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b481de9c ZY |
1 | /****************************************************************************** |
2 | * | |
eb7ae89c | 3 | * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved. |
b481de9c ZY |
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 | ||
b481de9c ZY |
30 | #include <linux/kernel.h> |
31 | #include <linux/module.h> | |
32 | #include <linux/version.h> | |
33 | #include <linux/init.h> | |
34 | #include <linux/pci.h> | |
35 | #include <linux/dma-mapping.h> | |
36 | #include <linux/delay.h> | |
37 | #include <linux/skbuff.h> | |
38 | #include <linux/netdevice.h> | |
39 | #include <linux/wireless.h> | |
40 | #include <linux/firmware.h> | |
b481de9c ZY |
41 | #include <linux/etherdevice.h> |
42 | #include <linux/if_arp.h> | |
43 | ||
b481de9c ZY |
44 | #include <net/mac80211.h> |
45 | ||
46 | #include <asm/div64.h> | |
47 | ||
6bc913bd | 48 | #include "iwl-eeprom.h" |
b481de9c | 49 | #include "iwl-4965.h" |
fee1247a | 50 | #include "iwl-core.h" |
3395f6e9 | 51 | #include "iwl-io.h" |
b481de9c | 52 | #include "iwl-helpers.h" |
6974e363 | 53 | #include "iwl-sta.h" |
f0832f13 | 54 | #include "iwl-calib.h" |
b481de9c | 55 | |
c79dd5b5 | 56 | static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv, |
bb8c093b | 57 | struct iwl4965_tx_queue *txq); |
416e1438 | 58 | |
b481de9c ZY |
59 | /****************************************************************************** |
60 | * | |
61 | * module boiler plate | |
62 | * | |
63 | ******************************************************************************/ | |
64 | ||
b481de9c ZY |
65 | /* |
66 | * module name, copyright, version, etc. | |
67 | * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk | |
68 | */ | |
69 | ||
70 | #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux" | |
71 | ||
0a6857e7 | 72 | #ifdef CONFIG_IWLWIFI_DEBUG |
b481de9c ZY |
73 | #define VD "d" |
74 | #else | |
75 | #define VD | |
76 | #endif | |
77 | ||
c8b0e6e1 | 78 | #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT |
b481de9c ZY |
79 | #define VS "s" |
80 | #else | |
81 | #define VS | |
82 | #endif | |
83 | ||
df48c323 | 84 | #define DRV_VERSION IWLWIFI_VERSION VD VS |
b481de9c | 85 | |
b481de9c ZY |
86 | |
87 | MODULE_DESCRIPTION(DRV_DESCRIPTION); | |
88 | MODULE_VERSION(DRV_VERSION); | |
89 | MODULE_AUTHOR(DRV_COPYRIGHT); | |
90 | MODULE_LICENSE("GPL"); | |
91 | ||
92 | __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr) | |
93 | { | |
94 | u16 fc = le16_to_cpu(hdr->frame_control); | |
95 | int hdr_len = ieee80211_get_hdrlen(fc); | |
96 | ||
97 | if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA)) | |
98 | return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN); | |
99 | return NULL; | |
100 | } | |
101 | ||
d1141dfb | 102 | static const struct ieee80211_supported_band *iwl_get_hw_mode( |
c79dd5b5 | 103 | struct iwl_priv *priv, enum ieee80211_band band) |
b481de9c | 104 | { |
8318d78a | 105 | return priv->hw->wiphy->bands[band]; |
b481de9c ZY |
106 | } |
107 | ||
bb8c093b | 108 | static int iwl4965_is_empty_essid(const char *essid, int essid_len) |
b481de9c ZY |
109 | { |
110 | /* Single white space is for Linksys APs */ | |
111 | if (essid_len == 1 && essid[0] == ' ') | |
112 | return 1; | |
113 | ||
114 | /* Otherwise, if the entire essid is 0, we assume it is hidden */ | |
115 | while (essid_len) { | |
116 | essid_len--; | |
117 | if (essid[essid_len] != '\0') | |
118 | return 0; | |
119 | } | |
120 | ||
121 | return 1; | |
122 | } | |
123 | ||
bb8c093b | 124 | static const char *iwl4965_escape_essid(const char *essid, u8 essid_len) |
b481de9c ZY |
125 | { |
126 | static char escaped[IW_ESSID_MAX_SIZE * 2 + 1]; | |
127 | const char *s = essid; | |
128 | char *d = escaped; | |
129 | ||
bb8c093b | 130 | if (iwl4965_is_empty_essid(essid, essid_len)) { |
b481de9c ZY |
131 | memcpy(escaped, "<hidden>", sizeof("<hidden>")); |
132 | return escaped; | |
133 | } | |
134 | ||
135 | essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE); | |
136 | while (essid_len--) { | |
137 | if (*s == '\0') { | |
138 | *d++ = '\\'; | |
139 | *d++ = '0'; | |
140 | s++; | |
141 | } else | |
142 | *d++ = *s++; | |
143 | } | |
144 | *d = '\0'; | |
145 | return escaped; | |
146 | } | |
147 | ||
b481de9c ZY |
148 | /*************** DMA-QUEUE-GENERAL-FUNCTIONS ***** |
149 | * DMA services | |
150 | * | |
151 | * Theory of operation | |
152 | * | |
6440adb5 BC |
153 | * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer |
154 | * of buffer descriptors, each of which points to one or more data buffers for | |
155 | * the device to read from or fill. Driver and device exchange status of each | |
156 | * queue via "read" and "write" pointers. Driver keeps minimum of 2 empty | |
157 | * entries in each circular buffer, to protect against confusing empty and full | |
158 | * queue states. | |
159 | * | |
160 | * The device reads or writes the data in the queues via the device's several | |
161 | * DMA/FIFO channels. Each queue is mapped to a single DMA channel. | |
b481de9c ZY |
162 | * |
163 | * For Tx queue, there are low mark and high mark limits. If, after queuing | |
164 | * the packet for Tx, free space become < low mark, Tx queue stopped. When | |
165 | * reclaiming packets (on 'tx done IRQ), if free space become > high mark, | |
166 | * Tx queue resumed. | |
167 | * | |
6440adb5 BC |
168 | * The 4965 operates with up to 17 queues: One receive queue, one transmit |
169 | * queue (#4) for sending commands to the device firmware, and 15 other | |
170 | * Tx queues that may be mapped to prioritized Tx DMA/FIFO channels. | |
e3851447 BC |
171 | * |
172 | * See more detailed info in iwl-4965-hw.h. | |
b481de9c ZY |
173 | ***************************************************/ |
174 | ||
fe01b477 | 175 | int iwl4965_queue_space(const struct iwl4965_queue *q) |
b481de9c | 176 | { |
fc4b6853 | 177 | int s = q->read_ptr - q->write_ptr; |
b481de9c | 178 | |
fc4b6853 | 179 | if (q->read_ptr > q->write_ptr) |
b481de9c ZY |
180 | s -= q->n_bd; |
181 | ||
182 | if (s <= 0) | |
183 | s += q->n_window; | |
184 | /* keep some reserve to not confuse empty and full situations */ | |
185 | s -= 2; | |
186 | if (s < 0) | |
187 | s = 0; | |
188 | return s; | |
189 | } | |
190 | ||
b481de9c | 191 | |
bb8c093b | 192 | static inline int x2_queue_used(const struct iwl4965_queue *q, int i) |
b481de9c | 193 | { |
fc4b6853 TW |
194 | return q->write_ptr > q->read_ptr ? |
195 | (i >= q->read_ptr && i < q->write_ptr) : | |
196 | !(i < q->read_ptr && i >= q->write_ptr); | |
b481de9c ZY |
197 | } |
198 | ||
bb8c093b | 199 | static inline u8 get_cmd_index(struct iwl4965_queue *q, u32 index, int is_huge) |
b481de9c | 200 | { |
6440adb5 | 201 | /* This is for scan command, the big buffer at end of command array */ |
b481de9c | 202 | if (is_huge) |
6440adb5 | 203 | return q->n_window; /* must be power of 2 */ |
b481de9c | 204 | |
6440adb5 | 205 | /* Otherwise, use normal size buffers */ |
b481de9c ZY |
206 | return index & (q->n_window - 1); |
207 | } | |
208 | ||
6440adb5 BC |
209 | /** |
210 | * iwl4965_queue_init - Initialize queue's high/low-water and read/write indexes | |
211 | */ | |
c79dd5b5 | 212 | static int iwl4965_queue_init(struct iwl_priv *priv, struct iwl4965_queue *q, |
b481de9c ZY |
213 | int count, int slots_num, u32 id) |
214 | { | |
215 | q->n_bd = count; | |
216 | q->n_window = slots_num; | |
217 | q->id = id; | |
218 | ||
c54b679d TW |
219 | /* count must be power-of-two size, otherwise iwl_queue_inc_wrap |
220 | * and iwl_queue_dec_wrap are broken. */ | |
b481de9c ZY |
221 | BUG_ON(!is_power_of_2(count)); |
222 | ||
223 | /* slots_num must be power-of-two size, otherwise | |
224 | * get_cmd_index is broken. */ | |
225 | BUG_ON(!is_power_of_2(slots_num)); | |
226 | ||
227 | q->low_mark = q->n_window / 4; | |
228 | if (q->low_mark < 4) | |
229 | q->low_mark = 4; | |
230 | ||
231 | q->high_mark = q->n_window / 8; | |
232 | if (q->high_mark < 2) | |
233 | q->high_mark = 2; | |
234 | ||
fc4b6853 | 235 | q->write_ptr = q->read_ptr = 0; |
b481de9c ZY |
236 | |
237 | return 0; | |
238 | } | |
239 | ||
6440adb5 BC |
240 | /** |
241 | * iwl4965_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue | |
242 | */ | |
c79dd5b5 | 243 | static int iwl4965_tx_queue_alloc(struct iwl_priv *priv, |
bb8c093b | 244 | struct iwl4965_tx_queue *txq, u32 id) |
b481de9c ZY |
245 | { |
246 | struct pci_dev *dev = priv->pci_dev; | |
247 | ||
6440adb5 BC |
248 | /* Driver private data, only for Tx (not command) queues, |
249 | * not shared with device. */ | |
b481de9c ZY |
250 | if (id != IWL_CMD_QUEUE_NUM) { |
251 | txq->txb = kmalloc(sizeof(txq->txb[0]) * | |
252 | TFD_QUEUE_SIZE_MAX, GFP_KERNEL); | |
253 | if (!txq->txb) { | |
01ebd063 | 254 | IWL_ERROR("kmalloc for auxiliary BD " |
b481de9c ZY |
255 | "structures failed\n"); |
256 | goto error; | |
257 | } | |
258 | } else | |
259 | txq->txb = NULL; | |
260 | ||
6440adb5 BC |
261 | /* Circular buffer of transmit frame descriptors (TFDs), |
262 | * shared with device */ | |
b481de9c ZY |
263 | txq->bd = pci_alloc_consistent(dev, |
264 | sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX, | |
265 | &txq->q.dma_addr); | |
266 | ||
267 | if (!txq->bd) { | |
268 | IWL_ERROR("pci_alloc_consistent(%zd) failed\n", | |
269 | sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX); | |
270 | goto error; | |
271 | } | |
272 | txq->q.id = id; | |
273 | ||
274 | return 0; | |
275 | ||
276 | error: | |
277 | if (txq->txb) { | |
278 | kfree(txq->txb); | |
279 | txq->txb = NULL; | |
280 | } | |
281 | ||
282 | return -ENOMEM; | |
283 | } | |
284 | ||
8b6eaea8 BC |
285 | /** |
286 | * iwl4965_tx_queue_init - Allocate and initialize one tx/cmd queue | |
287 | */ | |
c79dd5b5 | 288 | int iwl4965_tx_queue_init(struct iwl_priv *priv, |
bb8c093b | 289 | struct iwl4965_tx_queue *txq, int slots_num, u32 txq_id) |
b481de9c ZY |
290 | { |
291 | struct pci_dev *dev = priv->pci_dev; | |
292 | int len; | |
293 | int rc = 0; | |
294 | ||
8b6eaea8 BC |
295 | /* |
296 | * Alloc buffer array for commands (Tx or other types of commands). | |
297 | * For the command queue (#4), allocate command space + one big | |
298 | * command for scan, since scan command is very huge; the system will | |
299 | * not have two scans at the same time, so only one is needed. | |
bb54244b | 300 | * For normal Tx queues (all other queues), no super-size command |
8b6eaea8 BC |
301 | * space is needed. |
302 | */ | |
857485c0 | 303 | len = sizeof(struct iwl_cmd) * slots_num; |
b481de9c ZY |
304 | if (txq_id == IWL_CMD_QUEUE_NUM) |
305 | len += IWL_MAX_SCAN_SIZE; | |
306 | txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd); | |
307 | if (!txq->cmd) | |
308 | return -ENOMEM; | |
309 | ||
8b6eaea8 | 310 | /* Alloc driver data array and TFD circular buffer */ |
bb8c093b | 311 | rc = iwl4965_tx_queue_alloc(priv, txq, txq_id); |
b481de9c ZY |
312 | if (rc) { |
313 | pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd); | |
314 | ||
315 | return -ENOMEM; | |
316 | } | |
317 | txq->need_update = 0; | |
318 | ||
319 | /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise | |
c54b679d | 320 | * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */ |
b481de9c | 321 | BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1)); |
8b6eaea8 BC |
322 | |
323 | /* Initialize queue's high/low-water marks, and head/tail indexes */ | |
bb8c093b | 324 | iwl4965_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id); |
b481de9c | 325 | |
8b6eaea8 | 326 | /* Tell device where to find queue */ |
bb8c093b | 327 | iwl4965_hw_tx_queue_init(priv, txq); |
b481de9c ZY |
328 | |
329 | return 0; | |
330 | } | |
331 | ||
332 | /** | |
bb8c093b | 333 | * iwl4965_tx_queue_free - Deallocate DMA queue. |
b481de9c ZY |
334 | * @txq: Transmit queue to deallocate. |
335 | * | |
336 | * Empty queue by removing and destroying all BD's. | |
6440adb5 BC |
337 | * Free all buffers. |
338 | * 0-fill, but do not free "txq" descriptor structure. | |
b481de9c | 339 | */ |
c79dd5b5 | 340 | void iwl4965_tx_queue_free(struct iwl_priv *priv, struct iwl4965_tx_queue *txq) |
b481de9c | 341 | { |
bb8c093b | 342 | struct iwl4965_queue *q = &txq->q; |
b481de9c ZY |
343 | struct pci_dev *dev = priv->pci_dev; |
344 | int len; | |
345 | ||
346 | if (q->n_bd == 0) | |
347 | return; | |
348 | ||
349 | /* first, empty all BD's */ | |
fc4b6853 | 350 | for (; q->write_ptr != q->read_ptr; |
c54b679d | 351 | q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) |
bb8c093b | 352 | iwl4965_hw_txq_free_tfd(priv, txq); |
b481de9c | 353 | |
857485c0 | 354 | len = sizeof(struct iwl_cmd) * q->n_window; |
b481de9c ZY |
355 | if (q->id == IWL_CMD_QUEUE_NUM) |
356 | len += IWL_MAX_SCAN_SIZE; | |
357 | ||
6440adb5 | 358 | /* De-alloc array of command/tx buffers */ |
b481de9c ZY |
359 | pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd); |
360 | ||
6440adb5 | 361 | /* De-alloc circular buffer of TFDs */ |
b481de9c | 362 | if (txq->q.n_bd) |
bb8c093b | 363 | pci_free_consistent(dev, sizeof(struct iwl4965_tfd_frame) * |
b481de9c ZY |
364 | txq->q.n_bd, txq->bd, txq->q.dma_addr); |
365 | ||
6440adb5 | 366 | /* De-alloc array of per-TFD driver data */ |
b481de9c ZY |
367 | if (txq->txb) { |
368 | kfree(txq->txb); | |
369 | txq->txb = NULL; | |
370 | } | |
371 | ||
6440adb5 | 372 | /* 0-fill queue descriptor structure */ |
b481de9c ZY |
373 | memset(txq, 0, sizeof(*txq)); |
374 | } | |
375 | ||
bb8c093b | 376 | const u8 iwl4965_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; |
b481de9c ZY |
377 | |
378 | /*************** STATION TABLE MANAGEMENT **** | |
9fbab516 | 379 | * mac80211 should be examined to determine if sta_info is duplicating |
b481de9c ZY |
380 | * the functionality provided here |
381 | */ | |
382 | ||
383 | /**************************************************************/ | |
384 | ||
01ebd063 | 385 | #if 0 /* temporary disable till we add real remove station */ |
6440adb5 BC |
386 | /** |
387 | * iwl4965_remove_station - Remove driver's knowledge of station. | |
388 | * | |
389 | * NOTE: This does not remove station from device's station table. | |
390 | */ | |
c79dd5b5 | 391 | static u8 iwl4965_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap) |
b481de9c ZY |
392 | { |
393 | int index = IWL_INVALID_STATION; | |
394 | int i; | |
395 | unsigned long flags; | |
396 | ||
397 | spin_lock_irqsave(&priv->sta_lock, flags); | |
398 | ||
399 | if (is_ap) | |
400 | index = IWL_AP_ID; | |
401 | else if (is_broadcast_ether_addr(addr)) | |
5425e490 | 402 | index = priv->hw_params.bcast_sta_id; |
b481de9c | 403 | else |
5425e490 | 404 | for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) |
b481de9c ZY |
405 | if (priv->stations[i].used && |
406 | !compare_ether_addr(priv->stations[i].sta.sta.addr, | |
407 | addr)) { | |
408 | index = i; | |
409 | break; | |
410 | } | |
411 | ||
412 | if (unlikely(index == IWL_INVALID_STATION)) | |
413 | goto out; | |
414 | ||
415 | if (priv->stations[index].used) { | |
416 | priv->stations[index].used = 0; | |
417 | priv->num_stations--; | |
418 | } | |
419 | ||
420 | BUG_ON(priv->num_stations < 0); | |
421 | ||
422 | out: | |
423 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
424 | return 0; | |
425 | } | |
556f8db7 | 426 | #endif |
b481de9c | 427 | |
6440adb5 BC |
428 | /** |
429 | * iwl4965_add_station_flags - Add station to tables in driver and device | |
430 | */ | |
c79dd5b5 | 431 | u8 iwl4965_add_station_flags(struct iwl_priv *priv, const u8 *addr, |
67d62035 | 432 | int is_ap, u8 flags, void *ht_data) |
b481de9c ZY |
433 | { |
434 | int i; | |
435 | int index = IWL_INVALID_STATION; | |
bb8c093b | 436 | struct iwl4965_station_entry *station; |
b481de9c | 437 | unsigned long flags_spin; |
0795af57 | 438 | DECLARE_MAC_BUF(mac); |
b481de9c ZY |
439 | |
440 | spin_lock_irqsave(&priv->sta_lock, flags_spin); | |
441 | if (is_ap) | |
442 | index = IWL_AP_ID; | |
443 | else if (is_broadcast_ether_addr(addr)) | |
5425e490 | 444 | index = priv->hw_params.bcast_sta_id; |
b481de9c | 445 | else |
5425e490 | 446 | for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) { |
b481de9c ZY |
447 | if (!compare_ether_addr(priv->stations[i].sta.sta.addr, |
448 | addr)) { | |
449 | index = i; | |
450 | break; | |
451 | } | |
452 | ||
453 | if (!priv->stations[i].used && | |
454 | index == IWL_INVALID_STATION) | |
455 | index = i; | |
456 | } | |
457 | ||
458 | ||
9fbab516 BC |
459 | /* These two conditions have the same outcome, but keep them separate |
460 | since they have different meanings */ | |
b481de9c ZY |
461 | if (unlikely(index == IWL_INVALID_STATION)) { |
462 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); | |
463 | return index; | |
464 | } | |
465 | ||
466 | if (priv->stations[index].used && | |
467 | !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) { | |
468 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); | |
469 | return index; | |
470 | } | |
471 | ||
472 | ||
0795af57 | 473 | IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr)); |
b481de9c ZY |
474 | station = &priv->stations[index]; |
475 | station->used = 1; | |
476 | priv->num_stations++; | |
477 | ||
6440adb5 | 478 | /* Set up the REPLY_ADD_STA command to send to device */ |
bb8c093b | 479 | memset(&station->sta, 0, sizeof(struct iwl4965_addsta_cmd)); |
b481de9c ZY |
480 | memcpy(station->sta.sta.addr, addr, ETH_ALEN); |
481 | station->sta.mode = 0; | |
482 | station->sta.sta.sta_id = index; | |
483 | station->sta.station_flags = 0; | |
484 | ||
c8b0e6e1 | 485 | #ifdef CONFIG_IWL4965_HT |
b481de9c | 486 | /* BCAST station and IBSS stations do not work in HT mode */ |
5425e490 | 487 | if (index != priv->hw_params.bcast_sta_id && |
b481de9c | 488 | priv->iw_mode != IEEE80211_IF_TYPE_IBSS) |
67d62035 RR |
489 | iwl4965_set_ht_add_station(priv, index, |
490 | (struct ieee80211_ht_info *) ht_data); | |
c8b0e6e1 | 491 | #endif /*CONFIG_IWL4965_HT*/ |
b481de9c ZY |
492 | |
493 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); | |
6440adb5 BC |
494 | |
495 | /* Add station to device's station table */ | |
bb8c093b | 496 | iwl4965_send_add_station(priv, &station->sta, flags); |
b481de9c ZY |
497 | return index; |
498 | ||
499 | } | |
500 | ||
b481de9c | 501 | |
b481de9c ZY |
502 | |
503 | /*************** HOST COMMAND QUEUE FUNCTIONS *****/ | |
504 | ||
b481de9c | 505 | /** |
bb8c093b | 506 | * iwl4965_enqueue_hcmd - enqueue a uCode command |
b481de9c ZY |
507 | * @priv: device private data point |
508 | * @cmd: a point to the ucode command structure | |
509 | * | |
510 | * The function returns < 0 values to indicate the operation is | |
511 | * failed. On success, it turns the index (> 0) of command in the | |
512 | * command queue. | |
513 | */ | |
857485c0 | 514 | int iwl4965_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd) |
b481de9c | 515 | { |
bb8c093b CH |
516 | struct iwl4965_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM]; |
517 | struct iwl4965_queue *q = &txq->q; | |
518 | struct iwl4965_tfd_frame *tfd; | |
b481de9c | 519 | u32 *control_flags; |
857485c0 | 520 | struct iwl_cmd *out_cmd; |
b481de9c ZY |
521 | u32 idx; |
522 | u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr)); | |
523 | dma_addr_t phys_addr; | |
524 | int ret; | |
525 | unsigned long flags; | |
526 | ||
527 | /* If any of the command structures end up being larger than | |
528 | * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then | |
529 | * we will need to increase the size of the TFD entries */ | |
530 | BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) && | |
531 | !(cmd->meta.flags & CMD_SIZE_HUGE)); | |
532 | ||
fee1247a | 533 | if (iwl_is_rfkill(priv)) { |
c342a1b9 GG |
534 | IWL_DEBUG_INFO("Not sending command - RF KILL"); |
535 | return -EIO; | |
536 | } | |
537 | ||
bb8c093b | 538 | if (iwl4965_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) { |
b481de9c ZY |
539 | IWL_ERROR("No space for Tx\n"); |
540 | return -ENOSPC; | |
541 | } | |
542 | ||
543 | spin_lock_irqsave(&priv->hcmd_lock, flags); | |
544 | ||
fc4b6853 | 545 | tfd = &txq->bd[q->write_ptr]; |
b481de9c ZY |
546 | memset(tfd, 0, sizeof(*tfd)); |
547 | ||
548 | control_flags = (u32 *) tfd; | |
549 | ||
fc4b6853 | 550 | idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE); |
b481de9c ZY |
551 | out_cmd = &txq->cmd[idx]; |
552 | ||
553 | out_cmd->hdr.cmd = cmd->id; | |
554 | memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta)); | |
555 | memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len); | |
556 | ||
557 | /* At this point, the out_cmd now has all of the incoming cmd | |
558 | * information */ | |
559 | ||
560 | out_cmd->hdr.flags = 0; | |
561 | out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) | | |
fc4b6853 | 562 | INDEX_TO_SEQ(q->write_ptr)); |
b481de9c ZY |
563 | if (out_cmd->meta.flags & CMD_SIZE_HUGE) |
564 | out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME); | |
565 | ||
566 | phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx + | |
857485c0 | 567 | offsetof(struct iwl_cmd, hdr); |
bb8c093b | 568 | iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size); |
b481de9c ZY |
569 | |
570 | IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, " | |
571 | "%d bytes at %d[%d]:%d\n", | |
572 | get_cmd_string(out_cmd->hdr.cmd), | |
573 | out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence), | |
fc4b6853 | 574 | fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM); |
b481de9c ZY |
575 | |
576 | txq->need_update = 1; | |
6440adb5 BC |
577 | |
578 | /* Set up entry in queue's byte count circular buffer */ | |
e2a722eb | 579 | priv->cfg->ops->lib->txq_update_byte_cnt_tbl(priv, txq, 0); |
6440adb5 BC |
580 | |
581 | /* Increment and update queue's write index */ | |
c54b679d | 582 | q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd); |
e2a722eb | 583 | ret = iwl4965_tx_queue_update_write_ptr(priv, txq); |
b481de9c ZY |
584 | |
585 | spin_unlock_irqrestore(&priv->hcmd_lock, flags); | |
586 | return ret ? ret : idx; | |
587 | } | |
588 | ||
deb09c43 EG |
589 | static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt) |
590 | { | |
591 | struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon; | |
592 | ||
593 | if (hw_decrypt) | |
594 | rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK; | |
595 | else | |
596 | rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK; | |
597 | ||
598 | } | |
599 | ||
b481de9c | 600 | /** |
bb8c093b | 601 | * iwl4965_rxon_add_station - add station into station table. |
b481de9c ZY |
602 | * |
603 | * there is only one AP station with id= IWL_AP_ID | |
9fbab516 BC |
604 | * NOTE: mutex must be held before calling this fnction |
605 | */ | |
c79dd5b5 | 606 | static int iwl4965_rxon_add_station(struct iwl_priv *priv, |
b481de9c ZY |
607 | const u8 *addr, int is_ap) |
608 | { | |
556f8db7 | 609 | u8 sta_id; |
b481de9c | 610 | |
6440adb5 | 611 | /* Add station to device's station table */ |
67d62035 RR |
612 | #ifdef CONFIG_IWL4965_HT |
613 | struct ieee80211_conf *conf = &priv->hw->conf; | |
614 | struct ieee80211_ht_info *cur_ht_config = &conf->ht_conf; | |
615 | ||
616 | if ((is_ap) && | |
617 | (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) && | |
618 | (priv->iw_mode == IEEE80211_IF_TYPE_STA)) | |
619 | sta_id = iwl4965_add_station_flags(priv, addr, is_ap, | |
620 | 0, cur_ht_config); | |
621 | else | |
622 | #endif /* CONFIG_IWL4965_HT */ | |
623 | sta_id = iwl4965_add_station_flags(priv, addr, is_ap, | |
624 | 0, NULL); | |
6440adb5 BC |
625 | |
626 | /* Set up default rate scaling table in device's station table */ | |
b481de9c ZY |
627 | iwl4965_add_station(priv, addr, is_ap); |
628 | ||
556f8db7 | 629 | return sta_id; |
b481de9c ZY |
630 | } |
631 | ||
b481de9c | 632 | /** |
bb8c093b | 633 | * iwl4965_check_rxon_cmd - validate RXON structure is valid |
b481de9c ZY |
634 | * |
635 | * NOTE: This is really only useful during development and can eventually | |
636 | * be #ifdef'd out once the driver is stable and folks aren't actively | |
637 | * making changes | |
638 | */ | |
bb8c093b | 639 | static int iwl4965_check_rxon_cmd(struct iwl4965_rxon_cmd *rxon) |
b481de9c ZY |
640 | { |
641 | int error = 0; | |
642 | int counter = 1; | |
643 | ||
644 | if (rxon->flags & RXON_FLG_BAND_24G_MSK) { | |
645 | error |= le32_to_cpu(rxon->flags & | |
646 | (RXON_FLG_TGJ_NARROW_BAND_MSK | | |
647 | RXON_FLG_RADAR_DETECT_MSK)); | |
648 | if (error) | |
649 | IWL_WARNING("check 24G fields %d | %d\n", | |
650 | counter++, error); | |
651 | } else { | |
652 | error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ? | |
653 | 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK); | |
654 | if (error) | |
655 | IWL_WARNING("check 52 fields %d | %d\n", | |
656 | counter++, error); | |
657 | error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK); | |
658 | if (error) | |
659 | IWL_WARNING("check 52 CCK %d | %d\n", | |
660 | counter++, error); | |
661 | } | |
662 | error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1; | |
663 | if (error) | |
664 | IWL_WARNING("check mac addr %d | %d\n", counter++, error); | |
665 | ||
666 | /* make sure basic rates 6Mbps and 1Mbps are supported */ | |
667 | error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) && | |
668 | ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0)); | |
669 | if (error) | |
670 | IWL_WARNING("check basic rate %d | %d\n", counter++, error); | |
671 | ||
672 | error |= (le16_to_cpu(rxon->assoc_id) > 2007); | |
673 | if (error) | |
674 | IWL_WARNING("check assoc id %d | %d\n", counter++, error); | |
675 | ||
676 | error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) | |
677 | == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)); | |
678 | if (error) | |
679 | IWL_WARNING("check CCK and short slot %d | %d\n", | |
680 | counter++, error); | |
681 | ||
682 | error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) | |
683 | == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)); | |
684 | if (error) | |
685 | IWL_WARNING("check CCK & auto detect %d | %d\n", | |
686 | counter++, error); | |
687 | ||
688 | error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK | | |
689 | RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK); | |
690 | if (error) | |
691 | IWL_WARNING("check TGG and auto detect %d | %d\n", | |
692 | counter++, error); | |
693 | ||
694 | if (error) | |
695 | IWL_WARNING("Tuning to channel %d\n", | |
696 | le16_to_cpu(rxon->channel)); | |
697 | ||
698 | if (error) { | |
bb8c093b | 699 | IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n"); |
b481de9c ZY |
700 | return -1; |
701 | } | |
702 | return 0; | |
703 | } | |
704 | ||
705 | /** | |
9fbab516 | 706 | * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed |
01ebd063 | 707 | * @priv: staging_rxon is compared to active_rxon |
b481de9c | 708 | * |
9fbab516 BC |
709 | * If the RXON structure is changing enough to require a new tune, |
710 | * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that | |
711 | * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required. | |
b481de9c | 712 | */ |
c79dd5b5 | 713 | static int iwl4965_full_rxon_required(struct iwl_priv *priv) |
b481de9c ZY |
714 | { |
715 | ||
716 | /* These items are only settable from the full RXON command */ | |
717 | if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) || | |
718 | compare_ether_addr(priv->staging_rxon.bssid_addr, | |
719 | priv->active_rxon.bssid_addr) || | |
720 | compare_ether_addr(priv->staging_rxon.node_addr, | |
721 | priv->active_rxon.node_addr) || | |
722 | compare_ether_addr(priv->staging_rxon.wlap_bssid_addr, | |
723 | priv->active_rxon.wlap_bssid_addr) || | |
724 | (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) || | |
725 | (priv->staging_rxon.channel != priv->active_rxon.channel) || | |
726 | (priv->staging_rxon.air_propagation != | |
727 | priv->active_rxon.air_propagation) || | |
728 | (priv->staging_rxon.ofdm_ht_single_stream_basic_rates != | |
729 | priv->active_rxon.ofdm_ht_single_stream_basic_rates) || | |
730 | (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates != | |
731 | priv->active_rxon.ofdm_ht_dual_stream_basic_rates) || | |
732 | (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) || | |
733 | (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id)) | |
734 | return 1; | |
735 | ||
736 | /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can | |
737 | * be updated with the RXON_ASSOC command -- however only some | |
738 | * flag transitions are allowed using RXON_ASSOC */ | |
739 | ||
740 | /* Check if we are not switching bands */ | |
741 | if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) != | |
742 | (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)) | |
743 | return 1; | |
744 | ||
745 | /* Check if we are switching association toggle */ | |
746 | if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) != | |
747 | (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) | |
748 | return 1; | |
749 | ||
750 | return 0; | |
751 | } | |
752 | ||
b481de9c | 753 | /** |
bb8c093b | 754 | * iwl4965_commit_rxon - commit staging_rxon to hardware |
b481de9c | 755 | * |
01ebd063 | 756 | * The RXON command in staging_rxon is committed to the hardware and |
b481de9c ZY |
757 | * the active_rxon structure is updated with the new data. This |
758 | * function correctly transitions out of the RXON_ASSOC_MSK state if | |
759 | * a HW tune is required based on the RXON structure changes. | |
760 | */ | |
c79dd5b5 | 761 | static int iwl4965_commit_rxon(struct iwl_priv *priv) |
b481de9c ZY |
762 | { |
763 | /* cast away the const for active_rxon in this function */ | |
bb8c093b | 764 | struct iwl4965_rxon_cmd *active_rxon = (void *)&priv->active_rxon; |
0795af57 | 765 | DECLARE_MAC_BUF(mac); |
b481de9c ZY |
766 | int rc = 0; |
767 | ||
fee1247a | 768 | if (!iwl_is_alive(priv)) |
b481de9c ZY |
769 | return -1; |
770 | ||
771 | /* always get timestamp with Rx frame */ | |
772 | priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK; | |
773 | ||
bb8c093b | 774 | rc = iwl4965_check_rxon_cmd(&priv->staging_rxon); |
b481de9c ZY |
775 | if (rc) { |
776 | IWL_ERROR("Invalid RXON configuration. Not committing.\n"); | |
777 | return -EINVAL; | |
778 | } | |
779 | ||
780 | /* If we don't need to send a full RXON, we can use | |
bb8c093b | 781 | * iwl4965_rxon_assoc_cmd which is used to reconfigure filter |
b481de9c | 782 | * and other flags for the current radio configuration. */ |
bb8c093b | 783 | if (!iwl4965_full_rxon_required(priv)) { |
7e8c519e | 784 | rc = iwl_send_rxon_assoc(priv); |
b481de9c ZY |
785 | if (rc) { |
786 | IWL_ERROR("Error setting RXON_ASSOC " | |
787 | "configuration (%d).\n", rc); | |
788 | return rc; | |
789 | } | |
790 | ||
791 | memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon)); | |
792 | ||
793 | return 0; | |
794 | } | |
795 | ||
796 | /* station table will be cleared */ | |
797 | priv->assoc_station_added = 0; | |
798 | ||
b481de9c ZY |
799 | /* If we are currently associated and the new config requires |
800 | * an RXON_ASSOC and the new config wants the associated mask enabled, | |
801 | * we must clear the associated from the active configuration | |
802 | * before we apply the new config */ | |
3109ece1 | 803 | if (iwl_is_associated(priv) && |
b481de9c ZY |
804 | (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) { |
805 | IWL_DEBUG_INFO("Toggling associated bit on current RXON\n"); | |
806 | active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK; | |
807 | ||
857485c0 | 808 | rc = iwl_send_cmd_pdu(priv, REPLY_RXON, |
bb8c093b | 809 | sizeof(struct iwl4965_rxon_cmd), |
b481de9c ZY |
810 | &priv->active_rxon); |
811 | ||
812 | /* If the mask clearing failed then we set | |
813 | * active_rxon back to what it was previously */ | |
814 | if (rc) { | |
815 | active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK; | |
816 | IWL_ERROR("Error clearing ASSOC_MSK on current " | |
817 | "configuration (%d).\n", rc); | |
818 | return rc; | |
819 | } | |
b481de9c ZY |
820 | } |
821 | ||
822 | IWL_DEBUG_INFO("Sending RXON\n" | |
823 | "* with%s RXON_FILTER_ASSOC_MSK\n" | |
824 | "* channel = %d\n" | |
0795af57 | 825 | "* bssid = %s\n", |
b481de9c ZY |
826 | ((priv->staging_rxon.filter_flags & |
827 | RXON_FILTER_ASSOC_MSK) ? "" : "out"), | |
828 | le16_to_cpu(priv->staging_rxon.channel), | |
0795af57 | 829 | print_mac(mac, priv->staging_rxon.bssid_addr)); |
b481de9c | 830 | |
099b40b7 | 831 | iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto); |
b481de9c | 832 | /* Apply the new configuration */ |
857485c0 | 833 | rc = iwl_send_cmd_pdu(priv, REPLY_RXON, |
bb8c093b | 834 | sizeof(struct iwl4965_rxon_cmd), &priv->staging_rxon); |
b481de9c ZY |
835 | if (rc) { |
836 | IWL_ERROR("Error setting new configuration (%d).\n", rc); | |
837 | return rc; | |
838 | } | |
839 | ||
bf85ea4f | 840 | iwlcore_clear_stations_table(priv); |
556f8db7 | 841 | |
b481de9c ZY |
842 | if (!priv->error_recovering) |
843 | priv->start_calib = 0; | |
844 | ||
f0832f13 | 845 | iwl_init_sensitivity(priv); |
b481de9c ZY |
846 | |
847 | memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon)); | |
848 | ||
849 | /* If we issue a new RXON command which required a tune then we must | |
850 | * send a new TXPOWER command or we won't be able to Tx any frames */ | |
bb8c093b | 851 | rc = iwl4965_hw_reg_send_txpower(priv); |
b481de9c ZY |
852 | if (rc) { |
853 | IWL_ERROR("Error setting Tx power (%d).\n", rc); | |
854 | return rc; | |
855 | } | |
856 | ||
857 | /* Add the broadcast address so we can send broadcast frames */ | |
bb8c093b | 858 | if (iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0) == |
b481de9c ZY |
859 | IWL_INVALID_STATION) { |
860 | IWL_ERROR("Error adding BROADCAST address for transmit.\n"); | |
861 | return -EIO; | |
862 | } | |
863 | ||
864 | /* If we have set the ASSOC_MSK and we are in BSS mode then | |
865 | * add the IWL_AP_ID to the station rate table */ | |
3109ece1 | 866 | if (iwl_is_associated(priv) && |
b481de9c | 867 | (priv->iw_mode == IEEE80211_IF_TYPE_STA)) { |
bb8c093b | 868 | if (iwl4965_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1) |
b481de9c ZY |
869 | == IWL_INVALID_STATION) { |
870 | IWL_ERROR("Error adding AP address for transmit.\n"); | |
871 | return -EIO; | |
872 | } | |
873 | priv->assoc_station_added = 1; | |
6974e363 EG |
874 | if (priv->default_wep_key && |
875 | iwl_send_static_wepkey_cmd(priv, 0)) | |
876 | IWL_ERROR("Could not send WEP static key.\n"); | |
b481de9c ZY |
877 | } |
878 | ||
879 | return 0; | |
880 | } | |
881 | ||
5da4b55f MA |
882 | void iwl4965_update_chain_flags(struct iwl_priv *priv) |
883 | { | |
884 | ||
885 | iwl4965_set_rxon_chain(priv); | |
886 | iwl4965_commit_rxon(priv); | |
887 | } | |
888 | ||
c79dd5b5 | 889 | static int iwl4965_send_bt_config(struct iwl_priv *priv) |
b481de9c | 890 | { |
bb8c093b | 891 | struct iwl4965_bt_cmd bt_cmd = { |
b481de9c ZY |
892 | .flags = 3, |
893 | .lead_time = 0xAA, | |
894 | .max_kill = 1, | |
895 | .kill_ack_mask = 0, | |
896 | .kill_cts_mask = 0, | |
897 | }; | |
898 | ||
857485c0 | 899 | return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG, |
bb8c093b | 900 | sizeof(struct iwl4965_bt_cmd), &bt_cmd); |
b481de9c ZY |
901 | } |
902 | ||
c79dd5b5 | 903 | static int iwl4965_send_scan_abort(struct iwl_priv *priv) |
b481de9c ZY |
904 | { |
905 | int rc = 0; | |
bb8c093b | 906 | struct iwl4965_rx_packet *res; |
857485c0 | 907 | struct iwl_host_cmd cmd = { |
b481de9c ZY |
908 | .id = REPLY_SCAN_ABORT_CMD, |
909 | .meta.flags = CMD_WANT_SKB, | |
910 | }; | |
911 | ||
912 | /* If there isn't a scan actively going on in the hardware | |
913 | * then we are in between scan bands and not actually | |
914 | * actively scanning, so don't send the abort command */ | |
915 | if (!test_bit(STATUS_SCAN_HW, &priv->status)) { | |
916 | clear_bit(STATUS_SCAN_ABORTING, &priv->status); | |
917 | return 0; | |
918 | } | |
919 | ||
857485c0 | 920 | rc = iwl_send_cmd_sync(priv, &cmd); |
b481de9c ZY |
921 | if (rc) { |
922 | clear_bit(STATUS_SCAN_ABORTING, &priv->status); | |
923 | return rc; | |
924 | } | |
925 | ||
bb8c093b | 926 | res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data; |
b481de9c ZY |
927 | if (res->u.status != CAN_ABORT_STATUS) { |
928 | /* The scan abort will return 1 for success or | |
929 | * 2 for "failure". A failure condition can be | |
930 | * due to simply not being in an active scan which | |
931 | * can occur if we send the scan abort before we | |
932 | * the microcode has notified us that a scan is | |
933 | * completed. */ | |
934 | IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status); | |
935 | clear_bit(STATUS_SCAN_ABORTING, &priv->status); | |
936 | clear_bit(STATUS_SCAN_HW, &priv->status); | |
937 | } | |
938 | ||
939 | dev_kfree_skb_any(cmd.meta.u.skb); | |
940 | ||
941 | return rc; | |
942 | } | |
943 | ||
b481de9c ZY |
944 | /* |
945 | * CARD_STATE_CMD | |
946 | * | |
9fbab516 | 947 | * Use: Sets the device's internal card state to enable, disable, or halt |
b481de9c ZY |
948 | * |
949 | * When in the 'enable' state the card operates as normal. | |
950 | * When in the 'disable' state, the card enters into a low power mode. | |
951 | * When in the 'halt' state, the card is shut down and must be fully | |
952 | * restarted to come back on. | |
953 | */ | |
c79dd5b5 | 954 | static int iwl4965_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag) |
b481de9c | 955 | { |
857485c0 | 956 | struct iwl_host_cmd cmd = { |
b481de9c ZY |
957 | .id = REPLY_CARD_STATE_CMD, |
958 | .len = sizeof(u32), | |
959 | .data = &flags, | |
960 | .meta.flags = meta_flag, | |
961 | }; | |
962 | ||
857485c0 | 963 | return iwl_send_cmd(priv, &cmd); |
b481de9c ZY |
964 | } |
965 | ||
c79dd5b5 | 966 | int iwl4965_send_add_station(struct iwl_priv *priv, |
bb8c093b | 967 | struct iwl4965_addsta_cmd *sta, u8 flags) |
b481de9c | 968 | { |
bb8c093b | 969 | struct iwl4965_rx_packet *res = NULL; |
b481de9c | 970 | int rc = 0; |
857485c0 | 971 | struct iwl_host_cmd cmd = { |
b481de9c | 972 | .id = REPLY_ADD_STA, |
bb8c093b | 973 | .len = sizeof(struct iwl4965_addsta_cmd), |
b481de9c ZY |
974 | .meta.flags = flags, |
975 | .data = sta, | |
976 | }; | |
977 | ||
9e5b806c | 978 | if (!(flags & CMD_ASYNC)) |
b481de9c ZY |
979 | cmd.meta.flags |= CMD_WANT_SKB; |
980 | ||
857485c0 | 981 | rc = iwl_send_cmd(priv, &cmd); |
b481de9c ZY |
982 | |
983 | if (rc || (flags & CMD_ASYNC)) | |
984 | return rc; | |
985 | ||
bb8c093b | 986 | res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data; |
b481de9c ZY |
987 | if (res->hdr.flags & IWL_CMD_FAILED_MSK) { |
988 | IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n", | |
989 | res->hdr.flags); | |
990 | rc = -EIO; | |
991 | } | |
992 | ||
993 | if (rc == 0) { | |
994 | switch (res->u.add_sta.status) { | |
995 | case ADD_STA_SUCCESS_MSK: | |
996 | IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n"); | |
997 | break; | |
998 | default: | |
999 | rc = -EIO; | |
1000 | IWL_WARNING("REPLY_ADD_STA failed\n"); | |
1001 | break; | |
1002 | } | |
1003 | } | |
1004 | ||
1005 | priv->alloc_rxb_skb--; | |
1006 | dev_kfree_skb_any(cmd.meta.u.skb); | |
1007 | ||
1008 | return rc; | |
1009 | } | |
1010 | ||
c79dd5b5 | 1011 | static void iwl4965_clear_free_frames(struct iwl_priv *priv) |
b481de9c ZY |
1012 | { |
1013 | struct list_head *element; | |
1014 | ||
1015 | IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n", | |
