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iwlwifi: changing irrelevant comment
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / iwlwifi / iwl4965-base.c
blobd0f948d2cfab2be71c66372654701b3f6a18ef7d
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,
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, "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_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
3141 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
3142 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
3143 } else {
3144 /* No handling needed */
3145 IWL_DEBUG(IWL_DL_RX,
3146 "r %d i %d No handler needed for %s, 0x%02x\n",
3147 r, i, get_cmd_string(pkt->hdr.cmd),
3148 pkt->hdr.cmd);
3149 }
3150
3151 if (reclaim) {
3152 /* Invoke any callbacks, transfer the skb to caller, and
3153 * fire off the (possibly) blocking iwl_send_cmd()
3154 * as we reclaim the driver command queue */
3155 if (rxb && rxb->skb)
3156 iwl4965_tx_cmd_complete(priv, rxb);
3157 else
3158 IWL_WARNING("Claim null rxb?\n");
3159 }
3160
3161 /* For now we just don't re-use anything. We can tweak this
3162 * later to try and re-use notification packets and SKBs that
3163 * fail to Rx correctly */
3164 if (rxb->skb != NULL) {
3165 priv->alloc_rxb_skb--;
3166 dev_kfree_skb_any(rxb->skb);
3167 rxb->skb = NULL;
3168 }
3169
3170 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
3171 priv->hw_params.rx_buf_size,
3172 PCI_DMA_FROMDEVICE);
3173 spin_lock_irqsave(&rxq->lock, flags);
3174 list_add_tail(&rxb->list, &priv->rxq.rx_used);
3175 spin_unlock_irqrestore(&rxq->lock, flags);
3176 i = (i + 1) & RX_QUEUE_MASK;
3177 /* If there are a lot of unused frames,
3178 * restock the Rx queue so ucode wont assert. */
3179 if (fill_rx) {
3180 count++;
3181 if (count >= 8) {
3182 priv->rxq.read = i;
3183 __iwl_rx_replenish(priv);
3184 count = 0;
3185 }
3186 }
3187 }
3188
3189 /* Backtrack one entry */
3190 priv->rxq.read = i;
3191 iwl_rx_queue_restock(priv);
3192 }
3193 /* Convert linear signal-to-noise ratio into dB */
3194 static u8 ratio2dB[100] = {
3195 /* 0 1 2 3 4 5 6 7 8 9 */
3196 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
3197 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
3198 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
3199 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
3200 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
3201 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
3202 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
3203 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
3204 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
3205 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
3206 };
3207
3208 /* Calculates a relative dB value from a ratio of linear
3209 * (i.e. not dB) signal levels.
3210 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
3211 int iwl4965_calc_db_from_ratio(int sig_ratio)
3212 {
3213 /* 1000:1 or higher just report as 60 dB */
3214 if (sig_ratio >= 1000)
3215 return 60;
3216
3217 /* 100:1 or higher, divide by 10 and use table,
3218 * add 20 dB to make up for divide by 10 */
3219 if (sig_ratio >= 100)
3220 return (20 + (int)ratio2dB[sig_ratio/10]);
3221
3222 /* We shouldn't see this */
3223 if (sig_ratio < 1)
3224 return 0;
3225
3226 /* Use table for ratios 1:1 - 99:1 */
3227 return (int)ratio2dB[sig_ratio];
3228 }
3229
3230 #define PERFECT_RSSI (-20) /* dBm */
3231 #define WORST_RSSI (-95) /* dBm */
3232 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
3233
3234 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
3235 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
3236 * about formulas used below. */
3237 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
3238 {
3239 int sig_qual;
3240 int degradation = PERFECT_RSSI - rssi_dbm;
3241
3242 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
3243 * as indicator; formula is (signal dbm - noise dbm).
3244 * SNR at or above 40 is a great signal (100%).
3245 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
3246 * Weakest usable signal is usually 10 - 15 dB SNR. */
3247 if (noise_dbm) {
3248 if (rssi_dbm - noise_dbm >= 40)
3249 return 100;
3250 else if (rssi_dbm < noise_dbm)
3251 return 0;
3252 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
3253
3254 /* Else use just the signal level.
3255 * This formula is a least squares fit of data points collected and
3256 * compared with a reference system that had a percentage (%) display
3257 * for signal quality. */
3258 } else
3259 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
3260 (15 * RSSI_RANGE + 62 * degradation)) /
3261 (RSSI_RANGE * RSSI_RANGE);
3262
3263 if (sig_qual > 100)
3264 sig_qual = 100;
3265 else if (sig_qual < 1)
3266 sig_qual = 0;
3267
3268 return sig_qual;
3269 }
3270
3271 /**
3272 * iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
3273 */
3274 static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv,
3275 struct iwl_tx_queue *txq)
3276 {
3277 u32 reg = 0;
3278 int rc = 0;
3279 int txq_id = txq->q.id;
3280
3281 if (txq->need_update == 0)
3282 return rc;
3283
3284 /* if we're trying to save power */
3285 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3286 /* wake up nic if it's powered down ...
3287 * uCode will wake up, and interrupt us again, so next
3288 * time we'll skip this part. */
3289 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
3290
3291 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3292 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
3293 iwl_set_bit(priv, CSR_GP_CNTRL,
3294 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3295 return rc;
3296 }
3297
3298 /* restore this queue's parameters in nic hardware. */
3299 rc = iwl_grab_nic_access(priv);
3300 if (rc)
3301 return rc;
3302 iwl_write_direct32(priv, HBUS_TARG_WRPTR,
3303 txq->q.write_ptr | (txq_id << 8));
3304 iwl_release_nic_access(priv);
3305
3306 /* else not in power-save mode, uCode will never sleep when we're
3307 * trying to tx (during RFKILL, we're not trying to tx). */
3308 } else
3309 iwl_write32(priv, HBUS_TARG_WRPTR,
3310 txq->q.write_ptr | (txq_id << 8));
3311
3312 txq->need_update = 0;
3313
3314 return rc;
3315 }
3316
3317 #ifdef CONFIG_IWLWIFI_DEBUG
3318 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
3319 {
3320 struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
3321 DECLARE_MAC_BUF(mac);
3322
3323 IWL_DEBUG_RADIO("RX CONFIG:\n");
3324 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
3325 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
3326 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
3327 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
3328 le32_to_cpu(rxon->filter_flags));
3329 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
3330 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
3331 rxon->ofdm_basic_rates);
3332 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
3333 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
3334 print_mac(mac, rxon->node_addr));
3335 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
3336 print_mac(mac, rxon->bssid_addr));
3337 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
3338 }
3339 #endif
3340
3341 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
3342 {
3343 IWL_DEBUG_ISR("Enabling interrupts\n");
3344 set_bit(STATUS_INT_ENABLED, &priv->status);
3345 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
3346 }
3347
3348 /* call this function to flush any scheduled tasklet */
3349 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
3350 {
3351 /* wait to make sure we flush pedding tasklet*/
3352 synchronize_irq(priv->pci_dev->irq);
3353 tasklet_kill(&priv->irq_tasklet);
3354 }
3355
3356 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
3357 {
3358 clear_bit(STATUS_INT_ENABLED, &priv->status);
3359
3360 /* disable interrupts from uCode/NIC to host */
3361 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
3362
3363 /* acknowledge/clear/reset any interrupts still pending
3364 * from uCode or flow handler (Rx/Tx DMA) */
3365 iwl_write32(priv, CSR_INT, 0xffffffff);
3366 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
3367 IWL_DEBUG_ISR("Disabled interrupts\n");
3368 }
3369
3370 static const char *desc_lookup(int i)
3371 {
3372 switch (i) {
3373 case 1:
3374 return "FAIL";
3375 case 2:
3376 return "BAD_PARAM";
3377 case 3:
3378 return "BAD_CHECKSUM";
3379 case 4:
3380 return "NMI_INTERRUPT";
3381 case 5:
3382 return "SYSASSERT";
3383 case 6:
3384 return "FATAL_ERROR";
3385 }
3386
3387 return "UNKNOWN";
3388 }
3389
3390 #define ERROR_START_OFFSET (1 * sizeof(u32))
3391 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
3392
3393 static void iwl4965_dump_nic_error_log(struct iwl_priv *priv)
3394 {
3395 u32 data2, line;
3396 u32 desc, time, count, base, data1;
3397 u32 blink1, blink2, ilink1, ilink2;
3398 int rc;
3399
3400 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
3401
3402 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
3403 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
3404 return;
3405 }
3406
3407 rc = iwl_grab_nic_access(priv);
3408 if (rc) {
3409 IWL_WARNING("Can not read from adapter at this time.\n");
3410 return;
3411 }
3412
3413 count = iwl_read_targ_mem(priv, base);
3414
3415 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
3416 IWL_ERROR("Start IWL Error Log Dump:\n");
3417 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
3418 }
3419
3420 desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
3421 blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
3422 blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
3423 ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
3424 ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
3425 data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
3426 data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
3427 line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
3428 time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
3429
3430 IWL_ERROR("Desc Time "
3431 "data1 data2 line\n");
3432 IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
3433 desc_lookup(desc), desc, time, data1, data2, line);
3434 IWL_ERROR("blink1 blink2 ilink1 ilink2\n");
3435 IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
3436 ilink1, ilink2);
3437
3438 iwl_release_nic_access(priv);
3439 }
3440
3441 #define EVENT_START_OFFSET (4 * sizeof(u32))
3442
3443 /**
3444 * iwl4965_print_event_log - Dump error event log to syslog
3445 *
3446 * NOTE: Must be called with iwl_grab_nic_access() already obtained!
3447 */
3448 static void iwl4965_print_event_log(struct iwl_priv *priv, u32 start_idx,
3449 u32 num_events, u32 mode)
3450 {
3451 u32 i;
3452 u32 base; /* SRAM byte address of event log header */
3453 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
3454 u32 ptr; /* SRAM byte address of log data */
3455 u32 ev, time, data; /* event log data */
3456
3457 if (num_events == 0)
3458 return;
3459
3460 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
3461
3462 if (mode == 0)
3463 event_size = 2 * sizeof(u32);
3464 else
3465 event_size = 3 * sizeof(u32);
3466
3467 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
3468
3469 /* "time" is actually "data" for mode 0 (no timestamp).
3470 * place event id # at far right for easier visual parsing. */
3471 for (i = 0; i < num_events; i++) {
3472 ev = iwl_read_targ_mem(priv, ptr);
3473 ptr += sizeof(u32);
3474 time = iwl_read_targ_mem(priv, ptr);
3475 ptr += sizeof(u32);
3476 if (mode == 0)
3477 IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
3478 else {
3479 data = iwl_read_targ_mem(priv, ptr);
3480 ptr += sizeof(u32);
3481 IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
3482 }
3483 }
3484 }
3485
3486 static void iwl4965_dump_nic_event_log(struct iwl_priv *priv)
3487 {
3488 int rc;
3489 u32 base; /* SRAM byte address of event log header */
3490 u32 capacity; /* event log capacity in # entries */
3491 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
3492 u32 num_wraps; /* # times uCode wrapped to top of log */
3493 u32 next_entry; /* index of next entry to be written by uCode */
3494 u32 size; /* # entries that we'll print */
3495
3496 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
3497 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
3498 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
3499 return;
3500 }
3501
3502 rc = iwl_grab_nic_access(priv);
3503 if (rc) {
3504 IWL_WARNING("Can not read from adapter at this time.\n");
3505 return;
3506 }
3507
3508 /* event log header */
3509 capacity = iwl_read_targ_mem(priv, base);
3510 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
3511 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
3512 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
3513
3514 size = num_wraps ? capacity : next_entry;
3515
3516 /* bail out if nothing in log */
3517 if (size == 0) {
3518 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
3519 iwl_release_nic_access(priv);
3520 return;
3521 }
3522
3523 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
3524 size, num_wraps);
3525
3526 /* if uCode has wrapped back to top of log, start at the oldest entry,
3527 * i.e the next one that uCode would fill. */
3528 if (num_wraps)
3529 iwl4965_print_event_log(priv, next_entry,
3530 capacity - next_entry, mode);
3531
3532 /* (then/else) start at top of log */
3533 iwl4965_print_event_log(priv, 0, next_entry, mode);
3534
3535 iwl_release_nic_access(priv);
3536 }
3537
3538 /**
3539 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
3540 */
3541 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
3542 {
3543 /* Set the FW error flag -- cleared on iwl4965_down */
3544 set_bit(STATUS_FW_ERROR, &priv->status);
3545
3546 /* Cancel currently queued command. */
3547 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3548
3549 #ifdef CONFIG_IWLWIFI_DEBUG
3550 if (priv->debug_level & IWL_DL_FW_ERRORS) {
3551 iwl4965_dump_nic_error_log(priv);
3552 iwl4965_dump_nic_event_log(priv);
3553 iwl4965_print_rx_config_cmd(priv);
3554 }
3555 #endif
3556
3557 wake_up_interruptible(&priv->wait_command_queue);
3558
3559 /* Keep the restart process from trying to send host
3560 * commands by clearing the INIT status bit */
3561 clear_bit(STATUS_READY, &priv->status);
3562
3563 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3564 IWL_DEBUG(IWL_DL_FW_ERRORS,
3565 "Restarting adapter due to uCode error.\n");
3566
3567 if (iwl_is_associated(priv)) {
3568 memcpy(&priv->recovery_rxon, &priv->active_rxon,
3569 sizeof(priv->recovery_rxon));
3570 priv->error_recovering = 1;
3571 }
3572 if (priv->cfg->mod_params->restart_fw)
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_RF_KILL, "RF_KILL bit toggled to %s.\n",
3674 hw_rf_kill ? "disable radio":"enable radio");
3675
3676 /* Queue restart only if RF_KILL switch was set to "kill"
3677 * when we loaded driver, and is now set to "enable".
