Commit | Line | Data |
---|---|---|
825a2ff1 BD |
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> | |
89e536a1 | 27 | #include <linux/eeprom_93cx6.h> |
825a2ff1 BD |
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_tx_timeout ax_ei_tx_timeout | |
41 | #define __ei_interrupt ax_ei_interrupt | |
42 | #define ____alloc_ei_netdev ax__alloc_ei_netdev | |
43 | #define __NS8390_init ax_NS8390_init | |
44 | ||
45 | /* force unsigned long back to 'void __iomem *' */ | |
46 | #define ax_convert_addr(_a) ((void __force __iomem *)(_a)) | |
47 | ||
48 | #define ei_inb(_a) readb(ax_convert_addr(_a)) | |
49 | #define ei_outb(_v, _a) writeb(_v, ax_convert_addr(_a)) | |
50 | ||
51 | #define ei_inb_p(_a) ei_inb(_a) | |
52 | #define ei_outb_p(_v, _a) ei_outb(_v, _a) | |
53 | ||
54 | /* define EI_SHIFT() to take into account our register offsets */ | |
55 | #define EI_SHIFT(x) (ei_local->reg_offset[(x)]) | |
56 | ||
57 | /* Ensure we have our RCR base value */ | |
58 | #define AX88796_PLATFORM | |
59 | ||
60 | static unsigned char version[] = "ax88796.c: Copyright 2005,2007 Simtec Electronics\n"; | |
61 | ||
62 | #include "lib8390.c" | |
63 | ||
64 | #define DRV_NAME "ax88796" | |
65 | #define DRV_VERSION "1.00" | |
66 | ||
67 | /* from ne.c */ | |
68 | #define NE_CMD EI_SHIFT(0x00) | |
69 | #define NE_RESET EI_SHIFT(0x1f) | |
70 | #define NE_DATAPORT EI_SHIFT(0x10) | |
71 | ||
72 | #define NE1SM_START_PG 0x20 /* First page of TX buffer */ | |
73 | #define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */ | |
74 | #define NESM_START_PG 0x40 /* First page of TX buffer */ | |
75 | #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */ | |
76 | ||
77 | /* device private data */ | |
78 | ||
79 | struct ax_device { | |
80 | struct timer_list mii_timer; | |
81 | spinlock_t mii_lock; | |
82 | struct mii_if_info mii; | |
83 | ||
84 | u32 msg_enable; | |
85 | void __iomem *map2; | |
86 | struct platform_device *dev; | |
87 | struct resource *mem; | |
88 | struct resource *mem2; | |
89 | struct ax_plat_data *plat; | |
90 | ||
91 | unsigned char running; | |
92 | unsigned char resume_open; | |
93 | ||
94 | u32 reg_offsets[0x20]; | |
95 | }; | |
96 | ||
97 | static inline struct ax_device *to_ax_dev(struct net_device *dev) | |
98 | { | |
99 | struct ei_device *ei_local = netdev_priv(dev); | |
100 | return (struct ax_device *)(ei_local+1); | |
101 | } | |
102 | ||
103 | /* ax_initial_check | |
104 | * | |
105 | * do an initial probe for the card to check wether it exists | |
106 | * and is functional | |
107 | */ | |
108 | ||
109 | static int ax_initial_check(struct net_device *dev) | |
110 | { | |
111 | struct ei_device *ei_local = netdev_priv(dev); | |
112 | void __iomem *ioaddr = ei_local->mem; | |
113 | int reg0; | |
114 | int regd; | |
115 | ||
116 | reg0 = ei_inb(ioaddr); | |
117 | if (reg0 == 0xFF) | |
118 | return -ENODEV; | |
119 | ||
120 | ei_outb(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD); | |
121 | regd = ei_inb(ioaddr + 0x0d); | |
122 | ei_outb(0xff, ioaddr + 0x0d); | |
123 | ei_outb(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD); | |
124 | ei_inb(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */ | |
125 | if (ei_inb(ioaddr + EN0_COUNTER0) != 0) { | |
126 | ei_outb(reg0, ioaddr); | |
127 | ei_outb(regd, ioaddr + 0x0d); /* Restore the old values. */ | |
128 | return -ENODEV; | |
129 | } | |
130 | ||
131 | return 0; | |
132 | } | |
133 | ||
134 | /* Hard reset the card. This used to pause for the same period that a | |
135 | 8390 reset command required, but that shouldn't be necessary. */ | |
136 | ||
137 | static void ax_reset_8390(struct net_device *dev) | |
138 | { | |
139 | struct ei_device *ei_local = netdev_priv(dev); | |
140 | unsigned long reset_start_time = jiffies; | |
141 | void __iomem *addr = (void __iomem *)dev->base_addr; | |
142 | ||
143 | if (ei_debug > 1) | |
144 | printk(KERN_DEBUG "resetting the 8390 t=%ld...", jiffies); | |
145 | ||
146 | ei_outb(ei_inb(addr + NE_RESET), addr + NE_RESET); | |
