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Merge branch 'for-2.6.37' of git://linux-nfs.org/~bfields/linux
[GitHub/mt8127/android_kernel_alcatel_ttab.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 /**
94 * iwlagn_commit_rxon - commit staging_rxon to hardware
95 *
96 * The RXON command in staging_rxon is committed to the hardware and
97 * the active_rxon structure is updated with the new data. This
98 * function correctly transitions out of the RXON_ASSOC_MSK state if
99 * a HW tune is required based on the RXON structure changes.
100 */
101 int iwlagn_commit_rxon(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
102 {
103 /* cast away the const for active_rxon in this function */
104 struct iwl_rxon_cmd *active_rxon = (void *)&ctx->active;
105 int ret;
106 bool new_assoc =
107 !!(ctx->staging.filter_flags & RXON_FILTER_ASSOC_MSK);
108 bool old_assoc = !!(ctx->active.filter_flags & RXON_FILTER_ASSOC_MSK);
109
110 if (!iwl_is_alive(priv))
111 return -EBUSY;
112
113 if (!ctx->is_active)
114 return 0;
115
116 /* always get timestamp with Rx frame */
117 ctx->staging.flags |= RXON_FLG_TSF2HOST_MSK;
118
119 ret = iwl_check_rxon_cmd(priv, ctx);
120 if (ret) {
121 IWL_ERR(priv, "Invalid RXON configuration. Not committing.\n");
122 return -EINVAL;
123 }
124
125 /*
126 * receive commit_rxon request
127 * abort any previous channel switch if still in process
128 */
129 if (priv->switch_rxon.switch_in_progress &&
130 (priv->switch_rxon.channel != ctx->staging.channel)) {
131 IWL_DEBUG_11H(priv, "abort channel switch on %d\n",
132 le16_to_cpu(priv->switch_rxon.channel));
133 iwl_chswitch_done(priv, false);
134 }
135
136 /* If we don't need to send a full RXON, we can use
137 * iwl_rxon_assoc_cmd which is used to reconfigure filter
138 * and other flags for the current radio configuration. */
139 if (!iwl_full_rxon_required(priv, ctx)) {
140 ret = iwl_send_rxon_assoc(priv, ctx);
141 if (ret) {
142 IWL_ERR(priv, "Error setting RXON_ASSOC (%d)\n", ret);
143 return ret;
144 }
145
146 memcpy(active_rxon, &ctx->staging, sizeof(*active_rxon));
147 iwl_print_rx_config_cmd(priv, ctx);
148 return 0;
149 }
150
151 /* If we are currently associated and the new config requires
152 * an RXON_ASSOC and the new config wants the associated mask enabled,
153 * we must clear the associated from the active configuration
154 * before we apply the new config */
155 if (iwl_is_associated_ctx(ctx) && new_assoc) {
156 IWL_DEBUG_INFO(priv, "Toggling associated bit on current RXON\n");
157 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
158
159 ret = iwl_send_cmd_pdu(priv, ctx->rxon_cmd,
160 sizeof(struct iwl_rxon_cmd),
161 active_rxon);
162
163 /* If the mask clearing failed then we set
164 * active_rxon back to what it was previously */
165 if (ret) {
166 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
167 IWL_ERR(priv, "Error clearing ASSOC_MSK (%d)\n", ret);
168 return ret;
169 }
170 iwl_clear_ucode_stations(priv, ctx);
171 iwl_restore_stations(priv, ctx);
172 ret = iwl_restore_default_wep_keys(priv, ctx);
173 if (ret) {
174 IWL_ERR(priv, "Failed to restore WEP keys (%d)\n", ret);
175 return ret;
176 }
177 }
178
179 IWL_DEBUG_INFO(priv, "Sending RXON\n"
180 "* with%s RXON_FILTER_ASSOC_MSK\n"
181 "* channel = %d\n"
182 "* bssid = %pM\n",
183 (new_assoc ? "" : "out"),
184 le16_to_cpu(ctx->staging.channel),
185 ctx->staging.bssid_addr);
186
187 iwl_set_rxon_hwcrypto(priv, ctx, !priv->cfg->mod_params->sw_crypto);
188
189 if (!old_assoc) {
190 /*
191 * First of all, before setting associated, we need to
192 * send RXON timing so the device knows about the DTIM
193 * period and other timing values
194 */
195 ret = iwl_send_rxon_timing(priv, ctx);
196 if (ret) {
197 IWL_ERR(priv, "Error setting RXON timing!\n");
198 return ret;
199 }
200 }
201
202 if (priv->cfg->ops->hcmd->set_pan_params) {
203 ret = priv->cfg->ops->hcmd->set_pan_params(priv);
204 if (ret)
205 return ret;
206 }
207
208 /* Apply the new configuration
209 * RXON unassoc clears the station table in uCode so restoration of
210 * stations is needed after it (the RXON command) completes
211 */
212 if (!new_assoc) {
213 ret = iwl_send_cmd_pdu(priv, ctx->rxon_cmd,
214 sizeof(struct iwl_rxon_cmd), &ctx->staging);
215 if (ret) {
216 IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
217 return ret;
218 }
219 IWL_DEBUG_INFO(priv, "Return from !new_assoc RXON.\n");
220 memcpy(active_rxon, &ctx->staging, sizeof(*active_rxon));
221 iwl_clear_ucode_stations(priv, ctx);
222 iwl_restore_stations(priv, ctx);
223 ret = iwl_restore_default_wep_keys(priv, ctx);
224 if (ret) {
225 IWL_ERR(priv, "Failed to restore WEP keys (%d)\n", ret);
226 return ret;
227 }
228 }
229 if (new_assoc) {
230 priv->start_calib = 0;
231 /* Apply the new configuration
232 * RXON assoc doesn't clear the station table in uCode,
233 */
234 ret = iwl_send_cmd_pdu(priv, ctx->rxon_cmd,
235 sizeof(struct iwl_rxon_cmd), &ctx->staging);
236 if (ret) {
237 IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
238 return ret;
239 }
240 memcpy(active_rxon, &ctx->staging, sizeof(*active_rxon));
241 }
242 iwl_print_rx_config_cmd(priv, ctx);
243
244 iwl_init_sensitivity(priv);
245
246 /* If we issue a new RXON command which required a tune then we must
247 * send a new TXPOWER command or we won't be able to Tx any frames */
248 ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
249 if (ret) {
250 IWL_ERR(priv, "Error sending TX power (%d)\n", ret);
251 return ret;
252 }
253
254 return 0;
255 }
256
257 void iwl_update_chain_flags(struct iwl_priv *priv)
258 {
259 struct iwl_rxon_context *ctx;
260
261 if (priv->cfg->ops->hcmd->set_rxon_chain) {
262 for_each_context(priv, ctx) {
263 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
264 iwlcore_commit_rxon(priv, ctx);
265 }
266 }
267 }
268
269 static void iwl_clear_free_frames(struct iwl_priv *priv)
270 {
271 struct list_head *element;
272
273 IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
274 priv->frames_count);
275
276 while (!list_empty(&priv->free_frames)) {
277 element = priv->free_frames.next;
278 list_del(element);
279 kfree(list_entry(element, struct iwl_frame, list));
280 priv->frames_count--;
281 }
282
283 if (priv->frames_count) {
284 IWL_WARN(priv, "%d frames still in use. Did we lose one?\n",
285 priv->frames_count);
286 priv->frames_count = 0;
287 }
288 }
289
290 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
291 {
292 struct iwl_frame *frame;
293 struct list_head *element;
294 if (list_empty(&priv->free_frames)) {
295 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
296 if (!frame) {
297 IWL_ERR(priv, "Could not allocate frame!\n");
298 return NULL;
299 }
300
301 priv->frames_count++;
302 return frame;
303 }
304
305 element = priv->free_frames.next;
306 list_del(element);
307 return list_entry(element, struct iwl_frame, list);
308 }
309
310 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
311 {
312 memset(frame, 0, sizeof(*frame));
313 list_add(&frame->list, &priv->free_frames);
314 }
315
316 static u32 iwl_fill_beacon_frame(struct iwl_priv *priv,
317 struct ieee80211_hdr *hdr,
318 int left)
319 {
320 lockdep_assert_held(&priv->mutex);
321
322 if (!priv->beacon_skb)
323 return 0;
324
325 if (priv->beacon_skb->len > left)
326 return 0;
327
328 memcpy(hdr, priv->beacon_skb->data, priv->beacon_skb->len);
329
330 return priv->beacon_skb->len;
331 }
332
333 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
334 static void iwl_set_beacon_tim(struct iwl_priv *priv,
335 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
336 u8 *beacon, u32 frame_size)
337 {
338 u16 tim_idx;
339 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
340
341 /*
342 * The index is relative to frame start but we start looking at the
343 * variable-length part of the beacon.
