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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 | ||
1da177e4 LT |
69 | #include <linux/init.h> |
70 | #include <linux/module.h> | |
71 | #include <linux/kernel.h> | |
72 | #include <linux/sched.h> | |
73 | #include <linux/slab.h> | |
74 | #include <linux/delay.h> | |
75 | #include <linux/interrupt.h> | |
76 | #include <linux/errno.h> | |
77 | #include <linux/ioport.h> | |
78 | #include <linux/crc32.h> | |
d052d1be | 79 | #include <linux/platform_device.h> |
1da177e4 LT |
80 | #include <linux/spinlock.h> |
81 | #include <linux/ethtool.h> | |
82 | #include <linux/mii.h> | |
83 | #include <linux/workqueue.h> | |
84 | ||
85 | #include <linux/netdevice.h> | |
86 | #include <linux/etherdevice.h> | |
87 | #include <linux/skbuff.h> | |
88 | ||
89 | #include <asm/io.h> | |
1da177e4 LT |
90 | |
91 | #include "smc91x.h" | |
92 | ||
93 | #ifdef CONFIG_ISA | |
94 | /* | |
95 | * the LAN91C111 can be at any of the following port addresses. To change, | |
96 | * for a slightly different card, you can add it to the array. Keep in | |
97 | * mind that the array must end in zero. | |
98 | */ | |
99 | static unsigned int smc_portlist[] __initdata = { | |
100 | 0x200, 0x220, 0x240, 0x260, 0x280, 0x2A0, 0x2C0, 0x2E0, | |
101 | 0x300, 0x320, 0x340, 0x360, 0x380, 0x3A0, 0x3C0, 0x3E0, 0 | |
102 | }; | |
103 | ||
104 | #ifndef SMC_IOADDR | |
105 | # define SMC_IOADDR -1 | |
106 | #endif | |
107 | static unsigned long io = SMC_IOADDR; | |
108 | module_param(io, ulong, 0400); | |
109 | MODULE_PARM_DESC(io, "I/O base address"); | |
110 | ||
111 | #ifndef SMC_IRQ | |
112 | # define SMC_IRQ -1 | |
113 | #endif | |
114 | static int irq = SMC_IRQ; | |
115 | module_param(irq, int, 0400); | |
116 | MODULE_PARM_DESC(irq, "IRQ number"); | |
117 | ||
118 | #endif /* CONFIG_ISA */ | |
119 | ||
120 | #ifndef SMC_NOWAIT | |
121 | # define SMC_NOWAIT 0 | |
122 | #endif | |
123 | static int nowait = SMC_NOWAIT; | |
124 | module_param(nowait, int, 0400); | |
125 | MODULE_PARM_DESC(nowait, "set to 1 for no wait state"); | |
126 | ||
127 | /* | |
128 | * Transmit timeout, default 5 seconds. | |
129 | */ | |
ea937560 | 130 | static int watchdog = 1000; |
1da177e4 LT |
131 | module_param(watchdog, int, 0400); |
132 | MODULE_PARM_DESC(watchdog, "transmit timeout in milliseconds"); | |
133 | ||
134 | MODULE_LICENSE("GPL"); | |
135 | ||
136 | /* | |
137 | * The internal workings of the driver. If you are changing anything | |
138 | * here with the SMC stuff, you should have the datasheet and know | |
139 | * what you are doing. | |
140 | */ | |
141 | #define CARDNAME "smc91x" | |
142 | ||
143 | /* | |
144 | * Use power-down feature of the chip | |
145 | */ | |
146 | #define POWER_DOWN 1 | |
147 | ||
148 | /* | |
149 | * Wait time for memory to be free. This probably shouldn't be | |
150 | * tuned that much, as waiting for this means nothing else happens | |
151 | * in the system | |
152 | */ | |
153 | #define MEMORY_WAIT_TIME 16 | |
154 | ||
5d0571d9 NP |
155 | /* |
156 | * The maximum number of processing loops allowed for each call to the | |
6aa20a22 | 157 | * IRQ handler. |
5d0571d9 NP |
158 | */ |
159 | #define MAX_IRQ_LOOPS 8 | |
160 | ||
1da177e4 LT |
161 | /* |
162 | * This selects whether TX packets are sent one by one to the SMC91x internal | |
163 | * memory and throttled until transmission completes. This may prevent | |
164 | * RX overruns a litle by keeping much of the memory free for RX packets | |
165 | * but to the expense of reduced TX throughput and increased IRQ overhead. | |
166 | * Note this is not a cure for a too slow data bus or too high IRQ latency. | |
167 | */ | |
168 | #define THROTTLE_TX_PKTS 0 | |
169 | ||
170 | /* | |
171 | * The MII clock high/low times. 2x this number gives the MII clock period | |
172 | * in microseconds. (was 50, but this gives 6.4ms for each MII transaction!) | |
173 | */ | |
174 | #define MII_DELAY 1 | |
175 | ||
176 | /* store this information for the driver.. */ | |
177 | struct smc_local { | |
178 | /* | |
179 | * If I have to wait until memory is available to send a | |
180 | * packet, I will store the skbuff here, until I get the | |
181 | * desired memory. Then, I'll send it out and free it. | |
182 | */ | |
183 | struct sk_buff *pending_tx_skb; | |
184 | struct tasklet_struct tx_task; | |
185 | ||
186 | /* | |
187 | * these are things that the kernel wants me to keep, so users | |
188 | * can find out semi-useless statistics of how well the card is | |
189 | * performing | |
190 | */ | |
191 | struct net_device_stats stats; | |
192 | ||
193 | /* version/revision of the SMC91x chip */ | |
194 | int version; | |
195 | ||
196 | /* Contains the current active transmission mode */ | |
197 | int tcr_cur_mode; | |
198 | ||
199 | /* Contains the current active receive mode */ | |
200 | int rcr_cur_mode; | |
201 | ||
202 | /* Contains the current active receive/phy mode */ | |
203 | int rpc_cur_mode; | |
204 | int ctl_rfduplx; | |
205 | int ctl_rspeed; | |
206 | ||
207 | u32 msg_enable; | |
208 | u32 phy_type; | |
209 | struct mii_if_info mii; | |
210 | ||
211 | /* work queue */ | |
212 | struct work_struct phy_configure; | |
213 | int work_pending; | |
214 | ||
215 | spinlock_t lock; | |
216 | ||
1da177e4 LT |
217 | #ifdef SMC_USE_PXA_DMA |
218 | /* DMA needs the physical address of the chip */ | |
219 | u_long physaddr; | |
220 | #endif | |
221 | void __iomem *base; | |
09779c6d | 222 | void __iomem *datacs; |
1da177e4 LT |
223 | }; |
224 | ||
225 | #if SMC_DEBUG > 0 | |
226 | #define DBG(n, args...) \ | |
227 | do { \ | |
228 | if (SMC_DEBUG >= (n)) \ | |
229 | printk(args); \ | |
230 | } while (0) | |
231 | ||
232 | #define PRINTK(args...) printk(args) | |
233 | #else | |
234 | #define DBG(n, args...) do { } while(0) | |
235 | #define PRINTK(args...) printk(KERN_DEBUG args) | |
236 | #endif | |
237 | ||
238 | #if SMC_DEBUG > 3 | |
239 | static void PRINT_PKT(u_char *buf, int length) | |
240 | { | |
241 | int i; | |
242 | int remainder; | |
243 | int lines; | |
244 | ||
245 | lines = length / 16; | |
246 | remainder = length % 16; | |
247 | ||
248 | for (i = 0; i < lines ; i ++) { | |
249 | int cur; | |
250 | for (cur = 0; cur < 8; cur++) { | |
251 | u_char a, b; | |
252 | a = *buf++; | |
253 | b = *buf++; | |
254 | printk("%02x%02x ", a, b); | |
255 | } | |
256 | printk("\n"); | |
257 | } | |
258 | for (i = 0; i < remainder/2 ; i++) { | |
259 | u_char a, b; | |
260 | a = *buf++; | |
261 | b = *buf++; | |
262 | printk("%02x%02x ", a, b); | |
263 | } | |
264 | printk("\n"); | |
265 | } | |
266 | #else | |
267 | #define PRINT_PKT(x...) do { } while(0) | |
268 | #endif | |
269 | ||
270 | ||
271 | /* this enables an interrupt in the interrupt mask register */ | |
272 | #define SMC_ENABLE_INT(x) do { \ | |
273 | unsigned char mask; \ | |
274 | spin_lock_irq(&lp->lock); \ | |
275 | mask = SMC_GET_INT_MASK(); \ | |
276 | mask |= (x); \ | |
277 | SMC_SET_INT_MASK(mask); \ | |
278 | spin_unlock_irq(&lp->lock); \ | |
279 | } while (0) | |
280 | ||
281 | /* this disables an interrupt from the interrupt mask register */ | |
282 | #define SMC_DISABLE_INT(x) do { \ | |
283 | unsigned char mask; \ | |
284 | spin_lock_irq(&lp->lock); \ | |
285 | mask = SMC_GET_INT_MASK(); \ | |
286 | mask &= ~(x); \ | |
287 | SMC_SET_INT_MASK(mask); \ | |
288 | spin_unlock_irq(&lp->lock); \ | |
289 | } while (0) | |
290 | ||
291 | /* | |
292 | * Wait while MMU is busy. This is usually in the order of a few nanosecs | |
293 | * if at all, but let's avoid deadlocking the system if the hardware | |
294 | * decides to go south. | |
295 | */ | |
296 | #define SMC_WAIT_MMU_BUSY() do { \ | |
297 | if (unlikely(SMC_GET_MMU_CMD() & MC_BUSY)) { \ | |
298 | unsigned long timeout = jiffies + 2; \ | |
299 | while (SMC_GET_MMU_CMD() & MC_BUSY) { \ | |
300 | if (time_after(jiffies, timeout)) { \ | |
301 | printk("%s: timeout %s line %d\n", \ | |
302 | dev->name, __FILE__, __LINE__); \ | |
303 | break; \ | |
304 | } \ | |
305 | cpu_relax(); \ | |
306 | } \ | |
307 | } \ | |
308 | } while (0) | |
309 | ||
310 | ||
311 | /* | |
312 | * this does a soft reset on the device | |
313 | */ | |
314 | static void smc_reset(struct net_device *dev) | |
315 | { | |
316 | struct smc_local *lp = netdev_priv(dev); | |
317 | void __iomem *ioaddr = lp->base; | |
318 | unsigned int ctl, cfg; | |
be83668a | 319 | struct sk_buff *pending_skb; |
1da177e4 LT |
320 | |
321 | DBG(2, "%s: %s\n", dev->name, __FUNCTION__); | |
322 | ||
be83668a | 323 | /* Disable all interrupts, block TX tasklet */ |
76cb4fe7 | 324 | spin_lock_irq(&lp->lock); |
1da177e4 LT |
325 | SMC_SELECT_BANK(2); |
326 | SMC_SET_INT_MASK(0); | |
be83668a NP |
327 | pending_skb = lp->pending_tx_skb; |
328 | lp->pending_tx_skb = NULL; | |
76cb4fe7 | 329 | spin_unlock_irq(&lp->lock); |
1da177e4 | 330 | |
be83668a NP |
331 | /* free any pending tx skb */ |
332 | if (pending_skb) { | |
333 | dev_kfree_skb(pending_skb); | |
334 | lp->stats.tx_errors++; | |
335 | lp->stats.tx_aborted_errors++; | |
336 | } | |
337 | ||
1da177e4 LT |
338 | /* |
339 | * This resets the registers mostly to defaults, but doesn't | |
340 | * affect EEPROM. That seems unnecessary | |
341 | */ | |
342 | SMC_SELECT_BANK(0); | |
343 | SMC_SET_RCR(RCR_SOFTRST); | |
344 | ||
345 | /* | |
346 | * Setup the Configuration Register | |
347 | * This is necessary because the CONFIG_REG is not affected | |
348 | * by a soft reset | |
349 | */ | |
350 | SMC_SELECT_BANK(1); | |
351 | ||
352 | cfg = CONFIG_DEFAULT; | |
353 | ||
354 | /* | |
355 | * Setup for fast accesses if requested. If the card/system | |
356 | * can't handle it then there will be no recovery except for | |
357 | * a hard reset or power cycle | |
358 | */ | |
359 | if (nowait) | |
360 | cfg |= CONFIG_NO_WAIT; | |
361 | ||
362 | /* | |
363 | * Release from possible power-down state | |
364 | * Configuration register is not affected by Soft Reset | |
365 | */ | |
366 | cfg |= CONFIG_EPH_POWER_EN; | |
367 | ||
368 | SMC_SET_CONFIG(cfg); | |
369 | ||
370 | /* this should pause enough for the chip to be happy */ | |
