blob: 4da191b87b0d9ee857dea8ef4fff0adc347a482b [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 *
3 * Alchemy Au1x00 ethernet driver
4 *
Sergei Shtylyov89be0502006-04-19 22:46:21 +04005 * Copyright 2001-2003, 2006 MontaVista Software Inc.
Linus Torvalds1da177e2005-04-16 15:20:36 -07006 * Copyright 2002 TimeSys Corp.
7 * Added ethtool/mii-tool support,
8 * Copyright 2004 Matt Porter <mporter@kernel.crashing.org>
Jeff Garzik6aa20a22006-09-13 13:24:59 -04009 * Update: 2004 Bjoern Riemer, riemer@fokus.fraunhofer.de
10 * or riemer@riemer-nt.de: fixed the link beat detection with
Linus Torvalds1da177e2005-04-16 15:20:36 -070011 * ioctls (SIOCGMIIPHY)
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +020012 * Copyright 2006 Herbert Valerio Riedel <hvr@gnu.org>
13 * converted to use linux-2.6.x's PHY framework
14 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070015 * Author: MontaVista Software, Inc.
16 * ppopov@mvista.com or source@mvista.com
17 *
18 * ########################################################################
19 *
20 * This program is free software; you can distribute it and/or modify it
21 * under the terms of the GNU General Public License (Version 2) as
22 * published by the Free Software Foundation.
23 *
24 * This program is distributed in the hope it will be useful, but WITHOUT
25 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
26 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
27 * for more details.
28 *
29 * You should have received a copy of the GNU General Public License along
30 * with this program; if not, write to the Free Software Foundation, Inc.,
31 * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
32 *
33 * ########################################################################
34 *
Jeff Garzik6aa20a22006-09-13 13:24:59 -040035 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070036 */
Manuel Laussbc36b422009-10-17 02:00:07 +000037#include <linux/capability.h>
Ralf Baechled791c2b2007-06-24 15:59:54 +020038#include <linux/dma-mapping.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070039#include <linux/module.h>
40#include <linux/kernel.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070041#include <linux/string.h>
42#include <linux/timer.h>
43#include <linux/errno.h>
44#include <linux/in.h>
45#include <linux/ioport.h>
46#include <linux/bitops.h>
47#include <linux/slab.h>
48#include <linux/interrupt.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070049#include <linux/init.h>
50#include <linux/netdevice.h>
51#include <linux/etherdevice.h>
52#include <linux/ethtool.h>
53#include <linux/mii.h>
54#include <linux/skbuff.h>
55#include <linux/delay.h>
Herbert Valerio Riedel8cd35da2006-05-01 15:37:09 +020056#include <linux/crc32.h>
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +020057#include <linux/phy.h>
Florian Fainellibd2302c2009-11-10 01:13:38 +010058#include <linux/platform_device.h>
Yoichi Yuasa25b31cb2007-10-15 19:11:24 +090059
60#include <asm/cpu.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070061#include <asm/mipsregs.h>
62#include <asm/irq.h>
63#include <asm/io.h>
64#include <asm/processor.h>
65
Yoichi Yuasa25b31cb2007-10-15 19:11:24 +090066#include <au1000.h>
Florian Fainellibd2302c2009-11-10 01:13:38 +010067#include <au1xxx_eth.h>
Yoichi Yuasa25b31cb2007-10-15 19:11:24 +090068#include <prom.h>
69
Linus Torvalds1da177e2005-04-16 15:20:36 -070070#include "au1000_eth.h"
71
72#ifdef AU1000_ETH_DEBUG
73static int au1000_debug = 5;
74#else
75static int au1000_debug = 3;
76#endif
77
Sergei Shtylyov89be0502006-04-19 22:46:21 +040078#define DRV_NAME "au1000_eth"
Andy Gospodarekd5b20692006-09-11 17:39:18 -040079#define DRV_VERSION "1.6"
Linus Torvalds1da177e2005-04-16 15:20:36 -070080#define DRV_AUTHOR "Pete Popov <ppopov@embeddedalley.com>"
81#define DRV_DESC "Au1xxx on-chip Ethernet driver"
82
83MODULE_AUTHOR(DRV_AUTHOR);
84MODULE_DESCRIPTION(DRV_DESC);
85MODULE_LICENSE("GPL");
86
Linus Torvalds1da177e2005-04-16 15:20:36 -070087/*
88 * Theory of operation
89 *
Jeff Garzik6aa20a22006-09-13 13:24:59 -040090 * The Au1000 MACs use a simple rx and tx descriptor ring scheme.
91 * There are four receive and four transmit descriptors. These
92 * descriptors are not in memory; rather, they are just a set of
Linus Torvalds1da177e2005-04-16 15:20:36 -070093 * hardware registers.
94 *
95 * Since the Au1000 has a coherent data cache, the receive and
Jeff Garzik6aa20a22006-09-13 13:24:59 -040096 * transmit buffers are allocated from the KSEG0 segment. The
Linus Torvalds1da177e2005-04-16 15:20:36 -070097 * hardware registers, however, are still mapped at KSEG1 to
98 * make sure there's no out-of-order writes, and that all writes
99 * complete immediately.
100 */
101
102/* These addresses are only used if yamon doesn't tell us what
103 * the mac address is, and the mac address is not passed on the
104 * command line.
105 */
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400106static unsigned char au1000_mac_addr[6] __devinitdata = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107 0x00, 0x50, 0xc2, 0x0c, 0x30, 0x00
108};
109
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110struct au1000_private *au_macs[NUM_ETH_INTERFACES];
111
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200112/*
113 * board-specific configurations
114 *
115 * PHY detection algorithm
116 *
Florian Fainellibd2302c2009-11-10 01:13:38 +0100117 * If phy_static_config is undefined, the PHY setup is
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200118 * autodetected:
119 *
120 * mii_probe() first searches the current MAC's MII bus for a PHY,
Florian Fainellibd2302c2009-11-10 01:13:38 +0100121 * selecting the first (or last, if phy_search_highest_addr is
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200122 * defined) PHY address not already claimed by another netdev.
123 *
124 * If nothing was found that way when searching for the 2nd ethernet
Florian Fainellibd2302c2009-11-10 01:13:38 +0100125 * controller's PHY and phy1_search_mac0 is defined, then
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200126 * the first MII bus is searched as well for an unclaimed PHY; this is
127 * needed in case of a dual-PHY accessible only through the MAC0's MII
128 * bus.
