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0a0c72c9 DM |
1 | /* |
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 | |
d5498bef | 7 | * and the smsc911x.c reference driver by SMSC |
0a0c72c9 DM |
8 | * |
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 | */ | |
30 | static 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 | ||
0a0c72c9 DM |
58 | #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> | |
80 | #include <asm/irq.h> | |
81 | ||
82 | #include "smc911x.h" | |
83 | ||
84 | /* | |
85 | * Transmit timeout, default 5 seconds. | |
86 | */ | |
87 | static int watchdog = 5000; | |
88 | module_param(watchdog, int, 0400); | |
89 | MODULE_PARM_DESC(watchdog, "transmit timeout in milliseconds"); | |
90 | ||
91 | static int tx_fifo_kb=8; | |
92 | module_param(tx_fifo_kb, int, 0400); | |
93 | MODULE_PARM_DESC(tx_fifo_kb,"transmit FIFO size in KB (1<x<15)(default=8)"); | |
94 | ||
95 | MODULE_LICENSE("GPL"); | |
96 | ||
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 | ||
109 | ||
110 | /* store this information for the driver.. */ | |
111 | struct smc911x_local { | |
112 | /* | |
113 | * If I have to wait until the DMA is finished and ready to reload a | |
d5498bef | 114 | * packet, I will store the skbuff here. Then, the DMA will send it |
0a0c72c9 DM |
115 | * out and free it. |
116 | */ | |
117 | struct sk_buff *pending_tx_skb; | |
118 | ||
119 | /* | |
120 | * these are things that the kernel wants me to keep, so users | |
121 | * can find out semi-useless statistics of how well the card is | |
122 | * performing | |
123 | */ | |
124 | struct net_device_stats stats; | |
125 | ||
126 | /* version/revision of the SMC911x chip */ | |
127 | u16 version; | |
128 | u16 revision; | |
129 | ||
130 | /* FIFO sizes */ | |
131 | int tx_fifo_kb; | |
132 | int tx_fifo_size; | |
133 | int rx_fifo_size; | |
134 | int afc_cfg; | |
135 | ||
136 | /* Contains the current active receive/phy mode */ | |
137 | int ctl_rfduplx; | |
138 | int ctl_rspeed; | |
139 | ||
140 | u32 msg_enable; | |
141 | u32 phy_type; | |
142 | struct mii_if_info mii; | |
143 | ||
144 | /* work queue */ | |
145 | struct work_struct phy_configure; | |
146 | int work_pending; | |
147 | ||
148 | int tx_throttle; | |
149 | spinlock_t lock; | |
150 | ||
ef8142a5 AM |
151 | struct net_device *netdev; |
152 | ||
0a0c72c9 DM |
153 | #ifdef SMC_USE_DMA |
154 | /* DMA needs the physical address of the chip */ | |
155 | u_long physaddr; | |
156 | int rxdma; | |
157 | int txdma; | |
158 | int rxdma_active; | |
159 | int txdma_active; | |
160 | struct sk_buff *current_rx_skb; | |
161 | struct sk_buff *current_tx_skb; | |
162 | struct device *dev; | |
163 | #endif | |
164 | }; | |
165 | ||
166 | #if SMC_DEBUG > 0 | |
167 | #define DBG(n, args...) \ | |
168 | do { \ | |
169 | if (SMC_DEBUG & (n)) \ | |
170 | printk(args); \ | |
171 | } while (0) | |
172 | ||
173 | #define PRINTK(args...) printk(args) | |
174 | #else | |
175 | #define DBG(n, args...) do { } while (0) | |
176 | #define PRINTK(args...) printk(KERN_DEBUG args) | |
177 | #endif | |
178 | ||
179 | #if SMC_DEBUG_PKTS > 0 | |
180 | static void PRINT_PKT(u_char *buf, int length) | |
181 | { | |
182 | int i; | |
183 | int remainder; | |
184 | int lines; | |
185 | ||
186 | lines = length / 16; | |
187 | remainder = length % 16; | |
188 | ||
189 | for (i = 0; i < lines ; i ++) { | |
190 | int cur; | |
191 | for (cur = 0; cur < 8; cur++) { | |
192 | u_char a, b; | |
193 | a = *buf++; | |
194 | b = *buf++; | |
195 | printk("%02x%02x ", a, b); | |
196 | } | |
197 | printk("\n"); | |
198 | } | |
199 | for (i = 0; i < remainder/2 ; i++) { | |
200 | u_char a, b; | |
201 | a = *buf++; | |
202 | b = *buf++; | |
203 | printk("%02x%02x ", a, b); | |
204 | } | |
205 | printk("\n"); | |
206 | } | |
207 | #else | |
208 | #define PRINT_PKT(x...) do { } while (0) | |
209 | #endif | |
210 | ||
211 | ||
212 | /* this enables an interrupt in the interrupt mask register */ | |
213 | #define SMC_ENABLE_INT(x) do { \ | |
214 | unsigned int __mask; \ | |
215 | unsigned long __flags; \ | |
216 | spin_lock_irqsave(&lp->lock, __flags); \ | |
217 | __mask = SMC_GET_INT_EN(); \ | |
218 | __mask |= (x); \ | |
219 | SMC_SET_INT_EN(__mask); \ | |
220 | spin_unlock_irqrestore(&lp->lock, __flags); \ | |
221 | } while (0) | |
222 | ||
223 | /* this disables an interrupt from the interrupt mask register */ | |
224 | #define SMC_DISABLE_INT(x) do { \ | |
225 | unsigned int __mask; \ | |
226 | unsigned long __flags; \ | |
227 | spin_lock_irqsave(&lp->lock, __flags); \ | |
228 | __mask = SMC_GET_INT_EN(); \ | |
229 | __mask &= ~(x); \ | |
230 | SMC_SET_INT_EN(__mask); \ | |
231 | spin_unlock_irqrestore(&lp->lock, __flags); \ | |
232 | } while (0) | |
233 | ||
234 | /* | |
235 | * this does a soft reset on the device | |
236 | */ | |
237 | static void smc911x_reset(struct net_device *dev) | |
238 | { | |
239 | unsigned long ioaddr = dev->base_addr; | |
240 | struct smc911x_local *lp = netdev_priv(dev); | |
241 | unsigned int reg, timeout=0, resets=1; | |
242 | unsigned long flags; | |
243 | ||
244 | DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __FUNCTION__); | |
245 | ||
246 | /* Take out of PM setting first */ | |
247 | if ((SMC_GET_PMT_CTRL() & PMT_CTRL_READY_) == 0) { | |
248 | /* Write to the bytetest will take out of powerdown */ | |
d5498bef | 249 | SMC_SET_BYTE_TEST(0); |
0a0c72c9 DM |
250 | timeout=10; |
251 | do { | |
252 | udelay(10); | |
253 | reg = SMC_GET_PMT_CTRL() & PMT_CTRL_READY_; | |
254 | } while ( timeout-- && !reg); | |
255 | if (timeout == 0) { | |
256 | PRINTK("%s: smc911x_reset timeout waiting for PM restore\n", dev->name); | |
257 | return; | |
258 | } | |
259 | } | |
260 | ||
261 | /* Disable all interrupts */ | |
262 | spin_lock_irqsave(&lp->lock, flags); | |
263 | SMC_SET_INT_EN(0); | |
264 | spin_unlock_irqrestore(&lp->lock, flags); | |
265 | ||
266 | while (resets--) { | |
267 | SMC_SET_HW_CFG(HW_CFG_SRST_); | |
268 | timeout=10; | |
269 | do { | |
270 | udelay(10); | |
271 | reg = SMC_GET_HW_CFG(); | |
272 | /* If chip indicates reset timeout then try again */ | |
273 | if (reg & HW_CFG_SRST_TO_) { | |
274 | PRINTK("%s: chip reset timeout, retrying...\n", dev->name); | |
275 | resets++; | |
276 | break; | |
277 | } | |
278 | } while ( timeout-- && (reg & HW_CFG_SRST_)); | |
279 | } | |
280 | if (timeout == 0) { | |
281 | PRINTK("%s: smc911x_reset timeout waiting for reset\n", dev->name); | |
282 | return; | |
283 | } | |
284 | ||
285 | /* make sure EEPROM has finished loading before setting GPIO_CFG */ | |
286 | timeout=1000; | |
287 | while ( timeout-- && (SMC_GET_E2P_CMD() & E2P_CMD_EPC_BUSY_)) { | |
288 | udelay(10); | |
289 | } | |
290 | if (timeout == 0){ | |
291 | PRINTK("%s: smc911x_reset timeout waiting for EEPROM busy\n", dev->name); | |
292 | return; | |
293 | } | |
294 | ||
295 | /* Initialize interrupts */ | |
296 | SMC_SET_INT_EN(0); | |
297 | SMC_ACK_INT(-1); | |
298 | ||
299 | /* Reset the FIFO level and flow control settings */ | |
300 | SMC_SET_HW_CFG((lp->tx_fifo_kb & 0xF) << 16); | |
301 | //TODO: Figure out what appropriate pause time is | |
302 | SMC_SET_FLOW(FLOW_FCPT_ | FLOW_FCEN_); | |
303 | SMC_SET_AFC_CFG(lp->afc_cfg); | |
304 | ||
305 | ||
306 | /* Set to LED outputs */ | |
307 | SMC_SET_GPIO_CFG(0x70070000); | |
308 | ||
d5498bef | 309 | /* |
0a0c72c9 | 310 | * Deassert IRQ for 1*10us for edge type interrupts |
d5498bef | 311 | * and drive IRQ pin push-pull |
0a0c72c9 DM |
312 | */ |
313 | SMC_SET_IRQ_CFG( (1 << 24) | INT_CFG_IRQ_EN_ | INT_CFG_IRQ_TYPE_ ); | |
314 | ||
315 | /* clear anything saved */ | |
316 | if (lp->pending_tx_skb != NULL) { | |
317 | dev_kfree_skb (lp->pending_tx_skb); | |
318 | lp->pending_tx_skb = NULL; | |
319 | lp->stats.tx_errors++; | |
320 | lp->stats.tx_aborted_errors++; | |
321 | } | |
322 | } | |
323 | ||
324 | /* | |
325 | * Enable Interrupts, Receive, and Transmit | |
326 | */ | |
327 | static void smc911x_enable(struct net_device *dev) | |
328 | { | |
329 | unsigned long ioaddr = dev->base_addr; | |
330 | struct smc911x_local *lp = netdev_priv(dev); | |
331 | unsigned mask, cfg, cr; | |
332 | unsigned long flags; | |
333 | ||
334 | DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __FUNCTION__); | |
335 | ||
336 | SMC_SET_MAC_ADDR(dev->dev_addr); | |
337 | ||
338 | /* Enable TX */ | |
339 | cfg = SMC_GET_HW_CFG(); | |
340 | cfg &= HW_CFG_TX_FIF_SZ_ | 0xFFF; | |
341 | cfg |= HW_CFG_SF_; | |
342 | SMC_SET_HW_CFG(cfg); | |
343 | SMC_SET_FIFO_TDA(0xFF); | |
344 | /* Update TX stats on every 64 packets received or every 1 sec */ | |
345 | SMC_SET_FIFO_TSL(64); | |
346 | SMC_SET_GPT_CFG(GPT_CFG_TIMER_EN_ | 10000); | |
347 | ||
348 | spin_lock_irqsave(&lp->lock, flags); | |
349 | SMC_GET_MAC_CR(cr); | |
350 | cr |= MAC_CR_TXEN_ | MAC_CR_HBDIS_; | |
351 | SMC_SET_MAC_CR(cr); | |
352 | SMC_SET_TX_CFG(TX_CFG_TX_ON_); | |
353 | spin_unlock_irqrestore(&lp->lock, flags); | |
354 | ||
355 | /* Add 2 byte padding to start of packets */ | |
356 | SMC_SET_RX_CFG((2<<8) & RX_CFG_RXDOFF_); | |
357 | ||
358 | /* Turn on receiver and enable RX */ | |
359 | if (cr & MAC_CR_RXEN_) | |
360 | DBG(SMC_DEBUG_RX, "%s: Receiver already enabled\n", dev->name); | |
361 | ||
362 | spin_lock_irqsave(&lp->lock, flags); | |
363 | SMC_SET_MAC_CR( cr | MAC_CR_RXEN_ ); | |
364 | spin_unlock_irqrestore(&lp->lock, flags); | |
365 | ||
366 | /* Interrupt on every received packet */ | |
367 | SMC_SET_FIFO_RSA(0x01); | |
368 | SMC_SET_FIFO_RSL(0x00); | |
369 | ||
370 | /* now, enable interrupts */ | |
d5498bef JG |
371 | mask = INT_EN_TDFA_EN_ | INT_EN_TSFL_EN_ | INT_EN_RSFL_EN_ | |
372 | INT_EN_GPT_INT_EN_ | INT_EN_RXDFH_INT_EN_ | INT_EN_RXE_EN_ | | |
0a0c72c9 DM |
373 | INT_EN_PHY_INT_EN_; |
374 | if (IS_REV_A(lp->revision)) | |
375 | mask|=INT_EN_RDFL_EN_; | |
376 | else { | |
377 | mask|=INT_EN_RDFO_EN_; | |
378 | } | |
379 | SMC_ENABLE_INT(mask); | |
380 | } | |
381 | ||
382 | /* | |
383 | * this puts the device in an inactive state | |
384 | */ | |
385 | static void smc911x_shutdown(struct net_device *dev) | |
386 | { | |
387 | unsigned long ioaddr = dev->base_addr; | |
388 | struct smc911x_local *lp = netdev_priv(dev); | |
389 | unsigned cr; | |
