1 /* drivers/net/ax88796.c
2 *
3 * Copyright 2005,2007 Simtec Electronics
4 * Ben Dooks <ben@simtec.co.uk>
5 *
6 * Asix AX88796 10/100 Ethernet controller support
7 * Based on ne.c, by Donald Becker, et-al.
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13
14 #include <linux/module.h>
15 #include <linux/kernel.h>
16 #include <linux/errno.h>
17 #include <linux/isapnp.h>
18 #include <linux/init.h>
19 #include <linux/interrupt.h>
20 #include <linux/platform_device.h>
21 #include <linux/delay.h>
22 #include <linux/timer.h>
23 #include <linux/netdevice.h>
24 #include <linux/etherdevice.h>
25 #include <linux/ethtool.h>
26 #include <linux/mii.h>
27 #include <linux/eeprom_93cx6.h>
28
29 #include <net/ax88796.h>
30
31 #include <asm/system.h>
32 #include <asm/io.h>
33
34 static int phy_debug = 0;
35
36 /* Rename the lib8390.c functions to show that they are in this driver */
37 #define __ei_open ax_ei_open
38 #define __ei_close ax_ei_close
39 #define __ei_poll ax_ei_poll
40 #define __ei_start_xmit ax_ei_start_xmit
41 #define __ei_tx_timeout ax_ei_tx_timeout
42 #define __ei_get_stats ax_ei_get_stats
43 #define __ei_set_multicast_list ax_ei_set_multicast_list
44 #define __ei_interrupt ax_ei_interrupt
45 #define ____alloc_ei_netdev ax__alloc_ei_netdev
46 #define __NS8390_init ax_NS8390_init
47
48 /* force unsigned long back to 'void __iomem *' */
49 #define ax_convert_addr(_a) ((void __force __iomem *)(_a))
50
51 #define ei_inb(_a) readb(ax_convert_addr(_a))
52 #define ei_outb(_v, _a) writeb(_v, ax_convert_addr(_a))
53
54 #define ei_inb_p(_a) ei_inb(_a)
55 #define ei_outb_p(_v, _a) ei_outb(_v, _a)
56
57 /* define EI_SHIFT() to take into account our register offsets */
58 #define EI_SHIFT(x) (ei_local->reg_offset[(x)])
59
60 /* Ensure we have our RCR base value */
61 #define AX88796_PLATFORM
62
63 static unsigned char version[] = "ax88796.c: Copyright 2005,2007 Simtec Electronics\n";
64
65 #include "lib8390.c"
66
67 #define DRV_NAME "ax88796"
68 #define DRV_VERSION "1.00"
69
70 /* from ne.c */
71 #define NE_CMD EI_SHIFT(0x00)
72 #define NE_RESET EI_SHIFT(0x1f)
73 #define NE_DATAPORT EI_SHIFT(0x10)
74
75 #define NE1SM_START_PG 0x20 /* First page of TX buffer */
76 #define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
77 #define NESM_START_PG 0x40 /* First page of TX buffer */
78 #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
79
80 /* device private data */
81
82 struct ax_device {
83 struct timer_list mii_timer;
84 spinlock_t mii_lock;
85 struct mii_if_info mii;
86
87 u32 msg_enable;
88 void __iomem *map2;
89 struct platform_device *dev;
90 struct resource *mem;
91 struct resource *mem2;
92 struct ax_plat_data *plat;
93
94 unsigned char running;
95 unsigned char resume_open;
96 unsigned int irqflags;
97
98 u32 reg_offsets[0x20];
99 };
100
101 static inline struct ax_device *to_ax_dev(struct net_device *dev)
102 {
103 struct ei_device *ei_local = netdev_priv(dev);
104 return (struct ax_device *)(ei_local+1);
105 }
106
107 /* ax_initial_check
108 *
109 * do an initial probe for the card to check wether it exists
110 * and is functional
111 */
112
113 static int ax_initial_check(struct net_device *dev)
114 {
115 struct ei_device *ei_local = netdev_priv(dev);
116 void __iomem *ioaddr = ei_local->mem;
117 int reg0;
118 int regd;
119
120 reg0 = ei_inb(ioaddr);
121 if (reg0 == 0xFF)
122 return -ENODEV;
123
124 ei_outb(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
125 regd = ei_inb(ioaddr + 0x0d);
126 ei_outb(0xff, ioaddr + 0x0d);
127 ei_outb(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
128 ei_inb(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
129 if (ei_inb(ioaddr + EN0_COUNTER0) != 0) {
130 ei_outb(reg0, ioaddr);
131 ei_outb(regd, ioaddr + 0x0d); /* Restore the old values. */
132 return -ENODEV;
133 }
134
135 return 0;
136 }
137
138 /* Hard reset the card. This used to pause for the same period that a
