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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; | |
6d5aefb8 | 213 | struct net_device *dev; |
1da177e4 LT |
214 | int work_pending; |
215 | ||
216 | spinlock_t lock; | |
217 | ||
1da177e4 LT |
218 | #ifdef SMC_USE_PXA_DMA |
219 | /* DMA needs the physical address of the chip */ | |
220 | u_long physaddr; | |
221 | #endif | |
222 | void __iomem *base; | |
09779c6d | 223 | void __iomem *datacs; |
1da177e4 LT |
224 | }; |
225 | ||
226 | #if SMC_DEBUG > 0 | |
227 | #define DBG(n, args...) \ | |
228 | do { \ | |
229 | if (SMC_DEBUG >= (n)) \ | |
230 | printk(args); \ | |
231 | } while (0) | |
232 | ||
233 | #define PRINTK(args...) printk(args) | |
234 | #else | |
235 | #define DBG(n, args...) do { } while(0) | |
236 | #define PRINTK(args...) printk(KERN_DEBUG args) | |
237 | #endif | |
238 | ||
239 | #if SMC_DEBUG > 3 | |
240 | static void PRINT_PKT(u_char *buf, int length) | |
241 | { | |
242 | int i; | |
243 | int remainder; | |
244 | int lines; | |
245 | ||
246 | lines = length / 16; | |
247 | remainder = length % 16; | |
248 | ||
249 | for (i = 0; i < lines ; i ++) { | |
250 | int cur; | |
251 | for (cur = 0; cur < 8; cur++) { | |
252 | u_char a, b; | |
253 | a = *buf++; | |
254 | b = *buf++; | |
255 | printk("%02x%02x ", a, b); | |
256 | } | |
257 | printk("\n"); | |
258 | } | |
259 | for (i = 0; i < remainder/2 ; i++) { | |
260 | u_char a, b; | |
261 | a = *buf++; | |
262 | b = *buf++; | |
263 | printk("%02x%02x ", a, b); | |
264 | } | |
265 | printk("\n"); | |
266 | } | |
267 | #else | |
268 | #define PRINT_PKT(x...) do { } while(0) | |
269 | #endif | |
270 | ||
271 | ||
272 | /* this enables an interrupt in the interrupt mask register */ | |
273 | #define SMC_ENABLE_INT(x) do { \ | |
274 | unsigned char mask; \ | |
275 | spin_lock_irq(&lp->lock); \ | |
276 | mask = SMC_GET_INT_MASK(); \ | |
277 | mask |= (x); \ | |
278 | SMC_SET_INT_MASK(mask); \ | |
279 | spin_unlock_irq(&lp->lock); \ | |
280 | } while (0) | |
281 | ||
282 | /* this disables an interrupt from the interrupt mask register */ | |
283 | #define SMC_DISABLE_INT(x) do { \ | |
284 | unsigned char mask; \ | |
285 | spin_lock_irq(&lp->lock); \ | |
286 | mask = SMC_GET_INT_MASK(); \ | |
287 | mask &= ~(x); \ | |
288 | SMC_SET_INT_MASK(mask); \ | |
289 | spin_unlock_irq(&lp->lock); \ | |
290 | } while (0) | |
291 | ||
292 | /* | |
293 | * Wait while MMU is busy. This is usually in the order of a few nanosecs | |
294 | * if at all, but let's avoid deadlocking the system if the hardware | |
295 | * decides to go south. | |
296 | */ | |
297 | #define SMC_WAIT_MMU_BUSY() do { \ | |
298 | if (unlikely(SMC_GET_MMU_CMD() & MC_BUSY)) { \ | |
299 | unsigned long timeout = jiffies + 2; \ | |
300 | while (SMC_GET_MMU_CMD() & MC_BUSY) { \ | |
301 | if (time_after(jiffies, timeout)) { \ | |
302 | printk("%s: timeout %s line %d\n", \ | |
303 | dev->name, __FILE__, __LINE__); \ | |
304 | break; \ | |
305 | } \ | |
306 | cpu_relax(); \ | |
307 | } \ | |
308 | } \ | |
309 | } while (0) | |
310 | ||
311 | ||
312 | /* | |
313 | * this does a soft reset on the device | |
314 | */ | |
315 | static void smc_reset(struct net_device *dev) | |
316 | { | |
317 | struct smc_local *lp = netdev_priv(dev); | |
318 | void __iomem *ioaddr = lp->base; | |
319 | unsigned int ctl, cfg; | |
be83668a | 320 | struct sk_buff *pending_skb; |
1da177e4 LT |
321 | |
322 | DBG(2, "%s: %s\n", dev->name, __FUNCTION__); | |
323 | ||
be83668a | 324 | /* Disable all interrupts, block TX tasklet */ |
76cb4fe7 | 325 | spin_lock_irq(&lp->lock); |
1da177e4 LT |
326 | SMC_SELECT_BANK(2); |
327 | SMC_SET_INT_MASK(0); | |
be83668a NP |
328 | pending_skb = lp->pending_tx_skb; |
329 | lp->pending_tx_skb = NULL; | |
76cb4fe7 | 330 | spin_unlock_irq(&lp->lock); |
1da177e4 | 331 | |
be83668a NP |
332 | /* free any pending tx skb */ |
333 | if (pending_skb) { | |
334 | dev_kfree_skb(pending_skb); | |
335 | lp->stats.tx_errors++; | |
336 | lp->stats.tx_aborted_errors++; | |
337 | } | |
338 | ||
1da177e4 LT |
339 | /* |
340 | * This resets the registers mostly to defaults, but doesn't | |
341 | * affect EEPROM. That seems unnecessary | |
342 | */ | |
343 | SMC_SELECT_BANK(0); | |
344 | SMC_SET_RCR(RCR_SOFTRST); | |
345 | ||
346 | /* | |
347 | * Setup the Configuration Register | |
348 | * This is necessary because the CONFIG_REG is not affected | |
349 | * by a soft reset | |
350 | */ | |
351 | SMC_SELECT_BANK(1); | |
352 | ||
353 | cfg = CONFIG_DEFAULT; | |
354 | ||
355 | /* | |
356 | * Setup for fast accesses if requested. If the card/system | |
357 | * can't handle it then there will be no recovery except for | |
358 | * a hard reset or power cycle | |
359 | */ | |
360 | if (nowait) | |
361 | cfg |= CONFIG_NO_WAIT; | |
362 | ||
363 | /* | |
364 | * Release from possible power-down state | |
365 | * Configuration register is not affected by Soft Reset | |
366 | */ | |
367 | cfg |= CONFIG_EPH_POWER_EN; | |
368 | ||
369 | SMC_SET_CONFIG(cfg); | |
370 | ||
371 | /* this should pause enough for the chip to be happy */ | |
372 | /* | |
373 | * elaborate? What does the chip _need_? --jgarzik | |
374 | * | |
375 | * This seems to be undocumented, but something the original | |
376 | * driver(s) have always done. Suspect undocumented timing | |
377 | * info/determined empirically. --rmk | |
378 | */ | |
379 | udelay(1); | |
380 | ||
381 | /* Disable transmit and receive functionality */ | |
382 | SMC_SELECT_BANK(0); | |
383 | SMC_SET_RCR(RCR_CLEAR); | |
384 | SMC_SET_TCR(TCR_CLEAR); | |
385 | ||
386 | SMC_SELECT_BANK(1); | |
387 | ctl = SMC_GET_CTL() | CTL_LE_ENABLE; | |
388 | ||
389 | /* | |
390 | * Set the control register to automatically release successfully | |
391 | * transmitted packets, to make the best use out of our limited | |
392 | * memory | |
393 | */ | |
394 | if(!THROTTLE_TX_PKTS) | |
395 | ctl |= CTL_AUTO_RELEASE; | |
396 | else | |
397 | ctl &= ~CTL_AUTO_RELEASE; | |
398 | SMC_SET_CTL(ctl); | |
399 | ||
400 | /* Reset the MMU */ | |
401 | SMC_SELECT_BANK(2); | |
402 | SMC_SET_MMU_CMD(MC_RESET); | |
403 | SMC_WAIT_MMU_BUSY(); | |
1da177e4 LT |
404 | } |
405 | ||
406 | /* | |
407 | * Enable Interrupts, Receive, and Transmit | |
408 | */ | |
409 | static void smc_enable(struct net_device *dev) | |
410 | { | |
411 | struct smc_local *lp = netdev_priv(dev); | |
412 | void __iomem *ioaddr = lp->base; | |
413 | int mask; | |
414 | ||
415 | DBG(2, "%s: %s\n", dev->name, __FUNCTION__); | |
416 | ||
417 | /* see the header file for options in TCR/RCR DEFAULT */ | |
418 | SMC_SELECT_BANK(0); | |
419 | SMC_SET_TCR(lp->tcr_cur_mode); | |
420 | SMC_SET_RCR(lp->rcr_cur_mode); | |
421 | ||
422 | SMC_SELECT_BANK(1); | |
423 | SMC_SET_MAC_ADDR(dev->dev_addr); | |
424 | ||
425 | /* now, enable interrupts */ | |
426 | mask = IM_EPH_INT|IM_RX_OVRN_INT|IM_RCV_INT; | |
427 | if (lp->version >= (CHIP_91100 << 4)) | |
428 | mask |= IM_MDINT; | |
429 | SMC_SELECT_BANK(2); | |
430 | SMC_SET_INT_MASK(mask); | |
431 | ||
432 | /* | |
433 | * From this point the register bank must _NOT_ be switched away | |
434 | * to something else than bank 2 without proper locking against | |
435 | * races with any tasklet or interrupt handlers until smc_shutdown() | |
436 | * or smc_reset() is called. | |
437 | */ | |
438 | } | |
439 | ||
440 | /* | |
441 | * this puts the device in an inactive state | |
442 | */ | |
443 | static void smc_shutdown(struct net_device *dev) | |
444 | { | |
445 | struct smc_local *lp = netdev_priv(dev); | |
446 | void __iomem *ioaddr = lp->base; | |
be83668a | 447 | struct sk_buff *pending_skb; |
1da177e4 LT |
448 | |
449 | DBG(2, "%s: %s\n", CARDNAME, __FUNCTION__); | |
450 | ||
451 | /* no more interrupts for me */ | |
76cb4fe7 | 452 | spin_lock_irq(&lp->lock); |
1da177e4 LT |
453 | SMC_SELECT_BANK(2); |
454 | SMC_SET_INT_MASK(0); | |
be83668a NP |
455 | pending_skb = lp->pending_tx_skb; |
456 | lp->pending_tx_skb = NULL; | |
76cb4fe7 | 457 | spin_unlock_irq(&lp->lock); |
be83668a NP |
458 | if (pending_skb) |
459 | dev_kfree_skb(pending_skb); | |
1da177e4 LT |
460 | |
461 | /* and tell the card to stay away from that nasty outside world */ | |
462 | SMC_SELECT_BANK(0); | |
463 | SMC_SET_RCR(RCR_CLEAR); | |
464 | SMC_SET_TCR(TCR_CLEAR); | |
465 | ||
466 | #ifdef POWER_DOWN | |
467 | /* finally, shut the chip down */ | |
468 | SMC_SELECT_BANK(1); | |
469 | SMC_SET_CONFIG(SMC_GET_CONFIG() & ~CONFIG_EPH_POWER_EN); | |
470 | #endif | |
471 | } | |
472 | ||
473 | /* | |
474 | * This is the procedure to handle the receipt of a packet. | |
475 | */ | |
476 | static inline void smc_rcv(struct net_device *dev) | |
477 | { | |
478 | struct smc_local *lp = netdev_priv(dev); | |
479 | void __iomem *ioaddr = lp->base; | |
480 | unsigned int packet_number, status, packet_len; | |
481 | ||
482 | DBG(3, "%s: %s\n", dev->name, __FUNCTION__); | |
483 | ||
484 | packet_number = SMC_GET_RXFIFO(); | |
485 | if (unlikely(packet_number & RXFIFO_REMPTY)) { | |
486 | PRINTK("%s: smc_rcv with nothing on FIFO.\n", dev->name); | |
487 | return; | |
488 | } | |
489 | ||
490 | /* read from start of packet */ | |
491 | SMC_SET_PTR(PTR_READ | PTR_RCV | PTR_AUTOINC); | |
492 | ||
493 | /* First two words are status and packet length */ | |
494 | SMC_GET_PKT_HDR(status, packet_len); | |
495 | packet_len &= 0x07ff; /* mask off top bits */ | |
496 | DBG(2, "%s: RX PNR 0x%x STATUS 0x%04x LENGTH 0x%04x (%d)\n", | |
497 | dev->name, packet_number, status, | |
