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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 */
Ralf Baechled791c2b2007-06-24 15:59:54 +020037#include <linux/dma-mapping.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070038#include <linux/module.h>
39#include <linux/kernel.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070040#include <linux/string.h>
41#include <linux/timer.h>
42#include <linux/errno.h>
43#include <linux/in.h>
44#include <linux/ioport.h>
45#include <linux/bitops.h>
46#include <linux/slab.h>
47#include <linux/interrupt.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070048#include <linux/init.h>
49#include <linux/netdevice.h>
50#include <linux/etherdevice.h>
51#include <linux/ethtool.h>
52#include <linux/mii.h>
53#include <linux/skbuff.h>
54#include <linux/delay.h>
Herbert Valerio Riedel8cd35da2006-05-01 15:37:09 +020055#include <linux/crc32.h>
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +020056#include <linux/phy.h>
Yoichi Yuasa25b31cb2007-10-15 19:11:24 +090057
58#include <asm/cpu.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070059#include <asm/mipsregs.h>
60#include <asm/irq.h>
61#include <asm/io.h>
62#include <asm/processor.h>
63
Yoichi Yuasa25b31cb2007-10-15 19:11:24 +090064#include <au1000.h>
65#include <prom.h>
66
Linus Torvalds1da177e2005-04-16 15:20:36 -070067#include "au1000_eth.h"
68
69#ifdef AU1000_ETH_DEBUG
70static int au1000_debug = 5;
71#else
72static int au1000_debug = 3;
73#endif
74
Sergei Shtylyov89be0502006-04-19 22:46:21 +040075#define DRV_NAME "au1000_eth"
Andy Gospodarekd5b20692006-09-11 17:39:18 -040076#define DRV_VERSION "1.6"
Linus Torvalds1da177e2005-04-16 15:20:36 -070077#define DRV_AUTHOR "Pete Popov <ppopov@embeddedalley.com>"
78#define DRV_DESC "Au1xxx on-chip Ethernet driver"
79
80MODULE_AUTHOR(DRV_AUTHOR);
81MODULE_DESCRIPTION(DRV_DESC);
82MODULE_LICENSE("GPL");
83
Linus Torvalds1da177e2005-04-16 15:20:36 -070084/*
85 * Theory of operation
86 *
Jeff Garzik6aa20a22006-09-13 13:24:59 -040087 * The Au1000 MACs use a simple rx and tx descriptor ring scheme.
88 * There are four receive and four transmit descriptors. These
89 * descriptors are not in memory; rather, they are just a set of
Linus Torvalds1da177e2005-04-16 15:20:36 -070090 * hardware registers.
91 *
92 * Since the Au1000 has a coherent data cache, the receive and
Jeff Garzik6aa20a22006-09-13 13:24:59 -040093 * transmit buffers are allocated from the KSEG0 segment. The
Linus Torvalds1da177e2005-04-16 15:20:36 -070094 * hardware registers, however, are still mapped at KSEG1 to
95 * make sure there's no out-of-order writes, and that all writes
96 * complete immediately.
97 */
98
99/* These addresses are only used if yamon doesn't tell us what
100 * the mac address is, and the mac address is not passed on the
101 * command line.
102 */
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400103static unsigned char au1000_mac_addr[6] __devinitdata = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104 0x00, 0x50, 0xc2, 0x0c, 0x30, 0x00
105};
106
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107struct au1000_private *au_macs[NUM_ETH_INTERFACES];
108
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200109/*
110 * board-specific configurations
111 *
112 * PHY detection algorithm
113 *
114 * If AU1XXX_PHY_STATIC_CONFIG is undefined, the PHY setup is
115 * autodetected:
116 *
117 * mii_probe() first searches the current MAC's MII bus for a PHY,
118 * selecting the first (or last, if AU1XXX_PHY_SEARCH_HIGHEST_ADDR is
119 * defined) PHY address not already claimed by another netdev.
120 *
121 * If nothing was found that way when searching for the 2nd ethernet
122 * controller's PHY and AU1XXX_PHY1_SEARCH_ON_MAC0 is defined, then
123 * the first MII bus is searched as well for an unclaimed PHY; this is
124 * needed in case of a dual-PHY accessible only through the MAC0's MII
125 * bus.
126 *
127 * Finally, if no PHY is found, then the corresponding ethernet
128 * controller is not registered to the network subsystem.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129 */
130
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200131/* autodetection defaults */
132#undef AU1XXX_PHY_SEARCH_HIGHEST_ADDR
133#define AU1XXX_PHY1_SEARCH_ON_MAC0
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200135/* static PHY setup
136 *
137 * most boards PHY setup should be detectable properly with the
138 * autodetection algorithm in mii_probe(), but in some cases (e.g. if
139 * you have a switch attached, or want to use the PHY's interrupt
140 * notification capabilities) you can provide a static PHY
141 * configuration here
142 *
143 * IRQs may only be set, if a PHY address was configured
144 * If a PHY address is given, also a bus id is required to be set
145 *
146 * ps: make sure the used irqs are configured properly in the board
147 * specific irq-map
148 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200150#if defined(CONFIG_MIPS_BOSPORUS)
151/*
152 * Micrel/Kendin 5 port switch attached to MAC0,
153 * MAC0 is associated with PHY address 5 (== WAN port)
154 * MAC1 is not associated with any PHY, since it's connected directly
155 * to the switch.