371 | /* | |
372 | * elaborate? What does the chip _need_? --jgarzik | |
373 | * | |
374 | * This seems to be undocumented, but something the original | |
375 | * driver(s) have always done. Suspect undocumented timing | |
376 | * info/determined empirically. --rmk | |
377 | */ | |
378 | udelay(1); | |
379 | ||
380 | /* Disable transmit and receive functionality */ | |
381 | SMC_SELECT_BANK(0); | |
382 | SMC_SET_RCR(RCR_CLEAR); | |
383 | SMC_SET_TCR(TCR_CLEAR); | |
384 | ||
385 | SMC_SELECT_BANK(1); | |
386 | ctl = SMC_GET_CTL() | CTL_LE_ENABLE; | |
387 | ||
388 | /* | |
389 | * Set the control register to automatically release successfully | |
390 | * transmitted packets, to make the best use out of our limited | |
391 | * memory | |
392 | */ | |
393 | if(!THROTTLE_TX_PKTS) | |
394 | ctl |= CTL_AUTO_RELEASE; | |
395 | else | |
396 | ctl &= ~CTL_AUTO_RELEASE; | |
397 | SMC_SET_CTL(ctl); | |
398 | ||
399 | /* Reset the MMU */ | |
400 | SMC_SELECT_BANK(2); | |
401 | SMC_SET_MMU_CMD(MC_RESET); | |
402 | SMC_WAIT_MMU_BUSY(); | |
1da177e4 LT |
403 | } |
404 | ||
405 | /* | |
406 | * Enable Interrupts, Receive, and Transmit | |
407 | */ | |
408 | static void smc_enable(struct net_device *dev) | |
409 | { | |
410 | struct smc_local *lp = netdev_priv(dev); | |
411 | void __iomem *ioaddr = lp->base; | |
412 | int mask; | |
413 | ||
414 | DBG(2, "%s: %s\n", dev->name, __FUNCTION__); | |
415 | ||
416 | /* see the header file for options in TCR/RCR DEFAULT */ | |
417 | SMC_SELECT_BANK(0); | |
418 | SMC_SET_TCR(lp->tcr_cur_mode); | |
419 | SMC_SET_RCR(lp->rcr_cur_mode); | |
420 | ||
421 | SMC_SELECT_BANK(1); | |
422 | SMC_SET_MAC_ADDR(dev->dev_addr); | |
423 | ||
424 | /* now, enable interrupts */ | |
425 | mask = IM_EPH_INT|IM_RX_OVRN_INT|IM_RCV_INT; | |
426 | if (lp->version >= (CHIP_91100 << 4)) | |
427 | mask |= IM_MDINT; | |
428 | SMC_SELECT_BANK(2); | |
429 | SMC_SET_INT_MASK(mask); | |
430 | ||
431 | /* | |
432 | * From this point the register bank must _NOT_ be switched away | |
433 | * to something else than bank 2 without proper locking against | |
434 | * races with any tasklet or interrupt handlers until smc_shutdown() | |
435 | * or smc_reset() is called. | |
436 | */ | |
437 | } | |
438 | ||
439 | /* | |
440 | * this puts the device in an inactive state | |
441 | */ | |
442 | static void smc_shutdown(struct net_device *dev) | |
443 | { | |
444 | struct smc_local *lp = netdev_priv(dev); | |
445 | void __iomem *ioaddr = lp->base; | |
be83668a | 446 | struct sk_buff *pending_skb; |
1da177e4 LT |
447 | |
448 | DBG(2, "%s: %s\n", CARDNAME, __FUNCTION__); | |
449 | ||
450 | /* no more interrupts for me */ | |
76cb4fe7 | 451 | spin_lock_irq(&lp->lock); |
1da177e4 LT |
452 | SMC_SELECT_BANK(2); |
453 | SMC_SET_INT_MASK(0); | |
be83668a NP |
454 | pending_skb = lp->pending_tx_skb; |
455 | lp->pending_tx_skb = NULL; | |
76cb4fe7 | 456 | spin_unlock_irq(&lp->lock); |
be83668a NP |
457 | if (pending_skb) |
458 | dev_kfree_skb(pending_skb); | |
1da177e4 LT |
459 | |
460 | /* and tell the card to stay away from that nasty outside world */ | |
461 | SMC_SELECT_BANK(0); | |
462 | SMC_SET_RCR(RCR_CLEAR); | |
463 | SMC_SET_TCR(TCR_CLEAR); | |
464 | ||
465 | #ifdef POWER_DOWN | |
466 | /* finally, shut the chip down */ | |
467 | SMC_SELECT_BANK(1); | |
468 | SMC_SET_CONFIG(SMC_GET_CONFIG() & ~CONFIG_EPH_POWER_EN); | |
469 | #endif | |
470 | } | |
471 | ||
472 | /* | |
473 | * This is the procedure to handle the receipt of a packet. | |
474 | */ | |
475 | static inline void smc_rcv(struct net_device *dev) | |
476 | { | |
477 | struct smc_local *lp = netdev_priv(dev); | |
478 | void __iomem *ioaddr = lp->base; | |
479 | unsigned int packet_number, status, packet_len; | |
480 | ||
481 | DBG(3, "%s: %s\n", dev->name, __FUNCTION__); | |
482 | ||
483 | packet_number = SMC_GET_RXFIFO(); | |
484 | if (unlikely(packet_number & RXFIFO_REMPTY)) { | |
485 | PRINTK("%s: smc_rcv with nothing on FIFO.\n", dev->name); | |
486 | return; | |
487 | } | |
488 | ||
489 | /* read from start of packet */ | |
490 | SMC_SET_PTR(PTR_READ | PTR_RCV | PTR_AUTOINC); | |
491 | ||
492 | /* First two words are status and packet length */ | |
493 | SMC_GET_PKT_HDR(status, packet_len); | |
494 | packet_len &= 0x07ff; /* mask off top bits */ | |
495 | DBG(2, "%s: RX PNR 0x%x STATUS 0x%04x LENGTH 0x%04x (%d)\n", | |
496 | dev->name, packet_number, status, | |
497 | packet_len, packet_len); | |
498 | ||
499 | back: | |
500 | if (unlikely(packet_len < 6 || status & RS_ERRORS)) { | |
501 | if (status & RS_TOOLONG && packet_len <= (1514 + 4 + 6)) { | |
502 | /* accept VLAN packets */ | |
503 | status &= ~RS_TOOLONG; | |
504 | goto back; | |
505 | } | |
506 | if (packet_len < 6) { | |
507 | /* bloody hardware */ | |
508 | printk(KERN_ERR "%s: fubar (rxlen %u status %x\n", | |
509 | dev->name, packet_len, status); | |
510 | status |= RS_TOOSHORT; | |
511 | } | |
512 | SMC_WAIT_MMU_BUSY(); | |
513 | SMC_SET_MMU_CMD(MC_RELEASE); | |
514 | lp->stats.rx_errors++; | |
515 | if (status & RS_ALGNERR) | |
516 | lp->stats.rx_frame_errors++; | |
517 | if (status & (RS_TOOSHORT | RS_TOOLONG)) | |
518 | lp->stats.rx_length_errors++; | |
519 | if (status & RS_BADCRC) | |
520 | lp->stats.rx_crc_errors++; | |
521 | } else { | |
522 | struct sk_buff *skb; | |
523 | unsigned char *data; | |
524 | unsigned int data_len; | |
525 | ||
526 | /* set multicast stats */ | |
527 | if (status & RS_MULTICAST) | |
528 | lp->stats.multicast++; | |
529 | ||
530 | /* | |
531 | * Actual payload is packet_len - 6 (or 5 if odd byte). | |
532 | * We want skb_reserve(2) and the final ctrl word | |
533 | * (2 bytes, possibly containing the payload odd byte). | |
534 | * Furthermore, we add 2 bytes to allow rounding up to | |
535 | * multiple of 4 bytes on 32 bit buses. | |
536 | * Hence packet_len - 6 + 2 + 2 + 2. | |
537 | */ | |
538 | skb = dev_alloc_skb(packet_len); | |
539 | if (unlikely(skb == NULL)) { | |
540 | printk(KERN_NOTICE "%s: Low memory, packet dropped.\n", | |
541 | dev->name); | |
542 | SMC_WAIT_MMU_BUSY(); | |
543 | SMC_SET_MMU_CMD(MC_RELEASE); | |
544 | lp->stats.rx_dropped++; | |
545 | return; | |
546 | } | |
547 | ||
548 | /* Align IP header to 32 bits */ | |
549 | skb_reserve(skb, 2); | |
550 | ||
551 | /* BUG: the LAN91C111 rev A never sets this bit. Force it. */ | |
552 | if (lp->version == 0x90) | |
553 | status |= RS_ODDFRAME; | |
554 | ||
555 | /* | |
556 | * If odd length: packet_len - 5, | |
557 | * otherwise packet_len - 6. | |
558 | * With the trailing ctrl byte it's packet_len - 4. | |
559 | */ | |
560 | data_len = packet_len - ((status & RS_ODDFRAME) ? 5 : 6); | |
561 | data = skb_put(skb, data_len); | |
562 | SMC_PULL_DATA(data, packet_len - 4); | |
563 | ||
564 | SMC_WAIT_MMU_BUSY(); | |
565 | SMC_SET_MMU_CMD(MC_RELEASE); | |
566 | ||
567 | PRINT_PKT(data, packet_len - 4); | |
568 | ||
569 | dev->last_rx = jiffies; | |
570 | skb->dev = dev; | |
571 | skb->protocol = eth_type_trans(skb, dev); | |
572 | netif_rx(skb); | |
573 | lp->stats.rx_packets++; | |
574 | lp->stats.rx_bytes += data_len; | |
575 | } | |
576 | } | |
577 | ||
578 | #ifdef CONFIG_SMP | |
579 | /* | |
580 | * On SMP we have the following problem: | |
581 | * | |
582 | * A = smc_hardware_send_pkt() | |
583 | * B = smc_hard_start_xmit() | |
584 | * C = smc_interrupt() | |
585 | * | |
586 | * A and B can never be executed simultaneously. However, at least on UP, | |
587 | * it is possible (and even desirable) for C to interrupt execution of | |
588 | * A or B in order to have better RX reliability and avoid overruns. | |
589 | * C, just like A and B, must have exclusive access to the chip and | |
590 | * each of them must lock against any other concurrent access. | |
591 | * Unfortunately this is not possible to have C suspend execution of A or | |
592 | * B taking place on another CPU. On UP this is no an issue since A and B | |
593 | * are run from softirq context and C from hard IRQ context, and there is | |
594 | * no other CPU where concurrent access can happen. | |
595 | * If ever there is a way to force at least B and C to always be executed | |
596 | * on the same CPU then we could use read/write locks to protect against | |
597 | * any other concurrent access and C would always interrupt B. But life | |
598 | * isn't that easy in a SMP world... | |
599 | */ | |
600 | #define smc_special_trylock(lock) \ | |
601 | ({ \ | |
602 | int __ret; \ | |
603 | local_irq_disable(); \ | |
604 | __ret = spin_trylock(lock); \ | |
605 | if (!__ret) \ | |
606 | local_irq_enable(); \ | |
607 | __ret; \ | |
608 | }) | |
609 | #define smc_special_lock(lock) spin_lock_irq(lock) | |
610 | #define smc_special_unlock(lock) spin_unlock_irq(lock) | |
611 | #else | |
612 | #define smc_special_trylock(lock) (1) | |
613 | #define smc_special_lock(lock) do { } while (0) | |
614 | #define smc_special_unlock(lock) do { } while (0) | |
615 | #endif | |
616 | ||
617 | /* | |
618 | * This is called to actually send a packet to the chip. | |
619 | */ | |
620 | static void smc_hardware_send_pkt(unsigned long data) | |
621 | { | |
622 | struct net_device *dev = (struct net_device *)data; | |
623 | struct smc_local *lp = netdev_priv(dev); | |
624 | void __iomem *ioaddr = lp->base; | |
625 | struct sk_buff *skb; | |
626 | unsigned int packet_no, len; | |
627 | unsigned char *buf; | |
628 | ||
629 | DBG(3, "%s: %s\n", dev->name, __FUNCTION__); | |
630 | ||
631 | if (!smc_special_trylock(&lp->lock)) { | |
632 | netif_stop_queue(dev); | |
633 | tasklet_schedule(&lp->tx_task); | |
634 | return; | |
635 | } | |
636 | ||
637 | skb = lp->pending_tx_skb; | |
be83668a NP |
638 | if (unlikely(!skb)) { |
639 | smc_special_unlock(&lp->lock); | |
640 | return; | |
641 | } | |
1da177e4 | 642 | lp->pending_tx_skb = NULL; |
be83668a | 643 | |
1da177e4 LT |
644 | packet_no = SMC_GET_AR(); |
645 | if (unlikely(packet_no & AR_FAILED)) { | |
646 | printk("%s: Memory allocation failed.\n", dev->name); | |
647 | lp->stats.tx_errors++; | |
648 | lp->stats.tx_fifo_errors++; | |
649 | smc_special_unlock(&lp->lock); | |
