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iwlwifi: clean up unused NL80211_IFTYPE_MONITOR for Monitor mode
[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 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 priv->cfg->ops->smgmt->clear_station_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 if (priv->cfg->ops->hcmd->set_rxon_chain)
250 priv->cfg->ops->hcmd->set_rxon_chain(priv);
251 iwlcore_commit_rxon(priv);
252 }
253
254 static void iwl_clear_free_frames(struct iwl_priv *priv)
255 {
256 struct list_head *element;
257
258 IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
259 priv->frames_count);
260
261 while (!list_empty(&priv->free_frames)) {
262 element = priv->free_frames.next;
263 list_del(element);
264 kfree(list_entry(element, struct iwl_frame, list));
265 priv->frames_count--;
266 }
267
268 if (priv->frames_count) {
269 IWL_WARN(priv, "%d frames still in use. Did we lose one?\n",
270 priv->frames_count);
271 priv->frames_count = 0;
272 }
273 }
274
275 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
276 {
277 struct iwl_frame *frame;
278 struct list_head *element;
279 if (list_empty(&priv->free_frames)) {
280 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
281 if (!frame) {
282 IWL_ERR(priv, "Could not allocate frame!\n");
283 return NULL;
284 }
285
286 priv->frames_count++;
287 return frame;
288 }
289
290 element = priv->free_frames.next;
291 list_del(element);
292 return list_entry(element, struct iwl_frame, list);
293 }
294
295 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
296 {
297 memset(frame, 0, sizeof(*frame));
298 list_add(&frame->list, &priv->free_frames);
299 }
300
301 static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
302 struct ieee80211_hdr *hdr,
303 int left)
304 {
305 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
306 ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
307 (priv->iw_mode != NL80211_IFTYPE_AP)))
308 return 0;
309
310 if (priv->ibss_beacon->len > left)
311 return 0;
312
313 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
314
315 return priv->ibss_beacon->len;
316 }
317
318 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv,
319 struct iwl_frame *frame, u8 rate)
320 {
321 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
322 unsigned int frame_size;
323
324 tx_beacon_cmd = &frame->u.beacon;
325 memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
326
327 tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
328 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
329
330 frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
331 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
332
333 BUG_ON(frame_size > MAX_MPDU_SIZE);
334 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
335
336 if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
337 tx_beacon_cmd->tx.rate_n_flags =
338 iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
339 else
340 tx_beacon_cmd->tx.rate_n_flags =
341 iwl_hw_set_rate_n_flags(rate, 0);
342
343 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
344 TX_CMD_FLG_TSF_MSK |
345 TX_CMD_FLG_STA_RATE_MSK;
346
347 return sizeof(*tx_beacon_cmd) + frame_size;
348 }
349 static int iwl_send_beacon_cmd(struct iwl_priv *priv)
350 {
351 struct iwl_frame *frame;
352 unsigned int frame_size;
353 int rc;
354 u8 rate;
355
356 frame = iwl_get_free_frame(priv);
357
358 if (!frame) {
359 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
360 "command.\n");
361 return -ENOMEM;
362 }
363
364 rate = iwl_rate_get_lowest_plcp(priv);
365
366 frame_size = iwl_hw_get_beacon_cmd(priv, frame, rate);
367
368 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
369 &frame->u.cmd[0]);
370
371 iwl_free_frame(priv, frame);
372
373 return rc;
374 }
375
376 static inline dma_addr_t iwl_tfd_tb_get_addr(struct iwl_tfd *tfd, u8 idx)
377 {
378 struct iwl_tfd_tb *tb = &tfd->tbs[idx];
379
380 dma_addr_t addr = get_unaligned_le32(&tb->lo);
381 if (sizeof(dma_addr_t) > sizeof(u32))
382 addr |=
383 ((dma_addr_t)(le16_to_cpu(tb->hi_n_len) & 0xF) << 16) << 16;
384
385 return addr;
386 }
387
388 static inline u16 iwl_tfd_tb_get_len(struct iwl_tfd *tfd, u8 idx)
389 {
390 struct iwl_tfd_tb *tb = &tfd->tbs[idx];
391
392 return le16_to_cpu(tb->hi_n_len) >> 4;
393 }
394
395 static inline void iwl_tfd_set_tb(struct iwl_tfd *tfd, u8 idx,
396 dma_addr_t addr, u16 len)
397 {
398 struct iwl_tfd_tb *tb = &tfd->tbs[idx];
399 u16 hi_n_len = len << 4;
400
401 put_unaligned_le32(addr, &tb->lo);
402 if (sizeof(dma_addr_t) > sizeof(u32))
403 hi_n_len |= ((addr >> 16) >> 16) & 0xF;
404
405 tb->hi_n_len = cpu_to_le16(hi_n_len);
406
407 tfd->num_tbs = idx + 1;
408 }
409
410 static inline u8 iwl_tfd_get_num_tbs(struct iwl_tfd *tfd)
411 {
412 return tfd->num_tbs & 0x1f;
413 }
414
415 /**
416 * iwl_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr]
417 * @priv - driver private data
418 * @txq - tx queue
419 *
420 * Does NOT advance any TFD circular buffer read/write indexes
421 * Does NOT free the TFD itself (which is within circular buffer)
422 */
423 void iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
424 {
425 struct iwl_tfd *tfd_tmp = (struct iwl_tfd *)txq->tfds;
426 struct iwl_tfd *tfd;
427 struct pci_dev *dev = priv->pci_dev;
428 int index = txq->q.read_ptr;
429 int i;
430 int num_tbs;
431
432 tfd = &tfd_tmp[index];
433
434 /* Sanity check on number of chunks */
435 num_tbs = iwl_tfd_get_num_tbs(tfd);
436
437 if (num_tbs >= IWL_NUM_OF_TBS) {
438 IWL_ERR(priv, "Too many chunks: %i\n", num_tbs);
439 /* @todo issue fatal error, it is quite serious situation */
440 return;
441 }
442
443 /* Unmap tx_cmd */
444 if (num_tbs)
445 pci_unmap_single(dev,
446 pci_unmap_addr(&txq->cmd[index]->meta, mapping),
447 pci_unmap_len(&txq->cmd[index]->meta, len),
448 PCI_DMA_BIDIRECTIONAL);
449
450 /* Unmap chunks, if any. */
451 for (i = 1; i < num_tbs; i++) {
452 pci_unmap_single(dev, iwl_tfd_tb_get_addr(tfd, i),
453 iwl_tfd_tb_get_len(tfd, i), PCI_DMA_TODEVICE);
454
455 if (txq->txb) {
456 dev_kfree_skb(txq->txb[txq->q.read_ptr].skb[i - 1]);
457 txq->txb[txq->q.read_ptr].skb[i - 1] = NULL;
458 }
459 }
460 }
461
462 int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
463 struct iwl_tx_queue *txq,
464 dma_addr_t addr, u16 len,
465 u8 reset, u8 pad)
466 {
467 struct iwl_queue *q;
468 struct iwl_tfd *tfd, *tfd_tmp;
469 u32 num_tbs;
470
471 q = &txq->q;
472 tfd_tmp = (struct iwl_tfd *)txq->tfds;
473 tfd = &tfd_tmp[q->write_ptr];
474
475 if (reset)
476 memset(tfd, 0, sizeof(*tfd));
477
478 num_tbs = iwl_tfd_get_num_tbs(tfd);
479
480 /* Each TFD can point to a maximum 20 Tx buffers */
481 if (num_tbs >= IWL_NUM_OF_TBS) {
482 IWL_ERR(priv, "Error can not send more than %d chunks\n",
483 IWL_NUM_OF_TBS);
484 return -EINVAL;
485 }
486
487 BUG_ON(addr & ~DMA_BIT_MASK(36));
488 if (unlikely(addr & ~IWL_TX_DMA_MASK))
489 IWL_ERR(priv, "Unaligned address = %llx\n",
490 (unsigned long long)addr);
491
492 iwl_tfd_set_tb(tfd, num_tbs, addr, len);
493
494 return 0;
495 }
496
497 /*
498 * Tell nic where to find circular buffer of Tx Frame Descriptors for
499 * given Tx queue, and enable the DMA channel used for that queue.
500 *
501 * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA
502 * channels supported in hardware.
503 */
504 int iwl_hw_tx_queue_init(struct iwl_priv *priv,
505 struct iwl_tx_queue *txq)
506 {
507 int ret;
508 unsigned long flags;
509 int txq_id = txq->q.id;
510
511 spin_lock_irqsave(&priv->lock, flags);
512 ret = iwl_grab_nic_access(priv);
513 if (ret) {
514 spin_unlock_irqrestore(&priv->lock, flags);
515 return ret;
516 }
517
518 /* Circular buffer (TFD queue in DRAM) physical base address */
519 iwl_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id),
520 txq->q.dma_addr >> 8);
521
522 iwl_release_nic_access(priv);
523 spin_unlock_irqrestore(&priv->lock, flags);
524
525 return 0;
526 }
527
528
529 /******************************************************************************
530 *
531 * Misc. internal state and helper functions
532 *
533 ******************************************************************************/
534
535 #define MAX_UCODE_BEACON_INTERVAL 4096
536
537 static u16 iwl_adjust_beacon_interval(u16 beacon_val)
538 {
539 u16 new_val = 0;
540 u16 beacon_factor = 0;
541
542 beacon_factor = (beacon_val + MAX_UCODE_BEACON_INTERVAL)
543 / MAX_UCODE_BEACON_INTERVAL;
544 new_val = beacon_val / beacon_factor;
545
546 if (!new_val)
547 new_val = MAX_UCODE_BEACON_INTERVAL;
548
549 return new_val;
550 }
551
552 static void iwl_setup_rxon_timing(struct iwl_priv *priv)
553 {
554 u64 tsf;
555 s32 interval_tm, rem;
556 unsigned long flags;
557 struct ieee80211_conf *conf = NULL;
558 u16 beacon_int = 0;
559
560 conf = ieee80211_get_hw_conf(priv->hw);
561
562 spin_lock_irqsave(&priv->lock, flags);
563 priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
564 priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
565
566 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
567 beacon_int = iwl_adjust_beacon_interval(priv->beacon_int);
568 priv->rxon_timing.atim_window = 0;
569 } else {
570 beacon_int = iwl_adjust_beacon_interval(conf->beacon_int);
571
572 /* TODO: we need to get atim_window from upper stack
573 * for now we set to 0 */
574 priv->rxon_timing.atim_window = 0;
575 }
576
577 priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
578
579 tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
580 interval_tm = beacon_int * 1024;
581 rem = do_div(tsf, interval_tm);
582 priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
583
584 spin_unlock_irqrestore(&priv->lock, flags);
585 IWL_DEBUG_ASSOC(priv, "beacon interval %d beacon timer %d beacon tim %d\n",
586 le16_to_cpu(priv->rxon_timing.beacon_interval),
587 le32_to_cpu(priv->rxon_timing.beacon_init_val),
588 le16_to_cpu(priv->rxon_timing.atim_window));
589 }
590
591 /******************************************************************************
592 *
593 * Generic RX handler implementations
594 *
595 ******************************************************************************/
596 static void iwl_rx_reply_alive(struct iwl_priv *priv,
597 struct iwl_rx_mem_buffer *rxb)
598 {
599 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
600 struct iwl_alive_resp *palive;
601 struct delayed_work *pwork;
602
603 palive = &pkt->u.alive_frame;
604
605 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
606 "0x%01X 0x%01X\n",
607 palive->is_valid, palive->ver_type,
608 palive->ver_subtype);
609
610 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
611 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
612 memcpy(&priv->card_alive_init,
613 &pkt->u.alive_frame,
614 sizeof(struct iwl_init_alive_resp));
615 pwork = &priv->init_alive_start;
616 } else {
617 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
618 memcpy(&priv->card_alive, &pkt->u.alive_frame,
619 sizeof(struct iwl_alive_resp));
620 pwork = &priv->alive_start;
621 }
622
623 /* We delay the ALIVE response by 5ms to
624 * give the HW RF Kill time to activate... */
625 if (palive->is_valid == UCODE_VALID_OK)
626 queue_delayed_work(priv->workqueue, pwork,
627 msecs_to_jiffies(5));
628 else
629 IWL_WARN(priv, "uCode did not respond OK.\n");
630 }
631
632 static void iwl_bg_beacon_update(struct work_struct *work)
633 {
634 struct iwl_priv *priv =
635 container_of(work, struct iwl_priv, beacon_update);
636 struct sk_buff *beacon;
637
638 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
639 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
640
641 if (!beacon) {
642 IWL_ERR(priv, "update beacon failed\n");
643 return;
644 }
645
646 mutex_lock(&priv->mutex);
647 /* new beacon skb is allocated every time; dispose previous.*/
648 if (priv->ibss_beacon)
649 dev_kfree_skb(priv->ibss_beacon);
650
651 priv->ibss_beacon = beacon;
652 mutex_unlock(&priv->mutex);
653
654 iwl_send_beacon_cmd(priv);
655 }
656
657 /**
658 * iwl_bg_statistics_periodic - Timer callback to queue statistics
659 *
660 * This callback is provided in order to send a statistics request.
