1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* drivers/net/ethernet/8390/ax88796.c |
3 | * |
4 | * Copyright 2005,2007 Simtec Electronics |
5 | * Ben Dooks <ben@simtec.co.uk> |
6 | * |
7 | * Asix AX88796 10/100 Ethernet controller support |
8 | * Based on ne.c, by Donald Becker, et-al. |
9 | */ |
10 | |
11 | #include <linux/module.h> |
12 | #include <linux/kernel.h> |
13 | #include <linux/errno.h> |
14 | #include <linux/isapnp.h> |
15 | #include <linux/interrupt.h> |
16 | #include <linux/io.h> |
17 | #include <linux/platform_device.h> |
18 | #include <linux/delay.h> |
19 | #include <linux/timer.h> |
20 | #include <linux/netdevice.h> |
21 | #include <linux/etherdevice.h> |
22 | #include <linux/ethtool.h> |
23 | #include <linux/mdio-bitbang.h> |
24 | #include <linux/phy.h> |
25 | #include <linux/eeprom_93cx6.h> |
26 | #include <linux/slab.h> |
27 | |
28 | #include <net/ax88796.h> |
29 | |
30 | |
31 | /* Rename the lib8390.c functions to show that they are in this driver */ |
32 | #define __ei_open ax_ei_open |
33 | #define __ei_close ax_ei_close |
34 | #define __ei_poll ax_ei_poll |
35 | #define __ei_start_xmit ax_ei_start_xmit |
36 | #define __ei_tx_timeout ax_ei_tx_timeout |
37 | #define __ei_get_stats ax_ei_get_stats |
38 | #define __ei_set_multicast_list ax_ei_set_multicast_list |
39 | #define __ei_interrupt ax_ei_interrupt |
40 | #define ____alloc_ei_netdev ax__alloc_ei_netdev |
41 | #define __NS8390_init ax_NS8390_init |
42 | |
43 | /* force unsigned long back to 'void __iomem *' */ |
44 | #define ax_convert_addr(_a) ((void __force __iomem *)(_a)) |
45 | |
46 | #define ei_inb(_a) readb(ax_convert_addr(_a)) |
47 | #define ei_outb(_v, _a) writeb(_v, ax_convert_addr(_a)) |
48 | |
49 | #define ei_inb_p(_a) ei_inb(_a) |
50 | #define ei_outb_p(_v, _a) ei_outb(_v, _a) |
51 | |
52 | /* define EI_SHIFT() to take into account our register offsets */ |
53 | #define EI_SHIFT(x) (ei_local->reg_offset[(x)]) |
54 | |
55 | /* Ensure we have our RCR base value */ |
56 | #define AX88796_PLATFORM |
57 | |
58 | static unsigned char version[] = "ax88796.c: Copyright 2005,2007 Simtec Electronics\n" ; |
59 | |
60 | #include "lib8390.c" |
61 | |
62 | #define DRV_NAME "ax88796" |
63 | #define DRV_VERSION "1.00" |
64 | |
65 | /* from ne.c */ |
66 | #define NE_CMD EI_SHIFT(0x00) |
67 | #define NE_RESET EI_SHIFT(0x1f) |
68 | #define NE_DATAPORT EI_SHIFT(0x10) |
69 | |
70 | #define NE1SM_START_PG 0x20 /* First page of TX buffer */ |
71 | #define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */ |
72 | #define NESM_START_PG 0x40 /* First page of TX buffer */ |
73 | #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */ |
74 | |
75 | #define AX_GPOC_PPDSET BIT(6) |
76 | |
77 | /* device private data */ |
78 | |
79 | struct ax_device { |
80 | struct mii_bus *mii_bus; |
81 | struct mdiobb_ctrl bb_ctrl; |
82 | void __iomem *addr_memr; |
83 | u8 reg_memr; |
84 | int link; |
85 | int speed; |
86 | int duplex; |
87 | |
88 | void __iomem *map2; |
89 | const struct ax_plat_data *plat; |
90 | |
91 | unsigned char running; |
92 | unsigned char resume_open; |
93 | unsigned int irqflags; |
94 | |
95 | u32 reg_offsets[0x20]; |
96 | }; |
97 | |
98 | static inline struct ax_device *to_ax_dev(struct net_device *dev) |
99 | { |
100 | struct ei_device *ei_local = netdev_priv(dev); |
101 | return (struct ax_device *)(ei_local + 1); |
102 | } |
103 | |
104 | void ax_NS8390_reinit(struct net_device *dev) |
105 | { |
106 | ax_NS8390_init(dev, startp: 1); |
107 | } |
108 | |
109 | EXPORT_SYMBOL_GPL(ax_NS8390_reinit); |
110 | |
111 | /* |
112 | * ax_initial_check |
113 | * |
114 | * do an initial probe for the card to check whether it exists |
115 | * and is functional |
116 | */ |
117 | static int ax_initial_check(struct net_device *dev) |
118 | { |
119 | struct ei_device *ei_local = netdev_priv(dev); |
120 | void __iomem *ioaddr = ei_local->mem; |
121 | int reg0; |
122 | int regd; |
123 | |
124 | reg0 = ei_inb(ioaddr); |
125 | if (reg0 == 0xFF) |
126 | return -ENODEV; |
127 | |
128 | ei_outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP, ioaddr + E8390_CMD); |