650 | goto done; | |
651 | } | |
652 | ||
653 | /* point to the beginning of the packet */ | |
654 | SMC_SET_PN(packet_no); | |
655 | SMC_SET_PTR(PTR_AUTOINC); | |
656 | ||
657 | buf = skb->data; | |
658 | len = skb->len; | |
659 | DBG(2, "%s: TX PNR 0x%x LENGTH 0x%04x (%d) BUF 0x%p\n", | |
660 | dev->name, packet_no, len, len, buf); | |
661 | PRINT_PKT(buf, len); | |
662 | ||
663 | /* | |
664 | * Send the packet length (+6 for status words, length, and ctl. | |
665 | * The card will pad to 64 bytes with zeroes if packet is too small. | |
666 | */ | |
667 | SMC_PUT_PKT_HDR(0, len + 6); | |
668 | ||
669 | /* send the actual data */ | |
670 | SMC_PUSH_DATA(buf, len & ~1); | |
671 | ||
672 | /* Send final ctl word with the last byte if there is one */ | |
673 | SMC_outw(((len & 1) ? (0x2000 | buf[len-1]) : 0), ioaddr, DATA_REG); | |
674 | ||
675 | /* | |
ea937560 NP |
676 | * If THROTTLE_TX_PKTS is set, we stop the queue here. This will |
677 | * have the effect of having at most one packet queued for TX | |
678 | * in the chip's memory at all time. | |
679 | * | |
680 | * If THROTTLE_TX_PKTS is not set then the queue is stopped only | |
681 | * when memory allocation (MC_ALLOC) does not succeed right away. | |
1da177e4 | 682 | */ |
ea937560 | 683 | if (THROTTLE_TX_PKTS) |
1da177e4 LT |
684 | netif_stop_queue(dev); |
685 | ||
686 | /* queue the packet for TX */ | |
687 | SMC_SET_MMU_CMD(MC_ENQUEUE); | |
1da177e4 LT |
688 | smc_special_unlock(&lp->lock); |
689 | ||
690 | dev->trans_start = jiffies; | |
691 | lp->stats.tx_packets++; | |
692 | lp->stats.tx_bytes += len; | |
693 | ||
694 | SMC_ENABLE_INT(IM_TX_INT | IM_TX_EMPTY_INT); | |
695 | ||
696 | done: if (!THROTTLE_TX_PKTS) | |
697 | netif_wake_queue(dev); | |
698 | ||
699 | dev_kfree_skb(skb); | |
700 | } | |
701 | ||
702 | /* | |
703 | * Since I am not sure if I will have enough room in the chip's ram | |
704 | * to store the packet, I call this routine which either sends it | |
705 | * now, or set the card to generates an interrupt when ready | |
706 | * for the packet. | |
707 | */ | |
708 | static int smc_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
709 | { | |
710 | struct smc_local *lp = netdev_priv(dev); | |
711 | void __iomem *ioaddr = lp->base; | |
712 | unsigned int numPages, poll_count, status; | |
713 | ||
714 | DBG(3, "%s: %s\n", dev->name, __FUNCTION__); | |
715 | ||
716 | BUG_ON(lp->pending_tx_skb != NULL); | |
1da177e4 LT |
717 | |
718 | /* | |
719 | * The MMU wants the number of pages to be the number of 256 bytes | |
720 | * 'pages', minus 1 (since a packet can't ever have 0 pages :)) | |
721 | * | |
722 | * The 91C111 ignores the size bits, but earlier models don't. | |
723 | * | |
724 | * Pkt size for allocating is data length +6 (for additional status | |
725 | * words, length and ctl) | |
726 | * | |
727 | * If odd size then last byte is included in ctl word. | |
728 | */ | |
729 | numPages = ((skb->len & ~1) + (6 - 1)) >> 8; | |
730 | if (unlikely(numPages > 7)) { | |
731 | printk("%s: Far too big packet error.\n", dev->name); | |
1da177e4 LT |
732 | lp->stats.tx_errors++; |
733 | lp->stats.tx_dropped++; | |
734 | dev_kfree_skb(skb); | |
735 | return 0; | |
736 | } | |
737 | ||
738 | smc_special_lock(&lp->lock); | |
739 | ||
740 | /* now, try to allocate the memory */ | |
741 | SMC_SET_MMU_CMD(MC_ALLOC | numPages); | |
742 | ||
743 | /* | |
744 | * Poll the chip for a short amount of time in case the | |
745 | * allocation succeeds quickly. | |
746 | */ | |
747 | poll_count = MEMORY_WAIT_TIME; | |
748 | do { | |
749 | status = SMC_GET_INT(); | |
750 | if (status & IM_ALLOC_INT) { | |
751 | SMC_ACK_INT(IM_ALLOC_INT); | |
752 | break; | |
753 | } | |
754 | } while (--poll_count); | |
755 | ||
756 | smc_special_unlock(&lp->lock); | |
757 | ||
be83668a | 758 | lp->pending_tx_skb = skb; |
1da177e4 LT |
759 | if (!poll_count) { |
760 | /* oh well, wait until the chip finds memory later */ | |
761 | netif_stop_queue(dev); | |
762 | DBG(2, "%s: TX memory allocation deferred.\n", dev->name); | |
763 | SMC_ENABLE_INT(IM_ALLOC_INT); | |
764 | } else { | |
765 | /* | |
766 | * Allocation succeeded: push packet to the chip's own memory | |
767 | * immediately. | |
6aa20a22 | 768 | */ |
1da177e4 LT |
769 | smc_hardware_send_pkt((unsigned long)dev); |
770 | } | |
771 | ||
772 | return 0; | |
773 | } | |
774 | ||
775 | /* | |
776 | * This handles a TX interrupt, which is only called when: | |
777 | * - a TX error occurred, or | |
778 | * - CTL_AUTO_RELEASE is not set and TX of a packet completed. | |
779 | */ | |
780 | static void smc_tx(struct net_device *dev) | |
781 | { | |
782 | struct smc_local *lp = netdev_priv(dev); | |
783 | void __iomem *ioaddr = lp->base; | |
784 | unsigned int saved_packet, packet_no, tx_status, pkt_len; | |
785 | ||
786 | DBG(3, "%s: %s\n", dev->name, __FUNCTION__); | |
787 | ||
788 | /* If the TX FIFO is empty then nothing to do */ | |
789 | packet_no = SMC_GET_TXFIFO(); | |
790 | if (unlikely(packet_no & TXFIFO_TEMPTY)) { | |
791 | PRINTK("%s: smc_tx with nothing on FIFO.\n", dev->name); | |
792 | return; | |
793 | } | |
794 | ||
795 | /* select packet to read from */ | |
796 | saved_packet = SMC_GET_PN(); | |
797 | SMC_SET_PN(packet_no); | |
798 | ||
799 | /* read the first word (status word) from this packet */ | |
800 | SMC_SET_PTR(PTR_AUTOINC | PTR_READ); | |
801 | SMC_GET_PKT_HDR(tx_status, pkt_len); | |
802 | DBG(2, "%s: TX STATUS 0x%04x PNR 0x%02x\n", | |
803 | dev->name, tx_status, packet_no); | |
804 | ||
8de90115 | 805 | if (!(tx_status & ES_TX_SUC)) |
1da177e4 | 806 | lp->stats.tx_errors++; |
8de90115 NP |
807 | |
808 | if (tx_status & ES_LOSTCARR) | |
1da177e4 LT |
809 | lp->stats.tx_carrier_errors++; |
810 | ||
8de90115 NP |
811 | if (tx_status & (ES_LATCOL | ES_16COL)) { |
812 | PRINTK("%s: %s occurred on last xmit\n", dev->name, | |
813 | (tx_status & ES_LATCOL) ? | |
814 | "late collision" : "too many collisions"); | |
1da177e4 LT |
815 | lp->stats.tx_window_errors++; |
816 | if (!(lp->stats.tx_window_errors & 63) && net_ratelimit()) { | |
8de90115 NP |
817 | printk(KERN_INFO "%s: unexpectedly large number of " |
818 | "bad collisions. Please check duplex " | |
1da177e4 LT |
819 | "setting.\n", dev->name); |
820 | } | |
821 | } | |
822 | ||
823 | /* kill the packet */ | |
824 | SMC_WAIT_MMU_BUSY(); | |
825 | SMC_SET_MMU_CMD(MC_FREEPKT); | |
826 | ||
827 | /* Don't restore Packet Number Reg until busy bit is cleared */ | |
828 | SMC_WAIT_MMU_BUSY(); | |
829 | SMC_SET_PN(saved_packet); | |
830 | ||
831 | /* re-enable transmit */ | |
832 | SMC_SELECT_BANK(0); | |
833 | SMC_SET_TCR(lp->tcr_cur_mode); | |
834 | SMC_SELECT_BANK(2); | |
835 | } | |
836 | ||
837 | ||
838 | /*---PHY CONTROL AND CONFIGURATION-----------------------------------------*/ | |
839 | ||
840 | static void smc_mii_out(struct net_device *dev, unsigned int val, int bits) | |
841 | { | |
842 | struct smc_local *lp = netdev_priv(dev); | |
843 | void __iomem *ioaddr = lp->base; | |
844 | unsigned int mii_reg, mask; | |
845 | ||
846 | mii_reg = SMC_GET_MII() & ~(MII_MCLK | MII_MDOE | MII_MDO); | |
847 | mii_reg |= MII_MDOE; | |
848 | ||
849 | for (mask = 1 << (bits - 1); mask; mask >>= 1) { | |
850 | if (val & mask) | |
851 | mii_reg |= MII_MDO; | |
852 | else | |
853 | mii_reg &= ~MII_MDO; | |
854 | ||
855 | SMC_SET_MII(mii_reg); | |
856 | udelay(MII_DELAY); | |
857 | SMC_SET_MII(mii_reg | MII_MCLK); | |
858 | udelay(MII_DELAY); | |
859 | } | |
860 | } | |
861 | ||
862 | static unsigned int smc_mii_in(struct net_device *dev, int bits) | |
863 | { | |
864 | struct smc_local *lp = netdev_priv(dev); | |
865 | void __iomem *ioaddr = lp->base; | |
866 | unsigned int mii_reg, mask, val; | |
867 | ||
868 | mii_reg = SMC_GET_MII() & ~(MII_MCLK | MII_MDOE | MII_MDO); | |
869 | SMC_SET_MII(mii_reg); | |
870 | ||
871 | for (mask = 1 << (bits - 1), val = 0; mask; mask >>= 1) { | |
872 | if (SMC_GET_MII() & MII_MDI) | |
873 | val |= mask; | |
874 | ||
875 | SMC_SET_MII(mii_reg); | |
876 | udelay(MII_DELAY); | |
877 | SMC_SET_MII(mii_reg | MII_MCLK); | |
878 | udelay(MII_DELAY); | |
879 | } | |
880 | ||
881 | return val; | |
882 | } | |
883 | ||
884 | /* | |
885 | * Reads a register from the MII Management serial interface | |
886 | */ | |
887 | static int smc_phy_read(struct net_device *dev, int phyaddr, int phyreg) | |
888 | { | |
889 | struct smc_local *lp = netdev_priv(dev); | |
890 | void __iomem *ioaddr = lp->base; | |
891 | unsigned int phydata; | |
892 | ||
893 | SMC_SELECT_BANK(3); | |
894 | ||
895 | /* Idle - 32 ones */ | |
896 | smc_mii_out(dev, 0xffffffff, 32); | |
897 | ||
898 | /* Start code (01) + read (10) + phyaddr + phyreg */ | |
899 | smc_mii_out(dev, 6 << 10 | phyaddr << 5 | phyreg, 14); | |
900 | ||
901 | /* Turnaround (2bits) + phydata */ | |
902 | phydata = smc_mii_in(dev, 18); | |
903 | ||
904 | /* Return to idle state */ | |
905 | SMC_SET_MII(SMC_GET_MII() & ~(MII_MCLK|MII_MDOE|MII_MDO)); | |
906 | ||
907 | DBG(3, "%s: phyaddr=0x%x, phyreg=0x%x, phydata=0x%x\n", | |
908 | __FUNCTION__, phyaddr, phyreg, phydata); | |
909 | ||
910 | SMC_SELECT_BANK(2); | |
911 | return phydata; | |
912 | } | |
913 | ||
914 | /* | |
915 | * Writes a register to the MII Management serial interface | |
916 | */ | |
917 | static void smc_phy_write(struct net_device *dev, int phyaddr, int phyreg, | |
918 | int phydata) | |
919 | { | |
920 | struct smc_local *lp = netdev_priv(dev); | |
921 | void __iomem *ioaddr = lp->base; | |
922 | ||
923 | SMC_SELECT_BANK(3); | |
924 | ||
925 | /* Idle - 32 ones */ | |
926 | smc_mii_out(dev, 0xffffffff, 32); | |
927 | ||
928 | /* Start code (01) + write (01) + phyaddr + phyreg + turnaround + phydata */ | |
929 | smc_mii_out(dev, 5 << 28 | phyaddr << 23 | phyreg << 18 | 2 << 16 | phydata, 32); | |
930 | ||
931 | /* Return to idle state */ | |
932 | SMC_SET_MII(SMC_GET_MII() & ~(MII_MCLK|MII_MDOE|MII_MDO)); | |
933 | ||
934 | DBG(3, "%s: phyaddr=0x%x, phyreg=0x%x, phydata=0x%x\n", | |
935 | __FUNCTION__, phyaddr, phyreg, phydata); | |
936 | ||
937 | SMC_SELECT_BANK(2); | |