390 | unsigned long flags; | |
391 | ||
392 | DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", CARDNAME, __FUNCTION__); | |
393 | ||
394 | /* Disable IRQ's */ | |
395 | SMC_SET_INT_EN(0); | |
396 | ||
397 | /* Turn of Rx and TX */ | |
398 | spin_lock_irqsave(&lp->lock, flags); | |
399 | SMC_GET_MAC_CR(cr); | |
400 | cr &= ~(MAC_CR_TXEN_ | MAC_CR_RXEN_ | MAC_CR_HBDIS_); | |
401 | SMC_SET_MAC_CR(cr); | |
402 | SMC_SET_TX_CFG(TX_CFG_STOP_TX_); | |
403 | spin_unlock_irqrestore(&lp->lock, flags); | |
404 | } | |
405 | ||
406 | static inline void smc911x_drop_pkt(struct net_device *dev) | |
d5498bef | 407 | { |
0a0c72c9 DM |
408 | unsigned long ioaddr = dev->base_addr; |
409 | unsigned int fifo_count, timeout, reg; | |
410 | ||
411 | DBG(SMC_DEBUG_FUNC | SMC_DEBUG_RX, "%s: --> %s\n", CARDNAME, __FUNCTION__); | |
d5498bef | 412 | fifo_count = SMC_GET_RX_FIFO_INF() & 0xFFFF; |
0a0c72c9 DM |
413 | if (fifo_count <= 4) { |
414 | /* Manually dump the packet data */ | |
415 | while (fifo_count--) | |
416 | SMC_GET_RX_FIFO(); | |
417 | } else { | |
418 | /* Fast forward through the bad packet */ | |
419 | SMC_SET_RX_DP_CTRL(RX_DP_CTRL_FFWD_BUSY_); | |
420 | timeout=50; | |
421 | do { | |
422 | udelay(10); | |
423 | reg = SMC_GET_RX_DP_CTRL() & RX_DP_CTRL_FFWD_BUSY_; | |
424 | } while ( timeout-- && reg); | |
425 | if (timeout == 0) { | |
426 | PRINTK("%s: timeout waiting for RX fast forward\n", dev->name); | |
427 | } | |
428 | } | |
429 | } | |
430 | ||
431 | /* | |
432 | * This is the procedure to handle the receipt of a packet. | |
433 | * It should be called after checking for packet presence in | |
d5498bef | 434 | * the RX status FIFO. It must be called with the spin lock |
0a0c72c9 DM |
435 | * already held. |
436 | */ | |
437 | static inline void smc911x_rcv(struct net_device *dev) | |
438 | { | |
439 | struct smc911x_local *lp = netdev_priv(dev); | |
440 | unsigned long ioaddr = dev->base_addr; | |
441 | unsigned int pkt_len, status; | |
442 | struct sk_buff *skb; | |
443 | unsigned char *data; | |
444 | ||
d5498bef | 445 | DBG(SMC_DEBUG_FUNC | SMC_DEBUG_RX, "%s: --> %s\n", |
0a0c72c9 DM |
446 | dev->name, __FUNCTION__); |
447 | status = SMC_GET_RX_STS_FIFO(); | |
d5498bef | 448 | DBG(SMC_DEBUG_RX, "%s: Rx pkt len %d status 0x%08x \n", |
0a0c72c9 DM |
449 | dev->name, (status & 0x3fff0000) >> 16, status & 0xc000ffff); |
450 | pkt_len = (status & RX_STS_PKT_LEN_) >> 16; | |
d5498bef | 451 | if (status & RX_STS_ES_) { |
0a0c72c9 DM |
452 | /* Deal with a bad packet */ |
453 | lp->stats.rx_errors++; | |
d5498bef | 454 | if (status & RX_STS_CRC_ERR_) |
0a0c72c9 DM |
455 | lp->stats.rx_crc_errors++; |
456 | else { | |
457 | if (status & RX_STS_LEN_ERR_) | |
458 | lp->stats.rx_length_errors++; | |
d5498bef | 459 | if (status & RX_STS_MCAST_) |
0a0c72c9 DM |
460 | lp->stats.multicast++; |
461 | } | |
462 | /* Remove the bad packet data from the RX FIFO */ | |
463 | smc911x_drop_pkt(dev); | |
464 | } else { | |
465 | /* Receive a valid packet */ | |
466 | /* Alloc a buffer with extra room for DMA alignment */ | |
467 | skb=dev_alloc_skb(pkt_len+32); | |
468 | if (unlikely(skb == NULL)) { | |
469 | PRINTK( "%s: Low memory, rcvd packet dropped.\n", | |
470 | dev->name); | |
471 | lp->stats.rx_dropped++; | |
472 | smc911x_drop_pkt(dev); | |
473 | return; | |
474 | } | |
d5498bef | 475 | /* Align IP header to 32 bits |
0a0c72c9 | 476 | * Note that the device is configured to add a 2 |
d5498bef | 477 | * byte padding to the packet start, so we really |
0a0c72c9 DM |
478 | * want to write to the orignal data pointer */ |
479 | data = skb->data; | |
480 | skb_reserve(skb, 2); | |
481 | skb_put(skb,pkt_len-4); | |
482 | #ifdef SMC_USE_DMA | |
483 | { | |
484 | unsigned int fifo; | |
485 | /* Lower the FIFO threshold if possible */ | |
486 | fifo = SMC_GET_FIFO_INT(); | |
487 | if (fifo & 0xFF) fifo--; | |
488 | DBG(SMC_DEBUG_RX, "%s: Setting RX stat FIFO threshold to %d\n", | |
489 | dev->name, fifo & 0xff); | |
490 | SMC_SET_FIFO_INT(fifo); | |
491 | /* Setup RX DMA */ | |
492 | SMC_SET_RX_CFG(RX_CFG_RX_END_ALGN16_ | ((2<<8) & RX_CFG_RXDOFF_)); | |
493 | lp->rxdma_active = 1; | |
494 | lp->current_rx_skb = skb; | |
495 | SMC_PULL_DATA(data, (pkt_len+2+15) & ~15); | |
496 | /* Packet processing deferred to DMA RX interrupt */ | |
497 | } | |
498 | #else | |
499 | SMC_SET_RX_CFG(RX_CFG_RX_END_ALGN4_ | ((2<<8) & RX_CFG_RXDOFF_)); | |
500 | SMC_PULL_DATA(data, pkt_len+2+3); | |
501 | ||
502 | DBG(SMC_DEBUG_PKTS, "%s: Received packet\n", dev->name,); | |
503 | PRINT_PKT(data, ((pkt_len - 4) <= 64) ? pkt_len - 4 : 64); | |
504 | dev->last_rx = jiffies; | |
505 | skb->dev = dev; | |
506 | skb->protocol = eth_type_trans(skb, dev); | |
507 | netif_rx(skb); | |
508 | lp->stats.rx_packets++; | |
509 | lp->stats.rx_bytes += pkt_len-4; | |
510 | #endif | |
511 | } | |
512 | } | |
513 | ||
514 | /* | |
515 | * This is called to actually send a packet to the chip. | |
516 | */ | |
517 | static void smc911x_hardware_send_pkt(struct net_device *dev) | |
518 | { | |
519 | struct smc911x_local *lp = netdev_priv(dev); | |
520 | unsigned long ioaddr = dev->base_addr; | |
521 | struct sk_buff *skb; | |
522 | unsigned int cmdA, cmdB, len; | |
523 | unsigned char *buf; | |
524 | unsigned long flags; | |
525 | ||
526 | DBG(SMC_DEBUG_FUNC | SMC_DEBUG_TX, "%s: --> %s\n", dev->name, __FUNCTION__); | |
527 | BUG_ON(lp->pending_tx_skb == NULL); | |
528 | ||
529 | skb = lp->pending_tx_skb; | |
530 | lp->pending_tx_skb = NULL; | |
531 | ||
d5498bef JG |
532 | /* cmdA {25:24] data alignment [20:16] start offset [10:0] buffer length */ |
533 | /* cmdB {31:16] pkt tag [10:0] length */ | |
0a0c72c9 DM |
534 | #ifdef SMC_USE_DMA |
535 | /* 16 byte buffer alignment mode */ | |
536 | buf = (char*)((u32)(skb->data) & ~0xF); | |
d5498bef | 537 | len = (skb->len + 0xF + ((u32)skb->data & 0xF)) & ~0xF; |
0a0c72c9 DM |
538 | cmdA = (1<<24) | (((u32)skb->data & 0xF)<<16) | |
539 | TX_CMD_A_INT_FIRST_SEG_ | TX_CMD_A_INT_LAST_SEG_ | | |
540 | skb->len; | |
541 | #else | |
542 | buf = (char*)((u32)skb->data & ~0x3); | |
d5498bef | 543 | len = (skb->len + 3 + ((u32)skb->data & 3)) & ~0x3; |
0a0c72c9 DM |
544 | cmdA = (((u32)skb->data & 0x3) << 16) | |
545 | TX_CMD_A_INT_FIRST_SEG_ | TX_CMD_A_INT_LAST_SEG_ | | |
546 | skb->len; | |
547 | #endif | |
d5498bef | 548 | /* tag is packet length so we can use this in stats update later */ |
0a0c72c9 | 549 | cmdB = (skb->len << 16) | (skb->len & 0x7FF); |
d5498bef | 550 | |
0a0c72c9 DM |
551 | DBG(SMC_DEBUG_TX, "%s: TX PKT LENGTH 0x%04x (%d) BUF 0x%p CMDA 0x%08x CMDB 0x%08x\n", |
552 | dev->name, len, len, buf, cmdA, cmdB); | |
553 | SMC_SET_TX_FIFO(cmdA); | |
554 | SMC_SET_TX_FIFO(cmdB); | |
555 | ||
556 | DBG(SMC_DEBUG_PKTS, "%s: Transmitted packet\n", dev->name); | |
557 | PRINT_PKT(buf, len <= 64 ? len : 64); | |
558 | ||
559 | /* Send pkt via PIO or DMA */ | |
560 | #ifdef SMC_USE_DMA | |
561 | lp->current_tx_skb = skb; | |
562 | SMC_PUSH_DATA(buf, len); | |
563 | /* DMA complete IRQ will free buffer and set jiffies */ | |
564 | #else | |
565 | SMC_PUSH_DATA(buf, len); | |
566 | dev->trans_start = jiffies; | |
567 | dev_kfree_skb(skb); | |
568 | #endif | |
569 | spin_lock_irqsave(&lp->lock, flags); | |
570 | if (!lp->tx_throttle) { | |
571 | netif_wake_queue(dev); | |
572 | } | |
573 | spin_unlock_irqrestore(&lp->lock, flags); | |
574 | SMC_ENABLE_INT(INT_EN_TDFA_EN_ | INT_EN_TSFL_EN_); | |
575 | } | |
576 | ||
577 | /* | |
578 | * Since I am not sure if I will have enough room in the chip's ram | |
579 | * to store the packet, I call this routine which either sends it | |
580 | * now, or set the card to generates an interrupt when ready | |
581 | * for the packet. | |
582 | */ | |
583 | static int smc911x_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
584 | { | |
585 | struct smc911x_local *lp = netdev_priv(dev); | |
586 | unsigned long ioaddr = dev->base_addr; | |
587 | unsigned int free; | |
588 | unsigned long flags; | |
589 | ||
d5498bef | 590 | DBG(SMC_DEBUG_FUNC | SMC_DEBUG_TX, "%s: --> %s\n", |
0a0c72c9 DM |
591 | dev->name, __FUNCTION__); |
592 | ||
593 | BUG_ON(lp->pending_tx_skb != NULL); | |
594 | ||
595 | free = SMC_GET_TX_FIFO_INF() & TX_FIFO_INF_TDFREE_; | |
596 | DBG(SMC_DEBUG_TX, "%s: TX free space %d\n", dev->name, free); | |
597 | ||
598 | /* Turn off the flow when running out of space in FIFO */ | |
599 | if (free <= SMC911X_TX_FIFO_LOW_THRESHOLD) { | |
d5498bef | 600 | DBG(SMC_DEBUG_TX, "%s: Disabling data flow due to low FIFO space (%d)\n", |
0a0c72c9 DM |
601 | dev->name, free); |
602 | spin_lock_irqsave(&lp->lock, flags); | |
603 | /* Reenable when at least 1 packet of size MTU present */ | |
604 | SMC_SET_FIFO_TDA((SMC911X_TX_FIFO_LOW_THRESHOLD)/64); | |
605 | lp->tx_throttle = 1; | |
606 | netif_stop_queue(dev); | |
607 | spin_unlock_irqrestore(&lp->lock, flags); | |
608 | } | |
609 | ||
d5498bef | 610 | /* Drop packets when we run out of space in TX FIFO |
0a0c72c9 | 611 | * Account for overhead required for: |
d5498bef JG |
612 | * |
613 | * Tx command words 8 bytes | |
0a0c72c9 DM |
614 | * Start offset 15 bytes |
615 | * End padding 15 bytes | |
d5498bef | 616 | */ |
0a0c72c9 | 617 | if (unlikely(free < (skb->len + 8 + 15 + 15))) { |
d5498bef | 618 | printk("%s: No Tx free space %d < %d\n", |
0a0c72c9 DM |
619 | dev->name, free, skb->len); |
620 | lp->pending_tx_skb = NULL; | |
621 | lp->stats.tx_errors++; | |
622 | lp->stats.tx_dropped++; | |
623 | dev_kfree_skb(skb); | |
624 | return 0; | |
625 | } | |
d5498bef | 626 | |
0a0c72c9 DM |
627 | #ifdef SMC_USE_DMA |
628 | { | |
629 | /* If the DMA is already running then defer this packet Tx until | |
d5498bef | 630 | * the DMA IRQ starts it |
0a0c72c9 DM |
631 | */ |
632 | spin_lock_irqsave(&lp->lock, flags); | |
633 | if (lp->txdma_active) { | |
634 | DBG(SMC_DEBUG_TX | SMC_DEBUG_DMA, "%s: Tx DMA running, deferring packet\n", dev->name); | |
635 | lp->pending_tx_skb = skb; | |
636 | netif_stop_queue(dev); | |
637 | spin_unlock_irqrestore(&lp->lock, flags); | |
638 | return 0; | |
639 | } else { | |
640 | DBG(SMC_DEBUG_TX | SMC_DEBUG_DMA, "%s: Activating Tx DMA\n", dev->name); | |
641 | lp->txdma_active = 1; | |