129 *
130 * Finally, if no PHY is found, then the corresponding ethernet
131 * controller is not registered to the network subsystem.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132 */
133
Florian Fainellibd2302c2009-11-10 01:13:38 +0100134/* autodetection defaults: phy1_search_mac0 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200136/* static PHY setup
137 *
138 * most boards PHY setup should be detectable properly with the
139 * autodetection algorithm in mii_probe(), but in some cases (e.g. if
140 * you have a switch attached, or want to use the PHY's interrupt
141 * notification capabilities) you can provide a static PHY
142 * configuration here
143 *
144 * IRQs may only be set, if a PHY address was configured
145 * If a PHY address is given, also a bus id is required to be set
146 *
147 * ps: make sure the used irqs are configured properly in the board
148 * specific irq-map
149 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150
Florian Fainelli5ef30412009-01-22 14:06:25 -0800151static void enable_mac(struct net_device *dev, int force_reset)
152{
153 unsigned long flags;
154 struct au1000_private *aup = netdev_priv(dev);
155
156 spin_lock_irqsave(&aup->lock, flags);
157
158 if(force_reset || (!aup->mac_enabled)) {
159 *aup->enable = MAC_EN_CLOCK_ENABLE;
160 au_sync_delay(2);
161 *aup->enable = (MAC_EN_RESET0 | MAC_EN_RESET1 | MAC_EN_RESET2
162 | MAC_EN_CLOCK_ENABLE);
163 au_sync_delay(2);
164
165 aup->mac_enabled = 1;
166 }
167
168 spin_unlock_irqrestore(&aup->lock, flags);
169}
170
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200171/*
172 * MII operations
173 */
Adrian Bunk1210dde2008-10-12 21:02:19 -0700174static int au1000_mdio_read(struct net_device *dev, int phy_addr, int reg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175{
Wang Chen454d7c92008-11-12 23:37:49 -0800176 struct au1000_private *aup = netdev_priv(dev);
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200177 volatile u32 *const mii_control_reg = &aup->mac->mii_control;
178 volatile u32 *const mii_data_reg = &aup->mac->mii_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179 u32 timedout = 20;
180 u32 mii_control;
181
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182 while (*mii_control_reg & MAC_MII_BUSY) {
183 mdelay(1);
184 if (--timedout == 0) {
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400185 printk(KERN_ERR "%s: read_MII busy timeout!!\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186 dev->name);
187 return -1;
188 }
189 }
190
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400191 mii_control = MAC_SET_MII_SELECT_REG(reg) |
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200192 MAC_SET_MII_SELECT_PHY(phy_addr) | MAC_MII_READ;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193
194 *mii_control_reg = mii_control;
195
196 timedout = 20;
197 while (*mii_control_reg & MAC_MII_BUSY) {
198 mdelay(1);
199 if (--timedout == 0) {
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400200 printk(KERN_ERR "%s: mdio_read busy timeout!!\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201 dev->name);
202 return -1;
203 }
204 }
205 return (int)*mii_data_reg;
206}
207
Adrian Bunk1210dde2008-10-12 21:02:19 -0700208static void au1000_mdio_write(struct net_device *dev, int phy_addr,
209 int reg, u16 value)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210{
Wang Chen454d7c92008-11-12 23:37:49 -0800211 struct au1000_private *aup = netdev_priv(dev);
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200212 volatile u32 *const mii_control_reg = &aup->mac->mii_control;
213 volatile u32 *const mii_data_reg = &aup->mac->mii_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214 u32 timedout = 20;
215 u32 mii_control;
216
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217 while (*mii_control_reg & MAC_MII_BUSY) {
218 mdelay(1);
219 if (--timedout == 0) {
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400220 printk(KERN_ERR "%s: mdio_write busy timeout!!\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700221 dev->name);
222 return;
223 }
224 }
225
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400226 mii_control = MAC_SET_MII_SELECT_REG(reg) |
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200227 MAC_SET_MII_SELECT_PHY(phy_addr) | MAC_MII_WRITE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228
229 *mii_data_reg = value;
230 *mii_control_reg = mii_control;
231}
232
Adrian Bunk1210dde2008-10-12 21:02:19 -0700233static int au1000_mdiobus_read(struct mii_bus *bus, int phy_addr, int regnum)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700234{
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200235 /* WARNING: bus->phy_map[phy_addr].attached_dev == dev does
236 * _NOT_ hold (e.g. when PHY is accessed through other MAC's MII bus) */
237 struct net_device *const dev = bus->priv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200239 enable_mac(dev, 0); /* make sure the MAC associated with this
240 * mii_bus is enabled */
Adrian Bunk1210dde2008-10-12 21:02:19 -0700241 return au1000_mdio_read(dev, phy_addr, regnum);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700242}
243
Adrian Bunk1210dde2008-10-12 21:02:19 -0700244static int au1000_mdiobus_write(struct mii_bus *bus, int phy_addr, int regnum,
245 u16 value)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246{
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200247 struct net_device *const dev = bus->priv;
248
249 enable_mac(dev, 0); /* make sure the MAC associated with this
250 * mii_bus is enabled */
Adrian Bunk1210dde2008-10-12 21:02:19 -0700251 au1000_mdio_write(dev, phy_addr, regnum, value);
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200252 return 0;
253}
254
Adrian Bunk1210dde2008-10-12 21:02:19 -0700255static int au1000_mdiobus_reset(struct mii_bus *bus)
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200256{
257 struct net_device *const dev = bus->priv;
258
259 enable_mac(dev, 0); /* make sure the MAC associated with this
260 * mii_bus is enabled */
261 return 0;
262}
263
Florian Fainelli5ef30412009-01-22 14:06:25 -0800264static void hard_stop(struct net_device *dev)
265{
266 struct au1000_private *aup = netdev_priv(dev);
267
268 if (au1000_debug > 4)
269 printk(KERN_INFO "%s: hard stop\n", dev->name);
270
271 aup->mac->control &= ~(MAC_RX_ENABLE | MAC_TX_ENABLE);
272 au_sync_delay(10);
273}
274
275static void enable_rx_tx(struct net_device *dev)
276{
277 struct au1000_private *aup = netdev_priv(dev);
278
279 if (au1000_debug > 4)
280 printk(KERN_INFO "%s: enable_rx_tx\n", dev->name);
281
282 aup->mac->control |= (MAC_RX_ENABLE | MAC_TX_ENABLE);
283 au_sync_delay(10);
284}
285
286static void
287au1000_adjust_link(struct net_device *dev)
288{
289 struct au1000_private *aup = netdev_priv(dev);
290 struct phy_device *phydev = aup->phy_dev;
291 unsigned long flags;
292
293 int status_change = 0;
294
295 BUG_ON(!aup->phy_dev);
296
297 spin_lock_irqsave(&aup->lock, flags);
298
299 if (phydev->link && (aup->old_speed != phydev->speed)) {
300 // speed changed
301
302 switch(phydev->speed) {
303 case SPEED_10:
304 case SPEED_100:
305 break;
306 default:
307 printk(KERN_WARNING
308 "%s: Speed (%d) is not 10/100 ???\n",
309 dev->name, phydev->speed);
310 break;
311 }
312
313 aup->old_speed = phydev->speed;
314
315 status_change = 1;
316 }
317
318 if (phydev->link && (aup->old_duplex != phydev->duplex)) {
319 // duplex mode changed
320
321 /* switching duplex mode requires to disable rx and tx! */
322 hard_stop(dev);
323
324 if (DUPLEX_FULL == phydev->duplex)