3678 * After we're Alive, RF_KILL gets handled by
3679 * iwl4965_rx_card_state_notif() */
3680 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
3681 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3682 queue_work(priv->workqueue, &priv->restart);
3683 }
3684
3685 handled |= CSR_INT_BIT_RF_KILL;
3686 }
3687
3688 /* Chip got too hot and stopped itself */
3689 if (inta & CSR_INT_BIT_CT_KILL) {
3690 IWL_ERROR("Microcode CT kill error detected.\n");
3691 handled |= CSR_INT_BIT_CT_KILL;
3692 }
3693
3694 /* Error detected by uCode */
3695 if (inta & CSR_INT_BIT_SW_ERR) {
3696 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
3697 inta);
3698 iwl4965_irq_handle_error(priv);
3699 handled |= CSR_INT_BIT_SW_ERR;
3700 }
3701
3702 /* uCode wakes up after power-down sleep */
3703 if (inta & CSR_INT_BIT_WAKEUP) {
3704 IWL_DEBUG_ISR("Wakeup interrupt\n");
3705 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
3706 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]);
3707 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]);
3708 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]);
3709 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]);
3710 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]);
3711 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]);
3712
3713 handled |= CSR_INT_BIT_WAKEUP;
3714 }
3715
3716 /* All uCode command responses, including Tx command responses,
3717 * Rx "responses" (frame-received notification), and other
3718 * notifications from uCode come through here*/
3719 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
3720 iwl_rx_handle(priv);
3721 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
3722 }
3723
3724 if (inta & CSR_INT_BIT_FH_TX) {
3725 IWL_DEBUG_ISR("Tx interrupt\n");
3726 handled |= CSR_INT_BIT_FH_TX;
3727 }
3728
3729 if (inta & ~handled)
3730 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
3731
3732 if (inta & ~CSR_INI_SET_MASK) {
3733 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
3734 inta & ~CSR_INI_SET_MASK);
3735 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
3736 }
3737
3738 /* Re-enable all interrupts */
3739 /* only Re-enable if diabled by irq */
3740 if (test_bit(STATUS_INT_ENABLED, &priv->status))
3741 iwl4965_enable_interrupts(priv);
3742
3743 #ifdef CONFIG_IWLWIFI_DEBUG
3744 if (priv->debug_level & (IWL_DL_ISR)) {
3745 inta = iwl_read32(priv, CSR_INT);
3746 inta_mask = iwl_read32(priv, CSR_INT_MASK);
3747 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
3748 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
3749 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
3750 }
3751 #endif
3752 spin_unlock_irqrestore(&priv->lock, flags);
3753 }
3754
3755 static irqreturn_t iwl4965_isr(int irq, void *data)
3756 {
3757 struct iwl_priv *priv = data;
3758 u32 inta, inta_mask;
3759 u32 inta_fh;
3760 if (!priv)
3761 return IRQ_NONE;
3762
3763 spin_lock(&priv->lock);
3764
3765 /* Disable (but don't clear!) interrupts here to avoid
3766 * back-to-back ISRs and sporadic interrupts from our NIC.
3767 * If we have something to service, the tasklet will re-enable ints.
3768 * If we *don't* have something, we'll re-enable before leaving here. */
3769 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
3770 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
3771
3772 /* Discover which interrupts are active/pending */
3773 inta = iwl_read32(priv, CSR_INT);
3774 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
3775
3776 /* Ignore interrupt if there's nothing in NIC to service.
3777 * This may be due to IRQ shared with another device,
3778 * or due to sporadic interrupts thrown from our NIC. */
3779 if (!inta && !inta_fh) {
3780 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
3781 goto none;
3782 }
3783
3784 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
3785 /* Hardware disappeared. It might have already raised
3786 * an interrupt */
3787 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
3788 goto unplugged;
3789 }
3790
3791 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
3792 inta, inta_mask, inta_fh);
3793
3794 inta &= ~CSR_INT_BIT_SCD;
3795
3796 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
3797 if (likely(inta || inta_fh))
3798 tasklet_schedule(&priv->irq_tasklet);
3799
3800 unplugged:
3801 spin_unlock(&priv->lock);
3802 return IRQ_HANDLED;
3803
3804 none:
3805 /* re-enable interrupts here since we don't have anything to service. */
3806 /* only Re-enable if diabled by irq */
3807 if (test_bit(STATUS_INT_ENABLED, &priv->status))
3808 iwl4965_enable_interrupts(priv);
3809 spin_unlock(&priv->lock);
3810 return IRQ_NONE;
3811 }
3812
3813 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
3814 * sending probe req. This should be set long enough to hear probe responses
3815 * from more than one AP. */
3816 #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
3817 #define IWL_ACTIVE_DWELL_TIME_52 (10)
3818
3819 /* For faster active scanning, scan will move to the next channel if fewer than
3820 * PLCP_QUIET_THRESH packets are heard on this channel within
3821 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
3822 * time if it's a quiet channel (nothing responded to our probe, and there's
3823 * no other traffic).
3824 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
3825 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
3826 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
3827
3828 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
3829 * Must be set longer than active dwell time.
3830 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
3831 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
3832 #define IWL_PASSIVE_DWELL_TIME_52 (10)
3833 #define IWL_PASSIVE_DWELL_BASE (100)
3834 #define IWL_CHANNEL_TUNE_TIME 5
3835
3836 static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
3837 enum ieee80211_band band)
3838 {
3839 if (band == IEEE80211_BAND_5GHZ)
3840 return IWL_ACTIVE_DWELL_TIME_52;
3841 else
3842 return IWL_ACTIVE_DWELL_TIME_24;
3843 }
3844
3845 static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
3846 enum ieee80211_band band)
3847 {
3848 u16 active = iwl4965_get_active_dwell_time(priv, band);
3849 u16 passive = (band != IEEE80211_BAND_5GHZ) ?
3850 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
3851 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
3852
3853 if (iwl_is_associated(priv)) {
3854 /* If we're associated, we clamp the maximum passive
3855 * dwell time to be 98% of the beacon interval (minus
3856 * 2 * channel tune time) */
3857 passive = priv->beacon_int;
3858 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
3859 passive = IWL_PASSIVE_DWELL_BASE;
3860 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
3861 }
3862
3863 if (passive <= active)
3864 passive = active + 1;
3865
3866 return passive;
3867 }
3868
3869 static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
3870 enum ieee80211_band band,
3871 u8 is_active, u8 direct_mask,
3872 struct iwl4965_scan_channel *scan_ch)
3873 {
3874 const struct ieee80211_channel *channels = NULL;
3875 const struct ieee80211_supported_band *sband;
3876 const struct iwl_channel_info *ch_info;
3877 u16 passive_dwell = 0;
3878 u16 active_dwell = 0;
3879 int added, i;
3880
3881 sband = iwl_get_hw_mode(priv, band);
3882 if (!sband)
3883 return 0;
3884
3885 channels = sband->channels;
3886
3887 active_dwell = iwl4965_get_active_dwell_time(priv, band);
3888 passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
3889
3890 for (i = 0, added = 0; i < sband->n_channels; i++) {
3891 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
3892 continue;
3893
3894 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
3895
3896 ch_info = iwl_get_channel_info(priv, band,
3897 scan_ch->channel);
3898 if (!is_channel_valid(ch_info)) {
3899 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
3900 scan_ch->channel);
3901 continue;
3902 }
3903
3904 if (!is_active || is_channel_passive(ch_info) ||
3905 (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
3906 scan_ch->type = 0; /* passive */
3907 else
3908 scan_ch->type = 1; /* active */
3909
3910 if (scan_ch->type & 1)
3911 scan_ch->type |= (direct_mask << 1);
3912
3913 scan_ch->active_dwell = cpu_to_le16(active_dwell);
3914 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
3915
3916 /* Set txpower levels to defaults */
3917 scan_ch->tpc.dsp_atten = 110;
3918 /* scan_pwr_info->tpc.dsp_atten; */
3919
3920 /*scan_pwr_info->tpc.tx_gain; */
3921 if (band == IEEE80211_BAND_5GHZ)
3922 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
3923 else {
3924 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
3925 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
3926 * power level:
3927 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
3928 */
3929 }
3930
3931 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
3932 scan_ch->channel,
3933 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
3934 (scan_ch->type & 1) ?
3935 active_dwell : passive_dwell);
3936
3937 scan_ch++;
3938 added++;
3939 }
3940
3941 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
3942 return added;
3943 }
3944
3945 /******************************************************************************
3946 *
3947 * uCode download functions
3948 *
3949 ******************************************************************************/
3950
3951 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
3952 {
3953 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
3954 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
3955 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
3956 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
3957 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
3958 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
3959 }
3960
3961 static void iwl4965_nic_start(struct iwl_priv *priv)
3962 {
3963 /* Remove all resets to allow NIC to operate */
3964 iwl_write32(priv, CSR_RESET, 0);
3965 }
3966
3967
3968 /**
3969 * iwl4965_read_ucode - Read uCode images from disk file.
3970 *
3971 * Copy into buffers for card to fetch via bus-mastering
3972 */
3973 static int iwl4965_read_ucode(struct iwl_priv *priv)
3974 {
3975 struct iwl4965_ucode *ucode;
3976 int ret;
3977 const struct firmware *ucode_raw;
3978 const char *name = priv->cfg->fw_name;
3979 u8 *src;
3980 size_t len;
3981 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
3982
3983 /* Ask kernel firmware_class module to get the boot firmware off disk.
3984 * request_firmware() is synchronous, file is in memory on return. */
3985 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
3986 if (ret < 0) {
3987 IWL_ERROR("%s firmware file req failed: Reason %d\n",
3988 name, ret);
3989 goto error;
3990 }
3991
3992 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
3993 name, ucode_raw->size);
3994
3995 /* Make sure that we got at least our header! */
3996 if (ucode_raw->size < sizeof(*ucode)) {
3997 IWL_ERROR("File size way too small!\n");
3998 ret = -EINVAL;
3999 goto err_release;
4000 }
4001
4002 /* Data from ucode file: header followed by uCode images */
4003 ucode = (void *)ucode_raw->data;
4004
4005 ver = le32_to_cpu(ucode->ver);
4006 inst_size = le32_to_cpu(ucode->inst_size);
4007 data_size = le32_to_cpu(ucode->data_size);
4008 init_size = le32_to_cpu(ucode->init_size);
4009 init_data_size = le32_to_cpu(ucode->init_data_size);
4010 boot_size = le32_to_cpu(ucode->boot_size);
4011
4012 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
4013 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
4014 inst_size);
4015 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
4016 data_size);
4017 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
4018 init_size);
4019 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
4020 init_data_size);
4021 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
4022 boot_size);
4023
4024 /* Verify size of file vs. image size info in file's header */
4025 if (ucode_raw->size < sizeof(*ucode) +
4026 inst_size + data_size + init_size +
4027 init_data_size + boot_size) {
4028
4029 IWL_DEBUG_INFO("uCode file size %d too small\n",
4030 (int)ucode_raw->size);
4031 ret = -EINVAL;
4032 goto err_release;
4033 }
4034
4035 /* Verify that uCode images will fit in card's SRAM */
4036 if (inst_size > priv->hw_params.max_inst_size) {
4037 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
4038 inst_size);
4039 ret = -EINVAL;
4040 goto err_release;
4041 }
4042
4043 if (data_size > priv->hw_params.max_data_size) {
4044 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
4045 data_size);
4046 ret = -EINVAL;
4047 goto err_release;
4048 }
4049 if (init_size > priv->hw_params.max_inst_size) {
4050 IWL_DEBUG_INFO
4051 ("uCode init instr len %d too large to fit in\n",
4052 init_size);
4053 ret = -EINVAL;
4054 goto err_release;
4055 }
4056 if (init_data_size > priv->hw_params.max_data_size) {
4057 IWL_DEBUG_INFO
4058 ("uCode init data len %d too large to fit in\n",
4059 init_data_size);
4060 ret = -EINVAL;
4061 goto err_release;
4062 }
4063 if (boot_size > priv->hw_params.max_bsm_size) {
4064 IWL_DEBUG_INFO
4065 ("uCode boot instr len %d too large to fit in\n",
4066 boot_size);
4067 ret = -EINVAL;
4068 goto err_release;
4069 }
4070
4071 /* Allocate ucode buffers for card's bus-master loading ... */
4072
4073 /* Runtime instructions and 2 copies of data:
4074 * 1) unmodified from disk
4075 * 2) backup cache for save/restore during power-downs */
4076 priv->ucode_code.len = inst_size;
4077 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
4078
4079 priv->ucode_data.len = data_size;
4080 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
4081
4082 priv->ucode_data_backup.len = data_size;
4083 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
4084
4085 /* Initialization instructions and data */
4086 if (init_size && init_data_size) {
4087 priv->ucode_init.len = init_size;
4088 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
4089
4090 priv->ucode_init_data.len = init_data_size;
4091 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
4092
4093 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
4094 goto err_pci_alloc;
4095 }
4096
4097 /* Bootstrap (instructions only, no data) */
4098 if (boot_size) {
4099 priv->ucode_boot.len = boot_size;
4100 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
4101
4102 if (!priv->ucode_boot.v_addr)
4103 goto err_pci_alloc;
4104 }
4105
4106 /* Copy images into buffers for card's bus-master reads ... */
4107
4108 /* Runtime instructions (first block of data in file) */
4109 src = &ucode->data[0];
4110 len = priv->ucode_code.len;
4111 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
4112 memcpy(priv->ucode_code.v_addr, src, len);
4113 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
4114 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
4115
4116 /* Runtime data (2nd block)
4117 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
4118 src = &ucode->data[inst_size];
4119 len = priv->ucode_data.len;
4120 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
4121 memcpy(priv->ucode_data.v_addr, src, len);
4122 memcpy(priv->ucode_data_backup.v_addr, src, len);
4123
4124 /* Initialization instructions (3rd block) */
4125 if (init_size) {
4126 src = &ucode->data[inst_size + data_size];
4127 len = priv->ucode_init.len;
4128 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
4129 len);
4130 memcpy(priv->ucode_init.v_addr, src, len);
4131 }
4132
4133 /* Initialization data (4th block) */
4134 if (init_data_size) {
4135 src = &ucode->data[inst_size + data_size + init_size];
4136 len = priv->ucode_init_data.len;
4137 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
4138 len);
4139 memcpy(priv->ucode_init_data.v_addr, src, len);
4140 }
4141
4142 /* Bootstrap instructions (5th block) */
4143 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
4144 len = priv->ucode_boot.len;
4145 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
4146 memcpy(priv->ucode_boot.v_addr, src, len);
4147
4148 /* We have our copies now, allow OS release its copies */
4149 release_firmware(ucode_raw);
4150 return 0;
4151
4152 err_pci_alloc:
4153 IWL_ERROR("failed to allocate pci memory\n");
4154 ret = -ENOMEM;
4155 iwl4965_dealloc_ucode_pci(priv);
4156
4157 err_release:
4158 release_firmware(ucode_raw);
4159
4160 error:
4161 return ret;
4162 }
4163
4164 /**
4165 * iwl4965_alive_start - called after REPLY_ALIVE notification received
4166 * from protocol/runtime uCode (initialization uCode's
4167 * Alive gets handled by iwl4965_init_alive_start()).
