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1da177e4 LT |
1 | /* |
2 | * smc91x.c | |
3 | * This is a driver for SMSC's 91C9x/91C1xx single-chip Ethernet devices. | |
4 | * | |
5 | * Copyright (C) 1996 by Erik Stahlman | |
6 | * Copyright (C) 2001 Standard Microsystems Corporation | |
7 | * Developed by Simple Network Magic Corporation | |
8 | * Copyright (C) 2003 Monta Vista Software, Inc. | |
9 | * Unified SMC91x driver by Nicolas Pitre | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; either version 2 of the License, or | |
14 | * (at your option) any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | * GNU General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
24 | * | |
25 | * Arguments: | |
26 | * io = for the base address | |
27 | * irq = for the IRQ | |
28 | * nowait = 0 for normal wait states, 1 eliminates additional wait states | |
29 | * | |
30 | * original author: | |
31 | * Erik Stahlman <erik@vt.edu> | |
32 | * | |
33 | * hardware multicast code: | |
34 | * Peter Cammaert <pc@denkart.be> | |
35 | * | |
36 | * contributors: | |
37 | * Daris A Nevil <dnevil@snmc.com> | |
38 | * Nicolas Pitre <nico@cam.org> | |
39 | * Russell King <rmk@arm.linux.org.uk> | |
40 | * | |
41 | * History: | |
42 | * 08/20/00 Arnaldo Melo fix kfree(skb) in smc_hardware_send_packet | |
43 | * 12/15/00 Christian Jullien fix "Warning: kfree_skb on hard IRQ" | |
44 | * 03/16/01 Daris A Nevil modified smc9194.c for use with LAN91C111 | |
45 | * 08/22/01 Scott Anderson merge changes from smc9194 to smc91111 | |
46 | * 08/21/01 Pramod B Bhardwaj added support for RevB of LAN91C111 | |
47 | * 12/20/01 Jeff Sutherland initial port to Xscale PXA with DMA support | |
48 | * 04/07/03 Nicolas Pitre unified SMC91x driver, killed irq races, | |
49 | * more bus abstraction, big cleanup, etc. | |
50 | * 29/09/03 Russell King - add driver model support | |
51 | * - ethtool support | |
52 | * - convert to use generic MII interface | |
53 | * - add link up/down notification | |
54 | * - don't try to handle full negotiation in | |
55 | * smc_phy_configure | |
56 | * - clean up (and fix stack overrun) in PHY | |
57 | * MII read/write functions | |
58 | * 22/09/04 Nicolas Pitre big update (see commit log for details) | |
59 | */ | |
60 | static const char version[] = | |
61 | "smc91x.c: v1.1, sep 22 2004 by Nicolas Pitre <nico@cam.org>\n"; | |
62 | ||
63 | /* Debugging level */ | |
64 | #ifndef SMC_DEBUG | |
65 | #define SMC_DEBUG 0 | |
66 | #endif | |
67 | ||
68 | ||
69 | #include <linux/config.h> | |
70 | #include <linux/init.h> | |
71 | #include <linux/module.h> | |
72 | #include <linux/kernel.h> | |
73 | #include <linux/sched.h> | |
74 | #include <linux/slab.h> | |
75 | #include <linux/delay.h> | |
76 | #include <linux/interrupt.h> | |
77 | #include <linux/errno.h> | |
78 | #include <linux/ioport.h> | |
79 | #include <linux/crc32.h> | |
d052d1be | 80 | #include <linux/platform_device.h> |
1da177e4 LT |
81 | #include <linux/spinlock.h> |
82 | #include <linux/ethtool.h> | |
83 | #include <linux/mii.h> | |
84 | #include <linux/workqueue.h> | |
85 | ||
86 | #include <linux/netdevice.h> | |
87 | #include <linux/etherdevice.h> | |
88 | #include <linux/skbuff.h> | |
89 | ||
90 | #include <asm/io.h> | |
91 | #include <asm/irq.h> | |
92 | ||
93 | #include "smc91x.h" | |
94 | ||
95 | #ifdef CONFIG_ISA | |
96 | /* | |
97 | * the LAN91C111 can be at any of the following port addresses. To change, | |
98 | * for a slightly different card, you can add it to the array. Keep in | |
99 | * mind that the array must end in zero. | |
100 | */ | |
101 | static unsigned int smc_portlist[] __initdata = { | |
102 | 0x200, 0x220, 0x240, 0x260, 0x280, 0x2A0, 0x2C0, 0x2E0, | |
103 | 0x300, 0x320, 0x340, 0x360, 0x380, 0x3A0, 0x3C0, 0x3E0, 0 | |
104 | }; | |
105 | ||
106 | #ifndef SMC_IOADDR | |
107 | # define SMC_IOADDR -1 | |
108 | #endif | |
109 | static unsigned long io = SMC_IOADDR; | |
110 | module_param(io, ulong, 0400); | |
111 | MODULE_PARM_DESC(io, "I/O base address"); | |
112 | ||
113 | #ifndef SMC_IRQ | |
114 | # define SMC_IRQ -1 | |
115 | #endif | |
116 | static int irq = SMC_IRQ; | |
117 | module_param(irq, int, 0400); | |
118 | MODULE_PARM_DESC(irq, "IRQ number"); | |
119 | ||
120 | #endif /* CONFIG_ISA */ | |
121 | ||
122 | #ifndef SMC_NOWAIT | |
123 | # define SMC_NOWAIT 0 | |
124 | #endif | |
125 | static int nowait = SMC_NOWAIT; | |
126 | module_param(nowait, int, 0400); | |
127 | MODULE_PARM_DESC(nowait, "set to 1 for no wait state"); | |
128 | ||
129 | /* | |
130 | * Transmit timeout, default 5 seconds. | |
131 | */ | |
ea937560 | 132 | static int watchdog = 1000; |
1da177e4 LT |
133 | module_param(watchdog, int, 0400); |
134 | MODULE_PARM_DESC(watchdog, "transmit timeout in milliseconds"); | |
135 | ||
136 | MODULE_LICENSE("GPL"); | |
137 | ||
138 | /* | |
139 | * The internal workings of the driver. If you are changing anything | |
140 | * here with the SMC stuff, you should have the datasheet and know | |
141 | * what you are doing. | |
142 | */ | |
143 | #define CARDNAME "smc91x" | |
144 | ||
145 | /* | |
146 | * Use power-down feature of the chip | |
147 | */ | |
148 | #define POWER_DOWN 1 | |
149 | ||
150 | /* | |
151 | * Wait time for memory to be free. This probably shouldn't be | |
152 | * tuned that much, as waiting for this means nothing else happens | |
153 | * in the system | |
154 | */ | |
155 | #define MEMORY_WAIT_TIME 16 | |
156 | ||
5d0571d9 NP |
157 | /* |
158 | * The maximum number of processing loops allowed for each call to the | |
159 | * IRQ handler. | |
160 | */ | |
161 | #define MAX_IRQ_LOOPS 8 | |
162 | ||
1da177e4 LT |
163 | /* |
164 | * This selects whether TX packets are sent one by one to the SMC91x internal | |
165 | * memory and throttled until transmission completes. This may prevent | |
166 | * RX overruns a litle by keeping much of the memory free for RX packets | |
167 | * but to the expense of reduced TX throughput and increased IRQ overhead. | |
168 | * Note this is not a cure for a too slow data bus or too high IRQ latency. | |
169 | */ | |
170 | #define THROTTLE_TX_PKTS 0 | |
171 | ||
172 | /* | |
173 | * The MII clock high/low times. 2x this number gives the MII clock period | |
174 | * in microseconds. (was 50, but this gives 6.4ms for each MII transaction!) | |
175 | */ | |
176 | #define MII_DELAY 1 | |
177 | ||
178 | /* store this information for the driver.. */ | |
179 | struct smc_local { | |
180 | /* | |
181 | * If I have to wait until memory is available to send a | |
182 | * packet, I will store the skbuff here, until I get the | |
183 | * desired memory. Then, I'll send it out and free it. | |
184 | */ | |
185 | struct sk_buff *pending_tx_skb; | |
186 | struct tasklet_struct tx_task; | |
187 | ||
188 | /* | |
189 | * these are things that the kernel wants me to keep, so users | |
190 | * can find out semi-useless statistics of how well the card is | |
191 | * performing | |
192 | */ | |
193 | struct net_device_stats stats; | |
194 | ||
195 | /* version/revision of the SMC91x chip */ | |
196 | int version; | |
197 | ||
198 | /* Contains the current active transmission mode */ | |
199 | int tcr_cur_mode; | |
200 | ||
201 | /* Contains the current active receive mode */ | |
202 | int rcr_cur_mode; | |
203 | ||
204 | /* Contains the current active receive/phy mode */ | |
205 | int rpc_cur_mode; | |
206 | int ctl_rfduplx; | |
207 | int ctl_rspeed; | |
208 | ||
209 | u32 msg_enable; | |
210 | u32 phy_type; | |
211 | struct mii_if_info mii; | |
212 | ||
213 | /* work queue */ | |
214 | struct work_struct phy_configure; | |
215 | int work_pending; | |
216 | ||
217 | spinlock_t lock; | |
218 | ||
219 | #ifdef SMC_CAN_USE_DATACS | |
220 | u32 __iomem *datacs; | |
221 | #endif | |
222 | ||
223 | #ifdef SMC_USE_PXA_DMA | |
224 | /* DMA needs the physical address of the chip */ | |
225 | u_long physaddr; | |
226 | #endif | |
227 | void __iomem *base; | |
228 | }; | |
229 | ||
230 | #if SMC_DEBUG > 0 | |
231 | #define DBG(n, args...) \ | |
232 | do { \ | |
233 | if (SMC_DEBUG >= (n)) \ | |
234 | printk(args); \ | |
235 | } while (0) | |
236 | ||
237 | #define PRINTK(args...) printk(args) | |
238 | #else | |
239 | #define DBG(n, args...) do { } while(0) | |
240 | #define PRINTK(args...) printk(KERN_DEBUG args) | |
241 | #endif | |
242 | ||
243 | #if SMC_DEBUG > 3 | |
244 | static void PRINT_PKT(u_char *buf, int length) | |
245 | { | |
246 | int i; | |
247 | int remainder; | |
248 | int lines; | |
249 | ||
250 | lines = length / 16; | |
251 | remainder = length % 16; | |
252 | ||
253 | for (i = 0; i < lines ; i ++) { | |
254 | int cur; | |
255 | for (cur = 0; cur < 8; cur++) { | |
256 | u_char a, b; | |
257 | a = *buf++; | |
258 | b = *buf++; | |
259 | printk("%02x%02x ", a, b); | |
260 | } | |
261 | printk("\n"); | |
262 | } | |
263 | for (i = 0; i < remainder/2 ; i++) { | |
264 | u_char a, b; | |
265 | a = *buf++; | |
266 | b = *buf++; | |
267 | printk("%02x%02x ", a, b); | |
268 | } | |
269 | printk("\n"); | |
270 | } | |
271 | #else | |
272 | #define PRINT_PKT(x...) do { } while(0) | |
273 | #endif | |
274 | ||
275 | ||
276 | /* this enables an interrupt in the interrupt mask register */ | |
277 | #define SMC_ENABLE_INT(x) do { \ | |
278 | unsigned char mask; \ | |
279 | spin_lock_irq(&lp->lock); \ | |
280 | mask = SMC_GET_INT_MASK(); \ | |
281 | mask |= (x); \ | |
282 | SMC_SET_INT_MASK(mask); \ | |
283 | spin_unlock_irq(&lp->lock); \ | |
284 | } while (0) | |
285 | ||
286 | /* this disables an interrupt from the interrupt mask register */ | |
287 | #define SMC_DISABLE_INT(x) do { \ | |
288 | unsigned char mask; \ | |
289 | spin_lock_irq(&lp->lock); \ | |
290 | mask = SMC_GET_INT_MASK(); \ | |
291 | mask &= ~(x); \ | |
292 | SMC_SET_INT_MASK(mask); \ | |
293 | spin_unlock_irq(&lp->lock); \ | |
294 | } while (0) | |
295 | ||
296 | /* | |
297 | * Wait while MMU is busy. This is usually in the order of a few nanosecs | |
298 | * if at all, but let's avoid deadlocking the system if the hardware | |
299 | * decides to go south. | |
300 | */ | |
301 | #define SMC_WAIT_MMU_BUSY() do { \ | |
302 | if (unlikely(SMC_GET_MMU_CMD() & MC_BUSY)) { \ | |
303 | unsigned long timeout = jiffies + 2; \ | |
304 | while (SMC_GET_MMU_CMD() & MC_BUSY) { \ | |
305 | if (time_after(jiffies, timeout)) { \ | |
306 | printk("%s: timeout %s line %d\n", \ | |