938 | } | |
939 | ||
940 | /* | |
941 | * Finds and reports the PHY address | |
942 | */ | |
943 | static void smc_phy_detect(struct net_device *dev) | |
944 | { | |
945 | struct smc_local *lp = netdev_priv(dev); | |
946 | int phyaddr; | |
947 | ||
948 | DBG(2, "%s: %s\n", dev->name, __FUNCTION__); | |
949 | ||
950 | lp->phy_type = 0; | |
951 | ||
952 | /* | |
953 | * Scan all 32 PHY addresses if necessary, starting at | |
954 | * PHY#1 to PHY#31, and then PHY#0 last. | |
955 | */ | |
956 | for (phyaddr = 1; phyaddr < 33; ++phyaddr) { | |
957 | unsigned int id1, id2; | |
958 | ||
959 | /* Read the PHY identifiers */ | |
960 | id1 = smc_phy_read(dev, phyaddr & 31, MII_PHYSID1); | |
961 | id2 = smc_phy_read(dev, phyaddr & 31, MII_PHYSID2); | |
962 | ||
963 | DBG(3, "%s: phy_id1=0x%x, phy_id2=0x%x\n", | |
964 | dev->name, id1, id2); | |
965 | ||
966 | /* Make sure it is a valid identifier */ | |
967 | if (id1 != 0x0000 && id1 != 0xffff && id1 != 0x8000 && | |
968 | id2 != 0x0000 && id2 != 0xffff && id2 != 0x8000) { | |
969 | /* Save the PHY's address */ | |
970 | lp->mii.phy_id = phyaddr & 31; | |
971 | lp->phy_type = id1 << 16 | id2; | |
972 | break; | |
973 | } | |
974 | } | |
975 | } | |
976 | ||
977 | /* | |
978 | * Sets the PHY to a configuration as determined by the user | |
979 | */ | |
980 | static int smc_phy_fixed(struct net_device *dev) | |
981 | { | |
982 | struct smc_local *lp = netdev_priv(dev); | |
983 | void __iomem *ioaddr = lp->base; | |
984 | int phyaddr = lp->mii.phy_id; | |
985 | int bmcr, cfg1; | |
986 | ||
987 | DBG(3, "%s: %s\n", dev->name, __FUNCTION__); | |
988 | ||
989 | /* Enter Link Disable state */ | |
990 | cfg1 = smc_phy_read(dev, phyaddr, PHY_CFG1_REG); | |
991 | cfg1 |= PHY_CFG1_LNKDIS; | |
992 | smc_phy_write(dev, phyaddr, PHY_CFG1_REG, cfg1); | |
993 | ||
994 | /* | |
995 | * Set our fixed capabilities | |
996 | * Disable auto-negotiation | |
997 | */ | |
998 | bmcr = 0; | |
999 | ||
1000 | if (lp->ctl_rfduplx) | |
1001 | bmcr |= BMCR_FULLDPLX; | |
1002 | ||
1003 | if (lp->ctl_rspeed == 100) | |
1004 | bmcr |= BMCR_SPEED100; | |
1005 | ||
1006 | /* Write our capabilities to the phy control register */ | |
1007 | smc_phy_write(dev, phyaddr, MII_BMCR, bmcr); | |
1008 | ||
1009 | /* Re-Configure the Receive/Phy Control register */ | |
1010 | SMC_SELECT_BANK(0); | |
1011 | SMC_SET_RPC(lp->rpc_cur_mode); | |
1012 | SMC_SELECT_BANK(2); | |
1013 | ||
1014 | return 1; | |
1015 | } | |
1016 | ||
1017 | /* | |
1018 | * smc_phy_reset - reset the phy | |
1019 | * @dev: net device | |
1020 | * @phy: phy address | |
1021 | * | |
1022 | * Issue a software reset for the specified PHY and | |
1023 | * wait up to 100ms for the reset to complete. We should | |
1024 | * not access the PHY for 50ms after issuing the reset. | |
1025 | * | |
1026 | * The time to wait appears to be dependent on the PHY. | |
1027 | * | |
1028 | * Must be called with lp->lock locked. | |
1029 | */ | |
1030 | static int smc_phy_reset(struct net_device *dev, int phy) | |
1031 | { | |
1032 | struct smc_local *lp = netdev_priv(dev); | |
1033 | unsigned int bmcr; | |
1034 | int timeout; | |
1035 | ||
1036 | smc_phy_write(dev, phy, MII_BMCR, BMCR_RESET); | |
1037 | ||
1038 | for (timeout = 2; timeout; timeout--) { | |
1039 | spin_unlock_irq(&lp->lock); | |
1040 | msleep(50); | |
1041 | spin_lock_irq(&lp->lock); | |
1042 | ||
1043 | bmcr = smc_phy_read(dev, phy, MII_BMCR); | |
1044 | if (!(bmcr & BMCR_RESET)) | |
1045 | break; | |
1046 | } | |
1047 | ||
1048 | return bmcr & BMCR_RESET; | |
1049 | } | |
1050 | ||
1051 | /* | |
1052 | * smc_phy_powerdown - powerdown phy | |
1053 | * @dev: net device | |
1054 | * | |
1055 | * Power down the specified PHY | |
1056 | */ | |
1057 | static void smc_phy_powerdown(struct net_device *dev) | |
1058 | { | |
1059 | struct smc_local *lp = netdev_priv(dev); | |
1060 | unsigned int bmcr; | |
1061 | int phy = lp->mii.phy_id; | |
1062 | ||
1063 | if (lp->phy_type == 0) | |
1064 | return; | |
1065 | ||
1066 | /* We need to ensure that no calls to smc_phy_configure are | |
1067 | pending. | |
1068 | ||
1069 | flush_scheduled_work() cannot be called because we are | |
1070 | running with the netlink semaphore held (from | |
1071 | devinet_ioctl()) and the pending work queue contains | |
1072 | linkwatch_event() (scheduled by netif_carrier_off() | |
1073 | above). linkwatch_event() also wants the netlink semaphore. | |
1074 | */ | |
1075 | while(lp->work_pending) | |
be83668a | 1076 | yield(); |
1da177e4 LT |
1077 | |
1078 | bmcr = smc_phy_read(dev, phy, MII_BMCR); | |
1079 | smc_phy_write(dev, phy, MII_BMCR, bmcr | BMCR_PDOWN); | |
1080 | } | |
1081 | ||
1082 | /* | |
1083 | * smc_phy_check_media - check the media status and adjust TCR | |
1084 | * @dev: net device | |
1085 | * @init: set true for initialisation | |
1086 | * | |
1087 | * Select duplex mode depending on negotiation state. This | |
1088 | * also updates our carrier state. | |
1089 | */ | |
1090 | static void smc_phy_check_media(struct net_device *dev, int init) | |
1091 | { | |
1092 | struct smc_local *lp = netdev_priv(dev); | |
1093 | void __iomem *ioaddr = lp->base; | |
1094 | ||
1095 | if (mii_check_media(&lp->mii, netif_msg_link(lp), init)) { | |
1096 | /* duplex state has changed */ | |
1097 | if (lp->mii.full_duplex) { | |
1098 | lp->tcr_cur_mode |= TCR_SWFDUP; | |
1099 | } else { | |
1100 | lp->tcr_cur_mode &= ~TCR_SWFDUP; | |
1101 | } | |
1102 | ||
1103 | SMC_SELECT_BANK(0); | |
1104 | SMC_SET_TCR(lp->tcr_cur_mode); | |
1105 | } | |
1106 | } | |
1107 | ||
1108 | /* | |
1109 | * Configures the specified PHY through the MII management interface | |
1110 | * using Autonegotiation. | |
1111 | * Calls smc_phy_fixed() if the user has requested a certain config. | |
1112 | * If RPC ANEG bit is set, the media selection is dependent purely on | |
1113 | * the selection by the MII (either in the MII BMCR reg or the result | |
1114 | * of autonegotiation.) If the RPC ANEG bit is cleared, the selection | |
1115 | * is controlled by the RPC SPEED and RPC DPLX bits. | |
1116 | */ | |
1117 | static void smc_phy_configure(void *data) | |
1118 | { | |
1119 | struct net_device *dev = data; | |
1120 | struct smc_local *lp = netdev_priv(dev); | |
1121 | void __iomem *ioaddr = lp->base; | |
1122 | int phyaddr = lp->mii.phy_id; | |
1123 | int my_phy_caps; /* My PHY capabilities */ | |
1124 | int my_ad_caps; /* My Advertised capabilities */ | |
1125 | int status; | |
1126 | ||
1127 | DBG(3, "%s:smc_program_phy()\n", dev->name); | |
1128 | ||
1129 | spin_lock_irq(&lp->lock); | |
1130 | ||
1131 | /* | |
1132 | * We should not be called if phy_type is zero. | |
1133 | */ | |
1134 | if (lp->phy_type == 0) | |
1135 | goto smc_phy_configure_exit; | |
1136 | ||
1137 | if (smc_phy_reset(dev, phyaddr)) { | |
1138 | printk("%s: PHY reset timed out\n", dev->name); | |
1139 | goto smc_phy_configure_exit; | |
1140 | } | |
1141 | ||
1142 | /* | |
1143 | * Enable PHY Interrupts (for register 18) | |
1144 | * Interrupts listed here are disabled | |
1145 | */ | |
1146 | smc_phy_write(dev, phyaddr, PHY_MASK_REG, | |
1147 | PHY_INT_LOSSSYNC | PHY_INT_CWRD | PHY_INT_SSD | | |
1148 | PHY_INT_ESD | PHY_INT_RPOL | PHY_INT_JAB | | |
1149 | PHY_INT_SPDDET | PHY_INT_DPLXDET); | |
1150 | ||
1151 | /* Configure the Receive/Phy Control register */ | |
1152 | SMC_SELECT_BANK(0); | |
1153 | SMC_SET_RPC(lp->rpc_cur_mode); | |
1154 | ||
1155 | /* If the user requested no auto neg, then go set his request */ | |
1156 | if (lp->mii.force_media) { | |
1157 | smc_phy_fixed(dev); | |
1158 | goto smc_phy_configure_exit; | |
1159 | } | |
1160 | ||
1161 | /* Copy our capabilities from MII_BMSR to MII_ADVERTISE */ | |
1162 | my_phy_caps = smc_phy_read(dev, phyaddr, MII_BMSR); | |
1163 | ||
1164 | if (!(my_phy_caps & BMSR_ANEGCAPABLE)) { | |
1165 | printk(KERN_INFO "Auto negotiation NOT supported\n"); | |
1166 | smc_phy_fixed(dev); | |
1167 | goto smc_phy_configure_exit; | |
1168 | } | |
1169 | ||
1170 | my_ad_caps = ADVERTISE_CSMA; /* I am CSMA capable */ | |
1171 | ||
1172 | if (my_phy_caps & BMSR_100BASE4) | |
1173 | my_ad_caps |= ADVERTISE_100BASE4; | |
1174 | if (my_phy_caps & BMSR_100FULL) | |
1175 | my_ad_caps |= ADVERTISE_100FULL; | |
1176 | if (my_phy_caps & BMSR_100HALF) | |
1177 | my_ad_caps |= ADVERTISE_100HALF; | |
1178 | if (my_phy_caps & BMSR_10FULL) | |
1179 | my_ad_caps |= ADVERTISE_10FULL; | |
1180 | if (my_phy_caps & BMSR_10HALF) | |
1181 | my_ad_caps |= ADVERTISE_10HALF; | |
1182 | ||
1183 | /* Disable capabilities not selected by our user */ | |
1184 | if (lp->ctl_rspeed != 100) | |
1185 | my_ad_caps &= ~(ADVERTISE_100BASE4|ADVERTISE_100FULL|ADVERTISE_100HALF); | |
1186 | ||
1187 | if (!lp->ctl_rfduplx) | |
1188 | my_ad_caps &= ~(ADVERTISE_100FULL|ADVERTISE_10FULL); | |
1189 | ||
1190 | /* Update our Auto-Neg Advertisement Register */ | |
1191 | smc_phy_write(dev, phyaddr, MII_ADVERTISE, my_ad_caps); | |
1192 | lp->mii.advertising = my_ad_caps; | |
1193 | ||
1194 | /* | |
1195 | * Read the register back. Without this, it appears that when | |
1196 | * auto-negotiation is restarted, sometimes it isn't ready and | |
1197 | * the link does not come up. | |
1198 | */ | |
1199 | status = smc_phy_read(dev, phyaddr, MII_ADVERTISE); | |
1200 | ||
1201 | DBG(2, "%s: phy caps=%x\n", dev->name, my_phy_caps); | |
1202 | DBG(2, "%s: phy advertised caps=%x\n", dev->name, my_ad_caps); | |
1203 | ||
1204 | /* Restart auto-negotiation process in order to advertise my caps */ | |
1205 | smc_phy_write(dev, phyaddr, MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART); | |
1206 | ||
1207 | smc_phy_check_media(dev, 1); | |
1208 | ||
1209 | smc_phy_configure_exit: | |
e5254244 | 1210 | SMC_SELECT_BANK(2); |
1da177e4 LT |
1211 | spin_unlock_irq(&lp->lock); |
1212 | lp->work_pending = 0; | |
1213 | } | |
1214 | ||
1215 | /* | |
1216 | * smc_phy_interrupt | |
1217 | * | |
1218 | * Purpose: Handle interrupts relating to PHY register 18. This is | |
1219 | * called from the "hard" interrupt handler under our private spinlock. | |
1220 | */ | |
