Commit | Line | Data |
---|---|---|
27590d06 HS |
1 | /* |
2 | ||
3 | Driver for the Marvell 8385 based compact flash WLAN cards. | |
4 | ||
5 | (C) 2007 by Holger Schurig <hs4233@mail.mn-solutions.de> | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; see the file COPYING. If not, write to | |
19 | the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor, | |
20 | Boston, MA 02110-1301, USA. | |
21 | ||
22 | */ | |
23 | ||
24 | #include <linux/module.h> | |
25 | #include <linux/delay.h> | |
26 | #include <linux/moduleparam.h> | |
27 | #include <linux/firmware.h> | |
28 | #include <linux/netdevice.h> | |
29 | ||
30 | #include <pcmcia/cs_types.h> | |
31 | #include <pcmcia/cs.h> | |
32 | #include <pcmcia/cistpl.h> | |
33 | #include <pcmcia/ds.h> | |
34 | ||
35 | #include <linux/io.h> | |
36 | ||
37 | #define DRV_NAME "libertas_cs" | |
38 | ||
39 | #include "decl.h" | |
40 | #include "defs.h" | |
41 | #include "dev.h" | |
42 | ||
43 | ||
44 | /********************************************************************/ | |
45 | /* Module stuff */ | |
46 | /********************************************************************/ | |
47 | ||
48 | MODULE_AUTHOR("Holger Schurig <hs4233@mail.mn-solutions.de>"); | |
49 | MODULE_DESCRIPTION("Driver for Marvell 83xx compact flash WLAN cards"); | |
50 | MODULE_LICENSE("GPL"); | |
51 | ||
52 | ||
53 | ||
54 | /********************************************************************/ | |
55 | /* Data structures */ | |
56 | /********************************************************************/ | |
57 | ||
58 | struct if_cs_card { | |
59 | struct pcmcia_device *p_dev; | |
60 | wlan_private *priv; | |
61 | void __iomem *iobase; | |
62 | }; | |
63 | ||
64 | ||
65 | ||
66 | /********************************************************************/ | |
67 | /* Hardware access */ | |
68 | /********************************************************************/ | |
69 | ||
70 | /* This define enables wrapper functions which allow you | |
71 | to dump all register accesses. You normally won't this, | |
72 | except for development */ | |
73 | /* #define DEBUG_IO */ | |
74 | ||
75 | #ifdef DEBUG_IO | |
76 | static int debug_output = 0; | |
77 | #else | |
78 | /* This way the compiler optimizes the printk's away */ | |
79 | #define debug_output 0 | |
80 | #endif | |
81 | ||
82 | static inline unsigned int if_cs_read8(struct if_cs_card *card, uint reg) | |
83 | { | |
84 | unsigned int val = ioread8(card->iobase + reg); | |
85 | if (debug_output) | |
86 | printk(KERN_INFO "##inb %08x<%02x\n", reg, val); | |
87 | return val; | |
88 | } | |
89 | static inline unsigned int if_cs_read16(struct if_cs_card *card, uint reg) | |
90 | { | |
91 | unsigned int val = ioread16(card->iobase + reg); | |
92 | if (debug_output) | |
93 | printk(KERN_INFO "##inw %08x<%04x\n", reg, val); | |
94 | return val; | |
95 | } | |
96 | static inline void if_cs_read16_rep( | |
97 | struct if_cs_card *card, | |
98 | uint reg, | |
99 | void *buf, | |
100 | unsigned long count) | |
101 | { | |
102 | if (debug_output) | |
103 | printk(KERN_INFO "##insw %08x<(0x%lx words)\n", | |
104 | reg, count); | |
105 | ioread16_rep(card->iobase + reg, buf, count); | |
106 | } | |
107 | ||
108 | static inline void if_cs_write8(struct if_cs_card *card, uint reg, u8 val) | |
109 | { | |
110 | if (debug_output) | |
111 | printk(KERN_INFO "##outb %08x>%02x\n", reg, val); | |
112 | iowrite8(val, card->iobase + reg); | |
113 | } | |
114 | ||
115 | static inline void if_cs_write16(struct if_cs_card *card, uint reg, u16 val) | |
116 | { | |
117 | if (debug_output) | |
118 | printk(KERN_INFO "##outw %08x>%04x\n", reg, val); | |
119 | iowrite16(val, card->iobase + reg); | |
120 | } | |
121 | ||
122 | static inline void if_cs_write16_rep( | |
123 | struct if_cs_card *card, | |
124 | uint reg, | |
125 | void *buf, | |
126 | unsigned long count) | |
127 | { | |
128 | if (debug_output) | |
129 | printk(KERN_INFO "##outsw %08x>(0x%lx words)\n", | |
