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Ben Dooks825a2ff2007-07-03 16:53:09 +01001/* 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.
Marc Kleine-Budde9f072422011-02-19 17:07:40 +010012 */
Ben Dooks825a2ff2007-07-03 16:53:09 +010013
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>
Marc Kleine-Budde9f072422011-02-19 17:07:40 +010020#include <linux/io.h>
Ben Dooks825a2ff2007-07-03 16:53:09 +010021#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/mii.h>
Magnus Damm89e536a2007-09-28 22:42:16 -070028#include <linux/eeprom_93cx6.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090029#include <linux/slab.h>
Ben Dooks825a2ff2007-07-03 16:53:09 +010030
31#include <net/ax88796.h>
32
33#include <asm/system.h>
Ben Dooks825a2ff2007-07-03 16:53:09 +010034
Marc Kleine-Budde9f072422011-02-19 17:07:40 +010035static int phy_debug;
Ben Dooks825a2ff2007-07-03 16:53:09 +010036
37/* Rename the lib8390.c functions to show that they are in this driver */
Marc Kleine-Budde9f072422011-02-19 17:07:40 +010038#define __ei_open ax_ei_open
39#define __ei_close ax_ei_close
40#define __ei_poll ax_ei_poll
Magnus Dammd57bc362009-01-14 21:05:55 -080041#define __ei_start_xmit ax_ei_start_xmit
Ben Dooks825a2ff2007-07-03 16:53:09 +010042#define __ei_tx_timeout ax_ei_tx_timeout
Marc Kleine-Budde9f072422011-02-19 17:07:40 +010043#define __ei_get_stats ax_ei_get_stats
Magnus Dammd57bc362009-01-14 21:05:55 -080044#define __ei_set_multicast_list ax_ei_set_multicast_list
Marc Kleine-Budde9f072422011-02-19 17:07:40 +010045#define __ei_interrupt ax_ei_interrupt
Ben Dooks825a2ff2007-07-03 16:53:09 +010046#define ____alloc_ei_netdev ax__alloc_ei_netdev
Marc Kleine-Budde9f072422011-02-19 17:07:40 +010047#define __NS8390_init ax_NS8390_init
Ben Dooks825a2ff2007-07-03 16:53:09 +010048
49/* force unsigned long back to 'void __iomem *' */
50#define ax_convert_addr(_a) ((void __force __iomem *)(_a))
51
Marc Kleine-Budde9f072422011-02-19 17:07:40 +010052#define ei_inb(_a) readb(ax_convert_addr(_a))
Ben Dooks825a2ff2007-07-03 16:53:09 +010053#define ei_outb(_v, _a) writeb(_v, ax_convert_addr(_a))
54
Marc Kleine-Budde9f072422011-02-19 17:07:40 +010055#define ei_inb_p(_a) ei_inb(_a)
Ben Dooks825a2ff2007-07-03 16:53:09 +010056#define ei_outb_p(_v, _a) ei_outb(_v, _a)
57
58/* define EI_SHIFT() to take into account our register offsets */
Marc Kleine-Budde9f072422011-02-19 17:07:40 +010059#define EI_SHIFT(x) (ei_local->reg_offset[(x)])
Ben Dooks825a2ff2007-07-03 16:53:09 +010060
61/* Ensure we have our RCR base value */
62#define AX88796_PLATFORM
63
64static 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 */
Marc Kleine-Budde9f072422011-02-19 17:07:40 +010077#define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
Ben Dooks825a2ff2007-07-03 16:53:09 +010078#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
83struct ax_device {
Marc Kleine-Budde9f072422011-02-19 17:07:40 +010084 struct timer_list mii_timer;
85 spinlock_t mii_lock;
86 struct mii_if_info mii;
Ben Dooks825a2ff2007-07-03 16:53:09 +010087
Marc Kleine-Budde9f072422011-02-19 17:07:40 +010088 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;
Ben Dooks825a2ff2007-07-03 16:53:09 +010094
Marc Kleine-Budde9f072422011-02-19 17:07:40 +010095 unsigned char running;
96 unsigned char resume_open;
97 unsigned int irqflags;
Ben Dooks825a2ff2007-07-03 16:53:09 +010098
Marc Kleine-Budde9f072422011-02-19 17:07:40 +010099 u32 reg_offsets[0x20];
Ben Dooks825a2ff2007-07-03 16:53:09 +0100100};
101
102static inline struct ax_device *to_ax_dev(struct net_device *dev)
103{
104 struct ei_device *ei_local = netdev_priv(dev);
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100105 return (struct ax_device *)(ei_local + 1);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100106}
107
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100108/*
109 * ax_initial_check
Ben Dooks825a2ff2007-07-03 16:53:09 +0100110 *
111 * do an initial probe for the card to check wether it exists
112 * and is functional
113 */
Ben Dooks825a2ff2007-07-03 16:53:09 +0100114static 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
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100125 ei_outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP, ioaddr + E8390_CMD);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100126 regd = ei_inb(ioaddr + 0x0d);
127 ei_outb(0xff, ioaddr + 0x0d);
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100128 ei_outb(E8390_NODMA + E8390_PAGE0, ioaddr + E8390_CMD);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100129 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
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100139/*
140 * Hard reset the card. This used to pause for the same period that a
141 * 8390 reset command required, but that shouldn't be necessary.
