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[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / net / wireless / iwlwifi / iwl4965-base.c
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
4 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
25 * James P. Ketrenos <ipw2100-admin@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29
30 #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>
41 #include <linux/etherdevice.h>
42 #include <linux/if_arp.h>
43
44 #include <net/mac80211.h>
45
46 #include <asm/div64.h>
47
48 #include "iwl-eeprom.h"
49 #include "iwl-dev.h"
50 #include "iwl-core.h"
51 #include "iwl-io.h"
52 #include "iwl-helpers.h"
53 #include "iwl-sta.h"
54 #include "iwl-calib.h"
55
56 static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv,
57 struct iwl_tx_queue *txq);
58
59 /******************************************************************************
60 *
61 * module boiler plate
62 *
63 ******************************************************************************/
64
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
72 #ifdef CONFIG_IWLWIFI_DEBUG
73 #define VD "d"
74 #else
75 #define VD
76 #endif
77
78 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
79 #define VS "s"
80 #else
81 #define VS
82 #endif
83
84 #define DRV_VERSION IWLWIFI_VERSION VD VS
85
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
102 static const struct ieee80211_supported_band *iwl_get_hw_mode(
103 struct iwl_priv *priv, enum ieee80211_band band)
104 {
105 return priv->hw->wiphy->bands[band];
106 }
107
108 static int iwl4965_is_empty_essid(const char *essid, int essid_len)
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
124 static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
125 {
126 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
127 const char *s = essid;
128 char *d = escaped;
129
130 if (iwl4965_is_empty_essid(essid, essid_len)) {
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
148
149 /*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
150 * DMA services
151 *
152 * Theory of operation
153 *
154 * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
155 * of buffer descriptors, each of which points to one or more data buffers for
156 * the device to read from or fill. Driver and device exchange status of each
157 * queue via "read" and "write" pointers. Driver keeps minimum of 2 empty
158 * entries in each circular buffer, to protect against confusing empty and full
159 * queue states.
160 *
161 * The device reads or writes the data in the queues via the device's several
162 * DMA/FIFO channels. Each queue is mapped to a single DMA channel.
163 *
164 * For Tx queue, there are low mark and high mark limits. If, after queuing
165 * the packet for Tx, free space become < low mark, Tx queue stopped. When
166 * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
167 * Tx queue resumed.
168 *
169 * The 4965 operates with up to 17 queues: One receive queue, one transmit
170 * queue (#4) for sending commands to the device firmware, and 15 other
171 * Tx queues that may be mapped to prioritized Tx DMA/FIFO channels.
172 *
173 * See more detailed info in iwl-4965-hw.h.
174 ***************************************************/
175
176 int iwl4965_queue_space(const struct iwl4965_queue *q)
177 {
178 int s = q->read_ptr - q->write_ptr;
179
180 if (q->read_ptr > q->write_ptr)
181 s -= q->n_bd;
182
183 if (s <= 0)
184 s += q->n_window;
185 /* keep some reserve to not confuse empty and full situations */
186 s -= 2;
187 if (s < 0)
188 s = 0;
189 return s;
190 }
191
192
193 static inline int x2_queue_used(const struct iwl4965_queue *q, int i)
194 {
195 return q->write_ptr > q->read_ptr ?
196 (i >= q->read_ptr && i < q->write_ptr) :
197 !(i < q->read_ptr && i >= q->write_ptr);
198 }
199
200 static inline u8 get_cmd_index(struct iwl4965_queue *q, u32 index, int is_huge)
201 {
202 /* This is for scan command, the big buffer at end of command array */
203 if (is_huge)
204 return q->n_window; /* must be power of 2 */
205
206 /* Otherwise, use normal size buffers */
207 return index & (q->n_window - 1);
208 }
209
210 const u8 iwl4965_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
211
212 /*************** STATION TABLE MANAGEMENT ****
213 * mac80211 should be examined to determine if sta_info is duplicating
214 * the functionality provided here
215 */
216
217 /**************************************************************/
218
219 #if 0 /* temporary disable till we add real remove station */
220 /**
221 * iwl4965_remove_station - Remove driver's knowledge of station.
222 *
223 * NOTE: This does not remove station from device's station table.
224 */
225 static u8 iwl4965_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
226 {
227 int index = IWL_INVALID_STATION;
228 int i;
229 unsigned long flags;
230
231 spin_lock_irqsave(&priv->sta_lock, flags);
232
233 if (is_ap)
234 index = IWL_AP_ID;
235 else if (is_broadcast_ether_addr(addr))
236 index = priv->hw_params.bcast_sta_id;
237 else
238 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
239 if (priv->stations[i].used &&
240 !compare_ether_addr(priv->stations[i].sta.sta.addr,
241 addr)) {
242 index = i;
243 break;
244 }
245
246 if (unlikely(index == IWL_INVALID_STATION))
247 goto out;
248
249 if (priv->stations[index].used) {
250 priv->stations[index].used = 0;
251 priv->num_stations--;
252 }
253
254 BUG_ON(priv->num_stations < 0);
255
256 out:
257 spin_unlock_irqrestore(&priv->sta_lock, flags);
258 return 0;
259 }
260 #endif
261
262 /**
263 * iwl4965_add_station_flags - Add station to tables in driver and device
264 */
265 u8 iwl4965_add_station_flags(struct iwl_priv *priv, const u8 *addr,
266 int is_ap, u8 flags, void *ht_data)
267 {
268 int i;
269 int index = IWL_INVALID_STATION;
270 struct iwl_station_entry *station;
271 unsigned long flags_spin;
272 DECLARE_MAC_BUF(mac);
273
274 spin_lock_irqsave(&priv->sta_lock, flags_spin);
275 if (is_ap)
276 index = IWL_AP_ID;
277 else if (is_broadcast_ether_addr(addr))
278 index = priv->hw_params.bcast_sta_id;
279 else
280 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
281 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
282 addr)) {
283 index = i;
284 break;
285 }
286
287 if (!priv->stations[i].used &&
288 index == IWL_INVALID_STATION)
289 index = i;
290 }
291
292
293 /* These two conditions have the same outcome, but keep them separate
294 since they have different meanings */
295 if (unlikely(index == IWL_INVALID_STATION)) {
296 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
297 return index;
298 }
299
300 if (priv->stations[index].used &&
301 !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
302 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
303 return index;
304 }
305
306
307 IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
308 station = &priv->stations[index];
309 station->used = 1;
310 priv->num_stations++;
311
312 /* Set up the REPLY_ADD_STA command to send to device */
313 memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd));
314 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
315 station->sta.mode = 0;
316 station->sta.sta.sta_id = index;
317 station->sta.station_flags = 0;
318
319 #ifdef CONFIG_IWL4965_HT
320 /* BCAST station and IBSS stations do not work in HT mode */
321 if (index != priv->hw_params.bcast_sta_id &&
322 priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
323 iwl4965_set_ht_add_station(priv, index,
324 (struct ieee80211_ht_info *) ht_data);
325 #endif /*CONFIG_IWL4965_HT*/
326
327 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
328
329 /* Add station to device's station table */
330 iwl_send_add_sta(priv, &station->sta, flags);
331 return index;
332
333 }
334
335
336
337 /*************** HOST COMMAND QUEUE FUNCTIONS *****/
338
339 /**
340 * iwl4965_enqueue_hcmd - enqueue a uCode command
341 * @priv: device private data point
342 * @cmd: a point to the ucode command structure
343 *
344 * The function returns < 0 values to indicate the operation is
345 * failed. On success, it turns the index (> 0) of command in the
346 * command queue.
347 */
348 int iwl4965_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
349 {
350 struct iwl_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
351 struct iwl4965_queue *q = &txq->q;
352 struct iwl_tfd_frame *tfd;
353 u32 *control_flags;
354 struct iwl_cmd *out_cmd;
355 u32 idx;
356 u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
357 dma_addr_t phys_addr;
358 int ret;
359 unsigned long flags;
360
361 /* If any of the command structures end up being larger than
362 * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
363 * we will need to increase the size of the TFD entries */
364 BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
365 !(cmd->meta.flags & CMD_SIZE_HUGE));
366
367 if (iwl_is_rfkill(priv)) {
368 IWL_DEBUG_INFO("Not sending command - RF KILL");
369 return -EIO;
370 }
371
372 if (iwl4965_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
373 IWL_ERROR("No space for Tx\n");
374 return -ENOSPC;
375 }
376
377 spin_lock_irqsave(&priv->hcmd_lock, flags);
378
379 tfd = &txq->bd[q->write_ptr];
380 memset(tfd, 0, sizeof(*tfd));
381
382 control_flags = (u32 *) tfd;
383
384 idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
385 out_cmd = &txq->cmd[idx];
386
387 out_cmd->hdr.cmd = cmd->id;
388 memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
389 memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
390
391 /* At this point, the out_cmd now has all of the incoming cmd
392 * information */
393
394 out_cmd->hdr.flags = 0;
395 out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
396 INDEX_TO_SEQ(q->write_ptr));
397 if (out_cmd->meta.flags & CMD_SIZE_HUGE)
398 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
399
400 phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
401 offsetof(struct iwl_cmd, hdr);
402 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
403
404 IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
405 "%d bytes at %d[%d]:%d\n",
406 get_cmd_string(out_cmd->hdr.cmd),
407 out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
408 fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
409
410 txq->need_update = 1;
411
412 /* Set up entry in queue's byte count circular buffer */
413 priv->cfg->ops->lib->txq_update_byte_cnt_tbl(priv, txq, 0);
414
415 /* Increment and update queue's write index */
416 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
417 ret = iwl4965_tx_queue_update_write_ptr(priv, txq);
418
419 spin_unlock_irqrestore(&priv->hcmd_lock, flags);
420 return ret ? ret : idx;
421 }
422
423 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
424 {
425 struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
426
427 if (hw_decrypt)
428 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
429 else
430 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
431
432 }
433
434 /**
435 * iwl4965_rxon_add_station - add station into station table.
436 *
437 * there is only one AP station with id= IWL_AP_ID
438 * NOTE: mutex must be held before calling this fnction
439 */
440 static int iwl4965_rxon_add_station(struct iwl_priv *priv,
441 const u8 *addr, int is_ap)
442 {
443 u8 sta_id;
444
445 /* Add station to device's station table */
446 #ifdef CONFIG_IWL4965_HT
447 struct ieee80211_conf *conf = &priv->hw->conf;
448 struct ieee80211_ht_info *cur_ht_config = &conf->ht_conf;
449
450 if ((is_ap) &&
451 (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) &&
452 (priv->iw_mode == IEEE80211_IF_TYPE_STA))
453 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
454 0, cur_ht_config);
455 else
456 #endif /* CONFIG_IWL4965_HT */
457 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
458 0, NULL);
459
460 /* Set up default rate scaling table in device's station table */
461 iwl4965_add_station(priv, addr, is_ap);
462
463 return sta_id;
464 }
465
466 /**
467 * iwl4965_check_rxon_cmd - validate RXON structure is valid
468 *
469 * NOTE: This is really only useful during development and can eventually
470 * be #ifdef'd out once the driver is stable and folks aren't actively
471 * making changes
472 */
473 static int iwl4965_check_rxon_cmd(struct iwl4965_rxon_cmd *rxon)
474 {
475 int error = 0;
476 int counter = 1;
477
478 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
479 error |= le32_to_cpu(rxon->flags &
480 (RXON_FLG_TGJ_NARROW_BAND_MSK |
481 RXON_FLG_RADAR_DETECT_MSK));
482 if (error)
483 IWL_WARNING("check 24G fields %d | %d\n",
484 counter++, error);
485 } else {
486 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
487 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
488 if (error)
489 IWL_WARNING("check 52 fields %d | %d\n",
490 counter++, error);
491 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
492 if (error)
493 IWL_WARNING("check 52 CCK %d | %d\n",
494 counter++, error);
495 }
496 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
497 if (error)
498 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
499
500 /* make sure basic rates 6Mbps and 1Mbps are supported */
501 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
502 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
503 if (error)
504 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
505
506 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
507 if (error)
508 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
509
510 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
511 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
512 if (error)
513 IWL_WARNING("check CCK and short slot %d | %d\n",
514 counter++, error);
515
516 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
517 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
518 if (error)
519 IWL_WARNING("check CCK & auto detect %d | %d\n",
520 counter++, error);
521
522 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
523 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
524 if (error)
525 IWL_WARNING("check TGG and auto detect %d | %d\n",
526 counter++, error);
527
528 if (error)
529 IWL_WARNING("Tuning to channel %d\n",
530 le16_to_cpu(rxon->channel));
531
532 if (error) {
533 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
534 return -1;
535 }
536 return 0;
537 }
538
539 /**
540 * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
541 * @priv: staging_rxon is compared to active_rxon
542 *
543 * If the RXON structure is changing enough to require a new tune,
544 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
545 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
546 */
547 static int iwl4965_full_rxon_required(struct iwl_priv *priv)
548 {
549
550 /* These items are only settable from the full RXON command */
551 if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
552 compare_ether_addr(priv->staging_rxon.bssid_addr,
553 priv->active_rxon.bssid_addr) ||
554 compare_ether_addr(priv->staging_rxon.node_addr,
555 priv->active_rxon.node_addr) ||
556 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
557 priv->active_rxon.wlap_bssid_addr) ||
558 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
559 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
560 (priv->staging_rxon.air_propagation !=
561 priv->active_rxon.air_propagation) ||
562 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
563 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
564 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
565 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
566 (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
567 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
568 return 1;
569
570 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
571 * be updated with the RXON_ASSOC command -- however only some
572 * flag transitions are allowed using RXON_ASSOC */
573
574 /* Check if we are not switching bands */
575 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
576 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
577 return 1;
578
579 /* Check if we are switching association toggle */
580 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
581 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
582 return 1;
583
584 return 0;
585 }
586
587 /**
588 * iwl4965_commit_rxon - commit staging_rxon to hardware
589 *
590 * The RXON command in staging_rxon is committed to the hardware and
591 * the active_rxon structure is updated with the new data. This
592 * function correctly transitions out of the RXON_ASSOC_MSK state if
593 * a HW tune is required based on the RXON structure changes.
594 */
595 static int iwl4965_commit_rxon(struct iwl_priv *priv)
596 {
597 /* cast away the const for active_rxon in this function */
598 struct iwl4965_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
599 DECLARE_MAC_BUF(mac);
600 int rc = 0;
601
602 if (!iwl_is_alive(priv))
603 return -1;
604
605 /* always get timestamp with Rx frame */
606 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
607
608 rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
609 if (rc) {
610 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
611 return -EINVAL;
612 }
613
614 /* If we don't need to send a full RXON, we can use
615 * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
616 * and other flags for the current radio configuration. */
617 if (!iwl4965_full_rxon_required(priv)) {
618 rc = iwl_send_rxon_assoc(priv);
619 if (rc) {
620 IWL_ERROR("Error setting RXON_ASSOC "
621 "configuration (%d).\n", rc);
622 return rc;
623 }
624
625 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
626
627 return 0;
628 }
629
630 /* station table will be cleared */
631 priv->assoc_station_added = 0;
632
633 /* If we are currently associated and the new config requires
634 * an RXON_ASSOC and the new config wants the associated mask enabled,
635 * we must clear the associated from the active configuration
636 * before we apply the new config */
637 if (iwl_is_associated(priv) &&
638 (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
639 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
640 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
641
642 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
643 sizeof(struct iwl4965_rxon_cmd),
644 &priv->active_rxon);
645
646 /* If the mask clearing failed then we set
647 * active_rxon back to what it was previously */
648 if (rc) {
649 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
650 IWL_ERROR("Error clearing ASSOC_MSK on current "
651 "configuration (%d).\n", rc);
652 return rc;
653 }
654 }
655
656 IWL_DEBUG_INFO("Sending RXON\n"
657 "* with%s RXON_FILTER_ASSOC_MSK\n"
658 "* channel = %d\n"
659 "* bssid = %s\n",
660 ((priv->staging_rxon.filter_flags &
661 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
662 le16_to_cpu(priv->staging_rxon.channel),
663 print_mac(mac, priv->staging_rxon.bssid_addr));
664
665 iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
666 /* Apply the new configuration */
667 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
668 sizeof(struct iwl4965_rxon_cmd), &priv->staging_rxon);
669 if (rc) {
670 IWL_ERROR("Error setting new configuration (%d).\n", rc);
671 return rc;
672 }
673
674 iwlcore_clear_stations_table(priv);
675
676 if (!priv->error_recovering)
677 priv->start_calib = 0;
678
679 iwl_init_sensitivity(priv);
680
681 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
682
683 /* If we issue a new RXON command which required a tune then we must
684 * send a new TXPOWER command or we won't be able to Tx any frames */
685 rc = iwl4965_hw_reg_send_txpower(priv);
686 if (rc) {
687 IWL_ERROR("Error setting Tx power (%d).\n", rc);
688 return rc;
689 }
690
691 /* Add the broadcast address so we can send broadcast frames */
692 if (iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0) ==
693 IWL_INVALID_STATION) {
694 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
695 return -EIO;
696 }
697
698 /* If we have set the ASSOC_MSK and we are in BSS mode then
699 * add the IWL_AP_ID to the station rate table */
700 if (iwl_is_associated(priv) &&
701 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
702 if (iwl4965_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
703 == IWL_INVALID_STATION) {
704 IWL_ERROR("Error adding AP address for transmit.\n");
705 return -EIO;
706 }
707 priv->assoc_station_added = 1;
708 if (priv->default_wep_key &&
709 iwl_send_static_wepkey_cmd(priv, 0))
710 IWL_ERROR("Could not send WEP static key.\n");
711 }
712
713 return 0;
714 }
715
716 void iwl4965_update_chain_flags(struct iwl_priv *priv)
717 {
718
719 iwl_set_rxon_chain(priv);
720 iwl4965_commit_rxon(priv);
721 }
722
723 static int iwl4965_send_bt_config(struct iwl_priv *priv)
724 {
725 struct iwl4965_bt_cmd bt_cmd = {
726 .flags = 3,
727 .lead_time = 0xAA,
728 .max_kill = 1,
729 .kill_ack_mask = 0,
730 .kill_cts_mask = 0,
731 };
732
733 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
734 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
735 }
736
737 static int iwl4965_send_scan_abort(struct iwl_priv *priv)
738 {
739 int ret = 0;
740 struct iwl_rx_packet *res;
741 struct iwl_host_cmd cmd = {
742 .id = REPLY_SCAN_ABORT_CMD,
743 .meta.flags = CMD_WANT_SKB,
744 };
745
746 /* If there isn't a scan actively going on in the hardware
747 * then we are in between scan bands and not actually
748 * actively scanning, so don't send the abort command */
749 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
750 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
751 return 0;
752 }
753
754 ret = iwl_send_cmd_sync(priv, &cmd);
755 if (ret) {
756 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
757 return ret;
758 }
759
760 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
761 if (res->u.status != CAN_ABORT_STATUS) {
762 /* The scan abort will return 1 for success or
763 * 2 for "failure". A failure condition can be
764 * due to simply not being in an active scan which
765 * can occur if we send the scan abort before we
766 * the microcode has notified us that a scan is
767 * completed. */
768 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
769 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
770 clear_bit(STATUS_SCAN_HW, &priv->status);
771 }
772
773 dev_kfree_skb_any(cmd.meta.u.skb);
774
775 return ret;
776 }
777
778 /*
779 * CARD_STATE_CMD
780 *
781 * Use: Sets the device's internal card state to enable, disable, or halt
782 *
783 * When in the 'enable' state the card operates as normal.
784 * When in the 'disable' state, the card enters into a low power mode.
785 * When in the 'halt' state, the card is shut down and must be fully
786 * restarted to come back on.