344 */
345 tim_idx = mgmt->u.beacon.variable - beacon;
346
347 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
348 while ((tim_idx < (frame_size - 2)) &&
349 (beacon[tim_idx] != WLAN_EID_TIM))
350 tim_idx += beacon[tim_idx+1] + 2;
351
352 /* If TIM field was found, set variables */
353 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
354 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
355 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
356 } else
357 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
358 }
359
360 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv,
361 struct iwl_frame *frame)
362 {
363 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
364 u32 frame_size;
365 u32 rate_flags;
366 u32 rate;
367 /*
368 * We have to set up the TX command, the TX Beacon command, and the
369 * beacon contents.
370 */
371
372 lockdep_assert_held(&priv->mutex);
373
374 if (!priv->beacon_ctx) {
375 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
376 return 0;
377 }
378
379 /* Initialize memory */
380 tx_beacon_cmd = &frame->u.beacon;
381 memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
382
383 /* Set up TX beacon contents */
384 frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
385 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
386 if (WARN_ON_ONCE(frame_size > MAX_MPDU_SIZE))
387 return 0;
388 if (!frame_size)
389 return 0;
390
391 /* Set up TX command fields */
392 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
393 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
394 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
395 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
396 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
397
398 /* Set up TX beacon command fields */
399 iwl_set_beacon_tim(priv, tx_beacon_cmd, (u8 *)tx_beacon_cmd->frame,
400 frame_size);
401
402 /* Set up packet rate and flags */
403 rate = iwl_rate_get_lowest_plcp(priv, priv->beacon_ctx);
404 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
405 priv->hw_params.valid_tx_ant);
406 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
407 if ((rate >= IWL_FIRST_CCK_RATE) && (rate <= IWL_LAST_CCK_RATE))
408 rate_flags |= RATE_MCS_CCK_MSK;
409 tx_beacon_cmd->tx.rate_n_flags = iwl_hw_set_rate_n_flags(rate,
410 rate_flags);
411
412 return sizeof(*tx_beacon_cmd) + frame_size;
413 }
414 static int iwl_send_beacon_cmd(struct iwl_priv *priv)
415 {
416 struct iwl_frame *frame;
417 unsigned int frame_size;
418 int rc;
419
420 frame = iwl_get_free_frame(priv);
421 if (!frame) {
422 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
423 "command.\n");
424 return -ENOMEM;
425 }
426
427 frame_size = iwl_hw_get_beacon_cmd(priv, frame);
428 if (!frame_size) {
429 IWL_ERR(priv, "Error configuring the beacon command\n");
430 iwl_free_frame(priv, frame);
431 return -EINVAL;
432 }
433
434 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
435 &frame->u.cmd[0]);
436
437 iwl_free_frame(priv, frame);
438
439 return rc;
440 }
441
442 static inline dma_addr_t iwl_tfd_tb_get_addr(struct iwl_tfd *tfd, u8 idx)
443 {
444 struct iwl_tfd_tb *tb = &tfd->tbs[idx];
445
446 dma_addr_t addr = get_unaligned_le32(&tb->lo);
447 if (sizeof(dma_addr_t) > sizeof(u32))
448 addr |=
449 ((dma_addr_t)(le16_to_cpu(tb->hi_n_len) & 0xF) << 16) << 16;
450
451 return addr;
452 }
453
454 static inline u16 iwl_tfd_tb_get_len(struct iwl_tfd *tfd, u8 idx)
455 {
456 struct iwl_tfd_tb *tb = &tfd->tbs[idx];
457
458 return le16_to_cpu(tb->hi_n_len) >> 4;
459 }
460
461 static inline void iwl_tfd_set_tb(struct iwl_tfd *tfd, u8 idx,
462 dma_addr_t addr, u16 len)
463 {
464 struct iwl_tfd_tb *tb = &tfd->tbs[idx];
465 u16 hi_n_len = len << 4;
466
467 put_unaligned_le32(addr, &tb->lo);
468 if (sizeof(dma_addr_t) > sizeof(u32))
469 hi_n_len |= ((addr >> 16) >> 16) & 0xF;
470
471 tb->hi_n_len = cpu_to_le16(hi_n_len);
472
473 tfd->num_tbs = idx + 1;
474 }
475
476 static inline u8 iwl_tfd_get_num_tbs(struct iwl_tfd *tfd)
477 {
478 return tfd->num_tbs & 0x1f;
479 }
480
481 /**
482 * iwl_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr]
483 * @priv - driver private data
484 * @txq - tx queue
485 *
486 * Does NOT advance any TFD circular buffer read/write indexes
487 * Does NOT free the TFD itself (which is within circular buffer)
488 */
489 void iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
490 {
491 struct iwl_tfd *tfd_tmp = (struct iwl_tfd *)txq->tfds;
492 struct iwl_tfd *tfd;
493 struct pci_dev *dev = priv->pci_dev;
494 int index = txq->q.read_ptr;
495 int i;
496 int num_tbs;
497
498 tfd = &tfd_tmp[index];
499
500 /* Sanity check on number of chunks */
501 num_tbs = iwl_tfd_get_num_tbs(tfd);
502
503 if (num_tbs >= IWL_NUM_OF_TBS) {
504 IWL_ERR(priv, "Too many chunks: %i\n", num_tbs);
505 /* @todo issue fatal error, it is quite serious situation */
506 return;
507 }
508
509 /* Unmap tx_cmd */
510 if (num_tbs)
511 pci_unmap_single(dev,
512 dma_unmap_addr(&txq->meta[index], mapping),
513 dma_unmap_len(&txq->meta[index], len),
514 PCI_DMA_BIDIRECTIONAL);
515
516 /* Unmap chunks, if any. */
517 for (i = 1; i < num_tbs; i++)
518 pci_unmap_single(dev, iwl_tfd_tb_get_addr(tfd, i),
519 iwl_tfd_tb_get_len(tfd, i), PCI_DMA_TODEVICE);
520
521 /* free SKB */
522 if (txq->txb) {
523 struct sk_buff *skb;
524
525 skb = txq->txb[txq->q.read_ptr].skb;
526
527 /* can be called from irqs-disabled context */
528 if (skb) {
529 dev_kfree_skb_any(skb);
530 txq->txb[txq->q.read_ptr].skb = NULL;
531 }
532 }
533 }
534
535 int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
536 struct iwl_tx_queue *txq,
537 dma_addr_t addr, u16 len,
538 u8 reset, u8 pad)
539 {
540 struct iwl_queue *q;
541 struct iwl_tfd *tfd, *tfd_tmp;
542 u32 num_tbs;
543
544 q = &txq->q;
545 tfd_tmp = (struct iwl_tfd *)txq->tfds;
546 tfd = &tfd_tmp[q->write_ptr];
547
548 if (reset)
549 memset(tfd, 0, sizeof(*tfd));
550
551 num_tbs = iwl_tfd_get_num_tbs(tfd);
552
553 /* Each TFD can point to a maximum 20 Tx buffers */
554 if (num_tbs >= IWL_NUM_OF_TBS) {
555 IWL_ERR(priv, "Error can not send more than %d chunks\n",
556 IWL_NUM_OF_TBS);
557 return -EINVAL;
558 }
559
560 BUG_ON(addr & ~DMA_BIT_MASK(36));
561 if (unlikely(addr & ~IWL_TX_DMA_MASK))
562 IWL_ERR(priv, "Unaligned address = %llx\n",
563 (unsigned long long)addr);
564
565 iwl_tfd_set_tb(tfd, num_tbs, addr, len);
566
567 return 0;
568 }
569
570 /*
571 * Tell nic where to find circular buffer of Tx Frame Descriptors for
572 * given Tx queue, and enable the DMA channel used for that queue.