156 * no interrupts are used
157 */
158# define AU1XXX_PHY_STATIC_CONFIG
Linus Torvalds1da177e2005-04-16 15:20:36 -0700159
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200160# define AU1XXX_PHY0_ADDR 5
161# define AU1XXX_PHY0_BUSID 0
162# undef AU1XXX_PHY0_IRQ
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200164# undef AU1XXX_PHY1_ADDR
165# undef AU1XXX_PHY1_BUSID
166# undef AU1XXX_PHY1_IRQ
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167#endif
168
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200169#if defined(AU1XXX_PHY0_BUSID) && (AU1XXX_PHY0_BUSID > 0)
170# error MAC0-associated PHY attached 2nd MACs MII bus not supported yet
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171#endif
172
Florian Fainelli5ef30412009-01-22 14:06:25 -0800173static void enable_mac(struct net_device *dev, int force_reset)
174{
175 unsigned long flags;
176 struct au1000_private *aup = netdev_priv(dev);
177
178 spin_lock_irqsave(&aup->lock, flags);
179
180 if(force_reset || (!aup->mac_enabled)) {
181 *aup->enable = MAC_EN_CLOCK_ENABLE;
182 au_sync_delay(2);
183 *aup->enable = (MAC_EN_RESET0 | MAC_EN_RESET1 | MAC_EN_RESET2
184 | MAC_EN_CLOCK_ENABLE);
185 au_sync_delay(2);
186
187 aup->mac_enabled = 1;
188 }
189
190 spin_unlock_irqrestore(&aup->lock, flags);
191}
192
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200193/*
194 * MII operations
195 */
Adrian Bunk1210dde2008-10-12 21:02:19 -0700196static int au1000_mdio_read(struct net_device *dev, int phy_addr, int reg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197{
Wang Chen454d7c92008-11-12 23:37:49 -0800198 struct au1000_private *aup = netdev_priv(dev);
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200199 volatile u32 *const mii_control_reg = &aup->mac->mii_control;
200 volatile u32 *const mii_data_reg = &aup->mac->mii_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201 u32 timedout = 20;
202 u32 mii_control;
203
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204 while (*mii_control_reg & MAC_MII_BUSY) {
205 mdelay(1);
206 if (--timedout == 0) {
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400207 printk(KERN_ERR "%s: read_MII busy timeout!!\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208 dev->name);
209 return -1;
210 }
211 }
212
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400213 mii_control = MAC_SET_MII_SELECT_REG(reg) |
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200214 MAC_SET_MII_SELECT_PHY(phy_addr) | MAC_MII_READ;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700215
216 *mii_control_reg = mii_control;
217
218 timedout = 20;
219 while (*mii_control_reg & MAC_MII_BUSY) {
220 mdelay(1);
221 if (--timedout == 0) {
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400222 printk(KERN_ERR "%s: mdio_read busy timeout!!\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223 dev->name);
224 return -1;
225 }
226 }
227 return (int)*mii_data_reg;
228}
229
Adrian Bunk1210dde2008-10-12 21:02:19 -0700230static void au1000_mdio_write(struct net_device *dev, int phy_addr,
231 int reg, u16 value)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232{
Wang Chen454d7c92008-11-12 23:37:49 -0800233 struct au1000_private *aup = netdev_priv(dev);
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200234 volatile u32 *const mii_control_reg = &aup->mac->mii_control;
235 volatile u32 *const mii_data_reg = &aup->mac->mii_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236 u32 timedout = 20;
237 u32 mii_control;
238
Linus Torvalds1da177e2005-04-16 15:20:36 -0700239 while (*mii_control_reg & MAC_MII_BUSY) {
240 mdelay(1);
241 if (--timedout == 0) {
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400242 printk(KERN_ERR "%s: mdio_write busy timeout!!\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243 dev->name);
244 return;
245 }
246 }
247
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400248 mii_control = MAC_SET_MII_SELECT_REG(reg) |
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200249 MAC_SET_MII_SELECT_PHY(phy_addr) | MAC_MII_WRITE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250
251 *mii_data_reg = value;
252 *mii_control_reg = mii_control;
253}
254
Adrian Bunk1210dde2008-10-12 21:02:19 -0700255static int au1000_mdiobus_read(struct mii_bus *bus, int phy_addr, int regnum)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256{
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200257 /* WARNING: bus->phy_map[phy_addr].attached_dev == dev does
258 * _NOT_ hold (e.g. when PHY is accessed through other MAC's MII bus) */
259 struct net_device *const dev = bus->priv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700260
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200261 enable_mac(dev, 0); /* make sure the MAC associated with this
262 * mii_bus is enabled */
Adrian Bunk1210dde2008-10-12 21:02:19 -0700263 return au1000_mdio_read(dev, phy_addr, regnum);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264}
265
Adrian Bunk1210dde2008-10-12 21:02:19 -0700266static int au1000_mdiobus_write(struct mii_bus *bus, int phy_addr, int regnum,
267 u16 value)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268{
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200269 struct net_device *const dev = bus->priv;
270
271 enable_mac(dev, 0); /* make sure the MAC associated with this
272 * mii_bus is enabled */
Adrian Bunk1210dde2008-10-12 21:02:19 -0700273 au1000_mdio_write(dev, phy_addr, regnum, value);
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200274 return 0;
275}
276
Adrian Bunk1210dde2008-10-12 21:02:19 -0700277static int au1000_mdiobus_reset(struct mii_bus *bus)
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200278{
279 struct net_device *const dev = bus->priv;
280
281 enable_mac(dev, 0); /* make sure the MAC associated with this
282 * mii_bus is enabled */
283 return 0;
284}
285
Florian Fainelli5ef30412009-01-22 14:06:25 -0800286static void hard_stop(struct net_device *dev)
287{
288 struct au1000_private *aup = netdev_priv(dev);
289
290 if (au1000_debug > 4)
291 printk(KERN_INFO "%s: hard stop\n", dev->name);
292
293 aup->mac->control &= ~(MAC_RX_ENABLE | MAC_TX_ENABLE);
294 au_sync_delay(10);
295}
296
297static void enable_rx_tx(struct net_device *dev)
298{
299 struct au1000_private *aup = netdev_priv(dev);
300
301 if (au1000_debug > 4)
302 printk(KERN_INFO "%s: enable_rx_tx\n", dev->name);
303
304 aup->mac->control |= (MAC_RX_ENABLE | MAC_TX_ENABLE);
305 au_sync_delay(10);
306}
307
308static void
309au1000_adjust_link(struct net_device *dev)
310{
311 struct au1000_private *aup = netdev_priv(dev);
312 struct phy_device *phydev = aup->phy_dev;
313 unsigned long flags;
314
315 int status_change = 0;
316
317 BUG_ON(!aup->phy_dev);
318
319 spin_lock_irqsave(&aup->lock, flags);
320
321 if (phydev->link && (aup->old_speed != phydev->speed)) {
322 // speed changed
323
324 switch(phydev->speed) {
325 case SPEED_10:
326 case SPEED_100:
327 break;
328 default:
329 printk(KERN_WARNING
330 "%s: Speed (%d) is not 10/100 ???\n",
331 dev->name, phydev->speed);
332 break;
333 }
334
335 aup->old_speed = phydev->speed;
336
337 status_change = 1;
338 }
339
340 if (phydev->link && (aup->old_duplex != phydev->duplex)) {
341 // duplex mode changed
342
343 /* switching duplex mode requires to disable rx and tx! */
344 hard_stop(dev);
345
346 if (DUPLEX_FULL == phydev->duplex)
347 aup->mac->control = ((aup->mac->control
348 | MAC_FULL_DUPLEX)
349 & ~MAC_DISABLE_RX_OWN);
350 else
351 aup->mac->control = ((aup->mac->control
352 & ~MAC_FULL_DUPLEX)
353 | MAC_DISABLE_RX_OWN);
354 au_sync_delay(1);
355
356 enable_rx_tx(dev);
357 aup->old_duplex = phydev->duplex;
358
359 status_change = 1;
360 }
361
362 if(phydev->link != aup->old_link) {
363 // link state changed
364