642 | } | |
643 | spin_unlock_irqrestore(&lp->lock, flags); | |
644 | } | |
645 | #endif | |
646 | lp->pending_tx_skb = skb; | |
647 | smc911x_hardware_send_pkt(dev); | |
648 | ||
649 | return 0; | |
650 | } | |
651 | ||
652 | /* | |
653 | * This handles a TX status interrupt, which is only called when: | |
654 | * - a TX error occurred, or | |
655 | * - TX of a packet completed. | |
656 | */ | |
657 | static void smc911x_tx(struct net_device *dev) | |
658 | { | |
659 | unsigned long ioaddr = dev->base_addr; | |
660 | struct smc911x_local *lp = netdev_priv(dev); | |
661 | unsigned int tx_status; | |
662 | ||
d5498bef | 663 | DBG(SMC_DEBUG_FUNC | SMC_DEBUG_TX, "%s: --> %s\n", |
0a0c72c9 DM |
664 | dev->name, __FUNCTION__); |
665 | ||
666 | /* Collect the TX status */ | |
667 | while (((SMC_GET_TX_FIFO_INF() & TX_FIFO_INF_TSUSED_) >> 16) != 0) { | |
d5498bef JG |
668 | DBG(SMC_DEBUG_TX, "%s: Tx stat FIFO used 0x%04x\n", |
669 | dev->name, | |
0a0c72c9 DM |
670 | (SMC_GET_TX_FIFO_INF() & TX_FIFO_INF_TSUSED_) >> 16); |
671 | tx_status = SMC_GET_TX_STS_FIFO(); | |
672 | lp->stats.tx_packets++; | |
673 | lp->stats.tx_bytes+=tx_status>>16; | |
d5498bef JG |
674 | DBG(SMC_DEBUG_TX, "%s: Tx FIFO tag 0x%04x status 0x%04x\n", |
675 | dev->name, (tx_status & 0xffff0000) >> 16, | |
0a0c72c9 | 676 | tx_status & 0x0000ffff); |
d5498bef | 677 | /* count Tx errors, but ignore lost carrier errors when in |
0a0c72c9 | 678 | * full-duplex mode */ |
d5498bef | 679 | if ((tx_status & TX_STS_ES_) && !(lp->ctl_rfduplx && |
0a0c72c9 DM |
680 | !(tx_status & 0x00000306))) { |
681 | lp->stats.tx_errors++; | |
682 | } | |
683 | if (tx_status & TX_STS_MANY_COLL_) { | |
684 | lp->stats.collisions+=16; | |
685 | lp->stats.tx_aborted_errors++; | |
686 | } else { | |
687 | lp->stats.collisions+=(tx_status & TX_STS_COLL_CNT_) >> 3; | |
688 | } | |
689 | /* carrier error only has meaning for half-duplex communication */ | |
d5498bef | 690 | if ((tx_status & (TX_STS_LOC_ | TX_STS_NO_CARR_)) && |
0a0c72c9 DM |
691 | !lp->ctl_rfduplx) { |
692 | lp->stats.tx_carrier_errors++; | |
d5498bef | 693 | } |
0a0c72c9 DM |
694 | if (tx_status & TX_STS_LATE_COLL_) { |
695 | lp->stats.collisions++; | |
696 | lp->stats.tx_aborted_errors++; | |
697 | } | |
698 | } | |
699 | } | |
700 | ||
701 | ||
702 | /*---PHY CONTROL AND CONFIGURATION-----------------------------------------*/ | |
703 | /* | |
704 | * Reads a register from the MII Management serial interface | |
705 | */ | |
706 | ||
707 | static int smc911x_phy_read(struct net_device *dev, int phyaddr, int phyreg) | |
708 | { | |
709 | unsigned long ioaddr = dev->base_addr; | |
710 | unsigned int phydata; | |
711 | ||
712 | SMC_GET_MII(phyreg, phyaddr, phydata); | |
713 | ||
714 | DBG(SMC_DEBUG_MISC, "%s: phyaddr=0x%x, phyreg=0x%02x, phydata=0x%04x\n", | |
715 | __FUNCTION__, phyaddr, phyreg, phydata); | |
716 | return phydata; | |
717 | } | |
718 | ||
719 | ||
720 | /* | |
721 | * Writes a register to the MII Management serial interface | |
722 | */ | |
723 | static void smc911x_phy_write(struct net_device *dev, int phyaddr, int phyreg, | |
724 | int phydata) | |
725 | { | |
726 | unsigned long ioaddr = dev->base_addr; | |
727 | ||
728 | DBG(SMC_DEBUG_MISC, "%s: phyaddr=0x%x, phyreg=0x%x, phydata=0x%x\n", | |
729 | __FUNCTION__, phyaddr, phyreg, phydata); | |
730 | ||
731 | SMC_SET_MII(phyreg, phyaddr, phydata); | |
732 | } | |
733 | ||
734 | /* | |
735 | * Finds and reports the PHY address (115 and 117 have external | |
736 | * PHY interface 118 has internal only | |
737 | */ | |
738 | static void smc911x_phy_detect(struct net_device *dev) | |
739 | { | |
740 | unsigned long ioaddr = dev->base_addr; | |
741 | struct smc911x_local *lp = netdev_priv(dev); | |
742 | int phyaddr; | |
743 | unsigned int cfg, id1, id2; | |
744 | ||
745 | DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __FUNCTION__); | |
746 | ||
747 | lp->phy_type = 0; | |
748 | ||
749 | /* | |
750 | * Scan all 32 PHY addresses if necessary, starting at | |
751 | * PHY#1 to PHY#31, and then PHY#0 last. | |
752 | */ | |
753 | switch(lp->version) { | |
754 | case 0x115: | |
755 | case 0x117: | |
d5498bef | 756 | cfg = SMC_GET_HW_CFG(); |
0a0c72c9 DM |
757 | if (cfg & HW_CFG_EXT_PHY_DET_) { |
758 | cfg &= ~HW_CFG_PHY_CLK_SEL_; | |
759 | cfg |= HW_CFG_PHY_CLK_SEL_CLK_DIS_; | |
760 | SMC_SET_HW_CFG(cfg); | |
761 | udelay(10); /* Wait for clocks to stop */ | |
762 | ||
763 | cfg |= HW_CFG_EXT_PHY_EN_; | |
764 | SMC_SET_HW_CFG(cfg); | |
765 | udelay(10); /* Wait for clocks to stop */ | |
766 | ||
767 | cfg &= ~HW_CFG_PHY_CLK_SEL_; | |
768 | cfg |= HW_CFG_PHY_CLK_SEL_EXT_PHY_; | |
769 | SMC_SET_HW_CFG(cfg); | |
770 | udelay(10); /* Wait for clocks to stop */ | |
771 | ||
772 | cfg |= HW_CFG_SMI_SEL_; | |
773 | SMC_SET_HW_CFG(cfg); | |
774 | ||
775 | for (phyaddr = 1; phyaddr < 32; ++phyaddr) { | |
776 | ||
777 | /* Read the PHY identifiers */ | |
778 | SMC_GET_PHY_ID1(phyaddr & 31, id1); | |
779 | SMC_GET_PHY_ID2(phyaddr & 31, id2); | |
780 | ||
781 | /* Make sure it is a valid identifier */ | |
d5498bef JG |
782 | if (id1 != 0x0000 && id1 != 0xffff && |
783 | id1 != 0x8000 && id2 != 0x0000 && | |
0a0c72c9 DM |
784 | id2 != 0xffff && id2 != 0x8000) { |
785 | /* Save the PHY's address */ | |
786 | lp->mii.phy_id = phyaddr & 31; | |
787 | lp->phy_type = id1 << 16 | id2; | |
788 | break; | |
789 | } | |
790 | } | |
791 | } | |
792 | default: | |
793 | /* Internal media only */ | |
794 | SMC_GET_PHY_ID1(1, id1); | |
795 | SMC_GET_PHY_ID2(1, id2); | |
796 | /* Save the PHY's address */ | |
797 | lp->mii.phy_id = 1; | |
798 | lp->phy_type = id1 << 16 | id2; | |
799 | } | |
800 | ||
801 | DBG(SMC_DEBUG_MISC, "%s: phy_id1=0x%x, phy_id2=0x%x phyaddr=0x%d\n", | |
802 | dev->name, id1, id2, lp->mii.phy_id); | |
803 | } | |
804 | ||
805 | /* | |
806 | * Sets the PHY to a configuration as determined by the user. | |
807 | * Called with spin_lock held. | |
808 | */ | |
809 | static int smc911x_phy_fixed(struct net_device *dev) | |
810 | { | |
811 | struct smc911x_local *lp = netdev_priv(dev); | |
812 | unsigned long ioaddr = dev->base_addr; | |
813 | int phyaddr = lp->mii.phy_id; | |
814 | int bmcr; | |
815 | ||
816 | DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __FUNCTION__); | |
817 | ||
818 | /* Enter Link Disable state */ | |
819 | SMC_GET_PHY_BMCR(phyaddr, bmcr); | |
820 | bmcr |= BMCR_PDOWN; | |
821 | SMC_SET_PHY_BMCR(phyaddr, bmcr); | |
822 | ||
823 | /* | |
824 | * Set our fixed capabilities | |
825 | * Disable auto-negotiation | |
826 | */ | |
827 | bmcr &= ~BMCR_ANENABLE; | |
828 | if (lp->ctl_rfduplx) | |
829 | bmcr |= BMCR_FULLDPLX; | |
830 | ||
831 | if (lp->ctl_rspeed == 100) | |
832 | bmcr |= BMCR_SPEED100; | |
833 | ||
834 | /* Write our capabilities to the phy control register */ | |
835 | SMC_SET_PHY_BMCR(phyaddr, bmcr); | |
836 | ||
837 | /* Re-Configure the Receive/Phy Control register */ | |
838 | bmcr &= ~BMCR_PDOWN; | |
839 | SMC_SET_PHY_BMCR(phyaddr, bmcr); | |
840 | ||
841 | return 1; | |
842 | } | |
843 | ||
844 | /* | |
845 | * smc911x_phy_reset - reset the phy | |
846 | * @dev: net device | |
847 | * @phy: phy address | |
848 | * | |
849 | * Issue a software reset for the specified PHY and | |
850 | * wait up to 100ms for the reset to complete. We should | |
851 | * not access the PHY for 50ms after issuing the reset. | |
852 | * | |
853 | * The time to wait appears to be dependent on the PHY. | |
854 | * | |
855 | */ | |
856 | static int smc911x_phy_reset(struct net_device *dev, int phy) | |
857 | { | |
858 | struct smc911x_local *lp = netdev_priv(dev); | |
859 | unsigned long ioaddr = dev->base_addr; | |
860 | int timeout; | |
861 | unsigned long flags; | |
862 | unsigned int reg; | |
863 | ||
864 | DBG(SMC_DEBUG_FUNC, "%s: --> %s()\n", dev->name, __FUNCTION__); | |
865 | ||
866 | spin_lock_irqsave(&lp->lock, flags); | |
867 | reg = SMC_GET_PMT_CTRL(); | |
868 | reg &= ~0xfffff030; | |
869 | reg |= PMT_CTRL_PHY_RST_; | |
870 | SMC_SET_PMT_CTRL(reg); | |
871 | spin_unlock_irqrestore(&lp->lock, flags); | |
872 | for (timeout = 2; timeout; timeout--) { | |
873 | msleep(50); | |
874 | spin_lock_irqsave(&lp->lock, flags); | |
875 | reg = SMC_GET_PMT_CTRL(); | |
876 | spin_unlock_irqrestore(&lp->lock, flags); | |
877 | if (!(reg & PMT_CTRL_PHY_RST_)) { | |
d5498bef | 878 | /* extra delay required because the phy may |
0a0c72c9 | 879 | * not be completed with its reset |
d5498bef | 880 | * when PHY_BCR_RESET_ is cleared. 256us |
0a0c72c9 DM |
881 | * should suffice, but use 500us to be safe |
882 | */ | |
883 | udelay(500); | |
884 | break; | |
885 | } | |
886 | } | |
887 | ||
888 | return reg & PMT_CTRL_PHY_RST_; | |
889 | } | |
890 | ||
891 | /* | |
892 | * smc911x_phy_powerdown - powerdown phy | |
893 | * @dev: net device | |
894 | * @phy: phy address | |
895 | * | |
896 | * Power down the specified PHY | |
897 | */ | |
898 | static void smc911x_phy_powerdown(struct net_device *dev, int phy) | |
899 | { | |
900 | unsigned long ioaddr = dev->base_addr; | |
901 | unsigned int bmcr; | |
902 | ||
903 | /* Enter Link Disable state */ | |
904 | SMC_GET_PHY_BMCR(phy, bmcr); | |
905 | bmcr |= BMCR_PDOWN; | |
906 | SMC_SET_PHY_BMCR(phy, bmcr); | |
907 | } | |
908 | ||
909 | /* | |
910 | * smc911x_phy_check_media - check the media status and adjust BMCR | |
911 | * @dev: net device | |
912 | * @init: set true for initialisation | |
913 | * | |
914 | * Select duplex mode depending on negotiation state. This | |
915 | * also updates our carrier state. | |
916 | */ | |
917 | static void smc911x_phy_check_media(struct net_device *dev, int init) | |
918 | { | |
919 | struct smc911x_local *lp = netdev_priv(dev); | |
920 | unsigned long ioaddr = dev->base_addr; | |
921 | int phyaddr = lp->mii.phy_id; | |
922 | unsigned int bmcr, cr; | |
923 | ||
924 | DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __FUNCTION__); | |
925 | ||
926 | if (mii_check_media(&lp->mii, netif_msg_link(lp), init)) { | |
927 | /* duplex state has changed */ | |
928 | SMC_GET_PHY_BMCR(phyaddr, bmcr); | |
929 | SMC_GET_MAC_CR(cr); | |
930 | if (lp->mii.full_duplex) { | |
931 | DBG(SMC_DEBUG_MISC, "%s: Configuring for full-duplex mode\n", dev->name); | |
