blob: 43654a3bb0ec81591cb6d55302b984fab7782066 [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>
David Howells476c32c2010-10-07 14:08:54 +010075#include <linux/irq.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070076#include <linux/errno.h>
77#include <linux/ioport.h>
78#include <linux/crc32.h>
Russell Kingd052d1b2005-10-29 19:07:23 +010079#include <linux/platform_device.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070080#include <linux/spinlock.h>
81#include <linux/ethtool.h>
82#include <linux/mii.h>
83#include <linux/workqueue.h>
Thomas Chou682a1692011-01-25 19:22:05 +000084#include <linux/of.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070085
86#include <linux/netdevice.h>
87#include <linux/etherdevice.h>
88#include <linux/skbuff.h>
89
90#include <asm/io.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070091
92#include "smc91x.h"
93
Linus Torvalds1da177e2005-04-16 15:20:36 -070094#ifndef SMC_NOWAIT
95# define SMC_NOWAIT 0
96#endif
97static int nowait = SMC_NOWAIT;
98module_param(nowait, int, 0400);
99MODULE_PARM_DESC(nowait, "set to 1 for no wait state");
100
101/*
102 * Transmit timeout, default 5 seconds.
103 */
Nicolas Pitreea937562005-04-12 16:26:40 -0400104static int watchdog = 1000;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105module_param(watchdog, int, 0400);
106MODULE_PARM_DESC(watchdog, "transmit timeout in milliseconds");
107
108MODULE_LICENSE("GPL");
Kay Sievers72abb462008-04-18 13:50:44 -0700109MODULE_ALIAS("platform:smc91x");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110
111/*
112 * The internal workings of the driver. If you are changing anything
113 * here with the SMC stuff, you should have the datasheet and know
114 * what you are doing.
115 */
116#define CARDNAME "smc91x"
117
118/*
119 * Use power-down feature of the chip
120 */
121#define POWER_DOWN 1
122
123/*
124 * Wait time for memory to be free. This probably shouldn't be
125 * tuned that much, as waiting for this means nothing else happens
126 * in the system
127 */
128#define MEMORY_WAIT_TIME 16
129
130/*
Nicolas Pitre5d0571d2005-11-17 14:02:48 -0500131 * The maximum number of processing loops allowed for each call to the
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400132 * IRQ handler.
Nicolas Pitre5d0571d2005-11-17 14:02:48 -0500133 */
134#define MAX_IRQ_LOOPS 8
135
136/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137 * This selects whether TX packets are sent one by one to the SMC91x internal
138 * memory and throttled until transmission completes. This may prevent
139 * RX overruns a litle by keeping much of the memory free for RX packets
140 * but to the expense of reduced TX throughput and increased IRQ overhead.
141 * Note this is not a cure for a too slow data bus or too high IRQ latency.
142 */
143#define THROTTLE_TX_PKTS 0
144
145/*
146 * The MII clock high/low times. 2x this number gives the MII clock period
147 * in microseconds. (was 50, but this gives 6.4ms for each MII transaction!)
148 */
149#define MII_DELAY 1
150
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151#if SMC_DEBUG > 0
152#define DBG(n, args...) \
153 do { \
154 if (SMC_DEBUG >= (n)) \
155 printk(args); \
156 } while (0)
157
158#define PRINTK(args...) printk(args)
159#else
160#define DBG(n, args...) do { } while(0)
161#define PRINTK(args...) printk(KERN_DEBUG args)
162#endif
163
164#if SMC_DEBUG > 3
165static void PRINT_PKT(u_char *buf, int length)
166{
167 int i;
168 int remainder;
169 int lines;
170
171 lines = length / 16;
172 remainder = length % 16;
173
174 for (i = 0; i < lines ; i ++) {
175 int cur;
176 for (cur = 0; cur < 8; cur++) {
177 u_char a, b;
178 a = *buf++;
179 b = *buf++;
180 printk("%02x%02x ", a, b);
181 }
182 printk("\n");
183 }
184 for (i = 0; i < remainder/2 ; i++) {
185 u_char a, b;
186 a = *buf++;
187 b = *buf++;
188 printk("%02x%02x ", a, b);
189 }
190 printk("\n");
191}
192#else
193#define PRINT_PKT(x...) do { } while(0)
194#endif
195
196
197/* this enables an interrupt in the interrupt mask register */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900198#define SMC_ENABLE_INT(lp, x) do { \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199 unsigned char mask; \
Dongdong Deng8ff499e2009-08-23 22:59:04 -0700200 unsigned long smc_enable_flags; \
201 spin_lock_irqsave(&lp->lock, smc_enable_flags); \
Magnus Dammcfdfa862008-02-22 19:55:05 +0900202 mask = SMC_GET_INT_MASK(lp); \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203 mask |= (x); \
Magnus Dammcfdfa862008-02-22 19:55:05 +0900204 SMC_SET_INT_MASK(lp, mask); \
Dongdong Deng8ff499e2009-08-23 22:59:04 -0700205 spin_unlock_irqrestore(&lp->lock, smc_enable_flags); \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206} while (0)
207
208/* this disables an interrupt from the interrupt mask register */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900209#define SMC_DISABLE_INT(lp, x) do { \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210 unsigned char mask; \
Dongdong Deng8ff499e2009-08-23 22:59:04 -0700211 unsigned long smc_disable_flags; \
212 spin_lock_irqsave(&lp->lock, smc_disable_flags); \
Magnus Dammcfdfa862008-02-22 19:55:05 +0900213 mask = SMC_GET_INT_MASK(lp); \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214 mask &= ~(x); \
Magnus Dammcfdfa862008-02-22 19:55:05 +0900215 SMC_SET_INT_MASK(lp, mask); \
Dongdong Deng8ff499e2009-08-23 22:59:04 -0700216 spin_unlock_irqrestore(&lp->lock, smc_disable_flags); \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217} while (0)
218
219/*
220 * Wait while MMU is busy. This is usually in the order of a few nanosecs
221 * if at all, but let's avoid deadlocking the system if the hardware
222 * decides to go south.
223 */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900224#define SMC_WAIT_MMU_BUSY(lp) do { \
225 if (unlikely(SMC_GET_MMU_CMD(lp) & MC_BUSY)) { \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226 unsigned long timeout = jiffies + 2; \
Magnus Dammcfdfa862008-02-22 19:55:05 +0900227 while (SMC_GET_MMU_CMD(lp) & MC_BUSY) { \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228 if (time_after(jiffies, timeout)) { \
229 printk("%s: timeout %s line %d\n", \
230 dev->name, __FILE__, __LINE__); \
231 break; \
232 } \
233 cpu_relax(); \
234 } \
235 } \
236} while (0)
237
238
239/*
240 * this does a soft reset on the device
241 */
242static void smc_reset(struct net_device *dev)
243{
244 struct smc_local *lp = netdev_priv(dev);
245 void __iomem *ioaddr = lp->base;
246 unsigned int ctl, cfg;
Nicolas Pitrebe836682005-06-19 23:56:21 -0400247 struct sk_buff *pending_skb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700248
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700249 DBG(2, "%s: %s\n", dev->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250
Nicolas Pitrebe836682005-06-19 23:56:21 -0400251 /* Disable all interrupts, block TX tasklet */
Russell King76cb4fe2006-08-14 23:00:20 -0700252 spin_lock_irq(&lp->lock);
Magnus Dammcfdfa862008-02-22 19:55:05 +0900253 SMC_SELECT_BANK(lp, 2);
254 SMC_SET_INT_MASK(lp, 0);
Nicolas Pitrebe836682005-06-19 23:56:21 -0400255 pending_skb = lp->pending_tx_skb;
256 lp->pending_tx_skb = NULL;
Russell King76cb4fe2006-08-14 23:00:20 -0700257 spin_unlock_irq(&lp->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258
Nicolas Pitrebe836682005-06-19 23:56:21 -0400259 /* free any pending tx skb */
260 if (pending_skb) {
261 dev_kfree_skb(pending_skb);
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700262 dev->stats.tx_errors++;
263 dev->stats.tx_aborted_errors++;
Nicolas Pitrebe836682005-06-19 23:56:21 -0400264 }
265
Linus Torvalds1da177e2005-04-16 15:20:36 -0700266 /*
267 * This resets the registers mostly to defaults, but doesn't
268 * affect EEPROM. That seems unnecessary
269 */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900270 SMC_SELECT_BANK(lp, 0);
271 SMC_SET_RCR(lp, RCR_SOFTRST);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700272
273 /*
274 * Setup the Configuration Register
275 * This is necessary because the CONFIG_REG is not affected
276 * by a soft reset
277 */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900278 SMC_SELECT_BANK(lp, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279
280 cfg = CONFIG_DEFAULT;
281
282 /*
283 * Setup for fast accesses if requested. If the card/system
284 * can't handle it then there will be no recovery except for
285 * a hard reset or power cycle
286 */
Eric Miaoc4f0e762008-06-19 17:39:03 +0800287 if (lp->cfg.flags & SMC91X_NOWAIT)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288 cfg |= CONFIG_NO_WAIT;
289
290 /*
291 * Release from possible power-down state
292 * Configuration register is not affected by Soft Reset
293 */
294 cfg |= CONFIG_EPH_POWER_EN;
295
Magnus Dammcfdfa862008-02-22 19:55:05 +0900296 SMC_SET_CONFIG(lp, cfg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297
298 /* this should pause enough for the chip to be happy */
299 /*
300 * elaborate? What does the chip _need_? --jgarzik
301 *
302 * This seems to be undocumented, but something the original
303 * driver(s) have always done. Suspect undocumented timing
304 * info/determined empirically. --rmk
305 */
306 udelay(1);
307
308 /* Disable transmit and receive functionality */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900309 SMC_SELECT_BANK(lp, 0);
310 SMC_SET_RCR(lp, RCR_CLEAR);
311 SMC_SET_TCR(lp, TCR_CLEAR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312
Magnus Dammcfdfa862008-02-22 19:55:05 +0900313 SMC_SELECT_BANK(lp, 1);
314 ctl = SMC_GET_CTL(lp) | CTL_LE_ENABLE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700315
316 /*
317 * Set the control register to automatically release successfully
318 * transmitted packets, to make the best use out of our limited
319 * memory
320 */
321 if(!THROTTLE_TX_PKTS)
322 ctl |= CTL_AUTO_RELEASE;
323 else
324 ctl &= ~CTL_AUTO_RELEASE;
Magnus Dammcfdfa862008-02-22 19:55:05 +0900325 SMC_SET_CTL(lp, ctl);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326
327 /* Reset the MMU */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900328 SMC_SELECT_BANK(lp, 2);
329 SMC_SET_MMU_CMD(lp, MC_RESET);
330 SMC_WAIT_MMU_BUSY(lp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700331}
332
333/*
334 * Enable Interrupts, Receive, and Transmit
335 */
336static void smc_enable(struct net_device *dev)
337{
338 struct smc_local *lp = netdev_priv(dev);
339 void __iomem *ioaddr = lp->base;
340 int mask;
341
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700342 DBG(2, "%s: %s\n", dev->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700343
344 /* see the header file for options in TCR/RCR DEFAULT */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900345 SMC_SELECT_BANK(lp, 0);
346 SMC_SET_TCR(lp, lp->tcr_cur_mode);
347 SMC_SET_RCR(lp, lp->rcr_cur_mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348
Magnus Dammcfdfa862008-02-22 19:55:05 +0900349 SMC_SELECT_BANK(lp, 1);
350 SMC_SET_MAC_ADDR(lp, dev->dev_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351
352 /* now, enable interrupts */
353 mask = IM_EPH_INT|IM_RX_OVRN_INT|IM_RCV_INT;
354 if (lp->version >= (CHIP_91100 << 4))
355 mask |= IM_MDINT;
Magnus Dammcfdfa862008-02-22 19:55:05 +0900356 SMC_SELECT_BANK(lp, 2);
357 SMC_SET_INT_MASK(lp, mask);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358
359 /*
360 * From this point the register bank must _NOT_ be switched away
361 * to something else than bank 2 without proper locking against
362 * races with any tasklet or interrupt handlers until smc_shutdown()
363 * or smc_reset() is called.
364 */
365}
366
367/*
368 * this puts the device in an inactive state
369 */
370static void smc_shutdown(struct net_device *dev)
371{
372 struct smc_local *lp = netdev_priv(dev);
373 void __iomem *ioaddr = lp->base;
Nicolas Pitrebe836682005-06-19 23:56:21 -0400374 struct sk_buff *pending_skb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700376 DBG(2, "%s: %s\n", CARDNAME, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377
378 /* no more interrupts for me */
Russell King76cb4fe2006-08-14 23:00:20 -0700379 spin_lock_irq(&lp->lock);
Magnus Dammcfdfa862008-02-22 19:55:05 +0900380 SMC_SELECT_BANK(lp, 2);
381 SMC_SET_INT_MASK(lp, 0);
Nicolas Pitrebe836682005-06-19 23:56:21 -0400382 pending_skb = lp->pending_tx_skb;
383 lp->pending_tx_skb = NULL;
Russell King76cb4fe2006-08-14 23:00:20 -0700384 spin_unlock_irq(&lp->lock);
Nicolas Pitrebe836682005-06-19 23:56:21 -0400385 if (pending_skb)
386 dev_kfree_skb(pending_skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700387
388 /* and tell the card to stay away from that nasty outside world */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900389 SMC_SELECT_BANK(lp, 0);
390 SMC_SET_RCR(lp, RCR_CLEAR);
391 SMC_SET_TCR(lp, TCR_CLEAR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700392
393#ifdef POWER_DOWN
394 /* finally, shut the chip down */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900395 SMC_SELECT_BANK(lp, 1);
396 SMC_SET_CONFIG(lp, SMC_GET_CONFIG(lp) & ~CONFIG_EPH_POWER_EN);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700397#endif
398}
399
400/*
401 * This is the procedure to handle the receipt of a packet.