1016 | priv->frames_count); | |
1017 | ||
1018 | while (!list_empty(&priv->free_frames)) { | |
1019 | element = priv->free_frames.next; | |
1020 | list_del(element); | |
bb8c093b | 1021 | kfree(list_entry(element, struct iwl4965_frame, list)); |
b481de9c ZY |
1022 | priv->frames_count--; |
1023 | } | |
1024 | ||
1025 | if (priv->frames_count) { | |
1026 | IWL_WARNING("%d frames still in use. Did we lose one?\n", | |
1027 | priv->frames_count); | |
1028 | priv->frames_count = 0; | |
1029 | } | |
1030 | } | |
1031 | ||
c79dd5b5 | 1032 | static struct iwl4965_frame *iwl4965_get_free_frame(struct iwl_priv *priv) |
b481de9c | 1033 | { |
bb8c093b | 1034 | struct iwl4965_frame *frame; |
b481de9c ZY |
1035 | struct list_head *element; |
1036 | if (list_empty(&priv->free_frames)) { | |
1037 | frame = kzalloc(sizeof(*frame), GFP_KERNEL); | |
1038 | if (!frame) { | |
1039 | IWL_ERROR("Could not allocate frame!\n"); | |
1040 | return NULL; | |
1041 | } | |
1042 | ||
1043 | priv->frames_count++; | |
1044 | return frame; | |
1045 | } | |
1046 | ||
1047 | element = priv->free_frames.next; | |
1048 | list_del(element); | |
bb8c093b | 1049 | return list_entry(element, struct iwl4965_frame, list); |
b481de9c ZY |
1050 | } |
1051 | ||
c79dd5b5 | 1052 | static void iwl4965_free_frame(struct iwl_priv *priv, struct iwl4965_frame *frame) |
b481de9c ZY |
1053 | { |
1054 | memset(frame, 0, sizeof(*frame)); | |
1055 | list_add(&frame->list, &priv->free_frames); | |
1056 | } | |
1057 | ||
c79dd5b5 | 1058 | unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv, |
b481de9c ZY |
1059 | struct ieee80211_hdr *hdr, |
1060 | const u8 *dest, int left) | |
1061 | { | |
1062 | ||
3109ece1 | 1063 | if (!iwl_is_associated(priv) || !priv->ibss_beacon || |
b481de9c ZY |
1064 | ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) && |
1065 | (priv->iw_mode != IEEE80211_IF_TYPE_AP))) | |
1066 | return 0; | |
1067 | ||
1068 | if (priv->ibss_beacon->len > left) | |
1069 | return 0; | |
1070 | ||
1071 | memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len); | |
1072 | ||
1073 | return priv->ibss_beacon->len; | |
1074 | } | |
1075 | ||
bb8c093b | 1076 | static u8 iwl4965_rate_get_lowest_plcp(int rate_mask) |
b481de9c ZY |
1077 | { |
1078 | u8 i; | |
1079 | ||
1080 | for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID; | |
bb8c093b | 1081 | i = iwl4965_rates[i].next_ieee) { |
b481de9c | 1082 | if (rate_mask & (1 << i)) |
bb8c093b | 1083 | return iwl4965_rates[i].plcp; |
b481de9c ZY |
1084 | } |
1085 | ||
1086 | return IWL_RATE_INVALID; | |
1087 | } | |
1088 | ||
c79dd5b5 | 1089 | static int iwl4965_send_beacon_cmd(struct iwl_priv *priv) |
b481de9c | 1090 | { |
bb8c093b | 1091 | struct iwl4965_frame *frame; |
b481de9c ZY |
1092 | unsigned int frame_size; |
1093 | int rc; | |
1094 | u8 rate; | |
1095 | ||
bb8c093b | 1096 | frame = iwl4965_get_free_frame(priv); |
b481de9c ZY |
1097 | |
1098 | if (!frame) { | |
1099 | IWL_ERROR("Could not obtain free frame buffer for beacon " | |
1100 | "command.\n"); | |
1101 | return -ENOMEM; | |
1102 | } | |
1103 | ||
1104 | if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) { | |
bb8c093b | 1105 | rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic & |
b481de9c ZY |
1106 | 0xFF0); |
1107 | if (rate == IWL_INVALID_RATE) | |
1108 | rate = IWL_RATE_6M_PLCP; | |
1109 | } else { | |
bb8c093b | 1110 | rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic & 0xF); |
b481de9c ZY |
1111 | if (rate == IWL_INVALID_RATE) |
1112 | rate = IWL_RATE_1M_PLCP; | |
1113 | } | |
1114 | ||
bb8c093b | 1115 | frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate); |
b481de9c | 1116 | |
857485c0 | 1117 | rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size, |
b481de9c ZY |
1118 | &frame->u.cmd[0]); |
1119 | ||
bb8c093b | 1120 | iwl4965_free_frame(priv, frame); |
b481de9c ZY |
1121 | |
1122 | return rc; | |
1123 | } | |
1124 | ||
b481de9c ZY |
1125 | /****************************************************************************** |
1126 | * | |
1127 | * Misc. internal state and helper functions | |
1128 | * | |
1129 | ******************************************************************************/ | |
b481de9c | 1130 | |
b481de9c | 1131 | /** |
bb8c093b | 1132 | * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field |
b481de9c ZY |
1133 | * |
1134 | * return : set the bit for each supported rate insert in ie | |
1135 | */ | |
bb8c093b | 1136 | static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate, |
c7c46676 | 1137 | u16 basic_rate, int *left) |
b481de9c ZY |
1138 | { |
1139 | u16 ret_rates = 0, bit; | |
1140 | int i; | |
c7c46676 TW |
1141 | u8 *cnt = ie; |
1142 | u8 *rates = ie + 1; | |
b481de9c ZY |
1143 | |
1144 | for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) { | |
1145 | if (bit & supported_rate) { | |
1146 | ret_rates |= bit; | |
bb8c093b | 1147 | rates[*cnt] = iwl4965_rates[i].ieee | |
c7c46676 TW |
1148 | ((bit & basic_rate) ? 0x80 : 0x00); |
1149 | (*cnt)++; | |
1150 | (*left)--; | |
1151 | if ((*left <= 0) || | |
1152 | (*cnt >= IWL_SUPPORTED_RATES_IE_LEN)) | |
b481de9c ZY |
1153 | break; |
1154 | } | |
1155 | } | |
1156 | ||
1157 | return ret_rates; | |
1158 | } | |
1159 | ||
d1141dfb EG |
1160 | #ifdef CONFIG_IWL4965_HT |
1161 | static void iwl4965_ht_conf(struct iwl_priv *priv, | |
1162 | struct ieee80211_bss_conf *bss_conf) | |
1163 | { | |
1164 | struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf; | |
1165 | struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf; | |
1166 | struct iwl_ht_info *iwl_conf = &priv->current_ht_config; | |
1167 | ||
1168 | IWL_DEBUG_MAC80211("enter: \n"); | |
1169 | ||
1170 | iwl_conf->is_ht = bss_conf->assoc_ht; | |
1171 | ||
1172 | if (!iwl_conf->is_ht) | |
1173 | return; | |
1174 | ||
1175 | priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2); | |
1176 | ||
1177 | if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20) | |
1178 | iwl_conf->sgf |= 0x1; | |
1179 | if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40) | |
1180 | iwl_conf->sgf |= 0x2; | |
1181 | ||
1182 | iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD); | |
1183 | iwl_conf->max_amsdu_size = | |
1184 | !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU); | |
1185 | ||
1186 | iwl_conf->supported_chan_width = | |
1187 | !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH); | |
1188 | iwl_conf->extension_chan_offset = | |
1189 | ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET; | |
1190 | /* If no above or below channel supplied disable FAT channel */ | |
1191 | if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE && | |
1192 | iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW) | |
1193 | iwl_conf->supported_chan_width = 0; | |
1194 | ||
1195 | iwl_conf->tx_mimo_ps_mode = | |
1196 | (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2); | |
1197 | memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16); | |
1198 | ||
1199 | iwl_conf->control_channel = ht_bss_conf->primary_channel; | |
1200 | iwl_conf->tx_chan_width = | |
1201 | !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH); | |
1202 | iwl_conf->ht_protection = | |
1203 | ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION; | |
1204 | iwl_conf->non_GF_STA_present = | |
1205 | !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT); | |
1206 | ||
1207 | IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel); | |
1208 | IWL_DEBUG_MAC80211("leave\n"); | |
1209 | } | |
1210 | ||
1211 | static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband, | |
1212 | u8 *pos, int *left) | |
1213 | { | |
1214 | struct ieee80211_ht_cap *ht_cap; | |
1215 | ||
1216 | if (!sband || !sband->ht_info.ht_supported) | |
1217 | return; | |
1218 | ||
1219 | if (*left < sizeof(struct ieee80211_ht_cap)) | |
1220 | return; | |
1221 | ||
1222 | *pos++ = sizeof(struct ieee80211_ht_cap); | |
1223 | ht_cap = (struct ieee80211_ht_cap *) pos; | |
1224 | ||
1225 | ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap); | |
1226 | memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16); | |
1227 | ht_cap->ampdu_params_info = | |
1228 | (sband->ht_info.ampdu_factor & IEEE80211_HT_CAP_AMPDU_FACTOR) | | |
1229 | ((sband->ht_info.ampdu_density << 2) & | |
1230 | IEEE80211_HT_CAP_AMPDU_DENSITY); | |
1231 | *left -= sizeof(struct ieee80211_ht_cap); | |
1232 | } | |
1233 | #else | |
1234 | static inline void iwl4965_ht_conf(struct iwl_priv *priv, | |
1235 | struct ieee80211_bss_conf *bss_conf) | |
1236 | { | |
1237 | } | |
1238 | static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband, | |
1239 | u8 *pos, int *left) | |
1240 | { | |
1241 | } | |
1242 | #endif | |
1243 | ||
1244 | ||
b481de9c | 1245 | /** |
bb8c093b | 1246 | * iwl4965_fill_probe_req - fill in all required fields and IE for probe request |
b481de9c | 1247 | */ |
c79dd5b5 | 1248 | static u16 iwl4965_fill_probe_req(struct iwl_priv *priv, |
78330fdd TW |
1249 | enum ieee80211_band band, |
1250 | struct ieee80211_mgmt *frame, | |
1251 | int left, int is_direct) | |
b481de9c ZY |
1252 | { |
1253 | int len = 0; | |
1254 | u8 *pos = NULL; | |
bee488db | 1255 | u16 active_rates, ret_rates, cck_rates, active_rate_basic; |
78330fdd | 1256 | const struct ieee80211_supported_band *sband = |
d1141dfb | 1257 | iwl_get_hw_mode(priv, band); |
b481de9c ZY |
1258 | |
1259 | /* Make sure there is enough space for the probe request, | |
1260 | * two mandatory IEs and the data */ | |
1261 | left -= 24; | |
1262 | if (left < 0) | |
1263 | return 0; | |
1264 | len += 24; | |
1265 | ||
1266 | frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); | |
bb8c093b | 1267 | memcpy(frame->da, iwl4965_broadcast_addr, ETH_ALEN); |
b481de9c | 1268 | memcpy(frame->sa, priv->mac_addr, ETH_ALEN); |
bb8c093b | 1269 | memcpy(frame->bssid, iwl4965_broadcast_addr, ETH_ALEN); |
b481de9c ZY |
1270 | frame->seq_ctrl = 0; |
1271 | ||
1272 | /* fill in our indirect SSID IE */ | |
1273 | /* ...next IE... */ | |
1274 | ||
1275 | left -= 2; | |
1276 | if (left < 0) | |
1277 | return 0; | |
1278 | len += 2; | |
1279 | pos = &(frame->u.probe_req.variable[0]); | |
1280 | *pos++ = WLAN_EID_SSID; | |
1281 | *pos++ = 0; | |
1282 | ||
1283 | /* fill in our direct SSID IE... */ | |
1284 | if (is_direct) { | |
1285 | /* ...next IE... */ | |
1286 | left -= 2 + priv->essid_len; | |
1287 | if (left < 0) | |
1288 | return 0; | |
1289 | /* ... fill it in... */ | |
1290 | *pos++ = WLAN_EID_SSID; | |
1291 | *pos++ = priv->essid_len; | |
1292 | memcpy(pos, priv->essid, priv->essid_len); | |
1293 | pos += priv->essid_len; | |
1294 | len += 2 + priv->essid_len; | |
1295 | } | |
1296 | ||
1297 | /* fill in supported rate */ | |
1298 | /* ...next IE... */ | |
1299 | left -= 2; | |
1300 | if (left < 0) | |
1301 | return 0; | |
c7c46676 | 1302 | |
b481de9c ZY |
1303 | /* ... fill it in... */ |
1304 | *pos++ = WLAN_EID_SUPP_RATES; | |
1305 | *pos = 0; | |
c7c46676 | 1306 | |
bee488db | 1307 | /* exclude 60M rate */ |
1308 | active_rates = priv->rates_mask; | |
1309 | active_rates &= ~IWL_RATE_60M_MASK; | |
1310 | ||
1311 | active_rate_basic = active_rates & IWL_BASIC_RATES_MASK; | |
b481de9c | 1312 | |
c7c46676 | 1313 | cck_rates = IWL_CCK_RATES_MASK & active_rates; |
bb8c093b | 1314 | ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates, |
bee488db | 1315 | active_rate_basic, &left); |
c7c46676 TW |
1316 | active_rates &= ~ret_rates; |
1317 | ||
bb8c093b | 1318 | ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates, |
bee488db | 1319 | active_rate_basic, &left); |
c7c46676 TW |
1320 | active_rates &= ~ret_rates; |
1321 | ||
b481de9c ZY |
1322 | len += 2 + *pos; |
1323 | pos += (*pos) + 1; | |
c7c46676 | 1324 | if (active_rates == 0) |
b481de9c ZY |
1325 | goto fill_end; |
1326 | ||
1327 | /* fill in supported extended rate */ | |
1328 | /* ...next IE... */ | |
1329 | left -= 2; | |
1330 | if (left < 0) | |
1331 | return 0; | |
1332 | /* ... fill it in... */ | |
1333 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
1334 | *pos = 0; | |
bb8c093b | 1335 | iwl4965_supported_rate_to_ie(pos, active_rates, |
bee488db | 1336 | active_rate_basic, &left); |
b481de9c ZY |
1337 | if (*pos > 0) |
1338 | len += 2 + *pos; | |
1339 | ||
b481de9c | 1340 | fill_end: |
d1141dfb EG |
1341 | /* fill in HT IE */ |
1342 | left -= 2; | |
1343 | if (left < 0) | |
1344 | return 0; | |
1345 | ||
1346 | *pos++ = WLAN_EID_HT_CAPABILITY; | |
1347 | *pos = 0; | |
1348 | ||
1349 | iwl_ht_cap_to_ie(sband, pos, &left); | |
1350 | ||
1351 | if (*pos > 0) | |
1352 | len += 2 + *pos; | |
b481de9c ZY |
1353 | return (u16)len; |
1354 | } | |
1355 | ||
1356 | /* | |
1357 | * QoS support | |
1358 | */ | |
c79dd5b5 | 1359 | static int iwl4965_send_qos_params_command(struct iwl_priv *priv, |
bb8c093b | 1360 | struct iwl4965_qosparam_cmd *qos) |
b481de9c ZY |
1361 | { |
1362 | ||
857485c0 | 1363 | return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM, |
bb8c093b | 1364 | sizeof(struct iwl4965_qosparam_cmd), qos); |
b481de9c ZY |
1365 | } |
1366 | ||
c79dd5b5 | 1367 | static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force) |
b481de9c ZY |
1368 | { |
1369 | unsigned long flags; | |
1370 | ||
b481de9c ZY |
1371 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
1372 | return; | |
1373 | ||
1374 | if (!priv->qos_data.qos_enable) | |
1375 | return; | |
1376 | ||
1377 | spin_lock_irqsave(&priv->lock, flags); | |
1378 | priv->qos_data.def_qos_parm.qos_flags = 0; | |
1379 | ||
1380 | if (priv->qos_data.qos_cap.q_AP.queue_request && | |
1381 | !priv->qos_data.qos_cap.q_AP.txop_request) | |
1382 | priv->qos_data.def_qos_parm.qos_flags |= | |
1383 | QOS_PARAM_FLG_TXOP_TYPE_MSK; | |
b481de9c ZY |
1384 | if (priv->qos_data.qos_active) |
1385 | priv->qos_data.def_qos_parm.qos_flags |= | |
1386 | QOS_PARAM_FLG_UPDATE_EDCA_MSK; | |
1387 | ||
c8b0e6e1 | 1388 | #ifdef CONFIG_IWL4965_HT |
fd105e79 | 1389 | if (priv->current_ht_config.is_ht) |
f1f1f5c7 | 1390 | priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK; |
c8b0e6e1 | 1391 | #endif /* CONFIG_IWL4965_HT */ |
f1f1f5c7 | 1392 | |
b481de9c ZY |
1393 | spin_unlock_irqrestore(&priv->lock, flags); |
1394 | ||
3109ece1 | 1395 | if (force || iwl_is_associated(priv)) { |
f1f1f5c7 TW |
1396 | IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n", |
1397 | priv->qos_data.qos_active, | |
1398 | priv->qos_data.def_qos_parm.qos_flags); | |
b481de9c | 1399 | |
bb8c093b | 1400 | iwl4965_send_qos_params_command(priv, |
b481de9c ZY |
1401 | &(priv->qos_data.def_qos_parm)); |
1402 | } | |
1403 | } | |
1404 | ||
c79dd5b5 | 1405 | int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header) |
b481de9c ZY |
1406 | { |
1407 | /* Filter incoming packets to determine if they are targeted toward | |
1408 | * this network, discarding packets coming from ourselves */ | |
1409 | switch (priv->iw_mode) { | |
1410 | case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */ | |
1411 | /* packets from our adapter are dropped (echo) */ | |
1412 | if (!compare_ether_addr(header->addr2, priv->mac_addr)) | |
1413 | return 0; | |
1414 | /* {broad,multi}cast packets to our IBSS go through */ | |
1415 | if (is_multicast_ether_addr(header->addr1)) | |
1416 | return !compare_ether_addr(header->addr3, priv->bssid); | |
1417 | /* packets to our adapter go through */ | |
1418 | return !compare_ether_addr(header->addr1, priv->mac_addr); | |
1419 | case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */ | |
1420 | /* packets from our adapter are dropped (echo) */ | |
1421 | if (!compare_ether_addr(header->addr3, priv->mac_addr)) | |
1422 | return 0; | |
1423 | /* {broad,multi}cast packets to our BSS go through */ | |
1424 | if (is_multicast_ether_addr(header->addr1)) | |
1425 | return !compare_ether_addr(header->addr2, priv->bssid); | |
1426 | /* packets to our adapter go through */ | |
1427 | return !compare_ether_addr(header->addr1, priv->mac_addr); | |
69dc5d9d TW |
1428 | default: |
1429 | break; | |
b481de9c ZY |
1430 | } |
1431 | ||
1432 | return 1; | |
1433 | } | |
1434 | ||
1435 | #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x | |
1436 | ||
bb8c093b | 1437 | static const char *iwl4965_get_tx_fail_reason(u32 status) |
b481de9c ZY |
1438 | { |
1439 | switch (status & TX_STATUS_MSK) { | |
1440 | case TX_STATUS_SUCCESS: | |
1441 | return "SUCCESS"; | |
1442 | TX_STATUS_ENTRY(SHORT_LIMIT); | |
1443 | TX_STATUS_ENTRY(LONG_LIMIT); | |
1444 | TX_STATUS_ENTRY(FIFO_UNDERRUN); | |
1445 | TX_STATUS_ENTRY(MGMNT_ABORT); | |
1446 | TX_STATUS_ENTRY(NEXT_FRAG); | |
1447 | TX_STATUS_ENTRY(LIFE_EXPIRE); | |
1448 | TX_STATUS_ENTRY(DEST_PS); | |
1449 | TX_STATUS_ENTRY(ABORTED); | |
1450 | TX_STATUS_ENTRY(BT_RETRY); | |
1451 | TX_STATUS_ENTRY(STA_INVALID); | |
1452 | TX_STATUS_ENTRY(FRAG_DROPPED); | |
1453 | TX_STATUS_ENTRY(TID_DISABLE); | |
1454 | TX_STATUS_ENTRY(FRAME_FLUSHED); | |
1455 | TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL); | |
1456 | TX_STATUS_ENTRY(TX_LOCKED); | |
1457 | TX_STATUS_ENTRY(NO_BEACON_ON_RADAR); | |
1458 | } | |
1459 | ||
1460 | return "UNKNOWN"; | |
1461 | } | |
1462 | ||
1463 | /** | |
bb8c093b | 1464 | * iwl4965_scan_cancel - Cancel any currently executing HW scan |
b481de9c ZY |
1465 | * |
1466 | * NOTE: priv->mutex is not required before calling this function | |
1467 | */ | |
c79dd5b5 | 1468 | static int iwl4965_scan_cancel(struct iwl_priv *priv) |
b481de9c ZY |
1469 | { |
1470 | if (!test_bit(STATUS_SCAN_HW, &priv->status)) { | |
1471 | clear_bit(STATUS_SCANNING, &priv->status); | |
1472 | return 0; | |
1473 | } | |
1474 | ||
1475 | if (test_bit(STATUS_SCANNING, &priv->status)) { | |
1476 | if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) { | |
1477 | IWL_DEBUG_SCAN("Queuing scan abort.\n"); | |
1478 | set_bit(STATUS_SCAN_ABORTING, &priv->status); | |
1479 | queue_work(priv->workqueue, &priv->abort_scan); | |
1480 | ||
1481 | } else | |
1482 | IWL_DEBUG_SCAN("Scan abort already in progress.\n"); | |
1483 | ||
1484 | return test_bit(STATUS_SCANNING, &priv->status); | |
1485 | } | |
1486 | ||
1487 | return 0; | |
1488 | } | |
1489 | ||
1490 | /** | |
bb8c093b | 1491 | * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan |
b481de9c ZY |
1492 | * @ms: amount of time to wait (in milliseconds) for scan to abort |
1493 | * | |
1494 | * NOTE: priv->mutex must be held before calling this function | |
1495 | */ | |
c79dd5b5 | 1496 | static int iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms) |
b481de9c ZY |
1497 | { |
1498 | unsigned long now = jiffies; | |
1499 | int ret; | |
1500 | ||
bb8c093b | 1501 | ret = iwl4965_scan_cancel(priv); |
b481de9c ZY |
1502 | if (ret && ms) { |
1503 | mutex_unlock(&priv->mutex); | |
1504 | while (!time_after(jiffies, now + msecs_to_jiffies(ms)) && | |
1505 | test_bit(STATUS_SCANNING, &priv->status)) | |
1506 | msleep(1); | |
1507 | mutex_lock(&priv->mutex); | |
1508 | ||
1509 | return test_bit(STATUS_SCANNING, &priv->status); | |
1510 | } | |
1511 | ||
1512 | return ret; | |
1513 | } | |
1514 | ||
c79dd5b5 | 1515 | static void iwl4965_sequence_reset(struct iwl_priv *priv) |
b481de9c ZY |
1516 | { |
1517 | /* Reset ieee stats */ | |
1518 | ||
1519 | /* We don't reset the net_device_stats (ieee->stats) on | |
1520 | * re-association */ | |
1521 | ||
1522 | priv->last_seq_num = -1; | |
1523 | priv->last_frag_num = -1; | |
1524 | priv->last_packet_time = 0; | |
1525 | ||
bb8c093b | 1526 | iwl4965_scan_cancel(priv); |
b481de9c ZY |
1527 | } |
1528 | ||
1529 | #define MAX_UCODE_BEACON_INTERVAL 4096 | |
1530 | #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA) | |
1531 | ||
bb8c093b | 1532 | static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val) |
b481de9c ZY |
1533 | { |
1534 | u16 new_val = 0; | |
1535 | u16 beacon_factor = 0; | |
1536 | ||
1537 | beacon_factor = | |
1538 | (beacon_val + MAX_UCODE_BEACON_INTERVAL) | |
1539 | / MAX_UCODE_BEACON_INTERVAL; | |
1540 | new_val = beacon_val / beacon_factor; | |
1541 | ||
1542 | return cpu_to_le16(new_val); | |
1543 | } | |
1544 | ||
c79dd5b5 | 1545 | static void iwl4965_setup_rxon_timing(struct iwl_priv *priv) |
b481de9c ZY |
1546 | { |
1547 | u64 interval_tm_unit; | |
1548 | u64 tsf, result; | |
1549 | unsigned long flags; | |
1550 | struct ieee80211_conf *conf = NULL; | |
1551 | u16 beacon_int = 0; | |
1552 | ||
1553 | conf = ieee80211_get_hw_conf(priv->hw); | |
1554 | ||
1555 | spin_lock_irqsave(&priv->lock, flags); | |
3109ece1 TW |
1556 | priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32); |
1557 | priv->rxon_timing.timestamp.dw[0] = | |
1558 | cpu_to_le32(priv->timestamp & 0xFFFFFFFF); | |
b481de9c ZY |
1559 | |
1560 | priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL; | |
1561 | ||
3109ece1 | 1562 | tsf = priv->timestamp; |
b481de9c ZY |
1563 | |
1564 | beacon_int = priv->beacon_int; | |
1565 | spin_unlock_irqrestore(&priv->lock, flags); | |
1566 | ||
1567 | if (priv->iw_mode == IEEE80211_IF_TYPE_STA) { | |
1568 | if (beacon_int == 0) { | |
1569 | priv->rxon_timing.beacon_interval = cpu_to_le16(100); | |
1570 | priv->rxon_timing.beacon_init_val = cpu_to_le32(102400); | |
1571 | } else { | |
1572 | priv->rxon_timing.beacon_interval = | |
1573 | cpu_to_le16(beacon_int); | |
1574 | priv->rxon_timing.beacon_interval = | |
bb8c093b | 1575 | iwl4965_adjust_beacon_interval( |
b481de9c ZY |
1576 | le16_to_cpu(priv->rxon_timing.beacon_interval)); |
1577 | } | |
1578 | ||
1579 | priv->rxon_timing.atim_window = 0; | |
1580 | } else { | |
1581 | priv->rxon_timing.beacon_interval = | |
bb8c093b | 1582 | iwl4965_adjust_beacon_interval(conf->beacon_int); |
b481de9c ZY |
1583 | /* TODO: we need to get atim_window from upper stack |
1584 | * for now we set to 0 */ | |
1585 | priv->rxon_timing.atim_window = 0; | |
1586 | } | |
1587 | ||
1588 | interval_tm_unit = | |
1589 | (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024); | |
1590 | result = do_div(tsf, interval_tm_unit); | |
1591 | priv->rxon_timing.beacon_init_val = | |
1592 | cpu_to_le32((u32) ((u64) interval_tm_unit - result)); | |
1593 | ||
1594 | IWL_DEBUG_ASSOC | |
1595 | ("beacon interval %d beacon timer %d beacon tim %d\n", | |
1596 | le16_to_cpu(priv->rxon_timing.beacon_interval), | |
1597 | le32_to_cpu(priv->rxon_timing.beacon_init_val), | |
1598 | le16_to_cpu(priv->rxon_timing.atim_window)); | |
1599 | } | |
1600 | ||
c79dd5b5 | 1601 | static int iwl4965_scan_initiate(struct iwl_priv *priv) |
b481de9c ZY |
1602 | { |
1603 | if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { | |
1604 | IWL_ERROR("APs don't scan.\n"); | |
1605 | return 0; | |
1606 | } | |
1607 | ||
fee1247a | 1608 | if (!iwl_is_ready_rf(priv)) { |
b481de9c ZY |
1609 | IWL_DEBUG_SCAN("Aborting scan due to not ready.\n"); |
1610 | return -EIO; | |
1611 | } | |
1612 | ||
1613 | if (test_bit(STATUS_SCANNING, &priv->status)) { | |
1614 | IWL_DEBUG_SCAN("Scan already in progress.\n"); | |
1615 | return -EAGAIN; | |
1616 | } | |
1617 | ||
1618 | if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) { | |
1619 | IWL_DEBUG_SCAN("Scan request while abort pending. " | |
1620 | "Queuing.\n"); | |
1621 | return -EAGAIN; | |
1622 | } | |
1623 | ||
1624 | IWL_DEBUG_INFO("Starting scan...\n"); | |
1625 | priv->scan_bands = 2; | |
1626 | set_bit(STATUS_SCANNING, &priv->status); | |
1627 | priv->scan_start = jiffies; | |
1628 | priv->scan_pass_start = priv->scan_start; | |
1629 | ||
1630 | queue_work(priv->workqueue, &priv->request_scan); | |
1631 | ||
1632 | return 0; | |
1633 | } | |
1634 | ||
b481de9c | 1635 | |
c79dd5b5 | 1636 | static void iwl4965_set_flags_for_phymode(struct iwl_priv *priv, |
8318d78a | 1637 | enum ieee80211_band band) |
b481de9c | 1638 | { |
8318d78a | 1639 | if (band == IEEE80211_BAND_5GHZ) { |
b481de9c ZY |
1640 | priv->staging_rxon.flags &= |
1641 | ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK | |
1642 | | RXON_FLG_CCK_MSK); | |
1643 | priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK; | |
1644 | } else { | |
508e32e1 | 1645 | /* Copied from iwl4965_post_associate() */ |
b481de9c ZY |
1646 | if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) |
1647 | priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK; | |
1648 | else | |
1649 | priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK; | |
1650 | ||
1651 | if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) | |
1652 | priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK; | |
1653 | ||
1654 | priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK; | |
1655 | priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK; | |
1656 | priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK; | |
1657 | } | |
1658 | } | |
1659 | ||
1660 | /* | |
01ebd063 | 1661 | * initialize rxon structure with default values from eeprom |
b481de9c | 1662 | */ |
c79dd5b5 | 1663 | static void iwl4965_connection_init_rx_config(struct iwl_priv *priv) |
b481de9c | 1664 | { |
bf85ea4f | 1665 | const struct iwl_channel_info *ch_info; |
b481de9c ZY |
1666 | |
1667 | memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon)); | |
1668 | ||
1669 | switch (priv->iw_mode) { | |
1670 | case IEEE80211_IF_TYPE_AP: | |
1671 | priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP; | |
1672 | break; | |
1673 | ||
1674 | case IEEE80211_IF_TYPE_STA: | |
1675 | priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS; | |
1676 | priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK; | |
1677 | break; | |
1678 | ||
1679 | case IEEE80211_IF_TYPE_IBSS: | |
1680 | priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS; | |
1681 | priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK; | |
1682 | priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK | | |
1683 | RXON_FILTER_ACCEPT_GRP_MSK; | |
1684 | break; | |
1685 | ||
1686 | case IEEE80211_IF_TYPE_MNTR: | |
1687 | priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER; | |
1688 | priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK | | |
1689 | RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK; | |
1690 | break; | |
69dc5d9d TW |
1691 | default: |
1692 | IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode); | |
1693 | break; | |
b481de9c ZY |
1694 | } |
1695 | ||
1696 | #if 0 | |
1697 | /* TODO: Figure out when short_preamble would be set and cache from | |
1698 | * that */ | |
1699 | if (!hw_to_local(priv->hw)->short_preamble) | |
1700 | priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; | |
1701 | else | |
1702 | priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; | |
1703 | #endif | |
1704 | ||
8622e705 | 1705 | ch_info = iwl_get_channel_info(priv, priv->band, |
b481de9c ZY |
1706 | le16_to_cpu(priv->staging_rxon.channel)); |
1707 | ||
1708 | if (!ch_info) | |
1709 | ch_info = &priv->channel_info[0]; | |
1710 | ||
1711 | /* | |
1712 | * in some case A channels are all non IBSS | |
1713 | * in this case force B/G channel | |
1714 | */ | |
1715 | if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) && | |
1716 | !(is_channel_ibss(ch_info))) | |
1717 | ch_info = &priv->channel_info[0]; | |
1718 | ||
1719 | priv->staging_rxon.channel = cpu_to_le16(ch_info->channel); | |
8318d78a | 1720 | priv->band = ch_info->band; |
b481de9c | 1721 | |
8318d78a | 1722 | iwl4965_set_flags_for_phymode(priv, priv->band); |
b481de9c ZY |
1723 | |
1724 | priv->staging_rxon.ofdm_basic_rates = | |
1725 | (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF; | |
1726 | priv->staging_rxon.cck_basic_rates = | |
1727 | (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF; | |
1728 | ||
1729 | priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK | | |
1730 | RXON_FLG_CHANNEL_MODE_PURE_40_MSK); | |
1731 | memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN); | |
1732 | memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN); | |
1733 | priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff; | |
1734 | priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff; | |
1735 | iwl4965_set_rxon_chain(priv); | |
1736 | } | |
1737 | ||
c79dd5b5 | 1738 | static int iwl4965_set_mode(struct iwl_priv *priv, int mode) |
b481de9c | 1739 | { |
b481de9c | 1740 | if (mode == IEEE80211_IF_TYPE_IBSS) { |
bf85ea4f | 1741 | const struct iwl_channel_info *ch_info; |
b481de9c | 1742 | |
8622e705 | 1743 | ch_info = iwl_get_channel_info(priv, |
8318d78a | 1744 | priv->band, |
b481de9c ZY |
1745 | le16_to_cpu(priv->staging_rxon.channel)); |
1746 | ||
1747 | if (!ch_info || !is_channel_ibss(ch_info)) { | |
1748 | IWL_ERROR("channel %d not IBSS channel\n", | |
1749 | le16_to_cpu(priv->staging_rxon.channel)); | |
1750 | return -EINVAL; | |
1751 | } | |
1752 | } | |
1753 | ||
b481de9c ZY |
1754 | priv->iw_mode = mode; |
1755 | ||
bb8c093b | 1756 | iwl4965_connection_init_rx_config(priv); |
b481de9c ZY |
1757 | memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN); |
1758 | ||
bf85ea4f | 1759 | iwlcore_clear_stations_table(priv); |
b481de9c | 1760 | |
fde3571f | 1761 | /* dont commit rxon if rf-kill is on*/ |
fee1247a | 1762 | if (!iwl_is_ready_rf(priv)) |
fde3571f MA |
1763 | return -EAGAIN; |
1764 | ||
1765 | cancel_delayed_work(&priv->scan_check); | |
1766 | if (iwl4965_scan_cancel_timeout(priv, 100)) { | |
1767 | IWL_WARNING("Aborted scan still in progress after 100ms\n"); | |
1768 | IWL_DEBUG_MAC80211("leaving - scan abort failed.\n"); | |
1769 | return -EAGAIN; | |
1770 | } | |
1771 | ||
bb8c093b | 1772 | iwl4965_commit_rxon(priv); |
b481de9c ZY |
1773 | |
1774 | return 0; | |
1775 | } | |
1776 | ||
c79dd5b5 | 1777 | static void iwl4965_build_tx_cmd_hwcrypto(struct iwl_priv *priv, |
b481de9c | 1778 | struct ieee80211_tx_control *ctl, |
857485c0 | 1779 | struct iwl_cmd *cmd, |
b481de9c | 1780 | struct sk_buff *skb_frag, |
deb09c43 | 1781 | int sta_id) |
b481de9c | 1782 | { |
deb09c43 | 1783 | struct iwl4965_hw_key *keyinfo = &priv->stations[sta_id].keyinfo; |
6974e363 EG |
1784 | struct iwl_wep_key *wepkey; |
1785 | int keyidx = 0; | |
1786 | ||
1c014420 | 1787 | BUG_ON(ctl->hw_key->hw_key_idx > 3); |
b481de9c ZY |
1788 | |
1789 | switch (keyinfo->alg) { | |
1790 | case ALG_CCMP: | |
1791 | cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM; | |
1792 | memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen); | |
8236e183 MS |
1793 | if (ctl->flags & IEEE80211_TXCTL_AMPDU) |
1794 | cmd->cmd.tx.tx_flags |= TX_CMD_FLG_AGG_CCMP_MSK; | |
b481de9c ZY |
1795 | IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n"); |
1796 | break; | |
1797 | ||
1798 | case ALG_TKIP: | |
b481de9c | 1799 | cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP; |
2bc75089 EG |
1800 | ieee80211_get_tkip_key(keyinfo->conf, skb_frag, |
1801 | IEEE80211_TKIP_P2_KEY, cmd->cmd.tx.key); | |
1802 | IWL_DEBUG_TX("tx_cmd with tkip hwcrypto\n"); | |
b481de9c ZY |
1803 | break; |
1804 | ||
1805 | case ALG_WEP: | |
1c014420 | 1806 | wepkey = &priv->wep_keys[ctl->hw_key->hw_key_idx]; |
6974e363 EG |
1807 | cmd->cmd.tx.sec_ctl = 0; |
1808 | if (priv->default_wep_key) { | |
1809 | /* the WEP key was sent as static */ | |
1c014420 | 1810 | keyidx = ctl->hw_key->hw_key_idx; |
6974e363 EG |
1811 | memcpy(&cmd->cmd.tx.key[3], wepkey->key, |
1812 | wepkey->key_size); | |
1813 | if (wepkey->key_size == WEP_KEY_LEN_128) | |
1814 | cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128; | |
1815 | } else { | |
0211ddda EG |
1816 | /* the WEP key was sent as dynamic */ |
1817 | keyidx = keyinfo->keyidx; | |
1818 | memcpy(&cmd->cmd.tx.key[3], keyinfo->key, | |
1819 | keyinfo->keylen); | |
1820 | if (keyinfo->keylen == WEP_KEY_LEN_128) | |
1821 | cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128; | |
6974e363 | 1822 | } |
b481de9c | 1823 | |
6974e363 EG |
1824 | cmd->cmd.tx.sec_ctl |= (TX_CMD_SEC_WEP | |
1825 | (keyidx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT); | |
b481de9c ZY |
1826 | |
1827 | IWL_DEBUG_TX("Configuring packet for WEP encryption " | |
6974e363 | 1828 | "with key %d\n", keyidx); |
b481de9c ZY |
1829 | break; |
1830 | ||
b481de9c ZY |
1831 | default: |
1832 | printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg); | |
1833 | break; | |
1834 | } | |
1835 | } | |
1836 | ||
1837 | /* | |
1838 | * handle build REPLY_TX command notification. | |
1839 | */ | |
c79dd5b5 | 1840 | static void iwl4965_build_tx_cmd_basic(struct iwl_priv *priv, |
857485c0 | 1841 | struct iwl_cmd *cmd, |
b481de9c ZY |
1842 | struct ieee80211_tx_control *ctrl, |
1843 | struct ieee80211_hdr *hdr, | |
1844 | int is_unicast, u8 std_id) | |
1845 | { | |
1846 | __le16 *qc; | |
1847 | u16 fc = le16_to_cpu(hdr->frame_control); | |
1848 | __le32 tx_flags = cmd->cmd.tx.tx_flags; | |
1849 | ||
1850 | cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; | |
1851 | if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) { | |
1852 | tx_flags |= TX_CMD_FLG_ACK_MSK; | |
1853 | if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) | |
1854 | tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; | |
1855 | if (ieee80211_is_probe_response(fc) && | |
1856 | !(le16_to_cpu(hdr->seq_ctrl) & 0xf)) | |
1857 | tx_flags |= TX_CMD_FLG_TSF_MSK; | |
1858 | } else { | |
1859 | tx_flags &= (~TX_CMD_FLG_ACK_MSK); | |
1860 | tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; | |
1861 | } | |
1862 | ||
87e4f7df TW |
1863 | if (ieee80211_is_back_request(fc)) |
1864 | tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK; | |
1865 | ||
1866 | ||
b481de9c ZY |
1867 | cmd->cmd.tx.sta_id = std_id; |
1868 | if (ieee80211_get_morefrag(hdr)) | |
1869 | tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK; | |
1870 | ||
1871 | qc = ieee80211_get_qos_ctrl(hdr); | |
1872 | if (qc) { | |
1873 | cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf); | |
1874 | tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK; | |
1875 | } else | |
1876 | tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; | |
1877 | ||
1878 | if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) { | |
1879 | tx_flags |= TX_CMD_FLG_RTS_MSK; | |
1880 | tx_flags &= ~TX_CMD_FLG_CTS_MSK; | |
1881 | } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) { | |
1882 | tx_flags &= ~TX_CMD_FLG_RTS_MSK; | |
1883 | tx_flags |= TX_CMD_FLG_CTS_MSK; | |
1884 | } | |
1885 | ||
1886 | if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK)) | |
1887 | tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK; | |
1888 | ||
1889 | tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK); | |
1890 | if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) { | |
1891 | if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ || | |
1892 | (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ) | |
bc434dd2 | 1893 | cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3); |
b481de9c | 1894 | else |
bc434dd2 | 1895 | cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2); |
ab53d8af | 1896 | } else { |
b481de9c | 1897 | cmd->cmd.tx.timeout.pm_frame_timeout = 0; |
ab53d8af | 1898 | } |
b481de9c ZY |
1899 | |
1900 | cmd->cmd.tx.driver_txop = 0; | |
1901 | cmd->cmd.tx.tx_flags = tx_flags; | |
1902 | cmd->cmd.tx.next_frame_len = 0; | |
1903 | } | |
19758bef TW |
1904 | static void iwl_update_tx_stats(struct iwl_priv *priv, u16 fc, u16 len) |
1905 | { | |
1906 | /* 0 - mgmt, 1 - cnt, 2 - data */ | |
1907 | int idx = (fc & IEEE80211_FCTL_FTYPE) >> 2; | |
1908 | priv->tx_stats[idx].cnt++; | |
1909 | priv->tx_stats[idx].bytes += len; | |
1910 | } | |
6440adb5 BC |
1911 | /** |
1912 | * iwl4965_get_sta_id - Find station's index within station table | |
1913 | * | |
1914 | * If new IBSS station, create new entry in station table | |
1915 | */ | |
c79dd5b5 | 1916 | static int iwl4965_get_sta_id(struct iwl_priv *priv, |
9fbab516 | 1917 | struct ieee80211_hdr *hdr) |
b481de9c ZY |
1918 | { |
1919 | int sta_id; | |
1920 | u16 fc = le16_to_cpu(hdr->frame_control); | |
0795af57 | 1921 | DECLARE_MAC_BUF(mac); |
b481de9c | 1922 | |
6440adb5 | 1923 | /* If this frame is broadcast or management, use broadcast station id */ |
b481de9c ZY |
1924 | if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) || |
1925 | is_multicast_ether_addr(hdr->addr1)) | |
5425e490 | 1926 | return priv->hw_params.bcast_sta_id; |
b481de9c ZY |
1927 | |
1928 | switch (priv->iw_mode) { | |
1929 | ||
6440adb5 BC |
1930 | /* If we are a client station in a BSS network, use the special |
1931 | * AP station entry (that's the only station we communicate with) */ | |
b481de9c ZY |
1932 | case IEEE80211_IF_TYPE_STA: |
1933 | return IWL_AP_ID; | |
1934 | ||
1935 | /* If we are an AP, then find the station, or use BCAST */ | |
1936 | case IEEE80211_IF_TYPE_AP: | |
947b13a7 | 1937 | sta_id = iwl_find_station(priv, hdr->addr1); |
b481de9c ZY |
1938 | if (sta_id != IWL_INVALID_STATION) |
1939 | return sta_id; | |
5425e490 | 1940 | return priv->hw_params.bcast_sta_id; |
b481de9c | 1941 | |
6440adb5 BC |
1942 | /* If this frame is going out to an IBSS network, find the station, |
1943 | * or create a new station table entry */ | |
b481de9c | 1944 | case IEEE80211_IF_TYPE_IBSS: |
947b13a7 | 1945 | sta_id = iwl_find_station(priv, hdr->addr1); |
b481de9c ZY |
1946 | if (sta_id != IWL_INVALID_STATION) |
1947 | return sta_id; | |
1948 | ||
6440adb5 | 1949 | /* Create new station table entry */ |
67d62035 RR |
1950 | sta_id = iwl4965_add_station_flags(priv, hdr->addr1, |
1951 | 0, CMD_ASYNC, NULL); | |
b481de9c ZY |
1952 | |
1953 | if (sta_id != IWL_INVALID_STATION) | |
1954 | return sta_id; | |
1955 | ||
0795af57 | 1956 | IWL_DEBUG_DROP("Station %s not in station map. " |
b481de9c | 1957 | "Defaulting to broadcast...\n", |
0795af57 | 1958 | print_mac(mac, hdr->addr1)); |
0a6857e7 | 1959 | iwl_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr)); |
5425e490 | 1960 | return priv->hw_params.bcast_sta_id; |
b481de9c ZY |
1961 | |
1962 | default: | |
01ebd063 | 1963 | IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode); |
5425e490 | 1964 | return priv->hw_params.bcast_sta_id; |
b481de9c ZY |
1965 | } |
1966 | } | |
1967 | ||
1968 | /* | |
1969 | * start REPLY_TX command process | |
1970 | */ | |
c79dd5b5 | 1971 | static int iwl4965_tx_skb(struct iwl_priv *priv, |
b481de9c ZY |
1972 | struct sk_buff *skb, struct ieee80211_tx_control *ctl) |
1973 | { | |
1974 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; | |
bb8c093b | 1975 | struct iwl4965_tfd_frame *tfd; |
b481de9c ZY |
1976 | u32 *control_flags; |
1977 | int txq_id = ctl->queue; | |
bb8c093b CH |
1978 | struct iwl4965_tx_queue *txq = NULL; |
1979 | struct iwl4965_queue *q = NULL; | |
b481de9c ZY |
1980 | dma_addr_t phys_addr; |
1981 | dma_addr_t txcmd_phys; | |
87e4f7df | 1982 | dma_addr_t scratch_phys; |
857485c0 | 1983 | struct iwl_cmd *out_cmd = NULL; |
b481de9c ZY |
1984 | u16 len, idx, len_org; |
1985 | u8 id, hdr_len, unicast; | |
1986 | u8 sta_id; | |
1987 | u16 seq_number = 0; | |
1988 | u16 fc; | |
1989 | __le16 *qc; | |
1990 | u8 wait_write_ptr = 0; | |
1991 | unsigned long flags; | |
1992 | int rc; | |
1993 | ||
1994 | spin_lock_irqsave(&priv->lock, flags); | |
fee1247a | 1995 | if (iwl_is_rfkill(priv)) { |
b481de9c ZY |
1996 | IWL_DEBUG_DROP("Dropping - RF KILL\n"); |
1997 | goto drop_unlock; | |
1998 | } | |
1999 | ||
32bfd35d JB |
2000 | if (!priv->vif) { |
2001 | IWL_DEBUG_DROP("Dropping - !priv->vif\n"); | |
b481de9c ZY |
2002 | goto drop_unlock; |
2003 | } | |
2004 | ||
8318d78a | 2005 | if ((ctl->tx_rate->hw_value & 0xFF) == IWL_INVALID_RATE) { |
b481de9c ZY |
2006 | IWL_ERROR("ERROR: No TX rate available.\n"); |
2007 | goto drop_unlock; | |
2008 | } | |
2009 | ||
2010 | unicast = !is_multicast_ether_addr(hdr->addr1); | |
