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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl-agn.c
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2009 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 * Intel Linux Wireless <ilw@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/init.h>
33 #include <linux/pci.h>
34 #include <linux/dma-mapping.h>
35 #include <linux/delay.h>
36 #include <linux/skbuff.h>
37 #include <linux/netdevice.h>
38 #include <linux/wireless.h>
39 #include <linux/firmware.h>
40 #include <linux/etherdevice.h>
41 #include <linux/if_arp.h>
42
43 #include <net/mac80211.h>
44
45 #include <asm/div64.h>
46
47 #define DRV_NAME "iwlagn"
48
49 #include "iwl-eeprom.h"
50 #include "iwl-dev.h"
51 #include "iwl-core.h"
52 #include "iwl-io.h"
53 #include "iwl-helpers.h"
54 #include "iwl-sta.h"
55 #include "iwl-calib.h"
56
57
58 /******************************************************************************
59 *
60 * module boiler plate
61 *
62 ******************************************************************************/
63
64 /*
65 * module name, copyright, version, etc.
66 */
67 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
68
69 #ifdef CONFIG_IWLWIFI_DEBUG
70 #define VD "d"
71 #else
72 #define VD
73 #endif
74
75 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
76 #define VS "s"
77 #else
78 #define VS
79 #endif
80
81 #define DRV_VERSION IWLWIFI_VERSION VD VS
82
83
84 MODULE_DESCRIPTION(DRV_DESCRIPTION);
85 MODULE_VERSION(DRV_VERSION);
86 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
87 MODULE_LICENSE("GPL");
88 MODULE_ALIAS("iwl4965");
89
90 /*************** STATION TABLE MANAGEMENT ****
91 * mac80211 should be examined to determine if sta_info is duplicating
92 * the functionality provided here
93 */
94
95 /**************************************************************/
96
97 /**
98 * iwl_commit_rxon - commit staging_rxon to hardware
99 *
100 * The RXON command in staging_rxon is committed to the hardware and
101 * the active_rxon structure is updated with the new data. This
102 * function correctly transitions out of the RXON_ASSOC_MSK state if
103 * a HW tune is required based on the RXON structure changes.
104 */
105 static int iwl_commit_rxon(struct iwl_priv *priv)
106 {
107 /* cast away the const for active_rxon in this function */
108 struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
109 int ret;
110 bool new_assoc =
111 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
112
113 if (!iwl_is_alive(priv))
114 return -EBUSY;
115
116 /* always get timestamp with Rx frame */
117 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
118 /* allow CTS-to-self if possible. this is relevant only for
119 * 5000, but will not damage 4965 */
120 priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
121
122 ret = iwl_check_rxon_cmd(priv);
123 if (ret) {
124 IWL_ERR(priv, "Invalid RXON configuration. Not committing.\n");
125 return -EINVAL;
126 }
127
128 /* If we don't need to send a full RXON, we can use
129 * iwl_rxon_assoc_cmd which is used to reconfigure filter
130 * and other flags for the current radio configuration. */
131 if (!iwl_full_rxon_required(priv)) {
132 ret = iwl_send_rxon_assoc(priv);
133 if (ret) {
134 IWL_ERR(priv, "Error setting RXON_ASSOC (%d)\n", ret);
135 return ret;
136 }
137
138 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
139 return 0;
140 }
141
142 /* station table will be cleared */
143 priv->assoc_station_added = 0;
144
145 /* If we are currently associated and the new config requires
146 * an RXON_ASSOC and the new config wants the associated mask enabled,
147 * we must clear the associated from the active configuration
148 * before we apply the new config */
149 if (iwl_is_associated(priv) && new_assoc) {
150 IWL_DEBUG_INFO(priv, "Toggling associated bit on current RXON\n");
151 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
152
153 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
154 sizeof(struct iwl_rxon_cmd),
155 &priv->active_rxon);
156
157 /* If the mask clearing failed then we set
158 * active_rxon back to what it was previously */
159 if (ret) {
160 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
161 IWL_ERR(priv, "Error clearing ASSOC_MSK (%d)\n", ret);
162 return ret;
163 }
164 }
165
166 IWL_DEBUG_INFO(priv, "Sending RXON\n"
167 "* with%s RXON_FILTER_ASSOC_MSK\n"
168 "* channel = %d\n"
169 "* bssid = %pM\n",
170 (new_assoc ? "" : "out"),
171 le16_to_cpu(priv->staging_rxon.channel),
172 priv->staging_rxon.bssid_addr);
173
174 iwl_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
175
176 /* Apply the new configuration
177 * RXON unassoc clears the station table in uCode, send it before
178 * we add the bcast station. If assoc bit is set, we will send RXON
179 * after having added the bcast and bssid station.
180 */
181 if (!new_assoc) {
182 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
183 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
184 if (ret) {
185 IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
186 return ret;
187 }
188 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
189 }
190
191 iwl_clear_stations_table(priv);
192
193 if (!priv->error_recovering)
194 priv->start_calib = 0;
195
196 /* Add the broadcast address so we can send broadcast frames */
197 if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
198 IWL_INVALID_STATION) {
199 IWL_ERR(priv, "Error adding BROADCAST address for transmit.\n");
200 return -EIO;
201 }
202
203 /* If we have set the ASSOC_MSK and we are in BSS mode then
204 * add the IWL_AP_ID to the station rate table */
205 if (new_assoc) {
206 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
207 ret = iwl_rxon_add_station(priv,
208 priv->active_rxon.bssid_addr, 1);
209 if (ret == IWL_INVALID_STATION) {
210 IWL_ERR(priv,
211 "Error adding AP address for TX.\n");
212 return -EIO;
213 }
214 priv->assoc_station_added = 1;
215 if (priv->default_wep_key &&
216 iwl_send_static_wepkey_cmd(priv, 0))
217 IWL_ERR(priv,
218 "Could not send WEP static key.\n");
219 }
220
221 /* Apply the new configuration
222 * RXON assoc doesn't clear the station table in uCode,
223 */
224 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
225 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
226 if (ret) {
227 IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
228 return ret;
229 }
230 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
231 }
232
233 iwl_init_sensitivity(priv);
234
235 /* If we issue a new RXON command which required a tune then we must
236 * send a new TXPOWER command or we won't be able to Tx any frames */
237 ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
238 if (ret) {
239 IWL_ERR(priv, "Error sending TX power (%d)\n", ret);
240 return ret;
241 }
242
243 return 0;
244 }
245
246 void iwl_update_chain_flags(struct iwl_priv *priv)
247 {
248
249 iwl_set_rxon_chain(priv);
250 iwl_commit_rxon(priv);
251 }
252
253 static void iwl_clear_free_frames(struct iwl_priv *priv)
254 {
255 struct list_head *element;
256
257 IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
258 priv->frames_count);
259
260 while (!list_empty(&priv->free_frames)) {
261 element = priv->free_frames.next;
262 list_del(element);
263 kfree(list_entry(element, struct iwl_frame, list));
264 priv->frames_count--;
265 }
266
267 if (priv->frames_count) {
268 IWL_WARN(priv, "%d frames still in use. Did we lose one?\n",
269 priv->frames_count);
270 priv->frames_count = 0;
271 }
272 }
273
274 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
275 {
276 struct iwl_frame *frame;
277 struct list_head *element;
278 if (list_empty(&priv->free_frames)) {
279 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
280 if (!frame) {
281 IWL_ERR(priv, "Could not allocate frame!\n");
282 return NULL;
283 }
284
285 priv->frames_count++;
286 return frame;
287 }
288
289 element = priv->free_frames.next;
290 list_del(element);
291 return list_entry(element, struct iwl_frame, list);
292 }
293
294 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
295 {
296 memset(frame, 0, sizeof(*frame));
297 list_add(&frame->list, &priv->free_frames);
298 }
299
300 static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
301 struct ieee80211_hdr *hdr,
302 int left)
303 {
304 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
305 ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
306 (priv->iw_mode != NL80211_IFTYPE_AP)))
307 return 0;
308
309 if (priv->ibss_beacon->len > left)
310 return 0;
311
312 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
313
314 return priv->ibss_beacon->len;
315 }
316
317 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv,
318 struct iwl_frame *frame, u8 rate)
319 {
320 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
321 unsigned int frame_size;
322
323 tx_beacon_cmd = &frame->u.beacon;
324 memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
325
326 tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
327 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
328
329 frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
330 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
331
332 BUG_ON(frame_size > MAX_MPDU_SIZE);
333 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
334
335 if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
336 tx_beacon_cmd->tx.rate_n_flags =
337 iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
338 else
339 tx_beacon_cmd->tx.rate_n_flags =
340 iwl_hw_set_rate_n_flags(rate, 0);
341
342 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
343 TX_CMD_FLG_TSF_MSK |
344 TX_CMD_FLG_STA_RATE_MSK;
345
346 return sizeof(*tx_beacon_cmd) + frame_size;
347 }
348 static int iwl_send_beacon_cmd(struct iwl_priv *priv)
349 {
350 struct iwl_frame *frame;
351 unsigned int frame_size;
352 int rc;
353 u8 rate;
354
355 frame = iwl_get_free_frame(priv);
356
357 if (!frame) {
358 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
359 "command.\n");
360 return -ENOMEM;
361 }
362
363 rate = iwl_rate_get_lowest_plcp(priv);
364
365 frame_size = iwl_hw_get_beacon_cmd(priv, frame, rate);
366
367 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
368 &frame->u.cmd[0]);
369
370 iwl_free_frame(priv, frame);
371
372 return rc;
373 }
374
375 static inline dma_addr_t iwl_tfd_tb_get_addr(struct iwl_tfd *tfd, u8 idx)
376 {
377 struct iwl_tfd_tb *tb = &tfd->tbs[idx];
378
379 dma_addr_t addr = get_unaligned_le32(&tb->lo);
380 if (sizeof(dma_addr_t) > sizeof(u32))
381 addr |=
382 ((dma_addr_t)(le16_to_cpu(tb->hi_n_len) & 0xF) << 16) << 16;
383
384 return addr;
385 }
386
387 static inline u16 iwl_tfd_tb_get_len(struct iwl_tfd *tfd, u8 idx)
388 {
389 struct iwl_tfd_tb *tb = &tfd->tbs[idx];
390
391 return le16_to_cpu(tb->hi_n_len) >> 4;
392 }
393
394 static inline void iwl_tfd_set_tb(struct iwl_tfd *tfd, u8 idx,
395 dma_addr_t addr, u16 len)
396 {
397 struct iwl_tfd_tb *tb = &tfd->tbs[idx];
398 u16 hi_n_len = len << 4;
399
400 put_unaligned_le32(addr, &tb->lo);
401 if (sizeof(dma_addr_t) > sizeof(u32))
402 hi_n_len |= ((addr >> 16) >> 16) & 0xF;
403
404 tb->hi_n_len = cpu_to_le16(hi_n_len);
405
406 tfd->num_tbs = idx + 1;
407 }
408
409 static inline u8 iwl_tfd_get_num_tbs(struct iwl_tfd *tfd)
410 {
411 return tfd->num_tbs & 0x1f;
412 }
413
414 /**
415 * iwl_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr]
416 * @priv - driver private data
417 * @txq - tx queue
418 *
419 * Does NOT advance any TFD circular buffer read/write indexes
420 * Does NOT free the TFD itself (which is within circular buffer)
421 */
422 void iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
423 {
424 struct iwl_tfd *tfd_tmp = (struct iwl_tfd *)txq->tfds;
425 struct iwl_tfd *tfd;
426 struct pci_dev *dev = priv->pci_dev;
427 int index = txq->q.read_ptr;
428 int i;
429 int num_tbs;
430
431 tfd = &tfd_tmp[index];
432
433 /* Sanity check on number of chunks */
434 num_tbs = iwl_tfd_get_num_tbs(tfd);
435
436 if (num_tbs >= IWL_NUM_OF_TBS) {
437 IWL_ERR(priv, "Too many chunks: %i\n", num_tbs);
438 /* @todo issue fatal error, it is quite serious situation */
439 return;
440 }
441
442 /* Unmap tx_cmd */
443 if (num_tbs)
444 pci_unmap_single(dev,
445 pci_unmap_addr(&txq->cmd[index]->meta, mapping),
446 pci_unmap_len(&txq->cmd[index]->meta, len),
447 PCI_DMA_BIDIRECTIONAL);
448
449 /* Unmap chunks, if any. */
450 for (i = 1; i < num_tbs; i++) {
451 pci_unmap_single(dev, iwl_tfd_tb_get_addr(tfd, i),
452 iwl_tfd_tb_get_len(tfd, i), PCI_DMA_TODEVICE);
453
454 if (txq->txb) {
455 dev_kfree_skb(txq->txb[txq->q.read_ptr].skb[i - 1]);
456 txq->txb[txq->q.read_ptr].skb[i - 1] = NULL;
457 }
458 }
459 }
460
461 int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
462 struct iwl_tx_queue *txq,
463 dma_addr_t addr, u16 len,
464 u8 reset, u8 pad)
465 {
466 struct iwl_queue *q;
467 struct iwl_tfd *tfd, *tfd_tmp;
468 u32 num_tbs;
469
470 q = &txq->q;
471 tfd_tmp = (struct iwl_tfd *)txq->tfds;
472 tfd = &tfd_tmp[q->write_ptr];
473
474 if (reset)
475 memset(tfd, 0, sizeof(*tfd));
476
477 num_tbs = iwl_tfd_get_num_tbs(tfd);
478
479 /* Each TFD can point to a maximum 20 Tx buffers */
480 if (num_tbs >= IWL_NUM_OF_TBS) {
481 IWL_ERR(priv, "Error can not send more than %d chunks\n",
482 IWL_NUM_OF_TBS);
483 return -EINVAL;
484 }
485
486 BUG_ON(addr & ~DMA_BIT_MASK(36));
487 if (unlikely(addr & ~IWL_TX_DMA_MASK))
488 IWL_ERR(priv, "Unaligned address = %llx\n",
489 (unsigned long long)addr);
490
491 iwl_tfd_set_tb(tfd, num_tbs, addr, len);
492
493 return 0;
494 }
495
496 /*
497 * Tell nic where to find circular buffer of Tx Frame Descriptors for
498 * given Tx queue, and enable the DMA channel used for that queue.
499 *
500 * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA
501 * channels supported in hardware.
