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b481de9c ZY |
1 | /****************************************************************************** |
2 | * | |
3 | * Copyright(c) 2003 - 2007 Intel Corporation. All rights reserved. | |
4 | * | |
5 | * Portions of this file are derived from the ipw3945 project, as well | |
6 | * as portions of the ieee80211 subsystem header files. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of version 2 of the GNU General Public License as | |
10 | * published by the Free Software Foundation. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
13 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
15 | * more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along with | |
18 | * this program; if not, write to the Free Software Foundation, Inc., | |
19 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA | |
20 | * | |
21 | * The full GNU General Public License is included in this distribution in the | |
22 | * file called LICENSE. | |
23 | * | |
24 | * Contact Information: | |
25 | * James P. Ketrenos <ipw2100-admin@linux.intel.com> | |
26 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
27 | * | |
28 | *****************************************************************************/ | |
29 | ||
30 | /* | |
31 | * NOTE: This file (iwl-base.c) is used to build to multiple hardware targets | |
32 | * by defining IWL to either 3945 or 4965. The Makefile used when building | |
33 | * the base targets will create base-3945.o and base-4965.o | |
34 | * | |
35 | * The eventual goal is to move as many of the #if IWL / #endif blocks out of | |
36 | * this file and into the hardware specific implementation files (iwl-XXXX.c) | |
37 | * and leave only the common (non #ifdef sprinkled) code in this file | |
38 | */ | |
39 | ||
40 | #include <linux/kernel.h> | |
41 | #include <linux/module.h> | |
42 | #include <linux/version.h> | |
43 | #include <linux/init.h> | |
44 | #include <linux/pci.h> | |
45 | #include <linux/dma-mapping.h> | |
46 | #include <linux/delay.h> | |
47 | #include <linux/skbuff.h> | |
48 | #include <linux/netdevice.h> | |
49 | #include <linux/wireless.h> | |
50 | #include <linux/firmware.h> | |
b481de9c ZY |
51 | #include <linux/etherdevice.h> |
52 | #include <linux/if_arp.h> | |
53 | ||
54 | #include <net/ieee80211_radiotap.h> | |
55 | #include <net/mac80211.h> | |
56 | ||
57 | #include <asm/div64.h> | |
58 | ||
1156b2c6 ZY |
59 | #define IWL 3945 |
60 | ||
b481de9c ZY |
61 | #include "iwlwifi.h" |
62 | #include "iwl-3945.h" | |
63 | #include "iwl-helpers.h" | |
64 | ||
65 | #ifdef CONFIG_IWLWIFI_DEBUG | |
66 | u32 iwl_debug_level; | |
67 | #endif | |
68 | ||
69 | /****************************************************************************** | |
70 | * | |
71 | * module boiler plate | |
72 | * | |
73 | ******************************************************************************/ | |
74 | ||
75 | /* module parameters */ | |
76 | int iwl_param_disable_hw_scan; | |
77 | int iwl_param_debug; | |
78 | int iwl_param_disable; /* def: enable radio */ | |
79 | int iwl_param_antenna; /* def: 0 = both antennas (use diversity) */ | |
80 | int iwl_param_hwcrypto; /* def: using software encryption */ | |
81 | int iwl_param_qos_enable = 1; | |
82 | int iwl_param_queues_num = IWL_MAX_NUM_QUEUES; | |
83 | ||
84 | /* | |
85 | * module name, copyright, version, etc. | |
86 | * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk | |
87 | */ | |
88 | ||
89 | #define DRV_DESCRIPTION \ | |
90 | "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux" | |
91 | ||
92 | #ifdef CONFIG_IWLWIFI_DEBUG | |
93 | #define VD "d" | |
94 | #else | |
95 | #define VD | |
96 | #endif | |
97 | ||
98 | #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT | |
99 | #define VS "s" | |
100 | #else | |
101 | #define VS | |
102 | #endif | |
103 | ||
61f62253 | 104 | #define IWLWIFI_VERSION "1.1.17k" VD VS |
b481de9c ZY |
105 | #define DRV_COPYRIGHT "Copyright(c) 2003-2007 Intel Corporation" |
106 | #define DRV_VERSION IWLWIFI_VERSION | |
107 | ||
108 | /* Change firmware file name, using "-" and incrementing number, | |
109 | * *only* when uCode interface or architecture changes so that it | |
110 | * is not compatible with earlier drivers. | |
111 | * This number will also appear in << 8 position of 1st dword of uCode file */ | |
112 | #define IWL3945_UCODE_API "-1" | |
113 | ||
114 | MODULE_DESCRIPTION(DRV_DESCRIPTION); | |
115 | MODULE_VERSION(DRV_VERSION); | |
116 | MODULE_AUTHOR(DRV_COPYRIGHT); | |
117 | MODULE_LICENSE("GPL"); | |
118 | ||
119 | __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr) | |
120 | { | |
121 | u16 fc = le16_to_cpu(hdr->frame_control); | |
122 | int hdr_len = ieee80211_get_hdrlen(fc); | |
123 | ||
124 | if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA)) | |
125 | return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN); | |
126 | return NULL; | |
127 | } | |
128 | ||
129 | static const struct ieee80211_hw_mode *iwl_get_hw_mode( | |
130 | struct iwl_priv *priv, int mode) | |
131 | { | |
132 | int i; | |
133 | ||
134 | for (i = 0; i < 3; i++) | |
135 | if (priv->modes[i].mode == mode) | |
136 | return &priv->modes[i]; | |
137 | ||
138 | return NULL; | |
139 | } | |
140 | ||
141 | static int iwl_is_empty_essid(const char *essid, int essid_len) | |
142 | { | |
143 | /* Single white space is for Linksys APs */ | |
144 | if (essid_len == 1 && essid[0] == ' ') | |
145 | return 1; | |
146 | ||
147 | /* Otherwise, if the entire essid is 0, we assume it is hidden */ | |
148 | while (essid_len) { | |
149 | essid_len--; | |
150 | if (essid[essid_len] != '\0') | |
151 | return 0; | |
152 | } | |
153 | ||
154 | return 1; | |
155 | } | |
156 | ||
157 | static const char *iwl_escape_essid(const char *essid, u8 essid_len) | |
158 | { | |
159 | static char escaped[IW_ESSID_MAX_SIZE * 2 + 1]; | |
160 | const char *s = essid; | |
161 | char *d = escaped; | |
162 | ||
163 | if (iwl_is_empty_essid(essid, essid_len)) { | |
164 | memcpy(escaped, "<hidden>", sizeof("<hidden>")); | |
165 | return escaped; | |
166 | } | |
167 | ||
168 | essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE); | |
169 | while (essid_len--) { | |
170 | if (*s == '\0') { | |
171 | *d++ = '\\'; | |
172 | *d++ = '0'; | |
173 | s++; | |
174 | } else | |
175 | *d++ = *s++; | |
176 | } | |
177 | *d = '\0'; | |
178 | return escaped; | |
179 | } | |
180 | ||
181 | static void iwl_print_hex_dump(int level, void *p, u32 len) | |
182 | { | |
183 | #ifdef CONFIG_IWLWIFI_DEBUG | |
184 | if (!(iwl_debug_level & level)) | |
185 | return; | |
186 | ||
187 | print_hex_dump(KERN_DEBUG, "iwl data: ", DUMP_PREFIX_OFFSET, 16, 1, | |
188 | p, len, 1); | |
189 | #endif | |
190 | } | |
191 | ||
192 | /*************** DMA-QUEUE-GENERAL-FUNCTIONS ***** | |
193 | * DMA services | |
194 | * | |
195 | * Theory of operation | |
196 | * | |
197 | * A queue is a circular buffers with 'Read' and 'Write' pointers. | |
198 | * 2 empty entries always kept in the buffer to protect from overflow. | |
199 | * | |
200 | * For Tx queue, there are low mark and high mark limits. If, after queuing | |
201 | * the packet for Tx, free space become < low mark, Tx queue stopped. When | |
202 | * reclaiming packets (on 'tx done IRQ), if free space become > high mark, | |
203 | * Tx queue resumed. | |
204 | * | |
583fab37 | 205 | * The IWL operates with six queues, one receive queue in the device's |
b481de9c ZY |
206 | * sram, one transmit queue for sending commands to the device firmware, |
207 | * and four transmit queues for data. | |
208 | ***************************************************/ | |
209 | ||
210 | static int iwl_queue_space(const struct iwl_queue *q) | |
211 | { | |
212 | int s = q->last_used - q->first_empty; | |
213 | ||
214 | if (q->last_used > q->first_empty) | |
215 | s -= q->n_bd; | |
216 | ||
217 | if (s <= 0) | |
218 | s += q->n_window; | |
219 | /* keep some reserve to not confuse empty and full situations */ | |
220 | s -= 2; | |
221 | if (s < 0) | |
222 | s = 0; | |
223 | return s; | |
224 | } | |
225 | ||
226 | /* XXX: n_bd must be power-of-two size */ | |
227 | static inline int iwl_queue_inc_wrap(int index, int n_bd) | |
228 | { | |
229 | return ++index & (n_bd - 1); | |
230 | } | |
231 | ||
232 | /* XXX: n_bd must be power-of-two size */ | |
233 | static inline int iwl_queue_dec_wrap(int index, int n_bd) | |
234 | { | |
235 | return --index & (n_bd - 1); | |
236 | } | |
237 | ||
238 | static inline int x2_queue_used(const struct iwl_queue *q, int i) | |
239 | { | |
240 | return q->first_empty > q->last_used ? | |
241 | (i >= q->last_used && i < q->first_empty) : | |
242 | !(i < q->last_used && i >= q->first_empty); | |
243 | } | |
244 | ||
245 | static inline u8 get_cmd_index(struct iwl_queue *q, u32 index, int is_huge) | |
246 | { | |
247 | if (is_huge) | |
248 | return q->n_window; | |
249 | ||
250 | return index & (q->n_window - 1); | |
251 | } | |
252 | ||
253 | static int iwl_queue_init(struct iwl_priv *priv, struct iwl_queue *q, | |
254 | int count, int slots_num, u32 id) | |
255 | { | |
256 | q->n_bd = count; | |
257 | q->n_window = slots_num; | |
258 | q->id = id; | |
259 | ||
260 | /* count must be power-of-two size, otherwise iwl_queue_inc_wrap | |
261 | * and iwl_queue_dec_wrap are broken. */ | |
262 | BUG_ON(!is_power_of_2(count)); | |
263 | ||
264 | /* slots_num must be power-of-two size, otherwise | |
265 | * get_cmd_index is broken. */ | |
266 | BUG_ON(!is_power_of_2(slots_num)); | |
267 | ||
268 | q->low_mark = q->n_window / 4; | |
269 | if (q->low_mark < 4) | |
270 | q->low_mark = 4; | |
271 | ||
272 | q->high_mark = q->n_window / 8; | |
273 | if (q->high_mark < 2) | |
274 | q->high_mark = 2; | |
275 | ||
276 | q->first_empty = q->last_used = 0; | |
277 | ||
278 | return 0; | |
279 | } | |
280 | ||
281 | static int iwl_tx_queue_alloc(struct iwl_priv *priv, | |
282 | struct iwl_tx_queue *txq, u32 id) | |
283 | { | |
284 | struct pci_dev *dev = priv->pci_dev; | |
285 | ||
286 | if (id != IWL_CMD_QUEUE_NUM) { | |
287 | txq->txb = kmalloc(sizeof(txq->txb[0]) * | |
288 | TFD_QUEUE_SIZE_MAX, GFP_KERNEL); | |
289 | if (!txq->txb) { | |
01ebd063 | 290 | IWL_ERROR("kmalloc for auxiliary BD " |
b481de9c ZY |
291 | "structures failed\n"); |
292 | goto error; | |
293 | } | |
294 | } else | |
295 | txq->txb = NULL; | |
296 | ||
297 | txq->bd = pci_alloc_consistent(dev, | |
298 | sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX, | |
299 | &txq->q.dma_addr); | |
300 | ||
301 | if (!txq->bd) { | |
302 | IWL_ERROR("pci_alloc_consistent(%zd) failed\n", | |
303 | sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX); | |
304 | goto error; | |
305 | } | |
306 | txq->q.id = id; | |
307 | ||
308 | return 0; | |
309 | ||
310 | error: | |
311 | if (txq->txb) { | |
312 | kfree(txq->txb); | |
313 | txq->txb = NULL; | |
314 | } | |
315 | ||
316 | return -ENOMEM; | |
317 | } | |
318 | ||
319 | int iwl_tx_queue_init(struct iwl_priv *priv, | |
320 | struct iwl_tx_queue *txq, int slots_num, u32 txq_id) | |
321 | { | |
322 | struct pci_dev *dev = priv->pci_dev; | |
323 | int len; | |
324 | int rc = 0; | |
325 | ||
01ebd063 | 326 | /* allocate command space + one big command for scan since scan |
b481de9c ZY |
327 | * command is very huge the system will not have two scan at the |
328 | * same time */ | |
329 | len = sizeof(struct iwl_cmd) * slots_num; | |
330 | if (txq_id == IWL_CMD_QUEUE_NUM) | |
331 | len += IWL_MAX_SCAN_SIZE; | |
332 | txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd); | |
333 | if (!txq->cmd) | |
334 | return -ENOMEM; | |
335 | ||
336 | rc = iwl_tx_queue_alloc(priv, txq, txq_id); | |
337 | if (rc) { | |
338 | pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd); | |
339 | ||
340 | return -ENOMEM; | |
341 | } | |
342 | txq->need_update = 0; | |
343 | ||
344 | /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise | |
345 | * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */ | |
346 | BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1)); | |
347 | iwl_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id); | |
348 | ||
349 | iwl_hw_tx_queue_init(priv, txq); | |
350 | ||
351 | return 0; | |
352 | } | |
353 | ||
354 | /** | |
355 | * iwl_tx_queue_free - Deallocate DMA queue. | |
356 | * @txq: Transmit queue to deallocate. | |
357 | * | |
358 | * Empty queue by removing and destroying all BD's. | |
359 | * Free all buffers. txq itself is not freed. | |
360 | * | |
361 | */ | |
362 | void iwl_tx_queue_free(struct iwl_priv *priv, struct iwl_tx_queue *txq) | |
363 | { | |
364 | struct iwl_queue *q = &txq->q; | |
365 | struct pci_dev *dev = priv->pci_dev; | |
366 | int len; | |
367 | ||
368 | if (q->n_bd == 0) | |
369 | return; | |
370 | ||
371 | /* first, empty all BD's */ | |
372 | for (; q->first_empty != q->last_used; | |
373 | q->last_used = iwl_queue_inc_wrap(q->last_used, q->n_bd)) | |
374 | iwl_hw_txq_free_tfd(priv, txq); | |
375 | ||
376 | len = sizeof(struct iwl_cmd) * q->n_window; | |
377 | if (q->id == IWL_CMD_QUEUE_NUM) | |
378 | len += IWL_MAX_SCAN_SIZE; | |
379 | ||
380 | pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd); | |
381 | ||
382 | /* free buffers belonging to queue itself */ | |
383 | if (txq->q.n_bd) | |
384 | pci_free_consistent(dev, sizeof(struct iwl_tfd_frame) * | |
385 | txq->q.n_bd, txq->bd, txq->q.dma_addr); | |
386 | ||
387 | if (txq->txb) { | |
388 | kfree(txq->txb); | |
389 | txq->txb = NULL; | |
390 | } | |
391 | ||
392 | /* 0 fill whole structure */ | |
393 | memset(txq, 0, sizeof(*txq)); | |
394 | } | |
395 | ||
396 | const u8 BROADCAST_ADDR[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; | |
397 | ||
398 | /*************** STATION TABLE MANAGEMENT **** | |
399 | * | |
400 | * NOTE: This needs to be overhauled to better synchronize between | |
401 | * how the iwl-4965.c is using iwl_hw_find_station vs. iwl-3945.c | |
402 | * | |
403 | * mac80211 should also be examined to determine if sta_info is duplicating | |
404 | * the functionality provided here | |
405 | */ | |
406 | ||
407 | /**************************************************************/ | |
01ebd063 | 408 | #if 0 /* temporary disable till we add real remove station */ |
b481de9c ZY |
409 | static u8 iwl_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap) |
410 | { | |
411 | int index = IWL_INVALID_STATION; | |
412 | int i; | |
413 | unsigned long flags; | |
414 | ||
415 | spin_lock_irqsave(&priv->sta_lock, flags); | |
416 | ||
417 | if (is_ap) | |
418 | index = IWL_AP_ID; | |
419 | else if (is_broadcast_ether_addr(addr)) | |
420 | index = priv->hw_setting.bcast_sta_id; | |
421 | else | |
422 | for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) | |
423 | if (priv->stations[i].used && | |
424 | !compare_ether_addr(priv->stations[i].sta.sta.addr, | |
425 | addr)) { | |
426 | index = i; | |
427 | break; | |
428 | } | |
429 | ||
430 | if (unlikely(index == IWL_INVALID_STATION)) | |
431 | goto out; | |
432 | ||
433 | if (priv->stations[index].used) { | |
434 | priv->stations[index].used = 0; | |
435 | priv->num_stations--; | |
436 | } | |
437 | ||
438 | BUG_ON(priv->num_stations < 0); | |
439 | ||
440 | out: | |
441 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
442 | return 0; | |
443 | } | |
556f8db7 | 444 | #endif |
b481de9c ZY |
445 | static void iwl_clear_stations_table(struct iwl_priv *priv) |
446 | { | |
447 | unsigned long flags; | |
448 | ||
449 | spin_lock_irqsave(&priv->sta_lock, flags); | |
450 | ||
451 | priv->num_stations = 0; | |
452 | memset(priv->stations, 0, sizeof(priv->stations)); | |
453 | ||
454 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
455 | } | |
456 | ||
457 | ||
458 | u8 iwl_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap, u8 flags) | |
459 | { | |
460 | int i; | |
461 | int index = IWL_INVALID_STATION; | |
462 | struct iwl_station_entry *station; | |
463 | unsigned long flags_spin; | |
0795af57 | 464 | DECLARE_MAC_BUF(mac); |
c14c521e | 465 | u8 rate; |
b481de9c ZY |
466 | |
467 | spin_lock_irqsave(&priv->sta_lock, flags_spin); | |
468 | if (is_ap) | |
469 | index = IWL_AP_ID; | |
470 | else if (is_broadcast_ether_addr(addr)) | |
471 | index = priv->hw_setting.bcast_sta_id; | |
472 | else | |
473 | for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) { | |
474 | if (!compare_ether_addr(priv->stations[i].sta.sta.addr, | |
475 | addr)) { | |
476 | index = i; | |
477 | break; | |
478 | } | |
479 | ||
480 | if (!priv->stations[i].used && | |
481 | index == IWL_INVALID_STATION) | |
482 | index = i; | |
483 | } | |
484 | ||
01ebd063 | 485 | /* These two conditions has the same outcome but keep them separate |
b481de9c ZY |
486 | since they have different meaning */ |
487 | if (unlikely(index == IWL_INVALID_STATION)) { | |
488 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); | |
489 | return index; | |
490 | } | |
491 | ||
492 | if (priv->stations[index].used && | |
493 | !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) { | |
494 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); | |
495 | return index; | |
496 | } | |
497 | ||
0795af57 | 498 | IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr)); |
b481de9c ZY |
499 | station = &priv->stations[index]; |
500 | station->used = 1; | |
501 | priv->num_stations++; | |
502 | ||
503 | memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd)); | |
504 | memcpy(station->sta.sta.addr, addr, ETH_ALEN); | |
505 | station->sta.mode = 0; | |
506 | station->sta.sta.sta_id = index; | |
507 | station->sta.station_flags = 0; | |
508 | ||
c14c521e ZY |
509 | rate = (priv->phymode == MODE_IEEE80211A) ? IWL_RATE_6M_PLCP : |
510 | IWL_RATE_1M_PLCP | priv->hw_setting.cck_flag; | |
511 | ||
512 | /* Turn on both antennas for the station... */ | |
513 | station->sta.rate_n_flags = | |
514 | iwl_hw_set_rate_n_flags(rate, RATE_MCS_ANT_AB_MSK); | |
515 | station->current_rate.rate_n_flags = | |
516 | le16_to_cpu(station->sta.rate_n_flags); | |
517 | ||
b481de9c ZY |
518 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); |
519 | iwl_send_add_station(priv, &station->sta, flags); | |
520 | return index; | |
521 | ||
522 | } | |
523 | ||
524 | /*************** DRIVER STATUS FUNCTIONS *****/ | |
525 | ||
526 | static inline int iwl_is_ready(struct iwl_priv *priv) | |
527 | { | |
528 | /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are | |
529 | * set but EXIT_PENDING is not */ | |
530 | return test_bit(STATUS_READY, &priv->status) && | |
531 | test_bit(STATUS_GEO_CONFIGURED, &priv->status) && | |
532 | !test_bit(STATUS_EXIT_PENDING, &priv->status); | |
533 | } | |
534 | ||
535 | static inline int iwl_is_alive(struct iwl_priv *priv) | |
536 | { | |
537 | return test_bit(STATUS_ALIVE, &priv->status); | |
538 | } | |
539 | ||
540 | static inline int iwl_is_init(struct iwl_priv *priv) | |
541 | { | |
542 | return test_bit(STATUS_INIT, &priv->status); | |
543 | } | |
544 | ||
545 | static inline int iwl_is_rfkill(struct iwl_priv *priv) | |
546 | { | |
547 | return test_bit(STATUS_RF_KILL_HW, &priv->status) || | |
548 | test_bit(STATUS_RF_KILL_SW, &priv->status); | |
549 | } | |
550 | ||
551 | static inline int iwl_is_ready_rf(struct iwl_priv *priv) | |
552 | { | |
553 | ||
554 | if (iwl_is_rfkill(priv)) | |
555 | return 0; | |
556 | ||
557 | return iwl_is_ready(priv); | |
558 | } | |
559 | ||
560 | /*************** HOST COMMAND QUEUE FUNCTIONS *****/ | |
561 | ||
562 | #define IWL_CMD(x) case x : return #x | |
563 | ||
564 | static const char *get_cmd_string(u8 cmd) | |
565 | { | |
566 | switch (cmd) { | |
567 | IWL_CMD(REPLY_ALIVE); | |
568 | IWL_CMD(REPLY_ERROR); | |
569 | IWL_CMD(REPLY_RXON); | |
570 | IWL_CMD(REPLY_RXON_ASSOC); | |
571 | IWL_CMD(REPLY_QOS_PARAM); | |
572 | IWL_CMD(REPLY_RXON_TIMING); | |
573 | IWL_CMD(REPLY_ADD_STA); | |
574 | IWL_CMD(REPLY_REMOVE_STA); | |
575 | IWL_CMD(REPLY_REMOVE_ALL_STA); | |
576 | IWL_CMD(REPLY_3945_RX); | |
577 | IWL_CMD(REPLY_TX); | |
578 | IWL_CMD(REPLY_RATE_SCALE); | |
579 | IWL_CMD(REPLY_LEDS_CMD); | |
580 | IWL_CMD(REPLY_TX_LINK_QUALITY_CMD); | |
581 | IWL_CMD(RADAR_NOTIFICATION); | |
582 | IWL_CMD(REPLY_QUIET_CMD); | |
583 | IWL_CMD(REPLY_CHANNEL_SWITCH); | |
584 | IWL_CMD(CHANNEL_SWITCH_NOTIFICATION); | |
585 | IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD); | |
586 | IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION); | |
587 | IWL_CMD(POWER_TABLE_CMD); | |
588 | IWL_CMD(PM_SLEEP_NOTIFICATION); | |
589 | IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC); | |
590 | IWL_CMD(REPLY_SCAN_CMD); | |
591 | IWL_CMD(REPLY_SCAN_ABORT_CMD); | |
592 | IWL_CMD(SCAN_START_NOTIFICATION); | |
593 | IWL_CMD(SCAN_RESULTS_NOTIFICATION); | |
594 | IWL_CMD(SCAN_COMPLETE_NOTIFICATION); | |
595 | IWL_CMD(BEACON_NOTIFICATION); | |
596 | IWL_CMD(REPLY_TX_BEACON); | |
597 | IWL_CMD(WHO_IS_AWAKE_NOTIFICATION); | |
598 | IWL_CMD(QUIET_NOTIFICATION); | |
599 | IWL_CMD(REPLY_TX_PWR_TABLE_CMD); | |
600 | IWL_CMD(MEASURE_ABORT_NOTIFICATION); | |
601 | IWL_CMD(REPLY_BT_CONFIG); | |
602 | IWL_CMD(REPLY_STATISTICS_CMD); | |
603 | IWL_CMD(STATISTICS_NOTIFICATION); | |
604 | IWL_CMD(REPLY_CARD_STATE_CMD); | |
605 | IWL_CMD(CARD_STATE_NOTIFICATION); | |
606 | IWL_CMD(MISSED_BEACONS_NOTIFICATION); | |
607 | default: | |
608 | return "UNKNOWN"; | |
609 | ||
610 | } | |
611 | } | |
612 | ||
613 | #define HOST_COMPLETE_TIMEOUT (HZ / 2) | |
614 | ||
615 | /** | |
616 | * iwl_enqueue_hcmd - enqueue a uCode command | |
617 | * @priv: device private data point | |
618 | * @cmd: a point to the ucode command structure | |
619 | * | |
620 | * The function returns < 0 values to indicate the operation is | |
621 | * failed. On success, it turns the index (> 0) of command in the | |
622 | * command queue. | |
623 | */ | |
624 | static int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd) | |
625 | { | |
626 | struct iwl_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM]; | |
627 | struct iwl_queue *q = &txq->q; | |
628 | struct iwl_tfd_frame *tfd; | |
629 | u32 *control_flags; | |
630 | struct iwl_cmd *out_cmd; | |
631 | u32 idx; | |
632 | u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr)); | |
633 | dma_addr_t phys_addr; | |
634 | int pad; | |
635 | u16 count; | |
636 | int ret; | |
637 | unsigned long flags; | |
638 | ||
639 | /* If any of the command structures end up being larger than | |
640 | * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then | |
641 | * we will need to increase the size of the TFD entries */ | |
642 | BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) && | |
643 | !(cmd->meta.flags & CMD_SIZE_HUGE)); | |
644 | ||
645 | if (iwl_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) { | |
646 | IWL_ERROR("No space for Tx\n"); | |
647 | return -ENOSPC; | |
648 | } | |
649 | ||
650 | spin_lock_irqsave(&priv->hcmd_lock, flags); | |
651 | ||
652 | tfd = &txq->bd[q->first_empty]; | |
653 | memset(tfd, 0, sizeof(*tfd)); | |
654 | ||
655 | control_flags = (u32 *) tfd; | |
656 | ||
657 | idx = get_cmd_index(q, q->first_empty, cmd->meta.flags & CMD_SIZE_HUGE); | |
658 | out_cmd = &txq->cmd[idx]; | |
659 | ||
660 | out_cmd->hdr.cmd = cmd->id; | |
661 | memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta)); | |
662 | memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len); | |
663 | ||
664 | /* At this point, the out_cmd now has all of the incoming cmd | |
665 | * information */ | |
666 | ||
667 | out_cmd->hdr.flags = 0; | |
668 | out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) | | |
669 | INDEX_TO_SEQ(q->first_empty)); | |
670 | if (out_cmd->meta.flags & CMD_SIZE_HUGE) | |
671 | out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME); | |
672 | ||
673 | phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx + | |
674 | offsetof(struct iwl_cmd, hdr); | |
675 | iwl_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size); | |
676 | ||
677 | pad = U32_PAD(cmd->len); | |
678 | count = TFD_CTL_COUNT_GET(*control_flags); | |
679 | *control_flags = TFD_CTL_COUNT_SET(count) | TFD_CTL_PAD_SET(pad); | |
680 | ||
681 | IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, " | |
682 | "%d bytes at %d[%d]:%d\n", | |
683 | get_cmd_string(out_cmd->hdr.cmd), | |
684 | out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence), | |
685 | fix_size, q->first_empty, idx, IWL_CMD_QUEUE_NUM); | |
686 | ||
687 | txq->need_update = 1; | |
688 | q->first_empty = iwl_queue_inc_wrap(q->first_empty, q->n_bd); | |
689 | ret = iwl_tx_queue_update_write_ptr(priv, txq); | |
690 | ||
691 | spin_unlock_irqrestore(&priv->hcmd_lock, flags); | |
692 | return ret ? ret : idx; | |
693 | } | |
694 | ||
695 | int iwl_send_cmd_async(struct iwl_priv *priv, struct iwl_host_cmd *cmd) | |
696 | { | |
697 | int ret; | |
698 | ||
699 | BUG_ON(!(cmd->meta.flags & CMD_ASYNC)); | |
700 | ||
701 | /* An asynchronous command can not expect an SKB to be set. */ | |
702 | BUG_ON(cmd->meta.flags & CMD_WANT_SKB); | |
703 | ||
704 | /* An asynchronous command MUST have a callback. */ | |
705 | BUG_ON(!cmd->meta.u.callback); | |
706 | ||
707 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
708 | return -EBUSY; | |
709 | ||
710 | ret = iwl_enqueue_hcmd(priv, cmd); | |
711 | if (ret < 0) { | |
712 | IWL_ERROR("Error sending %s: iwl_enqueue_hcmd failed: %d\n", | |
713 | get_cmd_string(cmd->id), ret); | |
714 | return ret; | |
715 | } | |
716 | return 0; | |
717 | } | |
718 | ||
719 | int iwl_send_cmd_sync(struct iwl_priv *priv, struct iwl_host_cmd *cmd) | |
720 | { | |
721 | int cmd_idx; | |
722 | int ret; | |
723 | static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */ | |
724 | ||
725 | BUG_ON(cmd->meta.flags & CMD_ASYNC); | |
726 | ||
727 | /* A synchronous command can not have a callback set. */ | |
728 | BUG_ON(cmd->meta.u.callback != NULL); | |
729 | ||
730 | if (atomic_xchg(&entry, 1)) { | |
731 | IWL_ERROR("Error sending %s: Already sending a host command\n", | |
732 | get_cmd_string(cmd->id)); | |
733 | return -EBUSY; | |
734 | } | |
735 | ||
736 | set_bit(STATUS_HCMD_ACTIVE, &priv->status); | |
737 | ||
738 | if (cmd->meta.flags & CMD_WANT_SKB) | |
739 | cmd->meta.source = &cmd->meta; | |
740 | ||
741 | cmd_idx = iwl_enqueue_hcmd(priv, cmd); | |
742 | if (cmd_idx < 0) { | |
743 | ret = cmd_idx; | |
744 | IWL_ERROR("Error sending %s: iwl_enqueue_hcmd failed: %d\n", | |
745 | get_cmd_string(cmd->id), ret); | |
746 | goto out; | |
747 | } | |
748 | ||
749 | ret = wait_event_interruptible_timeout(priv->wait_command_queue, | |
750 | !test_bit(STATUS_HCMD_ACTIVE, &priv->status), | |
751 | HOST_COMPLETE_TIMEOUT); | |
752 | if (!ret) { | |
753 | if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) { | |
754 | IWL_ERROR("Error sending %s: time out after %dms.\n", | |
755 | get_cmd_string(cmd->id), | |
756 | jiffies_to_msecs(HOST_COMPLETE_TIMEOUT)); | |
757 | ||
758 | clear_bit(STATUS_HCMD_ACTIVE, &priv->status); | |
759 | ret = -ETIMEDOUT; | |
760 | goto cancel; | |
761 | } | |
762 | } | |
763 | ||
764 | if (test_bit(STATUS_RF_KILL_HW, &priv->status)) { | |
765 | IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n", | |
766 | get_cmd_string(cmd->id)); | |
767 | ret = -ECANCELED; | |
768 | goto fail; | |
769 | } | |
770 | if (test_bit(STATUS_FW_ERROR, &priv->status)) { | |
771 | IWL_DEBUG_INFO("Command %s failed: FW Error\n", | |
772 | get_cmd_string(cmd->id)); | |
773 | ret = -EIO; | |
774 | goto fail; | |
775 | } | |
776 | if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) { | |
777 | IWL_ERROR("Error: Response NULL in '%s'\n", | |
778 | get_cmd_string(cmd->id)); | |
779 | ret = -EIO; | |
780 | goto out; | |
781 | } | |
782 | ||
783 | ret = 0; | |
784 | goto out; | |
785 | ||
786 | cancel: | |
787 | if (cmd->meta.flags & CMD_WANT_SKB) { | |
788 | struct iwl_cmd *qcmd; | |
789 | ||
790 | /* Cancel the CMD_WANT_SKB flag for the cmd in the | |
791 | * TX cmd queue. Otherwise in case the cmd comes | |
792 | * in later, it will possibly set an invalid | |
793 | * address (cmd->meta.source). */ | |
794 | qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx]; | |
795 | qcmd->meta.flags &= ~CMD_WANT_SKB; | |
796 | } | |
797 | fail: | |
798 | if (cmd->meta.u.skb) { | |
799 | dev_kfree_skb_any(cmd->meta.u.skb); | |
800 | cmd->meta.u.skb = NULL; | |
801 | } | |
802 | out: | |
803 | atomic_set(&entry, 0); | |
804 | return ret; | |
805 | } | |
806 | ||
807 | int iwl_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd) | |
808 | { | |
809 | /* A command can not be asynchronous AND expect an SKB to be set. */ | |
810 | BUG_ON((cmd->meta.flags & CMD_ASYNC) && | |
811 | (cmd->meta.flags & CMD_WANT_SKB)); | |
812 | ||
813 | if (cmd->meta.flags & CMD_ASYNC) | |
814 | return iwl_send_cmd_async(priv, cmd); | |
815 | ||
816 | return iwl_send_cmd_sync(priv, cmd); | |
817 | } | |
818 | ||
819 | int iwl_send_cmd_pdu(struct iwl_priv *priv, u8 id, u16 len, const void *data) | |
820 | { | |
821 | struct iwl_host_cmd cmd = { | |
822 | .id = id, | |
823 | .len = len, | |
824 | .data = data, | |
825 | }; | |
826 | ||
827 | return iwl_send_cmd_sync(priv, &cmd); | |
828 | } | |
829 | ||
830 | static int __must_check iwl_send_cmd_u32(struct iwl_priv *priv, u8 id, u32 val) | |
831 | { | |
832 | struct iwl_host_cmd cmd = { | |
833 | .id = id, | |
834 | .len = sizeof(val), | |
835 | .data = &val, | |
836 | }; | |
837 | ||
838 | return iwl_send_cmd_sync(priv, &cmd); | |
839 | } | |
840 | ||
841 | int iwl_send_statistics_request(struct iwl_priv *priv) | |
842 | { | |
843 | return iwl_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0); | |
844 | } | |
845 | ||
b481de9c ZY |
846 | /** |
847 | * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON | |
848 | * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz | |
849 | * @channel: Any channel valid for the requested phymode | |
850 | ||
851 | * In addition to setting the staging RXON, priv->phymode is also set. | |
852 | * | |
853 | * NOTE: Does not commit to the hardware; it sets appropriate bit fields | |
854 | * in the staging RXON flag structure based on the phymode | |
855 | */ | |
856 | static int iwl_set_rxon_channel(struct iwl_priv *priv, u8 phymode, u16 channel) | |
857 | { | |
858 | if (!iwl_get_channel_info(priv, phymode, channel)) { | |
859 | IWL_DEBUG_INFO("Could not set channel to %d [%d]\n", | |
860 | channel, phymode); | |
861 | return -EINVAL; | |
862 | } | |
863 | ||
864 | if ((le16_to_cpu(priv->staging_rxon.channel) == channel) && | |
865 | (priv->phymode == phymode)) | |
866 | return 0; | |
867 | ||
868 | priv->staging_rxon.channel = cpu_to_le16(channel); | |
869 | if (phymode == MODE_IEEE80211A) | |
870 | priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK; | |
871 | else | |
872 | priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK; | |
873 | ||
874 | priv->phymode = phymode; | |
875 | ||
876 | IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, phymode); | |
877 | ||
878 | return 0; | |
879 | } | |
880 | ||
881 | /** | |
882 | * iwl_check_rxon_cmd - validate RXON structure is valid | |
883 | * | |
884 | * NOTE: This is really only useful during development and can eventually | |
885 | * be #ifdef'd out once the driver is stable and folks aren't actively | |
886 | * making changes | |
887 | */ | |
888 | static int iwl_check_rxon_cmd(struct iwl_rxon_cmd *rxon) | |
889 | { | |
890 | int error = 0; | |
891 | int counter = 1; | |
892 | ||
893 | if (rxon->flags & RXON_FLG_BAND_24G_MSK) { | |
894 | error |= le32_to_cpu(rxon->flags & | |
895 | (RXON_FLG_TGJ_NARROW_BAND_MSK | | |
896 | RXON_FLG_RADAR_DETECT_MSK)); | |
897 | if (error) | |
898 | IWL_WARNING("check 24G fields %d | %d\n", | |
899 | counter++, error); | |
900 | } else { | |
901 | error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ? | |
902 | 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK); | |
903 | if (error) | |
904 | IWL_WARNING("check 52 fields %d | %d\n", | |
905 | counter++, error); | |
906 | error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK); | |
907 | if (error) | |
908 | IWL_WARNING("check 52 CCK %d | %d\n", | |
909 | counter++, error); | |
910 | } | |
911 | error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1; | |
912 | if (error) | |
913 | IWL_WARNING("check mac addr %d | %d\n", counter++, error); | |
914 | ||
915 | /* make sure basic rates 6Mbps and 1Mbps are supported */ | |
916 | error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) && | |
917 | ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0)); | |
918 | if (error) | |
919 | IWL_WARNING("check basic rate %d | %d\n", counter++, error); | |
920 | ||
921 | error |= (le16_to_cpu(rxon->assoc_id) > 2007); | |
922 | if (error) | |
923 | IWL_WARNING("check assoc id %d | %d\n", counter++, error); | |
924 | ||
925 | error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) | |
926 | == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)); | |
927 | if (error) | |
928 | IWL_WARNING("check CCK and short slot %d | %d\n", | |
929 | counter++, error); | |
930 | ||
931 | error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) | |
932 | == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)); | |
933 | if (error) | |
934 | IWL_WARNING("check CCK & auto detect %d | %d\n", | |
935 | counter++, error); | |
936 | ||
937 | error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK | | |
938 | RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK); | |
939 | if (error) | |
940 | IWL_WARNING("check TGG and auto detect %d | %d\n", | |
941 | counter++, error); | |
942 | ||
943 | if ((rxon->flags & RXON_FLG_DIS_DIV_MSK)) | |
944 | error |= ((rxon->flags & (RXON_FLG_ANT_B_MSK | | |
945 | RXON_FLG_ANT_A_MSK)) == 0); | |
946 | if (error) | |
947 | IWL_WARNING("check antenna %d %d\n", counter++, error); | |
948 | ||
949 | if (error) | |
950 | IWL_WARNING("Tuning to channel %d\n", | |
951 | le16_to_cpu(rxon->channel)); | |
952 | ||
953 | if (error) { | |
954 | IWL_ERROR("Not a valid iwl_rxon_assoc_cmd field values\n"); | |
955 | return -1; | |
956 | } | |
957 | return 0; | |
958 | } | |
959 | ||
960 | /** | |
961 | * iwl_full_rxon_required - determine if RXON_ASSOC can be used in RXON commit | |
01ebd063 | 962 | * @priv: staging_rxon is compared to active_rxon |
b481de9c ZY |
963 | * |
964 | * If the RXON structure is changing sufficient to require a new | |
965 | * tune or to clear and reset the RXON_FILTER_ASSOC_MSK then return 1 | |
966 | * to indicate a new tune is required. | |
967 | */ | |
968 | static int iwl_full_rxon_required(struct iwl_priv *priv) | |
969 | { | |
970 | ||
971 | /* These items are only settable from the full RXON command */ | |
972 | if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) || | |
973 | compare_ether_addr(priv->staging_rxon.bssid_addr, | |
974 | priv->active_rxon.bssid_addr) || | |
975 | compare_ether_addr(priv->staging_rxon.node_addr, | |
976 | priv->active_rxon.node_addr) || | |
977 | compare_ether_addr(priv->staging_rxon.wlap_bssid_addr, | |
978 | priv->active_rxon.wlap_bssid_addr) || | |
979 | (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) || | |
980 | (priv->staging_rxon.channel != priv->active_rxon.channel) || | |
981 | (priv->staging_rxon.air_propagation != | |
982 | priv->active_rxon.air_propagation) || | |
983 | (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id)) | |
984 | return 1; | |
985 | ||
986 | /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can | |
987 | * be updated with the RXON_ASSOC command -- however only some | |
988 | * flag transitions are allowed using RXON_ASSOC */ | |
989 | ||
990 | /* Check if we are not switching bands */ | |
991 | if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) != | |
992 | (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)) | |
993 | return 1; | |
994 | ||
995 | /* Check if we are switching association toggle */ | |
996 | if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) != | |
997 | (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) | |
998 | return 1; | |
999 | ||
1000 | return 0; | |
1001 | } | |
1002 | ||
1003 | static int iwl_send_rxon_assoc(struct iwl_priv *priv) | |
1004 | { | |
1005 | int rc = 0; | |
1006 | struct iwl_rx_packet *res = NULL; | |
1007 | struct iwl_rxon_assoc_cmd rxon_assoc; | |
1008 | struct iwl_host_cmd cmd = { | |
1009 | .id = REPLY_RXON_ASSOC, | |
1010 | .len = sizeof(rxon_assoc), | |
1011 | .meta.flags = CMD_WANT_SKB, | |
1012 | .data = &rxon_assoc, | |
1013 | }; | |
1014 | const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon; | |
1015 | const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon; | |
1016 | ||
1017 | if ((rxon1->flags == rxon2->flags) && | |
1018 | (rxon1->filter_flags == rxon2->filter_flags) && | |
1019 | (rxon1->cck_basic_rates == rxon2->cck_basic_rates) && | |
1020 | (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) { | |
1021 | IWL_DEBUG_INFO("Using current RXON_ASSOC. Not resending.\n"); | |
1022 | return 0; | |
1023 | } | |
1024 | ||
1025 | rxon_assoc.flags = priv->staging_rxon.flags; | |
1026 | rxon_assoc.filter_flags = priv->staging_rxon.filter_flags; | |
1027 | rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates; | |
1028 | rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates; | |
1029 | rxon_assoc.reserved = 0; | |
1030 | ||
1031 | rc = iwl_send_cmd_sync(priv, &cmd); | |
1032 | if (rc) | |
1033 | return rc; | |
1034 | ||
1035 | res = (struct iwl_rx_packet *)cmd.meta.u.skb->data; | |
1036 | if (res->hdr.flags & IWL_CMD_FAILED_MSK) { | |
1037 | IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n"); | |
1038 | rc = -EIO; | |
1039 | } | |
1040 | ||
1041 | priv->alloc_rxb_skb--; | |
1042 | dev_kfree_skb_any(cmd.meta.u.skb); | |
1043 | ||
1044 | return rc; | |
1045 | } | |
1046 | ||
1047 | /** | |
1048 | * iwl_commit_rxon - commit staging_rxon to hardware | |
1049 | * | |
01ebd063 | 1050 | * The RXON command in staging_rxon is committed to the hardware and |
b481de9c ZY |
1051 | * the active_rxon structure is updated with the new data. This |
1052 | * function correctly transitions out of the RXON_ASSOC_MSK state if | |
1053 | * a HW tune is required based on the RXON structure changes. | |
1054 | */ | |
1055 | static int iwl_commit_rxon(struct iwl_priv *priv) | |
1056 | { | |
1057 | /* cast away the const for active_rxon in this function */ | |
1058 | struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon; | |
1059 | int rc = 0; | |
0795af57 | 1060 | DECLARE_MAC_BUF(mac); |
b481de9c ZY |
1061 | |
1062 | if (!iwl_is_alive(priv)) | |
1063 | return -1; | |
1064 | ||
1065 | /* always get timestamp with Rx frame */ | |
1066 | priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK; | |
1067 | ||
1068 | /* select antenna */ | |
1069 | priv->staging_rxon.flags &= | |
1070 | ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK); | |
1071 | priv->staging_rxon.flags |= iwl3945_get_antenna_flags(priv); | |
1072 | ||
1073 | rc = iwl_check_rxon_cmd(&priv->staging_rxon); | |
1074 | if (rc) { | |
1075 | IWL_ERROR("Invalid RXON configuration. Not committing.\n"); | |
1076 | return -EINVAL; | |
1077 | } | |
1078 | ||
1079 | /* If we don't need to send a full RXON, we can use | |
1080 | * iwl_rxon_assoc_cmd which is used to reconfigure filter | |
1081 | * and other flags for the current radio configuration. */ | |
1082 | if (!iwl_full_rxon_required(priv)) { | |
1083 | rc = iwl_send_rxon_assoc(priv); | |
1084 | if (rc) { | |
1085 | IWL_ERROR("Error setting RXON_ASSOC " | |
1086 | "configuration (%d).\n", rc); | |
1087 | return rc; | |
1088 | } | |
1089 | ||
1090 | memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon)); | |
1091 | ||
1092 | return 0; | |
1093 | } | |
1094 | ||
1095 | /* If we are currently associated and the new config requires | |
1096 | * an RXON_ASSOC and the new config wants the associated mask enabled, | |
1097 | * we must clear the associated from the active configuration | |
1098 | * before we apply the new config */ | |
1099 | if (iwl_is_associated(priv) && | |
1100 | (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) { | |
1101 | IWL_DEBUG_INFO("Toggling associated bit on current RXON\n"); | |
1102 | active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK; | |
1103 | ||
1104 | rc = iwl_send_cmd_pdu(priv, REPLY_RXON, | |
1105 | sizeof(struct iwl_rxon_cmd), | |
1106 | &priv->active_rxon); | |
1107 | ||
1108 | /* If the mask clearing failed then we set | |
1109 | * active_rxon back to what it was previously */ | |
1110 | if (rc) { | |
1111 | active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK; | |
1112 | IWL_ERROR("Error clearing ASSOC_MSK on current " | |
1113 | "configuration (%d).\n", rc); | |
1114 | return rc; | |
1115 | } | |
b481de9c ZY |
1116 | } |
1117 | ||
1118 | IWL_DEBUG_INFO("Sending RXON\n" | |
1119 | "* with%s RXON_FILTER_ASSOC_MSK\n" | |
1120 | "* channel = %d\n" | |
0795af57 | 1121 | "* bssid = %s\n", |
b481de9c ZY |
1122 | ((priv->staging_rxon.filter_flags & |
1123 | RXON_FILTER_ASSOC_MSK) ? "" : "out"), | |
1124 | le16_to_cpu(priv->staging_rxon.channel), | |
0795af57 | 1125 | print_mac(mac, priv->staging_rxon.bssid_addr)); |
b481de9c ZY |
1126 | |