787 */
788 static int iwl4965_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
789 {
790 struct iwl_host_cmd cmd = {
791 .id = REPLY_CARD_STATE_CMD,
792 .len = sizeof(u32),
793 .data = &flags,
794 .meta.flags = meta_flag,
795 };
796
797 return iwl_send_cmd(priv, &cmd);
798 }
799
800 static void iwl4965_clear_free_frames(struct iwl_priv *priv)
801 {
802 struct list_head *element;
803
804 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
805 priv->frames_count);
806
807 while (!list_empty(&priv->free_frames)) {
808 element = priv->free_frames.next;
809 list_del(element);
810 kfree(list_entry(element, struct iwl4965_frame, list));
811 priv->frames_count--;
812 }
813
814 if (priv->frames_count) {
815 IWL_WARNING("%d frames still in use. Did we lose one?\n",
816 priv->frames_count);
817 priv->frames_count = 0;
818 }
819 }
820
821 static struct iwl4965_frame *iwl4965_get_free_frame(struct iwl_priv *priv)
822 {
823 struct iwl4965_frame *frame;
824 struct list_head *element;
825 if (list_empty(&priv->free_frames)) {
826 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
827 if (!frame) {
828 IWL_ERROR("Could not allocate frame!\n");
829 return NULL;
830 }
831
832 priv->frames_count++;
833 return frame;
834 }
835
836 element = priv->free_frames.next;
837 list_del(element);
838 return list_entry(element, struct iwl4965_frame, list);
839 }
840
841 static void iwl4965_free_frame(struct iwl_priv *priv, struct iwl4965_frame *frame)
842 {
843 memset(frame, 0, sizeof(*frame));
844 list_add(&frame->list, &priv->free_frames);
845 }
846
847 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
848 struct ieee80211_hdr *hdr,
849 const u8 *dest, int left)
850 {
851
852 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
853 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
854 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
855 return 0;
856
857 if (priv->ibss_beacon->len > left)
858 return 0;
859
860 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
861
862 return priv->ibss_beacon->len;
863 }
864
865 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
866 {
867 int i;
868 int rate_mask;
869
870 /* Set rate mask*/
871 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
872 rate_mask = priv->active_rate_basic & 0xF;
873 else
874 rate_mask = priv->active_rate_basic & 0xFF0;
875
876 /* Find lowest valid rate */
877 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
878 i = iwl4965_rates[i].next_ieee) {
879 if (rate_mask & (1 << i))
880 return iwl4965_rates[i].plcp;
881 }
882
883 /* No valid rate was found. Assign the lowest one */
884 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
885 return IWL_RATE_1M_PLCP;
886 else
887 return IWL_RATE_6M_PLCP;
888 }
889
890 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
891 {
892 struct iwl4965_frame *frame;
893 unsigned int frame_size;
894 int rc;
895 u8 rate;
896
897 frame = iwl4965_get_free_frame(priv);
898
899 if (!frame) {
900 IWL_ERROR("Could not obtain free frame buffer for beacon "
901 "command.\n");
902 return -ENOMEM;
903 }
904
905 rate = iwl4965_rate_get_lowest_plcp(priv);
906
907 frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
908
909 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
910 &frame->u.cmd[0]);
911
912 iwl4965_free_frame(priv, frame);
913
914 return rc;
915 }
916
917 /******************************************************************************
918 *
919 * Misc. internal state and helper functions
920 *
921 ******************************************************************************/
922
923 /**
924 * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
925 *
926 * return : set the bit for each supported rate insert in ie
927 */
928 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
929 u16 basic_rate, int *left)
930 {
931 u16 ret_rates = 0, bit;
932 int i;
933 u8 *cnt = ie;
934 u8 *rates = ie + 1;
935
936 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
937 if (bit & supported_rate) {
938 ret_rates |= bit;
939 rates[*cnt] = iwl4965_rates[i].ieee |
940 ((bit & basic_rate) ? 0x80 : 0x00);
941 (*cnt)++;
942 (*left)--;
943 if ((*left <= 0) ||
944 (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
945 break;
946 }
947 }
948
949 return ret_rates;
950 }
951
952 #ifdef CONFIG_IWL4965_HT
953 static void iwl4965_ht_conf(struct iwl_priv *priv,
954 struct ieee80211_bss_conf *bss_conf)
955 {
956 struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
957 struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
958 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
959
960 IWL_DEBUG_MAC80211("enter: \n");
961
962 iwl_conf->is_ht = bss_conf->assoc_ht;
963
964 if (!iwl_conf->is_ht)
965 return;
966
967 priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
968
969 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
970 iwl_conf->sgf |= 0x1;
971 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
972 iwl_conf->sgf |= 0x2;
973
974 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
975 iwl_conf->max_amsdu_size =
976 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
977
978 iwl_conf->supported_chan_width =
979 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
980 iwl_conf->extension_chan_offset =
981 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
982 /* If no above or below channel supplied disable FAT channel */
983 if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
984 iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
985 iwl_conf->supported_chan_width = 0;
986
987 iwl_conf->tx_mimo_ps_mode =
988 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
989 memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
990
991 iwl_conf->control_channel = ht_bss_conf->primary_channel;
992 iwl_conf->tx_chan_width =
993 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
994 iwl_conf->ht_protection =
995 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
996 iwl_conf->non_GF_STA_present =
997 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
998
999 IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
1000 IWL_DEBUG_MAC80211("leave\n");
1001 }
1002
1003 static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
1004 u8 *pos, int *left)
1005 {
1006 struct ieee80211_ht_cap *ht_cap;
1007
1008 if (!sband || !sband->ht_info.ht_supported)
1009 return;
1010
1011 if (*left < sizeof(struct ieee80211_ht_cap))
1012 return;
1013
1014 *pos++ = sizeof(struct ieee80211_ht_cap);
1015 ht_cap = (struct ieee80211_ht_cap *) pos;
1016
1017 ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
1018 memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
1019 ht_cap->ampdu_params_info =
1020 (sband->ht_info.ampdu_factor & IEEE80211_HT_CAP_AMPDU_FACTOR) |
1021 ((sband->ht_info.ampdu_density << 2) &
1022 IEEE80211_HT_CAP_AMPDU_DENSITY);
1023 *left -= sizeof(struct ieee80211_ht_cap);
1024 }
1025 #else
1026 static inline void iwl4965_ht_conf(struct iwl_priv *priv,
1027 struct ieee80211_bss_conf *bss_conf)
1028 {
1029 }
1030 static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
1031 u8 *pos, int *left)
1032 {
1033 }
1034 #endif
1035
1036
1037 /**
1038 * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
1039 */
1040 static u16 iwl4965_fill_probe_req(struct iwl_priv *priv,
1041 enum ieee80211_band band,
1042 struct ieee80211_mgmt *frame,
1043 int left, int is_direct)
1044 {
1045 int len = 0;
1046 u8 *pos = NULL;
1047 u16 active_rates, ret_rates, cck_rates, active_rate_basic;
1048 const struct ieee80211_supported_band *sband =
1049 iwl_get_hw_mode(priv, band);
1050
1051 /* Make sure there is enough space for the probe request,
1052 * two mandatory IEs and the data */
1053 left -= 24;
1054 if (left < 0)
1055 return 0;
1056 len += 24;
1057
1058 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1059 memcpy(frame->da, iwl4965_broadcast_addr, ETH_ALEN);
1060 memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1061 memcpy(frame->bssid, iwl4965_broadcast_addr, ETH_ALEN);
1062 frame->seq_ctrl = 0;
1063
1064 /* fill in our indirect SSID IE */
1065 /* ...next IE... */
1066
1067 left -= 2;
1068 if (left < 0)
1069 return 0;
1070 len += 2;
1071 pos = &(frame->u.probe_req.variable[0]);
1072 *pos++ = WLAN_EID_SSID;
1073 *pos++ = 0;
1074
1075 /* fill in our direct SSID IE... */
1076 if (is_direct) {
1077 /* ...next IE... */
1078 left -= 2 + priv->essid_len;
1079 if (left < 0)
1080 return 0;
1081 /* ... fill it in... */
1082 *pos++ = WLAN_EID_SSID;
1083 *pos++ = priv->essid_len;
1084 memcpy(pos, priv->essid, priv->essid_len);
1085 pos += priv->essid_len;
1086 len += 2 + priv->essid_len;
1087 }
1088
1089 /* fill in supported rate */
1090 /* ...next IE... */
1091 left -= 2;
1092 if (left < 0)
1093 return 0;
1094
1095 /* ... fill it in... */
1096 *pos++ = WLAN_EID_SUPP_RATES;
1097 *pos = 0;
1098
1099 /* exclude 60M rate */
1100 active_rates = priv->rates_mask;
1101 active_rates &= ~IWL_RATE_60M_MASK;
1102
1103 active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
1104
1105 cck_rates = IWL_CCK_RATES_MASK & active_rates;
1106 ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
1107 active_rate_basic, &left);
1108 active_rates &= ~ret_rates;
1109
1110 ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
1111 active_rate_basic, &left);
1112 active_rates &= ~ret_rates;
1113
1114 len += 2 + *pos;
1115 pos += (*pos) + 1;
1116 if (active_rates == 0)
1117 goto fill_end;
1118
1119 /* fill in supported extended rate */
1120 /* ...next IE... */
1121 left -= 2;
1122 if (left < 0)
1123 return 0;
1124 /* ... fill it in... */
1125 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1126 *pos = 0;
1127 iwl4965_supported_rate_to_ie(pos, active_rates,
1128 active_rate_basic, &left);
1129 if (*pos > 0)
1130 len += 2 + *pos;
1131
1132 fill_end:
1133 /* fill in HT IE */
1134 left -= 2;
1135 if (left < 0)
1136 return 0;
1137
1138 *pos++ = WLAN_EID_HT_CAPABILITY;
1139 *pos = 0;
1140
1141 iwl_ht_cap_to_ie(sband, pos, &left);
1142
1143 if (*pos > 0)
1144 len += 2 + *pos;
1145 return (u16)len;
1146 }
1147
1148 /*
1149 * QoS support
1150 */
1151 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
1152 struct iwl4965_qosparam_cmd *qos)
1153 {
1154
1155 return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1156 sizeof(struct iwl4965_qosparam_cmd), qos);
1157 }
1158
1159 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
1160 {
1161 unsigned long flags;
1162
1163 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1164 return;
1165
1166 if (!priv->qos_data.qos_enable)
1167 return;
1168
1169 spin_lock_irqsave(&priv->lock, flags);
1170 priv->qos_data.def_qos_parm.qos_flags = 0;
1171
1172 if (priv->qos_data.qos_cap.q_AP.queue_request &&
1173 !priv->qos_data.qos_cap.q_AP.txop_request)
1174 priv->qos_data.def_qos_parm.qos_flags |=
1175 QOS_PARAM_FLG_TXOP_TYPE_MSK;
1176 if (priv->qos_data.qos_active)
1177 priv->qos_data.def_qos_parm.qos_flags |=
1178 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1179
1180 #ifdef CONFIG_IWL4965_HT
1181 if (priv->current_ht_config.is_ht)
1182 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
1183 #endif /* CONFIG_IWL4965_HT */
1184
1185 spin_unlock_irqrestore(&priv->lock, flags);
1186
1187 if (force || iwl_is_associated(priv)) {
1188 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
1189 priv->qos_data.qos_active,
1190 priv->qos_data.def_qos_parm.qos_flags);
1191
1192 iwl4965_send_qos_params_command(priv,
1193 &(priv->qos_data.def_qos_parm));
1194 }
1195 }
1196
1197 int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
1198 {
1199 /* Filter incoming packets to determine if they are targeted toward
1200 * this network, discarding packets coming from ourselves */
1201 switch (priv->iw_mode) {
1202 case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
1203 /* packets from our adapter are dropped (echo) */
1204 if (!compare_ether_addr(header->addr2, priv->mac_addr))
1205 return 0;
1206 /* {broad,multi}cast packets to our IBSS go through */
1207 if (is_multicast_ether_addr(header->addr1))
1208 return !compare_ether_addr(header->addr3, priv->bssid);
1209 /* packets to our adapter go through */
1210 return !compare_ether_addr(header->addr1, priv->mac_addr);
1211 case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
1212 /* packets from our adapter are dropped (echo) */
1213 if (!compare_ether_addr(header->addr3, priv->mac_addr))
1214 return 0;
1215 /* {broad,multi}cast packets to our BSS go through */
1216 if (is_multicast_ether_addr(header->addr1))
1217 return !compare_ether_addr(header->addr2, priv->bssid);
1218 /* packets to our adapter go through */
1219 return !compare_ether_addr(header->addr1, priv->mac_addr);
1220 default:
1221 break;
1222 }
1223
1224 return 1;
1225 }
1226
1227 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1228
1229 static const char *iwl4965_get_tx_fail_reason(u32 status)
1230 {
1231 switch (status & TX_STATUS_MSK) {
1232 case TX_STATUS_SUCCESS:
1233 return "SUCCESS";
1234 TX_STATUS_ENTRY(SHORT_LIMIT);
1235 TX_STATUS_ENTRY(LONG_LIMIT);
1236 TX_STATUS_ENTRY(FIFO_UNDERRUN);
1237 TX_STATUS_ENTRY(MGMNT_ABORT);
1238 TX_STATUS_ENTRY(NEXT_FRAG);
1239 TX_STATUS_ENTRY(LIFE_EXPIRE);
1240 TX_STATUS_ENTRY(DEST_PS);
1241 TX_STATUS_ENTRY(ABORTED);
1242 TX_STATUS_ENTRY(BT_RETRY);
1243 TX_STATUS_ENTRY(STA_INVALID);
1244 TX_STATUS_ENTRY(FRAG_DROPPED);
1245 TX_STATUS_ENTRY(TID_DISABLE);
1246 TX_STATUS_ENTRY(FRAME_FLUSHED);
1247 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
1248 TX_STATUS_ENTRY(TX_LOCKED);
1249 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
1250 }
1251
1252 return "UNKNOWN";
1253 }
1254
1255 /**
1256 * iwl4965_scan_cancel - Cancel any currently executing HW scan
1257 *
1258 * NOTE: priv->mutex is not required before calling this function
1259 */
1260 static int iwl4965_scan_cancel(struct iwl_priv *priv)
1261 {
1262 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1263 clear_bit(STATUS_SCANNING, &priv->status);
1264 return 0;
1265 }
1266
1267 if (test_bit(STATUS_SCANNING, &priv->status)) {
1268 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1269 IWL_DEBUG_SCAN("Queuing scan abort.\n");
1270 set_bit(STATUS_SCAN_ABORTING, &priv->status);
1271 queue_work(priv->workqueue, &priv->abort_scan);
1272
1273 } else
1274 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
1275
1276 return test_bit(STATUS_SCANNING, &priv->status);
1277 }
1278
1279 return 0;
1280 }
1281
1282 /**
1283 * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
1284 * @ms: amount of time to wait (in milliseconds) for scan to abort
1285 *
1286 * NOTE: priv->mutex must be held before calling this function
1287 */
1288 static int iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
1289 {
1290 unsigned long now = jiffies;
1291 int ret;
1292
1293 ret = iwl4965_scan_cancel(priv);
1294 if (ret && ms) {
1295 mutex_unlock(&priv->mutex);
1296 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
1297 test_bit(STATUS_SCANNING, &priv->status))
1298 msleep(1);
1299 mutex_lock(&priv->mutex);
1300
1301 return test_bit(STATUS_SCANNING, &priv->status);
1302 }
1303
1304 return ret;
1305 }
1306
1307 static void iwl4965_sequence_reset(struct iwl_priv *priv)
1308 {
1309 /* Reset ieee stats */
1310
1311 /* We don't reset the net_device_stats (ieee->stats) on
1312 * re-association */
1313
1314 priv->last_seq_num = -1;
1315 priv->last_frag_num = -1;
1316 priv->last_packet_time = 0;
1317
1318 iwl4965_scan_cancel(priv);
1319 }
1320
1321 #define MAX_UCODE_BEACON_INTERVAL 4096
1322 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
1323
1324 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
1325 {
1326 u16 new_val = 0;
1327 u16 beacon_factor = 0;
1328
1329 beacon_factor =
1330 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
1331 / MAX_UCODE_BEACON_INTERVAL;
1332 new_val = beacon_val / beacon_factor;
1333
1334 return cpu_to_le16(new_val);
1335 }
1336
1337 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
1338 {
1339 u64 interval_tm_unit;
1340 u64 tsf, result;
1341 unsigned long flags;
1342 struct ieee80211_conf *conf = NULL;
1343 u16 beacon_int = 0;
1344
1345 conf = ieee80211_get_hw_conf(priv->hw);
1346
1347 spin_lock_irqsave(&priv->lock, flags);
1348 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
1349 priv->rxon_timing.timestamp.dw[0] =
1350 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
1351
1352 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1353
1354 tsf = priv->timestamp;
1355
1356 beacon_int = priv->beacon_int;
1357 spin_unlock_irqrestore(&priv->lock, flags);
1358
1359 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
1360 if (beacon_int == 0) {
1361 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1362 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1363 } else {
1364 priv->rxon_timing.beacon_interval =
1365 cpu_to_le16(beacon_int);
1366 priv->rxon_timing.beacon_interval =
1367 iwl4965_adjust_beacon_interval(
1368 le16_to_cpu(priv->rxon_timing.beacon_interval));
1369 }
1370
1371 priv->rxon_timing.atim_window = 0;
1372 } else {
1373 priv->rxon_timing.beacon_interval =
1374 iwl4965_adjust_beacon_interval(conf->beacon_int);
1375 /* TODO: we need to get atim_window from upper stack
1376 * for now we set to 0 */
1377 priv->rxon_timing.atim_window = 0;
1378 }
1379
1380 interval_tm_unit =
1381 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
1382 result = do_div(tsf, interval_tm_unit);
1383 priv->rxon_timing.beacon_init_val =
1384 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
1385
1386 IWL_DEBUG_ASSOC
1387 ("beacon interval %d beacon timer %d beacon tim %d\n",
1388 le16_to_cpu(priv->rxon_timing.beacon_interval),
1389 le32_to_cpu(priv->rxon_timing.beacon_init_val),
1390 le16_to_cpu(priv->rxon_timing.atim_window));
1391 }
1392
1393 static int iwl4965_scan_initiate(struct iwl_priv *priv)
1394 {
1395 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1396 IWL_ERROR("APs don't scan.\n");
1397 return 0;
1398 }
1399
1400 if (!iwl_is_ready_rf(priv)) {
1401 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1402 return -EIO;
1403 }
1404
1405 if (test_bit(STATUS_SCANNING, &priv->status)) {
1406 IWL_DEBUG_SCAN("Scan already in progress.\n");
1407 return -EAGAIN;
1408 }
1409
1410 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1411 IWL_DEBUG_SCAN("Scan request while abort pending. "
1412 "Queuing.\n");
1413 return -EAGAIN;
1414 }
1415
1416 IWL_DEBUG_INFO("Starting scan...\n");
1417 priv->scan_bands = 2;
1418 set_bit(STATUS_SCANNING, &priv->status);
1419 priv->scan_start = jiffies;
1420 priv->scan_pass_start = priv->scan_start;
1421
1422 queue_work(priv->workqueue, &priv->request_scan);
1423
1424 return 0;
1425 }
1426
1427
1428 static void iwl4965_set_flags_for_phymode(struct iwl_priv *priv,
1429 enum ieee80211_band band)
1430 {
1431 if (band == IEEE80211_BAND_5GHZ) {
1432 priv->staging_rxon.flags &=
1433 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1434 | RXON_FLG_CCK_MSK);
1435 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1436 } else {
1437 /* Copied from iwl4965_post_associate() */
1438 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1439 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1440 else
1441 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1442
1443 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
1444 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1445
1446 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1447 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1448 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1449 }
1450 }
1451
1452 /*
1453 * initialize rxon structure with default values from eeprom
1454 */
1455 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
1456 {
1457 const struct iwl_channel_info *ch_info;
1458
1459 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1460
1461 switch (priv->iw_mode) {
1462 case IEEE80211_IF_TYPE_AP:
1463 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1464 break;
1465
1466 case IEEE80211_IF_TYPE_STA:
1467 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1468 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1469 break;
1470
1471 case IEEE80211_IF_TYPE_IBSS:
1472 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1473 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1474 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1475 RXON_FILTER_ACCEPT_GRP_MSK;
1476 break;
1477
1478 case IEEE80211_IF_TYPE_MNTR:
1479 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
1480 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
1481 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
1482 break;
1483 default:
1484 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
1485 break;
1486 }
1487
1488 #if 0
1489 /* TODO: Figure out when short_preamble would be set and cache from
1490 * that */
1491 if (!hw_to_local(priv->hw)->short_preamble)
1492 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1493 else
1494 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1495 #endif
1496
1497 ch_info = iwl_get_channel_info(priv, priv->band,
1498 le16_to_cpu(priv->staging_rxon.channel));
1499
1500 if (!ch_info)
1501 ch_info = &priv->channel_info[0];
1502
1503 /*
1504 * in some case A channels are all non IBSS
1505 * in this case force B/G channel
1506 */
1507 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
1508 !(is_channel_ibss(ch_info)))
1509 ch_info = &priv->channel_info[0];
1510
1511 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1512 priv->band = ch_info->band;
1513
1514 iwl4965_set_flags_for_phymode(priv, priv->band);
1515
1516 priv->staging_rxon.ofdm_basic_rates =
1517 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1518 priv->staging_rxon.cck_basic_rates =
1519 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1520
1521 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
1522 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
1523 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1524 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1525 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1526 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1527 iwl_set_rxon_chain(priv);
1528 }
1529
1530 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
1531 {
1532 if (mode == IEEE80211_IF_TYPE_IBSS) {
1533 const struct iwl_channel_info *ch_info;
1534
1535 ch_info = iwl_get_channel_info(priv,
1536 priv->band,
1537 le16_to_cpu(priv->staging_rxon.channel));
1538
1539 if (!ch_info || !is_channel_ibss(ch_info)) {
1540 IWL_ERROR("channel %d not IBSS channel\n",
1541 le16_to_cpu(priv->staging_rxon.channel));
1542 return -EINVAL;
1543 }
1544 }
1545
1546 priv->iw_mode = mode;
1547
1548 iwl4965_connection_init_rx_config(priv);
1549 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1550
1551 iwlcore_clear_stations_table(priv);
1552
1553 /* dont commit rxon if rf-kill is on*/
1554 if (!iwl_is_ready_rf(priv))
1555 return -EAGAIN;
1556
1557 cancel_delayed_work(&priv->scan_check);
1558 if (iwl4965_scan_cancel_timeout(priv, 100)) {
1559 IWL_WARNING("Aborted scan still in progress after 100ms\n");
1560 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
1561 return -EAGAIN;
1562 }
1563
1564 iwl4965_commit_rxon(priv);
1565
1566 return 0;
1567 }
1568
1569 static void iwl4965_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
1570 struct ieee80211_tx_control *ctl,
1571 struct iwl_cmd *cmd,
1572 struct sk_buff *skb_frag,
1573 int sta_id)
1574 {
1575 struct iwl_hw_key *keyinfo = &priv->stations[sta_id].keyinfo;
1576 struct iwl_wep_key *wepkey;
1577 int keyidx = 0;
1578
1579 BUG_ON(ctl->hw_key->hw_key_idx > 3);
1580
1581 switch (keyinfo->alg) {
1582 case ALG_CCMP:
1583 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
1584 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
1585 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
1586 cmd->cmd.tx.tx_flags |= TX_CMD_FLG_AGG_CCMP_MSK;
1587 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
1588 break;
1589
1590 case ALG_TKIP:
1591 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
1592 ieee80211_get_tkip_key(keyinfo->conf, skb_frag,
1593 IEEE80211_TKIP_P2_KEY, cmd->cmd.tx.key);
1594 IWL_DEBUG_TX("tx_cmd with tkip hwcrypto\n");
1595 break;
1596
1597 case ALG_WEP:
1598 wepkey = &priv->wep_keys[ctl->hw_key->hw_key_idx];
1599 cmd->cmd.tx.sec_ctl = 0;
1600 if (priv->default_wep_key) {
1601 /* the WEP key was sent as static */
1602 keyidx = ctl->hw_key->hw_key_idx;
1603 memcpy(&cmd->cmd.tx.key[3], wepkey->key,
1604 wepkey->key_size);
1605 if (wepkey->key_size == WEP_KEY_LEN_128)
1606 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
1607 } else {
1608 /* the WEP key was sent as dynamic */
1609 keyidx = keyinfo->keyidx;
1610 memcpy(&cmd->cmd.tx.key[3], keyinfo->key,
1611 keyinfo->keylen);
1612 if (keyinfo->keylen == WEP_KEY_LEN_128)
1613 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
1614 }
1615
1616 cmd->cmd.tx.sec_ctl |= (TX_CMD_SEC_WEP |
1617 (keyidx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT);
1618
1619 IWL_DEBUG_TX("Configuring packet for WEP encryption "
1620 "with key %d\n", keyidx);
1621 break;
1622
1623 default:
1624 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
1625 break;
1626 }
1627 }
1628
1629 /*
1630 * handle build REPLY_TX command notification.
1631 */
1632 static void iwl4965_build_tx_cmd_basic(struct iwl_priv *priv,
1633 struct iwl_cmd *cmd,
1634 struct ieee80211_tx_control *ctrl,
1635 struct ieee80211_hdr *hdr,
1636 int is_unicast, u8 std_id)
1637 {
1638 __le16 *qc;
1639 u16 fc = le16_to_cpu(hdr->frame_control);
1640 __le32 tx_flags = cmd->cmd.tx.tx_flags;
1641
1642 cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
1643 if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
1644 tx_flags |= TX_CMD_FLG_ACK_MSK;
1645 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
1646 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
1647 if (ieee80211_is_probe_response(fc) &&
1648 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
1649 tx_flags |= TX_CMD_FLG_TSF_MSK;
1650 } else {
1651 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
1652 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
1653 }
1654
1655 if (ieee80211_is_back_request(fc))
1656 tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK;
1657
1658
1659 cmd->cmd.tx.sta_id = std_id;
1660 if (ieee80211_get_morefrag(hdr))
1661 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
1662
1663 qc = ieee80211_get_qos_ctrl(hdr);
1664 if (qc) {
1665 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
1666 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
1667 } else
1668 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
1669
1670 if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
1671 tx_flags |= TX_CMD_FLG_RTS_MSK;
1672 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
1673 } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
1674 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
1675 tx_flags |= TX_CMD_FLG_CTS_MSK;
1676 }
1677
1678 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
1679 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
1680
1681 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
1682 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
1683 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
1684 (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
1685 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
1686 else
1687 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
1688 } else {
1689 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
1690 }
1691
1692 cmd->cmd.tx.driver_txop = 0;
1693 cmd->cmd.tx.tx_flags = tx_flags;
1694 cmd->cmd.tx.next_frame_len = 0;
1695 }
1696 static void iwl_update_tx_stats(struct iwl_priv *priv, u16 fc, u16 len)
1697 {
1698 /* 0 - mgmt, 1 - cnt, 2 - data */
1699 int idx = (fc & IEEE80211_FCTL_FTYPE) >> 2;
1700 priv->tx_stats[idx].cnt++;
1701 priv->tx_stats[idx].bytes += len;
1702 }
1703 /**
1704 * iwl4965_get_sta_id - Find station's index within station table
1705 *
1706 * If new IBSS station, create new entry in station table
1707 */
1708 static int iwl4965_get_sta_id(struct iwl_priv *priv,
1709 struct ieee80211_hdr *hdr)
1710 {
1711 int sta_id;
1712 u16 fc = le16_to_cpu(hdr->frame_control);
1713 DECLARE_MAC_BUF(mac);
1714
1715 /* If this frame is broadcast or management, use broadcast station id */
1716 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
1717 is_multicast_ether_addr(hdr->addr1))
1718 return priv->hw_params.bcast_sta_id;
1719
1720 switch (priv->iw_mode) {
1721
1722 /* If we are a client station in a BSS network, use the special
1723 * AP station entry (that's the only station we communicate with) */
1724 case IEEE80211_IF_TYPE_STA:
1725 return IWL_AP_ID;
1726
1727 /* If we are an AP, then find the station, or use BCAST */
1728 case IEEE80211_IF_TYPE_AP:
1729 sta_id = iwl_find_station(priv, hdr->addr1);
1730 if (sta_id != IWL_INVALID_STATION)
1731 return sta_id;
1732 return priv->hw_params.bcast_sta_id;
1733
1734 /* If this frame is going out to an IBSS network, find the station,
1735 * or create a new station table entry */
1736 case IEEE80211_IF_TYPE_IBSS:
1737 sta_id = iwl_find_station(priv, hdr->addr1);
1738 if (sta_id != IWL_INVALID_STATION)
1739 return sta_id;
1740
1741 /* Create new station table entry */
1742 sta_id = iwl4965_add_station_flags(priv, hdr->addr1,
1743 0, CMD_ASYNC, NULL);
1744
1745 if (sta_id != IWL_INVALID_STATION)
1746 return sta_id;
1747
1748 IWL_DEBUG_DROP("Station %s not in station map. "
1749 "Defaulting to broadcast...\n",
1750 print_mac(mac, hdr->addr1));
1751 iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
1752 return priv->hw_params.bcast_sta_id;
1753
1754 default:
1755 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
1756 return priv->hw_params.bcast_sta_id;
1757 }
1758 }
1759
1760 /*
1761 * start REPLY_TX command process
1762 */
1763 static int iwl4965_tx_skb(struct iwl_priv *priv,
1764 struct sk_buff *skb, struct ieee80211_tx_control *ctl)
1765 {
1766 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1767 struct iwl_tfd_frame *tfd;
1768 u32 *control_flags;
1769 int txq_id = ctl->queue;
1770 struct iwl_tx_queue *txq = NULL;
1771 struct iwl4965_queue *q = NULL;
1772 dma_addr_t phys_addr;
1773 dma_addr_t txcmd_phys;
1774 dma_addr_t scratch_phys;
1775 struct iwl_cmd *out_cmd = NULL;
1776 u16 len, idx, len_org;
1777 u8 id, hdr_len, unicast;
1778 u8 sta_id;
1779 u16 seq_number = 0;
1780 u16 fc;
1781 __le16 *qc;
1782 u8 wait_write_ptr = 0;
1783 unsigned long flags;
1784 int rc;
1785
1786 spin_lock_irqsave(&priv->lock, flags);
1787 if (iwl_is_rfkill(priv)) {
1788 IWL_DEBUG_DROP("Dropping - RF KILL\n");
1789 goto drop_unlock;
1790 }
1791
1792 if (!priv->vif) {
1793 IWL_DEBUG_DROP("Dropping - !priv->vif\n");
1794 goto drop_unlock;
1795 }
1796
1797 if ((ctl->tx_rate->hw_value & 0xFF) == IWL_INVALID_RATE) {
1798 IWL_ERROR("ERROR: No TX rate available.\n");
1799 goto drop_unlock;
1800 }
1801
1802 unicast = !is_multicast_ether_addr(hdr->addr1);
1803 id = 0;
1804
1805 fc = le16_to_cpu(hdr->frame_control);
1806
1807 #ifdef CONFIG_IWLWIFI_DEBUG
1808 if (ieee80211_is_auth(fc))
1809 IWL_DEBUG_TX("Sending AUTH frame\n");
1810 else if (ieee80211_is_assoc_request(fc))
1811 IWL_DEBUG_TX("Sending ASSOC frame\n");
1812 else if (ieee80211_is_reassoc_request(fc))
1813 IWL_DEBUG_TX("Sending REASSOC frame\n");
1814 #endif
1815
1816 /* drop all data frame if we are not associated */
1817 if (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
1818 (!iwl_is_associated(priv) ||
1819 ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id) ||
1820 !priv->assoc_station_added)) {
1821 IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n");
1822 goto drop_unlock;
1823 }
1824
1825 spin_unlock_irqrestore(&priv->lock, flags);
1826
1827 hdr_len = ieee80211_get_hdrlen(fc);
1828
1829 /* Find (or create) index into station table for destination station */
1830 sta_id = iwl4965_get_sta_id(priv, hdr);
1831 if (sta_id == IWL_INVALID_STATION) {
1832 DECLARE_MAC_BUF(mac);
1833
1834 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
1835 print_mac(mac, hdr->addr1));
1836 goto drop;
1837 }
1838
1839 IWL_DEBUG_TX("station Id %d\n", sta_id);
1840
1841 qc = ieee80211_get_qos_ctrl(hdr);
1842 if (qc) {
1843 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
1844 seq_number = priv->stations[sta_id].tid[tid].seq_number &
1845 IEEE80211_SCTL_SEQ;
1846 hdr->seq_ctrl = cpu_to_le16(seq_number) |
1847 (hdr->seq_ctrl &
1848 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
1849 seq_number += 0x10;
1850 #ifdef CONFIG_IWL4965_HT
1851 /* aggregation is on for this <sta,tid> */
1852 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
1853 txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
1854 priv->stations[sta_id].tid[tid].tfds_in_queue++;
1855 #endif /* CONFIG_IWL4965_HT */
1856 }
1857
1858 /* Descriptor for chosen Tx queue */
1859 txq = &priv->txq[txq_id];
1860 q = &txq->q;
1861
1862 spin_lock_irqsave(&priv->lock, flags);
1863
1864 /* Set up first empty TFD within this queue's circular TFD buffer */
1865 tfd = &txq->bd[q->write_ptr];
1866 memset(tfd, 0, sizeof(*tfd));
1867 control_flags = (u32 *) tfd;
1868 idx = get_cmd_index(q, q->write_ptr, 0);
1869
1870 /* Set up driver data for this TFD */
1871 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info));
1872 txq->txb[q->write_ptr].skb[0] = skb;
1873 memcpy(&(txq->txb[q->write_ptr].status.control),
1874 ctl, sizeof(struct ieee80211_tx_control));
1875
1876 /* Set up first empty entry in queue's array of Tx/cmd buffers */
1877 out_cmd = &txq->cmd[idx];
1878 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
1879 memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
1880
1881 /*
1882 * Set up the Tx-command (not MAC!) header.