365 if (!phydev->link) {
366 /* link went down */
367 aup->old_speed = 0;
368 aup->old_duplex = -1;
369 }
370
371 aup->old_link = phydev->link;
372 status_change = 1;
373 }
374
375 spin_unlock_irqrestore(&aup->lock, flags);
376
377 if (status_change) {
378 if (phydev->link)
379 printk(KERN_INFO "%s: link up (%d/%s)\n",
380 dev->name, phydev->speed,
381 DUPLEX_FULL == phydev->duplex ? "Full" : "Half");
382 else
383 printk(KERN_INFO "%s: link down\n", dev->name);
384 }
385}
386
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200387static int mii_probe (struct net_device *dev)
388{
Wang Chen454d7c92008-11-12 23:37:49 -0800389 struct au1000_private *const aup = netdev_priv(dev);
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200390 struct phy_device *phydev = NULL;
391
392#if defined(AU1XXX_PHY_STATIC_CONFIG)
393 BUG_ON(aup->mac_id < 0 || aup->mac_id > 1);
394
395 if(aup->mac_id == 0) { /* get PHY0 */
396# if defined(AU1XXX_PHY0_ADDR)
Lennert Buytenhek298cf9be2008-10-08 16:29:57 -0700397 phydev = au_macs[AU1XXX_PHY0_BUSID]->mii_bus->phy_map[AU1XXX_PHY0_ADDR];
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200398# else
399 printk (KERN_INFO DRV_NAME ":%s: using PHY-less setup\n",
400 dev->name);
401 return 0;
402# endif /* defined(AU1XXX_PHY0_ADDR) */
403 } else if (aup->mac_id == 1) { /* get PHY1 */
404# if defined(AU1XXX_PHY1_ADDR)
Lennert Buytenhek298cf9be2008-10-08 16:29:57 -0700405 phydev = au_macs[AU1XXX_PHY1_BUSID]->mii_bus->phy_map[AU1XXX_PHY1_ADDR];
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200406# else
407 printk (KERN_INFO DRV_NAME ":%s: using PHY-less setup\n",
408 dev->name);
409 return 0;
410# endif /* defined(AU1XXX_PHY1_ADDR) */
411 }
412
413#else /* defined(AU1XXX_PHY_STATIC_CONFIG) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414 int phy_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700415
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200416 /* find the first (lowest address) PHY on the current MAC's MII bus */
417 for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++)
Lennert Buytenhek298cf9be2008-10-08 16:29:57 -0700418 if (aup->mii_bus->phy_map[phy_addr]) {
419 phydev = aup->mii_bus->phy_map[phy_addr];
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200420# if !defined(AU1XXX_PHY_SEARCH_HIGHEST_ADDR)
421 break; /* break out with first one found */
422# endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700424
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200425# if defined(AU1XXX_PHY1_SEARCH_ON_MAC0)
426 /* try harder to find a PHY */
427 if (!phydev && (aup->mac_id == 1)) {
428 /* no PHY found, maybe we have a dual PHY? */
429 printk (KERN_INFO DRV_NAME ": no PHY found on MAC1, "
430 "let's see if it's attached to MAC0...\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200432 BUG_ON(!au_macs[0]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200434 /* find the first (lowest address) non-attached PHY on
435 * the MAC0 MII bus */
436 for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) {
437 struct phy_device *const tmp_phydev =
Lennert Buytenhek298cf9be2008-10-08 16:29:57 -0700438 au_macs[0]->mii_bus->phy_map[phy_addr];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200440 if (!tmp_phydev)
441 continue; /* no PHY here... */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700442
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200443 if (tmp_phydev->attached_dev)
444 continue; /* already claimed by MAC0 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200446 phydev = tmp_phydev;
447 break; /* found it */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448 }
449 }
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200450# endif /* defined(AU1XXX_PHY1_SEARCH_OTHER_BUS) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200452#endif /* defined(AU1XXX_PHY_STATIC_CONFIG) */
453 if (!phydev) {
454 printk (KERN_ERR DRV_NAME ":%s: no PHY found\n", dev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455 return -1;
456 }
457
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200458 /* now we are supposed to have a proper phydev, to attach to... */
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200459 BUG_ON(phydev->attached_dev);
460
Kay Sieversdb1d7bf2009-01-26 21:12:58 -0800461 phydev = phy_connect(dev, dev_name(&phydev->dev), &au1000_adjust_link,
462 0, PHY_INTERFACE_MODE_MII);
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200463
464 if (IS_ERR(phydev)) {
465 printk(KERN_ERR "%s: Could not attach to PHY\n", dev->name);
466 return PTR_ERR(phydev);
467 }
468
469 /* mask with MAC supported features */
470 phydev->supported &= (SUPPORTED_10baseT_Half
471 | SUPPORTED_10baseT_Full
472 | SUPPORTED_100baseT_Half
473 | SUPPORTED_100baseT_Full
474 | SUPPORTED_Autoneg
475 /* | SUPPORTED_Pause | SUPPORTED_Asym_Pause */
476 | SUPPORTED_MII
477 | SUPPORTED_TP);
478
479 phydev->advertising = phydev->supported;
480
481 aup->old_link = 0;
482 aup->old_speed = 0;
483 aup->old_duplex = -1;
484 aup->phy_dev = phydev;
485
486 printk(KERN_INFO "%s: attached PHY driver [%s] "
Kay Sieversdb1d7bf2009-01-26 21:12:58 -0800487 "(mii_bus:phy_addr=%s, irq=%d)\n", dev->name,
488 phydev->drv->name, dev_name(&phydev->dev), phydev->irq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700489
490 return 0;
491}
492
493
494/*
495 * Buffer allocation/deallocation routines. The buffer descriptor returned
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400496 * has the virtual and dma address of a buffer suitable for
Linus Torvalds1da177e2005-04-16 15:20:36 -0700497 * both, receive and transmit operations.
498 */
499static db_dest_t *GetFreeDB(struct au1000_private *aup)
500{
501 db_dest_t *pDB;
502 pDB = aup->pDBfree;
503
504 if (pDB) {
505 aup->pDBfree = pDB->pnext;
506 }
507 return pDB;
508}
509
510void ReleaseDB(struct au1000_private *aup, db_dest_t *pDB)
511{
512 db_dest_t *pDBfree = aup->pDBfree;
513 if (pDBfree)
514 pDBfree->pnext = pDB;
515 aup->pDBfree = pDB;
516}
517
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200518static void reset_mac_unlocked(struct net_device *dev)
519{
Wang Chen454d7c92008-11-12 23:37:49 -0800520 struct au1000_private *const aup = netdev_priv(dev);
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200521 int i;
522
523 hard_stop(dev);
524
525 *aup->enable = MAC_EN_CLOCK_ENABLE;
526 au_sync_delay(2);
527 *aup->enable = 0;
528 au_sync_delay(2);
529
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530 aup->tx_full = 0;
531 for (i = 0; i < NUM_RX_DMA; i++) {
532 /* reset control bits */
533 aup->rx_dma_ring[i]->buff_stat &= ~0xf;
534 }
535 for (i = 0; i < NUM_TX_DMA; i++) {
536 /* reset control bits */
537 aup->tx_dma_ring[i]->buff_stat &= ~0xf;
538 }
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200539
540 aup->mac_enabled = 0;
541
Linus Torvalds1da177e2005-04-16 15:20:36 -0700542}
543
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200544static void reset_mac(struct net_device *dev)
545{
Wang Chen454d7c92008-11-12 23:37:49 -0800546 struct au1000_private *const aup = netdev_priv(dev);
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200547 unsigned long flags;
548
549 if (au1000_debug > 4)
550 printk(KERN_INFO "%s: reset mac, aup %x\n",
551 dev->name, (unsigned)aup);
552
553 spin_lock_irqsave(&aup->lock, flags);
554
555 reset_mac_unlocked (dev);
556
557 spin_unlock_irqrestore(&aup->lock, flags);
558}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700559
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400560/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700561 * Setup the receive and transmit "rings". These pointers are the addresses
562 * of the rx and tx MAC DMA registers so they are fixed by the hardware --
563 * these are not descriptors sitting in memory.