1221 | static void smc_phy_interrupt(struct net_device *dev) | |
1222 | { | |
1223 | struct smc_local *lp = netdev_priv(dev); | |
1224 | int phyaddr = lp->mii.phy_id; | |
1225 | int phy18; | |
1226 | ||
1227 | DBG(2, "%s: %s\n", dev->name, __FUNCTION__); | |
1228 | ||
1229 | if (lp->phy_type == 0) | |
1230 | return; | |
1231 | ||
1232 | for(;;) { | |
1233 | smc_phy_check_media(dev, 0); | |
1234 | ||
1235 | /* Read PHY Register 18, Status Output */ | |
1236 | phy18 = smc_phy_read(dev, phyaddr, PHY_INT_REG); | |
1237 | if ((phy18 & PHY_INT_INT) == 0) | |
1238 | break; | |
1239 | } | |
1240 | } | |
1241 | ||
1242 | /*--- END PHY CONTROL AND CONFIGURATION-------------------------------------*/ | |
1243 | ||
1244 | static void smc_10bt_check_media(struct net_device *dev, int init) | |
1245 | { | |
1246 | struct smc_local *lp = netdev_priv(dev); | |
1247 | void __iomem *ioaddr = lp->base; | |
1248 | unsigned int old_carrier, new_carrier; | |
1249 | ||
1250 | old_carrier = netif_carrier_ok(dev) ? 1 : 0; | |
1251 | ||
1252 | SMC_SELECT_BANK(0); | |
8de90115 | 1253 | new_carrier = (SMC_GET_EPH_STATUS() & ES_LINK_OK) ? 1 : 0; |
1da177e4 LT |
1254 | SMC_SELECT_BANK(2); |
1255 | ||
1256 | if (init || (old_carrier != new_carrier)) { | |
1257 | if (!new_carrier) { | |
1258 | netif_carrier_off(dev); | |
1259 | } else { | |
1260 | netif_carrier_on(dev); | |
1261 | } | |
1262 | if (netif_msg_link(lp)) | |
1263 | printk(KERN_INFO "%s: link %s\n", dev->name, | |
1264 | new_carrier ? "up" : "down"); | |
1265 | } | |
1266 | } | |
1267 | ||
1268 | static void smc_eph_interrupt(struct net_device *dev) | |
1269 | { | |
1270 | struct smc_local *lp = netdev_priv(dev); | |
1271 | void __iomem *ioaddr = lp->base; | |
1272 | unsigned int ctl; | |
1273 | ||
1274 | smc_10bt_check_media(dev, 0); | |
1275 | ||
1276 | SMC_SELECT_BANK(1); | |
1277 | ctl = SMC_GET_CTL(); | |
1278 | SMC_SET_CTL(ctl & ~CTL_LE_ENABLE); | |
1279 | SMC_SET_CTL(ctl); | |
1280 | SMC_SELECT_BANK(2); | |
1281 | } | |
1282 | ||
1283 | /* | |
1284 | * This is the main routine of the driver, to handle the device when | |
1285 | * it needs some attention. | |
1286 | */ | |
7d12e780 | 1287 | static irqreturn_t smc_interrupt(int irq, void *dev_id) |
1da177e4 LT |
1288 | { |
1289 | struct net_device *dev = dev_id; | |
1290 | struct smc_local *lp = netdev_priv(dev); | |
1291 | void __iomem *ioaddr = lp->base; | |
1292 | int status, mask, timeout, card_stats; | |
1293 | int saved_pointer; | |
1294 | ||
1295 | DBG(3, "%s: %s\n", dev->name, __FUNCTION__); | |
1296 | ||
1297 | spin_lock(&lp->lock); | |
1298 | ||
1299 | /* A preamble may be used when there is a potential race | |
1300 | * between the interruptible transmit functions and this | |
1301 | * ISR. */ | |
1302 | SMC_INTERRUPT_PREAMBLE; | |
1303 | ||
1304 | saved_pointer = SMC_GET_PTR(); | |
1305 | mask = SMC_GET_INT_MASK(); | |
1306 | SMC_SET_INT_MASK(0); | |
1307 | ||
1308 | /* set a timeout value, so I don't stay here forever */ | |
5d0571d9 | 1309 | timeout = MAX_IRQ_LOOPS; |
1da177e4 LT |
1310 | |
1311 | do { | |
1312 | status = SMC_GET_INT(); | |
1313 | ||
1314 | DBG(2, "%s: INT 0x%02x MASK 0x%02x MEM 0x%04x FIFO 0x%04x\n", | |
1315 | dev->name, status, mask, | |
1316 | ({ int meminfo; SMC_SELECT_BANK(0); | |
1317 | meminfo = SMC_GET_MIR(); | |
1318 | SMC_SELECT_BANK(2); meminfo; }), | |
1319 | SMC_GET_FIFO()); | |
1320 | ||
1321 | status &= mask; | |
1322 | if (!status) | |
1323 | break; | |
1324 | ||
ea937560 NP |
1325 | if (status & IM_TX_INT) { |
1326 | /* do this before RX as it will free memory quickly */ | |
1da177e4 LT |
1327 | DBG(3, "%s: TX int\n", dev->name); |
1328 | smc_tx(dev); | |
1329 | SMC_ACK_INT(IM_TX_INT); | |
1330 | if (THROTTLE_TX_PKTS) | |
1331 | netif_wake_queue(dev); | |
ea937560 NP |
1332 | } else if (status & IM_RCV_INT) { |
1333 | DBG(3, "%s: RX irq\n", dev->name); | |
1334 | smc_rcv(dev); | |
1da177e4 LT |
1335 | } else if (status & IM_ALLOC_INT) { |
1336 | DBG(3, "%s: Allocation irq\n", dev->name); | |
1337 | tasklet_hi_schedule(&lp->tx_task); | |
1338 | mask &= ~IM_ALLOC_INT; | |
1339 | } else if (status & IM_TX_EMPTY_INT) { | |
1340 | DBG(3, "%s: TX empty\n", dev->name); | |
1341 | mask &= ~IM_TX_EMPTY_INT; | |
1342 | ||
1343 | /* update stats */ | |
1344 | SMC_SELECT_BANK(0); | |
1345 | card_stats = SMC_GET_COUNTER(); | |
1346 | SMC_SELECT_BANK(2); | |
1347 | ||
1348 | /* single collisions */ | |
1349 | lp->stats.collisions += card_stats & 0xF; | |
1350 | card_stats >>= 4; | |
1351 | ||
1352 | /* multiple collisions */ | |
1353 | lp->stats.collisions += card_stats & 0xF; | |
1354 | } else if (status & IM_RX_OVRN_INT) { | |
8de90115 NP |
1355 | DBG(1, "%s: RX overrun (EPH_ST 0x%04x)\n", dev->name, |
1356 | ({ int eph_st; SMC_SELECT_BANK(0); | |
1357 | eph_st = SMC_GET_EPH_STATUS(); | |
1358 | SMC_SELECT_BANK(2); eph_st; }) ); | |
1da177e4 LT |
1359 | SMC_ACK_INT(IM_RX_OVRN_INT); |
1360 | lp->stats.rx_errors++; | |
1361 | lp->stats.rx_fifo_errors++; | |
1362 | } else if (status & IM_EPH_INT) { | |
1363 | smc_eph_interrupt(dev); | |
1364 | } else if (status & IM_MDINT) { | |
1365 | SMC_ACK_INT(IM_MDINT); | |
1366 | smc_phy_interrupt(dev); | |
1367 | } else if (status & IM_ERCV_INT) { | |
1368 | SMC_ACK_INT(IM_ERCV_INT); | |
1369 | PRINTK("%s: UNSUPPORTED: ERCV INTERRUPT \n", dev->name); | |
1370 | } | |
1371 | } while (--timeout); | |
1372 | ||
1373 | /* restore register states */ | |
1374 | SMC_SET_PTR(saved_pointer); | |
1375 | SMC_SET_INT_MASK(mask); | |
1da177e4 LT |
1376 | spin_unlock(&lp->lock); |
1377 | ||
5d0571d9 NP |
1378 | if (timeout == MAX_IRQ_LOOPS) |
1379 | PRINTK("%s: spurious interrupt (mask = 0x%02x)\n", | |
1380 | dev->name, mask); | |
1381 | DBG(3, "%s: Interrupt done (%d loops)\n", | |
1382 | dev->name, MAX_IRQ_LOOPS - timeout); | |
1da177e4 LT |
1383 | |
1384 | /* | |
1385 | * We return IRQ_HANDLED unconditionally here even if there was | |
1386 | * nothing to do. There is a possibility that a packet might | |
1387 | * get enqueued into the chip right after TX_EMPTY_INT is raised | |
1388 | * but just before the CPU acknowledges the IRQ. | |
1389 | * Better take an unneeded IRQ in some occasions than complexifying | |
1390 | * the code for all cases. | |
1391 | */ | |
1392 | return IRQ_HANDLED; | |
1393 | } | |
1394 | ||
1395 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1396 | /* | |
1397 | * Polling receive - used by netconsole and other diagnostic tools | |
1398 | * to allow network i/o with interrupts disabled. | |
1399 | */ | |
1400 | static void smc_poll_controller(struct net_device *dev) | |
1401 | { | |
1402 | disable_irq(dev->irq); | |
9c8e7f5c | 1403 | smc_interrupt(dev->irq, dev); |
1da177e4 LT |
1404 | enable_irq(dev->irq); |
1405 | } | |
1406 | #endif | |
1407 | ||
1408 | /* Our watchdog timed out. Called by the networking layer */ | |
1409 | static void smc_timeout(struct net_device *dev) | |
1410 | { | |
1411 | struct smc_local *lp = netdev_priv(dev); | |
1412 | void __iomem *ioaddr = lp->base; | |
8de90115 | 1413 | int status, mask, eph_st, meminfo, fifo; |
1da177e4 LT |
1414 | |
1415 | DBG(2, "%s: %s\n", dev->name, __FUNCTION__); | |
1416 | ||
1417 | spin_lock_irq(&lp->lock); | |
1418 | status = SMC_GET_INT(); | |
1419 | mask = SMC_GET_INT_MASK(); | |
1420 | fifo = SMC_GET_FIFO(); | |
1421 | SMC_SELECT_BANK(0); | |
8de90115 | 1422 | eph_st = SMC_GET_EPH_STATUS(); |
1da177e4 LT |
1423 | meminfo = SMC_GET_MIR(); |
1424 | SMC_SELECT_BANK(2); | |
1425 | spin_unlock_irq(&lp->lock); | |
8de90115 NP |
1426 | PRINTK( "%s: TX timeout (INT 0x%02x INTMASK 0x%02x " |
1427 | "MEM 0x%04x FIFO 0x%04x EPH_ST 0x%04x)\n", | |
1428 | dev->name, status, mask, meminfo, fifo, eph_st ); | |
1da177e4 LT |
1429 | |
1430 | smc_reset(dev); | |
1431 | smc_enable(dev); | |
1432 | ||
1433 | /* | |
1434 | * Reconfiguring the PHY doesn't seem like a bad idea here, but | |
1435 | * smc_phy_configure() calls msleep() which calls schedule_timeout() | |
1436 | * which calls schedule(). Hence we use a work queue. | |
1437 | */ | |
1438 | if (lp->phy_type != 0) { | |
1439 | if (schedule_work(&lp->phy_configure)) { | |
1440 | lp->work_pending = 1; | |
1441 | } | |
1442 | } | |
1443 | ||
1444 | /* We can accept TX packets again */ | |
1445 | dev->trans_start = jiffies; | |
1446 | netif_wake_queue(dev); | |
1447 | } | |
1448 | ||
1449 | /* | |
1450 | * This routine will, depending on the values passed to it, | |
1451 | * either make it accept multicast packets, go into | |
1452 | * promiscuous mode (for TCPDUMP and cousins) or accept | |
1453 | * a select set of multicast packets | |
1454 | */ | |
1455 | static void smc_set_multicast_list(struct net_device *dev) | |
1456 | { | |
1457 | struct smc_local *lp = netdev_priv(dev); | |
1458 | void __iomem *ioaddr = lp->base; | |
1459 | unsigned char multicast_table[8]; | |
1460 | int update_multicast = 0; | |
1461 | ||
1462 | DBG(2, "%s: %s\n", dev->name, __FUNCTION__); | |
1463 | ||
1464 | if (dev->flags & IFF_PROMISC) { | |
1465 | DBG(2, "%s: RCR_PRMS\n", dev->name); | |
1466 | lp->rcr_cur_mode |= RCR_PRMS; | |
1467 | } | |
1468 | ||
1469 | /* BUG? I never disable promiscuous mode if multicasting was turned on. | |
1470 | Now, I turn off promiscuous mode, but I don't do anything to multicasting | |
1471 | when promiscuous mode is turned on. | |
1472 | */ | |
1473 | ||
1474 | /* | |
1475 | * Here, I am setting this to accept all multicast packets. | |
1476 | * I don't need to zero the multicast table, because the flag is | |
1477 | * checked before the table is | |
1478 | */ | |
1479 | else if (dev->flags & IFF_ALLMULTI || dev->mc_count > 16) { | |
1480 | DBG(2, "%s: RCR_ALMUL\n", dev->name); | |
1481 | lp->rcr_cur_mode |= RCR_ALMUL; | |
1482 | } | |
1483 | ||
1484 | /* | |
1485 | * This sets the internal hardware table to filter out unwanted | |
1486 | * multicast packets before they take up memory. | |
1487 | * | |
1488 | * The SMC chip uses a hash table where the high 6 bits of the CRC of | |
1489 | * address are the offset into the table. If that bit is 1, then the | |
1490 | * multicast packet is accepted. Otherwise, it's dropped silently. | |