142 */
Ben Dooks825a2ff2007-07-03 16:53:09 +0100143static void ax_reset_8390(struct net_device *dev)
144{
145 struct ei_device *ei_local = netdev_priv(dev);
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100146 struct ax_device *ax = to_ax_dev(dev);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100147 unsigned long reset_start_time = jiffies;
148 void __iomem *addr = (void __iomem *)dev->base_addr;
149
150 if (ei_debug > 1)
Ben Dooks237c5e82008-01-31 11:25:31 +0000151 dev_dbg(&ax->dev->dev, "resetting the 8390 t=%ld\n", jiffies);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100152
153 ei_outb(ei_inb(addr + NE_RESET), addr + NE_RESET);
154
Marc Kleine-Buddeea5a43d2011-02-19 22:08:33 +0100155 ei_local->txing = 0;
156 ei_local->dmaing = 0;
Ben Dooks825a2ff2007-07-03 16:53:09 +0100157
158 /* This check _should_not_ be necessary, omit eventually. */
159 while ((ei_inb(addr + EN0_ISR) & ENISR_RESET) == 0) {
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100160 if (jiffies - reset_start_time > 2 * HZ / 100) {
Ben Dooks237c5e82008-01-31 11:25:31 +0000161 dev_warn(&ax->dev->dev, "%s: %s did not complete.\n",
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700162 __func__, dev->name);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100163 break;
164 }
165 }
166
167 ei_outb(ENISR_RESET, addr + EN0_ISR); /* Ack intr. */
168}
169
170
171static void ax_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
172 int ring_page)
173{
174 struct ei_device *ei_local = netdev_priv(dev);
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100175 struct ax_device *ax = to_ax_dev(dev);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100176 void __iomem *nic_base = ei_local->mem;
177
178 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
Marc Kleine-Buddeea5a43d2011-02-19 22:08:33 +0100179 if (ei_local->dmaing) {
Ben Dooks237c5e82008-01-31 11:25:31 +0000180 dev_err(&ax->dev->dev, "%s: DMAing conflict in %s "
181 "[DMAstat:%d][irqlock:%d].\n",
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700182 dev->name, __func__,
Marc Kleine-Buddeea5a43d2011-02-19 22:08:33 +0100183 ei_local->dmaing, ei_local->irqlock);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100184 return;
185 }
186
Marc Kleine-Buddeea5a43d2011-02-19 22:08:33 +0100187 ei_local->dmaing |= 0x01;
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100188 ei_outb(E8390_NODMA + E8390_PAGE0 + E8390_START, nic_base + NE_CMD);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100189 ei_outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
190 ei_outb(0, nic_base + EN0_RCNTHI);
191 ei_outb(0, nic_base + EN0_RSARLO); /* On page boundary */
192 ei_outb(ring_page, nic_base + EN0_RSARHI);
193 ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
194
Marc Kleine-Buddeea5a43d2011-02-19 22:08:33 +0100195 if (ei_local->word16)
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100196 readsw(nic_base + NE_DATAPORT, hdr,
197 sizeof(struct e8390_pkt_hdr) >> 1);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100198 else
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100199 readsb(nic_base + NE_DATAPORT, hdr,
200 sizeof(struct e8390_pkt_hdr));
Ben Dooks825a2ff2007-07-03 16:53:09 +0100201
202 ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
Marc Kleine-Buddeea5a43d2011-02-19 22:08:33 +0100203 ei_local->dmaing &= ~0x01;
Ben Dooks825a2ff2007-07-03 16:53:09 +0100204
205 le16_to_cpus(&hdr->count);
206}
207
208
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100209/*
210 * Block input and output, similar to the Crynwr packet driver. If
211 * you are porting to a new ethercard, look at the packet driver
212 * source for hints. The NEx000 doesn't share the on-board packet
213 * memory -- you have to put the packet out through the "remote DMA"
214 * dataport using ei_outb.
215 */
Ben Dooks825a2ff2007-07-03 16:53:09 +0100216static void ax_block_input(struct net_device *dev, int count,
217 struct sk_buff *skb, int ring_offset)
218{
219 struct ei_device *ei_local = netdev_priv(dev);
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100220 struct ax_device *ax = to_ax_dev(dev);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100221 void __iomem *nic_base = ei_local->mem;
222 char *buf = skb->data;
223
Marc Kleine-Buddeea5a43d2011-02-19 22:08:33 +0100224 if (ei_local->dmaing) {
Ben Dooks237c5e82008-01-31 11:25:31 +0000225 dev_err(&ax->dev->dev,
226 "%s: DMAing conflict in %s "
Ben Dooks825a2ff2007-07-03 16:53:09 +0100227 "[DMAstat:%d][irqlock:%d].\n",
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700228 dev->name, __func__,
Marc Kleine-Buddeea5a43d2011-02-19 22:08:33 +0100229 ei_local->dmaing, ei_local->irqlock);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100230 return;
231 }
232
Marc Kleine-Buddeea5a43d2011-02-19 22:08:33 +0100233 ei_local->dmaing |= 0x01;
Ben Dooks825a2ff2007-07-03 16:53:09 +0100234
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100235 ei_outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base + NE_CMD);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100236 ei_outb(count & 0xff, nic_base + EN0_RCNTLO);
237 ei_outb(count >> 8, nic_base + EN0_RCNTHI);
238 ei_outb(ring_offset & 0xff, nic_base + EN0_RSARLO);
239 ei_outb(ring_offset >> 8, nic_base + EN0_RSARHI);
240 ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
241
Marc Kleine-Buddeea5a43d2011-02-19 22:08:33 +0100242 if (ei_local->word16) {
Ben Dooks825a2ff2007-07-03 16:53:09 +0100243 readsw(nic_base + NE_DATAPORT, buf, count >> 1);
244 if (count & 0x01)
245 buf[count-1] = ei_inb(nic_base + NE_DATAPORT);
246
247 } else {
248 readsb(nic_base + NE_DATAPORT, buf, count);
249 }
250
Marc Kleine-Buddeea5a43d2011-02-19 22:08:33 +0100251 ei_local->dmaing &= ~1;
Ben Dooks825a2ff2007-07-03 16:53:09 +0100252}
253
254static void ax_block_output(struct net_device *dev, int count,
255 const unsigned char *buf, const int start_page)
256{
257 struct ei_device *ei_local = netdev_priv(dev);
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100258 struct ax_device *ax = to_ax_dev(dev);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100259 void __iomem *nic_base = ei_local->mem;
260 unsigned long dma_start;
261
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100262 /*
263 * Round the count up for word writes. Do we need to do this?