139 8390 reset command required, but that shouldn't be necessary. */
140
141 static void ax_reset_8390(struct net_device *dev)
142 {
143 struct ei_device *ei_local = netdev_priv(dev);
144 struct ax_device *ax = to_ax_dev(dev);
145 unsigned long reset_start_time = jiffies;
146 void __iomem *addr = (void __iomem *)dev->base_addr;
147
148 if (ei_debug > 1)
149 dev_dbg(&ax->dev->dev, "resetting the 8390 t=%ld\n", jiffies);
150
151 ei_outb(ei_inb(addr + NE_RESET), addr + NE_RESET);
152
153 ei_status.txing = 0;
154 ei_status.dmaing = 0;
155
156 /* This check _should_not_ be necessary, omit eventually. */
157 while ((ei_inb(addr + EN0_ISR) & ENISR_RESET) == 0) {
158 if (jiffies - reset_start_time > 2*HZ/100) {
159 dev_warn(&ax->dev->dev, "%s: %s did not complete.\n",
160 __func__, dev->name);
161 break;
162 }
163 }
164
165 ei_outb(ENISR_RESET, addr + EN0_ISR); /* Ack intr. */
166 }
167
168
169 static void ax_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
170 int ring_page)
171 {
172 struct ei_device *ei_local = netdev_priv(dev);
173 struct ax_device *ax = to_ax_dev(dev);
174 void __iomem *nic_base = ei_local->mem;
175
176 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
177 if (ei_status.dmaing) {
178 dev_err(&ax->dev->dev, "%s: DMAing conflict in %s "
179 "[DMAstat:%d][irqlock:%d].\n",
180 dev->name, __func__,
181 ei_status.dmaing, ei_status.irqlock);
182 return;
183 }
184
185 ei_status.dmaing |= 0x01;
186 ei_outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
187 ei_outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
188 ei_outb(0, nic_base + EN0_RCNTHI);
189 ei_outb(0, nic_base + EN0_RSARLO); /* On page boundary */
190 ei_outb(ring_page, nic_base + EN0_RSARHI);
191 ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
192
193 if (ei_status.word16)
194 readsw(nic_base + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
195 else
196 readsb(nic_base + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));
197
198 ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
199 ei_status.dmaing &= ~0x01;
200
201 le16_to_cpus(&hdr->count);
202 }
203
204
205 /* Block input and output, similar to the Crynwr packet driver. If you
206 are porting to a new ethercard, look at the packet driver source for hints.
207 The NEx000 doesn't share the on-board packet memory -- you have to put
208 the packet out through the "remote DMA" dataport using ei_outb. */
209
210 static void ax_block_input(struct net_device *dev, int count,
211 struct sk_buff *skb, int ring_offset)
212 {
213 struct ei_device *ei_local = netdev_priv(dev);
214 struct ax_device *ax = to_ax_dev(dev);
215 void __iomem *nic_base = ei_local->mem;
216 char *buf = skb->data;
217
218 if (ei_status.dmaing) {
219 dev_err(&ax->dev->dev,
220 "%s: DMAing conflict in %s "
221 "[DMAstat:%d][irqlock:%d].\n",
222 dev->name, __func__,
223 ei_status.dmaing, ei_status.irqlock);
224 return;
225 }
226
227 ei_status.dmaing |= 0x01;
228
229 ei_outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
230 ei_outb(count & 0xff, nic_base + EN0_RCNTLO);
231 ei_outb(count >> 8, nic_base + EN0_RCNTHI);
232 ei_outb(ring_offset & 0xff, nic_base + EN0_RSARLO);
233 ei_outb(ring_offset >> 8, nic_base + EN0_RSARHI);
234 ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
235
236 if (ei_status.word16) {
237 readsw(nic_base + NE_DATAPORT, buf, count >> 1);
238 if (count & 0x01)
239 buf[count-1] = ei_inb(nic_base + NE_DATAPORT);
240
241 } else {
242 readsb(nic_base + NE_DATAPORT, buf, count);
243 }
244
245 ei_status.dmaing &= ~1;
246 }
247
248 static void ax_block_output(struct net_device *dev, int count,
249 const unsigned char *buf, const int start_page)
250 {
251 struct ei_device *ei_local = netdev_priv(dev);
252 struct ax_device *ax = to_ax_dev(dev);
253 void __iomem *nic_base = ei_local->mem;
254 unsigned long dma_start;
255
256 /* Round the count up for word writes. Do we need to do this?
