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Ben Dooks825a2ff2007-07-03 16:53:09 +01001/* 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>
Magnus Damm89e536a2007-09-28 22:42:16 -070027#include <linux/eeprom_93cx6.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090028#include <linux/slab.h>
Ben Dooks825a2ff2007-07-03 16:53:09 +010029
30#include <net/ax88796.h>
31
32#include <asm/system.h>
33#include <asm/io.h>
34
35static int phy_debug = 0;
36
37/* Rename the lib8390.c functions to show that they are in this driver */
38#define __ei_open ax_ei_open
39#define __ei_close ax_ei_close
40#define __ei_poll ax_ei_poll
Magnus Dammd57bc362009-01-14 21:05:55 -080041#define __ei_start_xmit ax_ei_start_xmit
Ben Dooks825a2ff2007-07-03 16:53:09 +010042#define __ei_tx_timeout ax_ei_tx_timeout
Magnus Dammd57bc362009-01-14 21:05:55 -080043#define __ei_get_stats ax_ei_get_stats
44#define __ei_set_multicast_list ax_ei_set_multicast_list
Ben Dooks825a2ff2007-07-03 16:53:09 +010045#define __ei_interrupt ax_ei_interrupt
46#define ____alloc_ei_netdev ax__alloc_ei_netdev
47#define __NS8390_init ax_NS8390_init
48
49/* force unsigned long back to 'void __iomem *' */
50#define ax_convert_addr(_a) ((void __force __iomem *)(_a))
51
52#define ei_inb(_a) readb(ax_convert_addr(_a))
53#define ei_outb(_v, _a) writeb(_v, ax_convert_addr(_a))
54
55#define ei_inb_p(_a) ei_inb(_a)
56#define ei_outb_p(_v, _a) ei_outb(_v, _a)
57
58/* define EI_SHIFT() to take into account our register offsets */
59#define EI_SHIFT(x) (ei_local->reg_offset[(x)])
60
61/* Ensure we have our RCR base value */
62#define AX88796_PLATFORM
63
64static unsigned char version[] = "ax88796.c: Copyright 2005,2007 Simtec Electronics\n";
65
66#include "lib8390.c"
67
68#define DRV_NAME "ax88796"
69#define DRV_VERSION "1.00"
70
71/* from ne.c */
72#define NE_CMD EI_SHIFT(0x00)
73#define NE_RESET EI_SHIFT(0x1f)
74#define NE_DATAPORT EI_SHIFT(0x10)
75
76#define NE1SM_START_PG 0x20 /* First page of TX buffer */
77#define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
78#define NESM_START_PG 0x40 /* First page of TX buffer */
79#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
80
81/* device private data */
82
83struct ax_device {
84 struct timer_list mii_timer;
85 spinlock_t mii_lock;
86 struct mii_if_info mii;
87
88 u32 msg_enable;
89 void __iomem *map2;
90 struct platform_device *dev;
91 struct resource *mem;
92 struct resource *mem2;
93 struct ax_plat_data *plat;
94
95 unsigned char running;
96 unsigned char resume_open;
Daniel Mack47cb0352009-03-24 23:31:22 -070097 unsigned int irqflags;
Ben Dooks825a2ff2007-07-03 16:53:09 +010098
99 u32 reg_offsets[0x20];
100};
101
102static inline struct ax_device *to_ax_dev(struct net_device *dev)
103{
104 struct ei_device *ei_local = netdev_priv(dev);
105 return (struct ax_device *)(ei_local+1);
106}
107
108/* ax_initial_check
109 *
110 * do an initial probe for the card to check wether it exists
111 * and is functional
112 */
113
114static int ax_initial_check(struct net_device *dev)
115{
116 struct ei_device *ei_local = netdev_priv(dev);
117 void __iomem *ioaddr = ei_local->mem;
118 int reg0;
119 int regd;
120
121 reg0 = ei_inb(ioaddr);
122 if (reg0 == 0xFF)
123 return -ENODEV;
124
125 ei_outb(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
126 regd = ei_inb(ioaddr + 0x0d);
127 ei_outb(0xff, ioaddr + 0x0d);
128 ei_outb(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
129 ei_inb(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
130 if (ei_inb(ioaddr + EN0_COUNTER0) != 0) {
131 ei_outb(reg0, ioaddr);
132 ei_outb(regd, ioaddr + 0x0d); /* Restore the old values. */
133 return -ENODEV;
134 }
135
136 return 0;
137}
138
139/* Hard reset the card. This used to pause for the same period that a
140 8390 reset command required, but that shouldn't be necessary. */
141
142static void ax_reset_8390(struct net_device *dev)
143{
144 struct ei_device *ei_local = netdev_priv(dev);
Ben Dooks237c5e82008-01-31 11:25:31 +0000145 struct ax_device *ax = to_ax_dev(dev);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100146 unsigned long reset_start_time = jiffies;
147 void __iomem *addr = (void __iomem *)dev->base_addr;
148
149 if (ei_debug > 1)
Ben Dooks237c5e82008-01-31 11:25:31 +0000150 dev_dbg(&ax->dev->dev, "resetting the 8390 t=%ld\n", jiffies);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100151