661 *
662 * This timer function is continually reset to execute within
663 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
664 * was received. We need to ensure we receive the statistics in order
665 * to update the temperature used for calibrating the TXPOWER.
666 */
667 static void iwl_bg_statistics_periodic(unsigned long data)
668 {
669 struct iwl_priv *priv = (struct iwl_priv *)data;
670
671 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
672 return;
673
674 /* dont send host command if rf-kill is on */
675 if (!iwl_is_ready_rf(priv))
676 return;
677
678 iwl_send_statistics_request(priv, CMD_ASYNC);
679 }
680
681 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
682 struct iwl_rx_mem_buffer *rxb)
683 {
684 #ifdef CONFIG_IWLWIFI_DEBUG
685 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
686 struct iwl4965_beacon_notif *beacon =
687 (struct iwl4965_beacon_notif *)pkt->u.raw;
688 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
689
690 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
691 "tsf %d %d rate %d\n",
692 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
693 beacon->beacon_notify_hdr.failure_frame,
694 le32_to_cpu(beacon->ibss_mgr_status),
695 le32_to_cpu(beacon->high_tsf),
696 le32_to_cpu(beacon->low_tsf), rate);
697 #endif
698
699 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
700 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
701 queue_work(priv->workqueue, &priv->beacon_update);
702 }
703
704 /* Handle notification from uCode that card's power state is changing
705 * due to software, hardware, or critical temperature RFKILL */
706 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
707 struct iwl_rx_mem_buffer *rxb)
708 {
709 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
710 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
711 unsigned long status = priv->status;
712
713 IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s\n",
714 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
715 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
716
717 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
718 RF_CARD_DISABLED)) {
719
720 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
721 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
722
723 if (!iwl_grab_nic_access(priv)) {
724 iwl_write_direct32(
725 priv, HBUS_TARG_MBX_C,
726 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
727
728 iwl_release_nic_access(priv);
729 }
730
731 if (!(flags & RXON_CARD_DISABLED)) {
732 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
733 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
734 if (!iwl_grab_nic_access(priv)) {
735 iwl_write_direct32(
736 priv, HBUS_TARG_MBX_C,
737 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
738
739 iwl_release_nic_access(priv);
740 }
741 }
742
743 if (flags & RF_CARD_DISABLED) {
744 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
745 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
746 iwl_read32(priv, CSR_UCODE_DRV_GP1);
747 if (!iwl_grab_nic_access(priv))
748 iwl_release_nic_access(priv);
749 }
750 }
751
752 if (flags & HW_CARD_DISABLED)
753 set_bit(STATUS_RF_KILL_HW, &priv->status);
754 else
755 clear_bit(STATUS_RF_KILL_HW, &priv->status);
756
757
758 if (flags & SW_CARD_DISABLED)
759 set_bit(STATUS_RF_KILL_SW, &priv->status);
760 else
761 clear_bit(STATUS_RF_KILL_SW, &priv->status);
762
763 if (!(flags & RXON_CARD_DISABLED))
764 iwl_scan_cancel(priv);
765
766 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
767 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
768 (test_bit(STATUS_RF_KILL_SW, &status) !=
769 test_bit(STATUS_RF_KILL_SW, &priv->status)))
770 queue_work(priv->workqueue, &priv->rf_kill);
771 else
772 wake_up_interruptible(&priv->wait_command_queue);
773 }
774
775 int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
776 {
777 int ret;
778 unsigned long flags;
779
780 spin_lock_irqsave(&priv->lock, flags);
781 ret = iwl_grab_nic_access(priv);
782 if (ret)
783 goto err;
784
785 if (src == IWL_PWR_SRC_VAUX) {
786 if (pci_pme_capable(priv->pci_dev, PCI_D3cold))
787 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
788 APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
789 ~APMG_PS_CTRL_MSK_PWR_SRC);
790 } else {
791 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
792 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
793 ~APMG_PS_CTRL_MSK_PWR_SRC);
794 }
795
796 iwl_release_nic_access(priv);
797 err:
798 spin_unlock_irqrestore(&priv->lock, flags);
799 return ret;
800 }
801
802 /**
803 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
804 *
805 * Setup the RX handlers for each of the reply types sent from the uCode
806 * to the host.
807 *
808 * This function chains into the hardware specific files for them to setup
809 * any hardware specific handlers as well.
810 */
811 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
812 {
813 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
814 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
815 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
816 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
817 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
818 iwl_rx_pm_debug_statistics_notif;
819 priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
820
821 /*
822 * The same handler is used for both the REPLY to a discrete
823 * statistics request from the host as well as for the periodic
824 * statistics notifications (after received beacons) from the uCode.
825 */
826 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
827 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
828
829 iwl_setup_spectrum_handlers(priv);
830 iwl_setup_rx_scan_handlers(priv);
831
832 /* status change handler */
833 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
834
835 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
836 iwl_rx_missed_beacon_notif;
837 /* Rx handlers */
838 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
839 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
840 /* block ack */
841 priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
842 /* Set up hardware specific Rx handlers */
843 priv->cfg->ops->lib->rx_handler_setup(priv);
844 }
845
846 /**
847 * iwl_rx_handle - Main entry function for receiving responses from uCode
848 *
849 * Uses the priv->rx_handlers callback function array to invoke
850 * the appropriate handlers, including command responses,
851 * frame-received notifications, and other notifications.
852 */
853 void iwl_rx_handle(struct iwl_priv *priv)
854 {
855 struct iwl_rx_mem_buffer *rxb;
856 struct iwl_rx_packet *pkt;
857 struct iwl_rx_queue *rxq = &priv->rxq;
858 u32 r, i;
859 int reclaim;
860 unsigned long flags;
861 u8 fill_rx = 0;
862 u32 count = 8;
863
864 /* uCode's read index (stored in shared DRAM) indicates the last Rx
865 * buffer that the driver may process (last buffer filled by ucode). */
866 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
867 i = rxq->read;
868
869 /* Rx interrupt, but nothing sent from uCode */
870 if (i == r)
871 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
872
873 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
874 fill_rx = 1;
875
876 while (i != r) {
877 rxb = rxq->queue[i];
878
879 /* If an RXB doesn't have a Rx queue slot associated with it,
880 * then a bug has been introduced in the queue refilling
881 * routines -- catch it here */
882 BUG_ON(rxb == NULL);
883
884 rxq->queue[i] = NULL;
885
886 dma_sync_single_range_for_cpu(
887 &priv->pci_dev->dev, rxb->real_dma_addr,
888 rxb->aligned_dma_addr - rxb->real_dma_addr,
889 priv->hw_params.rx_buf_size,
890 PCI_DMA_FROMDEVICE);
891 pkt = (struct iwl_rx_packet *)rxb->skb->data;
892
893 /* Reclaim a command buffer only if this packet is a response
894 * to a (driver-originated) command.
895 * If the packet (e.g. Rx frame) originated from uCode,
896 * there is no command buffer to reclaim.
897 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
898 * but apparently a few don't get set; catch them here. */
899 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
900 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
901 (pkt->hdr.cmd != REPLY_RX) &&
902 (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
903 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
904 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
905 (pkt->hdr.cmd != REPLY_TX);
906
907 /* Based on type of command response or notification,
908 * handle those that need handling via function in
909 * rx_handlers table. See iwl_setup_rx_handlers() */
910 if (priv->rx_handlers[pkt->hdr.cmd]) {
911 IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r,
912 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
913 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
914 priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
915 } else {
916 /* No handling needed */
917 IWL_DEBUG_RX(priv,
918 "r %d i %d No handler needed for %s, 0x%02x\n",
919 r, i, get_cmd_string(pkt->hdr.cmd),
920 pkt->hdr.cmd);
921 }
922
923 if (reclaim) {
924 /* Invoke any callbacks, transfer the skb to caller, and
925 * fire off the (possibly) blocking iwl_send_cmd()
926 * as we reclaim the driver command queue */
927 if (rxb && rxb->skb)
928 iwl_tx_cmd_complete(priv, rxb);
929 else
930 IWL_WARN(priv, "Claim null rxb?\n");
931 }
932
933 /* For now we just don't re-use anything. We can tweak this
934 * later to try and re-use notification packets and SKBs that
935 * fail to Rx correctly */
936 if (rxb->skb != NULL) {
937 priv->alloc_rxb_skb--;
938 dev_kfree_skb_any(rxb->skb);
939 rxb->skb = NULL;
940 }
941
942 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
943 priv->hw_params.rx_buf_size + 256,
944 PCI_DMA_FROMDEVICE);
945 spin_lock_irqsave(&rxq->lock, flags);
946 list_add_tail(&rxb->list, &priv->rxq.rx_used);
947 spin_unlock_irqrestore(&rxq->lock, flags);
948 i = (i + 1) & RX_QUEUE_MASK;
949 /* If there are a lot of unused frames,
950 * restock the Rx queue so ucode wont assert. */
951 if (fill_rx) {
952 count++;
953 if (count >= 8) {
954 priv->rxq.read = i;
955 iwl_rx_queue_restock(priv);
956 count = 0;
957 }
958 }
959 }
960
961 /* Backtrack one entry */
962 priv->rxq.read = i;
963 iwl_rx_queue_restock(priv);
964 }
965
966 /* call this function to flush any scheduled tasklet */
967 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
968 {
969 /* wait to make sure we flush pending tasklet*/
970 synchronize_irq(priv->pci_dev->irq);
971 tasklet_kill(&priv->irq_tasklet);
972 }
973
974 static void iwl_error_recovery(struct iwl_priv *priv)
975 {
976 unsigned long flags;
977
978 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
979 sizeof(priv->staging_rxon));
980 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
981 iwlcore_commit_rxon(priv);
982
983 iwl_rxon_add_station(priv, priv->bssid, 1);
984
985 spin_lock_irqsave(&priv->lock, flags);
986 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
987 priv->error_recovering = 0;
988 spin_unlock_irqrestore(&priv->lock, flags);
989 }
990
991 static void iwl_irq_tasklet(struct iwl_priv *priv)
992 {
993 u32 inta, handled = 0;
994 u32 inta_fh;
995 unsigned long flags;
996 #ifdef CONFIG_IWLWIFI_DEBUG
997 u32 inta_mask;
998 #endif
999
1000 spin_lock_irqsave(&priv->lock, flags);
1001
1002 /* Ack/clear/reset pending uCode interrupts.