147 | ||
148 | ei_status.txing = 0; | |
149 | ei_status.dmaing = 0; | |
150 | ||
151 | /* This check _should_not_ be necessary, omit eventually. */ | |
152 | while ((ei_inb(addr + EN0_ISR) & ENISR_RESET) == 0) { | |
153 | if (jiffies - reset_start_time > 2*HZ/100) { | |
154 | printk(KERN_WARNING "%s: %s did not complete.\n", | |
155 | __FUNCTION__, dev->name); | |
156 | break; | |
157 | } | |
158 | } | |
159 | ||
160 | ei_outb(ENISR_RESET, addr + EN0_ISR); /* Ack intr. */ | |
161 | } | |
162 | ||
163 | ||
164 | static void ax_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, | |
165 | int ring_page) | |
166 | { | |
167 | struct ei_device *ei_local = netdev_priv(dev); | |
168 | void __iomem *nic_base = ei_local->mem; | |
169 | ||
170 | /* This *shouldn't* happen. If it does, it's the last thing you'll see */ | |
171 | if (ei_status.dmaing) { | |
172 | printk(KERN_EMERG "%s: DMAing conflict in %s [DMAstat:%d][irqlock:%d].\n", | |
173 | dev->name, __FUNCTION__, | |
174 | ei_status.dmaing, ei_status.irqlock); | |
175 | return; | |
176 | } | |
177 | ||
178 | ei_status.dmaing |= 0x01; | |
179 | ei_outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD); | |
180 | ei_outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO); | |
181 | ei_outb(0, nic_base + EN0_RCNTHI); | |
182 | ei_outb(0, nic_base + EN0_RSARLO); /* On page boundary */ | |
183 | ei_outb(ring_page, nic_base + EN0_RSARHI); | |
184 | ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); | |
185 | ||
186 | if (ei_status.word16) | |
187 | readsw(nic_base + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1); | |
188 | else | |
189 | readsb(nic_base + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)); | |
190 | ||
191 | ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ | |
192 | ei_status.dmaing &= ~0x01; | |
193 | ||
194 | le16_to_cpus(&hdr->count); | |
195 | } | |
196 | ||
197 | ||
198 | /* Block input and output, similar to the Crynwr packet driver. If you | |
199 | are porting to a new ethercard, look at the packet driver source for hints. | |
200 | The NEx000 doesn't share the on-board packet memory -- you have to put | |
201 | the packet out through the "remote DMA" dataport using ei_outb. */ | |
202 | ||
203 | static void ax_block_input(struct net_device *dev, int count, | |
204 | struct sk_buff *skb, int ring_offset) | |
205 | { | |
206 | struct ei_device *ei_local = netdev_priv(dev); | |
207 | void __iomem *nic_base = ei_local->mem; | |
208 | char *buf = skb->data; | |
209 | ||
210 | if (ei_status.dmaing) { | |
211 | printk(KERN_EMERG "%s: DMAing conflict in ax_block_input " | |
212 | "[DMAstat:%d][irqlock:%d].\n", | |
213 | dev->name, ei_status.dmaing, ei_status.irqlock); | |
214 | return; | |
215 | } | |
216 | ||
217 | ei_status.dmaing |= 0x01; | |
218 | ||
219 | ei_outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD); | |
220 | ei_outb(count & 0xff, nic_base + EN0_RCNTLO); | |
221 | ei_outb(count >> 8, nic_base + EN0_RCNTHI); | |
222 | ei_outb(ring_offset & 0xff, nic_base + EN0_RSARLO); | |
223 | ei_outb(ring_offset >> 8, nic_base + EN0_RSARHI); | |
224 | ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); | |
225 | ||
226 | if (ei_status.word16) { | |
227 | readsw(nic_base + NE_DATAPORT, buf, count >> 1); | |
228 | if (count & 0x01) | |
229 | buf[count-1] = ei_inb(nic_base + NE_DATAPORT); | |
230 | ||
231 | } else { | |
232 | readsb(nic_base + NE_DATAPORT, buf, count); | |
233 | } | |
234 | ||
235 | ei_status.dmaing &= ~1; | |
236 | } | |
237 | ||
238 | static void ax_block_output(struct net_device *dev, int count, | |
239 | const unsigned char *buf, const int start_page) | |
240 | { | |
241 | struct ei_device *ei_local = netdev_priv(dev); | |
242 | void __iomem *nic_base = ei_local->mem; | |
243 | unsigned long dma_start; | |
244 | ||
245 | /* Round the count up for word writes. Do we need to do this? | |
246 | What effect will an odd byte count have on the 8390? | |
247 | I should check someday. */ | |