1883 * Store the chosen Tx queue and TFD index within the sequence field;
1884 * after Tx, uCode's Tx response will return this value so driver can
1885 * locate the frame within the tx queue and do post-tx processing.
1886 */
1887 out_cmd->hdr.cmd = REPLY_TX;
1888 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
1889 INDEX_TO_SEQ(q->write_ptr)));
1890
1891 /* Copy MAC header from skb into command buffer */
1892 memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
1893
1894 /*
1895 * Use the first empty entry in this queue's command buffer array
1896 * to contain the Tx command and MAC header concatenated together
1897 * (payload data will be in another buffer).
1898 * Size of this varies, due to varying MAC header length.
1899 * If end is not dword aligned, we'll have 2 extra bytes at the end
1900 * of the MAC header (device reads on dword boundaries).
1901 * We'll tell device about this padding later.
1902 */
1903 len = priv->hw_params.tx_cmd_len +
1904 sizeof(struct iwl_cmd_header) + hdr_len;
1905
1906 len_org = len;
1907 len = (len + 3) & ~3;
1908
1909 if (len_org != len)
1910 len_org = 1;
1911 else
1912 len_org = 0;
1913
1914 /* Physical address of this Tx command's header (not MAC header!),
1915 * within command buffer array. */
1916 txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl_cmd) * idx +
1917 offsetof(struct iwl_cmd, hdr);
1918
1919 /* Add buffer containing Tx command and MAC(!) header to TFD's
1920 * first entry */
1921 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
1922
1923 if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
1924 iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, sta_id);
1925
1926 /* Set up TFD's 2nd entry to point directly to remainder of skb,
1927 * if any (802.11 null frames have no payload). */
1928 len = skb->len - hdr_len;
1929 if (len) {
1930 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
1931 len, PCI_DMA_TODEVICE);
1932 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
1933 }
1934
1935 /* Tell 4965 about any 2-byte padding after MAC header */
1936 if (len_org)
1937 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
1938
1939 /* Total # bytes to be transmitted */
1940 len = (u16)skb->len;
1941 out_cmd->cmd.tx.len = cpu_to_le16(len);
1942
1943 /* TODO need this for burst mode later on */
1944 iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
1945
1946 /* set is_hcca to 0; it probably will never be implemented */
1947 iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
1948
1949 iwl_update_tx_stats(priv, fc, len);
1950
1951 scratch_phys = txcmd_phys + sizeof(struct iwl_cmd_header) +
1952 offsetof(struct iwl4965_tx_cmd, scratch);
1953 out_cmd->cmd.tx.dram_lsb_ptr = cpu_to_le32(scratch_phys);
1954 out_cmd->cmd.tx.dram_msb_ptr = iwl_get_dma_hi_address(scratch_phys);
1955
1956 if (!ieee80211_get_morefrag(hdr)) {
1957 txq->need_update = 1;
1958 if (qc) {
1959 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
1960 priv->stations[sta_id].tid[tid].seq_number = seq_number;
1961 }
1962 } else {
1963 wait_write_ptr = 1;
1964 txq->need_update = 0;
1965 }
1966
1967 iwl_print_hex_dump(priv, IWL_DL_TX, out_cmd->cmd.payload,
1968 sizeof(out_cmd->cmd.tx));
1969
1970 iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
1971 ieee80211_get_hdrlen(fc));
1972
1973 /* Set up entry for this TFD in Tx byte-count array */
1974 priv->cfg->ops->lib->txq_update_byte_cnt_tbl(priv, txq, len);
1975
1976 /* Tell device the write index *just past* this latest filled TFD */
1977 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
1978 rc = iwl4965_tx_queue_update_write_ptr(priv, txq);
1979 spin_unlock_irqrestore(&priv->lock, flags);
1980
1981 if (rc)
1982 return rc;
1983
1984 if ((iwl4965_queue_space(q) < q->high_mark)
1985 && priv->mac80211_registered) {
1986 if (wait_write_ptr) {
1987 spin_lock_irqsave(&priv->lock, flags);
1988 txq->need_update = 1;
1989 iwl4965_tx_queue_update_write_ptr(priv, txq);
1990 spin_unlock_irqrestore(&priv->lock, flags);
1991 }
1992
1993 ieee80211_stop_queue(priv->hw, ctl->queue);
1994 }
1995
1996 return 0;
1997
1998 drop_unlock:
1999 spin_unlock_irqrestore(&priv->lock, flags);
2000 drop:
2001 return -1;
2002 }
2003
2004 static void iwl4965_set_rate(struct iwl_priv *priv)
2005 {
2006 const struct ieee80211_supported_band *hw = NULL;
2007 struct ieee80211_rate *rate;
2008 int i;
2009
2010 hw = iwl_get_hw_mode(priv, priv->band);
2011 if (!hw) {
2012 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2013 return;
2014 }
2015
2016 priv->active_rate = 0;
2017 priv->active_rate_basic = 0;
2018
2019 for (i = 0; i < hw->n_bitrates; i++) {
2020 rate = &(hw->bitrates[i]);
2021 if (rate->hw_value < IWL_RATE_COUNT)
2022 priv->active_rate |= (1 << rate->hw_value);
2023 }
2024
2025 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2026 priv->active_rate, priv->active_rate_basic);
2027
2028 /*
2029 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2030 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2031 * OFDM
2032 */
2033 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2034 priv->staging_rxon.cck_basic_rates =
2035 ((priv->active_rate_basic &
2036 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2037 else
2038 priv->staging_rxon.cck_basic_rates =
2039 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2040
2041 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2042 priv->staging_rxon.ofdm_basic_rates =
2043 ((priv->active_rate_basic &
2044 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2045 IWL_FIRST_OFDM_RATE) & 0xFF;
2046 else
2047 priv->staging_rxon.ofdm_basic_rates =
2048 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2049 }
2050
2051 void iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
2052 {
2053 unsigned long flags;
2054
2055 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2056 return;
2057
2058 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2059 disable_radio ? "OFF" : "ON");
2060
2061 if (disable_radio) {
2062 iwl4965_scan_cancel(priv);
2063 /* FIXME: This is a workaround for AP */
2064 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
2065 spin_lock_irqsave(&priv->lock, flags);
2066 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2067 CSR_UCODE_SW_BIT_RFKILL);
2068 spin_unlock_irqrestore(&priv->lock, flags);
2069 /* call the host command only if no hw rf-kill set */
2070 if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
2071 iwl_is_ready(priv))
2072 iwl4965_send_card_state(priv,
2073 CARD_STATE_CMD_DISABLE,
2074 0);
2075 set_bit(STATUS_RF_KILL_SW, &priv->status);
2076
2077 /* make sure mac80211 stop sending Tx frame */
2078 if (priv->mac80211_registered)
2079 ieee80211_stop_queues(priv->hw);
2080 }
2081 return;
2082 }
2083
2084 spin_lock_irqsave(&priv->lock, flags);
2085 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2086
2087 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2088 spin_unlock_irqrestore(&priv->lock, flags);
2089
2090 /* wake up ucode */
2091 msleep(10);
2092
2093 spin_lock_irqsave(&priv->lock, flags);
2094 iwl_read32(priv, CSR_UCODE_DRV_GP1);
2095 if (!iwl_grab_nic_access(priv))
2096 iwl_release_nic_access(priv);
2097 spin_unlock_irqrestore(&priv->lock, flags);
2098
2099 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2100 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2101 "disabled by HW switch\n");
2102 return;
2103 }
2104
2105 queue_work(priv->workqueue, &priv->restart);
2106 return;
2107 }
2108
2109 #define IWL_PACKET_RETRY_TIME HZ
2110
2111 int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
2112 {
2113 u16 sc = le16_to_cpu(header->seq_ctrl);
2114 u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
2115 u16 frag = sc & IEEE80211_SCTL_FRAG;
2116 u16 *last_seq, *last_frag;
2117 unsigned long *last_time;
2118
2119 switch (priv->iw_mode) {
2120 case IEEE80211_IF_TYPE_IBSS:{
2121 struct list_head *p;
2122 struct iwl4965_ibss_seq *entry = NULL;
2123 u8 *mac = header->addr2;
2124 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
2125
2126 __list_for_each(p, &priv->ibss_mac_hash[index]) {
2127 entry = list_entry(p, struct iwl4965_ibss_seq, list);
2128 if (!compare_ether_addr(entry->mac, mac))
2129 break;
2130 }
2131 if (p == &priv->ibss_mac_hash[index]) {
2132 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
2133 if (!entry) {
2134 IWL_ERROR("Cannot malloc new mac entry\n");
2135 return 0;
2136 }
2137 memcpy(entry->mac, mac, ETH_ALEN);
2138 entry->seq_num = seq;
2139 entry->frag_num = frag;
2140 entry->packet_time = jiffies;
2141 list_add(&entry->list, &priv->ibss_mac_hash[index]);
2142 return 0;
2143 }
2144 last_seq = &entry->seq_num;
2145 last_frag = &entry->frag_num;
2146 last_time = &entry->packet_time;
2147 break;
2148 }
2149 case IEEE80211_IF_TYPE_STA:
2150 last_seq = &priv->last_seq_num;
2151 last_frag = &priv->last_frag_num;
2152 last_time = &priv->last_packet_time;
2153 break;
2154 default:
2155 return 0;
2156 }
2157 if ((*last_seq == seq) &&
2158 time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
2159 if (*last_frag == frag)
2160 goto drop;
2161 if (*last_frag + 1 != frag)
2162 /* out-of-order fragment */
2163 goto drop;
2164 } else
2165 *last_seq = seq;
2166
2167 *last_frag = frag;
2168 *last_time = jiffies;
2169 return 0;
2170
2171 drop:
2172 return 1;
2173 }
2174
2175 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
2176
2177 #include "iwl-spectrum.h"
2178
2179 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
2180 #define BEACON_TIME_MASK_HIGH 0xFF000000
2181 #define TIME_UNIT 1024
2182
2183 /*
2184 * extended beacon time format
2185 * time in usec will be changed into a 32-bit value in 8:24 format
2186 * the high 1 byte is the beacon counts
2187 * the lower 3 bytes is the time in usec within one beacon interval
2188 */
2189
2190 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
2191 {
2192 u32 quot;
2193 u32 rem;
2194 u32 interval = beacon_interval * 1024;
2195
2196 if (!interval || !usec)
2197 return 0;
2198
2199 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
2200 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
2201
2202 return (quot << 24) + rem;
2203 }
2204
2205 /* base is usually what we get from ucode with each received frame,
2206 * the same as HW timer counter counting down
2207 */
2208
2209 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
2210 {
2211 u32 base_low = base & BEACON_TIME_MASK_LOW;
2212 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
2213 u32 interval = beacon_interval * TIME_UNIT;
2214 u32 res = (base & BEACON_TIME_MASK_HIGH) +
2215 (addon & BEACON_TIME_MASK_HIGH);
2216
2217 if (base_low > addon_low)
2218 res += base_low - addon_low;
2219 else if (base_low < addon_low) {
2220 res += interval + base_low - addon_low;
2221 res += (1 << 24);
2222 } else
2223 res += (1 << 24);
2224
2225 return cpu_to_le32(res);
2226 }
2227
2228 static int iwl4965_get_measurement(struct iwl_priv *priv,
2229 struct ieee80211_measurement_params *params,
2230 u8 type)
2231 {
2232 struct iwl4965_spectrum_cmd spectrum;
2233 struct iwl_rx_packet *res;
2234 struct iwl_host_cmd cmd = {
2235 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
2236 .data = (void *)&spectrum,
2237 .meta.flags = CMD_WANT_SKB,
2238 };
2239 u32 add_time = le64_to_cpu(params->start_time);
2240 int rc;
2241 int spectrum_resp_status;
2242 int duration = le16_to_cpu(params->duration);
2243
2244 if (iwl_is_associated(priv))
2245 add_time =
2246 iwl4965_usecs_to_beacons(
2247 le64_to_cpu(params->start_time) - priv->last_tsf,
2248 le16_to_cpu(priv->rxon_timing.beacon_interval));
2249
2250 memset(&spectrum, 0, sizeof(spectrum));
2251
2252 spectrum.channel_count = cpu_to_le16(1);
2253 spectrum.flags =
2254 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
2255 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
2256 cmd.len = sizeof(spectrum);
2257 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
2258
2259 if (iwl_is_associated(priv))
2260 spectrum.start_time =
2261 iwl4965_add_beacon_time(priv->last_beacon_time,
2262 add_time,
2263 le16_to_cpu(priv->rxon_timing.beacon_interval));
2264 else
2265 spectrum.start_time = 0;
2266
2267 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
2268 spectrum.channels[0].channel = params->channel;
2269 spectrum.channels[0].type = type;
2270 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
2271 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
2272 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
2273
2274 rc = iwl_send_cmd_sync(priv, &cmd);
2275 if (rc)
2276 return rc;
2277
2278 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
2279 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
2280 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
2281 rc = -EIO;
2282 }
2283
2284 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
2285 switch (spectrum_resp_status) {
2286 case 0: /* Command will be handled */
2287 if (res->u.spectrum.id != 0xff) {
2288 IWL_DEBUG_INFO
2289 ("Replaced existing measurement: %d\n",
2290 res->u.spectrum.id);
2291 priv->measurement_status &= ~MEASUREMENT_READY;
2292 }
2293 priv->measurement_status |= MEASUREMENT_ACTIVE;
2294 rc = 0;
2295 break;
2296
2297 case 1: /* Command will not be handled */
2298 rc = -EAGAIN;
2299 break;
2300 }
2301
2302 dev_kfree_skb_any(cmd.meta.u.skb);
2303
2304 return rc;
2305 }
2306 #endif
2307
2308 static void iwl4965_txstatus_to_ieee(struct iwl_priv *priv,
2309 struct iwl4965_tx_info *tx_sta)
2310 {
2311
2312 tx_sta->status.ack_signal = 0;
2313 tx_sta->status.excessive_retries = 0;
2314
2315 if (in_interrupt())
2316 ieee80211_tx_status_irqsafe(priv->hw,
2317 tx_sta->skb[0], &(tx_sta->status));
2318 else
2319 ieee80211_tx_status(priv->hw,
2320 tx_sta->skb[0], &(tx_sta->status));
2321
2322 tx_sta->skb[0] = NULL;
2323 }
2324
2325 /**
2326 * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
2327 *
2328 * When FW advances 'R' index, all entries between old and new 'R' index
2329 * need to be reclaimed. As result, some free space forms. If there is
2330 * enough free space (> low mark), wake the stack that feeds us.
2331 */
2332 int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
2333 {
2334 struct iwl_tx_queue *txq = &priv->txq[txq_id];
2335 struct iwl4965_queue *q = &txq->q;
2336 int nfreed = 0;
2337
2338 if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
2339 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
2340 "is out of range [0-%d] %d %d.\n", txq_id,
2341 index, q->n_bd, q->write_ptr, q->read_ptr);
2342 return 0;
2343 }
2344
2345 for (index = iwl_queue_inc_wrap(index, q->n_bd);
2346 q->read_ptr != index;
2347 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
2348 if (txq_id != IWL_CMD_QUEUE_NUM) {
2349 iwl4965_txstatus_to_ieee(priv,
2350 &(txq->txb[txq->q.read_ptr]));
2351 iwl_hw_txq_free_tfd(priv, txq);
2352 } else if (nfreed > 1) {
2353 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
2354 q->write_ptr, q->read_ptr);
2355 queue_work(priv->workqueue, &priv->restart);
2356 }
2357 nfreed++;
2358 }
2359
2360 return nfreed;
2361 }
2362
2363 static int iwl4965_is_tx_success(u32 status)
2364 {
2365 status &= TX_STATUS_MSK;
2366 return (status == TX_STATUS_SUCCESS)
2367 || (status == TX_STATUS_DIRECT_DONE);
2368 }
2369
2370 /******************************************************************************
2371 *
2372 * Generic RX handler implementations
2373 *
2374 ******************************************************************************/
2375 #ifdef CONFIG_IWL4965_HT
2376
2377 static inline int iwl4965_get_ra_sta_id(struct iwl_priv *priv,
2378 struct ieee80211_hdr *hdr)
2379 {
2380 if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
2381 return IWL_AP_ID;
2382 else {
2383 u8 *da = ieee80211_get_DA(hdr);
2384 return iwl_find_station(priv, da);
2385 }
2386 }
2387
2388 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
2389 struct iwl_priv *priv, int txq_id, int idx)
2390 {
2391 if (priv->txq[txq_id].txb[idx].skb[0])
2392 return (struct ieee80211_hdr *)priv->txq[txq_id].
2393 txb[idx].skb[0]->data;
2394 return NULL;
2395 }
2396
2397 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
2398 {
2399 __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
2400 tx_resp->frame_count);
2401 return le32_to_cpu(*scd_ssn) & MAX_SN;
2402
2403 }
2404
2405 /**
2406 * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
2407 */
2408 static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
2409 struct iwl_ht_agg *agg,
2410 struct iwl4965_tx_resp_agg *tx_resp,
2411 u16 start_idx)
2412 {
2413 u16 status;
2414 struct agg_tx_status *frame_status = &tx_resp->status;
2415 struct ieee80211_tx_status *tx_status = NULL;
2416 struct ieee80211_hdr *hdr = NULL;
2417 int i, sh;
2418 int txq_id, idx;
2419 u16 seq;
2420
2421 if (agg->wait_for_ba)
2422 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
2423
2424 agg->frame_count = tx_resp->frame_count;
2425 agg->start_idx = start_idx;
2426 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
2427 agg->bitmap = 0;
2428
2429 /* # frames attempted by Tx command */
2430 if (agg->frame_count == 1) {
2431 /* Only one frame was attempted; no block-ack will arrive */
2432 status = le16_to_cpu(frame_status[0].status);
2433 seq = le16_to_cpu(frame_status[0].sequence);
2434 idx = SEQ_TO_INDEX(seq);
2435 txq_id = SEQ_TO_QUEUE(seq);
2436
2437 /* FIXME: code repetition */
2438 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
2439 agg->frame_count, agg->start_idx, idx);
2440
2441 tx_status = &(priv->txq[txq_id].txb[idx].status);
2442 tx_status->retry_count = tx_resp->failure_frame;
2443 tx_status->control.flags &= ~IEEE80211_TXCTL_AMPDU;
2444 tx_status->flags = iwl4965_is_tx_success(status)?