502 */
503 int iwl_hw_tx_queue_init(struct iwl_priv *priv,
504 struct iwl_tx_queue *txq)
505 {
506 int ret;
507 unsigned long flags;
508 int txq_id = txq->q.id;
509
510 spin_lock_irqsave(&priv->lock, flags);
511 ret = iwl_grab_nic_access(priv);
512 if (ret) {
513 spin_unlock_irqrestore(&priv->lock, flags);
514 return ret;
515 }
516
517 /* Circular buffer (TFD queue in DRAM) physical base address */
518 iwl_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id),
519 txq->q.dma_addr >> 8);
520
521 iwl_release_nic_access(priv);
522 spin_unlock_irqrestore(&priv->lock, flags);
523
524 return 0;
525 }
526
527
528 /******************************************************************************
529 *
530 * Misc. internal state and helper functions
531 *
532 ******************************************************************************/
533
534 static void iwl_ht_conf(struct iwl_priv *priv,
535 struct ieee80211_bss_conf *bss_conf)
536 {
537 struct ieee80211_sta_ht_cap *ht_conf;
538 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
539 struct ieee80211_sta *sta;
540
541 IWL_DEBUG_MAC80211(priv, "enter: \n");
542
543 if (!iwl_conf->is_ht)
544 return;
545
546
547 /*
548 * It is totally wrong to base global information on something
549 * that is valid only when associated, alas, this driver works
550 * that way and I don't know how to fix it.
551 */
552
553 rcu_read_lock();
554 sta = ieee80211_find_sta(priv->hw, priv->bssid);
555 if (!sta) {
556 rcu_read_unlock();
557 return;
558 }
559 ht_conf = &sta->ht_cap;
560
561 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
562 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
563 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
564 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
565
566 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
567 iwl_conf->max_amsdu_size =
568 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
569
570 iwl_conf->supported_chan_width =
571 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40);
572
573 /*
574 * XXX: The HT configuration needs to be moved into iwl_mac_config()
575 * to be done there correctly.
576 */
577
578 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
579 if (conf_is_ht40_minus(&priv->hw->conf))
580 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
581 else if (conf_is_ht40_plus(&priv->hw->conf))
582 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
583
584 /* If no above or below channel supplied disable FAT channel */
585 if (iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_ABOVE &&
586 iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_BELOW)
587 iwl_conf->supported_chan_width = 0;
588
589 iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
590
591 memcpy(&iwl_conf->mcs, &ht_conf->mcs, 16);
592
593 iwl_conf->tx_chan_width = iwl_conf->supported_chan_width != 0;
594 iwl_conf->ht_protection =
595 bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
596 iwl_conf->non_GF_STA_present =
597 !!(bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
598
599 rcu_read_unlock();
600
601 IWL_DEBUG_MAC80211(priv, "leave\n");
602 }
603
604 #define MAX_UCODE_BEACON_INTERVAL 4096
605
606 static u16 iwl_adjust_beacon_interval(u16 beacon_val)
607 {
608 u16 new_val = 0;
609 u16 beacon_factor = 0;
610
611 beacon_factor = (beacon_val + MAX_UCODE_BEACON_INTERVAL)
612 / MAX_UCODE_BEACON_INTERVAL;
613 new_val = beacon_val / beacon_factor;
614
615 if (!new_val)
616 new_val = MAX_UCODE_BEACON_INTERVAL;
617
618 return new_val;
619 }
620
621 static void iwl_setup_rxon_timing(struct iwl_priv *priv)
622 {
623 u64 tsf;
624 s32 interval_tm, rem;
625 unsigned long flags;
626 struct ieee80211_conf *conf = NULL;
627 u16 beacon_int = 0;
628
629 conf = ieee80211_get_hw_conf(priv->hw);
630
631 spin_lock_irqsave(&priv->lock, flags);
632 priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
633 priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
634
635 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
636 beacon_int = iwl_adjust_beacon_interval(priv->beacon_int);
637 priv->rxon_timing.atim_window = 0;
638 } else {
639 beacon_int = iwl_adjust_beacon_interval(conf->beacon_int);
640
641 /* TODO: we need to get atim_window from upper stack
642 * for now we set to 0 */
643 priv->rxon_timing.atim_window = 0;
644 }
645
646 priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
647
648 tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
649 interval_tm = beacon_int * 1024;
650 rem = do_div(tsf, interval_tm);
651 priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
652
653 spin_unlock_irqrestore(&priv->lock, flags);
654 IWL_DEBUG_ASSOC(priv, "beacon interval %d beacon timer %d beacon tim %d\n",
655 le16_to_cpu(priv->rxon_timing.beacon_interval),
656 le32_to_cpu(priv->rxon_timing.beacon_init_val),
657 le16_to_cpu(priv->rxon_timing.atim_window));
658 }
659
660 static int iwl_set_mode(struct iwl_priv *priv, int mode)
661 {
662 iwl_connection_init_rx_config(priv, mode);
663 iwl_set_rxon_chain(priv);
664 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
665
666 iwl_clear_stations_table(priv);
667
668 /* dont commit rxon if rf-kill is on*/
669 if (!iwl_is_ready_rf(priv))
670 return -EAGAIN;
671
672 iwl_commit_rxon(priv);
673
674 return 0;
675 }
676
677 /******************************************************************************
678 *
679 * Generic RX handler implementations
680 *
681 ******************************************************************************/
682 static void iwl_rx_reply_alive(struct iwl_priv *priv,
683 struct iwl_rx_mem_buffer *rxb)
684 {
685 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
686 struct iwl_alive_resp *palive;
687 struct delayed_work *pwork;
688
689 palive = &pkt->u.alive_frame;
690
691 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
692 "0x%01X 0x%01X\n",
693 palive->is_valid, palive->ver_type,
694 palive->ver_subtype);
695
696 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
697 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
698 memcpy(&priv->card_alive_init,
699 &pkt->u.alive_frame,
700 sizeof(struct iwl_init_alive_resp));
701 pwork = &priv->init_alive_start;
702 } else {
703 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
704 memcpy(&priv->card_alive, &pkt->u.alive_frame,
705 sizeof(struct iwl_alive_resp));
706 pwork = &priv->alive_start;
707 }
708
709 /* We delay the ALIVE response by 5ms to
710 * give the HW RF Kill time to activate... */
711 if (palive->is_valid == UCODE_VALID_OK)
712 queue_delayed_work(priv->workqueue, pwork,
713 msecs_to_jiffies(5));
714 else
715 IWL_WARN(priv, "uCode did not respond OK.\n");
716 }
717
718 static void iwl_bg_beacon_update(struct work_struct *work)
719 {
720 struct iwl_priv *priv =
721 container_of(work, struct iwl_priv, beacon_update);
722 struct sk_buff *beacon;
723
724 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
725 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
726
727 if (!beacon) {
728 IWL_ERR(priv, "update beacon failed\n");
729 return;
730 }
731
732 mutex_lock(&priv->mutex);
733 /* new beacon skb is allocated every time; dispose previous.*/
734 if (priv->ibss_beacon)
735 dev_kfree_skb(priv->ibss_beacon);
736
737 priv->ibss_beacon = beacon;
738 mutex_unlock(&priv->mutex);
739
740 iwl_send_beacon_cmd(priv);
741 }
742
743 /**
744 * iwl_bg_statistics_periodic - Timer callback to queue statistics
745 *
746 * This callback is provided in order to send a statistics request.
747 *
748 * This timer function is continually reset to execute within
749 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
750 * was received. We need to ensure we receive the statistics in order
751 * to update the temperature used for calibrating the TXPOWER.
752 */
753 static void iwl_bg_statistics_periodic(unsigned long data)
754 {
755 struct iwl_priv *priv = (struct iwl_priv *)data;
756
757 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
758 return;
759
760 /* dont send host command if rf-kill is on */
761 if (!iwl_is_ready_rf(priv))
762 return;
763
764 iwl_send_statistics_request(priv, CMD_ASYNC);
765 }
766
767 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
768 struct iwl_rx_mem_buffer *rxb)
769 {
770 #ifdef CONFIG_IWLWIFI_DEBUG
771 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
772 struct iwl4965_beacon_notif *beacon =
773 (struct iwl4965_beacon_notif *)pkt->u.raw;
774 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
775
776 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
777 "tsf %d %d rate %d\n",
778 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
779 beacon->beacon_notify_hdr.failure_frame,
780 le32_to_cpu(beacon->ibss_mgr_status),
781 le32_to_cpu(beacon->high_tsf),
782 le32_to_cpu(beacon->low_tsf), rate);
783 #endif
784
785 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
786 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
787 queue_work(priv->workqueue, &priv->beacon_update);
788 }
789
790 /* Handle notification from uCode that card's power state is changing
791 * due to software, hardware, or critical temperature RFKILL */
792 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
793 struct iwl_rx_mem_buffer *rxb)
794 {
795 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
796 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
797 unsigned long status = priv->status;
798
799 IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s\n",
800 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
801 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
802
803 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
804 RF_CARD_DISABLED)) {
805
806 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
807 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
808
809 if (!iwl_grab_nic_access(priv)) {
810 iwl_write_direct32(
811 priv, HBUS_TARG_MBX_C,
812 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
813
814 iwl_release_nic_access(priv);
815 }
816
817 if (!(flags & RXON_CARD_DISABLED)) {
818 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
819 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
820 if (!iwl_grab_nic_access(priv)) {
821 iwl_write_direct32(
822 priv, HBUS_TARG_MBX_C,
823 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
824
825 iwl_release_nic_access(priv);
826 }
827 }
828
829 if (flags & RF_CARD_DISABLED) {
830 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
831 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
832 iwl_read32(priv, CSR_UCODE_DRV_GP1);
833 if (!iwl_grab_nic_access(priv))
834 iwl_release_nic_access(priv);
835 }
836 }
837
838 if (flags & HW_CARD_DISABLED)
839 set_bit(STATUS_RF_KILL_HW, &priv->status);
840 else
841 clear_bit(STATUS_RF_KILL_HW, &priv->status);
842
843
844 if (flags & SW_CARD_DISABLED)
845 set_bit(STATUS_RF_KILL_SW, &priv->status);
846 else
847 clear_bit(STATUS_RF_KILL_SW, &priv->status);
848
849 if (!(flags & RXON_CARD_DISABLED))
850 iwl_scan_cancel(priv);
851
852 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
853 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
854 (test_bit(STATUS_RF_KILL_SW, &status) !=
855 test_bit(STATUS_RF_KILL_SW, &priv->status)))
856 queue_work(priv->workqueue, &priv->rf_kill);
857 else
858 wake_up_interruptible(&priv->wait_command_queue);
859 }
860
861 int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
862 {
863 int ret;
864 unsigned long flags;
865
866 spin_lock_irqsave(&priv->lock, flags);
867 ret = iwl_grab_nic_access(priv);
868 if (ret)
869 goto err;
870
871 if (src == IWL_PWR_SRC_VAUX) {
872 if (pci_pme_capable(priv->pci_dev, PCI_D3cold))
873 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
874 APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
875 ~APMG_PS_CTRL_MSK_PWR_SRC);
876 } else {
877 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
878 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
879 ~APMG_PS_CTRL_MSK_PWR_SRC);
880 }
881
882 iwl_release_nic_access(priv);
883 err:
884 spin_unlock_irqrestore(&priv->lock, flags);
885 return ret;
886 }
887
888 /**
889 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
890 *
891 * Setup the RX handlers for each of the reply types sent from the uCode
892 * to the host.
893 *
894 * This function chains into the hardware specific files for them to setup
895 * any hardware specific handlers as well.
896 */
897 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
898 {
899 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
900 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
901 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
902 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
903 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
904 iwl_rx_pm_debug_statistics_notif;
905 priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
906
907 /*
908 * The same handler is used for both the REPLY to a discrete
909 * statistics request from the host as well as for the periodic
910 * statistics notifications (after received beacons) from the uCode.
911 */
912 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
913 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
914
915 iwl_setup_spectrum_handlers(priv);
916 iwl_setup_rx_scan_handlers(priv);
917
918 /* status change handler */
919 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
920
921 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
922 iwl_rx_missed_beacon_notif;
923 /* Rx handlers */
924 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
925 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
926 /* block ack */
927 priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
928 /* Set up hardware specific Rx handlers */
929 priv->cfg->ops->lib->rx_handler_setup(priv);
930 }
931
932 /**
933 * iwl_rx_handle - Main entry function for receiving responses from uCode
934 *
935 * Uses the priv->rx_handlers callback function array to invoke
936 * the appropriate handlers, including command responses,
937 * frame-received notifications, and other notifications.
938 */
939 void iwl_rx_handle(struct iwl_priv *priv)
940 {
941 struct iwl_rx_mem_buffer *rxb;
942 struct iwl_rx_packet *pkt;
943 struct iwl_rx_queue *rxq = &priv->rxq;
944 u32 r, i;
945 int reclaim;
946 unsigned long flags;
947 u8 fill_rx = 0;
948 u32 count = 8;
949
950 /* uCode's read index (stored in shared DRAM) indicates the last Rx
951 * buffer that the driver may process (last buffer filled by ucode). */
952 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
953 i = rxq->read;
954
955 /* Rx interrupt, but nothing sent from uCode */
956 if (i == r)
957 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
958
959 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
960 fill_rx = 1;
961
962 while (i != r) {
963 rxb = rxq->queue[i];
964
965 /* If an RXB doesn't have a Rx queue slot associated with it,
966 * then a bug has been introduced in the queue refilling
967 * routines -- catch it here */
968 BUG_ON(rxb == NULL);
969
970 rxq->queue[i] = NULL;
971
972 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
973 priv->hw_params.rx_buf_size + 256,
974 PCI_DMA_FROMDEVICE);
975 pkt = (struct iwl_rx_packet *)rxb->skb->data;
976
977 /* Reclaim a command buffer only if this packet is a response
978 * to a (driver-originated) command.
979 * If the packet (e.g. Rx frame) originated from uCode,
980 * there is no command buffer to reclaim.