248 | ||
249 | if (ei_status.word16 && (count & 0x01)) | |
250 | count++; | |
251 | ||
252 | /* This *shouldn't* happen. If it does, it's the last thing you'll see */ | |
253 | if (ei_status.dmaing) { | |
254 | printk(KERN_EMERG "%s: DMAing conflict in %s." | |
255 | "[DMAstat:%d][irqlock:%d]\n", | |
256 | dev->name, __FUNCTION__, | |
257 | ei_status.dmaing, ei_status.irqlock); | |
258 | return; | |
259 | } | |
260 | ||
261 | ei_status.dmaing |= 0x01; | |
262 | /* We should already be in page 0, but to be safe... */ | |
263 | ei_outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD); | |
264 | ||
265 | ei_outb(ENISR_RDC, nic_base + EN0_ISR); | |
266 | ||
267 | /* Now the normal output. */ | |
268 | ei_outb(count & 0xff, nic_base + EN0_RCNTLO); | |
269 | ei_outb(count >> 8, nic_base + EN0_RCNTHI); | |
270 | ei_outb(0x00, nic_base + EN0_RSARLO); | |
271 | ei_outb(start_page, nic_base + EN0_RSARHI); | |
272 | ||
273 | ei_outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD); | |
274 | if (ei_status.word16) { | |
275 | writesw(nic_base + NE_DATAPORT, buf, count>>1); | |
276 | } else { | |
277 | writesb(nic_base + NE_DATAPORT, buf, count); | |
278 | } | |
279 | ||
280 | dma_start = jiffies; | |
281 | ||
282 | while ((ei_inb(nic_base + EN0_ISR) & ENISR_RDC) == 0) { | |
283 | if (jiffies - dma_start > 2*HZ/100) { /* 20ms */ | |
284 | printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name); | |
285 | ax_reset_8390(dev); | |
286 | ax_NS8390_init(dev,1); | |
287 | break; | |
288 | } | |
289 | } | |
290 | ||
291 | ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ | |
292 | ei_status.dmaing &= ~0x01; | |
293 | return; | |
294 | } | |
295 | ||
296 | /* definitions for accessing MII/EEPROM interface */ | |
297 | ||
298 | #define AX_MEMR EI_SHIFT(0x14) | |
299 | #define AX_MEMR_MDC (1<<0) | |
300 | #define AX_MEMR_MDIR (1<<1) | |
301 | #define AX_MEMR_MDI (1<<2) | |
302 | #define AX_MEMR_MDO (1<<3) | |
303 | #define AX_MEMR_EECS (1<<4) | |
304 | #define AX_MEMR_EEI (1<<5) | |
305 | #define AX_MEMR_EEO (1<<6) | |
306 | #define AX_MEMR_EECLK (1<<7) | |
307 | ||
308 | /* ax_mii_ei_outbits | |
309 | * | |
310 | * write the specified set of bits to the phy | |
311 | */ | |
312 | ||
313 | static void | |
314 | ax_mii_ei_outbits(struct net_device *dev, unsigned int bits, int len) | |
315 | { | |
316 | struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); | |
317 | void __iomem *memr_addr = (void __iomem *)dev->base_addr + AX_MEMR; | |
318 | unsigned int memr; | |
319 | ||
320 | /* clock low, data to output mode */ | |
321 | memr = ei_inb(memr_addr); | |
322 | memr &= ~(AX_MEMR_MDC | AX_MEMR_MDIR); | |
323 | ei_outb(memr, memr_addr); | |
324 | ||
325 | for (len--; len >= 0; len--) { | |
326 | if (bits & (1 << len)) | |
327 | memr |= AX_MEMR_MDO; | |
328 | else | |
329 | memr &= ~AX_MEMR_MDO; | |
330 | ||
331 | ei_outb(memr, memr_addr); | |
332 | ||
333 | /* clock high */ | |
334 | ||
335 | ei_outb(memr | AX_MEMR_MDC, memr_addr); | |
336 | udelay(1); | |
337 | ||
338 | /* clock low */ | |
339 | ei_outb(memr, memr_addr); | |
340 | } | |
341 | ||
342 | /* leaves the clock line low, mdir input */ | |
343 | memr |= AX_MEMR_MDIR; | |
344 | ei_outb(memr, (void __iomem *)dev->base_addr + AX_MEMR); | |
345 | } | |
346 | ||
347 | /* ax_phy_ei_inbits | |
348 | * | |
349 | * read a specified number of bits from the phy | |
350 | */ | |
351 | ||
352 | static unsigned int | |
353 | ax_phy_ei_inbits(struct net_device *dev, int no) | |
354 | { | |
355 | struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); | |
356 | void __iomem *memr_addr = (void __iomem *)dev->base_addr + AX_MEMR; | |
357 | unsigned int memr; | |
358 | unsigned int result = 0; | |
359 | ||
360 | /* clock low, data to input mode */ | |
361 | memr = ei_inb(memr_addr); | |
362 | memr &= ~AX_MEMR_MDC; | |
363 | memr |= AX_MEMR_MDIR; | |
364 | ei_outb(memr, memr_addr); | |
365 | ||
366 | for (no--; no >= 0; no--) { | |