1003 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1004 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1005 inta = iwl_read32(priv, CSR_INT);
1006 iwl_write32(priv, CSR_INT, inta);
1007
1008 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1009 * Any new interrupts that happen after this, either while we're
1010 * in this tasklet, or later, will show up in next ISR/tasklet. */
1011 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1012 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1013
1014 #ifdef CONFIG_IWLWIFI_DEBUG
1015 if (priv->debug_level & IWL_DL_ISR) {
1016 /* just for debug */
1017 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1018 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1019 inta, inta_mask, inta_fh);
1020 }
1021 #endif
1022
1023 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1024 * atomic, make sure that inta covers all the interrupts that
1025 * we've discovered, even if FH interrupt came in just after
1026 * reading CSR_INT. */
1027 if (inta_fh & CSR49_FH_INT_RX_MASK)
1028 inta |= CSR_INT_BIT_FH_RX;
1029 if (inta_fh & CSR49_FH_INT_TX_MASK)
1030 inta |= CSR_INT_BIT_FH_TX;
1031
1032 /* Now service all interrupt bits discovered above. */
1033 if (inta & CSR_INT_BIT_HW_ERR) {
1034 IWL_ERR(priv, "Microcode HW error detected. Restarting.\n");
1035
1036 /* Tell the device to stop sending interrupts */
1037 iwl_disable_interrupts(priv);
1038
1039 priv->isr_stats.hw++;
1040 iwl_irq_handle_error(priv);
1041
1042 handled |= CSR_INT_BIT_HW_ERR;
1043
1044 spin_unlock_irqrestore(&priv->lock, flags);
1045
1046 return;
1047 }
1048
1049 #ifdef CONFIG_IWLWIFI_DEBUG
1050 if (priv->debug_level & (IWL_DL_ISR)) {
1051 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1052 if (inta & CSR_INT_BIT_SCD) {
1053 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1054 "the frame/frames.\n");
1055 priv->isr_stats.sch++;
1056 }
1057
1058 /* Alive notification via Rx interrupt will do the real work */
1059 if (inta & CSR_INT_BIT_ALIVE) {
1060 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1061 priv->isr_stats.alive++;
1062 }
1063 }
1064 #endif
1065 /* Safely ignore these bits for debug checks below */
1066 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1067
1068 /* HW RF KILL switch toggled */
1069 if (inta & CSR_INT_BIT_RF_KILL) {
1070 int hw_rf_kill = 0;
1071 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1072 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1073 hw_rf_kill = 1;
1074
1075 IWL_DEBUG_RF_KILL(priv, "RF_KILL bit toggled to %s.\n",
1076 hw_rf_kill ? "disable radio" : "enable radio");
1077
1078 priv->isr_stats.rfkill++;
1079
1080 /* driver only loads ucode once setting the interface up.
1081 * the driver allows loading the ucode even if the radio
1082 * is killed. Hence update the killswitch state here. The
1083 * rfkill handler will care about restarting if needed.
1084 */
1085 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1086 if (hw_rf_kill)
1087 set_bit(STATUS_RF_KILL_HW, &priv->status);
1088 else
1089 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1090 queue_work(priv->workqueue, &priv->rf_kill);
1091 }
1092
1093 handled |= CSR_INT_BIT_RF_KILL;
1094 }
1095
1096 /* Chip got too hot and stopped itself */
1097 if (inta & CSR_INT_BIT_CT_KILL) {
1098 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1099 priv->isr_stats.ctkill++;
1100 handled |= CSR_INT_BIT_CT_KILL;
1101 }
1102
1103 /* Error detected by uCode */
1104 if (inta & CSR_INT_BIT_SW_ERR) {
1105 IWL_ERR(priv, "Microcode SW error detected. "
1106 " Restarting 0x%X.\n", inta);
1107 priv->isr_stats.sw++;
1108 priv->isr_stats.sw_err = inta;
1109 iwl_irq_handle_error(priv);
1110 handled |= CSR_INT_BIT_SW_ERR;
1111 }
1112
1113 /* uCode wakes up after power-down sleep */
1114 if (inta & CSR_INT_BIT_WAKEUP) {
1115 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1116 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1117 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1118 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1119 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1120 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1121 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1122 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1123
1124 priv->isr_stats.wakeup++;
1125
1126 handled |= CSR_INT_BIT_WAKEUP;
1127 }
1128
1129 /* All uCode command responses, including Tx command responses,
1130 * Rx "responses" (frame-received notification), and other
1131 * notifications from uCode come through here*/
1132 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1133 iwl_rx_handle(priv);
1134 priv->isr_stats.rx++;
1135 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1136 }
1137
1138 if (inta & CSR_INT_BIT_FH_TX) {
1139 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1140 priv->isr_stats.tx++;
1141 handled |= CSR_INT_BIT_FH_TX;
1142 /* FH finished to write, send event */
1143 priv->ucode_write_complete = 1;
1144 wake_up_interruptible(&priv->wait_command_queue);
1145 }
1146
1147 if (inta & ~handled) {
1148 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1149 priv->isr_stats.unhandled++;
1150 }
1151
1152 if (inta & ~CSR_INI_SET_MASK) {
1153 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1154 inta & ~CSR_INI_SET_MASK);
1155 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
1156 }
1157
1158 /* Re-enable all interrupts */
1159 /* only Re-enable if diabled by irq */
1160 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1161 iwl_enable_interrupts(priv);
1162
1163 #ifdef CONFIG_IWLWIFI_DEBUG
1164 if (priv->debug_level & (IWL_DL_ISR)) {
1165 inta = iwl_read32(priv, CSR_INT);
1166 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1167 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1168 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1169 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1170 }
1171 #endif
1172 spin_unlock_irqrestore(&priv->lock, flags);
1173 }
1174
1175
1176 /******************************************************************************
1177 *
1178 * uCode download functions
1179 *
1180 ******************************************************************************/
1181
1182 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1183 {
1184 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1185 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1186 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1187 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1188 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1189 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1190 }
1191
1192 static void iwl_nic_start(struct iwl_priv *priv)
1193 {
1194 /* Remove all resets to allow NIC to operate */
1195 iwl_write32(priv, CSR_RESET, 0);
1196 }
1197
1198
1199 /**
1200 * iwl_read_ucode - Read uCode images from disk file.
1201 *
1202 * Copy into buffers for card to fetch via bus-mastering
1203 */
1204 static int iwl_read_ucode(struct iwl_priv *priv)
1205 {
1206 struct iwl_ucode *ucode;
1207 int ret = -EINVAL, index;
1208 const struct firmware *ucode_raw;
1209 const char *name_pre = priv->cfg->fw_name_pre;
1210 const unsigned int api_max = priv->cfg->ucode_api_max;
1211 const unsigned int api_min = priv->cfg->ucode_api_min;
1212 char buf[25];
1213 u8 *src;
1214 size_t len;
1215 u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
1216
1217 /* Ask kernel firmware_class module to get the boot firmware off disk.