1127 | /* Apply the new configuration */ | |
1128 | rc = iwl_send_cmd_pdu(priv, REPLY_RXON, | |
1129 | sizeof(struct iwl_rxon_cmd), &priv->staging_rxon); | |
1130 | if (rc) { | |
1131 | IWL_ERROR("Error setting new configuration (%d).\n", rc); | |
1132 | return rc; | |
1133 | } | |
1134 | ||
1135 | memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon)); | |
1136 | ||
556f8db7 ZY |
1137 | iwl_clear_stations_table(priv); |
1138 | ||
b481de9c ZY |
1139 | /* If we issue a new RXON command which required a tune then we must |
1140 | * send a new TXPOWER command or we won't be able to Tx any frames */ | |
1141 | rc = iwl_hw_reg_send_txpower(priv); | |
1142 | if (rc) { | |
1143 | IWL_ERROR("Error setting Tx power (%d).\n", rc); | |
1144 | return rc; | |
1145 | } | |
1146 | ||
1147 | /* Add the broadcast address so we can send broadcast frames */ | |
556f8db7 | 1148 | if (iwl_add_station(priv, BROADCAST_ADDR, 0, 0) == |
b481de9c ZY |
1149 | IWL_INVALID_STATION) { |
1150 | IWL_ERROR("Error adding BROADCAST address for transmit.\n"); | |
1151 | return -EIO; | |
1152 | } | |
1153 | ||
1154 | /* If we have set the ASSOC_MSK and we are in BSS mode then | |
1155 | * add the IWL_AP_ID to the station rate table */ | |
1156 | if (iwl_is_associated(priv) && | |
1157 | (priv->iw_mode == IEEE80211_IF_TYPE_STA)) | |
556f8db7 | 1158 | if (iwl_add_station(priv, priv->active_rxon.bssid_addr, 1, 0) |
b481de9c ZY |
1159 | == IWL_INVALID_STATION) { |
1160 | IWL_ERROR("Error adding AP address for transmit.\n"); | |
1161 | return -EIO; | |
1162 | } | |
1163 | ||
1164 | /* Init the hardware's rate fallback order based on the | |
1165 | * phymode */ | |
1166 | rc = iwl3945_init_hw_rate_table(priv); | |
1167 | if (rc) { | |
1168 | IWL_ERROR("Error setting HW rate table: %02X\n", rc); | |
1169 | return -EIO; | |
1170 | } | |
1171 | ||
1172 | return 0; | |
1173 | } | |
1174 | ||
1175 | static int iwl_send_bt_config(struct iwl_priv *priv) | |
1176 | { | |
1177 | struct iwl_bt_cmd bt_cmd = { | |
1178 | .flags = 3, | |
1179 | .lead_time = 0xAA, | |
1180 | .max_kill = 1, | |
1181 | .kill_ack_mask = 0, | |
1182 | .kill_cts_mask = 0, | |
1183 | }; | |
1184 | ||
1185 | return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG, | |
1186 | sizeof(struct iwl_bt_cmd), &bt_cmd); | |
1187 | } | |
1188 | ||
1189 | static int iwl_send_scan_abort(struct iwl_priv *priv) | |
1190 | { | |
1191 | int rc = 0; | |
1192 | struct iwl_rx_packet *res; | |
1193 | struct iwl_host_cmd cmd = { | |
1194 | .id = REPLY_SCAN_ABORT_CMD, | |
1195 | .meta.flags = CMD_WANT_SKB, | |
1196 | }; | |
1197 | ||
1198 | /* If there isn't a scan actively going on in the hardware | |
1199 | * then we are in between scan bands and not actually | |
1200 | * actively scanning, so don't send the abort command */ | |
1201 | if (!test_bit(STATUS_SCAN_HW, &priv->status)) { | |
1202 | clear_bit(STATUS_SCAN_ABORTING, &priv->status); | |
1203 | return 0; | |
1204 | } | |
1205 | ||
1206 | rc = iwl_send_cmd_sync(priv, &cmd); | |
1207 | if (rc) { | |
1208 | clear_bit(STATUS_SCAN_ABORTING, &priv->status); | |
1209 | return rc; | |
1210 | } | |
1211 | ||
1212 | res = (struct iwl_rx_packet *)cmd.meta.u.skb->data; | |
1213 | if (res->u.status != CAN_ABORT_STATUS) { | |
1214 | /* The scan abort will return 1 for success or | |
1215 | * 2 for "failure". A failure condition can be | |
1216 | * due to simply not being in an active scan which | |
1217 | * can occur if we send the scan abort before we | |
1218 | * the microcode has notified us that a scan is | |
1219 | * completed. */ | |
1220 | IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status); | |
1221 | clear_bit(STATUS_SCAN_ABORTING, &priv->status); | |
1222 | clear_bit(STATUS_SCAN_HW, &priv->status); | |
1223 | } | |
1224 | ||
1225 | dev_kfree_skb_any(cmd.meta.u.skb); | |
1226 | ||
1227 | return rc; | |
1228 | } | |
1229 | ||
1230 | static int iwl_card_state_sync_callback(struct iwl_priv *priv, | |
1231 | struct iwl_cmd *cmd, | |
1232 | struct sk_buff *skb) | |
1233 | { | |
1234 | return 1; | |
1235 | } | |
1236 | ||
1237 | /* | |
1238 | * CARD_STATE_CMD | |
1239 | * | |
1240 | * Use: Sets the internal card state to enable, disable, or halt | |
1241 | * | |
1242 | * When in the 'enable' state the card operates as normal. | |
1243 | * When in the 'disable' state, the card enters into a low power mode. | |
1244 | * When in the 'halt' state, the card is shut down and must be fully | |
1245 | * restarted to come back on. | |
1246 | */ | |
1247 | static int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag) | |
1248 | { | |
1249 | struct iwl_host_cmd cmd = { | |
1250 | .id = REPLY_CARD_STATE_CMD, | |
1251 | .len = sizeof(u32), | |
1252 | .data = &flags, | |
1253 | .meta.flags = meta_flag, | |
1254 | }; | |
1255 | ||
1256 | if (meta_flag & CMD_ASYNC) | |
1257 | cmd.meta.u.callback = iwl_card_state_sync_callback; | |
1258 | ||
1259 | return iwl_send_cmd(priv, &cmd); | |
1260 | } | |
1261 | ||
1262 | static int iwl_add_sta_sync_callback(struct iwl_priv *priv, | |
1263 | struct iwl_cmd *cmd, struct sk_buff *skb) | |
1264 | { | |
1265 | struct iwl_rx_packet *res = NULL; | |
1266 | ||
1267 | if (!skb) { | |
1268 | IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n"); | |
1269 | return 1; | |
1270 | } | |
1271 | ||
1272 | res = (struct iwl_rx_packet *)skb->data; | |
1273 | if (res->hdr.flags & IWL_CMD_FAILED_MSK) { | |
1274 | IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n", | |
1275 | res->hdr.flags); | |
1276 | return 1; | |
1277 | } | |
1278 | ||
1279 | switch (res->u.add_sta.status) { | |
1280 | case ADD_STA_SUCCESS_MSK: | |
1281 | break; | |
1282 | default: | |
1283 | break; | |
1284 | } | |
1285 | ||
1286 | /* We didn't cache the SKB; let the caller free it */ | |
1287 | return 1; | |
1288 | } | |
1289 | ||
1290 | int iwl_send_add_station(struct iwl_priv *priv, | |
1291 | struct iwl_addsta_cmd *sta, u8 flags) | |
1292 | { | |
1293 | struct iwl_rx_packet *res = NULL; | |
1294 | int rc = 0; | |
1295 | struct iwl_host_cmd cmd = { | |
1296 | .id = REPLY_ADD_STA, | |
1297 | .len = sizeof(struct iwl_addsta_cmd), | |
1298 | .meta.flags = flags, | |
1299 | .data = sta, | |
1300 | }; | |
1301 | ||
1302 | if (flags & CMD_ASYNC) | |
1303 | cmd.meta.u.callback = iwl_add_sta_sync_callback; | |
1304 | else | |
1305 | cmd.meta.flags |= CMD_WANT_SKB; | |
1306 | ||
1307 | rc = iwl_send_cmd(priv, &cmd); | |
1308 | ||
1309 | if (rc || (flags & CMD_ASYNC)) | |
1310 | return rc; | |
1311 | ||
1312 | res = (struct iwl_rx_packet *)cmd.meta.u.skb->data; | |
1313 | if (res->hdr.flags & IWL_CMD_FAILED_MSK) { | |
1314 | IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n", | |
1315 | res->hdr.flags); | |
1316 | rc = -EIO; | |
1317 | } | |
1318 | ||
1319 | if (rc == 0) { | |
1320 | switch (res->u.add_sta.status) { | |
1321 | case ADD_STA_SUCCESS_MSK: | |
1322 | IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n"); | |
1323 | break; | |
1324 | default: | |
1325 | rc = -EIO; | |
1326 | IWL_WARNING("REPLY_ADD_STA failed\n"); | |
1327 | break; | |
1328 | } | |
1329 | } | |
1330 | ||
1331 | priv->alloc_rxb_skb--; | |
1332 | dev_kfree_skb_any(cmd.meta.u.skb); | |
1333 | ||
1334 | return rc; | |
1335 | } | |
1336 | ||
1337 | static int iwl_update_sta_key_info(struct iwl_priv *priv, | |
1338 | struct ieee80211_key_conf *keyconf, | |
1339 | u8 sta_id) | |
1340 | { | |
1341 | unsigned long flags; | |
1342 | __le16 key_flags = 0; | |
1343 | ||
1344 | switch (keyconf->alg) { | |
1345 | case ALG_CCMP: | |
1346 | key_flags |= STA_KEY_FLG_CCMP; | |
1347 | key_flags |= cpu_to_le16( | |
1348 | keyconf->keyidx << STA_KEY_FLG_KEYID_POS); | |
1349 | key_flags &= ~STA_KEY_FLG_INVALID; | |
1350 | break; | |
1351 | case ALG_TKIP: | |
1352 | case ALG_WEP: | |
1353 | return -EINVAL; | |
1354 | default: | |
1355 | return -EINVAL; | |
1356 | } | |
1357 | spin_lock_irqsave(&priv->sta_lock, flags); | |
1358 | priv->stations[sta_id].keyinfo.alg = keyconf->alg; | |
1359 | priv->stations[sta_id].keyinfo.keylen = keyconf->keylen; | |
1360 | memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, | |
1361 | keyconf->keylen); | |
1362 | ||
1363 | memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, | |
1364 | keyconf->keylen); | |
1365 | priv->stations[sta_id].sta.key.key_flags = key_flags; | |
1366 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; | |
1367 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
1368 | ||
1369 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
1370 | ||
1371 | IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n"); | |
1372 | iwl_send_add_station(priv, &priv->stations[sta_id].sta, 0); | |
1373 | return 0; | |
1374 | } | |
1375 | ||
1376 | static int iwl_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id) | |
1377 | { | |
1378 | unsigned long flags; | |
1379 | ||
1380 | spin_lock_irqsave(&priv->sta_lock, flags); | |
1381 | memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl_hw_key)); | |
1382 | memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl_keyinfo)); | |
1383 | priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC; | |
1384 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; | |
1385 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
1386 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
1387 | ||
1388 | IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n"); | |
1389 | iwl_send_add_station(priv, &priv->stations[sta_id].sta, 0); | |
1390 | return 0; | |
1391 | } | |
1392 | ||
1393 | static void iwl_clear_free_frames(struct iwl_priv *priv) | |
1394 | { | |
1395 | struct list_head *element; | |
1396 | ||
1397 | IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n", | |
1398 | priv->frames_count); | |
1399 | ||
1400 | while (!list_empty(&priv->free_frames)) { | |
1401 | element = priv->free_frames.next; | |
1402 | list_del(element); | |
1403 | kfree(list_entry(element, struct iwl_frame, list)); | |
1404 | priv->frames_count--; | |
1405 | } | |
1406 | ||
1407 | if (priv->frames_count) { | |
1408 | IWL_WARNING("%d frames still in use. Did we lose one?\n", | |
1409 | priv->frames_count); | |
1410 | priv->frames_count = 0; | |
1411 | } | |
1412 | } | |
1413 | ||
1414 | static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv) | |
1415 | { | |
1416 | struct iwl_frame *frame; | |
1417 | struct list_head *element; | |
1418 | if (list_empty(&priv->free_frames)) { | |
1419 | frame = kzalloc(sizeof(*frame), GFP_KERNEL); | |
1420 | if (!frame) { | |
1421 | IWL_ERROR("Could not allocate frame!\n"); | |
1422 | return NULL; | |
1423 | } | |
1424 | ||
1425 | priv->frames_count++; | |
1426 | return frame; | |
1427 | } | |
1428 | ||
1429 | element = priv->free_frames.next; | |
1430 | list_del(element); | |
1431 | return list_entry(element, struct iwl_frame, list); | |
1432 | } | |
1433 | ||
1434 | static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame) | |
1435 | { | |
1436 | memset(frame, 0, sizeof(*frame)); | |
1437 | list_add(&frame->list, &priv->free_frames); | |
1438 | } | |
1439 | ||
1440 | unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv, | |
1441 | struct ieee80211_hdr *hdr, | |
1442 | const u8 *dest, int left) | |
1443 | { | |
1444 | ||
1445 | if (!iwl_is_associated(priv) || !priv->ibss_beacon || | |
1446 | ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) && | |
1447 | (priv->iw_mode != IEEE80211_IF_TYPE_AP))) | |
1448 | return 0; | |
1449 | ||
1450 | if (priv->ibss_beacon->len > left) | |
1451 | return 0; | |
1452 | ||
1453 | memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len); | |
1454 | ||
1455 | return priv->ibss_beacon->len; | |
1456 | } | |
1457 | ||
1458 | static int iwl_rate_index_from_plcp(int plcp) | |
1459 | { | |
1460 | int i = 0; | |
1461 | ||
1462 | for (i = 0; i < IWL_RATE_COUNT; i++) | |
1463 | if (iwl_rates[i].plcp == plcp) | |
1464 | return i; | |
1465 | return -1; | |
1466 | } | |
1467 | ||
1468 | static u8 iwl_rate_get_lowest_plcp(int rate_mask) | |
1469 | { | |
1470 | u8 i; | |
1471 | ||
1472 | for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID; | |
1473 | i = iwl_rates[i].next_ieee) { | |
1474 | if (rate_mask & (1 << i)) | |
1475 | return iwl_rates[i].plcp; | |
1476 | } | |
1477 | ||
1478 | return IWL_RATE_INVALID; | |
1479 | } | |
1480 | ||
1481 | static int iwl_send_beacon_cmd(struct iwl_priv *priv) | |
1482 | { | |
1483 | struct iwl_frame *frame; | |
1484 | unsigned int frame_size; | |
1485 | int rc; | |
1486 | u8 rate; | |
1487 | ||
1488 | frame = iwl_get_free_frame(priv); | |
1489 | ||
1490 | if (!frame) { | |
1491 | IWL_ERROR("Could not obtain free frame buffer for beacon " | |
1492 | "command.\n"); | |
1493 | return -ENOMEM; | |
1494 | } | |
1495 | ||
1496 | if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) { | |
1497 | rate = iwl_rate_get_lowest_plcp(priv->active_rate_basic & | |
1498 | 0xFF0); | |
1499 | if (rate == IWL_INVALID_RATE) | |
1500 | rate = IWL_RATE_6M_PLCP; | |
1501 | } else { | |
1502 | rate = iwl_rate_get_lowest_plcp(priv->active_rate_basic & 0xF); | |
1503 | if (rate == IWL_INVALID_RATE) | |
1504 | rate = IWL_RATE_1M_PLCP; | |
1505 | } | |
1506 | ||
1507 | frame_size = iwl_hw_get_beacon_cmd(priv, frame, rate); | |
1508 | ||
1509 | rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size, | |
1510 | &frame->u.cmd[0]); | |
1511 | ||
1512 | iwl_free_frame(priv, frame); | |
1513 | ||
1514 | return rc; | |
1515 | } | |
1516 | ||
1517 | /****************************************************************************** | |
1518 | * | |
1519 | * EEPROM related functions | |
1520 | * | |
1521 | ******************************************************************************/ | |
1522 | ||
1523 | static void get_eeprom_mac(struct iwl_priv *priv, u8 *mac) | |
1524 | { | |
1525 | memcpy(mac, priv->eeprom.mac_address, 6); | |
1526 | } | |
1527 | ||
1528 | /** | |
1529 | * iwl_eeprom_init - read EEPROM contents | |
1530 | * | |
1531 | * Load the EEPROM from adapter into priv->eeprom | |
1532 | * | |
1533 | * NOTE: This routine uses the non-debug IO access functions. | |
1534 | */ | |
1535 | int iwl_eeprom_init(struct iwl_priv *priv) | |
1536 | { | |
1537 | u16 *e = (u16 *)&priv->eeprom; | |
1538 | u32 gp = iwl_read32(priv, CSR_EEPROM_GP); | |
1539 | u32 r; | |
1540 | int sz = sizeof(priv->eeprom); | |
1541 | int rc; | |
1542 | int i; | |
1543 | u16 addr; | |
1544 | ||
1545 | /* The EEPROM structure has several padding buffers within it | |
1546 | * and when adding new EEPROM maps is subject to programmer errors | |
1547 | * which may be very difficult to identify without explicitly | |
1548 | * checking the resulting size of the eeprom map. */ | |
1549 | BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE); | |
1550 | ||
1551 | if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) { | |
1552 | IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp); | |
1553 | return -ENOENT; | |
1554 | } | |
1555 | ||
91e17473 | 1556 | rc = iwl_eeprom_acquire_semaphore(priv); |
b481de9c | 1557 | if (rc < 0) { |
91e17473 | 1558 | IWL_ERROR("Failed to acquire EEPROM semaphore.\n"); |
b481de9c ZY |
1559 | return -ENOENT; |
1560 | } | |
1561 | ||
1562 | /* eeprom is an array of 16bit values */ | |
1563 | for (addr = 0; addr < sz; addr += sizeof(u16)) { | |
1564 | _iwl_write32(priv, CSR_EEPROM_REG, addr << 1); | |
1565 | _iwl_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD); | |
1566 | ||
1567 | for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT; | |
1568 | i += IWL_EEPROM_ACCESS_DELAY) { | |
1569 | r = _iwl_read_restricted(priv, CSR_EEPROM_REG); | |
1570 | if (r & CSR_EEPROM_REG_READ_VALID_MSK) | |
1571 | break; | |
1572 | udelay(IWL_EEPROM_ACCESS_DELAY); | |
1573 | } | |
1574 | ||
1575 | if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) { | |
1576 | IWL_ERROR("Time out reading EEPROM[%d]", addr); | |
1577 | return -ETIMEDOUT; | |
1578 | } | |
1579 | e[addr / 2] = le16_to_cpu(r >> 16); | |
1580 | } | |
1581 | ||
1582 | return 0; | |
1583 | } | |
1584 | ||
1585 | /****************************************************************************** | |
1586 | * | |
1587 | * Misc. internal state and helper functions | |
1588 | * | |
1589 | ******************************************************************************/ | |
1590 | #ifdef CONFIG_IWLWIFI_DEBUG | |
1591 | ||
1592 | /** | |
1593 | * iwl_report_frame - dump frame to syslog during debug sessions | |
1594 | * | |
1595 | * hack this function to show different aspects of received frames, | |
1596 | * including selective frame dumps. | |
1597 | * group100 parameter selects whether to show 1 out of 100 good frames. | |
1598 | * | |
1599 | * TODO: ieee80211_hdr stuff is common to 3945 and 4965, so frame type | |
1600 | * info output is okay, but some of this stuff (e.g. iwl_rx_frame_stats) | |
1601 | * is 3945-specific and gives bad output for 4965. Need to split the | |
1602 | * functionality, keep common stuff here. | |
1603 | */ | |
1604 | void iwl_report_frame(struct iwl_priv *priv, | |
1605 | struct iwl_rx_packet *pkt, | |
1606 | struct ieee80211_hdr *header, int group100) | |
1607 | { | |
1608 | u32 to_us; | |
1609 | u32 print_summary = 0; | |
1610 | u32 print_dump = 0; /* set to 1 to dump all frames' contents */ | |
1611 | u32 hundred = 0; | |
1612 | u32 dataframe = 0; | |
1613 | u16 fc; | |
1614 | u16 seq_ctl; | |
1615 | u16 channel; | |
1616 | u16 phy_flags; | |
1617 | int rate_sym; | |
1618 | u16 length; | |
1619 | u16 status; | |
1620 | u16 bcn_tmr; | |
1621 | u32 tsf_low; | |
1622 | u64 tsf; | |
1623 | u8 rssi; | |
1624 | u8 agc; | |
1625 | u16 sig_avg; | |
1626 | u16 noise_diff; | |
1627 | struct iwl_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt); | |
1628 | struct iwl_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt); | |
1629 | struct iwl_rx_frame_end *rx_end = IWL_RX_END(pkt); | |
1630 | u8 *data = IWL_RX_DATA(pkt); | |
1631 | ||
1632 | /* MAC header */ | |
1633 | fc = le16_to_cpu(header->frame_control); | |
1634 | seq_ctl = le16_to_cpu(header->seq_ctrl); | |
1635 | ||
1636 | /* metadata */ | |
1637 | channel = le16_to_cpu(rx_hdr->channel); | |
1638 | phy_flags = le16_to_cpu(rx_hdr->phy_flags); | |
1639 | rate_sym = rx_hdr->rate; | |
1640 | length = le16_to_cpu(rx_hdr->len); | |
1641 | ||
1642 | /* end-of-frame status and timestamp */ | |
1643 | status = le32_to_cpu(rx_end->status); | |
1644 | bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp); | |
1645 | tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff; | |
1646 | tsf = le64_to_cpu(rx_end->timestamp); | |
1647 | ||
1648 | /* signal statistics */ | |
1649 | rssi = rx_stats->rssi; | |
1650 | agc = rx_stats->agc; | |
1651 | sig_avg = le16_to_cpu(rx_stats->sig_avg); | |
1652 | noise_diff = le16_to_cpu(rx_stats->noise_diff); | |
1653 | ||
1654 | to_us = !compare_ether_addr(header->addr1, priv->mac_addr); | |
1655 | ||
1656 | /* if data frame is to us and all is good, | |
1657 | * (optionally) print summary for only 1 out of every 100 */ | |
1658 | if (to_us && (fc & ~IEEE80211_FCTL_PROTECTED) == | |
1659 | (IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) { | |
1660 | dataframe = 1; | |
1661 | if (!group100) | |
1662 | print_summary = 1; /* print each frame */ | |
1663 | else if (priv->framecnt_to_us < 100) { | |
1664 | priv->framecnt_to_us++; | |
1665 | print_summary = 0; | |
1666 | } else { | |
1667 | priv->framecnt_to_us = 0; | |
1668 | print_summary = 1; | |
1669 | hundred = 1; | |
1670 | } | |
1671 | } else { | |
1672 | /* print summary for all other frames */ | |
1673 | print_summary = 1; | |
1674 | } | |
1675 | ||
1676 | if (print_summary) { | |
1677 | char *title; | |
1678 | u32 rate; | |
1679 | ||
1680 | if (hundred) | |
1681 | title = "100Frames"; | |
1682 | else if (fc & IEEE80211_FCTL_RETRY) | |
1683 | title = "Retry"; | |
1684 | else if (ieee80211_is_assoc_response(fc)) | |
1685 | title = "AscRsp"; | |
1686 | else if (ieee80211_is_reassoc_response(fc)) | |
1687 | title = "RasRsp"; | |
1688 | else if (ieee80211_is_probe_response(fc)) { | |
1689 | title = "PrbRsp"; | |
1690 | print_dump = 1; /* dump frame contents */ | |
1691 | } else if (ieee80211_is_beacon(fc)) { | |
1692 | title = "Beacon"; | |
1693 | print_dump = 1; /* dump frame contents */ | |
1694 | } else if (ieee80211_is_atim(fc)) | |
1695 | title = "ATIM"; | |
1696 | else if (ieee80211_is_auth(fc)) | |
1697 | title = "Auth"; | |
1698 | else if (ieee80211_is_deauth(fc)) | |
1699 | title = "DeAuth"; | |
1700 | else if (ieee80211_is_disassoc(fc)) | |
1701 | title = "DisAssoc"; | |
1702 | else | |
1703 | title = "Frame"; | |
1704 | ||
1705 | rate = iwl_rate_index_from_plcp(rate_sym); | |
1706 | if (rate == -1) | |
1707 | rate = 0; | |
1708 | else | |
1709 | rate = iwl_rates[rate].ieee / 2; | |
1710 | ||
1711 | /* print frame summary. | |
1712 | * MAC addresses show just the last byte (for brevity), | |
1713 | * but you can hack it to show more, if you'd like to. */ | |
1714 | if (dataframe) | |
1715 | IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, " | |
1716 | "len=%u, rssi=%d, chnl=%d, rate=%u, \n", | |
1717 | title, fc, header->addr1[5], | |
1718 | length, rssi, channel, rate); | |
1719 | else { | |
1720 | /* src/dst addresses assume managed mode */ | |
1721 | IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, " | |
1722 | "src=0x%02x, rssi=%u, tim=%lu usec, " | |
1723 | "phy=0x%02x, chnl=%d\n", | |
1724 | title, fc, header->addr1[5], | |
1725 | header->addr3[5], rssi, | |
1726 | tsf_low - priv->scan_start_tsf, | |
1727 | phy_flags, channel); | |
1728 | } | |
1729 | } | |
1730 | if (print_dump) | |
1731 | iwl_print_hex_dump(IWL_DL_RX, data, length); | |
1732 | } | |
1733 | #endif | |
1734 | ||
1735 | static void iwl_unset_hw_setting(struct iwl_priv *priv) | |
1736 | { | |
1737 | if (priv->hw_setting.shared_virt) | |
1738 | pci_free_consistent(priv->pci_dev, | |
1739 | sizeof(struct iwl_shared), | |
1740 | priv->hw_setting.shared_virt, | |
1741 | priv->hw_setting.shared_phys); | |
1742 | } | |
1743 | ||
1744 | /** | |
1745 | * iwl_supported_rate_to_ie - fill in the supported rate in IE field | |
1746 | * | |
1747 | * return : set the bit for each supported rate insert in ie | |
1748 | */ | |
1749 | static u16 iwl_supported_rate_to_ie(u8 *ie, u16 supported_rate, | |
c7c46676 | 1750 | u16 basic_rate, int *left) |
b481de9c ZY |
1751 | { |
1752 | u16 ret_rates = 0, bit; | |
1753 | int i; | |
c7c46676 TW |
1754 | u8 *cnt = ie; |
1755 | u8 *rates = ie + 1; | |
b481de9c ZY |
1756 | |
1757 | for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) { | |
1758 | if (bit & supported_rate) { | |
1759 | ret_rates |= bit; | |
c7c46676 TW |
1760 | rates[*cnt] = iwl_rates[i].ieee | |
1761 | ((bit & basic_rate) ? 0x80 : 0x00); | |
1762 | (*cnt)++; | |
1763 | (*left)--; | |
1764 | if ((*left <= 0) || | |
1765 | (*cnt >= IWL_SUPPORTED_RATES_IE_LEN)) | |
b481de9c ZY |
1766 | break; |
1767 | } | |
1768 | } | |
1769 | ||
1770 | return ret_rates; | |
1771 | } | |
1772 | ||
1773 | /** | |
1774 | * iwl_fill_probe_req - fill in all required fields and IE for probe request | |
1775 | */ | |
1776 | static u16 iwl_fill_probe_req(struct iwl_priv *priv, | |
1777 | struct ieee80211_mgmt *frame, | |
1778 | int left, int is_direct) | |
1779 | { | |
1780 | int len = 0; | |
1781 | u8 *pos = NULL; | |
c7c46676 | 1782 | u16 active_rates, ret_rates, cck_rates; |
b481de9c ZY |
1783 | |
1784 | /* Make sure there is enough space for the probe request, | |
1785 | * two mandatory IEs and the data */ | |
1786 | left -= 24; | |
1787 | if (left < 0) | |
1788 | return 0; | |
1789 | len += 24; | |
1790 | ||
1791 | frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); | |
1792 | memcpy(frame->da, BROADCAST_ADDR, ETH_ALEN); | |
1793 | memcpy(frame->sa, priv->mac_addr, ETH_ALEN); | |
1794 | memcpy(frame->bssid, BROADCAST_ADDR, ETH_ALEN); | |
1795 | frame->seq_ctrl = 0; | |
1796 | ||
1797 | /* fill in our indirect SSID IE */ | |
1798 | /* ...next IE... */ | |
1799 | ||
1800 | left -= 2; | |
1801 | if (left < 0) | |
1802 | return 0; | |
1803 | len += 2; | |
1804 | pos = &(frame->u.probe_req.variable[0]); | |
1805 | *pos++ = WLAN_EID_SSID; | |
1806 | *pos++ = 0; | |
1807 | ||
1808 | /* fill in our direct SSID IE... */ | |
1809 | if (is_direct) { | |
1810 | /* ...next IE... */ | |
1811 | left -= 2 + priv->essid_len; | |
1812 | if (left < 0) | |
1813 | return 0; | |
1814 | /* ... fill it in... */ | |
1815 | *pos++ = WLAN_EID_SSID; | |
1816 | *pos++ = priv->essid_len; | |
1817 | memcpy(pos, priv->essid, priv->essid_len); | |
1818 | pos += priv->essid_len; | |
1819 | len += 2 + priv->essid_len; | |
1820 | } | |
1821 | ||
1822 | /* fill in supported rate */ | |
1823 | /* ...next IE... */ | |
1824 | left -= 2; | |
1825 | if (left < 0) | |
1826 | return 0; | |
c7c46676 | 1827 | |
b481de9c ZY |
1828 | /* ... fill it in... */ |
1829 | *pos++ = WLAN_EID_SUPP_RATES; | |
1830 | *pos = 0; | |
c7c46676 TW |
1831 | |
1832 | priv->active_rate = priv->rates_mask; | |
1833 | active_rates = priv->active_rate; | |
b481de9c ZY |
1834 | priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK; |
1835 | ||
c7c46676 TW |
1836 | cck_rates = IWL_CCK_RATES_MASK & active_rates; |
1837 | ret_rates = iwl_supported_rate_to_ie(pos, cck_rates, | |
1838 | priv->active_rate_basic, &left); | |
1839 | active_rates &= ~ret_rates; | |
1840 | ||
1841 | ret_rates = iwl_supported_rate_to_ie(pos, active_rates, | |
1842 | priv->active_rate_basic, &left); | |
1843 | active_rates &= ~ret_rates; | |
1844 | ||
b481de9c ZY |
1845 | len += 2 + *pos; |
1846 | pos += (*pos) + 1; | |
c7c46676 | 1847 | if (active_rates == 0) |
b481de9c ZY |
1848 | goto fill_end; |
1849 | ||
1850 | /* fill in supported extended rate */ | |
1851 | /* ...next IE... */ | |
1852 | left -= 2; | |
1853 | if (left < 0) | |
1854 | return 0; | |
1855 | /* ... fill it in... */ | |
1856 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
1857 | *pos = 0; | |
c7c46676 TW |
1858 | iwl_supported_rate_to_ie(pos, active_rates, |
1859 | priv->active_rate_basic, &left); | |
b481de9c ZY |
1860 | if (*pos > 0) |
1861 | len += 2 + *pos; | |
1862 | ||
1863 | fill_end: | |
1864 | return (u16)len; | |
1865 | } | |
1866 | ||
1867 | /* | |
1868 | * QoS support | |
1869 | */ | |
1870 | #ifdef CONFIG_IWLWIFI_QOS | |
1871 | static int iwl_send_qos_params_command(struct iwl_priv *priv, | |
1872 | struct iwl_qosparam_cmd *qos) | |
1873 | { | |
1874 | ||
1875 | return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM, | |
1876 | sizeof(struct iwl_qosparam_cmd), qos); | |
1877 | } | |
1878 | ||
1879 | static void iwl_reset_qos(struct iwl_priv *priv) | |
1880 | { | |
1881 | u16 cw_min = 15; | |
1882 | u16 cw_max = 1023; | |
1883 | u8 aifs = 2; | |
1884 | u8 is_legacy = 0; | |
1885 | unsigned long flags; | |
1886 | int i; | |
1887 | ||
1888 | spin_lock_irqsave(&priv->lock, flags); | |
1889 | priv->qos_data.qos_active = 0; | |
1890 | ||
1891 | if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) { | |
1892 | if (priv->qos_data.qos_enable) | |
1893 | priv->qos_data.qos_active = 1; | |
1894 | if (!(priv->active_rate & 0xfff0)) { | |
1895 | cw_min = 31; | |
1896 | is_legacy = 1; | |
1897 | } | |
1898 | } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { | |
1899 | if (priv->qos_data.qos_enable) | |
1900 | priv->qos_data.qos_active = 1; | |
1901 | } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) { | |
1902 | cw_min = 31; | |
1903 | is_legacy = 1; | |
1904 | } | |
1905 | ||
1906 | if (priv->qos_data.qos_active) | |
1907 | aifs = 3; | |
1908 | ||
1909 | priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min); | |
1910 | priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max); | |
1911 | priv->qos_data.def_qos_parm.ac[0].aifsn = aifs; | |
1912 | priv->qos_data.def_qos_parm.ac[0].edca_txop = 0; | |
1913 | priv->qos_data.def_qos_parm.ac[0].reserved1 = 0; | |
1914 | ||
1915 | if (priv->qos_data.qos_active) { | |
1916 | i = 1; | |
1917 | priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min); | |
1918 | priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max); | |
1919 | priv->qos_data.def_qos_parm.ac[i].aifsn = 7; | |
1920 | priv->qos_data.def_qos_parm.ac[i].edca_txop = 0; | |
1921 | priv->qos_data.def_qos_parm.ac[i].reserved1 = 0; | |
1922 | ||
1923 | i = 2; | |
1924 | priv->qos_data.def_qos_parm.ac[i].cw_min = | |
1925 | cpu_to_le16((cw_min + 1) / 2 - 1); | |
1926 | priv->qos_data.def_qos_parm.ac[i].cw_max = | |
1927 | cpu_to_le16(cw_max); | |
1928 | priv->qos_data.def_qos_parm.ac[i].aifsn = 2; | |
1929 | if (is_legacy) | |
1930 | priv->qos_data.def_qos_parm.ac[i].edca_txop = | |
1931 | cpu_to_le16(6016); | |
1932 | else | |
1933 | priv->qos_data.def_qos_parm.ac[i].edca_txop = | |
1934 | cpu_to_le16(3008); | |
1935 | priv->qos_data.def_qos_parm.ac[i].reserved1 = 0; | |
1936 | ||
1937 | i = 3; | |
1938 | priv->qos_data.def_qos_parm.ac[i].cw_min = | |
1939 | cpu_to_le16((cw_min + 1) / 4 - 1); | |
1940 | priv->qos_data.def_qos_parm.ac[i].cw_max = | |
1941 | cpu_to_le16((cw_max + 1) / 2 - 1); | |
1942 | priv->qos_data.def_qos_parm.ac[i].aifsn = 2; | |
1943 | priv->qos_data.def_qos_parm.ac[i].reserved1 = 0; | |
1944 | if (is_legacy) | |
1945 | priv->qos_data.def_qos_parm.ac[i].edca_txop = | |
1946 | cpu_to_le16(3264); | |
1947 | else | |
1948 | priv->qos_data.def_qos_parm.ac[i].edca_txop = | |
1949 | cpu_to_le16(1504); | |
1950 | } else { | |
1951 | for (i = 1; i < 4; i++) { | |
1952 | priv->qos_data.def_qos_parm.ac[i].cw_min = | |
1953 | cpu_to_le16(cw_min); | |
1954 | priv->qos_data.def_qos_parm.ac[i].cw_max = | |
1955 | cpu_to_le16(cw_max); | |
1956 | priv->qos_data.def_qos_parm.ac[i].aifsn = aifs; | |
1957 | priv->qos_data.def_qos_parm.ac[i].edca_txop = 0; | |
1958 | priv->qos_data.def_qos_parm.ac[i].reserved1 = 0; | |
1959 | } | |
1960 | } | |
1961 | IWL_DEBUG_QOS("set QoS to default \n"); | |
1962 | ||
1963 | spin_unlock_irqrestore(&priv->lock, flags); | |
1964 | } | |
1965 | ||
1966 | static void iwl_activate_qos(struct iwl_priv *priv, u8 force) | |
1967 | { | |
1968 | unsigned long flags; | |
1969 | ||
1970 | if (priv == NULL) | |
1971 | return; | |
1972 | ||
1973 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
1974 | return; | |
1975 | ||
1976 | if (!priv->qos_data.qos_enable) | |
1977 | return; | |
1978 | ||
1979 | spin_lock_irqsave(&priv->lock, flags); | |
1980 | priv->qos_data.def_qos_parm.qos_flags = 0; | |
1981 | ||
1982 | if (priv->qos_data.qos_cap.q_AP.queue_request && | |
1983 | !priv->qos_data.qos_cap.q_AP.txop_request) | |
1984 | priv->qos_data.def_qos_parm.qos_flags |= | |
1985 | QOS_PARAM_FLG_TXOP_TYPE_MSK; | |
1986 | ||
1987 | if (priv->qos_data.qos_active) | |
1988 | priv->qos_data.def_qos_parm.qos_flags |= | |
1989 | QOS_PARAM_FLG_UPDATE_EDCA_MSK; | |
1990 | ||
1991 | spin_unlock_irqrestore(&priv->lock, flags); | |
1992 | ||
1993 | if (force || iwl_is_associated(priv)) { | |
1994 | IWL_DEBUG_QOS("send QoS cmd with Qos active %d \n", | |
1995 | priv->qos_data.qos_active); | |
1996 | ||
1997 | iwl_send_qos_params_command(priv, | |
1998 | &(priv->qos_data.def_qos_parm)); | |
1999 | } | |
2000 | } | |
2001 | ||
2002 | #endif /* CONFIG_IWLWIFI_QOS */ | |
2003 | /* | |
2004 | * Power management (not Tx power!) functions | |
2005 | */ | |
2006 | #define MSEC_TO_USEC 1024 | |
2007 | ||
2008 | #define NOSLP __constant_cpu_to_le32(0) | |
2009 | #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK | |
2010 | #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC) | |
2011 | #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \ | |
2012 | __constant_cpu_to_le32(X1), \ | |
2013 | __constant_cpu_to_le32(X2), \ | |
2014 | __constant_cpu_to_le32(X3), \ | |
2015 | __constant_cpu_to_le32(X4)} | |
2016 | ||
2017 | ||
2018 | /* default power management (not Tx power) table values */ | |
2019 | /* for tim 0-10 */ | |
2020 | static struct iwl_power_vec_entry range_0[IWL_POWER_AC] = { | |
2021 | {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0}, | |
2022 | {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0}, | |
2023 | {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0}, | |
2024 | {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0}, | |
2025 | {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1}, | |
2026 | {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1} | |
2027 | }; | |
2028 | ||
2029 | /* for tim > 10 */ | |
2030 | static struct iwl_power_vec_entry range_1[IWL_POWER_AC] = { | |
2031 | {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0}, | |
2032 | {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), | |
2033 | SLP_VEC(1, 2, 3, 4, 0xFF)}, 0}, | |
2034 | {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), | |
2035 | SLP_VEC(2, 4, 6, 7, 0xFF)}, 0}, | |
2036 | {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), | |
2037 | SLP_VEC(2, 6, 9, 9, 0xFF)}, 0}, | |
2038 | {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0}, | |
2039 | {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), | |
2040 | SLP_VEC(4, 7, 10, 10, 0xFF)}, 0} | |
2041 | }; | |
2042 | ||
2043 | int iwl_power_init_handle(struct iwl_priv *priv) | |
2044 | { | |
2045 | int rc = 0, i; | |
2046 | struct iwl_power_mgr *pow_data; | |
2047 | int size = sizeof(struct iwl_power_vec_entry) * IWL_POWER_AC; | |
2048 | u16 pci_pm; | |
2049 | ||
2050 | IWL_DEBUG_POWER("Initialize power \n"); | |
2051 | ||
2052 | pow_data = &(priv->power_data); | |
2053 | ||
2054 | memset(pow_data, 0, sizeof(*pow_data)); | |
2055 | ||
2056 | pow_data->active_index = IWL_POWER_RANGE_0; | |
2057 | pow_data->dtim_val = 0xffff; | |
2058 | ||
2059 | memcpy(&pow_data->pwr_range_0[0], &range_0[0], size); | |
2060 | memcpy(&pow_data->pwr_range_1[0], &range_1[0], size); | |
2061 | ||
2062 | rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm); | |
2063 | if (rc != 0) | |
2064 | return 0; | |
2065 | else { | |
2066 | struct iwl_powertable_cmd *cmd; | |
2067 | ||
2068 | IWL_DEBUG_POWER("adjust power command flags\n"); | |
2069 | ||
2070 | for (i = 0; i < IWL_POWER_AC; i++) { | |
2071 | cmd = &pow_data->pwr_range_0[i].cmd; | |
2072 | ||
2073 | if (pci_pm & 0x1) | |
2074 | cmd->flags &= ~IWL_POWER_PCI_PM_MSK; | |
2075 | else | |
2076 | cmd->flags |= IWL_POWER_PCI_PM_MSK; | |
2077 | } | |
2078 | } | |
2079 | return rc; | |
2080 | } | |
2081 | ||
2082 | static int iwl_update_power_cmd(struct iwl_priv *priv, | |
2083 | struct iwl_powertable_cmd *cmd, u32 mode) | |
2084 | { | |
2085 | int rc = 0, i; | |
2086 | u8 skip; | |
2087 | u32 max_sleep = 0; | |
2088 | struct iwl_power_vec_entry *range; | |
2089 | u8 period = 0; | |
2090 | struct iwl_power_mgr *pow_data; | |
2091 | ||
2092 | if (mode > IWL_POWER_INDEX_5) { | |
2093 | IWL_DEBUG_POWER("Error invalid power mode \n"); | |
2094 | return -1; | |
2095 | } | |
2096 | pow_data = &(priv->power_data); | |
2097 | ||
2098 | if (pow_data->active_index == IWL_POWER_RANGE_0) | |
2099 | range = &pow_data->pwr_range_0[0]; | |
2100 | else | |
2101 | range = &pow_data->pwr_range_1[1]; | |
2102 | ||
2103 | memcpy(cmd, &range[mode].cmd, sizeof(struct iwl_powertable_cmd)); | |
2104 | ||
2105 | #ifdef IWL_MAC80211_DISABLE | |
2106 | if (priv->assoc_network != NULL) { | |
2107 | unsigned long flags; | |
2108 | ||
2109 | period = priv->assoc_network->tim.tim_period; | |
2110 | } | |
2111 | #endif /*IWL_MAC80211_DISABLE */ | |
2112 | skip = range[mode].no_dtim; | |
2113 | ||
2114 | if (period == 0) { | |
2115 | period = 1; | |
2116 | skip = 0; | |
2117 | } | |
2118 | ||
2119 | if (skip == 0) { | |
2120 | max_sleep = period; | |
2121 | cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK; | |
2122 | } else { | |
2123 | __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1]; | |
2124 | max_sleep = (le32_to_cpu(slp_itrvl) / period) * period; | |
2125 | cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK; | |
2126 | } | |
2127 | ||
2128 | for (i = 0; i < IWL_POWER_VEC_SIZE; i++) { | |
2129 | if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep) | |
2130 | cmd->sleep_interval[i] = cpu_to_le32(max_sleep); | |
2131 | } | |
2132 | ||
2133 | IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags); | |
2134 | IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout)); | |
2135 | IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout)); | |
2136 | IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n", | |
2137 | le32_to_cpu(cmd->sleep_interval[0]), | |
2138 | le32_to_cpu(cmd->sleep_interval[1]), | |
2139 | le32_to_cpu(cmd->sleep_interval[2]), | |
2140 | le32_to_cpu(cmd->sleep_interval[3]), | |
2141 | le32_to_cpu(cmd->sleep_interval[4])); | |
2142 | ||
2143 | return rc; | |
2144 | } | |
2145 | ||
2146 | static int iwl_send_power_mode(struct iwl_priv *priv, u32 mode) | |
2147 | { | |
2148 | u32 final_mode = mode; | |
2149 | int rc; | |
2150 | struct iwl_powertable_cmd cmd; | |
2151 | ||
2152 | /* If on battery, set to 3, | |
01ebd063 | 2153 | * if plugged into AC power, set to CAM ("continuously aware mode"), |
b481de9c ZY |
2154 | * else user level */ |
2155 | switch (mode) { | |
2156 | case IWL_POWER_BATTERY: | |
2157 | final_mode = IWL_POWER_INDEX_3; | |
2158 | break; | |
2159 | case IWL_POWER_AC: | |
2160 | final_mode = IWL_POWER_MODE_CAM; | |
2161 | break; | |
2162 | default: | |
2163 | final_mode = mode; | |
2164 | break; | |
2165 | } | |
2166 | ||
2167 | iwl_update_power_cmd(priv, &cmd, final_mode); | |
2168 | ||
2169 | rc = iwl_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd); | |
2170 | ||
2171 | if (final_mode == IWL_POWER_MODE_CAM) | |
2172 | clear_bit(STATUS_POWER_PMI, &priv->status); | |
2173 | else | |
2174 | set_bit(STATUS_POWER_PMI, &priv->status); | |
2175 | ||
2176 | return rc; | |
2177 | } | |
2178 | ||
2179 | int iwl_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header) | |
2180 | { | |
2181 | /* Filter incoming packets to determine if they are targeted toward | |
2182 | * this network, discarding packets coming from ourselves */ | |
2183 | switch (priv->iw_mode) { | |
2184 | case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */ | |
2185 | /* packets from our adapter are dropped (echo) */ | |
2186 | if (!compare_ether_addr(header->addr2, priv->mac_addr)) | |
2187 | return 0; | |
2188 | /* {broad,multi}cast packets to our IBSS go through */ | |
2189 | if (is_multicast_ether_addr(header->addr1)) | |
2190 | return !compare_ether_addr(header->addr3, priv->bssid); | |
2191 | /* packets to our adapter go through */ | |
2192 | return !compare_ether_addr(header->addr1, priv->mac_addr); | |
2193 | case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */ | |
2194 | /* packets from our adapter are dropped (echo) */ | |
2195 | if (!compare_ether_addr(header->addr3, priv->mac_addr)) | |
2196 | return 0; | |
2197 | /* {broad,multi}cast packets to our BSS go through */ | |
2198 | if (is_multicast_ether_addr(header->addr1)) | |
2199 | return !compare_ether_addr(header->addr2, priv->bssid); | |
2200 | /* packets to our adapter go through */ | |
2201 | return !compare_ether_addr(header->addr1, priv->mac_addr); | |
2202 | } | |
2203 | ||
2204 | return 1; | |
2205 | } | |
2206 | ||
2207 | #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x | |
2208 | ||
2209 | const char *iwl_get_tx_fail_reason(u32 status) | |
2210 | { | |
2211 | switch (status & TX_STATUS_MSK) { | |
2212 | case TX_STATUS_SUCCESS: | |
2213 | return "SUCCESS"; | |
2214 | TX_STATUS_ENTRY(SHORT_LIMIT); | |
2215 | TX_STATUS_ENTRY(LONG_LIMIT); | |
2216 | TX_STATUS_ENTRY(FIFO_UNDERRUN); | |
2217 | TX_STATUS_ENTRY(MGMNT_ABORT); | |
2218 | TX_STATUS_ENTRY(NEXT_FRAG); | |
2219 | TX_STATUS_ENTRY(LIFE_EXPIRE); | |
2220 | TX_STATUS_ENTRY(DEST_PS); | |
2221 | TX_STATUS_ENTRY(ABORTED); | |
2222 | TX_STATUS_ENTRY(BT_RETRY); | |
2223 | TX_STATUS_ENTRY(STA_INVALID); | |
2224 | TX_STATUS_ENTRY(FRAG_DROPPED); | |
2225 | TX_STATUS_ENTRY(TID_DISABLE); | |
2226 | TX_STATUS_ENTRY(FRAME_FLUSHED); | |
2227 | TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL); | |
2228 | TX_STATUS_ENTRY(TX_LOCKED); | |
2229 | TX_STATUS_ENTRY(NO_BEACON_ON_RADAR); | |
2230 | } | |
2231 | ||
2232 | return "UNKNOWN"; | |
2233 | } | |
2234 | ||
2235 | /** | |
2236 | * iwl_scan_cancel - Cancel any currently executing HW scan | |
2237 | * | |
2238 | * NOTE: priv->mutex is not required before calling this function | |
2239 | */ | |
2240 | static int iwl_scan_cancel(struct iwl_priv *priv) | |
2241 | { | |
2242 | if (!test_bit(STATUS_SCAN_HW, &priv->status)) { | |
2243 | clear_bit(STATUS_SCANNING, &priv->status); | |
2244 | return 0; | |
2245 | } | |
2246 | ||
2247 | if (test_bit(STATUS_SCANNING, &priv->status)) { | |
2248 | if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) { | |
2249 | IWL_DEBUG_SCAN("Queuing scan abort.\n"); | |
2250 | set_bit(STATUS_SCAN_ABORTING, &priv->status); | |
2251 | queue_work(priv->workqueue, &priv->abort_scan); | |
2252 | ||
2253 | } else | |
2254 | IWL_DEBUG_SCAN("Scan abort already in progress.\n"); | |
2255 | ||
2256 | return test_bit(STATUS_SCANNING, &priv->status); | |
2257 | } | |
2258 | ||
2259 | return 0; | |
2260 | } | |
2261 | ||
2262 | /** | |
2263 | * iwl_scan_cancel_timeout - Cancel any currently executing HW scan | |