325 aup->mac->control = ((aup->mac->control
326 | MAC_FULL_DUPLEX)
327 & ~MAC_DISABLE_RX_OWN);
328 else
329 aup->mac->control = ((aup->mac->control
330 & ~MAC_FULL_DUPLEX)
331 | MAC_DISABLE_RX_OWN);
332 au_sync_delay(1);
333
334 enable_rx_tx(dev);
335 aup->old_duplex = phydev->duplex;
336
337 status_change = 1;
338 }
339
340 if(phydev->link != aup->old_link) {
341 // link state changed
342
343 if (!phydev->link) {
344 /* link went down */
345 aup->old_speed = 0;
346 aup->old_duplex = -1;
347 }
348
349 aup->old_link = phydev->link;
350 status_change = 1;
351 }
352
353 spin_unlock_irqrestore(&aup->lock, flags);
354
355 if (status_change) {
356 if (phydev->link)
357 printk(KERN_INFO "%s: link up (%d/%s)\n",
358 dev->name, phydev->speed,
359 DUPLEX_FULL == phydev->duplex ? "Full" : "Half");
360 else
361 printk(KERN_INFO "%s: link down\n", dev->name);
362 }
363}
364
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200365static int mii_probe (struct net_device *dev)
366{
Wang Chen454d7c92008-11-12 23:37:49 -0800367 struct au1000_private *const aup = netdev_priv(dev);
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200368 struct phy_device *phydev = NULL;
369
Florian Fainellibd2302c2009-11-10 01:13:38 +0100370 if (aup->phy_static_config) {
371 BUG_ON(aup->mac_id < 0 || aup->mac_id > 1);
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200372
Florian Fainellibd2302c2009-11-10 01:13:38 +0100373 if (aup->phy_addr)
374 phydev = aup->mii_bus->phy_map[aup->phy_addr];
375 else
376 printk (KERN_INFO DRV_NAME ":%s: using PHY-less setup\n",
377 dev->name);
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200378 return 0;
Florian Fainellibd2302c2009-11-10 01:13:38 +0100379 } else {
380 int phy_addr;
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200381
Florian Fainellibd2302c2009-11-10 01:13:38 +0100382 /* find the first (lowest address) PHY on the current MAC's MII bus */
383 for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++)
384 if (aup->mii_bus->phy_map[phy_addr]) {
385 phydev = aup->mii_bus->phy_map[phy_addr];
386 if (!aup->phy_search_highest_addr)
387 break; /* break out with first one found */
388 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389
Florian Fainellibd2302c2009-11-10 01:13:38 +0100390 if (aup->phy1_search_mac0) {
391 /* try harder to find a PHY */
392 if (!phydev && (aup->mac_id == 1)) {
393 /* no PHY found, maybe we have a dual PHY? */
394 printk (KERN_INFO DRV_NAME ": no PHY found on MAC1, "
395 "let's see if it's attached to MAC0...\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700396
Florian Fainellibd2302c2009-11-10 01:13:38 +0100397 /* find the first (lowest address) non-attached PHY on
398 * the MAC0 MII bus */
399 for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) {
400 struct phy_device *const tmp_phydev =
401 aup->mii_bus->phy_map[phy_addr];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402
Florian Fainellibd2302c2009-11-10 01:13:38 +0100403 if (aup->mac_id == 1)
404 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405
Florian Fainellibd2302c2009-11-10 01:13:38 +0100406 if (!tmp_phydev)
407 continue; /* no PHY here... */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408
Florian Fainellibd2302c2009-11-10 01:13:38 +0100409 if (tmp_phydev->attached_dev)
410 continue; /* already claimed by MAC0 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411
Florian Fainellibd2302c2009-11-10 01:13:38 +0100412 phydev = tmp_phydev;
413 break; /* found it */
414 }
415 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416 }
417 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200419 if (!phydev) {
420 printk (KERN_ERR DRV_NAME ":%s: no PHY found\n", dev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421 return -1;
422 }
423
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200424 /* now we are supposed to have a proper phydev, to attach to... */
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200425 BUG_ON(phydev->attached_dev);
426
Kay Sieversdb1d7bf2009-01-26 21:12:58 -0800427 phydev = phy_connect(dev, dev_name(&phydev->dev), &au1000_adjust_link,
428 0, PHY_INTERFACE_MODE_MII);
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200429
430 if (IS_ERR(phydev)) {
431 printk(KERN_ERR "%s: Could not attach to PHY\n", dev->name);
432 return PTR_ERR(phydev);
433 }
434
435 /* mask with MAC supported features */
436 phydev->supported &= (SUPPORTED_10baseT_Half
437 | SUPPORTED_10baseT_Full
438 | SUPPORTED_100baseT_Half
439 | SUPPORTED_100baseT_Full
440 | SUPPORTED_Autoneg
441 /* | SUPPORTED_Pause | SUPPORTED_Asym_Pause */
442 | SUPPORTED_MII
443 | SUPPORTED_TP);
444
445 phydev->advertising = phydev->supported;
446
447 aup->old_link = 0;
448 aup->old_speed = 0;
449 aup->old_duplex = -1;
450 aup->phy_dev = phydev;
451
452 printk(KERN_INFO "%s: attached PHY driver [%s] "
Kay Sieversdb1d7bf2009-01-26 21:12:58 -0800453 "(mii_bus:phy_addr=%s, irq=%d)\n", dev->name,
454 phydev->drv->name, dev_name(&phydev->dev), phydev->irq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455
456 return 0;
457}
458
459
460/*
461 * Buffer allocation/deallocation routines. The buffer descriptor returned
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400462 * has the virtual and dma address of a buffer suitable for
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463 * both, receive and transmit operations.
464 */
465static db_dest_t *GetFreeDB(struct au1000_private *aup)
466{
467 db_dest_t *pDB;
468 pDB = aup->pDBfree;
469
470 if (pDB) {
471 aup->pDBfree = pDB->pnext;
472 }
473 return pDB;
474}
475
476void ReleaseDB(struct au1000_private *aup, db_dest_t *pDB)
477{
478 db_dest_t *pDBfree = aup->pDBfree;
479 if (pDBfree)
480 pDBfree->pnext = pDB;
481 aup->pDBfree = pDB;
482}
483
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200484static void reset_mac_unlocked(struct net_device *dev)
485{
Wang Chen454d7c92008-11-12 23:37:49 -0800486 struct au1000_private *const aup = netdev_priv(dev);
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200487 int i;
488
489 hard_stop(dev);
490
491 *aup->enable = MAC_EN_CLOCK_ENABLE;
492 au_sync_delay(2);
493 *aup->enable = 0;
494 au_sync_delay(2);
495
Linus Torvalds1da177e2005-04-16 15:20:36 -0700496 aup->tx_full = 0;
497 for (i = 0; i < NUM_RX_DMA; i++) {
498 /* reset control bits */
499 aup->rx_dma_ring[i]->buff_stat &= ~0xf;
500 }
501 for (i = 0; i < NUM_TX_DMA; i++) {
502 /* reset control bits */
503 aup->tx_dma_ring[i]->buff_stat &= ~0xf;
504 }
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200505
506 aup->mac_enabled = 0;
507
Linus Torvalds1da177e2005-04-16 15:20:36 -0700508}
509
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200510static void reset_mac(struct net_device *dev)
511{
Wang Chen454d7c92008-11-12 23:37:49 -0800512 struct au1000_private *const aup = netdev_priv(dev);
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200513 unsigned long flags;
514
515 if (au1000_debug > 4)
516 printk(KERN_INFO "%s: reset mac, aup %x\n",
517 dev->name, (unsigned)aup);
518
519 spin_lock_irqsave(&aup->lock, flags);
520
521 reset_mac_unlocked (dev);
522
523 spin_unlock_irqrestore(&aup->lock, flags);
524}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700525
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400526/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700527 * Setup the receive and transmit "rings". These pointers are the addresses
528 * of the rx and tx MAC DMA registers so they are fixed by the hardware --
529 * these are not descriptors sitting in memory.