1218 * request_firmware() is synchronous, file is in memory on return. */
1219 for (index = api_max; index >= api_min; index--) {
1220 sprintf(buf, "%s%d%s", name_pre, index, ".ucode");
1221 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
1222 if (ret < 0) {
1223 IWL_ERR(priv, "%s firmware file req failed: %d\n",
1224 buf, ret);
1225 if (ret == -ENOENT)
1226 continue;
1227 else
1228 goto error;
1229 } else {
1230 if (index < api_max)
1231 IWL_ERR(priv, "Loaded firmware %s, "
1232 "which is deprecated. "
1233 "Please use API v%u instead.\n",
1234 buf, api_max);
1235
1236 IWL_DEBUG_INFO(priv, "Got firmware '%s' file (%zd bytes) from disk\n",
1237 buf, ucode_raw->size);
1238 break;
1239 }
1240 }
1241
1242 if (ret < 0)
1243 goto error;
1244
1245 /* Make sure that we got at least our header! */
1246 if (ucode_raw->size < sizeof(*ucode)) {
1247 IWL_ERR(priv, "File size way too small!\n");
1248 ret = -EINVAL;
1249 goto err_release;
1250 }
1251
1252 /* Data from ucode file: header followed by uCode images */
1253 ucode = (void *)ucode_raw->data;
1254
1255 priv->ucode_ver = le32_to_cpu(ucode->ver);
1256 api_ver = IWL_UCODE_API(priv->ucode_ver);
1257 inst_size = le32_to_cpu(ucode->inst_size);
1258 data_size = le32_to_cpu(ucode->data_size);
1259 init_size = le32_to_cpu(ucode->init_size);
1260 init_data_size = le32_to_cpu(ucode->init_data_size);
1261 boot_size = le32_to_cpu(ucode->boot_size);
1262
1263 /* api_ver should match the api version forming part of the
1264 * firmware filename ... but we don't check for that and only rely
1265 * on the API version read from firmware header from here on forward */
1266
1267 if (api_ver < api_min || api_ver > api_max) {
1268 IWL_ERR(priv, "Driver unable to support your firmware API. "
1269 "Driver supports v%u, firmware is v%u.\n",
1270 api_max, api_ver);
1271 priv->ucode_ver = 0;
1272 ret = -EINVAL;
1273 goto err_release;
1274 }
1275 if (api_ver != api_max)
1276 IWL_ERR(priv, "Firmware has old API version. Expected v%u, "
1277 "got v%u. New firmware can be obtained "
1278 "from http://www.intellinuxwireless.org.\n",
1279 api_max, api_ver);
1280
1281 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
1282 IWL_UCODE_MAJOR(priv->ucode_ver),
1283 IWL_UCODE_MINOR(priv->ucode_ver),
1284 IWL_UCODE_API(priv->ucode_ver),
1285 IWL_UCODE_SERIAL(priv->ucode_ver));
1286
1287 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1288 priv->ucode_ver);
1289 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
1290 inst_size);
1291 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
1292 data_size);
1293 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
1294 init_size);
1295 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
1296 init_data_size);
1297 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
1298 boot_size);
1299
1300 /* Verify size of file vs. image size info in file's header */
1301 if (ucode_raw->size < sizeof(*ucode) +
1302 inst_size + data_size + init_size +
1303 init_data_size + boot_size) {
1304
1305 IWL_DEBUG_INFO(priv, "uCode file size %d too small\n",
1306 (int)ucode_raw->size);
1307 ret = -EINVAL;
1308 goto err_release;
1309 }
1310
1311 /* Verify that uCode images will fit in card's SRAM */
1312 if (inst_size > priv->hw_params.max_inst_size) {
1313 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
1314 inst_size);
1315 ret = -EINVAL;
1316 goto err_release;
1317 }
1318
1319 if (data_size > priv->hw_params.max_data_size) {
1320 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
1321 data_size);
1322 ret = -EINVAL;
1323 goto err_release;
1324 }
1325 if (init_size > priv->hw_params.max_inst_size) {
1326 IWL_INFO(priv, "uCode init instr len %d too large to fit in\n",
1327 init_size);
1328 ret = -EINVAL;
1329 goto err_release;
1330 }
1331 if (init_data_size > priv->hw_params.max_data_size) {
1332 IWL_INFO(priv, "uCode init data len %d too large to fit in\n",
1333 init_data_size);
1334 ret = -EINVAL;
1335 goto err_release;
1336 }
1337 if (boot_size > priv->hw_params.max_bsm_size) {
1338 IWL_INFO(priv, "uCode boot instr len %d too large to fit in\n",
1339 boot_size);
1340 ret = -EINVAL;
1341 goto err_release;
1342 }
1343
1344 /* Allocate ucode buffers for card's bus-master loading ... */
1345
1346 /* Runtime instructions and 2 copies of data:
1347 * 1) unmodified from disk
1348 * 2) backup cache for save/restore during power-downs */
1349 priv->ucode_code.len = inst_size;
1350 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1351
1352 priv->ucode_data.len = data_size;
1353 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1354
1355 priv->ucode_data_backup.len = data_size;
1356 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1357
1358 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
1359 !priv->ucode_data_backup.v_addr)
1360 goto err_pci_alloc;
1361
1362 /* Initialization instructions and data */
1363 if (init_size && init_data_size) {
1364 priv->ucode_init.len = init_size;
1365 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1366
1367 priv->ucode_init_data.len = init_data_size;
1368 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1369
1370 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1371 goto err_pci_alloc;
1372 }
1373
1374 /* Bootstrap (instructions only, no data) */
1375 if (boot_size) {
1376 priv->ucode_boot.len = boot_size;
1377 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1378
1379 if (!priv->ucode_boot.v_addr)
1380 goto err_pci_alloc;
1381 }
1382
1383 /* Copy images into buffers for card's bus-master reads ... */
1384
1385 /* Runtime instructions (first block of data in file) */
1386 src = &ucode->data[0];
1387 len = priv->ucode_code.len;
1388 IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode instr len %Zd\n", len);
1389 memcpy(priv->ucode_code.v_addr, src, len);
1390 IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1391 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1392
1393 /* Runtime data (2nd block)
1394 * NOTE: Copy into backup buffer will be done in iwl_up() */
1395 src = &ucode->data[inst_size];
1396 len = priv->ucode_data.len;
1397 IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode data len %Zd\n", len);
1398 memcpy(priv->ucode_data.v_addr, src, len);
1399 memcpy(priv->ucode_data_backup.v_addr, src, len);
1400
1401 /* Initialization instructions (3rd block) */
1402 if (init_size) {
1403 src = &ucode->data[inst_size + data_size];
1404 len = priv->ucode_init.len;
1405 IWL_DEBUG_INFO(priv, "Copying (but not loading) init instr len %Zd\n",
1406 len);
1407 memcpy(priv->ucode_init.v_addr, src, len);
1408 }
1409
1410 /* Initialization data (4th block) */
1411 if (init_data_size) {
1412 src = &ucode->data[inst_size + data_size + init_size];
1413 len = priv->ucode_init_data.len;
1414 IWL_DEBUG_INFO(priv, "Copying (but not loading) init data len %Zd\n",
1415 len);
1416 memcpy(priv->ucode_init_data.v_addr, src, len);
1417 }
1418
1419 /* Bootstrap instructions (5th block) */
1420 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1421 len = priv->ucode_boot.len;
1422 IWL_DEBUG_INFO(priv, "Copying (but not loading) boot instr len %Zd\n", len);
1423 memcpy(priv->ucode_boot.v_addr, src, len);
1424
1425 /* We have our copies now, allow OS release its copies */
1426 release_firmware(ucode_raw);
1427 return 0;
1428
1429 err_pci_alloc:
1430 IWL_ERR(priv, "failed to allocate pci memory\n");
1431 ret = -ENOMEM;
1432 iwl_dealloc_ucode_pci(priv);
1433
1434 err_release:
1435 release_firmware(ucode_raw);
1436
1437 error:
1438 return ret;
1439 }
1440
1441 /**
1442 * iwl_alive_start - called after REPLY_ALIVE notification received
1443 * from protocol/runtime uCode (initialization uCode's
1444 * Alive gets handled by iwl_init_alive_start()).
1445 */
1446 static void iwl_alive_start(struct iwl_priv *priv)
1447 {
1448 int ret = 0;
1449
1450 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1451
1452 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1453 /* We had an error bringing up the hardware, so take it
1454 * all the way back down so we can try again */
1455 IWL_DEBUG_INFO(priv, "Alive failed.\n");
1456 goto restart;
1457 }
1458
1459 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1460 * This is a paranoid check, because we would not have gotten the
1461 * "runtime" alive if code weren't properly loaded. */
1462 if (iwl_verify_ucode(priv)) {
1463 /* Runtime instruction load was bad;
1464 * take it all the way back down so we can try again */
1465 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
1466 goto restart;
1467 }
1468
1469 priv->cfg->ops->smgmt->clear_station_table(priv);
1470 ret = priv->cfg->ops->lib->alive_notify(priv);
1471 if (ret) {
1472 IWL_WARN(priv,
1473 "Could not complete ALIVE transition [ntf]: %d\n", ret);
1474 goto restart;
1475 }
1476
1477 /* After the ALIVE response, we can send host commands to the uCode */
1478 set_bit(STATUS_ALIVE, &priv->status);
1479
1480 if (iwl_is_rfkill(priv))
1481 return;
1482
1483 ieee80211_wake_queues(priv->hw);
1484
1485 priv->active_rate = priv->rates_mask;
1486 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1487
1488 if (iwl_is_associated(priv)) {
1489 struct iwl_rxon_cmd *active_rxon =
1490 (struct iwl_rxon_cmd *)&priv->active_rxon;
1491 /* apply any changes in staging */
1492 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
1493 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1494 } else {
1495 /* Initialize our rx_config data */
1496 iwl_connection_init_rx_config(priv, priv->iw_mode);
1497
1498 if (priv->cfg->ops->hcmd->set_rxon_chain)
1499 priv->cfg->ops->hcmd->set_rxon_chain(priv);
1500
1501 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1502 }
1503
1504 /* Configure Bluetooth device coexistence support */
1505 iwl_send_bt_config(priv);
1506
1507 iwl_reset_run_time_calib(priv);
1508
1509 /* Configure the adapter for unassociated operation */
1510 iwlcore_commit_rxon(priv);
1511
1512 /* At this point, the NIC is initialized and operational */
1513 iwl_rf_kill_ct_config(priv);
1514
1515 iwl_leds_register(priv);
1516
1517 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
1518 set_bit(STATUS_READY, &priv->status);
1519 wake_up_interruptible(&priv->wait_command_queue);
1520
1521 if (priv->error_recovering)
1522 iwl_error_recovery(priv);
1523
1524 iwl_power_update_mode(priv, 1);
1525
1526 /* reassociate for ADHOC mode */
1527 if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
1528 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
1529 priv->vif);
1530 if (beacon)
1531 iwl_mac_beacon_update(priv->hw, beacon);
1532 }
1533
1534
1535 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
1536 iwl_set_mode(priv, priv->iw_mode);
1537
1538 return;
1539
1540 restart:
1541 queue_work(priv->workqueue, &priv->restart);
1542 }
1543
1544 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1545
1546 static void __iwl_down(struct iwl_priv *priv)
1547 {
1548 unsigned long flags;
1549 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
1550
1551 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
1552
1553 if (!exit_pending)
1554 set_bit(STATUS_EXIT_PENDING, &priv->status);
1555
1556 iwl_leds_unregister(priv);
1557
1558 priv->cfg->ops->smgmt->clear_station_table(priv);
1559
1560 /* Unblock any waiting calls */
1561 wake_up_interruptible_all(&priv->wait_command_queue);
1562
1563 /* Wipe out the EXIT_PENDING status bit if we are not actually
1564 * exiting the module */
1565 if (!exit_pending)
1566 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1567
1568 /* stop and reset the on-board processor */
1569 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
1570
1571 /* tell the device to stop sending interrupts */
1572 spin_lock_irqsave(&priv->lock, flags);
1573 iwl_disable_interrupts(priv);
1574 spin_unlock_irqrestore(&priv->lock, flags);
1575 iwl_synchronize_irq(priv);
1576
1577 if (priv->mac80211_registered)
1578 ieee80211_stop_queues(priv->hw);
1579
1580 /* If we have not previously called iwl_init() then
1581 * clear all bits but the RF Kill bits and return */
1582 if (!iwl_is_init(priv)) {
1583 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1584 STATUS_RF_KILL_HW |
1585 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
1586 STATUS_RF_KILL_SW |
1587 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1588 STATUS_GEO_CONFIGURED |
1589 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1590 STATUS_EXIT_PENDING;
1591 goto exit;
1592 }
1593
1594 /* ...otherwise clear out all the status bits but the RF Kill
1595 * bits and continue taking the NIC down. */
1596 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1597 STATUS_RF_KILL_HW |
1598 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
1599 STATUS_RF_KILL_SW |
1600 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1601 STATUS_GEO_CONFIGURED |
1602 test_bit(STATUS_FW_ERROR, &priv->status) <<
1603 STATUS_FW_ERROR |
1604 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1605 STATUS_EXIT_PENDING;
1606
1607 spin_lock_irqsave(&priv->lock, flags);
1608 iwl_clear_bit(priv, CSR_GP_CNTRL,
1609 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
1610 spin_unlock_irqrestore(&priv->lock, flags);
1611
1612 iwl_txq_ctx_stop(priv);
1613 iwl_rxq_stop(priv);
1614
1615 spin_lock_irqsave(&priv->lock, flags);
1616 if (!iwl_grab_nic_access(priv)) {
1617 iwl_write_prph(priv, APMG_CLK_DIS_REG,
1618 APMG_CLK_VAL_DMA_CLK_RQT);
1619 iwl_release_nic_access(priv);
1620 }
1621 spin_unlock_irqrestore(&priv->lock, flags);
1622
1623 udelay(5);
1624
1625 /* FIXME: apm_ops.suspend(priv) */
1626 if (exit_pending)
1627 priv->cfg->ops->lib->apm_ops.stop(priv);
1628 else
1629 priv->cfg->ops->lib->apm_ops.reset(priv);
1630 exit:
1631 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
1632
1633 if (priv->ibss_beacon)
1634 dev_kfree_skb(priv->ibss_beacon);
1635 priv->ibss_beacon = NULL;
1636
1637 /* clear out any free frames */
1638 iwl_clear_free_frames(priv);
1639 }
1640
1641 static void iwl_down(struct iwl_priv *priv)
1642 {
1643 mutex_lock(&priv->mutex);
1644 __iwl_down(priv);
1645 mutex_unlock(&priv->mutex);
1646
1647 iwl_cancel_deferred_work(priv);
1648 }
1649
1650 #define MAX_HW_RESTARTS 5
1651
1652 static int __iwl_up(struct iwl_priv *priv)
1653 {
1654 int i;
1655 int ret;
1656
1657 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1658 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
1659 return -EIO;
1660 }
1661
1662 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
1663 IWL_ERR(priv, "ucode not available for device bringup\n");
1664 return -EIO;
1665 }
1666
1667 /* If platform's RF_KILL switch is NOT set to KILL */
1668 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
1669 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1670 else
1671 set_bit(STATUS_RF_KILL_HW, &priv->status);
1672
1673 if (iwl_is_rfkill(priv)) {
1674 iwl_enable_interrupts(priv);
1675 IWL_WARN(priv, "Radio disabled by %s RF Kill switch\n",
1676 test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
1677 return 0;
1678 }
1679
1680 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
1681
1682 ret = iwl_hw_nic_init(priv);
1683 if (ret) {
1684 IWL_ERR(priv, "Unable to init nic\n");
1685 return ret;
1686 }
1687
1688 /* make sure rfkill handshake bits are cleared */
1689 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1690 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1691 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1692
1693 /* clear (again), then enable host interrupts */
1694 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
1695 iwl_enable_interrupts(priv);
1696
1697 /* really make sure rfkill handshake bits are cleared */
1698 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1699 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1700
1701 /* Copy original ucode data image from disk into backup cache.