130 | reg, count); | |
131 | iowrite16_rep(card->iobase + reg, buf, count); | |
132 | } | |
133 | ||
134 | ||
135 | /* | |
136 | * I know that polling/delaying is frowned upon. However, this procedure | |
137 | * with polling is needed while downloading the firmware. At this stage, | |
138 | * the hardware does unfortunately not create any interrupts. | |
139 | * | |
140 | * Fortunately, this function is never used once the firmware is in | |
141 | * the card. :-) | |
142 | * | |
143 | * As a reference, see the "Firmware Specification v5.1", page 18 | |
144 | * and 19. I did not follow their suggested timing to the word, | |
145 | * but this works nice & fast anyway. | |
146 | */ | |
147 | static int if_cs_poll_while_fw_download(struct if_cs_card *card, uint addr, u8 reg) | |
148 | { | |
149 | int i; | |
150 | ||
151 | for (i = 0; i < 500; i++) { | |
152 | u8 val = if_cs_read8(card, addr); | |
153 | if (val == reg) | |
154 | return i; | |
155 | udelay(100); | |
156 | } | |
157 | return -ETIME; | |
158 | } | |
159 | ||
160 | ||
161 | ||
162 | /* Host control registers and their bit definitions */ | |
163 | ||
164 | #define IF_CS_H_STATUS 0x00000000 | |
165 | #define IF_CS_H_STATUS_TX_OVER 0x0001 | |
166 | #define IF_CS_H_STATUS_RX_OVER 0x0002 | |
167 | #define IF_CS_H_STATUS_DNLD_OVER 0x0004 | |
168 | ||
169 | #define IF_CS_H_INT_CAUSE 0x00000002 | |
170 | #define IF_CS_H_IC_TX_OVER 0x0001 | |
171 | #define IF_CS_H_IC_RX_OVER 0x0002 | |
172 | #define IF_CS_H_IC_DNLD_OVER 0x0004 | |
173 | #define IF_CS_H_IC_HOST_EVENT 0x0008 | |
174 | #define IF_CS_H_IC_MASK 0x001f | |
175 | ||
176 | #define IF_CS_H_INT_MASK 0x00000004 | |
177 | #define IF_CS_H_IM_MASK 0x001f | |
178 | ||
179 | #define IF_CS_H_WRITE_LEN 0x00000014 | |
180 | ||
181 | #define IF_CS_H_WRITE 0x00000016 | |
182 | ||
183 | #define IF_CS_H_CMD_LEN 0x00000018 | |
184 | ||
185 | #define IF_CS_H_CMD 0x0000001A | |
186 | ||
187 | #define IF_CS_C_READ_LEN 0x00000024 | |
188 | ||
189 | #define IF_CS_H_READ 0x00000010 | |
190 | ||
191 | /* Card control registers and their bit definitions */ | |
192 | ||
193 | #define IF_CS_C_STATUS 0x00000020 | |
194 | #define IF_CS_C_S_TX_DNLD_RDY 0x0001 | |
195 | #define IF_CS_C_S_RX_UPLD_RDY 0x0002 | |
196 | #define IF_CS_C_S_CMD_DNLD_RDY 0x0004 | |
197 | #define IF_CS_C_S_CMD_UPLD_RDY 0x0008 | |
198 | #define IF_CS_C_S_CARDEVENT 0x0010 | |
199 | #define IF_CS_C_S_MASK 0x001f | |
200 | #define IF_CS_C_S_STATUS_MASK 0x7f00 | |
201 | /* The following definitions should be the same as the MRVDRV_ ones */ | |
202 | ||
203 | #if MRVDRV_CMD_DNLD_RDY != IF_CS_C_S_CMD_DNLD_RDY | |
204 | #error MRVDRV_CMD_DNLD_RDY and IF_CS_C_S_CMD_DNLD_RDY not in sync | |
205 | #endif | |
206 | #if MRVDRV_CMD_UPLD_RDY != IF_CS_C_S_CMD_UPLD_RDY | |
207 | #error MRVDRV_CMD_UPLD_RDY and IF_CS_C_S_CMD_UPLD_RDY not in sync | |
208 | #endif | |
209 | #if MRVDRV_CARDEVENT != IF_CS_C_S_CARDEVENT | |
210 | #error MRVDRV_CARDEVENT and IF_CS_C_S_CARDEVENT not in sync | |
211 | #endif | |
212 | ||
213 | #define IF_CS_C_INT_CAUSE 0x00000022 | |
214 | #define IF_CS_C_IC_MASK 0x001f | |
215 | ||
216 | #define IF_CS_C_SQ_READ_LOW 0x00000028 | |
217 | #define IF_CS_C_SQ_HELPER_OK 0x10 | |
218 | ||
219 | #define IF_CS_C_CMD_LEN 0x00000030 | |
220 | ||
221 | #define IF_CS_C_CMD 0x00000012 | |
222 | ||
223 | #define IF_CS_SCRATCH 0x0000003F | |
224 | ||
225 | ||
226 | ||
227 | /********************************************************************/ | |
228 | /* Interrupts */ | |
229 | /********************************************************************/ | |
230 | ||
231 | static inline void if_cs_enable_ints(struct if_cs_card *card) | |
232 | { | |
233 | lbs_deb_enter(LBS_DEB_CS); | |
234 | if_cs_write16(card, IF_CS_H_INT_MASK, 0); | |
235 | } | |
236 | ||
237 | static inline void if_cs_disable_ints(struct if_cs_card *card) | |
238 | { | |
239 | lbs_deb_enter(LBS_DEB_CS); | |
240 | if_cs_write16(card, IF_CS_H_INT_MASK, IF_CS_H_IM_MASK); | |
241 | } | |
