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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
[mirror_ubuntu-bionic-kernel.git] / drivers / net / wireless / iwlwifi / iwl-agn.c
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2010 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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
31
32 #include <linux/kernel.h>
33 #include <linux/module.h>
34 #include <linux/init.h>
35 #include <linux/pci.h>
36 #include <linux/pci-aspm.h>
37 #include <linux/slab.h>
38 #include <linux/dma-mapping.h>
39 #include <linux/delay.h>
40 #include <linux/sched.h>
41 #include <linux/skbuff.h>
42 #include <linux/netdevice.h>
43 #include <linux/wireless.h>
44 #include <linux/firmware.h>
45 #include <linux/etherdevice.h>
46 #include <linux/if_arp.h>
47
48 #include <net/mac80211.h>
49
50 #include <asm/div64.h>
51
52 #define DRV_NAME "iwlagn"
53
54 #include "iwl-eeprom.h"
55 #include "iwl-dev.h"
56 #include "iwl-core.h"
57 #include "iwl-io.h"
58 #include "iwl-helpers.h"
59 #include "iwl-sta.h"
60 #include "iwl-agn-calib.h"
61 #include "iwl-agn.h"
62
63
64 /******************************************************************************
65 *
66 * module boiler plate
67 *
68 ******************************************************************************/
69
70 /*
71 * module name, copyright, version, etc.
72 */
73 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
74
75 #ifdef CONFIG_IWLWIFI_DEBUG
76 #define VD "d"
77 #else
78 #define VD
79 #endif
80
81 #define DRV_VERSION IWLWIFI_VERSION VD
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 static int iwlagn_ant_coupling;
91 static bool iwlagn_bt_ch_announce = 1;
92
93 void iwl_update_chain_flags(struct iwl_priv *priv)
94 {
95 struct iwl_rxon_context *ctx;
96
97 if (priv->cfg->ops->hcmd->set_rxon_chain) {
98 for_each_context(priv, ctx) {
99 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
100 if (ctx->active.rx_chain != ctx->staging.rx_chain)
101 iwlcore_commit_rxon(priv, ctx);
102 }
103 }
104 }
105
106 static void iwl_clear_free_frames(struct iwl_priv *priv)
107 {
108 struct list_head *element;
109
110 IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
111 priv->frames_count);
112
113 while (!list_empty(&priv->free_frames)) {
114 element = priv->free_frames.next;
115 list_del(element);
116 kfree(list_entry(element, struct iwl_frame, list));
117 priv->frames_count--;
118 }
119
120 if (priv->frames_count) {
121 IWL_WARN(priv, "%d frames still in use. Did we lose one?\n",
122 priv->frames_count);
123 priv->frames_count = 0;
124 }
125 }
126
127 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
128 {
129 struct iwl_frame *frame;
130 struct list_head *element;
131 if (list_empty(&priv->free_frames)) {
132 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
133 if (!frame) {
134 IWL_ERR(priv, "Could not allocate frame!\n");
135 return NULL;
136 }
137
138 priv->frames_count++;
139 return frame;
140 }
141
142 element = priv->free_frames.next;
143 list_del(element);
144 return list_entry(element, struct iwl_frame, list);
145 }
146
147 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
148 {
149 memset(frame, 0, sizeof(*frame));
150 list_add(&frame->list, &priv->free_frames);
151 }
152
153 static u32 iwl_fill_beacon_frame(struct iwl_priv *priv,
154 struct ieee80211_hdr *hdr,
155 int left)
156 {
157 lockdep_assert_held(&priv->mutex);
158
159 if (!priv->beacon_skb)
160 return 0;
161
162 if (priv->beacon_skb->len > left)
163 return 0;
164
165 memcpy(hdr, priv->beacon_skb->data, priv->beacon_skb->len);
166
167 return priv->beacon_skb->len;
168 }
169
170 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
171 static void iwl_set_beacon_tim(struct iwl_priv *priv,
172 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
173 u8 *beacon, u32 frame_size)
174 {
175 u16 tim_idx;
176 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
177
178 /*
179 * The index is relative to frame start but we start looking at the
180 * variable-length part of the beacon.
181 */
182 tim_idx = mgmt->u.beacon.variable - beacon;
183
184 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
185 while ((tim_idx < (frame_size - 2)) &&
186 (beacon[tim_idx] != WLAN_EID_TIM))
187 tim_idx += beacon[tim_idx+1] + 2;
188
189 /* If TIM field was found, set variables */
190 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
191 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
192 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
193 } else
194 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
195 }
196
197 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv,
198 struct iwl_frame *frame)
199 {
200 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
201 u32 frame_size;
202 u32 rate_flags;
203 u32 rate;
204 /*
205 * We have to set up the TX command, the TX Beacon command, and the
206 * beacon contents.
207 */
208
209 lockdep_assert_held(&priv->mutex);
210
211 if (!priv->beacon_ctx) {
212 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
213 return 0;
214 }
215
216 /* Initialize memory */
217 tx_beacon_cmd = &frame->u.beacon;
218 memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
219
220 /* Set up TX beacon contents */
221 frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
222 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
223 if (WARN_ON_ONCE(frame_size > MAX_MPDU_SIZE))
224 return 0;
225 if (!frame_size)
226 return 0;
227
228 /* Set up TX command fields */
229 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
230 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
231 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
232 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
233 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
234
235 /* Set up TX beacon command fields */
236 iwl_set_beacon_tim(priv, tx_beacon_cmd, (u8 *)tx_beacon_cmd->frame,
237 frame_size);
238
239 /* Set up packet rate and flags */
240 rate = iwl_rate_get_lowest_plcp(priv, priv->beacon_ctx);
241 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
242 priv->hw_params.valid_tx_ant);
243 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
244 if ((rate >= IWL_FIRST_CCK_RATE) && (rate <= IWL_LAST_CCK_RATE))
245 rate_flags |= RATE_MCS_CCK_MSK;
246 tx_beacon_cmd->tx.rate_n_flags = iwl_hw_set_rate_n_flags(rate,
247 rate_flags);
248
249 return sizeof(*tx_beacon_cmd) + frame_size;
250 }
251
252 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
253 {
254 struct iwl_frame *frame;
255 unsigned int frame_size;
256 int rc;
257
258 frame = iwl_get_free_frame(priv);
259 if (!frame) {
260 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
261 "command.\n");
262 return -ENOMEM;
263 }
264
265 frame_size = iwl_hw_get_beacon_cmd(priv, frame);
266 if (!frame_size) {
267 IWL_ERR(priv, "Error configuring the beacon command\n");
268 iwl_free_frame(priv, frame);
269 return -EINVAL;
270 }
271
272 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
273 &frame->u.cmd[0]);
274
275 iwl_free_frame(priv, frame);
276
277 return rc;
278 }
279
280 static inline dma_addr_t iwl_tfd_tb_get_addr(struct iwl_tfd *tfd, u8 idx)
281 {
282 struct iwl_tfd_tb *tb = &tfd->tbs[idx];
283
284 dma_addr_t addr = get_unaligned_le32(&tb->lo);
285 if (sizeof(dma_addr_t) > sizeof(u32))
286 addr |=
287 ((dma_addr_t)(le16_to_cpu(tb->hi_n_len) & 0xF) << 16) << 16;
288
289 return addr;
290 }
291
292 static inline u16 iwl_tfd_tb_get_len(struct iwl_tfd *tfd, u8 idx)
293 {
294 struct iwl_tfd_tb *tb = &tfd->tbs[idx];
295
296 return le16_to_cpu(tb->hi_n_len) >> 4;
297 }
298
299 static inline void iwl_tfd_set_tb(struct iwl_tfd *tfd, u8 idx,
300 dma_addr_t addr, u16 len)
301 {
302 struct iwl_tfd_tb *tb = &tfd->tbs[idx];
303 u16 hi_n_len = len << 4;
304
305 put_unaligned_le32(addr, &tb->lo);
306 if (sizeof(dma_addr_t) > sizeof(u32))
307 hi_n_len |= ((addr >> 16) >> 16) & 0xF;
308
309 tb->hi_n_len = cpu_to_le16(hi_n_len);
310
311 tfd->num_tbs = idx + 1;
312 }
313
314 static inline u8 iwl_tfd_get_num_tbs(struct iwl_tfd *tfd)
315 {
316 return tfd->num_tbs & 0x1f;
317 }
318
319 /**
320 * iwl_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr]
321 * @priv - driver private data
322 * @txq - tx queue
323 *
324 * Does NOT advance any TFD circular buffer read/write indexes
325 * Does NOT free the TFD itself (which is within circular buffer)
326 */
327 void iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
328 {
329 struct iwl_tfd *tfd_tmp = (struct iwl_tfd *)txq->tfds;
330 struct iwl_tfd *tfd;
331 struct pci_dev *dev = priv->pci_dev;
332 int index = txq->q.read_ptr;
333 int i;
334 int num_tbs;
335
336 tfd = &tfd_tmp[index];
337
338 /* Sanity check on number of chunks */
339 num_tbs = iwl_tfd_get_num_tbs(tfd);
340
341 if (num_tbs >= IWL_NUM_OF_TBS) {
342 IWL_ERR(priv, "Too many chunks: %i\n", num_tbs);
343 /* @todo issue fatal error, it is quite serious situation */
344 return;
345 }
346
347 /* Unmap tx_cmd */
348 if (num_tbs)
349 pci_unmap_single(dev,
350 dma_unmap_addr(&txq->meta[index], mapping),
351 dma_unmap_len(&txq->meta[index], len),
352 PCI_DMA_BIDIRECTIONAL);
353
354 /* Unmap chunks, if any. */
355 for (i = 1; i < num_tbs; i++)
356 pci_unmap_single(dev, iwl_tfd_tb_get_addr(tfd, i),
357 iwl_tfd_tb_get_len(tfd, i), PCI_DMA_TODEVICE);
358
359 /* free SKB */
360 if (txq->txb) {
361 struct sk_buff *skb;
362
363 skb = txq->txb[txq->q.read_ptr].skb;
364
365 /* can be called from irqs-disabled context */
366 if (skb) {
367 dev_kfree_skb_any(skb);
368 txq->txb[txq->q.read_ptr].skb = NULL;
369 }
370 }
371 }
372
373 int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
374 struct iwl_tx_queue *txq,
375 dma_addr_t addr, u16 len,
376 u8 reset, u8 pad)
377 {
378 struct iwl_queue *q;
379 struct iwl_tfd *tfd, *tfd_tmp;
380 u32 num_tbs;
381
382 q = &txq->q;
383 tfd_tmp = (struct iwl_tfd *)txq->tfds;
384 tfd = &tfd_tmp[q->write_ptr];
385
386 if (reset)
387 memset(tfd, 0, sizeof(*tfd));
388
389 num_tbs = iwl_tfd_get_num_tbs(tfd);
390
391 /* Each TFD can point to a maximum 20 Tx buffers */
392 if (num_tbs >= IWL_NUM_OF_TBS) {
393 IWL_ERR(priv, "Error can not send more than %d chunks\n",
394 IWL_NUM_OF_TBS);
395 return -EINVAL;
396 }
397
398 BUG_ON(addr & ~DMA_BIT_MASK(36));
399 if (unlikely(addr & ~IWL_TX_DMA_MASK))
400 IWL_ERR(priv, "Unaligned address = %llx\n",
401 (unsigned long long)addr);
402
403 iwl_tfd_set_tb(tfd, num_tbs, addr, len);
404
405 return 0;
406 }
407
408 /*
409 * Tell nic where to find circular buffer of Tx Frame Descriptors for
410 * given Tx queue, and enable the DMA channel used for that queue.
411 *
412 * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA
413 * channels supported in hardware.
414 */
415 int iwl_hw_tx_queue_init(struct iwl_priv *priv,
416 struct iwl_tx_queue *txq)
417 {
418 int txq_id = txq->q.id;
419
420 /* Circular buffer (TFD queue in DRAM) physical base address */
421 iwl_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id),
422 txq->q.dma_addr >> 8);
423
424 return 0;
425 }
426
427 /******************************************************************************
428 *
429 * Generic RX handler implementations
430 *
431 ******************************************************************************/
432 static void iwl_rx_reply_alive(struct iwl_priv *priv,
433 struct iwl_rx_mem_buffer *rxb)
434 {
435 struct iwl_rx_packet *pkt = rxb_addr(rxb);
436 struct iwl_alive_resp *palive;
437 struct delayed_work *pwork;
438
439 palive = &pkt->u.alive_frame;
440
441 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
442 "0x%01X 0x%01X\n",
443 palive->is_valid, palive->ver_type,
444 palive->ver_subtype);
445
446 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
447 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
448 memcpy(&priv->card_alive_init,
449 &pkt->u.alive_frame,
450 sizeof(struct iwl_init_alive_resp));
451 pwork = &priv->init_alive_start;
452 } else {
453 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
454 memcpy(&priv->card_alive, &pkt->u.alive_frame,
455 sizeof(struct iwl_alive_resp));
456 pwork = &priv->alive_start;
457 }
458
459 /* We delay the ALIVE response by 5ms to
460 * give the HW RF Kill time to activate... */
461 if (palive->is_valid == UCODE_VALID_OK)
462 queue_delayed_work(priv->workqueue, pwork,
463 msecs_to_jiffies(5));
464 else
465 IWL_WARN(priv, "uCode did not respond OK.\n");
466 }
467
468 static void iwl_bg_beacon_update(struct work_struct *work)
469 {
470 struct iwl_priv *priv =
471 container_of(work, struct iwl_priv, beacon_update);
472 struct sk_buff *beacon;
473
474 mutex_lock(&priv->mutex);
475 if (!priv->beacon_ctx) {
476 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
477 goto out;
478 }
479
480 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
481 /*
482 * The ucode will send beacon notifications even in
483 * IBSS mode, but we don't want to process them. But
484 * we need to defer the type check to here due to
485 * requiring locking around the beacon_ctx access.
486 */
487 goto out;
488 }
489
490 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
491 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
492 if (!beacon) {
493 IWL_ERR(priv, "update beacon failed -- keeping old\n");
494 goto out;
495 }
496
497 /* new beacon skb is allocated every time; dispose previous.*/
498 dev_kfree_skb(priv->beacon_skb);
499
500 priv->beacon_skb = beacon;
501
502 iwlagn_send_beacon_cmd(priv);
503 out:
504 mutex_unlock(&priv->mutex);
505 }
506
507 static void iwl_bg_bt_runtime_config(struct work_struct *work)
508 {
509 struct iwl_priv *priv =
510 container_of(work, struct iwl_priv, bt_runtime_config);
511
512 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
513 return;
514
515 /* dont send host command if rf-kill is on */
516 if (!iwl_is_ready_rf(priv))
517 return;
518 priv->cfg->ops->hcmd->send_bt_config(priv);
519 }
520
521 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
522 {
523 struct iwl_priv *priv =
524 container_of(work, struct iwl_priv, bt_full_concurrency);
525 struct iwl_rxon_context *ctx;
526
527 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
528 return;
529
530 /* dont send host command if rf-kill is on */
531 if (!iwl_is_ready_rf(priv))
532 return;
533
534 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
535 priv->bt_full_concurrent ?
536 "full concurrency" : "3-wire");
537
538 /*
539 * LQ & RXON updated cmds must be sent before BT Config cmd
540 * to avoid 3-wire collisions
541 */
542 mutex_lock(&priv->mutex);
543 for_each_context(priv, ctx) {
544 if (priv->cfg->ops->hcmd->set_rxon_chain)
545 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
546 iwlcore_commit_rxon(priv, ctx);
547 }
548 mutex_unlock(&priv->mutex);
549
550 priv->cfg->ops->hcmd->send_bt_config(priv);
551 }
552
553 /**
554 * iwl_bg_statistics_periodic - Timer callback to queue statistics
555 *
556 * This callback is provided in order to send a statistics request.
557 *
558 * This timer function is continually reset to execute within
559 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
560 * was received. We need to ensure we receive the statistics in order
561 * to update the temperature used for calibrating the TXPOWER.
562 */
563 static void iwl_bg_statistics_periodic(unsigned long data)
564 {
565 struct iwl_priv *priv = (struct iwl_priv *)data;
566
567 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
568 return;
569
570 /* dont send host command if rf-kill is on */
571 if (!iwl_is_ready_rf(priv))
572 return;
573
574 iwl_send_statistics_request(priv, CMD_ASYNC, false);
575 }
576
577
578 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
579 u32 start_idx, u32 num_events,
580 u32 mode)
581 {
582 u32 i;
583 u32 ptr; /* SRAM byte address of log data */
584 u32 ev, time, data; /* event log data */
585 unsigned long reg_flags;
586
587 if (mode == 0)
588 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
589 else
590 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
591
592 /* Make sure device is powered up for SRAM reads */
593 spin_lock_irqsave(&priv->reg_lock, reg_flags);
594 if (iwl_grab_nic_access(priv)) {
595 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
596 return;
597 }
598
599 /* Set starting address; reads will auto-increment */
600 _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
601 rmb();
602
603 /*
604 * "time" is actually "data" for mode 0 (no timestamp).
605 * place event id # at far right for easier visual parsing.
606 */
607 for (i = 0; i < num_events; i++) {
608 ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
609 time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
610 if (mode == 0) {
611 trace_iwlwifi_dev_ucode_cont_event(priv,
612 0, time, ev);
613 } else {
614 data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
615 trace_iwlwifi_dev_ucode_cont_event(priv,
616 time, data, ev);
617 }
618 }
619 /* Allow device to power down */
620 iwl_release_nic_access(priv);
621 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
622 }
623
624 static void iwl_continuous_event_trace(struct iwl_priv *priv)
625 {
626 u32 capacity; /* event log capacity in # entries */
627 u32 base; /* SRAM byte address of event log header */
628 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
629 u32 num_wraps; /* # times uCode wrapped to top of log */
630 u32 next_entry; /* index of next entry to be written by uCode */
631
632 if (priv->ucode_type == UCODE_INIT)
633 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
634 else
635 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
636 if (priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
637 capacity = iwl_read_targ_mem(priv, base);
638 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
639 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
640 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
641 } else
642 return;
643
644 if (num_wraps == priv->event_log.num_wraps) {
645 iwl_print_cont_event_trace(priv,
646 base, priv->event_log.next_entry,
647 next_entry - priv->event_log.next_entry,
648 mode);
649 priv->event_log.non_wraps_count++;
650 } else {
651 if ((num_wraps - priv->event_log.num_wraps) > 1)
652 priv->event_log.wraps_more_count++;
653 else
654 priv->event_log.wraps_once_count++;
655 trace_iwlwifi_dev_ucode_wrap_event(priv,
656 num_wraps - priv->event_log.num_wraps,
657 next_entry, priv->event_log.next_entry);
658 if (next_entry < priv->event_log.next_entry) {
659 iwl_print_cont_event_trace(priv, base,
660 priv->event_log.next_entry,
661 capacity - priv->event_log.next_entry,
662 mode);
663
664 iwl_print_cont_event_trace(priv, base, 0,
665 next_entry, mode);
666 } else {
667 iwl_print_cont_event_trace(priv, base,
668 next_entry, capacity - next_entry,
669 mode);
670
671 iwl_print_cont_event_trace(priv, base, 0,
672 next_entry, mode);
673 }
674 }
675 priv->event_log.num_wraps = num_wraps;
676 priv->event_log.next_entry = next_entry;
677 }
678
679 /**
680 * iwl_bg_ucode_trace - Timer callback to log ucode event
681 *
682 * The timer is continually set to execute every
683 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
684 * this function is to perform continuous uCode event logging operation
685 * if enabled
686 */
687 static void iwl_bg_ucode_trace(unsigned long data)
688 {
689 struct iwl_priv *priv = (struct iwl_priv *)data;
690
691 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
692 return;
693
694 if (priv->event_log.ucode_trace) {
695 iwl_continuous_event_trace(priv);
696 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
697 mod_timer(&priv->ucode_trace,
698 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
699 }
700 }
701
702 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
703 struct iwl_rx_mem_buffer *rxb)
704 {
705 struct iwl_rx_packet *pkt = rxb_addr(rxb);
706 struct iwl4965_beacon_notif *beacon =
707 (struct iwl4965_beacon_notif *)pkt->u.raw;
708 #ifdef CONFIG_IWLWIFI_DEBUG
709 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
710
711 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
712 "tsf %d %d rate %d\n",
713 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
714 beacon->beacon_notify_hdr.failure_frame,
715 le32_to_cpu(beacon->ibss_mgr_status),
716 le32_to_cpu(beacon->high_tsf),
717 le32_to_cpu(beacon->low_tsf), rate);
718 #endif
719
720 priv->ibss_manager = le32_to_cpu(beacon->ibss_mgr_status);
721
722 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
723 queue_work(priv->workqueue, &priv->beacon_update);
724 }
725
726 /* Handle notification from uCode that card's power state is changing
727 * due to software, hardware, or critical temperature RFKILL */
728 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
729 struct iwl_rx_mem_buffer *rxb)
730 {
731 struct iwl_rx_packet *pkt = rxb_addr(rxb);
732 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
733 unsigned long status = priv->status;
734
735 IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s CT:%s\n",
736 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
737 (flags & SW_CARD_DISABLED) ? "Kill" : "On",
738 (flags & CT_CARD_DISABLED) ?