4168 */
4169 static void iwl4965_alive_start(struct iwl_priv *priv)
4170 {
4171 int ret = 0;
4172
4173 IWL_DEBUG_INFO("Runtime Alive received.\n");
4174
4175 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
4176 /* We had an error bringing up the hardware, so take it
4177 * all the way back down so we can try again */
4178 IWL_DEBUG_INFO("Alive failed.\n");
4179 goto restart;
4180 }
4181
4182 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
4183 * This is a paranoid check, because we would not have gotten the
4184 * "runtime" alive if code weren't properly loaded. */
4185 if (iwl_verify_ucode(priv)) {
4186 /* Runtime instruction load was bad;
4187 * take it all the way back down so we can try again */
4188 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
4189 goto restart;
4190 }
4191
4192 iwlcore_clear_stations_table(priv);
4193
4194 ret = priv->cfg->ops->lib->alive_notify(priv);
4195 if (ret) {
4196 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
4197 ret);
4198 goto restart;
4199 }
4200
4201 /* After the ALIVE response, we can send host commands to 4965 uCode */
4202 set_bit(STATUS_ALIVE, &priv->status);
4203
4204 /* Clear out the uCode error bit if it is set */
4205 clear_bit(STATUS_FW_ERROR, &priv->status);
4206
4207 if (iwl_is_rfkill(priv))
4208 return;
4209
4210 ieee80211_start_queues(priv->hw);
4211
4212 priv->active_rate = priv->rates_mask;
4213 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
4214
4215 if (iwl_is_associated(priv)) {
4216 struct iwl4965_rxon_cmd *active_rxon =
4217 (struct iwl4965_rxon_cmd *)(&priv->active_rxon);
4218
4219 memcpy(&priv->staging_rxon, &priv->active_rxon,
4220 sizeof(priv->staging_rxon));
4221 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4222 } else {
4223 /* Initialize our rx_config data */
4224 iwl4965_connection_init_rx_config(priv);
4225 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
4226 }
4227
4228 /* Configure Bluetooth device coexistence support */
4229 iwl4965_send_bt_config(priv);
4230
4231 /* Configure the adapter for unassociated operation */
4232 iwl4965_commit_rxon(priv);
4233
4234 /* At this point, the NIC is initialized and operational */
4235 priv->notif_missed_beacons = 0;
4236
4237 iwl4965_rf_kill_ct_config(priv);
4238
4239 iwl_leds_register(priv);
4240
4241 IWL_DEBUG_INFO("ALIVE processing complete.\n");
4242 set_bit(STATUS_READY, &priv->status);
4243 wake_up_interruptible(&priv->wait_command_queue);
4244
4245 if (priv->error_recovering)
4246 iwl4965_error_recovery(priv);
4247
4248 iwlcore_low_level_notify(priv, IWLCORE_START_EVT);
4249 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
4250 return;
4251
4252 restart:
4253 queue_work(priv->workqueue, &priv->restart);
4254 }
4255
4256 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv);
4257
4258 static void __iwl4965_down(struct iwl_priv *priv)
4259 {
4260 unsigned long flags;
4261 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
4262 struct ieee80211_conf *conf = NULL;
4263
4264 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
4265
4266 conf = ieee80211_get_hw_conf(priv->hw);
4267
4268 if (!exit_pending)
4269 set_bit(STATUS_EXIT_PENDING, &priv->status);
4270
4271 iwl_leds_unregister(priv);
4272
4273 iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT);
4274
4275 iwlcore_clear_stations_table(priv);
4276
4277 /* Unblock any waiting calls */
4278 wake_up_interruptible_all(&priv->wait_command_queue);
4279
4280 /* Wipe out the EXIT_PENDING status bit if we are not actually
4281 * exiting the module */
4282 if (!exit_pending)
4283 clear_bit(STATUS_EXIT_PENDING, &priv->status);
4284
4285 /* stop and reset the on-board processor */
4286 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
4287
4288 /* tell the device to stop sending interrupts */
4289 spin_lock_irqsave(&priv->lock, flags);
4290 iwl4965_disable_interrupts(priv);
4291 spin_unlock_irqrestore(&priv->lock, flags);
4292 iwl_synchronize_irq(priv);
4293
4294 if (priv->mac80211_registered)
4295 ieee80211_stop_queues(priv->hw);
4296
4297 /* If we have not previously called iwl4965_init() then
4298 * clear all bits but the RF Kill and SUSPEND bits and return */
4299 if (!iwl_is_init(priv)) {
4300 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
4301 STATUS_RF_KILL_HW |
4302 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
4303 STATUS_RF_KILL_SW |
4304 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
4305 STATUS_GEO_CONFIGURED |
4306 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
4307 STATUS_IN_SUSPEND;
4308 goto exit;
4309 }
4310
4311 /* ...otherwise clear out all the status bits but the RF Kill and
4312 * SUSPEND bits and continue taking the NIC down. */
4313 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
4314 STATUS_RF_KILL_HW |
4315 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
4316 STATUS_RF_KILL_SW |
4317 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
4318 STATUS_GEO_CONFIGURED |
4319 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
4320 STATUS_IN_SUSPEND |
4321 test_bit(STATUS_FW_ERROR, &priv->status) <<
4322 STATUS_FW_ERROR;
4323
4324 spin_lock_irqsave(&priv->lock, flags);
4325 iwl_clear_bit(priv, CSR_GP_CNTRL,
4326 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4327 spin_unlock_irqrestore(&priv->lock, flags);
4328
4329 iwl4965_hw_txq_ctx_stop(priv);
4330 iwl4965_hw_rxq_stop(priv);
4331
4332 spin_lock_irqsave(&priv->lock, flags);
4333 if (!iwl_grab_nic_access(priv)) {
4334 iwl_write_prph(priv, APMG_CLK_DIS_REG,
4335 APMG_CLK_VAL_DMA_CLK_RQT);
4336 iwl_release_nic_access(priv);
4337 }
4338 spin_unlock_irqrestore(&priv->lock, flags);
4339
4340 udelay(5);
4341
4342 iwl4965_hw_nic_stop_master(priv);
4343 iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
4344 iwl4965_hw_nic_reset(priv);
4345 priv->cfg->ops->lib->free_shared_mem(priv);
4346
4347 exit:
4348 memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
4349
4350 if (priv->ibss_beacon)
4351 dev_kfree_skb(priv->ibss_beacon);
4352 priv->ibss_beacon = NULL;
4353
4354 /* clear out any free frames */
4355 iwl4965_clear_free_frames(priv);
4356 }
4357
4358 static void iwl4965_down(struct iwl_priv *priv)
4359 {
4360 mutex_lock(&priv->mutex);
4361 __iwl4965_down(priv);
4362 mutex_unlock(&priv->mutex);
4363
4364 iwl4965_cancel_deferred_work(priv);
4365 }
4366
4367 #define MAX_HW_RESTARTS 5
4368
4369 static int __iwl4965_up(struct iwl_priv *priv)
4370 {
4371 int i;
4372 int ret;
4373
4374 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4375 IWL_WARNING("Exit pending; will not bring the NIC up\n");
4376 return -EIO;
4377 }
4378
4379 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
4380 IWL_WARNING("Radio disabled by SW RF kill (module "
4381 "parameter)\n");
4382 iwl_rfkill_set_hw_state(priv);
4383 return -ENODEV;
4384 }
4385
4386 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
4387 IWL_ERROR("ucode not available for device bringup\n");
4388 return -EIO;
4389 }
4390
4391 /* If platform's RF_KILL switch is NOT set to KILL */
4392 if (iwl_read32(priv, CSR_GP_CNTRL) &
4393 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
4394 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4395 else {
4396 set_bit(STATUS_RF_KILL_HW, &priv->status);
4397 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
4398 iwl_rfkill_set_hw_state(priv);
4399 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
4400 return -ENODEV;
4401 }
4402 }
4403
4404 iwl_rfkill_set_hw_state(priv);
4405 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
4406
4407 ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
4408 if (ret) {
4409 IWL_ERROR("Unable to allocate shared memory\n");
4410 return ret;
4411 }
4412
4413 ret = iwl_hw_nic_init(priv);
4414 if (ret) {
4415 IWL_ERROR("Unable to init nic\n");
4416 return ret;
4417 }
4418
4419 /* make sure rfkill handshake bits are cleared */
4420 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
4421 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
4422 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4423
4424 /* clear (again), then enable host interrupts */
4425 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
4426 iwl4965_enable_interrupts(priv);
4427
4428 /* really make sure rfkill handshake bits are cleared */
4429 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
4430 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
4431
4432 /* Copy original ucode data image from disk into backup cache.
4433 * This will be used to initialize the on-board processor's
4434 * data SRAM for a clean start when the runtime program first loads. */
4435 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
4436 priv->ucode_data.len);
4437
4438 /* We return success when we resume from suspend and rf_kill is on. */
4439 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
4440 return 0;
4441
4442 for (i = 0; i < MAX_HW_RESTARTS; i++) {
4443
4444 iwlcore_clear_stations_table(priv);
4445
4446 /* load bootstrap state machine,
4447 * load bootstrap program into processor's memory,
4448 * prepare to load the "initialize" uCode */
4449 ret = priv->cfg->ops->lib->load_ucode(priv);
4450
4451 if (ret) {
4452 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
4453 continue;
4454 }
4455
4456 /* start card; "initialize" will load runtime ucode */
4457 iwl4965_nic_start(priv);
4458
4459 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
4460
4461 return 0;
4462 }
4463
4464 set_bit(STATUS_EXIT_PENDING, &priv->status);
4465 __iwl4965_down(priv);
4466
4467 /* tried to restart and config the device for as long as our
4468 * patience could withstand */
4469 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
4470 return -EIO;
4471 }
4472
4473
4474 /*****************************************************************************
4475 *
4476 * Workqueue callbacks
4477 *
4478 *****************************************************************************/
4479
4480 static void iwl4965_bg_init_alive_start(struct work_struct *data)
4481 {
4482 struct iwl_priv *priv =
4483 container_of(data, struct iwl_priv, init_alive_start.work);
4484
4485 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4486 return;
4487
4488 mutex_lock(&priv->mutex);
4489 priv->cfg->ops->lib->init_alive_start(priv);
4490 mutex_unlock(&priv->mutex);
4491 }
4492
4493 static void iwl4965_bg_alive_start(struct work_struct *data)
4494 {
4495 struct iwl_priv *priv =
4496 container_of(data, struct iwl_priv, alive_start.work);
4497
4498 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4499 return;
4500
4501 mutex_lock(&priv->mutex);
4502 iwl4965_alive_start(priv);
4503 mutex_unlock(&priv->mutex);
4504 }
4505
4506 static void iwl4965_bg_rf_kill(struct work_struct *work)
4507 {
4508 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
4509
4510 wake_up_interruptible(&priv->wait_command_queue);
4511
4512 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4513 return;
4514
4515 mutex_lock(&priv->mutex);
4516
4517 if (!iwl_is_rfkill(priv)) {
4518 IWL_DEBUG(IWL_DL_RF_KILL,
4519 "HW and/or SW RF Kill no longer active, restarting "
4520 "device\n");
4521 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
4522 queue_work(priv->workqueue, &priv->restart);
4523 } else {
4524 /* make sure mac80211 stop sending Tx frame */
4525 if (priv->mac80211_registered)
4526 ieee80211_stop_queues(priv->hw);
4527
4528 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
4529 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
4530 "disabled by SW switch\n");
4531 else
4532 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
4533 "Kill switch must be turned off for "
4534 "wireless networking to work.\n");
4535 }
4536 iwl_rfkill_set_hw_state(priv);
4537
4538 mutex_unlock(&priv->mutex);
4539 }
4540
4541 static void iwl4965_bg_set_monitor(struct work_struct *work)
4542 {
4543 struct iwl_priv *priv = container_of(work,
4544 struct iwl_priv, set_monitor);
4545
4546 IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
4547
4548 mutex_lock(&priv->mutex);
4549
4550 if (!iwl_is_ready(priv))
4551 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
4552 else
4553 if (iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR) != 0)
4554 IWL_ERROR("iwl4965_set_mode() failed\n");
4555
4556 mutex_unlock(&priv->mutex);
4557 }
4558
4559 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
4560
4561 static void iwl4965_bg_scan_check(struct work_struct *data)
4562 {
4563 struct iwl_priv *priv =
4564 container_of(data, struct iwl_priv, scan_check.work);
4565
4566 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4567 return;
4568
4569 mutex_lock(&priv->mutex);
4570 if (test_bit(STATUS_SCANNING, &priv->status) ||
4571 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
4572 IWL_DEBUG(IWL_DL_SCAN, "Scan completion watchdog resetting "
4573 "adapter (%dms)\n",
4574 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
4575
4576 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
4577 iwl4965_send_scan_abort(priv);
4578 }
4579 mutex_unlock(&priv->mutex);
4580 }
4581
4582 static void iwl4965_bg_request_scan(struct work_struct *data)
4583 {
4584 struct iwl_priv *priv =
4585 container_of(data, struct iwl_priv, request_scan);
4586 struct iwl_host_cmd cmd = {
4587 .id = REPLY_SCAN_CMD,
4588 .len = sizeof(struct iwl4965_scan_cmd),
4589 .meta.flags = CMD_SIZE_HUGE,
4590 };
4591 struct iwl4965_scan_cmd *scan;
4592 struct ieee80211_conf *conf = NULL;
4593 u16 cmd_len;
4594 enum ieee80211_band band;
4595 u8 direct_mask;
4596 int ret = 0;
4597
4598 conf = ieee80211_get_hw_conf(priv->hw);
4599
4600 mutex_lock(&priv->mutex);
4601
4602 if (!iwl_is_ready(priv)) {
4603 IWL_WARNING("request scan called when driver not ready.\n");
4604 goto done;
4605 }
4606
4607 /* Make sure the scan wasn't cancelled before this queued work
4608 * was given the chance to run... */
4609 if (!test_bit(STATUS_SCANNING, &priv->status))
4610 goto done;
4611
4612 /* This should never be called or scheduled if there is currently
4613 * a scan active in the hardware. */
4614 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
4615 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
4616 "Ignoring second request.\n");
4617 ret = -EIO;
4618 goto done;
4619 }
4620
4621 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4622 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
4623 goto done;
4624 }
4625
4626 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
4627 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
4628 goto done;
4629 }
4630
4631 if (iwl_is_rfkill(priv)) {
4632 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
4633 goto done;
4634 }
4635
4636 if (!test_bit(STATUS_READY, &priv->status)) {
4637 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
4638 goto done;
4639 }
4640
4641 if (!priv->scan_bands) {
4642 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
4643 goto done;
4644 }
4645
4646 if (!priv->scan) {
4647 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
4648 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
4649 if (!priv->scan) {
4650 ret = -ENOMEM;
4651 goto done;
4652 }
4653 }
4654 scan = priv->scan;
4655 memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
4656
4657 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