564 */
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400565static void
Linus Torvalds1da177e2005-04-16 15:20:36 -0700566setup_hw_rings(struct au1000_private *aup, u32 rx_base, u32 tx_base)
567{
568 int i;
569
570 for (i = 0; i < NUM_RX_DMA; i++) {
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400571 aup->rx_dma_ring[i] =
Linus Torvalds1da177e2005-04-16 15:20:36 -0700572 (volatile rx_dma_t *) (rx_base + sizeof(rx_dma_t)*i);
573 }
574 for (i = 0; i < NUM_TX_DMA; i++) {
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400575 aup->tx_dma_ring[i] =
Linus Torvalds1da177e2005-04-16 15:20:36 -0700576 (volatile tx_dma_t *) (tx_base + sizeof(tx_dma_t)*i);
577 }
578}
579
580static struct {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700581 u32 base_addr;
582 u32 macen_addr;
583 int irq;
584 struct net_device *dev;
Sergei Shtylyov89be0502006-04-19 22:46:21 +0400585} iflist[2] = {
586#ifdef CONFIG_SOC_AU1000
587 {AU1000_ETH0_BASE, AU1000_MAC0_ENABLE, AU1000_MAC0_DMA_INT},
588 {AU1000_ETH1_BASE, AU1000_MAC1_ENABLE, AU1000_MAC1_DMA_INT}
589#endif
590#ifdef CONFIG_SOC_AU1100
591 {AU1100_ETH0_BASE, AU1100_MAC0_ENABLE, AU1100_MAC0_DMA_INT}
592#endif
593#ifdef CONFIG_SOC_AU1500
594 {AU1500_ETH0_BASE, AU1500_MAC0_ENABLE, AU1500_MAC0_DMA_INT},
595 {AU1500_ETH1_BASE, AU1500_MAC1_ENABLE, AU1500_MAC1_DMA_INT}
596#endif
597#ifdef CONFIG_SOC_AU1550
598 {AU1550_ETH0_BASE, AU1550_MAC0_ENABLE, AU1550_MAC0_DMA_INT},
599 {AU1550_ETH1_BASE, AU1550_MAC1_ENABLE, AU1550_MAC1_DMA_INT}
600#endif
601};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700602
603static int num_ifs;
604
605/*
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200606 * ethtool operations
607 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700608
609static int au1000_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
610{
Wang Chen454d7c92008-11-12 23:37:49 -0800611 struct au1000_private *aup = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700612
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200613 if (aup->phy_dev)
614 return phy_ethtool_gset(aup->phy_dev, cmd);
615
616 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700617}
618
619static int au1000_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
620{
Wang Chen454d7c92008-11-12 23:37:49 -0800621 struct au1000_private *aup = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700622
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200623 if (!capable(CAP_NET_ADMIN))
624 return -EPERM;
625
626 if (aup->phy_dev)
627 return phy_ethtool_sset(aup->phy_dev, cmd);
628
629 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700630}
631
632static void
633au1000_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
634{
Wang Chen454d7c92008-11-12 23:37:49 -0800635 struct au1000_private *aup = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700636
637 strcpy(info->driver, DRV_NAME);
638 strcpy(info->version, DRV_VERSION);
639 info->fw_version[0] = '\0';
640 sprintf(info->bus_info, "%s %d", DRV_NAME, aup->mac_id);
641 info->regdump_len = 0;
642}
643
Jeff Garzik7282d492006-09-13 14:30:00 -0400644static const struct ethtool_ops au1000_ethtool_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700645 .get_settings = au1000_get_settings,
646 .set_settings = au1000_set_settings,
647 .get_drvinfo = au1000_get_drvinfo,
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200648 .get_link = ethtool_op_get_link,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700649};
650
Florian Fainelli5ef30412009-01-22 14:06:25 -0800651
652/*
653 * Initialize the interface.
654 *
655 * When the device powers up, the clocks are disabled and the
656 * mac is in reset state. When the interface is closed, we
657 * do the same -- reset the device and disable the clocks to
658 * conserve power. Thus, whenever au1000_init() is called,
659 * the device should already be in reset state.
660 */
661static int au1000_init(struct net_device *dev)
662{
663 struct au1000_private *aup = netdev_priv(dev);
664 unsigned long flags;
665 int i;
666 u32 control;
667
668 if (au1000_debug > 4)
669 printk("%s: au1000_init\n", dev->name);
670
671 /* bring the device out of reset */
672 enable_mac(dev, 1);
673
674 spin_lock_irqsave(&aup->lock, flags);
675
676 aup->mac->control = 0;
677 aup->tx_head = (aup->tx_dma_ring[0]->buff_stat & 0xC) >> 2;
678 aup->tx_tail = aup->tx_head;
679 aup->rx_head = (aup->rx_dma_ring[0]->buff_stat & 0xC) >> 2;
680
681 aup->mac->mac_addr_high = dev->dev_addr[5]<<8 | dev->dev_addr[4];
682 aup->mac->mac_addr_low = dev->dev_addr[3]<<24 | dev->dev_addr[2]<<16 |
683 dev->dev_addr[1]<<8 | dev->dev_addr[0];
684
685 for (i = 0; i < NUM_RX_DMA; i++) {
686 aup->rx_dma_ring[i]->buff_stat |= RX_DMA_ENABLE;
687 }
688 au_sync();
689
690 control = MAC_RX_ENABLE | MAC_TX_ENABLE;
691#ifndef CONFIG_CPU_LITTLE_ENDIAN
692 control |= MAC_BIG_ENDIAN;
693#endif
694 if (aup->phy_dev) {
695 if (aup->phy_dev->link && (DUPLEX_FULL == aup->phy_dev->duplex))
696 control |= MAC_FULL_DUPLEX;
697 else
698 control |= MAC_DISABLE_RX_OWN;
699 } else { /* PHY-less op, assume full-duplex */
700 control |= MAC_FULL_DUPLEX;
701 }
702
703 aup->mac->control = control;
704 aup->mac->vlan1_tag = 0x8100; /* activate vlan support */
705 au_sync();
706
707 spin_unlock_irqrestore(&aup->lock, flags);
708 return 0;
709}
710
711static inline void update_rx_stats(struct net_device *dev, u32 status)
712{
713 struct au1000_private *aup = netdev_priv(dev);
714 struct net_device_stats *ps = &dev->stats;
715
716 ps->rx_packets++;
717 if (status & RX_MCAST_FRAME)
718 ps->multicast++;
719
720 if (status & RX_ERROR) {
721 ps->rx_errors++;
722 if (status & RX_MISSED_FRAME)
723 ps->rx_missed_errors++;
724 if (status & (RX_OVERLEN | RX_OVERLEN | RX_LEN_ERROR))
725 ps->rx_length_errors++;
726 if (status & RX_CRC_ERROR)
727 ps->rx_crc_errors++;
728 if (status & RX_COLL)
729 ps->collisions++;
730 }
731 else
732 ps->rx_bytes += status & RX_FRAME_LEN_MASK;
733
734}
735
736/*
737 * Au1000 receive routine.
