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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 | ||
28 | #include <net/ax88796.h> | |
29 | ||
30 | #include <asm/system.h> | |
31 | #include <asm/io.h> | |
32 | ||
33 | static int phy_debug = 0; | |
34 | ||
35 | /* Rename the lib8390.c functions to show that they are in this driver */ | |
36 | #define __ei_open ax_ei_open | |
37 | #define __ei_close ax_ei_close | |
38 | #define __ei_poll ax_ei_poll | |
39 | #define __ei_tx_timeout ax_ei_tx_timeout | |
40 | #define __ei_interrupt ax_ei_interrupt | |
41 | #define ____alloc_ei_netdev ax__alloc_ei_netdev | |
42 | #define __NS8390_init ax_NS8390_init | |
43 | ||
44 | /* force unsigned long back to 'void __iomem *' */ | |
45 | #define ax_convert_addr(_a) ((void __force __iomem *)(_a)) | |
46 | ||
47 | #define ei_inb(_a) readb(ax_convert_addr(_a)) | |
48 | #define ei_outb(_v, _a) writeb(_v, ax_convert_addr(_a)) | |
49 | ||
50 | #define ei_inb_p(_a) ei_inb(_a) | |
51 | #define ei_outb_p(_v, _a) ei_outb(_v, _a) | |
52 | ||
53 | /* define EI_SHIFT() to take into account our register offsets */ | |
54 | #define EI_SHIFT(x) (ei_local->reg_offset[(x)]) | |
55 | ||
56 | /* Ensure we have our RCR base value */ | |
57 | #define AX88796_PLATFORM | |
58 | ||
59 | static unsigned char version[] = "ax88796.c: Copyright 2005,2007 Simtec Electronics\n"; | |
60 | ||
61 | #include "lib8390.c" | |
62 | ||
63 | #define DRV_NAME "ax88796" | |
64 | #define DRV_VERSION "1.00" | |
65 | ||
66 | /* from ne.c */ | |
67 | #define NE_CMD EI_SHIFT(0x00) | |
68 | #define NE_RESET EI_SHIFT(0x1f) | |
69 | #define NE_DATAPORT EI_SHIFT(0x10) | |
70 | ||
71 | #define NE1SM_START_PG 0x20 /* First page of TX buffer */ | |
72 | #define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */ | |
73 | #define NESM_START_PG 0x40 /* First page of TX buffer */ | |
74 | #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */ | |
75 | ||
76 | /* device private data */ | |
77 | ||
78 | struct ax_device { | |
79 | struct timer_list mii_timer; | |
80 | spinlock_t mii_lock; | |
81 | struct mii_if_info mii; | |
82 | ||
83 | u32 msg_enable; | |
84 | void __iomem *map2; | |
85 | struct platform_device *dev; | |
86 | struct resource *mem; | |
87 | struct resource *mem2; | |
88 | struct ax_plat_data *plat; | |
89 | ||
90 | unsigned char running; | |
91 | unsigned char resume_open; | |
92 | ||
93 | u32 reg_offsets[0x20]; | |
94 | }; | |
95 | ||
96 | static inline struct ax_device *to_ax_dev(struct net_device *dev) | |
97 | { | |
98 | struct ei_device *ei_local = netdev_priv(dev); | |
99 | return (struct ax_device *)(ei_local+1); | |
100 | } | |
101 | ||
102 | /* ax_initial_check | |
103 | * | |
104 | * do an initial probe for the card to check wether it exists | |
105 | * and is functional | |
106 | */ | |
107 | ||
108 | static int ax_initial_check(struct net_device *dev) | |
109 | { | |
110 | struct ei_device *ei_local = netdev_priv(dev); | |
111 | void __iomem *ioaddr = ei_local->mem; | |
112 | int reg0; | |
113 | int regd; | |
114 | ||
115 | reg0 = ei_inb(ioaddr); | |
116 | if (reg0 == 0xFF) | |
117 | return -ENODEV; | |
118 | ||
119 | ei_outb(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD); | |
120 | regd = ei_inb(ioaddr + 0x0d); | |
121 | ei_outb(0xff, ioaddr + 0x0d); | |
122 | ei_outb(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD); | |
123 | ei_inb(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */ | |
124 | if (ei_inb(ioaddr + EN0_COUNTER0) != 0) { | |
125 | ei_outb(reg0, ioaddr); | |
126 | ei_outb(regd, ioaddr + 0x0d); /* Restore the old values. */ | |
127 | return -ENODEV; | |
128 | } | |
129 | ||
130 | return 0; | |
131 | } | |
132 | ||
133 | /* Hard reset the card. This used to pause for the same period that a | |