498 | packet_len, packet_len); | |
499 | ||
500 | back: | |
501 | if (unlikely(packet_len < 6 || status & RS_ERRORS)) { | |
502 | if (status & RS_TOOLONG && packet_len <= (1514 + 4 + 6)) { | |
503 | /* accept VLAN packets */ | |
504 | status &= ~RS_TOOLONG; | |
505 | goto back; | |
506 | } | |
507 | if (packet_len < 6) { | |
508 | /* bloody hardware */ | |
509 | printk(KERN_ERR "%s: fubar (rxlen %u status %x\n", | |
510 | dev->name, packet_len, status); | |
511 | status |= RS_TOOSHORT; | |
512 | } | |
513 | SMC_WAIT_MMU_BUSY(); | |
514 | SMC_SET_MMU_CMD(MC_RELEASE); | |
515 | lp->stats.rx_errors++; | |
516 | if (status & RS_ALGNERR) | |
517 | lp->stats.rx_frame_errors++; | |
518 | if (status & (RS_TOOSHORT | RS_TOOLONG)) | |
519 | lp->stats.rx_length_errors++; | |
520 | if (status & RS_BADCRC) | |
521 | lp->stats.rx_crc_errors++; | |
522 | } else { | |
523 | struct sk_buff *skb; | |
524 | unsigned char *data; | |
525 | unsigned int data_len; | |
526 | ||
527 | /* set multicast stats */ | |
528 | if (status & RS_MULTICAST) | |
529 | lp->stats.multicast++; | |
530 | ||
531 | /* | |
532 | * Actual payload is packet_len - 6 (or 5 if odd byte). | |
533 | * We want skb_reserve(2) and the final ctrl word | |
534 | * (2 bytes, possibly containing the payload odd byte). | |
535 | * Furthermore, we add 2 bytes to allow rounding up to | |
536 | * multiple of 4 bytes on 32 bit buses. | |
537 | * Hence packet_len - 6 + 2 + 2 + 2. | |
538 | */ | |
539 | skb = dev_alloc_skb(packet_len); | |
540 | if (unlikely(skb == NULL)) { | |
541 | printk(KERN_NOTICE "%s: Low memory, packet dropped.\n", | |
542 | dev->name); | |
543 | SMC_WAIT_MMU_BUSY(); | |
544 | SMC_SET_MMU_CMD(MC_RELEASE); | |
545 | lp->stats.rx_dropped++; | |
546 | return; | |
547 | } | |
548 | ||
549 | /* Align IP header to 32 bits */ | |
550 | skb_reserve(skb, 2); | |
551 | ||
552 | /* BUG: the LAN91C111 rev A never sets this bit. Force it. */ | |
553 | if (lp->version == 0x90) | |
554 | status |= RS_ODDFRAME; | |
555 | ||
556 | /* | |
557 | * If odd length: packet_len - 5, | |
558 | * otherwise packet_len - 6. | |
559 | * With the trailing ctrl byte it's packet_len - 4. | |
560 | */ | |
561 | data_len = packet_len - ((status & RS_ODDFRAME) ? 5 : 6); | |
562 | data = skb_put(skb, data_len); | |
563 | SMC_PULL_DATA(data, packet_len - 4); | |
564 | ||
565 | SMC_WAIT_MMU_BUSY(); | |
566 | SMC_SET_MMU_CMD(MC_RELEASE); | |
567 | ||
568 | PRINT_PKT(data, packet_len - 4); | |
569 | ||
570 | dev->last_rx = jiffies; | |
571 | skb->dev = dev; | |
572 | skb->protocol = eth_type_trans(skb, dev); | |
573 | netif_rx(skb); | |
574 | lp->stats.rx_packets++; | |
575 | lp->stats.rx_bytes += data_len; | |
576 | } | |
577 | } | |
578 | ||
579 | #ifdef CONFIG_SMP | |
580 | /* | |
581 | * On SMP we have the following problem: | |
582 | * | |
583 | * A = smc_hardware_send_pkt() | |
584 | * B = smc_hard_start_xmit() | |
585 | * C = smc_interrupt() | |
586 | * | |
587 | * A and B can never be executed simultaneously. However, at least on UP, | |
588 | * it is possible (and even desirable) for C to interrupt execution of | |
589 | * A or B in order to have better RX reliability and avoid overruns. | |
590 | * C, just like A and B, must have exclusive access to the chip and | |
591 | * each of them must lock against any other concurrent access. | |
592 | * Unfortunately this is not possible to have C suspend execution of A or | |
593 | * B taking place on another CPU. On UP this is no an issue since A and B | |
594 | * are run from softirq context and C from hard IRQ context, and there is | |
595 | * no other CPU where concurrent access can happen. | |
596 | * If ever there is a way to force at least B and C to always be executed | |
597 | * on the same CPU then we could use read/write locks to protect against | |
598 | * any other concurrent access and C would always interrupt B. But life | |
599 | * isn't that easy in a SMP world... | |
600 | */ | |
601 | #define smc_special_trylock(lock) \ | |
602 | ({ \ | |
603 | int __ret; \ | |
604 | local_irq_disable(); \ | |
605 | __ret = spin_trylock(lock); \ | |
606 | if (!__ret) \ | |
607 | local_irq_enable(); \ | |
608 | __ret; \ | |
609 | }) | |
610 | #define smc_special_lock(lock) spin_lock_irq(lock) | |
611 | #define smc_special_unlock(lock) spin_unlock_irq(lock) | |
612 | #else | |
613 | #define smc_special_trylock(lock) (1) | |
614 | #define smc_special_lock(lock) do { } while (0) | |
615 | #define smc_special_unlock(lock) do { } while (0) | |
616 | #endif | |
617 | ||
618 | /* | |
619 | * This is called to actually send a packet to the chip. | |
620 | */ | |
621 | static void smc_hardware_send_pkt(unsigned long data) | |
622 | { | |
623 | struct net_device *dev = (struct net_device *)data; | |
624 | struct smc_local *lp = netdev_priv(dev); | |
625 | void __iomem *ioaddr = lp->base; | |
626 | struct sk_buff *skb; | |
627 | unsigned int packet_no, len; | |
628 | unsigned char *buf; | |
629 | ||
630 | DBG(3, "%s: %s\n", dev->name, __FUNCTION__); | |
631 | ||
632 | if (!smc_special_trylock(&lp->lock)) { | |
633 | netif_stop_queue(dev); | |
634 | tasklet_schedule(&lp->tx_task); | |
635 | return; | |
636 | } | |
637 | ||
638 | skb = lp->pending_tx_skb; | |
be83668a NP |
639 | if (unlikely(!skb)) { |
640 | smc_special_unlock(&lp->lock); | |
641 | return; | |
642 | } | |
1da177e4 | 643 | lp->pending_tx_skb = NULL; |
be83668a | 644 | |
1da177e4 LT |
645 | packet_no = SMC_GET_AR(); |
646 | if (unlikely(packet_no & AR_FAILED)) { | |
647 | printk("%s: Memory allocation failed.\n", dev->name); | |
648 | lp->stats.tx_errors++; | |
649 | lp->stats.tx_fifo_errors++; | |
650 | smc_special_unlock(&lp->lock); | |
651 | goto done; | |
652 | } | |
653 | ||
654 | /* point to the beginning of the packet */ | |
655 | SMC_SET_PN(packet_no); | |
656 | SMC_SET_PTR(PTR_AUTOINC); | |
657 | ||
658 | buf = skb->data; | |
659 | len = skb->len; | |
660 | DBG(2, "%s: TX PNR 0x%x LENGTH 0x%04x (%d) BUF 0x%p\n", | |
661 | dev->name, packet_no, len, len, buf); | |
662 | PRINT_PKT(buf, len); | |
663 | ||
664 | /* | |
665 | * Send the packet length (+6 for status words, length, and ctl. | |
666 | * The card will pad to 64 bytes with zeroes if packet is too small. | |
667 | */ | |
668 | SMC_PUT_PKT_HDR(0, len + 6); | |
669 | ||
670 | /* send the actual data */ | |
671 | SMC_PUSH_DATA(buf, len & ~1); | |
672 | ||
673 | /* Send final ctl word with the last byte if there is one */ | |
674 | SMC_outw(((len & 1) ? (0x2000 | buf[len-1]) : 0), ioaddr, DATA_REG); | |
675 | ||
676 | /* | |
ea937560 NP |
677 | * If THROTTLE_TX_PKTS is set, we stop the queue here. This will |
678 | * have the effect of having at most one packet queued for TX | |
679 | * in the chip's memory at all time. | |
680 | * | |
681 | * If THROTTLE_TX_PKTS is not set then the queue is stopped only | |
682 | * when memory allocation (MC_ALLOC) does not succeed right away. | |
1da177e4 | 683 | */ |
ea937560 | 684 | if (THROTTLE_TX_PKTS) |
1da177e4 LT |
685 | netif_stop_queue(dev); |
686 | ||
687 | /* queue the packet for TX */ | |
688 | SMC_SET_MMU_CMD(MC_ENQUEUE); | |
1da177e4 LT |
689 | smc_special_unlock(&lp->lock); |
690 | ||
691 | dev->trans_start = jiffies; | |
692 | lp->stats.tx_packets++; | |
693 | lp->stats.tx_bytes += len; | |
694 | ||
695 | SMC_ENABLE_INT(IM_TX_INT | IM_TX_EMPTY_INT); | |
696 | ||
697 | done: if (!THROTTLE_TX_PKTS) | |
698 | netif_wake_queue(dev); | |
699 | ||
700 | dev_kfree_skb(skb); | |
701 | } | |
702 | ||
703 | /* | |
704 | * Since I am not sure if I will have enough room in the chip's ram | |
705 | * to store the packet, I call this routine which either sends it | |
706 | * now, or set the card to generates an interrupt when ready | |
707 | * for the packet. | |
708 | */ | |
709 | static int smc_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
710 | { | |
711 | struct smc_local *lp = netdev_priv(dev); | |
712 | void __iomem *ioaddr = lp->base; | |
713 | unsigned int numPages, poll_count, status; | |
714 | ||
715 | DBG(3, "%s: %s\n", dev->name, __FUNCTION__); | |
716 | ||
717 | BUG_ON(lp->pending_tx_skb != NULL); | |
1da177e4 LT |
718 | |
719 | /* | |
720 | * The MMU wants the number of pages to be the number of 256 bytes | |
721 | * 'pages', minus 1 (since a packet can't ever have 0 pages :)) | |
722 | * | |
723 | * The 91C111 ignores the size bits, but earlier models don't. | |
724 | * | |
725 | * Pkt size for allocating is data length +6 (for additional status | |
726 | * words, length and ctl) | |
727 | * | |
728 | * If odd size then last byte is included in ctl word. | |
729 | */ | |
730 | numPages = ((skb->len & ~1) + (6 - 1)) >> 8; | |
731 | if (unlikely(numPages > 7)) { | |
732 | printk("%s: Far too big packet error.\n", dev->name); | |
1da177e4 LT |
733 | lp->stats.tx_errors++; |
734 | lp->stats.tx_dropped++; | |
735 | dev_kfree_skb(skb); | |
736 | return 0; | |
737 | } | |
738 | ||
739 | smc_special_lock(&lp->lock); | |
740 | ||
741 | /* now, try to allocate the memory */ | |
742 | SMC_SET_MMU_CMD(MC_ALLOC | numPages); | |
743 | ||
744 | /* | |
745 | * Poll the chip for a short amount of time in case the | |
746 | * allocation succeeds quickly. | |
747 | */ | |
748 | poll_count = MEMORY_WAIT_TIME; | |
749 | do { | |
750 | status = SMC_GET_INT(); | |
751 | if (status & IM_ALLOC_INT) { | |
752 | SMC_ACK_INT(IM_ALLOC_INT); | |
753 | break; | |
754 | } | |
755 | } while (--poll_count); | |
756 | ||
757 | smc_special_unlock(&lp->lock); | |
758 | ||
be83668a | 759 | lp->pending_tx_skb = skb; |