257 What effect will an odd byte count have on the 8390?
258 I should check someday. */
259
260 if (ei_status.word16 && (count & 0x01))
261 count++;
262
263 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
264 if (ei_status.dmaing) {
265 dev_err(&ax->dev->dev, "%s: DMAing conflict in %s."
266 "[DMAstat:%d][irqlock:%d]\n",
267 dev->name, __func__,
268 ei_status.dmaing, ei_status.irqlock);
269 return;
270 }
271
272 ei_status.dmaing |= 0x01;
273 /* We should already be in page 0, but to be safe... */
274 ei_outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
275
276 ei_outb(ENISR_RDC, nic_base + EN0_ISR);
277
278 /* Now the normal output. */
279 ei_outb(count & 0xff, nic_base + EN0_RCNTLO);
280 ei_outb(count >> 8, nic_base + EN0_RCNTHI);
281 ei_outb(0x00, nic_base + EN0_RSARLO);
282 ei_outb(start_page, nic_base + EN0_RSARHI);
283
284 ei_outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
285 if (ei_status.word16) {
286 writesw(nic_base + NE_DATAPORT, buf, count>>1);
287 } else {
288 writesb(nic_base + NE_DATAPORT, buf, count);
289 }
290
291 dma_start = jiffies;
292
293 while ((ei_inb(nic_base + EN0_ISR) & ENISR_RDC) == 0) {
294 if (jiffies - dma_start > 2*HZ/100) { /* 20ms */
295 dev_warn(&ax->dev->dev,
296 "%s: timeout waiting for Tx RDC.\n", dev->name);
297 ax_reset_8390(dev);
298 ax_NS8390_init(dev,1);
299 break;
300 }
301 }
302
303 ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
304 ei_status.dmaing &= ~0x01;
305 return;
306 }
307
308 /* definitions for accessing MII/EEPROM interface */
309
310 #define AX_MEMR EI_SHIFT(0x14)
311 #define AX_MEMR_MDC (1<<0)
312 #define AX_MEMR_MDIR (1<<1)
313 #define AX_MEMR_MDI (1<<2)
314 #define AX_MEMR_MDO (1<<3)
315 #define AX_MEMR_EECS (1<<4)
316 #define AX_MEMR_EEI (1<<5)
317 #define AX_MEMR_EEO (1<<6)
318 #define AX_MEMR_EECLK (1<<7)
319
320 /* ax_mii_ei_outbits
321 *
322 * write the specified set of bits to the phy
323 */
324
325 static void
326 ax_mii_ei_outbits(struct net_device *dev, unsigned int bits, int len)
327 {
328 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
329 void __iomem *memr_addr = (void __iomem *)dev->base_addr + AX_MEMR;
330 unsigned int memr;
331
332 /* clock low, data to output mode */
333 memr = ei_inb(memr_addr);
334 memr &= ~(AX_MEMR_MDC | AX_MEMR_MDIR);
335 ei_outb(memr, memr_addr);
336
337 for (len--; len >= 0; len--) {
338 if (bits & (1 << len))
339 memr |= AX_MEMR_MDO;
340 else
341 memr &= ~AX_MEMR_MDO;
342
343 ei_outb(memr, memr_addr);
344
345 /* clock high */
346
347 ei_outb(memr | AX_MEMR_MDC, memr_addr);
348 udelay(1);
349
350 /* clock low */
351 ei_outb(memr, memr_addr);
352 }
353
354 /* leaves the clock line low, mdir input */
355 memr |= AX_MEMR_MDIR;
356 ei_outb(memr, (void __iomem *)dev->base_addr + AX_MEMR);
357 }
358
359 /* ax_phy_ei_inbits
360 *
361 * read a specified number of bits from the phy
362 */
363
364 static unsigned int
365 ax_phy_ei_inbits(struct net_device *dev, int no)
366 {
367 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
368 void __iomem *memr_addr = (void __iomem *)dev->base_addr + AX_MEMR;
369 unsigned int memr;
370 unsigned int result = 0;
371
372 /* clock low, data to input mode */
373 memr = ei_inb(memr_addr);
374 memr &= ~AX_MEMR_MDC;
375 memr |= AX_MEMR_MDIR;
376 ei_outb(memr, memr_addr);
377
378 for (no--; no >= 0; no--) {
379 ei_outb(memr | AX_MEMR_MDC, memr_addr);