367 | ei_outb(memr | AX_MEMR_MDC, memr_addr); | |
368 | ||
369 | udelay(1); | |
370 | ||
371 | if (ei_inb(memr_addr) & AX_MEMR_MDI) | |
372 | result |= (1<<no); | |
373 | ||
374 | ei_outb(memr, memr_addr); | |
375 | } | |
376 | ||
377 | return result; | |
378 | } | |
379 | ||
380 | /* ax_phy_issueaddr | |
381 | * | |
382 | * use the low level bit shifting routines to send the address | |
383 | * and command to the specified phy | |
384 | */ | |
385 | ||
386 | static void | |
387 | ax_phy_issueaddr(struct net_device *dev, int phy_addr, int reg, int opc) | |
388 | { | |
389 | if (phy_debug) | |
390 | pr_debug("%s: dev %p, %04x, %04x, %d\n", | |
391 | __FUNCTION__, dev, phy_addr, reg, opc); | |
392 | ||
393 | ax_mii_ei_outbits(dev, 0x3f, 6); /* pre-amble */ | |
394 | ax_mii_ei_outbits(dev, 1, 2); /* frame-start */ | |
395 | ax_mii_ei_outbits(dev, opc, 2); /* op code */ | |
396 | ax_mii_ei_outbits(dev, phy_addr, 5); /* phy address */ | |
397 | ax_mii_ei_outbits(dev, reg, 5); /* reg address */ | |
398 | } | |
399 | ||
400 | static int | |
401 | ax_phy_read(struct net_device *dev, int phy_addr, int reg) | |
402 | { | |
403 | struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); | |
404 | unsigned long flags; | |
405 | unsigned int result; | |
406 | ||
407 | spin_lock_irqsave(&ei_local->page_lock, flags); | |
408 | ||
409 | ax_phy_issueaddr(dev, phy_addr, reg, 2); | |
410 | ||
411 | result = ax_phy_ei_inbits(dev, 17); | |
412 | result &= ~(3<<16); | |
413 | ||
414 | spin_unlock_irqrestore(&ei_local->page_lock, flags); | |
415 | ||
416 | if (phy_debug) | |
417 | pr_debug("%s: %04x.%04x => read %04x\n", __FUNCTION__, | |
418 | phy_addr, reg, result); | |
419 | ||
420 | return result; | |
421 | } | |
422 | ||
423 | static void | |
424 | ax_phy_write(struct net_device *dev, int phy_addr, int reg, int value) | |
425 | { | |
426 | struct ei_device *ei = (struct ei_device *) netdev_priv(dev); | |
427 | unsigned long flags; | |
428 | ||
429 | printk(KERN_DEBUG "%s: %p, %04x, %04x %04x\n", | |
430 | __FUNCTION__, dev, phy_addr, reg, value); | |
431 | ||
432 | spin_lock_irqsave(&ei->page_lock, flags); | |
433 | ||
434 | ax_phy_issueaddr(dev, phy_addr, reg, 1); | |
435 | ax_mii_ei_outbits(dev, 2, 2); /* send TA */ | |
436 | ax_mii_ei_outbits(dev, value, 16); | |
437 | ||
438 | spin_unlock_irqrestore(&ei->page_lock, flags); | |
439 | } | |
440 | ||
441 | static void ax_mii_expiry(unsigned long data) | |
442 | { | |
443 | struct net_device *dev = (struct net_device *)data; | |
444 | struct ax_device *ax = to_ax_dev(dev); | |
445 | unsigned long flags; | |
446 | ||
447 | spin_lock_irqsave(&ax->mii_lock, flags); | |
448 | mii_check_media(&ax->mii, netif_msg_link(ax), 0); | |
449 | spin_unlock_irqrestore(&ax->mii_lock, flags); | |
450 | ||
451 | if (ax->running) { | |
452 | ax->mii_timer.expires = jiffies + HZ*2; | |
453 | add_timer(&ax->mii_timer); | |
454 | } | |
455 | } | |
456 | ||
457 | static int ax_open(struct net_device *dev) | |
458 | { | |
459 | struct ax_device *ax = to_ax_dev(dev); | |
460 | struct ei_device *ei_local = netdev_priv(dev); | |
461 | int ret; | |
462 | ||
2832e856 | 463 | dev_dbg(&ax->dev->dev, "%s: open\n", dev->name); |
825a2ff1 BD |
464 | |
465 | ret = request_irq(dev->irq, ax_ei_interrupt, 0, dev->name, dev); | |
466 | if (ret) | |
467 | return ret; | |
468 | ||
469 | ret = ax_ei_open(dev); | |
470 | if (ret) | |
471 | return ret; | |
472 | ||
473 | /* turn the phy on (if turned off) */ | |
474 | ||
475 | ei_outb(ax->plat->gpoc_val, ei_local->mem + EI_SHIFT(0x17)); | |
476 | ax->running = 1; | |
477 | ||
478 | /* start the MII timer */ | |
479 | ||
480 | init_timer(&ax->mii_timer); | |
481 | ||
482 | ax->mii_timer.expires = jiffies+1; | |
483 | ax->mii_timer.data = (unsigned long) dev; | |
484 | ax->mii_timer.function = ax_mii_expiry; | |
485 | ||
486 | add_timer(&ax->mii_timer); | |
487 | ||
488 | return 0; | |
489 | } | |
490 | ||
491 | static int ax_close(struct net_device *dev) | |
492 | { | |
