net_device *dev)
1765 {
1766 struct netdev_private *np = netdev_priv(dev);
1767 void __iomem *ioaddr = np->mem;
1768
1769 /* The chip only need report frame silently dropped. */
1770 if (netif_running(dev)) {
1771 np->stats.rx_missed_errors += ioread32(ioaddr + TALLY) & 0x7fff;
1772 np->stats.rx_crc_errors += (ioread32(ioaddr + TALLY) & 0x7fff0000) >> 16;
1773 }
1774
1775 return &np->stats;
1776 }
1777
1778
1779 /* for dev->set_multicast_list */
1780 static void set_rx_mode(struct net_device *dev)
1781 {
1782 spinlock_t *lp = &((struct netdev_private *)netdev_priv(dev))->lock;
1783 unsigned long flags;
1784 spin_lock_irqsave(lp, flags);
1785 __set_rx_mode(dev);
1786 spin_unlock_irqrestore(lp, flags);
1787 }
1788
1789
1790 /* Take lock before calling */
1791 static void __set_rx_mode(struct net_device *dev)
1792 {
1793 struct netdev_private *np = netdev_priv(dev);
1794 void __iomem *ioaddr = np->mem;
1795 u32 mc_filter[2]; /* Multicast hash filter */
1796 u32 rx_mode;
1797
1798 if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
1799 memset(mc_filter, 0xff, sizeof(mc_filter));
1800 rx_mode = CR_W_PROM | CR_W_AB | CR_W_AM;
1801 } else if ((dev->mc_count > multicast_filter_limit)
1802 || (dev->flags & IFF_ALLMULTI)) {
1803 /* Too many to match, or accept all multicasts. */
1804 memset(mc_filter, 0xff, sizeof(mc_filter));
1805 rx_mode = CR_W_AB | CR_W_AM;
1806 } else {
1807 struct dev_mc_list *mclist;
1808 int i;
1809
1810 memset(mc_filter, 0, sizeof(mc_filter));
1811 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
1812 i++, mclist = mclist->next) {
1813 unsigned int bit;
1814 bit = (ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26) ^ 0x3F;
1815 mc_filter[bit >> 5] |= (1 << bit);
1816 }
1817 rx_mode = CR_W_AB | CR_W_AM;
1818 }
1819
1820 stop_nic_rxtx(ioaddr, np->crvalue);
1821
1822 iowrite32(mc_filter[0], ioaddr + MAR0);
1823 iowrite32(mc_filter[1], ioaddr + MAR1);
1824 np->crvalue &= ~CR_W_RXMODEMASK;
1825 np->crvalue |= rx_mode;
1826 iowrite32(np->crvalue, ioaddr + TCRRCR);
1827 }
1828
1829 static void netdev_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1830 {
1831 struct netdev_private *np = netdev_priv(dev);
1832
1833 strcpy(info->driver, DRV_NAME);
1834 strcpy(info->version, DRV_VERSION);
1835 strcpy(info->bus_info, pci_name(np->pci_dev));
1836 }
1837
1838 static int netdev_get_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_gset(&np->mii, cmd);
1845 spin_unlock_irq(&np->lock);
1846
1847 return rc;
1848 }
1849
1850 static int netdev_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1851 {
1852 struct netdev_private *np = netdev_priv(dev);
1853 int rc;
1854
1855 spin_lock_irq(&np->lock);
1856 rc = mii_ethtool_sset(&np->mii, cmd);
1857 spin_unlock_irq(&np->lock);
1858
1859 return rc;
1860 }
1861
1862 static int netdev_nway_reset(struct net_device *dev)
1863 {
1864 struct netdev_private *np = netdev_priv(dev);
1865 return mii_nway_restart(&np->mii);
1866 }
1867
1868 static u32 netdev_get_link(struct net_device *dev)
1869 {
1870 struct netdev_private *np = netdev_priv(dev);
1871 return mii_link_ok(&np->mii);
1872 }
1873