152 ei_outb(ei_inb(addr + NE_RESET), addr + NE_RESET);
153
154 ei_status.txing = 0;
155 ei_status.dmaing = 0;
156
157 /* This check _should_not_ be necessary, omit eventually. */
158 while ((ei_inb(addr + EN0_ISR) & ENISR_RESET) == 0) {
159 if (jiffies - reset_start_time > 2*HZ/100) {
Ben Dooks237c5e82008-01-31 11:25:31 +0000160 dev_warn(&ax->dev->dev, "%s: %s did not complete.\n",
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700161 __func__, dev->name);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100162 break;
163 }
164 }
165
166 ei_outb(ENISR_RESET, addr + EN0_ISR); /* Ack intr. */
167}
168
169
170static void ax_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
171 int ring_page)
172{
173 struct ei_device *ei_local = netdev_priv(dev);
Ben Dooks237c5e82008-01-31 11:25:31 +0000174 struct ax_device *ax = to_ax_dev(dev);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100175 void __iomem *nic_base = ei_local->mem;
176
177 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
178 if (ei_status.dmaing) {
Ben Dooks237c5e82008-01-31 11:25:31 +0000179 dev_err(&ax->dev->dev, "%s: DMAing conflict in %s "
180 "[DMAstat:%d][irqlock:%d].\n",
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700181 dev->name, __func__,
Ben Dooks237c5e82008-01-31 11:25:31 +0000182 ei_status.dmaing, ei_status.irqlock);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100183 return;
184 }
185
186 ei_status.dmaing |= 0x01;
187 ei_outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
188 ei_outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
189 ei_outb(0, nic_base + EN0_RCNTHI);
190 ei_outb(0, nic_base + EN0_RSARLO); /* On page boundary */
191 ei_outb(ring_page, nic_base + EN0_RSARHI);
192 ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
193
194 if (ei_status.word16)
195 readsw(nic_base + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
196 else
197 readsb(nic_base + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));
198
199 ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
200 ei_status.dmaing &= ~0x01;
201
202 le16_to_cpus(&hdr->count);
203}
204
205
206/* Block input and output, similar to the Crynwr packet driver. If you
207 are porting to a new ethercard, look at the packet driver source for hints.
208 The NEx000 doesn't share the on-board packet memory -- you have to put
209 the packet out through the "remote DMA" dataport using ei_outb. */
210
211static void ax_block_input(struct net_device *dev, int count,
212 struct sk_buff *skb, int ring_offset)
213{
214 struct ei_device *ei_local = netdev_priv(dev);
Ben Dooks237c5e82008-01-31 11:25:31 +0000215 struct ax_device *ax = to_ax_dev(dev);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100216 void __iomem *nic_base = ei_local->mem;
217 char *buf = skb->data;
218
219 if (ei_status.dmaing) {
Ben Dooks237c5e82008-01-31 11:25:31 +0000220 dev_err(&ax->dev->dev,
221 "%s: DMAing conflict in %s "
Ben Dooks825a2ff2007-07-03 16:53:09 +0100222 "[DMAstat:%d][irqlock:%d].\n",
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700223 dev->name, __func__,
Ben Dooks237c5e82008-01-31 11:25:31 +0000224 ei_status.dmaing, ei_status.irqlock);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100225 return;
226 }
227
228 ei_status.dmaing |= 0x01;
229
230 ei_outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
231 ei_outb(count & 0xff, nic_base + EN0_RCNTLO);
232 ei_outb(count >> 8, nic_base + EN0_RCNTHI);
233 ei_outb(ring_offset & 0xff, nic_base + EN0_RSARLO);
234 ei_outb(ring_offset >> 8, nic_base + EN0_RSARHI);
235 ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
236
237 if (ei_status.word16) {
238 readsw(nic_base + NE_DATAPORT, buf, count >> 1);
239 if (count & 0x01)
240 buf[count-1] = ei_inb(nic_base + NE_DATAPORT);
241
242 } else {
243 readsb(nic_base + NE_DATAPORT, buf, count);
244 }
245
246 ei_status.dmaing &= ~1;
247}
248
249static void ax_block_output(struct net_device *dev, int count,
250 const unsigned char *buf, const int start_page)
251{
252 struct ei_device *ei_local = netdev_priv(dev);
Ben Dooks237c5e82008-01-31 11:25:31 +0000253 struct ax_device *ax = to_ax_dev(dev);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100254 void __iomem *nic_base = ei_local->mem;
255 unsigned long dma_start;
256
257 /* Round the count up for word writes. Do we need to do this?