739 "Reached" : "Not reached");
740
741 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
742 CT_CARD_DISABLED)) {
743
744 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
745 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
746
747 iwl_write_direct32(priv, HBUS_TARG_MBX_C,
748 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
749
750 if (!(flags & RXON_CARD_DISABLED)) {
751 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
752 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
753 iwl_write_direct32(priv, HBUS_TARG_MBX_C,
754 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
755 }
756 if (flags & CT_CARD_DISABLED)
757 iwl_tt_enter_ct_kill(priv);
758 }
759 if (!(flags & CT_CARD_DISABLED))
760 iwl_tt_exit_ct_kill(priv);
761
762 if (flags & HW_CARD_DISABLED)
763 set_bit(STATUS_RF_KILL_HW, &priv->status);
764 else
765 clear_bit(STATUS_RF_KILL_HW, &priv->status);
766
767
768 if (!(flags & RXON_CARD_DISABLED))
769 iwl_scan_cancel(priv);
770
771 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
772 test_bit(STATUS_RF_KILL_HW, &priv->status)))
773 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
774 test_bit(STATUS_RF_KILL_HW, &priv->status));
775 else
776 wake_up_interruptible(&priv->wait_command_queue);
777 }
778
779 static void iwl_bg_tx_flush(struct work_struct *work)
780 {
781 struct iwl_priv *priv =
782 container_of(work, struct iwl_priv, tx_flush);
783
784 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
785 return;
786
787 /* do nothing if rf-kill is on */
788 if (!iwl_is_ready_rf(priv))
789 return;
790
791 if (priv->cfg->ops->lib->txfifo_flush) {
792 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
793 iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
794 }
795 }
796
797 /**
798 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
799 *
800 * Setup the RX handlers for each of the reply types sent from the uCode
801 * to the host.
802 *
803 * This function chains into the hardware specific files for them to setup
804 * any hardware specific handlers as well.
805 */
806 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
807 {
808 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
809 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
810 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
811 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
812 iwl_rx_spectrum_measure_notif;
813 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
814 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
815 iwl_rx_pm_debug_statistics_notif;
816 priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
817
818 /*
819 * The same handler is used for both the REPLY to a discrete
820 * statistics request from the host as well as for the periodic
821 * statistics notifications (after received beacons) from the uCode.
822 */
823 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_reply_statistics;
824 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
825
826 iwl_setup_rx_scan_handlers(priv);
827
828 /* status change handler */
829 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
830
831 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
832 iwl_rx_missed_beacon_notif;
833 /* Rx handlers */
834 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwlagn_rx_reply_rx_phy;
835 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwlagn_rx_reply_rx;
836 /* block ack */
837 priv->rx_handlers[REPLY_COMPRESSED_BA] = iwlagn_rx_reply_compressed_ba;
838 /* Set up hardware specific Rx handlers */
839 priv->cfg->ops->lib->rx_handler_setup(priv);
840 }
841
842 /**
843 * iwl_rx_handle - Main entry function for receiving responses from uCode
844 *
845 * Uses the priv->rx_handlers callback function array to invoke
846 * the appropriate handlers, including command responses,
847 * frame-received notifications, and other notifications.
848 */
849 void iwl_rx_handle(struct iwl_priv *priv)
850 {
851 struct iwl_rx_mem_buffer *rxb;
852 struct iwl_rx_packet *pkt;
853 struct iwl_rx_queue *rxq = &priv->rxq;
854 u32 r, i;
855 int reclaim;
856 unsigned long flags;
857 u8 fill_rx = 0;
858 u32 count = 8;
859 int total_empty;
860
861 /* uCode's read index (stored in shared DRAM) indicates the last Rx
862 * buffer that the driver may process (last buffer filled by ucode). */
863 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
864 i = rxq->read;
865
866 /* Rx interrupt, but nothing sent from uCode */
867 if (i == r)
868 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
869
870 /* calculate total frames need to be restock after handling RX */
871 total_empty = r - rxq->write_actual;
872 if (total_empty < 0)
873 total_empty += RX_QUEUE_SIZE;
874
875 if (total_empty > (RX_QUEUE_SIZE / 2))
876 fill_rx = 1;
877
878 while (i != r) {
879 int len;
880
881 rxb = rxq->queue[i];
882
883 /* If an RXB doesn't have a Rx queue slot associated with it,
884 * then a bug has been introduced in the queue refilling
885 * routines -- catch it here */
886 BUG_ON(rxb == NULL);
887
888 rxq->queue[i] = NULL;
889
890 pci_unmap_page(priv->pci_dev, rxb->page_dma,
891 PAGE_SIZE << priv->hw_params.rx_page_order,
892 PCI_DMA_FROMDEVICE);
893 pkt = rxb_addr(rxb);
894
895 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
896 len += sizeof(u32); /* account for status word */
897 trace_iwlwifi_dev_rx(priv, pkt, len);
898
899 /* Reclaim a command buffer only if this packet is a response
900 * to a (driver-originated) command.
901 * If the packet (e.g. Rx frame) originated from uCode,
902 * there is no command buffer to reclaim.
903 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
904 * but apparently a few don't get set; catch them here. */
905 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
906 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
907 (pkt->hdr.cmd != REPLY_RX) &&
908 (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
909 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
910 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
911 (pkt->hdr.cmd != REPLY_TX);
912
913 /* Based on type of command response or notification,
914 * handle those that need handling via function in
915 * rx_handlers table. See iwl_setup_rx_handlers() */
916 if (priv->rx_handlers[pkt->hdr.cmd]) {
917 IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r,
918 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
919 priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
920 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
921 } else {
922 /* No handling needed */
923 IWL_DEBUG_RX(priv,
924 "r %d i %d No handler needed for %s, 0x%02x\n",
925 r, i, get_cmd_string(pkt->hdr.cmd),
926 pkt->hdr.cmd);
927 }
928
929 /*
930 * XXX: After here, we should always check rxb->page
931 * against NULL before touching it or its virtual
932 * memory (pkt). Because some rx_handler might have
933 * already taken or freed the pages.
934 */
935
936 if (reclaim) {
937 /* Invoke any callbacks, transfer the buffer to caller,
938 * and fire off the (possibly) blocking iwl_send_cmd()
939 * as we reclaim the driver command queue */
940 if (rxb->page)
941 iwl_tx_cmd_complete(priv, rxb);
942 else
943 IWL_WARN(priv, "Claim null rxb?\n");
944 }
945
946 /* Reuse the page if possible. For notification packets and
947 * SKBs that fail to Rx correctly, add them back into the
948 * rx_free list for reuse later. */
949 spin_lock_irqsave(&rxq->lock, flags);
950 if (rxb->page != NULL) {
951 rxb->page_dma = pci_map_page(priv->pci_dev, rxb->page,
952 0, PAGE_SIZE << priv->hw_params.rx_page_order,
953 PCI_DMA_FROMDEVICE);
954 list_add_tail(&rxb->list, &rxq->rx_free);
955 rxq->free_count++;
956 } else
957 list_add_tail(&rxb->list, &rxq->rx_used);
958
959 spin_unlock_irqrestore(&rxq->lock, flags);
960
961 i = (i + 1) & RX_QUEUE_MASK;
962 /* If there are a lot of unused frames,
963 * restock the Rx queue so ucode wont assert. */
964 if (fill_rx) {
965 count++;
966 if (count >= 8) {
967 rxq->read = i;
968 iwlagn_rx_replenish_now(priv);
969 count = 0;
970 }
971 }
972 }
973
974 /* Backtrack one entry */
975 rxq->read = i;
976 if (fill_rx)
977 iwlagn_rx_replenish_now(priv);
978 else
979 iwlagn_rx_queue_restock(priv);
980 }
981
982 /* call this function to flush any scheduled tasklet */
983 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
984 {
985 /* wait to make sure we flush pending tasklet*/
986 synchronize_irq(priv->pci_dev->irq);
987 tasklet_kill(&priv->irq_tasklet);
988 }
989
990 static void iwl_irq_tasklet_legacy(struct iwl_priv *priv)
991 {
992 u32 inta, handled = 0;
993 u32 inta_fh;
994 unsigned long flags;
995 u32 i;
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 (iwl_get_debug_level(priv) & 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 spin_unlock_irqrestore(&priv->lock, flags);
1024
1025 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1026 * atomic, make sure that inta covers all the interrupts that
1027 * we've discovered, even if FH interrupt came in just after
1028 * reading CSR_INT. */
1029 if (inta_fh & CSR49_FH_INT_RX_MASK)
1030 inta |= CSR_INT_BIT_FH_RX;
1031 if (inta_fh & CSR49_FH_INT_TX_MASK)
1032 inta |= CSR_INT_BIT_FH_TX;
1033
1034 /* Now service all interrupt bits discovered above. */
1035 if (inta & CSR_INT_BIT_HW_ERR) {
1036 IWL_ERR(priv, "Hardware error detected. Restarting.\n");
1037
1038 /* Tell the device to stop sending interrupts */
1039 iwl_disable_interrupts(priv);
1040
1041 priv->isr_stats.hw++;
1042 iwl_irq_handle_error(priv);
1043
1044 handled |= CSR_INT_BIT_HW_ERR;
1045
1046 return;
1047 }
1048
1049 #ifdef CONFIG_IWLWIFI_DEBUG
1050 if (iwl_get_debug_level(priv) & (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_WARN(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 wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_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 iwl_irq_handle_error(priv);
1109 handled |= CSR_INT_BIT_SW_ERR;
1110 }
1111
1112 /*
1113 * uCode wakes up after power-down sleep.
1114 * Tell device about any new tx or host commands enqueued,
1115 * and about any Rx buffers made available while asleep.
1116 */
1117 if (inta & CSR_INT_BIT_WAKEUP) {
1118 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1119 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1120 for (i = 0; i < priv->hw_params.max_txq_num; i++)
1121 iwl_txq_update_write_ptr(priv, &priv->txq[i]);
1122 priv->isr_stats.wakeup++;
1123 handled |= CSR_INT_BIT_WAKEUP;
1124 }
1125
1126 /* All uCode command responses, including Tx command responses,
1127 * Rx "responses" (frame-received notification), and other
1128 * notifications from uCode come through here*/
1129 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1130 iwl_rx_handle(priv);
1131 priv->isr_stats.rx++;
1132 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1133 }
1134
1135 /* This "Tx" DMA channel is used only for loading uCode */
1136 if (inta & CSR_INT_BIT_FH_TX) {
1137 IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
1138 priv->isr_stats.tx++;
1139 handled |= CSR_INT_BIT_FH_TX;
1140 /* Wake up uCode load routine, now that load is complete */
1141 priv->ucode_write_complete = 1;
1142 wake_up_interruptible(&priv->wait_command_queue);
1143 }
1144
1145 if (inta & ~handled) {
1146 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1147 priv->isr_stats.unhandled++;
1148 }
1149
1150 if (inta & ~(priv->inta_mask)) {
1151 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1152 inta & ~priv->inta_mask);
1153 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
1154 }
1155
1156 /* Re-enable all interrupts */
1157 /* only Re-enable if diabled by irq */
1158 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1159 iwl_enable_interrupts(priv);
1160
1161 #ifdef CONFIG_IWLWIFI_DEBUG
1162 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1163 inta = iwl_read32(priv, CSR_INT);
1164 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1165 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1166 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1167 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1168 }
1169 #endif
1170 }
1171
1172 /* tasklet for iwlagn interrupt */
1173 static void iwl_irq_tasklet(struct iwl_priv *priv)
1174 {
1175 u32 inta = 0;
1176 u32 handled = 0;
1177 unsigned long flags;
1178 u32 i;
1179 #ifdef CONFIG_IWLWIFI_DEBUG
1180 u32 inta_mask;
1181 #endif
1182
1183 spin_lock_irqsave(&priv->lock, flags);
1184
1185 /* Ack/clear/reset pending uCode interrupts.
1186 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1187 */
1188 /* There is a hardware bug in the interrupt mask function that some
1189 * interrupts (i.e. CSR_INT_BIT_SCD) can still be generated even if
1190 * they are disabled in the CSR_INT_MASK register. Furthermore the
1191 * ICT interrupt handling mechanism has another bug that might cause
1192 * these unmasked interrupts fail to be detected. We workaround the
1193 * hardware bugs here by ACKing all the possible interrupts so that
1194 * interrupt coalescing can still be achieved.
1195 */
1196 iwl_write32(priv, CSR_INT, priv->_agn.inta | ~priv->inta_mask);
1197
1198 inta = priv->_agn.inta;
1199
1200 #ifdef CONFIG_IWLWIFI_DEBUG
1201 if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1202 /* just for debug */
1203 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1204 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x\n ",
1205 inta, inta_mask);
1206 }
1207 #endif
1208
1209 spin_unlock_irqrestore(&priv->lock, flags);
1210
1211 /* saved interrupt in inta variable now we can reset priv->_agn.inta */
1212 priv->_agn.inta = 0;
1213
1214 /* Now service all interrupt bits discovered above. */
1215 if (inta & CSR_INT_BIT_HW_ERR) {
1216 IWL_ERR(priv, "Hardware error detected. Restarting.\n");
1217
1218 /* Tell the device to stop sending interrupts */
1219 iwl_disable_interrupts(priv);
1220
1221 priv->isr_stats.hw++;
1222 iwl_irq_handle_error(priv);
1223
1224 handled |= CSR_INT_BIT_HW_ERR;
1225
1226 return;
1227 }
1228
1229 #ifdef CONFIG_IWLWIFI_DEBUG
1230 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1231 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1232 if (inta & CSR_INT_BIT_SCD) {
1233 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1234 "the frame/frames.\n");
1235 priv->isr_stats.sch++;
1236 }
1237
1238 /* Alive notification via Rx interrupt will do the real work */
1239 if (inta & CSR_INT_BIT_ALIVE) {
1240 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1241 priv->isr_stats.alive++;
1242 }
1243 }
1244 #endif
1245 /* Safely ignore these bits for debug checks below */
1246 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1247
1248 /* HW RF KILL switch toggled */
1249 if (inta & CSR_INT_BIT_RF_KILL) {
1250 int hw_rf_kill = 0;
1251 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1252 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1253 hw_rf_kill = 1;
1254
1255 IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
1256 hw_rf_kill ? "disable radio" : "enable radio");
1257
1258 priv->isr_stats.rfkill++;
1259
1260 /* driver only loads ucode once setting the interface up.
1261 * the driver allows loading the ucode even if the radio
1262 * is killed. Hence update the killswitch state here. The
1263 * rfkill handler will care about restarting if needed.
1264 */
1265 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1266 if (hw_rf_kill)
1267 set_bit(STATUS_RF_KILL_HW, &priv->status);
1268 else
1269 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1270 wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
1271 }
1272
1273 handled |= CSR_INT_BIT_RF_KILL;
1274 }
1275
1276 /* Chip got too hot and stopped itself */
1277 if (inta & CSR_INT_BIT_CT_KILL) {
1278 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1279 priv->isr_stats.ctkill++;
1280 handled |= CSR_INT_BIT_CT_KILL;
1281 }
1282
1283 /* Error detected by uCode */
1284 if (inta & CSR_INT_BIT_SW_ERR) {
1285 IWL_ERR(priv, "Microcode SW error detected. "
1286 " Restarting 0x%X.\n", inta);
1287 priv->isr_stats.sw++;
1288 iwl_irq_handle_error(priv);
1289 handled |= CSR_INT_BIT_SW_ERR;
1290 }
1291
1292 /* uCode wakes up after power-down sleep */
1293 if (inta & CSR_INT_BIT_WAKEUP) {
1294 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1295 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1296 for (i = 0; i < priv->hw_params.max_txq_num; i++)
1297 iwl_txq_update_write_ptr(priv, &priv->txq[i]);
1298
1299 priv->isr_stats.wakeup++;
1300
1301 handled |= CSR_INT_BIT_WAKEUP;
1302 }
1303
1304 /* All uCode command responses, including Tx command responses,
1305 * Rx "responses" (frame-received notification), and other
1306 * notifications from uCode come through here*/
1307 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX |
1308 CSR_INT_BIT_RX_PERIODIC)) {
1309 IWL_DEBUG_ISR(priv, "Rx interrupt\n");
1310 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1311 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1312 iwl_write32(priv, CSR_FH_INT_STATUS,
1313 CSR49_FH_INT_RX_MASK);
1314 }
1315 if (inta & CSR_INT_BIT_RX_PERIODIC) {
1316 handled |= CSR_INT_BIT_RX_PERIODIC;
1317 iwl_write32(priv, CSR_INT, CSR_INT_BIT_RX_PERIODIC);
1318 }
1319 /* Sending RX interrupt require many steps to be done in the
1320 * the device:
1321 * 1- write interrupt to current index in ICT table.
1322 * 2- dma RX frame.
1323 * 3- update RX shared data to indicate last write index.
1324 * 4- send interrupt.
1325 * This could lead to RX race, driver could receive RX interrupt
1326 * but the shared data changes does not reflect this;
1327 * periodic interrupt will detect any dangling Rx activity.
1328 */
1329
1330 /* Disable periodic interrupt; we use it as just a one-shot. */
1331 iwl_write8(priv, CSR_INT_PERIODIC_REG,
1332 CSR_INT_PERIODIC_DIS);
1333 iwl_rx_handle(priv);
1334
1335 /*
1336 * Enable periodic interrupt in 8 msec only if we received
1337 * real RX interrupt (instead of just periodic int), to catch
1338 * any dangling Rx interrupt. If it was just the periodic
1339 * interrupt, there was no dangling Rx activity, and no need
1340 * to extend the periodic interrupt; one-shot is enough.