1da177e4 LT |
760 | if (!poll_count) { |
761 | /* oh well, wait until the chip finds memory later */ | |
762 | netif_stop_queue(dev); | |
763 | DBG(2, "%s: TX memory allocation deferred.\n", dev->name); | |
764 | SMC_ENABLE_INT(IM_ALLOC_INT); | |
765 | } else { | |
766 | /* | |
767 | * Allocation succeeded: push packet to the chip's own memory | |
768 | * immediately. | |
6aa20a22 | 769 | */ |
1da177e4 LT |
770 | smc_hardware_send_pkt((unsigned long)dev); |
771 | } | |
772 | ||
773 | return 0; | |
774 | } | |
775 | ||
776 | /* | |
777 | * This handles a TX interrupt, which is only called when: | |
778 | * - a TX error occurred, or | |
779 | * - CTL_AUTO_RELEASE is not set and TX of a packet completed. | |
780 | */ | |
781 | static void smc_tx(struct net_device *dev) | |
782 | { | |
783 | struct smc_local *lp = netdev_priv(dev); | |
784 | void __iomem *ioaddr = lp->base; | |
785 | unsigned int saved_packet, packet_no, tx_status, pkt_len; | |
786 | ||
787 | DBG(3, "%s: %s\n", dev->name, __FUNCTION__); | |
788 | ||
789 | /* If the TX FIFO is empty then nothing to do */ | |
790 | packet_no = SMC_GET_TXFIFO(); | |
791 | if (unlikely(packet_no & TXFIFO_TEMPTY)) { | |
792 | PRINTK("%s: smc_tx with nothing on FIFO.\n", dev->name); | |
793 | return; | |
794 | } | |
795 | ||
796 | /* select packet to read from */ | |
797 | saved_packet = SMC_GET_PN(); | |
798 | SMC_SET_PN(packet_no); | |
799 | ||
800 | /* read the first word (status word) from this packet */ | |
801 | SMC_SET_PTR(PTR_AUTOINC | PTR_READ); | |
802 | SMC_GET_PKT_HDR(tx_status, pkt_len); | |
803 | DBG(2, "%s: TX STATUS 0x%04x PNR 0x%02x\n", | |
804 | dev->name, tx_status, packet_no); | |
805 | ||
8de90115 | 806 | if (!(tx_status & ES_TX_SUC)) |
1da177e4 | 807 | lp->stats.tx_errors++; |
8de90115 NP |
808 | |
809 | if (tx_status & ES_LOSTCARR) | |
1da177e4 LT |
810 | lp->stats.tx_carrier_errors++; |
811 | ||
8de90115 NP |
812 | if (tx_status & (ES_LATCOL | ES_16COL)) { |
813 | PRINTK("%s: %s occurred on last xmit\n", dev->name, | |
814 | (tx_status & ES_LATCOL) ? | |
815 | "late collision" : "too many collisions"); | |
1da177e4 LT |
816 | lp->stats.tx_window_errors++; |
817 | if (!(lp->stats.tx_window_errors & 63) && net_ratelimit()) { | |
8de90115 NP |
818 | printk(KERN_INFO "%s: unexpectedly large number of " |
819 | "bad collisions. Please check duplex " | |
1da177e4 LT |
820 | "setting.\n", dev->name); |
821 | } | |
822 | } | |
823 | ||
824 | /* kill the packet */ | |
825 | SMC_WAIT_MMU_BUSY(); | |
826 | SMC_SET_MMU_CMD(MC_FREEPKT); | |
827 | ||
828 | /* Don't restore Packet Number Reg until busy bit is cleared */ | |
829 | SMC_WAIT_MMU_BUSY(); | |
830 | SMC_SET_PN(saved_packet); | |
831 | ||
832 | /* re-enable transmit */ | |
833 | SMC_SELECT_BANK(0); | |
834 | SMC_SET_TCR(lp->tcr_cur_mode); | |
835 | SMC_SELECT_BANK(2); | |
836 | } | |
837 | ||
838 | ||
839 | /*---PHY CONTROL AND CONFIGURATION-----------------------------------------*/ | |
840 | ||
841 | static void smc_mii_out(struct net_device *dev, unsigned int val, int bits) | |
842 | { | |
843 | struct smc_local *lp = netdev_priv(dev); | |
844 | void __iomem *ioaddr = lp->base; | |
845 | unsigned int mii_reg, mask; | |
846 | ||
847 | mii_reg = SMC_GET_MII() & ~(MII_MCLK | MII_MDOE | MII_MDO); | |
848 | mii_reg |= MII_MDOE; | |
849 | ||
850 | for (mask = 1 << (bits - 1); mask; mask >>= 1) { | |
851 | if (val & mask) | |
852 | mii_reg |= MII_MDO; | |
853 | else | |
854 | mii_reg &= ~MII_MDO; | |
855 | ||
856 | SMC_SET_MII(mii_reg); | |
857 | udelay(MII_DELAY); | |
858 | SMC_SET_MII(mii_reg | MII_MCLK); | |
859 | udelay(MII_DELAY); | |
860 | } | |
861 | } | |
862 | ||
863 | static unsigned int smc_mii_in(struct net_device *dev, int bits) | |
864 | { | |
865 | struct smc_local *lp = netdev_priv(dev); | |
866 | void __iomem *ioaddr = lp->base; | |
867 | unsigned int mii_reg, mask, val; | |
868 | ||
869 | mii_reg = SMC_GET_MII() & ~(MII_MCLK | MII_MDOE | MII_MDO); | |
870 | SMC_SET_MII(mii_reg); | |
871 | ||
872 | for (mask = 1 << (bits - 1), val = 0; mask; mask >>= 1) { | |
873 | if (SMC_GET_MII() & MII_MDI) | |
874 | val |= mask; | |
875 | ||
876 | SMC_SET_MII(mii_reg); | |
877 | udelay(MII_DELAY); | |
878 | SMC_SET_MII(mii_reg | MII_MCLK); | |
879 | udelay(MII_DELAY); | |
880 | } | |
881 | ||
882 | return val; | |
883 | } | |
884 | ||
885 | /* | |
886 | * Reads a register from the MII Management serial interface | |
887 | */ | |
888 | static int smc_phy_read(struct net_device *dev, int phyaddr, int phyreg) | |
889 | { | |
890 | struct smc_local *lp = netdev_priv(dev); | |
891 | void __iomem *ioaddr = lp->base; | |
892 | unsigned int phydata; | |
893 | ||
894 | SMC_SELECT_BANK(3); | |
895 | ||
896 | /* Idle - 32 ones */ | |
897 | smc_mii_out(dev, 0xffffffff, 32); | |
898 | ||
899 | /* Start code (01) + read (10) + phyaddr + phyreg */ | |
900 | smc_mii_out(dev, 6 << 10 | phyaddr << 5 | phyreg, 14); | |
901 | ||
902 | /* Turnaround (2bits) + phydata */ | |
903 | phydata = smc_mii_in(dev, 18); | |
904 | ||
905 | /* Return to idle state */ | |
906 | SMC_SET_MII(SMC_GET_MII() & ~(MII_MCLK|MII_MDOE|MII_MDO)); | |
907 | ||
908 | DBG(3, "%s: phyaddr=0x%x, phyreg=0x%x, phydata=0x%x\n", | |
909 | __FUNCTION__, phyaddr, phyreg, phydata); | |
910 | ||
911 | SMC_SELECT_BANK(2); | |
912 | return phydata; | |
913 | } | |
914 | ||
915 | /* | |
916 | * Writes a register to the MII Management serial interface | |
917 | */ | |
918 | static void smc_phy_write(struct net_device *dev, int phyaddr, int phyreg, | |
919 | int phydata) | |
920 | { | |
921 | struct smc_local *lp = netdev_priv(dev); | |
922 | void __iomem *ioaddr = lp->base; | |
923 | ||
924 | SMC_SELECT_BANK(3); | |
925 | ||
926 | /* Idle - 32 ones */ | |
927 | smc_mii_out(dev, 0xffffffff, 32); | |
928 | ||
929 | /* Start code (01) + write (01) + phyaddr + phyreg + turnaround + phydata */ | |
930 | smc_mii_out(dev, 5 << 28 | phyaddr << 23 | phyreg << 18 | 2 << 16 | phydata, 32); | |
931 | ||
932 | /* Return to idle state */ | |
933 | SMC_SET_MII(SMC_GET_MII() & ~(MII_MCLK|MII_MDOE|MII_MDO)); | |
934 | ||
935 | DBG(3, "%s: phyaddr=0x%x, phyreg=0x%x, phydata=0x%x\n", | |
936 | __FUNCTION__, phyaddr, phyreg, phydata); | |
937 | ||
938 | SMC_SELECT_BANK(2); | |
939 | } | |
940 | ||
941 | /* | |
942 | * Finds and reports the PHY address | |
943 | */ | |
944 | static void smc_phy_detect(struct net_device *dev) | |
945 | { | |
946 | struct smc_local *lp = netdev_priv(dev); | |
947 | int phyaddr; | |
948 | ||
949 | DBG(2, "%s: %s\n", dev->name, __FUNCTION__); | |
950 | ||
951 | lp->phy_type = 0; | |
952 | ||
953 | /* | |
954 | * Scan all 32 PHY addresses if necessary, starting at | |
955 | * PHY#1 to PHY#31, and then PHY#0 last. | |
956 | */ | |
957 | for (phyaddr = 1; phyaddr < 33; ++phyaddr) { | |
958 | unsigned int id1, id2; | |
959 | ||
960 | /* Read the PHY identifiers */ | |
961 | id1 = smc_phy_read(dev, phyaddr & 31, MII_PHYSID1); | |
962 | id2 = smc_phy_read(dev, phyaddr & 31, MII_PHYSID2); | |
963 | ||
964 | DBG(3, "%s: phy_id1=0x%x, phy_id2=0x%x\n", | |
965 | dev->name, id1, id2); | |
966 | ||
967 | /* Make sure it is a valid identifier */ | |
968 | if (id1 != 0x0000 && id1 != 0xffff && id1 != 0x8000 && | |
969 | id2 != 0x0000 && id2 != 0xffff && id2 != 0x8000) { | |
970 | /* Save the PHY's address */ | |
971 | lp->mii.phy_id = phyaddr & 31; | |
972 | lp->phy_type = id1 << 16 | id2; | |
973 | break; | |
974 | } | |
975 | } | |
976 | } | |
977 | ||
978 | /* | |
979 | * Sets the PHY to a configuration as determined by the user | |
980 | */ | |
981 | static int smc_phy_fixed(struct net_device *dev) | |
982 | { | |
983 | struct smc_local *lp = netdev_priv(dev); | |
984 | void __iomem *ioaddr = lp->base; | |
985 | int phyaddr = lp->mii.phy_id; | |
986 | int bmcr, cfg1; | |
987 | ||
988 | DBG(3, "%s: %s\n", dev->name, __FUNCTION__); | |
989 | ||
990 | /* Enter Link Disable state */ | |
991 | cfg1 = smc_phy_read(dev, phyaddr, PHY_CFG1_REG); | |
992 | cfg1 |= PHY_CFG1_LNKDIS; | |
993 | smc_phy_write(dev, phyaddr, PHY_CFG1_REG, cfg1); | |
994 | ||
995 | /* | |
996 | * Set our fixed capabilities | |
997 | * Disable auto-negotiation | |
998 | */ | |
999 | bmcr = 0; | |
1000 | ||
1001 | if (lp->ctl_rfduplx) | |
1002 | bmcr |= BMCR_FULLDPLX; | |
1003 | ||
1004 | if (lp->ctl_rspeed == 100) | |
1005 | bmcr |= BMCR_SPEED100; | |
1006 | ||
1007 | /* Write our capabilities to the phy control register */ | |
1008 | smc_phy_write(dev, phyaddr, MII_BMCR, bmcr); | |
1009 | ||
1010 | /* Re-Configure the Receive/Phy Control register */ | |
1011 | SMC_SELECT_BANK(0); | |
1012 | SMC_SET_RPC(lp->rpc_cur_mode); | |
1013 | SMC_SELECT_BANK(2); | |
1014 | ||
1015 | return 1; | |
1016 | } | |
1017 | ||
1018 | /* | |
1019 | * smc_phy_reset - reset the phy | |
1020 | * @dev: net device | |
1021 | * @phy: phy address | |
1022 | * | |
1023 | * Issue a software reset for the specified PHY and | |
1024 | * wait up to 100ms for the reset to complete. We should | |
1025 | * not access the PHY for 50ms after issuing the reset. | |
1026 | * | |
1027 | * The time to wait appears to be dependent on the PHY. | |
1028 | * | |
1029 | * Must be called with lp->lock locked. | |
1030 | */ | |
1031 | static int smc_phy_reset(struct net_device *dev, int phy) | |
1032 | { | |
1033 | struct smc_local *lp = netdev_priv(dev); | |
1034 | unsigned int bmcr; | |
1035 | int timeout; | |
1036 | ||
1037 | smc_phy_write(dev, phy, MII_BMCR, BMCR_RESET); | |
1038 | ||
