blob: 10cf0cbc218507111b26959f119645672fcd5666 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * smc91x.c
3 * This is a driver for SMSC's 91C9x/91C1xx single-chip Ethernet devices.
4 *
5 * Copyright (C) 1996 by Erik Stahlman
6 * Copyright (C) 2001 Standard Microsystems Corporation
7 * Developed by Simple Network Magic Corporation
8 * Copyright (C) 2003 Monta Vista Software, Inc.
9 * Unified SMC91x driver by Nicolas Pitre
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 *
25 * Arguments:
26 * io = for the base address
27 * irq = for the IRQ
28 * nowait = 0 for normal wait states, 1 eliminates additional wait states
29 *
30 * original author:
31 * Erik Stahlman <erik@vt.edu>
32 *
33 * hardware multicast code:
34 * Peter Cammaert <pc@denkart.be>
35 *
36 * contributors:
37 * Daris A Nevil <dnevil@snmc.com>
Nicolas Pitre2f82af02009-09-14 03:25:28 -040038 * Nicolas Pitre <nico@fluxnic.net>
Linus Torvalds1da177e2005-04-16 15:20:36 -070039 * Russell King <rmk@arm.linux.org.uk>
40 *
41 * History:
42 * 08/20/00 Arnaldo Melo fix kfree(skb) in smc_hardware_send_packet
43 * 12/15/00 Christian Jullien fix "Warning: kfree_skb on hard IRQ"
44 * 03/16/01 Daris A Nevil modified smc9194.c for use with LAN91C111
45 * 08/22/01 Scott Anderson merge changes from smc9194 to smc91111
46 * 08/21/01 Pramod B Bhardwaj added support for RevB of LAN91C111
47 * 12/20/01 Jeff Sutherland initial port to Xscale PXA with DMA support
48 * 04/07/03 Nicolas Pitre unified SMC91x driver, killed irq races,
49 * more bus abstraction, big cleanup, etc.
50 * 29/09/03 Russell King - add driver model support
51 * - ethtool support
52 * - convert to use generic MII interface
53 * - add link up/down notification
54 * - don't try to handle full negotiation in
55 * smc_phy_configure
56 * - clean up (and fix stack overrun) in PHY
57 * MII read/write functions
58 * 22/09/04 Nicolas Pitre big update (see commit log for details)
59 */
60static const char version[] =
Nicolas Pitre2f82af02009-09-14 03:25:28 -040061 "smc91x.c: v1.1, sep 22 2004 by Nicolas Pitre <nico@fluxnic.net>\n";
Linus Torvalds1da177e2005-04-16 15:20:36 -070062
63/* Debugging level */
64#ifndef SMC_DEBUG
65#define SMC_DEBUG 0
66#endif
67
68
Linus Torvalds1da177e2005-04-16 15:20:36 -070069#include <linux/init.h>
70#include <linux/module.h>
71#include <linux/kernel.h>
72#include <linux/sched.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070073#include <linux/delay.h>
74#include <linux/interrupt.h>
75#include <linux/errno.h>
76#include <linux/ioport.h>
77#include <linux/crc32.h>
Russell Kingd052d1b2005-10-29 19:07:23 +010078#include <linux/platform_device.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070079#include <linux/spinlock.h>
80#include <linux/ethtool.h>
81#include <linux/mii.h>
82#include <linux/workqueue.h>
83
84#include <linux/netdevice.h>
85#include <linux/etherdevice.h>
86#include <linux/skbuff.h>
87
88#include <asm/io.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070089
90#include "smc91x.h"
91
Linus Torvalds1da177e2005-04-16 15:20:36 -070092#ifndef SMC_NOWAIT
93# define SMC_NOWAIT 0
94#endif
95static int nowait = SMC_NOWAIT;
96module_param(nowait, int, 0400);
97MODULE_PARM_DESC(nowait, "set to 1 for no wait state");
98
99/*
100 * Transmit timeout, default 5 seconds.
101 */
Nicolas Pitreea937562005-04-12 16:26:40 -0400102static int watchdog = 1000;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103module_param(watchdog, int, 0400);
104MODULE_PARM_DESC(watchdog, "transmit timeout in milliseconds");
105
106MODULE_LICENSE("GPL");
Kay Sievers72abb462008-04-18 13:50:44 -0700107MODULE_ALIAS("platform:smc91x");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108
109/*
110 * The internal workings of the driver. If you are changing anything
111 * here with the SMC stuff, you should have the datasheet and know
112 * what you are doing.
113 */
114#define CARDNAME "smc91x"
115
116/*
117 * Use power-down feature of the chip
118 */
119#define POWER_DOWN 1
120
121/*
122 * Wait time for memory to be free. This probably shouldn't be
123 * tuned that much, as waiting for this means nothing else happens
124 * in the system
125 */
126#define MEMORY_WAIT_TIME 16
127
128/*
Nicolas Pitre5d0571d2005-11-17 14:02:48 -0500129 * The maximum number of processing loops allowed for each call to the
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400130 * IRQ handler.
Nicolas Pitre5d0571d2005-11-17 14:02:48 -0500131 */
132#define MAX_IRQ_LOOPS 8
133
134/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135 * This selects whether TX packets are sent one by one to the SMC91x internal
136 * memory and throttled until transmission completes. This may prevent
137 * RX overruns a litle by keeping much of the memory free for RX packets
138 * but to the expense of reduced TX throughput and increased IRQ overhead.
139 * Note this is not a cure for a too slow data bus or too high IRQ latency.
140 */
141#define THROTTLE_TX_PKTS 0
142
143/*
144 * The MII clock high/low times. 2x this number gives the MII clock period
145 * in microseconds. (was 50, but this gives 6.4ms for each MII transaction!)
146 */
147#define MII_DELAY 1
148
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149#if SMC_DEBUG > 0
150#define DBG(n, args...) \
151 do { \
152 if (SMC_DEBUG >= (n)) \
153 printk(args); \
154 } while (0)
155
156#define PRINTK(args...) printk(args)
157#else
158#define DBG(n, args...) do { } while(0)
159#define PRINTK(args...) printk(KERN_DEBUG args)
160#endif
161
162#if SMC_DEBUG > 3
163static void PRINT_PKT(u_char *buf, int length)
164{
165 int i;
166 int remainder;
167 int lines;
168
169 lines = length / 16;
170 remainder = length % 16;
171
172 for (i = 0; i < lines ; i ++) {
173 int cur;
174 for (cur = 0; cur < 8; cur++) {
175 u_char a, b;
176 a = *buf++;
177 b = *buf++;
178 printk("%02x%02x ", a, b);
179 }
180 printk("\n");
181 }
182 for (i = 0; i < remainder/2 ; i++) {
183 u_char a, b;
184 a = *buf++;
185 b = *buf++;
186 printk("%02x%02x ", a, b);
187 }
188 printk("\n");
189}
190#else
191#define PRINT_PKT(x...) do { } while(0)
192#endif
193
194
195/* this enables an interrupt in the interrupt mask register */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900196#define SMC_ENABLE_INT(lp, x) do { \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197 unsigned char mask; \
Dongdong Deng8ff499e2009-08-23 22:59:04 -0700198 unsigned long smc_enable_flags; \
199 spin_lock_irqsave(&lp->lock, smc_enable_flags); \
Magnus Dammcfdfa862008-02-22 19:55:05 +0900200 mask = SMC_GET_INT_MASK(lp); \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201 mask |= (x); \
Magnus Dammcfdfa862008-02-22 19:55:05 +0900202 SMC_SET_INT_MASK(lp, mask); \
Dongdong Deng8ff499e2009-08-23 22:59:04 -0700203 spin_unlock_irqrestore(&lp->lock, smc_enable_flags); \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204} while (0)
205
206/* this disables an interrupt from the interrupt mask register */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900207#define SMC_DISABLE_INT(lp, x) do { \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208 unsigned char mask; \
Dongdong Deng8ff499e2009-08-23 22:59:04 -0700209 unsigned long smc_disable_flags; \
210 spin_lock_irqsave(&lp->lock, smc_disable_flags); \
Magnus Dammcfdfa862008-02-22 19:55:05 +0900211 mask = SMC_GET_INT_MASK(lp); \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212 mask &= ~(x); \
Magnus Dammcfdfa862008-02-22 19:55:05 +0900213 SMC_SET_INT_MASK(lp, mask); \
Dongdong Deng8ff499e2009-08-23 22:59:04 -0700214 spin_unlock_irqrestore(&lp->lock, smc_disable_flags); \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700215} while (0)
216
217/*
218 * Wait while MMU is busy. This is usually in the order of a few nanosecs
219 * if at all, but let's avoid deadlocking the system if the hardware
220 * decides to go south.
221 */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900222#define SMC_WAIT_MMU_BUSY(lp) do { \
223 if (unlikely(SMC_GET_MMU_CMD(lp) & MC_BUSY)) { \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700224 unsigned long timeout = jiffies + 2; \
Magnus Dammcfdfa862008-02-22 19:55:05 +0900225 while (SMC_GET_MMU_CMD(lp) & MC_BUSY) { \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226 if (time_after(jiffies, timeout)) { \
227 printk("%s: timeout %s line %d\n", \
228 dev->name, __FILE__, __LINE__); \
229 break; \
230 } \
231 cpu_relax(); \
232 } \
233 } \
234} while (0)
235
236
237/*
238 * this does a soft reset on the device
239 */
240static void smc_reset(struct net_device *dev)
241{
242 struct smc_local *lp = netdev_priv(dev);
243 void __iomem *ioaddr = lp->base;
244 unsigned int ctl, cfg;
Nicolas Pitrebe836682005-06-19 23:56:21 -0400245 struct sk_buff *pending_skb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700247 DBG(2, "%s: %s\n", dev->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700248
Nicolas Pitrebe836682005-06-19 23:56:21 -0400249 /* Disable all interrupts, block TX tasklet */
Russell King76cb4fe2006-08-14 23:00:20 -0700250 spin_lock_irq(&lp->lock);
Magnus Dammcfdfa862008-02-22 19:55:05 +0900251 SMC_SELECT_BANK(lp, 2);
252 SMC_SET_INT_MASK(lp, 0);
Nicolas Pitrebe836682005-06-19 23:56:21 -0400253 pending_skb = lp->pending_tx_skb;
254 lp->pending_tx_skb = NULL;
Russell King76cb4fe2006-08-14 23:00:20 -0700255 spin_unlock_irq(&lp->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256
Nicolas Pitrebe836682005-06-19 23:56:21 -0400257 /* free any pending tx skb */
258 if (pending_skb) {
259 dev_kfree_skb(pending_skb);
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700260 dev->stats.tx_errors++;
261 dev->stats.tx_aborted_errors++;
Nicolas Pitrebe836682005-06-19 23:56:21 -0400262 }
263
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264 /*
265 * This resets the registers mostly to defaults, but doesn't
266 * affect EEPROM. That seems unnecessary
267 */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900268 SMC_SELECT_BANK(lp, 0);
269 SMC_SET_RCR(lp, RCR_SOFTRST);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700270
271 /*
272 * Setup the Configuration Register
273 * This is necessary because the CONFIG_REG is not affected
274 * by a soft reset
275 */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900276 SMC_SELECT_BANK(lp, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700277
278 cfg = CONFIG_DEFAULT;
279
280 /*
281 * Setup for fast accesses if requested. If the card/system
282 * can't handle it then there will be no recovery except for
283 * a hard reset or power cycle
284 */
Eric Miaoc4f0e762008-06-19 17:39:03 +0800285 if (lp->cfg.flags & SMC91X_NOWAIT)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286 cfg |= CONFIG_NO_WAIT;
287
288 /*
289 * Release from possible power-down state
290 * Configuration register is not affected by Soft Reset
291 */
292 cfg |= CONFIG_EPH_POWER_EN;
293
Magnus Dammcfdfa862008-02-22 19:55:05 +0900294 SMC_SET_CONFIG(lp, cfg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295
296 /* this should pause enough for the chip to be happy */
297 /*
298 * elaborate? What does the chip _need_? --jgarzik
299 *
300 * This seems to be undocumented, but something the original
301 * driver(s) have always done. Suspect undocumented timing
302 * info/determined empirically. --rmk
303 */
304 udelay(1);
305
306 /* Disable transmit and receive functionality */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900307 SMC_SELECT_BANK(lp, 0);
308 SMC_SET_RCR(lp, RCR_CLEAR);
309 SMC_SET_TCR(lp, TCR_CLEAR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310
Magnus Dammcfdfa862008-02-22 19:55:05 +0900311 SMC_SELECT_BANK(lp, 1);
312 ctl = SMC_GET_CTL(lp) | CTL_LE_ENABLE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313
314 /*
315 * Set the control register to automatically release successfully
316 * transmitted packets, to make the best use out of our limited
317 * memory
318 */
319 if(!THROTTLE_TX_PKTS)
320 ctl |= CTL_AUTO_RELEASE;
321 else
322 ctl &= ~CTL_AUTO_RELEASE;
Magnus Dammcfdfa862008-02-22 19:55:05 +0900323 SMC_SET_CTL(lp, ctl);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324
325 /* Reset the MMU */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900326 SMC_SELECT_BANK(lp, 2);
327 SMC_SET_MMU_CMD(lp, MC_RESET);
328 SMC_WAIT_MMU_BUSY(lp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329}
330
331/*
332 * Enable Interrupts, Receive, and Transmit
333 */
334static void smc_enable(struct net_device *dev)
335{
336 struct smc_local *lp = netdev_priv(dev);
337 void __iomem *ioaddr = lp->base;
338 int mask;
339
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700340 DBG(2, "%s: %s\n", dev->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341
342 /* see the header file for options in TCR/RCR DEFAULT */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900343 SMC_SELECT_BANK(lp, 0);
344 SMC_SET_TCR(lp, lp->tcr_cur_mode);
345 SMC_SET_RCR(lp, lp->rcr_cur_mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346
Magnus Dammcfdfa862008-02-22 19:55:05 +0900347 SMC_SELECT_BANK(lp, 1);
348 SMC_SET_MAC_ADDR(lp, dev->dev_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700349
350 /* now, enable interrupts */
351 mask = IM_EPH_INT|IM_RX_OVRN_INT|IM_RCV_INT;
352 if (lp->version >= (CHIP_91100 << 4))
353 mask |= IM_MDINT;
Magnus Dammcfdfa862008-02-22 19:55:05 +0900354 SMC_SELECT_BANK(lp, 2);
355 SMC_SET_INT_MASK(lp, mask);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356
357 /*
358 * From this point the register bank must _NOT_ be switched away
359 * to something else than bank 2 without proper locking against
360 * races with any tasklet or interrupt handlers until smc_shutdown()
361 * or smc_reset() is called.