1702 * This will be used to initialize the on-board processor's
1703 * data SRAM for a clean start when the runtime program first loads. */
1704 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
1705 priv->ucode_data.len);
1706
1707 for (i = 0; i < MAX_HW_RESTARTS; i++) {
1708
1709 priv->cfg->ops->smgmt->clear_station_table(priv);
1710
1711 /* load bootstrap state machine,
1712 * load bootstrap program into processor's memory,
1713 * prepare to load the "initialize" uCode */
1714 ret = priv->cfg->ops->lib->load_ucode(priv);
1715
1716 if (ret) {
1717 IWL_ERR(priv, "Unable to set up bootstrap uCode: %d\n",
1718 ret);
1719 continue;
1720 }
1721
1722 /* Clear out the uCode error bit if it is set */
1723 clear_bit(STATUS_FW_ERROR, &priv->status);
1724
1725 /* start card; "initialize" will load runtime ucode */
1726 iwl_nic_start(priv);
1727
1728 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
1729
1730 return 0;
1731 }
1732
1733 set_bit(STATUS_EXIT_PENDING, &priv->status);
1734 __iwl_down(priv);
1735 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1736
1737 /* tried to restart and config the device for as long as our
1738 * patience could withstand */
1739 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
1740 return -EIO;
1741 }
1742
1743
1744 /*****************************************************************************
1745 *
1746 * Workqueue callbacks
1747 *
1748 *****************************************************************************/
1749
1750 static void iwl_bg_init_alive_start(struct work_struct *data)
1751 {
1752 struct iwl_priv *priv =
1753 container_of(data, struct iwl_priv, init_alive_start.work);
1754
1755 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1756 return;
1757
1758 mutex_lock(&priv->mutex);
1759 priv->cfg->ops->lib->init_alive_start(priv);
1760 mutex_unlock(&priv->mutex);
1761 }
1762
1763 static void iwl_bg_alive_start(struct work_struct *data)
1764 {
1765 struct iwl_priv *priv =
1766 container_of(data, struct iwl_priv, alive_start.work);
1767
1768 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1769 return;
1770
1771 mutex_lock(&priv->mutex);
1772 iwl_alive_start(priv);
1773 mutex_unlock(&priv->mutex);
1774 }
1775
1776 static void iwl_bg_run_time_calib_work(struct work_struct *work)
1777 {
1778 struct iwl_priv *priv = container_of(work, struct iwl_priv,
1779 run_time_calib_work);
1780
1781 mutex_lock(&priv->mutex);
1782
1783 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
1784 test_bit(STATUS_SCANNING, &priv->status)) {
1785 mutex_unlock(&priv->mutex);
1786 return;
1787 }
1788
1789 if (priv->start_calib) {
1790 iwl_chain_noise_calibration(priv, &priv->statistics);
1791
1792 iwl_sensitivity_calibration(priv, &priv->statistics);
1793 }
1794
1795 mutex_unlock(&priv->mutex);
1796 return;
1797 }
1798
1799 static void iwl_bg_up(struct work_struct *data)
1800 {
1801 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
1802
1803 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1804 return;
1805
1806 mutex_lock(&priv->mutex);
1807 __iwl_up(priv);
1808 mutex_unlock(&priv->mutex);
1809 iwl_rfkill_set_hw_state(priv);
1810 }
1811
1812 static void iwl_bg_restart(struct work_struct *data)
1813 {
1814 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
1815
1816 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1817 return;
1818
1819 iwl_down(priv);
1820 queue_work(priv->workqueue, &priv->up);
1821 }
1822
1823 static void iwl_bg_rx_replenish(struct work_struct *data)
1824 {
1825 struct iwl_priv *priv =
1826 container_of(data, struct iwl_priv, rx_replenish);
1827
1828 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1829 return;
1830
1831 mutex_lock(&priv->mutex);
1832 iwl_rx_replenish(priv);
1833 mutex_unlock(&priv->mutex);
1834 }
1835
1836 #define IWL_DELAY_NEXT_SCAN (HZ*2)
1837
1838 void iwl_post_associate(struct iwl_priv *priv)
1839 {
1840 struct ieee80211_conf *conf = NULL;
1841 int ret = 0;
1842 unsigned long flags;
1843
1844 if (priv->iw_mode == NL80211_IFTYPE_AP) {
1845 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
1846 return;
1847 }
1848
1849 IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
1850 priv->assoc_id, priv->active_rxon.bssid_addr);
1851
1852
1853 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1854 return;
1855
1856
1857 if (!priv->vif || !priv->is_open)
1858 return;
1859
1860 iwl_power_cancel_timeout(priv);
1861 iwl_scan_cancel_timeout(priv, 200);
1862
1863 conf = ieee80211_get_hw_conf(priv->hw);
1864
1865 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1866 iwlcore_commit_rxon(priv);
1867
1868 iwl_setup_rxon_timing(priv);
1869 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
1870 sizeof(priv->rxon_timing), &priv->rxon_timing);
1871 if (ret)
1872 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
1873 "Attempting to continue.\n");
1874
1875 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
1876
1877 iwl_set_rxon_ht(priv, &priv->current_ht_config);
1878
1879 if (priv->cfg->ops->hcmd->set_rxon_chain)
1880 priv->cfg->ops->hcmd->set_rxon_chain(priv);
1881
1882 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
1883
1884 IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
1885 priv->assoc_id, priv->beacon_int);
1886
1887 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
1888 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1889 else
1890 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1891
1892 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
1893 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1894 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1895 else
1896 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1897
1898 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1899 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1900
1901 }
1902
1903 iwlcore_commit_rxon(priv);
1904
1905 switch (priv->iw_mode) {
1906 case NL80211_IFTYPE_STATION:
1907 break;
1908
1909 case NL80211_IFTYPE_ADHOC:
1910
1911 /* assume default assoc id */
1912 priv->assoc_id = 1;
1913
1914 iwl_rxon_add_station(priv, priv->bssid, 0);
1915 iwl_send_beacon_cmd(priv);
1916
1917 break;
1918
1919 default:
1920 IWL_ERR(priv, "%s Should not be called in %d mode\n",
1921 __func__, priv->iw_mode);
1922 break;
1923 }
1924
1925 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1926 priv->assoc_station_added = 1;
1927
1928 spin_lock_irqsave(&priv->lock, flags);
1929 iwl_activate_qos(priv, 0);
1930 spin_unlock_irqrestore(&priv->lock, flags);
1931
1932 /* the chain noise calibration will enabled PM upon completion
1933 * If chain noise has already been run, then we need to enable
1934 * power management here */
1935 if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
1936 iwl_power_enable_management(priv);
1937
1938 /* Enable Rx differential gain and sensitivity calibrations */
1939 iwl_chain_noise_reset(priv);
1940 priv->start_calib = 1;
1941
1942 }
1943
1944 /*****************************************************************************
1945 *
1946 * mac80211 entry point functions
1947 *
1948 *****************************************************************************/
1949
1950 #define UCODE_READY_TIMEOUT (4 * HZ)
1951
1952 static int iwl_mac_start(struct ieee80211_hw *hw)
1953 {
1954 struct iwl_priv *priv = hw->priv;
1955 int ret;
1956
1957 IWL_DEBUG_MAC80211(priv, "enter\n");
1958
1959 /* we should be verifying the device is ready to be opened */
1960 mutex_lock(&priv->mutex);
1961
1962 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
1963 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
1964 * ucode filename and max sizes are card-specific. */
1965
1966 if (!priv->ucode_code.len) {
1967 ret = iwl_read_ucode(priv);
1968 if (ret) {
1969 IWL_ERR(priv, "Could not read microcode: %d\n", ret);
1970 mutex_unlock(&priv->mutex);
1971 return ret;
1972 }
1973 }
1974
1975 ret = __iwl_up(priv);
1976
1977 mutex_unlock(&priv->mutex);
1978
1979 iwl_rfkill_set_hw_state(priv);
1980
1981 if (ret)
1982 return ret;
1983
1984 if (iwl_is_rfkill(priv))
1985 goto out;
1986
1987 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
1988
1989 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
1990 * mac80211 will not be run successfully. */