307 | dev->name, __FILE__, __LINE__); \ | |
308 | break; \ | |
309 | } \ | |
310 | cpu_relax(); \ | |
311 | } \ | |
312 | } \ | |
313 | } while (0) | |
314 | ||
315 | ||
316 | /* | |
317 | * this does a soft reset on the device | |
318 | */ | |
319 | static void smc_reset(struct net_device *dev) | |
320 | { | |
321 | struct smc_local *lp = netdev_priv(dev); | |
322 | void __iomem *ioaddr = lp->base; | |
323 | unsigned int ctl, cfg; | |
be83668a | 324 | struct sk_buff *pending_skb; |
1da177e4 LT |
325 | |
326 | DBG(2, "%s: %s\n", dev->name, __FUNCTION__); | |
327 | ||
be83668a | 328 | /* Disable all interrupts, block TX tasklet */ |
1da177e4 LT |
329 | spin_lock(&lp->lock); |
330 | SMC_SELECT_BANK(2); | |
331 | SMC_SET_INT_MASK(0); | |
be83668a NP |
332 | pending_skb = lp->pending_tx_skb; |
333 | lp->pending_tx_skb = NULL; | |
1da177e4 LT |
334 | spin_unlock(&lp->lock); |
335 | ||
be83668a NP |
336 | /* free any pending tx skb */ |
337 | if (pending_skb) { | |
338 | dev_kfree_skb(pending_skb); | |
339 | lp->stats.tx_errors++; | |
340 | lp->stats.tx_aborted_errors++; | |
341 | } | |
342 | ||
1da177e4 LT |
343 | /* |
344 | * This resets the registers mostly to defaults, but doesn't | |
345 | * affect EEPROM. That seems unnecessary | |
346 | */ | |
347 | SMC_SELECT_BANK(0); | |
348 | SMC_SET_RCR(RCR_SOFTRST); | |
349 | ||
350 | /* | |
351 | * Setup the Configuration Register | |
352 | * This is necessary because the CONFIG_REG is not affected | |
353 | * by a soft reset | |
354 | */ | |
355 | SMC_SELECT_BANK(1); | |
356 | ||
357 | cfg = CONFIG_DEFAULT; | |
358 | ||
359 | /* | |
360 | * Setup for fast accesses if requested. If the card/system | |
361 | * can't handle it then there will be no recovery except for | |
362 | * a hard reset or power cycle | |
363 | */ | |
364 | if (nowait) | |
365 | cfg |= CONFIG_NO_WAIT; | |
366 | ||
367 | /* | |
368 | * Release from possible power-down state | |
369 | * Configuration register is not affected by Soft Reset | |
370 | */ | |
371 | cfg |= CONFIG_EPH_POWER_EN; | |
372 | ||
373 | SMC_SET_CONFIG(cfg); | |
374 | ||
375 | /* this should pause enough for the chip to be happy */ | |
376 | /* | |
377 | * elaborate? What does the chip _need_? --jgarzik | |
378 | * | |
379 | * This seems to be undocumented, but something the original | |
380 | * driver(s) have always done. Suspect undocumented timing | |
381 | * info/determined empirically. --rmk | |
382 | */ | |
383 | udelay(1); | |
384 | ||
385 | /* Disable transmit and receive functionality */ | |
386 | SMC_SELECT_BANK(0); | |
387 | SMC_SET_RCR(RCR_CLEAR); | |
388 | SMC_SET_TCR(TCR_CLEAR); | |
389 | ||
390 | SMC_SELECT_BANK(1); | |
391 | ctl = SMC_GET_CTL() | CTL_LE_ENABLE; | |
392 | ||
393 | /* | |
394 | * Set the control register to automatically release successfully | |
395 | * transmitted packets, to make the best use out of our limited | |
396 | * memory | |
397 | */ | |
398 | if(!THROTTLE_TX_PKTS) | |
399 | ctl |= CTL_AUTO_RELEASE; | |
400 | else | |
401 | ctl &= ~CTL_AUTO_RELEASE; | |
402 | SMC_SET_CTL(ctl); | |
403 | ||
404 | /* Reset the MMU */ | |
405 | SMC_SELECT_BANK(2); | |
406 | SMC_SET_MMU_CMD(MC_RESET); | |
407 | SMC_WAIT_MMU_BUSY(); | |
1da177e4 LT |
408 | } |
409 | ||
410 | /* | |
411 | * Enable Interrupts, Receive, and Transmit | |
412 | */ | |
413 | static void smc_enable(struct net_device *dev) | |
414 | { | |
415 | struct smc_local *lp = netdev_priv(dev); | |
416 | void __iomem *ioaddr = lp->base; | |
417 | int mask; | |
418 | ||
419 | DBG(2, "%s: %s\n", dev->name, __FUNCTION__); | |
420 | ||
421 | /* see the header file for options in TCR/RCR DEFAULT */ | |
422 | SMC_SELECT_BANK(0); | |
423 | SMC_SET_TCR(lp->tcr_cur_mode); | |
424 | SMC_SET_RCR(lp->rcr_cur_mode); | |
425 | ||
426 | SMC_SELECT_BANK(1); | |
427 | SMC_SET_MAC_ADDR(dev->dev_addr); | |
428 | ||
429 | /* now, enable interrupts */ | |
430 | mask = IM_EPH_INT|IM_RX_OVRN_INT|IM_RCV_INT; | |
431 | if (lp->version >= (CHIP_91100 << 4)) | |
432 | mask |= IM_MDINT; | |
433 | SMC_SELECT_BANK(2); | |
434 | SMC_SET_INT_MASK(mask); | |
435 | ||
436 | /* | |
437 | * From this point the register bank must _NOT_ be switched away | |
438 | * to something else than bank 2 without proper locking against | |
439 | * races with any tasklet or interrupt handlers until smc_shutdown() | |
440 | * or smc_reset() is called. | |
441 | */ | |
442 | } | |
443 | ||
444 | /* | |
445 | * this puts the device in an inactive state | |
446 | */ | |
447 | static void smc_shutdown(struct net_device *dev) | |
448 | { | |
449 | struct smc_local *lp = netdev_priv(dev); | |
450 | void __iomem *ioaddr = lp->base; | |
be83668a | 451 | struct sk_buff *pending_skb; |
1da177e4 LT |
452 | |
453 | DBG(2, "%s: %s\n", CARDNAME, __FUNCTION__); | |
454 | ||
455 | /* no more interrupts for me */ | |
456 | spin_lock(&lp->lock); | |
457 | SMC_SELECT_BANK(2); | |
458 | SMC_SET_INT_MASK(0); | |
be83668a NP |
459 | pending_skb = lp->pending_tx_skb; |
460 | lp->pending_tx_skb = NULL; | |
1da177e4 | 461 | spin_unlock(&lp->lock); |
be83668a NP |
462 | if (pending_skb) |
463 | dev_kfree_skb(pending_skb); | |
1da177e4 LT |
464 | |
465 | /* and tell the card to stay away from that nasty outside world */ | |
466 | SMC_SELECT_BANK(0); | |
467 | SMC_SET_RCR(RCR_CLEAR); | |
468 | SMC_SET_TCR(TCR_CLEAR); | |
469 | ||
470 | #ifdef POWER_DOWN | |
471 | /* finally, shut the chip down */ | |
472 | SMC_SELECT_BANK(1); | |
473 | SMC_SET_CONFIG(SMC_GET_CONFIG() & ~CONFIG_EPH_POWER_EN); | |
474 | #endif | |
475 | } | |
476 | ||
477 | /* | |
478 | * This is the procedure to handle the receipt of a packet. | |
479 | */ | |
480 | static inline void smc_rcv(struct net_device *dev) | |
481 | { | |
482 | struct smc_local *lp = netdev_priv(dev); | |
483 | void __iomem *ioaddr = lp->base; | |
484 | unsigned int packet_number, status, packet_len; | |
485 | ||
486 | DBG(3, "%s: %s\n", dev->name, __FUNCTION__); | |
487 | ||
488 | packet_number = SMC_GET_RXFIFO(); | |
489 | if (unlikely(packet_number & RXFIFO_REMPTY)) { | |
490 | PRINTK("%s: smc_rcv with nothing on FIFO.\n", dev->name); | |
491 | return; | |
492 | } | |
493 | ||
494 | /* read from start of packet */ | |
495 | SMC_SET_PTR(PTR_READ | PTR_RCV | PTR_AUTOINC); | |
496 | ||
497 | /* First two words are status and packet length */ | |
498 | SMC_GET_PKT_HDR(status, packet_len); | |
499 | packet_len &= 0x07ff; /* mask off top bits */ | |
500 | DBG(2, "%s: RX PNR 0x%x STATUS 0x%04x LENGTH 0x%04x (%d)\n", | |
501 | dev->name, packet_number, status, | |
502 | packet_len, packet_len); | |
503 | ||
504 | back: | |
505 | if (unlikely(packet_len < 6 || status & RS_ERRORS)) { | |
506 | if (status & RS_TOOLONG && packet_len <= (1514 + 4 + 6)) { | |
507 | /* accept VLAN packets */ | |
508 | status &= ~RS_TOOLONG; | |
509 | goto back; | |
510 | } | |
511 | if (packet_len < 6) { | |
512 | /* bloody hardware */ | |
513 | printk(KERN_ERR "%s: fubar (rxlen %u status %x\n", | |
514 | dev->name, packet_len, status); | |
515 | status |= RS_TOOSHORT; | |
516 | } | |
517 | SMC_WAIT_MMU_BUSY(); | |
518 | SMC_SET_MMU_CMD(MC_RELEASE); | |
519 | lp->stats.rx_errors++; | |
520 | if (status & RS_ALGNERR) | |
521 | lp->stats.rx_frame_errors++; | |
522 | if (status & (RS_TOOSHORT | RS_TOOLONG)) | |
523 | lp->stats.rx_length_errors++; | |
524 | if (status & RS_BADCRC) | |
525 | lp->stats.rx_crc_errors++; | |
526 | } else { | |
527 | struct sk_buff *skb; | |
528 | unsigned char *data; | |
529 | unsigned int data_len; | |
530 | ||
531 | /* set multicast stats */ | |
532 | if (status & RS_MULTICAST) | |
533 | lp->stats.multicast++; | |
534 | ||
535 | /* | |
536 | * Actual payload is packet_len - 6 (or 5 if odd byte). | |
537 | * We want skb_reserve(2) and the final ctrl word | |
538 | * (2 bytes, possibly containing the payload odd byte). | |
539 | * Furthermore, we add 2 bytes to allow rounding up to | |
540 | * multiple of 4 bytes on 32 bit buses. | |
541 | * Hence packet_len - 6 + 2 + 2 + 2. | |
542 | */ | |
543 | skb = dev_alloc_skb(packet_len); | |
544 | if (unlikely(skb == NULL)) { | |
545 | printk(KERN_NOTICE "%s: Low memory, packet dropped.\n", | |
546 | dev->name); | |
547 | SMC_WAIT_MMU_BUSY(); | |
548 | SMC_SET_MMU_CMD(MC_RELEASE); | |
549 | lp->stats.rx_dropped++; | |
550 | return; | |
551 | } | |
552 | ||
553 | /* Align IP header to 32 bits */ | |
554 | skb_reserve(skb, 2); | |
555 | ||
556 | /* BUG: the LAN91C111 rev A never sets this bit. Force it. */ | |
557 | if (lp->version == 0x90) | |
558 | status |= RS_ODDFRAME; | |
559 | ||
560 | /* | |
561 | * If odd length: packet_len - 5, | |
562 | * otherwise packet_len - 6. | |
563 | * With the trailing ctrl byte it's packet_len - 4. | |
564 | */ | |
565 | data_len = packet_len - ((status & RS_ODDFRAME) ? 5 : 6); | |
566 | data = skb_put(skb, data_len); | |
567 | SMC_PULL_DATA(data, packet_len - 4); | |
568 | ||
569 | SMC_WAIT_MMU_BUSY(); | |
570 | SMC_SET_MMU_CMD(MC_RELEASE); | |
571 | ||
572 | PRINT_PKT(data, packet_len - 4); | |
573 | ||
574 | dev->last_rx = jiffies; | |
575 | skb->dev = dev; | |
576 | skb->protocol = eth_type_trans(skb, dev); | |
577 | netif_rx(skb); | |
578 | lp->stats.rx_packets++; | |
579 | lp->stats.rx_bytes += data_len; | |
580 | } | |
581 | } | |
582 | ||
583 | #ifdef CONFIG_SMP | |
584 | /* | |
585 | * On SMP we have the following problem: | |
586 | * | |
587 | * A = smc_hardware_send_pkt() | |
588 | * B = smc_hard_start_xmit() | |
589 | * C = smc_interrupt() | |
590 | * | |
591 | * A and B can never be executed simultaneously. However, at least on UP, | |
592 | * it is possible (and even desirable) for C to interrupt execution of | |
593 | * A or B in order to have better RX reliability and avoid overruns. | |
594 | * C, just like A and B, must have exclusive access to the chip and | |
595 | * each of them must lock against any other concurrent access. | |
596 | * Unfortunately this is not possible to have C suspend execution of A or | |
597 | * B taking place on another CPU. On UP this is no an issue since A and B | |
598 | * are run from softirq context and C from hard IRQ context, and there is | |
599 | * no other CPU where concurrent access can happen. | |
600 | * If ever there is a way to force at least B and C to always be executed | |
601 | * on the same CPU then we could use read/write locks to protect against | |
