Merge remote-tracking branch 'cleancache/linux-next'
[linux-2.6/next.git] / drivers / net / ax88796.c
blobe7cb8c8b9776441a58040c1e2b8ec9bb17cd1f21
1 /* drivers/net/ax88796.c
3 * Copyright 2005,2007 Simtec Electronics
4 * Ben Dooks <ben@simtec.co.uk>
6 * Asix AX88796 10/100 Ethernet controller support
7 * Based on ne.c, by Donald Becker, et-al.
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.
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/io.h>
21 #include <linux/platform_device.h>
22 #include <linux/delay.h>
23 #include <linux/timer.h>
24 #include <linux/netdevice.h>
25 #include <linux/etherdevice.h>
26 #include <linux/ethtool.h>
27 #include <linux/mdio-bitbang.h>
28 #include <linux/phy.h>
29 #include <linux/eeprom_93cx6.h>
30 #include <linux/slab.h>
32 #include <net/ax88796.h>
34 #include <asm/system.h>
36 /* Rename the lib8390.c functions to show that they are in this driver */
37 #define __ei_open ax_ei_open
38 #define __ei_close ax_ei_close
39 #define __ei_poll ax_ei_poll
40 #define __ei_start_xmit ax_ei_start_xmit
41 #define __ei_tx_timeout ax_ei_tx_timeout
42 #define __ei_get_stats ax_ei_get_stats
43 #define __ei_set_multicast_list ax_ei_set_multicast_list
44 #define __ei_interrupt ax_ei_interrupt
45 #define ____alloc_ei_netdev ax__alloc_ei_netdev
46 #define __NS8390_init ax_NS8390_init
48 /* force unsigned long back to 'void __iomem *' */
49 #define ax_convert_addr(_a) ((void __force __iomem *)(_a))
51 #define ei_inb(_a) readb(ax_convert_addr(_a))
52 #define ei_outb(_v, _a) writeb(_v, ax_convert_addr(_a))
54 #define ei_inb_p(_a) ei_inb(_a)
55 #define ei_outb_p(_v, _a) ei_outb(_v, _a)
57 /* define EI_SHIFT() to take into account our register offsets */
58 #define EI_SHIFT(x) (ei_local->reg_offset[(x)])
60 /* Ensure we have our RCR base value */
61 #define AX88796_PLATFORM
63 static unsigned char version[] = "ax88796.c: Copyright 2005,2007 Simtec Electronics\n";
65 #include "lib8390.c"
67 #define DRV_NAME "ax88796"
68 #define DRV_VERSION "1.00"
70 /* from ne.c */
71 #define NE_CMD EI_SHIFT(0x00)
72 #define NE_RESET EI_SHIFT(0x1f)
73 #define NE_DATAPORT EI_SHIFT(0x10)
75 #define NE1SM_START_PG 0x20 /* First page of TX buffer */
76 #define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
77 #define NESM_START_PG 0x40 /* First page of TX buffer */
78 #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
80 #define AX_GPOC_PPDSET BIT(6)
82 /* device private data */
84 struct 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;
94 void __iomem *map2;
95 const struct ax_plat_data *plat;
97 unsigned char running;
98 unsigned char resume_open;
99 unsigned int irqflags;
101 u32 reg_offsets[0x20];
104 static inline struct ax_device *to_ax_dev(struct net_device *dev)
106 struct ei_device *ei_local = netdev_priv(dev);
107 return (struct ax_device *)(ei_local + 1);
111 * ax_initial_check
113 * do an initial probe for the card to check wether it exists
114 * and is functional
116 static int ax_initial_check(struct net_device *dev)
118 struct ei_device *ei_local = netdev_priv(dev);
119 void __iomem *ioaddr = ei_local->mem;
120 int reg0;
121 int regd;
123 reg0 = ei_inb(ioaddr);
124 if (reg0 == 0xFF)
125 return -ENODEV;
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;
138 return 0;
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.