258 What effect will an odd byte count have on the 8390?
259 I should check someday. */
260
261 if (ei_status.word16 && (count & 0x01))
262 count++;
263
264 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
265 if (ei_status.dmaing) {
Ben Dooks237c5e82008-01-31 11:25:31 +0000266 dev_err(&ax->dev->dev, "%s: DMAing conflict in %s."
Ben Dooks825a2ff2007-07-03 16:53:09 +0100267 "[DMAstat:%d][irqlock:%d]\n",
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700268 dev->name, __func__,
Ben Dooks825a2ff2007-07-03 16:53:09 +0100269 ei_status.dmaing, ei_status.irqlock);
270 return;
271 }
272
273 ei_status.dmaing |= 0x01;
274 /* We should already be in page 0, but to be safe... */
275 ei_outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
276
277 ei_outb(ENISR_RDC, nic_base + EN0_ISR);
278
279 /* Now the normal output. */
280 ei_outb(count & 0xff, nic_base + EN0_RCNTLO);
281 ei_outb(count >> 8, nic_base + EN0_RCNTHI);
282 ei_outb(0x00, nic_base + EN0_RSARLO);
283 ei_outb(start_page, nic_base + EN0_RSARHI);
284
285 ei_outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
286 if (ei_status.word16) {
287 writesw(nic_base + NE_DATAPORT, buf, count>>1);
288 } else {
289 writesb(nic_base + NE_DATAPORT, buf, count);
290 }
291
292 dma_start = jiffies;
293
294 while ((ei_inb(nic_base + EN0_ISR) & ENISR_RDC) == 0) {
295 if (jiffies - dma_start > 2*HZ/100) { /* 20ms */
Ben Dooks237c5e82008-01-31 11:25:31 +0000296 dev_warn(&ax->dev->dev,
297 "%s: timeout waiting for Tx RDC.\n", dev->name);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100298 ax_reset_8390(dev);
299 ax_NS8390_init(dev,1);
300 break;
301 }
302 }
303
304 ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
305 ei_status.dmaing &= ~0x01;
306 return;
307}
308
309/* definitions for accessing MII/EEPROM interface */
310
311#define AX_MEMR EI_SHIFT(0x14)
312#define AX_MEMR_MDC (1<<0)
313#define AX_MEMR_MDIR (1<<1)
314#define AX_MEMR_MDI (1<<2)
315#define AX_MEMR_MDO (1<<3)
316#define AX_MEMR_EECS (1<<4)
317#define AX_MEMR_EEI (1<<5)
318#define AX_MEMR_EEO (1<<6)
319#define AX_MEMR_EECLK (1<<7)
320
321/* ax_mii_ei_outbits
322 *
323 * write the specified set of bits to the phy
324*/
325
326static void
327ax_mii_ei_outbits(struct net_device *dev, unsigned int bits, int len)
328{
329 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
330 void __iomem *memr_addr = (void __iomem *)dev->base_addr + AX_MEMR;
331 unsigned int memr;
332
333 /* clock low, data to output mode */
334 memr = ei_inb(memr_addr);
335 memr &= ~(AX_MEMR_MDC | AX_MEMR_MDIR);
336 ei_outb(memr, memr_addr);
337
338 for (len--; len >= 0; len--) {
339 if (bits & (1 << len))
340 memr |= AX_MEMR_MDO;
341 else
342 memr &= ~AX_MEMR_MDO;
343
344 ei_outb(memr, memr_addr);
345
346 /* clock high */
347
348 ei_outb(memr | AX_MEMR_MDC, memr_addr);
349 udelay(1);
350
351 /* clock low */
352 ei_outb(memr, memr_addr);
353 }
354
355 /* leaves the clock line low, mdir input */
356 memr |= AX_MEMR_MDIR;
357 ei_outb(memr, (void __iomem *)dev->base_addr + AX_MEMR);
358}
359
360/* ax_phy_ei_inbits
361 *
362 * read a specified number of bits from the phy
363*/
364
365static unsigned int
366ax_phy_ei_inbits(struct net_device *dev, int no)
367{
368 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
369 void __iomem *memr_addr = (void __iomem *)dev->base_addr + AX_MEMR;
370 unsigned int memr;
371 unsigned int result = 0;
372
373 /* clock low, data to input mode */
374 memr = ei_inb(memr_addr);
375 memr &= ~AX_MEMR_MDC;
376 memr |= AX_MEMR_MDIR;
377 ei_outb(memr, memr_addr);
378
379 for (no--; no >= 0; no--) {
380 ei_outb(memr | AX_MEMR_MDC, memr_addr);
381
382 udelay(1);
383
384 if (ei_inb(memr_addr) & AX_MEMR_MDI)
385 result |= (1<<no);
386
387 ei_outb(memr, memr_addr);
388 }
389
390 return result;
391}
392
393/* ax_phy_issueaddr
394 *
395 * use the low level bit shifting routines to send the address
396 * and command to the specified phy
397*/
398
399static void
400ax_phy_issueaddr(struct net_device *dev, int phy_addr, int reg, int opc)
401{
402 if (phy_debug)
403 pr_debug("%s: dev %p, %04x, %04x, %d\n",