932 | bmcr |= BMCR_FULLDPLX; | |
933 | cr |= MAC_CR_RCVOWN_; | |
934 | } else { | |
935 | DBG(SMC_DEBUG_MISC, "%s: Configuring for half-duplex mode\n", dev->name); | |
936 | bmcr &= ~BMCR_FULLDPLX; | |
937 | cr &= ~MAC_CR_RCVOWN_; | |
938 | } | |
939 | SMC_SET_PHY_BMCR(phyaddr, bmcr); | |
940 | SMC_SET_MAC_CR(cr); | |
941 | } | |
942 | } | |
943 | ||
944 | /* | |
945 | * Configures the specified PHY through the MII management interface | |
946 | * using Autonegotiation. | |
947 | * Calls smc911x_phy_fixed() if the user has requested a certain config. | |
948 | * If RPC ANEG bit is set, the media selection is dependent purely on | |
949 | * the selection by the MII (either in the MII BMCR reg or the result | |
950 | * of autonegotiation.) If the RPC ANEG bit is cleared, the selection | |
951 | * is controlled by the RPC SPEED and RPC DPLX bits. | |
952 | */ | |
ef8142a5 | 953 | static void smc911x_phy_configure(struct work_struct *work) |
0a0c72c9 | 954 | { |
ef8142a5 AM |
955 | struct smc911x_local *lp = container_of(work, struct smc911x_local, |
956 | phy_configure); | |
957 | struct net_device *dev = lp->netdev; | |
0a0c72c9 DM |
958 | unsigned long ioaddr = dev->base_addr; |
959 | int phyaddr = lp->mii.phy_id; | |
960 | int my_phy_caps; /* My PHY capabilities */ | |
961 | int my_ad_caps; /* My Advertised capabilities */ | |
962 | int status; | |
963 | unsigned long flags; | |
964 | ||
965 | DBG(SMC_DEBUG_FUNC, "%s: --> %s()\n", dev->name, __FUNCTION__); | |
966 | ||
967 | /* | |
968 | * We should not be called if phy_type is zero. | |
969 | */ | |
970 | if (lp->phy_type == 0) | |
971 | goto smc911x_phy_configure_exit; | |
972 | ||
973 | if (smc911x_phy_reset(dev, phyaddr)) { | |
974 | printk("%s: PHY reset timed out\n", dev->name); | |
975 | goto smc911x_phy_configure_exit; | |
976 | } | |
977 | spin_lock_irqsave(&lp->lock, flags); | |
978 | ||
979 | /* | |
980 | * Enable PHY Interrupts (for register 18) | |
981 | * Interrupts listed here are enabled | |
982 | */ | |
983 | SMC_SET_PHY_INT_MASK(phyaddr, PHY_INT_MASK_ENERGY_ON_ | | |
984 | PHY_INT_MASK_ANEG_COMP_ | PHY_INT_MASK_REMOTE_FAULT_ | | |
985 | PHY_INT_MASK_LINK_DOWN_); | |
986 | ||
987 | /* If the user requested no auto neg, then go set his request */ | |
988 | if (lp->mii.force_media) { | |
989 | smc911x_phy_fixed(dev); | |
990 | goto smc911x_phy_configure_exit; | |
991 | } | |
992 | ||
993 | /* Copy our capabilities from MII_BMSR to MII_ADVERTISE */ | |
994 | SMC_GET_PHY_BMSR(phyaddr, my_phy_caps); | |
995 | if (!(my_phy_caps & BMSR_ANEGCAPABLE)) { | |
996 | printk(KERN_INFO "Auto negotiation NOT supported\n"); | |
997 | smc911x_phy_fixed(dev); | |
998 | goto smc911x_phy_configure_exit; | |
999 | } | |
1000 | ||
1001 | /* CSMA capable w/ both pauses */ | |
1002 | my_ad_caps = ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM; | |
1003 | ||
1004 | if (my_phy_caps & BMSR_100BASE4) | |
1005 | my_ad_caps |= ADVERTISE_100BASE4; | |
1006 | if (my_phy_caps & BMSR_100FULL) | |
1007 | my_ad_caps |= ADVERTISE_100FULL; | |
1008 | if (my_phy_caps & BMSR_100HALF) | |
1009 | my_ad_caps |= ADVERTISE_100HALF; | |
1010 | if (my_phy_caps & BMSR_10FULL) | |
1011 | my_ad_caps |= ADVERTISE_10FULL; | |
1012 | if (my_phy_caps & BMSR_10HALF) | |
1013 | my_ad_caps |= ADVERTISE_10HALF; | |
1014 | ||
1015 | /* Disable capabilities not selected by our user */ | |
1016 | if (lp->ctl_rspeed != 100) | |
1017 | my_ad_caps &= ~(ADVERTISE_100BASE4|ADVERTISE_100FULL|ADVERTISE_100HALF); | |
1018 | ||
1019 | if (!lp->ctl_rfduplx) | |
1020 | my_ad_caps &= ~(ADVERTISE_100FULL|ADVERTISE_10FULL); | |
1021 | ||
1022 | /* Update our Auto-Neg Advertisement Register */ | |
1023 | SMC_SET_PHY_MII_ADV(phyaddr, my_ad_caps); | |
1024 | lp->mii.advertising = my_ad_caps; | |
1025 | ||
1026 | /* | |
1027 | * Read the register back. Without this, it appears that when | |
1028 | * auto-negotiation is restarted, sometimes it isn't ready and | |
1029 | * the link does not come up. | |
1030 | */ | |
1031 | udelay(10); | |
1032 | SMC_GET_PHY_MII_ADV(phyaddr, status); | |
1033 | ||
1034 | DBG(SMC_DEBUG_MISC, "%s: phy caps=0x%04x\n", dev->name, my_phy_caps); | |
1035 | DBG(SMC_DEBUG_MISC, "%s: phy advertised caps=0x%04x\n", dev->name, my_ad_caps); | |
1036 | ||
1037 | /* Restart auto-negotiation process in order to advertise my caps */ | |
1038 | SMC_SET_PHY_BMCR(phyaddr, BMCR_ANENABLE | BMCR_ANRESTART); | |
1039 | ||
1040 | smc911x_phy_check_media(dev, 1); | |
1041 | ||
1042 | smc911x_phy_configure_exit: | |
1043 | spin_unlock_irqrestore(&lp->lock, flags); | |
1044 | lp->work_pending = 0; | |
1045 | } | |
1046 | ||
1047 | /* | |
1048 | * smc911x_phy_interrupt | |
1049 | * | |
1050 | * Purpose: Handle interrupts relating to PHY register 18. This is | |
1051 | * called from the "hard" interrupt handler under our private spinlock. | |
1052 | */ | |
1053 | static void smc911x_phy_interrupt(struct net_device *dev) | |
1054 | { | |
1055 | struct smc911x_local *lp = netdev_priv(dev); | |
1056 | unsigned long ioaddr = dev->base_addr; | |
1057 | int phyaddr = lp->mii.phy_id; | |
1058 | int status; | |
1059 | ||
1060 | DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __FUNCTION__); | |
1061 | ||
1062 | if (lp->phy_type == 0) | |
1063 | return; | |
1064 | ||
1065 | smc911x_phy_check_media(dev, 0); | |
1066 | /* read to clear status bits */ | |
1067 | SMC_GET_PHY_INT_SRC(phyaddr,status); | |
d5498bef | 1068 | DBG(SMC_DEBUG_MISC, "%s: PHY interrupt status 0x%04x\n", |
0a0c72c9 | 1069 | dev->name, status & 0xffff); |
d5498bef | 1070 | DBG(SMC_DEBUG_MISC, "%s: AFC_CFG 0x%08x\n", |
0a0c72c9 DM |
1071 | dev->name, SMC_GET_AFC_CFG()); |
1072 | } | |
1073 | ||
1074 | /*--- END PHY CONTROL AND CONFIGURATION-------------------------------------*/ | |
1075 | ||
1076 | /* | |
1077 | * This is the main routine of the driver, to handle the device when | |
1078 | * it needs some attention. | |
1079 | */ | |
7d12e780 | 1080 | static irqreturn_t smc911x_interrupt(int irq, void *dev_id) |
0a0c72c9 DM |
1081 | { |
1082 | struct net_device *dev = dev_id; | |
1083 | unsigned long ioaddr = dev->base_addr; | |
1084 | struct smc911x_local *lp = netdev_priv(dev); | |
1085 | unsigned int status, mask, timeout; | |
1086 | unsigned int rx_overrun=0, cr, pkts; | |
1087 | unsigned long flags; | |
1088 | ||
1089 | DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __FUNCTION__); | |
1090 | ||
1091 | spin_lock_irqsave(&lp->lock, flags); | |
1092 | ||
1093 | /* Spurious interrupt check */ | |
1094 | if ((SMC_GET_IRQ_CFG() & (INT_CFG_IRQ_INT_ | INT_CFG_IRQ_EN_)) != | |
1095 | (INT_CFG_IRQ_INT_ | INT_CFG_IRQ_EN_)) { | |
a4d09272 | 1096 | spin_unlock_irqrestore(&lp->lock, flags); |
0a0c72c9 DM |
1097 | return IRQ_NONE; |
1098 | } | |
1099 | ||
1100 | mask = SMC_GET_INT_EN(); | |
1101 | SMC_SET_INT_EN(0); | |
1102 | ||
1103 | /* set a timeout value, so I don't stay here forever */ | |
1104 | timeout = 8; | |
1105 | ||
1106 | ||
1107 | do { | |
1108 | status = SMC_GET_INT(); | |
1109 | ||
1110 | DBG(SMC_DEBUG_MISC, "%s: INT 0x%08x MASK 0x%08x OUTSIDE MASK 0x%08x\n", | |
1111 | dev->name, status, mask, status & ~mask); | |
1112 | ||
1113 | status &= mask; | |
1114 | if (!status) | |
1115 | break; | |
1116 | ||
1117 | /* Handle SW interrupt condition */ | |
1118 | if (status & INT_STS_SW_INT_) { | |
1119 | SMC_ACK_INT(INT_STS_SW_INT_); | |
1120 | mask &= ~INT_EN_SW_INT_EN_; | |
1121 | } | |
1122 | /* Handle various error conditions */ | |
1123 | if (status & INT_STS_RXE_) { | |
1124 | SMC_ACK_INT(INT_STS_RXE_); | |
1125 | lp->stats.rx_errors++; | |
d5498bef | 1126 | } |
0a0c72c9 DM |
1127 | if (status & INT_STS_RXDFH_INT_) { |
1128 | SMC_ACK_INT(INT_STS_RXDFH_INT_); | |
1129 | lp->stats.rx_dropped+=SMC_GET_RX_DROP(); | |
1130 | } | |
1131 | /* Undocumented interrupt-what is the right thing to do here? */ | |
1132 | if (status & INT_STS_RXDF_INT_) { | |
1133 | SMC_ACK_INT(INT_STS_RXDF_INT_); | |
1134 | } | |
1135 | ||
1136 | /* Rx Data FIFO exceeds set level */ | |
1137 | if (status & INT_STS_RDFL_) { | |
1138 | if (IS_REV_A(lp->revision)) { | |
1139 | rx_overrun=1; | |
1140 | SMC_GET_MAC_CR(cr); | |
1141 | cr &= ~MAC_CR_RXEN_; | |
1142 | SMC_SET_MAC_CR(cr); | |
1143 | DBG(SMC_DEBUG_RX, "%s: RX overrun\n", dev->name); | |
1144 | lp->stats.rx_errors++; | |
1145 | lp->stats.rx_fifo_errors++; | |
1146 | } | |
1147 | SMC_ACK_INT(INT_STS_RDFL_); | |
1148 | } | |
1149 | if (status & INT_STS_RDFO_) { | |
1150 | if (!IS_REV_A(lp->revision)) { | |
1151 | SMC_GET_MAC_CR(cr); | |
1152 | cr &= ~MAC_CR_RXEN_; | |
1153 | SMC_SET_MAC_CR(cr); | |
1154 | rx_overrun=1; | |
1155 | DBG(SMC_DEBUG_RX, "%s: RX overrun\n", dev->name); | |
1156 | lp->stats.rx_errors++; | |
1157 | lp->stats.rx_fifo_errors++; | |
1158 | } | |
1159 | SMC_ACK_INT(INT_STS_RDFO_); | |
1160 | } | |
1161 | /* Handle receive condition */ | |
1162 | if ((status & INT_STS_RSFL_) || rx_overrun) { | |
1163 | unsigned int fifo; | |
1164 | DBG(SMC_DEBUG_RX, "%s: RX irq\n", dev->name); | |
d5498bef JG |
1165 | fifo = SMC_GET_RX_FIFO_INF(); |
1166 | pkts = (fifo & RX_FIFO_INF_RXSUSED_) >> 16; | |
1167 | DBG(SMC_DEBUG_RX, "%s: Rx FIFO pkts %d, bytes %d\n", | |
0a0c72c9 DM |
1168 | dev->name, pkts, fifo & 0xFFFF ); |
1169 | if (pkts != 0) { | |
1170 | #ifdef SMC_USE_DMA | |
1171 | unsigned int fifo; | |
1172 | if (lp->rxdma_active){ | |
d5498bef | 1173 | DBG(SMC_DEBUG_RX | SMC_DEBUG_DMA, |
0a0c72c9 DM |
1174 | "%s: RX DMA active\n", dev->name); |
1175 | /* The DMA is already running so up the IRQ threshold */ | |
1176 | fifo = SMC_GET_FIFO_INT() & ~0xFF; | |
1177 | fifo |= pkts & 0xFF; | |
d5498bef | 1178 | DBG(SMC_DEBUG_RX, |
0a0c72c9 DM |
1179 | "%s: Setting RX stat FIFO threshold to %d\n", |
1180 | dev->name, fifo & 0xff); | |
1181 | SMC_SET_FIFO_INT(fifo); | |
1182 | } else | |
1183 | #endif | |
1184 | smc911x_rcv(dev); | |
1185 | } | |
1186 | SMC_ACK_INT(INT_STS_RSFL_); | |
1187 | } | |
1188 | /* Handle transmit FIFO available */ | |
1189 | if (status & INT_STS_TDFA_) { | |
1190 | DBG(SMC_DEBUG_TX, "%s: TX data FIFO space available irq\n", dev->name); | |
1191 | SMC_SET_FIFO_TDA(0xFF); | |
1192 | lp->tx_throttle = 0; | |
1193 | #ifdef SMC_USE_DMA | |
1194 | if (!lp->txdma_active) | |