981 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
982 * but apparently a few don't get set; catch them here. */
983 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
984 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
985 (pkt->hdr.cmd != REPLY_RX) &&
986 (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
987 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
988 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
989 (pkt->hdr.cmd != REPLY_TX);
990
991 /* Based on type of command response or notification,
992 * handle those that need handling via function in
993 * rx_handlers table. See iwl_setup_rx_handlers() */
994 if (priv->rx_handlers[pkt->hdr.cmd]) {
995 IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r,
996 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
997 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
998 } else {
999 /* No handling needed */
1000 IWL_DEBUG_RX(priv,
1001 "r %d i %d No handler needed for %s, 0x%02x\n",
1002 r, i, get_cmd_string(pkt->hdr.cmd),
1003 pkt->hdr.cmd);
1004 }
1005
1006 if (reclaim) {
1007 /* Invoke any callbacks, transfer the skb to caller, and
1008 * fire off the (possibly) blocking iwl_send_cmd()
1009 * as we reclaim the driver command queue */
1010 if (rxb && rxb->skb)
1011 iwl_tx_cmd_complete(priv, rxb);
1012 else
1013 IWL_WARN(priv, "Claim null rxb?\n");
1014 }
1015
1016 /* For now we just don't re-use anything. We can tweak this
1017 * later to try and re-use notification packets and SKBs that
1018 * fail to Rx correctly */
1019 if (rxb->skb != NULL) {
1020 priv->alloc_rxb_skb--;
1021 dev_kfree_skb_any(rxb->skb);
1022 rxb->skb = NULL;
1023 }
1024
1025 spin_lock_irqsave(&rxq->lock, flags);
1026 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1027 spin_unlock_irqrestore(&rxq->lock, flags);
1028 i = (i + 1) & RX_QUEUE_MASK;
1029 /* If there are a lot of unused frames,
1030 * restock the Rx queue so ucode wont assert. */
1031 if (fill_rx) {
1032 count++;
1033 if (count >= 8) {
1034 priv->rxq.read = i;
1035 iwl_rx_queue_restock(priv);
1036 count = 0;
1037 }
1038 }
1039 }
1040
1041 /* Backtrack one entry */
1042 priv->rxq.read = i;
1043 iwl_rx_queue_restock(priv);
1044 }
1045
1046 /* call this function to flush any scheduled tasklet */
1047 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1048 {
1049 /* wait to make sure we flush pending tasklet*/
1050 synchronize_irq(priv->pci_dev->irq);
1051 tasklet_kill(&priv->irq_tasklet);
1052 }
1053
1054 static void iwl_error_recovery(struct iwl_priv *priv)
1055 {
1056 unsigned long flags;
1057
1058 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1059 sizeof(priv->staging_rxon));
1060 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1061 iwl_commit_rxon(priv);
1062
1063 iwl_rxon_add_station(priv, priv->bssid, 1);
1064
1065 spin_lock_irqsave(&priv->lock, flags);
1066 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1067 priv->error_recovering = 0;
1068 spin_unlock_irqrestore(&priv->lock, flags);
1069 }
1070
1071 static void iwl_irq_tasklet(struct iwl_priv *priv)
1072 {
1073 u32 inta, handled = 0;
1074 u32 inta_fh;
1075 unsigned long flags;
1076 #ifdef CONFIG_IWLWIFI_DEBUG
1077 u32 inta_mask;
1078 #endif
1079
1080 spin_lock_irqsave(&priv->lock, flags);
1081
1082 /* Ack/clear/reset pending uCode interrupts.
1083 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1084 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1085 inta = iwl_read32(priv, CSR_INT);
1086 iwl_write32(priv, CSR_INT, inta);
1087
1088 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1089 * Any new interrupts that happen after this, either while we're
1090 * in this tasklet, or later, will show up in next ISR/tasklet. */
1091 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1092 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1093
1094 #ifdef CONFIG_IWLWIFI_DEBUG
1095 if (priv->debug_level & IWL_DL_ISR) {
1096 /* just for debug */
1097 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1098 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1099 inta, inta_mask, inta_fh);
1100 }
1101 #endif
1102
1103 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1104 * atomic, make sure that inta covers all the interrupts that
1105 * we've discovered, even if FH interrupt came in just after
1106 * reading CSR_INT. */
1107 if (inta_fh & CSR49_FH_INT_RX_MASK)
1108 inta |= CSR_INT_BIT_FH_RX;
1109 if (inta_fh & CSR49_FH_INT_TX_MASK)
1110 inta |= CSR_INT_BIT_FH_TX;
1111
1112 /* Now service all interrupt bits discovered above. */
1113 if (inta & CSR_INT_BIT_HW_ERR) {
1114 IWL_ERR(priv, "Microcode HW error detected. Restarting.\n");
1115
1116 /* Tell the device to stop sending interrupts */
1117 iwl_disable_interrupts(priv);
1118
1119 iwl_irq_handle_error(priv);
1120
1121 handled |= CSR_INT_BIT_HW_ERR;
1122
1123 spin_unlock_irqrestore(&priv->lock, flags);
1124
1125 return;
1126 }
1127
1128 #ifdef CONFIG_IWLWIFI_DEBUG
1129 if (priv->debug_level & (IWL_DL_ISR)) {
1130 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1131 if (inta & CSR_INT_BIT_SCD)
1132 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1133 "the frame/frames.\n");
1134
1135 /* Alive notification via Rx interrupt will do the real work */
1136 if (inta & CSR_INT_BIT_ALIVE)
1137 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1138 }
1139 #endif
1140 /* Safely ignore these bits for debug checks below */
1141 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1142
1143 /* HW RF KILL switch toggled */
1144 if (inta & CSR_INT_BIT_RF_KILL) {
1145 int hw_rf_kill = 0;
1146 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1147 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1148 hw_rf_kill = 1;
1149
1150 IWL_DEBUG_RF_KILL(priv, "RF_KILL bit toggled to %s.\n",
1151 hw_rf_kill ? "disable radio" : "enable radio");
1152
1153 /* driver only loads ucode once setting the interface up.
1154 * the driver allows loading the ucode even if the radio
1155 * is killed. Hence update the killswitch state here. The
1156 * rfkill handler will care about restarting if needed.
1157 */
1158 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1159 if (hw_rf_kill)
1160 set_bit(STATUS_RF_KILL_HW, &priv->status);
1161 else
1162 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1163 queue_work(priv->workqueue, &priv->rf_kill);
1164 }
1165
1166 handled |= CSR_INT_BIT_RF_KILL;
1167 }
1168
1169 /* Chip got too hot and stopped itself */
1170 if (inta & CSR_INT_BIT_CT_KILL) {
1171 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1172 handled |= CSR_INT_BIT_CT_KILL;
1173 }
1174
1175 /* Error detected by uCode */
1176 if (inta & CSR_INT_BIT_SW_ERR) {
1177 IWL_ERR(priv, "Microcode SW error detected. "
1178 " Restarting 0x%X.\n", inta);
1179 iwl_irq_handle_error(priv);
1180 handled |= CSR_INT_BIT_SW_ERR;
1181 }
1182
1183 /* uCode wakes up after power-down sleep */
1184 if (inta & CSR_INT_BIT_WAKEUP) {
1185 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1186 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1187 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1188 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1189 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1190 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1191 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1192 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1193
1194 handled |= CSR_INT_BIT_WAKEUP;
1195 }
1196
1197 /* All uCode command responses, including Tx command responses,
1198 * Rx "responses" (frame-received notification), and other
1199 * notifications from uCode come through here*/
1200 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1201 iwl_rx_handle(priv);
1202 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1203 }
1204
1205 if (inta & CSR_INT_BIT_FH_TX) {
1206 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1207 handled |= CSR_INT_BIT_FH_TX;
1208 /* FH finished to write, send event */
1209 priv->ucode_write_complete = 1;
1210 wake_up_interruptible(&priv->wait_command_queue);
1211 }
1212
1213 if (inta & ~handled)
1214 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1215
1216 if (inta & ~CSR_INI_SET_MASK) {
1217 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1218 inta & ~CSR_INI_SET_MASK);
1219 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
1220 }
1221
1222 /* Re-enable all interrupts */
1223 /* only Re-enable if diabled by irq */
1224 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1225 iwl_enable_interrupts(priv);
1226
1227 #ifdef CONFIG_IWLWIFI_DEBUG
1228 if (priv->debug_level & (IWL_DL_ISR)) {
1229 inta = iwl_read32(priv, CSR_INT);
1230 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1231 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1232 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1233 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1234 }
1235 #endif
1236 spin_unlock_irqrestore(&priv->lock, flags);
1237 }
1238
1239 /******************************************************************************
1240 *
1241 * uCode download functions
1242 *
1243 ******************************************************************************/
1244
1245 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1246 {
1247 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1248 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1249 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1250 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1251 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1252 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1253 }
1254
1255 static void iwl_nic_start(struct iwl_priv *priv)
1256 {
1257 /* Remove all resets to allow NIC to operate */
1258 iwl_write32(priv, CSR_RESET, 0);
1259 }
1260
1261
1262 /**
1263 * iwl_read_ucode - Read uCode images from disk file.
1264 *
1265 * Copy into buffers for card to fetch via bus-mastering
1266 */
1267 static int iwl_read_ucode(struct iwl_priv *priv)
1268 {
1269 struct iwl_ucode *ucode;
1270 int ret = -EINVAL, index;
1271 const struct firmware *ucode_raw;
1272 const char *name_pre = priv->cfg->fw_name_pre;
1273 const unsigned int api_max = priv->cfg->ucode_api_max;
1274 const unsigned int api_min = priv->cfg->ucode_api_min;
1275 char buf[25];
1276 u8 *src;
1277 size_t len;
1278 u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
1279
1280 /* Ask kernel firmware_class module to get the boot firmware off disk.
1281 * request_firmware() is synchronous, file is in memory on return. */
1282 for (index = api_max; index >= api_min; index--) {
1283 sprintf(buf, "%s%d%s", name_pre, index, ".ucode");
1284 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
1285 if (ret < 0) {
1286 IWL_ERR(priv, "%s firmware file req failed: %d\n",
1287 buf, ret);
1288 if (ret == -ENOENT)
1289 continue;
1290 else
1291 goto error;
1292 } else {
1293 if (index < api_max)
1294 IWL_ERR(priv, "Loaded firmware %s, "
1295 "which is deprecated. "
1296 "Please use API v%u instead.\n",
1297 buf, api_max);
1298
1299 IWL_DEBUG_INFO(priv, "Got firmware '%s' file (%zd bytes) from disk\n",
1300 buf, ucode_raw->size);
1301 break;
1302 }
1303 }
1304
1305 if (ret < 0)
1306 goto error;
1307
1308 /* Make sure that we got at least our header! */
1309 if (ucode_raw->size < sizeof(*ucode)) {
1310 IWL_ERR(priv, "File size way too small!\n");
1311 ret = -EINVAL;
1312 goto err_release;
1313 }
1314
1315 /* Data from ucode file: header followed by uCode images */
1316 ucode = (void *)ucode_raw->data;
1317
1318 priv->ucode_ver = le32_to_cpu(ucode->ver);
1319 api_ver = IWL_UCODE_API(priv->ucode_ver);
1320 inst_size = le32_to_cpu(ucode->inst_size);
1321 data_size = le32_to_cpu(ucode->data_size);
1322 init_size = le32_to_cpu(ucode->init_size);
1323 init_data_size = le32_to_cpu(ucode->init_data_size);
1324 boot_size = le32_to_cpu(ucode->boot_size);
1325
1326 /* api_ver should match the api version forming part of the
1327 * firmware filename ... but we don't check for that and only rely
1328 * on the API version read from firmware header from here on forward */
1329
1330 if (api_ver < api_min || api_ver > api_max) {
1331 IWL_ERR(priv, "Driver unable to support your firmware API. "
1332 "Driver supports v%u, firmware is v%u.\n",
1333 api_max, api_ver);
1334 priv->ucode_ver = 0;
1335 ret = -EINVAL;
1336 goto err_release;
1337 }
1338 if (api_ver != api_max)
1339 IWL_ERR(priv, "Firmware has old API version. Expected v%u, "
1340 "got v%u. New firmware can be obtained "
1341 "from http://www.intellinuxwireless.org.\n",
1342 api_max, api_ver);
1343
1344 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
1345 IWL_UCODE_MAJOR(priv->ucode_ver),
1346 IWL_UCODE_MINOR(priv->ucode_ver),
1347 IWL_UCODE_API(priv->ucode_ver),
1348 IWL_UCODE_SERIAL(priv->ucode_ver));
1349
1350 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1351 priv->ucode_ver);
1352 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
1353 inst_size);
1354 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
1355 data_size);
1356 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
1357 init_size);
1358 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
1359 init_data_size);
1360 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
1361 boot_size);
1362
1363 /* Verify size of file vs. image size info in file's header */
1364 if (ucode_raw->size < sizeof(*ucode) +
1365 inst_size + data_size + init_size +
1366 init_data_size + boot_size) {
1367
1368 IWL_DEBUG_INFO(priv, "uCode file size %d too small\n",
1369 (int)ucode_raw->size);
1370 ret = -EINVAL;
1371 goto err_release;
1372 }
1373
1374 /* Verify that uCode images will fit in card's SRAM */
1375 if (inst_size > priv->hw_params.max_inst_size) {
1376 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
1377 inst_size);
1378 ret = -EINVAL;
1379 goto err_release;
1380 }
1381
1382 if (data_size > priv->hw_params.max_data_size) {
1383 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
1384 data_size);
1385 ret = -EINVAL;
1386 goto err_release;
1387 }
1388 if (init_size > priv->hw_params.max_inst_size) {
1389 IWL_INFO(priv, "uCode init instr len %d too large to fit in\n",
1390 init_size);
1391 ret = -EINVAL;
1392 goto err_release;
1393 }
1394 if (init_data_size > priv->hw_params.max_data_size) {
1395 IWL_INFO(priv, "uCode init data len %d too large to fit in\n",
1396 init_data_size);
1397 ret = -EINVAL;
1398 goto err_release;
1399 }
1400 if (boot_size > priv->hw_params.max_bsm_size) {
1401 IWL_INFO(priv, "uCode boot instr len %d too large to fit in\n",
1402 boot_size);
1403 ret = -EINVAL;
1404 goto err_release;
1405 }
1406
1407 /* Allocate ucode buffers for card's bus-master loading ... */
1408
1409 /* Runtime instructions and 2 copies of data:
1410 * 1) unmodified from disk
1411 * 2) backup cache for save/restore during power-downs */
1412 priv->ucode_code.len = inst_size;
1413 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1414
1415 priv->ucode_data.len = data_size;
1416 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1417
1418 priv->ucode_data_backup.len = data_size;
1419 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1420
1421 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
1422 !priv->ucode_data_backup.v_addr)
1423 goto err_pci_alloc;
1424
1425 /* Initialization instructions and data */
1426 if (init_size && init_data_size) {
1427 priv->ucode_init.len = init_size;
1428 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1429
1430 priv->ucode_init_data.len = init_data_size;
1431 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1432
1433 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1434 goto err_pci_alloc;
1435 }
1436
1437 /* Bootstrap (instructions only, no data) */
1438 if (boot_size) {
1439 priv->ucode_boot.len = boot_size;
1440 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1441
1442 if (!priv->ucode_boot.v_addr)
1443 goto err_pci_alloc;
1444 }
1445
1446 /* Copy images into buffers for card's bus-master reads ... */
1447
1448 /* Runtime instructions (first block of data in file) */
1449 src = &ucode->data[0];
1450 len = priv->ucode_code.len;
1451 IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode instr len %Zd\n", len);
1452 memcpy(priv->ucode_code.v_addr, src, len);
1453 IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1454 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1455
1456 /* Runtime data (2nd block)
1457 * NOTE: Copy into backup buffer will be done in iwl_up() */
1458 src = &ucode->data[inst_size];
1459 len = priv->ucode_data.len;
1460 IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode data len %Zd\n", len);
1461 memcpy(priv->ucode_data.v_addr, src, len);
1462 memcpy(priv->ucode_data_backup.v_addr, src, len);
1463
1464 /* Initialization instructions (3rd block) */
1465 if (init_size) {
1466 src = &ucode->data[inst_size + data_size];
1467 len = priv->ucode_init.len;
1468 IWL_DEBUG_INFO(priv, "Copying (but not loading) init instr len %Zd\n",
1469 len);
1470 memcpy(priv->ucode_init.v_addr, src, len);
1471 }
1472
1473 /* Initialization data (4th block) */
1474 if (init_data_size) {
1475 src = &ucode->data[inst_size + data_size + init_size];
1476 len = priv->ucode_init_data.len;
1477 IWL_DEBUG_INFO(priv, "Copying (but not loading) init data len %Zd\n",
1478 len);
1479 memcpy(priv->ucode_init_data.v_addr, src, len);
1480 }
1481
1482 /* Bootstrap instructions (5th block) */
1483 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1484 len = priv->ucode_boot.len;
1485 IWL_DEBUG_INFO(priv, "Copying (but not loading) boot instr len %Zd\n", len);
1486 memcpy(priv->ucode_boot.v_addr, src, len);
1487
1488 /* We have our copies now, allow OS release its copies */
1489 release_firmware(ucode_raw);
1490 return 0;
1491
1492 err_pci_alloc:
1493 IWL_ERR(priv, "failed to allocate pci memory\n");
1494 ret = -ENOMEM;
1495 iwl_dealloc_ucode_pci(priv);
1496
1497 err_release:
1498 release_firmware(ucode_raw);
1499
1500 error:
1501 return ret;
1502 }
1503
1504 /* temporary */
1505 static int iwl_mac_beacon_update(struct ieee80211_hw *hw,
1506 struct sk_buff *skb);
1507
1508 /**
1509 * iwl_alive_start - called after REPLY_ALIVE notification received
1510 * from protocol/runtime uCode (initialization uCode's
1511 * Alive gets handled by iwl_init_alive_start()).