242 | ||
243 | static irqreturn_t if_cs_interrupt(int irq, void *data) | |
244 | { | |
245 | struct if_cs_card *card = (struct if_cs_card *)data; | |
246 | u16 int_cause; | |
247 | ||
248 | lbs_deb_enter(LBS_DEB_CS); | |
249 | ||
250 | int_cause = if_cs_read16(card, IF_CS_C_INT_CAUSE); | |
251 | switch (int_cause) { | |
252 | case 0x0000: | |
253 | /* not for us */ | |
254 | return IRQ_NONE; | |
255 | case 0xffff: | |
256 | /* if one reads junk, then probably the card was removed */ | |
257 | card->priv->adapter->surpriseremoved = 1; | |
258 | break; | |
259 | case IF_CS_H_IC_TX_OVER: | |
260 | if (card->priv->adapter->connect_status == LIBERTAS_CONNECTED) | |
261 | netif_wake_queue(card->priv->dev); | |
262 | /* fallthrought */ | |
263 | default: | |
264 | /* clear interrupt */ | |
265 | if_cs_write16(card, IF_CS_C_INT_CAUSE, int_cause & IF_CS_C_IC_MASK); | |
266 | if_cs_disable_ints(card); | |
267 | } | |
268 | ||
269 | libertas_interrupt(card->priv->dev); | |
270 | ||
271 | return IRQ_HANDLED; | |
272 | } | |
273 | ||
274 | ||
275 | ||
276 | ||
277 | /********************************************************************/ | |
278 | /* I/O */ | |
279 | /********************************************************************/ | |
280 | ||
281 | /* | |
282 | * Called from if_cs_host_to_card to send a command to the hardware | |
283 | */ | |
284 | static int if_cs_send_cmd(wlan_private *priv, u8 *buf, u16 nb) | |
285 | { | |
286 | struct if_cs_card *card = (struct if_cs_card *)priv->card; | |
287 | int ret = -1; | |
288 | int loops = 0; | |
289 | ||
290 | lbs_deb_enter(LBS_DEB_CS); | |
291 | ||
292 | /* Is hardware ready? */ | |
293 | while (1) { | |
294 | u16 val = if_cs_read16(card, IF_CS_C_STATUS); | |
295 | if (val & IF_CS_C_S_CMD_DNLD_RDY) | |
296 | break; | |
297 | if (++loops > 100) { | |
298 | lbs_pr_err("card not ready for commands\n"); | |
299 | goto done; | |
300 | } | |
301 | mdelay(1); | |
302 | } | |
303 | ||
304 | if_cs_write16(card, IF_CS_H_CMD_LEN, nb); | |
305 | ||
306 | if_cs_write16_rep(card, IF_CS_H_CMD, buf, nb / 2); | |
307 | /* Are we supposed to transfer an odd amount of bytes? */ | |
308 | if (nb & 1) | |
309 | if_cs_write8(card, IF_CS_H_CMD, buf[nb-1]); | |
310 | ||
311 | /* "Assert the download over interrupt command in the Host | |
312 | * status register" */ | |
313 | if_cs_write16(card, IF_CS_H_STATUS, IF_CS_H_STATUS_DNLD_OVER); | |
314 | ||
315 | /* "Assert the download over interrupt command in the Card | |
316 | * interrupt case register" */ | |
317 | if_cs_write16(card, IF_CS_H_INT_CAUSE, IF_CS_H_IC_DNLD_OVER); | |
318 | ret = 0; | |
319 | ||
320 | done: | |
321 | lbs_deb_leave_args(LBS_DEB_CS, "ret %d", ret); | |
322 | return ret; | |
323 | } | |
324 | ||
325 | ||
326 | /* | |
327 | * Called from if_cs_host_to_card to send a data to the hardware | |
328 | */ | |
329 | static void if_cs_send_data(wlan_private *priv, u8 *buf, u16 nb) | |
330 | { | |
331 | struct if_cs_card *card = (struct if_cs_card *)priv->card; | |
332 | ||
333 | lbs_deb_enter(LBS_DEB_CS); | |
334 | ||
335 | if_cs_write16(card, IF_CS_H_WRITE_LEN, nb); | |
336 | ||
337 | /* write even number of bytes, then odd byte if necessary */ | |
338 | if_cs_write16_rep(card, IF_CS_H_WRITE, buf, nb / 2); | |
339 | if (nb & 1) | |
340 | if_cs_write8(card, IF_CS_H_WRITE, buf[nb-1]); | |
341 | ||
342 | if_cs_write16(card, IF_CS_H_STATUS, IF_CS_H_STATUS_TX_OVER); | |
343 | if_cs_write16(card, IF_CS_H_INT_CAUSE, IF_CS_H_STATUS_TX_OVER); | |
344 | ||
345 | lbs_deb_leave(LBS_DEB_CS); | |
346 | } | |
347 | ||
348 | ||
349 | /* | |
350 | * Get the command result out of the card. | |
351 | */ | |
352 | static int if_cs_receive_cmdres(wlan_private *priv, u8* data, u32 *len) | |
353 | { | |
354 | int ret = -1; | |
355 | u16 val; | |
356 | ||
357 | lbs_deb_enter(LBS_DEB_CS); | |
358 | ||
359 | /* is hardware ready? */ | |
360 | val = if_cs_read16(priv->card, IF_CS_C_STATUS); | |
361 | if ((val & IF_CS_C_S_CMD_UPLD_RDY) == 0) { | |