530 */
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400531static void
Linus Torvalds1da177e2005-04-16 15:20:36 -0700532setup_hw_rings(struct au1000_private *aup, u32 rx_base, u32 tx_base)
533{
534 int i;
535
536 for (i = 0; i < NUM_RX_DMA; i++) {
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400537 aup->rx_dma_ring[i] =
Linus Torvalds1da177e2005-04-16 15:20:36 -0700538 (volatile rx_dma_t *) (rx_base + sizeof(rx_dma_t)*i);
539 }
540 for (i = 0; i < NUM_TX_DMA; i++) {
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400541 aup->tx_dma_ring[i] =
Linus Torvalds1da177e2005-04-16 15:20:36 -0700542 (volatile tx_dma_t *) (tx_base + sizeof(tx_dma_t)*i);
543 }
544}
545
Linus Torvalds1da177e2005-04-16 15:20:36 -0700546/*
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200547 * ethtool operations
548 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700549
550static int au1000_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
551{
Wang Chen454d7c92008-11-12 23:37:49 -0800552 struct au1000_private *aup = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700553
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200554 if (aup->phy_dev)
555 return phy_ethtool_gset(aup->phy_dev, cmd);
556
557 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700558}
559
560static int au1000_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
561{
Wang Chen454d7c92008-11-12 23:37:49 -0800562 struct au1000_private *aup = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700563
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200564 if (!capable(CAP_NET_ADMIN))
565 return -EPERM;
566
567 if (aup->phy_dev)
568 return phy_ethtool_sset(aup->phy_dev, cmd);
569
570 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700571}
572
573static void
574au1000_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
575{
Wang Chen454d7c92008-11-12 23:37:49 -0800576 struct au1000_private *aup = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577
578 strcpy(info->driver, DRV_NAME);
579 strcpy(info->version, DRV_VERSION);
580 info->fw_version[0] = '\0';
581 sprintf(info->bus_info, "%s %d", DRV_NAME, aup->mac_id);
582 info->regdump_len = 0;
583}
584
Jeff Garzik7282d492006-09-13 14:30:00 -0400585static const struct ethtool_ops au1000_ethtool_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700586 .get_settings = au1000_get_settings,
587 .set_settings = au1000_set_settings,
588 .get_drvinfo = au1000_get_drvinfo,
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200589 .get_link = ethtool_op_get_link,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700590};
591
Florian Fainelli5ef30412009-01-22 14:06:25 -0800592
593/*
594 * Initialize the interface.
595 *
596 * When the device powers up, the clocks are disabled and the
597 * mac is in reset state. When the interface is closed, we
598 * do the same -- reset the device and disable the clocks to
599 * conserve power. Thus, whenever au1000_init() is called,
600 * the device should already be in reset state.
601 */
602static int au1000_init(struct net_device *dev)
603{
604 struct au1000_private *aup = netdev_priv(dev);
605 unsigned long flags;
606 int i;
607 u32 control;
608
609 if (au1000_debug > 4)
610 printk("%s: au1000_init\n", dev->name);
611
612 /* bring the device out of reset */
613 enable_mac(dev, 1);
614
615 spin_lock_irqsave(&aup->lock, flags);
616
617 aup->mac->control = 0;
618 aup->tx_head = (aup->tx_dma_ring[0]->buff_stat & 0xC) >> 2;
619 aup->tx_tail = aup->tx_head;
620 aup->rx_head = (aup->rx_dma_ring[0]->buff_stat & 0xC) >> 2;
621
622 aup->mac->mac_addr_high = dev->dev_addr[5]<<8 | dev->dev_addr[4];
623 aup->mac->mac_addr_low = dev->dev_addr[3]<<24 | dev->dev_addr[2]<<16 |
624 dev->dev_addr[1]<<8 | dev->dev_addr[0];
625
626 for (i = 0; i < NUM_RX_DMA; i++) {
627 aup->rx_dma_ring[i]->buff_stat |= RX_DMA_ENABLE;
628 }
629 au_sync();
630
631 control = MAC_RX_ENABLE | MAC_TX_ENABLE;
632#ifndef CONFIG_CPU_LITTLE_ENDIAN
633 control |= MAC_BIG_ENDIAN;
634#endif
635 if (aup->phy_dev) {
636 if (aup->phy_dev->link && (DUPLEX_FULL == aup->phy_dev->duplex))
637 control |= MAC_FULL_DUPLEX;
638 else
639 control |= MAC_DISABLE_RX_OWN;
640 } else { /* PHY-less op, assume full-duplex */
641 control |= MAC_FULL_DUPLEX;
642 }
643
644 aup->mac->control = control;
645 aup->mac->vlan1_tag = 0x8100; /* activate vlan support */
646 au_sync();
647
648 spin_unlock_irqrestore(&aup->lock, flags);
649 return 0;
650}
651
652static inline void update_rx_stats(struct net_device *dev, u32 status)
653{
Florian Fainelli5ef30412009-01-22 14:06:25 -0800654 struct net_device_stats *ps = &dev->stats;
655
656 ps->rx_packets++;
657 if (status & RX_MCAST_FRAME)
658 ps->multicast++;
659
660 if (status & RX_ERROR) {
661 ps->rx_errors++;
662 if (status & RX_MISSED_FRAME)
663 ps->rx_missed_errors++;
roel kluin4989ccb2009-10-06 09:54:18 +0000664 if (status & (RX_OVERLEN | RX_RUNT | RX_LEN_ERROR))
Florian Fainelli5ef30412009-01-22 14:06:25 -0800665 ps->rx_length_errors++;
666 if (status & RX_CRC_ERROR)
667 ps->rx_crc_errors++;
668 if (status & RX_COLL)
669 ps->collisions++;
670 }
671 else
672 ps->rx_bytes += status & RX_FRAME_LEN_MASK;
673
674}
675
676/*
677 * Au1000 receive routine.