2264 | * @ms: amount of time to wait (in milliseconds) for scan to abort | |
2265 | * | |
2266 | * NOTE: priv->mutex must be held before calling this function | |
2267 | */ | |
2268 | static int iwl_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms) | |
2269 | { | |
2270 | unsigned long now = jiffies; | |
2271 | int ret; | |
2272 | ||
2273 | ret = iwl_scan_cancel(priv); | |
2274 | if (ret && ms) { | |
2275 | mutex_unlock(&priv->mutex); | |
2276 | while (!time_after(jiffies, now + msecs_to_jiffies(ms)) && | |
2277 | test_bit(STATUS_SCANNING, &priv->status)) | |
2278 | msleep(1); | |
2279 | mutex_lock(&priv->mutex); | |
2280 | ||
2281 | return test_bit(STATUS_SCANNING, &priv->status); | |
2282 | } | |
2283 | ||
2284 | return ret; | |
2285 | } | |
2286 | ||
2287 | static void iwl_sequence_reset(struct iwl_priv *priv) | |
2288 | { | |
2289 | /* Reset ieee stats */ | |
2290 | ||
2291 | /* We don't reset the net_device_stats (ieee->stats) on | |
2292 | * re-association */ | |
2293 | ||
2294 | priv->last_seq_num = -1; | |
2295 | priv->last_frag_num = -1; | |
2296 | priv->last_packet_time = 0; | |
2297 | ||
2298 | iwl_scan_cancel(priv); | |
2299 | } | |
2300 | ||
2301 | #define MAX_UCODE_BEACON_INTERVAL 1024 | |
2302 | #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA) | |
2303 | ||
2304 | static __le16 iwl_adjust_beacon_interval(u16 beacon_val) | |
2305 | { | |
2306 | u16 new_val = 0; | |
2307 | u16 beacon_factor = 0; | |
2308 | ||
2309 | beacon_factor = | |
2310 | (beacon_val + MAX_UCODE_BEACON_INTERVAL) | |
2311 | / MAX_UCODE_BEACON_INTERVAL; | |
2312 | new_val = beacon_val / beacon_factor; | |
2313 | ||
2314 | return cpu_to_le16(new_val); | |
2315 | } | |
2316 | ||
2317 | static void iwl_setup_rxon_timing(struct iwl_priv *priv) | |
2318 | { | |
2319 | u64 interval_tm_unit; | |
2320 | u64 tsf, result; | |
2321 | unsigned long flags; | |
2322 | struct ieee80211_conf *conf = NULL; | |
2323 | u16 beacon_int = 0; | |
2324 | ||
2325 | conf = ieee80211_get_hw_conf(priv->hw); | |
2326 | ||
2327 | spin_lock_irqsave(&priv->lock, flags); | |
2328 | priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1); | |
2329 | priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0); | |
2330 | ||
2331 | priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL; | |
2332 | ||
2333 | tsf = priv->timestamp1; | |
2334 | tsf = ((tsf << 32) | priv->timestamp0); | |
2335 | ||
2336 | beacon_int = priv->beacon_int; | |
2337 | spin_unlock_irqrestore(&priv->lock, flags); | |
2338 | ||
2339 | if (priv->iw_mode == IEEE80211_IF_TYPE_STA) { | |
2340 | if (beacon_int == 0) { | |
2341 | priv->rxon_timing.beacon_interval = cpu_to_le16(100); | |
2342 | priv->rxon_timing.beacon_init_val = cpu_to_le32(102400); | |
2343 | } else { | |
2344 | priv->rxon_timing.beacon_interval = | |
2345 | cpu_to_le16(beacon_int); | |
2346 | priv->rxon_timing.beacon_interval = | |
2347 | iwl_adjust_beacon_interval( | |
2348 | le16_to_cpu(priv->rxon_timing.beacon_interval)); | |
2349 | } | |
2350 | ||
2351 | priv->rxon_timing.atim_window = 0; | |
2352 | } else { | |
2353 | priv->rxon_timing.beacon_interval = | |
2354 | iwl_adjust_beacon_interval(conf->beacon_int); | |
2355 | /* TODO: we need to get atim_window from upper stack | |
2356 | * for now we set to 0 */ | |
2357 | priv->rxon_timing.atim_window = 0; | |
2358 | } | |
2359 | ||
2360 | interval_tm_unit = | |
2361 | (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024); | |
2362 | result = do_div(tsf, interval_tm_unit); | |
2363 | priv->rxon_timing.beacon_init_val = | |
2364 | cpu_to_le32((u32) ((u64) interval_tm_unit - result)); | |
2365 | ||
2366 | IWL_DEBUG_ASSOC | |
2367 | ("beacon interval %d beacon timer %d beacon tim %d\n", | |
2368 | le16_to_cpu(priv->rxon_timing.beacon_interval), | |
2369 | le32_to_cpu(priv->rxon_timing.beacon_init_val), | |
2370 | le16_to_cpu(priv->rxon_timing.atim_window)); | |
2371 | } | |
2372 | ||
2373 | static int iwl_scan_initiate(struct iwl_priv *priv) | |
2374 | { | |
2375 | if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { | |
2376 | IWL_ERROR("APs don't scan.\n"); | |
2377 | return 0; | |
2378 | } | |
2379 | ||
2380 | if (!iwl_is_ready_rf(priv)) { | |
2381 | IWL_DEBUG_SCAN("Aborting scan due to not ready.\n"); | |
2382 | return -EIO; | |
2383 | } | |
2384 | ||
2385 | if (test_bit(STATUS_SCANNING, &priv->status)) { | |
2386 | IWL_DEBUG_SCAN("Scan already in progress.\n"); | |
2387 | return -EAGAIN; | |
2388 | } | |
2389 | ||
2390 | if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) { | |
2391 | IWL_DEBUG_SCAN("Scan request while abort pending. " | |
2392 | "Queuing.\n"); | |
2393 | return -EAGAIN; | |
2394 | } | |
2395 | ||
2396 | IWL_DEBUG_INFO("Starting scan...\n"); | |
2397 | priv->scan_bands = 2; | |
2398 | set_bit(STATUS_SCANNING, &priv->status); | |
2399 | priv->scan_start = jiffies; | |
2400 | priv->scan_pass_start = priv->scan_start; | |
2401 | ||
2402 | queue_work(priv->workqueue, &priv->request_scan); | |
2403 | ||
2404 | return 0; | |
2405 | } | |
2406 | ||
2407 | static int iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt) | |
2408 | { | |
2409 | struct iwl_rxon_cmd *rxon = &priv->staging_rxon; | |
2410 | ||
2411 | if (hw_decrypt) | |
2412 | rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK; | |
2413 | else | |
2414 | rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK; | |
2415 | ||
2416 | return 0; | |
2417 | } | |
2418 | ||
2419 | static void iwl_set_flags_for_phymode(struct iwl_priv *priv, u8 phymode) | |
2420 | { | |
2421 | if (phymode == MODE_IEEE80211A) { | |
2422 | priv->staging_rxon.flags &= | |
2423 | ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK | |
2424 | | RXON_FLG_CCK_MSK); | |
2425 | priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK; | |
2426 | } else { | |
2427 | /* Copied from iwl_bg_post_associate() */ | |
2428 | if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) | |
2429 | priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK; | |
2430 | else | |
2431 | priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK; | |
2432 | ||
2433 | if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) | |
2434 | priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK; | |
2435 | ||
2436 | priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK; | |
2437 | priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK; | |
2438 | priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK; | |
2439 | } | |
2440 | } | |
2441 | ||
2442 | /* | |
01ebd063 | 2443 | * initialize rxon structure with default values from eeprom |
b481de9c ZY |
2444 | */ |
2445 | static void iwl_connection_init_rx_config(struct iwl_priv *priv) | |
2446 | { | |
2447 | const struct iwl_channel_info *ch_info; | |
2448 | ||
2449 | memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon)); | |
2450 | ||
2451 | switch (priv->iw_mode) { | |
2452 | case IEEE80211_IF_TYPE_AP: | |
2453 | priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP; | |
2454 | break; | |
2455 | ||
2456 | case IEEE80211_IF_TYPE_STA: | |
2457 | priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS; | |
2458 | priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK; | |
2459 | break; | |
2460 | ||
2461 | case IEEE80211_IF_TYPE_IBSS: | |
2462 | priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS; | |
2463 | priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK; | |
2464 | priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK | | |
2465 | RXON_FILTER_ACCEPT_GRP_MSK; | |
2466 | break; | |
2467 | ||
2468 | case IEEE80211_IF_TYPE_MNTR: | |
2469 | priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER; | |
2470 | priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK | | |
2471 | RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK; | |
2472 | break; | |
2473 | } | |
2474 | ||
2475 | #if 0 | |
2476 | /* TODO: Figure out when short_preamble would be set and cache from | |
2477 | * that */ | |
2478 | if (!hw_to_local(priv->hw)->short_preamble) | |
2479 | priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; | |
2480 | else | |
2481 | priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; | |
2482 | #endif | |
2483 | ||
2484 | ch_info = iwl_get_channel_info(priv, priv->phymode, | |
2485 | le16_to_cpu(priv->staging_rxon.channel)); | |
2486 | ||
2487 | if (!ch_info) | |
2488 | ch_info = &priv->channel_info[0]; | |
2489 | ||
2490 | /* | |
2491 | * in some case A channels are all non IBSS | |
2492 | * in this case force B/G channel | |
2493 | */ | |
2494 | if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) && | |
2495 | !(is_channel_ibss(ch_info))) | |
2496 | ch_info = &priv->channel_info[0]; | |
2497 | ||
2498 | priv->staging_rxon.channel = cpu_to_le16(ch_info->channel); | |
2499 | if (is_channel_a_band(ch_info)) | |
2500 | priv->phymode = MODE_IEEE80211A; | |
2501 | else | |
2502 | priv->phymode = MODE_IEEE80211G; | |
2503 | ||
2504 | iwl_set_flags_for_phymode(priv, priv->phymode); | |
2505 | ||
2506 | priv->staging_rxon.ofdm_basic_rates = | |
2507 | (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF; | |
2508 | priv->staging_rxon.cck_basic_rates = | |
2509 | (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF; | |
2510 | } | |
2511 | ||
2512 | static int iwl_set_mode(struct iwl_priv *priv, int mode) | |
2513 | { | |
2514 | if (!iwl_is_ready_rf(priv)) | |
2515 | return -EAGAIN; | |
2516 | ||
2517 | if (mode == IEEE80211_IF_TYPE_IBSS) { | |
2518 | const struct iwl_channel_info *ch_info; | |
2519 | ||
2520 | ch_info = iwl_get_channel_info(priv, | |
2521 | priv->phymode, | |
2522 | le16_to_cpu(priv->staging_rxon.channel)); | |
2523 | ||
2524 | if (!ch_info || !is_channel_ibss(ch_info)) { | |
2525 | IWL_ERROR("channel %d not IBSS channel\n", | |
2526 | le16_to_cpu(priv->staging_rxon.channel)); | |
2527 | return -EINVAL; | |
2528 | } | |
2529 | } | |
2530 | ||
2531 | cancel_delayed_work(&priv->scan_check); | |
2532 | if (iwl_scan_cancel_timeout(priv, 100)) { | |
2533 | IWL_WARNING("Aborted scan still in progress after 100ms\n"); | |
2534 | IWL_DEBUG_MAC80211("leaving - scan abort failed.\n"); | |
2535 | return -EAGAIN; | |
2536 | } | |
2537 | ||
2538 | priv->iw_mode = mode; | |
2539 | ||
2540 | iwl_connection_init_rx_config(priv); | |
2541 | memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN); | |
2542 | ||
2543 | iwl_clear_stations_table(priv); | |
2544 | ||
2545 | iwl_commit_rxon(priv); | |
2546 | ||
2547 | return 0; | |
2548 | } | |
2549 | ||
2550 | static void iwl_build_tx_cmd_hwcrypto(struct iwl_priv *priv, | |
2551 | struct ieee80211_tx_control *ctl, | |
2552 | struct iwl_cmd *cmd, | |
2553 | struct sk_buff *skb_frag, | |
2554 | int last_frag) | |
2555 | { | |
2556 | struct iwl_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo; | |
2557 | ||
2558 | switch (keyinfo->alg) { | |
2559 | case ALG_CCMP: | |
2560 | cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM; | |
2561 | memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen); | |
2562 | IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n"); | |
2563 | break; | |
2564 | ||
2565 | case ALG_TKIP: | |
2566 | #if 0 | |
2567 | cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP; | |
2568 | ||
2569 | if (last_frag) | |
2570 | memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8, | |
2571 | 8); | |
2572 | else | |
2573 | memset(cmd->cmd.tx.tkip_mic.byte, 0, 8); | |
2574 | #endif | |
2575 | break; | |
2576 | ||
2577 | case ALG_WEP: | |
2578 | cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP | | |
2579 | (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT; | |
2580 | ||
2581 | if (keyinfo->keylen == 13) | |
2582 | cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128; | |
2583 | ||
2584 | memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen); | |
2585 | ||
2586 | IWL_DEBUG_TX("Configuring packet for WEP encryption " | |
2587 | "with key %d\n", ctl->key_idx); | |
2588 | break; | |
2589 | ||
b481de9c ZY |
2590 | default: |
2591 | printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg); | |
2592 | break; | |
2593 | } | |
2594 | } | |
2595 | ||
2596 | /* | |
2597 | * handle build REPLY_TX command notification. | |
2598 | */ | |
2599 | static void iwl_build_tx_cmd_basic(struct iwl_priv *priv, | |
2600 | struct iwl_cmd *cmd, | |
2601 | struct ieee80211_tx_control *ctrl, | |
2602 | struct ieee80211_hdr *hdr, | |
2603 | int is_unicast, u8 std_id) | |
2604 | { | |
2605 | __le16 *qc; | |
2606 | u16 fc = le16_to_cpu(hdr->frame_control); | |
2607 | __le32 tx_flags = cmd->cmd.tx.tx_flags; | |
2608 | ||
2609 | cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; | |
2610 | if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) { | |
2611 | tx_flags |= TX_CMD_FLG_ACK_MSK; | |
2612 | if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) | |
2613 | tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; | |
2614 | if (ieee80211_is_probe_response(fc) && | |
2615 | !(le16_to_cpu(hdr->seq_ctrl) & 0xf)) | |
2616 | tx_flags |= TX_CMD_FLG_TSF_MSK; | |
2617 | } else { | |
2618 | tx_flags &= (~TX_CMD_FLG_ACK_MSK); | |
2619 | tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; | |
2620 | } | |
2621 | ||
2622 | cmd->cmd.tx.sta_id = std_id; | |
2623 | if (ieee80211_get_morefrag(hdr)) | |
2624 | tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK; | |
2625 | ||
2626 | qc = ieee80211_get_qos_ctrl(hdr); | |
2627 | if (qc) { | |
2628 | cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf); | |
2629 | tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK; | |
2630 | } else | |
2631 | tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; | |
2632 | ||
2633 | if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) { | |
2634 | tx_flags |= TX_CMD_FLG_RTS_MSK; | |
2635 | tx_flags &= ~TX_CMD_FLG_CTS_MSK; | |
2636 | } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) { | |
2637 | tx_flags &= ~TX_CMD_FLG_RTS_MSK; | |
2638 | tx_flags |= TX_CMD_FLG_CTS_MSK; | |
2639 | } | |
2640 | ||
2641 | if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK)) | |
2642 | tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK; | |
2643 | ||
2644 | tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK); | |
2645 | if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) { | |
2646 | if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ || | |
2647 | (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ) | |
2648 | cmd->cmd.tx.timeout.pm_frame_timeout = | |
2649 | cpu_to_le16(3); | |
2650 | else | |
2651 | cmd->cmd.tx.timeout.pm_frame_timeout = | |
2652 | cpu_to_le16(2); | |
2653 | } else | |
2654 | cmd->cmd.tx.timeout.pm_frame_timeout = 0; | |
2655 | ||
2656 | cmd->cmd.tx.driver_txop = 0; | |
2657 | cmd->cmd.tx.tx_flags = tx_flags; | |
2658 | cmd->cmd.tx.next_frame_len = 0; | |
2659 | } | |
2660 | ||
2661 | static int iwl_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr) | |
2662 | { | |
2663 | int sta_id; | |
2664 | u16 fc = le16_to_cpu(hdr->frame_control); | |
2665 | ||
2666 | /* If this frame is broadcast or not data then use the broadcast | |
2667 | * station id */ | |
2668 | if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) || | |
2669 | is_multicast_ether_addr(hdr->addr1)) | |
2670 | return priv->hw_setting.bcast_sta_id; | |
2671 | ||
2672 | switch (priv->iw_mode) { | |
2673 | ||
2674 | /* If this frame is part of a BSS network (we're a station), then | |
2675 | * we use the AP's station id */ | |
2676 | case IEEE80211_IF_TYPE_STA: | |
2677 | return IWL_AP_ID; | |
2678 | ||
2679 | /* If we are an AP, then find the station, or use BCAST */ | |
2680 | case IEEE80211_IF_TYPE_AP: | |
2681 | sta_id = iwl_hw_find_station(priv, hdr->addr1); | |
2682 | if (sta_id != IWL_INVALID_STATION) | |
2683 | return sta_id; | |
2684 | return priv->hw_setting.bcast_sta_id; | |
2685 | ||
2686 | /* If this frame is part of a IBSS network, then we use the | |
2687 | * target specific station id */ | |
0795af57 JP |
2688 | case IEEE80211_IF_TYPE_IBSS: { |
2689 | DECLARE_MAC_BUF(mac); | |
2690 | ||
b481de9c ZY |
2691 | sta_id = iwl_hw_find_station(priv, hdr->addr1); |
2692 | if (sta_id != IWL_INVALID_STATION) | |
2693 | return sta_id; | |
2694 | ||
2695 | sta_id = iwl_add_station(priv, hdr->addr1, 0, CMD_ASYNC); | |
2696 | ||
2697 | if (sta_id != IWL_INVALID_STATION) | |
2698 | return sta_id; | |
2699 | ||
0795af57 | 2700 | IWL_DEBUG_DROP("Station %s not in station map. " |
b481de9c | 2701 | "Defaulting to broadcast...\n", |
0795af57 | 2702 | print_mac(mac, hdr->addr1)); |
b481de9c ZY |
2703 | iwl_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr)); |
2704 | return priv->hw_setting.bcast_sta_id; | |
0795af57 | 2705 | } |
b481de9c | 2706 | default: |
01ebd063 | 2707 | IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode); |
b481de9c ZY |
2708 | return priv->hw_setting.bcast_sta_id; |
2709 | } | |
2710 | } | |
2711 | ||
2712 | /* | |
2713 | * start REPLY_TX command process | |
2714 | */ | |
2715 | static int iwl_tx_skb(struct iwl_priv *priv, | |
2716 | struct sk_buff *skb, struct ieee80211_tx_control *ctl) | |
2717 | { | |
2718 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; | |
2719 | struct iwl_tfd_frame *tfd; | |
2720 | u32 *control_flags; | |
2721 | int txq_id = ctl->queue; | |
2722 | struct iwl_tx_queue *txq = NULL; | |
2723 | struct iwl_queue *q = NULL; | |
2724 | dma_addr_t phys_addr; | |
2725 | dma_addr_t txcmd_phys; | |
2726 | struct iwl_cmd *out_cmd = NULL; | |
2727 | u16 len, idx, len_org; | |
2728 | u8 id, hdr_len, unicast; | |
2729 | u8 sta_id; | |
2730 | u16 seq_number = 0; | |
2731 | u16 fc; | |
2732 | __le16 *qc; | |
2733 | u8 wait_write_ptr = 0; | |
2734 | unsigned long flags; | |
2735 | int rc; | |
2736 | ||
2737 | spin_lock_irqsave(&priv->lock, flags); | |
2738 | if (iwl_is_rfkill(priv)) { | |
2739 | IWL_DEBUG_DROP("Dropping - RF KILL\n"); | |
2740 | goto drop_unlock; | |
2741 | } | |
2742 | ||
2743 | if (!priv->interface_id) { | |
2744 | IWL_DEBUG_DROP("Dropping - !priv->interface_id\n"); | |
2745 | goto drop_unlock; | |
2746 | } | |
2747 | ||
2748 | if ((ctl->tx_rate & 0xFF) == IWL_INVALID_RATE) { | |
2749 | IWL_ERROR("ERROR: No TX rate available.\n"); | |
2750 | goto drop_unlock; | |
2751 | } | |
2752 | ||
2753 | unicast = !is_multicast_ether_addr(hdr->addr1); | |
2754 | id = 0; | |
2755 | ||
2756 | fc = le16_to_cpu(hdr->frame_control); | |
2757 | ||
2758 | #ifdef CONFIG_IWLWIFI_DEBUG | |
2759 | if (ieee80211_is_auth(fc)) | |
2760 | IWL_DEBUG_TX("Sending AUTH frame\n"); | |
2761 | else if (ieee80211_is_assoc_request(fc)) | |
2762 | IWL_DEBUG_TX("Sending ASSOC frame\n"); | |
2763 | else if (ieee80211_is_reassoc_request(fc)) | |
2764 | IWL_DEBUG_TX("Sending REASSOC frame\n"); | |
2765 | #endif | |
2766 | ||
2767 | if (!iwl_is_associated(priv) && | |
2768 | ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) { | |
2769 | IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n"); | |
2770 | goto drop_unlock; | |
2771 | } | |
2772 | ||
2773 | spin_unlock_irqrestore(&priv->lock, flags); | |
2774 | ||
2775 | hdr_len = ieee80211_get_hdrlen(fc); | |
2776 | sta_id = iwl_get_sta_id(priv, hdr); | |
2777 | if (sta_id == IWL_INVALID_STATION) { | |
0795af57 JP |
2778 | DECLARE_MAC_BUF(mac); |
2779 | ||
2780 | IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n", | |
2781 | print_mac(mac, hdr->addr1)); | |
b481de9c ZY |
2782 | goto drop; |
2783 | } | |
2784 | ||
2785 | IWL_DEBUG_RATE("station Id %d\n", sta_id); | |
2786 | ||
2787 | qc = ieee80211_get_qos_ctrl(hdr); | |
2788 | if (qc) { | |
2789 | u8 tid = (u8)(le16_to_cpu(*qc) & 0xf); | |
2790 | seq_number = priv->stations[sta_id].tid[tid].seq_number & | |
2791 | IEEE80211_SCTL_SEQ; | |
2792 | hdr->seq_ctrl = cpu_to_le16(seq_number) | | |
2793 | (hdr->seq_ctrl & | |
2794 | __constant_cpu_to_le16(IEEE80211_SCTL_FRAG)); | |
2795 | seq_number += 0x10; | |
2796 | } | |
2797 | txq = &priv->txq[txq_id]; | |
2798 | q = &txq->q; | |
2799 | ||
2800 | spin_lock_irqsave(&priv->lock, flags); | |
2801 | ||
2802 | tfd = &txq->bd[q->first_empty]; | |
2803 | memset(tfd, 0, sizeof(*tfd)); | |
2804 | control_flags = (u32 *) tfd; | |
2805 | idx = get_cmd_index(q, q->first_empty, 0); | |
2806 | ||
2807 | memset(&(txq->txb[q->first_empty]), 0, sizeof(struct iwl_tx_info)); | |
2808 | txq->txb[q->first_empty].skb[0] = skb; | |
2809 | memcpy(&(txq->txb[q->first_empty].status.control), | |
2810 | ctl, sizeof(struct ieee80211_tx_control)); | |
2811 | out_cmd = &txq->cmd[idx]; | |
2812 | memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr)); | |
2813 | memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx)); | |
2814 | out_cmd->hdr.cmd = REPLY_TX; | |
2815 | out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) | | |
2816 | INDEX_TO_SEQ(q->first_empty))); | |
2817 | /* copy frags header */ | |
2818 | memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len); | |
2819 | ||
2820 | /* hdr = (struct ieee80211_hdr *)out_cmd->cmd.tx.hdr; */ | |
2821 | len = priv->hw_setting.tx_cmd_len + | |
2822 | sizeof(struct iwl_cmd_header) + hdr_len; | |
2823 | ||
2824 | len_org = len; | |
2825 | len = (len + 3) & ~3; | |
2826 | ||
2827 | if (len_org != len) | |
2828 | len_org = 1; | |
2829 | else | |
2830 | len_org = 0; | |
2831 | ||
2832 | txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl_cmd) * idx + | |
2833 | offsetof(struct iwl_cmd, hdr); | |
2834 | ||
2835 | iwl_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len); | |
2836 | ||
2837 | if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT)) | |
2838 | iwl_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0); | |
2839 | ||
2840 | /* 802.11 null functions have no payload... */ | |
2841 | len = skb->len - hdr_len; | |
2842 | if (len) { | |
2843 | phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len, | |
2844 | len, PCI_DMA_TODEVICE); | |
2845 | iwl_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len); | |
2846 | } | |
2847 | ||
2848 | /* If there is no payload, then only one TFD is used */ | |
2849 | if (!len) | |
2850 | *control_flags = TFD_CTL_COUNT_SET(1); | |
2851 | else | |
2852 | *control_flags = TFD_CTL_COUNT_SET(2) | | |
2853 | TFD_CTL_PAD_SET(U32_PAD(len)); | |
2854 | ||
2855 | len = (u16)skb->len; | |
2856 | out_cmd->cmd.tx.len = cpu_to_le16(len); | |
2857 | ||
2858 | /* TODO need this for burst mode later on */ | |
2859 | iwl_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id); | |
2860 | ||
2861 | /* set is_hcca to 0; it probably will never be implemented */ | |
2862 | iwl_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0); | |
2863 | ||
2864 | out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_A_MSK; | |
2865 | out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_B_MSK; | |
2866 | ||
2867 | if (!ieee80211_get_morefrag(hdr)) { | |
2868 | txq->need_update = 1; | |
2869 | if (qc) { | |
2870 | u8 tid = (u8)(le16_to_cpu(*qc) & 0xf); | |
2871 | priv->stations[sta_id].tid[tid].seq_number = seq_number; | |
2872 | } | |
2873 | } else { | |
2874 | wait_write_ptr = 1; | |
2875 | txq->need_update = 0; | |
2876 | } | |
2877 | ||
2878 | iwl_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload, | |
2879 | sizeof(out_cmd->cmd.tx)); | |
2880 | ||
2881 | iwl_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr, | |
2882 | ieee80211_get_hdrlen(fc)); | |
2883 | ||
2884 | q->first_empty = iwl_queue_inc_wrap(q->first_empty, q->n_bd); | |
2885 | rc = iwl_tx_queue_update_write_ptr(priv, txq); | |
2886 | spin_unlock_irqrestore(&priv->lock, flags); | |
2887 | ||
2888 | if (rc) | |
2889 | return rc; | |
2890 | ||
2891 | if ((iwl_queue_space(q) < q->high_mark) | |
2892 | && priv->mac80211_registered) { | |
2893 | if (wait_write_ptr) { | |
2894 | spin_lock_irqsave(&priv->lock, flags); | |
2895 | txq->need_update = 1; | |
2896 | iwl_tx_queue_update_write_ptr(priv, txq); | |
2897 | spin_unlock_irqrestore(&priv->lock, flags); | |
2898 | } | |
2899 | ||
2900 | ieee80211_stop_queue(priv->hw, ctl->queue); | |
2901 | } | |
2902 | ||
2903 | return 0; | |
2904 | ||
2905 | drop_unlock: | |
2906 | spin_unlock_irqrestore(&priv->lock, flags); | |
2907 | drop: | |
2908 | return -1; | |
2909 | } | |
2910 | ||
2911 | static void iwl_set_rate(struct iwl_priv *priv) | |
2912 | { | |
2913 | const struct ieee80211_hw_mode *hw = NULL; | |
2914 | struct ieee80211_rate *rate; | |
2915 | int i; | |
2916 | ||
2917 | hw = iwl_get_hw_mode(priv, priv->phymode); | |
c4ba9621 SA |
2918 | if (!hw) { |
2919 | IWL_ERROR("Failed to set rate: unable to get hw mode\n"); | |
2920 | return; | |
2921 | } | |
b481de9c ZY |
2922 | |
2923 | priv->active_rate = 0; | |
2924 | priv->active_rate_basic = 0; | |
2925 | ||
2926 | IWL_DEBUG_RATE("Setting rates for 802.11%c\n", | |
2927 | hw->mode == MODE_IEEE80211A ? | |
2928 | 'a' : ((hw->mode == MODE_IEEE80211B) ? 'b' : 'g')); | |
2929 | ||
2930 | for (i = 0; i < hw->num_rates; i++) { | |
2931 | rate = &(hw->rates[i]); | |
2932 | if ((rate->val < IWL_RATE_COUNT) && | |
2933 | (rate->flags & IEEE80211_RATE_SUPPORTED)) { | |
2934 | IWL_DEBUG_RATE("Adding rate index %d (plcp %d)%s\n", | |
2935 | rate->val, iwl_rates[rate->val].plcp, | |
2936 | (rate->flags & IEEE80211_RATE_BASIC) ? | |
2937 | "*" : ""); | |
2938 | priv->active_rate |= (1 << rate->val); | |
2939 | if (rate->flags & IEEE80211_RATE_BASIC) | |
2940 | priv->active_rate_basic |= (1 << rate->val); | |
2941 | } else | |
2942 | IWL_DEBUG_RATE("Not adding rate %d (plcp %d)\n", | |
2943 | rate->val, iwl_rates[rate->val].plcp); | |
2944 | } | |
2945 | ||
2946 | IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n", | |
2947 | priv->active_rate, priv->active_rate_basic); | |
2948 | ||
2949 | /* | |
2950 | * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK) | |
2951 | * otherwise set it to the default of all CCK rates and 6, 12, 24 for | |
2952 | * OFDM | |
2953 | */ | |
2954 | if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK) | |
2955 | priv->staging_rxon.cck_basic_rates = | |
2956 | ((priv->active_rate_basic & | |
2957 | IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF; | |
2958 | else | |
2959 | priv->staging_rxon.cck_basic_rates = | |
2960 | (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF; | |
2961 | ||
2962 | if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK) | |
2963 | priv->staging_rxon.ofdm_basic_rates = | |
2964 | ((priv->active_rate_basic & | |
2965 | (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >> | |
2966 | IWL_FIRST_OFDM_RATE) & 0xFF; | |
2967 | else | |
2968 | priv->staging_rxon.ofdm_basic_rates = | |
2969 | (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF; | |
2970 | } | |
2971 | ||
2972 | static void iwl_radio_kill_sw(struct iwl_priv *priv, int disable_radio) | |
2973 | { | |
2974 | unsigned long flags; | |
2975 | ||
2976 | if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status)) | |
2977 | return; | |
2978 | ||
2979 | IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n", | |
2980 | disable_radio ? "OFF" : "ON"); | |
2981 | ||
2982 | if (disable_radio) { | |
2983 | iwl_scan_cancel(priv); | |
2984 | /* FIXME: This is a workaround for AP */ | |
2985 | if (priv->iw_mode != IEEE80211_IF_TYPE_AP) { | |
2986 | spin_lock_irqsave(&priv->lock, flags); | |
2987 | iwl_write32(priv, CSR_UCODE_DRV_GP1_SET, | |
2988 | CSR_UCODE_SW_BIT_RFKILL); | |
2989 | spin_unlock_irqrestore(&priv->lock, flags); | |
2990 | iwl_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0); | |
2991 | set_bit(STATUS_RF_KILL_SW, &priv->status); | |
2992 | } | |
2993 | return; | |
2994 | } | |
2995 | ||
2996 | spin_lock_irqsave(&priv->lock, flags); | |
2997 | iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); | |
2998 | ||
2999 | clear_bit(STATUS_RF_KILL_SW, &priv->status); | |
3000 | spin_unlock_irqrestore(&priv->lock, flags); | |
3001 | ||
3002 | /* wake up ucode */ | |
3003 | msleep(10); | |
3004 | ||
3005 | spin_lock_irqsave(&priv->lock, flags); | |
3006 | iwl_read32(priv, CSR_UCODE_DRV_GP1); | |
3007 | if (!iwl_grab_restricted_access(priv)) | |
3008 | iwl_release_restricted_access(priv); | |
3009 | spin_unlock_irqrestore(&priv->lock, flags); | |
3010 | ||
3011 | if (test_bit(STATUS_RF_KILL_HW, &priv->status)) { | |
3012 | IWL_DEBUG_RF_KILL("Can not turn radio back on - " | |
3013 | "disabled by HW switch\n"); | |
3014 | return; | |
3015 | } | |
3016 | ||
3017 | queue_work(priv->workqueue, &priv->restart); | |
3018 | return; | |
3019 | } | |
3020 | ||
3021 | void iwl_set_decrypted_flag(struct iwl_priv *priv, struct sk_buff *skb, | |
3022 | u32 decrypt_res, struct ieee80211_rx_status *stats) | |
3023 | { | |
3024 | u16 fc = | |
3025 | le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control); | |
3026 | ||
3027 | if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK) | |
3028 | return; | |
3029 | ||
3030 | if (!(fc & IEEE80211_FCTL_PROTECTED)) | |
3031 | return; | |
3032 | ||
3033 | IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res); | |
3034 | switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) { | |
3035 | case RX_RES_STATUS_SEC_TYPE_TKIP: | |
3036 | if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) == | |
3037 | RX_RES_STATUS_BAD_ICV_MIC) | |
3038 | stats->flag |= RX_FLAG_MMIC_ERROR; | |
3039 | case RX_RES_STATUS_SEC_TYPE_WEP: | |
3040 | case RX_RES_STATUS_SEC_TYPE_CCMP: | |
3041 | if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) == | |
3042 | RX_RES_STATUS_DECRYPT_OK) { | |
3043 | IWL_DEBUG_RX("hw decrypt successfully!!!\n"); | |
3044 | stats->flag |= RX_FLAG_DECRYPTED; | |
3045 | } | |
3046 | break; | |
3047 | ||
3048 | default: | |
3049 | break; | |
3050 | } | |
3051 | } | |
3052 | ||
3053 | void iwl_handle_data_packet_monitor(struct iwl_priv *priv, | |
3054 | struct iwl_rx_mem_buffer *rxb, | |
3055 | void *data, short len, | |
3056 | struct ieee80211_rx_status *stats, | |
3057 | u16 phy_flags) | |
3058 | { | |
3059 | struct iwl_rt_rx_hdr *iwl_rt; | |
3060 | ||
3061 | /* First cache any information we need before we overwrite | |
3062 | * the information provided in the skb from the hardware */ | |
3063 | s8 signal = stats->ssi; | |
3064 | s8 noise = 0; | |
3065 | int rate = stats->rate; | |
3066 | u64 tsf = stats->mactime; | |
3067 | __le16 phy_flags_hw = cpu_to_le16(phy_flags); | |
3068 | ||
3069 | /* We received data from the HW, so stop the watchdog */ | |
3070 | if (len > IWL_RX_BUF_SIZE - sizeof(*iwl_rt)) { | |
3071 | IWL_DEBUG_DROP("Dropping too large packet in monitor\n"); | |
3072 | return; | |
3073 | } | |
3074 | ||
3075 | /* copy the frame data to write after where the radiotap header goes */ | |
3076 | iwl_rt = (void *)rxb->skb->data; | |
3077 | memmove(iwl_rt->payload, data, len); | |
3078 | ||
3079 | iwl_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION; | |
3080 | iwl_rt->rt_hdr.it_pad = 0; /* always good to zero */ | |
3081 | ||
3082 | /* total header + data */ | |
3083 | iwl_rt->rt_hdr.it_len = cpu_to_le16(sizeof(*iwl_rt)); | |
3084 | ||
3085 | /* Set the size of the skb to the size of the frame */ | |
3086 | skb_put(rxb->skb, sizeof(*iwl_rt) + len); | |
3087 | ||
3088 | /* Big bitfield of all the fields we provide in radiotap */ | |
3089 | iwl_rt->rt_hdr.it_present = | |
3090 | cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT) | | |
3091 | (1 << IEEE80211_RADIOTAP_FLAGS) | | |
3092 | (1 << IEEE80211_RADIOTAP_RATE) | | |
3093 | (1 << IEEE80211_RADIOTAP_CHANNEL) | | |
3094 | (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) | | |
3095 | (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) | | |
3096 | (1 << IEEE80211_RADIOTAP_ANTENNA)); | |
3097 | ||
3098 | /* Zero the flags, we'll add to them as we go */ | |
3099 | iwl_rt->rt_flags = 0; | |
3100 | ||
3101 | iwl_rt->rt_tsf = cpu_to_le64(tsf); | |
3102 | ||
3103 | /* Convert to dBm */ | |
3104 | iwl_rt->rt_dbmsignal = signal; | |
3105 | iwl_rt->rt_dbmnoise = noise; | |
3106 | ||
3107 | /* Convert the channel frequency and set the flags */ | |
3108 | iwl_rt->rt_channelMHz = cpu_to_le16(stats->freq); | |
3109 | if (!(phy_flags_hw & RX_RES_PHY_FLAGS_BAND_24_MSK)) | |
3110 | iwl_rt->rt_chbitmask = | |
3111 | cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ)); | |
3112 | else if (phy_flags_hw & RX_RES_PHY_FLAGS_MOD_CCK_MSK) | |
3113 | iwl_rt->rt_chbitmask = | |
3114 | cpu_to_le16((IEEE80211_CHAN_CCK | IEEE80211_CHAN_2GHZ)); | |
3115 | else /* 802.11g */ | |
3116 | iwl_rt->rt_chbitmask = | |
3117 | cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_2GHZ)); | |
3118 | ||
3119 | rate = iwl_rate_index_from_plcp(rate); | |
3120 | if (rate == -1) | |
3121 | iwl_rt->rt_rate = 0; | |
3122 | else | |
3123 | iwl_rt->rt_rate = iwl_rates[rate].ieee; | |
3124 | ||
3125 | /* antenna number */ | |
3126 | iwl_rt->rt_antenna = | |
3127 | le16_to_cpu(phy_flags_hw & RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4; | |
3128 | ||
3129 | /* set the preamble flag if we have it */ | |
3130 | if (phy_flags_hw & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK) | |
3131 | iwl_rt->rt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; | |
3132 | ||
3133 | IWL_DEBUG_RX("Rx packet of %d bytes.\n", rxb->skb->len); | |
3134 | ||
3135 | stats->flag |= RX_FLAG_RADIOTAP; | |
3136 | ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats); | |
3137 | rxb->skb = NULL; | |
3138 | } | |
3139 | ||
3140 | ||
3141 | #define IWL_PACKET_RETRY_TIME HZ | |
3142 | ||
3143 | int is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header) | |
3144 | { | |
3145 | u16 sc = le16_to_cpu(header->seq_ctrl); | |
3146 | u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4; | |
3147 | u16 frag = sc & IEEE80211_SCTL_FRAG; | |
3148 | u16 *last_seq, *last_frag; | |
3149 | unsigned long *last_time; | |
3150 | ||
3151 | switch (priv->iw_mode) { | |
3152 | case IEEE80211_IF_TYPE_IBSS:{ | |
3153 | struct list_head *p; | |
3154 | struct iwl_ibss_seq *entry = NULL; | |
3155 | u8 *mac = header->addr2; | |
3156 | int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1); | |
3157 | ||
3158 | __list_for_each(p, &priv->ibss_mac_hash[index]) { | |
3159 | entry = | |
3160 | list_entry(p, struct iwl_ibss_seq, list); | |
3161 | if (!compare_ether_addr(entry->mac, mac)) | |
3162 | break; | |
3163 | } | |
3164 | if (p == &priv->ibss_mac_hash[index]) { | |
3165 | entry = kzalloc(sizeof(*entry), GFP_ATOMIC); | |
3166 | if (!entry) { | |
3167 | IWL_ERROR | |
3168 | ("Cannot malloc new mac entry\n"); | |
3169 | return 0; | |
3170 | } | |
3171 | memcpy(entry->mac, mac, ETH_ALEN); | |
3172 | entry->seq_num = seq; | |
3173 | entry->frag_num = frag; | |
3174 | entry->packet_time = jiffies; | |
3175 | list_add(&entry->list, | |
3176 | &priv->ibss_mac_hash[index]); | |
3177 | return 0; | |
3178 | } | |
3179 | last_seq = &entry->seq_num; | |
3180 | last_frag = &entry->frag_num; | |
3181 | last_time = &entry->packet_time; | |
3182 | break; | |
3183 | } | |
3184 | case IEEE80211_IF_TYPE_STA: | |
3185 | last_seq = &priv->last_seq_num; | |
3186 | last_frag = &priv->last_frag_num; | |
3187 | last_time = &priv->last_packet_time; | |
3188 | break; | |
3189 | default: | |
3190 | return 0; | |
3191 | } | |
3192 | if ((*last_seq == seq) && | |
3193 | time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) { | |
3194 | if (*last_frag == frag) | |
3195 | goto drop; | |
3196 | if (*last_frag + 1 != frag) | |
3197 | /* out-of-order fragment */ | |
3198 | goto drop; | |
3199 | } else | |
3200 | *last_seq = seq; | |
3201 | ||
3202 | *last_frag = frag; | |
3203 | *last_time = jiffies; | |
3204 | return 0; | |
3205 | ||
3206 | drop: | |
3207 | return 1; | |
3208 | } | |
3209 | ||
3210 | #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT | |
3211 | ||
3212 | #include "iwl-spectrum.h" | |
3213 | ||
3214 | #define BEACON_TIME_MASK_LOW 0x00FFFFFF | |
3215 | #define BEACON_TIME_MASK_HIGH 0xFF000000 | |
3216 | #define TIME_UNIT 1024 | |
3217 | ||
3218 | /* | |
3219 | * extended beacon time format | |
3220 | * time in usec will be changed into a 32-bit value in 8:24 format | |
3221 | * the high 1 byte is the beacon counts | |
3222 | * the lower 3 bytes is the time in usec within one beacon interval | |
3223 | */ | |
3224 | ||
3225 | static u32 iwl_usecs_to_beacons(u32 usec, u32 beacon_interval) | |
3226 | { | |
3227 | u32 quot; | |
3228 | u32 rem; | |
3229 | u32 interval = beacon_interval * 1024; | |
3230 | ||
3231 | if (!interval || !usec) | |
3232 | return 0; | |
3233 | ||
3234 | quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24); | |
3235 | rem = (usec % interval) & BEACON_TIME_MASK_LOW; | |
3236 | ||
3237 | return (quot << 24) + rem; | |
3238 | } | |
3239 | ||
3240 | /* base is usually what we get from ucode with each received frame, | |
3241 | * the same as HW timer counter counting down | |
3242 | */ | |
3243 | ||
3244 | static __le32 iwl_add_beacon_time(u32 base, u32 addon, u32 beacon_interval) | |
3245 | { | |
3246 | u32 base_low = base & BEACON_TIME_MASK_LOW; | |
3247 | u32 addon_low = addon & BEACON_TIME_MASK_LOW; | |
3248 | u32 interval = beacon_interval * TIME_UNIT; | |
3249 | u32 res = (base & BEACON_TIME_MASK_HIGH) + | |
3250 | (addon & BEACON_TIME_MASK_HIGH); | |
3251 | ||
3252 | if (base_low > addon_low) | |
3253 | res += base_low - addon_low; | |
3254 | else if (base_low < addon_low) { | |
3255 | res += interval + base_low - addon_low; | |
3256 | res += (1 << 24); | |
3257 | } else | |
3258 | res += (1 << 24); | |
3259 | ||
3260 | return cpu_to_le32(res); | |
3261 | } | |
3262 | ||
3263 | static int iwl_get_measurement(struct iwl_priv *priv, | |
3264 | struct ieee80211_measurement_params *params, | |
3265 | u8 type) | |
3266 | { | |
3267 | struct iwl_spectrum_cmd spectrum; | |
3268 | struct iwl_rx_packet *res; | |
3269 | struct iwl_host_cmd cmd = { | |
3270 | .id = REPLY_SPECTRUM_MEASUREMENT_CMD, | |
3271 | .data = (void *)&spectrum, | |
3272 | .meta.flags = CMD_WANT_SKB, | |
3273 | }; | |
3274 | u32 add_time = le64_to_cpu(params->start_time); | |
3275 | int rc; | |
3276 | int spectrum_resp_status; | |
3277 | int duration = le16_to_cpu(params->duration); | |
3278 | ||
3279 | if (iwl_is_associated(priv)) | |
3280 | add_time = | |
3281 | iwl_usecs_to_beacons( | |
3282 | le64_to_cpu(params->start_time) - priv->last_tsf, | |
3283 | le16_to_cpu(priv->rxon_timing.beacon_interval)); | |
3284 | ||
3285 | memset(&spectrum, 0, sizeof(spectrum)); | |
3286 | ||
3287 | spectrum.channel_count = cpu_to_le16(1); | |
3288 | spectrum.flags = | |
3289 | RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK; | |
3290 | spectrum.filter_flags = MEASUREMENT_FILTER_FLAG; | |
3291 | cmd.len = sizeof(spectrum); | |
3292 | spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len)); | |
3293 | ||
3294 | if (iwl_is_associated(priv)) | |
3295 | spectrum.start_time = | |
3296 | iwl_add_beacon_time(priv->last_beacon_time, | |
3297 | add_time, | |
3298 | le16_to_cpu(priv->rxon_timing.beacon_interval)); | |
3299 | else | |
3300 | spectrum.start_time = 0; | |
3301 | ||
3302 | spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT); | |
3303 | spectrum.channels[0].channel = params->channel; | |
3304 | spectrum.channels[0].type = type; | |
3305 | if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK) | |
3306 | spectrum.flags |= RXON_FLG_BAND_24G_MSK | | |
3307 | RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK; | |
3308 | ||
3309 | rc = iwl_send_cmd_sync(priv, &cmd); | |
3310 | if (rc) | |
3311 | return rc; | |
3312 | ||
3313 | res = (struct iwl_rx_packet *)cmd.meta.u.skb->data; | |
3314 | if (res->hdr.flags & IWL_CMD_FAILED_MSK) { | |
3315 | IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n"); | |
3316 | rc = -EIO; | |
3317 | } | |
3318 | ||
3319 | spectrum_resp_status = le16_to_cpu(res->u.spectrum.status); | |
3320 | switch (spectrum_resp_status) { | |
3321 | case 0: /* Command will be handled */ | |
3322 | if (res->u.spectrum.id != 0xff) { | |
3323 | IWL_DEBUG_INFO | |
3324 | ("Replaced existing measurement: %d\n", | |
3325 | res->u.spectrum.id); | |
3326 | priv->measurement_status &= ~MEASUREMENT_READY; | |
3327 | } | |
3328 | priv->measurement_status |= MEASUREMENT_ACTIVE; | |
3329 | rc = 0; | |
3330 | break; | |
3331 | ||
3332 | case 1: /* Command will not be handled */ | |
3333 | rc = -EAGAIN; | |
3334 | break; | |
3335 | } | |
3336 | ||
3337 | dev_kfree_skb_any(cmd.meta.u.skb); | |
3338 | ||
3339 | return rc; | |
3340 | } | |
3341 | #endif | |
3342 | ||
3343 | static void iwl_txstatus_to_ieee(struct iwl_priv *priv, | |
3344 | struct iwl_tx_info *tx_sta) | |
3345 | { | |
3346 | ||
3347 | tx_sta->status.ack_signal = 0; | |
3348 | tx_sta->status.excessive_retries = 0; | |
3349 | tx_sta->status.queue_length = 0; | |
3350 | tx_sta->status.queue_number = 0; | |
3351 | ||
3352 | if (in_interrupt()) | |
3353 | ieee80211_tx_status_irqsafe(priv->hw, | |
3354 | tx_sta->skb[0], &(tx_sta->status)); | |
3355 | else | |
3356 | ieee80211_tx_status(priv->hw, | |
3357 | tx_sta->skb[0], &(tx_sta->status)); | |
3358 | ||
3359 | tx_sta->skb[0] = NULL; | |
3360 | } | |
3361 | ||
3362 | /** | |
3363 | * iwl_tx_queue_reclaim - Reclaim Tx queue entries no more used by NIC. | |
3364 | * | |
3365 | * When FW advances 'R' index, all entries between old and | |
3366 | * new 'R' index need to be reclaimed. As result, some free space | |