573 *
574 * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA
575 * channels supported in hardware.
576 */
577 int iwl_hw_tx_queue_init(struct iwl_priv *priv,
578 struct iwl_tx_queue *txq)
579 {
580 int txq_id = txq->q.id;
581
582 /* Circular buffer (TFD queue in DRAM) physical base address */
583 iwl_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id),
584 txq->q.dma_addr >> 8);
585
586 return 0;
587 }
588
589 /******************************************************************************
590 *
591 * Generic RX handler implementations
592 *
593 ******************************************************************************/
594 static void iwl_rx_reply_alive(struct iwl_priv *priv,
595 struct iwl_rx_mem_buffer *rxb)
596 {
597 struct iwl_rx_packet *pkt = rxb_addr(rxb);
598 struct iwl_alive_resp *palive;
599 struct delayed_work *pwork;
600
601 palive = &pkt->u.alive_frame;
602
603 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
604 "0x%01X 0x%01X\n",
605 palive->is_valid, palive->ver_type,
606 palive->ver_subtype);
607
608 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
609 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
610 memcpy(&priv->card_alive_init,
611 &pkt->u.alive_frame,
612 sizeof(struct iwl_init_alive_resp));
613 pwork = &priv->init_alive_start;
614 } else {
615 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
616 memcpy(&priv->card_alive, &pkt->u.alive_frame,
617 sizeof(struct iwl_alive_resp));
618 pwork = &priv->alive_start;
619 }
620
621 /* We delay the ALIVE response by 5ms to
622 * give the HW RF Kill time to activate... */
623 if (palive->is_valid == UCODE_VALID_OK)
624 queue_delayed_work(priv->workqueue, pwork,
625 msecs_to_jiffies(5));
626 else
627 IWL_WARN(priv, "uCode did not respond OK.\n");
628 }
629
630 static void iwl_bg_beacon_update(struct work_struct *work)
631 {
632 struct iwl_priv *priv =
633 container_of(work, struct iwl_priv, beacon_update);
634 struct sk_buff *beacon;
635
636 mutex_lock(&priv->mutex);
637 if (!priv->beacon_ctx) {
638 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
639 goto out;
640 }
641
642 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
643 /*
644 * The ucode will send beacon notifications even in
645 * IBSS mode, but we don't want to process them. But
646 * we need to defer the type check to here due to
647 * requiring locking around the beacon_ctx access.
648 */
649 goto out;
650 }
651
652 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
653 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
654 if (!beacon) {
655 IWL_ERR(priv, "update beacon failed -- keeping old\n");
656 goto out;
657 }
658
659 /* new beacon skb is allocated every time; dispose previous.*/
660 dev_kfree_skb(priv->beacon_skb);
661
662 priv->beacon_skb = beacon;
663
664 iwl_send_beacon_cmd(priv);
665 out:
666 mutex_unlock(&priv->mutex);
667 }
668
669 static void iwl_bg_bt_runtime_config(struct work_struct *work)
670 {
671 struct iwl_priv *priv =
672 container_of(work, struct iwl_priv, bt_runtime_config);
673
674 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
675 return;
676
677 /* dont send host command if rf-kill is on */
678 if (!iwl_is_ready_rf(priv))
679 return;
680 priv->cfg->ops->hcmd->send_bt_config(priv);
681 }
682
683 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
684 {
685 struct iwl_priv *priv =
686 container_of(work, struct iwl_priv, bt_full_concurrency);
687 struct iwl_rxon_context *ctx;
688
689 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
690 return;
691
692 /* dont send host command if rf-kill is on */
693 if (!iwl_is_ready_rf(priv))
694 return;
695
696 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
697 priv->bt_full_concurrent ?
698 "full concurrency" : "3-wire");
699
700 /*
701 * LQ & RXON updated cmds must be sent before BT Config cmd
702 * to avoid 3-wire collisions
703 */
704 mutex_lock(&priv->mutex);
705 for_each_context(priv, ctx) {
706 if (priv->cfg->ops->hcmd->set_rxon_chain)
707 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
708 iwlcore_commit_rxon(priv, ctx);
709 }
710 mutex_unlock(&priv->mutex);
711
712 priv->cfg->ops->hcmd->send_bt_config(priv);
713 }
714
715 /**
716 * iwl_bg_statistics_periodic - Timer callback to queue statistics
717 *
718 * This callback is provided in order to send a statistics request.
719 *
720 * This timer function is continually reset to execute within
721 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
722 * was received. We need to ensure we receive the statistics in order
723 * to update the temperature used for calibrating the TXPOWER.
724 */
725 static void iwl_bg_statistics_periodic(unsigned long data)
726 {
727 struct iwl_priv *priv = (struct iwl_priv *)data;
728
729 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
730 return;
731
732 /* dont send host command if rf-kill is on */
733 if (!iwl_is_ready_rf(priv))
734 return;
735
736 iwl_send_statistics_request(priv, CMD_ASYNC, false);
737 }
738
739
740 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
741 u32 start_idx, u32 num_events,
742 u32 mode)
743 {
744 u32 i;
745 u32 ptr; /* SRAM byte address of log data */
746 u32 ev, time, data; /* event log data */
747 unsigned long reg_flags;
748
749 if (mode == 0)
750 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
751 else
752 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
753
754 /* Make sure device is powered up for SRAM reads */
755 spin_lock_irqsave(&priv->reg_lock, reg_flags);
756 if (iwl_grab_nic_access(priv)) {
757 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
758 return;
759 }
760
761 /* Set starting address; reads will auto-increment */
762 _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
763 rmb();
764
765 /*
766 * "time" is actually "data" for mode 0 (no timestamp).
767 * place event id # at far right for easier visual parsing.
768 */
769 for (i = 0; i < num_events; i++) {
770 ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
771 time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
772 if (mode == 0) {
773 trace_iwlwifi_dev_ucode_cont_event(priv,
774 0, time, ev);
775 } else {
776 data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
777 trace_iwlwifi_dev_ucode_cont_event(priv,
778 time, data, ev);
779 }
780 }
781 /* Allow device to power down */
782 iwl_release_nic_access(priv);
783 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
784 }
785
786 static void iwl_continuous_event_trace(struct iwl_priv *priv)
787 {
788 u32 capacity; /* event log capacity in # entries */
789 u32 base; /* SRAM byte address of event log header */
790 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
791 u32 num_wraps; /* # times uCode wrapped to top of log */
792 u32 next_entry; /* index of next entry to be written by uCode */
793
794 if (priv->ucode_type == UCODE_INIT)
795 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
796 else
797 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
798 if (priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
799 capacity = iwl_read_targ_mem(priv, base);
800 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
801 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
802 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
803 } else
804 return;
805
806 if (num_wraps == priv->event_log.num_wraps) {
807 iwl_print_cont_event_trace(priv,
808 base, priv->event_log.next_entry,
809 next_entry - priv->event_log.next_entry,
810 mode);
811 priv->event_log.non_wraps_count++;
812 } else {
813 if ((num_wraps - priv->event_log.num_wraps) > 1)
814 priv->event_log.wraps_more_count++;
815 else
816 priv->event_log.wraps_once_count++;
817 trace_iwlwifi_dev_ucode_wrap_event(priv,
818 num_wraps - priv->event_log.num_wraps,
819 next_entry, priv->event_log.next_entry);
820 if (next_entry < priv->event_log.next_entry) {
821 iwl_print_cont_event_trace(priv, base,
822 priv->event_log.next_entry,
823 capacity - priv->event_log.next_entry,
824 mode);
825
826 iwl_print_cont_event_trace(priv, base, 0,
827 next_entry, mode);
828 } else {
829 iwl_print_cont_event_trace(priv, base,
830 next_entry, capacity - next_entry,
831 mode);
832
833 iwl_print_cont_event_trace(priv, base, 0,
834 next_entry, mode);
835 }
836 }
837 priv->event_log.num_wraps = num_wraps;
838 priv->event_log.next_entry = next_entry;
839 }
840
841 /**
842 * iwl_bg_ucode_trace - Timer callback to log ucode event
843 *
844 * The timer is continually set to execute every
845 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
846 * this function is to perform continuous uCode event logging operation
847 * if enabled
848 */
849 static void iwl_bg_ucode_trace(unsigned long data)
850 {
851 struct iwl_priv *priv = (struct iwl_priv *)data;
852
853 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
854 return;
855
856 if (priv->event_log.ucode_trace) {
857 iwl_continuous_event_trace(priv);
858 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
859 mod_timer(&priv->ucode_trace,
860 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
861 }
862 }
863
864 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
865 struct iwl_rx_mem_buffer *rxb)
866 {
867 struct iwl_rx_packet *pkt = rxb_addr(rxb);
868 struct iwl4965_beacon_notif *beacon =
869 (struct iwl4965_beacon_notif *)pkt->u.raw;
870 #ifdef CONFIG_IWLWIFI_DEBUG
871 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
872
873 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
874 "tsf %d %d rate %d\n",
875 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
876 beacon->beacon_notify_hdr.failure_frame,
877 le32_to_cpu(beacon->ibss_mgr_status),
878 le32_to_cpu(beacon->high_tsf),
879 le32_to_cpu(beacon->low_tsf), rate);
880 #endif
881
882 priv->ibss_manager = le32_to_cpu(beacon->ibss_mgr_status);
883
884 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
885 queue_work(priv->workqueue, &priv->beacon_update);
886 }
887
888 /* Handle notification from uCode that card's power state is changing
889 * due to software, hardware, or critical temperature RFKILL */
890 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
891 struct iwl_rx_mem_buffer *rxb)
892 {
893 struct iwl_rx_packet *pkt = rxb_addr(rxb);
894 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
895 unsigned long status = priv->status;
896
897 IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s CT:%s\n",
898 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
899 (flags & SW_CARD_DISABLED) ? "Kill" : "On",
900 (flags & CT_CARD_DISABLED) ?