602 | * any other concurrent access and C would always interrupt B. But life | |
603 | * isn't that easy in a SMP world... | |
604 | */ | |
605 | #define smc_special_trylock(lock) \ | |
606 | ({ \ | |
607 | int __ret; \ | |
608 | local_irq_disable(); \ | |
609 | __ret = spin_trylock(lock); \ | |
610 | if (!__ret) \ | |
611 | local_irq_enable(); \ | |
612 | __ret; \ | |
613 | }) | |
614 | #define smc_special_lock(lock) spin_lock_irq(lock) | |
615 | #define smc_special_unlock(lock) spin_unlock_irq(lock) | |
616 | #else | |
617 | #define smc_special_trylock(lock) (1) | |
618 | #define smc_special_lock(lock) do { } while (0) | |
619 | #define smc_special_unlock(lock) do { } while (0) | |
620 | #endif | |
621 | ||
622 | /* | |
623 | * This is called to actually send a packet to the chip. | |
624 | */ | |
625 | static void smc_hardware_send_pkt(unsigned long data) | |
626 | { | |
627 | struct net_device *dev = (struct net_device *)data; | |
628 | struct smc_local *lp = netdev_priv(dev); | |
629 | void __iomem *ioaddr = lp->base; | |
630 | struct sk_buff *skb; | |
631 | unsigned int packet_no, len; | |
632 | unsigned char *buf; | |
633 | ||
634 | DBG(3, "%s: %s\n", dev->name, __FUNCTION__); | |
635 | ||
636 | if (!smc_special_trylock(&lp->lock)) { | |
637 | netif_stop_queue(dev); | |
638 | tasklet_schedule(&lp->tx_task); | |
639 | return; | |
640 | } | |
641 | ||
642 | skb = lp->pending_tx_skb; | |
be83668a NP |
643 | if (unlikely(!skb)) { |
644 | smc_special_unlock(&lp->lock); | |
645 | return; | |
646 | } | |
1da177e4 | 647 | lp->pending_tx_skb = NULL; |
be83668a | 648 | |
1da177e4 LT |
649 | packet_no = SMC_GET_AR(); |
650 | if (unlikely(packet_no & AR_FAILED)) { | |
651 | printk("%s: Memory allocation failed.\n", dev->name); | |
652 | lp->stats.tx_errors++; | |
653 | lp->stats.tx_fifo_errors++; | |
654 | smc_special_unlock(&lp->lock); | |
655 | goto done; | |
656 | } | |
657 | ||
658 | /* point to the beginning of the packet */ | |
659 | SMC_SET_PN(packet_no); | |
660 | SMC_SET_PTR(PTR_AUTOINC); | |
661 | ||
662 | buf = skb->data; | |
663 | len = skb->len; | |
664 | DBG(2, "%s: TX PNR 0x%x LENGTH 0x%04x (%d) BUF 0x%p\n", | |
665 | dev->name, packet_no, len, len, buf); | |
666 | PRINT_PKT(buf, len); | |
667 | ||
668 | /* | |
669 | * Send the packet length (+6 for status words, length, and ctl. | |
670 | * The card will pad to 64 bytes with zeroes if packet is too small. | |
671 | */ | |
672 | SMC_PUT_PKT_HDR(0, len + 6); | |
673 | ||
674 | /* send the actual data */ | |
675 | SMC_PUSH_DATA(buf, len & ~1); | |
676 | ||
677 | /* Send final ctl word with the last byte if there is one */ | |
678 | SMC_outw(((len & 1) ? (0x2000 | buf[len-1]) : 0), ioaddr, DATA_REG); | |
679 | ||
680 | /* | |
ea937560 NP |
681 | * If THROTTLE_TX_PKTS is set, we stop the queue here. This will |
682 | * have the effect of having at most one packet queued for TX | |
683 | * in the chip's memory at all time. | |
684 | * | |
685 | * If THROTTLE_TX_PKTS is not set then the queue is stopped only | |
686 | * when memory allocation (MC_ALLOC) does not succeed right away. | |
1da177e4 | 687 | */ |
ea937560 | 688 | if (THROTTLE_TX_PKTS) |
1da177e4 LT |
689 | netif_stop_queue(dev); |
690 | ||
691 | /* queue the packet for TX */ | |
692 | SMC_SET_MMU_CMD(MC_ENQUEUE); | |
1da177e4 LT |
693 | smc_special_unlock(&lp->lock); |
694 | ||
695 | dev->trans_start = jiffies; | |
696 | lp->stats.tx_packets++; | |
697 | lp->stats.tx_bytes += len; | |
698 | ||
699 | SMC_ENABLE_INT(IM_TX_INT | IM_TX_EMPTY_INT); | |
700 | ||
701 | done: if (!THROTTLE_TX_PKTS) | |
702 | netif_wake_queue(dev); | |
703 | ||
704 | dev_kfree_skb(skb); | |
705 | } | |
706 | ||
707 | /* | |
708 | * Since I am not sure if I will have enough room in the chip's ram | |
709 | * to store the packet, I call this routine which either sends it | |
710 | * now, or set the card to generates an interrupt when ready | |
711 | * for the packet. | |
712 | */ | |
713 | static int smc_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
714 | { | |
715 | struct smc_local *lp = netdev_priv(dev); | |
716 | void __iomem *ioaddr = lp->base; | |
717 | unsigned int numPages, poll_count, status; | |
718 | ||
719 | DBG(3, "%s: %s\n", dev->name, __FUNCTION__); | |
720 | ||
721 | BUG_ON(lp->pending_tx_skb != NULL); | |
1da177e4 LT |
722 | |
723 | /* | |
724 | * The MMU wants the number of pages to be the number of 256 bytes | |
725 | * 'pages', minus 1 (since a packet can't ever have 0 pages :)) | |
726 | * | |
727 | * The 91C111 ignores the size bits, but earlier models don't. | |
728 | * | |
729 | * Pkt size for allocating is data length +6 (for additional status | |
730 | * words, length and ctl) | |
731 | * | |
732 | * If odd size then last byte is included in ctl word. | |
733 | */ | |
734 | numPages = ((skb->len & ~1) + (6 - 1)) >> 8; | |
735 | if (unlikely(numPages > 7)) { | |
736 | printk("%s: Far too big packet error.\n", dev->name); | |
1da177e4 LT |
737 | lp->stats.tx_errors++; |
738 | lp->stats.tx_dropped++; | |
739 | dev_kfree_skb(skb); | |
740 | return 0; | |
741 | } | |
742 | ||
743 | smc_special_lock(&lp->lock); | |
744 | ||
745 | /* now, try to allocate the memory */ | |
746 | SMC_SET_MMU_CMD(MC_ALLOC | numPages); | |
747 | ||
748 | /* | |
749 | * Poll the chip for a short amount of time in case the | |
750 | * allocation succeeds quickly. | |
751 | */ | |
752 | poll_count = MEMORY_WAIT_TIME; | |
753 | do { | |
754 | status = SMC_GET_INT(); | |
755 | if (status & IM_ALLOC_INT) { | |
756 | SMC_ACK_INT(IM_ALLOC_INT); | |
757 | break; | |
758 | } | |
759 | } while (--poll_count); | |
760 | ||
761 | smc_special_unlock(&lp->lock); | |
762 | ||
be83668a | 763 | lp->pending_tx_skb = skb; |
1da177e4 LT |
764 | if (!poll_count) { |
765 | /* oh well, wait until the chip finds memory later */ | |
766 | netif_stop_queue(dev); | |
767 | DBG(2, "%s: TX memory allocation deferred.\n", dev->name); | |
768 | SMC_ENABLE_INT(IM_ALLOC_INT); | |
769 | } else { | |
770 | /* | |
771 | * Allocation succeeded: push packet to the chip's own memory | |
772 | * immediately. | |
773 | */ | |
774 | smc_hardware_send_pkt((unsigned long)dev); | |
775 | } | |
776 | ||
777 | return 0; | |
778 | } | |
779 | ||
780 | /* | |
781 | * This handles a TX interrupt, which is only called when: | |
782 | * - a TX error occurred, or | |
783 | * - CTL_AUTO_RELEASE is not set and TX of a packet completed. | |
784 | */ | |
785 | static void smc_tx(struct net_device *dev) | |
786 | { | |
787 | struct smc_local *lp = netdev_priv(dev); | |
788 | void __iomem *ioaddr = lp->base; | |
789 | unsigned int saved_packet, packet_no, tx_status, pkt_len; | |
790 | ||
791 | DBG(3, "%s: %s\n", dev->name, __FUNCTION__); | |
792 | ||
793 | /* If the TX FIFO is empty then nothing to do */ | |
794 | packet_no = SMC_GET_TXFIFO(); | |
795 | if (unlikely(packet_no & TXFIFO_TEMPTY)) { | |
796 | PRINTK("%s: smc_tx with nothing on FIFO.\n", dev->name); | |
797 | return; | |
798 | } | |
799 | ||
800 | /* select packet to read from */ | |
801 | saved_packet = SMC_GET_PN(); | |
802 | SMC_SET_PN(packet_no); | |
803 | ||
804 | /* read the first word (status word) from this packet */ | |
805 | SMC_SET_PTR(PTR_AUTOINC | PTR_READ); | |
806 | SMC_GET_PKT_HDR(tx_status, pkt_len); | |
807 | DBG(2, "%s: TX STATUS 0x%04x PNR 0x%02x\n", | |
808 | dev->name, tx_status, packet_no); | |
809 | ||
8de90115 | 810 | if (!(tx_status & ES_TX_SUC)) |
1da177e4 | 811 | lp->stats.tx_errors++; |
8de90115 NP |
812 | |
813 | if (tx_status & ES_LOSTCARR) | |
1da177e4 LT |
814 | lp->stats.tx_carrier_errors++; |
815 | ||
8de90115 NP |
816 | if (tx_status & (ES_LATCOL | ES_16COL)) { |
817 | PRINTK("%s: %s occurred on last xmit\n", dev->name, | |
818 | (tx_status & ES_LATCOL) ? | |
819 | "late collision" : "too many collisions"); | |
1da177e4 LT |
820 | lp->stats.tx_window_errors++; |
821 | if (!(lp->stats.tx_window_errors & 63) && net_ratelimit()) { | |
8de90115 NP |
822 | printk(KERN_INFO "%s: unexpectedly large number of " |
823 | "bad collisions. Please check duplex " | |
1da177e4 LT |
824 | "setting.\n", dev->name); |
825 | } | |
826 | } | |
827 | ||
828 | /* kill the packet */ | |
829 | SMC_WAIT_MMU_BUSY(); | |
830 | SMC_SET_MMU_CMD(MC_FREEPKT); | |
831 | ||
832 | /* Don't restore Packet Number Reg until busy bit is cleared */ | |
833 | SMC_WAIT_MMU_BUSY(); | |
834 | SMC_SET_PN(saved_packet); | |
835 | ||
836 | /* re-enable transmit */ | |
837 | SMC_SELECT_BANK(0); | |
838 | SMC_SET_TCR(lp->tcr_cur_mode); | |
839 | SMC_SELECT_BANK(2); | |
840 | } | |
841 | ||
842 | ||
843 | /*---PHY CONTROL AND CONFIGURATION-----------------------------------------*/ | |
844 | ||
845 | static void smc_mii_out(struct net_device *dev, unsigned int val, int bits) | |
846 | { | |
847 | struct smc_local *lp = netdev_priv(dev); | |
848 | void __iomem *ioaddr = lp->base; | |
849 | unsigned int mii_reg, mask; | |
850 | ||
851 | mii_reg = SMC_GET_MII() & ~(MII_MCLK | MII_MDOE | MII_MDO); | |
852 | mii_reg |= MII_MDOE; | |
853 | ||
854 | for (mask = 1 << (bits - 1); mask; mask >>= 1) { | |
855 | if (val & mask) | |
856 | mii_reg |= MII_MDO; | |
857 | else | |
858 | mii_reg &= ~MII_MDO; | |
859 | ||
860 | SMC_SET_MII(mii_reg); | |
861 | udelay(MII_DELAY); | |
862 | SMC_SET_MII(mii_reg | MII_MCLK); | |
863 | udelay(MII_DELAY); | |
864 | } | |
865 | } | |
866 | ||
867 | static unsigned int smc_mii_in(struct net_device *dev, int bits) | |
868 | { | |
869 | struct smc_local *lp = netdev_priv(dev); | |
870 | void __iomem *ioaddr = lp->base; | |
871 | unsigned int mii_reg, mask, val; | |
872 | ||
873 | mii_reg = SMC_GET_MII() & ~(MII_MCLK | MII_MDOE | MII_MDO); | |
874 | SMC_SET_MII(mii_reg); | |
875 | ||
876 | for (mask = 1 << (bits - 1), val = 0; mask; mask >>= 1) { | |
877 | if (SMC_GET_MII() & MII_MDI) | |
878 | val |= mask; | |
879 | ||
880 | SMC_SET_MII(mii_reg); | |
881 | udelay(MII_DELAY); | |
882 | SMC_SET_MII(mii_reg | MII_MCLK); | |
883 | udelay(MII_DELAY); | |
884 | } | |
885 | ||
886 | return val; | |
887 | } | |
888 | ||
889 | /* | |
890 | * Reads a register from the MII Management serial interface | |
891 | */ | |
892 | static int smc_phy_read(struct net_device *dev, int phyaddr, int phyreg) | |
893 | { | |
894 | struct smc_local *lp = netdev_priv(dev); | |
895 | void __iomem *ioaddr = lp->base; | |
896 | unsigned int phydata; | |
897 | ||
898 | SMC_SELECT_BANK(3); | |