1195 | #endif | |
1196 | netif_wake_queue(dev); | |
1197 | SMC_ACK_INT(INT_STS_TDFA_); | |
1198 | } | |
1199 | /* Handle transmit done condition */ | |
1200 | #if 1 | |
1201 | if (status & (INT_STS_TSFL_ | INT_STS_GPT_INT_)) { | |
d5498bef JG |
1202 | DBG(SMC_DEBUG_TX | SMC_DEBUG_MISC, |
1203 | "%s: Tx stat FIFO limit (%d) /GPT irq\n", | |
0a0c72c9 DM |
1204 | dev->name, (SMC_GET_FIFO_INT() & 0x00ff0000) >> 16); |
1205 | smc911x_tx(dev); | |
1206 | SMC_SET_GPT_CFG(GPT_CFG_TIMER_EN_ | 10000); | |
1207 | SMC_ACK_INT(INT_STS_TSFL_); | |
1208 | SMC_ACK_INT(INT_STS_TSFL_ | INT_STS_GPT_INT_); | |
1209 | } | |
1210 | #else | |
1211 | if (status & INT_STS_TSFL_) { | |
1212 | DBG(SMC_DEBUG_TX, "%s: TX status FIFO limit (%d) irq \n", dev->name, ); | |
1213 | smc911x_tx(dev); | |
1214 | SMC_ACK_INT(INT_STS_TSFL_); | |
1215 | } | |
1216 | ||
1217 | if (status & INT_STS_GPT_INT_) { | |
d5498bef JG |
1218 | DBG(SMC_DEBUG_RX, "%s: IRQ_CFG 0x%08x FIFO_INT 0x%08x RX_CFG 0x%08x\n", |
1219 | dev->name, | |
1220 | SMC_GET_IRQ_CFG(), | |
1221 | SMC_GET_FIFO_INT(), | |
0a0c72c9 DM |
1222 | SMC_GET_RX_CFG()); |
1223 | DBG(SMC_DEBUG_RX, "%s: Rx Stat FIFO Used 0x%02x " | |
1224 | "Data FIFO Used 0x%04x Stat FIFO 0x%08x\n", | |
d5498bef JG |
1225 | dev->name, |
1226 | (SMC_GET_RX_FIFO_INF() & 0x00ff0000) >> 16, | |
1227 | SMC_GET_RX_FIFO_INF() & 0xffff, | |
0a0c72c9 DM |
1228 | SMC_GET_RX_STS_FIFO_PEEK()); |
1229 | SMC_SET_GPT_CFG(GPT_CFG_TIMER_EN_ | 10000); | |
1230 | SMC_ACK_INT(INT_STS_GPT_INT_); | |
1231 | } | |
1232 | #endif | |
1233 | ||
1234 | /* Handle PHY interupt condition */ | |
1235 | if (status & INT_STS_PHY_INT_) { | |
1236 | DBG(SMC_DEBUG_MISC, "%s: PHY irq\n", dev->name); | |
1237 | smc911x_phy_interrupt(dev); | |
1238 | SMC_ACK_INT(INT_STS_PHY_INT_); | |
1239 | } | |
1240 | } while (--timeout); | |
1241 | ||
1242 | /* restore mask state */ | |
1243 | SMC_SET_INT_EN(mask); | |
1244 | ||
d5498bef | 1245 | DBG(SMC_DEBUG_MISC, "%s: Interrupt done (%d loops)\n", |
0a0c72c9 DM |
1246 | dev->name, 8-timeout); |
1247 | ||
1248 | spin_unlock_irqrestore(&lp->lock, flags); | |
1249 | ||
1250 | DBG(3, "%s: Interrupt done (%d loops)\n", dev->name, 8-timeout); | |
1251 | ||
1252 | return IRQ_HANDLED; | |
1253 | } | |
1254 | ||
1255 | #ifdef SMC_USE_DMA | |
1256 | static void | |
7d12e780 | 1257 | smc911x_tx_dma_irq(int dma, void *data) |
0a0c72c9 DM |
1258 | { |
1259 | struct net_device *dev = (struct net_device *)data; | |
1260 | struct smc911x_local *lp = netdev_priv(dev); | |
1261 | struct sk_buff *skb = lp->current_tx_skb; | |
1262 | unsigned long flags; | |
1263 | ||
1264 | DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __FUNCTION__); | |
1265 | ||
1266 | DBG(SMC_DEBUG_TX | SMC_DEBUG_DMA, "%s: TX DMA irq handler\n", dev->name); | |
1267 | /* Clear the DMA interrupt sources */ | |
1268 | SMC_DMA_ACK_IRQ(dev, dma); | |
1269 | BUG_ON(skb == NULL); | |
1270 | dma_unmap_single(NULL, tx_dmabuf, tx_dmalen, DMA_TO_DEVICE); | |
1271 | dev->trans_start = jiffies; | |
1272 | dev_kfree_skb_irq(skb); | |
1273 | lp->current_tx_skb = NULL; | |
1274 | if (lp->pending_tx_skb != NULL) | |
1275 | smc911x_hardware_send_pkt(dev); | |
1276 | else { | |
d5498bef | 1277 | DBG(SMC_DEBUG_TX | SMC_DEBUG_DMA, |
0a0c72c9 DM |
1278 | "%s: No pending Tx packets. DMA disabled\n", dev->name); |
1279 | spin_lock_irqsave(&lp->lock, flags); | |
1280 | lp->txdma_active = 0; | |
1281 | if (!lp->tx_throttle) { | |
1282 | netif_wake_queue(dev); | |
1283 | } | |
1284 | spin_unlock_irqrestore(&lp->lock, flags); | |
1285 | } | |
1286 | ||
d5498bef | 1287 | DBG(SMC_DEBUG_TX | SMC_DEBUG_DMA, |
0a0c72c9 DM |
1288 | "%s: TX DMA irq completed\n", dev->name); |
1289 | } | |
1290 | static void | |
7d12e780 | 1291 | smc911x_rx_dma_irq(int dma, void *data) |
0a0c72c9 DM |
1292 | { |
1293 | struct net_device *dev = (struct net_device *)data; | |
1294 | unsigned long ioaddr = dev->base_addr; | |
1295 | struct smc911x_local *lp = netdev_priv(dev); | |
1296 | struct sk_buff *skb = lp->current_rx_skb; | |
1297 | unsigned long flags; | |
1298 | unsigned int pkts; | |
1299 | ||
1300 | DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __FUNCTION__); | |
1301 | DBG(SMC_DEBUG_RX | SMC_DEBUG_DMA, "%s: RX DMA irq handler\n", dev->name); | |
1302 | /* Clear the DMA interrupt sources */ | |
1303 | SMC_DMA_ACK_IRQ(dev, dma); | |
1304 | dma_unmap_single(NULL, rx_dmabuf, rx_dmalen, DMA_FROM_DEVICE); | |
1305 | BUG_ON(skb == NULL); | |
1306 | lp->current_rx_skb = NULL; | |
1307 | PRINT_PKT(skb->data, skb->len); | |
1308 | dev->last_rx = jiffies; | |
1309 | skb->dev = dev; | |
1310 | skb->protocol = eth_type_trans(skb, dev); | |
1311 | netif_rx(skb); | |
1312 | lp->stats.rx_packets++; | |
1313 | lp->stats.rx_bytes += skb->len; | |
1314 | ||
1315 | spin_lock_irqsave(&lp->lock, flags); | |
d5498bef | 1316 | pkts = (SMC_GET_RX_FIFO_INF() & RX_FIFO_INF_RXSUSED_) >> 16; |
0a0c72c9 DM |
1317 | if (pkts != 0) { |
1318 | smc911x_rcv(dev); | |
1319 | }else { | |
1320 | lp->rxdma_active = 0; | |
1321 | } | |
1322 | spin_unlock_irqrestore(&lp->lock, flags); | |
d5498bef JG |
1323 | DBG(SMC_DEBUG_RX | SMC_DEBUG_DMA, |
1324 | "%s: RX DMA irq completed. DMA RX FIFO PKTS %d\n", | |
0a0c72c9 DM |
1325 | dev->name, pkts); |
1326 | } | |
1327 | #endif /* SMC_USE_DMA */ | |
1328 | ||
1329 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1330 | /* | |
1331 | * Polling receive - used by netconsole and other diagnostic tools | |
1332 | * to allow network i/o with interrupts disabled. | |
1333 | */ | |
1334 | static void smc911x_poll_controller(struct net_device *dev) | |
1335 | { | |
1336 | disable_irq(dev->irq); | |
9b6d2efe | 1337 | smc911x_interrupt(dev->irq, dev); |
0a0c72c9 DM |
1338 | enable_irq(dev->irq); |
1339 | } | |
1340 | #endif | |
1341 | ||
1342 | /* Our watchdog timed out. Called by the networking layer */ | |
1343 | static void smc911x_timeout(struct net_device *dev) | |
1344 | { | |
1345 | struct smc911x_local *lp = netdev_priv(dev); | |
1346 | unsigned long ioaddr = dev->base_addr; | |
1347 | int status, mask; | |
1348 | unsigned long flags; | |
1349 | ||
1350 | DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __FUNCTION__); | |
1351 | ||
1352 | spin_lock_irqsave(&lp->lock, flags); | |
1353 | status = SMC_GET_INT(); | |
1354 | mask = SMC_GET_INT_EN(); | |
1355 | spin_unlock_irqrestore(&lp->lock, flags); | |
1356 | DBG(SMC_DEBUG_MISC, "%s: INT 0x%02x MASK 0x%02x \n", | |
1357 | dev->name, status, mask); | |
1358 | ||
1359 | /* Dump the current TX FIFO contents and restart */ | |
d5498bef JG |
1360 | mask = SMC_GET_TX_CFG(); |
1361 | SMC_SET_TX_CFG(mask | TX_CFG_TXS_DUMP_ | TX_CFG_TXD_DUMP_); | |
0a0c72c9 DM |
1362 | /* |
1363 | * Reconfiguring the PHY doesn't seem like a bad idea here, but | |
1364 | * smc911x_phy_configure() calls msleep() which calls schedule_timeout() | |
1365 | * which calls schedule(). Hence we use a work queue. | |
1366 | */ | |
1367 | if (lp->phy_type != 0) { | |
1368 | if (schedule_work(&lp->phy_configure)) { | |
1369 | lp->work_pending = 1; | |
1370 | } | |
1371 | } | |
1372 | ||
1373 | /* We can accept TX packets again */ | |
1374 | dev->trans_start = jiffies; | |
1375 | netif_wake_queue(dev); | |
1376 | } | |
1377 | ||
1378 | /* | |
1379 | * This routine will, depending on the values passed to it, | |
1380 | * either make it accept multicast packets, go into | |
1381 | * promiscuous mode (for TCPDUMP and cousins) or accept | |
1382 | * a select set of multicast packets | |
1383 | */ | |
1384 | static void smc911x_set_multicast_list(struct net_device *dev) | |
1385 | { | |
1386 | struct smc911x_local *lp = netdev_priv(dev); | |
1387 | unsigned long ioaddr = dev->base_addr; | |
1388 | unsigned int multicast_table[2]; | |
1389 | unsigned int mcr, update_multicast = 0; | |
1390 | unsigned long flags; | |
1391 | /* table for flipping the order of 5 bits */ | |
d5498bef | 1392 | static const unsigned char invert5[] = |
0a0c72c9 DM |
1393 | {0x00, 0x10, 0x08, 0x18, 0x04, 0x14, 0x0C, 0x1C, |
1394 | 0x02, 0x12, 0x0A, 0x1A, 0x06, 0x16, 0x0E, 0x1E, | |
1395 | 0x01, 0x11, 0x09, 0x19, 0x05, 0x15, 0x0D, 0x1D, | |
1396 | 0x03, 0x13, 0x0B, 0x1B, 0x07, 0x17, 0x0F, 0x1F}; | |
1397 | ||
1398 | ||
1399 | DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __FUNCTION__); | |
1400 | ||
1401 | spin_lock_irqsave(&lp->lock, flags); | |
1402 | SMC_GET_MAC_CR(mcr); | |
1403 | spin_unlock_irqrestore(&lp->lock, flags); | |
1404 | ||
1405 | if (dev->flags & IFF_PROMISC) { | |
1406 | ||
1407 | DBG(SMC_DEBUG_MISC, "%s: RCR_PRMS\n", dev->name); | |
1408 | mcr |= MAC_CR_PRMS_; | |
1409 | } | |
1410 | /* | |
1411 | * Here, I am setting this to accept all multicast packets. | |
1412 | * I don't need to zero the multicast table, because the flag is | |
1413 | * checked before the table is | |
1414 | */ | |
1415 | else if (dev->flags & IFF_ALLMULTI || dev->mc_count > 16) { | |
1416 | DBG(SMC_DEBUG_MISC, "%s: RCR_ALMUL\n", dev->name); | |
1417 | mcr |= MAC_CR_MCPAS_; | |
1418 | } | |
1419 | ||
1420 | /* | |
1421 | * This sets the internal hardware table to filter out unwanted | |
1422 | * multicast packets before they take up memory. | |
1423 | * | |
1424 | * The SMC chip uses a hash table where the high 6 bits of the CRC of | |
1425 | * address are the offset into the table. If that bit is 1, then the | |
1426 | * multicast packet is accepted. Otherwise, it's dropped silently. | |
1427 | * | |
1428 | * To use the 6 bits as an offset into the table, the high 1 bit is | |
1429 | * the number of the 32 bit register, while the low 5 bits are the bit | |
1430 | * within that register. | |
1431 | */ | |
1432 | else if (dev->mc_count) { | |
1433 | int i; | |
1434 | struct dev_mc_list *cur_addr; | |
1435 | ||
1436 | /* Set the Hash perfec mode */ | |
1437 | mcr |= MAC_CR_HPFILT_; | |
1438 | ||
1439 | /* start with a table of all zeros: reject all */ | |
1440 | memset(multicast_table, 0, sizeof(multicast_table)); | |
1441 | ||
1442 | cur_addr = dev->mc_list; | |
1443 | for (i = 0; i < dev->mc_count; i++, cur_addr = cur_addr->next) { | |
1444 | int position; | |
1445 | ||
1446 | /* do we have a pointer here? */ | |
1447 | if (!cur_addr) | |
1448 | break; | |