129 | regd = ei_inb(ioaddr + 0x0d); |
130 | ei_outb(0xff, ioaddr + 0x0d); |
131 | ei_outb(E8390_NODMA + E8390_PAGE0, ioaddr + E8390_CMD); |
132 | ei_inb(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */ |
133 | if (ei_inb(ioaddr + EN0_COUNTER0) != 0) { |
134 | ei_outb(reg0, ioaddr); |
135 | ei_outb(regd, ioaddr + 0x0d); /* Restore the old values. */ |
136 | return -ENODEV; |
137 | } |
138 | |
139 | return 0; |
140 | } |
141 | |
142 | /* |
143 | * Hard reset the card. This used to pause for the same period that a |
144 | * 8390 reset command required, but that shouldn't be necessary. |
145 | */ |
146 | static void ax_reset_8390(struct net_device *dev) |
147 | { |
148 | struct ei_device *ei_local = netdev_priv(dev); |
149 | unsigned long reset_start_time = jiffies; |
150 | void __iomem *addr = (void __iomem *)dev->base_addr; |
151 | |
152 | netif_dbg(ei_local, hw, dev, "resetting the 8390 t=%ld...\n" , jiffies); |
153 | |
154 | ei_outb(ei_inb(addr + NE_RESET), addr + NE_RESET); |
155 | |
156 | ei_local->txing = 0; |
157 | ei_local->dmaing = 0; |
158 | |
159 | /* This check _should_not_ be necessary, omit eventually. */ |
160 | while ((ei_inb(addr + EN0_ISR) & ENISR_RESET) == 0) { |
161 | if (time_after(jiffies, reset_start_time + 2 * HZ / 100)) { |
162 | netdev_warn(dev, format: "%s: did not complete.\n" , __func__); |
163 | break; |
164 | } |
165 | } |
166 | |
167 | ei_outb(ENISR_RESET, addr + EN0_ISR); /* Ack intr. */ |
168 | } |
169 | |
170 | /* Wrapper for __ei_interrupt for platforms that have a platform-specific |
171 | * way to find out whether the interrupt request might be caused by |
172 | * the ax88796 chip. |
173 | */ |
174 | static irqreturn_t ax_ei_interrupt_filtered(int irq, void *dev_id) |
175 | { |
176 | struct net_device *dev = dev_id; |
177 | struct ax_device *ax = to_ax_dev(dev); |
178 | struct platform_device *pdev = to_platform_device(dev->dev.parent); |
179 | |
180 | if (!ax->plat->check_irq(pdev)) |
181 | return IRQ_NONE; |
182 | |
183 | return ax_ei_interrupt(irq, dev_id); |
184 | } |
185 | |
186 | static void ax_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, |
187 | int ring_page) |
188 | { |
189 | struct ei_device *ei_local = netdev_priv(dev); |
190 | void __iomem *nic_base = ei_local->mem; |
191 | |
192 | /* This *shouldn't* happen. If it does, it's the last thing you'll see */ |
193 | if (ei_local->dmaing) { |
194 | netdev_err(dev, format: "DMAing conflict in %s " |
195 | "[DMAstat:%d][irqlock:%d].\n" , |
196 | __func__, |
197 | ei_local->dmaing, ei_local->irqlock); |
198 | return; |
199 | } |
200 | |
201 | ei_local->dmaing |= 0x01; |
202 | ei_outb(E8390_NODMA + E8390_PAGE0 + E8390_START, nic_base + NE_CMD); |
203 | ei_outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO); |
204 | ei_outb(0, nic_base + EN0_RCNTHI); |
205 | ei_outb(0, nic_base + EN0_RSARLO); /* On page boundary */ |
206 | ei_outb(ring_page, nic_base + EN0_RSARHI); |
207 | ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); |
208 | |
209 | if (ei_local->word16) |
210 | ioread16_rep(port: nic_base + NE_DATAPORT, buf: hdr, |
211 | count: sizeof(struct e8390_pkt_hdr) >> 1); |
212 | else |
213 | ioread8_rep(port: nic_base + NE_DATAPORT, buf: hdr, |
214 | count: sizeof(struct e8390_pkt_hdr)); |
215 | |
216 | ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ |
217 | ei_local->dmaing &= ~0x01; |
218 | |
219 | le16_to_cpus(&hdr->count); |
220 | } |
221 | |
222 | |
223 | /* |
224 | * Block input and output, similar to the Crynwr packet driver. If |
225 | * you are porting to a new ethercard, look at the packet driver |
226 | * source for hints. The NEx000 doesn't share the on-board packet |
227 | * memory -- you have to put the packet out through the "remote DMA" |
228 | * dataport using ei_outb. |
229 | */ |
230 | static void ax_block_input(struct net_device *dev, int count, |
231 | struct sk_buff *skb, int ring_offset) |
232 | { |
233 | struct ei_device *ei_local = netdev_priv(dev); |
234 | void __iomem *nic_base = ei_local->mem; |
235 | char *buf = skb->data; |
236 | |
237 | if (ei_local->dmaing) { |