1991 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
1992 test_bit(STATUS_READY, &priv->status),
1993 UCODE_READY_TIMEOUT);
1994 if (!ret) {
1995 if (!test_bit(STATUS_READY, &priv->status)) {
1996 IWL_ERR(priv, "START_ALIVE timeout after %dms.\n",
1997 jiffies_to_msecs(UCODE_READY_TIMEOUT));
1998 return -ETIMEDOUT;
1999 }
2000 }
2001
2002 out:
2003 priv->is_open = 1;
2004 IWL_DEBUG_MAC80211(priv, "leave\n");
2005 return 0;
2006 }
2007
2008 static void iwl_mac_stop(struct ieee80211_hw *hw)
2009 {
2010 struct iwl_priv *priv = hw->priv;
2011
2012 IWL_DEBUG_MAC80211(priv, "enter\n");
2013
2014 if (!priv->is_open) {
2015 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
2016 return;
2017 }
2018
2019 priv->is_open = 0;
2020
2021 if (iwl_is_ready_rf(priv)) {
2022 /* stop mac, cancel any scan request and clear
2023 * RXON_FILTER_ASSOC_MSK BIT
2024 */
2025 mutex_lock(&priv->mutex);
2026 iwl_scan_cancel_timeout(priv, 100);
2027 mutex_unlock(&priv->mutex);
2028 }
2029
2030 iwl_down(priv);
2031
2032 flush_workqueue(priv->workqueue);
2033
2034 /* enable interrupts again in order to receive rfkill changes */
2035 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2036 iwl_enable_interrupts(priv);
2037
2038 IWL_DEBUG_MAC80211(priv, "leave\n");
2039 }
2040
2041 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2042 {
2043 struct iwl_priv *priv = hw->priv;
2044
2045 IWL_DEBUG_MACDUMP(priv, "enter\n");
2046
2047 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2048 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2049
2050 if (iwl_tx_skb(priv, skb))
2051 dev_kfree_skb_any(skb);
2052
2053 IWL_DEBUG_MACDUMP(priv, "leave\n");
2054 return NETDEV_TX_OK;
2055 }
2056
2057 void iwl_config_ap(struct iwl_priv *priv)
2058 {
2059 int ret = 0;
2060 unsigned long flags;
2061
2062 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2063 return;
2064
2065 /* The following should be done only at AP bring up */
2066 if (!iwl_is_associated(priv)) {
2067
2068 /* RXON - unassoc (to set timing command) */
2069 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2070 iwlcore_commit_rxon(priv);
2071
2072 /* RXON Timing */
2073 iwl_setup_rxon_timing(priv);
2074 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2075 sizeof(priv->rxon_timing), &priv->rxon_timing);
2076 if (ret)
2077 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
2078 "Attempting to continue.\n");
2079
2080 if (priv->cfg->ops->hcmd->set_rxon_chain)
2081 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2082
2083 /* FIXME: what should be the assoc_id for AP? */
2084 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2085 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2086 priv->staging_rxon.flags |=
2087 RXON_FLG_SHORT_PREAMBLE_MSK;
2088 else
2089 priv->staging_rxon.flags &=
2090 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2091
2092 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2093 if (priv->assoc_capability &
2094 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2095 priv->staging_rxon.flags |=
2096 RXON_FLG_SHORT_SLOT_MSK;
2097 else
2098 priv->staging_rxon.flags &=
2099 ~RXON_FLG_SHORT_SLOT_MSK;
2100
2101 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2102 priv->staging_rxon.flags &=
2103 ~RXON_FLG_SHORT_SLOT_MSK;
2104 }
2105 /* restore RXON assoc */
2106 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2107 iwlcore_commit_rxon(priv);
2108 spin_lock_irqsave(&priv->lock, flags);
2109 iwl_activate_qos(priv, 1);
2110 spin_unlock_irqrestore(&priv->lock, flags);
2111 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2112 }
2113 iwl_send_beacon_cmd(priv);
2114
2115 /* FIXME - we need to add code here to detect a totally new
2116 * configuration, reset the AP, unassoc, rxon timing, assoc,
2117 * clear sta table, add BCAST sta... */
2118 }
2119
2120 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
2121 struct ieee80211_key_conf *keyconf, const u8 *addr,
2122 u32 iv32, u16 *phase1key)
2123 {
2124
2125 struct iwl_priv *priv = hw->priv;
2126 IWL_DEBUG_MAC80211(priv, "enter\n");
2127
2128 iwl_update_tkip_key(priv, keyconf, addr, iv32, phase1key);
2129
2130 IWL_DEBUG_MAC80211(priv, "leave\n");
2131 }
2132
2133 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2134 struct ieee80211_vif *vif,
2135 struct ieee80211_sta *sta,
2136 struct ieee80211_key_conf *key)
2137 {
2138 struct iwl_priv *priv = hw->priv;
2139 const u8 *addr;
2140 int ret;
2141 u8 sta_id;
2142 bool is_default_wep_key = false;
2143
2144 IWL_DEBUG_MAC80211(priv, "enter\n");
2145
2146 if (priv->hw_params.sw_crypto) {
2147 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
2148 return -EOPNOTSUPP;
2149 }
2150 addr = sta ? sta->addr : iwl_bcast_addr;
2151 sta_id = priv->cfg->ops->smgmt->find_station(priv, addr);
2152 if (sta_id == IWL_INVALID_STATION) {
2153 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
2154 addr);
2155 return -EINVAL;
2156
2157 }
2158
2159 mutex_lock(&priv->mutex);
2160 iwl_scan_cancel_timeout(priv, 100);
2161 mutex_unlock(&priv->mutex);
2162
2163 /* If we are getting WEP group key and we didn't receive any key mapping
2164 * so far, we are in legacy wep mode (group key only), otherwise we are
2165 * in 1X mode.
2166 * In legacy wep mode, we use another host command to the uCode */
2167 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
2168 priv->iw_mode != NL80211_IFTYPE_AP) {
2169 if (cmd == SET_KEY)
2170 is_default_wep_key = !priv->key_mapping_key;
2171 else
2172 is_default_wep_key =
2173 (key->hw_key_idx == HW_KEY_DEFAULT);
2174 }
2175
2176 switch (cmd) {
2177 case SET_KEY:
2178 if (is_default_wep_key)
2179 ret = iwl_set_default_wep_key(priv, key);
2180 else
2181 ret = iwl_set_dynamic_key(priv, key, sta_id);
2182
2183 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
2184 break;
2185 case DISABLE_KEY:
2186 if (is_default_wep_key)
2187 ret = iwl_remove_default_wep_key(priv, key);
2188 else
2189 ret = iwl_remove_dynamic_key(priv, key, sta_id);
2190
2191 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
2192 break;
2193 default:
2194 ret = -EINVAL;
2195 }
2196
2197 IWL_DEBUG_MAC80211(priv, "leave\n");
2198
2199 return ret;
2200 }
2201
2202 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
2203 enum ieee80211_ampdu_mlme_action action,
2204 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
2205 {
2206 struct iwl_priv *priv = hw->priv;
2207 int ret;
2208
2209 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
2210 sta->addr, tid);
2211
2212 if (!(priv->cfg->sku & IWL_SKU_N))
2213 return -EACCES;
2214
2215 switch (action) {
2216 case IEEE80211_AMPDU_RX_START:
2217 IWL_DEBUG_HT(priv, "start Rx\n");
2218 return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn);
2219 case IEEE80211_AMPDU_RX_STOP:
2220 IWL_DEBUG_HT(priv, "stop Rx\n");
2221 ret = iwl_sta_rx_agg_stop(priv, sta->addr, tid);
2222 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2223 return 0;
2224 else
2225 return ret;
2226 case IEEE80211_AMPDU_TX_START:
2227 IWL_DEBUG_HT(priv, "start Tx\n");
2228 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
2229 case IEEE80211_AMPDU_TX_STOP:
2230 IWL_DEBUG_HT(priv, "stop Tx\n");
2231 ret = iwl_tx_agg_stop(priv, sta->addr, tid);
2232 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2233 return 0;
2234 else
2235 return ret;
2236 default:
2237 IWL_DEBUG_HT(priv, "unknown\n");
2238 return -EINVAL;
2239 break;
2240 }
2241 return 0;
2242 }
2243
2244 static int iwl_mac_get_stats(struct ieee80211_hw *hw,
2245 struct ieee80211_low_level_stats *stats)
2246 {
2247 struct iwl_priv *priv = hw->priv;
2248
2249 priv = hw->priv;
2250 IWL_DEBUG_MAC80211(priv, "enter\n");
2251 IWL_DEBUG_MAC80211(priv, "leave\n");
2252
2253 return 0;
2254 }
2255
2256 /*****************************************************************************
2257 *
2258 * sysfs attributes
2259 *
2260 *****************************************************************************/
2261
2262 #ifdef CONFIG_IWLWIFI_DEBUG
2263
2264 /*
2265 * The following adds a new attribute to the sysfs representation
2266 * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
2267 * used for controlling the debug level.
2268 *
2269 * See the level definitions in iwl for details.