2445 IEEE80211_TX_STATUS_ACK : 0;
2446 iwl4965_hwrate_to_tx_control(priv,
2447 le32_to_cpu(tx_resp->rate_n_flags),
2448 &tx_status->control);
2449 /* FIXME: code repetition end */
2450
2451 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
2452 status & 0xff, tx_resp->failure_frame);
2453 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
2454 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
2455
2456 agg->wait_for_ba = 0;
2457 } else {
2458 /* Two or more frames were attempted; expect block-ack */
2459 u64 bitmap = 0;
2460 int start = agg->start_idx;
2461
2462 /* Construct bit-map of pending frames within Tx window */
2463 for (i = 0; i < agg->frame_count; i++) {
2464 u16 sc;
2465 status = le16_to_cpu(frame_status[i].status);
2466 seq = le16_to_cpu(frame_status[i].sequence);
2467 idx = SEQ_TO_INDEX(seq);
2468 txq_id = SEQ_TO_QUEUE(seq);
2469
2470 if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
2471 AGG_TX_STATE_ABORT_MSK))
2472 continue;
2473
2474 IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
2475 agg->frame_count, txq_id, idx);
2476
2477 hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
2478
2479 sc = le16_to_cpu(hdr->seq_ctrl);
2480 if (idx != (SEQ_TO_SN(sc) & 0xff)) {
2481 IWL_ERROR("BUG_ON idx doesn't match seq control"
2482 " idx=%d, seq_idx=%d, seq=%d\n",
2483 idx, SEQ_TO_SN(sc),
2484 hdr->seq_ctrl);
2485 return -1;
2486 }
2487
2488 IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
2489 i, idx, SEQ_TO_SN(sc));
2490
2491 sh = idx - start;
2492 if (sh > 64) {
2493 sh = (start - idx) + 0xff;
2494 bitmap = bitmap << sh;
2495 sh = 0;
2496 start = idx;
2497 } else if (sh < -64)
2498 sh = 0xff - (start - idx);
2499 else if (sh < 0) {
2500 sh = start - idx;
2501 start = idx;
2502 bitmap = bitmap << sh;
2503 sh = 0;
2504 }
2505 bitmap |= (1 << sh);
2506 IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
2507 start, (u32)(bitmap & 0xFFFFFFFF));
2508 }
2509
2510 agg->bitmap = bitmap;
2511 agg->start_idx = start;
2512 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
2513 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
2514 agg->frame_count, agg->start_idx,
2515 (unsigned long long)agg->bitmap);
2516
2517 if (bitmap)
2518 agg->wait_for_ba = 1;
2519 }
2520 return 0;
2521 }
2522 #endif
2523
2524 /**
2525 * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
2526 */
2527 static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
2528 struct iwl_rx_mem_buffer *rxb)
2529 {
2530 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2531 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
2532 int txq_id = SEQ_TO_QUEUE(sequence);
2533 int index = SEQ_TO_INDEX(sequence);
2534 struct iwl_tx_queue *txq = &priv->txq[txq_id];
2535 struct ieee80211_tx_status *tx_status;
2536 struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
2537 u32 status = le32_to_cpu(tx_resp->status);
2538 #ifdef CONFIG_IWL4965_HT
2539 int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
2540 struct ieee80211_hdr *hdr;
2541 __le16 *qc;
2542 #endif
2543
2544 if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
2545 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
2546 "is out of range [0-%d] %d %d\n", txq_id,
2547 index, txq->q.n_bd, txq->q.write_ptr,
2548 txq->q.read_ptr);
2549 return;
2550 }
2551
2552 #ifdef CONFIG_IWL4965_HT
2553 hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
2554 qc = ieee80211_get_qos_ctrl(hdr);
2555
2556 if (qc)
2557 tid = le16_to_cpu(*qc) & 0xf;
2558
2559 sta_id = iwl4965_get_ra_sta_id(priv, hdr);
2560 if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
2561 IWL_ERROR("Station not known\n");
2562 return;
2563 }
2564
2565 if (txq->sched_retry) {
2566 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
2567 struct iwl_ht_agg *agg = NULL;
2568
2569 if (!qc)
2570 return;
2571
2572 agg = &priv->stations[sta_id].tid[tid].agg;
2573
2574 iwl4965_tx_status_reply_tx(priv, agg,
2575 (struct iwl4965_tx_resp_agg *)tx_resp, index);
2576
2577 if ((tx_resp->frame_count == 1) &&
2578 !iwl4965_is_tx_success(status)) {
2579 /* TODO: send BAR */
2580 }
2581
2582 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
2583 int freed, ampdu_q;
2584 index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
2585 IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
2586 "%d index %d\n", scd_ssn , index);
2587 freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
2588 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
2589
2590 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
2591 txq_id >= 0 && priv->mac80211_registered &&
2592 agg->state != IWL_EMPTYING_HW_QUEUE_DELBA) {
2593 /* calculate mac80211 ampdu sw queue to wake */
2594 ampdu_q = txq_id - IWL_BACK_QUEUE_FIRST_ID +
2595 priv->hw->queues;
2596 if (agg->state == IWL_AGG_OFF)
2597 ieee80211_wake_queue(priv->hw, txq_id);
2598 else
2599 ieee80211_wake_queue(priv->hw, ampdu_q);
2600 }
2601 iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
2602 }
2603 } else {
2604 #endif /* CONFIG_IWL4965_HT */
2605 tx_status = &(txq->txb[txq->q.read_ptr].status);
2606
2607 tx_status->retry_count = tx_resp->failure_frame;
2608 tx_status->flags =
2609 iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
2610 iwl4965_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags),
2611 &tx_status->control);
2612
2613 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
2614 "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
2615 status, le32_to_cpu(tx_resp->rate_n_flags),
2616 tx_resp->failure_frame);
2617
2618 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
2619 #ifdef CONFIG_IWL4965_HT
2620 if (index != -1) {
2621 int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
2622 if (tid != MAX_TID_COUNT)
2623 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
2624 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
2625 (txq_id >= 0) && priv->mac80211_registered)
2626 ieee80211_wake_queue(priv->hw, txq_id);
2627 if (tid != MAX_TID_COUNT)
2628 iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
2629 }
2630 }
2631 #endif /* CONFIG_IWL4965_HT */
2632
2633 if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
2634 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
2635 }
2636
2637
2638 static void iwl4965_rx_reply_alive(struct iwl_priv *priv,
2639 struct iwl_rx_mem_buffer *rxb)
2640 {
2641 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2642 struct iwl4965_alive_resp *palive;
2643 struct delayed_work *pwork;
2644
2645 palive = &pkt->u.alive_frame;
2646
2647 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
2648 "0x%01X 0x%01X\n",
2649 palive->is_valid, palive->ver_type,
2650 palive->ver_subtype);
2651
2652 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
2653 IWL_DEBUG_INFO("Initialization Alive received.\n");
2654 memcpy(&priv->card_alive_init,
2655 &pkt->u.alive_frame,
2656 sizeof(struct iwl4965_init_alive_resp));
2657 pwork = &priv->init_alive_start;
2658 } else {
2659 IWL_DEBUG_INFO("Runtime Alive received.\n");
2660 memcpy(&priv->card_alive, &pkt->u.alive_frame,
2661 sizeof(struct iwl4965_alive_resp));
2662 pwork = &priv->alive_start;
2663 }
2664
2665 /* We delay the ALIVE response by 5ms to
2666 * give the HW RF Kill time to activate... */
2667 if (palive->is_valid == UCODE_VALID_OK)
2668 queue_delayed_work(priv->workqueue, pwork,
2669 msecs_to_jiffies(5));
2670 else
2671 IWL_WARNING("uCode did not respond OK.\n");
2672 }
2673
2674 static void iwl4965_rx_reply_add_sta(struct iwl_priv *priv,
2675 struct iwl_rx_mem_buffer *rxb)
2676 {
2677 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2678
2679 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
2680 return;
2681 }
2682
2683 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
2684 struct iwl_rx_mem_buffer *rxb)
2685 {
2686 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2687
2688 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
2689 "seq 0x%04X ser 0x%08X\n",
2690 le32_to_cpu(pkt->u.err_resp.error_type),
2691 get_cmd_string(pkt->u.err_resp.cmd_id),
2692 pkt->u.err_resp.cmd_id,
2693 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2694 le32_to_cpu(pkt->u.err_resp.error_info));
2695 }
2696
2697 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2698
2699 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
2700 {
2701 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2702 struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon;
2703 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
2704 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
2705 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
2706 rxon->channel = csa->channel;
2707 priv->staging_rxon.channel = csa->channel;
2708 }
2709
2710 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
2711 struct iwl_rx_mem_buffer *rxb)
2712 {
2713 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
2714 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2715 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
2716
2717 if (!report->state) {
2718 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
2719 "Spectrum Measure Notification: Start\n");
2720 return;
2721 }
2722
2723 memcpy(&priv->measure_report, report, sizeof(*report));
2724 priv->measurement_status |= MEASUREMENT_READY;
2725 #endif
2726 }
2727
2728 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
2729 struct iwl_rx_mem_buffer *rxb)
2730 {
2731 #ifdef CONFIG_IWLWIFI_DEBUG
2732 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2733 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
2734 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
2735 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2736 #endif
2737 }
2738
2739 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2740 struct iwl_rx_mem_buffer *rxb)
2741 {
2742 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2743 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
2744 "notification for %s:\n",
2745 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
2746 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
2747 }
2748
2749 static void iwl4965_bg_beacon_update(struct work_struct *work)
2750 {
2751 struct iwl_priv *priv =
2752 container_of(work, struct iwl_priv, beacon_update);
2753 struct sk_buff *beacon;
2754
2755 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
2756 beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL);
2757
2758 if (!beacon) {
2759 IWL_ERROR("update beacon failed\n");
2760 return;
2761 }
2762
2763 mutex_lock(&priv->mutex);
2764 /* new beacon skb is allocated every time; dispose previous.*/
2765 if (priv->ibss_beacon)
2766 dev_kfree_skb(priv->ibss_beacon);
2767
2768 priv->ibss_beacon = beacon;
2769 mutex_unlock(&priv->mutex);
2770
2771 iwl4965_send_beacon_cmd(priv);
2772 }
2773
2774 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
2775 struct iwl_rx_mem_buffer *rxb)
2776 {
2777 #ifdef CONFIG_IWLWIFI_DEBUG
2778 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2779 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
2780 u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
2781
2782 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
2783 "tsf %d %d rate %d\n",
2784 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
2785 beacon->beacon_notify_hdr.failure_frame,
2786 le32_to_cpu(beacon->ibss_mgr_status),
2787 le32_to_cpu(beacon->high_tsf),
2788 le32_to_cpu(beacon->low_tsf), rate);
2789 #endif
2790
2791 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2792 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
2793 queue_work(priv->workqueue, &priv->beacon_update);
2794 }
2795
2796 /* Service response to REPLY_SCAN_CMD (0x80) */
2797 static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
2798 struct iwl_rx_mem_buffer *rxb)
2799 {
2800 #ifdef CONFIG_IWLWIFI_DEBUG
2801 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2802 struct iwl4965_scanreq_notification *notif =
2803 (struct iwl4965_scanreq_notification *)pkt->u.raw;
2804
2805 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
2806 #endif
2807 }
2808
2809 /* Service SCAN_START_NOTIFICATION (0x82) */
2810 static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
2811 struct iwl_rx_mem_buffer *rxb)
2812 {
2813 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2814 struct iwl4965_scanstart_notification *notif =
2815 (struct iwl4965_scanstart_notification *)pkt->u.raw;
2816 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
2817 IWL_DEBUG_SCAN("Scan start: "
2818 "%d [802.11%s] "
2819 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
2820 notif->channel,
2821 notif->band ? "bg" : "a",
2822 notif->tsf_high,
2823 notif->tsf_low, notif->status, notif->beacon_timer);
2824 }
2825
2826 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
2827 static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
2828 struct iwl_rx_mem_buffer *rxb)
2829 {
2830 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2831 struct iwl4965_scanresults_notification *notif =
2832 (struct iwl4965_scanresults_notification *)pkt->u.raw;
2833
2834 IWL_DEBUG_SCAN("Scan ch.res: "
2835 "%d [802.11%s] "
2836 "(TSF: 0x%08X:%08X) - %d "
2837 "elapsed=%lu usec (%dms since last)\n",
2838 notif->channel,
2839 notif->band ? "bg" : "a",
2840 le32_to_cpu(notif->tsf_high),
2841 le32_to_cpu(notif->tsf_low),
2842 le32_to_cpu(notif->statistics[0]),
2843 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
2844 jiffies_to_msecs(elapsed_jiffies
2845 (priv->last_scan_jiffies, jiffies)));
2846
2847 priv->last_scan_jiffies = jiffies;
2848 priv->next_scan_jiffies = 0;
2849 }
2850
2851 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
2852 static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
2853 struct iwl_rx_mem_buffer *rxb)
2854 {
2855 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2856 struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
2857
2858 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
2859 scan_notif->scanned_channels,
2860 scan_notif->tsf_low,
2861 scan_notif->tsf_high, scan_notif->status);
2862
2863 /* The HW is no longer scanning */
2864 clear_bit(STATUS_SCAN_HW, &priv->status);
2865
2866 /* The scan completion notification came in, so kill that timer... */
2867 cancel_delayed_work(&priv->scan_check);
2868
2869 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
2870 (priv->scan_bands == 2) ? "2.4" : "5.2",
2871 jiffies_to_msecs(elapsed_jiffies
2872 (priv->scan_pass_start, jiffies)));
2873
2874 /* Remove this scanned band from the list
2875 * of pending bands to scan */
2876 priv->scan_bands--;
2877
2878 /* If a request to abort was given, or the scan did not succeed
2879 * then we reset the scan state machine and terminate,
2880 * re-queuing another scan if one has been requested */
2881 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2882 IWL_DEBUG_INFO("Aborted scan completed.\n");
2883 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
2884 } else {
2885 /* If there are more bands on this scan pass reschedule */
2886 if (priv->scan_bands > 0)
2887 goto reschedule;
2888 }
2889
2890 priv->last_scan_jiffies = jiffies;
2891 priv->next_scan_jiffies = 0;
2892 IWL_DEBUG_INFO("Setting scan to off\n");
2893
2894 clear_bit(STATUS_SCANNING, &priv->status);
2895
2896 IWL_DEBUG_INFO("Scan took %dms\n",
2897 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
2898
2899 queue_work(priv->workqueue, &priv->scan_completed);
2900
2901 return;
2902
2903 reschedule:
2904 priv->scan_pass_start = jiffies;
2905 queue_work(priv->workqueue, &priv->request_scan);
2906 }
2907
2908 /* Handle notification from uCode that card's power state is changing
2909 * due to software, hardware, or critical temperature RFKILL */
2910 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
2911 struct iwl_rx_mem_buffer *rxb)
2912 {
2913 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2914 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
2915 unsigned long status = priv->status;
2916
2917 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
2918 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
2919 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
2920
2921 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
2922 RF_CARD_DISABLED)) {
2923
2924 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2925 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2926
2927 if (!iwl_grab_nic_access(priv)) {
2928 iwl_write_direct32(
2929 priv, HBUS_TARG_MBX_C,
2930 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
2931
2932 iwl_release_nic_access(priv);
2933 }
2934
2935 if (!(flags & RXON_CARD_DISABLED)) {
2936 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2937 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2938 if (!iwl_grab_nic_access(priv)) {
2939 iwl_write_direct32(
2940 priv, HBUS_TARG_MBX_C,
2941 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
2942
2943 iwl_release_nic_access(priv);
2944 }
2945 }
2946
2947 if (flags & RF_CARD_DISABLED) {
2948 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2949 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
2950 iwl_read32(priv, CSR_UCODE_DRV_GP1);
2951 if (!iwl_grab_nic_access(priv))
2952 iwl_release_nic_access(priv);
2953 }
2954 }
2955
2956 if (flags & HW_CARD_DISABLED)
2957 set_bit(STATUS_RF_KILL_HW, &priv->status);
2958 else
2959 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2960
2961
2962 if (flags & SW_CARD_DISABLED)
2963 set_bit(STATUS_RF_KILL_SW, &priv->status);
2964 else
2965 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2966
2967 if (!(flags & RXON_CARD_DISABLED))
2968 iwl4965_scan_cancel(priv);
2969
2970 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
2971 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
2972 (test_bit(STATUS_RF_KILL_SW, &status) !=
2973 test_bit(STATUS_RF_KILL_SW, &priv->status)))
2974 queue_work(priv->workqueue, &priv->rf_kill);
2975 else
2976 wake_up_interruptible(&priv->wait_command_queue);
2977 }
2978
2979 /**
2980 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
2981 *
2982 * Setup the RX handlers for each of the reply types sent from the uCode
2983 * to the host.
2984 *
2985 * This function chains into the hardware specific files for them to setup
2986 * any hardware specific handlers as well.
2987 */
2988 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
2989 {
2990 priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
2991 priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
2992 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
2993 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
2994 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
2995 iwl4965_rx_spectrum_measure_notif;
2996 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
2997 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
2998 iwl4965_rx_pm_debug_statistics_notif;
2999 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
3000
3001 /*
3002 * The same handler is used for both the REPLY to a discrete
3003 * statistics request from the host as well as for the periodic
3004 * statistics notifications (after received beacons) from the uCode.
3005 */
3006 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
3007 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
3008
3009 priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
3010 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
3011 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3012 iwl4965_rx_scan_results_notif;
3013 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3014 iwl4965_rx_scan_complete_notif;
3015 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
3016 priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
3017
3018 /* Set up hardware specific Rx handlers */
3019 priv->cfg->ops->lib->rx_handler_setup(priv);
3020 }
3021
3022 /**
3023 * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3024 * @rxb: Rx buffer to reclaim
3025 *
3026 * If an Rx buffer has an async callback associated with it the callback
3027 * will be executed. The attached skb (if present) will only be freed
3028 * if the callback returns 1
3029 */
3030 static void iwl4965_tx_cmd_complete(struct iwl_priv *priv,
3031 struct iwl_rx_mem_buffer *rxb)
3032 {
3033 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
3034 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3035 int txq_id = SEQ_TO_QUEUE(sequence);
3036 int index = SEQ_TO_INDEX(sequence);
3037 int huge = sequence & SEQ_HUGE_FRAME;
3038 int cmd_index;
3039 struct iwl_cmd *cmd;
3040
3041 /* If a Tx command is being handled and it isn't in the actual
3042 * command queue then there a command routing bug has been introduced
3043 * in the queue management code. */
3044 if (txq_id != IWL_CMD_QUEUE_NUM)
3045 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
3046 txq_id, pkt->hdr.cmd);
3047 BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3048
3049 cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
3050 cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3051
3052 /* Input error checking is done when commands are added to queue. */
3053 if (cmd->meta.flags & CMD_WANT_SKB) {
3054 cmd->meta.source->u.skb = rxb->skb;
3055 rxb->skb = NULL;
3056 } else if (cmd->meta.u.callback &&
3057 !cmd->meta.u.callback(priv, cmd, rxb->skb))
3058 rxb->skb = NULL;
3059
3060 iwl4965_tx_queue_reclaim(priv, txq_id, index);
3061
3062 if (!(cmd->meta.flags & CMD_ASYNC)) {
3063 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3064 wake_up_interruptible(&priv->wait_command_queue);
3065 }
3066 }
3067
3068 /*
3069 * this should be called while priv->lock is locked
3070 */
3071 static void __iwl_rx_replenish(struct iwl_priv *priv)
3072 {
3073 iwl_rx_allocate(priv);
3074 iwl_rx_queue_restock(priv);
3075 }
3076
3077
3078 /**
3079 * iwl_rx_handle - Main entry function for receiving responses from uCode
3080 *
3081 * Uses the priv->rx_handlers callback function array to invoke
3082 * the appropriate handlers, including command responses,
3083 * frame-received notifications, and other notifications.
3084 */
3085 void iwl_rx_handle(struct iwl_priv *priv)
3086 {
3087 struct iwl_rx_mem_buffer *rxb;
3088 struct iwl_rx_packet *pkt;
3089 struct iwl_rx_queue *rxq = &priv->rxq;
3090 u32 r, i;
3091 int reclaim;
3092 unsigned long flags;
3093 u8 fill_rx = 0;
3094 u32 count = 8;
3095
3096 /* uCode's read index (stored in shared DRAM) indicates the last Rx
3097 * buffer that the driver may process (last buffer filled by ucode). */
3098 r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
3099 i = rxq->read;
3100
3101 /* Rx interrupt, but nothing sent from uCode */
3102 if (i == r)
3103 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
3104
3105 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
3106 fill_rx = 1;
3107
3108 while (i != r) {
3109 rxb = rxq->queue[i];
3110
3111 /* If an RXB doesn't have a Rx queue slot associated with it,
3112 * then a bug has been introduced in the queue refilling
3113 * routines -- catch it here */
3114 BUG_ON(rxb == NULL);
3115
3116 rxq->queue[i] = NULL;
3117
3118 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
3119 priv->hw_params.rx_buf_size,
3120 PCI_DMA_FROMDEVICE);
3121 pkt = (struct iwl_rx_packet *)rxb->skb->data;
3122
3123 /* Reclaim a command buffer only if this packet is a response
3124 * to a (driver-originated) command.
3125 * If the packet (e.g. Rx frame) originated from uCode,
3126 * there is no command buffer to reclaim.
3127 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
3128 * but apparently a few don't get set; catch them here. */
3129 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
3130 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
3131 (pkt->hdr.cmd != REPLY_RX) &&
3132 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
3133 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
3134 (pkt->hdr.cmd != REPLY_TX);
3135
3136 /* Based on type of command response or notification,
3137 * handle those that need handling via function in
3138 * rx_handlers table. See iwl4965_setup_rx_handlers() */
3139 if (priv->rx_handlers[pkt->hdr.cmd]) {
3140 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
3141 "r = %d, i = %d, %s, 0x%02x\n", r, i,
3142 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
3143 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
3144 } else {
3145 /* No handling needed */
3146 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
3147 "r %d i %d No handler needed for %s, 0x%02x\n",
3148 r, i, get_cmd_string(pkt->hdr.cmd),
3149 pkt->hdr.cmd);
3150 }
3151
3152 if (reclaim) {
3153 /* Invoke any callbacks, transfer the skb to caller, and
3154 * fire off the (possibly) blocking iwl_send_cmd()
3155 * as we reclaim the driver command queue */
3156 if (rxb && rxb->skb)
3157 iwl4965_tx_cmd_complete(priv, rxb);
3158 else
3159 IWL_WARNING("Claim null rxb?\n");
3160 }
3161
3162 /* For now we just don't re-use anything. We can tweak this
3163 * later to try and re-use notification packets and SKBs that
3164 * fail to Rx correctly */
3165 if (rxb->skb != NULL) {
3166 priv->alloc_rxb_skb--;
3167 dev_kfree_skb_any(rxb->skb);
3168 rxb->skb = NULL;
3169 }
3170
3171 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
3172 priv->hw_params.rx_buf_size,
3173 PCI_DMA_FROMDEVICE);
3174 spin_lock_irqsave(&rxq->lock, flags);
3175 list_add_tail(&rxb->list, &priv->rxq.rx_used);
3176 spin_unlock_irqrestore(&rxq->lock, flags);
3177 i = (i + 1) & RX_QUEUE_MASK;
3178 /* If there are a lot of unused frames,
3179 * restock the Rx queue so ucode wont assert. */
3180 if (fill_rx) {
3181 count++;
3182 if (count >= 8) {
3183 priv->rxq.read = i;
3184 __iwl_rx_replenish(priv);
3185 count = 0;
3186 }
3187 }
3188 }
3189
3190 /* Backtrack one entry */
3191 priv->rxq.read = i;
3192 iwl_rx_queue_restock(priv);
3193 }
3194 /* Convert linear signal-to-noise ratio into dB */
3195 static u8 ratio2dB[100] = {
3196 /* 0 1 2 3 4 5 6 7 8 9 */
3197 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
3198 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
3199 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
3200 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
3201 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
3202 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
3203 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
3204 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
3205 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
3206 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
3207 };
3208
3209 /* Calculates a relative dB value from a ratio of linear
3210 * (i.e. not dB) signal levels.
3211 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
3212 int iwl4965_calc_db_from_ratio(int sig_ratio)
3213 {
3214 /* 1000:1 or higher just report as 60 dB */
3215 if (sig_ratio >= 1000)
3216 return 60;
3217
3218 /* 100:1 or higher, divide by 10 and use table,
3219 * add 20 dB to make up for divide by 10 */
3220 if (sig_ratio >= 100)
3221 return (20 + (int)ratio2dB[sig_ratio/10]);
3222
3223 /* We shouldn't see this */
3224 if (sig_ratio < 1)
3225 return 0;
3226
3227 /* Use table for ratios 1:1 - 99:1 */
3228 return (int)ratio2dB[sig_ratio];
3229 }
3230
3231 #define PERFECT_RSSI (-20) /* dBm */
3232 #define WORST_RSSI (-95) /* dBm */
3233 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
3234
3235 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
3236 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
3237 * about formulas used below. */
3238 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
3239 {
3240 int sig_qual;
3241 int degradation = PERFECT_RSSI - rssi_dbm;
3242
3243 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
3244 * as indicator; formula is (signal dbm - noise dbm).
3245 * SNR at or above 40 is a great signal (100%).
3246 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
3247 * Weakest usable signal is usually 10 - 15 dB SNR. */
3248 if (noise_dbm) {
3249 if (rssi_dbm - noise_dbm >= 40)
3250 return 100;
3251 else if (rssi_dbm < noise_dbm)
3252 return 0;
3253 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
3254
3255 /* Else use just the signal level.
3256 * This formula is a least squares fit of data points collected and
3257 * compared with a reference system that had a percentage (%) display
3258 * for signal quality. */
3259 } else
3260 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
3261 (15 * RSSI_RANGE + 62 * degradation)) /
3262 (RSSI_RANGE * RSSI_RANGE);
3263
3264 if (sig_qual > 100)
3265 sig_qual = 100;
3266 else if (sig_qual < 1)
3267 sig_qual = 0;
3268
3269 return sig_qual;
3270 }
3271
3272 /**
3273 * iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
3274 */
3275 static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv,
3276 struct iwl_tx_queue *txq)
3277 {
3278 u32 reg = 0;
3279 int rc = 0;
3280 int txq_id = txq->q.id;
3281
3282 if (txq->need_update == 0)
3283 return rc;
3284
3285 /* if we're trying to save power */
3286 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3287 /* wake up nic if it's powered down ...
3288 * uCode will wake up, and interrupt us again, so next
3289 * time we'll skip this part. */
3290 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
3291
3292 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3293 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
3294 iwl_set_bit(priv, CSR_GP_CNTRL,
3295 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3296 return rc;
3297 }
3298
3299 /* restore this queue's parameters in nic hardware. */
3300 rc = iwl_grab_nic_access(priv);
3301 if (rc)
3302 return rc;
3303 iwl_write_direct32(priv, HBUS_TARG_WRPTR,
3304 txq->q.write_ptr | (txq_id << 8));
3305 iwl_release_nic_access(priv);
3306
3307 /* else not in power-save mode, uCode will never sleep when we're
3308 * trying to tx (during RFKILL, we're not trying to tx). */
3309 } else
3310 iwl_write32(priv, HBUS_TARG_WRPTR,
3311 txq->q.write_ptr | (txq_id << 8));
3312
3313 txq->need_update = 0;
3314
3315 return rc;
3316 }
3317
3318 #ifdef CONFIG_IWLWIFI_DEBUG
3319 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
3320 {
3321 struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
3322 DECLARE_MAC_BUF(mac);
3323
3324 IWL_DEBUG_RADIO("RX CONFIG:\n");
3325 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
3326 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
3327 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
3328 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
3329 le32_to_cpu(rxon->filter_flags));
3330 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
3331 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
3332 rxon->ofdm_basic_rates);
3333 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
3334 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
3335 print_mac(mac, rxon->node_addr));
3336 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
3337 print_mac(mac, rxon->bssid_addr));
3338 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
3339 }
3340 #endif
3341
3342 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
3343 {
3344 IWL_DEBUG_ISR("Enabling interrupts\n");
3345 set_bit(STATUS_INT_ENABLED, &priv->status);
3346 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
3347 }
3348
3349 /* call this function to flush any scheduled tasklet */
3350 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
3351 {
3352 /* wait to make sure we flush pedding tasklet*/
3353 synchronize_irq(priv->pci_dev->irq);
3354 tasklet_kill(&priv->irq_tasklet);
3355 }
3356
3357 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
3358 {
3359 clear_bit(STATUS_INT_ENABLED, &priv->status);
3360
3361 /* disable interrupts from uCode/NIC to host */
3362 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
3363
3364 /* acknowledge/clear/reset any interrupts still pending
3365 * from uCode or flow handler (Rx/Tx DMA) */
3366 iwl_write32(priv, CSR_INT, 0xffffffff);
3367 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
3368 IWL_DEBUG_ISR("Disabled interrupts\n");
3369 }
3370
3371 static const char *desc_lookup(int i)
3372 {
3373 switch (i) {
3374 case 1:
3375 return "FAIL";
3376 case 2:
3377 return "BAD_PARAM";
3378 case 3:
3379 return "BAD_CHECKSUM";
3380 case 4:
3381 return "NMI_INTERRUPT";
3382 case 5:
3383 return "SYSASSERT";
3384 case 6:
3385 return "FATAL_ERROR";
3386 }
3387
3388 return "UNKNOWN";
3389 }
3390
3391 #define ERROR_START_OFFSET (1 * sizeof(u32))
3392 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
3393
3394 static void iwl4965_dump_nic_error_log(struct iwl_priv *priv)
3395 {
3396 u32 data2, line;
3397 u32 desc, time, count, base, data1;
3398 u32 blink1, blink2, ilink1, ilink2;
3399 int rc;
3400
3401 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
3402
3403 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
3404 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
3405 return;
3406 }
3407
3408 rc = iwl_grab_nic_access(priv);
3409 if (rc) {
3410 IWL_WARNING("Can not read from adapter at this time.\n");
3411 return;
3412 }
3413
3414 count = iwl_read_targ_mem(priv, base);
3415
3416 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
3417 IWL_ERROR("Start IWL Error Log Dump:\n");
3418 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
3419 }
3420
3421 desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
3422 blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
3423 blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
3424 ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
3425 ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
3426 data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
3427 data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
3428 line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
3429 time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
3430
3431 IWL_ERROR("Desc Time "
3432 "data1 data2 line\n");
3433 IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
3434 desc_lookup(desc), desc, time, data1, data2, line);
3435 IWL_ERROR("blink1 blink2 ilink1 ilink2\n");
3436 IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
3437 ilink1, ilink2);
3438
3439 iwl_release_nic_access(priv);
3440 }
3441
3442 #define EVENT_START_OFFSET (4 * sizeof(u32))
3443
3444 /**
3445 * iwl4965_print_event_log - Dump error event log to syslog
3446 *
3447 * NOTE: Must be called with iwl_grab_nic_access() already obtained!
3448 */
3449 static void iwl4965_print_event_log(struct iwl_priv *priv, u32 start_idx,
3450 u32 num_events, u32 mode)
3451 {
3452 u32 i;
3453 u32 base; /* SRAM byte address of event log header */
3454 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
3455 u32 ptr; /* SRAM byte address of log data */
3456 u32 ev, time, data; /* event log data */
3457
3458 if (num_events == 0)
3459 return;
3460
3461 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
3462
3463 if (mode == 0)
3464 event_size = 2 * sizeof(u32);
3465 else
3466 event_size = 3 * sizeof(u32);
3467
3468 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
3469
3470 /* "time" is actually "data" for mode 0 (no timestamp).