901 "Reached" : "Not reached");
902
903 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
904 CT_CARD_DISABLED)) {
905
906 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
907 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
908
909 iwl_write_direct32(priv, HBUS_TARG_MBX_C,
910 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
911
912 if (!(flags & RXON_CARD_DISABLED)) {
913 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
914 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
915 iwl_write_direct32(priv, HBUS_TARG_MBX_C,
916 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
917 }
918 if (flags & CT_CARD_DISABLED)
919 iwl_tt_enter_ct_kill(priv);
920 }
921 if (!(flags & CT_CARD_DISABLED))
922 iwl_tt_exit_ct_kill(priv);
923
924 if (flags & HW_CARD_DISABLED)
925 set_bit(STATUS_RF_KILL_HW, &priv->status);
926 else
927 clear_bit(STATUS_RF_KILL_HW, &priv->status);
928
929
930 if (!(flags & RXON_CARD_DISABLED))
931 iwl_scan_cancel(priv);
932
933 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
934 test_bit(STATUS_RF_KILL_HW, &priv->status)))
935 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
936 test_bit(STATUS_RF_KILL_HW, &priv->status));
937 else
938 wake_up_interruptible(&priv->wait_command_queue);
939 }
940
941 static void iwl_bg_tx_flush(struct work_struct *work)
942 {
943 struct iwl_priv *priv =
944 container_of(work, struct iwl_priv, tx_flush);
945
946 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
947 return;
948
949 /* do nothing if rf-kill is on */
950 if (!iwl_is_ready_rf(priv))
951 return;
952
953 if (priv->cfg->ops->lib->txfifo_flush) {
954 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
955 iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
956 }
957 }
958
959 /**
960 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
961 *
962 * Setup the RX handlers for each of the reply types sent from the uCode
963 * to the host.
964 *
965 * This function chains into the hardware specific files for them to setup
966 * any hardware specific handlers as well.
967 */
968 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
969 {
970 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
971 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
972 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
973 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
974 iwl_rx_spectrum_measure_notif;
975 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
976 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
977 iwl_rx_pm_debug_statistics_notif;
978 priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
979
980 /*
981 * The same handler is used for both the REPLY to a discrete
982 * statistics request from the host as well as for the periodic
983 * statistics notifications (after received beacons) from the uCode.
984 */
985 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_reply_statistics;
986 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
987
988 iwl_setup_rx_scan_handlers(priv);
989
990 /* status change handler */
991 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
992
993 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
994 iwl_rx_missed_beacon_notif;
995 /* Rx handlers */
996 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwlagn_rx_reply_rx_phy;
997 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwlagn_rx_reply_rx;
998 /* block ack */
999 priv->rx_handlers[REPLY_COMPRESSED_BA] = iwlagn_rx_reply_compressed_ba;
1000 /* Set up hardware specific Rx handlers */
1001 priv->cfg->ops->lib->rx_handler_setup(priv);
1002 }
1003
1004 /**
1005 * iwl_rx_handle - Main entry function for receiving responses from uCode
1006 *
1007 * Uses the priv->rx_handlers callback function array to invoke
1008 * the appropriate handlers, including command responses,
1009 * frame-received notifications, and other notifications.
1010 */
1011 void iwl_rx_handle(struct iwl_priv *priv)
1012 {
1013 struct iwl_rx_mem_buffer *rxb;
1014 struct iwl_rx_packet *pkt;
1015 struct iwl_rx_queue *rxq = &priv->rxq;
1016 u32 r, i;
1017 int reclaim;
1018 unsigned long flags;
1019 u8 fill_rx = 0;
1020 u32 count = 8;
1021 int total_empty;
1022
1023 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1024 * buffer that the driver may process (last buffer filled by ucode). */
1025 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
1026 i = rxq->read;
1027
1028 /* Rx interrupt, but nothing sent from uCode */
1029 if (i == r)
1030 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
1031
1032 /* calculate total frames need to be restock after handling RX */
1033 total_empty = r - rxq->write_actual;
1034 if (total_empty < 0)
1035 total_empty += RX_QUEUE_SIZE;
1036
1037 if (total_empty > (RX_QUEUE_SIZE / 2))
1038 fill_rx = 1;
1039
1040 while (i != r) {
1041 int len;
1042
1043 rxb = rxq->queue[i];
1044
1045 /* If an RXB doesn't have a Rx queue slot associated with it,
1046 * then a bug has been introduced in the queue refilling
1047 * routines -- catch it here */
1048 BUG_ON(rxb == NULL);
1049
1050 rxq->queue[i] = NULL;
1051
1052 pci_unmap_page(priv->pci_dev, rxb->page_dma,
1053 PAGE_SIZE << priv->hw_params.rx_page_order,
1054 PCI_DMA_FROMDEVICE);
1055 pkt = rxb_addr(rxb);
1056
1057 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
1058 len += sizeof(u32); /* account for status word */
1059 trace_iwlwifi_dev_rx(priv, pkt, len);
1060
1061 /* Reclaim a command buffer only if this packet is a response
1062 * to a (driver-originated) command.
1063 * If the packet (e.g. Rx frame) originated from uCode,
1064 * there is no command buffer to reclaim.
1065 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1066 * but apparently a few don't get set; catch them here. */
1067 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1068 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1069 (pkt->hdr.cmd != REPLY_RX) &&
1070 (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
1071 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1072 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1073 (pkt->hdr.cmd != REPLY_TX);
1074
1075 /* Based on type of command response or notification,
1076 * handle those that need handling via function in
1077 * rx_handlers table. See iwl_setup_rx_handlers() */
1078 if (priv->rx_handlers[pkt->hdr.cmd]) {
1079 IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r,
1080 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1081 priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
1082 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1083 } else {
1084 /* No handling needed */
1085 IWL_DEBUG_RX(priv,
1086 "r %d i %d No handler needed for %s, 0x%02x\n",
1087 r, i, get_cmd_string(pkt->hdr.cmd),
1088 pkt->hdr.cmd);
1089 }
1090
1091 /*
1092 * XXX: After here, we should always check rxb->page
1093 * against NULL before touching it or its virtual
1094 * memory (pkt). Because some rx_handler might have
1095 * already taken or freed the pages.