2011 | id = 0; | |
2012 | ||
2013 | fc = le16_to_cpu(hdr->frame_control); | |
2014 | ||
0a6857e7 | 2015 | #ifdef CONFIG_IWLWIFI_DEBUG |
b481de9c ZY |
2016 | if (ieee80211_is_auth(fc)) |
2017 | IWL_DEBUG_TX("Sending AUTH frame\n"); | |
2018 | else if (ieee80211_is_assoc_request(fc)) | |
2019 | IWL_DEBUG_TX("Sending ASSOC frame\n"); | |
2020 | else if (ieee80211_is_reassoc_request(fc)) | |
2021 | IWL_DEBUG_TX("Sending REASSOC frame\n"); | |
2022 | #endif | |
2023 | ||
7878a5a4 | 2024 | /* drop all data frame if we are not associated */ |
76f3915b | 2025 | if (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) && |
3109ece1 | 2026 | (!iwl_is_associated(priv) || |
a6477249 | 2027 | ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id) || |
76f3915b | 2028 | !priv->assoc_station_added)) { |
3109ece1 | 2029 | IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n"); |
b481de9c ZY |
2030 | goto drop_unlock; |
2031 | } | |
2032 | ||
2033 | spin_unlock_irqrestore(&priv->lock, flags); | |
2034 | ||
2035 | hdr_len = ieee80211_get_hdrlen(fc); | |
6440adb5 BC |
2036 | |
2037 | /* Find (or create) index into station table for destination station */ | |
bb8c093b | 2038 | sta_id = iwl4965_get_sta_id(priv, hdr); |
b481de9c | 2039 | if (sta_id == IWL_INVALID_STATION) { |
0795af57 JP |
2040 | DECLARE_MAC_BUF(mac); |
2041 | ||
2042 | IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n", | |
2043 | print_mac(mac, hdr->addr1)); | |
b481de9c ZY |
2044 | goto drop; |
2045 | } | |
2046 | ||
2047 | IWL_DEBUG_RATE("station Id %d\n", sta_id); | |
2048 | ||
2049 | qc = ieee80211_get_qos_ctrl(hdr); | |
2050 | if (qc) { | |
2051 | u8 tid = (u8)(le16_to_cpu(*qc) & 0xf); | |
2052 | seq_number = priv->stations[sta_id].tid[tid].seq_number & | |
2053 | IEEE80211_SCTL_SEQ; | |
2054 | hdr->seq_ctrl = cpu_to_le16(seq_number) | | |
2055 | (hdr->seq_ctrl & | |
2056 | __constant_cpu_to_le16(IEEE80211_SCTL_FRAG)); | |
2057 | seq_number += 0x10; | |
c8b0e6e1 | 2058 | #ifdef CONFIG_IWL4965_HT |
b481de9c | 2059 | /* aggregation is on for this <sta,tid> */ |
fe01b477 | 2060 | if (ctl->flags & IEEE80211_TXCTL_AMPDU) |
b481de9c | 2061 | txq_id = priv->stations[sta_id].tid[tid].agg.txq_id; |
fe01b477 | 2062 | priv->stations[sta_id].tid[tid].tfds_in_queue++; |
c8b0e6e1 | 2063 | #endif /* CONFIG_IWL4965_HT */ |
b481de9c | 2064 | } |
6440adb5 BC |
2065 | |
2066 | /* Descriptor for chosen Tx queue */ | |
b481de9c ZY |
2067 | txq = &priv->txq[txq_id]; |
2068 | q = &txq->q; | |
2069 | ||
2070 | spin_lock_irqsave(&priv->lock, flags); | |
2071 | ||
6440adb5 | 2072 | /* Set up first empty TFD within this queue's circular TFD buffer */ |
fc4b6853 | 2073 | tfd = &txq->bd[q->write_ptr]; |
b481de9c ZY |
2074 | memset(tfd, 0, sizeof(*tfd)); |
2075 | control_flags = (u32 *) tfd; | |
fc4b6853 | 2076 | idx = get_cmd_index(q, q->write_ptr, 0); |
b481de9c | 2077 | |
6440adb5 | 2078 | /* Set up driver data for this TFD */ |
bb8c093b | 2079 | memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info)); |
fc4b6853 TW |
2080 | txq->txb[q->write_ptr].skb[0] = skb; |
2081 | memcpy(&(txq->txb[q->write_ptr].status.control), | |
b481de9c | 2082 | ctl, sizeof(struct ieee80211_tx_control)); |
6440adb5 BC |
2083 | |
2084 | /* Set up first empty entry in queue's array of Tx/cmd buffers */ | |
b481de9c ZY |
2085 | out_cmd = &txq->cmd[idx]; |
2086 | memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr)); | |
2087 | memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx)); | |
6440adb5 BC |
2088 | |
2089 | /* | |
2090 | * Set up the Tx-command (not MAC!) header. | |
2091 | * Store the chosen Tx queue and TFD index within the sequence field; | |
2092 | * after Tx, uCode's Tx response will return this value so driver can | |
2093 | * locate the frame within the tx queue and do post-tx processing. | |
2094 | */ | |
b481de9c ZY |
2095 | out_cmd->hdr.cmd = REPLY_TX; |
2096 | out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) | | |
fc4b6853 | 2097 | INDEX_TO_SEQ(q->write_ptr))); |
6440adb5 BC |
2098 | |
2099 | /* Copy MAC header from skb into command buffer */ | |
b481de9c ZY |
2100 | memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len); |
2101 | ||
6440adb5 BC |
2102 | /* |
2103 | * Use the first empty entry in this queue's command buffer array | |
2104 | * to contain the Tx command and MAC header concatenated together | |
2105 | * (payload data will be in another buffer). | |
2106 | * Size of this varies, due to varying MAC header length. | |
2107 | * If end is not dword aligned, we'll have 2 extra bytes at the end | |
2108 | * of the MAC header (device reads on dword boundaries). | |
2109 | * We'll tell device about this padding later. | |
2110 | */ | |
5425e490 | 2111 | len = priv->hw_params.tx_cmd_len + |
857485c0 | 2112 | sizeof(struct iwl_cmd_header) + hdr_len; |
b481de9c ZY |
2113 | |
2114 | len_org = len; | |
2115 | len = (len + 3) & ~3; | |
2116 | ||
2117 | if (len_org != len) | |
2118 | len_org = 1; | |
2119 | else | |
2120 | len_org = 0; | |
2121 | ||
6440adb5 BC |
2122 | /* Physical address of this Tx command's header (not MAC header!), |
2123 | * within command buffer array. */ | |
857485c0 TW |
2124 | txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl_cmd) * idx + |
2125 | offsetof(struct iwl_cmd, hdr); | |
b481de9c | 2126 | |
6440adb5 BC |
2127 | /* Add buffer containing Tx command and MAC(!) header to TFD's |
2128 | * first entry */ | |
bb8c093b | 2129 | iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len); |
b481de9c ZY |
2130 | |
2131 | if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT)) | |
deb09c43 | 2132 | iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, sta_id); |
b481de9c | 2133 | |
6440adb5 BC |
2134 | /* Set up TFD's 2nd entry to point directly to remainder of skb, |
2135 | * if any (802.11 null frames have no payload). */ | |
b481de9c ZY |
2136 | len = skb->len - hdr_len; |
2137 | if (len) { | |
2138 | phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len, | |
2139 | len, PCI_DMA_TODEVICE); | |
bb8c093b | 2140 | iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len); |
b481de9c ZY |
2141 | } |
2142 | ||
6440adb5 | 2143 | /* Tell 4965 about any 2-byte padding after MAC header */ |
b481de9c ZY |
2144 | if (len_org) |
2145 | out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK; | |
2146 | ||
6440adb5 | 2147 | /* Total # bytes to be transmitted */ |
b481de9c ZY |
2148 | len = (u16)skb->len; |
2149 | out_cmd->cmd.tx.len = cpu_to_le16(len); | |
2150 | ||
2151 | /* TODO need this for burst mode later on */ | |
bb8c093b | 2152 | iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id); |
b481de9c ZY |
2153 | |
2154 | /* set is_hcca to 0; it probably will never be implemented */ | |
bb8c093b | 2155 | iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0); |
b481de9c | 2156 | |
19758bef TW |
2157 | iwl_update_tx_stats(priv, fc, len); |
2158 | ||
857485c0 | 2159 | scratch_phys = txcmd_phys + sizeof(struct iwl_cmd_header) + |
87e4f7df TW |
2160 | offsetof(struct iwl4965_tx_cmd, scratch); |
2161 | out_cmd->cmd.tx.dram_lsb_ptr = cpu_to_le32(scratch_phys); | |
2162 | out_cmd->cmd.tx.dram_msb_ptr = iwl_get_dma_hi_address(scratch_phys); | |
2163 | ||
b481de9c ZY |
2164 | if (!ieee80211_get_morefrag(hdr)) { |
2165 | txq->need_update = 1; | |
2166 | if (qc) { | |
2167 | u8 tid = (u8)(le16_to_cpu(*qc) & 0xf); | |
2168 | priv->stations[sta_id].tid[tid].seq_number = seq_number; | |
2169 | } | |
2170 | } else { | |
2171 | wait_write_ptr = 1; | |
2172 | txq->need_update = 0; | |
2173 | } | |
2174 | ||
0a6857e7 | 2175 | iwl_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload, |
b481de9c ZY |
2176 | sizeof(out_cmd->cmd.tx)); |
2177 | ||
0a6857e7 | 2178 | iwl_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr, |
b481de9c ZY |
2179 | ieee80211_get_hdrlen(fc)); |
2180 | ||
6440adb5 | 2181 | /* Set up entry for this TFD in Tx byte-count array */ |
e2a722eb | 2182 | priv->cfg->ops->lib->txq_update_byte_cnt_tbl(priv, txq, len); |
b481de9c | 2183 | |
6440adb5 | 2184 | /* Tell device the write index *just past* this latest filled TFD */ |
c54b679d | 2185 | q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd); |
bb8c093b | 2186 | rc = iwl4965_tx_queue_update_write_ptr(priv, txq); |
b481de9c ZY |
2187 | spin_unlock_irqrestore(&priv->lock, flags); |
2188 | ||
2189 | if (rc) | |
2190 | return rc; | |
2191 | ||
bb8c093b | 2192 | if ((iwl4965_queue_space(q) < q->high_mark) |
b481de9c ZY |
2193 | && priv->mac80211_registered) { |
2194 | if (wait_write_ptr) { | |
2195 | spin_lock_irqsave(&priv->lock, flags); | |
2196 | txq->need_update = 1; | |
bb8c093b | 2197 | iwl4965_tx_queue_update_write_ptr(priv, txq); |
b481de9c ZY |
2198 | spin_unlock_irqrestore(&priv->lock, flags); |
2199 | } | |
2200 | ||
2201 | ieee80211_stop_queue(priv->hw, ctl->queue); | |
2202 | } | |
2203 | ||
2204 | return 0; | |
2205 | ||
2206 | drop_unlock: | |
2207 | spin_unlock_irqrestore(&priv->lock, flags); | |
2208 | drop: | |
2209 | return -1; | |
2210 | } | |
2211 | ||
c79dd5b5 | 2212 | static void iwl4965_set_rate(struct iwl_priv *priv) |
b481de9c | 2213 | { |
8318d78a | 2214 | const struct ieee80211_supported_band *hw = NULL; |
b481de9c ZY |
2215 | struct ieee80211_rate *rate; |
2216 | int i; | |
2217 | ||
d1141dfb | 2218 | hw = iwl_get_hw_mode(priv, priv->band); |
c4ba9621 SA |
2219 | if (!hw) { |
2220 | IWL_ERROR("Failed to set rate: unable to get hw mode\n"); | |
2221 | return; | |
2222 | } | |
b481de9c ZY |
2223 | |
2224 | priv->active_rate = 0; | |
2225 | priv->active_rate_basic = 0; | |
2226 | ||
8318d78a JB |
2227 | for (i = 0; i < hw->n_bitrates; i++) { |
2228 | rate = &(hw->bitrates[i]); | |
2229 | if (rate->hw_value < IWL_RATE_COUNT) | |
2230 | priv->active_rate |= (1 << rate->hw_value); | |
b481de9c ZY |
2231 | } |
2232 | ||
2233 | IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n", | |
2234 | priv->active_rate, priv->active_rate_basic); | |
2235 | ||
2236 | /* | |
2237 | * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK) | |
2238 | * otherwise set it to the default of all CCK rates and 6, 12, 24 for | |
2239 | * OFDM | |
2240 | */ | |
2241 | if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK) | |
2242 | priv->staging_rxon.cck_basic_rates = | |
2243 | ((priv->active_rate_basic & | |
2244 | IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF; | |
2245 | else | |
2246 | priv->staging_rxon.cck_basic_rates = | |
2247 | (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF; | |
2248 | ||
2249 | if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK) | |
2250 | priv->staging_rxon.ofdm_basic_rates = | |
2251 | ((priv->active_rate_basic & | |
2252 | (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >> | |
2253 | IWL_FIRST_OFDM_RATE) & 0xFF; | |
2254 | else | |
2255 | priv->staging_rxon.ofdm_basic_rates = | |
2256 | (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF; | |
2257 | } | |
2258 | ||
ad97edd2 | 2259 | void iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio) |
b481de9c ZY |
2260 | { |
2261 | unsigned long flags; | |
2262 | ||
2263 | if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status)) | |
2264 | return; | |
2265 | ||
2266 | IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n", | |
2267 | disable_radio ? "OFF" : "ON"); | |
2268 | ||
2269 | if (disable_radio) { | |
bb8c093b | 2270 | iwl4965_scan_cancel(priv); |
b481de9c ZY |
2271 | /* FIXME: This is a workaround for AP */ |
2272 | if (priv->iw_mode != IEEE80211_IF_TYPE_AP) { | |
2273 | spin_lock_irqsave(&priv->lock, flags); | |
3395f6e9 | 2274 | iwl_write32(priv, CSR_UCODE_DRV_GP1_SET, |
b481de9c ZY |
2275 | CSR_UCODE_SW_BIT_RFKILL); |
2276 | spin_unlock_irqrestore(&priv->lock, flags); | |
ad97edd2 | 2277 | /* call the host command only if no hw rf-kill set */ |
59003835 MA |
2278 | if (!test_bit(STATUS_RF_KILL_HW, &priv->status) && |
2279 | iwl_is_ready(priv)) | |
ad97edd2 MA |
2280 | iwl4965_send_card_state(priv, |
2281 | CARD_STATE_CMD_DISABLE, | |
2282 | 0); | |
b481de9c | 2283 | set_bit(STATUS_RF_KILL_SW, &priv->status); |
ad97edd2 MA |
2284 | |
2285 | /* make sure mac80211 stop sending Tx frame */ | |
2286 | if (priv->mac80211_registered) | |
2287 | ieee80211_stop_queues(priv->hw); | |
b481de9c ZY |
2288 | } |
2289 | return; | |
2290 | } | |
2291 | ||
2292 | spin_lock_irqsave(&priv->lock, flags); | |
3395f6e9 | 2293 | iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); |
b481de9c ZY |
2294 | |
2295 | clear_bit(STATUS_RF_KILL_SW, &priv->status); | |
2296 | spin_unlock_irqrestore(&priv->lock, flags); | |
2297 | ||
2298 | /* wake up ucode */ | |
2299 | msleep(10); | |
2300 | ||
2301 | spin_lock_irqsave(&priv->lock, flags); | |
3395f6e9 TW |
2302 | iwl_read32(priv, CSR_UCODE_DRV_GP1); |
2303 | if (!iwl_grab_nic_access(priv)) | |
2304 | iwl_release_nic_access(priv); | |
b481de9c ZY |
2305 | spin_unlock_irqrestore(&priv->lock, flags); |
2306 | ||
2307 | if (test_bit(STATUS_RF_KILL_HW, &priv->status)) { | |
2308 | IWL_DEBUG_RF_KILL("Can not turn radio back on - " | |
2309 | "disabled by HW switch\n"); | |
2310 | return; | |
2311 | } | |
2312 | ||
2313 | queue_work(priv->workqueue, &priv->restart); | |
2314 | return; | |
2315 | } | |
2316 | ||
b481de9c ZY |
2317 | #define IWL_PACKET_RETRY_TIME HZ |
2318 | ||
c79dd5b5 | 2319 | int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header) |
b481de9c ZY |
2320 | { |
2321 | u16 sc = le16_to_cpu(header->seq_ctrl); | |
2322 | u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4; | |
2323 | u16 frag = sc & IEEE80211_SCTL_FRAG; | |
2324 | u16 *last_seq, *last_frag; | |
2325 | unsigned long *last_time; | |
2326 | ||
2327 | switch (priv->iw_mode) { | |
2328 | case IEEE80211_IF_TYPE_IBSS:{ | |
2329 | struct list_head *p; | |
bb8c093b | 2330 | struct iwl4965_ibss_seq *entry = NULL; |
b481de9c ZY |
2331 | u8 *mac = header->addr2; |
2332 | int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1); | |
2333 | ||
2334 | __list_for_each(p, &priv->ibss_mac_hash[index]) { | |
bb8c093b | 2335 | entry = list_entry(p, struct iwl4965_ibss_seq, list); |
b481de9c ZY |
2336 | if (!compare_ether_addr(entry->mac, mac)) |
2337 | break; | |
2338 | } | |
2339 | if (p == &priv->ibss_mac_hash[index]) { | |
2340 | entry = kzalloc(sizeof(*entry), GFP_ATOMIC); | |
2341 | if (!entry) { | |
bc434dd2 | 2342 | IWL_ERROR("Cannot malloc new mac entry\n"); |
b481de9c ZY |
2343 | return 0; |
2344 | } | |
2345 | memcpy(entry->mac, mac, ETH_ALEN); | |
2346 | entry->seq_num = seq; | |
2347 | entry->frag_num = frag; | |
2348 | entry->packet_time = jiffies; | |
bc434dd2 | 2349 | list_add(&entry->list, &priv->ibss_mac_hash[index]); |
b481de9c ZY |
2350 | return 0; |
2351 | } | |
2352 | last_seq = &entry->seq_num; | |
2353 | last_frag = &entry->frag_num; | |
2354 | last_time = &entry->packet_time; | |
2355 | break; | |
2356 | } | |
2357 | case IEEE80211_IF_TYPE_STA: | |
2358 | last_seq = &priv->last_seq_num; | |
2359 | last_frag = &priv->last_frag_num; | |
2360 | last_time = &priv->last_packet_time; | |
2361 | break; | |
2362 | default: | |
2363 | return 0; | |
2364 | } | |
2365 | if ((*last_seq == seq) && | |
2366 | time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) { | |
2367 | if (*last_frag == frag) | |
2368 | goto drop; | |
2369 | if (*last_frag + 1 != frag) | |
2370 | /* out-of-order fragment */ | |
2371 | goto drop; | |
2372 | } else | |
2373 | *last_seq = seq; | |
2374 | ||
2375 | *last_frag = frag; | |
2376 | *last_time = jiffies; | |
2377 | return 0; | |
2378 | ||
2379 | drop: | |
2380 | return 1; | |
2381 | } | |
2382 | ||
c8b0e6e1 | 2383 | #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT |
b481de9c ZY |
2384 | |
2385 | #include "iwl-spectrum.h" | |
2386 | ||
2387 | #define BEACON_TIME_MASK_LOW 0x00FFFFFF | |
2388 | #define BEACON_TIME_MASK_HIGH 0xFF000000 | |
2389 | #define TIME_UNIT 1024 | |
2390 | ||
2391 | /* | |
2392 | * extended beacon time format | |
2393 | * time in usec will be changed into a 32-bit value in 8:24 format | |
2394 | * the high 1 byte is the beacon counts | |
2395 | * the lower 3 bytes is the time in usec within one beacon interval | |
2396 | */ | |
2397 | ||
bb8c093b | 2398 | static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval) |
b481de9c ZY |
2399 | { |
2400 | u32 quot; | |
2401 | u32 rem; | |
2402 | u32 interval = beacon_interval * 1024; | |
2403 | ||
2404 | if (!interval || !usec) | |
2405 | return 0; | |
2406 | ||
2407 | quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24); | |
2408 | rem = (usec % interval) & BEACON_TIME_MASK_LOW; | |
2409 | ||
2410 | return (quot << 24) + rem; | |
2411 | } | |
2412 | ||
2413 | /* base is usually what we get from ucode with each received frame, | |
2414 | * the same as HW timer counter counting down | |
2415 | */ | |
2416 | ||
bb8c093b | 2417 | static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval) |
b481de9c ZY |
2418 | { |
2419 | u32 base_low = base & BEACON_TIME_MASK_LOW; | |
2420 | u32 addon_low = addon & BEACON_TIME_MASK_LOW; | |
2421 | u32 interval = beacon_interval * TIME_UNIT; | |
2422 | u32 res = (base & BEACON_TIME_MASK_HIGH) + | |
2423 | (addon & BEACON_TIME_MASK_HIGH); | |
2424 | ||
2425 | if (base_low > addon_low) | |
2426 | res += base_low - addon_low; | |
2427 | else if (base_low < addon_low) { | |
2428 | res += interval + base_low - addon_low; | |
2429 | res += (1 << 24); | |
2430 | } else | |
2431 | res += (1 << 24); | |
2432 | ||
2433 | return cpu_to_le32(res); | |
2434 | } | |
2435 | ||
c79dd5b5 | 2436 | static int iwl4965_get_measurement(struct iwl_priv *priv, |
b481de9c ZY |
2437 | struct ieee80211_measurement_params *params, |
2438 | u8 type) | |
2439 | { | |
bb8c093b CH |
2440 | struct iwl4965_spectrum_cmd spectrum; |
2441 | struct iwl4965_rx_packet *res; | |
857485c0 | 2442 | struct iwl_host_cmd cmd = { |
b481de9c ZY |
2443 | .id = REPLY_SPECTRUM_MEASUREMENT_CMD, |
2444 | .data = (void *)&spectrum, | |
2445 | .meta.flags = CMD_WANT_SKB, | |
2446 | }; | |
2447 | u32 add_time = le64_to_cpu(params->start_time); | |
2448 | int rc; | |
2449 | int spectrum_resp_status; | |
2450 | int duration = le16_to_cpu(params->duration); | |
2451 | ||
3109ece1 | 2452 | if (iwl_is_associated(priv)) |
b481de9c | 2453 | add_time = |
bb8c093b | 2454 | iwl4965_usecs_to_beacons( |
b481de9c ZY |
2455 | le64_to_cpu(params->start_time) - priv->last_tsf, |
2456 | le16_to_cpu(priv->rxon_timing.beacon_interval)); | |
2457 | ||
2458 | memset(&spectrum, 0, sizeof(spectrum)); | |
2459 | ||
2460 | spectrum.channel_count = cpu_to_le16(1); | |
2461 | spectrum.flags = | |
2462 | RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK; | |
2463 | spectrum.filter_flags = MEASUREMENT_FILTER_FLAG; | |
2464 | cmd.len = sizeof(spectrum); | |
2465 | spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len)); | |
2466 | ||
3109ece1 | 2467 | if (iwl_is_associated(priv)) |
b481de9c | 2468 | spectrum.start_time = |
bb8c093b | 2469 | iwl4965_add_beacon_time(priv->last_beacon_time, |
b481de9c ZY |
2470 | add_time, |
2471 | le16_to_cpu(priv->rxon_timing.beacon_interval)); | |
2472 | else | |
2473 | spectrum.start_time = 0; | |
2474 | ||
2475 | spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT); | |
2476 | spectrum.channels[0].channel = params->channel; | |
2477 | spectrum.channels[0].type = type; | |
2478 | if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK) | |
2479 | spectrum.flags |= RXON_FLG_BAND_24G_MSK | | |
2480 | RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK; | |
2481 | ||
857485c0 | 2482 | rc = iwl_send_cmd_sync(priv, &cmd); |
b481de9c ZY |
2483 | if (rc) |
2484 | return rc; | |
2485 | ||
bb8c093b | 2486 | res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data; |
b481de9c ZY |
2487 | if (res->hdr.flags & IWL_CMD_FAILED_MSK) { |
2488 | IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n"); | |
2489 | rc = -EIO; | |
2490 | } | |
2491 | ||
2492 | spectrum_resp_status = le16_to_cpu(res->u.spectrum.status); | |
2493 | switch (spectrum_resp_status) { | |
2494 | case 0: /* Command will be handled */ | |
2495 | if (res->u.spectrum.id != 0xff) { | |
2496 | IWL_DEBUG_INFO | |
2497 | ("Replaced existing measurement: %d\n", | |
2498 | res->u.spectrum.id); | |
2499 | priv->measurement_status &= ~MEASUREMENT_READY; | |
2500 | } | |
2501 | priv->measurement_status |= MEASUREMENT_ACTIVE; | |
2502 | rc = 0; | |
2503 | break; | |
2504 | ||
2505 | case 1: /* Command will not be handled */ | |
2506 | rc = -EAGAIN; | |
2507 | break; | |
2508 | } | |
2509 | ||
2510 | dev_kfree_skb_any(cmd.meta.u.skb); | |
2511 | ||
2512 | return rc; | |
2513 | } | |
2514 | #endif | |
2515 | ||
c79dd5b5 | 2516 | static void iwl4965_txstatus_to_ieee(struct iwl_priv *priv, |
bb8c093b | 2517 | struct iwl4965_tx_info *tx_sta) |
b481de9c ZY |
2518 | { |
2519 | ||
2520 | tx_sta->status.ack_signal = 0; | |
2521 | tx_sta->status.excessive_retries = 0; | |
2522 | tx_sta->status.queue_length = 0; | |
2523 | tx_sta->status.queue_number = 0; | |
2524 | ||
2525 | if (in_interrupt()) | |
2526 | ieee80211_tx_status_irqsafe(priv->hw, | |
2527 | tx_sta->skb[0], &(tx_sta->status)); | |
2528 | else | |
2529 | ieee80211_tx_status(priv->hw, | |
2530 | tx_sta->skb[0], &(tx_sta->status)); | |
2531 | ||
2532 | tx_sta->skb[0] = NULL; | |
2533 | } | |
2534 | ||
2535 | /** | |
6440adb5 | 2536 | * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd |
b481de9c | 2537 | * |
6440adb5 BC |
2538 | * When FW advances 'R' index, all entries between old and new 'R' index |
2539 | * need to be reclaimed. As result, some free space forms. If there is | |
2540 | * enough free space (> low mark), wake the stack that feeds us. | |
b481de9c | 2541 | */ |
c79dd5b5 | 2542 | int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index) |
b481de9c | 2543 | { |
bb8c093b CH |
2544 | struct iwl4965_tx_queue *txq = &priv->txq[txq_id]; |
2545 | struct iwl4965_queue *q = &txq->q; | |
b481de9c ZY |
2546 | int nfreed = 0; |
2547 | ||
2548 | if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) { | |
2549 | IWL_ERROR("Read index for DMA queue txq id (%d), index %d, " | |
2550 | "is out of range [0-%d] %d %d.\n", txq_id, | |
fc4b6853 | 2551 | index, q->n_bd, q->write_ptr, q->read_ptr); |
b481de9c ZY |
2552 | return 0; |
2553 | } | |
2554 | ||
c54b679d | 2555 | for (index = iwl_queue_inc_wrap(index, q->n_bd); |
fc4b6853 | 2556 | q->read_ptr != index; |
c54b679d | 2557 | q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) { |
b481de9c | 2558 | if (txq_id != IWL_CMD_QUEUE_NUM) { |
bb8c093b | 2559 | iwl4965_txstatus_to_ieee(priv, |
fc4b6853 | 2560 | &(txq->txb[txq->q.read_ptr])); |
bb8c093b | 2561 | iwl4965_hw_txq_free_tfd(priv, txq); |
b481de9c ZY |
2562 | } else if (nfreed > 1) { |
2563 | IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index, | |
fc4b6853 | 2564 | q->write_ptr, q->read_ptr); |
b481de9c ZY |
2565 | queue_work(priv->workqueue, &priv->restart); |
2566 | } | |
2567 | nfreed++; | |
2568 | } | |
2569 | ||
fe01b477 | 2570 | /* if (iwl4965_queue_space(q) > q->low_mark && (txq_id >= 0) && |
b481de9c ZY |
2571 | (txq_id != IWL_CMD_QUEUE_NUM) && |
2572 | priv->mac80211_registered) | |
fe01b477 | 2573 | ieee80211_wake_queue(priv->hw, txq_id); */ |
b481de9c ZY |
2574 | |
2575 | ||
2576 | return nfreed; | |
2577 | } | |
2578 | ||
bb8c093b | 2579 | static int iwl4965_is_tx_success(u32 status) |
b481de9c ZY |
2580 | { |
2581 | status &= TX_STATUS_MSK; | |
2582 | return (status == TX_STATUS_SUCCESS) | |
2583 | || (status == TX_STATUS_DIRECT_DONE); | |
2584 | } | |
2585 | ||
2586 | /****************************************************************************** | |
2587 | * | |
2588 | * Generic RX handler implementations | |
2589 | * | |
2590 | ******************************************************************************/ | |
c8b0e6e1 | 2591 | #ifdef CONFIG_IWL4965_HT |
b481de9c | 2592 | |
c79dd5b5 | 2593 | static inline int iwl4965_get_ra_sta_id(struct iwl_priv *priv, |
b481de9c ZY |
2594 | struct ieee80211_hdr *hdr) |
2595 | { | |
2596 | if (priv->iw_mode == IEEE80211_IF_TYPE_STA) | |
2597 | return IWL_AP_ID; | |
2598 | else { | |
2599 | u8 *da = ieee80211_get_DA(hdr); | |
947b13a7 | 2600 | return iwl_find_station(priv, da); |
b481de9c ZY |
2601 | } |
2602 | } | |
2603 | ||
bb8c093b | 2604 | static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr( |
c79dd5b5 | 2605 | struct iwl_priv *priv, int txq_id, int idx) |
b481de9c ZY |
2606 | { |
2607 | if (priv->txq[txq_id].txb[idx].skb[0]) | |
2608 | return (struct ieee80211_hdr *)priv->txq[txq_id]. | |
2609 | txb[idx].skb[0]->data; | |
2610 | return NULL; | |
2611 | } | |
2612 | ||
bb8c093b | 2613 | static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp) |
b481de9c ZY |
2614 | { |
2615 | __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status + | |
2616 | tx_resp->frame_count); | |
2617 | return le32_to_cpu(*scd_ssn) & MAX_SN; | |
2618 | ||
2619 | } | |
6440adb5 BC |
2620 | |
2621 | /** | |
2622 | * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue | |
2623 | */ | |
c79dd5b5 | 2624 | static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv, |
bb8c093b | 2625 | struct iwl4965_ht_agg *agg, |
fe01b477 | 2626 | struct iwl4965_tx_resp_agg *tx_resp, |
b481de9c ZY |
2627 | u16 start_idx) |
2628 | { | |
fe01b477 RR |
2629 | u16 status; |
2630 | struct agg_tx_status *frame_status = &tx_resp->status; | |
b481de9c ZY |
2631 | struct ieee80211_tx_status *tx_status = NULL; |
2632 | struct ieee80211_hdr *hdr = NULL; | |
2633 | int i, sh; | |
2634 | int txq_id, idx; | |
2635 | u16 seq; | |
2636 | ||
2637 | if (agg->wait_for_ba) | |
6440adb5 | 2638 | IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n"); |
b481de9c ZY |
2639 | |
2640 | agg->frame_count = tx_resp->frame_count; | |
2641 | agg->start_idx = start_idx; | |
2642 | agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags); | |
fe01b477 | 2643 | agg->bitmap = 0; |
b481de9c | 2644 | |
6440adb5 | 2645 | /* # frames attempted by Tx command */ |
b481de9c | 2646 | if (agg->frame_count == 1) { |
6440adb5 | 2647 | /* Only one frame was attempted; no block-ack will arrive */ |
fe01b477 RR |
2648 | status = le16_to_cpu(frame_status[0].status); |
2649 | seq = le16_to_cpu(frame_status[0].sequence); | |
2650 | idx = SEQ_TO_INDEX(seq); | |
2651 | txq_id = SEQ_TO_QUEUE(seq); | |
b481de9c | 2652 | |
b481de9c | 2653 | /* FIXME: code repetition */ |
fe01b477 RR |
2654 | IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n", |
2655 | agg->frame_count, agg->start_idx, idx); | |
b481de9c | 2656 | |
fe01b477 | 2657 | tx_status = &(priv->txq[txq_id].txb[idx].status); |
b481de9c ZY |
2658 | tx_status->retry_count = tx_resp->failure_frame; |
2659 | tx_status->queue_number = status & 0xff; | |
fe01b477 RR |
2660 | tx_status->queue_length = tx_resp->failure_rts; |
2661 | tx_status->control.flags &= ~IEEE80211_TXCTL_AMPDU; | |
bb8c093b | 2662 | tx_status->flags = iwl4965_is_tx_success(status)? |
b481de9c | 2663 | IEEE80211_TX_STATUS_ACK : 0; |
4c424e4c RR |
2664 | iwl4965_hwrate_to_tx_control(priv, |
2665 | le32_to_cpu(tx_resp->rate_n_flags), | |
2666 | &tx_status->control); | |
b481de9c ZY |
2667 | /* FIXME: code repetition end */ |
2668 | ||
2669 | IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n", | |
2670 | status & 0xff, tx_resp->failure_frame); | |
2671 | IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n", | |
bb8c093b | 2672 | iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags)); |
b481de9c ZY |
2673 | |
2674 | agg->wait_for_ba = 0; | |
2675 | } else { | |
6440adb5 | 2676 | /* Two or more frames were attempted; expect block-ack */ |
b481de9c ZY |
2677 | u64 bitmap = 0; |
2678 | int start = agg->start_idx; | |
2679 | ||
6440adb5 | 2680 | /* Construct bit-map of pending frames within Tx window */ |
b481de9c ZY |
2681 | for (i = 0; i < agg->frame_count; i++) { |
2682 | u16 sc; | |
fe01b477 RR |
2683 | status = le16_to_cpu(frame_status[i].status); |
2684 | seq = le16_to_cpu(frame_status[i].sequence); | |
b481de9c ZY |
2685 | idx = SEQ_TO_INDEX(seq); |
2686 | txq_id = SEQ_TO_QUEUE(seq); | |
2687 | ||
2688 | if (status & (AGG_TX_STATE_FEW_BYTES_MSK | | |
2689 | AGG_TX_STATE_ABORT_MSK)) | |
2690 | continue; | |
2691 | ||
2692 | IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n", | |
2693 | agg->frame_count, txq_id, idx); | |
2694 | ||
bb8c093b | 2695 | hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx); |
b481de9c ZY |
2696 | |
2697 | sc = le16_to_cpu(hdr->seq_ctrl); | |
2698 | if (idx != (SEQ_TO_SN(sc) & 0xff)) { | |
2699 | IWL_ERROR("BUG_ON idx doesn't match seq control" | |
2700 | " idx=%d, seq_idx=%d, seq=%d\n", | |
2701 | idx, SEQ_TO_SN(sc), | |
2702 | hdr->seq_ctrl); | |
2703 | return -1; | |
2704 | } | |
2705 | ||
2706 | IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n", | |
2707 | i, idx, SEQ_TO_SN(sc)); | |
2708 | ||
2709 | sh = idx - start; | |
2710 | if (sh > 64) { | |
2711 | sh = (start - idx) + 0xff; | |
2712 | bitmap = bitmap << sh; | |
2713 | sh = 0; | |
2714 | start = idx; | |
2715 | } else if (sh < -64) | |
2716 | sh = 0xff - (start - idx); | |
2717 | else if (sh < 0) { | |
2718 | sh = start - idx; | |
2719 | start = idx; | |
2720 | bitmap = bitmap << sh; | |
2721 | sh = 0; | |
2722 | } | |
2723 | bitmap |= (1 << sh); | |
2724 | IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n", | |
2725 | start, (u32)(bitmap & 0xFFFFFFFF)); | |
2726 | } | |
2727 | ||
fe01b477 | 2728 | agg->bitmap = bitmap; |
b481de9c ZY |
2729 | agg->start_idx = start; |
2730 | agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags); | |
fe01b477 | 2731 | IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n", |
b481de9c | 2732 | agg->frame_count, agg->start_idx, |
06501d29 | 2733 | (unsigned long long)agg->bitmap); |
b481de9c ZY |
2734 | |
2735 | if (bitmap) | |
2736 | agg->wait_for_ba = 1; | |
2737 | } | |
2738 | return 0; | |
2739 | } | |
2740 | #endif | |
b481de9c | 2741 | |
6440adb5 BC |
2742 | /** |
2743 | * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response | |
2744 | */ | |
c79dd5b5 | 2745 | static void iwl4965_rx_reply_tx(struct iwl_priv *priv, |
bb8c093b | 2746 | struct iwl4965_rx_mem_buffer *rxb) |
b481de9c | 2747 | { |
bb8c093b | 2748 | struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data; |
b481de9c ZY |
2749 | u16 sequence = le16_to_cpu(pkt->hdr.sequence); |
2750 | int txq_id = SEQ_TO_QUEUE(sequence); | |
2751 | int index = SEQ_TO_INDEX(sequence); | |
bb8c093b | 2752 | struct iwl4965_tx_queue *txq = &priv->txq[txq_id]; |
b481de9c | 2753 | struct ieee80211_tx_status *tx_status; |
bb8c093b | 2754 | struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0]; |
b481de9c | 2755 | u32 status = le32_to_cpu(tx_resp->status); |
c8b0e6e1 | 2756 | #ifdef CONFIG_IWL4965_HT |
fe01b477 RR |
2757 | int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION; |
2758 | struct ieee80211_hdr *hdr; | |
2759 | __le16 *qc; | |
b481de9c ZY |
2760 | #endif |
2761 | ||
2762 | if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) { | |
2763 | IWL_ERROR("Read index for DMA queue txq_id (%d) index %d " | |
2764 | "is out of range [0-%d] %d %d\n", txq_id, | |
fc4b6853 TW |
2765 | index, txq->q.n_bd, txq->q.write_ptr, |
2766 | txq->q.read_ptr); | |
b481de9c ZY |
2767 | return; |
2768 | } | |
2769 | ||
c8b0e6e1 | 2770 | #ifdef CONFIG_IWL4965_HT |
fe01b477 RR |
2771 | hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index); |
2772 | qc = ieee80211_get_qos_ctrl(hdr); | |
2773 | ||
2774 | if (qc) | |
2775 | tid = le16_to_cpu(*qc) & 0xf; | |
2776 | ||
2777 | sta_id = iwl4965_get_ra_sta_id(priv, hdr); | |
2778 | if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) { | |
2779 | IWL_ERROR("Station not known\n"); | |
2780 | return; | |
2781 | } | |
2782 | ||
b481de9c | 2783 | if (txq->sched_retry) { |
bb8c093b | 2784 | const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp); |
bb8c093b | 2785 | struct iwl4965_ht_agg *agg = NULL; |
b481de9c | 2786 | |
fe01b477 | 2787 | if (!qc) |
b481de9c | 2788 | return; |
b481de9c ZY |
2789 | |
2790 | agg = &priv->stations[sta_id].tid[tid].agg; | |
2791 | ||
fe01b477 RR |
2792 | iwl4965_tx_status_reply_tx(priv, agg, |
2793 | (struct iwl4965_tx_resp_agg *)tx_resp, index); | |
b481de9c ZY |
2794 | |
2795 | if ((tx_resp->frame_count == 1) && | |
bb8c093b | 2796 | !iwl4965_is_tx_success(status)) { |
b481de9c ZY |
2797 | /* TODO: send BAR */ |
2798 | } | |
2799 | ||
fe01b477 RR |
2800 | if (txq->q.read_ptr != (scd_ssn & 0xff)) { |
2801 | int freed; | |
c54b679d | 2802 | index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd); |
b481de9c ZY |
2803 | IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn " |
2804 | "%d index %d\n", scd_ssn , index); | |
fe01b477 RR |
2805 | freed = iwl4965_tx_queue_reclaim(priv, txq_id, index); |
2806 | priv->stations[sta_id].tid[tid].tfds_in_queue -= freed; | |
2807 | ||
2808 | if (iwl4965_queue_space(&txq->q) > txq->q.low_mark && | |
2809 | txq_id >= 0 && priv->mac80211_registered && | |
2810 | agg->state != IWL_EMPTYING_HW_QUEUE_DELBA) | |
2811 | ieee80211_wake_queue(priv->hw, txq_id); | |
2812 | ||
2813 | iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id); | |
b481de9c ZY |
2814 | } |
2815 | } else { | |
c8b0e6e1 | 2816 | #endif /* CONFIG_IWL4965_HT */ |
fc4b6853 | 2817 | tx_status = &(txq->txb[txq->q.read_ptr].status); |
b481de9c ZY |
2818 | |
2819 | tx_status->retry_count = tx_resp->failure_frame; | |
2820 | tx_status->queue_number = status; | |
2821 | tx_status->queue_length = tx_resp->bt_kill_count; | |
2822 | tx_status->queue_length |= tx_resp->failure_rts; | |
b481de9c | 2823 | tx_status->flags = |
bb8c093b | 2824 | iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0; |
4c424e4c RR |
2825 | iwl4965_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags), |
2826 | &tx_status->control); | |
b481de9c | 2827 | |
b481de9c | 2828 | IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x " |
bb8c093b | 2829 | "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status), |
b481de9c ZY |
2830 | status, le32_to_cpu(tx_resp->rate_n_flags), |
2831 | tx_resp->failure_frame); | |
2832 | ||
2833 | IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index); | |
fe01b477 RR |
2834 | if (index != -1) { |
2835 | int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index); | |
2836 | #ifdef CONFIG_IWL4965_HT | |
2837 | if (tid != MAX_TID_COUNT) | |
2838 | priv->stations[sta_id].tid[tid].tfds_in_queue -= freed; | |
2839 | if (iwl4965_queue_space(&txq->q) > txq->q.low_mark && | |
2840 | (txq_id >= 0) && | |
2841 | priv->mac80211_registered) | |
2842 | ieee80211_wake_queue(priv->hw, txq_id); | |
2843 | if (tid != MAX_TID_COUNT) | |
2844 | iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id); | |
2845 | #endif | |
2846 | } | |
c8b0e6e1 | 2847 | #ifdef CONFIG_IWL4965_HT |
b481de9c | 2848 | } |
c8b0e6e1 | 2849 | #endif /* CONFIG_IWL4965_HT */ |
b481de9c ZY |
2850 | |
2851 | if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK)) | |
2852 | IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n"); | |
2853 | } | |
2854 | ||
2855 | ||
c79dd5b5 | 2856 | static void iwl4965_rx_reply_alive(struct iwl_priv *priv, |
bb8c093b | 2857 | struct iwl4965_rx_mem_buffer *rxb) |
b481de9c | 2858 | { |
bb8c093b CH |
2859 | struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data; |
2860 | struct iwl4965_alive_resp *palive; | |
b481de9c ZY |
2861 | struct delayed_work *pwork; |
2862 | ||
2863 | palive = &pkt->u.alive_frame; | |
2864 | ||
2865 | IWL_DEBUG_INFO("Alive ucode status 0x%08X revision " | |
2866 | "0x%01X 0x%01X\n", | |
2867 | palive->is_valid, palive->ver_type, | |
2868 | palive->ver_subtype); | |
2869 | ||
2870 | if (palive->ver_subtype == INITIALIZE_SUBTYPE) { | |
2871 | IWL_DEBUG_INFO("Initialization Alive received.\n"); | |
2872 | memcpy(&priv->card_alive_init, | |
2873 | &pkt->u.alive_frame, | |
bb8c093b | 2874 | sizeof(struct iwl4965_init_alive_resp)); |
b481de9c ZY |
2875 | pwork = &priv->init_alive_start; |
2876 | } else { | |
2877 | IWL_DEBUG_INFO("Runtime Alive received.\n"); | |
2878 | memcpy(&priv->card_alive, &pkt->u.alive_frame, | |
bb8c093b | 2879 | sizeof(struct iwl4965_alive_resp)); |
b481de9c ZY |
2880 | pwork = &priv->alive_start; |
2881 | } | |
2882 | ||
2883 | /* We delay the ALIVE response by 5ms to | |
2884 | * give the HW RF Kill time to activate... */ | |
2885 | if (palive->is_valid == UCODE_VALID_OK) | |
2886 | queue_delayed_work(priv->workqueue, pwork, | |
2887 | msecs_to_jiffies(5)); | |
2888 | else | |
2889 | IWL_WARNING("uCode did not respond OK.\n"); | |
2890 | } | |
2891 | ||
c79dd5b5 | 2892 | static void iwl4965_rx_reply_add_sta(struct iwl_priv *priv, |
bb8c093b | 2893 | struct iwl4965_rx_mem_buffer *rxb) |
b481de9c | 2894 | { |
bb8c093b | 2895 | struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data; |
b481de9c ZY |
2896 | |
2897 | IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status); | |
2898 | return; | |
2899 | } | |
2900 | ||
c79dd5b5 | 2901 | static void iwl4965_rx_reply_error(struct iwl_priv *priv, |
bb8c093b | 2902 | struct iwl4965_rx_mem_buffer *rxb) |
b481de9c | 2903 | { |
bb8c093b | 2904 | struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data; |
b481de9c ZY |
2905 | |
2906 | IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) " | |
2907 | "seq 0x%04X ser 0x%08X\n", | |
2908 | le32_to_cpu(pkt->u.err_resp.error_type), | |
2909 | get_cmd_string(pkt->u.err_resp.cmd_id), | |
2910 | pkt->u.err_resp.cmd_id, | |
2911 | le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num), | |
2912 | le32_to_cpu(pkt->u.err_resp.error_info)); | |
2913 | } | |
2914 | ||
2915 | #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x | |
2916 | ||
c79dd5b5 | 2917 | static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl4965_rx_mem_buffer *rxb) |
b481de9c | 2918 | { |
bb8c093b CH |
2919 | struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data; |
2920 | struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon; | |
2921 | struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif); | |
b481de9c ZY |
2922 | IWL_DEBUG_11H("CSA notif: channel %d, status %d\n", |
2923 | le16_to_cpu(csa->channel), le32_to_cpu(csa->status)); | |
2924 | rxon->channel = csa->channel; | |
2925 | priv->staging_rxon.channel = csa->channel; | |
2926 | } | |
2927 | ||
c79dd5b5 | 2928 | static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv, |
bb8c093b | 2929 | struct iwl4965_rx_mem_buffer *rxb) |
b481de9c | 2930 | { |
c8b0e6e1 | 2931 | #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT |
bb8c093b CH |
2932 | struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data; |
2933 | struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif); | |
b481de9c ZY |
2934 | |
2935 | if (!report->state) { | |
2936 | IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO, | |
2937 | "Spectrum Measure Notification: Start\n"); | |
2938 | return; | |
2939 | } | |
2940 | ||
2941 | memcpy(&priv->measure_report, report, sizeof(*report)); | |
2942 | priv->measurement_status |= MEASUREMENT_READY; | |
2943 | #endif | |
2944 | } | |
2945 | ||
c79dd5b5 | 2946 | static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv, |
bb8c093b | 2947 | struct iwl4965_rx_mem_buffer *rxb) |
b481de9c | 2948 | { |
0a6857e7 | 2949 | #ifdef CONFIG_IWLWIFI_DEBUG |
bb8c093b CH |
2950 | struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data; |
2951 | struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif); | |
b481de9c ZY |
2952 | IWL_DEBUG_RX("sleep mode: %d, src: %d\n", |
2953 | sleep->pm_sleep_mode, sleep->pm_wakeup_src); | |
2954 | #endif | |