1039 | for (timeout = 2; timeout; timeout--) { | |
1040 | spin_unlock_irq(&lp->lock); | |
1041 | msleep(50); | |
1042 | spin_lock_irq(&lp->lock); | |
1043 | ||
1044 | bmcr = smc_phy_read(dev, phy, MII_BMCR); | |
1045 | if (!(bmcr & BMCR_RESET)) | |
1046 | break; | |
1047 | } | |
1048 | ||
1049 | return bmcr & BMCR_RESET; | |
1050 | } | |
1051 | ||
1052 | /* | |
1053 | * smc_phy_powerdown - powerdown phy | |
1054 | * @dev: net device | |
1055 | * | |
1056 | * Power down the specified PHY | |
1057 | */ | |
1058 | static void smc_phy_powerdown(struct net_device *dev) | |
1059 | { | |
1060 | struct smc_local *lp = netdev_priv(dev); | |
1061 | unsigned int bmcr; | |
1062 | int phy = lp->mii.phy_id; | |
1063 | ||
1064 | if (lp->phy_type == 0) | |
1065 | return; | |
1066 | ||
1067 | /* We need to ensure that no calls to smc_phy_configure are | |
1068 | pending. | |
1069 | ||
1070 | flush_scheduled_work() cannot be called because we are | |
1071 | running with the netlink semaphore held (from | |
1072 | devinet_ioctl()) and the pending work queue contains | |
1073 | linkwatch_event() (scheduled by netif_carrier_off() | |
1074 | above). linkwatch_event() also wants the netlink semaphore. | |
1075 | */ | |
1076 | while(lp->work_pending) | |
be83668a | 1077 | yield(); |
1da177e4 LT |
1078 | |
1079 | bmcr = smc_phy_read(dev, phy, MII_BMCR); | |
1080 | smc_phy_write(dev, phy, MII_BMCR, bmcr | BMCR_PDOWN); | |
1081 | } | |
1082 | ||
1083 | /* | |
1084 | * smc_phy_check_media - check the media status and adjust TCR | |
1085 | * @dev: net device | |
1086 | * @init: set true for initialisation | |
1087 | * | |
1088 | * Select duplex mode depending on negotiation state. This | |
1089 | * also updates our carrier state. | |
1090 | */ | |
1091 | static void smc_phy_check_media(struct net_device *dev, int init) | |
1092 | { | |
1093 | struct smc_local *lp = netdev_priv(dev); | |
1094 | void __iomem *ioaddr = lp->base; | |
1095 | ||
1096 | if (mii_check_media(&lp->mii, netif_msg_link(lp), init)) { | |
1097 | /* duplex state has changed */ | |
1098 | if (lp->mii.full_duplex) { | |
1099 | lp->tcr_cur_mode |= TCR_SWFDUP; | |
1100 | } else { | |
1101 | lp->tcr_cur_mode &= ~TCR_SWFDUP; | |
1102 | } | |
1103 | ||
1104 | SMC_SELECT_BANK(0); | |
1105 | SMC_SET_TCR(lp->tcr_cur_mode); | |
1106 | } | |
1107 | } | |
1108 | ||
1109 | /* | |
1110 | * Configures the specified PHY through the MII management interface | |
1111 | * using Autonegotiation. | |
1112 | * Calls smc_phy_fixed() if the user has requested a certain config. | |
1113 | * If RPC ANEG bit is set, the media selection is dependent purely on | |
1114 | * the selection by the MII (either in the MII BMCR reg or the result | |
1115 | * of autonegotiation.) If the RPC ANEG bit is cleared, the selection | |
1116 | * is controlled by the RPC SPEED and RPC DPLX bits. | |
1117 | */ | |
6d5aefb8 | 1118 | static void smc_phy_configure(struct work_struct *work) |
1da177e4 | 1119 | { |
6d5aefb8 DH |
1120 | struct smc_local *lp = |
1121 | container_of(work, struct smc_local, phy_configure); | |
1122 | struct net_device *dev = lp->dev; | |
1da177e4 LT |
1123 | void __iomem *ioaddr = lp->base; |
1124 | int phyaddr = lp->mii.phy_id; | |
1125 | int my_phy_caps; /* My PHY capabilities */ | |
1126 | int my_ad_caps; /* My Advertised capabilities */ | |
1127 | int status; | |
1128 | ||
1129 | DBG(3, "%s:smc_program_phy()\n", dev->name); | |
1130 | ||
1131 | spin_lock_irq(&lp->lock); | |
1132 | ||
1133 | /* | |
1134 | * We should not be called if phy_type is zero. | |
1135 | */ | |
1136 | if (lp->phy_type == 0) | |
1137 | goto smc_phy_configure_exit; | |
1138 | ||
1139 | if (smc_phy_reset(dev, phyaddr)) { | |
1140 | printk("%s: PHY reset timed out\n", dev->name); | |
1141 | goto smc_phy_configure_exit; | |
1142 | } | |
1143 | ||
1144 | /* | |
1145 | * Enable PHY Interrupts (for register 18) | |
1146 | * Interrupts listed here are disabled | |
1147 | */ | |
1148 | smc_phy_write(dev, phyaddr, PHY_MASK_REG, | |
1149 | PHY_INT_LOSSSYNC | PHY_INT_CWRD | PHY_INT_SSD | | |
1150 | PHY_INT_ESD | PHY_INT_RPOL | PHY_INT_JAB | | |
1151 | PHY_INT_SPDDET | PHY_INT_DPLXDET); | |
1152 | ||
1153 | /* Configure the Receive/Phy Control register */ | |
1154 | SMC_SELECT_BANK(0); | |
1155 | SMC_SET_RPC(lp->rpc_cur_mode); | |
1156 | ||
1157 | /* If the user requested no auto neg, then go set his request */ | |
1158 | if (lp->mii.force_media) { | |
1159 | smc_phy_fixed(dev); | |
1160 | goto smc_phy_configure_exit; | |
1161 | } | |
1162 | ||
1163 | /* Copy our capabilities from MII_BMSR to MII_ADVERTISE */ | |
1164 | my_phy_caps = smc_phy_read(dev, phyaddr, MII_BMSR); | |
1165 | ||
1166 | if (!(my_phy_caps & BMSR_ANEGCAPABLE)) { | |
1167 | printk(KERN_INFO "Auto negotiation NOT supported\n"); | |
1168 | smc_phy_fixed(dev); | |
1169 | goto smc_phy_configure_exit; | |
1170 | } | |
1171 | ||
1172 | my_ad_caps = ADVERTISE_CSMA; /* I am CSMA capable */ | |
1173 | ||
1174 | if (my_phy_caps & BMSR_100BASE4) | |
1175 | my_ad_caps |= ADVERTISE_100BASE4; | |
1176 | if (my_phy_caps & BMSR_100FULL) | |
1177 | my_ad_caps |= ADVERTISE_100FULL; | |
1178 | if (my_phy_caps & BMSR_100HALF) | |
1179 | my_ad_caps |= ADVERTISE_100HALF; | |
1180 | if (my_phy_caps & BMSR_10FULL) | |
1181 | my_ad_caps |= ADVERTISE_10FULL; | |
1182 | if (my_phy_caps & BMSR_10HALF) | |
1183 | my_ad_caps |= ADVERTISE_10HALF; | |
1184 | ||
1185 | /* Disable capabilities not selected by our user */ | |
1186 | if (lp->ctl_rspeed != 100) | |
1187 | my_ad_caps &= ~(ADVERTISE_100BASE4|ADVERTISE_100FULL|ADVERTISE_100HALF); | |
1188 | ||
1189 | if (!lp->ctl_rfduplx) | |
1190 | my_ad_caps &= ~(ADVERTISE_100FULL|ADVERTISE_10FULL); | |
1191 | ||
1192 | /* Update our Auto-Neg Advertisement Register */ | |
1193 | smc_phy_write(dev, phyaddr, MII_ADVERTISE, my_ad_caps); | |
1194 | lp->mii.advertising = my_ad_caps; | |
1195 | ||
1196 | /* | |
1197 | * Read the register back. Without this, it appears that when | |
1198 | * auto-negotiation is restarted, sometimes it isn't ready and | |
1199 | * the link does not come up. | |
1200 | */ | |
1201 | status = smc_phy_read(dev, phyaddr, MII_ADVERTISE); | |
1202 | ||
1203 | DBG(2, "%s: phy caps=%x\n", dev->name, my_phy_caps); | |
1204 | DBG(2, "%s: phy advertised caps=%x\n", dev->name, my_ad_caps); | |
1205 | ||
1206 | /* Restart auto-negotiation process in order to advertise my caps */ | |
1207 | smc_phy_write(dev, phyaddr, MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART); | |
1208 | ||
1209 | smc_phy_check_media(dev, 1); | |
1210 | ||
1211 | smc_phy_configure_exit: | |
e5254244 | 1212 | SMC_SELECT_BANK(2); |
1da177e4 LT |
1213 | spin_unlock_irq(&lp->lock); |
1214 | lp->work_pending = 0; | |
1215 | } | |
1216 | ||
1217 | /* | |
1218 | * smc_phy_interrupt | |
1219 | * | |
1220 | * Purpose: Handle interrupts relating to PHY register 18. This is | |
1221 | * called from the "hard" interrupt handler under our private spinlock. | |
1222 | */ | |
1223 | static void smc_phy_interrupt(struct net_device *dev) | |
1224 | { | |
1225 | struct smc_local *lp = netdev_priv(dev); | |
1226 | int phyaddr = lp->mii.phy_id; | |
1227 | int phy18; | |
1228 | ||
1229 | DBG(2, "%s: %s\n", dev->name, __FUNCTION__); | |
1230 | ||
1231 | if (lp->phy_type == 0) | |
1232 | return; | |
1233 | ||
1234 | for(;;) { | |
1235 | smc_phy_check_media(dev, 0); | |
1236 | ||
1237 | /* Read PHY Register 18, Status Output */ | |
1238 | phy18 = smc_phy_read(dev, phyaddr, PHY_INT_REG); | |
1239 | if ((phy18 & PHY_INT_INT) == 0) | |
1240 | break; | |
1241 | } | |
1242 | } | |
1243 | ||
1244 | /*--- END PHY CONTROL AND CONFIGURATION-------------------------------------*/ | |
1245 | ||
1246 | static void smc_10bt_check_media(struct net_device *dev, int init) | |
1247 | { | |
1248 | struct smc_local *lp = netdev_priv(dev); | |
1249 | void __iomem *ioaddr = lp->base; | |
1250 | unsigned int old_carrier, new_carrier; | |
1251 | ||
1252 | old_carrier = netif_carrier_ok(dev) ? 1 : 0; | |
1253 | ||
1254 | SMC_SELECT_BANK(0); | |
8de90115 | 1255 | new_carrier = (SMC_GET_EPH_STATUS() & ES_LINK_OK) ? 1 : 0; |
1da177e4 LT |
1256 | SMC_SELECT_BANK(2); |
1257 | ||
1258 | if (init || (old_carrier != new_carrier)) { | |
1259 | if (!new_carrier) { | |
1260 | netif_carrier_off(dev); | |
1261 | } else { | |
1262 | netif_carrier_on(dev); | |
1263 | } | |
1264 | if (netif_msg_link(lp)) | |
1265 | printk(KERN_INFO "%s: link %s\n", dev->name, | |
1266 | new_carrier ? "up" : "down"); | |
1267 | } | |
1268 | } | |
1269 | ||
1270 | static void smc_eph_interrupt(struct net_device *dev) | |
1271 | { | |
1272 | struct smc_local *lp = netdev_priv(dev); | |
1273 | void __iomem *ioaddr = lp->base; | |
1274 | unsigned int ctl; | |
1275 | ||
1276 | smc_10bt_check_media(dev, 0); | |
1277 | ||
1278 | SMC_SELECT_BANK(1); | |
1279 | ctl = SMC_GET_CTL(); | |
1280 | SMC_SET_CTL(ctl & ~CTL_LE_ENABLE); | |
1281 | SMC_SET_CTL(ctl); | |
1282 | SMC_SELECT_BANK(2); | |
1283 | } | |
1284 | ||
1285 | /* | |
1286 | * This is the main routine of the driver, to handle the device when | |
1287 | * it needs some attention. | |
1288 | */ | |
7d12e780 | 1289 | static irqreturn_t smc_interrupt(int irq, void *dev_id) |
1da177e4 LT |
1290 | { |
1291 | struct net_device *dev = dev_id; | |
1292 | struct smc_local *lp = netdev_priv(dev); | |
1293 | void __iomem *ioaddr = lp->base; | |
1294 | int status, mask, timeout, card_stats; | |
1295 | int saved_pointer; | |
1296 | ||
1297 | DBG(3, "%s: %s\n", dev->name, __FUNCTION__); | |
1298 | ||
