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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> |
5a0e3ad6 | 28 | #include <linux/slab.h> |
825a2ff1 BD |
29 | |
30 | #include <net/ax88796.h> | |
31 | ||
32 | #include <asm/system.h> | |
33 | #include <asm/io.h> | |
34 | ||
35 | static 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 | |
d57bc36e | 41 | #define __ei_start_xmit ax_ei_start_xmit |
825a2ff1 | 42 | #define __ei_tx_timeout ax_ei_tx_timeout |
d57bc36e MD |
43 | #define __ei_get_stats ax_ei_get_stats |
44 | #define __ei_set_multicast_list ax_ei_set_multicast_list | |
825a2ff1 BD |
45 | #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 | ||
64 | static 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 | ||
83 | struct 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; | |
47cb0355 | 97 | unsigned int irqflags; |
825a2ff1 BD |
98 | |
99 | u32 reg_offsets[0x20]; | |
100 | }; | |
101 | ||
102 | static 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 | ||
114 | static 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 | ||
142 | static void ax_reset_8390(struct net_device *dev) | |
143 | { | |
144 | struct ei_device *ei_local = netdev_priv(dev); | |
237c5e8e | 145 | struct ax_device *ax = to_ax_dev(dev); |
825a2ff1 BD |
146 | unsigned long reset_start_time = jiffies; |
147 | void __iomem *addr = (void __iomem *)dev->base_addr; | |
148 | ||
149 | if (ei_debug > 1) | |
237c5e8e | 150 | dev_dbg(&ax->dev->dev, "resetting the 8390 t=%ld\n", jiffies); |
825a2ff1 BD |
151 | |
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) { | |
237c5e8e | 160 | dev_warn(&ax->dev->dev, "%s: %s did not complete.\n", |
b39d66a8 | 161 | __func__, dev->name); |
825a2ff1 BD |
162 | break; |
163 | } | |
164 | } | |
165 | ||
166 | ei_outb(ENISR_RESET, addr + EN0_ISR); /* Ack intr. */ | |
167 | } | |
168 | ||
169 | ||
170 | static 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); | |
237c5e8e | 174 | struct ax_device *ax = to_ax_dev(dev); |
825a2ff1 BD |
175 | 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) { | |
237c5e8e BD |
179 | dev_err(&ax->dev->dev, "%s: DMAing conflict in %s " |
180 | "[DMAstat:%d][irqlock:%d].\n", | |
b39d66a8 | 181 | dev->name, __func__, |
237c5e8e | 182 | ei_status.dmaing, ei_status.irqlock); |
825a2ff1 BD |
183 | 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 | ||
211 | static 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); | |
237c5e8e | 215 | struct ax_device *ax = to_ax_dev(dev); |
825a2ff1 BD |
216 | void __iomem *nic_base = ei_local->mem; |
217 | char *buf = skb->data; | |
218 | ||
219 | if (ei_status.dmaing) { | |
237c5e8e BD |
220 | dev_err(&ax->dev->dev, |
221 | "%s: DMAing conflict in %s " | |
825a2ff1 | 222 | "[DMAstat:%d][irqlock:%d].\n", |
b39d66a8 | 223 | dev->name, __func__, |
237c5e8e | 224 | ei_status.dmaing, ei_status.irqlock); |
825a2ff1 BD |
225 | 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 | ||
249 | static 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); | |
237c5e8e | 253 | struct ax_device *ax = to_ax_dev(dev); |
825a2ff1 BD |
254 | 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) { | |
237c5e8e | 266 | dev_err(&ax->dev->dev, "%s: DMAing conflict in %s." |
825a2ff1 | 267 | "[DMAstat:%d][irqlock:%d]\n", |
b39d66a8 | 268 | dev->name, __func__, |
825a2ff1 BD |
269 | 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 */ | |
237c5e8e BD |
296 | dev_warn(&ax->dev->dev, |
297 | "%s: timeout waiting for Tx RDC.\n", dev->name); | |
825a2ff1 BD |
298 | 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 | ||
326 | static void | |
327 | ax_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 | ||
365 | static unsigned int | |
366 | ax_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 | ||
399 | static void | |
400 | ax_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", | |
b39d66a8 | 404 | __func__, dev, phy_addr, reg, opc); |
825a2ff1 BD |
405 | |
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 | ||
413 | static int | |
414 | ax_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) | |
b39d66a8 | 430 | pr_debug("%s: %04x.%04x => read %04x\n", __func__, |
825a2ff1 BD |
431 | phy_addr, reg, result); |
432 | ||
433 | return result; | |
434 | } | |
435 | ||
436 | static void | |
437 | ax_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); | |
237c5e8e | 440 | struct ax_device *ax = to_ax_dev(dev); |
825a2ff1 BD |
441 | unsigned long flags; |
442 | ||
237c5e8e | 443 | dev_dbg(&ax->dev->dev, "%s: %p, %04x, %04x %04x\n", |
b39d66a8 | 444 | __func__, dev, phy_addr, reg, value); |
825a2ff1 BD |
445 | |
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 | ||
455 | static 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 | ||
471 | static 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 | ||