493 | struct ax_device *ax = to_ax_dev(dev); | |
494 | struct ei_device *ei_local = netdev_priv(dev); | |
495 | ||
2832e856 | 496 | dev_dbg(&ax->dev->dev, "%s: close\n", dev->name); |
825a2ff1 BD |
497 | |
498 | /* turn the phy off */ | |
499 | ||
500 | ei_outb(ax->plat->gpoc_val | (1<<6), | |
501 | ei_local->mem + EI_SHIFT(0x17)); | |
502 | ||
503 | ax->running = 0; | |
504 | wmb(); | |
505 | ||
506 | del_timer_sync(&ax->mii_timer); | |
507 | ax_ei_close(dev); | |
508 | ||
509 | free_irq(dev->irq, dev); | |
510 | return 0; | |
511 | } | |
512 | ||
513 | static int ax_ioctl(struct net_device *dev, struct ifreq *req, int cmd) | |
514 | { | |
515 | struct ax_device *ax = to_ax_dev(dev); | |
516 | unsigned long flags; | |
517 | int rc; | |
518 | ||
519 | if (!netif_running(dev)) | |
520 | return -EINVAL; | |
521 | ||
522 | spin_lock_irqsave(&ax->mii_lock, flags); | |
523 | rc = generic_mii_ioctl(&ax->mii, if_mii(req), cmd, NULL); | |
524 | spin_unlock_irqrestore(&ax->mii_lock, flags); | |
525 | ||
526 | return rc; | |
527 | } | |
528 | ||
529 | /* ethtool ops */ | |
530 | ||
531 | static void ax_get_drvinfo(struct net_device *dev, | |
532 | struct ethtool_drvinfo *info) | |
533 | { | |
534 | struct ax_device *ax = to_ax_dev(dev); | |
535 | ||
536 | strcpy(info->driver, DRV_NAME); | |
537 | strcpy(info->version, DRV_VERSION); | |
538 | strcpy(info->bus_info, ax->dev->name); | |
539 | } | |
540 | ||
541 | static int ax_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
542 | { | |
543 | struct ax_device *ax = to_ax_dev(dev); | |
544 | unsigned long flags; | |
545 | ||
546 | spin_lock_irqsave(&ax->mii_lock, flags); | |
547 | mii_ethtool_gset(&ax->mii, cmd); | |
548 | spin_lock_irqsave(&ax->mii_lock, flags); | |
549 | ||
550 | return 0; | |
551 | } | |
552 | ||
553 | static int ax_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
554 | { | |
555 | struct ax_device *ax = to_ax_dev(dev); | |
556 | unsigned long flags; | |
557 | int rc; | |
558 | ||
559 | spin_lock_irqsave(&ax->mii_lock, flags); | |
560 | rc = mii_ethtool_sset(&ax->mii, cmd); | |
561 | spin_lock_irqsave(&ax->mii_lock, flags); | |
562 | ||
563 | return rc; | |
564 | } | |
565 | ||
566 | static int ax_nway_reset(struct net_device *dev) | |
567 | { | |
568 | struct ax_device *ax = to_ax_dev(dev); | |
569 | return mii_nway_restart(&ax->mii); | |
570 | } | |
571 | ||
572 | static u32 ax_get_link(struct net_device *dev) | |
573 | { | |
574 | struct ax_device *ax = to_ax_dev(dev); | |
575 | return mii_link_ok(&ax->mii); | |
576 | } | |
577 | ||
578 | static const struct ethtool_ops ax_ethtool_ops = { | |
579 | .get_drvinfo = ax_get_drvinfo, | |
580 | .get_settings = ax_get_settings, | |
581 | .set_settings = ax_set_settings, | |
582 | .nway_reset = ax_nway_reset, | |
583 | .get_link = ax_get_link, | |
825a2ff1 BD |
584 | }; |
585 | ||
89e536a1 MD |
586 | #ifdef CONFIG_AX88796_93CX6 |
587 | static void ax_eeprom_register_read(struct eeprom_93cx6 *eeprom) | |
588 | { | |
589 | struct ei_device *ei_local = eeprom->data; | |
590 | u8 reg = ei_inb(ei_local->mem + AX_MEMR); | |
591 | ||
592 | eeprom->reg_data_in = reg & AX_MEMR_EEI; | |
593 | eeprom->reg_data_out = reg & AX_MEMR_EEO; /* Input pin */ | |
594 | eeprom->reg_data_clock = reg & AX_MEMR_EECLK; | |
595 | eeprom->reg_chip_select = reg & AX_MEMR_EECS; | |
596 | } | |
597 | ||
598 | static void ax_eeprom_register_write(struct eeprom_93cx6 *eeprom) | |
599 | { | |
600 | struct ei_device *ei_local = eeprom->data; | |
601 | u8 reg = ei_inb(ei_local->mem + AX_MEMR); | |
602 | ||
603 | reg &= ~(AX_MEMR_EEI | AX_MEMR_EECLK | AX_MEMR_EECS); | |
604 | ||
605 | if (eeprom->reg_data_in) | |
606 | reg |= AX_MEMR_EEI; | |
607 | if (eeprom->reg_data_clock) | |
608 | reg |= AX_MEMR_EECLK; | |
609 | if (eeprom->reg_chip_select) | |
610 | reg |= AX_MEMR_EECS; | |
611 | ||
612 | ei_outb(reg, ei_local->mem + AX_MEMR); | |
613 | udelay(10); | |
614 | } | |
615 | #endif | |
616 | ||
825a2ff1 BD |
617 | /* setup code */ |
618 | ||