362 | lbs_pr_err("card not ready for CMD\n"); | |
363 | goto out; | |
364 | } | |
365 | ||
366 | *len = if_cs_read16(priv->card, IF_CS_C_CMD_LEN); | |
367 | if ((*len == 0) || (*len > MRVDRV_SIZE_OF_CMD_BUFFER)) { | |
368 | lbs_pr_err("card cmd buffer has invalid # of bytes (%d)\n", *len); | |
369 | goto out; | |
370 | } | |
371 | ||
372 | /* read even number of bytes, then odd byte if necessary */ | |
373 | if_cs_read16_rep(priv->card, IF_CS_C_CMD, data, *len/sizeof(u16)); | |
374 | if (*len & 1) | |
375 | data[*len-1] = if_cs_read8(priv->card, IF_CS_C_CMD); | |
376 | ||
377 | ret = 0; | |
378 | out: | |
379 | lbs_deb_leave_args(LBS_DEB_CS, "ret %d, len %d", ret, *len); | |
380 | return ret; | |
381 | } | |
382 | ||
383 | ||
384 | static struct sk_buff *if_cs_receive_data(wlan_private *priv) | |
385 | { | |
386 | struct sk_buff *skb = NULL; | |
387 | u16 len; | |
388 | u8 *data; | |
389 | ||
390 | lbs_deb_enter(LBS_DEB_CS); | |
391 | ||
392 | len = if_cs_read16(priv->card, IF_CS_C_READ_LEN); | |
393 | if (len == 0 || len > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE) { | |
394 | lbs_pr_err("card data buffer has invalid # of bytes (%d)\n", len); | |
395 | priv->stats.rx_dropped++; | |
396 | printk(KERN_INFO "##HS %s:%d TODO\n", __FUNCTION__, __LINE__); | |
397 | goto dat_err; | |
398 | } | |
399 | ||
400 | //TODO: skb = dev_alloc_skb(len+ETH_FRAME_LEN+MRVDRV_SNAP_HEADER_LEN+EXTRA_LEN); | |
401 | skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE); | |
402 | if (!skb) | |
403 | goto out; | |
404 | data = skb_put(skb, len); | |
405 | ||
406 | /* read even number of bytes, then odd byte if necessary */ | |
407 | if_cs_read16_rep(priv->card, IF_CS_H_READ, data, len/sizeof(u16)); | |
408 | if (len & 1) | |
409 | data[len-1] = if_cs_read8(priv->card, IF_CS_H_READ); | |
410 | ||
411 | dat_err: | |
412 | if_cs_write16(priv->card, IF_CS_H_STATUS, IF_CS_H_STATUS_RX_OVER); | |
413 | if_cs_write16(priv->card, IF_CS_H_INT_CAUSE, IF_CS_H_IC_RX_OVER); | |
414 | ||
415 | out: | |
416 | lbs_deb_leave_args(LBS_DEB_CS, "ret %p", skb); | |
417 | return skb; | |
418 | } | |
419 | ||
420 | ||
421 | ||
422 | /********************************************************************/ | |
423 | /* Firmware */ | |
424 | /********************************************************************/ | |
425 | ||
426 | /* | |
427 | * Tries to program the helper firmware. | |
428 | * | |
429 | * Return 0 on success | |
430 | */ | |
431 | static int if_cs_prog_helper(struct if_cs_card *card) | |
432 | { | |
433 | int ret = 0; | |
434 | int sent = 0; | |
435 | u8 scratch; | |
436 | const struct firmware *fw; | |
437 | ||
438 | lbs_deb_enter(LBS_DEB_CS); | |
439 | ||
440 | scratch = if_cs_read8(card, IF_CS_SCRATCH); | |
441 | ||
442 | /* "If the value is 0x5a, the firmware is already | |
443 | * downloaded successfully" | |
444 | */ | |
445 | if (scratch == 0x5a) | |
446 | goto done; | |
447 | ||
448 | /* "If the value is != 00, it is invalid value of register */ | |
449 | if (scratch != 0x00) { | |
450 | ret = -ENODEV; | |
451 | goto done; | |
452 | } | |
453 | ||
454 | /* TODO: make firmware file configurable */ | |
455 | ret = request_firmware(&fw, "libertas_cs_helper.fw", | |
456 | &handle_to_dev(card->p_dev)); | |
457 | if (ret) { | |
458 | lbs_pr_err("can't load helper firmware\n"); | |
459 | ret = -ENODEV; | |
460 | goto done; | |
461 | } | |
4ecd41bd | 462 | lbs_deb_cs("helper size %td\n", fw->size); |
27590d06 HS |
463 | |
464 | /* "Set the 5 bytes of the helper image to 0" */ | |
465 | /* Not needed, this contains an ARM branch instruction */ | |
466 | ||
467 | for (;;) { | |
468 | /* "the number of bytes to send is 256" */ | |
469 | int count = 256; | |
470 | int remain = fw->size - sent; | |
471 | ||
472 | if (remain < count) | |
473 | count = remain; | |
474 | /* printk(KERN_INFO "//HS %d loading %d of %d bytes\n", | |
475 | __LINE__, sent, fw->size); */ | |
476 | ||
477 | /* "write the number of bytes to be sent to the I/O Command | |