3471 * place event id # at far right for easier visual parsing. */
3472 for (i = 0; i < num_events; i++) {
3473 ev = iwl_read_targ_mem(priv, ptr);
3474 ptr += sizeof(u32);
3475 time = iwl_read_targ_mem(priv, ptr);
3476 ptr += sizeof(u32);
3477 if (mode == 0)
3478 IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
3479 else {
3480 data = iwl_read_targ_mem(priv, ptr);
3481 ptr += sizeof(u32);
3482 IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
3483 }
3484 }
3485 }
3486
3487 static void iwl4965_dump_nic_event_log(struct iwl_priv *priv)
3488 {
3489 int rc;
3490 u32 base; /* SRAM byte address of event log header */
3491 u32 capacity; /* event log capacity in # entries */
3492 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
3493 u32 num_wraps; /* # times uCode wrapped to top of log */
3494 u32 next_entry; /* index of next entry to be written by uCode */
3495 u32 size; /* # entries that we'll print */
3496
3497 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
3498 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
3499 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
3500 return;
3501 }
3502
3503 rc = iwl_grab_nic_access(priv);
3504 if (rc) {
3505 IWL_WARNING("Can not read from adapter at this time.\n");
3506 return;
3507 }
3508
3509 /* event log header */
3510 capacity = iwl_read_targ_mem(priv, base);
3511 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
3512 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
3513 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
3514
3515 size = num_wraps ? capacity : next_entry;
3516
3517 /* bail out if nothing in log */
3518 if (size == 0) {
3519 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
3520 iwl_release_nic_access(priv);
3521 return;
3522 }
3523
3524 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
3525 size, num_wraps);
3526
3527 /* if uCode has wrapped back to top of log, start at the oldest entry,
3528 * i.e the next one that uCode would fill. */
3529 if (num_wraps)
3530 iwl4965_print_event_log(priv, next_entry,
3531 capacity - next_entry, mode);
3532
3533 /* (then/else) start at top of log */
3534 iwl4965_print_event_log(priv, 0, next_entry, mode);
3535
3536 iwl_release_nic_access(priv);
3537 }
3538
3539 /**
3540 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
3541 */
3542 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
3543 {
3544 /* Set the FW error flag -- cleared on iwl4965_down */
3545 set_bit(STATUS_FW_ERROR, &priv->status);
3546
3547 /* Cancel currently queued command. */
3548 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3549
3550 #ifdef CONFIG_IWLWIFI_DEBUG
3551 if (priv->debug_level & IWL_DL_FW_ERRORS) {
3552 iwl4965_dump_nic_error_log(priv);
3553 iwl4965_dump_nic_event_log(priv);
3554 iwl4965_print_rx_config_cmd(priv);
3555 }
3556 #endif
3557
3558 wake_up_interruptible(&priv->wait_command_queue);
3559
3560 /* Keep the restart process from trying to send host
3561 * commands by clearing the INIT status bit */
3562 clear_bit(STATUS_READY, &priv->status);
3563
3564 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3565 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
3566 "Restarting adapter due to uCode error.\n");
3567
3568 if (iwl_is_associated(priv)) {
3569 memcpy(&priv->recovery_rxon, &priv->active_rxon,
3570 sizeof(priv->recovery_rxon));
3571 priv->error_recovering = 1;
3572 }
3573 queue_work(priv->workqueue, &priv->restart);
3574 }
3575 }
3576
3577 static void iwl4965_error_recovery(struct iwl_priv *priv)
3578 {
3579 unsigned long flags;
3580
3581 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
3582 sizeof(priv->staging_rxon));
3583 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3584 iwl4965_commit_rxon(priv);
3585
3586 iwl4965_rxon_add_station(priv, priv->bssid, 1);
3587
3588 spin_lock_irqsave(&priv->lock, flags);
3589 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
3590 priv->error_recovering = 0;
3591 spin_unlock_irqrestore(&priv->lock, flags);
3592 }
3593
3594 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
3595 {
3596 u32 inta, handled = 0;
3597 u32 inta_fh;
3598 unsigned long flags;
3599 #ifdef CONFIG_IWLWIFI_DEBUG
3600 u32 inta_mask;
3601 #endif
3602
3603 spin_lock_irqsave(&priv->lock, flags);
3604
3605 /* Ack/clear/reset pending uCode interrupts.
3606 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
3607 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
3608 inta = iwl_read32(priv, CSR_INT);
3609 iwl_write32(priv, CSR_INT, inta);
3610
3611 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
3612 * Any new interrupts that happen after this, either while we're
3613 * in this tasklet, or later, will show up in next ISR/tasklet. */
3614 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
3615 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
3616
3617 #ifdef CONFIG_IWLWIFI_DEBUG
3618 if (priv->debug_level & IWL_DL_ISR) {
3619 /* just for debug */
3620 inta_mask = iwl_read32(priv, CSR_INT_MASK);
3621 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
3622 inta, inta_mask, inta_fh);
3623 }
3624 #endif
3625
3626 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
3627 * atomic, make sure that inta covers all the interrupts that
3628 * we've discovered, even if FH interrupt came in just after
3629 * reading CSR_INT. */
3630 if (inta_fh & CSR49_FH_INT_RX_MASK)
3631 inta |= CSR_INT_BIT_FH_RX;
3632 if (inta_fh & CSR49_FH_INT_TX_MASK)
3633 inta |= CSR_INT_BIT_FH_TX;
3634
3635 /* Now service all interrupt bits discovered above. */
3636 if (inta & CSR_INT_BIT_HW_ERR) {
3637 IWL_ERROR("Microcode HW error detected. Restarting.\n");
3638
3639 /* Tell the device to stop sending interrupts */
3640 iwl4965_disable_interrupts(priv);
3641
3642 iwl4965_irq_handle_error(priv);
3643
3644 handled |= CSR_INT_BIT_HW_ERR;
3645
3646 spin_unlock_irqrestore(&priv->lock, flags);
3647
3648 return;
3649 }
3650
3651 #ifdef CONFIG_IWLWIFI_DEBUG
3652 if (priv->debug_level & (IWL_DL_ISR)) {
3653 /* NIC fires this, but we don't use it, redundant with WAKEUP */
3654 if (inta & CSR_INT_BIT_SCD)
3655 IWL_DEBUG_ISR("Scheduler finished to transmit "
3656 "the frame/frames.\n");
3657
3658 /* Alive notification via Rx interrupt will do the real work */
3659 if (inta & CSR_INT_BIT_ALIVE)
3660 IWL_DEBUG_ISR("Alive interrupt\n");
3661 }
3662 #endif
3663 /* Safely ignore these bits for debug checks below */
3664 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
3665
3666 /* HW RF KILL switch toggled */
3667 if (inta & CSR_INT_BIT_RF_KILL) {
3668 int hw_rf_kill = 0;
3669 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
3670 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
3671 hw_rf_kill = 1;
3672
3673 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
3674 "RF_KILL bit toggled to %s.\n",
3675 hw_rf_kill ? "disable radio":"enable radio");
3676
3677 /* Queue restart only if RF_KILL switch was set to "kill"
3678 * when we loaded driver, and is now set to "enable".
3679 * After we're Alive, RF_KILL gets handled by
3680 * iwl4965_rx_card_state_notif() */
3681 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
3682 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3683 queue_work(priv->workqueue, &priv->restart);
3684 }
3685
3686 handled |= CSR_INT_BIT_RF_KILL;
3687 }
3688
3689 /* Chip got too hot and stopped itself */
3690 if (inta & CSR_INT_BIT_CT_KILL) {
3691 IWL_ERROR("Microcode CT kill error detected.\n");
3692 handled |= CSR_INT_BIT_CT_KILL;
3693 }
3694
3695 /* Error detected by uCode */
3696 if (inta & CSR_INT_BIT_SW_ERR) {
3697 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
3698 inta);
3699 iwl4965_irq_handle_error(priv);
3700 handled |= CSR_INT_BIT_SW_ERR;
3701 }
3702
3703 /* uCode wakes up after power-down sleep */
3704 if (inta & CSR_INT_BIT_WAKEUP) {
3705 IWL_DEBUG_ISR("Wakeup interrupt\n");
3706 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
3707 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]);
3708 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]);
3709 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]);
3710 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]);
3711 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]);
3712 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]);
3713
3714 handled |= CSR_INT_BIT_WAKEUP;
3715 }
3716
3717 /* All uCode command responses, including Tx command responses,
3718 * Rx "responses" (frame-received notification), and other
3719 * notifications from uCode come through here*/
3720 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
3721 iwl_rx_handle(priv);
3722 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
3723 }
3724
3725 if (inta & CSR_INT_BIT_FH_TX) {
3726 IWL_DEBUG_ISR("Tx interrupt\n");
3727 handled |= CSR_INT_BIT_FH_TX;
3728 }
3729
3730 if (inta & ~handled)
3731 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
3732
3733 if (inta & ~CSR_INI_SET_MASK) {
3734 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
3735 inta & ~CSR_INI_SET_MASK);
3736 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
3737 }
3738
3739 /* Re-enable all interrupts */
3740 /* only Re-enable if diabled by irq */
3741 if (test_bit(STATUS_INT_ENABLED, &priv->status))
3742 iwl4965_enable_interrupts(priv);
3743
3744 #ifdef CONFIG_IWLWIFI_DEBUG
3745 if (priv->debug_level & (IWL_DL_ISR)) {
3746 inta = iwl_read32(priv, CSR_INT);
3747 inta_mask = iwl_read32(priv, CSR_INT_MASK);
3748 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
3749 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
3750 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
3751 }
3752 #endif
3753 spin_unlock_irqrestore(&priv->lock, flags);
3754 }
3755
3756 static irqreturn_t iwl4965_isr(int irq, void *data)
3757 {
3758 struct iwl_priv *priv = data;
3759 u32 inta, inta_mask;
3760 u32 inta_fh;
3761 if (!priv)
3762 return IRQ_NONE;
3763
3764 spin_lock(&priv->lock);
3765
3766 /* Disable (but don't clear!) interrupts here to avoid
3767 * back-to-back ISRs and sporadic interrupts from our NIC.
3768 * If we have something to service, the tasklet will re-enable ints.
3769 * If we *don't* have something, we'll re-enable before leaving here. */
3770 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
3771 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
3772
3773 /* Discover which interrupts are active/pending */
3774 inta = iwl_read32(priv, CSR_INT);
3775 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
3776
3777 /* Ignore interrupt if there's nothing in NIC to service.
3778 * This may be due to IRQ shared with another device,
3779 * or due to sporadic interrupts thrown from our NIC. */
3780 if (!inta && !inta_fh) {
3781 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
3782 goto none;
3783 }
3784
3785 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
3786 /* Hardware disappeared. It might have already raised
3787 * an interrupt */
3788 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
3789 goto unplugged;
3790 }
3791
3792 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
3793 inta, inta_mask, inta_fh);
3794
3795 inta &= ~CSR_INT_BIT_SCD;
3796
3797 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
3798 if (likely(inta || inta_fh))
3799 tasklet_schedule(&priv->irq_tasklet);
3800
3801 unplugged:
3802 spin_unlock(&priv->lock);
3803 return IRQ_HANDLED;
3804
3805 none:
3806 /* re-enable interrupts here since we don't have anything to service. */
3807 /* only Re-enable if diabled by irq */
3808 if (test_bit(STATUS_INT_ENABLED, &priv->status))
3809 iwl4965_enable_interrupts(priv);
3810 spin_unlock(&priv->lock);
3811 return IRQ_NONE;
3812 }
3813
3814 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
3815 * sending probe req. This should be set long enough to hear probe responses
3816 * from more than one AP. */
3817 #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
3818 #define IWL_ACTIVE_DWELL_TIME_52 (10)
3819
3820 /* For faster active scanning, scan will move to the next channel if fewer than
3821 * PLCP_QUIET_THRESH packets are heard on this channel within
3822 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
3823 * time if it's a quiet channel (nothing responded to our probe, and there's
3824 * no other traffic).
3825 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
3826 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
3827 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
3828
3829 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
3830 * Must be set longer than active dwell time.
3831 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
3832 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
3833 #define IWL_PASSIVE_DWELL_TIME_52 (10)
3834 #define IWL_PASSIVE_DWELL_BASE (100)
3835 #define IWL_CHANNEL_TUNE_TIME 5
3836
3837 static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
3838 enum ieee80211_band band)
3839 {
3840 if (band == IEEE80211_BAND_5GHZ)
3841 return IWL_ACTIVE_DWELL_TIME_52;
3842 else
3843 return IWL_ACTIVE_DWELL_TIME_24;
3844 }
3845
3846 static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
3847 enum ieee80211_band band)
3848 {
3849 u16 active = iwl4965_get_active_dwell_time(priv, band);
3850 u16 passive = (band != IEEE80211_BAND_5GHZ) ?
3851 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
3852 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
3853
3854 if (iwl_is_associated(priv)) {
3855 /* If we're associated, we clamp the maximum passive
3856 * dwell time to be 98% of the beacon interval (minus
3857 * 2 * channel tune time) */
3858 passive = priv->beacon_int;
3859 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
3860 passive = IWL_PASSIVE_DWELL_BASE;
3861 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
3862 }
3863
3864 if (passive <= active)
3865 passive = active + 1;
3866
3867 return passive;
3868 }
3869
3870 static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
3871 enum ieee80211_band band,
3872 u8 is_active, u8 direct_mask,
3873 struct iwl4965_scan_channel *scan_ch)
3874 {
3875 const struct ieee80211_channel *channels = NULL;
3876 const struct ieee80211_supported_band *sband;
3877 const struct iwl_channel_info *ch_info;
3878 u16 passive_dwell = 0;
3879 u16 active_dwell = 0;
3880 int added, i;
3881
3882 sband = iwl_get_hw_mode(priv, band);
3883 if (!sband)
3884 return 0;
3885
3886 channels = sband->channels;
3887
3888 active_dwell = iwl4965_get_active_dwell_time(priv, band);
3889 passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
3890
3891 for (i = 0, added = 0; i < sband->n_channels; i++) {
3892 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
3893 continue;
3894
3895 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
3896
3897 ch_info = iwl_get_channel_info(priv, band,
3898 scan_ch->channel);
3899 if (!is_channel_valid(ch_info)) {
3900 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
3901 scan_ch->channel);
3902 continue;
3903 }
3904
3905 if (!is_active || is_channel_passive(ch_info) ||
3906 (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
3907 scan_ch->type = 0; /* passive */
3908 else
3909 scan_ch->type = 1; /* active */
3910
3911 if (scan_ch->type & 1)
3912 scan_ch->type |= (direct_mask << 1);
3913
3914 scan_ch->active_dwell = cpu_to_le16(active_dwell);
3915 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
3916
3917 /* Set txpower levels to defaults */
3918 scan_ch->tpc.dsp_atten = 110;
3919 /* scan_pwr_info->tpc.dsp_atten; */
3920
3921 /*scan_pwr_info->tpc.tx_gain; */
3922 if (band == IEEE80211_BAND_5GHZ)
3923 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
3924 else {
3925 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
3926 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
3927 * power level:
3928 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
3929 */
3930 }
3931
3932 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
3933 scan_ch->channel,
3934 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
3935 (scan_ch->type & 1) ?
3936 active_dwell : passive_dwell);
3937
3938 scan_ch++;
3939 added++;
3940 }
3941
3942 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
3943 return added;
3944 }
3945
3946 /******************************************************************************
3947 *
3948 * uCode download functions
3949 *
3950 ******************************************************************************/
3951
3952 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
3953 {
3954 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
3955 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
3956 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
3957 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
3958 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
3959 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
3960 }
3961
3962 static void iwl4965_nic_start(struct iwl_priv *priv)
3963 {
3964 /* Remove all resets to allow NIC to operate */
3965 iwl_write32(priv, CSR_RESET, 0);
3966 }
3967
3968
3969 /**
3970 * iwl4965_read_ucode - Read uCode images from disk file.
3971 *
3972 * Copy into buffers for card to fetch via bus-mastering
3973 */
3974 static int iwl4965_read_ucode(struct iwl_priv *priv)
3975 {
3976 struct iwl4965_ucode *ucode;
3977 int ret;
3978 const struct firmware *ucode_raw;
3979 const char *name = priv->cfg->fw_name;
3980 u8 *src;
3981 size_t len;
3982 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
3983
3984 /* Ask kernel firmware_class module to get the boot firmware off disk.
3985 * request_firmware() is synchronous, file is in memory on return. */
3986 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
3987 if (ret < 0) {
3988 IWL_ERROR("%s firmware file req failed: Reason %d\n",
3989 name, ret);
3990 goto error;
3991 }
3992
3993 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
3994 name, ucode_raw->size);
3995
3996 /* Make sure that we got at least our header! */
3997 if (ucode_raw->size < sizeof(*ucode)) {
3998 IWL_ERROR("File size way too small!\n");
3999 ret = -EINVAL;
4000 goto err_release;
4001 }
4002
4003 /* Data from ucode file: header followed by uCode images */
4004 ucode = (void *)ucode_raw->data;
4005
4006 ver = le32_to_cpu(ucode->ver);
4007 inst_size = le32_to_cpu(ucode->inst_size);
4008 data_size = le32_to_cpu(ucode->data_size);
4009 init_size = le32_to_cpu(ucode->init_size);
4010 init_data_size = le32_to_cpu(ucode->init_data_size);
4011 boot_size = le32_to_cpu(ucode->boot_size);
4012
4013 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
4014 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
4015 inst_size);
4016 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
4017 data_size);
4018 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
4019 init_size);
4020 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
4021 init_data_size);
4022 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
4023 boot_size);
4024
4025 /* Verify size of file vs. image size info in file's header */
4026 if (ucode_raw->size < sizeof(*ucode) +
4027 inst_size + data_size + init_size +
4028 init_data_size + boot_size) {
4029
4030 IWL_DEBUG_INFO("uCode file size %d too small\n",
4031 (int)ucode_raw->size);
4032 ret = -EINVAL;
4033 goto err_release;
4034 }
4035
4036 /* Verify that uCode images will fit in card's SRAM */
4037 if (inst_size > priv->hw_params.max_inst_size) {
4038 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
4039 inst_size);
4040 ret = -EINVAL;
4041 goto err_release;
4042 }
4043
4044 if (data_size > priv->hw_params.max_data_size) {
4045 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
4046 data_size);
4047 ret = -EINVAL;
4048 goto err_release;
4049 }
4050 if (init_size > priv->hw_params.max_inst_size) {
4051 IWL_DEBUG_INFO
4052 ("uCode init instr len %d too large to fit in\n",
4053 init_size);
4054 ret = -EINVAL;
4055 goto err_release;
4056 }
4057 if (init_data_size > priv->hw_params.max_data_size) {
4058 IWL_DEBUG_INFO
4059 ("uCode init data len %d too large to fit in\n",
4060 init_data_size);
4061 ret = -EINVAL;
4062 goto err_release;
4063 }
4064 if (boot_size > priv->hw_params.max_bsm_size) {
4065 IWL_DEBUG_INFO
4066 ("uCode boot instr len %d too large to fit in\n",
4067 boot_size);
4068 ret = -EINVAL;
4069 goto err_release;
4070 }
4071
4072 /* Allocate ucode buffers for card's bus-master loading ... */
4073
4074 /* Runtime instructions and 2 copies of data:
4075 * 1) unmodified from disk
4076 * 2) backup cache for save/restore during power-downs */
4077 priv->ucode_code.len = inst_size;
4078 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
4079
4080 priv->ucode_data.len = data_size;
4081 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
4082
4083 priv->ucode_data_backup.len = data_size;
4084 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
4085
4086 /* Initialization instructions and data */
4087 if (init_size && init_data_size) {
4088 priv->ucode_init.len = init_size;
4089 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
4090
4091 priv->ucode_init_data.len = init_data_size;
4092 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
4093
4094 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
4095 goto err_pci_alloc;
4096 }
4097
4098 /* Bootstrap (instructions only, no data) */
4099 if (boot_size) {
4100 priv->ucode_boot.len = boot_size;
4101 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
4102
4103 if (!priv->ucode_boot.v_addr)
4104 goto err_pci_alloc;
4105 }
4106
4107 /* Copy images into buffers for card's bus-master reads ... */
4108
4109 /* Runtime instructions (first block of data in file) */
4110 src = &ucode->data[0];
4111 len = priv->ucode_code.len;
4112 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
4113 memcpy(priv->ucode_code.v_addr, src, len);
4114 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
4115 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
4116
4117 /* Runtime data (2nd block)
4118 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
4119 src = &ucode->data[inst_size];
4120 len = priv->ucode_data.len;
4121 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
4122 memcpy(priv->ucode_data.v_addr, src, len);
4123 memcpy(priv->ucode_data_backup.v_addr, src, len);
4124
4125 /* Initialization instructions (3rd block) */
4126 if (init_size) {
4127 src = &ucode->data[inst_size + data_size];
4128 len = priv->ucode_init.len;
4129 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
4130 len);
4131 memcpy(priv->ucode_init.v_addr, src, len);
4132 }
4133
4134 /* Initialization data (4th block) */
4135 if (init_data_size) {
4136 src = &ucode->data[inst_size + data_size + init_size];
4137 len = priv->ucode_init_data.len;
4138 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
4139 len);
4140 memcpy(priv->ucode_init_data.v_addr, src, len);
4141 }
4142
4143 /* Bootstrap instructions (5th block) */
4144 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
4145 len = priv->ucode_boot.len;
4146 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
4147 memcpy(priv->ucode_boot.v_addr, src, len);
4148
4149 /* We have our copies now, allow OS release its copies */
4150 release_firmware(ucode_raw);
4151 return 0;
4152
4153 err_pci_alloc:
4154 IWL_ERROR("failed to allocate pci memory\n");
4155 ret = -ENOMEM;
4156 iwl4965_dealloc_ucode_pci(priv);
4157
4158 err_release:
4159 release_firmware(ucode_raw);
4160
4161 error:
4162 return ret;
4163 }
4164
4165 /**
4166 * iwl4965_alive_start - called after REPLY_ALIVE notification received
4167 * from protocol/runtime uCode (initialization uCode's
4168 * Alive gets handled by iwl4965_init_alive_start()).