134 | 8390 reset command required, but that shouldn't be necessary. */ | |
135 | ||
136 | static void ax_reset_8390(struct net_device *dev) | |
137 | { | |
138 | struct ei_device *ei_local = netdev_priv(dev); | |
139 | unsigned long reset_start_time = jiffies; | |
140 | void __iomem *addr = (void __iomem *)dev->base_addr; | |
141 | ||
142 | if (ei_debug > 1) | |
143 | printk(KERN_DEBUG "resetting the 8390 t=%ld...", jiffies); | |
144 | ||
145 | ei_outb(ei_inb(addr + NE_RESET), addr + NE_RESET); | |
146 | ||
147 | ei_status.txing = 0; | |
148 | ei_status.dmaing = 0; | |
149 | ||
150 | /* This check _should_not_ be necessary, omit eventually. */ | |
151 | while ((ei_inb(addr + EN0_ISR) & ENISR_RESET) == 0) { | |
152 | if (jiffies - reset_start_time > 2*HZ/100) { | |
153 | printk(KERN_WARNING "%s: %s did not complete.\n", | |
154 | __FUNCTION__, dev->name); | |
155 | break; | |
156 | } | |
157 | } | |
158 | ||
159 | ei_outb(ENISR_RESET, addr + EN0_ISR); /* Ack intr. */ | |
160 | } | |
161 | ||
162 | ||
163 | static void ax_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, | |
164 | int ring_page) | |
165 | { | |
166 | struct ei_device *ei_local = netdev_priv(dev); | |
167 | void __iomem *nic_base = ei_local->mem; | |
168 | ||
169 | /* This *shouldn't* happen. If it does, it's the last thing you'll see */ | |
170 | if (ei_status.dmaing) { | |
171 | printk(KERN_EMERG "%s: DMAing conflict in %s [DMAstat:%d][irqlock:%d].\n", | |
172 | dev->name, __FUNCTION__, | |
173 | ei_status.dmaing, ei_status.irqlock); | |
174 | return; | |
175 | } | |
176 | ||
177 | ei_status.dmaing |= 0x01; | |
178 | ei_outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD); | |
179 | ei_outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO); | |
180 | ei_outb(0, nic_base + EN0_RCNTHI); | |
181 | ei_outb(0, nic_base + EN0_RSARLO); /* On page boundary */ | |
182 | ei_outb(ring_page, nic_base + EN0_RSARHI); | |
183 | ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); | |
184 | ||
185 | if (ei_status.word16) | |
186 | readsw(nic_base + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1); | |
187 | else | |
188 | readsb(nic_base + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)); | |
189 | ||
190 | ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ | |
191 | ei_status.dmaing &= ~0x01; | |
192 | ||
193 | le16_to_cpus(&hdr->count); | |
194 | } | |
195 | ||
196 | ||
197 | /* Block input and output, similar to the Crynwr packet driver. If you | |
198 | are porting to a new ethercard, look at the packet driver source for hints. | |
199 | The NEx000 doesn't share the on-board packet memory -- you have to put | |
200 | the packet out through the "remote DMA" dataport using ei_outb. */ | |
201 | ||
202 | static void ax_block_input(struct net_device *dev, int count, | |
203 | struct sk_buff *skb, int ring_offset) | |
204 | { | |
205 | struct ei_device *ei_local = netdev_priv(dev); | |
206 | void __iomem *nic_base = ei_local->mem; | |
207 | char *buf = skb->data; | |
208 | ||
209 | if (ei_status.dmaing) { | |
210 | printk(KERN_EMERG "%s: DMAing conflict in ax_block_input " | |
211 | "[DMAstat:%d][irqlock:%d].\n", | |
212 | dev->name, ei_status.dmaing, ei_status.irqlock); | |
213 | return; | |
214 | } | |
215 | ||
216 | ei_status.dmaing |= 0x01; | |
217 | ||
218 | ei_outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD); | |
219 | ei_outb(count & 0xff, nic_base + EN0_RCNTLO); | |
220 | ei_outb(count >> 8, nic_base + EN0_RCNTHI); | |
221 | ei_outb(ring_offset & 0xff, nic_base + EN0_RSARLO); | |
222 | ei_outb(ring_offset >> 8, nic_base + EN0_RSARHI); | |
223 | ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); | |
224 | ||
225 | if (ei_status.word16) { | |
226 | readsw(nic_base + NE_DATAPORT, buf, count >> 1); | |
227 | if (count & 0x01) | |
