blob: 293610334a778b2ca81c4af52a2b8e391d13b204 [file] [log] [blame]
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001/*
2 * smc911x.c
3 * This is a driver for SMSC's LAN911{5,6,7,8} single-chip Ethernet devices.
4 *
5 * Copyright (C) 2005 Sensoria Corp
6 * Derived from the unified SMC91x driver by Nicolas Pitre
Jeff Garzikd5498be2006-04-20 17:39:14 -04007 * and the smsc911x.c reference driver by SMSC
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07008 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 *
23 * Arguments:
24 * watchdog = TX watchdog timeout
25 * tx_fifo_kb = Size of TX FIFO in KB
26 *
27 * History:
28 * 04/16/05 Dustin McIntire Initial version
29 */
30static const char version[] =
31 "smc911x.c: v1.0 04-16-2005 by Dustin McIntire <dustin@sensoria.com>\n";
32
33/* Debugging options */
34#define ENABLE_SMC_DEBUG_RX 0
35#define ENABLE_SMC_DEBUG_TX 0
36#define ENABLE_SMC_DEBUG_DMA 0
37#define ENABLE_SMC_DEBUG_PKTS 0
38#define ENABLE_SMC_DEBUG_MISC 0
39#define ENABLE_SMC_DEBUG_FUNC 0
40
41#define SMC_DEBUG_RX ((ENABLE_SMC_DEBUG_RX ? 1 : 0) << 0)
42#define SMC_DEBUG_TX ((ENABLE_SMC_DEBUG_TX ? 1 : 0) << 1)
43#define SMC_DEBUG_DMA ((ENABLE_SMC_DEBUG_DMA ? 1 : 0) << 2)
44#define SMC_DEBUG_PKTS ((ENABLE_SMC_DEBUG_PKTS ? 1 : 0) << 3)
45#define SMC_DEBUG_MISC ((ENABLE_SMC_DEBUG_MISC ? 1 : 0) << 4)
46#define SMC_DEBUG_FUNC ((ENABLE_SMC_DEBUG_FUNC ? 1 : 0) << 5)
47
48#ifndef SMC_DEBUG
49#define SMC_DEBUG ( SMC_DEBUG_RX | \
50 SMC_DEBUG_TX | \
51 SMC_DEBUG_DMA | \
52 SMC_DEBUG_PKTS | \
53 SMC_DEBUG_MISC | \
54 SMC_DEBUG_FUNC \
55 )
56#endif
57
Dustin McIntire0a0c72c2006-04-19 20:24:51 -070058#include <linux/init.h>
59#include <linux/module.h>
60#include <linux/kernel.h>
61#include <linux/sched.h>
62#include <linux/slab.h>
63#include <linux/delay.h>
64#include <linux/interrupt.h>
65#include <linux/errno.h>
66#include <linux/ioport.h>
67#include <linux/crc32.h>
68#include <linux/device.h>
69#include <linux/platform_device.h>
70#include <linux/spinlock.h>
71#include <linux/ethtool.h>
72#include <linux/mii.h>
73#include <linux/workqueue.h>
74
75#include <linux/netdevice.h>
76#include <linux/etherdevice.h>
77#include <linux/skbuff.h>
78
79#include <asm/io.h>
Dustin McIntire0a0c72c2006-04-19 20:24:51 -070080
81#include "smc911x.h"
82
83/*
84 * Transmit timeout, default 5 seconds.
85 */
86static int watchdog = 5000;
87module_param(watchdog, int, 0400);
88MODULE_PARM_DESC(watchdog, "transmit timeout in milliseconds");
89
90static int tx_fifo_kb=8;
91module_param(tx_fifo_kb, int, 0400);
92MODULE_PARM_DESC(tx_fifo_kb,"transmit FIFO size in KB (1<x<15)(default=8)");
93
94MODULE_LICENSE("GPL");
Kay Sievers72abb462008-04-18 13:50:44 -070095MODULE_ALIAS("platform:smc911x");
Dustin McIntire0a0c72c2006-04-19 20:24:51 -070096
97/*
98 * The internal workings of the driver. If you are changing anything
99 * here with the SMC stuff, you should have the datasheet and know
100 * what you are doing.
101 */
102#define CARDNAME "smc911x"
103
104/*
105 * Use power-down feature of the chip
106 */
107#define POWER_DOWN 1
108
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700109#if SMC_DEBUG > 0
110#define DBG(n, args...) \
111 do { \
112 if (SMC_DEBUG & (n)) \
113 printk(args); \
114 } while (0)
115
116#define PRINTK(args...) printk(args)
117#else
118#define DBG(n, args...) do { } while (0)
119#define PRINTK(args...) printk(KERN_DEBUG args)
120#endif
121
122#if SMC_DEBUG_PKTS > 0
123static void PRINT_PKT(u_char *buf, int length)
124{
125 int i;
126 int remainder;
127 int lines;
128
129 lines = length / 16;
130 remainder = length % 16;
131
132 for (i = 0; i < lines ; i ++) {
133 int cur;
134 for (cur = 0; cur < 8; cur++) {
135 u_char a, b;
136 a = *buf++;
137 b = *buf++;
138 printk("%02x%02x ", a, b);
139 }
140 printk("\n");
141 }
142 for (i = 0; i < remainder/2 ; i++) {
143 u_char a, b;
144 a = *buf++;
145 b = *buf++;
146 printk("%02x%02x ", a, b);
147 }
148 printk("\n");
149}
150#else
151#define PRINT_PKT(x...) do { } while (0)
152#endif
153
154
155/* this enables an interrupt in the interrupt mask register */
Magnus Damm699559f2008-06-09 16:33:54 -0700156#define SMC_ENABLE_INT(lp, x) do { \
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700157 unsigned int __mask; \
Magnus Damm699559f2008-06-09 16:33:54 -0700158 __mask = SMC_GET_INT_EN((lp)); \
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700159 __mask |= (x); \
Magnus Damm699559f2008-06-09 16:33:54 -0700160 SMC_SET_INT_EN((lp), __mask); \
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700161} while (0)
162
163/* this disables an interrupt from the interrupt mask register */
Magnus Damm699559f2008-06-09 16:33:54 -0700164#define SMC_DISABLE_INT(lp, x) do { \
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700165 unsigned int __mask; \
Magnus Damm699559f2008-06-09 16:33:54 -0700166 __mask = SMC_GET_INT_EN((lp)); \
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700167 __mask &= ~(x); \
Magnus Damm699559f2008-06-09 16:33:54 -0700168 SMC_SET_INT_EN((lp), __mask); \
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700169} while (0)
170
171/*
172 * this does a soft reset on the device
173 */
174static void smc911x_reset(struct net_device *dev)
175{
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700176 struct smc911x_local *lp = netdev_priv(dev);
Catalin Marinas319edaf2008-10-20 18:15:30 +0100177 unsigned int reg, timeout=0, resets=1, irq_cfg;
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700178 unsigned long flags;
179
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700180 DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __func__);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700181
182 /* Take out of PM setting first */
Magnus Damm699559f2008-06-09 16:33:54 -0700183 if ((SMC_GET_PMT_CTRL(lp) & PMT_CTRL_READY_) == 0) {
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700184 /* Write to the bytetest will take out of powerdown */
Magnus Damm699559f2008-06-09 16:33:54 -0700185 SMC_SET_BYTE_TEST(lp, 0);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700186 timeout=10;
187 do {
188 udelay(10);
Magnus Damm699559f2008-06-09 16:33:54 -0700189 reg = SMC_GET_PMT_CTRL(lp) & PMT_CTRL_READY_;
Roel Kluindb2961c2008-04-18 13:50:48 -0700190 } while (--timeout && !reg);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700191 if (timeout == 0) {
192 PRINTK("%s: smc911x_reset timeout waiting for PM restore\n", dev->name);
193 return;
194 }
195 }
196
197 /* Disable all interrupts */
198 spin_lock_irqsave(&lp->lock, flags);
Magnus Damm699559f2008-06-09 16:33:54 -0700199 SMC_SET_INT_EN(lp, 0);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700200 spin_unlock_irqrestore(&lp->lock, flags);
201
202 while (resets--) {
Magnus Damm699559f2008-06-09 16:33:54 -0700203 SMC_SET_HW_CFG(lp, HW_CFG_SRST_);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700204 timeout=10;
205 do {
206 udelay(10);
Magnus Damm699559f2008-06-09 16:33:54 -0700207 reg = SMC_GET_HW_CFG(lp);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700208 /* If chip indicates reset timeout then try again */
209 if (reg & HW_CFG_SRST_TO_) {
210 PRINTK("%s: chip reset timeout, retrying...\n", dev->name);
211 resets++;
212 break;
213 }
Roel Kluindb2961c2008-04-18 13:50:48 -0700214 } while (--timeout && (reg & HW_CFG_SRST_));
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700215 }
216 if (timeout == 0) {
217 PRINTK("%s: smc911x_reset timeout waiting for reset\n", dev->name);
218 return;
219 }
220
221 /* make sure EEPROM has finished loading before setting GPIO_CFG */
222 timeout=1000;
Roel Kluin46578a692009-02-02 21:39:02 -0800223 while (--timeout && (SMC_GET_E2P_CMD(lp) & E2P_CMD_EPC_BUSY_))
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700224 udelay(10);
Roel Kluin46578a692009-02-02 21:39:02 -0800225
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700226 if (timeout == 0){
227 PRINTK("%s: smc911x_reset timeout waiting for EEPROM busy\n", dev->name);
228 return;
229 }
230
231 /* Initialize interrupts */
Magnus Damm699559f2008-06-09 16:33:54 -0700232 SMC_SET_INT_EN(lp, 0);
233 SMC_ACK_INT(lp, -1);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700234
235 /* Reset the FIFO level and flow control settings */
Magnus Damm699559f2008-06-09 16:33:54 -0700236 SMC_SET_HW_CFG(lp, (lp->tx_fifo_kb & 0xF) << 16);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700237//TODO: Figure out what appropriate pause time is
Magnus Damm699559f2008-06-09 16:33:54 -0700238 SMC_SET_FLOW(lp, FLOW_FCPT_ | FLOW_FCEN_);
239 SMC_SET_AFC_CFG(lp, lp->afc_cfg);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700240
241
242 /* Set to LED outputs */
Magnus Damm699559f2008-06-09 16:33:54 -0700243 SMC_SET_GPIO_CFG(lp, 0x70070000);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700244
Jeff Garzikd5498be2006-04-20 17:39:14 -0400245 /*
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700246 * Deassert IRQ for 1*10us for edge type interrupts
Jeff Garzikd5498be2006-04-20 17:39:14 -0400247 * and drive IRQ pin push-pull
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700248 */
Catalin Marinas319edaf2008-10-20 18:15:30 +0100249 irq_cfg = (1 << 24) | INT_CFG_IRQ_EN_ | INT_CFG_IRQ_TYPE_;
250#ifdef SMC_DYNAMIC_BUS_CONFIG
251 if (lp->cfg.irq_polarity)
252 irq_cfg |= INT_CFG_IRQ_POL_;
253#endif
254 SMC_SET_IRQ_CFG(lp, irq_cfg);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700255
256 /* clear anything saved */
257 if (lp->pending_tx_skb != NULL) {
258 dev_kfree_skb (lp->pending_tx_skb);
259 lp->pending_tx_skb = NULL;
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700260 dev->stats.tx_errors++;
261 dev->stats.tx_aborted_errors++;
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700262 }
263}
264
265/*
266 * Enable Interrupts, Receive, and Transmit
267 */
268static void smc911x_enable(struct net_device *dev)
269{
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700270 struct smc911x_local *lp = netdev_priv(dev);
271 unsigned mask, cfg, cr;
272 unsigned long flags;
273
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700274 DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __func__);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700275
Catalin Marinasb891a902008-10-20 18:15:37 +0100276 spin_lock_irqsave(&lp->lock, flags);
277
Magnus Damm699559f2008-06-09 16:33:54 -0700278 SMC_SET_MAC_ADDR(lp, dev->dev_addr);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700279
280 /* Enable TX */
Magnus Damm699559f2008-06-09 16:33:54 -0700281 cfg = SMC_GET_HW_CFG(lp);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700282 cfg &= HW_CFG_TX_FIF_SZ_ | 0xFFF;
283 cfg |= HW_CFG_SF_;
Magnus Damm699559f2008-06-09 16:33:54 -0700284 SMC_SET_HW_CFG(lp, cfg);
285 SMC_SET_FIFO_TDA(lp, 0xFF);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700286 /* Update TX stats on every 64 packets received or every 1 sec */
Magnus Damm699559f2008-06-09 16:33:54 -0700287 SMC_SET_FIFO_TSL(lp, 64);
288 SMC_SET_GPT_CFG(lp, GPT_CFG_TIMER_EN_ | 10000);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700289
Magnus Damm699559f2008-06-09 16:33:54 -0700290 SMC_GET_MAC_CR(lp, cr);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700291 cr |= MAC_CR_TXEN_ | MAC_CR_HBDIS_;
Magnus Damm699559f2008-06-09 16:33:54 -0700292 SMC_SET_MAC_CR(lp, cr);
293 SMC_SET_TX_CFG(lp, TX_CFG_TX_ON_);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700294
295 /* Add 2 byte padding to start of packets */
Magnus Damm699559f2008-06-09 16:33:54 -0700296 SMC_SET_RX_CFG(lp, (2<<8) & RX_CFG_RXDOFF_);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700297
298 /* Turn on receiver and enable RX */
299 if (cr & MAC_CR_RXEN_)
300 DBG(SMC_DEBUG_RX, "%s: Receiver already enabled\n", dev->name);
301
Magnus Damm699559f2008-06-09 16:33:54 -0700302 SMC_SET_MAC_CR(lp, cr | MAC_CR_RXEN_);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700303
304 /* Interrupt on every received packet */
Magnus Damm699559f2008-06-09 16:33:54 -0700305 SMC_SET_FIFO_RSA(lp, 0x01);
306 SMC_SET_FIFO_RSL(lp, 0x00);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700307
308 /* now, enable interrupts */
Jeff Garzikd5498be2006-04-20 17:39:14 -0400309 mask = INT_EN_TDFA_EN_ | INT_EN_TSFL_EN_ | INT_EN_RSFL_EN_ |
310 INT_EN_GPT_INT_EN_ | INT_EN_RXDFH_INT_EN_ | INT_EN_RXE_EN_ |
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700311 INT_EN_PHY_INT_EN_;
312 if (IS_REV_A(lp->revision))
313 mask|=INT_EN_RDFL_EN_;
314 else {
315 mask|=INT_EN_RDFO_EN_;
316 }
Magnus Damm699559f2008-06-09 16:33:54 -0700317 SMC_ENABLE_INT(lp, mask);
Catalin Marinasb891a902008-10-20 18:15:37 +0100318
319 spin_unlock_irqrestore(&lp->lock, flags);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700320}
321
322/*
323 * this puts the device in an inactive state
324 */
325static void smc911x_shutdown(struct net_device *dev)
326{
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700327 struct smc911x_local *lp = netdev_priv(dev);
328 unsigned cr;
329 unsigned long flags;
330
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700331 DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", CARDNAME, __func__);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700332
333 /* Disable IRQ's */
Magnus Damm699559f2008-06-09 16:33:54 -0700334 SMC_SET_INT_EN(lp, 0);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700335
336 /* Turn of Rx and TX */
337 spin_lock_irqsave(&lp->lock, flags);
Magnus Damm699559f2008-06-09 16:33:54 -0700338 SMC_GET_MAC_CR(lp, cr);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700339 cr &= ~(MAC_CR_TXEN_ | MAC_CR_RXEN_ | MAC_CR_HBDIS_);
Magnus Damm699559f2008-06-09 16:33:54 -0700340 SMC_SET_MAC_CR(lp, cr);
341 SMC_SET_TX_CFG(lp, TX_CFG_STOP_TX_);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700342 spin_unlock_irqrestore(&lp->lock, flags);
343}
344
345static inline void smc911x_drop_pkt(struct net_device *dev)
Jeff Garzikd5498be2006-04-20 17:39:14 -0400346{
Magnus Damm699559f2008-06-09 16:33:54 -0700347 struct smc911x_local *lp = netdev_priv(dev);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700348 unsigned int fifo_count, timeout, reg;
349
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700350 DBG(SMC_DEBUG_FUNC | SMC_DEBUG_RX, "%s: --> %s\n", CARDNAME, __func__);
Magnus Damm699559f2008-06-09 16:33:54 -0700351 fifo_count = SMC_GET_RX_FIFO_INF(lp) & 0xFFFF;
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700352 if (fifo_count <= 4) {
353 /* Manually dump the packet data */
354 while (fifo_count--)
Magnus Damm699559f2008-06-09 16:33:54 -0700355 SMC_GET_RX_FIFO(lp);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700356 } else {
357 /* Fast forward through the bad packet */
Magnus Damm699559f2008-06-09 16:33:54 -0700358 SMC_SET_RX_DP_CTRL(lp, RX_DP_CTRL_FFWD_BUSY_);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700359 timeout=50;
360 do {
361 udelay(10);
Magnus Damm699559f2008-06-09 16:33:54 -0700362 reg = SMC_GET_RX_DP_CTRL(lp) & RX_DP_CTRL_FFWD_BUSY_;
Roel Kluindb2961c2008-04-18 13:50:48 -0700363 } while (--timeout && reg);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700364 if (timeout == 0) {
365 PRINTK("%s: timeout waiting for RX fast forward\n", dev->name);
366 }
367 }
368}
369
370/*
371 * This is the procedure to handle the receipt of a packet.