4169 */
4170 static void iwl4965_alive_start(struct iwl_priv *priv)
4171 {
4172 int ret = 0;
4173
4174 IWL_DEBUG_INFO("Runtime Alive received.\n");
4175
4176 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
4177 /* We had an error bringing up the hardware, so take it
4178 * all the way back down so we can try again */
4179 IWL_DEBUG_INFO("Alive failed.\n");
4180 goto restart;
4181 }
4182
4183 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
4184 * This is a paranoid check, because we would not have gotten the
4185 * "runtime" alive if code weren't properly loaded. */
4186 if (iwl_verify_ucode(priv)) {
4187 /* Runtime instruction load was bad;
4188 * take it all the way back down so we can try again */
4189 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
4190 goto restart;
4191 }
4192
4193 iwlcore_clear_stations_table(priv);
4194
4195 ret = priv->cfg->ops->lib->alive_notify(priv);
4196 if (ret) {
4197 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
4198 ret);
4199 goto restart;
4200 }
4201
4202 /* After the ALIVE response, we can send host commands to 4965 uCode */
4203 set_bit(STATUS_ALIVE, &priv->status);
4204
4205 /* Clear out the uCode error bit if it is set */
4206 clear_bit(STATUS_FW_ERROR, &priv->status);
4207
4208 if (iwl_is_rfkill(priv))
4209 return;
4210
4211 ieee80211_start_queues(priv->hw);
4212
4213 priv->active_rate = priv->rates_mask;
4214 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
4215
4216 if (iwl_is_associated(priv)) {
4217 struct iwl4965_rxon_cmd *active_rxon =
4218 (struct iwl4965_rxon_cmd *)(&priv->active_rxon);
4219
4220 memcpy(&priv->staging_rxon, &priv->active_rxon,
4221 sizeof(priv->staging_rxon));
4222 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4223 } else {
4224 /* Initialize our rx_config data */
4225 iwl4965_connection_init_rx_config(priv);
4226 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
4227 }
4228
4229 /* Configure Bluetooth device coexistence support */
4230 iwl4965_send_bt_config(priv);
4231
4232 /* Configure the adapter for unassociated operation */
4233 iwl4965_commit_rxon(priv);
4234
4235 /* At this point, the NIC is initialized and operational */
4236 priv->notif_missed_beacons = 0;
4237
4238 iwl4965_rf_kill_ct_config(priv);
4239
4240 iwl_leds_register(priv);
4241
4242 IWL_DEBUG_INFO("ALIVE processing complete.\n");
4243 set_bit(STATUS_READY, &priv->status);
4244 wake_up_interruptible(&priv->wait_command_queue);
4245
4246 if (priv->error_recovering)
4247 iwl4965_error_recovery(priv);
4248
4249 iwlcore_low_level_notify(priv, IWLCORE_START_EVT);
4250 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
4251 return;
4252
4253 restart:
4254 queue_work(priv->workqueue, &priv->restart);
4255 }
4256
4257 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv);
4258
4259 static void __iwl4965_down(struct iwl_priv *priv)
4260 {
4261 unsigned long flags;
4262 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
4263 struct ieee80211_conf *conf = NULL;
4264
4265 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
4266
4267 conf = ieee80211_get_hw_conf(priv->hw);
4268
4269 if (!exit_pending)
4270 set_bit(STATUS_EXIT_PENDING, &priv->status);
4271
4272 iwl_leds_unregister(priv);
4273
4274 iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT);
4275
4276 iwlcore_clear_stations_table(priv);
4277
4278 /* Unblock any waiting calls */
4279 wake_up_interruptible_all(&priv->wait_command_queue);
4280
4281 /* Wipe out the EXIT_PENDING status bit if we are not actually
4282 * exiting the module */
4283 if (!exit_pending)
4284 clear_bit(STATUS_EXIT_PENDING, &priv->status);
4285
4286 /* stop and reset the on-board processor */
4287 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
4288
4289 /* tell the device to stop sending interrupts */
4290 spin_lock_irqsave(&priv->lock, flags);
4291 iwl4965_disable_interrupts(priv);
4292 spin_unlock_irqrestore(&priv->lock, flags);
4293 iwl_synchronize_irq(priv);
4294
4295 if (priv->mac80211_registered)
4296 ieee80211_stop_queues(priv->hw);
4297
4298 /* If we have not previously called iwl4965_init() then
4299 * clear all bits but the RF Kill and SUSPEND bits and return */
4300 if (!iwl_is_init(priv)) {
4301 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
4302 STATUS_RF_KILL_HW |
4303 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
4304 STATUS_RF_KILL_SW |
4305 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
4306 STATUS_GEO_CONFIGURED |
4307 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
4308 STATUS_IN_SUSPEND;
4309 goto exit;
4310 }
4311
4312 /* ...otherwise clear out all the status bits but the RF Kill and
4313 * SUSPEND bits and continue taking the NIC down. */
4314 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
4315 STATUS_RF_KILL_HW |
4316 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
4317 STATUS_RF_KILL_SW |
4318 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
4319 STATUS_GEO_CONFIGURED |
4320 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
4321 STATUS_IN_SUSPEND |
4322 test_bit(STATUS_FW_ERROR, &priv->status) <<
4323 STATUS_FW_ERROR;
4324
4325 spin_lock_irqsave(&priv->lock, flags);
4326 iwl_clear_bit(priv, CSR_GP_CNTRL,
4327 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4328 spin_unlock_irqrestore(&priv->lock, flags);
4329
4330 iwl4965_hw_txq_ctx_stop(priv);
4331 iwl4965_hw_rxq_stop(priv);
4332
4333 spin_lock_irqsave(&priv->lock, flags);
4334 if (!iwl_grab_nic_access(priv)) {
4335 iwl_write_prph(priv, APMG_CLK_DIS_REG,
4336 APMG_CLK_VAL_DMA_CLK_RQT);
4337 iwl_release_nic_access(priv);
4338 }
4339 spin_unlock_irqrestore(&priv->lock, flags);
4340
4341 udelay(5);
4342
4343 iwl4965_hw_nic_stop_master(priv);
4344 iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
4345 iwl4965_hw_nic_reset(priv);
4346 priv->cfg->ops->lib->free_shared_mem(priv);
4347
4348 exit:
4349 memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
4350
4351 if (priv->ibss_beacon)
4352 dev_kfree_skb(priv->ibss_beacon);
4353 priv->ibss_beacon = NULL;
4354
4355 /* clear out any free frames */
4356 iwl4965_clear_free_frames(priv);
4357 }
4358
4359 static void iwl4965_down(struct iwl_priv *priv)
4360 {
4361 mutex_lock(&priv->mutex);
4362 __iwl4965_down(priv);
4363 mutex_unlock(&priv->mutex);
4364
4365 iwl4965_cancel_deferred_work(priv);
4366 }
4367
4368 #define MAX_HW_RESTARTS 5
4369
4370 static int __iwl4965_up(struct iwl_priv *priv)
4371 {
4372 int i;
4373 int ret;
4374
4375 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4376 IWL_WARNING("Exit pending; will not bring the NIC up\n");
4377 return -EIO;
4378 }
4379
4380 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
4381 IWL_WARNING("Radio disabled by SW RF kill (module "
4382 "parameter)\n");
4383 iwl_rfkill_set_hw_state(priv);
4384 return -ENODEV;
4385 }
4386
4387 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
4388 IWL_ERROR("ucode not available for device bringup\n");
4389 return -EIO;
4390 }
4391
4392 /* If platform's RF_KILL switch is NOT set to KILL */
4393 if (iwl_read32(priv, CSR_GP_CNTRL) &
4394 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
4395 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4396 else {
4397 set_bit(STATUS_RF_KILL_HW, &priv->status);
4398 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
4399 iwl_rfkill_set_hw_state(priv);
4400 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
4401 return -ENODEV;
4402 }
4403 }
4404
4405 iwl_rfkill_set_hw_state(priv);
4406 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
4407
4408 ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
4409 if (ret) {
4410 IWL_ERROR("Unable to allocate shared memory\n");
4411 return ret;
4412 }
4413
4414 ret = iwl_hw_nic_init(priv);
4415 if (ret) {
4416 IWL_ERROR("Unable to init nic\n");
4417 return ret;
4418 }
4419
4420 /* make sure rfkill handshake bits are cleared */
4421 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
4422 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
4423 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4424
4425 /* clear (again), then enable host interrupts */
4426 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
4427 iwl4965_enable_interrupts(priv);
4428
4429 /* really make sure rfkill handshake bits are cleared */
4430 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
4431 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
4432
4433 /* Copy original ucode data image from disk into backup cache.
4434 * This will be used to initialize the on-board processor's
4435 * data SRAM for a clean start when the runtime program first loads. */
4436 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
4437 priv->ucode_data.len);
4438
4439 /* We return success when we resume from suspend and rf_kill is on. */
4440 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
4441 return 0;
4442
4443 for (i = 0; i < MAX_HW_RESTARTS; i++) {
4444
4445 iwlcore_clear_stations_table(priv);
4446
4447 /* load bootstrap state machine,
4448 * load bootstrap program into processor's memory,
4449 * prepare to load the "initialize" uCode */
4450 ret = priv->cfg->ops->lib->load_ucode(priv);
4451
4452 if (ret) {
4453 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
4454 continue;
4455 }
4456
4457 /* start card; "initialize" will load runtime ucode */
4458 iwl4965_nic_start(priv);
4459
4460 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
4461
4462 return 0;
4463 }
4464
4465 set_bit(STATUS_EXIT_PENDING, &priv->status);
4466 __iwl4965_down(priv);
4467
4468 /* tried to restart and config the device for as long as our
4469 * patience could withstand */
4470 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
4471 return -EIO;
4472 }
4473
4474
4475 /*****************************************************************************
4476 *
4477 * Workqueue callbacks
4478 *
4479 *****************************************************************************/
4480
4481 static void iwl4965_bg_init_alive_start(struct work_struct *data)
4482 {
4483 struct iwl_priv *priv =
4484 container_of(data, struct iwl_priv, init_alive_start.work);
4485
4486 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4487 return;
4488
4489 mutex_lock(&priv->mutex);
4490 priv->cfg->ops->lib->init_alive_start(priv);
4491 mutex_unlock(&priv->mutex);
4492 }
4493
4494 static void iwl4965_bg_alive_start(struct work_struct *data)
4495 {
4496 struct iwl_priv *priv =
4497 container_of(data, struct iwl_priv, alive_start.work);
4498
4499 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4500 return;
4501
4502 mutex_lock(&priv->mutex);
4503 iwl4965_alive_start(priv);
4504 mutex_unlock(&priv->mutex);
4505 }
4506
4507 static void iwl4965_bg_rf_kill(struct work_struct *work)
4508 {
4509 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
4510
4511 wake_up_interruptible(&priv->wait_command_queue);
4512
4513 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4514 return;
4515
4516 mutex_lock(&priv->mutex);
4517
4518 if (!iwl_is_rfkill(priv)) {
4519 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
4520 "HW and/or SW RF Kill no longer active, restarting "
4521 "device\n");
4522 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
4523 queue_work(priv->workqueue, &priv->restart);
4524 } else {
4525 /* make sure mac80211 stop sending Tx frame */
4526 if (priv->mac80211_registered)
4527 ieee80211_stop_queues(priv->hw);
4528
4529 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
4530 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
4531 "disabled by SW switch\n");
4532 else
4533 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
4534 "Kill switch must be turned off for "
4535 "wireless networking to work.\n");
4536 }
4537 iwl_rfkill_set_hw_state(priv);
4538
4539 mutex_unlock(&priv->mutex);
4540 }
4541
4542 static void iwl4965_bg_set_monitor(struct work_struct *work)
4543 {
4544 struct iwl_priv *priv = container_of(work,
4545 struct iwl_priv, set_monitor);
4546
4547 IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
4548
4549 mutex_lock(&priv->mutex);
4550
4551 if (!iwl_is_ready(priv))
4552 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
4553 else
4554 if (iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR) != 0)
4555 IWL_ERROR("iwl4965_set_mode() failed\n");
4556
4557 mutex_unlock(&priv->mutex);
4558 }
4559
4560 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
4561
4562 static void iwl4965_bg_scan_check(struct work_struct *data)
4563 {
4564 struct iwl_priv *priv =
4565 container_of(data, struct iwl_priv, scan_check.work);
4566
4567 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4568 return;
4569
4570 mutex_lock(&priv->mutex);
4571 if (test_bit(STATUS_SCANNING, &priv->status) ||
4572 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
4573 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
4574 "Scan completion watchdog resetting adapter (%dms)\n",
4575 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
4576
4577 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
4578 iwl4965_send_scan_abort(priv);
4579 }
4580 mutex_unlock(&priv->mutex);
4581 }
4582
4583 static void iwl4965_bg_request_scan(struct work_struct *data)
4584 {
4585 struct iwl_priv *priv =
4586 container_of(data, struct iwl_priv, request_scan);
4587 struct iwl_host_cmd cmd = {
4588 .id = REPLY_SCAN_CMD,
4589 .len = sizeof(struct iwl4965_scan_cmd),
4590 .meta.flags = CMD_SIZE_HUGE,
4591 };
4592 struct iwl4965_scan_cmd *scan;
4593 struct ieee80211_conf *conf = NULL;
4594 u16 cmd_len;
4595 enum ieee80211_band band;
4596 u8 direct_mask;
4597 int ret = 0;
4598
4599 conf = ieee80211_get_hw_conf(priv->hw);
4600
4601 mutex_lock(&priv->mutex);
4602
4603 if (!iwl_is_ready(priv)) {
4604 IWL_WARNING("request scan called when driver not ready.\n");
4605 goto done;
4606 }
4607
4608 /* Make sure the scan wasn't cancelled before this queued work
4609 * was given the chance to run... */
4610 if (!test_bit(STATUS_SCANNING, &priv->status))
4611 goto done;
4612
4613 /* This should never be called or scheduled if there is currently
4614 * a scan active in the hardware. */
4615 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
4616 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
4617 "Ignoring second request.\n");
4618 ret = -EIO;
4619 goto done;
4620 }
4621
4622 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4623 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
4624 goto done;
4625 }
4626
4627 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
4628 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
4629 goto done;
4630 }
4631
4632 if (iwl_is_rfkill(priv)) {
4633 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
4634 goto done;
4635 }
4636
4637 if (!test_bit(STATUS_READY, &priv->status)) {
4638 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
4639 goto done;
4640 }
4641
4642 if (!priv->scan_bands) {
4643 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
4644 goto done;
4645 }
4646
4647 if (!priv->scan) {
4648 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
4649 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
4650 if (!priv->scan) {
4651 ret = -ENOMEM;
4652 goto done;
4653 }
4654 }
4655 scan = priv->scan;
4656 memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
4657
4658 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
4659 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
4660
4661 if (iwl_is_associated(priv)) {
4662 u16 interval = 0;
4663 u32 extra;
4664 u32 suspend_time = 100;
4665 u32 scan_suspend_time = 100;
4666 unsigned long flags;
4667
4668 IWL_DEBUG_INFO("Scanning while associated...\n");
4669
4670 spin_lock_irqsave(&priv->lock, flags);
4671 interval = priv->beacon_int;
4672 spin_unlock_irqrestore(&priv->lock, flags);
4673
4674 scan->suspend_time = 0;
4675 scan->max_out_time = cpu_to_le32(200 * 1024);
4676 if (!interval)
4677 interval = suspend_time;
4678
4679 extra = (suspend_time / interval) << 22;
4680 scan_suspend_time = (extra |
4681 ((suspend_time % interval) * 1024));
4682 scan->suspend_time = cpu_to_le32(scan_suspend_time);
4683 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
4684 scan_suspend_time, interval);
4685 }
4686
4687 /* We should add the ability for user to lock to PASSIVE ONLY */
4688 if (priv->one_direct_scan) {
4689 IWL_DEBUG_SCAN
4690 ("Kicking off one direct scan for '%s'\n",
4691 iwl4965_escape_essid(priv->direct_ssid,
4692 priv->direct_ssid_len));
4693 scan->direct_scan[0].id = WLAN_EID_SSID;
4694 scan->direct_scan[0].len = priv->direct_ssid_len;
4695 memcpy(scan->direct_scan[0].ssid,
4696 priv->direct_ssid, priv->direct_ssid_len);
4697 direct_mask = 1;
4698 } else if (!iwl_is_associated(priv) && priv->essid_len) {
4699 IWL_DEBUG_SCAN
4700 ("Kicking off one direct scan for '%s' when not associated\n",
4701 iwl4965_escape_essid(priv->essid, priv->essid_len));
4702 scan->direct_scan[0].id = WLAN_EID_SSID;
4703 scan->direct_scan[0].len = priv->essid_len;
4704 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
4705 direct_mask = 1;
4706 } else {
4707 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
4708 direct_mask = 0;
4709 }
4710
4711 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
4712 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
4713 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
4714
4715
4716 switch (priv->scan_bands) {
4717 case 2:
4718 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
4719 scan->tx_cmd.rate_n_flags =
4720 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
4721 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
4722
4723 scan->good_CRC_th = 0;
4724 band = IEEE80211_BAND_2GHZ;
4725 break;
4726
4727 case 1:
4728 scan->tx_cmd.rate_n_flags =
4729 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
4730 RATE_MCS_ANT_B_MSK);
4731 scan->good_CRC_th = IWL_GOOD_CRC_TH;
4732 band = IEEE80211_BAND_5GHZ;
4733 break;
4734
4735 default:
4736 IWL_WARNING("Invalid scan band count\n");
4737 goto done;
4738 }
4739
4740 /* We don't build a direct scan probe request; the uCode will do
4741 * that based on the direct_mask added to each channel entry */
4742 cmd_len = iwl4965_fill_probe_req(priv, band,
4743 (struct ieee80211_mgmt *)scan->data,
4744 IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
4745
4746 scan->tx_cmd.len = cpu_to_le16(cmd_len);
4747 /* select Rx chains */
4748
4749 /* Force use of chains B and C (0x6) for scan Rx.
4750 * Avoid A (0x1) because of its off-channel reception on A-band.
4751 * MIMO is not used here, but value is required to make uCode happy. */
4752 scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
4753 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
4754 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
4755 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
4756
4757 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
4758 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
4759
4760 if (direct_mask)
4761 scan->channel_count =
4762 iwl4965_get_channels_for_scan(
4763 priv, band, 1, /* active */
4764 direct_mask,
4765 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
4766 else
4767 scan->channel_count =
4768 iwl4965_get_channels_for_scan(
4769 priv, band, 0, /* passive */
4770 direct_mask,
4771 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
4772
4773 scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK |
4774 RXON_FILTER_BCON_AWARE_MSK);
4775 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
4776 scan->channel_count * sizeof(struct iwl4965_scan_channel);
4777 cmd.data = scan;
4778 scan->len = cpu_to_le16(cmd.len);
4779
4780 set_bit(STATUS_SCAN_HW, &priv->status);
4781 ret = iwl_send_cmd_sync(priv, &cmd);
4782 if (ret)
4783 goto done;
4784
4785 queue_delayed_work(priv->workqueue, &priv->scan_check,
4786 IWL_SCAN_CHECK_WATCHDOG);
4787
4788 mutex_unlock(&priv->mutex);
4789 return;
4790
4791 done:
4792 /* inform mac80211 scan aborted */
4793 queue_work(priv->workqueue, &priv->scan_completed);
4794 mutex_unlock(&priv->mutex);
4795 }
4796
4797 static void iwl4965_bg_up(struct work_struct *data)
4798 {
4799 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
4800
4801 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4802 return;
4803
4804 mutex_lock(&priv->mutex);
4805 __iwl4965_up(priv);
4806 mutex_unlock(&priv->mutex);
4807 }
4808
4809 static void iwl4965_bg_restart(struct work_struct *data)
4810 {
4811 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
4812
4813 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4814 return;
4815
4816 iwl4965_down(priv);
4817 queue_work(priv->workqueue, &priv->up);
4818 }
4819
4820 static void iwl4965_bg_rx_replenish(struct work_struct *data)
4821 {
4822 struct iwl_priv *priv =
4823 container_of(data, struct iwl_priv, rx_replenish);
4824
4825 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4826 return;
4827
4828 mutex_lock(&priv->mutex);
4829 iwl_rx_replenish(priv);
4830 mutex_unlock(&priv->mutex);
4831 }
4832
4833 #define IWL_DELAY_NEXT_SCAN (HZ*2)
4834
4835 static void iwl4965_post_associate(struct iwl_priv *priv)
4836 {
4837 struct ieee80211_conf *conf = NULL;
4838 int ret = 0;
4839 DECLARE_MAC_BUF(mac);
4840
4841 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
4842 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
4843 return;
4844 }
4845
4846 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
4847 priv->assoc_id,
4848 print_mac(mac, priv->active_rxon.bssid_addr));
4849
4850
4851 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4852 return;
4853
4854
4855 if (!priv->vif || !priv->is_open)
4856 return;
4857
4858 iwl4965_scan_cancel_timeout(priv, 200);
4859
4860 conf = ieee80211_get_hw_conf(priv->hw);
4861
4862 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4863 iwl4965_commit_rxon(priv);
4864
4865 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
4866 iwl4965_setup_rxon_timing(priv);
4867 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
4868 sizeof(priv->rxon_timing), &priv->rxon_timing);
4869 if (ret)
4870 IWL_WARNING("REPLY_RXON_TIMING failed - "
4871 "Attempting to continue.\n");
4872
4873 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
4874
4875 #ifdef CONFIG_IWL4965_HT
4876 if (priv->current_ht_config.is_ht)
4877 iwl_set_rxon_ht(priv, &priv->current_ht_config);
4878 #endif /* CONFIG_IWL4965_HT*/
4879 iwl_set_rxon_chain(priv);
4880 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
4881
4882 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
4883 priv->assoc_id, priv->beacon_int);
4884
4885 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
4886 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
4887 else
4888 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
4889
4890 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
4891 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
4892 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
4893 else
4894 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
4895
4896 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
4897 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
4898
4899 }
4900
4901 iwl4965_commit_rxon(priv);
4902
4903 switch (priv->iw_mode) {
4904 case IEEE80211_IF_TYPE_STA:
4905 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
4906 break;
4907
4908 case IEEE80211_IF_TYPE_IBSS:
4909
4910 /* clear out the station table */
4911 iwlcore_clear_stations_table(priv);
4912
4913 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
4914 iwl4965_rxon_add_station(priv, priv->bssid, 0);
4915 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
4916 iwl4965_send_beacon_cmd(priv);
4917
4918 break;
4919
4920 default:
4921 IWL_ERROR("%s Should not be called in %d mode\n",
4922 __FUNCTION__, priv->iw_mode);
4923 break;
4924 }
4925
4926 iwl4965_sequence_reset(priv);
4927
4928 /* Enable Rx differential gain and sensitivity calibrations */
4929 iwl_chain_noise_reset(priv);
4930 priv->start_calib = 1;
4931
4932 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
4933 priv->assoc_station_added = 1;
4934
4935 iwl4965_activate_qos(priv, 0);
4936
4937 iwl_power_update_mode(priv, 0);
4938 /* we have just associated, don't start scan too early */
4939 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
4940 }
4941
4942
4943 static void iwl4965_bg_post_associate(struct work_struct *data)
4944 {
4945 struct iwl_priv *priv = container_of(data, struct iwl_priv,
4946 post_associate.work);
4947
4948 mutex_lock(&priv->mutex);
4949 iwl4965_post_associate(priv);
4950 mutex_unlock(&priv->mutex);
4951
4952 }
4953
4954 static void iwl4965_bg_abort_scan(struct work_struct *work)
4955 {
4956 struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
4957
4958 if (!iwl_is_ready(priv))
4959 return;
4960
4961 mutex_lock(&priv->mutex);
4962
4963 set_bit(STATUS_SCAN_ABORTING, &priv->status);
4964 iwl4965_send_scan_abort(priv);
4965
4966 mutex_unlock(&priv->mutex);
4967 }
4968
4969 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
4970
4971 static void iwl4965_bg_scan_completed(struct work_struct *work)
4972 {
4973 struct iwl_priv *priv =
4974 container_of(work, struct iwl_priv, scan_completed);
4975
4976 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
4977
4978 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4979 return;
4980
4981 if (test_bit(STATUS_CONF_PENDING, &priv->status))
4982 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
4983
4984 ieee80211_scan_completed(priv->hw);
4985
4986 /* Since setting the TXPOWER may have been deferred while
4987 * performing the scan, fire one off */
4988 mutex_lock(&priv->mutex);
4989 iwl4965_hw_reg_send_txpower(priv);
4990 mutex_unlock(&priv->mutex);
4991 }
4992
4993 /*****************************************************************************
4994 *
4995 * mac80211 entry point functions
4996 *
4997 *****************************************************************************/
4998
4999 #define UCODE_READY_TIMEOUT (2 * HZ)
5000
5001 static int iwl4965_mac_start(struct ieee80211_hw *hw)
5002 {
5003 struct iwl_priv *priv = hw->priv;
5004 int ret;
5005
5006 IWL_DEBUG_MAC80211("enter\n");
5007
5008 if (pci_enable_device(priv->pci_dev)) {
5009 IWL_ERROR("Fail to pci_enable_device\n");
5010 return -ENODEV;
5011 }
5012 pci_restore_state(priv->pci_dev);
5013 pci_enable_msi(priv->pci_dev);
5014
5015 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
5016 DRV_NAME, priv);
5017 if (ret) {
5018 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
5019 goto out_disable_msi;
5020 }
5021
5022 /* we should be verifying the device is ready to be opened */
5023 mutex_lock(&priv->mutex);
5024
5025 memset(&priv->staging_rxon, 0, sizeof(struct iwl4965_rxon_cmd));
5026 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
5027 * ucode filename and max sizes are card-specific. */
5028
5029 if (!priv->ucode_code.len) {
5030 ret = iwl4965_read_ucode(priv);
5031 if (ret) {
5032 IWL_ERROR("Could not read microcode: %d\n", ret);
5033 mutex_unlock(&priv->mutex);
5034 goto out_release_irq;
5035 }
5036 }
5037
5038 ret = __iwl4965_up(priv);
5039
5040 mutex_unlock(&priv->mutex);
5041
5042 if (ret)
5043 goto out_release_irq;
5044
5045 IWL_DEBUG_INFO("Start UP work done.\n");
5046
5047 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
5048 return 0;
5049
5050 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
5051 * mac80211 will not be run successfully. */
5052 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
5053 test_bit(STATUS_READY, &priv->status),
5054 UCODE_READY_TIMEOUT);
5055 if (!ret) {
5056 if (!test_bit(STATUS_READY, &priv->status)) {
5057 IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
5058 jiffies_to_msecs(UCODE_READY_TIMEOUT));
5059 ret = -ETIMEDOUT;
5060 goto out_release_irq;
5061 }
5062 }
5063
5064 priv->is_open = 1;
5065 IWL_DEBUG_MAC80211("leave\n");
5066 return 0;
5067
5068 out_release_irq:
5069 free_irq(priv->pci_dev->irq, priv);
5070 out_disable_msi:
5071 pci_disable_msi(priv->pci_dev);
5072 pci_disable_device(priv->pci_dev);
5073 priv->is_open = 0;
5074 IWL_DEBUG_MAC80211("leave - failed\n");
5075 return ret;
5076 }
5077
5078 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
5079 {
5080 struct iwl_priv *priv = hw->priv;
5081
5082 IWL_DEBUG_MAC80211("enter\n");
5083
5084 if (!priv->is_open) {
5085 IWL_DEBUG_MAC80211("leave - skip\n");
5086 return;
5087 }
5088
5089 priv->is_open = 0;
5090
5091 if (iwl_is_ready_rf(priv)) {
5092 /* stop mac, cancel any scan request and clear
5093 * RXON_FILTER_ASSOC_MSK BIT
5094 */
5095 mutex_lock(&priv->mutex);
5096 iwl4965_scan_cancel_timeout(priv, 100);
5097 cancel_delayed_work(&priv->post_associate);
5098 mutex_unlock(&priv->mutex);
5099 }
5100
5101 iwl4965_down(priv);
5102
5103 flush_workqueue(priv->workqueue);
5104 free_irq(priv->pci_dev->irq, priv);
5105 pci_disable_msi(priv->pci_dev);
5106 pci_save_state(priv->pci_dev);
5107 pci_disable_device(priv->pci_dev);
5108
5109 IWL_DEBUG_MAC80211("leave\n");
5110 }
5111
5112 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
5113 struct ieee80211_tx_control *ctl)
5114 {
5115 struct iwl_priv *priv = hw->priv;
5116
5117 IWL_DEBUG_MAC80211("enter\n");
5118
5119 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
5120 IWL_DEBUG_MAC80211("leave - monitor\n");
5121 return -1;
5122 }
5123
5124 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
5125 ctl->tx_rate->bitrate);
5126
5127 if (iwl4965_tx_skb(priv, skb, ctl))
5128 dev_kfree_skb_any(skb);
5129
5130 IWL_DEBUG_MAC80211("leave\n");
5131 return 0;
5132 }
5133
5134 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
5135 struct ieee80211_if_init_conf *conf)
5136 {
5137 struct iwl_priv *priv = hw->priv;
5138 unsigned long flags;
5139 DECLARE_MAC_BUF(mac);
5140
5141 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
5142
5143 if (priv->vif) {
5144 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
5145 return -EOPNOTSUPP;
5146 }
5147
5148 spin_lock_irqsave(&priv->lock, flags);
5149 priv->vif = conf->vif;
5150
5151 spin_unlock_irqrestore(&priv->lock, flags);
5152
5153 mutex_lock(&priv->mutex);
5154
5155 if (conf->mac_addr) {
5156 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
5157 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
5158 }
5159
5160 if (iwl_is_ready(priv))
5161 iwl4965_set_mode(priv, conf->type);
5162
5163 mutex_unlock(&priv->mutex);
5164
5165 IWL_DEBUG_MAC80211("leave\n");
5166 return 0;
5167 }
5168
5169 /**
5170 * iwl4965_mac_config - mac80211 config callback
5171 *
5172 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
5173 * be set inappropriately and the driver currently sets the hardware up to
5174 * use it whenever needed.