228 | buf[count-1] = ei_inb(nic_base + NE_DATAPORT); | |
229 | ||
230 | } else { | |
231 | readsb(nic_base + NE_DATAPORT, buf, count); | |
232 | } | |
233 | ||
234 | ei_status.dmaing &= ~1; | |
235 | } | |
236 | ||
237 | static void ax_block_output(struct net_device *dev, int count, | |
238 | const unsigned char *buf, const int start_page) | |
239 | { | |
240 | struct ei_device *ei_local = netdev_priv(dev); | |
241 | void __iomem *nic_base = ei_local->mem; | |
242 | unsigned long dma_start; | |
243 | ||
244 | /* Round the count up for word writes. Do we need to do this? | |
245 | What effect will an odd byte count have on the 8390? | |
246 | I should check someday. */ | |
247 | ||
248 | if (ei_status.word16 && (count & 0x01)) | |
249 | count++; | |
250 | ||
251 | /* This *shouldn't* happen. If it does, it's the last thing you'll see */ | |
252 | if (ei_status.dmaing) { | |
253 | printk(KERN_EMERG "%s: DMAing conflict in %s." | |
254 | "[DMAstat:%d][irqlock:%d]\n", | |
255 | dev->name, __FUNCTION__, | |
256 | ei_status.dmaing, ei_status.irqlock); | |
257 | return; | |
258 | } | |
259 | ||
260 | ei_status.dmaing |= 0x01; | |
261 | /* We should already be in page 0, but to be safe... */ | |
262 | ei_outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD); | |
263 | ||
264 | ei_outb(ENISR_RDC, nic_base + EN0_ISR); | |
265 | ||
266 | /* Now the normal output. */ | |
267 | ei_outb(count & 0xff, nic_base + EN0_RCNTLO); | |
268 | ei_outb(count >> 8, nic_base + EN0_RCNTHI); | |
269 | ei_outb(0x00, nic_base + EN0_RSARLO); | |
270 | ei_outb(start_page, nic_base + EN0_RSARHI); | |
271 | ||
272 | ei_outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD); | |
273 | if (ei_status.word16) { | |
274 | writesw(nic_base + NE_DATAPORT, buf, count>>1); | |
275 | } else { | |
276 | writesb(nic_base + NE_DATAPORT, buf, count); | |
277 | } | |
278 | ||
279 | dma_start = jiffies; | |
280 | ||
281 | while ((ei_inb(nic_base + EN0_ISR) & ENISR_RDC) == 0) { | |
282 | if (jiffies - dma_start > 2*HZ/100) { /* 20ms */ | |
283 | printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name); | |
284 | ax_reset_8390(dev); | |
285 | ax_NS8390_init(dev,1); | |
286 | break; | |
287 | } | |
288 | } | |
289 | ||
290 | ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ | |
291 | ei_status.dmaing &= ~0x01; | |
292 | return; | |
293 | } | |
294 | ||
295 | /* definitions for accessing MII/EEPROM interface */ | |
296 | ||
297 | #define AX_MEMR EI_SHIFT(0x14) | |
298 | #define AX_MEMR_MDC (1<<0) | |
299 | #define AX_MEMR_MDIR (1<<1) | |
300 | #define AX_MEMR_MDI (1<<2) | |
301 | #define AX_MEMR_MDO (1<<3) | |
302 | #define AX_MEMR_EECS (1<<4) | |
303 | #define AX_MEMR_EEI (1<<5) | |
304 | #define AX_MEMR_EEO (1<<6) | |
305 | #define AX_MEMR_EECLK (1<<7) | |
306 | ||
307 | /* ax_mii_ei_outbits | |
308 | * | |
309 | * write the specified set of bits to the phy | |
310 | */ | |
311 | ||
312 | static void | |
313 | ax_mii_ei_outbits(struct net_device *dev, unsigned int bits, int len) | |
314 | { | |
315 | struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); | |
316 | void __iomem *memr_addr = (void __iomem *)dev->base_addr + AX_MEMR; | |
317 | unsigned int memr; | |
318 | ||
319 | /* clock low, data to output mode */ | |
320 | memr = ei_inb(memr_addr); | |
321 | memr &= ~(AX_MEMR_MDC | AX_MEMR_MDIR); | |
322 | ei_outb(memr, memr_addr); | |
323 | ||
324 | for (len--; len >= 0; len--) { | |
325 | if (bits & (1 << len)) | |
326 | memr |= AX_MEMR_MDO; | |
327 | else | |
328 | memr &= ~AX_MEMR_MDO; | |
329 | ||
330 | ei_outb(memr, memr_addr); | |
331 | ||
332 | /* clock high */ | |
333 | ||
334 | ei_outb(memr | AX_MEMR_MDC, memr_addr); | |
335 | udelay(1); | |
336 | ||
337 | /* clock low */ | |
338 | ei_outb(memr, memr_addr); | |
339 | } | |
340 | ||