1096 */
1097
1098 if (reclaim) {
1099 /* Invoke any callbacks, transfer the buffer to caller,
1100 * and fire off the (possibly) blocking iwl_send_cmd()
1101 * as we reclaim the driver command queue */
1102 if (rxb->page)
1103 iwl_tx_cmd_complete(priv, rxb);
1104 else
1105 IWL_WARN(priv, "Claim null rxb?\n");
1106 }
1107
1108 /* Reuse the page if possible. For notification packets and
1109 * SKBs that fail to Rx correctly, add them back into the
1110 * rx_free list for reuse later. */
1111 spin_lock_irqsave(&rxq->lock, flags);
1112 if (rxb->page != NULL) {
1113 rxb->page_dma = pci_map_page(priv->pci_dev, rxb->page,
1114 0, PAGE_SIZE << priv->hw_params.rx_page_order,
1115 PCI_DMA_FROMDEVICE);
1116 list_add_tail(&rxb->list, &rxq->rx_free);
1117 rxq->free_count++;
1118 } else
1119 list_add_tail(&rxb->list, &rxq->rx_used);
1120
1121 spin_unlock_irqrestore(&rxq->lock, flags);
1122
1123 i = (i + 1) & RX_QUEUE_MASK;
1124 /* If there are a lot of unused frames,
1125 * restock the Rx queue so ucode wont assert. */
1126 if (fill_rx) {
1127 count++;
1128 if (count >= 8) {
1129 rxq->read = i;
1130 iwlagn_rx_replenish_now(priv);
1131 count = 0;
1132 }
1133 }
1134 }
1135
1136 /* Backtrack one entry */
1137 rxq->read = i;
1138 if (fill_rx)
1139 iwlagn_rx_replenish_now(priv);
1140 else
1141 iwlagn_rx_queue_restock(priv);
1142 }
1143
1144 /* call this function to flush any scheduled tasklet */
1145 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1146 {
1147 /* wait to make sure we flush pending tasklet*/
1148 synchronize_irq(priv->pci_dev->irq);
1149 tasklet_kill(&priv->irq_tasklet);
1150 }
1151
1152 static void iwl_irq_tasklet_legacy(struct iwl_priv *priv)
1153 {
1154 u32 inta, handled = 0;
1155 u32 inta_fh;
1156 unsigned long flags;
1157 u32 i;
1158 #ifdef CONFIG_IWLWIFI_DEBUG
1159 u32 inta_mask;
1160 #endif
1161
1162 spin_lock_irqsave(&priv->lock, flags);
1163
1164 /* Ack/clear/reset pending uCode interrupts.
1165 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1166 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1167 inta = iwl_read32(priv, CSR_INT);
1168 iwl_write32(priv, CSR_INT, inta);
1169
1170 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1171 * Any new interrupts that happen after this, either while we're
1172 * in this tasklet, or later, will show up in next ISR/tasklet. */
1173 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1174 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1175
1176 #ifdef CONFIG_IWLWIFI_DEBUG
1177 if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1178 /* just for debug */
1179 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1180 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1181 inta, inta_mask, inta_fh);
1182 }
1183 #endif
1184
1185 spin_unlock_irqrestore(&priv->lock, flags);
1186
1187 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1188 * atomic, make sure that inta covers all the interrupts that
1189 * we've discovered, even if FH interrupt came in just after
1190 * reading CSR_INT. */
1191 if (inta_fh & CSR49_FH_INT_RX_MASK)
1192 inta |= CSR_INT_BIT_FH_RX;
1193 if (inta_fh & CSR49_FH_INT_TX_MASK)
1194 inta |= CSR_INT_BIT_FH_TX;
1195
1196 /* Now service all interrupt bits discovered above. */
1197 if (inta & CSR_INT_BIT_HW_ERR) {
1198 IWL_ERR(priv, "Hardware error detected. Restarting.\n");
1199
1200 /* Tell the device to stop sending interrupts */
1201 iwl_disable_interrupts(priv);
1202
1203 priv->isr_stats.hw++;
1204 iwl_irq_handle_error(priv);
1205
1206 handled |= CSR_INT_BIT_HW_ERR;
1207
1208 return;
1209 }
1210
1211 #ifdef CONFIG_IWLWIFI_DEBUG
1212 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1213 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1214 if (inta & CSR_INT_BIT_SCD) {
1215 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1216 "the frame/frames.\n");
1217 priv->isr_stats.sch++;
1218 }
1219
1220 /* Alive notification via Rx interrupt will do the real work */
1221 if (inta & CSR_INT_BIT_ALIVE) {
1222 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1223 priv->isr_stats.alive++;
1224 }
1225 }
1226 #endif
1227 /* Safely ignore these bits for debug checks below */
1228 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1229
1230 /* HW RF KILL switch toggled */
1231 if (inta & CSR_INT_BIT_RF_KILL) {
1232 int hw_rf_kill = 0;
1233 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1234 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1235 hw_rf_kill = 1;
1236
1237 IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
1238 hw_rf_kill ? "disable radio" : "enable radio");
1239
1240 priv->isr_stats.rfkill++;
1241
1242 /* driver only loads ucode once setting the interface up.
1243 * the driver allows loading the ucode even if the radio
1244 * is killed. Hence update the killswitch state here. The
1245 * rfkill handler will care about restarting if needed.
1246 */
1247 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1248 if (hw_rf_kill)
1249 set_bit(STATUS_RF_KILL_HW, &priv->status);
1250 else
1251 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1252 wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
1253 }
1254
1255 handled |= CSR_INT_BIT_RF_KILL;
1256 }
1257
1258 /* Chip got too hot and stopped itself */
1259 if (inta & CSR_INT_BIT_CT_KILL) {
1260 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1261 priv->isr_stats.ctkill++;
1262 handled |= CSR_INT_BIT_CT_KILL;
1263 }
1264
1265 /* Error detected by uCode */
1266 if (inta & CSR_INT_BIT_SW_ERR) {
1267 IWL_ERR(priv, "Microcode SW error detected. "
1268 " Restarting 0x%X.\n", inta);
1269 priv->isr_stats.sw++;
1270 iwl_irq_handle_error(priv);
1271 handled |= CSR_INT_BIT_SW_ERR;
1272 }
1273
1274 /*
1275 * uCode wakes up after power-down sleep.
1276 * Tell device about any new tx or host commands enqueued,
1277 * and about any Rx buffers made available while asleep.
1278 */
1279 if (inta & CSR_INT_BIT_WAKEUP) {
1280 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1281 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1282 for (i = 0; i < priv->hw_params.max_txq_num; i++)
1283 iwl_txq_update_write_ptr(priv, &priv->txq[i]);
1284 priv->isr_stats.wakeup++;
1285 handled |= CSR_INT_BIT_WAKEUP;
1286 }
1287
1288 /* All uCode command responses, including Tx command responses,
1289 * Rx "responses" (frame-received notification), and other
1290 * notifications from uCode come through here*/
1291 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1292 iwl_rx_handle(priv);
1293 priv->isr_stats.rx++;
1294 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1295 }
1296
1297 /* This "Tx" DMA channel is used only for loading uCode */
1298 if (inta & CSR_INT_BIT_FH_TX) {
1299 IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
1300 priv->isr_stats.tx++;
1301 handled |= CSR_INT_BIT_FH_TX;
1302 /* Wake up uCode load routine, now that load is complete */
1303 priv->ucode_write_complete = 1;
1304 wake_up_interruptible(&priv->wait_command_queue);
1305 }
1306
1307 if (inta & ~handled) {
1308 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1309 priv->isr_stats.unhandled++;
1310 }
1311
1312 if (inta & ~(priv->inta_mask)) {
1313 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1314 inta & ~priv->inta_mask);
1315 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
1316 }
1317
1318 /* Re-enable all interrupts */
1319 /* only Re-enable if diabled by irq */
1320 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1321 iwl_enable_interrupts(priv);
1322
1323 #ifdef CONFIG_IWLWIFI_DEBUG
1324 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1325 inta = iwl_read32(priv, CSR_INT);
1326 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1327 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1328 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1329 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1330 }
1331 #endif
1332 }
1333
1334 /* tasklet for iwlagn interrupt */
1335 static void iwl_irq_tasklet(struct iwl_priv *priv)
1336 {
1337 u32 inta = 0;
1338 u32 handled = 0;
1339 unsigned long flags;
1340 u32 i;
1341 #ifdef CONFIG_IWLWIFI_DEBUG
1342 u32 inta_mask;
1343 #endif
1344
1345 spin_lock_irqsave(&priv->lock, flags);
1346
1347 /* Ack/clear/reset pending uCode interrupts.