238 | netdev_err(dev, |
239 | format: "DMAing conflict in %s " |
240 | "[DMAstat:%d][irqlock:%d].\n" , |
241 | __func__, |
242 | ei_local->dmaing, ei_local->irqlock); |
243 | return; |
244 | } |
245 | |
246 | ei_local->dmaing |= 0x01; |
247 | |
248 | ei_outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base + NE_CMD); |
249 | ei_outb(count & 0xff, nic_base + EN0_RCNTLO); |
250 | ei_outb(count >> 8, nic_base + EN0_RCNTHI); |
251 | ei_outb(ring_offset & 0xff, nic_base + EN0_RSARLO); |
252 | ei_outb(ring_offset >> 8, nic_base + EN0_RSARHI); |
253 | ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); |
254 | |
255 | if (ei_local->word16) { |
256 | ioread16_rep(port: nic_base + NE_DATAPORT, buf, count: count >> 1); |
257 | if (count & 0x01) |
258 | buf[count-1] = ei_inb(nic_base + NE_DATAPORT); |
259 | |
260 | } else { |
261 | ioread8_rep(port: nic_base + NE_DATAPORT, buf, count); |
262 | } |
263 | |
264 | ei_local->dmaing &= ~1; |
265 | } |
266 | |
267 | static void ax_block_output(struct net_device *dev, int count, |
268 | const unsigned char *buf, const int start_page) |
269 | { |
270 | struct ei_device *ei_local = netdev_priv(dev); |
271 | void __iomem *nic_base = ei_local->mem; |
272 | unsigned long dma_start; |
273 | |
274 | /* |
275 | * Round the count up for word writes. Do we need to do this? |
276 | * What effect will an odd byte count have on the 8390? I |
277 | * should check someday. |
278 | */ |
279 | if (ei_local->word16 && (count & 0x01)) |
280 | count++; |
281 | |
282 | /* This *shouldn't* happen. If it does, it's the last thing you'll see */ |
283 | if (ei_local->dmaing) { |
284 | netdev_err(dev, format: "DMAing conflict in %s." |
285 | "[DMAstat:%d][irqlock:%d]\n" , |
286 | __func__, |
287 | ei_local->dmaing, ei_local->irqlock); |
288 | return; |
289 | } |
290 | |
291 | ei_local->dmaing |= 0x01; |
292 | /* We should already be in page 0, but to be safe... */ |
293 | ei_outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD); |
294 | |
295 | ei_outb(ENISR_RDC, nic_base + EN0_ISR); |
296 | |
297 | /* Now the normal output. */ |
298 | ei_outb(count & 0xff, nic_base + EN0_RCNTLO); |
299 | ei_outb(count >> 8, nic_base + EN0_RCNTHI); |
300 | ei_outb(0x00, nic_base + EN0_RSARLO); |
301 | ei_outb(start_page, nic_base + EN0_RSARHI); |
302 | |
303 | ei_outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD); |
304 | if (ei_local->word16) |
305 | iowrite16_rep(port: nic_base + NE_DATAPORT, buf, count: count >> 1); |
306 | else |
307 | iowrite8_rep(port: nic_base + NE_DATAPORT, buf, count); |
308 | |
309 | dma_start = jiffies; |
310 | |
311 | while ((ei_inb(nic_base + EN0_ISR) & ENISR_RDC) == 0) { |
312 | if (time_after(jiffies, dma_start + 2 * HZ / 100)) { /* 20ms */ |
313 | netdev_warn(dev, format: "timeout waiting for Tx RDC.\n" ); |
314 | ax_reset_8390(dev); |
315 | ax_NS8390_init(dev, startp: 1); |
316 | break; |
317 | } |
318 | } |
319 | |
320 | ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ |
321 | ei_local->dmaing &= ~0x01; |
322 | } |
323 | |
324 | /* definitions for accessing MII/EEPROM interface */ |
325 | |
326 | #define AX_MEMR EI_SHIFT(0x14) |
327 | #define AX_MEMR_MDC BIT(0) |
328 | #define AX_MEMR_MDIR BIT(1) |
329 | #define AX_MEMR_MDI BIT(2) |
330 | #define AX_MEMR_MDO BIT(3) |
331 | #define AX_MEMR_EECS BIT(4) |
332 | #define AX_MEMR_EEI BIT(5) |
333 | #define AX_MEMR_EEO BIT(6) |
334 | #define AX_MEMR_EECLK BIT(7) |
335 | |
336 | static void ax_handle_link_change(struct net_device *dev) |
337 | { |
338 | struct ax_device *ax = to_ax_dev(dev); |
339 | struct phy_device *phy_dev = dev->phydev; |
340 | int status_change = 0; |
341 | |
342 | if (phy_dev->link && ((ax->speed != phy_dev->speed) || |
343 | (ax->duplex != phy_dev->duplex))) { |
344 | |
345 | ax->speed = phy_dev->speed; |
346 | ax->duplex = phy_dev->duplex; |
347 | status_change = 1; |
348 | } |
349 | |
350 | if (phy_dev->link != ax->link) { |
351 | if (!phy_dev->link) { |
352 | ax->speed = 0; |
353 | ax->duplex = -1; |
354 | } |
355 | ax->link = phy_dev->link; |
356 | |
357 | status_change = 1; |
358 | } |
359 | |