2955 | } | |
2956 | ||
c79dd5b5 | 2957 | static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv, |
bb8c093b | 2958 | struct iwl4965_rx_mem_buffer *rxb) |
b481de9c | 2959 | { |
bb8c093b | 2960 | struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data; |
b481de9c ZY |
2961 | IWL_DEBUG_RADIO("Dumping %d bytes of unhandled " |
2962 | "notification for %s:\n", | |
2963 | le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd)); | |
0a6857e7 | 2964 | iwl_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len)); |
b481de9c ZY |
2965 | } |
2966 | ||
bb8c093b | 2967 | static void iwl4965_bg_beacon_update(struct work_struct *work) |
b481de9c | 2968 | { |
c79dd5b5 TW |
2969 | struct iwl_priv *priv = |
2970 | container_of(work, struct iwl_priv, beacon_update); | |
b481de9c ZY |
2971 | struct sk_buff *beacon; |
2972 | ||
2973 | /* Pull updated AP beacon from mac80211. will fail if not in AP mode */ | |
32bfd35d | 2974 | beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL); |
b481de9c ZY |
2975 | |
2976 | if (!beacon) { | |
2977 | IWL_ERROR("update beacon failed\n"); | |
2978 | return; | |
2979 | } | |
2980 | ||
2981 | mutex_lock(&priv->mutex); | |
2982 | /* new beacon skb is allocated every time; dispose previous.*/ | |
2983 | if (priv->ibss_beacon) | |
2984 | dev_kfree_skb(priv->ibss_beacon); | |
2985 | ||
2986 | priv->ibss_beacon = beacon; | |
2987 | mutex_unlock(&priv->mutex); | |
2988 | ||
bb8c093b | 2989 | iwl4965_send_beacon_cmd(priv); |
b481de9c ZY |
2990 | } |
2991 | ||
c79dd5b5 | 2992 | static void iwl4965_rx_beacon_notif(struct iwl_priv *priv, |
bb8c093b | 2993 | struct iwl4965_rx_mem_buffer *rxb) |
b481de9c | 2994 | { |
0a6857e7 | 2995 | #ifdef CONFIG_IWLWIFI_DEBUG |
bb8c093b CH |
2996 | struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data; |
2997 | struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status); | |
2998 | u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags); | |
b481de9c ZY |
2999 | |
3000 | IWL_DEBUG_RX("beacon status %x retries %d iss %d " | |
3001 | "tsf %d %d rate %d\n", | |
3002 | le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK, | |
3003 | beacon->beacon_notify_hdr.failure_frame, | |
3004 | le32_to_cpu(beacon->ibss_mgr_status), | |
3005 | le32_to_cpu(beacon->high_tsf), | |
3006 | le32_to_cpu(beacon->low_tsf), rate); | |
3007 | #endif | |
3008 | ||
3009 | if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) && | |
3010 | (!test_bit(STATUS_EXIT_PENDING, &priv->status))) | |
3011 | queue_work(priv->workqueue, &priv->beacon_update); | |
3012 | } | |
3013 | ||
3014 | /* Service response to REPLY_SCAN_CMD (0x80) */ | |
c79dd5b5 | 3015 | static void iwl4965_rx_reply_scan(struct iwl_priv *priv, |
bb8c093b | 3016 | struct iwl4965_rx_mem_buffer *rxb) |
b481de9c | 3017 | { |
0a6857e7 | 3018 | #ifdef CONFIG_IWLWIFI_DEBUG |
bb8c093b CH |
3019 | struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data; |
3020 | struct iwl4965_scanreq_notification *notif = | |
3021 | (struct iwl4965_scanreq_notification *)pkt->u.raw; | |
b481de9c ZY |
3022 | |
3023 | IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status); | |
3024 | #endif | |
3025 | } | |
3026 | ||
3027 | /* Service SCAN_START_NOTIFICATION (0x82) */ | |
c79dd5b5 | 3028 | static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv, |
bb8c093b | 3029 | struct iwl4965_rx_mem_buffer *rxb) |
b481de9c | 3030 | { |
bb8c093b CH |
3031 | struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data; |
3032 | struct iwl4965_scanstart_notification *notif = | |
3033 | (struct iwl4965_scanstart_notification *)pkt->u.raw; | |
b481de9c ZY |
3034 | priv->scan_start_tsf = le32_to_cpu(notif->tsf_low); |
3035 | IWL_DEBUG_SCAN("Scan start: " | |
3036 | "%d [802.11%s] " | |
3037 | "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n", | |
3038 | notif->channel, | |
3039 | notif->band ? "bg" : "a", | |
3040 | notif->tsf_high, | |
3041 | notif->tsf_low, notif->status, notif->beacon_timer); | |
3042 | } | |
3043 | ||
3044 | /* Service SCAN_RESULTS_NOTIFICATION (0x83) */ | |
c79dd5b5 | 3045 | static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv, |
bb8c093b | 3046 | struct iwl4965_rx_mem_buffer *rxb) |
b481de9c | 3047 | { |
bb8c093b CH |
3048 | struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data; |
3049 | struct iwl4965_scanresults_notification *notif = | |
3050 | (struct iwl4965_scanresults_notification *)pkt->u.raw; | |
b481de9c ZY |
3051 | |
3052 | IWL_DEBUG_SCAN("Scan ch.res: " | |
3053 | "%d [802.11%s] " | |
3054 | "(TSF: 0x%08X:%08X) - %d " | |
3055 | "elapsed=%lu usec (%dms since last)\n", | |
3056 | notif->channel, | |
3057 | notif->band ? "bg" : "a", | |
3058 | le32_to_cpu(notif->tsf_high), | |
3059 | le32_to_cpu(notif->tsf_low), | |
3060 | le32_to_cpu(notif->statistics[0]), | |
3061 | le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf, | |
3062 | jiffies_to_msecs(elapsed_jiffies | |
3063 | (priv->last_scan_jiffies, jiffies))); | |
3064 | ||
3065 | priv->last_scan_jiffies = jiffies; | |
7878a5a4 | 3066 | priv->next_scan_jiffies = 0; |
b481de9c ZY |
3067 | } |
3068 | ||
3069 | /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */ | |
c79dd5b5 | 3070 | static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv, |
bb8c093b | 3071 | struct iwl4965_rx_mem_buffer *rxb) |
b481de9c | 3072 | { |
bb8c093b CH |
3073 | struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data; |
3074 | struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw; | |
b481de9c ZY |
3075 | |
3076 | IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n", | |
3077 | scan_notif->scanned_channels, | |
3078 | scan_notif->tsf_low, | |
3079 | scan_notif->tsf_high, scan_notif->status); | |
3080 | ||
3081 | /* The HW is no longer scanning */ | |
3082 | clear_bit(STATUS_SCAN_HW, &priv->status); | |
3083 | ||
3084 | /* The scan completion notification came in, so kill that timer... */ | |
3085 | cancel_delayed_work(&priv->scan_check); | |
3086 | ||
3087 | IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n", | |
3088 | (priv->scan_bands == 2) ? "2.4" : "5.2", | |
3089 | jiffies_to_msecs(elapsed_jiffies | |
3090 | (priv->scan_pass_start, jiffies))); | |
3091 | ||
3092 | /* Remove this scanned band from the list | |
3093 | * of pending bands to scan */ | |
3094 | priv->scan_bands--; | |
3095 | ||
3096 | /* If a request to abort was given, or the scan did not succeed | |
3097 | * then we reset the scan state machine and terminate, | |
3098 | * re-queuing another scan if one has been requested */ | |
3099 | if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) { | |
3100 | IWL_DEBUG_INFO("Aborted scan completed.\n"); | |
3101 | clear_bit(STATUS_SCAN_ABORTING, &priv->status); | |
3102 | } else { | |
3103 | /* If there are more bands on this scan pass reschedule */ | |
3104 | if (priv->scan_bands > 0) | |
3105 | goto reschedule; | |
3106 | } | |
3107 | ||
3108 | priv->last_scan_jiffies = jiffies; | |
7878a5a4 | 3109 | priv->next_scan_jiffies = 0; |
b481de9c ZY |
3110 | IWL_DEBUG_INFO("Setting scan to off\n"); |
3111 | ||
3112 | clear_bit(STATUS_SCANNING, &priv->status); | |
3113 | ||
3114 | IWL_DEBUG_INFO("Scan took %dms\n", | |
3115 | jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies))); | |
3116 | ||
3117 | queue_work(priv->workqueue, &priv->scan_completed); | |
3118 | ||
3119 | return; | |
3120 | ||
3121 | reschedule: | |
3122 | priv->scan_pass_start = jiffies; | |
3123 | queue_work(priv->workqueue, &priv->request_scan); | |
3124 | } | |
3125 | ||
3126 | /* Handle notification from uCode that card's power state is changing | |
3127 | * due to software, hardware, or critical temperature RFKILL */ | |
c79dd5b5 | 3128 | static void iwl4965_rx_card_state_notif(struct iwl_priv *priv, |
bb8c093b | 3129 | struct iwl4965_rx_mem_buffer *rxb) |
b481de9c | 3130 | { |
bb8c093b | 3131 | struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data; |
b481de9c ZY |
3132 | u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags); |
3133 | unsigned long status = priv->status; | |
3134 | ||
3135 | IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n", | |
3136 | (flags & HW_CARD_DISABLED) ? "Kill" : "On", | |
3137 | (flags & SW_CARD_DISABLED) ? "Kill" : "On"); | |
3138 | ||
3139 | if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED | | |
3140 | RF_CARD_DISABLED)) { | |
3141 | ||
3395f6e9 | 3142 | iwl_write32(priv, CSR_UCODE_DRV_GP1_SET, |
b481de9c ZY |
3143 | CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); |
3144 | ||
3395f6e9 TW |
3145 | if (!iwl_grab_nic_access(priv)) { |
3146 | iwl_write_direct32( | |
b481de9c ZY |
3147 | priv, HBUS_TARG_MBX_C, |
3148 | HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED); | |
3149 | ||
3395f6e9 | 3150 | iwl_release_nic_access(priv); |
b481de9c ZY |
3151 | } |
3152 | ||
3153 | if (!(flags & RXON_CARD_DISABLED)) { | |
3395f6e9 | 3154 | iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, |
b481de9c | 3155 | CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); |
3395f6e9 TW |
3156 | if (!iwl_grab_nic_access(priv)) { |
3157 | iwl_write_direct32( | |
b481de9c ZY |
3158 | priv, HBUS_TARG_MBX_C, |
3159 | HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED); | |
3160 | ||
3395f6e9 | 3161 | iwl_release_nic_access(priv); |
b481de9c ZY |
3162 | } |
3163 | } | |
3164 | ||
3165 | if (flags & RF_CARD_DISABLED) { | |
3395f6e9 | 3166 | iwl_write32(priv, CSR_UCODE_DRV_GP1_SET, |
b481de9c | 3167 | CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT); |
3395f6e9 TW |
3168 | iwl_read32(priv, CSR_UCODE_DRV_GP1); |
3169 | if (!iwl_grab_nic_access(priv)) | |
3170 | iwl_release_nic_access(priv); | |
b481de9c ZY |
3171 | } |
3172 | } | |
3173 | ||
3174 | if (flags & HW_CARD_DISABLED) | |
3175 | set_bit(STATUS_RF_KILL_HW, &priv->status); | |
3176 | else | |
3177 | clear_bit(STATUS_RF_KILL_HW, &priv->status); | |
3178 | ||
3179 | ||
3180 | if (flags & SW_CARD_DISABLED) | |
3181 | set_bit(STATUS_RF_KILL_SW, &priv->status); | |
3182 | else | |
3183 | clear_bit(STATUS_RF_KILL_SW, &priv->status); | |
3184 | ||
3185 | if (!(flags & RXON_CARD_DISABLED)) | |
bb8c093b | 3186 | iwl4965_scan_cancel(priv); |
b481de9c ZY |
3187 | |
3188 | if ((test_bit(STATUS_RF_KILL_HW, &status) != | |
3189 | test_bit(STATUS_RF_KILL_HW, &priv->status)) || | |
3190 | (test_bit(STATUS_RF_KILL_SW, &status) != | |
3191 | test_bit(STATUS_RF_KILL_SW, &priv->status))) | |
3192 | queue_work(priv->workqueue, &priv->rf_kill); | |
3193 | else | |
3194 | wake_up_interruptible(&priv->wait_command_queue); | |
3195 | } | |
3196 | ||
3197 | /** | |
bb8c093b | 3198 | * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks |
b481de9c ZY |
3199 | * |
3200 | * Setup the RX handlers for each of the reply types sent from the uCode | |
3201 | * to the host. | |
3202 | * | |
3203 | * This function chains into the hardware specific files for them to setup | |
3204 | * any hardware specific handlers as well. | |
3205 | */ | |
c79dd5b5 | 3206 | static void iwl4965_setup_rx_handlers(struct iwl_priv *priv) |
b481de9c | 3207 | { |
bb8c093b CH |
3208 | priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive; |
3209 | priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta; | |
3210 | priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error; | |
3211 | priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa; | |
b481de9c | 3212 | priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] = |
bb8c093b CH |
3213 | iwl4965_rx_spectrum_measure_notif; |
3214 | priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif; | |
b481de9c | 3215 | priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] = |
bb8c093b CH |
3216 | iwl4965_rx_pm_debug_statistics_notif; |
3217 | priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif; | |
b481de9c | 3218 | |
9fbab516 BC |
3219 | /* |
3220 | * The same handler is used for both the REPLY to a discrete | |
3221 | * statistics request from the host as well as for the periodic | |
3222 | * statistics notifications (after received beacons) from the uCode. | |
b481de9c | 3223 | */ |
bb8c093b CH |
3224 | priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics; |
3225 | priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics; | |
b481de9c | 3226 | |
bb8c093b CH |
3227 | priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan; |
3228 | priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif; | |
b481de9c | 3229 | priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] = |
bb8c093b | 3230 | iwl4965_rx_scan_results_notif; |
b481de9c | 3231 | priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] = |
bb8c093b CH |
3232 | iwl4965_rx_scan_complete_notif; |
3233 | priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif; | |
3234 | priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx; | |
b481de9c | 3235 | |
9fbab516 | 3236 | /* Set up hardware specific Rx handlers */ |
bb8c093b | 3237 | iwl4965_hw_rx_handler_setup(priv); |
b481de9c ZY |
3238 | } |
3239 | ||
3240 | /** | |
bb8c093b | 3241 | * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them |
b481de9c ZY |
3242 | * @rxb: Rx buffer to reclaim |
3243 | * | |
3244 | * If an Rx buffer has an async callback associated with it the callback | |
3245 | * will be executed. The attached skb (if present) will only be freed | |
3246 | * if the callback returns 1 | |
3247 | */ | |
c79dd5b5 | 3248 | static void iwl4965_tx_cmd_complete(struct iwl_priv *priv, |
bb8c093b | 3249 | struct iwl4965_rx_mem_buffer *rxb) |
b481de9c | 3250 | { |
bb8c093b | 3251 | struct iwl4965_rx_packet *pkt = (struct iwl4965_rx_packet *)rxb->skb->data; |
b481de9c ZY |
3252 | u16 sequence = le16_to_cpu(pkt->hdr.sequence); |
3253 | int txq_id = SEQ_TO_QUEUE(sequence); | |
3254 | int index = SEQ_TO_INDEX(sequence); | |
3255 | int huge = sequence & SEQ_HUGE_FRAME; | |
3256 | int cmd_index; | |
857485c0 | 3257 | struct iwl_cmd *cmd; |
b481de9c ZY |
3258 | |
3259 | /* If a Tx command is being handled and it isn't in the actual | |
3260 | * command queue then there a command routing bug has been introduced | |
3261 | * in the queue management code. */ | |
3262 | if (txq_id != IWL_CMD_QUEUE_NUM) | |
3263 | IWL_ERROR("Error wrong command queue %d command id 0x%X\n", | |
3264 | txq_id, pkt->hdr.cmd); | |
3265 | BUG_ON(txq_id != IWL_CMD_QUEUE_NUM); | |
3266 | ||
3267 | cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge); | |
3268 | cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index]; | |
3269 | ||
3270 | /* Input error checking is done when commands are added to queue. */ | |
3271 | if (cmd->meta.flags & CMD_WANT_SKB) { | |
3272 | cmd->meta.source->u.skb = rxb->skb; | |
3273 | rxb->skb = NULL; | |
3274 | } else if (cmd->meta.u.callback && | |
3275 | !cmd->meta.u.callback(priv, cmd, rxb->skb)) | |
3276 | rxb->skb = NULL; | |
3277 | ||
bb8c093b | 3278 | iwl4965_tx_queue_reclaim(priv, txq_id, index); |
b481de9c ZY |
3279 | |
3280 | if (!(cmd->meta.flags & CMD_ASYNC)) { | |
3281 | clear_bit(STATUS_HCMD_ACTIVE, &priv->status); | |
3282 | wake_up_interruptible(&priv->wait_command_queue); | |
3283 | } | |
3284 | } | |
3285 | ||
3286 | /************************** RX-FUNCTIONS ****************************/ | |
3287 | /* | |
3288 | * Rx theory of operation | |
3289 | * | |
9fbab516 BC |
3290 | * Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs), |
3291 | * each of which point to Receive Buffers to be filled by 4965. These get | |
3292 | * used not only for Rx frames, but for any command response or notification | |
3293 | * from the 4965. The driver and 4965 manage the Rx buffers by means | |
3294 | * of indexes into the circular buffer. | |
b481de9c ZY |
3295 | * |
3296 | * Rx Queue Indexes | |
3297 | * The host/firmware share two index registers for managing the Rx buffers. | |
3298 | * | |
3299 | * The READ index maps to the first position that the firmware may be writing | |
3300 | * to -- the driver can read up to (but not including) this position and get | |
3301 | * good data. | |
3302 | * The READ index is managed by the firmware once the card is enabled. | |
3303 | * | |
3304 | * The WRITE index maps to the last position the driver has read from -- the | |
3305 | * position preceding WRITE is the last slot the firmware can place a packet. | |
3306 | * | |
3307 | * The queue is empty (no good data) if WRITE = READ - 1, and is full if | |
3308 | * WRITE = READ. | |
3309 | * | |
9fbab516 | 3310 | * During initialization, the host sets up the READ queue position to the first |
b481de9c ZY |
3311 | * INDEX position, and WRITE to the last (READ - 1 wrapped) |
3312 | * | |
9fbab516 | 3313 | * When the firmware places a packet in a buffer, it will advance the READ index |
b481de9c ZY |
3314 | * and fire the RX interrupt. The driver can then query the READ index and |
3315 | * process as many packets as possible, moving the WRITE index forward as it | |
3316 | * resets the Rx queue buffers with new memory. | |
3317 | * | |
3318 | * The management in the driver is as follows: | |
3319 | * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When | |
3320 | * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled | |
01ebd063 | 3321 | * to replenish the iwl->rxq->rx_free. |
bb8c093b | 3322 | * + In iwl4965_rx_replenish (scheduled) if 'processed' != 'read' then the |
b481de9c ZY |
3323 | * iwl->rxq is replenished and the READ INDEX is updated (updating the |
3324 | * 'processed' and 'read' driver indexes as well) | |
3325 | * + A received packet is processed and handed to the kernel network stack, | |
3326 | * detached from the iwl->rxq. The driver 'processed' index is updated. | |
3327 | * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free | |
3328 | * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ | |
3329 | * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there | |
3330 | * were enough free buffers and RX_STALLED is set it is cleared. | |
3331 | * | |
3332 | * | |
3333 | * Driver sequence: | |
3334 | * | |
9fbab516 BC |
3335 | * iwl4965_rx_queue_alloc() Allocates rx_free |
3336 | * iwl4965_rx_replenish() Replenishes rx_free list from rx_used, and calls | |
bb8c093b | 3337 | * iwl4965_rx_queue_restock |
9fbab516 | 3338 | * iwl4965_rx_queue_restock() Moves available buffers from rx_free into Rx |
b481de9c ZY |
3339 | * queue, updates firmware pointers, and updates |
3340 | * the WRITE index. If insufficient rx_free buffers | |
bb8c093b | 3341 | * are available, schedules iwl4965_rx_replenish |
b481de9c ZY |
3342 | * |
3343 | * -- enable interrupts -- | |
9fbab516 | 3344 | * ISR - iwl4965_rx() Detach iwl4965_rx_mem_buffers from pool up to the |
b481de9c ZY |
3345 | * READ INDEX, detaching the SKB from the pool. |
3346 | * Moves the packet buffer from queue to rx_used. | |
bb8c093b | 3347 | * Calls iwl4965_rx_queue_restock to refill any empty |
b481de9c ZY |
3348 | * slots. |
3349 | * ... | |
3350 | * | |
3351 | */ | |
3352 | ||
3353 | /** | |
bb8c093b | 3354 | * iwl4965_rx_queue_space - Return number of free slots available in queue. |
b481de9c | 3355 | */ |
bb8c093b | 3356 | static int iwl4965_rx_queue_space(const struct iwl4965_rx_queue *q) |
b481de9c ZY |
3357 | { |
3358 | int s = q->read - q->write; | |
3359 | if (s <= 0) | |
3360 | s += RX_QUEUE_SIZE; | |
3361 | /* keep some buffer to not confuse full and empty queue */ | |
3362 | s -= 2; | |
3363 | if (s < 0) | |
3364 | s = 0; | |
3365 | return s; | |
3366 | } | |
3367 | ||
3368 | /** | |
bb8c093b | 3369 | * iwl4965_rx_queue_update_write_ptr - Update the write pointer for the RX queue |
b481de9c | 3370 | */ |
c79dd5b5 | 3371 | int iwl4965_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl4965_rx_queue *q) |
b481de9c ZY |
3372 | { |
3373 | u32 reg = 0; | |
3374 | int rc = 0; | |
3375 | unsigned long flags; | |
3376 | ||
3377 | spin_lock_irqsave(&q->lock, flags); | |
3378 | ||
3379 | if (q->need_update == 0) | |
3380 | goto exit_unlock; | |
3381 | ||
6440adb5 | 3382 | /* If power-saving is in use, make sure device is awake */ |
b481de9c | 3383 | if (test_bit(STATUS_POWER_PMI, &priv->status)) { |
3395f6e9 | 3384 | reg = iwl_read32(priv, CSR_UCODE_DRV_GP1); |
b481de9c ZY |
3385 | |
3386 | if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) { | |
3395f6e9 | 3387 | iwl_set_bit(priv, CSR_GP_CNTRL, |
b481de9c ZY |
3388 | CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); |
3389 | goto exit_unlock; | |
3390 | } | |
3391 | ||
3395f6e9 | 3392 | rc = iwl_grab_nic_access(priv); |
b481de9c ZY |
3393 | if (rc) |
3394 | goto exit_unlock; | |
3395 | ||
6440adb5 | 3396 | /* Device expects a multiple of 8 */ |
3395f6e9 | 3397 | iwl_write_direct32(priv, FH_RSCSR_CHNL0_WPTR, |
b481de9c | 3398 | q->write & ~0x7); |
3395f6e9 | 3399 | iwl_release_nic_access(priv); |
6440adb5 BC |
3400 | |
3401 | /* Else device is assumed to be awake */ | |
b481de9c | 3402 | } else |
6440adb5 | 3403 | /* Device expects a multiple of 8 */ |
3395f6e9 | 3404 | iwl_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7); |
b481de9c ZY |
3405 | |
3406 | ||
3407 | q->need_update = 0; | |
3408 | ||
3409 | exit_unlock: | |
3410 | spin_unlock_irqrestore(&q->lock, flags); | |
3411 | return rc; | |
3412 | } | |
3413 | ||
3414 | /** | |
9fbab516 | 3415 | * iwl4965_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr |
b481de9c | 3416 | */ |
c79dd5b5 | 3417 | static inline __le32 iwl4965_dma_addr2rbd_ptr(struct iwl_priv *priv, |
b481de9c ZY |
3418 | dma_addr_t dma_addr) |
3419 | { | |
3420 | return cpu_to_le32((u32)(dma_addr >> 8)); | |
3421 | } | |
3422 | ||
3423 | ||
3424 | /** | |
bb8c093b | 3425 | * iwl4965_rx_queue_restock - refill RX queue from pre-allocated pool |
b481de9c | 3426 | * |
9fbab516 | 3427 | * If there are slots in the RX queue that need to be restocked, |
b481de9c | 3428 | * and we have free pre-allocated buffers, fill the ranks as much |
9fbab516 | 3429 | * as we can, pulling from rx_free. |
b481de9c ZY |
3430 | * |
3431 | * This moves the 'write' index forward to catch up with 'processed', and | |
3432 | * also updates the memory address in the firmware to reference the new | |
3433 | * target buffer. | |
3434 | */ | |
c79dd5b5 | 3435 | static int iwl4965_rx_queue_restock(struct iwl_priv *priv) |
b481de9c | 3436 | { |
bb8c093b | 3437 | struct iwl4965_rx_queue *rxq = &priv->rxq; |
b481de9c | 3438 | struct list_head *element; |
bb8c093b | 3439 | struct iwl4965_rx_mem_buffer *rxb; |
b481de9c ZY |
3440 | unsigned long flags; |
3441 | int write, rc; | |
3442 | ||
3443 | spin_lock_irqsave(&rxq->lock, flags); | |
3444 | write = rxq->write & ~0x7; | |
bb8c093b | 3445 | while ((iwl4965_rx_queue_space(rxq) > 0) && (rxq->free_count)) { |
6440adb5 | 3446 | /* Get next free Rx buffer, remove from free list */ |
b481de9c | 3447 | element = rxq->rx_free.next; |
bb8c093b | 3448 | rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list); |
b481de9c | 3449 | list_del(element); |
6440adb5 BC |
3450 | |
3451 | /* Point to Rx buffer via next RBD in circular buffer */ | |
bb8c093b | 3452 | rxq->bd[rxq->write] = iwl4965_dma_addr2rbd_ptr(priv, rxb->dma_addr); |
b481de9c ZY |
3453 | rxq->queue[rxq->write] = rxb; |
3454 | rxq->write = (rxq->write + 1) & RX_QUEUE_MASK; | |
3455 | rxq->free_count--; | |
3456 | } | |
3457 | spin_unlock_irqrestore(&rxq->lock, flags); | |
3458 | /* If the pre-allocated buffer pool is dropping low, schedule to | |
3459 | * refill it */ | |
3460 | if (rxq->free_count <= RX_LOW_WATERMARK) | |
3461 | queue_work(priv->workqueue, &priv->rx_replenish); | |
3462 | ||
3463 | ||
6440adb5 BC |
3464 | /* If we've added more space for the firmware to place data, tell it. |
3465 | * Increment device's write pointer in multiples of 8. */ | |
b481de9c ZY |
3466 | if ((write != (rxq->write & ~0x7)) |
3467 | || (abs(rxq->write - rxq->read) > 7)) { | |
3468 | spin_lock_irqsave(&rxq->lock, flags); | |
3469 | rxq->need_update = 1; | |
3470 | spin_unlock_irqrestore(&rxq->lock, flags); | |
bb8c093b | 3471 | rc = iwl4965_rx_queue_update_write_ptr(priv, rxq); |
b481de9c ZY |
3472 | if (rc) |
3473 | return rc; | |
3474 | } | |
3475 | ||
3476 | return 0; | |
3477 | } | |
3478 | ||
3479 | /** | |
bb8c093b | 3480 | * iwl4965_rx_replenish - Move all used packet from rx_used to rx_free |
b481de9c ZY |
3481 | * |
3482 | * When moving to rx_free an SKB is allocated for the slot. | |
3483 | * | |
bb8c093b | 3484 | * Also restock the Rx queue via iwl4965_rx_queue_restock. |
01ebd063 | 3485 | * This is called as a scheduled work item (except for during initialization) |
b481de9c | 3486 | */ |
c79dd5b5 | 3487 | static void iwl4965_rx_allocate(struct iwl_priv *priv) |
b481de9c | 3488 | { |
bb8c093b | 3489 | struct iwl4965_rx_queue *rxq = &priv->rxq; |
b481de9c | 3490 | struct list_head *element; |
bb8c093b | 3491 | struct iwl4965_rx_mem_buffer *rxb; |
b481de9c ZY |
3492 | unsigned long flags; |
3493 | spin_lock_irqsave(&rxq->lock, flags); | |
3494 | while (!list_empty(&rxq->rx_used)) { | |
3495 | element = rxq->rx_used.next; | |
bb8c093b | 3496 | rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list); |
6440adb5 BC |
3497 | |
3498 | /* Alloc a new receive buffer */ | |
b481de9c | 3499 | rxb->skb = |
5425e490 | 3500 | alloc_skb(priv->hw_params.rx_buf_size, |
9ee1ba47 | 3501 | __GFP_NOWARN | GFP_ATOMIC); |
b481de9c ZY |
3502 | if (!rxb->skb) { |
3503 | if (net_ratelimit()) | |
3504 | printk(KERN_CRIT DRV_NAME | |
3505 | ": Can not allocate SKB buffers\n"); | |
3506 | /* We don't reschedule replenish work here -- we will | |
3507 | * call the restock method and if it still needs | |
3508 | * more buffers it will schedule replenish */ | |
3509 | break; | |
3510 | } | |
3511 | priv->alloc_rxb_skb++; | |
3512 | list_del(element); | |
6440adb5 BC |
3513 | |
3514 | /* Get physical address of RB/SKB */ | |
b481de9c ZY |
3515 | rxb->dma_addr = |
3516 | pci_map_single(priv->pci_dev, rxb->skb->data, | |
5425e490 | 3517 | priv->hw_params.rx_buf_size, PCI_DMA_FROMDEVICE); |
b481de9c ZY |
3518 | list_add_tail(&rxb->list, &rxq->rx_free); |
3519 | rxq->free_count++; | |
3520 | } | |
3521 | spin_unlock_irqrestore(&rxq->lock, flags); | |
5c0eef96 MA |
3522 | } |
3523 | ||
3524 | /* | |
3525 | * this should be called while priv->lock is locked | |
3526 | */ | |
4fd1f841 | 3527 | static void __iwl4965_rx_replenish(void *data) |
5c0eef96 | 3528 | { |
c79dd5b5 | 3529 | struct iwl_priv *priv = data; |
5c0eef96 MA |
3530 | |
3531 | iwl4965_rx_allocate(priv); | |
3532 | iwl4965_rx_queue_restock(priv); | |
3533 | } | |
3534 | ||
3535 | ||
3536 | void iwl4965_rx_replenish(void *data) | |
3537 | { | |
c79dd5b5 | 3538 | struct iwl_priv *priv = data; |
5c0eef96 MA |
3539 | unsigned long flags; |
3540 | ||
3541 | iwl4965_rx_allocate(priv); | |
b481de9c ZY |
3542 | |
3543 | spin_lock_irqsave(&priv->lock, flags); | |
bb8c093b | 3544 | iwl4965_rx_queue_restock(priv); |
b481de9c ZY |
3545 | spin_unlock_irqrestore(&priv->lock, flags); |
3546 | } | |
3547 | ||
3548 | /* Assumes that the skb field of the buffers in 'pool' is kept accurate. | |
9fbab516 | 3549 | * If an SKB has been detached, the POOL needs to have its SKB set to NULL |
b481de9c ZY |
3550 | * This free routine walks the list of POOL entries and if SKB is set to |
3551 | * non NULL it is unmapped and freed | |
3552 | */ | |
c79dd5b5 | 3553 | static void iwl4965_rx_queue_free(struct iwl_priv *priv, struct iwl4965_rx_queue *rxq) |
b481de9c ZY |
3554 | { |
3555 | int i; | |
3556 | for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) { | |
3557 | if (rxq->pool[i].skb != NULL) { | |
3558 | pci_unmap_single(priv->pci_dev, | |
3559 | rxq->pool[i].dma_addr, | |
5425e490 | 3560 | priv->hw_params.rx_buf_size, |
9ee1ba47 | 3561 | PCI_DMA_FROMDEVICE); |
b481de9c ZY |
3562 | dev_kfree_skb(rxq->pool[i].skb); |
3563 | } | |
3564 | } | |
3565 | ||
3566 | pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd, | |
3567 | rxq->dma_addr); | |
3568 | rxq->bd = NULL; | |
3569 | } | |
3570 | ||
c79dd5b5 | 3571 | int iwl4965_rx_queue_alloc(struct iwl_priv *priv) |
b481de9c | 3572 | { |
bb8c093b | 3573 | struct iwl4965_rx_queue *rxq = &priv->rxq; |
b481de9c ZY |
3574 | struct pci_dev *dev = priv->pci_dev; |
3575 | int i; | |
3576 | ||
3577 | spin_lock_init(&rxq->lock); | |
3578 | INIT_LIST_HEAD(&rxq->rx_free); | |
3579 | INIT_LIST_HEAD(&rxq->rx_used); | |
6440adb5 BC |
3580 | |
3581 | /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */ | |
b481de9c ZY |
3582 | rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr); |
3583 | if (!rxq->bd) | |
3584 | return -ENOMEM; | |
6440adb5 | 3585 | |
b481de9c ZY |
3586 | /* Fill the rx_used queue with _all_ of the Rx buffers */ |
3587 | for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) | |
3588 | list_add_tail(&rxq->pool[i].list, &rxq->rx_used); | |
6440adb5 | 3589 | |
b481de9c ZY |
3590 | /* Set us so that we have processed and used all buffers, but have |
3591 | * not restocked the Rx queue with fresh buffers */ | |
3592 | rxq->read = rxq->write = 0; | |
3593 | rxq->free_count = 0; | |
3594 | rxq->need_update = 0; | |
3595 | return 0; | |
3596 | } | |
3597 | ||
c79dd5b5 | 3598 | void iwl4965_rx_queue_reset(struct iwl_priv *priv, struct iwl4965_rx_queue *rxq) |
b481de9c ZY |
3599 | { |
3600 | unsigned long flags; | |
3601 | int i; | |
3602 | spin_lock_irqsave(&rxq->lock, flags); | |
3603 | INIT_LIST_HEAD(&rxq->rx_free); | |
3604 | INIT_LIST_HEAD(&rxq->rx_used); | |
3605 | /* Fill the rx_used queue with _all_ of the Rx buffers */ | |
3606 | for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) { | |
3607 | /* In the reset function, these buffers may have been allocated | |
3608 | * to an SKB, so we need to unmap and free potential storage */ | |
3609 | if (rxq->pool[i].skb != NULL) { | |
3610 | pci_unmap_single(priv->pci_dev, | |
3611 | rxq->pool[i].dma_addr, | |
5425e490 | 3612 | priv->hw_params.rx_buf_size, |
9ee1ba47 | 3613 | PCI_DMA_FROMDEVICE); |
b481de9c ZY |
3614 | priv->alloc_rxb_skb--; |
3615 | dev_kfree_skb(rxq->pool[i].skb); | |
3616 | rxq->pool[i].skb = NULL; | |
3617 | } | |
3618 | list_add_tail(&rxq->pool[i].list, &rxq->rx_used); | |
3619 | } | |
3620 | ||
3621 | /* Set us so that we have processed and used all buffers, but have | |
3622 | * not restocked the Rx queue with fresh buffers */ | |
3623 | rxq->read = rxq->write = 0; | |
3624 | rxq->free_count = 0; | |
3625 | spin_unlock_irqrestore(&rxq->lock, flags); | |
3626 | } | |
3627 | ||
3628 | /* Convert linear signal-to-noise ratio into dB */ | |
3629 | static u8 ratio2dB[100] = { | |
3630 | /* 0 1 2 3 4 5 6 7 8 9 */ | |
3631 | 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */ | |
3632 | 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */ | |
3633 | 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */ | |
3634 | 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */ | |
3635 | 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */ | |
3636 | 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */ | |
3637 | 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */ | |
3638 | 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */ | |
3639 | 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */ | |
3640 | 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */ | |
3641 | }; | |
3642 | ||
3643 | /* Calculates a relative dB value from a ratio of linear | |
3644 | * (i.e. not dB) signal levels. | |
3645 | * Conversion assumes that levels are voltages (20*log), not powers (10*log). */ | |
bb8c093b | 3646 | int iwl4965_calc_db_from_ratio(int sig_ratio) |
b481de9c | 3647 | { |
c899a575 AB |
3648 | /* 1000:1 or higher just report as 60 dB */ |
3649 | if (sig_ratio >= 1000) | |
b481de9c ZY |
3650 | return 60; |
3651 | ||
c899a575 | 3652 | /* 100:1 or higher, divide by 10 and use table, |
b481de9c | 3653 | * add 20 dB to make up for divide by 10 */ |
c899a575 | 3654 | if (sig_ratio >= 100) |
b481de9c ZY |
3655 | return (20 + (int)ratio2dB[sig_ratio/10]); |
3656 | ||
3657 | /* We shouldn't see this */ | |
3658 | if (sig_ratio < 1) | |
3659 | return 0; | |
3660 | ||
3661 | /* Use table for ratios 1:1 - 99:1 */ | |
3662 | return (int)ratio2dB[sig_ratio]; | |
3663 | } | |
3664 | ||
3665 | #define PERFECT_RSSI (-20) /* dBm */ | |
3666 | #define WORST_RSSI (-95) /* dBm */ | |
3667 | #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI) | |
3668 | ||
3669 | /* Calculate an indication of rx signal quality (a percentage, not dBm!). | |
3670 | * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info | |
3671 | * about formulas used below. */ | |
bb8c093b | 3672 | int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm) |
b481de9c ZY |
3673 | { |
3674 | int sig_qual; | |
3675 | int degradation = PERFECT_RSSI - rssi_dbm; | |
3676 | ||
3677 | /* If we get a noise measurement, use signal-to-noise ratio (SNR) | |
3678 | * as indicator; formula is (signal dbm - noise dbm). | |
3679 | * SNR at or above 40 is a great signal (100%). | |
3680 | * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator. | |
3681 | * Weakest usable signal is usually 10 - 15 dB SNR. */ | |
3682 | if (noise_dbm) { | |
3683 | if (rssi_dbm - noise_dbm >= 40) | |
3684 | return 100; | |
3685 | else if (rssi_dbm < noise_dbm) | |
3686 | return 0; | |
3687 | sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2; | |
3688 | ||
3689 | /* Else use just the signal level. | |
3690 | * This formula is a least squares fit of data points collected and | |
3691 | * compared with a reference system that had a percentage (%) display | |
3692 | * for signal quality. */ | |
3693 | } else | |
3694 | sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation * | |
3695 | (15 * RSSI_RANGE + 62 * degradation)) / | |
3696 | (RSSI_RANGE * RSSI_RANGE); | |
3697 | ||
3698 | if (sig_qual > 100) | |
3699 | sig_qual = 100; | |
3700 | else if (sig_qual < 1) | |
3701 | sig_qual = 0; | |
3702 | ||
3703 | return sig_qual; | |
3704 | } | |
3705 | ||
3706 | /** | |
9fbab516 | 3707 | * iwl4965_rx_handle - Main entry function for receiving responses from uCode |
b481de9c ZY |
3708 | * |
3709 | * Uses the priv->rx_handlers callback function array to invoke | |
3710 | * the appropriate handlers, including command responses, | |
3711 | * frame-received notifications, and other notifications. | |
3712 | */ | |
c79dd5b5 | 3713 | static void iwl4965_rx_handle(struct iwl_priv *priv) |
b481de9c | 3714 | { |
bb8c093b CH |
3715 | struct iwl4965_rx_mem_buffer *rxb; |
3716 | struct iwl4965_rx_packet *pkt; | |
3717 | struct iwl4965_rx_queue *rxq = &priv->rxq; | |
b481de9c ZY |
3718 | u32 r, i; |
3719 | int reclaim; | |
3720 | unsigned long flags; | |
5c0eef96 | 3721 | u8 fill_rx = 0; |
d68ab680 | 3722 | u32 count = 8; |
b481de9c | 3723 | |
6440adb5 BC |
3724 | /* uCode's read index (stored in shared DRAM) indicates the last Rx |
3725 | * buffer that the driver may process (last buffer filled by ucode). */ | |
bb8c093b | 3726 | r = iwl4965_hw_get_rx_read(priv); |
b481de9c ZY |
3727 | i = rxq->read; |
3728 | ||
3729 | /* Rx interrupt, but nothing sent from uCode */ | |
3730 | if (i == r) | |
3731 | IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i); | |
3732 | ||
5c0eef96 MA |
3733 | if (iwl4965_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2)) |
3734 | fill_rx = 1; | |
3735 | ||
b481de9c ZY |
3736 | while (i != r) { |
3737 | rxb = rxq->queue[i]; | |
3738 | ||
9fbab516 | 3739 | /* If an RXB doesn't have a Rx queue slot associated with it, |
b481de9c ZY |
3740 | * then a bug has been introduced in the queue refilling |
3741 | * routines -- catch it here */ | |
3742 | BUG_ON(rxb == NULL); | |
3743 | ||
3744 | rxq->queue[i] = NULL; | |
3745 | ||
3746 | pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr, | |
5425e490 | 3747 | priv->hw_params.rx_buf_size, |
b481de9c | 3748 | PCI_DMA_FROMDEVICE); |
bb8c093b | 3749 | pkt = (struct iwl4965_rx_packet *)rxb->skb->data; |
b481de9c ZY |
3750 | |
3751 | /* Reclaim a command buffer only if this packet is a response | |
3752 | * to a (driver-originated) command. | |
3753 | * If the packet (e.g. Rx frame) originated from uCode, | |
3754 | * there is no command buffer to reclaim. | |
3755 | * Ucode should set SEQ_RX_FRAME bit if ucode-originated, | |
3756 | * but apparently a few don't get set; catch them here. */ | |
3757 | reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) && | |
3758 | (pkt->hdr.cmd != REPLY_RX_PHY_CMD) && | |
857485c0 | 3759 | (pkt->hdr.cmd != REPLY_RX) && |
cfe01709 | 3760 | (pkt->hdr.cmd != REPLY_COMPRESSED_BA) && |
b481de9c ZY |
3761 | (pkt->hdr.cmd != STATISTICS_NOTIFICATION) && |
3762 | (pkt->hdr.cmd != REPLY_TX); | |
3763 | ||
3764 | /* Based on type of command response or notification, | |
3765 | * handle those that need handling via function in | |
bb8c093b | 3766 | * rx_handlers table. See iwl4965_setup_rx_handlers() */ |
b481de9c ZY |
3767 | if (priv->rx_handlers[pkt->hdr.cmd]) { |
3768 | IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR, | |
3769 | "r = %d, i = %d, %s, 0x%02x\n", r, i, | |
3770 | get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd); | |
3771 | priv->rx_handlers[pkt->hdr.cmd] (priv, rxb); | |
3772 | } else { | |
3773 | /* No handling needed */ | |
3774 | IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR, | |
3775 | "r %d i %d No handler needed for %s, 0x%02x\n", | |
3776 | r, i, get_cmd_string(pkt->hdr.cmd), | |
3777 | pkt->hdr.cmd); | |
3778 | } | |
3779 | ||
3780 | if (reclaim) { | |
9fbab516 | 3781 | /* Invoke any callbacks, transfer the skb to caller, and |
857485c0 | 3782 | * fire off the (possibly) blocking iwl_send_cmd() |
b481de9c ZY |
3783 | * as we reclaim the driver command queue */ |
3784 | if (rxb && rxb->skb) | |
bb8c093b | 3785 | iwl4965_tx_cmd_complete(priv, rxb); |
b481de9c ZY |
3786 | else |
3787 | IWL_WARNING("Claim null rxb?\n"); | |
3788 | } | |
3789 | ||
3790 | /* For now we just don't re-use anything. We can tweak this | |
3791 | * later to try and re-use notification packets and SKBs that | |
3792 | * fail to Rx correctly */ | |
3793 | if (rxb->skb != NULL) { | |
3794 | priv->alloc_rxb_skb--; | |
3795 | dev_kfree_skb_any(rxb->skb); | |
3796 | rxb->skb = NULL; | |
3797 | } | |
3798 | ||
3799 | pci_unmap_single(priv->pci_dev, rxb->dma_addr, | |
5425e490 | 3800 | priv->hw_params.rx_buf_size, |
9ee1ba47 | 3801 | PCI_DMA_FROMDEVICE); |
b481de9c ZY |
3802 | spin_lock_irqsave(&rxq->lock, flags); |
3803 | list_add_tail(&rxb->list, &priv->rxq.rx_used); | |
3804 | spin_unlock_irqrestore(&rxq->lock, flags); | |
3805 | i = (i + 1) & RX_QUEUE_MASK; | |
5c0eef96 MA |
3806 | /* If there are a lot of unused frames, |
3807 | * restock the Rx queue so ucode wont assert. */ | |
3808 | if (fill_rx) { | |
3809 | count++; | |
3810 | if (count >= 8) { | |
3811 | priv->rxq.read = i; | |
3812 | __iwl4965_rx_replenish(priv); | |
3813 | count = 0; | |
3814 | } | |
3815 | } | |
b481de9c ZY |
3816 | } |
3817 | ||
3818 | /* Backtrack one entry */ | |
3819 | priv->rxq.read = i; | |
bb8c093b | 3820 | iwl4965_rx_queue_restock(priv); |
b481de9c ZY |
3821 | } |
3822 | ||
6440adb5 BC |
3823 | /** |
3824 | * iwl4965_tx_queue_update_write_ptr - Send new write index to hardware | |
3825 | */ | |
c79dd5b5 | 3826 | static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv, |
bb8c093b | 3827 | struct iwl4965_tx_queue *txq) |
b481de9c ZY |
3828 | { |
3829 | u32 reg = 0; | |
3830 | int rc = 0; | |
3831 | int txq_id = txq->q.id; | |
3832 | ||
3833 | if (txq->need_update == 0) | |
3834 | return rc; | |
3835 | ||
3836 | /* if we're trying to save power */ | |
3837 | if (test_bit(STATUS_POWER_PMI, &priv->status)) { | |
3838 | /* wake up nic if it's powered down ... | |