1341 */
1342 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX))
1343 iwl_write8(priv, CSR_INT_PERIODIC_REG,
1344 CSR_INT_PERIODIC_ENA);
1345
1346 priv->isr_stats.rx++;
1347 }
1348
1349 /* This "Tx" DMA channel is used only for loading uCode */
1350 if (inta & CSR_INT_BIT_FH_TX) {
1351 iwl_write32(priv, CSR_FH_INT_STATUS, CSR49_FH_INT_TX_MASK);
1352 IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
1353 priv->isr_stats.tx++;
1354 handled |= CSR_INT_BIT_FH_TX;
1355 /* Wake up uCode load routine, now that load is complete */
1356 priv->ucode_write_complete = 1;
1357 wake_up_interruptible(&priv->wait_command_queue);
1358 }
1359
1360 if (inta & ~handled) {
1361 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1362 priv->isr_stats.unhandled++;
1363 }
1364
1365 if (inta & ~(priv->inta_mask)) {
1366 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1367 inta & ~priv->inta_mask);
1368 }
1369
1370 /* Re-enable all interrupts */
1371 /* only Re-enable if diabled by irq */
1372 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1373 iwl_enable_interrupts(priv);
1374 }
1375
1376 /* the threshold ratio of actual_ack_cnt to expected_ack_cnt in percent */
1377 #define ACK_CNT_RATIO (50)
1378 #define BA_TIMEOUT_CNT (5)
1379 #define BA_TIMEOUT_MAX (16)
1380
1381 /**
1382 * iwl_good_ack_health - checks for ACK count ratios, BA timeout retries.
1383 *
1384 * When the ACK count ratio is 0 and aggregated BA timeout retries exceeding
1385 * the BA_TIMEOUT_MAX, reload firmware and bring system back to normal
1386 * operation state.
1387 */
1388 bool iwl_good_ack_health(struct iwl_priv *priv,
1389 struct iwl_rx_packet *pkt)
1390 {
1391 bool rc = true;
1392 int actual_ack_cnt_delta, expected_ack_cnt_delta;
1393 int ba_timeout_delta;
1394
1395 actual_ack_cnt_delta =
1396 le32_to_cpu(pkt->u.stats.tx.actual_ack_cnt) -
1397 le32_to_cpu(priv->_agn.statistics.tx.actual_ack_cnt);
1398 expected_ack_cnt_delta =
1399 le32_to_cpu(pkt->u.stats.tx.expected_ack_cnt) -
1400 le32_to_cpu(priv->_agn.statistics.tx.expected_ack_cnt);
1401 ba_timeout_delta =
1402 le32_to_cpu(pkt->u.stats.tx.agg.ba_timeout) -
1403 le32_to_cpu(priv->_agn.statistics.tx.agg.ba_timeout);
1404 if ((priv->_agn.agg_tids_count > 0) &&
1405 (expected_ack_cnt_delta > 0) &&
1406 (((actual_ack_cnt_delta * 100) / expected_ack_cnt_delta)
1407 < ACK_CNT_RATIO) &&
1408 (ba_timeout_delta > BA_TIMEOUT_CNT)) {
1409 IWL_DEBUG_RADIO(priv, "actual_ack_cnt delta = %d,"
1410 " expected_ack_cnt = %d\n",
1411 actual_ack_cnt_delta, expected_ack_cnt_delta);
1412
1413 #ifdef CONFIG_IWLWIFI_DEBUGFS
1414 /*
1415 * This is ifdef'ed on DEBUGFS because otherwise the
1416 * statistics aren't available. If DEBUGFS is set but
1417 * DEBUG is not, these will just compile out.
1418 */
1419 IWL_DEBUG_RADIO(priv, "rx_detected_cnt delta = %d\n",
1420 priv->_agn.delta_statistics.tx.rx_detected_cnt);
1421 IWL_DEBUG_RADIO(priv,
1422 "ack_or_ba_timeout_collision delta = %d\n",
1423 priv->_agn.delta_statistics.tx.
1424 ack_or_ba_timeout_collision);
1425 #endif
1426 IWL_DEBUG_RADIO(priv, "agg ba_timeout delta = %d\n",
1427 ba_timeout_delta);
1428 if (!actual_ack_cnt_delta &&
1429 (ba_timeout_delta >= BA_TIMEOUT_MAX))
1430 rc = false;
1431 }
1432 return rc;
1433 }
1434
1435
1436 /*****************************************************************************
1437 *
1438 * sysfs attributes
1439 *
1440 *****************************************************************************/
1441
1442 #ifdef CONFIG_IWLWIFI_DEBUG
1443
1444 /*
1445 * The following adds a new attribute to the sysfs representation
1446 * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
1447 * used for controlling the debug level.
1448 *
1449 * See the level definitions in iwl for details.
1450 *
1451 * The debug_level being managed using sysfs below is a per device debug
1452 * level that is used instead of the global debug level if it (the per
1453 * device debug level) is set.
1454 */
1455 static ssize_t show_debug_level(struct device *d,
1456 struct device_attribute *attr, char *buf)
1457 {
1458 struct iwl_priv *priv = dev_get_drvdata(d);
1459 return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
1460 }
1461 static ssize_t store_debug_level(struct device *d,
1462 struct device_attribute *attr,
1463 const char *buf, size_t count)
1464 {
1465 struct iwl_priv *priv = dev_get_drvdata(d);
1466 unsigned long val;
1467 int ret;
1468
1469 ret = strict_strtoul(buf, 0, &val);
1470 if (ret)
1471 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
1472 else {
1473 priv->debug_level = val;
1474 if (iwl_alloc_traffic_mem(priv))
1475 IWL_ERR(priv,
1476 "Not enough memory to generate traffic log\n");
1477 }
1478 return strnlen(buf, count);
1479 }
1480
1481 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
1482 show_debug_level, store_debug_level);
1483
1484
1485 #endif /* CONFIG_IWLWIFI_DEBUG */
1486
1487
1488 static ssize_t show_temperature(struct device *d,
1489 struct device_attribute *attr, char *buf)
1490 {
1491 struct iwl_priv *priv = dev_get_drvdata(d);
1492
1493 if (!iwl_is_alive(priv))
1494 return -EAGAIN;
1495
1496 return sprintf(buf, "%d\n", priv->temperature);
1497 }
1498
1499 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
1500
1501 static ssize_t show_tx_power(struct device *d,
1502 struct device_attribute *attr, char *buf)
1503 {
1504 struct iwl_priv *priv = dev_get_drvdata(d);
1505
1506 if (!iwl_is_ready_rf(priv))
1507 return sprintf(buf, "off\n");
1508 else
1509 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
1510 }
1511
1512 static ssize_t store_tx_power(struct device *d,
1513 struct device_attribute *attr,
1514 const char *buf, size_t count)
1515 {
1516 struct iwl_priv *priv = dev_get_drvdata(d);
1517 unsigned long val;
1518 int ret;
1519
1520 ret = strict_strtoul(buf, 10, &val);
1521 if (ret)
1522 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
1523 else {
1524 ret = iwl_set_tx_power(priv, val, false);
1525 if (ret)
1526 IWL_ERR(priv, "failed setting tx power (0x%d).\n",
1527 ret);
1528 else
1529 ret = count;
1530 }
1531 return ret;
1532 }
1533
1534 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
1535
1536 static struct attribute *iwl_sysfs_entries[] = {
1537 &dev_attr_temperature.attr,
1538 &dev_attr_tx_power.attr,
1539 #ifdef CONFIG_IWLWIFI_DEBUG
1540 &dev_attr_debug_level.attr,
1541 #endif
1542 NULL
1543 };
1544
1545 static struct attribute_group iwl_attribute_group = {
1546 .name = NULL, /* put in device directory */
1547 .attrs = iwl_sysfs_entries,
1548 };
1549
1550 /******************************************************************************
1551 *
1552 * uCode download functions
1553 *
1554 ******************************************************************************/
1555
1556 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1557 {
1558 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1559 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1560 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1561 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1562 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1563 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1564 }
1565
1566 static void iwl_nic_start(struct iwl_priv *priv)
1567 {
1568 /* Remove all resets to allow NIC to operate */
1569 iwl_write32(priv, CSR_RESET, 0);
1570 }
1571
1572 struct iwlagn_ucode_capabilities {
1573 u32 max_probe_length;
1574 u32 standard_phy_calibration_size;
1575 bool pan;
1576 };
1577
1578 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
1579 static int iwl_mac_setup_register(struct iwl_priv *priv,
1580 struct iwlagn_ucode_capabilities *capa);
1581
1582 #define UCODE_EXPERIMENTAL_INDEX 100
1583 #define UCODE_EXPERIMENTAL_TAG "exp"
1584
1585 static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
1586 {
1587 const char *name_pre = priv->cfg->fw_name_pre;
1588 char tag[8];
1589
1590 if (first) {
1591 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
1592 priv->fw_index = UCODE_EXPERIMENTAL_INDEX;
1593 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
1594 } else if (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
1595 #endif
1596 priv->fw_index = priv->cfg->ucode_api_max;
1597 sprintf(tag, "%d", priv->fw_index);
1598 } else {
1599 priv->fw_index--;
1600 sprintf(tag, "%d", priv->fw_index);
1601 }
1602
1603 if (priv->fw_index < priv->cfg->ucode_api_min) {
1604 IWL_ERR(priv, "no suitable firmware found!\n");
1605 return -ENOENT;
1606 }
1607
1608 sprintf(priv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
1609
1610 IWL_DEBUG_INFO(priv, "attempting to load firmware %s'%s'\n",
1611 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
1612 ? "EXPERIMENTAL " : "",
1613 priv->firmware_name);
1614
1615 return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
1616 &priv->pci_dev->dev, GFP_KERNEL, priv,
1617 iwl_ucode_callback);
1618 }
1619
1620 struct iwlagn_firmware_pieces {
1621 const void *inst, *data, *init, *init_data, *boot;
1622 size_t inst_size, data_size, init_size, init_data_size, boot_size;
1623
1624 u32 build;
1625
1626 u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
1627 u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
1628 };
1629
1630 static int iwlagn_load_legacy_firmware(struct iwl_priv *priv,
1631 const struct firmware *ucode_raw,
1632 struct iwlagn_firmware_pieces *pieces)
1633 {
1634 struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
1635 u32 api_ver, hdr_size;
1636 const u8 *src;
1637
1638 priv->ucode_ver = le32_to_cpu(ucode->ver);
1639 api_ver = IWL_UCODE_API(priv->ucode_ver);
1640
1641 switch (api_ver) {
1642 default:
1643 /*
1644 * 4965 doesn't revision the firmware file format
1645 * along with the API version, it always uses v1
1646 * file format.
1647 */
1648 if ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) !=
1649 CSR_HW_REV_TYPE_4965) {
1650 hdr_size = 28;
1651 if (ucode_raw->size < hdr_size) {
1652 IWL_ERR(priv, "File size too small!\n");
1653 return -EINVAL;
1654 }
1655 pieces->build = le32_to_cpu(ucode->u.v2.build);
1656 pieces->inst_size = le32_to_cpu(ucode->u.v2.inst_size);
1657 pieces->data_size = le32_to_cpu(ucode->u.v2.data_size);
1658 pieces->init_size = le32_to_cpu(ucode->u.v2.init_size);
1659 pieces->init_data_size = le32_to_cpu(ucode->u.v2.init_data_size);
1660 pieces->boot_size = le32_to_cpu(ucode->u.v2.boot_size);
1661 src = ucode->u.v2.data;
1662 break;
1663 }
1664 /* fall through for 4965 */
1665 case 0:
1666 case 1:
1667 case 2:
1668 hdr_size = 24;
1669 if (ucode_raw->size < hdr_size) {
1670 IWL_ERR(priv, "File size too small!\n");
1671 return -EINVAL;
1672 }
1673 pieces->build = 0;
1674 pieces->inst_size = le32_to_cpu(ucode->u.v1.inst_size);
1675 pieces->data_size = le32_to_cpu(ucode->u.v1.data_size);
1676 pieces->init_size = le32_to_cpu(ucode->u.v1.init_size);
1677 pieces->init_data_size = le32_to_cpu(ucode->u.v1.init_data_size);
1678 pieces->boot_size = le32_to_cpu(ucode->u.v1.boot_size);
1679 src = ucode->u.v1.data;
1680 break;
1681 }
1682
1683 /* Verify size of file vs. image size info in file's header */
1684 if (ucode_raw->size != hdr_size + pieces->inst_size +
1685 pieces->data_size + pieces->init_size +
1686 pieces->init_data_size + pieces->boot_size) {
1687
1688 IWL_ERR(priv,
1689 "uCode file size %d does not match expected size\n",
1690 (int)ucode_raw->size);
1691 return -EINVAL;
1692 }
1693
1694 pieces->inst = src;
1695 src += pieces->inst_size;
1696 pieces->data = src;
1697 src += pieces->data_size;
1698 pieces->init = src;
1699 src += pieces->init_size;
1700 pieces->init_data = src;
1701 src += pieces->init_data_size;
1702 pieces->boot = src;
1703 src += pieces->boot_size;
1704
1705 return 0;
1706 }
1707
1708 static int iwlagn_wanted_ucode_alternative = 1;
1709
1710 static int iwlagn_load_firmware(struct iwl_priv *priv,
1711 const struct firmware *ucode_raw,
1712 struct iwlagn_firmware_pieces *pieces,
1713 struct iwlagn_ucode_capabilities *capa)
1714 {
1715 struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
1716 struct iwl_ucode_tlv *tlv;
1717 size_t len = ucode_raw->size;
1718 const u8 *data;
1719 int wanted_alternative = iwlagn_wanted_ucode_alternative, tmp;
1720 u64 alternatives;
1721 u32 tlv_len;
1722 enum iwl_ucode_tlv_type tlv_type;
1723 const u8 *tlv_data;
1724
1725 if (len < sizeof(*ucode)) {
1726 IWL_ERR(priv, "uCode has invalid length: %zd\n", len);
1727 return -EINVAL;
1728 }
1729
1730 if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
1731 IWL_ERR(priv, "invalid uCode magic: 0X%x\n",
1732 le32_to_cpu(ucode->magic));
1733 return -EINVAL;
1734 }
1735
1736 /*
1737 * Check which alternatives are present, and "downgrade"
1738 * when the chosen alternative is not present, warning
1739 * the user when that happens. Some files may not have
1740 * any alternatives, so don't warn in that case.
1741 */
1742 alternatives = le64_to_cpu(ucode->alternatives);
1743 tmp = wanted_alternative;
1744 if (wanted_alternative > 63)
1745 wanted_alternative = 63;
1746 while (wanted_alternative && !(alternatives & BIT(wanted_alternative)))
1747 wanted_alternative--;
1748 if (wanted_alternative && wanted_alternative != tmp)
1749 IWL_WARN(priv,
1750 "uCode alternative %d not available, choosing %d\n",
1751 tmp, wanted_alternative);
1752
1753 priv->ucode_ver = le32_to_cpu(ucode->ver);
1754 pieces->build = le32_to_cpu(ucode->build);
1755 data = ucode->data;
1756
1757 len -= sizeof(*ucode);
1758
1759 while (len >= sizeof(*tlv)) {
1760 u16 tlv_alt;
1761
1762 len -= sizeof(*tlv);
1763 tlv = (void *)data;
1764
1765 tlv_len = le32_to_cpu(tlv->length);
1766 tlv_type = le16_to_cpu(tlv->type);
1767 tlv_alt = le16_to_cpu(tlv->alternative);
1768 tlv_data = tlv->data;
1769
1770 if (len < tlv_len) {
1771 IWL_ERR(priv, "invalid TLV len: %zd/%u\n",
1772 len, tlv_len);
1773 return -EINVAL;
1774 }
1775 len -= ALIGN(tlv_len, 4);
1776 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
1777
1778 /*
1779 * Alternative 0 is always valid.
1780 *
1781 * Skip alternative TLVs that are not selected.
1782 */
1783 if (tlv_alt != 0 && tlv_alt != wanted_alternative)
1784 continue;
1785
1786 switch (tlv_type) {
1787 case IWL_UCODE_TLV_INST:
1788 pieces->inst = tlv_data;
1789 pieces->inst_size = tlv_len;
1790 break;
1791 case IWL_UCODE_TLV_DATA:
1792 pieces->data = tlv_data;
1793 pieces->data_size = tlv_len;
1794 break;
1795 case IWL_UCODE_TLV_INIT:
1796 pieces->init = tlv_data;
1797 pieces->init_size = tlv_len;
1798 break;
1799 case IWL_UCODE_TLV_INIT_DATA:
1800 pieces->init_data = tlv_data;
1801 pieces->init_data_size = tlv_len;
1802 break;
1803 case IWL_UCODE_TLV_BOOT:
1804 pieces->boot = tlv_data;
1805 pieces->boot_size = tlv_len;
1806 break;
1807 case IWL_UCODE_TLV_PROBE_MAX_LEN:
1808 if (tlv_len != sizeof(u32))
1809 goto invalid_tlv_len;
1810 capa->max_probe_length =
1811 le32_to_cpup((__le32 *)tlv_data);
1812 break;
1813 case IWL_UCODE_TLV_PAN:
1814 if (tlv_len)
1815 goto invalid_tlv_len;
1816 capa->pan = true;
1817 break;
1818 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
1819 if (tlv_len != sizeof(u32))
1820 goto invalid_tlv_len;
1821 pieces->init_evtlog_ptr =
1822 le32_to_cpup((__le32 *)tlv_data);
1823 break;
1824 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
1825 if (tlv_len != sizeof(u32))
1826 goto invalid_tlv_len;
1827 pieces->init_evtlog_size =
1828 le32_to_cpup((__le32 *)tlv_data);
1829 break;
1830 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
1831 if (tlv_len != sizeof(u32))
1832 goto invalid_tlv_len;
1833 pieces->init_errlog_ptr =
1834 le32_to_cpup((__le32 *)tlv_data);
1835 break;
1836 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
1837 if (tlv_len != sizeof(u32))
1838 goto invalid_tlv_len;
1839 pieces->inst_evtlog_ptr =
1840 le32_to_cpup((__le32 *)tlv_data);
1841 break;
1842 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
1843 if (tlv_len != sizeof(u32))
1844 goto invalid_tlv_len;
1845 pieces->inst_evtlog_size =
1846 le32_to_cpup((__le32 *)tlv_data);
1847 break;
1848 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
1849 if (tlv_len != sizeof(u32))
1850 goto invalid_tlv_len;
1851 pieces->inst_errlog_ptr =
1852 le32_to_cpup((__le32 *)tlv_data);
1853 break;
1854 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
1855 if (tlv_len)
1856 goto invalid_tlv_len;
1857 priv->enhance_sensitivity_table = true;
1858 break;
1859 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
1860 if (tlv_len != sizeof(u32))
1861 goto invalid_tlv_len;
1862 capa->standard_phy_calibration_size =
1863 le32_to_cpup((__le32 *)tlv_data);
1864 break;
1865 default:
1866 IWL_WARN(priv, "unknown TLV: %d\n", tlv_type);
1867 break;
1868 }
1869 }
1870
1871 if (len) {
1872 IWL_ERR(priv, "invalid TLV after parsing: %zd\n", len);
1873 iwl_print_hex_dump(priv, IWL_DL_FW, (u8 *)data, len);
1874 return -EINVAL;
1875 }
1876
1877 return 0;
1878
1879 invalid_tlv_len:
1880 IWL_ERR(priv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
1881 iwl_print_hex_dump(priv, IWL_DL_FW, tlv_data, tlv_len);
1882
1883 return -EINVAL;
1884 }
1885
1886 /**
1887 * iwl_ucode_callback - callback when firmware was loaded
1888 *
1889 * If loaded successfully, copies the firmware into buffers
1890 * for the card to fetch (via DMA).