360 | if (status_change) |
361 | phy_print_status(phydev: phy_dev); |
362 | } |
363 | |
364 | static int ax_mii_probe(struct net_device *dev) |
365 | { |
366 | struct ax_device *ax = to_ax_dev(dev); |
367 | struct phy_device *phy_dev = NULL; |
368 | int ret; |
369 | |
370 | /* find the first phy */ |
371 | phy_dev = phy_find_first(bus: ax->mii_bus); |
372 | if (!phy_dev) { |
373 | netdev_err(dev, format: "no PHY found\n" ); |
374 | return -ENODEV; |
375 | } |
376 | |
377 | ret = phy_connect_direct(dev, phydev: phy_dev, handler: ax_handle_link_change, |
378 | interface: PHY_INTERFACE_MODE_MII); |
379 | if (ret) { |
380 | netdev_err(dev, format: "Could not attach to PHY\n" ); |
381 | return ret; |
382 | } |
383 | |
384 | phy_set_max_speed(phydev: phy_dev, SPEED_100); |
385 | |
386 | netdev_info(dev, format: "PHY driver [%s] (mii_bus:phy_addr=%s, irq=%d)\n" , |
387 | phy_dev->drv->name, phydev_name(phydev: phy_dev), phy_dev->irq); |
388 | |
389 | return 0; |
390 | } |
391 | |
392 | static void ax_phy_switch(struct net_device *dev, int on) |
393 | { |
394 | struct ei_device *ei_local = netdev_priv(dev); |
395 | struct ax_device *ax = to_ax_dev(dev); |
396 | |
397 | u8 reg_gpoc = ax->plat->gpoc_val; |
398 | |
399 | if (!!on) |
400 | reg_gpoc &= ~AX_GPOC_PPDSET; |
401 | else |
402 | reg_gpoc |= AX_GPOC_PPDSET; |
403 | |
404 | ei_outb(reg_gpoc, ei_local->mem + EI_SHIFT(0x17)); |
405 | } |
406 | |
407 | static void ax_bb_mdc(struct mdiobb_ctrl *ctrl, int level) |
408 | { |
409 | struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl); |
410 | |
411 | if (level) |
412 | ax->reg_memr |= AX_MEMR_MDC; |
413 | else |
414 | ax->reg_memr &= ~AX_MEMR_MDC; |
415 | |
416 | ei_outb(ax->reg_memr, ax->addr_memr); |
417 | } |
418 | |
419 | static void ax_bb_dir(struct mdiobb_ctrl *ctrl, int output) |
420 | { |
421 | struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl); |
422 | |
423 | if (output) |
424 | ax->reg_memr &= ~AX_MEMR_MDIR; |
425 | else |
426 | ax->reg_memr |= AX_MEMR_MDIR; |
427 | |
428 | ei_outb(ax->reg_memr, ax->addr_memr); |
429 | } |
430 | |
431 | static void ax_bb_set_data(struct mdiobb_ctrl *ctrl, int value) |
432 | { |
433 | struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl); |
434 | |
435 | if (value) |
436 | ax->reg_memr |= AX_MEMR_MDO; |
437 | else |
438 | ax->reg_memr &= ~AX_MEMR_MDO; |
439 | |
440 | ei_outb(ax->reg_memr, ax->addr_memr); |
441 | } |
442 | |
443 | static int ax_bb_get_data(struct mdiobb_ctrl *ctrl) |
444 | { |
445 | struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl); |
446 | int reg_memr = ei_inb(ax->addr_memr); |
447 | |
448 | return reg_memr & AX_MEMR_MDI ? 1 : 0; |
449 | } |
450 | |
451 | static const struct mdiobb_ops bb_ops = { |
452 | .owner = THIS_MODULE, |
453 | .set_mdc = ax_bb_mdc, |
454 | .set_mdio_dir = ax_bb_dir, |
455 | .set_mdio_data = ax_bb_set_data, |
456 | .get_mdio_data = ax_bb_get_data, |
457 | }; |
458 | |
459 | static int ax_mii_init(struct net_device *dev) |
460 | { |
461 | struct platform_device *pdev = to_platform_device(dev->dev.parent); |
462 | struct ei_device *ei_local = netdev_priv(dev); |
463 | struct ax_device *ax = to_ax_dev(dev); |
464 | int err; |
465 | |
466 | ax->bb_ctrl.ops = &bb_ops; |
467 | ax->addr_memr = ei_local->mem + AX_MEMR; |
468 | ax->mii_bus = alloc_mdio_bitbang(ctrl: &ax->bb_ctrl); |
469 | if (!ax->mii_bus) { |
470 | err = -ENOMEM; |
471 | goto out; |
472 | } |
473 | |
474 | ax->mii_bus->name = "ax88796_mii_bus" ; |
475 | ax->mii_bus->parent = dev->dev.parent; |
476 | snprintf(buf: ax->mii_bus->id, MII_BUS_ID_SIZE, fmt: "%s-%x" , |
477 | pdev->name, pdev->id); |
478 | |
479 | err = mdiobus_register(ax->mii_bus); |
480 | if (err) |
481 | goto out_free_mdio_bitbang; |
482 | |
483 | return 0; |
484 | |
485 | out_free_mdio_bitbang: |
486 | free_mdio_bitbang(bus: ax->mii_bus); |
487 | out: |
488 | return err; |
489 | } |
490 | |
491 | static int ax_open(struct net_device *dev) |
492 | { |
493 | struct ax_device *ax = to_ax_dev(dev); |
494 | int ret; |
495 | |
496 | netdev_dbg(dev, "open\n" ); |
497 | |
498 | ret = ax_mii_init(dev); |