478 | * write length register" */ | |
479 | if_cs_write16(card, IF_CS_H_CMD_LEN, count); | |
480 | ||
481 | /* "write this to I/O Command port register as 16 bit writes */ | |
482 | if (count) | |
483 | if_cs_write16_rep(card, IF_CS_H_CMD, | |
484 | &fw->data[sent], | |
485 | count >> 1); | |
486 | ||
487 | /* "Assert the download over interrupt command in the Host | |
488 | * status register" */ | |
489 | if_cs_write8(card, IF_CS_H_STATUS, IF_CS_H_STATUS_DNLD_OVER); | |
490 | ||
491 | /* "Assert the download over interrupt command in the Card | |
492 | * interrupt case register" */ | |
493 | if_cs_write16(card, IF_CS_H_INT_CAUSE, IF_CS_H_IC_DNLD_OVER); | |
494 | ||
495 | /* "The host polls the Card Status register ... for 50 ms before | |
496 | declaring a failure */ | |
497 | ret = if_cs_poll_while_fw_download(card, IF_CS_C_STATUS, | |
498 | IF_CS_C_S_CMD_DNLD_RDY); | |
499 | if (ret < 0) { | |
500 | lbs_pr_err("can't download helper at 0x%x, ret %d\n", | |
501 | sent, ret); | |
502 | goto done; | |
503 | } | |
504 | ||
505 | if (count == 0) | |
506 | break; | |
507 | ||
508 | sent += count; | |
509 | } | |
510 | ||
511 | release_firmware(fw); | |
512 | ret = 0; | |
513 | ||
514 | done: | |
515 | lbs_deb_leave_args(LBS_DEB_CS, "ret %d", ret); | |
516 | return ret; | |
517 | } | |
518 | ||
519 | ||
520 | static int if_cs_prog_real(struct if_cs_card *card) | |
521 | { | |
522 | const struct firmware *fw; | |
523 | int ret = 0; | |
524 | int retry = 0; | |
525 | int len = 0; | |
526 | int sent; | |
527 | ||
528 | lbs_deb_enter(LBS_DEB_CS); | |
529 | ||
530 | /* TODO: make firmware file configurable */ | |
531 | ret = request_firmware(&fw, "libertas_cs.fw", | |
532 | &handle_to_dev(card->p_dev)); | |
533 | if (ret) { | |
534 | lbs_pr_err("can't load firmware\n"); | |
535 | ret = -ENODEV; | |
536 | goto done; | |
537 | } | |
4ecd41bd | 538 | lbs_deb_cs("fw size %td\n", fw->size); |
27590d06 HS |
539 | |
540 | ret = if_cs_poll_while_fw_download(card, IF_CS_C_SQ_READ_LOW, IF_CS_C_SQ_HELPER_OK); | |
541 | if (ret < 0) { | |
542 | int i; | |
543 | lbs_pr_err("helper firmware doesn't answer\n"); | |
544 | for (i = 0; i < 0x50; i += 2) | |
545 | printk(KERN_INFO "## HS %02x: %04x\n", | |
546 | i, if_cs_read16(card, i)); | |
547 | goto err_release; | |
548 | } | |
549 | ||
550 | for (sent = 0; sent < fw->size; sent += len) { | |
551 | len = if_cs_read16(card, IF_CS_C_SQ_READ_LOW); | |
552 | /* printk(KERN_INFO "//HS %d loading %d of %d bytes\n", | |
553 | __LINE__, sent, fw->size); */ | |
554 | if (len & 1) { | |
555 | retry++; | |
556 | lbs_pr_info("odd, need to retry this firmware block\n"); | |
557 | } else { | |
558 | retry = 0; | |
559 | } | |
560 | ||
561 | if (retry > 20) { | |
562 | lbs_pr_err("could not download firmware\n"); | |
563 | ret = -ENODEV; | |
564 | goto err_release; | |
565 | } | |
566 | if (retry) { | |
567 | sent -= len; | |
568 | } | |
569 | ||
570 | ||
571 | if_cs_write16(card, IF_CS_H_CMD_LEN, len); | |
572 | ||
573 | if_cs_write16_rep(card, IF_CS_H_CMD, | |
574 | &fw->data[sent], | |
575 | (len+1) >> 1); | |
576 | if_cs_write8(card, IF_CS_H_STATUS, IF_CS_H_STATUS_DNLD_OVER); | |
577 | if_cs_write16(card, IF_CS_H_INT_CAUSE, IF_CS_H_IC_DNLD_OVER); | |
578 | ||
579 | ret = if_cs_poll_while_fw_download(card, IF_CS_C_STATUS, | |
580 | IF_CS_C_S_CMD_DNLD_RDY); | |
581 | if (ret < 0) { | |
582 | lbs_pr_err("can't download firmware at 0x%x\n", sent); | |
583 | goto err_release; | |
584 | } | |
585 | } | |
586 | ||
587 | ret = if_cs_poll_while_fw_download(card, IF_CS_SCRATCH, 0x5a); | |
588 | if (ret < 0) { | |
589 | lbs_pr_err("firmware download failed\n"); | |
590 | goto err_release; | |
591 | } | |
592 | ||
593 | ret = 0; | |
594 | goto done; | |
595 | ||
596 | ||
597 | err_release: | |
598 | release_firmware(fw); | |
599 | ||
600 | done: | |
601 | lbs_deb_leave_args(LBS_DEB_CS, "ret %d", ret); | |
602 | return ret; | |
603 | } | |
604 | ||
605 | ||
606 | ||