738 */
739static int au1000_rx(struct net_device *dev)
740{
741 struct au1000_private *aup = netdev_priv(dev);
742 struct sk_buff *skb;
743 volatile rx_dma_t *prxd;
744 u32 buff_stat, status;
745 db_dest_t *pDB;
746 u32 frmlen;
747
748 if (au1000_debug > 5)
749 printk("%s: au1000_rx head %d\n", dev->name, aup->rx_head);
750
751 prxd = aup->rx_dma_ring[aup->rx_head];
752 buff_stat = prxd->buff_stat;
753 while (buff_stat & RX_T_DONE) {
754 status = prxd->status;
755 pDB = aup->rx_db_inuse[aup->rx_head];
756 update_rx_stats(dev, status);
757 if (!(status & RX_ERROR)) {
758
759 /* good frame */
760 frmlen = (status & RX_FRAME_LEN_MASK);
761 frmlen -= 4; /* Remove FCS */
762 skb = dev_alloc_skb(frmlen + 2);
763 if (skb == NULL) {
764 printk(KERN_ERR
765 "%s: Memory squeeze, dropping packet.\n",
766 dev->name);
767 dev->stats.rx_dropped++;
768 continue;
769 }
770 skb_reserve(skb, 2); /* 16 byte IP header align */
771 skb_copy_to_linear_data(skb,
772 (unsigned char *)pDB->vaddr, frmlen);
773 skb_put(skb, frmlen);
774 skb->protocol = eth_type_trans(skb, dev);
775 netif_rx(skb); /* pass the packet to upper layers */
776 }
777 else {
778 if (au1000_debug > 4) {
779 if (status & RX_MISSED_FRAME)
780 printk("rx miss\n");
781 if (status & RX_WDOG_TIMER)
782 printk("rx wdog\n");
783 if (status & RX_RUNT)
784 printk("rx runt\n");
785 if (status & RX_OVERLEN)
786 printk("rx overlen\n");
787 if (status & RX_COLL)
788 printk("rx coll\n");
789 if (status & RX_MII_ERROR)
790 printk("rx mii error\n");
791 if (status & RX_CRC_ERROR)
792 printk("rx crc error\n");
793 if (status & RX_LEN_ERROR)
794 printk("rx len error\n");
795 if (status & RX_U_CNTRL_FRAME)
796 printk("rx u control frame\n");
797 if (status & RX_MISSED_FRAME)
798 printk("rx miss\n");
799 }
800 }
801 prxd->buff_stat = (u32)(pDB->dma_addr | RX_DMA_ENABLE);
802 aup->rx_head = (aup->rx_head + 1) & (NUM_RX_DMA - 1);
803 au_sync();
804
805 /* next descriptor */
806 prxd = aup->rx_dma_ring[aup->rx_head];
807 buff_stat = prxd->buff_stat;
808 }
809 return 0;
810}
811
812static void update_tx_stats(struct net_device *dev, u32 status)
813{
814 struct au1000_private *aup = netdev_priv(dev);
815 struct net_device_stats *ps = &dev->stats;
816
817 if (status & TX_FRAME_ABORTED) {
818 if (!aup->phy_dev || (DUPLEX_FULL == aup->phy_dev->duplex)) {
819 if (status & (TX_JAB_TIMEOUT | TX_UNDERRUN)) {
820 /* any other tx errors are only valid
821 * in half duplex mode */
822 ps->tx_errors++;
823 ps->tx_aborted_errors++;
824 }
825 }
826 else {
827 ps->tx_errors++;
828 ps->tx_aborted_errors++;
829 if (status & (TX_NO_CARRIER | TX_LOSS_CARRIER))
830 ps->tx_carrier_errors++;
831 }
832 }
833}
834
835/*
836 * Called from the interrupt service routine to acknowledge
837 * the TX DONE bits. This is a must if the irq is setup as
838 * edge triggered.
839 */
840static void au1000_tx_ack(struct net_device *dev)
841{
842 struct au1000_private *aup = netdev_priv(dev);
843 volatile tx_dma_t *ptxd;
844
845 ptxd = aup->tx_dma_ring[aup->tx_tail];
846
847 while (ptxd->buff_stat & TX_T_DONE) {
848 update_tx_stats(dev, ptxd->status);
849 ptxd->buff_stat &= ~TX_T_DONE;
850 ptxd->len = 0;
851 au_sync();
852
853 aup->tx_tail = (aup->tx_tail + 1) & (NUM_TX_DMA - 1);
854 ptxd = aup->tx_dma_ring[aup->tx_tail];
855
856 if (aup->tx_full) {
857 aup->tx_full = 0;
858 netif_wake_queue(dev);
859 }
860 }
861}
862
863/*
864 * Au1000 interrupt service routine.