145 static void ax_reset_8390(struct net_device *dev)
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;
151 if (ei_debug > 1)
152 netdev_dbg(dev, "resetting the 8390 t=%ld\n", jiffies);
154 ei_outb(ei_inb(addr + NE_RESET), addr + NE_RESET);
156 ei_local->txing = 0;
157 ei_local->dmaing = 0;
159 /* This check _should_not_ be necessary, omit eventually. */
160 while ((ei_inb(addr + EN0_ISR) & ENISR_RESET) == 0) {
161 if (jiffies - reset_start_time > 2 * HZ / 100) {
162 netdev_warn(dev, "%s: did not complete.\n", __func__);
163 break;
167 ei_outb(ENISR_RESET, addr + EN0_ISR); /* Ack intr. */
171 static void ax_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
172 int ring_page)
174 struct ei_device *ei_local = netdev_priv(dev);
175 void __iomem *nic_base = ei_local->mem;
177 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
178 if (ei_local->dmaing) {
179 netdev_err(dev, "DMAing conflict in %s "
180 "[DMAstat:%d][irqlock:%d].\n",
181 __func__,
182 ei_local->dmaing, ei_local->irqlock);
183 return;
186 ei_local->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);
194 if (ei_local->word16)
195 readsw(nic_base + NE_DATAPORT, hdr,
196 sizeof(struct e8390_pkt_hdr) >> 1);
197 else
198 readsb(nic_base + NE_DATAPORT, hdr,
199 sizeof(struct e8390_pkt_hdr));
201 ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
202 ei_local->dmaing &= ~0x01;
204 le16_to_cpus(&hdr->count);
209 * Block input and output, similar to the Crynwr packet driver. If
210 * you are porting to a new ethercard, look at the packet driver
211 * source for hints. The NEx000 doesn't share the on-board packet
212 * memory -- you have to put the packet out through the "remote DMA"
213 * dataport using ei_outb.
215 static void ax_block_input(struct net_device *dev, int count,
216 struct sk_buff *skb, int ring_offset)
218 struct ei_device *ei_local = netdev_priv(dev);
219 void __iomem *nic_base = ei_local->mem;
220 char *buf = skb->data;
222 if (ei_local->dmaing) {
223 netdev_err(dev,
224 "DMAing conflict in %s "
225 "[DMAstat:%d][irqlock:%d].\n",
226 __func__,
227 ei_local->dmaing, ei_local->irqlock);
228 return;
231 ei_local->dmaing |= 0x01;
233 ei_outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base + NE_CMD);
234 ei_outb(count & 0xff, nic_base + EN0_RCNTLO);
235 ei_outb(count >> 8, nic_base + EN0_RCNTHI);
236 ei_outb(ring_offset & 0xff, nic_base + EN0_RSARLO);
237 ei_outb(ring_offset >> 8, nic_base + EN0_RSARHI);
238 ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
240 if (ei_local->word16) {
241 readsw(nic_base + NE_DATAPORT, buf, count >> 1);
242 if (count & 0x01)
243 buf[count-1] = ei_inb(nic_base + NE_DATAPORT);
245 } else {
246 readsb(nic_base + NE_DATAPORT, buf, count);
249 ei_local->dmaing &= ~1;
252 static void ax_block_output(struct net_device *dev, int count,
253 const unsigned char *buf, const int start_page)
255 struct ei_device *ei_local = netdev_priv(dev);
256 void __iomem *nic_base = ei_local->mem;
257 unsigned long dma_start;
260 * Round the count up for word writes. Do we need to do this?
261 * What effect will an odd byte count have on the 8390? I
262 * should check someday.
264 if (ei_local->word16 && (count & 0x01))
265 count++;
267 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
268 if (ei_local->dmaing) {
269 netdev_err(dev, "DMAing conflict in %s."