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700404 __func__, dev, phy_addr, reg, opc);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100405
406 ax_mii_ei_outbits(dev, 0x3f, 6); /* pre-amble */
407 ax_mii_ei_outbits(dev, 1, 2); /* frame-start */
408 ax_mii_ei_outbits(dev, opc, 2); /* op code */
409 ax_mii_ei_outbits(dev, phy_addr, 5); /* phy address */
410 ax_mii_ei_outbits(dev, reg, 5); /* reg address */
411}
412
413static int
414ax_phy_read(struct net_device *dev, int phy_addr, int reg)
415{
416 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
417 unsigned long flags;
418 unsigned int result;
419
420 spin_lock_irqsave(&ei_local->page_lock, flags);
421
422 ax_phy_issueaddr(dev, phy_addr, reg, 2);
423
424 result = ax_phy_ei_inbits(dev, 17);
425 result &= ~(3<<16);
426
427 spin_unlock_irqrestore(&ei_local->page_lock, flags);
428
429 if (phy_debug)
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700430 pr_debug("%s: %04x.%04x => read %04x\n", __func__,
Ben Dooks825a2ff2007-07-03 16:53:09 +0100431 phy_addr, reg, result);
432
433 return result;
434}
435
436static void
437ax_phy_write(struct net_device *dev, int phy_addr, int reg, int value)
438{
439 struct ei_device *ei = (struct ei_device *) netdev_priv(dev);
Ben Dooks237c5e82008-01-31 11:25:31 +0000440 struct ax_device *ax = to_ax_dev(dev);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100441 unsigned long flags;
442
Ben Dooks237c5e82008-01-31 11:25:31 +0000443 dev_dbg(&ax->dev->dev, "%s: %p, %04x, %04x %04x\n",
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700444 __func__, dev, phy_addr, reg, value);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100445
446 spin_lock_irqsave(&ei->page_lock, flags);
447
448 ax_phy_issueaddr(dev, phy_addr, reg, 1);
449 ax_mii_ei_outbits(dev, 2, 2); /* send TA */
450 ax_mii_ei_outbits(dev, value, 16);
451
452 spin_unlock_irqrestore(&ei->page_lock, flags);
453}
454
455static void ax_mii_expiry(unsigned long data)
456{
457 struct net_device *dev = (struct net_device *)data;
458 struct ax_device *ax = to_ax_dev(dev);
459 unsigned long flags;
460
461 spin_lock_irqsave(&ax->mii_lock, flags);
462 mii_check_media(&ax->mii, netif_msg_link(ax), 0);
463 spin_unlock_irqrestore(&ax->mii_lock, flags);
464
465 if (ax->running) {
466 ax->mii_timer.expires = jiffies + HZ*2;
467 add_timer(&ax->mii_timer);
468 }
469}
470
471static int ax_open(struct net_device *dev)
472{
473 struct ax_device *ax = to_ax_dev(dev);
474 struct ei_device *ei_local = netdev_priv(dev);
475 int ret;
476
Al Viro2832e852007-07-15 21:00:51 +0100477 dev_dbg(&ax->dev->dev, "%s: open\n", dev->name);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100478
Daniel Mack47cb0352009-03-24 23:31:22 -0700479 ret = request_irq(dev->irq, ax_ei_interrupt, ax->irqflags,
480 dev->name, dev);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100481 if (ret)
482 return ret;
483
484 ret = ax_ei_open(dev);
485 if (ret)
486 return ret;
487
488 /* turn the phy on (if turned off) */
489
490 ei_outb(ax->plat->gpoc_val, ei_local->mem + EI_SHIFT(0x17));
491 ax->running = 1;
492
493 /* start the MII timer */
494
495 init_timer(&ax->mii_timer);
496
497 ax->mii_timer.expires = jiffies+1;
498 ax->mii_timer.data = (unsigned long) dev;
499 ax->mii_timer.function = ax_mii_expiry;
500
501 add_timer(&ax->mii_timer);
502
503 return 0;
504}
505
506static int ax_close(struct net_device *dev)
507{
508 struct ax_device *ax = to_ax_dev(dev);
509 struct ei_device *ei_local = netdev_priv(dev);
510
Al Viro2832e852007-07-15 21:00:51 +0100511 dev_dbg(&ax->dev->dev, "%s: close\n", dev->name);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100512
513 /* turn the phy off */
514
515 ei_outb(ax->plat->gpoc_val | (1<<6),
516 ei_local->mem + EI_SHIFT(0x17));
517
518 ax->running = 0;
519 wmb();
520
521 del_timer_sync(&ax->mii_timer);
522 ax_ei_close(dev);
523
524 free_irq(dev->irq, dev);
525 return 0;
526}
527
528static int ax_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
529{
530 struct ax_device *ax = to_ax_dev(dev);
531 unsigned long flags;
532 int rc;
533
534 if (!netif_running(dev))
535 return -EINVAL;
536