1348 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1349 */
1350 /* There is a hardware bug in the interrupt mask function that some
1351 * interrupts (i.e. CSR_INT_BIT_SCD) can still be generated even if
1352 * they are disabled in the CSR_INT_MASK register. Furthermore the
1353 * ICT interrupt handling mechanism has another bug that might cause
1354 * these unmasked interrupts fail to be detected. We workaround the
1355 * hardware bugs here by ACKing all the possible interrupts so that
1356 * interrupt coalescing can still be achieved.
1357 */
1358 iwl_write32(priv, CSR_INT, priv->_agn.inta | ~priv->inta_mask);
1359
1360 inta = priv->_agn.inta;
1361
1362 #ifdef CONFIG_IWLWIFI_DEBUG
1363 if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1364 /* just for debug */
1365 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1366 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x\n ",
1367 inta, inta_mask);
1368 }
1369 #endif
1370
1371 spin_unlock_irqrestore(&priv->lock, flags);
1372
1373 /* saved interrupt in inta variable now we can reset priv->_agn.inta */
1374 priv->_agn.inta = 0;
1375
1376 /* Now service all interrupt bits discovered above. */
1377 if (inta & CSR_INT_BIT_HW_ERR) {
1378 IWL_ERR(priv, "Hardware error detected. Restarting.\n");
1379
1380 /* Tell the device to stop sending interrupts */
1381 iwl_disable_interrupts(priv);
1382
1383 priv->isr_stats.hw++;
1384 iwl_irq_handle_error(priv);
1385
1386 handled |= CSR_INT_BIT_HW_ERR;
1387
1388 return;
1389 }
1390
1391 #ifdef CONFIG_IWLWIFI_DEBUG
1392 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1393 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1394 if (inta & CSR_INT_BIT_SCD) {
1395 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1396 "the frame/frames.\n");
1397 priv->isr_stats.sch++;
1398 }
1399
1400 /* Alive notification via Rx interrupt will do the real work */
1401 if (inta & CSR_INT_BIT_ALIVE) {
1402 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1403 priv->isr_stats.alive++;
1404 }
1405 }
1406 #endif
1407 /* Safely ignore these bits for debug checks below */
1408 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1409
1410 /* HW RF KILL switch toggled */
1411 if (inta & CSR_INT_BIT_RF_KILL) {
1412 int hw_rf_kill = 0;
1413 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1414 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1415 hw_rf_kill = 1;
1416
1417 IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
1418 hw_rf_kill ? "disable radio" : "enable radio");
1419
1420 priv->isr_stats.rfkill++;
1421
1422 /* driver only loads ucode once setting the interface up.
1423 * the driver allows loading the ucode even if the radio
1424 * is killed. Hence update the killswitch state here. The
1425 * rfkill handler will care about restarting if needed.
1426 */
1427 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1428 if (hw_rf_kill)
1429 set_bit(STATUS_RF_KILL_HW, &priv->status);
1430 else
1431 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1432 wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
1433 }
1434
1435 handled |= CSR_INT_BIT_RF_KILL;
1436 }
1437
1438 /* Chip got too hot and stopped itself */
1439 if (inta & CSR_INT_BIT_CT_KILL) {
1440 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1441 priv->isr_stats.ctkill++;
1442 handled |= CSR_INT_BIT_CT_KILL;
1443 }
1444
1445 /* Error detected by uCode */
1446 if (inta & CSR_INT_BIT_SW_ERR) {
1447 IWL_ERR(priv, "Microcode SW error detected. "
1448 " Restarting 0x%X.\n", inta);
1449 priv->isr_stats.sw++;
1450 iwl_irq_handle_error(priv);
1451 handled |= CSR_INT_BIT_SW_ERR;
1452 }
1453
1454 /* uCode wakes up after power-down sleep */
1455 if (inta & CSR_INT_BIT_WAKEUP) {
1456 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1457 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1458 for (i = 0; i < priv->hw_params.max_txq_num; i++)
1459 iwl_txq_update_write_ptr(priv, &priv->txq[i]);
1460
1461 priv->isr_stats.wakeup++;
1462
1463 handled |= CSR_INT_BIT_WAKEUP;
1464 }
1465
1466 /* All uCode command responses, including Tx command responses,
1467 * Rx "responses" (frame-received notification), and other
1468 * notifications from uCode come through here*/
1469 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX |
1470 CSR_INT_BIT_RX_PERIODIC)) {
1471 IWL_DEBUG_ISR(priv, "Rx interrupt\n");
1472 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1473 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1474 iwl_write32(priv, CSR_FH_INT_STATUS,
1475 CSR49_FH_INT_RX_MASK);
1476 }
1477 if (inta & CSR_INT_BIT_RX_PERIODIC) {
1478 handled |= CSR_INT_BIT_RX_PERIODIC;
1479 iwl_write32(priv, CSR_INT, CSR_INT_BIT_RX_PERIODIC);
1480 }
1481 /* Sending RX interrupt require many steps to be done in the
1482 * the device:
1483 * 1- write interrupt to current index in ICT table.
1484 * 2- dma RX frame.
1485 * 3- update RX shared data to indicate last write index.
1486 * 4- send interrupt.
1487 * This could lead to RX race, driver could receive RX interrupt
1488 * but the shared data changes does not reflect this;
1489 * periodic interrupt will detect any dangling Rx activity.
1490 */
1491
1492 /* Disable periodic interrupt; we use it as just a one-shot. */
1493 iwl_write8(priv, CSR_INT_PERIODIC_REG,
1494 CSR_INT_PERIODIC_DIS);
1495 iwl_rx_handle(priv);
1496
1497 /*
1498 * Enable periodic interrupt in 8 msec only if we received
1499 * real RX interrupt (instead of just periodic int), to catch
1500 * any dangling Rx interrupt. If it was just the periodic
1501 * interrupt, there was no dangling Rx activity, and no need
1502 * to extend the periodic interrupt; one-shot is enough.
1503 */
1504 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX))
1505 iwl_write8(priv, CSR_INT_PERIODIC_REG,
1506 CSR_INT_PERIODIC_ENA);
1507
1508 priv->isr_stats.rx++;
1509 }
1510
1511 /* This "Tx" DMA channel is used only for loading uCode */
1512 if (inta & CSR_INT_BIT_FH_TX) {
1513 iwl_write32(priv, CSR_FH_INT_STATUS, CSR49_FH_INT_TX_MASK);
1514 IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
1515 priv->isr_stats.tx++;
1516 handled |= CSR_INT_BIT_FH_TX;
1517 /* Wake up uCode load routine, now that load is complete */
1518 priv->ucode_write_complete = 1;
1519 wake_up_interruptible(&priv->wait_command_queue);
1520 }
1521
1522 if (inta & ~handled) {
1523 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1524 priv->isr_stats.unhandled++;
1525 }
1526
1527 if (inta & ~(priv->inta_mask)) {
1528 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1529 inta & ~priv->inta_mask);
1530 }
1531
1532 /* Re-enable all interrupts */
1533 /* only Re-enable if diabled by irq */
1534 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1535 iwl_enable_interrupts(priv);
1536 }
1537
1538 /* the threshold ratio of actual_ack_cnt to expected_ack_cnt in percent */
1539 #define ACK_CNT_RATIO (50)
1540 #define BA_TIMEOUT_CNT (5)
1541 #define BA_TIMEOUT_MAX (16)
1542
1543 /**
1544 * iwl_good_ack_health - checks for ACK count ratios, BA timeout retries.
1545 *
1546 * When the ACK count ratio is 0 and aggregated BA timeout retries exceeding
1547 * the BA_TIMEOUT_MAX, reload firmware and bring system back to normal
1548 * operation state.