270 "[DMAstat:%d][irqlock:%d]\n",
271 __func__,
272 ei_local->dmaing, ei_local->irqlock);
273 return;
276 ei_local->dmaing |= 0x01;
277 /* We should already be in page 0, but to be safe... */
278 ei_outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
280 ei_outb(ENISR_RDC, nic_base + EN0_ISR);
282 /* Now the normal output. */
283 ei_outb(count & 0xff, nic_base + EN0_RCNTLO);
284 ei_outb(count >> 8, nic_base + EN0_RCNTHI);
285 ei_outb(0x00, nic_base + EN0_RSARLO);
286 ei_outb(start_page, nic_base + EN0_RSARHI);
288 ei_outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
289 if (ei_local->word16)
290 writesw(nic_base + NE_DATAPORT, buf, count >> 1);
291 else
292 writesb(nic_base + NE_DATAPORT, buf, count);
294 dma_start = jiffies;
296 while ((ei_inb(nic_base + EN0_ISR) & ENISR_RDC) == 0) {
297 if (jiffies - dma_start > 2 * HZ / 100) { /* 20ms */
298 netdev_warn(dev, "timeout waiting for Tx RDC.\n");
299 ax_reset_8390(dev);
300 ax_NS8390_init(dev, 1);
301 break;
305 ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
306 ei_local->dmaing &= ~0x01;
309 /* definitions for accessing MII/EEPROM interface */
311 #define AX_MEMR EI_SHIFT(0x14)
312 #define AX_MEMR_MDC BIT(0)
313 #define AX_MEMR_MDIR BIT(1)
314 #define AX_MEMR_MDI BIT(2)
315 #define AX_MEMR_MDO BIT(3)
316 #define AX_MEMR_EECS BIT(4)
317 #define AX_MEMR_EEI BIT(5)
318 #define AX_MEMR_EEO BIT(6)
319 #define AX_MEMR_EECLK BIT(7)
321 static void ax_handle_link_change(struct net_device *dev)
323 struct ax_device *ax = to_ax_dev(dev);
324 struct phy_device *phy_dev = ax->phy_dev;
325 int status_change = 0;
327 if (phy_dev->link && ((ax->speed != phy_dev->speed) ||
328 (ax->duplex != phy_dev->duplex))) {
330 ax->speed = phy_dev->speed;
331 ax->duplex = phy_dev->duplex;
332 status_change = 1;
335 if (phy_dev->link != ax->link) {
336 if (!phy_dev->link) {
337 ax->speed = 0;
338 ax->duplex = -1;
340 ax->link = phy_dev->link;
342 status_change = 1;
345 if (status_change)
346 phy_print_status(phy_dev);
349 static int ax_mii_probe(struct net_device *dev)
351 struct ax_device *ax = to_ax_dev(dev);
352 struct phy_device *phy_dev = NULL;
353 int ret;
355 /* find the first phy */
356 phy_dev = phy_find_first(ax->mii_bus);
357 if (!phy_dev) {
358 netdev_err(dev, "no PHY found\n");
359 return -ENODEV;
362 ret = phy_connect_direct(dev, phy_dev, ax_handle_link_change, 0,
363 PHY_INTERFACE_MODE_MII);
364 if (ret) {
365 netdev_err(dev, "Could not attach to PHY\n");
366 return ret;
369 /* mask with MAC supported features */
370 phy_dev->supported &= PHY_BASIC_FEATURES;
371 phy_dev->advertising = phy_dev->supported;
373 ax->phy_dev = phy_dev;
375 netdev_info(dev, "PHY driver [%s] (mii_bus:phy_addr=%s, irq=%d)\n",
376 phy_dev->drv->name, dev_name(&phy_dev->dev), phy_dev->irq);
378 return 0;
381 static void ax_phy_switch(struct net_device *dev, int on)
383 struct ei_device *ei_local = netdev_priv(dev);
384 struct ax_device *ax = to_ax_dev(dev);
386 u8 reg_gpoc = ax->plat->gpoc_val;
388 if (!!on)
389 reg_gpoc &= ~AX_GPOC_PPDSET;
390 else
391 reg_gpoc |= AX_GPOC_PPDSET;
393 ei_outb(reg_gpoc, ei_local->mem + EI_SHIFT(0x17));
396 static int ax_open(struct net_device *dev)
398 struct ax_device *ax = to_ax_dev(dev);