1299 | spin_lock(&lp->lock); | |
1300 | ||
1301 | /* A preamble may be used when there is a potential race | |
1302 | * between the interruptible transmit functions and this | |
1303 | * ISR. */ | |
1304 | SMC_INTERRUPT_PREAMBLE; | |
1305 | ||
1306 | saved_pointer = SMC_GET_PTR(); | |
1307 | mask = SMC_GET_INT_MASK(); | |
1308 | SMC_SET_INT_MASK(0); | |
1309 | ||
1310 | /* set a timeout value, so I don't stay here forever */ | |
5d0571d9 | 1311 | timeout = MAX_IRQ_LOOPS; |
1da177e4 LT |
1312 | |
1313 | do { | |
1314 | status = SMC_GET_INT(); | |
1315 | ||
1316 | DBG(2, "%s: INT 0x%02x MASK 0x%02x MEM 0x%04x FIFO 0x%04x\n", | |
1317 | dev->name, status, mask, | |
1318 | ({ int meminfo; SMC_SELECT_BANK(0); | |
1319 | meminfo = SMC_GET_MIR(); | |
1320 | SMC_SELECT_BANK(2); meminfo; }), | |
1321 | SMC_GET_FIFO()); | |
1322 | ||
1323 | status &= mask; | |
1324 | if (!status) | |
1325 | break; | |
1326 | ||
ea937560 NP |
1327 | if (status & IM_TX_INT) { |
1328 | /* do this before RX as it will free memory quickly */ | |
1da177e4 LT |
1329 | DBG(3, "%s: TX int\n", dev->name); |
1330 | smc_tx(dev); | |
1331 | SMC_ACK_INT(IM_TX_INT); | |
1332 | if (THROTTLE_TX_PKTS) | |
1333 | netif_wake_queue(dev); | |
ea937560 NP |
1334 | } else if (status & IM_RCV_INT) { |
1335 | DBG(3, "%s: RX irq\n", dev->name); | |
1336 | smc_rcv(dev); | |
1da177e4 LT |
1337 | } else if (status & IM_ALLOC_INT) { |
1338 | DBG(3, "%s: Allocation irq\n", dev->name); | |
1339 | tasklet_hi_schedule(&lp->tx_task); | |
1340 | mask &= ~IM_ALLOC_INT; | |
1341 | } else if (status & IM_TX_EMPTY_INT) { | |
1342 | DBG(3, "%s: TX empty\n", dev->name); | |
1343 | mask &= ~IM_TX_EMPTY_INT; | |
1344 | ||
1345 | /* update stats */ | |
1346 | SMC_SELECT_BANK(0); | |
1347 | card_stats = SMC_GET_COUNTER(); | |
1348 | SMC_SELECT_BANK(2); | |
1349 | ||
1350 | /* single collisions */ | |
1351 | lp->stats.collisions += card_stats & 0xF; | |
1352 | card_stats >>= 4; | |
1353 | ||
1354 | /* multiple collisions */ | |
1355 | lp->stats.collisions += card_stats & 0xF; | |
1356 | } else if (status & IM_RX_OVRN_INT) { | |
8de90115 NP |
1357 | DBG(1, "%s: RX overrun (EPH_ST 0x%04x)\n", dev->name, |
1358 | ({ int eph_st; SMC_SELECT_BANK(0); | |
1359 | eph_st = SMC_GET_EPH_STATUS(); | |
1360 | SMC_SELECT_BANK(2); eph_st; }) ); | |
1da177e4 LT |
1361 | SMC_ACK_INT(IM_RX_OVRN_INT); |
1362 | lp->stats.rx_errors++; | |
1363 | lp->stats.rx_fifo_errors++; | |
1364 | } else if (status & IM_EPH_INT) { | |
1365 | smc_eph_interrupt(dev); | |
1366 | } else if (status & IM_MDINT) { | |
1367 | SMC_ACK_INT(IM_MDINT); | |
1368 | smc_phy_interrupt(dev); | |
1369 | } else if (status & IM_ERCV_INT) { | |
1370 | SMC_ACK_INT(IM_ERCV_INT); | |
1371 | PRINTK("%s: UNSUPPORTED: ERCV INTERRUPT \n", dev->name); | |
1372 | } | |
1373 | } while (--timeout); | |
1374 | ||
1375 | /* restore register states */ | |
1376 | SMC_SET_PTR(saved_pointer); | |
1377 | SMC_SET_INT_MASK(mask); | |
1da177e4 LT |
1378 | spin_unlock(&lp->lock); |
1379 | ||
5d0571d9 NP |
1380 | if (timeout == MAX_IRQ_LOOPS) |
1381 | PRINTK("%s: spurious interrupt (mask = 0x%02x)\n", | |
1382 | dev->name, mask); | |
1383 | DBG(3, "%s: Interrupt done (%d loops)\n", | |
1384 | dev->name, MAX_IRQ_LOOPS - timeout); | |
1da177e4 LT |
1385 | |
1386 | /* | |
1387 | * We return IRQ_HANDLED unconditionally here even if there was | |
1388 | * nothing to do. There is a possibility that a packet might | |
1389 | * get enqueued into the chip right after TX_EMPTY_INT is raised | |
1390 | * but just before the CPU acknowledges the IRQ. | |
1391 | * Better take an unneeded IRQ in some occasions than complexifying | |
1392 | * the code for all cases. | |
1393 | */ | |
1394 | return IRQ_HANDLED; | |
1395 | } | |
1396 | ||
1397 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1398 | /* | |
1399 | * Polling receive - used by netconsole and other diagnostic tools | |
1400 | * to allow network i/o with interrupts disabled. | |
1401 | */ | |
1402 | static void smc_poll_controller(struct net_device *dev) | |
1403 | { | |
1404 | disable_irq(dev->irq); | |
9c8e7f5c | 1405 | smc_interrupt(dev->irq, dev); |
1da177e4 LT |
1406 | enable_irq(dev->irq); |
1407 | } | |
1408 | #endif | |
1409 | ||
1410 | /* Our watchdog timed out. Called by the networking layer */ | |
1411 | static void smc_timeout(struct net_device *dev) | |
1412 | { | |
1413 | struct smc_local *lp = netdev_priv(dev); | |
1414 | void __iomem *ioaddr = lp->base; | |
8de90115 | 1415 | int status, mask, eph_st, meminfo, fifo; |
1da177e4 LT |
1416 | |
1417 | DBG(2, "%s: %s\n", dev->name, __FUNCTION__); | |
1418 | ||
1419 | spin_lock_irq(&lp->lock); | |
1420 | status = SMC_GET_INT(); | |
1421 | mask = SMC_GET_INT_MASK(); | |
1422 | fifo = SMC_GET_FIFO(); | |
1423 | SMC_SELECT_BANK(0); | |
8de90115 | 1424 | eph_st = SMC_GET_EPH_STATUS(); |
1da177e4 LT |
1425 | meminfo = SMC_GET_MIR(); |
1426 | SMC_SELECT_BANK(2); | |
1427 | spin_unlock_irq(&lp->lock); | |
8de90115 NP |
1428 | PRINTK( "%s: TX timeout (INT 0x%02x INTMASK 0x%02x " |
1429 | "MEM 0x%04x FIFO 0x%04x EPH_ST 0x%04x)\n", | |
1430 | dev->name, status, mask, meminfo, fifo, eph_st ); | |
1da177e4 LT |
1431 | |
1432 | smc_reset(dev); | |
1433 | smc_enable(dev); | |
1434 | ||
1435 | /* | |
1436 | * Reconfiguring the PHY doesn't seem like a bad idea here, but | |
1437 | * smc_phy_configure() calls msleep() which calls schedule_timeout() | |
1438 | * which calls schedule(). Hence we use a work queue. | |
1439 | */ | |
1440 | if (lp->phy_type != 0) { | |
1441 | if (schedule_work(&lp->phy_configure)) { | |
1442 | lp->work_pending = 1; | |
1443 | } | |
1444 | } | |
1445 | ||
1446 | /* We can accept TX packets again */ | |
1447 | dev->trans_start = jiffies; | |
1448 | netif_wake_queue(dev); | |
1449 | } | |
1450 | ||
1451 | /* | |
1452 | * This routine will, depending on the values passed to it, | |
1453 | * either make it accept multicast packets, go into | |
1454 | * promiscuous mode (for TCPDUMP and cousins) or accept | |
1455 | * a select set of multicast packets | |
1456 | */ | |
1457 | static void smc_set_multicast_list(struct net_device *dev) | |
1458 | { | |
1459 | struct smc_local *lp = netdev_priv(dev); | |
1460 | void __iomem *ioaddr = lp->base; | |
1461 | unsigned char multicast_table[8]; | |
1462 | int update_multicast = 0; | |
1463 | ||
1464 | DBG(2, "%s: %s\n", dev->name, __FUNCTION__); | |
1465 | ||
1466 | if (dev->flags & IFF_PROMISC) { | |
1467 | DBG(2, "%s: RCR_PRMS\n", dev->name); | |
1468 | lp->rcr_cur_mode |= RCR_PRMS; | |
1469 | } | |
1470 | ||
1471 | /* BUG? I never disable promiscuous mode if multicasting was turned on. | |
1472 | Now, I turn off promiscuous mode, but I don't do anything to multicasting | |
1473 | when promiscuous mode is turned on. | |
1474 | */ | |
1475 | ||
1476 | /* | |
1477 | * Here, I am setting this to accept all multicast packets. | |
1478 | * I don't need to zero the multicast table, because the flag is | |
1479 | * checked before the table is | |
1480 | */ | |
1481 | else if (dev->flags & IFF_ALLMULTI || dev->mc_count > 16) { | |
1482 | DBG(2, "%s: RCR_ALMUL\n", dev->name); | |
1483 | lp->rcr_cur_mode |= RCR_ALMUL; | |
1484 | } | |
1485 | ||
1486 | /* | |
1487 | * This sets the internal hardware table to filter out unwanted | |
1488 | * multicast packets before they take up memory. | |
1489 | * | |
1490 | * The SMC chip uses a hash table where the high 6 bits of the CRC of | |
1491 | * address are the offset into the table. If that bit is 1, then the | |
1492 | * multicast packet is accepted. Otherwise, it's dropped silently. | |
1493 | * | |
1494 | * To use the 6 bits as an offset into the table, the high 3 bits are | |
1495 | * the number of the 8 bit register, while the low 3 bits are the bit | |
1496 | * within that register. | |
1497 | */ | |
1498 | else if (dev->mc_count) { | |
1499 | int i; | |
1500 | struct dev_mc_list *cur_addr; | |
1501 | ||
1502 | /* table for flipping the order of 3 bits */ | |
1503 | static const unsigned char invert3[] = {0, 4, 2, 6, 1, 5, 3, 7}; | |
1504 | ||
1505 | /* start with a table of all zeros: reject all */ | |
1506 | memset(multicast_table, 0, sizeof(multicast_table)); | |
1507 | ||
1508 | cur_addr = dev->mc_list; | |
1509 | for (i = 0; i < dev->mc_count; i++, cur_addr = cur_addr->next) { | |
1510 | int position; | |
1511 | ||
1512 | /* do we have a pointer here? */ | |
1513 | if (!cur_addr) | |
1514 | break; | |
1515 | /* make sure this is a multicast address - | |
1516 | shouldn't this be a given if we have it here ? */ | |
1517 | if (!(*cur_addr->dmi_addr & 1)) | |
1518 | continue; | |
1519 | ||
1520 | /* only use the low order bits */ | |
1521 | position = crc32_le(~0, cur_addr->dmi_addr, 6) & 0x3f; | |
1522 | ||
1523 | /* do some messy swapping to put the bit in the right spot */ | |
1524 | multicast_table[invert3[position&7]] |= | |
1525 | (1<<invert3[(position>>3)&7]); | |
1526 | } | |
1527 | ||
1528 | /* be sure I get rid of flags I might have set */ | |
1529 | lp->rcr_cur_mode &= ~(RCR_PRMS | RCR_ALMUL); | |
1530 | ||
1531 | /* now, the table can be loaded into the chipset */ | |
1532 | update_multicast = 1; | |
1533 | } else { | |
1534 | DBG(2, "%s: ~(RCR_PRMS|RCR_ALMUL)\n", dev->name); | |
1535 | lp->rcr_cur_mode &= ~(RCR_PRMS | RCR_ALMUL); | |
1536 | ||
1537 | /* | |
1538 | * since I'm disabling all multicast entirely, I need to | |
1539 | * clear the multicast list | |
1540 | */ | |
1541 | memset(multicast_table, 0, sizeof(multicast_table)); | |