3367 | * forms. If there is enough free space (> low mark), wake Tx queue. | |
3368 | */ | |
3369 | int iwl_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index) | |
3370 | { | |
3371 | struct iwl_tx_queue *txq = &priv->txq[txq_id]; | |
3372 | struct iwl_queue *q = &txq->q; | |
3373 | int nfreed = 0; | |
3374 | ||
3375 | if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) { | |
3376 | IWL_ERROR("Read index for DMA queue txq id (%d), index %d, " | |
3377 | "is out of range [0-%d] %d %d.\n", txq_id, | |
3378 | index, q->n_bd, q->first_empty, q->last_used); | |
3379 | return 0; | |
3380 | } | |
3381 | ||
3382 | for (index = iwl_queue_inc_wrap(index, q->n_bd); | |
3383 | q->last_used != index; | |
3384 | q->last_used = iwl_queue_inc_wrap(q->last_used, q->n_bd)) { | |
3385 | if (txq_id != IWL_CMD_QUEUE_NUM) { | |
3386 | iwl_txstatus_to_ieee(priv, | |
3387 | &(txq->txb[txq->q.last_used])); | |
3388 | iwl_hw_txq_free_tfd(priv, txq); | |
3389 | } else if (nfreed > 1) { | |
3390 | IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index, | |
3391 | q->first_empty, q->last_used); | |
3392 | queue_work(priv->workqueue, &priv->restart); | |
3393 | } | |
3394 | nfreed++; | |
3395 | } | |
3396 | ||
3397 | if (iwl_queue_space(q) > q->low_mark && (txq_id >= 0) && | |
3398 | (txq_id != IWL_CMD_QUEUE_NUM) && | |
3399 | priv->mac80211_registered) | |
3400 | ieee80211_wake_queue(priv->hw, txq_id); | |
3401 | ||
3402 | ||
3403 | return nfreed; | |
3404 | } | |
3405 | ||
3406 | static int iwl_is_tx_success(u32 status) | |
3407 | { | |
3408 | return (status & 0xFF) == 0x1; | |
3409 | } | |
3410 | ||
3411 | /****************************************************************************** | |
3412 | * | |
3413 | * Generic RX handler implementations | |
3414 | * | |
3415 | ******************************************************************************/ | |
3416 | static void iwl_rx_reply_tx(struct iwl_priv *priv, | |
3417 | struct iwl_rx_mem_buffer *rxb) | |
3418 | { | |
3419 | struct iwl_rx_packet *pkt = (void *)rxb->skb->data; | |
3420 | u16 sequence = le16_to_cpu(pkt->hdr.sequence); | |
3421 | int txq_id = SEQ_TO_QUEUE(sequence); | |
3422 | int index = SEQ_TO_INDEX(sequence); | |
3423 | struct iwl_tx_queue *txq = &priv->txq[txq_id]; | |
3424 | struct ieee80211_tx_status *tx_status; | |
3425 | struct iwl_tx_resp *tx_resp = (void *)&pkt->u.raw[0]; | |
3426 | u32 status = le32_to_cpu(tx_resp->status); | |
3427 | ||
3428 | if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) { | |
3429 | IWL_ERROR("Read index for DMA queue txq_id (%d) index %d " | |
3430 | "is out of range [0-%d] %d %d\n", txq_id, | |
3431 | index, txq->q.n_bd, txq->q.first_empty, | |
3432 | txq->q.last_used); | |
3433 | return; | |
3434 | } | |
3435 | ||
3436 | tx_status = &(txq->txb[txq->q.last_used].status); | |
3437 | ||
3438 | tx_status->retry_count = tx_resp->failure_frame; | |
3439 | tx_status->queue_number = status; | |
3440 | tx_status->queue_length = tx_resp->bt_kill_count; | |
3441 | tx_status->queue_length |= tx_resp->failure_rts; | |
3442 | ||
3443 | tx_status->flags = | |
3444 | iwl_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0; | |
3445 | ||
3446 | tx_status->control.tx_rate = iwl_rate_index_from_plcp(tx_resp->rate); | |
3447 | ||
3448 | IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) plcp rate %d retries %d\n", | |
3449 | txq_id, iwl_get_tx_fail_reason(status), status, | |
3450 | tx_resp->rate, tx_resp->failure_frame); | |
3451 | ||
3452 | IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index); | |
3453 | if (index != -1) | |
3454 | iwl_tx_queue_reclaim(priv, txq_id, index); | |
3455 | ||
3456 | if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK)) | |
3457 | IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n"); | |
3458 | } | |
3459 | ||
3460 | ||
3461 | static void iwl_rx_reply_alive(struct iwl_priv *priv, | |
3462 | struct iwl_rx_mem_buffer *rxb) | |
3463 | { | |
3464 | struct iwl_rx_packet *pkt = (void *)rxb->skb->data; | |
3465 | struct iwl_alive_resp *palive; | |
3466 | struct delayed_work *pwork; | |
3467 | ||
3468 | palive = &pkt->u.alive_frame; | |
3469 | ||
3470 | IWL_DEBUG_INFO("Alive ucode status 0x%08X revision " | |
3471 | "0x%01X 0x%01X\n", | |
3472 | palive->is_valid, palive->ver_type, | |
3473 | palive->ver_subtype); | |
3474 | ||
3475 | if (palive->ver_subtype == INITIALIZE_SUBTYPE) { | |
3476 | IWL_DEBUG_INFO("Initialization Alive received.\n"); | |
3477 | memcpy(&priv->card_alive_init, | |
3478 | &pkt->u.alive_frame, | |
3479 | sizeof(struct iwl_init_alive_resp)); | |
3480 | pwork = &priv->init_alive_start; | |
3481 | } else { | |
3482 | IWL_DEBUG_INFO("Runtime Alive received.\n"); | |
3483 | memcpy(&priv->card_alive, &pkt->u.alive_frame, | |
3484 | sizeof(struct iwl_alive_resp)); | |
3485 | pwork = &priv->alive_start; | |
3486 | iwl_disable_events(priv); | |
3487 | } | |
3488 | ||
3489 | /* We delay the ALIVE response by 5ms to | |
3490 | * give the HW RF Kill time to activate... */ | |
3491 | if (palive->is_valid == UCODE_VALID_OK) | |
3492 | queue_delayed_work(priv->workqueue, pwork, | |
3493 | msecs_to_jiffies(5)); | |
3494 | else | |
3495 | IWL_WARNING("uCode did not respond OK.\n"); | |
3496 | } | |
3497 | ||
3498 | static void iwl_rx_reply_add_sta(struct iwl_priv *priv, | |
3499 | struct iwl_rx_mem_buffer *rxb) | |
3500 | { | |
3501 | struct iwl_rx_packet *pkt = (void *)rxb->skb->data; | |
3502 | ||
3503 | IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status); | |
3504 | return; | |
3505 | } | |
3506 | ||
3507 | static void iwl_rx_reply_error(struct iwl_priv *priv, | |
3508 | struct iwl_rx_mem_buffer *rxb) | |
3509 | { | |
3510 | struct iwl_rx_packet *pkt = (void *)rxb->skb->data; | |
3511 | ||
3512 | IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) " | |
3513 | "seq 0x%04X ser 0x%08X\n", | |
3514 | le32_to_cpu(pkt->u.err_resp.error_type), | |
3515 | get_cmd_string(pkt->u.err_resp.cmd_id), | |
3516 | pkt->u.err_resp.cmd_id, | |
3517 | le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num), | |
3518 | le32_to_cpu(pkt->u.err_resp.error_info)); | |
3519 | } | |
3520 | ||
3521 | #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x | |
3522 | ||
3523 | static void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb) | |
3524 | { | |
3525 | struct iwl_rx_packet *pkt = (void *)rxb->skb->data; | |
3526 | struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon; | |
3527 | struct iwl_csa_notification *csa = &(pkt->u.csa_notif); | |
3528 | IWL_DEBUG_11H("CSA notif: channel %d, status %d\n", | |
3529 | le16_to_cpu(csa->channel), le32_to_cpu(csa->status)); | |
3530 | rxon->channel = csa->channel; | |
3531 | priv->staging_rxon.channel = csa->channel; | |
3532 | } | |
3533 | ||
3534 | static void iwl_rx_spectrum_measure_notif(struct iwl_priv *priv, | |
3535 | struct iwl_rx_mem_buffer *rxb) | |
3536 | { | |
3537 | #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT | |
3538 | struct iwl_rx_packet *pkt = (void *)rxb->skb->data; | |
3539 | struct iwl_spectrum_notification *report = &(pkt->u.spectrum_notif); | |
3540 | ||
3541 | if (!report->state) { | |
3542 | IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO, | |
3543 | "Spectrum Measure Notification: Start\n"); | |
3544 | return; | |
3545 | } | |
3546 | ||
3547 | memcpy(&priv->measure_report, report, sizeof(*report)); | |
3548 | priv->measurement_status |= MEASUREMENT_READY; | |
3549 | #endif | |
3550 | } | |
3551 | ||
3552 | static void iwl_rx_pm_sleep_notif(struct iwl_priv *priv, | |
3553 | struct iwl_rx_mem_buffer *rxb) | |
3554 | { | |
3555 | #ifdef CONFIG_IWLWIFI_DEBUG | |
3556 | struct iwl_rx_packet *pkt = (void *)rxb->skb->data; | |
3557 | struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif); | |
3558 | IWL_DEBUG_RX("sleep mode: %d, src: %d\n", | |
3559 | sleep->pm_sleep_mode, sleep->pm_wakeup_src); | |
3560 | #endif | |
3561 | } | |
3562 | ||
3563 | static void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv, | |
3564 | struct iwl_rx_mem_buffer *rxb) | |
3565 | { | |
3566 | struct iwl_rx_packet *pkt = (void *)rxb->skb->data; | |
3567 | IWL_DEBUG_RADIO("Dumping %d bytes of unhandled " | |
3568 | "notification for %s:\n", | |
3569 | le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd)); | |
3570 | iwl_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len)); | |
3571 | } | |
3572 | ||
3573 | static void iwl_bg_beacon_update(struct work_struct *work) | |
3574 | { | |
3575 | struct iwl_priv *priv = | |
3576 | container_of(work, struct iwl_priv, beacon_update); | |
3577 | struct sk_buff *beacon; | |
3578 | ||
3579 | /* Pull updated AP beacon from mac80211. will fail if not in AP mode */ | |
3580 | beacon = ieee80211_beacon_get(priv->hw, priv->interface_id, NULL); | |
3581 | ||
3582 | if (!beacon) { | |
3583 | IWL_ERROR("update beacon failed\n"); | |
3584 | return; | |
3585 | } | |
3586 | ||
3587 | mutex_lock(&priv->mutex); | |
3588 | /* new beacon skb is allocated every time; dispose previous.*/ | |
3589 | if (priv->ibss_beacon) | |
3590 | dev_kfree_skb(priv->ibss_beacon); | |
3591 | ||
3592 | priv->ibss_beacon = beacon; | |
3593 | mutex_unlock(&priv->mutex); | |
3594 | ||
3595 | iwl_send_beacon_cmd(priv); | |
3596 | } | |
3597 | ||
3598 | static void iwl_rx_beacon_notif(struct iwl_priv *priv, | |
3599 | struct iwl_rx_mem_buffer *rxb) | |
3600 | { | |
3601 | #ifdef CONFIG_IWLWIFI_DEBUG | |
3602 | struct iwl_rx_packet *pkt = (void *)rxb->skb->data; | |
3603 | struct iwl_beacon_notif *beacon = &(pkt->u.beacon_status); | |
3604 | u8 rate = beacon->beacon_notify_hdr.rate; | |
3605 | ||
3606 | IWL_DEBUG_RX("beacon status %x retries %d iss %d " | |
3607 | "tsf %d %d rate %d\n", | |
3608 | le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK, | |
3609 | beacon->beacon_notify_hdr.failure_frame, | |
3610 | le32_to_cpu(beacon->ibss_mgr_status), | |
3611 | le32_to_cpu(beacon->high_tsf), | |
3612 | le32_to_cpu(beacon->low_tsf), rate); | |
3613 | #endif | |
3614 | ||
3615 | if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) && | |
3616 | (!test_bit(STATUS_EXIT_PENDING, &priv->status))) | |
3617 | queue_work(priv->workqueue, &priv->beacon_update); | |
3618 | } | |
3619 | ||
3620 | /* Service response to REPLY_SCAN_CMD (0x80) */ | |
3621 | static void iwl_rx_reply_scan(struct iwl_priv *priv, | |
3622 | struct iwl_rx_mem_buffer *rxb) | |
3623 | { | |
3624 | #ifdef CONFIG_IWLWIFI_DEBUG | |
3625 | struct iwl_rx_packet *pkt = (void *)rxb->skb->data; | |
3626 | struct iwl_scanreq_notification *notif = | |
3627 | (struct iwl_scanreq_notification *)pkt->u.raw; | |
3628 | ||
3629 | IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status); | |
3630 | #endif | |
3631 | } | |
3632 | ||
3633 | /* Service SCAN_START_NOTIFICATION (0x82) */ | |
3634 | static void iwl_rx_scan_start_notif(struct iwl_priv *priv, | |
3635 | struct iwl_rx_mem_buffer *rxb) | |
3636 | { | |
3637 | struct iwl_rx_packet *pkt = (void *)rxb->skb->data; | |
3638 | struct iwl_scanstart_notification *notif = | |
3639 | (struct iwl_scanstart_notification *)pkt->u.raw; | |
3640 | priv->scan_start_tsf = le32_to_cpu(notif->tsf_low); | |
3641 | IWL_DEBUG_SCAN("Scan start: " | |
3642 | "%d [802.11%s] " | |
3643 | "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n", | |
3644 | notif->channel, | |
3645 | notif->band ? "bg" : "a", | |
3646 | notif->tsf_high, | |
3647 | notif->tsf_low, notif->status, notif->beacon_timer); | |
3648 | } | |
3649 | ||
3650 | /* Service SCAN_RESULTS_NOTIFICATION (0x83) */ | |
3651 | static void iwl_rx_scan_results_notif(struct iwl_priv *priv, | |
3652 | struct iwl_rx_mem_buffer *rxb) | |
3653 | { | |
3654 | struct iwl_rx_packet *pkt = (void *)rxb->skb->data; | |
3655 | struct iwl_scanresults_notification *notif = | |
3656 | (struct iwl_scanresults_notification *)pkt->u.raw; | |
3657 | ||
3658 | IWL_DEBUG_SCAN("Scan ch.res: " | |
3659 | "%d [802.11%s] " | |
3660 | "(TSF: 0x%08X:%08X) - %d " | |
3661 | "elapsed=%lu usec (%dms since last)\n", | |
3662 | notif->channel, | |
3663 | notif->band ? "bg" : "a", | |
3664 | le32_to_cpu(notif->tsf_high), | |
3665 | le32_to_cpu(notif->tsf_low), | |
3666 | le32_to_cpu(notif->statistics[0]), | |
3667 | le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf, | |
3668 | jiffies_to_msecs(elapsed_jiffies | |
3669 | (priv->last_scan_jiffies, jiffies))); | |
3670 | ||
3671 | priv->last_scan_jiffies = jiffies; | |
3672 | } | |
3673 | ||
3674 | /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */ | |
3675 | static void iwl_rx_scan_complete_notif(struct iwl_priv *priv, | |
3676 | struct iwl_rx_mem_buffer *rxb) | |
3677 | { | |
3678 | struct iwl_rx_packet *pkt = (void *)rxb->skb->data; | |
3679 | struct iwl_scancomplete_notification *scan_notif = (void *)pkt->u.raw; | |
3680 | ||
3681 | IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n", | |
3682 | scan_notif->scanned_channels, | |
3683 | scan_notif->tsf_low, | |
3684 | scan_notif->tsf_high, scan_notif->status); | |
3685 | ||
3686 | /* The HW is no longer scanning */ | |
3687 | clear_bit(STATUS_SCAN_HW, &priv->status); | |
3688 | ||
3689 | /* The scan completion notification came in, so kill that timer... */ | |
3690 | cancel_delayed_work(&priv->scan_check); | |
3691 | ||
3692 | IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n", | |
3693 | (priv->scan_bands == 2) ? "2.4" : "5.2", | |
3694 | jiffies_to_msecs(elapsed_jiffies | |
3695 | (priv->scan_pass_start, jiffies))); | |
3696 | ||
3697 | /* Remove this scanned band from the list | |
3698 | * of pending bands to scan */ | |
3699 | priv->scan_bands--; | |
3700 | ||
3701 | /* If a request to abort was given, or the scan did not succeed | |
3702 | * then we reset the scan state machine and terminate, | |
3703 | * re-queuing another scan if one has been requested */ | |
3704 | if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) { | |
3705 | IWL_DEBUG_INFO("Aborted scan completed.\n"); | |
3706 | clear_bit(STATUS_SCAN_ABORTING, &priv->status); | |
3707 | } else { | |
3708 | /* If there are more bands on this scan pass reschedule */ | |
3709 | if (priv->scan_bands > 0) | |
3710 | goto reschedule; | |
3711 | } | |
3712 | ||
3713 | priv->last_scan_jiffies = jiffies; | |
3714 | IWL_DEBUG_INFO("Setting scan to off\n"); | |
3715 | ||
3716 | clear_bit(STATUS_SCANNING, &priv->status); | |
3717 | ||
3718 | IWL_DEBUG_INFO("Scan took %dms\n", | |
3719 | jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies))); | |
3720 | ||
3721 | queue_work(priv->workqueue, &priv->scan_completed); | |
3722 | ||
3723 | return; | |
3724 | ||
3725 | reschedule: | |
3726 | priv->scan_pass_start = jiffies; | |
3727 | queue_work(priv->workqueue, &priv->request_scan); | |
3728 | } | |
3729 | ||
3730 | /* Handle notification from uCode that card's power state is changing | |
3731 | * due to software, hardware, or critical temperature RFKILL */ | |
3732 | static void iwl_rx_card_state_notif(struct iwl_priv *priv, | |
3733 | struct iwl_rx_mem_buffer *rxb) | |
3734 | { | |
3735 | struct iwl_rx_packet *pkt = (void *)rxb->skb->data; | |
3736 | u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags); | |
3737 | unsigned long status = priv->status; | |
3738 | ||
3739 | IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n", | |
3740 | (flags & HW_CARD_DISABLED) ? "Kill" : "On", | |
3741 | (flags & SW_CARD_DISABLED) ? "Kill" : "On"); | |
3742 | ||
3743 | iwl_write32(priv, CSR_UCODE_DRV_GP1_SET, | |
3744 | CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); | |
3745 | ||
3746 | if (flags & HW_CARD_DISABLED) | |
3747 | set_bit(STATUS_RF_KILL_HW, &priv->status); | |
3748 | else | |
3749 | clear_bit(STATUS_RF_KILL_HW, &priv->status); | |
3750 | ||
3751 | ||
3752 | if (flags & SW_CARD_DISABLED) | |
3753 | set_bit(STATUS_RF_KILL_SW, &priv->status); | |
3754 | else | |
3755 | clear_bit(STATUS_RF_KILL_SW, &priv->status); | |
3756 | ||
3757 | iwl_scan_cancel(priv); | |
3758 | ||
3759 | if ((test_bit(STATUS_RF_KILL_HW, &status) != | |
3760 | test_bit(STATUS_RF_KILL_HW, &priv->status)) || | |
3761 | (test_bit(STATUS_RF_KILL_SW, &status) != | |
3762 | test_bit(STATUS_RF_KILL_SW, &priv->status))) | |
3763 | queue_work(priv->workqueue, &priv->rf_kill); | |
3764 | else | |
3765 | wake_up_interruptible(&priv->wait_command_queue); | |
3766 | } | |
3767 | ||
3768 | /** | |
3769 | * iwl_setup_rx_handlers - Initialize Rx handler callbacks | |
3770 | * | |
3771 | * Setup the RX handlers for each of the reply types sent from the uCode | |
3772 | * to the host. | |
3773 | * | |
3774 | * This function chains into the hardware specific files for them to setup | |
3775 | * any hardware specific handlers as well. | |
3776 | */ | |
3777 | static void iwl_setup_rx_handlers(struct iwl_priv *priv) | |
3778 | { | |
3779 | priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive; | |
3780 | priv->rx_handlers[REPLY_ADD_STA] = iwl_rx_reply_add_sta; | |
3781 | priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error; | |
3782 | priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa; | |
3783 | priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] = | |
3784 | iwl_rx_spectrum_measure_notif; | |
3785 | priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif; | |
3786 | priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] = | |
3787 | iwl_rx_pm_debug_statistics_notif; | |
3788 | priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif; | |
3789 | ||
3790 | /* NOTE: iwl_rx_statistics is different based on whether | |
3791 | * the build is for the 3945 or the 4965. See the | |
3792 | * corresponding implementation in iwl-XXXX.c | |
3793 | * | |
3794 | * The same handler is used for both the REPLY to a | |
3795 | * discrete statistics request from the host as well as | |
3796 | * for the periodic statistics notification from the uCode | |
3797 | */ | |
3798 | priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_hw_rx_statistics; | |
3799 | priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_hw_rx_statistics; | |
3800 | ||
3801 | priv->rx_handlers[REPLY_SCAN_CMD] = iwl_rx_reply_scan; | |
3802 | priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl_rx_scan_start_notif; | |
3803 | priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] = | |
3804 | iwl_rx_scan_results_notif; | |
3805 | priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] = | |
3806 | iwl_rx_scan_complete_notif; | |
3807 | priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif; | |
3808 | priv->rx_handlers[REPLY_TX] = iwl_rx_reply_tx; | |
3809 | ||
3810 | /* Setup hardware specific Rx handlers */ | |
3811 | iwl_hw_rx_handler_setup(priv); | |
3812 | } | |
3813 | ||
3814 | /** | |
3815 | * iwl_tx_cmd_complete - Pull unused buffers off the queue and reclaim them | |
3816 | * @rxb: Rx buffer to reclaim | |
3817 | * | |
3818 | * If an Rx buffer has an async callback associated with it the callback | |
3819 | * will be executed. The attached skb (if present) will only be freed | |
3820 | * if the callback returns 1 | |
3821 | */ | |
3822 | static void iwl_tx_cmd_complete(struct iwl_priv *priv, | |
3823 | struct iwl_rx_mem_buffer *rxb) | |
3824 | { | |
3825 | struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data; | |
3826 | u16 sequence = le16_to_cpu(pkt->hdr.sequence); | |
3827 | int txq_id = SEQ_TO_QUEUE(sequence); | |
3828 | int index = SEQ_TO_INDEX(sequence); | |
3829 | int huge = sequence & SEQ_HUGE_FRAME; | |
3830 | int cmd_index; | |
3831 | struct iwl_cmd *cmd; | |
3832 | ||
3833 | /* If a Tx command is being handled and it isn't in the actual | |
3834 | * command queue then there a command routing bug has been introduced | |
3835 | * in the queue management code. */ | |
3836 | if (txq_id != IWL_CMD_QUEUE_NUM) | |
3837 | IWL_ERROR("Error wrong command queue %d command id 0x%X\n", | |
3838 | txq_id, pkt->hdr.cmd); | |
3839 | BUG_ON(txq_id != IWL_CMD_QUEUE_NUM); | |
3840 | ||
3841 | cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge); | |
3842 | cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index]; | |
3843 | ||
3844 | /* Input error checking is done when commands are added to queue. */ | |
3845 | if (cmd->meta.flags & CMD_WANT_SKB) { | |
3846 | cmd->meta.source->u.skb = rxb->skb; | |
3847 | rxb->skb = NULL; | |
3848 | } else if (cmd->meta.u.callback && | |
3849 | !cmd->meta.u.callback(priv, cmd, rxb->skb)) | |
3850 | rxb->skb = NULL; | |
3851 | ||
3852 | iwl_tx_queue_reclaim(priv, txq_id, index); | |
3853 | ||
3854 | if (!(cmd->meta.flags & CMD_ASYNC)) { | |
3855 | clear_bit(STATUS_HCMD_ACTIVE, &priv->status); | |
3856 | wake_up_interruptible(&priv->wait_command_queue); | |
3857 | } | |
3858 | } | |
3859 | ||
3860 | /************************** RX-FUNCTIONS ****************************/ | |
3861 | /* | |
3862 | * Rx theory of operation | |
3863 | * | |
3864 | * The host allocates 32 DMA target addresses and passes the host address | |
3865 | * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is | |
3866 | * 0 to 31 | |
3867 | * | |
3868 | * Rx Queue Indexes | |
3869 | * The host/firmware share two index registers for managing the Rx buffers. | |
3870 | * | |
3871 | * The READ index maps to the first position that the firmware may be writing | |
3872 | * to -- the driver can read up to (but not including) this position and get | |
3873 | * good data. | |
3874 | * The READ index is managed by the firmware once the card is enabled. | |
3875 | * | |
3876 | * The WRITE index maps to the last position the driver has read from -- the | |
3877 | * position preceding WRITE is the last slot the firmware can place a packet. | |
3878 | * | |
3879 | * The queue is empty (no good data) if WRITE = READ - 1, and is full if | |
3880 | * WRITE = READ. | |
3881 | * | |
3882 | * During initialization the host sets up the READ queue position to the first | |
3883 | * INDEX position, and WRITE to the last (READ - 1 wrapped) | |
3884 | * | |
3885 | * When the firmware places a packet in a buffer it will advance the READ index | |
3886 | * and fire the RX interrupt. The driver can then query the READ index and | |
3887 | * process as many packets as possible, moving the WRITE index forward as it | |
3888 | * resets the Rx queue buffers with new memory. | |
3889 | * | |
3890 | * The management in the driver is as follows: | |
3891 | * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When | |
3892 | * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled | |
01ebd063 | 3893 | * to replenish the iwl->rxq->rx_free. |
b481de9c ZY |
3894 | * + In iwl_rx_replenish (scheduled) if 'processed' != 'read' then the |
3895 | * iwl->rxq is replenished and the READ INDEX is updated (updating the | |
3896 | * 'processed' and 'read' driver indexes as well) | |
3897 | * + A received packet is processed and handed to the kernel network stack, | |
3898 | * detached from the iwl->rxq. The driver 'processed' index is updated. | |
3899 | * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free | |
3900 | * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ | |
3901 | * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there | |
3902 | * were enough free buffers and RX_STALLED is set it is cleared. | |
3903 | * | |
3904 | * | |
3905 | * Driver sequence: | |
3906 | * | |
3907 | * iwl_rx_queue_alloc() Allocates rx_free | |
3908 | * iwl_rx_replenish() Replenishes rx_free list from rx_used, and calls | |
3909 | * iwl_rx_queue_restock | |
3910 | * iwl_rx_queue_restock() Moves available buffers from rx_free into Rx | |
3911 | * queue, updates firmware pointers, and updates | |
3912 | * the WRITE index. If insufficient rx_free buffers | |
3913 | * are available, schedules iwl_rx_replenish | |
3914 | * | |
3915 | * -- enable interrupts -- | |
3916 | * ISR - iwl_rx() Detach iwl_rx_mem_buffers from pool up to the | |
3917 | * READ INDEX, detaching the SKB from the pool. | |
3918 | * Moves the packet buffer from queue to rx_used. | |
3919 | * Calls iwl_rx_queue_restock to refill any empty | |
3920 | * slots. | |
3921 | * ... | |
3922 | * | |
3923 | */ | |
3924 | ||
3925 | /** | |
3926 | * iwl_rx_queue_space - Return number of free slots available in queue. | |
3927 | */ | |
3928 | static int iwl_rx_queue_space(const struct iwl_rx_queue *q) | |
3929 | { | |
3930 | int s = q->read - q->write; | |
3931 | if (s <= 0) | |
3932 | s += RX_QUEUE_SIZE; | |
3933 | /* keep some buffer to not confuse full and empty queue */ | |
3934 | s -= 2; | |
3935 | if (s < 0) | |
3936 | s = 0; | |
3937 | return s; | |
3938 | } | |
3939 | ||
3940 | /** | |
3941 | * iwl_rx_queue_update_write_ptr - Update the write pointer for the RX queue | |
3942 | * | |
3943 | * NOTE: This function has 3945 and 4965 specific code sections | |
3944 | * but is declared in base due to the majority of the | |
3945 | * implementation being the same (only a numeric constant is | |
3946 | * different) | |
3947 | * | |
3948 | */ | |
3949 | int iwl_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl_rx_queue *q) | |
3950 | { | |
3951 | u32 reg = 0; | |
3952 | int rc = 0; | |
3953 | unsigned long flags; | |
3954 | ||
3955 | spin_lock_irqsave(&q->lock, flags); | |
3956 | ||
3957 | if (q->need_update == 0) | |
3958 | goto exit_unlock; | |
3959 | ||
3960 | if (test_bit(STATUS_POWER_PMI, &priv->status)) { | |
3961 | reg = iwl_read32(priv, CSR_UCODE_DRV_GP1); | |
3962 | ||
3963 | if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) { | |
3964 | iwl_set_bit(priv, CSR_GP_CNTRL, | |
3965 | CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); | |
3966 | goto exit_unlock; | |
3967 | } | |
3968 | ||
3969 | rc = iwl_grab_restricted_access(priv); | |
3970 | if (rc) | |
3971 | goto exit_unlock; | |
3972 | ||
3973 | iwl_write_restricted(priv, FH_RSCSR_CHNL0_WPTR, | |
3974 | q->write & ~0x7); | |
3975 | iwl_release_restricted_access(priv); | |
3976 | } else | |
3977 | iwl_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7); | |
3978 | ||
3979 | ||
3980 | q->need_update = 0; | |
3981 | ||
3982 | exit_unlock: | |
3983 | spin_unlock_irqrestore(&q->lock, flags); | |
3984 | return rc; | |
3985 | } | |
3986 | ||
3987 | /** | |
3988 | * iwl_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer pointer. | |
3989 | * | |
3990 | * NOTE: This function has 3945 and 4965 specific code paths in it. | |
3991 | */ | |
3992 | static inline __le32 iwl_dma_addr2rbd_ptr(struct iwl_priv *priv, | |
3993 | dma_addr_t dma_addr) | |
3994 | { | |
3995 | return cpu_to_le32((u32)dma_addr); | |
3996 | } | |
3997 | ||
3998 | /** | |
3999 | * iwl_rx_queue_restock - refill RX queue from pre-allocated pool | |
4000 | * | |
4001 | * If there are slots in the RX queue that need to be restocked, | |
4002 | * and we have free pre-allocated buffers, fill the ranks as much | |
4003 | * as we can pulling from rx_free. | |
4004 | * | |
4005 | * This moves the 'write' index forward to catch up with 'processed', and | |
4006 | * also updates the memory address in the firmware to reference the new | |
4007 | * target buffer. | |
4008 | */ | |
4009 | int iwl_rx_queue_restock(struct iwl_priv *priv) | |
4010 | { | |
4011 | struct iwl_rx_queue *rxq = &priv->rxq; | |
4012 | struct list_head *element; | |
4013 | struct iwl_rx_mem_buffer *rxb; | |
4014 | unsigned long flags; | |
4015 | int write, rc; | |
4016 | ||
4017 | spin_lock_irqsave(&rxq->lock, flags); | |
4018 | write = rxq->write & ~0x7; | |
4019 | while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) { | |
4020 | element = rxq->rx_free.next; | |
4021 | rxb = list_entry(element, struct iwl_rx_mem_buffer, list); | |
4022 | list_del(element); | |
4023 | rxq->bd[rxq->write] = iwl_dma_addr2rbd_ptr(priv, rxb->dma_addr); | |
4024 | rxq->queue[rxq->write] = rxb; | |
4025 | rxq->write = (rxq->write + 1) & RX_QUEUE_MASK; | |
4026 | rxq->free_count--; | |
4027 | } | |
4028 | spin_unlock_irqrestore(&rxq->lock, flags); | |
4029 | /* If the pre-allocated buffer pool is dropping low, schedule to | |
4030 | * refill it */ | |
4031 | if (rxq->free_count <= RX_LOW_WATERMARK) | |
4032 | queue_work(priv->workqueue, &priv->rx_replenish); | |
4033 | ||
4034 | ||
4035 | /* If we've added more space for the firmware to place data, tell it */ | |
4036 | if ((write != (rxq->write & ~0x7)) | |
4037 | || (abs(rxq->write - rxq->read) > 7)) { | |
4038 | spin_lock_irqsave(&rxq->lock, flags); | |
4039 | rxq->need_update = 1; | |
4040 | spin_unlock_irqrestore(&rxq->lock, flags); | |
4041 | rc = iwl_rx_queue_update_write_ptr(priv, rxq); | |
4042 | if (rc) | |
4043 | return rc; | |
4044 | } | |
4045 | ||
4046 | return 0; | |
4047 | } | |
4048 | ||
4049 | /** | |
01ebd063 | 4050 | * iwl_rx_replenish - Move all used packet from rx_used to rx_free |
b481de9c ZY |
4051 | * |
4052 | * When moving to rx_free an SKB is allocated for the slot. | |
4053 | * | |
4054 | * Also restock the Rx queue via iwl_rx_queue_restock. | |
01ebd063 | 4055 | * This is called as a scheduled work item (except for during initialization) |
b481de9c ZY |
4056 | */ |
4057 | void iwl_rx_replenish(void *data) | |
4058 | { | |
4059 | struct iwl_priv *priv = data; | |
4060 | struct iwl_rx_queue *rxq = &priv->rxq; | |
4061 | struct list_head *element; | |
4062 | struct iwl_rx_mem_buffer *rxb; | |
4063 | unsigned long flags; | |
4064 | spin_lock_irqsave(&rxq->lock, flags); | |
4065 | while (!list_empty(&rxq->rx_used)) { | |
4066 | element = rxq->rx_used.next; | |
4067 | rxb = list_entry(element, struct iwl_rx_mem_buffer, list); | |
4068 | rxb->skb = | |
4069 | alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC); | |
4070 | if (!rxb->skb) { | |
4071 | if (net_ratelimit()) | |
4072 | printk(KERN_CRIT DRV_NAME | |
4073 | ": Can not allocate SKB buffers\n"); | |
4074 | /* We don't reschedule replenish work here -- we will | |
4075 | * call the restock method and if it still needs | |
4076 | * more buffers it will schedule replenish */ | |
4077 | break; | |
4078 | } | |
4079 | priv->alloc_rxb_skb++; | |
4080 | list_del(element); | |
4081 | rxb->dma_addr = | |
4082 | pci_map_single(priv->pci_dev, rxb->skb->data, | |
4083 | IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE); | |
4084 | list_add_tail(&rxb->list, &rxq->rx_free); | |
4085 | rxq->free_count++; | |
4086 | } | |
4087 | spin_unlock_irqrestore(&rxq->lock, flags); | |
4088 | ||
4089 | spin_lock_irqsave(&priv->lock, flags); | |
4090 | iwl_rx_queue_restock(priv); | |
4091 | spin_unlock_irqrestore(&priv->lock, flags); | |
4092 | } | |
4093 | ||
4094 | /* Assumes that the skb field of the buffers in 'pool' is kept accurate. | |
4095 | * If an SKB has been detached, the POOL needs to have it's SKB set to NULL | |
4096 | * This free routine walks the list of POOL entries and if SKB is set to | |
4097 | * non NULL it is unmapped and freed | |
4098 | */ | |
4099 | void iwl_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq) | |
4100 | { | |
4101 | int i; | |
4102 | for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) { | |
4103 | if (rxq->pool[i].skb != NULL) { | |
4104 | pci_unmap_single(priv->pci_dev, | |
4105 | rxq->pool[i].dma_addr, | |
4106 | IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE); | |
4107 | dev_kfree_skb(rxq->pool[i].skb); | |
4108 | } | |
4109 | } | |
4110 | ||
4111 | pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd, | |
4112 | rxq->dma_addr); | |
4113 | rxq->bd = NULL; | |
4114 | } | |
4115 | ||
4116 | int iwl_rx_queue_alloc(struct iwl_priv *priv) | |
4117 | { | |
4118 | struct iwl_rx_queue *rxq = &priv->rxq; | |
4119 | struct pci_dev *dev = priv->pci_dev; | |
4120 | int i; | |
4121 | ||
4122 | spin_lock_init(&rxq->lock); | |
4123 | INIT_LIST_HEAD(&rxq->rx_free); | |
4124 | INIT_LIST_HEAD(&rxq->rx_used); | |
4125 | rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr); | |
4126 | if (!rxq->bd) | |
4127 | return -ENOMEM; | |
4128 | /* Fill the rx_used queue with _all_ of the Rx buffers */ | |
4129 | for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) | |
4130 | list_add_tail(&rxq->pool[i].list, &rxq->rx_used); | |
4131 | /* Set us so that we have processed and used all buffers, but have | |
4132 | * not restocked the Rx queue with fresh buffers */ | |
4133 | rxq->read = rxq->write = 0; | |
4134 | rxq->free_count = 0; | |
4135 | rxq->need_update = 0; | |
4136 | return 0; | |
4137 | } | |
4138 | ||
4139 | void iwl_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq) | |
4140 | { | |
4141 | unsigned long flags; | |
4142 | int i; | |
4143 | spin_lock_irqsave(&rxq->lock, flags); | |
4144 | INIT_LIST_HEAD(&rxq->rx_free); | |
4145 | INIT_LIST_HEAD(&rxq->rx_used); | |
4146 | /* Fill the rx_used queue with _all_ of the Rx buffers */ | |
4147 | for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) { | |
4148 | /* In the reset function, these buffers may have been allocated | |
4149 | * to an SKB, so we need to unmap and free potential storage */ | |
4150 | if (rxq->pool[i].skb != NULL) { | |
4151 | pci_unmap_single(priv->pci_dev, | |
4152 | rxq->pool[i].dma_addr, | |
4153 | IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE); | |
4154 | priv->alloc_rxb_skb--; | |
4155 | dev_kfree_skb(rxq->pool[i].skb); | |
4156 | rxq->pool[i].skb = NULL; | |
4157 | } | |
4158 | list_add_tail(&rxq->pool[i].list, &rxq->rx_used); | |
4159 | } | |
4160 | ||
4161 | /* Set us so that we have processed and used all buffers, but have | |
4162 | * not restocked the Rx queue with fresh buffers */ | |
4163 | rxq->read = rxq->write = 0; | |
4164 | rxq->free_count = 0; | |
4165 | spin_unlock_irqrestore(&rxq->lock, flags); | |
4166 | } | |
4167 | ||
4168 | /* Convert linear signal-to-noise ratio into dB */ | |
4169 | static u8 ratio2dB[100] = { | |
4170 | /* 0 1 2 3 4 5 6 7 8 9 */ | |
4171 | 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */ | |
4172 | 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */ | |
4173 | 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */ | |
4174 | 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */ | |
4175 | 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */ | |
4176 | 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */ | |
4177 | 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */ | |
4178 | 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */ | |
4179 | 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */ | |
4180 | 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */ | |
4181 | }; | |
4182 | ||
4183 | /* Calculates a relative dB value from a ratio of linear | |
4184 | * (i.e. not dB) signal levels. | |
4185 | * Conversion assumes that levels are voltages (20*log), not powers (10*log). */ | |
4186 | int iwl_calc_db_from_ratio(int sig_ratio) | |
4187 | { | |
4188 | /* Anything above 1000:1 just report as 60 dB */ | |
4189 | if (sig_ratio > 1000) | |
4190 | return 60; | |
4191 | ||
4192 | /* Above 100:1, divide by 10 and use table, | |
4193 | * add 20 dB to make up for divide by 10 */ | |
4194 | if (sig_ratio > 100) | |
4195 | return (20 + (int)ratio2dB[sig_ratio/10]); | |
4196 | ||
4197 | /* We shouldn't see this */ | |
4198 | if (sig_ratio < 1) | |
4199 | return 0; | |
4200 | ||
4201 | /* Use table for ratios 1:1 - 99:1 */ | |
4202 | return (int)ratio2dB[sig_ratio]; | |
4203 | } | |
4204 | ||
4205 | #define PERFECT_RSSI (-20) /* dBm */ | |
4206 | #define WORST_RSSI (-95) /* dBm */ | |
4207 | #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI) | |
4208 | ||
4209 | /* Calculate an indication of rx signal quality (a percentage, not dBm!). | |
4210 | * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info | |
4211 | * about formulas used below. */ | |
4212 | int iwl_calc_sig_qual(int rssi_dbm, int noise_dbm) | |
4213 | { | |
4214 | int sig_qual; | |
4215 | int degradation = PERFECT_RSSI - rssi_dbm; | |
4216 | ||
4217 | /* If we get a noise measurement, use signal-to-noise ratio (SNR) | |
4218 | * as indicator; formula is (signal dbm - noise dbm). | |
4219 | * SNR at or above 40 is a great signal (100%). | |
4220 | * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator. | |
4221 | * Weakest usable signal is usually 10 - 15 dB SNR. */ | |
4222 | if (noise_dbm) { | |
4223 | if (rssi_dbm - noise_dbm >= 40) | |
4224 | return 100; | |
4225 | else if (rssi_dbm < noise_dbm) | |
4226 | return 0; | |
4227 | sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2; | |
4228 | ||
4229 | /* Else use just the signal level. | |
4230 | * This formula is a least squares fit of data points collected and | |
4231 | * compared with a reference system that had a percentage (%) display | |
4232 | * for signal quality. */ | |
4233 | } else | |
4234 | sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation * | |
4235 | (15 * RSSI_RANGE + 62 * degradation)) / | |
4236 | (RSSI_RANGE * RSSI_RANGE); | |
4237 | ||
4238 | if (sig_qual > 100) | |
4239 | sig_qual = 100; | |
4240 | else if (sig_qual < 1) | |
4241 | sig_qual = 0; | |
4242 | ||
4243 | return sig_qual; | |
4244 | } | |
4245 | ||
4246 | /** | |
4247 | * iwl_rx_handle - Main entry function for receiving responses from the uCode | |
4248 | * | |
4249 | * Uses the priv->rx_handlers callback function array to invoke | |
4250 | * the appropriate handlers, including command responses, | |
4251 | * frame-received notifications, and other notifications. | |
4252 | */ | |
4253 | static void iwl_rx_handle(struct iwl_priv *priv) | |
4254 | { | |
4255 | struct iwl_rx_mem_buffer *rxb; | |
4256 | struct iwl_rx_packet *pkt; | |
4257 | struct iwl_rx_queue *rxq = &priv->rxq; | |
4258 | u32 r, i; | |
4259 | int reclaim; | |
4260 | unsigned long flags; | |
4261 | ||
4262 | r = iwl_hw_get_rx_read(priv); | |
4263 | i = rxq->read; | |
4264 | ||
4265 | /* Rx interrupt, but nothing sent from uCode */ | |
4266 | if (i == r) | |
4267 | IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i); | |
4268 | ||
4269 | while (i != r) { | |
4270 | rxb = rxq->queue[i]; | |
4271 | ||
4272 | /* If an RXB doesn't have a queue slot associated with it | |
4273 | * then a bug has been introduced in the queue refilling | |
4274 | * routines -- catch it here */ | |
4275 | BUG_ON(rxb == NULL); | |
4276 | ||
4277 | rxq->queue[i] = NULL; | |
4278 | ||
4279 | pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr, | |
4280 | IWL_RX_BUF_SIZE, | |
4281 | PCI_DMA_FROMDEVICE); | |
4282 | pkt = (struct iwl_rx_packet *)rxb->skb->data; | |
4283 | ||
4284 | /* Reclaim a command buffer only if this packet is a response | |
4285 | * to a (driver-originated) command. | |
4286 | * If the packet (e.g. Rx frame) originated from uCode, | |
4287 | * there is no command buffer to reclaim. | |
4288 | * Ucode should set SEQ_RX_FRAME bit if ucode-originated, | |
4289 | * but apparently a few don't get set; catch them here. */ | |
4290 | reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) && | |
4291 | (pkt->hdr.cmd != STATISTICS_NOTIFICATION) && | |
4292 | (pkt->hdr.cmd != REPLY_TX); | |
4293 | ||
4294 | /* Based on type of command response or notification, | |
4295 | * handle those that need handling via function in | |
4296 | * rx_handlers table. See iwl_setup_rx_handlers() */ | |
4297 | if (priv->rx_handlers[pkt->hdr.cmd]) { | |
4298 | IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR, | |
4299 | "r = %d, i = %d, %s, 0x%02x\n", r, i, | |
4300 | get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd); | |
4301 | priv->rx_handlers[pkt->hdr.cmd] (priv, rxb); | |
4302 | } else { | |
4303 | /* No handling needed */ | |
4304 | IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR, | |
4305 | "r %d i %d No handler needed for %s, 0x%02x\n", | |
4306 | r, i, get_cmd_string(pkt->hdr.cmd), | |
4307 | pkt->hdr.cmd); | |
4308 | } | |
4309 | ||
4310 | if (reclaim) { | |
4311 | /* Invoke any callbacks, transfer the skb to caller, | |
4312 | * and fire off the (possibly) blocking iwl_send_cmd() | |
4313 | * as we reclaim the driver command queue */ | |
4314 | if (rxb && rxb->skb) | |
4315 | iwl_tx_cmd_complete(priv, rxb); | |
4316 | else | |
4317 | IWL_WARNING("Claim null rxb?\n"); | |
4318 | } | |
4319 | ||
4320 | /* For now we just don't re-use anything. We can tweak this | |
4321 | * later to try and re-use notification packets and SKBs that | |
4322 | * fail to Rx correctly */ | |
4323 | if (rxb->skb != NULL) { | |
4324 | priv->alloc_rxb_skb--; | |
4325 | dev_kfree_skb_any(rxb->skb); | |
4326 | rxb->skb = NULL; | |
4327 | } | |
4328 | ||
4329 | pci_unmap_single(priv->pci_dev, rxb->dma_addr, | |
4330 | IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE); | |
4331 | spin_lock_irqsave(&rxq->lock, flags); | |
4332 | list_add_tail(&rxb->list, &priv->rxq.rx_used); | |
4333 | spin_unlock_irqrestore(&rxq->lock, flags); | |
4334 | i = (i + 1) & RX_QUEUE_MASK; | |
4335 | } | |
4336 | ||
4337 | /* Backtrack one entry */ | |
4338 | priv->rxq.read = i; | |
4339 | iwl_rx_queue_restock(priv); | |
4340 | } | |
4341 | ||
4342 | int iwl_tx_queue_update_write_ptr(struct iwl_priv *priv, | |
4343 | struct iwl_tx_queue *txq) | |
4344 | { | |
4345 | u32 reg = 0; | |
4346 | int rc = 0; | |
4347 | int txq_id = txq->q.id; | |
4348 | ||
4349 | if (txq->need_update == 0) | |
4350 | return rc; | |
4351 | ||
4352 | /* if we're trying to save power */ | |