5175 */
5176 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
5177 {
5178 struct iwl_priv *priv = hw->priv;
5179 const struct iwl_channel_info *ch_info;
5180 unsigned long flags;
5181 int ret = 0;
5182
5183 mutex_lock(&priv->mutex);
5184 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
5185
5186 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
5187
5188 if (!iwl_is_ready(priv)) {
5189 IWL_DEBUG_MAC80211("leave - not ready\n");
5190 ret = -EIO;
5191 goto out;
5192 }
5193
5194 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
5195 test_bit(STATUS_SCANNING, &priv->status))) {
5196 IWL_DEBUG_MAC80211("leave - scanning\n");
5197 set_bit(STATUS_CONF_PENDING, &priv->status);
5198 mutex_unlock(&priv->mutex);
5199 return 0;
5200 }
5201
5202 spin_lock_irqsave(&priv->lock, flags);
5203
5204 ch_info = iwl_get_channel_info(priv, conf->channel->band,
5205 ieee80211_frequency_to_channel(conf->channel->center_freq));
5206 if (!is_channel_valid(ch_info)) {
5207 IWL_DEBUG_MAC80211("leave - invalid channel\n");
5208 spin_unlock_irqrestore(&priv->lock, flags);
5209 ret = -EINVAL;
5210 goto out;
5211 }
5212
5213 #ifdef CONFIG_IWL4965_HT
5214 /* if we are switching from ht to 2.4 clear flags
5215 * from any ht related info since 2.4 does not
5216 * support ht */
5217 if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
5218 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
5219 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
5220 #endif
5221 )
5222 priv->staging_rxon.flags = 0;
5223 #endif /* CONFIG_IWL4965_HT */
5224
5225 iwl_set_rxon_channel(priv, conf->channel->band,
5226 ieee80211_frequency_to_channel(conf->channel->center_freq));
5227
5228 iwl4965_set_flags_for_phymode(priv, conf->channel->band);
5229
5230 /* The list of supported rates and rate mask can be different
5231 * for each band; since the band may have changed, reset
5232 * the rate mask to what mac80211 lists */
5233 iwl4965_set_rate(priv);
5234
5235 spin_unlock_irqrestore(&priv->lock, flags);
5236
5237 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
5238 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
5239 iwl4965_hw_channel_switch(priv, conf->channel);
5240 goto out;
5241 }
5242 #endif
5243
5244 if (priv->cfg->ops->lib->radio_kill_sw)
5245 priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled);
5246
5247 if (!conf->radio_enabled) {
5248 IWL_DEBUG_MAC80211("leave - radio disabled\n");
5249 goto out;
5250 }
5251
5252 if (iwl_is_rfkill(priv)) {
5253 IWL_DEBUG_MAC80211("leave - RF kill\n");
5254 ret = -EIO;
5255 goto out;
5256 }
5257
5258 iwl4965_set_rate(priv);
5259
5260 if (memcmp(&priv->active_rxon,
5261 &priv->staging_rxon, sizeof(priv->staging_rxon)))
5262 iwl4965_commit_rxon(priv);
5263 else
5264 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
5265
5266 IWL_DEBUG_MAC80211("leave\n");
5267
5268 out:
5269 clear_bit(STATUS_CONF_PENDING, &priv->status);
5270 mutex_unlock(&priv->mutex);
5271 return ret;
5272 }
5273
5274 static void iwl4965_config_ap(struct iwl_priv *priv)
5275 {
5276 int ret = 0;
5277
5278 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5279 return;
5280
5281 /* The following should be done only at AP bring up */
5282 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
5283
5284 /* RXON - unassoc (to set timing command) */
5285 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5286 iwl4965_commit_rxon(priv);
5287
5288 /* RXON Timing */
5289 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
5290 iwl4965_setup_rxon_timing(priv);
5291 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
5292 sizeof(priv->rxon_timing), &priv->rxon_timing);
5293 if (ret)
5294 IWL_WARNING("REPLY_RXON_TIMING failed - "
5295 "Attempting to continue.\n");
5296
5297 iwl_set_rxon_chain(priv);
5298
5299 /* FIXME: what should be the assoc_id for AP? */
5300 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
5301 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
5302 priv->staging_rxon.flags |=
5303 RXON_FLG_SHORT_PREAMBLE_MSK;
5304 else
5305 priv->staging_rxon.flags &=
5306 ~RXON_FLG_SHORT_PREAMBLE_MSK;
5307
5308 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
5309 if (priv->assoc_capability &
5310 WLAN_CAPABILITY_SHORT_SLOT_TIME)
5311 priv->staging_rxon.flags |=
5312 RXON_FLG_SHORT_SLOT_MSK;
5313 else
5314 priv->staging_rxon.flags &=
5315 ~RXON_FLG_SHORT_SLOT_MSK;
5316
5317 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
5318 priv->staging_rxon.flags &=
5319 ~RXON_FLG_SHORT_SLOT_MSK;
5320 }
5321 /* restore RXON assoc */
5322 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
5323 iwl4965_commit_rxon(priv);
5324 iwl4965_activate_qos(priv, 1);
5325 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
5326 }
5327 iwl4965_send_beacon_cmd(priv);
5328
5329 /* FIXME - we need to add code here to detect a totally new
5330 * configuration, reset the AP, unassoc, rxon timing, assoc,
5331 * clear sta table, add BCAST sta... */
5332 }
5333
5334 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
5335 struct ieee80211_vif *vif,
5336 struct ieee80211_if_conf *conf)
5337 {
5338 struct iwl_priv *priv = hw->priv;
5339 DECLARE_MAC_BUF(mac);
5340 unsigned long flags;
5341 int rc;
5342
5343 if (conf == NULL)
5344 return -EIO;
5345
5346 if (priv->vif != vif) {
5347 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
5348 return 0;
5349 }
5350
5351 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
5352 (!conf->beacon || !conf->ssid_len)) {
5353 IWL_DEBUG_MAC80211
5354 ("Leaving in AP mode because HostAPD is not ready.\n");
5355 return 0;
5356 }
5357
5358 if (!iwl_is_alive(priv))
5359 return -EAGAIN;
5360
5361 mutex_lock(&priv->mutex);
5362
5363 if (conf->bssid)
5364 IWL_DEBUG_MAC80211("bssid: %s\n",
5365 print_mac(mac, conf->bssid));
5366
5367 /*
5368 * very dubious code was here; the probe filtering flag is never set:
5369 *
5370 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
5371 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
5372 */
5373
5374 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
5375 if (!conf->bssid) {
5376 conf->bssid = priv->mac_addr;
5377 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
5378 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
5379 print_mac(mac, conf->bssid));
5380 }
5381 if (priv->ibss_beacon)
5382 dev_kfree_skb(priv->ibss_beacon);
5383
5384 priv->ibss_beacon = conf->beacon;
5385 }
5386
5387 if (iwl_is_rfkill(priv))
5388 goto done;
5389
5390 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
5391 !is_multicast_ether_addr(conf->bssid)) {
5392 /* If there is currently a HW scan going on in the background
5393 * then we need to cancel it else the RXON below will fail. */
5394 if (iwl4965_scan_cancel_timeout(priv, 100)) {
5395 IWL_WARNING("Aborted scan still in progress "
5396 "after 100ms\n");
5397 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
5398 mutex_unlock(&priv->mutex);
5399 return -EAGAIN;
5400 }
5401 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
5402
5403 /* TODO: Audit driver for usage of these members and see
5404 * if mac80211 deprecates them (priv->bssid looks like it
5405 * shouldn't be there, but I haven't scanned the IBSS code
5406 * to verify) - jpk */
5407 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
5408
5409 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
5410 iwl4965_config_ap(priv);
5411 else {
5412 rc = iwl4965_commit_rxon(priv);
5413 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
5414 iwl4965_rxon_add_station(
5415 priv, priv->active_rxon.bssid_addr, 1);
5416 }
5417
5418 } else {
5419 iwl4965_scan_cancel_timeout(priv, 100);
5420 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5421 iwl4965_commit_rxon(priv);
5422 }
5423
5424 done:
5425 spin_lock_irqsave(&priv->lock, flags);
5426 if (!conf->ssid_len)
5427 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
5428 else
5429 memcpy(priv->essid, conf->ssid, conf->ssid_len);
5430
5431 priv->essid_len = conf->ssid_len;
5432 spin_unlock_irqrestore(&priv->lock, flags);
5433
5434 IWL_DEBUG_MAC80211("leave\n");
5435 mutex_unlock(&priv->mutex);
5436
5437 return 0;
5438 }
5439
5440 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
5441 unsigned int changed_flags,
5442 unsigned int *total_flags,
5443 int mc_count, struct dev_addr_list *mc_list)
5444 {
5445 /*
5446 * XXX: dummy
5447 * see also iwl4965_connection_init_rx_config
5448 */
5449 struct iwl_priv *priv = hw->priv;
5450 int new_flags = 0;
5451 if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
5452 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
5453 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
5454 IEEE80211_IF_TYPE_MNTR,
5455 changed_flags, *total_flags);
5456 /* queue work 'cuz mac80211 is holding a lock which
5457 * prevents us from issuing (synchronous) f/w cmds */
5458 queue_work(priv->workqueue, &priv->set_monitor);
5459 new_flags &= FIF_PROMISC_IN_BSS |
5460 FIF_OTHER_BSS |
5461 FIF_ALLMULTI;
5462 }
5463 }
5464 *total_flags = new_flags;
5465 }
5466
5467 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
5468 struct ieee80211_if_init_conf *conf)
5469 {
5470 struct iwl_priv *priv = hw->priv;
5471
5472 IWL_DEBUG_MAC80211("enter\n");
5473
5474 mutex_lock(&priv->mutex);
5475
5476 if (iwl_is_ready_rf(priv)) {
5477 iwl4965_scan_cancel_timeout(priv, 100);
5478 cancel_delayed_work(&priv->post_associate);
5479 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5480 iwl4965_commit_rxon(priv);
5481 }
5482 if (priv->vif == conf->vif) {
5483 priv->vif = NULL;
5484 memset(priv->bssid, 0, ETH_ALEN);
5485 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
5486 priv->essid_len = 0;
5487 }
5488 mutex_unlock(&priv->mutex);
5489
5490 IWL_DEBUG_MAC80211("leave\n");
5491
5492 }
5493
5494 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
5495 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
5496 struct ieee80211_vif *vif,
5497 struct ieee80211_bss_conf *bss_conf,
5498 u32 changes)
5499 {
5500 struct iwl_priv *priv = hw->priv;
5501
5502 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
5503
5504 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
5505 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
5506 bss_conf->use_short_preamble);
5507 if (bss_conf->use_short_preamble)
5508 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
5509 else
5510 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
5511 }
5512
5513 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
5514 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
5515 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
5516 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
5517 else
5518 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
5519 }
5520
5521 if (changes & BSS_CHANGED_HT) {
5522 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
5523 iwl4965_ht_conf(priv, bss_conf);
5524 iwl_set_rxon_chain(priv);
5525 }
5526
5527 if (changes & BSS_CHANGED_ASSOC) {
5528 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
5529 /* This should never happen as this function should
5530 * never be called from interrupt context. */
5531 if (WARN_ON_ONCE(in_interrupt()))
5532 return;
5533 if (bss_conf->assoc) {
5534 priv->assoc_id = bss_conf->aid;
5535 priv->beacon_int = bss_conf->beacon_int;
5536 priv->timestamp = bss_conf->timestamp;
5537 priv->assoc_capability = bss_conf->assoc_capability;
5538 priv->next_scan_jiffies = jiffies +
5539 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
5540 mutex_lock(&priv->mutex);
5541 iwl4965_post_associate(priv);
5542 mutex_unlock(&priv->mutex);
5543 } else {
5544 priv->assoc_id = 0;
5545 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
5546 }
5547 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
5548 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
5549 iwl_send_rxon_assoc(priv);
5550 }
5551
5552 }
5553
5554 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
5555 {
5556 int rc = 0;
5557 unsigned long flags;
5558 struct iwl_priv *priv = hw->priv;
5559
5560 IWL_DEBUG_MAC80211("enter\n");
5561
5562 mutex_lock(&priv->mutex);
5563 spin_lock_irqsave(&priv->lock, flags);
5564
5565 if (!iwl_is_ready_rf(priv)) {
5566 rc = -EIO;
5567 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
5568 goto out_unlock;
5569 }
5570
5571 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
5572 rc = -EIO;
5573 IWL_ERROR("ERROR: APs don't scan\n");
5574 goto out_unlock;
5575 }
5576
5577 /* we don't schedule scan within next_scan_jiffies period */
5578 if (priv->next_scan_jiffies &&
5579 time_after(priv->next_scan_jiffies, jiffies)) {
5580 rc = -EAGAIN;
5581 goto out_unlock;
5582 }
5583 /* if we just finished scan ask for delay */
5584 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
5585 IWL_DELAY_NEXT_SCAN, jiffies)) {
5586 rc = -EAGAIN;
5587 goto out_unlock;
5588 }
5589 if (len) {
5590 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
5591 iwl4965_escape_essid(ssid, len), (int)len);
5592
5593 priv->one_direct_scan = 1;
5594 priv->direct_ssid_len = (u8)
5595 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
5596 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
5597 } else
5598 priv->one_direct_scan = 0;
5599
5600 rc = iwl4965_scan_initiate(priv);
5601
5602 IWL_DEBUG_MAC80211("leave\n");
5603
5604 out_unlock:
5605 spin_unlock_irqrestore(&priv->lock, flags);
5606 mutex_unlock(&priv->mutex);
5607
5608 return rc;
5609 }
5610
5611 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
5612 struct ieee80211_key_conf *keyconf, const u8 *addr,
5613 u32 iv32, u16 *phase1key)
5614 {
5615 struct iwl_priv *priv = hw->priv;
5616 u8 sta_id = IWL_INVALID_STATION;
5617 unsigned long flags;
5618 __le16 key_flags = 0;
5619 int i;
5620 DECLARE_MAC_BUF(mac);
5621
5622 IWL_DEBUG_MAC80211("enter\n");
5623
5624 sta_id = iwl_find_station(priv, addr);
5625 if (sta_id == IWL_INVALID_STATION) {
5626 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
5627 print_mac(mac, addr));
5628 return;
5629 }
5630
5631 iwl4965_scan_cancel_timeout(priv, 100);
5632
5633 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
5634 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
5635 key_flags &= ~STA_KEY_FLG_INVALID;
5636
5637 if (sta_id == priv->hw_params.bcast_sta_id)
5638 key_flags |= STA_KEY_MULTICAST_MSK;
5639
5640 spin_lock_irqsave(&priv->sta_lock, flags);
5641
5642 priv->stations[sta_id].sta.key.key_flags = key_flags;
5643 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
5644
5645 for (i = 0; i < 5; i++)
5646 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
5647 cpu_to_le16(phase1key[i]);
5648
5649 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
5650 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
5651
5652 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
5653
5654 spin_unlock_irqrestore(&priv->sta_lock, flags);
5655
5656 IWL_DEBUG_MAC80211("leave\n");
5657 }
5658
5659 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
5660 const u8 *local_addr, const u8 *addr,
5661 struct ieee80211_key_conf *key)
5662 {
5663 struct iwl_priv *priv = hw->priv;
5664 DECLARE_MAC_BUF(mac);
5665 int ret = 0;
5666 u8 sta_id = IWL_INVALID_STATION;
5667 u8 is_default_wep_key = 0;
5668
5669 IWL_DEBUG_MAC80211("enter\n");
5670
5671 if (priv->hw_params.sw_crypto) {
5672 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
5673 return -EOPNOTSUPP;
5674 }
5675
5676 if (is_zero_ether_addr(addr))
5677 /* only support pairwise keys */
5678 return -EOPNOTSUPP;
5679
5680 sta_id = iwl_find_station(priv, addr);
5681 if (sta_id == IWL_INVALID_STATION) {
5682 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
5683 print_mac(mac, addr));
5684 return -EINVAL;
5685
5686 }
5687
5688 mutex_lock(&priv->mutex);
5689 iwl4965_scan_cancel_timeout(priv, 100);
5690 mutex_unlock(&priv->mutex);
5691
5692 /* If we are getting WEP group key and we didn't receive any key mapping
5693 * so far, we are in legacy wep mode (group key only), otherwise we are
5694 * in 1X mode.
5695 * In legacy wep mode, we use another host command to the uCode */
5696 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
5697 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
5698 if (cmd == SET_KEY)
5699 is_default_wep_key = !priv->key_mapping_key;
5700 else
5701 is_default_wep_key = priv->default_wep_key;
5702 }
5703
5704 switch (cmd) {
5705 case SET_KEY:
5706 if (is_default_wep_key)
5707 ret = iwl_set_default_wep_key(priv, key);
5708 else
5709 ret = iwl_set_dynamic_key(priv, key, sta_id);
5710
5711 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
5712 break;
5713 case DISABLE_KEY:
5714 if (is_default_wep_key)
5715 ret = iwl_remove_default_wep_key(priv, key);
5716 else
5717 ret = iwl_remove_dynamic_key(priv, key, sta_id);
5718
5719 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
5720 break;
5721 default:
5722 ret = -EINVAL;
5723 }
5724
5725 IWL_DEBUG_MAC80211("leave\n");
5726
5727 return ret;
5728 }
5729
5730 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
5731 const struct ieee80211_tx_queue_params *params)
5732 {
5733 struct iwl_priv *priv = hw->priv;
5734 unsigned long flags;
5735 int q;
5736
5737 IWL_DEBUG_MAC80211("enter\n");
5738
5739 if (!iwl_is_ready_rf(priv)) {
5740 IWL_DEBUG_MAC80211("leave - RF not ready\n");
5741 return -EIO;
5742 }
5743
5744 if (queue >= AC_NUM) {
5745 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
5746 return 0;
5747 }
5748
5749 if (!priv->qos_data.qos_enable) {
5750 priv->qos_data.qos_active = 0;
5751 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
5752 return 0;
5753 }
5754 q = AC_NUM - 1 - queue;
5755
5756 spin_lock_irqsave(&priv->lock, flags);
5757
5758 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
5759 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
5760 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
5761 priv->qos_data.def_qos_parm.ac[q].edca_txop =
5762 cpu_to_le16((params->txop * 32));
5763
5764 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
5765 priv->qos_data.qos_active = 1;
5766
5767 spin_unlock_irqrestore(&priv->lock, flags);
5768
5769 mutex_lock(&priv->mutex);
5770 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
5771 iwl4965_activate_qos(priv, 1);
5772 else if (priv->assoc_id && iwl_is_associated(priv))
5773 iwl4965_activate_qos(priv, 0);
5774
5775 mutex_unlock(&priv->mutex);
5776
5777 IWL_DEBUG_MAC80211("leave\n");
5778 return 0;
5779 }
5780
5781 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
5782 struct ieee80211_tx_queue_stats *stats)
5783 {
5784 struct iwl_priv *priv = hw->priv;
5785 int i, avail;
5786 struct iwl_tx_queue *txq;
5787 struct iwl4965_queue *q;
5788 unsigned long flags;
5789
5790 IWL_DEBUG_MAC80211("enter\n");
5791
5792 if (!iwl_is_ready_rf(priv)) {
5793 IWL_DEBUG_MAC80211("leave - RF not ready\n");
5794 return -EIO;
5795 }
5796
5797 spin_lock_irqsave(&priv->lock, flags);
5798
5799 for (i = 0; i < AC_NUM; i++) {
5800 txq = &priv->txq[i];
5801 q = &txq->q;
5802 avail = iwl4965_queue_space(q);
5803
5804 stats[i].len = q->n_window - avail;
5805 stats[i].limit = q->n_window - q->high_mark;
5806 stats[i].count = q->n_window;
5807
5808 }
5809 spin_unlock_irqrestore(&priv->lock, flags);
5810
5811 IWL_DEBUG_MAC80211("leave\n");
5812
5813 return 0;
5814 }
5815
5816 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
5817 struct ieee80211_low_level_stats *stats)
5818 {
5819 struct iwl_priv *priv = hw->priv;
5820
5821 priv = hw->priv;
5822 IWL_DEBUG_MAC80211("enter\n");
5823 IWL_DEBUG_MAC80211("leave\n");
5824
5825 return 0;
5826 }
5827
5828 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
5829 {
5830 struct iwl_priv *priv;
5831
5832 priv = hw->priv;
5833 IWL_DEBUG_MAC80211("enter\n");
5834 IWL_DEBUG_MAC80211("leave\n");
5835
5836 return 0;
5837 }
5838
5839 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
5840 {
5841 struct iwl_priv *priv = hw->priv;
5842 unsigned long flags;
5843
5844 mutex_lock(&priv->mutex);
5845 IWL_DEBUG_MAC80211("enter\n");
5846
5847 priv->lq_mngr.lq_ready = 0;
5848 #ifdef CONFIG_IWL4965_HT
5849 spin_lock_irqsave(&priv->lock, flags);
5850 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
5851 spin_unlock_irqrestore(&priv->lock, flags);
5852 #endif /* CONFIG_IWL4965_HT */
5853
5854 iwl_reset_qos(priv);
5855
5856 cancel_delayed_work(&priv->post_associate);
5857
5858 spin_lock_irqsave(&priv->lock, flags);
5859 priv->assoc_id = 0;
5860 priv->assoc_capability = 0;
5861 priv->assoc_station_added = 0;
5862
5863 /* new association get rid of ibss beacon skb */
5864 if (priv->ibss_beacon)
5865 dev_kfree_skb(priv->ibss_beacon);
5866
5867 priv->ibss_beacon = NULL;
5868
5869 priv->beacon_int = priv->hw->conf.beacon_int;
5870 priv->timestamp = 0;
5871 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
5872 priv->beacon_int = 0;
5873
5874 spin_unlock_irqrestore(&priv->lock, flags);
5875
5876 if (!iwl_is_ready_rf(priv)) {
5877 IWL_DEBUG_MAC80211("leave - not ready\n");
5878 mutex_unlock(&priv->mutex);
5879 return;
5880 }
5881
5882 /* we are restarting association process
5883 * clear RXON_FILTER_ASSOC_MSK bit
5884 */
5885 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
5886 iwl4965_scan_cancel_timeout(priv, 100);
5887 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5888 iwl4965_commit_rxon(priv);
5889 }
5890
5891 iwl_power_update_mode(priv, 0);
5892
5893 /* Per mac80211.h: This is only used in IBSS mode... */
5894 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
5895
5896 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
5897 mutex_unlock(&priv->mutex);
5898 return;
5899 }
5900
5901 iwl4965_set_rate(priv);
5902
5903 mutex_unlock(&priv->mutex);
5904
5905 IWL_DEBUG_MAC80211("leave\n");
5906 }
5907
5908 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
5909 struct ieee80211_tx_control *control)
5910 {
5911 struct iwl_priv *priv = hw->priv;
5912 unsigned long flags;
5913
5914 mutex_lock(&priv->mutex);
5915 IWL_DEBUG_MAC80211("enter\n");
5916
5917 if (!iwl_is_ready_rf(priv)) {
5918 IWL_DEBUG_MAC80211("leave - RF not ready\n");
5919 mutex_unlock(&priv->mutex);
5920 return -EIO;
5921 }
5922
5923 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
5924 IWL_DEBUG_MAC80211("leave - not IBSS\n");
5925 mutex_unlock(&priv->mutex);
5926 return -EIO;
5927 }
5928
5929 spin_lock_irqsave(&priv->lock, flags);
5930
5931 if (priv->ibss_beacon)
5932 dev_kfree_skb(priv->ibss_beacon);
5933
5934 priv->ibss_beacon = skb;
5935
5936 priv->assoc_id = 0;
5937
5938 IWL_DEBUG_MAC80211("leave\n");
5939 spin_unlock_irqrestore(&priv->lock, flags);
5940
5941 iwl_reset_qos(priv);
5942
5943 queue_work(priv->workqueue, &priv->post_associate.work);
5944
5945 mutex_unlock(&priv->mutex);
5946
5947 return 0;
5948 }
5949
5950 /*****************************************************************************
5951 *
5952 * sysfs attributes
5953 *
5954 *****************************************************************************/
5955
5956 #ifdef CONFIG_IWLWIFI_DEBUG
5957
5958 /*
5959 * The following adds a new attribute to the sysfs representation
5960 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
5961 * used for controlling the debug level.
5962 *
5963 * See the level definitions in iwl for details.