1891 */
1892 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
1893 {
1894 struct iwl_priv *priv = context;
1895 struct iwl_ucode_header *ucode;
1896 int err;
1897 struct iwlagn_firmware_pieces pieces;
1898 const unsigned int api_max = priv->cfg->ucode_api_max;
1899 const unsigned int api_min = priv->cfg->ucode_api_min;
1900 u32 api_ver;
1901 char buildstr[25];
1902 u32 build;
1903 struct iwlagn_ucode_capabilities ucode_capa = {
1904 .max_probe_length = 200,
1905 .standard_phy_calibration_size =
1906 IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE,
1907 };
1908
1909 memset(&pieces, 0, sizeof(pieces));
1910
1911 if (!ucode_raw) {
1912 if (priv->fw_index <= priv->cfg->ucode_api_max)
1913 IWL_ERR(priv,
1914 "request for firmware file '%s' failed.\n",
1915 priv->firmware_name);
1916 goto try_again;
1917 }
1918
1919 IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
1920 priv->firmware_name, ucode_raw->size);
1921
1922 /* Make sure that we got at least the API version number */
1923 if (ucode_raw->size < 4) {
1924 IWL_ERR(priv, "File size way too small!\n");
1925 goto try_again;
1926 }
1927
1928 /* Data from ucode file: header followed by uCode images */
1929 ucode = (struct iwl_ucode_header *)ucode_raw->data;
1930
1931 if (ucode->ver)
1932 err = iwlagn_load_legacy_firmware(priv, ucode_raw, &pieces);
1933 else
1934 err = iwlagn_load_firmware(priv, ucode_raw, &pieces,
1935 &ucode_capa);
1936
1937 if (err)
1938 goto try_again;
1939
1940 api_ver = IWL_UCODE_API(priv->ucode_ver);
1941 build = pieces.build;
1942
1943 /*
1944 * api_ver should match the api version forming part of the
1945 * firmware filename ... but we don't check for that and only rely
1946 * on the API version read from firmware header from here on forward
1947 */
1948 /* no api version check required for experimental uCode */
1949 if (priv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
1950 if (api_ver < api_min || api_ver > api_max) {
1951 IWL_ERR(priv,
1952 "Driver unable to support your firmware API. "
1953 "Driver supports v%u, firmware is v%u.\n",
1954 api_max, api_ver);
1955 goto try_again;
1956 }
1957
1958 if (api_ver != api_max)
1959 IWL_ERR(priv,
1960 "Firmware has old API version. Expected v%u, "
1961 "got v%u. New firmware can be obtained "
1962 "from http://www.intellinuxwireless.org.\n",
1963 api_max, api_ver);
1964 }
1965
1966 if (build)
1967 sprintf(buildstr, " build %u%s", build,
1968 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
1969 ? " (EXP)" : "");
1970 else
1971 buildstr[0] = '\0';
1972
1973 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u%s\n",
1974 IWL_UCODE_MAJOR(priv->ucode_ver),
1975 IWL_UCODE_MINOR(priv->ucode_ver),
1976 IWL_UCODE_API(priv->ucode_ver),
1977 IWL_UCODE_SERIAL(priv->ucode_ver),
1978 buildstr);
1979
1980 snprintf(priv->hw->wiphy->fw_version,
1981 sizeof(priv->hw->wiphy->fw_version),
1982 "%u.%u.%u.%u%s",
1983 IWL_UCODE_MAJOR(priv->ucode_ver),
1984 IWL_UCODE_MINOR(priv->ucode_ver),
1985 IWL_UCODE_API(priv->ucode_ver),
1986 IWL_UCODE_SERIAL(priv->ucode_ver),
1987 buildstr);
1988
1989 /*
1990 * For any of the failures below (before allocating pci memory)
1991 * we will try to load a version with a smaller API -- maybe the
1992 * user just got a corrupted version of the latest API.
1993 */
1994
1995 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1996 priv->ucode_ver);
1997 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %Zd\n",
1998 pieces.inst_size);
1999 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %Zd\n",
2000 pieces.data_size);
2001 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %Zd\n",
2002 pieces.init_size);
2003 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %Zd\n",
2004 pieces.init_data_size);
2005 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %Zd\n",
2006 pieces.boot_size);
2007
2008 /* Verify that uCode images will fit in card's SRAM */
2009 if (pieces.inst_size > priv->hw_params.max_inst_size) {
2010 IWL_ERR(priv, "uCode instr len %Zd too large to fit in\n",
2011 pieces.inst_size);
2012 goto try_again;
2013 }
2014
2015 if (pieces.data_size > priv->hw_params.max_data_size) {
2016 IWL_ERR(priv, "uCode data len %Zd too large to fit in\n",
2017 pieces.data_size);
2018 goto try_again;
2019 }
2020
2021 if (pieces.init_size > priv->hw_params.max_inst_size) {
2022 IWL_ERR(priv, "uCode init instr len %Zd too large to fit in\n",
2023 pieces.init_size);
2024 goto try_again;
2025 }
2026
2027 if (pieces.init_data_size > priv->hw_params.max_data_size) {
2028 IWL_ERR(priv, "uCode init data len %Zd too large to fit in\n",
2029 pieces.init_data_size);
2030 goto try_again;
2031 }
2032
2033 if (pieces.boot_size > priv->hw_params.max_bsm_size) {
2034 IWL_ERR(priv, "uCode boot instr len %Zd too large to fit in\n",
2035 pieces.boot_size);
2036 goto try_again;
2037 }
2038
2039 /* Allocate ucode buffers for card's bus-master loading ... */
2040
2041 /* Runtime instructions and 2 copies of data:
2042 * 1) unmodified from disk
2043 * 2) backup cache for save/restore during power-downs */
2044 priv->ucode_code.len = pieces.inst_size;
2045 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2046
2047 priv->ucode_data.len = pieces.data_size;
2048 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2049
2050 priv->ucode_data_backup.len = pieces.data_size;
2051 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2052
2053 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2054 !priv->ucode_data_backup.v_addr)
2055 goto err_pci_alloc;
2056
2057 /* Initialization instructions and data */
2058 if (pieces.init_size && pieces.init_data_size) {
2059 priv->ucode_init.len = pieces.init_size;
2060 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2061
2062 priv->ucode_init_data.len = pieces.init_data_size;
2063 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2064
2065 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2066 goto err_pci_alloc;
2067 }
2068
2069 /* Bootstrap (instructions only, no data) */
2070 if (pieces.boot_size) {
2071 priv->ucode_boot.len = pieces.boot_size;
2072 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2073
2074 if (!priv->ucode_boot.v_addr)
2075 goto err_pci_alloc;
2076 }
2077
2078 /* Now that we can no longer fail, copy information */
2079
2080 /*
2081 * The (size - 16) / 12 formula is based on the information recorded
2082 * for each event, which is of mode 1 (including timestamp) for all
2083 * new microcodes that include this information.
2084 */
2085 priv->_agn.init_evtlog_ptr = pieces.init_evtlog_ptr;
2086 if (pieces.init_evtlog_size)
2087 priv->_agn.init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
2088 else
2089 priv->_agn.init_evtlog_size =
2090 priv->cfg->base_params->max_event_log_size;
2091 priv->_agn.init_errlog_ptr = pieces.init_errlog_ptr;
2092 priv->_agn.inst_evtlog_ptr = pieces.inst_evtlog_ptr;
2093 if (pieces.inst_evtlog_size)
2094 priv->_agn.inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
2095 else
2096 priv->_agn.inst_evtlog_size =
2097 priv->cfg->base_params->max_event_log_size;
2098 priv->_agn.inst_errlog_ptr = pieces.inst_errlog_ptr;
2099
2100 if (ucode_capa.pan) {
2101 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
2102 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
2103 } else
2104 priv->sta_key_max_num = STA_KEY_MAX_NUM;
2105
2106 /* Copy images into buffers for card's bus-master reads ... */
2107
2108 /* Runtime instructions (first block of data in file) */
2109 IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode instr len %Zd\n",
2110 pieces.inst_size);
2111 memcpy(priv->ucode_code.v_addr, pieces.inst, pieces.inst_size);
2112
2113 IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2114 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2115
2116 /*
2117 * Runtime data
2118 * NOTE: Copy into backup buffer will be done in iwl_up()
2119 */
2120 IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode data len %Zd\n",
2121 pieces.data_size);
2122 memcpy(priv->ucode_data.v_addr, pieces.data, pieces.data_size);
2123 memcpy(priv->ucode_data_backup.v_addr, pieces.data, pieces.data_size);
2124
2125 /* Initialization instructions */
2126 if (pieces.init_size) {
2127 IWL_DEBUG_INFO(priv, "Copying (but not loading) init instr len %Zd\n",
2128 pieces.init_size);
2129 memcpy(priv->ucode_init.v_addr, pieces.init, pieces.init_size);
2130 }
2131
2132 /* Initialization data */
2133 if (pieces.init_data_size) {
2134 IWL_DEBUG_INFO(priv, "Copying (but not loading) init data len %Zd\n",
2135 pieces.init_data_size);
2136 memcpy(priv->ucode_init_data.v_addr, pieces.init_data,
2137 pieces.init_data_size);
2138 }
2139
2140 /* Bootstrap instructions */
2141 IWL_DEBUG_INFO(priv, "Copying (but not loading) boot instr len %Zd\n",
2142 pieces.boot_size);
2143 memcpy(priv->ucode_boot.v_addr, pieces.boot, pieces.boot_size);
2144
2145 /*
2146 * figure out the offset of chain noise reset and gain commands
2147 * base on the size of standard phy calibration commands table size
2148 */
2149 if (ucode_capa.standard_phy_calibration_size >
2150 IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
2151 ucode_capa.standard_phy_calibration_size =
2152 IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
2153
2154 priv->_agn.phy_calib_chain_noise_reset_cmd =
2155 ucode_capa.standard_phy_calibration_size;
2156 priv->_agn.phy_calib_chain_noise_gain_cmd =
2157 ucode_capa.standard_phy_calibration_size + 1;
2158
2159 /**************************************************
2160 * This is still part of probe() in a sense...
2161 *
2162 * 9. Setup and register with mac80211 and debugfs
2163 **************************************************/
2164 err = iwl_mac_setup_register(priv, &ucode_capa);
2165 if (err)
2166 goto out_unbind;
2167
2168 err = iwl_dbgfs_register(priv, DRV_NAME);
2169 if (err)
2170 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
2171
2172 err = sysfs_create_group(&priv->pci_dev->dev.kobj,
2173 &iwl_attribute_group);
2174 if (err) {
2175 IWL_ERR(priv, "failed to create sysfs device attributes\n");
2176 goto out_unbind;
2177 }
2178
2179 /* We have our copies now, allow OS release its copies */
2180 release_firmware(ucode_raw);
2181 complete(&priv->_agn.firmware_loading_complete);
2182 return;
2183
2184 try_again:
2185 /* try next, if any */
2186 if (iwl_request_firmware(priv, false))
2187 goto out_unbind;
2188 release_firmware(ucode_raw);
2189 return;
2190
2191 err_pci_alloc:
2192 IWL_ERR(priv, "failed to allocate pci memory\n");
2193 iwl_dealloc_ucode_pci(priv);
2194 out_unbind:
2195 complete(&priv->_agn.firmware_loading_complete);
2196 device_release_driver(&priv->pci_dev->dev);
2197 release_firmware(ucode_raw);
2198 }
2199
2200 static const char *desc_lookup_text[] = {
2201 "OK",
2202 "FAIL",
2203 "BAD_PARAM",
2204 "BAD_CHECKSUM",
2205 "NMI_INTERRUPT_WDG",
2206 "SYSASSERT",
2207 "FATAL_ERROR",
2208 "BAD_COMMAND",
2209 "HW_ERROR_TUNE_LOCK",
2210 "HW_ERROR_TEMPERATURE",
2211 "ILLEGAL_CHAN_FREQ",
2212 "VCC_NOT_STABLE",
2213 "FH_ERROR",
2214 "NMI_INTERRUPT_HOST",
2215 "NMI_INTERRUPT_ACTION_PT",
2216 "NMI_INTERRUPT_UNKNOWN",
2217 "UCODE_VERSION_MISMATCH",
2218 "HW_ERROR_ABS_LOCK",
2219 "HW_ERROR_CAL_LOCK_FAIL",
2220 "NMI_INTERRUPT_INST_ACTION_PT",
2221 "NMI_INTERRUPT_DATA_ACTION_PT",
2222 "NMI_TRM_HW_ER",
2223 "NMI_INTERRUPT_TRM",
2224 "NMI_INTERRUPT_BREAK_POINT"
2225 "DEBUG_0",
2226 "DEBUG_1",
2227 "DEBUG_2",
2228 "DEBUG_3",
2229 };
2230
2231 static struct { char *name; u8 num; } advanced_lookup[] = {
2232 { "NMI_INTERRUPT_WDG", 0x34 },
2233 { "SYSASSERT", 0x35 },
2234 { "UCODE_VERSION_MISMATCH", 0x37 },
2235 { "BAD_COMMAND", 0x38 },
2236 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
2237 { "FATAL_ERROR", 0x3D },
2238 { "NMI_TRM_HW_ERR", 0x46 },
2239 { "NMI_INTERRUPT_TRM", 0x4C },
2240 { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
2241 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
2242 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
2243 { "NMI_INTERRUPT_HOST", 0x66 },
2244 { "NMI_INTERRUPT_ACTION_PT", 0x7C },
2245 { "NMI_INTERRUPT_UNKNOWN", 0x84 },
2246 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
2247 { "ADVANCED_SYSASSERT", 0 },
2248 };
2249
2250 static const char *desc_lookup(u32 num)
2251 {
2252 int i;
2253 int max = ARRAY_SIZE(desc_lookup_text);
2254
2255 if (num < max)
2256 return desc_lookup_text[num];
2257
2258 max = ARRAY_SIZE(advanced_lookup) - 1;
2259 for (i = 0; i < max; i++) {
2260 if (advanced_lookup[i].num == num)
2261 break;;
2262 }
2263 return advanced_lookup[i].name;
2264 }
2265
2266 #define ERROR_START_OFFSET (1 * sizeof(u32))
2267 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
2268
2269 void iwl_dump_nic_error_log(struct iwl_priv *priv)
2270 {
2271 u32 data2, line;
2272 u32 desc, time, count, base, data1;
2273 u32 blink1, blink2, ilink1, ilink2;
2274 u32 pc, hcmd;
2275
2276 if (priv->ucode_type == UCODE_INIT) {
2277 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
2278 if (!base)
2279 base = priv->_agn.init_errlog_ptr;
2280 } else {
2281 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
2282 if (!base)
2283 base = priv->_agn.inst_errlog_ptr;
2284 }
2285
2286 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
2287 IWL_ERR(priv,
2288 "Not valid error log pointer 0x%08X for %s uCode\n",
2289 base, (priv->ucode_type == UCODE_INIT) ? "Init" : "RT");
2290 return;
2291 }
2292
2293 count = iwl_read_targ_mem(priv, base);
2294
2295 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
2296 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
2297 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
2298 priv->status, count);
2299 }
2300
2301 desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
2302 priv->isr_stats.err_code = desc;
2303 pc = iwl_read_targ_mem(priv, base + 2 * sizeof(u32));
2304 blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
2305 blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
2306 ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
2307 ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
2308 data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
2309 data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
2310 line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
2311 time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
2312 hcmd = iwl_read_targ_mem(priv, base + 22 * sizeof(u32));
2313
2314 trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, data2, line,
2315 blink1, blink2, ilink1, ilink2);
2316
2317 IWL_ERR(priv, "Desc Time "
2318 "data1 data2 line\n");
2319 IWL_ERR(priv, "%-28s (0x%04X) %010u 0x%08X 0x%08X %u\n",
2320 desc_lookup(desc), desc, time, data1, data2, line);
2321 IWL_ERR(priv, "pc blink1 blink2 ilink1 ilink2 hcmd\n");
2322 IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X 0x%05X 0x%05X\n",
2323 pc, blink1, blink2, ilink1, ilink2, hcmd);
2324 }
2325
2326 #define EVENT_START_OFFSET (4 * sizeof(u32))
2327
2328 /**
2329 * iwl_print_event_log - Dump error event log to syslog
2330 *
2331 */
2332 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
2333 u32 num_events, u32 mode,
2334 int pos, char **buf, size_t bufsz)
2335 {
2336 u32 i;
2337 u32 base; /* SRAM byte address of event log header */
2338 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
2339 u32 ptr; /* SRAM byte address of log data */
2340 u32 ev, time, data; /* event log data */
2341 unsigned long reg_flags;
2342
2343 if (num_events == 0)
2344 return pos;
2345
2346 if (priv->ucode_type == UCODE_INIT) {
2347 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
2348 if (!base)
2349 base = priv->_agn.init_evtlog_ptr;
2350 } else {
2351 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2352 if (!base)
2353 base = priv->_agn.inst_evtlog_ptr;
2354 }
2355
2356 if (mode == 0)
2357 event_size = 2 * sizeof(u32);
2358 else
2359 event_size = 3 * sizeof(u32);
2360
2361 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
2362
2363 /* Make sure device is powered up for SRAM reads */
2364 spin_lock_irqsave(&priv->reg_lock, reg_flags);
2365 iwl_grab_nic_access(priv);
2366
2367 /* Set starting address; reads will auto-increment */
2368 _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
2369 rmb();
2370
2371 /* "time" is actually "data" for mode 0 (no timestamp).
2372 * place event id # at far right for easier visual parsing. */
2373 for (i = 0; i < num_events; i++) {
2374 ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2375 time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2376 if (mode == 0) {
2377 /* data, ev */
2378 if (bufsz) {
2379 pos += scnprintf(*buf + pos, bufsz - pos,
2380 "EVT_LOG:0x%08x:%04u\n",
2381 time, ev);
2382 } else {
2383 trace_iwlwifi_dev_ucode_event(priv, 0,
2384 time, ev);
2385 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
2386 time, ev);
2387 }
2388 } else {
2389 data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2390 if (bufsz) {
2391 pos += scnprintf(*buf + pos, bufsz - pos,
2392 "EVT_LOGT:%010u:0x%08x:%04u\n",
2393 time, data, ev);
2394 } else {
2395 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
2396 time, data, ev);
2397 trace_iwlwifi_dev_ucode_event(priv, time,
2398 data, ev);
2399 }
2400 }
2401 }
2402
2403 /* Allow device to power down */
2404 iwl_release_nic_access(priv);
2405 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
2406 return pos;
2407 }
2408
2409 /**
2410 * iwl_print_last_event_logs - Dump the newest # of event log to syslog
2411 */
2412 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
2413 u32 num_wraps, u32 next_entry,
2414 u32 size, u32 mode,
2415 int pos, char **buf, size_t bufsz)
2416 {
2417 /*
2418 * display the newest DEFAULT_LOG_ENTRIES entries
2419 * i.e the entries just before the next ont that uCode would fill.