264 * What effect will an odd byte count have on the 8390? I
265 * should check someday.
266 */
Marc Kleine-Buddeea5a43d2011-02-19 22:08:33 +0100267 if (ei_local->word16 && (count & 0x01))
Ben Dooks825a2ff2007-07-03 16:53:09 +0100268 count++;
269
270 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
Marc Kleine-Buddeea5a43d2011-02-19 22:08:33 +0100271 if (ei_local->dmaing) {
Ben Dooks237c5e82008-01-31 11:25:31 +0000272 dev_err(&ax->dev->dev, "%s: DMAing conflict in %s."
Ben Dooks825a2ff2007-07-03 16:53:09 +0100273 "[DMAstat:%d][irqlock:%d]\n",
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700274 dev->name, __func__,
Marc Kleine-Buddeea5a43d2011-02-19 22:08:33 +0100275 ei_local->dmaing, ei_local->irqlock);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100276 return;
277 }
278
Marc Kleine-Buddeea5a43d2011-02-19 22:08:33 +0100279 ei_local->dmaing |= 0x01;
Ben Dooks825a2ff2007-07-03 16:53:09 +0100280 /* We should already be in page 0, but to be safe... */
281 ei_outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
282
283 ei_outb(ENISR_RDC, nic_base + EN0_ISR);
284
285 /* Now the normal output. */
286 ei_outb(count & 0xff, nic_base + EN0_RCNTLO);
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100287 ei_outb(count >> 8, nic_base + EN0_RCNTHI);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100288 ei_outb(0x00, nic_base + EN0_RSARLO);
289 ei_outb(start_page, nic_base + EN0_RSARHI);
290
291 ei_outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
Marc Kleine-Buddeea5a43d2011-02-19 22:08:33 +0100292 if (ei_local->word16)
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100293 writesw(nic_base + NE_DATAPORT, buf, count >> 1);
294 else
Ben Dooks825a2ff2007-07-03 16:53:09 +0100295 writesb(nic_base + NE_DATAPORT, buf, count);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100296
297 dma_start = jiffies;
298
299 while ((ei_inb(nic_base + EN0_ISR) & ENISR_RDC) == 0) {
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100300 if (jiffies - dma_start > 2 * HZ / 100) { /* 20ms */
Ben Dooks237c5e82008-01-31 11:25:31 +0000301 dev_warn(&ax->dev->dev,
302 "%s: timeout waiting for Tx RDC.\n", dev->name);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100303 ax_reset_8390(dev);
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100304 ax_NS8390_init(dev, 1);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100305 break;
306 }
307 }
308
309 ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
Marc Kleine-Buddeea5a43d2011-02-19 22:08:33 +0100310 ei_local->dmaing &= ~0x01;
Ben Dooks825a2ff2007-07-03 16:53:09 +0100311}
312
313/* definitions for accessing MII/EEPROM interface */
314
315#define AX_MEMR EI_SHIFT(0x14)
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100316#define AX_MEMR_MDC BIT(0)
317#define AX_MEMR_MDIR BIT(1)
318#define AX_MEMR_MDI BIT(2)
319#define AX_MEMR_MDO BIT(3)
320#define AX_MEMR_EECS BIT(4)
321#define AX_MEMR_EEI BIT(5)
322#define AX_MEMR_EEO BIT(6)
323#define AX_MEMR_EECLK BIT(7)
Ben Dooks825a2ff2007-07-03 16:53:09 +0100324
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100325/*
326 * ax_mii_ei_outbits
Ben Dooks825a2ff2007-07-03 16:53:09 +0100327 *
328 * write the specified set of bits to the phy
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100329 */
Ben Dooks825a2ff2007-07-03 16:53:09 +0100330static void
331ax_mii_ei_outbits(struct net_device *dev, unsigned int bits, int len)
332{
Joe Perchesece49152010-11-15 11:12:31 +0000333 struct ei_device *ei_local = netdev_priv(dev);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100334 void __iomem *memr_addr = (void __iomem *)dev->base_addr + AX_MEMR;
335 unsigned int memr;
336
337 /* clock low, data to output mode */
338 memr = ei_inb(memr_addr);
339 memr &= ~(AX_MEMR_MDC | AX_MEMR_MDIR);
340 ei_outb(memr, memr_addr);
341
342 for (len--; len >= 0; len--) {
343 if (bits & (1 << len))
344 memr |= AX_MEMR_MDO;
345 else
346 memr &= ~AX_MEMR_MDO;
347
348 ei_outb(memr, memr_addr);
349
350 /* clock high */
351
352 ei_outb(memr | AX_MEMR_MDC, memr_addr);
353 udelay(1);
354
355 /* clock low */
356 ei_outb(memr, memr_addr);
357 }
358
359 /* leaves the clock line low, mdir input */
360 memr |= AX_MEMR_MDIR;
361 ei_outb(memr, (void __iomem *)dev->base_addr + AX_MEMR);
362}
363
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100364/*
365 * ax_phy_ei_inbits
Ben Dooks825a2ff2007-07-03 16:53:09 +0100366 *
367 * read a specified number of bits from the phy
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100368 */
Ben Dooks825a2ff2007-07-03 16:53:09 +0100369static unsigned int
370ax_phy_ei_inbits(struct net_device *dev, int no)