537 spin_lock_irqsave(&ax->mii_lock, flags);
538 rc = generic_mii_ioctl(&ax->mii, if_mii(req), cmd, NULL);
539 spin_unlock_irqrestore(&ax->mii_lock, flags);
540
541 return rc;
542}
543
544/* ethtool ops */
545
546static void ax_get_drvinfo(struct net_device *dev,
547 struct ethtool_drvinfo *info)
548{
549 struct ax_device *ax = to_ax_dev(dev);
550
551 strcpy(info->driver, DRV_NAME);
552 strcpy(info->version, DRV_VERSION);
553 strcpy(info->bus_info, ax->dev->name);
554}
555
556static int ax_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
557{
558 struct ax_device *ax = to_ax_dev(dev);
559 unsigned long flags;
560
561 spin_lock_irqsave(&ax->mii_lock, flags);
562 mii_ethtool_gset(&ax->mii, cmd);
Ben Dooksc0912582008-08-07 17:21:09 +0100563 spin_unlock_irqrestore(&ax->mii_lock, flags);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100564
565 return 0;
566}
567
568static int ax_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
569{
570 struct ax_device *ax = to_ax_dev(dev);
571 unsigned long flags;
572 int rc;
573
574 spin_lock_irqsave(&ax->mii_lock, flags);
575 rc = mii_ethtool_sset(&ax->mii, cmd);
Ben Dooksc0912582008-08-07 17:21:09 +0100576 spin_unlock_irqrestore(&ax->mii_lock, flags);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100577
578 return rc;
579}
580
581static int ax_nway_reset(struct net_device *dev)
582{
583 struct ax_device *ax = to_ax_dev(dev);
584 return mii_nway_restart(&ax->mii);
585}
586
587static u32 ax_get_link(struct net_device *dev)
588{
589 struct ax_device *ax = to_ax_dev(dev);
590 return mii_link_ok(&ax->mii);
591}
592
593static const struct ethtool_ops ax_ethtool_ops = {
594 .get_drvinfo = ax_get_drvinfo,
595 .get_settings = ax_get_settings,
596 .set_settings = ax_set_settings,
597 .nway_reset = ax_nway_reset,
598 .get_link = ax_get_link,
Ben Dooks825a2ff2007-07-03 16:53:09 +0100599};
600
Magnus Damm89e536a2007-09-28 22:42:16 -0700601#ifdef CONFIG_AX88796_93CX6
602static void ax_eeprom_register_read(struct eeprom_93cx6 *eeprom)
603{
604 struct ei_device *ei_local = eeprom->data;
605 u8 reg = ei_inb(ei_local->mem + AX_MEMR);
606
607 eeprom->reg_data_in = reg & AX_MEMR_EEI;
608 eeprom->reg_data_out = reg & AX_MEMR_EEO; /* Input pin */
609 eeprom->reg_data_clock = reg & AX_MEMR_EECLK;
610 eeprom->reg_chip_select = reg & AX_MEMR_EECS;
611}
612
613static void ax_eeprom_register_write(struct eeprom_93cx6 *eeprom)
614{
615 struct ei_device *ei_local = eeprom->data;
616 u8 reg = ei_inb(ei_local->mem + AX_MEMR);
617
618 reg &= ~(AX_MEMR_EEI | AX_MEMR_EECLK | AX_MEMR_EECS);
619
620 if (eeprom->reg_data_in)
621 reg |= AX_MEMR_EEI;
622 if (eeprom->reg_data_clock)
623 reg |= AX_MEMR_EECLK;
624 if (eeprom->reg_chip_select)
625 reg |= AX_MEMR_EECS;
626
627 ei_outb(reg, ei_local->mem + AX_MEMR);
628 udelay(10);
629}
630#endif
631
Magnus Dammd57bc362009-01-14 21:05:55 -0800632static const struct net_device_ops ax_netdev_ops = {
633 .ndo_open = ax_open,
634 .ndo_stop = ax_close,
635 .ndo_do_ioctl = ax_ioctl,
636
637 .ndo_start_xmit = ax_ei_start_xmit,
638 .ndo_tx_timeout = ax_ei_tx_timeout,
639 .ndo_get_stats = ax_ei_get_stats,
640 .ndo_set_multicast_list = ax_ei_set_multicast_list,
641 .ndo_validate_addr = eth_validate_addr,
642 .ndo_set_mac_address = eth_mac_addr,
643 .ndo_change_mtu = eth_change_mtu,
644#ifdef CONFIG_NET_POLL_CONTROLLER
645 .ndo_poll_controller = ax_ei_poll,
646#endif
647};
648
Ben Dooks825a2ff2007-07-03 16:53:09 +0100649/* setup code */
650
651static void ax_initial_setup(struct net_device *dev, struct ei_device *ei_local)
652{
653 void __iomem *ioaddr = ei_local->mem;
654 struct ax_device *ax = to_ax_dev(dev);
655
656 /* Select page 0*/
657 ei_outb(E8390_NODMA+E8390_PAGE0+E8390_STOP, ioaddr + E8390_CMD);
658
659 /* set to byte access */
660 ei_outb(ax->plat->dcr_val & ~1, ioaddr + EN0_DCFG);
661 ei_outb(ax->plat->gpoc_val, ioaddr + EI_SHIFT(0x17));
662}
663
664/* ax_init_dev
665 *
666 * initialise the specified device, taking care to note the MAC
667 * address it may already have (if configured), ensure
668 * the device is ready to be used by lib8390.c and registerd with
669 * the network layer.