372 * It should be called after checking for packet presence in
Jeff Garzikd5498be2006-04-20 17:39:14 -0400373 * the RX status FIFO. It must be called with the spin lock
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700374 * already held.
375 */
376static inline void smc911x_rcv(struct net_device *dev)
377{
Magnus Damm699559f2008-06-09 16:33:54 -0700378 struct smc911x_local *lp = netdev_priv(dev);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700379 unsigned int pkt_len, status;
380 struct sk_buff *skb;
381 unsigned char *data;
382
Jeff Garzikd5498be2006-04-20 17:39:14 -0400383 DBG(SMC_DEBUG_FUNC | SMC_DEBUG_RX, "%s: --> %s\n",
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700384 dev->name, __func__);
Magnus Damm699559f2008-06-09 16:33:54 -0700385 status = SMC_GET_RX_STS_FIFO(lp);
Jeff Garzikd5498be2006-04-20 17:39:14 -0400386 DBG(SMC_DEBUG_RX, "%s: Rx pkt len %d status 0x%08x \n",
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700387 dev->name, (status & 0x3fff0000) >> 16, status & 0xc000ffff);
388 pkt_len = (status & RX_STS_PKT_LEN_) >> 16;
Jeff Garzikd5498be2006-04-20 17:39:14 -0400389 if (status & RX_STS_ES_) {
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700390 /* Deal with a bad packet */
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700391 dev->stats.rx_errors++;
Jeff Garzikd5498be2006-04-20 17:39:14 -0400392 if (status & RX_STS_CRC_ERR_)
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700393 dev->stats.rx_crc_errors++;
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700394 else {
395 if (status & RX_STS_LEN_ERR_)
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700396 dev->stats.rx_length_errors++;
Jeff Garzikd5498be2006-04-20 17:39:14 -0400397 if (status & RX_STS_MCAST_)
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700398 dev->stats.multicast++;
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700399 }
400 /* Remove the bad packet data from the RX FIFO */
401 smc911x_drop_pkt(dev);
402 } else {
403 /* Receive a valid packet */
404 /* Alloc a buffer with extra room for DMA alignment */
405 skb=dev_alloc_skb(pkt_len+32);
406 if (unlikely(skb == NULL)) {
407 PRINTK( "%s: Low memory, rcvd packet dropped.\n",
408 dev->name);
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700409 dev->stats.rx_dropped++;
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700410 smc911x_drop_pkt(dev);
411 return;
412 }
Jeff Garzikd5498be2006-04-20 17:39:14 -0400413 /* Align IP header to 32 bits
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700414 * Note that the device is configured to add a 2
Jeff Garzikd5498be2006-04-20 17:39:14 -0400415 * byte padding to the packet start, so we really
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700416 * want to write to the orignal data pointer */
417 data = skb->data;
418 skb_reserve(skb, 2);
419 skb_put(skb,pkt_len-4);
420#ifdef SMC_USE_DMA
421 {
422 unsigned int fifo;
423 /* Lower the FIFO threshold if possible */
Magnus Damm699559f2008-06-09 16:33:54 -0700424 fifo = SMC_GET_FIFO_INT(lp);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700425 if (fifo & 0xFF) fifo--;
426 DBG(SMC_DEBUG_RX, "%s: Setting RX stat FIFO threshold to %d\n",
427 dev->name, fifo & 0xff);
Magnus Damm699559f2008-06-09 16:33:54 -0700428 SMC_SET_FIFO_INT(lp, fifo);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700429 /* Setup RX DMA */
Magnus Damm699559f2008-06-09 16:33:54 -0700430 SMC_SET_RX_CFG(lp, RX_CFG_RX_END_ALGN16_ | ((2<<8) & RX_CFG_RXDOFF_));
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700431 lp->rxdma_active = 1;
432 lp->current_rx_skb = skb;
Magnus Damm699559f2008-06-09 16:33:54 -0700433 SMC_PULL_DATA(lp, data, (pkt_len+2+15) & ~15);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700434 /* Packet processing deferred to DMA RX interrupt */
435 }
436#else
Magnus Damm699559f2008-06-09 16:33:54 -0700437 SMC_SET_RX_CFG(lp, RX_CFG_RX_END_ALGN4_ | ((2<<8) & RX_CFG_RXDOFF_));
438 SMC_PULL_DATA(lp, data, pkt_len+2+3);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700439
Vitaly Woolb4cf2052007-04-27 14:42:09 +0400440 DBG(SMC_DEBUG_PKTS, "%s: Received packet\n", dev->name);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700441 PRINT_PKT(data, ((pkt_len - 4) <= 64) ? pkt_len - 4 : 64);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700442 skb->protocol = eth_type_trans(skb, dev);
443 netif_rx(skb);
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700444 dev->stats.rx_packets++;
445 dev->stats.rx_bytes += pkt_len-4;
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700446#endif
447 }
448}
449
450/*
451 * This is called to actually send a packet to the chip.
452 */
453static void smc911x_hardware_send_pkt(struct net_device *dev)
454{
455 struct smc911x_local *lp = netdev_priv(dev);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700456 struct sk_buff *skb;
457 unsigned int cmdA, cmdB, len;
458 unsigned char *buf;
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700459
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700460 DBG(SMC_DEBUG_FUNC | SMC_DEBUG_TX, "%s: --> %s\n", dev->name, __func__);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700461 BUG_ON(lp->pending_tx_skb == NULL);
462
463 skb = lp->pending_tx_skb;
464 lp->pending_tx_skb = NULL;
465
Jeff Garzikd5498be2006-04-20 17:39:14 -0400466 /* cmdA {25:24] data alignment [20:16] start offset [10:0] buffer length */
467 /* cmdB {31:16] pkt tag [10:0] length */
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700468#ifdef SMC_USE_DMA
469 /* 16 byte buffer alignment mode */
470 buf = (char*)((u32)(skb->data) & ~0xF);
Jeff Garzikd5498be2006-04-20 17:39:14 -0400471 len = (skb->len + 0xF + ((u32)skb->data & 0xF)) & ~0xF;
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700472 cmdA = (1<<24) | (((u32)skb->data & 0xF)<<16) |
473 TX_CMD_A_INT_FIRST_SEG_ | TX_CMD_A_INT_LAST_SEG_ |
474 skb->len;
475#else
476 buf = (char*)((u32)skb->data & ~0x3);
Jeff Garzikd5498be2006-04-20 17:39:14 -0400477 len = (skb->len + 3 + ((u32)skb->data & 3)) & ~0x3;
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700478 cmdA = (((u32)skb->data & 0x3) << 16) |
479 TX_CMD_A_INT_FIRST_SEG_ | TX_CMD_A_INT_LAST_SEG_ |
480 skb->len;
481#endif
Jeff Garzikd5498be2006-04-20 17:39:14 -0400482 /* tag is packet length so we can use this in stats update later */
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700483 cmdB = (skb->len << 16) | (skb->len & 0x7FF);
Jeff Garzikd5498be2006-04-20 17:39:14 -0400484
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700485 DBG(SMC_DEBUG_TX, "%s: TX PKT LENGTH 0x%04x (%d) BUF 0x%p CMDA 0x%08x CMDB 0x%08x\n",
486 dev->name, len, len, buf, cmdA, cmdB);
Magnus Damm699559f2008-06-09 16:33:54 -0700487 SMC_SET_TX_FIFO(lp, cmdA);
488 SMC_SET_TX_FIFO(lp, cmdB);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700489
490 DBG(SMC_DEBUG_PKTS, "%s: Transmitted packet\n", dev->name);
491 PRINT_PKT(buf, len <= 64 ? len : 64);
492
493 /* Send pkt via PIO or DMA */
494#ifdef SMC_USE_DMA
495 lp->current_tx_skb = skb;
Magnus Damm699559f2008-06-09 16:33:54 -0700496 SMC_PUSH_DATA(lp, buf, len);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700497 /* DMA complete IRQ will free buffer and set jiffies */
498#else
Magnus Damm699559f2008-06-09 16:33:54 -0700499 SMC_PUSH_DATA(lp, buf, len);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700500 dev->trans_start = jiffies;
Will Newton70d9d152008-10-28 10:52:36 +0000501 dev_kfree_skb_irq(skb);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700502#endif
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700503 if (!lp->tx_throttle) {
504 netif_wake_queue(dev);
505 }
Magnus Damm699559f2008-06-09 16:33:54 -0700506 SMC_ENABLE_INT(lp, INT_EN_TDFA_EN_ | INT_EN_TSFL_EN_);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700507}
508
509/*
510 * Since I am not sure if I will have enough room in the chip's ram
511 * to store the packet, I call this routine which either sends it
512 * now, or set the card to generates an interrupt when ready
513 * for the packet.