4658 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
4659
4660 if (iwl_is_associated(priv)) {
4661 u16 interval = 0;
4662 u32 extra;
4663 u32 suspend_time = 100;
4664 u32 scan_suspend_time = 100;
4665 unsigned long flags;
4666
4667 IWL_DEBUG_INFO("Scanning while associated...\n");
4668
4669 spin_lock_irqsave(&priv->lock, flags);
4670 interval = priv->beacon_int;
4671 spin_unlock_irqrestore(&priv->lock, flags);
4672
4673 scan->suspend_time = 0;
4674 scan->max_out_time = cpu_to_le32(200 * 1024);
4675 if (!interval)
4676 interval = suspend_time;
4677
4678 extra = (suspend_time / interval) << 22;
4679 scan_suspend_time = (extra |
4680 ((suspend_time % interval) * 1024));
4681 scan->suspend_time = cpu_to_le32(scan_suspend_time);
4682 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
4683 scan_suspend_time, interval);
4684 }
4685
4686 /* We should add the ability for user to lock to PASSIVE ONLY */
4687 if (priv->one_direct_scan) {
4688 IWL_DEBUG_SCAN
4689 ("Kicking off one direct scan for '%s'\n",
4690 iwl4965_escape_essid(priv->direct_ssid,
4691 priv->direct_ssid_len));
4692 scan->direct_scan[0].id = WLAN_EID_SSID;
4693 scan->direct_scan[0].len = priv->direct_ssid_len;
4694 memcpy(scan->direct_scan[0].ssid,
4695 priv->direct_ssid, priv->direct_ssid_len);
4696 direct_mask = 1;
4697 } else if (!iwl_is_associated(priv) && priv->essid_len) {
4698 IWL_DEBUG_SCAN
4699 ("Kicking off one direct scan for '%s' when not associated\n",
4700 iwl4965_escape_essid(priv->essid, priv->essid_len));
4701 scan->direct_scan[0].id = WLAN_EID_SSID;
4702 scan->direct_scan[0].len = priv->essid_len;
4703 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
4704 direct_mask = 1;
4705 } else {
4706 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
4707 direct_mask = 0;
4708 }
4709
4710 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
4711 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
4712 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
4713
4714
4715 switch (priv->scan_bands) {
4716 case 2:
4717 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
4718 scan->tx_cmd.rate_n_flags =
4719 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
4720 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
4721
4722 scan->good_CRC_th = 0;
4723 band = IEEE80211_BAND_2GHZ;
4724 break;
4725
4726 case 1:
4727 scan->tx_cmd.rate_n_flags =
4728 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
4729 RATE_MCS_ANT_B_MSK);
4730 scan->good_CRC_th = IWL_GOOD_CRC_TH;
4731 band = IEEE80211_BAND_5GHZ;
4732 break;
4733
4734 default:
4735 IWL_WARNING("Invalid scan band count\n");
4736 goto done;
4737 }
4738
4739 /* We don't build a direct scan probe request; the uCode will do
4740 * that based on the direct_mask added to each channel entry */
4741 cmd_len = iwl4965_fill_probe_req(priv, band,
4742 (struct ieee80211_mgmt *)scan->data,
4743 IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
4744
4745 scan->tx_cmd.len = cpu_to_le16(cmd_len);
4746 /* select Rx chains */
4747
4748 /* Force use of chains B and C (0x6) for scan Rx.
4749 * Avoid A (0x1) because of its off-channel reception on A-band.
4750 * MIMO is not used here, but value is required to make uCode happy. */
4751 scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
4752 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
4753 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
4754 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
4755
4756 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
4757 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
4758
4759 if (direct_mask)
4760 scan->channel_count =
4761 iwl4965_get_channels_for_scan(
4762 priv, band, 1, /* active */
4763 direct_mask,
4764 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
4765 else
4766 scan->channel_count =
4767 iwl4965_get_channels_for_scan(
4768 priv, band, 0, /* passive */
4769 direct_mask,
4770 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
4771
4772 scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK |
4773 RXON_FILTER_BCON_AWARE_MSK);
4774 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
4775 scan->channel_count * sizeof(struct iwl4965_scan_channel);
4776 cmd.data = scan;
4777 scan->len = cpu_to_le16(cmd.len);
4778
4779 set_bit(STATUS_SCAN_HW, &priv->status);
4780 ret = iwl_send_cmd_sync(priv, &cmd);
4781 if (ret)
4782 goto done;
4783
4784 queue_delayed_work(priv->workqueue, &priv->scan_check,
4785 IWL_SCAN_CHECK_WATCHDOG);
4786
4787 mutex_unlock(&priv->mutex);
4788 return;
4789
4790 done:
4791 /* inform mac80211 scan aborted */
4792 queue_work(priv->workqueue, &priv->scan_completed);
4793 mutex_unlock(&priv->mutex);
4794 }
4795
4796 static void iwl4965_bg_up(struct work_struct *data)
4797 {
4798 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
4799
4800 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4801 return;
4802
4803 mutex_lock(&priv->mutex);
4804 __iwl4965_up(priv);
4805 mutex_unlock(&priv->mutex);
4806 }
4807
4808 static void iwl4965_bg_restart(struct work_struct *data)
4809 {
4810 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
4811
4812 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4813 return;
4814
4815 iwl4965_down(priv);
4816 queue_work(priv->workqueue, &priv->up);
4817 }
4818
4819 static void iwl4965_bg_rx_replenish(struct work_struct *data)
4820 {
4821 struct iwl_priv *priv =
4822 container_of(data, struct iwl_priv, rx_replenish);
4823
4824 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4825 return;
4826
4827 mutex_lock(&priv->mutex);
4828 iwl_rx_replenish(priv);
4829 mutex_unlock(&priv->mutex);
4830 }
4831
4832 #define IWL_DELAY_NEXT_SCAN (HZ*2)
4833
4834 static void iwl4965_post_associate(struct iwl_priv *priv)
4835 {
4836 struct ieee80211_conf *conf = NULL;
4837 int ret = 0;
4838 DECLARE_MAC_BUF(mac);
4839
4840 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
4841 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
4842 return;
4843 }
4844
4845 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
4846 priv->assoc_id,
4847 print_mac(mac, priv->active_rxon.bssid_addr));
4848
4849
4850 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4851 return;
4852
4853
4854 if (!priv->vif || !priv->is_open)
4855 return;
4856
4857 iwl4965_scan_cancel_timeout(priv, 200);
4858
4859 conf = ieee80211_get_hw_conf(priv->hw);
4860
4861 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4862 iwl4965_commit_rxon(priv);
4863
4864 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
4865 iwl4965_setup_rxon_timing(priv);
4866 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
4867 sizeof(priv->rxon_timing), &priv->rxon_timing);
4868 if (ret)
4869 IWL_WARNING("REPLY_RXON_TIMING failed - "
4870 "Attempting to continue.\n");
4871
4872 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
4873
4874 #ifdef CONFIG_IWL4965_HT
4875 if (priv->current_ht_config.is_ht)
4876 iwl_set_rxon_ht(priv, &priv->current_ht_config);
4877 #endif /* CONFIG_IWL4965_HT*/
4878 iwl_set_rxon_chain(priv);
4879 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
4880
4881 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
4882 priv->assoc_id, priv->beacon_int);
4883
4884 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
4885 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
4886 else
4887 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
4888
4889 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
4890 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
4891 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
4892 else
4893 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
4894
4895 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
4896 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
4897
4898 }
4899
4900 iwl4965_commit_rxon(priv);
4901
4902 switch (priv->iw_mode) {
4903 case IEEE80211_IF_TYPE_STA:
4904 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
4905 break;
4906
4907 case IEEE80211_IF_TYPE_IBSS:
4908
4909 /* clear out the station table */
4910 iwlcore_clear_stations_table(priv);
4911
4912 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
4913 iwl4965_rxon_add_station(priv, priv->bssid, 0);
4914 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
4915 iwl4965_send_beacon_cmd(priv);
4916
4917 break;
4918
4919 default:
4920 IWL_ERROR("%s Should not be called in %d mode\n",
4921 __FUNCTION__, priv->iw_mode);
4922 break;
4923 }
4924
4925 iwl4965_sequence_reset(priv);
4926
4927 /* Enable Rx differential gain and sensitivity calibrations */
4928 iwl_chain_noise_reset(priv);
4929 priv->start_calib = 1;
4930
4931 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
4932 priv->assoc_station_added = 1;
4933
4934 iwl4965_activate_qos(priv, 0);
4935
4936 iwl_power_update_mode(priv, 0);
4937 /* we have just associated, don't start scan too early */
4938 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
4939 }
4940
4941
4942 static void iwl4965_bg_post_associate(struct work_struct *data)
4943 {
4944 struct iwl_priv *priv = container_of(data, struct iwl_priv,
4945 post_associate.work);
4946
4947 mutex_lock(&priv->mutex);
4948 iwl4965_post_associate(priv);
4949 mutex_unlock(&priv->mutex);
4950
4951 }
4952
4953 static void iwl4965_bg_abort_scan(struct work_struct *work)
4954 {
4955 struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
4956
4957 if (!iwl_is_ready(priv))
4958 return;
4959
4960 mutex_lock(&priv->mutex);
4961
4962 set_bit(STATUS_SCAN_ABORTING, &priv->status);
4963 iwl4965_send_scan_abort(priv);
4964
4965 mutex_unlock(&priv->mutex);
4966 }
4967
4968 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
4969
4970 static void iwl4965_bg_scan_completed(struct work_struct *work)
4971 {
4972 struct iwl_priv *priv =
4973 container_of(work, struct iwl_priv, scan_completed);
4974
4975 IWL_DEBUG(IWL_DL_SCAN, "SCAN complete scan\n");
4976
4977 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4978 return;
4979
4980 if (test_bit(STATUS_CONF_PENDING, &priv->status))
4981 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
4982
4983 ieee80211_scan_completed(priv->hw);
4984
4985 /* Since setting the TXPOWER may have been deferred while
4986 * performing the scan, fire one off */
4987 mutex_lock(&priv->mutex);
4988 iwl4965_hw_reg_send_txpower(priv);
4989 mutex_unlock(&priv->mutex);
4990 }
4991
4992 /*****************************************************************************
4993 *
4994 * mac80211 entry point functions
4995 *
4996 *****************************************************************************/
4997
4998 #define UCODE_READY_TIMEOUT (2 * HZ)
4999
5000 static int iwl4965_mac_start(struct ieee80211_hw *hw)
5001 {
5002 struct iwl_priv *priv = hw->priv;
5003 int ret;
5004
5005 IWL_DEBUG_MAC80211("enter\n");
5006
5007 if (pci_enable_device(priv->pci_dev)) {
5008 IWL_ERROR("Fail to pci_enable_device\n");
5009 return -ENODEV;
5010 }
5011 pci_restore_state(priv->pci_dev);
5012 pci_enable_msi(priv->pci_dev);
5013
5014 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
5015 DRV_NAME, priv);
5016 if (ret) {
5017 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
5018 goto out_disable_msi;
5019 }
5020
5021 /* we should be verifying the device is ready to be opened */
5022 mutex_lock(&priv->mutex);
5023
5024 memset(&priv->staging_rxon, 0, sizeof(struct iwl4965_rxon_cmd));
5025 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
5026 * ucode filename and max sizes are card-specific. */
5027
5028 if (!priv->ucode_code.len) {
5029 ret = iwl4965_read_ucode(priv);
5030 if (ret) {
5031 IWL_ERROR("Could not read microcode: %d\n", ret);
5032 mutex_unlock(&priv->mutex);
5033 goto out_release_irq;
5034 }
5035 }
5036
5037 ret = __iwl4965_up(priv);
5038
5039 mutex_unlock(&priv->mutex);
5040
5041 if (ret)
5042 goto out_release_irq;
5043
5044 IWL_DEBUG_INFO("Start UP work done.\n");
5045
5046 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
5047 return 0;
5048
5049 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
5050 * mac80211 will not be run successfully. */
5051 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
5052 test_bit(STATUS_READY, &priv->status),
5053 UCODE_READY_TIMEOUT);
5054 if (!ret) {
5055 if (!test_bit(STATUS_READY, &priv->status)) {
5056 IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
5057 jiffies_to_msecs(UCODE_READY_TIMEOUT));
5058 ret = -ETIMEDOUT;
5059 goto out_release_irq;
5060 }
5061 }
5062
5063 priv->is_open = 1;
5064 IWL_DEBUG_MAC80211("leave\n");
5065 return 0;
5066
5067 out_release_irq:
5068 free_irq(priv->pci_dev->irq, priv);
5069 out_disable_msi:
5070 pci_disable_msi(priv->pci_dev);
5071 pci_disable_device(priv->pci_dev);
5072 priv->is_open = 0;
5073 IWL_DEBUG_MAC80211("leave - failed\n");
5074 return ret;
5075 }
5076
5077 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
5078 {
5079 struct iwl_priv *priv = hw->priv;
5080
5081 IWL_DEBUG_MAC80211("enter\n");
5082
5083 if (!priv->is_open) {
5084 IWL_DEBUG_MAC80211("leave - skip\n");
5085 return;
5086 }
5087
5088 priv->is_open = 0;
5089
5090 if (iwl_is_ready_rf(priv)) {
5091 /* stop mac, cancel any scan request and clear
5092 * RXON_FILTER_ASSOC_MSK BIT
5093 */
5094 mutex_lock(&priv->mutex);
5095 iwl4965_scan_cancel_timeout(priv, 100);
5096 cancel_delayed_work(&priv->post_associate);
5097 mutex_unlock(&priv->mutex);
5098 }
5099
5100 iwl4965_down(priv);
5101
5102 flush_workqueue(priv->workqueue);
5103 free_irq(priv->pci_dev->irq, priv);
5104 pci_disable_msi(priv->pci_dev);
5105 pci_save_state(priv->pci_dev);
5106 pci_disable_device(priv->pci_dev);
5107
5108 IWL_DEBUG_MAC80211("leave\n");
5109 }
5110
5111 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
5112 struct ieee80211_tx_control *ctl)
5113 {
5114 struct iwl_priv *priv = hw->priv;
5115
5116 IWL_DEBUG_MAC80211("enter\n");
5117
5118 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
5119 IWL_DEBUG_MAC80211("leave - monitor\n");
5120 return -1;
5121 }
5122
5123 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
5124 ctl->tx_rate->bitrate);
5125
5126 if (iwl4965_tx_skb(priv, skb, ctl))
5127 dev_kfree_skb_any(skb);
5128
5129 IWL_DEBUG_MAC80211("leave\n");
5130 return 0;
5131 }
5132
5133 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
5134 struct ieee80211_if_init_conf *conf)
5135 {
5136 struct iwl_priv *priv = hw->priv;
5137 unsigned long flags;
5138 DECLARE_MAC_BUF(mac);
5139
5140 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
5141
5142 if (priv->vif) {
5143 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
5144 return -EOPNOTSUPP;
5145 }
5146
5147 spin_lock_irqsave(&priv->lock, flags);
5148 priv->vif = conf->vif;
5149
5150 spin_unlock_irqrestore(&priv->lock, flags);
5151
5152 mutex_lock(&priv->mutex);
5153
5154 if (conf->mac_addr) {
5155 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
5156 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
5157 }
5158
5159 if (iwl_is_ready(priv))
5160 iwl4965_set_mode(priv, conf->type);
5161
5162 mutex_unlock(&priv->mutex);
5163
5164 IWL_DEBUG_MAC80211("leave\n");
5165 return 0;
5166 }
5167
5168 /**
5169 * iwl4965_mac_config - mac80211 config callback
5170 *
5171 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
5172 * be set inappropriately and the driver currently sets the hardware up to
5173 * use it whenever needed.