1449 | /* make sure this is a multicast address - | |
1450 | shouldn't this be a given if we have it here ? */ | |
1451 | if (!(*cur_addr->dmi_addr & 1)) | |
1452 | continue; | |
1453 | ||
1454 | /* only use the low order bits */ | |
1455 | position = crc32_le(~0, cur_addr->dmi_addr, 6) & 0x3f; | |
1456 | ||
1457 | /* do some messy swapping to put the bit in the right spot */ | |
1458 | multicast_table[invert5[position&0x1F]&0x1] |= | |
1459 | (1<<invert5[(position>>1)&0x1F]); | |
1460 | } | |
1461 | ||
1462 | /* be sure I get rid of flags I might have set */ | |
1463 | mcr &= ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_); | |
1464 | ||
1465 | /* now, the table can be loaded into the chipset */ | |
1466 | update_multicast = 1; | |
1467 | } else { | |
d5498bef | 1468 | DBG(SMC_DEBUG_MISC, "%s: ~(MAC_CR_PRMS_|MAC_CR_MCPAS_)\n", |
0a0c72c9 DM |
1469 | dev->name); |
1470 | mcr &= ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_); | |
1471 | ||
1472 | /* | |
1473 | * since I'm disabling all multicast entirely, I need to | |
1474 | * clear the multicast list | |
1475 | */ | |
1476 | memset(multicast_table, 0, sizeof(multicast_table)); | |
1477 | update_multicast = 1; | |
1478 | } | |
1479 | ||
1480 | spin_lock_irqsave(&lp->lock, flags); | |
1481 | SMC_SET_MAC_CR(mcr); | |
1482 | if (update_multicast) { | |
d5498bef JG |
1483 | DBG(SMC_DEBUG_MISC, |
1484 | "%s: update mcast hash table 0x%08x 0x%08x\n", | |
0a0c72c9 DM |
1485 | dev->name, multicast_table[0], multicast_table[1]); |
1486 | SMC_SET_HASHL(multicast_table[0]); | |
1487 | SMC_SET_HASHH(multicast_table[1]); | |
1488 | } | |
1489 | spin_unlock_irqrestore(&lp->lock, flags); | |
1490 | } | |
1491 | ||
1492 | ||
1493 | /* | |
1494 | * Open and Initialize the board | |
1495 | * | |
1496 | * Set up everything, reset the card, etc.. | |
1497 | */ | |
1498 | static int | |
1499 | smc911x_open(struct net_device *dev) | |
1500 | { | |
ef8142a5 AM |
1501 | struct smc911x_local *lp = netdev_priv(dev); |
1502 | ||
0a0c72c9 DM |
1503 | DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __FUNCTION__); |
1504 | ||
1505 | /* | |
1506 | * Check that the address is valid. If its not, refuse | |
1507 | * to bring the device up. The user must specify an | |
1508 | * address using ifconfig eth0 hw ether xx:xx:xx:xx:xx:xx | |
1509 | */ | |
1510 | if (!is_valid_ether_addr(dev->dev_addr)) { | |
1511 | PRINTK("%s: no valid ethernet hw addr\n", __FUNCTION__); | |
1512 | return -EINVAL; | |
1513 | } | |
1514 | ||
1515 | /* reset the hardware */ | |
1516 | smc911x_reset(dev); | |
1517 | ||
1518 | /* Configure the PHY, initialize the link state */ | |
ef8142a5 | 1519 | smc911x_phy_configure(&lp->phy_configure); |
0a0c72c9 DM |
1520 | |
1521 | /* Turn on Tx + Rx */ | |
1522 | smc911x_enable(dev); | |
1523 | ||
1524 | netif_start_queue(dev); | |
1525 | ||
1526 | return 0; | |
1527 | } | |
1528 | ||
1529 | /* | |
1530 | * smc911x_close | |
1531 | * | |
1532 | * this makes the board clean up everything that it can | |
1533 | * and not talk to the outside world. Caused by | |
1534 | * an 'ifconfig ethX down' | |
1535 | */ | |
1536 | static int smc911x_close(struct net_device *dev) | |
1537 | { | |
1538 | struct smc911x_local *lp = netdev_priv(dev); | |
1539 | ||
1540 | DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __FUNCTION__); | |
1541 | ||
1542 | netif_stop_queue(dev); | |
1543 | netif_carrier_off(dev); | |
1544 | ||
1545 | /* clear everything */ | |
1546 | smc911x_shutdown(dev); | |
1547 | ||
1548 | if (lp->phy_type != 0) { | |
1549 | /* We need to ensure that no calls to | |
1550 | * smc911x_phy_configure are pending. | |
1551 | ||
1552 | * flush_scheduled_work() cannot be called because we | |
1553 | * are running with the netlink semaphore held (from | |
1554 | * devinet_ioctl()) and the pending work queue | |
1555 | * contains linkwatch_event() (scheduled by | |
1556 | * netif_carrier_off() above). linkwatch_event() also | |
1557 | * wants the netlink semaphore. | |
1558 | */ | |
1559 | while (lp->work_pending) | |
1560 | schedule(); | |
1561 | smc911x_phy_powerdown(dev, lp->mii.phy_id); | |
1562 | } | |
1563 | ||
1564 | if (lp->pending_tx_skb) { | |
1565 | dev_kfree_skb(lp->pending_tx_skb); | |
1566 | lp->pending_tx_skb = NULL; | |
1567 | } | |
1568 | ||
1569 | return 0; | |
1570 | } | |
1571 | ||
1572 | /* | |
1573 | * Get the current statistics. | |
1574 | * This may be called with the card open or closed. | |
1575 | */ | |
1576 | static struct net_device_stats *smc911x_query_statistics(struct net_device *dev) | |
1577 | { | |
1578 | struct smc911x_local *lp = netdev_priv(dev); | |
1579 | DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __FUNCTION__); | |
1580 | ||
1581 | ||
1582 | return &lp->stats; | |
1583 | } | |
1584 | ||
1585 | /* | |
1586 | * Ethtool support | |
1587 | */ | |
1588 | static int | |
1589 | smc911x_ethtool_getsettings(struct net_device *dev, struct ethtool_cmd *cmd) | |
1590 | { | |
1591 | struct smc911x_local *lp = netdev_priv(dev); | |
1592 | unsigned long ioaddr = dev->base_addr; | |
1593 | int ret, status; | |
1594 | unsigned long flags; | |
1595 | ||
1596 | DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __FUNCTION__); | |
1597 | cmd->maxtxpkt = 1; | |
1598 | cmd->maxrxpkt = 1; | |
1599 | ||
1600 | if (lp->phy_type != 0) { | |
1601 | spin_lock_irqsave(&lp->lock, flags); | |
1602 | ret = mii_ethtool_gset(&lp->mii, cmd); | |
1603 | spin_unlock_irqrestore(&lp->lock, flags); | |
1604 | } else { | |
1605 | cmd->supported = SUPPORTED_10baseT_Half | | |
1606 | SUPPORTED_10baseT_Full | | |
1607 | SUPPORTED_TP | SUPPORTED_AUI; | |
1608 | ||
1609 | if (lp->ctl_rspeed == 10) | |
1610 | cmd->speed = SPEED_10; | |
1611 | else if (lp->ctl_rspeed == 100) | |
1612 | cmd->speed = SPEED_100; | |
1613 | ||
1614 | cmd->autoneg = AUTONEG_DISABLE; | |
1615 | if (lp->mii.phy_id==1) | |
1616 | cmd->transceiver = XCVR_INTERNAL; | |
1617 | else | |
1618 | cmd->transceiver = XCVR_EXTERNAL; | |
1619 | cmd->port = 0; | |
1620 | SMC_GET_PHY_SPECIAL(lp->mii.phy_id, status); | |
d5498bef JG |
1621 | cmd->duplex = |
1622 | (status & (PHY_SPECIAL_SPD_10FULL_ | PHY_SPECIAL_SPD_100FULL_)) ? | |
0a0c72c9 DM |
1623 | DUPLEX_FULL : DUPLEX_HALF; |
1624 | ret = 0; | |
1625 | } | |
1626 | ||
1627 | return ret; | |
1628 | } | |
1629 | ||
1630 | static int | |
1631 | smc911x_ethtool_setsettings(struct net_device *dev, struct ethtool_cmd *cmd) | |
1632 | { | |
1633 | struct smc911x_local *lp = netdev_priv(dev); | |
1634 | int ret; | |
1635 | unsigned long flags; | |
1636 | ||
1637 | if (lp->phy_type != 0) { | |
1638 | spin_lock_irqsave(&lp->lock, flags); | |
1639 | ret = mii_ethtool_sset(&lp->mii, cmd); | |
1640 | spin_unlock_irqrestore(&lp->lock, flags); | |
1641 | } else { | |
1642 | if (cmd->autoneg != AUTONEG_DISABLE || | |
1643 | cmd->speed != SPEED_10 || | |
1644 | (cmd->duplex != DUPLEX_HALF && cmd->duplex != DUPLEX_FULL) || | |
1645 | (cmd->port != PORT_TP && cmd->port != PORT_AUI)) | |
1646 | return -EINVAL; | |
1647 | ||
1648 | lp->ctl_rfduplx = cmd->duplex == DUPLEX_FULL; | |
1649 | ||
1650 | ret = 0; | |
1651 | } | |
1652 | ||
1653 | return ret; | |
1654 | } | |
1655 | ||
1656 | static void | |
1657 | smc911x_ethtool_getdrvinfo(struct net_device *dev, struct ethtool_drvinfo *info) | |
1658 | { | |
1659 | strncpy(info->driver, CARDNAME, sizeof(info->driver)); | |
1660 | strncpy(info->version, version, sizeof(info->version)); | |
1661 | strncpy(info->bus_info, dev->class_dev.dev->bus_id, sizeof(info->bus_info)); | |
1662 | } | |
1663 | ||
1664 | static int smc911x_ethtool_nwayreset(struct net_device *dev) | |
1665 | { | |
1666 | struct smc911x_local *lp = netdev_priv(dev); | |
1667 | int ret = -EINVAL; | |
1668 | unsigned long flags; | |
1669 | ||
1670 | if (lp->phy_type != 0) { | |
1671 | spin_lock_irqsave(&lp->lock, flags); | |
1672 | ret = mii_nway_restart(&lp->mii); | |
1673 | spin_unlock_irqrestore(&lp->lock, flags); | |
1674 | } | |
1675 | ||
1676 | return ret; | |
1677 | } | |
1678 | ||
1679 | static u32 smc911x_ethtool_getmsglevel(struct net_device *dev) | |
1680 | { | |
1681 | struct smc911x_local *lp = netdev_priv(dev); | |
1682 | return lp->msg_enable; | |
1683 | } | |
1684 | ||
1685 | static void smc911x_ethtool_setmsglevel(struct net_device *dev, u32 level) | |
1686 | { | |
1687 | struct smc911x_local *lp = netdev_priv(dev); | |
1688 | lp->msg_enable = level; | |
1689 | } | |
1690 | ||
1691 | static int smc911x_ethtool_getregslen(struct net_device *dev) | |
1692 | { | |
1693 | /* System regs + MAC regs + PHY regs */ | |
d5498bef JG |
1694 | return (((E2P_CMD - ID_REV)/4 + 1) + |
1695 | (WUCSR - MAC_CR)+1 + 32) * sizeof(u32); | |
0a0c72c9 DM |
1696 | } |
1697 | ||
d5498bef | 1698 | static void smc911x_ethtool_getregs(struct net_device *dev, |
0a0c72c9 DM |
1699 | struct ethtool_regs* regs, void *buf) |
1700 | { | |
1701 | unsigned long ioaddr = dev->base_addr; | |
1702 | struct smc911x_local *lp = netdev_priv(dev); | |
1703 | unsigned long flags; | |
1704 | u32 reg,i,j=0; | |
1705 | u32 *data = (u32*)buf; | |
1706 | ||
1707 | regs->version = lp->version; | |
1708 | for(i=ID_REV;i<=E2P_CMD;i+=4) { | |
d5498bef | 1709 | data[j++] = SMC_inl(ioaddr,i); |
0a0c72c9 DM |
1710 | } |
1711 | for(i=MAC_CR;i<=WUCSR;i++) { | |
1712 | spin_lock_irqsave(&lp->lock, flags); | |
1713 | SMC_GET_MAC_CSR(i, reg); | |
1714 | spin_unlock_irqrestore(&lp->lock, flags); | |
d5498bef | 1715 | data[j++] = reg; |
0a0c72c9 DM |
1716 | } |
1717 | for(i=0;i<=31;i++) { | |
1718 | spin_lock_irqsave(&lp->lock, flags); | |
1719 | SMC_GET_MII(i, lp->mii.phy_id, reg); | |
1720 | spin_unlock_irqrestore(&lp->lock, flags); | |
d5498bef | 1721 | data[j++] = reg & 0xFFFF; |
0a0c72c9 DM |
1722 | } |
1723 | } | |
1724 | ||
1725 | static int smc911x_ethtool_wait_eeprom_ready(struct net_device *dev) | |
1726 | { | |
1727 | unsigned long ioaddr = dev->base_addr; | |
1728 | unsigned int timeout; | |
1729 | int e2p_cmd; | |
1730 | ||
1731 | e2p_cmd = SMC_GET_E2P_CMD(); | |
1732 | for(timeout=10;(e2p_cmd & E2P_CMD_EPC_BUSY_) && timeout; timeout--) { | |
1733 | if (e2p_cmd & E2P_CMD_EPC_TIMEOUT_) { | |
d5498bef | 1734 | PRINTK("%s: %s timeout waiting for EEPROM to respond\n", |
0a0c72c9 DM |