899 | ||
900 | /* Idle - 32 ones */ | |
901 | smc_mii_out(dev, 0xffffffff, 32); | |
902 | ||
903 | /* Start code (01) + read (10) + phyaddr + phyreg */ | |
904 | smc_mii_out(dev, 6 << 10 | phyaddr << 5 | phyreg, 14); | |
905 | ||
906 | /* Turnaround (2bits) + phydata */ | |
907 | phydata = smc_mii_in(dev, 18); | |
908 | ||
909 | /* Return to idle state */ | |
910 | SMC_SET_MII(SMC_GET_MII() & ~(MII_MCLK|MII_MDOE|MII_MDO)); | |
911 | ||
912 | DBG(3, "%s: phyaddr=0x%x, phyreg=0x%x, phydata=0x%x\n", | |
913 | __FUNCTION__, phyaddr, phyreg, phydata); | |
914 | ||
915 | SMC_SELECT_BANK(2); | |
916 | return phydata; | |
917 | } | |
918 | ||
919 | /* | |
920 | * Writes a register to the MII Management serial interface | |
921 | */ | |
922 | static void smc_phy_write(struct net_device *dev, int phyaddr, int phyreg, | |
923 | int phydata) | |
924 | { | |
925 | struct smc_local *lp = netdev_priv(dev); | |
926 | void __iomem *ioaddr = lp->base; | |
927 | ||
928 | SMC_SELECT_BANK(3); | |
929 | ||
930 | /* Idle - 32 ones */ | |
931 | smc_mii_out(dev, 0xffffffff, 32); | |
932 | ||
933 | /* Start code (01) + write (01) + phyaddr + phyreg + turnaround + phydata */ | |
934 | smc_mii_out(dev, 5 << 28 | phyaddr << 23 | phyreg << 18 | 2 << 16 | phydata, 32); | |
935 | ||
936 | /* Return to idle state */ | |
937 | SMC_SET_MII(SMC_GET_MII() & ~(MII_MCLK|MII_MDOE|MII_MDO)); | |
938 | ||
939 | DBG(3, "%s: phyaddr=0x%x, phyreg=0x%x, phydata=0x%x\n", | |
940 | __FUNCTION__, phyaddr, phyreg, phydata); | |
941 | ||
942 | SMC_SELECT_BANK(2); | |
943 | } | |
944 | ||
945 | /* | |
946 | * Finds and reports the PHY address | |
947 | */ | |
948 | static void smc_phy_detect(struct net_device *dev) | |
949 | { | |
950 | struct smc_local *lp = netdev_priv(dev); | |
951 | int phyaddr; | |
952 | ||
953 | DBG(2, "%s: %s\n", dev->name, __FUNCTION__); | |
954 | ||
955 | lp->phy_type = 0; | |
956 | ||
957 | /* | |
958 | * Scan all 32 PHY addresses if necessary, starting at | |
959 | * PHY#1 to PHY#31, and then PHY#0 last. | |
960 | */ | |
961 | for (phyaddr = 1; phyaddr < 33; ++phyaddr) { | |
962 | unsigned int id1, id2; | |
963 | ||
964 | /* Read the PHY identifiers */ | |
965 | id1 = smc_phy_read(dev, phyaddr & 31, MII_PHYSID1); | |
966 | id2 = smc_phy_read(dev, phyaddr & 31, MII_PHYSID2); | |
967 | ||
968 | DBG(3, "%s: phy_id1=0x%x, phy_id2=0x%x\n", | |
969 | dev->name, id1, id2); | |
970 | ||
971 | /* Make sure it is a valid identifier */ | |
972 | if (id1 != 0x0000 && id1 != 0xffff && id1 != 0x8000 && | |
973 | id2 != 0x0000 && id2 != 0xffff && id2 != 0x8000) { | |
974 | /* Save the PHY's address */ | |
975 | lp->mii.phy_id = phyaddr & 31; | |
976 | lp->phy_type = id1 << 16 | id2; | |
977 | break; | |
978 | } | |
979 | } | |
980 | } | |
981 | ||
982 | /* | |
983 | * Sets the PHY to a configuration as determined by the user | |
984 | */ | |
985 | static int smc_phy_fixed(struct net_device *dev) | |
986 | { | |
987 | struct smc_local *lp = netdev_priv(dev); | |
988 | void __iomem *ioaddr = lp->base; | |
989 | int phyaddr = lp->mii.phy_id; | |
990 | int bmcr, cfg1; | |
991 | ||
992 | DBG(3, "%s: %s\n", dev->name, __FUNCTION__); | |
993 | ||
994 | /* Enter Link Disable state */ | |
995 | cfg1 = smc_phy_read(dev, phyaddr, PHY_CFG1_REG); | |
996 | cfg1 |= PHY_CFG1_LNKDIS; | |
997 | smc_phy_write(dev, phyaddr, PHY_CFG1_REG, cfg1); | |
998 | ||
999 | /* | |
1000 | * Set our fixed capabilities | |
1001 | * Disable auto-negotiation | |
1002 | */ | |
1003 | bmcr = 0; | |
1004 | ||
1005 | if (lp->ctl_rfduplx) | |
1006 | bmcr |= BMCR_FULLDPLX; | |
1007 | ||
1008 | if (lp->ctl_rspeed == 100) | |
1009 | bmcr |= BMCR_SPEED100; | |
1010 | ||
1011 | /* Write our capabilities to the phy control register */ | |
1012 | smc_phy_write(dev, phyaddr, MII_BMCR, bmcr); | |
1013 | ||
1014 | /* Re-Configure the Receive/Phy Control register */ | |
1015 | SMC_SELECT_BANK(0); | |
1016 | SMC_SET_RPC(lp->rpc_cur_mode); | |
1017 | SMC_SELECT_BANK(2); | |
1018 | ||
1019 | return 1; | |
1020 | } | |
1021 | ||
1022 | /* | |
1023 | * smc_phy_reset - reset the phy | |
1024 | * @dev: net device | |
1025 | * @phy: phy address | |
1026 | * | |
1027 | * Issue a software reset for the specified PHY and | |
1028 | * wait up to 100ms for the reset to complete. We should | |
1029 | * not access the PHY for 50ms after issuing the reset. | |
1030 | * | |
1031 | * The time to wait appears to be dependent on the PHY. | |
1032 | * | |
1033 | * Must be called with lp->lock locked. | |
1034 | */ | |
1035 | static int smc_phy_reset(struct net_device *dev, int phy) | |
1036 | { | |
1037 | struct smc_local *lp = netdev_priv(dev); | |
1038 | unsigned int bmcr; | |
1039 | int timeout; | |
1040 | ||
1041 | smc_phy_write(dev, phy, MII_BMCR, BMCR_RESET); | |
1042 | ||
1043 | for (timeout = 2; timeout; timeout--) { | |
1044 | spin_unlock_irq(&lp->lock); | |
1045 | msleep(50); | |
1046 | spin_lock_irq(&lp->lock); | |
1047 | ||
1048 | bmcr = smc_phy_read(dev, phy, MII_BMCR); | |
1049 | if (!(bmcr & BMCR_RESET)) | |
1050 | break; | |
1051 | } | |
1052 | ||
1053 | return bmcr & BMCR_RESET; | |
1054 | } | |
1055 | ||
1056 | /* | |
1057 | * smc_phy_powerdown - powerdown phy | |
1058 | * @dev: net device | |
1059 | * | |
1060 | * Power down the specified PHY | |
1061 | */ | |
1062 | static void smc_phy_powerdown(struct net_device *dev) | |
1063 | { | |
1064 | struct smc_local *lp = netdev_priv(dev); | |
1065 | unsigned int bmcr; | |
1066 | int phy = lp->mii.phy_id; | |
1067 | ||
1068 | if (lp->phy_type == 0) | |
1069 | return; | |
1070 | ||
1071 | /* We need to ensure that no calls to smc_phy_configure are | |
1072 | pending. | |
1073 | ||
1074 | flush_scheduled_work() cannot be called because we are | |
1075 | running with the netlink semaphore held (from | |
1076 | devinet_ioctl()) and the pending work queue contains | |
1077 | linkwatch_event() (scheduled by netif_carrier_off() | |
1078 | above). linkwatch_event() also wants the netlink semaphore. | |
1079 | */ | |
1080 | while(lp->work_pending) | |
be83668a | 1081 | yield(); |
1da177e4 LT |
1082 | |
1083 | bmcr = smc_phy_read(dev, phy, MII_BMCR); | |
1084 | smc_phy_write(dev, phy, MII_BMCR, bmcr | BMCR_PDOWN); | |
1085 | } | |
1086 | ||
1087 | /* | |
1088 | * smc_phy_check_media - check the media status and adjust TCR | |
1089 | * @dev: net device | |
1090 | * @init: set true for initialisation | |
1091 | * | |
1092 | * Select duplex mode depending on negotiation state. This | |
1093 | * also updates our carrier state. | |
1094 | */ | |
1095 | static void smc_phy_check_media(struct net_device *dev, int init) | |
1096 | { | |
1097 | struct smc_local *lp = netdev_priv(dev); | |
1098 | void __iomem *ioaddr = lp->base; | |
1099 | ||
1100 | if (mii_check_media(&lp->mii, netif_msg_link(lp), init)) { | |
1101 | /* duplex state has changed */ | |
1102 | if (lp->mii.full_duplex) { | |
1103 | lp->tcr_cur_mode |= TCR_SWFDUP; | |
1104 | } else { | |
1105 | lp->tcr_cur_mode &= ~TCR_SWFDUP; | |
1106 | } | |
1107 | ||
1108 | SMC_SELECT_BANK(0); | |
1109 | SMC_SET_TCR(lp->tcr_cur_mode); | |
1110 | } | |
1111 | } | |
1112 | ||
1113 | /* | |
1114 | * Configures the specified PHY through the MII management interface | |
1115 | * using Autonegotiation. | |
1116 | * Calls smc_phy_fixed() if the user has requested a certain config. | |
1117 | * If RPC ANEG bit is set, the media selection is dependent purely on | |
1118 | * the selection by the MII (either in the MII BMCR reg or the result | |
1119 | * of autonegotiation.) If the RPC ANEG bit is cleared, the selection | |
1120 | * is controlled by the RPC SPEED and RPC DPLX bits. | |
1121 | */ | |
1122 | static void smc_phy_configure(void *data) | |
1123 | { | |
1124 | struct net_device *dev = data; | |
1125 | struct smc_local *lp = netdev_priv(dev); | |
1126 | void __iomem *ioaddr = lp->base; | |
1127 | int phyaddr = lp->mii.phy_id; | |
1128 | int my_phy_caps; /* My PHY capabilities */ | |
1129 | int my_ad_caps; /* My Advertised capabilities */ | |
1130 | int status; | |
1131 | ||
1132 | DBG(3, "%s:smc_program_phy()\n", dev->name); | |
1133 | ||
1134 | spin_lock_irq(&lp->lock); | |
1135 | ||
1136 | /* | |
1137 | * We should not be called if phy_type is zero. | |
1138 | */ | |
1139 | if (lp->phy_type == 0) | |
1140 | goto smc_phy_configure_exit; | |
1141 | ||
1142 | if (smc_phy_reset(dev, phyaddr)) { | |
1143 | printk("%s: PHY reset timed out\n", dev->name); | |
1144 | goto smc_phy_configure_exit; | |
1145 | } | |
1146 | ||
1147 | /* | |
1148 | * Enable PHY Interrupts (for register 18) | |
1149 | * Interrupts listed here are disabled | |
1150 | */ | |
1151 | smc_phy_write(dev, phyaddr, PHY_MASK_REG, | |
1152 | PHY_INT_LOSSSYNC | PHY_INT_CWRD | PHY_INT_SSD | | |
1153 | PHY_INT_ESD | PHY_INT_RPOL | PHY_INT_JAB | | |
1154 | PHY_INT_SPDDET | PHY_INT_DPLXDET); | |
1155 | ||
1156 | /* Configure the Receive/Phy Control register */ | |
1157 | SMC_SELECT_BANK(0); | |
1158 | SMC_SET_RPC(lp->rpc_cur_mode); | |
1159 | ||
1160 | /* If the user requested no auto neg, then go set his request */ | |
1161 | if (lp->mii.force_media) { | |
1162 | smc_phy_fixed(dev); | |
1163 | goto smc_phy_configure_exit; | |
1164 | } | |
1165 | ||
1166 | /* Copy our capabilities from MII_BMSR to MII_ADVERTISE */ | |
1167 | my_phy_caps = smc_phy_read(dev, phyaddr, MII_BMSR); | |
1168 | ||
1169 | if (!(my_phy_caps & BMSR_ANEGCAPABLE)) { | |
1170 | printk(KERN_INFO "Auto negotiation NOT supported\n"); | |
1171 | smc_phy_fixed(dev); | |
1172 | goto smc_phy_configure_exit; | |
1173 | } | |
1174 | ||
1175 | my_ad_caps = ADVERTISE_CSMA; /* I am CSMA capable */ | |
1176 | ||
1177 | if (my_phy_caps & BMSR_100BASE4) | |
1178 | my_ad_caps |= ADVERTISE_100BASE4; | |
1179 | if (my_phy_caps & BMSR_100FULL) | |
1180 | my_ad_caps |= ADVERTISE_100FULL; | |
1181 | if (my_phy_caps & BMSR_100HALF) | |
1182 | my_ad_caps |= ADVERTISE_100HALF; | |
1183 | if (my_phy_caps & BMSR_10FULL) | |
1184 | my_ad_caps |= ADVERTISE_10FULL; | |
1185 | if (my_phy_caps & BMSR_10HALF) | |
1186 | my_ad_caps |= ADVERTISE_10HALF; | |
1187 | ||
1188 | /* Disable capabilities not selected by our user */ | |
1189 | if (lp->ctl_rspeed != 100) | |
1190 | my_ad_caps &= ~(ADVERTISE_100BASE4|ADVERTISE_100FULL|ADVERTISE_100HALF); | |
1191 | ||
1192 | if (!lp->ctl_rfduplx) | |
1193 | my_ad_caps &= ~(ADVERTISE_100FULL|ADVERTISE_10FULL); | |
1194 | ||