399 int ret;
401 netdev_dbg(dev, "open\n");
403 ret = request_irq(dev->irq, ax_ei_interrupt, ax->irqflags,
404 dev->name, dev);
405 if (ret)
406 goto failed_request_irq;
408 /* turn the phy on (if turned off) */
409 ax_phy_switch(dev, 1);
411 ret = ax_mii_probe(dev);
412 if (ret)
413 goto failed_mii_probe;
414 phy_start(ax->phy_dev);
416 ret = ax_ei_open(dev);
417 if (ret)
418 goto failed_ax_ei_open;
420 ax->running = 1;
422 return 0;
424 failed_ax_ei_open:
425 phy_disconnect(ax->phy_dev);
426 failed_mii_probe:
427 ax_phy_switch(dev, 0);
428 free_irq(dev->irq, dev);
429 failed_request_irq:
430 return ret;
433 static int ax_close(struct net_device *dev)
435 struct ax_device *ax = to_ax_dev(dev);
437 netdev_dbg(dev, "close\n");
439 ax->running = 0;
440 wmb();
442 ax_ei_close(dev);
444 /* turn the phy off */
445 ax_phy_switch(dev, 0);
446 phy_disconnect(ax->phy_dev);
448 free_irq(dev->irq, dev);
449 return 0;
452 static int ax_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
454 struct ax_device *ax = to_ax_dev(dev);
455 struct phy_device *phy_dev = ax->phy_dev;
457 if (!netif_running(dev))
458 return -EINVAL;
460 if (!phy_dev)
461 return -ENODEV;
463 return phy_mii_ioctl(phy_dev, req, cmd);
466 /* ethtool ops */
468 static void ax_get_drvinfo(struct net_device *dev,
469 struct ethtool_drvinfo *info)
471 struct platform_device *pdev = to_platform_device(dev->dev.parent);
473 strcpy(info->driver, DRV_NAME);
474 strcpy(info->version, DRV_VERSION);
475 strcpy(info->bus_info, pdev->name);
478 static int ax_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
480 struct ax_device *ax = to_ax_dev(dev);
481 struct phy_device *phy_dev = ax->phy_dev;
483 if (!phy_dev)
484 return -ENODEV;
486 return phy_ethtool_gset(phy_dev, cmd);
489 static int ax_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
491 struct ax_device *ax = to_ax_dev(dev);
492 struct phy_device *phy_dev = ax->phy_dev;
494 if (!phy_dev)
495 return -ENODEV;
497 return phy_ethtool_sset(phy_dev, cmd);
500 static const struct ethtool_ops ax_ethtool_ops = {
501 .get_drvinfo = ax_get_drvinfo,
502 .get_settings = ax_get_settings,
503 .set_settings = ax_set_settings,
504 .get_link = ethtool_op_get_link,
507 #ifdef CONFIG_AX88796_93CX6
508 static void ax_eeprom_register_read(struct eeprom_93cx6 *eeprom)
510 struct ei_device *ei_local = eeprom->data;
511 u8 reg = ei_inb(ei_local->mem + AX_MEMR);
513 eeprom->reg_data_in = reg & AX_MEMR_EEI;
514 eeprom->reg_data_out = reg & AX_MEMR_EEO; /* Input pin */
515 eeprom->reg_data_clock = reg & AX_MEMR_EECLK;
516 eeprom->reg_chip_select = reg & AX_MEMR_EECS;
519 static void ax_eeprom_register_write(struct eeprom_93cx6 *eeprom)
521 struct ei_device *ei_local = eeprom->data;
522 u8 reg = ei_inb(ei_local->mem + AX_MEMR);
524 reg &= ~(AX_MEMR_EEI | AX_MEMR_EECLK | AX_MEMR_EECS);
526 if (eeprom->reg_data_in)
527 reg |= AX_MEMR_EEI;
528 if (eeprom->reg_data_clock)
529 reg |= AX_MEMR_EECLK;
530 if (eeprom->reg_chip_select)
531 reg |= AX_MEMR_EECS;
533 ei_outb(reg, ei_local->mem + AX_MEMR);
534 udelay(10);
536 #endif
538 static const struct net_device_ops ax_netdev_ops = {
539 .ndo_open = ax_open,
540 .ndo_stop = ax_close,
541 .ndo_do_ioctl = ax_ioctl,