2420 */
2421 if (num_wraps) {
2422 if (next_entry < size) {
2423 pos = iwl_print_event_log(priv,
2424 capacity - (size - next_entry),
2425 size - next_entry, mode,
2426 pos, buf, bufsz);
2427 pos = iwl_print_event_log(priv, 0,
2428 next_entry, mode,
2429 pos, buf, bufsz);
2430 } else
2431 pos = iwl_print_event_log(priv, next_entry - size,
2432 size, mode, pos, buf, bufsz);
2433 } else {
2434 if (next_entry < size) {
2435 pos = iwl_print_event_log(priv, 0, next_entry,
2436 mode, pos, buf, bufsz);
2437 } else {
2438 pos = iwl_print_event_log(priv, next_entry - size,
2439 size, mode, pos, buf, bufsz);
2440 }
2441 }
2442 return pos;
2443 }
2444
2445 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
2446
2447 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
2448 char **buf, bool display)
2449 {
2450 u32 base; /* SRAM byte address of event log header */
2451 u32 capacity; /* event log capacity in # entries */
2452 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
2453 u32 num_wraps; /* # times uCode wrapped to top of log */
2454 u32 next_entry; /* index of next entry to be written by uCode */
2455 u32 size; /* # entries that we'll print */
2456 u32 logsize;
2457 int pos = 0;
2458 size_t bufsz = 0;
2459
2460 if (priv->ucode_type == UCODE_INIT) {
2461 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
2462 logsize = priv->_agn.init_evtlog_size;
2463 if (!base)
2464 base = priv->_agn.init_evtlog_ptr;
2465 } else {
2466 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2467 logsize = priv->_agn.inst_evtlog_size;
2468 if (!base)
2469 base = priv->_agn.inst_evtlog_ptr;
2470 }
2471
2472 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
2473 IWL_ERR(priv,
2474 "Invalid event log pointer 0x%08X for %s uCode\n",
2475 base, (priv->ucode_type == UCODE_INIT) ? "Init" : "RT");
2476 return -EINVAL;
2477 }
2478
2479 /* event log header */
2480 capacity = iwl_read_targ_mem(priv, base);
2481 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
2482 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
2483 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
2484
2485 if (capacity > logsize) {
2486 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
2487 capacity, logsize);
2488 capacity = logsize;
2489 }
2490
2491 if (next_entry > logsize) {
2492 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
2493 next_entry, logsize);
2494 next_entry = logsize;
2495 }
2496
2497 size = num_wraps ? capacity : next_entry;
2498
2499 /* bail out if nothing in log */
2500 if (size == 0) {
2501 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
2502 return pos;
2503 }
2504
2505 /* enable/disable bt channel inhibition */
2506 priv->bt_ch_announce = iwlagn_bt_ch_announce;
2507
2508 #ifdef CONFIG_IWLWIFI_DEBUG
2509 if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log)
2510 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2511 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2512 #else
2513 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2514 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2515 #endif
2516 IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
2517 size);
2518
2519 #ifdef CONFIG_IWLWIFI_DEBUG
2520 if (display) {
2521 if (full_log)
2522 bufsz = capacity * 48;
2523 else
2524 bufsz = size * 48;
2525 *buf = kmalloc(bufsz, GFP_KERNEL);
2526 if (!*buf)
2527 return -ENOMEM;
2528 }
2529 if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
2530 /*
2531 * if uCode has wrapped back to top of log,
2532 * start at the oldest entry,
2533 * i.e the next one that uCode would fill.
2534 */
2535 if (num_wraps)
2536 pos = iwl_print_event_log(priv, next_entry,
2537 capacity - next_entry, mode,
2538 pos, buf, bufsz);
2539 /* (then/else) start at top of log */
2540 pos = iwl_print_event_log(priv, 0,
2541 next_entry, mode, pos, buf, bufsz);
2542 } else
2543 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2544 next_entry, size, mode,
2545 pos, buf, bufsz);
2546 #else
2547 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2548 next_entry, size, mode,
2549 pos, buf, bufsz);
2550 #endif
2551 return pos;
2552 }
2553
2554 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
2555 {
2556 struct iwl_ct_kill_config cmd;
2557 struct iwl_ct_kill_throttling_config adv_cmd;
2558 unsigned long flags;
2559 int ret = 0;
2560
2561 spin_lock_irqsave(&priv->lock, flags);
2562 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2563 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
2564 spin_unlock_irqrestore(&priv->lock, flags);
2565 priv->thermal_throttle.ct_kill_toggle = false;
2566
2567 if (priv->cfg->base_params->support_ct_kill_exit) {
2568 adv_cmd.critical_temperature_enter =
2569 cpu_to_le32(priv->hw_params.ct_kill_threshold);
2570 adv_cmd.critical_temperature_exit =
2571 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
2572
2573 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2574 sizeof(adv_cmd), &adv_cmd);
2575 if (ret)
2576 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2577 else
2578 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2579 "succeeded, "
2580 "critical temperature enter is %d,"
2581 "exit is %d\n",
2582 priv->hw_params.ct_kill_threshold,
2583 priv->hw_params.ct_kill_exit_threshold);
2584 } else {
2585 cmd.critical_temperature_R =
2586 cpu_to_le32(priv->hw_params.ct_kill_threshold);
2587
2588 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2589 sizeof(cmd), &cmd);
2590 if (ret)
2591 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2592 else
2593 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2594 "succeeded, "
2595 "critical temperature is %d\n",
2596 priv->hw_params.ct_kill_threshold);
2597 }
2598 }
2599
2600 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
2601 {
2602 struct iwl_calib_cfg_cmd calib_cfg_cmd;
2603 struct iwl_host_cmd cmd = {
2604 .id = CALIBRATION_CFG_CMD,
2605 .len = sizeof(struct iwl_calib_cfg_cmd),
2606 .data = &calib_cfg_cmd,
2607 };
2608
2609 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
2610 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_INIT_CFG_ALL;
2611 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
2612
2613 return iwl_send_cmd(priv, &cmd);
2614 }
2615
2616
2617 /**
2618 * iwl_alive_start - called after REPLY_ALIVE notification received
2619 * from protocol/runtime uCode (initialization uCode's
2620 * Alive gets handled by iwl_init_alive_start()).
2621 */
2622 static void iwl_alive_start(struct iwl_priv *priv)
2623 {
2624 int ret = 0;
2625 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2626
2627 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2628
2629 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2630 /* We had an error bringing up the hardware, so take it
2631 * all the way back down so we can try again */
2632 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2633 goto restart;
2634 }
2635
2636 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2637 * This is a paranoid check, because we would not have gotten the
2638 * "runtime" alive if code weren't properly loaded. */
2639 if (iwl_verify_ucode(priv)) {
2640 /* Runtime instruction load was bad;
2641 * take it all the way back down so we can try again */
2642 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2643 goto restart;
2644 }
2645
2646 ret = priv->cfg->ops->lib->alive_notify(priv);
2647 if (ret) {
2648 IWL_WARN(priv,
2649 "Could not complete ALIVE transition [ntf]: %d\n", ret);
2650 goto restart;
2651 }
2652
2653
2654 /* After the ALIVE response, we can send host commands to the uCode */
2655 set_bit(STATUS_ALIVE, &priv->status);
2656
2657 /* Enable watchdog to monitor the driver tx queues */
2658 iwl_setup_watchdog(priv);
2659
2660 if (iwl_is_rfkill(priv))
2661 return;
2662
2663 /* download priority table before any calibration request */
2664 if (priv->cfg->bt_params &&
2665 priv->cfg->bt_params->advanced_bt_coexist) {
2666 /* Configure Bluetooth device coexistence support */
2667 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
2668 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
2669 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
2670 priv->cfg->ops->hcmd->send_bt_config(priv);
2671 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
2672 iwlagn_send_prio_tbl(priv);
2673
2674 /* FIXME: w/a to force change uCode BT state machine */
2675 iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
2676 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
2677 iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
2678 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
2679 }
2680 if (priv->hw_params.calib_rt_cfg)
2681 iwlagn_send_calib_cfg_rt(priv, priv->hw_params.calib_rt_cfg);
2682
2683 ieee80211_wake_queues(priv->hw);
2684
2685 priv->active_rate = IWL_RATES_MASK;
2686
2687 /* Configure Tx antenna selection based on H/W config */
2688 if (priv->cfg->ops->hcmd->set_tx_ant)
2689 priv->cfg->ops->hcmd->set_tx_ant(priv, priv->cfg->valid_tx_ant);
2690
2691 if (iwl_is_associated_ctx(ctx)) {
2692 struct iwl_rxon_cmd *active_rxon =
2693 (struct iwl_rxon_cmd *)&ctx->active;
2694 /* apply any changes in staging */
2695 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
2696 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2697 } else {
2698 struct iwl_rxon_context *tmp;
2699 /* Initialize our rx_config data */
2700 for_each_context(priv, tmp)
2701 iwl_connection_init_rx_config(priv, tmp);
2702
2703 if (priv->cfg->ops->hcmd->set_rxon_chain)
2704 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
2705 }
2706
2707 if (priv->cfg->bt_params &&
2708 !priv->cfg->bt_params->advanced_bt_coexist) {
2709 /* Configure Bluetooth device coexistence support */
2710 priv->cfg->ops->hcmd->send_bt_config(priv);
2711 }
2712
2713 iwl_reset_run_time_calib(priv);
2714
2715 set_bit(STATUS_READY, &priv->status);
2716
2717 /* Configure the adapter for unassociated operation */
2718 iwlcore_commit_rxon(priv, ctx);
2719
2720 /* At this point, the NIC is initialized and operational */
2721 iwl_rf_kill_ct_config(priv);
2722
2723 iwl_leds_init(priv);
2724
2725 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2726 wake_up_interruptible(&priv->wait_command_queue);
2727
2728 iwl_power_update_mode(priv, true);
2729 IWL_DEBUG_INFO(priv, "Updated power mode\n");
2730
2731
2732 return;
2733
2734 restart:
2735 queue_work(priv->workqueue, &priv->restart);
2736 }
2737
2738 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2739
2740 static void __iwl_down(struct iwl_priv *priv)
2741 {
2742 unsigned long flags;
2743 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2744
2745 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2746
2747 iwl_scan_cancel_timeout(priv, 200);
2748
2749 exit_pending = test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
2750
2751 /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
2752 * to prevent rearm timer */
2753 del_timer_sync(&priv->watchdog);
2754
2755 iwl_clear_ucode_stations(priv, NULL);
2756 iwl_dealloc_bcast_stations(priv);
2757 iwl_clear_driver_stations(priv);
2758
2759 /* reset BT coex data */
2760 priv->bt_status = 0;
2761 if (priv->cfg->bt_params)
2762 priv->bt_traffic_load =
2763 priv->cfg->bt_params->bt_init_traffic_load;
2764 else
2765 priv->bt_traffic_load = 0;
2766 priv->bt_sco_active = false;
2767 priv->bt_full_concurrent = false;
2768 priv->bt_ci_compliance = 0;
2769
2770 /* Unblock any waiting calls */
2771 wake_up_interruptible_all(&priv->wait_command_queue);
2772
2773 /* Wipe out the EXIT_PENDING status bit if we are not actually
2774 * exiting the module */
2775 if (!exit_pending)
2776 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2777
2778 /* stop and reset the on-board processor */
2779 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2780
2781 /* tell the device to stop sending interrupts */
2782 spin_lock_irqsave(&priv->lock, flags);
2783 iwl_disable_interrupts(priv);
2784 spin_unlock_irqrestore(&priv->lock, flags);
2785 iwl_synchronize_irq(priv);
2786
2787 if (priv->mac80211_registered)
2788 ieee80211_stop_queues(priv->hw);
2789
2790 /* If we have not previously called iwl_init() then
2791 * clear all bits but the RF Kill bit and return */
2792 if (!iwl_is_init(priv)) {
2793 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2794 STATUS_RF_KILL_HW |
2795 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2796 STATUS_GEO_CONFIGURED |
2797 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2798 STATUS_EXIT_PENDING;
2799 goto exit;
2800 }
2801
2802 /* ...otherwise clear out all the status bits but the RF Kill
2803 * bit and continue taking the NIC down. */
2804 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2805 STATUS_RF_KILL_HW |
2806 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2807 STATUS_GEO_CONFIGURED |
2808 test_bit(STATUS_FW_ERROR, &priv->status) <<
2809 STATUS_FW_ERROR |
2810 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2811 STATUS_EXIT_PENDING;
2812
2813 /* device going down, Stop using ICT table */
2814 if (priv->cfg->ops->lib->isr_ops.disable)
2815 priv->cfg->ops->lib->isr_ops.disable(priv);
2816
2817 iwlagn_txq_ctx_stop(priv);
2818 iwlagn_rxq_stop(priv);
2819
2820 /* Power-down device's busmaster DMA clocks */
2821 iwl_write_prph(priv, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT);
2822 udelay(5);
2823
2824 /* Make sure (redundant) we've released our request to stay awake */
2825 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2826
2827 /* Stop the device, and put it in low power state */
2828 iwl_apm_stop(priv);
2829
2830 exit:
2831 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2832
2833 dev_kfree_skb(priv->beacon_skb);
2834 priv->beacon_skb = NULL;
2835
2836 /* clear out any free frames */
2837 iwl_clear_free_frames(priv);
2838 }
2839
2840 static void iwl_down(struct iwl_priv *priv)
2841 {
2842 mutex_lock(&priv->mutex);
2843 __iwl_down(priv);
2844 mutex_unlock(&priv->mutex);
2845
2846 iwl_cancel_deferred_work(priv);
2847 }
2848
2849 #define HW_READY_TIMEOUT (50)
2850
2851 static int iwl_set_hw_ready(struct iwl_priv *priv)
2852 {
2853 int ret = 0;
2854
2855 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
2856 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY);
2857
2858 /* See if we got it */
2859 ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
2860 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
2861 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
2862 HW_READY_TIMEOUT);
2863 if (ret != -ETIMEDOUT)
2864 priv->hw_ready = true;
2865 else
2866 priv->hw_ready = false;
2867
2868 IWL_DEBUG_INFO(priv, "hardware %s\n",
2869 (priv->hw_ready == 1) ? "ready" : "not ready");
2870 return ret;
2871 }
2872
2873 static int iwl_prepare_card_hw(struct iwl_priv *priv)
2874 {
2875 int ret = 0;
2876
2877 IWL_DEBUG_INFO(priv, "iwl_prepare_card_hw enter\n");
2878
2879 ret = iwl_set_hw_ready(priv);
2880 if (priv->hw_ready)
2881 return ret;
2882
2883 /* If HW is not ready, prepare the conditions to check again */
2884 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
2885 CSR_HW_IF_CONFIG_REG_PREPARE);
2886
2887 ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
2888 ~CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE,
2889 CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, 150000);
2890
2891 /* HW should be ready by now, check again. */
2892 if (ret != -ETIMEDOUT)
2893 iwl_set_hw_ready(priv);
2894
2895 return ret;
2896 }
2897
2898 #define MAX_HW_RESTARTS 5
2899
2900 static int __iwl_up(struct iwl_priv *priv)
2901 {
2902 struct iwl_rxon_context *ctx;
2903 int i;
2904 int ret;
2905
2906 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2907 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2908 return -EIO;
2909 }
2910
2911 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2912 IWL_ERR(priv, "ucode not available for device bringup\n");
2913 return -EIO;
2914 }
2915
2916 for_each_context(priv, ctx) {
2917 ret = iwlagn_alloc_bcast_station(priv, ctx);
2918 if (ret) {
2919 iwl_dealloc_bcast_stations(priv);
2920 return ret;
2921 }
2922 }
2923
2924 iwl_prepare_card_hw(priv);
2925
2926 if (!priv->hw_ready) {
2927 IWL_WARN(priv, "Exit HW not ready\n");
2928 return -EIO;
2929 }
2930
2931 /* If platform's RF_KILL switch is NOT set to KILL */
2932 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2933 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2934 else
2935 set_bit(STATUS_RF_KILL_HW, &priv->status);
2936
2937 if (iwl_is_rfkill(priv)) {
2938 wiphy_rfkill_set_hw_state(priv->hw->wiphy, true);
2939
2940 iwl_enable_interrupts(priv);
2941 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2942 return 0;
2943 }
2944
2945 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2946
2947 /* must be initialised before iwl_hw_nic_init */
2948 if (priv->valid_contexts != BIT(IWL_RXON_CTX_BSS))
2949 priv->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
2950 else
2951 priv->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
2952
2953 ret = iwlagn_hw_nic_init(priv);
2954 if (ret) {
2955 IWL_ERR(priv, "Unable to init nic\n");
2956 return ret;
2957 }
2958
2959 /* make sure rfkill handshake bits are cleared */
2960 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2961 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2962 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2963
2964 /* clear (again), then enable host interrupts */
2965 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2966 iwl_enable_interrupts(priv);
2967
2968 /* really make sure rfkill handshake bits are cleared */
2969 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2970 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2971
2972 /* Copy original ucode data image from disk into backup cache.
2973 * This will be used to initialize the on-board processor's
2974 * data SRAM for a clean start when the runtime program first loads. */
2975 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2976 priv->ucode_data.len);
2977
2978 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2979
2980 /* load bootstrap state machine,
2981 * load bootstrap program into processor's memory,
2982 * prepare to load the "initialize" uCode */
2983 ret = priv->cfg->ops->lib->load_ucode(priv);
2984
2985 if (ret) {
2986 IWL_ERR(priv, "Unable to set up bootstrap uCode: %d\n",
2987 ret);
2988 continue;
2989 }
2990
2991 /* start card; "initialize" will load runtime ucode */
2992 iwl_nic_start(priv);
2993
2994 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2995
2996 return 0;
2997 }
2998
2999 set_bit(STATUS_EXIT_PENDING, &priv->status);
3000 __iwl_down(priv);
3001 clear_bit(STATUS_EXIT_PENDING, &priv->status);
3002
3003 /* tried to restart and config the device for as long as our
3004 * patience could withstand */
3005 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
3006 return -EIO;
3007 }
3008
3009
3010 /*****************************************************************************
3011 *
3012 * Workqueue callbacks
3013 *
3014 *****************************************************************************/
3015
3016 static void iwl_bg_init_alive_start(struct work_struct *data)
3017 {
3018 struct iwl_priv *priv =
3019 container_of(data, struct iwl_priv, init_alive_start.work);
3020
3021 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3022 return;
3023
3024 mutex_lock(&priv->mutex);
3025 priv->cfg->ops->lib->init_alive_start(priv);
3026 mutex_unlock(&priv->mutex);
3027 }
3028
3029 static void iwl_bg_alive_start(struct work_struct *data)
3030 {
3031 struct iwl_priv *priv =
3032 container_of(data, struct iwl_priv, alive_start.work);
3033
3034 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3035 return;
3036
3037 /* enable dram interrupt */
3038 if (priv->cfg->ops->lib->isr_ops.reset)
3039 priv->cfg->ops->lib->isr_ops.reset(priv);
3040
3041 mutex_lock(&priv->mutex);
3042 iwl_alive_start(priv);
3043 mutex_unlock(&priv->mutex);
3044 }
3045
3046 static void iwl_bg_run_time_calib_work(struct work_struct *work)
3047 {
3048 struct iwl_priv *priv = container_of(work, struct iwl_priv,
3049 run_time_calib_work);
3050
3051 mutex_lock(&priv->mutex);
3052
3053 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
3054 test_bit(STATUS_SCANNING, &priv->status)) {
3055 mutex_unlock(&priv->mutex);
3056 return;
3057 }
3058
3059 if (priv->start_calib) {
3060 if (priv->cfg->bt_params &&
3061 priv->cfg->bt_params->bt_statistics) {
3062 iwl_chain_noise_calibration(priv,
3063 (void *)&priv->_agn.statistics_bt);
3064 iwl_sensitivity_calibration(priv,
3065 (void *)&priv->_agn.statistics_bt);
3066 } else {
3067 iwl_chain_noise_calibration(priv,
3068 (void *)&priv->_agn.statistics);
3069 iwl_sensitivity_calibration(priv,
3070 (void *)&priv->_agn.statistics);
3071 }
3072 }
3073
3074 mutex_unlock(&priv->mutex);
3075 }
3076
3077 static void iwl_bg_restart(struct work_struct *data)
3078 {
3079 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3080
3081 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3082 return;
3083
3084 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
3085 struct iwl_rxon_context *ctx;
3086 bool bt_sco, bt_full_concurrent;
3087 u8 bt_ci_compliance;
3088 u8 bt_load;
3089 u8 bt_status;
3090
3091 mutex_lock(&priv->mutex);
3092 for_each_context(priv, ctx)
3093 ctx->vif = NULL;
3094 priv->is_open = 0;
3095
3096 /*
3097 * __iwl_down() will clear the BT status variables,
3098 * which is correct, but when we restart we really
3099 * want to keep them so restore them afterwards.