1735 | dev->name, __FUNCTION__); |
1736 | return -EFAULT; | |
d5498bef | 1737 | } |
0a0c72c9 DM |
1738 | mdelay(1); |
1739 | e2p_cmd = SMC_GET_E2P_CMD(); | |
1740 | } | |
1741 | if (timeout == 0) { | |
d5498bef | 1742 | PRINTK("%s: %s timeout waiting for EEPROM CMD not busy\n", |
0a0c72c9 DM |
1743 | dev->name, __FUNCTION__); |
1744 | return -ETIMEDOUT; | |
1745 | } | |
1746 | return 0; | |
1747 | } | |
1748 | ||
d5498bef | 1749 | static inline int smc911x_ethtool_write_eeprom_cmd(struct net_device *dev, |
0a0c72c9 DM |
1750 | int cmd, int addr) |
1751 | { | |
1752 | unsigned long ioaddr = dev->base_addr; | |
1753 | int ret; | |
1754 | ||
d5498bef | 1755 | if ((ret = smc911x_ethtool_wait_eeprom_ready(dev))!=0) |
0a0c72c9 | 1756 | return ret; |
d5498bef JG |
1757 | SMC_SET_E2P_CMD(E2P_CMD_EPC_BUSY_ | |
1758 | ((cmd) & (0x7<<28)) | | |
0a0c72c9 DM |
1759 | ((addr) & 0xFF)); |
1760 | return 0; | |
1761 | } | |
1762 | ||
d5498bef | 1763 | static inline int smc911x_ethtool_read_eeprom_byte(struct net_device *dev, |
0a0c72c9 DM |
1764 | u8 *data) |
1765 | { | |
1766 | unsigned long ioaddr = dev->base_addr; | |
1767 | int ret; | |
1768 | ||
d5498bef | 1769 | if ((ret = smc911x_ethtool_wait_eeprom_ready(dev))!=0) |
0a0c72c9 DM |
1770 | return ret; |
1771 | *data = SMC_GET_E2P_DATA(); | |
1772 | return 0; | |
1773 | } | |
1774 | ||
d5498bef | 1775 | static inline int smc911x_ethtool_write_eeprom_byte(struct net_device *dev, |
0a0c72c9 DM |
1776 | u8 data) |
1777 | { | |
1778 | unsigned long ioaddr = dev->base_addr; | |
1779 | int ret; | |
1780 | ||
d5498bef | 1781 | if ((ret = smc911x_ethtool_wait_eeprom_ready(dev))!=0) |
0a0c72c9 DM |
1782 | return ret; |
1783 | SMC_SET_E2P_DATA(data); | |
1784 | return 0; | |
1785 | } | |
1786 | ||
d5498bef | 1787 | static int smc911x_ethtool_geteeprom(struct net_device *dev, |
0a0c72c9 DM |
1788 | struct ethtool_eeprom *eeprom, u8 *data) |
1789 | { | |
1790 | u8 eebuf[SMC911X_EEPROM_LEN]; | |
1791 | int i, ret; | |
1792 | ||
1793 | for(i=0;i<SMC911X_EEPROM_LEN;i++) { | |
1794 | if ((ret=smc911x_ethtool_write_eeprom_cmd(dev, E2P_CMD_EPC_CMD_READ_, i ))!=0) | |
1795 | return ret; | |
1796 | if ((ret=smc911x_ethtool_read_eeprom_byte(dev, &eebuf[i]))!=0) | |
1797 | return ret; | |
1798 | } | |
1799 | memcpy(data, eebuf+eeprom->offset, eeprom->len); | |
d5498bef | 1800 | return 0; |
0a0c72c9 DM |
1801 | } |
1802 | ||
d5498bef | 1803 | static int smc911x_ethtool_seteeprom(struct net_device *dev, |
0a0c72c9 DM |
1804 | struct ethtool_eeprom *eeprom, u8 *data) |
1805 | { | |
1806 | int i, ret; | |
1807 | ||
1808 | /* Enable erase */ | |
1809 | if ((ret=smc911x_ethtool_write_eeprom_cmd(dev, E2P_CMD_EPC_CMD_EWEN_, 0 ))!=0) | |
1810 | return ret; | |
1811 | for(i=eeprom->offset;i<(eeprom->offset+eeprom->len);i++) { | |
1812 | /* erase byte */ | |
1813 | if ((ret=smc911x_ethtool_write_eeprom_cmd(dev, E2P_CMD_EPC_CMD_ERASE_, i ))!=0) | |
1814 | return ret; | |
1815 | /* write byte */ | |
1816 | if ((ret=smc911x_ethtool_write_eeprom_byte(dev, *data))!=0) | |
1817 | return ret; | |
1818 | if ((ret=smc911x_ethtool_write_eeprom_cmd(dev, E2P_CMD_EPC_CMD_WRITE_, i ))!=0) | |
1819 | return ret; | |
1820 | } | |
1821 | return 0; | |
1822 | } | |
1823 | ||
1824 | static int smc911x_ethtool_geteeprom_len(struct net_device *dev) | |
1825 | { | |
1826 | return SMC911X_EEPROM_LEN; | |
1827 | } | |
1828 | ||
7282d491 | 1829 | static const struct ethtool_ops smc911x_ethtool_ops = { |
0a0c72c9 DM |
1830 | .get_settings = smc911x_ethtool_getsettings, |
1831 | .set_settings = smc911x_ethtool_setsettings, | |
1832 | .get_drvinfo = smc911x_ethtool_getdrvinfo, | |
1833 | .get_msglevel = smc911x_ethtool_getmsglevel, | |
1834 | .set_msglevel = smc911x_ethtool_setmsglevel, | |
1835 | .nway_reset = smc911x_ethtool_nwayreset, | |
1836 | .get_link = ethtool_op_get_link, | |
1837 | .get_regs_len = smc911x_ethtool_getregslen, | |
1838 | .get_regs = smc911x_ethtool_getregs, | |
1839 | .get_eeprom_len = smc911x_ethtool_geteeprom_len, | |
1840 | .get_eeprom = smc911x_ethtool_geteeprom, | |
1841 | .set_eeprom = smc911x_ethtool_seteeprom, | |
1842 | }; | |
1843 | ||
1844 | /* | |
1845 | * smc911x_findirq | |
1846 | * | |
1847 | * This routine has a simple purpose -- make the SMC chip generate an | |
1848 | * interrupt, so an auto-detect routine can detect it, and find the IRQ, | |
1849 | */ | |
1850 | static int __init smc911x_findirq(unsigned long ioaddr) | |
1851 | { | |
1852 | int timeout = 20; | |
1853 | unsigned long cookie; | |
1854 | ||
1855 | DBG(SMC_DEBUG_FUNC, "--> %s\n", __FUNCTION__); | |
1856 | ||
1857 | cookie = probe_irq_on(); | |
1858 | ||
1859 | /* | |
1860 | * Force a SW interrupt | |
1861 | */ | |
1862 | ||
1863 | SMC_SET_INT_EN(INT_EN_SW_INT_EN_); | |
1864 | ||
1865 | /* | |
1866 | * Wait until positive that the interrupt has been generated | |
1867 | */ | |
1868 | do { | |
1869 | int int_status; | |
1870 | udelay(10); | |
1871 | int_status = SMC_GET_INT_EN(); | |
1872 | if (int_status & INT_EN_SW_INT_EN_) | |
1873 | break; /* got the interrupt */ | |
1874 | } while (--timeout); | |
1875 | ||
1876 | /* | |
1877 | * there is really nothing that I can do here if timeout fails, | |
1878 | * as autoirq_report will return a 0 anyway, which is what I | |
1879 | * want in this case. Plus, the clean up is needed in both | |
1880 | * cases. | |
1881 | */ | |
1882 | ||
1883 | /* and disable all interrupts again */ | |
1884 | SMC_SET_INT_EN(0); | |
1885 | ||
1886 | /* and return what I found */ | |
1887 | return probe_irq_off(cookie); | |
1888 | } | |
1889 | ||
1890 | /* | |
1891 | * Function: smc911x_probe(unsigned long ioaddr) | |
1892 | * | |
1893 | * Purpose: | |
1894 | * Tests to see if a given ioaddr points to an SMC911x chip. | |
1895 | * Returns a 0 on success | |
1896 | * | |
1897 | * Algorithm: | |
1898 | * (1) see if the endian word is OK | |
1899 | * (1) see if I recognize the chip ID in the appropriate register | |
1900 | * | |
1901 | * Here I do typical initialization tasks. | |
1902 | * | |
1903 | * o Initialize the structure if needed | |
1904 | * o print out my vanity message if not done so already | |
1905 | * o print out what type of hardware is detected | |
1906 | * o print out the ethernet address | |
1907 | * o find the IRQ | |
1908 | * o set up my private data | |
1909 | * o configure the dev structure with my subroutines | |
1910 | * o actually GRAB the irq. | |
1911 | * o GRAB the region | |
1912 | */ | |
1913 | static int __init smc911x_probe(struct net_device *dev, unsigned long ioaddr) | |
1914 | { | |
1915 | struct smc911x_local *lp = netdev_priv(dev); | |
1916 | int i, retval; | |
1917 | unsigned int val, chip_id, revision; | |
1918 | const char *version_string; | |
1919 | ||
1920 | DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __FUNCTION__); | |
1921 | ||
1922 | /* First, see if the endian word is recognized */ | |
1923 | val = SMC_GET_BYTE_TEST(); | |
1924 | DBG(SMC_DEBUG_MISC, "%s: endian probe returned 0x%04x\n", CARDNAME, val); | |
1925 | if (val != 0x87654321) { | |
1926 | printk(KERN_ERR "Invalid chip endian 0x08%x\n",val); | |
1927 | retval = -ENODEV; | |
1928 | goto err_out; | |
1929 | } | |
1930 | ||
1931 | /* | |
1932 | * check if the revision register is something that I | |
1933 | * recognize. These might need to be added to later, | |
1934 | * as future revisions could be added. | |
1935 | */ | |
1936 | chip_id = SMC_GET_PN(); | |
1937 | DBG(SMC_DEBUG_MISC, "%s: id probe returned 0x%04x\n", CARDNAME, chip_id); | |
1938 | for(i=0;chip_ids[i].id != 0; i++) { | |
1939 | if (chip_ids[i].id == chip_id) break; | |
1940 | } | |
1941 | if (!chip_ids[i].id) { | |
1942 | printk(KERN_ERR "Unknown chip ID %04x\n", chip_id); | |
1943 | retval = -ENODEV; | |
1944 | goto err_out; | |
1945 | } | |
1946 | version_string = chip_ids[i].name; | |
1947 | ||
1948 | revision = SMC_GET_REV(); | |
1949 | DBG(SMC_DEBUG_MISC, "%s: revision = 0x%04x\n", CARDNAME, revision); | |
1950 | ||
1951 | /* At this point I'll assume that the chip is an SMC911x. */ | |
1952 | DBG(SMC_DEBUG_MISC, "%s: Found a %s\n", CARDNAME, chip_ids[i].name); | |
1953 | ||
1954 | /* Validate the TX FIFO size requested */ | |
1955 | if ((tx_fifo_kb < 2) || (tx_fifo_kb > 14)) { | |
1956 | printk(KERN_ERR "Invalid TX FIFO size requested %d\n", tx_fifo_kb); | |
1957 | retval = -EINVAL; | |
1958 | goto err_out; | |
1959 | } | |
d5498bef | 1960 | |
0a0c72c9 DM |
1961 | /* fill in some of the fields */ |
1962 | dev->base_addr = ioaddr; | |
1963 | lp->version = chip_ids[i].id; | |
1964 | lp->revision = revision; | |
1965 | lp->tx_fifo_kb = tx_fifo_kb; | |
1966 | /* Reverse calculate the RX FIFO size from the TX */ | |
1967 | lp->tx_fifo_size=(lp->tx_fifo_kb<<10) - 512; | |
1968 | lp->rx_fifo_size= ((0x4000 - 512 - lp->tx_fifo_size) / 16) * 15; | |
1969 | ||
1970 | /* Set the automatic flow control values */ | |
1971 | switch(lp->tx_fifo_kb) { | |
d5498bef | 1972 | /* |
0a0c72c9 DM |
1973 | * AFC_HI is about ((Rx Data Fifo Size)*2/3)/64 |
1974 | * AFC_LO is AFC_HI/2 | |
1975 | * BACK_DUR is about 5uS*(AFC_LO) rounded down | |
1976 | */ | |
1977 | case 2:/* 13440 Rx Data Fifo Size */ | |
1978 | lp->afc_cfg=0x008C46AF;break; | |
1979 | case 3:/* 12480 Rx Data Fifo Size */ | |
1980 | lp->afc_cfg=0x0082419F;break; | |
1981 | case 4:/* 11520 Rx Data Fifo Size */ | |
1982 | lp->afc_cfg=0x00783C9F;break; | |
1983 | case 5:/* 10560 Rx Data Fifo Size */ | |
1984 | lp->afc_cfg=0x006E374F;break; | |
1985 | case 6:/* 9600 Rx Data Fifo Size */ | |
1986 | lp->afc_cfg=0x0064328F;break; | |
1987 | case 7:/* 8640 Rx Data Fifo Size */ | |
1988 | lp->afc_cfg=0x005A2D7F;break; | |
1989 | case 8:/* 7680 Rx Data Fifo Size */ | |
1990 | lp->afc_cfg=0x0050287F;break; | |
1991 | case 9:/* 6720 Rx Data Fifo Size */ | |
1992 | lp->afc_cfg=0x0046236F;break; | |
1993 | case 10:/* 5760 Rx Data Fifo Size */ | |
1994 | lp->afc_cfg=0x003C1E6F;break; | |
1995 | case 11:/* 4800 Rx Data Fifo Size */ | |
1996 | lp->afc_cfg=0x0032195F;break; | |
d5498bef | 1997 | /* |
0a0c72c9 DM |
1998 | * AFC_HI is ~1520 bytes less than RX Data Fifo Size |
1999 | * AFC_LO is AFC_HI/2 | |
2000 | * BACK_DUR is about 5uS*(AFC_LO) rounded down | |
2001 | */ | |