543 .ndo_start_xmit = ax_ei_start_xmit,
544 .ndo_tx_timeout = ax_ei_tx_timeout,
545 .ndo_get_stats = ax_ei_get_stats,
546 .ndo_set_multicast_list = ax_ei_set_multicast_list,
547 .ndo_validate_addr = eth_validate_addr,
548 .ndo_set_mac_address = eth_mac_addr,
549 .ndo_change_mtu = eth_change_mtu,
550 #ifdef CONFIG_NET_POLL_CONTROLLER
551 .ndo_poll_controller = ax_ei_poll,
552 #endif
555 static void ax_bb_mdc(struct mdiobb_ctrl *ctrl, int level)
557 struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl);
559 if (level)
560 ax->reg_memr |= AX_MEMR_MDC;
561 else
562 ax->reg_memr &= ~AX_MEMR_MDC;
564 ei_outb(ax->reg_memr, ax->addr_memr);
567 static void ax_bb_dir(struct mdiobb_ctrl *ctrl, int output)
569 struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl);
571 if (output)
572 ax->reg_memr &= ~AX_MEMR_MDIR;
573 else
574 ax->reg_memr |= AX_MEMR_MDIR;
576 ei_outb(ax->reg_memr, ax->addr_memr);
579 static void ax_bb_set_data(struct mdiobb_ctrl *ctrl, int value)
581 struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl);
583 if (value)
584 ax->reg_memr |= AX_MEMR_MDO;
585 else
586 ax->reg_memr &= ~AX_MEMR_MDO;
588 ei_outb(ax->reg_memr, ax->addr_memr);
591 static int ax_bb_get_data(struct mdiobb_ctrl *ctrl)
593 struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl);
594 int reg_memr = ei_inb(ax->addr_memr);
596 return reg_memr & AX_MEMR_MDI ? 1 : 0;
599 static struct mdiobb_ops bb_ops = {
600 .owner = THIS_MODULE,
601 .set_mdc = ax_bb_mdc,
602 .set_mdio_dir = ax_bb_dir,
603 .set_mdio_data = ax_bb_set_data,
604 .get_mdio_data = ax_bb_get_data,
607 /* setup code */
609 static int ax_mii_init(struct net_device *dev)
611 struct platform_device *pdev = to_platform_device(dev->dev.parent);
612 struct ei_device *ei_local = netdev_priv(dev);
613 struct ax_device *ax = to_ax_dev(dev);
614 int err, i;
616 ax->bb_ctrl.ops = &bb_ops;
617 ax->addr_memr = ei_local->mem + AX_MEMR;
618 ax->mii_bus = alloc_mdio_bitbang(&ax->bb_ctrl);
619 if (!ax->mii_bus) {
620 err = -ENOMEM;
621 goto out;
624 ax->mii_bus->name = "ax88796_mii_bus";
625 ax->mii_bus->parent = dev->dev.parent;
626 snprintf(ax->mii_bus->id, MII_BUS_ID_SIZE, "%x", pdev->id);
628 ax->mii_bus->irq = kmalloc(sizeof(int) * PHY_MAX_ADDR, GFP_KERNEL);
629 if (!ax->mii_bus->irq) {
630 err = -ENOMEM;
631 goto out_free_mdio_bitbang;
634 for (i = 0; i < PHY_MAX_ADDR; i++)
635 ax->mii_bus->irq[i] = PHY_POLL;
637 err = mdiobus_register(ax->mii_bus);
638 if (err)
639 goto out_free_irq;
641 return 0;
643 out_free_irq:
644 kfree(ax->mii_bus->irq);
645 out_free_mdio_bitbang:
646 free_mdio_bitbang(ax->mii_bus);
647 out:
648 return err;
651 static void ax_initial_setup(struct net_device *dev, struct ei_device *ei_local)
653 void __iomem *ioaddr = ei_local->mem;
654 struct ax_device *ax = to_ax_dev(dev);
656 /* Select page 0 */
657 ei_outb(E8390_NODMA + E8390_PAGE0 + E8390_STOP, ioaddr + E8390_CMD);
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));
665 * ax_init_dev
667 * initialise the specified device, taking care to note the MAC
668 * address it may already have (if configured), ensure
669 * the device is ready to be used by lib8390.c and registerd with
670 * the network layer.
