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