5174 */
5175 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
5176 {
5177 struct iwl_priv *priv = hw->priv;
5178 const struct iwl_channel_info *ch_info;
5179 unsigned long flags;
5180 int ret = 0;
5181
5182 mutex_lock(&priv->mutex);
5183 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
5184
5185 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
5186
5187 if (!iwl_is_ready(priv)) {
5188 IWL_DEBUG_MAC80211("leave - not ready\n");
5189 ret = -EIO;
5190 goto out;
5191 }
5192
5193 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
5194 test_bit(STATUS_SCANNING, &priv->status))) {
5195 IWL_DEBUG_MAC80211("leave - scanning\n");
5196 set_bit(STATUS_CONF_PENDING, &priv->status);
5197 mutex_unlock(&priv->mutex);
5198 return 0;
5199 }
5200
5201 spin_lock_irqsave(&priv->lock, flags);
5202
5203 ch_info = iwl_get_channel_info(priv, conf->channel->band,
5204 ieee80211_frequency_to_channel(conf->channel->center_freq));
5205 if (!is_channel_valid(ch_info)) {
5206 IWL_DEBUG_MAC80211("leave - invalid channel\n");
5207 spin_unlock_irqrestore(&priv->lock, flags);
5208 ret = -EINVAL;
5209 goto out;
5210 }
5211
5212 #ifdef CONFIG_IWL4965_HT
5213 /* if we are switching from ht to 2.4 clear flags
5214 * from any ht related info since 2.4 does not
5215 * support ht */
5216 if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
5217 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
5218 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
5219 #endif
5220 )
5221 priv->staging_rxon.flags = 0;
5222 #endif /* CONFIG_IWL4965_HT */
5223
5224 iwl_set_rxon_channel(priv, conf->channel->band,
5225 ieee80211_frequency_to_channel(conf->channel->center_freq));
5226
5227 iwl4965_set_flags_for_phymode(priv, conf->channel->band);
5228
5229 /* The list of supported rates and rate mask can be different
5230 * for each band; since the band may have changed, reset
5231 * the rate mask to what mac80211 lists */
5232 iwl4965_set_rate(priv);
5233
5234 spin_unlock_irqrestore(&priv->lock, flags);
5235
5236 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
5237 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
5238 iwl4965_hw_channel_switch(priv, conf->channel);
5239 goto out;
5240 }
5241 #endif
5242
5243 if (priv->cfg->ops->lib->radio_kill_sw)
5244 priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled);
5245
5246 if (!conf->radio_enabled) {
5247 IWL_DEBUG_MAC80211("leave - radio disabled\n");
5248 goto out;
5249 }
5250
5251 if (iwl_is_rfkill(priv)) {
5252 IWL_DEBUG_MAC80211("leave - RF kill\n");
5253 ret = -EIO;
5254 goto out;
5255 }
5256
5257 iwl4965_set_rate(priv);
5258
5259 if (memcmp(&priv->active_rxon,
5260 &priv->staging_rxon, sizeof(priv->staging_rxon)))
5261 iwl4965_commit_rxon(priv);
5262 else
5263 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
5264
5265 IWL_DEBUG_MAC80211("leave\n");
5266
5267 out:
5268 clear_bit(STATUS_CONF_PENDING, &priv->status);
5269 mutex_unlock(&priv->mutex);
5270 return ret;
5271 }
5272
5273 static void iwl4965_config_ap(struct iwl_priv *priv)
5274 {
5275 int ret = 0;
5276
5277 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5278 return;
5279
5280 /* The following should be done only at AP bring up */
5281 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
5282
5283 /* RXON - unassoc (to set timing command) */
5284 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5285 iwl4965_commit_rxon(priv);
5286
5287 /* RXON Timing */
5288 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
5289 iwl4965_setup_rxon_timing(priv);
5290 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
5291 sizeof(priv->rxon_timing), &priv->rxon_timing);
5292 if (ret)
5293 IWL_WARNING("REPLY_RXON_TIMING failed - "
5294 "Attempting to continue.\n");
5295
5296 iwl_set_rxon_chain(priv);
5297
5298 /* FIXME: what should be the assoc_id for AP? */
5299 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
5300 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
5301 priv->staging_rxon.flags |=
5302 RXON_FLG_SHORT_PREAMBLE_MSK;
5303 else
5304 priv->staging_rxon.flags &=
5305 ~RXON_FLG_SHORT_PREAMBLE_MSK;
5306
5307 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
5308 if (priv->assoc_capability &
5309 WLAN_CAPABILITY_SHORT_SLOT_TIME)
5310 priv->staging_rxon.flags |=
5311 RXON_FLG_SHORT_SLOT_MSK;
5312 else
5313 priv->staging_rxon.flags &=
5314 ~RXON_FLG_SHORT_SLOT_MSK;
5315
5316 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
5317 priv->staging_rxon.flags &=
5318 ~RXON_FLG_SHORT_SLOT_MSK;
5319 }
5320 /* restore RXON assoc */
5321 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
5322 iwl4965_commit_rxon(priv);
5323 iwl4965_activate_qos(priv, 1);
5324 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
5325 }
5326 iwl4965_send_beacon_cmd(priv);
5327
5328 /* FIXME - we need to add code here to detect a totally new
5329 * configuration, reset the AP, unassoc, rxon timing, assoc,
5330 * clear sta table, add BCAST sta... */
5331 }
5332
5333 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
5334 struct ieee80211_vif *vif,
5335 struct ieee80211_if_conf *conf)
5336 {
5337 struct iwl_priv *priv = hw->priv;
5338 DECLARE_MAC_BUF(mac);
5339 unsigned long flags;
5340 int rc;
5341
5342 if (conf == NULL)
5343 return -EIO;
5344
5345 if (priv->vif != vif) {
5346 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
5347 return 0;
5348 }
5349
5350 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
5351 (!conf->beacon || !conf->ssid_len)) {
5352 IWL_DEBUG_MAC80211
5353 ("Leaving in AP mode because HostAPD is not ready.\n");
5354 return 0;
5355 }
5356
5357 if (!iwl_is_alive(priv))
5358 return -EAGAIN;
5359
5360 mutex_lock(&priv->mutex);
5361
5362 if (conf->bssid)
5363 IWL_DEBUG_MAC80211("bssid: %s\n",
5364 print_mac(mac, conf->bssid));
5365
5366 /*
5367 * very dubious code was here; the probe filtering flag is never set:
5368 *
5369 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
5370 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
5371 */
5372
5373 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
5374 if (!conf->bssid) {
5375 conf->bssid = priv->mac_addr;
5376 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
5377 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
5378 print_mac(mac, conf->bssid));
5379 }
5380 if (priv->ibss_beacon)
5381 dev_kfree_skb(priv->ibss_beacon);
5382
5383 priv->ibss_beacon = conf->beacon;
5384 }
5385
5386 if (iwl_is_rfkill(priv))
5387 goto done;
5388
5389 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
5390 !is_multicast_ether_addr(conf->bssid)) {
5391 /* If there is currently a HW scan going on in the background
5392 * then we need to cancel it else the RXON below will fail. */
5393 if (iwl4965_scan_cancel_timeout(priv, 100)) {
5394 IWL_WARNING("Aborted scan still in progress "
5395 "after 100ms\n");
5396 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
5397 mutex_unlock(&priv->mutex);
5398 return -EAGAIN;
5399 }
5400 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
5401
5402 /* TODO: Audit driver for usage of these members and see
5403 * if mac80211 deprecates them (priv->bssid looks like it
5404 * shouldn't be there, but I haven't scanned the IBSS code
5405 * to verify) - jpk */
5406 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
5407
5408 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
5409 iwl4965_config_ap(priv);
5410 else {
5411 rc = iwl4965_commit_rxon(priv);
5412 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
5413 iwl4965_rxon_add_station(
5414 priv, priv->active_rxon.bssid_addr, 1);
5415 }
5416
5417 } else {
5418 iwl4965_scan_cancel_timeout(priv, 100);
5419 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5420 iwl4965_commit_rxon(priv);
5421 }
5422
5423 done:
5424 spin_lock_irqsave(&priv->lock, flags);
5425 if (!conf->ssid_len)
5426 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
5427 else
5428 memcpy(priv->essid, conf->ssid, conf->ssid_len);
5429
5430 priv->essid_len = conf->ssid_len;
5431 spin_unlock_irqrestore(&priv->lock, flags);
5432
5433 IWL_DEBUG_MAC80211("leave\n");
5434 mutex_unlock(&priv->mutex);
5435
5436 return 0;
5437 }
5438
5439 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
5440 unsigned int changed_flags,
5441 unsigned int *total_flags,
5442 int mc_count, struct dev_addr_list *mc_list)
5443 {
5444 /*
5445 * XXX: dummy
5446 * see also iwl4965_connection_init_rx_config
5447 */
5448 struct iwl_priv *priv = hw->priv;
5449 int new_flags = 0;
5450 if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
5451 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
5452 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
5453 IEEE80211_IF_TYPE_MNTR,
5454 changed_flags, *total_flags);
5455 /* queue work 'cuz mac80211 is holding a lock which
5456 * prevents us from issuing (synchronous) f/w cmds */
5457 queue_work(priv->workqueue, &priv->set_monitor);
5458 new_flags &= FIF_PROMISC_IN_BSS |
5459 FIF_OTHER_BSS |
5460 FIF_ALLMULTI;
5461 }
5462 }
5463 *total_flags = new_flags;
5464 }
5465
5466 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
5467 struct ieee80211_if_init_conf *conf)
5468 {
5469 struct iwl_priv *priv = hw->priv;
5470
5471 IWL_DEBUG_MAC80211("enter\n");
5472
5473 mutex_lock(&priv->mutex);
5474
5475 if (iwl_is_ready_rf(priv)) {
5476 iwl4965_scan_cancel_timeout(priv, 100);
5477 cancel_delayed_work(&priv->post_associate);
5478 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5479 iwl4965_commit_rxon(priv);
5480 }
5481 if (priv->vif == conf->vif) {
5482 priv->vif = NULL;
5483 memset(priv->bssid, 0, ETH_ALEN);
5484 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
5485 priv->essid_len = 0;
5486 }
5487 mutex_unlock(&priv->mutex);
5488
5489 IWL_DEBUG_MAC80211("leave\n");
5490
5491 }
5492
5493 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
5494 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
5495 struct ieee80211_vif *vif,
5496 struct ieee80211_bss_conf *bss_conf,
5497 u32 changes)
5498 {
5499 struct iwl_priv *priv = hw->priv;
5500
5501 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
5502
5503 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
5504 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
5505 bss_conf->use_short_preamble);
5506 if (bss_conf->use_short_preamble)
5507 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
5508 else
5509 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
5510 }
5511
5512 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
5513 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
5514 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
5515 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
5516 else
5517 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
5518 }
5519
5520 if (changes & BSS_CHANGED_HT) {
5521 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
5522 iwl4965_ht_conf(priv, bss_conf);
5523 iwl_set_rxon_chain(priv);
5524 }
5525
5526 if (changes & BSS_CHANGED_ASSOC) {
5527 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
5528 /* This should never happen as this function should
5529 * never be called from interrupt context. */
5530 if (WARN_ON_ONCE(in_interrupt()))
5531 return;
5532 if (bss_conf->assoc) {
5533 priv->assoc_id = bss_conf->aid;
5534 priv->beacon_int = bss_conf->beacon_int;
5535 priv->timestamp = bss_conf->timestamp;
5536 priv->assoc_capability = bss_conf->assoc_capability;
5537 priv->next_scan_jiffies = jiffies +
5538 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
5539 mutex_lock(&priv->mutex);
5540 iwl4965_post_associate(priv);
5541 mutex_unlock(&priv->mutex);
5542 } else {