672 static int ax_init_dev(struct net_device *dev)
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;
682 ret = ax_initial_check(dev);
683 if (ret)
684 goto err_out;
686 /* setup goes here */
688 ax_initial_setup(dev, ei_local);
690 /* read the mac from the card prom if we need it */
692 if (ax->plat->flags & AXFLG_HAS_EEPROM) {
693 unsigned char SA_prom[32];
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);
700 if (ax->plat->wordlength == 2)
701 for (i = 0; i < 16; i++)
702 SA_prom[i] = SA_prom[i+i];
704 memcpy(dev->dev_addr, SA_prom, 6);
707 #ifdef CONFIG_AX88796_93CX6
708 if (ax->plat->flags & AXFLG_HAS_93CX6) {
709 unsigned char mac_addr[6];
710 struct eeprom_93cx6 eeprom;
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;
717 eeprom_93cx6_multiread(&eeprom, 0,
718 (__le16 __force *)mac_addr,
719 sizeof(mac_addr) >> 1);
721 memcpy(dev->dev_addr, mac_addr, 6);
723 #endif
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;
734 /* load the mac-address from the device */
735 if (ax->plat->flags & AXFLG_MAC_FROMDEV) {
736 ei_outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP,
737 ei_local->mem + E8390_CMD); /* 0x61 */
738 for (i = 0; i < ETHER_ADDR_LEN; i++)
739 dev->dev_addr[i] =
740 ei_inb(ioaddr + EN1_PHYS_SHIFT(i));
743 if ((ax->plat->flags & AXFLG_MAC_FROMPLATFORM) &&
744 ax->plat->mac_addr)
745 memcpy(dev->dev_addr, ax->plat->mac_addr,
746 ETHER_ADDR_LEN);
748 ax_reset_8390(dev);
750 ei_local->name = "AX88796";
751 ei_local->tx_start_page = start_page;
752 ei_local->stop_page = stop_page;
753 ei_local->word16 = (ax->plat->wordlength == 2);
754 ei_local->rx_start_page = start_page + TX_PAGES;
756 #ifdef PACKETBUF_MEMSIZE
757 /* Allow the packet buffer size to be overridden by know-it-alls. */
758 ei_local->stop_page = ei_local->tx_start_page + PACKETBUF_MEMSIZE;
759 #endif
761 ei_local->reset_8390 = &ax_reset_8390;
762 ei_local->block_input = &ax_block_input;
763 ei_local->block_output = &ax_block_output;
764 ei_local->get_8390_hdr = &ax_get_8390_hdr;
765 ei_local->priv = 0;
767 dev->netdev_ops = &ax_netdev_ops;
768 dev->ethtool_ops = &ax_ethtool_ops;
770 ret = ax_mii_init(dev);
771 if (ret)
772 goto out_irq;
774 ax_NS8390_init(dev, 0);
776 ret = register_netdev(dev);
777 if (ret)
778 goto out_irq;
780 netdev_info(dev, "%dbit, irq %d, %lx, MAC: %pM\n",
781 ei_local->word16 ? 16 : 8, dev->irq, dev->base_addr,
782 dev->dev_addr);
784 return 0;
786 out_irq:
787 /* cleanup irq */
788 free_irq(dev->irq, dev);
789 err_out:
790 return ret;
793 static int ax_remove(struct platform_device *pdev)
795 struct net_device *dev = platform_get_drvdata(pdev);
796 struct ei_device *ei_local = netdev_priv(dev);
797 struct ax_device *ax = to_ax_dev(dev);
798 struct resource *mem;
800 unregister_netdev(dev);
801 free_irq(dev->irq, dev);
803 iounmap(ei_local->mem);
804 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
805 release_mem_region(mem->start, resource_size(mem));
807 if (ax->map2) {
808 iounmap(ax->map2);
809 mem = platform_get_resource(pdev, IORESOURCE_MEM, 1);
810 release_mem_region(mem->start, resource_size(mem));
813 free_netdev(dev);
815 return 0;
819 * ax_probe
821 * This is the entry point when the platform device system uses to
822 * notify us of a new device to attach to. Allocate memory, find the
823 * resources and information passed, and map the necessary registers.