380
381 udelay(1);
382
383 if (ei_inb(memr_addr) & AX_MEMR_MDI)
384 result |= (1<<no);
385
386 ei_outb(memr, memr_addr);
387 }
388
389 return result;
390 }
391
392 /* ax_phy_issueaddr
393 *
394 * use the low level bit shifting routines to send the address
395 * and command to the specified phy
396 */
397
398 static void
399 ax_phy_issueaddr(struct net_device *dev, int phy_addr, int reg, int opc)
400 {
401 if (phy_debug)
402 pr_debug("%s: dev %p, %04x, %04x, %d\n",
403 __func__, dev, phy_addr, reg, opc);
404
405 ax_mii_ei_outbits(dev, 0x3f, 6); /* pre-amble */
406 ax_mii_ei_outbits(dev, 1, 2); /* frame-start */
407 ax_mii_ei_outbits(dev, opc, 2); /* op code */
408 ax_mii_ei_outbits(dev, phy_addr, 5); /* phy address */
409 ax_mii_ei_outbits(dev, reg, 5); /* reg address */
410 }
411
412 static int
413 ax_phy_read(struct net_device *dev, int phy_addr, int reg)
414 {
415 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
416 unsigned long flags;
417 unsigned int result;
418
419 spin_lock_irqsave(&ei_local->page_lock, flags);
420
421 ax_phy_issueaddr(dev, phy_addr, reg, 2);
422
423 result = ax_phy_ei_inbits(dev, 17);
424 result &= ~(3<<16);
425
426 spin_unlock_irqrestore(&ei_local->page_lock, flags);
427
428 if (phy_debug)
429 pr_debug("%s: %04x.%04x => read %04x\n", __func__,
430 phy_addr, reg, result);
431
432 return result;
433 }
434
435 static void
436 ax_phy_write(struct net_device *dev, int phy_addr, int reg, int value)
437 {
438 struct ei_device *ei = (struct ei_device *) netdev_priv(dev);
439 struct ax_device *ax = to_ax_dev(dev);
440 unsigned long flags;
441
442 dev_dbg(&ax->dev->dev, "%s: %p, %04x, %04x %04x\n",
443 __func__, dev, phy_addr, reg, value);
444
445 spin_lock_irqsave(&ei->page_lock, flags);
446
447 ax_phy_issueaddr(dev, phy_addr, reg, 1);
448 ax_mii_ei_outbits(dev, 2, 2); /* send TA */
449 ax_mii_ei_outbits(dev, value, 16);
450
451 spin_unlock_irqrestore(&ei->page_lock, flags);
452 }
453
454 static void ax_mii_expiry(unsigned long data)
455 {
456 struct net_device *dev = (struct net_device *)data;
457 struct ax_device *ax = to_ax_dev(dev);
458 unsigned long flags;
459
460 spin_lock_irqsave(&ax->mii_lock, flags);
461 mii_check_media(&ax->mii, netif_msg_link(ax), 0);
462 spin_unlock_irqrestore(&ax->mii_lock, flags);
463
464 if (ax->running) {
465 ax->mii_timer.expires = jiffies + HZ*2;
466 add_timer(&ax->mii_timer);
467 }
468 }
469
470 static int ax_open(struct net_device *dev)
471 {
472 struct ax_device *ax = to_ax_dev(dev);
473 struct ei_device *ei_local = netdev_priv(dev);
474 int ret;
475
476 dev_dbg(&ax->dev->dev, "%s: open\n", dev->name);
477
478 ret = request_irq(dev->irq, ax_ei_interrupt, ax->irqflags,
479 dev->name, dev);
480 if (ret)
481 return ret;
482
483 ret = ax_ei_open(dev);
484 if (ret)
485 return ret;
486
487 /* turn the phy on (if turned off) */
488
489 ei_outb(ax->plat->gpoc_val, ei_local->mem + EI_SHIFT(0x17));
490 ax->running = 1;
491
492 /* start the MII timer */
493
494 init_timer(&ax->mii_timer);
495
496 ax->mii_timer.expires = jiffies+1;
497 ax->mii_timer.data = (unsigned long) dev;
498 ax->mii_timer.function = ax_mii_expiry;
499
500 add_timer(&ax->mii_timer);
501
502 return 0;
503 }
504
505 static int ax_close(struct net_device *dev)
506 {
507 struct ax_device *ax = to_ax_dev(dev);
508 struct ei_device *ei_local = netdev_priv(dev);
509