1491 | * | |
1492 | * To use the 6 bits as an offset into the table, the high 3 bits are | |
1493 | * the number of the 8 bit register, while the low 3 bits are the bit | |
1494 | * within that register. | |
1495 | */ | |
1496 | else if (dev->mc_count) { | |
1497 | int i; | |
1498 | struct dev_mc_list *cur_addr; | |
1499 | ||
1500 | /* table for flipping the order of 3 bits */ | |
1501 | static const unsigned char invert3[] = {0, 4, 2, 6, 1, 5, 3, 7}; | |
1502 | ||
1503 | /* start with a table of all zeros: reject all */ | |
1504 | memset(multicast_table, 0, sizeof(multicast_table)); | |
1505 | ||
1506 | cur_addr = dev->mc_list; | |
1507 | for (i = 0; i < dev->mc_count; i++, cur_addr = cur_addr->next) { | |
1508 | int position; | |
1509 | ||
1510 | /* do we have a pointer here? */ | |
1511 | if (!cur_addr) | |
1512 | break; | |
1513 | /* make sure this is a multicast address - | |
1514 | shouldn't this be a given if we have it here ? */ | |
1515 | if (!(*cur_addr->dmi_addr & 1)) | |
1516 | continue; | |
1517 | ||
1518 | /* only use the low order bits */ | |
1519 | position = crc32_le(~0, cur_addr->dmi_addr, 6) & 0x3f; | |
1520 | ||
1521 | /* do some messy swapping to put the bit in the right spot */ | |
1522 | multicast_table[invert3[position&7]] |= | |
1523 | (1<<invert3[(position>>3)&7]); | |
1524 | } | |
1525 | ||
1526 | /* be sure I get rid of flags I might have set */ | |
1527 | lp->rcr_cur_mode &= ~(RCR_PRMS | RCR_ALMUL); | |
1528 | ||
1529 | /* now, the table can be loaded into the chipset */ | |
1530 | update_multicast = 1; | |
1531 | } else { | |
1532 | DBG(2, "%s: ~(RCR_PRMS|RCR_ALMUL)\n", dev->name); | |
1533 | lp->rcr_cur_mode &= ~(RCR_PRMS | RCR_ALMUL); | |
1534 | ||
1535 | /* | |
1536 | * since I'm disabling all multicast entirely, I need to | |
1537 | * clear the multicast list | |
1538 | */ | |
1539 | memset(multicast_table, 0, sizeof(multicast_table)); | |
1540 | update_multicast = 1; | |
1541 | } | |
1542 | ||
1543 | spin_lock_irq(&lp->lock); | |
1544 | SMC_SELECT_BANK(0); | |
1545 | SMC_SET_RCR(lp->rcr_cur_mode); | |
1546 | if (update_multicast) { | |
1547 | SMC_SELECT_BANK(3); | |
1548 | SMC_SET_MCAST(multicast_table); | |
1549 | } | |
1550 | SMC_SELECT_BANK(2); | |
1551 | spin_unlock_irq(&lp->lock); | |
1552 | } | |
1553 | ||
1554 | ||
1555 | /* | |
1556 | * Open and Initialize the board | |
1557 | * | |
1558 | * Set up everything, reset the card, etc.. | |
1559 | */ | |
1560 | static int | |
1561 | smc_open(struct net_device *dev) | |
1562 | { | |
1563 | struct smc_local *lp = netdev_priv(dev); | |
1564 | ||
1565 | DBG(2, "%s: %s\n", dev->name, __FUNCTION__); | |
1566 | ||
1567 | /* | |
1568 | * Check that the address is valid. If its not, refuse | |
1569 | * to bring the device up. The user must specify an | |
1570 | * address using ifconfig eth0 hw ether xx:xx:xx:xx:xx:xx | |
1571 | */ | |
1572 | if (!is_valid_ether_addr(dev->dev_addr)) { | |
1573 | PRINTK("%s: no valid ethernet hw addr\n", __FUNCTION__); | |
1574 | return -EINVAL; | |
1575 | } | |
1576 | ||
1577 | /* Setup the default Register Modes */ | |
1578 | lp->tcr_cur_mode = TCR_DEFAULT; | |
1579 | lp->rcr_cur_mode = RCR_DEFAULT; | |
1580 | lp->rpc_cur_mode = RPC_DEFAULT; | |
1581 | ||
1582 | /* | |
1583 | * If we are not using a MII interface, we need to | |
1584 | * monitor our own carrier signal to detect faults. | |
1585 | */ | |
1586 | if (lp->phy_type == 0) | |
1587 | lp->tcr_cur_mode |= TCR_MON_CSN; | |
1588 | ||
1589 | /* reset the hardware */ | |
1590 | smc_reset(dev); | |
1591 | smc_enable(dev); | |
1592 | ||
1593 | /* Configure the PHY, initialize the link state */ | |
1594 | if (lp->phy_type != 0) | |
1595 | smc_phy_configure(dev); | |
1596 | else { | |
1597 | spin_lock_irq(&lp->lock); | |
1598 | smc_10bt_check_media(dev, 1); | |
1599 | spin_unlock_irq(&lp->lock); | |
1600 | } | |
1601 | ||
1602 | netif_start_queue(dev); | |
1603 | return 0; | |
1604 | } | |
1605 | ||
1606 | /* | |
1607 | * smc_close | |
1608 | * | |
1609 | * this makes the board clean up everything that it can | |
1610 | * and not talk to the outside world. Caused by | |
1611 | * an 'ifconfig ethX down' | |
1612 | */ | |
1613 | static int smc_close(struct net_device *dev) | |
1614 | { | |
1615 | struct smc_local *lp = netdev_priv(dev); | |
1616 | ||
1617 | DBG(2, "%s: %s\n", dev->name, __FUNCTION__); | |
1618 | ||
1619 | netif_stop_queue(dev); | |
1620 | netif_carrier_off(dev); | |
1621 | ||
1622 | /* clear everything */ | |
1623 | smc_shutdown(dev); | |
be83668a | 1624 | tasklet_kill(&lp->tx_task); |
1da177e4 | 1625 | smc_phy_powerdown(dev); |
1da177e4 LT |
1626 | return 0; |
1627 | } | |
1628 | ||
1629 | /* | |
1630 | * Get the current statistics. | |
1631 | * This may be called with the card open or closed. | |
1632 | */ | |
1633 | static struct net_device_stats *smc_query_statistics(struct net_device *dev) | |
1634 | { | |
1635 | struct smc_local *lp = netdev_priv(dev); | |
1636 | ||
1637 | DBG(2, "%s: %s\n", dev->name, __FUNCTION__); | |
1638 | ||
1639 | return &lp->stats; | |
1640 | } | |
1641 | ||
1642 | /* | |
1643 | * Ethtool support | |
1644 | */ | |
1645 | static int | |
1646 | smc_ethtool_getsettings(struct net_device *dev, struct ethtool_cmd *cmd) | |
1647 | { | |
1648 | struct smc_local *lp = netdev_priv(dev); | |
1649 | int ret; | |
1650 | ||
1651 | cmd->maxtxpkt = 1; | |
1652 | cmd->maxrxpkt = 1; | |
1653 | ||
1654 | if (lp->phy_type != 0) { | |
1655 | spin_lock_irq(&lp->lock); | |
1656 | ret = mii_ethtool_gset(&lp->mii, cmd); | |
1657 | spin_unlock_irq(&lp->lock); | |
1658 | } else { | |
1659 | cmd->supported = SUPPORTED_10baseT_Half | | |
1660 | SUPPORTED_10baseT_Full | | |
1661 | SUPPORTED_TP | SUPPORTED_AUI; | |
1662 | ||
1663 | if (lp->ctl_rspeed == 10) | |
1664 | cmd->speed = SPEED_10; | |
1665 | else if (lp->ctl_rspeed == 100) | |
1666 | cmd->speed = SPEED_100; | |
1667 | ||
1668 | cmd->autoneg = AUTONEG_DISABLE; | |
1669 | cmd->transceiver = XCVR_INTERNAL; | |
1670 | cmd->port = 0; | |
1671 | cmd->duplex = lp->tcr_cur_mode & TCR_SWFDUP ? DUPLEX_FULL : DUPLEX_HALF; | |
1672 | ||
1673 | ret = 0; | |
1674 | } | |
1675 | ||
1676 | return ret; | |
1677 | } | |
1678 | ||
1679 | static int | |
1680 | smc_ethtool_setsettings(struct net_device *dev, struct ethtool_cmd *cmd) | |
1681 | { | |
1682 | struct smc_local *lp = netdev_priv(dev); | |
1683 | int ret; | |
1684 | ||
1685 | if (lp->phy_type != 0) { | |
1686 | spin_lock_irq(&lp->lock); | |
1687 | ret = mii_ethtool_sset(&lp->mii, cmd); | |
1688 | spin_unlock_irq(&lp->lock); | |
1689 | } else { | |
1690 | if (cmd->autoneg != AUTONEG_DISABLE || | |
1691 | cmd->speed != SPEED_10 || | |
1692 | (cmd->duplex != DUPLEX_HALF && cmd->duplex != DUPLEX_FULL) || | |
1693 | (cmd->port != PORT_TP && cmd->port != PORT_AUI)) | |
1694 | return -EINVAL; | |
1695 | ||
1696 | // lp->port = cmd->port; | |
1697 | lp->ctl_rfduplx = cmd->duplex == DUPLEX_FULL; | |
1698 | ||
1699 | // if (netif_running(dev)) | |
1700 | // smc_set_port(dev); | |
1701 | ||
1702 | ret = 0; | |
1703 | } | |
1704 | ||
1705 | return ret; | |
1706 | } | |
1707 | ||
1708 | static void | |
1709 | smc_ethtool_getdrvinfo(struct net_device *dev, struct ethtool_drvinfo *info) | |
1710 | { | |
1711 | strncpy(info->driver, CARDNAME, sizeof(info->driver)); | |
1712 | strncpy(info->version, version, sizeof(info->version)); | |
1713 | strncpy(info->bus_info, dev->class_dev.dev->bus_id, sizeof(info->bus_info)); | |
1714 | } | |
1715 | ||
1716 | static int smc_ethtool_nwayreset(struct net_device *dev) | |
1717 | { | |
1718 | struct smc_local *lp = netdev_priv(dev); | |
1719 | int ret = -EINVAL; | |
1720 | ||
1721 | if (lp->phy_type != 0) { | |
1722 | spin_lock_irq(&lp->lock); | |
1723 | ret = mii_nway_restart(&lp->mii); | |
1724 | spin_unlock_irq(&lp->lock); | |
1725 | } | |
1726 | ||
1727 | return ret; | |
1728 | } | |
1729 | ||
1730 | static u32 smc_ethtool_getmsglevel(struct net_device *dev) | |
1731 | { | |
1732 | struct smc_local *lp = netdev_priv(dev); | |
1733 | return lp->msg_enable; | |
1734 | } | |
1735 | ||
1736 | static void smc_ethtool_setmsglevel(struct net_device *dev, u32 level) | |
1737 | { | |
1738 | struct smc_local *lp = netdev_priv(dev); | |
1739 | lp->msg_enable = level; | |
1740 | } | |
1741 | ||
7282d491 | 1742 | static const struct ethtool_ops smc_ethtool_ops = { |
1da177e4 LT |
1743 | .get_settings = smc_ethtool_getsettings, |
1744 | .set_settings = smc_ethtool_setsettings, | |
1745 | .get_drvinfo = smc_ethtool_getdrvinfo, | |
1746 | ||
1747 | .get_msglevel = smc_ethtool_getmsglevel, | |
1748 | .set_msglevel = smc_ethtool_setmsglevel, | |
1749 | .nway_reset = smc_ethtool_nwayreset, | |
1750 | .get_link = ethtool_op_get_link, | |
1751 | // .get_eeprom = smc_ethtool_geteeprom, | |
1752 | // .set_eeprom = smc_ethtool_seteeprom, | |
1753 | }; | |
1754 | ||
1755 | /* | |
1756 | * smc_findirq | |
1757 | * | |
1758 | * This routine has a simple purpose -- make the SMC chip generate an | |
1759 | * interrupt, so an auto-detect routine can detect it, and find the IRQ, | |
1760 | */ | |
1761 | /* | |
1762 | * does this still work? | |
1763 | * | |
1764 | * I just deleted auto_irq.c, since it was never built... | |
1765 | * --jgarzik | |
1766 | */ | |
1767 | static int __init smc_findirq(void __iomem *ioaddr) | |
1768 | { | |
1769 | int timeout = 20; | |
1770 | unsigned long cookie; | |
1771 | ||
1772 | DBG(2, "%s: %s\n", CARDNAME, __FUNCTION__); | |
1773 | ||
1774 | cookie = probe_irq_on(); | |
1775 | ||
1776 | /* | |
1777 | * What I try to do here is trigger an ALLOC_INT. This is done | |
1778 | * by allocating a small chunk of memory, which will give an interrupt | |
1779 | * when done. | |
1780 | */ | |
1781 | /* enable ALLOCation interrupts ONLY */ | |
1782 | SMC_SELECT_BANK(2); | |
1783 | SMC_SET_INT_MASK(IM_ALLOC_INT); | |
1784 | ||
1785 | /* | |
1786 | * Allocate 512 bytes of memory. Note that the chip was just | |
1787 | * reset so all the memory is available | |
1788 | */ | |
1789 | SMC_SET_MMU_CMD(MC_ALLOC | 1); | |
1790 | ||
1791 | /* | |