678 */
679static int au1000_rx(struct net_device *dev)
680{
681 struct au1000_private *aup = netdev_priv(dev);
682 struct sk_buff *skb;
683 volatile rx_dma_t *prxd;
684 u32 buff_stat, status;
685 db_dest_t *pDB;
686 u32 frmlen;
687
688 if (au1000_debug > 5)
689 printk("%s: au1000_rx head %d\n", dev->name, aup->rx_head);
690
691 prxd = aup->rx_dma_ring[aup->rx_head];
692 buff_stat = prxd->buff_stat;
693 while (buff_stat & RX_T_DONE) {
694 status = prxd->status;
695 pDB = aup->rx_db_inuse[aup->rx_head];
696 update_rx_stats(dev, status);
697 if (!(status & RX_ERROR)) {
698
699 /* good frame */
700 frmlen = (status & RX_FRAME_LEN_MASK);
701 frmlen -= 4; /* Remove FCS */
702 skb = dev_alloc_skb(frmlen + 2);
703 if (skb == NULL) {
704 printk(KERN_ERR
705 "%s: Memory squeeze, dropping packet.\n",
706 dev->name);
707 dev->stats.rx_dropped++;
708 continue;
709 }
710 skb_reserve(skb, 2); /* 16 byte IP header align */
711 skb_copy_to_linear_data(skb,
712 (unsigned char *)pDB->vaddr, frmlen);
713 skb_put(skb, frmlen);
714 skb->protocol = eth_type_trans(skb, dev);
715 netif_rx(skb); /* pass the packet to upper layers */
716 }
717 else {
718 if (au1000_debug > 4) {
719 if (status & RX_MISSED_FRAME)
720 printk("rx miss\n");
721 if (status & RX_WDOG_TIMER)
722 printk("rx wdog\n");
723 if (status & RX_RUNT)
724 printk("rx runt\n");
725 if (status & RX_OVERLEN)
726 printk("rx overlen\n");
727 if (status & RX_COLL)
728 printk("rx coll\n");
729 if (status & RX_MII_ERROR)
730 printk("rx mii error\n");
731 if (status & RX_CRC_ERROR)
732 printk("rx crc error\n");
733 if (status & RX_LEN_ERROR)
734 printk("rx len error\n");
735 if (status & RX_U_CNTRL_FRAME)
736 printk("rx u control frame\n");
Florian Fainelli5ef30412009-01-22 14:06:25 -0800737 }
738 }
739 prxd->buff_stat = (u32)(pDB->dma_addr | RX_DMA_ENABLE);
740 aup->rx_head = (aup->rx_head + 1) & (NUM_RX_DMA - 1);
741 au_sync();
742
743 /* next descriptor */
744 prxd = aup->rx_dma_ring[aup->rx_head];
745 buff_stat = prxd->buff_stat;
746 }
747 return 0;
748}
749
750static void update_tx_stats(struct net_device *dev, u32 status)
751{
752 struct au1000_private *aup = netdev_priv(dev);
753 struct net_device_stats *ps = &dev->stats;
754
755 if (status & TX_FRAME_ABORTED) {
756 if (!aup->phy_dev || (DUPLEX_FULL == aup->phy_dev->duplex)) {
757 if (status & (TX_JAB_TIMEOUT | TX_UNDERRUN)) {
758 /* any other tx errors are only valid
759 * in half duplex mode */
760 ps->tx_errors++;
761 ps->tx_aborted_errors++;
762 }
763 }
764 else {
765 ps->tx_errors++;
766 ps->tx_aborted_errors++;
767 if (status & (TX_NO_CARRIER | TX_LOSS_CARRIER))
768 ps->tx_carrier_errors++;
769 }
770 }
771}
772
773/*
774 * Called from the interrupt service routine to acknowledge
775 * the TX DONE bits. This is a must if the irq is setup as
776 * edge triggered.
777 */
778static void au1000_tx_ack(struct net_device *dev)
779{
780 struct au1000_private *aup = netdev_priv(dev);
781 volatile tx_dma_t *ptxd;
782
783 ptxd = aup->tx_dma_ring[aup->tx_tail];
784
785 while (ptxd->buff_stat & TX_T_DONE) {
786 update_tx_stats(dev, ptxd->status);
787 ptxd->buff_stat &= ~TX_T_DONE;
788 ptxd->len = 0;
789 au_sync();
790
791 aup->tx_tail = (aup->tx_tail + 1) & (NUM_TX_DMA - 1);
792 ptxd = aup->tx_dma_ring[aup->tx_tail];
793
794 if (aup->tx_full) {
795 aup->tx_full = 0;
796 netif_wake_queue(dev);
797 }
798 }
799}
800
801/*
802 * Au1000 interrupt service routine.
803 */
804static irqreturn_t au1000_interrupt(int irq, void *dev_id)
805{
806 struct net_device *dev = dev_id;
807
808 /* Handle RX interrupts first to minimize chance of overrun */
809
810 au1000_rx(dev);
811 au1000_tx_ack(dev);
812 return IRQ_RETVAL(1);
813}
814
815static int au1000_open(struct net_device *dev)
816{
817 int retval;
818 struct au1000_private *aup = netdev_priv(dev);
819
820 if (au1000_debug > 4)
821 printk("%s: open: dev=%p\n", dev->name, dev);
822
Joe Perchesa0607fd2009-11-18 23:29:17 -0800823 if ((retval = request_irq(dev->irq, au1000_interrupt, 0,
Florian Fainelli5ef30412009-01-22 14:06:25 -0800824 dev->name, dev))) {
825 printk(KERN_ERR "%s: unable to get IRQ %d\n",
826 dev->name, dev->irq);
827 return retval;
828 }
829
830 if ((retval = au1000_init(dev))) {
831 printk(KERN_ERR "%s: error in au1000_init\n", dev->name);
832 free_irq(dev->irq, dev);
833 return retval;
834 }
835
836 if (aup->phy_dev) {
837 /* cause the PHY state machine to schedule a link state check */
838 aup->phy_dev->state = PHY_CHANGELINK;
839 phy_start(aup->phy_dev);
840 }
841
842 netif_start_queue(dev);
843
844 if (au1000_debug > 4)
845 printk("%s: open: Initialization done.\n", dev->name);
846
847 return 0;
848}
849
850static int au1000_close(struct net_device *dev)
851{
852 unsigned long flags;
853 struct au1000_private *const aup = netdev_priv(dev);
854
855 if (au1000_debug > 4)
856 printk("%s: close: dev=%p\n", dev->name, dev);
857
858 if (aup->phy_dev)
859 phy_stop(aup->phy_dev);
860
861 spin_lock_irqsave(&aup->lock, flags);
862
863 reset_mac_unlocked (dev);
864
865 /* stop the device */
866 netif_stop_queue(dev);
867
868 /* disable the interrupt */
869 free_irq(dev->irq, dev);
870 spin_unlock_irqrestore(&aup->lock, flags);
871
872 return 0;
873}
874
875/*
876 * Au1000 transmit routine.
877 */
Stephen Hemminger613573252009-08-31 19:50:58 +0000878static netdev_tx_t au1000_tx(struct sk_buff *skb, struct net_device *dev)
Florian Fainelli5ef30412009-01-22 14:06:25 -0800879{
880 struct au1000_private *aup = netdev_priv(dev);
881 struct net_device_stats *ps = &dev->stats;
882 volatile tx_dma_t *ptxd;
883 u32 buff_stat;
884 db_dest_t *pDB;
885 int i;
886
887 if (au1000_debug > 5)
888 printk("%s: tx: aup %x len=%d, data=%p, head %d\n",
889 dev->name, (unsigned)aup, skb->len,
890 skb->data, aup->tx_head);
891
892 ptxd = aup->tx_dma_ring[aup->tx_head];
893 buff_stat = ptxd->buff_stat;
894 if (buff_stat & TX_DMA_ENABLE) {
895 /* We've wrapped around and the transmitter is still busy */
896 netif_stop_queue(dev);
897 aup->tx_full = 1;
Patrick McHardy5b548142009-06-12 06:22:29 +0000898 return NETDEV_TX_BUSY;
Florian Fainelli5ef30412009-01-22 14:06:25 -0800899 }
900 else if (buff_stat & TX_T_DONE) {
901 update_tx_stats(dev, ptxd->status);
902 ptxd->len = 0;
903 }
904
905 if (aup->tx_full) {
906 aup->tx_full = 0;
907 netif_wake_queue(dev);
908 }
909
910 pDB = aup->tx_db_inuse[aup->tx_head];
Florian Fainellibd2302c2009-11-10 01:13:38 +0100911 skb_copy_from_linear_data(skb, (void *)pDB->vaddr, skb->len);
Florian Fainelli5ef30412009-01-22 14:06:25 -0800912 if (skb->len < ETH_ZLEN) {
913 for (i=skb->len; i<ETH_ZLEN; i++) {
914 ((char *)pDB->vaddr)[i] = 0;
915 }
916 ptxd->len = ETH_ZLEN;
917 }
918 else
919 ptxd->len = skb->len;
920
921 ps->tx_packets++;
922 ps->tx_bytes += ptxd->len;
923
924 ptxd->buff_stat = pDB->dma_addr | TX_DMA_ENABLE;
925 au_sync();
926 dev_kfree_skb(skb);
927 aup->tx_head = (aup->tx_head + 1) & (NUM_TX_DMA - 1);
928 dev->trans_start = jiffies;
Patrick McHardy6ed10652009-06-23 06:03:08 +0000929 return NETDEV_TX_OK;
Florian Fainelli5ef30412009-01-22 14:06:25 -0800930}
931
932/*
933 * The Tx ring has been full longer than the watchdog timeout
934 * value. The transmitter must be hung?