510 dev_dbg(&ax->dev->dev, "%s: close\n", dev->name);
511
512 /* turn the phy off */
513
514 ei_outb(ax->plat->gpoc_val | (1<<6),
515 ei_local->mem + EI_SHIFT(0x17));
516
517 ax->running = 0;
518 wmb();
519
520 del_timer_sync(&ax->mii_timer);
521 ax_ei_close(dev);
522
523 free_irq(dev->irq, dev);
524 return 0;
525 }
526
527 static int ax_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
528 {
529 struct ax_device *ax = to_ax_dev(dev);
530 unsigned long flags;
531 int rc;
532
533 if (!netif_running(dev))
534 return -EINVAL;
535
536 spin_lock_irqsave(&ax->mii_lock, flags);
537 rc = generic_mii_ioctl(&ax->mii, if_mii(req), cmd, NULL);
538 spin_unlock_irqrestore(&ax->mii_lock, flags);
539
540 return rc;
541 }
542
543 /* ethtool ops */
544
545 static void ax_get_drvinfo(struct net_device *dev,
546 struct ethtool_drvinfo *info)
547 {
548 struct ax_device *ax = to_ax_dev(dev);
549
550 strcpy(info->driver, DRV_NAME);
551 strcpy(info->version, DRV_VERSION);
552 strcpy(info->bus_info, ax->dev->name);
553 }
554
555 static int ax_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
556 {
557 struct ax_device *ax = to_ax_dev(dev);
558 unsigned long flags;
559
560 spin_lock_irqsave(&ax->mii_lock, flags);
561 mii_ethtool_gset(&ax->mii, cmd);
562 spin_unlock_irqrestore(&ax->mii_lock, flags);
563
564 return 0;
565 }
566
567 static int ax_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
568 {
569 struct ax_device *ax = to_ax_dev(dev);
570 unsigned long flags;
571 int rc;
572
573 spin_lock_irqsave(&ax->mii_lock, flags);
574 rc = mii_ethtool_sset(&ax->mii, cmd);
575 spin_unlock_irqrestore(&ax->mii_lock, flags);
576
577 return rc;
578 }
579
580 static int ax_nway_reset(struct net_device *dev)
581 {
582 struct ax_device *ax = to_ax_dev(dev);
583 return mii_nway_restart(&ax->mii);
584 }
585
586 static u32 ax_get_link(struct net_device *dev)
587 {
588 struct ax_device *ax = to_ax_dev(dev);
589 return mii_link_ok(&ax->mii);
590 }
591
592 static const struct ethtool_ops ax_ethtool_ops = {
593 .get_drvinfo = ax_get_drvinfo,
594 .get_settings = ax_get_settings,
595 .set_settings = ax_set_settings,
596 .nway_reset = ax_nway_reset,
597 .get_link = ax_get_link,
598 };
599
600 #ifdef CONFIG_AX88796_93CX6
601 static void ax_eeprom_register_read(struct eeprom_93cx6 *eeprom)
602 {
603 struct ei_device *ei_local = eeprom->data;
604 u8 reg = ei_inb(ei_local->mem + AX_MEMR);
605
606 eeprom->reg_data_in = reg & AX_MEMR_EEI;
607 eeprom->reg_data_out = reg & AX_MEMR_EEO; /* Input pin */
608 eeprom->reg_data_clock = reg & AX_MEMR_EECLK;
609 eeprom->reg_chip_select = reg & AX_MEMR_EECS;
610 }
611
612 static void ax_eeprom_register_write(struct eeprom_93cx6 *eeprom)
613 {
614 struct ei_device *ei_local = eeprom->data;
615 u8 reg = ei_inb(ei_local->mem + AX_MEMR);
616
617 reg &= ~(AX_MEMR_EEI | AX_MEMR_EECLK | AX_MEMR_EECS);
618
619 if (eeprom->reg_data_in)
620 reg |= AX_MEMR_EEI;
621 if (eeprom->reg_data_clock)
622 reg |= AX_MEMR_EECLK;
623 if (eeprom->reg_chip_select)
624 reg |= AX_MEMR_EECS;
625
626 ei_outb(reg, ei_local->mem + AX_MEMR);
627 udelay(10);
628 }
629 #endif
630
631 static const struct net_device_ops ax_netdev_ops = {
632 .ndo_open = ax_open,
633 .ndo_stop = ax_close,
634 .ndo_do_ioctl = ax_ioctl,
635
636 .ndo_start_xmit = ax_ei_start_xmit,
637 .ndo_tx_timeout = ax_ei_tx_timeout,
638 .ndo_get_stats = ax_ei_get_stats,