402 */
403static inline void smc_rcv(struct net_device *dev)
404{
405 struct smc_local *lp = netdev_priv(dev);
406 void __iomem *ioaddr = lp->base;
407 unsigned int packet_number, status, packet_len;
408
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700409 DBG(3, "%s: %s\n", dev->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410
Magnus Dammcfdfa862008-02-22 19:55:05 +0900411 packet_number = SMC_GET_RXFIFO(lp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700412 if (unlikely(packet_number & RXFIFO_REMPTY)) {
413 PRINTK("%s: smc_rcv with nothing on FIFO.\n", dev->name);
414 return;
415 }
416
417 /* read from start of packet */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900418 SMC_SET_PTR(lp, PTR_READ | PTR_RCV | PTR_AUTOINC);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700419
420 /* First two words are status and packet length */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900421 SMC_GET_PKT_HDR(lp, status, packet_len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422 packet_len &= 0x07ff; /* mask off top bits */
423 DBG(2, "%s: RX PNR 0x%x STATUS 0x%04x LENGTH 0x%04x (%d)\n",
424 dev->name, packet_number, status,
425 packet_len, packet_len);
426
427 back:
428 if (unlikely(packet_len < 6 || status & RS_ERRORS)) {
429 if (status & RS_TOOLONG && packet_len <= (1514 + 4 + 6)) {
430 /* accept VLAN packets */
431 status &= ~RS_TOOLONG;
432 goto back;
433 }
434 if (packet_len < 6) {
435 /* bloody hardware */
436 printk(KERN_ERR "%s: fubar (rxlen %u status %x\n",
437 dev->name, packet_len, status);
438 status |= RS_TOOSHORT;
439 }
Magnus Dammcfdfa862008-02-22 19:55:05 +0900440 SMC_WAIT_MMU_BUSY(lp);
441 SMC_SET_MMU_CMD(lp, MC_RELEASE);
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700442 dev->stats.rx_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700443 if (status & RS_ALGNERR)
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700444 dev->stats.rx_frame_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445 if (status & (RS_TOOSHORT | RS_TOOLONG))
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700446 dev->stats.rx_length_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447 if (status & RS_BADCRC)
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700448 dev->stats.rx_crc_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449 } else {
450 struct sk_buff *skb;
451 unsigned char *data;
452 unsigned int data_len;
453
454 /* set multicast stats */
455 if (status & RS_MULTICAST)
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700456 dev->stats.multicast++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700457
458 /*
459 * Actual payload is packet_len - 6 (or 5 if odd byte).
460 * We want skb_reserve(2) and the final ctrl word
461 * (2 bytes, possibly containing the payload odd byte).
462 * Furthermore, we add 2 bytes to allow rounding up to
463 * multiple of 4 bytes on 32 bit buses.
464 * Hence packet_len - 6 + 2 + 2 + 2.
465 */
466 skb = dev_alloc_skb(packet_len);
467 if (unlikely(skb == NULL)) {
468 printk(KERN_NOTICE "%s: Low memory, packet dropped.\n",
469 dev->name);
Magnus Dammcfdfa862008-02-22 19:55:05 +0900470 SMC_WAIT_MMU_BUSY(lp);
471 SMC_SET_MMU_CMD(lp, MC_RELEASE);
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700472 dev->stats.rx_dropped++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700473 return;
474 }
475
476 /* Align IP header to 32 bits */
477 skb_reserve(skb, 2);
478
479 /* BUG: the LAN91C111 rev A never sets this bit. Force it. */
480 if (lp->version == 0x90)
481 status |= RS_ODDFRAME;
482
483 /*
484 * If odd length: packet_len - 5,
485 * otherwise packet_len - 6.
486 * With the trailing ctrl byte it's packet_len - 4.
487 */
488 data_len = packet_len - ((status & RS_ODDFRAME) ? 5 : 6);
489 data = skb_put(skb, data_len);
Magnus Dammcfdfa862008-02-22 19:55:05 +0900490 SMC_PULL_DATA(lp, data, packet_len - 4);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700491
Magnus Dammcfdfa862008-02-22 19:55:05 +0900492 SMC_WAIT_MMU_BUSY(lp);
493 SMC_SET_MMU_CMD(lp, MC_RELEASE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700494
495 PRINT_PKT(data, packet_len - 4);
496
Linus Torvalds1da177e2005-04-16 15:20:36 -0700497 skb->protocol = eth_type_trans(skb, dev);
498 netif_rx(skb);
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700499 dev->stats.rx_packets++;
500 dev->stats.rx_bytes += data_len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501 }
502}
503
504#ifdef CONFIG_SMP
505/*
506 * On SMP we have the following problem:
507 *
508 * A = smc_hardware_send_pkt()
509 * B = smc_hard_start_xmit()
510 * C = smc_interrupt()
511 *
512 * A and B can never be executed simultaneously. However, at least on UP,
513 * it is possible (and even desirable) for C to interrupt execution of
514 * A or B in order to have better RX reliability and avoid overruns.
515 * C, just like A and B, must have exclusive access to the chip and
516 * each of them must lock against any other concurrent access.
517 * Unfortunately this is not possible to have C suspend execution of A or
518 * B taking place on another CPU. On UP this is no an issue since A and B
519 * are run from softirq context and C from hard IRQ context, and there is
520 * no other CPU where concurrent access can happen.
521 * If ever there is a way to force at least B and C to always be executed
522 * on the same CPU then we could use read/write locks to protect against
523 * any other concurrent access and C would always interrupt B. But life
524 * isn't that easy in a SMP world...
525 */
Dongdong Deng8ff499e2009-08-23 22:59:04 -0700526#define smc_special_trylock(lock, flags) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700527({ \
528 int __ret; \
Dongdong Deng8ff499e2009-08-23 22:59:04 -0700529 local_irq_save(flags); \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530 __ret = spin_trylock(lock); \
531 if (!__ret) \
Dongdong Deng8ff499e2009-08-23 22:59:04 -0700532 local_irq_restore(flags); \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700533 __ret; \
534})
Alexey Dobriyan0b4f2922009-08-26 12:03:35 -0700535#define smc_special_lock(lock, flags) spin_lock_irqsave(lock, flags)
Dongdong Deng8ff499e2009-08-23 22:59:04 -0700536#define smc_special_unlock(lock, flags) spin_unlock_irqrestore(lock, flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700537#else
Mike Frysingerfd0775b2009-12-09 03:40:04 +0000538#define smc_special_trylock(lock, flags) (flags == flags)
539#define smc_special_lock(lock, flags) do { flags = 0; } while (0)
540#define smc_special_unlock(lock, flags) do { flags = 0; } while (0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700541#endif
542
543/*
544 * This is called to actually send a packet to the chip.
545 */
546static void smc_hardware_send_pkt(unsigned long data)
547{
548 struct net_device *dev = (struct net_device *)data;
549 struct smc_local *lp = netdev_priv(dev);
550 void __iomem *ioaddr = lp->base;
551 struct sk_buff *skb;
552 unsigned int packet_no, len;
553 unsigned char *buf;
Dongdong Deng8ff499e2009-08-23 22:59:04 -0700554 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700555
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700556 DBG(3, "%s: %s\n", dev->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700557
Dongdong Deng8ff499e2009-08-23 22:59:04 -0700558 if (!smc_special_trylock(&lp->lock, flags)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700559 netif_stop_queue(dev);
560 tasklet_schedule(&lp->tx_task);
561 return;
562 }
563
564 skb = lp->pending_tx_skb;
Nicolas Pitrebe836682005-06-19 23:56:21 -0400565 if (unlikely(!skb)) {
Dongdong Deng8ff499e2009-08-23 22:59:04 -0700566 smc_special_unlock(&lp->lock, flags);
Nicolas Pitrebe836682005-06-19 23:56:21 -0400567 return;
568 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700569 lp->pending_tx_skb = NULL;
Nicolas Pitrebe836682005-06-19 23:56:21 -0400570
Magnus Dammcfdfa862008-02-22 19:55:05 +0900571 packet_no = SMC_GET_AR(lp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700572 if (unlikely(packet_no & AR_FAILED)) {
573 printk("%s: Memory allocation failed.\n", dev->name);
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700574 dev->stats.tx_errors++;
575 dev->stats.tx_fifo_errors++;
Dongdong Deng8ff499e2009-08-23 22:59:04 -0700576 smc_special_unlock(&lp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577 goto done;
578 }
579
580 /* point to the beginning of the packet */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900581 SMC_SET_PN(lp, packet_no);
582 SMC_SET_PTR(lp, PTR_AUTOINC);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700583
584 buf = skb->data;
585 len = skb->len;
586 DBG(2, "%s: TX PNR 0x%x LENGTH 0x%04x (%d) BUF 0x%p\n",
587 dev->name, packet_no, len, len, buf);
588 PRINT_PKT(buf, len);
589
590 /*
591 * Send the packet length (+6 for status words, length, and ctl.
592 * The card will pad to 64 bytes with zeroes if packet is too small.
593 */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900594 SMC_PUT_PKT_HDR(lp, 0, len + 6);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700595
596 /* send the actual data */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900597 SMC_PUSH_DATA(lp, buf, len & ~1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700598
599 /* Send final ctl word with the last byte if there is one */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900600 SMC_outw(((len & 1) ? (0x2000 | buf[len-1]) : 0), ioaddr, DATA_REG(lp));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700601
602 /*
Nicolas Pitreea937562005-04-12 16:26:40 -0400603 * If THROTTLE_TX_PKTS is set, we stop the queue here. This will
604 * have the effect of having at most one packet queued for TX
605 * in the chip's memory at all time.
606 *
607 * If THROTTLE_TX_PKTS is not set then the queue is stopped only
608 * when memory allocation (MC_ALLOC) does not succeed right away.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700609 */
Nicolas Pitreea937562005-04-12 16:26:40 -0400610 if (THROTTLE_TX_PKTS)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700611 netif_stop_queue(dev);
612
613 /* queue the packet for TX */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900614 SMC_SET_MMU_CMD(lp, MC_ENQUEUE);
Dongdong Deng8ff499e2009-08-23 22:59:04 -0700615 smc_special_unlock(&lp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700616
617 dev->trans_start = jiffies;
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700618 dev->stats.tx_packets++;
619 dev->stats.tx_bytes += len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700620
Magnus Dammcfdfa862008-02-22 19:55:05 +0900621 SMC_ENABLE_INT(lp, IM_TX_INT | IM_TX_EMPTY_INT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700622
623done: if (!THROTTLE_TX_PKTS)
624 netif_wake_queue(dev);
625
626 dev_kfree_skb(skb);
627}
628
629/*
630 * Since I am not sure if I will have enough room in the chip's ram
631 * to store the packet, I call this routine which either sends it
632 * now, or set the card to generates an interrupt when ready
633 * for the packet.
634 */
635static int smc_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
636{
637 struct smc_local *lp = netdev_priv(dev);
638 void __iomem *ioaddr = lp->base;
639 unsigned int numPages, poll_count, status;
Dongdong Deng8ff499e2009-08-23 22:59:04 -0700640 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700641
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700642 DBG(3, "%s: %s\n", dev->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700643
644 BUG_ON(lp->pending_tx_skb != NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700645
646 /*
647 * The MMU wants the number of pages to be the number of 256 bytes
648 * 'pages', minus 1 (since a packet can't ever have 0 pages :))
649 *
650 * The 91C111 ignores the size bits, but earlier models don't.
651 *
652 * Pkt size for allocating is data length +6 (for additional status
653 * words, length and ctl)
654 *
655 * If odd size then last byte is included in ctl word.
656 */
657 numPages = ((skb->len & ~1) + (6 - 1)) >> 8;
658 if (unlikely(numPages > 7)) {
659 printk("%s: Far too big packet error.\n", dev->name);
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700660 dev->stats.tx_errors++;
661 dev->stats.tx_dropped++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700662 dev_kfree_skb(skb);
Patrick McHardy6ed10652009-06-23 06:03:08 +0000663 return NETDEV_TX_OK;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700664 }
665
Dongdong Deng8ff499e2009-08-23 22:59:04 -0700666 smc_special_lock(&lp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700667
668 /* now, try to allocate the memory */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900669 SMC_SET_MMU_CMD(lp, MC_ALLOC | numPages);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700670
671 /*
672 * Poll the chip for a short amount of time in case the
673 * allocation succeeds quickly.