499 | if (ret) |
500 | goto failed_mii; |
501 | |
502 | if (ax->plat->check_irq) |
503 | ret = request_irq(irq: dev->irq, handler: ax_ei_interrupt_filtered, |
504 | flags: ax->irqflags, name: dev->name, dev); |
505 | else |
506 | ret = request_irq(irq: dev->irq, handler: ax_ei_interrupt, flags: ax->irqflags, |
507 | name: dev->name, dev); |
508 | if (ret) |
509 | goto failed_request_irq; |
510 | |
511 | /* turn the phy on (if turned off) */ |
512 | ax_phy_switch(dev, on: 1); |
513 | |
514 | ret = ax_mii_probe(dev); |
515 | if (ret) |
516 | goto failed_mii_probe; |
517 | phy_start(phydev: dev->phydev); |
518 | |
519 | ret = ax_ei_open(dev); |
520 | if (ret) |
521 | goto failed_ax_ei_open; |
522 | |
523 | ax->running = 1; |
524 | |
525 | return 0; |
526 | |
527 | failed_ax_ei_open: |
528 | phy_disconnect(phydev: dev->phydev); |
529 | failed_mii_probe: |
530 | ax_phy_switch(dev, on: 0); |
531 | free_irq(dev->irq, dev); |
532 | failed_request_irq: |
533 | /* unregister mdiobus */ |
534 | mdiobus_unregister(bus: ax->mii_bus); |
535 | free_mdio_bitbang(bus: ax->mii_bus); |
536 | failed_mii: |
537 | return ret; |
538 | } |
539 | |
540 | static int ax_close(struct net_device *dev) |
541 | { |
542 | struct ax_device *ax = to_ax_dev(dev); |
543 | |
544 | netdev_dbg(dev, "close\n" ); |
545 | |
546 | ax->running = 0; |
547 | wmb(); |
548 | |
549 | ax_ei_close(dev); |
550 | |
551 | /* turn the phy off */ |
552 | ax_phy_switch(dev, on: 0); |
553 | phy_disconnect(phydev: dev->phydev); |
554 | |
555 | free_irq(dev->irq, dev); |
556 | |
557 | mdiobus_unregister(bus: ax->mii_bus); |
558 | free_mdio_bitbang(bus: ax->mii_bus); |
559 | return 0; |
560 | } |
561 | |
562 | static int ax_ioctl(struct net_device *dev, struct ifreq *req, int cmd) |
563 | { |
564 | struct phy_device *phy_dev = dev->phydev; |
565 | |
566 | if (!netif_running(dev)) |
567 | return -EINVAL; |
568 | |
569 | if (!phy_dev) |
570 | return -ENODEV; |
571 | |
572 | return phy_mii_ioctl(phydev: phy_dev, ifr: req, cmd); |
573 | } |
574 | |
575 | /* ethtool ops */ |
576 | |
577 | static void ax_get_drvinfo(struct net_device *dev, |
578 | struct ethtool_drvinfo *info) |
579 | { |
580 | struct platform_device *pdev = to_platform_device(dev->dev.parent); |
581 | |
582 | strscpy(p: info->driver, DRV_NAME, size: sizeof(info->driver)); |
583 | strscpy(p: info->version, DRV_VERSION, size: sizeof(info->version)); |
584 | strscpy(p: info->bus_info, q: pdev->name, size: sizeof(info->bus_info)); |
585 | } |
586 | |
587 | static u32 ax_get_msglevel(struct net_device *dev) |
588 | { |
589 | struct ei_device *ei_local = netdev_priv(dev); |
590 | |
591 | return ei_local->msg_enable; |
592 | } |
593 | |
594 | static void ax_set_msglevel(struct net_device *dev, u32 v) |
595 | { |
596 | struct ei_device *ei_local = netdev_priv(dev); |
597 | |
598 | ei_local->msg_enable = v; |
599 | } |
600 | |
601 | static const struct ethtool_ops ax_ethtool_ops = { |
602 | .get_drvinfo = ax_get_drvinfo, |
603 | .get_link = ethtool_op_get_link, |
604 | .get_ts_info = ethtool_op_get_ts_info, |
605 | .get_msglevel = ax_get_msglevel, |
606 | .set_msglevel = ax_set_msglevel, |
607 | .get_link_ksettings = phy_ethtool_get_link_ksettings, |
608 | .set_link_ksettings = phy_ethtool_set_link_ksettings, |
609 | }; |
610 | |
611 | #ifdef CONFIG_AX88796_93CX6 |
612 | static void ax_eeprom_register_read(struct eeprom_93cx6 *eeprom) |
613 | { |
614 | struct ei_device *ei_local = eeprom->data; |
615 | u8 reg = ei_inb(ei_local->mem + AX_MEMR); |
616 | |
617 | eeprom->reg_data_in = reg & AX_MEMR_EEI; |
618 | eeprom->reg_data_out = reg & AX_MEMR_EEO; /* Input pin */ |
619 | eeprom->reg_data_clock = reg & AX_MEMR_EECLK; |
620 | eeprom->reg_chip_select = reg & AX_MEMR_EECS; |
621 | } |
622 | |
623 | static void ax_eeprom_register_write(struct eeprom_93cx6 *eeprom) |
624 | { |
625 | struct ei_device *ei_local = eeprom->data; |
626 | u8 reg = ei_inb(ei_local->mem + AX_MEMR); |
627 | |
628 | reg &= ~(AX_MEMR_EEI | AX_MEMR_EECLK | AX_MEMR_EECS); |
629 | |
630 | if (eeprom->reg_data_in) |
631 | reg |= AX_MEMR_EEI; |