2832e856 | 477 | dev_dbg(&ax->dev->dev, "%s: open\n", dev->name); |
825a2ff1 | 478 | |
47cb0355 DM |
479 | ret = request_irq(dev->irq, ax_ei_interrupt, ax->irqflags, |
480 | dev->name, dev); | |
825a2ff1 BD |
481 | 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 | ||
506 | static 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 | ||
2832e856 | 511 | dev_dbg(&ax->dev->dev, "%s: close\n", dev->name); |
825a2ff1 BD |
512 | |
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 | ||
528 | static 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 | ||
546 | static 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 | ||
556 | static 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); | |
c0912585 | 563 | spin_unlock_irqrestore(&ax->mii_lock, flags); |
825a2ff1 BD |
564 | |
565 | return 0; | |
566 | } | |
567 | ||
568 | static 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); | |
c0912585 | 576 | spin_unlock_irqrestore(&ax->mii_lock, flags); |
825a2ff1 BD |
577 | |
578 | return rc; | |
579 | } | |
580 | ||
581 | static 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 | ||
587 | static 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 | ||
593 | static 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, | |
825a2ff1 BD |
599 | }; |
600 | ||
89e536a1 MD |
601 | #ifdef CONFIG_AX88796_93CX6 |
602 | static 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 | ||
613 | static 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 | ||
d57bc36e MD |
632 | static 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 | ||
825a2ff1 BD |
649 | /* setup code */ |
650 | ||
651 | static 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 | ||
672 | static 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 | ||
89e536a1 MD |
707 | #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 | |
825a2ff1 BD |
724 | 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 | ||
67fca028 DM |
737 | 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 | } | |
825a2ff1 | 745 | |
67fca028 DM |
746 | 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); | |
825a2ff1 BD |
750 | } |
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 | ||
d57bc36e | 771 | dev->netdev_ops = &ax_netdev_ops; |
825a2ff1 BD |
772 | 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 | ||
825a2ff1 BD |
784 | ax_NS8390_init(dev, 0); |
785 | ||
e174961c JB |
786 | if (first_init) |
787 | dev_info(&ax->dev->dev, "%dbit, irq %d, %lx, MAC: %pM\n", | |
237c5e8e | 788 | ei_status.word16 ? 16:8, dev->irq, dev->base_addr, |
e174961c | 789 | dev->dev_addr); |
825a2ff1 BD |
790 | |
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 | ||
804 | static 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 | ||
836 | static 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; | |
47cb0355 | 842 | int ret = 0; |
825a2ff1 BD |
843 | |
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 | ||
47cb0355 DM |
863 | res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
864 | if (res == NULL) { | |
825a2ff1 | 865 | dev_err(&pdev->dev, "no IRQ specified\n"); |
825a2ff1 BD |
866 | goto exit_mem; |
867 | } | |
47cb0355 DM |
868 | |
869 | dev->irq = res->start; | |
870 | ax->irqflags = res->flags & IRQF_TRIGGER_MASK; | |
825a2ff1 BD |
871 | |
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); | |
c7b17cb1 | 900 | dev->base_addr = (unsigned long)ei_status.mem; |
825a2ff1 BD |
901 | |
902 | if (ei_status.mem == NULL) { | |
b4efe22c AM |
903 | dev_err(&pdev->dev, "Cannot ioremap area (%08llx,%08llx)\n", |
904 | (unsigned long long)res->start, | |
905 | (unsigned long long)res->end); | |
825a2ff1 BD |
906 | |
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); | |
bcf4d812 | 925 | if (ax->mem2 == NULL) { |
825a2ff1 BD |
926 | 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) { | |
898eb71c | 933 | dev_err(&pdev->dev, "cannot map reset register\n"); |
825a2ff1 BD |
934 | 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 | |
972 | static 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 | ||
985 | static 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 | ||
1005 | static 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 | ||
1016 | static int __init axdrv_init(void) | |
1017 | { | |
1018 | return platform_driver_register(&axdrv); | |
1019 | } | |
1020 | ||
1021 | static void __exit axdrv_exit(void) | |
1022 | { | |
1023 | platform_driver_unregister(&axdrv); | |
1024 | } | |
1025 | ||
1026 | module_init(axdrv_init); | |
1027 | module_exit(axdrv_exit); | |
1028 | ||
1029 | MODULE_DESCRIPTION("AX88796 10/100 Ethernet platform driver"); | |
1030 | MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>"); | |
1031 | MODULE_LICENSE("GPL v2"); | |
72abb461 | 1032 | MODULE_ALIAS("platform:ax88796"); |