1195 | /* Update our Auto-Neg Advertisement Register */ | |
1196 | smc_phy_write(dev, phyaddr, MII_ADVERTISE, my_ad_caps); | |
1197 | lp->mii.advertising = my_ad_caps; | |
1198 | ||
1199 | /* | |
1200 | * Read the register back. Without this, it appears that when | |
1201 | * auto-negotiation is restarted, sometimes it isn't ready and | |
1202 | * the link does not come up. | |
1203 | */ | |
1204 | status = smc_phy_read(dev, phyaddr, MII_ADVERTISE); | |
1205 | ||
1206 | DBG(2, "%s: phy caps=%x\n", dev->name, my_phy_caps); | |
1207 | DBG(2, "%s: phy advertised caps=%x\n", dev->name, my_ad_caps); | |
1208 | ||
1209 | /* Restart auto-negotiation process in order to advertise my caps */ | |
1210 | smc_phy_write(dev, phyaddr, MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART); | |
1211 | ||
1212 | smc_phy_check_media(dev, 1); | |
1213 | ||
1214 | smc_phy_configure_exit: | |
e5254244 | 1215 | SMC_SELECT_BANK(2); |
1da177e4 LT |
1216 | spin_unlock_irq(&lp->lock); |
1217 | lp->work_pending = 0; | |
1218 | } | |
1219 | ||
1220 | /* | |
1221 | * smc_phy_interrupt | |
1222 | * | |
1223 | * Purpose: Handle interrupts relating to PHY register 18. This is | |
1224 | * called from the "hard" interrupt handler under our private spinlock. | |
1225 | */ | |
1226 | static void smc_phy_interrupt(struct net_device *dev) | |
1227 | { | |
1228 | struct smc_local *lp = netdev_priv(dev); | |
1229 | int phyaddr = lp->mii.phy_id; | |
1230 | int phy18; | |
1231 | ||
1232 | DBG(2, "%s: %s\n", dev->name, __FUNCTION__); | |
1233 | ||
1234 | if (lp->phy_type == 0) | |
1235 | return; | |
1236 | ||
1237 | for(;;) { | |
1238 | smc_phy_check_media(dev, 0); | |
1239 | ||
1240 | /* Read PHY Register 18, Status Output */ | |
1241 | phy18 = smc_phy_read(dev, phyaddr, PHY_INT_REG); | |
1242 | if ((phy18 & PHY_INT_INT) == 0) | |
1243 | break; | |
1244 | } | |
1245 | } | |
1246 | ||
1247 | /*--- END PHY CONTROL AND CONFIGURATION-------------------------------------*/ | |
1248 | ||
1249 | static void smc_10bt_check_media(struct net_device *dev, int init) | |
1250 | { | |
1251 | struct smc_local *lp = netdev_priv(dev); | |
1252 | void __iomem *ioaddr = lp->base; | |
1253 | unsigned int old_carrier, new_carrier; | |
1254 | ||
1255 | old_carrier = netif_carrier_ok(dev) ? 1 : 0; | |
1256 | ||
1257 | SMC_SELECT_BANK(0); | |
8de90115 | 1258 | new_carrier = (SMC_GET_EPH_STATUS() & ES_LINK_OK) ? 1 : 0; |
1da177e4 LT |
1259 | SMC_SELECT_BANK(2); |
1260 | ||
1261 | if (init || (old_carrier != new_carrier)) { | |
1262 | if (!new_carrier) { | |
1263 | netif_carrier_off(dev); | |
1264 | } else { | |
1265 | netif_carrier_on(dev); | |
1266 | } | |
1267 | if (netif_msg_link(lp)) | |
1268 | printk(KERN_INFO "%s: link %s\n", dev->name, | |
1269 | new_carrier ? "up" : "down"); | |
1270 | } | |
1271 | } | |
1272 | ||
1273 | static void smc_eph_interrupt(struct net_device *dev) | |
1274 | { | |
1275 | struct smc_local *lp = netdev_priv(dev); | |
1276 | void __iomem *ioaddr = lp->base; | |
1277 | unsigned int ctl; | |
1278 | ||
1279 | smc_10bt_check_media(dev, 0); | |
1280 | ||
1281 | SMC_SELECT_BANK(1); | |
1282 | ctl = SMC_GET_CTL(); | |
1283 | SMC_SET_CTL(ctl & ~CTL_LE_ENABLE); | |
1284 | SMC_SET_CTL(ctl); | |
1285 | SMC_SELECT_BANK(2); | |
1286 | } | |
1287 | ||
1288 | /* | |
1289 | * This is the main routine of the driver, to handle the device when | |
1290 | * it needs some attention. | |
1291 | */ | |
1292 | static irqreturn_t smc_interrupt(int irq, void *dev_id, struct pt_regs *regs) | |
1293 | { | |
1294 | struct net_device *dev = dev_id; | |
1295 | struct smc_local *lp = netdev_priv(dev); | |
1296 | void __iomem *ioaddr = lp->base; | |
1297 | int status, mask, timeout, card_stats; | |
1298 | int saved_pointer; | |
1299 | ||
1300 | DBG(3, "%s: %s\n", dev->name, __FUNCTION__); | |
1301 | ||
1302 | spin_lock(&lp->lock); | |
1303 | ||
1304 | /* A preamble may be used when there is a potential race | |
1305 | * between the interruptible transmit functions and this | |
1306 | * ISR. */ | |
1307 | SMC_INTERRUPT_PREAMBLE; | |
1308 | ||
1309 | saved_pointer = SMC_GET_PTR(); | |
1310 | mask = SMC_GET_INT_MASK(); | |
1311 | SMC_SET_INT_MASK(0); | |
1312 | ||
1313 | /* set a timeout value, so I don't stay here forever */ | |
5d0571d9 | 1314 | timeout = MAX_IRQ_LOOPS; |
1da177e4 LT |
1315 | |
1316 | do { | |
1317 | status = SMC_GET_INT(); | |
1318 | ||
1319 | DBG(2, "%s: INT 0x%02x MASK 0x%02x MEM 0x%04x FIFO 0x%04x\n", | |
1320 | dev->name, status, mask, | |
1321 | ({ int meminfo; SMC_SELECT_BANK(0); | |
1322 | meminfo = SMC_GET_MIR(); | |
1323 | SMC_SELECT_BANK(2); meminfo; }), | |
1324 | SMC_GET_FIFO()); | |
1325 | ||
1326 | status &= mask; | |
1327 | if (!status) | |
1328 | break; | |
1329 | ||
ea937560 NP |
1330 | if (status & IM_TX_INT) { |
1331 | /* do this before RX as it will free memory quickly */ | |
1da177e4 LT |
1332 | DBG(3, "%s: TX int\n", dev->name); |
1333 | smc_tx(dev); | |
1334 | SMC_ACK_INT(IM_TX_INT); | |
1335 | if (THROTTLE_TX_PKTS) | |
1336 | netif_wake_queue(dev); | |
ea937560 NP |
1337 | } else if (status & IM_RCV_INT) { |
1338 | DBG(3, "%s: RX irq\n", dev->name); | |
1339 | smc_rcv(dev); | |
1da177e4 LT |
1340 | } else if (status & IM_ALLOC_INT) { |
1341 | DBG(3, "%s: Allocation irq\n", dev->name); | |
1342 | tasklet_hi_schedule(&lp->tx_task); | |
1343 | mask &= ~IM_ALLOC_INT; | |
1344 | } else if (status & IM_TX_EMPTY_INT) { | |
1345 | DBG(3, "%s: TX empty\n", dev->name); | |
1346 | mask &= ~IM_TX_EMPTY_INT; | |
1347 | ||
1348 | /* update stats */ | |
1349 | SMC_SELECT_BANK(0); | |
1350 | card_stats = SMC_GET_COUNTER(); | |
1351 | SMC_SELECT_BANK(2); | |
1352 | ||
1353 | /* single collisions */ | |
1354 | lp->stats.collisions += card_stats & 0xF; | |
1355 | card_stats >>= 4; | |
1356 | ||
1357 | /* multiple collisions */ | |
1358 | lp->stats.collisions += card_stats & 0xF; | |
1359 | } else if (status & IM_RX_OVRN_INT) { | |
8de90115 NP |
1360 | DBG(1, "%s: RX overrun (EPH_ST 0x%04x)\n", dev->name, |
1361 | ({ int eph_st; SMC_SELECT_BANK(0); | |
1362 | eph_st = SMC_GET_EPH_STATUS(); | |
1363 | SMC_SELECT_BANK(2); eph_st; }) ); | |
1da177e4 LT |
1364 | SMC_ACK_INT(IM_RX_OVRN_INT); |
1365 | lp->stats.rx_errors++; | |
1366 | lp->stats.rx_fifo_errors++; | |
1367 | } else if (status & IM_EPH_INT) { | |
1368 | smc_eph_interrupt(dev); | |
1369 | } else if (status & IM_MDINT) { | |
1370 | SMC_ACK_INT(IM_MDINT); | |
1371 | smc_phy_interrupt(dev); | |
1372 | } else if (status & IM_ERCV_INT) { | |
1373 | SMC_ACK_INT(IM_ERCV_INT); | |
1374 | PRINTK("%s: UNSUPPORTED: ERCV INTERRUPT \n", dev->name); | |
1375 | } | |
1376 | } while (--timeout); | |
1377 | ||
1378 | /* restore register states */ | |
1379 | SMC_SET_PTR(saved_pointer); | |
1380 | SMC_SET_INT_MASK(mask); | |
1da177e4 LT |
1381 | spin_unlock(&lp->lock); |
1382 | ||
5d0571d9 NP |
1383 | if (timeout == MAX_IRQ_LOOPS) |
1384 | PRINTK("%s: spurious interrupt (mask = 0x%02x)\n", | |
1385 | dev->name, mask); | |
1386 | DBG(3, "%s: Interrupt done (%d loops)\n", | |
1387 | dev->name, MAX_IRQ_LOOPS - timeout); | |
1da177e4 LT |
1388 | |
1389 | /* | |
1390 | * We return IRQ_HANDLED unconditionally here even if there was | |
1391 | * nothing to do. There is a possibility that a packet might | |
1392 | * get enqueued into the chip right after TX_EMPTY_INT is raised | |
1393 | * but just before the CPU acknowledges the IRQ. | |
1394 | * Better take an unneeded IRQ in some occasions than complexifying | |
1395 | * the code for all cases. | |
1396 | */ | |
1397 | return IRQ_HANDLED; | |
1398 | } | |
1399 | ||
1400 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1401 | /* | |
1402 | * Polling receive - used by netconsole and other diagnostic tools | |
1403 | * to allow network i/o with interrupts disabled. | |
1404 | */ | |
1405 | static void smc_poll_controller(struct net_device *dev) | |
1406 | { | |
1407 | disable_irq(dev->irq); | |
1408 | smc_interrupt(dev->irq, dev, NULL); | |
1409 | enable_irq(dev->irq); | |
1410 | } | |
1411 | #endif | |
1412 | ||
1413 | /* Our watchdog timed out. Called by the networking layer */ | |
1414 | static void smc_timeout(struct net_device *dev) | |
1415 | { | |
1416 | struct smc_local *lp = netdev_priv(dev); | |
1417 | void __iomem *ioaddr = lp->base; | |
8de90115 | 1418 | int status, mask, eph_st, meminfo, fifo; |
1da177e4 LT |
1419 | |
1420 | DBG(2, "%s: %s\n", dev->name, __FUNCTION__); | |
1421 | ||
1422 | spin_lock_irq(&lp->lock); | |
1423 | status = SMC_GET_INT(); | |
1424 | mask = SMC_GET_INT_MASK(); | |
1425 | fifo = SMC_GET_FIFO(); | |
1426 | SMC_SELECT_BANK(0); | |
8de90115 | 1427 | eph_st = SMC_GET_EPH_STATUS(); |
1da177e4 LT |
1428 | meminfo = SMC_GET_MIR(); |
1429 | SMC_SELECT_BANK(2); | |
1430 | spin_unlock_irq(&lp->lock); | |
8de90115 NP |
1431 | PRINTK( "%s: TX timeout (INT 0x%02x INTMASK 0x%02x " |
1432 | "MEM 0x%04x FIFO 0x%04x EPH_ST 0x%04x)\n", | |
1433 | dev->name, status, mask, meminfo, fifo, eph_st ); | |
1da177e4 LT |
1434 | |
1435 | smc_reset(dev); | |
1436 | smc_enable(dev); | |
1437 | ||
1438 | /* | |
1439 | * Reconfiguring the PHY doesn't seem like a bad idea here, but | |
1440 | * smc_phy_configure() calls msleep() which calls schedule_timeout() | |
1441 | * which calls schedule(). Hence we use a work queue. | |
1442 | */ | |
1443 | if (lp->phy_type != 0) { | |
1444 | if (schedule_work(&lp->phy_configure)) { | |
1445 | lp->work_pending = 1; | |
1446 | } | |
1447 | } | |
1448 | ||
1449 | /* We can accept TX packets again */ | |
1450 | dev->trans_start = jiffies; | |
1451 | netif_wake_queue(dev); | |
1452 | } | |
1453 | ||
1454 | /* | |
1455 | * This routine will, depending on the values passed to it, | |
1456 | * either make it accept multicast packets, go into | |
1457 | * promiscuous mode (for TCPDUMP and cousins) or accept | |
1458 | * a select set of multicast packets | |
1459 | */ | |
1460 | static void smc_set_multicast_list(struct net_device *dev) | |
1461 | { | |
1462 | struct smc_local *lp = netdev_priv(dev); | |
1463 | void __iomem *ioaddr = lp->base; | |
1464 | unsigned char multicast_table[8]; | |
1465 | int update_multicast = 0; | |
1466 | ||
1467 | DBG(2, "%s: %s\n", dev->name, __FUNCTION__); | |
1468 | ||
1469 | if (dev->flags & IFF_PROMISC) { | |
1470 | DBG(2, "%s: RCR_PRMS\n", dev->name); | |
1471 | lp->rcr_cur_mode |= RCR_PRMS; | |
1472 | } | |
1473 | ||