3100 *
3101 * The restart process will later pick them up and
3102 * re-configure the hw when we reconfigure the BT
3103 * command.
3104 */
3105 bt_sco = priv->bt_sco_active;
3106 bt_full_concurrent = priv->bt_full_concurrent;
3107 bt_ci_compliance = priv->bt_ci_compliance;
3108 bt_load = priv->bt_traffic_load;
3109 bt_status = priv->bt_status;
3110
3111 __iwl_down(priv);
3112
3113 priv->bt_sco_active = bt_sco;
3114 priv->bt_full_concurrent = bt_full_concurrent;
3115 priv->bt_ci_compliance = bt_ci_compliance;
3116 priv->bt_traffic_load = bt_load;
3117 priv->bt_status = bt_status;
3118
3119 mutex_unlock(&priv->mutex);
3120 iwl_cancel_deferred_work(priv);
3121 ieee80211_restart_hw(priv->hw);
3122 } else {
3123 iwl_down(priv);
3124
3125 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3126 return;
3127
3128 mutex_lock(&priv->mutex);
3129 __iwl_up(priv);
3130 mutex_unlock(&priv->mutex);
3131 }
3132 }
3133
3134 static void iwl_bg_rx_replenish(struct work_struct *data)
3135 {
3136 struct iwl_priv *priv =
3137 container_of(data, struct iwl_priv, rx_replenish);
3138
3139 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3140 return;
3141
3142 mutex_lock(&priv->mutex);
3143 iwlagn_rx_replenish(priv);
3144 mutex_unlock(&priv->mutex);
3145 }
3146
3147 /*****************************************************************************
3148 *
3149 * mac80211 entry point functions
3150 *
3151 *****************************************************************************/
3152
3153 #define UCODE_READY_TIMEOUT (4 * HZ)
3154
3155 /*
3156 * Not a mac80211 entry point function, but it fits in with all the
3157 * other mac80211 functions grouped here.
3158 */
3159 static int iwl_mac_setup_register(struct iwl_priv *priv,
3160 struct iwlagn_ucode_capabilities *capa)
3161 {
3162 int ret;
3163 struct ieee80211_hw *hw = priv->hw;
3164 struct iwl_rxon_context *ctx;
3165
3166 hw->rate_control_algorithm = "iwl-agn-rs";
3167
3168 /* Tell mac80211 our characteristics */
3169 hw->flags = IEEE80211_HW_SIGNAL_DBM |
3170 IEEE80211_HW_AMPDU_AGGREGATION |
3171 IEEE80211_HW_NEED_DTIM_PERIOD |
3172 IEEE80211_HW_SPECTRUM_MGMT |
3173 IEEE80211_HW_REPORTS_TX_ACK_STATUS;
3174
3175 if (!priv->cfg->base_params->broken_powersave)
3176 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
3177 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
3178
3179 if (priv->cfg->sku & IWL_SKU_N)
3180 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
3181 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
3182
3183 hw->sta_data_size = sizeof(struct iwl_station_priv);
3184 hw->vif_data_size = sizeof(struct iwl_vif_priv);
3185
3186 for_each_context(priv, ctx) {
3187 hw->wiphy->interface_modes |= ctx->interface_modes;
3188 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
3189 }
3190
3191 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
3192 WIPHY_FLAG_DISABLE_BEACON_HINTS;
3193
3194 /*
3195 * For now, disable PS by default because it affects
3196 * RX performance significantly.
3197 */
3198 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
3199
3200 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
3201 /* we create the 802.11 header and a zero-length SSID element */
3202 hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2;
3203
3204 /* Default value; 4 EDCA QOS priorities */
3205 hw->queues = 4;
3206
3207 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
3208
3209 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
3210 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3211 &priv->bands[IEEE80211_BAND_2GHZ];
3212 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
3213 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
3214 &priv->bands[IEEE80211_BAND_5GHZ];
3215
3216 ret = ieee80211_register_hw(priv->hw);
3217 if (ret) {
3218 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
3219 return ret;
3220 }
3221 priv->mac80211_registered = 1;
3222
3223 return 0;
3224 }
3225
3226
3227 int iwlagn_mac_start(struct ieee80211_hw *hw)
3228 {
3229 struct iwl_priv *priv = hw->priv;
3230 int ret;
3231
3232 IWL_DEBUG_MAC80211(priv, "enter\n");
3233
3234 /* we should be verifying the device is ready to be opened */
3235 mutex_lock(&priv->mutex);
3236 ret = __iwl_up(priv);
3237 mutex_unlock(&priv->mutex);
3238
3239 if (ret)
3240 return ret;
3241
3242 if (iwl_is_rfkill(priv))
3243 goto out;
3244
3245 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
3246
3247 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
3248 * mac80211 will not be run successfully. */
3249 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3250 test_bit(STATUS_READY, &priv->status),
3251 UCODE_READY_TIMEOUT);
3252 if (!ret) {
3253 if (!test_bit(STATUS_READY, &priv->status)) {
3254 IWL_ERR(priv, "START_ALIVE timeout after %dms.\n",
3255 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3256 return -ETIMEDOUT;
3257 }
3258 }
3259
3260 iwl_led_start(priv);
3261
3262 out:
3263 priv->is_open = 1;
3264 IWL_DEBUG_MAC80211(priv, "leave\n");
3265 return 0;
3266 }
3267
3268 void iwlagn_mac_stop(struct ieee80211_hw *hw)
3269 {
3270 struct iwl_priv *priv = hw->priv;
3271
3272 IWL_DEBUG_MAC80211(priv, "enter\n");
3273
3274 if (!priv->is_open)
3275 return;
3276
3277 priv->is_open = 0;
3278
3279 iwl_down(priv);
3280
3281 flush_workqueue(priv->workqueue);
3282
3283 /* User space software may expect getting rfkill changes
3284 * even if interface is down */
3285 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3286 iwl_enable_rfkill_int(priv);
3287
3288 IWL_DEBUG_MAC80211(priv, "leave\n");
3289 }
3290
3291 int iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3292 {
3293 struct iwl_priv *priv = hw->priv;
3294
3295 IWL_DEBUG_MACDUMP(priv, "enter\n");
3296
3297 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3298 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3299
3300 if (iwlagn_tx_skb(priv, skb))
3301 dev_kfree_skb_any(skb);
3302
3303 IWL_DEBUG_MACDUMP(priv, "leave\n");
3304 return NETDEV_TX_OK;
3305 }
3306
3307 void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
3308 struct ieee80211_vif *vif,
3309 struct ieee80211_key_conf *keyconf,
3310 struct ieee80211_sta *sta,
3311 u32 iv32, u16 *phase1key)
3312 {
3313 struct iwl_priv *priv = hw->priv;
3314 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
3315
3316 IWL_DEBUG_MAC80211(priv, "enter\n");
3317
3318 iwl_update_tkip_key(priv, vif_priv->ctx, keyconf, sta,
3319 iv32, phase1key);
3320
3321 IWL_DEBUG_MAC80211(priv, "leave\n");
3322 }
3323
3324 int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3325 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
3326 struct ieee80211_key_conf *key)
3327 {
3328 struct iwl_priv *priv = hw->priv;
3329 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
3330 struct iwl_rxon_context *ctx = vif_priv->ctx;
3331 int ret;
3332 u8 sta_id;
3333 bool is_default_wep_key = false;
3334
3335 IWL_DEBUG_MAC80211(priv, "enter\n");
3336
3337 if (priv->cfg->mod_params->sw_crypto) {
3338 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
3339 return -EOPNOTSUPP;
3340 }
3341
3342 sta_id = iwl_sta_id_or_broadcast(priv, vif_priv->ctx, sta);
3343 if (sta_id == IWL_INVALID_STATION)
3344 return -EINVAL;
3345
3346 mutex_lock(&priv->mutex);
3347 iwl_scan_cancel_timeout(priv, 100);
3348
3349 /*
3350 * If we are getting WEP group key and we didn't receive any key mapping
3351 * so far, we are in legacy wep mode (group key only), otherwise we are
3352 * in 1X mode.
3353 * In legacy wep mode, we use another host command to the uCode.
3354 */
3355 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
3356 key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
3357 !sta) {
3358 if (cmd == SET_KEY)
3359 is_default_wep_key = !ctx->key_mapping_keys;
3360 else
3361 is_default_wep_key =
3362 (key->hw_key_idx == HW_KEY_DEFAULT);
3363 }
3364
3365 switch (cmd) {
3366 case SET_KEY:
3367 if (is_default_wep_key)
3368 ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
3369 else
3370 ret = iwl_set_dynamic_key(priv, vif_priv->ctx,
3371 key, sta_id);
3372
3373 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
3374 break;
3375 case DISABLE_KEY:
3376 if (is_default_wep_key)
3377 ret = iwl_remove_default_wep_key(priv, ctx, key);
3378 else
3379 ret = iwl_remove_dynamic_key(priv, ctx, key, sta_id);
3380
3381 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
3382 break;
3383 default:
3384 ret = -EINVAL;
3385 }
3386
3387 mutex_unlock(&priv->mutex);
3388 IWL_DEBUG_MAC80211(priv, "leave\n");
3389
3390 return ret;
3391 }
3392
3393 int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
3394 struct ieee80211_vif *vif,
3395 enum ieee80211_ampdu_mlme_action action,
3396 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3397 {
3398 struct iwl_priv *priv = hw->priv;
3399 int ret = -EINVAL;
3400
3401 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
3402 sta->addr, tid);
3403
3404 if (!(priv->cfg->sku & IWL_SKU_N))
3405 return -EACCES;
3406
3407 mutex_lock(&priv->mutex);
3408
3409 switch (action) {
3410 case IEEE80211_AMPDU_RX_START:
3411 IWL_DEBUG_HT(priv, "start Rx\n");
3412 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
3413 break;
3414 case IEEE80211_AMPDU_RX_STOP:
3415 IWL_DEBUG_HT(priv, "stop Rx\n");
3416 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
3417 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3418 ret = 0;
3419 break;
3420 case IEEE80211_AMPDU_TX_START:
3421 IWL_DEBUG_HT(priv, "start Tx\n");
3422 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
3423 if (ret == 0) {
3424 priv->_agn.agg_tids_count++;
3425 IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
3426 priv->_agn.agg_tids_count);
3427 }
3428 break;
3429 case IEEE80211_AMPDU_TX_STOP:
3430 IWL_DEBUG_HT(priv, "stop Tx\n");
3431 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
3432 if ((ret == 0) && (priv->_agn.agg_tids_count > 0)) {
3433 priv->_agn.agg_tids_count--;
3434 IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
3435 priv->_agn.agg_tids_count);
3436 }
3437 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3438 ret = 0;
3439 if (priv->cfg->ht_params &&
3440 priv->cfg->ht_params->use_rts_for_aggregation) {
3441 struct iwl_station_priv *sta_priv =
3442 (void *) sta->drv_priv;
3443 /*
3444 * switch off RTS/CTS if it was previously enabled
3445 */
3446
3447 sta_priv->lq_sta.lq.general_params.flags &=
3448 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
3449 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
3450 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
3451 }
3452 break;
3453 case IEEE80211_AMPDU_TX_OPERATIONAL:
3454 if (priv->cfg->ht_params &&
3455 priv->cfg->ht_params->use_rts_for_aggregation) {
3456 struct iwl_station_priv *sta_priv =
3457 (void *) sta->drv_priv;
3458
3459 /*
3460 * switch to RTS/CTS if it is the prefer protection
3461 * method for HT traffic
3462 */
3463
3464 sta_priv->lq_sta.lq.general_params.flags |=
3465 LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
3466 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
3467 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
3468 }
3469 ret = 0;
3470 break;
3471 }
3472 mutex_unlock(&priv->mutex);
3473
3474 return ret;
3475 }
3476
3477 int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
3478 struct ieee80211_vif *vif,
3479 struct ieee80211_sta *sta)
3480 {
3481 struct iwl_priv *priv = hw->priv;
3482 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
3483 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
3484 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
3485 int ret;
3486 u8 sta_id;
3487
3488 IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
3489 sta->addr);
3490 mutex_lock(&priv->mutex);
3491 IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
3492 sta->addr);
3493 sta_priv->common.sta_id = IWL_INVALID_STATION;
3494
3495 atomic_set(&sta_priv->pending_frames, 0);
3496 if (vif->type == NL80211_IFTYPE_AP)
3497 sta_priv->client = true;
3498
3499 ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
3500 is_ap, sta, &sta_id);
3501 if (ret) {
3502 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
3503 sta->addr, ret);
3504 /* Should we return success if return code is EEXIST ? */
3505 mutex_unlock(&priv->mutex);
3506 return ret;
3507 }
3508
3509 sta_priv->common.sta_id = sta_id;
3510
3511 /* Initialize rate scaling */
3512 IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
3513 sta->addr);
3514 iwl_rs_rate_init(priv, sta, sta_id);
3515 mutex_unlock(&priv->mutex);
3516
3517 return 0;
3518 }
3519
3520 void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
3521 struct ieee80211_channel_switch *ch_switch)
3522 {
3523 struct iwl_priv *priv = hw->priv;
3524 const struct iwl_channel_info *ch_info;
3525 struct ieee80211_conf *conf = &hw->conf;
3526 struct ieee80211_channel *channel = ch_switch->channel;
3527 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
3528 /*
3529 * MULTI-FIXME
3530 * When we add support for multiple interfaces, we need to
3531 * revisit this. The channel switch command in the device
3532 * only affects the BSS context, but what does that really
3533 * mean? And what if we get a CSA on the second interface?
3534 * This needs a lot of work.
3535 */
3536 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
3537 u16 ch;
3538 unsigned long flags = 0;
3539
3540 IWL_DEBUG_MAC80211(priv, "enter\n");
3541
3542 if (iwl_is_rfkill(priv))
3543 goto out_exit;
3544
3545 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
3546 test_bit(STATUS_SCANNING, &priv->status))
3547 goto out_exit;
3548
3549 if (!iwl_is_associated_ctx(ctx))
3550 goto out_exit;
3551
3552 /* channel switch in progress */
3553 if (priv->switch_rxon.switch_in_progress == true)
3554 goto out_exit;
3555
3556 mutex_lock(&priv->mutex);
3557 if (priv->cfg->ops->lib->set_channel_switch) {
3558
3559 ch = channel->hw_value;
3560 if (le16_to_cpu(ctx->active.channel) != ch) {
3561 ch_info = iwl_get_channel_info(priv,
3562 channel->band,
3563 ch);
3564 if (!is_channel_valid(ch_info)) {
3565 IWL_DEBUG_MAC80211(priv, "invalid channel\n");
3566 goto out;
3567 }
3568 spin_lock_irqsave(&priv->lock, flags);
3569
3570 priv->current_ht_config.smps = conf->smps_mode;
3571
3572 /* Configure HT40 channels */
3573 ctx->ht.enabled = conf_is_ht(conf);
3574 if (ctx->ht.enabled) {
3575 if (conf_is_ht40_minus(conf)) {
3576 ctx->ht.extension_chan_offset =
3577 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3578 ctx->ht.is_40mhz = true;
3579 } else if (conf_is_ht40_plus(conf)) {
3580 ctx->ht.extension_chan_offset =
3581 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3582 ctx->ht.is_40mhz = true;
3583 } else {
3584 ctx->ht.extension_chan_offset =
3585 IEEE80211_HT_PARAM_CHA_SEC_NONE;
3586 ctx->ht.is_40mhz = false;
3587 }
3588 } else
3589 ctx->ht.is_40mhz = false;
3590
3591 if ((le16_to_cpu(ctx->staging.channel) != ch))
3592 ctx->staging.flags = 0;
3593
3594 iwl_set_rxon_channel(priv, channel, ctx);
3595 iwl_set_rxon_ht(priv, ht_conf);
3596 iwl_set_flags_for_band(priv, ctx, channel->band,
3597 ctx->vif);
3598 spin_unlock_irqrestore(&priv->lock, flags);
3599
3600 iwl_set_rate(priv);
3601 /*
3602 * at this point, staging_rxon has the
3603 * configuration for channel switch
3604 */
3605 if (priv->cfg->ops->lib->set_channel_switch(priv,
3606 ch_switch))
3607 priv->switch_rxon.switch_in_progress = false;
3608 }
3609 }
3610 out:
3611 mutex_unlock(&priv->mutex);
3612 out_exit:
3613 if (!priv->switch_rxon.switch_in_progress)
3614 ieee80211_chswitch_done(ctx->vif, false);
3615 IWL_DEBUG_MAC80211(priv, "leave\n");
3616 }
3617
3618 void iwlagn_configure_filter(struct ieee80211_hw *hw,
3619 unsigned int changed_flags,
3620 unsigned int *total_flags,
3621 u64 multicast)
3622 {
3623 struct iwl_priv *priv = hw->priv;
3624 __le32 filter_or = 0, filter_nand = 0;
3625 struct iwl_rxon_context *ctx;
3626
3627 #define CHK(test, flag) do { \
3628 if (*total_flags & (test)) \
3629 filter_or |= (flag); \
3630 else \
3631 filter_nand |= (flag); \
3632 } while (0)
3633
3634 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
3635 changed_flags, *total_flags);
3636
3637 CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
3638 /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
3639 CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
3640 CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
3641
3642 #undef CHK
3643
3644 mutex_lock(&priv->mutex);
3645
3646 for_each_context(priv, ctx) {
3647 ctx->staging.filter_flags &= ~filter_nand;
3648 ctx->staging.filter_flags |= filter_or;
3649
3650 /*
3651 * Not committing directly because hardware can perform a scan,
3652 * but we'll eventually commit the filter flags change anyway.
3653 */
3654 }
3655
3656 mutex_unlock(&priv->mutex);
3657
3658 /*
3659 * Receiving all multicast frames is always enabled by the
3660 * default flags setup in iwl_connection_init_rx_config()
3661 * since we currently do not support programming multicast
3662 * filters into the device.