935 */
936static void au1000_tx_timeout(struct net_device *dev)
937{
938 printk(KERN_ERR "%s: au1000_tx_timeout: dev=%p\n", dev->name, dev);
939 reset_mac(dev);
940 au1000_init(dev);
941 dev->trans_start = jiffies;
942 netif_wake_queue(dev);
943}
944
Alexander Beregalovd9a92ce2009-04-14 18:30:23 +0000945static void au1000_multicast_list(struct net_device *dev)
Florian Fainelli5ef30412009-01-22 14:06:25 -0800946{
947 struct au1000_private *aup = netdev_priv(dev);
948
949 if (au1000_debug > 4)
Alexander Beregalovd9a92ce2009-04-14 18:30:23 +0000950 printk("%s: au1000_multicast_list: flags=%x\n", dev->name, dev->flags);
Florian Fainelli5ef30412009-01-22 14:06:25 -0800951
952 if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
953 aup->mac->control |= MAC_PROMISCUOUS;
954 } else if ((dev->flags & IFF_ALLMULTI) ||
Jiri Pirko4cd24ea2010-02-08 04:30:35 +0000955 netdev_mc_count(dev) > MULTICAST_FILTER_LIMIT) {
Florian Fainelli5ef30412009-01-22 14:06:25 -0800956 aup->mac->control |= MAC_PASS_ALL_MULTI;
957 aup->mac->control &= ~MAC_PROMISCUOUS;
958 printk(KERN_INFO "%s: Pass all multicast\n", dev->name);
959 } else {
Florian Fainelli5ef30412009-01-22 14:06:25 -0800960 struct dev_mc_list *mclist;
961 u32 mc_filter[2]; /* Multicast hash filter */
962
963 mc_filter[1] = mc_filter[0] = 0;
Jiri Pirko0ddf4772010-02-20 00:13:58 +0000964 netdev_for_each_mc_addr(mclist, dev)
Florian Fainelli5ef30412009-01-22 14:06:25 -0800965 set_bit(ether_crc(ETH_ALEN, mclist->dmi_addr)>>26,
966 (long *)mc_filter);
Florian Fainelli5ef30412009-01-22 14:06:25 -0800967 aup->mac->multi_hash_high = mc_filter[1];
968 aup->mac->multi_hash_low = mc_filter[0];
969 aup->mac->control &= ~MAC_PROMISCUOUS;
970 aup->mac->control |= MAC_HASH_MODE;
971 }
972}
973
974static int au1000_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
975{
976 struct au1000_private *aup = netdev_priv(dev);
977
978 if (!netif_running(dev)) return -EINVAL;
979
980 if (!aup->phy_dev) return -EINVAL; // PHY not controllable
981
982 return phy_mii_ioctl(aup->phy_dev, if_mii(rq), cmd);
983}
984
Alexander Beregalovd9a92ce2009-04-14 18:30:23 +0000985static const struct net_device_ops au1000_netdev_ops = {
986 .ndo_open = au1000_open,
987 .ndo_stop = au1000_close,
988 .ndo_start_xmit = au1000_tx,
989 .ndo_set_multicast_list = au1000_multicast_list,
990 .ndo_do_ioctl = au1000_ioctl,
991 .ndo_tx_timeout = au1000_tx_timeout,
992 .ndo_set_mac_address = eth_mac_addr,
993 .ndo_validate_addr = eth_validate_addr,
994 .ndo_change_mtu = eth_change_mtu,
995};
996
Florian Fainellibd2302c2009-11-10 01:13:38 +0100997static int __devinit au1000_probe(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700998{
999 static unsigned version_printed = 0;
1000 struct au1000_private *aup = NULL;
Florian Fainellibd2302c2009-11-10 01:13:38 +01001001 struct au1000_eth_platform_data *pd;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001002 struct net_device *dev = NULL;
1003 db_dest_t *pDB, *pDBfree;
Florian Fainellibd2302c2009-11-10 01:13:38 +01001004 int irq, i, err = 0;
1005 struct resource *base, *macen;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001006 char ethaddr[6];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001007
Florian Fainellibd2302c2009-11-10 01:13:38 +01001008 base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1009 if (!base) {
1010 printk(KERN_ERR DRV_NAME ": failed to retrieve base register\n");
1011 err = -ENODEV;
1012 goto out;
1013 }
Sergei Shtylyov89be0502006-04-19 22:46:21 +04001014
Florian Fainellibd2302c2009-11-10 01:13:38 +01001015 macen = platform_get_resource(pdev, IORESOURCE_MEM, 1);
1016 if (!macen) {
1017 printk(KERN_ERR DRV_NAME ": failed to retrieve MAC Enable register\n");
1018 err = -ENODEV;
1019 goto out;
1020 }
Sergei Shtylyov89be0502006-04-19 22:46:21 +04001021
Florian Fainellibd2302c2009-11-10 01:13:38 +01001022 irq = platform_get_irq(pdev, 0);
1023 if (irq < 0) {
1024 printk(KERN_ERR DRV_NAME ": failed to retrieve IRQ\n");
1025 err = -ENODEV;
1026 goto out;
1027 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001028
Florian Fainellibd2302c2009-11-10 01:13:38 +01001029 if (!request_mem_region(base->start, resource_size(base), pdev->name)) {
1030 printk(KERN_ERR DRV_NAME ": failed to request memory region for base registers\n");
1031 err = -ENXIO;
1032 goto out;
1033 }
1034
1035 if (!request_mem_region(macen->start, resource_size(macen), pdev->name)) {
1036 printk(KERN_ERR DRV_NAME ": failed to request memory region for MAC enable register\n");
1037 err = -ENXIO;
1038 goto err_request;
1039 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001040
1041 dev = alloc_etherdev(sizeof(struct au1000_private));
1042 if (!dev) {
Sergei Shtylyov89be0502006-04-19 22:46:21 +04001043 printk(KERN_ERR "%s: alloc_etherdev failed\n", DRV_NAME);
Florian Fainellibd2302c2009-11-10 01:13:38 +01001044 err = -ENOMEM;
1045 goto err_alloc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001046 }
1047
Florian Fainellibd2302c2009-11-10 01:13:38 +01001048 SET_NETDEV_DEV(dev, &pdev->dev);
1049 platform_set_drvdata(pdev, dev);
Wang Chen454d7c92008-11-12 23:37:49 -08001050 aup = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001051
Martin Gebert533763d2008-07-23 09:40:09 +02001052 spin_lock_init(&aup->lock);
1053
Linus Torvalds1da177e2005-04-16 15:20:36 -07001054 /* Allocate the data buffers */
1055 /* Snooping works fine with eth on all au1xxx */
Sergei Shtylyov89be0502006-04-19 22:46:21 +04001056 aup->vaddr = (u32)dma_alloc_noncoherent(NULL, MAX_BUF_SIZE *
1057 (NUM_TX_BUFFS + NUM_RX_BUFFS),
1058 &aup->dma_addr, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001059 if (!aup->vaddr) {
Florian Fainellibd2302c2009-11-10 01:13:38 +01001060 printk(KERN_ERR DRV_NAME ": failed to allocate data buffers\n");
1061 err = -ENOMEM;
1062 goto err_vaddr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001063 }
1064
1065 /* aup->mac is the base address of the MAC's registers */
Florian Fainellibd2302c2009-11-10 01:13:38 +01001066 aup->mac = (volatile mac_reg_t *)ioremap_nocache(base->start, resource_size(base));