514 */
515static int smc911x_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
516{
517 struct smc911x_local *lp = netdev_priv(dev);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700518 unsigned int free;
519 unsigned long flags;
520
Jeff Garzikd5498be2006-04-20 17:39:14 -0400521 DBG(SMC_DEBUG_FUNC | SMC_DEBUG_TX, "%s: --> %s\n",
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700522 dev->name, __func__);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700523
Catalin Marinasb891a902008-10-20 18:15:37 +0100524 spin_lock_irqsave(&lp->lock, flags);
525
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700526 BUG_ON(lp->pending_tx_skb != NULL);
527
Magnus Damm699559f2008-06-09 16:33:54 -0700528 free = SMC_GET_TX_FIFO_INF(lp) & TX_FIFO_INF_TDFREE_;
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700529 DBG(SMC_DEBUG_TX, "%s: TX free space %d\n", dev->name, free);
530
531 /* Turn off the flow when running out of space in FIFO */
532 if (free <= SMC911X_TX_FIFO_LOW_THRESHOLD) {
Jeff Garzikd5498be2006-04-20 17:39:14 -0400533 DBG(SMC_DEBUG_TX, "%s: Disabling data flow due to low FIFO space (%d)\n",
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700534 dev->name, free);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700535 /* Reenable when at least 1 packet of size MTU present */
Magnus Damm699559f2008-06-09 16:33:54 -0700536 SMC_SET_FIFO_TDA(lp, (SMC911X_TX_FIFO_LOW_THRESHOLD)/64);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700537 lp->tx_throttle = 1;
538 netif_stop_queue(dev);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700539 }
540
Jeff Garzikd5498be2006-04-20 17:39:14 -0400541 /* Drop packets when we run out of space in TX FIFO
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700542 * Account for overhead required for:
Jeff Garzikd5498be2006-04-20 17:39:14 -0400543 *
544 * Tx command words 8 bytes
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700545 * Start offset 15 bytes
546 * End padding 15 bytes
Jeff Garzikd5498be2006-04-20 17:39:14 -0400547 */
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700548 if (unlikely(free < (skb->len + 8 + 15 + 15))) {
Jeff Garzikd5498be2006-04-20 17:39:14 -0400549 printk("%s: No Tx free space %d < %d\n",
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700550 dev->name, free, skb->len);
551 lp->pending_tx_skb = NULL;
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700552 dev->stats.tx_errors++;
553 dev->stats.tx_dropped++;
Catalin Marinasb891a902008-10-20 18:15:37 +0100554 spin_unlock_irqrestore(&lp->lock, flags);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700555 dev_kfree_skb(skb);
556 return 0;
557 }
Jeff Garzikd5498be2006-04-20 17:39:14 -0400558
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700559#ifdef SMC_USE_DMA
560 {
561 /* If the DMA is already running then defer this packet Tx until
Jeff Garzikd5498be2006-04-20 17:39:14 -0400562 * the DMA IRQ starts it
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700563 */
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700564 if (lp->txdma_active) {
565 DBG(SMC_DEBUG_TX | SMC_DEBUG_DMA, "%s: Tx DMA running, deferring packet\n", dev->name);
566 lp->pending_tx_skb = skb;
567 netif_stop_queue(dev);
568 spin_unlock_irqrestore(&lp->lock, flags);
569 return 0;
570 } else {
571 DBG(SMC_DEBUG_TX | SMC_DEBUG_DMA, "%s: Activating Tx DMA\n", dev->name);
572 lp->txdma_active = 1;
573 }
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700574 }
575#endif
576 lp->pending_tx_skb = skb;
577 smc911x_hardware_send_pkt(dev);
Catalin Marinasb891a902008-10-20 18:15:37 +0100578 spin_unlock_irqrestore(&lp->lock, flags);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700579
580 return 0;
581}
582
583/*
584 * This handles a TX status interrupt, which is only called when:
585 * - a TX error occurred, or
586 * - TX of a packet completed.
587 */
588static void smc911x_tx(struct net_device *dev)
589{
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700590 struct smc911x_local *lp = netdev_priv(dev);
591 unsigned int tx_status;
592
Jeff Garzikd5498be2006-04-20 17:39:14 -0400593 DBG(SMC_DEBUG_FUNC | SMC_DEBUG_TX, "%s: --> %s\n",
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700594 dev->name, __func__);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700595
596 /* Collect the TX status */
Magnus Damm699559f2008-06-09 16:33:54 -0700597 while (((SMC_GET_TX_FIFO_INF(lp) & TX_FIFO_INF_TSUSED_) >> 16) != 0) {
Jeff Garzikd5498be2006-04-20 17:39:14 -0400598 DBG(SMC_DEBUG_TX, "%s: Tx stat FIFO used 0x%04x\n",
599 dev->name,
Magnus Damm699559f2008-06-09 16:33:54 -0700600 (SMC_GET_TX_FIFO_INF(lp) & TX_FIFO_INF_TSUSED_) >> 16);
601 tx_status = SMC_GET_TX_STS_FIFO(lp);
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700602 dev->stats.tx_packets++;
603 dev->stats.tx_bytes+=tx_status>>16;
Jeff Garzikd5498be2006-04-20 17:39:14 -0400604 DBG(SMC_DEBUG_TX, "%s: Tx FIFO tag 0x%04x status 0x%04x\n",
605 dev->name, (tx_status & 0xffff0000) >> 16,
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700606 tx_status & 0x0000ffff);
Jeff Garzikd5498be2006-04-20 17:39:14 -0400607 /* count Tx errors, but ignore lost carrier errors when in
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700608 * full-duplex mode */
Jeff Garzikd5498be2006-04-20 17:39:14 -0400609 if ((tx_status & TX_STS_ES_) && !(lp->ctl_rfduplx &&
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700610 !(tx_status & 0x00000306))) {
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700611 dev->stats.tx_errors++;
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700612 }
613 if (tx_status & TX_STS_MANY_COLL_) {
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700614 dev->stats.collisions+=16;
615 dev->stats.tx_aborted_errors++;
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700616 } else {
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700617 dev->stats.collisions+=(tx_status & TX_STS_COLL_CNT_) >> 3;
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700618 }
619 /* carrier error only has meaning for half-duplex communication */
Jeff Garzikd5498be2006-04-20 17:39:14 -0400620 if ((tx_status & (TX_STS_LOC_ | TX_STS_NO_CARR_)) &&
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700621 !lp->ctl_rfduplx) {
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700622 dev->stats.tx_carrier_errors++;
Jeff Garzikd5498be2006-04-20 17:39:14 -0400623 }
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700624 if (tx_status & TX_STS_LATE_COLL_) {
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700625 dev->stats.collisions++;
626 dev->stats.tx_aborted_errors++;
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700627 }
628 }
629}
630
631
632/*---PHY CONTROL AND CONFIGURATION-----------------------------------------*/
633/*
634 * Reads a register from the MII Management serial interface
635 */
636
637static int smc911x_phy_read(struct net_device *dev, int phyaddr, int phyreg)
638{
Magnus Damm699559f2008-06-09 16:33:54 -0700639 struct smc911x_local *lp = netdev_priv(dev);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700640 unsigned int phydata;
641
Magnus Damm699559f2008-06-09 16:33:54 -0700642 SMC_GET_MII(lp, phyreg, phyaddr, phydata);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700643
644 DBG(SMC_DEBUG_MISC, "%s: phyaddr=0x%x, phyreg=0x%02x, phydata=0x%04x\n",
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700645 __func__, phyaddr, phyreg, phydata);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700646 return phydata;
647}
648
649
650/*
651 * Writes a register to the MII Management serial interface
652 */
653static void smc911x_phy_write(struct net_device *dev, int phyaddr, int phyreg,
654 int phydata)
655{
Magnus Damm699559f2008-06-09 16:33:54 -0700656 struct smc911x_local *lp = netdev_priv(dev);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700657
658 DBG(SMC_DEBUG_MISC, "%s: phyaddr=0x%x, phyreg=0x%x, phydata=0x%x\n",
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700659 __func__, phyaddr, phyreg, phydata);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700660
Magnus Damm699559f2008-06-09 16:33:54 -0700661 SMC_SET_MII(lp, phyreg, phyaddr, phydata);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700662}
663
664/*
665 * Finds and reports the PHY address (115 and 117 have external
666 * PHY interface 118 has internal only
667 */
668static void smc911x_phy_detect(struct net_device *dev)
669{
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700670 struct smc911x_local *lp = netdev_priv(dev);
671 int phyaddr;
672 unsigned int cfg, id1, id2;
673
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700674 DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __func__);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700675
676 lp->phy_type = 0;
677
678 /*
679 * Scan all 32 PHY addresses if necessary, starting at
680 * PHY#1 to PHY#31, and then PHY#0 last.
681 */
682 switch(lp->version) {
Guennadi Liakhovetskic6dcb822008-10-12 21:05:14 -0700683 case CHIP_9115:
684 case CHIP_9117:
685 case CHIP_9215:
686 case CHIP_9217:
Magnus Damm699559f2008-06-09 16:33:54 -0700687 cfg = SMC_GET_HW_CFG(lp);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700688 if (cfg & HW_CFG_EXT_PHY_DET_) {
689 cfg &= ~HW_CFG_PHY_CLK_SEL_;
690 cfg |= HW_CFG_PHY_CLK_SEL_CLK_DIS_;
Magnus Damm699559f2008-06-09 16:33:54 -0700691 SMC_SET_HW_CFG(lp, cfg);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700692 udelay(10); /* Wait for clocks to stop */
693
694 cfg |= HW_CFG_EXT_PHY_EN_;
Magnus Damm699559f2008-06-09 16:33:54 -0700695 SMC_SET_HW_CFG(lp, cfg);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700696 udelay(10); /* Wait for clocks to stop */
697
698 cfg &= ~HW_CFG_PHY_CLK_SEL_;
699 cfg |= HW_CFG_PHY_CLK_SEL_EXT_PHY_;
Magnus Damm699559f2008-06-09 16:33:54 -0700700 SMC_SET_HW_CFG(lp, cfg);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700701 udelay(10); /* Wait for clocks to stop */
702
703 cfg |= HW_CFG_SMI_SEL_;
Magnus Damm699559f2008-06-09 16:33:54 -0700704 SMC_SET_HW_CFG(lp, cfg);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700705
706 for (phyaddr = 1; phyaddr < 32; ++phyaddr) {
707
708 /* Read the PHY identifiers */
Magnus Damm699559f2008-06-09 16:33:54 -0700709 SMC_GET_PHY_ID1(lp, phyaddr & 31, id1);
710 SMC_GET_PHY_ID2(lp, phyaddr & 31, id2);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700711
712 /* Make sure it is a valid identifier */
Jeff Garzikd5498be2006-04-20 17:39:14 -0400713 if (id1 != 0x0000 && id1 != 0xffff &&
714 id1 != 0x8000 && id2 != 0x0000 &&
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700715 id2 != 0xffff && id2 != 0x8000) {
716 /* Save the PHY's address */
717 lp->mii.phy_id = phyaddr & 31;
718 lp->phy_type = id1 << 16 | id2;
719 break;
720 }
721 }
Guennadi Liakhovetskif3073ac2008-10-11 15:07:16 -0700722 if (phyaddr < 32)
723 /* Found an external PHY */
724 break;
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700725 }
726 default:
727 /* Internal media only */
Magnus Damm699559f2008-06-09 16:33:54 -0700728 SMC_GET_PHY_ID1(lp, 1, id1);
729 SMC_GET_PHY_ID2(lp, 1, id2);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700730 /* Save the PHY's address */
731 lp->mii.phy_id = 1;
732 lp->phy_type = id1 << 16 | id2;
733 }
734
735 DBG(SMC_DEBUG_MISC, "%s: phy_id1=0x%x, phy_id2=0x%x phyaddr=0x%d\n",
736 dev->name, id1, id2, lp->mii.phy_id);
737}
738
739/*
740 * Sets the PHY to a configuration as determined by the user.
741 * Called with spin_lock held.
742 */
743static int smc911x_phy_fixed(struct net_device *dev)
744{
745 struct smc911x_local *lp = netdev_priv(dev);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700746 int phyaddr = lp->mii.phy_id;
747 int bmcr;
748
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700749 DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __func__);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700750
751 /* Enter Link Disable state */
Magnus Damm699559f2008-06-09 16:33:54 -0700752 SMC_GET_PHY_BMCR(lp, phyaddr, bmcr);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700753 bmcr |= BMCR_PDOWN;
Magnus Damm699559f2008-06-09 16:33:54 -0700754 SMC_SET_PHY_BMCR(lp, phyaddr, bmcr);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700755
756 /*
757 * Set our fixed capabilities
758 * Disable auto-negotiation
759 */
760 bmcr &= ~BMCR_ANENABLE;
761 if (lp->ctl_rfduplx)
762 bmcr |= BMCR_FULLDPLX;
763
764 if (lp->ctl_rspeed == 100)
765 bmcr |= BMCR_SPEED100;
766
767 /* Write our capabilities to the phy control register */
Magnus Damm699559f2008-06-09 16:33:54 -0700768 SMC_SET_PHY_BMCR(lp, phyaddr, bmcr);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700769
770 /* Re-Configure the Receive/Phy Control register */
771 bmcr &= ~BMCR_PDOWN;
Magnus Damm699559f2008-06-09 16:33:54 -0700772 SMC_SET_PHY_BMCR(lp, phyaddr, bmcr);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700773
774 return 1;
775}
776
777/*
778 * smc911x_phy_reset - reset the phy
779 * @dev: net device
780 * @phy: phy address
781 *
782 * Issue a software reset for the specified PHY and
783 * wait up to 100ms for the reset to complete. We should
784 * not access the PHY for 50ms after issuing the reset.
785 *
786 * The time to wait appears to be dependent on the PHY.