371{
Joe Perchesece49152010-11-15 11:12:31 +0000372 struct ei_device *ei_local = netdev_priv(dev);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100373 void __iomem *memr_addr = (void __iomem *)dev->base_addr + AX_MEMR;
374 unsigned int memr;
375 unsigned int result = 0;
376
377 /* clock low, data to input mode */
378 memr = ei_inb(memr_addr);
379 memr &= ~AX_MEMR_MDC;
380 memr |= AX_MEMR_MDIR;
381 ei_outb(memr, memr_addr);
382
383 for (no--; no >= 0; no--) {
384 ei_outb(memr | AX_MEMR_MDC, memr_addr);
385
386 udelay(1);
387
388 if (ei_inb(memr_addr) & AX_MEMR_MDI)
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100389 result |= (1 << no);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100390
391 ei_outb(memr, memr_addr);
392 }
393
394 return result;
395}
396
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100397/*
398 * ax_phy_issueaddr
Ben Dooks825a2ff2007-07-03 16:53:09 +0100399 *
400 * use the low level bit shifting routines to send the address
401 * and command to the specified phy
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100402 */
Ben Dooks825a2ff2007-07-03 16:53:09 +0100403static void
404ax_phy_issueaddr(struct net_device *dev, int phy_addr, int reg, int opc)
405{
406 if (phy_debug)
407 pr_debug("%s: dev %p, %04x, %04x, %d\n",
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700408 __func__, dev, phy_addr, reg, opc);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100409
410 ax_mii_ei_outbits(dev, 0x3f, 6); /* pre-amble */
411 ax_mii_ei_outbits(dev, 1, 2); /* frame-start */
412 ax_mii_ei_outbits(dev, opc, 2); /* op code */
413 ax_mii_ei_outbits(dev, phy_addr, 5); /* phy address */
414 ax_mii_ei_outbits(dev, reg, 5); /* reg address */
415}
416
417static int
418ax_phy_read(struct net_device *dev, int phy_addr, int reg)
419{
Joe Perchesece49152010-11-15 11:12:31 +0000420 struct ei_device *ei_local = netdev_priv(dev);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100421 unsigned long flags;
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100422 unsigned int result;
Ben Dooks825a2ff2007-07-03 16:53:09 +0100423
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100424 spin_lock_irqsave(&ei_local->page_lock, flags);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100425
426 ax_phy_issueaddr(dev, phy_addr, reg, 2);
427
428 result = ax_phy_ei_inbits(dev, 17);
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100429 result &= ~(3 << 16);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100430
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100431 spin_unlock_irqrestore(&ei_local->page_lock, flags);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100432
433 if (phy_debug)
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700434 pr_debug("%s: %04x.%04x => read %04x\n", __func__,
Ben Dooks825a2ff2007-07-03 16:53:09 +0100435 phy_addr, reg, result);
436
437 return result;
438}
439
440static void
441ax_phy_write(struct net_device *dev, int phy_addr, int reg, int value)
442{
Joe Perchesece49152010-11-15 11:12:31 +0000443 struct ei_device *ei = netdev_priv(dev);
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100444 struct ax_device *ax = to_ax_dev(dev);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100445 unsigned long flags;
446
Ben Dooks237c5e82008-01-31 11:25:31 +0000447 dev_dbg(&ax->dev->dev, "%s: %p, %04x, %04x %04x\n",
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700448 __func__, dev, phy_addr, reg, value);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100449
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100450 spin_lock_irqsave(&ei->page_lock, flags);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100451
452 ax_phy_issueaddr(dev, phy_addr, reg, 1);
453 ax_mii_ei_outbits(dev, 2, 2); /* send TA */
454 ax_mii_ei_outbits(dev, value, 16);
455
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100456 spin_unlock_irqrestore(&ei->page_lock, flags);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100457}
458
459static void ax_mii_expiry(unsigned long data)
460{
461 struct net_device *dev = (struct net_device *)data;
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100462 struct ax_device *ax = to_ax_dev(dev);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100463 unsigned long flags;
464
465 spin_lock_irqsave(&ax->mii_lock, flags);
466 mii_check_media(&ax->mii, netif_msg_link(ax), 0);
467 spin_unlock_irqrestore(&ax->mii_lock, flags);
468
469 if (ax->running) {
470 ax->mii_timer.expires = jiffies + HZ*2;
471 add_timer(&ax->mii_timer);
472 }
473}
474
475static int ax_open(struct net_device *dev)
476{