865 */
866static irqreturn_t au1000_interrupt(int irq, void *dev_id)
867{
868 struct net_device *dev = dev_id;
869
870 /* Handle RX interrupts first to minimize chance of overrun */
871
872 au1000_rx(dev);
873 au1000_tx_ack(dev);
874 return IRQ_RETVAL(1);
875}
876
877static int au1000_open(struct net_device *dev)
878{
879 int retval;
880 struct au1000_private *aup = netdev_priv(dev);
881
882 if (au1000_debug > 4)
883 printk("%s: open: dev=%p\n", dev->name, dev);
884
885 if ((retval = request_irq(dev->irq, &au1000_interrupt, 0,
886 dev->name, dev))) {
887 printk(KERN_ERR "%s: unable to get IRQ %d\n",
888 dev->name, dev->irq);
889 return retval;
890 }
891
892 if ((retval = au1000_init(dev))) {
893 printk(KERN_ERR "%s: error in au1000_init\n", dev->name);
894 free_irq(dev->irq, dev);
895 return retval;
896 }
897
898 if (aup->phy_dev) {
899 /* cause the PHY state machine to schedule a link state check */
900 aup->phy_dev->state = PHY_CHANGELINK;
901 phy_start(aup->phy_dev);
902 }
903
904 netif_start_queue(dev);
905
906 if (au1000_debug > 4)
907 printk("%s: open: Initialization done.\n", dev->name);
908
909 return 0;
910}
911
912static int au1000_close(struct net_device *dev)
913{
914 unsigned long flags;
915 struct au1000_private *const aup = netdev_priv(dev);
916
917 if (au1000_debug > 4)
918 printk("%s: close: dev=%p\n", dev->name, dev);
919
920 if (aup->phy_dev)
921 phy_stop(aup->phy_dev);
922
923 spin_lock_irqsave(&aup->lock, flags);
924
925 reset_mac_unlocked (dev);
926
927 /* stop the device */
928 netif_stop_queue(dev);
929
930 /* disable the interrupt */
931 free_irq(dev->irq, dev);
932 spin_unlock_irqrestore(&aup->lock, flags);
933
934 return 0;
935}
936
937/*
938 * Au1000 transmit routine.
939 */
940static int au1000_tx(struct sk_buff *skb, struct net_device *dev)
941{
942 struct au1000_private *aup = netdev_priv(dev);
943 struct net_device_stats *ps = &dev->stats;
944 volatile tx_dma_t *ptxd;
945 u32 buff_stat;
946 db_dest_t *pDB;
947 int i;
948
949 if (au1000_debug > 5)
950 printk("%s: tx: aup %x len=%d, data=%p, head %d\n",
951 dev->name, (unsigned)aup, skb->len,
952 skb->data, aup->tx_head);
953
954 ptxd = aup->tx_dma_ring[aup->tx_head];
955 buff_stat = ptxd->buff_stat;
956 if (buff_stat & TX_DMA_ENABLE) {
957 /* We've wrapped around and the transmitter is still busy */
958 netif_stop_queue(dev);
959 aup->tx_full = 1;
960 return 1;
961 }
962 else if (buff_stat & TX_T_DONE) {
963 update_tx_stats(dev, ptxd->status);
964 ptxd->len = 0;
965 }
966
967 if (aup->tx_full) {
968 aup->tx_full = 0;
969 netif_wake_queue(dev);
970 }
971
972 pDB = aup->tx_db_inuse[aup->tx_head];
973 skb_copy_from_linear_data(skb, pDB->vaddr, skb->len);
974 if (skb->len < ETH_ZLEN) {
975 for (i=skb->len; i<ETH_ZLEN; i++) {
976 ((char *)pDB->vaddr)[i] = 0;
977 }
978 ptxd->len = ETH_ZLEN;
979 }
980 else
981 ptxd->len = skb->len;
982
983 ps->tx_packets++;
984 ps->tx_bytes += ptxd->len;
985
986 ptxd->buff_stat = pDB->dma_addr | TX_DMA_ENABLE;
987 au_sync();
988 dev_kfree_skb(skb);
989 aup->tx_head = (aup->tx_head + 1) & (NUM_TX_DMA - 1);
990 dev->trans_start = jiffies;
991 return 0;
992}
993
994/*
995 * The Tx ring has been full longer than the watchdog timeout
996 * value. The transmitter must be hung?
997 */
998static void au1000_tx_timeout(struct net_device *dev)
999{
1000 printk(KERN_ERR "%s: au1000_tx_timeout: dev=%p\n", dev->name, dev);
1001 reset_mac(dev);
1002 au1000_init(dev);
1003 dev->trans_start = jiffies;
1004 netif_wake_queue(dev);
1005}
1006
Alexander Beregalovd9a92ce2009-04-14 18:30:23 +00001007static void au1000_multicast_list(struct net_device *dev)
Florian Fainelli5ef30412009-01-22 14:06:25 -08001008{
1009 struct au1000_private *aup = netdev_priv(dev);
1010
1011 if (au1000_debug > 4)
Alexander Beregalovd9a92ce2009-04-14 18:30:23 +00001012 printk("%s: au1000_multicast_list: flags=%x\n", dev->name, dev->flags);
Florian Fainelli5ef30412009-01-22 14:06:25 -08001013
1014 if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
1015 aup->mac->control |= MAC_PROMISCUOUS;
1016 } else if ((dev->flags & IFF_ALLMULTI) ||
1017 dev->mc_count > MULTICAST_FILTER_LIMIT) {
1018 aup->mac->control |= MAC_PASS_ALL_MULTI;
1019 aup->mac->control &= ~MAC_PROMISCUOUS;
1020 printk(KERN_INFO "%s: Pass all multicast\n", dev->name);
1021 } else {
1022 int i;
1023 struct dev_mc_list *mclist;
1024 u32 mc_filter[2]; /* Multicast hash filter */
1025
1026 mc_filter[1] = mc_filter[0] = 0;
1027 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
1028 i++, mclist = mclist->next) {
1029 set_bit(ether_crc(ETH_ALEN, mclist->dmi_addr)>>26,
1030 (long *)mc_filter);
1031 }
1032 aup->mac->multi_hash_high = mc_filter[1];
1033 aup->mac->multi_hash_low = mc_filter[0];
1034 aup->mac->control &= ~MAC_PROMISCUOUS;
1035 aup->mac->control |= MAC_HASH_MODE;
1036 }
1037}
1038
1039static int au1000_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1040{
1041 struct au1000_private *aup = netdev_priv(dev);
1042
1043 if (!netif_running(dev)) return -EINVAL;
1044
1045 if (!aup->phy_dev) return -EINVAL; // PHY not controllable
1046
1047 return phy_mii_ioctl(aup->phy_dev, if_mii(rq), cmd);
1048}
1049
Alexander Beregalovd9a92ce2009-04-14 18:30:23 +00001050static const struct net_device_ops au1000_netdev_ops = {
1051 .ndo_open = au1000_open,
1052 .ndo_stop = au1000_close,
1053 .ndo_start_xmit = au1000_tx,
1054 .ndo_set_multicast_list = au1000_multicast_list,
1055 .ndo_do_ioctl = au1000_ioctl,
1056 .ndo_tx_timeout = au1000_tx_timeout,
1057 .ndo_set_mac_address = eth_mac_addr,
1058 .ndo_validate_addr = eth_validate_addr,
1059 .ndo_change_mtu = eth_change_mtu,
1060};
1061
Sergei Shtylyov89be0502006-04-19 22:46:21 +04001062static struct net_device * au1000_probe(int port_num)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001063{
1064 static unsigned version_printed = 0;