632 | if (eeprom->reg_data_clock) |
633 | reg |= AX_MEMR_EECLK; |
634 | if (eeprom->reg_chip_select) |
635 | reg |= AX_MEMR_EECS; |
636 | |
637 | ei_outb(reg, ei_local->mem + AX_MEMR); |
638 | udelay(10); |
639 | } |
640 | #endif |
641 | |
642 | static const struct net_device_ops ax_netdev_ops = { |
643 | .ndo_open = ax_open, |
644 | .ndo_stop = ax_close, |
645 | .ndo_eth_ioctl = ax_ioctl, |
646 | |
647 | .ndo_start_xmit = ax_ei_start_xmit, |
648 | .ndo_tx_timeout = ax_ei_tx_timeout, |
649 | .ndo_get_stats = ax_ei_get_stats, |
650 | .ndo_set_rx_mode = ax_ei_set_multicast_list, |
651 | .ndo_validate_addr = eth_validate_addr, |
652 | .ndo_set_mac_address = eth_mac_addr, |
653 | #ifdef CONFIG_NET_POLL_CONTROLLER |
654 | .ndo_poll_controller = ax_ei_poll, |
655 | #endif |
656 | }; |
657 | |
658 | /* setup code */ |
659 | |
660 | static void ax_initial_setup(struct net_device *dev, struct ei_device *ei_local) |
661 | { |
662 | void __iomem *ioaddr = ei_local->mem; |
663 | struct ax_device *ax = to_ax_dev(dev); |
664 | |
665 | /* Select page 0 */ |
666 | ei_outb(E8390_NODMA + E8390_PAGE0 + E8390_STOP, ioaddr + E8390_CMD); |
667 | |
668 | /* set to byte access */ |
669 | ei_outb(ax->plat->dcr_val & ~1, ioaddr + EN0_DCFG); |
670 | ei_outb(ax->plat->gpoc_val, ioaddr + EI_SHIFT(0x17)); |
671 | } |
672 | |
673 | /* |
674 | * ax_init_dev |
675 | * |
676 | * initialise the specified device, taking care to note the MAC |
677 | * address it may already have (if configured), ensure |
678 | * the device is ready to be used by lib8390.c and registerd with |
679 | * the network layer. |
680 | */ |
681 | static int ax_init_dev(struct net_device *dev) |
682 | { |
683 | struct ei_device *ei_local = netdev_priv(dev); |
684 | struct ax_device *ax = to_ax_dev(dev); |
685 | void __iomem *ioaddr = ei_local->mem; |
686 | unsigned int start_page; |
687 | unsigned int stop_page; |
688 | int ret; |
689 | int i; |
690 | |
691 | ret = ax_initial_check(dev); |
692 | if (ret) |
693 | goto err_out; |
694 | |
695 | /* setup goes here */ |
696 | |
697 | ax_initial_setup(dev, ei_local); |
698 | |
699 | /* read the mac from the card prom if we need it */ |
700 | |
701 | if (ax->plat->flags & AXFLG_HAS_EEPROM) { |
702 | unsigned char SA_prom[32]; |
703 | |
704 | ei_outb(6, ioaddr + EN0_RCNTLO); |
705 | ei_outb(0, ioaddr + EN0_RCNTHI); |
706 | ei_outb(0, ioaddr + EN0_RSARLO); |
707 | ei_outb(0, ioaddr + EN0_RSARHI); |
708 | ei_outb(E8390_RREAD + E8390_START, ioaddr + NE_CMD); |
709 | for (i = 0; i < sizeof(SA_prom); i += 2) { |
710 | SA_prom[i] = ei_inb(ioaddr + NE_DATAPORT); |
711 | SA_prom[i + 1] = ei_inb(ioaddr + NE_DATAPORT); |
712 | } |
713 | ei_outb(ENISR_RDC, ioaddr + EN0_ISR); /* Ack intr. */ |
714 | |
715 | if (ax->plat->wordlength == 2) |
716 | for (i = 0; i < 16; i++) |
717 | SA_prom[i] = SA_prom[i+i]; |
718 | |
719 | eth_hw_addr_set(dev, addr: SA_prom); |
720 | } |
721 | |
722 | #ifdef CONFIG_AX88796_93CX6 |
723 | if (ax->plat->flags & AXFLG_HAS_93CX6) { |
724 | unsigned char mac_addr[ETH_ALEN]; |
725 | struct eeprom_93cx6 eeprom; |
726 | |
727 | eeprom.data = ei_local; |
728 | eeprom.register_read = ax_eeprom_register_read; |
729 | eeprom.register_write = ax_eeprom_register_write; |
730 | eeprom.width = PCI_EEPROM_WIDTH_93C56; |
731 | |
732 | eeprom_93cx6_multiread(eeprom: &eeprom, word: 0, |
733 | data: (__le16 __force *)mac_addr, |
734 | words: sizeof(mac_addr) >> 1); |
735 | |
736 | eth_hw_addr_set(dev, addr: mac_addr); |
737 | } |
738 | #endif |
739 | if (ax->plat->wordlength == 2) { |
740 | /* We must set the 8390 for word mode. */ |
741 | ei_outb(ax->plat->dcr_val, ei_local->mem + EN0_DCFG); |
742 | start_page = NESM_START_PG; |
743 | stop_page = NESM_STOP_PG; |
744 | } else { |
745 | start_page = NE1SM_START_PG; |
746 | stop_page = NE1SM_STOP_PG; |
747 | } |
748 | |
749 | /* load the mac-address from the device */ |
750 | if (ax->plat->flags & AXFLG_MAC_FROMDEV) { |
751 | u8 addr[ETH_ALEN]; |
752 | |
753 | ei_outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP, |
754 | ei_local->mem + E8390_CMD); /* 0x61 */ |
755 | for (i = 0; i < ETH_ALEN; i++) |