1474 | /* BUG? I never disable promiscuous mode if multicasting was turned on. | |
1475 | Now, I turn off promiscuous mode, but I don't do anything to multicasting | |
1476 | when promiscuous mode is turned on. | |
1477 | */ | |
1478 | ||
1479 | /* | |
1480 | * Here, I am setting this to accept all multicast packets. | |
1481 | * I don't need to zero the multicast table, because the flag is | |
1482 | * checked before the table is | |
1483 | */ | |
1484 | else if (dev->flags & IFF_ALLMULTI || dev->mc_count > 16) { | |
1485 | DBG(2, "%s: RCR_ALMUL\n", dev->name); | |
1486 | lp->rcr_cur_mode |= RCR_ALMUL; | |
1487 | } | |
1488 | ||
1489 | /* | |
1490 | * This sets the internal hardware table to filter out unwanted | |
1491 | * multicast packets before they take up memory. | |
1492 | * | |
1493 | * The SMC chip uses a hash table where the high 6 bits of the CRC of | |
1494 | * address are the offset into the table. If that bit is 1, then the | |
1495 | * multicast packet is accepted. Otherwise, it's dropped silently. | |
1496 | * | |
1497 | * To use the 6 bits as an offset into the table, the high 3 bits are | |
1498 | * the number of the 8 bit register, while the low 3 bits are the bit | |
1499 | * within that register. | |
1500 | */ | |
1501 | else if (dev->mc_count) { | |
1502 | int i; | |
1503 | struct dev_mc_list *cur_addr; | |
1504 | ||
1505 | /* table for flipping the order of 3 bits */ | |
1506 | static const unsigned char invert3[] = {0, 4, 2, 6, 1, 5, 3, 7}; | |
1507 | ||
1508 | /* start with a table of all zeros: reject all */ | |
1509 | memset(multicast_table, 0, sizeof(multicast_table)); | |
1510 | ||
1511 | cur_addr = dev->mc_list; | |
1512 | for (i = 0; i < dev->mc_count; i++, cur_addr = cur_addr->next) { | |
1513 | int position; | |
1514 | ||
1515 | /* do we have a pointer here? */ | |
1516 | if (!cur_addr) | |
1517 | break; | |
1518 | /* make sure this is a multicast address - | |
1519 | shouldn't this be a given if we have it here ? */ | |
1520 | if (!(*cur_addr->dmi_addr & 1)) | |
1521 | continue; | |
1522 | ||
1523 | /* only use the low order bits */ | |
1524 | position = crc32_le(~0, cur_addr->dmi_addr, 6) & 0x3f; | |
1525 | ||
1526 | /* do some messy swapping to put the bit in the right spot */ | |
1527 | multicast_table[invert3[position&7]] |= | |
1528 | (1<<invert3[(position>>3)&7]); | |
1529 | } | |
1530 | ||
1531 | /* be sure I get rid of flags I might have set */ | |
1532 | lp->rcr_cur_mode &= ~(RCR_PRMS | RCR_ALMUL); | |
1533 | ||
1534 | /* now, the table can be loaded into the chipset */ | |
1535 | update_multicast = 1; | |
1536 | } else { | |
1537 | DBG(2, "%s: ~(RCR_PRMS|RCR_ALMUL)\n", dev->name); | |
1538 | lp->rcr_cur_mode &= ~(RCR_PRMS | RCR_ALMUL); | |
1539 | ||
1540 | /* | |
1541 | * since I'm disabling all multicast entirely, I need to | |
1542 | * clear the multicast list | |
1543 | */ | |
1544 | memset(multicast_table, 0, sizeof(multicast_table)); | |
1545 | update_multicast = 1; | |
1546 | } | |
1547 | ||
1548 | spin_lock_irq(&lp->lock); | |
1549 | SMC_SELECT_BANK(0); | |
1550 | SMC_SET_RCR(lp->rcr_cur_mode); | |
1551 | if (update_multicast) { | |
1552 | SMC_SELECT_BANK(3); | |
1553 | SMC_SET_MCAST(multicast_table); | |
1554 | } | |
1555 | SMC_SELECT_BANK(2); | |
1556 | spin_unlock_irq(&lp->lock); | |
1557 | } | |
1558 | ||
1559 | ||
1560 | /* | |
1561 | * Open and Initialize the board | |
1562 | * | |
1563 | * Set up everything, reset the card, etc.. | |
1564 | */ | |
1565 | static int | |
1566 | smc_open(struct net_device *dev) | |
1567 | { | |
1568 | struct smc_local *lp = netdev_priv(dev); | |
1569 | ||
1570 | DBG(2, "%s: %s\n", dev->name, __FUNCTION__); | |
1571 | ||
1572 | /* | |
1573 | * Check that the address is valid. If its not, refuse | |
1574 | * to bring the device up. The user must specify an | |
1575 | * address using ifconfig eth0 hw ether xx:xx:xx:xx:xx:xx | |
1576 | */ | |
1577 | if (!is_valid_ether_addr(dev->dev_addr)) { | |
1578 | PRINTK("%s: no valid ethernet hw addr\n", __FUNCTION__); | |
1579 | return -EINVAL; | |
1580 | } | |
1581 | ||
1582 | /* Setup the default Register Modes */ | |
1583 | lp->tcr_cur_mode = TCR_DEFAULT; | |
1584 | lp->rcr_cur_mode = RCR_DEFAULT; | |
1585 | lp->rpc_cur_mode = RPC_DEFAULT; | |
1586 | ||
1587 | /* | |
1588 | * If we are not using a MII interface, we need to | |
1589 | * monitor our own carrier signal to detect faults. | |
1590 | */ | |
1591 | if (lp->phy_type == 0) | |
1592 | lp->tcr_cur_mode |= TCR_MON_CSN; | |
1593 | ||
1594 | /* reset the hardware */ | |
1595 | smc_reset(dev); | |
1596 | smc_enable(dev); | |
1597 | ||
1598 | /* Configure the PHY, initialize the link state */ | |
1599 | if (lp->phy_type != 0) | |
1600 | smc_phy_configure(dev); | |
1601 | else { | |
1602 | spin_lock_irq(&lp->lock); | |
1603 | smc_10bt_check_media(dev, 1); | |
1604 | spin_unlock_irq(&lp->lock); | |
1605 | } | |
1606 | ||
1607 | netif_start_queue(dev); | |
1608 | return 0; | |
1609 | } | |
1610 | ||
1611 | /* | |
1612 | * smc_close | |
1613 | * | |
1614 | * this makes the board clean up everything that it can | |
1615 | * and not talk to the outside world. Caused by | |
1616 | * an 'ifconfig ethX down' | |
1617 | */ | |
1618 | static int smc_close(struct net_device *dev) | |
1619 | { | |
1620 | struct smc_local *lp = netdev_priv(dev); | |
1621 | ||
1622 | DBG(2, "%s: %s\n", dev->name, __FUNCTION__); | |
1623 | ||
1624 | netif_stop_queue(dev); | |
1625 | netif_carrier_off(dev); | |
1626 | ||
1627 | /* clear everything */ | |
1628 | smc_shutdown(dev); | |
be83668a | 1629 | tasklet_kill(&lp->tx_task); |
1da177e4 | 1630 | smc_phy_powerdown(dev); |
1da177e4 LT |
1631 | return 0; |
1632 | } | |
1633 | ||
1634 | /* | |
1635 | * Get the current statistics. | |
1636 | * This may be called with the card open or closed. | |
1637 | */ | |
1638 | static struct net_device_stats *smc_query_statistics(struct net_device *dev) | |
1639 | { | |
1640 | struct smc_local *lp = netdev_priv(dev); | |
1641 | ||
1642 | DBG(2, "%s: %s\n", dev->name, __FUNCTION__); | |
1643 | ||
1644 | return &lp->stats; | |
1645 | } | |
1646 | ||
1647 | /* | |
1648 | * Ethtool support | |
1649 | */ | |
1650 | static int | |
1651 | smc_ethtool_getsettings(struct net_device *dev, struct ethtool_cmd *cmd) | |
1652 | { | |
1653 | struct smc_local *lp = netdev_priv(dev); | |
1654 | int ret; | |
1655 | ||
1656 | cmd->maxtxpkt = 1; | |
1657 | cmd->maxrxpkt = 1; | |
1658 | ||
1659 | if (lp->phy_type != 0) { | |
1660 | spin_lock_irq(&lp->lock); | |
1661 | ret = mii_ethtool_gset(&lp->mii, cmd); | |
1662 | spin_unlock_irq(&lp->lock); | |
1663 | } else { | |
1664 | cmd->supported = SUPPORTED_10baseT_Half | | |
1665 | SUPPORTED_10baseT_Full | | |
1666 | SUPPORTED_TP | SUPPORTED_AUI; | |
1667 | ||
1668 | if (lp->ctl_rspeed == 10) | |
1669 | cmd->speed = SPEED_10; | |
1670 | else if (lp->ctl_rspeed == 100) | |
1671 | cmd->speed = SPEED_100; | |
1672 | ||
1673 | cmd->autoneg = AUTONEG_DISABLE; | |
1674 | cmd->transceiver = XCVR_INTERNAL; | |
1675 | cmd->port = 0; | |
1676 | cmd->duplex = lp->tcr_cur_mode & TCR_SWFDUP ? DUPLEX_FULL : DUPLEX_HALF; | |
1677 | ||
1678 | ret = 0; | |
1679 | } | |
1680 | ||
1681 | return ret; | |
1682 | } | |
1683 | ||
1684 | static int | |
1685 | smc_ethtool_setsettings(struct net_device *dev, struct ethtool_cmd *cmd) | |
1686 | { | |
1687 | struct smc_local *lp = netdev_priv(dev); | |
1688 | int ret; | |
1689 | ||
1690 | if (lp->phy_type != 0) { | |
1691 | spin_lock_irq(&lp->lock); | |
1692 | ret = mii_ethtool_sset(&lp->mii, cmd); | |
1693 | spin_unlock_irq(&lp->lock); | |
1694 | } else { | |
1695 | if (cmd->autoneg != AUTONEG_DISABLE || | |
1696 | cmd->speed != SPEED_10 || | |
1697 | (cmd->duplex != DUPLEX_HALF && cmd->duplex != DUPLEX_FULL) || | |
1698 | (cmd->port != PORT_TP && cmd->port != PORT_AUI)) | |
1699 | return -EINVAL; | |
1700 | ||
1701 | // lp->port = cmd->port; | |
1702 | lp->ctl_rfduplx = cmd->duplex == DUPLEX_FULL; | |
1703 | ||
1704 | // if (netif_running(dev)) | |
1705 | // smc_set_port(dev); | |
1706 | ||
1707 | ret = 0; | |
1708 | } | |
1709 | ||
1710 | return ret; | |
1711 | } | |
1712 | ||
1713 | static void | |
1714 | smc_ethtool_getdrvinfo(struct net_device *dev, struct ethtool_drvinfo *info) | |
1715 | { | |
1716 | strncpy(info->driver, CARDNAME, sizeof(info->driver)); | |
1717 | strncpy(info->version, version, sizeof(info->version)); | |
1718 | strncpy(info->bus_info, dev->class_dev.dev->bus_id, sizeof(info->bus_info)); | |
1719 | } | |
1720 | ||
1721 | static int smc_ethtool_nwayreset(struct net_device *dev) | |
1722 | { | |
1723 | struct smc_local *lp = netdev_priv(dev); | |
1724 | int ret = -EINVAL; | |
1725 | ||
1726 | if (lp->phy_type != 0) { | |
1727 | spin_lock_irq(&lp->lock); | |
1728 | ret = mii_nway_restart(&lp->mii); | |
1729 | spin_unlock_irq(&lp->lock); | |
1730 | } | |
1731 | ||
1732 | return ret; | |
1733 | } | |
1734 | ||
1735 | static u32 smc_ethtool_getmsglevel(struct net_device *dev) | |
1736 | { | |
1737 | struct smc_local *lp = netdev_priv(dev); | |
1738 | return lp->msg_enable; | |
1739 | } | |
1740 | ||
1741 | static void smc_ethtool_setmsglevel(struct net_device *dev, u32 level) | |
1742 | { | |
1743 | struct smc_local *lp = netdev_priv(dev); | |
1744 | lp->msg_enable = level; | |
1745 | } | |
1746 | ||
1747 | static struct ethtool_ops smc_ethtool_ops = { | |
1748 | .get_settings = smc_ethtool_getsettings, | |
1749 | .set_settings = smc_ethtool_setsettings, | |
1750 | .get_drvinfo = smc_ethtool_getdrvinfo, | |
1751 | ||
1752 | .get_msglevel = smc_ethtool_getmsglevel, | |
1753 | .set_msglevel = smc_ethtool_setmsglevel, | |
1754 | .nway_reset = smc_ethtool_nwayreset, | |
1755 | .get_link = ethtool_op_get_link, | |
1756 | // .get_eeprom = smc_ethtool_geteeprom, | |
1757 | // .set_eeprom = smc_ethtool_seteeprom, | |
1758 | }; | |
1759 | ||
1760 | /* | |
1761 | * smc_findirq | |
1762 | * | |
1763 | * This routine has a simple purpose -- make the SMC chip generate an | |
1764 | * interrupt, so an auto-detect routine can detect it, and find the IRQ, | |
1765 | */ | |
1766 | /* | |
1767 | * does this still work? | |
1768 | * | |
1769 | * I just deleted auto_irq.c, since it was never built... | |
1770 | * --jgarzik | |
1771 | */ | |
1772 | static int __init smc_findirq(void __iomem *ioaddr) | |
1773 | { | |
1774 | int timeout = 20; | |
1775 | unsigned long cookie; | |