607 | /********************************************************************/ | |
608 | /* Callback functions for libertas.ko */ | |
609 | /********************************************************************/ | |
610 | ||
27590d06 HS |
611 | /* Send commands or data packets to the card */ |
612 | static int if_cs_host_to_card(wlan_private *priv, u8 type, u8 *buf, u16 nb) | |
613 | { | |
614 | int ret = -1; | |
615 | ||
616 | lbs_deb_enter_args(LBS_DEB_CS, "type %d, bytes %d", type, nb); | |
617 | ||
618 | switch (type) { | |
619 | case MVMS_DAT: | |
620 | priv->dnld_sent = DNLD_CMD_SENT; | |
621 | if_cs_send_data(priv, buf, nb); | |
622 | ret = 0; | |
623 | break; | |
624 | case MVMS_CMD: | |
625 | ret = if_cs_send_cmd(priv, buf, nb); | |
626 | break; | |
627 | default: | |
628 | lbs_pr_err("%s: unsupported type %d\n", __FUNCTION__, type); | |
629 | } | |
630 | ||
631 | lbs_deb_leave_args(LBS_DEB_CS, "ret %d", ret); | |
632 | return ret; | |
633 | } | |
634 | ||
635 | ||
636 | static int if_cs_get_int_status(wlan_private *priv, u8 *ireg) | |
637 | { | |
638 | struct if_cs_card *card = (struct if_cs_card *)priv->card; | |
639 | //wlan_adapter *adapter = priv->adapter; | |
640 | int ret = 0; | |
641 | u16 int_cause; | |
642 | u8 *cmdbuf; | |
643 | *ireg = 0; | |
644 | ||
645 | lbs_deb_enter(LBS_DEB_CS); | |
646 | ||
647 | if (priv->adapter->surpriseremoved) | |
648 | goto out; | |
649 | ||
650 | int_cause = if_cs_read16(card, IF_CS_C_INT_CAUSE) & IF_CS_C_IC_MASK; | |
651 | if_cs_write16(card, IF_CS_C_INT_CAUSE, int_cause); | |
652 | ||
653 | *ireg = if_cs_read16(card, IF_CS_C_STATUS) & IF_CS_C_S_MASK; | |
654 | if_cs_enable_ints(card); | |
655 | ||
656 | if (!*ireg) | |
657 | goto sbi_get_int_status_exit; | |
658 | ||
659 | sbi_get_int_status_exit: | |
660 | ||
661 | /* is there a data packet for us? */ | |
662 | if (*ireg & IF_CS_C_S_RX_UPLD_RDY) { | |
663 | struct sk_buff *skb = if_cs_receive_data(priv); | |
664 | libertas_process_rxed_packet(priv, skb); | |
665 | *ireg &= ~IF_CS_C_S_RX_UPLD_RDY; | |
666 | } | |
667 | ||
668 | if (*ireg & IF_CS_C_S_TX_DNLD_RDY) { | |
669 | priv->dnld_sent = DNLD_RES_RECEIVED; | |
670 | } | |
671 | ||
672 | /* Card has a command result for us */ | |
673 | if (*ireg & IF_CS_C_S_CMD_UPLD_RDY) { | |
674 | spin_lock(&priv->adapter->driver_lock); | |
675 | if (!priv->adapter->cur_cmd) { | |
676 | cmdbuf = priv->upld_buf; | |
677 | priv->adapter->hisregcpy &= ~IF_CS_C_S_RX_UPLD_RDY; | |
678 | } else { | |
679 | cmdbuf = priv->adapter->cur_cmd->bufvirtualaddr; | |
680 | } | |
681 | ||
682 | ret = if_cs_receive_cmdres(priv, cmdbuf, &priv->upld_len); | |
683 | spin_unlock(&priv->adapter->driver_lock); | |
684 | if (ret < 0) | |
685 | lbs_pr_err("could not receive cmd from card\n"); | |
686 | } | |
687 | ||
688 | out: | |
689 | lbs_deb_leave_args(LBS_DEB_CS, "ret %d, ireg 0x%x, hisregcpy 0x%x", ret, *ireg, priv->adapter->hisregcpy); | |
690 | return ret; | |
691 | } | |
692 | ||
693 | ||
694 | static int if_cs_read_event_cause(wlan_private *priv) | |
695 | { | |
696 | lbs_deb_enter(LBS_DEB_CS); | |
697 | ||
698 | priv->adapter->eventcause = (if_cs_read16(priv->card, IF_CS_C_STATUS) & IF_CS_C_S_STATUS_MASK) >> 5; | |
699 | if_cs_write16(priv->card, IF_CS_H_INT_CAUSE, IF_CS_H_IC_HOST_EVENT); | |
700 | ||
701 | return 0; | |
702 | } | |
703 | ||
704 | ||
705 | ||
706 | /********************************************************************/ | |
707 | /* Card Services */ | |
708 | /********************************************************************/ | |
709 | ||
710 | /* | |
711 | * After a card is removed, if_cs_release() will unregister the | |
712 | * device, and release the PCMCIA configuration. If the device is | |
713 | * still open, this will be postponed until it is closed. | |
714 | */ | |
715 | static void if_cs_release(struct pcmcia_device *p_dev) | |
716 | { | |
717 | struct if_cs_card *card = p_dev->priv; | |
718 | ||
719 | lbs_deb_enter(LBS_DEB_CS); | |
720 | ||