5964 */
5965
5966 static ssize_t show_debug_level(struct device_driver *d, char *buf)
5967 {
5968 return sprintf(buf, "0x%08X\n", iwl_debug_level);
5969 }
5970 static ssize_t store_debug_level(struct device_driver *d,
5971 const char *buf, size_t count)
5972 {
5973 char *p = (char *)buf;
5974 u32 val;
5975
5976 val = simple_strtoul(p, &p, 0);
5977 if (p == buf)
5978 printk(KERN_INFO DRV_NAME
5979 ": %s is not in hex or decimal form.\n", buf);
5980 else
5981 iwl_debug_level = val;
5982
5983 return strnlen(buf, count);
5984 }
5985
5986 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
5987 show_debug_level, store_debug_level);
5988
5989 #endif /* CONFIG_IWLWIFI_DEBUG */
5990
5991
5992 static ssize_t show_temperature(struct device *d,
5993 struct device_attribute *attr, char *buf)
5994 {
5995 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5996
5997 if (!iwl_is_alive(priv))
5998 return -EAGAIN;
5999
6000 return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
6001 }
6002
6003 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
6004
6005 static ssize_t show_rs_window(struct device *d,
6006 struct device_attribute *attr,
6007 char *buf)
6008 {
6009 struct iwl_priv *priv = d->driver_data;
6010 return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
6011 }
6012 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
6013
6014 static ssize_t show_tx_power(struct device *d,
6015 struct device_attribute *attr, char *buf)
6016 {
6017 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6018 return sprintf(buf, "%d\n", priv->user_txpower_limit);
6019 }
6020
6021 static ssize_t store_tx_power(struct device *d,
6022 struct device_attribute *attr,
6023 const char *buf, size_t count)
6024 {
6025 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6026 char *p = (char *)buf;
6027 u32 val;
6028
6029 val = simple_strtoul(p, &p, 10);
6030 if (p == buf)
6031 printk(KERN_INFO DRV_NAME
6032 ": %s is not in decimal form.\n", buf);
6033 else
6034 iwl4965_hw_reg_set_txpower(priv, val);
6035
6036 return count;
6037 }
6038
6039 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
6040
6041 static ssize_t show_flags(struct device *d,
6042 struct device_attribute *attr, char *buf)
6043 {
6044 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6045
6046 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
6047 }
6048
6049 static ssize_t store_flags(struct device *d,
6050 struct device_attribute *attr,
6051 const char *buf, size_t count)
6052 {
6053 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6054 u32 flags = simple_strtoul(buf, NULL, 0);
6055
6056 mutex_lock(&priv->mutex);
6057 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
6058 /* Cancel any currently running scans... */
6059 if (iwl4965_scan_cancel_timeout(priv, 100))
6060 IWL_WARNING("Could not cancel scan.\n");
6061 else {
6062 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
6063 flags);
6064 priv->staging_rxon.flags = cpu_to_le32(flags);
6065 iwl4965_commit_rxon(priv);
6066 }
6067 }
6068 mutex_unlock(&priv->mutex);
6069
6070 return count;
6071 }
6072
6073 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
6074
6075 static ssize_t show_filter_flags(struct device *d,
6076 struct device_attribute *attr, char *buf)
6077 {
6078 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6079
6080 return sprintf(buf, "0x%04X\n",
6081 le32_to_cpu(priv->active_rxon.filter_flags));
6082 }
6083
6084 static ssize_t store_filter_flags(struct device *d,
6085 struct device_attribute *attr,
6086 const char *buf, size_t count)
6087 {
6088 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6089 u32 filter_flags = simple_strtoul(buf, NULL, 0);
6090
6091 mutex_lock(&priv->mutex);
6092 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
6093 /* Cancel any currently running scans... */
6094 if (iwl4965_scan_cancel_timeout(priv, 100))
6095 IWL_WARNING("Could not cancel scan.\n");
6096 else {
6097 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
6098 "0x%04X\n", filter_flags);
6099 priv->staging_rxon.filter_flags =
6100 cpu_to_le32(filter_flags);
6101 iwl4965_commit_rxon(priv);
6102 }
6103 }
6104 mutex_unlock(&priv->mutex);
6105
6106 return count;
6107 }
6108
6109 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
6110 store_filter_flags);
6111
6112 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
6113
6114 static ssize_t show_measurement(struct device *d,
6115 struct device_attribute *attr, char *buf)
6116 {
6117 struct iwl_priv *priv = dev_get_drvdata(d);
6118 struct iwl4965_spectrum_notification measure_report;
6119 u32 size = sizeof(measure_report), len = 0, ofs = 0;
6120 u8 *data = (u8 *) & measure_report;
6121 unsigned long flags;
6122
6123 spin_lock_irqsave(&priv->lock, flags);
6124 if (!(priv->measurement_status & MEASUREMENT_READY)) {
6125 spin_unlock_irqrestore(&priv->lock, flags);
6126 return 0;
6127 }
6128 memcpy(&measure_report, &priv->measure_report, size);
6129 priv->measurement_status = 0;
6130 spin_unlock_irqrestore(&priv->lock, flags);
6131
6132 while (size && (PAGE_SIZE - len)) {
6133 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
6134 PAGE_SIZE - len, 1);
6135 len = strlen(buf);
6136 if (PAGE_SIZE - len)
6137 buf[len++] = '\n';
6138
6139 ofs += 16;
6140 size -= min(size, 16U);
6141 }
6142
6143 return len;
6144 }
6145
6146 static ssize_t store_measurement(struct device *d,
6147 struct device_attribute *attr,
6148 const char *buf, size_t count)
6149 {
6150 struct iwl_priv *priv = dev_get_drvdata(d);
6151 struct ieee80211_measurement_params params = {
6152 .channel = le16_to_cpu(priv->active_rxon.channel),
6153 .start_time = cpu_to_le64(priv->last_tsf),
6154 .duration = cpu_to_le16(1),
6155 };
6156 u8 type = IWL_MEASURE_BASIC;
6157 u8 buffer[32];
6158 u8 channel;
6159
6160 if (count) {
6161 char *p = buffer;
6162 strncpy(buffer, buf, min(sizeof(buffer), count));
6163 channel = simple_strtoul(p, NULL, 0);
6164 if (channel)
6165 params.channel = channel;
6166
6167 p = buffer;
6168 while (*p && *p != ' ')
6169 p++;
6170 if (*p)
6171 type = simple_strtoul(p + 1, NULL, 0);
6172 }
6173
6174 IWL_DEBUG_INFO("Invoking measurement of type %d on "
6175 "channel %d (for '%s')\n", type, params.channel, buf);
6176 iwl4965_get_measurement(priv, &params, type);
6177
6178 return count;
6179 }
6180
6181 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
6182 show_measurement, store_measurement);
6183 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
6184
6185 static ssize_t store_retry_rate(struct device *d,
6186 struct device_attribute *attr,
6187 const char *buf, size_t count)
6188 {
6189 struct iwl_priv *priv = dev_get_drvdata(d);
6190
6191 priv->retry_rate = simple_strtoul(buf, NULL, 0);
6192 if (priv->retry_rate <= 0)
6193 priv->retry_rate = 1;
6194
6195 return count;
6196 }
6197
6198 static ssize_t show_retry_rate(struct device *d,
6199 struct device_attribute *attr, char *buf)
6200 {
6201 struct iwl_priv *priv = dev_get_drvdata(d);
6202 return sprintf(buf, "%d", priv->retry_rate);
6203 }
6204
6205 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
6206 store_retry_rate);
6207
6208 static ssize_t store_power_level(struct device *d,
6209 struct device_attribute *attr,
6210 const char *buf, size_t count)
6211 {
6212 struct iwl_priv *priv = dev_get_drvdata(d);
6213 int rc;
6214 int mode;
6215
6216 mode = simple_strtoul(buf, NULL, 0);
6217 mutex_lock(&priv->mutex);
6218
6219 if (!iwl_is_ready(priv)) {
6220 rc = -EAGAIN;
6221 goto out;
6222 }
6223
6224 rc = iwl_power_set_user_mode(priv, mode);
6225 if (rc) {
6226 IWL_DEBUG_MAC80211("failed setting power mode.\n");
6227 goto out;
6228 }
6229 rc = count;
6230
6231 out:
6232 mutex_unlock(&priv->mutex);
6233 return rc;
6234 }
6235
6236 #define MAX_WX_STRING 80
6237
6238 /* Values are in microsecond */
6239 static const s32 timeout_duration[] = {
6240 350000,
6241 250000,
6242 75000,
6243 37000,
6244 25000,
6245 };
6246 static const s32 period_duration[] = {
6247 400000,
6248 700000,
6249 1000000,
6250 1000000,
6251 1000000
6252 };
6253
6254 static ssize_t show_power_level(struct device *d,
6255 struct device_attribute *attr, char *buf)
6256 {
6257 struct iwl_priv *priv = dev_get_drvdata(d);
6258 int level = priv->power_data.power_mode;
6259 char *p = buf;
6260
6261 p += sprintf(p, "%d ", level);
6262 switch (level) {
6263 case IWL_POWER_MODE_CAM:
6264 case IWL_POWER_AC:
6265 p += sprintf(p, "(AC)");
6266 break;
6267 case IWL_POWER_BATTERY:
6268 p += sprintf(p, "(BATTERY)");
6269 break;
6270 default:
6271 p += sprintf(p,
6272 "(Timeout %dms, Period %dms)",
6273 timeout_duration[level - 1] / 1000,
6274 period_duration[level - 1] / 1000);
6275 }
6276 /*
6277 if (!(priv->power_mode & IWL_POWER_ENABLED))
6278 p += sprintf(p, " OFF\n");
6279 else
6280 p += sprintf(p, " \n");
6281 */
6282 p += sprintf(p, " \n");
6283 return (p - buf + 1);
6284 }
6285
6286 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
6287 store_power_level);
6288
6289 static ssize_t show_channels(struct device *d,
6290 struct device_attribute *attr, char *buf)
6291 {
6292 /* all this shit doesn't belong into sysfs anyway */
6293 return 0;
6294 }
6295
6296 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
6297
6298 static ssize_t show_statistics(struct device *d,
6299 struct device_attribute *attr, char *buf)
6300 {
6301 struct iwl_priv *priv = dev_get_drvdata(d);
6302 u32 size = sizeof(struct iwl4965_notif_statistics);
6303 u32 len = 0, ofs = 0;
6304 u8 *data = (u8 *) & priv->statistics;
6305 int rc = 0;
6306
6307 if (!iwl_is_alive(priv))
6308 return -EAGAIN;
6309
6310 mutex_lock(&priv->mutex);
6311 rc = iwl_send_statistics_request(priv, 0);
6312 mutex_unlock(&priv->mutex);
6313
6314 if (rc) {
6315 len = sprintf(buf,
6316 "Error sending statistics request: 0x%08X\n", rc);
6317 return len;
6318 }
6319
6320 while (size && (PAGE_SIZE - len)) {
6321 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
6322 PAGE_SIZE - len, 1);
6323 len = strlen(buf);
6324 if (PAGE_SIZE - len)
6325 buf[len++] = '\n';
6326
6327 ofs += 16;
6328 size -= min(size, 16U);
6329 }
6330
6331 return len;
6332 }
6333
6334 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
6335
6336 static ssize_t show_status(struct device *d,
6337 struct device_attribute *attr, char *buf)
6338 {
6339 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6340 if (!iwl_is_alive(priv))
6341 return -EAGAIN;
6342 return sprintf(buf, "0x%08x\n", (int)priv->status);
6343 }
6344
6345 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
6346
6347 static ssize_t dump_error_log(struct device *d,
6348 struct device_attribute *attr,
6349 const char *buf, size_t count)
6350 {
6351 char *p = (char *)buf;
6352
6353 if (p[0] == '1')
6354 iwl4965_dump_nic_error_log((struct iwl_priv *)d->driver_data);
6355
6356 return strnlen(buf, count);
6357 }
6358
6359 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
6360
6361 static ssize_t dump_event_log(struct device *d,
6362 struct device_attribute *attr,
6363 const char *buf, size_t count)
6364 {
6365 char *p = (char *)buf;
6366
6367 if (p[0] == '1')
6368 iwl4965_dump_nic_event_log((struct iwl_priv *)d->driver_data);
6369
6370 return strnlen(buf, count);
6371 }
6372
6373 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
6374
6375 /*****************************************************************************
6376 *
6377 * driver setup and teardown
6378 *
6379 *****************************************************************************/
6380
6381 static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
6382 {
6383 priv->workqueue = create_workqueue(DRV_NAME);
6384
6385 init_waitqueue_head(&priv->wait_command_queue);
6386
6387 INIT_WORK(&priv->up, iwl4965_bg_up);
6388 INIT_WORK(&priv->restart, iwl4965_bg_restart);
6389 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
6390 INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
6391 INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
6392 INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
6393 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
6394 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
6395 INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
6396 INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
6397 INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
6398 INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
6399 INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
6400
6401 iwl4965_hw_setup_deferred_work(priv);
6402
6403 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
6404 iwl4965_irq_tasklet, (unsigned long)priv);
6405 }
6406
6407 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
6408 {
6409 iwl4965_hw_cancel_deferred_work(priv);
6410
6411 cancel_delayed_work_sync(&priv->init_alive_start);
6412 cancel_delayed_work(&priv->scan_check);
6413 cancel_delayed_work(&priv->alive_start);
6414 cancel_delayed_work(&priv->post_associate);
6415 cancel_work_sync(&priv->beacon_update);
6416 }
6417
6418 static struct attribute *iwl4965_sysfs_entries[] = {
6419 &dev_attr_channels.attr,
6420 &dev_attr_dump_errors.attr,
6421 &dev_attr_dump_events.attr,
6422 &dev_attr_flags.attr,
6423 &dev_attr_filter_flags.attr,
6424 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
6425 &dev_attr_measurement.attr,
6426 #endif
6427 &dev_attr_power_level.attr,
6428 &dev_attr_retry_rate.attr,
6429 &dev_attr_rs_window.attr,
6430 &dev_attr_statistics.attr,
6431 &dev_attr_status.attr,
6432 &dev_attr_temperature.attr,
6433 &dev_attr_tx_power.attr,
6434
6435 NULL
6436 };
6437
6438 static struct attribute_group iwl4965_attribute_group = {
6439 .name = NULL, /* put in device directory */
6440 .attrs = iwl4965_sysfs_entries,
6441 };
6442
6443 static struct ieee80211_ops iwl4965_hw_ops = {
6444 .tx = iwl4965_mac_tx,
6445 .start = iwl4965_mac_start,
6446 .stop = iwl4965_mac_stop,
6447 .add_interface = iwl4965_mac_add_interface,
6448 .remove_interface = iwl4965_mac_remove_interface,
6449 .config = iwl4965_mac_config,
6450 .config_interface = iwl4965_mac_config_interface,
6451 .configure_filter = iwl4965_configure_filter,
6452 .set_key = iwl4965_mac_set_key,
6453 .update_tkip_key = iwl4965_mac_update_tkip_key,
6454 .get_stats = iwl4965_mac_get_stats,
6455 .get_tx_stats = iwl4965_mac_get_tx_stats,
6456 .conf_tx = iwl4965_mac_conf_tx,
6457 .get_tsf = iwl4965_mac_get_tsf,
6458 .reset_tsf = iwl4965_mac_reset_tsf,
6459 .beacon_update = iwl4965_mac_beacon_update,
6460 .bss_info_changed = iwl4965_bss_info_changed,
6461 #ifdef CONFIG_IWL4965_HT
6462 .ampdu_action = iwl4965_mac_ampdu_action,
6463 #endif /* CONFIG_IWL4965_HT */
6464 .hw_scan = iwl4965_mac_hw_scan
6465 };
6466
6467 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
6468 {
6469 int err = 0;
6470 struct iwl_priv *priv;
6471 struct ieee80211_hw *hw;
6472 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
6473 unsigned long flags;
6474 DECLARE_MAC_BUF(mac);
6475
6476 /************************
6477 * 1. Allocating HW data
6478 ************************/
6479
6480 /* Disabling hardware scan means that mac80211 will perform scans
6481 * "the hard way", rather than using device's scan. */
6482 if (cfg->mod_params->disable_hw_scan) {
6483 if (cfg->mod_params->debug & IWL_DL_INFO)
6484 dev_printk(KERN_DEBUG, &(pdev->dev),
6485 "Disabling hw_scan\n");
6486 iwl4965_hw_ops.hw_scan = NULL;
6487 }
6488
6489 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
6490 if (!hw) {
6491 err = -ENOMEM;
6492 goto out;
6493 }
6494 priv = hw->priv;
6495 /* At this point both hw and priv are allocated. */
6496
6497 SET_IEEE80211_DEV(hw, &pdev->dev);
6498
6499 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
6500 priv->cfg = cfg;
6501 priv->pci_dev = pdev;
6502
6503 #ifdef CONFIG_IWLWIFI_DEBUG
6504 priv->debug_level = priv->cfg->mod_params->debug;
6505 atomic_set(&priv->restrict_refcnt, 0);
6506 #endif
6507
6508 /**************************
6509 * 2. Initializing PCI bus
6510 **************************/
6511 if (pci_enable_device(pdev)) {
6512 err = -ENODEV;
6513 goto out_ieee80211_free_hw;
6514 }
6515
6516 pci_set_master(pdev);
6517
6518 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
6519 if (!err)
6520 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
6521 if (err) {
6522 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
6523 if (!err)
6524 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
6525 /* both attempts failed: */
6526 if (err) {
6527 printk(KERN_WARNING "%s: No suitable DMA available.\n",
6528 DRV_NAME);
6529 goto out_pci_disable_device;
6530 }
6531 }
6532
6533 err = pci_request_regions(pdev, DRV_NAME);
6534 if (err)
6535 goto out_pci_disable_device;
6536
6537 pci_set_drvdata(pdev, priv);
6538
6539 /* We disable the RETRY_TIMEOUT register (0x41) to keep
6540 * PCI Tx retries from interfering with C3 CPU state */
6541 pci_write_config_byte(pdev, 0x41, 0x00);
6542
6543 /***********************
6544 * 3. Read REV register
6545 ***********************/
6546 priv->hw_base = pci_iomap(pdev, 0, 0);
6547 if (!priv->hw_base) {
6548 err = -ENODEV;
6549 goto out_pci_release_regions;
6550 }
6551
6552 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
6553 (unsigned long long) pci_resource_len(pdev, 0));
6554 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
6555
6556 iwl_hw_detect(priv);
6557 printk(KERN_INFO DRV_NAME
6558 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
6559 priv->cfg->name, priv->hw_rev);
6560
6561 /* amp init */
6562 err = priv->cfg->ops->lib->apm_ops.init(priv);
6563 if (err < 0) {
6564 IWL_DEBUG_INFO("Failed to init APMG\n");
6565 goto out_iounmap;
6566 }
6567 /*****************
6568 * 4. Read EEPROM
6569 *****************/
6570 /* Read the EEPROM */
6571 err = iwl_eeprom_init(priv);
6572 if (err) {
6573 IWL_ERROR("Unable to init EEPROM\n");
6574 goto out_iounmap;
6575 }
6576 err = iwl_eeprom_check_version(priv);
6577 if (err)
6578 goto out_iounmap;
6579
6580 /* MAC Address location in EEPROM same for 3945/4965 */
6581 iwl_eeprom_get_mac(priv, priv->mac_addr);
6582 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
6583 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
6584
6585 /************************
6586 * 5. Setup HW constants
6587 ************************/
6588 /* Device-specific setup */
6589 if (priv->cfg->ops->lib->set_hw_params(priv)) {
6590 IWL_ERROR("failed to set hw parameters\n");
6591 goto out_free_eeprom;
6592 }
6593
6594 /*******************
6595 * 6. Setup hw/priv
6596 *******************/
6597
6598 err = iwl_setup(priv);
6599 if (err)
6600 goto out_free_eeprom;
6601 /* At this point both hw and priv are initialized. */
6602
6603 /**********************************
6604 * 7. Initialize module parameters
6605 **********************************/
6606
6607 /* Disable radio (SW RF KILL) via parameter when loading driver */
6608 if (priv->cfg->mod_params->disable) {
6609 set_bit(STATUS_RF_KILL_SW, &priv->status);
6610 IWL_DEBUG_INFO("Radio disabled.\n");
6611 }
6612
6613 if (priv->cfg->mod_params->enable_qos)
6614 priv->qos_data.qos_enable = 1;
6615
6616 /********************
6617 * 8. Setup services
6618 ********************/
6619 spin_lock_irqsave(&priv->lock, flags);
6620 iwl4965_disable_interrupts(priv);
6621 spin_unlock_irqrestore(&priv->lock, flags);
6622
6623 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
6624 if (err) {
6625 IWL_ERROR("failed to create sysfs device attributes\n");
6626 goto out_free_eeprom;
6627 }
6628
6629 err = iwl_dbgfs_register(priv, DRV_NAME);
6630 if (err) {
6631 IWL_ERROR("failed to create debugfs files\n");
6632 goto out_remove_sysfs;
6633 }
6634
6635 iwl4965_setup_deferred_work(priv);
6636 iwl4965_setup_rx_handlers(priv);
6637
6638 /********************
6639 * 9. Conclude
6640 ********************/
6641 pci_save_state(pdev);
6642 pci_disable_device(pdev);
6643
6644 /* notify iwlcore to init */
6645 iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
6646 return 0;
6647
6648 out_remove_sysfs:
6649 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
6650 out_free_eeprom:
6651 iwl_eeprom_free(priv);
6652 out_iounmap:
6653 pci_iounmap(pdev, priv->hw_base);
6654 out_pci_release_regions:
6655 pci_release_regions(pdev);
6656 pci_set_drvdata(pdev, NULL);
6657 out_pci_disable_device:
6658 pci_disable_device(pdev);
6659 out_ieee80211_free_hw:
6660 ieee80211_free_hw(priv->hw);
6661 out:
6662 return err;
6663 }
6664
6665 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
6666 {
6667 struct iwl_priv *priv = pci_get_drvdata(pdev);
6668 struct list_head *p, *q;
6669 int i;
6670 unsigned long flags;
6671
6672 if (!priv)
6673 return;
6674
6675 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
6676
6677 if (priv->mac80211_registered) {
6678 ieee80211_unregister_hw(priv->hw);
6679 priv->mac80211_registered = 0;
6680 }
6681
6682 set_bit(STATUS_EXIT_PENDING, &priv->status);
6683
6684 iwl4965_down(priv);
6685
6686 /* make sure we flush any pending irq or
6687 * tasklet for the driver
6688 */
6689 spin_lock_irqsave(&priv->lock, flags);
6690 iwl4965_disable_interrupts(priv);
6691 spin_unlock_irqrestore(&priv->lock, flags);
6692
6693 iwl_synchronize_irq(priv);
6694
6695 /* Free MAC hash list for ADHOC */
6696 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
6697 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
6698 list_del(p);
6699 kfree(list_entry(p, struct iwl4965_ibss_seq, list));
6700 }
6701 }
6702
6703 iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT);
6704 iwl_dbgfs_unregister(priv);
6705 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
6706
6707 iwl4965_dealloc_ucode_pci(priv);
6708
6709 if (priv->rxq.bd)
6710 iwl_rx_queue_free(priv, &priv->rxq);
6711 iwl_hw_txq_ctx_free(priv);
6712
6713 iwlcore_clear_stations_table(priv);
6714 iwl_eeprom_free(priv);
6715
6716
6717 /*netif_stop_queue(dev); */
6718 flush_workqueue(priv->workqueue);
6719
6720 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
6721 * priv->workqueue... so we can't take down the workqueue
6722 * until now... */
6723 destroy_workqueue(priv->workqueue);
6724 priv->workqueue = NULL;
6725
6726 pci_iounmap(pdev, priv->hw_base);
6727 pci_release_regions(pdev);
6728 pci_disable_device(pdev);
6729 pci_set_drvdata(pdev, NULL);
6730
6731 iwl_free_channel_map(priv);
6732 iwlcore_free_geos(priv);
6733
6734 if (priv->ibss_beacon)
6735 dev_kfree_skb(priv->ibss_beacon);
6736
6737 ieee80211_free_hw(priv->hw);
6738 }
6739
6740 #ifdef CONFIG_PM
6741
6742 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
6743 {
6744 struct iwl_priv *priv = pci_get_drvdata(pdev);
6745
6746 if (priv->is_open) {
6747 set_bit(STATUS_IN_SUSPEND, &priv->status);
6748 iwl4965_mac_stop(priv->hw);
6749 priv->is_open = 1;
6750 }
6751
6752 pci_set_power_state(pdev, PCI_D3hot);
6753
6754 return 0;
6755 }
6756
6757 static int iwl4965_pci_resume(struct pci_dev *pdev)
6758 {
6759 struct iwl_priv *priv = pci_get_drvdata(pdev);
6760
6761 pci_set_power_state(pdev, PCI_D0);
6762
6763 if (priv->is_open)
6764 iwl4965_mac_start(priv->hw);
6765
6766 clear_bit(STATUS_IN_SUSPEND, &priv->status);
6767 return 0;
6768 }
6769
6770 #endif /* CONFIG_PM */
6771
6772 /*****************************************************************************
6773 *
6774 * driver and module entry point
6775 *
6776 *****************************************************************************/
6777
6778 /* Hardware specific file defines the PCI IDs table for that hardware module */
6779 static struct pci_device_id iwl_hw_card_ids[] = {
6780 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
6781 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
6782 #ifdef CONFIG_IWL5000
6783 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
6784 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
6785 {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
6786 #endif /* CONFIG_IWL5000 */
6787 {0}
6788 };
6789 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
6790
6791 static struct pci_driver iwl_driver = {
6792 .name = DRV_NAME,
6793 .id_table = iwl_hw_card_ids,
6794 .probe = iwl4965_pci_probe,
6795 .remove = __devexit_p(iwl4965_pci_remove),
6796 #ifdef CONFIG_PM
6797 .suspend = iwl4965_pci_suspend,
6798 .resume = iwl4965_pci_resume,
6799 #endif
6800 };
6801
6802 static int __init iwl4965_init(void)
6803 {
6804
6805 int ret;
6806 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
6807 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
6808
6809 ret = iwl4965_rate_control_register();
6810 if (ret) {
6811 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
6812 return ret;
6813 }
6814
6815 ret = pci_register_driver(&iwl_driver);
6816 if (ret) {
6817 IWL_ERROR("Unable to initialize PCI module\n");
6818 goto error_register;
6819 }
6820 #ifdef CONFIG_IWLWIFI_DEBUG
6821 ret = driver_create_file(&iwl_driver.driver, &driver_attr_debug_level);
6822 if (ret) {
6823 IWL_ERROR("Unable to create driver sysfs file\n");
6824 goto error_debug;
6825 }
6826 #endif
6827
6828 return ret;
6829
6830 #ifdef CONFIG_IWLWIFI_DEBUG
6831 error_debug:
6832 pci_unregister_driver(&iwl_driver);
6833 #endif
6834 error_register:
6835 iwl4965_rate_control_unregister();
6836 return ret;
6837 }
6838
6839 static void __exit iwl4965_exit(void)
6840 {
6841 #ifdef CONFIG_IWLWIFI_DEBUG
6842 driver_remove_file(&iwl_driver.driver, &driver_attr_debug_level);
6843 #endif
6844 pci_unregister_driver(&iwl_driver);
6845 iwl4965_rate_control_unregister();
6846 }
6847
6848 module_exit(iwl4965_exit);
6849 module_init(iwl4965_init);
kernel source for telekom puls (alcatel/mediatek)