1542 | update_multicast = 1; | |
1543 | } | |
1544 | ||
1545 | spin_lock_irq(&lp->lock); | |
1546 | SMC_SELECT_BANK(0); | |
1547 | SMC_SET_RCR(lp->rcr_cur_mode); | |
1548 | if (update_multicast) { | |
1549 | SMC_SELECT_BANK(3); | |
1550 | SMC_SET_MCAST(multicast_table); | |
1551 | } | |
1552 | SMC_SELECT_BANK(2); | |
1553 | spin_unlock_irq(&lp->lock); | |
1554 | } | |
1555 | ||
1556 | ||
1557 | /* | |
1558 | * Open and Initialize the board | |
1559 | * | |
1560 | * Set up everything, reset the card, etc.. | |
1561 | */ | |
1562 | static int | |
1563 | smc_open(struct net_device *dev) | |
1564 | { | |
1565 | struct smc_local *lp = netdev_priv(dev); | |
1566 | ||
1567 | DBG(2, "%s: %s\n", dev->name, __FUNCTION__); | |
1568 | ||
1569 | /* | |
1570 | * Check that the address is valid. If its not, refuse | |
1571 | * to bring the device up. The user must specify an | |
1572 | * address using ifconfig eth0 hw ether xx:xx:xx:xx:xx:xx | |
1573 | */ | |
1574 | if (!is_valid_ether_addr(dev->dev_addr)) { | |
1575 | PRINTK("%s: no valid ethernet hw addr\n", __FUNCTION__); | |
1576 | return -EINVAL; | |
1577 | } | |
1578 | ||
1579 | /* Setup the default Register Modes */ | |
1580 | lp->tcr_cur_mode = TCR_DEFAULT; | |
1581 | lp->rcr_cur_mode = RCR_DEFAULT; | |
1582 | lp->rpc_cur_mode = RPC_DEFAULT; | |
1583 | ||
1584 | /* | |
1585 | * If we are not using a MII interface, we need to | |
1586 | * monitor our own carrier signal to detect faults. | |
1587 | */ | |
1588 | if (lp->phy_type == 0) | |
1589 | lp->tcr_cur_mode |= TCR_MON_CSN; | |
1590 | ||
1591 | /* reset the hardware */ | |
1592 | smc_reset(dev); | |
1593 | smc_enable(dev); | |
1594 | ||
1595 | /* Configure the PHY, initialize the link state */ | |
1596 | if (lp->phy_type != 0) | |
6d5aefb8 | 1597 | smc_phy_configure(&lp->phy_configure); |
1da177e4 LT |
1598 | else { |
1599 | spin_lock_irq(&lp->lock); | |
1600 | smc_10bt_check_media(dev, 1); | |
1601 | spin_unlock_irq(&lp->lock); | |
1602 | } | |
1603 | ||
1604 | netif_start_queue(dev); | |
1605 | return 0; | |
1606 | } | |
1607 | ||
1608 | /* | |
1609 | * smc_close | |
1610 | * | |
1611 | * this makes the board clean up everything that it can | |
1612 | * and not talk to the outside world. Caused by | |
1613 | * an 'ifconfig ethX down' | |
1614 | */ | |
1615 | static int smc_close(struct net_device *dev) | |
1616 | { | |
1617 | struct smc_local *lp = netdev_priv(dev); | |
1618 | ||
1619 | DBG(2, "%s: %s\n", dev->name, __FUNCTION__); | |
1620 | ||
1621 | netif_stop_queue(dev); | |
1622 | netif_carrier_off(dev); | |
1623 | ||
1624 | /* clear everything */ | |
1625 | smc_shutdown(dev); | |
be83668a | 1626 | tasklet_kill(&lp->tx_task); |
1da177e4 | 1627 | smc_phy_powerdown(dev); |
1da177e4 LT |
1628 | return 0; |
1629 | } | |
1630 | ||
1631 | /* | |
1632 | * Get the current statistics. | |
1633 | * This may be called with the card open or closed. | |
1634 | */ | |
1635 | static struct net_device_stats *smc_query_statistics(struct net_device *dev) | |
1636 | { | |
1637 | struct smc_local *lp = netdev_priv(dev); | |
1638 | ||
1639 | DBG(2, "%s: %s\n", dev->name, __FUNCTION__); | |
1640 | ||
1641 | return &lp->stats; | |
1642 | } | |
1643 | ||
1644 | /* | |
1645 | * Ethtool support | |
1646 | */ | |
1647 | static int | |
1648 | smc_ethtool_getsettings(struct net_device *dev, struct ethtool_cmd *cmd) | |
1649 | { | |
1650 | struct smc_local *lp = netdev_priv(dev); | |
1651 | int ret; | |
1652 | ||
1653 | cmd->maxtxpkt = 1; | |
1654 | cmd->maxrxpkt = 1; | |
1655 | ||
1656 | if (lp->phy_type != 0) { | |
1657 | spin_lock_irq(&lp->lock); | |
1658 | ret = mii_ethtool_gset(&lp->mii, cmd); | |
1659 | spin_unlock_irq(&lp->lock); | |
1660 | } else { | |
1661 | cmd->supported = SUPPORTED_10baseT_Half | | |
1662 | SUPPORTED_10baseT_Full | | |
1663 | SUPPORTED_TP | SUPPORTED_AUI; | |
1664 | ||
1665 | if (lp->ctl_rspeed == 10) | |
1666 | cmd->speed = SPEED_10; | |
1667 | else if (lp->ctl_rspeed == 100) | |
1668 | cmd->speed = SPEED_100; | |
1669 | ||
1670 | cmd->autoneg = AUTONEG_DISABLE; | |
1671 | cmd->transceiver = XCVR_INTERNAL; | |
1672 | cmd->port = 0; | |
1673 | cmd->duplex = lp->tcr_cur_mode & TCR_SWFDUP ? DUPLEX_FULL : DUPLEX_HALF; | |
1674 | ||
1675 | ret = 0; | |
1676 | } | |
1677 | ||
1678 | return ret; | |
1679 | } | |
1680 | ||
1681 | static int | |
1682 | smc_ethtool_setsettings(struct net_device *dev, struct ethtool_cmd *cmd) | |
1683 | { | |
1684 | struct smc_local *lp = netdev_priv(dev); | |
1685 | int ret; | |
1686 | ||
1687 | if (lp->phy_type != 0) { | |
1688 | spin_lock_irq(&lp->lock); | |
1689 | ret = mii_ethtool_sset(&lp->mii, cmd); | |
1690 | spin_unlock_irq(&lp->lock); | |
1691 | } else { | |
1692 | if (cmd->autoneg != AUTONEG_DISABLE || | |
1693 | cmd->speed != SPEED_10 || | |
1694 | (cmd->duplex != DUPLEX_HALF && cmd->duplex != DUPLEX_FULL) || | |
1695 | (cmd->port != PORT_TP && cmd->port != PORT_AUI)) | |
1696 | return -EINVAL; | |
1697 | ||
1698 | // lp->port = cmd->port; | |
1699 | lp->ctl_rfduplx = cmd->duplex == DUPLEX_FULL; | |
1700 | ||
1701 | // if (netif_running(dev)) | |
1702 | // smc_set_port(dev); | |
1703 | ||
1704 | ret = 0; | |
1705 | } | |
1706 | ||
1707 | return ret; | |
1708 | } | |
1709 | ||
1710 | static void | |
1711 | smc_ethtool_getdrvinfo(struct net_device *dev, struct ethtool_drvinfo *info) | |
1712 | { | |
1713 | strncpy(info->driver, CARDNAME, sizeof(info->driver)); | |
1714 | strncpy(info->version, version, sizeof(info->version)); | |
43cb76d9 | 1715 | strncpy(info->bus_info, dev->dev.parent->bus_id, sizeof(info->bus_info)); |
1da177e4 LT |
1716 | } |
1717 | ||
1718 | static int smc_ethtool_nwayreset(struct net_device *dev) | |
1719 | { | |
1720 | struct smc_local *lp = netdev_priv(dev); | |
1721 | int ret = -EINVAL; | |
1722 | ||
1723 | if (lp->phy_type != 0) { | |
1724 | spin_lock_irq(&lp->lock); | |
1725 | ret = mii_nway_restart(&lp->mii); | |
1726 | spin_unlock_irq(&lp->lock); | |
1727 | } | |
1728 | ||
1729 | return ret; | |
1730 | } | |
1731 | ||
1732 | static u32 smc_ethtool_getmsglevel(struct net_device *dev) | |
1733 | { | |
1734 | struct smc_local *lp = netdev_priv(dev); | |
1735 | return lp->msg_enable; | |
1736 | } | |
1737 | ||
1738 | static void smc_ethtool_setmsglevel(struct net_device *dev, u32 level) | |
1739 | { | |
1740 | struct smc_local *lp = netdev_priv(dev); | |
1741 | lp->msg_enable = level; | |
1742 | } | |
1743 | ||
7282d491 | 1744 | static const struct ethtool_ops smc_ethtool_ops = { |
1da177e4 LT |
1745 | .get_settings = smc_ethtool_getsettings, |
1746 | .set_settings = smc_ethtool_setsettings, | |
1747 | .get_drvinfo = smc_ethtool_getdrvinfo, | |
1748 | ||
1749 | .get_msglevel = smc_ethtool_getmsglevel, | |
1750 | .set_msglevel = smc_ethtool_setmsglevel, | |
1751 | .nway_reset = smc_ethtool_nwayreset, | |
1752 | .get_link = ethtool_op_get_link, | |
1753 | // .get_eeprom = smc_ethtool_geteeprom, | |
1754 | // .set_eeprom = smc_ethtool_seteeprom, | |
1755 | }; | |
1756 | ||
1757 | /* | |
1758 | * smc_findirq | |
1759 | * | |
1760 | * This routine has a simple purpose -- make the SMC chip generate an | |
1761 | * interrupt, so an auto-detect routine can detect it, and find the IRQ, | |
1762 | */ | |
1763 | /* | |
1764 | * does this still work? | |
1765 | * | |
1766 | * I just deleted auto_irq.c, since it was never built... | |
1767 | * --jgarzik | |
1768 | */ | |
1769 | static int __init smc_findirq(void __iomem *ioaddr) | |
1770 | { | |
1771 | int timeout = 20; | |
1772 | unsigned long cookie; | |
1773 | ||
1774 | DBG(2, "%s: %s\n", CARDNAME, __FUNCTION__); | |
1775 | ||
1776 | cookie = probe_irq_on(); | |
1777 | ||
1778 | /* | |
1779 | * What I try to do here is trigger an ALLOC_INT. This is done | |
1780 | * by allocating a small chunk of memory, which will give an interrupt | |
1781 | * when done. | |
1782 | */ | |
1783 | /* enable ALLOCation interrupts ONLY */ | |
1784 | SMC_SELECT_BANK(2); | |
1785 | SMC_SET_INT_MASK(IM_ALLOC_INT); | |
1786 | ||
1787 | /* | |
1788 | * Allocate 512 bytes of memory. Note that the chip was just | |
1789 | * reset so all the memory is available | |
1790 | */ | |
1791 | SMC_SET_MMU_CMD(MC_ALLOC | 1); | |
1792 | ||
1793 | /* | |
1794 | * Wait until positive that the interrupt has been generated | |
1795 | */ | |
1796 | do { | |
1797 | int int_status; | |
1798 | udelay(10); | |
1799 | int_status = SMC_GET_INT(); | |
1800 | if (int_status & IM_ALLOC_INT) | |
1801 | break; /* got the interrupt */ | |
1802 | } while (--timeout); | |
1803 | ||
1804 | /* | |
1805 | * there is really nothing that I can do here if timeout fails, | |
1806 | * as autoirq_report will return a 0 anyway, which is what I | |
1807 | * want in this case. Plus, the clean up is needed in both | |
1808 | * cases. | |
1809 | */ | |
1810 | ||
1811 | /* and disable all interrupts again */ | |
1812 | SMC_SET_INT_MASK(0); | |
1813 | ||
1814 | /* and return what I found */ | |
1815 | return probe_irq_off(cookie); | |
1816 | } | |
1817 | ||
1818 | /* | |
1819 | * Function: smc_probe(unsigned long ioaddr) | |
1820 | * | |
1821 | * Purpose: | |
1822 | * Tests to see if a given ioaddr points to an SMC91x chip. | |
1823 | * Returns a 0 on success | |
1824 | * | |
1825 | * Algorithm: | |
1826 | * (1) see if the high byte of BANK_SELECT is 0x33 | |
1827 | * (2) compare the ioaddr with the base register's address | |
1828 | * (3) see if I recognize the chip ID in the appropriate register | |
1829 | * | |
1830 | * Here I do typical initialization tasks. | |