3839 | * uCode will wake up, and interrupt us again, so next | |
3840 | * time we'll skip this part. */ | |
3395f6e9 | 3841 | reg = iwl_read32(priv, CSR_UCODE_DRV_GP1); |
b481de9c ZY |
3842 | |
3843 | if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) { | |
3844 | IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg); | |
3395f6e9 | 3845 | iwl_set_bit(priv, CSR_GP_CNTRL, |
b481de9c ZY |
3846 | CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); |
3847 | return rc; | |
3848 | } | |
3849 | ||
3850 | /* restore this queue's parameters in nic hardware. */ | |
3395f6e9 | 3851 | rc = iwl_grab_nic_access(priv); |
b481de9c ZY |
3852 | if (rc) |
3853 | return rc; | |
3395f6e9 | 3854 | iwl_write_direct32(priv, HBUS_TARG_WRPTR, |
fc4b6853 | 3855 | txq->q.write_ptr | (txq_id << 8)); |
3395f6e9 | 3856 | iwl_release_nic_access(priv); |
b481de9c ZY |
3857 | |
3858 | /* else not in power-save mode, uCode will never sleep when we're | |
3859 | * trying to tx (during RFKILL, we're not trying to tx). */ | |
3860 | } else | |
3395f6e9 | 3861 | iwl_write32(priv, HBUS_TARG_WRPTR, |
fc4b6853 | 3862 | txq->q.write_ptr | (txq_id << 8)); |
b481de9c ZY |
3863 | |
3864 | txq->need_update = 0; | |
3865 | ||
3866 | return rc; | |
3867 | } | |
3868 | ||
0a6857e7 | 3869 | #ifdef CONFIG_IWLWIFI_DEBUG |
bb8c093b | 3870 | static void iwl4965_print_rx_config_cmd(struct iwl4965_rxon_cmd *rxon) |
b481de9c | 3871 | { |
0795af57 JP |
3872 | DECLARE_MAC_BUF(mac); |
3873 | ||
b481de9c | 3874 | IWL_DEBUG_RADIO("RX CONFIG:\n"); |
0a6857e7 | 3875 | iwl_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon)); |
b481de9c ZY |
3876 | IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel)); |
3877 | IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags)); | |
3878 | IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n", | |
3879 | le32_to_cpu(rxon->filter_flags)); | |
3880 | IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type); | |
3881 | IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n", | |
3882 | rxon->ofdm_basic_rates); | |
3883 | IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates); | |
0795af57 JP |
3884 | IWL_DEBUG_RADIO("u8[6] node_addr: %s\n", |
3885 | print_mac(mac, rxon->node_addr)); | |
3886 | IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n", | |
3887 | print_mac(mac, rxon->bssid_addr)); | |
b481de9c ZY |
3888 | IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id)); |
3889 | } | |
3890 | #endif | |
3891 | ||
c79dd5b5 | 3892 | static void iwl4965_enable_interrupts(struct iwl_priv *priv) |
b481de9c ZY |
3893 | { |
3894 | IWL_DEBUG_ISR("Enabling interrupts\n"); | |
3895 | set_bit(STATUS_INT_ENABLED, &priv->status); | |
3395f6e9 | 3896 | iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK); |
b481de9c ZY |
3897 | } |
3898 | ||
0359facc MA |
3899 | /* call this function to flush any scheduled tasklet */ |
3900 | static inline void iwl_synchronize_irq(struct iwl_priv *priv) | |
3901 | { | |
3902 | /* wait to make sure we flush pedding tasklet*/ | |
3903 | synchronize_irq(priv->pci_dev->irq); | |
3904 | tasklet_kill(&priv->irq_tasklet); | |
3905 | } | |
3906 | ||
c79dd5b5 | 3907 | static inline void iwl4965_disable_interrupts(struct iwl_priv *priv) |
b481de9c ZY |
3908 | { |
3909 | clear_bit(STATUS_INT_ENABLED, &priv->status); | |
3910 | ||
3911 | /* disable interrupts from uCode/NIC to host */ | |
3395f6e9 | 3912 | iwl_write32(priv, CSR_INT_MASK, 0x00000000); |
b481de9c ZY |
3913 | |
3914 | /* acknowledge/clear/reset any interrupts still pending | |
3915 | * from uCode or flow handler (Rx/Tx DMA) */ | |
3395f6e9 TW |
3916 | iwl_write32(priv, CSR_INT, 0xffffffff); |
3917 | iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff); | |
b481de9c ZY |
3918 | IWL_DEBUG_ISR("Disabled interrupts\n"); |
3919 | } | |
3920 | ||
3921 | static const char *desc_lookup(int i) | |
3922 | { | |
3923 | switch (i) { | |
3924 | case 1: | |
3925 | return "FAIL"; | |
3926 | case 2: | |
3927 | return "BAD_PARAM"; | |
3928 | case 3: | |
3929 | return "BAD_CHECKSUM"; | |
3930 | case 4: | |
3931 | return "NMI_INTERRUPT"; | |
3932 | case 5: | |
3933 | return "SYSASSERT"; | |
3934 | case 6: | |
3935 | return "FATAL_ERROR"; | |
3936 | } | |
3937 | ||
3938 | return "UNKNOWN"; | |
3939 | } | |
3940 | ||
3941 | #define ERROR_START_OFFSET (1 * sizeof(u32)) | |
3942 | #define ERROR_ELEM_SIZE (7 * sizeof(u32)) | |
3943 | ||
c79dd5b5 | 3944 | static void iwl4965_dump_nic_error_log(struct iwl_priv *priv) |
b481de9c ZY |
3945 | { |
3946 | u32 data2, line; | |
3947 | u32 desc, time, count, base, data1; | |
3948 | u32 blink1, blink2, ilink1, ilink2; | |
3949 | int rc; | |
3950 | ||
3951 | base = le32_to_cpu(priv->card_alive.error_event_table_ptr); | |
3952 | ||
57aab75a | 3953 | if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) { |
b481de9c ZY |
3954 | IWL_ERROR("Not valid error log pointer 0x%08X\n", base); |
3955 | return; | |
3956 | } | |
3957 | ||
3395f6e9 | 3958 | rc = iwl_grab_nic_access(priv); |
b481de9c ZY |
3959 | if (rc) { |
3960 | IWL_WARNING("Can not read from adapter at this time.\n"); | |
3961 | return; | |
3962 | } | |
3963 | ||
3395f6e9 | 3964 | count = iwl_read_targ_mem(priv, base); |
b481de9c ZY |
3965 | |
3966 | if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) { | |
3967 | IWL_ERROR("Start IWL Error Log Dump:\n"); | |
2acae16e | 3968 | IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count); |
b481de9c ZY |
3969 | } |
3970 | ||
3395f6e9 TW |
3971 | desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32)); |
3972 | blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32)); | |
3973 | blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32)); | |
3974 | ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32)); | |
3975 | ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32)); | |
3976 | data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32)); | |
3977 | data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32)); | |
3978 | line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32)); | |
3979 | time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32)); | |
b481de9c ZY |
3980 | |
3981 | IWL_ERROR("Desc Time " | |
3982 | "data1 data2 line\n"); | |
3983 | IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n", | |
3984 | desc_lookup(desc), desc, time, data1, data2, line); | |
3985 | IWL_ERROR("blink1 blink2 ilink1 ilink2\n"); | |
3986 | IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2, | |
3987 | ilink1, ilink2); | |
3988 | ||
3395f6e9 | 3989 | iwl_release_nic_access(priv); |
b481de9c ZY |
3990 | } |
3991 | ||
3992 | #define EVENT_START_OFFSET (4 * sizeof(u32)) | |
3993 | ||
3994 | /** | |
bb8c093b | 3995 | * iwl4965_print_event_log - Dump error event log to syslog |
b481de9c | 3996 | * |
3395f6e9 | 3997 | * NOTE: Must be called with iwl_grab_nic_access() already obtained! |
b481de9c | 3998 | */ |
c79dd5b5 | 3999 | static void iwl4965_print_event_log(struct iwl_priv *priv, u32 start_idx, |
b481de9c ZY |
4000 | u32 num_events, u32 mode) |
4001 | { | |
4002 | u32 i; | |
4003 | u32 base; /* SRAM byte address of event log header */ | |
4004 | u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */ | |
4005 | u32 ptr; /* SRAM byte address of log data */ | |
4006 | u32 ev, time, data; /* event log data */ | |
4007 | ||
4008 | if (num_events == 0) | |
4009 | return; | |
4010 | ||
4011 | base = le32_to_cpu(priv->card_alive.log_event_table_ptr); | |
4012 | ||
4013 | if (mode == 0) | |
4014 | event_size = 2 * sizeof(u32); | |
4015 | else | |
4016 | event_size = 3 * sizeof(u32); | |
4017 | ||
4018 | ptr = base + EVENT_START_OFFSET + (start_idx * event_size); | |
4019 | ||
4020 | /* "time" is actually "data" for mode 0 (no timestamp). | |
4021 | * place event id # at far right for easier visual parsing. */ | |
4022 | for (i = 0; i < num_events; i++) { | |
3395f6e9 | 4023 | ev = iwl_read_targ_mem(priv, ptr); |
b481de9c | 4024 | ptr += sizeof(u32); |
3395f6e9 | 4025 | time = iwl_read_targ_mem(priv, ptr); |
b481de9c ZY |
4026 | ptr += sizeof(u32); |
4027 | if (mode == 0) | |
4028 | IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */ | |
4029 | else { | |
3395f6e9 | 4030 | data = iwl_read_targ_mem(priv, ptr); |
b481de9c ZY |
4031 | ptr += sizeof(u32); |
4032 | IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev); | |
4033 | } | |
4034 | } | |
4035 | } | |
4036 | ||
c79dd5b5 | 4037 | static void iwl4965_dump_nic_event_log(struct iwl_priv *priv) |
b481de9c ZY |
4038 | { |
4039 | int rc; | |
4040 | u32 base; /* SRAM byte address of event log header */ | |
4041 | u32 capacity; /* event log capacity in # entries */ | |
4042 | u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */ | |
4043 | u32 num_wraps; /* # times uCode wrapped to top of log */ | |
4044 | u32 next_entry; /* index of next entry to be written by uCode */ | |
4045 | u32 size; /* # entries that we'll print */ | |
4046 | ||
4047 | base = le32_to_cpu(priv->card_alive.log_event_table_ptr); | |
57aab75a | 4048 | if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) { |
b481de9c ZY |
4049 | IWL_ERROR("Invalid event log pointer 0x%08X\n", base); |
4050 | return; | |
4051 | } | |
4052 | ||
3395f6e9 | 4053 | rc = iwl_grab_nic_access(priv); |
b481de9c ZY |
4054 | if (rc) { |
4055 | IWL_WARNING("Can not read from adapter at this time.\n"); | |
4056 | return; | |
4057 | } | |
4058 | ||
4059 | /* event log header */ | |
3395f6e9 TW |
4060 | capacity = iwl_read_targ_mem(priv, base); |
4061 | mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32))); | |
4062 | num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32))); | |
4063 | next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32))); | |
b481de9c ZY |
4064 | |
4065 | size = num_wraps ? capacity : next_entry; | |
4066 | ||
4067 | /* bail out if nothing in log */ | |
4068 | if (size == 0) { | |
583fab37 | 4069 | IWL_ERROR("Start IWL Event Log Dump: nothing in log\n"); |
3395f6e9 | 4070 | iwl_release_nic_access(priv); |
b481de9c ZY |
4071 | return; |
4072 | } | |
4073 | ||
583fab37 | 4074 | IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n", |
b481de9c ZY |
4075 | size, num_wraps); |
4076 | ||
4077 | /* if uCode has wrapped back to top of log, start at the oldest entry, | |
4078 | * i.e the next one that uCode would fill. */ | |
4079 | if (num_wraps) | |
bb8c093b | 4080 | iwl4965_print_event_log(priv, next_entry, |
b481de9c ZY |
4081 | capacity - next_entry, mode); |
4082 | ||
4083 | /* (then/else) start at top of log */ | |
bb8c093b | 4084 | iwl4965_print_event_log(priv, 0, next_entry, mode); |
b481de9c | 4085 | |
3395f6e9 | 4086 | iwl_release_nic_access(priv); |
b481de9c ZY |
4087 | } |
4088 | ||
4089 | /** | |
bb8c093b | 4090 | * iwl4965_irq_handle_error - called for HW or SW error interrupt from card |
b481de9c | 4091 | */ |
c79dd5b5 | 4092 | static void iwl4965_irq_handle_error(struct iwl_priv *priv) |
b481de9c | 4093 | { |
bb8c093b | 4094 | /* Set the FW error flag -- cleared on iwl4965_down */ |
b481de9c ZY |
4095 | set_bit(STATUS_FW_ERROR, &priv->status); |
4096 | ||
4097 | /* Cancel currently queued command. */ | |
4098 | clear_bit(STATUS_HCMD_ACTIVE, &priv->status); | |
4099 | ||
0a6857e7 TW |
4100 | #ifdef CONFIG_IWLWIFI_DEBUG |
4101 | if (iwl_debug_level & IWL_DL_FW_ERRORS) { | |
bb8c093b CH |
4102 | iwl4965_dump_nic_error_log(priv); |
4103 | iwl4965_dump_nic_event_log(priv); | |
4104 | iwl4965_print_rx_config_cmd(&priv->staging_rxon); | |
b481de9c ZY |
4105 | } |
4106 | #endif | |
4107 | ||
4108 | wake_up_interruptible(&priv->wait_command_queue); | |
4109 | ||
4110 | /* Keep the restart process from trying to send host | |
4111 | * commands by clearing the INIT status bit */ | |
4112 | clear_bit(STATUS_READY, &priv->status); | |
4113 | ||
4114 | if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) { | |
4115 | IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS, | |
4116 | "Restarting adapter due to uCode error.\n"); | |
4117 | ||
3109ece1 | 4118 | if (iwl_is_associated(priv)) { |
b481de9c ZY |
4119 | memcpy(&priv->recovery_rxon, &priv->active_rxon, |
4120 | sizeof(priv->recovery_rxon)); | |
4121 | priv->error_recovering = 1; | |
4122 | } | |
4123 | queue_work(priv->workqueue, &priv->restart); | |
4124 | } | |
4125 | } | |
4126 | ||
c79dd5b5 | 4127 | static void iwl4965_error_recovery(struct iwl_priv *priv) |
b481de9c ZY |
4128 | { |
4129 | unsigned long flags; | |
4130 | ||
4131 | memcpy(&priv->staging_rxon, &priv->recovery_rxon, | |
4132 | sizeof(priv->staging_rxon)); | |
4133 | priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; | |
bb8c093b | 4134 | iwl4965_commit_rxon(priv); |
b481de9c | 4135 | |
bb8c093b | 4136 | iwl4965_rxon_add_station(priv, priv->bssid, 1); |
b481de9c ZY |
4137 | |
4138 | spin_lock_irqsave(&priv->lock, flags); | |
4139 | priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id); | |
4140 | priv->error_recovering = 0; | |
4141 | spin_unlock_irqrestore(&priv->lock, flags); | |
4142 | } | |
4143 | ||
c79dd5b5 | 4144 | static void iwl4965_irq_tasklet(struct iwl_priv *priv) |
b481de9c ZY |
4145 | { |
4146 | u32 inta, handled = 0; | |
4147 | u32 inta_fh; | |
4148 | unsigned long flags; | |
0a6857e7 | 4149 | #ifdef CONFIG_IWLWIFI_DEBUG |
b481de9c ZY |
4150 | u32 inta_mask; |
4151 | #endif | |
4152 | ||
4153 | spin_lock_irqsave(&priv->lock, flags); | |
4154 | ||
4155 | /* Ack/clear/reset pending uCode interrupts. | |
4156 | * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS, | |
4157 | * and will clear only when CSR_FH_INT_STATUS gets cleared. */ | |
3395f6e9 TW |
4158 | inta = iwl_read32(priv, CSR_INT); |
4159 | iwl_write32(priv, CSR_INT, inta); | |
b481de9c ZY |
4160 | |
4161 | /* Ack/clear/reset pending flow-handler (DMA) interrupts. | |
4162 | * Any new interrupts that happen after this, either while we're | |
4163 | * in this tasklet, or later, will show up in next ISR/tasklet. */ | |
3395f6e9 TW |
4164 | inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS); |
4165 | iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh); | |
b481de9c | 4166 | |
0a6857e7 TW |
4167 | #ifdef CONFIG_IWLWIFI_DEBUG |
4168 | if (iwl_debug_level & IWL_DL_ISR) { | |
9fbab516 | 4169 | /* just for debug */ |
3395f6e9 | 4170 | inta_mask = iwl_read32(priv, CSR_INT_MASK); |
b481de9c ZY |
4171 | IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n", |
4172 | inta, inta_mask, inta_fh); | |
4173 | } | |
4174 | #endif | |
4175 | ||
4176 | /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not | |
4177 | * atomic, make sure that inta covers all the interrupts that | |
4178 | * we've discovered, even if FH interrupt came in just after | |
4179 | * reading CSR_INT. */ | |
6f83eaa1 | 4180 | if (inta_fh & CSR49_FH_INT_RX_MASK) |
b481de9c | 4181 | inta |= CSR_INT_BIT_FH_RX; |
6f83eaa1 | 4182 | if (inta_fh & CSR49_FH_INT_TX_MASK) |
b481de9c ZY |
4183 | inta |= CSR_INT_BIT_FH_TX; |
4184 | ||
4185 | /* Now service all interrupt bits discovered above. */ | |
4186 | if (inta & CSR_INT_BIT_HW_ERR) { | |
4187 | IWL_ERROR("Microcode HW error detected. Restarting.\n"); | |
4188 | ||
4189 | /* Tell the device to stop sending interrupts */ | |
bb8c093b | 4190 | iwl4965_disable_interrupts(priv); |
b481de9c | 4191 | |
bb8c093b | 4192 | iwl4965_irq_handle_error(priv); |
b481de9c ZY |
4193 | |
4194 | handled |= CSR_INT_BIT_HW_ERR; | |
4195 | ||
4196 | spin_unlock_irqrestore(&priv->lock, flags); | |
4197 | ||
4198 | return; | |
4199 | } | |
4200 | ||
0a6857e7 TW |
4201 | #ifdef CONFIG_IWLWIFI_DEBUG |
4202 | if (iwl_debug_level & (IWL_DL_ISR)) { | |
b481de9c | 4203 | /* NIC fires this, but we don't use it, redundant with WAKEUP */ |
25c03d8e JP |
4204 | if (inta & CSR_INT_BIT_SCD) |
4205 | IWL_DEBUG_ISR("Scheduler finished to transmit " | |
4206 | "the frame/frames.\n"); | |
b481de9c ZY |
4207 | |
4208 | /* Alive notification via Rx interrupt will do the real work */ | |
4209 | if (inta & CSR_INT_BIT_ALIVE) | |
4210 | IWL_DEBUG_ISR("Alive interrupt\n"); | |
4211 | } | |
4212 | #endif | |
4213 | /* Safely ignore these bits for debug checks below */ | |
25c03d8e | 4214 | inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE); |
b481de9c | 4215 | |
9fbab516 | 4216 | /* HW RF KILL switch toggled */ |
b481de9c ZY |
4217 | if (inta & CSR_INT_BIT_RF_KILL) { |
4218 | int hw_rf_kill = 0; | |
3395f6e9 | 4219 | if (!(iwl_read32(priv, CSR_GP_CNTRL) & |
b481de9c ZY |
4220 | CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)) |
4221 | hw_rf_kill = 1; | |
4222 | ||
4223 | IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR, | |
4224 | "RF_KILL bit toggled to %s.\n", | |
4225 | hw_rf_kill ? "disable radio":"enable radio"); | |
4226 | ||
4227 | /* Queue restart only if RF_KILL switch was set to "kill" | |
4228 | * when we loaded driver, and is now set to "enable". | |
4229 | * After we're Alive, RF_KILL gets handled by | |
3230455d | 4230 | * iwl4965_rx_card_state_notif() */ |
53e49093 ZY |
4231 | if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) { |
4232 | clear_bit(STATUS_RF_KILL_HW, &priv->status); | |
b481de9c | 4233 | queue_work(priv->workqueue, &priv->restart); |
53e49093 | 4234 | } |
b481de9c ZY |
4235 | |
4236 | handled |= CSR_INT_BIT_RF_KILL; | |
4237 | } | |
4238 | ||
9fbab516 | 4239 | /* Chip got too hot and stopped itself */ |
b481de9c ZY |
4240 | if (inta & CSR_INT_BIT_CT_KILL) { |
4241 | IWL_ERROR("Microcode CT kill error detected.\n"); | |
4242 | handled |= CSR_INT_BIT_CT_KILL; | |
4243 | } | |
4244 | ||
4245 | /* Error detected by uCode */ | |
4246 | if (inta & CSR_INT_BIT_SW_ERR) { | |
4247 | IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n", | |
4248 | inta); | |
bb8c093b | 4249 | iwl4965_irq_handle_error(priv); |
b481de9c ZY |
4250 | handled |= CSR_INT_BIT_SW_ERR; |
4251 | } | |
4252 | ||
4253 | /* uCode wakes up after power-down sleep */ | |
4254 | if (inta & CSR_INT_BIT_WAKEUP) { | |
4255 | IWL_DEBUG_ISR("Wakeup interrupt\n"); | |
bb8c093b CH |
4256 | iwl4965_rx_queue_update_write_ptr(priv, &priv->rxq); |
4257 | iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]); | |
4258 | iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]); | |
4259 | iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]); | |
4260 | iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]); | |
4261 | iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]); | |
4262 | iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]); | |
b481de9c ZY |
4263 | |
4264 | handled |= CSR_INT_BIT_WAKEUP; | |
4265 | } | |
4266 | ||
4267 | /* All uCode command responses, including Tx command responses, | |
4268 | * Rx "responses" (frame-received notification), and other | |
4269 | * notifications from uCode come through here*/ | |
4270 | if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) { | |
bb8c093b | 4271 | iwl4965_rx_handle(priv); |
b481de9c ZY |
4272 | handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX); |
4273 | } | |
4274 | ||
4275 | if (inta & CSR_INT_BIT_FH_TX) { | |
4276 | IWL_DEBUG_ISR("Tx interrupt\n"); | |
4277 | handled |= CSR_INT_BIT_FH_TX; | |
4278 | } | |
4279 | ||
4280 | if (inta & ~handled) | |
4281 | IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled); | |
4282 | ||
4283 | if (inta & ~CSR_INI_SET_MASK) { | |
4284 | IWL_WARNING("Disabled INTA bits 0x%08x were pending\n", | |
4285 | inta & ~CSR_INI_SET_MASK); | |
4286 | IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh); | |
4287 | } | |
4288 | ||
4289 | /* Re-enable all interrupts */ | |
0359facc MA |
4290 | /* only Re-enable if diabled by irq */ |
4291 | if (test_bit(STATUS_INT_ENABLED, &priv->status)) | |
4292 | iwl4965_enable_interrupts(priv); | |
b481de9c | 4293 | |
0a6857e7 TW |
4294 | #ifdef CONFIG_IWLWIFI_DEBUG |
4295 | if (iwl_debug_level & (IWL_DL_ISR)) { | |
3395f6e9 TW |
4296 | inta = iwl_read32(priv, CSR_INT); |
4297 | inta_mask = iwl_read32(priv, CSR_INT_MASK); | |
4298 | inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS); | |
b481de9c ZY |
4299 | IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, " |
4300 | "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags); | |
4301 | } | |
4302 | #endif | |
4303 | spin_unlock_irqrestore(&priv->lock, flags); | |
4304 | } | |
4305 | ||
bb8c093b | 4306 | static irqreturn_t iwl4965_isr(int irq, void *data) |
b481de9c | 4307 | { |
c79dd5b5 | 4308 | struct iwl_priv *priv = data; |
b481de9c ZY |
4309 | u32 inta, inta_mask; |
4310 | u32 inta_fh; | |
4311 | if (!priv) | |
4312 | return IRQ_NONE; | |
4313 | ||
4314 | spin_lock(&priv->lock); | |
4315 | ||
4316 | /* Disable (but don't clear!) interrupts here to avoid | |
4317 | * back-to-back ISRs and sporadic interrupts from our NIC. | |
4318 | * If we have something to service, the tasklet will re-enable ints. | |
4319 | * If we *don't* have something, we'll re-enable before leaving here. */ | |
3395f6e9 TW |
4320 | inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */ |
4321 | iwl_write32(priv, CSR_INT_MASK, 0x00000000); | |
b481de9c ZY |
4322 | |
4323 | /* Discover which interrupts are active/pending */ | |
3395f6e9 TW |
4324 | inta = iwl_read32(priv, CSR_INT); |
4325 | inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS); | |
b481de9c ZY |
4326 | |
4327 | /* Ignore interrupt if there's nothing in NIC to service. | |
4328 | * This may be due to IRQ shared with another device, | |
4329 | * or due to sporadic interrupts thrown from our NIC. */ | |
4330 | if (!inta && !inta_fh) { | |
4331 | IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n"); | |
4332 | goto none; | |
4333 | } | |
4334 | ||
4335 | if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) { | |
66fbb541 ON |
4336 | /* Hardware disappeared. It might have already raised |
4337 | * an interrupt */ | |
b481de9c | 4338 | IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta); |
66fbb541 | 4339 | goto unplugged; |
b481de9c ZY |
4340 | } |
4341 | ||
4342 | IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n", | |
4343 | inta, inta_mask, inta_fh); | |
4344 | ||
25c03d8e JP |
4345 | inta &= ~CSR_INT_BIT_SCD; |
4346 | ||
bb8c093b | 4347 | /* iwl4965_irq_tasklet() will service interrupts and re-enable them */ |
25c03d8e JP |
4348 | if (likely(inta || inta_fh)) |
4349 | tasklet_schedule(&priv->irq_tasklet); | |
b481de9c | 4350 | |
66fbb541 ON |
4351 | unplugged: |
4352 | spin_unlock(&priv->lock); | |
b481de9c ZY |
4353 | return IRQ_HANDLED; |
4354 | ||
4355 | none: | |
4356 | /* re-enable interrupts here since we don't have anything to service. */ | |
0359facc MA |
4357 | /* only Re-enable if diabled by irq */ |
4358 | if (test_bit(STATUS_INT_ENABLED, &priv->status)) | |
4359 | iwl4965_enable_interrupts(priv); | |
b481de9c ZY |
4360 | spin_unlock(&priv->lock); |
4361 | return IRQ_NONE; | |
4362 | } | |
4363 | ||
b481de9c ZY |
4364 | /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after |
4365 | * sending probe req. This should be set long enough to hear probe responses | |
4366 | * from more than one AP. */ | |
4367 | #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */ | |
4368 | #define IWL_ACTIVE_DWELL_TIME_52 (10) | |
4369 | ||
4370 | /* For faster active scanning, scan will move to the next channel if fewer than | |
4371 | * PLCP_QUIET_THRESH packets are heard on this channel within | |
4372 | * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell | |
4373 | * time if it's a quiet channel (nothing responded to our probe, and there's | |
4374 | * no other traffic). | |
4375 | * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */ | |
4376 | #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */ | |
4377 | #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */ | |
4378 | ||
4379 | /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel. | |
4380 | * Must be set longer than active dwell time. | |
4381 | * For the most reliable scan, set > AP beacon interval (typically 100msec). */ | |
4382 | #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */ | |
4383 | #define IWL_PASSIVE_DWELL_TIME_52 (10) | |
4384 | #define IWL_PASSIVE_DWELL_BASE (100) | |
4385 | #define IWL_CHANNEL_TUNE_TIME 5 | |
4386 | ||
c79dd5b5 | 4387 | static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv, |
8318d78a | 4388 | enum ieee80211_band band) |
b481de9c | 4389 | { |
8318d78a | 4390 | if (band == IEEE80211_BAND_5GHZ) |
b481de9c ZY |
4391 | return IWL_ACTIVE_DWELL_TIME_52; |
4392 | else | |
4393 | return IWL_ACTIVE_DWELL_TIME_24; | |
4394 | } | |
4395 | ||
c79dd5b5 | 4396 | static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv, |
8318d78a | 4397 | enum ieee80211_band band) |
b481de9c | 4398 | { |
8318d78a JB |
4399 | u16 active = iwl4965_get_active_dwell_time(priv, band); |
4400 | u16 passive = (band != IEEE80211_BAND_5GHZ) ? | |
b481de9c ZY |
4401 | IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 : |
4402 | IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52; | |
4403 | ||
3109ece1 | 4404 | if (iwl_is_associated(priv)) { |
b481de9c ZY |
4405 | /* If we're associated, we clamp the maximum passive |
4406 | * dwell time to be 98% of the beacon interval (minus | |
4407 | * 2 * channel tune time) */ | |
4408 | passive = priv->beacon_int; | |
4409 | if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive) | |
4410 | passive = IWL_PASSIVE_DWELL_BASE; | |
4411 | passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2; | |
4412 | } | |
4413 | ||
4414 | if (passive <= active) | |
4415 | passive = active + 1; | |
4416 | ||
4417 | return passive; | |
4418 | } | |
4419 | ||
c79dd5b5 | 4420 | static int iwl4965_get_channels_for_scan(struct iwl_priv *priv, |
8318d78a | 4421 | enum ieee80211_band band, |
b481de9c | 4422 | u8 is_active, u8 direct_mask, |
bb8c093b | 4423 | struct iwl4965_scan_channel *scan_ch) |
b481de9c ZY |
4424 | { |
4425 | const struct ieee80211_channel *channels = NULL; | |
8318d78a | 4426 | const struct ieee80211_supported_band *sband; |
bf85ea4f | 4427 | const struct iwl_channel_info *ch_info; |
b481de9c ZY |
4428 | u16 passive_dwell = 0; |
4429 | u16 active_dwell = 0; | |
4430 | int added, i; | |
4431 | ||
d1141dfb | 4432 | sband = iwl_get_hw_mode(priv, band); |
8318d78a | 4433 | if (!sband) |
b481de9c ZY |
4434 | return 0; |
4435 | ||
8318d78a | 4436 | channels = sband->channels; |
b481de9c | 4437 | |
8318d78a JB |
4438 | active_dwell = iwl4965_get_active_dwell_time(priv, band); |
4439 | passive_dwell = iwl4965_get_passive_dwell_time(priv, band); | |
b481de9c | 4440 | |
8318d78a | 4441 | for (i = 0, added = 0; i < sband->n_channels; i++) { |
182e2e66 JB |
4442 | if (channels[i].flags & IEEE80211_CHAN_DISABLED) |
4443 | continue; | |
4444 | ||
8318d78a | 4445 | scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq); |
b481de9c | 4446 | |
8622e705 | 4447 | ch_info = iwl_get_channel_info(priv, band, |
9fbab516 | 4448 | scan_ch->channel); |
b481de9c ZY |
4449 | if (!is_channel_valid(ch_info)) { |
4450 | IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n", | |
4451 | scan_ch->channel); | |
4452 | continue; | |
4453 | } | |
4454 | ||
4455 | if (!is_active || is_channel_passive(ch_info) || | |
8318d78a | 4456 | (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN)) |
b481de9c ZY |
4457 | scan_ch->type = 0; /* passive */ |
4458 | else | |
4459 | scan_ch->type = 1; /* active */ | |
4460 | ||
4461 | if (scan_ch->type & 1) | |
4462 | scan_ch->type |= (direct_mask << 1); | |
4463 | ||
b481de9c ZY |
4464 | scan_ch->active_dwell = cpu_to_le16(active_dwell); |
4465 | scan_ch->passive_dwell = cpu_to_le16(passive_dwell); | |
4466 | ||
9fbab516 | 4467 | /* Set txpower levels to defaults */ |
b481de9c ZY |
4468 | scan_ch->tpc.dsp_atten = 110; |
4469 | /* scan_pwr_info->tpc.dsp_atten; */ | |
4470 | ||
4471 | /*scan_pwr_info->tpc.tx_gain; */ | |
8318d78a | 4472 | if (band == IEEE80211_BAND_5GHZ) |
b481de9c ZY |
4473 | scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3; |
4474 | else { | |
4475 | scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3)); | |
4476 | /* NOTE: if we were doing 6Mb OFDM for scans we'd use | |
9fbab516 | 4477 | * power level: |
8a1b0245 | 4478 | * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3; |
b481de9c ZY |
4479 | */ |
4480 | } | |
4481 | ||
4482 | IWL_DEBUG_SCAN("Scanning %d [%s %d]\n", | |
4483 | scan_ch->channel, | |
4484 | (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE", | |
4485 | (scan_ch->type & 1) ? | |
4486 | active_dwell : passive_dwell); | |
4487 | ||
4488 | scan_ch++; | |
4489 | added++; | |
4490 | } | |
4491 | ||
4492 | IWL_DEBUG_SCAN("total channels to scan %d \n", added); | |
4493 | return added; | |
4494 | } | |
4495 | ||
c79dd5b5 | 4496 | static void iwl4965_init_hw_rates(struct iwl_priv *priv, |
b481de9c ZY |
4497 | struct ieee80211_rate *rates) |
4498 | { | |
4499 | int i; | |
4500 | ||
4501 | for (i = 0; i < IWL_RATE_COUNT; i++) { | |
8318d78a JB |
4502 | rates[i].bitrate = iwl4965_rates[i].ieee * 5; |
4503 | rates[i].hw_value = i; /* Rate scaling will work on indexes */ | |
4504 | rates[i].hw_value_short = i; | |
4505 | rates[i].flags = 0; | |
4506 | if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) { | |
b481de9c | 4507 | /* |
8318d78a | 4508 | * If CCK != 1M then set short preamble rate flag. |
b481de9c | 4509 | */ |
35cdeaf4 TW |
4510 | rates[i].flags |= |
4511 | (iwl4965_rates[i].plcp == IWL_RATE_1M_PLCP) ? | |
4512 | 0 : IEEE80211_RATE_SHORT_PREAMBLE; | |
b481de9c | 4513 | } |
b481de9c | 4514 | } |
b481de9c ZY |
4515 | } |
4516 | ||
4517 | /** | |
bb8c093b | 4518 | * iwl4965_init_geos - Initialize mac80211's geo/channel info based from eeprom |
b481de9c | 4519 | */ |
bf85ea4f | 4520 | int iwl4965_init_geos(struct iwl_priv *priv) |
b481de9c | 4521 | { |
bf85ea4f | 4522 | struct iwl_channel_info *ch; |
8211ef78 | 4523 | struct ieee80211_supported_band *sband; |
b481de9c ZY |
4524 | struct ieee80211_channel *channels; |
4525 | struct ieee80211_channel *geo_ch; | |
4526 | struct ieee80211_rate *rates; | |
4527 | int i = 0; | |
b481de9c | 4528 | |
8318d78a JB |
4529 | if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates || |
4530 | priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) { | |
b481de9c ZY |
4531 | IWL_DEBUG_INFO("Geography modes already initialized.\n"); |
4532 | set_bit(STATUS_GEO_CONFIGURED, &priv->status); | |
4533 | return 0; | |
4534 | } | |
4535 | ||
b481de9c ZY |
4536 | channels = kzalloc(sizeof(struct ieee80211_channel) * |
4537 | priv->channel_count, GFP_KERNEL); | |
8318d78a | 4538 | if (!channels) |
b481de9c | 4539 | return -ENOMEM; |
b481de9c | 4540 | |
8211ef78 | 4541 | rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)), |
b481de9c ZY |
4542 | GFP_KERNEL); |
4543 | if (!rates) { | |
b481de9c ZY |
4544 | kfree(channels); |
4545 | return -ENOMEM; | |
4546 | } | |
4547 | ||
b481de9c | 4548 | /* 5.2GHz channels start after the 2.4GHz channels */ |
8211ef78 | 4549 | sband = &priv->bands[IEEE80211_BAND_5GHZ]; |
bf85ea4f | 4550 | sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)]; |
8211ef78 TW |
4551 | /* just OFDM */ |
4552 | sband->bitrates = &rates[IWL_FIRST_OFDM_RATE]; | |
4553 | sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE; | |
8318d78a | 4554 | |
1ea87396 | 4555 | iwl4965_init_ht_hw_capab(priv, &sband->ht_info, IEEE80211_BAND_5GHZ); |
78330fdd | 4556 | |
8211ef78 TW |
4557 | sband = &priv->bands[IEEE80211_BAND_2GHZ]; |
4558 | sband->channels = channels; | |
4559 | /* OFDM & CCK */ | |
4560 | sband->bitrates = rates; | |
4561 | sband->n_bitrates = IWL_RATE_COUNT; | |
b481de9c | 4562 | |
1ea87396 | 4563 | iwl4965_init_ht_hw_capab(priv, &sband->ht_info, IEEE80211_BAND_2GHZ); |
78330fdd | 4564 | |
b481de9c ZY |
4565 | priv->ieee_channels = channels; |
4566 | priv->ieee_rates = rates; | |
4567 | ||
bb8c093b | 4568 | iwl4965_init_hw_rates(priv, rates); |
b481de9c | 4569 | |
8211ef78 | 4570 | for (i = 0; i < priv->channel_count; i++) { |
b481de9c ZY |
4571 | ch = &priv->channel_info[i]; |
4572 | ||
8211ef78 TW |
4573 | /* FIXME: might be removed if scan is OK */ |
4574 | if (!is_channel_valid(ch)) | |
b481de9c | 4575 | continue; |
b481de9c | 4576 | |
8211ef78 TW |
4577 | if (is_channel_a_band(ch)) |
4578 | sband = &priv->bands[IEEE80211_BAND_5GHZ]; | |
4579 | else | |
4580 | sband = &priv->bands[IEEE80211_BAND_2GHZ]; | |
b481de9c | 4581 | |
8211ef78 TW |
4582 | geo_ch = &sband->channels[sband->n_channels++]; |
4583 | ||
4584 | geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel); | |
8318d78a JB |
4585 | geo_ch->max_power = ch->max_power_avg; |
4586 | geo_ch->max_antenna_gain = 0xff; | |
7b72304d | 4587 | geo_ch->hw_value = ch->channel; |
b481de9c ZY |
4588 | |
4589 | if (is_channel_valid(ch)) { | |
8318d78a JB |
4590 | if (!(ch->flags & EEPROM_CHANNEL_IBSS)) |
4591 | geo_ch->flags |= IEEE80211_CHAN_NO_IBSS; | |
b481de9c | 4592 | |
8318d78a JB |
4593 | if (!(ch->flags & EEPROM_CHANNEL_ACTIVE)) |
4594 | geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN; | |
b481de9c ZY |
4595 | |
4596 | if (ch->flags & EEPROM_CHANNEL_RADAR) | |
8318d78a | 4597 | geo_ch->flags |= IEEE80211_CHAN_RADAR; |
b481de9c ZY |
4598 | |
4599 | if (ch->max_power_avg > priv->max_channel_txpower_limit) | |
4600 | priv->max_channel_txpower_limit = | |
4601 | ch->max_power_avg; | |
8211ef78 | 4602 | } else { |
8318d78a | 4603 | geo_ch->flags |= IEEE80211_CHAN_DISABLED; |
8211ef78 TW |
4604 | } |
4605 | ||
4606 | /* Save flags for reg domain usage */ | |
4607 | geo_ch->orig_flags = geo_ch->flags; | |
4608 | ||
4609 | IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n", | |
4610 | ch->channel, geo_ch->center_freq, | |
4611 | is_channel_a_band(ch) ? "5.2" : "2.4", | |
4612 | geo_ch->flags & IEEE80211_CHAN_DISABLED ? | |
4613 | "restricted" : "valid", | |
4614 | geo_ch->flags); | |
b481de9c ZY |
4615 | } |
4616 | ||
82b9a121 TW |
4617 | if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) && |
4618 | priv->cfg->sku & IWL_SKU_A) { | |
b481de9c ZY |
4619 | printk(KERN_INFO DRV_NAME |
4620 | ": Incorrectly detected BG card as ABG. Please send " | |
4621 | "your PCI ID 0x%04X:0x%04X to maintainer.\n", | |
4622 | priv->pci_dev->device, priv->pci_dev->subsystem_device); | |
82b9a121 | 4623 | priv->cfg->sku &= ~IWL_SKU_A; |
b481de9c ZY |
4624 | } |
4625 | ||
4626 | printk(KERN_INFO DRV_NAME | |
4627 | ": Tunable channels: %d 802.11bg, %d 802.11a channels\n", | |
8318d78a JB |
4628 | priv->bands[IEEE80211_BAND_2GHZ].n_channels, |
4629 | priv->bands[IEEE80211_BAND_5GHZ].n_channels); | |
b481de9c | 4630 | |
e0e0a67e JL |
4631 | if (priv->bands[IEEE80211_BAND_2GHZ].n_channels) |
4632 | priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = | |
4633 | &priv->bands[IEEE80211_BAND_2GHZ]; | |
4634 | if (priv->bands[IEEE80211_BAND_5GHZ].n_channels) | |
4635 | priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = | |
4636 | &priv->bands[IEEE80211_BAND_5GHZ]; | |
b481de9c | 4637 | |
b481de9c ZY |
4638 | set_bit(STATUS_GEO_CONFIGURED, &priv->status); |
4639 | ||
4640 | return 0; | |
4641 | } | |
4642 | ||
849e0dce RC |
4643 | /* |
4644 | * iwl4965_free_geos - undo allocations in iwl4965_init_geos | |
4645 | */ | |
bf85ea4f | 4646 | void iwl4965_free_geos(struct iwl_priv *priv) |
849e0dce | 4647 | { |
849e0dce RC |
4648 | kfree(priv->ieee_channels); |
4649 | kfree(priv->ieee_rates); | |
4650 | clear_bit(STATUS_GEO_CONFIGURED, &priv->status); | |
4651 | } | |
4652 | ||
b481de9c ZY |
4653 | /****************************************************************************** |
4654 | * | |
4655 | * uCode download functions | |
4656 | * | |
4657 | ******************************************************************************/ | |
4658 | ||
c79dd5b5 | 4659 | static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv) |
b481de9c | 4660 | { |
98c92211 TW |
4661 | iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code); |
4662 | iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data); | |
4663 | iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup); | |
4664 | iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init); | |
4665 | iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data); | |
4666 | iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot); | |
b481de9c ZY |
4667 | } |
4668 | ||
4669 | /** | |
bb8c093b | 4670 | * iwl4965_verify_inst_full - verify runtime uCode image in card vs. host, |
b481de9c ZY |
4671 | * looking at all data. |
4672 | */ | |
c79dd5b5 | 4673 | static int iwl4965_verify_inst_full(struct iwl_priv *priv, __le32 *image, |
9fbab516 | 4674 | u32 len) |
b481de9c ZY |
4675 | { |
4676 | u32 val; | |
4677 | u32 save_len = len; | |
4678 | int rc = 0; | |
4679 | u32 errcnt; | |
4680 | ||
4681 | IWL_DEBUG_INFO("ucode inst image size is %u\n", len); | |
4682 | ||
3395f6e9 | 4683 | rc = iwl_grab_nic_access(priv); |
b481de9c ZY |
4684 | if (rc) |
4685 | return rc; | |
4686 | ||
3395f6e9 | 4687 | iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND); |
b481de9c ZY |
4688 | |
4689 | errcnt = 0; | |
4690 | for (; len > 0; len -= sizeof(u32), image++) { | |
4691 | /* read data comes through single port, auto-incr addr */ | |
4692 | /* NOTE: Use the debugless read so we don't flood kernel log | |
4693 | * if IWL_DL_IO is set */ | |
3395f6e9 | 4694 | val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT); |
b481de9c ZY |
4695 | if (val != le32_to_cpu(*image)) { |
4696 | IWL_ERROR("uCode INST section is invalid at " | |
4697 | "offset 0x%x, is 0x%x, s/b 0x%x\n", | |
4698 | save_len - len, val, le32_to_cpu(*image)); | |
4699 | rc = -EIO; | |
4700 | errcnt++; | |
4701 | if (errcnt >= 20) | |
4702 | break; | |
4703 | } | |
4704 | } | |
4705 | ||
3395f6e9 | 4706 | iwl_release_nic_access(priv); |
b481de9c ZY |
4707 | |
4708 | if (!errcnt) | |
4709 | IWL_DEBUG_INFO | |
4710 | ("ucode image in INSTRUCTION memory is good\n"); | |
4711 | ||
4712 | return rc; | |
4713 | } | |
4714 | ||
4715 | ||
4716 | /** | |
bb8c093b | 4717 | * iwl4965_verify_inst_sparse - verify runtime uCode image in card vs. host, |
b481de9c ZY |
4718 | * using sample data 100 bytes apart. If these sample points are good, |
4719 | * it's a pretty good bet that everything between them is good, too. | |
4720 | */ | |
c79dd5b5 | 4721 | static int iwl4965_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len) |
b481de9c ZY |
4722 | { |
4723 | u32 val; | |
4724 | int rc = 0; | |
4725 | u32 errcnt = 0; | |
4726 | u32 i; | |
4727 | ||
4728 | IWL_DEBUG_INFO("ucode inst image size is %u\n", len); | |
4729 | ||
3395f6e9 | 4730 | rc = iwl_grab_nic_access(priv); |
b481de9c ZY |
4731 | if (rc) |
4732 | return rc; | |
4733 | ||
4734 | for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) { | |
4735 | /* read data comes through single port, auto-incr addr */ | |
4736 | /* NOTE: Use the debugless read so we don't flood kernel log | |
4737 | * if IWL_DL_IO is set */ | |
3395f6e9 | 4738 | iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, |
b481de9c | 4739 | i + RTC_INST_LOWER_BOUND); |
3395f6e9 | 4740 | val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT); |
b481de9c ZY |
4741 | if (val != le32_to_cpu(*image)) { |
4742 | #if 0 /* Enable this if you want to see details */ | |
4743 | IWL_ERROR("uCode INST section is invalid at " | |
4744 | "offset 0x%x, is 0x%x, s/b 0x%x\n", | |
4745 | i, val, *image); | |
4746 | #endif | |
4747 | rc = -EIO; | |
4748 | errcnt++; | |
4749 | if (errcnt >= 3) | |
4750 | break; | |
4751 | } | |
4752 | } | |
4753 | ||
3395f6e9 | 4754 | iwl_release_nic_access(priv); |
b481de9c ZY |
4755 | |
4756 | return rc; | |
4757 | } | |
4758 | ||
4759 | ||
4760 | /** | |
bb8c093b | 4761 | * iwl4965_verify_ucode - determine which instruction image is in SRAM, |
