projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-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 /*
605 * QoS support
606 */
607 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
608 {
609 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
610 return;
611
612 priv->qos_data.def_qos_parm.qos_flags = 0;
613
614 if (priv->qos_data.qos_cap.q_AP.queue_request &&
615 !priv->qos_data.qos_cap.q_AP.txop_request)
616 priv->qos_data.def_qos_parm.qos_flags |=
617 QOS_PARAM_FLG_TXOP_TYPE_MSK;
618 if (priv->qos_data.qos_active)
619 priv->qos_data.def_qos_parm.qos_flags |=
620 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
621
622 if (priv->current_ht_config.is_ht)
623 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
624
625 if (force || iwl_is_associated(priv)) {
626 IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
627 priv->qos_data.qos_active,
628 priv->qos_data.def_qos_parm.qos_flags);
629
630 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
631 sizeof(struct iwl_qosparam_cmd),
632 &priv->qos_data.def_qos_parm, NULL);
633 }
634 }
635
636 #define MAX_UCODE_BEACON_INTERVAL 4096
637
638 static u16 iwl_adjust_beacon_interval(u16 beacon_val)
639 {
640 u16 new_val = 0;
641 u16 beacon_factor = 0;
642
643 beacon_factor = (beacon_val + MAX_UCODE_BEACON_INTERVAL)
644 / MAX_UCODE_BEACON_INTERVAL;
645 new_val = beacon_val / beacon_factor;
646
647 if (!new_val)
648 new_val = MAX_UCODE_BEACON_INTERVAL;
649
650 return new_val;
651 }
652
653 static void iwl_setup_rxon_timing(struct iwl_priv *priv)
654 {
655 u64 tsf;
656 s32 interval_tm, rem;
657 unsigned long flags;
658 struct ieee80211_conf *conf = NULL;
659 u16 beacon_int = 0;
660
661 conf = ieee80211_get_hw_conf(priv->hw);
662
663 spin_lock_irqsave(&priv->lock, flags);
664 priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
665 priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
666
667 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
668 beacon_int = iwl_adjust_beacon_interval(priv->beacon_int);
669 priv->rxon_timing.atim_window = 0;
670 } else {
671 beacon_int = iwl_adjust_beacon_interval(conf->beacon_int);
672
673 /* TODO: we need to get atim_window from upper stack
674 * for now we set to 0 */
675 priv->rxon_timing.atim_window = 0;
676 }
677
678 priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
679
680 tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
681 interval_tm = beacon_int * 1024;
682 rem = do_div(tsf, interval_tm);
683 priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
684
685 spin_unlock_irqrestore(&priv->lock, flags);
686 IWL_DEBUG_ASSOC(priv, "beacon interval %d beacon timer %d beacon tim %d\n",
687 le16_to_cpu(priv->rxon_timing.beacon_interval),
688 le32_to_cpu(priv->rxon_timing.beacon_init_val),
689 le16_to_cpu(priv->rxon_timing.atim_window));
690 }
691
692 static int iwl_set_mode(struct iwl_priv *priv, int mode)
693 {
694 iwl_connection_init_rx_config(priv, mode);
695 iwl_set_rxon_chain(priv);
696 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
697
698 iwl_clear_stations_table(priv);
699
700 /* dont commit rxon if rf-kill is on*/
701 if (!iwl_is_ready_rf(priv))
702 return -EAGAIN;
703
704 cancel_delayed_work(&priv->scan_check);
705 if (iwl_scan_cancel_timeout(priv, 100)) {
706 IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
707 IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
708 return -EAGAIN;
709 }
710
711 iwl_commit_rxon(priv);
712
713 return 0;
714 }
715
716 /******************************************************************************
717 *
718 * Generic RX handler implementations
719 *
720 ******************************************************************************/
721 static void iwl_rx_reply_alive(struct iwl_priv *priv,
722 struct iwl_rx_mem_buffer *rxb)
723 {
724 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
725 struct iwl_alive_resp *palive;
726 struct delayed_work *pwork;
727
728 palive = &pkt->u.alive_frame;
729
730 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
731 "0x%01X 0x%01X\n",
732 palive->is_valid, palive->ver_type,
733 palive->ver_subtype);
734
735 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
736 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
737 memcpy(&priv->card_alive_init,
738 &pkt->u.alive_frame,
739 sizeof(struct iwl_init_alive_resp));
740 pwork = &priv->init_alive_start;
741 } else {
742 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
743 memcpy(&priv->card_alive, &pkt->u.alive_frame,
744 sizeof(struct iwl_alive_resp));
745 pwork = &priv->alive_start;
746 }
747
748 /* We delay the ALIVE response by 5ms to
749 * give the HW RF Kill time to activate... */
750 if (palive->is_valid == UCODE_VALID_OK)
751 queue_delayed_work(priv->workqueue, pwork,
752 msecs_to_jiffies(5));
753 else
754 IWL_WARN(priv, "uCode did not respond OK.\n");
755 }
756
757 static void iwl_bg_beacon_update(struct work_struct *work)
758 {
759 struct iwl_priv *priv =
760 container_of(work, struct iwl_priv, beacon_update);
761 struct sk_buff *beacon;
762
763 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
764 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
765
766 if (!beacon) {
767 IWL_ERR(priv, "update beacon failed\n");
768 return;
769 }
770
771 mutex_lock(&priv->mutex);
772 /* new beacon skb is allocated every time; dispose previous.*/
773 if (priv->ibss_beacon)
774 dev_kfree_skb(priv->ibss_beacon);
775
776 priv->ibss_beacon = beacon;
777 mutex_unlock(&priv->mutex);
778
779 iwl_send_beacon_cmd(priv);
780 }
781
782 /**
783 * iwl_bg_statistics_periodic - Timer callback to queue statistics
784 *
785 * This callback is provided in order to send a statistics request.
786 *
787 * This timer function is continually reset to execute within
788 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
789 * was received. We need to ensure we receive the statistics in order
790 * to update the temperature used for calibrating the TXPOWER.
791 */
792 static void iwl_bg_statistics_periodic(unsigned long data)
793 {
794 struct iwl_priv *priv = (struct iwl_priv *)data;
795
796 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
797 return;
798
799 /* dont send host command if rf-kill is on */
800 if (!iwl_is_ready_rf(priv))
801 return;
802
803 iwl_send_statistics_request(priv, CMD_ASYNC);
804 }
805
806 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
807 struct iwl_rx_mem_buffer *rxb)
808 {
809 #ifdef CONFIG_IWLWIFI_DEBUG
810 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
811 struct iwl4965_beacon_notif *beacon =
812 (struct iwl4965_beacon_notif *)pkt->u.raw;
813 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
814
815 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
816 "tsf %d %d rate %d\n",
817 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
818 beacon->beacon_notify_hdr.failure_frame,
819 le32_to_cpu(beacon->ibss_mgr_status),
820 le32_to_cpu(beacon->high_tsf),
821 le32_to_cpu(beacon->low_tsf), rate);
822 #endif
823
824 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
825 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
826 queue_work(priv->workqueue, &priv->beacon_update);
827 }
828
829 /* Handle notification from uCode that card's power state is changing
830 * due to software, hardware, or critical temperature RFKILL */
831 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
832 struct iwl_rx_mem_buffer *rxb)
833 {
834 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
835 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
836 unsigned long status = priv->status;
837
838 IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s\n",
839 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
840 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
841
842 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
843 RF_CARD_DISABLED)) {
844
845 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
846 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
847
848 if (!iwl_grab_nic_access(priv)) {
849 iwl_write_direct32(
850 priv, HBUS_TARG_MBX_C,
851 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
852
853 iwl_release_nic_access(priv);
854 }
855
856 if (!(flags & RXON_CARD_DISABLED)) {
857 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
858 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
859 if (!iwl_grab_nic_access(priv)) {
860 iwl_write_direct32(
861 priv, HBUS_TARG_MBX_C,
862 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
863
864 iwl_release_nic_access(priv);
865 }
866 }
867
868 if (flags & RF_CARD_DISABLED) {
869 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
870 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
871 iwl_read32(priv, CSR_UCODE_DRV_GP1);
872 if (!iwl_grab_nic_access(priv))
873 iwl_release_nic_access(priv);
874 }
875 }
876
877 if (flags & HW_CARD_DISABLED)
878 set_bit(STATUS_RF_KILL_HW, &priv->status);
879 else
880 clear_bit(STATUS_RF_KILL_HW, &priv->status);
881
882
883 if (flags & SW_CARD_DISABLED)
884 set_bit(STATUS_RF_KILL_SW, &priv->status);
885 else
886 clear_bit(STATUS_RF_KILL_SW, &priv->status);
887
888 if (!(flags & RXON_CARD_DISABLED))
889 iwl_scan_cancel(priv);
890
891 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
892 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
893 (test_bit(STATUS_RF_KILL_SW, &status) !=
894 test_bit(STATUS_RF_KILL_SW, &priv->status)))
895 queue_work(priv->workqueue, &priv->rf_kill);
896 else
897 wake_up_interruptible(&priv->wait_command_queue);
898 }
899
900 int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
901 {
902 int ret;
903 unsigned long flags;
904
905 spin_lock_irqsave(&priv->lock, flags);
906 ret = iwl_grab_nic_access(priv);
907 if (ret)
908 goto err;
909
910 if (src == IWL_PWR_SRC_VAUX) {
911 if (pci_pme_capable(priv->pci_dev, PCI_D3cold))
912 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
913 APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
914 ~APMG_PS_CTRL_MSK_PWR_SRC);
915 } else {
916 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
917 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
918 ~APMG_PS_CTRL_MSK_PWR_SRC);
919 }
920
921 iwl_release_nic_access(priv);
922 err:
923 spin_unlock_irqrestore(&priv->lock, flags);
924 return ret;
925 }
926
927 /**
928 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
929 *
930 * Setup the RX handlers for each of the reply types sent from the uCode
931 * to the host.
932 *
933 * This function chains into the hardware specific files for them to setup
934 * any hardware specific handlers as well.
935 */
936 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
937 {
938 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
939 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
940 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
941 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
942 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
943 iwl_rx_pm_debug_statistics_notif;
944 priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
945
946 /*
947 * The same handler is used for both the REPLY to a discrete
948 * statistics request from the host as well as for the periodic
949 * statistics notifications (after received beacons) from the uCode.
950 */
951 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
952 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
953
954 iwl_setup_spectrum_handlers(priv);
955 iwl_setup_rx_scan_handlers(priv);
956
957 /* status change handler */
958 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
959
960 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
961 iwl_rx_missed_beacon_notif;
962 /* Rx handlers */
963 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
964 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
965 /* block ack */
966 priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
967 /* Set up hardware specific Rx handlers */
968 priv->cfg->ops->lib->rx_handler_setup(priv);
969 }
970
971 /**
972 * iwl_rx_handle - Main entry function for receiving responses from uCode
973 *
974 * Uses the priv->rx_handlers callback function array to invoke
975 * the appropriate handlers, including command responses,
976 * frame-received notifications, and other notifications.
977 */
978 void iwl_rx_handle(struct iwl_priv *priv)
979 {
980 struct iwl_rx_mem_buffer *rxb;
981 struct iwl_rx_packet *pkt;
982 struct iwl_rx_queue *rxq = &priv->rxq;
983 u32 r, i;
984 int reclaim;
985 unsigned long flags;
986 u8 fill_rx = 0;
987 u32 count = 8;
988
989 /* uCode's read index (stored in shared DRAM) indicates the last Rx
990 * buffer that the driver may process (last buffer filled by ucode). */
991 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
992 i = rxq->read;
993
994 /* Rx interrupt, but nothing sent from uCode */
995 if (i == r)
996 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
997
998 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
999 fill_rx = 1;
1000
1001 while (i != r) {
1002 rxb = rxq->queue[i];
1003
1004 /* If an RXB doesn't have a Rx queue slot associated with it,
1005 * then a bug has been introduced in the queue refilling
1006 * routines -- catch it here */
1007 BUG_ON(rxb == NULL);
1008
1009 rxq->queue[i] = NULL;
1010
1011 dma_sync_single_range_for_cpu(
1012 &priv->pci_dev->dev, rxb->real_dma_addr,
1013 rxb->aligned_dma_addr - rxb->real_dma_addr,
1014 priv->hw_params.rx_buf_size,
1015 PCI_DMA_FROMDEVICE);
1016 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1017
1018 /* Reclaim a command buffer only if this packet is a response
1019 * to a (driver-originated) command.
1020 * If the packet (e.g. Rx frame) originated from uCode,
1021 * there is no command buffer to reclaim.
1022 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1023 * but apparently a few don't get set; catch them here. */
1024 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1025 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1026 (pkt->hdr.cmd != REPLY_RX) &&
1027 (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
1028 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1029 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1030 (pkt->hdr.cmd != REPLY_TX);
1031
1032 /* Based on type of command response or notification,
1033 * handle those that need handling via function in
1034 * rx_handlers table. See iwl_setup_rx_handlers() */
1035 if (priv->rx_handlers[pkt->hdr.cmd]) {
1036 IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r,
1037 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1038 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1039 } else {
1040 /* No handling needed */
1041 IWL_DEBUG_RX(priv,
1042 "r %d i %d No handler needed for %s, 0x%02x\n",
1043 r, i, get_cmd_string(pkt->hdr.cmd),
1044 pkt->hdr.cmd);
1045 }
1046
1047 if (reclaim) {
1048 /* Invoke any callbacks, transfer the skb to caller, and
1049 * fire off the (possibly) blocking iwl_send_cmd()
1050 * as we reclaim the driver command queue */
1051 if (rxb && rxb->skb)
1052 iwl_tx_cmd_complete(priv, rxb);
1053 else
1054 IWL_WARN(priv, "Claim null rxb?\n");
1055 }
1056
1057 /* For now we just don't re-use anything. We can tweak this
1058 * later to try and re-use notification packets and SKBs that
1059 * fail to Rx correctly */
1060 if (rxb->skb != NULL) {
1061 priv->alloc_rxb_skb--;
1062 dev_kfree_skb_any(rxb->skb);
1063 rxb->skb = NULL;
1064 }
1065
1066 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
1067 priv->hw_params.rx_buf_size + 256,
1068 PCI_DMA_FROMDEVICE);
1069 spin_lock_irqsave(&rxq->lock, flags);
1070 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1071 spin_unlock_irqrestore(&rxq->lock, flags);
1072 i = (i + 1) & RX_QUEUE_MASK;
1073 /* If there are a lot of unused frames,
1074 * restock the Rx queue so ucode wont assert. */
1075 if (fill_rx) {
1076 count++;
1077 if (count >= 8) {
1078 priv->rxq.read = i;
1079 iwl_rx_queue_restock(priv);
1080 count = 0;
1081 }
1082 }
1083 }
1084
1085 /* Backtrack one entry */
1086 priv->rxq.read = i;
1087 iwl_rx_queue_restock(priv);
1088 }
1089
1090 /* call this function to flush any scheduled tasklet */
1091 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1092 {
1093 /* wait to make sure we flush pending tasklet*/
1094 synchronize_irq(priv->pci_dev->irq);
1095 tasklet_kill(&priv->irq_tasklet);
1096 }
1097
1098 static void iwl_error_recovery(struct iwl_priv *priv)
1099 {
1100 unsigned long flags;
1101
1102 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1103 sizeof(priv->staging_rxon));
1104 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1105 iwl_commit_rxon(priv);
1106
1107 iwl_rxon_add_station(priv, priv->bssid, 1);
1108
1109 spin_lock_irqsave(&priv->lock, flags);
1110 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1111 priv->error_recovering = 0;
1112 spin_unlock_irqrestore(&priv->lock, flags);
1113 }
1114
1115 static void iwl_irq_tasklet(struct iwl_priv *priv)
1116 {
1117 u32 inta, handled = 0;
1118 u32 inta_fh;
1119 unsigned long flags;
1120 #ifdef CONFIG_IWLWIFI_DEBUG
1121 u32 inta_mask;
1122 #endif
1123
1124 spin_lock_irqsave(&priv->lock, flags);
1125
1126 /* Ack/clear/reset pending uCode interrupts.
1127 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1128 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1129 inta = iwl_read32(priv, CSR_INT);
1130 iwl_write32(priv, CSR_INT, inta);
1131
1132 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1133 * Any new interrupts that happen after this, either while we're
1134 * in this tasklet, or later, will show up in next ISR/tasklet. */
1135 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1136 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1137
1138 #ifdef CONFIG_IWLWIFI_DEBUG
1139 if (priv->debug_level & IWL_DL_ISR) {
1140 /* just for debug */
1141 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1142 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1143 inta, inta_mask, inta_fh);
1144 }
1145 #endif
1146
1147 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1148 * atomic, make sure that inta covers all the interrupts that
1149 * we've discovered, even if FH interrupt came in just after
1150 * reading CSR_INT. */
1151 if (inta_fh & CSR49_FH_INT_RX_MASK)
1152 inta |= CSR_INT_BIT_FH_RX;
1153 if (inta_fh & CSR49_FH_INT_TX_MASK)
1154 inta |= CSR_INT_BIT_FH_TX;
1155
1156 /* Now service all interrupt bits discovered above. */
1157 if (inta & CSR_INT_BIT_HW_ERR) {
1158 IWL_ERR(priv, "Microcode HW error detected. Restarting.\n");
1159
1160 /* Tell the device to stop sending interrupts */
1161 iwl_disable_interrupts(priv);
1162
1163 iwl_irq_handle_error(priv);
1164
1165 handled |= CSR_INT_BIT_HW_ERR;
1166
1167 spin_unlock_irqrestore(&priv->lock, flags);
1168
1169 return;
1170 }
1171
1172 #ifdef CONFIG_IWLWIFI_DEBUG
1173 if (priv->debug_level & (IWL_DL_ISR)) {
1174 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1175 if (inta & CSR_INT_BIT_SCD)
1176 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1177 "the frame/frames.\n");
1178
1179 /* Alive notification via Rx interrupt will do the real work */
1180 if (inta & CSR_INT_BIT_ALIVE)
1181 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1182 }
1183 #endif
1184 /* Safely ignore these bits for debug checks below */
1185 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1186
1187 /* HW RF KILL switch toggled */
1188 if (inta & CSR_INT_BIT_RF_KILL) {
1189 int hw_rf_kill = 0;
1190 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1191 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1192 hw_rf_kill = 1;
1193
1194 IWL_DEBUG_RF_KILL(priv, "RF_KILL bit toggled to %s.\n",
1195 hw_rf_kill ? "disable radio" : "enable radio");
1196
1197 /* driver only loads ucode once setting the interface up.
1198 * the driver allows loading the ucode even if the radio
1199 * is killed. Hence update the killswitch state here. The
1200 * rfkill handler will care about restarting if needed.
1201 */
1202 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1203 if (hw_rf_kill)
1204 set_bit(STATUS_RF_KILL_HW, &priv->status);
1205 else
1206 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1207 queue_work(priv->workqueue, &priv->rf_kill);
1208 }
1209
1210 handled |= CSR_INT_BIT_RF_KILL;
1211 }
1212
1213 /* Chip got too hot and stopped itself */
1214 if (inta & CSR_INT_BIT_CT_KILL) {
1215 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1216 handled |= CSR_INT_BIT_CT_KILL;
1217 }
1218
1219 /* Error detected by uCode */
1220 if (inta & CSR_INT_BIT_SW_ERR) {
1221 IWL_ERR(priv, "Microcode SW error detected. "
1222 " Restarting 0x%X.\n", inta);
1223 iwl_irq_handle_error(priv);
1224 handled |= CSR_INT_BIT_SW_ERR;
1225 }
1226
1227 /* uCode wakes up after power-down sleep */
1228 if (inta & CSR_INT_BIT_WAKEUP) {
1229 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1230 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1231 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1232 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1233 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1234 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1235 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1236 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1237
1238 handled |= CSR_INT_BIT_WAKEUP;
1239 }
1240
1241 /* All uCode command responses, including Tx command responses,
1242 * Rx "responses" (frame-received notification), and other
1243 * notifications from uCode come through here*/
1244 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1245 iwl_rx_handle(priv);
1246 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1247 }
1248
1249 if (inta & CSR_INT_BIT_FH_TX) {
1250 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1251 handled |= CSR_INT_BIT_FH_TX;
1252 /* FH finished to write, send event */
1253 priv->ucode_write_complete = 1;
1254 wake_up_interruptible(&priv->wait_command_queue);
1255 }
1256
1257 if (inta & ~handled)
1258 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1259
1260 if (inta & ~CSR_INI_SET_MASK) {
1261 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1262 inta & ~CSR_INI_SET_MASK);
1263 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
1264 }
1265
1266 /* Re-enable all interrupts */
1267 /* only Re-enable if diabled by irq */
1268 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1269 iwl_enable_interrupts(priv);
1270
1271 #ifdef CONFIG_IWLWIFI_DEBUG
1272 if (priv->debug_level & (IWL_DL_ISR)) {
1273 inta = iwl_read32(priv, CSR_INT);
1274 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1275 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1276 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1277 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1278 }
1279 #endif
1280 spin_unlock_irqrestore(&priv->lock, flags);
1281 }
1282
1283 /******************************************************************************
1284 *
1285 * uCode download functions
1286 *
1287 ******************************************************************************/
1288
1289 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1290 {
1291 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1292 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1293 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1294 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1295 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1296 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1297 }
1298
1299 static void iwl_nic_start(struct iwl_priv *priv)
1300 {
1301 /* Remove all resets to allow NIC to operate */
1302 iwl_write32(priv, CSR_RESET, 0);
1303 }
1304
1305
1306 /**
1307 * iwl_read_ucode - Read uCode images from disk file.
1308 *
1309 * Copy into buffers for card to fetch via bus-mastering
1310 */
1311 static int iwl_read_ucode(struct iwl_priv *priv)
1312 {
1313 struct iwl_ucode *ucode;
1314 int ret = -EINVAL, index;
1315 const struct firmware *ucode_raw;
1316 const char *name_pre = priv->cfg->fw_name_pre;
1317 const unsigned int api_max = priv->cfg->ucode_api_max;
1318 const unsigned int api_min = priv->cfg->ucode_api_min;
1319 char buf[25];
1320 u8 *src;
1321 size_t len;
1322 u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
1323
1324 /* Ask kernel firmware_class module to get the boot firmware off disk.
1325 * request_firmware() is synchronous, file is in memory on return. */
1326 for (index = api_max; index >= api_min; index--) {
1327 sprintf(buf, "%s%d%s", name_pre, index, ".ucode");
1328 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
1329 if (ret < 0) {
1330 IWL_ERR(priv, "%s firmware file req failed: %d\n",
1331 buf, ret);
1332 if (ret == -ENOENT)
1333 continue;
1334 else
1335 goto error;
1336 } else {
1337 if (index < api_max)
1338 IWL_ERR(priv, "Loaded firmware %s, "
1339 "which is deprecated. "
1340 "Please use API v%u instead.\n",
1341 buf, api_max);
1342
1343 IWL_DEBUG_INFO(priv, "Got firmware '%s' file (%zd bytes) from disk\n",
1344 buf, ucode_raw->size);
1345 break;
1346 }
1347 }
1348
1349 if (ret < 0)
1350 goto error;
1351
1352 /* Make sure that we got at least our header! */
1353 if (ucode_raw->size < sizeof(*ucode)) {
1354 IWL_ERR(priv, "File size way too small!\n");
1355 ret = -EINVAL;
1356 goto err_release;
1357 }
1358
1359 /* Data from ucode file: header followed by uCode images */
1360 ucode = (void *)ucode_raw->data;
1361
1362 priv->ucode_ver = le32_to_cpu(ucode->ver);
1363 api_ver = IWL_UCODE_API(priv->ucode_ver);
1364 inst_size = le32_to_cpu(ucode->inst_size);
1365 data_size = le32_to_cpu(ucode->data_size);
1366 init_size = le32_to_cpu(ucode->init_size);
1367 init_data_size = le32_to_cpu(ucode->init_data_size);
1368 boot_size = le32_to_cpu(ucode->boot_size);
1369
1370 /* api_ver should match the api version forming part of the
1371 * firmware filename ... but we don't check for that and only rely
1372 * on the API version read from firware header from here on forward */
1373
1374 if (api_ver < api_min || api_ver > api_max) {
1375 IWL_ERR(priv, "Driver unable to support your firmware API. "
1376 "Driver supports v%u, firmware is v%u.\n",
1377 api_max, api_ver);
1378 priv->ucode_ver = 0;
1379 ret = -EINVAL;
1380 goto err_release;
1381 }
1382 if (api_ver != api_max)
1383 IWL_ERR(priv, "Firmware has old API version. Expected v%u, "
1384 "got v%u. New firmware can be obtained "
1385 "from http://www.intellinuxwireless.org.\n",
1386 api_max, api_ver);
1387
1388 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
1389 IWL_UCODE_MAJOR(priv->ucode_ver),
1390 IWL_UCODE_MINOR(priv->ucode_ver),
1391 IWL_UCODE_API(priv->ucode_ver),
1392 IWL_UCODE_SERIAL(priv->ucode_ver));
1393
1394 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1395 priv->ucode_ver);
1396 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
1397 inst_size);
1398 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
1399 data_size);
1400 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
1401 init_size);
1402 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
1403 init_data_size);
1404 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
1405 boot_size);
1406
1407 /* Verify size of file vs. image size info in file's header */
1408 if (ucode_raw->size < sizeof(*ucode) +
1409 inst_size + data_size + init_size +
1410 init_data_size + boot_size) {
1411
1412 IWL_DEBUG_INFO(priv, "uCode file size %d too small\n",
1413 (int)ucode_raw->size);
1414 ret = -EINVAL;
1415 goto err_release;
1416 }
1417
1418 /* Verify that uCode images will fit in card's SRAM */
1419 if (inst_size > priv->hw_params.max_inst_size) {
1420 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
1421 inst_size);
1422 ret = -EINVAL;
1423 goto err_release;
1424 }
1425
1426 if (data_size > priv->hw_params.max_data_size) {
1427 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
1428 data_size);
1429 ret = -EINVAL;
1430 goto err_release;
1431 }
1432 if (init_size > priv->hw_params.max_inst_size) {
1433 IWL_INFO(priv, "uCode init instr len %d too large to fit in\n",
1434 init_size);
1435 ret = -EINVAL;
1436 goto err_release;
1437 }
1438 if (init_data_size > priv->hw_params.max_data_size) {
1439 IWL_INFO(priv, "uCode init data len %d too large to fit in\n",
1440 init_data_size);
1441 ret = -EINVAL;
1442 goto err_release;
1443 }
1444 if (boot_size > priv->hw_params.max_bsm_size) {
1445 IWL_INFO(priv, "uCode boot instr len %d too large to fit in\n",
1446 boot_size);
1447 ret = -EINVAL;
1448 goto err_release;
1449 }
1450
1451 /* Allocate ucode buffers for card's bus-master loading ... */
1452
1453 /* Runtime instructions and 2 copies of data:
1454 * 1) unmodified from disk
1455 * 2) backup cache for save/restore during power-downs */
1456 priv->ucode_code.len = inst_size;
1457 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1458
1459 priv->ucode_data.len = data_size;
1460 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1461
1462 priv->ucode_data_backup.len = data_size;
1463 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1464
1465 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
1466 !priv->ucode_data_backup.v_addr)
1467 goto err_pci_alloc;
1468
1469 /* Initialization instructions and data */
1470 if (init_size && init_data_size) {
1471 priv->ucode_init.len = init_size;
1472 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1473
1474 priv->ucode_init_data.len = init_data_size;
1475 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1476
1477 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1478 goto err_pci_alloc;
1479 }
1480
1481 /* Bootstrap (instructions only, no data) */
1482 if (boot_size) {
1483 priv->ucode_boot.len = boot_size;
1484 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1485
1486 if (!priv->ucode_boot.v_addr)
1487 goto err_pci_alloc;
1488 }
1489
1490 /* Copy images into buffers for card's bus-master reads ... */
1491
1492 /* Runtime instructions (first block of data in file) */
1493 src = &ucode->data[0];
1494 len = priv->ucode_code.len;
1495 IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode instr len %Zd\n", len);
1496 memcpy(priv->ucode_code.v_addr, src, len);
1497 IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1498 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1499
1500 /* Runtime data (2nd block)
1501 * NOTE: Copy into backup buffer will be done in iwl_up() */
1502 src = &ucode->data[inst_size];
1503 len = priv->ucode_data.len;
1504 IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode data len %Zd\n", len);
1505 memcpy(priv->ucode_data.v_addr, src, len);
1506 memcpy(priv->ucode_data_backup.v_addr, src, len);
1507
1508 /* Initialization instructions (3rd block) */
1509 if (init_size) {
1510 src = &ucode->data[inst_size + data_size];
1511 len = priv->ucode_init.len;
1512 IWL_DEBUG_INFO(priv, "Copying (but not loading) init instr len %Zd\n",
1513 len);
1514 memcpy(priv->ucode_init.v_addr, src, len);
1515 }
1516
1517 /* Initialization data (4th block) */
1518 if (init_data_size) {
1519 src = &ucode->data[inst_size + data_size + init_size];
1520 len = priv->ucode_init_data.len;
1521 IWL_DEBUG_INFO(priv, "Copying (but not loading) init data len %Zd\n",
1522 len);
1523 memcpy(priv->ucode_init_data.v_addr, src, len);
1524 }
1525
1526 /* Bootstrap instructions (5th block) */
1527 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1528 len = priv->ucode_boot.len;
1529 IWL_DEBUG_INFO(priv, "Copying (but not loading) boot instr len %Zd\n", len);
1530 memcpy(priv->ucode_boot.v_addr, src, len);
1531
1532 /* We have our copies now, allow OS release its copies */
1533 release_firmware(ucode_raw);
1534 return 0;
1535
1536 err_pci_alloc:
1537 IWL_ERR(priv, "failed to allocate pci memory\n");
1538 ret = -ENOMEM;
1539 iwl_dealloc_ucode_pci(priv);
1540
1541 err_release:
1542 release_firmware(ucode_raw);
1543
1544 error:
1545 return ret;
1546 }
1547
1548 /* temporary */
1549 static int iwl_mac_beacon_update(struct ieee80211_hw *hw,
1550 struct sk_buff *skb);
1551
1552 /**
1553 * iwl_alive_start - called after REPLY_ALIVE notification received
1554 * from protocol/runtime uCode (initialization uCode's
1555 * Alive gets handled by iwl_init_alive_start()).
1556 */
1557 static void iwl_alive_start(struct iwl_priv *priv)
1558 {
1559 int ret = 0;
1560
1561 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1562
1563 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1564 /* We had an error bringing up the hardware, so take it
1565 * all the way back down so we can try again */
1566 IWL_DEBUG_INFO(priv, "Alive failed.\n");
1567 goto restart;
1568 }
1569
1570 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1571 * This is a paranoid check, because we would not have gotten the
1572 * "runtime" alive if code weren't properly loaded. */
1573 if (iwl_verify_ucode(priv)) {
1574 /* Runtime instruction load was bad;
1575 * take it all the way back down so we can try again */
1576 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
1577 goto restart;
1578 }
1579
1580 iwl_clear_stations_table(priv);
1581 ret = priv->cfg->ops->lib->alive_notify(priv);
1582 if (ret) {
1583 IWL_WARN(priv,
1584 "Could not complete ALIVE transition [ntf]: %d\n", ret);
1585 goto restart;
1586 }
1587
1588 /* After the ALIVE response, we can send host commands to the uCode */
1589 set_bit(STATUS_ALIVE, &priv->status);
1590
1591 if (iwl_is_rfkill(priv))
1592 return;
1593
1594 ieee80211_wake_queues(priv->hw);
1595
1596 priv->active_rate = priv->rates_mask;
1597 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1598
1599 if (iwl_is_associated(priv)) {
1600 struct iwl_rxon_cmd *active_rxon =
1601 (struct iwl_rxon_cmd *)&priv->active_rxon;
1602
1603 memcpy(&priv->staging_rxon, &priv->active_rxon,
1604 sizeof(priv->staging_rxon));
1605 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1606 } else {
1607 /* Initialize our rx_config data */
1608 iwl_connection_init_rx_config(priv, priv->iw_mode);
1609 iwl_set_rxon_chain(priv);
1610 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1611 }
1612
1613 /* Configure Bluetooth device coexistence support */
1614 iwl_send_bt_config(priv);
1615
1616 iwl_reset_run_time_calib(priv);
1617
1618 /* Configure the adapter for unassociated operation */
1619 iwl_commit_rxon(priv);
1620
1621 /* At this point, the NIC is initialized and operational */
1622 iwl_rf_kill_ct_config(priv);
1623
1624 iwl_leds_register(priv);
1625
1626 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
1627 set_bit(STATUS_READY, &priv->status);
1628 wake_up_interruptible(&priv->wait_command_queue);
1629
1630 if (priv->error_recovering)
1631 iwl_error_recovery(priv);
1632
1633 iwl_power_update_mode(priv, 1);
1634
1635 /* reassociate for ADHOC mode */
1636 if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
1637 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
1638 priv->vif);
1639 if (beacon)
1640 iwl_mac_beacon_update(priv->hw, beacon);
1641 }
1642
1643
1644 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
1645 iwl_set_mode(priv, priv->iw_mode);
1646
1647 return;
1648
1649 restart:
1650 queue_work(priv->workqueue, &priv->restart);
1651 }
1652
1653 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1654
1655 static void __iwl_down(struct iwl_priv *priv)
1656 {
1657 unsigned long flags;
1658 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
1659
1660 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
1661
1662 if (!exit_pending)
1663 set_bit(STATUS_EXIT_PENDING, &priv->status);
1664
1665 iwl_leds_unregister(priv);
1666
1667 iwl_clear_stations_table(priv);
1668
1669 /* Unblock any waiting calls */
1670 wake_up_interruptible_all(&priv->wait_command_queue);
1671
1672 /* Wipe out the EXIT_PENDING status bit if we are not actually
1673 * exiting the module */
1674 if (!exit_pending)
1675 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1676
1677 /* stop and reset the on-board processor */
1678 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
1679
1680 /* tell the device to stop sending interrupts */
1681 spin_lock_irqsave(&priv->lock, flags);
1682 iwl_disable_interrupts(priv);
1683 spin_unlock_irqrestore(&priv->lock, flags);
1684 iwl_synchronize_irq(priv);
1685
1686 if (priv->mac80211_registered)
1687 ieee80211_stop_queues(priv->hw);
1688
1689 /* If we have not previously called iwl_init() then
1690 * clear all bits but the RF Kill and SUSPEND bits and return */
1691 if (!iwl_is_init(priv)) {
1692 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1693 STATUS_RF_KILL_HW |
1694 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
1695 STATUS_RF_KILL_SW |
1696 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1697 STATUS_GEO_CONFIGURED |
1698 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
1699 STATUS_IN_SUSPEND |
1700 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1701 STATUS_EXIT_PENDING;
1702 goto exit;
1703 }
1704
1705 /* ...otherwise clear out all the status bits but the RF Kill and
1706 * SUSPEND bits and continue taking the NIC down. */
1707 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1708 STATUS_RF_KILL_HW |
1709 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
1710 STATUS_RF_KILL_SW |
1711 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1712 STATUS_GEO_CONFIGURED |
1713 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
1714 STATUS_IN_SUSPEND |
1715 test_bit(STATUS_FW_ERROR, &priv->status) <<
1716 STATUS_FW_ERROR |
1717 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1718 STATUS_EXIT_PENDING;
1719
1720 spin_lock_irqsave(&priv->lock, flags);
1721 iwl_clear_bit(priv, CSR_GP_CNTRL,
1722 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
1723 spin_unlock_irqrestore(&priv->lock, flags);
1724
1725 iwl_txq_ctx_stop(priv);
1726 iwl_rxq_stop(priv);
1727
1728 spin_lock_irqsave(&priv->lock, flags);
1729 if (!iwl_grab_nic_access(priv)) {
1730 iwl_write_prph(priv, APMG_CLK_DIS_REG,
1731 APMG_CLK_VAL_DMA_CLK_RQT);
1732 iwl_release_nic_access(priv);
1733 }
1734 spin_unlock_irqrestore(&priv->lock, flags);
1735
1736 udelay(5);
1737
1738 /* FIXME: apm_ops.suspend(priv) */
1739 if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
1740 priv->cfg->ops->lib->apm_ops.stop(priv);
1741 else
1742 priv->cfg->ops->lib->apm_ops.reset(priv);
1743 exit:
1744 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
1745
1746 if (priv->ibss_beacon)
1747 dev_kfree_skb(priv->ibss_beacon);
1748 priv->ibss_beacon = NULL;
1749
1750 /* clear out any free frames */
1751 iwl_clear_free_frames(priv);
1752 }
1753
1754 static void iwl_down(struct iwl_priv *priv)
1755 {
1756 mutex_lock(&priv->mutex);
1757 __iwl_down(priv);
1758 mutex_unlock(&priv->mutex);
1759
1760 iwl_cancel_deferred_work(priv);
1761 }
1762
1763 #define MAX_HW_RESTARTS 5
1764
1765 static int __iwl_up(struct iwl_priv *priv)
1766 {
1767 int i;
1768 int ret;
1769
1770 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1771 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
1772 return -EIO;
1773 }
1774
1775 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
1776 IWL_ERR(priv, "ucode not available for device bringup\n");
1777 return -EIO;
1778 }
1779
1780 /* If platform's RF_KILL switch is NOT set to KILL */
1781 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
1782 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1783 else
1784 set_bit(STATUS_RF_KILL_HW, &priv->status);
1785
1786 if (iwl_is_rfkill(priv)) {
1787 iwl_enable_interrupts(priv);
1788 IWL_WARN(priv, "Radio disabled by %s RF Kill switch\n",
1789 test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
1790 return 0;
1791 }
1792
1793 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
1794
1795 ret = iwl_hw_nic_init(priv);
1796 if (ret) {
1797 IWL_ERR(priv, "Unable to init nic\n");
1798 return ret;
1799 }
1800
1801 /* make sure rfkill handshake bits are cleared */
1802 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1803 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1804 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1805
1806 /* clear (again), then enable host interrupts */
1807 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
1808 iwl_enable_interrupts(priv);
1809
1810 /* really make sure rfkill handshake bits are cleared */
1811 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1812 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1813
1814 /* Copy original ucode data image from disk into backup cache.
1815 * This will be used to initialize the on-board processor's
1816 * data SRAM for a clean start when the runtime program first loads. */
1817 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
1818 priv->ucode_data.len);
1819
1820 for (i = 0; i < MAX_HW_RESTARTS; i++) {
1821
1822 iwl_clear_stations_table(priv);
1823
1824 /* load bootstrap state machine,
1825 * load bootstrap program into processor's memory,
1826 * prepare to load the "initialize" uCode */
1827 ret = priv->cfg->ops->lib->load_ucode(priv);
1828
1829 if (ret) {
1830 IWL_ERR(priv, "Unable to set up bootstrap uCode: %d\n",
1831 ret);
1832 continue;
1833 }
1834
1835 /* Clear out the uCode error bit if it is set */
1836 clear_bit(STATUS_FW_ERROR, &priv->status);
1837
1838 /* start card; "initialize" will load runtime ucode */
1839 iwl_nic_start(priv);
1840
1841 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
1842
1843 return 0;
1844 }
1845
1846 set_bit(STATUS_EXIT_PENDING, &priv->status);
1847 __iwl_down(priv);
1848 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1849
1850 /* tried to restart and config the device for as long as our
1851 * patience could withstand */
1852 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
1853 return -EIO;
1854 }
1855
1856
1857 /*****************************************************************************
1858 *
1859 * Workqueue callbacks
1860 *
1861 *****************************************************************************/
1862
1863 static void iwl_bg_init_alive_start(struct work_struct *data)
1864 {
1865 struct iwl_priv *priv =
1866 container_of(data, struct iwl_priv, init_alive_start.work);
1867
1868 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1869 return;
1870
1871 mutex_lock(&priv->mutex);
1872 priv->cfg->ops->lib->init_alive_start(priv);
1873 mutex_unlock(&priv->mutex);
1874 }
1875
1876 static void iwl_bg_alive_start(struct work_struct *data)
1877 {
1878 struct iwl_priv *priv =
1879 container_of(data, struct iwl_priv, alive_start.work);
1880
1881 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1882 return;
1883
1884 mutex_lock(&priv->mutex);
1885 iwl_alive_start(priv);
1886 mutex_unlock(&priv->mutex);
1887 }
1888
1889 static void iwl_bg_run_time_calib_work(struct work_struct *work)
1890 {
1891 struct iwl_priv *priv = container_of(work, struct iwl_priv,
1892 run_time_calib_work);
1893
1894 mutex_lock(&priv->mutex);
1895
1896 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
1897 test_bit(STATUS_SCANNING, &priv->status)) {
1898 mutex_unlock(&priv->mutex);
1899 return;
1900 }
1901
1902 if (priv->start_calib) {
1903 iwl_chain_noise_calibration(priv, &priv->statistics);
1904
1905 iwl_sensitivity_calibration(priv, &priv->statistics);
1906 }
1907
1908 mutex_unlock(&priv->mutex);
1909 return;
1910 }
1911
1912 static void iwl_bg_up(struct work_struct *data)
1913 {
1914 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
1915
1916 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1917 return;
1918
1919 mutex_lock(&priv->mutex);
1920 __iwl_up(priv);
1921 mutex_unlock(&priv->mutex);
1922 iwl_rfkill_set_hw_state(priv);
1923 }
1924
1925 static void iwl_bg_restart(struct work_struct *data)
1926 {
1927 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
1928
1929 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1930 return;
1931
1932 iwl_down(priv);
1933 queue_work(priv->workqueue, &priv->up);
1934 }
1935
1936 static void iwl_bg_rx_replenish(struct work_struct *data)
1937 {
1938 struct iwl_priv *priv =
1939 container_of(data, struct iwl_priv, rx_replenish);
1940
1941 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1942 return;
1943
1944 mutex_lock(&priv->mutex);
1945 iwl_rx_replenish(priv);
1946 mutex_unlock(&priv->mutex);
1947 }
1948
1949 #define IWL_DELAY_NEXT_SCAN (HZ*2)
1950
1951 static void iwl_post_associate(struct iwl_priv *priv)
1952 {
1953 struct ieee80211_conf *conf = NULL;
1954 int ret = 0;
1955 unsigned long flags;
1956
1957 if (priv->iw_mode == NL80211_IFTYPE_AP) {
1958 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
1959 return;
1960 }
1961
1962 IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
1963 priv->assoc_id, priv->active_rxon.bssid_addr);
1964
1965
1966 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1967 return;
1968
1969
1970 if (!priv->vif || !priv->is_open)
1971 return;
1972
1973 iwl_power_cancel_timeout(priv);
1974 iwl_scan_cancel_timeout(priv, 200);
1975
1976 conf = ieee80211_get_hw_conf(priv->hw);
1977
1978 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1979 iwl_commit_rxon(priv);
1980
1981 iwl_setup_rxon_timing(priv);
1982 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
1983 sizeof(priv->rxon_timing), &priv->rxon_timing);
1984 if (ret)
1985 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
1986 "Attempting to continue.\n");
1987
1988 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
1989
1990 iwl_set_rxon_ht(priv, &priv->current_ht_config);
1991
1992 iwl_set_rxon_chain(priv);
1993 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
1994
1995 IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
1996 priv->assoc_id, priv->beacon_int);
1997
1998 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
1999 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2000 else
2001 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2002
2003 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2004 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2005 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2006 else
2007 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2008
2009 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2010 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2011
2012 }
2013
2014 iwl_commit_rxon(priv);
2015
2016 switch (priv->iw_mode) {
2017 case NL80211_IFTYPE_STATION:
2018 break;
2019
2020 case NL80211_IFTYPE_ADHOC:
2021
2022 /* assume default assoc id */
2023 priv->assoc_id = 1;
2024
2025 iwl_rxon_add_station(priv, priv->bssid, 0);
2026 iwl_send_beacon_cmd(priv);
2027
2028 break;
2029
2030 default:
2031 IWL_ERR(priv, "%s Should not be called in %d mode\n",
2032 __func__, priv->iw_mode);
2033 break;
2034 }
2035
2036 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2037 priv->assoc_station_added = 1;
2038
2039 spin_lock_irqsave(&priv->lock, flags);
2040 iwl_activate_qos(priv, 0);
2041 spin_unlock_irqrestore(&priv->lock, flags);
2042
2043 /* the chain noise calibration will enabled PM upon completion
2044 * If chain noise has already been run, then we need to enable
2045 * power management here */
2046 if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2047 iwl_power_enable_management(priv);
2048
2049 /* Enable Rx differential gain and sensitivity calibrations */
2050 iwl_chain_noise_reset(priv);
2051 priv->start_calib = 1;
2052
2053 }
2054
2055 /*****************************************************************************
2056 *
2057 * mac80211 entry point functions
2058 *
2059 *****************************************************************************/
2060
2061 #define UCODE_READY_TIMEOUT (4 * HZ)
2062
2063 static int iwl_mac_start(struct ieee80211_hw *hw)
2064 {
2065 struct iwl_priv *priv = hw->priv;
2066 int ret;
2067
2068 IWL_DEBUG_MAC80211(priv, "enter\n");
2069
2070 /* we should be verifying the device is ready to be opened */
2071 mutex_lock(&priv->mutex);
2072
2073 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2074 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2075 * ucode filename and max sizes are card-specific. */
2076
2077 if (!priv->ucode_code.len) {
2078 ret = iwl_read_ucode(priv);
2079 if (ret) {
2080 IWL_ERR(priv, "Could not read microcode: %d\n", ret);
2081 mutex_unlock(&priv->mutex);
2082 return ret;
2083 }
2084 }
2085
2086 ret = __iwl_up(priv);
2087
2088 mutex_unlock(&priv->mutex);
2089
2090 iwl_rfkill_set_hw_state(priv);
2091
2092 if (ret)
2093 return ret;
2094
2095 if (iwl_is_rfkill(priv))
2096 goto out;
2097
2098 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
2099
2100 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2101 return 0;
2102
2103 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2104 * mac80211 will not be run successfully. */
2105 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2106 test_bit(STATUS_READY, &priv->status),
2107 UCODE_READY_TIMEOUT);
2108 if (!ret) {
2109 if (!test_bit(STATUS_READY, &priv->status)) {
2110 IWL_ERR(priv, "START_ALIVE timeout after %dms.\n",
2111 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2112 return -ETIMEDOUT;
2113 }
2114 }
2115
2116 out:
2117 priv->is_open = 1;
2118 IWL_DEBUG_MAC80211(priv, "leave\n");
2119 return 0;
2120 }
2121
2122 static void iwl_mac_stop(struct ieee80211_hw *hw)
2123 {
2124 struct iwl_priv *priv = hw->priv;
2125
2126 IWL_DEBUG_MAC80211(priv, "enter\n");
2127
2128 if (!priv->is_open) {
2129 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
2130 return;
2131 }
2132
2133 priv->is_open = 0;
2134
2135 if (iwl_is_ready_rf(priv)) {
2136 /* stop mac, cancel any scan request and clear
2137 * RXON_FILTER_ASSOC_MSK BIT
2138 */
2139 mutex_lock(&priv->mutex);
2140 iwl_scan_cancel_timeout(priv, 100);
2141 mutex_unlock(&priv->mutex);
2142 }
2143
2144 iwl_down(priv);
2145
2146 flush_workqueue(priv->workqueue);
2147
2148 /* enable interrupts again in order to receive rfkill changes */
2149 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2150 iwl_enable_interrupts(priv);
2151
2152 IWL_DEBUG_MAC80211(priv, "leave\n");
2153 }
2154
2155 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2156 {
2157 struct iwl_priv *priv = hw->priv;
2158
2159 IWL_DEBUG_MACDUMP(priv, "enter\n");
2160
2161 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2162 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2163
2164 if (iwl_tx_skb(priv, skb))
2165 dev_kfree_skb_any(skb);
2166
2167 IWL_DEBUG_MACDUMP(priv, "leave\n");
2168 return NETDEV_TX_OK;
2169 }
2170
2171 static int iwl_mac_add_interface(struct ieee80211_hw *hw,
2172 struct ieee80211_if_init_conf *conf)
2173 {
2174 struct iwl_priv *priv = hw->priv;
2175 unsigned long flags;
2176
2177 IWL_DEBUG_MAC80211(priv, "enter: type %d\n", conf->type);
2178
2179 if (priv->vif) {
2180 IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
2181 return -EOPNOTSUPP;
2182 }
2183
2184 spin_lock_irqsave(&priv->lock, flags);
2185 priv->vif = conf->vif;
2186 priv->iw_mode = conf->type;
2187
2188 spin_unlock_irqrestore(&priv->lock, flags);
2189
2190 mutex_lock(&priv->mutex);
2191
2192 if (conf->mac_addr) {
2193 IWL_DEBUG_MAC80211(priv, "Set %pM\n", conf->mac_addr);
2194 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2195 }
2196
2197 if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2198 /* we are not ready, will run again when ready */
2199 set_bit(STATUS_MODE_PENDING, &priv->status);
2200
2201 mutex_unlock(&priv->mutex);
2202
2203 IWL_DEBUG_MAC80211(priv, "leave\n");
2204 return 0;
2205 }
2206
2207 /**
2208 * iwl_mac_config - mac80211 config callback
2209 *
2210 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2211 * be set inappropriately and the driver currently sets the hardware up to
2212 * use it whenever needed.
2213 */
2214 static int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2215 {
2216 struct iwl_priv *priv = hw->priv;
2217 const struct iwl_channel_info *ch_info;
2218 struct ieee80211_conf *conf = &hw->conf;
2219 unsigned long flags;
2220 int ret = 0;
2221 u16 channel;
2222
2223 mutex_lock(&priv->mutex);
2224 IWL_DEBUG_MAC80211(priv, "enter to channel %d\n", conf->channel->hw_value);
2225
2226 priv->current_ht_config.is_ht = conf_is_ht(conf);
2227
2228 if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2229 IWL_DEBUG_MAC80211(priv, "leave - RF-KILL - waiting for uCode\n");
2230 goto out;
2231 }
2232
2233 if (!conf->radio_enabled)
2234 iwl_radio_kill_sw_disable_radio(priv);
2235
2236 if (!iwl_is_ready(priv)) {
2237 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2238 ret = -EIO;
2239 goto out;
2240 }
2241
2242 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2243 test_bit(STATUS_SCANNING, &priv->status))) {
2244 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
2245 mutex_unlock(&priv->mutex);
2246 return 0;
2247 }
2248
2249 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2250 ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2251 if (!is_channel_valid(ch_info)) {
2252 IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
2253 ret = -EINVAL;
2254 goto out;
2255 }
2256
2257 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2258 !is_channel_ibss(ch_info)) {
2259 IWL_ERR(priv, "channel %d in band %d not IBSS channel\n",
2260 conf->channel->hw_value, conf->channel->band);
2261 ret = -EINVAL;
2262 goto out;
2263 }
2264
2265 spin_lock_irqsave(&priv->lock, flags);
2266
2267
2268 /* if we are switching from ht to 2.4 clear flags
2269 * from any ht related info since 2.4 does not
2270 * support ht */
2271 if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2272 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2273 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2274 #endif
2275 )
2276 priv->staging_rxon.flags = 0;
2277
2278 iwl_set_rxon_channel(priv, conf->channel);
2279
2280 iwl_set_flags_for_band(priv, conf->channel->band);
2281
2282 /* The list of supported rates and rate mask can be different
2283 * for each band; since the band may have changed, reset
2284 * the rate mask to what mac80211 lists */
2285 iwl_set_rate(priv);
2286
2287 spin_unlock_irqrestore(&priv->lock, flags);
2288
2289 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2290 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2291 iwl_hw_channel_switch(priv, conf->channel);
2292 goto out;
2293 }
2294 #endif
2295
2296 if (!conf->radio_enabled) {
2297 IWL_DEBUG_MAC80211(priv, "leave - radio disabled\n");
2298 goto out;
2299 }
2300
2301 if (iwl_is_rfkill(priv)) {
2302 IWL_DEBUG_MAC80211(priv, "leave - RF kill\n");
2303 ret = -EIO;
2304 goto out;
2305 }
2306
2307 if (conf->flags & IEEE80211_CONF_PS)
2308 ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
2309 else
2310 ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
2311 if (ret)
2312 IWL_DEBUG_MAC80211(priv, "Error setting power level\n");
2313
2314 IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
2315 priv->tx_power_user_lmt, conf->power_level);
2316
2317 iwl_set_tx_power(priv, conf->power_level, false);
2318
2319 iwl_set_rate(priv);
2320
2321 /* call to ensure that 4965 rx_chain is set properly in monitor mode */
2322 iwl_set_rxon_chain(priv);
2323
2324 if (memcmp(&priv->active_rxon,
2325 &priv->staging_rxon, sizeof(priv->staging_rxon)))
2326 iwl_commit_rxon(priv);
2327 else
2328 IWL_DEBUG_INFO(priv, "No re-sending same RXON configuration.\n");
2329
2330 IWL_DEBUG_MAC80211(priv, "leave\n");
2331
2332 out:
2333 mutex_unlock(&priv->mutex);
2334 return ret;
2335 }
2336
2337 static void iwl_config_ap(struct iwl_priv *priv)
2338 {
2339 int ret = 0;
2340 unsigned long flags;
2341
2342 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2343 return;
2344
2345 /* The following should be done only at AP bring up */
2346 if (!iwl_is_associated(priv)) {
2347
2348 /* RXON - unassoc (to set timing command) */
2349 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2350 iwl_commit_rxon(priv);
2351
2352 /* RXON Timing */
2353 iwl_setup_rxon_timing(priv);
2354 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2355 sizeof(priv->rxon_timing), &priv->rxon_timing);
2356 if (ret)
2357 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
2358 "Attempting to continue.\n");
2359
2360 iwl_set_rxon_chain(priv);
2361
2362 /* FIXME: what should be the assoc_id for AP? */
2363 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2364 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2365 priv->staging_rxon.flags |=
2366 RXON_FLG_SHORT_PREAMBLE_MSK;
2367 else
2368 priv->staging_rxon.flags &=
2369 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2370
2371 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2372 if (priv->assoc_capability &
2373 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2374 priv->staging_rxon.flags |=
2375 RXON_FLG_SHORT_SLOT_MSK;
2376 else
2377 priv->staging_rxon.flags &=
2378 ~RXON_FLG_SHORT_SLOT_MSK;
2379
2380 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2381 priv->staging_rxon.flags &=
2382 ~RXON_FLG_SHORT_SLOT_MSK;
2383 }
2384 /* restore RXON assoc */
2385 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2386 iwl_commit_rxon(priv);
2387 spin_lock_irqsave(&priv->lock, flags);
2388 iwl_activate_qos(priv, 1);
2389 spin_unlock_irqrestore(&priv->lock, flags);
2390 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2391 }
2392 iwl_send_beacon_cmd(priv);
2393
2394 /* FIXME - we need to add code here to detect a totally new
2395 * configuration, reset the AP, unassoc, rxon timing, assoc,
2396 * clear sta table, add BCAST sta... */
2397 }
2398
2399
2400 static int iwl_mac_config_interface(struct ieee80211_hw *hw,
2401 struct ieee80211_vif *vif,
2402 struct ieee80211_if_conf *conf)
2403 {
2404 struct iwl_priv *priv = hw->priv;
2405 int rc;
2406
2407 if (conf == NULL)
2408 return -EIO;
2409
2410 if (priv->vif != vif) {
2411 IWL_DEBUG_MAC80211(priv, "leave - priv->vif != vif\n");
2412 return 0;
2413 }
2414
2415 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2416 conf->changed & IEEE80211_IFCC_BEACON) {
2417 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2418 if (!beacon)
2419 return -ENOMEM;
2420 mutex_lock(&priv->mutex);
2421 rc = iwl_mac_beacon_update(hw, beacon);
2422 mutex_unlock(&priv->mutex);
2423 if (rc)
2424 return rc;
2425 }
2426
2427 if (!iwl_is_alive(priv))
2428 return -EAGAIN;
2429
2430 mutex_lock(&priv->mutex);
2431
2432 if (conf->bssid)
2433 IWL_DEBUG_MAC80211(priv, "bssid: %pM\n", conf->bssid);
2434
2435 /*
2436 * very dubious code was here; the probe filtering flag is never set:
2437 *
2438 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2439 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2440 */
2441
2442 if (priv->iw_mode == NL80211_IFTYPE_AP) {
2443 if (!conf->bssid) {
2444 conf->bssid = priv->mac_addr;
2445 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2446 IWL_DEBUG_MAC80211(priv, "bssid was set to: %pM\n",
2447 conf->bssid);
2448 }
2449 if (priv->ibss_beacon)
2450 dev_kfree_skb(priv->ibss_beacon);
2451
2452 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2453 }
2454
2455 if (iwl_is_rfkill(priv))
2456 goto done;
2457
2458 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2459 !is_multicast_ether_addr(conf->bssid)) {
2460 /* If there is currently a HW scan going on in the background
2461 * then we need to cancel it else the RXON below will fail. */
2462 if (iwl_scan_cancel_timeout(priv, 100)) {
2463 IWL_WARN(priv, "Aborted scan still in progress "
2464 "after 100ms\n");
2465 IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
2466 mutex_unlock(&priv->mutex);
2467 return -EAGAIN;
2468 }
2469 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2470
2471 /* TODO: Audit driver for usage of these members and see
2472 * if mac80211 deprecates them (priv->bssid looks like it
2473 * shouldn't be there, but I haven't scanned the IBSS code
2474 * to verify) - jpk */
2475 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2476
2477 if (priv->iw_mode == NL80211_IFTYPE_AP)
2478 iwl_config_ap(priv);
2479 else {
2480 rc = iwl_commit_rxon(priv);
2481 if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
2482 iwl_rxon_add_station(
2483 priv, priv->active_rxon.bssid_addr, 1);
2484 }
2485
2486 } else {
2487 iwl_scan_cancel_timeout(priv, 100);
2488 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2489 iwl_commit_rxon(priv);
2490 }
2491
2492 done:
2493 IWL_DEBUG_MAC80211(priv, "leave\n");
2494 mutex_unlock(&priv->mutex);
2495
2496 return 0;
2497 }
2498
2499 static void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2500 struct ieee80211_if_init_conf *conf)
2501 {
2502 struct iwl_priv *priv = hw->priv;
2503
2504 IWL_DEBUG_MAC80211(priv, "enter\n");
2505
2506 mutex_lock(&priv->mutex);
2507
2508 if (iwl_is_ready_rf(priv)) {
2509 iwl_scan_cancel_timeout(priv, 100);
2510 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2511 iwl_commit_rxon(priv);
2512 }
2513 if (priv->vif == conf->vif) {
2514 priv->vif = NULL;
2515 memset(priv->bssid, 0, ETH_ALEN);
2516 }
2517 mutex_unlock(&priv->mutex);
2518
2519 IWL_DEBUG_MAC80211(priv, "leave\n");
2520
2521 }
2522
2523 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2524 static void iwl_bss_info_changed(struct ieee80211_hw *hw,
2525 struct ieee80211_vif *vif,
2526 struct ieee80211_bss_conf *bss_conf,
2527 u32 changes)
2528 {
2529 struct iwl_priv *priv = hw->priv;
2530
2531 IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
2532
2533 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2534 IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
2535 bss_conf->use_short_preamble);
2536 if (bss_conf->use_short_preamble)
2537 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2538 else
2539 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2540 }
2541
2542 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2543 IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot);
2544 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2545 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2546 else
2547 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2548 }
2549
2550 if (changes & BSS_CHANGED_HT) {
2551 iwl_ht_conf(priv, bss_conf);
2552 iwl_set_rxon_chain(priv);
2553 }
2554
2555 if (changes & BSS_CHANGED_ASSOC) {
2556 IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
2557 /* This should never happen as this function should
2558 * never be called from interrupt context. */
2559 if (WARN_ON_ONCE(in_interrupt()))
2560 return;
2561 if (bss_conf->assoc) {
2562 priv->assoc_id = bss_conf->aid;
2563 priv->beacon_int = bss_conf->beacon_int;
2564 priv->power_data.dtim_period = bss_conf->dtim_period;
2565 priv->timestamp = bss_conf->timestamp;
2566 priv->assoc_capability = bss_conf->assoc_capability;
2567
2568 /* we have just associated, don't start scan too early
2569 * leave time for EAPOL exchange to complete
2570 */
2571 priv->next_scan_jiffies = jiffies +
2572 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2573 mutex_lock(&priv->mutex);
2574 iwl_post_associate(priv);
2575 mutex_unlock(&priv->mutex);
2576 } else {
2577 priv->assoc_id = 0;
2578 IWL_DEBUG_MAC80211(priv, "DISASSOC %d\n", bss_conf->assoc);
2579 }
2580 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2581 IWL_DEBUG_MAC80211(priv, "Associated Changes %d\n", changes);
2582 iwl_send_rxon_assoc(priv);
2583 }
2584
2585 }
2586
2587 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
2588 struct ieee80211_key_conf *keyconf, const u8 *addr,
2589 u32 iv32, u16 *phase1key)
2590 {
2591
2592 struct iwl_priv *priv = hw->priv;
2593 IWL_DEBUG_MAC80211(priv, "enter\n");
2594
2595 iwl_update_tkip_key(priv, keyconf, addr, iv32, phase1key);
2596
2597 IWL_DEBUG_MAC80211(priv, "leave\n");
2598 }
2599
2600 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2601 struct ieee80211_vif *vif,
2602 struct ieee80211_sta *sta,
2603 struct ieee80211_key_conf *key)
2604 {
2605 struct iwl_priv *priv = hw->priv;
2606 const u8 *addr;
2607 int ret;
2608 u8 sta_id;
2609 bool is_default_wep_key = false;
2610
2611 IWL_DEBUG_MAC80211(priv, "enter\n");
2612
2613 if (priv->hw_params.sw_crypto) {
2614 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
2615 return -EOPNOTSUPP;
2616 }
2617 addr = sta ? sta->addr : iwl_bcast_addr;
2618 sta_id = iwl_find_station(priv, addr);
2619 if (sta_id == IWL_INVALID_STATION) {
2620 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
2621 addr);
2622 return -EINVAL;
2623
2624 }
2625
2626 mutex_lock(&priv->mutex);
2627 iwl_scan_cancel_timeout(priv, 100);
2628 mutex_unlock(&priv->mutex);
2629
2630 /* If we are getting WEP group key and we didn't receive any key mapping
2631 * so far, we are in legacy wep mode (group key only), otherwise we are
2632 * in 1X mode.
2633 * In legacy wep mode, we use another host command to the uCode */
2634 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
2635 priv->iw_mode != NL80211_IFTYPE_AP) {
2636 if (cmd == SET_KEY)
2637 is_default_wep_key = !priv->key_mapping_key;
2638 else
2639 is_default_wep_key =
2640 (key->hw_key_idx == HW_KEY_DEFAULT);
2641 }
2642
2643 switch (cmd) {
2644 case SET_KEY:
2645 if (is_default_wep_key)
2646 ret = iwl_set_default_wep_key(priv, key);
2647 else
2648 ret = iwl_set_dynamic_key(priv, key, sta_id);
2649
2650 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
2651 break;
2652 case DISABLE_KEY:
2653 if (is_default_wep_key)
2654 ret = iwl_remove_default_wep_key(priv, key);
2655 else
2656 ret = iwl_remove_dynamic_key(priv, key, sta_id);
2657
2658 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
2659 break;
2660 default:
2661 ret = -EINVAL;
2662 }
2663
2664 IWL_DEBUG_MAC80211(priv, "leave\n");
2665
2666 return ret;
2667 }
2668
2669 static int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
2670 const struct ieee80211_tx_queue_params *params)
2671 {
2672 struct iwl_priv *priv = hw->priv;
2673 unsigned long flags;
2674 int q;
2675
2676 IWL_DEBUG_MAC80211(priv, "enter\n");
2677
2678 if (!iwl_is_ready_rf(priv)) {
2679 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2680 return -EIO;
2681 }
2682
2683 if (queue >= AC_NUM) {
2684 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
2685 return 0;
2686 }
2687
2688 q = AC_NUM - 1 - queue;
2689
2690 spin_lock_irqsave(&priv->lock, flags);
2691
2692 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
2693 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
2694 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
2695 priv->qos_data.def_qos_parm.ac[q].edca_txop =
2696 cpu_to_le16((params->txop * 32));
2697
2698 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
2699 priv->qos_data.qos_active = 1;
2700
2701 if (priv->iw_mode == NL80211_IFTYPE_AP)
2702 iwl_activate_qos(priv, 1);
2703 else if (priv->assoc_id && iwl_is_associated(priv))
2704 iwl_activate_qos(priv, 0);
2705
2706 spin_unlock_irqrestore(&priv->lock, flags);
2707
2708 IWL_DEBUG_MAC80211(priv, "leave\n");
2709 return 0;
2710 }
2711
2712 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
2713 enum ieee80211_ampdu_mlme_action action,
2714 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
2715 {
2716 struct iwl_priv *priv = hw->priv;
2717
2718 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
2719 sta->addr, tid);
2720
2721 if (!(priv->cfg->sku & IWL_SKU_N))
2722 return -EACCES;
2723
2724 switch (action) {
2725 case IEEE80211_AMPDU_RX_START:
2726 IWL_DEBUG_HT(priv, "start Rx\n");
2727 return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn);
2728 case IEEE80211_AMPDU_RX_STOP:
2729 IWL_DEBUG_HT(priv, "stop Rx\n");
2730 return iwl_sta_rx_agg_stop(priv, sta->addr, tid);
2731 case IEEE80211_AMPDU_TX_START:
2732 IWL_DEBUG_HT(priv, "start Tx\n");
2733 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
2734 case IEEE80211_AMPDU_TX_STOP:
2735 IWL_DEBUG_HT(priv, "stop Tx\n");
2736 return iwl_tx_agg_stop(priv, sta->addr, tid);
2737 default:
2738 IWL_DEBUG_HT(priv, "unknown\n");
2739 return -EINVAL;
2740 break;
2741 }
2742 return 0;
2743 }
2744
2745 static int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
2746 struct ieee80211_tx_queue_stats *stats)
2747 {
2748 struct iwl_priv *priv = hw->priv;
2749 int i, avail;
2750 struct iwl_tx_queue *txq;
2751 struct iwl_queue *q;
2752 unsigned long flags;
2753
2754 IWL_DEBUG_MAC80211(priv, "enter\n");
2755
2756 if (!iwl_is_ready_rf(priv)) {
2757 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2758 return -EIO;
2759 }
2760
2761 spin_lock_irqsave(&priv->lock, flags);
2762
2763 for (i = 0; i < AC_NUM; i++) {
2764 txq = &priv->txq[i];
2765 q = &txq->q;
2766 avail = iwl_queue_space(q);
2767
2768 stats[i].len = q->n_window - avail;
2769 stats[i].limit = q->n_window - q->high_mark;
2770 stats[i].count = q->n_window;
2771
2772 }
2773 spin_unlock_irqrestore(&priv->lock, flags);
2774
2775 IWL_DEBUG_MAC80211(priv, "leave\n");
2776
2777 return 0;
2778 }
2779
2780 static int iwl_mac_get_stats(struct ieee80211_hw *hw,
2781 struct ieee80211_low_level_stats *stats)
2782 {
2783 struct iwl_priv *priv = hw->priv;
2784
2785 priv = hw->priv;
2786 IWL_DEBUG_MAC80211(priv, "enter\n");
2787 IWL_DEBUG_MAC80211(priv, "leave\n");
2788
2789 return 0;
2790 }
2791
2792 static void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
2793 {
2794 struct iwl_priv *priv = hw->priv;
2795 unsigned long flags;
2796
2797 mutex_lock(&priv->mutex);
2798 IWL_DEBUG_MAC80211(priv, "enter\n");
2799
2800 spin_lock_irqsave(&priv->lock, flags);
2801 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
2802 spin_unlock_irqrestore(&priv->lock, flags);
2803
2804 iwl_reset_qos(priv);
2805
2806 spin_lock_irqsave(&priv->lock, flags);
2807 priv->assoc_id = 0;
2808 priv->assoc_capability = 0;
2809 priv->assoc_station_added = 0;
2810
2811 /* new association get rid of ibss beacon skb */
2812 if (priv->ibss_beacon)
2813 dev_kfree_skb(priv->ibss_beacon);
2814
2815 priv->ibss_beacon = NULL;
2816
2817 priv->beacon_int = priv->hw->conf.beacon_int;
2818 priv->timestamp = 0;
2819 if ((priv->iw_mode == NL80211_IFTYPE_STATION))
2820 priv->beacon_int = 0;
2821
2822 spin_unlock_irqrestore(&priv->lock, flags);
2823
2824 if (!iwl_is_ready_rf(priv)) {
2825 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2826 mutex_unlock(&priv->mutex);
2827 return;
2828 }
2829
2830 /* we are restarting association process
2831 * clear RXON_FILTER_ASSOC_MSK bit
2832 */
2833 if (priv->iw_mode != NL80211_IFTYPE_AP) {
2834 iwl_scan_cancel_timeout(priv, 100);
2835 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2836 iwl_commit_rxon(priv);
2837 }
2838
2839 iwl_power_update_mode(priv, 0);
2840
2841 /* Per mac80211.h: This is only used in IBSS mode... */
2842 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2843
2844 /* switch to CAM during association period.
2845 * the ucode will block any association/authentication
2846 * frome during assiciation period if it can not hear
2847 * the AP because of PM. the timer enable PM back is
2848 * association do not complete
2849 */
2850 if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
2851 IEEE80211_CHAN_RADAR))
2852 iwl_power_disable_management(priv, 3000);
2853
2854 IWL_DEBUG_MAC80211(priv, "leave - not in IBSS\n");
2855 mutex_unlock(&priv->mutex);
2856 return;
2857 }
2858
2859 iwl_set_rate(priv);
2860
2861 mutex_unlock(&priv->mutex);
2862
2863 IWL_DEBUG_MAC80211(priv, "leave\n");
2864 }
2865
2866 static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
2867 {
2868 struct iwl_priv *priv = hw->priv;
2869 unsigned long flags;
2870 __le64 timestamp;
2871
2872 IWL_DEBUG_MAC80211(priv, "enter\n");
2873
2874 if (!iwl_is_ready_rf(priv)) {
2875 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2876 return -EIO;
2877 }
2878
2879 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2880 IWL_DEBUG_MAC80211(priv, "leave - not IBSS\n");
2881 return -EIO;
2882 }
2883
2884 spin_lock_irqsave(&priv->lock, flags);
2885
2886 if (priv->ibss_beacon)
2887 dev_kfree_skb(priv->ibss_beacon);
2888
2889 priv->ibss_beacon = skb;
2890
2891 priv->assoc_id = 0;
2892 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
2893 priv->timestamp = le64_to_cpu(timestamp);
2894
2895 IWL_DEBUG_MAC80211(priv, "leave\n");
2896 spin_unlock_irqrestore(&priv->lock, flags);
2897
2898 iwl_reset_qos(priv);
2899
2900 iwl_post_associate(priv);
2901
2902
2903 return 0;
2904 }
2905
2906 /*****************************************************************************
2907 *
2908 * sysfs attributes
2909 *
2910 *****************************************************************************/
2911
2912 #ifdef CONFIG_IWLWIFI_DEBUG
2913
2914 /*
2915 * The following adds a new attribute to the sysfs representation
2916 * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
2917 * used for controlling the debug level.
2918 *
2919 * See the level definitions in iwl for details.
2920 */
2921
2922 static ssize_t show_debug_level(struct device *d,
2923 struct device_attribute *attr, char *buf)
2924 {
2925 struct iwl_priv *priv = d->driver_data;
2926
2927 return sprintf(buf, "0x%08X\n", priv->debug_level);
2928 }
2929 static ssize_t store_debug_level(struct device *d,
2930 struct device_attribute *attr,
2931 const char *buf, size_t count)
2932 {
2933 struct iwl_priv *priv = d->driver_data;
2934 unsigned long val;
2935 int ret;
2936
2937 ret = strict_strtoul(buf, 0, &val);
2938 if (ret)
2939 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
2940 else
2941 priv->debug_level = val;
2942
2943 return strnlen(buf, count);
2944 }
2945
2946 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
2947 show_debug_level, store_debug_level);
2948
2949
2950 #endif /* CONFIG_IWLWIFI_DEBUG */
2951
2952
2953 static ssize_t show_version(struct device *d,
2954 struct device_attribute *attr, char *buf)
2955 {
2956 struct iwl_priv *priv = d->driver_data;
2957 struct iwl_alive_resp *palive = &priv->card_alive;
2958 ssize_t pos = 0;
2959 u16 eeprom_ver;
2960
2961 if (palive->is_valid)
2962 pos += sprintf(buf + pos,
2963 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
2964 "fw type: 0x%01X 0x%01X\n",
2965 palive->ucode_major, palive->ucode_minor,
2966 palive->sw_rev[0], palive->sw_rev[1],
2967 palive->ver_type, palive->ver_subtype);
2968 else
2969 pos += sprintf(buf + pos, "fw not loaded\n");
2970
2971 if (priv->eeprom) {
2972 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
2973 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
2974 eeprom_ver);
2975 } else {
2976 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
2977 }
2978
2979 return pos;
2980 }
2981
2982 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
2983
2984 static ssize_t show_temperature(struct device *d,
2985 struct device_attribute *attr, char *buf)
2986 {
2987 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
2988
2989 if (!iwl_is_alive(priv))
2990 return -EAGAIN;
2991
2992 return sprintf(buf, "%d\n", priv->temperature);
2993 }
2994
2995 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
2996
2997 static ssize_t show_tx_power(struct device *d,
2998 struct device_attribute *attr, char *buf)
2999 {
3000 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3001
3002 if (!iwl_is_ready_rf(priv))
3003 return sprintf(buf, "off\n");
3004 else
3005 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3006 }
3007
3008 static ssize_t store_tx_power(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 int ret;
3015
3016 ret = strict_strtoul(buf, 10, &val);
3017 if (ret)
3018 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
3019 else
3020 iwl_set_tx_power(priv, val, false);
3021
3022 return count;
3023 }
3024
3025 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3026
3027 static ssize_t show_flags(struct device *d,
3028 struct device_attribute *attr, char *buf)
3029 {
3030 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3031
3032 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3033 }
3034
3035 static ssize_t store_flags(struct device *d,
3036 struct device_attribute *attr,
3037 const char *buf, size_t count)
3038 {
3039 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3040 unsigned long val;
3041 u32 flags;
3042 int ret = strict_strtoul(buf, 0, &val);
3043 if (ret)
3044 return ret;
3045 flags = (u32)val;
3046
3047 mutex_lock(&priv->mutex);
3048 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3049 /* Cancel any currently running scans... */
3050 if (iwl_scan_cancel_timeout(priv, 100))
3051 IWL_WARN(priv, "Could not cancel scan.\n");
3052 else {
3053 IWL_DEBUG_INFO(priv, "Commit rxon.flags = 0x%04X\n", flags);
3054 priv->staging_rxon.flags = cpu_to_le32(flags);
3055 iwl_commit_rxon(priv);
3056 }
3057 }
3058 mutex_unlock(&priv->mutex);
3059
3060 return count;
3061 }
3062
3063 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3064
3065 static ssize_t show_filter_flags(struct device *d,
3066 struct device_attribute *attr, char *buf)
3067 {
3068 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3069
3070 return sprintf(buf, "0x%04X\n",
3071 le32_to_cpu(priv->active_rxon.filter_flags));
3072 }
3073
3074 static ssize_t store_filter_flags(struct device *d,
3075 struct device_attribute *attr,
3076 const char *buf, size_t count)
3077 {
3078 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3079 unsigned long val;
3080 u32 filter_flags;
3081 int ret = strict_strtoul(buf, 0, &val);
3082 if (ret)
3083 return ret;
3084 filter_flags = (u32)val;
3085
3086 mutex_lock(&priv->mutex);
3087 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3088 /* Cancel any currently running scans... */
3089 if (iwl_scan_cancel_timeout(priv, 100))
3090 IWL_WARN(priv, "Could not cancel scan.\n");
3091 else {
3092 IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
3093 "0x%04X\n", filter_flags);
3094 priv->staging_rxon.filter_flags =
3095 cpu_to_le32(filter_flags);
3096 iwl_commit_rxon(priv);
3097 }
3098 }
3099 mutex_unlock(&priv->mutex);
3100
3101 return count;
3102 }
3103
3104 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3105 store_filter_flags);
3106
3107 static ssize_t store_power_level(struct device *d,
3108 struct device_attribute *attr,
3109 const char *buf, size_t count)
3110 {
3111 struct iwl_priv *priv = dev_get_drvdata(d);
3112 int ret;
3113 unsigned long mode;
3114
3115
3116 mutex_lock(&priv->mutex);
3117
3118 if (!iwl_is_ready(priv)) {
3119 ret = -EAGAIN;
3120 goto out;
3121 }
3122
3123 ret = strict_strtoul(buf, 10, &mode);
3124 if (ret)
3125 goto out;
3126
3127 ret = iwl_power_set_user_mode(priv, mode);
3128 if (ret) {
3129 IWL_DEBUG_MAC80211(priv, "failed setting power mode.\n");
3130 goto out;
3131 }
3132 ret = count;
3133
3134 out:
3135 mutex_unlock(&priv->mutex);
3136 return ret;
3137 }
3138
3139 static ssize_t show_power_level(struct device *d,
3140 struct device_attribute *attr, char *buf)
3141 {
3142 struct iwl_priv *priv = dev_get_drvdata(d);
3143 int mode = priv->power_data.user_power_setting;
3144 int system = priv->power_data.system_power_setting;
3145 int level = priv->power_data.power_mode;
3146 char *p = buf;
3147
3148 switch (system) {
3149 case IWL_POWER_SYS_AUTO:
3150 p += sprintf(p, "SYSTEM:auto");
3151 break;
3152 case IWL_POWER_SYS_AC:
3153 p += sprintf(p, "SYSTEM:ac");
3154 break;
3155 case IWL_POWER_SYS_BATTERY:
3156 p += sprintf(p, "SYSTEM:battery");
3157 break;
3158 }
3159
3160 p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO) ?
3161 "fixed" : "auto");
3162 p += sprintf(p, "\tINDEX:%d", level);
3163 p += sprintf(p, "\n");
3164 return p - buf + 1;
3165 }
3166
3167 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3168 store_power_level);
3169
3170
3171 static ssize_t show_statistics(struct device *d,
3172 struct device_attribute *attr, char *buf)
3173 {
3174 struct iwl_priv *priv = dev_get_drvdata(d);
3175 u32 size = sizeof(struct iwl_notif_statistics);
3176 u32 len = 0, ofs = 0;
3177 u8 *data = (u8 *)&priv->statistics;
3178 int rc = 0;
3179
3180 if (!iwl_is_alive(priv))
3181 return -EAGAIN;
3182
3183 mutex_lock(&priv->mutex);
3184 rc = iwl_send_statistics_request(priv, 0);
3185 mutex_unlock(&priv->mutex);
3186
3187 if (rc) {
3188 len = sprintf(buf,
3189 "Error sending statistics request: 0x%08X\n", rc);
3190 return len;
3191 }
3192
3193 while (size && (PAGE_SIZE - len)) {
3194 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3195 PAGE_SIZE - len, 1);
3196 len = strlen(buf);
3197 if (PAGE_SIZE - len)
3198 buf[len++] = '\n';
3199
3200 ofs += 16;
3201 size -= min(size, 16U);
3202 }
3203
3204 return len;
3205 }
3206
3207 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3208
3209
3210 /*****************************************************************************
3211 *
3212 * driver setup and teardown
3213 *
3214 *****************************************************************************/
3215
3216 static void iwl_setup_deferred_work(struct iwl_priv *priv)
3217 {
3218 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3219
3220 init_waitqueue_head(&priv->wait_command_queue);
3221
3222 INIT_WORK(&priv->up, iwl_bg_up);
3223 INIT_WORK(&priv->restart, iwl_bg_restart);
3224 INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
3225 INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
3226 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
3227 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
3228 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
3229 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
3230
3231 iwl_setup_scan_deferred_work(priv);
3232 iwl_setup_power_deferred_work(priv);
3233
3234 if (priv->cfg->ops->lib->setup_deferred_work)
3235 priv->cfg->ops->lib->setup_deferred_work(priv);
3236
3237 init_timer(&priv->statistics_periodic);
3238 priv->statistics_periodic.data = (unsigned long)priv;
3239 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3240
3241 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3242 iwl_irq_tasklet, (unsigned long)priv);
3243 }
3244
3245 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3246 {
3247 if (priv->cfg->ops->lib->cancel_deferred_work)
3248 priv->cfg->ops->lib->cancel_deferred_work(priv);
3249
3250 cancel_delayed_work_sync(&priv->init_alive_start);
3251 cancel_delayed_work(&priv->scan_check);
3252 cancel_delayed_work_sync(&priv->set_power_save);
3253 cancel_delayed_work(&priv->alive_start);
3254 cancel_work_sync(&priv->beacon_update);
3255 del_timer_sync(&priv->statistics_periodic);
3256 }
3257
3258 static struct attribute *iwl_sysfs_entries[] = {
3259 &dev_attr_flags.attr,
3260 &dev_attr_filter_flags.attr,
3261 &dev_attr_power_level.attr,
3262 &dev_attr_statistics.attr,
3263 &dev_attr_temperature.attr,
3264 &dev_attr_tx_power.attr,
3265 #ifdef CONFIG_IWLWIFI_DEBUG
3266 &dev_attr_debug_level.attr,
3267 #endif
3268 &dev_attr_version.attr,
3269
3270 NULL
3271 };
3272
3273 static struct attribute_group iwl_attribute_group = {
3274 .name = NULL, /* put in device directory */
3275 .attrs = iwl_sysfs_entries,
3276 };
3277
3278 static struct ieee80211_ops iwl_hw_ops = {
3279 .tx = iwl_mac_tx,
3280 .start = iwl_mac_start,
3281 .stop = iwl_mac_stop,
3282 .add_interface = iwl_mac_add_interface,
3283 .remove_interface = iwl_mac_remove_interface,
3284 .config = iwl_mac_config,
3285 .config_interface = iwl_mac_config_interface,
3286 .configure_filter = iwl_configure_filter,
3287 .set_key = iwl_mac_set_key,
3288 .update_tkip_key = iwl_mac_update_tkip_key,
3289 .get_stats = iwl_mac_get_stats,
3290 .get_tx_stats = iwl_mac_get_tx_stats,
3291 .conf_tx = iwl_mac_conf_tx,
3292 .reset_tsf = iwl_mac_reset_tsf,
3293 .bss_info_changed = iwl_bss_info_changed,
3294 .ampdu_action = iwl_mac_ampdu_action,
3295 .hw_scan = iwl_mac_hw_scan
3296 };
3297
3298 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3299 {
3300 int err = 0;
3301 struct iwl_priv *priv;
3302 struct ieee80211_hw *hw;
3303 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3304 unsigned long flags;
3305 u16 pci_cmd;
3306
3307 /************************
3308 * 1. Allocating HW data
3309 ************************/
3310
3311 /* Disabling hardware scan means that mac80211 will perform scans
3312 * "the hard way", rather than using device's scan. */
3313 if (cfg->mod_params->disable_hw_scan) {
3314 if (cfg->mod_params->debug & IWL_DL_INFO)
3315 dev_printk(KERN_DEBUG, &(pdev->dev),
3316 "Disabling hw_scan\n");
3317 iwl_hw_ops.hw_scan = NULL;
3318 }
3319
3320 hw = iwl_alloc_all(cfg, &iwl_hw_ops);
3321 if (!hw) {
3322 err = -ENOMEM;
3323 goto out;
3324 }
3325 priv = hw->priv;
3326 /* At this point both hw and priv are allocated. */
3327
3328 SET_IEEE80211_DEV(hw, &pdev->dev);
3329
3330 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3331 priv->cfg = cfg;
3332 priv->pci_dev = pdev;
3333
3334 #ifdef CONFIG_IWLWIFI_DEBUG
3335 priv->debug_level = priv->cfg->mod_params->debug;
3336 atomic_set(&priv->restrict_refcnt, 0);
3337 #endif
3338
3339 /**************************
3340 * 2. Initializing PCI bus
3341 **************************/
3342 if (pci_enable_device(pdev)) {
3343 err = -ENODEV;
3344 goto out_ieee80211_free_hw;
3345 }
3346
3347 pci_set_master(pdev);
3348
3349 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
3350 if (!err)
3351 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
3352 if (err) {
3353 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3354 if (!err)
3355 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3356 /* both attempts failed: */
3357 if (err) {
3358 IWL_WARN(priv, "No suitable DMA available.\n");
3359 goto out_pci_disable_device;
3360 }
3361 }
3362
3363 err = pci_request_regions(pdev, DRV_NAME);
3364 if (err)
3365 goto out_pci_disable_device;
3366
3367 pci_set_drvdata(pdev, priv);
3368
3369
3370 /***********************
3371 * 3. Read REV register
3372 ***********************/
3373 priv->hw_base = pci_iomap(pdev, 0, 0);
3374 if (!priv->hw_base) {
3375 err = -ENODEV;
3376 goto out_pci_release_regions;
3377 }
3378
3379 IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
3380 (unsigned long long) pci_resource_len(pdev, 0));
3381 IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
3382
3383 iwl_hw_detect(priv);
3384 IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s REV=0x%X\n",
3385 priv->cfg->name, priv->hw_rev);
3386
3387 /* We disable the RETRY_TIMEOUT register (0x41) to keep
3388 * PCI Tx retries from interfering with C3 CPU state */
3389 pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
3390
3391 /* amp init */
3392 err = priv->cfg->ops->lib->apm_ops.init(priv);
3393 if (err < 0) {
3394 IWL_DEBUG_INFO(priv, "Failed to init APMG\n");
3395 goto out_iounmap;
3396 }
3397 /*****************
3398 * 4. Read EEPROM
3399 *****************/
3400 /* Read the EEPROM */
3401 err = iwl_eeprom_init(priv);
3402 if (err) {
3403 IWL_ERR(priv, "Unable to init EEPROM\n");
3404 goto out_iounmap;
3405 }
3406 err = iwl_eeprom_check_version(priv);
3407 if (err)
3408 goto out_iounmap;
3409
3410 /* extract MAC Address */
3411 iwl_eeprom_get_mac(priv, priv->mac_addr);
3412 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
3413 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
3414
3415 /************************
3416 * 5. Setup HW constants
3417 ************************/
3418 if (iwl_set_hw_params(priv)) {
3419 IWL_ERR(priv, "failed to set hw parameters\n");
3420 goto out_free_eeprom;
3421 }
3422
3423 /*******************
3424 * 6. Setup priv
3425 *******************/
3426
3427 err = iwl_init_drv(priv);
3428 if (err)
3429 goto out_free_eeprom;
3430 /* At this point both hw and priv are initialized. */
3431
3432 /**********************************
3433 * 7. Initialize module parameters
3434 **********************************/
3435
3436 /* Disable radio (SW RF KILL) via parameter when loading driver */
3437 if (priv->cfg->mod_params->disable) {
3438 set_bit(STATUS_RF_KILL_SW, &priv->status);
3439 IWL_DEBUG_INFO(priv, "Radio disabled.\n");
3440 }
3441
3442 /********************
3443 * 8. Setup services
3444 ********************/
3445 spin_lock_irqsave(&priv->lock, flags);
3446 iwl_disable_interrupts(priv);
3447 spin_unlock_irqrestore(&priv->lock, flags);
3448
3449 pci_enable_msi(priv->pci_dev);
3450
3451 err = request_irq(priv->pci_dev->irq, iwl_isr, IRQF_SHARED,
3452 DRV_NAME, priv);
3453 if (err) {
3454 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
3455 goto out_disable_msi;
3456 }
3457 err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
3458 if (err) {
3459 IWL_ERR(priv, "failed to create sysfs device attributes\n");
3460 goto out_free_irq;
3461 }
3462
3463 iwl_setup_deferred_work(priv);
3464 iwl_setup_rx_handlers(priv);
3465
3466 /**********************************
3467 * 9. Setup and register mac80211
3468 **********************************/
3469
3470 /* enable interrupts if needed: hw bug w/a */
3471 pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
3472 if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
3473 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
3474 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
3475 }
3476
3477 iwl_enable_interrupts(priv);
3478
3479 err = iwl_setup_mac(priv);
3480 if (err)
3481 goto out_remove_sysfs;
3482
3483 err = iwl_dbgfs_register(priv, DRV_NAME);
3484 if (err)
3485 IWL_ERR(priv, "failed to create debugfs files\n");
3486
3487 /* If platform's RF_KILL switch is NOT set to KILL */
3488 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3489 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3490 else
3491 set_bit(STATUS_RF_KILL_HW, &priv->status);
3492
3493 err = iwl_rfkill_init(priv);
3494 if (err)
3495 IWL_ERR(priv, "Unable to initialize RFKILL system. "
3496 "Ignoring error: %d\n", err);
3497 else
3498 iwl_rfkill_set_hw_state(priv);
3499
3500 iwl_power_initialize(priv);
3501 return 0;
3502
3503 out_remove_sysfs:
3504 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3505 out_free_irq:
3506 free_irq(priv->pci_dev->irq, priv);
3507 out_disable_msi:
3508 pci_disable_msi(priv->pci_dev);
3509 iwl_uninit_drv(priv);
3510 out_free_eeprom:
3511 iwl_eeprom_free(priv);
3512 out_iounmap:
3513 pci_iounmap(pdev, priv->hw_base);
3514 out_pci_release_regions:
3515 pci_release_regions(pdev);
3516 pci_set_drvdata(pdev, NULL);
3517 out_pci_disable_device:
3518 pci_disable_device(pdev);
3519 out_ieee80211_free_hw:
3520 ieee80211_free_hw(priv->hw);
3521 out:
3522 return err;
3523 }
3524
3525 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
3526 {
3527 struct iwl_priv *priv = pci_get_drvdata(pdev);
3528 unsigned long flags;
3529
3530 if (!priv)
3531 return;
3532
3533 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
3534
3535 iwl_dbgfs_unregister(priv);
3536 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3537
3538 /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3539 * to be called and iwl_down since we are removing the device
3540 * we need to set STATUS_EXIT_PENDING bit.
3541 */
3542 set_bit(STATUS_EXIT_PENDING, &priv->status);
3543 if (priv->mac80211_registered) {
3544 ieee80211_unregister_hw(priv->hw);
3545 priv->mac80211_registered = 0;
3546 } else {
3547 iwl_down(priv);
3548 }
3549
3550 /* make sure we flush any pending irq or
3551 * tasklet for the driver
3552 */
3553 spin_lock_irqsave(&priv->lock, flags);
3554 iwl_disable_interrupts(priv);
3555 spin_unlock_irqrestore(&priv->lock, flags);
3556
3557 iwl_synchronize_irq(priv);
3558
3559 iwl_rfkill_unregister(priv);
3560 iwl_dealloc_ucode_pci(priv);
3561
3562 if (priv->rxq.bd)
3563 iwl_rx_queue_free(priv, &priv->rxq);
3564 iwl_hw_txq_ctx_free(priv);
3565
3566 iwl_clear_stations_table(priv);
3567 iwl_eeprom_free(priv);
3568
3569
3570 /*netif_stop_queue(dev); */
3571 flush_workqueue(priv->workqueue);
3572
3573 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3574 * priv->workqueue... so we can't take down the workqueue
3575 * until now... */
3576 destroy_workqueue(priv->workqueue);
3577 priv->workqueue = NULL;
3578
3579 free_irq(priv->pci_dev->irq, priv);
3580 pci_disable_msi(priv->pci_dev);
3581 pci_iounmap(pdev, priv->hw_base);
3582 pci_release_regions(pdev);
3583 pci_disable_device(pdev);
3584 pci_set_drvdata(pdev, NULL);
3585
3586 iwl_uninit_drv(priv);
3587
3588 if (priv->ibss_beacon)
3589 dev_kfree_skb(priv->ibss_beacon);
3590
3591 ieee80211_free_hw(priv->hw);
3592 }
3593
3594 #ifdef CONFIG_PM
3595
3596 static int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
3597 {
3598 struct iwl_priv *priv = pci_get_drvdata(pdev);
3599
3600 if (priv->is_open) {
3601 set_bit(STATUS_IN_SUSPEND, &priv->status);
3602 iwl_mac_stop(priv->hw);
3603 priv->is_open = 1;
3604 }
3605
3606 pci_save_state(pdev);
3607 pci_disable_device(pdev);
3608 pci_set_power_state(pdev, PCI_D3hot);
3609
3610 return 0;
3611 }
3612
3613 static int iwl_pci_resume(struct pci_dev *pdev)
3614 {
3615 struct iwl_priv *priv = pci_get_drvdata(pdev);
3616 int ret;
3617
3618 pci_set_power_state(pdev, PCI_D0);
3619 ret = pci_enable_device(pdev);
3620 if (ret)
3621 return ret;
3622 pci_restore_state(pdev);
3623 iwl_enable_interrupts(priv);
3624
3625 if (priv->is_open)
3626 iwl_mac_start(priv->hw);
3627
3628 clear_bit(STATUS_IN_SUSPEND, &priv->status);
3629 return 0;
3630 }
3631
3632 #endif /* CONFIG_PM */
3633
3634 /*****************************************************************************
3635 *
3636 * driver and module entry point
3637 *
3638 *****************************************************************************/
3639
3640 /* Hardware specific file defines the PCI IDs table for that hardware module */
3641 static struct pci_device_id iwl_hw_card_ids[] = {
3642 #ifdef CONFIG_IWL4965
3643 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
3644 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
3645 #endif /* CONFIG_IWL4965 */
3646 #ifdef CONFIG_IWL5000
3647 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
3648 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
3649 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
3650 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
3651 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
3652 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
3653 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
3654 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
3655 {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
3656 {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
3657 /* 5350 WiFi/WiMax */
3658 {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
3659 {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
3660 {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
3661 /* 5150 Wifi/WiMax */
3662 {IWL_PCI_DEVICE(0x423C, PCI_ANY_ID, iwl5150_agn_cfg)},
3663 {IWL_PCI_DEVICE(0x423D, PCI_ANY_ID, iwl5150_agn_cfg)},
3664 /* 6000/6050 Series */
3665 {IWL_PCI_DEVICE(0x0082, 0x1102, iwl6000_2ag_cfg)},
3666 {IWL_PCI_DEVICE(0x0085, 0x1112, iwl6000_2ag_cfg)},
3667 {IWL_PCI_DEVICE(0x0082, 0x1122, iwl6000_2ag_cfg)},
3668 {IWL_PCI_DEVICE(0x422B, PCI_ANY_ID, iwl6000_3agn_cfg)},
3669 {IWL_PCI_DEVICE(0x4238, PCI_ANY_ID, iwl6000_3agn_cfg)},
3670 {IWL_PCI_DEVICE(0x0082, PCI_ANY_ID, iwl6000_2agn_cfg)},
3671 {IWL_PCI_DEVICE(0x0085, PCI_ANY_ID, iwl6000_3agn_cfg)},
3672 {IWL_PCI_DEVICE(0x0086, PCI_ANY_ID, iwl6050_3agn_cfg)},
3673 {IWL_PCI_DEVICE(0x0087, PCI_ANY_ID, iwl6050_2agn_cfg)},
3674 {IWL_PCI_DEVICE(0x0088, PCI_ANY_ID, iwl6050_3agn_cfg)},
3675 {IWL_PCI_DEVICE(0x0089, PCI_ANY_ID, iwl6050_2agn_cfg)},
3676 /* 100 Series WiFi */
3677 {IWL_PCI_DEVICE(0x0083, PCI_ANY_ID, iwl100_bgn_cfg)},
3678 {IWL_PCI_DEVICE(0x0084, PCI_ANY_ID, iwl100_bgn_cfg)},
3679 #endif /* CONFIG_IWL5000 */
3680
3681 {0}
3682 };
3683 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
3684
3685 static struct pci_driver iwl_driver = {
3686 .name = DRV_NAME,
3687 .id_table = iwl_hw_card_ids,
3688 .probe = iwl_pci_probe,
3689 .remove = __devexit_p(iwl_pci_remove),
3690 #ifdef CONFIG_PM
3691 .suspend = iwl_pci_suspend,
3692 .resume = iwl_pci_resume,
3693 #endif
3694 };
3695
3696 static int __init iwl_init(void)
3697 {
3698
3699 int ret;
3700 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
3701 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
3702
3703 ret = iwlagn_rate_control_register();
3704 if (ret) {
3705 printk(KERN_ERR DRV_NAME
3706 "Unable to register rate control algorithm: %d\n", ret);
3707 return ret;
3708 }
3709
3710 ret = pci_register_driver(&iwl_driver);
3711 if (ret) {
3712 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
3713 goto error_register;
3714 }
3715
3716 return ret;
3717
3718 error_register:
3719 iwlagn_rate_control_unregister();
3720 return ret;
3721 }
3722
3723 static void __exit iwl_exit(void)
3724 {
3725 pci_unregister_driver(&iwl_driver);
3726 iwlagn_rate_control_unregister();
3727 }
3728
3729 module_exit(iwl_exit);
3730 module_init(iwl_init);
Linux kernel - Deliverables
This page took 0.105238 seconds and 6 git commands to generate.