674 */
675 poll_count = MEMORY_WAIT_TIME;
676 do {
Magnus Dammcfdfa862008-02-22 19:55:05 +0900677 status = SMC_GET_INT(lp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700678 if (status & IM_ALLOC_INT) {
Magnus Dammcfdfa862008-02-22 19:55:05 +0900679 SMC_ACK_INT(lp, IM_ALLOC_INT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700680 break;
681 }
682 } while (--poll_count);
683
Dongdong Deng8ff499e2009-08-23 22:59:04 -0700684 smc_special_unlock(&lp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700685
Nicolas Pitrebe836682005-06-19 23:56:21 -0400686 lp->pending_tx_skb = skb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700687 if (!poll_count) {
688 /* oh well, wait until the chip finds memory later */
689 netif_stop_queue(dev);
690 DBG(2, "%s: TX memory allocation deferred.\n", dev->name);
Magnus Dammcfdfa862008-02-22 19:55:05 +0900691 SMC_ENABLE_INT(lp, IM_ALLOC_INT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700692 } else {
693 /*
694 * Allocation succeeded: push packet to the chip's own memory
695 * immediately.
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400696 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700697 smc_hardware_send_pkt((unsigned long)dev);
698 }
699
Patrick McHardy6ed10652009-06-23 06:03:08 +0000700 return NETDEV_TX_OK;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700701}
702
703/*
704 * This handles a TX interrupt, which is only called when:
705 * - a TX error occurred, or
706 * - CTL_AUTO_RELEASE is not set and TX of a packet completed.
707 */
708static void smc_tx(struct net_device *dev)
709{
710 struct smc_local *lp = netdev_priv(dev);
711 void __iomem *ioaddr = lp->base;
712 unsigned int saved_packet, packet_no, tx_status, pkt_len;
713
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700714 DBG(3, "%s: %s\n", dev->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700715
716 /* If the TX FIFO is empty then nothing to do */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900717 packet_no = SMC_GET_TXFIFO(lp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700718 if (unlikely(packet_no & TXFIFO_TEMPTY)) {
719 PRINTK("%s: smc_tx with nothing on FIFO.\n", dev->name);
720 return;
721 }
722
723 /* select packet to read from */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900724 saved_packet = SMC_GET_PN(lp);
725 SMC_SET_PN(lp, packet_no);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700726
727 /* read the first word (status word) from this packet */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900728 SMC_SET_PTR(lp, PTR_AUTOINC | PTR_READ);
729 SMC_GET_PKT_HDR(lp, tx_status, pkt_len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700730 DBG(2, "%s: TX STATUS 0x%04x PNR 0x%02x\n",
731 dev->name, tx_status, packet_no);
732
Nicolas Pitre8de90112005-04-12 16:21:11 -0400733 if (!(tx_status & ES_TX_SUC))
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700734 dev->stats.tx_errors++;
Nicolas Pitre8de90112005-04-12 16:21:11 -0400735
736 if (tx_status & ES_LOSTCARR)
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700737 dev->stats.tx_carrier_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700738
Nicolas Pitre8de90112005-04-12 16:21:11 -0400739 if (tx_status & (ES_LATCOL | ES_16COL)) {
740 PRINTK("%s: %s occurred on last xmit\n", dev->name,
741 (tx_status & ES_LATCOL) ?
742 "late collision" : "too many collisions");
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700743 dev->stats.tx_window_errors++;
744 if (!(dev->stats.tx_window_errors & 63) && net_ratelimit()) {
Nicolas Pitre8de90112005-04-12 16:21:11 -0400745 printk(KERN_INFO "%s: unexpectedly large number of "
746 "bad collisions. Please check duplex "
Linus Torvalds1da177e2005-04-16 15:20:36 -0700747 "setting.\n", dev->name);
748 }
749 }
750
751 /* kill the packet */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900752 SMC_WAIT_MMU_BUSY(lp);
753 SMC_SET_MMU_CMD(lp, MC_FREEPKT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700754
755 /* Don't restore Packet Number Reg until busy bit is cleared */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900756 SMC_WAIT_MMU_BUSY(lp);
757 SMC_SET_PN(lp, saved_packet);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700758
759 /* re-enable transmit */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900760 SMC_SELECT_BANK(lp, 0);
761 SMC_SET_TCR(lp, lp->tcr_cur_mode);
762 SMC_SELECT_BANK(lp, 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700763}
764
765
766/*---PHY CONTROL AND CONFIGURATION-----------------------------------------*/
767
768static void smc_mii_out(struct net_device *dev, unsigned int val, int bits)
769{
770 struct smc_local *lp = netdev_priv(dev);
771 void __iomem *ioaddr = lp->base;
772 unsigned int mii_reg, mask;
773
Magnus Dammcfdfa862008-02-22 19:55:05 +0900774 mii_reg = SMC_GET_MII(lp) & ~(MII_MCLK | MII_MDOE | MII_MDO);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700775 mii_reg |= MII_MDOE;
776
777 for (mask = 1 << (bits - 1); mask; mask >>= 1) {
778 if (val & mask)
779 mii_reg |= MII_MDO;
780 else
781 mii_reg &= ~MII_MDO;
782
Magnus Dammcfdfa862008-02-22 19:55:05 +0900783 SMC_SET_MII(lp, mii_reg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700784 udelay(MII_DELAY);
Magnus Dammcfdfa862008-02-22 19:55:05 +0900785 SMC_SET_MII(lp, mii_reg | MII_MCLK);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700786 udelay(MII_DELAY);
787 }
788}
789
790static unsigned int smc_mii_in(struct net_device *dev, int bits)
791{
792 struct smc_local *lp = netdev_priv(dev);
793 void __iomem *ioaddr = lp->base;
794 unsigned int mii_reg, mask, val;
795
Magnus Dammcfdfa862008-02-22 19:55:05 +0900796 mii_reg = SMC_GET_MII(lp) & ~(MII_MCLK | MII_MDOE | MII_MDO);
797 SMC_SET_MII(lp, mii_reg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700798
799 for (mask = 1 << (bits - 1), val = 0; mask; mask >>= 1) {
Magnus Dammcfdfa862008-02-22 19:55:05 +0900800 if (SMC_GET_MII(lp) & MII_MDI)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700801 val |= mask;
802
Magnus Dammcfdfa862008-02-22 19:55:05 +0900803 SMC_SET_MII(lp, mii_reg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700804 udelay(MII_DELAY);
Magnus Dammcfdfa862008-02-22 19:55:05 +0900805 SMC_SET_MII(lp, mii_reg | MII_MCLK);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700806 udelay(MII_DELAY);
807 }
808
809 return val;
810}
811
812/*
813 * Reads a register from the MII Management serial interface
814 */
815static int smc_phy_read(struct net_device *dev, int phyaddr, int phyreg)
816{
817 struct smc_local *lp = netdev_priv(dev);
818 void __iomem *ioaddr = lp->base;
819 unsigned int phydata;
820
Magnus Dammcfdfa862008-02-22 19:55:05 +0900821 SMC_SELECT_BANK(lp, 3);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700822
823 /* Idle - 32 ones */
824 smc_mii_out(dev, 0xffffffff, 32);
825
826 /* Start code (01) + read (10) + phyaddr + phyreg */
827 smc_mii_out(dev, 6 << 10 | phyaddr << 5 | phyreg, 14);
828
829 /* Turnaround (2bits) + phydata */
830 phydata = smc_mii_in(dev, 18);
831
832 /* Return to idle state */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900833 SMC_SET_MII(lp, SMC_GET_MII(lp) & ~(MII_MCLK|MII_MDOE|MII_MDO));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700834
835 DBG(3, "%s: phyaddr=0x%x, phyreg=0x%x, phydata=0x%x\n",
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700836 __func__, phyaddr, phyreg, phydata);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700837
Magnus Dammcfdfa862008-02-22 19:55:05 +0900838 SMC_SELECT_BANK(lp, 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700839 return phydata;
840}
841
842/*
843 * Writes a register to the MII Management serial interface
844 */
845static void smc_phy_write(struct net_device *dev, int phyaddr, int phyreg,
846 int phydata)
847{
848 struct smc_local *lp = netdev_priv(dev);
849 void __iomem *ioaddr = lp->base;
850
Magnus Dammcfdfa862008-02-22 19:55:05 +0900851 SMC_SELECT_BANK(lp, 3);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700852
853 /* Idle - 32 ones */
854 smc_mii_out(dev, 0xffffffff, 32);
855
856 /* Start code (01) + write (01) + phyaddr + phyreg + turnaround + phydata */
857 smc_mii_out(dev, 5 << 28 | phyaddr << 23 | phyreg << 18 | 2 << 16 | phydata, 32);
858
859 /* Return to idle state */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900860 SMC_SET_MII(lp, SMC_GET_MII(lp) & ~(MII_MCLK|MII_MDOE|MII_MDO));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700861
862 DBG(3, "%s: phyaddr=0x%x, phyreg=0x%x, phydata=0x%x\n",
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700863 __func__, phyaddr, phyreg, phydata);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700864
Magnus Dammcfdfa862008-02-22 19:55:05 +0900865 SMC_SELECT_BANK(lp, 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700866}
867
868/*
869 * Finds and reports the PHY address
870 */
871static void smc_phy_detect(struct net_device *dev)
872{
873 struct smc_local *lp = netdev_priv(dev);
874 int phyaddr;
875
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700876 DBG(2, "%s: %s\n", dev->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700877
878 lp->phy_type = 0;
879
880 /*
881 * Scan all 32 PHY addresses if necessary, starting at
882 * PHY#1 to PHY#31, and then PHY#0 last.
883 */
884 for (phyaddr = 1; phyaddr < 33; ++phyaddr) {
885 unsigned int id1, id2;
886
887 /* Read the PHY identifiers */
888 id1 = smc_phy_read(dev, phyaddr & 31, MII_PHYSID1);
889 id2 = smc_phy_read(dev, phyaddr & 31, MII_PHYSID2);
890
891 DBG(3, "%s: phy_id1=0x%x, phy_id2=0x%x\n",
892 dev->name, id1, id2);
893
894 /* Make sure it is a valid identifier */
895 if (id1 != 0x0000 && id1 != 0xffff && id1 != 0x8000 &&
896 id2 != 0x0000 && id2 != 0xffff && id2 != 0x8000) {
897 /* Save the PHY's address */
898 lp->mii.phy_id = phyaddr & 31;
899 lp->phy_type = id1 << 16 | id2;
900 break;
901 }
902 }
903}
904
905/*
906 * Sets the PHY to a configuration as determined by the user
907 */
908static int smc_phy_fixed(struct net_device *dev)
909{
910 struct smc_local *lp = netdev_priv(dev);
911 void __iomem *ioaddr = lp->base;
912 int phyaddr = lp->mii.phy_id;
913 int bmcr, cfg1;
914
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700915 DBG(3, "%s: %s\n", dev->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700916
917 /* Enter Link Disable state */
918 cfg1 = smc_phy_read(dev, phyaddr, PHY_CFG1_REG);
919 cfg1 |= PHY_CFG1_LNKDIS;
920 smc_phy_write(dev, phyaddr, PHY_CFG1_REG, cfg1);
921
922 /*
923 * Set our fixed capabilities
924 * Disable auto-negotiation
925 */
926 bmcr = 0;
927
928 if (lp->ctl_rfduplx)
929 bmcr |= BMCR_FULLDPLX;
930
931 if (lp->ctl_rspeed == 100)
932 bmcr |= BMCR_SPEED100;
933
934 /* Write our capabilities to the phy control register */
935 smc_phy_write(dev, phyaddr, MII_BMCR, bmcr);
936
937 /* Re-Configure the Receive/Phy Control register */
Magnus Dammcfdfa862008-02-22 19:55:05 +0900938 SMC_SELECT_BANK(lp, 0);
939 SMC_SET_RPC(lp, lp->rpc_cur_mode);
940 SMC_SELECT_BANK(lp, 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700941
942 return 1;
943}
944
945/*
946 * smc_phy_reset - reset the phy
947 * @dev: net device
948 * @phy: phy address
949 *
950 * Issue a software reset for the specified PHY and
951 * wait up to 100ms for the reset to complete. We should
952 * not access the PHY for 50ms after issuing the reset.
953 *
954 * The time to wait appears to be dependent on the PHY.
955 *
956 * Must be called with lp->lock locked.
957 */
958static int smc_phy_reset(struct net_device *dev, int phy)
959{
960 struct smc_local *lp = netdev_priv(dev);
961 unsigned int bmcr;
962 int timeout;
963
964 smc_phy_write(dev, phy, MII_BMCR, BMCR_RESET);
965
966 for (timeout = 2; timeout; timeout--) {
967 spin_unlock_irq(&lp->lock);
968 msleep(50);
969 spin_lock_irq(&lp->lock);
970
971 bmcr = smc_phy_read(dev, phy, MII_BMCR);
972 if (!(bmcr & BMCR_RESET))
973 break;
974 }
975
976 return bmcr & BMCR_RESET;
977}
978
979/*
980 * smc_phy_powerdown - powerdown phy
981 * @dev: net device
982 *
983 * Power down the specified PHY
984 */
985static void smc_phy_powerdown(struct net_device *dev)
986{
987 struct smc_local *lp = netdev_priv(dev);
988 unsigned int bmcr;
989 int phy = lp->mii.phy_id;
990
991 if (lp->phy_type == 0)
992 return;
993
994 /* We need to ensure that no calls to smc_phy_configure are
995 pending.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700996 */
David S. Miller4bb073c2008-06-12 02:22:02 -0700997 cancel_work_sync(&lp->phy_configure);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700998
999 bmcr = smc_phy_read(dev, phy, MII_BMCR);
1000 smc_phy_write(dev, phy, MII_BMCR, bmcr | BMCR_PDOWN);
1001}
1002
1003/*
1004 * smc_phy_check_media - check the media status and adjust TCR
1005 * @dev: net device
1006 * @init: set true for initialisation
1007 *
1008 * Select duplex mode depending on negotiation state. This
1009 * also updates our carrier state.