b481de9c ZY |
4762 | * and verify its contents |
4763 | */ | |
c79dd5b5 | 4764 | static int iwl4965_verify_ucode(struct iwl_priv *priv) |
b481de9c ZY |
4765 | { |
4766 | __le32 *image; | |
4767 | u32 len; | |
4768 | int rc = 0; | |
4769 | ||
4770 | /* Try bootstrap */ | |
4771 | image = (__le32 *)priv->ucode_boot.v_addr; | |
4772 | len = priv->ucode_boot.len; | |
bb8c093b | 4773 | rc = iwl4965_verify_inst_sparse(priv, image, len); |
b481de9c ZY |
4774 | if (rc == 0) { |
4775 | IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n"); | |
4776 | return 0; | |
4777 | } | |
4778 | ||
4779 | /* Try initialize */ | |
4780 | image = (__le32 *)priv->ucode_init.v_addr; | |
4781 | len = priv->ucode_init.len; | |
bb8c093b | 4782 | rc = iwl4965_verify_inst_sparse(priv, image, len); |
b481de9c ZY |
4783 | if (rc == 0) { |
4784 | IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n"); | |
4785 | return 0; | |
4786 | } | |
4787 | ||
4788 | /* Try runtime/protocol */ | |
4789 | image = (__le32 *)priv->ucode_code.v_addr; | |
4790 | len = priv->ucode_code.len; | |
bb8c093b | 4791 | rc = iwl4965_verify_inst_sparse(priv, image, len); |
b481de9c ZY |
4792 | if (rc == 0) { |
4793 | IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n"); | |
4794 | return 0; | |
4795 | } | |
4796 | ||
4797 | IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n"); | |
4798 | ||
9fbab516 BC |
4799 | /* Since nothing seems to match, show first several data entries in |
4800 | * instruction SRAM, so maybe visual inspection will give a clue. | |
4801 | * Selection of bootstrap image (vs. other images) is arbitrary. */ | |
b481de9c ZY |
4802 | image = (__le32 *)priv->ucode_boot.v_addr; |
4803 | len = priv->ucode_boot.len; | |
bb8c093b | 4804 | rc = iwl4965_verify_inst_full(priv, image, len); |
b481de9c ZY |
4805 | |
4806 | return rc; | |
4807 | } | |
4808 | ||
c79dd5b5 | 4809 | static void iwl4965_nic_start(struct iwl_priv *priv) |
b481de9c ZY |
4810 | { |
4811 | /* Remove all resets to allow NIC to operate */ | |
3395f6e9 | 4812 | iwl_write32(priv, CSR_RESET, 0); |
b481de9c ZY |
4813 | } |
4814 | ||
90e759d1 | 4815 | |
b481de9c | 4816 | /** |
bb8c093b | 4817 | * iwl4965_read_ucode - Read uCode images from disk file. |
b481de9c ZY |
4818 | * |
4819 | * Copy into buffers for card to fetch via bus-mastering | |
4820 | */ | |
c79dd5b5 | 4821 | static int iwl4965_read_ucode(struct iwl_priv *priv) |
b481de9c | 4822 | { |
bb8c093b | 4823 | struct iwl4965_ucode *ucode; |
90e759d1 | 4824 | int ret; |
b481de9c | 4825 | const struct firmware *ucode_raw; |
4bf775cd | 4826 | const char *name = priv->cfg->fw_name; |
b481de9c ZY |
4827 | u8 *src; |
4828 | size_t len; | |
4829 | u32 ver, inst_size, data_size, init_size, init_data_size, boot_size; | |
4830 | ||
4831 | /* Ask kernel firmware_class module to get the boot firmware off disk. | |
4832 | * request_firmware() is synchronous, file is in memory on return. */ | |
90e759d1 TW |
4833 | ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev); |
4834 | if (ret < 0) { | |
4835 | IWL_ERROR("%s firmware file req failed: Reason %d\n", | |
4836 | name, ret); | |
b481de9c ZY |
4837 | goto error; |
4838 | } | |
4839 | ||
4840 | IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n", | |
4841 | name, ucode_raw->size); | |
4842 | ||
4843 | /* Make sure that we got at least our header! */ | |
4844 | if (ucode_raw->size < sizeof(*ucode)) { | |
4845 | IWL_ERROR("File size way too small!\n"); | |
90e759d1 | 4846 | ret = -EINVAL; |
b481de9c ZY |
4847 | goto err_release; |
4848 | } | |
4849 | ||
4850 | /* Data from ucode file: header followed by uCode images */ | |
4851 | ucode = (void *)ucode_raw->data; | |
4852 | ||
4853 | ver = le32_to_cpu(ucode->ver); | |
4854 | inst_size = le32_to_cpu(ucode->inst_size); | |
4855 | data_size = le32_to_cpu(ucode->data_size); | |
4856 | init_size = le32_to_cpu(ucode->init_size); | |
4857 | init_data_size = le32_to_cpu(ucode->init_data_size); | |
4858 | boot_size = le32_to_cpu(ucode->boot_size); | |
4859 | ||
4860 | IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver); | |
4861 | IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n", | |
4862 | inst_size); | |
4863 | IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n", | |
4864 | data_size); | |
4865 | IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n", | |
4866 | init_size); | |
4867 | IWL_DEBUG_INFO("f/w package hdr init data size = %u\n", | |
4868 | init_data_size); | |
4869 | IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n", | |
4870 | boot_size); | |
4871 | ||
4872 | /* Verify size of file vs. image size info in file's header */ | |
4873 | if (ucode_raw->size < sizeof(*ucode) + | |
4874 | inst_size + data_size + init_size + | |
4875 | init_data_size + boot_size) { | |
4876 | ||
4877 | IWL_DEBUG_INFO("uCode file size %d too small\n", | |
4878 | (int)ucode_raw->size); | |
90e759d1 | 4879 | ret = -EINVAL; |
b481de9c ZY |
4880 | goto err_release; |
4881 | } | |
4882 | ||
4883 | /* Verify that uCode images will fit in card's SRAM */ | |
099b40b7 | 4884 | if (inst_size > priv->hw_params.max_inst_size) { |
90e759d1 TW |
4885 | IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n", |
4886 | inst_size); | |
4887 | ret = -EINVAL; | |
b481de9c ZY |
4888 | goto err_release; |
4889 | } | |
4890 | ||
099b40b7 | 4891 | if (data_size > priv->hw_params.max_data_size) { |
90e759d1 TW |
4892 | IWL_DEBUG_INFO("uCode data len %d too large to fit in\n", |
4893 | data_size); | |
4894 | ret = -EINVAL; | |
b481de9c ZY |
4895 | goto err_release; |
4896 | } | |
099b40b7 | 4897 | if (init_size > priv->hw_params.max_inst_size) { |
b481de9c | 4898 | IWL_DEBUG_INFO |
90e759d1 TW |
4899 | ("uCode init instr len %d too large to fit in\n", |
4900 | init_size); | |
4901 | ret = -EINVAL; | |
b481de9c ZY |
4902 | goto err_release; |
4903 | } | |
099b40b7 | 4904 | if (init_data_size > priv->hw_params.max_data_size) { |
b481de9c | 4905 | IWL_DEBUG_INFO |
90e759d1 TW |
4906 | ("uCode init data len %d too large to fit in\n", |
4907 | init_data_size); | |
4908 | ret = -EINVAL; | |
b481de9c ZY |
4909 | goto err_release; |
4910 | } | |
099b40b7 | 4911 | if (boot_size > priv->hw_params.max_bsm_size) { |
b481de9c | 4912 | IWL_DEBUG_INFO |
90e759d1 TW |
4913 | ("uCode boot instr len %d too large to fit in\n", |
4914 | boot_size); | |
4915 | ret = -EINVAL; | |
b481de9c ZY |
4916 | goto err_release; |
4917 | } | |
4918 | ||
4919 | /* Allocate ucode buffers for card's bus-master loading ... */ | |
4920 | ||
4921 | /* Runtime instructions and 2 copies of data: | |
4922 | * 1) unmodified from disk | |
4923 | * 2) backup cache for save/restore during power-downs */ | |
4924 | priv->ucode_code.len = inst_size; | |
98c92211 | 4925 | iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code); |
b481de9c ZY |
4926 | |
4927 | priv->ucode_data.len = data_size; | |
98c92211 | 4928 | iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data); |
b481de9c ZY |
4929 | |
4930 | priv->ucode_data_backup.len = data_size; | |
98c92211 | 4931 | iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup); |
b481de9c ZY |
4932 | |
4933 | /* Initialization instructions and data */ | |
90e759d1 TW |
4934 | if (init_size && init_data_size) { |
4935 | priv->ucode_init.len = init_size; | |
98c92211 | 4936 | iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init); |
90e759d1 TW |
4937 | |
4938 | priv->ucode_init_data.len = init_data_size; | |
98c92211 | 4939 | iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data); |
90e759d1 TW |
4940 | |
4941 | if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr) | |
4942 | goto err_pci_alloc; | |
4943 | } | |
b481de9c ZY |
4944 | |
4945 | /* Bootstrap (instructions only, no data) */ | |
90e759d1 TW |
4946 | if (boot_size) { |
4947 | priv->ucode_boot.len = boot_size; | |
98c92211 | 4948 | iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot); |
b481de9c | 4949 | |
90e759d1 TW |
4950 | if (!priv->ucode_boot.v_addr) |
4951 | goto err_pci_alloc; | |
4952 | } | |
b481de9c ZY |
4953 | |
4954 | /* Copy images into buffers for card's bus-master reads ... */ | |
4955 | ||
4956 | /* Runtime instructions (first block of data in file) */ | |
4957 | src = &ucode->data[0]; | |
4958 | len = priv->ucode_code.len; | |
90e759d1 | 4959 | IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len); |
b481de9c ZY |
4960 | memcpy(priv->ucode_code.v_addr, src, len); |
4961 | IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n", | |
4962 | priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr); | |
4963 | ||
4964 | /* Runtime data (2nd block) | |
bb8c093b | 4965 | * NOTE: Copy into backup buffer will be done in iwl4965_up() */ |
b481de9c ZY |
4966 | src = &ucode->data[inst_size]; |
4967 | len = priv->ucode_data.len; | |
90e759d1 | 4968 | IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len); |
b481de9c ZY |
4969 | memcpy(priv->ucode_data.v_addr, src, len); |
4970 | memcpy(priv->ucode_data_backup.v_addr, src, len); | |
4971 | ||
4972 | /* Initialization instructions (3rd block) */ | |
4973 | if (init_size) { | |
4974 | src = &ucode->data[inst_size + data_size]; | |
4975 | len = priv->ucode_init.len; | |
90e759d1 TW |
4976 | IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n", |
4977 | len); | |
b481de9c ZY |
4978 | memcpy(priv->ucode_init.v_addr, src, len); |
4979 | } | |
4980 | ||
4981 | /* Initialization data (4th block) */ | |
4982 | if (init_data_size) { | |
4983 | src = &ucode->data[inst_size + data_size + init_size]; | |
4984 | len = priv->ucode_init_data.len; | |
90e759d1 TW |
4985 | IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n", |
4986 | len); | |
b481de9c ZY |
4987 | memcpy(priv->ucode_init_data.v_addr, src, len); |
4988 | } | |
4989 | ||
4990 | /* Bootstrap instructions (5th block) */ | |
4991 | src = &ucode->data[inst_size + data_size + init_size + init_data_size]; | |
4992 | len = priv->ucode_boot.len; | |
90e759d1 | 4993 | IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len); |
b481de9c ZY |
4994 | memcpy(priv->ucode_boot.v_addr, src, len); |
4995 | ||
4996 | /* We have our copies now, allow OS release its copies */ | |
4997 | release_firmware(ucode_raw); | |
4998 | return 0; | |
4999 | ||
5000 | err_pci_alloc: | |
5001 | IWL_ERROR("failed to allocate pci memory\n"); | |
90e759d1 | 5002 | ret = -ENOMEM; |
bb8c093b | 5003 | iwl4965_dealloc_ucode_pci(priv); |
b481de9c ZY |
5004 | |
5005 | err_release: | |
5006 | release_firmware(ucode_raw); | |
5007 | ||
5008 | error: | |
90e759d1 | 5009 | return ret; |
b481de9c ZY |
5010 | } |
5011 | ||
5012 | ||
5013 | /** | |
bb8c093b | 5014 | * iwl4965_set_ucode_ptrs - Set uCode address location |
b481de9c ZY |
5015 | * |
5016 | * Tell initialization uCode where to find runtime uCode. | |
5017 | * | |
5018 | * BSM registers initially contain pointers to initialization uCode. | |
5019 | * We need to replace them to load runtime uCode inst and data, | |
5020 | * and to save runtime data when powering down. | |
5021 | */ | |
c79dd5b5 | 5022 | static int iwl4965_set_ucode_ptrs(struct iwl_priv *priv) |
b481de9c ZY |
5023 | { |
5024 | dma_addr_t pinst; | |
5025 | dma_addr_t pdata; | |
5026 | int rc = 0; | |
5027 | unsigned long flags; | |
5028 | ||
5029 | /* bits 35:4 for 4965 */ | |
5030 | pinst = priv->ucode_code.p_addr >> 4; | |
5031 | pdata = priv->ucode_data_backup.p_addr >> 4; | |
5032 | ||
5033 | spin_lock_irqsave(&priv->lock, flags); | |
3395f6e9 | 5034 | rc = iwl_grab_nic_access(priv); |
b481de9c ZY |
5035 | if (rc) { |
5036 | spin_unlock_irqrestore(&priv->lock, flags); | |
5037 | return rc; | |
5038 | } | |
5039 | ||
5040 | /* Tell bootstrap uCode where to find image to load */ | |
3395f6e9 TW |
5041 | iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst); |
5042 | iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata); | |
5043 | iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, | |
b481de9c ZY |
5044 | priv->ucode_data.len); |
5045 | ||
5046 | /* Inst bytecount must be last to set up, bit 31 signals uCode | |
5047 | * that all new ptr/size info is in place */ | |
3395f6e9 | 5048 | iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, |
b481de9c ZY |
5049 | priv->ucode_code.len | BSM_DRAM_INST_LOAD); |
5050 | ||
3395f6e9 | 5051 | iwl_release_nic_access(priv); |
b481de9c ZY |
5052 | |
5053 | spin_unlock_irqrestore(&priv->lock, flags); | |
5054 | ||
5055 | IWL_DEBUG_INFO("Runtime uCode pointers are set.\n"); | |
5056 | ||
5057 | return rc; | |
5058 | } | |
5059 | ||
5060 | /** | |
bb8c093b | 5061 | * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received |
b481de9c ZY |
5062 | * |
5063 | * Called after REPLY_ALIVE notification received from "initialize" uCode. | |
5064 | * | |
5065 | * The 4965 "initialize" ALIVE reply contains calibration data for: | |
5066 | * Voltage, temperature, and MIMO tx gain correction, now stored in priv | |
5067 | * (3945 does not contain this data). | |
5068 | * | |
5069 | * Tell "initialize" uCode to go ahead and load the runtime uCode. | |
5070 | */ | |
c79dd5b5 | 5071 | static void iwl4965_init_alive_start(struct iwl_priv *priv) |
b481de9c ZY |
5072 | { |
5073 | /* Check alive response for "valid" sign from uCode */ | |
5074 | if (priv->card_alive_init.is_valid != UCODE_VALID_OK) { | |
5075 | /* We had an error bringing up the hardware, so take it | |
5076 | * all the way back down so we can try again */ | |
5077 | IWL_DEBUG_INFO("Initialize Alive failed.\n"); | |
5078 | goto restart; | |
5079 | } | |
5080 | ||
5081 | /* Bootstrap uCode has loaded initialize uCode ... verify inst image. | |
5082 | * This is a paranoid check, because we would not have gotten the | |
5083 | * "initialize" alive if code weren't properly loaded. */ | |
bb8c093b | 5084 | if (iwl4965_verify_ucode(priv)) { |
b481de9c ZY |
5085 | /* Runtime instruction load was bad; |
5086 | * take it all the way back down so we can try again */ | |
5087 | IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n"); | |
5088 | goto restart; | |
5089 | } | |
5090 | ||
5091 | /* Calculate temperature */ | |
5092 | priv->temperature = iwl4965_get_temperature(priv); | |
5093 | ||
5094 | /* Send pointers to protocol/runtime uCode image ... init code will | |
5095 | * load and launch runtime uCode, which will send us another "Alive" | |
5096 | * notification. */ | |
5097 | IWL_DEBUG_INFO("Initialization Alive received.\n"); | |
bb8c093b | 5098 | if (iwl4965_set_ucode_ptrs(priv)) { |
b481de9c ZY |
5099 | /* Runtime instruction load won't happen; |
5100 | * take it all the way back down so we can try again */ | |
5101 | IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n"); | |
5102 | goto restart; | |
5103 | } | |
5104 | return; | |
5105 | ||
5106 | restart: | |
5107 | queue_work(priv->workqueue, &priv->restart); | |
5108 | } | |
5109 | ||
5110 | ||
5111 | /** | |
bb8c093b | 5112 | * iwl4965_alive_start - called after REPLY_ALIVE notification received |
b481de9c | 5113 | * from protocol/runtime uCode (initialization uCode's |
bb8c093b | 5114 | * Alive gets handled by iwl4965_init_alive_start()). |
b481de9c | 5115 | */ |
c79dd5b5 | 5116 | static void iwl4965_alive_start(struct iwl_priv *priv) |
b481de9c | 5117 | { |
57aab75a | 5118 | int ret = 0; |
b481de9c ZY |
5119 | |
5120 | IWL_DEBUG_INFO("Runtime Alive received.\n"); | |
5121 | ||
5122 | if (priv->card_alive.is_valid != UCODE_VALID_OK) { | |
5123 | /* We had an error bringing up the hardware, so take it | |
5124 | * all the way back down so we can try again */ | |
5125 | IWL_DEBUG_INFO("Alive failed.\n"); | |
5126 | goto restart; | |
5127 | } | |
5128 | ||
5129 | /* Initialize uCode has loaded Runtime uCode ... verify inst image. | |
5130 | * This is a paranoid check, because we would not have gotten the | |
5131 | * "runtime" alive if code weren't properly loaded. */ | |
bb8c093b | 5132 | if (iwl4965_verify_ucode(priv)) { |
b481de9c ZY |
5133 | /* Runtime instruction load was bad; |
5134 | * take it all the way back down so we can try again */ | |
5135 | IWL_DEBUG_INFO("Bad runtime uCode load.\n"); | |
5136 | goto restart; | |
5137 | } | |
5138 | ||
bf85ea4f | 5139 | iwlcore_clear_stations_table(priv); |
b481de9c | 5140 | |
57aab75a TW |
5141 | ret = priv->cfg->ops->lib->alive_notify(priv); |
5142 | if (ret) { | |
b481de9c | 5143 | IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n", |
57aab75a | 5144 | ret); |
b481de9c ZY |
5145 | goto restart; |
5146 | } | |
5147 | ||
9fbab516 | 5148 | /* After the ALIVE response, we can send host commands to 4965 uCode */ |
b481de9c ZY |
5149 | set_bit(STATUS_ALIVE, &priv->status); |
5150 | ||
5151 | /* Clear out the uCode error bit if it is set */ | |
5152 | clear_bit(STATUS_FW_ERROR, &priv->status); | |
5153 | ||
fee1247a | 5154 | if (iwl_is_rfkill(priv)) |
b481de9c ZY |
5155 | return; |
5156 | ||
5a66926a | 5157 | ieee80211_start_queues(priv->hw); |
b481de9c ZY |
5158 | |
5159 | priv->active_rate = priv->rates_mask; | |
5160 | priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK; | |
5161 | ||
3109ece1 | 5162 | if (iwl_is_associated(priv)) { |
bb8c093b CH |
5163 | struct iwl4965_rxon_cmd *active_rxon = |
5164 | (struct iwl4965_rxon_cmd *)(&priv->active_rxon); | |
b481de9c ZY |
5165 | |
5166 | memcpy(&priv->staging_rxon, &priv->active_rxon, | |
5167 | sizeof(priv->staging_rxon)); | |
5168 | active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK; | |
5169 | } else { | |
5170 | /* Initialize our rx_config data */ | |
bb8c093b | 5171 | iwl4965_connection_init_rx_config(priv); |
b481de9c ZY |
5172 | memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN); |
5173 | } | |
5174 | ||
9fbab516 | 5175 | /* Configure Bluetooth device coexistence support */ |
bb8c093b | 5176 | iwl4965_send_bt_config(priv); |
b481de9c ZY |
5177 | |
5178 | /* Configure the adapter for unassociated operation */ | |
bb8c093b | 5179 | iwl4965_commit_rxon(priv); |
b481de9c ZY |
5180 | |
5181 | /* At this point, the NIC is initialized and operational */ | |
5182 | priv->notif_missed_beacons = 0; | |
b481de9c ZY |
5183 | |
5184 | iwl4965_rf_kill_ct_config(priv); | |
5a66926a | 5185 | |
fe00b5a5 RC |
5186 | iwl_leds_register(priv); |
5187 | ||
b481de9c | 5188 | IWL_DEBUG_INFO("ALIVE processing complete.\n"); |
a9f46786 | 5189 | set_bit(STATUS_READY, &priv->status); |
5a66926a | 5190 | wake_up_interruptible(&priv->wait_command_queue); |
b481de9c ZY |
5191 | |
5192 | if (priv->error_recovering) | |
bb8c093b | 5193 | iwl4965_error_recovery(priv); |
b481de9c | 5194 | |
c8381fdc | 5195 | iwlcore_low_level_notify(priv, IWLCORE_START_EVT); |
84363e6e | 5196 | ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC); |
b481de9c ZY |
5197 | return; |
5198 | ||
5199 | restart: | |
5200 | queue_work(priv->workqueue, &priv->restart); | |
5201 | } | |
5202 | ||
c79dd5b5 | 5203 | static void iwl4965_cancel_deferred_work(struct iwl_priv *priv); |
b481de9c | 5204 | |
c79dd5b5 | 5205 | static void __iwl4965_down(struct iwl_priv *priv) |
b481de9c ZY |
5206 | { |
5207 | unsigned long flags; | |
5208 | int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status); | |
5209 | struct ieee80211_conf *conf = NULL; | |
5210 | ||
5211 | IWL_DEBUG_INFO(DRV_NAME " is going down\n"); | |
5212 | ||
5213 | conf = ieee80211_get_hw_conf(priv->hw); | |
5214 | ||
5215 | if (!exit_pending) | |
5216 | set_bit(STATUS_EXIT_PENDING, &priv->status); | |
5217 | ||
ab53d8af MA |
5218 | iwl_leds_unregister(priv); |
5219 | ||
c8381fdc MA |
5220 | iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT); |
5221 | ||
bf85ea4f | 5222 | iwlcore_clear_stations_table(priv); |
b481de9c ZY |
5223 | |
5224 | /* Unblock any waiting calls */ | |
5225 | wake_up_interruptible_all(&priv->wait_command_queue); | |
5226 | ||
b481de9c ZY |
5227 | /* Wipe out the EXIT_PENDING status bit if we are not actually |
5228 | * exiting the module */ | |
5229 | if (!exit_pending) | |
5230 | clear_bit(STATUS_EXIT_PENDING, &priv->status); | |
5231 | ||
5232 | /* stop and reset the on-board processor */ | |
3395f6e9 | 5233 | iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET); |
b481de9c ZY |
5234 | |
5235 | /* tell the device to stop sending interrupts */ | |
0359facc | 5236 | spin_lock_irqsave(&priv->lock, flags); |
bb8c093b | 5237 | iwl4965_disable_interrupts(priv); |
0359facc MA |
5238 | spin_unlock_irqrestore(&priv->lock, flags); |
5239 | iwl_synchronize_irq(priv); | |
b481de9c ZY |
5240 | |
5241 | if (priv->mac80211_registered) | |
5242 | ieee80211_stop_queues(priv->hw); | |
5243 | ||
bb8c093b | 5244 | /* If we have not previously called iwl4965_init() then |
b481de9c | 5245 | * clear all bits but the RF Kill and SUSPEND bits and return */ |
fee1247a | 5246 | if (!iwl_is_init(priv)) { |
b481de9c ZY |
5247 | priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) << |
5248 | STATUS_RF_KILL_HW | | |
5249 | test_bit(STATUS_RF_KILL_SW, &priv->status) << | |
5250 | STATUS_RF_KILL_SW | | |
9788864e RC |
5251 | test_bit(STATUS_GEO_CONFIGURED, &priv->status) << |
5252 | STATUS_GEO_CONFIGURED | | |
b481de9c ZY |
5253 | test_bit(STATUS_IN_SUSPEND, &priv->status) << |
5254 | STATUS_IN_SUSPEND; | |
5255 | goto exit; | |
5256 | } | |
5257 | ||
5258 | /* ...otherwise clear out all the status bits but the RF Kill and | |
5259 | * SUSPEND bits and continue taking the NIC down. */ | |
5260 | priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) << | |
5261 | STATUS_RF_KILL_HW | | |
5262 | test_bit(STATUS_RF_KILL_SW, &priv->status) << | |
5263 | STATUS_RF_KILL_SW | | |
9788864e RC |
5264 | test_bit(STATUS_GEO_CONFIGURED, &priv->status) << |
5265 | STATUS_GEO_CONFIGURED | | |
b481de9c ZY |
5266 | test_bit(STATUS_IN_SUSPEND, &priv->status) << |
5267 | STATUS_IN_SUSPEND | | |
5268 | test_bit(STATUS_FW_ERROR, &priv->status) << | |
5269 | STATUS_FW_ERROR; | |
5270 | ||
5271 | spin_lock_irqsave(&priv->lock, flags); | |
3395f6e9 | 5272 | iwl_clear_bit(priv, CSR_GP_CNTRL, |
9fbab516 | 5273 | CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); |
b481de9c ZY |
5274 | spin_unlock_irqrestore(&priv->lock, flags); |
5275 | ||
bb8c093b CH |
5276 | iwl4965_hw_txq_ctx_stop(priv); |
5277 | iwl4965_hw_rxq_stop(priv); | |
b481de9c ZY |
5278 | |
5279 | spin_lock_irqsave(&priv->lock, flags); | |
3395f6e9 TW |
5280 | if (!iwl_grab_nic_access(priv)) { |
5281 | iwl_write_prph(priv, APMG_CLK_DIS_REG, | |
b481de9c | 5282 | APMG_CLK_VAL_DMA_CLK_RQT); |
3395f6e9 | 5283 | iwl_release_nic_access(priv); |
b481de9c ZY |
5284 | } |
5285 | spin_unlock_irqrestore(&priv->lock, flags); | |
5286 | ||
5287 | udelay(5); | |
5288 | ||
bb8c093b | 5289 | iwl4965_hw_nic_stop_master(priv); |
3395f6e9 | 5290 | iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET); |
bb8c093b | 5291 | iwl4965_hw_nic_reset(priv); |
399f4900 | 5292 | priv->cfg->ops->lib->free_shared_mem(priv); |
b481de9c ZY |
5293 | |
5294 | exit: | |
bb8c093b | 5295 | memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp)); |
b481de9c ZY |
5296 | |
5297 | if (priv->ibss_beacon) | |
5298 | dev_kfree_skb(priv->ibss_beacon); | |
5299 | priv->ibss_beacon = NULL; | |
5300 | ||
5301 | /* clear out any free frames */ | |
bb8c093b | 5302 | iwl4965_clear_free_frames(priv); |
b481de9c ZY |
5303 | } |
5304 | ||
c79dd5b5 | 5305 | static void iwl4965_down(struct iwl_priv *priv) |
b481de9c ZY |
5306 | { |
5307 | mutex_lock(&priv->mutex); | |
bb8c093b | 5308 | __iwl4965_down(priv); |
b481de9c | 5309 | mutex_unlock(&priv->mutex); |
b24d22b1 | 5310 | |
bb8c093b | 5311 | iwl4965_cancel_deferred_work(priv); |
b481de9c ZY |
5312 | } |
5313 | ||
5314 | #define MAX_HW_RESTARTS 5 | |
5315 | ||
c79dd5b5 | 5316 | static int __iwl4965_up(struct iwl_priv *priv) |
b481de9c | 5317 | { |
57aab75a TW |
5318 | int i; |
5319 | int ret; | |
b481de9c ZY |
5320 | |
5321 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) { | |
5322 | IWL_WARNING("Exit pending; will not bring the NIC up\n"); | |
5323 | return -EIO; | |
5324 | } | |
5325 | ||
5326 | if (test_bit(STATUS_RF_KILL_SW, &priv->status)) { | |
5327 | IWL_WARNING("Radio disabled by SW RF kill (module " | |
5328 | "parameter)\n"); | |
ad97edd2 | 5329 | iwl_rfkill_set_hw_state(priv); |
e655b9f0 ZY |
5330 | return -ENODEV; |
5331 | } | |
5332 | ||
e903fbd4 RC |
5333 | if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) { |
5334 | IWL_ERROR("ucode not available for device bringup\n"); | |
5335 | return -EIO; | |
5336 | } | |
5337 | ||
e655b9f0 | 5338 | /* If platform's RF_KILL switch is NOT set to KILL */ |
3395f6e9 | 5339 | if (iwl_read32(priv, CSR_GP_CNTRL) & |
e655b9f0 ZY |
5340 | CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW) |
5341 | clear_bit(STATUS_RF_KILL_HW, &priv->status); | |
5342 | else { | |
5343 | set_bit(STATUS_RF_KILL_HW, &priv->status); | |
5344 | if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) { | |
ad97edd2 | 5345 | iwl_rfkill_set_hw_state(priv); |
e655b9f0 ZY |
5346 | IWL_WARNING("Radio disabled by HW RF Kill switch\n"); |
5347 | return -ENODEV; | |
5348 | } | |
b481de9c ZY |
5349 | } |
5350 | ||
ad97edd2 | 5351 | iwl_rfkill_set_hw_state(priv); |
3395f6e9 | 5352 | iwl_write32(priv, CSR_INT, 0xFFFFFFFF); |
b481de9c | 5353 | |
399f4900 RR |
5354 | ret = priv->cfg->ops->lib->alloc_shared_mem(priv); |
5355 | if (ret) { | |
5356 | IWL_ERROR("Unable to allocate shared memory\n"); | |
5357 | return ret; | |
5358 | } | |
5359 | ||
57aab75a TW |
5360 | ret = priv->cfg->ops->lib->hw_nic_init(priv); |
5361 | if (ret) { | |
5362 | IWL_ERROR("Unable to init nic\n"); | |
5363 | return ret; | |
b481de9c ZY |
5364 | } |
5365 | ||
5366 | /* make sure rfkill handshake bits are cleared */ | |
3395f6e9 TW |
5367 | iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); |
5368 | iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, | |
b481de9c ZY |
5369 | CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); |
5370 | ||
5371 | /* clear (again), then enable host interrupts */ | |
3395f6e9 | 5372 | iwl_write32(priv, CSR_INT, 0xFFFFFFFF); |
bb8c093b | 5373 | iwl4965_enable_interrupts(priv); |
b481de9c ZY |
5374 | |
5375 | /* really make sure rfkill handshake bits are cleared */ | |
3395f6e9 TW |
5376 | iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); |
5377 | iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); | |
b481de9c ZY |
5378 | |
5379 | /* Copy original ucode data image from disk into backup cache. | |
5380 | * This will be used to initialize the on-board processor's | |
5381 | * data SRAM for a clean start when the runtime program first loads. */ | |
5382 | memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr, | |
5a66926a | 5383 | priv->ucode_data.len); |
b481de9c | 5384 | |
e655b9f0 ZY |
5385 | /* We return success when we resume from suspend and rf_kill is on. */ |
5386 | if (test_bit(STATUS_RF_KILL_HW, &priv->status)) | |
b481de9c | 5387 | return 0; |
b481de9c ZY |
5388 | |
5389 | for (i = 0; i < MAX_HW_RESTARTS; i++) { | |
5390 | ||
bf85ea4f | 5391 | iwlcore_clear_stations_table(priv); |
b481de9c ZY |
5392 | |
5393 | /* load bootstrap state machine, | |
5394 | * load bootstrap program into processor's memory, | |
5395 | * prepare to load the "initialize" uCode */ | |
57aab75a | 5396 | ret = priv->cfg->ops->lib->load_ucode(priv); |
b481de9c | 5397 | |
57aab75a TW |
5398 | if (ret) { |
5399 | IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret); | |
b481de9c ZY |
5400 | continue; |
5401 | } | |
5402 | ||
5403 | /* start card; "initialize" will load runtime ucode */ | |
bb8c093b | 5404 | iwl4965_nic_start(priv); |
b481de9c | 5405 | |
b481de9c ZY |
5406 | IWL_DEBUG_INFO(DRV_NAME " is coming up\n"); |
5407 | ||
5408 | return 0; | |
5409 | } | |
5410 | ||
5411 | set_bit(STATUS_EXIT_PENDING, &priv->status); | |
bb8c093b | 5412 | __iwl4965_down(priv); |
b481de9c ZY |
5413 | |
5414 | /* tried to restart and config the device for as long as our | |
5415 | * patience could withstand */ | |
5416 | IWL_ERROR("Unable to initialize device after %d attempts.\n", i); | |
5417 | return -EIO; | |
5418 | } | |
5419 | ||
5420 | ||
5421 | /***************************************************************************** | |
5422 | * | |
5423 | * Workqueue callbacks | |
5424 | * | |
5425 | *****************************************************************************/ | |
5426 | ||
bb8c093b | 5427 | static void iwl4965_bg_init_alive_start(struct work_struct *data) |
b481de9c | 5428 | { |
c79dd5b5 TW |
5429 | struct iwl_priv *priv = |
5430 | container_of(data, struct iwl_priv, init_alive_start.work); | |
b481de9c ZY |
5431 | |
5432 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
5433 | return; | |
5434 | ||
5435 | mutex_lock(&priv->mutex); | |
bb8c093b | 5436 | iwl4965_init_alive_start(priv); |
b481de9c ZY |
5437 | mutex_unlock(&priv->mutex); |
5438 | } | |
5439 | ||
bb8c093b | 5440 | static void iwl4965_bg_alive_start(struct work_struct *data) |
b481de9c | 5441 | { |
c79dd5b5 TW |
5442 | struct iwl_priv *priv = |
5443 | container_of(data, struct iwl_priv, alive_start.work); | |
b481de9c ZY |
5444 | |
5445 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
5446 | return; | |
5447 | ||
5448 | mutex_lock(&priv->mutex); | |
bb8c093b | 5449 | iwl4965_alive_start(priv); |
b481de9c ZY |
5450 | mutex_unlock(&priv->mutex); |
5451 | } | |
5452 | ||
bb8c093b | 5453 | static void iwl4965_bg_rf_kill(struct work_struct *work) |
b481de9c | 5454 | { |
c79dd5b5 | 5455 | struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill); |
b481de9c ZY |
5456 | |
5457 | wake_up_interruptible(&priv->wait_command_queue); | |
5458 | ||
5459 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
5460 | return; | |
5461 | ||
5462 | mutex_lock(&priv->mutex); | |
5463 | ||
fee1247a | 5464 | if (!iwl_is_rfkill(priv)) { |
b481de9c ZY |
5465 | IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL, |
5466 | "HW and/or SW RF Kill no longer active, restarting " | |
5467 | "device\n"); | |
5468 | if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
5469 | queue_work(priv->workqueue, &priv->restart); | |
5470 | } else { | |
ad97edd2 MA |
5471 | /* make sure mac80211 stop sending Tx frame */ |
5472 | if (priv->mac80211_registered) | |
5473 | ieee80211_stop_queues(priv->hw); | |
b481de9c ZY |
5474 | |
5475 | if (!test_bit(STATUS_RF_KILL_HW, &priv->status)) | |
5476 | IWL_DEBUG_RF_KILL("Can not turn radio back on - " | |
5477 | "disabled by SW switch\n"); | |
5478 | else | |
5479 | IWL_WARNING("Radio Frequency Kill Switch is On:\n" | |
5480 | "Kill switch must be turned off for " | |
5481 | "wireless networking to work.\n"); | |
5482 | } | |
ad97edd2 MA |
5483 | iwl_rfkill_set_hw_state(priv); |
5484 | ||
b481de9c ZY |
5485 | mutex_unlock(&priv->mutex); |
5486 | } | |
5487 | ||
5488 | #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ) | |
5489 | ||
bb8c093b | 5490 | static void iwl4965_bg_scan_check(struct work_struct *data) |
b481de9c | 5491 | { |
c79dd5b5 TW |
5492 | struct iwl_priv *priv = |
5493 | container_of(data, struct iwl_priv, scan_check.work); | |
b481de9c ZY |
5494 | |
5495 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
5496 | return; | |
5497 | ||
5498 | mutex_lock(&priv->mutex); | |
5499 | if (test_bit(STATUS_SCANNING, &priv->status) || | |
5500 | test_bit(STATUS_SCAN_ABORTING, &priv->status)) { | |
5501 | IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, | |
5502 | "Scan completion watchdog resetting adapter (%dms)\n", | |
5503 | jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG)); | |
052c4b9f | 5504 | |
b481de9c | 5505 | if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) |
bb8c093b | 5506 | iwl4965_send_scan_abort(priv); |
b481de9c ZY |
5507 | } |
5508 | mutex_unlock(&priv->mutex); | |
5509 | } | |
5510 | ||
bb8c093b | 5511 | static void iwl4965_bg_request_scan(struct work_struct *data) |
b481de9c | 5512 | { |
c79dd5b5 TW |
5513 | struct iwl_priv *priv = |
5514 | container_of(data, struct iwl_priv, request_scan); | |
857485c0 | 5515 | struct iwl_host_cmd cmd = { |
b481de9c | 5516 | .id = REPLY_SCAN_CMD, |
bb8c093b | 5517 | .len = sizeof(struct iwl4965_scan_cmd), |
b481de9c ZY |
5518 | .meta.flags = CMD_SIZE_HUGE, |
5519 | }; | |
bb8c093b | 5520 | struct iwl4965_scan_cmd *scan; |
b481de9c | 5521 | struct ieee80211_conf *conf = NULL; |
78330fdd | 5522 | u16 cmd_len; |
8318d78a | 5523 | enum ieee80211_band band; |
78330fdd | 5524 | u8 direct_mask; |
857485c0 | 5525 | int ret = 0; |
b481de9c ZY |
5526 | |
5527 | conf = ieee80211_get_hw_conf(priv->hw); | |
5528 | ||
5529 | mutex_lock(&priv->mutex); | |
5530 | ||
fee1247a | 5531 | if (!iwl_is_ready(priv)) { |
b481de9c ZY |
5532 | IWL_WARNING("request scan called when driver not ready.\n"); |
5533 | goto done; | |
5534 | } | |
5535 | ||
5536 | /* Make sure the scan wasn't cancelled before this queued work | |
5537 | * was given the chance to run... */ | |
5538 | if (!test_bit(STATUS_SCANNING, &priv->status)) | |
5539 | goto done; | |
5540 | ||
5541 | /* This should never be called or scheduled if there is currently | |
5542 | * a scan active in the hardware. */ | |
5543 | if (test_bit(STATUS_SCAN_HW, &priv->status)) { | |
5544 | IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. " | |
5545 | "Ignoring second request.\n"); | |
857485c0 | 5546 | ret = -EIO; |
b481de9c ZY |
5547 | goto done; |
5548 | } | |
5549 | ||
5550 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) { | |
5551 | IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n"); | |
5552 | goto done; | |
5553 | } | |
5554 | ||
5555 | if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) { | |
5556 | IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n"); | |
5557 | goto done; | |
5558 | } | |
5559 | ||
fee1247a | 5560 | if (iwl_is_rfkill(priv)) { |
b481de9c ZY |
5561 | IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n"); |
5562 | goto done; | |
5563 | } | |
5564 | ||
5565 | if (!test_bit(STATUS_READY, &priv->status)) { | |
5566 | IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n"); | |
5567 | goto done; | |
5568 | } | |
5569 | ||
5570 | if (!priv->scan_bands) { | |
5571 | IWL_DEBUG_HC("Aborting scan due to no requested bands\n"); | |
5572 | goto done; | |
5573 | } | |
5574 | ||
5575 | if (!priv->scan) { | |
bb8c093b | 5576 | priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) + |
b481de9c ZY |
5577 | IWL_MAX_SCAN_SIZE, GFP_KERNEL); |
5578 | if (!priv->scan) { | |
857485c0 | 5579 | ret = -ENOMEM; |
b481de9c ZY |
5580 | goto done; |
5581 | } | |
5582 | } | |
5583 | scan = priv->scan; | |
bb8c093b | 5584 | memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE); |
b481de9c ZY |
5585 | |
5586 | scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH; | |
5587 | scan->quiet_time = IWL_ACTIVE_QUIET_TIME; | |
5588 | ||
3109ece1 | 5589 | if (iwl_is_associated(priv)) { |
b481de9c ZY |
5590 | u16 interval = 0; |
5591 | u32 extra; | |
5592 | u32 suspend_time = 100; | |
5593 | u32 scan_suspend_time = 100; | |
5594 | unsigned long flags; | |
5595 | ||
5596 | IWL_DEBUG_INFO("Scanning while associated...\n"); | |
5597 | ||
5598 | spin_lock_irqsave(&priv->lock, flags); | |
5599 | interval = priv->beacon_int; | |
5600 | spin_unlock_irqrestore(&priv->lock, flags); | |
5601 | ||
5602 | scan->suspend_time = 0; | |
052c4b9f | 5603 | scan->max_out_time = cpu_to_le32(200 * 1024); |
b481de9c ZY |
5604 | if (!interval) |
5605 | interval = suspend_time; | |
5606 | ||
5607 | extra = (suspend_time / interval) << 22; | |
5608 | scan_suspend_time = (extra | | |
5609 | ((suspend_time % interval) * 1024)); | |
5610 | scan->suspend_time = cpu_to_le32(scan_suspend_time); | |
5611 | IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n", | |
5612 | scan_suspend_time, interval); | |
5613 | } | |
5614 | ||
5615 | /* We should add the ability for user to lock to PASSIVE ONLY */ | |
5616 | if (priv->one_direct_scan) { | |
5617 | IWL_DEBUG_SCAN | |
5618 | ("Kicking off one direct scan for '%s'\n", | |
bb8c093b | 5619 | iwl4965_escape_essid(priv->direct_ssid, |
b481de9c ZY |
5620 | priv->direct_ssid_len)); |
5621 | scan->direct_scan[0].id = WLAN_EID_SSID; | |
5622 | scan->direct_scan[0].len = priv->direct_ssid_len; | |
5623 | memcpy(scan->direct_scan[0].ssid, | |
5624 | priv->direct_ssid, priv->direct_ssid_len); | |
5625 | direct_mask = 1; | |
3109ece1 | 5626 | } else if (!iwl_is_associated(priv) && priv->essid_len) { |
786b4557 BM |
5627 | IWL_DEBUG_SCAN |
5628 | ("Kicking off one direct scan for '%s' when not associated\n", | |
5629 | iwl4965_escape_essid(priv->essid, priv->essid_len)); | |
b481de9c ZY |
5630 | scan->direct_scan[0].id = WLAN_EID_SSID; |
5631 | scan->direct_scan[0].len = priv->essid_len; | |
5632 | memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len); | |
5633 | direct_mask = 1; | |
857485c0 | 5634 | } else { |
786b4557 | 5635 | IWL_DEBUG_SCAN("Kicking off one indirect scan.\n"); |
b481de9c | 5636 | direct_mask = 0; |
857485c0 | 5637 | } |
b481de9c | 5638 | |
b481de9c | 5639 | scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK; |
5425e490 | 5640 | scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id; |
b481de9c ZY |
5641 | scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; |
5642 | ||
b481de9c ZY |
5643 | |
5644 | switch (priv->scan_bands) { | |
5645 | case 2: | |
5646 | scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK; | |
5647 | scan->tx_cmd.rate_n_flags = | |
bb8c093b | 5648 | iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP, |
b481de9c ZY |
5649 | RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK); |
5650 | ||
5651 | scan->good_CRC_th = 0; | |
8318d78a | 5652 | band = IEEE80211_BAND_2GHZ; |
b481de9c ZY |
5653 | break; |
5654 | ||
5655 | case 1: | |
5656 | scan->tx_cmd.rate_n_flags = | |
bb8c093b | 5657 | iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP, |
b481de9c ZY |
5658 | RATE_MCS_ANT_B_MSK); |
5659 | scan->good_CRC_th = IWL_GOOD_CRC_TH; | |
8318d78a | 5660 | band = IEEE80211_BAND_5GHZ; |
b481de9c ZY |
5661 | break; |
5662 | ||
5663 | default: | |
5664 | IWL_WARNING("Invalid scan band count\n"); | |
5665 | goto done; | |
5666 | } | |
5667 | ||
78330fdd TW |
5668 | /* We don't build a direct scan probe request; the uCode will do |
5669 | * that based on the direct_mask added to each channel entry */ | |
5670 | cmd_len = iwl4965_fill_probe_req(priv, band, | |
5671 | (struct ieee80211_mgmt *)scan->data, | |
5672 | IWL_MAX_SCAN_SIZE - sizeof(*scan), 0); | |
5673 | ||
5674 | scan->tx_cmd.len = cpu_to_le16(cmd_len); | |
b481de9c ZY |
5675 | /* select Rx chains */ |
5676 | ||
5677 | /* Force use of chains B and C (0x6) for scan Rx. | |
5678 | * Avoid A (0x1) because of its off-channel reception on A-band. | |
5679 | * MIMO is not used here, but value is required to make uCode happy. */ | |
5680 | scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK | | |
5681 | cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) | | |
5682 | (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) | | |
5683 | (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS)); | |
5684 | ||
5685 | if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) | |
5686 | scan->filter_flags = RXON_FILTER_PROMISC_MSK; | |
5687 | ||
786b4557 | 5688 | if (direct_mask) |
26c0f03f RC |
5689 | scan->channel_count = |
5690 | iwl4965_get_channels_for_scan( | |
5691 | priv, band, 1, /* active */ | |
5692 | direct_mask, | |
5693 | (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]); | |
786b4557 | 5694 | else |
26c0f03f RC |
5695 | scan->channel_count = |
5696 | iwl4965_get_channels_for_scan( | |
5697 | priv, band, 0, /* passive */ | |
5698 | direct_mask, | |
5699 | (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]); | |