1549 */
1550 bool iwl_good_ack_health(struct iwl_priv *priv,
1551 struct iwl_rx_packet *pkt)
1552 {
1553 bool rc = true;
1554 int actual_ack_cnt_delta, expected_ack_cnt_delta;
1555 int ba_timeout_delta;
1556
1557 actual_ack_cnt_delta =
1558 le32_to_cpu(pkt->u.stats.tx.actual_ack_cnt) -
1559 le32_to_cpu(priv->_agn.statistics.tx.actual_ack_cnt);
1560 expected_ack_cnt_delta =
1561 le32_to_cpu(pkt->u.stats.tx.expected_ack_cnt) -
1562 le32_to_cpu(priv->_agn.statistics.tx.expected_ack_cnt);
1563 ba_timeout_delta =
1564 le32_to_cpu(pkt->u.stats.tx.agg.ba_timeout) -
1565 le32_to_cpu(priv->_agn.statistics.tx.agg.ba_timeout);
1566 if ((priv->_agn.agg_tids_count > 0) &&
1567 (expected_ack_cnt_delta > 0) &&
1568 (((actual_ack_cnt_delta * 100) / expected_ack_cnt_delta)
1569 < ACK_CNT_RATIO) &&
1570 (ba_timeout_delta > BA_TIMEOUT_CNT)) {
1571 IWL_DEBUG_RADIO(priv, "actual_ack_cnt delta = %d,"
1572 " expected_ack_cnt = %d\n",
1573 actual_ack_cnt_delta, expected_ack_cnt_delta);
1574
1575 #ifdef CONFIG_IWLWIFI_DEBUGFS
1576 /*
1577 * This is ifdef'ed on DEBUGFS because otherwise the
1578 * statistics aren't available. If DEBUGFS is set but
1579 * DEBUG is not, these will just compile out.
1580 */
1581 IWL_DEBUG_RADIO(priv, "rx_detected_cnt delta = %d\n",
1582 priv->_agn.delta_statistics.tx.rx_detected_cnt);
1583 IWL_DEBUG_RADIO(priv,
1584 "ack_or_ba_timeout_collision delta = %d\n",
1585 priv->_agn.delta_statistics.tx.
1586 ack_or_ba_timeout_collision);
1587 #endif
1588 IWL_DEBUG_RADIO(priv, "agg ba_timeout delta = %d\n",
1589 ba_timeout_delta);
1590 if (!actual_ack_cnt_delta &&
1591 (ba_timeout_delta >= BA_TIMEOUT_MAX))
1592 rc = false;
1593 }
1594 return rc;
1595 }
1596
1597
1598 /*****************************************************************************
1599 *
1600 * sysfs attributes
1601 *
1602 *****************************************************************************/
1603
1604 #ifdef CONFIG_IWLWIFI_DEBUG
1605
1606 /*
1607 * The following adds a new attribute to the sysfs representation
1608 * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
1609 * used for controlling the debug level.
1610 *
1611 * See the level definitions in iwl for details.
1612 *
1613 * The debug_level being managed using sysfs below is a per device debug
1614 * level that is used instead of the global debug level if it (the per
1615 * device debug level) is set.
1616 */
1617 static ssize_t show_debug_level(struct device *d,
1618 struct device_attribute *attr, char *buf)
1619 {
1620 struct iwl_priv *priv = dev_get_drvdata(d);
1621 return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
1622 }
1623 static ssize_t store_debug_level(struct device *d,
1624 struct device_attribute *attr,
1625 const char *buf, size_t count)
1626 {
1627 struct iwl_priv *priv = dev_get_drvdata(d);
1628 unsigned long val;
1629 int ret;
1630
1631 ret = strict_strtoul(buf, 0, &val);
1632 if (ret)
1633 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
1634 else {
1635 priv->debug_level = val;
1636 if (iwl_alloc_traffic_mem(priv))
1637 IWL_ERR(priv,
1638 "Not enough memory to generate traffic log\n");
1639 }
1640 return strnlen(buf, count);
1641 }
1642
1643 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
1644 show_debug_level, store_debug_level);
1645
1646
1647 #endif /* CONFIG_IWLWIFI_DEBUG */
1648
1649
1650 static ssize_t show_temperature(struct device *d,
1651 struct device_attribute *attr, char *buf)
1652 {
1653 struct iwl_priv *priv = dev_get_drvdata(d);
1654
1655 if (!iwl_is_alive(priv))
1656 return -EAGAIN;
1657
1658 return sprintf(buf, "%d\n", priv->temperature);
1659 }
1660
1661 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
1662
1663 static ssize_t show_tx_power(struct device *d,
1664 struct device_attribute *attr, char *buf)
1665 {
1666 struct iwl_priv *priv = dev_get_drvdata(d);
1667
1668 if (!iwl_is_ready_rf(priv))
1669 return sprintf(buf, "off\n");
1670 else
1671 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
1672 }
1673
1674 static ssize_t store_tx_power(struct device *d,
1675 struct device_attribute *attr,
1676 const char *buf, size_t count)
1677 {
1678 struct iwl_priv *priv = dev_get_drvdata(d);
1679 unsigned long val;
1680 int ret;
1681
1682 ret = strict_strtoul(buf, 10, &val);
1683 if (ret)
1684 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
1685 else {
1686 ret = iwl_set_tx_power(priv, val, false);
1687 if (ret)
1688 IWL_ERR(priv, "failed setting tx power (0x%d).\n",
1689 ret);
1690 else
1691 ret = count;
1692 }
1693 return ret;
1694 }
1695
1696 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
1697
1698 static struct attribute *iwl_sysfs_entries[] = {
1699 &dev_attr_temperature.attr,
1700 &dev_attr_tx_power.attr,
1701 #ifdef CONFIG_IWLWIFI_DEBUG
1702 &dev_attr_debug_level.attr,
1703 #endif
1704 NULL
1705 };
1706
1707 static struct attribute_group iwl_attribute_group = {
1708 .name = NULL, /* put in device directory */
1709 .attrs = iwl_sysfs_entries,
1710 };
1711
1712 /******************************************************************************
1713 *
1714 * uCode download functions
1715 *
1716 ******************************************************************************/
1717
1718 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1719 {
1720 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1721 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1722 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1723 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1724 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1725 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1726 }
1727
1728 static void iwl_nic_start(struct iwl_priv *priv)
1729 {
1730 /* Remove all resets to allow NIC to operate */
1731 iwl_write32(priv, CSR_RESET, 0);
1732 }
1733
1734 struct iwlagn_ucode_capabilities {
1735 u32 max_probe_length;
1736 u32 standard_phy_calibration_size;
1737 bool pan;
1738 };
1739
1740 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
1741 static int iwl_mac_setup_register(struct iwl_priv *priv,
1742 struct iwlagn_ucode_capabilities *capa);
1743
1744 #define UCODE_EXPERIMENTAL_INDEX 100
1745 #define UCODE_EXPERIMENTAL_TAG "exp"
1746
1747 static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
1748 {
1749 const char *name_pre = priv->cfg->fw_name_pre;
1750 char tag[8];
1751
1752 if (first) {
1753 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
1754 priv->fw_index = UCODE_EXPERIMENTAL_INDEX;
1755 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
1756 } else if (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
1757 #endif
1758 priv->fw_index = priv->cfg->ucode_api_max;
1759 sprintf(tag, "%d", priv->fw_index);
1760 } else {
1761 priv->fw_index--;
1762 sprintf(tag, "%d", priv->fw_index);
1763 }
1764
1765 if (priv->fw_index < priv->cfg->ucode_api_min) {
1766 IWL_ERR(priv, "no suitable firmware found!\n");
1767 return -ENOENT;
1768 }
1769
1770 sprintf(priv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
1771
1772 IWL_DEBUG_INFO(priv, "attempting to load firmware %s'%s'\n",
1773 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
1774 ? "EXPERIMENTAL " : "",
1775 priv->firmware_name);
1776
1777 return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
1778 &priv->pci_dev->dev, GFP_KERNEL, priv,
1779 iwl_ucode_callback);
1780 }
1781
1782 struct iwlagn_firmware_pieces {
1783 const void *inst, *data, *init, *init_data, *boot;
1784 size_t inst_size, data_size, init_size, init_data_size, boot_size;
1785
1786 u32 build;
1787
1788 u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
1789 u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
1790 };
1791
1792 static int iwlagn_load_legacy_firmware(struct iwl_priv *priv,
1793 const struct firmware *ucode_raw,
1794 struct iwlagn_firmware_pieces *pieces)
1795 {
1796 struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
1797 u32 api_ver, hdr_size;
1798 const u8 *src;
1799
1800 priv->ucode_ver = le32_to_cpu(ucode->ver);
1801 api_ver = IWL_UCODE_API(priv->ucode_ver);
1802
1803 switch (api_ver) {
1804 default:
1805 /*
1806 * 4965 doesn't revision the firmware file format
1807 * along with the API version, it always uses v1
1808 * file format.