4353 | if (test_bit(STATUS_POWER_PMI, &priv->status)) { | |
4354 | /* wake up nic if it's powered down ... | |
4355 | * uCode will wake up, and interrupt us again, so next | |
4356 | * time we'll skip this part. */ | |
4357 | reg = iwl_read32(priv, CSR_UCODE_DRV_GP1); | |
4358 | ||
4359 | if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) { | |
4360 | IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg); | |
4361 | iwl_set_bit(priv, CSR_GP_CNTRL, | |
4362 | CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); | |
4363 | return rc; | |
4364 | } | |
4365 | ||
4366 | /* restore this queue's parameters in nic hardware. */ | |
4367 | rc = iwl_grab_restricted_access(priv); | |
4368 | if (rc) | |
4369 | return rc; | |
4370 | iwl_write_restricted(priv, HBUS_TARG_WRPTR, | |
4371 | txq->q.first_empty | (txq_id << 8)); | |
4372 | iwl_release_restricted_access(priv); | |
4373 | ||
4374 | /* else not in power-save mode, uCode will never sleep when we're | |
4375 | * trying to tx (during RFKILL, we're not trying to tx). */ | |
4376 | } else | |
4377 | iwl_write32(priv, HBUS_TARG_WRPTR, | |
4378 | txq->q.first_empty | (txq_id << 8)); | |
4379 | ||
4380 | txq->need_update = 0; | |
4381 | ||
4382 | return rc; | |
4383 | } | |
4384 | ||
4385 | #ifdef CONFIG_IWLWIFI_DEBUG | |
4386 | static void iwl_print_rx_config_cmd(struct iwl_rxon_cmd *rxon) | |
4387 | { | |
0795af57 JP |
4388 | DECLARE_MAC_BUF(mac); |
4389 | ||
b481de9c ZY |
4390 | IWL_DEBUG_RADIO("RX CONFIG:\n"); |
4391 | iwl_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon)); | |
4392 | IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel)); | |
4393 | IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags)); | |
4394 | IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n", | |
4395 | le32_to_cpu(rxon->filter_flags)); | |
4396 | IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type); | |
4397 | IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n", | |
4398 | rxon->ofdm_basic_rates); | |
4399 | IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates); | |
0795af57 JP |
4400 | IWL_DEBUG_RADIO("u8[6] node_addr: %s\n", |
4401 | print_mac(mac, rxon->node_addr)); | |
4402 | IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n", | |
4403 | print_mac(mac, rxon->bssid_addr)); | |
b481de9c ZY |
4404 | IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id)); |
4405 | } | |
4406 | #endif | |
4407 | ||
4408 | static void iwl_enable_interrupts(struct iwl_priv *priv) | |
4409 | { | |
4410 | IWL_DEBUG_ISR("Enabling interrupts\n"); | |
4411 | set_bit(STATUS_INT_ENABLED, &priv->status); | |
4412 | iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK); | |
4413 | } | |
4414 | ||
4415 | static inline void iwl_disable_interrupts(struct iwl_priv *priv) | |
4416 | { | |
4417 | clear_bit(STATUS_INT_ENABLED, &priv->status); | |
4418 | ||
4419 | /* disable interrupts from uCode/NIC to host */ | |
4420 | iwl_write32(priv, CSR_INT_MASK, 0x00000000); | |
4421 | ||
4422 | /* acknowledge/clear/reset any interrupts still pending | |
4423 | * from uCode or flow handler (Rx/Tx DMA) */ | |
4424 | iwl_write32(priv, CSR_INT, 0xffffffff); | |
4425 | iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff); | |
4426 | IWL_DEBUG_ISR("Disabled interrupts\n"); | |
4427 | } | |
4428 | ||
4429 | static const char *desc_lookup(int i) | |
4430 | { | |
4431 | switch (i) { | |
4432 | case 1: | |
4433 | return "FAIL"; | |
4434 | case 2: | |
4435 | return "BAD_PARAM"; | |
4436 | case 3: | |
4437 | return "BAD_CHECKSUM"; | |
4438 | case 4: | |
4439 | return "NMI_INTERRUPT"; | |
4440 | case 5: | |
4441 | return "SYSASSERT"; | |
4442 | case 6: | |
4443 | return "FATAL_ERROR"; | |
4444 | } | |
4445 | ||
4446 | return "UNKNOWN"; | |
4447 | } | |
4448 | ||
4449 | #define ERROR_START_OFFSET (1 * sizeof(u32)) | |
4450 | #define ERROR_ELEM_SIZE (7 * sizeof(u32)) | |
4451 | ||
4452 | static void iwl_dump_nic_error_log(struct iwl_priv *priv) | |
4453 | { | |
4454 | u32 i; | |
4455 | u32 desc, time, count, base, data1; | |
4456 | u32 blink1, blink2, ilink1, ilink2; | |
4457 | int rc; | |
4458 | ||
4459 | base = le32_to_cpu(priv->card_alive.error_event_table_ptr); | |
4460 | ||
4461 | if (!iwl_hw_valid_rtc_data_addr(base)) { | |
4462 | IWL_ERROR("Not valid error log pointer 0x%08X\n", base); | |
4463 | return; | |
4464 | } | |
4465 | ||
4466 | rc = iwl_grab_restricted_access(priv); | |
4467 | if (rc) { | |
4468 | IWL_WARNING("Can not read from adapter at this time.\n"); | |
4469 | return; | |
4470 | } | |
4471 | ||
4472 | count = iwl_read_restricted_mem(priv, base); | |
4473 | ||
4474 | if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) { | |
4475 | IWL_ERROR("Start IWL Error Log Dump:\n"); | |
4476 | IWL_ERROR("Status: 0x%08lX, Config: %08X count: %d\n", | |
4477 | priv->status, priv->config, count); | |
4478 | } | |
4479 | ||
4480 | IWL_ERROR("Desc Time asrtPC blink2 " | |
4481 | "ilink1 nmiPC Line\n"); | |
4482 | for (i = ERROR_START_OFFSET; | |
4483 | i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET; | |
4484 | i += ERROR_ELEM_SIZE) { | |
4485 | desc = iwl_read_restricted_mem(priv, base + i); | |
4486 | time = | |
4487 | iwl_read_restricted_mem(priv, base + i + 1 * sizeof(u32)); | |
4488 | blink1 = | |
4489 | iwl_read_restricted_mem(priv, base + i + 2 * sizeof(u32)); | |
4490 | blink2 = | |
4491 | iwl_read_restricted_mem(priv, base + i + 3 * sizeof(u32)); | |
4492 | ilink1 = | |
4493 | iwl_read_restricted_mem(priv, base + i + 4 * sizeof(u32)); | |
4494 | ilink2 = | |
4495 | iwl_read_restricted_mem(priv, base + i + 5 * sizeof(u32)); | |
4496 | data1 = | |
4497 | iwl_read_restricted_mem(priv, base + i + 6 * sizeof(u32)); | |
4498 | ||
4499 | IWL_ERROR | |
4500 | ("%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n", | |
4501 | desc_lookup(desc), desc, time, blink1, blink2, | |
4502 | ilink1, ilink2, data1); | |
4503 | } | |
4504 | ||
4505 | iwl_release_restricted_access(priv); | |
4506 | ||
4507 | } | |
4508 | ||
4509 | #define EVENT_START_OFFSET (4 * sizeof(u32)) | |
4510 | ||
4511 | /** | |
4512 | * iwl_print_event_log - Dump error event log to syslog | |
4513 | * | |
4514 | * NOTE: Must be called with iwl_grab_restricted_access() already obtained! | |
4515 | */ | |
4516 | static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx, | |
4517 | u32 num_events, u32 mode) | |
4518 | { | |
4519 | u32 i; | |
4520 | u32 base; /* SRAM byte address of event log header */ | |
4521 | u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */ | |
4522 | u32 ptr; /* SRAM byte address of log data */ | |
4523 | u32 ev, time, data; /* event log data */ | |
4524 | ||
4525 | if (num_events == 0) | |
4526 | return; | |
4527 | ||
4528 | base = le32_to_cpu(priv->card_alive.log_event_table_ptr); | |
4529 | ||
4530 | if (mode == 0) | |
4531 | event_size = 2 * sizeof(u32); | |
4532 | else | |
4533 | event_size = 3 * sizeof(u32); | |
4534 | ||
4535 | ptr = base + EVENT_START_OFFSET + (start_idx * event_size); | |
4536 | ||
4537 | /* "time" is actually "data" for mode 0 (no timestamp). | |
4538 | * place event id # at far right for easier visual parsing. */ | |
4539 | for (i = 0; i < num_events; i++) { | |
4540 | ev = iwl_read_restricted_mem(priv, ptr); | |
4541 | ptr += sizeof(u32); | |
4542 | time = iwl_read_restricted_mem(priv, ptr); | |
4543 | ptr += sizeof(u32); | |
4544 | if (mode == 0) | |
4545 | IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */ | |
4546 | else { | |
4547 | data = iwl_read_restricted_mem(priv, ptr); | |
4548 | ptr += sizeof(u32); | |
4549 | IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev); | |
4550 | } | |
4551 | } | |
4552 | } | |
4553 | ||
4554 | static void iwl_dump_nic_event_log(struct iwl_priv *priv) | |
4555 | { | |
4556 | int rc; | |
4557 | u32 base; /* SRAM byte address of event log header */ | |
4558 | u32 capacity; /* event log capacity in # entries */ | |
4559 | u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */ | |
4560 | u32 num_wraps; /* # times uCode wrapped to top of log */ | |
4561 | u32 next_entry; /* index of next entry to be written by uCode */ | |
4562 | u32 size; /* # entries that we'll print */ | |
4563 | ||
4564 | base = le32_to_cpu(priv->card_alive.log_event_table_ptr); | |
4565 | if (!iwl_hw_valid_rtc_data_addr(base)) { | |
4566 | IWL_ERROR("Invalid event log pointer 0x%08X\n", base); | |
4567 | return; | |
4568 | } | |
4569 | ||
4570 | rc = iwl_grab_restricted_access(priv); | |
4571 | if (rc) { | |
4572 | IWL_WARNING("Can not read from adapter at this time.\n"); | |
4573 | return; | |
4574 | } | |
4575 | ||
4576 | /* event log header */ | |
4577 | capacity = iwl_read_restricted_mem(priv, base); | |
4578 | mode = iwl_read_restricted_mem(priv, base + (1 * sizeof(u32))); | |
4579 | num_wraps = iwl_read_restricted_mem(priv, base + (2 * sizeof(u32))); | |
4580 | next_entry = iwl_read_restricted_mem(priv, base + (3 * sizeof(u32))); | |
4581 | ||
4582 | size = num_wraps ? capacity : next_entry; | |
4583 | ||
4584 | /* bail out if nothing in log */ | |
4585 | if (size == 0) { | |
583fab37 | 4586 | IWL_ERROR("Start IWL Event Log Dump: nothing in log\n"); |
b481de9c ZY |
4587 | iwl_release_restricted_access(priv); |
4588 | return; | |
4589 | } | |
4590 | ||
583fab37 | 4591 | IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n", |
b481de9c ZY |
4592 | size, num_wraps); |
4593 | ||
4594 | /* if uCode has wrapped back to top of log, start at the oldest entry, | |
4595 | * i.e the next one that uCode would fill. */ | |
4596 | if (num_wraps) | |
4597 | iwl_print_event_log(priv, next_entry, | |
4598 | capacity - next_entry, mode); | |
4599 | ||
4600 | /* (then/else) start at top of log */ | |
4601 | iwl_print_event_log(priv, 0, next_entry, mode); | |
4602 | ||
4603 | iwl_release_restricted_access(priv); | |
4604 | } | |
4605 | ||
4606 | /** | |
4607 | * iwl_irq_handle_error - called for HW or SW error interrupt from card | |
4608 | */ | |
4609 | static void iwl_irq_handle_error(struct iwl_priv *priv) | |
4610 | { | |
4611 | /* Set the FW error flag -- cleared on iwl_down */ | |
4612 | set_bit(STATUS_FW_ERROR, &priv->status); | |
4613 | ||
4614 | /* Cancel currently queued command. */ | |
4615 | clear_bit(STATUS_HCMD_ACTIVE, &priv->status); | |
4616 | ||
4617 | #ifdef CONFIG_IWLWIFI_DEBUG | |
4618 | if (iwl_debug_level & IWL_DL_FW_ERRORS) { | |
4619 | iwl_dump_nic_error_log(priv); | |
4620 | iwl_dump_nic_event_log(priv); | |
4621 | iwl_print_rx_config_cmd(&priv->staging_rxon); | |
4622 | } | |
4623 | #endif | |
4624 | ||
4625 | wake_up_interruptible(&priv->wait_command_queue); | |
4626 | ||
4627 | /* Keep the restart process from trying to send host | |
4628 | * commands by clearing the INIT status bit */ | |
4629 | clear_bit(STATUS_READY, &priv->status); | |
4630 | ||
4631 | if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) { | |
4632 | IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS, | |
4633 | "Restarting adapter due to uCode error.\n"); | |
4634 | ||
4635 | if (iwl_is_associated(priv)) { | |
4636 | memcpy(&priv->recovery_rxon, &priv->active_rxon, | |
4637 | sizeof(priv->recovery_rxon)); | |
4638 | priv->error_recovering = 1; | |
4639 | } | |
4640 | queue_work(priv->workqueue, &priv->restart); | |
4641 | } | |
4642 | } | |
4643 | ||
4644 | static void iwl_error_recovery(struct iwl_priv *priv) | |
4645 | { | |
4646 | unsigned long flags; | |
4647 | ||
4648 | memcpy(&priv->staging_rxon, &priv->recovery_rxon, | |
4649 | sizeof(priv->staging_rxon)); | |
4650 | priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; | |
4651 | iwl_commit_rxon(priv); | |
4652 | ||
556f8db7 | 4653 | iwl_add_station(priv, priv->bssid, 1, 0); |
b481de9c ZY |
4654 | |
4655 | spin_lock_irqsave(&priv->lock, flags); | |
4656 | priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id); | |
4657 | priv->error_recovering = 0; | |
4658 | spin_unlock_irqrestore(&priv->lock, flags); | |
4659 | } | |
4660 | ||
4661 | static void iwl_irq_tasklet(struct iwl_priv *priv) | |
4662 | { | |
4663 | u32 inta, handled = 0; | |
4664 | u32 inta_fh; | |
4665 | unsigned long flags; | |
4666 | #ifdef CONFIG_IWLWIFI_DEBUG | |
4667 | u32 inta_mask; | |
4668 | #endif | |
4669 | ||
4670 | spin_lock_irqsave(&priv->lock, flags); | |
4671 | ||
4672 | /* Ack/clear/reset pending uCode interrupts. | |
4673 | * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS, | |
4674 | * and will clear only when CSR_FH_INT_STATUS gets cleared. */ | |
4675 | inta = iwl_read32(priv, CSR_INT); | |
4676 | iwl_write32(priv, CSR_INT, inta); | |
4677 | ||
4678 | /* Ack/clear/reset pending flow-handler (DMA) interrupts. | |
4679 | * Any new interrupts that happen after this, either while we're | |
4680 | * in this tasklet, or later, will show up in next ISR/tasklet. */ | |
4681 | inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS); | |
4682 | iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh); | |
4683 | ||
4684 | #ifdef CONFIG_IWLWIFI_DEBUG | |
4685 | if (iwl_debug_level & IWL_DL_ISR) { | |
4686 | inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */ | |
4687 | IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n", | |
4688 | inta, inta_mask, inta_fh); | |
4689 | } | |
4690 | #endif | |
4691 | ||
4692 | /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not | |
4693 | * atomic, make sure that inta covers all the interrupts that | |
4694 | * we've discovered, even if FH interrupt came in just after | |
4695 | * reading CSR_INT. */ | |
4696 | if (inta_fh & CSR_FH_INT_RX_MASK) | |
4697 | inta |= CSR_INT_BIT_FH_RX; | |
4698 | if (inta_fh & CSR_FH_INT_TX_MASK) | |
4699 | inta |= CSR_INT_BIT_FH_TX; | |
4700 | ||
4701 | /* Now service all interrupt bits discovered above. */ | |
4702 | if (inta & CSR_INT_BIT_HW_ERR) { | |
4703 | IWL_ERROR("Microcode HW error detected. Restarting.\n"); | |
4704 | ||
4705 | /* Tell the device to stop sending interrupts */ | |
4706 | iwl_disable_interrupts(priv); | |
4707 | ||
4708 | iwl_irq_handle_error(priv); | |
4709 | ||
4710 | handled |= CSR_INT_BIT_HW_ERR; | |
4711 | ||
4712 | spin_unlock_irqrestore(&priv->lock, flags); | |
4713 | ||
4714 | return; | |
4715 | } | |
4716 | ||
4717 | #ifdef CONFIG_IWLWIFI_DEBUG | |
4718 | if (iwl_debug_level & (IWL_DL_ISR)) { | |
4719 | /* NIC fires this, but we don't use it, redundant with WAKEUP */ | |
4720 | if (inta & CSR_INT_BIT_MAC_CLK_ACTV) | |
4721 | IWL_DEBUG_ISR("Microcode started or stopped.\n"); | |
4722 | ||
4723 | /* Alive notification via Rx interrupt will do the real work */ | |
4724 | if (inta & CSR_INT_BIT_ALIVE) | |
4725 | IWL_DEBUG_ISR("Alive interrupt\n"); | |
4726 | } | |
4727 | #endif | |
4728 | /* Safely ignore these bits for debug checks below */ | |
4729 | inta &= ~(CSR_INT_BIT_MAC_CLK_ACTV | CSR_INT_BIT_ALIVE); | |
4730 | ||
4731 | /* HW RF KILL switch toggled (4965 only) */ | |
4732 | if (inta & CSR_INT_BIT_RF_KILL) { | |
4733 | int hw_rf_kill = 0; | |
4734 | if (!(iwl_read32(priv, CSR_GP_CNTRL) & | |
4735 | CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)) | |
4736 | hw_rf_kill = 1; | |
4737 | ||
4738 | IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR, | |
4739 | "RF_KILL bit toggled to %s.\n", | |
4740 | hw_rf_kill ? "disable radio":"enable radio"); | |
4741 | ||
4742 | /* Queue restart only if RF_KILL switch was set to "kill" | |
4743 | * when we loaded driver, and is now set to "enable". | |
4744 | * After we're Alive, RF_KILL gets handled by | |
4745 | * iwl_rx_card_state_notif() */ | |
53e49093 ZY |
4746 | if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) { |
4747 | clear_bit(STATUS_RF_KILL_HW, &priv->status); | |
b481de9c | 4748 | queue_work(priv->workqueue, &priv->restart); |
53e49093 | 4749 | } |
b481de9c ZY |
4750 | |
4751 | handled |= CSR_INT_BIT_RF_KILL; | |
4752 | } | |
4753 | ||
4754 | /* Chip got too hot and stopped itself (4965 only) */ | |
4755 | if (inta & CSR_INT_BIT_CT_KILL) { | |
4756 | IWL_ERROR("Microcode CT kill error detected.\n"); | |
4757 | handled |= CSR_INT_BIT_CT_KILL; | |
4758 | } | |
4759 | ||
4760 | /* Error detected by uCode */ | |
4761 | if (inta & CSR_INT_BIT_SW_ERR) { | |
4762 | IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n", | |
4763 | inta); | |
4764 | iwl_irq_handle_error(priv); | |
4765 | handled |= CSR_INT_BIT_SW_ERR; | |
4766 | } | |
4767 | ||
4768 | /* uCode wakes up after power-down sleep */ | |
4769 | if (inta & CSR_INT_BIT_WAKEUP) { | |
4770 | IWL_DEBUG_ISR("Wakeup interrupt\n"); | |
4771 | iwl_rx_queue_update_write_ptr(priv, &priv->rxq); | |
4772 | iwl_tx_queue_update_write_ptr(priv, &priv->txq[0]); | |
4773 | iwl_tx_queue_update_write_ptr(priv, &priv->txq[1]); | |
4774 | iwl_tx_queue_update_write_ptr(priv, &priv->txq[2]); | |
4775 | iwl_tx_queue_update_write_ptr(priv, &priv->txq[3]); | |
4776 | iwl_tx_queue_update_write_ptr(priv, &priv->txq[4]); | |
4777 | iwl_tx_queue_update_write_ptr(priv, &priv->txq[5]); | |
4778 | ||
4779 | handled |= CSR_INT_BIT_WAKEUP; | |
4780 | } | |
4781 | ||
4782 | /* All uCode command responses, including Tx command responses, | |
4783 | * Rx "responses" (frame-received notification), and other | |
4784 | * notifications from uCode come through here*/ | |
4785 | if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) { | |
4786 | iwl_rx_handle(priv); | |
4787 | handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX); | |
4788 | } | |
4789 | ||
4790 | if (inta & CSR_INT_BIT_FH_TX) { | |
4791 | IWL_DEBUG_ISR("Tx interrupt\n"); | |
4792 | ||
4793 | iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6)); | |
4794 | if (!iwl_grab_restricted_access(priv)) { | |
4795 | iwl_write_restricted(priv, | |
4796 | FH_TCSR_CREDIT | |
4797 | (ALM_FH_SRVC_CHNL), 0x0); | |
4798 | iwl_release_restricted_access(priv); | |
4799 | } | |
4800 | handled |= CSR_INT_BIT_FH_TX; | |
4801 | } | |
4802 | ||
4803 | if (inta & ~handled) | |
4804 | IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled); | |
4805 | ||
4806 | if (inta & ~CSR_INI_SET_MASK) { | |
4807 | IWL_WARNING("Disabled INTA bits 0x%08x were pending\n", | |
4808 | inta & ~CSR_INI_SET_MASK); | |
4809 | IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh); | |
4810 | } | |
4811 | ||
4812 | /* Re-enable all interrupts */ | |
4813 | iwl_enable_interrupts(priv); | |
4814 | ||
4815 | #ifdef CONFIG_IWLWIFI_DEBUG | |
4816 | if (iwl_debug_level & (IWL_DL_ISR)) { | |
4817 | inta = iwl_read32(priv, CSR_INT); | |
4818 | inta_mask = iwl_read32(priv, CSR_INT_MASK); | |
4819 | inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS); | |
4820 | IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, " | |
4821 | "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags); | |
4822 | } | |
4823 | #endif | |
4824 | spin_unlock_irqrestore(&priv->lock, flags); | |
4825 | } | |
4826 | ||
4827 | static irqreturn_t iwl_isr(int irq, void *data) | |
4828 | { | |
4829 | struct iwl_priv *priv = data; | |
4830 | u32 inta, inta_mask; | |
4831 | u32 inta_fh; | |
4832 | if (!priv) | |
4833 | return IRQ_NONE; | |
4834 | ||
4835 | spin_lock(&priv->lock); | |
4836 | ||
4837 | /* Disable (but don't clear!) interrupts here to avoid | |
4838 | * back-to-back ISRs and sporadic interrupts from our NIC. | |
4839 | * If we have something to service, the tasklet will re-enable ints. | |
4840 | * If we *don't* have something, we'll re-enable before leaving here. */ | |
4841 | inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */ | |
4842 | iwl_write32(priv, CSR_INT_MASK, 0x00000000); | |
4843 | ||
4844 | /* Discover which interrupts are active/pending */ | |
4845 | inta = iwl_read32(priv, CSR_INT); | |
4846 | inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS); | |
4847 | ||
4848 | /* Ignore interrupt if there's nothing in NIC to service. | |
4849 | * This may be due to IRQ shared with another device, | |
4850 | * or due to sporadic interrupts thrown from our NIC. */ | |
4851 | if (!inta && !inta_fh) { | |
4852 | IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n"); | |
4853 | goto none; | |
4854 | } | |
4855 | ||
4856 | if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) { | |
4857 | /* Hardware disappeared */ | |
4858 | IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta); | |
cb4da1a3 | 4859 | goto unplugged; |
b481de9c ZY |
4860 | } |
4861 | ||
4862 | IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n", | |
4863 | inta, inta_mask, inta_fh); | |
4864 | ||
4865 | /* iwl_irq_tasklet() will service interrupts and re-enable them */ | |
4866 | tasklet_schedule(&priv->irq_tasklet); | |
cb4da1a3 | 4867 | unplugged: |
b481de9c ZY |
4868 | spin_unlock(&priv->lock); |
4869 | ||
4870 | return IRQ_HANDLED; | |
4871 | ||
4872 | none: | |
4873 | /* re-enable interrupts here since we don't have anything to service. */ | |
4874 | iwl_enable_interrupts(priv); | |
4875 | spin_unlock(&priv->lock); | |
4876 | return IRQ_NONE; | |
4877 | } | |
4878 | ||
4879 | /************************** EEPROM BANDS **************************** | |
4880 | * | |
4881 | * The iwl_eeprom_band definitions below provide the mapping from the | |
4882 | * EEPROM contents to the specific channel number supported for each | |
4883 | * band. | |
4884 | * | |
4885 | * For example, iwl_priv->eeprom.band_3_channels[4] from the band_3 | |
4886 | * definition below maps to physical channel 42 in the 5.2GHz spectrum. | |
4887 | * The specific geography and calibration information for that channel | |
4888 | * is contained in the eeprom map itself. | |
4889 | * | |
4890 | * During init, we copy the eeprom information and channel map | |
4891 | * information into priv->channel_info_24/52 and priv->channel_map_24/52 | |
4892 | * | |
4893 | * channel_map_24/52 provides the index in the channel_info array for a | |
4894 | * given channel. We have to have two separate maps as there is channel | |
4895 | * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and | |
4896 | * band_2 | |
4897 | * | |
4898 | * A value of 0xff stored in the channel_map indicates that the channel | |
4899 | * is not supported by the hardware at all. | |
4900 | * | |
4901 | * A value of 0xfe in the channel_map indicates that the channel is not | |
4902 | * valid for Tx with the current hardware. This means that | |
4903 | * while the system can tune and receive on a given channel, it may not | |
4904 | * be able to associate or transmit any frames on that | |
4905 | * channel. There is no corresponding channel information for that | |
4906 | * entry. | |
4907 | * | |
4908 | *********************************************************************/ | |
4909 | ||
4910 | /* 2.4 GHz */ | |
4911 | static const u8 iwl_eeprom_band_1[14] = { | |
4912 | 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 | |
4913 | }; | |
4914 | ||
4915 | /* 5.2 GHz bands */ | |
4916 | static const u8 iwl_eeprom_band_2[] = { | |
4917 | 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16 | |
4918 | }; | |
4919 | ||
4920 | static const u8 iwl_eeprom_band_3[] = { /* 5205-5320MHz */ | |
4921 | 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64 | |
4922 | }; | |
4923 | ||
4924 | static const u8 iwl_eeprom_band_4[] = { /* 5500-5700MHz */ | |
4925 | 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140 | |
4926 | }; | |
4927 | ||
4928 | static const u8 iwl_eeprom_band_5[] = { /* 5725-5825MHz */ | |
4929 | 145, 149, 153, 157, 161, 165 | |
4930 | }; | |
4931 | ||
4932 | static void iwl_init_band_reference(const struct iwl_priv *priv, int band, | |
4933 | int *eeprom_ch_count, | |
4934 | const struct iwl_eeprom_channel | |
4935 | **eeprom_ch_info, | |
4936 | const u8 **eeprom_ch_index) | |
4937 | { | |
4938 | switch (band) { | |
4939 | case 1: /* 2.4GHz band */ | |
4940 | *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_1); | |
4941 | *eeprom_ch_info = priv->eeprom.band_1_channels; | |
4942 | *eeprom_ch_index = iwl_eeprom_band_1; | |
4943 | break; | |
4944 | case 2: /* 5.2GHz band */ | |
4945 | *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_2); | |
4946 | *eeprom_ch_info = priv->eeprom.band_2_channels; | |
4947 | *eeprom_ch_index = iwl_eeprom_band_2; | |
4948 | break; | |
4949 | case 3: /* 5.2GHz band */ | |
4950 | *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_3); | |
4951 | *eeprom_ch_info = priv->eeprom.band_3_channels; | |
4952 | *eeprom_ch_index = iwl_eeprom_band_3; | |
4953 | break; | |
4954 | case 4: /* 5.2GHz band */ | |
4955 | *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_4); | |
4956 | *eeprom_ch_info = priv->eeprom.band_4_channels; | |
4957 | *eeprom_ch_index = iwl_eeprom_band_4; | |
4958 | break; | |
4959 | case 5: /* 5.2GHz band */ | |
4960 | *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_5); | |
4961 | *eeprom_ch_info = priv->eeprom.band_5_channels; | |
4962 | *eeprom_ch_index = iwl_eeprom_band_5; | |
4963 | break; | |
4964 | default: | |
4965 | BUG(); | |
4966 | return; | |
4967 | } | |
4968 | } | |
4969 | ||
4970 | const struct iwl_channel_info *iwl_get_channel_info(const struct iwl_priv *priv, | |
4971 | int phymode, u16 channel) | |
4972 | { | |
4973 | int i; | |
4974 | ||
4975 | switch (phymode) { | |
4976 | case MODE_IEEE80211A: | |
4977 | for (i = 14; i < priv->channel_count; i++) { | |
4978 | if (priv->channel_info[i].channel == channel) | |
4979 | return &priv->channel_info[i]; | |
4980 | } | |
4981 | break; | |
4982 | ||
4983 | case MODE_IEEE80211B: | |
4984 | case MODE_IEEE80211G: | |
4985 | if (channel >= 1 && channel <= 14) | |
4986 | return &priv->channel_info[channel - 1]; | |
4987 | break; | |
4988 | ||
4989 | } | |
4990 | ||
4991 | return NULL; | |
4992 | } | |
4993 | ||
4994 | #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \ | |
4995 | ? # x " " : "") | |
4996 | ||
4997 | static int iwl_init_channel_map(struct iwl_priv *priv) | |
4998 | { | |
4999 | int eeprom_ch_count = 0; | |
5000 | const u8 *eeprom_ch_index = NULL; | |
5001 | const struct iwl_eeprom_channel *eeprom_ch_info = NULL; | |
5002 | int band, ch; | |
5003 | struct iwl_channel_info *ch_info; | |
5004 | ||
5005 | if (priv->channel_count) { | |
5006 | IWL_DEBUG_INFO("Channel map already initialized.\n"); | |
5007 | return 0; | |
5008 | } | |
5009 | ||
5010 | if (priv->eeprom.version < 0x2f) { | |
5011 | IWL_WARNING("Unsupported EEPROM version: 0x%04X\n", | |
5012 | priv->eeprom.version); | |
5013 | return -EINVAL; | |
5014 | } | |
5015 | ||
5016 | IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n"); | |
5017 | ||
5018 | priv->channel_count = | |
5019 | ARRAY_SIZE(iwl_eeprom_band_1) + | |
5020 | ARRAY_SIZE(iwl_eeprom_band_2) + | |
5021 | ARRAY_SIZE(iwl_eeprom_band_3) + | |
5022 | ARRAY_SIZE(iwl_eeprom_band_4) + | |
5023 | ARRAY_SIZE(iwl_eeprom_band_5); | |
5024 | ||
5025 | IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count); | |
5026 | ||
5027 | priv->channel_info = kzalloc(sizeof(struct iwl_channel_info) * | |
5028 | priv->channel_count, GFP_KERNEL); | |
5029 | if (!priv->channel_info) { | |
5030 | IWL_ERROR("Could not allocate channel_info\n"); | |
5031 | priv->channel_count = 0; | |
5032 | return -ENOMEM; | |
5033 | } | |
5034 | ||
5035 | ch_info = priv->channel_info; | |
5036 | ||
5037 | /* Loop through the 5 EEPROM bands adding them in order to the | |
5038 | * channel map we maintain (that contains additional information than | |
5039 | * what just in the EEPROM) */ | |
5040 | for (band = 1; band <= 5; band++) { | |
5041 | ||
5042 | iwl_init_band_reference(priv, band, &eeprom_ch_count, | |
5043 | &eeprom_ch_info, &eeprom_ch_index); | |
5044 | ||
5045 | /* Loop through each band adding each of the channels */ | |
5046 | for (ch = 0; ch < eeprom_ch_count; ch++) { | |
5047 | ch_info->channel = eeprom_ch_index[ch]; | |
5048 | ch_info->phymode = (band == 1) ? MODE_IEEE80211B : | |
5049 | MODE_IEEE80211A; | |
5050 | ||
5051 | /* permanently store EEPROM's channel regulatory flags | |
5052 | * and max power in channel info database. */ | |
5053 | ch_info->eeprom = eeprom_ch_info[ch]; | |
5054 | ||
5055 | /* Copy the run-time flags so they are there even on | |
5056 | * invalid channels */ | |
5057 | ch_info->flags = eeprom_ch_info[ch].flags; | |
5058 | ||
5059 | if (!(is_channel_valid(ch_info))) { | |
5060 | IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - " | |
5061 | "No traffic\n", | |
5062 | ch_info->channel, | |
5063 | ch_info->flags, | |
5064 | is_channel_a_band(ch_info) ? | |
5065 | "5.2" : "2.4"); | |
5066 | ch_info++; | |
5067 | continue; | |
5068 | } | |
5069 | ||
5070 | /* Initialize regulatory-based run-time data */ | |
5071 | ch_info->max_power_avg = ch_info->curr_txpow = | |
5072 | eeprom_ch_info[ch].max_power_avg; | |
5073 | ch_info->scan_power = eeprom_ch_info[ch].max_power_avg; | |
5074 | ch_info->min_power = 0; | |
5075 | ||
5076 | IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x" | |
5077 | " %ddBm): Ad-Hoc %ssupported\n", | |
5078 | ch_info->channel, | |
5079 | is_channel_a_band(ch_info) ? | |
5080 | "5.2" : "2.4", | |
5081 | CHECK_AND_PRINT(IBSS), | |
5082 | CHECK_AND_PRINT(ACTIVE), | |
5083 | CHECK_AND_PRINT(RADAR), | |
5084 | CHECK_AND_PRINT(WIDE), | |
5085 | CHECK_AND_PRINT(NARROW), | |
5086 | CHECK_AND_PRINT(DFS), | |
5087 | eeprom_ch_info[ch].flags, | |
5088 | eeprom_ch_info[ch].max_power_avg, | |
5089 | ((eeprom_ch_info[ch]. | |
5090 | flags & EEPROM_CHANNEL_IBSS) | |
5091 | && !(eeprom_ch_info[ch]. | |
5092 | flags & EEPROM_CHANNEL_RADAR)) | |
5093 | ? "" : "not "); | |
5094 | ||
5095 | /* Set the user_txpower_limit to the highest power | |
5096 | * supported by any channel */ | |
5097 | if (eeprom_ch_info[ch].max_power_avg > | |
5098 | priv->user_txpower_limit) | |
5099 | priv->user_txpower_limit = | |
5100 | eeprom_ch_info[ch].max_power_avg; | |
5101 | ||
5102 | ch_info++; | |
5103 | } | |
5104 | } | |
5105 | ||
5106 | if (iwl3945_txpower_set_from_eeprom(priv)) | |
5107 | return -EIO; | |
5108 | ||
5109 | return 0; | |
5110 | } | |
5111 | ||
5112 | /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after | |
5113 | * sending probe req. This should be set long enough to hear probe responses | |
5114 | * from more than one AP. */ | |
5115 | #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */ | |
5116 | #define IWL_ACTIVE_DWELL_TIME_52 (10) | |
5117 | ||
5118 | /* For faster active scanning, scan will move to the next channel if fewer than | |
5119 | * PLCP_QUIET_THRESH packets are heard on this channel within | |
5120 | * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell | |
5121 | * time if it's a quiet channel (nothing responded to our probe, and there's | |
5122 | * no other traffic). | |
5123 | * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */ | |
5124 | #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */ | |
5125 | #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */ | |
5126 | ||
5127 | /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel. | |
5128 | * Must be set longer than active dwell time. | |
5129 | * For the most reliable scan, set > AP beacon interval (typically 100msec). */ | |
5130 | #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */ | |
5131 | #define IWL_PASSIVE_DWELL_TIME_52 (10) | |
5132 | #define IWL_PASSIVE_DWELL_BASE (100) | |
5133 | #define IWL_CHANNEL_TUNE_TIME 5 | |
5134 | ||
5135 | static inline u16 iwl_get_active_dwell_time(struct iwl_priv *priv, int phymode) | |
5136 | { | |
5137 | if (phymode == MODE_IEEE80211A) | |
5138 | return IWL_ACTIVE_DWELL_TIME_52; | |
5139 | else | |
5140 | return IWL_ACTIVE_DWELL_TIME_24; | |
5141 | } | |
5142 | ||
5143 | static u16 iwl_get_passive_dwell_time(struct iwl_priv *priv, int phymode) | |
5144 | { | |
5145 | u16 active = iwl_get_active_dwell_time(priv, phymode); | |
5146 | u16 passive = (phymode != MODE_IEEE80211A) ? | |
5147 | IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 : | |
5148 | IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52; | |
5149 | ||
5150 | if (iwl_is_associated(priv)) { | |
5151 | /* If we're associated, we clamp the maximum passive | |
5152 | * dwell time to be 98% of the beacon interval (minus | |
5153 | * 2 * channel tune time) */ | |
5154 | passive = priv->beacon_int; | |
5155 | if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive) | |
5156 | passive = IWL_PASSIVE_DWELL_BASE; | |
5157 | passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2; | |
5158 | } | |
5159 | ||
5160 | if (passive <= active) | |
5161 | passive = active + 1; | |
5162 | ||
5163 | return passive; | |
5164 | } | |
5165 | ||
5166 | static int iwl_get_channels_for_scan(struct iwl_priv *priv, int phymode, | |
5167 | u8 is_active, u8 direct_mask, | |
5168 | struct iwl_scan_channel *scan_ch) | |
5169 | { | |
5170 | const struct ieee80211_channel *channels = NULL; | |
5171 | const struct ieee80211_hw_mode *hw_mode; | |
5172 | const struct iwl_channel_info *ch_info; | |
5173 | u16 passive_dwell = 0; | |
5174 | u16 active_dwell = 0; | |
5175 | int added, i; | |
5176 | ||
5177 | hw_mode = iwl_get_hw_mode(priv, phymode); | |
5178 | if (!hw_mode) | |
5179 | return 0; | |
5180 | ||
5181 | channels = hw_mode->channels; | |
5182 | ||
5183 | active_dwell = iwl_get_active_dwell_time(priv, phymode); | |
5184 | passive_dwell = iwl_get_passive_dwell_time(priv, phymode); | |
5185 | ||
5186 | for (i = 0, added = 0; i < hw_mode->num_channels; i++) { | |
5187 | if (channels[i].chan == | |
5188 | le16_to_cpu(priv->active_rxon.channel)) { | |
5189 | if (iwl_is_associated(priv)) { | |
5190 | IWL_DEBUG_SCAN | |
5191 | ("Skipping current channel %d\n", | |
5192 | le16_to_cpu(priv->active_rxon.channel)); | |
5193 | continue; | |
5194 | } | |
5195 | } else if (priv->only_active_channel) | |
5196 | continue; | |
5197 | ||
5198 | scan_ch->channel = channels[i].chan; | |
5199 | ||
5200 | ch_info = iwl_get_channel_info(priv, phymode, scan_ch->channel); | |
5201 | if (!is_channel_valid(ch_info)) { | |
5202 | IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n", | |
5203 | scan_ch->channel); | |
5204 | continue; | |
5205 | } | |
5206 | ||
5207 | if (!is_active || is_channel_passive(ch_info) || | |
5208 | !(channels[i].flag & IEEE80211_CHAN_W_ACTIVE_SCAN)) | |
5209 | scan_ch->type = 0; /* passive */ | |
5210 | else | |
5211 | scan_ch->type = 1; /* active */ | |
5212 | ||
5213 | if (scan_ch->type & 1) | |
5214 | scan_ch->type |= (direct_mask << 1); | |
5215 | ||
5216 | if (is_channel_narrow(ch_info)) | |
5217 | scan_ch->type |= (1 << 7); | |
5218 | ||
5219 | scan_ch->active_dwell = cpu_to_le16(active_dwell); | |
5220 | scan_ch->passive_dwell = cpu_to_le16(passive_dwell); | |
5221 | ||
5222 | /* Set power levels to defaults */ | |
5223 | scan_ch->tpc.dsp_atten = 110; | |
5224 | /* scan_pwr_info->tpc.dsp_atten; */ | |
5225 | ||
5226 | /*scan_pwr_info->tpc.tx_gain; */ | |
5227 | if (phymode == MODE_IEEE80211A) | |
5228 | scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3; | |
5229 | else { | |
5230 | scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3)); | |
5231 | /* NOTE: if we were doing 6Mb OFDM for scans we'd use | |
5232 | * power level | |
5233 | scan_ch->tpc.tx_gain = ((1<<5) | (2 << 3)) | 3; | |
5234 | */ | |
5235 | } | |
5236 | ||
5237 | IWL_DEBUG_SCAN("Scanning %d [%s %d]\n", | |
5238 | scan_ch->channel, | |
5239 | (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE", | |
5240 | (scan_ch->type & 1) ? | |
5241 | active_dwell : passive_dwell); | |
5242 | ||
5243 | scan_ch++; | |
5244 | added++; | |
5245 | } | |
5246 | ||
5247 | IWL_DEBUG_SCAN("total channels to scan %d \n", added); | |
5248 | return added; | |
5249 | } | |
5250 | ||
5251 | static void iwl_reset_channel_flag(struct iwl_priv *priv) | |
5252 | { | |
5253 | int i, j; | |
5254 | for (i = 0; i < 3; i++) { | |
5255 | struct ieee80211_hw_mode *hw_mode = (void *)&priv->modes[i]; | |
5256 | for (j = 0; j < hw_mode->num_channels; j++) | |
5257 | hw_mode->channels[j].flag = hw_mode->channels[j].val; | |
5258 | } | |
5259 | } | |
5260 | ||
5261 | static void iwl_init_hw_rates(struct iwl_priv *priv, | |
5262 | struct ieee80211_rate *rates) | |
5263 | { | |
5264 | int i; | |
5265 | ||
5266 | for (i = 0; i < IWL_RATE_COUNT; i++) { | |
5267 | rates[i].rate = iwl_rates[i].ieee * 5; | |
5268 | rates[i].val = i; /* Rate scaling will work on indexes */ | |
5269 | rates[i].val2 = i; | |
5270 | rates[i].flags = IEEE80211_RATE_SUPPORTED; | |
5271 | /* Only OFDM have the bits-per-symbol set */ | |
5272 | if ((i <= IWL_LAST_OFDM_RATE) && (i >= IWL_FIRST_OFDM_RATE)) | |
5273 | rates[i].flags |= IEEE80211_RATE_OFDM; | |
5274 | else { | |
5275 | /* | |
5276 | * If CCK 1M then set rate flag to CCK else CCK_2 | |
5277 | * which is CCK | PREAMBLE2 | |
5278 | */ | |
5279 | rates[i].flags |= (iwl_rates[i].plcp == 10) ? | |
5280 | IEEE80211_RATE_CCK : IEEE80211_RATE_CCK_2; | |
5281 | } | |
5282 | ||
5283 | /* Set up which ones are basic rates... */ | |
5284 | if (IWL_BASIC_RATES_MASK & (1 << i)) | |
5285 | rates[i].flags |= IEEE80211_RATE_BASIC; | |
5286 | } | |
5287 | } | |
5288 | ||
5289 | /** | |
5290 | * iwl_init_geos - Initialize mac80211's geo/channel info based from eeprom | |
5291 | */ | |
5292 | static int iwl_init_geos(struct iwl_priv *priv) | |
5293 | { | |
5294 | struct iwl_channel_info *ch; | |
5295 | struct ieee80211_hw_mode *modes; | |
5296 | struct ieee80211_channel *channels; | |
5297 | struct ieee80211_channel *geo_ch; | |
5298 | struct ieee80211_rate *rates; | |
5299 | int i = 0; | |
5300 | enum { | |
5301 | A = 0, | |
5302 | B = 1, | |
5303 | G = 2, | |
5304 | }; | |
5305 | int mode_count = 3; | |
5306 | ||
5307 | if (priv->modes) { | |
5308 | IWL_DEBUG_INFO("Geography modes already initialized.\n"); | |
5309 | set_bit(STATUS_GEO_CONFIGURED, &priv->status); | |
5310 | return 0; | |
5311 | } | |
5312 | ||
5313 | modes = kzalloc(sizeof(struct ieee80211_hw_mode) * mode_count, | |
5314 | GFP_KERNEL); | |
5315 | if (!modes) | |
5316 | return -ENOMEM; | |
5317 | ||
5318 | channels = kzalloc(sizeof(struct ieee80211_channel) * | |
5319 | priv->channel_count, GFP_KERNEL); | |
5320 | if (!channels) { | |
5321 | kfree(modes); | |
5322 | return -ENOMEM; | |
5323 | } | |
5324 | ||
5325 | rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_MAX_RATES + 1)), | |
5326 | GFP_KERNEL); | |
5327 | if (!rates) { | |
5328 | kfree(modes); | |
5329 | kfree(channels); | |
5330 | return -ENOMEM; | |
5331 | } | |
5332 | ||
5333 | /* 0 = 802.11a | |
5334 | * 1 = 802.11b | |
5335 | * 2 = 802.11g | |
5336 | */ | |
5337 | ||
5338 | /* 5.2GHz channels start after the 2.4GHz channels */ | |
5339 | modes[A].mode = MODE_IEEE80211A; | |
5340 | modes[A].channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)]; | |
14577f23 | 5341 | modes[A].rates = &rates[4]; |
b481de9c ZY |
5342 | modes[A].num_rates = 8; /* just OFDM */ |
5343 | modes[A].num_channels = 0; | |
5344 | ||
5345 | modes[B].mode = MODE_IEEE80211B; | |
5346 | modes[B].channels = channels; | |
14577f23 | 5347 | modes[B].rates = rates; |
b481de9c ZY |
5348 | modes[B].num_rates = 4; /* just CCK */ |
5349 | modes[B].num_channels = 0; | |
5350 | ||
5351 | modes[G].mode = MODE_IEEE80211G; | |
5352 | modes[G].channels = channels; | |
5353 | modes[G].rates = rates; | |
5354 | modes[G].num_rates = 12; /* OFDM & CCK */ | |
5355 | modes[G].num_channels = 0; | |
5356 | ||
5357 | priv->ieee_channels = channels; | |
5358 | priv->ieee_rates = rates; | |
5359 | ||
5360 | iwl_init_hw_rates(priv, rates); | |
5361 | ||
5362 | for (i = 0, geo_ch = channels; i < priv->channel_count; i++) { | |
5363 | ch = &priv->channel_info[i]; | |
5364 | ||
5365 | if (!is_channel_valid(ch)) { | |
5366 | IWL_DEBUG_INFO("Channel %d [%sGHz] is restricted -- " | |
5367 | "skipping.\n", | |
5368 | ch->channel, is_channel_a_band(ch) ? | |
5369 | "5.2" : "2.4"); | |
5370 | continue; | |
5371 | } | |
5372 | ||
5373 | if (is_channel_a_band(ch)) | |
5374 | geo_ch = &modes[A].channels[modes[A].num_channels++]; | |
5375 | else { | |
5376 | geo_ch = &modes[B].channels[modes[B].num_channels++]; | |
5377 | modes[G].num_channels++; | |
5378 | } | |
5379 | ||
5380 | geo_ch->freq = ieee80211chan2mhz(ch->channel); | |
5381 | geo_ch->chan = ch->channel; | |
5382 | geo_ch->power_level = ch->max_power_avg; | |
5383 | geo_ch->antenna_max = 0xff; | |
5384 | ||
5385 | if (is_channel_valid(ch)) { | |
5386 | geo_ch->flag = IEEE80211_CHAN_W_SCAN; | |
5387 | if (ch->flags & EEPROM_CHANNEL_IBSS) | |
5388 | geo_ch->flag |= IEEE80211_CHAN_W_IBSS; | |
5389 | ||
5390 | if (ch->flags & EEPROM_CHANNEL_ACTIVE) | |
5391 | geo_ch->flag |= IEEE80211_CHAN_W_ACTIVE_SCAN; | |
5392 | ||
5393 | if (ch->flags & EEPROM_CHANNEL_RADAR) | |
5394 | geo_ch->flag |= IEEE80211_CHAN_W_RADAR_DETECT; | |
5395 | ||
5396 | if (ch->max_power_avg > priv->max_channel_txpower_limit) | |
5397 | priv->max_channel_txpower_limit = | |
5398 | ch->max_power_avg; | |
5399 | } | |
5400 | ||
5401 | geo_ch->val = geo_ch->flag; | |
5402 | } | |
5403 | ||
5404 | if ((modes[A].num_channels == 0) && priv->is_abg) { | |
5405 | printk(KERN_INFO DRV_NAME | |
5406 | ": Incorrectly detected BG card as ABG. Please send " | |
5407 | "your PCI ID 0x%04X:0x%04X to maintainer.\n", | |
5408 | priv->pci_dev->device, priv->pci_dev->subsystem_device); | |
5409 | priv->is_abg = 0; | |
5410 | } | |
5411 | ||
5412 | printk(KERN_INFO DRV_NAME | |