1792 | * Wait until positive that the interrupt has been generated | |
1793 | */ | |
1794 | do { | |
1795 | int int_status; | |
1796 | udelay(10); | |
1797 | int_status = SMC_GET_INT(); | |
1798 | if (int_status & IM_ALLOC_INT) | |
1799 | break; /* got the interrupt */ | |
1800 | } while (--timeout); | |
1801 | ||
1802 | /* | |
1803 | * there is really nothing that I can do here if timeout fails, | |
1804 | * as autoirq_report will return a 0 anyway, which is what I | |
1805 | * want in this case. Plus, the clean up is needed in both | |
1806 | * cases. | |
1807 | */ | |
1808 | ||
1809 | /* and disable all interrupts again */ | |
1810 | SMC_SET_INT_MASK(0); | |
1811 | ||
1812 | /* and return what I found */ | |
1813 | return probe_irq_off(cookie); | |
1814 | } | |
1815 | ||
1816 | /* | |
1817 | * Function: smc_probe(unsigned long ioaddr) | |
1818 | * | |
1819 | * Purpose: | |
1820 | * Tests to see if a given ioaddr points to an SMC91x chip. | |
1821 | * Returns a 0 on success | |
1822 | * | |
1823 | * Algorithm: | |
1824 | * (1) see if the high byte of BANK_SELECT is 0x33 | |
1825 | * (2) compare the ioaddr with the base register's address | |
1826 | * (3) see if I recognize the chip ID in the appropriate register | |
1827 | * | |
1828 | * Here I do typical initialization tasks. | |
1829 | * | |
1830 | * o Initialize the structure if needed | |
1831 | * o print out my vanity message if not done so already | |
1832 | * o print out what type of hardware is detected | |
1833 | * o print out the ethernet address | |
1834 | * o find the IRQ | |
1835 | * o set up my private data | |
1836 | * o configure the dev structure with my subroutines | |
1837 | * o actually GRAB the irq. | |
1838 | * o GRAB the region | |
1839 | */ | |
1840 | static int __init smc_probe(struct net_device *dev, void __iomem *ioaddr) | |
1841 | { | |
1842 | struct smc_local *lp = netdev_priv(dev); | |
1843 | static int version_printed = 0; | |
1844 | int i, retval; | |
1845 | unsigned int val, revision_register; | |
1846 | const char *version_string; | |
1847 | ||
1848 | DBG(2, "%s: %s\n", CARDNAME, __FUNCTION__); | |
1849 | ||
1850 | /* First, see if the high byte is 0x33 */ | |
1851 | val = SMC_CURRENT_BANK(); | |
1852 | DBG(2, "%s: bank signature probe returned 0x%04x\n", CARDNAME, val); | |
1853 | if ((val & 0xFF00) != 0x3300) { | |
1854 | if ((val & 0xFF) == 0x33) { | |
1855 | printk(KERN_WARNING | |
1856 | "%s: Detected possible byte-swapped interface" | |
1857 | " at IOADDR %p\n", CARDNAME, ioaddr); | |
1858 | } | |
1859 | retval = -ENODEV; | |
1860 | goto err_out; | |
1861 | } | |
1862 | ||
1863 | /* | |
1864 | * The above MIGHT indicate a device, but I need to write to | |
1865 | * further test this. | |
1866 | */ | |
1867 | SMC_SELECT_BANK(0); | |
1868 | val = SMC_CURRENT_BANK(); | |
1869 | if ((val & 0xFF00) != 0x3300) { | |
1870 | retval = -ENODEV; | |
1871 | goto err_out; | |
1872 | } | |
1873 | ||
1874 | /* | |
1875 | * well, we've already written once, so hopefully another | |
1876 | * time won't hurt. This time, I need to switch the bank | |
1877 | * register to bank 1, so I can access the base address | |
1878 | * register | |
1879 | */ | |
1880 | SMC_SELECT_BANK(1); | |
1881 | val = SMC_GET_BASE(); | |
1882 | val = ((val & 0x1F00) >> 3) << SMC_IO_SHIFT; | |
53155109 | 1883 | if (((unsigned int)ioaddr & (0x3e0 << SMC_IO_SHIFT)) != val) { |
1da177e4 LT |
1884 | printk("%s: IOADDR %p doesn't match configuration (%x).\n", |
1885 | CARDNAME, ioaddr, val); | |
1886 | } | |
1887 | ||
1888 | /* | |
1889 | * check if the revision register is something that I | |
1890 | * recognize. These might need to be added to later, | |
1891 | * as future revisions could be added. | |
1892 | */ | |
1893 | SMC_SELECT_BANK(3); | |
1894 | revision_register = SMC_GET_REV(); | |
1895 | DBG(2, "%s: revision = 0x%04x\n", CARDNAME, revision_register); | |
1896 | version_string = chip_ids[ (revision_register >> 4) & 0xF]; | |
1897 | if (!version_string || (revision_register & 0xff00) != 0x3300) { | |
1898 | /* I don't recognize this chip, so... */ | |
1899 | printk("%s: IO %p: Unrecognized revision register 0x%04x" | |
1900 | ", Contact author.\n", CARDNAME, | |
1901 | ioaddr, revision_register); | |
1902 | ||
1903 | retval = -ENODEV; | |
1904 | goto err_out; | |
1905 | } | |
1906 | ||
1907 | /* At this point I'll assume that the chip is an SMC91x. */ | |
1908 | if (version_printed++ == 0) | |
1909 | printk("%s", version); | |
1910 | ||
1911 | /* fill in some of the fields */ | |
1912 | dev->base_addr = (unsigned long)ioaddr; | |
1913 | lp->base = ioaddr; | |
1914 | lp->version = revision_register & 0xff; | |
1915 | spin_lock_init(&lp->lock); | |
1916 | ||
1917 | /* Get the MAC address */ | |
1918 | SMC_SELECT_BANK(1); | |
1919 | SMC_GET_MAC_ADDR(dev->dev_addr); | |
1920 | ||
1921 | /* now, reset the chip, and put it into a known state */ | |
1922 | smc_reset(dev); | |
1923 | ||
1924 | /* | |
1925 | * If dev->irq is 0, then the device has to be banged on to see | |
1926 | * what the IRQ is. | |
1927 | * | |
1928 | * This banging doesn't always detect the IRQ, for unknown reasons. | |
1929 | * a workaround is to reset the chip and try again. | |
1930 | * | |
1931 | * Interestingly, the DOS packet driver *SETS* the IRQ on the card to | |
1932 | * be what is requested on the command line. I don't do that, mostly | |
1933 | * because the card that I have uses a non-standard method of accessing | |
1934 | * the IRQs, and because this _should_ work in most configurations. | |
1935 | * | |
1936 | * Specifying an IRQ is done with the assumption that the user knows | |
1937 | * what (s)he is doing. No checking is done!!!! | |
1938 | */ | |
1939 | if (dev->irq < 1) { | |
1940 | int trials; | |
1941 | ||
1942 | trials = 3; | |
1943 | while (trials--) { | |
1944 | dev->irq = smc_findirq(ioaddr); | |
1945 | if (dev->irq) | |
1946 | break; | |
1947 | /* kick the card and try again */ | |
1948 | smc_reset(dev); | |
1949 | } | |
1950 | } | |
1951 | if (dev->irq == 0) { | |
1952 | printk("%s: Couldn't autodetect your IRQ. Use irq=xx.\n", | |
1953 | dev->name); | |
1954 | retval = -ENODEV; | |
1955 | goto err_out; | |
1956 | } | |
1957 | dev->irq = irq_canonicalize(dev->irq); | |
1958 | ||
1959 | /* Fill in the fields of the device structure with ethernet values. */ | |
1960 | ether_setup(dev); | |
1961 | ||
1962 | dev->open = smc_open; | |
1963 | dev->stop = smc_close; | |
1964 | dev->hard_start_xmit = smc_hard_start_xmit; | |
1965 | dev->tx_timeout = smc_timeout; | |
1966 | dev->watchdog_timeo = msecs_to_jiffies(watchdog); | |
1967 | dev->get_stats = smc_query_statistics; | |
1968 | dev->set_multicast_list = smc_set_multicast_list; | |
1969 | dev->ethtool_ops = &smc_ethtool_ops; | |
1970 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1971 | dev->poll_controller = smc_poll_controller; | |
1972 | #endif | |
1973 | ||
1974 | tasklet_init(&lp->tx_task, smc_hardware_send_pkt, (unsigned long)dev); | |
1975 | INIT_WORK(&lp->phy_configure, smc_phy_configure, dev); | |
1976 | lp->mii.phy_id_mask = 0x1f; | |
1977 | lp->mii.reg_num_mask = 0x1f; | |
1978 | lp->mii.force_media = 0; | |
1979 | lp->mii.full_duplex = 0; | |
1980 | lp->mii.dev = dev; | |
1981 | lp->mii.mdio_read = smc_phy_read; | |
1982 | lp->mii.mdio_write = smc_phy_write; | |
1983 | ||
1984 | /* | |
1985 | * Locate the phy, if any. | |
1986 | */ | |
1987 | if (lp->version >= (CHIP_91100 << 4)) | |
1988 | smc_phy_detect(dev); | |
1989 | ||
99e1baf8 NP |
1990 | /* then shut everything down to save power */ |
1991 | smc_shutdown(dev); | |
1992 | smc_phy_powerdown(dev); | |
1993 | ||
1da177e4 LT |
1994 | /* Set default parameters */ |
1995 | lp->msg_enable = NETIF_MSG_LINK; | |
1996 | lp->ctl_rfduplx = 0; | |
1997 | lp->ctl_rspeed = 10; | |
1998 | ||
1999 | if (lp->version >= (CHIP_91100 << 4)) { | |
2000 | lp->ctl_rfduplx = 1; | |
2001 | lp->ctl_rspeed = 100; | |
2002 | } | |
2003 | ||
2004 | /* Grab the IRQ */ | |
9ded96f2 | 2005 | retval = request_irq(dev->irq, &smc_interrupt, SMC_IRQ_FLAGS, dev->name, dev); |
1da177e4 LT |
2006 | if (retval) |
2007 | goto err_out; | |
2008 | ||
1da177e4 LT |
2009 | #ifdef SMC_USE_PXA_DMA |
2010 | { | |
2011 | int dma = pxa_request_dma(dev->name, DMA_PRIO_LOW, | |
2012 | smc_pxa_dma_irq, NULL); | |
2013 | if (dma >= 0) | |
2014 | dev->dma = dma; | |
2015 | } | |
2016 | #endif | |
2017 | ||
2018 | retval = register_netdev(dev); | |
2019 | if (retval == 0) { | |
2020 | /* now, print out the card info, in a short format.. */ | |
2021 | printk("%s: %s (rev %d) at %p IRQ %d", | |
2022 | dev->name, version_string, revision_register & 0x0f, | |
2023 | lp->base, dev->irq); | |
2024 | ||
2025 | if (dev->dma != (unsigned char)-1) | |
2026 | printk(" DMA %d", dev->dma); | |
2027 | ||
2028 | printk("%s%s\n", nowait ? " [nowait]" : "", | |
2029 | THROTTLE_TX_PKTS ? " [throttle_tx]" : ""); | |
2030 | ||
2031 | if (!is_valid_ether_addr(dev->dev_addr)) { | |
2032 | printk("%s: Invalid ethernet MAC address. Please " | |
2033 | "set using ifconfig\n", dev->name); | |
2034 | } else { | |
2035 | /* Print the Ethernet address */ | |
2036 | printk("%s: Ethernet addr: ", dev->name); | |
2037 | for (i = 0; i < 5; i++) | |
2038 | printk("%2.2x:", dev->dev_addr[i]); | |
2039 | printk("%2.2x\n", dev->dev_addr[5]); | |
2040 | } | |
2041 | ||
2042 | if (lp->phy_type == 0) { | |
2043 | PRINTK("%s: No PHY found\n", dev->name); | |
2044 | } else if ((lp->phy_type & 0xfffffff0) == 0x0016f840) { | |
2045 | PRINTK("%s: PHY LAN83C183 (LAN91C111 Internal)\n", dev->name); | |
2046 | } else if ((lp->phy_type & 0xfffffff0) == 0x02821c50) { | |
2047 | PRINTK("%s: PHY LAN83C180\n", dev->name); | |
2048 | } | |
2049 | } | |
2050 | ||
2051 | err_out: | |
2052 | #ifdef SMC_USE_PXA_DMA | |
2053 | if (retval && dev->dma != (unsigned char)-1) | |
2054 | pxa_free_dma(dev->dma); | |
2055 | #endif | |
2056 | return retval; | |
2057 | } | |
2058 | ||
2059 | static int smc_enable_device(struct platform_device *pdev) | |
2060 | { | |
2061 | unsigned long flags; | |
2062 | unsigned char ecor, ecsr; | |
2063 | void __iomem *addr; | |