756 | addr[i] = ei_inb(ioaddr + EN1_PHYS_SHIFT(i)); |
757 | eth_hw_addr_set(dev, addr); |
758 | } |
759 | |
760 | if ((ax->plat->flags & AXFLG_MAC_FROMPLATFORM) && |
761 | ax->plat->mac_addr) |
762 | eth_hw_addr_set(dev, addr: ax->plat->mac_addr); |
763 | |
764 | if (!is_valid_ether_addr(addr: dev->dev_addr)) { |
765 | eth_hw_addr_random(dev); |
766 | dev_info(&dev->dev, "Using random MAC address: %pM\n" , |
767 | dev->dev_addr); |
768 | } |
769 | |
770 | ax_reset_8390(dev); |
771 | |
772 | ei_local->name = "AX88796" ; |
773 | ei_local->tx_start_page = start_page; |
774 | ei_local->stop_page = stop_page; |
775 | ei_local->word16 = (ax->plat->wordlength == 2); |
776 | ei_local->rx_start_page = start_page + TX_PAGES; |
777 | |
778 | #ifdef PACKETBUF_MEMSIZE |
779 | /* Allow the packet buffer size to be overridden by know-it-alls. */ |
780 | ei_local->stop_page = ei_local->tx_start_page + PACKETBUF_MEMSIZE; |
781 | #endif |
782 | |
783 | ei_local->reset_8390 = &ax_reset_8390; |
784 | if (ax->plat->block_input) |
785 | ei_local->block_input = ax->plat->block_input; |
786 | else |
787 | ei_local->block_input = &ax_block_input; |
788 | if (ax->plat->block_output) |
789 | ei_local->block_output = ax->plat->block_output; |
790 | else |
791 | ei_local->block_output = &ax_block_output; |
792 | ei_local->get_8390_hdr = &ax_get_8390_hdr; |
793 | ei_local->priv = 0; |
794 | |
795 | dev->netdev_ops = &ax_netdev_ops; |
796 | dev->ethtool_ops = &ax_ethtool_ops; |
797 | |
798 | ax_NS8390_init(dev, startp: 0); |
799 | |
800 | ret = register_netdev(dev); |
801 | if (ret) |
802 | goto err_out; |
803 | |
804 | netdev_info(dev, format: "%dbit, irq %d, %lx, MAC: %pM\n" , |
805 | ei_local->word16 ? 16 : 8, dev->irq, dev->base_addr, |
806 | dev->dev_addr); |
807 | |
808 | return 0; |
809 | |
810 | err_out: |
811 | return ret; |
812 | } |
813 | |
814 | static void ax_remove(struct platform_device *pdev) |
815 | { |
816 | struct net_device *dev = platform_get_drvdata(pdev); |
817 | struct ei_device *ei_local = netdev_priv(dev); |
818 | struct ax_device *ax = to_ax_dev(dev); |
819 | struct resource *mem; |
820 | |
821 | unregister_netdev(dev); |
822 | |
823 | iounmap(addr: ei_local->mem); |
824 | mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
825 | release_mem_region(mem->start, resource_size(mem)); |
826 | |
827 | if (ax->map2) { |
828 | iounmap(addr: ax->map2); |
829 | mem = platform_get_resource(pdev, IORESOURCE_MEM, 1); |
830 | release_mem_region(mem->start, resource_size(mem)); |
831 | } |
832 | |
833 | platform_set_drvdata(pdev, NULL); |
834 | free_netdev(dev); |
835 | } |
836 | |
837 | /* |
838 | * ax_probe |
839 | * |
840 | * This is the entry point when the platform device system uses to |
841 | * notify us of a new device to attach to. Allocate memory, find the |
842 | * resources and information passed, and map the necessary registers. |
843 | */ |
844 | static int ax_probe(struct platform_device *pdev) |
845 | { |
846 | struct net_device *dev; |
847 | struct ei_device *ei_local; |
848 | struct ax_device *ax; |
849 | struct resource *irq, *mem, *mem2; |
850 | unsigned long mem_size, mem2_size = 0; |
851 | int ret = 0; |
852 | |
853 | dev = ax__alloc_ei_netdev(size: sizeof(struct ax_device)); |
854 | if (dev == NULL) |
855 | return -ENOMEM; |
856 | |
857 | /* ok, let's setup our device */ |
858 | SET_NETDEV_DEV(dev, &pdev->dev); |
859 | ei_local = netdev_priv(dev); |
860 | ax = to_ax_dev(dev); |
861 | |
862 | ax->plat = dev_get_platdata(dev: &pdev->dev); |
863 | platform_set_drvdata(pdev, data: dev); |
864 | |
865 | ei_local->rxcr_base = ax->plat->rcr_val; |
866 | |
867 | /* find the platform resources */ |
868 | irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
869 | if (!irq) { |
870 | dev_err(&pdev->dev, "no IRQ specified\n" ); |
871 | ret = -ENXIO; |
872 | goto exit_mem; |
873 | } |
874 | |
875 | dev->irq = irq->start; |
876 | ax->irqflags = irq->flags & IRQF_TRIGGER_MASK; |
877 | |
878 | if (irq->flags & IORESOURCE_IRQ_SHAREABLE) |
879 | ax->irqflags |= IRQF_SHARED; |
880 | |
881 | mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