3663 */
3664 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
3665 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3666 }
3667
3668 void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
3669 {
3670 struct iwl_priv *priv = hw->priv;
3671
3672 mutex_lock(&priv->mutex);
3673 IWL_DEBUG_MAC80211(priv, "enter\n");
3674
3675 /* do not support "flush" */
3676 if (!priv->cfg->ops->lib->txfifo_flush)
3677 goto done;
3678
3679 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3680 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
3681 goto done;
3682 }
3683 if (iwl_is_rfkill(priv)) {
3684 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
3685 goto done;
3686 }
3687
3688 /*
3689 * mac80211 will not push any more frames for transmit
3690 * until the flush is completed
3691 */
3692 if (drop) {
3693 IWL_DEBUG_MAC80211(priv, "send flush command\n");
3694 if (priv->cfg->ops->lib->txfifo_flush(priv, IWL_DROP_ALL)) {
3695 IWL_ERR(priv, "flush request fail\n");
3696 goto done;
3697 }
3698 }
3699 IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
3700 iwlagn_wait_tx_queue_empty(priv);
3701 done:
3702 mutex_unlock(&priv->mutex);
3703 IWL_DEBUG_MAC80211(priv, "leave\n");
3704 }
3705
3706 /*****************************************************************************
3707 *
3708 * driver setup and teardown
3709 *
3710 *****************************************************************************/
3711
3712 static void iwl_setup_deferred_work(struct iwl_priv *priv)
3713 {
3714 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3715
3716 init_waitqueue_head(&priv->wait_command_queue);
3717
3718 INIT_WORK(&priv->restart, iwl_bg_restart);
3719 INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
3720 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
3721 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
3722 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
3723 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
3724 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
3725 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
3726 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
3727
3728 iwl_setup_scan_deferred_work(priv);
3729
3730 if (priv->cfg->ops->lib->setup_deferred_work)
3731 priv->cfg->ops->lib->setup_deferred_work(priv);
3732
3733 init_timer(&priv->statistics_periodic);
3734 priv->statistics_periodic.data = (unsigned long)priv;
3735 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3736
3737 init_timer(&priv->ucode_trace);
3738 priv->ucode_trace.data = (unsigned long)priv;
3739 priv->ucode_trace.function = iwl_bg_ucode_trace;
3740
3741 init_timer(&priv->watchdog);
3742 priv->watchdog.data = (unsigned long)priv;
3743 priv->watchdog.function = iwl_bg_watchdog;
3744
3745 if (!priv->cfg->base_params->use_isr_legacy)
3746 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3747 iwl_irq_tasklet, (unsigned long)priv);
3748 else
3749 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3750 iwl_irq_tasklet_legacy, (unsigned long)priv);
3751 }
3752
3753 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3754 {
3755 if (priv->cfg->ops->lib->cancel_deferred_work)
3756 priv->cfg->ops->lib->cancel_deferred_work(priv);
3757
3758 cancel_delayed_work_sync(&priv->init_alive_start);
3759 cancel_delayed_work(&priv->alive_start);
3760 cancel_work_sync(&priv->run_time_calib_work);
3761 cancel_work_sync(&priv->beacon_update);
3762
3763 iwl_cancel_scan_deferred_work(priv);
3764
3765 cancel_work_sync(&priv->bt_full_concurrency);
3766 cancel_work_sync(&priv->bt_runtime_config);
3767
3768 del_timer_sync(&priv->statistics_periodic);
3769 del_timer_sync(&priv->ucode_trace);
3770 }
3771
3772 static void iwl_init_hw_rates(struct iwl_priv *priv,
3773 struct ieee80211_rate *rates)
3774 {
3775 int i;
3776
3777 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
3778 rates[i].bitrate = iwl_rates[i].ieee * 5;
3779 rates[i].hw_value = i; /* Rate scaling will work on indexes */
3780 rates[i].hw_value_short = i;
3781 rates[i].flags = 0;
3782 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
3783 /*
3784 * If CCK != 1M then set short preamble rate flag.
3785 */
3786 rates[i].flags |=
3787 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
3788 0 : IEEE80211_RATE_SHORT_PREAMBLE;
3789 }
3790 }
3791 }
3792
3793 static int iwl_init_drv(struct iwl_priv *priv)
3794 {
3795 int ret;
3796
3797 spin_lock_init(&priv->sta_lock);
3798 spin_lock_init(&priv->hcmd_lock);
3799
3800 INIT_LIST_HEAD(&priv->free_frames);
3801
3802 mutex_init(&priv->mutex);
3803 mutex_init(&priv->sync_cmd_mutex);
3804
3805 priv->ieee_channels = NULL;
3806 priv->ieee_rates = NULL;
3807 priv->band = IEEE80211_BAND_2GHZ;
3808
3809 priv->iw_mode = NL80211_IFTYPE_STATION;
3810 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
3811 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
3812 priv->_agn.agg_tids_count = 0;
3813
3814 /* initialize force reset */
3815 priv->force_reset[IWL_RF_RESET].reset_duration =
3816 IWL_DELAY_NEXT_FORCE_RF_RESET;
3817 priv->force_reset[IWL_FW_RESET].reset_duration =
3818 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
3819
3820 /* Choose which receivers/antennas to use */
3821 if (priv->cfg->ops->hcmd->set_rxon_chain)
3822 priv->cfg->ops->hcmd->set_rxon_chain(priv,
3823 &priv->contexts[IWL_RXON_CTX_BSS]);
3824
3825 iwl_init_scan_params(priv);
3826
3827 /* init bt coex */
3828 if (priv->cfg->bt_params &&
3829 priv->cfg->bt_params->advanced_bt_coexist) {
3830 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
3831 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
3832 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
3833 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
3834 priv->bt_duration = BT_DURATION_LIMIT_DEF;
3835 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
3836 }
3837
3838 /* Set the tx_power_user_lmt to the lowest power level
3839 * this value will get overwritten by channel max power avg
3840 * from eeprom */
3841 priv->tx_power_user_lmt = IWLAGN_TX_POWER_TARGET_POWER_MIN;
3842 priv->tx_power_next = IWLAGN_TX_POWER_TARGET_POWER_MIN;
3843
3844 ret = iwl_init_channel_map(priv);
3845 if (ret) {
3846 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3847 goto err;
3848 }
3849
3850 ret = iwlcore_init_geos(priv);
3851 if (ret) {
3852 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3853 goto err_free_channel_map;
3854 }
3855 iwl_init_hw_rates(priv, priv->ieee_rates);
3856
3857 return 0;
3858
3859 err_free_channel_map:
3860 iwl_free_channel_map(priv);
3861 err:
3862 return ret;
3863 }
3864
3865 static void iwl_uninit_drv(struct iwl_priv *priv)
3866 {
3867 iwl_calib_free_results(priv);
3868 iwlcore_free_geos(priv);
3869 iwl_free_channel_map(priv);
3870 kfree(priv->scan_cmd);
3871 }
3872
3873 #ifdef CONFIG_IWL5000
3874 struct ieee80211_ops iwlagn_hw_ops = {
3875 .tx = iwlagn_mac_tx,
3876 .start = iwlagn_mac_start,
3877 .stop = iwlagn_mac_stop,
3878 .add_interface = iwl_mac_add_interface,
3879 .remove_interface = iwl_mac_remove_interface,
3880 .change_interface = iwl_mac_change_interface,
3881 .config = iwlagn_mac_config,
3882 .configure_filter = iwlagn_configure_filter,
3883 .set_key = iwlagn_mac_set_key,
3884 .update_tkip_key = iwlagn_mac_update_tkip_key,
3885 .conf_tx = iwl_mac_conf_tx,
3886 .bss_info_changed = iwlagn_bss_info_changed,
3887 .ampdu_action = iwlagn_mac_ampdu_action,
3888 .hw_scan = iwl_mac_hw_scan,
3889 .sta_notify = iwlagn_mac_sta_notify,
3890 .sta_add = iwlagn_mac_sta_add,
3891 .sta_remove = iwl_mac_sta_remove,
3892 .channel_switch = iwlagn_mac_channel_switch,
3893 .flush = iwlagn_mac_flush,
3894 .tx_last_beacon = iwl_mac_tx_last_beacon,
3895 };
3896 #endif
3897
3898 static void iwl_hw_detect(struct iwl_priv *priv)
3899 {
3900 priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
3901 priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
3902 pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
3903 IWL_DEBUG_INFO(priv, "HW Revision ID = 0x%X\n", priv->rev_id);
3904 }
3905
3906 static int iwl_set_hw_params(struct iwl_priv *priv)
3907 {
3908 priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
3909 priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
3910 if (priv->cfg->mod_params->amsdu_size_8K)
3911 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_8K);
3912 else
3913 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_4K);
3914
3915 priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
3916
3917 if (priv->cfg->mod_params->disable_11n)
3918 priv->cfg->sku &= ~IWL_SKU_N;
3919
3920 /* Device-specific setup */
3921 return priv->cfg->ops->lib->set_hw_params(priv);
3922 }
3923
3924 static const u8 iwlagn_bss_ac_to_fifo[] = {
3925 IWL_TX_FIFO_VO,
3926 IWL_TX_FIFO_VI,
3927 IWL_TX_FIFO_BE,
3928 IWL_TX_FIFO_BK,
3929 };
3930
3931 static const u8 iwlagn_bss_ac_to_queue[] = {
3932 0, 1, 2, 3,
3933 };
3934
3935 static const u8 iwlagn_pan_ac_to_fifo[] = {
3936 IWL_TX_FIFO_VO_IPAN,
3937 IWL_TX_FIFO_VI_IPAN,
3938 IWL_TX_FIFO_BE_IPAN,
3939 IWL_TX_FIFO_BK_IPAN,
3940 };
3941
3942 static const u8 iwlagn_pan_ac_to_queue[] = {
3943 7, 6, 5, 4,
3944 };
3945
3946 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3947 {
3948 int err = 0, i;
3949 struct iwl_priv *priv;
3950 struct ieee80211_hw *hw;
3951 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3952 unsigned long flags;
3953 u16 pci_cmd, num_mac;
3954
3955 /************************
3956 * 1. Allocating HW data
3957 ************************/
3958
3959 /* Disabling hardware scan means that mac80211 will perform scans
3960 * "the hard way", rather than using device's scan. */
3961 if (cfg->mod_params->disable_hw_scan) {
3962 dev_printk(KERN_DEBUG, &(pdev->dev),
3963 "sw scan support is deprecated\n");
3964 #ifdef CONFIG_IWL5000
3965 iwlagn_hw_ops.hw_scan = NULL;
3966 #endif
3967 #ifdef CONFIG_IWL4965
3968 iwl4965_hw_ops.hw_scan = NULL;
3969 #endif
3970 }
3971
3972 hw = iwl_alloc_all(cfg);
3973 if (!hw) {
3974 err = -ENOMEM;
3975 goto out;
3976 }
3977 priv = hw->priv;
3978 /* At this point both hw and priv are allocated. */
3979
3980 /*
3981 * The default context is always valid,
3982 * more may be discovered when firmware
3983 * is loaded.
3984 */
3985 priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
3986
3987 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
3988 priv->contexts[i].ctxid = i;
3989
3990 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
3991 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
3992 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
3993 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
3994 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
3995 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
3996 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
3997 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
3998 priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo = iwlagn_bss_ac_to_fifo;
3999 priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue = iwlagn_bss_ac_to_queue;
4000 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
4001 BIT(NL80211_IFTYPE_ADHOC);
4002 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
4003 BIT(NL80211_IFTYPE_STATION);
4004 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
4005 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
4006 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
4007 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
4008
4009 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
4010 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd = REPLY_WIPAN_RXON_TIMING;
4011 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd = REPLY_WIPAN_RXON_ASSOC;
4012 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
4013 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
4014 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
4015 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
4016 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
4017 priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo = iwlagn_pan_ac_to_fifo;
4018 priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue = iwlagn_pan_ac_to_queue;
4019 priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
4020 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
4021 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
4022 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
4023 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
4024 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
4025
4026 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
4027
4028 SET_IEEE80211_DEV(hw, &pdev->dev);
4029
4030 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
4031 priv->cfg = cfg;
4032 priv->pci_dev = pdev;
4033 priv->inta_mask = CSR_INI_SET_MASK;
4034
4035 /* is antenna coupling more than 35dB ? */
4036 priv->bt_ant_couple_ok =
4037 (iwlagn_ant_coupling > IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
4038 true : false;
4039
4040 /* enable/disable bt channel inhibition */
4041 priv->bt_ch_announce = iwlagn_bt_ch_announce;
4042 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
4043 (priv->bt_ch_announce) ? "On" : "Off");
4044
4045 if (iwl_alloc_traffic_mem(priv))
4046 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
4047
4048 /**************************
4049 * 2. Initializing PCI bus
4050 **************************/
4051 pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 |
4052 PCIE_LINK_STATE_CLKPM);
4053
4054 if (pci_enable_device(pdev)) {
4055 err = -ENODEV;
4056 goto out_ieee80211_free_hw;
4057 }
4058
4059 pci_set_master(pdev);
4060
4061 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
4062 if (!err)
4063 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
4064 if (err) {
4065 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4066 if (!err)
4067 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
4068 /* both attempts failed: */
4069 if (err) {
4070 IWL_WARN(priv, "No suitable DMA available.\n");
4071 goto out_pci_disable_device;
4072 }
4073 }
4074
4075 err = pci_request_regions(pdev, DRV_NAME);
4076 if (err)
4077 goto out_pci_disable_device;
4078
4079 pci_set_drvdata(pdev, priv);
4080
4081
4082 /***********************
4083 * 3. Read REV register
4084 ***********************/
4085 priv->hw_base = pci_iomap(pdev, 0, 0);
4086 if (!priv->hw_base) {
4087 err = -ENODEV;
4088 goto out_pci_release_regions;
4089 }
4090
4091 IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
4092 (unsigned long long) pci_resource_len(pdev, 0));
4093 IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
4094
4095 /* these spin locks will be used in apm_ops.init and EEPROM access
4096 * we should init now
4097 */
4098 spin_lock_init(&priv->reg_lock);
4099 spin_lock_init(&priv->lock);
4100
4101 /*
4102 * stop and reset the on-board processor just in case it is in a
4103 * strange state ... like being left stranded by a primary kernel
4104 * and this is now the kdump kernel trying to start up
4105 */
4106 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
4107
4108 iwl_hw_detect(priv);
4109 IWL_INFO(priv, "Detected %s, REV=0x%X\n",
4110 priv->cfg->name, priv->hw_rev);
4111
4112 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4113 * PCI Tx retries from interfering with C3 CPU state */
4114 pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
4115
4116 iwl_prepare_card_hw(priv);
4117 if (!priv->hw_ready) {
4118 IWL_WARN(priv, "Failed, HW not ready\n");
4119 goto out_iounmap;
4120 }
4121
4122 /*****************
4123 * 4. Read EEPROM
4124 *****************/
4125 /* Read the EEPROM */
4126 err = iwl_eeprom_init(priv);
4127 if (err) {
4128 IWL_ERR(priv, "Unable to init EEPROM\n");
4129 goto out_iounmap;
4130 }
4131 err = iwl_eeprom_check_version(priv);
4132 if (err)
4133 goto out_free_eeprom;
4134
4135 err = iwl_eeprom_check_sku(priv);
4136 if (err)
4137 goto out_free_eeprom;
4138
4139 /* extract MAC Address */
4140 iwl_eeprom_get_mac(priv, priv->addresses[0].addr);
4141 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
4142 priv->hw->wiphy->addresses = priv->addresses;
4143 priv->hw->wiphy->n_addresses = 1;
4144 num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS);
4145 if (num_mac > 1) {
4146 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
4147 ETH_ALEN);
4148 priv->addresses[1].addr[5]++;
4149 priv->hw->wiphy->n_addresses++;
4150 }
4151
4152 /************************
4153 * 5. Setup HW constants
4154 ************************/
4155 if (iwl_set_hw_params(priv)) {
4156 IWL_ERR(priv, "failed to set hw parameters\n");
4157 goto out_free_eeprom;
4158 }
4159
4160 /*******************
4161 * 6. Setup priv
4162 *******************/
4163
4164 err = iwl_init_drv(priv);
4165 if (err)
4166 goto out_free_eeprom;
4167 /* At this point both hw and priv are initialized. */
4168
4169 /********************
4170 * 7. Setup services
4171 ********************/
4172 spin_lock_irqsave(&priv->lock, flags);
4173 iwl_disable_interrupts(priv);
4174 spin_unlock_irqrestore(&priv->lock, flags);
4175
4176 pci_enable_msi(priv->pci_dev);
4177
4178 if (priv->cfg->ops->lib->isr_ops.alloc)
4179 priv->cfg->ops->lib->isr_ops.alloc(priv);
4180
4181 err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr_ops.isr,
4182 IRQF_SHARED, DRV_NAME, priv);
4183 if (err) {
4184 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
4185 goto out_disable_msi;
4186 }
4187
4188 iwl_setup_deferred_work(priv);
4189 iwl_setup_rx_handlers(priv);
4190
4191 /*********************************************
4192 * 8. Enable interrupts and read RFKILL state
4193 *********************************************/
4194
4195 /* enable rfkill interrupt: hw bug w/a */
4196 pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
4197 if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
4198 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
4199 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
4200 }
4201
4202 iwl_enable_rfkill_int(priv);
4203
4204 /* If platform's RF_KILL switch is NOT set to KILL */
4205 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
4206 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4207 else
4208 set_bit(STATUS_RF_KILL_HW, &priv->status);
4209
4210 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
4211 test_bit(STATUS_RF_KILL_HW, &priv->status));
4212
4213 iwl_power_initialize(priv);
4214 iwl_tt_initialize(priv);
4215
4216 init_completion(&priv->_agn.firmware_loading_complete);
4217
4218 err = iwl_request_firmware(priv, true);
4219 if (err)
4220 goto out_destroy_workqueue;
4221
4222 return 0;
4223
4224 out_destroy_workqueue:
4225 destroy_workqueue(priv->workqueue);
4226 priv->workqueue = NULL;
4227 free_irq(priv->pci_dev->irq, priv);
4228 if (priv->cfg->ops->lib->isr_ops.free)
4229 priv->cfg->ops->lib->isr_ops.free(priv);
4230 out_disable_msi:
4231 pci_disable_msi(priv->pci_dev);
4232 iwl_uninit_drv(priv);
4233 out_free_eeprom:
4234 iwl_eeprom_free(priv);
4235 out_iounmap:
4236 pci_iounmap(pdev, priv->hw_base);
4237 out_pci_release_regions:
4238 pci_set_drvdata(pdev, NULL);
4239 pci_release_regions(pdev);
4240 out_pci_disable_device:
4241 pci_disable_device(pdev);
4242 out_ieee80211_free_hw:
4243 iwl_free_traffic_mem(priv);
4244 ieee80211_free_hw(priv->hw);
4245 out:
4246 return err;
4247 }
4248
4249 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
4250 {
4251 struct iwl_priv *priv = pci_get_drvdata(pdev);
4252 unsigned long flags;
4253
4254 if (!priv)
4255 return;
4256
4257 wait_for_completion(&priv->_agn.firmware_loading_complete);
4258
4259 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
4260
4261 iwl_dbgfs_unregister(priv);
4262 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
4263
4264 /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
4265 * to be called and iwl_down since we are removing the device
4266 * we need to set STATUS_EXIT_PENDING bit.
4267 */
4268 set_bit(STATUS_EXIT_PENDING, &priv->status);
4269 if (priv->mac80211_registered) {
4270 ieee80211_unregister_hw(priv->hw);
4271 priv->mac80211_registered = 0;
4272 } else {
4273 iwl_down(priv);
4274 }
4275
4276 /*
4277 * Make sure device is reset to low power before unloading driver.
4278 * This may be redundant with iwl_down(), but there are paths to
4279 * run iwl_down() without calling apm_ops.stop(), and there are
4280 * paths to avoid running iwl_down() at all before leaving driver.
4281 * This (inexpensive) call *makes sure* device is reset.