639 .ndo_set_multicast_list = ax_ei_set_multicast_list,
640 .ndo_validate_addr = eth_validate_addr,
641 .ndo_set_mac_address = eth_mac_addr,
642 .ndo_change_mtu = eth_change_mtu,
643 #ifdef CONFIG_NET_POLL_CONTROLLER
644 .ndo_poll_controller = ax_ei_poll,
645 #endif
646 };
647
648 /* setup code */
649
650 static void ax_initial_setup(struct net_device *dev, struct ei_device *ei_local)
651 {
652 void __iomem *ioaddr = ei_local->mem;
653 struct ax_device *ax = to_ax_dev(dev);
654
655 /* Select page 0*/
656 ei_outb(E8390_NODMA+E8390_PAGE0+E8390_STOP, ioaddr + E8390_CMD);
657
658 /* set to byte access */
659 ei_outb(ax->plat->dcr_val & ~1, ioaddr + EN0_DCFG);
660 ei_outb(ax->plat->gpoc_val, ioaddr + EI_SHIFT(0x17));
661 }
662
663 /* ax_init_dev
664 *
665 * initialise the specified device, taking care to note the MAC
666 * address it may already have (if configured), ensure
667 * the device is ready to be used by lib8390.c and registerd with
668 * the network layer.
669 */
670
671 static int ax_init_dev(struct net_device *dev, int first_init)
672 {
673 struct ei_device *ei_local = netdev_priv(dev);
674 struct ax_device *ax = to_ax_dev(dev);
675 void __iomem *ioaddr = ei_local->mem;
676 unsigned int start_page;
677 unsigned int stop_page;
678 int ret;
679 int i;
680
681 ret = ax_initial_check(dev);
682 if (ret)
683 goto err_out;
684
685 /* setup goes here */
686
687 ax_initial_setup(dev, ei_local);
688
689 /* read the mac from the card prom if we need it */
690
691 if (first_init && ax->plat->flags & AXFLG_HAS_EEPROM) {
692 unsigned char SA_prom[32];
693
694 for(i = 0; i < sizeof(SA_prom); i+=2) {
695 SA_prom[i] = ei_inb(ioaddr + NE_DATAPORT);
696 SA_prom[i+1] = ei_inb(ioaddr + NE_DATAPORT);
697 }
698
699 if (ax->plat->wordlength == 2)
700 for (i = 0; i < 16; i++)
701 SA_prom[i] = SA_prom[i+i];
702
703 memcpy(dev->dev_addr, SA_prom, 6);
704 }
705
706 #ifdef CONFIG_AX88796_93CX6
707 if (first_init && ax->plat->flags & AXFLG_HAS_93CX6) {
708 unsigned char mac_addr[6];
709 struct eeprom_93cx6 eeprom;
710
711 eeprom.data = ei_local;
712 eeprom.register_read = ax_eeprom_register_read;
713 eeprom.register_write = ax_eeprom_register_write;
714 eeprom.width = PCI_EEPROM_WIDTH_93C56;
715
716 eeprom_93cx6_multiread(&eeprom, 0,
717 (__le16 __force *)mac_addr,
718 sizeof(mac_addr) >> 1);
719
720 memcpy(dev->dev_addr, mac_addr, 6);
721 }
722 #endif
723 if (ax->plat->wordlength == 2) {
724 /* We must set the 8390 for word mode. */
725 ei_outb(ax->plat->dcr_val, ei_local->mem + EN0_DCFG);
726 start_page = NESM_START_PG;
727 stop_page = NESM_STOP_PG;
728 } else {
729 start_page = NE1SM_START_PG;
730 stop_page = NE1SM_STOP_PG;
731 }
732
733 /* load the mac-address from the device if this is the
734 * first time we've initialised */
735
736 if (first_init) {
737 if (ax->plat->flags & AXFLG_MAC_FROMDEV) {
738 ei_outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP,
739 ei_local->mem + E8390_CMD); /* 0x61 */
740 for (i = 0; i < ETHER_ADDR_LEN; i++)
741 dev->dev_addr[i] =
742 ei_inb(ioaddr + EN1_PHYS_SHIFT(i));
743 }
744
745 if ((ax->plat->flags & AXFLG_MAC_FROMPLATFORM) &&
746 ax->plat->mac_addr)
747 memcpy(dev->dev_addr, ax->plat->mac_addr,
748 ETHER_ADDR_LEN);
749 }
750
751 ax_reset_8390(dev);
752
753 ei_status.name = "AX88796";
754 ei_status.tx_start_page = start_page;
755 ei_status.stop_page = stop_page;