825 static int ax_probe(struct platform_device *pdev)
827 struct net_device *dev;
828 struct ei_device *ei_local;
829 struct ax_device *ax;
830 struct resource *irq, *mem, *mem2;
831 resource_size_t mem_size, mem2_size = 0;
832 int ret = 0;
834 dev = ax__alloc_ei_netdev(sizeof(struct ax_device));
835 if (dev == NULL)
836 return -ENOMEM;
838 /* ok, let's setup our device */
839 SET_NETDEV_DEV(dev, &pdev->dev);
840 ei_local = netdev_priv(dev);
841 ax = to_ax_dev(dev);
843 ax->plat = pdev->dev.platform_data;
844 platform_set_drvdata(pdev, dev);
846 ei_local->rxcr_base = ax->plat->rcr_val;
848 /* find the platform resources */
849 irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
850 if (!irq) {
851 dev_err(&pdev->dev, "no IRQ specified\n");
852 ret = -ENXIO;
853 goto exit_mem;
856 dev->irq = irq->start;
857 ax->irqflags = irq->flags & IRQF_TRIGGER_MASK;
859 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
860 if (!mem) {
861 dev_err(&pdev->dev, "no MEM specified\n");
862 ret = -ENXIO;
863 goto exit_mem;
866 mem_size = resource_size(mem);
869 * setup the register offsets from either the platform data or
870 * by using the size of the resource provided
872 if (ax->plat->reg_offsets)
873 ei_local->reg_offset = ax->plat->reg_offsets;
874 else {
875 ei_local->reg_offset = ax->reg_offsets;
876 for (ret = 0; ret < 0x18; ret++)
877 ax->reg_offsets[ret] = (mem_size / 0x18) * ret;
880 if (!request_mem_region(mem->start, mem_size, pdev->name)) {
881 dev_err(&pdev->dev, "cannot reserve registers\n");
882 ret = -ENXIO;
883 goto exit_mem;
886 ei_local->mem = ioremap(mem->start, mem_size);
887 dev->base_addr = (unsigned long)ei_local->mem;
889 if (ei_local->mem == NULL) {
890 dev_err(&pdev->dev, "Cannot ioremap area %pR\n", mem);
892 ret = -ENXIO;
893 goto exit_req;
896 /* look for reset area */
897 mem2 = platform_get_resource(pdev, IORESOURCE_MEM, 1);
898 if (!mem2) {
899 if (!ax->plat->reg_offsets) {
900 for (ret = 0; ret < 0x20; ret++)
901 ax->reg_offsets[ret] = (mem_size / 0x20) * ret;
903 } else {
904 mem2_size = resource_size(mem2);
906 if (!request_mem_region(mem2->start, mem2_size, pdev->name)) {
907 dev_err(&pdev->dev, "cannot reserve registers\n");
908 ret = -ENXIO;
909 goto exit_mem1;
912 ax->map2 = ioremap(mem2->start, mem2_size);
913 if (!ax->map2) {
914 dev_err(&pdev->dev, "cannot map reset register\n");
915 ret = -ENXIO;
916 goto exit_mem2;
919 ei_local->reg_offset[0x1f] = ax->map2 - ei_local->mem;
922 /* got resources, now initialise and register device */
923 ret = ax_init_dev(dev);
924 if (!ret)
925 return 0;
927 if (!ax->map2)
928 goto exit_mem1;
930 iounmap(ax->map2);
932 exit_mem2:
933 release_mem_region(mem2->start, mem2_size);
935 exit_mem1:
936 iounmap(ei_local->mem);
938 exit_req:
939 release_mem_region(mem->start, mem_size);
941 exit_mem:
942 free_netdev(dev);
944 return ret;
947 /* suspend and resume */
949 #ifdef CONFIG_PM
950 static int ax_suspend(struct platform_device *dev, pm_message_t state)
952 struct net_device *ndev = platform_get_drvdata(dev);
953 struct ax_device *ax = to_ax_dev(ndev);
955 ax->resume_open = ax->running;
957 netif_device_detach(ndev);
958 ax_close(ndev);
960 return 0;
963 static int ax_resume(struct platform_device *pdev)
965 struct net_device *ndev = platform_get_drvdata(pdev);
966 struct ax_device *ax = to_ax_dev(ndev);
968 ax_initial_setup(ndev, netdev_priv(ndev));
969 ax_NS8390_init(ndev, ax->resume_open);
970 netif_device_attach(ndev);
972 if (ax->resume_open)
973 ax_open(ndev);
975 return 0;
978 #else
979 #define ax_suspend NULL
980 #define ax_resume NULL
981 #endif
983 static struct platform_driver axdrv = {
984 .driver = {
985 .name = "ax88796",
986 .owner = THIS_MODULE,
988 .probe = ax_probe,
989 .remove = ax_remove,
990 .suspend = ax_suspend,
991 .resume = ax_resume,
994 static int __init axdrv_init(void)
996 return platform_driver_register(&axdrv);
999 static void __exit axdrv_exit(void)
1001 platform_driver_unregister(&axdrv);
1004 module_init(axdrv_init);
1005 module_exit(axdrv_exit);
1007 MODULE_DESCRIPTION("AX88796 10/100 Ethernet platform driver");
1008 MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>");
1009 MODULE_LICENSE("GPL v2");
1010 MODULE_ALIAS("platform:ax88796");