1065 struct au1000_private *aup = NULL;
1066 struct net_device *dev = NULL;
1067 db_dest_t *pDB, *pDBfree;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001068 char ethaddr[6];
Sergei Shtylyov89be0502006-04-19 22:46:21 +04001069 int irq, i, err;
1070 u32 base, macen;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001071
Sergei Shtylyov89be0502006-04-19 22:46:21 +04001072 if (port_num >= NUM_ETH_INTERFACES)
Florian Fainelli5ef30412009-01-22 14:06:25 -08001073 return NULL;
Sergei Shtylyov89be0502006-04-19 22:46:21 +04001074
1075 base = CPHYSADDR(iflist[port_num].base_addr );
1076 macen = CPHYSADDR(iflist[port_num].macen_addr);
1077 irq = iflist[port_num].irq;
1078
1079 if (!request_mem_region( base, MAC_IOSIZE, "Au1x00 ENET") ||
1080 !request_mem_region(macen, 4, "Au1x00 ENET"))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001081 return NULL;
1082
Sergei Shtylyov89be0502006-04-19 22:46:21 +04001083 if (version_printed++ == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001084 printk("%s version %s %s\n", DRV_NAME, DRV_VERSION, DRV_AUTHOR);
1085
1086 dev = alloc_etherdev(sizeof(struct au1000_private));
1087 if (!dev) {
Sergei Shtylyov89be0502006-04-19 22:46:21 +04001088 printk(KERN_ERR "%s: alloc_etherdev failed\n", DRV_NAME);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001089 return NULL;
1090 }
1091
Sergei Shtylyov89be0502006-04-19 22:46:21 +04001092 if ((err = register_netdev(dev)) != 0) {
1093 printk(KERN_ERR "%s: Cannot register net device, error %d\n",
1094 DRV_NAME, err);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001095 free_netdev(dev);
1096 return NULL;
1097 }
1098
Sergei Shtylyov89be0502006-04-19 22:46:21 +04001099 printk("%s: Au1xx0 Ethernet found at 0x%x, irq %d\n",
1100 dev->name, base, irq);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001101
Wang Chen454d7c92008-11-12 23:37:49 -08001102 aup = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001103
Martin Gebert533763d2008-07-23 09:40:09 +02001104 spin_lock_init(&aup->lock);
1105
Linus Torvalds1da177e2005-04-16 15:20:36 -07001106 /* Allocate the data buffers */
1107 /* Snooping works fine with eth on all au1xxx */
Sergei Shtylyov89be0502006-04-19 22:46:21 +04001108 aup->vaddr = (u32)dma_alloc_noncoherent(NULL, MAX_BUF_SIZE *
1109 (NUM_TX_BUFFS + NUM_RX_BUFFS),
1110 &aup->dma_addr, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001111 if (!aup->vaddr) {
1112 free_netdev(dev);
Sergei Shtylyov89be0502006-04-19 22:46:21 +04001113 release_mem_region( base, MAC_IOSIZE);
1114 release_mem_region(macen, 4);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001115 return NULL;
1116 }
1117
1118 /* aup->mac is the base address of the MAC's registers */
Sergei Shtylyov89be0502006-04-19 22:46:21 +04001119 aup->mac = (volatile mac_reg_t *)iflist[port_num].base_addr;
1120
Linus Torvalds1da177e2005-04-16 15:20:36 -07001121 /* Setup some variables for quick register address access */
Sergei Shtylyov89be0502006-04-19 22:46:21 +04001122 aup->enable = (volatile u32 *)iflist[port_num].macen_addr;
1123 aup->mac_id = port_num;
1124 au_macs[port_num] = aup;
1125
1126 if (port_num == 0) {
Yoichi Yuasa2de88922007-10-15 19:06:20 +09001127 if (prom_get_ethernet_addr(ethaddr) == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001128 memcpy(au1000_mac_addr, ethaddr, sizeof(au1000_mac_addr));
Sergei Shtylyov89be0502006-04-19 22:46:21 +04001129 else {
Yoichi Yuasa2de88922007-10-15 19:06:20 +09001130 printk(KERN_INFO "%s: No MAC address found\n",
1131 dev->name);
Sergei Shtylyov89be0502006-04-19 22:46:21 +04001132 /* Use the hard coded MAC addresses */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001133 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001134
Sergei Shtylyov89be0502006-04-19 22:46:21 +04001135 setup_hw_rings(aup, MAC0_RX_DMA_ADDR, MAC0_TX_DMA_ADDR);
1136 } else if (port_num == 1)
1137 setup_hw_rings(aup, MAC1_RX_DMA_ADDR, MAC1_TX_DMA_ADDR);
1138
1139 /*
1140 * Assign to the Ethernet ports two consecutive MAC addresses
1141 * to match those that are printed on their stickers
1142 */
1143 memcpy(dev->dev_addr, au1000_mac_addr, sizeof(au1000_mac_addr));
1144 dev->dev_addr[5] += port_num;
1145
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +02001146 *aup->enable = 0;
1147 aup->mac_enabled = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001148
Lennert Buytenhek298cf9be2008-10-08 16:29:57 -07001149 aup->mii_bus = mdiobus_alloc();
1150 if (aup->mii_bus == NULL)
1151 goto err_out;
1152
1153 aup->mii_bus->priv = dev;
Adrian Bunk1210dde2008-10-12 21:02:19 -07001154 aup->mii_bus->read = au1000_mdiobus_read;
1155 aup->mii_bus->write = au1000_mdiobus_write;
1156 aup->mii_bus->reset = au1000_mdiobus_reset;
Lennert Buytenhek298cf9be2008-10-08 16:29:57 -07001157 aup->mii_bus->name = "au1000_eth_mii";
1158 snprintf(aup->mii_bus->id, MII_BUS_ID_SIZE, "%x", aup->mac_id);
1159 aup->mii_bus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL);
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +02001160 for(i = 0; i < PHY_MAX_ADDR; ++i)
Lennert Buytenhek298cf9be2008-10-08 16:29:57 -07001161 aup->mii_bus->irq[i] = PHY_POLL;
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +02001162
1163 /* if known, set corresponding PHY IRQs */
1164#if defined(AU1XXX_PHY_STATIC_CONFIG)
1165# if defined(AU1XXX_PHY0_IRQ)
Andy Fleming9d9326d2008-04-09 19:38:13 -05001166 if (AU1XXX_PHY0_BUSID == aup->mac_id)
Lennert Buytenhek298cf9be2008-10-08 16:29:57 -07001167 aup->mii_bus->irq[AU1XXX_PHY0_ADDR] = AU1XXX_PHY0_IRQ;
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +02001168# endif
1169# if defined(AU1XXX_PHY1_IRQ)
Andy Fleming9d9326d2008-04-09 19:38:13 -05001170 if (AU1XXX_PHY1_BUSID == aup->mac_id)
Lennert Buytenhek298cf9be2008-10-08 16:29:57 -07001171 aup->mii_bus->irq[AU1XXX_PHY1_ADDR] = AU1XXX_PHY1_IRQ;