619 | static void ax_initial_setup(struct net_device *dev, struct ei_device *ei_local) | |
620 | { | |
621 | void __iomem *ioaddr = ei_local->mem; | |
622 | struct ax_device *ax = to_ax_dev(dev); | |
623 | ||
624 | /* Select page 0*/ | |
625 | ei_outb(E8390_NODMA+E8390_PAGE0+E8390_STOP, ioaddr + E8390_CMD); | |
626 | ||
627 | /* set to byte access */ | |
628 | ei_outb(ax->plat->dcr_val & ~1, ioaddr + EN0_DCFG); | |
629 | ei_outb(ax->plat->gpoc_val, ioaddr + EI_SHIFT(0x17)); | |
630 | } | |
631 | ||
632 | /* ax_init_dev | |
633 | * | |
634 | * initialise the specified device, taking care to note the MAC | |
635 | * address it may already have (if configured), ensure | |
636 | * the device is ready to be used by lib8390.c and registerd with | |
637 | * the network layer. | |
638 | */ | |
639 | ||
640 | static int ax_init_dev(struct net_device *dev, int first_init) | |
641 | { | |
642 | struct ei_device *ei_local = netdev_priv(dev); | |
643 | struct ax_device *ax = to_ax_dev(dev); | |
644 | void __iomem *ioaddr = ei_local->mem; | |
645 | unsigned int start_page; | |
646 | unsigned int stop_page; | |
647 | int ret; | |
648 | int i; | |
649 | ||
650 | ret = ax_initial_check(dev); | |
651 | if (ret) | |
652 | goto err_out; | |
653 | ||
654 | /* setup goes here */ | |
655 | ||
656 | ax_initial_setup(dev, ei_local); | |
657 | ||
658 | /* read the mac from the card prom if we need it */ | |
659 | ||
660 | if (first_init && ax->plat->flags & AXFLG_HAS_EEPROM) { | |
661 | unsigned char SA_prom[32]; | |
662 | ||
663 | for(i = 0; i < sizeof(SA_prom); i+=2) { | |
664 | SA_prom[i] = ei_inb(ioaddr + NE_DATAPORT); | |
665 | SA_prom[i+1] = ei_inb(ioaddr + NE_DATAPORT); | |
666 | } | |
667 | ||
668 | if (ax->plat->wordlength == 2) | |
669 | for (i = 0; i < 16; i++) | |
670 | SA_prom[i] = SA_prom[i+i]; | |
671 | ||
672 | memcpy(dev->dev_addr, SA_prom, 6); | |
673 | } | |
674 | ||
89e536a1 MD |
675 | #ifdef CONFIG_AX88796_93CX6 |
676 | if (first_init && ax->plat->flags & AXFLG_HAS_93CX6) { | |
677 | unsigned char mac_addr[6]; | |
678 | struct eeprom_93cx6 eeprom; | |
679 | ||
680 | eeprom.data = ei_local; | |
681 | eeprom.register_read = ax_eeprom_register_read; | |
682 | eeprom.register_write = ax_eeprom_register_write; | |
683 | eeprom.width = PCI_EEPROM_WIDTH_93C56; | |
684 | ||
685 | eeprom_93cx6_multiread(&eeprom, 0, | |
686 | (__le16 __force *)mac_addr, | |
687 | sizeof(mac_addr) >> 1); | |
688 | ||
689 | memcpy(dev->dev_addr, mac_addr, 6); | |
690 | } | |
691 | #endif | |
825a2ff1 BD |
692 | if (ax->plat->wordlength == 2) { |
693 | /* We must set the 8390 for word mode. */ | |
694 | ei_outb(ax->plat->dcr_val, ei_local->mem + EN0_DCFG); | |
695 | start_page = NESM_START_PG; | |
696 | stop_page = NESM_STOP_PG; | |
697 | } else { | |
698 | start_page = NE1SM_START_PG; | |
699 | stop_page = NE1SM_STOP_PG; | |
700 | } | |
701 | ||
702 | /* load the mac-address from the device if this is the | |
703 | * first time we've initialised */ | |
704 | ||
705 | if (first_init && ax->plat->flags & AXFLG_MAC_FROMDEV) { | |
706 | ei_outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP, | |
707 | ei_local->mem + E8390_CMD); /* 0x61 */ | |
708 | ||
709 | for (i = 0 ; i < ETHER_ADDR_LEN ; i++) | |
710 | dev->dev_addr[i] = ei_inb(ioaddr + EN1_PHYS_SHIFT(i)); | |
711 | } | |
712 | ||
713 | ax_reset_8390(dev); | |
714 | ||
715 | ei_status.name = "AX88796"; | |
716 | ei_status.tx_start_page = start_page; | |
717 | ei_status.stop_page = stop_page; | |
718 | ei_status.word16 = (ax->plat->wordlength == 2); | |
719 | ei_status.rx_start_page = start_page + TX_PAGES; | |
720 | ||
721 | #ifdef PACKETBUF_MEMSIZE | |
722 | /* Allow the packet buffer size to be overridden by know-it-alls. */ | |
723 | ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE; | |
724 | #endif | |
725 | ||
726 | ei_status.reset_8390 = &ax_reset_8390; | |
727 | ei_status.block_input = &ax_block_input; | |
728 | ei_status.block_output = &ax_block_output; | |
729 | ei_status.get_8390_hdr = &ax_get_8390_hdr; | |