1831 | * | |
1832 | * o Initialize the structure if needed | |
1833 | * o print out my vanity message if not done so already | |
1834 | * o print out what type of hardware is detected | |
1835 | * o print out the ethernet address | |
1836 | * o find the IRQ | |
1837 | * o set up my private data | |
1838 | * o configure the dev structure with my subroutines | |
1839 | * o actually GRAB the irq. | |
1840 | * o GRAB the region | |
1841 | */ | |
1842 | static int __init smc_probe(struct net_device *dev, void __iomem *ioaddr) | |
1843 | { | |
1844 | struct smc_local *lp = netdev_priv(dev); | |
1845 | static int version_printed = 0; | |
1846 | int i, retval; | |
1847 | unsigned int val, revision_register; | |
1848 | const char *version_string; | |
1849 | ||
1850 | DBG(2, "%s: %s\n", CARDNAME, __FUNCTION__); | |
1851 | ||
1852 | /* First, see if the high byte is 0x33 */ | |
1853 | val = SMC_CURRENT_BANK(); | |
1854 | DBG(2, "%s: bank signature probe returned 0x%04x\n", CARDNAME, val); | |
1855 | if ((val & 0xFF00) != 0x3300) { | |
1856 | if ((val & 0xFF) == 0x33) { | |
1857 | printk(KERN_WARNING | |
1858 | "%s: Detected possible byte-swapped interface" | |
1859 | " at IOADDR %p\n", CARDNAME, ioaddr); | |
1860 | } | |
1861 | retval = -ENODEV; | |
1862 | goto err_out; | |
1863 | } | |
1864 | ||
1865 | /* | |
1866 | * The above MIGHT indicate a device, but I need to write to | |
1867 | * further test this. | |
1868 | */ | |
1869 | SMC_SELECT_BANK(0); | |
1870 | val = SMC_CURRENT_BANK(); | |
1871 | if ((val & 0xFF00) != 0x3300) { | |
1872 | retval = -ENODEV; | |
1873 | goto err_out; | |
1874 | } | |
1875 | ||
1876 | /* | |
1877 | * well, we've already written once, so hopefully another | |
1878 | * time won't hurt. This time, I need to switch the bank | |
1879 | * register to bank 1, so I can access the base address | |
1880 | * register | |
1881 | */ | |
1882 | SMC_SELECT_BANK(1); | |
1883 | val = SMC_GET_BASE(); | |
1884 | val = ((val & 0x1F00) >> 3) << SMC_IO_SHIFT; | |
53155109 | 1885 | if (((unsigned int)ioaddr & (0x3e0 << SMC_IO_SHIFT)) != val) { |
1da177e4 LT |
1886 | printk("%s: IOADDR %p doesn't match configuration (%x).\n", |
1887 | CARDNAME, ioaddr, val); | |
1888 | } | |
1889 | ||
1890 | /* | |
1891 | * check if the revision register is something that I | |
1892 | * recognize. These might need to be added to later, | |
1893 | * as future revisions could be added. | |
1894 | */ | |
1895 | SMC_SELECT_BANK(3); | |
1896 | revision_register = SMC_GET_REV(); | |
1897 | DBG(2, "%s: revision = 0x%04x\n", CARDNAME, revision_register); | |
1898 | version_string = chip_ids[ (revision_register >> 4) & 0xF]; | |
1899 | if (!version_string || (revision_register & 0xff00) != 0x3300) { | |
1900 | /* I don't recognize this chip, so... */ | |
1901 | printk("%s: IO %p: Unrecognized revision register 0x%04x" | |
1902 | ", Contact author.\n", CARDNAME, | |
1903 | ioaddr, revision_register); | |
1904 | ||
1905 | retval = -ENODEV; | |
1906 | goto err_out; | |
1907 | } | |
1908 | ||
1909 | /* At this point I'll assume that the chip is an SMC91x. */ | |
1910 | if (version_printed++ == 0) | |
1911 | printk("%s", version); | |
1912 | ||
1913 | /* fill in some of the fields */ | |
1914 | dev->base_addr = (unsigned long)ioaddr; | |
1915 | lp->base = ioaddr; | |
1916 | lp->version = revision_register & 0xff; | |
1917 | spin_lock_init(&lp->lock); | |
1918 | ||
1919 | /* Get the MAC address */ | |
1920 | SMC_SELECT_BANK(1); | |
1921 | SMC_GET_MAC_ADDR(dev->dev_addr); | |
1922 | ||
1923 | /* now, reset the chip, and put it into a known state */ | |
1924 | smc_reset(dev); | |
1925 | ||
1926 | /* | |
1927 | * If dev->irq is 0, then the device has to be banged on to see | |
1928 | * what the IRQ is. | |
1929 | * | |
1930 | * This banging doesn't always detect the IRQ, for unknown reasons. | |
1931 | * a workaround is to reset the chip and try again. | |
1932 | * | |
1933 | * Interestingly, the DOS packet driver *SETS* the IRQ on the card to | |
1934 | * be what is requested on the command line. I don't do that, mostly | |
1935 | * because the card that I have uses a non-standard method of accessing | |
1936 | * the IRQs, and because this _should_ work in most configurations. | |
1937 | * | |
1938 | * Specifying an IRQ is done with the assumption that the user knows | |
1939 | * what (s)he is doing. No checking is done!!!! | |
1940 | */ | |
1941 | if (dev->irq < 1) { | |
1942 | int trials; | |
1943 | ||
1944 | trials = 3; | |
1945 | while (trials--) { | |
1946 | dev->irq = smc_findirq(ioaddr); | |
1947 | if (dev->irq) | |
1948 | break; | |
1949 | /* kick the card and try again */ | |
1950 | smc_reset(dev); | |
1951 | } | |
1952 | } | |
1953 | if (dev->irq == 0) { | |
1954 | printk("%s: Couldn't autodetect your IRQ. Use irq=xx.\n", | |
1955 | dev->name); | |
1956 | retval = -ENODEV; | |
1957 | goto err_out; | |
1958 | } | |
1959 | dev->irq = irq_canonicalize(dev->irq); | |
1960 | ||
1961 | /* Fill in the fields of the device structure with ethernet values. */ | |
1962 | ether_setup(dev); | |
1963 | ||
1964 | dev->open = smc_open; | |
1965 | dev->stop = smc_close; | |
1966 | dev->hard_start_xmit = smc_hard_start_xmit; | |
1967 | dev->tx_timeout = smc_timeout; | |
1968 | dev->watchdog_timeo = msecs_to_jiffies(watchdog); | |
1969 | dev->get_stats = smc_query_statistics; | |
1970 | dev->set_multicast_list = smc_set_multicast_list; | |
1971 | dev->ethtool_ops = &smc_ethtool_ops; | |
1972 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1973 | dev->poll_controller = smc_poll_controller; | |
1974 | #endif | |
1975 | ||
1976 | tasklet_init(&lp->tx_task, smc_hardware_send_pkt, (unsigned long)dev); | |
6d5aefb8 DH |
1977 | INIT_WORK(&lp->phy_configure, smc_phy_configure); |
1978 | lp->dev = dev; | |
1da177e4 LT |
1979 | lp->mii.phy_id_mask = 0x1f; |
1980 | lp->mii.reg_num_mask = 0x1f; | |
1981 | lp->mii.force_media = 0; | |
1982 | lp->mii.full_duplex = 0; | |
1983 | lp->mii.dev = dev; | |
1984 | lp->mii.mdio_read = smc_phy_read; | |
1985 | lp->mii.mdio_write = smc_phy_write; | |
1986 | ||
1987 | /* | |
1988 | * Locate the phy, if any. | |
1989 | */ | |
1990 | if (lp->version >= (CHIP_91100 << 4)) | |
1991 | smc_phy_detect(dev); | |
1992 | ||
99e1baf8 NP |
1993 | /* then shut everything down to save power */ |
1994 | smc_shutdown(dev); | |
1995 | smc_phy_powerdown(dev); | |
1996 | ||
1da177e4 LT |
1997 | /* Set default parameters */ |
1998 | lp->msg_enable = NETIF_MSG_LINK; | |
1999 | lp->ctl_rfduplx = 0; | |
2000 | lp->ctl_rspeed = 10; | |
2001 | ||
2002 | if (lp->version >= (CHIP_91100 << 4)) { | |
2003 | lp->ctl_rfduplx = 1; | |
2004 | lp->ctl_rspeed = 100; | |
2005 | } | |
2006 | ||
2007 | /* Grab the IRQ */ | |
9ded96f2 | 2008 | retval = request_irq(dev->irq, &smc_interrupt, SMC_IRQ_FLAGS, dev->name, dev); |
1da177e4 LT |
2009 | if (retval) |
2010 | goto err_out; | |
2011 | ||
1da177e4 LT |
2012 | #ifdef SMC_USE_PXA_DMA |
2013 | { | |
2014 | int dma = pxa_request_dma(dev->name, DMA_PRIO_LOW, | |
2015 | smc_pxa_dma_irq, NULL); | |
2016 | if (dma >= 0) | |
2017 | dev->dma = dma; | |
2018 | } | |
2019 | #endif | |
2020 | ||
2021 | retval = register_netdev(dev); | |
2022 | if (retval == 0) { | |
2023 | /* now, print out the card info, in a short format.. */ | |
2024 | printk("%s: %s (rev %d) at %p IRQ %d", | |
2025 | dev->name, version_string, revision_register & 0x0f, | |
2026 | lp->base, dev->irq); | |
2027 | ||
2028 | if (dev->dma != (unsigned char)-1) | |
2029 | printk(" DMA %d", dev->dma); | |
2030 | ||
2031 | printk("%s%s\n", nowait ? " [nowait]" : "", | |
2032 | THROTTLE_TX_PKTS ? " [throttle_tx]" : ""); | |
2033 | ||
2034 | if (!is_valid_ether_addr(dev->dev_addr)) { | |
2035 | printk("%s: Invalid ethernet MAC address. Please " | |
2036 | "set using ifconfig\n", dev->name); | |
2037 | } else { | |
2038 | /* Print the Ethernet address */ | |
2039 | printk("%s: Ethernet addr: ", dev->name); | |
2040 | for (i = 0; i < 5; i++) | |
2041 | printk("%2.2x:", dev->dev_addr[i]); | |
2042 | printk("%2.2x\n", dev->dev_addr[5]); | |
2043 | } | |
2044 | ||
2045 | if (lp->phy_type == 0) { | |
2046 | PRINTK("%s: No PHY found\n", dev->name); | |
2047 | } else if ((lp->phy_type & 0xfffffff0) == 0x0016f840) { | |
2048 | PRINTK("%s: PHY LAN83C183 (LAN91C111 Internal)\n", dev->name); | |
2049 | } else if ((lp->phy_type & 0xfffffff0) == 0x02821c50) { | |
2050 | PRINTK("%s: PHY LAN83C180\n", dev->name); | |
2051 | } | |
2052 | } | |
2053 | ||
2054 | err_out: | |
2055 | #ifdef SMC_USE_PXA_DMA | |
2056 | if (retval && dev->dma != (unsigned char)-1) | |
2057 | pxa_free_dma(dev->dma); | |
2058 | #endif | |
2059 | return retval; | |
2060 | } | |
2061 | ||
2062 | static int smc_enable_device(struct platform_device *pdev) | |
2063 | { | |
2064 | unsigned long flags; | |
2065 | unsigned char ecor, ecsr; | |
2066 | void __iomem *addr; | |
2067 | struct resource * res; | |
2068 | ||
2069 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-attrib"); | |
2070 | if (!res) | |
2071 | return 0; | |
2072 | ||
2073 | /* | |
2074 | * Map the attribute space. This is overkill, but clean. | |
2075 | */ | |
2076 | addr = ioremap(res->start, ATTRIB_SIZE); | |
2077 | if (!addr) | |
2078 | return -ENOMEM; | |
2079 | ||
2080 | /* | |
2081 | * Reset the device. We must disable IRQs around this | |
2082 | * since a reset causes the IRQ line become active. | |
2083 | */ | |
2084 | local_irq_save(flags); | |
2085 | ecor = readb(addr + (ECOR << SMC_IO_SHIFT)) & ~ECOR_RESET; | |