787 *
788 */
789static int smc911x_phy_reset(struct net_device *dev, int phy)
790{
791 struct smc911x_local *lp = netdev_priv(dev);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700792 int timeout;
793 unsigned long flags;
794 unsigned int reg;
795
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700796 DBG(SMC_DEBUG_FUNC, "%s: --> %s()\n", dev->name, __func__);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700797
798 spin_lock_irqsave(&lp->lock, flags);
Magnus Damm699559f2008-06-09 16:33:54 -0700799 reg = SMC_GET_PMT_CTRL(lp);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700800 reg &= ~0xfffff030;
801 reg |= PMT_CTRL_PHY_RST_;
Magnus Damm699559f2008-06-09 16:33:54 -0700802 SMC_SET_PMT_CTRL(lp, reg);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700803 spin_unlock_irqrestore(&lp->lock, flags);
804 for (timeout = 2; timeout; timeout--) {
805 msleep(50);
806 spin_lock_irqsave(&lp->lock, flags);
Magnus Damm699559f2008-06-09 16:33:54 -0700807 reg = SMC_GET_PMT_CTRL(lp);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700808 spin_unlock_irqrestore(&lp->lock, flags);
809 if (!(reg & PMT_CTRL_PHY_RST_)) {
Jeff Garzikd5498be2006-04-20 17:39:14 -0400810 /* extra delay required because the phy may
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700811 * not be completed with its reset
Jeff Garzikd5498be2006-04-20 17:39:14 -0400812 * when PHY_BCR_RESET_ is cleared. 256us
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700813 * should suffice, but use 500us to be safe
814 */
815 udelay(500);
816 break;
817 }
818 }
819
820 return reg & PMT_CTRL_PHY_RST_;
821}
822
823/*
824 * smc911x_phy_powerdown - powerdown phy
825 * @dev: net device
826 * @phy: phy address
827 *
828 * Power down the specified PHY
829 */
830static void smc911x_phy_powerdown(struct net_device *dev, int phy)
831{
Magnus Damm699559f2008-06-09 16:33:54 -0700832 struct smc911x_local *lp = netdev_priv(dev);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700833 unsigned int bmcr;
834
835 /* Enter Link Disable state */
Magnus Damm699559f2008-06-09 16:33:54 -0700836 SMC_GET_PHY_BMCR(lp, phy, bmcr);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700837 bmcr |= BMCR_PDOWN;
Magnus Damm699559f2008-06-09 16:33:54 -0700838 SMC_SET_PHY_BMCR(lp, phy, bmcr);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700839}
840
841/*
842 * smc911x_phy_check_media - check the media status and adjust BMCR
843 * @dev: net device
844 * @init: set true for initialisation
845 *
846 * Select duplex mode depending on negotiation state. This
847 * also updates our carrier state.
848 */
849static void smc911x_phy_check_media(struct net_device *dev, int init)
850{
851 struct smc911x_local *lp = netdev_priv(dev);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700852 int phyaddr = lp->mii.phy_id;
853 unsigned int bmcr, cr;
854
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700855 DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __func__);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700856
857 if (mii_check_media(&lp->mii, netif_msg_link(lp), init)) {
858 /* duplex state has changed */
Magnus Damm699559f2008-06-09 16:33:54 -0700859 SMC_GET_PHY_BMCR(lp, phyaddr, bmcr);
860 SMC_GET_MAC_CR(lp, cr);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700861 if (lp->mii.full_duplex) {
862 DBG(SMC_DEBUG_MISC, "%s: Configuring for full-duplex mode\n", dev->name);
863 bmcr |= BMCR_FULLDPLX;
864 cr |= MAC_CR_RCVOWN_;
865 } else {
866 DBG(SMC_DEBUG_MISC, "%s: Configuring for half-duplex mode\n", dev->name);
867 bmcr &= ~BMCR_FULLDPLX;
868 cr &= ~MAC_CR_RCVOWN_;
869 }
Magnus Damm699559f2008-06-09 16:33:54 -0700870 SMC_SET_PHY_BMCR(lp, phyaddr, bmcr);
871 SMC_SET_MAC_CR(lp, cr);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700872 }
873}
874
875/*
876 * Configures the specified PHY through the MII management interface
877 * using Autonegotiation.
878 * Calls smc911x_phy_fixed() if the user has requested a certain config.
879 * If RPC ANEG bit is set, the media selection is dependent purely on
880 * the selection by the MII (either in the MII BMCR reg or the result
881 * of autonegotiation.) If the RPC ANEG bit is cleared, the selection
882 * is controlled by the RPC SPEED and RPC DPLX bits.
883 */
Andrew Mortonef8142a2006-12-22 01:08:33 -0800884static void smc911x_phy_configure(struct work_struct *work)
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700885{
Andrew Mortonef8142a2006-12-22 01:08:33 -0800886 struct smc911x_local *lp = container_of(work, struct smc911x_local,
887 phy_configure);
888 struct net_device *dev = lp->netdev;
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700889 int phyaddr = lp->mii.phy_id;
890 int my_phy_caps; /* My PHY capabilities */
891 int my_ad_caps; /* My Advertised capabilities */
892 int status;
893 unsigned long flags;
894
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700895 DBG(SMC_DEBUG_FUNC, "%s: --> %s()\n", dev->name, __func__);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700896
897 /*
898 * We should not be called if phy_type is zero.
899 */
900 if (lp->phy_type == 0)
David S. Miller4bb073c2008-06-12 02:22:02 -0700901 return;
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700902
903 if (smc911x_phy_reset(dev, phyaddr)) {
904 printk("%s: PHY reset timed out\n", dev->name);
David S. Miller4bb073c2008-06-12 02:22:02 -0700905 return;
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700906 }
907 spin_lock_irqsave(&lp->lock, flags);
908
909 /*
910 * Enable PHY Interrupts (for register 18)
911 * Interrupts listed here are enabled
912 */
Magnus Damm699559f2008-06-09 16:33:54 -0700913 SMC_SET_PHY_INT_MASK(lp, phyaddr, PHY_INT_MASK_ENERGY_ON_ |
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700914 PHY_INT_MASK_ANEG_COMP_ | PHY_INT_MASK_REMOTE_FAULT_ |
915 PHY_INT_MASK_LINK_DOWN_);
916
917 /* If the user requested no auto neg, then go set his request */
918 if (lp->mii.force_media) {
919 smc911x_phy_fixed(dev);
920 goto smc911x_phy_configure_exit;
921 }
922
923 /* Copy our capabilities from MII_BMSR to MII_ADVERTISE */
Magnus Damm699559f2008-06-09 16:33:54 -0700924 SMC_GET_PHY_BMSR(lp, phyaddr, my_phy_caps);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700925 if (!(my_phy_caps & BMSR_ANEGCAPABLE)) {
926 printk(KERN_INFO "Auto negotiation NOT supported\n");
927 smc911x_phy_fixed(dev);
928 goto smc911x_phy_configure_exit;
929 }
930
931 /* CSMA capable w/ both pauses */
932 my_ad_caps = ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
933
934 if (my_phy_caps & BMSR_100BASE4)
935 my_ad_caps |= ADVERTISE_100BASE4;
936 if (my_phy_caps & BMSR_100FULL)
937 my_ad_caps |= ADVERTISE_100FULL;
938 if (my_phy_caps & BMSR_100HALF)
939 my_ad_caps |= ADVERTISE_100HALF;
940 if (my_phy_caps & BMSR_10FULL)
941 my_ad_caps |= ADVERTISE_10FULL;
942 if (my_phy_caps & BMSR_10HALF)
943 my_ad_caps |= ADVERTISE_10HALF;
944
945 /* Disable capabilities not selected by our user */
946 if (lp->ctl_rspeed != 100)
947 my_ad_caps &= ~(ADVERTISE_100BASE4|ADVERTISE_100FULL|ADVERTISE_100HALF);
948
949 if (!lp->ctl_rfduplx)
950 my_ad_caps &= ~(ADVERTISE_100FULL|ADVERTISE_10FULL);
951
952 /* Update our Auto-Neg Advertisement Register */
Magnus Damm699559f2008-06-09 16:33:54 -0700953 SMC_SET_PHY_MII_ADV(lp, phyaddr, my_ad_caps);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700954 lp->mii.advertising = my_ad_caps;
955
956 /*
957 * Read the register back. Without this, it appears that when
958 * auto-negotiation is restarted, sometimes it isn't ready and
959 * the link does not come up.
960 */
961 udelay(10);
Magnus Damm699559f2008-06-09 16:33:54 -0700962 SMC_GET_PHY_MII_ADV(lp, phyaddr, status);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700963
964 DBG(SMC_DEBUG_MISC, "%s: phy caps=0x%04x\n", dev->name, my_phy_caps);
965 DBG(SMC_DEBUG_MISC, "%s: phy advertised caps=0x%04x\n", dev->name, my_ad_caps);
966
967 /* Restart auto-negotiation process in order to advertise my caps */
Magnus Damm699559f2008-06-09 16:33:54 -0700968 SMC_SET_PHY_BMCR(lp, phyaddr, BMCR_ANENABLE | BMCR_ANRESTART);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700969
970 smc911x_phy_check_media(dev, 1);
971
972smc911x_phy_configure_exit:
973 spin_unlock_irqrestore(&lp->lock, flags);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700974}
975
976/*
977 * smc911x_phy_interrupt
978 *
979 * Purpose: Handle interrupts relating to PHY register 18. This is
980 * called from the "hard" interrupt handler under our private spinlock.
981 */
982static void smc911x_phy_interrupt(struct net_device *dev)
983{
984 struct smc911x_local *lp = netdev_priv(dev);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700985 int phyaddr = lp->mii.phy_id;
986 int status;
987
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700988 DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __func__);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700989
990 if (lp->phy_type == 0)
991 return;
992
993 smc911x_phy_check_media(dev, 0);
994 /* read to clear status bits */
Magnus Damm699559f2008-06-09 16:33:54 -0700995 SMC_GET_PHY_INT_SRC(lp, phyaddr,status);
Jeff Garzikd5498be2006-04-20 17:39:14 -0400996 DBG(SMC_DEBUG_MISC, "%s: PHY interrupt status 0x%04x\n",
Dustin McIntire0a0c72c2006-04-19 20:24:51 -0700997 dev->name, status & 0xffff);
Jeff Garzikd5498be2006-04-20 17:39:14 -0400998 DBG(SMC_DEBUG_MISC, "%s: AFC_CFG 0x%08x\n",
Magnus Damm699559f2008-06-09 16:33:54 -0700999 dev->name, SMC_GET_AFC_CFG(lp));
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001000}
1001
1002/*--- END PHY CONTROL AND CONFIGURATION-------------------------------------*/
1003
1004/*
1005 * This is the main routine of the driver, to handle the device when
1006 * it needs some attention.