2270 */
2271
2272 static ssize_t show_debug_level(struct device *d,
2273 struct device_attribute *attr, char *buf)
2274 {
2275 struct iwl_priv *priv = d->driver_data;
2276
2277 return sprintf(buf, "0x%08X\n", priv->debug_level);
2278 }
2279 static ssize_t store_debug_level(struct device *d,
2280 struct device_attribute *attr,
2281 const char *buf, size_t count)
2282 {
2283 struct iwl_priv *priv = d->driver_data;
2284 unsigned long val;
2285 int ret;
2286
2287 ret = strict_strtoul(buf, 0, &val);
2288 if (ret)
2289 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
2290 else
2291 priv->debug_level = val;
2292
2293 return strnlen(buf, count);
2294 }
2295
2296 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
2297 show_debug_level, store_debug_level);
2298
2299
2300 #endif /* CONFIG_IWLWIFI_DEBUG */
2301
2302
2303 static ssize_t show_version(struct device *d,
2304 struct device_attribute *attr, char *buf)
2305 {
2306 struct iwl_priv *priv = d->driver_data;
2307 struct iwl_alive_resp *palive = &priv->card_alive;
2308 ssize_t pos = 0;
2309 u16 eeprom_ver;
2310
2311 if (palive->is_valid)
2312 pos += sprintf(buf + pos,
2313 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
2314 "fw type: 0x%01X 0x%01X\n",
2315 palive->ucode_major, palive->ucode_minor,
2316 palive->sw_rev[0], palive->sw_rev[1],
2317 palive->ver_type, palive->ver_subtype);
2318 else
2319 pos += sprintf(buf + pos, "fw not loaded\n");
2320
2321 if (priv->eeprom) {
2322 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
2323 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
2324 eeprom_ver);
2325 } else {
2326 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
2327 }
2328
2329 return pos;
2330 }
2331
2332 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
2333
2334 static ssize_t show_temperature(struct device *d,
2335 struct device_attribute *attr, char *buf)
2336 {
2337 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
2338
2339 if (!iwl_is_alive(priv))
2340 return -EAGAIN;
2341
2342 return sprintf(buf, "%d\n", priv->temperature);
2343 }
2344
2345 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
2346
2347 static ssize_t show_tx_power(struct device *d,
2348 struct device_attribute *attr, char *buf)
2349 {
2350 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
2351
2352 if (!iwl_is_ready_rf(priv))
2353 return sprintf(buf, "off\n");
2354 else
2355 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
2356 }
2357
2358 static ssize_t store_tx_power(struct device *d,
2359 struct device_attribute *attr,
2360 const char *buf, size_t count)
2361 {
2362 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
2363 unsigned long val;
2364 int ret;
2365
2366 ret = strict_strtoul(buf, 10, &val);
2367 if (ret)
2368 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
2369 else
2370 iwl_set_tx_power(priv, val, false);
2371
2372 return count;
2373 }
2374
2375 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
2376
2377 static ssize_t show_flags(struct device *d,
2378 struct device_attribute *attr, char *buf)
2379 {
2380 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
2381
2382 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
2383 }
2384
2385 static ssize_t store_flags(struct device *d,
2386 struct device_attribute *attr,
2387 const char *buf, size_t count)
2388 {
2389 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
2390 unsigned long val;
2391 u32 flags;
2392 int ret = strict_strtoul(buf, 0, &val);
2393 if (ret)
2394 return ret;
2395 flags = (u32)val;
2396
2397 mutex_lock(&priv->mutex);
2398 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
2399 /* Cancel any currently running scans... */
2400 if (iwl_scan_cancel_timeout(priv, 100))
2401 IWL_WARN(priv, "Could not cancel scan.\n");
2402 else {
2403 IWL_DEBUG_INFO(priv, "Commit rxon.flags = 0x%04X\n", flags);
2404 priv->staging_rxon.flags = cpu_to_le32(flags);
2405 iwlcore_commit_rxon(priv);
2406 }
2407 }
2408 mutex_unlock(&priv->mutex);
2409
2410 return count;
2411 }
2412
2413 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
2414
2415 static ssize_t show_filter_flags(struct device *d,
2416 struct device_attribute *attr, char *buf)
2417 {
2418 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
2419
2420 return sprintf(buf, "0x%04X\n",
2421 le32_to_cpu(priv->active_rxon.filter_flags));
2422 }
2423
2424 static ssize_t store_filter_flags(struct device *d,
2425 struct device_attribute *attr,
2426 const char *buf, size_t count)
2427 {
2428 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
2429 unsigned long val;
2430 u32 filter_flags;
2431 int ret = strict_strtoul(buf, 0, &val);
2432 if (ret)
2433 return ret;
2434 filter_flags = (u32)val;
2435
2436 mutex_lock(&priv->mutex);
2437 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
2438 /* Cancel any currently running scans... */
2439 if (iwl_scan_cancel_timeout(priv, 100))
2440 IWL_WARN(priv, "Could not cancel scan.\n");
2441 else {
2442 IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
2443 "0x%04X\n", filter_flags);
2444 priv->staging_rxon.filter_flags =
2445 cpu_to_le32(filter_flags);
2446 iwlcore_commit_rxon(priv);
2447 }
2448 }
2449 mutex_unlock(&priv->mutex);
2450
2451 return count;
2452 }
2453
2454 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
2455 store_filter_flags);
2456
2457 static ssize_t store_power_level(struct device *d,
2458 struct device_attribute *attr,
2459 const char *buf, size_t count)
2460 {
2461 struct iwl_priv *priv = dev_get_drvdata(d);
2462 int ret;
2463 unsigned long mode;
2464
2465
2466 mutex_lock(&priv->mutex);
2467
2468 ret = strict_strtoul(buf, 10, &mode);
2469 if (ret)
2470 goto out;
2471
2472 ret = iwl_power_set_user_mode(priv, mode);
2473 if (ret) {
2474 IWL_DEBUG_MAC80211(priv, "failed setting power mode.\n");
2475 goto out;
2476 }
2477 ret = count;
2478
2479 out:
2480 mutex_unlock(&priv->mutex);
2481 return ret;
2482 }
2483
2484 static ssize_t show_power_level(struct device *d,
2485 struct device_attribute *attr, char *buf)
2486 {
2487 struct iwl_priv *priv = dev_get_drvdata(d);
2488 int mode = priv->power_data.user_power_setting;
2489 int system = priv->power_data.system_power_setting;
2490 int level = priv->power_data.power_mode;
2491 char *p = buf;
2492
2493 switch (system) {
2494 case IWL_POWER_SYS_AUTO:
2495 p += sprintf(p, "SYSTEM:auto");
2496 break;
2497 case IWL_POWER_SYS_AC:
2498 p += sprintf(p, "SYSTEM:ac");
2499 break;
2500 case IWL_POWER_SYS_BATTERY:
2501 p += sprintf(p, "SYSTEM:battery");
2502 break;
2503 }
2504
2505 p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO) ?
2506 "fixed" : "auto");
2507 p += sprintf(p, "\tINDEX:%d", level);
2508 p += sprintf(p, "\n");
2509 return p - buf + 1;
2510 }
2511
2512 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
2513 store_power_level);
2514
2515
2516 static ssize_t show_statistics(struct device *d,
2517 struct device_attribute *attr, char *buf)
2518 {
2519 struct iwl_priv *priv = dev_get_drvdata(d);
2520 u32 size = sizeof(struct iwl_notif_statistics);
2521 u32 len = 0, ofs = 0;
2522 u8 *data = (u8 *)&priv->statistics;
2523 int rc = 0;
2524
2525 if (!iwl_is_alive(priv))
2526 return -EAGAIN;
2527
2528 mutex_lock(&priv->mutex);
2529 rc = iwl_send_statistics_request(priv, 0);
2530 mutex_unlock(&priv->mutex);
2531
2532 if (rc) {
2533 len = sprintf(buf,
2534 "Error sending statistics request: 0x%08X\n", rc);
2535 return len;
2536 }
2537
2538 while (size && (PAGE_SIZE - len)) {
2539 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
2540 PAGE_SIZE - len, 1);
2541 len = strlen(buf);
2542 if (PAGE_SIZE - len)
2543 buf[len++] = '\n';
2544
2545 ofs += 16;
2546 size -= min(size, 16U);
2547 }
2548
2549 return len;
2550 }
2551
2552 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
2553
2554
2555 /*****************************************************************************
2556 *
2557 * driver setup and teardown
2558 *
2559 *****************************************************************************/
2560
2561 static void iwl_setup_deferred_work(struct iwl_priv *priv)
2562 {
2563 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
2564
2565 init_waitqueue_head(&priv->wait_command_queue);
2566
2567 INIT_WORK(&priv->up, iwl_bg_up);
2568 INIT_WORK(&priv->restart, iwl_bg_restart);
2569 INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
2570 INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
2571 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
2572 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
2573 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
2574 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
2575
2576 iwl_setup_scan_deferred_work(priv);
2577 iwl_setup_power_deferred_work(priv);
2578
2579 if (priv->cfg->ops->lib->setup_deferred_work)
2580 priv->cfg->ops->lib->setup_deferred_work(priv);
2581
2582 init_timer(&priv->statistics_periodic);
2583 priv->statistics_periodic.data = (unsigned long)priv;
2584 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
2585
2586 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
2587 iwl_irq_tasklet, (unsigned long)priv);
2588 }
2589
2590 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
2591 {
2592 if (priv->cfg->ops->lib->cancel_deferred_work)
2593 priv->cfg->ops->lib->cancel_deferred_work(priv);
2594
2595 cancel_delayed_work_sync(&priv->init_alive_start);
2596 cancel_delayed_work(&priv->scan_check);
2597 cancel_delayed_work_sync(&priv->set_power_save);
2598 cancel_delayed_work(&priv->alive_start);
2599 cancel_work_sync(&priv->beacon_update);
2600 del_timer_sync(&priv->statistics_periodic);
2601 }
2602
2603 static struct attribute *iwl_sysfs_entries[] = {
2604 &dev_attr_flags.attr,
2605 &dev_attr_filter_flags.attr,
2606 &dev_attr_power_level.attr,
2607 &dev_attr_statistics.attr,
2608 &dev_attr_temperature.attr,
2609 &dev_attr_tx_power.attr,
2610 #ifdef CONFIG_IWLWIFI_DEBUG
2611 &dev_attr_debug_level.attr,
2612 #endif
2613 &dev_attr_version.attr,
2614
2615 NULL
2616 };
2617
2618 static struct attribute_group iwl_attribute_group = {
2619 .name = NULL, /* put in device directory */
2620 .attrs = iwl_sysfs_entries,
2621 };
2622
2623 static struct ieee80211_ops iwl_hw_ops = {
2624 .tx = iwl_mac_tx,
2625 .start = iwl_mac_start,
2626 .stop = iwl_mac_stop,
2627 .add_interface = iwl_mac_add_interface,
2628 .remove_interface = iwl_mac_remove_interface,
2629 .config = iwl_mac_config,
2630 .config_interface = iwl_mac_config_interface,
2631 .configure_filter = iwl_configure_filter,
2632 .set_key = iwl_mac_set_key,
2633 .update_tkip_key = iwl_mac_update_tkip_key,
2634 .get_stats = iwl_mac_get_stats,
2635 .get_tx_stats = iwl_mac_get_tx_stats,
2636 .conf_tx = iwl_mac_conf_tx,
2637 .reset_tsf = iwl_mac_reset_tsf,
2638 .bss_info_changed = iwl_bss_info_changed,
2639 .ampdu_action = iwl_mac_ampdu_action,
2640 .hw_scan = iwl_mac_hw_scan
2641 };
2642
2643 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
2644 {
2645 int err = 0;
2646 struct iwl_priv *priv;
2647 struct ieee80211_hw *hw;
2648 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
2649 unsigned long flags;
2650 u16 pci_cmd;
2651
2652 /************************
2653 * 1. Allocating HW data
2654 ************************/
2655
2656 /* Disabling hardware scan means that mac80211 will perform scans
2657 * "the hard way", rather than using device's scan. */
2658 if (cfg->mod_params->disable_hw_scan) {
2659 if (cfg->mod_params->debug & IWL_DL_INFO)
2660 dev_printk(KERN_DEBUG, &(pdev->dev),
2661 "Disabling hw_scan\n");
2662 iwl_hw_ops.hw_scan = NULL;
2663 }
2664
2665 hw = iwl_alloc_all(cfg, &iwl_hw_ops);