721 | pcmcia_disable_device(p_dev); | |
722 | free_irq(p_dev->irq.AssignedIRQ, card); | |
723 | if (card->iobase) | |
724 | ioport_unmap(card->iobase); | |
725 | ||
726 | lbs_deb_leave(LBS_DEB_CS); | |
727 | } | |
728 | ||
729 | ||
730 | /* | |
731 | * This creates an "instance" of the driver, allocating local data | |
732 | * structures for one device. The device is registered with Card | |
733 | * Services. | |
734 | * | |
735 | * The dev_link structure is initialized, but we don't actually | |
736 | * configure the card at this point -- we wait until we receive a card | |
737 | * insertion event. | |
738 | */ | |
739 | static int if_cs_probe(struct pcmcia_device *p_dev) | |
740 | { | |
741 | int ret = -ENOMEM; | |
742 | wlan_private *priv; | |
743 | struct if_cs_card *card; | |
744 | /* CIS parsing */ | |
745 | tuple_t tuple; | |
746 | cisparse_t parse; | |
747 | cistpl_cftable_entry_t *cfg = &parse.cftable_entry; | |
748 | cistpl_io_t *io = &cfg->io; | |
749 | u_char buf[64]; | |
750 | ||
751 | lbs_deb_enter(LBS_DEB_CS); | |
752 | ||
753 | card = kzalloc(sizeof(struct if_cs_card), GFP_KERNEL); | |
754 | if (!card) { | |
755 | lbs_pr_err("error in kzalloc\n"); | |
756 | goto out; | |
757 | } | |
758 | card->p_dev = p_dev; | |
759 | p_dev->priv = card; | |
760 | ||
761 | p_dev->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING; | |
762 | p_dev->irq.Handler = NULL; | |
763 | p_dev->irq.IRQInfo1 = IRQ_INFO2_VALID | IRQ_LEVEL_ID; | |
764 | ||
765 | p_dev->conf.Attributes = 0; | |
766 | p_dev->conf.IntType = INT_MEMORY_AND_IO; | |
767 | ||
768 | tuple.Attributes = 0; | |
769 | tuple.TupleData = buf; | |
770 | tuple.TupleDataMax = sizeof(buf); | |
771 | tuple.TupleOffset = 0; | |
772 | ||
773 | tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; | |
774 | if ((ret = pcmcia_get_first_tuple(p_dev, &tuple)) != 0 || | |
775 | (ret = pcmcia_get_tuple_data(p_dev, &tuple)) != 0 || | |
776 | (ret = pcmcia_parse_tuple(p_dev, &tuple, &parse)) != 0) | |
777 | { | |
778 | lbs_pr_err("error in pcmcia_get_first_tuple etc\n"); | |
779 | goto out1; | |
780 | } | |
781 | ||
782 | p_dev->conf.ConfigIndex = cfg->index; | |
783 | ||
784 | /* Do we need to allocate an interrupt? */ | |
785 | if (cfg->irq.IRQInfo1) { | |
786 | p_dev->conf.Attributes |= CONF_ENABLE_IRQ; | |
787 | } | |
788 | ||
789 | /* IO window settings */ | |
790 | if (cfg->io.nwin != 1) { | |
791 | lbs_pr_err("wrong CIS (check number of IO windows)\n"); | |
792 | ret = -ENODEV; | |
793 | goto out1; | |
794 | } | |
795 | p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO; | |
796 | p_dev->io.BasePort1 = io->win[0].base; | |
797 | p_dev->io.NumPorts1 = io->win[0].len; | |
798 | ||
799 | /* This reserves IO space but doesn't actually enable it */ | |
800 | ret = pcmcia_request_io(p_dev, &p_dev->io); | |
801 | if (ret) { | |
802 | lbs_pr_err("error in pcmcia_request_io\n"); | |
803 | goto out1; | |
804 | } | |
805 | ||
806 | /* | |
807 | * Allocate an interrupt line. Note that this does not assign | |
808 | * a handler to the interrupt, unless the 'Handler' member of | |
809 | * the irq structure is initialized. | |
810 | */ | |
811 | if (p_dev->conf.Attributes & CONF_ENABLE_IRQ) { | |
812 | ret = pcmcia_request_irq(p_dev, &p_dev->irq); | |
813 | if (ret) { | |
814 | lbs_pr_err("error in pcmcia_request_irq\n"); | |
815 | goto out1; | |
816 | } | |
817 | } | |
818 | ||
819 | /* Initialize io access */ | |
820 | card->iobase = ioport_map(p_dev->io.BasePort1, p_dev->io.NumPorts1); | |
821 | if (!card->iobase) { | |
822 | lbs_pr_err("error in ioport_map\n"); | |
823 | ret = -EIO; | |
824 | goto out1; | |
825 | } | |
826 | ||
827 | /* | |
828 | * This actually configures the PCMCIA socket -- setting up | |
829 | * the I/O windows and the interrupt mapping, and putting the | |
830 | * card and host interface into "Memory and IO" mode. | |
831 | */ | |
832 | ret = pcmcia_request_configuration(p_dev, &p_dev->conf); | |
833 | if (ret) { | |