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100477 struct ax_device *ax = to_ax_dev(dev);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100478 struct ei_device *ei_local = netdev_priv(dev);
479 int ret;
480
Al Viro2832e852007-07-15 21:00:51 +0100481 dev_dbg(&ax->dev->dev, "%s: open\n", dev->name);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100482
Daniel Mack47cb0352009-03-24 23:31:22 -0700483 ret = request_irq(dev->irq, ax_ei_interrupt, ax->irqflags,
484 dev->name, dev);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100485 if (ret)
486 return ret;
487
488 ret = ax_ei_open(dev);
Kulikov Vasiliy9f1e7582010-07-08 23:42:40 -0700489 if (ret) {
490 free_irq(dev->irq, dev);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100491 return ret;
Kulikov Vasiliy9f1e7582010-07-08 23:42:40 -0700492 }
Ben Dooks825a2ff2007-07-03 16:53:09 +0100493
494 /* turn the phy on (if turned off) */
495
496 ei_outb(ax->plat->gpoc_val, ei_local->mem + EI_SHIFT(0x17));
497 ax->running = 1;
498
499 /* start the MII timer */
500
501 init_timer(&ax->mii_timer);
502
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100503 ax->mii_timer.expires = jiffies + 1;
504 ax->mii_timer.data = (unsigned long) dev;
Ben Dooks825a2ff2007-07-03 16:53:09 +0100505 ax->mii_timer.function = ax_mii_expiry;
506
507 add_timer(&ax->mii_timer);
508
509 return 0;
510}
511
512static int ax_close(struct net_device *dev)
513{
514 struct ax_device *ax = to_ax_dev(dev);
515 struct ei_device *ei_local = netdev_priv(dev);
516
Al Viro2832e852007-07-15 21:00:51 +0100517 dev_dbg(&ax->dev->dev, "%s: close\n", dev->name);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100518
519 /* turn the phy off */
520
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100521 ei_outb(ax->plat->gpoc_val | (1 << 6),
Ben Dooks825a2ff2007-07-03 16:53:09 +0100522 ei_local->mem + EI_SHIFT(0x17));
523
524 ax->running = 0;
525 wmb();
526
527 del_timer_sync(&ax->mii_timer);
528 ax_ei_close(dev);
529
530 free_irq(dev->irq, dev);
531 return 0;
532}
533
534static int ax_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
535{
536 struct ax_device *ax = to_ax_dev(dev);
537 unsigned long flags;
538 int rc;
539
540 if (!netif_running(dev))
541 return -EINVAL;
542
543 spin_lock_irqsave(&ax->mii_lock, flags);
544 rc = generic_mii_ioctl(&ax->mii, if_mii(req), cmd, NULL);
545 spin_unlock_irqrestore(&ax->mii_lock, flags);
546
547 return rc;
548}
549
550/* ethtool ops */
551
552static void ax_get_drvinfo(struct net_device *dev,
553 struct ethtool_drvinfo *info)
554{
555 struct ax_device *ax = to_ax_dev(dev);
556
557 strcpy(info->driver, DRV_NAME);
558 strcpy(info->version, DRV_VERSION);
559 strcpy(info->bus_info, ax->dev->name);
560}
561
562static int ax_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
563{
564 struct ax_device *ax = to_ax_dev(dev);
565 unsigned long flags;
566
567 spin_lock_irqsave(&ax->mii_lock, flags);
568 mii_ethtool_gset(&ax->mii, cmd);
Ben Dooksc0912582008-08-07 17:21:09 +0100569 spin_unlock_irqrestore(&ax->mii_lock, flags);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100570
571 return 0;
572}
573
574static int ax_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
575{
576 struct ax_device *ax = to_ax_dev(dev);
577 unsigned long flags;
578 int rc;
579
580 spin_lock_irqsave(&ax->mii_lock, flags);
581 rc = mii_ethtool_sset(&ax->mii, cmd);
Ben Dooksc0912582008-08-07 17:21:09 +0100582 spin_unlock_irqrestore(&ax->mii_lock, flags);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100583
584 return rc;
585}
586
587static int ax_nway_reset(struct net_device *dev)
588{
589 struct ax_device *ax = to_ax_dev(dev);
590 return mii_nway_restart(&ax->mii);
591}
592
593static u32 ax_get_link(struct net_device *dev)
594{
595 struct ax_device *ax = to_ax_dev(dev);
596 return mii_link_ok(&ax->mii);
597}
598
599static const struct ethtool_ops ax_ethtool_ops = {
600 .get_drvinfo = ax_get_drvinfo,
601 .get_settings = ax_get_settings,
602 .set_settings = ax_set_settings,
603 .nway_reset = ax_nway_reset,
604 .get_link = ax_get_link,
Ben Dooks825a2ff2007-07-03 16:53:09 +0100605};
606
Magnus Damm89e536a2007-09-28 22:42:16 -0700607#ifdef CONFIG_AX88796_93CX6
608static void ax_eeprom_register_read(struct eeprom_93cx6 *eeprom)
609{
610 struct ei_device *ei_local = eeprom->data;
611 u8 reg = ei_inb(ei_local->mem + AX_MEMR);
612
613 eeprom->reg_data_in = reg & AX_MEMR_EEI;
614 eeprom->reg_data_out = reg & AX_MEMR_EEO; /* Input pin */
615 eeprom->reg_data_clock = reg & AX_MEMR_EECLK;
616 eeprom->reg_chip_select = reg & AX_MEMR_EECS;
617}
618
619static void ax_eeprom_register_write(struct eeprom_93cx6 *eeprom)
620{