5413 | ": Tunable channels: %d 802.11bg, %d 802.11a channels\n", | |
5414 | modes[G].num_channels, modes[A].num_channels); | |
5415 | ||
5416 | /* | |
5417 | * NOTE: We register these in preference of order -- the | |
5418 | * stack doesn't currently (as of 7.0.6 / Apr 24 '07) pick | |
5419 | * a phymode based on rates or AP capabilities but seems to | |
5420 | * configure it purely on if the channel being configured | |
5421 | * is supported by a mode -- and the first match is taken | |
5422 | */ | |
5423 | ||
5424 | if (modes[G].num_channels) | |
5425 | ieee80211_register_hwmode(priv->hw, &modes[G]); | |
5426 | if (modes[B].num_channels) | |
5427 | ieee80211_register_hwmode(priv->hw, &modes[B]); | |
5428 | if (modes[A].num_channels) | |
5429 | ieee80211_register_hwmode(priv->hw, &modes[A]); | |
5430 | ||
5431 | priv->modes = modes; | |
5432 | set_bit(STATUS_GEO_CONFIGURED, &priv->status); | |
5433 | ||
5434 | return 0; | |
5435 | } | |
5436 | ||
5437 | /****************************************************************************** | |
5438 | * | |
5439 | * uCode download functions | |
5440 | * | |
5441 | ******************************************************************************/ | |
5442 | ||
5443 | static void iwl_dealloc_ucode_pci(struct iwl_priv *priv) | |
5444 | { | |
5445 | if (priv->ucode_code.v_addr != NULL) { | |
5446 | pci_free_consistent(priv->pci_dev, | |
5447 | priv->ucode_code.len, | |
5448 | priv->ucode_code.v_addr, | |
5449 | priv->ucode_code.p_addr); | |
5450 | priv->ucode_code.v_addr = NULL; | |
5451 | } | |
5452 | if (priv->ucode_data.v_addr != NULL) { | |
5453 | pci_free_consistent(priv->pci_dev, | |
5454 | priv->ucode_data.len, | |
5455 | priv->ucode_data.v_addr, | |
5456 | priv->ucode_data.p_addr); | |
5457 | priv->ucode_data.v_addr = NULL; | |
5458 | } | |
5459 | if (priv->ucode_data_backup.v_addr != NULL) { | |
5460 | pci_free_consistent(priv->pci_dev, | |
5461 | priv->ucode_data_backup.len, | |
5462 | priv->ucode_data_backup.v_addr, | |
5463 | priv->ucode_data_backup.p_addr); | |
5464 | priv->ucode_data_backup.v_addr = NULL; | |
5465 | } | |
5466 | if (priv->ucode_init.v_addr != NULL) { | |
5467 | pci_free_consistent(priv->pci_dev, | |
5468 | priv->ucode_init.len, | |
5469 | priv->ucode_init.v_addr, | |
5470 | priv->ucode_init.p_addr); | |
5471 | priv->ucode_init.v_addr = NULL; | |
5472 | } | |
5473 | if (priv->ucode_init_data.v_addr != NULL) { | |
5474 | pci_free_consistent(priv->pci_dev, | |
5475 | priv->ucode_init_data.len, | |
5476 | priv->ucode_init_data.v_addr, | |
5477 | priv->ucode_init_data.p_addr); | |
5478 | priv->ucode_init_data.v_addr = NULL; | |
5479 | } | |
5480 | if (priv->ucode_boot.v_addr != NULL) { | |
5481 | pci_free_consistent(priv->pci_dev, | |
5482 | priv->ucode_boot.len, | |
5483 | priv->ucode_boot.v_addr, | |
5484 | priv->ucode_boot.p_addr); | |
5485 | priv->ucode_boot.v_addr = NULL; | |
5486 | } | |
5487 | } | |
5488 | ||
5489 | /** | |
5490 | * iwl_verify_inst_full - verify runtime uCode image in card vs. host, | |
5491 | * looking at all data. | |
5492 | */ | |
5493 | static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 * image, u32 len) | |
5494 | { | |
5495 | u32 val; | |
5496 | u32 save_len = len; | |
5497 | int rc = 0; | |
5498 | u32 errcnt; | |
5499 | ||
5500 | IWL_DEBUG_INFO("ucode inst image size is %u\n", len); | |
5501 | ||
5502 | rc = iwl_grab_restricted_access(priv); | |
5503 | if (rc) | |
5504 | return rc; | |
5505 | ||
5506 | iwl_write_restricted(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND); | |
5507 | ||
5508 | errcnt = 0; | |
5509 | for (; len > 0; len -= sizeof(u32), image++) { | |
5510 | /* read data comes through single port, auto-incr addr */ | |
5511 | /* NOTE: Use the debugless read so we don't flood kernel log | |
5512 | * if IWL_DL_IO is set */ | |
5513 | val = _iwl_read_restricted(priv, HBUS_TARG_MEM_RDAT); | |
5514 | if (val != le32_to_cpu(*image)) { | |
5515 | IWL_ERROR("uCode INST section is invalid at " | |
5516 | "offset 0x%x, is 0x%x, s/b 0x%x\n", | |
5517 | save_len - len, val, le32_to_cpu(*image)); | |
5518 | rc = -EIO; | |
5519 | errcnt++; | |
5520 | if (errcnt >= 20) | |
5521 | break; | |
5522 | } | |
5523 | } | |
5524 | ||
5525 | iwl_release_restricted_access(priv); | |
5526 | ||
5527 | if (!errcnt) | |
5528 | IWL_DEBUG_INFO | |
5529 | ("ucode image in INSTRUCTION memory is good\n"); | |
5530 | ||
5531 | return rc; | |
5532 | } | |
5533 | ||
5534 | ||
5535 | /** | |
5536 | * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host, | |
5537 | * using sample data 100 bytes apart. If these sample points are good, | |
5538 | * it's a pretty good bet that everything between them is good, too. | |
5539 | */ | |
5540 | static int iwl_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len) | |
5541 | { | |
5542 | u32 val; | |
5543 | int rc = 0; | |
5544 | u32 errcnt = 0; | |
5545 | u32 i; | |
5546 | ||
5547 | IWL_DEBUG_INFO("ucode inst image size is %u\n", len); | |
5548 | ||
5549 | rc = iwl_grab_restricted_access(priv); | |
5550 | if (rc) | |
5551 | return rc; | |
5552 | ||
5553 | for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) { | |
5554 | /* read data comes through single port, auto-incr addr */ | |
5555 | /* NOTE: Use the debugless read so we don't flood kernel log | |
5556 | * if IWL_DL_IO is set */ | |
5557 | iwl_write_restricted(priv, HBUS_TARG_MEM_RADDR, | |
5558 | i + RTC_INST_LOWER_BOUND); | |
5559 | val = _iwl_read_restricted(priv, HBUS_TARG_MEM_RDAT); | |
5560 | if (val != le32_to_cpu(*image)) { | |
5561 | #if 0 /* Enable this if you want to see details */ | |
5562 | IWL_ERROR("uCode INST section is invalid at " | |
5563 | "offset 0x%x, is 0x%x, s/b 0x%x\n", | |
5564 | i, val, *image); | |
5565 | #endif | |
5566 | rc = -EIO; | |
5567 | errcnt++; | |
5568 | if (errcnt >= 3) | |
5569 | break; | |
5570 | } | |
5571 | } | |
5572 | ||
5573 | iwl_release_restricted_access(priv); | |
5574 | ||
5575 | return rc; | |
5576 | } | |
5577 | ||
5578 | ||
5579 | /** | |
5580 | * iwl_verify_ucode - determine which instruction image is in SRAM, | |
5581 | * and verify its contents | |
5582 | */ | |
5583 | static int iwl_verify_ucode(struct iwl_priv *priv) | |
5584 | { | |
5585 | __le32 *image; | |
5586 | u32 len; | |
5587 | int rc = 0; | |
5588 | ||
5589 | /* Try bootstrap */ | |
5590 | image = (__le32 *)priv->ucode_boot.v_addr; | |
5591 | len = priv->ucode_boot.len; | |
5592 | rc = iwl_verify_inst_sparse(priv, image, len); | |
5593 | if (rc == 0) { | |
5594 | IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n"); | |
5595 | return 0; | |
5596 | } | |
5597 | ||
5598 | /* Try initialize */ | |
5599 | image = (__le32 *)priv->ucode_init.v_addr; | |
5600 | len = priv->ucode_init.len; | |
5601 | rc = iwl_verify_inst_sparse(priv, image, len); | |
5602 | if (rc == 0) { | |
5603 | IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n"); | |
5604 | return 0; | |
5605 | } | |
5606 | ||
5607 | /* Try runtime/protocol */ | |
5608 | image = (__le32 *)priv->ucode_code.v_addr; | |
5609 | len = priv->ucode_code.len; | |
5610 | rc = iwl_verify_inst_sparse(priv, image, len); | |
5611 | if (rc == 0) { | |
5612 | IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n"); | |
5613 | return 0; | |
5614 | } | |
5615 | ||
5616 | IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n"); | |
5617 | ||
5618 | /* Show first several data entries in instruction SRAM. | |
5619 | * Selection of bootstrap image is arbitrary. */ | |
5620 | image = (__le32 *)priv->ucode_boot.v_addr; | |
5621 | len = priv->ucode_boot.len; | |
5622 | rc = iwl_verify_inst_full(priv, image, len); | |
5623 | ||
5624 | return rc; | |
5625 | } | |
5626 | ||
5627 | ||
5628 | /* check contents of special bootstrap uCode SRAM */ | |
5629 | static int iwl_verify_bsm(struct iwl_priv *priv) | |
5630 | { | |
5631 | __le32 *image = priv->ucode_boot.v_addr; | |
5632 | u32 len = priv->ucode_boot.len; | |
5633 | u32 reg; | |
5634 | u32 val; | |
5635 | ||
5636 | IWL_DEBUG_INFO("Begin verify bsm\n"); | |
5637 | ||
5638 | /* verify BSM SRAM contents */ | |
5639 | val = iwl_read_restricted_reg(priv, BSM_WR_DWCOUNT_REG); | |
5640 | for (reg = BSM_SRAM_LOWER_BOUND; | |
5641 | reg < BSM_SRAM_LOWER_BOUND + len; | |
5642 | reg += sizeof(u32), image ++) { | |
5643 | val = iwl_read_restricted_reg(priv, reg); | |
5644 | if (val != le32_to_cpu(*image)) { | |
5645 | IWL_ERROR("BSM uCode verification failed at " | |
5646 | "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n", | |
5647 | BSM_SRAM_LOWER_BOUND, | |
5648 | reg - BSM_SRAM_LOWER_BOUND, len, | |
5649 | val, le32_to_cpu(*image)); | |
5650 | return -EIO; | |
5651 | } | |
5652 | } | |
5653 | ||
5654 | IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n"); | |
5655 | ||
5656 | return 0; | |
5657 | } | |
5658 | ||
5659 | /** | |
5660 | * iwl_load_bsm - Load bootstrap instructions | |
5661 | * | |
5662 | * BSM operation: | |
5663 | * | |
5664 | * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program | |
5665 | * in special SRAM that does not power down during RFKILL. When powering back | |
5666 | * up after power-saving sleeps (or during initial uCode load), the BSM loads | |
5667 | * the bootstrap program into the on-board processor, and starts it. | |
5668 | * | |
5669 | * The bootstrap program loads (via DMA) instructions and data for a new | |
5670 | * program from host DRAM locations indicated by the host driver in the | |
5671 | * BSM_DRAM_* registers. Once the new program is loaded, it starts | |
5672 | * automatically. | |
5673 | * | |
5674 | * When initializing the NIC, the host driver points the BSM to the | |
5675 | * "initialize" uCode image. This uCode sets up some internal data, then | |
5676 | * notifies host via "initialize alive" that it is complete. | |
5677 | * | |
5678 | * The host then replaces the BSM_DRAM_* pointer values to point to the | |
5679 | * normal runtime uCode instructions and a backup uCode data cache buffer | |
5680 | * (filled initially with starting data values for the on-board processor), | |
5681 | * then triggers the "initialize" uCode to load and launch the runtime uCode, | |
5682 | * which begins normal operation. | |
5683 | * | |
5684 | * When doing a power-save shutdown, runtime uCode saves data SRAM into | |
5685 | * the backup data cache in DRAM before SRAM is powered down. | |
5686 | * | |
5687 | * When powering back up, the BSM loads the bootstrap program. This reloads | |
5688 | * the runtime uCode instructions and the backup data cache into SRAM, | |
5689 | * and re-launches the runtime uCode from where it left off. | |
5690 | */ | |
5691 | static int iwl_load_bsm(struct iwl_priv *priv) | |
5692 | { | |
5693 | __le32 *image = priv->ucode_boot.v_addr; | |
5694 | u32 len = priv->ucode_boot.len; | |
5695 | dma_addr_t pinst; | |
5696 | dma_addr_t pdata; | |
5697 | u32 inst_len; | |
5698 | u32 data_len; | |
5699 | int rc; | |
5700 | int i; | |
5701 | u32 done; | |
5702 | u32 reg_offset; | |
5703 | ||
5704 | IWL_DEBUG_INFO("Begin load bsm\n"); | |
5705 | ||
5706 | /* make sure bootstrap program is no larger than BSM's SRAM size */ | |
5707 | if (len > IWL_MAX_BSM_SIZE) | |
5708 | return -EINVAL; | |
5709 | ||
5710 | /* Tell bootstrap uCode where to find the "Initialize" uCode | |
5711 | * in host DRAM ... bits 31:0 for 3945, bits 35:4 for 4965. | |
5712 | * NOTE: iwl_initialize_alive_start() will replace these values, | |
5713 | * after the "initialize" uCode has run, to point to | |
5714 | * runtime/protocol instructions and backup data cache. */ | |
5715 | pinst = priv->ucode_init.p_addr; | |
5716 | pdata = priv->ucode_init_data.p_addr; | |
5717 | inst_len = priv->ucode_init.len; | |
5718 | data_len = priv->ucode_init_data.len; | |
5719 | ||
5720 | rc = iwl_grab_restricted_access(priv); | |
5721 | if (rc) | |
5722 | return rc; | |
5723 | ||
5724 | iwl_write_restricted_reg(priv, BSM_DRAM_INST_PTR_REG, pinst); | |
5725 | iwl_write_restricted_reg(priv, BSM_DRAM_DATA_PTR_REG, pdata); | |
5726 | iwl_write_restricted_reg(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len); | |
5727 | iwl_write_restricted_reg(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len); | |
5728 | ||
5729 | /* Fill BSM memory with bootstrap instructions */ | |
5730 | for (reg_offset = BSM_SRAM_LOWER_BOUND; | |
5731 | reg_offset < BSM_SRAM_LOWER_BOUND + len; | |
5732 | reg_offset += sizeof(u32), image++) | |
5733 | _iwl_write_restricted_reg(priv, reg_offset, | |
5734 | le32_to_cpu(*image)); | |
5735 | ||
5736 | rc = iwl_verify_bsm(priv); | |
5737 | if (rc) { | |
5738 | iwl_release_restricted_access(priv); | |
5739 | return rc; | |
5740 | } | |
5741 | ||
5742 | /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */ | |
5743 | iwl_write_restricted_reg(priv, BSM_WR_MEM_SRC_REG, 0x0); | |
5744 | iwl_write_restricted_reg(priv, BSM_WR_MEM_DST_REG, | |
5745 | RTC_INST_LOWER_BOUND); | |
5746 | iwl_write_restricted_reg(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32)); | |
5747 | ||
5748 | /* Load bootstrap code into instruction SRAM now, | |
5749 | * to prepare to load "initialize" uCode */ | |
5750 | iwl_write_restricted_reg(priv, BSM_WR_CTRL_REG, | |
5751 | BSM_WR_CTRL_REG_BIT_START); | |
5752 | ||
5753 | /* Wait for load of bootstrap uCode to finish */ | |
5754 | for (i = 0; i < 100; i++) { | |
5755 | done = iwl_read_restricted_reg(priv, BSM_WR_CTRL_REG); | |
5756 | if (!(done & BSM_WR_CTRL_REG_BIT_START)) | |
5757 | break; | |
5758 | udelay(10); | |
5759 | } | |
5760 | if (i < 100) | |
5761 | IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i); | |
5762 | else { | |
5763 | IWL_ERROR("BSM write did not complete!\n"); | |
5764 | return -EIO; | |
5765 | } | |
5766 | ||
5767 | /* Enable future boot loads whenever power management unit triggers it | |
5768 | * (e.g. when powering back up after power-save shutdown) */ | |
5769 | iwl_write_restricted_reg(priv, BSM_WR_CTRL_REG, | |
5770 | BSM_WR_CTRL_REG_BIT_START_EN); | |
5771 | ||
5772 | iwl_release_restricted_access(priv); | |
5773 | ||
5774 | return 0; | |
5775 | } | |
5776 | ||
5777 | static void iwl_nic_start(struct iwl_priv *priv) | |
5778 | { | |
5779 | /* Remove all resets to allow NIC to operate */ | |
5780 | iwl_write32(priv, CSR_RESET, 0); | |
5781 | } | |
5782 | ||
5783 | /** | |
5784 | * iwl_read_ucode - Read uCode images from disk file. | |
5785 | * | |
5786 | * Copy into buffers for card to fetch via bus-mastering | |
5787 | */ | |
5788 | static int iwl_read_ucode(struct iwl_priv *priv) | |
5789 | { | |
5790 | struct iwl_ucode *ucode; | |
5791 | int rc = 0; | |
5792 | const struct firmware *ucode_raw; | |
5793 | /* firmware file name contains uCode/driver compatibility version */ | |
5794 | const char *name = "iwlwifi-3945" IWL3945_UCODE_API ".ucode"; | |
5795 | u8 *src; | |
5796 | size_t len; | |
5797 | u32 ver, inst_size, data_size, init_size, init_data_size, boot_size; | |
5798 | ||
5799 | /* Ask kernel firmware_class module to get the boot firmware off disk. | |
5800 | * request_firmware() is synchronous, file is in memory on return. */ | |
5801 | rc = request_firmware(&ucode_raw, name, &priv->pci_dev->dev); | |
5802 | if (rc < 0) { | |
5803 | IWL_ERROR("%s firmware file req failed: Reason %d\n", name, rc); | |
5804 | goto error; | |
5805 | } | |
5806 | ||
5807 | IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n", | |
5808 | name, ucode_raw->size); | |
5809 | ||
5810 | /* Make sure that we got at least our header! */ | |
5811 | if (ucode_raw->size < sizeof(*ucode)) { | |
5812 | IWL_ERROR("File size way too small!\n"); | |
5813 | rc = -EINVAL; | |
5814 | goto err_release; | |
5815 | } | |
5816 | ||
5817 | /* Data from ucode file: header followed by uCode images */ | |
5818 | ucode = (void *)ucode_raw->data; | |
5819 | ||
5820 | ver = le32_to_cpu(ucode->ver); | |
5821 | inst_size = le32_to_cpu(ucode->inst_size); | |
5822 | data_size = le32_to_cpu(ucode->data_size); | |
5823 | init_size = le32_to_cpu(ucode->init_size); | |
5824 | init_data_size = le32_to_cpu(ucode->init_data_size); | |
5825 | boot_size = le32_to_cpu(ucode->boot_size); | |
5826 | ||
5827 | IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver); | |
5828 | IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n", | |
5829 | inst_size); | |
5830 | IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n", | |
5831 | data_size); | |
5832 | IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n", | |
5833 | init_size); | |
5834 | IWL_DEBUG_INFO("f/w package hdr init data size = %u\n", | |
5835 | init_data_size); | |
5836 | IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n", | |
5837 | boot_size); | |
5838 | ||
5839 | /* Verify size of file vs. image size info in file's header */ | |
5840 | if (ucode_raw->size < sizeof(*ucode) + | |
5841 | inst_size + data_size + init_size + | |
5842 | init_data_size + boot_size) { | |
5843 | ||
5844 | IWL_DEBUG_INFO("uCode file size %d too small\n", | |
5845 | (int)ucode_raw->size); | |
5846 | rc = -EINVAL; | |
5847 | goto err_release; | |
5848 | } | |
5849 | ||
5850 | /* Verify that uCode images will fit in card's SRAM */ | |
5851 | if (inst_size > IWL_MAX_INST_SIZE) { | |
5852 | IWL_DEBUG_INFO("uCode instr len %d too large to fit in card\n", | |
5853 | (int)inst_size); | |
5854 | rc = -EINVAL; | |
5855 | goto err_release; | |
5856 | } | |
5857 | ||
5858 | if (data_size > IWL_MAX_DATA_SIZE) { | |
5859 | IWL_DEBUG_INFO("uCode data len %d too large to fit in card\n", | |
5860 | (int)data_size); | |
5861 | rc = -EINVAL; | |
5862 | goto err_release; | |
5863 | } | |
5864 | if (init_size > IWL_MAX_INST_SIZE) { | |
5865 | IWL_DEBUG_INFO | |
5866 | ("uCode init instr len %d too large to fit in card\n", | |
5867 | (int)init_size); | |
5868 | rc = -EINVAL; | |
5869 | goto err_release; | |
5870 | } | |
5871 | if (init_data_size > IWL_MAX_DATA_SIZE) { | |
5872 | IWL_DEBUG_INFO | |
5873 | ("uCode init data len %d too large to fit in card\n", | |
5874 | (int)init_data_size); | |
5875 | rc = -EINVAL; | |
5876 | goto err_release; | |
5877 | } | |
5878 | if (boot_size > IWL_MAX_BSM_SIZE) { | |
5879 | IWL_DEBUG_INFO | |
5880 | ("uCode boot instr len %d too large to fit in bsm\n", | |
5881 | (int)boot_size); | |
5882 | rc = -EINVAL; | |
5883 | goto err_release; | |
5884 | } | |
5885 | ||
5886 | /* Allocate ucode buffers for card's bus-master loading ... */ | |
5887 | ||
5888 | /* Runtime instructions and 2 copies of data: | |
5889 | * 1) unmodified from disk | |
5890 | * 2) backup cache for save/restore during power-downs */ | |
5891 | priv->ucode_code.len = inst_size; | |
5892 | priv->ucode_code.v_addr = | |
5893 | pci_alloc_consistent(priv->pci_dev, | |
5894 | priv->ucode_code.len, | |
5895 | &(priv->ucode_code.p_addr)); | |
5896 | ||
5897 | priv->ucode_data.len = data_size; | |
5898 | priv->ucode_data.v_addr = | |
5899 | pci_alloc_consistent(priv->pci_dev, | |
5900 | priv->ucode_data.len, | |
5901 | &(priv->ucode_data.p_addr)); | |
5902 | ||
5903 | priv->ucode_data_backup.len = data_size; | |
5904 | priv->ucode_data_backup.v_addr = | |
5905 | pci_alloc_consistent(priv->pci_dev, | |
5906 | priv->ucode_data_backup.len, | |
5907 | &(priv->ucode_data_backup.p_addr)); | |
5908 | ||
5909 | ||
5910 | /* Initialization instructions and data */ | |
5911 | priv->ucode_init.len = init_size; | |
5912 | priv->ucode_init.v_addr = | |
5913 | pci_alloc_consistent(priv->pci_dev, | |
5914 | priv->ucode_init.len, | |
5915 | &(priv->ucode_init.p_addr)); | |
5916 | ||
5917 | priv->ucode_init_data.len = init_data_size; | |
5918 | priv->ucode_init_data.v_addr = | |
5919 | pci_alloc_consistent(priv->pci_dev, | |
5920 | priv->ucode_init_data.len, | |
5921 | &(priv->ucode_init_data.p_addr)); | |
5922 | ||
5923 | /* Bootstrap (instructions only, no data) */ | |
5924 | priv->ucode_boot.len = boot_size; | |
5925 | priv->ucode_boot.v_addr = | |
5926 | pci_alloc_consistent(priv->pci_dev, | |
5927 | priv->ucode_boot.len, | |
5928 | &(priv->ucode_boot.p_addr)); | |
5929 | ||
5930 | if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr || | |
5931 | !priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr || | |
5932 | !priv->ucode_boot.v_addr || !priv->ucode_data_backup.v_addr) | |
5933 | goto err_pci_alloc; | |
5934 | ||
5935 | /* Copy images into buffers for card's bus-master reads ... */ | |
5936 | ||
5937 | /* Runtime instructions (first block of data in file) */ | |
5938 | src = &ucode->data[0]; | |
5939 | len = priv->ucode_code.len; | |
5940 | IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %d\n", | |
5941 | (int)len); | |
5942 | memcpy(priv->ucode_code.v_addr, src, len); | |
5943 | IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n", | |
5944 | priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr); | |
5945 | ||
5946 | /* Runtime data (2nd block) | |
5947 | * NOTE: Copy into backup buffer will be done in iwl_up() */ | |
5948 | src = &ucode->data[inst_size]; | |
5949 | len = priv->ucode_data.len; | |
5950 | IWL_DEBUG_INFO("Copying (but not loading) uCode data len %d\n", | |
5951 | (int)len); | |
5952 | memcpy(priv->ucode_data.v_addr, src, len); | |
5953 | memcpy(priv->ucode_data_backup.v_addr, src, len); | |
5954 | ||
5955 | /* Initialization instructions (3rd block) */ | |
5956 | if (init_size) { | |
5957 | src = &ucode->data[inst_size + data_size]; | |
5958 | len = priv->ucode_init.len; | |
5959 | IWL_DEBUG_INFO("Copying (but not loading) init instr len %d\n", | |
5960 | (int)len); | |
5961 | memcpy(priv->ucode_init.v_addr, src, len); | |
5962 | } | |
5963 | ||
5964 | /* Initialization data (4th block) */ | |
5965 | if (init_data_size) { | |
5966 | src = &ucode->data[inst_size + data_size + init_size]; | |
5967 | len = priv->ucode_init_data.len; | |
5968 | IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n", | |
5969 | (int)len); | |
5970 | memcpy(priv->ucode_init_data.v_addr, src, len); | |
5971 | } | |
5972 | ||
5973 | /* Bootstrap instructions (5th block) */ | |
5974 | src = &ucode->data[inst_size + data_size + init_size + init_data_size]; | |
5975 | len = priv->ucode_boot.len; | |
5976 | IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n", | |
5977 | (int)len); | |
5978 | memcpy(priv->ucode_boot.v_addr, src, len); | |
5979 | ||
5980 | /* We have our copies now, allow OS release its copies */ | |
5981 | release_firmware(ucode_raw); | |
5982 | return 0; | |
5983 | ||
5984 | err_pci_alloc: | |
5985 | IWL_ERROR("failed to allocate pci memory\n"); | |
5986 | rc = -ENOMEM; | |
5987 | iwl_dealloc_ucode_pci(priv); | |
5988 | ||
5989 | err_release: | |
5990 | release_firmware(ucode_raw); | |
5991 | ||
5992 | error: | |
5993 | return rc; | |
5994 | } | |
5995 | ||
5996 | ||
5997 | /** | |
5998 | * iwl_set_ucode_ptrs - Set uCode address location | |
5999 | * | |
6000 | * Tell initialization uCode where to find runtime uCode. | |
6001 | * | |
6002 | * BSM registers initially contain pointers to initialization uCode. | |
6003 | * We need to replace them to load runtime uCode inst and data, | |
6004 | * and to save runtime data when powering down. | |
6005 | */ | |
6006 | static int iwl_set_ucode_ptrs(struct iwl_priv *priv) | |
6007 | { | |
6008 | dma_addr_t pinst; | |
6009 | dma_addr_t pdata; | |
6010 | int rc = 0; | |
6011 | unsigned long flags; | |
6012 | ||
6013 | /* bits 31:0 for 3945 */ | |
6014 | pinst = priv->ucode_code.p_addr; | |
6015 | pdata = priv->ucode_data_backup.p_addr; | |
6016 | ||
6017 | spin_lock_irqsave(&priv->lock, flags); | |
6018 | rc = iwl_grab_restricted_access(priv); | |
6019 | if (rc) { | |
6020 | spin_unlock_irqrestore(&priv->lock, flags); | |
6021 | return rc; | |
6022 | } | |
6023 | ||
6024 | /* Tell bootstrap uCode where to find image to load */ | |
6025 | iwl_write_restricted_reg(priv, BSM_DRAM_INST_PTR_REG, pinst); | |
6026 | iwl_write_restricted_reg(priv, BSM_DRAM_DATA_PTR_REG, pdata); | |
6027 | iwl_write_restricted_reg(priv, BSM_DRAM_DATA_BYTECOUNT_REG, | |
6028 | priv->ucode_data.len); | |
6029 | ||
6030 | /* Inst bytecount must be last to set up, bit 31 signals uCode | |
6031 | * that all new ptr/size info is in place */ | |
6032 | iwl_write_restricted_reg(priv, BSM_DRAM_INST_BYTECOUNT_REG, | |
6033 | priv->ucode_code.len | BSM_DRAM_INST_LOAD); | |
6034 | ||
6035 | iwl_release_restricted_access(priv); | |
6036 | ||
6037 | spin_unlock_irqrestore(&priv->lock, flags); | |
6038 | ||
6039 | IWL_DEBUG_INFO("Runtime uCode pointers are set.\n"); | |
6040 | ||
6041 | return rc; | |
6042 | } | |
6043 | ||
6044 | /** | |
01ebd063 | 6045 | * iwl_init_alive_start - Called after REPLY_ALIVE notification received |
b481de9c ZY |
6046 | * |
6047 | * Called after REPLY_ALIVE notification received from "initialize" uCode. | |
6048 | * | |
6049 | * The 4965 "initialize" ALIVE reply contains calibration data for: | |
6050 | * Voltage, temperature, and MIMO tx gain correction, now stored in priv | |
6051 | * (3945 does not contain this data). | |
6052 | * | |
6053 | * Tell "initialize" uCode to go ahead and load the runtime uCode. | |
6054 | */ | |
6055 | static void iwl_init_alive_start(struct iwl_priv *priv) | |
6056 | { | |
6057 | /* Check alive response for "valid" sign from uCode */ | |
6058 | if (priv->card_alive_init.is_valid != UCODE_VALID_OK) { | |
6059 | /* We had an error bringing up the hardware, so take it | |
6060 | * all the way back down so we can try again */ | |
6061 | IWL_DEBUG_INFO("Initialize Alive failed.\n"); | |
6062 | goto restart; | |
6063 | } | |
6064 | ||
6065 | /* Bootstrap uCode has loaded initialize uCode ... verify inst image. | |
6066 | * This is a paranoid check, because we would not have gotten the | |
6067 | * "initialize" alive if code weren't properly loaded. */ | |
6068 | if (iwl_verify_ucode(priv)) { | |
6069 | /* Runtime instruction load was bad; | |
6070 | * take it all the way back down so we can try again */ | |
6071 | IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n"); | |
6072 | goto restart; | |
6073 | } | |
6074 | ||
6075 | /* Send pointers to protocol/runtime uCode image ... init code will | |
6076 | * load and launch runtime uCode, which will send us another "Alive" | |
6077 | * notification. */ | |
6078 | IWL_DEBUG_INFO("Initialization Alive received.\n"); | |
6079 | if (iwl_set_ucode_ptrs(priv)) { | |
6080 | /* Runtime instruction load won't happen; | |
6081 | * take it all the way back down so we can try again */ | |
6082 | IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n"); | |
6083 | goto restart; | |
6084 | } | |
6085 | return; | |
6086 | ||
6087 | restart: | |
6088 | queue_work(priv->workqueue, &priv->restart); | |
6089 | } | |
6090 | ||
6091 | ||
6092 | /** | |
6093 | * iwl_alive_start - called after REPLY_ALIVE notification received | |
6094 | * from protocol/runtime uCode (initialization uCode's | |
6095 | * Alive gets handled by iwl_init_alive_start()). | |
6096 | */ | |
6097 | static void iwl_alive_start(struct iwl_priv *priv) | |
6098 | { | |
6099 | int rc = 0; | |
6100 | int thermal_spin = 0; | |
6101 | u32 rfkill; | |
6102 | ||
6103 | IWL_DEBUG_INFO("Runtime Alive received.\n"); | |
6104 | ||
6105 | if (priv->card_alive.is_valid != UCODE_VALID_OK) { | |
6106 | /* We had an error bringing up the hardware, so take it | |
6107 | * all the way back down so we can try again */ | |
6108 | IWL_DEBUG_INFO("Alive failed.\n"); | |
6109 | goto restart; | |
6110 | } | |
6111 | ||
6112 | /* Initialize uCode has loaded Runtime uCode ... verify inst image. | |
6113 | * This is a paranoid check, because we would not have gotten the | |
6114 | * "runtime" alive if code weren't properly loaded. */ | |
6115 | if (iwl_verify_ucode(priv)) { | |
6116 | /* Runtime instruction load was bad; | |
6117 | * take it all the way back down so we can try again */ | |
6118 | IWL_DEBUG_INFO("Bad runtime uCode load.\n"); | |
6119 | goto restart; | |
6120 | } | |
6121 | ||
6122 | iwl_clear_stations_table(priv); | |
6123 | ||
6124 | rc = iwl_grab_restricted_access(priv); | |
6125 | if (rc) { | |
6126 | IWL_WARNING("Can not read rfkill status from adapter\n"); | |
6127 | return; | |
6128 | } | |
6129 | ||
6130 | rfkill = iwl_read_restricted_reg(priv, APMG_RFKILL_REG); | |
6131 | IWL_DEBUG_INFO("RFKILL status: 0x%x\n", rfkill); | |
6132 | iwl_release_restricted_access(priv); | |
6133 | ||
6134 | if (rfkill & 0x1) { | |
6135 | clear_bit(STATUS_RF_KILL_HW, &priv->status); | |
6136 | /* if rfkill is not on, then wait for thermal | |
6137 | * sensor in adapter to kick in */ | |
6138 | while (iwl_hw_get_temperature(priv) == 0) { | |
6139 | thermal_spin++; | |
6140 | udelay(10); | |
6141 | } | |
6142 | ||
6143 | if (thermal_spin) | |
6144 | IWL_DEBUG_INFO("Thermal calibration took %dus\n", | |
6145 | thermal_spin * 10); | |
6146 | } else | |
6147 | set_bit(STATUS_RF_KILL_HW, &priv->status); | |
6148 | ||
6149 | /* After the ALIVE response, we can process host commands */ | |
6150 | set_bit(STATUS_ALIVE, &priv->status); | |
6151 | ||
6152 | /* Clear out the uCode error bit if it is set */ | |
6153 | clear_bit(STATUS_FW_ERROR, &priv->status); | |
6154 | ||
6155 | rc = iwl_init_channel_map(priv); | |
6156 | if (rc) { | |
6157 | IWL_ERROR("initializing regulatory failed: %d\n", rc); | |
6158 | return; | |
6159 | } | |
6160 | ||
6161 | iwl_init_geos(priv); | |
6162 | ||
6163 | if (iwl_is_rfkill(priv)) | |
6164 | return; | |
6165 | ||
6166 | if (!priv->mac80211_registered) { | |
6167 | /* Unlock so any user space entry points can call back into | |
6168 | * the driver without a deadlock... */ | |
6169 | mutex_unlock(&priv->mutex); | |
6170 | iwl_rate_control_register(priv->hw); | |
6171 | rc = ieee80211_register_hw(priv->hw); | |
6172 | priv->hw->conf.beacon_int = 100; | |
6173 | mutex_lock(&priv->mutex); | |
6174 | ||
6175 | if (rc) { | |
a5acc379 | 6176 | iwl_rate_control_unregister(priv->hw); |
b481de9c ZY |
6177 | IWL_ERROR("Failed to register network " |
6178 | "device (error %d)\n", rc); | |
6179 | return; | |
6180 | } | |
6181 | ||
6182 | priv->mac80211_registered = 1; | |
6183 | ||
6184 | iwl_reset_channel_flag(priv); | |
6185 | } else | |
6186 | ieee80211_start_queues(priv->hw); | |
6187 | ||
6188 | priv->active_rate = priv->rates_mask; | |
6189 | priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK; | |
6190 | ||
6191 | iwl_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode)); | |
6192 | ||
6193 | if (iwl_is_associated(priv)) { | |
6194 | struct iwl_rxon_cmd *active_rxon = | |
6195 | (struct iwl_rxon_cmd *)(&priv->active_rxon); | |
6196 | ||
6197 | memcpy(&priv->staging_rxon, &priv->active_rxon, | |
6198 | sizeof(priv->staging_rxon)); | |
6199 | active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK; | |
6200 | } else { | |
6201 | /* Initialize our rx_config data */ | |
6202 | iwl_connection_init_rx_config(priv); | |
6203 | memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN); | |
6204 | } | |
6205 | ||
6206 | /* Configure BT coexistence */ | |
6207 | iwl_send_bt_config(priv); | |
6208 | ||
6209 | /* Configure the adapter for unassociated operation */ | |
6210 | iwl_commit_rxon(priv); | |
6211 | ||
6212 | /* At this point, the NIC is initialized and operational */ | |
6213 | priv->notif_missed_beacons = 0; | |
6214 | set_bit(STATUS_READY, &priv->status); | |
6215 | ||
6216 | iwl3945_reg_txpower_periodic(priv); | |
6217 | ||
6218 | IWL_DEBUG_INFO("ALIVE processing complete.\n"); | |
6219 | ||
6220 | if (priv->error_recovering) | |
6221 | iwl_error_recovery(priv); | |
6222 | ||
6223 | return; | |
6224 | ||
6225 | restart: | |
6226 | queue_work(priv->workqueue, &priv->restart); | |
6227 | } | |
6228 | ||
6229 | static void iwl_cancel_deferred_work(struct iwl_priv *priv); | |
6230 | ||
6231 | static void __iwl_down(struct iwl_priv *priv) | |
6232 | { | |
6233 | unsigned long flags; | |
6234 | int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status); | |
6235 | struct ieee80211_conf *conf = NULL; | |
6236 | ||
6237 | IWL_DEBUG_INFO(DRV_NAME " is going down\n"); | |
6238 | ||
6239 | conf = ieee80211_get_hw_conf(priv->hw); | |
6240 | ||
6241 | if (!exit_pending) | |
6242 | set_bit(STATUS_EXIT_PENDING, &priv->status); | |
6243 | ||
6244 | iwl_clear_stations_table(priv); | |
6245 | ||
6246 | /* Unblock any waiting calls */ | |
6247 | wake_up_interruptible_all(&priv->wait_command_queue); | |
6248 | ||
b481de9c ZY |
6249 | /* Wipe out the EXIT_PENDING status bit if we are not actually |
6250 | * exiting the module */ | |
6251 | if (!exit_pending) | |
6252 | clear_bit(STATUS_EXIT_PENDING, &priv->status); | |
6253 | ||
6254 | /* stop and reset the on-board processor */ | |
6255 | iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET); | |
6256 | ||
6257 | /* tell the device to stop sending interrupts */ | |
6258 | iwl_disable_interrupts(priv); | |
6259 | ||
6260 | if (priv->mac80211_registered) | |
6261 | ieee80211_stop_queues(priv->hw); | |
6262 | ||
6263 | /* If we have not previously called iwl_init() then | |
6264 | * clear all bits but the RF Kill and SUSPEND bits and return */ | |
6265 | if (!iwl_is_init(priv)) { | |
6266 | priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) << | |
6267 | STATUS_RF_KILL_HW | | |
6268 | test_bit(STATUS_RF_KILL_SW, &priv->status) << | |
6269 | STATUS_RF_KILL_SW | | |
6270 | test_bit(STATUS_IN_SUSPEND, &priv->status) << | |
6271 | STATUS_IN_SUSPEND; | |
6272 | goto exit; | |
6273 | } | |
6274 | ||
6275 | /* ...otherwise clear out all the status bits but the RF Kill and | |
6276 | * SUSPEND bits and continue taking the NIC down. */ | |
6277 | priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) << | |
6278 | STATUS_RF_KILL_HW | | |
6279 | test_bit(STATUS_RF_KILL_SW, &priv->status) << | |
6280 | STATUS_RF_KILL_SW | | |
6281 | test_bit(STATUS_IN_SUSPEND, &priv->status) << | |
6282 | STATUS_IN_SUSPEND | | |
6283 | test_bit(STATUS_FW_ERROR, &priv->status) << | |
6284 | STATUS_FW_ERROR; | |
6285 | ||
6286 | spin_lock_irqsave(&priv->lock, flags); | |
6287 | iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); | |
6288 | spin_unlock_irqrestore(&priv->lock, flags); | |
6289 | ||
6290 | iwl_hw_txq_ctx_stop(priv); | |
6291 | iwl_hw_rxq_stop(priv); | |
6292 | ||
6293 | spin_lock_irqsave(&priv->lock, flags); | |
6294 | if (!iwl_grab_restricted_access(priv)) { | |
6295 | iwl_write_restricted_reg(priv, APMG_CLK_DIS_REG, | |
6296 | APMG_CLK_VAL_DMA_CLK_RQT); | |
6297 | iwl_release_restricted_access(priv); | |
6298 | } | |
6299 | spin_unlock_irqrestore(&priv->lock, flags); | |
6300 | ||
6301 | udelay(5); | |
6302 | ||
6303 | iwl_hw_nic_stop_master(priv); | |
6304 | iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET); | |
6305 | iwl_hw_nic_reset(priv); | |
6306 | ||
6307 | exit: | |
6308 | memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp)); | |
6309 | ||
6310 | if (priv->ibss_beacon) | |
6311 | dev_kfree_skb(priv->ibss_beacon); | |
6312 | priv->ibss_beacon = NULL; | |
6313 | ||
6314 | /* clear out any free frames */ | |
6315 | iwl_clear_free_frames(priv); | |
6316 | } | |
6317 | ||
6318 | static void iwl_down(struct iwl_priv *priv) | |
6319 | { | |
6320 | mutex_lock(&priv->mutex); | |
6321 | __iwl_down(priv); | |
6322 | mutex_unlock(&priv->mutex); | |
b24d22b1 ZY |
6323 | |
6324 | iwl_cancel_deferred_work(priv); | |
b481de9c ZY |
6325 | } |
6326 | ||
6327 | #define MAX_HW_RESTARTS 5 | |
6328 | ||
6329 | static int __iwl_up(struct iwl_priv *priv) | |
6330 | { | |
0795af57 | 6331 | DECLARE_MAC_BUF(mac); |
b481de9c ZY |
6332 | int rc, i; |
6333 | ||
6334 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) { | |
6335 | IWL_WARNING("Exit pending; will not bring the NIC up\n"); | |
6336 | return -EIO; | |
6337 | } | |
6338 | ||
6339 | if (test_bit(STATUS_RF_KILL_SW, &priv->status)) { | |
6340 | IWL_WARNING("Radio disabled by SW RF kill (module " | |
6341 | "parameter)\n"); | |
6342 | return 0; | |
6343 | } | |
6344 | ||
a781cf94 RC |
6345 | if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) { |
6346 | IWL_ERROR("ucode not available for device bringup\n"); | |
6347 | return -EIO; | |
6348 | } | |
6349 | ||
b481de9c ZY |
6350 | iwl_write32(priv, CSR_INT, 0xFFFFFFFF); |
6351 | ||
6352 | rc = iwl_hw_nic_init(priv); | |
6353 | if (rc) { | |
6354 | IWL_ERROR("Unable to int nic\n"); | |
6355 | return rc; | |
6356 | } | |
6357 | ||
6358 | /* make sure rfkill handshake bits are cleared */ | |
6359 | iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); | |
6360 | iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, | |
6361 | CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); | |
6362 | ||
6363 | /* clear (again), then enable host interrupts */ | |
6364 | iwl_write32(priv, CSR_INT, 0xFFFFFFFF); | |
6365 | iwl_enable_interrupts(priv); | |
6366 | ||
6367 | /* really make sure rfkill handshake bits are cleared */ | |
6368 | iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); | |
6369 | iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); | |
6370 | ||
6371 | /* Copy original ucode data image from disk into backup cache. | |
6372 | * This will be used to initialize the on-board processor's | |
6373 | * data SRAM for a clean start when the runtime program first loads. */ | |
6374 | memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr, | |
6375 | priv->ucode_data.len); | |
6376 | ||
6377 | for (i = 0; i < MAX_HW_RESTARTS; i++) { | |
6378 | ||
6379 | iwl_clear_stations_table(priv); | |
6380 | ||
6381 | /* load bootstrap state machine, | |
6382 | * load bootstrap program into processor's memory, | |
6383 | * prepare to load the "initialize" uCode */ | |
6384 | rc = iwl_load_bsm(priv); | |
6385 | ||
6386 | if (rc) { | |
6387 | IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc); | |
6388 | continue; | |
6389 | } | |
6390 | ||
6391 | /* start card; "initialize" will load runtime ucode */ | |
6392 | iwl_nic_start(priv); | |
6393 | ||
6394 | /* MAC Address location in EEPROM same for 3945/4965 */ | |
6395 | get_eeprom_mac(priv, priv->mac_addr); | |
0795af57 JP |
6396 | IWL_DEBUG_INFO("MAC address: %s\n", |
6397 | print_mac(mac, priv->mac_addr)); | |
b481de9c ZY |
6398 | |
6399 | SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr); | |
6400 | ||
6401 | IWL_DEBUG_INFO(DRV_NAME " is coming up\n"); | |
6402 | ||
6403 | return 0; | |
6404 | } | |
6405 | ||
6406 | set_bit(STATUS_EXIT_PENDING, &priv->status); | |
6407 | __iwl_down(priv); | |
6408 | ||
6409 | /* tried to restart and config the device for as long as our | |
6410 | * patience could withstand */ | |
6411 | IWL_ERROR("Unable to initialize device after %d attempts.\n", i); | |
6412 | return -EIO; | |
6413 | } | |
6414 | ||
6415 | ||
6416 | /***************************************************************************** | |
6417 | * | |
6418 | * Workqueue callbacks | |
6419 | * | |
6420 | *****************************************************************************/ | |
6421 | ||
6422 | static void iwl_bg_init_alive_start(struct work_struct *data) | |
6423 | { | |
6424 | struct iwl_priv *priv = | |
6425 | container_of(data, struct iwl_priv, init_alive_start.work); | |
6426 | ||
6427 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
6428 | return; | |
6429 | ||
6430 | mutex_lock(&priv->mutex); | |
6431 | iwl_init_alive_start(priv); | |
6432 | mutex_unlock(&priv->mutex); | |
6433 | } | |
6434 | ||
6435 | static void iwl_bg_alive_start(struct work_struct *data) | |
6436 | { | |
6437 | struct iwl_priv *priv = | |
6438 | container_of(data, struct iwl_priv, alive_start.work); | |
6439 | ||
6440 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
6441 | return; | |
6442 | ||
6443 | mutex_lock(&priv->mutex); | |
6444 | iwl_alive_start(priv); | |
6445 | mutex_unlock(&priv->mutex); | |
6446 | } | |
6447 | ||
6448 | static void iwl_bg_rf_kill(struct work_struct *work) | |
6449 | { | |
6450 | struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill); | |
6451 | ||
6452 | wake_up_interruptible(&priv->wait_command_queue); | |
6453 | ||
6454 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
6455 | return; | |
6456 | ||
6457 | mutex_lock(&priv->mutex); | |
6458 | ||
6459 | if (!iwl_is_rfkill(priv)) { | |
6460 | IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL, | |
6461 | "HW and/or SW RF Kill no longer active, restarting " | |
6462 | "device\n"); | |
6463 | if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
6464 | queue_work(priv->workqueue, &priv->restart); | |
6465 | } else { | |
6466 | ||
6467 | if (!test_bit(STATUS_RF_KILL_HW, &priv->status)) | |
6468 | IWL_DEBUG_RF_KILL("Can not turn radio back on - " | |
6469 | "disabled by SW switch\n"); | |
6470 | else | |
6471 | IWL_WARNING("Radio Frequency Kill Switch is On:\n" | |
6472 | "Kill switch must be turned off for " | |
6473 | "wireless networking to work.\n"); | |
6474 | } | |
6475 | mutex_unlock(&priv->mutex); | |
6476 | } | |
6477 | ||
6478 | #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ) | |
6479 | ||
6480 | static void iwl_bg_scan_check(struct work_struct *data) | |
6481 | { | |
6482 | struct iwl_priv *priv = | |
6483 | container_of(data, struct iwl_priv, scan_check.work); | |
6484 | ||
6485 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
6486 | return; | |
6487 | ||
6488 | mutex_lock(&priv->mutex); | |