2666 if (!hw) {
2667 err = -ENOMEM;
2668 goto out;
2669 }
2670 priv = hw->priv;
2671 /* At this point both hw and priv are allocated. */
2672
2673 SET_IEEE80211_DEV(hw, &pdev->dev);
2674
2675 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
2676 priv->cfg = cfg;
2677 priv->pci_dev = pdev;
2678
2679 #ifdef CONFIG_IWLWIFI_DEBUG
2680 priv->debug_level = priv->cfg->mod_params->debug;
2681 atomic_set(&priv->restrict_refcnt, 0);
2682 #endif
2683
2684 /**************************
2685 * 2. Initializing PCI bus
2686 **************************/
2687 if (pci_enable_device(pdev)) {
2688 err = -ENODEV;
2689 goto out_ieee80211_free_hw;
2690 }
2691
2692 pci_set_master(pdev);
2693
2694 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
2695 if (!err)
2696 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
2697 if (err) {
2698 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2699 if (!err)
2700 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
2701 /* both attempts failed: */
2702 if (err) {
2703 IWL_WARN(priv, "No suitable DMA available.\n");
2704 goto out_pci_disable_device;
2705 }
2706 }
2707
2708 err = pci_request_regions(pdev, DRV_NAME);
2709 if (err)
2710 goto out_pci_disable_device;
2711
2712 pci_set_drvdata(pdev, priv);
2713
2714
2715 /***********************
2716 * 3. Read REV register
2717 ***********************/
2718 priv->hw_base = pci_iomap(pdev, 0, 0);
2719 if (!priv->hw_base) {
2720 err = -ENODEV;
2721 goto out_pci_release_regions;
2722 }
2723
2724 IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
2725 (unsigned long long) pci_resource_len(pdev, 0));
2726 IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
2727
2728 iwl_hw_detect(priv);
2729 IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s REV=0x%X\n",
2730 priv->cfg->name, priv->hw_rev);
2731
2732 /* We disable the RETRY_TIMEOUT register (0x41) to keep
2733 * PCI Tx retries from interfering with C3 CPU state */
2734 pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
2735
2736 /* amp init */
2737 err = priv->cfg->ops->lib->apm_ops.init(priv);
2738 if (err < 0) {
2739 IWL_ERR(priv, "Failed to init APMG\n");
2740 goto out_iounmap;
2741 }
2742 /*****************
2743 * 4. Read EEPROM
2744 *****************/
2745 /* Read the EEPROM */
2746 err = iwl_eeprom_init(priv);
2747 if (err) {
2748 IWL_ERR(priv, "Unable to init EEPROM\n");
2749 goto out_iounmap;
2750 }
2751 err = iwl_eeprom_check_version(priv);
2752 if (err)
2753 goto out_free_eeprom;
2754
2755 /* extract MAC Address */
2756 iwl_eeprom_get_mac(priv, priv->mac_addr);
2757 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
2758 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
2759
2760 /************************
2761 * 5. Setup HW constants
2762 ************************/
2763 if (iwl_set_hw_params(priv)) {
2764 IWL_ERR(priv, "failed to set hw parameters\n");
2765 goto out_free_eeprom;
2766 }
2767
2768 /*******************
2769 * 6. Setup priv
2770 *******************/
2771
2772 err = iwl_init_drv(priv);
2773 if (err)
2774 goto out_free_eeprom;
2775 /* At this point both hw and priv are initialized. */
2776
2777 /**********************************
2778 * 7. Initialize module parameters
2779 **********************************/
2780
2781 /* Disable radio (SW RF KILL) via parameter when loading driver */
2782 if (priv->cfg->mod_params->disable) {
2783 set_bit(STATUS_RF_KILL_SW, &priv->status);
2784 IWL_DEBUG_INFO(priv, "Radio disabled.\n");
2785 }
2786
2787 /********************
2788 * 8. Setup services
2789 ********************/
2790 spin_lock_irqsave(&priv->lock, flags);
2791 iwl_disable_interrupts(priv);
2792 spin_unlock_irqrestore(&priv->lock, flags);
2793
2794 pci_enable_msi(priv->pci_dev);
2795
2796 err = request_irq(priv->pci_dev->irq, iwl_isr, IRQF_SHARED,
2797 DRV_NAME, priv);
2798 if (err) {
2799 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
2800 goto out_disable_msi;
2801 }
2802 err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
2803 if (err) {
2804 IWL_ERR(priv, "failed to create sysfs device attributes\n");
2805 goto out_free_irq;
2806 }
2807
2808 iwl_setup_deferred_work(priv);
2809 iwl_setup_rx_handlers(priv);
2810
2811 /**********************************
2812 * 9. Setup and register mac80211
2813 **********************************/
2814
2815 /* enable interrupts if needed: hw bug w/a */
2816 pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
2817 if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
2818 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
2819 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
2820 }
2821
2822 iwl_enable_interrupts(priv);
2823
2824 err = iwl_setup_mac(priv);
2825 if (err)
2826 goto out_remove_sysfs;
2827
2828 err = iwl_dbgfs_register(priv, DRV_NAME);
2829 if (err)
2830 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
2831
2832 /* If platform's RF_KILL switch is NOT set to KILL */
2833 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2834 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2835 else
2836 set_bit(STATUS_RF_KILL_HW, &priv->status);
2837
2838 err = iwl_rfkill_init(priv);
2839 if (err)
2840 IWL_ERR(priv, "Unable to initialize RFKILL system. "
2841 "Ignoring error: %d\n", err);
2842 else
2843 iwl_rfkill_set_hw_state(priv);
2844
2845 iwl_power_initialize(priv);
2846 return 0;
2847
2848 out_remove_sysfs:
2849 destroy_workqueue(priv->workqueue);
2850 priv->workqueue = NULL;
2851 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
2852 out_free_irq:
2853 free_irq(priv->pci_dev->irq, priv);
2854 out_disable_msi:
2855 pci_disable_msi(priv->pci_dev);
2856 iwl_uninit_drv(priv);
2857 out_free_eeprom:
2858 iwl_eeprom_free(priv);
2859 out_iounmap:
2860 pci_iounmap(pdev, priv->hw_base);
2861 out_pci_release_regions:
2862 pci_set_drvdata(pdev, NULL);
2863 pci_release_regions(pdev);
2864 out_pci_disable_device:
2865 pci_disable_device(pdev);
2866 out_ieee80211_free_hw:
2867 ieee80211_free_hw(priv->hw);
2868 out:
2869 return err;
2870 }
2871
2872 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
2873 {
2874 struct iwl_priv *priv = pci_get_drvdata(pdev);
2875 unsigned long flags;
2876
2877 if (!priv)
2878 return;
2879
2880 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
2881
2882 iwl_dbgfs_unregister(priv);
2883 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
2884
2885 /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
2886 * to be called and iwl_down since we are removing the device
2887 * we need to set STATUS_EXIT_PENDING bit.
2888 */
2889 set_bit(STATUS_EXIT_PENDING, &priv->status);
2890 if (priv->mac80211_registered) {
2891 ieee80211_unregister_hw(priv->hw);
2892 priv->mac80211_registered = 0;
2893 } else {
2894 iwl_down(priv);
2895 }
2896
2897 /* make sure we flush any pending irq or
2898 * tasklet for the driver
2899 */
2900 spin_lock_irqsave(&priv->lock, flags);
2901 iwl_disable_interrupts(priv);
2902 spin_unlock_irqrestore(&priv->lock, flags);
2903
2904 iwl_synchronize_irq(priv);
2905
2906 iwl_rfkill_unregister(priv);
2907 iwl_dealloc_ucode_pci(priv);
2908
2909 if (priv->rxq.bd)
2910 iwl_rx_queue_free(priv, &priv->rxq);
2911 iwl_hw_txq_ctx_free(priv);
2912
2913 priv->cfg->ops->smgmt->clear_station_table(priv);
2914 iwl_eeprom_free(priv);
2915
2916
2917 /*netif_stop_queue(dev); */
2918 flush_workqueue(priv->workqueue);
2919
2920 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
2921 * priv->workqueue... so we can't take down the workqueue
2922 * until now... */
2923 destroy_workqueue(priv->workqueue);
2924 priv->workqueue = NULL;
2925
2926 free_irq(priv->pci_dev->irq, priv);
2927 pci_disable_msi(priv->pci_dev);
2928 pci_iounmap(pdev, priv->hw_base);
2929 pci_release_regions(pdev);
2930 pci_disable_device(pdev);
2931 pci_set_drvdata(pdev, NULL);
2932
2933 iwl_uninit_drv(priv);
2934
2935 if (priv->ibss_beacon)
2936 dev_kfree_skb(priv->ibss_beacon);
2937
2938 ieee80211_free_hw(priv->hw);
2939 }
2940
2941
2942 /*****************************************************************************
2943 *
2944 * driver and module entry point
2945 *
2946 *****************************************************************************/
2947
2948 /* Hardware specific file defines the PCI IDs table for that hardware module */
2949 static struct pci_device_id iwl_hw_card_ids[] = {
2950 #ifdef CONFIG_IWL4965
2951 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
2952 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
2953 #endif /* CONFIG_IWL4965 */
2954 #ifdef CONFIG_IWL5000
2955 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
2956 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
2957 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
2958 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
2959 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
2960 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
2961 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
2962 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
2963 {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
2964 {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
2965 /* 5350 WiFi/WiMax */
2966 {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
2967 {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
2968 {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
2969 /* 5150 Wifi/WiMax */
2970 {IWL_PCI_DEVICE(0x423C, PCI_ANY_ID, iwl5150_agn_cfg)},
2971 {IWL_PCI_DEVICE(0x423D, PCI_ANY_ID, iwl5150_agn_cfg)},
2972 /* 6000/6050 Series */
2973 {IWL_PCI_DEVICE(0x0082, 0x1102, iwl6000_2ag_cfg)},
2974 {IWL_PCI_DEVICE(0x0085, 0x1112, iwl6000_2ag_cfg)},
2975 {IWL_PCI_DEVICE(0x0082, 0x1122, iwl6000_2ag_cfg)},
2976 {IWL_PCI_DEVICE(0x422B, PCI_ANY_ID, iwl6000_3agn_cfg)},
2977 {IWL_PCI_DEVICE(0x4238, PCI_ANY_ID, iwl6000_3agn_cfg)},
2978 {IWL_PCI_DEVICE(0x0082, PCI_ANY_ID, iwl6000_2agn_cfg)},
2979 {IWL_PCI_DEVICE(0x0085, PCI_ANY_ID, iwl6000_3agn_cfg)},
2980 {IWL_PCI_DEVICE(0x0086, PCI_ANY_ID, iwl6050_3agn_cfg)},
2981 {IWL_PCI_DEVICE(0x0087, PCI_ANY_ID, iwl6050_2agn_cfg)},
2982 {IWL_PCI_DEVICE(0x0088, PCI_ANY_ID, iwl6050_3agn_cfg)},
2983 {IWL_PCI_DEVICE(0x0089, PCI_ANY_ID, iwl6050_2agn_cfg)},
2984 /* 1000 Series WiFi */
2985 {IWL_PCI_DEVICE(0x0083, PCI_ANY_ID, iwl1000_bgn_cfg)},
2986 {IWL_PCI_DEVICE(0x0084, PCI_ANY_ID, iwl1000_bgn_cfg)},
2987 #endif /* CONFIG_IWL5000 */
2988
2989 {0}
2990 };
2991 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
2992
2993 static struct pci_driver iwl_driver = {
2994 .name = DRV_NAME,
2995 .id_table = iwl_hw_card_ids,
2996 .probe = iwl_pci_probe,
2997 .remove = __devexit_p(iwl_pci_remove),
2998 #ifdef CONFIG_PM
2999 .suspend = iwl_pci_suspend,
3000 .resume = iwl_pci_resume,
3001 #endif
3002 };
3003
3004 static int __init iwl_init(void)
3005 {
3006
3007 int ret;
3008 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
3009 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
3010
3011 ret = iwlagn_rate_control_register();
3012 if (ret) {
3013 printk(KERN_ERR DRV_NAME
3014 "Unable to register rate control algorithm: %d\n", ret);
3015 return ret;
3016 }
3017
3018 ret = pci_register_driver(&iwl_driver);
3019 if (ret) {
3020 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
3021 goto error_register;
3022 }
3023
3024 return ret;
3025
3026 error_register:
3027 iwlagn_rate_control_unregister();
3028 return ret;
3029 }
3030
3031 static void __exit iwl_exit(void)
3032 {
3033 pci_unregister_driver(&iwl_driver);
3034 iwlagn_rate_control_unregister();
3035 }
3036
3037 module_exit(iwl_exit);
3038 module_init(iwl_init);
Linux kernel - Deliverables
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