1512 */
1513 static void iwl_alive_start(struct iwl_priv *priv)
1514 {
1515 int ret = 0;
1516
1517 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1518
1519 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1520 /* We had an error bringing up the hardware, so take it
1521 * all the way back down so we can try again */
1522 IWL_DEBUG_INFO(priv, "Alive failed.\n");
1523 goto restart;
1524 }
1525
1526 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1527 * This is a paranoid check, because we would not have gotten the
1528 * "runtime" alive if code weren't properly loaded. */
1529 if (iwl_verify_ucode(priv)) {
1530 /* Runtime instruction load was bad;
1531 * take it all the way back down so we can try again */
1532 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
1533 goto restart;
1534 }
1535
1536 iwl_clear_stations_table(priv);
1537 ret = priv->cfg->ops->lib->alive_notify(priv);
1538 if (ret) {
1539 IWL_WARN(priv,
1540 "Could not complete ALIVE transition [ntf]: %d\n", ret);
1541 goto restart;
1542 }
1543
1544 /* After the ALIVE response, we can send host commands to the uCode */
1545 set_bit(STATUS_ALIVE, &priv->status);
1546
1547 if (iwl_is_rfkill(priv))
1548 return;
1549
1550 ieee80211_wake_queues(priv->hw);
1551
1552 priv->active_rate = priv->rates_mask;
1553 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1554
1555 if (iwl_is_associated(priv)) {
1556 struct iwl_rxon_cmd *active_rxon =
1557 (struct iwl_rxon_cmd *)&priv->active_rxon;
1558 /* apply any changes in staging */
1559 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
1560 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1561 } else {
1562 /* Initialize our rx_config data */
1563 iwl_connection_init_rx_config(priv, priv->iw_mode);
1564 iwl_set_rxon_chain(priv);
1565 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1566 }
1567
1568 /* Configure Bluetooth device coexistence support */
1569 iwl_send_bt_config(priv);
1570
1571 iwl_reset_run_time_calib(priv);
1572
1573 /* Configure the adapter for unassociated operation */
1574 iwl_commit_rxon(priv);
1575
1576 /* At this point, the NIC is initialized and operational */
1577 iwl_rf_kill_ct_config(priv);
1578
1579 iwl_leds_register(priv);
1580
1581 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
1582 set_bit(STATUS_READY, &priv->status);
1583 wake_up_interruptible(&priv->wait_command_queue);
1584
1585 if (priv->error_recovering)
1586 iwl_error_recovery(priv);
1587
1588 iwl_power_update_mode(priv, 1);
1589
1590 /* reassociate for ADHOC mode */
1591 if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
1592 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
1593 priv->vif);
1594 if (beacon)
1595 iwl_mac_beacon_update(priv->hw, beacon);
1596 }
1597
1598
1599 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
1600 iwl_set_mode(priv, priv->iw_mode);
1601
1602 return;
1603
1604 restart:
1605 queue_work(priv->workqueue, &priv->restart);
1606 }
1607
1608 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1609
1610 static void __iwl_down(struct iwl_priv *priv)
1611 {
1612 unsigned long flags;
1613 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
1614
1615 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
1616
1617 if (!exit_pending)
1618 set_bit(STATUS_EXIT_PENDING, &priv->status);
1619
1620 iwl_leds_unregister(priv);
1621
1622 iwl_clear_stations_table(priv);
1623
1624 /* Unblock any waiting calls */
1625 wake_up_interruptible_all(&priv->wait_command_queue);
1626
1627 /* Wipe out the EXIT_PENDING status bit if we are not actually
1628 * exiting the module */
1629 if (!exit_pending)
1630 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1631
1632 /* stop and reset the on-board processor */
1633 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
1634
1635 /* tell the device to stop sending interrupts */
1636 spin_lock_irqsave(&priv->lock, flags);
1637 iwl_disable_interrupts(priv);
1638 spin_unlock_irqrestore(&priv->lock, flags);
1639 iwl_synchronize_irq(priv);
1640
1641 if (priv->mac80211_registered)
1642 ieee80211_stop_queues(priv->hw);
1643
1644 /* If we have not previously called iwl_init() then
1645 * clear all bits but the RF Kill and SUSPEND bits and return */
1646 if (!iwl_is_init(priv)) {
1647 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1648 STATUS_RF_KILL_HW |
1649 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
1650 STATUS_RF_KILL_SW |
1651 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1652 STATUS_GEO_CONFIGURED |
1653 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
1654 STATUS_IN_SUSPEND |
1655 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1656 STATUS_EXIT_PENDING;
1657 goto exit;
1658 }
1659
1660 /* ...otherwise clear out all the status bits but the RF Kill and
1661 * SUSPEND bits and continue taking the NIC down. */
1662 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1663 STATUS_RF_KILL_HW |
1664 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
1665 STATUS_RF_KILL_SW |
1666 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1667 STATUS_GEO_CONFIGURED |
1668 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
1669 STATUS_IN_SUSPEND |
1670 test_bit(STATUS_FW_ERROR, &priv->status) <<
1671 STATUS_FW_ERROR |
1672 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1673 STATUS_EXIT_PENDING;
1674
1675 spin_lock_irqsave(&priv->lock, flags);
1676 iwl_clear_bit(priv, CSR_GP_CNTRL,
1677 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
1678 spin_unlock_irqrestore(&priv->lock, flags);
1679
1680 iwl_txq_ctx_stop(priv);
1681 iwl_rxq_stop(priv);
1682
1683 spin_lock_irqsave(&priv->lock, flags);
1684 if (!iwl_grab_nic_access(priv)) {
1685 iwl_write_prph(priv, APMG_CLK_DIS_REG,
1686 APMG_CLK_VAL_DMA_CLK_RQT);
1687 iwl_release_nic_access(priv);
1688 }
1689 spin_unlock_irqrestore(&priv->lock, flags);
1690
1691 udelay(5);
1692
1693 /* FIXME: apm_ops.suspend(priv) */
1694 if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
1695 priv->cfg->ops->lib->apm_ops.stop(priv);
1696 else
1697 priv->cfg->ops->lib->apm_ops.reset(priv);
1698 exit:
1699 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
1700
1701 if (priv->ibss_beacon)
1702 dev_kfree_skb(priv->ibss_beacon);
1703 priv->ibss_beacon = NULL;
1704
1705 /* clear out any free frames */
1706 iwl_clear_free_frames(priv);
1707 }
1708
1709 static void iwl_down(struct iwl_priv *priv)
1710 {
1711 mutex_lock(&priv->mutex);
1712 __iwl_down(priv);
1713 mutex_unlock(&priv->mutex);
1714
1715 iwl_cancel_deferred_work(priv);
1716 }
1717
1718 #define MAX_HW_RESTARTS 5
1719
1720 static int __iwl_up(struct iwl_priv *priv)
1721 {
1722 int i;
1723 int ret;
1724
1725 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1726 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
1727 return -EIO;
1728 }
1729
1730 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
1731 IWL_ERR(priv, "ucode not available for device bringup\n");
1732 return -EIO;
1733 }
1734
1735 /* If platform's RF_KILL switch is NOT set to KILL */
1736 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
1737 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1738 else
1739 set_bit(STATUS_RF_KILL_HW, &priv->status);
1740
1741 if (iwl_is_rfkill(priv)) {
1742 iwl_enable_interrupts(priv);
1743 IWL_WARN(priv, "Radio disabled by %s RF Kill switch\n",
1744 test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
1745 return 0;
1746 }
1747
1748 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
1749
1750 ret = iwl_hw_nic_init(priv);
1751 if (ret) {
1752 IWL_ERR(priv, "Unable to init nic\n");
1753 return ret;
1754 }
1755
1756 /* make sure rfkill handshake bits are cleared */
1757 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1758 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1759 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1760
1761 /* clear (again), then enable host interrupts */
1762 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
1763 iwl_enable_interrupts(priv);
1764
1765 /* really make sure rfkill handshake bits are cleared */
1766 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1767 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1768
1769 /* Copy original ucode data image from disk into backup cache.