1067 if (!aup->mac) {
1068 printk(KERN_ERR DRV_NAME ": failed to ioremap MAC registers\n");
1069 err = -ENXIO;
1070 goto err_remap1;
1071 }
Sergei Shtylyov89be0502006-04-19 22:46:21 +04001072
Florian Fainellibd2302c2009-11-10 01:13:38 +01001073 /* Setup some variables for quick register address access */
1074 aup->enable = (volatile u32 *)ioremap_nocache(macen->start, resource_size(macen));
1075 if (!aup->enable) {
1076 printk(KERN_ERR DRV_NAME ": failed to ioremap MAC enable register\n");
1077 err = -ENXIO;
1078 goto err_remap2;
1079 }
1080 aup->mac_id = pdev->id;
Sergei Shtylyov89be0502006-04-19 22:46:21 +04001081
Florian Fainellibd2302c2009-11-10 01:13:38 +01001082 if (pdev->id == 0) {
Yoichi Yuasa2de88922007-10-15 19:06:20 +09001083 if (prom_get_ethernet_addr(ethaddr) == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001084 memcpy(au1000_mac_addr, ethaddr, sizeof(au1000_mac_addr));
Sergei Shtylyov89be0502006-04-19 22:46:21 +04001085 else {
Yoichi Yuasa2de88922007-10-15 19:06:20 +09001086 printk(KERN_INFO "%s: No MAC address found\n",
1087 dev->name);
Sergei Shtylyov89be0502006-04-19 22:46:21 +04001088 /* Use the hard coded MAC addresses */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001089 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001090
Sergei Shtylyov89be0502006-04-19 22:46:21 +04001091 setup_hw_rings(aup, MAC0_RX_DMA_ADDR, MAC0_TX_DMA_ADDR);
Florian Fainellibd2302c2009-11-10 01:13:38 +01001092 } else if (pdev->id == 1)
Sergei Shtylyov89be0502006-04-19 22:46:21 +04001093 setup_hw_rings(aup, MAC1_RX_DMA_ADDR, MAC1_TX_DMA_ADDR);
1094
1095 /*
1096 * Assign to the Ethernet ports two consecutive MAC addresses
1097 * to match those that are printed on their stickers
1098 */
1099 memcpy(dev->dev_addr, au1000_mac_addr, sizeof(au1000_mac_addr));
Florian Fainellibd2302c2009-11-10 01:13:38 +01001100 dev->dev_addr[5] += pdev->id;
Sergei Shtylyov89be0502006-04-19 22:46:21 +04001101
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +02001102 *aup->enable = 0;
1103 aup->mac_enabled = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001104
Florian Fainellibd2302c2009-11-10 01:13:38 +01001105 pd = pdev->dev.platform_data;
1106 if (!pd) {
1107 printk(KERN_INFO DRV_NAME ": no platform_data passed, PHY search on MAC0\n");
1108 aup->phy1_search_mac0 = 1;
1109 } else {
1110 aup->phy_static_config = pd->phy_static_config;
1111 aup->phy_search_highest_addr = pd->phy_search_highest_addr;
1112 aup->phy1_search_mac0 = pd->phy1_search_mac0;
1113 aup->phy_addr = pd->phy_addr;
1114 aup->phy_busid = pd->phy_busid;
1115 aup->phy_irq = pd->phy_irq;
1116 }
1117
1118 if (aup->phy_busid && aup->phy_busid > 0) {
1119 printk(KERN_ERR DRV_NAME ": MAC0-associated PHY attached 2nd MACs MII"
1120 "bus not supported yet\n");
1121 err = -ENODEV;
1122 goto err_mdiobus_alloc;
1123 }
1124
Lennert Buytenhek298cf9be2008-10-08 16:29:57 -07001125 aup->mii_bus = mdiobus_alloc();
Florian Fainellibd2302c2009-11-10 01:13:38 +01001126 if (aup->mii_bus == NULL) {
1127 printk(KERN_ERR DRV_NAME ": failed to allocate mdiobus structure\n");
1128 err = -ENOMEM;
1129 goto err_mdiobus_alloc;
1130 }
Lennert Buytenhek298cf9be2008-10-08 16:29:57 -07001131
1132 aup->mii_bus->priv = dev;
Adrian Bunk1210dde2008-10-12 21:02:19 -07001133 aup->mii_bus->read = au1000_mdiobus_read;
1134 aup->mii_bus->write = au1000_mdiobus_write;
1135 aup->mii_bus->reset = au1000_mdiobus_reset;
Lennert Buytenhek298cf9be2008-10-08 16:29:57 -07001136 aup->mii_bus->name = "au1000_eth_mii";
1137 snprintf(aup->mii_bus->id, MII_BUS_ID_SIZE, "%x", aup->mac_id);
1138 aup->mii_bus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL);
roel kluindcbfef82009-08-30 22:40:15 +00001139 if (aup->mii_bus->irq == NULL)
1140 goto err_out;
1141
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +02001142 for(i = 0; i < PHY_MAX_ADDR; ++i)
Lennert Buytenhek298cf9be2008-10-08 16:29:57 -07001143 aup->mii_bus->irq[i] = PHY_POLL;
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +02001144 /* if known, set corresponding PHY IRQs */
Florian Fainellibd2302c2009-11-10 01:13:38 +01001145 if (aup->phy_static_config)
1146 if (aup->phy_irq && aup->phy_busid == aup->mac_id)
1147 aup->mii_bus->irq[aup->phy_addr] = aup->phy_irq;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001148
Florian Fainellibd2302c2009-11-10 01:13:38 +01001149 err = mdiobus_register(aup->mii_bus);
1150 if (err) {
1151 printk(KERN_ERR DRV_NAME " failed to register MDIO bus\n");
1152 goto err_mdiobus_reg;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001153 }
1154
Florian Fainellibd2302c2009-11-10 01:13:38 +01001155 if (mii_probe(dev) != 0)
1156 goto err_out;
1157
Linus Torvalds1da177e2005-04-16 15:20:36 -07001158 pDBfree = NULL;
1159 /* setup the data buffer descriptors and attach a buffer to each one */
1160 pDB = aup->db;
1161 for (i = 0; i < (NUM_TX_BUFFS+NUM_RX_BUFFS); i++) {
1162 pDB->pnext = pDBfree;
1163 pDBfree = pDB;
1164 pDB->vaddr = (u32 *)((unsigned)aup->vaddr + MAX_BUF_SIZE*i);
1165 pDB->dma_addr = (dma_addr_t)virt_to_bus(pDB->vaddr);
1166 pDB++;
1167 }
1168 aup->pDBfree = pDBfree;
1169
1170 for (i = 0; i < NUM_RX_DMA; i++) {
1171 pDB = GetFreeDB(aup);
1172 if (!pDB) {
1173 goto err_out;
1174 }
1175 aup->rx_dma_ring[i]->buff_stat = (unsigned)pDB->dma_addr;
1176 aup->rx_db_inuse[i] = pDB;
1177 }
1178 for (i = 0; i < NUM_TX_DMA; i++) {
1179 pDB = GetFreeDB(aup);
1180 if (!pDB) {
1181 goto err_out;
1182 }
1183 aup->tx_dma_ring[i]->buff_stat = (unsigned)pDB->dma_addr;
1184 aup->tx_dma_ring[i]->len = 0;
1185 aup->tx_db_inuse[i] = pDB;
1186 }
1187
Florian Fainellibd2302c2009-11-10 01:13:38 +01001188 dev->base_addr = base->start;
1189 dev->irq = irq;
1190 dev->netdev_ops = &au1000_netdev_ops;
1191 SET_ETHTOOL_OPS(dev, &au1000_ethtool_ops);
1192 dev->watchdog_timeo = ETH_TX_TIMEOUT;
1193
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001194 /*
1195 * The boot code uses the ethernet controller, so reset it to start
Linus Torvalds1da177e2005-04-16 15:20:36 -07001196 * fresh. au1000_init() expects that the device is in reset state.