5543 priv->assoc_id = 0;
5544 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
5545 }
5546 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
5547 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
5548 iwl_send_rxon_assoc(priv);
5549 }
5550
5551 }
5552
5553 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
5554 {
5555 int rc = 0;
5556 unsigned long flags;
5557 struct iwl_priv *priv = hw->priv;
5558
5559 IWL_DEBUG_MAC80211("enter\n");
5560
5561 mutex_lock(&priv->mutex);
5562 spin_lock_irqsave(&priv->lock, flags);
5563
5564 if (!iwl_is_ready_rf(priv)) {
5565 rc = -EIO;
5566 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
5567 goto out_unlock;
5568 }
5569
5570 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
5571 rc = -EIO;
5572 IWL_ERROR("ERROR: APs don't scan\n");
5573 goto out_unlock;
5574 }
5575
5576 /* we don't schedule scan within next_scan_jiffies period */
5577 if (priv->next_scan_jiffies &&
5578 time_after(priv->next_scan_jiffies, jiffies)) {
5579 rc = -EAGAIN;
5580 goto out_unlock;
5581 }
5582 /* if we just finished scan ask for delay */
5583 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
5584 IWL_DELAY_NEXT_SCAN, jiffies)) {
5585 rc = -EAGAIN;
5586 goto out_unlock;
5587 }
5588 if (len) {
5589 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
5590 iwl4965_escape_essid(ssid, len), (int)len);
5591
5592 priv->one_direct_scan = 1;
5593 priv->direct_ssid_len = (u8)
5594 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
5595 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
5596 } else
5597 priv->one_direct_scan = 0;
5598
5599 rc = iwl4965_scan_initiate(priv);
5600
5601 IWL_DEBUG_MAC80211("leave\n");
5602
5603 out_unlock:
5604 spin_unlock_irqrestore(&priv->lock, flags);
5605 mutex_unlock(&priv->mutex);
5606
5607 return rc;
5608 }
5609
5610 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
5611 struct ieee80211_key_conf *keyconf, const u8 *addr,
5612 u32 iv32, u16 *phase1key)
5613 {
5614 struct iwl_priv *priv = hw->priv;
5615 u8 sta_id = IWL_INVALID_STATION;
5616 unsigned long flags;
5617 __le16 key_flags = 0;
5618 int i;
5619 DECLARE_MAC_BUF(mac);
5620
5621 IWL_DEBUG_MAC80211("enter\n");
5622
5623 sta_id = iwl_find_station(priv, addr);
5624 if (sta_id == IWL_INVALID_STATION) {
5625 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
5626 print_mac(mac, addr));
5627 return;
5628 }
5629
5630 iwl4965_scan_cancel_timeout(priv, 100);
5631
5632 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
5633 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
5634 key_flags &= ~STA_KEY_FLG_INVALID;
5635
5636 if (sta_id == priv->hw_params.bcast_sta_id)
5637 key_flags |= STA_KEY_MULTICAST_MSK;
5638
5639 spin_lock_irqsave(&priv->sta_lock, flags);
5640
5641 priv->stations[sta_id].sta.key.key_flags = key_flags;
5642 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
5643
5644 for (i = 0; i < 5; i++)
5645 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
5646 cpu_to_le16(phase1key[i]);
5647
5648 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
5649 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
5650
5651 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
5652
5653 spin_unlock_irqrestore(&priv->sta_lock, flags);
5654
5655 IWL_DEBUG_MAC80211("leave\n");
5656 }
5657
5658 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
5659 const u8 *local_addr, const u8 *addr,
5660 struct ieee80211_key_conf *key)
5661 {
5662 struct iwl_priv *priv = hw->priv;
5663 DECLARE_MAC_BUF(mac);
5664 int ret = 0;
5665 u8 sta_id = IWL_INVALID_STATION;
5666 u8 is_default_wep_key = 0;
5667
5668 IWL_DEBUG_MAC80211("enter\n");
5669
5670 if (priv->hw_params.sw_crypto) {
5671 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
5672 return -EOPNOTSUPP;
5673 }
5674
5675 if (is_zero_ether_addr(addr))
5676 /* only support pairwise keys */
5677 return -EOPNOTSUPP;
5678
5679 sta_id = iwl_find_station(priv, addr);
5680 if (sta_id == IWL_INVALID_STATION) {
5681 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
5682 print_mac(mac, addr));
5683 return -EINVAL;
5684
5685 }
5686
5687 mutex_lock(&priv->mutex);
5688 iwl4965_scan_cancel_timeout(priv, 100);
5689 mutex_unlock(&priv->mutex);
5690
5691 /* If we are getting WEP group key and we didn't receive any key mapping
5692 * so far, we are in legacy wep mode (group key only), otherwise we are
5693 * in 1X mode.
5694 * In legacy wep mode, we use another host command to the uCode */
5695 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
5696 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
5697 if (cmd == SET_KEY)
5698 is_default_wep_key = !priv->key_mapping_key;
5699 else
5700 is_default_wep_key = priv->default_wep_key;
5701 }
5702
5703 switch (cmd) {
5704 case SET_KEY:
5705 if (is_default_wep_key)
5706 ret = iwl_set_default_wep_key(priv, key);
5707 else
5708 ret = iwl_set_dynamic_key(priv, key, sta_id);
5709
5710 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
5711 break;
5712 case DISABLE_KEY:
5713 if (is_default_wep_key)
5714 ret = iwl_remove_default_wep_key(priv, key);
5715 else
5716 ret = iwl_remove_dynamic_key(priv, key, sta_id);
5717
5718 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
5719 break;
5720 default:
5721 ret = -EINVAL;
5722 }
5723
5724 IWL_DEBUG_MAC80211("leave\n");
5725
5726 return ret;
5727 }
5728
5729 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
5730 const struct ieee80211_tx_queue_params *params)
5731 {
5732 struct iwl_priv *priv = hw->priv;
5733 unsigned long flags;
5734 int q;
5735
5736 IWL_DEBUG_MAC80211("enter\n");
5737
5738 if (!iwl_is_ready_rf(priv)) {
5739 IWL_DEBUG_MAC80211("leave - RF not ready\n");
5740 return -EIO;
5741 }
5742
5743 if (queue >= AC_NUM) {
5744 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
5745 return 0;
5746 }
5747
5748 if (!priv->qos_data.qos_enable) {
5749 priv->qos_data.qos_active = 0;
5750 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
5751 return 0;
5752 }
5753 q = AC_NUM - 1 - queue;
5754
5755 spin_lock_irqsave(&priv->lock, flags);
5756
5757 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
5758 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
5759 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
5760 priv->qos_data.def_qos_parm.ac[q].edca_txop =
5761 cpu_to_le16((params->txop * 32));
5762
5763 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
5764 priv->qos_data.qos_active = 1;
5765
5766 spin_unlock_irqrestore(&priv->lock, flags);
5767
5768 mutex_lock(&priv->mutex);
5769 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
5770 iwl4965_activate_qos(priv, 1);
5771 else if (priv->assoc_id && iwl_is_associated(priv))
5772 iwl4965_activate_qos(priv, 0);
5773
5774 mutex_unlock(&priv->mutex);
5775
5776 IWL_DEBUG_MAC80211("leave\n");
5777 return 0;
5778 }
5779
5780 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
5781 struct ieee80211_tx_queue_stats *stats)
5782 {
5783 struct iwl_priv *priv = hw->priv;
5784 int i, avail;
5785 struct iwl_tx_queue *txq;
5786 struct iwl4965_queue *q;
5787 unsigned long flags;
5788
5789 IWL_DEBUG_MAC80211("enter\n");
5790
5791 if (!iwl_is_ready_rf(priv)) {
5792 IWL_DEBUG_MAC80211("leave - RF not ready\n");
5793 return -EIO;
5794 }
5795
5796 spin_lock_irqsave(&priv->lock, flags);
5797
5798 for (i = 0; i < AC_NUM; i++) {
5799 txq = &priv->txq[i];
5800 q = &txq->q;
5801 avail = iwl4965_queue_space(q);
5802
5803 stats[i].len = q->n_window - avail;
5804 stats[i].limit = q->n_window - q->high_mark;
5805 stats[i].count = q->n_window;
5806
5807 }
5808 spin_unlock_irqrestore(&priv->lock, flags);
5809
5810 IWL_DEBUG_MAC80211("leave\n");
5811
5812 return 0;
5813 }
5814
5815 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
5816 struct ieee80211_low_level_stats *stats)
5817 {
5818 struct iwl_priv *priv = hw->priv;
5819
5820 priv = hw->priv;
5821 IWL_DEBUG_MAC80211("enter\n");
5822 IWL_DEBUG_MAC80211("leave\n");
5823
5824 return 0;
5825 }
5826
5827 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
5828 {
5829 struct iwl_priv *priv;
5830
5831 priv = hw->priv;
5832 IWL_DEBUG_MAC80211("enter\n");
5833 IWL_DEBUG_MAC80211("leave\n");
5834
5835 return 0;
5836 }
5837
5838 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
5839 {
5840 struct iwl_priv *priv = hw->priv;
5841 unsigned long flags;
5842
5843 mutex_lock(&priv->mutex);
5844 IWL_DEBUG_MAC80211("enter\n");
5845
5846 priv->lq_mngr.lq_ready = 0;
5847 #ifdef CONFIG_IWL4965_HT
5848 spin_lock_irqsave(&priv->lock, flags);
5849 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
5850 spin_unlock_irqrestore(&priv->lock, flags);
5851 #endif /* CONFIG_IWL4965_HT */
5852
5853 iwl_reset_qos(priv);
5854
5855 cancel_delayed_work(&priv->post_associate);
5856
5857 spin_lock_irqsave(&priv->lock, flags);
5858 priv->assoc_id = 0;
5859 priv->assoc_capability = 0;
5860 priv->assoc_station_added = 0;
5861
5862 /* new association get rid of ibss beacon skb */
5863 if (priv->ibss_beacon)
5864 dev_kfree_skb(priv->ibss_beacon);
5865
5866 priv->ibss_beacon = NULL;
5867
5868 priv->beacon_int = priv->hw->conf.beacon_int;
5869 priv->timestamp = 0;
5870 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
5871 priv->beacon_int = 0;
5872
5873 spin_unlock_irqrestore(&priv->lock, flags);
5874
5875 if (!iwl_is_ready_rf(priv)) {
5876 IWL_DEBUG_MAC80211("leave - not ready\n");
5877 mutex_unlock(&priv->mutex);
5878 return;
5879 }
5880
5881 /* we are restarting association process
5882 * clear RXON_FILTER_ASSOC_MSK bit
5883 */
5884 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
5885 iwl4965_scan_cancel_timeout(priv, 100);
5886 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5887 iwl4965_commit_rxon(priv);
5888 }
5889
5890 iwl_power_update_mode(priv, 0);
5891
5892 /* Per mac80211.h: This is only used in IBSS mode... */
5893 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
5894
5895 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
5896 mutex_unlock(&priv->mutex);
5897 return;
5898 }
5899
5900 iwl4965_set_rate(priv);
5901
5902 mutex_unlock(&priv->mutex);
5903
5904 IWL_DEBUG_MAC80211("leave\n");
5905 }
5906
5907 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
5908 struct ieee80211_tx_control *control)
5909 {
5910 struct iwl_priv *priv = hw->priv;
5911 unsigned long flags;
5912
5913 mutex_lock(&priv->mutex);
5914 IWL_DEBUG_MAC80211("enter\n");
5915
5916 if (!iwl_is_ready_rf(priv)) {
5917 IWL_DEBUG_MAC80211("leave - RF not ready\n");
5918 mutex_unlock(&priv->mutex);
5919 return -EIO;
5920 }
5921
5922 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
5923 IWL_DEBUG_MAC80211("leave - not IBSS\n");
5924 mutex_unlock(&priv->mutex);
5925 return -EIO;
5926 }
5927
5928 spin_lock_irqsave(&priv->lock, flags);
5929
5930 if (priv->ibss_beacon)
5931 dev_kfree_skb(priv->ibss_beacon);
5932
5933 priv->ibss_beacon = skb;
5934
5935 priv->assoc_id = 0;
5936
5937 IWL_DEBUG_MAC80211("leave\n");
5938 spin_unlock_irqrestore(&priv->lock, flags);
5939
5940 iwl_reset_qos(priv);
5941
5942 queue_work(priv->workqueue, &priv->post_associate.work);
5943
5944 mutex_unlock(&priv->mutex);
5945
5946 return 0;
5947 }
5948
5949 /*****************************************************************************
5950 *
5951 * sysfs attributes
5952 *
5953 *****************************************************************************/
5954
5955 #ifdef CONFIG_IWLWIFI_DEBUG
5956
5957 /*
5958 * The following adds a new attribute to the sysfs representation
5959 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
5960 * used for controlling the debug level.
5961 *
5962 * See the level definitions in iwl for details.