1010 */
1011static void smc_phy_check_media(struct net_device *dev, int init)
1012{
1013 struct smc_local *lp = netdev_priv(dev);
1014 void __iomem *ioaddr = lp->base;
1015
1016 if (mii_check_media(&lp->mii, netif_msg_link(lp), init)) {
1017 /* duplex state has changed */
1018 if (lp->mii.full_duplex) {
1019 lp->tcr_cur_mode |= TCR_SWFDUP;
1020 } else {
1021 lp->tcr_cur_mode &= ~TCR_SWFDUP;
1022 }
1023
Magnus Dammcfdfa862008-02-22 19:55:05 +09001024 SMC_SELECT_BANK(lp, 0);
1025 SMC_SET_TCR(lp, lp->tcr_cur_mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001026 }
1027}
1028
1029/*
1030 * Configures the specified PHY through the MII management interface
1031 * using Autonegotiation.
1032 * Calls smc_phy_fixed() if the user has requested a certain config.
1033 * If RPC ANEG bit is set, the media selection is dependent purely on
1034 * the selection by the MII (either in the MII BMCR reg or the result
1035 * of autonegotiation.) If the RPC ANEG bit is cleared, the selection
1036 * is controlled by the RPC SPEED and RPC DPLX bits.
1037 */
David Howells6d5aefb2006-12-05 19:36:26 +00001038static void smc_phy_configure(struct work_struct *work)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001039{
David Howells6d5aefb2006-12-05 19:36:26 +00001040 struct smc_local *lp =
1041 container_of(work, struct smc_local, phy_configure);
1042 struct net_device *dev = lp->dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001043 void __iomem *ioaddr = lp->base;
1044 int phyaddr = lp->mii.phy_id;
1045 int my_phy_caps; /* My PHY capabilities */
1046 int my_ad_caps; /* My Advertised capabilities */
1047 int status;
1048
1049 DBG(3, "%s:smc_program_phy()\n", dev->name);
1050
1051 spin_lock_irq(&lp->lock);
1052
1053 /*
1054 * We should not be called if phy_type is zero.
1055 */
1056 if (lp->phy_type == 0)
1057 goto smc_phy_configure_exit;
1058
1059 if (smc_phy_reset(dev, phyaddr)) {
1060 printk("%s: PHY reset timed out\n", dev->name);
1061 goto smc_phy_configure_exit;
1062 }
1063
1064 /*
1065 * Enable PHY Interrupts (for register 18)
1066 * Interrupts listed here are disabled
1067 */
1068 smc_phy_write(dev, phyaddr, PHY_MASK_REG,
1069 PHY_INT_LOSSSYNC | PHY_INT_CWRD | PHY_INT_SSD |
1070 PHY_INT_ESD | PHY_INT_RPOL | PHY_INT_JAB |
1071 PHY_INT_SPDDET | PHY_INT_DPLXDET);
1072
1073 /* Configure the Receive/Phy Control register */
Magnus Dammcfdfa862008-02-22 19:55:05 +09001074 SMC_SELECT_BANK(lp, 0);
1075 SMC_SET_RPC(lp, lp->rpc_cur_mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001076
1077 /* If the user requested no auto neg, then go set his request */
1078 if (lp->mii.force_media) {
1079 smc_phy_fixed(dev);
1080 goto smc_phy_configure_exit;
1081 }
1082
1083 /* Copy our capabilities from MII_BMSR to MII_ADVERTISE */
1084 my_phy_caps = smc_phy_read(dev, phyaddr, MII_BMSR);
1085
1086 if (!(my_phy_caps & BMSR_ANEGCAPABLE)) {
1087 printk(KERN_INFO "Auto negotiation NOT supported\n");
1088 smc_phy_fixed(dev);
1089 goto smc_phy_configure_exit;
1090 }
1091
1092 my_ad_caps = ADVERTISE_CSMA; /* I am CSMA capable */
1093
1094 if (my_phy_caps & BMSR_100BASE4)
1095 my_ad_caps |= ADVERTISE_100BASE4;
1096 if (my_phy_caps & BMSR_100FULL)
1097 my_ad_caps |= ADVERTISE_100FULL;
1098 if (my_phy_caps & BMSR_100HALF)
1099 my_ad_caps |= ADVERTISE_100HALF;
1100 if (my_phy_caps & BMSR_10FULL)
1101 my_ad_caps |= ADVERTISE_10FULL;
1102 if (my_phy_caps & BMSR_10HALF)
1103 my_ad_caps |= ADVERTISE_10HALF;
1104
1105 /* Disable capabilities not selected by our user */
1106 if (lp->ctl_rspeed != 100)
1107 my_ad_caps &= ~(ADVERTISE_100BASE4|ADVERTISE_100FULL|ADVERTISE_100HALF);
1108
1109 if (!lp->ctl_rfduplx)
1110 my_ad_caps &= ~(ADVERTISE_100FULL|ADVERTISE_10FULL);
1111
1112 /* Update our Auto-Neg Advertisement Register */
1113 smc_phy_write(dev, phyaddr, MII_ADVERTISE, my_ad_caps);
1114 lp->mii.advertising = my_ad_caps;
1115
1116 /*
1117 * Read the register back. Without this, it appears that when
1118 * auto-negotiation is restarted, sometimes it isn't ready and
1119 * the link does not come up.
1120 */
1121 status = smc_phy_read(dev, phyaddr, MII_ADVERTISE);
1122
1123 DBG(2, "%s: phy caps=%x\n", dev->name, my_phy_caps);
1124 DBG(2, "%s: phy advertised caps=%x\n", dev->name, my_ad_caps);
1125
1126 /* Restart auto-negotiation process in order to advertise my caps */
1127 smc_phy_write(dev, phyaddr, MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART);
1128
1129 smc_phy_check_media(dev, 1);
1130
1131smc_phy_configure_exit:
Magnus Dammcfdfa862008-02-22 19:55:05 +09001132 SMC_SELECT_BANK(lp, 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001133 spin_unlock_irq(&lp->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001134}
1135
1136/*
1137 * smc_phy_interrupt
1138 *
1139 * Purpose: Handle interrupts relating to PHY register 18. This is
1140 * called from the "hard" interrupt handler under our private spinlock.
1141 */
1142static void smc_phy_interrupt(struct net_device *dev)
1143{
1144 struct smc_local *lp = netdev_priv(dev);
1145 int phyaddr = lp->mii.phy_id;
1146 int phy18;
1147
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07001148 DBG(2, "%s: %s\n", dev->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001149
1150 if (lp->phy_type == 0)
1151 return;
1152
1153 for(;;) {
1154 smc_phy_check_media(dev, 0);
1155
1156 /* Read PHY Register 18, Status Output */
1157 phy18 = smc_phy_read(dev, phyaddr, PHY_INT_REG);
1158 if ((phy18 & PHY_INT_INT) == 0)
1159 break;
1160 }
1161}
1162
1163/*--- END PHY CONTROL AND CONFIGURATION-------------------------------------*/
1164
1165static void smc_10bt_check_media(struct net_device *dev, int init)
1166{
1167 struct smc_local *lp = netdev_priv(dev);
1168 void __iomem *ioaddr = lp->base;
1169 unsigned int old_carrier, new_carrier;
1170
1171 old_carrier = netif_carrier_ok(dev) ? 1 : 0;
1172
Magnus Dammcfdfa862008-02-22 19:55:05 +09001173 SMC_SELECT_BANK(lp, 0);
1174 new_carrier = (SMC_GET_EPH_STATUS(lp) & ES_LINK_OK) ? 1 : 0;
1175 SMC_SELECT_BANK(lp, 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001176
1177 if (init || (old_carrier != new_carrier)) {
1178 if (!new_carrier) {
1179 netif_carrier_off(dev);
1180 } else {
1181 netif_carrier_on(dev);
1182 }
1183 if (netif_msg_link(lp))
1184 printk(KERN_INFO "%s: link %s\n", dev->name,
1185 new_carrier ? "up" : "down");
1186 }
1187}
1188
1189static void smc_eph_interrupt(struct net_device *dev)
1190{
1191 struct smc_local *lp = netdev_priv(dev);
1192 void __iomem *ioaddr = lp->base;
1193 unsigned int ctl;
1194
1195 smc_10bt_check_media(dev, 0);
1196
Magnus Dammcfdfa862008-02-22 19:55:05 +09001197 SMC_SELECT_BANK(lp, 1);
1198 ctl = SMC_GET_CTL(lp);
1199 SMC_SET_CTL(lp, ctl & ~CTL_LE_ENABLE);
1200 SMC_SET_CTL(lp, ctl);
1201 SMC_SELECT_BANK(lp, 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001202}
1203
1204/*
1205 * This is the main routine of the driver, to handle the device when
1206 * it needs some attention.
1207 */
David Howells7d12e782006-10-05 14:55:46 +01001208static irqreturn_t smc_interrupt(int irq, void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001209{
1210 struct net_device *dev = dev_id;
1211 struct smc_local *lp = netdev_priv(dev);
1212 void __iomem *ioaddr = lp->base;
1213 int status, mask, timeout, card_stats;
1214 int saved_pointer;
1215
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07001216 DBG(3, "%s: %s\n", dev->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001217
1218 spin_lock(&lp->lock);
1219
1220 /* A preamble may be used when there is a potential race
1221 * between the interruptible transmit functions and this
1222 * ISR. */
1223 SMC_INTERRUPT_PREAMBLE;
1224
Magnus Dammcfdfa862008-02-22 19:55:05 +09001225 saved_pointer = SMC_GET_PTR(lp);
1226 mask = SMC_GET_INT_MASK(lp);
1227 SMC_SET_INT_MASK(lp, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001228
1229 /* set a timeout value, so I don't stay here forever */
Nicolas Pitre5d0571d2005-11-17 14:02:48 -05001230 timeout = MAX_IRQ_LOOPS;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001231
1232 do {
Magnus Dammcfdfa862008-02-22 19:55:05 +09001233 status = SMC_GET_INT(lp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001234
1235 DBG(2, "%s: INT 0x%02x MASK 0x%02x MEM 0x%04x FIFO 0x%04x\n",
1236 dev->name, status, mask,
Magnus Dammcfdfa862008-02-22 19:55:05 +09001237 ({ int meminfo; SMC_SELECT_BANK(lp, 0);
1238 meminfo = SMC_GET_MIR(lp);
1239 SMC_SELECT_BANK(lp, 2); meminfo; }),
1240 SMC_GET_FIFO(lp));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001241
1242 status &= mask;
1243 if (!status)
1244 break;
1245
Nicolas Pitreea937562005-04-12 16:26:40 -04001246 if (status & IM_TX_INT) {
1247 /* do this before RX as it will free memory quickly */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001248 DBG(3, "%s: TX int\n", dev->name);
1249 smc_tx(dev);
Magnus Dammcfdfa862008-02-22 19:55:05 +09001250 SMC_ACK_INT(lp, IM_TX_INT);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001251 if (THROTTLE_TX_PKTS)
1252 netif_wake_queue(dev);
Nicolas Pitreea937562005-04-12 16:26:40 -04001253 } else if (status & IM_RCV_INT) {
1254 DBG(3, "%s: RX irq\n", dev->name);
1255 smc_rcv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001256 } else if (status & IM_ALLOC_INT) {
1257 DBG(3, "%s: Allocation irq\n", dev->name);
1258 tasklet_hi_schedule(&lp->tx_task);
1259 mask &= ~IM_ALLOC_INT;
1260 } else if (status & IM_TX_EMPTY_INT) {
1261 DBG(3, "%s: TX empty\n", dev->name);
1262 mask &= ~IM_TX_EMPTY_INT;
1263
1264 /* update stats */
Magnus Dammcfdfa862008-02-22 19:55:05 +09001265 SMC_SELECT_BANK(lp, 0);
1266 card_stats = SMC_GET_COUNTER(lp);
1267 SMC_SELECT_BANK(lp, 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001268
1269 /* single collisions */
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001270 dev->stats.collisions += card_stats & 0xF;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001271 card_stats >>= 4;
1272
1273 /* multiple collisions */
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001274 dev->stats.collisions += card_stats & 0xF;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001275 } else if (status & IM_RX_OVRN_INT) {
Nicolas Pitre8de90112005-04-12 16:21:11 -04001276 DBG(1, "%s: RX overrun (EPH_ST 0x%04x)\n", dev->name,
Magnus Dammcfdfa862008-02-22 19:55:05 +09001277 ({ int eph_st; SMC_SELECT_BANK(lp, 0);
1278 eph_st = SMC_GET_EPH_STATUS(lp);
1279 SMC_SELECT_BANK(lp, 2); eph_st; }));
1280 SMC_ACK_INT(lp, IM_RX_OVRN_INT);
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001281 dev->stats.rx_errors++;
1282 dev->stats.rx_fifo_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001283 } else if (status & IM_EPH_INT) {
1284 smc_eph_interrupt(dev);
1285 } else if (status & IM_MDINT) {
Magnus Dammcfdfa862008-02-22 19:55:05 +09001286 SMC_ACK_INT(lp, IM_MDINT);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001287 smc_phy_interrupt(dev);
1288 } else if (status & IM_ERCV_INT) {
Magnus Dammcfdfa862008-02-22 19:55:05 +09001289 SMC_ACK_INT(lp, IM_ERCV_INT);
Frans Pop84d57bd2010-03-24 07:57:32 +00001290 PRINTK("%s: UNSUPPORTED: ERCV INTERRUPT\n", dev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001291 }
1292 } while (--timeout);
1293
1294 /* restore register states */
Magnus Dammcfdfa862008-02-22 19:55:05 +09001295 SMC_SET_PTR(lp, saved_pointer);
1296 SMC_SET_INT_MASK(lp, mask);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001297 spin_unlock(&lp->lock);
1298
Sonic Zhangc500cb22008-04-10 21:30:37 -07001299#ifndef CONFIG_NET_POLL_CONTROLLER
Nicolas Pitre5d0571d2005-11-17 14:02:48 -05001300 if (timeout == MAX_IRQ_LOOPS)
1301 PRINTK("%s: spurious interrupt (mask = 0x%02x)\n",
1302 dev->name, mask);
Sonic Zhangc500cb22008-04-10 21:30:37 -07001303#endif
Nicolas Pitre5d0571d2005-11-17 14:02:48 -05001304 DBG(3, "%s: Interrupt done (%d loops)\n",
1305 dev->name, MAX_IRQ_LOOPS - timeout);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001306
1307 /*
1308 * We return IRQ_HANDLED unconditionally here even if there was
1309 * nothing to do. There is a possibility that a packet might
1310 * get enqueued into the chip right after TX_EMPTY_INT is raised
1311 * but just before the CPU acknowledges the IRQ.