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +02001172# endif
1173#endif
Lennert Buytenhek298cf9be2008-10-08 16:29:57 -07001174 mdiobus_register(aup->mii_bus);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001175
1176 if (mii_probe(dev) != 0) {
1177 goto err_out;
1178 }
1179
1180 pDBfree = NULL;
1181 /* setup the data buffer descriptors and attach a buffer to each one */
1182 pDB = aup->db;
1183 for (i = 0; i < (NUM_TX_BUFFS+NUM_RX_BUFFS); i++) {
1184 pDB->pnext = pDBfree;
1185 pDBfree = pDB;
1186 pDB->vaddr = (u32 *)((unsigned)aup->vaddr + MAX_BUF_SIZE*i);
1187 pDB->dma_addr = (dma_addr_t)virt_to_bus(pDB->vaddr);
1188 pDB++;
1189 }
1190 aup->pDBfree = pDBfree;
1191
1192 for (i = 0; i < NUM_RX_DMA; i++) {
1193 pDB = GetFreeDB(aup);
1194 if (!pDB) {
1195 goto err_out;
1196 }
1197 aup->rx_dma_ring[i]->buff_stat = (unsigned)pDB->dma_addr;
1198 aup->rx_db_inuse[i] = pDB;
1199 }
1200 for (i = 0; i < NUM_TX_DMA; i++) {
1201 pDB = GetFreeDB(aup);
1202 if (!pDB) {
1203 goto err_out;
1204 }
1205 aup->tx_dma_ring[i]->buff_stat = (unsigned)pDB->dma_addr;
1206 aup->tx_dma_ring[i]->len = 0;
1207 aup->tx_db_inuse[i] = pDB;
1208 }
1209
Sergei Shtylyov89be0502006-04-19 22:46:21 +04001210 dev->base_addr = base;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001211 dev->irq = irq;
Alexander Beregalovd9a92ce2009-04-14 18:30:23 +00001212 dev->netdev_ops = &au1000_netdev_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001213 SET_ETHTOOL_OPS(dev, &au1000_ethtool_ops);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001214 dev->watchdog_timeo = ETH_TX_TIMEOUT;
1215
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001216 /*
1217 * The boot code uses the ethernet controller, so reset it to start
Linus Torvalds1da177e2005-04-16 15:20:36 -07001218 * fresh. au1000_init() expects that the device is in reset state.
1219 */
1220 reset_mac(dev);
1221
1222 return dev;
1223
1224err_out:
Lennert Buytenhek298cf9be2008-10-08 16:29:57 -07001225 if (aup->mii_bus != NULL) {
1226 mdiobus_unregister(aup->mii_bus);
1227 mdiobus_free(aup->mii_bus);
1228 }
1229
Linus Torvalds1da177e2005-04-16 15:20:36 -07001230 /* here we should have a valid dev plus aup-> register addresses
1231 * so we can reset the mac properly.*/
1232 reset_mac(dev);
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +02001233
Linus Torvalds1da177e2005-04-16 15:20:36 -07001234 for (i = 0; i < NUM_RX_DMA; i++) {
1235 if (aup->rx_db_inuse[i])
1236 ReleaseDB(aup, aup->rx_db_inuse[i]);
1237 }
1238 for (i = 0; i < NUM_TX_DMA; i++) {
1239 if (aup->tx_db_inuse[i])
1240 ReleaseDB(aup, aup->tx_db_inuse[i]);
1241 }
Sergei Shtylyov89be0502006-04-19 22:46:21 +04001242 dma_free_noncoherent(NULL, MAX_BUF_SIZE * (NUM_TX_BUFFS + NUM_RX_BUFFS),
1243 (void *)aup->vaddr, aup->dma_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001244 unregister_netdev(dev);
1245 free_netdev(dev);
Sergei Shtylyov89be0502006-04-19 22:46:21 +04001246 release_mem_region( base, MAC_IOSIZE);
1247 release_mem_region(macen, 4);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001248 return NULL;
1249}
1250
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001251/*
Florian Fainelli5ef30412009-01-22 14:06:25 -08001252 * Setup the base address and interrupt of the Au1xxx ethernet macs
1253 * based on cpu type and whether the interface is enabled in sys_pinfunc
1254 * register. The last interface is enabled if SYS_PF_NI2 (bit 4) is 0.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001255 */
Florian Fainelli5ef30412009-01-22 14:06:25 -08001256static int __init au1000_init_module(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001257{
Florian Fainelli5ef30412009-01-22 14:06:25 -08001258 int ni = (int)((au_readl(SYS_PINFUNC) & (u32)(SYS_PF_NI2)) >> 4);
1259 struct net_device *dev;
1260 int i, found_one = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001261
Florian Fainelli5ef30412009-01-22 14:06:25 -08001262 num_ifs = NUM_ETH_INTERFACES - ni;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001263
Florian Fainelli5ef30412009-01-22 14:06:25 -08001264 for(i = 0; i < num_ifs; i++) {
1265 dev = au1000_probe(i);
1266 iflist[i].dev = dev;
1267 if (dev)
1268 found_one++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001269 }
Florian Fainelli5ef30412009-01-22 14:06:25 -08001270 if (!found_one)
1271 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001272 return 0;
1273}
1274
1275static void __exit au1000_cleanup_module(void)
1276{
1277 int i, j;
1278 struct net_device *dev;
1279 struct au1000_private *aup;
1280
1281 for (i = 0; i < num_ifs; i++) {
1282 dev = iflist[i].dev;
1283 if (dev) {
Wang Chen454d7c92008-11-12 23:37:49 -08001284 aup = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001285 unregister_netdev(dev);
Lennert Buytenhek298cf9be2008-10-08 16:29:57 -07001286 mdiobus_unregister(aup->mii_bus);
1287 mdiobus_free(aup->mii_bus);
Sergei Shtylyov89be0502006-04-19 22:46:21 +04001288 for (j = 0; j < NUM_RX_DMA; j++)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001289 if (aup->rx_db_inuse[j])
1290 ReleaseDB(aup, aup->rx_db_inuse[j]);
Sergei Shtylyov89be0502006-04-19 22:46:21 +04001291 for (j = 0; j < NUM_TX_DMA; j++)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001292 if (aup->tx_db_inuse[j])
1293 ReleaseDB(aup, aup->tx_db_inuse[j]);
Florian Fainelli5ef30412009-01-22 14:06:25 -08001294 dma_free_noncoherent(NULL, MAX_BUF_SIZE *
1295 (NUM_TX_BUFFS + NUM_RX_BUFFS),
1296 (void *)aup->vaddr, aup->dma_addr);
1297 release_mem_region(dev->base_addr, MAC_IOSIZE);
1298 release_mem_region(CPHYSADDR(iflist[i].macen_addr), 4);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001299 free_netdev(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001300 }
1301 }
1302}
1303
Linus Torvalds1da177e2005-04-16 15:20:36 -07001304module_init(au1000_init_module);
1305module_exit(au1000_cleanup_module);