341 | /* leaves the clock line low, mdir input */ | |
342 | memr |= AX_MEMR_MDIR; | |
343 | ei_outb(memr, (void __iomem *)dev->base_addr + AX_MEMR); | |
344 | } | |
345 | ||
346 | /* ax_phy_ei_inbits | |
347 | * | |
348 | * read a specified number of bits from the phy | |
349 | */ | |
350 | ||
351 | static unsigned int | |
352 | ax_phy_ei_inbits(struct net_device *dev, int no) | |
353 | { | |
354 | struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); | |
355 | void __iomem *memr_addr = (void __iomem *)dev->base_addr + AX_MEMR; | |
356 | unsigned int memr; | |
357 | unsigned int result = 0; | |
358 | ||
359 | /* clock low, data to input mode */ | |
360 | memr = ei_inb(memr_addr); | |
361 | memr &= ~AX_MEMR_MDC; | |
362 | memr |= AX_MEMR_MDIR; | |
363 | ei_outb(memr, memr_addr); | |
364 | ||
365 | for (no--; no >= 0; no--) { | |
366 | ei_outb(memr | AX_MEMR_MDC, memr_addr); | |
367 | ||
368 | udelay(1); | |
369 | ||
370 | if (ei_inb(memr_addr) & AX_MEMR_MDI) | |
371 | result |= (1<<no); | |
372 | ||
373 | ei_outb(memr, memr_addr); | |
374 | } | |
375 | ||
376 | return result; | |
377 | } | |
378 | ||
379 | /* ax_phy_issueaddr | |
380 | * | |
381 | * use the low level bit shifting routines to send the address | |
382 | * and command to the specified phy | |
383 | */ | |
384 | ||
385 | static void | |
386 | ax_phy_issueaddr(struct net_device *dev, int phy_addr, int reg, int opc) | |
387 | { | |
388 | if (phy_debug) | |
389 | pr_debug("%s: dev %p, %04x, %04x, %d\n", | |
390 | __FUNCTION__, dev, phy_addr, reg, opc); | |
391 | ||
392 | ax_mii_ei_outbits(dev, 0x3f, 6); /* pre-amble */ | |
393 | ax_mii_ei_outbits(dev, 1, 2); /* frame-start */ | |
394 | ax_mii_ei_outbits(dev, opc, 2); /* op code */ | |
395 | ax_mii_ei_outbits(dev, phy_addr, 5); /* phy address */ | |
396 | ax_mii_ei_outbits(dev, reg, 5); /* reg address */ | |
397 | } | |
398 | ||
399 | static int | |
400 | ax_phy_read(struct net_device *dev, int phy_addr, int reg) | |
401 | { | |
402 | struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); | |
403 | unsigned long flags; | |
404 | unsigned int result; | |
405 | ||
406 | spin_lock_irqsave(&ei_local->page_lock, flags); | |
407 | ||
408 | ax_phy_issueaddr(dev, phy_addr, reg, 2); | |
409 | ||
410 | result = ax_phy_ei_inbits(dev, 17); | |
411 | result &= ~(3<<16); | |
412 | ||
413 | spin_unlock_irqrestore(&ei_local->page_lock, flags); | |
414 | ||
415 | if (phy_debug) | |
416 | pr_debug("%s: %04x.%04x => read %04x\n", __FUNCTION__, | |
417 | phy_addr, reg, result); | |
418 | ||
419 | return result; | |
420 | } | |
421 | ||
422 | static void | |
423 | ax_phy_write(struct net_device *dev, int phy_addr, int reg, int value) | |
424 | { | |
425 | struct ei_device *ei = (struct ei_device *) netdev_priv(dev); | |
426 | unsigned long flags; | |
427 | ||
428 | printk(KERN_DEBUG "%s: %p, %04x, %04x %04x\n", | |
429 | __FUNCTION__, dev, phy_addr, reg, value); | |
430 | ||
431 | spin_lock_irqsave(&ei->page_lock, flags); | |
432 | ||
433 | ax_phy_issueaddr(dev, phy_addr, reg, 1); | |
434 | ax_mii_ei_outbits(dev, 2, 2); /* send TA */ | |
435 | ax_mii_ei_outbits(dev, value, 16); | |
436 | ||
437 | spin_unlock_irqrestore(&ei->page_lock, flags); | |
438 | } | |
439 | ||
440 | static void ax_mii_expiry(unsigned long data) | |
441 | { | |
442 | struct net_device *dev = (struct net_device *)data; | |
443 | struct ax_device *ax = to_ax_dev(dev); | |
444 | unsigned long flags; | |
445 | ||
446 | spin_lock_irqsave(&ax->mii_lock, flags); | |
447 | mii_check_media(&ax->mii, netif_msg_link(ax), 0); | |
448 | spin_unlock_irqrestore(&ax->mii_lock, flags); | |
449 | ||
450 | if (ax->running) { | |
451 | ax->mii_timer.expires = jiffies + HZ*2; | |
452 | add_timer(&ax->mii_timer); | |
453 | } | |
454 | } | |
455 | ||