834 | lbs_pr_err("error in pcmcia_request_configuration\n"); | |
835 | goto out2; | |
836 | } | |
837 | ||
838 | /* Finally, report what we've done */ | |
839 | lbs_deb_cs("irq %d, io 0x%04x-0x%04x\n", | |
840 | p_dev->irq.AssignedIRQ, p_dev->io.BasePort1, | |
841 | p_dev->io.BasePort1 + p_dev->io.NumPorts1 - 1); | |
842 | ||
843 | if_cs_enable_ints(card); | |
844 | ||
845 | /* Load the firmware early, before calling into libertas.ko */ | |
846 | ret = if_cs_prog_helper(card); | |
847 | if (ret == 0) | |
848 | ret = if_cs_prog_real(card); | |
849 | if (ret) | |
850 | goto out2; | |
851 | ||
852 | /* Make this card known to the libertas driver */ | |
853 | priv = libertas_add_card(card, &p_dev->dev); | |
854 | if (!priv) { | |
855 | ret = -ENOMEM; | |
856 | goto out2; | |
857 | } | |
858 | ||
859 | /* Store pointers to our call-back functions */ | |
954ee164 | 860 | card->priv = priv; |
27590d06 | 861 | priv->card = card; |
27590d06 HS |
862 | priv->hw_host_to_card = if_cs_host_to_card; |
863 | priv->hw_get_int_status = if_cs_get_int_status; | |
864 | priv->hw_read_event_cause = if_cs_read_event_cause; | |
865 | ||
954ee164 DW |
866 | priv->adapter->fw_ready = 1; |
867 | ||
27590d06 HS |
868 | /* Now actually get the IRQ */ |
869 | ret = request_irq(p_dev->irq.AssignedIRQ, if_cs_interrupt, | |
870 | IRQF_SHARED, DRV_NAME, card); | |
871 | if (ret) { | |
872 | lbs_pr_err("error in request_irq\n"); | |
873 | goto out3; | |
874 | } | |
875 | ||
876 | /* And finally bring the card up */ | |
954ee164 | 877 | if (libertas_start_card(priv) != 0) { |
27590d06 HS |
878 | lbs_pr_err("could not activate card\n"); |
879 | goto out3; | |
880 | } | |
881 | ||
882 | ret = 0; | |
883 | goto out; | |
884 | ||
885 | out3: | |
886 | libertas_remove_card(priv); | |
887 | out2: | |
888 | ioport_unmap(card->iobase); | |
889 | out1: | |
890 | pcmcia_disable_device(p_dev); | |
891 | out: | |
892 | lbs_deb_leave_args(LBS_DEB_CS, "ret %d", ret); | |
893 | return ret; | |
894 | } | |
895 | ||
896 | ||
897 | /* | |
898 | * This deletes a driver "instance". The device is de-registered with | |
899 | * Card Services. If it has been released, all local data structures | |
900 | * are freed. Otherwise, the structures will be freed when the device | |
901 | * is released. | |
902 | */ | |
903 | static void if_cs_detach(struct pcmcia_device *p_dev) | |
904 | { | |
905 | struct if_cs_card *card = p_dev->priv; | |
906 | ||
907 | lbs_deb_enter(LBS_DEB_CS); | |
908 | ||
954ee164 | 909 | libertas_stop_card(card->priv); |
27590d06 HS |
910 | libertas_remove_card(card->priv); |
911 | if_cs_release(p_dev); | |
912 | kfree(card); | |
913 | ||
914 | lbs_deb_leave(LBS_DEB_CS); | |
915 | } | |
916 | ||
917 | ||
918 | ||
919 | /********************************************************************/ | |
920 | /* Module initialization */ | |
921 | /********************************************************************/ | |
922 | ||
923 | static struct pcmcia_device_id if_cs_ids[] = { | |
924 | PCMCIA_DEVICE_MANF_CARD(0x02df, 0x8103), | |
925 | PCMCIA_DEVICE_NULL, | |
926 | }; | |
927 | MODULE_DEVICE_TABLE(pcmcia, if_cs_ids); | |
928 | ||
929 | ||
930 | static struct pcmcia_driver libertas_driver = { | |
931 | .owner = THIS_MODULE, | |
932 | .drv = { | |
933 | .name = DRV_NAME, | |
934 | }, | |
935 | .probe = if_cs_probe, | |
936 | .remove = if_cs_detach, | |
937 | .id_table = if_cs_ids, | |
938 | }; | |
939 | ||
940 | ||
941 | static int __init if_cs_init(void) | |
942 | { | |
943 | int ret; | |
944 | ||
945 | lbs_deb_enter(LBS_DEB_CS); | |
946 | ret = pcmcia_register_driver(&libertas_driver); | |
947 | lbs_deb_leave(LBS_DEB_CS); | |
948 | return ret; | |
949 | } | |
950 | ||
951 | ||
952 | static void __exit if_cs_exit(void) | |
953 | { | |
954 | lbs_deb_enter(LBS_DEB_CS); | |
955 | pcmcia_unregister_driver(&libertas_driver); | |
956 | lbs_deb_leave(LBS_DEB_CS); | |
957 | } | |
958 | ||
959 | ||
960 | module_init(if_cs_init); | |
961 | module_exit(if_cs_exit); |