5963 */
5964
5965 static ssize_t show_debug_level(struct device *d,
5966 struct device_attribute *attr, char *buf)
5967 {
5968 struct iwl_priv *priv = d->driver_data;
5969
5970 return sprintf(buf, "0x%08X\n", priv->debug_level);
5971 }
5972 static ssize_t store_debug_level(struct device *d,
5973 struct device_attribute *attr,
5974 const char *buf, size_t count)
5975 {
5976 struct iwl_priv *priv = d->driver_data;
5977 char *p = (char *)buf;
5978 u32 val;
5979
5980 val = simple_strtoul(p, &p, 0);
5981 if (p == buf)
5982 printk(KERN_INFO DRV_NAME
5983 ": %s is not in hex or decimal form.\n", buf);
5984 else
5985 priv->debug_level = val;
5986
5987 return strnlen(buf, count);
5988 }
5989
5990 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
5991 show_debug_level, store_debug_level);
5992
5993
5994 #endif /* CONFIG_IWLWIFI_DEBUG */
5995
5996
5997 static ssize_t show_version(struct device *d,
5998 struct device_attribute *attr, char *buf)
5999 {
6000 struct iwl_priv *priv = d->driver_data;
6001 struct iwl4965_alive_resp *palive = &priv->card_alive;
6002
6003 if (palive->is_valid)
6004 return sprintf(buf, "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
6005 "fw type: 0x%01X 0x%01X\n",
6006 palive->ucode_major, palive->ucode_minor,
6007 palive->sw_rev[0], palive->sw_rev[1],
6008 palive->ver_type, palive->ver_subtype);
6009
6010 else
6011 return sprintf(buf, "fw not loaded\n");
6012 }
6013
6014 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
6015
6016 static ssize_t show_temperature(struct device *d,
6017 struct device_attribute *attr, char *buf)
6018 {
6019 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6020
6021 if (!iwl_is_alive(priv))
6022 return -EAGAIN;
6023
6024 return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
6025 }
6026
6027 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
6028
6029 static ssize_t show_rs_window(struct device *d,
6030 struct device_attribute *attr,
6031 char *buf)
6032 {
6033 struct iwl_priv *priv = d->driver_data;
6034 return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
6035 }
6036 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
6037
6038 static ssize_t show_tx_power(struct device *d,
6039 struct device_attribute *attr, char *buf)
6040 {
6041 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6042 return sprintf(buf, "%d\n", priv->user_txpower_limit);
6043 }
6044
6045 static ssize_t store_tx_power(struct device *d,
6046 struct device_attribute *attr,
6047 const char *buf, size_t count)
6048 {
6049 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6050 char *p = (char *)buf;
6051 u32 val;
6052
6053 val = simple_strtoul(p, &p, 10);
6054 if (p == buf)
6055 printk(KERN_INFO DRV_NAME
6056 ": %s is not in decimal form.\n", buf);
6057 else
6058 iwl4965_hw_reg_set_txpower(priv, val);
6059
6060 return count;
6061 }
6062
6063 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
6064
6065 static ssize_t show_flags(struct device *d,
6066 struct device_attribute *attr, char *buf)
6067 {
6068 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6069
6070 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
6071 }
6072
6073 static ssize_t store_flags(struct device *d,
6074 struct device_attribute *attr,
6075 const char *buf, size_t count)
6076 {
6077 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6078 u32 flags = simple_strtoul(buf, NULL, 0);
6079
6080 mutex_lock(&priv->mutex);
6081 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
6082 /* Cancel any currently running scans... */
6083 if (iwl4965_scan_cancel_timeout(priv, 100))
6084 IWL_WARNING("Could not cancel scan.\n");
6085 else {
6086 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
6087 flags);
6088 priv->staging_rxon.flags = cpu_to_le32(flags);
6089 iwl4965_commit_rxon(priv);
6090 }
6091 }
6092 mutex_unlock(&priv->mutex);
6093
6094 return count;
6095 }
6096
6097 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
6098
6099 static ssize_t show_filter_flags(struct device *d,
6100 struct device_attribute *attr, char *buf)
6101 {
6102 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6103
6104 return sprintf(buf, "0x%04X\n",
6105 le32_to_cpu(priv->active_rxon.filter_flags));
6106 }
6107
6108 static ssize_t store_filter_flags(struct device *d,
6109 struct device_attribute *attr,
6110 const char *buf, size_t count)
6111 {
6112 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6113 u32 filter_flags = simple_strtoul(buf, NULL, 0);
6114
6115 mutex_lock(&priv->mutex);
6116 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
6117 /* Cancel any currently running scans... */
6118 if (iwl4965_scan_cancel_timeout(priv, 100))
6119 IWL_WARNING("Could not cancel scan.\n");
6120 else {
6121 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
6122 "0x%04X\n", filter_flags);
6123 priv->staging_rxon.filter_flags =
6124 cpu_to_le32(filter_flags);
6125 iwl4965_commit_rxon(priv);
6126 }
6127 }
6128 mutex_unlock(&priv->mutex);
6129
6130 return count;
6131 }
6132
6133 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
6134 store_filter_flags);
6135
6136 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
6137
6138 static ssize_t show_measurement(struct device *d,
6139 struct device_attribute *attr, char *buf)
6140 {
6141 struct iwl_priv *priv = dev_get_drvdata(d);
6142 struct iwl4965_spectrum_notification measure_report;
6143 u32 size = sizeof(measure_report), len = 0, ofs = 0;
6144 u8 *data = (u8 *) & measure_report;
6145 unsigned long flags;
6146
6147 spin_lock_irqsave(&priv->lock, flags);
6148 if (!(priv->measurement_status & MEASUREMENT_READY)) {
6149 spin_unlock_irqrestore(&priv->lock, flags);
6150 return 0;
6151 }
6152 memcpy(&measure_report, &priv->measure_report, size);
6153 priv->measurement_status = 0;
6154 spin_unlock_irqrestore(&priv->lock, flags);
6155
6156 while (size && (PAGE_SIZE - len)) {
6157 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
6158 PAGE_SIZE - len, 1);
6159 len = strlen(buf);
6160 if (PAGE_SIZE - len)
6161 buf[len++] = '\n';
6162
6163 ofs += 16;
6164 size -= min(size, 16U);
6165 }
6166
6167 return len;
6168 }
6169
6170 static ssize_t store_measurement(struct device *d,
6171 struct device_attribute *attr,
6172 const char *buf, size_t count)
6173 {
6174 struct iwl_priv *priv = dev_get_drvdata(d);
6175 struct ieee80211_measurement_params params = {
6176 .channel = le16_to_cpu(priv->active_rxon.channel),
6177 .start_time = cpu_to_le64(priv->last_tsf),
6178 .duration = cpu_to_le16(1),
6179 };
6180 u8 type = IWL_MEASURE_BASIC;
6181 u8 buffer[32];
6182 u8 channel;
6183
6184 if (count) {
6185 char *p = buffer;
6186 strncpy(buffer, buf, min(sizeof(buffer), count));
6187 channel = simple_strtoul(p, NULL, 0);
6188 if (channel)
6189 params.channel = channel;
6190
6191 p = buffer;
6192 while (*p && *p != ' ')
6193 p++;
6194 if (*p)
6195 type = simple_strtoul(p + 1, NULL, 0);
6196 }
6197
6198 IWL_DEBUG_INFO("Invoking measurement of type %d on "
6199 "channel %d (for '%s')\n", type, params.channel, buf);
6200 iwl4965_get_measurement(priv, &params, type);
6201
6202 return count;
6203 }
6204
6205 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
6206 show_measurement, store_measurement);
6207 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
6208
6209 static ssize_t store_retry_rate(struct device *d,
6210 struct device_attribute *attr,
6211 const char *buf, size_t count)
6212 {
6213 struct iwl_priv *priv = dev_get_drvdata(d);
6214
6215 priv->retry_rate = simple_strtoul(buf, NULL, 0);
6216 if (priv->retry_rate <= 0)
6217 priv->retry_rate = 1;
6218
6219 return count;
6220 }
6221
6222 static ssize_t show_retry_rate(struct device *d,
6223 struct device_attribute *attr, char *buf)
6224 {
6225 struct iwl_priv *priv = dev_get_drvdata(d);
6226 return sprintf(buf, "%d", priv->retry_rate);
6227 }
6228
6229 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
6230 store_retry_rate);
6231
6232 static ssize_t store_power_level(struct device *d,
6233 struct device_attribute *attr,
6234 const char *buf, size_t count)
6235 {
6236 struct iwl_priv *priv = dev_get_drvdata(d);
6237 int rc;
6238 int mode;
6239
6240 mode = simple_strtoul(buf, NULL, 0);
6241 mutex_lock(&priv->mutex);
6242
6243 if (!iwl_is_ready(priv)) {
6244 rc = -EAGAIN;
6245 goto out;
6246 }
6247
6248 rc = iwl_power_set_user_mode(priv, mode);
6249 if (rc) {
6250 IWL_DEBUG_MAC80211("failed setting power mode.\n");
6251 goto out;
6252 }
6253 rc = count;
6254
6255 out:
6256 mutex_unlock(&priv->mutex);
6257 return rc;
6258 }
6259
6260 #define MAX_WX_STRING 80
6261
6262 /* Values are in microsecond */
6263 static const s32 timeout_duration[] = {
6264 350000,
6265 250000,
6266 75000,
6267 37000,
6268 25000,
6269 };
6270 static const s32 period_duration[] = {
6271 400000,
6272 700000,
6273 1000000,
6274 1000000,
6275 1000000
6276 };
6277
6278 static ssize_t show_power_level(struct device *d,
6279 struct device_attribute *attr, char *buf)
6280 {
6281 struct iwl_priv *priv = dev_get_drvdata(d);
6282 int level = priv->power_data.power_mode;
6283 char *p = buf;
6284
6285 p += sprintf(p, "%d ", level);
6286 switch (level) {
6287 case IWL_POWER_MODE_CAM:
6288 case IWL_POWER_AC:
6289 p += sprintf(p, "(AC)");
6290 break;
6291 case IWL_POWER_BATTERY:
6292 p += sprintf(p, "(BATTERY)");
6293 break;
6294 default:
6295 p += sprintf(p,
6296 "(Timeout %dms, Period %dms)",
6297 timeout_duration[level - 1] / 1000,
6298 period_duration[level - 1] / 1000);
6299 }
6300 /*
6301 if (!(priv->power_mode & IWL_POWER_ENABLED))
6302 p += sprintf(p, " OFF\n");
6303 else
6304 p += sprintf(p, " \n");
6305 */
6306 p += sprintf(p, " \n");
6307 return (p - buf + 1);
6308 }
6309
6310 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
6311 store_power_level);
6312
6313 static ssize_t show_channels(struct device *d,
6314 struct device_attribute *attr, char *buf)
6315 {
6316 /* all this shit doesn't belong into sysfs anyway */
6317 return 0;
6318 }
6319
6320 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
6321
6322 static ssize_t show_statistics(struct device *d,
6323 struct device_attribute *attr, char *buf)
6324 {
6325 struct iwl_priv *priv = dev_get_drvdata(d);
6326 u32 size = sizeof(struct iwl4965_notif_statistics);
6327 u32 len = 0, ofs = 0;
6328 u8 *data = (u8 *) & priv->statistics;
6329 int rc = 0;
6330
6331 if (!iwl_is_alive(priv))
6332 return -EAGAIN;
6333
6334 mutex_lock(&priv->mutex);
6335 rc = iwl_send_statistics_request(priv, 0);
6336 mutex_unlock(&priv->mutex);
6337
6338 if (rc) {
6339 len = sprintf(buf,
6340 "Error sending statistics request: 0x%08X\n", rc);
6341 return len;
6342 }
6343
6344 while (size && (PAGE_SIZE - len)) {
6345 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
6346 PAGE_SIZE - len, 1);
6347 len = strlen(buf);
6348 if (PAGE_SIZE - len)
6349 buf[len++] = '\n';
6350
6351 ofs += 16;
6352 size -= min(size, 16U);
6353 }
6354
6355 return len;
6356 }
6357
6358 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
6359
6360 static ssize_t show_status(struct device *d,
6361 struct device_attribute *attr, char *buf)
6362 {
6363 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6364 if (!iwl_is_alive(priv))
6365 return -EAGAIN;
6366 return sprintf(buf, "0x%08x\n", (int)priv->status);
6367 }
6368
6369 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
6370
6371 static ssize_t dump_error_log(struct device *d,
6372 struct device_attribute *attr,
6373 const char *buf, size_t count)
6374 {
6375 char *p = (char *)buf;
6376
6377 if (p[0] == '1')
6378 iwl4965_dump_nic_error_log((struct iwl_priv *)d->driver_data);
6379
6380 return strnlen(buf, count);
6381 }
6382
6383 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
6384
6385 static ssize_t dump_event_log(struct device *d,
6386 struct device_attribute *attr,
6387 const char *buf, size_t count)
6388 {
6389 char *p = (char *)buf;
6390
6391 if (p[0] == '1')
6392 iwl4965_dump_nic_event_log((struct iwl_priv *)d->driver_data);
6393
6394 return strnlen(buf, count);
6395 }
6396
6397 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
6398
6399 /*****************************************************************************
6400 *
6401 * driver setup and teardown
6402 *
6403 *****************************************************************************/
6404
6405 static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
6406 {
6407 priv->workqueue = create_workqueue(DRV_NAME);
6408
6409 init_waitqueue_head(&priv->wait_command_queue);
6410
6411 INIT_WORK(&priv->up, iwl4965_bg_up);
6412 INIT_WORK(&priv->restart, iwl4965_bg_restart);
6413 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
6414 INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
6415 INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
6416 INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
6417 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
6418 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
6419 INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
6420 INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