1312 * Better take an unneeded IRQ in some occasions than complexifying
1313 * the code for all cases.
1314 */
1315 return IRQ_HANDLED;
1316}
1317
1318#ifdef CONFIG_NET_POLL_CONTROLLER
1319/*
1320 * Polling receive - used by netconsole and other diagnostic tools
1321 * to allow network i/o with interrupts disabled.
1322 */
1323static void smc_poll_controller(struct net_device *dev)
1324{
1325 disable_irq(dev->irq);
Al Viro9c8e7f52006-10-07 16:29:18 +01001326 smc_interrupt(dev->irq, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001327 enable_irq(dev->irq);
1328}
1329#endif
1330
1331/* Our watchdog timed out. Called by the networking layer */
1332static void smc_timeout(struct net_device *dev)
1333{
1334 struct smc_local *lp = netdev_priv(dev);
1335 void __iomem *ioaddr = lp->base;
Nicolas Pitre8de90112005-04-12 16:21:11 -04001336 int status, mask, eph_st, meminfo, fifo;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001337
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07001338 DBG(2, "%s: %s\n", dev->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001339
1340 spin_lock_irq(&lp->lock);
Magnus Dammcfdfa862008-02-22 19:55:05 +09001341 status = SMC_GET_INT(lp);
1342 mask = SMC_GET_INT_MASK(lp);
1343 fifo = SMC_GET_FIFO(lp);
1344 SMC_SELECT_BANK(lp, 0);
1345 eph_st = SMC_GET_EPH_STATUS(lp);
1346 meminfo = SMC_GET_MIR(lp);
1347 SMC_SELECT_BANK(lp, 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001348 spin_unlock_irq(&lp->lock);
Nicolas Pitre8de90112005-04-12 16:21:11 -04001349 PRINTK( "%s: TX timeout (INT 0x%02x INTMASK 0x%02x "
1350 "MEM 0x%04x FIFO 0x%04x EPH_ST 0x%04x)\n",
1351 dev->name, status, mask, meminfo, fifo, eph_st );
Linus Torvalds1da177e2005-04-16 15:20:36 -07001352
1353 smc_reset(dev);
1354 smc_enable(dev);
1355
1356 /*
1357 * Reconfiguring the PHY doesn't seem like a bad idea here, but
1358 * smc_phy_configure() calls msleep() which calls schedule_timeout()
1359 * which calls schedule(). Hence we use a work queue.
1360 */
David S. Miller4bb073c2008-06-12 02:22:02 -07001361 if (lp->phy_type != 0)
1362 schedule_work(&lp->phy_configure);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001363
1364 /* We can accept TX packets again */
Eric Dumazet1ae5dc32010-05-10 05:01:31 -07001365 dev->trans_start = jiffies; /* prevent tx timeout */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001366 netif_wake_queue(dev);
1367}
1368
1369/*
1370 * This routine will, depending on the values passed to it,
1371 * either make it accept multicast packets, go into
1372 * promiscuous mode (for TCPDUMP and cousins) or accept
1373 * a select set of multicast packets
1374 */
1375static void smc_set_multicast_list(struct net_device *dev)
1376{
1377 struct smc_local *lp = netdev_priv(dev);
1378 void __iomem *ioaddr = lp->base;
1379 unsigned char multicast_table[8];
1380 int update_multicast = 0;
1381
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07001382 DBG(2, "%s: %s\n", dev->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001383
1384 if (dev->flags & IFF_PROMISC) {
1385 DBG(2, "%s: RCR_PRMS\n", dev->name);
1386 lp->rcr_cur_mode |= RCR_PRMS;
1387 }
1388
1389/* BUG? I never disable promiscuous mode if multicasting was turned on.
1390 Now, I turn off promiscuous mode, but I don't do anything to multicasting
1391 when promiscuous mode is turned on.
1392*/
1393
1394 /*
1395 * Here, I am setting this to accept all multicast packets.
1396 * I don't need to zero the multicast table, because the flag is
1397 * checked before the table is
1398 */
Jiri Pirko4cd24ea2010-02-08 04:30:35 +00001399 else if (dev->flags & IFF_ALLMULTI || netdev_mc_count(dev) > 16) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001400 DBG(2, "%s: RCR_ALMUL\n", dev->name);
1401 lp->rcr_cur_mode |= RCR_ALMUL;
1402 }
1403
1404 /*
1405 * This sets the internal hardware table to filter out unwanted
1406 * multicast packets before they take up memory.
1407 *
1408 * The SMC chip uses a hash table where the high 6 bits of the CRC of
1409 * address are the offset into the table. If that bit is 1, then the
1410 * multicast packet is accepted. Otherwise, it's dropped silently.
1411 *
1412 * To use the 6 bits as an offset into the table, the high 3 bits are
1413 * the number of the 8 bit register, while the low 3 bits are the bit
1414 * within that register.
1415 */
Jiri Pirko4cd24ea2010-02-08 04:30:35 +00001416 else if (!netdev_mc_empty(dev)) {
Jiri Pirko22bedad32010-04-01 21:22:57 +00001417 struct netdev_hw_addr *ha;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001418
1419 /* table for flipping the order of 3 bits */
1420 static const unsigned char invert3[] = {0, 4, 2, 6, 1, 5, 3, 7};
1421
1422 /* start with a table of all zeros: reject all */
1423 memset(multicast_table, 0, sizeof(multicast_table));
1424
Jiri Pirko22bedad32010-04-01 21:22:57 +00001425 netdev_for_each_mc_addr(ha, dev) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001426 int position;
1427
Linus Torvalds1da177e2005-04-16 15:20:36 -07001428 /* make sure this is a multicast address -
1429 shouldn't this be a given if we have it here ? */
Jiri Pirko22bedad32010-04-01 21:22:57 +00001430 if (!(*ha->addr & 1))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001431 continue;
1432
1433 /* only use the low order bits */
Jiri Pirko22bedad32010-04-01 21:22:57 +00001434 position = crc32_le(~0, ha->addr, 6) & 0x3f;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001435
1436 /* do some messy swapping to put the bit in the right spot */
1437 multicast_table[invert3[position&7]] |=
1438 (1<<invert3[(position>>3)&7]);
1439 }
1440
1441 /* be sure I get rid of flags I might have set */
1442 lp->rcr_cur_mode &= ~(RCR_PRMS | RCR_ALMUL);
1443
1444 /* now, the table can be loaded into the chipset */
1445 update_multicast = 1;
1446 } else {
1447 DBG(2, "%s: ~(RCR_PRMS|RCR_ALMUL)\n", dev->name);
1448 lp->rcr_cur_mode &= ~(RCR_PRMS | RCR_ALMUL);
1449
1450 /*
1451 * since I'm disabling all multicast entirely, I need to
1452 * clear the multicast list
1453 */
1454 memset(multicast_table, 0, sizeof(multicast_table));
1455 update_multicast = 1;
1456 }
1457
1458 spin_lock_irq(&lp->lock);
Magnus Dammcfdfa862008-02-22 19:55:05 +09001459 SMC_SELECT_BANK(lp, 0);
1460 SMC_SET_RCR(lp, lp->rcr_cur_mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001461 if (update_multicast) {
Magnus Dammcfdfa862008-02-22 19:55:05 +09001462 SMC_SELECT_BANK(lp, 3);
1463 SMC_SET_MCAST(lp, multicast_table);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001464 }
Magnus Dammcfdfa862008-02-22 19:55:05 +09001465 SMC_SELECT_BANK(lp, 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001466 spin_unlock_irq(&lp->lock);
1467}
1468
1469
1470/*
1471 * Open and Initialize the board
1472 *
1473 * Set up everything, reset the card, etc..
1474 */
1475static int
1476smc_open(struct net_device *dev)
1477{
1478 struct smc_local *lp = netdev_priv(dev);
1479
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07001480 DBG(2, "%s: %s\n", dev->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001481
1482 /*
1483 * Check that the address is valid. If its not, refuse
1484 * to bring the device up. The user must specify an
1485 * address using ifconfig eth0 hw ether xx:xx:xx:xx:xx:xx
1486 */
1487 if (!is_valid_ether_addr(dev->dev_addr)) {
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07001488 PRINTK("%s: no valid ethernet hw addr\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001489 return -EINVAL;
1490 }
1491
1492 /* Setup the default Register Modes */
1493 lp->tcr_cur_mode = TCR_DEFAULT;
1494 lp->rcr_cur_mode = RCR_DEFAULT;
Russell Kingb0dbcf52008-09-04 21:13:37 +01001495 lp->rpc_cur_mode = RPC_DEFAULT |
1496 lp->cfg.leda << RPC_LSXA_SHFT |
1497 lp->cfg.ledb << RPC_LSXB_SHFT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001498
1499 /*
1500 * If we are not using a MII interface, we need to
1501 * monitor our own carrier signal to detect faults.