1776 | ||
1777 | DBG(2, "%s: %s\n", CARDNAME, __FUNCTION__); | |
1778 | ||
1779 | cookie = probe_irq_on(); | |
1780 | ||
1781 | /* | |
1782 | * What I try to do here is trigger an ALLOC_INT. This is done | |
1783 | * by allocating a small chunk of memory, which will give an interrupt | |
1784 | * when done. | |
1785 | */ | |
1786 | /* enable ALLOCation interrupts ONLY */ | |
1787 | SMC_SELECT_BANK(2); | |
1788 | SMC_SET_INT_MASK(IM_ALLOC_INT); | |
1789 | ||
1790 | /* | |
1791 | * Allocate 512 bytes of memory. Note that the chip was just | |
1792 | * reset so all the memory is available | |
1793 | */ | |
1794 | SMC_SET_MMU_CMD(MC_ALLOC | 1); | |
1795 | ||
1796 | /* | |
1797 | * Wait until positive that the interrupt has been generated | |
1798 | */ | |
1799 | do { | |
1800 | int int_status; | |
1801 | udelay(10); | |
1802 | int_status = SMC_GET_INT(); | |
1803 | if (int_status & IM_ALLOC_INT) | |
1804 | break; /* got the interrupt */ | |
1805 | } while (--timeout); | |
1806 | ||
1807 | /* | |
1808 | * there is really nothing that I can do here if timeout fails, | |
1809 | * as autoirq_report will return a 0 anyway, which is what I | |
1810 | * want in this case. Plus, the clean up is needed in both | |
1811 | * cases. | |
1812 | */ | |
1813 | ||
1814 | /* and disable all interrupts again */ | |
1815 | SMC_SET_INT_MASK(0); | |
1816 | ||
1817 | /* and return what I found */ | |
1818 | return probe_irq_off(cookie); | |
1819 | } | |
1820 | ||
1821 | /* | |
1822 | * Function: smc_probe(unsigned long ioaddr) | |
1823 | * | |
1824 | * Purpose: | |
1825 | * Tests to see if a given ioaddr points to an SMC91x chip. | |
1826 | * Returns a 0 on success | |
1827 | * | |
1828 | * Algorithm: | |
1829 | * (1) see if the high byte of BANK_SELECT is 0x33 | |
1830 | * (2) compare the ioaddr with the base register's address | |
1831 | * (3) see if I recognize the chip ID in the appropriate register | |
1832 | * | |
1833 | * Here I do typical initialization tasks. | |
1834 | * | |
1835 | * o Initialize the structure if needed | |
1836 | * o print out my vanity message if not done so already | |
1837 | * o print out what type of hardware is detected | |
1838 | * o print out the ethernet address | |
1839 | * o find the IRQ | |
1840 | * o set up my private data | |
1841 | * o configure the dev structure with my subroutines | |
1842 | * o actually GRAB the irq. | |
1843 | * o GRAB the region | |
1844 | */ | |
1845 | static int __init smc_probe(struct net_device *dev, void __iomem *ioaddr) | |
1846 | { | |
1847 | struct smc_local *lp = netdev_priv(dev); | |
1848 | static int version_printed = 0; | |
1849 | int i, retval; | |
1850 | unsigned int val, revision_register; | |
1851 | const char *version_string; | |
1852 | ||
1853 | DBG(2, "%s: %s\n", CARDNAME, __FUNCTION__); | |
1854 | ||
1855 | /* First, see if the high byte is 0x33 */ | |
1856 | val = SMC_CURRENT_BANK(); | |
1857 | DBG(2, "%s: bank signature probe returned 0x%04x\n", CARDNAME, val); | |
1858 | if ((val & 0xFF00) != 0x3300) { | |
1859 | if ((val & 0xFF) == 0x33) { | |
1860 | printk(KERN_WARNING | |
1861 | "%s: Detected possible byte-swapped interface" | |
1862 | " at IOADDR %p\n", CARDNAME, ioaddr); | |
1863 | } | |
1864 | retval = -ENODEV; | |
1865 | goto err_out; | |
1866 | } | |
1867 | ||
1868 | /* | |
1869 | * The above MIGHT indicate a device, but I need to write to | |
1870 | * further test this. | |
1871 | */ | |
1872 | SMC_SELECT_BANK(0); | |
1873 | val = SMC_CURRENT_BANK(); | |
1874 | if ((val & 0xFF00) != 0x3300) { | |
1875 | retval = -ENODEV; | |
1876 | goto err_out; | |
1877 | } | |
1878 | ||
1879 | /* | |
1880 | * well, we've already written once, so hopefully another | |
1881 | * time won't hurt. This time, I need to switch the bank | |
1882 | * register to bank 1, so I can access the base address | |
1883 | * register | |
1884 | */ | |
1885 | SMC_SELECT_BANK(1); | |
1886 | val = SMC_GET_BASE(); | |
1887 | val = ((val & 0x1F00) >> 3) << SMC_IO_SHIFT; | |
53155109 | 1888 | if (((unsigned int)ioaddr & (0x3e0 << SMC_IO_SHIFT)) != val) { |
1da177e4 LT |
1889 | printk("%s: IOADDR %p doesn't match configuration (%x).\n", |
1890 | CARDNAME, ioaddr, val); | |
1891 | } | |
1892 | ||
1893 | /* | |
1894 | * check if the revision register is something that I | |
1895 | * recognize. These might need to be added to later, | |
1896 | * as future revisions could be added. | |
1897 | */ | |
1898 | SMC_SELECT_BANK(3); | |
1899 | revision_register = SMC_GET_REV(); | |
1900 | DBG(2, "%s: revision = 0x%04x\n", CARDNAME, revision_register); | |
1901 | version_string = chip_ids[ (revision_register >> 4) & 0xF]; | |
1902 | if (!version_string || (revision_register & 0xff00) != 0x3300) { | |
1903 | /* I don't recognize this chip, so... */ | |
1904 | printk("%s: IO %p: Unrecognized revision register 0x%04x" | |
1905 | ", Contact author.\n", CARDNAME, | |
1906 | ioaddr, revision_register); | |
1907 | ||
1908 | retval = -ENODEV; | |
1909 | goto err_out; | |
1910 | } | |
1911 | ||
1912 | /* At this point I'll assume that the chip is an SMC91x. */ | |
1913 | if (version_printed++ == 0) | |
1914 | printk("%s", version); | |
1915 | ||
1916 | /* fill in some of the fields */ | |
1917 | dev->base_addr = (unsigned long)ioaddr; | |
1918 | lp->base = ioaddr; | |
1919 | lp->version = revision_register & 0xff; | |
1920 | spin_lock_init(&lp->lock); | |
1921 | ||
1922 | /* Get the MAC address */ | |
1923 | SMC_SELECT_BANK(1); | |
1924 | SMC_GET_MAC_ADDR(dev->dev_addr); | |
1925 | ||
1926 | /* now, reset the chip, and put it into a known state */ | |
1927 | smc_reset(dev); | |
1928 | ||
1929 | /* | |
1930 | * If dev->irq is 0, then the device has to be banged on to see | |
1931 | * what the IRQ is. | |
1932 | * | |
1933 | * This banging doesn't always detect the IRQ, for unknown reasons. | |
1934 | * a workaround is to reset the chip and try again. | |
1935 | * | |
1936 | * Interestingly, the DOS packet driver *SETS* the IRQ on the card to | |
1937 | * be what is requested on the command line. I don't do that, mostly | |
1938 | * because the card that I have uses a non-standard method of accessing | |
1939 | * the IRQs, and because this _should_ work in most configurations. | |
1940 | * | |
1941 | * Specifying an IRQ is done with the assumption that the user knows | |
1942 | * what (s)he is doing. No checking is done!!!! | |
1943 | */ | |
1944 | if (dev->irq < 1) { | |
1945 | int trials; | |
1946 | ||
1947 | trials = 3; | |
1948 | while (trials--) { | |
1949 | dev->irq = smc_findirq(ioaddr); | |
1950 | if (dev->irq) | |
1951 | break; | |
1952 | /* kick the card and try again */ | |
1953 | smc_reset(dev); | |
1954 | } | |
1955 | } | |
1956 | if (dev->irq == 0) { | |
1957 | printk("%s: Couldn't autodetect your IRQ. Use irq=xx.\n", | |
1958 | dev->name); | |
1959 | retval = -ENODEV; | |
1960 | goto err_out; | |
1961 | } | |
1962 | dev->irq = irq_canonicalize(dev->irq); | |
1963 | ||
1964 | /* Fill in the fields of the device structure with ethernet values. */ | |
1965 | ether_setup(dev); | |
1966 | ||
1967 | dev->open = smc_open; | |
1968 | dev->stop = smc_close; | |
1969 | dev->hard_start_xmit = smc_hard_start_xmit; | |
1970 | dev->tx_timeout = smc_timeout; | |
1971 | dev->watchdog_timeo = msecs_to_jiffies(watchdog); | |
1972 | dev->get_stats = smc_query_statistics; | |
1973 | dev->set_multicast_list = smc_set_multicast_list; | |
1974 | dev->ethtool_ops = &smc_ethtool_ops; | |
1975 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1976 | dev->poll_controller = smc_poll_controller; | |
1977 | #endif | |
1978 | ||
1979 | tasklet_init(&lp->tx_task, smc_hardware_send_pkt, (unsigned long)dev); | |
1980 | INIT_WORK(&lp->phy_configure, smc_phy_configure, dev); | |
1981 | lp->mii.phy_id_mask = 0x1f; | |
1982 | lp->mii.reg_num_mask = 0x1f; | |
1983 | lp->mii.force_media = 0; | |
1984 | lp->mii.full_duplex = 0; | |
1985 | lp->mii.dev = dev; | |
1986 | lp->mii.mdio_read = smc_phy_read; | |
1987 | lp->mii.mdio_write = smc_phy_write; | |
1988 | ||
1989 | /* | |
1990 | * Locate the phy, if any. | |
1991 | */ | |
1992 | if (lp->version >= (CHIP_91100 << 4)) | |
1993 | smc_phy_detect(dev); | |
1994 | ||
99e1baf8 NP |
1995 | /* then shut everything down to save power */ |
1996 | smc_shutdown(dev); | |
1997 | smc_phy_powerdown(dev); | |
1998 | ||
1da177e4 LT |
1999 | /* Set default parameters */ |
2000 | lp->msg_enable = NETIF_MSG_LINK; | |
2001 | lp->ctl_rfduplx = 0; | |
2002 | lp->ctl_rspeed = 10; | |
2003 | ||
2004 | if (lp->version >= (CHIP_91100 << 4)) { | |
2005 | lp->ctl_rfduplx = 1; | |
2006 | lp->ctl_rspeed = 100; | |
2007 | } | |
2008 | ||
2009 | /* Grab the IRQ */ | |
2010 | retval = request_irq(dev->irq, &smc_interrupt, 0, dev->name, dev); | |
2011 | if (retval) | |
2012 | goto err_out; | |
2013 | ||
5f13e7ec | 2014 | set_irq_type(dev->irq, SMC_IRQ_TRIGGER_TYPE); |
1da177e4 LT |
2015 | |
2016 | #ifdef SMC_USE_PXA_DMA | |
2017 | { | |
2018 | int dma = pxa_request_dma(dev->name, DMA_PRIO_LOW, | |
2019 | smc_pxa_dma_irq, NULL); | |
2020 | if (dma >= 0) | |
2021 | dev->dma = dma; | |
2022 | } | |
2023 | #endif | |
2024 | ||
2025 | retval = register_netdev(dev); | |
2026 | if (retval == 0) { | |
2027 | /* now, print out the card info, in a short format.. */ | |
2028 | printk("%s: %s (rev %d) at %p IRQ %d", | |
2029 | dev->name, version_string, revision_register & 0x0f, | |
2030 | lp->base, dev->irq); | |
2031 | ||
2032 | if (dev->dma != (unsigned char)-1) | |
2033 | printk(" DMA %d", dev->dma); | |
2034 | ||
2035 | printk("%s%s\n", nowait ? " [nowait]" : "", | |
2036 | THROTTLE_TX_PKTS ? " [throttle_tx]" : ""); | |
2037 | ||
2038 | if (!is_valid_ether_addr(dev->dev_addr)) { | |
2039 | printk("%s: Invalid ethernet MAC address. Please " | |
2040 | "set using ifconfig\n", dev->name); | |
2041 | } else { | |
2042 | /* Print the Ethernet address */ | |
2043 | printk("%s: Ethernet addr: ", dev->name); | |
2044 | for (i = 0; i < 5; i++) | |
2045 | printk("%2.2x:", dev->dev_addr[i]); | |
2046 | printk("%2.2x\n", dev->dev_addr[5]); | |
2047 | } | |
2048 | ||
2049 | if (lp->phy_type == 0) { | |
2050 | PRINTK("%s: No PHY found\n", dev->name); | |
2051 | } else if ((lp->phy_type & 0xfffffff0) == 0x0016f840) { | |
2052 | PRINTK("%s: PHY LAN83C183 (LAN91C111 Internal)\n", dev->name); | |
2053 | } else if ((lp->phy_type & 0xfffffff0) == 0x02821c50) { | |