621 struct ei_device *ei_local = eeprom->data;
622 u8 reg = ei_inb(ei_local->mem + AX_MEMR);
623
624 reg &= ~(AX_MEMR_EEI | AX_MEMR_EECLK | AX_MEMR_EECS);
625
626 if (eeprom->reg_data_in)
627 reg |= AX_MEMR_EEI;
628 if (eeprom->reg_data_clock)
629 reg |= AX_MEMR_EECLK;
630 if (eeprom->reg_chip_select)
631 reg |= AX_MEMR_EECS;
632
633 ei_outb(reg, ei_local->mem + AX_MEMR);
634 udelay(10);
635}
636#endif
637
Magnus Dammd57bc362009-01-14 21:05:55 -0800638static const struct net_device_ops ax_netdev_ops = {
639 .ndo_open = ax_open,
640 .ndo_stop = ax_close,
641 .ndo_do_ioctl = ax_ioctl,
642
643 .ndo_start_xmit = ax_ei_start_xmit,
644 .ndo_tx_timeout = ax_ei_tx_timeout,
645 .ndo_get_stats = ax_ei_get_stats,
646 .ndo_set_multicast_list = ax_ei_set_multicast_list,
647 .ndo_validate_addr = eth_validate_addr,
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100648 .ndo_set_mac_address = eth_mac_addr,
Magnus Dammd57bc362009-01-14 21:05:55 -0800649 .ndo_change_mtu = eth_change_mtu,
650#ifdef CONFIG_NET_POLL_CONTROLLER
651 .ndo_poll_controller = ax_ei_poll,
652#endif
653};
654
Ben Dooks825a2ff2007-07-03 16:53:09 +0100655/* setup code */
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
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100662 /* Select page 0 */
663 ei_outb(E8390_NODMA + E8390_PAGE0 + E8390_STOP, ioaddr + E8390_CMD);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100664
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
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100670/*
671 * ax_init_dev
Ben Dooks825a2ff2007-07-03 16:53:09 +0100672 *
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 */
Marc Kleine-Budde1cbece32011-02-19 23:07:09 +0100678static int ax_init_dev(struct net_device *dev)
Ben Dooks825a2ff2007-07-03 16:53:09 +0100679{
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
Marc Kleine-Budde1cbece32011-02-19 23:07:09 +0100698 if (ax->plat->flags & AXFLG_HAS_EEPROM) {
Ben Dooks825a2ff2007-07-03 16:53:09 +0100699 unsigned char SA_prom[32];
700
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100701 for (i = 0; i < sizeof(SA_prom); i += 2) {
Ben Dooks825a2ff2007-07-03 16:53:09 +0100702 SA_prom[i] = ei_inb(ioaddr + NE_DATAPORT);
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100703 SA_prom[i + 1] = ei_inb(ioaddr + NE_DATAPORT);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100704 }
705
706 if (ax->plat->wordlength == 2)
707 for (i = 0; i < 16; i++)
708 SA_prom[i] = SA_prom[i+i];
709
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100710 memcpy(dev->dev_addr, SA_prom, 6);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100711 }
712
Magnus Damm89e536a2007-09-28 22:42:16 -0700713#ifdef CONFIG_AX88796_93CX6
Marc Kleine-Budde1cbece32011-02-19 23:07:09 +0100714 if (ax->plat->flags & AXFLG_HAS_93CX6) {
Magnus Damm89e536a2007-09-28 22:42:16 -0700715 unsigned char mac_addr[6];
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
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100727 memcpy(dev->dev_addr, mac_addr, 6);
Magnus Damm89e536a2007-09-28 22:42:16 -0700728 }
729#endif
Ben Dooks825a2ff2007-07-03 16:53:09 +0100730 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
Marc Kleine-Budde1cbece32011-02-19 23:07:09 +0100740 /* 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 < ETHER_ADDR_LEN; i++)
745 dev->dev_addr[i] =
746 ei_inb(ioaddr + EN1_PHYS_SHIFT(i));
Ben Dooks825a2ff2007-07-03 16:53:09 +0100747 }
748
Marc Kleine-Budde1cbece32011-02-19 23:07:09 +0100749 if ((ax->plat->flags & AXFLG_MAC_FROMPLATFORM) &&
750 ax->plat->mac_addr)
751 memcpy(dev->dev_addr, ax->plat->mac_addr,
752 ETHER_ADDR_LEN);
753
Ben Dooks825a2ff2007-07-03 16:53:09 +0100754 ax_reset_8390(dev);
755
Marc Kleine-Buddeea5a43d2011-02-19 22:08:33 +0100756 ei_local->name = "AX88796";
757 ei_local->tx_start_page = start_page;
758 ei_local->stop_page = stop_page;
759 ei_local->word16 = (ax->plat->wordlength == 2);
760 ei_local->rx_start_page = start_page + TX_PAGES;
Ben Dooks825a2ff2007-07-03 16:53:09 +0100761
762#ifdef PACKETBUF_MEMSIZE
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100763 /* Allow the packet buffer size to be overridden by know-it-alls. */
Marc Kleine-Buddeea5a43d2011-02-19 22:08:33 +0100764 ei_local->stop_page = ei_local->tx_start_page + PACKETBUF_MEMSIZE;
Ben Dooks825a2ff2007-07-03 16:53:09 +0100765#endif
766
Marc Kleine-Buddeea5a43d2011-02-19 22:08:33 +0100767 ei_local->reset_8390 = &ax_reset_8390;
768 ei_local->block_input = &ax_block_input;
769 ei_local->block_output = &ax_block_output;
770 ei_local->get_8390_hdr = &ax_get_8390_hdr;
771 ei_local->priv = 0;
Ben Dooks825a2ff2007-07-03 16:53:09 +0100772