6421 INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
6422 INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
6423 INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
6424
6425 iwl4965_hw_setup_deferred_work(priv);
6426
6427 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
6428 iwl4965_irq_tasklet, (unsigned long)priv);
6429 }
6430
6431 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
6432 {
6433 iwl4965_hw_cancel_deferred_work(priv);
6434
6435 cancel_delayed_work_sync(&priv->init_alive_start);
6436 cancel_delayed_work(&priv->scan_check);
6437 cancel_delayed_work(&priv->alive_start);
6438 cancel_delayed_work(&priv->post_associate);
6439 cancel_work_sync(&priv->beacon_update);
6440 }
6441
6442 static struct attribute *iwl4965_sysfs_entries[] = {
6443 &dev_attr_channels.attr,
6444 &dev_attr_dump_errors.attr,
6445 &dev_attr_dump_events.attr,
6446 &dev_attr_flags.attr,
6447 &dev_attr_filter_flags.attr,
6448 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
6449 &dev_attr_measurement.attr,
6450 #endif
6451 &dev_attr_power_level.attr,
6452 &dev_attr_retry_rate.attr,
6453 &dev_attr_rs_window.attr,
6454 &dev_attr_statistics.attr,
6455 &dev_attr_status.attr,
6456 &dev_attr_temperature.attr,
6457 &dev_attr_tx_power.attr,
6458 #ifdef CONFIG_IWLWIFI_DEBUG
6459 &dev_attr_debug_level.attr,
6460 #endif
6461 &dev_attr_version.attr,
6462
6463 NULL
6464 };
6465
6466 static struct attribute_group iwl4965_attribute_group = {
6467 .name = NULL, /* put in device directory */
6468 .attrs = iwl4965_sysfs_entries,
6469 };
6470
6471 static struct ieee80211_ops iwl4965_hw_ops = {
6472 .tx = iwl4965_mac_tx,
6473 .start = iwl4965_mac_start,
6474 .stop = iwl4965_mac_stop,
6475 .add_interface = iwl4965_mac_add_interface,
6476 .remove_interface = iwl4965_mac_remove_interface,
6477 .config = iwl4965_mac_config,
6478 .config_interface = iwl4965_mac_config_interface,
6479 .configure_filter = iwl4965_configure_filter,
6480 .set_key = iwl4965_mac_set_key,
6481 .update_tkip_key = iwl4965_mac_update_tkip_key,
6482 .get_stats = iwl4965_mac_get_stats,
6483 .get_tx_stats = iwl4965_mac_get_tx_stats,
6484 .conf_tx = iwl4965_mac_conf_tx,
6485 .get_tsf = iwl4965_mac_get_tsf,
6486 .reset_tsf = iwl4965_mac_reset_tsf,
6487 .beacon_update = iwl4965_mac_beacon_update,
6488 .bss_info_changed = iwl4965_bss_info_changed,
6489 #ifdef CONFIG_IWL4965_HT
6490 .ampdu_action = iwl4965_mac_ampdu_action,
6491 #endif /* CONFIG_IWL4965_HT */
6492 .hw_scan = iwl4965_mac_hw_scan
6493 };
6494
6495 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
6496 {
6497 int err = 0;
6498 struct iwl_priv *priv;
6499 struct ieee80211_hw *hw;
6500 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
6501 unsigned long flags;
6502 DECLARE_MAC_BUF(mac);
6503
6504 /************************
6505 * 1. Allocating HW data
6506 ************************/
6507
6508 /* Disabling hardware scan means that mac80211 will perform scans
6509 * "the hard way", rather than using device's scan. */
6510 if (cfg->mod_params->disable_hw_scan) {
6511 if (cfg->mod_params->debug & IWL_DL_INFO)
6512 dev_printk(KERN_DEBUG, &(pdev->dev),
6513 "Disabling hw_scan\n");
6514 iwl4965_hw_ops.hw_scan = NULL;
6515 }
6516
6517 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
6518 if (!hw) {
6519 err = -ENOMEM;
6520 goto out;
6521 }
6522 priv = hw->priv;
6523 /* At this point both hw and priv are allocated. */
6524
6525 SET_IEEE80211_DEV(hw, &pdev->dev);
6526
6527 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
6528 priv->cfg = cfg;
6529 priv->pci_dev = pdev;
6530
6531 #ifdef CONFIG_IWLWIFI_DEBUG
6532 priv->debug_level = priv->cfg->mod_params->debug;
6533 atomic_set(&priv->restrict_refcnt, 0);
6534 #endif
6535
6536 /**************************
6537 * 2. Initializing PCI bus
6538 **************************/
6539 if (pci_enable_device(pdev)) {
6540 err = -ENODEV;
6541 goto out_ieee80211_free_hw;
6542 }
6543
6544 pci_set_master(pdev);
6545
6546 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
6547 if (!err)
6548 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
6549 if (err) {
6550 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
6551 if (!err)
6552 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
6553 /* both attempts failed: */
6554 if (err) {
6555 printk(KERN_WARNING "%s: No suitable DMA available.\n",
6556 DRV_NAME);
6557 goto out_pci_disable_device;
6558 }
6559 }
6560
6561 err = pci_request_regions(pdev, DRV_NAME);
6562 if (err)
6563 goto out_pci_disable_device;
6564
6565 pci_set_drvdata(pdev, priv);
6566
6567 /* We disable the RETRY_TIMEOUT register (0x41) to keep
6568 * PCI Tx retries from interfering with C3 CPU state */
6569 pci_write_config_byte(pdev, 0x41, 0x00);
6570
6571 /***********************
6572 * 3. Read REV register
6573 ***********************/
6574 priv->hw_base = pci_iomap(pdev, 0, 0);
6575 if (!priv->hw_base) {
6576 err = -ENODEV;
6577 goto out_pci_release_regions;
6578 }
6579
6580 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
6581 (unsigned long long) pci_resource_len(pdev, 0));
6582 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
6583
6584 iwl_hw_detect(priv);
6585 printk(KERN_INFO DRV_NAME
6586 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
6587 priv->cfg->name, priv->hw_rev);
6588
6589 /* amp init */
6590 err = priv->cfg->ops->lib->apm_ops.init(priv);
6591 if (err < 0) {
6592 IWL_DEBUG_INFO("Failed to init APMG\n");
6593 goto out_iounmap;
6594 }
6595 /*****************
6596 * 4. Read EEPROM
6597 *****************/
6598 /* Read the EEPROM */
6599 err = iwl_eeprom_init(priv);
6600 if (err) {
6601 IWL_ERROR("Unable to init EEPROM\n");
6602 goto out_iounmap;
6603 }
6604 err = iwl_eeprom_check_version(priv);
6605 if (err)
6606 goto out_iounmap;
6607
6608 /* extract MAC Address */
6609 iwl_eeprom_get_mac(priv, priv->mac_addr);
6610 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
6611 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
6612
6613 /************************
6614 * 5. Setup HW constants
6615 ************************/
6616 /* Device-specific setup */
6617 if (priv->cfg->ops->lib->set_hw_params(priv)) {
6618 IWL_ERROR("failed to set hw parameters\n");
6619 goto out_free_eeprom;
6620 }
6621
6622 /*******************
6623 * 6. Setup hw/priv
6624 *******************/
6625
6626 err = iwl_setup(priv);
6627 if (err)
6628 goto out_free_eeprom;
6629 /* At this point both hw and priv are initialized. */
6630
6631 /**********************************
6632 * 7. Initialize module parameters
6633 **********************************/
6634
6635 /* Disable radio (SW RF KILL) via parameter when loading driver */
6636 if (priv->cfg->mod_params->disable) {
6637 set_bit(STATUS_RF_KILL_SW, &priv->status);
6638 IWL_DEBUG_INFO("Radio disabled.\n");
6639 }
6640
6641 if (priv->cfg->mod_params->enable_qos)
6642 priv->qos_data.qos_enable = 1;
6643
6644 /********************
6645 * 8. Setup services
6646 ********************/
6647 spin_lock_irqsave(&priv->lock, flags);
6648 iwl4965_disable_interrupts(priv);
6649 spin_unlock_irqrestore(&priv->lock, flags);
6650
6651 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
6652 if (err) {
6653 IWL_ERROR("failed to create sysfs device attributes\n");
6654 goto out_free_eeprom;
6655 }
6656
6657 err = iwl_dbgfs_register(priv, DRV_NAME);
6658 if (err) {
6659 IWL_ERROR("failed to create debugfs files\n");
6660 goto out_remove_sysfs;
6661 }
6662
6663 iwl4965_setup_deferred_work(priv);
6664 iwl4965_setup_rx_handlers(priv);
6665
6666 /********************
6667 * 9. Conclude
6668 ********************/
6669 pci_save_state(pdev);
6670 pci_disable_device(pdev);
6671
6672 /* notify iwlcore to init */
6673 iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
6674 return 0;
6675
6676 out_remove_sysfs:
6677 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
6678 out_free_eeprom:
6679 iwl_eeprom_free(priv);
6680 out_iounmap:
6681 pci_iounmap(pdev, priv->hw_base);
6682 out_pci_release_regions:
6683 pci_release_regions(pdev);
6684 pci_set_drvdata(pdev, NULL);
6685 out_pci_disable_device:
6686 pci_disable_device(pdev);
6687 out_ieee80211_free_hw:
6688 ieee80211_free_hw(priv->hw);
6689 out:
6690 return err;
6691 }
6692
6693 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
6694 {
6695 struct iwl_priv *priv = pci_get_drvdata(pdev);
6696 struct list_head *p, *q;
6697 int i;
6698 unsigned long flags;
6699
6700 if (!priv)
6701 return;
6702
6703 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
6704
6705 if (priv->mac80211_registered) {
6706 ieee80211_unregister_hw(priv->hw);
6707 priv->mac80211_registered = 0;
6708 }
6709
6710 set_bit(STATUS_EXIT_PENDING, &priv->status);
6711
6712 iwl4965_down(priv);
6713
6714 /* make sure we flush any pending irq or
6715 * tasklet for the driver
6716 */
6717 spin_lock_irqsave(&priv->lock, flags);
6718 iwl4965_disable_interrupts(priv);
6719 spin_unlock_irqrestore(&priv->lock, flags);
6720
6721 iwl_synchronize_irq(priv);
6722
6723 /* Free MAC hash list for ADHOC */
6724 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
6725 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
6726 list_del(p);
6727 kfree(list_entry(p, struct iwl4965_ibss_seq, list));
6728 }
6729 }
6730
6731 iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT);
6732 iwl_dbgfs_unregister(priv);
6733 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
6734
6735 iwl4965_dealloc_ucode_pci(priv);
6736
6737 if (priv->rxq.bd)
6738 iwl_rx_queue_free(priv, &priv->rxq);
6739 iwl_hw_txq_ctx_free(priv);
6740
6741 iwlcore_clear_stations_table(priv);
6742 iwl_eeprom_free(priv);
6743
6744
6745 /*netif_stop_queue(dev); */
6746 flush_workqueue(priv->workqueue);
6747
6748 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
6749 * priv->workqueue... so we can't take down the workqueue
6750 * until now... */
6751 destroy_workqueue(priv->workqueue);
6752 priv->workqueue = NULL;
6753
6754 pci_iounmap(pdev, priv->hw_base);
6755 pci_release_regions(pdev);
6756 pci_disable_device(pdev);
6757 pci_set_drvdata(pdev, NULL);
6758
6759 iwl_free_channel_map(priv);
6760 iwlcore_free_geos(priv);
6761
6762 if (priv->ibss_beacon)
6763 dev_kfree_skb(priv->ibss_beacon);
6764
6765 ieee80211_free_hw(priv->hw);
6766 }
6767
6768 #ifdef CONFIG_PM
6769
6770 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
6771 {
6772 struct iwl_priv *priv = pci_get_drvdata(pdev);
6773
6774 if (priv->is_open) {
6775 set_bit(STATUS_IN_SUSPEND, &priv->status);
6776 iwl4965_mac_stop(priv->hw);
6777 priv->is_open = 1;
6778 }
6779
6780 pci_set_power_state(pdev, PCI_D3hot);
6781
6782 return 0;
6783 }
6784
6785 static int iwl4965_pci_resume(struct pci_dev *pdev)
6786 {
6787 struct iwl_priv *priv = pci_get_drvdata(pdev);
6788
6789 pci_set_power_state(pdev, PCI_D0);
6790
6791 if (priv->is_open)
6792 iwl4965_mac_start(priv->hw);
6793
6794 clear_bit(STATUS_IN_SUSPEND, &priv->status);
6795 return 0;
6796 }
6797
6798 #endif /* CONFIG_PM */
6799
6800 /*****************************************************************************
6801 *
6802 * driver and module entry point
6803 *
6804 *****************************************************************************/
6805
6806 /* Hardware specific file defines the PCI IDs table for that hardware module */
6807 static struct pci_device_id iwl_hw_card_ids[] = {
6808 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
6809 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
6810 #ifdef CONFIG_IWL5000
6811 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
6812 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
6813 {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
6814 #endif /* CONFIG_IWL5000 */
6815 {0}
6816 };
6817 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
6818
6819 static struct pci_driver iwl_driver = {
6820 .name = DRV_NAME,
6821 .id_table = iwl_hw_card_ids,
6822 .probe = iwl4965_pci_probe,
6823 .remove = __devexit_p(iwl4965_pci_remove),
6824 #ifdef CONFIG_PM
6825 .suspend = iwl4965_pci_suspend,
6826 .resume = iwl4965_pci_resume,
6827 #endif
6828 };
6829
6830 static int __init iwl4965_init(void)
6831 {
6832
6833 int ret;
6834 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
6835 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
6836
6837 ret = iwl4965_rate_control_register();
6838 if (ret) {
6839 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
6840 return ret;
6841 }
6842
6843 ret = pci_register_driver(&iwl_driver);
6844 if (ret) {
6845 IWL_ERROR("Unable to initialize PCI module\n");
6846 goto error_register;
6847 }
6848
6849 return ret;
6850
6851
6852 #ifdef CONFIG_IWLWIFI_DEBUG
6853 pci_unregister_driver(&iwl_driver);
6854 #endif
6855 error_register:
6856 iwl4965_rate_control_unregister();
6857 return ret;
6858 }
6859
6860 static void __exit iwl4965_exit(void)
6861 {
6862 pci_unregister_driver(&iwl_driver);
6863 iwl4965_rate_control_unregister();
6864 }
6865
6866 module_exit(iwl4965_exit);
6867 module_init(iwl4965_init);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree