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Merge git://git.infradead.org/mtd-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 cancel_delayed_work(&priv->scan_check);
673 if (iwl_scan_cancel_timeout(priv, 100)) {
674 IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
675 IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
676 return -EAGAIN;
677 }
678
679 iwl_commit_rxon(priv);
680
681 return 0;
682 }
683
684 /******************************************************************************
685 *
686 * Generic RX handler implementations
687 *
688 ******************************************************************************/
689 static void iwl_rx_reply_alive(struct iwl_priv *priv,
690 struct iwl_rx_mem_buffer *rxb)
691 {
692 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
693 struct iwl_alive_resp *palive;
694 struct delayed_work *pwork;
695
696 palive = &pkt->u.alive_frame;
697
698 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
699 "0x%01X 0x%01X\n",
700 palive->is_valid, palive->ver_type,
701 palive->ver_subtype);
702
703 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
704 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
705 memcpy(&priv->card_alive_init,
706 &pkt->u.alive_frame,
707 sizeof(struct iwl_init_alive_resp));
708 pwork = &priv->init_alive_start;
709 } else {
710 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
711 memcpy(&priv->card_alive, &pkt->u.alive_frame,
712 sizeof(struct iwl_alive_resp));
713 pwork = &priv->alive_start;
714 }
715
716 /* We delay the ALIVE response by 5ms to
717 * give the HW RF Kill time to activate... */
718 if (palive->is_valid == UCODE_VALID_OK)
719 queue_delayed_work(priv->workqueue, pwork,
720 msecs_to_jiffies(5));
721 else
722 IWL_WARN(priv, "uCode did not respond OK.\n");
723 }
724
725 static void iwl_bg_beacon_update(struct work_struct *work)
726 {
727 struct iwl_priv *priv =
728 container_of(work, struct iwl_priv, beacon_update);
729 struct sk_buff *beacon;
730
731 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
732 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
733
734 if (!beacon) {
735 IWL_ERR(priv, "update beacon failed\n");
736 return;
737 }
738
739 mutex_lock(&priv->mutex);
740 /* new beacon skb is allocated every time; dispose previous.*/
741 if (priv->ibss_beacon)
742 dev_kfree_skb(priv->ibss_beacon);
743
744 priv->ibss_beacon = beacon;
745 mutex_unlock(&priv->mutex);
746
747 iwl_send_beacon_cmd(priv);
748 }
749
750 /**
751 * iwl_bg_statistics_periodic - Timer callback to queue statistics
752 *
753 * This callback is provided in order to send a statistics request.
754 *
755 * This timer function is continually reset to execute within
756 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
757 * was received. We need to ensure we receive the statistics in order
758 * to update the temperature used for calibrating the TXPOWER.
759 */
760 static void iwl_bg_statistics_periodic(unsigned long data)
761 {
762 struct iwl_priv *priv = (struct iwl_priv *)data;
763
764 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
765 return;
766
767 /* dont send host command if rf-kill is on */
768 if (!iwl_is_ready_rf(priv))
769 return;
770
771 iwl_send_statistics_request(priv, CMD_ASYNC);
772 }
773
774 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
775 struct iwl_rx_mem_buffer *rxb)
776 {
777 #ifdef CONFIG_IWLWIFI_DEBUG
778 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
779 struct iwl4965_beacon_notif *beacon =
780 (struct iwl4965_beacon_notif *)pkt->u.raw;
781 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
782
783 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
784 "tsf %d %d rate %d\n",
785 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
786 beacon->beacon_notify_hdr.failure_frame,
787 le32_to_cpu(beacon->ibss_mgr_status),
788 le32_to_cpu(beacon->high_tsf),
789 le32_to_cpu(beacon->low_tsf), rate);
790 #endif
791
792 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
793 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
794 queue_work(priv->workqueue, &priv->beacon_update);
795 }
796
797 /* Handle notification from uCode that card's power state is changing
798 * due to software, hardware, or critical temperature RFKILL */
799 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
800 struct iwl_rx_mem_buffer *rxb)
801 {
802 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
803 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
804 unsigned long status = priv->status;
805
806 IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s\n",
807 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
808 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
809
810 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
811 RF_CARD_DISABLED)) {
812
813 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
814 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
815
816 if (!iwl_grab_nic_access(priv)) {
817 iwl_write_direct32(
818 priv, HBUS_TARG_MBX_C,
819 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
820
821 iwl_release_nic_access(priv);
822 }
823
824 if (!(flags & RXON_CARD_DISABLED)) {
825 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
826 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
827 if (!iwl_grab_nic_access(priv)) {
828 iwl_write_direct32(
829 priv, HBUS_TARG_MBX_C,
830 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
831
832 iwl_release_nic_access(priv);
833 }
834 }
835
836 if (flags & RF_CARD_DISABLED) {
837 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
838 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
839 iwl_read32(priv, CSR_UCODE_DRV_GP1);
840 if (!iwl_grab_nic_access(priv))
841 iwl_release_nic_access(priv);
842 }
843 }
844
845 if (flags & HW_CARD_DISABLED)
846 set_bit(STATUS_RF_KILL_HW, &priv->status);
847 else
848 clear_bit(STATUS_RF_KILL_HW, &priv->status);
849
850
851 if (flags & SW_CARD_DISABLED)
852 set_bit(STATUS_RF_KILL_SW, &priv->status);
853 else
854 clear_bit(STATUS_RF_KILL_SW, &priv->status);
855
856 if (!(flags & RXON_CARD_DISABLED))
857 iwl_scan_cancel(priv);
858
859 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
860 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
861 (test_bit(STATUS_RF_KILL_SW, &status) !=
862 test_bit(STATUS_RF_KILL_SW, &priv->status)))
863 queue_work(priv->workqueue, &priv->rf_kill);
864 else
865 wake_up_interruptible(&priv->wait_command_queue);
866 }
867
868 int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
869 {
870 int ret;
871 unsigned long flags;
872
873 spin_lock_irqsave(&priv->lock, flags);
874 ret = iwl_grab_nic_access(priv);
875 if (ret)
876 goto err;
877
878 if (src == IWL_PWR_SRC_VAUX) {
879 if (pci_pme_capable(priv->pci_dev, PCI_D3cold))
880 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
881 APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
882 ~APMG_PS_CTRL_MSK_PWR_SRC);
883 } else {
884 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
885 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
886 ~APMG_PS_CTRL_MSK_PWR_SRC);
887 }
888
889 iwl_release_nic_access(priv);
890 err:
891 spin_unlock_irqrestore(&priv->lock, flags);
892 return ret;
893 }
894
895 /**
896 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
897 *
898 * Setup the RX handlers for each of the reply types sent from the uCode
899 * to the host.
900 *
901 * This function chains into the hardware specific files for them to setup
902 * any hardware specific handlers as well.
903 */
904 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
905 {
906 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
907 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
908 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
909 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
910 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
911 iwl_rx_pm_debug_statistics_notif;
912 priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
913
914 /*
915 * The same handler is used for both the REPLY to a discrete
916 * statistics request from the host as well as for the periodic
917 * statistics notifications (after received beacons) from the uCode.
918 */
919 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
920 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
921
922 iwl_setup_spectrum_handlers(priv);
923 iwl_setup_rx_scan_handlers(priv);
924
925 /* status change handler */
926 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
927
928 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
929 iwl_rx_missed_beacon_notif;
930 /* Rx handlers */
931 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
932 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
933 /* block ack */
934 priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
935 /* Set up hardware specific Rx handlers */
936 priv->cfg->ops->lib->rx_handler_setup(priv);
937 }
938
939 /**
940 * iwl_rx_handle - Main entry function for receiving responses from uCode
941 *
942 * Uses the priv->rx_handlers callback function array to invoke
943 * the appropriate handlers, including command responses,
944 * frame-received notifications, and other notifications.
945 */
946 void iwl_rx_handle(struct iwl_priv *priv)
947 {
948 struct iwl_rx_mem_buffer *rxb;
949 struct iwl_rx_packet *pkt;
950 struct iwl_rx_queue *rxq = &priv->rxq;
951 u32 r, i;
952 int reclaim;
953 unsigned long flags;
954 u8 fill_rx = 0;
955 u32 count = 8;
956
957 /* uCode's read index (stored in shared DRAM) indicates the last Rx
958 * buffer that the driver may process (last buffer filled by ucode). */
959 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
960 i = rxq->read;
961
962 /* Rx interrupt, but nothing sent from uCode */
963 if (i == r)
964 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
965
966 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
967 fill_rx = 1;
968
969 while (i != r) {
970 rxb = rxq->queue[i];
971
972 /* If an RXB doesn't have a Rx queue slot associated with it,
973 * then a bug has been introduced in the queue refilling
974 * routines -- catch it here */
975 BUG_ON(rxb == NULL);
976
977 rxq->queue[i] = NULL;
978
979 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
980 priv->hw_params.rx_buf_size + 256,
981 PCI_DMA_FROMDEVICE);
982 pkt = (struct iwl_rx_packet *)rxb->skb->data;
983
984 /* Reclaim a command buffer only if this packet is a response
985 * to a (driver-originated) command.
986 * If the packet (e.g. Rx frame) originated from uCode,
987 * there is no command buffer to reclaim.
988 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
989 * but apparently a few don't get set; catch them here. */
990 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
991 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
992 (pkt->hdr.cmd != REPLY_RX) &&
993 (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
994 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
995 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
996 (pkt->hdr.cmd != REPLY_TX);
997
998 /* Based on type of command response or notification,
999 * handle those that need handling via function in
1000 * rx_handlers table. See iwl_setup_rx_handlers() */
1001 if (priv->rx_handlers[pkt->hdr.cmd]) {
1002 IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r,
1003 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1004 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1005 } else {
1006 /* No handling needed */
1007 IWL_DEBUG_RX(priv,
1008 "r %d i %d No handler needed for %s, 0x%02x\n",
1009 r, i, get_cmd_string(pkt->hdr.cmd),
1010 pkt->hdr.cmd);
1011 }
1012
1013 if (reclaim) {
1014 /* Invoke any callbacks, transfer the skb to caller, and
1015 * fire off the (possibly) blocking iwl_send_cmd()
1016 * as we reclaim the driver command queue */
1017 if (rxb && rxb->skb)
1018 iwl_tx_cmd_complete(priv, rxb);
1019 else
1020 IWL_WARN(priv, "Claim null rxb?\n");
1021 }
1022
1023 /* For now we just don't re-use anything. We can tweak this
1024 * later to try and re-use notification packets and SKBs that
1025 * fail to Rx correctly */
1026 if (rxb->skb != NULL) {
1027 priv->alloc_rxb_skb--;
1028 dev_kfree_skb_any(rxb->skb);
1029 rxb->skb = NULL;
1030 }
1031
1032 spin_lock_irqsave(&rxq->lock, flags);
1033 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1034 spin_unlock_irqrestore(&rxq->lock, flags);
1035 i = (i + 1) & RX_QUEUE_MASK;
1036 /* If there are a lot of unused frames,
1037 * restock the Rx queue so ucode wont assert. */
1038 if (fill_rx) {
1039 count++;
1040 if (count >= 8) {
1041 priv->rxq.read = i;
1042 iwl_rx_queue_restock(priv);
1043 count = 0;
1044 }
1045 }
1046 }
1047
1048 /* Backtrack one entry */
1049 priv->rxq.read = i;
1050 iwl_rx_queue_restock(priv);
1051 }
1052
1053 /* call this function to flush any scheduled tasklet */
1054 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1055 {
1056 /* wait to make sure we flush pending tasklet*/
1057 synchronize_irq(priv->pci_dev->irq);
1058 tasklet_kill(&priv->irq_tasklet);
1059 }
1060
1061 static void iwl_error_recovery(struct iwl_priv *priv)
1062 {
1063 unsigned long flags;
1064
1065 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1066 sizeof(priv->staging_rxon));
1067 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1068 iwl_commit_rxon(priv);
1069
1070 iwl_rxon_add_station(priv, priv->bssid, 1);
1071
1072 spin_lock_irqsave(&priv->lock, flags);
1073 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1074 priv->error_recovering = 0;
1075 spin_unlock_irqrestore(&priv->lock, flags);
1076 }
1077
1078 static void iwl_irq_tasklet(struct iwl_priv *priv)
1079 {
1080 u32 inta, handled = 0;
1081 u32 inta_fh;
1082 unsigned long flags;
1083 #ifdef CONFIG_IWLWIFI_DEBUG
1084 u32 inta_mask;
1085 #endif
1086
1087 spin_lock_irqsave(&priv->lock, flags);
1088
1089 /* Ack/clear/reset pending uCode interrupts.
1090 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1091 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1092 inta = iwl_read32(priv, CSR_INT);
1093 iwl_write32(priv, CSR_INT, inta);
1094
1095 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1096 * Any new interrupts that happen after this, either while we're
1097 * in this tasklet, or later, will show up in next ISR/tasklet. */
1098 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1099 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1100
1101 #ifdef CONFIG_IWLWIFI_DEBUG
1102 if (priv->debug_level & IWL_DL_ISR) {
1103 /* just for debug */
1104 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1105 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1106 inta, inta_mask, inta_fh);
1107 }
1108 #endif
1109
1110 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1111 * atomic, make sure that inta covers all the interrupts that
1112 * we've discovered, even if FH interrupt came in just after
1113 * reading CSR_INT. */
1114 if (inta_fh & CSR49_FH_INT_RX_MASK)
1115 inta |= CSR_INT_BIT_FH_RX;
1116 if (inta_fh & CSR49_FH_INT_TX_MASK)
1117 inta |= CSR_INT_BIT_FH_TX;
1118
1119 /* Now service all interrupt bits discovered above. */
1120 if (inta & CSR_INT_BIT_HW_ERR) {
1121 IWL_ERR(priv, "Microcode HW error detected. Restarting.\n");
1122
1123 /* Tell the device to stop sending interrupts */
1124 iwl_disable_interrupts(priv);
1125
1126 iwl_irq_handle_error(priv);
1127
1128 handled |= CSR_INT_BIT_HW_ERR;
1129
1130 spin_unlock_irqrestore(&priv->lock, flags);
1131
1132 return;
1133 }
1134
1135 #ifdef CONFIG_IWLWIFI_DEBUG
1136 if (priv->debug_level & (IWL_DL_ISR)) {
1137 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1138 if (inta & CSR_INT_BIT_SCD)
1139 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1140 "the frame/frames.\n");
1141
1142 /* Alive notification via Rx interrupt will do the real work */
1143 if (inta & CSR_INT_BIT_ALIVE)
1144 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1145 }
1146 #endif
1147 /* Safely ignore these bits for debug checks below */
1148 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1149
1150 /* HW RF KILL switch toggled */
1151 if (inta & CSR_INT_BIT_RF_KILL) {
1152 int hw_rf_kill = 0;
1153 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1154 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1155 hw_rf_kill = 1;
1156
1157 IWL_DEBUG_RF_KILL(priv, "RF_KILL bit toggled to %s.\n",
1158 hw_rf_kill ? "disable radio" : "enable radio");
1159
1160 /* driver only loads ucode once setting the interface up.
1161 * the driver allows loading the ucode even if the radio
1162 * is killed. Hence update the killswitch state here. The
1163 * rfkill handler will care about restarting if needed.
1164 */
1165 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1166 if (hw_rf_kill)
1167 set_bit(STATUS_RF_KILL_HW, &priv->status);
1168 else
1169 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1170 queue_work(priv->workqueue, &priv->rf_kill);
1171 }
1172
1173 handled |= CSR_INT_BIT_RF_KILL;
1174 }
1175
1176 /* Chip got too hot and stopped itself */
1177 if (inta & CSR_INT_BIT_CT_KILL) {
1178 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1179 handled |= CSR_INT_BIT_CT_KILL;
1180 }
1181
1182 /* Error detected by uCode */
1183 if (inta & CSR_INT_BIT_SW_ERR) {
1184 IWL_ERR(priv, "Microcode SW error detected. "
1185 " Restarting 0x%X.\n", inta);
1186 iwl_irq_handle_error(priv);
1187 handled |= CSR_INT_BIT_SW_ERR;
1188 }
1189
1190 /* uCode wakes up after power-down sleep */
1191 if (inta & CSR_INT_BIT_WAKEUP) {
1192 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1193 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1194 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1195 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1196 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1197 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1198 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1199 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1200
1201 handled |= CSR_INT_BIT_WAKEUP;
1202 }
1203
1204 /* All uCode command responses, including Tx command responses,
1205 * Rx "responses" (frame-received notification), and other
1206 * notifications from uCode come through here*/
1207 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1208 iwl_rx_handle(priv);
1209 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1210 }
1211
1212 if (inta & CSR_INT_BIT_FH_TX) {
1213 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1214 handled |= CSR_INT_BIT_FH_TX;
1215 /* FH finished to write, send event */
1216 priv->ucode_write_complete = 1;
1217 wake_up_interruptible(&priv->wait_command_queue);
1218 }
1219
1220 if (inta & ~handled)
1221 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1222
1223 if (inta & ~CSR_INI_SET_MASK) {
1224 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1225 inta & ~CSR_INI_SET_MASK);
1226 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
1227 }
1228
1229 /* Re-enable all interrupts */
1230 /* only Re-enable if diabled by irq */
1231 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1232 iwl_enable_interrupts(priv);
1233
1234 #ifdef CONFIG_IWLWIFI_DEBUG
1235 if (priv->debug_level & (IWL_DL_ISR)) {
1236 inta = iwl_read32(priv, CSR_INT);
1237 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1238 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1239 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1240 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1241 }
1242 #endif
1243 spin_unlock_irqrestore(&priv->lock, flags);
1244 }
1245
1246 /******************************************************************************
1247 *
1248 * uCode download functions
1249 *
1250 ******************************************************************************/
1251
1252 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1253 {
1254 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1255 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1256 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1257 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1258 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1259 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1260 }
1261
1262 static void iwl_nic_start(struct iwl_priv *priv)
1263 {
1264 /* Remove all resets to allow NIC to operate */
1265 iwl_write32(priv, CSR_RESET, 0);
1266 }
1267
1268
1269 /**
1270 * iwl_read_ucode - Read uCode images from disk file.
1271 *
1272 * Copy into buffers for card to fetch via bus-mastering
1273 */
1274 static int iwl_read_ucode(struct iwl_priv *priv)
1275 {
1276 struct iwl_ucode *ucode;
1277 int ret = -EINVAL, index;
1278 const struct firmware *ucode_raw;
1279 const char *name_pre = priv->cfg->fw_name_pre;
1280 const unsigned int api_max = priv->cfg->ucode_api_max;
1281 const unsigned int api_min = priv->cfg->ucode_api_min;
1282 char buf[25];
1283 u8 *src;
1284 size_t len;
1285 u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
1286
1287 /* Ask kernel firmware_class module to get the boot firmware off disk.
1288 * request_firmware() is synchronous, file is in memory on return. */
1289 for (index = api_max; index >= api_min; index--) {
1290 sprintf(buf, "%s%d%s", name_pre, index, ".ucode");
1291 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
1292 if (ret < 0) {
1293 IWL_ERR(priv, "%s firmware file req failed: %d\n",
1294 buf, ret);
1295 if (ret == -ENOENT)
1296 continue;
1297 else
1298 goto error;
1299 } else {
1300 if (index < api_max)
1301 IWL_ERR(priv, "Loaded firmware %s, "
1302 "which is deprecated. "
1303 "Please use API v%u instead.\n",
1304 buf, api_max);
1305
1306 IWL_DEBUG_INFO(priv, "Got firmware '%s' file (%zd bytes) from disk\n",
1307 buf, ucode_raw->size);
1308 break;
1309 }
1310 }
1311
1312 if (ret < 0)
1313 goto error;
1314
1315 /* Make sure that we got at least our header! */
1316 if (ucode_raw->size < sizeof(*ucode)) {
1317 IWL_ERR(priv, "File size way too small!\n");
1318 ret = -EINVAL;
1319 goto err_release;
1320 }
1321
1322 /* Data from ucode file: header followed by uCode images */
1323 ucode = (void *)ucode_raw->data;
1324
1325 priv->ucode_ver = le32_to_cpu(ucode->ver);
1326 api_ver = IWL_UCODE_API(priv->ucode_ver);
1327 inst_size = le32_to_cpu(ucode->inst_size);
1328 data_size = le32_to_cpu(ucode->data_size);
1329 init_size = le32_to_cpu(ucode->init_size);
1330 init_data_size = le32_to_cpu(ucode->init_data_size);
1331 boot_size = le32_to_cpu(ucode->boot_size);
1332
1333 /* api_ver should match the api version forming part of the
1334 * firmware filename ... but we don't check for that and only rely
1335 * on the API version read from firmware header from here on forward */
1336
1337 if (api_ver < api_min || api_ver > api_max) {
1338 IWL_ERR(priv, "Driver unable to support your firmware API. "
1339 "Driver supports v%u, firmware is v%u.\n",
1340 api_max, api_ver);
1341 priv->ucode_ver = 0;
1342 ret = -EINVAL;
1343 goto err_release;
1344 }
1345 if (api_ver != api_max)
1346 IWL_ERR(priv, "Firmware has old API version. Expected v%u, "
1347 "got v%u. New firmware can be obtained "
1348 "from http://www.intellinuxwireless.org.\n",
1349 api_max, api_ver);
1350
1351 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
1352 IWL_UCODE_MAJOR(priv->ucode_ver),
1353 IWL_UCODE_MINOR(priv->ucode_ver),
1354 IWL_UCODE_API(priv->ucode_ver),
1355 IWL_UCODE_SERIAL(priv->ucode_ver));
1356
1357 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1358 priv->ucode_ver);
1359 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
1360 inst_size);
1361 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
1362 data_size);
1363 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
1364 init_size);
1365 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
1366 init_data_size);
1367 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
1368 boot_size);
1369
1370 /* Verify size of file vs. image size info in file's header */
1371 if (ucode_raw->size < sizeof(*ucode) +
1372 inst_size + data_size + init_size +
1373 init_data_size + boot_size) {
1374
1375 IWL_DEBUG_INFO(priv, "uCode file size %d too small\n",
1376 (int)ucode_raw->size);
1377 ret = -EINVAL;
1378 goto err_release;
1379 }
1380
1381 /* Verify that uCode images will fit in card's SRAM */
1382 if (inst_size > priv->hw_params.max_inst_size) {
1383 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
1384 inst_size);
1385 ret = -EINVAL;
1386 goto err_release;
1387 }
1388
1389 if (data_size > priv->hw_params.max_data_size) {
1390 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
1391 data_size);
1392 ret = -EINVAL;
1393 goto err_release;
1394 }
1395 if (init_size > priv->hw_params.max_inst_size) {
1396 IWL_INFO(priv, "uCode init instr len %d too large to fit in\n",
1397 init_size);
1398 ret = -EINVAL;
1399 goto err_release;
1400 }
1401 if (init_data_size > priv->hw_params.max_data_size) {
1402 IWL_INFO(priv, "uCode init data len %d too large to fit in\n",
1403 init_data_size);
1404 ret = -EINVAL;
1405 goto err_release;
1406 }
1407 if (boot_size > priv->hw_params.max_bsm_size) {
1408 IWL_INFO(priv, "uCode boot instr len %d too large to fit in\n",
1409 boot_size);
1410 ret = -EINVAL;
1411 goto err_release;
1412 }
1413
1414 /* Allocate ucode buffers for card's bus-master loading ... */
1415
1416 /* Runtime instructions and 2 copies of data:
1417 * 1) unmodified from disk
1418 * 2) backup cache for save/restore during power-downs */
1419 priv->ucode_code.len = inst_size;
1420 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1421
1422 priv->ucode_data.len = data_size;
1423 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1424
1425 priv->ucode_data_backup.len = data_size;
1426 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1427
1428 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
1429 !priv->ucode_data_backup.v_addr)
1430 goto err_pci_alloc;
1431
1432 /* Initialization instructions and data */
1433 if (init_size && init_data_size) {
1434 priv->ucode_init.len = init_size;
1435 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1436
1437 priv->ucode_init_data.len = init_data_size;
1438 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1439
1440 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1441 goto err_pci_alloc;
1442 }
1443
1444 /* Bootstrap (instructions only, no data) */
1445 if (boot_size) {
1446 priv->ucode_boot.len = boot_size;
1447 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1448
1449 if (!priv->ucode_boot.v_addr)
1450 goto err_pci_alloc;
1451 }
1452
1453 /* Copy images into buffers for card's bus-master reads ... */
1454
1455 /* Runtime instructions (first block of data in file) */
1456 src = &ucode->data[0];
1457 len = priv->ucode_code.len;
1458 IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode instr len %Zd\n", len);
1459 memcpy(priv->ucode_code.v_addr, src, len);
1460 IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1461 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1462
1463 /* Runtime data (2nd block)
1464 * NOTE: Copy into backup buffer will be done in iwl_up() */
1465 src = &ucode->data[inst_size];
1466 len = priv->ucode_data.len;
1467 IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode data len %Zd\n", len);
1468 memcpy(priv->ucode_data.v_addr, src, len);
1469 memcpy(priv->ucode_data_backup.v_addr, src, len);
1470
1471 /* Initialization instructions (3rd block) */
1472 if (init_size) {
1473 src = &ucode->data[inst_size + data_size];
1474 len = priv->ucode_init.len;
1475 IWL_DEBUG_INFO(priv, "Copying (but not loading) init instr len %Zd\n",
1476 len);
1477 memcpy(priv->ucode_init.v_addr, src, len);
1478 }
1479
1480 /* Initialization data (4th block) */
1481 if (init_data_size) {
1482 src = &ucode->data[inst_size + data_size + init_size];
1483 len = priv->ucode_init_data.len;
1484 IWL_DEBUG_INFO(priv, "Copying (but not loading) init data len %Zd\n",
1485 len);
1486 memcpy(priv->ucode_init_data.v_addr, src, len);
1487 }
1488
1489 /* Bootstrap instructions (5th block) */
1490 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1491 len = priv->ucode_boot.len;
1492 IWL_DEBUG_INFO(priv, "Copying (but not loading) boot instr len %Zd\n", len);
1493 memcpy(priv->ucode_boot.v_addr, src, len);
1494
1495 /* We have our copies now, allow OS release its copies */
1496 release_firmware(ucode_raw);
1497 return 0;
1498
1499 err_pci_alloc:
1500 IWL_ERR(priv, "failed to allocate pci memory\n");
1501 ret = -ENOMEM;
1502 iwl_dealloc_ucode_pci(priv);
1503
1504 err_release:
1505 release_firmware(ucode_raw);
1506
1507 error:
1508 return ret;
1509 }
1510
1511 /* temporary */
1512 static int iwl_mac_beacon_update(struct ieee80211_hw *hw,
1513 struct sk_buff *skb);
1514
1515 /**
1516 * iwl_alive_start - called after REPLY_ALIVE notification received
1517 * from protocol/runtime uCode (initialization uCode's
1518 * Alive gets handled by iwl_init_alive_start()).
1519 */
1520 static void iwl_alive_start(struct iwl_priv *priv)
1521 {
1522 int ret = 0;
1523
1524 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1525
1526 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1527 /* We had an error bringing up the hardware, so take it
1528 * all the way back down so we can try again */
1529 IWL_DEBUG_INFO(priv, "Alive failed.\n");
1530 goto restart;
1531 }
1532
1533 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1534 * This is a paranoid check, because we would not have gotten the
1535 * "runtime" alive if code weren't properly loaded. */
1536 if (iwl_verify_ucode(priv)) {
1537 /* Runtime instruction load was bad;
1538 * take it all the way back down so we can try again */
1539 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
1540 goto restart;
1541 }
1542
1543 iwl_clear_stations_table(priv);
1544 ret = priv->cfg->ops->lib->alive_notify(priv);
1545 if (ret) {
1546 IWL_WARN(priv,
1547 "Could not complete ALIVE transition [ntf]: %d\n", ret);
1548 goto restart;
1549 }
1550
1551 /* After the ALIVE response, we can send host commands to the uCode */
1552 set_bit(STATUS_ALIVE, &priv->status);
1553
1554 if (iwl_is_rfkill(priv))
1555 return;
1556
1557 ieee80211_wake_queues(priv->hw);
1558
1559 priv->active_rate = priv->rates_mask;
1560 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1561
1562 if (iwl_is_associated(priv)) {
1563 struct iwl_rxon_cmd *active_rxon =
1564 (struct iwl_rxon_cmd *)&priv->active_rxon;
1565 /* apply any changes in staging */
1566 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
1567 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1568 } else {
1569 /* Initialize our rx_config data */
1570 iwl_connection_init_rx_config(priv, priv->iw_mode);
1571 iwl_set_rxon_chain(priv);
1572 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1573 }
1574
1575 /* Configure Bluetooth device coexistence support */
1576 iwl_send_bt_config(priv);
1577
1578 iwl_reset_run_time_calib(priv);
1579
1580 /* Configure the adapter for unassociated operation */
1581 iwl_commit_rxon(priv);
1582
1583 /* At this point, the NIC is initialized and operational */
1584 iwl_rf_kill_ct_config(priv);
1585
1586 iwl_leds_register(priv);
1587
1588 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
1589 set_bit(STATUS_READY, &priv->status);
1590 wake_up_interruptible(&priv->wait_command_queue);
1591
1592 if (priv->error_recovering)
1593 iwl_error_recovery(priv);
1594
1595 iwl_power_update_mode(priv, 1);
1596
1597 /* reassociate for ADHOC mode */
1598 if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
1599 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
1600 priv->vif);
1601 if (beacon)
1602 iwl_mac_beacon_update(priv->hw, beacon);
1603 }
1604
1605
1606 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
1607 iwl_set_mode(priv, priv->iw_mode);
1608
1609 return;
1610
1611 restart:
1612 queue_work(priv->workqueue, &priv->restart);
1613 }
1614
1615 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1616
1617 static void __iwl_down(struct iwl_priv *priv)
1618 {
1619 unsigned long flags;
1620 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
1621
1622 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
1623
1624 if (!exit_pending)
1625 set_bit(STATUS_EXIT_PENDING, &priv->status);
1626
1627 iwl_leds_unregister(priv);
1628
1629 iwl_clear_stations_table(priv);
1630
1631 /* Unblock any waiting calls */
1632 wake_up_interruptible_all(&priv->wait_command_queue);
1633
1634 /* Wipe out the EXIT_PENDING status bit if we are not actually
1635 * exiting the module */
1636 if (!exit_pending)
1637 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1638
1639 /* stop and reset the on-board processor */
1640 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
1641
1642 /* tell the device to stop sending interrupts */
1643 spin_lock_irqsave(&priv->lock, flags);
1644 iwl_disable_interrupts(priv);
1645 spin_unlock_irqrestore(&priv->lock, flags);
1646 iwl_synchronize_irq(priv);
1647
1648 if (priv->mac80211_registered)
1649 ieee80211_stop_queues(priv->hw);
1650
1651 /* If we have not previously called iwl_init() then
1652 * clear all bits but the RF Kill and SUSPEND bits and return */
1653 if (!iwl_is_init(priv)) {
1654 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1655 STATUS_RF_KILL_HW |
1656 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
1657 STATUS_RF_KILL_SW |
1658 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1659 STATUS_GEO_CONFIGURED |
1660 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
1661 STATUS_IN_SUSPEND |
1662 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1663 STATUS_EXIT_PENDING;
1664 goto exit;
1665 }
1666
1667 /* ...otherwise clear out all the status bits but the RF Kill and
1668 * SUSPEND bits and continue taking the NIC down. */
1669 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1670 STATUS_RF_KILL_HW |
1671 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
1672 STATUS_RF_KILL_SW |
1673 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1674 STATUS_GEO_CONFIGURED |
1675 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
1676 STATUS_IN_SUSPEND |
1677 test_bit(STATUS_FW_ERROR, &priv->status) <<
1678 STATUS_FW_ERROR |
1679 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1680 STATUS_EXIT_PENDING;
1681
1682 spin_lock_irqsave(&priv->lock, flags);
1683 iwl_clear_bit(priv, CSR_GP_CNTRL,
1684 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
1685 spin_unlock_irqrestore(&priv->lock, flags);
1686
1687 iwl_txq_ctx_stop(priv);
1688 iwl_rxq_stop(priv);
1689
1690 spin_lock_irqsave(&priv->lock, flags);
1691 if (!iwl_grab_nic_access(priv)) {
1692 iwl_write_prph(priv, APMG_CLK_DIS_REG,
1693 APMG_CLK_VAL_DMA_CLK_RQT);
1694 iwl_release_nic_access(priv);
1695 }
1696 spin_unlock_irqrestore(&priv->lock, flags);
1697
1698 udelay(5);
1699
1700 /* FIXME: apm_ops.suspend(priv) */
1701 if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
1702 priv->cfg->ops->lib->apm_ops.stop(priv);
1703 else
1704 priv->cfg->ops->lib->apm_ops.reset(priv);
1705 exit:
1706 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
1707
1708 if (priv->ibss_beacon)
1709 dev_kfree_skb(priv->ibss_beacon);
1710 priv->ibss_beacon = NULL;
1711
1712 /* clear out any free frames */
1713 iwl_clear_free_frames(priv);
1714 }
1715
1716 static void iwl_down(struct iwl_priv *priv)
1717 {
1718 mutex_lock(&priv->mutex);
1719 __iwl_down(priv);
1720 mutex_unlock(&priv->mutex);
1721
1722 iwl_cancel_deferred_work(priv);
1723 }
1724
1725 #define MAX_HW_RESTARTS 5
1726
1727 static int __iwl_up(struct iwl_priv *priv)
1728 {
1729 int i;
1730 int ret;
1731
1732 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1733 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
1734 return -EIO;
1735 }
1736
1737 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
1738 IWL_ERR(priv, "ucode not available for device bringup\n");
1739 return -EIO;
1740 }
1741
1742 /* If platform's RF_KILL switch is NOT set to KILL */
1743 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
1744 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1745 else
1746 set_bit(STATUS_RF_KILL_HW, &priv->status);
1747
1748 if (iwl_is_rfkill(priv)) {
1749 iwl_enable_interrupts(priv);
1750 IWL_WARN(priv, "Radio disabled by %s RF Kill switch\n",
1751 test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
1752 return 0;
1753 }
1754
1755 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
1756
1757 ret = iwl_hw_nic_init(priv);
1758 if (ret) {
1759 IWL_ERR(priv, "Unable to init nic\n");
1760 return ret;
1761 }
1762
1763 /* make sure rfkill handshake bits are cleared */
1764 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1765 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1766 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1767
1768 /* clear (again), then enable host interrupts */
1769 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
1770 iwl_enable_interrupts(priv);
1771
1772 /* really make sure rfkill handshake bits are cleared */
1773 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1774 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1775
1776 /* Copy original ucode data image from disk into backup cache.
1777 * This will be used to initialize the on-board processor's
1778 * data SRAM for a clean start when the runtime program first loads. */
1779 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
1780 priv->ucode_data.len);
1781
1782 for (i = 0; i < MAX_HW_RESTARTS; i++) {
1783
1784 iwl_clear_stations_table(priv);
1785
1786 /* load bootstrap state machine,
1787 * load bootstrap program into processor's memory,
1788 * prepare to load the "initialize" uCode */
1789 ret = priv->cfg->ops->lib->load_ucode(priv);
1790
1791 if (ret) {
1792 IWL_ERR(priv, "Unable to set up bootstrap uCode: %d\n",
1793 ret);
1794 continue;
1795 }
1796
1797 /* Clear out the uCode error bit if it is set */
1798 clear_bit(STATUS_FW_ERROR, &priv->status);
1799
1800 /* start card; "initialize" will load runtime ucode */
1801 iwl_nic_start(priv);
1802
1803 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
1804
1805 return 0;
1806 }
1807
1808 set_bit(STATUS_EXIT_PENDING, &priv->status);
1809 __iwl_down(priv);
1810 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1811
1812 /* tried to restart and config the device for as long as our
1813 * patience could withstand */
1814 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
1815 return -EIO;
1816 }
1817
1818
1819 /*****************************************************************************
1820 *
1821 * Workqueue callbacks
1822 *
1823 *****************************************************************************/
1824
1825 static void iwl_bg_init_alive_start(struct work_struct *data)
1826 {
1827 struct iwl_priv *priv =
1828 container_of(data, struct iwl_priv, init_alive_start.work);
1829
1830 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1831 return;
1832
1833 mutex_lock(&priv->mutex);
1834 priv->cfg->ops->lib->init_alive_start(priv);
1835 mutex_unlock(&priv->mutex);
1836 }
1837
1838 static void iwl_bg_alive_start(struct work_struct *data)
1839 {
1840 struct iwl_priv *priv =
1841 container_of(data, struct iwl_priv, alive_start.work);
1842
1843 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1844 return;
1845
1846 mutex_lock(&priv->mutex);
1847 iwl_alive_start(priv);
1848 mutex_unlock(&priv->mutex);
1849 }
1850
1851 static void iwl_bg_run_time_calib_work(struct work_struct *work)
1852 {
1853 struct iwl_priv *priv = container_of(work, struct iwl_priv,
1854 run_time_calib_work);
1855
1856 mutex_lock(&priv->mutex);
1857
1858 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
1859 test_bit(STATUS_SCANNING, &priv->status)) {
1860 mutex_unlock(&priv->mutex);
1861 return;
1862 }
1863
1864 if (priv->start_calib) {
1865 iwl_chain_noise_calibration(priv, &priv->statistics);
1866
1867 iwl_sensitivity_calibration(priv, &priv->statistics);
1868 }
1869
1870 mutex_unlock(&priv->mutex);
1871 return;
1872 }
1873
1874 static void iwl_bg_up(struct work_struct *data)
1875 {
1876 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
1877
1878 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1879 return;
1880
1881 mutex_lock(&priv->mutex);
1882 __iwl_up(priv);
1883 mutex_unlock(&priv->mutex);
1884 iwl_rfkill_set_hw_state(priv);
1885 }
1886
1887 static void iwl_bg_restart(struct work_struct *data)
1888 {
1889 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
1890
1891 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1892 return;
1893
1894 iwl_down(priv);
1895 queue_work(priv->workqueue, &priv->up);
1896 }
1897
1898 static void iwl_bg_rx_replenish(struct work_struct *data)
1899 {
1900 struct iwl_priv *priv =
1901 container_of(data, struct iwl_priv, rx_replenish);
1902
1903 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1904 return;
1905
1906 mutex_lock(&priv->mutex);
1907 iwl_rx_replenish(priv);
1908 mutex_unlock(&priv->mutex);
1909 }
1910
1911 #define IWL_DELAY_NEXT_SCAN (HZ*2)
1912
1913 static void iwl_post_associate(struct iwl_priv *priv)
1914 {
1915 struct ieee80211_conf *conf = NULL;
1916 int ret = 0;
1917 unsigned long flags;
1918
1919 if (priv->iw_mode == NL80211_IFTYPE_AP) {
1920 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
1921 return;
1922 }
1923
1924 IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
1925 priv->assoc_id, priv->active_rxon.bssid_addr);
1926
1927
1928 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1929 return;
1930
1931
1932 if (!priv->vif || !priv->is_open)
1933 return;
1934
1935 iwl_power_cancel_timeout(priv);
1936 iwl_scan_cancel_timeout(priv, 200);
1937
1938 conf = ieee80211_get_hw_conf(priv->hw);
1939
1940 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1941 iwl_commit_rxon(priv);
1942
1943 iwl_setup_rxon_timing(priv);
1944 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
1945 sizeof(priv->rxon_timing), &priv->rxon_timing);
1946 if (ret)
1947 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
1948 "Attempting to continue.\n");
1949
1950 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
1951
1952 iwl_set_rxon_ht(priv, &priv->current_ht_config);
1953
1954 iwl_set_rxon_chain(priv);
1955 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
1956
1957 IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
1958 priv->assoc_id, priv->beacon_int);
1959
1960 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
1961 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1962 else
1963 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1964
1965 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
1966 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1967 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1968 else
1969 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1970
1971 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1972 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1973
1974 }
1975
1976 iwl_commit_rxon(priv);
1977
1978 switch (priv->iw_mode) {
1979 case NL80211_IFTYPE_STATION:
1980 break;
1981
1982 case NL80211_IFTYPE_ADHOC:
1983
1984 /* assume default assoc id */
1985 priv->assoc_id = 1;
1986
1987 iwl_rxon_add_station(priv, priv->bssid, 0);
1988 iwl_send_beacon_cmd(priv);
1989
1990 break;
1991
1992 default:
1993 IWL_ERR(priv, "%s Should not be called in %d mode\n",
1994 __func__, priv->iw_mode);
1995 break;
1996 }
1997
1998 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1999 priv->assoc_station_added = 1;
2000
2001 spin_lock_irqsave(&priv->lock, flags);
2002 iwl_activate_qos(priv, 0);
2003 spin_unlock_irqrestore(&priv->lock, flags);
2004
2005 /* the chain noise calibration will enabled PM upon completion
2006 * If chain noise has already been run, then we need to enable
2007 * power management here */
2008 if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2009 iwl_power_enable_management(priv);
2010
2011 /* Enable Rx differential gain and sensitivity calibrations */
2012 iwl_chain_noise_reset(priv);
2013 priv->start_calib = 1;
2014
2015 }
2016
2017 /*****************************************************************************
2018 *
2019 * mac80211 entry point functions
2020 *
2021 *****************************************************************************/
2022
2023 #define UCODE_READY_TIMEOUT (4 * HZ)
2024
2025 static int iwl_mac_start(struct ieee80211_hw *hw)
2026 {
2027 struct iwl_priv *priv = hw->priv;
2028 int ret;
2029
2030 IWL_DEBUG_MAC80211(priv, "enter\n");
2031
2032 /* we should be verifying the device is ready to be opened */
2033 mutex_lock(&priv->mutex);
2034
2035 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2036 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2037 * ucode filename and max sizes are card-specific. */
2038
2039 if (!priv->ucode_code.len) {
2040 ret = iwl_read_ucode(priv);
2041 if (ret) {
2042 IWL_ERR(priv, "Could not read microcode: %d\n", ret);
2043 mutex_unlock(&priv->mutex);
2044 return ret;
2045 }
2046 }
2047
2048 ret = __iwl_up(priv);
2049
2050 mutex_unlock(&priv->mutex);
2051
2052 iwl_rfkill_set_hw_state(priv);
2053
2054 if (ret)
2055 return ret;
2056
2057 if (iwl_is_rfkill(priv))
2058 goto out;
2059
2060 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
2061
2062 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2063 return 0;
2064
2065 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2066 * mac80211 will not be run successfully. */
2067 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2068 test_bit(STATUS_READY, &priv->status),
2069 UCODE_READY_TIMEOUT);
2070 if (!ret) {
2071 if (!test_bit(STATUS_READY, &priv->status)) {
2072 IWL_ERR(priv, "START_ALIVE timeout after %dms.\n",
2073 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2074 return -ETIMEDOUT;
2075 }
2076 }
2077
2078 out:
2079 priv->is_open = 1;
2080 IWL_DEBUG_MAC80211(priv, "leave\n");
2081 return 0;
2082 }
2083
2084 static void iwl_mac_stop(struct ieee80211_hw *hw)
2085 {
2086 struct iwl_priv *priv = hw->priv;
2087
2088 IWL_DEBUG_MAC80211(priv, "enter\n");
2089
2090 if (!priv->is_open) {
2091 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
2092 return;
2093 }
2094
2095 priv->is_open = 0;
2096
2097 if (iwl_is_ready_rf(priv)) {
2098 /* stop mac, cancel any scan request and clear
2099 * RXON_FILTER_ASSOC_MSK BIT
2100 */
2101 mutex_lock(&priv->mutex);
2102 iwl_scan_cancel_timeout(priv, 100);
2103 mutex_unlock(&priv->mutex);
2104 }
2105
2106 iwl_down(priv);
2107
2108 flush_workqueue(priv->workqueue);
2109
2110 /* enable interrupts again in order to receive rfkill changes */
2111 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2112 iwl_enable_interrupts(priv);
2113
2114 IWL_DEBUG_MAC80211(priv, "leave\n");
2115 }
2116
2117 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2118 {
2119 struct iwl_priv *priv = hw->priv;
2120
2121 IWL_DEBUG_MACDUMP(priv, "enter\n");
2122
2123 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2124 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2125
2126 if (iwl_tx_skb(priv, skb))
2127 dev_kfree_skb_any(skb);
2128
2129 IWL_DEBUG_MACDUMP(priv, "leave\n");
2130 return NETDEV_TX_OK;
2131 }
2132
2133 static int iwl_mac_add_interface(struct ieee80211_hw *hw,
2134 struct ieee80211_if_init_conf *conf)
2135 {
2136 struct iwl_priv *priv = hw->priv;
2137 unsigned long flags;
2138
2139 IWL_DEBUG_MAC80211(priv, "enter: type %d\n", conf->type);
2140
2141 if (priv->vif) {
2142 IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
2143 return -EOPNOTSUPP;
2144 }
2145
2146 spin_lock_irqsave(&priv->lock, flags);
2147 priv->vif = conf->vif;
2148 priv->iw_mode = conf->type;
2149
2150 spin_unlock_irqrestore(&priv->lock, flags);
2151
2152 mutex_lock(&priv->mutex);
2153
2154 if (conf->mac_addr) {
2155 IWL_DEBUG_MAC80211(priv, "Set %pM\n", conf->mac_addr);
2156 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2157 }
2158
2159 if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2160 /* we are not ready, will run again when ready */
2161 set_bit(STATUS_MODE_PENDING, &priv->status);
2162
2163 mutex_unlock(&priv->mutex);
2164
2165 IWL_DEBUG_MAC80211(priv, "leave\n");
2166 return 0;
2167 }
2168
2169 /**
2170 * iwl_mac_config - mac80211 config callback
2171 *
2172 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2173 * be set inappropriately and the driver currently sets the hardware up to
2174 * use it whenever needed.
2175 */
2176 static int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2177 {
2178 struct iwl_priv *priv = hw->priv;
2179 const struct iwl_channel_info *ch_info;
2180 struct ieee80211_conf *conf = &hw->conf;
2181 unsigned long flags = 0;
2182 int ret = 0;
2183 u16 ch;
2184 int scan_active = 0;
2185
2186 mutex_lock(&priv->mutex);
2187 IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n",
2188 conf->channel->hw_value, changed);
2189
2190 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2191 test_bit(STATUS_SCANNING, &priv->status))) {
2192 scan_active = 1;
2193 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
2194 }
2195
2196
2197 /* during scanning mac80211 will delay channel setting until
2198 * scan finish with changed = 0
2199 */
2200 if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
2201 if (scan_active)
2202 goto set_ch_out;
2203
2204 ch = ieee80211_frequency_to_channel(conf->channel->center_freq);
2205 ch_info = iwl_get_channel_info(priv, conf->channel->band, ch);
2206 if (!is_channel_valid(ch_info)) {
2207 IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
2208 ret = -EINVAL;
2209 goto set_ch_out;
2210 }
2211
2212 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2213 !is_channel_ibss(ch_info)) {
2214 IWL_ERR(priv, "channel %d in band %d not "
2215 "IBSS channel\n",
2216 conf->channel->hw_value, conf->channel->band);
2217 ret = -EINVAL;
2218 goto set_ch_out;
2219 }
2220
2221 priv->current_ht_config.is_ht = conf_is_ht(conf);
2222
2223 spin_lock_irqsave(&priv->lock, flags);
2224
2225
2226 /* if we are switching from ht to 2.4 clear flags
2227 * from any ht related info since 2.4 does not
2228 * support ht */
2229 if ((le16_to_cpu(priv->staging_rxon.channel) != ch))
2230 priv->staging_rxon.flags = 0;
2231
2232 iwl_set_rxon_channel(priv, conf->channel);
2233
2234 iwl_set_flags_for_band(priv, conf->channel->band);
2235 spin_unlock_irqrestore(&priv->lock, flags);
2236 set_ch_out:
2237 /* The list of supported rates and rate mask can be different
2238 * for each band; since the band may have changed, reset
2239 * the rate mask to what mac80211 lists */
2240 iwl_set_rate(priv);
2241 }
2242
2243 if (changed & IEEE80211_CONF_CHANGE_PS) {
2244 if (conf->flags & IEEE80211_CONF_PS)
2245 ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
2246 else
2247 ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
2248 if (ret)
2249 IWL_DEBUG_MAC80211(priv, "Error setting power level\n");
2250
2251 }
2252
2253 if (changed & IEEE80211_CONF_CHANGE_POWER) {
2254 IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
2255 priv->tx_power_user_lmt, conf->power_level);
2256
2257 iwl_set_tx_power(priv, conf->power_level, false);
2258 }
2259
2260 /* call to ensure that 4965 rx_chain is set properly in monitor mode */
2261 iwl_set_rxon_chain(priv);
2262
2263 if (changed & IEEE80211_CONF_CHANGE_RADIO_ENABLED) {
2264 if (conf->radio_enabled &&
2265 iwl_radio_kill_sw_enable_radio(priv)) {
2266 IWL_DEBUG_MAC80211(priv, "leave - RF-KILL - "
2267 "waiting for uCode\n");
2268 goto out;
2269 }
2270
2271 if (!conf->radio_enabled)
2272 iwl_radio_kill_sw_disable_radio(priv);
2273 }
2274
2275 if (!conf->radio_enabled) {
2276 IWL_DEBUG_MAC80211(priv, "leave - radio disabled\n");
2277 goto out;
2278 }
2279
2280 if (!iwl_is_ready(priv)) {
2281 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2282 goto out;
2283 }
2284
2285 if (scan_active)
2286 goto out;
2287
2288 if (memcmp(&priv->active_rxon,
2289 &priv->staging_rxon, sizeof(priv->staging_rxon)))
2290 iwl_commit_rxon(priv);
2291 else
2292 IWL_DEBUG_INFO(priv, "No re-sending same RXON configuration.\n");
2293
2294
2295 out:
2296 IWL_DEBUG_MAC80211(priv, "leave\n");
2297 mutex_unlock(&priv->mutex);
2298 return ret;
2299 }
2300
2301 static void iwl_config_ap(struct iwl_priv *priv)
2302 {
2303 int ret = 0;
2304 unsigned long flags;
2305
2306 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2307 return;
2308
2309 /* The following should be done only at AP bring up */
2310 if (!iwl_is_associated(priv)) {
2311
2312 /* RXON - unassoc (to set timing command) */
2313 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2314 iwl_commit_rxon(priv);
2315
2316 /* RXON Timing */
2317 iwl_setup_rxon_timing(priv);
2318 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2319 sizeof(priv->rxon_timing), &priv->rxon_timing);
2320 if (ret)
2321 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
2322 "Attempting to continue.\n");
2323
2324 iwl_set_rxon_chain(priv);
2325
2326 /* FIXME: what should be the assoc_id for AP? */
2327 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2328 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2329 priv->staging_rxon.flags |=
2330 RXON_FLG_SHORT_PREAMBLE_MSK;
2331 else
2332 priv->staging_rxon.flags &=
2333 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2334
2335 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2336 if (priv->assoc_capability &
2337 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2338 priv->staging_rxon.flags |=
2339 RXON_FLG_SHORT_SLOT_MSK;
2340 else
2341 priv->staging_rxon.flags &=
2342 ~RXON_FLG_SHORT_SLOT_MSK;
2343
2344 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2345 priv->staging_rxon.flags &=
2346 ~RXON_FLG_SHORT_SLOT_MSK;
2347 }
2348 /* restore RXON assoc */
2349 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2350 iwl_commit_rxon(priv);
2351 spin_lock_irqsave(&priv->lock, flags);
2352 iwl_activate_qos(priv, 1);
2353 spin_unlock_irqrestore(&priv->lock, flags);
2354 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2355 }
2356 iwl_send_beacon_cmd(priv);
2357
2358 /* FIXME - we need to add code here to detect a totally new
2359 * configuration, reset the AP, unassoc, rxon timing, assoc,
2360 * clear sta table, add BCAST sta... */
2361 }
2362
2363
2364 static int iwl_mac_config_interface(struct ieee80211_hw *hw,
2365 struct ieee80211_vif *vif,
2366 struct ieee80211_if_conf *conf)
2367 {
2368 struct iwl_priv *priv = hw->priv;
2369 int rc;
2370
2371 if (conf == NULL)
2372 return -EIO;
2373
2374 if (priv->vif != vif) {
2375 IWL_DEBUG_MAC80211(priv, "leave - priv->vif != vif\n");
2376 return 0;
2377 }
2378
2379 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2380 conf->changed & IEEE80211_IFCC_BEACON) {
2381 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2382 if (!beacon)
2383 return -ENOMEM;
2384 mutex_lock(&priv->mutex);
2385 rc = iwl_mac_beacon_update(hw, beacon);
2386 mutex_unlock(&priv->mutex);
2387 if (rc)
2388 return rc;
2389 }
2390
2391 if (!iwl_is_alive(priv))
2392 return -EAGAIN;
2393
2394 mutex_lock(&priv->mutex);
2395
2396 if (conf->bssid)
2397 IWL_DEBUG_MAC80211(priv, "bssid: %pM\n", conf->bssid);
2398
2399 /*
2400 * very dubious code was here; the probe filtering flag is never set:
2401 *
2402 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2403 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2404 */
2405
2406 if (priv->iw_mode == NL80211_IFTYPE_AP) {
2407 if (!conf->bssid) {
2408 conf->bssid = priv->mac_addr;
2409 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2410 IWL_DEBUG_MAC80211(priv, "bssid was set to: %pM\n",
2411 conf->bssid);
2412 }
2413 if (priv->ibss_beacon)
2414 dev_kfree_skb(priv->ibss_beacon);
2415
2416 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2417 }
2418
2419 if (iwl_is_rfkill(priv))
2420 goto done;
2421
2422 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2423 !is_multicast_ether_addr(conf->bssid)) {
2424 /* If there is currently a HW scan going on in the background
2425 * then we need to cancel it else the RXON below will fail. */
2426 if (iwl_scan_cancel_timeout(priv, 100)) {
2427 IWL_WARN(priv, "Aborted scan still in progress "
2428 "after 100ms\n");
2429 IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
2430 mutex_unlock(&priv->mutex);
2431 return -EAGAIN;
2432 }
2433 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2434
2435 /* TODO: Audit driver for usage of these members and see
2436 * if mac80211 deprecates them (priv->bssid looks like it
2437 * shouldn't be there, but I haven't scanned the IBSS code
2438 * to verify) - jpk */
2439 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2440
2441 if (priv->iw_mode == NL80211_IFTYPE_AP)
2442 iwl_config_ap(priv);
2443 else {
2444 rc = iwl_commit_rxon(priv);
2445 if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
2446 iwl_rxon_add_station(
2447 priv, priv->active_rxon.bssid_addr, 1);
2448 }
2449
2450 } else {
2451 iwl_scan_cancel_timeout(priv, 100);
2452 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2453 iwl_commit_rxon(priv);
2454 }
2455
2456 done:
2457 IWL_DEBUG_MAC80211(priv, "leave\n");
2458 mutex_unlock(&priv->mutex);
2459
2460 return 0;
2461 }
2462
2463 static void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2464 struct ieee80211_if_init_conf *conf)
2465 {
2466 struct iwl_priv *priv = hw->priv;
2467
2468 IWL_DEBUG_MAC80211(priv, "enter\n");
2469
2470 mutex_lock(&priv->mutex);
2471
2472 if (iwl_is_ready_rf(priv)) {
2473 iwl_scan_cancel_timeout(priv, 100);
2474 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2475 iwl_commit_rxon(priv);
2476 }
2477 if (priv->vif == conf->vif) {
2478 priv->vif = NULL;
2479 memset(priv->bssid, 0, ETH_ALEN);
2480 }
2481 mutex_unlock(&priv->mutex);
2482
2483 IWL_DEBUG_MAC80211(priv, "leave\n");
2484
2485 }
2486
2487 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2488 static void iwl_bss_info_changed(struct ieee80211_hw *hw,
2489 struct ieee80211_vif *vif,
2490 struct ieee80211_bss_conf *bss_conf,
2491 u32 changes)
2492 {
2493 struct iwl_priv *priv = hw->priv;
2494
2495 IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
2496
2497 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2498 IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
2499 bss_conf->use_short_preamble);
2500 if (bss_conf->use_short_preamble)
2501 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2502 else
2503 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2504 }
2505
2506 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2507 IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot);
2508 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2509 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2510 else
2511 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2512 }
2513
2514 if (changes & BSS_CHANGED_HT) {
2515 iwl_ht_conf(priv, bss_conf);
2516 iwl_set_rxon_chain(priv);
2517 }
2518
2519 if (changes & BSS_CHANGED_ASSOC) {
2520 IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
2521 /* This should never happen as this function should
2522 * never be called from interrupt context. */
2523 if (WARN_ON_ONCE(in_interrupt()))
2524 return;
2525 if (bss_conf->assoc) {
2526 priv->assoc_id = bss_conf->aid;
2527 priv->beacon_int = bss_conf->beacon_int;
2528 priv->power_data.dtim_period = bss_conf->dtim_period;
2529 priv->timestamp = bss_conf->timestamp;
2530 priv->assoc_capability = bss_conf->assoc_capability;
2531
2532 /* we have just associated, don't start scan too early
2533 * leave time for EAPOL exchange to complete
2534 */
2535 priv->next_scan_jiffies = jiffies +
2536 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2537 mutex_lock(&priv->mutex);
2538 iwl_post_associate(priv);
2539 mutex_unlock(&priv->mutex);
2540 } else {
2541 priv->assoc_id = 0;
2542 IWL_DEBUG_MAC80211(priv, "DISASSOC %d\n", bss_conf->assoc);
2543 }
2544 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2545 IWL_DEBUG_MAC80211(priv, "Associated Changes %d\n", changes);
2546 iwl_send_rxon_assoc(priv);
2547 }
2548
2549 }
2550
2551 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
2552 struct ieee80211_key_conf *keyconf, const u8 *addr,
2553 u32 iv32, u16 *phase1key)
2554 {
2555
2556 struct iwl_priv *priv = hw->priv;
2557 IWL_DEBUG_MAC80211(priv, "enter\n");
2558
2559 iwl_update_tkip_key(priv, keyconf, addr, iv32, phase1key);
2560
2561 IWL_DEBUG_MAC80211(priv, "leave\n");
2562 }
2563
2564 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2565 struct ieee80211_vif *vif,
2566 struct ieee80211_sta *sta,
2567 struct ieee80211_key_conf *key)
2568 {
2569 struct iwl_priv *priv = hw->priv;
2570 const u8 *addr;
2571 int ret;
2572 u8 sta_id;
2573 bool is_default_wep_key = false;
2574
2575 IWL_DEBUG_MAC80211(priv, "enter\n");
2576
2577 if (priv->hw_params.sw_crypto) {
2578 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
2579 return -EOPNOTSUPP;
2580 }
2581 addr = sta ? sta->addr : iwl_bcast_addr;
2582 sta_id = iwl_find_station(priv, addr);
2583 if (sta_id == IWL_INVALID_STATION) {
2584 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
2585 addr);
2586 return -EINVAL;
2587
2588 }
2589
2590 mutex_lock(&priv->mutex);
2591 iwl_scan_cancel_timeout(priv, 100);
2592 mutex_unlock(&priv->mutex);
2593
2594 /* If we are getting WEP group key and we didn't receive any key mapping
2595 * so far, we are in legacy wep mode (group key only), otherwise we are
2596 * in 1X mode.
2597 * In legacy wep mode, we use another host command to the uCode */
2598 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
2599 priv->iw_mode != NL80211_IFTYPE_AP) {
2600 if (cmd == SET_KEY)
2601 is_default_wep_key = !priv->key_mapping_key;
2602 else
2603 is_default_wep_key =
2604 (key->hw_key_idx == HW_KEY_DEFAULT);
2605 }
2606
2607 switch (cmd) {
2608 case SET_KEY:
2609 if (is_default_wep_key)
2610 ret = iwl_set_default_wep_key(priv, key);
2611 else
2612 ret = iwl_set_dynamic_key(priv, key, sta_id);
2613
2614 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
2615 break;
2616 case DISABLE_KEY:
2617 if (is_default_wep_key)
2618 ret = iwl_remove_default_wep_key(priv, key);
2619 else
2620 ret = iwl_remove_dynamic_key(priv, key, sta_id);
2621
2622 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
2623 break;
2624 default:
2625 ret = -EINVAL;
2626 }
2627
2628 IWL_DEBUG_MAC80211(priv, "leave\n");
2629
2630 return ret;
2631 }
2632
2633 static int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
2634 const struct ieee80211_tx_queue_params *params)
2635 {
2636 struct iwl_priv *priv = hw->priv;
2637 unsigned long flags;
2638 int q;
2639
2640 IWL_DEBUG_MAC80211(priv, "enter\n");
2641
2642 if (!iwl_is_ready_rf(priv)) {
2643 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2644 return -EIO;
2645 }
2646
2647 if (queue >= AC_NUM) {
2648 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
2649 return 0;
2650 }
2651
2652 q = AC_NUM - 1 - queue;
2653
2654 spin_lock_irqsave(&priv->lock, flags);
2655
2656 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
2657 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
2658 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
2659 priv->qos_data.def_qos_parm.ac[q].edca_txop =
2660 cpu_to_le16((params->txop * 32));
2661
2662 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
2663 priv->qos_data.qos_active = 1;
2664
2665 if (priv->iw_mode == NL80211_IFTYPE_AP)
2666 iwl_activate_qos(priv, 1);
2667 else if (priv->assoc_id && iwl_is_associated(priv))
2668 iwl_activate_qos(priv, 0);
2669
2670 spin_unlock_irqrestore(&priv->lock, flags);
2671
2672 IWL_DEBUG_MAC80211(priv, "leave\n");
2673 return 0;
2674 }
2675
2676 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
2677 enum ieee80211_ampdu_mlme_action action,
2678 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
2679 {
2680 struct iwl_priv *priv = hw->priv;
2681 int ret;
2682
2683 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
2684 sta->addr, tid);
2685
2686 if (!(priv->cfg->sku & IWL_SKU_N))
2687 return -EACCES;
2688
2689 switch (action) {
2690 case IEEE80211_AMPDU_RX_START:
2691 IWL_DEBUG_HT(priv, "start Rx\n");
2692 return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn);
2693 case IEEE80211_AMPDU_RX_STOP:
2694 IWL_DEBUG_HT(priv, "stop Rx\n");
2695 ret = iwl_sta_rx_agg_stop(priv, sta->addr, tid);
2696 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2697 return 0;
2698 else
2699 return ret;
2700 case IEEE80211_AMPDU_TX_START:
2701 IWL_DEBUG_HT(priv, "start Tx\n");
2702 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
2703 case IEEE80211_AMPDU_TX_STOP:
2704 IWL_DEBUG_HT(priv, "stop Tx\n");
2705 ret = iwl_tx_agg_stop(priv, sta->addr, tid);
2706 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2707 return 0;
2708 else
2709 return ret;
2710 default:
2711 IWL_DEBUG_HT(priv, "unknown\n");
2712 return -EINVAL;
2713 break;
2714 }
2715 return 0;
2716 }
2717
2718 static int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
2719 struct ieee80211_tx_queue_stats *stats)
2720 {
2721 struct iwl_priv *priv = hw->priv;
2722 int i, avail;
2723 struct iwl_tx_queue *txq;
2724 struct iwl_queue *q;
2725 unsigned long flags;
2726
2727 IWL_DEBUG_MAC80211(priv, "enter\n");
2728
2729 if (!iwl_is_ready_rf(priv)) {
2730 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2731 return -EIO;
2732 }
2733
2734 spin_lock_irqsave(&priv->lock, flags);
2735
2736 for (i = 0; i < AC_NUM; i++) {
2737 txq = &priv->txq[i];
2738 q = &txq->q;
2739 avail = iwl_queue_space(q);
2740
2741 stats[i].len = q->n_window - avail;
2742 stats[i].limit = q->n_window - q->high_mark;
2743 stats[i].count = q->n_window;
2744
2745 }
2746 spin_unlock_irqrestore(&priv->lock, flags);
2747
2748 IWL_DEBUG_MAC80211(priv, "leave\n");
2749
2750 return 0;
2751 }
2752
2753 static int iwl_mac_get_stats(struct ieee80211_hw *hw,
2754 struct ieee80211_low_level_stats *stats)
2755 {
2756 struct iwl_priv *priv = hw->priv;
2757
2758 priv = hw->priv;
2759 IWL_DEBUG_MAC80211(priv, "enter\n");
2760 IWL_DEBUG_MAC80211(priv, "leave\n");
2761
2762 return 0;
2763 }
2764
2765 static void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
2766 {
2767 struct iwl_priv *priv = hw->priv;
2768 unsigned long flags;
2769
2770 mutex_lock(&priv->mutex);
2771 IWL_DEBUG_MAC80211(priv, "enter\n");
2772
2773 spin_lock_irqsave(&priv->lock, flags);
2774 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
2775 spin_unlock_irqrestore(&priv->lock, flags);
2776
2777 iwl_reset_qos(priv);
2778
2779 spin_lock_irqsave(&priv->lock, flags);
2780 priv->assoc_id = 0;
2781 priv->assoc_capability = 0;
2782 priv->assoc_station_added = 0;
2783
2784 /* new association get rid of ibss beacon skb */
2785 if (priv->ibss_beacon)
2786 dev_kfree_skb(priv->ibss_beacon);
2787
2788 priv->ibss_beacon = NULL;
2789
2790 priv->beacon_int = priv->hw->conf.beacon_int;
2791 priv->timestamp = 0;
2792 if ((priv->iw_mode == NL80211_IFTYPE_STATION))
2793 priv->beacon_int = 0;
2794
2795 spin_unlock_irqrestore(&priv->lock, flags);
2796
2797 if (!iwl_is_ready_rf(priv)) {
2798 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2799 mutex_unlock(&priv->mutex);
2800 return;
2801 }
2802
2803 /* we are restarting association process
2804 * clear RXON_FILTER_ASSOC_MSK bit
2805 */
2806 if (priv->iw_mode != NL80211_IFTYPE_AP) {
2807 iwl_scan_cancel_timeout(priv, 100);
2808 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2809 iwl_commit_rxon(priv);
2810 }
2811
2812 iwl_power_update_mode(priv, 0);
2813
2814 /* Per mac80211.h: This is only used in IBSS mode... */
2815 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2816
2817 /* switch to CAM during association period.
2818 * the ucode will block any association/authentication
2819 * frome during assiciation period if it can not hear
2820 * the AP because of PM. the timer enable PM back is
2821 * association do not complete
2822 */
2823 if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
2824 IEEE80211_CHAN_RADAR))
2825 iwl_power_disable_management(priv, 3000);
2826
2827 IWL_DEBUG_MAC80211(priv, "leave - not in IBSS\n");
2828 mutex_unlock(&priv->mutex);
2829 return;
2830 }
2831
2832 iwl_set_rate(priv);
2833
2834 mutex_unlock(&priv->mutex);
2835
2836 IWL_DEBUG_MAC80211(priv, "leave\n");
2837 }
2838
2839 static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
2840 {
2841 struct iwl_priv *priv = hw->priv;
2842 unsigned long flags;
2843 __le64 timestamp;
2844
2845 IWL_DEBUG_MAC80211(priv, "enter\n");
2846
2847 if (!iwl_is_ready_rf(priv)) {
2848 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2849 return -EIO;
2850 }
2851
2852 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2853 IWL_DEBUG_MAC80211(priv, "leave - not IBSS\n");
2854 return -EIO;
2855 }
2856
2857 spin_lock_irqsave(&priv->lock, flags);
2858
2859 if (priv->ibss_beacon)
2860 dev_kfree_skb(priv->ibss_beacon);
2861
2862 priv->ibss_beacon = skb;
2863
2864 priv->assoc_id = 0;
2865 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
2866 priv->timestamp = le64_to_cpu(timestamp);
2867
2868 IWL_DEBUG_MAC80211(priv, "leave\n");
2869 spin_unlock_irqrestore(&priv->lock, flags);
2870
2871 iwl_reset_qos(priv);
2872
2873 iwl_post_associate(priv);
2874
2875
2876 return 0;
2877 }
2878
2879 /*****************************************************************************
2880 *
2881 * sysfs attributes
2882 *
2883 *****************************************************************************/
2884
2885 #ifdef CONFIG_IWLWIFI_DEBUG
2886
2887 /*
2888 * The following adds a new attribute to the sysfs representation
2889 * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
2890 * used for controlling the debug level.
2891 *
2892 * See the level definitions in iwl for details.
2893 */
2894
2895 static ssize_t show_debug_level(struct device *d,
2896 struct device_attribute *attr, char *buf)
2897 {
2898 struct iwl_priv *priv = d->driver_data;
2899
2900 return sprintf(buf, "0x%08X\n", priv->debug_level);
2901 }
2902 static ssize_t store_debug_level(struct device *d,
2903 struct device_attribute *attr,
2904 const char *buf, size_t count)
2905 {
2906 struct iwl_priv *priv = d->driver_data;
2907 unsigned long val;
2908 int ret;
2909
2910 ret = strict_strtoul(buf, 0, &val);
2911 if (ret)
2912 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
2913 else
2914 priv->debug_level = val;
2915
2916 return strnlen(buf, count);
2917 }
2918
2919 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
2920 show_debug_level, store_debug_level);
2921
2922
2923 #endif /* CONFIG_IWLWIFI_DEBUG */
2924
2925
2926 static ssize_t show_version(struct device *d,
2927 struct device_attribute *attr, char *buf)
2928 {
2929 struct iwl_priv *priv = d->driver_data;
2930 struct iwl_alive_resp *palive = &priv->card_alive;
2931 ssize_t pos = 0;
2932 u16 eeprom_ver;
2933
2934 if (palive->is_valid)
2935 pos += sprintf(buf + pos,
2936 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
2937 "fw type: 0x%01X 0x%01X\n",
2938 palive->ucode_major, palive->ucode_minor,
2939 palive->sw_rev[0], palive->sw_rev[1],
2940 palive->ver_type, palive->ver_subtype);
2941 else
2942 pos += sprintf(buf + pos, "fw not loaded\n");
2943
2944 if (priv->eeprom) {
2945 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
2946 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
2947 eeprom_ver);
2948 } else {
2949 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
2950 }
2951
2952 return pos;
2953 }
2954
2955 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
2956
2957 static ssize_t show_temperature(struct device *d,
2958 struct device_attribute *attr, char *buf)
2959 {
2960 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
2961
2962 if (!iwl_is_alive(priv))
2963 return -EAGAIN;
2964
2965 return sprintf(buf, "%d\n", priv->temperature);
2966 }
2967
2968 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
2969
2970 static ssize_t show_tx_power(struct device *d,
2971 struct device_attribute *attr, char *buf)
2972 {
2973 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
2974
2975 if (!iwl_is_ready_rf(priv))
2976 return sprintf(buf, "off\n");
2977 else
2978 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
2979 }
2980
2981 static ssize_t store_tx_power(struct device *d,
2982 struct device_attribute *attr,
2983 const char *buf, size_t count)
2984 {
2985 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
2986 unsigned long val;
2987 int ret;
2988
2989 ret = strict_strtoul(buf, 10, &val);
2990 if (ret)
2991 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
2992 else
2993 iwl_set_tx_power(priv, val, false);
2994
2995 return count;
2996 }
2997
2998 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
2999
3000 static ssize_t show_flags(struct device *d,
3001 struct device_attribute *attr, char *buf)
3002 {
3003 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3004
3005 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3006 }
3007
3008 static ssize_t store_flags(struct device *d,
3009 struct device_attribute *attr,
3010 const char *buf, size_t count)
3011 {
3012 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3013 unsigned long val;
3014 u32 flags;
3015 int ret = strict_strtoul(buf, 0, &val);
3016 if (ret)
3017 return ret;
3018 flags = (u32)val;
3019
3020 mutex_lock(&priv->mutex);
3021 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3022 /* Cancel any currently running scans... */
3023 if (iwl_scan_cancel_timeout(priv, 100))
3024 IWL_WARN(priv, "Could not cancel scan.\n");
3025 else {
3026 IWL_DEBUG_INFO(priv, "Commit rxon.flags = 0x%04X\n", flags);
3027 priv->staging_rxon.flags = cpu_to_le32(flags);
3028 iwl_commit_rxon(priv);
3029 }
3030 }
3031 mutex_unlock(&priv->mutex);
3032
3033 return count;
3034 }
3035
3036 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3037
3038 static ssize_t show_filter_flags(struct device *d,
3039 struct device_attribute *attr, char *buf)
3040 {
3041 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3042
3043 return sprintf(buf, "0x%04X\n",
3044 le32_to_cpu(priv->active_rxon.filter_flags));
3045 }
3046
3047 static ssize_t store_filter_flags(struct device *d,
3048 struct device_attribute *attr,
3049 const char *buf, size_t count)
3050 {
3051 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3052 unsigned long val;
3053 u32 filter_flags;
3054 int ret = strict_strtoul(buf, 0, &val);
3055 if (ret)
3056 return ret;
3057 filter_flags = (u32)val;
3058
3059 mutex_lock(&priv->mutex);
3060 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3061 /* Cancel any currently running scans... */
3062 if (iwl_scan_cancel_timeout(priv, 100))
3063 IWL_WARN(priv, "Could not cancel scan.\n");
3064 else {
3065 IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
3066 "0x%04X\n", filter_flags);
3067 priv->staging_rxon.filter_flags =
3068 cpu_to_le32(filter_flags);
3069 iwl_commit_rxon(priv);
3070 }
3071 }
3072 mutex_unlock(&priv->mutex);
3073
3074 return count;
3075 }
3076
3077 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3078 store_filter_flags);
3079
3080 static ssize_t store_power_level(struct device *d,
3081 struct device_attribute *attr,
3082 const char *buf, size_t count)
3083 {
3084 struct iwl_priv *priv = dev_get_drvdata(d);
3085 int ret;
3086 unsigned long mode;
3087
3088
3089 mutex_lock(&priv->mutex);
3090
3091 ret = strict_strtoul(buf, 10, &mode);
3092 if (ret)
3093 goto out;
3094
3095 ret = iwl_power_set_user_mode(priv, mode);
3096 if (ret) {
3097 IWL_DEBUG_MAC80211(priv, "failed setting power mode.\n");
3098 goto out;
3099 }
3100 ret = count;
3101
3102 out:
3103 mutex_unlock(&priv->mutex);
3104 return ret;
3105 }
3106
3107 static ssize_t show_power_level(struct device *d,
3108 struct device_attribute *attr, char *buf)
3109 {
3110 struct iwl_priv *priv = dev_get_drvdata(d);
3111 int mode = priv->power_data.user_power_setting;
3112 int system = priv->power_data.system_power_setting;
3113 int level = priv->power_data.power_mode;
3114 char *p = buf;
3115
3116 switch (system) {
3117 case IWL_POWER_SYS_AUTO:
3118 p += sprintf(p, "SYSTEM:auto");
3119 break;
3120 case IWL_POWER_SYS_AC:
3121 p += sprintf(p, "SYSTEM:ac");
3122 break;
3123 case IWL_POWER_SYS_BATTERY:
3124 p += sprintf(p, "SYSTEM:battery");
3125 break;
3126 }
3127
3128 p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO) ?
3129 "fixed" : "auto");
3130 p += sprintf(p, "\tINDEX:%d", level);
3131 p += sprintf(p, "\n");
3132 return p - buf + 1;
3133 }
3134
3135 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3136 store_power_level);
3137
3138
3139 static ssize_t show_statistics(struct device *d,
3140 struct device_attribute *attr, char *buf)
3141 {
3142 struct iwl_priv *priv = dev_get_drvdata(d);
3143 u32 size = sizeof(struct iwl_notif_statistics);
3144 u32 len = 0, ofs = 0;
3145 u8 *data = (u8 *)&priv->statistics;
3146 int rc = 0;
3147
3148 if (!iwl_is_alive(priv))
3149 return -EAGAIN;
3150
3151 mutex_lock(&priv->mutex);
3152 rc = iwl_send_statistics_request(priv, 0);
3153 mutex_unlock(&priv->mutex);
3154
3155 if (rc) {
3156 len = sprintf(buf,
3157 "Error sending statistics request: 0x%08X\n", rc);
3158 return len;
3159 }
3160
3161 while (size && (PAGE_SIZE - len)) {
3162 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3163 PAGE_SIZE - len, 1);
3164 len = strlen(buf);
3165 if (PAGE_SIZE - len)
3166 buf[len++] = '\n';
3167
3168 ofs += 16;
3169 size -= min(size, 16U);
3170 }
3171
3172 return len;
3173 }
3174
3175 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3176
3177
3178 /*****************************************************************************
3179 *
3180 * driver setup and teardown
3181 *
3182 *****************************************************************************/
3183
3184 static void iwl_setup_deferred_work(struct iwl_priv *priv)
3185 {
3186 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3187
3188 init_waitqueue_head(&priv->wait_command_queue);
3189
3190 INIT_WORK(&priv->up, iwl_bg_up);
3191 INIT_WORK(&priv->restart, iwl_bg_restart);
3192 INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
3193 INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
3194 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
3195 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
3196 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
3197 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
3198
3199 iwl_setup_scan_deferred_work(priv);
3200 iwl_setup_power_deferred_work(priv);
3201
3202 if (priv->cfg->ops->lib->setup_deferred_work)
3203 priv->cfg->ops->lib->setup_deferred_work(priv);
3204
3205 init_timer(&priv->statistics_periodic);
3206 priv->statistics_periodic.data = (unsigned long)priv;
3207 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3208
3209 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3210 iwl_irq_tasklet, (unsigned long)priv);
3211 }
3212
3213 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3214 {
3215 if (priv->cfg->ops->lib->cancel_deferred_work)
3216 priv->cfg->ops->lib->cancel_deferred_work(priv);
3217
3218 cancel_delayed_work_sync(&priv->init_alive_start);
3219 cancel_delayed_work(&priv->scan_check);
3220 cancel_delayed_work_sync(&priv->set_power_save);
3221 cancel_delayed_work(&priv->alive_start);
3222 cancel_work_sync(&priv->beacon_update);
3223 del_timer_sync(&priv->statistics_periodic);
3224 }
3225
3226 static struct attribute *iwl_sysfs_entries[] = {
3227 &dev_attr_flags.attr,
3228 &dev_attr_filter_flags.attr,
3229 &dev_attr_power_level.attr,
3230 &dev_attr_statistics.attr,
3231 &dev_attr_temperature.attr,
3232 &dev_attr_tx_power.attr,
3233 #ifdef CONFIG_IWLWIFI_DEBUG
3234 &dev_attr_debug_level.attr,
3235 #endif
3236 &dev_attr_version.attr,
3237
3238 NULL
3239 };
3240
3241 static struct attribute_group iwl_attribute_group = {
3242 .name = NULL, /* put in device directory */
3243 .attrs = iwl_sysfs_entries,
3244 };
3245
3246 static struct ieee80211_ops iwl_hw_ops = {
3247 .tx = iwl_mac_tx,
3248 .start = iwl_mac_start,
3249 .stop = iwl_mac_stop,
3250 .add_interface = iwl_mac_add_interface,
3251 .remove_interface = iwl_mac_remove_interface,
3252 .config = iwl_mac_config,
3253 .config_interface = iwl_mac_config_interface,
3254 .configure_filter = iwl_configure_filter,
3255 .set_key = iwl_mac_set_key,
3256 .update_tkip_key = iwl_mac_update_tkip_key,
3257 .get_stats = iwl_mac_get_stats,
3258 .get_tx_stats = iwl_mac_get_tx_stats,
3259 .conf_tx = iwl_mac_conf_tx,
3260 .reset_tsf = iwl_mac_reset_tsf,
3261 .bss_info_changed = iwl_bss_info_changed,
3262 .ampdu_action = iwl_mac_ampdu_action,
3263 .hw_scan = iwl_mac_hw_scan
3264 };
3265
3266 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3267 {
3268 int err = 0;
3269 struct iwl_priv *priv;
3270 struct ieee80211_hw *hw;
3271 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3272 unsigned long flags;
3273 u16 pci_cmd;
3274
3275 /************************
3276 * 1. Allocating HW data
3277 ************************/
3278
3279 /* Disabling hardware scan means that mac80211 will perform scans
3280 * "the hard way", rather than using device's scan. */
3281 if (cfg->mod_params->disable_hw_scan) {
3282 if (cfg->mod_params->debug & IWL_DL_INFO)
3283 dev_printk(KERN_DEBUG, &(pdev->dev),
3284 "Disabling hw_scan\n");
3285 iwl_hw_ops.hw_scan = NULL;
3286 }
3287
3288 hw = iwl_alloc_all(cfg, &iwl_hw_ops);
3289 if (!hw) {
3290 err = -ENOMEM;
3291 goto out;
3292 }
3293 priv = hw->priv;
3294 /* At this point both hw and priv are allocated. */
3295
3296 SET_IEEE80211_DEV(hw, &pdev->dev);
3297
3298 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3299 priv->cfg = cfg;
3300 priv->pci_dev = pdev;
3301
3302 #ifdef CONFIG_IWLWIFI_DEBUG
3303 priv->debug_level = priv->cfg->mod_params->debug;
3304 atomic_set(&priv->restrict_refcnt, 0);
3305 #endif
3306
3307 /**************************
3308 * 2. Initializing PCI bus
3309 **************************/
3310 if (pci_enable_device(pdev)) {
3311 err = -ENODEV;
3312 goto out_ieee80211_free_hw;
3313 }
3314
3315 pci_set_master(pdev);
3316
3317 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
3318 if (!err)
3319 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
3320 if (err) {
3321 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3322 if (!err)
3323 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3324 /* both attempts failed: */
3325 if (err) {
3326 IWL_WARN(priv, "No suitable DMA available.\n");
3327 goto out_pci_disable_device;
3328 }
3329 }
3330
3331 err = pci_request_regions(pdev, DRV_NAME);
3332 if (err)
3333 goto out_pci_disable_device;
3334
3335 pci_set_drvdata(pdev, priv);
3336
3337
3338 /***********************
3339 * 3. Read REV register
3340 ***********************/
3341 priv->hw_base = pci_iomap(pdev, 0, 0);
3342 if (!priv->hw_base) {
3343 err = -ENODEV;
3344 goto out_pci_release_regions;
3345 }
3346
3347 IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
3348 (unsigned long long) pci_resource_len(pdev, 0));
3349 IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
3350
3351 iwl_hw_detect(priv);
3352 IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s REV=0x%X\n",
3353 priv->cfg->name, priv->hw_rev);
3354
3355 /* We disable the RETRY_TIMEOUT register (0x41) to keep
3356 * PCI Tx retries from interfering with C3 CPU state */
3357 pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
3358
3359 /* amp init */
3360 err = priv->cfg->ops->lib->apm_ops.init(priv);
3361 if (err < 0) {
3362 IWL_ERR(priv, "Failed to init APMG\n");
3363 goto out_iounmap;
3364 }
3365 /*****************
3366 * 4. Read EEPROM
3367 *****************/
3368 /* Read the EEPROM */
3369 err = iwl_eeprom_init(priv);
3370 if (err) {
3371 IWL_ERR(priv, "Unable to init EEPROM\n");
3372 goto out_iounmap;
3373 }
3374 err = iwl_eeprom_check_version(priv);
3375 if (err)
3376 goto out_free_eeprom;
3377
3378 /* extract MAC Address */
3379 iwl_eeprom_get_mac(priv, priv->mac_addr);
3380 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
3381 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
3382
3383 /************************
3384 * 5. Setup HW constants
3385 ************************/
3386 if (iwl_set_hw_params(priv)) {
3387 IWL_ERR(priv, "failed to set hw parameters\n");
3388 goto out_free_eeprom;
3389 }
3390
3391 /*******************
3392 * 6. Setup priv
3393 *******************/
3394
3395 err = iwl_init_drv(priv);
3396 if (err)
3397 goto out_free_eeprom;
3398 /* At this point both hw and priv are initialized. */
3399
3400 /**********************************
3401 * 7. Initialize module parameters
3402 **********************************/
3403
3404 /* Disable radio (SW RF KILL) via parameter when loading driver */
3405 if (priv->cfg->mod_params->disable) {
3406 set_bit(STATUS_RF_KILL_SW, &priv->status);
3407 IWL_DEBUG_INFO(priv, "Radio disabled.\n");
3408 }
3409
3410 /********************
3411 * 8. Setup services
3412 ********************/
3413 spin_lock_irqsave(&priv->lock, flags);
3414 iwl_disable_interrupts(priv);
3415 spin_unlock_irqrestore(&priv->lock, flags);
3416
3417 pci_enable_msi(priv->pci_dev);
3418
3419 err = request_irq(priv->pci_dev->irq, iwl_isr, IRQF_SHARED,
3420 DRV_NAME, priv);
3421 if (err) {
3422 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
3423 goto out_disable_msi;
3424 }
3425 err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
3426 if (err) {
3427 IWL_ERR(priv, "failed to create sysfs device attributes\n");
3428 goto out_free_irq;
3429 }
3430
3431 iwl_setup_deferred_work(priv);
3432 iwl_setup_rx_handlers(priv);
3433
3434 /**********************************
3435 * 9. Setup and register mac80211
3436 **********************************/
3437
3438 /* enable interrupts if needed: hw bug w/a */
3439 pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
3440 if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
3441 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
3442 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
3443 }
3444
3445 iwl_enable_interrupts(priv);
3446
3447 err = iwl_setup_mac(priv);
3448 if (err)
3449 goto out_remove_sysfs;
3450
3451 err = iwl_dbgfs_register(priv, DRV_NAME);
3452 if (err)
3453 IWL_ERR(priv, "failed to create debugfs files\n");
3454
3455 /* If platform's RF_KILL switch is NOT set to KILL */
3456 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3457 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3458 else
3459 set_bit(STATUS_RF_KILL_HW, &priv->status);
3460
3461 err = iwl_rfkill_init(priv);
3462 if (err)
3463 IWL_ERR(priv, "Unable to initialize RFKILL system. "
3464 "Ignoring error: %d\n", err);
3465 else
3466 iwl_rfkill_set_hw_state(priv);
3467
3468 iwl_power_initialize(priv);
3469 return 0;
3470
3471 out_remove_sysfs:
3472 destroy_workqueue(priv->workqueue);
3473 priv->workqueue = NULL;
3474 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3475 out_free_irq:
3476 free_irq(priv->pci_dev->irq, priv);
3477 out_disable_msi:
3478 pci_disable_msi(priv->pci_dev);
3479 iwl_uninit_drv(priv);
3480 out_free_eeprom:
3481 iwl_eeprom_free(priv);
3482 out_iounmap:
3483 pci_iounmap(pdev, priv->hw_base);
3484 out_pci_release_regions:
3485 pci_set_drvdata(pdev, NULL);
3486 pci_release_regions(pdev);
3487 out_pci_disable_device:
3488 pci_disable_device(pdev);
3489 out_ieee80211_free_hw:
3490 ieee80211_free_hw(priv->hw);
3491 out:
3492 return err;
3493 }
3494
3495 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
3496 {
3497 struct iwl_priv *priv = pci_get_drvdata(pdev);
3498 unsigned long flags;
3499
3500 if (!priv)
3501 return;
3502
3503 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
3504
3505 iwl_dbgfs_unregister(priv);
3506 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3507
3508 /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3509 * to be called and iwl_down since we are removing the device
3510 * we need to set STATUS_EXIT_PENDING bit.
3511 */
3512 set_bit(STATUS_EXIT_PENDING, &priv->status);
3513 if (priv->mac80211_registered) {
3514 ieee80211_unregister_hw(priv->hw);
3515 priv->mac80211_registered = 0;
3516 } else {
3517 iwl_down(priv);
3518 }
3519
3520 /* make sure we flush any pending irq or
3521 * tasklet for the driver
3522 */
3523 spin_lock_irqsave(&priv->lock, flags);
3524 iwl_disable_interrupts(priv);
3525 spin_unlock_irqrestore(&priv->lock, flags);
3526
3527 iwl_synchronize_irq(priv);
3528
3529 iwl_rfkill_unregister(priv);
3530 iwl_dealloc_ucode_pci(priv);
3531
3532 if (priv->rxq.bd)
3533 iwl_rx_queue_free(priv, &priv->rxq);
3534 iwl_hw_txq_ctx_free(priv);
3535
3536 iwl_clear_stations_table(priv);
3537 iwl_eeprom_free(priv);
3538
3539
3540 /*netif_stop_queue(dev); */
3541 flush_workqueue(priv->workqueue);
3542
3543 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3544 * priv->workqueue... so we can't take down the workqueue
3545 * until now... */
3546 destroy_workqueue(priv->workqueue);
3547 priv->workqueue = NULL;
3548
3549 free_irq(priv->pci_dev->irq, priv);
3550 pci_disable_msi(priv->pci_dev);
3551 pci_iounmap(pdev, priv->hw_base);
3552 pci_release_regions(pdev);
3553 pci_disable_device(pdev);
3554 pci_set_drvdata(pdev, NULL);
3555
3556 iwl_uninit_drv(priv);
3557
3558 if (priv->ibss_beacon)
3559 dev_kfree_skb(priv->ibss_beacon);
3560
3561 ieee80211_free_hw(priv->hw);
3562 }
3563
3564 #ifdef CONFIG_PM
3565
3566 static int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
3567 {
3568 struct iwl_priv *priv = pci_get_drvdata(pdev);
3569
3570 if (priv->is_open) {
3571 set_bit(STATUS_IN_SUSPEND, &priv->status);
3572 iwl_mac_stop(priv->hw);
3573 priv->is_open = 1;
3574 }
3575
3576 pci_save_state(pdev);
3577 pci_disable_device(pdev);
3578 pci_set_power_state(pdev, PCI_D3hot);
3579
3580 return 0;
3581 }
3582
3583 static int iwl_pci_resume(struct pci_dev *pdev)
3584 {
3585 struct iwl_priv *priv = pci_get_drvdata(pdev);
3586 int ret;
3587
3588 pci_set_power_state(pdev, PCI_D0);
3589 ret = pci_enable_device(pdev);
3590 if (ret)
3591 return ret;
3592 pci_restore_state(pdev);
3593 iwl_enable_interrupts(priv);
3594
3595 if (priv->is_open)
3596 iwl_mac_start(priv->hw);
3597
3598 clear_bit(STATUS_IN_SUSPEND, &priv->status);
3599 return 0;
3600 }
3601
3602 #endif /* CONFIG_PM */
3603
3604 /*****************************************************************************
3605 *
3606 * driver and module entry point
3607 *
3608 *****************************************************************************/
3609
3610 /* Hardware specific file defines the PCI IDs table for that hardware module */
3611 static struct pci_device_id iwl_hw_card_ids[] = {
3612 #ifdef CONFIG_IWL4965
3613 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
3614 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
3615 #endif /* CONFIG_IWL4965 */
3616 #ifdef CONFIG_IWL5000
3617 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
3618 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
3619 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
3620 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
3621 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
3622 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
3623 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
3624 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
3625 {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
3626 {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
3627 /* 5350 WiFi/WiMax */
3628 {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
3629 {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
3630 {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
3631 /* 5150 Wifi/WiMax */
3632 {IWL_PCI_DEVICE(0x423C, PCI_ANY_ID, iwl5150_agn_cfg)},
3633 {IWL_PCI_DEVICE(0x423D, PCI_ANY_ID, iwl5150_agn_cfg)},
3634 /* 6000/6050 Series */
3635 {IWL_PCI_DEVICE(0x0082, 0x1102, iwl6000_2ag_cfg)},
3636 {IWL_PCI_DEVICE(0x0085, 0x1112, iwl6000_2ag_cfg)},
3637 {IWL_PCI_DEVICE(0x0082, 0x1122, iwl6000_2ag_cfg)},
3638 {IWL_PCI_DEVICE(0x422B, PCI_ANY_ID, iwl6000_3agn_cfg)},
3639 {IWL_PCI_DEVICE(0x4238, PCI_ANY_ID, iwl6000_3agn_cfg)},
3640 {IWL_PCI_DEVICE(0x0082, PCI_ANY_ID, iwl6000_2agn_cfg)},
3641 {IWL_PCI_DEVICE(0x0085, PCI_ANY_ID, iwl6000_3agn_cfg)},
3642 {IWL_PCI_DEVICE(0x0086, PCI_ANY_ID, iwl6050_3agn_cfg)},
3643 {IWL_PCI_DEVICE(0x0087, PCI_ANY_ID, iwl6050_2agn_cfg)},
3644 {IWL_PCI_DEVICE(0x0088, PCI_ANY_ID, iwl6050_3agn_cfg)},
3645 {IWL_PCI_DEVICE(0x0089, PCI_ANY_ID, iwl6050_2agn_cfg)},
3646 /* 1000 Series WiFi */
3647 {IWL_PCI_DEVICE(0x0083, PCI_ANY_ID, iwl1000_bgn_cfg)},
3648 {IWL_PCI_DEVICE(0x0084, PCI_ANY_ID, iwl1000_bgn_cfg)},
3649 #endif /* CONFIG_IWL5000 */
3650
3651 {0}
3652 };
3653 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
3654
3655 static struct pci_driver iwl_driver = {
3656 .name = DRV_NAME,
3657 .id_table = iwl_hw_card_ids,
3658 .probe = iwl_pci_probe,
3659 .remove = __devexit_p(iwl_pci_remove),
3660 #ifdef CONFIG_PM
3661 .suspend = iwl_pci_suspend,
3662 .resume = iwl_pci_resume,
3663 #endif
3664 };
3665
3666 static int __init iwl_init(void)
3667 {
3668
3669 int ret;
3670 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
3671 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
3672
3673 ret = iwlagn_rate_control_register();
3674 if (ret) {
3675 printk(KERN_ERR DRV_NAME
3676 "Unable to register rate control algorithm: %d\n", ret);
3677 return ret;
3678 }
3679
3680 ret = pci_register_driver(&iwl_driver);
3681 if (ret) {
3682 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
3683 goto error_register;
3684 }
3685
3686 return ret;
3687
3688 error_register:
3689 iwlagn_rate_control_unregister();
3690 return ret;
3691 }
3692
3693 static void __exit iwl_exit(void)
3694 {
3695 pci_unregister_driver(&iwl_driver);
3696 iwlagn_rate_control_unregister();
3697 }
3698
3699 module_exit(iwl_exit);
3700 module_init(iwl_init);
Linux kernel - Deliverables
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