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100773 dev->netdev_ops = &ax_netdev_ops;
774 dev->ethtool_ops = &ax_ethtool_ops;
Ben Dooks825a2ff2007-07-03 16:53:09 +0100775
776 ax->msg_enable = NETIF_MSG_LINK;
777 ax->mii.phy_id_mask = 0x1f;
778 ax->mii.reg_num_mask = 0x1f;
779 ax->mii.phy_id = 0x10; /* onboard phy */
780 ax->mii.force_media = 0;
781 ax->mii.full_duplex = 0;
782 ax->mii.mdio_read = ax_phy_read;
783 ax->mii.mdio_write = ax_phy_write;
784 ax->mii.dev = dev;
785
Ben Dooks825a2ff2007-07-03 16:53:09 +0100786 ax_NS8390_init(dev, 0);
787
Marc Kleine-Budde1cbece32011-02-19 23:07:09 +0100788 dev_info(&ax->dev->dev, "%dbit, irq %d, %lx, MAC: %pM\n",
789 ei_local->word16 ? 16 : 8, dev->irq, dev->base_addr,
790 dev->dev_addr);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100791
792 ret = register_netdev(dev);
793 if (ret)
794 goto out_irq;
795
796 return 0;
797
798 out_irq:
799 /* cleanup irq */
800 free_irq(dev->irq, dev);
801 err_out:
802 return ret;
803}
804
805static int ax_remove(struct platform_device *_dev)
806{
807 struct net_device *dev = platform_get_drvdata(_dev);
Marc Kleine-Buddeea5a43d2011-02-19 22:08:33 +0100808 struct ei_device *ei_local = netdev_priv(dev);
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100809 struct ax_device *ax;
Ben Dooks825a2ff2007-07-03 16:53:09 +0100810
811 ax = to_ax_dev(dev);
812
813 unregister_netdev(dev);
814 free_irq(dev->irq, dev);
815
Marc Kleine-Buddeea5a43d2011-02-19 22:08:33 +0100816 iounmap(ei_local->mem);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100817 release_resource(ax->mem);
818 kfree(ax->mem);
819
820 if (ax->map2) {
821 iounmap(ax->map2);
822 release_resource(ax->mem2);
823 kfree(ax->mem2);
824 }
825
826 free_netdev(dev);
827
828 return 0;
829}
830
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100831/*
832 * ax_probe
Ben Dooks825a2ff2007-07-03 16:53:09 +0100833 *
834 * This is the entry point when the platform device system uses to
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100835 * notify us of a new device to attach to. Allocate memory, find the
836 * resources and information passed, and map the necessary registers.
837 */
Ben Dooks825a2ff2007-07-03 16:53:09 +0100838static int ax_probe(struct platform_device *pdev)
839{
840 struct net_device *dev;
Marc Kleine-Buddeea5a43d2011-02-19 22:08:33 +0100841 struct ei_device *ei_local;
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100842 struct ax_device *ax;
843 struct resource *res;
Ben Dooks825a2ff2007-07-03 16:53:09 +0100844 size_t size;
Daniel Mack47cb0352009-03-24 23:31:22 -0700845 int ret = 0;
Ben Dooks825a2ff2007-07-03 16:53:09 +0100846
847 dev = ax__alloc_ei_netdev(sizeof(struct ax_device));
848 if (dev == NULL)
849 return -ENOMEM;
850
851 /* ok, let's setup our device */
Marc Kleine-Buddeea5a43d2011-02-19 22:08:33 +0100852 ei_local = netdev_priv(dev);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100853 ax = to_ax_dev(dev);
854
Ben Dooks825a2ff2007-07-03 16:53:09 +0100855 spin_lock_init(&ax->mii_lock);
856
857 ax->dev = pdev;
858 ax->plat = pdev->dev.platform_data;
859 platform_set_drvdata(pdev, dev);
860
Marc Kleine-Buddeea5a43d2011-02-19 22:08:33 +0100861 ei_local->rxcr_base = ax->plat->rcr_val;
Ben Dooks825a2ff2007-07-03 16:53:09 +0100862
863 /* find the platform resources */
Daniel Mack47cb0352009-03-24 23:31:22 -0700864 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
865 if (res == NULL) {
Ben Dooks825a2ff2007-07-03 16:53:09 +0100866 dev_err(&pdev->dev, "no IRQ specified\n");
Julia Lawall13eea192010-10-18 04:11:14 +0000867 ret = -ENXIO;
Ben Dooks825a2ff2007-07-03 16:53:09 +0100868 goto exit_mem;
869 }
Daniel Mack47cb0352009-03-24 23:31:22 -0700870
871 dev->irq = res->start;
872 ax->irqflags = res->flags & IRQF_TRIGGER_MASK;
Ben Dooks825a2ff2007-07-03 16:53:09 +0100873
874 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
875 if (res == NULL) {
876 dev_err(&pdev->dev, "no MEM specified\n");
877 ret = -ENXIO;
878 goto exit_mem;
879 }
880
881 size = (res->end - res->start) + 1;
882
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100883 /*
884 * setup the register offsets from either the platform data or
885 * by using the size of the resource provided
886 */
Ben Dooks825a2ff2007-07-03 16:53:09 +0100887 if (ax->plat->reg_offsets)
Marc Kleine-Buddeea5a43d2011-02-19 22:08:33 +0100888 ei_local->reg_offset = ax->plat->reg_offsets;
Ben Dooks825a2ff2007-07-03 16:53:09 +0100889 else {
Marc Kleine-Buddeea5a43d2011-02-19 22:08:33 +0100890 ei_local->reg_offset = ax->reg_offsets;
Ben Dooks825a2ff2007-07-03 16:53:09 +0100891 for (ret = 0; ret < 0x18; ret++)