1197 */
1198 reset_mac(dev);
1199
Florian Fainellibd2302c2009-11-10 01:13:38 +01001200 err = register_netdev(dev);
1201 if (err) {
1202 printk(KERN_ERR DRV_NAME "%s: Cannot register net device, aborting.\n",
1203 dev->name);
1204 goto err_out;
1205 }
1206
1207 printk("%s: Au1xx0 Ethernet found at 0x%lx, irq %d\n",
1208 dev->name, (unsigned long)base->start, irq);
1209 if (version_printed++ == 0)
1210 printk("%s version %s %s\n", DRV_NAME, DRV_VERSION, DRV_AUTHOR);
1211
1212 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001213
1214err_out:
Florian Fainellibd2302c2009-11-10 01:13:38 +01001215 if (aup->mii_bus != NULL)
Lennert Buytenhek298cf9be2008-10-08 16:29:57 -07001216 mdiobus_unregister(aup->mii_bus);
Lennert Buytenhek298cf9be2008-10-08 16:29:57 -07001217
Linus Torvalds1da177e2005-04-16 15:20:36 -07001218 /* here we should have a valid dev plus aup-> register addresses
1219 * so we can reset the mac properly.*/
1220 reset_mac(dev);
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +02001221
Linus Torvalds1da177e2005-04-16 15:20:36 -07001222 for (i = 0; i < NUM_RX_DMA; i++) {
1223 if (aup->rx_db_inuse[i])
1224 ReleaseDB(aup, aup->rx_db_inuse[i]);
1225 }
1226 for (i = 0; i < NUM_TX_DMA; i++) {
1227 if (aup->tx_db_inuse[i])
1228 ReleaseDB(aup, aup->tx_db_inuse[i]);
1229 }
Florian Fainellibd2302c2009-11-10 01:13:38 +01001230err_mdiobus_reg:
1231 mdiobus_free(aup->mii_bus);
1232err_mdiobus_alloc:
1233 iounmap(aup->enable);
1234err_remap2:
1235 iounmap(aup->mac);
1236err_remap1:
Sergei Shtylyov89be0502006-04-19 22:46:21 +04001237 dma_free_noncoherent(NULL, MAX_BUF_SIZE * (NUM_TX_BUFFS + NUM_RX_BUFFS),
1238 (void *)aup->vaddr, aup->dma_addr);
Florian Fainellibd2302c2009-11-10 01:13:38 +01001239err_vaddr:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001240 free_netdev(dev);
Florian Fainellibd2302c2009-11-10 01:13:38 +01001241err_alloc:
1242 release_mem_region(macen->start, resource_size(macen));
1243err_request:
1244 release_mem_region(base->start, resource_size(base));
1245out:
1246 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001247}
1248
Florian Fainellibd2302c2009-11-10 01:13:38 +01001249static int __devexit au1000_remove(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001250{
Florian Fainellibd2302c2009-11-10 01:13:38 +01001251 struct net_device *dev = platform_get_drvdata(pdev);
1252 struct au1000_private *aup = netdev_priv(dev);
1253 int i;
1254 struct resource *base, *macen;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001255
Florian Fainellibd2302c2009-11-10 01:13:38 +01001256 platform_set_drvdata(pdev, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001257
Florian Fainellibd2302c2009-11-10 01:13:38 +01001258 unregister_netdev(dev);
1259 mdiobus_unregister(aup->mii_bus);
1260 mdiobus_free(aup->mii_bus);
1261
1262 for (i = 0; i < NUM_RX_DMA; i++)
1263 if (aup->rx_db_inuse[i])
1264 ReleaseDB(aup, aup->rx_db_inuse[i]);
1265
1266 for (i = 0; i < NUM_TX_DMA; i++)
1267 if (aup->tx_db_inuse[i])
1268 ReleaseDB(aup, aup->tx_db_inuse[i]);
1269
1270 dma_free_noncoherent(NULL, MAX_BUF_SIZE *
1271 (NUM_TX_BUFFS + NUM_RX_BUFFS),
1272 (void *)aup->vaddr, aup->dma_addr);
1273
1274 iounmap(aup->mac);
1275 iounmap(aup->enable);
1276
1277 base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1278 release_mem_region(base->start, resource_size(base));
1279
1280 macen = platform_get_resource(pdev, IORESOURCE_MEM, 1);
1281 release_mem_region(macen->start, resource_size(macen));
1282
1283 free_netdev(dev);
1284
Linus Torvalds1da177e2005-04-16 15:20:36 -07001285 return 0;
1286}
1287
Florian Fainellibd2302c2009-11-10 01:13:38 +01001288static struct platform_driver au1000_eth_driver = {
1289 .probe = au1000_probe,
1290 .remove = __devexit_p(au1000_remove),
1291 .driver = {
1292 .name = "au1000-eth",
1293 .owner = THIS_MODULE,
1294 },
1295};
1296MODULE_ALIAS("platform:au1000-eth");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001297
Florian Fainellibd2302c2009-11-10 01:13:38 +01001298
1299static int __init au1000_init_module(void)
1300{
1301 return platform_driver_register(&au1000_eth_driver);
1302}
1303
1304static void __exit au1000_exit_module(void)
1305{
1306 platform_driver_unregister(&au1000_eth_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001307}
1308
Linus Torvalds1da177e2005-04-16 15:20:36 -07001309module_init(au1000_init_module);
Florian Fainellibd2302c2009-11-10 01:13:38 +01001310module_exit(au1000_exit_module);