756 ei_status.word16 = (ax->plat->wordlength == 2);
757 ei_status.rx_start_page = start_page + TX_PAGES;
758
759 #ifdef PACKETBUF_MEMSIZE
760 /* Allow the packet buffer size to be overridden by know-it-alls. */
761 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
762 #endif
763
764 ei_status.reset_8390 = &ax_reset_8390;
765 ei_status.block_input = &ax_block_input;
766 ei_status.block_output = &ax_block_output;
767 ei_status.get_8390_hdr = &ax_get_8390_hdr;
768 ei_status.priv = 0;
769
770 dev->netdev_ops = &ax_netdev_ops;
771 dev->ethtool_ops = &ax_ethtool_ops;
772
773 ax->msg_enable = NETIF_MSG_LINK;
774 ax->mii.phy_id_mask = 0x1f;
775 ax->mii.reg_num_mask = 0x1f;
776 ax->mii.phy_id = 0x10; /* onboard phy */
777 ax->mii.force_media = 0;
778 ax->mii.full_duplex = 0;
779 ax->mii.mdio_read = ax_phy_read;
780 ax->mii.mdio_write = ax_phy_write;
781 ax->mii.dev = dev;
782
783 ax_NS8390_init(dev, 0);
784
785 if (first_init)
786 dev_info(&ax->dev->dev, "%dbit, irq %d, %lx, MAC: %pM\n",
787 ei_status.word16 ? 16:8, dev->irq, dev->base_addr,
788 dev->dev_addr);
789
790 ret = register_netdev(dev);
791 if (ret)
792 goto out_irq;
793
794 return 0;
795
796 out_irq:
797 /* cleanup irq */
798 free_irq(dev->irq, dev);
799 err_out:
800 return ret;
801 }
802
803 static int ax_remove(struct platform_device *_dev)
804 {
805 struct net_device *dev = platform_get_drvdata(_dev);
806 struct ax_device *ax;
807
808 ax = to_ax_dev(dev);
809
810 unregister_netdev(dev);
811 free_irq(dev->irq, dev);
812
813 iounmap(ei_status.mem);
814 release_resource(ax->mem);
815 kfree(ax->mem);
816
817 if (ax->map2) {
818 iounmap(ax->map2);
819 release_resource(ax->mem2);
820 kfree(ax->mem2);
821 }
822
823 free_netdev(dev);
824
825 return 0;
826 }
827
828 /* ax_probe
829 *
830 * This is the entry point when the platform device system uses to
831 * notify us of a new device to attach to. Allocate memory, find
832 * the resources and information passed, and map the necessary registers.
833 */
834
835 static int ax_probe(struct platform_device *pdev)
836 {
837 struct net_device *dev;
838 struct ax_device *ax;
839 struct resource *res;
840 size_t size;
841 int ret = 0;
842
843 dev = ax__alloc_ei_netdev(sizeof(struct ax_device));
844 if (dev == NULL)
845 return -ENOMEM;
846
847 /* ok, let's setup our device */
848 ax = to_ax_dev(dev);
849
850 memset(ax, 0, sizeof(struct ax_device));
851
852 spin_lock_init(&ax->mii_lock);
853
854 ax->dev = pdev;
855 ax->plat = pdev->dev.platform_data;
856 platform_set_drvdata(pdev, dev);
857
858 ei_status.rxcr_base = ax->plat->rcr_val;
859
860 /* find the platform resources */
861
862 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
863 if (res == NULL) {
864 dev_err(&pdev->dev, "no IRQ specified\n");
865 goto exit_mem;
866 }
867
868 dev->irq = res->start;
869 ax->irqflags = res->flags & IRQF_TRIGGER_MASK;
870
871 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
872 if (res == NULL) {
873 dev_err(&pdev->dev, "no MEM specified\n");
874 ret = -ENXIO;
875 goto exit_mem;
876 }
877
878 size = (res->end - res->start) + 1;
879
880 /* setup the register offsets from either the platform data
881 * or by using the size of the resource provided */
882
883 if (ax->plat->reg_offsets)
884 ei_status.reg_offset = ax->plat->reg_offsets;
885 else {
886 ei_status.reg_offset = ax->reg_offsets;
887 for (ret = 0; ret < 0x18; ret++)