1770 * This will be used to initialize the on-board processor's
1771 * data SRAM for a clean start when the runtime program first loads. */
1772 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
1773 priv->ucode_data.len);
1774
1775 for (i = 0; i < MAX_HW_RESTARTS; i++) {
1776
1777 iwl_clear_stations_table(priv);
1778
1779 /* load bootstrap state machine,
1780 * load bootstrap program into processor's memory,
1781 * prepare to load the "initialize" uCode */
1782 ret = priv->cfg->ops->lib->load_ucode(priv);
1783
1784 if (ret) {
1785 IWL_ERR(priv, "Unable to set up bootstrap uCode: %d\n",
1786 ret);
1787 continue;
1788 }
1789
1790 /* Clear out the uCode error bit if it is set */
1791 clear_bit(STATUS_FW_ERROR, &priv->status);
1792
1793 /* start card; "initialize" will load runtime ucode */
1794 iwl_nic_start(priv);
1795
1796 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
1797
1798 return 0;
1799 }
1800
1801 set_bit(STATUS_EXIT_PENDING, &priv->status);
1802 __iwl_down(priv);
1803 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1804
1805 /* tried to restart and config the device for as long as our
1806 * patience could withstand */
1807 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
1808 return -EIO;
1809 }
1810
1811
1812 /*****************************************************************************
1813 *
1814 * Workqueue callbacks
1815 *
1816 *****************************************************************************/
1817
1818 static void iwl_bg_init_alive_start(struct work_struct *data)
1819 {
1820 struct iwl_priv *priv =
1821 container_of(data, struct iwl_priv, init_alive_start.work);
1822
1823 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1824 return;
1825
1826 mutex_lock(&priv->mutex);
1827 priv->cfg->ops->lib->init_alive_start(priv);
1828 mutex_unlock(&priv->mutex);
1829 }
1830
1831 static void iwl_bg_alive_start(struct work_struct *data)
1832 {
1833 struct iwl_priv *priv =
1834 container_of(data, struct iwl_priv, alive_start.work);
1835
1836 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1837 return;
1838
1839 mutex_lock(&priv->mutex);
1840 iwl_alive_start(priv);
1841 mutex_unlock(&priv->mutex);
1842 }
1843
1844 static void iwl_bg_run_time_calib_work(struct work_struct *work)
1845 {
1846 struct iwl_priv *priv = container_of(work, struct iwl_priv,
1847 run_time_calib_work);
1848
1849 mutex_lock(&priv->mutex);
1850
1851 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
1852 test_bit(STATUS_SCANNING, &priv->status)) {
1853 mutex_unlock(&priv->mutex);
1854 return;
1855 }
1856
1857 if (priv->start_calib) {
1858 iwl_chain_noise_calibration(priv, &priv->statistics);
1859
1860 iwl_sensitivity_calibration(priv, &priv->statistics);
1861 }
1862
1863 mutex_unlock(&priv->mutex);
1864 return;
1865 }
1866
1867 static void iwl_bg_up(struct work_struct *data)
1868 {
1869 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
1870
1871 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1872 return;
1873
1874 mutex_lock(&priv->mutex);
1875 __iwl_up(priv);
1876 mutex_unlock(&priv->mutex);
1877 iwl_rfkill_set_hw_state(priv);
1878 }
1879
1880 static void iwl_bg_restart(struct work_struct *data)
1881 {
1882 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
1883
1884 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1885 return;
1886
1887 iwl_down(priv);
1888 queue_work(priv->workqueue, &priv->up);
1889 }
1890
1891 static void iwl_bg_rx_replenish(struct work_struct *data)
1892 {
1893 struct iwl_priv *priv =
1894 container_of(data, struct iwl_priv, rx_replenish);
1895
1896 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1897 return;
1898
1899 mutex_lock(&priv->mutex);
1900 iwl_rx_replenish(priv);
1901 mutex_unlock(&priv->mutex);
1902 }
1903
1904 #define IWL_DELAY_NEXT_SCAN (HZ*2)
1905
1906 static void iwl_post_associate(struct iwl_priv *priv)
1907 {
1908 struct ieee80211_conf *conf = NULL;
1909 int ret = 0;
1910 unsigned long flags;
1911
1912 if (priv->iw_mode == NL80211_IFTYPE_AP) {
1913 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
1914 return;
1915 }
1916
1917 IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
1918 priv->assoc_id, priv->active_rxon.bssid_addr);
1919
1920
1921 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1922 return;
1923
1924
1925 if (!priv->vif || !priv->is_open)
1926 return;
1927
1928 iwl_power_cancel_timeout(priv);
1929 iwl_scan_cancel_timeout(priv, 200);
1930
1931 conf = ieee80211_get_hw_conf(priv->hw);
1932
1933 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1934 iwl_commit_rxon(priv);
1935
1936 iwl_setup_rxon_timing(priv);
1937 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
1938 sizeof(priv->rxon_timing), &priv->rxon_timing);
1939 if (ret)
1940 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
1941 "Attempting to continue.\n");
1942
1943 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
1944
1945 iwl_set_rxon_ht(priv, &priv->current_ht_config);
1946
1947 iwl_set_rxon_chain(priv);
1948 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
1949
1950 IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
1951 priv->assoc_id, priv->beacon_int);
1952
1953 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
1954 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1955 else
1956 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1957
1958 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
1959 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1960 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1961 else
1962 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1963
1964 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1965 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1966
1967 }
1968
1969 iwl_commit_rxon(priv);
1970
1971 switch (priv->iw_mode) {
1972 case NL80211_IFTYPE_STATION:
1973 break;
1974
1975 case NL80211_IFTYPE_ADHOC:
1976
1977 /* assume default assoc id */
1978 priv->assoc_id = 1;
1979
1980 iwl_rxon_add_station(priv, priv->bssid, 0);
1981 iwl_send_beacon_cmd(priv);
1982
1983 break;
1984
1985 default:
1986 IWL_ERR(priv, "%s Should not be called in %d mode\n",
1987 __func__, priv->iw_mode);
1988 break;
1989 }
1990
1991 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1992 priv->assoc_station_added = 1;
1993
1994 spin_lock_irqsave(&priv->lock, flags);
1995 iwl_activate_qos(priv, 0);
1996 spin_unlock_irqrestore(&priv->lock, flags);
1997
1998 /* the chain noise calibration will enabled PM upon completion
1999 * If chain noise has already been run, then we need to enable
2000 * power management here */
2001 if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2002 iwl_power_enable_management(priv);
2003
2004 /* Enable Rx differential gain and sensitivity calibrations */
2005 iwl_chain_noise_reset(priv);
2006 priv->start_calib = 1;
2007
2008 }
2009
2010 /*****************************************************************************
2011 *
2012 * mac80211 entry point functions
2013 *
2014 *****************************************************************************/
2015
2016 #define UCODE_READY_TIMEOUT (4 * HZ)
2017
2018 static int iwl_mac_start(struct ieee80211_hw *hw)
2019 {
2020 struct iwl_priv *priv = hw->priv;
2021 int ret;
2022
2023 IWL_DEBUG_MAC80211(priv, "enter\n");
2024
2025 /* we should be verifying the device is ready to be opened */
2026 mutex_lock(&priv->mutex);
2027
2028 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2029 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2030 * ucode filename and max sizes are card-specific. */
2031
2032 if (!priv->ucode_code.len) {
2033 ret = iwl_read_ucode(priv);
2034 if (ret) {
2035 IWL_ERR(priv, "Could not read microcode: %d\n", ret);
2036 mutex_unlock(&priv->mutex);
2037 return ret;
2038 }
2039 }
2040
2041 ret = __iwl_up(priv);
2042
2043 mutex_unlock(&priv->mutex);
2044
2045 iwl_rfkill_set_hw_state(priv);
2046
2047 if (ret)
2048 return ret;
2049
2050 if (iwl_is_rfkill(priv))
2051 goto out;
2052
2053 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
2054
2055 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2056 return 0;
2057
2058 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2059 * mac80211 will not be run successfully. */
2060 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2061 test_bit(STATUS_READY, &priv->status),
2062 UCODE_READY_TIMEOUT);
2063 if (!ret) {
2064 if (!test_bit(STATUS_READY, &priv->status)) {
2065 IWL_ERR(priv, "START_ALIVE timeout after %dms.\n",
2066 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2067 return -ETIMEDOUT;
2068 }
2069 }
2070
2071 out:
2072 priv->is_open = 1;
2073 IWL_DEBUG_MAC80211(priv, "leave\n");
2074 return 0;
2075 }
2076
2077 static void iwl_mac_stop(struct ieee80211_hw *hw)
2078 {
2079 struct iwl_priv *priv = hw->priv;
2080
2081 IWL_DEBUG_MAC80211(priv, "enter\n");
2082
2083 if (!priv->is_open) {
2084 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
2085 return;
2086 }
2087
2088 priv->is_open = 0;
2089
2090 if (iwl_is_ready_rf(priv)) {
2091 /* stop mac, cancel any scan request and clear
2092 * RXON_FILTER_ASSOC_MSK BIT
2093 */
2094 mutex_lock(&priv->mutex);
2095 iwl_scan_cancel_timeout(priv, 100);
2096 mutex_unlock(&priv->mutex);
2097 }
2098
2099 iwl_down(priv);
2100
2101 flush_workqueue(priv->workqueue);
2102
2103 /* enable interrupts again in order to receive rfkill changes */
2104 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2105 iwl_enable_interrupts(priv);
2106
2107 IWL_DEBUG_MAC80211(priv, "leave\n");
2108 }
2109
2110 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2111 {
2112 struct iwl_priv *priv = hw->priv;
2113
2114 IWL_DEBUG_MACDUMP(priv, "enter\n");
2115
2116 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2117 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2118
2119 if (iwl_tx_skb(priv, skb))
2120 dev_kfree_skb_any(skb);
2121
2122 IWL_DEBUG_MACDUMP(priv, "leave\n");
2123 return NETDEV_TX_OK;
2124 }
2125
2126 static int iwl_mac_add_interface(struct ieee80211_hw *hw,
2127 struct ieee80211_if_init_conf *conf)
2128 {
2129 struct iwl_priv *priv = hw->priv;
2130 unsigned long flags;
2131
2132 IWL_DEBUG_MAC80211(priv, "enter: type %d\n", conf->type);
2133
2134 if (priv->vif) {
2135 IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
2136 return -EOPNOTSUPP;
2137 }
2138
2139 spin_lock_irqsave(&priv->lock, flags);
2140 priv->vif = conf->vif;
2141 priv->iw_mode = conf->type;
2142
2143 spin_unlock_irqrestore(&priv->lock, flags);
2144
2145 mutex_lock(&priv->mutex);
2146
2147 if (conf->mac_addr) {
2148 IWL_DEBUG_MAC80211(priv, "Set %pM\n", conf->mac_addr);
2149 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2150 }
2151
2152 if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2153 /* we are not ready, will run again when ready */
2154 set_bit(STATUS_MODE_PENDING, &priv->status);
2155
2156 mutex_unlock(&priv->mutex);
2157
2158 IWL_DEBUG_MAC80211(priv, "leave\n");
2159 return 0;
2160 }
2161
2162 /**
2163 * iwl_mac_config - mac80211 config callback
2164 *
2165 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2166 * be set inappropriately and the driver currently sets the hardware up to
2167 * use it whenever needed.
2168 */
2169 static int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2170 {
2171 struct iwl_priv *priv = hw->priv;
2172 const struct iwl_channel_info *ch_info;
2173 struct ieee80211_conf *conf = &hw->conf;
2174 unsigned long flags = 0;
2175 int ret = 0;
2176 u16 ch;
2177 int scan_active = 0;
2178
2179 mutex_lock(&priv->mutex);
2180 IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n",
2181 conf->channel->hw_value, changed);
2182
2183 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2184 test_bit(STATUS_SCANNING, &priv->status))) {
2185 scan_active = 1;
2186 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
2187 }
2188
2189
2190 /* during scanning mac80211 will delay channel setting until
2191 * scan finish with changed = 0
2192 */
2193 if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
2194 if (scan_active)
2195 goto set_ch_out;
2196
2197 ch = ieee80211_frequency_to_channel(conf->channel->center_freq);
2198 ch_info = iwl_get_channel_info(priv, conf->channel->band, ch);
2199 if (!is_channel_valid(ch_info)) {
2200 IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
2201 ret = -EINVAL;
2202 goto set_ch_out;
2203 }
2204
2205 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2206 !is_channel_ibss(ch_info)) {
2207 IWL_ERR(priv, "channel %d in band %d not "
2208 "IBSS channel\n",
2209 conf->channel->hw_value, conf->channel->band);
2210 ret = -EINVAL;
2211 goto set_ch_out;
2212 }
2213
2214 priv->current_ht_config.is_ht = conf_is_ht(conf);
2215
2216 spin_lock_irqsave(&priv->lock, flags);
2217
2218
2219 /* if we are switching from ht to 2.4 clear flags
2220 * from any ht related info since 2.4 does not
2221 * support ht */
2222 if ((le16_to_cpu(priv->staging_rxon.channel) != ch))
2223 priv->staging_rxon.flags = 0;
2224
2225 iwl_set_rxon_channel(priv, conf->channel);
2226
2227 iwl_set_flags_for_band(priv, conf->channel->band);
2228 spin_unlock_irqrestore(&priv->lock, flags);
2229 set_ch_out:
2230 /* The list of supported rates and rate mask can be different
2231 * for each band; since the band may have changed, reset
2232 * the rate mask to what mac80211 lists */
2233 iwl_set_rate(priv);
2234 }
2235
2236 if (changed & IEEE80211_CONF_CHANGE_PS) {
2237 if (conf->flags & IEEE80211_CONF_PS)
2238 ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
2239 else
2240 ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
2241 if (ret)
2242 IWL_DEBUG_MAC80211(priv, "Error setting power level\n");
2243
2244 }
2245
2246 if (changed & IEEE80211_CONF_CHANGE_POWER) {
2247 IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
2248 priv->tx_power_user_lmt, conf->power_level);
2249
2250 iwl_set_tx_power(priv, conf->power_level, false);
2251 }
2252
2253 /* call to ensure that 4965 rx_chain is set properly in monitor mode */
2254 iwl_set_rxon_chain(priv);
2255
2256 if (changed & IEEE80211_CONF_CHANGE_RADIO_ENABLED) {
2257 if (conf->radio_enabled &&
2258 iwl_radio_kill_sw_enable_radio(priv)) {
2259 IWL_DEBUG_MAC80211(priv, "leave - RF-KILL - "
2260 "waiting for uCode\n");
2261 goto out;
2262 }
2263
2264 if (!conf->radio_enabled)
2265 iwl_radio_kill_sw_disable_radio(priv);
2266 }
2267
2268 if (!conf->radio_enabled) {
2269 IWL_DEBUG_MAC80211(priv, "leave - radio disabled\n");
2270 goto out;
2271 }
2272
2273 if (!iwl_is_ready(priv)) {
2274 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2275 goto out;
2276 }
2277
2278 if (scan_active)
2279 goto out;
2280
2281 if (memcmp(&priv->active_rxon,
2282 &priv->staging_rxon, sizeof(priv->staging_rxon)))
2283 iwl_commit_rxon(priv);
2284 else
2285 IWL_DEBUG_INFO(priv, "No re-sending same RXON configuration.\n");
2286
2287
2288 out:
2289 IWL_DEBUG_MAC80211(priv, "leave\n");
2290 mutex_unlock(&priv->mutex);
2291 return ret;
2292 }
2293
2294 static void iwl_config_ap(struct iwl_priv *priv)
2295 {
2296 int ret = 0;
2297 unsigned long flags;
2298
2299 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2300 return;
2301
2302 /* The following should be done only at AP bring up */