4282 */
4283 iwl_apm_stop(priv);
4284
4285 iwl_tt_exit(priv);
4286
4287 /* make sure we flush any pending irq or
4288 * tasklet for the driver
4289 */
4290 spin_lock_irqsave(&priv->lock, flags);
4291 iwl_disable_interrupts(priv);
4292 spin_unlock_irqrestore(&priv->lock, flags);
4293
4294 iwl_synchronize_irq(priv);
4295
4296 iwl_dealloc_ucode_pci(priv);
4297
4298 if (priv->rxq.bd)
4299 iwlagn_rx_queue_free(priv, &priv->rxq);
4300 iwlagn_hw_txq_ctx_free(priv);
4301
4302 iwl_eeprom_free(priv);
4303
4304
4305 /*netif_stop_queue(dev); */
4306 flush_workqueue(priv->workqueue);
4307
4308 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
4309 * priv->workqueue... so we can't take down the workqueue
4310 * until now... */
4311 destroy_workqueue(priv->workqueue);
4312 priv->workqueue = NULL;
4313 iwl_free_traffic_mem(priv);
4314
4315 free_irq(priv->pci_dev->irq, priv);
4316 pci_disable_msi(priv->pci_dev);
4317 pci_iounmap(pdev, priv->hw_base);
4318 pci_release_regions(pdev);
4319 pci_disable_device(pdev);
4320 pci_set_drvdata(pdev, NULL);
4321
4322 iwl_uninit_drv(priv);
4323
4324 if (priv->cfg->ops->lib->isr_ops.free)
4325 priv->cfg->ops->lib->isr_ops.free(priv);
4326
4327 dev_kfree_skb(priv->beacon_skb);
4328
4329 ieee80211_free_hw(priv->hw);
4330 }
4331
4332
4333 /*****************************************************************************
4334 *
4335 * driver and module entry point
4336 *
4337 *****************************************************************************/
4338
4339 /* Hardware specific file defines the PCI IDs table for that hardware module */
4340 static DEFINE_PCI_DEVICE_TABLE(iwl_hw_card_ids) = {
4341 #ifdef CONFIG_IWL4965
4342 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4343 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4344 #endif /* CONFIG_IWL4965 */
4345 #ifdef CONFIG_IWL5000
4346 /* 5100 Series WiFi */
4347 {IWL_PCI_DEVICE(0x4232, 0x1201, iwl5100_agn_cfg)}, /* Mini Card */
4348 {IWL_PCI_DEVICE(0x4232, 0x1301, iwl5100_agn_cfg)}, /* Half Mini Card */
4349 {IWL_PCI_DEVICE(0x4232, 0x1204, iwl5100_agn_cfg)}, /* Mini Card */
4350 {IWL_PCI_DEVICE(0x4232, 0x1304, iwl5100_agn_cfg)}, /* Half Mini Card */
4351 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bgn_cfg)}, /* Mini Card */
4352 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bgn_cfg)}, /* Half Mini Card */
4353 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)}, /* Mini Card */
4354 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)}, /* Half Mini Card */
4355 {IWL_PCI_DEVICE(0x4232, 0x1221, iwl5100_agn_cfg)}, /* Mini Card */
4356 {IWL_PCI_DEVICE(0x4232, 0x1321, iwl5100_agn_cfg)}, /* Half Mini Card */
4357 {IWL_PCI_DEVICE(0x4232, 0x1224, iwl5100_agn_cfg)}, /* Mini Card */
4358 {IWL_PCI_DEVICE(0x4232, 0x1324, iwl5100_agn_cfg)}, /* Half Mini Card */
4359 {IWL_PCI_DEVICE(0x4232, 0x1225, iwl5100_bgn_cfg)}, /* Mini Card */
4360 {IWL_PCI_DEVICE(0x4232, 0x1325, iwl5100_bgn_cfg)}, /* Half Mini Card */
4361 {IWL_PCI_DEVICE(0x4232, 0x1226, iwl5100_abg_cfg)}, /* Mini Card */
4362 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)}, /* Half Mini Card */
4363 {IWL_PCI_DEVICE(0x4237, 0x1211, iwl5100_agn_cfg)}, /* Mini Card */
4364 {IWL_PCI_DEVICE(0x4237, 0x1311, iwl5100_agn_cfg)}, /* Half Mini Card */
4365 {IWL_PCI_DEVICE(0x4237, 0x1214, iwl5100_agn_cfg)}, /* Mini Card */
4366 {IWL_PCI_DEVICE(0x4237, 0x1314, iwl5100_agn_cfg)}, /* Half Mini Card */
4367 {IWL_PCI_DEVICE(0x4237, 0x1215, iwl5100_bgn_cfg)}, /* Mini Card */
4368 {IWL_PCI_DEVICE(0x4237, 0x1315, iwl5100_bgn_cfg)}, /* Half Mini Card */
4369 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)}, /* Mini Card */
4370 {IWL_PCI_DEVICE(0x4237, 0x1316, iwl5100_abg_cfg)}, /* Half Mini Card */
4371
4372 /* 5300 Series WiFi */
4373 {IWL_PCI_DEVICE(0x4235, 0x1021, iwl5300_agn_cfg)}, /* Mini Card */
4374 {IWL_PCI_DEVICE(0x4235, 0x1121, iwl5300_agn_cfg)}, /* Half Mini Card */
4375 {IWL_PCI_DEVICE(0x4235, 0x1024, iwl5300_agn_cfg)}, /* Mini Card */
4376 {IWL_PCI_DEVICE(0x4235, 0x1124, iwl5300_agn_cfg)}, /* Half Mini Card */
4377 {IWL_PCI_DEVICE(0x4235, 0x1001, iwl5300_agn_cfg)}, /* Mini Card */
4378 {IWL_PCI_DEVICE(0x4235, 0x1101, iwl5300_agn_cfg)}, /* Half Mini Card */
4379 {IWL_PCI_DEVICE(0x4235, 0x1004, iwl5300_agn_cfg)}, /* Mini Card */
4380 {IWL_PCI_DEVICE(0x4235, 0x1104, iwl5300_agn_cfg)}, /* Half Mini Card */
4381 {IWL_PCI_DEVICE(0x4236, 0x1011, iwl5300_agn_cfg)}, /* Mini Card */
4382 {IWL_PCI_DEVICE(0x4236, 0x1111, iwl5300_agn_cfg)}, /* Half Mini Card */
4383 {IWL_PCI_DEVICE(0x4236, 0x1014, iwl5300_agn_cfg)}, /* Mini Card */
4384 {IWL_PCI_DEVICE(0x4236, 0x1114, iwl5300_agn_cfg)}, /* Half Mini Card */
4385
4386 /* 5350 Series WiFi/WiMax */
4387 {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)}, /* Mini Card */
4388 {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)}, /* Mini Card */
4389 {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)}, /* Mini Card */
4390
4391 /* 5150 Series Wifi/WiMax */
4392 {IWL_PCI_DEVICE(0x423C, 0x1201, iwl5150_agn_cfg)}, /* Mini Card */
4393 {IWL_PCI_DEVICE(0x423C, 0x1301, iwl5150_agn_cfg)}, /* Half Mini Card */
4394 {IWL_PCI_DEVICE(0x423C, 0x1206, iwl5150_abg_cfg)}, /* Mini Card */
4395 {IWL_PCI_DEVICE(0x423C, 0x1306, iwl5150_abg_cfg)}, /* Half Mini Card */
4396 {IWL_PCI_DEVICE(0x423C, 0x1221, iwl5150_agn_cfg)}, /* Mini Card */
4397 {IWL_PCI_DEVICE(0x423C, 0x1321, iwl5150_agn_cfg)}, /* Half Mini Card */
4398
4399 {IWL_PCI_DEVICE(0x423D, 0x1211, iwl5150_agn_cfg)}, /* Mini Card */
4400 {IWL_PCI_DEVICE(0x423D, 0x1311, iwl5150_agn_cfg)}, /* Half Mini Card */
4401 {IWL_PCI_DEVICE(0x423D, 0x1216, iwl5150_abg_cfg)}, /* Mini Card */
4402 {IWL_PCI_DEVICE(0x423D, 0x1316, iwl5150_abg_cfg)}, /* Half Mini Card */
4403
4404 /* 6x00 Series */
4405 {IWL_PCI_DEVICE(0x422B, 0x1101, iwl6000_3agn_cfg)},
4406 {IWL_PCI_DEVICE(0x422B, 0x1121, iwl6000_3agn_cfg)},
4407 {IWL_PCI_DEVICE(0x422C, 0x1301, iwl6000i_2agn_cfg)},
4408 {IWL_PCI_DEVICE(0x422C, 0x1306, iwl6000i_2abg_cfg)},
4409 {IWL_PCI_DEVICE(0x422C, 0x1307, iwl6000i_2bg_cfg)},
4410 {IWL_PCI_DEVICE(0x422C, 0x1321, iwl6000i_2agn_cfg)},
4411 {IWL_PCI_DEVICE(0x422C, 0x1326, iwl6000i_2abg_cfg)},
4412 {IWL_PCI_DEVICE(0x4238, 0x1111, iwl6000_3agn_cfg)},
4413 {IWL_PCI_DEVICE(0x4239, 0x1311, iwl6000i_2agn_cfg)},
4414 {IWL_PCI_DEVICE(0x4239, 0x1316, iwl6000i_2abg_cfg)},
4415
4416 /* 6x05 Series */
4417 {IWL_PCI_DEVICE(0x0082, 0x1301, iwl6005_2agn_cfg)},
4418 {IWL_PCI_DEVICE(0x0082, 0x1306, iwl6005_2abg_cfg)},
4419 {IWL_PCI_DEVICE(0x0082, 0x1307, iwl6005_2bg_cfg)},
4420 {IWL_PCI_DEVICE(0x0082, 0x1321, iwl6005_2agn_cfg)},
4421 {IWL_PCI_DEVICE(0x0082, 0x1326, iwl6005_2abg_cfg)},
4422 {IWL_PCI_DEVICE(0x0085, 0x1311, iwl6005_2agn_cfg)},
4423 {IWL_PCI_DEVICE(0x0085, 0x1316, iwl6005_2abg_cfg)},
4424
4425 /* 6x30 Series */
4426 {IWL_PCI_DEVICE(0x008A, 0x5305, iwl1030_bgn_cfg)},
4427 {IWL_PCI_DEVICE(0x008A, 0x5307, iwl1030_bg_cfg)},
4428 {IWL_PCI_DEVICE(0x008A, 0x5325, iwl1030_bgn_cfg)},
4429 {IWL_PCI_DEVICE(0x008A, 0x5327, iwl1030_bg_cfg)},
4430 {IWL_PCI_DEVICE(0x008B, 0x5315, iwl1030_bgn_cfg)},
4431 {IWL_PCI_DEVICE(0x008B, 0x5317, iwl1030_bg_cfg)},
4432 {IWL_PCI_DEVICE(0x0090, 0x5211, iwl6030_2agn_cfg)},
4433 {IWL_PCI_DEVICE(0x0090, 0x5215, iwl6030_2bgn_cfg)},
4434 {IWL_PCI_DEVICE(0x0090, 0x5216, iwl6030_2abg_cfg)},
4435 {IWL_PCI_DEVICE(0x0091, 0x5201, iwl6030_2agn_cfg)},
4436 {IWL_PCI_DEVICE(0x0091, 0x5205, iwl6030_2bgn_cfg)},
4437 {IWL_PCI_DEVICE(0x0091, 0x5206, iwl6030_2abg_cfg)},
4438 {IWL_PCI_DEVICE(0x0091, 0x5207, iwl6030_2bg_cfg)},
4439 {IWL_PCI_DEVICE(0x0091, 0x5221, iwl6030_2agn_cfg)},
4440 {IWL_PCI_DEVICE(0x0091, 0x5225, iwl6030_2bgn_cfg)},
4441 {IWL_PCI_DEVICE(0x0091, 0x5226, iwl6030_2abg_cfg)},
4442
4443 /* 6x50 WiFi/WiMax Series */
4444 {IWL_PCI_DEVICE(0x0087, 0x1301, iwl6050_2agn_cfg)},
4445 {IWL_PCI_DEVICE(0x0087, 0x1306, iwl6050_2abg_cfg)},
4446 {IWL_PCI_DEVICE(0x0087, 0x1321, iwl6050_2agn_cfg)},
4447 {IWL_PCI_DEVICE(0x0087, 0x1326, iwl6050_2abg_cfg)},
4448 {IWL_PCI_DEVICE(0x0089, 0x1311, iwl6050_2agn_cfg)},
4449 {IWL_PCI_DEVICE(0x0089, 0x1316, iwl6050_2abg_cfg)},
4450
4451 /* 6150 WiFi/WiMax Series */
4452 {IWL_PCI_DEVICE(0x0885, 0x1305, iwl6150_bgn_cfg)},
4453 {IWL_PCI_DEVICE(0x0885, 0x1306, iwl6150_bgn_cfg)},
4454 {IWL_PCI_DEVICE(0x0885, 0x1325, iwl6150_bgn_cfg)},
4455 {IWL_PCI_DEVICE(0x0885, 0x1326, iwl6150_bgn_cfg)},
4456 {IWL_PCI_DEVICE(0x0886, 0x1315, iwl6150_bgn_cfg)},
4457 {IWL_PCI_DEVICE(0x0886, 0x1316, iwl6150_bgn_cfg)},
4458
4459 /* 1000 Series WiFi */
4460 {IWL_PCI_DEVICE(0x0083, 0x1205, iwl1000_bgn_cfg)},
4461 {IWL_PCI_DEVICE(0x0083, 0x1305, iwl1000_bgn_cfg)},
4462 {IWL_PCI_DEVICE(0x0083, 0x1225, iwl1000_bgn_cfg)},
4463 {IWL_PCI_DEVICE(0x0083, 0x1325, iwl1000_bgn_cfg)},
4464 {IWL_PCI_DEVICE(0x0084, 0x1215, iwl1000_bgn_cfg)},
4465 {IWL_PCI_DEVICE(0x0084, 0x1315, iwl1000_bgn_cfg)},
4466 {IWL_PCI_DEVICE(0x0083, 0x1206, iwl1000_bg_cfg)},
4467 {IWL_PCI_DEVICE(0x0083, 0x1306, iwl1000_bg_cfg)},
4468 {IWL_PCI_DEVICE(0x0083, 0x1226, iwl1000_bg_cfg)},
4469 {IWL_PCI_DEVICE(0x0083, 0x1326, iwl1000_bg_cfg)},
4470 {IWL_PCI_DEVICE(0x0084, 0x1216, iwl1000_bg_cfg)},
4471 {IWL_PCI_DEVICE(0x0084, 0x1316, iwl1000_bg_cfg)},
4472
4473 /* 100 Series WiFi */
4474 {IWL_PCI_DEVICE(0x08AE, 0x1005, iwl100_bgn_cfg)},
4475 {IWL_PCI_DEVICE(0x08AE, 0x1007, iwl100_bg_cfg)},
4476 {IWL_PCI_DEVICE(0x08AF, 0x1015, iwl100_bgn_cfg)},
4477 {IWL_PCI_DEVICE(0x08AF, 0x1017, iwl100_bg_cfg)},
4478 {IWL_PCI_DEVICE(0x08AE, 0x1025, iwl100_bgn_cfg)},
4479 {IWL_PCI_DEVICE(0x08AE, 0x1027, iwl100_bg_cfg)},
4480
4481 /* 130 Series WiFi */
4482 {IWL_PCI_DEVICE(0x0896, 0x5005, iwl130_bgn_cfg)},
4483 {IWL_PCI_DEVICE(0x0896, 0x5007, iwl130_bg_cfg)},
4484 {IWL_PCI_DEVICE(0x0897, 0x5015, iwl130_bgn_cfg)},
4485 {IWL_PCI_DEVICE(0x0897, 0x5017, iwl130_bg_cfg)},
4486 {IWL_PCI_DEVICE(0x0896, 0x5025, iwl130_bgn_cfg)},
4487 {IWL_PCI_DEVICE(0x0896, 0x5027, iwl130_bg_cfg)},
4488
4489 #endif /* CONFIG_IWL5000 */
4490
4491 {0}
4492 };
4493 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4494
4495 static struct pci_driver iwl_driver = {
4496 .name = DRV_NAME,
4497 .id_table = iwl_hw_card_ids,
4498 .probe = iwl_pci_probe,
4499 .remove = __devexit_p(iwl_pci_remove),
4500 .driver.pm = IWL_PM_OPS,
4501 };
4502
4503 static int __init iwl_init(void)
4504 {
4505
4506 int ret;
4507 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
4508 pr_info(DRV_COPYRIGHT "\n");
4509
4510 ret = iwlagn_rate_control_register();
4511 if (ret) {
4512 pr_err("Unable to register rate control algorithm: %d\n", ret);
4513 return ret;
4514 }
4515
4516 ret = pci_register_driver(&iwl_driver);
4517 if (ret) {
4518 pr_err("Unable to initialize PCI module\n");
4519 goto error_register;
4520 }
4521
4522 return ret;
4523
4524 error_register:
4525 iwlagn_rate_control_unregister();
4526 return ret;
4527 }
4528
4529 static void __exit iwl_exit(void)
4530 {
4531 pci_unregister_driver(&iwl_driver);
4532 iwlagn_rate_control_unregister();
4533 }
4534
4535 module_exit(iwl_exit);
4536 module_init(iwl_init);
4537
4538 #ifdef CONFIG_IWLWIFI_DEBUG
4539 module_param_named(debug50, iwl_debug_level, uint, S_IRUGO);
4540 MODULE_PARM_DESC(debug50, "50XX debug output mask (deprecated)");
4541 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
4542 MODULE_PARM_DESC(debug, "debug output mask");
4543 #endif
4544
4545 module_param_named(swcrypto50, iwlagn_mod_params.sw_crypto, bool, S_IRUGO);
4546 MODULE_PARM_DESC(swcrypto50,
4547 "using crypto in software (default 0 [hardware]) (deprecated)");
4548 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
4549 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
4550 module_param_named(queues_num50,
4551 iwlagn_mod_params.num_of_queues, int, S_IRUGO);
4552 MODULE_PARM_DESC(queues_num50,
4553 "number of hw queues in 50xx series (deprecated)");
4554 module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
4555 MODULE_PARM_DESC(queues_num, "number of hw queues.");
4556 module_param_named(11n_disable50, iwlagn_mod_params.disable_11n, int, S_IRUGO);
4557 MODULE_PARM_DESC(11n_disable50, "disable 50XX 11n functionality (deprecated)");
4558 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, int, S_IRUGO);
4559 MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
4560 module_param_named(amsdu_size_8K50, iwlagn_mod_params.amsdu_size_8K,
4561 int, S_IRUGO);
4562 MODULE_PARM_DESC(amsdu_size_8K50,
4563 "enable 8K amsdu size in 50XX series (deprecated)");
4564 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
4565 int, S_IRUGO);
4566 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
4567 module_param_named(fw_restart50, iwlagn_mod_params.restart_fw, int, S_IRUGO);
4568 MODULE_PARM_DESC(fw_restart50,
4569 "restart firmware in case of error (deprecated)");
4570 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
4571 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
4572 module_param_named(
4573 disable_hw_scan, iwlagn_mod_params.disable_hw_scan, int, S_IRUGO);
4574 MODULE_PARM_DESC(disable_hw_scan,
4575 "disable hardware scanning (default 0) (deprecated)");
4576
4577 module_param_named(ucode_alternative, iwlagn_wanted_ucode_alternative, int,
4578 S_IRUGO);
4579 MODULE_PARM_DESC(ucode_alternative,
4580 "specify ucode alternative to use from ucode file");
4581
4582 module_param_named(antenna_coupling, iwlagn_ant_coupling, int, S_IRUGO);
4583 MODULE_PARM_DESC(antenna_coupling,
4584 "specify antenna coupling in dB (defualt: 0 dB)");
4585
4586 module_param_named(bt_ch_inhibition, iwlagn_bt_ch_announce, bool, S_IRUGO);
4587 MODULE_PARM_DESC(bt_ch_inhibition,
4588 "Disable BT channel inhibition (default: enable)");
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