1007 */
David Howells7d12e782006-10-05 14:55:46 +01001008static irqreturn_t smc911x_interrupt(int irq, void *dev_id)
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001009{
1010 struct net_device *dev = dev_id;
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001011 struct smc911x_local *lp = netdev_priv(dev);
1012 unsigned int status, mask, timeout;
1013 unsigned int rx_overrun=0, cr, pkts;
1014 unsigned long flags;
1015
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07001016 DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __func__);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001017
1018 spin_lock_irqsave(&lp->lock, flags);
1019
1020 /* Spurious interrupt check */
Magnus Damm699559f2008-06-09 16:33:54 -07001021 if ((SMC_GET_IRQ_CFG(lp) & (INT_CFG_IRQ_INT_ | INT_CFG_IRQ_EN_)) !=
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001022 (INT_CFG_IRQ_INT_ | INT_CFG_IRQ_EN_)) {
Peter Korsgaarda4d09272006-08-14 23:00:17 -07001023 spin_unlock_irqrestore(&lp->lock, flags);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001024 return IRQ_NONE;
1025 }
1026
Magnus Damm699559f2008-06-09 16:33:54 -07001027 mask = SMC_GET_INT_EN(lp);
1028 SMC_SET_INT_EN(lp, 0);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001029
1030 /* set a timeout value, so I don't stay here forever */
1031 timeout = 8;
1032
1033
1034 do {
Magnus Damm699559f2008-06-09 16:33:54 -07001035 status = SMC_GET_INT(lp);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001036
1037 DBG(SMC_DEBUG_MISC, "%s: INT 0x%08x MASK 0x%08x OUTSIDE MASK 0x%08x\n",
1038 dev->name, status, mask, status & ~mask);
1039
1040 status &= mask;
1041 if (!status)
1042 break;
1043
1044 /* Handle SW interrupt condition */
1045 if (status & INT_STS_SW_INT_) {
Magnus Damm699559f2008-06-09 16:33:54 -07001046 SMC_ACK_INT(lp, INT_STS_SW_INT_);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001047 mask &= ~INT_EN_SW_INT_EN_;
1048 }
1049 /* Handle various error conditions */
1050 if (status & INT_STS_RXE_) {
Magnus Damm699559f2008-06-09 16:33:54 -07001051 SMC_ACK_INT(lp, INT_STS_RXE_);
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001052 dev->stats.rx_errors++;
Jeff Garzikd5498be2006-04-20 17:39:14 -04001053 }
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001054 if (status & INT_STS_RXDFH_INT_) {
Magnus Damm699559f2008-06-09 16:33:54 -07001055 SMC_ACK_INT(lp, INT_STS_RXDFH_INT_);
1056 dev->stats.rx_dropped+=SMC_GET_RX_DROP(lp);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001057 }
1058 /* Undocumented interrupt-what is the right thing to do here? */
1059 if (status & INT_STS_RXDF_INT_) {
Magnus Damm699559f2008-06-09 16:33:54 -07001060 SMC_ACK_INT(lp, INT_STS_RXDF_INT_);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001061 }
1062
1063 /* Rx Data FIFO exceeds set level */
1064 if (status & INT_STS_RDFL_) {
1065 if (IS_REV_A(lp->revision)) {
1066 rx_overrun=1;
Magnus Damm699559f2008-06-09 16:33:54 -07001067 SMC_GET_MAC_CR(lp, cr);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001068 cr &= ~MAC_CR_RXEN_;
Magnus Damm699559f2008-06-09 16:33:54 -07001069 SMC_SET_MAC_CR(lp, cr);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001070 DBG(SMC_DEBUG_RX, "%s: RX overrun\n", dev->name);
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001071 dev->stats.rx_errors++;
1072 dev->stats.rx_fifo_errors++;
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001073 }
Magnus Damm699559f2008-06-09 16:33:54 -07001074 SMC_ACK_INT(lp, INT_STS_RDFL_);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001075 }
1076 if (status & INT_STS_RDFO_) {
1077 if (!IS_REV_A(lp->revision)) {
Magnus Damm699559f2008-06-09 16:33:54 -07001078 SMC_GET_MAC_CR(lp, cr);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001079 cr &= ~MAC_CR_RXEN_;
Magnus Damm699559f2008-06-09 16:33:54 -07001080 SMC_SET_MAC_CR(lp, cr);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001081 rx_overrun=1;
1082 DBG(SMC_DEBUG_RX, "%s: RX overrun\n", dev->name);
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001083 dev->stats.rx_errors++;
1084 dev->stats.rx_fifo_errors++;
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001085 }
Magnus Damm699559f2008-06-09 16:33:54 -07001086 SMC_ACK_INT(lp, INT_STS_RDFO_);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001087 }
1088 /* Handle receive condition */
1089 if ((status & INT_STS_RSFL_) || rx_overrun) {
1090 unsigned int fifo;
1091 DBG(SMC_DEBUG_RX, "%s: RX irq\n", dev->name);
Magnus Damm699559f2008-06-09 16:33:54 -07001092 fifo = SMC_GET_RX_FIFO_INF(lp);
Jeff Garzikd5498be2006-04-20 17:39:14 -04001093 pkts = (fifo & RX_FIFO_INF_RXSUSED_) >> 16;
1094 DBG(SMC_DEBUG_RX, "%s: Rx FIFO pkts %d, bytes %d\n",
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001095 dev->name, pkts, fifo & 0xFFFF );
1096 if (pkts != 0) {
1097#ifdef SMC_USE_DMA
1098 unsigned int fifo;
1099 if (lp->rxdma_active){
Jeff Garzikd5498be2006-04-20 17:39:14 -04001100 DBG(SMC_DEBUG_RX | SMC_DEBUG_DMA,
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001101 "%s: RX DMA active\n", dev->name);
1102 /* The DMA is already running so up the IRQ threshold */
Magnus Damm699559f2008-06-09 16:33:54 -07001103 fifo = SMC_GET_FIFO_INT(lp) & ~0xFF;
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001104 fifo |= pkts & 0xFF;
Jeff Garzikd5498be2006-04-20 17:39:14 -04001105 DBG(SMC_DEBUG_RX,
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001106 "%s: Setting RX stat FIFO threshold to %d\n",
1107 dev->name, fifo & 0xff);
Magnus Damm699559f2008-06-09 16:33:54 -07001108 SMC_SET_FIFO_INT(lp, fifo);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001109 } else
1110#endif
1111 smc911x_rcv(dev);
1112 }
Magnus Damm699559f2008-06-09 16:33:54 -07001113 SMC_ACK_INT(lp, INT_STS_RSFL_);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001114 }
1115 /* Handle transmit FIFO available */
1116 if (status & INT_STS_TDFA_) {
1117 DBG(SMC_DEBUG_TX, "%s: TX data FIFO space available irq\n", dev->name);
Magnus Damm699559f2008-06-09 16:33:54 -07001118 SMC_SET_FIFO_TDA(lp, 0xFF);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001119 lp->tx_throttle = 0;
1120#ifdef SMC_USE_DMA
1121 if (!lp->txdma_active)
1122#endif
1123 netif_wake_queue(dev);
Magnus Damm699559f2008-06-09 16:33:54 -07001124 SMC_ACK_INT(lp, INT_STS_TDFA_);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001125 }
1126 /* Handle transmit done condition */
1127#if 1
1128 if (status & (INT_STS_TSFL_ | INT_STS_GPT_INT_)) {
Jeff Garzikd5498be2006-04-20 17:39:14 -04001129 DBG(SMC_DEBUG_TX | SMC_DEBUG_MISC,
1130 "%s: Tx stat FIFO limit (%d) /GPT irq\n",
Magnus Damm699559f2008-06-09 16:33:54 -07001131 dev->name, (SMC_GET_FIFO_INT(lp) & 0x00ff0000) >> 16);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001132 smc911x_tx(dev);
Magnus Damm699559f2008-06-09 16:33:54 -07001133 SMC_SET_GPT_CFG(lp, GPT_CFG_TIMER_EN_ | 10000);
1134 SMC_ACK_INT(lp, INT_STS_TSFL_);
1135 SMC_ACK_INT(lp, INT_STS_TSFL_ | INT_STS_GPT_INT_);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001136 }
1137#else
1138 if (status & INT_STS_TSFL_) {
1139 DBG(SMC_DEBUG_TX, "%s: TX status FIFO limit (%d) irq \n", dev->name, );
1140 smc911x_tx(dev);
Magnus Damm699559f2008-06-09 16:33:54 -07001141 SMC_ACK_INT(lp, INT_STS_TSFL_);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001142 }
1143
1144 if (status & INT_STS_GPT_INT_) {
Jeff Garzikd5498be2006-04-20 17:39:14 -04001145 DBG(SMC_DEBUG_RX, "%s: IRQ_CFG 0x%08x FIFO_INT 0x%08x RX_CFG 0x%08x\n",
1146 dev->name,
Magnus Damm699559f2008-06-09 16:33:54 -07001147 SMC_GET_IRQ_CFG(lp),
1148 SMC_GET_FIFO_INT(lp),
1149 SMC_GET_RX_CFG(lp));
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001150 DBG(SMC_DEBUG_RX, "%s: Rx Stat FIFO Used 0x%02x "
1151 "Data FIFO Used 0x%04x Stat FIFO 0x%08x\n",
Jeff Garzikd5498be2006-04-20 17:39:14 -04001152 dev->name,
Magnus Damm699559f2008-06-09 16:33:54 -07001153 (SMC_GET_RX_FIFO_INF(lp) & 0x00ff0000) >> 16,
1154 SMC_GET_RX_FIFO_INF(lp) & 0xffff,
1155 SMC_GET_RX_STS_FIFO_PEEK(lp));
1156 SMC_SET_GPT_CFG(lp, GPT_CFG_TIMER_EN_ | 10000);
1157 SMC_ACK_INT(lp, INT_STS_GPT_INT_);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001158 }
1159#endif
1160
Robert P. J. Day3a4fa0a2007-10-19 23:10:43 +02001161 /* Handle PHY interrupt condition */
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001162 if (status & INT_STS_PHY_INT_) {
1163 DBG(SMC_DEBUG_MISC, "%s: PHY irq\n", dev->name);
1164 smc911x_phy_interrupt(dev);
Magnus Damm699559f2008-06-09 16:33:54 -07001165 SMC_ACK_INT(lp, INT_STS_PHY_INT_);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001166 }
1167 } while (--timeout);
1168
1169 /* restore mask state */
Magnus Damm699559f2008-06-09 16:33:54 -07001170 SMC_SET_INT_EN(lp, mask);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001171
Jeff Garzikd5498be2006-04-20 17:39:14 -04001172 DBG(SMC_DEBUG_MISC, "%s: Interrupt done (%d loops)\n",
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001173 dev->name, 8-timeout);
1174
1175 spin_unlock_irqrestore(&lp->lock, flags);
1176
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001177 return IRQ_HANDLED;
1178}
1179
1180#ifdef SMC_USE_DMA
1181static void
David Howells7d12e782006-10-05 14:55:46 +01001182smc911x_tx_dma_irq(int dma, void *data)
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001183{
1184 struct net_device *dev = (struct net_device *)data;
1185 struct smc911x_local *lp = netdev_priv(dev);
1186 struct sk_buff *skb = lp->current_tx_skb;
1187 unsigned long flags;
1188
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07001189 DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __func__);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001190
1191 DBG(SMC_DEBUG_TX | SMC_DEBUG_DMA, "%s: TX DMA irq handler\n", dev->name);
1192 /* Clear the DMA interrupt sources */
1193 SMC_DMA_ACK_IRQ(dev, dma);
1194 BUG_ON(skb == NULL);
1195 dma_unmap_single(NULL, tx_dmabuf, tx_dmalen, DMA_TO_DEVICE);
1196 dev->trans_start = jiffies;
1197 dev_kfree_skb_irq(skb);
1198 lp->current_tx_skb = NULL;
1199 if (lp->pending_tx_skb != NULL)
1200 smc911x_hardware_send_pkt(dev);
1201 else {
Jeff Garzikd5498be2006-04-20 17:39:14 -04001202 DBG(SMC_DEBUG_TX | SMC_DEBUG_DMA,
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001203 "%s: No pending Tx packets. DMA disabled\n", dev->name);
1204 spin_lock_irqsave(&lp->lock, flags);
1205 lp->txdma_active = 0;
1206 if (!lp->tx_throttle) {
1207 netif_wake_queue(dev);
1208 }
1209 spin_unlock_irqrestore(&lp->lock, flags);
1210 }
1211
Jeff Garzikd5498be2006-04-20 17:39:14 -04001212 DBG(SMC_DEBUG_TX | SMC_DEBUG_DMA,
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001213 "%s: TX DMA irq completed\n", dev->name);
1214}
1215static void
David Howells7d12e782006-10-05 14:55:46 +01001216smc911x_rx_dma_irq(int dma, void *data)
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001217{
1218 struct net_device *dev = (struct net_device *)data;
1219 unsigned long ioaddr = dev->base_addr;
1220 struct smc911x_local *lp = netdev_priv(dev);
1221 struct sk_buff *skb = lp->current_rx_skb;
1222 unsigned long flags;
1223 unsigned int pkts;
1224
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07001225 DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __func__);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001226 DBG(SMC_DEBUG_RX | SMC_DEBUG_DMA, "%s: RX DMA irq handler\n", dev->name);
1227 /* Clear the DMA interrupt sources */
1228 SMC_DMA_ACK_IRQ(dev, dma);
1229 dma_unmap_single(NULL, rx_dmabuf, rx_dmalen, DMA_FROM_DEVICE);
1230 BUG_ON(skb == NULL);
1231 lp->current_rx_skb = NULL;
1232 PRINT_PKT(skb->data, skb->len);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001233 skb->protocol = eth_type_trans(skb, dev);
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001234 dev->stats.rx_packets++;
1235 dev->stats.rx_bytes += skb->len;
Wang Chend30f53a2007-12-04 10:01:37 +08001236 netif_rx(skb);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001237
1238 spin_lock_irqsave(&lp->lock, flags);
Dmitry Baryshkovd766a4e2008-10-21 04:36:29 +04001239 pkts = (SMC_GET_RX_FIFO_INF(lp) & RX_FIFO_INF_RXSUSED_) >> 16;
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001240 if (pkts != 0) {
1241 smc911x_rcv(dev);
1242 }else {
1243 lp->rxdma_active = 0;
1244 }
1245 spin_unlock_irqrestore(&lp->lock, flags);
Jeff Garzikd5498be2006-04-20 17:39:14 -04001246 DBG(SMC_DEBUG_RX | SMC_DEBUG_DMA,
1247 "%s: RX DMA irq completed. DMA RX FIFO PKTS %d\n",
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001248 dev->name, pkts);
1249}
1250#endif /* SMC_USE_DMA */
1251
1252#ifdef CONFIG_NET_POLL_CONTROLLER
1253/*
1254 * Polling receive - used by netconsole and other diagnostic tools
1255 * to allow network i/o with interrupts disabled.
1256 */
1257static void smc911x_poll_controller(struct net_device *dev)
1258{
1259 disable_irq(dev->irq);
Vitaly Wool9b6d2ef2006-12-22 01:08:24 -08001260 smc911x_interrupt(dev->irq, dev);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001261 enable_irq(dev->irq);
1262}
1263#endif
1264
1265/* Our watchdog timed out. Called by the networking layer */
1266static void smc911x_timeout(struct net_device *dev)
1267{
1268 struct smc911x_local *lp = netdev_priv(dev);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001269 int status, mask;
1270 unsigned long flags;
1271
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07001272 DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __func__);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001273
1274 spin_lock_irqsave(&lp->lock, flags);
Magnus Damm699559f2008-06-09 16:33:54 -07001275 status = SMC_GET_INT(lp);
1276 mask = SMC_GET_INT_EN(lp);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001277 spin_unlock_irqrestore(&lp->lock, flags);
1278 DBG(SMC_DEBUG_MISC, "%s: INT 0x%02x MASK 0x%02x \n",
1279 dev->name, status, mask);
1280
1281 /* Dump the current TX FIFO contents and restart */
Magnus Damm699559f2008-06-09 16:33:54 -07001282 mask = SMC_GET_TX_CFG(lp);
1283 SMC_SET_TX_CFG(lp, mask | TX_CFG_TXS_DUMP_ | TX_CFG_TXD_DUMP_);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001284 /*
1285 * Reconfiguring the PHY doesn't seem like a bad idea here, but
1286 * smc911x_phy_configure() calls msleep() which calls schedule_timeout()
1287 * which calls schedule(). Hence we use a work queue.
1288 */
David S. Miller4bb073c2008-06-12 02:22:02 -07001289 if (lp->phy_type != 0)
1290 schedule_work(&lp->phy_configure);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001291
1292 /* We can accept TX packets again */
1293 dev->trans_start = jiffies;
1294 netif_wake_queue(dev);
1295}
1296
1297/*
1298 * This routine will, depending on the values passed to it,
1299 * either make it accept multicast packets, go into
1300 * promiscuous mode (for TCPDUMP and cousins) or accept
1301 * a select set of multicast packets
1302 */
1303static void smc911x_set_multicast_list(struct net_device *dev)
1304{
1305 struct smc911x_local *lp = netdev_priv(dev);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001306 unsigned int multicast_table[2];
1307 unsigned int mcr, update_multicast = 0;
1308 unsigned long flags;
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001309
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07001310 DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __func__);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001311
1312 spin_lock_irqsave(&lp->lock, flags);
Magnus Damm699559f2008-06-09 16:33:54 -07001313 SMC_GET_MAC_CR(lp, mcr);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001314 spin_unlock_irqrestore(&lp->lock, flags);
1315
1316 if (dev->flags & IFF_PROMISC) {
1317
1318 DBG(SMC_DEBUG_MISC, "%s: RCR_PRMS\n", dev->name);
1319 mcr |= MAC_CR_PRMS_;
1320 }
1321 /*
1322 * Here, I am setting this to accept all multicast packets.
1323 * I don't need to zero the multicast table, because the flag is
1324 * checked before the table is
1325 */
1326 else if (dev->flags & IFF_ALLMULTI || dev->mc_count > 16) {
1327 DBG(SMC_DEBUG_MISC, "%s: RCR_ALMUL\n", dev->name);
1328 mcr |= MAC_CR_MCPAS_;
1329 }
1330
1331 /*
1332 * This sets the internal hardware table to filter out unwanted
1333 * multicast packets before they take up memory.
1334 *
1335 * The SMC chip uses a hash table where the high 6 bits of the CRC of
1336 * address are the offset into the table. If that bit is 1, then the
1337 * multicast packet is accepted. Otherwise, it's dropped silently.
1338 *
1339 * To use the 6 bits as an offset into the table, the high 1 bit is
1340 * the number of the 32 bit register, while the low 5 bits are the bit
1341 * within that register.
1342 */
1343 else if (dev->mc_count) {
1344 int i;
1345 struct dev_mc_list *cur_addr;
1346
1347 /* Set the Hash perfec mode */
1348 mcr |= MAC_CR_HPFILT_;
1349
1350 /* start with a table of all zeros: reject all */
1351 memset(multicast_table, 0, sizeof(multicast_table));
1352
1353 cur_addr = dev->mc_list;
1354 for (i = 0; i < dev->mc_count; i++, cur_addr = cur_addr->next) {
Peter Korsgaard7b31f7f2007-11-22 12:25:13 +01001355 u32 position;
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001356
1357 /* do we have a pointer here? */
1358 if (!cur_addr)
1359 break;
1360 /* make sure this is a multicast address -
1361 shouldn't this be a given if we have it here ? */
1362 if (!(*cur_addr->dmi_addr & 1))
1363 continue;
1364
Peter Korsgaard7b31f7f2007-11-22 12:25:13 +01001365 /* upper 6 bits are used as hash index */
1366 position = ether_crc(ETH_ALEN, cur_addr->dmi_addr)>>26;
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001367
Peter Korsgaard7b31f7f2007-11-22 12:25:13 +01001368 multicast_table[position>>5] |= 1 << (position&0x1f);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001369 }
1370
1371 /* be sure I get rid of flags I might have set */
1372 mcr &= ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_);
1373
1374 /* now, the table can be loaded into the chipset */
1375 update_multicast = 1;
1376 } else {
Jeff Garzikd5498be2006-04-20 17:39:14 -04001377 DBG(SMC_DEBUG_MISC, "%s: ~(MAC_CR_PRMS_|MAC_CR_MCPAS_)\n",
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001378 dev->name);
1379 mcr &= ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_);
1380
1381 /*
1382 * since I'm disabling all multicast entirely, I need to
1383 * clear the multicast list
1384 */
1385 memset(multicast_table, 0, sizeof(multicast_table));
1386 update_multicast = 1;
1387 }
1388
1389 spin_lock_irqsave(&lp->lock, flags);
Magnus Damm699559f2008-06-09 16:33:54 -07001390 SMC_SET_MAC_CR(lp, mcr);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001391 if (update_multicast) {
Jeff Garzikd5498be2006-04-20 17:39:14 -04001392 DBG(SMC_DEBUG_MISC,
1393 "%s: update mcast hash table 0x%08x 0x%08x\n",
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001394 dev->name, multicast_table[0], multicast_table[1]);
Magnus Damm699559f2008-06-09 16:33:54 -07001395 SMC_SET_HASHL(lp, multicast_table[0]);
1396 SMC_SET_HASHH(lp, multicast_table[1]);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001397 }
1398 spin_unlock_irqrestore(&lp->lock, flags);
1399}
1400
1401
1402/*
1403 * Open and Initialize the board
1404 *
1405 * Set up everything, reset the card, etc..
1406 */
1407static int
1408smc911x_open(struct net_device *dev)
1409{
Andrew Mortonef8142a2006-12-22 01:08:33 -08001410 struct smc911x_local *lp = netdev_priv(dev);
1411
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07001412 DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __func__);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001413
1414 /*
1415 * Check that the address is valid. If its not, refuse
1416 * to bring the device up. The user must specify an
1417 * address using ifconfig eth0 hw ether xx:xx:xx:xx:xx:xx
1418 */
1419 if (!is_valid_ether_addr(dev->dev_addr)) {
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07001420 PRINTK("%s: no valid ethernet hw addr\n", __func__);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001421 return -EINVAL;
1422 }
1423
1424 /* reset the hardware */
1425 smc911x_reset(dev);
1426
1427 /* Configure the PHY, initialize the link state */
Andrew Mortonef8142a2006-12-22 01:08:33 -08001428 smc911x_phy_configure(&lp->phy_configure);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001429
1430 /* Turn on Tx + Rx */
1431 smc911x_enable(dev);
1432
1433 netif_start_queue(dev);
1434
1435 return 0;
1436}
1437
1438/*
1439 * smc911x_close
1440 *
1441 * this makes the board clean up everything that it can
1442 * and not talk to the outside world. Caused by
1443 * an 'ifconfig ethX down'
1444 */
1445static int smc911x_close(struct net_device *dev)
1446{
1447 struct smc911x_local *lp = netdev_priv(dev);
1448
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07001449 DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __func__);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001450
1451 netif_stop_queue(dev);
1452 netif_carrier_off(dev);
1453
1454 /* clear everything */
1455 smc911x_shutdown(dev);
1456
1457 if (lp->phy_type != 0) {
1458 /* We need to ensure that no calls to
1459 * smc911x_phy_configure are pending.
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001460 */
David S. Miller4bb073c2008-06-12 02:22:02 -07001461 cancel_work_sync(&lp->phy_configure);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001462 smc911x_phy_powerdown(dev, lp->mii.phy_id);
1463 }
1464
1465 if (lp->pending_tx_skb) {
1466 dev_kfree_skb(lp->pending_tx_skb);
1467 lp->pending_tx_skb = NULL;
1468 }
1469
1470 return 0;
1471}
1472
1473/*
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001474 * Ethtool support
1475 */
1476static int
1477smc911x_ethtool_getsettings(struct net_device *dev, struct ethtool_cmd *cmd)
1478{
1479 struct smc911x_local *lp = netdev_priv(dev);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001480 int ret, status;
1481 unsigned long flags;
1482
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07001483 DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __func__);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001484 cmd->maxtxpkt = 1;
1485 cmd->maxrxpkt = 1;
1486
1487 if (lp->phy_type != 0) {
1488 spin_lock_irqsave(&lp->lock, flags);
1489 ret = mii_ethtool_gset(&lp->mii, cmd);
1490 spin_unlock_irqrestore(&lp->lock, flags);
1491 } else {
1492 cmd->supported = SUPPORTED_10baseT_Half |
1493 SUPPORTED_10baseT_Full |
1494 SUPPORTED_TP | SUPPORTED_AUI;
1495
1496 if (lp->ctl_rspeed == 10)
1497 cmd->speed = SPEED_10;
1498 else if (lp->ctl_rspeed == 100)
1499 cmd->speed = SPEED_100;
1500
1501 cmd->autoneg = AUTONEG_DISABLE;
1502 if (lp->mii.phy_id==1)
1503 cmd->transceiver = XCVR_INTERNAL;
1504 else
1505 cmd->transceiver = XCVR_EXTERNAL;
1506 cmd->port = 0;
Magnus Damm699559f2008-06-09 16:33:54 -07001507 SMC_GET_PHY_SPECIAL(lp, lp->mii.phy_id, status);
Jeff Garzikd5498be2006-04-20 17:39:14 -04001508 cmd->duplex =
1509 (status & (PHY_SPECIAL_SPD_10FULL_ | PHY_SPECIAL_SPD_100FULL_)) ?
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001510 DUPLEX_FULL : DUPLEX_HALF;
1511 ret = 0;
1512 }
1513
1514 return ret;
1515}
1516
1517static int
1518smc911x_ethtool_setsettings(struct net_device *dev, struct ethtool_cmd *cmd)
1519{
1520 struct smc911x_local *lp = netdev_priv(dev);
1521 int ret;
1522 unsigned long flags;
1523
1524 if (lp->phy_type != 0) {
1525 spin_lock_irqsave(&lp->lock, flags);
1526 ret = mii_ethtool_sset(&lp->mii, cmd);
1527 spin_unlock_irqrestore(&lp->lock, flags);
1528 } else {
1529 if (cmd->autoneg != AUTONEG_DISABLE ||
1530 cmd->speed != SPEED_10 ||
1531 (cmd->duplex != DUPLEX_HALF && cmd->duplex != DUPLEX_FULL) ||
1532 (cmd->port != PORT_TP && cmd->port != PORT_AUI))
1533 return -EINVAL;
1534
1535 lp->ctl_rfduplx = cmd->duplex == DUPLEX_FULL;
1536
1537 ret = 0;
1538 }
1539
1540 return ret;
1541}
1542
1543static void
1544smc911x_ethtool_getdrvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1545{
1546 strncpy(info->driver, CARDNAME, sizeof(info->driver));
1547 strncpy(info->version, version, sizeof(info->version));
Kay Sieversdb1d7bf2009-01-26 21:12:58 -08001548 strncpy(info->bus_info, dev_name(dev->dev.parent), sizeof(info->bus_info));
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001549}
1550
1551static int smc911x_ethtool_nwayreset(struct net_device *dev)
1552{
1553 struct smc911x_local *lp = netdev_priv(dev);
1554 int ret = -EINVAL;
1555 unsigned long flags;
1556
1557 if (lp->phy_type != 0) {
1558 spin_lock_irqsave(&lp->lock, flags);
1559 ret = mii_nway_restart(&lp->mii);
1560 spin_unlock_irqrestore(&lp->lock, flags);
1561 }
1562
1563 return ret;
1564}
1565
1566static u32 smc911x_ethtool_getmsglevel(struct net_device *dev)
1567{
1568 struct smc911x_local *lp = netdev_priv(dev);
1569 return lp->msg_enable;
1570}
1571
1572static void smc911x_ethtool_setmsglevel(struct net_device *dev, u32 level)
1573{
1574 struct smc911x_local *lp = netdev_priv(dev);
1575 lp->msg_enable = level;
1576}
1577
1578static int smc911x_ethtool_getregslen(struct net_device *dev)
1579{
1580 /* System regs + MAC regs + PHY regs */
Jeff Garzikd5498be2006-04-20 17:39:14 -04001581 return (((E2P_CMD - ID_REV)/4 + 1) +
1582 (WUCSR - MAC_CR)+1 + 32) * sizeof(u32);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001583}
1584
Jeff Garzikd5498be2006-04-20 17:39:14 -04001585static void smc911x_ethtool_getregs(struct net_device *dev,
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001586 struct ethtool_regs* regs, void *buf)
1587{
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001588 struct smc911x_local *lp = netdev_priv(dev);
1589 unsigned long flags;
1590 u32 reg,i,j=0;
1591 u32 *data = (u32*)buf;
1592
1593 regs->version = lp->version;
1594 for(i=ID_REV;i<=E2P_CMD;i+=4) {
Magnus Damm699559f2008-06-09 16:33:54 -07001595 data[j++] = SMC_inl(lp, i);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001596 }
1597 for(i=MAC_CR;i<=WUCSR;i++) {
1598 spin_lock_irqsave(&lp->lock, flags);
Magnus Damm699559f2008-06-09 16:33:54 -07001599 SMC_GET_MAC_CSR(lp, i, reg);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001600 spin_unlock_irqrestore(&lp->lock, flags);
Jeff Garzikd5498be2006-04-20 17:39:14 -04001601 data[j++] = reg;
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001602 }
1603 for(i=0;i<=31;i++) {
1604 spin_lock_irqsave(&lp->lock, flags);
Magnus Damm699559f2008-06-09 16:33:54 -07001605 SMC_GET_MII(lp, i, lp->mii.phy_id, reg);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001606 spin_unlock_irqrestore(&lp->lock, flags);
Jeff Garzikd5498be2006-04-20 17:39:14 -04001607 data[j++] = reg & 0xFFFF;
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001608 }
1609}
1610
1611static int smc911x_ethtool_wait_eeprom_ready(struct net_device *dev)
1612{
Magnus Damm699559f2008-06-09 16:33:54 -07001613 struct smc911x_local *lp = netdev_priv(dev);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001614 unsigned int timeout;
1615 int e2p_cmd;
1616
Magnus Damm699559f2008-06-09 16:33:54 -07001617 e2p_cmd = SMC_GET_E2P_CMD(lp);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001618 for(timeout=10;(e2p_cmd & E2P_CMD_EPC_BUSY_) && timeout; timeout--) {
1619 if (e2p_cmd & E2P_CMD_EPC_TIMEOUT_) {
Jeff Garzikd5498be2006-04-20 17:39:14 -04001620 PRINTK("%s: %s timeout waiting for EEPROM to respond\n",
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07001621 dev->name, __func__);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001622 return -EFAULT;
Jeff Garzikd5498be2006-04-20 17:39:14 -04001623 }
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001624 mdelay(1);
Magnus Damm699559f2008-06-09 16:33:54 -07001625 e2p_cmd = SMC_GET_E2P_CMD(lp);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001626 }
1627 if (timeout == 0) {
Jeff Garzikd5498be2006-04-20 17:39:14 -04001628 PRINTK("%s: %s timeout waiting for EEPROM CMD not busy\n",
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07001629 dev->name, __func__);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001630 return -ETIMEDOUT;
1631 }
1632 return 0;
1633}
1634
Jeff Garzikd5498be2006-04-20 17:39:14 -04001635static inline int smc911x_ethtool_write_eeprom_cmd(struct net_device *dev,
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001636 int cmd, int addr)
1637{
Magnus Damm699559f2008-06-09 16:33:54 -07001638 struct smc911x_local *lp = netdev_priv(dev);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001639 int ret;
1640
Jeff Garzikd5498be2006-04-20 17:39:14 -04001641 if ((ret = smc911x_ethtool_wait_eeprom_ready(dev))!=0)
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001642 return ret;
Magnus Damm699559f2008-06-09 16:33:54 -07001643 SMC_SET_E2P_CMD(lp, E2P_CMD_EPC_BUSY_ |
Jeff Garzikd5498be2006-04-20 17:39:14 -04001644 ((cmd) & (0x7<<28)) |
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001645 ((addr) & 0xFF));
1646 return 0;
1647}
1648
Jeff Garzikd5498be2006-04-20 17:39:14 -04001649static inline int smc911x_ethtool_read_eeprom_byte(struct net_device *dev,
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001650 u8 *data)
1651{
Magnus Damm699559f2008-06-09 16:33:54 -07001652 struct smc911x_local *lp = netdev_priv(dev);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001653 int ret;
1654
Jeff Garzikd5498be2006-04-20 17:39:14 -04001655 if ((ret = smc911x_ethtool_wait_eeprom_ready(dev))!=0)
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001656 return ret;
Magnus Damm699559f2008-06-09 16:33:54 -07001657 *data = SMC_GET_E2P_DATA(lp);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001658 return 0;
1659}
1660
Jeff Garzikd5498be2006-04-20 17:39:14 -04001661static inline int smc911x_ethtool_write_eeprom_byte(struct net_device *dev,
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001662 u8 data)
1663{
Magnus Damm699559f2008-06-09 16:33:54 -07001664 struct smc911x_local *lp = netdev_priv(dev);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001665 int ret;
1666
Jeff Garzikd5498be2006-04-20 17:39:14 -04001667 if ((ret = smc911x_ethtool_wait_eeprom_ready(dev))!=0)
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001668 return ret;
Magnus Damm699559f2008-06-09 16:33:54 -07001669 SMC_SET_E2P_DATA(lp, data);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001670 return 0;
1671}
1672
Jeff Garzikd5498be2006-04-20 17:39:14 -04001673static int smc911x_ethtool_geteeprom(struct net_device *dev,
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001674 struct ethtool_eeprom *eeprom, u8 *data)
1675{
1676 u8 eebuf[SMC911X_EEPROM_LEN];
1677 int i, ret;
1678
1679 for(i=0;i<SMC911X_EEPROM_LEN;i++) {
1680 if ((ret=smc911x_ethtool_write_eeprom_cmd(dev, E2P_CMD_EPC_CMD_READ_, i ))!=0)
1681 return ret;
1682 if ((ret=smc911x_ethtool_read_eeprom_byte(dev, &eebuf[i]))!=0)
1683 return ret;
1684 }
1685 memcpy(data, eebuf+eeprom->offset, eeprom->len);
Jeff Garzikd5498be2006-04-20 17:39:14 -04001686 return 0;
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001687}
1688
Jeff Garzikd5498be2006-04-20 17:39:14 -04001689static int smc911x_ethtool_seteeprom(struct net_device *dev,
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001690 struct ethtool_eeprom *eeprom, u8 *data)
1691{
1692 int i, ret;
1693
1694 /* Enable erase */
1695 if ((ret=smc911x_ethtool_write_eeprom_cmd(dev, E2P_CMD_EPC_CMD_EWEN_, 0 ))!=0)
1696 return ret;
1697 for(i=eeprom->offset;i<(eeprom->offset+eeprom->len);i++) {
1698 /* erase byte */
1699 if ((ret=smc911x_ethtool_write_eeprom_cmd(dev, E2P_CMD_EPC_CMD_ERASE_, i ))!=0)
1700 return ret;
1701 /* write byte */
1702 if ((ret=smc911x_ethtool_write_eeprom_byte(dev, *data))!=0)
1703 return ret;
1704 if ((ret=smc911x_ethtool_write_eeprom_cmd(dev, E2P_CMD_EPC_CMD_WRITE_, i ))!=0)
1705 return ret;
1706 }
1707 return 0;
1708}
1709
1710static int smc911x_ethtool_geteeprom_len(struct net_device *dev)
1711{
1712 return SMC911X_EEPROM_LEN;
1713}
1714
Jeff Garzik7282d492006-09-13 14:30:00 -04001715static const struct ethtool_ops smc911x_ethtool_ops = {
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001716 .get_settings = smc911x_ethtool_getsettings,
1717 .set_settings = smc911x_ethtool_setsettings,
1718 .get_drvinfo = smc911x_ethtool_getdrvinfo,
1719 .get_msglevel = smc911x_ethtool_getmsglevel,
1720 .set_msglevel = smc911x_ethtool_setmsglevel,
1721 .nway_reset = smc911x_ethtool_nwayreset,
1722 .get_link = ethtool_op_get_link,
1723 .get_regs_len = smc911x_ethtool_getregslen,
1724 .get_regs = smc911x_ethtool_getregs,
1725 .get_eeprom_len = smc911x_ethtool_geteeprom_len,
1726 .get_eeprom = smc911x_ethtool_geteeprom,
1727 .set_eeprom = smc911x_ethtool_seteeprom,
1728};
1729
1730/*
1731 * smc911x_findirq
1732 *
1733 * This routine has a simple purpose -- make the SMC chip generate an
1734 * interrupt, so an auto-detect routine can detect it, and find the IRQ,
1735 */
Al Virof57628d2008-11-22 17:36:14 +00001736static int __devinit smc911x_findirq(struct net_device *dev)
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001737{
Magnus Damm699559f2008-06-09 16:33:54 -07001738 struct smc911x_local *lp = netdev_priv(dev);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001739 int timeout = 20;
1740 unsigned long cookie;
1741
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07001742 DBG(SMC_DEBUG_FUNC, "--> %s\n", __func__);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001743
1744 cookie = probe_irq_on();
1745
1746 /*
1747 * Force a SW interrupt
1748 */
1749
Magnus Damm699559f2008-06-09 16:33:54 -07001750 SMC_SET_INT_EN(lp, INT_EN_SW_INT_EN_);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001751
1752 /*
1753 * Wait until positive that the interrupt has been generated
1754 */
1755 do {
1756 int int_status;
1757 udelay(10);
Magnus Damm699559f2008-06-09 16:33:54 -07001758 int_status = SMC_GET_INT_EN(lp);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001759 if (int_status & INT_EN_SW_INT_EN_)
1760 break; /* got the interrupt */
1761 } while (--timeout);
1762
1763 /*
1764 * there is really nothing that I can do here if timeout fails,
1765 * as autoirq_report will return a 0 anyway, which is what I
1766 * want in this case. Plus, the clean up is needed in both
1767 * cases.
1768 */
1769
1770 /* and disable all interrupts again */
Magnus Damm699559f2008-06-09 16:33:54 -07001771 SMC_SET_INT_EN(lp, 0);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001772
1773 /* and return what I found */
1774 return probe_irq_off(cookie);
1775}
1776
1777/*
1778 * Function: smc911x_probe(unsigned long ioaddr)
1779 *
1780 * Purpose:
1781 * Tests to see if a given ioaddr points to an SMC911x chip.
1782 * Returns a 0 on success
1783 *
1784 * Algorithm:
1785 * (1) see if the endian word is OK
1786 * (1) see if I recognize the chip ID in the appropriate register
1787 *
1788 * Here I do typical initialization tasks.
1789 *
1790 * o Initialize the structure if needed
1791 * o print out my vanity message if not done so already
1792 * o print out what type of hardware is detected
1793 * o print out the ethernet address
1794 * o find the IRQ
1795 * o set up my private data
1796 * o configure the dev structure with my subroutines
1797 * o actually GRAB the irq.
1798 * o GRAB the region
1799 */
Al Virof57628d2008-11-22 17:36:14 +00001800static int __devinit smc911x_probe(struct net_device *dev)
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001801{
1802 struct smc911x_local *lp = netdev_priv(dev);
1803 int i, retval;
1804 unsigned int val, chip_id, revision;
1805 const char *version_string;
Magnus Damm12c03f52008-06-09 16:33:55 -07001806 unsigned long irq_flags;
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001807
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07001808 DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __func__);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001809
1810 /* First, see if the endian word is recognized */
Magnus Damm699559f2008-06-09 16:33:54 -07001811 val = SMC_GET_BYTE_TEST(lp);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001812 DBG(SMC_DEBUG_MISC, "%s: endian probe returned 0x%04x\n", CARDNAME, val);
1813 if (val != 0x87654321) {
Vernon Saudereafdcb42008-11-20 01:56:08 -08001814 printk(KERN_ERR "Invalid chip endian 0x%08x\n",val);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001815 retval = -ENODEV;
1816 goto err_out;
1817 }
1818
1819 /*
1820 * check if the revision register is something that I
1821 * recognize. These might need to be added to later,
1822 * as future revisions could be added.
1823 */
Magnus Damm699559f2008-06-09 16:33:54 -07001824 chip_id = SMC_GET_PN(lp);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001825 DBG(SMC_DEBUG_MISC, "%s: id probe returned 0x%04x\n", CARDNAME, chip_id);
1826 for(i=0;chip_ids[i].id != 0; i++) {
1827 if (chip_ids[i].id == chip_id) break;
1828 }
1829 if (!chip_ids[i].id) {
1830 printk(KERN_ERR "Unknown chip ID %04x\n", chip_id);
1831 retval = -ENODEV;
1832 goto err_out;
1833 }
1834 version_string = chip_ids[i].name;
1835
Magnus Damm699559f2008-06-09 16:33:54 -07001836 revision = SMC_GET_REV(lp);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001837 DBG(SMC_DEBUG_MISC, "%s: revision = 0x%04x\n", CARDNAME, revision);
1838
1839 /* At this point I'll assume that the chip is an SMC911x. */
1840 DBG(SMC_DEBUG_MISC, "%s: Found a %s\n", CARDNAME, chip_ids[i].name);
1841
1842 /* Validate the TX FIFO size requested */
1843 if ((tx_fifo_kb < 2) || (tx_fifo_kb > 14)) {
1844 printk(KERN_ERR "Invalid TX FIFO size requested %d\n", tx_fifo_kb);
1845 retval = -EINVAL;
1846 goto err_out;
1847 }
Jeff Garzikd5498be2006-04-20 17:39:14 -04001848
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001849 /* fill in some of the fields */
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001850 lp->version = chip_ids[i].id;
1851 lp->revision = revision;
1852 lp->tx_fifo_kb = tx_fifo_kb;
1853 /* Reverse calculate the RX FIFO size from the TX */
1854 lp->tx_fifo_size=(lp->tx_fifo_kb<<10) - 512;
1855 lp->rx_fifo_size= ((0x4000 - 512 - lp->tx_fifo_size) / 16) * 15;
1856
1857 /* Set the automatic flow control values */
1858 switch(lp->tx_fifo_kb) {
Jeff Garzikd5498be2006-04-20 17:39:14 -04001859 /*
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001860 * AFC_HI is about ((Rx Data Fifo Size)*2/3)/64
1861 * AFC_LO is AFC_HI/2
1862 * BACK_DUR is about 5uS*(AFC_LO) rounded down
1863 */
1864 case 2:/* 13440 Rx Data Fifo Size */
1865 lp->afc_cfg=0x008C46AF;break;
1866 case 3:/* 12480 Rx Data Fifo Size */
1867 lp->afc_cfg=0x0082419F;break;
1868 case 4:/* 11520 Rx Data Fifo Size */
1869 lp->afc_cfg=0x00783C9F;break;
1870 case 5:/* 10560 Rx Data Fifo Size */
1871 lp->afc_cfg=0x006E374F;break;
1872 case 6:/* 9600 Rx Data Fifo Size */
1873 lp->afc_cfg=0x0064328F;break;
1874 case 7:/* 8640 Rx Data Fifo Size */
1875 lp->afc_cfg=0x005A2D7F;break;
1876 case 8:/* 7680 Rx Data Fifo Size */
1877 lp->afc_cfg=0x0050287F;break;
1878 case 9:/* 6720 Rx Data Fifo Size */
1879 lp->afc_cfg=0x0046236F;break;
1880 case 10:/* 5760 Rx Data Fifo Size */
1881 lp->afc_cfg=0x003C1E6F;break;
1882 case 11:/* 4800 Rx Data Fifo Size */
1883 lp->afc_cfg=0x0032195F;break;
Jeff Garzikd5498be2006-04-20 17:39:14 -04001884 /*
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001885 * AFC_HI is ~1520 bytes less than RX Data Fifo Size
1886 * AFC_LO is AFC_HI/2
1887 * BACK_DUR is about 5uS*(AFC_LO) rounded down
1888 */
1889 case 12:/* 3840 Rx Data Fifo Size */
1890 lp->afc_cfg=0x0024124F;break;
1891 case 13:/* 2880 Rx Data Fifo Size */
1892 lp->afc_cfg=0x0015073F;break;
1893 case 14:/* 1920 Rx Data Fifo Size */
1894 lp->afc_cfg=0x0006032F;break;
1895 default:
Jeff Garzikd5498be2006-04-20 17:39:14 -04001896 PRINTK("%s: ERROR -- no AFC_CFG setting found",
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001897 dev->name);
1898 break;
1899 }
1900
Jeff Garzikd5498be2006-04-20 17:39:14 -04001901 DBG(SMC_DEBUG_MISC | SMC_DEBUG_TX | SMC_DEBUG_RX,
1902 "%s: tx_fifo %d rx_fifo %d afc_cfg 0x%08x\n", CARDNAME,
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001903 lp->tx_fifo_size, lp->rx_fifo_size, lp->afc_cfg);
1904
1905 spin_lock_init(&lp->lock);
1906
1907 /* Get the MAC address */
Magnus Damm699559f2008-06-09 16:33:54 -07001908 SMC_GET_MAC_ADDR(lp, dev->dev_addr);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001909
1910 /* now, reset the chip, and put it into a known state */
1911 smc911x_reset(dev);
1912
1913 /*
1914 * If dev->irq is 0, then the device has to be banged on to see
1915 * what the IRQ is.
1916 *
1917 * Specifying an IRQ is done with the assumption that the user knows
1918 * what (s)he is doing. No checking is done!!!!
1919 */
1920 if (dev->irq < 1) {
1921 int trials;
1922
1923 trials = 3;
1924 while (trials--) {
Magnus Damm699559f2008-06-09 16:33:54 -07001925 dev->irq = smc911x_findirq(dev);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001926 if (dev->irq)
1927 break;
1928 /* kick the card and try again */
1929 smc911x_reset(dev);
1930 }
1931 }
1932 if (dev->irq == 0) {
1933 printk("%s: Couldn't autodetect your IRQ. Use irq=xx.\n",
1934 dev->name);
1935 retval = -ENODEV;
1936 goto err_out;
1937 }
1938 dev->irq = irq_canonicalize(dev->irq);
1939
1940 /* Fill in the fields of the device structure with ethernet values. */
1941 ether_setup(dev);
1942
1943 dev->open = smc911x_open;
1944 dev->stop = smc911x_close;
1945 dev->hard_start_xmit = smc911x_hard_start_xmit;
1946 dev->tx_timeout = smc911x_timeout;
1947 dev->watchdog_timeo = msecs_to_jiffies(watchdog);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001948 dev->set_multicast_list = smc911x_set_multicast_list;
1949 dev->ethtool_ops = &smc911x_ethtool_ops;
1950#ifdef CONFIG_NET_POLL_CONTROLLER
1951 dev->poll_controller = smc911x_poll_controller;
1952#endif
1953
Andrew Mortonef8142a2006-12-22 01:08:33 -08001954 INIT_WORK(&lp->phy_configure, smc911x_phy_configure);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001955 lp->mii.phy_id_mask = 0x1f;
1956 lp->mii.reg_num_mask = 0x1f;
1957 lp->mii.force_media = 0;
1958 lp->mii.full_duplex = 0;
1959 lp->mii.dev = dev;
1960 lp->mii.mdio_read = smc911x_phy_read;
1961 lp->mii.mdio_write = smc911x_phy_write;
1962
1963 /*
1964 * Locate the phy, if any.
1965 */
1966 smc911x_phy_detect(dev);
1967
1968 /* Set default parameters */
1969 lp->msg_enable = NETIF_MSG_LINK;
1970 lp->ctl_rfduplx = 1;
1971 lp->ctl_rspeed = 100;
1972
Magnus Damm12c03f52008-06-09 16:33:55 -07001973#ifdef SMC_DYNAMIC_BUS_CONFIG
1974 irq_flags = lp->cfg.irq_flags;
1975#else
1976 irq_flags = IRQF_SHARED | SMC_IRQ_SENSE;
1977#endif
1978
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001979 /* Grab the IRQ */
Vitaly Woolf2773a22007-05-13 18:42:08 +04001980 retval = request_irq(dev->irq, &smc911x_interrupt,
Magnus Damm12c03f52008-06-09 16:33:55 -07001981 irq_flags, dev->name, dev);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001982 if (retval)
1983 goto err_out;
1984
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07001985#ifdef SMC_USE_DMA
1986 lp->rxdma = SMC_DMA_REQUEST(dev, smc911x_rx_dma_irq);
1987 lp->txdma = SMC_DMA_REQUEST(dev, smc911x_tx_dma_irq);
1988 lp->rxdma_active = 0;
1989 lp->txdma_active = 0;
1990 dev->dma = lp->rxdma;
1991#endif
1992
1993 retval = register_netdev(dev);
1994 if (retval == 0) {
1995 /* now, print out the card info, in a short format.. */
1996 printk("%s: %s (rev %d) at %#lx IRQ %d",
1997 dev->name, version_string, lp->revision,
1998 dev->base_addr, dev->irq);
1999
2000#ifdef SMC_USE_DMA
2001 if (lp->rxdma != -1)
2002 printk(" RXDMA %d ", lp->rxdma);
2003
2004 if (lp->txdma != -1)
2005 printk("TXDMA %d", lp->txdma);
2006#endif
2007 printk("\n");
2008 if (!is_valid_ether_addr(dev->dev_addr)) {
2009 printk("%s: Invalid ethernet MAC address. Please "
2010 "set using ifconfig\n", dev->name);
2011 } else {
2012 /* Print the Ethernet address */
2013 printk("%s: Ethernet addr: ", dev->name);
2014 for (i = 0; i < 5; i++)
2015 printk("%2.2x:", dev->dev_addr[i]);
2016 printk("%2.2x\n", dev->dev_addr[5]);
2017 }
2018
2019 if (lp->phy_type == 0) {
2020 PRINTK("%s: No PHY found\n", dev->name);
2021 } else if ((lp->phy_type & ~0xff) == LAN911X_INTERNAL_PHY_ID) {
2022 PRINTK("%s: LAN911x Internal PHY\n", dev->name);
2023 } else {
2024 PRINTK("%s: External PHY 0x%08x\n", dev->name, lp->phy_type);
2025 }
2026 }
Jeff Garzikd5498be2006-04-20 17:39:14 -04002027
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07002028err_out:
2029#ifdef SMC_USE_DMA
2030 if (retval) {
2031 if (lp->rxdma != -1) {
2032 SMC_DMA_FREE(dev, lp->rxdma);
2033 }
2034 if (lp->txdma != -1) {
2035 SMC_DMA_FREE(dev, lp->txdma);
2036 }
2037 }
2038#endif
2039 return retval;
2040}
2041
2042/*
2043 * smc911x_init(void)
2044 *
2045 * Output:
2046 * 0 --> there is a device
2047 * anything else, error
2048 */
Al Virof57628d2008-11-22 17:36:14 +00002049static int __devinit smc911x_drv_probe(struct platform_device *pdev)
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07002050{
2051 struct net_device *ndev;
2052 struct resource *res;
Andrew Mortonef8142a2006-12-22 01:08:33 -08002053 struct smc911x_local *lp;
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07002054 unsigned int *addr;
2055 int ret;
2056
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07002057 DBG(SMC_DEBUG_FUNC, "--> %s\n", __func__);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07002058 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2059 if (!res) {
2060 ret = -ENODEV;
2061 goto out;
2062 }
2063
2064 /*
2065 * Request the regions.
2066 */
2067 if (!request_mem_region(res->start, SMC911X_IO_EXTENT, CARDNAME)) {
2068 ret = -EBUSY;
2069 goto out;
2070 }
2071
2072 ndev = alloc_etherdev(sizeof(struct smc911x_local));
2073 if (!ndev) {
2074 printk("%s: could not allocate device.\n", CARDNAME);
2075 ret = -ENOMEM;
2076 goto release_1;
2077 }
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07002078 SET_NETDEV_DEV(ndev, &pdev->dev);
2079
2080 ndev->dma = (unsigned char)-1;
2081 ndev->irq = platform_get_irq(pdev, 0);
Andrew Mortonef8142a2006-12-22 01:08:33 -08002082 lp = netdev_priv(ndev);
2083 lp->netdev = ndev;
Magnus Damm12c03f52008-06-09 16:33:55 -07002084#ifdef SMC_DYNAMIC_BUS_CONFIG
Andrew Mortona3160842008-12-01 12:24:46 +00002085 {
2086 struct smc911x_platdata *pd = pdev->dev.platform_data;
2087 if (!pd) {
2088 ret = -EINVAL;
2089 goto release_both;
2090 }
2091 memcpy(&lp->cfg, pd, sizeof(lp->cfg));
Magnus Damm12c03f52008-06-09 16:33:55 -07002092 }
Magnus Damm12c03f52008-06-09 16:33:55 -07002093#endif
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07002094
2095 addr = ioremap(res->start, SMC911X_IO_EXTENT);
2096 if (!addr) {
2097 ret = -ENOMEM;
2098 goto release_both;
2099 }
2100
2101 platform_set_drvdata(pdev, ndev);
Magnus Damm699559f2008-06-09 16:33:54 -07002102 lp->base = addr;
2103 ndev->base_addr = res->start;
2104 ret = smc911x_probe(ndev);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07002105 if (ret != 0) {
2106 platform_set_drvdata(pdev, NULL);
2107 iounmap(addr);
2108release_both:
2109 free_netdev(ndev);
2110release_1:
2111 release_mem_region(res->start, SMC911X_IO_EXTENT);
2112out:
2113 printk("%s: not found (%d).\n", CARDNAME, ret);
2114 }
2115#ifdef SMC_USE_DMA
2116 else {
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07002117 lp->physaddr = res->start;
2118 lp->dev = &pdev->dev;
2119 }
2120#endif
2121
2122 return ret;
2123}
2124
Al Virof57628d2008-11-22 17:36:14 +00002125static int __devexit smc911x_drv_remove(struct platform_device *pdev)
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07002126{
2127 struct net_device *ndev = platform_get_drvdata(pdev);
Magnus Damm699559f2008-06-09 16:33:54 -07002128 struct smc911x_local *lp = netdev_priv(ndev);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07002129 struct resource *res;
2130
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07002131 DBG(SMC_DEBUG_FUNC, "--> %s\n", __func__);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07002132 platform_set_drvdata(pdev, NULL);
2133
2134 unregister_netdev(ndev);
2135
2136 free_irq(ndev->irq, ndev);
2137
2138#ifdef SMC_USE_DMA
2139 {
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07002140 if (lp->rxdma != -1) {
2141 SMC_DMA_FREE(dev, lp->rxdma);
2142 }
2143 if (lp->txdma != -1) {
2144 SMC_DMA_FREE(dev, lp->txdma);
2145 }
2146 }
2147#endif
Magnus Damm699559f2008-06-09 16:33:54 -07002148 iounmap(lp->base);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07002149 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2150 release_mem_region(res->start, SMC911X_IO_EXTENT);
2151
2152 free_netdev(ndev);
2153 return 0;
2154}
2155
2156static int smc911x_drv_suspend(struct platform_device *dev, pm_message_t state)
2157{
2158 struct net_device *ndev = platform_get_drvdata(dev);
Magnus Damm699559f2008-06-09 16:33:54 -07002159 struct smc911x_local *lp = netdev_priv(ndev);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07002160
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07002161 DBG(SMC_DEBUG_FUNC, "--> %s\n", __func__);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07002162 if (ndev) {
2163 if (netif_running(ndev)) {
2164 netif_device_detach(ndev);
2165 smc911x_shutdown(ndev);
2166#if POWER_DOWN
2167 /* Set D2 - Energy detect only setting */
Magnus Damm699559f2008-06-09 16:33:54 -07002168 SMC_SET_PMT_CTRL(lp, 2<<12);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07002169#endif
2170 }
2171 }
2172 return 0;
2173}
2174
2175static int smc911x_drv_resume(struct platform_device *dev)
2176{
2177 struct net_device *ndev = platform_get_drvdata(dev);
2178
Harvey Harrisonb39d66a2008-08-20 16:52:04 -07002179 DBG(SMC_DEBUG_FUNC, "--> %s\n", __func__);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07002180 if (ndev) {
2181 struct smc911x_local *lp = netdev_priv(ndev);
2182
2183 if (netif_running(ndev)) {
2184 smc911x_reset(ndev);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07002185 if (lp->phy_type != 0)
Andrew Mortonef8142a2006-12-22 01:08:33 -08002186 smc911x_phy_configure(&lp->phy_configure);
Dasgupta, Romit347c8d82008-11-06 15:46:18 +05302187 smc911x_enable(ndev);
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07002188 netif_device_attach(ndev);
2189 }
2190 }
2191 return 0;
2192}
2193
2194static struct platform_driver smc911x_driver = {
2195 .probe = smc911x_drv_probe,
Al Virof57628d2008-11-22 17:36:14 +00002196 .remove = __devexit_p(smc911x_drv_remove),
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07002197 .suspend = smc911x_drv_suspend,
2198 .resume = smc911x_drv_resume,
2199 .driver = {
2200 .name = CARDNAME,
Kay Sievers72abb462008-04-18 13:50:44 -07002201 .owner = THIS_MODULE,
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07002202 },
2203};
Jeff Garzikd5498be2006-04-20 17:39:14 -04002204
Dustin McIntire0a0c72c2006-04-19 20:24:51 -07002205static int __init smc911x_init(void)
2206{
2207 return platform_driver_register(&smc911x_driver);
2208}
2209
2210static void __exit smc911x_cleanup(void)
2211{
2212 platform_driver_unregister(&smc911x_driver);
2213}
2214
2215module_init(smc911x_init);
2216module_exit(smc911x_cleanup);