2303 if (!iwl_is_associated(priv)) {
2304
2305 /* RXON - unassoc (to set timing command) */
2306 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2307 iwl_commit_rxon(priv);
2308
2309 /* RXON Timing */
2310 iwl_setup_rxon_timing(priv);
2311 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2312 sizeof(priv->rxon_timing), &priv->rxon_timing);
2313 if (ret)
2314 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
2315 "Attempting to continue.\n");
2316
2317 iwl_set_rxon_chain(priv);
2318
2319 /* FIXME: what should be the assoc_id for AP? */
2320 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2321 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2322 priv->staging_rxon.flags |=
2323 RXON_FLG_SHORT_PREAMBLE_MSK;
2324 else
2325 priv->staging_rxon.flags &=
2326 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2327
2328 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2329 if (priv->assoc_capability &
2330 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2331 priv->staging_rxon.flags |=
2332 RXON_FLG_SHORT_SLOT_MSK;
2333 else
2334 priv->staging_rxon.flags &=
2335 ~RXON_FLG_SHORT_SLOT_MSK;
2336
2337 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2338 priv->staging_rxon.flags &=
2339 ~RXON_FLG_SHORT_SLOT_MSK;
2340 }
2341 /* restore RXON assoc */
2342 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2343 iwl_commit_rxon(priv);
2344 spin_lock_irqsave(&priv->lock, flags);
2345 iwl_activate_qos(priv, 1);
2346 spin_unlock_irqrestore(&priv->lock, flags);
2347 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2348 }
2349 iwl_send_beacon_cmd(priv);
2350
2351 /* FIXME - we need to add code here to detect a totally new
2352 * configuration, reset the AP, unassoc, rxon timing, assoc,
2353 * clear sta table, add BCAST sta... */
2354 }
2355
2356
2357 static int iwl_mac_config_interface(struct ieee80211_hw *hw,
2358 struct ieee80211_vif *vif,
2359 struct ieee80211_if_conf *conf)
2360 {
2361 struct iwl_priv *priv = hw->priv;
2362 int rc;
2363
2364 if (conf == NULL)
2365 return -EIO;
2366
2367 if (priv->vif != vif) {
2368 IWL_DEBUG_MAC80211(priv, "leave - priv->vif != vif\n");
2369 return 0;
2370 }
2371
2372 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2373 conf->changed & IEEE80211_IFCC_BEACON) {
2374 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2375 if (!beacon)
2376 return -ENOMEM;
2377 mutex_lock(&priv->mutex);
2378 rc = iwl_mac_beacon_update(hw, beacon);
2379 mutex_unlock(&priv->mutex);
2380 if (rc)
2381 return rc;
2382 }
2383
2384 if (!iwl_is_alive(priv))
2385 return -EAGAIN;
2386
2387 mutex_lock(&priv->mutex);
2388
2389 if (conf->bssid)
2390 IWL_DEBUG_MAC80211(priv, "bssid: %pM\n", conf->bssid);
2391
2392 /*
2393 * very dubious code was here; the probe filtering flag is never set:
2394 *
2395 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2396 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2397 */
2398
2399 if (priv->iw_mode == NL80211_IFTYPE_AP) {
2400 if (!conf->bssid) {
2401 conf->bssid = priv->mac_addr;
2402 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2403 IWL_DEBUG_MAC80211(priv, "bssid was set to: %pM\n",
2404 conf->bssid);
2405 }
2406 if (priv->ibss_beacon)
2407 dev_kfree_skb(priv->ibss_beacon);
2408
2409 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2410 }
2411
2412 if (iwl_is_rfkill(priv))
2413 goto done;
2414
2415 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2416 !is_multicast_ether_addr(conf->bssid)) {
2417 /* If there is currently a HW scan going on in the background
2418 * then we need to cancel it else the RXON below will fail. */
2419 if (iwl_scan_cancel_timeout(priv, 100)) {
2420 IWL_WARN(priv, "Aborted scan still in progress "
2421 "after 100ms\n");
2422 IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
2423 mutex_unlock(&priv->mutex);
2424 return -EAGAIN;
2425 }
2426 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2427
2428 /* TODO: Audit driver for usage of these members and see
2429 * if mac80211 deprecates them (priv->bssid looks like it
2430 * shouldn't be there, but I haven't scanned the IBSS code
2431 * to verify) - jpk */
2432 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2433
2434 if (priv->iw_mode == NL80211_IFTYPE_AP)
2435 iwl_config_ap(priv);
2436 else {
2437 rc = iwl_commit_rxon(priv);
2438 if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
2439 iwl_rxon_add_station(
2440 priv, priv->active_rxon.bssid_addr, 1);
2441 }
2442
2443 } else {
2444 iwl_scan_cancel_timeout(priv, 100);
2445 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2446 iwl_commit_rxon(priv);
2447 }
2448
2449 done:
2450 IWL_DEBUG_MAC80211(priv, "leave\n");
2451 mutex_unlock(&priv->mutex);
2452
2453 return 0;
2454 }
2455
2456 static void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2457 struct ieee80211_if_init_conf *conf)
2458 {
2459 struct iwl_priv *priv = hw->priv;
2460
2461 IWL_DEBUG_MAC80211(priv, "enter\n");
2462
2463 mutex_lock(&priv->mutex);
2464
2465 if (iwl_is_ready_rf(priv)) {
2466 iwl_scan_cancel_timeout(priv, 100);
2467 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2468 iwl_commit_rxon(priv);
2469 }
2470 if (priv->vif == conf->vif) {
2471 priv->vif = NULL;
2472 memset(priv->bssid, 0, ETH_ALEN);
2473 }
2474 mutex_unlock(&priv->mutex);
2475
2476 IWL_DEBUG_MAC80211(priv, "leave\n");
2477
2478 }
2479
2480 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2481 static void iwl_bss_info_changed(struct ieee80211_hw *hw,
2482 struct ieee80211_vif *vif,
2483 struct ieee80211_bss_conf *bss_conf,
2484 u32 changes)
2485 {
2486 struct iwl_priv *priv = hw->priv;
2487
2488 IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
2489
2490 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2491 IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
2492 bss_conf->use_short_preamble);
2493 if (bss_conf->use_short_preamble)
2494 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2495 else
2496 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2497 }
2498
2499 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2500 IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot);
2501 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2502 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2503 else
2504 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2505 }
2506
2507 if (changes & BSS_CHANGED_HT) {
2508 iwl_ht_conf(priv, bss_conf);
2509 iwl_set_rxon_chain(priv);
2510 }
2511
2512 if (changes & BSS_CHANGED_ASSOC) {
2513 IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
2514 /* This should never happen as this function should
2515 * never be called from interrupt context. */
2516 if (WARN_ON_ONCE(in_interrupt()))
2517 return;
2518 if (bss_conf->assoc) {
2519 priv->assoc_id = bss_conf->aid;
2520 priv->beacon_int = bss_conf->beacon_int;
2521 priv->power_data.dtim_period = bss_conf->dtim_period;
2522 priv->timestamp = bss_conf->timestamp;
2523 priv->assoc_capability = bss_conf->assoc_capability;
2524
2525 /* we have just associated, don't start scan too early
2526 * leave time for EAPOL exchange to complete
2527 */
2528 priv->next_scan_jiffies = jiffies +
2529 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2530 mutex_lock(&priv->mutex);
2531 iwl_post_associate(priv);
2532 mutex_unlock(&priv->mutex);
2533 } else {
2534 priv->assoc_id = 0;
2535 IWL_DEBUG_MAC80211(priv, "DISASSOC %d\n", bss_conf->assoc);
2536 }
2537 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2538 IWL_DEBUG_MAC80211(priv, "Associated Changes %d\n", changes);
2539 iwl_send_rxon_assoc(priv);
2540 }
2541
2542 }
2543
2544 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
2545 struct ieee80211_key_conf *keyconf, const u8 *addr,
2546 u32 iv32, u16 *phase1key)
2547 {
2548
2549 struct iwl_priv *priv = hw->priv;
2550 IWL_DEBUG_MAC80211(priv, "enter\n");
2551
2552 iwl_update_tkip_key(priv, keyconf, addr, iv32, phase1key);
2553
2554 IWL_DEBUG_MAC80211(priv, "leave\n");
2555 }
2556
2557 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2558 struct ieee80211_vif *vif,
2559 struct ieee80211_sta *sta,
2560 struct ieee80211_key_conf *key)
2561 {
2562 struct iwl_priv *priv = hw->priv;
2563 const u8 *addr;
2564 int ret;
2565 u8 sta_id;
2566 bool is_default_wep_key = false;
2567
2568 IWL_DEBUG_MAC80211(priv, "enter\n");
2569
2570 if (priv->hw_params.sw_crypto) {
2571 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
2572 return -EOPNOTSUPP;
2573 }
2574 addr = sta ? sta->addr : iwl_bcast_addr;
2575 sta_id = iwl_find_station(priv, addr);
2576 if (sta_id == IWL_INVALID_STATION) {
2577 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
2578 addr);
2579 return -EINVAL;
2580
2581 }
2582
2583 mutex_lock(&priv->mutex);
2584 iwl_scan_cancel_timeout(priv, 100);
2585 mutex_unlock(&priv->mutex);
2586
2587 /* If we are getting WEP group key and we didn't receive any key mapping
2588 * so far, we are in legacy wep mode (group key only), otherwise we are
2589 * in 1X mode.
2590 * In legacy wep mode, we use another host command to the uCode */
2591 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
2592 priv->iw_mode != NL80211_IFTYPE_AP) {
2593 if (cmd == SET_KEY)
2594 is_default_wep_key = !priv->key_mapping_key;
2595 else
2596 is_default_wep_key =
2597 (key->hw_key_idx == HW_KEY_DEFAULT);
2598 }
2599
2600 switch (cmd) {
2601 case SET_KEY:
2602 if (is_default_wep_key)
2603 ret = iwl_set_default_wep_key(priv, key);
2604 else
2605 ret = iwl_set_dynamic_key(priv, key, sta_id);
2606
2607 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
2608 break;
2609 case DISABLE_KEY:
2610 if (is_default_wep_key)
2611 ret = iwl_remove_default_wep_key(priv, key);
2612 else
2613 ret = iwl_remove_dynamic_key(priv, key, sta_id);
2614
2615 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
2616 break;
2617 default:
2618 ret = -EINVAL;
2619 }
2620
2621 IWL_DEBUG_MAC80211(priv, "leave\n");
2622
2623 return ret;
2624 }
2625
2626 static int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
2627 const struct ieee80211_tx_queue_params *params)
2628 {
2629 struct iwl_priv *priv = hw->priv;
2630 unsigned long flags;
2631 int q;
2632
2633 IWL_DEBUG_MAC80211(priv, "enter\n");
2634
2635 if (!iwl_is_ready_rf(priv)) {
2636 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2637 return -EIO;
2638 }
2639
2640 if (queue >= AC_NUM) {
2641 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
2642 return 0;
2643 }
2644
2645 q = AC_NUM - 1 - queue;
2646
2647 spin_lock_irqsave(&priv->lock, flags);
2648
2649 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
2650 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
2651 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
2652 priv->qos_data.def_qos_parm.ac[q].edca_txop =
2653 cpu_to_le16((params->txop * 32));
2654
2655 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
2656 priv->qos_data.qos_active = 1;
2657
2658 if (priv->iw_mode == NL80211_IFTYPE_AP)
2659 iwl_activate_qos(priv, 1);
2660 else if (priv->assoc_id && iwl_is_associated(priv))
2661 iwl_activate_qos(priv, 0);
2662
2663 spin_unlock_irqrestore(&priv->lock, flags);
2664
2665 IWL_DEBUG_MAC80211(priv, "leave\n");
2666 return 0;
2667 }
2668
2669 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
2670 enum ieee80211_ampdu_mlme_action action,
2671 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
2672 {
2673 struct iwl_priv *priv = hw->priv;
2674 int ret;
2675
2676 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
2677 sta->addr, tid);
2678
2679 if (!(priv->cfg->sku & IWL_SKU_N))
2680 return -EACCES;
2681
2682 switch (action) {
2683 case IEEE80211_AMPDU_RX_START:
2684 IWL_DEBUG_HT(priv, "start Rx\n");
2685 return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn);
2686 case IEEE80211_AMPDU_RX_STOP:
2687 IWL_DEBUG_HT(priv, "stop Rx\n");
2688 ret = iwl_sta_rx_agg_stop(priv, sta->addr, tid);
2689 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2690 return 0;
2691 else
2692 return ret;
2693 case IEEE80211_AMPDU_TX_START:
2694 IWL_DEBUG_HT(priv, "start Tx\n");
2695 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
2696 case IEEE80211_AMPDU_TX_STOP:
2697 IWL_DEBUG_HT(priv, "stop Tx\n");
2698 ret = iwl_tx_agg_stop(priv, sta->addr, tid);
2699 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2700 return 0;
2701 else
2702 return ret;
2703 default:
2704 IWL_DEBUG_HT(priv, "unknown\n");
2705 return -EINVAL;
2706 break;
2707 }
2708 return 0;
2709 }
2710
2711 static int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
2712 struct ieee80211_tx_queue_stats *stats)
2713 {
2714 struct iwl_priv *priv = hw->priv;
2715 int i, avail;
2716 struct iwl_tx_queue *txq;
2717 struct iwl_queue *q;
2718 unsigned long flags;
2719
2720 IWL_DEBUG_MAC80211(priv, "enter\n");
2721
2722 if (!iwl_is_ready_rf(priv)) {
2723 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2724 return -EIO;
2725 }
2726
2727 spin_lock_irqsave(&priv->lock, flags);
2728
2729 for (i = 0; i < AC_NUM; i++) {
2730 txq = &priv->txq[i];
2731 q = &txq->q;
2732 avail = iwl_queue_space(q);
2733
2734 stats[i].len = q->n_window - avail;
2735 stats[i].limit = q->n_window - q->high_mark;
2736 stats[i].count = q->n_window;
2737
2738 }
2739 spin_unlock_irqrestore(&priv->lock, flags);
2740
2741 IWL_DEBUG_MAC80211(priv, "leave\n");
2742
2743 return 0;
2744 }
2745
2746 static int iwl_mac_get_stats(struct ieee80211_hw *hw,
2747 struct ieee80211_low_level_stats *stats)
2748 {
2749 struct iwl_priv *priv = hw->priv;
2750
2751 priv = hw->priv;
2752 IWL_DEBUG_MAC80211(priv, "enter\n");
2753 IWL_DEBUG_MAC80211(priv, "leave\n");
2754
2755 return 0;
2756 }
2757
2758 static void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
2759 {
2760 struct iwl_priv *priv = hw->priv;
2761 unsigned long flags;
2762
2763 mutex_lock(&priv->mutex);
2764 IWL_DEBUG_MAC80211(priv, "enter\n");
2765
2766 spin_lock_irqsave(&priv->lock, flags);
2767 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
2768 spin_unlock_irqrestore(&priv->lock, flags);
2769
2770 iwl_reset_qos(priv);
2771
2772 spin_lock_irqsave(&priv->lock, flags);
2773 priv->assoc_id = 0;
2774 priv->assoc_capability = 0;
2775 priv->assoc_station_added = 0;
2776
2777 /* new association get rid of ibss beacon skb */
2778 if (priv->ibss_beacon)
2779 dev_kfree_skb(priv->ibss_beacon);
2780
2781 priv->ibss_beacon = NULL;
2782
2783 priv->beacon_int = priv->hw->conf.beacon_int;
2784 priv->timestamp = 0;
2785 if ((priv->iw_mode == NL80211_IFTYPE_STATION))
2786 priv->beacon_int = 0;
2787
2788 spin_unlock_irqrestore(&priv->lock, flags);
2789
2790 if (!iwl_is_ready_rf(priv)) {
2791 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2792 mutex_unlock(&priv->mutex);
2793 return;
2794 }
2795
2796 /* we are restarting association process
2797 * clear RXON_FILTER_ASSOC_MSK bit
2798 */
2799 if (priv->iw_mode != NL80211_IFTYPE_AP) {
2800 iwl_scan_cancel_timeout(priv, 100);
2801 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2802 iwl_commit_rxon(priv);
2803 }
2804
2805 iwl_power_update_mode(priv, 0);
2806
2807 /* Per mac80211.h: This is only used in IBSS mode... */
2808 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2809
2810 /* switch to CAM during association period.