456 | static int ax_open(struct net_device *dev) | |
457 | { | |
458 | struct ax_device *ax = to_ax_dev(dev); | |
459 | struct ei_device *ei_local = netdev_priv(dev); | |
460 | int ret; | |
461 | ||
462 | dev_dbg(ax->dev, "%s: open\n", dev->name); | |
463 | ||
464 | ret = request_irq(dev->irq, ax_ei_interrupt, 0, dev->name, dev); | |
465 | if (ret) | |
466 | return ret; | |
467 | ||
468 | ret = ax_ei_open(dev); | |
469 | if (ret) | |
470 | return ret; | |
471 | ||
472 | /* turn the phy on (if turned off) */ | |
473 | ||
474 | ei_outb(ax->plat->gpoc_val, ei_local->mem + EI_SHIFT(0x17)); | |
475 | ax->running = 1; | |
476 | ||
477 | /* start the MII timer */ | |
478 | ||
479 | init_timer(&ax->mii_timer); | |
480 | ||
481 | ax->mii_timer.expires = jiffies+1; | |
482 | ax->mii_timer.data = (unsigned long) dev; | |
483 | ax->mii_timer.function = ax_mii_expiry; | |
484 | ||
485 | add_timer(&ax->mii_timer); | |
486 | ||
487 | return 0; | |
488 | } | |
489 | ||
490 | static int ax_close(struct net_device *dev) | |
491 | { | |
492 | struct ax_device *ax = to_ax_dev(dev); | |
493 | struct ei_device *ei_local = netdev_priv(dev); | |
494 | ||
495 | dev_dbg(ax->dev, "%s: close\n", dev->name); | |
496 | ||
497 | /* turn the phy off */ | |
498 | ||
499 | ei_outb(ax->plat->gpoc_val | (1<<6), | |
500 | ei_local->mem + EI_SHIFT(0x17)); | |
501 | ||
502 | ax->running = 0; | |
503 | wmb(); | |
504 | ||
505 | del_timer_sync(&ax->mii_timer); | |
506 | ax_ei_close(dev); | |
507 | ||
508 | free_irq(dev->irq, dev); | |
509 | return 0; | |
510 | } | |
511 | ||
512 | static int ax_ioctl(struct net_device *dev, struct ifreq *req, int cmd) | |
513 | { | |
514 | struct ax_device *ax = to_ax_dev(dev); | |
515 | unsigned long flags; | |
516 | int rc; | |
517 | ||
518 | if (!netif_running(dev)) | |
519 | return -EINVAL; | |
520 | ||
521 | spin_lock_irqsave(&ax->mii_lock, flags); | |
522 | rc = generic_mii_ioctl(&ax->mii, if_mii(req), cmd, NULL); | |
523 | spin_unlock_irqrestore(&ax->mii_lock, flags); | |
524 | ||
525 | return rc; | |
526 | } | |
527 | ||
528 | /* ethtool ops */ | |
529 | ||
530 | static void ax_get_drvinfo(struct net_device *dev, | |
531 | struct ethtool_drvinfo *info) | |
532 | { | |
533 | struct ax_device *ax = to_ax_dev(dev); | |
534 | ||
535 | strcpy(info->driver, DRV_NAME); | |
536 | strcpy(info->version, DRV_VERSION); | |
537 | strcpy(info->bus_info, ax->dev->name); | |
538 | } | |
539 | ||
540 | static int ax_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
541 | { | |
542 | struct ax_device *ax = to_ax_dev(dev); | |
543 | unsigned long flags; | |
544 | ||
545 | spin_lock_irqsave(&ax->mii_lock, flags); | |
546 | mii_ethtool_gset(&ax->mii, cmd); | |
547 | spin_lock_irqsave(&ax->mii_lock, flags); | |
548 | ||
549 | return 0; | |
550 | } | |
551 | ||
552 | static int ax_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
553 | { | |
554 | struct ax_device *ax = to_ax_dev(dev); | |
555 | unsigned long flags; | |
556 | int rc; | |
557 | ||
558 | spin_lock_irqsave(&ax->mii_lock, flags); | |
559 | rc = mii_ethtool_sset(&ax->mii, cmd); | |
560 | spin_lock_irqsave(&ax->mii_lock, flags); | |
561 | ||
562 | return rc; | |
563 | } | |
564 | ||
565 | static int ax_nway_reset(struct net_device *dev) | |
566 | { | |
567 | struct ax_device *ax = to_ax_dev(dev); | |
568 | return mii_nway_restart(&ax->mii); | |
569 | } | |
570 | ||
571 | static u32 ax_get_link(struct net_device *dev) | |
572 | { | |
573 | struct ax_device *ax = to_ax_dev(dev); | |
574 | return mii_link_ok(&ax->mii); | |
575 | } | |
576 | ||
577 | static const struct ethtool_ops ax_ethtool_ops = { | |
578 | .get_drvinfo = ax_get_drvinfo, | |
579 | .get_settings = ax_get_settings, | |
580 | .set_settings = ax_set_settings, | |
581 | .nway_reset = ax_nway_reset, | |
582 | .get_link = ax_get_link, | |
583 | .get_perm_addr = ethtool_op_get_perm_addr, | |
584 | }; | |
585 | ||
586 | /* setup code */ | |
587 | ||
588 | static void ax_initial_setup(struct net_device *dev, struct ei_device *ei_local) | |
589 | { | |
590 | void __iomem *ioaddr = ei_local->mem; | |
591 | struct ax_device *ax = to_ax_dev(dev); | |
592 | ||
593 | /* Select page 0*/ | |
594 | ei_outb(E8390_NODMA+E8390_PAGE0+E8390_STOP, ioaddr + E8390_CMD); | |
595 | ||
596 | /* set to byte access */ | |
597 | ei_outb(ax->plat->dcr_val & ~1, ioaddr + EN0_DCFG); | |
598 | ei_outb(ax->plat->gpoc_val, ioaddr + EI_SHIFT(0x17)); | |
599 | } | |
600 | ||
601 | /* ax_init_dev | |
602 | * | |
603 | * initialise the specified device, taking care to note the MAC | |
604 | * address it may already have (if configured), ensure | |
605 | * the device is ready to be used by lib8390.c and registerd with | |
606 | * the network layer. | |
607 | */ | |
608 | ||
609 | static int ax_init_dev(struct net_device *dev, int first_init) | |
610 | { | |
611 | struct ei_device *ei_local = netdev_priv(dev); | |
612 | struct ax_device *ax = to_ax_dev(dev); | |
613 | void __iomem *ioaddr = ei_local->mem; | |
614 | unsigned int start_page; | |
615 | unsigned int stop_page; | |
616 | int ret; | |
617 | int i; | |
618 | ||
619 | ret = ax_initial_check(dev); | |
620 | if (ret) | |
621 | goto err_out; | |
622 | ||
623 | /* setup goes here */ | |
624 | ||
625 | ax_initial_setup(dev, ei_local); | |
626 | ||
627 | /* read the mac from the card prom if we need it */ | |
628 | ||
629 | if (first_init && ax->plat->flags & AXFLG_HAS_EEPROM) { | |
630 | unsigned char SA_prom[32]; | |
631 | ||
632 | for(i = 0; i < sizeof(SA_prom); i+=2) { | |
633 | SA_prom[i] = ei_inb(ioaddr + NE_DATAPORT); | |
634 | SA_prom[i+1] = ei_inb(ioaddr + NE_DATAPORT); | |
635 | } | |
636 | ||
637 | if (ax->plat->wordlength == 2) | |
638 | for (i = 0; i < 16; i++) | |
639 | SA_prom[i] = SA_prom[i+i]; | |
640 | ||
641 | memcpy(dev->dev_addr, SA_prom, 6); | |
642 | } | |
643 | ||
644 | if (ax->plat->wordlength == 2) { | |
645 | /* We must set the 8390 for word mode. */ | |
646 | ei_outb(ax->plat->dcr_val, ei_local->mem + EN0_DCFG); | |
647 | start_page = NESM_START_PG; | |
648 | stop_page = NESM_STOP_PG; | |
649 | } else { | |
650 | start_page = NE1SM_START_PG; | |
651 | stop_page = NE1SM_STOP_PG; | |
652 | } | |
653 | ||
654 | /* load the mac-address from the device if this is the | |
655 | * first time we've initialised */ | |
656 | ||
657 | if (first_init && ax->plat->flags & AXFLG_MAC_FROMDEV) { | |
658 | ei_outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP, | |
659 | ei_local->mem + E8390_CMD); /* 0x61 */ | |
660 | ||
661 | for (i = 0 ; i < ETHER_ADDR_LEN ; i++) | |
662 | dev->dev_addr[i] = ei_inb(ioaddr + EN1_PHYS_SHIFT(i)); | |
663 | } | |
664 | ||
665 | ax_reset_8390(dev); | |
666 | ||
667 | ei_status.name = "AX88796"; | |
668 | ei_status.tx_start_page = start_page; | |
669 | ei_status.stop_page = stop_page; | |
670 | ei_status.word16 = (ax->plat->wordlength == 2); | |
671 | ei_status.rx_start_page = start_page + TX_PAGES; | |
672 | ||
673 | #ifdef PACKETBUF_MEMSIZE | |
674 | /* Allow the packet buffer size to be overridden by know-it-alls. */ | |
675 | ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE; | |
676 | #endif | |
677 | ||
678 | ei_status.reset_8390 = &ax_reset_8390; | |
679 | ei_status.block_input = &ax_block_input; | |
680 | ei_status.block_output = &ax_block_output; | |
681 | ei_status.get_8390_hdr = &ax_get_8390_hdr; | |
682 | ei_status.priv = 0; | |
683 | ||
684 | dev->open = ax_open; | |
685 | dev->stop = ax_close; | |
686 | dev->do_ioctl = ax_ioctl; | |
687 | dev->ethtool_ops = &ax_ethtool_ops; | |
688 | ||
689 | ax->msg_enable = NETIF_MSG_LINK; | |
690 | ax->mii.phy_id_mask = 0x1f; | |
691 | ax->mii.reg_num_mask = 0x1f; | |
692 | ax->mii.phy_id = 0x10; /* onboard phy */ | |
693 | ax->mii.force_media = 0; | |
694 | ax->mii.full_duplex = 0; | |
695 | ax->mii.mdio_read = ax_phy_read; | |
696 | ax->mii.mdio_write = ax_phy_write; | |
697 | ax->mii.dev = dev; | |
698 | ||
699 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
700 | dev->poll_controller = ax_ei_poll; | |
701 | #endif | |
702 | ax_NS8390_init(dev, 0); | |
703 | ||
704 | if (first_init) { | |
705 | printk("AX88796: %dbit, irq %d, %lx, MAC: ", | |
706 | ei_status.word16 ? 16:8, dev->irq, dev->base_addr); | |
707 | ||
708 | for (i = 0; i < ETHER_ADDR_LEN; i++) | |
709 | printk("%2.2x%c", dev->dev_addr[i], | |
710 | (i < (ETHER_ADDR_LEN-1) ? ':' : ' ')); | |
711 | ||
712 | printk("\n"); | |
713 | } | |
714 | ||
715 | ret = register_netdev(dev); | |
716 | if (ret) | |
717 | goto out_irq; | |
718 | ||
719 | return 0; | |
720 | ||
721 | out_irq: | |
722 | /* cleanup irq */ | |
723 | free_irq(dev->irq, dev); | |
724 | err_out: | |
725 | return ret; | |
726 | } | |
727 | ||
728 | static int ax_remove(struct platform_device *_dev) | |
729 | { | |
730 | struct net_device *dev = platform_get_drvdata(_dev); | |
731 | struct ax_device *ax; | |
732 | ||
733 | ax = to_ax_dev(dev); | |
734 | ||
735 | unregister_netdev(dev); | |
736 | free_irq(dev->irq, dev); | |
737 | ||
738 | iounmap(ei_status.mem); | |
739 | release_resource(ax->mem); | |
740 | kfree(ax->mem); | |
741 | ||
742 | if (ax->map2) { | |
743 | iounmap(ax->map2); | |
744 | release_resource(ax->mem2); | |
745 | kfree(ax->mem2); | |
746 | } | |
747 | ||
748 | free_netdev(dev); | |
749 | ||
750 | return 0; | |
751 | } | |
752 | ||
753 | /* ax_probe | |
754 | * | |
755 | * This is the entry point when the platform device system uses to | |
756 | * notify us of a new device to attach to. Allocate memory, find | |
757 | * the resources and information passed, and map the necessary registers. | |
758 | */ | |
759 | ||
760 | static int ax_probe(struct platform_device *pdev) | |
761 | { | |
762 | struct net_device *dev; | |
763 | struct ax_device *ax; | |
764 | struct resource *res; | |
765 | size_t size; | |
766 | int ret; | |
767 | ||
768 | dev = ax__alloc_ei_netdev(sizeof(struct ax_device)); | |
769 | if (dev == NULL) | |
770 | return -ENOMEM; | |
771 | ||
772 | /* ok, let's setup our device */ | |
773 | ax = to_ax_dev(dev); | |
774 | ||
775 | memset(ax, 0, sizeof(struct ax_device)); | |
776 | ||
777 | spin_lock_init(&ax->mii_lock); | |
778 | ||
779 | ax->dev = pdev; | |
780 | ax->plat = pdev->dev.platform_data; | |
781 | platform_set_drvdata(pdev, dev); | |
782 | ||
783 | ei_status.rxcr_base = ax->plat->rcr_val; | |
784 | ||
785 | /* find the platform resources */ | |
786 | ||
787 | dev->irq = platform_get_irq(pdev, 0); | |
788 | if (dev->irq < 0) { | |
789 | dev_err(&pdev->dev, "no IRQ specified\n"); | |
790 | ret = -ENXIO; | |
791 | goto exit_mem; | |
792 | } | |
793 | ||
794 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
795 | if (res == NULL) { | |
796 | dev_err(&pdev->dev, "no MEM specified\n"); | |
797 | ret = -ENXIO; | |
798 | goto exit_mem; | |
799 | } | |
800 | ||
801 | size = (res->end - res->start) + 1; | |
802 | ||
803 | /* setup the register offsets from either the platform data | |
804 | * or by using the size of the resource provided */ | |
805 | ||
806 | if (ax->plat->reg_offsets) | |
807 | ei_status.reg_offset = ax->plat->reg_offsets; | |
808 | else { | |
809 | ei_status.reg_offset = ax->reg_offsets; | |
810 | for (ret = 0; ret < 0x18; ret++) | |
811 | ax->reg_offsets[ret] = (size / 0x18) * ret; | |
812 | } | |
813 | ||
814 | ax->mem = request_mem_region(res->start, size, pdev->name); | |
815 | if (ax->mem == NULL) { | |
816 | dev_err(&pdev->dev, "cannot reserve registers\n"); | |
817 | ret = -ENXIO; | |
818 | goto exit_mem; | |
819 | } | |
820 | ||
821 | ei_status.mem = ioremap(res->start, size); | |
822 | dev->base_addr = (long)ei_status.mem; | |
823 | ||
824 | if (ei_status.mem == NULL) { | |
825 | dev_err(&pdev->dev, "Cannot ioremap area (%08zx,%08zx)\n", | |
826 | res->start, res->end); | |
827 | ||
828 | ret = -ENXIO; | |
829 | goto exit_req; | |
830 | } | |
831 | ||
832 | /* look for reset area */ | |
833 | ||
834 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
835 | if (res == NULL) { | |
836 | if (!ax->plat->reg_offsets) { | |
837 | for (ret = 0; ret < 0x20; ret++) | |
838 | ax->reg_offsets[ret] = (size / 0x20) * ret; | |
839 | } | |
840 | ||
841 | ax->map2 = NULL; | |
842 | } else { | |
843 | size = (res->end - res->start) + 1; | |
844 | ||
845 | ax->mem2 = request_mem_region(res->start, size, pdev->name); | |
846 | if (ax->mem == NULL) { | |
847 | dev_err(&pdev->dev, "cannot reserve registers\n"); | |
848 | ret = -ENXIO; | |
849 | goto exit_mem1; | |
850 | } | |
851 | ||
852 | ax->map2 = ioremap(res->start, size); | |
853 | if (ax->map2 == NULL) { | |
854 | dev_err(&pdev->dev, "cannot map reset register"); | |
855 | ret = -ENXIO; | |
856 | goto exit_mem2; | |
857 | } | |
858 | ||
859 | ei_status.reg_offset[0x1f] = ax->map2 - ei_status.mem; | |
860 | } | |
861 | ||
862 | /* got resources, now initialise and register device */ | |
863 | ||
864 | ret = ax_init_dev(dev, 1); | |
865 | if (!ret) | |
866 | return 0; | |
867 | ||
868 | if (ax->map2 == NULL) | |
869 | goto exit_mem1; | |
870 | ||
871 | iounmap(ax->map2); | |
872 | ||
873 | exit_mem2: | |
874 | release_resource(ax->mem2); | |
875 | kfree(ax->mem2); | |
876 | ||
877 | exit_mem1: | |
878 | iounmap(ei_status.mem); | |
879 | ||
880 | exit_req: | |
881 | release_resource(ax->mem); | |
882 | kfree(ax->mem); | |
883 | ||
884 | exit_mem: | |
885 | free_netdev(dev); | |
886 | ||
887 | return ret; | |
888 | } | |
889 | ||
890 | /* suspend and resume */ | |
891 | ||
892 | #ifdef CONFIG_PM | |
893 | static int ax_suspend(struct platform_device *dev, pm_message_t state) | |
894 | { | |
895 | struct net_device *ndev = platform_get_drvdata(dev); | |
896 | struct ax_device *ax = to_ax_dev(ndev); | |
897 | ||
898 | ax->resume_open = ax->running; | |
899 | ||
900 | netif_device_detach(ndev); | |
901 | ax_close(ndev); | |
902 | ||
903 | return 0; | |
904 | } | |
905 | ||
906 | static int ax_resume(struct platform_device *pdev) | |
907 | { | |
908 | struct net_device *ndev = platform_get_drvdata(pdev); | |
909 | struct ax_device *ax = to_ax_dev(ndev); | |
910 | ||
911 | ax_initial_setup(ndev, netdev_priv(ndev)); | |
912 | ax_NS8390_init(ndev, ax->resume_open); | |
913 | netif_device_attach(ndev); | |
914 | ||
915 | if (ax->resume_open) | |
916 | ax_open(ndev); | |
917 | ||
918 | return 0; | |
919 | } | |
920 | ||
921 | #else | |
922 | #define ax_suspend NULL | |
923 | #define ax_resume NULL | |
924 | #endif | |
925 | ||
926 | static struct platform_driver axdrv = { | |
927 | .driver = { | |
928 | .name = "ax88796", | |
929 | .owner = THIS_MODULE, | |
930 | }, | |
931 | .probe = ax_probe, | |
932 | .remove = ax_remove, | |
933 | .suspend = ax_suspend, | |
934 | .resume = ax_resume, | |
935 | }; | |
936 | ||
937 | static int __init axdrv_init(void) | |
938 | { | |
939 | return platform_driver_register(&axdrv); | |
940 | } | |
941 | ||
942 | static void __exit axdrv_exit(void) | |
943 | { | |
944 | platform_driver_unregister(&axdrv); | |
945 | } | |
946 | ||
947 | module_init(axdrv_init); | |
948 | module_exit(axdrv_exit); | |
949 | ||
950 | MODULE_DESCRIPTION("AX88796 10/100 Ethernet platform driver"); | |
951 | MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>"); | |
952 | MODULE_LICENSE("GPL v2"); |