670 */
671
672static int ax_init_dev(struct net_device *dev, int first_init)
673{
674 struct ei_device *ei_local = netdev_priv(dev);
675 struct ax_device *ax = to_ax_dev(dev);
676 void __iomem *ioaddr = ei_local->mem;
677 unsigned int start_page;
678 unsigned int stop_page;
679 int ret;
680 int i;
681
682 ret = ax_initial_check(dev);
683 if (ret)
684 goto err_out;
685
686 /* setup goes here */
687
688 ax_initial_setup(dev, ei_local);
689
690 /* read the mac from the card prom if we need it */
691
692 if (first_init && ax->plat->flags & AXFLG_HAS_EEPROM) {
693 unsigned char SA_prom[32];
694
695 for(i = 0; i < sizeof(SA_prom); i+=2) {
696 SA_prom[i] = ei_inb(ioaddr + NE_DATAPORT);
697 SA_prom[i+1] = ei_inb(ioaddr + NE_DATAPORT);
698 }
699
700 if (ax->plat->wordlength == 2)
701 for (i = 0; i < 16; i++)
702 SA_prom[i] = SA_prom[i+i];
703
704 memcpy(dev->dev_addr, SA_prom, 6);
705 }
706
Magnus Damm89e536a2007-09-28 22:42:16 -0700707#ifdef CONFIG_AX88796_93CX6
708 if (first_init && ax->plat->flags & AXFLG_HAS_93CX6) {
709 unsigned char mac_addr[6];
710 struct eeprom_93cx6 eeprom;
711
712 eeprom.data = ei_local;
713 eeprom.register_read = ax_eeprom_register_read;
714 eeprom.register_write = ax_eeprom_register_write;
715 eeprom.width = PCI_EEPROM_WIDTH_93C56;
716
717 eeprom_93cx6_multiread(&eeprom, 0,
718 (__le16 __force *)mac_addr,
719 sizeof(mac_addr) >> 1);
720
721 memcpy(dev->dev_addr, mac_addr, 6);
722 }
723#endif
Ben Dooks825a2ff2007-07-03 16:53:09 +0100724 if (ax->plat->wordlength == 2) {
725 /* We must set the 8390 for word mode. */
726 ei_outb(ax->plat->dcr_val, ei_local->mem + EN0_DCFG);
727 start_page = NESM_START_PG;
728 stop_page = NESM_STOP_PG;
729 } else {
730 start_page = NE1SM_START_PG;
731 stop_page = NE1SM_STOP_PG;
732 }
733
734 /* load the mac-address from the device if this is the
735 * first time we've initialised */
736
Daniel Mack67fca022009-03-24 23:32:03 -0700737 if (first_init) {
738 if (ax->plat->flags & AXFLG_MAC_FROMDEV) {
739 ei_outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP,
740 ei_local->mem + E8390_CMD); /* 0x61 */
741 for (i = 0; i < ETHER_ADDR_LEN; i++)
742 dev->dev_addr[i] =
743 ei_inb(ioaddr + EN1_PHYS_SHIFT(i));
744 }
Ben Dooks825a2ff2007-07-03 16:53:09 +0100745
Daniel Mack67fca022009-03-24 23:32:03 -0700746 if ((ax->plat->flags & AXFLG_MAC_FROMPLATFORM) &&
747 ax->plat->mac_addr)
748 memcpy(dev->dev_addr, ax->plat->mac_addr,
749 ETHER_ADDR_LEN);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100750 }
751
752 ax_reset_8390(dev);
753
754 ei_status.name = "AX88796";
755 ei_status.tx_start_page = start_page;
756 ei_status.stop_page = stop_page;
757 ei_status.word16 = (ax->plat->wordlength == 2);
758 ei_status.rx_start_page = start_page + TX_PAGES;
759
760#ifdef PACKETBUF_MEMSIZE
761 /* Allow the packet buffer size to be overridden by know-it-alls. */
762 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
763#endif
764
765 ei_status.reset_8390 = &ax_reset_8390;
766 ei_status.block_input = &ax_block_input;
767 ei_status.block_output = &ax_block_output;
768 ei_status.get_8390_hdr = &ax_get_8390_hdr;
769 ei_status.priv = 0;
770
Magnus Dammd57bc362009-01-14 21:05:55 -0800771 dev->netdev_ops = &ax_netdev_ops;
Ben Dooks825a2ff2007-07-03 16:53:09 +0100772 dev->ethtool_ops = &ax_ethtool_ops;
773
774 ax->msg_enable = NETIF_MSG_LINK;
775 ax->mii.phy_id_mask = 0x1f;
776 ax->mii.reg_num_mask = 0x1f;
777 ax->mii.phy_id = 0x10; /* onboard phy */
778 ax->mii.force_media = 0;
779 ax->mii.full_duplex = 0;
780 ax->mii.mdio_read = ax_phy_read;
781 ax->mii.mdio_write = ax_phy_write;
782 ax->mii.dev = dev;
783
Ben Dooks825a2ff2007-07-03 16:53:09 +0100784 ax_NS8390_init(dev, 0);
785
Johannes Berge1749612008-10-27 15:59:26 -0700786 if (first_init)
787 dev_info(&ax->dev->dev, "%dbit, irq %d, %lx, MAC: %pM\n",
Ben Dooks237c5e82008-01-31 11:25:31 +0000788 ei_status.word16 ? 16:8, dev->irq, dev->base_addr,
Johannes Berge1749612008-10-27 15:59:26 -0700789 dev->dev_addr);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100790
791 ret = register_netdev(dev);
792 if (ret)
793 goto out_irq;
794
795 return 0;
796
797 out_irq:
798 /* cleanup irq */
799 free_irq(dev->irq, dev);
800 err_out:
801 return ret;
802}
803
804static int ax_remove(struct platform_device *_dev)
805{
806 struct net_device *dev = platform_get_drvdata(_dev);
807 struct ax_device *ax;
808
809 ax = to_ax_dev(dev);
810
811 unregister_netdev(dev);
812 free_irq(dev->irq, dev);
813
814 iounmap(ei_status.mem);
815 release_resource(ax->mem);
816 kfree(ax->mem);
817
818 if (ax->map2) {
819 iounmap(ax->map2);
820 release_resource(ax->mem2);
821 kfree(ax->mem2);
822 }
823
824 free_netdev(dev);
825
826 return 0;
827}
828
829/* ax_probe
830 *
831 * This is the entry point when the platform device system uses to
832 * notify us of a new device to attach to. Allocate memory, find
833 * the resources and information passed, and map the necessary registers.
834*/
835
836static int ax_probe(struct platform_device *pdev)
837{
838 struct net_device *dev;
839 struct ax_device *ax;
840 struct resource *res;
841 size_t size;
Daniel Mack47cb0352009-03-24 23:31:22 -0700842 int ret = 0;
Ben Dooks825a2ff2007-07-03 16:53:09 +0100843
844 dev = ax__alloc_ei_netdev(sizeof(struct ax_device));
845 if (dev == NULL)
846 return -ENOMEM;
847
848 /* ok, let's setup our device */
849 ax = to_ax_dev(dev);
850
851 memset(ax, 0, sizeof(struct ax_device));
852
853 spin_lock_init(&ax->mii_lock);
854
855 ax->dev = pdev;
856 ax->plat = pdev->dev.platform_data;
857 platform_set_drvdata(pdev, dev);
858
859 ei_status.rxcr_base = ax->plat->rcr_val;
860
861 /* find the platform resources */
862
Daniel Mack47cb0352009-03-24 23:31:22 -0700863 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
864 if (res == NULL) {
Ben Dooks825a2ff2007-07-03 16:53:09 +0100865 dev_err(&pdev->dev, "no IRQ specified\n");
Ben Dooks825a2ff2007-07-03 16:53:09 +0100866 goto exit_mem;
867 }
Daniel Mack47cb0352009-03-24 23:31:22 -0700868
869 dev->irq = res->start;
870 ax->irqflags = res->flags & IRQF_TRIGGER_MASK;
Ben Dooks825a2ff2007-07-03 16:53:09 +0100871
872 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
873 if (res == NULL) {
874 dev_err(&pdev->dev, "no MEM specified\n");
875 ret = -ENXIO;
876 goto exit_mem;
877 }
878
879 size = (res->end - res->start) + 1;
880
881 /* setup the register offsets from either the platform data
882 * or by using the size of the resource provided */
883
884 if (ax->plat->reg_offsets)
885 ei_status.reg_offset = ax->plat->reg_offsets;
886 else {
887 ei_status.reg_offset = ax->reg_offsets;
888 for (ret = 0; ret < 0x18; ret++)
889 ax->reg_offsets[ret] = (size / 0x18) * ret;
890 }
891
892 ax->mem = request_mem_region(res->start, size, pdev->name);
893 if (ax->mem == NULL) {
894 dev_err(&pdev->dev, "cannot reserve registers\n");
895 ret = -ENXIO;
896 goto exit_mem;
897 }
898