2811 * the ucode will block any association/authentication
2812 * frome during assiciation period if it can not hear
2813 * the AP because of PM. the timer enable PM back is
2814 * association do not complete
2815 */
2816 if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
2817 IEEE80211_CHAN_RADAR))
2818 iwl_power_disable_management(priv, 3000);
2819
2820 IWL_DEBUG_MAC80211(priv, "leave - not in IBSS\n");
2821 mutex_unlock(&priv->mutex);
2822 return;
2823 }
2824
2825 iwl_set_rate(priv);
2826
2827 mutex_unlock(&priv->mutex);
2828
2829 IWL_DEBUG_MAC80211(priv, "leave\n");
2830 }
2831
2832 static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
2833 {
2834 struct iwl_priv *priv = hw->priv;
2835 unsigned long flags;
2836 __le64 timestamp;
2837
2838 IWL_DEBUG_MAC80211(priv, "enter\n");
2839
2840 if (!iwl_is_ready_rf(priv)) {
2841 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2842 return -EIO;
2843 }
2844
2845 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2846 IWL_DEBUG_MAC80211(priv, "leave - not IBSS\n");
2847 return -EIO;
2848 }
2849
2850 spin_lock_irqsave(&priv->lock, flags);
2851
2852 if (priv->ibss_beacon)
2853 dev_kfree_skb(priv->ibss_beacon);
2854
2855 priv->ibss_beacon = skb;
2856
2857 priv->assoc_id = 0;
2858 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
2859 priv->timestamp = le64_to_cpu(timestamp);
2860
2861 IWL_DEBUG_MAC80211(priv, "leave\n");
2862 spin_unlock_irqrestore(&priv->lock, flags);
2863
2864 iwl_reset_qos(priv);
2865
2866 iwl_post_associate(priv);
2867
2868
2869 return 0;
2870 }
2871
2872 /*****************************************************************************
2873 *
2874 * sysfs attributes
2875 *
2876 *****************************************************************************/
2877
2878 #ifdef CONFIG_IWLWIFI_DEBUG
2879
2880 /*
2881 * The following adds a new attribute to the sysfs representation
2882 * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
2883 * used for controlling the debug level.
2884 *
2885 * See the level definitions in iwl for details.
2886 */
2887
2888 static ssize_t show_debug_level(struct device *d,
2889 struct device_attribute *attr, char *buf)
2890 {
2891 struct iwl_priv *priv = d->driver_data;
2892
2893 return sprintf(buf, "0x%08X\n", priv->debug_level);
2894 }
2895 static ssize_t store_debug_level(struct device *d,
2896 struct device_attribute *attr,
2897 const char *buf, size_t count)
2898 {
2899 struct iwl_priv *priv = d->driver_data;
2900 unsigned long val;
2901 int ret;
2902
2903 ret = strict_strtoul(buf, 0, &val);
2904 if (ret)
2905 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
2906 else
2907 priv->debug_level = val;
2908
2909 return strnlen(buf, count);
2910 }
2911
2912 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
2913 show_debug_level, store_debug_level);
2914
2915
2916 #endif /* CONFIG_IWLWIFI_DEBUG */
2917
2918
2919 static ssize_t show_version(struct device *d,
2920 struct device_attribute *attr, char *buf)
2921 {
2922 struct iwl_priv *priv = d->driver_data;
2923 struct iwl_alive_resp *palive = &priv->card_alive;
2924 ssize_t pos = 0;
2925 u16 eeprom_ver;
2926
2927 if (palive->is_valid)
2928 pos += sprintf(buf + pos,
2929 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
2930 "fw type: 0x%01X 0x%01X\n",
2931 palive->ucode_major, palive->ucode_minor,
2932 palive->sw_rev[0], palive->sw_rev[1],
2933 palive->ver_type, palive->ver_subtype);
2934 else
2935 pos += sprintf(buf + pos, "fw not loaded\n");
2936
2937 if (priv->eeprom) {
2938 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
2939 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
2940 eeprom_ver);
2941 } else {
2942 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
2943 }
2944
2945 return pos;
2946 }
2947
2948 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
2949
2950 static ssize_t show_temperature(struct device *d,
2951 struct device_attribute *attr, char *buf)
2952 {
2953 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
2954
2955 if (!iwl_is_alive(priv))
2956 return -EAGAIN;
2957
2958 return sprintf(buf, "%d\n", priv->temperature);
2959 }
2960
2961 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
2962
2963 static ssize_t show_tx_power(struct device *d,
2964 struct device_attribute *attr, char *buf)
2965 {
2966 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
2967
2968 if (!iwl_is_ready_rf(priv))
2969 return sprintf(buf, "off\n");
2970 else
2971 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
2972 }
2973
2974 static ssize_t store_tx_power(struct device *d,
2975 struct device_attribute *attr,
2976 const char *buf, size_t count)
2977 {
2978 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
2979 unsigned long val;
2980 int ret;
2981
2982 ret = strict_strtoul(buf, 10, &val);
2983 if (ret)
2984 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
2985 else
2986 iwl_set_tx_power(priv, val, false);
2987
2988 return count;
2989 }
2990
2991 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
2992
2993 static ssize_t show_flags(struct device *d,
2994 struct device_attribute *attr, char *buf)
2995 {
2996 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
2997
2998 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
2999 }
3000
3001 static ssize_t store_flags(struct device *d,
3002 struct device_attribute *attr,
3003 const char *buf, size_t count)
3004 {
3005 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3006 unsigned long val;
3007 u32 flags;
3008 int ret = strict_strtoul(buf, 0, &val);
3009 if (ret)
3010 return ret;
3011 flags = (u32)val;
3012
3013 mutex_lock(&priv->mutex);
3014 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3015 /* Cancel any currently running scans... */
3016 if (iwl_scan_cancel_timeout(priv, 100))
3017 IWL_WARN(priv, "Could not cancel scan.\n");
3018 else {
3019 IWL_DEBUG_INFO(priv, "Commit rxon.flags = 0x%04X\n", flags);
3020 priv->staging_rxon.flags = cpu_to_le32(flags);
3021 iwl_commit_rxon(priv);
3022 }
3023 }
3024 mutex_unlock(&priv->mutex);
3025
3026 return count;
3027 }
3028
3029 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3030
3031 static ssize_t show_filter_flags(struct device *d,
3032 struct device_attribute *attr, char *buf)
3033 {
3034 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3035
3036 return sprintf(buf, "0x%04X\n",
3037 le32_to_cpu(priv->active_rxon.filter_flags));
3038 }
3039
3040 static ssize_t store_filter_flags(struct device *d,
3041 struct device_attribute *attr,
3042 const char *buf, size_t count)
3043 {
3044 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3045 unsigned long val;
3046 u32 filter_flags;
3047 int ret = strict_strtoul(buf, 0, &val);
3048 if (ret)
3049 return ret;
3050 filter_flags = (u32)val;
3051
3052 mutex_lock(&priv->mutex);
3053 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3054 /* Cancel any currently running scans... */
3055 if (iwl_scan_cancel_timeout(priv, 100))
3056 IWL_WARN(priv, "Could not cancel scan.\n");
3057 else {
3058 IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
3059 "0x%04X\n", filter_flags);
3060 priv->staging_rxon.filter_flags =
3061 cpu_to_le32(filter_flags);
3062 iwl_commit_rxon(priv);
3063 }
3064 }
3065 mutex_unlock(&priv->mutex);
3066
3067 return count;
3068 }
3069
3070 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3071 store_filter_flags);
3072
3073 static ssize_t store_power_level(struct device *d,
3074 struct device_attribute *attr,
3075 const char *buf, size_t count)
3076 {
3077 struct iwl_priv *priv = dev_get_drvdata(d);
3078 int ret;
3079 unsigned long mode;
3080
3081
3082 mutex_lock(&priv->mutex);
3083
3084 ret = strict_strtoul(buf, 10, &mode);
3085 if (ret)
3086 goto out;
3087
3088 ret = iwl_power_set_user_mode(priv, mode);
3089 if (ret) {
3090 IWL_DEBUG_MAC80211(priv, "failed setting power mode.\n");
3091 goto out;
3092 }
3093 ret = count;
3094
3095 out:
3096 mutex_unlock(&priv->mutex);
3097 return ret;
3098 }
3099
3100 static ssize_t show_power_level(struct device *d,
3101 struct device_attribute *attr, char *buf)
3102 {
3103 struct iwl_priv *priv = dev_get_drvdata(d);
3104 int mode = priv->power_data.user_power_setting;
3105 int system = priv->power_data.system_power_setting;
3106 int level = priv->power_data.power_mode;
3107 char *p = buf;
3108
3109 switch (system) {
3110 case IWL_POWER_SYS_AUTO:
3111 p += sprintf(p, "SYSTEM:auto");
3112 break;
3113 case IWL_POWER_SYS_AC:
3114 p += sprintf(p, "SYSTEM:ac");
3115 break;
3116 case IWL_POWER_SYS_BATTERY:
3117 p += sprintf(p, "SYSTEM:battery");
3118 break;
3119 }
3120
3121 p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO) ?
3122 "fixed" : "auto");
3123 p += sprintf(p, "\tINDEX:%d", level);
3124 p += sprintf(p, "\n");
3125 return p - buf + 1;
3126 }
3127
3128 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3129 store_power_level);
3130
3131
3132 static ssize_t show_statistics(struct device *d,
3133 struct device_attribute *attr, char *buf)
3134 {
3135 struct iwl_priv *priv = dev_get_drvdata(d);
3136 u32 size = sizeof(struct iwl_notif_statistics);
3137 u32 len = 0, ofs = 0;
3138 u8 *data = (u8 *)&priv->statistics;
3139 int rc = 0;
3140
3141 if (!iwl_is_alive(priv))
3142 return -EAGAIN;
3143
3144 mutex_lock(&priv->mutex);
3145 rc = iwl_send_statistics_request(priv, 0);
3146 mutex_unlock(&priv->mutex);
3147
3148 if (rc) {
3149 len = sprintf(buf,
3150 "Error sending statistics request: 0x%08X\n", rc);
3151 return len;
3152 }
3153
3154 while (size && (PAGE_SIZE - len)) {
3155 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3156 PAGE_SIZE - len, 1);
3157 len = strlen(buf);
3158 if (PAGE_SIZE - len)
3159 buf[len++] = '\n';
3160
3161 ofs += 16;
3162 size -= min(size, 16U);
3163 }
3164
3165 return len;
3166 }
3167
3168 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3169
3170
3171 /*****************************************************************************
3172 *
3173 * driver setup and teardown
3174 *
3175 *****************************************************************************/
3176
3177 static void iwl_setup_deferred_work(struct iwl_priv *priv)
3178 {
3179 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3180
3181 init_waitqueue_head(&priv->wait_command_queue);
3182
3183 INIT_WORK(&priv->up, iwl_bg_up);
3184 INIT_WORK(&priv->restart, iwl_bg_restart);
3185 INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
3186 INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
3187 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
3188 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
3189 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
3190 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
3191
3192 iwl_setup_scan_deferred_work(priv);
3193 iwl_setup_power_deferred_work(priv);
3194
3195 if (priv->cfg->ops->lib->setup_deferred_work)
3196 priv->cfg->ops->lib->setup_deferred_work(priv);
3197
3198 init_timer(&priv->statistics_periodic);
3199 priv->statistics_periodic.data = (unsigned long)priv;
3200 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3201
3202 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3203 iwl_irq_tasklet, (unsigned long)priv);
3204 }
3205
3206 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3207 {
3208 if (priv->cfg->ops->lib->cancel_deferred_work)
3209 priv->cfg->ops->lib->cancel_deferred_work(priv);
3210
3211 cancel_delayed_work_sync(&priv->init_alive_start);
3212 cancel_delayed_work(&priv->scan_check);
3213 cancel_delayed_work_sync(&priv->set_power_save);
3214 cancel_delayed_work(&priv->alive_start);
3215 cancel_work_sync(&priv->beacon_update);
3216 del_timer_sync(&priv->statistics_periodic);
3217 }
3218
3219 static struct attribute *iwl_sysfs_entries[] = {
3220 &dev_attr_flags.attr,
3221 &dev_attr_filter_flags.attr,
3222 &dev_attr_power_level.attr,
3223 &dev_attr_statistics.attr,
3224 &dev_attr_temperature.attr,
3225 &dev_attr_tx_power.attr,
3226 #ifdef CONFIG_IWLWIFI_DEBUG
3227 &dev_attr_debug_level.attr,
3228 #endif
3229 &dev_attr_version.attr,
3230
3231 NULL
3232 };
3233
3234 static struct attribute_group iwl_attribute_group = {
3235 .name = NULL, /* put in device directory */
3236 .attrs = iwl_sysfs_entries,
3237 };
3238
3239 static struct ieee80211_ops iwl_hw_ops = {
3240 .tx = iwl_mac_tx,
3241 .start = iwl_mac_start,
3242 .stop = iwl_mac_stop,
3243 .add_interface = iwl_mac_add_interface,
3244 .remove_interface = iwl_mac_remove_interface,
3245 .config = iwl_mac_config,
3246 .config_interface = iwl_mac_config_interface,
3247 .configure_filter = iwl_configure_filter,
3248 .set_key = iwl_mac_set_key,
3249 .update_tkip_key = iwl_mac_update_tkip_key,
3250 .get_stats = iwl_mac_get_stats,
3251 .get_tx_stats = iwl_mac_get_tx_stats,
3252 .conf_tx = iwl_mac_conf_tx,
3253 .reset_tsf = iwl_mac_reset_tsf,
3254 .bss_info_changed = iwl_bss_info_changed,
3255 .ampdu_action = iwl_mac_ampdu_action,
3256 .hw_scan = iwl_mac_hw_scan
3257 };
3258
3259 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3260 {
3261 int err = 0;
3262 struct iwl_priv *priv;
3263 struct ieee80211_hw *hw;
3264 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3265 unsigned long flags;