730 | ei_status.priv = 0; | |
731 | ||
732 | dev->open = ax_open; | |
733 | dev->stop = ax_close; | |
734 | dev->do_ioctl = ax_ioctl; | |
735 | dev->ethtool_ops = &ax_ethtool_ops; | |
736 | ||
737 | ax->msg_enable = NETIF_MSG_LINK; | |
738 | ax->mii.phy_id_mask = 0x1f; | |
739 | ax->mii.reg_num_mask = 0x1f; | |
740 | ax->mii.phy_id = 0x10; /* onboard phy */ | |
741 | ax->mii.force_media = 0; | |
742 | ax->mii.full_duplex = 0; | |
743 | ax->mii.mdio_read = ax_phy_read; | |
744 | ax->mii.mdio_write = ax_phy_write; | |
745 | ax->mii.dev = dev; | |
746 | ||
747 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
748 | dev->poll_controller = ax_ei_poll; | |
749 | #endif | |
750 | ax_NS8390_init(dev, 0); | |
751 | ||
752 | if (first_init) { | |
753 | printk("AX88796: %dbit, irq %d, %lx, MAC: ", | |
754 | ei_status.word16 ? 16:8, dev->irq, dev->base_addr); | |
755 | ||
756 | for (i = 0; i < ETHER_ADDR_LEN; i++) | |
757 | printk("%2.2x%c", dev->dev_addr[i], | |
758 | (i < (ETHER_ADDR_LEN-1) ? ':' : ' ')); | |
759 | ||
760 | printk("\n"); | |
761 | } | |
762 | ||
763 | ret = register_netdev(dev); | |
764 | if (ret) | |
765 | goto out_irq; | |
766 | ||
767 | return 0; | |
768 | ||
769 | out_irq: | |
770 | /* cleanup irq */ | |
771 | free_irq(dev->irq, dev); | |
772 | err_out: | |
773 | return ret; | |
774 | } | |
775 | ||
776 | static int ax_remove(struct platform_device *_dev) | |
777 | { | |
778 | struct net_device *dev = platform_get_drvdata(_dev); | |
779 | struct ax_device *ax; | |
780 | ||
781 | ax = to_ax_dev(dev); | |
782 | ||
783 | unregister_netdev(dev); | |
784 | free_irq(dev->irq, dev); | |
785 | ||
786 | iounmap(ei_status.mem); | |
787 | release_resource(ax->mem); | |
788 | kfree(ax->mem); | |
789 | ||
790 | if (ax->map2) { | |
791 | iounmap(ax->map2); | |
792 | release_resource(ax->mem2); | |
793 | kfree(ax->mem2); | |
794 | } | |
795 | ||
796 | free_netdev(dev); | |
797 | ||
798 | return 0; | |
799 | } | |
800 | ||
801 | /* ax_probe | |
802 | * | |
803 | * This is the entry point when the platform device system uses to | |
804 | * notify us of a new device to attach to. Allocate memory, find | |
805 | * the resources and information passed, and map the necessary registers. | |
806 | */ | |
807 | ||
808 | static int ax_probe(struct platform_device *pdev) | |
809 | { | |
810 | struct net_device *dev; | |
811 | struct ax_device *ax; | |
812 | struct resource *res; | |
813 | size_t size; | |
814 | int ret; | |
815 | ||
816 | dev = ax__alloc_ei_netdev(sizeof(struct ax_device)); | |
817 | if (dev == NULL) | |
818 | return -ENOMEM; | |
819 | ||
820 | /* ok, let's setup our device */ | |
821 | ax = to_ax_dev(dev); | |
822 | ||
823 | memset(ax, 0, sizeof(struct ax_device)); | |
824 | ||
825 | spin_lock_init(&ax->mii_lock); | |
826 | ||
827 | ax->dev = pdev; | |
828 | ax->plat = pdev->dev.platform_data; | |
829 | platform_set_drvdata(pdev, dev); | |
830 | ||
831 | ei_status.rxcr_base = ax->plat->rcr_val; | |
832 | ||
833 | /* find the platform resources */ | |
834 | ||
835 | dev->irq = platform_get_irq(pdev, 0); | |
836 | if (dev->irq < 0) { | |
837 | dev_err(&pdev->dev, "no IRQ specified\n"); | |
838 | ret = -ENXIO; | |
839 | goto exit_mem; | |
840 | } | |
841 | ||
842 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
843 | if (res == NULL) { | |
844 | dev_err(&pdev->dev, "no MEM specified\n"); | |
845 | ret = -ENXIO; | |
846 | goto exit_mem; | |
847 | } | |
848 | ||
849 | size = (res->end - res->start) + 1; | |
850 | ||
851 | /* setup the register offsets from either the platform data | |
852 | * or by using the size of the resource provided */ | |
853 | ||
854 | if (ax->plat->reg_offsets) | |
855 | ei_status.reg_offset = ax->plat->reg_offsets; | |
856 | else { | |
857 | ei_status.reg_offset = ax->reg_offsets; | |
858 | for (ret = 0; ret < 0x18; ret++) | |
859 | ax->reg_offsets[ret] = (size / 0x18) * ret; | |
860 | } | |
861 | ||
862 | ax->mem = request_mem_region(res->start, size, pdev->name); | |
863 | if (ax->mem == NULL) { | |
864 | dev_err(&pdev->dev, "cannot reserve registers\n"); | |
865 | ret = -ENXIO; | |
866 | goto exit_mem; | |
867 | } | |
868 | ||
869 | ei_status.mem = ioremap(res->start, size); | |
c7b17cb1 | 870 | dev->base_addr = (unsigned long)ei_status.mem; |
825a2ff1 BD |
871 | |
872 | if (ei_status.mem == NULL) { | |
b4efe22c AM |
873 | dev_err(&pdev->dev, "Cannot ioremap area (%08llx,%08llx)\n", |
874 | (unsigned long long)res->start, | |
875 | (unsigned long long)res->end); | |
825a2ff1 BD |
876 | |
877 | ret = -ENXIO; | |
878 | goto exit_req; | |
879 | } | |
880 | ||
881 | /* look for reset area */ | |
882 | ||
883 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
884 | if (res == NULL) { | |
885 | if (!ax->plat->reg_offsets) { | |
886 | for (ret = 0; ret < 0x20; ret++) | |
887 | ax->reg_offsets[ret] = (size / 0x20) * ret; | |
888 | } | |
889 | ||
890 | ax->map2 = NULL; | |
891 | } else { | |
892 | size = (res->end - res->start) + 1; | |
893 | ||
894 | ax->mem2 = request_mem_region(res->start, size, pdev->name); | |
895 | if (ax->mem == NULL) { | |
896 | dev_err(&pdev->dev, "cannot reserve registers\n"); | |
897 | ret = -ENXIO; | |
898 | goto exit_mem1; | |
899 | } | |
900 | ||
901 | ax->map2 = ioremap(res->start, size); | |
902 | if (ax->map2 == NULL) { | |
898eb71c | 903 | dev_err(&pdev->dev, "cannot map reset register\n"); |
825a2ff1 BD |
904 | ret = -ENXIO; |
905 | goto exit_mem2; | |
906 | } | |
907 | ||
908 | ei_status.reg_offset[0x1f] = ax->map2 - ei_status.mem; | |
909 | } | |
910 | ||
911 | /* got resources, now initialise and register device */ | |
912 | ||
913 | ret = ax_init_dev(dev, 1); | |
914 | if (!ret) | |
915 | return 0; | |
916 | ||
917 | if (ax->map2 == NULL) | |
918 | goto exit_mem1; | |
919 | ||
920 | iounmap(ax->map2); | |
921 | ||
922 | exit_mem2: | |
923 | release_resource(ax->mem2); | |
924 | kfree(ax->mem2); | |
925 | ||
926 | exit_mem1: | |
927 | iounmap(ei_status.mem); | |
928 | ||
929 | exit_req: | |
930 | release_resource(ax->mem); | |
931 | kfree(ax->mem); | |
932 | ||
933 | exit_mem: | |
934 | free_netdev(dev); | |
935 | ||
936 | return ret; | |
937 | } | |
938 | ||
939 | /* suspend and resume */ | |
940 | ||
941 | #ifdef CONFIG_PM | |
942 | static int ax_suspend(struct platform_device *dev, pm_message_t state) | |
943 | { | |
944 | struct net_device *ndev = platform_get_drvdata(dev); | |
945 | struct ax_device *ax = to_ax_dev(ndev); | |
946 | ||
947 | ax->resume_open = ax->running; | |
948 | ||
949 | netif_device_detach(ndev); | |
950 | ax_close(ndev); | |
951 | ||
952 | return 0; | |
953 | } | |
954 | ||
955 | static int ax_resume(struct platform_device *pdev) | |
956 | { | |
957 | struct net_device *ndev = platform_get_drvdata(pdev); | |
958 | struct ax_device *ax = to_ax_dev(ndev); | |
959 | ||
960 | ax_initial_setup(ndev, netdev_priv(ndev)); | |
961 | ax_NS8390_init(ndev, ax->resume_open); | |
962 | netif_device_attach(ndev); | |
963 | ||
964 | if (ax->resume_open) | |
965 | ax_open(ndev); | |
966 | ||
967 | return 0; | |
968 | } | |
969 | ||
970 | #else | |
971 | #define ax_suspend NULL | |
972 | #define ax_resume NULL | |
973 | #endif | |
974 | ||
975 | static struct platform_driver axdrv = { | |
976 | .driver = { | |
977 | .name = "ax88796", | |
978 | .owner = THIS_MODULE, | |
979 | }, | |
980 | .probe = ax_probe, | |
981 | .remove = ax_remove, | |
982 | .suspend = ax_suspend, | |
983 | .resume = ax_resume, | |
984 | }; | |
985 | ||
986 | static int __init axdrv_init(void) | |
987 | { | |
988 | return platform_driver_register(&axdrv); | |
989 | } | |
990 | ||
991 | static void __exit axdrv_exit(void) | |
992 | { | |
993 | platform_driver_unregister(&axdrv); | |
994 | } | |
995 | ||
996 | module_init(axdrv_init); | |
997 | module_exit(axdrv_exit); | |
998 | ||
999 | MODULE_DESCRIPTION("AX88796 10/100 Ethernet platform driver"); | |
1000 | MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>"); | |
1001 | MODULE_LICENSE("GPL v2"); |