2086 | writeb(ecor | ECOR_RESET, addr + (ECOR << SMC_IO_SHIFT)); | |
2087 | readb(addr + (ECOR << SMC_IO_SHIFT)); | |
2088 | ||
2089 | /* | |
2090 | * Wait 100us for the chip to reset. | |
2091 | */ | |
2092 | udelay(100); | |
2093 | ||
2094 | /* | |
2095 | * The device will ignore all writes to the enable bit while | |
2096 | * reset is asserted, even if the reset bit is cleared in the | |
2097 | * same write. Must clear reset first, then enable the device. | |
2098 | */ | |
2099 | writeb(ecor, addr + (ECOR << SMC_IO_SHIFT)); | |
2100 | writeb(ecor | ECOR_ENABLE, addr + (ECOR << SMC_IO_SHIFT)); | |
2101 | ||
2102 | /* | |
2103 | * Set the appropriate byte/word mode. | |
2104 | */ | |
2105 | ecsr = readb(addr + (ECSR << SMC_IO_SHIFT)) & ~ECSR_IOIS8; | |
09779c6d NP |
2106 | if (!SMC_CAN_USE_16BIT) |
2107 | ecsr |= ECSR_IOIS8; | |
1da177e4 LT |
2108 | writeb(ecsr, addr + (ECSR << SMC_IO_SHIFT)); |
2109 | local_irq_restore(flags); | |
2110 | ||
2111 | iounmap(addr); | |
2112 | ||
2113 | /* | |
2114 | * Wait for the chip to wake up. We could poll the control | |
2115 | * register in the main register space, but that isn't mapped | |
2116 | * yet. We know this is going to take 750us. | |
2117 | */ | |
2118 | msleep(1); | |
2119 | ||
2120 | return 0; | |
2121 | } | |
2122 | ||
2123 | static int smc_request_attrib(struct platform_device *pdev) | |
2124 | { | |
2125 | struct resource * res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-attrib"); | |
2126 | ||
2127 | if (!res) | |
2128 | return 0; | |
2129 | ||
2130 | if (!request_mem_region(res->start, ATTRIB_SIZE, CARDNAME)) | |
2131 | return -EBUSY; | |
2132 | ||
2133 | return 0; | |
2134 | } | |
2135 | ||
2136 | static void smc_release_attrib(struct platform_device *pdev) | |
2137 | { | |
2138 | struct resource * res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-attrib"); | |
2139 | ||
2140 | if (res) | |
2141 | release_mem_region(res->start, ATTRIB_SIZE); | |
2142 | } | |
2143 | ||
09779c6d | 2144 | static inline void smc_request_datacs(struct platform_device *pdev, struct net_device *ndev) |
1da177e4 | 2145 | { |
09779c6d NP |
2146 | if (SMC_CAN_USE_DATACS) { |
2147 | struct resource * res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-data32"); | |
2148 | struct smc_local *lp = netdev_priv(ndev); | |
1da177e4 | 2149 | |
09779c6d NP |
2150 | if (!res) |
2151 | return; | |
1da177e4 | 2152 | |
09779c6d NP |
2153 | if(!request_mem_region(res->start, SMC_DATA_EXTENT, CARDNAME)) { |
2154 | printk(KERN_INFO "%s: failed to request datacs memory region.\n", CARDNAME); | |
2155 | return; | |
2156 | } | |
1da177e4 | 2157 | |
09779c6d NP |
2158 | lp->datacs = ioremap(res->start, SMC_DATA_EXTENT); |
2159 | } | |
1da177e4 LT |
2160 | } |
2161 | ||
2162 | static void smc_release_datacs(struct platform_device *pdev, struct net_device *ndev) | |
2163 | { | |
09779c6d NP |
2164 | if (SMC_CAN_USE_DATACS) { |
2165 | struct smc_local *lp = netdev_priv(ndev); | |
2166 | struct resource * res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-data32"); | |
1da177e4 | 2167 | |
09779c6d NP |
2168 | if (lp->datacs) |
2169 | iounmap(lp->datacs); | |
1da177e4 | 2170 | |
09779c6d | 2171 | lp->datacs = NULL; |
1da177e4 | 2172 | |
09779c6d NP |
2173 | if (res) |
2174 | release_mem_region(res->start, SMC_DATA_EXTENT); | |
2175 | } | |
1da177e4 | 2176 | } |
1da177e4 LT |
2177 | |
2178 | /* | |
2179 | * smc_init(void) | |
2180 | * Input parameters: | |
2181 | * dev->base_addr == 0, try to find all possible locations | |
2182 | * dev->base_addr > 0x1ff, this is the address to check | |
2183 | * dev->base_addr == <anything else>, return failure code | |
2184 | * | |
2185 | * Output: | |
2186 | * 0 --> there is a device | |
2187 | * anything else, error | |
2188 | */ | |
3ae5eaec | 2189 | static int smc_drv_probe(struct platform_device *pdev) |
1da177e4 | 2190 | { |
1da177e4 LT |
2191 | struct net_device *ndev; |
2192 | struct resource *res; | |
2193 | unsigned int __iomem *addr; | |
2194 | int ret; | |
2195 | ||
2196 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-regs"); | |
2197 | if (!res) | |
2198 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
2199 | if (!res) { | |
2200 | ret = -ENODEV; | |
2201 | goto out; | |
2202 | } | |
2203 | ||
2204 | ||
2205 | if (!request_mem_region(res->start, SMC_IO_EXTENT, CARDNAME)) { | |
2206 | ret = -EBUSY; | |
2207 | goto out; | |
2208 | } | |
2209 | ||
2210 | ndev = alloc_etherdev(sizeof(struct smc_local)); | |
2211 | if (!ndev) { | |
2212 | printk("%s: could not allocate device.\n", CARDNAME); | |
2213 | ret = -ENOMEM; | |
2214 | goto out_release_io; | |
2215 | } | |
2216 | SET_MODULE_OWNER(ndev); | |
3ae5eaec | 2217 | SET_NETDEV_DEV(ndev, &pdev->dev); |
1da177e4 LT |
2218 | |
2219 | ndev->dma = (unsigned char)-1; | |
2220 | ndev->irq = platform_get_irq(pdev, 0); | |
48944738 DV |
2221 | if (ndev->irq < 0) { |
2222 | ret = -ENODEV; | |
2223 | goto out_free_netdev; | |
2224 | } | |
1da177e4 LT |
2225 | |
2226 | ret = smc_request_attrib(pdev); | |
2227 | if (ret) | |
2228 | goto out_free_netdev; | |
2229 | #if defined(CONFIG_SA1100_ASSABET) | |
2230 | NCR_0 |= NCR_ENET_OSC_EN; | |
2231 | #endif | |
2232 | ret = smc_enable_device(pdev); | |
2233 | if (ret) | |
2234 | goto out_release_attrib; | |
2235 | ||
2236 | addr = ioremap(res->start, SMC_IO_EXTENT); | |
2237 | if (!addr) { | |
2238 | ret = -ENOMEM; | |
2239 | goto out_release_attrib; | |
2240 | } | |
2241 | ||
3ae5eaec | 2242 | platform_set_drvdata(pdev, ndev); |
1da177e4 LT |
2243 | ret = smc_probe(ndev, addr); |
2244 | if (ret != 0) | |
2245 | goto out_iounmap; | |
2246 | #ifdef SMC_USE_PXA_DMA | |
2247 | else { | |
2248 | struct smc_local *lp = netdev_priv(ndev); | |
2249 | lp->physaddr = res->start; | |
2250 | } | |
2251 | #endif | |
2252 | ||
2253 | smc_request_datacs(pdev, ndev); | |
2254 | ||
2255 | return 0; | |
2256 | ||
2257 | out_iounmap: | |
3ae5eaec | 2258 | platform_set_drvdata(pdev, NULL); |
1da177e4 LT |
2259 | iounmap(addr); |
2260 | out_release_attrib: | |
2261 | smc_release_attrib(pdev); | |
2262 | out_free_netdev: | |
2263 | free_netdev(ndev); | |
2264 | out_release_io: | |
2265 | release_mem_region(res->start, SMC_IO_EXTENT); | |
2266 | out: | |
2267 | printk("%s: not found (%d).\n", CARDNAME, ret); | |
2268 | ||
2269 | return ret; | |
2270 | } | |
2271 | ||
3ae5eaec | 2272 | static int smc_drv_remove(struct platform_device *pdev) |
1da177e4 | 2273 | { |
3ae5eaec | 2274 | struct net_device *ndev = platform_get_drvdata(pdev); |
1da177e4 LT |
2275 | struct smc_local *lp = netdev_priv(ndev); |
2276 | struct resource *res; | |
2277 | ||
3ae5eaec | 2278 | platform_set_drvdata(pdev, NULL); |
1da177e4 LT |
2279 | |
2280 | unregister_netdev(ndev); | |
2281 | ||
2282 | free_irq(ndev->irq, ndev); | |
2283 | ||
2284 | #ifdef SMC_USE_PXA_DMA | |
2285 | if (ndev->dma != (unsigned char)-1) | |
2286 | pxa_free_dma(ndev->dma); | |
2287 | #endif | |
2288 | iounmap(lp->base); | |
2289 | ||
2290 | smc_release_datacs(pdev,ndev); | |
2291 | smc_release_attrib(pdev); | |
2292 | ||
2293 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-regs"); | |
2294 | if (!res) | |
2295 | platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
2296 | release_mem_region(res->start, SMC_IO_EXTENT); | |
2297 | ||
2298 | free_netdev(ndev); | |
2299 | ||
2300 | return 0; | |
2301 | } | |
2302 | ||
3ae5eaec | 2303 | static int smc_drv_suspend(struct platform_device *dev, pm_message_t state) |
1da177e4 | 2304 | { |
3ae5eaec | 2305 | struct net_device *ndev = platform_get_drvdata(dev); |
1da177e4 | 2306 | |
9480e307 | 2307 | if (ndev) { |
1da177e4 LT |
2308 | if (netif_running(ndev)) { |
2309 | netif_device_detach(ndev); | |
2310 | smc_shutdown(ndev); | |
2311 | smc_phy_powerdown(ndev); | |
2312 | } | |
2313 | } | |
2314 | return 0; | |
2315 | } | |
2316 | ||
3ae5eaec | 2317 | static int smc_drv_resume(struct platform_device *dev) |
1da177e4 | 2318 | { |
3ae5eaec | 2319 | struct net_device *ndev = platform_get_drvdata(dev); |
1da177e4 | 2320 | |
9480e307 | 2321 | if (ndev) { |
1da177e4 | 2322 | struct smc_local *lp = netdev_priv(ndev); |
3ae5eaec | 2323 | smc_enable_device(dev); |
1da177e4 LT |
2324 | if (netif_running(ndev)) { |
2325 | smc_reset(ndev); | |
2326 | smc_enable(ndev); | |
2327 | if (lp->phy_type != 0) | |
6d5aefb8 | 2328 | smc_phy_configure(&lp->phy_configure); |
1da177e4 LT |
2329 | netif_device_attach(ndev); |
2330 | } | |
2331 | } | |
2332 | return 0; | |
2333 | } | |
2334 | ||
3ae5eaec | 2335 | static struct platform_driver smc_driver = { |
1da177e4 LT |
2336 | .probe = smc_drv_probe, |
2337 | .remove = smc_drv_remove, | |
2338 | .suspend = smc_drv_suspend, | |
2339 | .resume = smc_drv_resume, | |
3ae5eaec RK |
2340 | .driver = { |
2341 | .name = CARDNAME, | |
2342 | }, | |
1da177e4 LT |
2343 | }; |
2344 | ||
2345 | static int __init smc_init(void) | |
2346 | { | |
2347 | #ifdef MODULE | |
2348 | #ifdef CONFIG_ISA | |
2349 | if (io == -1) | |
6aa20a22 | 2350 | printk(KERN_WARNING |
1da177e4 LT |
2351 | "%s: You shouldn't use auto-probing with insmod!\n", |
2352 | CARDNAME); | |
2353 | #endif | |
2354 | #endif | |
2355 | ||
3ae5eaec | 2356 | return platform_driver_register(&smc_driver); |
1da177e4 LT |
2357 | } |
2358 | ||
2359 | static void __exit smc_cleanup(void) | |
2360 | { | |
3ae5eaec | 2361 | platform_driver_unregister(&smc_driver); |
1da177e4 LT |
2362 | } |
2363 | ||
2364 | module_init(smc_init); | |
2365 | module_exit(smc_cleanup); |