2002 | case 12:/* 3840 Rx Data Fifo Size */ | |
2003 | lp->afc_cfg=0x0024124F;break; | |
2004 | case 13:/* 2880 Rx Data Fifo Size */ | |
2005 | lp->afc_cfg=0x0015073F;break; | |
2006 | case 14:/* 1920 Rx Data Fifo Size */ | |
2007 | lp->afc_cfg=0x0006032F;break; | |
2008 | default: | |
d5498bef | 2009 | PRINTK("%s: ERROR -- no AFC_CFG setting found", |
0a0c72c9 DM |
2010 | dev->name); |
2011 | break; | |
2012 | } | |
2013 | ||
d5498bef JG |
2014 | DBG(SMC_DEBUG_MISC | SMC_DEBUG_TX | SMC_DEBUG_RX, |
2015 | "%s: tx_fifo %d rx_fifo %d afc_cfg 0x%08x\n", CARDNAME, | |
0a0c72c9 DM |
2016 | lp->tx_fifo_size, lp->rx_fifo_size, lp->afc_cfg); |
2017 | ||
2018 | spin_lock_init(&lp->lock); | |
2019 | ||
2020 | /* Get the MAC address */ | |
2021 | SMC_GET_MAC_ADDR(dev->dev_addr); | |
2022 | ||
2023 | /* now, reset the chip, and put it into a known state */ | |
2024 | smc911x_reset(dev); | |
2025 | ||
2026 | /* | |
2027 | * If dev->irq is 0, then the device has to be banged on to see | |
2028 | * what the IRQ is. | |
2029 | * | |
2030 | * Specifying an IRQ is done with the assumption that the user knows | |
2031 | * what (s)he is doing. No checking is done!!!! | |
2032 | */ | |
2033 | if (dev->irq < 1) { | |
2034 | int trials; | |
2035 | ||
2036 | trials = 3; | |
2037 | while (trials--) { | |
2038 | dev->irq = smc911x_findirq(ioaddr); | |
2039 | if (dev->irq) | |
2040 | break; | |
2041 | /* kick the card and try again */ | |
2042 | smc911x_reset(dev); | |
2043 | } | |
2044 | } | |
2045 | if (dev->irq == 0) { | |
2046 | printk("%s: Couldn't autodetect your IRQ. Use irq=xx.\n", | |
2047 | dev->name); | |
2048 | retval = -ENODEV; | |
2049 | goto err_out; | |
2050 | } | |
2051 | dev->irq = irq_canonicalize(dev->irq); | |
2052 | ||
2053 | /* Fill in the fields of the device structure with ethernet values. */ | |
2054 | ether_setup(dev); | |
2055 | ||
2056 | dev->open = smc911x_open; | |
2057 | dev->stop = smc911x_close; | |
2058 | dev->hard_start_xmit = smc911x_hard_start_xmit; | |
2059 | dev->tx_timeout = smc911x_timeout; | |
2060 | dev->watchdog_timeo = msecs_to_jiffies(watchdog); | |
2061 | dev->get_stats = smc911x_query_statistics; | |
2062 | dev->set_multicast_list = smc911x_set_multicast_list; | |
2063 | dev->ethtool_ops = &smc911x_ethtool_ops; | |
2064 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2065 | dev->poll_controller = smc911x_poll_controller; | |
2066 | #endif | |
2067 | ||
ef8142a5 | 2068 | INIT_WORK(&lp->phy_configure, smc911x_phy_configure); |
0a0c72c9 DM |
2069 | lp->mii.phy_id_mask = 0x1f; |
2070 | lp->mii.reg_num_mask = 0x1f; | |
2071 | lp->mii.force_media = 0; | |
2072 | lp->mii.full_duplex = 0; | |
2073 | lp->mii.dev = dev; | |
2074 | lp->mii.mdio_read = smc911x_phy_read; | |
2075 | lp->mii.mdio_write = smc911x_phy_write; | |
2076 | ||
2077 | /* | |
2078 | * Locate the phy, if any. | |
2079 | */ | |
2080 | smc911x_phy_detect(dev); | |
2081 | ||
2082 | /* Set default parameters */ | |
2083 | lp->msg_enable = NETIF_MSG_LINK; | |
2084 | lp->ctl_rfduplx = 1; | |
2085 | lp->ctl_rspeed = 100; | |
2086 | ||
2087 | /* Grab the IRQ */ | |
1fb9df5d | 2088 | retval = request_irq(dev->irq, &smc911x_interrupt, IRQF_SHARED, dev->name, dev); |
0a0c72c9 DM |
2089 | if (retval) |
2090 | goto err_out; | |
2091 | ||
2092 | set_irq_type(dev->irq, IRQT_FALLING); | |
2093 | ||
2094 | #ifdef SMC_USE_DMA | |
2095 | lp->rxdma = SMC_DMA_REQUEST(dev, smc911x_rx_dma_irq); | |
2096 | lp->txdma = SMC_DMA_REQUEST(dev, smc911x_tx_dma_irq); | |
2097 | lp->rxdma_active = 0; | |
2098 | lp->txdma_active = 0; | |
2099 | dev->dma = lp->rxdma; | |
2100 | #endif | |
2101 | ||
2102 | retval = register_netdev(dev); | |
2103 | if (retval == 0) { | |
2104 | /* now, print out the card info, in a short format.. */ | |
2105 | printk("%s: %s (rev %d) at %#lx IRQ %d", | |
2106 | dev->name, version_string, lp->revision, | |
2107 | dev->base_addr, dev->irq); | |
2108 | ||
2109 | #ifdef SMC_USE_DMA | |
2110 | if (lp->rxdma != -1) | |
2111 | printk(" RXDMA %d ", lp->rxdma); | |
2112 | ||
2113 | if (lp->txdma != -1) | |
2114 | printk("TXDMA %d", lp->txdma); | |
2115 | #endif | |
2116 | printk("\n"); | |
2117 | if (!is_valid_ether_addr(dev->dev_addr)) { | |
2118 | printk("%s: Invalid ethernet MAC address. Please " | |
2119 | "set using ifconfig\n", dev->name); | |
2120 | } else { | |
2121 | /* Print the Ethernet address */ | |
2122 | printk("%s: Ethernet addr: ", dev->name); | |
2123 | for (i = 0; i < 5; i++) | |
2124 | printk("%2.2x:", dev->dev_addr[i]); | |
2125 | printk("%2.2x\n", dev->dev_addr[5]); | |
2126 | } | |
2127 | ||
2128 | if (lp->phy_type == 0) { | |
2129 | PRINTK("%s: No PHY found\n", dev->name); | |
2130 | } else if ((lp->phy_type & ~0xff) == LAN911X_INTERNAL_PHY_ID) { | |
2131 | PRINTK("%s: LAN911x Internal PHY\n", dev->name); | |
2132 | } else { | |
2133 | PRINTK("%s: External PHY 0x%08x\n", dev->name, lp->phy_type); | |
2134 | } | |
2135 | } | |
d5498bef | 2136 | |
0a0c72c9 DM |
2137 | err_out: |
2138 | #ifdef SMC_USE_DMA | |
2139 | if (retval) { | |
2140 | 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 | |
2148 | return retval; | |
2149 | } | |
2150 | ||
2151 | /* | |
2152 | * smc911x_init(void) | |
2153 | * | |
2154 | * Output: | |
2155 | * 0 --> there is a device | |
2156 | * anything else, error | |
2157 | */ | |
2158 | static int smc911x_drv_probe(struct platform_device *pdev) | |
2159 | { | |
2160 | struct net_device *ndev; | |
2161 | struct resource *res; | |
ef8142a5 | 2162 | struct smc911x_local *lp; |
0a0c72c9 DM |
2163 | unsigned int *addr; |
2164 | int ret; | |
2165 | ||
2166 | DBG(SMC_DEBUG_FUNC, "--> %s\n", __FUNCTION__); | |
2167 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
2168 | if (!res) { | |
2169 | ret = -ENODEV; | |
2170 | goto out; | |
2171 | } | |
2172 | ||
2173 | /* | |
2174 | * Request the regions. | |
2175 | */ | |
2176 | if (!request_mem_region(res->start, SMC911X_IO_EXTENT, CARDNAME)) { | |
2177 | ret = -EBUSY; | |
2178 | goto out; | |
2179 | } | |
2180 | ||
2181 | ndev = alloc_etherdev(sizeof(struct smc911x_local)); | |
2182 | if (!ndev) { | |
2183 | printk("%s: could not allocate device.\n", CARDNAME); | |
2184 | ret = -ENOMEM; | |
2185 | goto release_1; | |
2186 | } | |
2187 | SET_MODULE_OWNER(ndev); | |
2188 | SET_NETDEV_DEV(ndev, &pdev->dev); | |
2189 | ||
2190 | ndev->dma = (unsigned char)-1; | |
2191 | ndev->irq = platform_get_irq(pdev, 0); | |
ef8142a5 AM |
2192 | lp = netdev_priv(ndev); |
2193 | lp->netdev = ndev; | |
0a0c72c9 DM |
2194 | |
2195 | addr = ioremap(res->start, SMC911X_IO_EXTENT); | |
2196 | if (!addr) { | |
2197 | ret = -ENOMEM; | |
2198 | goto release_both; | |
2199 | } | |
2200 | ||
2201 | platform_set_drvdata(pdev, ndev); | |
2202 | ret = smc911x_probe(ndev, (unsigned long)addr); | |
2203 | if (ret != 0) { | |
2204 | platform_set_drvdata(pdev, NULL); | |
2205 | iounmap(addr); | |
2206 | release_both: | |
2207 | free_netdev(ndev); | |
2208 | release_1: | |
2209 | release_mem_region(res->start, SMC911X_IO_EXTENT); | |
2210 | out: | |
2211 | printk("%s: not found (%d).\n", CARDNAME, ret); | |
2212 | } | |
2213 | #ifdef SMC_USE_DMA | |
2214 | else { | |
0a0c72c9 DM |
2215 | lp->physaddr = res->start; |
2216 | lp->dev = &pdev->dev; | |
2217 | } | |
2218 | #endif | |
2219 | ||
2220 | return ret; | |
2221 | } | |
2222 | ||
2223 | static int smc911x_drv_remove(struct platform_device *pdev) | |
2224 | { | |
2225 | struct net_device *ndev = platform_get_drvdata(pdev); | |
2226 | struct resource *res; | |
2227 | ||
2228 | DBG(SMC_DEBUG_FUNC, "--> %s\n", __FUNCTION__); | |
2229 | platform_set_drvdata(pdev, NULL); | |
2230 | ||
2231 | unregister_netdev(ndev); | |
2232 | ||
2233 | free_irq(ndev->irq, ndev); | |
2234 | ||
2235 | #ifdef SMC_USE_DMA | |
2236 | { | |
2237 | struct smc911x_local *lp = netdev_priv(ndev); | |
2238 | if (lp->rxdma != -1) { | |
2239 | SMC_DMA_FREE(dev, lp->rxdma); | |
2240 | } | |
2241 | if (lp->txdma != -1) { | |
2242 | SMC_DMA_FREE(dev, lp->txdma); | |
2243 | } | |
2244 | } | |
2245 | #endif | |
2246 | iounmap((void *)ndev->base_addr); | |
2247 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
2248 | release_mem_region(res->start, SMC911X_IO_EXTENT); | |
2249 | ||
2250 | free_netdev(ndev); | |
2251 | return 0; | |
2252 | } | |
2253 | ||
2254 | static int smc911x_drv_suspend(struct platform_device *dev, pm_message_t state) | |
2255 | { | |
2256 | struct net_device *ndev = platform_get_drvdata(dev); | |
2257 | unsigned long ioaddr = ndev->base_addr; | |
2258 | ||
2259 | DBG(SMC_DEBUG_FUNC, "--> %s\n", __FUNCTION__); | |
2260 | if (ndev) { | |
2261 | if (netif_running(ndev)) { | |
2262 | netif_device_detach(ndev); | |
2263 | smc911x_shutdown(ndev); | |
2264 | #if POWER_DOWN | |
2265 | /* Set D2 - Energy detect only setting */ | |
2266 | SMC_SET_PMT_CTRL(2<<12); | |
2267 | #endif | |
2268 | } | |
2269 | } | |
2270 | return 0; | |
2271 | } | |
2272 | ||
2273 | static int smc911x_drv_resume(struct platform_device *dev) | |
2274 | { | |
2275 | struct net_device *ndev = platform_get_drvdata(dev); | |
2276 | ||
2277 | DBG(SMC_DEBUG_FUNC, "--> %s\n", __FUNCTION__); | |
2278 | if (ndev) { | |
2279 | struct smc911x_local *lp = netdev_priv(ndev); | |
2280 | ||
2281 | if (netif_running(ndev)) { | |
2282 | smc911x_reset(ndev); | |
2283 | smc911x_enable(ndev); | |
2284 | if (lp->phy_type != 0) | |
ef8142a5 | 2285 | smc911x_phy_configure(&lp->phy_configure); |
0a0c72c9 DM |
2286 | netif_device_attach(ndev); |
2287 | } | |
2288 | } | |
2289 | return 0; | |
2290 | } | |
2291 | ||
2292 | static struct platform_driver smc911x_driver = { | |
2293 | .probe = smc911x_drv_probe, | |
2294 | .remove = smc911x_drv_remove, | |
2295 | .suspend = smc911x_drv_suspend, | |
2296 | .resume = smc911x_drv_resume, | |
2297 | .driver = { | |
2298 | .name = CARDNAME, | |
2299 | }, | |
2300 | }; | |
d5498bef | 2301 | |
0a0c72c9 DM |
2302 | static int __init smc911x_init(void) |
2303 | { | |
2304 | return platform_driver_register(&smc911x_driver); | |
2305 | } | |
2306 | ||
2307 | static void __exit smc911x_cleanup(void) | |
2308 | { | |
2309 | platform_driver_unregister(&smc911x_driver); | |
2310 | } | |
2311 | ||
2312 | module_init(smc911x_init); | |
2313 | module_exit(smc911x_cleanup); |