882 | if (!mem) { |
883 | dev_err(&pdev->dev, "no MEM specified\n" ); |
884 | ret = -ENXIO; |
885 | goto exit_mem; |
886 | } |
887 | |
888 | mem_size = resource_size(res: mem); |
889 | |
890 | /* |
891 | * setup the register offsets from either the platform data or |
892 | * by using the size of the resource provided |
893 | */ |
894 | if (ax->plat->reg_offsets) |
895 | ei_local->reg_offset = ax->plat->reg_offsets; |
896 | else { |
897 | ei_local->reg_offset = ax->reg_offsets; |
898 | for (ret = 0; ret < 0x18; ret++) |
899 | ax->reg_offsets[ret] = (mem_size / 0x18) * ret; |
900 | } |
901 | |
902 | if (!request_mem_region(mem->start, mem_size, pdev->name)) { |
903 | dev_err(&pdev->dev, "cannot reserve registers\n" ); |
904 | ret = -ENXIO; |
905 | goto exit_mem; |
906 | } |
907 | |
908 | ei_local->mem = ioremap(offset: mem->start, size: mem_size); |
909 | dev->base_addr = (unsigned long)ei_local->mem; |
910 | |
911 | if (ei_local->mem == NULL) { |
912 | dev_err(&pdev->dev, "Cannot ioremap area %pR\n" , mem); |
913 | |
914 | ret = -ENXIO; |
915 | goto exit_req; |
916 | } |
917 | |
918 | /* look for reset area */ |
919 | mem2 = platform_get_resource(pdev, IORESOURCE_MEM, 1); |
920 | if (!mem2) { |
921 | if (!ax->plat->reg_offsets) { |
922 | for (ret = 0; ret < 0x20; ret++) |
923 | ax->reg_offsets[ret] = (mem_size / 0x20) * ret; |
924 | } |
925 | } else { |
926 | mem2_size = resource_size(res: mem2); |
927 | |
928 | if (!request_mem_region(mem2->start, mem2_size, pdev->name)) { |
929 | dev_err(&pdev->dev, "cannot reserve registers\n" ); |
930 | ret = -ENXIO; |
931 | goto exit_mem1; |
932 | } |
933 | |
934 | ax->map2 = ioremap(offset: mem2->start, size: mem2_size); |
935 | if (!ax->map2) { |
936 | dev_err(&pdev->dev, "cannot map reset register\n" ); |
937 | ret = -ENXIO; |
938 | goto exit_mem2; |
939 | } |
940 | |
941 | ei_local->reg_offset[0x1f] = ax->map2 - ei_local->mem; |
942 | } |
943 | |
944 | /* got resources, now initialise and register device */ |
945 | ret = ax_init_dev(dev); |
946 | if (!ret) |
947 | return 0; |
948 | |
949 | if (!ax->map2) |
950 | goto exit_mem1; |
951 | |
952 | iounmap(addr: ax->map2); |
953 | |
954 | exit_mem2: |
955 | if (mem2) |
956 | release_mem_region(mem2->start, mem2_size); |
957 | |
958 | exit_mem1: |
959 | iounmap(addr: ei_local->mem); |
960 | |
961 | exit_req: |
962 | release_mem_region(mem->start, mem_size); |
963 | |
964 | exit_mem: |
965 | platform_set_drvdata(pdev, NULL); |
966 | free_netdev(dev); |
967 | |
968 | return ret; |
969 | } |
970 | |
971 | /* suspend and resume */ |
972 | |
973 | #ifdef CONFIG_PM |
974 | static int ax_suspend(struct platform_device *dev, pm_message_t state) |
975 | { |
976 | struct net_device *ndev = platform_get_drvdata(pdev: dev); |
977 | struct ax_device *ax = to_ax_dev(dev: ndev); |
978 | |
979 | ax->resume_open = ax->running; |
980 | |
981 | netif_device_detach(dev: ndev); |
982 | ax_close(dev: ndev); |
983 | |
984 | return 0; |
985 | } |
986 | |
987 | static int ax_resume(struct platform_device *pdev) |
988 | { |
989 | struct net_device *ndev = platform_get_drvdata(pdev); |
990 | struct ax_device *ax = to_ax_dev(dev: ndev); |
991 | |
992 | ax_initial_setup(dev: ndev, ei_local: netdev_priv(dev: ndev)); |
993 | ax_NS8390_init(dev: ndev, startp: ax->resume_open); |
994 | netif_device_attach(dev: ndev); |
995 | |
996 | if (ax->resume_open) |
997 | ax_open(dev: ndev); |
998 | |
999 | return 0; |
1000 | } |
1001 | |
1002 | #else |
1003 | #define ax_suspend NULL |
1004 | #define ax_resume NULL |
1005 | #endif |
1006 | |
1007 | static struct platform_driver axdrv = { |
1008 | .driver = { |
1009 | .name = "ax88796" , |
1010 | }, |
1011 | .probe = ax_probe, |
1012 | .remove_new = ax_remove, |
1013 | .suspend = ax_suspend, |
1014 | .resume = ax_resume, |
1015 | }; |
1016 | |
1017 | module_platform_driver(axdrv); |
1018 | |
1019 | MODULE_DESCRIPTION("AX88796 10/100 Ethernet platform driver" ); |
1020 | MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>" ); |
1021 | MODULE_LICENSE("GPL v2" ); |
1022 | MODULE_ALIAS("platform:ax88796" ); |
1023 | |