362 */
363}
364
365/*
366 * this puts the device in an inactive state
367 */
368static void smc_shutdown(struct net_device *dev)
369{
370 struct smc_local *lp = netdev_priv(dev);
371 void __iomem *ioaddr = lp->base;
Nicolas Pitrebe836682005-06-19 23:56:21 -0400372 struct sk_buff *pending_skb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700374 DBG(2, "%s: %s\n", CARDNAME, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375
376 /* no more interrupts for me */
Russell King76cb4fe2006-08-14 23:00:20 -0700377 spin_lock_irq(&lp->lock);
Magnus Dammcfdfa862008-02-22 19:55:05 +0900378 SMC_SELECT_BANK(lp, 2);
379 SMC_SET_INT_MASK(lp, 0);
Nicolas Pitrebe836682005-06-19 23:56:21 -0400380 pending_skb = lp->pending_tx_skb;
381 lp->pending_tx_skb = NULL;
Russell King76cb4fe2006-08-14 23:00:20 -0700382 spin_unlock_irq(&lp->lock);
Nicolas Pitrebe836682005-06-19 23:56:21 -0400383 if (pending_skb)
384 dev_kfree_skb(pending_skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700385
386 /* and tell the card to stay away from that nasty outside world */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900387 SMC_SELECT_BANK(lp, 0);
388 SMC_SET_RCR(lp, RCR_CLEAR);
389 SMC_SET_TCR(lp, TCR_CLEAR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700390
391#ifdef POWER_DOWN
392 /* finally, shut the chip down */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900393 SMC_SELECT_BANK(lp, 1);
394 SMC_SET_CONFIG(lp, SMC_GET_CONFIG(lp) & ~CONFIG_EPH_POWER_EN);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395#endif
396}
397
398/*
399 * This is the procedure to handle the receipt of a packet.
400 */
401static inline void smc_rcv(struct net_device *dev)
402{
403 struct smc_local *lp = netdev_priv(dev);
404 void __iomem *ioaddr = lp->base;
405 unsigned int packet_number, status, packet_len;
406
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700407 DBG(3, "%s: %s\n", dev->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408
Magnus Dammcfdfa862008-02-22 19:55:05 +0900409 packet_number = SMC_GET_RXFIFO(lp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410 if (unlikely(packet_number & RXFIFO_REMPTY)) {
411 PRINTK("%s: smc_rcv with nothing on FIFO.\n", dev->name);
412 return;
413 }
414
415 /* read from start of packet */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900416 SMC_SET_PTR(lp, PTR_READ | PTR_RCV | PTR_AUTOINC);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417
418 /* First two words are status and packet length */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900419 SMC_GET_PKT_HDR(lp, status, packet_len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420 packet_len &= 0x07ff; /* mask off top bits */
421 DBG(2, "%s: RX PNR 0x%x STATUS 0x%04x LENGTH 0x%04x (%d)\n",
422 dev->name, packet_number, status,
423 packet_len, packet_len);
424
425 back:
426 if (unlikely(packet_len < 6 || status & RS_ERRORS)) {
427 if (status & RS_TOOLONG && packet_len <= (1514 + 4 + 6)) {
428 /* accept VLAN packets */
429 status &= ~RS_TOOLONG;
430 goto back;
431 }
432 if (packet_len < 6) {
433 /* bloody hardware */
434 printk(KERN_ERR "%s: fubar (rxlen %u status %x\n",
435 dev->name, packet_len, status);
436 status |= RS_TOOSHORT;
437 }
Magnus Dammcfdfa862008-02-22 19:55:05 +0900438 SMC_WAIT_MMU_BUSY(lp);
439 SMC_SET_MMU_CMD(lp, MC_RELEASE);
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700440 dev->stats.rx_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441 if (status & RS_ALGNERR)
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700442 dev->stats.rx_frame_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700443 if (status & (RS_TOOSHORT | RS_TOOLONG))
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700444 dev->stats.rx_length_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445 if (status & RS_BADCRC)
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700446 dev->stats.rx_crc_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447 } else {
448 struct sk_buff *skb;
449 unsigned char *data;
450 unsigned int data_len;
451
452 /* set multicast stats */
453 if (status & RS_MULTICAST)
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700454 dev->stats.multicast++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455
456 /*
457 * Actual payload is packet_len - 6 (or 5 if odd byte).
458 * We want skb_reserve(2) and the final ctrl word
459 * (2 bytes, possibly containing the payload odd byte).
460 * Furthermore, we add 2 bytes to allow rounding up to
461 * multiple of 4 bytes on 32 bit buses.
462 * Hence packet_len - 6 + 2 + 2 + 2.
463 */
464 skb = dev_alloc_skb(packet_len);
465 if (unlikely(skb == NULL)) {
466 printk(KERN_NOTICE "%s: Low memory, packet dropped.\n",
467 dev->name);
Magnus Dammcfdfa862008-02-22 19:55:05 +0900468 SMC_WAIT_MMU_BUSY(lp);
469 SMC_SET_MMU_CMD(lp, MC_RELEASE);
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700470 dev->stats.rx_dropped++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700471 return;
472 }
473
474 /* Align IP header to 32 bits */
475 skb_reserve(skb, 2);
476
477 /* BUG: the LAN91C111 rev A never sets this bit. Force it. */
478 if (lp->version == 0x90)
479 status |= RS_ODDFRAME;
480
481 /*
482 * If odd length: packet_len - 5,
483 * otherwise packet_len - 6.
484 * With the trailing ctrl byte it's packet_len - 4.
485 */
486 data_len = packet_len - ((status & RS_ODDFRAME) ? 5 : 6);
487 data = skb_put(skb, data_len);
Magnus Dammcfdfa862008-02-22 19:55:05 +0900488 SMC_PULL_DATA(lp, data, packet_len - 4);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700489
Magnus Dammcfdfa862008-02-22 19:55:05 +0900490 SMC_WAIT_MMU_BUSY(lp);
491 SMC_SET_MMU_CMD(lp, MC_RELEASE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492
493 PRINT_PKT(data, packet_len - 4);
494
Linus Torvalds1da177e2005-04-16 15:20:36 -0700495 skb->protocol = eth_type_trans(skb, dev);
496 netif_rx(skb);
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700497 dev->stats.rx_packets++;
498 dev->stats.rx_bytes += data_len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700499 }
500}
501
502#ifdef CONFIG_SMP
503/*
504 * On SMP we have the following problem:
505 *
506 * A = smc_hardware_send_pkt()
507 * B = smc_hard_start_xmit()
508 * C = smc_interrupt()
509 *
510 * A and B can never be executed simultaneously. However, at least on UP,
511 * it is possible (and even desirable) for C to interrupt execution of
512 * A or B in order to have better RX reliability and avoid overruns.
513 * C, just like A and B, must have exclusive access to the chip and
514 * each of them must lock against any other concurrent access.
515 * Unfortunately this is not possible to have C suspend execution of A or
516 * B taking place on another CPU. On UP this is no an issue since A and B
517 * are run from softirq context and C from hard IRQ context, and there is
518 * no other CPU where concurrent access can happen.
519 * If ever there is a way to force at least B and C to always be executed
520 * on the same CPU then we could use read/write locks to protect against
521 * any other concurrent access and C would always interrupt B. But life
522 * isn't that easy in a SMP world...
523 */
Dongdong Deng8ff499e2009-08-23 22:59:04 -0700524#define smc_special_trylock(lock, flags) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700525({ \
526 int __ret; \
Dongdong Deng8ff499e2009-08-23 22:59:04 -0700527 local_irq_save(flags); \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528 __ret = spin_trylock(lock); \
529 if (!__ret) \
Dongdong Deng8ff499e2009-08-23 22:59:04 -0700530 local_irq_restore(flags); \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700531 __ret; \
532})
Alexey Dobriyan0b4f2922009-08-26 12:03:35 -0700533#define smc_special_lock(lock, flags) spin_lock_irqsave(lock, flags)
Dongdong Deng8ff499e2009-08-23 22:59:04 -0700534#define smc_special_unlock(lock, flags) spin_unlock_irqrestore(lock, flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700535#else
Mike Frysingerfd0775b2009-12-09 03:40:04 +0000536#define smc_special_trylock(lock, flags) (flags == flags)
537#define smc_special_lock(lock, flags) do { flags = 0; } while (0)
538#define smc_special_unlock(lock, flags) do { flags = 0; } while (0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700539#endif
540
541/*
542 * This is called to actually send a packet to the chip.
543 */
544static void smc_hardware_send_pkt(unsigned long data)
545{
546 struct net_device *dev = (struct net_device *)data;
547 struct smc_local *lp = netdev_priv(dev);
548 void __iomem *ioaddr = lp->base;
549 struct sk_buff *skb;
550 unsigned int packet_no, len;
551 unsigned char *buf;
Dongdong Deng8ff499e2009-08-23 22:59:04 -0700552 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700553
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700554 DBG(3, "%s: %s\n", dev->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700555
Dongdong Deng8ff499e2009-08-23 22:59:04 -0700556 if (!smc_special_trylock(&lp->lock, flags)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700557 netif_stop_queue(dev);
558 tasklet_schedule(&lp->tx_task);
559 return;
560 }
561
562 skb = lp->pending_tx_skb;
Nicolas Pitrebe836682005-06-19 23:56:21 -0400563 if (unlikely(!skb)) {
Dongdong Deng8ff499e2009-08-23 22:59:04 -0700564 smc_special_unlock(&lp->lock, flags);
Nicolas Pitrebe836682005-06-19 23:56:21 -0400565 return;
566 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700567 lp->pending_tx_skb = NULL;
Nicolas Pitrebe836682005-06-19 23:56:21 -0400568
Magnus Dammcfdfa862008-02-22 19:55:05 +0900569 packet_no = SMC_GET_AR(lp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700570 if (unlikely(packet_no & AR_FAILED)) {
571 printk("%s: Memory allocation failed.\n", dev->name);
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700572 dev->stats.tx_errors++;
573 dev->stats.tx_fifo_errors++;
Dongdong Deng8ff499e2009-08-23 22:59:04 -0700574 smc_special_unlock(&lp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700575 goto done;
576 }
577
578 /* point to the beginning of the packet */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900579 SMC_SET_PN(lp, packet_no);
580 SMC_SET_PTR(lp, PTR_AUTOINC);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700581
582 buf = skb->data;
583 len = skb->len;
584 DBG(2, "%s: TX PNR 0x%x LENGTH 0x%04x (%d) BUF 0x%p\n",
585 dev->name, packet_no, len, len, buf);
586 PRINT_PKT(buf, len);
587
588 /*
589 * Send the packet length (+6 for status words, length, and ctl.
590 * The card will pad to 64 bytes with zeroes if packet is too small.
591 */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900592 SMC_PUT_PKT_HDR(lp, 0, len + 6);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700593
594 /* send the actual data */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900595 SMC_PUSH_DATA(lp, buf, len & ~1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700596
597 /* Send final ctl word with the last byte if there is one */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900598 SMC_outw(((len & 1) ? (0x2000 | buf[len-1]) : 0), ioaddr, DATA_REG(lp));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700599
600 /*
Nicolas Pitreea937562005-04-12 16:26:40 -0400601 * If THROTTLE_TX_PKTS is set, we stop the queue here. This will
602 * have the effect of having at most one packet queued for TX
603 * in the chip's memory at all time.
604 *
605 * If THROTTLE_TX_PKTS is not set then the queue is stopped only
606 * when memory allocation (MC_ALLOC) does not succeed right away.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700607 */
Nicolas Pitreea937562005-04-12 16:26:40 -0400608 if (THROTTLE_TX_PKTS)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700609 netif_stop_queue(dev);
610
611 /* queue the packet for TX */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900612 SMC_SET_MMU_CMD(lp, MC_ENQUEUE);
Dongdong Deng8ff499e2009-08-23 22:59:04 -0700613 smc_special_unlock(&lp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700614
615 dev->trans_start = jiffies;
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700616 dev->stats.tx_packets++;
617 dev->stats.tx_bytes += len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700618
Magnus Dammcfdfa862008-02-22 19:55:05 +0900619 SMC_ENABLE_INT(lp, IM_TX_INT | IM_TX_EMPTY_INT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700620
621done: if (!THROTTLE_TX_PKTS)
622 netif_wake_queue(dev);
623
624 dev_kfree_skb(skb);
625}
626
627/*
628 * Since I am not sure if I will have enough room in the chip's ram
629 * to store the packet, I call this routine which either sends it
630 * now, or set the card to generates an interrupt when ready
631 * for the packet.
632 */
633static int smc_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
634{
635 struct smc_local *lp = netdev_priv(dev);
636 void __iomem *ioaddr = lp->base;
637 unsigned int numPages, poll_count, status;
Dongdong Deng8ff499e2009-08-23 22:59:04 -0700638 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700639
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700640 DBG(3, "%s: %s\n", dev->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700641
642 BUG_ON(lp->pending_tx_skb != NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700643
644 /*
645 * The MMU wants the number of pages to be the number of 256 bytes
646 * 'pages', minus 1 (since a packet can't ever have 0 pages :))
647 *
648 * The 91C111 ignores the size bits, but earlier models don't.
649 *
650 * Pkt size for allocating is data length +6 (for additional status
651 * words, length and ctl)
652 *
653 * If odd size then last byte is included in ctl word.
654 */
655 numPages = ((skb->len & ~1) + (6 - 1)) >> 8;
656 if (unlikely(numPages > 7)) {
657 printk("%s: Far too big packet error.\n", dev->name);
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700658 dev->stats.tx_errors++;
659 dev->stats.tx_dropped++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660 dev_kfree_skb(skb);
Patrick McHardy6ed10652009-06-23 06:03:08 +0000661 return NETDEV_TX_OK;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700662 }
663
Dongdong Deng8ff499e2009-08-23 22:59:04 -0700664 smc_special_lock(&lp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700665
666 /* now, try to allocate the memory */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900667 SMC_SET_MMU_CMD(lp, MC_ALLOC | numPages);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700668
669 /*
670 * Poll the chip for a short amount of time in case the
671 * allocation succeeds quickly.
672 */
673 poll_count = MEMORY_WAIT_TIME;
674 do {
Magnus Dammcfdfa862008-02-22 19:55:05 +0900675 status = SMC_GET_INT(lp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700676 if (status & IM_ALLOC_INT) {
Magnus Dammcfdfa862008-02-22 19:55:05 +0900677 SMC_ACK_INT(lp, IM_ALLOC_INT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700678 break;
679 }
680 } while (--poll_count);
681
Dongdong Deng8ff499e2009-08-23 22:59:04 -0700682 smc_special_unlock(&lp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700683
Nicolas Pitrebe836682005-06-19 23:56:21 -0400684 lp->pending_tx_skb = skb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700685 if (!poll_count) {
686 /* oh well, wait until the chip finds memory later */
687 netif_stop_queue(dev);
688 DBG(2, "%s: TX memory allocation deferred.\n", dev->name);
Magnus Dammcfdfa862008-02-22 19:55:05 +0900689 SMC_ENABLE_INT(lp, IM_ALLOC_INT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700690 } else {
691 /*
692 * Allocation succeeded: push packet to the chip's own memory
693 * immediately.
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400694 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700695 smc_hardware_send_pkt((unsigned long)dev);
696 }
697
Patrick McHardy6ed10652009-06-23 06:03:08 +0000698 return NETDEV_TX_OK;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700699}
700
701/*
702 * This handles a TX interrupt, which is only called when:
703 * - a TX error occurred, or
704 * - CTL_AUTO_RELEASE is not set and TX of a packet completed.
705 */
706static void smc_tx(struct net_device *dev)
707{
708 struct smc_local *lp = netdev_priv(dev);
709 void __iomem *ioaddr = lp->base;
710 unsigned int saved_packet, packet_no, tx_status, pkt_len;
711
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700712 DBG(3, "%s: %s\n", dev->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700713
714 /* If the TX FIFO is empty then nothing to do */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900715 packet_no = SMC_GET_TXFIFO(lp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700716 if (unlikely(packet_no & TXFIFO_TEMPTY)) {
717 PRINTK("%s: smc_tx with nothing on FIFO.\n", dev->name);
718 return;
719 }
720
721 /* select packet to read from */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900722 saved_packet = SMC_GET_PN(lp);
723 SMC_SET_PN(lp, packet_no);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700724
725 /* read the first word (status word) from this packet */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900726 SMC_SET_PTR(lp, PTR_AUTOINC | PTR_READ);
727 SMC_GET_PKT_HDR(lp, tx_status, pkt_len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700728 DBG(2, "%s: TX STATUS 0x%04x PNR 0x%02x\n",
729 dev->name, tx_status, packet_no);
730
Nicolas Pitre8de90112005-04-12 16:21:11 -0400731 if (!(tx_status & ES_TX_SUC))
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700732 dev->stats.tx_errors++;
Nicolas Pitre8de90112005-04-12 16:21:11 -0400733
734 if (tx_status & ES_LOSTCARR)
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700735 dev->stats.tx_carrier_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700736
Nicolas Pitre8de90112005-04-12 16:21:11 -0400737 if (tx_status & (ES_LATCOL | ES_16COL)) {
738 PRINTK("%s: %s occurred on last xmit\n", dev->name,
739 (tx_status & ES_LATCOL) ?
740 "late collision" : "too many collisions");
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700741 dev->stats.tx_window_errors++;
742 if (!(dev->stats.tx_window_errors & 63) && net_ratelimit()) {
Nicolas Pitre8de90112005-04-12 16:21:11 -0400743 printk(KERN_INFO "%s: unexpectedly large number of "
744 "bad collisions. Please check duplex "
Linus Torvalds1da177e2005-04-16 15:20:36 -0700745 "setting.\n", dev->name);
746 }
747 }
748
749 /* kill the packet */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900750 SMC_WAIT_MMU_BUSY(lp);
751 SMC_SET_MMU_CMD(lp, MC_FREEPKT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700752
753 /* Don't restore Packet Number Reg until busy bit is cleared */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900754 SMC_WAIT_MMU_BUSY(lp);
755 SMC_SET_PN(lp, saved_packet);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700756
757 /* re-enable transmit */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900758 SMC_SELECT_BANK(lp, 0);
759 SMC_SET_TCR(lp, lp->tcr_cur_mode);
760 SMC_SELECT_BANK(lp, 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700761}
762
763
764/*---PHY CONTROL AND CONFIGURATION-----------------------------------------*/
765
766static void smc_mii_out(struct net_device *dev, unsigned int val, int bits)
767{
768 struct smc_local *lp = netdev_priv(dev);
769 void __iomem *ioaddr = lp->base;
770 unsigned int mii_reg, mask;
771
Magnus Dammcfdfa862008-02-22 19:55:05 +0900772 mii_reg = SMC_GET_MII(lp) & ~(MII_MCLK | MII_MDOE | MII_MDO);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700773 mii_reg |= MII_MDOE;
774
775 for (mask = 1 << (bits - 1); mask; mask >>= 1) {
776 if (val & mask)
777 mii_reg |= MII_MDO;
778 else
779 mii_reg &= ~MII_MDO;
780
Magnus Dammcfdfa862008-02-22 19:55:05 +0900781 SMC_SET_MII(lp, mii_reg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700782 udelay(MII_DELAY);
Magnus Dammcfdfa862008-02-22 19:55:05 +0900783 SMC_SET_MII(lp, mii_reg | MII_MCLK);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700784 udelay(MII_DELAY);
785 }
786}
787
788static unsigned int smc_mii_in(struct net_device *dev, int bits)
789{
790 struct smc_local *lp = netdev_priv(dev);
791 void __iomem *ioaddr = lp->base;
792 unsigned int mii_reg, mask, val;
793
Magnus Dammcfdfa862008-02-22 19:55:05 +0900794 mii_reg = SMC_GET_MII(lp) & ~(MII_MCLK | MII_MDOE | MII_MDO);
795 SMC_SET_MII(lp, mii_reg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700796
797 for (mask = 1 << (bits - 1), val = 0; mask; mask >>= 1) {
Magnus Dammcfdfa862008-02-22 19:55:05 +0900798 if (SMC_GET_MII(lp) & MII_MDI)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700799 val |= mask;
800
Magnus Dammcfdfa862008-02-22 19:55:05 +0900801 SMC_SET_MII(lp, mii_reg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700802 udelay(MII_DELAY);
Magnus Dammcfdfa862008-02-22 19:55:05 +0900803 SMC_SET_MII(lp, mii_reg | MII_MCLK);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700804 udelay(MII_DELAY);
805 }
806
807 return val;
808}
809
810/*
811 * Reads a register from the MII Management serial interface
812 */
813static int smc_phy_read(struct net_device *dev, int phyaddr, int phyreg)
814{
815 struct smc_local *lp = netdev_priv(dev);
816 void __iomem *ioaddr = lp->base;
817 unsigned int phydata;
818
Magnus Dammcfdfa862008-02-22 19:55:05 +0900819 SMC_SELECT_BANK(lp, 3);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700820
821 /* Idle - 32 ones */
822 smc_mii_out(dev, 0xffffffff, 32);
823
824 /* Start code (01) + read (10) + phyaddr + phyreg */
825 smc_mii_out(dev, 6 << 10 | phyaddr << 5 | phyreg, 14);
826
827 /* Turnaround (2bits) + phydata */
828 phydata = smc_mii_in(dev, 18);
829
830 /* Return to idle state */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900831 SMC_SET_MII(lp, SMC_GET_MII(lp) & ~(MII_MCLK|MII_MDOE|MII_MDO));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700832
833 DBG(3, "%s: phyaddr=0x%x, phyreg=0x%x, phydata=0x%x\n",
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700834 __func__, phyaddr, phyreg, phydata);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700835
Magnus Dammcfdfa862008-02-22 19:55:05 +0900836 SMC_SELECT_BANK(lp, 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700837 return phydata;
838}
839
840/*
841 * Writes a register to the MII Management serial interface
842 */
843static void smc_phy_write(struct net_device *dev, int phyaddr, int phyreg,
844 int phydata)
845{
846 struct smc_local *lp = netdev_priv(dev);
847 void __iomem *ioaddr = lp->base;
848
Magnus Dammcfdfa862008-02-22 19:55:05 +0900849 SMC_SELECT_BANK(lp, 3);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700850
851 /* Idle - 32 ones */
852 smc_mii_out(dev, 0xffffffff, 32);
853
854 /* Start code (01) + write (01) + phyaddr + phyreg + turnaround + phydata */
855 smc_mii_out(dev, 5 << 28 | phyaddr << 23 | phyreg << 18 | 2 << 16 | phydata, 32);
856
857 /* Return to idle state */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900858 SMC_SET_MII(lp, SMC_GET_MII(lp) & ~(MII_MCLK|MII_MDOE|MII_MDO));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700859
860 DBG(3, "%s: phyaddr=0x%x, phyreg=0x%x, phydata=0x%x\n",
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700861 __func__, phyaddr, phyreg, phydata);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700862
Magnus Dammcfdfa862008-02-22 19:55:05 +0900863 SMC_SELECT_BANK(lp, 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700864}
865
866/*
867 * Finds and reports the PHY address
868 */
869static void smc_phy_detect(struct net_device *dev)
870{
871 struct smc_local *lp = netdev_priv(dev);
872 int phyaddr;
873
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700874 DBG(2, "%s: %s\n", dev->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700875
876 lp->phy_type = 0;
877
878 /*
879 * Scan all 32 PHY addresses if necessary, starting at
880 * PHY#1 to PHY#31, and then PHY#0 last.
881 */
882 for (phyaddr = 1; phyaddr < 33; ++phyaddr) {
883 unsigned int id1, id2;
884
885 /* Read the PHY identifiers */
886 id1 = smc_phy_read(dev, phyaddr & 31, MII_PHYSID1);
887 id2 = smc_phy_read(dev, phyaddr & 31, MII_PHYSID2);
888
889 DBG(3, "%s: phy_id1=0x%x, phy_id2=0x%x\n",
890 dev->name, id1, id2);
891
892 /* Make sure it is a valid identifier */
893 if (id1 != 0x0000 && id1 != 0xffff && id1 != 0x8000 &&
894 id2 != 0x0000 && id2 != 0xffff && id2 != 0x8000) {
895 /* Save the PHY's address */
896 lp->mii.phy_id = phyaddr & 31;
897 lp->phy_type = id1 << 16 | id2;
898 break;
899 }
900 }
901}
902
903/*
904 * Sets the PHY to a configuration as determined by the user
905 */
906static int smc_phy_fixed(struct net_device *dev)
907{
908 struct smc_local *lp = netdev_priv(dev);
909 void __iomem *ioaddr = lp->base;
910 int phyaddr = lp->mii.phy_id;
911 int bmcr, cfg1;
912
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700913 DBG(3, "%s: %s\n", dev->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700914
915 /* Enter Link Disable state */
916 cfg1 = smc_phy_read(dev, phyaddr, PHY_CFG1_REG);
917 cfg1 |= PHY_CFG1_LNKDIS;
918 smc_phy_write(dev, phyaddr, PHY_CFG1_REG, cfg1);
919
920 /*
921 * Set our fixed capabilities
922 * Disable auto-negotiation
923 */
924 bmcr = 0;
925
926 if (lp->ctl_rfduplx)
927 bmcr |= BMCR_FULLDPLX;
928
929 if (lp->ctl_rspeed == 100)
930 bmcr |= BMCR_SPEED100;
931
932 /* Write our capabilities to the phy control register */
933 smc_phy_write(dev, phyaddr, MII_BMCR, bmcr);
934
935 /* Re-Configure the Receive/Phy Control register */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900936 SMC_SELECT_BANK(lp, 0);
937 SMC_SET_RPC(lp, lp->rpc_cur_mode);
938 SMC_SELECT_BANK(lp, 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700939
940 return 1;
941}
942
943/*
944 * smc_phy_reset - reset the phy
945 * @dev: net device
946 * @phy: phy address
947 *
948 * Issue a software reset for the specified PHY and
949 * wait up to 100ms for the reset to complete. We should
950 * not access the PHY for 50ms after issuing the reset.
951 *
952 * The time to wait appears to be dependent on the PHY.
953 *
954 * Must be called with lp->lock locked.
955 */
956static int smc_phy_reset(struct net_device *dev, int phy)
957{
958 struct smc_local *lp = netdev_priv(dev);
959 unsigned int bmcr;
960 int timeout;
961
962 smc_phy_write(dev, phy, MII_BMCR, BMCR_RESET);
963
964 for (timeout = 2; timeout; timeout--) {
965 spin_unlock_irq(&lp->lock);
966 msleep(50);
967 spin_lock_irq(&lp->lock);
968
969 bmcr = smc_phy_read(dev, phy, MII_BMCR);
970 if (!(bmcr & BMCR_RESET))
971 break;
972 }
973
974 return bmcr & BMCR_RESET;
975}
976
977/*
978 * smc_phy_powerdown - powerdown phy
979 * @dev: net device
980 *
981 * Power down the specified PHY
982 */
983static void smc_phy_powerdown(struct net_device *dev)
984{
985 struct smc_local *lp = netdev_priv(dev);
986 unsigned int bmcr;
987 int phy = lp->mii.phy_id;
988
989 if (lp->phy_type == 0)
990 return;
991
992 /* We need to ensure that no calls to smc_phy_configure are
993 pending.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700994 */
David S. Miller4bb073c2008-06-12 02:22:02 -0700995 cancel_work_sync(&lp->phy_configure);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700996
997 bmcr = smc_phy_read(dev, phy, MII_BMCR);
998 smc_phy_write(dev, phy, MII_BMCR, bmcr | BMCR_PDOWN);
999}
1000
1001/*
1002 * smc_phy_check_media - check the media status and adjust TCR
1003 * @dev: net device
1004 * @init: set true for initialisation
1005 *
1006 * Select duplex mode depending on negotiation state. This
1007 * also updates our carrier state.
1008 */
1009static void smc_phy_check_media(struct net_device *dev, int init)
1010{
1011 struct smc_local *lp = netdev_priv(dev);
1012 void __iomem *ioaddr = lp->base;
1013
1014 if (mii_check_media(&lp->mii, netif_msg_link(lp), init)) {
1015 /* duplex state has changed */
1016 if (lp->mii.full_duplex) {
1017 lp->tcr_cur_mode |= TCR_SWFDUP;
1018 } else {
1019 lp->tcr_cur_mode &= ~TCR_SWFDUP;
1020 }
1021
Magnus Dammcfdfa862008-02-22 19:55:05 +09001022 SMC_SELECT_BANK(lp, 0);
1023 SMC_SET_TCR(lp, lp->tcr_cur_mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001024 }
1025}
1026
1027/*
1028 * Configures the specified PHY through the MII management interface
1029 * using Autonegotiation.
1030 * Calls smc_phy_fixed() if the user has requested a certain config.
1031 * If RPC ANEG bit is set, the media selection is dependent purely on
1032 * the selection by the MII (either in the MII BMCR reg or the result
1033 * of autonegotiation.) If the RPC ANEG bit is cleared, the selection
1034 * is controlled by the RPC SPEED and RPC DPLX bits.
1035 */
David Howells6d5aefb2006-12-05 19:36:26 +00001036static void smc_phy_configure(struct work_struct *work)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001037{
David Howells6d5aefb2006-12-05 19:36:26 +00001038 struct smc_local *lp =
1039 container_of(work, struct smc_local, phy_configure);
1040 struct net_device *dev = lp->dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001041 void __iomem *ioaddr = lp->base;
1042 int phyaddr = lp->mii.phy_id;
1043 int my_phy_caps; /* My PHY capabilities */
1044 int my_ad_caps; /* My Advertised capabilities */
1045 int status;
1046
1047 DBG(3, "%s:smc_program_phy()\n", dev->name);
1048
1049 spin_lock_irq(&lp->lock);
1050
1051 /*
1052 * We should not be called if phy_type is zero.
1053 */
1054 if (lp->phy_type == 0)
1055 goto smc_phy_configure_exit;
1056
1057 if (smc_phy_reset(dev, phyaddr)) {
1058 printk("%s: PHY reset timed out\n", dev->name);
1059 goto smc_phy_configure_exit;
1060 }
1061
1062 /*
1063 * Enable PHY Interrupts (for register 18)
1064 * Interrupts listed here are disabled
1065 */
1066 smc_phy_write(dev, phyaddr, PHY_MASK_REG,
1067 PHY_INT_LOSSSYNC | PHY_INT_CWRD | PHY_INT_SSD |
1068 PHY_INT_ESD | PHY_INT_RPOL | PHY_INT_JAB |
1069 PHY_INT_SPDDET | PHY_INT_DPLXDET);
1070
1071 /* Configure the Receive/Phy Control register */
Magnus Dammcfdfa862008-02-22 19:55:05 +09001072 SMC_SELECT_BANK(lp, 0);
1073 SMC_SET_RPC(lp, lp->rpc_cur_mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001074
1075 /* If the user requested no auto neg, then go set his request */
1076 if (lp->mii.force_media) {
1077 smc_phy_fixed(dev);
1078 goto smc_phy_configure_exit;
1079 }
1080
1081 /* Copy our capabilities from MII_BMSR to MII_ADVERTISE */
1082 my_phy_caps = smc_phy_read(dev, phyaddr, MII_BMSR);
1083
1084 if (!(my_phy_caps & BMSR_ANEGCAPABLE)) {
1085 printk(KERN_INFO "Auto negotiation NOT supported\n");
1086 smc_phy_fixed(dev);
1087 goto smc_phy_configure_exit;
1088 }
1089
1090 my_ad_caps = ADVERTISE_CSMA; /* I am CSMA capable */
1091
1092 if (my_phy_caps & BMSR_100BASE4)
1093 my_ad_caps |= ADVERTISE_100BASE4;
1094 if (my_phy_caps & BMSR_100FULL)
1095 my_ad_caps |= ADVERTISE_100FULL;
1096 if (my_phy_caps & BMSR_100HALF)
1097 my_ad_caps |= ADVERTISE_100HALF;
1098 if (my_phy_caps & BMSR_10FULL)
1099 my_ad_caps |= ADVERTISE_10FULL;
1100 if (my_phy_caps & BMSR_10HALF)
1101 my_ad_caps |= ADVERTISE_10HALF;
1102
1103 /* Disable capabilities not selected by our user */
1104 if (lp->ctl_rspeed != 100)
1105 my_ad_caps &= ~(ADVERTISE_100BASE4|ADVERTISE_100FULL|ADVERTISE_100HALF);
1106
1107 if (!lp->ctl_rfduplx)
1108 my_ad_caps &= ~(ADVERTISE_100FULL|ADVERTISE_10FULL);
1109
1110 /* Update our Auto-Neg Advertisement Register */
1111 smc_phy_write(dev, phyaddr, MII_ADVERTISE, my_ad_caps);
1112 lp->mii.advertising = my_ad_caps;
1113
1114 /*
1115 * Read the register back. Without this, it appears that when
1116 * auto-negotiation is restarted, sometimes it isn't ready and
1117 * the link does not come up.
1118 */
1119 status = smc_phy_read(dev, phyaddr, MII_ADVERTISE);
1120
1121 DBG(2, "%s: phy caps=%x\n", dev->name, my_phy_caps);
1122 DBG(2, "%s: phy advertised caps=%x\n", dev->name, my_ad_caps);
1123
1124 /* Restart auto-negotiation process in order to advertise my caps */
1125 smc_phy_write(dev, phyaddr, MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART);
1126
1127 smc_phy_check_media(dev, 1);
1128
1129smc_phy_configure_exit:
Magnus Dammcfdfa862008-02-22 19:55:05 +09001130 SMC_SELECT_BANK(lp, 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001131 spin_unlock_irq(&lp->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001132}
1133
1134/*
1135 * smc_phy_interrupt
1136 *
1137 * Purpose: Handle interrupts relating to PHY register 18. This is
1138 * called from the "hard" interrupt handler under our private spinlock.
1139 */
1140static void smc_phy_interrupt(struct net_device *dev)
1141{
1142 struct smc_local *lp = netdev_priv(dev);
1143 int phyaddr = lp->mii.phy_id;
1144 int phy18;
1145
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07001146 DBG(2, "%s: %s\n", dev->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001147
1148 if (lp->phy_type == 0)
1149 return;
1150
1151 for(;;) {
1152 smc_phy_check_media(dev, 0);
1153
1154 /* Read PHY Register 18, Status Output */
1155 phy18 = smc_phy_read(dev, phyaddr, PHY_INT_REG);
1156 if ((phy18 & PHY_INT_INT) == 0)
1157 break;
1158 }
1159}
1160
1161/*--- END PHY CONTROL AND CONFIGURATION-------------------------------------*/
1162
1163static void smc_10bt_check_media(struct net_device *dev, int init)
1164{
1165 struct smc_local *lp = netdev_priv(dev);
1166 void __iomem *ioaddr = lp->base;
1167 unsigned int old_carrier, new_carrier;
1168
1169 old_carrier = netif_carrier_ok(dev) ? 1 : 0;
1170
Magnus Dammcfdfa862008-02-22 19:55:05 +09001171 SMC_SELECT_BANK(lp, 0);
1172 new_carrier = (SMC_GET_EPH_STATUS(lp) & ES_LINK_OK) ? 1 : 0;
1173 SMC_SELECT_BANK(lp, 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001174
1175 if (init || (old_carrier != new_carrier)) {
1176 if (!new_carrier) {
1177 netif_carrier_off(dev);
1178 } else {
1179 netif_carrier_on(dev);
1180 }
1181 if (netif_msg_link(lp))
1182 printk(KERN_INFO "%s: link %s\n", dev->name,
1183 new_carrier ? "up" : "down");
1184 }
1185}
1186
1187static void smc_eph_interrupt(struct net_device *dev)
1188{
1189 struct smc_local *lp = netdev_priv(dev);
1190 void __iomem *ioaddr = lp->base;
1191 unsigned int ctl;
1192
1193 smc_10bt_check_media(dev, 0);
1194
Magnus Dammcfdfa862008-02-22 19:55:05 +09001195 SMC_SELECT_BANK(lp, 1);
1196 ctl = SMC_GET_CTL(lp);
1197 SMC_SET_CTL(lp, ctl & ~CTL_LE_ENABLE);
1198 SMC_SET_CTL(lp, ctl);
1199 SMC_SELECT_BANK(lp, 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001200}
1201
1202/*
1203 * This is the main routine of the driver, to handle the device when
1204 * it needs some attention.
1205 */
David Howells7d12e782006-10-05 14:55:46 +01001206static irqreturn_t smc_interrupt(int irq, void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001207{
1208 struct net_device *dev = dev_id;
1209 struct smc_local *lp = netdev_priv(dev);
1210 void __iomem *ioaddr = lp->base;
1211 int status, mask, timeout, card_stats;
1212 int saved_pointer;
1213
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07001214 DBG(3, "%s: %s\n", dev->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001215
1216 spin_lock(&lp->lock);
1217
1218 /* A preamble may be used when there is a potential race
1219 * between the interruptible transmit functions and this
1220 * ISR. */
1221 SMC_INTERRUPT_PREAMBLE;
1222
Magnus Dammcfdfa862008-02-22 19:55:05 +09001223 saved_pointer = SMC_GET_PTR(lp);
1224 mask = SMC_GET_INT_MASK(lp);
1225 SMC_SET_INT_MASK(lp, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001226
1227 /* set a timeout value, so I don't stay here forever */
Nicolas Pitre5d0571d2005-11-17 14:02:48 -05001228 timeout = MAX_IRQ_LOOPS;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001229
1230 do {
Magnus Dammcfdfa862008-02-22 19:55:05 +09001231 status = SMC_GET_INT(lp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001232
1233 DBG(2, "%s: INT 0x%02x MASK 0x%02x MEM 0x%04x FIFO 0x%04x\n",
1234 dev->name, status, mask,
Magnus Dammcfdfa862008-02-22 19:55:05 +09001235 ({ int meminfo; SMC_SELECT_BANK(lp, 0);
1236 meminfo = SMC_GET_MIR(lp);
1237 SMC_SELECT_BANK(lp, 2); meminfo; }),
1238 SMC_GET_FIFO(lp));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001239
1240 status &= mask;
1241 if (!status)
1242 break;
1243
Nicolas Pitreea937562005-04-12 16:26:40 -04001244 if (status & IM_TX_INT) {
1245 /* do this before RX as it will free memory quickly */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001246 DBG(3, "%s: TX int\n", dev->name);
1247 smc_tx(dev);
Magnus Dammcfdfa862008-02-22 19:55:05 +09001248 SMC_ACK_INT(lp, IM_TX_INT);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001249 if (THROTTLE_TX_PKTS)
1250 netif_wake_queue(dev);
Nicolas Pitreea937562005-04-12 16:26:40 -04001251 } else if (status & IM_RCV_INT) {
1252 DBG(3, "%s: RX irq\n", dev->name);
1253 smc_rcv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001254 } else if (status & IM_ALLOC_INT) {
1255 DBG(3, "%s: Allocation irq\n", dev->name);
1256 tasklet_hi_schedule(&lp->tx_task);
1257 mask &= ~IM_ALLOC_INT;
1258 } else if (status & IM_TX_EMPTY_INT) {
1259 DBG(3, "%s: TX empty\n", dev->name);
1260 mask &= ~IM_TX_EMPTY_INT;
1261
1262 /* update stats */
Magnus Dammcfdfa862008-02-22 19:55:05 +09001263 SMC_SELECT_BANK(lp, 0);
1264 card_stats = SMC_GET_COUNTER(lp);
1265 SMC_SELECT_BANK(lp, 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001266
1267 /* single collisions */
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001268 dev->stats.collisions += card_stats & 0xF;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001269 card_stats >>= 4;
1270
1271 /* multiple collisions */
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001272 dev->stats.collisions += card_stats & 0xF;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001273 } else if (status & IM_RX_OVRN_INT) {
Nicolas Pitre8de90112005-04-12 16:21:11 -04001274 DBG(1, "%s: RX overrun (EPH_ST 0x%04x)\n", dev->name,
Magnus Dammcfdfa862008-02-22 19:55:05 +09001275 ({ int eph_st; SMC_SELECT_BANK(lp, 0);
1276 eph_st = SMC_GET_EPH_STATUS(lp);
1277 SMC_SELECT_BANK(lp, 2); eph_st; }));
1278 SMC_ACK_INT(lp, IM_RX_OVRN_INT);
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001279 dev->stats.rx_errors++;
1280 dev->stats.rx_fifo_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001281 } else if (status & IM_EPH_INT) {
1282 smc_eph_interrupt(dev);
1283 } else if (status & IM_MDINT) {
Magnus Dammcfdfa862008-02-22 19:55:05 +09001284 SMC_ACK_INT(lp, IM_MDINT);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001285 smc_phy_interrupt(dev);
1286 } else if (status & IM_ERCV_INT) {
Magnus Dammcfdfa862008-02-22 19:55:05 +09001287 SMC_ACK_INT(lp, IM_ERCV_INT);
Frans Pop84d57bd2010-03-24 07:57:32 +00001288 PRINTK("%s: UNSUPPORTED: ERCV INTERRUPT\n", dev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001289 }
1290 } while (--timeout);
1291
1292 /* restore register states */
Magnus Dammcfdfa862008-02-22 19:55:05 +09001293 SMC_SET_PTR(lp, saved_pointer);
1294 SMC_SET_INT_MASK(lp, mask);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001295 spin_unlock(&lp->lock);
1296
Sonic Zhangc500cb22008-04-10 21:30:37 -07001297#ifndef CONFIG_NET_POLL_CONTROLLER
Nicolas Pitre5d0571d2005-11-17 14:02:48 -05001298 if (timeout == MAX_IRQ_LOOPS)
1299 PRINTK("%s: spurious interrupt (mask = 0x%02x)\n",
1300 dev->name, mask);
Sonic Zhangc500cb22008-04-10 21:30:37 -07001301#endif
Nicolas Pitre5d0571d2005-11-17 14:02:48 -05001302 DBG(3, "%s: Interrupt done (%d loops)\n",
1303 dev->name, MAX_IRQ_LOOPS - timeout);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001304
1305 /*
1306 * We return IRQ_HANDLED unconditionally here even if there was
1307 * nothing to do. There is a possibility that a packet might
1308 * get enqueued into the chip right after TX_EMPTY_INT is raised
1309 * but just before the CPU acknowledges the IRQ.
1310 * Better take an unneeded IRQ in some occasions than complexifying
1311 * the code for all cases.
1312 */
1313 return IRQ_HANDLED;
1314}
1315
1316#ifdef CONFIG_NET_POLL_CONTROLLER
1317/*
1318 * Polling receive - used by netconsole and other diagnostic tools
1319 * to allow network i/o with interrupts disabled.
1320 */
1321static void smc_poll_controller(struct net_device *dev)
1322{
1323 disable_irq(dev->irq);
Al Viro9c8e7f52006-10-07 16:29:18 +01001324 smc_interrupt(dev->irq, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001325 enable_irq(dev->irq);
1326}
1327#endif
1328
1329/* Our watchdog timed out. Called by the networking layer */
1330static void smc_timeout(struct net_device *dev)
1331{
1332 struct smc_local *lp = netdev_priv(dev);
1333 void __iomem *ioaddr = lp->base;
Nicolas Pitre8de90112005-04-12 16:21:11 -04001334 int status, mask, eph_st, meminfo, fifo;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001335
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07001336 DBG(2, "%s: %s\n", dev->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001337
1338 spin_lock_irq(&lp->lock);
Magnus Dammcfdfa862008-02-22 19:55:05 +09001339 status = SMC_GET_INT(lp);
1340 mask = SMC_GET_INT_MASK(lp);
1341 fifo = SMC_GET_FIFO(lp);
1342 SMC_SELECT_BANK(lp, 0);
1343 eph_st = SMC_GET_EPH_STATUS(lp);
1344 meminfo = SMC_GET_MIR(lp);
1345 SMC_SELECT_BANK(lp, 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001346 spin_unlock_irq(&lp->lock);
Nicolas Pitre8de90112005-04-12 16:21:11 -04001347 PRINTK( "%s: TX timeout (INT 0x%02x INTMASK 0x%02x "
1348 "MEM 0x%04x FIFO 0x%04x EPH_ST 0x%04x)\n",
1349 dev->name, status, mask, meminfo, fifo, eph_st );
Linus Torvalds1da177e2005-04-16 15:20:36 -07001350
1351 smc_reset(dev);
1352 smc_enable(dev);
1353
1354 /*
1355 * Reconfiguring the PHY doesn't seem like a bad idea here, but
1356 * smc_phy_configure() calls msleep() which calls schedule_timeout()
1357 * which calls schedule(). Hence we use a work queue.
1358 */
David S. Miller4bb073c2008-06-12 02:22:02 -07001359 if (lp->phy_type != 0)
1360 schedule_work(&lp->phy_configure);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001361
1362 /* We can accept TX packets again */
Eric Dumazet1ae5dc32010-05-10 05:01:31 -07001363 dev->trans_start = jiffies; /* prevent tx timeout */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001364 netif_wake_queue(dev);
1365}
1366
1367/*
1368 * This routine will, depending on the values passed to it,
1369 * either make it accept multicast packets, go into
1370 * promiscuous mode (for TCPDUMP and cousins) or accept
1371 * a select set of multicast packets
1372 */
1373static void smc_set_multicast_list(struct net_device *dev)
1374{
1375 struct smc_local *lp = netdev_priv(dev);
1376 void __iomem *ioaddr = lp->base;
1377 unsigned char multicast_table[8];
1378 int update_multicast = 0;
1379
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07001380 DBG(2, "%s: %s\n", dev->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001381
1382 if (dev->flags & IFF_PROMISC) {
1383 DBG(2, "%s: RCR_PRMS\n", dev->name);
1384 lp->rcr_cur_mode |= RCR_PRMS;
1385 }
1386
1387/* BUG? I never disable promiscuous mode if multicasting was turned on.
1388 Now, I turn off promiscuous mode, but I don't do anything to multicasting
1389 when promiscuous mode is turned on.
1390*/
1391
1392 /*
1393 * Here, I am setting this to accept all multicast packets.
1394 * I don't need to zero the multicast table, because the flag is
1395 * checked before the table is
1396 */
Jiri Pirko4cd24ea2010-02-08 04:30:35 +00001397 else if (dev->flags & IFF_ALLMULTI || netdev_mc_count(dev) > 16) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001398 DBG(2, "%s: RCR_ALMUL\n", dev->name);
1399 lp->rcr_cur_mode |= RCR_ALMUL;
1400 }
1401
1402 /*
1403 * This sets the internal hardware table to filter out unwanted
1404 * multicast packets before they take up memory.
1405 *
1406 * The SMC chip uses a hash table where the high 6 bits of the CRC of
1407 * address are the offset into the table. If that bit is 1, then the
1408 * multicast packet is accepted. Otherwise, it's dropped silently.
1409 *
1410 * To use the 6 bits as an offset into the table, the high 3 bits are
1411 * the number of the 8 bit register, while the low 3 bits are the bit
1412 * within that register.
1413 */
Jiri Pirko4cd24ea2010-02-08 04:30:35 +00001414 else if (!netdev_mc_empty(dev)) {
Jiri Pirko22bedad32010-04-01 21:22:57 +00001415 struct netdev_hw_addr *ha;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001416
1417 /* table for flipping the order of 3 bits */
1418 static const unsigned char invert3[] = {0, 4, 2, 6, 1, 5, 3, 7};
1419
1420 /* start with a table of all zeros: reject all */
1421 memset(multicast_table, 0, sizeof(multicast_table));
1422
Jiri Pirko22bedad32010-04-01 21:22:57 +00001423 netdev_for_each_mc_addr(ha, dev) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001424 int position;
1425
Linus Torvalds1da177e2005-04-16 15:20:36 -07001426 /* make sure this is a multicast address -
1427 shouldn't this be a given if we have it here ? */
Jiri Pirko22bedad32010-04-01 21:22:57 +00001428 if (!(*ha->addr & 1))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001429 continue;
1430
1431 /* only use the low order bits */
Jiri Pirko22bedad32010-04-01 21:22:57 +00001432 position = crc32_le(~0, ha->addr, 6) & 0x3f;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001433
1434 /* do some messy swapping to put the bit in the right spot */
1435 multicast_table[invert3[position&7]] |=
1436 (1<<invert3[(position>>3)&7]);
1437 }
1438
1439 /* be sure I get rid of flags I might have set */
1440 lp->rcr_cur_mode &= ~(RCR_PRMS | RCR_ALMUL);
1441
1442 /* now, the table can be loaded into the chipset */
1443 update_multicast = 1;
1444 } else {
1445 DBG(2, "%s: ~(RCR_PRMS|RCR_ALMUL)\n", dev->name);
1446 lp->rcr_cur_mode &= ~(RCR_PRMS | RCR_ALMUL);
1447
1448 /*
1449 * since I'm disabling all multicast entirely, I need to
1450 * clear the multicast list
1451 */
1452 memset(multicast_table, 0, sizeof(multicast_table));
1453 update_multicast = 1;
1454 }
1455
1456 spin_lock_irq(&lp->lock);
Magnus Dammcfdfa862008-02-22 19:55:05 +09001457 SMC_SELECT_BANK(lp, 0);
1458 SMC_SET_RCR(lp, lp->rcr_cur_mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001459 if (update_multicast) {
Magnus Dammcfdfa862008-02-22 19:55:05 +09001460 SMC_SELECT_BANK(lp, 3);
1461 SMC_SET_MCAST(lp, multicast_table);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001462 }
Magnus Dammcfdfa862008-02-22 19:55:05 +09001463 SMC_SELECT_BANK(lp, 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001464 spin_unlock_irq(&lp->lock);
1465}
1466
1467
1468/*
1469 * Open and Initialize the board
1470 *
1471 * Set up everything, reset the card, etc..
1472 */
1473static int
1474smc_open(struct net_device *dev)
1475{
1476 struct smc_local *lp = netdev_priv(dev);
1477
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07001478 DBG(2, "%s: %s\n", dev->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001479
1480 /*
1481 * Check that the address is valid. If its not, refuse
1482 * to bring the device up. The user must specify an
1483 * address using ifconfig eth0 hw ether xx:xx:xx:xx:xx:xx
1484 */
1485 if (!is_valid_ether_addr(dev->dev_addr)) {
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07001486 PRINTK("%s: no valid ethernet hw addr\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001487 return -EINVAL;
1488 }
1489
1490 /* Setup the default Register Modes */
1491 lp->tcr_cur_mode = TCR_DEFAULT;
1492 lp->rcr_cur_mode = RCR_DEFAULT;
Russell Kingb0dbcf52008-09-04 21:13:37 +01001493 lp->rpc_cur_mode = RPC_DEFAULT |
1494 lp->cfg.leda << RPC_LSXA_SHFT |
1495 lp->cfg.ledb << RPC_LSXB_SHFT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001496
1497 /*
1498 * If we are not using a MII interface, we need to
1499 * monitor our own carrier signal to detect faults.
1500 */
1501 if (lp->phy_type == 0)
1502 lp->tcr_cur_mode |= TCR_MON_CSN;
1503
1504 /* reset the hardware */
1505 smc_reset(dev);
1506 smc_enable(dev);
1507
1508 /* Configure the PHY, initialize the link state */
1509 if (lp->phy_type != 0)
David Howells6d5aefb2006-12-05 19:36:26 +00001510 smc_phy_configure(&lp->phy_configure);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001511 else {
1512 spin_lock_irq(&lp->lock);
1513 smc_10bt_check_media(dev, 1);
1514 spin_unlock_irq(&lp->lock);
1515 }
1516
1517 netif_start_queue(dev);
1518 return 0;
1519}
1520
1521/*
1522 * smc_close
1523 *
1524 * this makes the board clean up everything that it can
1525 * and not talk to the outside world. Caused by
1526 * an 'ifconfig ethX down'
1527 */
1528static int smc_close(struct net_device *dev)
1529{
1530 struct smc_local *lp = netdev_priv(dev);
1531
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07001532 DBG(2, "%s: %s\n", dev->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001533
1534 netif_stop_queue(dev);
1535 netif_carrier_off(dev);
1536
1537 /* clear everything */
1538 smc_shutdown(dev);
Nicolas Pitrebe836682005-06-19 23:56:21 -04001539 tasklet_kill(&lp->tx_task);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001540 smc_phy_powerdown(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001541 return 0;
1542}
1543
1544/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07001545 * Ethtool support
1546 */
1547static int
1548smc_ethtool_getsettings(struct net_device *dev, struct ethtool_cmd *cmd)
1549{
1550 struct smc_local *lp = netdev_priv(dev);
1551 int ret;
1552
1553 cmd->maxtxpkt = 1;
1554 cmd->maxrxpkt = 1;
1555
1556 if (lp->phy_type != 0) {
1557 spin_lock_irq(&lp->lock);
1558 ret = mii_ethtool_gset(&lp->mii, cmd);
1559 spin_unlock_irq(&lp->lock);
1560 } else {
1561 cmd->supported = SUPPORTED_10baseT_Half |
1562 SUPPORTED_10baseT_Full |
1563 SUPPORTED_TP | SUPPORTED_AUI;
1564
1565 if (lp->ctl_rspeed == 10)
1566 cmd->speed = SPEED_10;
1567 else if (lp->ctl_rspeed == 100)
1568 cmd->speed = SPEED_100;
1569
1570 cmd->autoneg = AUTONEG_DISABLE;
1571 cmd->transceiver = XCVR_INTERNAL;
1572 cmd->port = 0;
1573 cmd->duplex = lp->tcr_cur_mode & TCR_SWFDUP ? DUPLEX_FULL : DUPLEX_HALF;
1574
1575 ret = 0;
1576 }
1577
1578 return ret;
1579}
1580
1581static int
1582smc_ethtool_setsettings(struct net_device *dev, struct ethtool_cmd *cmd)
1583{
1584 struct smc_local *lp = netdev_priv(dev);
1585 int ret;
1586
1587 if (lp->phy_type != 0) {
1588 spin_lock_irq(&lp->lock);
1589 ret = mii_ethtool_sset(&lp->mii, cmd);
1590 spin_unlock_irq(&lp->lock);
1591 } else {
1592 if (cmd->autoneg != AUTONEG_DISABLE ||
1593 cmd->speed != SPEED_10 ||
1594 (cmd->duplex != DUPLEX_HALF && cmd->duplex != DUPLEX_FULL) ||
1595 (cmd->port != PORT_TP && cmd->port != PORT_AUI))
1596 return -EINVAL;
1597
1598// lp->port = cmd->port;
1599 lp->ctl_rfduplx = cmd->duplex == DUPLEX_FULL;
1600
1601// if (netif_running(dev))
1602// smc_set_port(dev);
1603
1604 ret = 0;
1605 }
1606
1607 return ret;
1608}
1609
1610static void
1611smc_ethtool_getdrvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1612{
1613 strncpy(info->driver, CARDNAME, sizeof(info->driver));
1614 strncpy(info->version, version, sizeof(info->version));
Kay Sieversdb1d7bf2009-01-26 21:12:58 -08001615 strncpy(info->bus_info, dev_name(dev->dev.parent), sizeof(info->bus_info));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001616}
1617
1618static int smc_ethtool_nwayreset(struct net_device *dev)
1619{
1620 struct smc_local *lp = netdev_priv(dev);
1621 int ret = -EINVAL;
1622
1623 if (lp->phy_type != 0) {
1624 spin_lock_irq(&lp->lock);
1625 ret = mii_nway_restart(&lp->mii);
1626 spin_unlock_irq(&lp->lock);
1627 }
1628
1629 return ret;
1630}
1631
1632static u32 smc_ethtool_getmsglevel(struct net_device *dev)
1633{
1634 struct smc_local *lp = netdev_priv(dev);
1635 return lp->msg_enable;
1636}
1637
1638static void smc_ethtool_setmsglevel(struct net_device *dev, u32 level)
1639{
1640 struct smc_local *lp = netdev_priv(dev);
1641 lp->msg_enable = level;
1642}
1643
Vernon Sauder357fe2c2009-01-16 13:23:19 +00001644static int smc_write_eeprom_word(struct net_device *dev, u16 addr, u16 word)
1645{
1646 u16 ctl;
1647 struct smc_local *lp = netdev_priv(dev);
1648 void __iomem *ioaddr = lp->base;
1649
1650 spin_lock_irq(&lp->lock);
1651 /* load word into GP register */
1652 SMC_SELECT_BANK(lp, 1);
1653 SMC_SET_GP(lp, word);
1654 /* set the address to put the data in EEPROM */
1655 SMC_SELECT_BANK(lp, 2);
1656 SMC_SET_PTR(lp, addr);
1657 /* tell it to write */
1658 SMC_SELECT_BANK(lp, 1);
1659 ctl = SMC_GET_CTL(lp);
1660 SMC_SET_CTL(lp, ctl | (CTL_EEPROM_SELECT | CTL_STORE));
1661 /* wait for it to finish */
1662 do {
1663 udelay(1);
1664 } while (SMC_GET_CTL(lp) & CTL_STORE);
1665 /* clean up */
1666 SMC_SET_CTL(lp, ctl);
1667 SMC_SELECT_BANK(lp, 2);
1668 spin_unlock_irq(&lp->lock);
1669 return 0;
1670}
1671
1672static int smc_read_eeprom_word(struct net_device *dev, u16 addr, u16 *word)
1673{
1674 u16 ctl;
1675 struct smc_local *lp = netdev_priv(dev);
1676 void __iomem *ioaddr = lp->base;
1677
1678 spin_lock_irq(&lp->lock);
1679 /* set the EEPROM address to get the data from */
1680 SMC_SELECT_BANK(lp, 2);
1681 SMC_SET_PTR(lp, addr | PTR_READ);
1682 /* tell it to load */
1683 SMC_SELECT_BANK(lp, 1);
1684 SMC_SET_GP(lp, 0xffff); /* init to known */
1685 ctl = SMC_GET_CTL(lp);
1686 SMC_SET_CTL(lp, ctl | (CTL_EEPROM_SELECT | CTL_RELOAD));
1687 /* wait for it to finish */
1688 do {
1689 udelay(1);
1690 } while (SMC_GET_CTL(lp) & CTL_RELOAD);
1691 /* read word from GP register */
1692 *word = SMC_GET_GP(lp);
1693 /* clean up */
1694 SMC_SET_CTL(lp, ctl);
1695 SMC_SELECT_BANK(lp, 2);
1696 spin_unlock_irq(&lp->lock);
1697 return 0;
1698}
1699
1700static int smc_ethtool_geteeprom_len(struct net_device *dev)
1701{
1702 return 0x23 * 2;
1703}
1704
1705static int smc_ethtool_geteeprom(struct net_device *dev,
1706 struct ethtool_eeprom *eeprom, u8 *data)
1707{
1708 int i;
1709 int imax;
1710
1711 DBG(1, "Reading %d bytes at %d(0x%x)\n",
1712 eeprom->len, eeprom->offset, eeprom->offset);
1713 imax = smc_ethtool_geteeprom_len(dev);
1714 for (i = 0; i < eeprom->len; i += 2) {
1715 int ret;
1716 u16 wbuf;
1717 int offset = i + eeprom->offset;
1718 if (offset > imax)
1719 break;
1720 ret = smc_read_eeprom_word(dev, offset >> 1, &wbuf);
1721 if (ret != 0)
1722 return ret;
1723 DBG(2, "Read 0x%x from 0x%x\n", wbuf, offset >> 1);
1724 data[i] = (wbuf >> 8) & 0xff;
1725 data[i+1] = wbuf & 0xff;
1726 }
1727 return 0;
1728}
1729
1730static int smc_ethtool_seteeprom(struct net_device *dev,
1731 struct ethtool_eeprom *eeprom, u8 *data)
1732{
1733 int i;
1734 int imax;
1735
1736 DBG(1, "Writing %d bytes to %d(0x%x)\n",
1737 eeprom->len, eeprom->offset, eeprom->offset);
1738 imax = smc_ethtool_geteeprom_len(dev);
1739 for (i = 0; i < eeprom->len; i += 2) {
1740 int ret;
1741 u16 wbuf;
1742 int offset = i + eeprom->offset;
1743 if (offset > imax)
1744 break;
1745 wbuf = (data[i] << 8) | data[i + 1];
1746 DBG(2, "Writing 0x%x to 0x%x\n", wbuf, offset >> 1);
1747 ret = smc_write_eeprom_word(dev, offset >> 1, wbuf);
1748 if (ret != 0)
1749 return ret;
1750 }
1751 return 0;
1752}
1753
1754
Jeff Garzik7282d492006-09-13 14:30:00 -04001755static const struct ethtool_ops smc_ethtool_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001756 .get_settings = smc_ethtool_getsettings,
1757 .set_settings = smc_ethtool_setsettings,
1758 .get_drvinfo = smc_ethtool_getdrvinfo,
1759
1760 .get_msglevel = smc_ethtool_getmsglevel,
1761 .set_msglevel = smc_ethtool_setmsglevel,
1762 .nway_reset = smc_ethtool_nwayreset,
1763 .get_link = ethtool_op_get_link,
Vernon Sauder357fe2c2009-01-16 13:23:19 +00001764 .get_eeprom_len = smc_ethtool_geteeprom_len,
1765 .get_eeprom = smc_ethtool_geteeprom,
1766 .set_eeprom = smc_ethtool_seteeprom,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001767};
1768
Magnus Damma5280792009-01-26 21:32:25 -08001769static const struct net_device_ops smc_netdev_ops = {
1770 .ndo_open = smc_open,
1771 .ndo_stop = smc_close,
1772 .ndo_start_xmit = smc_hard_start_xmit,
1773 .ndo_tx_timeout = smc_timeout,
1774 .ndo_set_multicast_list = smc_set_multicast_list,
Ben Hutchings635ecaa2009-07-09 17:59:01 +00001775 .ndo_change_mtu = eth_change_mtu,
Magnus Damma5280792009-01-26 21:32:25 -08001776 .ndo_validate_addr = eth_validate_addr,
1777 .ndo_set_mac_address = eth_mac_addr,
1778#ifdef CONFIG_NET_POLL_CONTROLLER
1779 .ndo_poll_controller = smc_poll_controller,
1780#endif
1781};
1782
Linus Torvalds1da177e2005-04-16 15:20:36 -07001783/*
1784 * smc_findirq
1785 *
1786 * This routine has a simple purpose -- make the SMC chip generate an
1787 * interrupt, so an auto-detect routine can detect it, and find the IRQ,
1788 */
1789/*
1790 * does this still work?
1791 *
1792 * I just deleted auto_irq.c, since it was never built...
1793 * --jgarzik
1794 */
Al Virof57628d2008-11-22 17:36:14 +00001795static int __devinit smc_findirq(struct smc_local *lp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001796{
Magnus Dammcfdfa862008-02-22 19:55:05 +09001797 void __iomem *ioaddr = lp->base;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001798 int timeout = 20;
1799 unsigned long cookie;
1800
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07001801 DBG(2, "%s: %s\n", CARDNAME, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001802
1803 cookie = probe_irq_on();
1804
1805 /*
1806 * What I try to do here is trigger an ALLOC_INT. This is done
1807 * by allocating a small chunk of memory, which will give an interrupt
1808 * when done.
1809 */
1810 /* enable ALLOCation interrupts ONLY */
Magnus Dammcfdfa862008-02-22 19:55:05 +09001811 SMC_SELECT_BANK(lp, 2);
1812 SMC_SET_INT_MASK(lp, IM_ALLOC_INT);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001813
1814 /*
1815 * Allocate 512 bytes of memory. Note that the chip was just
1816 * reset so all the memory is available
1817 */
Magnus Dammcfdfa862008-02-22 19:55:05 +09001818 SMC_SET_MMU_CMD(lp, MC_ALLOC | 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001819
1820 /*
1821 * Wait until positive that the interrupt has been generated
1822 */
1823 do {
1824 int int_status;
1825 udelay(10);
Magnus Dammcfdfa862008-02-22 19:55:05 +09001826 int_status = SMC_GET_INT(lp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001827 if (int_status & IM_ALLOC_INT)
1828 break; /* got the interrupt */
1829 } while (--timeout);
1830
1831 /*
1832 * there is really nothing that I can do here if timeout fails,
1833 * as autoirq_report will return a 0 anyway, which is what I
1834 * want in this case. Plus, the clean up is needed in both
1835 * cases.
1836 */
1837
1838 /* and disable all interrupts again */
Magnus Dammcfdfa862008-02-22 19:55:05 +09001839 SMC_SET_INT_MASK(lp, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001840
1841 /* and return what I found */
1842 return probe_irq_off(cookie);
1843}
1844
1845/*
1846 * Function: smc_probe(unsigned long ioaddr)
1847 *
1848 * Purpose:
1849 * Tests to see if a given ioaddr points to an SMC91x chip.
1850 * Returns a 0 on success
1851 *
1852 * Algorithm:
1853 * (1) see if the high byte of BANK_SELECT is 0x33
1854 * (2) compare the ioaddr with the base register's address
1855 * (3) see if I recognize the chip ID in the appropriate register
1856 *
1857 * Here I do typical initialization tasks.
1858 *
1859 * o Initialize the structure if needed
1860 * o print out my vanity message if not done so already
1861 * o print out what type of hardware is detected
1862 * o print out the ethernet address
1863 * o find the IRQ
1864 * o set up my private data
1865 * o configure the dev structure with my subroutines
1866 * o actually GRAB the irq.
1867 * o GRAB the region
1868 */
Al Virof57628d2008-11-22 17:36:14 +00001869static int __devinit smc_probe(struct net_device *dev, void __iomem *ioaddr,
Russell Kinge7b3dc72008-01-14 22:30:10 +00001870 unsigned long irq_flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001871{
1872 struct smc_local *lp = netdev_priv(dev);
1873 static int version_printed = 0;
Joe Perches0795af52007-10-03 17:59:30 -07001874 int retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001875 unsigned int val, revision_register;
1876 const char *version_string;
1877
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07001878 DBG(2, "%s: %s\n", CARDNAME, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001879
1880 /* First, see if the high byte is 0x33 */
Magnus Dammcfdfa862008-02-22 19:55:05 +09001881 val = SMC_CURRENT_BANK(lp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001882 DBG(2, "%s: bank signature probe returned 0x%04x\n", CARDNAME, val);
1883 if ((val & 0xFF00) != 0x3300) {
1884 if ((val & 0xFF) == 0x33) {
1885 printk(KERN_WARNING
1886 "%s: Detected possible byte-swapped interface"
1887 " at IOADDR %p\n", CARDNAME, ioaddr);
1888 }
1889 retval = -ENODEV;
1890 goto err_out;
1891 }
1892
1893 /*
1894 * The above MIGHT indicate a device, but I need to write to
1895 * further test this.
1896 */
Magnus Dammcfdfa862008-02-22 19:55:05 +09001897 SMC_SELECT_BANK(lp, 0);
1898 val = SMC_CURRENT_BANK(lp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001899 if ((val & 0xFF00) != 0x3300) {
1900 retval = -ENODEV;
1901 goto err_out;
1902 }
1903
1904 /*
1905 * well, we've already written once, so hopefully another
1906 * time won't hurt. This time, I need to switch the bank
1907 * register to bank 1, so I can access the base address
1908 * register
1909 */
Magnus Dammcfdfa862008-02-22 19:55:05 +09001910 SMC_SELECT_BANK(lp, 1);
1911 val = SMC_GET_BASE(lp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001912 val = ((val & 0x1F00) >> 3) << SMC_IO_SHIFT;
Nicolas Pitre53155102005-05-12 20:18:19 -04001913 if (((unsigned int)ioaddr & (0x3e0 << SMC_IO_SHIFT)) != val) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001914 printk("%s: IOADDR %p doesn't match configuration (%x).\n",
1915 CARDNAME, ioaddr, val);
1916 }
1917
1918 /*
1919 * check if the revision register is something that I
1920 * recognize. These might need to be added to later,
1921 * as future revisions could be added.
1922 */
Magnus Dammcfdfa862008-02-22 19:55:05 +09001923 SMC_SELECT_BANK(lp, 3);
1924 revision_register = SMC_GET_REV(lp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001925 DBG(2, "%s: revision = 0x%04x\n", CARDNAME, revision_register);
1926 version_string = chip_ids[ (revision_register >> 4) & 0xF];
1927 if (!version_string || (revision_register & 0xff00) != 0x3300) {
1928 /* I don't recognize this chip, so... */
1929 printk("%s: IO %p: Unrecognized revision register 0x%04x"
1930 ", Contact author.\n", CARDNAME,
1931 ioaddr, revision_register);
1932
1933 retval = -ENODEV;
1934 goto err_out;
1935 }
1936
1937 /* At this point I'll assume that the chip is an SMC91x. */
1938 if (version_printed++ == 0)
1939 printk("%s", version);
1940
1941 /* fill in some of the fields */
1942 dev->base_addr = (unsigned long)ioaddr;
1943 lp->base = ioaddr;
1944 lp->version = revision_register & 0xff;
1945 spin_lock_init(&lp->lock);
1946
1947 /* Get the MAC address */
Magnus Dammcfdfa862008-02-22 19:55:05 +09001948 SMC_SELECT_BANK(lp, 1);
1949 SMC_GET_MAC_ADDR(lp, dev->dev_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001950
1951 /* now, reset the chip, and put it into a known state */
1952 smc_reset(dev);
1953
1954 /*
1955 * If dev->irq is 0, then the device has to be banged on to see
1956 * what the IRQ is.
1957 *
1958 * This banging doesn't always detect the IRQ, for unknown reasons.
1959 * a workaround is to reset the chip and try again.
1960 *
1961 * Interestingly, the DOS packet driver *SETS* the IRQ on the card to
1962 * be what is requested on the command line. I don't do that, mostly
1963 * because the card that I have uses a non-standard method of accessing
1964 * the IRQs, and because this _should_ work in most configurations.
1965 *
1966 * Specifying an IRQ is done with the assumption that the user knows
1967 * what (s)he is doing. No checking is done!!!!
1968 */
1969 if (dev->irq < 1) {
1970 int trials;
1971
1972 trials = 3;
1973 while (trials--) {
Magnus Dammcfdfa862008-02-22 19:55:05 +09001974 dev->irq = smc_findirq(lp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001975 if (dev->irq)
1976 break;
1977 /* kick the card and try again */
1978 smc_reset(dev);
1979 }
1980 }
1981 if (dev->irq == 0) {
1982 printk("%s: Couldn't autodetect your IRQ. Use irq=xx.\n",
1983 dev->name);
1984 retval = -ENODEV;
1985 goto err_out;
1986 }
1987 dev->irq = irq_canonicalize(dev->irq);
1988
1989 /* Fill in the fields of the device structure with ethernet values. */
1990 ether_setup(dev);
1991
Linus Torvalds1da177e2005-04-16 15:20:36 -07001992 dev->watchdog_timeo = msecs_to_jiffies(watchdog);
Magnus Damma5280792009-01-26 21:32:25 -08001993 dev->netdev_ops = &smc_netdev_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001994 dev->ethtool_ops = &smc_ethtool_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001995
1996 tasklet_init(&lp->tx_task, smc_hardware_send_pkt, (unsigned long)dev);
David Howells6d5aefb2006-12-05 19:36:26 +00001997 INIT_WORK(&lp->phy_configure, smc_phy_configure);
1998 lp->dev = dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001999 lp->mii.phy_id_mask = 0x1f;
2000 lp->mii.reg_num_mask = 0x1f;
2001 lp->mii.force_media = 0;
2002 lp->mii.full_duplex = 0;
2003 lp->mii.dev = dev;
2004 lp->mii.mdio_read = smc_phy_read;
2005 lp->mii.mdio_write = smc_phy_write;
2006
2007 /*
2008 * Locate the phy, if any.
2009 */
2010 if (lp->version >= (CHIP_91100 << 4))
2011 smc_phy_detect(dev);
2012
Nicolas Pitre99e1baf2005-10-05 11:10:24 -04002013 /* then shut everything down to save power */
2014 smc_shutdown(dev);
2015 smc_phy_powerdown(dev);
2016
Linus Torvalds1da177e2005-04-16 15:20:36 -07002017 /* Set default parameters */
2018 lp->msg_enable = NETIF_MSG_LINK;
2019 lp->ctl_rfduplx = 0;
2020 lp->ctl_rspeed = 10;
2021
2022 if (lp->version >= (CHIP_91100 << 4)) {
2023 lp->ctl_rfduplx = 1;
2024 lp->ctl_rspeed = 100;
2025 }
2026
2027 /* Grab the IRQ */
Joe Perchesa0607fd2009-11-18 23:29:17 -08002028 retval = request_irq(dev->irq, smc_interrupt, irq_flags, dev->name, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002029 if (retval)
2030 goto err_out;
2031
Eric Miao52256c02008-06-24 15:36:05 +08002032#ifdef CONFIG_ARCH_PXA
2033# ifdef SMC_USE_PXA_DMA
2034 lp->cfg.flags |= SMC91X_USE_DMA;
2035# endif
2036 if (lp->cfg.flags & SMC91X_USE_DMA) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002037 int dma = pxa_request_dma(dev->name, DMA_PRIO_LOW,
2038 smc_pxa_dma_irq, NULL);
2039 if (dma >= 0)
2040 dev->dma = dma;
2041 }
2042#endif
2043
2044 retval = register_netdev(dev);
2045 if (retval == 0) {
2046 /* now, print out the card info, in a short format.. */
2047 printk("%s: %s (rev %d) at %p IRQ %d",
2048 dev->name, version_string, revision_register & 0x0f,
2049 lp->base, dev->irq);
2050
2051 if (dev->dma != (unsigned char)-1)
2052 printk(" DMA %d", dev->dma);
2053
Magnus Dammd6bc3722008-09-08 14:02:56 +09002054 printk("%s%s\n",
2055 lp->cfg.flags & SMC91X_NOWAIT ? " [nowait]" : "",
Linus Torvalds1da177e2005-04-16 15:20:36 -07002056 THROTTLE_TX_PKTS ? " [throttle_tx]" : "");
2057
2058 if (!is_valid_ether_addr(dev->dev_addr)) {
2059 printk("%s: Invalid ethernet MAC address. Please "
2060 "set using ifconfig\n", dev->name);
2061 } else {
2062 /* Print the Ethernet address */
Johannes Berge1749612008-10-27 15:59:26 -07002063 printk("%s: Ethernet addr: %pM\n",
2064 dev->name, dev->dev_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002065 }
2066
2067 if (lp->phy_type == 0) {
2068 PRINTK("%s: No PHY found\n", dev->name);
2069 } else if ((lp->phy_type & 0xfffffff0) == 0x0016f840) {
2070 PRINTK("%s: PHY LAN83C183 (LAN91C111 Internal)\n", dev->name);
2071 } else if ((lp->phy_type & 0xfffffff0) == 0x02821c50) {
2072 PRINTK("%s: PHY LAN83C180\n", dev->name);
2073 }
2074 }
2075
2076err_out:
Eric Miao52256c02008-06-24 15:36:05 +08002077#ifdef CONFIG_ARCH_PXA
Linus Torvalds1da177e2005-04-16 15:20:36 -07002078 if (retval && dev->dma != (unsigned char)-1)
2079 pxa_free_dma(dev->dma);
2080#endif
2081 return retval;
2082}
2083
2084static int smc_enable_device(struct platform_device *pdev)
2085{
Magnus Damm3e947942008-02-22 19:55:15 +09002086 struct net_device *ndev = platform_get_drvdata(pdev);
2087 struct smc_local *lp = netdev_priv(ndev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002088 unsigned long flags;
2089 unsigned char ecor, ecsr;
2090 void __iomem *addr;
2091 struct resource * res;
2092
2093 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-attrib");
2094 if (!res)
2095 return 0;
2096
2097 /*
2098 * Map the attribute space. This is overkill, but clean.
2099 */
2100 addr = ioremap(res->start, ATTRIB_SIZE);
2101 if (!addr)
2102 return -ENOMEM;
2103
2104 /*
2105 * Reset the device. We must disable IRQs around this
2106 * since a reset causes the IRQ line become active.
2107 */
2108 local_irq_save(flags);
2109 ecor = readb(addr + (ECOR << SMC_IO_SHIFT)) & ~ECOR_RESET;
2110 writeb(ecor | ECOR_RESET, addr + (ECOR << SMC_IO_SHIFT));
2111 readb(addr + (ECOR << SMC_IO_SHIFT));
2112
2113 /*
2114 * Wait 100us for the chip to reset.
2115 */
2116 udelay(100);
2117
2118 /*
2119 * The device will ignore all writes to the enable bit while
2120 * reset is asserted, even if the reset bit is cleared in the
2121 * same write. Must clear reset first, then enable the device.
2122 */
2123 writeb(ecor, addr + (ECOR << SMC_IO_SHIFT));
2124 writeb(ecor | ECOR_ENABLE, addr + (ECOR << SMC_IO_SHIFT));
2125
2126 /*
2127 * Set the appropriate byte/word mode.
2128 */
2129 ecsr = readb(addr + (ECSR << SMC_IO_SHIFT)) & ~ECSR_IOIS8;
Magnus Damm3e947942008-02-22 19:55:15 +09002130 if (!SMC_16BIT(lp))
Nicolas Pitre09779c62006-03-20 11:54:27 -05002131 ecsr |= ECSR_IOIS8;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002132 writeb(ecsr, addr + (ECSR << SMC_IO_SHIFT));
2133 local_irq_restore(flags);
2134
2135 iounmap(addr);
2136
2137 /*
2138 * Wait for the chip to wake up. We could poll the control
2139 * register in the main register space, but that isn't mapped
2140 * yet. We know this is going to take 750us.
2141 */
2142 msleep(1);
2143
2144 return 0;
2145}
2146
Eric Miao15919882008-06-24 13:38:50 +08002147static int smc_request_attrib(struct platform_device *pdev,
2148 struct net_device *ndev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002149{
2150 struct resource * res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-attrib");
David S. Miller55c8eb62008-11-03 00:04:24 -08002151 struct smc_local *lp __maybe_unused = netdev_priv(ndev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002152
2153 if (!res)
2154 return 0;
2155
2156 if (!request_mem_region(res->start, ATTRIB_SIZE, CARDNAME))
2157 return -EBUSY;
2158
2159 return 0;
2160}
2161
Eric Miao15919882008-06-24 13:38:50 +08002162static void smc_release_attrib(struct platform_device *pdev,
2163 struct net_device *ndev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002164{
2165 struct resource * res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-attrib");
David S. Miller55c8eb62008-11-03 00:04:24 -08002166 struct smc_local *lp __maybe_unused = netdev_priv(ndev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002167
2168 if (res)
2169 release_mem_region(res->start, ATTRIB_SIZE);
2170}
2171
Nicolas Pitre09779c62006-03-20 11:54:27 -05002172static inline void smc_request_datacs(struct platform_device *pdev, struct net_device *ndev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002173{
Nicolas Pitre09779c62006-03-20 11:54:27 -05002174 if (SMC_CAN_USE_DATACS) {
2175 struct resource * res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-data32");
2176 struct smc_local *lp = netdev_priv(ndev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002177
Nicolas Pitre09779c62006-03-20 11:54:27 -05002178 if (!res)
2179 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002180
Nicolas Pitre09779c62006-03-20 11:54:27 -05002181 if(!request_mem_region(res->start, SMC_DATA_EXTENT, CARDNAME)) {
2182 printk(KERN_INFO "%s: failed to request datacs memory region.\n", CARDNAME);
2183 return;
2184 }
2185
2186 lp->datacs = ioremap(res->start, SMC_DATA_EXTENT);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002187 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002188}
2189
2190static void smc_release_datacs(struct platform_device *pdev, struct net_device *ndev)
2191{
Nicolas Pitre09779c62006-03-20 11:54:27 -05002192 if (SMC_CAN_USE_DATACS) {
2193 struct smc_local *lp = netdev_priv(ndev);
2194 struct resource * res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-data32");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002195
Nicolas Pitre09779c62006-03-20 11:54:27 -05002196 if (lp->datacs)
2197 iounmap(lp->datacs);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002198
Nicolas Pitre09779c62006-03-20 11:54:27 -05002199 lp->datacs = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002200
Nicolas Pitre09779c62006-03-20 11:54:27 -05002201 if (res)
2202 release_mem_region(res->start, SMC_DATA_EXTENT);
2203 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002204}
Linus Torvalds1da177e2005-04-16 15:20:36 -07002205
2206/*
2207 * smc_init(void)
2208 * Input parameters:
2209 * dev->base_addr == 0, try to find all possible locations
2210 * dev->base_addr > 0x1ff, this is the address to check
2211 * dev->base_addr == <anything else>, return failure code
2212 *
2213 * Output:
2214 * 0 --> there is a device
2215 * anything else, error
2216 */
Al Virof57628d2008-11-22 17:36:14 +00002217static int __devinit smc_drv_probe(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002218{
Magnus Damm3e947942008-02-22 19:55:15 +09002219 struct smc91x_platdata *pd = pdev->dev.platform_data;
2220 struct smc_local *lp;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002221 struct net_device *ndev;
Russell Kinge7b3dc72008-01-14 22:30:10 +00002222 struct resource *res, *ires;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002223 unsigned int __iomem *addr;
Eric Miaod280ead2008-06-06 17:13:02 +08002224 unsigned long irq_flags = SMC_IRQ_FLAGS;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002225 int ret;
2226
Linus Torvalds1da177e2005-04-16 15:20:36 -07002227 ndev = alloc_etherdev(sizeof(struct smc_local));
2228 if (!ndev) {
2229 printk("%s: could not allocate device.\n", CARDNAME);
2230 ret = -ENOMEM;
Eric Miao15919882008-06-24 13:38:50 +08002231 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002232 }
Russell King3ae5eae2005-11-09 22:32:44 +00002233 SET_NETDEV_DEV(ndev, &pdev->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002234
Magnus Damm3e947942008-02-22 19:55:15 +09002235 /* get configuration from platform data, only allow use of
2236 * bus width if both SMC_CAN_USE_xxx and SMC91X_USE_xxx are set.
2237 */
2238
2239 lp = netdev_priv(ndev);
Magnus Damm3e947942008-02-22 19:55:15 +09002240
Eric Miao15919882008-06-24 13:38:50 +08002241 if (pd) {
Magnus Damm3e947942008-02-22 19:55:15 +09002242 memcpy(&lp->cfg, pd, sizeof(lp->cfg));
Eric Miao15919882008-06-24 13:38:50 +08002243 lp->io_shift = SMC91X_IO_SHIFT(lp->cfg.flags);
2244 } else {
Eric Miaofa6d3be2008-06-19 17:19:57 +08002245 lp->cfg.flags |= (SMC_CAN_USE_8BIT) ? SMC91X_USE_8BIT : 0;
2246 lp->cfg.flags |= (SMC_CAN_USE_16BIT) ? SMC91X_USE_16BIT : 0;
2247 lp->cfg.flags |= (SMC_CAN_USE_32BIT) ? SMC91X_USE_32BIT : 0;
Eric Miaoc4f0e762008-06-19 17:39:03 +08002248 lp->cfg.flags |= (nowait) ? SMC91X_NOWAIT : 0;
Magnus Damm3e947942008-02-22 19:55:15 +09002249 }
2250
Russell Kingb0dbcf52008-09-04 21:13:37 +01002251 if (!lp->cfg.leda && !lp->cfg.ledb) {
2252 lp->cfg.leda = RPC_LSA_DEFAULT;
2253 lp->cfg.ledb = RPC_LSB_DEFAULT;
2254 }
2255
Linus Torvalds1da177e2005-04-16 15:20:36 -07002256 ndev->dma = (unsigned char)-1;
Russell Kinge7b3dc72008-01-14 22:30:10 +00002257
Eric Miao15919882008-06-24 13:38:50 +08002258 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-regs");
2259 if (!res)
2260 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2261 if (!res) {
2262 ret = -ENODEV;
2263 goto out_free_netdev;
2264 }
2265
2266
2267 if (!request_mem_region(res->start, SMC_IO_EXTENT, CARDNAME)) {
2268 ret = -EBUSY;
2269 goto out_free_netdev;
2270 }
2271
Russell Kinge7b3dc72008-01-14 22:30:10 +00002272 ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
2273 if (!ires) {
David Vrabel48944732006-01-19 17:56:29 +00002274 ret = -ENODEV;
Eric Miao15919882008-06-24 13:38:50 +08002275 goto out_release_io;
David Vrabel48944732006-01-19 17:56:29 +00002276 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002277
Russell Kinge7b3dc72008-01-14 22:30:10 +00002278 ndev->irq = ires->start;
Eric Miaod280ead2008-06-06 17:13:02 +08002279
Russell King - ARM Linuxd5ccd672009-11-28 00:13:23 +00002280 if (irq_flags == -1 || ires->flags & IRQF_TRIGGER_MASK)
Eric Miaod280ead2008-06-06 17:13:02 +08002281 irq_flags = ires->flags & IRQF_TRIGGER_MASK;
Russell Kinge7b3dc72008-01-14 22:30:10 +00002282
Eric Miao15919882008-06-24 13:38:50 +08002283 ret = smc_request_attrib(pdev, ndev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002284 if (ret)
Eric Miao15919882008-06-24 13:38:50 +08002285 goto out_release_io;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002286#if defined(CONFIG_SA1100_ASSABET)
2287 NCR_0 |= NCR_ENET_OSC_EN;
2288#endif
Magnus Damm3e947942008-02-22 19:55:15 +09002289 platform_set_drvdata(pdev, ndev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002290 ret = smc_enable_device(pdev);
2291 if (ret)
2292 goto out_release_attrib;
2293
2294 addr = ioremap(res->start, SMC_IO_EXTENT);
2295 if (!addr) {
2296 ret = -ENOMEM;
2297 goto out_release_attrib;
2298 }
2299
Eric Miao52256c02008-06-24 15:36:05 +08002300#ifdef CONFIG_ARCH_PXA
Russell King073ac8f2007-09-01 21:27:18 +01002301 {
2302 struct smc_local *lp = netdev_priv(ndev);
2303 lp->device = &pdev->dev;
2304 lp->physaddr = res->start;
2305 }
2306#endif
2307
Eric Miaod280ead2008-06-06 17:13:02 +08002308 ret = smc_probe(ndev, addr, irq_flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002309 if (ret != 0)
2310 goto out_iounmap;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002311
2312 smc_request_datacs(pdev, ndev);
2313
2314 return 0;
2315
2316 out_iounmap:
Russell King3ae5eae2005-11-09 22:32:44 +00002317 platform_set_drvdata(pdev, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002318 iounmap(addr);
2319 out_release_attrib:
Eric Miao15919882008-06-24 13:38:50 +08002320 smc_release_attrib(pdev, ndev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002321 out_release_io:
2322 release_mem_region(res->start, SMC_IO_EXTENT);
Eric Miao15919882008-06-24 13:38:50 +08002323 out_free_netdev:
2324 free_netdev(ndev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002325 out:
2326 printk("%s: not found (%d).\n", CARDNAME, ret);
2327
2328 return ret;
2329}
2330
Al Virof57628d2008-11-22 17:36:14 +00002331static int __devexit smc_drv_remove(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002332{
Russell King3ae5eae2005-11-09 22:32:44 +00002333 struct net_device *ndev = platform_get_drvdata(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002334 struct smc_local *lp = netdev_priv(ndev);
2335 struct resource *res;
2336
Russell King3ae5eae2005-11-09 22:32:44 +00002337 platform_set_drvdata(pdev, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002338
2339 unregister_netdev(ndev);
2340
2341 free_irq(ndev->irq, ndev);
2342
Eric Miao52256c02008-06-24 15:36:05 +08002343#ifdef CONFIG_ARCH_PXA
Linus Torvalds1da177e2005-04-16 15:20:36 -07002344 if (ndev->dma != (unsigned char)-1)
2345 pxa_free_dma(ndev->dma);
2346#endif
2347 iounmap(lp->base);
2348
2349 smc_release_datacs(pdev,ndev);
Eric Miao15919882008-06-24 13:38:50 +08002350 smc_release_attrib(pdev,ndev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002351
2352 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-regs");
2353 if (!res)
Jeff Garzik6fc30db2008-08-27 05:54:30 -04002354 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002355 release_mem_region(res->start, SMC_IO_EXTENT);
2356
2357 free_netdev(ndev);
2358
2359 return 0;
2360}
2361
Kevin Hilman9f950f72009-11-24 12:57:47 +00002362static int smc_drv_suspend(struct device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002363{
Kevin Hilman9f950f72009-11-24 12:57:47 +00002364 struct platform_device *pdev = to_platform_device(dev);
2365 struct net_device *ndev = platform_get_drvdata(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002366
Russell King9480e302005-10-28 09:52:56 -07002367 if (ndev) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002368 if (netif_running(ndev)) {
2369 netif_device_detach(ndev);
2370 smc_shutdown(ndev);
2371 smc_phy_powerdown(ndev);
2372 }
2373 }
2374 return 0;
2375}
2376
Kevin Hilman9f950f72009-11-24 12:57:47 +00002377static int smc_drv_resume(struct device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002378{
Kevin Hilman9f950f72009-11-24 12:57:47 +00002379 struct platform_device *pdev = to_platform_device(dev);
2380 struct net_device *ndev = platform_get_drvdata(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002381
Russell King9480e302005-10-28 09:52:56 -07002382 if (ndev) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002383 struct smc_local *lp = netdev_priv(ndev);
Paul Mundt5fc34412009-12-10 20:42:27 +00002384 smc_enable_device(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002385 if (netif_running(ndev)) {
2386 smc_reset(ndev);
2387 smc_enable(ndev);
2388 if (lp->phy_type != 0)
David Howells6d5aefb2006-12-05 19:36:26 +00002389 smc_phy_configure(&lp->phy_configure);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002390 netif_device_attach(ndev);
2391 }
2392 }
2393 return 0;
2394}
2395
Kevin Hilman9f950f72009-11-24 12:57:47 +00002396static struct dev_pm_ops smc_drv_pm_ops = {
2397 .suspend = smc_drv_suspend,
2398 .resume = smc_drv_resume,
2399};
2400
Russell King3ae5eae2005-11-09 22:32:44 +00002401static struct platform_driver smc_driver = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002402 .probe = smc_drv_probe,
Al Virof57628d2008-11-22 17:36:14 +00002403 .remove = __devexit_p(smc_drv_remove),
Russell King3ae5eae2005-11-09 22:32:44 +00002404 .driver = {
2405 .name = CARDNAME,
Kay Sievers72abb462008-04-18 13:50:44 -07002406 .owner = THIS_MODULE,
Kevin Hilman9f950f72009-11-24 12:57:47 +00002407 .pm = &smc_drv_pm_ops,
Russell King3ae5eae2005-11-09 22:32:44 +00002408 },
Linus Torvalds1da177e2005-04-16 15:20:36 -07002409};
2410
2411static int __init smc_init(void)
2412{
Russell King3ae5eae2005-11-09 22:32:44 +00002413 return platform_driver_register(&smc_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002414}
2415
2416static void __exit smc_cleanup(void)
2417{
Russell King3ae5eae2005-11-09 22:32:44 +00002418 platform_driver_unregister(&smc_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002419}
2420
2421module_init(smc_init);
2422module_exit(smc_cleanup);