899 ei_status.mem = ioremap(res->start, size);
Al Viroc7b17cb2007-07-26 17:36:29 +0100900 dev->base_addr = (unsigned long)ei_status.mem;
Ben Dooks825a2ff2007-07-03 16:53:09 +0100901
902 if (ei_status.mem == NULL) {
Andrew Mortonb4efe222007-08-10 14:05:21 -0700903 dev_err(&pdev->dev, "Cannot ioremap area (%08llx,%08llx)\n",
904 (unsigned long long)res->start,
905 (unsigned long long)res->end);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100906
907 ret = -ENXIO;
908 goto exit_req;
909 }
910
911 /* look for reset area */
912
913 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
914 if (res == NULL) {
915 if (!ax->plat->reg_offsets) {
916 for (ret = 0; ret < 0x20; ret++)
917 ax->reg_offsets[ret] = (size / 0x20) * ret;
918 }
919
920 ax->map2 = NULL;
921 } else {
922 size = (res->end - res->start) + 1;
923
924 ax->mem2 = request_mem_region(res->start, size, pdev->name);
Julia Lawallbcf4d812010-02-08 22:44:18 -0800925 if (ax->mem2 == NULL) {
Ben Dooks825a2ff2007-07-03 16:53:09 +0100926 dev_err(&pdev->dev, "cannot reserve registers\n");
927 ret = -ENXIO;
928 goto exit_mem1;
929 }
930
931 ax->map2 = ioremap(res->start, size);
932 if (ax->map2 == NULL) {
Joe Perches898eb712007-10-18 03:06:30 -0700933 dev_err(&pdev->dev, "cannot map reset register\n");
Ben Dooks825a2ff2007-07-03 16:53:09 +0100934 ret = -ENXIO;
935 goto exit_mem2;
936 }
937
938 ei_status.reg_offset[0x1f] = ax->map2 - ei_status.mem;
939 }
940
941 /* got resources, now initialise and register device */
942
943 ret = ax_init_dev(dev, 1);
944 if (!ret)
945 return 0;
946
947 if (ax->map2 == NULL)
948 goto exit_mem1;
949
950 iounmap(ax->map2);
951
952 exit_mem2:
953 release_resource(ax->mem2);
954 kfree(ax->mem2);
955
956 exit_mem1:
957 iounmap(ei_status.mem);
958
959 exit_req:
960 release_resource(ax->mem);
961 kfree(ax->mem);
962
963 exit_mem:
964 free_netdev(dev);
965
966 return ret;
967}
968
969/* suspend and resume */
970
971#ifdef CONFIG_PM
972static int ax_suspend(struct platform_device *dev, pm_message_t state)
973{
974 struct net_device *ndev = platform_get_drvdata(dev);
975 struct ax_device *ax = to_ax_dev(ndev);
976
977 ax->resume_open = ax->running;
978
979 netif_device_detach(ndev);
980 ax_close(ndev);
981
982 return 0;
983}
984
985static int ax_resume(struct platform_device *pdev)
986{
987 struct net_device *ndev = platform_get_drvdata(pdev);
988 struct ax_device *ax = to_ax_dev(ndev);
989
990 ax_initial_setup(ndev, netdev_priv(ndev));
991 ax_NS8390_init(ndev, ax->resume_open);
992 netif_device_attach(ndev);
993
994 if (ax->resume_open)
995 ax_open(ndev);
996
997 return 0;
998}
999
1000#else
1001#define ax_suspend NULL
1002#define ax_resume NULL
1003#endif
1004
1005static struct platform_driver axdrv = {
1006 .driver = {
1007 .name = "ax88796",
1008 .owner = THIS_MODULE,
1009 },
1010 .probe = ax_probe,
1011 .remove = ax_remove,
1012 .suspend = ax_suspend,
1013 .resume = ax_resume,
1014};
1015
1016static int __init axdrv_init(void)
1017{
1018 return platform_driver_register(&axdrv);
1019}
1020
1021static void __exit axdrv_exit(void)
1022{
1023 platform_driver_unregister(&axdrv);
1024}
1025
1026module_init(axdrv_init);
1027module_exit(axdrv_exit);
1028
1029MODULE_DESCRIPTION("AX88796 10/100 Ethernet platform driver");
1030MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>");
1031MODULE_LICENSE("GPL v2");
Kay Sievers72abb462008-04-18 13:50:44 -07001032MODULE_ALIAS("platform:ax88796");