2054 | PRINTK("%s: PHY LAN83C180\n", dev->name); | |
2055 | } | |
2056 | } | |
2057 | ||
2058 | err_out: | |
2059 | #ifdef SMC_USE_PXA_DMA | |
2060 | if (retval && dev->dma != (unsigned char)-1) | |
2061 | pxa_free_dma(dev->dma); | |
2062 | #endif | |
2063 | return retval; | |
2064 | } | |
2065 | ||
2066 | static int smc_enable_device(struct platform_device *pdev) | |
2067 | { | |
2068 | unsigned long flags; | |
2069 | unsigned char ecor, ecsr; | |
2070 | void __iomem *addr; | |
2071 | struct resource * res; | |
2072 | ||
2073 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-attrib"); | |
2074 | if (!res) | |
2075 | return 0; | |
2076 | ||
2077 | /* | |
2078 | * Map the attribute space. This is overkill, but clean. | |
2079 | */ | |
2080 | addr = ioremap(res->start, ATTRIB_SIZE); | |
2081 | if (!addr) | |
2082 | return -ENOMEM; | |
2083 | ||
2084 | /* | |
2085 | * Reset the device. We must disable IRQs around this | |
2086 | * since a reset causes the IRQ line become active. | |
2087 | */ | |
2088 | local_irq_save(flags); | |
2089 | ecor = readb(addr + (ECOR << SMC_IO_SHIFT)) & ~ECOR_RESET; | |
2090 | writeb(ecor | ECOR_RESET, addr + (ECOR << SMC_IO_SHIFT)); | |
2091 | readb(addr + (ECOR << SMC_IO_SHIFT)); | |
2092 | ||
2093 | /* | |
2094 | * Wait 100us for the chip to reset. | |
2095 | */ | |
2096 | udelay(100); | |
2097 | ||
2098 | /* | |
2099 | * The device will ignore all writes to the enable bit while | |
2100 | * reset is asserted, even if the reset bit is cleared in the | |
2101 | * same write. Must clear reset first, then enable the device. | |
2102 | */ | |
2103 | writeb(ecor, addr + (ECOR << SMC_IO_SHIFT)); | |
2104 | writeb(ecor | ECOR_ENABLE, addr + (ECOR << SMC_IO_SHIFT)); | |
2105 | ||
2106 | /* | |
2107 | * Set the appropriate byte/word mode. | |
2108 | */ | |
2109 | ecsr = readb(addr + (ECSR << SMC_IO_SHIFT)) & ~ECSR_IOIS8; | |
2110 | #ifndef SMC_CAN_USE_16BIT | |
2111 | ecsr |= ECSR_IOIS8; | |
2112 | #endif | |
2113 | writeb(ecsr, addr + (ECSR << SMC_IO_SHIFT)); | |
2114 | local_irq_restore(flags); | |
2115 | ||
2116 | iounmap(addr); | |
2117 | ||
2118 | /* | |
2119 | * Wait for the chip to wake up. We could poll the control | |
2120 | * register in the main register space, but that isn't mapped | |
2121 | * yet. We know this is going to take 750us. | |
2122 | */ | |
2123 | msleep(1); | |
2124 | ||
2125 | return 0; | |
2126 | } | |
2127 | ||
2128 | static int smc_request_attrib(struct platform_device *pdev) | |
2129 | { | |
2130 | struct resource * res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-attrib"); | |
2131 | ||
2132 | if (!res) | |
2133 | return 0; | |
2134 | ||
2135 | if (!request_mem_region(res->start, ATTRIB_SIZE, CARDNAME)) | |
2136 | return -EBUSY; | |
2137 | ||
2138 | return 0; | |
2139 | } | |
2140 | ||
2141 | static void smc_release_attrib(struct platform_device *pdev) | |
2142 | { | |
2143 | struct resource * res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-attrib"); | |
2144 | ||
2145 | if (res) | |
2146 | release_mem_region(res->start, ATTRIB_SIZE); | |
2147 | } | |
2148 | ||
2149 | #ifdef SMC_CAN_USE_DATACS | |
2150 | static void smc_request_datacs(struct platform_device *pdev, struct net_device *ndev) | |
2151 | { | |
2152 | struct resource * res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-data32"); | |
2153 | struct smc_local *lp = netdev_priv(ndev); | |
2154 | ||
2155 | if (!res) | |
2156 | return; | |
2157 | ||
2158 | if(!request_mem_region(res->start, SMC_DATA_EXTENT, CARDNAME)) { | |
2159 | printk(KERN_INFO "%s: failed to request datacs memory region.\n", CARDNAME); | |
2160 | return; | |
2161 | } | |
2162 | ||
2163 | lp->datacs = ioremap(res->start, SMC_DATA_EXTENT); | |
2164 | } | |
2165 | ||
2166 | static void smc_release_datacs(struct platform_device *pdev, struct net_device *ndev) | |
2167 | { | |
2168 | struct smc_local *lp = netdev_priv(ndev); | |
2169 | struct resource * res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-data32"); | |
2170 | ||
2171 | if (lp->datacs) | |
2172 | iounmap(lp->datacs); | |
2173 | ||
2174 | lp->datacs = NULL; | |
2175 | ||
2176 | if (res) | |
2177 | release_mem_region(res->start, SMC_DATA_EXTENT); | |
2178 | } | |
2179 | #else | |
2180 | static void smc_request_datacs(struct platform_device *pdev, struct net_device *ndev) {} | |
2181 | static void smc_release_datacs(struct platform_device *pdev, struct net_device *ndev) {} | |
2182 | #endif | |
2183 | ||
2184 | /* | |
2185 | * smc_init(void) | |
2186 | * Input parameters: | |
2187 | * dev->base_addr == 0, try to find all possible locations | |
2188 | * dev->base_addr > 0x1ff, this is the address to check | |
2189 | * dev->base_addr == <anything else>, return failure code | |
2190 | * | |
2191 | * Output: | |
2192 | * 0 --> there is a device | |
2193 | * anything else, error | |
2194 | */ | |
3ae5eaec | 2195 | static int smc_drv_probe(struct platform_device *pdev) |
1da177e4 | 2196 | { |
1da177e4 LT |
2197 | struct net_device *ndev; |
2198 | struct resource *res; | |
2199 | unsigned int __iomem *addr; | |
2200 | int ret; | |
2201 | ||
2202 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-regs"); | |
2203 | if (!res) | |
2204 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
2205 | if (!res) { | |
2206 | ret = -ENODEV; | |
2207 | goto out; | |
2208 | } | |
2209 | ||
2210 | ||
2211 | if (!request_mem_region(res->start, SMC_IO_EXTENT, CARDNAME)) { | |
2212 | ret = -EBUSY; | |
2213 | goto out; | |
2214 | } | |
2215 | ||
2216 | ndev = alloc_etherdev(sizeof(struct smc_local)); | |
2217 | if (!ndev) { | |
2218 | printk("%s: could not allocate device.\n", CARDNAME); | |
2219 | ret = -ENOMEM; | |
2220 | goto out_release_io; | |
2221 | } | |
2222 | SET_MODULE_OWNER(ndev); | |
3ae5eaec | 2223 | SET_NETDEV_DEV(ndev, &pdev->dev); |
1da177e4 LT |
2224 | |
2225 | ndev->dma = (unsigned char)-1; | |
2226 | ndev->irq = platform_get_irq(pdev, 0); | |
2227 | ||
2228 | ret = smc_request_attrib(pdev); | |
2229 | if (ret) | |
2230 | goto out_free_netdev; | |
2231 | #if defined(CONFIG_SA1100_ASSABET) | |
2232 | NCR_0 |= NCR_ENET_OSC_EN; | |
2233 | #endif | |
2234 | ret = smc_enable_device(pdev); | |
2235 | if (ret) | |
2236 | goto out_release_attrib; | |
2237 | ||
2238 | addr = ioremap(res->start, SMC_IO_EXTENT); | |
2239 | if (!addr) { | |
2240 | ret = -ENOMEM; | |
2241 | goto out_release_attrib; | |
2242 | } | |
2243 | ||
3ae5eaec | 2244 | platform_set_drvdata(pdev, ndev); |
1da177e4 LT |
2245 | ret = smc_probe(ndev, addr); |
2246 | if (ret != 0) | |
2247 | goto out_iounmap; | |
2248 | #ifdef SMC_USE_PXA_DMA | |
2249 | else { | |
2250 | struct smc_local *lp = netdev_priv(ndev); | |
2251 | lp->physaddr = res->start; | |
2252 | } | |
2253 | #endif | |
2254 | ||
2255 | smc_request_datacs(pdev, ndev); | |
2256 | ||
2257 | return 0; | |
2258 | ||
2259 | out_iounmap: | |
3ae5eaec | 2260 | platform_set_drvdata(pdev, NULL); |
1da177e4 LT |
2261 | iounmap(addr); |
2262 | out_release_attrib: | |
2263 | smc_release_attrib(pdev); | |
2264 | out_free_netdev: | |
2265 | free_netdev(ndev); | |
2266 | out_release_io: | |
2267 | release_mem_region(res->start, SMC_IO_EXTENT); | |
2268 | out: | |
2269 | printk("%s: not found (%d).\n", CARDNAME, ret); | |
2270 | ||
2271 | return ret; | |
2272 | } | |
2273 | ||
3ae5eaec | 2274 | static int smc_drv_remove(struct platform_device *pdev) |
1da177e4 | 2275 | { |
3ae5eaec | 2276 | struct net_device *ndev = platform_get_drvdata(pdev); |
1da177e4 LT |
2277 | struct smc_local *lp = netdev_priv(ndev); |
2278 | struct resource *res; | |
2279 | ||
3ae5eaec | 2280 | platform_set_drvdata(pdev, NULL); |
1da177e4 LT |
2281 | |
2282 | unregister_netdev(ndev); | |
2283 | ||
2284 | free_irq(ndev->irq, ndev); | |
2285 | ||
2286 | #ifdef SMC_USE_PXA_DMA | |
2287 | if (ndev->dma != (unsigned char)-1) | |
2288 | pxa_free_dma(ndev->dma); | |
2289 | #endif | |
2290 | iounmap(lp->base); | |
2291 | ||
2292 | smc_release_datacs(pdev,ndev); | |
2293 | smc_release_attrib(pdev); | |
2294 | ||
2295 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-regs"); | |
2296 | if (!res) | |
2297 | platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
2298 | release_mem_region(res->start, SMC_IO_EXTENT); | |
2299 | ||
2300 | free_netdev(ndev); | |
2301 | ||
2302 | return 0; | |
2303 | } | |
2304 | ||
3ae5eaec | 2305 | static int smc_drv_suspend(struct platform_device *dev, pm_message_t state) |
1da177e4 | 2306 | { |
3ae5eaec | 2307 | struct net_device *ndev = platform_get_drvdata(dev); |
1da177e4 | 2308 | |
9480e307 | 2309 | if (ndev) { |
1da177e4 LT |
2310 | if (netif_running(ndev)) { |
2311 | netif_device_detach(ndev); | |
2312 | smc_shutdown(ndev); | |
2313 | smc_phy_powerdown(ndev); | |
2314 | } | |
2315 | } | |
2316 | return 0; | |
2317 | } | |
2318 | ||
3ae5eaec | 2319 | static int smc_drv_resume(struct platform_device *dev) |
1da177e4 | 2320 | { |
3ae5eaec | 2321 | struct net_device *ndev = platform_get_drvdata(dev); |
1da177e4 | 2322 | |
9480e307 | 2323 | if (ndev) { |
1da177e4 | 2324 | struct smc_local *lp = netdev_priv(ndev); |
3ae5eaec | 2325 | smc_enable_device(dev); |
1da177e4 LT |
2326 | if (netif_running(ndev)) { |
2327 | smc_reset(ndev); | |
2328 | smc_enable(ndev); | |
2329 | if (lp->phy_type != 0) | |
2330 | smc_phy_configure(ndev); | |
2331 | netif_device_attach(ndev); | |
2332 | } | |
2333 | } | |
2334 | return 0; | |
2335 | } | |
2336 | ||
3ae5eaec | 2337 | static struct platform_driver smc_driver = { |
1da177e4 LT |
2338 | .probe = smc_drv_probe, |
2339 | .remove = smc_drv_remove, | |
2340 | .suspend = smc_drv_suspend, | |
2341 | .resume = smc_drv_resume, | |
3ae5eaec RK |
2342 | .driver = { |
2343 | .name = CARDNAME, | |
2344 | }, | |
1da177e4 LT |
2345 | }; |
2346 | ||
2347 | static int __init smc_init(void) | |
2348 | { | |
2349 | #ifdef MODULE | |
2350 | #ifdef CONFIG_ISA | |
2351 | if (io == -1) | |
2352 | printk(KERN_WARNING | |
2353 | "%s: You shouldn't use auto-probing with insmod!\n", | |
2354 | CARDNAME); | |
2355 | #endif | |
2356 | #endif | |
2357 | ||
3ae5eaec | 2358 | return platform_driver_register(&smc_driver); |
1da177e4 LT |
2359 | } |
2360 | ||
2361 | static void __exit smc_cleanup(void) | |
2362 | { | |
3ae5eaec | 2363 | platform_driver_unregister(&smc_driver); |
1da177e4 LT |
2364 | } |
2365 | ||
2366 | module_init(smc_init); | |
2367 | module_exit(smc_cleanup); |