b481de9c | 5700 | |
5da4b55f MA |
5701 | scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK | |
5702 | RXON_FILTER_BCON_AWARE_MSK); | |
b481de9c | 5703 | cmd.len += le16_to_cpu(scan->tx_cmd.len) + |
bb8c093b | 5704 | scan->channel_count * sizeof(struct iwl4965_scan_channel); |
b481de9c ZY |
5705 | cmd.data = scan; |
5706 | scan->len = cpu_to_le16(cmd.len); | |
5707 | ||
5708 | set_bit(STATUS_SCAN_HW, &priv->status); | |
857485c0 TW |
5709 | ret = iwl_send_cmd_sync(priv, &cmd); |
5710 | if (ret) | |
b481de9c ZY |
5711 | goto done; |
5712 | ||
5713 | queue_delayed_work(priv->workqueue, &priv->scan_check, | |
5714 | IWL_SCAN_CHECK_WATCHDOG); | |
5715 | ||
5716 | mutex_unlock(&priv->mutex); | |
5717 | return; | |
5718 | ||
5719 | done: | |
01ebd063 | 5720 | /* inform mac80211 scan aborted */ |
b481de9c ZY |
5721 | queue_work(priv->workqueue, &priv->scan_completed); |
5722 | mutex_unlock(&priv->mutex); | |
5723 | } | |
5724 | ||
bb8c093b | 5725 | static void iwl4965_bg_up(struct work_struct *data) |
b481de9c | 5726 | { |
c79dd5b5 | 5727 | struct iwl_priv *priv = container_of(data, struct iwl_priv, up); |
b481de9c ZY |
5728 | |
5729 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
5730 | return; | |
5731 | ||
5732 | mutex_lock(&priv->mutex); | |
bb8c093b | 5733 | __iwl4965_up(priv); |
b481de9c ZY |
5734 | mutex_unlock(&priv->mutex); |
5735 | } | |
5736 | ||
bb8c093b | 5737 | static void iwl4965_bg_restart(struct work_struct *data) |
b481de9c | 5738 | { |
c79dd5b5 | 5739 | struct iwl_priv *priv = container_of(data, struct iwl_priv, restart); |
b481de9c ZY |
5740 | |
5741 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
5742 | return; | |
5743 | ||
bb8c093b | 5744 | iwl4965_down(priv); |
b481de9c ZY |
5745 | queue_work(priv->workqueue, &priv->up); |
5746 | } | |
5747 | ||
bb8c093b | 5748 | static void iwl4965_bg_rx_replenish(struct work_struct *data) |
b481de9c | 5749 | { |
c79dd5b5 TW |
5750 | struct iwl_priv *priv = |
5751 | container_of(data, struct iwl_priv, rx_replenish); | |
b481de9c ZY |
5752 | |
5753 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
5754 | return; | |
5755 | ||
5756 | mutex_lock(&priv->mutex); | |
bb8c093b | 5757 | iwl4965_rx_replenish(priv); |
b481de9c ZY |
5758 | mutex_unlock(&priv->mutex); |
5759 | } | |
5760 | ||
7878a5a4 MA |
5761 | #define IWL_DELAY_NEXT_SCAN (HZ*2) |
5762 | ||
508e32e1 | 5763 | static void iwl4965_post_associate(struct iwl_priv *priv) |
b481de9c | 5764 | { |
b481de9c | 5765 | struct ieee80211_conf *conf = NULL; |
857485c0 | 5766 | int ret = 0; |
0795af57 | 5767 | DECLARE_MAC_BUF(mac); |
b481de9c ZY |
5768 | |
5769 | if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { | |
5770 | IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__); | |
5771 | return; | |
5772 | } | |
5773 | ||
0795af57 JP |
5774 | IWL_DEBUG_ASSOC("Associated as %d to: %s\n", |
5775 | priv->assoc_id, | |
5776 | print_mac(mac, priv->active_rxon.bssid_addr)); | |
b481de9c ZY |
5777 | |
5778 | ||
5779 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
5780 | return; | |
5781 | ||
b481de9c | 5782 | |
508e32e1 | 5783 | if (!priv->vif || !priv->is_open) |
948c171c | 5784 | return; |
508e32e1 | 5785 | |
bb8c093b | 5786 | iwl4965_scan_cancel_timeout(priv, 200); |
052c4b9f | 5787 | |
b481de9c ZY |
5788 | conf = ieee80211_get_hw_conf(priv->hw); |
5789 | ||
5790 | priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; | |
bb8c093b | 5791 | iwl4965_commit_rxon(priv); |
b481de9c | 5792 | |
bb8c093b CH |
5793 | memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd)); |
5794 | iwl4965_setup_rxon_timing(priv); | |
857485c0 | 5795 | ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING, |
b481de9c | 5796 | sizeof(priv->rxon_timing), &priv->rxon_timing); |
857485c0 | 5797 | if (ret) |
b481de9c ZY |
5798 | IWL_WARNING("REPLY_RXON_TIMING failed - " |
5799 | "Attempting to continue.\n"); | |
5800 | ||
5801 | priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK; | |
5802 | ||
c8b0e6e1 | 5803 | #ifdef CONFIG_IWL4965_HT |
fd105e79 RR |
5804 | if (priv->current_ht_config.is_ht) |
5805 | iwl4965_set_rxon_ht(priv, &priv->current_ht_config); | |
c8b0e6e1 | 5806 | #endif /* CONFIG_IWL4965_HT*/ |
b481de9c ZY |
5807 | iwl4965_set_rxon_chain(priv); |
5808 | priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id); | |
5809 | ||
5810 | IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n", | |
5811 | priv->assoc_id, priv->beacon_int); | |
5812 | ||
5813 | if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE) | |
5814 | priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; | |
5815 | else | |
5816 | priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; | |
5817 | ||
5818 | if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) { | |
5819 | if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) | |
5820 | priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK; | |
5821 | else | |
5822 | priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK; | |
5823 | ||
5824 | if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) | |
5825 | priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK; | |
5826 | ||
5827 | } | |
5828 | ||
bb8c093b | 5829 | iwl4965_commit_rxon(priv); |
b481de9c ZY |
5830 | |
5831 | switch (priv->iw_mode) { | |
5832 | case IEEE80211_IF_TYPE_STA: | |
bb8c093b | 5833 | iwl4965_rate_scale_init(priv->hw, IWL_AP_ID); |
b481de9c ZY |
5834 | break; |
5835 | ||
5836 | case IEEE80211_IF_TYPE_IBSS: | |
5837 | ||
5838 | /* clear out the station table */ | |
bf85ea4f | 5839 | iwlcore_clear_stations_table(priv); |
b481de9c | 5840 | |
bb8c093b CH |
5841 | iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0); |
5842 | iwl4965_rxon_add_station(priv, priv->bssid, 0); | |
5843 | iwl4965_rate_scale_init(priv->hw, IWL_STA_ID); | |
5844 | iwl4965_send_beacon_cmd(priv); | |
b481de9c ZY |
5845 | |
5846 | break; | |
5847 | ||
5848 | default: | |
5849 | IWL_ERROR("%s Should not be called in %d mode\n", | |
5850 | __FUNCTION__, priv->iw_mode); | |
5851 | break; | |
5852 | } | |
5853 | ||
bb8c093b | 5854 | iwl4965_sequence_reset(priv); |
b481de9c | 5855 | |
b481de9c | 5856 | /* Enable Rx differential gain and sensitivity calibrations */ |
f0832f13 | 5857 | iwl_chain_noise_reset(priv); |
b481de9c | 5858 | priv->start_calib = 1; |
b481de9c ZY |
5859 | |
5860 | if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) | |
5861 | priv->assoc_station_added = 1; | |
5862 | ||
bb8c093b | 5863 | iwl4965_activate_qos(priv, 0); |
292ae174 | 5864 | |
5da4b55f | 5865 | iwl_power_update_mode(priv, 0); |
7878a5a4 MA |
5866 | /* we have just associated, don't start scan too early */ |
5867 | priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN; | |
508e32e1 RC |
5868 | } |
5869 | ||
5870 | ||
5871 | static void iwl4965_bg_post_associate(struct work_struct *data) | |
5872 | { | |
5873 | struct iwl_priv *priv = container_of(data, struct iwl_priv, | |
5874 | post_associate.work); | |
5875 | ||
5876 | mutex_lock(&priv->mutex); | |
5877 | iwl4965_post_associate(priv); | |
b481de9c | 5878 | mutex_unlock(&priv->mutex); |
508e32e1 | 5879 | |
b481de9c ZY |
5880 | } |
5881 | ||
bb8c093b | 5882 | static void iwl4965_bg_abort_scan(struct work_struct *work) |
b481de9c | 5883 | { |
c79dd5b5 | 5884 | struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan); |
b481de9c | 5885 | |
fee1247a | 5886 | if (!iwl_is_ready(priv)) |
b481de9c ZY |
5887 | return; |
5888 | ||
5889 | mutex_lock(&priv->mutex); | |
5890 | ||
5891 | set_bit(STATUS_SCAN_ABORTING, &priv->status); | |
bb8c093b | 5892 | iwl4965_send_scan_abort(priv); |
b481de9c ZY |
5893 | |
5894 | mutex_unlock(&priv->mutex); | |
5895 | } | |
5896 | ||
76bb77e0 ZY |
5897 | static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf); |
5898 | ||
bb8c093b | 5899 | static void iwl4965_bg_scan_completed(struct work_struct *work) |
b481de9c | 5900 | { |
c79dd5b5 TW |
5901 | struct iwl_priv *priv = |
5902 | container_of(work, struct iwl_priv, scan_completed); | |
b481de9c ZY |
5903 | |
5904 | IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n"); | |
5905 | ||
5906 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
5907 | return; | |
5908 | ||
a0646470 ZY |
5909 | if (test_bit(STATUS_CONF_PENDING, &priv->status)) |
5910 | iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw)); | |
76bb77e0 | 5911 | |
b481de9c ZY |
5912 | ieee80211_scan_completed(priv->hw); |
5913 | ||
5914 | /* Since setting the TXPOWER may have been deferred while | |
5915 | * performing the scan, fire one off */ | |
5916 | mutex_lock(&priv->mutex); | |
bb8c093b | 5917 | iwl4965_hw_reg_send_txpower(priv); |
b481de9c ZY |
5918 | mutex_unlock(&priv->mutex); |
5919 | } | |
5920 | ||
5921 | /***************************************************************************** | |
5922 | * | |
5923 | * mac80211 entry point functions | |
5924 | * | |
5925 | *****************************************************************************/ | |
5926 | ||
5a66926a ZY |
5927 | #define UCODE_READY_TIMEOUT (2 * HZ) |
5928 | ||
bb8c093b | 5929 | static int iwl4965_mac_start(struct ieee80211_hw *hw) |
b481de9c | 5930 | { |
c79dd5b5 | 5931 | struct iwl_priv *priv = hw->priv; |
5a66926a | 5932 | int ret; |
b481de9c ZY |
5933 | |
5934 | IWL_DEBUG_MAC80211("enter\n"); | |
5935 | ||
5a66926a ZY |
5936 | if (pci_enable_device(priv->pci_dev)) { |
5937 | IWL_ERROR("Fail to pci_enable_device\n"); | |
5938 | return -ENODEV; | |
5939 | } | |
5940 | pci_restore_state(priv->pci_dev); | |
5941 | pci_enable_msi(priv->pci_dev); | |
5942 | ||
5943 | ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED, | |
5944 | DRV_NAME, priv); | |
5945 | if (ret) { | |
5946 | IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq); | |
5947 | goto out_disable_msi; | |
5948 | } | |
5949 | ||
b481de9c ZY |
5950 | /* we should be verifying the device is ready to be opened */ |
5951 | mutex_lock(&priv->mutex); | |
5952 | ||
5a66926a ZY |
5953 | memset(&priv->staging_rxon, 0, sizeof(struct iwl4965_rxon_cmd)); |
5954 | /* fetch ucode file from disk, alloc and copy to bus-master buffers ... | |
5955 | * ucode filename and max sizes are card-specific. */ | |
b481de9c | 5956 | |
5a66926a ZY |
5957 | if (!priv->ucode_code.len) { |
5958 | ret = iwl4965_read_ucode(priv); | |
5959 | if (ret) { | |
5960 | IWL_ERROR("Could not read microcode: %d\n", ret); | |
5961 | mutex_unlock(&priv->mutex); | |
5962 | goto out_release_irq; | |
5963 | } | |
5964 | } | |
b481de9c | 5965 | |
e655b9f0 | 5966 | ret = __iwl4965_up(priv); |
5a66926a | 5967 | |
b481de9c | 5968 | mutex_unlock(&priv->mutex); |
5a66926a | 5969 | |
e655b9f0 ZY |
5970 | if (ret) |
5971 | goto out_release_irq; | |
5972 | ||
5973 | IWL_DEBUG_INFO("Start UP work done.\n"); | |
5974 | ||
5975 | if (test_bit(STATUS_IN_SUSPEND, &priv->status)) | |
5976 | return 0; | |
5977 | ||
5a66926a ZY |
5978 | /* Wait for START_ALIVE from ucode. Otherwise callbacks from |
5979 | * mac80211 will not be run successfully. */ | |
5980 | ret = wait_event_interruptible_timeout(priv->wait_command_queue, | |
5981 | test_bit(STATUS_READY, &priv->status), | |
5982 | UCODE_READY_TIMEOUT); | |
5983 | if (!ret) { | |
5984 | if (!test_bit(STATUS_READY, &priv->status)) { | |
5985 | IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n", | |
5986 | jiffies_to_msecs(UCODE_READY_TIMEOUT)); | |
5987 | ret = -ETIMEDOUT; | |
5988 | goto out_release_irq; | |
5989 | } | |
5990 | } | |
5991 | ||
e655b9f0 | 5992 | priv->is_open = 1; |
b481de9c ZY |
5993 | IWL_DEBUG_MAC80211("leave\n"); |
5994 | return 0; | |
5a66926a ZY |
5995 | |
5996 | out_release_irq: | |
5997 | free_irq(priv->pci_dev->irq, priv); | |
5998 | out_disable_msi: | |
5999 | pci_disable_msi(priv->pci_dev); | |
e655b9f0 ZY |
6000 | pci_disable_device(priv->pci_dev); |
6001 | priv->is_open = 0; | |
6002 | IWL_DEBUG_MAC80211("leave - failed\n"); | |
5a66926a | 6003 | return ret; |
b481de9c ZY |
6004 | } |
6005 | ||
bb8c093b | 6006 | static void iwl4965_mac_stop(struct ieee80211_hw *hw) |
b481de9c | 6007 | { |
c79dd5b5 | 6008 | struct iwl_priv *priv = hw->priv; |
b481de9c ZY |
6009 | |
6010 | IWL_DEBUG_MAC80211("enter\n"); | |
948c171c | 6011 | |
e655b9f0 ZY |
6012 | if (!priv->is_open) { |
6013 | IWL_DEBUG_MAC80211("leave - skip\n"); | |
6014 | return; | |
6015 | } | |
6016 | ||
b481de9c | 6017 | priv->is_open = 0; |
5a66926a | 6018 | |
fee1247a | 6019 | if (iwl_is_ready_rf(priv)) { |
e655b9f0 ZY |
6020 | /* stop mac, cancel any scan request and clear |
6021 | * RXON_FILTER_ASSOC_MSK BIT | |
6022 | */ | |
5a66926a ZY |
6023 | mutex_lock(&priv->mutex); |
6024 | iwl4965_scan_cancel_timeout(priv, 100); | |
6025 | cancel_delayed_work(&priv->post_associate); | |
fde3571f | 6026 | mutex_unlock(&priv->mutex); |
fde3571f MA |
6027 | } |
6028 | ||
5a66926a ZY |
6029 | iwl4965_down(priv); |
6030 | ||
6031 | flush_workqueue(priv->workqueue); | |
6032 | free_irq(priv->pci_dev->irq, priv); | |
6033 | pci_disable_msi(priv->pci_dev); | |
6034 | pci_save_state(priv->pci_dev); | |
6035 | pci_disable_device(priv->pci_dev); | |
948c171c | 6036 | |
b481de9c | 6037 | IWL_DEBUG_MAC80211("leave\n"); |
b481de9c ZY |
6038 | } |
6039 | ||
bb8c093b | 6040 | static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb, |
b481de9c ZY |
6041 | struct ieee80211_tx_control *ctl) |
6042 | { | |
c79dd5b5 | 6043 | struct iwl_priv *priv = hw->priv; |
b481de9c ZY |
6044 | |
6045 | IWL_DEBUG_MAC80211("enter\n"); | |
6046 | ||
6047 | if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) { | |
6048 | IWL_DEBUG_MAC80211("leave - monitor\n"); | |
6049 | return -1; | |
6050 | } | |
6051 | ||
6052 | IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len, | |
8318d78a | 6053 | ctl->tx_rate->bitrate); |
b481de9c | 6054 | |
bb8c093b | 6055 | if (iwl4965_tx_skb(priv, skb, ctl)) |
b481de9c ZY |
6056 | dev_kfree_skb_any(skb); |
6057 | ||
6058 | IWL_DEBUG_MAC80211("leave\n"); | |
6059 | return 0; | |
6060 | } | |
6061 | ||
bb8c093b | 6062 | static int iwl4965_mac_add_interface(struct ieee80211_hw *hw, |
b481de9c ZY |
6063 | struct ieee80211_if_init_conf *conf) |
6064 | { | |
c79dd5b5 | 6065 | struct iwl_priv *priv = hw->priv; |
b481de9c | 6066 | unsigned long flags; |
0795af57 | 6067 | DECLARE_MAC_BUF(mac); |
b481de9c | 6068 | |
32bfd35d | 6069 | IWL_DEBUG_MAC80211("enter: type %d\n", conf->type); |
b481de9c | 6070 | |
32bfd35d JB |
6071 | if (priv->vif) { |
6072 | IWL_DEBUG_MAC80211("leave - vif != NULL\n"); | |
75849d28 | 6073 | return -EOPNOTSUPP; |
b481de9c ZY |
6074 | } |
6075 | ||
6076 | spin_lock_irqsave(&priv->lock, flags); | |
32bfd35d | 6077 | priv->vif = conf->vif; |
b481de9c ZY |
6078 | |
6079 | spin_unlock_irqrestore(&priv->lock, flags); | |
6080 | ||
6081 | mutex_lock(&priv->mutex); | |
864792e3 TW |
6082 | |
6083 | if (conf->mac_addr) { | |
6084 | IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr)); | |
6085 | memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN); | |
6086 | } | |
b481de9c | 6087 | |
fee1247a | 6088 | if (iwl_is_ready(priv)) |
5a66926a ZY |
6089 | iwl4965_set_mode(priv, conf->type); |
6090 | ||
b481de9c ZY |
6091 | mutex_unlock(&priv->mutex); |
6092 | ||
5a66926a | 6093 | IWL_DEBUG_MAC80211("leave\n"); |
b481de9c ZY |
6094 | return 0; |
6095 | } | |
6096 | ||
6097 | /** | |
bb8c093b | 6098 | * iwl4965_mac_config - mac80211 config callback |
b481de9c ZY |
6099 | * |
6100 | * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to | |
6101 | * be set inappropriately and the driver currently sets the hardware up to | |
6102 | * use it whenever needed. | |
6103 | */ | |
bb8c093b | 6104 | static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf) |
b481de9c | 6105 | { |
c79dd5b5 | 6106 | struct iwl_priv *priv = hw->priv; |
bf85ea4f | 6107 | const struct iwl_channel_info *ch_info; |
b481de9c | 6108 | unsigned long flags; |
76bb77e0 | 6109 | int ret = 0; |
b481de9c ZY |
6110 | |
6111 | mutex_lock(&priv->mutex); | |
8318d78a | 6112 | IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value); |
b481de9c | 6113 | |
12342c47 ZY |
6114 | priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP); |
6115 | ||
fee1247a | 6116 | if (!iwl_is_ready(priv)) { |
b481de9c | 6117 | IWL_DEBUG_MAC80211("leave - not ready\n"); |
76bb77e0 ZY |
6118 | ret = -EIO; |
6119 | goto out; | |
b481de9c ZY |
6120 | } |
6121 | ||
1ea87396 | 6122 | if (unlikely(!priv->cfg->mod_params->disable_hw_scan && |
b481de9c | 6123 | test_bit(STATUS_SCANNING, &priv->status))) { |
a0646470 ZY |
6124 | IWL_DEBUG_MAC80211("leave - scanning\n"); |
6125 | set_bit(STATUS_CONF_PENDING, &priv->status); | |
b481de9c | 6126 | mutex_unlock(&priv->mutex); |
a0646470 | 6127 | return 0; |
b481de9c ZY |
6128 | } |
6129 | ||
6130 | spin_lock_irqsave(&priv->lock, flags); | |
6131 | ||
8622e705 | 6132 | ch_info = iwl_get_channel_info(priv, conf->channel->band, |
8318d78a | 6133 | ieee80211_frequency_to_channel(conf->channel->center_freq)); |
b481de9c | 6134 | if (!is_channel_valid(ch_info)) { |
b481de9c ZY |
6135 | IWL_DEBUG_MAC80211("leave - invalid channel\n"); |
6136 | spin_unlock_irqrestore(&priv->lock, flags); | |
76bb77e0 ZY |
6137 | ret = -EINVAL; |
6138 | goto out; | |
b481de9c ZY |
6139 | } |
6140 | ||
c8b0e6e1 | 6141 | #ifdef CONFIG_IWL4965_HT |
78330fdd | 6142 | /* if we are switching from ht to 2.4 clear flags |
b481de9c ZY |
6143 | * from any ht related info since 2.4 does not |
6144 | * support ht */ | |
78330fdd | 6145 | if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value) |
b481de9c ZY |
6146 | #ifdef IEEE80211_CONF_CHANNEL_SWITCH |
6147 | && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) | |
6148 | #endif | |
6149 | ) | |
6150 | priv->staging_rxon.flags = 0; | |
c8b0e6e1 | 6151 | #endif /* CONFIG_IWL4965_HT */ |
b481de9c | 6152 | |
bf85ea4f | 6153 | iwlcore_set_rxon_channel(priv, conf->channel->band, |
8318d78a | 6154 | ieee80211_frequency_to_channel(conf->channel->center_freq)); |
b481de9c | 6155 | |
8318d78a | 6156 | iwl4965_set_flags_for_phymode(priv, conf->channel->band); |
b481de9c ZY |
6157 | |
6158 | /* The list of supported rates and rate mask can be different | |
8318d78a | 6159 | * for each band; since the band may have changed, reset |
b481de9c | 6160 | * the rate mask to what mac80211 lists */ |
bb8c093b | 6161 | iwl4965_set_rate(priv); |
b481de9c ZY |
6162 | |
6163 | spin_unlock_irqrestore(&priv->lock, flags); | |
6164 | ||
6165 | #ifdef IEEE80211_CONF_CHANNEL_SWITCH | |
6166 | if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) { | |
bb8c093b | 6167 | iwl4965_hw_channel_switch(priv, conf->channel); |
76bb77e0 | 6168 | goto out; |
b481de9c ZY |
6169 | } |
6170 | #endif | |
6171 | ||
ad97edd2 MA |
6172 | if (priv->cfg->ops->lib->radio_kill_sw) |
6173 | priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled); | |
b481de9c ZY |
6174 | |
6175 | if (!conf->radio_enabled) { | |
6176 | IWL_DEBUG_MAC80211("leave - radio disabled\n"); | |
76bb77e0 | 6177 | goto out; |
b481de9c ZY |
6178 | } |
6179 | ||
fee1247a | 6180 | if (iwl_is_rfkill(priv)) { |
b481de9c | 6181 | IWL_DEBUG_MAC80211("leave - RF kill\n"); |
76bb77e0 ZY |
6182 | ret = -EIO; |
6183 | goto out; | |
b481de9c ZY |
6184 | } |
6185 | ||
bb8c093b | 6186 | iwl4965_set_rate(priv); |
b481de9c ZY |
6187 | |
6188 | if (memcmp(&priv->active_rxon, | |
6189 | &priv->staging_rxon, sizeof(priv->staging_rxon))) | |
bb8c093b | 6190 | iwl4965_commit_rxon(priv); |
b481de9c ZY |
6191 | else |
6192 | IWL_DEBUG_INFO("No re-sending same RXON configuration.\n"); | |
6193 | ||
6194 | IWL_DEBUG_MAC80211("leave\n"); | |
6195 | ||
a0646470 ZY |
6196 | out: |
6197 | clear_bit(STATUS_CONF_PENDING, &priv->status); | |
5a66926a | 6198 | mutex_unlock(&priv->mutex); |
76bb77e0 | 6199 | return ret; |
b481de9c ZY |
6200 | } |
6201 | ||
c79dd5b5 | 6202 | static void iwl4965_config_ap(struct iwl_priv *priv) |
b481de9c | 6203 | { |
857485c0 | 6204 | int ret = 0; |
b481de9c | 6205 | |
d986bcd1 | 6206 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
b481de9c ZY |
6207 | return; |
6208 | ||
6209 | /* The following should be done only at AP bring up */ | |
6210 | if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) { | |
6211 | ||
6212 | /* RXON - unassoc (to set timing command) */ | |
6213 | priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; | |
bb8c093b | 6214 | iwl4965_commit_rxon(priv); |
b481de9c ZY |
6215 | |
6216 | /* RXON Timing */ | |
bb8c093b CH |
6217 | memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd)); |
6218 | iwl4965_setup_rxon_timing(priv); | |
857485c0 | 6219 | ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING, |
b481de9c | 6220 | sizeof(priv->rxon_timing), &priv->rxon_timing); |
857485c0 | 6221 | if (ret) |
b481de9c ZY |
6222 | IWL_WARNING("REPLY_RXON_TIMING failed - " |
6223 | "Attempting to continue.\n"); | |
6224 | ||
6225 | iwl4965_set_rxon_chain(priv); | |
6226 | ||
6227 | /* FIXME: what should be the assoc_id for AP? */ | |
6228 | priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id); | |
6229 | if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE) | |
6230 | priv->staging_rxon.flags |= | |
6231 | RXON_FLG_SHORT_PREAMBLE_MSK; | |
6232 | else | |
6233 | priv->staging_rxon.flags &= | |
6234 | ~RXON_FLG_SHORT_PREAMBLE_MSK; | |
6235 | ||
6236 | if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) { | |
6237 | if (priv->assoc_capability & | |
6238 | WLAN_CAPABILITY_SHORT_SLOT_TIME) | |
6239 | priv->staging_rxon.flags |= | |
6240 | RXON_FLG_SHORT_SLOT_MSK; | |
6241 | else | |
6242 | priv->staging_rxon.flags &= | |
6243 | ~RXON_FLG_SHORT_SLOT_MSK; | |
6244 | ||
6245 | if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) | |
6246 | priv->staging_rxon.flags &= | |
6247 | ~RXON_FLG_SHORT_SLOT_MSK; | |
6248 | } | |
6249 | /* restore RXON assoc */ | |
6250 | priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK; | |
bb8c093b | 6251 | iwl4965_commit_rxon(priv); |
bb8c093b | 6252 | iwl4965_activate_qos(priv, 1); |
bb8c093b | 6253 | iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0); |
e1493deb | 6254 | } |
bb8c093b | 6255 | iwl4965_send_beacon_cmd(priv); |
b481de9c ZY |
6256 | |
6257 | /* FIXME - we need to add code here to detect a totally new | |
6258 | * configuration, reset the AP, unassoc, rxon timing, assoc, | |
6259 | * clear sta table, add BCAST sta... */ | |
6260 | } | |
6261 | ||
32bfd35d JB |
6262 | static int iwl4965_mac_config_interface(struct ieee80211_hw *hw, |
6263 | struct ieee80211_vif *vif, | |
b481de9c ZY |
6264 | struct ieee80211_if_conf *conf) |
6265 | { | |
c79dd5b5 | 6266 | struct iwl_priv *priv = hw->priv; |
0795af57 | 6267 | DECLARE_MAC_BUF(mac); |
b481de9c ZY |
6268 | unsigned long flags; |
6269 | int rc; | |
6270 | ||
6271 | if (conf == NULL) | |
6272 | return -EIO; | |
6273 | ||
b716bb91 EG |
6274 | if (priv->vif != vif) { |
6275 | IWL_DEBUG_MAC80211("leave - priv->vif != vif\n"); | |
b716bb91 EG |
6276 | return 0; |
6277 | } | |
6278 | ||
b481de9c ZY |
6279 | if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) && |
6280 | (!conf->beacon || !conf->ssid_len)) { | |
6281 | IWL_DEBUG_MAC80211 | |
6282 | ("Leaving in AP mode because HostAPD is not ready.\n"); | |
6283 | return 0; | |
6284 | } | |
6285 | ||
fee1247a | 6286 | if (!iwl_is_alive(priv)) |
5a66926a ZY |
6287 | return -EAGAIN; |
6288 | ||
b481de9c ZY |
6289 | mutex_lock(&priv->mutex); |
6290 | ||
b481de9c | 6291 | if (conf->bssid) |
0795af57 JP |
6292 | IWL_DEBUG_MAC80211("bssid: %s\n", |
6293 | print_mac(mac, conf->bssid)); | |
b481de9c | 6294 | |
4150c572 JB |
6295 | /* |
6296 | * very dubious code was here; the probe filtering flag is never set: | |
6297 | * | |
b481de9c ZY |
6298 | if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) && |
6299 | !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) { | |
4150c572 | 6300 | */ |
b481de9c ZY |
6301 | |
6302 | if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { | |
6303 | if (!conf->bssid) { | |
6304 | conf->bssid = priv->mac_addr; | |
6305 | memcpy(priv->bssid, priv->mac_addr, ETH_ALEN); | |
0795af57 JP |
6306 | IWL_DEBUG_MAC80211("bssid was set to: %s\n", |
6307 | print_mac(mac, conf->bssid)); | |
b481de9c ZY |
6308 | } |
6309 | if (priv->ibss_beacon) | |
6310 | dev_kfree_skb(priv->ibss_beacon); | |
6311 | ||
6312 | priv->ibss_beacon = conf->beacon; | |
6313 | } | |
6314 | ||
fee1247a | 6315 | if (iwl_is_rfkill(priv)) |
fde3571f MA |
6316 | goto done; |
6317 | ||
b481de9c ZY |
6318 | if (conf->bssid && !is_zero_ether_addr(conf->bssid) && |
6319 | !is_multicast_ether_addr(conf->bssid)) { | |
6320 | /* If there is currently a HW scan going on in the background | |
6321 | * then we need to cancel it else the RXON below will fail. */ | |
bb8c093b | 6322 | if (iwl4965_scan_cancel_timeout(priv, 100)) { |
b481de9c ZY |
6323 | IWL_WARNING("Aborted scan still in progress " |
6324 | "after 100ms\n"); | |
6325 | IWL_DEBUG_MAC80211("leaving - scan abort failed.\n"); | |
6326 | mutex_unlock(&priv->mutex); | |
6327 | return -EAGAIN; | |
6328 | } | |
6329 | memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN); | |
6330 | ||
6331 | /* TODO: Audit driver for usage of these members and see | |
6332 | * if mac80211 deprecates them (priv->bssid looks like it | |
6333 | * shouldn't be there, but I haven't scanned the IBSS code | |
6334 | * to verify) - jpk */ | |
6335 | memcpy(priv->bssid, conf->bssid, ETH_ALEN); | |
6336 | ||
6337 | if (priv->iw_mode == IEEE80211_IF_TYPE_AP) | |
bb8c093b | 6338 | iwl4965_config_ap(priv); |
b481de9c | 6339 | else { |
bb8c093b | 6340 | rc = iwl4965_commit_rxon(priv); |
b481de9c | 6341 | if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc) |
bb8c093b | 6342 | iwl4965_rxon_add_station( |
b481de9c ZY |
6343 | priv, priv->active_rxon.bssid_addr, 1); |
6344 | } | |
6345 | ||
6346 | } else { | |
bb8c093b | 6347 | iwl4965_scan_cancel_timeout(priv, 100); |
b481de9c | 6348 | priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
bb8c093b | 6349 | iwl4965_commit_rxon(priv); |
b481de9c ZY |
6350 | } |
6351 | ||
fde3571f | 6352 | done: |
b481de9c ZY |
6353 | spin_lock_irqsave(&priv->lock, flags); |
6354 | if (!conf->ssid_len) | |
6355 | memset(priv->essid, 0, IW_ESSID_MAX_SIZE); | |
6356 | else | |
6357 | memcpy(priv->essid, conf->ssid, conf->ssid_len); | |
6358 | ||
6359 | priv->essid_len = conf->ssid_len; | |
6360 | spin_unlock_irqrestore(&priv->lock, flags); | |
6361 | ||
6362 | IWL_DEBUG_MAC80211("leave\n"); | |
6363 | mutex_unlock(&priv->mutex); | |
6364 | ||
6365 | return 0; | |
6366 | } | |
6367 | ||
bb8c093b | 6368 | static void iwl4965_configure_filter(struct ieee80211_hw *hw, |
4150c572 JB |
6369 | unsigned int changed_flags, |
6370 | unsigned int *total_flags, | |
6371 | int mc_count, struct dev_addr_list *mc_list) | |
6372 | { | |
6373 | /* | |
6374 | * XXX: dummy | |
bb8c093b | 6375 | * see also iwl4965_connection_init_rx_config |
4150c572 JB |
6376 | */ |
6377 | *total_flags = 0; | |
6378 | } | |
6379 | ||
bb8c093b | 6380 | static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw, |
b481de9c ZY |
6381 | struct ieee80211_if_init_conf *conf) |
6382 | { | |
c79dd5b5 | 6383 | struct iwl_priv *priv = hw->priv; |
b481de9c ZY |
6384 | |
6385 | IWL_DEBUG_MAC80211("enter\n"); | |
6386 | ||
6387 | mutex_lock(&priv->mutex); | |
948c171c | 6388 | |
fee1247a | 6389 | if (iwl_is_ready_rf(priv)) { |
fde3571f MA |
6390 | iwl4965_scan_cancel_timeout(priv, 100); |
6391 | cancel_delayed_work(&priv->post_associate); | |
6392 | priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; | |
6393 | iwl4965_commit_rxon(priv); | |
6394 | } | |
32bfd35d JB |
6395 | if (priv->vif == conf->vif) { |
6396 | priv->vif = NULL; | |
b481de9c ZY |
6397 | memset(priv->bssid, 0, ETH_ALEN); |
6398 | memset(priv->essid, 0, IW_ESSID_MAX_SIZE); | |
6399 | priv->essid_len = 0; | |
6400 | } | |
6401 | mutex_unlock(&priv->mutex); | |
6402 | ||
6403 | IWL_DEBUG_MAC80211("leave\n"); | |
6404 | ||
6405 | } | |
471b3efd | 6406 | |
3109ece1 | 6407 | #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6) |
471b3efd JB |
6408 | static void iwl4965_bss_info_changed(struct ieee80211_hw *hw, |
6409 | struct ieee80211_vif *vif, | |
6410 | struct ieee80211_bss_conf *bss_conf, | |
6411 | u32 changes) | |
220173b0 | 6412 | { |
c79dd5b5 | 6413 | struct iwl_priv *priv = hw->priv; |
220173b0 | 6414 | |
3109ece1 TW |
6415 | IWL_DEBUG_MAC80211("changes = 0x%X\n", changes); |
6416 | ||
471b3efd | 6417 | if (changes & BSS_CHANGED_ERP_PREAMBLE) { |
3109ece1 TW |
6418 | IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n", |
6419 | bss_conf->use_short_preamble); | |
471b3efd | 6420 | if (bss_conf->use_short_preamble) |
220173b0 TW |
6421 | priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; |
6422 | else | |
6423 | priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; | |
6424 | } | |
6425 | ||
471b3efd | 6426 | if (changes & BSS_CHANGED_ERP_CTS_PROT) { |
3109ece1 | 6427 | IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot); |
8318d78a | 6428 | if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ)) |
220173b0 TW |
6429 | priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK; |
6430 | else | |
6431 | priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK; | |
6432 | } | |
6433 | ||
98952d5d | 6434 | if (changes & BSS_CHANGED_HT) { |
3109ece1 | 6435 | IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht); |
98952d5d TW |
6436 | iwl4965_ht_conf(priv, bss_conf); |
6437 | iwl4965_set_rxon_chain(priv); | |
6438 | } | |
6439 | ||
471b3efd | 6440 | if (changes & BSS_CHANGED_ASSOC) { |
3109ece1 | 6441 | IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc); |
508e32e1 RC |
6442 | /* This should never happen as this function should |
6443 | * never be called from interrupt context. */ | |
6444 | if (WARN_ON_ONCE(in_interrupt())) | |
6445 | return; | |
3109ece1 TW |
6446 | if (bss_conf->assoc) { |
6447 | priv->assoc_id = bss_conf->aid; | |
6448 | priv->beacon_int = bss_conf->beacon_int; | |
6449 | priv->timestamp = bss_conf->timestamp; | |
6450 | priv->assoc_capability = bss_conf->assoc_capability; | |
6451 | priv->next_scan_jiffies = jiffies + | |
6452 | IWL_DELAY_NEXT_SCAN_AFTER_ASSOC; | |
508e32e1 RC |
6453 | mutex_lock(&priv->mutex); |
6454 | iwl4965_post_associate(priv); | |
6455 | mutex_unlock(&priv->mutex); | |
3109ece1 TW |
6456 | } else { |
6457 | priv->assoc_id = 0; | |
6458 | IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc); | |
6459 | } | |
6460 | } else if (changes && iwl_is_associated(priv) && priv->assoc_id) { | |
6461 | IWL_DEBUG_MAC80211("Associated Changes %d\n", changes); | |
7e8c519e | 6462 | iwl_send_rxon_assoc(priv); |
471b3efd JB |
6463 | } |
6464 | ||
220173b0 | 6465 | } |
b481de9c | 6466 | |
bb8c093b | 6467 | static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len) |
b481de9c ZY |
6468 | { |
6469 | int rc = 0; | |
6470 | unsigned long flags; | |
c79dd5b5 | 6471 | struct iwl_priv *priv = hw->priv; |
b481de9c ZY |
6472 | |
6473 | IWL_DEBUG_MAC80211("enter\n"); | |
6474 | ||
052c4b9f | 6475 | mutex_lock(&priv->mutex); |
b481de9c ZY |
6476 | spin_lock_irqsave(&priv->lock, flags); |
6477 | ||
fee1247a | 6478 | if (!iwl_is_ready_rf(priv)) { |
b481de9c ZY |
6479 | rc = -EIO; |
6480 | IWL_DEBUG_MAC80211("leave - not ready or exit pending\n"); | |
6481 | goto out_unlock; | |
6482 | } | |
6483 | ||
6484 | if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */ | |
6485 | rc = -EIO; | |
6486 | IWL_ERROR("ERROR: APs don't scan\n"); | |
6487 | goto out_unlock; | |
6488 | } | |
6489 | ||
7878a5a4 MA |
6490 | /* we don't schedule scan within next_scan_jiffies period */ |
6491 | if (priv->next_scan_jiffies && | |
6492 | time_after(priv->next_scan_jiffies, jiffies)) { | |
6493 | rc = -EAGAIN; | |
6494 | goto out_unlock; | |
6495 | } | |
b481de9c | 6496 | /* if we just finished scan ask for delay */ |
7878a5a4 MA |
6497 | if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies + |
6498 | IWL_DELAY_NEXT_SCAN, jiffies)) { | |
b481de9c ZY |
6499 | rc = -EAGAIN; |
6500 | goto out_unlock; | |
6501 | } | |
6502 | if (len) { | |
7878a5a4 | 6503 | IWL_DEBUG_SCAN("direct scan for %s [%d]\n ", |
bb8c093b | 6504 | iwl4965_escape_essid(ssid, len), (int)len); |
b481de9c ZY |
6505 | |
6506 | priv->one_direct_scan = 1; | |
6507 | priv->direct_ssid_len = (u8) | |
6508 | min((u8) len, (u8) IW_ESSID_MAX_SIZE); | |
6509 | memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len); | |
948c171c MA |
6510 | } else |
6511 | priv->one_direct_scan = 0; | |
b481de9c | 6512 | |
bb8c093b | 6513 | rc = iwl4965_scan_initiate(priv); |
b481de9c ZY |
6514 | |
6515 | IWL_DEBUG_MAC80211("leave\n"); | |
6516 | ||
6517 | out_unlock: | |
6518 | spin_unlock_irqrestore(&priv->lock, flags); | |
052c4b9f | 6519 | mutex_unlock(&priv->mutex); |
b481de9c ZY |
6520 | |
6521 | return rc; | |
6522 | } | |
6523 | ||
ab885f8c EG |
6524 | static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw, |
6525 | struct ieee80211_key_conf *keyconf, const u8 *addr, | |
6526 | u32 iv32, u16 *phase1key) | |
6527 | { | |
6528 | struct iwl_priv *priv = hw->priv; | |
6529 | u8 sta_id = IWL_INVALID_STATION; | |
6530 | unsigned long flags; | |
6531 | __le16 key_flags = 0; | |
6532 | int i; | |
6533 | DECLARE_MAC_BUF(mac); | |
6534 | ||
6535 | IWL_DEBUG_MAC80211("enter\n"); | |
6536 | ||
947b13a7 | 6537 | sta_id = iwl_find_station(priv, addr); |
ab885f8c EG |
6538 | if (sta_id == IWL_INVALID_STATION) { |
6539 | IWL_DEBUG_MAC80211("leave - %s not in station map.\n", | |
6540 | print_mac(mac, addr)); | |
6541 | return; | |
6542 | } | |
6543 | ||
6544 | iwl4965_scan_cancel_timeout(priv, 100); | |
6545 | ||
6546 | key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK); | |
6547 | key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); | |
6548 | key_flags &= ~STA_KEY_FLG_INVALID; | |
6549 | ||
5425e490 | 6550 | if (sta_id == priv->hw_params.bcast_sta_id) |
ab885f8c EG |
6551 | key_flags |= STA_KEY_MULTICAST_MSK; |
6552 | ||
6553 | spin_lock_irqsave(&priv->sta_lock, flags); | |
6554 | ||
ab885f8c EG |
6555 | priv->stations[sta_id].sta.key.key_flags = key_flags; |
6556 | priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32; | |
6557 | ||
6558 | for (i = 0; i < 5; i++) | |
6559 | priv->stations[sta_id].sta.key.tkip_rx_ttak[i] = | |
6560 | cpu_to_le16(phase1key[i]); | |
6561 | ||
6562 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; | |
6563 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
6564 | ||
6565 | iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC); | |
6566 | ||
6567 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
6568 | ||
6569 | IWL_DEBUG_MAC80211("leave\n"); | |
6570 | } | |
6571 | ||
bb8c093b | 6572 | static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, |
b481de9c ZY |
6573 | const u8 *local_addr, const u8 *addr, |
6574 | struct ieee80211_key_conf *key) | |
6575 | { | |
c79dd5b5 | 6576 | struct iwl_priv *priv = hw->priv; |
0795af57 | 6577 | DECLARE_MAC_BUF(mac); |
deb09c43 EG |
6578 | int ret = 0; |
6579 | u8 sta_id = IWL_INVALID_STATION; | |
6974e363 | 6580 | u8 is_default_wep_key = 0; |
b481de9c ZY |
6581 | |
6582 | IWL_DEBUG_MAC80211("enter\n"); | |
6583 | ||
099b40b7 | 6584 | if (priv->hw_params.sw_crypto) { |
b481de9c ZY |
6585 | IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n"); |
6586 | return -EOPNOTSUPP; | |
6587 | } | |
6588 | ||
6589 | if (is_zero_ether_addr(addr)) | |
6590 | /* only support pairwise keys */ | |
6591 | return -EOPNOTSUPP; | |
6592 | ||
947b13a7 | 6593 | sta_id = iwl_find_station(priv, addr); |
6974e363 EG |
6594 | if (sta_id == IWL_INVALID_STATION) { |
6595 | IWL_DEBUG_MAC80211("leave - %s not in station map.\n", | |
6596 | print_mac(mac, addr)); | |
6597 | return -EINVAL; | |
b481de9c | 6598 | |
deb09c43 | 6599 | } |
b481de9c | 6600 | |
6974e363 | 6601 | mutex_lock(&priv->mutex); |
bb8c093b | 6602 | iwl4965_scan_cancel_timeout(priv, 100); |
6974e363 EG |
6603 | mutex_unlock(&priv->mutex); |
6604 | ||
6605 | /* If we are getting WEP group key and we didn't receive any key mapping | |
6606 | * so far, we are in legacy wep mode (group key only), otherwise we are | |
6607 | * in 1X mode. | |
6608 | * In legacy wep mode, we use another host command to the uCode */ | |
5425e490 | 6609 | if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id && |
6974e363 EG |
6610 | priv->iw_mode != IEEE80211_IF_TYPE_AP) { |
6611 | if (cmd == SET_KEY) | |
6612 | is_default_wep_key = !priv->key_mapping_key; | |
6613 | else | |
6614 | is_default_wep_key = priv->default_wep_key; | |
6615 | } | |
052c4b9f | 6616 | |
b481de9c | 6617 | switch (cmd) { |
deb09c43 | 6618 | case SET_KEY: |
6974e363 EG |
6619 | if (is_default_wep_key) |
6620 | ret = iwl_set_default_wep_key(priv, key); | |
deb09c43 | 6621 | else |
7480513f | 6622 | ret = iwl_set_dynamic_key(priv, key, sta_id); |
deb09c43 EG |
6623 | |
6624 | IWL_DEBUG_MAC80211("enable hwcrypto key\n"); | |
b481de9c ZY |
6625 | break; |
6626 | case DISABLE_KEY: | |
6974e363 EG |
6627 | if (is_default_wep_key) |
6628 | ret = iwl_remove_default_wep_key(priv, key); | |
deb09c43 | 6629 | else |
3ec47732 | 6630 | ret = iwl_remove_dynamic_key(priv, key, sta_id); |
deb09c43 EG |
6631 | |
6632 | IWL_DEBUG_MAC80211("disable hwcrypto key\n"); | |
b481de9c ZY |
6633 | break; |
6634 | default: | |
deb09c43 | 6635 | ret = -EINVAL; |
b481de9c ZY |
6636 | } |
6637 | ||
6638 | IWL_DEBUG_MAC80211("leave\n"); | |
b481de9c | 6639 | |
deb09c43 | 6640 | return ret; |
b481de9c ZY |
6641 | } |
6642 | ||
bb8c093b | 6643 | static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, int queue, |
b481de9c ZY |
6644 | const struct ieee80211_tx_queue_params *params) |
6645 | { | |
c79dd5b5 | 6646 | struct iwl_priv *priv = hw->priv; |
b481de9c ZY |
6647 | unsigned long flags; |
6648 | int q; | |
b481de9c ZY |
6649 | |
6650 | IWL_DEBUG_MAC80211("enter\n"); | |
6651 | ||
fee1247a | 6652 | if (!iwl_is_ready_rf(priv)) { |
b481de9c ZY |
6653 | IWL_DEBUG_MAC80211("leave - RF not ready\n"); |
6654 | return -EIO; | |
6655 | } | |
6656 | ||
6657 | if (queue >= AC_NUM) { | |
6658 | IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue); | |
6659 | return 0; | |
6660 | } | |
6661 | ||
b481de9c ZY |
6662 | if (!priv->qos_data.qos_enable) { |
6663 | priv->qos_data.qos_active = 0; | |
6664 | IWL_DEBUG_MAC80211("leave - qos not enabled\n"); | |
6665 | return 0; | |
6666 | } | |
6667 | q = AC_NUM - 1 - queue; | |
6668 | ||
6669 | spin_lock_irqsave(&priv->lock, flags); | |
6670 | ||
6671 | priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min); | |
6672 | priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max); | |
6673 | priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs; | |
6674 | priv->qos_data.def_qos_parm.ac[q].edca_txop = | |
3330d7be | 6675 | cpu_to_le16((params->txop * 32)); |
b481de9c ZY |
6676 | |
6677 | priv->qos_data.def_qos_parm.ac[q].reserved1 = 0; | |
6678 | priv->qos_data.qos_active = 1; | |
6679 | ||
6680 | spin_unlock_irqrestore(&priv->lock, flags); | |
6681 | ||
6682 | mutex_lock(&priv->mutex); | |
6683 | if (priv->iw_mode == IEEE80211_IF_TYPE_AP) | |
bb8c093b | 6684 | iwl4965_activate_qos(priv, 1); |
3109ece1 | 6685 | else if (priv->assoc_id && iwl_is_associated(priv)) |
bb8c093b | 6686 | iwl4965_activate_qos(priv, 0); |
b481de9c ZY |
6687 | |
6688 | mutex_unlock(&priv->mutex); | |
6689 | ||
b481de9c ZY |
6690 | IWL_DEBUG_MAC80211("leave\n"); |
6691 | return 0; | |
6692 | } | |
6693 | ||
bb8c093b | 6694 | static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw, |
b481de9c ZY |
6695 | struct ieee80211_tx_queue_stats *stats) |
6696 | { | |
c79dd5b5 | 6697 | struct iwl_priv *priv = hw->priv; |