3266 u16 pci_cmd;
3267
3268 /************************
3269 * 1. Allocating HW data
3270 ************************/
3271
3272 /* Disabling hardware scan means that mac80211 will perform scans
3273 * "the hard way", rather than using device's scan. */
3274 if (cfg->mod_params->disable_hw_scan) {
3275 if (cfg->mod_params->debug & IWL_DL_INFO)
3276 dev_printk(KERN_DEBUG, &(pdev->dev),
3277 "Disabling hw_scan\n");
3278 iwl_hw_ops.hw_scan = NULL;
3279 }
3280
3281 hw = iwl_alloc_all(cfg, &iwl_hw_ops);
3282 if (!hw) {
3283 err = -ENOMEM;
3284 goto out;
3285 }
3286 priv = hw->priv;
3287 /* At this point both hw and priv are allocated. */
3288
3289 SET_IEEE80211_DEV(hw, &pdev->dev);
3290
3291 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3292 priv->cfg = cfg;
3293 priv->pci_dev = pdev;
3294
3295 #ifdef CONFIG_IWLWIFI_DEBUG
3296 priv->debug_level = priv->cfg->mod_params->debug;
3297 atomic_set(&priv->restrict_refcnt, 0);
3298 #endif
3299
3300 /**************************
3301 * 2. Initializing PCI bus
3302 **************************/
3303 if (pci_enable_device(pdev)) {
3304 err = -ENODEV;
3305 goto out_ieee80211_free_hw;
3306 }
3307
3308 pci_set_master(pdev);
3309
3310 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
3311 if (!err)
3312 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
3313 if (err) {
3314 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3315 if (!err)
3316 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3317 /* both attempts failed: */
3318 if (err) {
3319 IWL_WARN(priv, "No suitable DMA available.\n");
3320 goto out_pci_disable_device;
3321 }
3322 }
3323
3324 err = pci_request_regions(pdev, DRV_NAME);
3325 if (err)
3326 goto out_pci_disable_device;
3327
3328 pci_set_drvdata(pdev, priv);
3329
3330
3331 /***********************
3332 * 3. Read REV register
3333 ***********************/
3334 priv->hw_base = pci_iomap(pdev, 0, 0);
3335 if (!priv->hw_base) {
3336 err = -ENODEV;
3337 goto out_pci_release_regions;
3338 }
3339
3340 IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
3341 (unsigned long long) pci_resource_len(pdev, 0));
3342 IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
3343
3344 iwl_hw_detect(priv);
3345 IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s REV=0x%X\n",
3346 priv->cfg->name, priv->hw_rev);
3347
3348 /* We disable the RETRY_TIMEOUT register (0x41) to keep
3349 * PCI Tx retries from interfering with C3 CPU state */
3350 pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
3351
3352 /* amp init */
3353 err = priv->cfg->ops->lib->apm_ops.init(priv);
3354 if (err < 0) {
3355 IWL_ERR(priv, "Failed to init APMG\n");
3356 goto out_iounmap;
3357 }
3358 /*****************
3359 * 4. Read EEPROM
3360 *****************/
3361 /* Read the EEPROM */
3362 err = iwl_eeprom_init(priv);
3363 if (err) {
3364 IWL_ERR(priv, "Unable to init EEPROM\n");
3365 goto out_iounmap;
3366 }
3367 err = iwl_eeprom_check_version(priv);
3368 if (err)
3369 goto out_free_eeprom;
3370
3371 /* extract MAC Address */
3372 iwl_eeprom_get_mac(priv, priv->mac_addr);
3373 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
3374 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
3375
3376 /************************
3377 * 5. Setup HW constants
3378 ************************/
3379 if (iwl_set_hw_params(priv)) {
3380 IWL_ERR(priv, "failed to set hw parameters\n");
3381 goto out_free_eeprom;
3382 }
3383
3384 /*******************
3385 * 6. Setup priv
3386 *******************/
3387
3388 err = iwl_init_drv(priv);
3389 if (err)
3390 goto out_free_eeprom;
3391 /* At this point both hw and priv are initialized. */
3392
3393 /**********************************
3394 * 7. Initialize module parameters
3395 **********************************/
3396
3397 /* Disable radio (SW RF KILL) via parameter when loading driver */
3398 if (priv->cfg->mod_params->disable) {
3399 set_bit(STATUS_RF_KILL_SW, &priv->status);
3400 IWL_DEBUG_INFO(priv, "Radio disabled.\n");
3401 }
3402
3403 /********************
3404 * 8. Setup services
3405 ********************/
3406 spin_lock_irqsave(&priv->lock, flags);
3407 iwl_disable_interrupts(priv);
3408 spin_unlock_irqrestore(&priv->lock, flags);
3409
3410 pci_enable_msi(priv->pci_dev);
3411
3412 err = request_irq(priv->pci_dev->irq, iwl_isr, IRQF_SHARED,
3413 DRV_NAME, priv);
3414 if (err) {
3415 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
3416 goto out_disable_msi;
3417 }
3418 err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
3419 if (err) {
3420 IWL_ERR(priv, "failed to create sysfs device attributes\n");
3421 goto out_free_irq;
3422 }
3423
3424 iwl_setup_deferred_work(priv);
3425 iwl_setup_rx_handlers(priv);
3426
3427 /**********************************
3428 * 9. Setup and register mac80211
3429 **********************************/
3430
3431 /* enable interrupts if needed: hw bug w/a */
3432 pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
3433 if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
3434 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
3435 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
3436 }
3437
3438 iwl_enable_interrupts(priv);
3439
3440 err = iwl_setup_mac(priv);
3441 if (err)
3442 goto out_remove_sysfs;
3443
3444 err = iwl_dbgfs_register(priv, DRV_NAME);
3445 if (err)
3446 IWL_ERR(priv, "failed to create debugfs files\n");
3447
3448 /* If platform's RF_KILL switch is NOT set to KILL */
3449 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3450 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3451 else
3452 set_bit(STATUS_RF_KILL_HW, &priv->status);
3453
3454 err = iwl_rfkill_init(priv);
3455 if (err)
3456 IWL_ERR(priv, "Unable to initialize RFKILL system. "
3457 "Ignoring error: %d\n", err);
3458 else
3459 iwl_rfkill_set_hw_state(priv);
3460
3461 iwl_power_initialize(priv);
3462 return 0;
3463
3464 out_remove_sysfs:
3465 destroy_workqueue(priv->workqueue);
3466 priv->workqueue = NULL;
3467 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3468 out_free_irq:
3469 free_irq(priv->pci_dev->irq, priv);
3470 out_disable_msi:
3471 pci_disable_msi(priv->pci_dev);
3472 iwl_uninit_drv(priv);
3473 out_free_eeprom:
3474 iwl_eeprom_free(priv);
3475 out_iounmap:
3476 pci_iounmap(pdev, priv->hw_base);
3477 out_pci_release_regions:
3478 pci_set_drvdata(pdev, NULL);
3479 pci_release_regions(pdev);
3480 out_pci_disable_device:
3481 pci_disable_device(pdev);
3482 out_ieee80211_free_hw:
3483 ieee80211_free_hw(priv->hw);
3484 out:
3485 return err;
3486 }
3487
3488 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
3489 {
3490 struct iwl_priv *priv = pci_get_drvdata(pdev);
3491 unsigned long flags;
3492
3493 if (!priv)
3494 return;
3495
3496 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
3497
3498 iwl_dbgfs_unregister(priv);
3499 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3500
3501 /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3502 * to be called and iwl_down since we are removing the device
3503 * we need to set STATUS_EXIT_PENDING bit.
3504 */
3505 set_bit(STATUS_EXIT_PENDING, &priv->status);
3506 if (priv->mac80211_registered) {
3507 ieee80211_unregister_hw(priv->hw);
3508 priv->mac80211_registered = 0;
3509 } else {
3510 iwl_down(priv);
3511 }
3512
3513 /* make sure we flush any pending irq or
3514 * tasklet for the driver
3515 */
3516 spin_lock_irqsave(&priv->lock, flags);
3517 iwl_disable_interrupts(priv);
3518 spin_unlock_irqrestore(&priv->lock, flags);
3519
3520 iwl_synchronize_irq(priv);
3521
3522 iwl_rfkill_unregister(priv);
3523 iwl_dealloc_ucode_pci(priv);
3524
3525 if (priv->rxq.bd)
3526 iwl_rx_queue_free(priv, &priv->rxq);
3527 iwl_hw_txq_ctx_free(priv);
3528
3529 iwl_clear_stations_table(priv);
3530 iwl_eeprom_free(priv);
3531
3532
3533 /*netif_stop_queue(dev); */
3534 flush_workqueue(priv->workqueue);
3535
3536 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3537 * priv->workqueue... so we can't take down the workqueue
3538 * until now... */
3539 destroy_workqueue(priv->workqueue);
3540 priv->workqueue = NULL;
3541
3542 free_irq(priv->pci_dev->irq, priv);
3543 pci_disable_msi(priv->pci_dev);
3544 pci_iounmap(pdev, priv->hw_base);
3545 pci_release_regions(pdev);
3546 pci_disable_device(pdev);
3547 pci_set_drvdata(pdev, NULL);
3548
3549 iwl_uninit_drv(priv);
3550
3551 if (priv->ibss_beacon)
3552 dev_kfree_skb(priv->ibss_beacon);
3553
3554 ieee80211_free_hw(priv->hw);
3555 }
3556
3557 #ifdef CONFIG_PM
3558
3559 static int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
3560 {
3561 struct iwl_priv *priv = pci_get_drvdata(pdev);
3562
3563 if (priv->is_open) {
3564 set_bit(STATUS_IN_SUSPEND, &priv->status);
3565 iwl_mac_stop(priv->hw);
3566 priv->is_open = 1;
3567 }
3568
3569 pci_save_state(pdev);
3570 pci_disable_device(pdev);
3571 pci_set_power_state(pdev, PCI_D3hot);
3572
3573 return 0;
3574 }
3575
3576 static int iwl_pci_resume(struct pci_dev *pdev)
3577 {
3578 struct iwl_priv *priv = pci_get_drvdata(pdev);
3579 int ret;
3580
3581 pci_set_power_state(pdev, PCI_D0);
3582 ret = pci_enable_device(pdev);
3583 if (ret)
3584 return ret;
3585 pci_restore_state(pdev);
3586 iwl_enable_interrupts(priv);
3587
3588 if (priv->is_open)
3589 iwl_mac_start(priv->hw);
3590
3591 clear_bit(STATUS_IN_SUSPEND, &priv->status);
3592 return 0;
3593 }
3594
3595 #endif /* CONFIG_PM */
3596
3597 /*****************************************************************************
3598 *
3599 * driver and module entry point
3600 *
3601 *****************************************************************************/
3602
3603 /* Hardware specific file defines the PCI IDs table for that hardware module */
3604 static struct pci_device_id iwl_hw_card_ids[] = {
3605 #ifdef CONFIG_IWL4965
3606 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
3607 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
3608 #endif /* CONFIG_IWL4965 */
3609 #ifdef CONFIG_IWL5000
3610 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
3611 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
3612 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
3613 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
3614 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
3615 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
3616 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
3617 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
3618 {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
3619 {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
3620 /* 5350 WiFi/WiMax */
3621 {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
3622 {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
3623 {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
3624 /* 5150 Wifi/WiMax */
3625 {IWL_PCI_DEVICE(0x423C, PCI_ANY_ID, iwl5150_agn_cfg)},
3626 {IWL_PCI_DEVICE(0x423D, PCI_ANY_ID, iwl5150_agn_cfg)},
3627 /* 6000/6050 Series */
3628 {IWL_PCI_DEVICE(0x0082, 0x1102, iwl6000_2ag_cfg)},
3629 {IWL_PCI_DEVICE(0x0085, 0x1112, iwl6000_2ag_cfg)},
3630 {IWL_PCI_DEVICE(0x0082, 0x1122, iwl6000_2ag_cfg)},
3631 {IWL_PCI_DEVICE(0x422B, PCI_ANY_ID, iwl6000_3agn_cfg)},
3632 {IWL_PCI_DEVICE(0x422C, PCI_ANY_ID, iwl6000_2agn_cfg)},
3633 {IWL_PCI_DEVICE(0x4238, PCI_ANY_ID, iwl6000_3agn_cfg)},
3634 {IWL_PCI_DEVICE(0x4239, PCI_ANY_ID, iwl6000_2agn_cfg)},
3635 {IWL_PCI_DEVICE(0x0082, PCI_ANY_ID, iwl6000_2agn_cfg)},
3636 {IWL_PCI_DEVICE(0x0085, PCI_ANY_ID, iwl6000_3agn_cfg)},
3637 {IWL_PCI_DEVICE(0x0086, PCI_ANY_ID, iwl6050_3agn_cfg)},
3638 {IWL_PCI_DEVICE(0x0087, PCI_ANY_ID, iwl6050_2agn_cfg)},
3639 {IWL_PCI_DEVICE(0x0088, PCI_ANY_ID, iwl6050_3agn_cfg)},
3640 {IWL_PCI_DEVICE(0x0089, PCI_ANY_ID, iwl6050_2agn_cfg)},
3641 /* 1000 Series WiFi */
3642 {IWL_PCI_DEVICE(0x0083, PCI_ANY_ID, iwl1000_bgn_cfg)},
3643 {IWL_PCI_DEVICE(0x0084, PCI_ANY_ID, iwl1000_bgn_cfg)},
3644 #endif /* CONFIG_IWL5000 */
3645
3646 {0}
3647 };
3648 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
3649
3650 static struct pci_driver iwl_driver = {
3651 .name = DRV_NAME,
3652 .id_table = iwl_hw_card_ids,
3653 .probe = iwl_pci_probe,
3654 .remove = __devexit_p(iwl_pci_remove),
3655 #ifdef CONFIG_PM
3656 .suspend = iwl_pci_suspend,
3657 .resume = iwl_pci_resume,
3658 #endif
3659 };
3660
3661 static int __init iwl_init(void)
3662 {
3663
3664 int ret;
3665 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
3666 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
3667
3668 ret = iwlagn_rate_control_register();
3669 if (ret) {
3670 printk(KERN_ERR DRV_NAME
3671 "Unable to register rate control algorithm: %d\n", ret);
3672 return ret;
3673 }
3674
3675 ret = pci_register_driver(&iwl_driver);
3676 if (ret) {
3677 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
3678 goto error_register;
3679 }
3680
3681 return ret;
3682
3683 error_register:
3684 iwlagn_rate_control_unregister();
3685 return ret;
3686 }
3687
3688 static void __exit iwl_exit(void)
3689 {
3690 pci_unregister_driver(&iwl_driver);
3691 iwlagn_rate_control_unregister();
3692 }
3693
3694 module_exit(iwl_exit);
3695 module_init(iwl_init);
Linux kernel - Deliverables
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