1502 */
1503 if (lp->phy_type == 0)
1504 lp->tcr_cur_mode |= TCR_MON_CSN;
1505
1506 /* reset the hardware */
1507 smc_reset(dev);
1508 smc_enable(dev);
1509
1510 /* Configure the PHY, initialize the link state */
1511 if (lp->phy_type != 0)
David Howells6d5aefb2006-12-05 19:36:26 +00001512 smc_phy_configure(&lp->phy_configure);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001513 else {
1514 spin_lock_irq(&lp->lock);
1515 smc_10bt_check_media(dev, 1);
1516 spin_unlock_irq(&lp->lock);
1517 }
1518
1519 netif_start_queue(dev);
1520 return 0;
1521}
1522
1523/*
1524 * smc_close
1525 *
1526 * this makes the board clean up everything that it can
1527 * and not talk to the outside world. Caused by
1528 * an 'ifconfig ethX down'
1529 */
1530static int smc_close(struct net_device *dev)
1531{
1532 struct smc_local *lp = netdev_priv(dev);
1533
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07001534 DBG(2, "%s: %s\n", dev->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001535
1536 netif_stop_queue(dev);
1537 netif_carrier_off(dev);
1538
1539 /* clear everything */
1540 smc_shutdown(dev);
Nicolas Pitrebe836682005-06-19 23:56:21 -04001541 tasklet_kill(&lp->tx_task);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001542 smc_phy_powerdown(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001543 return 0;
1544}
1545
1546/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07001547 * Ethtool support
1548 */
1549static int
1550smc_ethtool_getsettings(struct net_device *dev, struct ethtool_cmd *cmd)
1551{
1552 struct smc_local *lp = netdev_priv(dev);
1553 int ret;
1554
1555 cmd->maxtxpkt = 1;
1556 cmd->maxrxpkt = 1;
1557
1558 if (lp->phy_type != 0) {
1559 spin_lock_irq(&lp->lock);
1560 ret = mii_ethtool_gset(&lp->mii, cmd);
1561 spin_unlock_irq(&lp->lock);
1562 } else {
1563 cmd->supported = SUPPORTED_10baseT_Half |
1564 SUPPORTED_10baseT_Full |
1565 SUPPORTED_TP | SUPPORTED_AUI;
1566
1567 if (lp->ctl_rspeed == 10)
1568 cmd->speed = SPEED_10;
1569 else if (lp->ctl_rspeed == 100)
1570 cmd->speed = SPEED_100;
1571
1572 cmd->autoneg = AUTONEG_DISABLE;
1573 cmd->transceiver = XCVR_INTERNAL;
1574 cmd->port = 0;
1575 cmd->duplex = lp->tcr_cur_mode & TCR_SWFDUP ? DUPLEX_FULL : DUPLEX_HALF;
1576
1577 ret = 0;
1578 }
1579
1580 return ret;
1581}
1582
1583static int
1584smc_ethtool_setsettings(struct net_device *dev, struct ethtool_cmd *cmd)
1585{
1586 struct smc_local *lp = netdev_priv(dev);
1587 int ret;
1588
1589 if (lp->phy_type != 0) {
1590 spin_lock_irq(&lp->lock);
1591 ret = mii_ethtool_sset(&lp->mii, cmd);
1592 spin_unlock_irq(&lp->lock);
1593 } else {
1594 if (cmd->autoneg != AUTONEG_DISABLE ||
1595 cmd->speed != SPEED_10 ||
1596 (cmd->duplex != DUPLEX_HALF && cmd->duplex != DUPLEX_FULL) ||
1597 (cmd->port != PORT_TP && cmd->port != PORT_AUI))
1598 return -EINVAL;
1599
1600// lp->port = cmd->port;
1601 lp->ctl_rfduplx = cmd->duplex == DUPLEX_FULL;
1602
1603// if (netif_running(dev))
1604// smc_set_port(dev);
1605
1606 ret = 0;
1607 }
1608
1609 return ret;
1610}
1611
1612static void
1613smc_ethtool_getdrvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1614{
1615 strncpy(info->driver, CARDNAME, sizeof(info->driver));
1616 strncpy(info->version, version, sizeof(info->version));
Kay Sieversdb1d7bf2009-01-26 21:12:58 -08001617 strncpy(info->bus_info, dev_name(dev->dev.parent), sizeof(info->bus_info));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001618}
1619
1620static int smc_ethtool_nwayreset(struct net_device *dev)
1621{
1622 struct smc_local *lp = netdev_priv(dev);
1623 int ret = -EINVAL;
1624
1625 if (lp->phy_type != 0) {
1626 spin_lock_irq(&lp->lock);
1627 ret = mii_nway_restart(&lp->mii);
1628 spin_unlock_irq(&lp->lock);
1629 }
1630
1631 return ret;
1632}
1633
1634static u32 smc_ethtool_getmsglevel(struct net_device *dev)
1635{
1636 struct smc_local *lp = netdev_priv(dev);
1637 return lp->msg_enable;
1638}
1639
1640static void smc_ethtool_setmsglevel(struct net_device *dev, u32 level)
1641{
1642 struct smc_local *lp = netdev_priv(dev);
1643 lp->msg_enable = level;
1644}
1645
Vernon Sauder357fe2c2009-01-16 13:23:19 +00001646static int smc_write_eeprom_word(struct net_device *dev, u16 addr, u16 word)
1647{
1648 u16 ctl;
1649 struct smc_local *lp = netdev_priv(dev);
1650 void __iomem *ioaddr = lp->base;
1651
1652 spin_lock_irq(&lp->lock);
1653 /* load word into GP register */
1654 SMC_SELECT_BANK(lp, 1);
1655 SMC_SET_GP(lp, word);
1656 /* set the address to put the data in EEPROM */
1657 SMC_SELECT_BANK(lp, 2);
1658 SMC_SET_PTR(lp, addr);
1659 /* tell it to write */
1660 SMC_SELECT_BANK(lp, 1);
1661 ctl = SMC_GET_CTL(lp);
1662 SMC_SET_CTL(lp, ctl | (CTL_EEPROM_SELECT | CTL_STORE));
1663 /* wait for it to finish */
1664 do {
1665 udelay(1);
1666 } while (SMC_GET_CTL(lp) & CTL_STORE);
1667 /* clean up */
1668 SMC_SET_CTL(lp, ctl);
1669 SMC_SELECT_BANK(lp, 2);
1670 spin_unlock_irq(&lp->lock);
1671 return 0;
1672}
1673
1674static int smc_read_eeprom_word(struct net_device *dev, u16 addr, u16 *word)
1675{
1676 u16 ctl;
1677 struct smc_local *lp = netdev_priv(dev);
1678 void __iomem *ioaddr = lp->base;
1679
1680 spin_lock_irq(&lp->lock);
1681 /* set the EEPROM address to get the data from */
1682 SMC_SELECT_BANK(lp, 2);
1683 SMC_SET_PTR(lp, addr | PTR_READ);
1684 /* tell it to load */
1685 SMC_SELECT_BANK(lp, 1);
1686 SMC_SET_GP(lp, 0xffff); /* init to known */
1687 ctl = SMC_GET_CTL(lp);
1688 SMC_SET_CTL(lp, ctl | (CTL_EEPROM_SELECT | CTL_RELOAD));
1689 /* wait for it to finish */
1690 do {
1691 udelay(1);
1692 } while (SMC_GET_CTL(lp) & CTL_RELOAD);
1693 /* read word from GP register */
1694 *word = SMC_GET_GP(lp);
1695 /* clean up */
1696 SMC_SET_CTL(lp, ctl);
1697 SMC_SELECT_BANK(lp, 2);
1698 spin_unlock_irq(&lp->lock);
1699 return 0;
1700}
1701
1702static int smc_ethtool_geteeprom_len(struct net_device *dev)
1703{
1704 return 0x23 * 2;
1705}
1706
1707static int smc_ethtool_geteeprom(struct net_device *dev,
1708 struct ethtool_eeprom *eeprom, u8 *data)
1709{
1710 int i;
1711 int imax;
1712
1713 DBG(1, "Reading %d bytes at %d(0x%x)\n",
1714 eeprom->len, eeprom->offset, eeprom->offset);
1715 imax = smc_ethtool_geteeprom_len(dev);
1716 for (i = 0; i < eeprom->len; i += 2) {
1717 int ret;
1718 u16 wbuf;
1719 int offset = i + eeprom->offset;
1720 if (offset > imax)
1721 break;
1722 ret = smc_read_eeprom_word(dev, offset >> 1, &wbuf);
1723 if (ret != 0)
1724 return ret;
1725 DBG(2, "Read 0x%x from 0x%x\n", wbuf, offset >> 1);
1726 data[i] = (wbuf >> 8) & 0xff;
1727 data[i+1] = wbuf & 0xff;
1728 }
1729 return 0;
1730}
1731
1732static int smc_ethtool_seteeprom(struct net_device *dev,
1733 struct ethtool_eeprom *eeprom, u8 *data)
1734{
1735 int i;
1736 int imax;
1737
1738 DBG(1, "Writing %d bytes to %d(0x%x)\n",
1739 eeprom->len, eeprom->offset, eeprom->offset);
1740 imax = smc_ethtool_geteeprom_len(dev);
1741 for (i = 0; i < eeprom->len; i += 2) {
1742 int ret;
1743 u16 wbuf;
1744 int offset = i + eeprom->offset;
1745 if (offset > imax)
1746 break;
1747 wbuf = (data[i] << 8) | data[i + 1];
1748 DBG(2, "Writing 0x%x to 0x%x\n", wbuf, offset >> 1);
1749 ret = smc_write_eeprom_word(dev, offset >> 1, wbuf);
1750 if (ret != 0)
1751 return ret;
1752 }
1753 return 0;
1754}
1755
1756
Jeff Garzik7282d492006-09-13 14:30:00 -04001757static const struct ethtool_ops smc_ethtool_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001758 .get_settings = smc_ethtool_getsettings,
1759 .set_settings = smc_ethtool_setsettings,
1760 .get_drvinfo = smc_ethtool_getdrvinfo,
1761
1762 .get_msglevel = smc_ethtool_getmsglevel,
1763 .set_msglevel = smc_ethtool_setmsglevel,
1764 .nway_reset = smc_ethtool_nwayreset,
1765 .get_link = ethtool_op_get_link,
Vernon Sauder357fe2c2009-01-16 13:23:19 +00001766 .get_eeprom_len = smc_ethtool_geteeprom_len,
1767 .get_eeprom = smc_ethtool_geteeprom,
1768 .set_eeprom = smc_ethtool_seteeprom,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001769};
1770
Magnus Damma5280792009-01-26 21:32:25 -08001771static const struct net_device_ops smc_netdev_ops = {
1772 .ndo_open = smc_open,
1773 .ndo_stop = smc_close,
1774 .ndo_start_xmit = smc_hard_start_xmit,
1775 .ndo_tx_timeout = smc_timeout,
1776 .ndo_set_multicast_list = smc_set_multicast_list,
Ben Hutchings635ecaa2009-07-09 17:59:01 +00001777 .ndo_change_mtu = eth_change_mtu,
Magnus Damma5280792009-01-26 21:32:25 -08001778 .ndo_validate_addr = eth_validate_addr,
1779 .ndo_set_mac_address = eth_mac_addr,
1780#ifdef CONFIG_NET_POLL_CONTROLLER
1781 .ndo_poll_controller = smc_poll_controller,
1782#endif
1783};
1784
Linus Torvalds1da177e2005-04-16 15:20:36 -07001785/*
1786 * smc_findirq
1787 *
1788 * This routine has a simple purpose -- make the SMC chip generate an
1789 * interrupt, so an auto-detect routine can detect it, and find the IRQ,
1790 */
1791/*
1792 * does this still work?
1793 *
1794 * I just deleted auto_irq.c, since it was never built...
1795 * --jgarzik
1796 */
Al Virof57628d2008-11-22 17:36:14 +00001797static int __devinit smc_findirq(struct smc_local *lp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001798{
Magnus Dammcfdfa862008-02-22 19:55:05 +09001799 void __iomem *ioaddr = lp->base;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001800 int timeout = 20;
1801 unsigned long cookie;
1802
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07001803 DBG(2, "%s: %s\n", CARDNAME, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001804
1805 cookie = probe_irq_on();
1806
1807 /*
1808 * What I try to do here is trigger an ALLOC_INT. This is done
1809 * by allocating a small chunk of memory, which will give an interrupt
1810 * when done.
1811 */
1812 /* enable ALLOCation interrupts ONLY */
Magnus Dammcfdfa862008-02-22 19:55:05 +09001813 SMC_SELECT_BANK(lp, 2);
1814 SMC_SET_INT_MASK(lp, IM_ALLOC_INT);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001815
1816 /*
1817 * Allocate 512 bytes of memory. Note that the chip was just
1818 * reset so all the memory is available
1819 */
Magnus Dammcfdfa862008-02-22 19:55:05 +09001820 SMC_SET_MMU_CMD(lp, MC_ALLOC | 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001821
1822 /*
1823 * Wait until positive that the interrupt has been generated
1824 */
1825 do {
1826 int int_status;
1827 udelay(10);
Magnus Dammcfdfa862008-02-22 19:55:05 +09001828 int_status = SMC_GET_INT(lp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001829 if (int_status & IM_ALLOC_INT)
1830 break; /* got the interrupt */
1831 } while (--timeout);
1832
1833 /*
1834 * there is really nothing that I can do here if timeout fails,
1835 * as autoirq_report will return a 0 anyway, which is what I
1836 * want in this case. Plus, the clean up is needed in both
1837 * cases.
1838 */
1839
1840 /* and disable all interrupts again */
Magnus Dammcfdfa862008-02-22 19:55:05 +09001841 SMC_SET_INT_MASK(lp, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001842
1843 /* and return what I found */
1844 return probe_irq_off(cookie);
1845}
1846
1847/*
1848 * Function: smc_probe(unsigned long ioaddr)
1849 *
1850 * Purpose:
1851 * Tests to see if a given ioaddr points to an SMC91x chip.
1852 * Returns a 0 on success
1853 *
1854 * Algorithm:
1855 * (1) see if the high byte of BANK_SELECT is 0x33
1856 * (2) compare the ioaddr with the base register's address
1857 * (3) see if I recognize the chip ID in the appropriate register
1858 *
1859 * Here I do typical initialization tasks.
1860 *
1861 * o Initialize the structure if needed
1862 * o print out my vanity message if not done so already
1863 * o print out what type of hardware is detected
1864 * o print out the ethernet address
1865 * o find the IRQ
1866 * o set up my private data
1867 * o configure the dev structure with my subroutines
1868 * o actually GRAB the irq.
1869 * o GRAB the region
1870 */
Al Virof57628d2008-11-22 17:36:14 +00001871static int __devinit smc_probe(struct net_device *dev, void __iomem *ioaddr,
Russell Kinge7b3dc72008-01-14 22:30:10 +00001872 unsigned long irq_flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001873{
1874 struct smc_local *lp = netdev_priv(dev);
1875 static int version_printed = 0;
Joe Perches0795af52007-10-03 17:59:30 -07001876 int retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001877 unsigned int val, revision_register;
1878 const char *version_string;
1879
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07001880 DBG(2, "%s: %s\n", CARDNAME, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001881
1882 /* First, see if the high byte is 0x33 */
Magnus Dammcfdfa862008-02-22 19:55:05 +09001883 val = SMC_CURRENT_BANK(lp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001884 DBG(2, "%s: bank signature probe returned 0x%04x\n", CARDNAME, val);
1885 if ((val & 0xFF00) != 0x3300) {
1886 if ((val & 0xFF) == 0x33) {
1887 printk(KERN_WARNING
1888 "%s: Detected possible byte-swapped interface"
1889 " at IOADDR %p\n", CARDNAME, ioaddr);
1890 }
1891 retval = -ENODEV;
1892 goto err_out;
1893 }
1894
1895 /*
1896 * The above MIGHT indicate a device, but I need to write to
1897 * further test this.
1898 */
Magnus Dammcfdfa862008-02-22 19:55:05 +09001899 SMC_SELECT_BANK(lp, 0);
1900 val = SMC_CURRENT_BANK(lp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001901 if ((val & 0xFF00) != 0x3300) {
1902 retval = -ENODEV;
1903 goto err_out;
1904 }
1905
1906 /*
1907 * well, we've already written once, so hopefully another
1908 * time won't hurt. This time, I need to switch the bank
1909 * register to bank 1, so I can access the base address
1910 * register
1911 */
Magnus Dammcfdfa862008-02-22 19:55:05 +09001912 SMC_SELECT_BANK(lp, 1);
1913 val = SMC_GET_BASE(lp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001914 val = ((val & 0x1F00) >> 3) << SMC_IO_SHIFT;
Nicolas Pitre53155102005-05-12 20:18:19 -04001915 if (((unsigned int)ioaddr & (0x3e0 << SMC_IO_SHIFT)) != val) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001916 printk("%s: IOADDR %p doesn't match configuration (%x).\n",
1917 CARDNAME, ioaddr, val);
1918 }
1919
1920 /*
1921 * check if the revision register is something that I
1922 * recognize. These might need to be added to later,
1923 * as future revisions could be added.
1924 */
Magnus Dammcfdfa862008-02-22 19:55:05 +09001925 SMC_SELECT_BANK(lp, 3);
1926 revision_register = SMC_GET_REV(lp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001927 DBG(2, "%s: revision = 0x%04x\n", CARDNAME, revision_register);
1928 version_string = chip_ids[ (revision_register >> 4) & 0xF];
1929 if (!version_string || (revision_register & 0xff00) != 0x3300) {
1930 /* I don't recognize this chip, so... */
1931 printk("%s: IO %p: Unrecognized revision register 0x%04x"
1932 ", Contact author.\n", CARDNAME,
1933 ioaddr, revision_register);
1934
1935 retval = -ENODEV;
1936 goto err_out;
1937 }
1938
1939 /* At this point I'll assume that the chip is an SMC91x. */
1940 if (version_printed++ == 0)
1941 printk("%s", version);
1942
1943 /* fill in some of the fields */
1944 dev->base_addr = (unsigned long)ioaddr;
1945 lp->base = ioaddr;
1946 lp->version = revision_register & 0xff;
1947 spin_lock_init(&lp->lock);
1948
1949 /* Get the MAC address */
Magnus Dammcfdfa862008-02-22 19:55:05 +09001950 SMC_SELECT_BANK(lp, 1);
1951 SMC_GET_MAC_ADDR(lp, dev->dev_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001952
1953 /* now, reset the chip, and put it into a known state */
1954 smc_reset(dev);
1955
1956 /*
1957 * If dev->irq is 0, then the device has to be banged on to see
1958 * what the IRQ is.
1959 *
1960 * This banging doesn't always detect the IRQ, for unknown reasons.
1961 * a workaround is to reset the chip and try again.
1962 *
1963 * Interestingly, the DOS packet driver *SETS* the IRQ on the card to
1964 * be what is requested on the command line. I don't do that, mostly
1965 * because the card that I have uses a non-standard method of accessing
1966 * the IRQs, and because this _should_ work in most configurations.
1967 *
1968 * Specifying an IRQ is done with the assumption that the user knows
1969 * what (s)he is doing. No checking is done!!!!
1970 */
1971 if (dev->irq < 1) {
1972 int trials;
1973
1974 trials = 3;
1975 while (trials--) {
Magnus Dammcfdfa862008-02-22 19:55:05 +09001976 dev->irq = smc_findirq(lp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001977 if (dev->irq)
1978 break;
1979 /* kick the card and try again */
1980 smc_reset(dev);
1981 }
1982 }
1983 if (dev->irq == 0) {
1984 printk("%s: Couldn't autodetect your IRQ. Use irq=xx.\n",
1985 dev->name);
1986 retval = -ENODEV;
1987 goto err_out;
1988 }
1989 dev->irq = irq_canonicalize(dev->irq);
1990
1991 /* Fill in the fields of the device structure with ethernet values. */
1992 ether_setup(dev);
1993
Linus Torvalds1da177e2005-04-16 15:20:36 -07001994 dev->watchdog_timeo = msecs_to_jiffies(watchdog);
Magnus Damma5280792009-01-26 21:32:25 -08001995 dev->netdev_ops = &smc_netdev_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001996 dev->ethtool_ops = &smc_ethtool_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001997
1998 tasklet_init(&lp->tx_task, smc_hardware_send_pkt, (unsigned long)dev);
David Howells6d5aefb2006-12-05 19:36:26 +00001999 INIT_WORK(&lp->phy_configure, smc_phy_configure);
2000 lp->dev = dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002001 lp->mii.phy_id_mask = 0x1f;
2002 lp->mii.reg_num_mask = 0x1f;
2003 lp->mii.force_media = 0;
2004 lp->mii.full_duplex = 0;
2005 lp->mii.dev = dev;
2006 lp->mii.mdio_read = smc_phy_read;
2007 lp->mii.mdio_write = smc_phy_write;
2008
2009 /*
2010 * Locate the phy, if any.
2011 */
2012 if (lp->version >= (CHIP_91100 << 4))
2013 smc_phy_detect(dev);
2014
Nicolas Pitre99e1baf2005-10-05 11:10:24 -04002015 /* then shut everything down to save power */
2016 smc_shutdown(dev);
2017 smc_phy_powerdown(dev);
2018
Linus Torvalds1da177e2005-04-16 15:20:36 -07002019 /* Set default parameters */
2020 lp->msg_enable = NETIF_MSG_LINK;
2021 lp->ctl_rfduplx = 0;
2022 lp->ctl_rspeed = 10;
2023
2024 if (lp->version >= (CHIP_91100 << 4)) {
2025 lp->ctl_rfduplx = 1;
2026 lp->ctl_rspeed = 100;
2027 }
2028
2029 /* Grab the IRQ */
Joe Perchesa0607fd2009-11-18 23:29:17 -08002030 retval = request_irq(dev->irq, smc_interrupt, irq_flags, dev->name, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002031 if (retval)
2032 goto err_out;
2033
Eric Miao52256c02008-06-24 15:36:05 +08002034#ifdef CONFIG_ARCH_PXA
2035# ifdef SMC_USE_PXA_DMA
2036 lp->cfg.flags |= SMC91X_USE_DMA;
2037# endif
2038 if (lp->cfg.flags & SMC91X_USE_DMA) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002039 int dma = pxa_request_dma(dev->name, DMA_PRIO_LOW,
2040 smc_pxa_dma_irq, NULL);
2041 if (dma >= 0)
2042 dev->dma = dma;
2043 }
2044#endif
2045
2046 retval = register_netdev(dev);
2047 if (retval == 0) {
2048 /* now, print out the card info, in a short format.. */
2049 printk("%s: %s (rev %d) at %p IRQ %d",
2050 dev->name, version_string, revision_register & 0x0f,
2051 lp->base, dev->irq);
2052
2053 if (dev->dma != (unsigned char)-1)
2054 printk(" DMA %d", dev->dma);
2055
Magnus Dammd6bc3722008-09-08 14:02:56 +09002056 printk("%s%s\n",
2057 lp->cfg.flags & SMC91X_NOWAIT ? " [nowait]" : "",
Linus Torvalds1da177e2005-04-16 15:20:36 -07002058 THROTTLE_TX_PKTS ? " [throttle_tx]" : "");
2059
2060 if (!is_valid_ether_addr(dev->dev_addr)) {
2061 printk("%s: Invalid ethernet MAC address. Please "
2062 "set using ifconfig\n", dev->name);
2063 } else {
2064 /* Print the Ethernet address */
Johannes Berge1749612008-10-27 15:59:26 -07002065 printk("%s: Ethernet addr: %pM\n",
2066 dev->name, dev->dev_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002067 }
2068
2069 if (lp->phy_type == 0) {
2070 PRINTK("%s: No PHY found\n", dev->name);
2071 } else if ((lp->phy_type & 0xfffffff0) == 0x0016f840) {
2072 PRINTK("%s: PHY LAN83C183 (LAN91C111 Internal)\n", dev->name);
2073 } else if ((lp->phy_type & 0xfffffff0) == 0x02821c50) {
2074 PRINTK("%s: PHY LAN83C180\n", dev->name);
2075 }
2076 }
2077
2078err_out:
Eric Miao52256c02008-06-24 15:36:05 +08002079#ifdef CONFIG_ARCH_PXA
Linus Torvalds1da177e2005-04-16 15:20:36 -07002080 if (retval && dev->dma != (unsigned char)-1)
2081 pxa_free_dma(dev->dma);
2082#endif
2083 return retval;
2084}
2085
2086static int smc_enable_device(struct platform_device *pdev)
2087{
Magnus Damm3e947942008-02-22 19:55:15 +09002088 struct net_device *ndev = platform_get_drvdata(pdev);
2089 struct smc_local *lp = netdev_priv(ndev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002090 unsigned long flags;
2091 unsigned char ecor, ecsr;
2092 void __iomem *addr;
2093 struct resource * res;
2094
2095 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-attrib");
2096 if (!res)
2097 return 0;
2098
2099 /*
2100 * Map the attribute space. This is overkill, but clean.
2101 */
2102 addr = ioremap(res->start, ATTRIB_SIZE);
2103 if (!addr)
2104 return -ENOMEM;
2105
2106 /*
2107 * Reset the device. We must disable IRQs around this
2108 * since a reset causes the IRQ line become active.
2109 */
2110 local_irq_save(flags);
2111 ecor = readb(addr + (ECOR << SMC_IO_SHIFT)) & ~ECOR_RESET;
2112 writeb(ecor | ECOR_RESET, addr + (ECOR << SMC_IO_SHIFT));
2113 readb(addr + (ECOR << SMC_IO_SHIFT));
2114
2115 /*
2116 * Wait 100us for the chip to reset.
2117 */
2118 udelay(100);
2119
2120 /*
2121 * The device will ignore all writes to the enable bit while
2122 * reset is asserted, even if the reset bit is cleared in the
2123 * same write. Must clear reset first, then enable the device.
2124 */
2125 writeb(ecor, addr + (ECOR << SMC_IO_SHIFT));
2126 writeb(ecor | ECOR_ENABLE, addr + (ECOR << SMC_IO_SHIFT));
2127
2128 /*
2129 * Set the appropriate byte/word mode.
2130 */
2131 ecsr = readb(addr + (ECSR << SMC_IO_SHIFT)) & ~ECSR_IOIS8;
Magnus Damm3e947942008-02-22 19:55:15 +09002132 if (!SMC_16BIT(lp))
Nicolas Pitre09779c62006-03-20 11:54:27 -05002133 ecsr |= ECSR_IOIS8;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002134 writeb(ecsr, addr + (ECSR << SMC_IO_SHIFT));
2135 local_irq_restore(flags);
2136
2137 iounmap(addr);
2138
2139 /*
2140 * Wait for the chip to wake up. We could poll the control
2141 * register in the main register space, but that isn't mapped
2142 * yet. We know this is going to take 750us.
2143 */
2144 msleep(1);
2145
2146 return 0;
2147}
2148
Eric Miao15919882008-06-24 13:38:50 +08002149static int smc_request_attrib(struct platform_device *pdev,
2150 struct net_device *ndev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002151{
2152 struct resource * res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-attrib");
David S. Miller55c8eb62008-11-03 00:04:24 -08002153 struct smc_local *lp __maybe_unused = netdev_priv(ndev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002154
2155 if (!res)
2156 return 0;
2157
2158 if (!request_mem_region(res->start, ATTRIB_SIZE, CARDNAME))
2159 return -EBUSY;
2160
2161 return 0;
2162}
2163
Eric Miao15919882008-06-24 13:38:50 +08002164static void smc_release_attrib(struct platform_device *pdev,
2165 struct net_device *ndev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002166{
2167 struct resource * res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-attrib");
David S. Miller55c8eb62008-11-03 00:04:24 -08002168 struct smc_local *lp __maybe_unused = netdev_priv(ndev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002169
2170 if (res)
2171 release_mem_region(res->start, ATTRIB_SIZE);
2172}
2173
Nicolas Pitre09779c62006-03-20 11:54:27 -05002174static inline void smc_request_datacs(struct platform_device *pdev, struct net_device *ndev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002175{
Nicolas Pitre09779c62006-03-20 11:54:27 -05002176 if (SMC_CAN_USE_DATACS) {
2177 struct resource * res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-data32");
2178 struct smc_local *lp = netdev_priv(ndev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002179
Nicolas Pitre09779c62006-03-20 11:54:27 -05002180 if (!res)
2181 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002182
Nicolas Pitre09779c62006-03-20 11:54:27 -05002183 if(!request_mem_region(res->start, SMC_DATA_EXTENT, CARDNAME)) {
2184 printk(KERN_INFO "%s: failed to request datacs memory region.\n", CARDNAME);
2185 return;
2186 }
2187
2188 lp->datacs = ioremap(res->start, SMC_DATA_EXTENT);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002189 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002190}
2191
2192static void smc_release_datacs(struct platform_device *pdev, struct net_device *ndev)
2193{
Nicolas Pitre09779c62006-03-20 11:54:27 -05002194 if (SMC_CAN_USE_DATACS) {
2195 struct smc_local *lp = netdev_priv(ndev);
2196 struct resource * res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-data32");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002197
Nicolas Pitre09779c62006-03-20 11:54:27 -05002198 if (lp->datacs)
2199 iounmap(lp->datacs);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002200
Nicolas Pitre09779c62006-03-20 11:54:27 -05002201 lp->datacs = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002202
Nicolas Pitre09779c62006-03-20 11:54:27 -05002203 if (res)
2204 release_mem_region(res->start, SMC_DATA_EXTENT);
2205 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002206}
Linus Torvalds1da177e2005-04-16 15:20:36 -07002207
2208/*
2209 * smc_init(void)
2210 * Input parameters:
2211 * dev->base_addr == 0, try to find all possible locations
2212 * dev->base_addr > 0x1ff, this is the address to check
2213 * dev->base_addr == <anything else>, return failure code
2214 *
2215 * Output:
2216 * 0 --> there is a device
2217 * anything else, error
2218 */
Al Virof57628d2008-11-22 17:36:14 +00002219static int __devinit smc_drv_probe(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002220{
Magnus Damm3e947942008-02-22 19:55:15 +09002221 struct smc91x_platdata *pd = pdev->dev.platform_data;
2222 struct smc_local *lp;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002223 struct net_device *ndev;
Russell Kinge7b3dc72008-01-14 22:30:10 +00002224 struct resource *res, *ires;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002225 unsigned int __iomem *addr;
Eric Miaod280ead2008-06-06 17:13:02 +08002226 unsigned long irq_flags = SMC_IRQ_FLAGS;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002227 int ret;
2228
Linus Torvalds1da177e2005-04-16 15:20:36 -07002229 ndev = alloc_etherdev(sizeof(struct smc_local));
2230 if (!ndev) {
2231 printk("%s: could not allocate device.\n", CARDNAME);
2232 ret = -ENOMEM;
Eric Miao15919882008-06-24 13:38:50 +08002233 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002234 }
Russell King3ae5eae2005-11-09 22:32:44 +00002235 SET_NETDEV_DEV(ndev, &pdev->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002236
Magnus Damm3e947942008-02-22 19:55:15 +09002237 /* get configuration from platform data, only allow use of
2238 * bus width if both SMC_CAN_USE_xxx and SMC91X_USE_xxx are set.
2239 */
2240
2241 lp = netdev_priv(ndev);
Magnus Damm3e947942008-02-22 19:55:15 +09002242
Eric Miao15919882008-06-24 13:38:50 +08002243 if (pd) {
Magnus Damm3e947942008-02-22 19:55:15 +09002244 memcpy(&lp->cfg, pd, sizeof(lp->cfg));
Eric Miao15919882008-06-24 13:38:50 +08002245 lp->io_shift = SMC91X_IO_SHIFT(lp->cfg.flags);
2246 } else {
Eric Miaofa6d3be2008-06-19 17:19:57 +08002247 lp->cfg.flags |= (SMC_CAN_USE_8BIT) ? SMC91X_USE_8BIT : 0;
2248 lp->cfg.flags |= (SMC_CAN_USE_16BIT) ? SMC91X_USE_16BIT : 0;
2249 lp->cfg.flags |= (SMC_CAN_USE_32BIT) ? SMC91X_USE_32BIT : 0;
Eric Miaoc4f0e762008-06-19 17:39:03 +08002250 lp->cfg.flags |= (nowait) ? SMC91X_NOWAIT : 0;
Magnus Damm3e947942008-02-22 19:55:15 +09002251 }
2252
Russell Kingb0dbcf52008-09-04 21:13:37 +01002253 if (!lp->cfg.leda && !lp->cfg.ledb) {
2254 lp->cfg.leda = RPC_LSA_DEFAULT;
2255 lp->cfg.ledb = RPC_LSB_DEFAULT;
2256 }
2257
Linus Torvalds1da177e2005-04-16 15:20:36 -07002258 ndev->dma = (unsigned char)-1;
Russell Kinge7b3dc72008-01-14 22:30:10 +00002259
Eric Miao15919882008-06-24 13:38:50 +08002260 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-regs");
2261 if (!res)
2262 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2263 if (!res) {
2264 ret = -ENODEV;
2265 goto out_free_netdev;
2266 }
2267
2268
2269 if (!request_mem_region(res->start, SMC_IO_EXTENT, CARDNAME)) {
2270 ret = -EBUSY;
2271 goto out_free_netdev;
2272 }
2273
Russell Kinge7b3dc72008-01-14 22:30:10 +00002274 ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
2275 if (!ires) {
David Vrabel48944732006-01-19 17:56:29 +00002276 ret = -ENODEV;
Eric Miao15919882008-06-24 13:38:50 +08002277 goto out_release_io;
David Vrabel48944732006-01-19 17:56:29 +00002278 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002279
Russell Kinge7b3dc72008-01-14 22:30:10 +00002280 ndev->irq = ires->start;
Eric Miaod280ead2008-06-06 17:13:02 +08002281
Russell King - ARM Linuxd5ccd672009-11-28 00:13:23 +00002282 if (irq_flags == -1 || ires->flags & IRQF_TRIGGER_MASK)
Eric Miaod280ead2008-06-06 17:13:02 +08002283 irq_flags = ires->flags & IRQF_TRIGGER_MASK;
Russell Kinge7b3dc72008-01-14 22:30:10 +00002284
Eric Miao15919882008-06-24 13:38:50 +08002285 ret = smc_request_attrib(pdev, ndev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002286 if (ret)
Eric Miao15919882008-06-24 13:38:50 +08002287 goto out_release_io;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002288#if defined(CONFIG_SA1100_ASSABET)
2289 NCR_0 |= NCR_ENET_OSC_EN;
2290#endif
Magnus Damm3e947942008-02-22 19:55:15 +09002291 platform_set_drvdata(pdev, ndev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002292 ret = smc_enable_device(pdev);
2293 if (ret)
2294 goto out_release_attrib;
2295
2296 addr = ioremap(res->start, SMC_IO_EXTENT);
2297 if (!addr) {
2298 ret = -ENOMEM;
2299 goto out_release_attrib;
2300 }
2301
Eric Miao52256c02008-06-24 15:36:05 +08002302#ifdef CONFIG_ARCH_PXA
Russell King073ac8f2007-09-01 21:27:18 +01002303 {
2304 struct smc_local *lp = netdev_priv(ndev);
2305 lp->device = &pdev->dev;
2306 lp->physaddr = res->start;
2307 }
2308#endif
2309
Eric Miaod280ead2008-06-06 17:13:02 +08002310 ret = smc_probe(ndev, addr, irq_flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002311 if (ret != 0)
2312 goto out_iounmap;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002313
2314 smc_request_datacs(pdev, ndev);
2315
2316 return 0;
2317
2318 out_iounmap:
Russell King3ae5eae2005-11-09 22:32:44 +00002319 platform_set_drvdata(pdev, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002320 iounmap(addr);
2321 out_release_attrib:
Eric Miao15919882008-06-24 13:38:50 +08002322 smc_release_attrib(pdev, ndev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002323 out_release_io:
2324 release_mem_region(res->start, SMC_IO_EXTENT);
Eric Miao15919882008-06-24 13:38:50 +08002325 out_free_netdev:
2326 free_netdev(ndev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002327 out:
2328 printk("%s: not found (%d).\n", CARDNAME, ret);
2329
2330 return ret;
2331}
2332
Al Virof57628d2008-11-22 17:36:14 +00002333static int __devexit smc_drv_remove(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002334{
Russell King3ae5eae2005-11-09 22:32:44 +00002335 struct net_device *ndev = platform_get_drvdata(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002336 struct smc_local *lp = netdev_priv(ndev);
2337 struct resource *res;
2338
Russell King3ae5eae2005-11-09 22:32:44 +00002339 platform_set_drvdata(pdev, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002340
2341 unregister_netdev(ndev);
2342
2343 free_irq(ndev->irq, ndev);
2344
Eric Miao52256c02008-06-24 15:36:05 +08002345#ifdef CONFIG_ARCH_PXA
Linus Torvalds1da177e2005-04-16 15:20:36 -07002346 if (ndev->dma != (unsigned char)-1)
2347 pxa_free_dma(ndev->dma);
2348#endif
2349 iounmap(lp->base);
2350
2351 smc_release_datacs(pdev,ndev);
Eric Miao15919882008-06-24 13:38:50 +08002352 smc_release_attrib(pdev,ndev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002353
2354 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-regs");
2355 if (!res)
Jeff Garzik6fc30db2008-08-27 05:54:30 -04002356 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002357 release_mem_region(res->start, SMC_IO_EXTENT);
2358
2359 free_netdev(ndev);
2360
2361 return 0;
2362}
2363
Kevin Hilman9f950f72009-11-24 12:57:47 +00002364static int smc_drv_suspend(struct device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002365{
Kevin Hilman9f950f72009-11-24 12:57:47 +00002366 struct platform_device *pdev = to_platform_device(dev);
2367 struct net_device *ndev = platform_get_drvdata(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002368
Russell King9480e302005-10-28 09:52:56 -07002369 if (ndev) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002370 if (netif_running(ndev)) {
2371 netif_device_detach(ndev);
2372 smc_shutdown(ndev);
2373 smc_phy_powerdown(ndev);
2374 }
2375 }
2376 return 0;
2377}
2378
Kevin Hilman9f950f72009-11-24 12:57:47 +00002379static int smc_drv_resume(struct device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002380{
Kevin Hilman9f950f72009-11-24 12:57:47 +00002381 struct platform_device *pdev = to_platform_device(dev);
2382 struct net_device *ndev = platform_get_drvdata(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002383
Russell King9480e302005-10-28 09:52:56 -07002384 if (ndev) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002385 struct smc_local *lp = netdev_priv(ndev);
Paul Mundt5fc34412009-12-10 20:42:27 +00002386 smc_enable_device(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002387 if (netif_running(ndev)) {
2388 smc_reset(ndev);
2389 smc_enable(ndev);
2390 if (lp->phy_type != 0)
David Howells6d5aefb2006-12-05 19:36:26 +00002391 smc_phy_configure(&lp->phy_configure);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002392 netif_device_attach(ndev);
2393 }
2394 }
2395 return 0;
2396}
2397
Thomas Chou682a1692011-01-25 19:22:05 +00002398#ifdef CONFIG_OF
2399static const struct of_device_id smc91x_match[] = {
2400 { .compatible = "smsc,lan91c94", },
2401 { .compatible = "smsc,lan91c111", },
2402 {},
2403}
2404MODULE_DEVICE_TABLE(of, smc91x_match);
2405#endif
2406
Kevin Hilman9f950f72009-11-24 12:57:47 +00002407static struct dev_pm_ops smc_drv_pm_ops = {
2408 .suspend = smc_drv_suspend,
2409 .resume = smc_drv_resume,
2410};
2411
Russell King3ae5eae2005-11-09 22:32:44 +00002412static struct platform_driver smc_driver = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002413 .probe = smc_drv_probe,
Al Virof57628d2008-11-22 17:36:14 +00002414 .remove = __devexit_p(smc_drv_remove),
Russell King3ae5eae2005-11-09 22:32:44 +00002415 .driver = {
2416 .name = CARDNAME,
Kay Sievers72abb462008-04-18 13:50:44 -07002417 .owner = THIS_MODULE,
Kevin Hilman9f950f72009-11-24 12:57:47 +00002418 .pm = &smc_drv_pm_ops,
Thomas Chou682a1692011-01-25 19:22:05 +00002419#ifdef CONFIG_OF
2420 .of_match_table = smc91x_match,
2421#endif
Russell King3ae5eae2005-11-09 22:32:44 +00002422 },
Linus Torvalds1da177e2005-04-16 15:20:36 -07002423};
2424
2425static int __init smc_init(void)
2426{
Russell King3ae5eae2005-11-09 22:32:44 +00002427 return platform_driver_register(&smc_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002428}
2429
2430static void __exit smc_cleanup(void)
2431{
Russell King3ae5eae2005-11-09 22:32:44 +00002432 platform_driver_unregister(&smc_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002433}
2434
2435module_init(smc_init);
2436module_exit(smc_cleanup);