2064 | struct resource * res; | |
2065 | ||
2066 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-attrib"); | |
2067 | if (!res) | |
2068 | return 0; | |
2069 | ||
2070 | /* | |
2071 | * Map the attribute space. This is overkill, but clean. | |
2072 | */ | |
2073 | addr = ioremap(res->start, ATTRIB_SIZE); | |
2074 | if (!addr) | |
2075 | return -ENOMEM; | |
2076 | ||
2077 | /* | |
2078 | * Reset the device. We must disable IRQs around this | |
2079 | * since a reset causes the IRQ line become active. | |
2080 | */ | |
2081 | local_irq_save(flags); | |
2082 | ecor = readb(addr + (ECOR << SMC_IO_SHIFT)) & ~ECOR_RESET; | |
2083 | writeb(ecor | ECOR_RESET, addr + (ECOR << SMC_IO_SHIFT)); | |
2084 | readb(addr + (ECOR << SMC_IO_SHIFT)); | |
2085 | ||
2086 | /* | |
2087 | * Wait 100us for the chip to reset. | |
2088 | */ | |
2089 | udelay(100); | |
2090 | ||
2091 | /* | |
2092 | * The device will ignore all writes to the enable bit while | |
2093 | * reset is asserted, even if the reset bit is cleared in the | |
2094 | * same write. Must clear reset first, then enable the device. | |
2095 | */ | |
2096 | writeb(ecor, addr + (ECOR << SMC_IO_SHIFT)); | |
2097 | writeb(ecor | ECOR_ENABLE, addr + (ECOR << SMC_IO_SHIFT)); | |
2098 | ||
2099 | /* | |
2100 | * Set the appropriate byte/word mode. | |
2101 | */ | |
2102 | ecsr = readb(addr + (ECSR << SMC_IO_SHIFT)) & ~ECSR_IOIS8; | |
09779c6d NP |
2103 | if (!SMC_CAN_USE_16BIT) |
2104 | ecsr |= ECSR_IOIS8; | |
1da177e4 LT |
2105 | writeb(ecsr, addr + (ECSR << SMC_IO_SHIFT)); |
2106 | local_irq_restore(flags); | |
2107 | ||
2108 | iounmap(addr); | |
2109 | ||
2110 | /* | |
2111 | * Wait for the chip to wake up. We could poll the control | |
2112 | * register in the main register space, but that isn't mapped | |
2113 | * yet. We know this is going to take 750us. | |
2114 | */ | |
2115 | msleep(1); | |
2116 | ||
2117 | return 0; | |
2118 | } | |
2119 | ||
2120 | static int smc_request_attrib(struct platform_device *pdev) | |
2121 | { | |
2122 | struct resource * res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-attrib"); | |
2123 | ||
2124 | if (!res) | |
2125 | return 0; | |
2126 | ||
2127 | if (!request_mem_region(res->start, ATTRIB_SIZE, CARDNAME)) | |
2128 | return -EBUSY; | |
2129 | ||
2130 | return 0; | |
2131 | } | |
2132 | ||
2133 | static void smc_release_attrib(struct platform_device *pdev) | |
2134 | { | |
2135 | struct resource * res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-attrib"); | |
2136 | ||
2137 | if (res) | |
2138 | release_mem_region(res->start, ATTRIB_SIZE); | |
2139 | } | |
2140 | ||
09779c6d | 2141 | static inline void smc_request_datacs(struct platform_device *pdev, struct net_device *ndev) |
1da177e4 | 2142 | { |
09779c6d NP |
2143 | if (SMC_CAN_USE_DATACS) { |
2144 | struct resource * res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-data32"); | |
2145 | struct smc_local *lp = netdev_priv(ndev); | |
1da177e4 | 2146 | |
09779c6d NP |
2147 | if (!res) |
2148 | return; | |
1da177e4 | 2149 | |
09779c6d NP |
2150 | if(!request_mem_region(res->start, SMC_DATA_EXTENT, CARDNAME)) { |
2151 | printk(KERN_INFO "%s: failed to request datacs memory region.\n", CARDNAME); | |
2152 | return; | |
2153 | } | |
1da177e4 | 2154 | |
09779c6d NP |
2155 | lp->datacs = ioremap(res->start, SMC_DATA_EXTENT); |
2156 | } | |
1da177e4 LT |
2157 | } |
2158 | ||
2159 | static void smc_release_datacs(struct platform_device *pdev, struct net_device *ndev) | |
2160 | { | |
09779c6d NP |
2161 | if (SMC_CAN_USE_DATACS) { |
2162 | struct smc_local *lp = netdev_priv(ndev); | |
2163 | struct resource * res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-data32"); | |
1da177e4 | 2164 | |
09779c6d NP |
2165 | if (lp->datacs) |
2166 | iounmap(lp->datacs); | |
1da177e4 | 2167 | |
09779c6d | 2168 | lp->datacs = NULL; |
1da177e4 | 2169 | |
09779c6d NP |
2170 | if (res) |
2171 | release_mem_region(res->start, SMC_DATA_EXTENT); | |
2172 | } | |
1da177e4 | 2173 | } |
1da177e4 LT |
2174 | |
2175 | /* | |
2176 | * smc_init(void) | |
2177 | * Input parameters: | |
2178 | * dev->base_addr == 0, try to find all possible locations | |
2179 | * dev->base_addr > 0x1ff, this is the address to check | |
2180 | * dev->base_addr == <anything else>, return failure code | |
2181 | * | |
2182 | * Output: | |
2183 | * 0 --> there is a device | |
2184 | * anything else, error | |
2185 | */ | |
3ae5eaec | 2186 | static int smc_drv_probe(struct platform_device *pdev) |
1da177e4 | 2187 | { |
1da177e4 LT |
2188 | struct net_device *ndev; |
2189 | struct resource *res; | |
2190 | unsigned int __iomem *addr; | |
2191 | int ret; | |
2192 | ||
2193 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-regs"); | |
2194 | if (!res) | |
2195 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
2196 | if (!res) { | |
2197 | ret = -ENODEV; | |
2198 | goto out; | |
2199 | } | |
2200 | ||
2201 | ||
2202 | if (!request_mem_region(res->start, SMC_IO_EXTENT, CARDNAME)) { | |
2203 | ret = -EBUSY; | |
2204 | goto out; | |
2205 | } | |
2206 | ||
2207 | ndev = alloc_etherdev(sizeof(struct smc_local)); | |
2208 | if (!ndev) { | |
2209 | printk("%s: could not allocate device.\n", CARDNAME); | |
2210 | ret = -ENOMEM; | |
2211 | goto out_release_io; | |
2212 | } | |
2213 | SET_MODULE_OWNER(ndev); | |
3ae5eaec | 2214 | SET_NETDEV_DEV(ndev, &pdev->dev); |
1da177e4 LT |
2215 | |
2216 | ndev->dma = (unsigned char)-1; | |
2217 | ndev->irq = platform_get_irq(pdev, 0); | |
48944738 DV |
2218 | if (ndev->irq < 0) { |
2219 | ret = -ENODEV; | |
2220 | goto out_free_netdev; | |
2221 | } | |
1da177e4 LT |
2222 | |
2223 | ret = smc_request_attrib(pdev); | |
2224 | if (ret) | |
2225 | goto out_free_netdev; | |
2226 | #if defined(CONFIG_SA1100_ASSABET) | |
2227 | NCR_0 |= NCR_ENET_OSC_EN; | |
2228 | #endif | |
2229 | ret = smc_enable_device(pdev); | |
2230 | if (ret) | |
2231 | goto out_release_attrib; | |
2232 | ||
2233 | addr = ioremap(res->start, SMC_IO_EXTENT); | |
2234 | if (!addr) { | |
2235 | ret = -ENOMEM; | |
2236 | goto out_release_attrib; | |
2237 | } | |
2238 | ||
3ae5eaec | 2239 | platform_set_drvdata(pdev, ndev); |
1da177e4 LT |
2240 | ret = smc_probe(ndev, addr); |
2241 | if (ret != 0) | |
2242 | goto out_iounmap; | |
2243 | #ifdef SMC_USE_PXA_DMA | |
2244 | else { | |
2245 | struct smc_local *lp = netdev_priv(ndev); | |
2246 | lp->physaddr = res->start; | |
2247 | } | |
2248 | #endif | |
2249 | ||
2250 | smc_request_datacs(pdev, ndev); | |
2251 | ||
2252 | return 0; | |
2253 | ||
2254 | out_iounmap: | |
3ae5eaec | 2255 | platform_set_drvdata(pdev, NULL); |
1da177e4 LT |
2256 | iounmap(addr); |
2257 | out_release_attrib: | |
2258 | smc_release_attrib(pdev); | |
2259 | out_free_netdev: | |
2260 | free_netdev(ndev); | |
2261 | out_release_io: | |
2262 | release_mem_region(res->start, SMC_IO_EXTENT); | |
2263 | out: | |
2264 | printk("%s: not found (%d).\n", CARDNAME, ret); | |
2265 | ||
2266 | return ret; | |
2267 | } | |
2268 | ||
3ae5eaec | 2269 | static int smc_drv_remove(struct platform_device *pdev) |
1da177e4 | 2270 | { |
3ae5eaec | 2271 | struct net_device *ndev = platform_get_drvdata(pdev); |
1da177e4 LT |
2272 | struct smc_local *lp = netdev_priv(ndev); |
2273 | struct resource *res; | |
2274 | ||
3ae5eaec | 2275 | platform_set_drvdata(pdev, NULL); |
1da177e4 LT |
2276 | |
2277 | unregister_netdev(ndev); | |
2278 | ||
2279 | free_irq(ndev->irq, ndev); | |
2280 | ||
2281 | #ifdef SMC_USE_PXA_DMA | |
2282 | if (ndev->dma != (unsigned char)-1) | |
2283 | pxa_free_dma(ndev->dma); | |
2284 | #endif | |
2285 | iounmap(lp->base); | |
2286 | ||
2287 | smc_release_datacs(pdev,ndev); | |
2288 | smc_release_attrib(pdev); | |
2289 | ||
2290 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-regs"); | |
2291 | if (!res) | |
2292 | platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
2293 | release_mem_region(res->start, SMC_IO_EXTENT); | |
2294 | ||
2295 | free_netdev(ndev); | |
2296 | ||
2297 | return 0; | |
2298 | } | |
2299 | ||
3ae5eaec | 2300 | static int smc_drv_suspend(struct platform_device *dev, pm_message_t state) |
1da177e4 | 2301 | { |
3ae5eaec | 2302 | struct net_device *ndev = platform_get_drvdata(dev); |
1da177e4 | 2303 | |
9480e307 | 2304 | if (ndev) { |
1da177e4 LT |
2305 | if (netif_running(ndev)) { |
2306 | netif_device_detach(ndev); | |
2307 | smc_shutdown(ndev); | |
2308 | smc_phy_powerdown(ndev); | |
2309 | } | |
2310 | } | |
2311 | return 0; | |
2312 | } | |
2313 | ||
3ae5eaec | 2314 | static int smc_drv_resume(struct platform_device *dev) |
1da177e4 | 2315 | { |
3ae5eaec | 2316 | struct net_device *ndev = platform_get_drvdata(dev); |
1da177e4 | 2317 | |
9480e307 | 2318 | if (ndev) { |
1da177e4 | 2319 | struct smc_local *lp = netdev_priv(ndev); |
3ae5eaec | 2320 | smc_enable_device(dev); |
1da177e4 LT |
2321 | if (netif_running(ndev)) { |
2322 | smc_reset(ndev); | |
2323 | smc_enable(ndev); | |
2324 | if (lp->phy_type != 0) | |
2325 | smc_phy_configure(ndev); | |
2326 | netif_device_attach(ndev); | |
2327 | } | |
2328 | } | |
2329 | return 0; | |
2330 | } | |
2331 | ||
3ae5eaec | 2332 | static struct platform_driver smc_driver = { |
1da177e4 LT |
2333 | .probe = smc_drv_probe, |
2334 | .remove = smc_drv_remove, | |
2335 | .suspend = smc_drv_suspend, | |
2336 | .resume = smc_drv_resume, | |
3ae5eaec RK |
2337 | .driver = { |
2338 | .name = CARDNAME, | |
2339 | }, | |
1da177e4 LT |
2340 | }; |
2341 | ||
2342 | static int __init smc_init(void) | |
2343 | { | |
2344 | #ifdef MODULE | |
2345 | #ifdef CONFIG_ISA | |
2346 | if (io == -1) | |
6aa20a22 | 2347 | printk(KERN_WARNING |
1da177e4 LT |
2348 | "%s: You shouldn't use auto-probing with insmod!\n", |
2349 | CARDNAME); | |
2350 | #endif | |
2351 | #endif | |
2352 | ||
3ae5eaec | 2353 | return platform_driver_register(&smc_driver); |
1da177e4 LT |
2354 | } |
2355 | ||
2356 | static void __exit smc_cleanup(void) | |
2357 | { | |
3ae5eaec | 2358 | platform_driver_unregister(&smc_driver); |
1da177e4 LT |
2359 | } |
2360 | ||
2361 | module_init(smc_init); | |
2362 | module_exit(smc_cleanup); |