888 ax->reg_offsets[ret] = (size / 0x18) * ret;
889 }
890
891 ax->mem = request_mem_region(res->start, size, pdev->name);
892 if (ax->mem == NULL) {
893 dev_err(&pdev->dev, "cannot reserve registers\n");
894 ret = -ENXIO;
895 goto exit_mem;
896 }
897
898 ei_status.mem = ioremap(res->start, size);
899 dev->base_addr = (unsigned long)ei_status.mem;
900
901 if (ei_status.mem == NULL) {
902 dev_err(&pdev->dev, "Cannot ioremap area (%08llx,%08llx)\n",
903 (unsigned long long)res->start,
904 (unsigned long long)res->end);
905
906 ret = -ENXIO;
907 goto exit_req;
908 }
909
910 /* look for reset area */
911
912 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
913 if (res == NULL) {
914 if (!ax->plat->reg_offsets) {
915 for (ret = 0; ret < 0x20; ret++)
916 ax->reg_offsets[ret] = (size / 0x20) * ret;
917 }
918
919 ax->map2 = NULL;
920 } else {
921 size = (res->end - res->start) + 1;
922
923 ax->mem2 = request_mem_region(res->start, size, pdev->name);
924 if (ax->mem == NULL) {
925 dev_err(&pdev->dev, "cannot reserve registers\n");
926 ret = -ENXIO;
927 goto exit_mem1;
928 }
929
930 ax->map2 = ioremap(res->start, size);
931 if (ax->map2 == NULL) {
932 dev_err(&pdev->dev, "cannot map reset register\n");
933 ret = -ENXIO;
934 goto exit_mem2;
935 }
936
937 ei_status.reg_offset[0x1f] = ax->map2 - ei_status.mem;
938 }
939
940 /* got resources, now initialise and register device */
941
942 ret = ax_init_dev(dev, 1);
943 if (!ret)
944 return 0;
945
946 if (ax->map2 == NULL)
947 goto exit_mem1;
948
949 iounmap(ax->map2);
950
951 exit_mem2:
952 release_resource(ax->mem2);
953 kfree(ax->mem2);
954
955 exit_mem1:
956 iounmap(ei_status.mem);
957
958 exit_req:
959 release_resource(ax->mem);
960 kfree(ax->mem);
961
962 exit_mem:
963 free_netdev(dev);
964
965 return ret;
966 }
967
968 /* suspend and resume */
969
970 #ifdef CONFIG_PM
971 static int ax_suspend(struct platform_device *dev, pm_message_t state)
972 {
973 struct net_device *ndev = platform_get_drvdata(dev);
974 struct ax_device *ax = to_ax_dev(ndev);
975
976 ax->resume_open = ax->running;
977
978 netif_device_detach(ndev);
979 ax_close(ndev);
980
981 return 0;
982 }
983
984 static int ax_resume(struct platform_device *pdev)
985 {
986 struct net_device *ndev = platform_get_drvdata(pdev);
987 struct ax_device *ax = to_ax_dev(ndev);
988
989 ax_initial_setup(ndev, netdev_priv(ndev));
990 ax_NS8390_init(ndev, ax->resume_open);
991 netif_device_attach(ndev);
992
993 if (ax->resume_open)
994 ax_open(ndev);
995
996 return 0;
997 }
998
999 #else
1000 #define ax_suspend NULL
1001 #define ax_resume NULL
1002 #endif
1003
1004 static struct platform_driver axdrv = {
1005 .driver = {
1006 .name = "ax88796",
1007 .owner = THIS_MODULE,
1008 },
1009 .probe = ax_probe,
1010 .remove = ax_remove,
1011 .suspend = ax_suspend,
1012 .resume = ax_resume,
1013 };
1014
1015 static int __init axdrv_init(void)
1016 {
1017 return platform_driver_register(&axdrv);
1018 }
1019
1020 static void __exit axdrv_exit(void)
1021 {
1022 platform_driver_unregister(&axdrv);
1023 }
1024
1025 module_init(axdrv_init);
1026 module_exit(axdrv_exit);
1027
1028 MODULE_DESCRIPTION("AX88796 10/100 Ethernet platform driver");
1029 MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>");
1030 MODULE_LICENSE("GPL v2");
1031 MODULE_ALIAS("platform:ax88796");
1032
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