892 ax->reg_offsets[ret] = (size / 0x18) * ret;
893 }
894
895 ax->mem = request_mem_region(res->start, size, pdev->name);
896 if (ax->mem == NULL) {
897 dev_err(&pdev->dev, "cannot reserve registers\n");
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100898 ret = -ENXIO;
Ben Dooks825a2ff2007-07-03 16:53:09 +0100899 goto exit_mem;
900 }
901
Marc Kleine-Buddeea5a43d2011-02-19 22:08:33 +0100902 ei_local->mem = ioremap(res->start, size);
903 dev->base_addr = (unsigned long)ei_local->mem;
Ben Dooks825a2ff2007-07-03 16:53:09 +0100904
Marc Kleine-Buddeea5a43d2011-02-19 22:08:33 +0100905 if (ei_local->mem == NULL) {
Andrew Mortonb4efe222007-08-10 14:05:21 -0700906 dev_err(&pdev->dev, "Cannot ioremap area (%08llx,%08llx)\n",
907 (unsigned long long)res->start,
908 (unsigned long long)res->end);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100909
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100910 ret = -ENXIO;
Ben Dooks825a2ff2007-07-03 16:53:09 +0100911 goto exit_req;
912 }
913
914 /* look for reset area */
915
916 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
917 if (res == NULL) {
918 if (!ax->plat->reg_offsets) {
919 for (ret = 0; ret < 0x20; ret++)
920 ax->reg_offsets[ret] = (size / 0x20) * ret;
921 }
922
923 ax->map2 = NULL;
924 } else {
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100925 size = (res->end - res->start) + 1;
Ben Dooks825a2ff2007-07-03 16:53:09 +0100926
927 ax->mem2 = request_mem_region(res->start, size, pdev->name);
Julia Lawallbcf4d812010-02-08 22:44:18 -0800928 if (ax->mem2 == NULL) {
Ben Dooks825a2ff2007-07-03 16:53:09 +0100929 dev_err(&pdev->dev, "cannot reserve registers\n");
930 ret = -ENXIO;
931 goto exit_mem1;
932 }
933
934 ax->map2 = ioremap(res->start, size);
935 if (ax->map2 == NULL) {
Joe Perches898eb712007-10-18 03:06:30 -0700936 dev_err(&pdev->dev, "cannot map reset register\n");
Ben Dooks825a2ff2007-07-03 16:53:09 +0100937 ret = -ENXIO;
938 goto exit_mem2;
939 }
940
Marc Kleine-Buddeea5a43d2011-02-19 22:08:33 +0100941 ei_local->reg_offset[0x1f] = ax->map2 - ei_local->mem;
Ben Dooks825a2ff2007-07-03 16:53:09 +0100942 }
943
944 /* got resources, now initialise and register device */
945
Marc Kleine-Budde1cbece32011-02-19 23:07:09 +0100946 ret = ax_init_dev(dev);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100947 if (!ret)
948 return 0;
949
950 if (ax->map2 == NULL)
951 goto exit_mem1;
952
953 iounmap(ax->map2);
954
955 exit_mem2:
956 release_resource(ax->mem2);
957 kfree(ax->mem2);
958
959 exit_mem1:
Marc Kleine-Buddeea5a43d2011-02-19 22:08:33 +0100960 iounmap(ei_local->mem);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100961
962 exit_req:
963 release_resource(ax->mem);
964 kfree(ax->mem);
965
966 exit_mem:
967 free_netdev(dev);
968
969 return ret;
970}
971
972/* suspend and resume */
973
974#ifdef CONFIG_PM
975static int ax_suspend(struct platform_device *dev, pm_message_t state)
976{
977 struct net_device *ndev = platform_get_drvdata(dev);
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100978 struct ax_device *ax = to_ax_dev(ndev);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100979
980 ax->resume_open = ax->running;
981
982 netif_device_detach(ndev);
983 ax_close(ndev);
984
985 return 0;
986}
987
988static int ax_resume(struct platform_device *pdev)
989{
990 struct net_device *ndev = platform_get_drvdata(pdev);
Marc Kleine-Budde9f072422011-02-19 17:07:40 +0100991 struct ax_device *ax = to_ax_dev(ndev);
Ben Dooks825a2ff2007-07-03 16:53:09 +0100992
993 ax_initial_setup(ndev, netdev_priv(ndev));
994 ax_NS8390_init(ndev, ax->resume_open);
995 netif_device_attach(ndev);
996
997 if (ax->resume_open)
998 ax_open(ndev);
999
1000 return 0;
1001}
1002
1003#else
1004#define ax_suspend NULL
Marc Kleine-Budde9f072422011-02-19 17:07:40 +01001005#define ax_resume NULL
Ben Dooks825a2ff2007-07-03 16:53:09 +01001006#endif
1007
1008static struct platform_driver axdrv = {
1009 .driver = {
1010 .name = "ax88796",
1011 .owner = THIS_MODULE,
1012 },
1013 .probe = ax_probe,
1014 .remove = ax_remove,
1015 .suspend = ax_suspend,
1016 .resume = ax_resume,
1017};
1018
1019static int __init axdrv_init(void)
1020{
1021 return platform_driver_register(&axdrv);
1022}
1023
1024static void __exit axdrv_exit(void)
1025{
1026 platform_driver_unregister(&axdrv);
1027}
1028
1029module_init(axdrv_init);
1030module_exit(axdrv_exit);
1031
1032MODULE_DESCRIPTION("AX88796 10/100 Ethernet platform driver");
1033MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>");
1034MODULE_LICENSE("GPL v2");
Kay Sievers72abb462008-04-18 13:50:44 -07001035MODULE_ALIAS("platform:ax88796");