b481de9c | 6698 | int i, avail; |
bb8c093b CH |
6699 | struct iwl4965_tx_queue *txq; |
6700 | struct iwl4965_queue *q; | |
b481de9c ZY |
6701 | unsigned long flags; |
6702 | ||
6703 | IWL_DEBUG_MAC80211("enter\n"); | |
6704 | ||
fee1247a | 6705 | if (!iwl_is_ready_rf(priv)) { |
b481de9c ZY |
6706 | IWL_DEBUG_MAC80211("leave - RF not ready\n"); |
6707 | return -EIO; | |
6708 | } | |
6709 | ||
6710 | spin_lock_irqsave(&priv->lock, flags); | |
6711 | ||
6712 | for (i = 0; i < AC_NUM; i++) { | |
6713 | txq = &priv->txq[i]; | |
6714 | q = &txq->q; | |
bb8c093b | 6715 | avail = iwl4965_queue_space(q); |
b481de9c ZY |
6716 | |
6717 | stats->data[i].len = q->n_window - avail; | |
6718 | stats->data[i].limit = q->n_window - q->high_mark; | |
6719 | stats->data[i].count = q->n_window; | |
6720 | ||
6721 | } | |
6722 | spin_unlock_irqrestore(&priv->lock, flags); | |
6723 | ||
6724 | IWL_DEBUG_MAC80211("leave\n"); | |
6725 | ||
6726 | return 0; | |
6727 | } | |
6728 | ||
bb8c093b | 6729 | static int iwl4965_mac_get_stats(struct ieee80211_hw *hw, |
b481de9c ZY |
6730 | struct ieee80211_low_level_stats *stats) |
6731 | { | |
6732 | IWL_DEBUG_MAC80211("enter\n"); | |
6733 | IWL_DEBUG_MAC80211("leave\n"); | |
6734 | ||
6735 | return 0; | |
6736 | } | |
6737 | ||
bb8c093b | 6738 | static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw) |
b481de9c ZY |
6739 | { |
6740 | IWL_DEBUG_MAC80211("enter\n"); | |
6741 | IWL_DEBUG_MAC80211("leave\n"); | |
6742 | ||
6743 | return 0; | |
6744 | } | |
6745 | ||
bb8c093b | 6746 | static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw) |
b481de9c | 6747 | { |
c79dd5b5 | 6748 | struct iwl_priv *priv = hw->priv; |
b481de9c ZY |
6749 | unsigned long flags; |
6750 | ||
6751 | mutex_lock(&priv->mutex); | |
6752 | IWL_DEBUG_MAC80211("enter\n"); | |
6753 | ||
6754 | priv->lq_mngr.lq_ready = 0; | |
c8b0e6e1 | 6755 | #ifdef CONFIG_IWL4965_HT |
b481de9c | 6756 | spin_lock_irqsave(&priv->lock, flags); |
fd105e79 | 6757 | memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info)); |
b481de9c | 6758 | spin_unlock_irqrestore(&priv->lock, flags); |
c8b0e6e1 | 6759 | #endif /* CONFIG_IWL4965_HT */ |
b481de9c | 6760 | |
bf85ea4f | 6761 | iwlcore_reset_qos(priv); |
b481de9c ZY |
6762 | |
6763 | cancel_delayed_work(&priv->post_associate); | |
6764 | ||
6765 | spin_lock_irqsave(&priv->lock, flags); | |
6766 | priv->assoc_id = 0; | |
6767 | priv->assoc_capability = 0; | |
b481de9c ZY |
6768 | priv->assoc_station_added = 0; |
6769 | ||
6770 | /* new association get rid of ibss beacon skb */ | |
6771 | if (priv->ibss_beacon) | |
6772 | dev_kfree_skb(priv->ibss_beacon); | |
6773 | ||
6774 | priv->ibss_beacon = NULL; | |
6775 | ||
6776 | priv->beacon_int = priv->hw->conf.beacon_int; | |
3109ece1 | 6777 | priv->timestamp = 0; |
b481de9c ZY |
6778 | if ((priv->iw_mode == IEEE80211_IF_TYPE_STA)) |
6779 | priv->beacon_int = 0; | |
6780 | ||
6781 | spin_unlock_irqrestore(&priv->lock, flags); | |
6782 | ||
fee1247a | 6783 | if (!iwl_is_ready_rf(priv)) { |
fde3571f MA |
6784 | IWL_DEBUG_MAC80211("leave - not ready\n"); |
6785 | mutex_unlock(&priv->mutex); | |
6786 | return; | |
6787 | } | |
6788 | ||
052c4b9f | 6789 | /* we are restarting association process |
6790 | * clear RXON_FILTER_ASSOC_MSK bit | |
6791 | */ | |
6792 | if (priv->iw_mode != IEEE80211_IF_TYPE_AP) { | |
bb8c093b | 6793 | iwl4965_scan_cancel_timeout(priv, 100); |
052c4b9f | 6794 | priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
bb8c093b | 6795 | iwl4965_commit_rxon(priv); |
052c4b9f | 6796 | } |
6797 | ||
5da4b55f MA |
6798 | iwl_power_update_mode(priv, 0); |
6799 | ||
b481de9c ZY |
6800 | /* Per mac80211.h: This is only used in IBSS mode... */ |
6801 | if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) { | |
052c4b9f | 6802 | |
b481de9c ZY |
6803 | IWL_DEBUG_MAC80211("leave - not in IBSS\n"); |
6804 | mutex_unlock(&priv->mutex); | |
6805 | return; | |
6806 | } | |
6807 | ||
bb8c093b | 6808 | iwl4965_set_rate(priv); |
b481de9c ZY |
6809 | |
6810 | mutex_unlock(&priv->mutex); | |
6811 | ||
6812 | IWL_DEBUG_MAC80211("leave\n"); | |
b481de9c ZY |
6813 | } |
6814 | ||
bb8c093b | 6815 | static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb, |
b481de9c ZY |
6816 | struct ieee80211_tx_control *control) |
6817 | { | |
c79dd5b5 | 6818 | struct iwl_priv *priv = hw->priv; |
b481de9c ZY |
6819 | unsigned long flags; |
6820 | ||
6821 | mutex_lock(&priv->mutex); | |
6822 | IWL_DEBUG_MAC80211("enter\n"); | |
6823 | ||
fee1247a | 6824 | if (!iwl_is_ready_rf(priv)) { |
b481de9c ZY |
6825 | IWL_DEBUG_MAC80211("leave - RF not ready\n"); |
6826 | mutex_unlock(&priv->mutex); | |
6827 | return -EIO; | |
6828 | } | |
6829 | ||
6830 | if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) { | |
6831 | IWL_DEBUG_MAC80211("leave - not IBSS\n"); | |
6832 | mutex_unlock(&priv->mutex); | |
6833 | return -EIO; | |
6834 | } | |
6835 | ||
6836 | spin_lock_irqsave(&priv->lock, flags); | |
6837 | ||
6838 | if (priv->ibss_beacon) | |
6839 | dev_kfree_skb(priv->ibss_beacon); | |
6840 | ||
6841 | priv->ibss_beacon = skb; | |
6842 | ||
6843 | priv->assoc_id = 0; | |
6844 | ||
6845 | IWL_DEBUG_MAC80211("leave\n"); | |
6846 | spin_unlock_irqrestore(&priv->lock, flags); | |
6847 | ||
bf85ea4f | 6848 | iwlcore_reset_qos(priv); |
b481de9c ZY |
6849 | |
6850 | queue_work(priv->workqueue, &priv->post_associate.work); | |
6851 | ||
6852 | mutex_unlock(&priv->mutex); | |
6853 | ||
6854 | return 0; | |
6855 | } | |
6856 | ||
b481de9c ZY |
6857 | /***************************************************************************** |
6858 | * | |
6859 | * sysfs attributes | |
6860 | * | |
6861 | *****************************************************************************/ | |
6862 | ||
0a6857e7 | 6863 | #ifdef CONFIG_IWLWIFI_DEBUG |
b481de9c ZY |
6864 | |
6865 | /* | |
6866 | * The following adds a new attribute to the sysfs representation | |
6867 | * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/) | |
6868 | * used for controlling the debug level. | |
6869 | * | |
6870 | * See the level definitions in iwl for details. | |
6871 | */ | |
6872 | ||
6873 | static ssize_t show_debug_level(struct device_driver *d, char *buf) | |
6874 | { | |
0a6857e7 | 6875 | return sprintf(buf, "0x%08X\n", iwl_debug_level); |
b481de9c ZY |
6876 | } |
6877 | static ssize_t store_debug_level(struct device_driver *d, | |
6878 | const char *buf, size_t count) | |
6879 | { | |
6880 | char *p = (char *)buf; | |
6881 | u32 val; | |
6882 | ||
6883 | val = simple_strtoul(p, &p, 0); | |
6884 | if (p == buf) | |
6885 | printk(KERN_INFO DRV_NAME | |
6886 | ": %s is not in hex or decimal form.\n", buf); | |
6887 | else | |
0a6857e7 | 6888 | iwl_debug_level = val; |
b481de9c ZY |
6889 | |
6890 | return strnlen(buf, count); | |
6891 | } | |
6892 | ||
6893 | static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO, | |
6894 | show_debug_level, store_debug_level); | |
6895 | ||
0a6857e7 | 6896 | #endif /* CONFIG_IWLWIFI_DEBUG */ |
b481de9c | 6897 | |
b481de9c ZY |
6898 | |
6899 | static ssize_t show_temperature(struct device *d, | |
6900 | struct device_attribute *attr, char *buf) | |
6901 | { | |
c79dd5b5 | 6902 | struct iwl_priv *priv = (struct iwl_priv *)d->driver_data; |
b481de9c | 6903 | |
fee1247a | 6904 | if (!iwl_is_alive(priv)) |
b481de9c ZY |
6905 | return -EAGAIN; |
6906 | ||
bb8c093b | 6907 | return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv)); |
b481de9c ZY |
6908 | } |
6909 | ||
6910 | static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL); | |
6911 | ||
6912 | static ssize_t show_rs_window(struct device *d, | |
6913 | struct device_attribute *attr, | |
6914 | char *buf) | |
6915 | { | |
c79dd5b5 | 6916 | struct iwl_priv *priv = d->driver_data; |
bb8c093b | 6917 | return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID); |
b481de9c ZY |
6918 | } |
6919 | static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL); | |
6920 | ||
6921 | static ssize_t show_tx_power(struct device *d, | |
6922 | struct device_attribute *attr, char *buf) | |
6923 | { | |
c79dd5b5 | 6924 | struct iwl_priv *priv = (struct iwl_priv *)d->driver_data; |
b481de9c ZY |
6925 | return sprintf(buf, "%d\n", priv->user_txpower_limit); |
6926 | } | |
6927 | ||
6928 | static ssize_t store_tx_power(struct device *d, | |
6929 | struct device_attribute *attr, | |
6930 | const char *buf, size_t count) | |
6931 | { | |
c79dd5b5 | 6932 | struct iwl_priv *priv = (struct iwl_priv *)d->driver_data; |
b481de9c ZY |
6933 | char *p = (char *)buf; |
6934 | u32 val; | |
6935 | ||
6936 | val = simple_strtoul(p, &p, 10); | |
6937 | if (p == buf) | |
6938 | printk(KERN_INFO DRV_NAME | |
6939 | ": %s is not in decimal form.\n", buf); | |
6940 | else | |
bb8c093b | 6941 | iwl4965_hw_reg_set_txpower(priv, val); |
b481de9c ZY |
6942 | |
6943 | return count; | |
6944 | } | |
6945 | ||
6946 | static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power); | |
6947 | ||
6948 | static ssize_t show_flags(struct device *d, | |
6949 | struct device_attribute *attr, char *buf) | |
6950 | { | |
c79dd5b5 | 6951 | struct iwl_priv *priv = (struct iwl_priv *)d->driver_data; |
b481de9c ZY |
6952 | |
6953 | return sprintf(buf, "0x%04X\n", priv->active_rxon.flags); | |
6954 | } | |
6955 | ||
6956 | static ssize_t store_flags(struct device *d, | |
6957 | struct device_attribute *attr, | |
6958 | const char *buf, size_t count) | |
6959 | { | |
c79dd5b5 | 6960 | struct iwl_priv *priv = (struct iwl_priv *)d->driver_data; |
b481de9c ZY |
6961 | u32 flags = simple_strtoul(buf, NULL, 0); |
6962 | ||
6963 | mutex_lock(&priv->mutex); | |
6964 | if (le32_to_cpu(priv->staging_rxon.flags) != flags) { | |
6965 | /* Cancel any currently running scans... */ | |
bb8c093b | 6966 | if (iwl4965_scan_cancel_timeout(priv, 100)) |
b481de9c ZY |
6967 | IWL_WARNING("Could not cancel scan.\n"); |
6968 | else { | |
6969 | IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n", | |
6970 | flags); | |
6971 | priv->staging_rxon.flags = cpu_to_le32(flags); | |
bb8c093b | 6972 | iwl4965_commit_rxon(priv); |
b481de9c ZY |
6973 | } |
6974 | } | |
6975 | mutex_unlock(&priv->mutex); | |
6976 | ||
6977 | return count; | |
6978 | } | |
6979 | ||
6980 | static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags); | |
6981 | ||
6982 | static ssize_t show_filter_flags(struct device *d, | |
6983 | struct device_attribute *attr, char *buf) | |
6984 | { | |
c79dd5b5 | 6985 | struct iwl_priv *priv = (struct iwl_priv *)d->driver_data; |
b481de9c ZY |
6986 | |
6987 | return sprintf(buf, "0x%04X\n", | |
6988 | le32_to_cpu(priv->active_rxon.filter_flags)); | |
6989 | } | |
6990 | ||
6991 | static ssize_t store_filter_flags(struct device *d, | |
6992 | struct device_attribute *attr, | |
6993 | const char *buf, size_t count) | |
6994 | { | |
c79dd5b5 | 6995 | struct iwl_priv *priv = (struct iwl_priv *)d->driver_data; |
b481de9c ZY |
6996 | u32 filter_flags = simple_strtoul(buf, NULL, 0); |
6997 | ||
6998 | mutex_lock(&priv->mutex); | |
6999 | if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) { | |
7000 | /* Cancel any currently running scans... */ | |
bb8c093b | 7001 | if (iwl4965_scan_cancel_timeout(priv, 100)) |
b481de9c ZY |
7002 | IWL_WARNING("Could not cancel scan.\n"); |
7003 | else { | |
7004 | IWL_DEBUG_INFO("Committing rxon.filter_flags = " | |
7005 | "0x%04X\n", filter_flags); | |
7006 | priv->staging_rxon.filter_flags = | |
7007 | cpu_to_le32(filter_flags); | |
bb8c093b | 7008 | iwl4965_commit_rxon(priv); |
b481de9c ZY |
7009 | } |
7010 | } | |
7011 | mutex_unlock(&priv->mutex); | |
7012 | ||
7013 | return count; | |
7014 | } | |
7015 | ||
7016 | static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags, | |
7017 | store_filter_flags); | |
7018 | ||
c8b0e6e1 | 7019 | #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT |
b481de9c ZY |
7020 | |
7021 | static ssize_t show_measurement(struct device *d, | |
7022 | struct device_attribute *attr, char *buf) | |
7023 | { | |
c79dd5b5 | 7024 | struct iwl_priv *priv = dev_get_drvdata(d); |
bb8c093b | 7025 | struct iwl4965_spectrum_notification measure_report; |
b481de9c ZY |
7026 | u32 size = sizeof(measure_report), len = 0, ofs = 0; |
7027 | u8 *data = (u8 *) & measure_report; | |
7028 | unsigned long flags; | |
7029 | ||
7030 | spin_lock_irqsave(&priv->lock, flags); | |
7031 | if (!(priv->measurement_status & MEASUREMENT_READY)) { | |
7032 | spin_unlock_irqrestore(&priv->lock, flags); | |
7033 | return 0; | |
7034 | } | |
7035 | memcpy(&measure_report, &priv->measure_report, size); | |
7036 | priv->measurement_status = 0; | |
7037 | spin_unlock_irqrestore(&priv->lock, flags); | |
7038 | ||
7039 | while (size && (PAGE_SIZE - len)) { | |
7040 | hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len, | |
7041 | PAGE_SIZE - len, 1); | |
7042 | len = strlen(buf); | |
7043 | if (PAGE_SIZE - len) | |
7044 | buf[len++] = '\n'; | |
7045 | ||
7046 | ofs += 16; | |
7047 | size -= min(size, 16U); | |
7048 | } | |
7049 | ||
7050 | return len; | |
7051 | } | |
7052 | ||
7053 | static ssize_t store_measurement(struct device *d, | |
7054 | struct device_attribute *attr, | |
7055 | const char *buf, size_t count) | |
7056 | { | |
c79dd5b5 | 7057 | struct iwl_priv *priv = dev_get_drvdata(d); |
b481de9c ZY |
7058 | struct ieee80211_measurement_params params = { |
7059 | .channel = le16_to_cpu(priv->active_rxon.channel), | |
7060 | .start_time = cpu_to_le64(priv->last_tsf), | |
7061 | .duration = cpu_to_le16(1), | |
7062 | }; | |
7063 | u8 type = IWL_MEASURE_BASIC; | |
7064 | u8 buffer[32]; | |
7065 | u8 channel; | |
7066 | ||
7067 | if (count) { | |
7068 | char *p = buffer; | |
7069 | strncpy(buffer, buf, min(sizeof(buffer), count)); | |
7070 | channel = simple_strtoul(p, NULL, 0); | |
7071 | if (channel) | |
7072 | params.channel = channel; | |
7073 | ||
7074 | p = buffer; | |
7075 | while (*p && *p != ' ') | |
7076 | p++; | |
7077 | if (*p) | |
7078 | type = simple_strtoul(p + 1, NULL, 0); | |
7079 | } | |
7080 | ||
7081 | IWL_DEBUG_INFO("Invoking measurement of type %d on " | |
7082 | "channel %d (for '%s')\n", type, params.channel, buf); | |
bb8c093b | 7083 | iwl4965_get_measurement(priv, ¶ms, type); |
b481de9c ZY |
7084 | |
7085 | return count; | |
7086 | } | |
7087 | ||
7088 | static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR, | |
7089 | show_measurement, store_measurement); | |
c8b0e6e1 | 7090 | #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */ |
b481de9c ZY |
7091 | |
7092 | static ssize_t store_retry_rate(struct device *d, | |
7093 | struct device_attribute *attr, | |
7094 | const char *buf, size_t count) | |
7095 | { | |
c79dd5b5 | 7096 | struct iwl_priv *priv = dev_get_drvdata(d); |
b481de9c ZY |
7097 | |
7098 | priv->retry_rate = simple_strtoul(buf, NULL, 0); | |
7099 | if (priv->retry_rate <= 0) | |
7100 | priv->retry_rate = 1; | |
7101 | ||
7102 | return count; | |
7103 | } | |
7104 | ||
7105 | static ssize_t show_retry_rate(struct device *d, | |
7106 | struct device_attribute *attr, char *buf) | |
7107 | { | |
c79dd5b5 | 7108 | struct iwl_priv *priv = dev_get_drvdata(d); |
b481de9c ZY |
7109 | return sprintf(buf, "%d", priv->retry_rate); |
7110 | } | |
7111 | ||
7112 | static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate, | |
7113 | store_retry_rate); | |
7114 | ||
7115 | static ssize_t store_power_level(struct device *d, | |
7116 | struct device_attribute *attr, | |
7117 | const char *buf, size_t count) | |
7118 | { | |
c79dd5b5 | 7119 | struct iwl_priv *priv = dev_get_drvdata(d); |
b481de9c ZY |
7120 | int rc; |
7121 | int mode; | |
7122 | ||
7123 | mode = simple_strtoul(buf, NULL, 0); | |
7124 | mutex_lock(&priv->mutex); | |
7125 | ||
fee1247a | 7126 | if (!iwl_is_ready(priv)) { |
b481de9c ZY |
7127 | rc = -EAGAIN; |
7128 | goto out; | |
7129 | } | |
7130 | ||
5da4b55f MA |
7131 | rc = iwl_power_set_user_mode(priv, mode); |
7132 | if (rc) { | |
7133 | IWL_DEBUG_MAC80211("failed setting power mode.\n"); | |
7134 | goto out; | |
b481de9c | 7135 | } |
b481de9c ZY |
7136 | rc = count; |
7137 | ||
7138 | out: | |
7139 | mutex_unlock(&priv->mutex); | |
7140 | return rc; | |
7141 | } | |
7142 | ||
7143 | #define MAX_WX_STRING 80 | |
7144 | ||
7145 | /* Values are in microsecond */ | |
7146 | static const s32 timeout_duration[] = { | |
7147 | 350000, | |
7148 | 250000, | |
7149 | 75000, | |
7150 | 37000, | |
7151 | 25000, | |
7152 | }; | |
7153 | static const s32 period_duration[] = { | |
7154 | 400000, | |
7155 | 700000, | |
7156 | 1000000, | |
7157 | 1000000, | |
7158 | 1000000 | |
7159 | }; | |
7160 | ||
7161 | static ssize_t show_power_level(struct device *d, | |
7162 | struct device_attribute *attr, char *buf) | |
7163 | { | |
c79dd5b5 | 7164 | struct iwl_priv *priv = dev_get_drvdata(d); |
5da4b55f | 7165 | int level = priv->power_data.power_mode; |
b481de9c ZY |
7166 | char *p = buf; |
7167 | ||
7168 | p += sprintf(p, "%d ", level); | |
7169 | switch (level) { | |
7170 | case IWL_POWER_MODE_CAM: | |
7171 | case IWL_POWER_AC: | |
7172 | p += sprintf(p, "(AC)"); | |
7173 | break; | |
7174 | case IWL_POWER_BATTERY: | |
7175 | p += sprintf(p, "(BATTERY)"); | |
7176 | break; | |
7177 | default: | |
7178 | p += sprintf(p, | |
7179 | "(Timeout %dms, Period %dms)", | |
7180 | timeout_duration[level - 1] / 1000, | |
7181 | period_duration[level - 1] / 1000); | |
7182 | } | |
5da4b55f | 7183 | /* |
b481de9c ZY |
7184 | if (!(priv->power_mode & IWL_POWER_ENABLED)) |
7185 | p += sprintf(p, " OFF\n"); | |
7186 | else | |
7187 | p += sprintf(p, " \n"); | |
5da4b55f MA |
7188 | */ |
7189 | p += sprintf(p, " \n"); | |
b481de9c | 7190 | return (p - buf + 1); |
b481de9c ZY |
7191 | } |
7192 | ||
7193 | static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level, | |
7194 | store_power_level); | |
7195 | ||
7196 | static ssize_t show_channels(struct device *d, | |
7197 | struct device_attribute *attr, char *buf) | |
7198 | { | |
8318d78a JB |
7199 | /* all this shit doesn't belong into sysfs anyway */ |
7200 | return 0; | |
b481de9c ZY |
7201 | } |
7202 | ||
7203 | static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL); | |
7204 | ||
7205 | static ssize_t show_statistics(struct device *d, | |
7206 | struct device_attribute *attr, char *buf) | |
7207 | { | |
c79dd5b5 | 7208 | struct iwl_priv *priv = dev_get_drvdata(d); |
bb8c093b | 7209 | u32 size = sizeof(struct iwl4965_notif_statistics); |
b481de9c ZY |
7210 | u32 len = 0, ofs = 0; |
7211 | u8 *data = (u8 *) & priv->statistics; | |
7212 | int rc = 0; | |
7213 | ||
fee1247a | 7214 | if (!iwl_is_alive(priv)) |
b481de9c ZY |
7215 | return -EAGAIN; |
7216 | ||
7217 | mutex_lock(&priv->mutex); | |
49ea8596 | 7218 | rc = iwl_send_statistics_request(priv, 0); |
b481de9c ZY |
7219 | mutex_unlock(&priv->mutex); |
7220 | ||
7221 | if (rc) { | |
7222 | len = sprintf(buf, | |
7223 | "Error sending statistics request: 0x%08X\n", rc); | |
7224 | return len; | |
7225 | } | |
7226 | ||
7227 | while (size && (PAGE_SIZE - len)) { | |
7228 | hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len, | |
7229 | PAGE_SIZE - len, 1); | |
7230 | len = strlen(buf); | |
7231 | if (PAGE_SIZE - len) | |
7232 | buf[len++] = '\n'; | |
7233 | ||
7234 | ofs += 16; | |
7235 | size -= min(size, 16U); | |
7236 | } | |
7237 | ||
7238 | return len; | |
7239 | } | |
7240 | ||
7241 | static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL); | |
7242 | ||
b481de9c ZY |
7243 | static ssize_t show_status(struct device *d, |
7244 | struct device_attribute *attr, char *buf) | |
7245 | { | |
c79dd5b5 | 7246 | struct iwl_priv *priv = (struct iwl_priv *)d->driver_data; |
fee1247a | 7247 | if (!iwl_is_alive(priv)) |
b481de9c ZY |
7248 | return -EAGAIN; |
7249 | return sprintf(buf, "0x%08x\n", (int)priv->status); | |
7250 | } | |
7251 | ||
7252 | static DEVICE_ATTR(status, S_IRUGO, show_status, NULL); | |
7253 | ||
7254 | static ssize_t dump_error_log(struct device *d, | |
7255 | struct device_attribute *attr, | |
7256 | const char *buf, size_t count) | |
7257 | { | |
7258 | char *p = (char *)buf; | |
7259 | ||
7260 | if (p[0] == '1') | |
c79dd5b5 | 7261 | iwl4965_dump_nic_error_log((struct iwl_priv *)d->driver_data); |
b481de9c ZY |
7262 | |
7263 | return strnlen(buf, count); | |
7264 | } | |
7265 | ||
7266 | static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log); | |
7267 | ||
7268 | static ssize_t dump_event_log(struct device *d, | |
7269 | struct device_attribute *attr, | |
7270 | const char *buf, size_t count) | |
7271 | { | |
7272 | char *p = (char *)buf; | |
7273 | ||
7274 | if (p[0] == '1') | |
c79dd5b5 | 7275 | iwl4965_dump_nic_event_log((struct iwl_priv *)d->driver_data); |
b481de9c ZY |
7276 | |
7277 | return strnlen(buf, count); | |
7278 | } | |
7279 | ||
7280 | static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log); | |
7281 | ||
7282 | /***************************************************************************** | |
7283 | * | |
7284 | * driver setup and teardown | |
7285 | * | |
7286 | *****************************************************************************/ | |
7287 | ||
c79dd5b5 | 7288 | static void iwl4965_setup_deferred_work(struct iwl_priv *priv) |
b481de9c ZY |
7289 | { |
7290 | priv->workqueue = create_workqueue(DRV_NAME); | |
7291 | ||
7292 | init_waitqueue_head(&priv->wait_command_queue); | |
7293 | ||
bb8c093b CH |
7294 | INIT_WORK(&priv->up, iwl4965_bg_up); |
7295 | INIT_WORK(&priv->restart, iwl4965_bg_restart); | |
7296 | INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish); | |
7297 | INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed); | |
7298 | INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan); | |
7299 | INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan); | |
7300 | INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill); | |
7301 | INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update); | |
7302 | INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate); | |
7303 | INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start); | |
7304 | INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start); | |
7305 | INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check); | |
7306 | ||
7307 | iwl4965_hw_setup_deferred_work(priv); | |
b481de9c ZY |
7308 | |
7309 | tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long)) | |
bb8c093b | 7310 | iwl4965_irq_tasklet, (unsigned long)priv); |
b481de9c ZY |
7311 | } |
7312 | ||
c79dd5b5 | 7313 | static void iwl4965_cancel_deferred_work(struct iwl_priv *priv) |
b481de9c | 7314 | { |
bb8c093b | 7315 | iwl4965_hw_cancel_deferred_work(priv); |
b481de9c | 7316 | |
3ae6a054 | 7317 | cancel_delayed_work_sync(&priv->init_alive_start); |
b481de9c ZY |
7318 | cancel_delayed_work(&priv->scan_check); |
7319 | cancel_delayed_work(&priv->alive_start); | |
7320 | cancel_delayed_work(&priv->post_associate); | |
7321 | cancel_work_sync(&priv->beacon_update); | |
7322 | } | |
7323 | ||
bb8c093b | 7324 | static struct attribute *iwl4965_sysfs_entries[] = { |
b481de9c ZY |
7325 | &dev_attr_channels.attr, |
7326 | &dev_attr_dump_errors.attr, | |
7327 | &dev_attr_dump_events.attr, | |
7328 | &dev_attr_flags.attr, | |
7329 | &dev_attr_filter_flags.attr, | |
c8b0e6e1 | 7330 | #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT |
b481de9c ZY |
7331 | &dev_attr_measurement.attr, |
7332 | #endif | |
7333 | &dev_attr_power_level.attr, | |
7334 | &dev_attr_retry_rate.attr, | |
b481de9c ZY |
7335 | &dev_attr_rs_window.attr, |
7336 | &dev_attr_statistics.attr, | |
7337 | &dev_attr_status.attr, | |
7338 | &dev_attr_temperature.attr, | |
b481de9c ZY |
7339 | &dev_attr_tx_power.attr, |
7340 | ||
7341 | NULL | |
7342 | }; | |
7343 | ||
bb8c093b | 7344 | static struct attribute_group iwl4965_attribute_group = { |
b481de9c | 7345 | .name = NULL, /* put in device directory */ |
bb8c093b | 7346 | .attrs = iwl4965_sysfs_entries, |
b481de9c ZY |
7347 | }; |
7348 | ||
bb8c093b CH |
7349 | static struct ieee80211_ops iwl4965_hw_ops = { |
7350 | .tx = iwl4965_mac_tx, | |
7351 | .start = iwl4965_mac_start, | |
7352 | .stop = iwl4965_mac_stop, | |
7353 | .add_interface = iwl4965_mac_add_interface, | |
7354 | .remove_interface = iwl4965_mac_remove_interface, | |
7355 | .config = iwl4965_mac_config, | |
7356 | .config_interface = iwl4965_mac_config_interface, | |
7357 | .configure_filter = iwl4965_configure_filter, | |
7358 | .set_key = iwl4965_mac_set_key, | |
ab885f8c | 7359 | .update_tkip_key = iwl4965_mac_update_tkip_key, |
bb8c093b CH |
7360 | .get_stats = iwl4965_mac_get_stats, |
7361 | .get_tx_stats = iwl4965_mac_get_tx_stats, | |
7362 | .conf_tx = iwl4965_mac_conf_tx, | |
7363 | .get_tsf = iwl4965_mac_get_tsf, | |
7364 | .reset_tsf = iwl4965_mac_reset_tsf, | |
7365 | .beacon_update = iwl4965_mac_beacon_update, | |
471b3efd | 7366 | .bss_info_changed = iwl4965_bss_info_changed, |
c8b0e6e1 | 7367 | #ifdef CONFIG_IWL4965_HT |
9ab46173 | 7368 | .ampdu_action = iwl4965_mac_ampdu_action, |
c8b0e6e1 | 7369 | #endif /* CONFIG_IWL4965_HT */ |
bb8c093b | 7370 | .hw_scan = iwl4965_mac_hw_scan |
b481de9c ZY |
7371 | }; |
7372 | ||
bb8c093b | 7373 | static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
b481de9c ZY |
7374 | { |
7375 | int err = 0; | |
c79dd5b5 | 7376 | struct iwl_priv *priv; |
b481de9c | 7377 | struct ieee80211_hw *hw; |
82b9a121 | 7378 | struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data); |
0359facc | 7379 | unsigned long flags; |
5a66926a | 7380 | DECLARE_MAC_BUF(mac); |
b481de9c | 7381 | |
316c30d9 AK |
7382 | /************************ |
7383 | * 1. Allocating HW data | |
7384 | ************************/ | |
7385 | ||
6440adb5 BC |
7386 | /* Disabling hardware scan means that mac80211 will perform scans |
7387 | * "the hard way", rather than using device's scan. */ | |
1ea87396 | 7388 | if (cfg->mod_params->disable_hw_scan) { |
b481de9c | 7389 | IWL_DEBUG_INFO("Disabling hw_scan\n"); |
bb8c093b | 7390 | iwl4965_hw_ops.hw_scan = NULL; |
b481de9c ZY |
7391 | } |
7392 | ||
1d0a082d AK |
7393 | hw = iwl_alloc_all(cfg, &iwl4965_hw_ops); |
7394 | if (!hw) { | |
b481de9c ZY |
7395 | err = -ENOMEM; |
7396 | goto out; | |
7397 | } | |
1d0a082d AK |
7398 | priv = hw->priv; |
7399 | /* At this point both hw and priv are allocated. */ | |
7400 | ||
b481de9c ZY |
7401 | SET_IEEE80211_DEV(hw, &pdev->dev); |
7402 | ||
7403 | IWL_DEBUG_INFO("*** LOAD DRIVER ***\n"); | |
82b9a121 | 7404 | priv->cfg = cfg; |
b481de9c | 7405 | priv->pci_dev = pdev; |
316c30d9 | 7406 | |
0a6857e7 | 7407 | #ifdef CONFIG_IWLWIFI_DEBUG |
1ea87396 | 7408 | iwl_debug_level = priv->cfg->mod_params->debug; |
b481de9c ZY |
7409 | atomic_set(&priv->restrict_refcnt, 0); |
7410 | #endif | |
b481de9c | 7411 | |
316c30d9 AK |
7412 | /************************** |
7413 | * 2. Initializing PCI bus | |
7414 | **************************/ | |
7415 | if (pci_enable_device(pdev)) { | |
7416 | err = -ENODEV; | |
7417 | goto out_ieee80211_free_hw; | |
7418 | } | |
7419 | ||
7420 | pci_set_master(pdev); | |
7421 | ||
cc2a8ea8 | 7422 | err = pci_set_dma_mask(pdev, DMA_64BIT_MASK); |
316c30d9 | 7423 | if (!err) |
cc2a8ea8 RR |
7424 | err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK); |
7425 | if (err) { | |
7426 | err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); | |
7427 | if (!err) | |
7428 | err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); | |
7429 | /* both attempts failed: */ | |
316c30d9 | 7430 | if (err) { |
cc2a8ea8 RR |
7431 | printk(KERN_WARNING "%s: No suitable DMA available.\n", |
7432 | DRV_NAME); | |
316c30d9 | 7433 | goto out_pci_disable_device; |
cc2a8ea8 | 7434 | } |
316c30d9 AK |
7435 | } |
7436 | ||
7437 | err = pci_request_regions(pdev, DRV_NAME); | |
7438 | if (err) | |
7439 | goto out_pci_disable_device; | |
7440 | ||
7441 | pci_set_drvdata(pdev, priv); | |
7442 | ||
7443 | /* We disable the RETRY_TIMEOUT register (0x41) to keep | |
7444 | * PCI Tx retries from interfering with C3 CPU state */ | |
7445 | pci_write_config_byte(pdev, 0x41, 0x00); | |
7446 | ||
7447 | /*********************** | |
7448 | * 3. Read REV register | |
7449 | ***********************/ | |
7450 | priv->hw_base = pci_iomap(pdev, 0, 0); | |
7451 | if (!priv->hw_base) { | |
7452 | err = -ENODEV; | |
7453 | goto out_pci_release_regions; | |
7454 | } | |
7455 | ||
7456 | IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n", | |
7457 | (unsigned long long) pci_resource_len(pdev, 0)); | |
7458 | IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base); | |
7459 | ||
b661c819 | 7460 | iwl_hw_detect(priv); |
316c30d9 | 7461 | printk(KERN_INFO DRV_NAME |
b661c819 TW |
7462 | ": Detected Intel Wireless WiFi Link %s REV=0x%X\n", |
7463 | priv->cfg->name, priv->hw_rev); | |
316c30d9 | 7464 | |
91238714 TW |
7465 | /* amp init */ |
7466 | err = priv->cfg->ops->lib->apm_ops.init(priv); | |
316c30d9 | 7467 | if (err < 0) { |
91238714 | 7468 | IWL_DEBUG_INFO("Failed to init APMG\n"); |
316c30d9 AK |
7469 | goto out_iounmap; |
7470 | } | |
91238714 TW |
7471 | /***************** |
7472 | * 4. Read EEPROM | |
7473 | *****************/ | |
316c30d9 AK |
7474 | /* Read the EEPROM */ |
7475 | err = iwl_eeprom_init(priv); | |
7476 | if (err) { | |
7477 | IWL_ERROR("Unable to init EEPROM\n"); | |
7478 | goto out_iounmap; | |
7479 | } | |
8614f360 TW |
7480 | err = iwl_eeprom_check_version(priv); |
7481 | if (err) | |
7482 | goto out_iounmap; | |
7483 | ||
316c30d9 AK |
7484 | /* MAC Address location in EEPROM same for 3945/4965 */ |
7485 | iwl_eeprom_get_mac(priv, priv->mac_addr); | |
7486 | IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr)); | |
7487 | SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr); | |
7488 | ||
7489 | /************************ | |
7490 | * 5. Setup HW constants | |
7491 | ************************/ | |
7492 | /* Device-specific setup */ | |
5425e490 TW |
7493 | if (priv->cfg->ops->lib->set_hw_params(priv)) { |
7494 | IWL_ERROR("failed to set hw parameters\n"); | |
073d3f5f | 7495 | goto out_free_eeprom; |
316c30d9 AK |
7496 | } |
7497 | ||
7498 | /******************* | |
7499 | * 6. Setup hw/priv | |
7500 | *******************/ | |
b481de9c | 7501 | |
bf85ea4f AK |
7502 | err = iwl_setup(priv); |
7503 | if (err) | |
399f4900 | 7504 | goto out_free_eeprom; |
bf85ea4f | 7505 | /* At this point both hw and priv are initialized. */ |
316c30d9 AK |
7506 | |
7507 | /********************************** | |
7508 | * 7. Initialize module parameters | |
7509 | **********************************/ | |
7510 | ||
7511 | /* Disable radio (SW RF KILL) via parameter when loading driver */ | |
1ea87396 | 7512 | if (priv->cfg->mod_params->disable) { |
316c30d9 AK |
7513 | set_bit(STATUS_RF_KILL_SW, &priv->status); |
7514 | IWL_DEBUG_INFO("Radio disabled.\n"); | |
7515 | } | |
7516 | ||
1ea87396 | 7517 | if (priv->cfg->mod_params->enable_qos) |
316c30d9 AK |
7518 | priv->qos_data.qos_enable = 1; |
7519 | ||
7520 | /******************** | |
7521 | * 8. Setup services | |
7522 | ********************/ | |
0359facc | 7523 | spin_lock_irqsave(&priv->lock, flags); |
316c30d9 | 7524 | iwl4965_disable_interrupts(priv); |
0359facc | 7525 | spin_unlock_irqrestore(&priv->lock, flags); |
316c30d9 AK |
7526 | |
7527 | err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group); | |
7528 | if (err) { | |
7529 | IWL_ERROR("failed to create sysfs device attributes\n"); | |
399f4900 | 7530 | goto out_free_eeprom; |
316c30d9 AK |
7531 | } |
7532 | ||
7533 | err = iwl_dbgfs_register(priv, DRV_NAME); | |
7534 | if (err) { | |
7535 | IWL_ERROR("failed to create debugfs files\n"); | |
7536 | goto out_remove_sysfs; | |
7537 | } | |
7538 | ||
7539 | iwl4965_setup_deferred_work(priv); | |
7540 | iwl4965_setup_rx_handlers(priv); | |
7541 | ||
7542 | /******************** | |
7543 | * 9. Conclude | |
7544 | ********************/ | |
5a66926a ZY |
7545 | pci_save_state(pdev); |
7546 | pci_disable_device(pdev); | |
b481de9c | 7547 | |
c8381fdc MA |
7548 | /* notify iwlcore to init */ |
7549 | iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT); | |
b481de9c ZY |
7550 | return 0; |
7551 | ||
316c30d9 AK |
7552 | out_remove_sysfs: |
7553 | sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group); | |
073d3f5f TW |
7554 | out_free_eeprom: |
7555 | iwl_eeprom_free(priv); | |
b481de9c ZY |
7556 | out_iounmap: |
7557 | pci_iounmap(pdev, priv->hw_base); | |
7558 | out_pci_release_regions: | |
7559 | pci_release_regions(pdev); | |
316c30d9 | 7560 | pci_set_drvdata(pdev, NULL); |
b481de9c ZY |
7561 | out_pci_disable_device: |
7562 | pci_disable_device(pdev); | |
b481de9c ZY |
7563 | out_ieee80211_free_hw: |
7564 | ieee80211_free_hw(priv->hw); | |
7565 | out: | |
7566 | return err; | |
7567 | } | |
7568 | ||
c83dbf68 | 7569 | static void __devexit iwl4965_pci_remove(struct pci_dev *pdev) |
b481de9c | 7570 | { |
c79dd5b5 | 7571 | struct iwl_priv *priv = pci_get_drvdata(pdev); |
b481de9c ZY |
7572 | struct list_head *p, *q; |
7573 | int i; | |
0359facc | 7574 | unsigned long flags; |
b481de9c ZY |
7575 | |
7576 | if (!priv) | |
7577 | return; | |
7578 | ||
7579 | IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n"); | |
7580 | ||
c4f55232 RR |
7581 | if (priv->mac80211_registered) { |
7582 | ieee80211_unregister_hw(priv->hw); | |
7583 | priv->mac80211_registered = 0; | |
7584 | } | |
7585 | ||
b481de9c | 7586 | set_bit(STATUS_EXIT_PENDING, &priv->status); |
b24d22b1 | 7587 | |
bb8c093b | 7588 | iwl4965_down(priv); |
b481de9c | 7589 | |
0359facc MA |
7590 | /* make sure we flush any pending irq or |
7591 | * tasklet for the driver | |
7592 | */ | |
7593 | spin_lock_irqsave(&priv->lock, flags); | |
7594 | iwl4965_disable_interrupts(priv); | |
7595 | spin_unlock_irqrestore(&priv->lock, flags); | |
7596 | ||
7597 | iwl_synchronize_irq(priv); | |
7598 | ||
b481de9c ZY |
7599 | /* Free MAC hash list for ADHOC */ |
7600 | for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) { | |
7601 | list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) { | |
7602 | list_del(p); | |
bb8c093b | 7603 | kfree(list_entry(p, struct iwl4965_ibss_seq, list)); |
b481de9c ZY |
7604 | } |
7605 | } | |
7606 | ||
c8381fdc | 7607 | iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT); |
712b6cf5 | 7608 | iwl_dbgfs_unregister(priv); |
bb8c093b | 7609 | sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group); |
b481de9c | 7610 | |
bb8c093b | 7611 | iwl4965_dealloc_ucode_pci(priv); |
b481de9c ZY |
7612 | |
7613 | if (priv->rxq.bd) | |
bb8c093b CH |
7614 | iwl4965_rx_queue_free(priv, &priv->rxq); |
7615 | iwl4965_hw_txq_ctx_free(priv); | |
b481de9c | 7616 | |
bf85ea4f | 7617 | iwlcore_clear_stations_table(priv); |
073d3f5f | 7618 | iwl_eeprom_free(priv); |
b481de9c | 7619 | |
b481de9c | 7620 | |
948c171c MA |
7621 | /*netif_stop_queue(dev); */ |
7622 | flush_workqueue(priv->workqueue); | |
7623 | ||
bb8c093b | 7624 | /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes |
b481de9c ZY |
7625 | * priv->workqueue... so we can't take down the workqueue |
7626 | * until now... */ | |
7627 | destroy_workqueue(priv->workqueue); | |
7628 | priv->workqueue = NULL; | |
7629 | ||
b481de9c ZY |
7630 | pci_iounmap(pdev, priv->hw_base); |
7631 | pci_release_regions(pdev); | |
7632 | pci_disable_device(pdev); | |
7633 | pci_set_drvdata(pdev, NULL); | |
7634 | ||
bf85ea4f | 7635 | iwl_free_channel_map(priv); |
849e0dce | 7636 | iwl4965_free_geos(priv); |
b481de9c ZY |
7637 | |
7638 | if (priv->ibss_beacon) | |
7639 | dev_kfree_skb(priv->ibss_beacon); | |
7640 | ||
7641 | ieee80211_free_hw(priv->hw); | |
7642 | } | |
7643 | ||
7644 | #ifdef CONFIG_PM | |
7645 | ||
bb8c093b | 7646 | static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state) |
b481de9c | 7647 | { |
c79dd5b5 | 7648 | struct iwl_priv *priv = pci_get_drvdata(pdev); |
b481de9c | 7649 | |
e655b9f0 ZY |
7650 | if (priv->is_open) { |
7651 | set_bit(STATUS_IN_SUSPEND, &priv->status); | |
7652 | iwl4965_mac_stop(priv->hw); | |
7653 | priv->is_open = 1; | |
7654 | } | |
b481de9c | 7655 | |
b481de9c ZY |
7656 | pci_set_power_state(pdev, PCI_D3hot); |
7657 | ||
b481de9c ZY |
7658 | return 0; |
7659 | } | |
7660 | ||
bb8c093b | 7661 | static int iwl4965_pci_resume(struct pci_dev *pdev) |
b481de9c | 7662 | { |
c79dd5b5 | 7663 | struct iwl_priv *priv = pci_get_drvdata(pdev); |
b481de9c | 7664 | |
b481de9c | 7665 | pci_set_power_state(pdev, PCI_D0); |
b481de9c | 7666 | |
e655b9f0 ZY |
7667 | if (priv->is_open) |
7668 | iwl4965_mac_start(priv->hw); | |
b481de9c | 7669 | |
e655b9f0 | 7670 | clear_bit(STATUS_IN_SUSPEND, &priv->status); |
b481de9c ZY |
7671 | return 0; |
7672 | } | |
7673 | ||
7674 | #endif /* CONFIG_PM */ | |
7675 | ||
7676 | /***************************************************************************** | |
7677 | * | |
7678 | * driver and module entry point | |
7679 | * | |
7680 | *****************************************************************************/ | |
7681 | ||
fed9017e RR |
7682 | /* Hardware specific file defines the PCI IDs table for that hardware module */ |
7683 | static struct pci_device_id iwl_hw_card_ids[] = { | |
7684 | {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)}, | |
7685 | {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)}, | |
7686 | {0} | |
7687 | }; | |
7688 | MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids); | |
7689 | ||
7690 | static struct pci_driver iwl_driver = { | |
b481de9c | 7691 | .name = DRV_NAME, |
fed9017e | 7692 | .id_table = iwl_hw_card_ids, |
bb8c093b CH |
7693 | .probe = iwl4965_pci_probe, |
7694 | .remove = __devexit_p(iwl4965_pci_remove), | |
b481de9c | 7695 | #ifdef CONFIG_PM |
bb8c093b CH |
7696 | .suspend = iwl4965_pci_suspend, |
7697 | .resume = iwl4965_pci_resume, | |
b481de9c ZY |
7698 | #endif |
7699 | }; | |
7700 | ||
bb8c093b | 7701 | static int __init iwl4965_init(void) |
b481de9c ZY |
7702 | { |
7703 | ||
7704 | int ret; | |
7705 | printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n"); | |
7706 | printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n"); | |
897e1cf2 RC |
7707 | |
7708 | ret = iwl4965_rate_control_register(); | |
7709 | if (ret) { | |
7710 | IWL_ERROR("Unable to register rate control algorithm: %d\n", ret); | |
7711 | return ret; | |
7712 | } | |
7713 | ||
fed9017e | 7714 | ret = pci_register_driver(&iwl_driver); |
b481de9c ZY |
7715 | if (ret) { |
7716 | IWL_ERROR("Unable to initialize PCI module\n"); | |
897e1cf2 | 7717 | goto error_register; |
b481de9c | 7718 | } |
0a6857e7 | 7719 | #ifdef CONFIG_IWLWIFI_DEBUG |
fed9017e | 7720 | ret = driver_create_file(&iwl_driver.driver, &driver_attr_debug_level); |
b481de9c ZY |
7721 | if (ret) { |
7722 | IWL_ERROR("Unable to create driver sysfs file\n"); | |
897e1cf2 | 7723 | goto error_debug; |
b481de9c ZY |
7724 | } |
7725 | #endif | |
7726 | ||
7727 | return ret; | |
897e1cf2 RC |
7728 | |
7729 | #ifdef CONFIG_IWLWIFI_DEBUG | |
7730 | error_debug: | |
fed9017e | 7731 | pci_unregister_driver(&iwl_driver); |
897e1cf2 RC |
7732 | #endif |
7733 | error_register: | |
7734 | iwl4965_rate_control_unregister(); | |
7735 | return ret; | |
b481de9c ZY |
7736 | } |
7737 | ||
bb8c093b | 7738 | static void __exit iwl4965_exit(void) |
b481de9c | 7739 | { |
0a6857e7 | 7740 | #ifdef CONFIG_IWLWIFI_DEBUG |
fed9017e | 7741 | driver_remove_file(&iwl_driver.driver, &driver_attr_debug_level); |
b481de9c | 7742 | #endif |
fed9017e | 7743 | pci_unregister_driver(&iwl_driver); |
897e1cf2 | 7744 | iwl4965_rate_control_unregister(); |
b481de9c ZY |
7745 | } |
7746 | ||
bb8c093b CH |
7747 | module_exit(iwl4965_exit); |
7748 | module_init(iwl4965_init); |