1874 static u32 netdev_get_msglevel(struct net_device *dev)
1875 {
1876 return debug;
1877 }
1878
1879 static void netdev_set_msglevel(struct net_device *dev, u32 value)
1880 {
1881 debug = value;
1882 }
1883
1884 static const struct ethtool_ops netdev_ethtool_ops = {
1885 .get_drvinfo = netdev_get_drvinfo,
1886 .get_settings = netdev_get_settings,
1887 .set_settings = netdev_set_settings,
1888 .nway_reset = netdev_nway_reset,
1889 .get_link = netdev_get_link,
1890 .get_msglevel = netdev_get_msglevel,
1891 .set_msglevel = netdev_set_msglevel,
1892 };
1893
1894 static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1895 {
1896 struct netdev_private *np = netdev_priv(dev);
1897 int rc;
1898
1899 if (!netif_running(dev))
1900 return -EINVAL;
1901
1902 spin_lock_irq(&np->lock);
1903 rc = generic_mii_ioctl(&np->mii, if_mii(rq), cmd, NULL);
1904 spin_unlock_irq(&np->lock);
1905
1906 return rc;
1907 }
1908
1909
1910 static int netdev_close(struct net_device *dev)
1911 {
1912 struct netdev_private *np = netdev_priv(dev);
1913 void __iomem *ioaddr = np->mem;
1914 int i;
1915
1916 netif_stop_queue(dev);
1917
1918 /* Disable interrupts by clearing the interrupt mask. */
1919 iowrite32(0x0000, ioaddr + IMR);
1920
1921 /* Stop the chip's Tx and Rx processes. */
1922 stop_nic_rxtx(ioaddr, 0);
1923
1924 del_timer_sync(&np->timer);
1925 del_timer_sync(&np->reset_timer);
1926
1927 free_irq(dev->irq, dev);
1928
1929 /* Free all the skbuffs in the Rx queue. */
1930 for (i = 0; i < RX_RING_SIZE; i++) {
1931 struct sk_buff *skb = np->rx_ring[i].skbuff;
1932
1933 np->rx_ring[i].status = 0;
1934 if (skb) {
1935 pci_unmap_single(np->pci_dev, np->rx_ring[i].buffer,
1936 np->rx_buf_sz, PCI_DMA_FROMDEVICE);
1937 dev_kfree_skb(skb);
1938 np->rx_ring[i].skbuff = NULL;
1939 }
1940 }
1941
1942 for (i = 0; i < TX_RING_SIZE; i++) {
1943 struct sk_buff *skb = np->tx_ring[i].skbuff;
1944
1945 if (skb) {
1946 pci_unmap_single(np->pci_dev, np->tx_ring[i].buffer,
1947 skb->len, PCI_DMA_TODEVICE);
1948 dev_kfree_skb(skb);
1949 np->tx_ring[i].skbuff = NULL;
1950 }
1951 }
1952
1953 return 0;
1954 }
1955
1956 static struct pci_device_id fealnx_pci_tbl[] = {
1957 {0x1516, 0x0800, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1958 {0x1516, 0x0803, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1},
1959 {0x1516, 0x0891, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2},
1960 {} /* terminate list */
1961 };
1962 MODULE_DEVICE_TABLE(pci, fealnx_pci_tbl);
1963
1964
1965 static struct pci_driver fealnx_driver = {
1966 .name = "fealnx",
1967 .id_table = fealnx_pci_tbl,
1968 .probe = fealnx_init_one,
1969 .remove = __devexit_p(fealnx_remove_one),
1970 };
1971
1972 static int __init fealnx_init(void)
1973 {
1974 /* when a module, this is printed whether or not devices are found in probe */
1975 #ifdef MODULE
1976 printk(version);
1977 #endif
1978
1979 return pci_register_driver(&fealnx_driver);
1980 }
1981
1982 static void __exit fealnx_exit(void)
1983 {
1984 pci_unregister_driver(&fealnx_driver);
1985 }
1986
1987 module_init(fealnx_init);
1988 module_exit(fealnx_exit);
Support for the Chinese Samsung S3C2440 based development boards