6489 | if (test_bit(STATUS_SCANNING, &priv->status) || | |
6490 | test_bit(STATUS_SCAN_ABORTING, &priv->status)) { | |
6491 | IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, | |
6492 | "Scan completion watchdog resetting adapter (%dms)\n", | |
6493 | jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG)); | |
15e869d8 | 6494 | |
b481de9c | 6495 | if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) |
15e869d8 | 6496 | iwl_send_scan_abort(priv); |
b481de9c ZY |
6497 | } |
6498 | mutex_unlock(&priv->mutex); | |
6499 | } | |
6500 | ||
6501 | static void iwl_bg_request_scan(struct work_struct *data) | |
6502 | { | |
6503 | struct iwl_priv *priv = | |
6504 | container_of(data, struct iwl_priv, request_scan); | |
6505 | struct iwl_host_cmd cmd = { | |
6506 | .id = REPLY_SCAN_CMD, | |
6507 | .len = sizeof(struct iwl_scan_cmd), | |
6508 | .meta.flags = CMD_SIZE_HUGE, | |
6509 | }; | |
6510 | int rc = 0; | |
6511 | struct iwl_scan_cmd *scan; | |
6512 | struct ieee80211_conf *conf = NULL; | |
6513 | u8 direct_mask; | |
6514 | int phymode; | |
6515 | ||
6516 | conf = ieee80211_get_hw_conf(priv->hw); | |
6517 | ||
6518 | mutex_lock(&priv->mutex); | |
6519 | ||
6520 | if (!iwl_is_ready(priv)) { | |
6521 | IWL_WARNING("request scan called when driver not ready.\n"); | |
6522 | goto done; | |
6523 | } | |
6524 | ||
6525 | /* Make sure the scan wasn't cancelled before this queued work | |
6526 | * was given the chance to run... */ | |
6527 | if (!test_bit(STATUS_SCANNING, &priv->status)) | |
6528 | goto done; | |
6529 | ||
6530 | /* This should never be called or scheduled if there is currently | |
6531 | * a scan active in the hardware. */ | |
6532 | if (test_bit(STATUS_SCAN_HW, &priv->status)) { | |
6533 | IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. " | |
6534 | "Ignoring second request.\n"); | |
6535 | rc = -EIO; | |
6536 | goto done; | |
6537 | } | |
6538 | ||
6539 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) { | |
6540 | IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n"); | |
6541 | goto done; | |
6542 | } | |
6543 | ||
6544 | if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) { | |
6545 | IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n"); | |
6546 | goto done; | |
6547 | } | |
6548 | ||
6549 | if (iwl_is_rfkill(priv)) { | |
6550 | IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n"); | |
6551 | goto done; | |
6552 | } | |
6553 | ||
6554 | if (!test_bit(STATUS_READY, &priv->status)) { | |
6555 | IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n"); | |
6556 | goto done; | |
6557 | } | |
6558 | ||
6559 | if (!priv->scan_bands) { | |
6560 | IWL_DEBUG_HC("Aborting scan due to no requested bands\n"); | |
6561 | goto done; | |
6562 | } | |
6563 | ||
6564 | if (!priv->scan) { | |
6565 | priv->scan = kmalloc(sizeof(struct iwl_scan_cmd) + | |
6566 | IWL_MAX_SCAN_SIZE, GFP_KERNEL); | |
6567 | if (!priv->scan) { | |
6568 | rc = -ENOMEM; | |
6569 | goto done; | |
6570 | } | |
6571 | } | |
6572 | scan = priv->scan; | |
6573 | memset(scan, 0, sizeof(struct iwl_scan_cmd) + IWL_MAX_SCAN_SIZE); | |
6574 | ||
6575 | scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH; | |
6576 | scan->quiet_time = IWL_ACTIVE_QUIET_TIME; | |
6577 | ||
6578 | if (iwl_is_associated(priv)) { | |
6579 | u16 interval = 0; | |
6580 | u32 extra; | |
6581 | u32 suspend_time = 100; | |
6582 | u32 scan_suspend_time = 100; | |
6583 | unsigned long flags; | |
6584 | ||
6585 | IWL_DEBUG_INFO("Scanning while associated...\n"); | |
6586 | ||
6587 | spin_lock_irqsave(&priv->lock, flags); | |
6588 | interval = priv->beacon_int; | |
6589 | spin_unlock_irqrestore(&priv->lock, flags); | |
6590 | ||
6591 | scan->suspend_time = 0; | |
15e869d8 | 6592 | scan->max_out_time = cpu_to_le32(200 * 1024); |
b481de9c ZY |
6593 | if (!interval) |
6594 | interval = suspend_time; | |
6595 | /* | |
6596 | * suspend time format: | |
6597 | * 0-19: beacon interval in usec (time before exec.) | |
6598 | * 20-23: 0 | |
6599 | * 24-31: number of beacons (suspend between channels) | |
6600 | */ | |
6601 | ||
6602 | extra = (suspend_time / interval) << 24; | |
6603 | scan_suspend_time = 0xFF0FFFFF & | |
6604 | (extra | ((suspend_time % interval) * 1024)); | |
6605 | ||
6606 | scan->suspend_time = cpu_to_le32(scan_suspend_time); | |
6607 | IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n", | |
6608 | scan_suspend_time, interval); | |
6609 | } | |
6610 | ||
6611 | /* We should add the ability for user to lock to PASSIVE ONLY */ | |
6612 | if (priv->one_direct_scan) { | |
6613 | IWL_DEBUG_SCAN | |
6614 | ("Kicking off one direct scan for '%s'\n", | |
6615 | iwl_escape_essid(priv->direct_ssid, | |
6616 | priv->direct_ssid_len)); | |
6617 | scan->direct_scan[0].id = WLAN_EID_SSID; | |
6618 | scan->direct_scan[0].len = priv->direct_ssid_len; | |
6619 | memcpy(scan->direct_scan[0].ssid, | |
6620 | priv->direct_ssid, priv->direct_ssid_len); | |
6621 | direct_mask = 1; | |
6ef89d0a | 6622 | } else if (!iwl_is_associated(priv) && priv->essid_len) { |
b481de9c ZY |
6623 | scan->direct_scan[0].id = WLAN_EID_SSID; |
6624 | scan->direct_scan[0].len = priv->essid_len; | |
6625 | memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len); | |
6626 | direct_mask = 1; | |
6627 | } else | |
6628 | direct_mask = 0; | |
6629 | ||
6630 | /* We don't build a direct scan probe request; the uCode will do | |
6631 | * that based on the direct_mask added to each channel entry */ | |
6632 | scan->tx_cmd.len = cpu_to_le16( | |
6633 | iwl_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data, | |
6634 | IWL_MAX_SCAN_SIZE - sizeof(scan), 0)); | |
6635 | scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK; | |
6636 | scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id; | |
6637 | scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; | |
6638 | ||
6639 | /* flags + rate selection */ | |
6640 | ||
6641 | switch (priv->scan_bands) { | |
6642 | case 2: | |
6643 | scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK; | |
6644 | scan->tx_cmd.rate = IWL_RATE_1M_PLCP; | |
6645 | scan->good_CRC_th = 0; | |
6646 | phymode = MODE_IEEE80211G; | |
6647 | break; | |
6648 | ||
6649 | case 1: | |
6650 | scan->tx_cmd.rate = IWL_RATE_6M_PLCP; | |
6651 | scan->good_CRC_th = IWL_GOOD_CRC_TH; | |
6652 | phymode = MODE_IEEE80211A; | |
6653 | break; | |
6654 | ||
6655 | default: | |
6656 | IWL_WARNING("Invalid scan band count\n"); | |
6657 | goto done; | |
6658 | } | |
6659 | ||
6660 | /* select Rx antennas */ | |
6661 | scan->flags |= iwl3945_get_antenna_flags(priv); | |
6662 | ||
6663 | if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) | |
6664 | scan->filter_flags = RXON_FILTER_PROMISC_MSK; | |
6665 | ||
6666 | if (direct_mask) | |
6667 | IWL_DEBUG_SCAN | |
6668 | ("Initiating direct scan for %s.\n", | |
6669 | iwl_escape_essid(priv->essid, priv->essid_len)); | |
6670 | else | |
6671 | IWL_DEBUG_SCAN("Initiating indirect scan.\n"); | |
6672 | ||
6673 | scan->channel_count = | |
6674 | iwl_get_channels_for_scan( | |
6675 | priv, phymode, 1, /* active */ | |
6676 | direct_mask, | |
6677 | (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]); | |
6678 | ||
6679 | cmd.len += le16_to_cpu(scan->tx_cmd.len) + | |
6680 | scan->channel_count * sizeof(struct iwl_scan_channel); | |
6681 | cmd.data = scan; | |
6682 | scan->len = cpu_to_le16(cmd.len); | |
6683 | ||
6684 | set_bit(STATUS_SCAN_HW, &priv->status); | |
6685 | rc = iwl_send_cmd_sync(priv, &cmd); | |
6686 | if (rc) | |
6687 | goto done; | |
6688 | ||
6689 | queue_delayed_work(priv->workqueue, &priv->scan_check, | |
6690 | IWL_SCAN_CHECK_WATCHDOG); | |
6691 | ||
6692 | mutex_unlock(&priv->mutex); | |
6693 | return; | |
6694 | ||
6695 | done: | |
01ebd063 | 6696 | /* inform mac80211 scan aborted */ |
b481de9c ZY |
6697 | queue_work(priv->workqueue, &priv->scan_completed); |
6698 | mutex_unlock(&priv->mutex); | |
6699 | } | |
6700 | ||
6701 | static void iwl_bg_up(struct work_struct *data) | |
6702 | { | |
6703 | struct iwl_priv *priv = container_of(data, struct iwl_priv, up); | |
6704 | ||
6705 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
6706 | return; | |
6707 | ||
6708 | mutex_lock(&priv->mutex); | |
6709 | __iwl_up(priv); | |
6710 | mutex_unlock(&priv->mutex); | |
6711 | } | |
6712 | ||
6713 | static void iwl_bg_restart(struct work_struct *data) | |
6714 | { | |
6715 | struct iwl_priv *priv = container_of(data, struct iwl_priv, restart); | |
6716 | ||
6717 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
6718 | return; | |
6719 | ||
6720 | iwl_down(priv); | |
6721 | queue_work(priv->workqueue, &priv->up); | |
6722 | } | |
6723 | ||
6724 | static void iwl_bg_rx_replenish(struct work_struct *data) | |
6725 | { | |
6726 | struct iwl_priv *priv = | |
6727 | container_of(data, struct iwl_priv, rx_replenish); | |
6728 | ||
6729 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
6730 | return; | |
6731 | ||
6732 | mutex_lock(&priv->mutex); | |
6733 | iwl_rx_replenish(priv); | |
6734 | mutex_unlock(&priv->mutex); | |
6735 | } | |
6736 | ||
6737 | static void iwl_bg_post_associate(struct work_struct *data) | |
6738 | { | |
6739 | struct iwl_priv *priv = container_of(data, struct iwl_priv, | |
6740 | post_associate.work); | |
6741 | ||
6742 | int rc = 0; | |
6743 | struct ieee80211_conf *conf = NULL; | |
0795af57 | 6744 | DECLARE_MAC_BUF(mac); |
b481de9c ZY |
6745 | |
6746 | if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { | |
6747 | IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__); | |
6748 | return; | |
6749 | } | |
6750 | ||
6751 | ||
0795af57 JP |
6752 | IWL_DEBUG_ASSOC("Associated as %d to: %s\n", |
6753 | priv->assoc_id, | |
6754 | print_mac(mac, priv->active_rxon.bssid_addr)); | |
b481de9c ZY |
6755 | |
6756 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
6757 | return; | |
6758 | ||
6759 | mutex_lock(&priv->mutex); | |
6760 | ||
6ef89d0a MA |
6761 | if (!priv->interface_id || !priv->is_open) { |
6762 | mutex_unlock(&priv->mutex); | |
6763 | return; | |
6764 | } | |
15e869d8 MA |
6765 | iwl_scan_cancel_timeout(priv, 200); |
6766 | ||
b481de9c ZY |
6767 | conf = ieee80211_get_hw_conf(priv->hw); |
6768 | ||
6769 | priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; | |
6770 | iwl_commit_rxon(priv); | |
6771 | ||
6772 | memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd)); | |
6773 | iwl_setup_rxon_timing(priv); | |
6774 | rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING, | |
6775 | sizeof(priv->rxon_timing), &priv->rxon_timing); | |
6776 | if (rc) | |
6777 | IWL_WARNING("REPLY_RXON_TIMING failed - " | |
6778 | "Attempting to continue.\n"); | |
6779 | ||
6780 | priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK; | |
6781 | ||
6782 | priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id); | |
6783 | ||
6784 | IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n", | |
6785 | priv->assoc_id, priv->beacon_int); | |
6786 | ||
6787 | if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE) | |
6788 | priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; | |
6789 | else | |
6790 | priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; | |
6791 | ||
6792 | if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) { | |
6793 | if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) | |
6794 | priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK; | |
6795 | else | |
6796 | priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK; | |
6797 | ||
6798 | if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) | |
6799 | priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK; | |
6800 | ||
6801 | } | |
6802 | ||
6803 | iwl_commit_rxon(priv); | |
6804 | ||
6805 | switch (priv->iw_mode) { | |
6806 | case IEEE80211_IF_TYPE_STA: | |
6807 | iwl_rate_scale_init(priv->hw, IWL_AP_ID); | |
6808 | break; | |
6809 | ||
6810 | case IEEE80211_IF_TYPE_IBSS: | |
6811 | ||
6812 | /* clear out the station table */ | |
6813 | iwl_clear_stations_table(priv); | |
6814 | ||
556f8db7 ZY |
6815 | iwl_add_station(priv, BROADCAST_ADDR, 0, 0); |
6816 | iwl_add_station(priv, priv->bssid, 0, 0); | |
b481de9c ZY |
6817 | iwl3945_sync_sta(priv, IWL_STA_ID, |
6818 | (priv->phymode == MODE_IEEE80211A)? | |
6819 | IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP, | |
6820 | CMD_ASYNC); | |
6821 | iwl_rate_scale_init(priv->hw, IWL_STA_ID); | |
6822 | iwl_send_beacon_cmd(priv); | |
6823 | ||
6824 | break; | |
6825 | ||
6826 | default: | |
6827 | IWL_ERROR("%s Should not be called in %d mode\n", | |
6828 | __FUNCTION__, priv->iw_mode); | |
6829 | break; | |
6830 | } | |
6831 | ||
6832 | iwl_sequence_reset(priv); | |
6833 | ||
6834 | #ifdef CONFIG_IWLWIFI_QOS | |
6835 | iwl_activate_qos(priv, 0); | |
6836 | #endif /* CONFIG_IWLWIFI_QOS */ | |
6837 | mutex_unlock(&priv->mutex); | |
6838 | } | |
6839 | ||
6840 | static void iwl_bg_abort_scan(struct work_struct *work) | |
6841 | { | |
6842 | struct iwl_priv *priv = container_of(work, struct iwl_priv, | |
6843 | abort_scan); | |
6844 | ||
6845 | if (!iwl_is_ready(priv)) | |
6846 | return; | |
6847 | ||
6848 | mutex_lock(&priv->mutex); | |
6849 | ||
6850 | set_bit(STATUS_SCAN_ABORTING, &priv->status); | |
6851 | iwl_send_scan_abort(priv); | |
6852 | ||
6853 | mutex_unlock(&priv->mutex); | |
6854 | } | |
6855 | ||
6856 | static void iwl_bg_scan_completed(struct work_struct *work) | |
6857 | { | |
6858 | struct iwl_priv *priv = | |
6859 | container_of(work, struct iwl_priv, scan_completed); | |
6860 | ||
6861 | IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n"); | |
6862 | ||
6863 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
6864 | return; | |
6865 | ||
6866 | ieee80211_scan_completed(priv->hw); | |
6867 | ||
6868 | /* Since setting the TXPOWER may have been deferred while | |
6869 | * performing the scan, fire one off */ | |
6870 | mutex_lock(&priv->mutex); | |
6871 | iwl_hw_reg_send_txpower(priv); | |
6872 | mutex_unlock(&priv->mutex); | |
6873 | } | |
6874 | ||
6875 | /***************************************************************************** | |
6876 | * | |
6877 | * mac80211 entry point functions | |
6878 | * | |
6879 | *****************************************************************************/ | |
6880 | ||
4150c572 | 6881 | static int iwl_mac_start(struct ieee80211_hw *hw) |
b481de9c ZY |
6882 | { |
6883 | struct iwl_priv *priv = hw->priv; | |
6884 | ||
6885 | IWL_DEBUG_MAC80211("enter\n"); | |
6886 | ||
6887 | /* we should be verifying the device is ready to be opened */ | |
6888 | mutex_lock(&priv->mutex); | |
6889 | ||
6890 | priv->is_open = 1; | |
6891 | ||
6892 | if (!iwl_is_rfkill(priv)) | |
6893 | ieee80211_start_queues(priv->hw); | |
6894 | ||
6895 | mutex_unlock(&priv->mutex); | |
6896 | IWL_DEBUG_MAC80211("leave\n"); | |
6897 | return 0; | |
6898 | } | |
6899 | ||
4150c572 | 6900 | static void iwl_mac_stop(struct ieee80211_hw *hw) |
b481de9c ZY |
6901 | { |
6902 | struct iwl_priv *priv = hw->priv; | |
6903 | ||
6904 | IWL_DEBUG_MAC80211("enter\n"); | |
6ef89d0a MA |
6905 | |
6906 | ||
6907 | mutex_lock(&priv->mutex); | |
6908 | /* stop mac, cancel any scan request and clear | |
6909 | * RXON_FILTER_ASSOC_MSK BIT | |
6910 | */ | |
b481de9c | 6911 | priv->is_open = 0; |
6ef89d0a MA |
6912 | iwl_scan_cancel_timeout(priv, 100); |
6913 | cancel_delayed_work(&priv->post_associate); | |
6914 | priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; | |
6915 | iwl_commit_rxon(priv); | |
6916 | mutex_unlock(&priv->mutex); | |
6917 | ||
b481de9c | 6918 | IWL_DEBUG_MAC80211("leave\n"); |
b481de9c ZY |
6919 | } |
6920 | ||
6921 | static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb, | |
6922 | struct ieee80211_tx_control *ctl) | |
6923 | { | |
6924 | struct iwl_priv *priv = hw->priv; | |
6925 | ||
6926 | IWL_DEBUG_MAC80211("enter\n"); | |
6927 | ||
6928 | if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) { | |
6929 | IWL_DEBUG_MAC80211("leave - monitor\n"); | |
6930 | return -1; | |
6931 | } | |
6932 | ||
6933 | IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len, | |
6934 | ctl->tx_rate); | |
6935 | ||
6936 | if (iwl_tx_skb(priv, skb, ctl)) | |
6937 | dev_kfree_skb_any(skb); | |
6938 | ||
6939 | IWL_DEBUG_MAC80211("leave\n"); | |
6940 | return 0; | |
6941 | } | |
6942 | ||
6943 | static int iwl_mac_add_interface(struct ieee80211_hw *hw, | |
6944 | struct ieee80211_if_init_conf *conf) | |
6945 | { | |
6946 | struct iwl_priv *priv = hw->priv; | |
6947 | unsigned long flags; | |
0795af57 | 6948 | DECLARE_MAC_BUF(mac); |
b481de9c ZY |
6949 | |
6950 | IWL_DEBUG_MAC80211("enter: id %d, type %d\n", conf->if_id, conf->type); | |
b481de9c ZY |
6951 | |
6952 | if (priv->interface_id) { | |
6953 | IWL_DEBUG_MAC80211("leave - interface_id != 0\n"); | |
864792e3 | 6954 | return -EOPNOTSUPP; |
b481de9c ZY |
6955 | } |
6956 | ||
6957 | spin_lock_irqsave(&priv->lock, flags); | |
6958 | priv->interface_id = conf->if_id; | |
6959 | ||
6960 | spin_unlock_irqrestore(&priv->lock, flags); | |
6961 | ||
6962 | mutex_lock(&priv->mutex); | |
864792e3 TW |
6963 | |
6964 | if (conf->mac_addr) { | |
6965 | IWL_DEBUG_MAC80211("Set: %s\n", print_mac(mac, conf->mac_addr)); | |
6966 | memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN); | |
6967 | } | |
6968 | ||
b481de9c ZY |
6969 | iwl_set_mode(priv, conf->type); |
6970 | ||
6971 | IWL_DEBUG_MAC80211("leave\n"); | |
6972 | mutex_unlock(&priv->mutex); | |
6973 | ||
6974 | return 0; | |
6975 | } | |
6976 | ||
6977 | /** | |
6978 | * iwl_mac_config - mac80211 config callback | |
6979 | * | |
6980 | * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to | |
6981 | * be set inappropriately and the driver currently sets the hardware up to | |
6982 | * use it whenever needed. | |
6983 | */ | |
6984 | static int iwl_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf) | |
6985 | { | |
6986 | struct iwl_priv *priv = hw->priv; | |
6987 | const struct iwl_channel_info *ch_info; | |
6988 | unsigned long flags; | |
6989 | ||
6990 | mutex_lock(&priv->mutex); | |
6991 | IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel); | |
6992 | ||
6993 | if (!iwl_is_ready(priv)) { | |
6994 | IWL_DEBUG_MAC80211("leave - not ready\n"); | |
6995 | mutex_unlock(&priv->mutex); | |
6996 | return -EIO; | |
6997 | } | |
6998 | ||
6999 | /* TODO: Figure out how to get ieee80211_local->sta_scanning w/ only | |
01ebd063 | 7000 | * what is exposed through include/ declarations */ |
b481de9c ZY |
7001 | if (unlikely(!iwl_param_disable_hw_scan && |
7002 | test_bit(STATUS_SCANNING, &priv->status))) { | |
7003 | IWL_DEBUG_MAC80211("leave - scanning\n"); | |
7004 | mutex_unlock(&priv->mutex); | |
7005 | return 0; | |
7006 | } | |
7007 | ||
7008 | spin_lock_irqsave(&priv->lock, flags); | |
7009 | ||
7010 | ch_info = iwl_get_channel_info(priv, conf->phymode, conf->channel); | |
7011 | if (!is_channel_valid(ch_info)) { | |
7012 | IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n", | |
7013 | conf->channel, conf->phymode); | |
7014 | IWL_DEBUG_MAC80211("leave - invalid channel\n"); | |
7015 | spin_unlock_irqrestore(&priv->lock, flags); | |
7016 | mutex_unlock(&priv->mutex); | |
7017 | return -EINVAL; | |
7018 | } | |
7019 | ||
7020 | iwl_set_rxon_channel(priv, conf->phymode, conf->channel); | |
7021 | ||
7022 | iwl_set_flags_for_phymode(priv, conf->phymode); | |
7023 | ||
7024 | /* The list of supported rates and rate mask can be different | |
7025 | * for each phymode; since the phymode may have changed, reset | |
7026 | * the rate mask to what mac80211 lists */ | |
7027 | iwl_set_rate(priv); | |
7028 | ||
7029 | spin_unlock_irqrestore(&priv->lock, flags); | |
7030 | ||
7031 | #ifdef IEEE80211_CONF_CHANNEL_SWITCH | |
7032 | if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) { | |
7033 | iwl_hw_channel_switch(priv, conf->channel); | |
7034 | mutex_unlock(&priv->mutex); | |
7035 | return 0; | |
7036 | } | |
7037 | #endif | |
7038 | ||
7039 | iwl_radio_kill_sw(priv, !conf->radio_enabled); | |
7040 | ||
7041 | if (!conf->radio_enabled) { | |
7042 | IWL_DEBUG_MAC80211("leave - radio disabled\n"); | |
7043 | mutex_unlock(&priv->mutex); | |
7044 | return 0; | |
7045 | } | |
7046 | ||
7047 | if (iwl_is_rfkill(priv)) { | |
7048 | IWL_DEBUG_MAC80211("leave - RF kill\n"); | |
7049 | mutex_unlock(&priv->mutex); | |
7050 | return -EIO; | |
7051 | } | |
7052 | ||
7053 | iwl_set_rate(priv); | |
7054 | ||
7055 | if (memcmp(&priv->active_rxon, | |
7056 | &priv->staging_rxon, sizeof(priv->staging_rxon))) | |
7057 | iwl_commit_rxon(priv); | |
7058 | else | |
7059 | IWL_DEBUG_INFO("No re-sending same RXON configuration.\n"); | |
7060 | ||
7061 | IWL_DEBUG_MAC80211("leave\n"); | |
7062 | ||
7063 | mutex_unlock(&priv->mutex); | |
7064 | ||
7065 | return 0; | |
7066 | } | |
7067 | ||
7068 | static void iwl_config_ap(struct iwl_priv *priv) | |
7069 | { | |
7070 | int rc = 0; | |
7071 | ||
7072 | if (priv->status & STATUS_EXIT_PENDING) | |
7073 | return; | |
7074 | ||
7075 | /* The following should be done only at AP bring up */ | |
7076 | if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) { | |
7077 | ||
7078 | /* RXON - unassoc (to set timing command) */ | |
7079 | priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; | |
7080 | iwl_commit_rxon(priv); | |
7081 | ||
7082 | /* RXON Timing */ | |
7083 | memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd)); | |
7084 | iwl_setup_rxon_timing(priv); | |
7085 | rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING, | |
7086 | sizeof(priv->rxon_timing), &priv->rxon_timing); | |
7087 | if (rc) | |
7088 | IWL_WARNING("REPLY_RXON_TIMING failed - " | |
7089 | "Attempting to continue.\n"); | |
7090 | ||
7091 | /* FIXME: what should be the assoc_id for AP? */ | |
7092 | priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id); | |
7093 | if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE) | |
7094 | priv->staging_rxon.flags |= | |
7095 | RXON_FLG_SHORT_PREAMBLE_MSK; | |
7096 | else | |
7097 | priv->staging_rxon.flags &= | |
7098 | ~RXON_FLG_SHORT_PREAMBLE_MSK; | |
7099 | ||
7100 | if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) { | |
7101 | if (priv->assoc_capability & | |
7102 | WLAN_CAPABILITY_SHORT_SLOT_TIME) | |
7103 | priv->staging_rxon.flags |= | |
7104 | RXON_FLG_SHORT_SLOT_MSK; | |
7105 | else | |
7106 | priv->staging_rxon.flags &= | |
7107 | ~RXON_FLG_SHORT_SLOT_MSK; | |
7108 | ||
7109 | if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) | |
7110 | priv->staging_rxon.flags &= | |
7111 | ~RXON_FLG_SHORT_SLOT_MSK; | |
7112 | } | |
7113 | /* restore RXON assoc */ | |
7114 | priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK; | |
7115 | iwl_commit_rxon(priv); | |
556f8db7 ZY |
7116 | iwl_add_station(priv, BROADCAST_ADDR, 0, 0); |
7117 | } | |
7118 | iwl_send_beacon_cmd(priv); | |
b481de9c ZY |
7119 | |
7120 | /* FIXME - we need to add code here to detect a totally new | |
7121 | * configuration, reset the AP, unassoc, rxon timing, assoc, | |
7122 | * clear sta table, add BCAST sta... */ | |
7123 | } | |
7124 | ||
7125 | static int iwl_mac_config_interface(struct ieee80211_hw *hw, int if_id, | |
7126 | struct ieee80211_if_conf *conf) | |
7127 | { | |
7128 | struct iwl_priv *priv = hw->priv; | |
0795af57 | 7129 | DECLARE_MAC_BUF(mac); |
b481de9c ZY |
7130 | unsigned long flags; |
7131 | int rc; | |
7132 | ||
7133 | if (conf == NULL) | |
7134 | return -EIO; | |
7135 | ||
4150c572 JB |
7136 | /* XXX: this MUST use conf->mac_addr */ |
7137 | ||
b481de9c ZY |
7138 | if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) && |
7139 | (!conf->beacon || !conf->ssid_len)) { | |
7140 | IWL_DEBUG_MAC80211 | |
7141 | ("Leaving in AP mode because HostAPD is not ready.\n"); | |
7142 | return 0; | |
7143 | } | |
7144 | ||
7145 | mutex_lock(&priv->mutex); | |
7146 | ||
7147 | IWL_DEBUG_MAC80211("enter: interface id %d\n", if_id); | |
7148 | if (conf->bssid) | |
0795af57 JP |
7149 | IWL_DEBUG_MAC80211("bssid: %s\n", |
7150 | print_mac(mac, conf->bssid)); | |
b481de9c | 7151 | |
4150c572 JB |
7152 | /* |
7153 | * very dubious code was here; the probe filtering flag is never set: | |
7154 | * | |
b481de9c ZY |
7155 | if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) && |
7156 | !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) { | |
4150c572 JB |
7157 | */ |
7158 | if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) { | |
b481de9c ZY |
7159 | IWL_DEBUG_MAC80211("leave - scanning\n"); |
7160 | mutex_unlock(&priv->mutex); | |
7161 | return 0; | |
7162 | } | |
7163 | ||
7164 | if (priv->interface_id != if_id) { | |
7165 | IWL_DEBUG_MAC80211("leave - interface_id != if_id\n"); | |
7166 | mutex_unlock(&priv->mutex); | |
7167 | return 0; | |
7168 | } | |
7169 | ||
7170 | if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { | |
7171 | if (!conf->bssid) { | |
7172 | conf->bssid = priv->mac_addr; | |
7173 | memcpy(priv->bssid, priv->mac_addr, ETH_ALEN); | |
0795af57 JP |
7174 | IWL_DEBUG_MAC80211("bssid was set to: %s\n", |
7175 | print_mac(mac, conf->bssid)); | |
b481de9c ZY |
7176 | } |
7177 | if (priv->ibss_beacon) | |
7178 | dev_kfree_skb(priv->ibss_beacon); | |
7179 | ||
7180 | priv->ibss_beacon = conf->beacon; | |
7181 | } | |
7182 | ||
7183 | if (conf->bssid && !is_zero_ether_addr(conf->bssid) && | |
7184 | !is_multicast_ether_addr(conf->bssid)) { | |
7185 | /* If there is currently a HW scan going on in the background | |
7186 | * then we need to cancel it else the RXON below will fail. */ | |
7187 | if (iwl_scan_cancel_timeout(priv, 100)) { | |
7188 | IWL_WARNING("Aborted scan still in progress " | |
7189 | "after 100ms\n"); | |
7190 | IWL_DEBUG_MAC80211("leaving - scan abort failed.\n"); | |
7191 | mutex_unlock(&priv->mutex); | |
7192 | return -EAGAIN; | |
7193 | } | |
7194 | memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN); | |
7195 | ||
7196 | /* TODO: Audit driver for usage of these members and see | |
7197 | * if mac80211 deprecates them (priv->bssid looks like it | |
7198 | * shouldn't be there, but I haven't scanned the IBSS code | |
7199 | * to verify) - jpk */ | |
7200 | memcpy(priv->bssid, conf->bssid, ETH_ALEN); | |
7201 | ||
7202 | if (priv->iw_mode == IEEE80211_IF_TYPE_AP) | |
7203 | iwl_config_ap(priv); | |
7204 | else { | |
b481de9c ZY |
7205 | rc = iwl_commit_rxon(priv); |
7206 | if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc) | |
556f8db7 ZY |
7207 | iwl_add_station(priv, |
7208 | priv->active_rxon.bssid_addr, 1, 0); | |
b481de9c ZY |
7209 | } |
7210 | ||
7211 | } else { | |
15e869d8 | 7212 | iwl_scan_cancel_timeout(priv, 100); |
b481de9c ZY |
7213 | priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
7214 | iwl_commit_rxon(priv); | |
7215 | } | |
7216 | ||
7217 | spin_lock_irqsave(&priv->lock, flags); | |
7218 | if (!conf->ssid_len) | |
7219 | memset(priv->essid, 0, IW_ESSID_MAX_SIZE); | |
7220 | else | |
7221 | memcpy(priv->essid, conf->ssid, conf->ssid_len); | |
7222 | ||
7223 | priv->essid_len = conf->ssid_len; | |
7224 | spin_unlock_irqrestore(&priv->lock, flags); | |
7225 | ||
7226 | IWL_DEBUG_MAC80211("leave\n"); | |
7227 | mutex_unlock(&priv->mutex); | |
7228 | ||
7229 | return 0; | |
7230 | } | |
7231 | ||
4150c572 JB |
7232 | static void iwl_configure_filter(struct ieee80211_hw *hw, |
7233 | unsigned int changed_flags, | |
7234 | unsigned int *total_flags, | |
7235 | int mc_count, struct dev_addr_list *mc_list) | |
7236 | { | |
7237 | /* | |
7238 | * XXX: dummy | |
7239 | * see also iwl_connection_init_rx_config | |
7240 | */ | |
7241 | *total_flags = 0; | |
7242 | } | |
7243 | ||
b481de9c ZY |
7244 | static void iwl_mac_remove_interface(struct ieee80211_hw *hw, |
7245 | struct ieee80211_if_init_conf *conf) | |
7246 | { | |
7247 | struct iwl_priv *priv = hw->priv; | |
7248 | ||
7249 | IWL_DEBUG_MAC80211("enter\n"); | |
7250 | ||
7251 | mutex_lock(&priv->mutex); | |
6ef89d0a MA |
7252 | |
7253 | iwl_scan_cancel_timeout(priv, 100); | |
7254 | cancel_delayed_work(&priv->post_associate); | |
7255 | priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; | |
7256 | iwl_commit_rxon(priv); | |
7257 | ||
b481de9c ZY |
7258 | if (priv->interface_id == conf->if_id) { |
7259 | priv->interface_id = 0; | |
7260 | memset(priv->bssid, 0, ETH_ALEN); | |
7261 | memset(priv->essid, 0, IW_ESSID_MAX_SIZE); | |
7262 | priv->essid_len = 0; | |
7263 | } | |
7264 | mutex_unlock(&priv->mutex); | |
7265 | ||
7266 | IWL_DEBUG_MAC80211("leave\n"); | |
7267 | ||
7268 | } | |
7269 | ||
7270 | #define IWL_DELAY_NEXT_SCAN (HZ*2) | |
7271 | static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len) | |
7272 | { | |
7273 | int rc = 0; | |
7274 | unsigned long flags; | |
7275 | struct iwl_priv *priv = hw->priv; | |
7276 | ||
7277 | IWL_DEBUG_MAC80211("enter\n"); | |
7278 | ||
15e869d8 | 7279 | mutex_lock(&priv->mutex); |
b481de9c ZY |
7280 | spin_lock_irqsave(&priv->lock, flags); |
7281 | ||
7282 | if (!iwl_is_ready_rf(priv)) { | |
7283 | rc = -EIO; | |
7284 | IWL_DEBUG_MAC80211("leave - not ready or exit pending\n"); | |
7285 | goto out_unlock; | |
7286 | } | |
7287 | ||
7288 | if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */ | |
7289 | rc = -EIO; | |
7290 | IWL_ERROR("ERROR: APs don't scan\n"); | |
7291 | goto out_unlock; | |
7292 | } | |
7293 | ||
7294 | /* if we just finished scan ask for delay */ | |
7295 | if (priv->last_scan_jiffies && | |
7296 | time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, | |
7297 | jiffies)) { | |
7298 | rc = -EAGAIN; | |
7299 | goto out_unlock; | |
7300 | } | |
7301 | if (len) { | |
7302 | IWL_DEBUG_SCAN("direct scan for " | |
7303 | "%s [%d]\n ", | |
7304 | iwl_escape_essid(ssid, len), (int)len); | |
7305 | ||
7306 | priv->one_direct_scan = 1; | |
7307 | priv->direct_ssid_len = (u8) | |
7308 | min((u8) len, (u8) IW_ESSID_MAX_SIZE); | |
7309 | memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len); | |
6ef89d0a MA |
7310 | } else |
7311 | priv->one_direct_scan = 0; | |
b481de9c ZY |
7312 | |
7313 | rc = iwl_scan_initiate(priv); | |
7314 | ||
7315 | IWL_DEBUG_MAC80211("leave\n"); | |
7316 | ||
7317 | out_unlock: | |
7318 | spin_unlock_irqrestore(&priv->lock, flags); | |
15e869d8 | 7319 | mutex_unlock(&priv->mutex); |
b481de9c ZY |
7320 | |
7321 | return rc; | |
7322 | } | |
7323 | ||
ea49c359 | 7324 | static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, |
b481de9c ZY |
7325 | const u8 *local_addr, const u8 *addr, |
7326 | struct ieee80211_key_conf *key) | |
7327 | { | |
7328 | struct iwl_priv *priv = hw->priv; | |
7329 | int rc = 0; | |
7330 | u8 sta_id; | |
7331 | ||
7332 | IWL_DEBUG_MAC80211("enter\n"); | |
7333 | ||
7334 | if (!iwl_param_hwcrypto) { | |
7335 | IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n"); | |
7336 | return -EOPNOTSUPP; | |
7337 | } | |
7338 | ||
7339 | if (is_zero_ether_addr(addr)) | |
7340 | /* only support pairwise keys */ | |
7341 | return -EOPNOTSUPP; | |
7342 | ||
7343 | sta_id = iwl_hw_find_station(priv, addr); | |
7344 | if (sta_id == IWL_INVALID_STATION) { | |
0795af57 JP |
7345 | DECLARE_MAC_BUF(mac); |
7346 | ||
7347 | IWL_DEBUG_MAC80211("leave - %s not in station map.\n", | |
7348 | print_mac(mac, addr)); | |
b481de9c ZY |
7349 | return -EINVAL; |
7350 | } | |
7351 | ||
7352 | mutex_lock(&priv->mutex); | |
7353 | ||
15e869d8 MA |
7354 | iwl_scan_cancel_timeout(priv, 100); |
7355 | ||
b481de9c ZY |
7356 | switch (cmd) { |
7357 | case SET_KEY: | |
7358 | rc = iwl_update_sta_key_info(priv, key, sta_id); | |
7359 | if (!rc) { | |
7360 | iwl_set_rxon_hwcrypto(priv, 1); | |
7361 | iwl_commit_rxon(priv); | |
7362 | key->hw_key_idx = sta_id; | |
7363 | IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n"); | |
7364 | key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; | |
7365 | } | |
7366 | break; | |
7367 | case DISABLE_KEY: | |
7368 | rc = iwl_clear_sta_key_info(priv, sta_id); | |
7369 | if (!rc) { | |
7370 | iwl_set_rxon_hwcrypto(priv, 0); | |
7371 | iwl_commit_rxon(priv); | |
7372 | IWL_DEBUG_MAC80211("disable hwcrypto key\n"); | |
7373 | } | |
7374 | break; | |
7375 | default: | |
7376 | rc = -EINVAL; | |
7377 | } | |
7378 | ||
7379 | IWL_DEBUG_MAC80211("leave\n"); | |
7380 | mutex_unlock(&priv->mutex); | |
7381 | ||
7382 | return rc; | |
7383 | } | |
7384 | ||
7385 | static int iwl_mac_conf_tx(struct ieee80211_hw *hw, int queue, | |
7386 | const struct ieee80211_tx_queue_params *params) | |
7387 | { | |
7388 | struct iwl_priv *priv = hw->priv; | |
7389 | #ifdef CONFIG_IWLWIFI_QOS | |
7390 | unsigned long flags; | |
7391 | int q; | |
7392 | #endif /* CONFIG_IWL_QOS */ | |
7393 | ||
7394 | IWL_DEBUG_MAC80211("enter\n"); | |
7395 | ||
7396 | if (!iwl_is_ready_rf(priv)) { | |
7397 | IWL_DEBUG_MAC80211("leave - RF not ready\n"); | |
7398 | return -EIO; | |
7399 | } | |
7400 | ||
7401 | if (queue >= AC_NUM) { | |
7402 | IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue); | |
7403 | return 0; | |
7404 | } | |
7405 | ||
7406 | #ifdef CONFIG_IWLWIFI_QOS | |
7407 | if (!priv->qos_data.qos_enable) { | |
7408 | priv->qos_data.qos_active = 0; | |
7409 | IWL_DEBUG_MAC80211("leave - qos not enabled\n"); | |
7410 | return 0; | |
7411 | } | |
7412 | q = AC_NUM - 1 - queue; | |
7413 | ||
7414 | spin_lock_irqsave(&priv->lock, flags); | |
7415 | ||
7416 | priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min); | |
7417 | priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max); | |
7418 | priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs; | |
7419 | priv->qos_data.def_qos_parm.ac[q].edca_txop = | |
7420 | cpu_to_le16((params->burst_time * 100)); | |
7421 | ||
7422 | priv->qos_data.def_qos_parm.ac[q].reserved1 = 0; | |
7423 | priv->qos_data.qos_active = 1; | |
7424 | ||
7425 | spin_unlock_irqrestore(&priv->lock, flags); | |
7426 | ||
7427 | mutex_lock(&priv->mutex); | |
7428 | if (priv->iw_mode == IEEE80211_IF_TYPE_AP) | |
7429 | iwl_activate_qos(priv, 1); | |
7430 | else if (priv->assoc_id && iwl_is_associated(priv)) | |
7431 | iwl_activate_qos(priv, 0); | |
7432 | ||
7433 | mutex_unlock(&priv->mutex); | |
7434 | ||
7435 | #endif /*CONFIG_IWLWIFI_QOS */ | |
7436 | ||
7437 | IWL_DEBUG_MAC80211("leave\n"); | |
7438 | return 0; | |
7439 | } | |
7440 | ||
7441 | static int iwl_mac_get_tx_stats(struct ieee80211_hw *hw, | |
7442 | struct ieee80211_tx_queue_stats *stats) | |
7443 | { | |
7444 | struct iwl_priv *priv = hw->priv; | |
7445 | int i, avail; | |
7446 | struct iwl_tx_queue *txq; | |
7447 | struct iwl_queue *q; | |
7448 | unsigned long flags; | |
7449 | ||
7450 | IWL_DEBUG_MAC80211("enter\n"); | |
7451 | ||
7452 | if (!iwl_is_ready_rf(priv)) { | |
7453 | IWL_DEBUG_MAC80211("leave - RF not ready\n"); | |
7454 | return -EIO; | |
7455 | } | |
7456 | ||
7457 | spin_lock_irqsave(&priv->lock, flags); | |
7458 | ||
7459 | for (i = 0; i < AC_NUM; i++) { | |
7460 | txq = &priv->txq[i]; | |
7461 | q = &txq->q; | |
7462 | avail = iwl_queue_space(q); | |
7463 | ||
7464 | stats->data[i].len = q->n_window - avail; | |
7465 | stats->data[i].limit = q->n_window - q->high_mark; | |
7466 | stats->data[i].count = q->n_window; | |
7467 | ||
7468 | } | |
7469 | spin_unlock_irqrestore(&priv->lock, flags); | |
7470 | ||
7471 | IWL_DEBUG_MAC80211("leave\n"); | |
7472 | ||
7473 | return 0; | |
7474 | } | |
7475 | ||
7476 | static int iwl_mac_get_stats(struct ieee80211_hw *hw, | |
7477 | struct ieee80211_low_level_stats *stats) | |
7478 | { | |
7479 | IWL_DEBUG_MAC80211("enter\n"); | |
7480 | IWL_DEBUG_MAC80211("leave\n"); | |
7481 | ||
7482 | return 0; | |
7483 | } | |
7484 | ||
7485 | static u64 iwl_mac_get_tsf(struct ieee80211_hw *hw) | |
7486 | { | |
7487 | IWL_DEBUG_MAC80211("enter\n"); | |
7488 | IWL_DEBUG_MAC80211("leave\n"); | |
7489 | ||
7490 | return 0; | |
7491 | } | |
7492 | ||
7493 | static void iwl_mac_reset_tsf(struct ieee80211_hw *hw) | |
7494 | { | |
7495 | struct iwl_priv *priv = hw->priv; | |
7496 | unsigned long flags; | |
7497 | ||
7498 | mutex_lock(&priv->mutex); | |
7499 | IWL_DEBUG_MAC80211("enter\n"); | |
7500 | ||
7501 | #ifdef CONFIG_IWLWIFI_QOS | |
7502 | iwl_reset_qos(priv); | |
7503 | #endif | |
7504 | cancel_delayed_work(&priv->post_associate); | |
7505 | ||
7506 | spin_lock_irqsave(&priv->lock, flags); | |
7507 | priv->assoc_id = 0; | |
7508 | priv->assoc_capability = 0; | |
7509 | priv->call_post_assoc_from_beacon = 0; | |
7510 | ||
7511 | /* new association get rid of ibss beacon skb */ | |
7512 | if (priv->ibss_beacon) | |
7513 | dev_kfree_skb(priv->ibss_beacon); | |
7514 | ||
7515 | priv->ibss_beacon = NULL; | |
7516 | ||
7517 | priv->beacon_int = priv->hw->conf.beacon_int; | |
7518 | priv->timestamp1 = 0; | |
7519 | priv->timestamp0 = 0; | |
7520 | if ((priv->iw_mode == IEEE80211_IF_TYPE_STA)) | |
7521 | priv->beacon_int = 0; | |
7522 | ||
7523 | spin_unlock_irqrestore(&priv->lock, flags); | |
7524 | ||
15e869d8 MA |
7525 | /* we are restarting association process |
7526 | * clear RXON_FILTER_ASSOC_MSK bit | |
7527 | */ | |
7528 | if (priv->iw_mode != IEEE80211_IF_TYPE_AP) { | |
7529 | iwl_scan_cancel_timeout(priv, 100); | |
7530 | priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; | |
7531 | iwl_commit_rxon(priv); | |
7532 | } | |
7533 | ||
b481de9c ZY |
7534 | /* Per mac80211.h: This is only used in IBSS mode... */ |
7535 | if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) { | |
15e869d8 | 7536 | |
b481de9c ZY |
7537 | IWL_DEBUG_MAC80211("leave - not in IBSS\n"); |
7538 | mutex_unlock(&priv->mutex); | |
7539 | return; | |
7540 | } | |
7541 | ||
7542 | if (!iwl_is_ready_rf(priv)) { | |
7543 | IWL_DEBUG_MAC80211("leave - not ready\n"); | |
7544 | mutex_unlock(&priv->mutex); | |
7545 | return; | |
7546 | } | |
7547 | ||
7548 | priv->only_active_channel = 0; | |
7549 | ||
7550 | iwl_set_rate(priv); | |
7551 | ||
7552 | mutex_unlock(&priv->mutex); | |
7553 | ||
7554 | IWL_DEBUG_MAC80211("leave\n"); | |
7555 | ||
7556 | } | |
7557 | ||
7558 | static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb, | |
7559 | struct ieee80211_tx_control *control) | |
7560 | { | |
7561 | struct iwl_priv *priv = hw->priv; | |
7562 | unsigned long flags; | |
7563 | ||
7564 | mutex_lock(&priv->mutex); | |
7565 | IWL_DEBUG_MAC80211("enter\n"); | |
7566 | ||
7567 | if (!iwl_is_ready_rf(priv)) { | |
7568 | IWL_DEBUG_MAC80211("leave - RF not ready\n"); | |
7569 | mutex_unlock(&priv->mutex); | |
7570 | return -EIO; | |
7571 | } | |
7572 | ||
7573 | if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) { | |
7574 | IWL_DEBUG_MAC80211("leave - not IBSS\n"); | |
7575 | mutex_unlock(&priv->mutex); | |
7576 | return -EIO; | |
7577 | } | |
7578 | ||
7579 | spin_lock_irqsave(&priv->lock, flags); | |
7580 | ||
7581 | if (priv->ibss_beacon) | |
7582 | dev_kfree_skb(priv->ibss_beacon); | |
7583 | ||
7584 | priv->ibss_beacon = skb; | |
7585 | ||
7586 | priv->assoc_id = 0; | |
7587 | ||
7588 | IWL_DEBUG_MAC80211("leave\n"); | |
7589 | spin_unlock_irqrestore(&priv->lock, flags); | |
7590 | ||
7591 | #ifdef CONFIG_IWLWIFI_QOS | |
7592 | iwl_reset_qos(priv); | |
7593 | #endif | |
7594 | ||
7595 | queue_work(priv->workqueue, &priv->post_associate.work); | |
7596 | ||
7597 | mutex_unlock(&priv->mutex); | |
7598 | ||
7599 | return 0; | |
7600 | } | |
7601 | ||
7602 | /***************************************************************************** | |
7603 | * | |
7604 | * sysfs attributes | |
7605 | * | |
7606 | *****************************************************************************/ | |
7607 | ||
7608 | #ifdef CONFIG_IWLWIFI_DEBUG | |
7609 | ||
7610 | /* | |
7611 | * The following adds a new attribute to the sysfs representation | |
7612 | * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/) | |
7613 | * used for controlling the debug level. | |
7614 | * | |
7615 | * See the level definitions in iwl for details. | |
7616 | */ | |
7617 | ||
7618 | static ssize_t show_debug_level(struct device_driver *d, char *buf) | |
7619 | { | |
7620 | return sprintf(buf, "0x%08X\n", iwl_debug_level); | |
7621 | } | |
7622 | static ssize_t store_debug_level(struct device_driver *d, | |
7623 | const char *buf, size_t count) | |
7624 | { | |
7625 | char *p = (char *)buf; | |
7626 | u32 val; | |
7627 | ||
7628 | val = simple_strtoul(p, &p, 0); | |
7629 | if (p == buf) | |
7630 | printk(KERN_INFO DRV_NAME | |
7631 | ": %s is not in hex or decimal form.\n", buf); | |
7632 | else | |
7633 | iwl_debug_level = val; | |
7634 | ||
7635 | return strnlen(buf, count); | |
7636 | } | |
7637 | ||
7638 | static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO, | |
7639 | show_debug_level, store_debug_level); | |
7640 | ||
7641 | #endif /* CONFIG_IWLWIFI_DEBUG */ | |
7642 | ||
7643 | static ssize_t show_rf_kill(struct device *d, | |
7644 | struct device_attribute *attr, char *buf) | |
7645 | { | |
7646 | /* | |
7647 | * 0 - RF kill not enabled | |
7648 | * 1 - SW based RF kill active (sysfs) | |
7649 | * 2 - HW based RF kill active | |
7650 | * 3 - Both HW and SW based RF kill active | |
7651 | */ | |
7652 | struct iwl_priv *priv = (struct iwl_priv *)d->driver_data; | |
7653 | int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) | | |
7654 | (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0); | |
7655 | ||
7656 | return sprintf(buf, "%i\n", val); | |
7657 | } | |
7658 | ||
7659 | static ssize_t store_rf_kill(struct device *d, | |
7660 | struct device_attribute *attr, | |
7661 | const char *buf, size_t count) | |
7662 | { | |
7663 | struct iwl_priv *priv = (struct iwl_priv *)d->driver_data; | |
7664 | ||
7665 | mutex_lock(&priv->mutex); | |
7666 | iwl_radio_kill_sw(priv, buf[0] == '1'); | |
7667 | mutex_unlock(&priv->mutex); | |
7668 | ||
7669 | return count; | |
7670 | } | |
7671 | ||
7672 | static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill); | |
7673 | ||
7674 | static ssize_t show_temperature(struct device *d, | |
7675 | struct device_attribute *attr, char *buf) | |
7676 | { | |
7677 | struct iwl_priv *priv = (struct iwl_priv *)d->driver_data; | |
7678 | ||
7679 | if (!iwl_is_alive(priv)) | |
7680 | return -EAGAIN; | |
7681 | ||
7682 | return sprintf(buf, "%d\n", iwl_hw_get_temperature(priv)); | |
7683 | } | |
7684 | ||
7685 | static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL); | |
7686 | ||
7687 | static ssize_t show_rs_window(struct device *d, | |
7688 | struct device_attribute *attr, | |
7689 | char *buf) | |
7690 | { | |
7691 | struct iwl_priv *priv = d->driver_data; | |
7692 | return iwl_fill_rs_info(priv->hw, buf, IWL_AP_ID); | |
7693 | } | |
7694 | static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL); | |
7695 | ||
7696 | static ssize_t show_tx_power(struct device *d, | |
7697 | struct device_attribute *attr, char *buf) | |
7698 | { | |
7699 | struct iwl_priv *priv = (struct iwl_priv *)d->driver_data; | |
7700 | return sprintf(buf, "%d\n", priv->user_txpower_limit); | |
7701 | } | |
7702 | ||
7703 | static ssize_t store_tx_power(struct device *d, | |
7704 | struct device_attribute *attr, | |
7705 | const char *buf, size_t count) | |
7706 | { | |
7707 | struct iwl_priv *priv = (struct iwl_priv *)d->driver_data; | |
7708 | char *p = (char *)buf; | |
7709 | u32 val; | |
7710 | ||
7711 | val = simple_strtoul(p, &p, 10); | |
7712 | if (p == buf) | |
7713 | printk(KERN_INFO DRV_NAME | |
7714 | ": %s is not in decimal form.\n", buf); | |
7715 | else | |
7716 | iwl_hw_reg_set_txpower(priv, val); | |
7717 | ||
7718 | return count; | |
7719 | } | |
7720 | ||
7721 | static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power); | |
7722 | ||
7723 | static ssize_t show_flags(struct device *d, | |
7724 | struct device_attribute *attr, char *buf) | |
7725 | { | |
7726 | struct iwl_priv *priv = (struct iwl_priv *)d->driver_data; | |
7727 | ||
7728 | return sprintf(buf, "0x%04X\n", priv->active_rxon.flags); | |
7729 | } | |
7730 | ||
7731 | static ssize_t store_flags(struct device *d, | |
7732 | struct device_attribute *attr, | |
7733 | const char *buf, size_t count) | |
7734 | { | |
7735 | struct iwl_priv *priv = (struct iwl_priv *)d->driver_data; | |
7736 | u32 flags = simple_strtoul(buf, NULL, 0); | |
7737 | ||
7738 | mutex_lock(&priv->mutex); | |
7739 | if (le32_to_cpu(priv->staging_rxon.flags) != flags) { | |
7740 | /* Cancel any currently running scans... */ | |
7741 | if (iwl_scan_cancel_timeout(priv, 100)) | |
7742 | IWL_WARNING("Could not cancel scan.\n"); | |
7743 | else { | |
7744 | IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n", | |
7745 | flags); | |
7746 | priv->staging_rxon.flags = cpu_to_le32(flags); | |
7747 | iwl_commit_rxon(priv); | |
7748 | } | |
7749 | } | |
7750 | mutex_unlock(&priv->mutex); | |
7751 | ||
7752 | return count; | |
7753 | } | |
7754 | ||
7755 | static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags); | |
7756 | ||
7757 | static ssize_t show_filter_flags(struct device *d, | |
7758 | struct device_attribute *attr, char *buf) | |
7759 | { | |
7760 | struct iwl_priv *priv = (struct iwl_priv *)d->driver_data; | |
7761 | ||
7762 | return sprintf(buf, "0x%04X\n", | |
7763 | le32_to_cpu(priv->active_rxon.filter_flags)); | |
7764 | } | |
7765 | ||
7766 | static ssize_t store_filter_flags(struct device *d, | |
7767 | struct device_attribute *attr, | |
7768 | const char *buf, size_t count) | |
7769 | { | |
7770 | struct iwl_priv *priv = (struct iwl_priv *)d->driver_data; | |
7771 | u32 filter_flags = simple_strtoul(buf, NULL, 0); | |
7772 | ||
7773 | mutex_lock(&priv->mutex); | |
7774 | if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) { | |
7775 | /* Cancel any currently running scans... */ | |
7776 | if (iwl_scan_cancel_timeout(priv, 100)) | |
7777 | IWL_WARNING("Could not cancel scan.\n"); | |
7778 | else { | |
7779 | IWL_DEBUG_INFO("Committing rxon.filter_flags = " | |
7780 | "0x%04X\n", filter_flags); | |
7781 | priv->staging_rxon.filter_flags = | |
7782 | cpu_to_le32(filter_flags); | |
7783 | iwl_commit_rxon(priv); | |
7784 | } | |
7785 | } | |
7786 | mutex_unlock(&priv->mutex); | |
7787 | ||
7788 | return count; | |
7789 | } | |
7790 | ||
7791 | static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags, | |
7792 | store_filter_flags); | |
7793 | ||
7794 | static ssize_t show_tune(struct device *d, | |
7795 | struct device_attribute *attr, char *buf) | |
7796 | { | |
7797 | struct iwl_priv *priv = (struct iwl_priv *)d->driver_data; | |
7798 | ||
7799 | return sprintf(buf, "0x%04X\n", | |
7800 | (priv->phymode << 8) | | |
7801 | le16_to_cpu(priv->active_rxon.channel)); | |
7802 | } | |
7803 | ||
7804 | static void iwl_set_flags_for_phymode(struct iwl_priv *priv, u8 phymode); | |
7805 | ||
7806 | static ssize_t store_tune(struct device *d, | |
7807 | struct device_attribute *attr, | |
7808 | const char *buf, size_t count) | |
7809 | { | |
7810 | struct iwl_priv *priv = (struct iwl_priv *)d->driver_data; | |
7811 | char *p = (char *)buf; | |
7812 | u16 tune = simple_strtoul(p, &p, 0); | |
7813 | u8 phymode = (tune >> 8) & 0xff; | |
7814 | u16 channel = tune & 0xff; | |
7815 | ||
7816 | IWL_DEBUG_INFO("Tune request to:%d channel:%d\n", phymode, channel); | |
7817 | ||
7818 | mutex_lock(&priv->mutex); | |
7819 | if ((le16_to_cpu(priv->staging_rxon.channel) != channel) || | |
7820 | (priv->phymode != phymode)) { | |
7821 | const struct iwl_channel_info *ch_info; | |
7822 | ||
7823 | ch_info = iwl_get_channel_info(priv, phymode, channel); | |
7824 | if (!ch_info) { | |
7825 | IWL_WARNING("Requested invalid phymode/channel " | |
7826 | "combination: %d %d\n", phymode, channel); | |
7827 | mutex_unlock(&priv->mutex); | |
7828 | return -EINVAL; | |
7829 | } | |
7830 | ||
7831 | /* Cancel any currently running scans... */ | |
7832 | if (iwl_scan_cancel_timeout(priv, 100)) | |
7833 | IWL_WARNING("Could not cancel scan.\n"); | |
7834 | else { | |
7835 | IWL_DEBUG_INFO("Committing phymode and " | |
7836 | "rxon.channel = %d %d\n", | |
7837 | phymode, channel); | |
7838 | ||
7839 | iwl_set_rxon_channel(priv, phymode, channel); | |
7840 | iwl_set_flags_for_phymode(priv, phymode); | |
7841 | ||
7842 | iwl_set_rate(priv); | |
7843 | iwl_commit_rxon(priv); | |
7844 | } | |
7845 | } | |
7846 | mutex_unlock(&priv->mutex); | |
7847 | ||
7848 | return count; | |
7849 | } | |
7850 | ||
7851 | static DEVICE_ATTR(tune, S_IWUSR | S_IRUGO, show_tune, store_tune); | |
7852 | ||
7853 | #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT | |
7854 | ||
7855 | static ssize_t show_measurement(struct device *d, | |
7856 | struct device_attribute *attr, char *buf) | |
7857 | { | |
7858 | struct iwl_priv *priv = dev_get_drvdata(d); | |
7859 | struct iwl_spectrum_notification measure_report; | |
7860 | u32 size = sizeof(measure_report), len = 0, ofs = 0; | |
7861 | u8 *data = (u8 *) & measure_report; | |
7862 | unsigned long flags; | |
7863 | ||
7864 | spin_lock_irqsave(&priv->lock, flags); | |
7865 | if (!(priv->measurement_status & MEASUREMENT_READY)) { | |
7866 | spin_unlock_irqrestore(&priv->lock, flags); | |
7867 | return 0; | |
7868 | } | |
7869 | memcpy(&measure_report, &priv->measure_report, size); | |
7870 | priv->measurement_status = 0; | |
7871 | spin_unlock_irqrestore(&priv->lock, flags); | |
7872 | ||
7873 | while (size && (PAGE_SIZE - len)) { | |
7874 | hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len, | |
7875 | PAGE_SIZE - len, 1); | |
7876 | len = strlen(buf); | |
7877 | if (PAGE_SIZE - len) | |
7878 | buf[len++] = '\n'; | |
7879 | ||
7880 | ofs += 16; | |
7881 | size -= min(size, 16U); | |
7882 | } | |
7883 | ||
7884 | return len; | |
7885 | } | |
7886 | ||
7887 | static ssize_t store_measurement(struct device *d, | |
7888 | struct device_attribute *attr, | |
7889 | const char *buf, size_t count) | |
7890 | { | |
7891 | struct iwl_priv *priv = dev_get_drvdata(d); | |
7892 | struct ieee80211_measurement_params params = { | |
7893 | .channel = le16_to_cpu(priv->active_rxon.channel), | |
7894 | .start_time = cpu_to_le64(priv->last_tsf), | |
7895 | .duration = cpu_to_le16(1), | |
7896 | }; | |
7897 | u8 type = IWL_MEASURE_BASIC; | |
7898 | u8 buffer[32]; | |
7899 | u8 channel; | |
7900 | ||
7901 | if (count) { | |
7902 | char *p = buffer; | |
7903 | strncpy(buffer, buf, min(sizeof(buffer), count)); | |
7904 | channel = simple_strtoul(p, NULL, 0); | |
7905 | if (channel) | |
7906 | params.channel = channel; | |
7907 | ||
7908 | p = buffer; | |
7909 | while (*p && *p != ' ') | |
7910 | p++; | |
7911 | if (*p) | |
7912 | type = simple_strtoul(p + 1, NULL, 0); | |
7913 | } | |
7914 | ||
7915 | IWL_DEBUG_INFO("Invoking measurement of type %d on " | |
7916 | "channel %d (for '%s')\n", type, params.channel, buf); | |
7917 | iwl_get_measurement(priv, ¶ms, type); | |
7918 | ||
7919 | return count; | |
7920 | } | |
7921 | ||
7922 | static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR, | |
7923 | show_measurement, store_measurement); | |
7924 | #endif /* CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT */ | |
7925 | ||
7926 | static ssize_t show_rate(struct device *d, | |
7927 | struct device_attribute *attr, char *buf) | |
7928 | { | |
7929 | struct iwl_priv *priv = dev_get_drvdata(d); | |
7930 | unsigned long flags; | |
7931 | int i; | |
7932 | ||
7933 | spin_lock_irqsave(&priv->sta_lock, flags); | |
7934 | if (priv->iw_mode == IEEE80211_IF_TYPE_STA) | |
7935 | i = priv->stations[IWL_AP_ID].current_rate.s.rate; | |
7936 | else | |
7937 | i = priv->stations[IWL_STA_ID].current_rate.s.rate; | |
7938 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
7939 | ||
7940 | i = iwl_rate_index_from_plcp(i); | |
7941 | if (i == -1) | |
7942 | return sprintf(buf, "0\n"); | |
7943 | ||
7944 | return sprintf(buf, "%d%s\n", | |
7945 | (iwl_rates[i].ieee >> 1), | |
7946 | (iwl_rates[i].ieee & 0x1) ? ".5" : ""); | |
7947 | } | |
7948 | ||
7949 | static DEVICE_ATTR(rate, S_IRUSR, show_rate, NULL); | |
7950 | ||
7951 | static ssize_t store_retry_rate(struct device *d, | |
7952 | struct device_attribute *attr, | |
7953 | const char *buf, size_t count) | |
7954 | { | |
7955 | struct iwl_priv *priv = dev_get_drvdata(d); | |
7956 | ||
7957 | priv->retry_rate = simple_strtoul(buf, NULL, 0); | |
7958 | if (priv->retry_rate <= 0) | |
7959 | priv->retry_rate = 1; | |
7960 | ||
7961 | return count; | |
7962 | } | |
7963 | ||
7964 | static ssize_t show_retry_rate(struct device *d, | |
7965 | struct device_attribute *attr, char *buf) | |
7966 | { | |
7967 | struct iwl_priv *priv = dev_get_drvdata(d); | |
7968 | return sprintf(buf, "%d", priv->retry_rate); | |
7969 | } | |
7970 | ||
7971 | static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate, | |
7972 | store_retry_rate); | |
7973 | ||
7974 | static ssize_t store_power_level(struct device *d, | |
7975 | struct device_attribute *attr, | |
7976 | const char *buf, size_t count) | |
7977 | { | |
7978 | struct iwl_priv *priv = dev_get_drvdata(d); | |
7979 | int rc; | |
7980 | int mode; | |
7981 | ||
7982 | mode = simple_strtoul(buf, NULL, 0); | |
7983 | mutex_lock(&priv->mutex); | |
7984 | ||
7985 | if (!iwl_is_ready(priv)) { | |
7986 | rc = -EAGAIN; | |
7987 | goto out; | |
7988 | } | |
7989 | ||
7990 | if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC)) | |
7991 | mode = IWL_POWER_AC; | |
7992 | else | |
7993 | mode |= IWL_POWER_ENABLED; | |
7994 | ||
7995 | if (mode != priv->power_mode) { | |
7996 | rc = iwl_send_power_mode(priv, IWL_POWER_LEVEL(mode)); | |
7997 | if (rc) { | |
7998 | IWL_DEBUG_MAC80211("failed setting power mode.\n"); | |
7999 | goto out; | |
8000 | } | |
8001 | priv->power_mode = mode; | |
8002 | } | |
8003 | ||
8004 | rc = count; | |
8005 | ||
8006 | out: | |
8007 | mutex_unlock(&priv->mutex); | |
8008 | return rc; | |
8009 | } | |
8010 | ||
8011 | #define MAX_WX_STRING 80 | |
8012 | ||
8013 | /* Values are in microsecond */ | |
8014 | static const s32 timeout_duration[] = { | |
8015 | 350000, | |
8016 | 250000, | |
8017 | 75000, | |
8018 | 37000, | |
8019 | 25000, | |
8020 | }; | |
8021 | static const s32 period_duration[] = { | |
8022 | 400000, | |
8023 | 700000, | |
8024 | 1000000, | |
8025 | 1000000, | |
8026 | 1000000 | |
8027 | }; | |
8028 | ||
8029 | static ssize_t show_power_level(struct device *d, | |
8030 | struct device_attribute *attr, char *buf) | |
8031 | { | |
8032 | struct iwl_priv *priv = dev_get_drvdata(d); | |
8033 | int level = IWL_POWER_LEVEL(priv->power_mode); | |
8034 | char *p = buf; | |
8035 | ||
8036 | p += sprintf(p, "%d ", level); | |
8037 | switch (level) { | |
8038 | case IWL_POWER_MODE_CAM: | |
8039 | case IWL_POWER_AC: | |
8040 | p += sprintf(p, "(AC)"); | |
8041 | break; | |
8042 | case IWL_POWER_BATTERY: | |
8043 | p += sprintf(p, "(BATTERY)"); | |
8044 | break; | |
8045 | default: | |
8046 | p += sprintf(p, | |
8047 | "(Timeout %dms, Period %dms)", | |
8048 | timeout_duration[level - 1] / 1000, | |
8049 | period_duration[level - 1] / 1000); | |
8050 | } | |
8051 | ||
8052 | if (!(priv->power_mode & IWL_POWER_ENABLED)) | |
8053 | p += sprintf(p, " OFF\n"); | |
8054 | else | |
8055 | p += sprintf(p, " \n"); | |
8056 | ||
8057 | return (p - buf + 1); | |
8058 | ||
8059 | } | |
8060 | ||
8061 | static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level, | |
8062 | store_power_level); | |
8063 | ||
8064 | static ssize_t show_channels(struct device *d, | |
8065 | struct device_attribute *attr, char *buf) | |
8066 | { | |
8067 | struct iwl_priv *priv = dev_get_drvdata(d); | |
8068 | int len = 0, i; | |
8069 | struct ieee80211_channel *channels = NULL; | |
8070 | const struct ieee80211_hw_mode *hw_mode = NULL; | |
8071 | int count = 0; | |
8072 | ||
8073 | if (!iwl_is_ready(priv)) | |
8074 | return -EAGAIN; | |
8075 | ||
8076 | hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211G); | |
8077 | if (!hw_mode) | |
8078 | hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211B); | |
8079 | if (hw_mode) { | |
8080 | channels = hw_mode->channels; | |
8081 | count = hw_mode->num_channels; | |
8082 | } | |
8083 | ||
8084 | len += | |
8085 | sprintf(&buf[len], | |
8086 | "Displaying %d channels in 2.4GHz band " | |
8087 | "(802.11bg):\n", count); | |
8088 | ||
8089 | for (i = 0; i < count; i++) | |
8090 | len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n", | |
8091 | channels[i].chan, | |
8092 | channels[i].power_level, | |
8093 | channels[i]. | |
8094 | flag & IEEE80211_CHAN_W_RADAR_DETECT ? | |
8095 | " (IEEE 802.11h required)" : "", | |
8096 | (!(channels[i].flag & IEEE80211_CHAN_W_IBSS) | |
8097 | || (channels[i]. | |
8098 | flag & | |
8099 | IEEE80211_CHAN_W_RADAR_DETECT)) ? "" : | |
8100 | ", IBSS", | |
8101 | channels[i]. | |
8102 | flag & IEEE80211_CHAN_W_ACTIVE_SCAN ? | |
8103 | "active/passive" : "passive only"); | |
8104 | ||
8105 | hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211A); | |
8106 | if (hw_mode) { | |
8107 | channels = hw_mode->channels; | |
8108 | count = hw_mode->num_channels; | |
8109 | } else { | |
8110 | channels = NULL; | |
8111 | count = 0; | |
8112 | } | |
8113 | ||
8114 | len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band " | |
8115 | "(802.11a):\n", count); | |
8116 | ||
8117 | for (i = 0; i < count; i++) | |
8118 | len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n", | |
8119 | channels[i].chan, | |
8120 | channels[i].power_level, | |
8121 | channels[i]. | |
8122 | flag & IEEE80211_CHAN_W_RADAR_DETECT ? | |
8123 | " (IEEE 802.11h required)" : "", | |
8124 | (!(channels[i].flag & IEEE80211_CHAN_W_IBSS) | |
8125 | || (channels[i]. | |
8126 | flag & | |
8127 | IEEE80211_CHAN_W_RADAR_DETECT)) ? "" : | |
8128 | ", IBSS", | |
8129 | channels[i]. | |
8130 | flag & IEEE80211_CHAN_W_ACTIVE_SCAN ? | |
8131 | "active/passive" : "passive only"); | |
8132 | ||
8133 | return len; | |
8134 | } | |
8135 | ||
8136 | static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL); | |
8137 | ||
8138 | static ssize_t show_statistics(struct device *d, | |
8139 | struct device_attribute *attr, char *buf) | |
8140 | { | |
8141 | struct iwl_priv *priv = dev_get_drvdata(d); | |
8142 | u32 size = sizeof(struct iwl_notif_statistics); | |
8143 | u32 len = 0, ofs = 0; | |
8144 | u8 *data = (u8 *) & priv->statistics; | |
8145 | int rc = 0; | |
8146 | ||
8147 | if (!iwl_is_alive(priv)) | |
8148 | return -EAGAIN; | |
8149 | ||
8150 | mutex_lock(&priv->mutex); | |
8151 | rc = iwl_send_statistics_request(priv); | |
8152 | mutex_unlock(&priv->mutex); | |
8153 | ||
8154 | if (rc) { | |
8155 | len = sprintf(buf, | |
8156 | "Error sending statistics request: 0x%08X\n", rc); | |
8157 | return len; | |
8158 | } | |
8159 | ||
8160 | while (size && (PAGE_SIZE - len)) { | |
8161 | hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len, | |
8162 | PAGE_SIZE - len, 1); | |
8163 | len = strlen(buf); | |
8164 | if (PAGE_SIZE - len) | |
8165 | buf[len++] = '\n'; | |
8166 | ||
8167 | ofs += 16; | |
8168 | size -= min(size, 16U); | |
8169 | } | |
8170 | ||
8171 | return len; | |
8172 | } | |
8173 | ||
8174 | static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL); | |
8175 | ||
8176 | static ssize_t show_antenna(struct device *d, | |
8177 | struct device_attribute *attr, char *buf) | |
8178 | { | |
8179 | struct iwl_priv *priv = dev_get_drvdata(d); | |
8180 | ||
8181 | if (!iwl_is_alive(priv)) | |
8182 | return -EAGAIN; | |
8183 | ||
8184 | return sprintf(buf, "%d\n", priv->antenna); | |
8185 | } | |
8186 | ||
8187 | static ssize_t store_antenna(struct device *d, | |
8188 | struct device_attribute *attr, | |
8189 | const char *buf, size_t count) | |
8190 | { | |
8191 | int ant; | |
8192 | struct iwl_priv *priv = dev_get_drvdata(d); | |
8193 | ||
8194 | if (count == 0) | |
8195 | return 0; | |
8196 | ||
8197 | if (sscanf(buf, "%1i", &ant) != 1) { | |
8198 | IWL_DEBUG_INFO("not in hex or decimal form.\n"); | |
8199 | return count; | |
8200 | } | |
8201 | ||
8202 | if ((ant >= 0) && (ant <= 2)) { | |
8203 | IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant); | |
8204 | priv->antenna = (enum iwl_antenna)ant; | |
8205 | } else | |
8206 | IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant); | |
8207 | ||
8208 | ||
8209 | return count; | |
8210 | } | |
8211 | ||
8212 | static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna); | |
8213 | ||
8214 | static ssize_t show_status(struct device *d, | |
8215 | struct device_attribute *attr, char *buf) | |
8216 | { | |
8217 | struct iwl_priv *priv = (struct iwl_priv *)d->driver_data; | |
8218 | if (!iwl_is_alive(priv)) | |
8219 | return -EAGAIN; | |
8220 | return sprintf(buf, "0x%08x\n", (int)priv->status); | |
8221 | } | |
8222 | ||
8223 | static DEVICE_ATTR(status, S_IRUGO, show_status, NULL); | |
8224 | ||
8225 | static ssize_t dump_error_log(struct device *d, | |
8226 | struct device_attribute *attr, | |
8227 | const char *buf, size_t count) | |
8228 | { | |
8229 | char *p = (char *)buf; | |
8230 | ||
8231 | if (p[0] == '1') | |
8232 | iwl_dump_nic_error_log((struct iwl_priv *)d->driver_data); | |
8233 | ||
8234 | return strnlen(buf, count); | |
8235 | } | |
8236 | ||
8237 | static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log); | |
8238 | ||
8239 | static ssize_t dump_event_log(struct device *d, | |
8240 | struct device_attribute *attr, | |
8241 | const char *buf, size_t count) | |
8242 | { | |
8243 | char *p = (char *)buf; | |
8244 | ||
8245 | if (p[0] == '1') | |
8246 | iwl_dump_nic_event_log((struct iwl_priv *)d->driver_data); | |
8247 | ||
8248 | return strnlen(buf, count); | |
8249 | } | |
8250 | ||
8251 | static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log); | |
8252 | ||
8253 | /***************************************************************************** | |
8254 | * | |
8255 | * driver setup and teardown | |
8256 | * | |
8257 | *****************************************************************************/ | |
8258 | ||
8259 | static void iwl_setup_deferred_work(struct iwl_priv *priv) | |
8260 | { | |
8261 | priv->workqueue = create_workqueue(DRV_NAME); | |
8262 | ||
8263 | init_waitqueue_head(&priv->wait_command_queue); | |
8264 | ||
8265 | INIT_WORK(&priv->up, iwl_bg_up); | |
8266 | INIT_WORK(&priv->restart, iwl_bg_restart); | |
8267 | INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish); | |
8268 | INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed); | |
8269 | INIT_WORK(&priv->request_scan, iwl_bg_request_scan); | |
8270 | INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan); | |
8271 | INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill); | |
8272 | INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update); | |
8273 | INIT_DELAYED_WORK(&priv->post_associate, iwl_bg_post_associate); | |
8274 | INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start); | |
8275 | INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start); | |
8276 | INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check); | |
8277 | ||
8278 | iwl_hw_setup_deferred_work(priv); | |
8279 | ||
8280 | tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long)) | |
8281 | iwl_irq_tasklet, (unsigned long)priv); | |
8282 | } | |
8283 | ||
8284 | static void iwl_cancel_deferred_work(struct iwl_priv *priv) | |
8285 | { | |
8286 | iwl_hw_cancel_deferred_work(priv); | |
8287 | ||
e47eb6ad | 8288 | cancel_delayed_work_sync(&priv->init_alive_start); |
b481de9c ZY |
8289 | cancel_delayed_work(&priv->scan_check); |
8290 | cancel_delayed_work(&priv->alive_start); | |
8291 | cancel_delayed_work(&priv->post_associate); | |
8292 | cancel_work_sync(&priv->beacon_update); | |
8293 | } | |
8294 | ||
8295 | static struct attribute *iwl_sysfs_entries[] = { | |
8296 | &dev_attr_antenna.attr, | |
8297 | &dev_attr_channels.attr, | |
8298 | &dev_attr_dump_errors.attr, | |
8299 | &dev_attr_dump_events.attr, | |
8300 | &dev_attr_flags.attr, | |
8301 | &dev_attr_filter_flags.attr, | |
8302 | #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT | |
8303 | &dev_attr_measurement.attr, | |
8304 | #endif | |
8305 | &dev_attr_power_level.attr, | |
8306 | &dev_attr_rate.attr, | |
8307 | &dev_attr_retry_rate.attr, | |
8308 | &dev_attr_rf_kill.attr, | |
8309 | &dev_attr_rs_window.attr, | |
8310 | &dev_attr_statistics.attr, | |
8311 | &dev_attr_status.attr, | |
8312 | &dev_attr_temperature.attr, | |
8313 | &dev_attr_tune.attr, | |
8314 | &dev_attr_tx_power.attr, | |
8315 | ||
8316 | NULL | |
8317 | }; | |
8318 | ||
8319 | static struct attribute_group iwl_attribute_group = { | |
8320 | .name = NULL, /* put in device directory */ | |
8321 | .attrs = iwl_sysfs_entries, | |
8322 | }; | |
8323 | ||
8324 | static struct ieee80211_ops iwl_hw_ops = { | |
8325 | .tx = iwl_mac_tx, | |
4150c572 | 8326 | .start = iwl_mac_start, |
b481de9c ZY |
8327 | .stop = iwl_mac_stop, |
8328 | .add_interface = iwl_mac_add_interface, | |
8329 | .remove_interface = iwl_mac_remove_interface, | |
8330 | .config = iwl_mac_config, | |
8331 | .config_interface = iwl_mac_config_interface, | |
4150c572 | 8332 | .configure_filter = iwl_configure_filter, |
b481de9c ZY |
8333 | .set_key = iwl_mac_set_key, |
8334 | .get_stats = iwl_mac_get_stats, | |
8335 | .get_tx_stats = iwl_mac_get_tx_stats, | |
8336 | .conf_tx = iwl_mac_conf_tx, | |
8337 | .get_tsf = iwl_mac_get_tsf, | |
8338 | .reset_tsf = iwl_mac_reset_tsf, | |
8339 | .beacon_update = iwl_mac_beacon_update, | |
8340 | .hw_scan = iwl_mac_hw_scan | |
8341 | }; | |
8342 | ||
8343 | static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) | |
8344 | { | |
8345 | int err = 0; | |
8346 | u32 pci_id; | |
8347 | struct iwl_priv *priv; | |
8348 | struct ieee80211_hw *hw; | |
8349 | int i; | |
8350 | ||
8351 | if (iwl_param_disable_hw_scan) { | |
8352 | IWL_DEBUG_INFO("Disabling hw_scan\n"); | |
8353 | iwl_hw_ops.hw_scan = NULL; | |
8354 | } | |
8355 | ||
8356 | if ((iwl_param_queues_num > IWL_MAX_NUM_QUEUES) || | |
8357 | (iwl_param_queues_num < IWL_MIN_NUM_QUEUES)) { | |
8358 | IWL_ERROR("invalid queues_num, should be between %d and %d\n", | |
8359 | IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES); | |
8360 | err = -EINVAL; | |
8361 | goto out; | |
8362 | } | |
8363 | ||
8364 | /* mac80211 allocates memory for this device instance, including | |
8365 | * space for this driver's private structure */ | |
8366 | hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwl_hw_ops); | |
8367 | if (hw == NULL) { | |
8368 | IWL_ERROR("Can not allocate network device\n"); | |
8369 | err = -ENOMEM; | |
8370 | goto out; | |
8371 | } | |
8372 | SET_IEEE80211_DEV(hw, &pdev->dev); | |
8373 | ||
f51359a8 JB |
8374 | hw->rate_control_algorithm = "iwl-3945-rs"; |
8375 | ||
b481de9c ZY |
8376 | IWL_DEBUG_INFO("*** LOAD DRIVER ***\n"); |
8377 | priv = hw->priv; | |
8378 | priv->hw = hw; | |
8379 | ||
8380 | priv->pci_dev = pdev; | |
8381 | priv->antenna = (enum iwl_antenna)iwl_param_antenna; | |
8382 | #ifdef CONFIG_IWLWIFI_DEBUG | |
8383 | iwl_debug_level = iwl_param_debug; | |
8384 | atomic_set(&priv->restrict_refcnt, 0); | |
8385 | #endif | |
8386 | priv->retry_rate = 1; | |
8387 | ||
8388 | priv->ibss_beacon = NULL; | |
8389 | ||
8390 | /* Tell mac80211 and its clients (e.g. Wireless Extensions) | |
8391 | * the range of signal quality values that we'll provide. | |
8392 | * Negative values for level/noise indicate that we'll provide dBm. | |
8393 | * For WE, at least, non-0 values here *enable* display of values | |
8394 | * in app (iwconfig). */ | |
8395 | hw->max_rssi = -20; /* signal level, negative indicates dBm */ | |
8396 | hw->max_noise = -20; /* noise level, negative indicates dBm */ | |
8397 | hw->max_signal = 100; /* link quality indication (%) */ | |
8398 | ||
8399 | /* Tell mac80211 our Tx characteristics */ | |
8400 | hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE; | |
8401 | ||
8402 | hw->queues = 4; | |
8403 | ||
8404 | spin_lock_init(&priv->lock); | |
8405 | spin_lock_init(&priv->power_data.lock); | |
8406 | spin_lock_init(&priv->sta_lock); | |
8407 | spin_lock_init(&priv->hcmd_lock); | |
8408 | ||
8409 | for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) | |
8410 | INIT_LIST_HEAD(&priv->ibss_mac_hash[i]); | |
8411 | ||
8412 | INIT_LIST_HEAD(&priv->free_frames); | |
8413 | ||
8414 | mutex_init(&priv->mutex); | |
8415 | if (pci_enable_device(pdev)) { | |
8416 | err = -ENODEV; | |
8417 | goto out_ieee80211_free_hw; | |
8418 | } | |
8419 | ||
8420 | pci_set_master(pdev); | |
8421 | ||
8422 | iwl_clear_stations_table(priv); | |
8423 | ||
8424 | priv->data_retry_limit = -1; | |
8425 | priv->ieee_channels = NULL; | |
8426 | priv->ieee_rates = NULL; | |
8427 | priv->phymode = -1; | |
8428 | ||
8429 | err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); | |
8430 | if (!err) | |
8431 | err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); | |
8432 | if (err) { | |
8433 | printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n"); | |
8434 | goto out_pci_disable_device; | |
8435 | } | |
8436 | ||
8437 | pci_set_drvdata(pdev, priv); | |
8438 | err = pci_request_regions(pdev, DRV_NAME); | |
8439 | if (err) | |
8440 | goto out_pci_disable_device; | |
8441 | /* We disable the RETRY_TIMEOUT register (0x41) to keep | |
8442 | * PCI Tx retries from interfering with C3 CPU state */ | |
8443 | pci_write_config_byte(pdev, 0x41, 0x00); | |
8444 | priv->hw_base = pci_iomap(pdev, 0, 0); | |
8445 | if (!priv->hw_base) { | |
8446 | err = -ENODEV; | |
8447 | goto out_pci_release_regions; | |
8448 | } | |
8449 | ||
8450 | IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n", | |
8451 | (unsigned long long) pci_resource_len(pdev, 0)); | |
8452 | IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base); | |
8453 | ||
8454 | /* Initialize module parameter values here */ | |
8455 | ||
8456 | if (iwl_param_disable) { | |
8457 | set_bit(STATUS_RF_KILL_SW, &priv->status); | |
8458 | IWL_DEBUG_INFO("Radio disabled.\n"); | |
8459 | } | |
8460 | ||
8461 | priv->iw_mode = IEEE80211_IF_TYPE_STA; | |
8462 | ||
8463 | pci_id = | |
8464 | (priv->pci_dev->device << 16) | priv->pci_dev->subsystem_device; | |
8465 | ||
8466 | switch (pci_id) { | |
8467 | case 0x42221005: /* 0x4222 0x8086 0x1005 is BG SKU */ | |
8468 | case 0x42221034: /* 0x4222 0x8086 0x1034 is BG SKU */ | |
8469 | case 0x42271014: /* 0x4227 0x8086 0x1014 is BG SKU */ | |
8470 | case 0x42221044: /* 0x4222 0x8086 0x1044 is BG SKU */ | |
8471 | priv->is_abg = 0; | |
8472 | break; | |
8473 | ||
8474 | /* | |
8475 | * Rest are assumed ABG SKU -- if this is not the | |
8476 | * case then the card will get the wrong 'Detected' | |
8477 | * line in the kernel log however the code that | |
8478 | * initializes the GEO table will detect no A-band | |
8479 | * channels and remove the is_abg mask. | |
8480 | */ | |
8481 | default: | |
8482 | priv->is_abg = 1; | |
8483 | break; | |
8484 | } | |
8485 | ||
8486 | printk(KERN_INFO DRV_NAME | |
8487 | ": Detected Intel PRO/Wireless 3945%sBG Network Connection\n", | |
8488 | priv->is_abg ? "A" : ""); | |
8489 | ||
8490 | /* Device-specific setup */ | |
8491 | if (iwl_hw_set_hw_setting(priv)) { | |
8492 | IWL_ERROR("failed to set hw settings\n"); | |
8493 | mutex_unlock(&priv->mutex); | |
8494 | goto out_iounmap; | |
8495 | } | |
8496 | ||
8497 | #ifdef CONFIG_IWLWIFI_QOS | |
8498 | if (iwl_param_qos_enable) | |
8499 | priv->qos_data.qos_enable = 1; | |
8500 | ||
8501 | iwl_reset_qos(priv); | |
8502 | ||
8503 | priv->qos_data.qos_active = 0; | |
8504 | priv->qos_data.qos_cap.val = 0; | |
8505 | #endif /* CONFIG_IWLWIFI_QOS */ | |
8506 | ||
8507 | iwl_set_rxon_channel(priv, MODE_IEEE80211G, 6); | |
8508 | iwl_setup_deferred_work(priv); | |
8509 | iwl_setup_rx_handlers(priv); | |
8510 | ||
8511 | priv->rates_mask = IWL_RATES_MASK; | |
8512 | /* If power management is turned on, default to AC mode */ | |
8513 | priv->power_mode = IWL_POWER_AC; | |
8514 | priv->user_txpower_limit = IWL_DEFAULT_TX_POWER; | |
8515 | ||
8516 | pci_enable_msi(pdev); | |
8517 | ||
8518 | err = request_irq(pdev->irq, iwl_isr, IRQF_SHARED, DRV_NAME, priv); | |
8519 | if (err) { | |
8520 | IWL_ERROR("Error allocating IRQ %d\n", pdev->irq); | |
8521 | goto out_disable_msi; | |
8522 | } | |
8523 | ||
8524 | mutex_lock(&priv->mutex); | |
8525 | ||
8526 | err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group); | |
8527 | if (err) { | |
8528 | IWL_ERROR("failed to create sysfs device attributes\n"); | |
8529 | mutex_unlock(&priv->mutex); | |
8530 | goto out_release_irq; | |
8531 | } | |
8532 | ||
8533 | /* fetch ucode file from disk, alloc and copy to bus-master buffers ... | |
8534 | * ucode filename and max sizes are card-specific. */ | |
8535 | err = iwl_read_ucode(priv); | |
8536 | if (err) { | |
8537 | IWL_ERROR("Could not read microcode: %d\n", err); | |
8538 | mutex_unlock(&priv->mutex); | |
8539 | goto out_pci_alloc; | |
8540 | } | |
8541 | ||
8542 | mutex_unlock(&priv->mutex); | |
8543 | ||
01ebd063 | 8544 | IWL_DEBUG_INFO("Queueing UP work.\n"); |
b481de9c ZY |
8545 | |
8546 | queue_work(priv->workqueue, &priv->up); | |
8547 | ||
8548 | return 0; | |
8549 | ||
8550 | out_pci_alloc: | |
8551 | iwl_dealloc_ucode_pci(priv); | |
8552 | ||
8553 | sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group); | |
8554 | ||
8555 | out_release_irq: | |
8556 | free_irq(pdev->irq, priv); | |
8557 | ||
8558 | out_disable_msi: | |
8559 | pci_disable_msi(pdev); | |
8560 | destroy_workqueue(priv->workqueue); | |
8561 | priv->workqueue = NULL; | |
8562 | iwl_unset_hw_setting(priv); | |
8563 | ||
8564 | out_iounmap: | |
8565 | pci_iounmap(pdev, priv->hw_base); | |
8566 | out_pci_release_regions: | |
8567 | pci_release_regions(pdev); | |
8568 | out_pci_disable_device: | |
8569 | pci_disable_device(pdev); | |
8570 | pci_set_drvdata(pdev, NULL); | |
8571 | out_ieee80211_free_hw: | |
8572 | ieee80211_free_hw(priv->hw); | |
8573 | out: | |
8574 | return err; | |
8575 | } | |
8576 | ||
8577 | static void iwl_pci_remove(struct pci_dev *pdev) | |
8578 | { | |
8579 | struct iwl_priv *priv = pci_get_drvdata(pdev); | |
8580 | struct list_head *p, *q; | |
8581 | int i; | |
8582 | ||
8583 | if (!priv) | |
8584 | return; | |
8585 | ||
8586 | IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n"); | |
8587 | ||
b481de9c | 8588 | set_bit(STATUS_EXIT_PENDING, &priv->status); |
b24d22b1 ZY |
8589 | |
8590 | iwl_down(priv); | |
b481de9c ZY |
8591 | |
8592 | /* Free MAC hash list for ADHOC */ | |
8593 | for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) { | |
8594 | list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) { | |
8595 | list_del(p); | |
8596 | kfree(list_entry(p, struct iwl_ibss_seq, list)); | |
8597 | } | |
8598 | } | |
8599 | ||
8600 | sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group); | |
8601 | ||
8602 | iwl_dealloc_ucode_pci(priv); | |
8603 | ||
8604 | if (priv->rxq.bd) | |
8605 | iwl_rx_queue_free(priv, &priv->rxq); | |
8606 | iwl_hw_txq_ctx_free(priv); | |
8607 | ||
8608 | iwl_unset_hw_setting(priv); | |
8609 | iwl_clear_stations_table(priv); | |
8610 | ||
8611 | if (priv->mac80211_registered) { | |
8612 | ieee80211_unregister_hw(priv->hw); | |
8613 | iwl_rate_control_unregister(priv->hw); | |
8614 | } | |
8615 | ||
6ef89d0a MA |
8616 | /*netif_stop_queue(dev); */ |
8617 | flush_workqueue(priv->workqueue); | |
8618 | ||
b481de9c ZY |
8619 | /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes |
8620 | * priv->workqueue... so we can't take down the workqueue | |
8621 | * until now... */ | |
8622 | destroy_workqueue(priv->workqueue); | |
8623 | priv->workqueue = NULL; | |
8624 | ||
8625 | free_irq(pdev->irq, priv); | |
8626 | pci_disable_msi(pdev); | |
8627 | pci_iounmap(pdev, priv->hw_base); | |
8628 | pci_release_regions(pdev); | |
8629 | pci_disable_device(pdev); | |
8630 | pci_set_drvdata(pdev, NULL); | |
8631 | ||
8632 | kfree(priv->channel_info); | |
8633 | ||
8634 | kfree(priv->ieee_channels); | |
8635 | kfree(priv->ieee_rates); | |
8636 | ||
8637 | if (priv->ibss_beacon) | |
8638 | dev_kfree_skb(priv->ibss_beacon); | |
8639 | ||
8640 | ieee80211_free_hw(priv->hw); | |
8641 | } | |
8642 | ||
8643 | #ifdef CONFIG_PM | |
8644 | ||
8645 | static int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state) | |
8646 | { | |
8647 | struct iwl_priv *priv = pci_get_drvdata(pdev); | |
8648 | ||
b481de9c ZY |
8649 | set_bit(STATUS_IN_SUSPEND, &priv->status); |
8650 | ||
8651 | /* Take down the device; powers it off, etc. */ | |
b24d22b1 | 8652 | iwl_down(priv); |
b481de9c ZY |
8653 | |
8654 | if (priv->mac80211_registered) | |
8655 | ieee80211_stop_queues(priv->hw); | |
8656 | ||
8657 | pci_save_state(pdev); | |
8658 | pci_disable_device(pdev); | |
8659 | pci_set_power_state(pdev, PCI_D3hot); | |
8660 | ||
b481de9c ZY |
8661 | return 0; |
8662 | } | |
8663 | ||
8664 | static void iwl_resume(struct iwl_priv *priv) | |
8665 | { | |
8666 | unsigned long flags; | |
8667 | ||
8668 | /* The following it a temporary work around due to the | |
8669 | * suspend / resume not fully initializing the NIC correctly. | |
8670 | * Without all of the following, resume will not attempt to take | |
8671 | * down the NIC (it shouldn't really need to) and will just try | |
8672 | * and bring the NIC back up. However that fails during the | |
8673 | * ucode verification process. This then causes iwl_down to be | |
8674 | * called *after* iwl_hw_nic_init() has succeeded -- which | |
8675 | * then lets the next init sequence succeed. So, we've | |
8676 | * replicated all of that NIC init code here... */ | |
8677 | ||
8678 | iwl_write32(priv, CSR_INT, 0xFFFFFFFF); | |
8679 | ||
8680 | iwl_hw_nic_init(priv); | |
8681 | ||
8682 | iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); | |
8683 | iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, | |
8684 | CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); | |
8685 | iwl_write32(priv, CSR_INT, 0xFFFFFFFF); | |
8686 | iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); | |
8687 | iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); | |
8688 | ||
8689 | /* tell the device to stop sending interrupts */ | |
8690 | iwl_disable_interrupts(priv); | |
8691 | ||
8692 | spin_lock_irqsave(&priv->lock, flags); | |
8693 | iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); | |
8694 | ||
8695 | if (!iwl_grab_restricted_access(priv)) { | |
8696 | iwl_write_restricted_reg(priv, APMG_CLK_DIS_REG, | |
8697 | APMG_CLK_VAL_DMA_CLK_RQT); | |
8698 | iwl_release_restricted_access(priv); | |
8699 | } | |
8700 | spin_unlock_irqrestore(&priv->lock, flags); | |
8701 | ||
8702 | udelay(5); | |
8703 | ||
8704 | iwl_hw_nic_reset(priv); | |
8705 | ||
8706 | /* Bring the device back up */ | |
8707 | clear_bit(STATUS_IN_SUSPEND, &priv->status); | |
8708 | queue_work(priv->workqueue, &priv->up); | |
8709 | } | |
8710 | ||
8711 | static int iwl_pci_resume(struct pci_dev *pdev) | |
8712 | { | |
8713 | struct iwl_priv *priv = pci_get_drvdata(pdev); | |
8714 | int err; | |
8715 | ||
8716 | printk(KERN_INFO "Coming out of suspend...\n"); | |
8717 | ||
b481de9c ZY |
8718 | pci_set_power_state(pdev, PCI_D0); |
8719 | err = pci_enable_device(pdev); | |
8720 | pci_restore_state(pdev); | |
8721 | ||
8722 | /* | |
8723 | * Suspend/Resume resets the PCI configuration space, so we have to | |
8724 | * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries | |
8725 | * from interfering with C3 CPU state. pci_restore_state won't help | |
8726 | * here since it only restores the first 64 bytes pci config header. | |
8727 | */ | |
8728 | pci_write_config_byte(pdev, 0x41, 0x00); | |
8729 | ||
8730 | iwl_resume(priv); | |
b481de9c ZY |
8731 | |
8732 | return 0; | |
8733 | } | |
8734 | ||
8735 | #endif /* CONFIG_PM */ | |
8736 | ||
8737 | /***************************************************************************** | |
8738 | * | |
8739 | * driver and module entry point | |
8740 | * | |
8741 | *****************************************************************************/ | |
8742 | ||
8743 | static struct pci_driver iwl_driver = { | |
8744 | .name = DRV_NAME, | |
8745 | .id_table = iwl_hw_card_ids, | |
8746 | .probe = iwl_pci_probe, | |
8747 | .remove = __devexit_p(iwl_pci_remove), | |
8748 | #ifdef CONFIG_PM | |
8749 | .suspend = iwl_pci_suspend, | |
8750 | .resume = iwl_pci_resume, | |
8751 | #endif | |
8752 | }; | |
8753 | ||
8754 | static int __init iwl_init(void) | |
8755 | { | |
8756 | ||
8757 | int ret; | |
8758 | printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n"); | |
8759 | printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n"); | |
8760 | ret = pci_register_driver(&iwl_driver); | |
8761 | if (ret) { | |
8762 | IWL_ERROR("Unable to initialize PCI module\n"); | |
8763 | return ret; | |
8764 | } | |
8765 | #ifdef CONFIG_IWLWIFI_DEBUG | |
8766 | ret = driver_create_file(&iwl_driver.driver, &driver_attr_debug_level); | |
8767 | if (ret) { | |
8768 | IWL_ERROR("Unable to create driver sysfs file\n"); | |
8769 | pci_unregister_driver(&iwl_driver); | |
8770 | return ret; | |
8771 | } | |
8772 | #endif | |
8773 | ||
8774 | return ret; | |
8775 | } | |
8776 | ||
8777 | static void __exit iwl_exit(void) | |
8778 | { | |
8779 | #ifdef CONFIG_IWLWIFI_DEBUG | |
8780 | driver_remove_file(&iwl_driver.driver, &driver_attr_debug_level); | |
8781 | #endif | |
8782 | pci_unregister_driver(&iwl_driver); | |
8783 | } | |
8784 | ||
8785 | module_param_named(antenna, iwl_param_antenna, int, 0444); | |
8786 | MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])"); | |
8787 | module_param_named(disable, iwl_param_disable, int, 0444); | |
8788 | MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])"); | |
8789 | module_param_named(hwcrypto, iwl_param_hwcrypto, int, 0444); | |
8790 | MODULE_PARM_DESC(hwcrypto, | |
8791 | "using hardware crypto engine (default 0 [software])\n"); | |
8792 | module_param_named(debug, iwl_param_debug, int, 0444); | |
8793 | MODULE_PARM_DESC(debug, "debug output mask"); | |
8794 | module_param_named(disable_hw_scan, iwl_param_disable_hw_scan, int, 0444); | |
8795 | MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)"); | |
8796 | ||
8797 | module_param_named(queues_num, iwl_param_queues_num, int, 0444); | |
8798 | MODULE_PARM_DESC(queues_num, "number of hw queues."); | |
8799 | ||
8800 | /* QoS */ | |
8801 | module_param_named(qos_enable, iwl_param_qos_enable, int, 0444); | |
8802 | MODULE_PARM_DESC(qos_enable, "enable all QoS functionality"); | |
8803 | ||
8804 | module_exit(iwl_exit); | |
8805 | module_init(iwl_init); |