1809 */
1810 if ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) !=
1811 CSR_HW_REV_TYPE_4965) {
1812 hdr_size = 28;
1813 if (ucode_raw->size < hdr_size) {
1814 IWL_ERR(priv, "File size too small!\n");
1815 return -EINVAL;
1816 }
1817 pieces->build = le32_to_cpu(ucode->u.v2.build);
1818 pieces->inst_size = le32_to_cpu(ucode->u.v2.inst_size);
1819 pieces->data_size = le32_to_cpu(ucode->u.v2.data_size);
1820 pieces->init_size = le32_to_cpu(ucode->u.v2.init_size);
1821 pieces->init_data_size = le32_to_cpu(ucode->u.v2.init_data_size);
1822 pieces->boot_size = le32_to_cpu(ucode->u.v2.boot_size);
1823 src = ucode->u.v2.data;
1824 break;
1825 }
1826 /* fall through for 4965 */
1827 case 0:
1828 case 1:
1829 case 2:
1830 hdr_size = 24;
1831 if (ucode_raw->size < hdr_size) {
1832 IWL_ERR(priv, "File size too small!\n");
1833 return -EINVAL;
1834 }
1835 pieces->build = 0;
1836 pieces->inst_size = le32_to_cpu(ucode->u.v1.inst_size);
1837 pieces->data_size = le32_to_cpu(ucode->u.v1.data_size);
1838 pieces->init_size = le32_to_cpu(ucode->u.v1.init_size);
1839 pieces->init_data_size = le32_to_cpu(ucode->u.v1.init_data_size);
1840 pieces->boot_size = le32_to_cpu(ucode->u.v1.boot_size);
1841 src = ucode->u.v1.data;
1842 break;
1843 }
1844
1845 /* Verify size of file vs. image size info in file's header */
1846 if (ucode_raw->size != hdr_size + pieces->inst_size +
1847 pieces->data_size + pieces->init_size +
1848 pieces->init_data_size + pieces->boot_size) {
1849
1850 IWL_ERR(priv,
1851 "uCode file size %d does not match expected size\n",
1852 (int)ucode_raw->size);
1853 return -EINVAL;
1854 }
1855
1856 pieces->inst = src;
1857 src += pieces->inst_size;
1858 pieces->data = src;
1859 src += pieces->data_size;
1860 pieces->init = src;
1861 src += pieces->init_size;
1862 pieces->init_data = src;
1863 src += pieces->init_data_size;
1864 pieces->boot = src;
1865 src += pieces->boot_size;
1866
1867 return 0;
1868 }
1869
1870 static int iwlagn_wanted_ucode_alternative = 1;
1871
1872 static int iwlagn_load_firmware(struct iwl_priv *priv,
1873 const struct firmware *ucode_raw,
1874 struct iwlagn_firmware_pieces *pieces,
1875 struct iwlagn_ucode_capabilities *capa)
1876 {
1877 struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
1878 struct iwl_ucode_tlv *tlv;
1879 size_t len = ucode_raw->size;
1880 const u8 *data;
1881 int wanted_alternative = iwlagn_wanted_ucode_alternative, tmp;
1882 u64 alternatives;
1883 u32 tlv_len;
1884 enum iwl_ucode_tlv_type tlv_type;
1885 const u8 *tlv_data;
1886
1887 if (len < sizeof(*ucode)) {
1888 IWL_ERR(priv, "uCode has invalid length: %zd\n", len);
1889 return -EINVAL;
1890 }
1891
1892 if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
1893 IWL_ERR(priv, "invalid uCode magic: 0X%x\n",
1894 le32_to_cpu(ucode->magic));
1895 return -EINVAL;
1896 }
1897
1898 /*
1899 * Check which alternatives are present, and "downgrade"
1900 * when the chosen alternative is not present, warning
1901 * the user when that happens. Some files may not have
1902 * any alternatives, so don't warn in that case.
1903 */
1904 alternatives = le64_to_cpu(ucode->alternatives);
1905 tmp = wanted_alternative;
1906 if (wanted_alternative > 63)
1907 wanted_alternative = 63;
1908 while (wanted_alternative && !(alternatives & BIT(wanted_alternative)))
1909 wanted_alternative--;
1910 if (wanted_alternative && wanted_alternative != tmp)
1911 IWL_WARN(priv,
1912 "uCode alternative %d not available, choosing %d\n",
1913 tmp, wanted_alternative);
1914
1915 priv->ucode_ver = le32_to_cpu(ucode->ver);
1916 pieces->build = le32_to_cpu(ucode->build);
1917 data = ucode->data;
1918
1919 len -= sizeof(*ucode);
1920
1921 while (len >= sizeof(*tlv)) {
1922 u16 tlv_alt;
1923
1924 len -= sizeof(*tlv);
1925 tlv = (void *)data;
1926
1927 tlv_len = le32_to_cpu(tlv->length);
1928 tlv_type = le16_to_cpu(tlv->type);
1929 tlv_alt = le16_to_cpu(tlv->alternative);
1930 tlv_data = tlv->data;
1931
1932 if (len < tlv_len) {
1933 IWL_ERR(priv, "invalid TLV len: %zd/%u\n",
1934 len, tlv_len);
1935 return -EINVAL;
1936 }
1937 len -= ALIGN(tlv_len, 4);
1938 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
1939
1940 /*
1941 * Alternative 0 is always valid.
1942 *
1943 * Skip alternative TLVs that are not selected.
1944 */
1945 if (tlv_alt != 0 && tlv_alt != wanted_alternative)
1946 continue;
1947
1948 switch (tlv_type) {
1949 case IWL_UCODE_TLV_INST:
1950 pieces->inst = tlv_data;
1951 pieces->inst_size = tlv_len;
1952 break;
1953 case IWL_UCODE_TLV_DATA:
1954 pieces->data = tlv_data;
1955 pieces->data_size = tlv_len;
1956 break;
1957 case IWL_UCODE_TLV_INIT:
1958 pieces->init = tlv_data;
1959 pieces->init_size = tlv_len;
1960 break;
1961 case IWL_UCODE_TLV_INIT_DATA:
1962 pieces->init_data = tlv_data;
1963 pieces->init_data_size = tlv_len;
1964 break;
1965 case IWL_UCODE_TLV_BOOT:
1966 pieces->boot = tlv_data;
1967 pieces->boot_size = tlv_len;
1968 break;
1969 case IWL_UCODE_TLV_PROBE_MAX_LEN:
1970 if (tlv_len != sizeof(u32))
1971 goto invalid_tlv_len;
1972 capa->max_probe_length =
1973 le32_to_cpup((__le32 *)tlv_data);
1974 break;
1975 case IWL_UCODE_TLV_PAN:
1976 if (tlv_len)
1977 goto invalid_tlv_len;
1978 capa->pan = true;
1979 break;
1980 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
1981 if (tlv_len != sizeof(u32))
1982 goto invalid_tlv_len;
1983 pieces->init_evtlog_ptr =
1984 le32_to_cpup((__le32 *)tlv_data);
1985 break;
1986 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
1987 if (tlv_len != sizeof(u32))
1988 goto invalid_tlv_len;
1989 pieces->init_evtlog_size =
1990 le32_to_cpup((__le32 *)tlv_data);
1991 break;
1992 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
1993 if (tlv_len != sizeof(u32))
1994 goto invalid_tlv_len;
1995 pieces->init_errlog_ptr =
1996 le32_to_cpup((__le32 *)tlv_data);
1997 break;
1998 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
1999 if (tlv_len != sizeof(u32))
2000 goto invalid_tlv_len;
2001 pieces->inst_evtlog_ptr =
2002 le32_to_cpup((__le32 *)tlv_data);
2003 break;
2004 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
2005 if (tlv_len != sizeof(u32))
2006 goto invalid_tlv_len;
2007 pieces->inst_evtlog_size =
2008 le32_to_cpup((__le32 *)tlv_data);
2009 break;
2010 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
2011 if (tlv_len != sizeof(u32))
2012 goto invalid_tlv_len;
2013 pieces->inst_errlog_ptr =
2014 le32_to_cpup((__le32 *)tlv_data);
2015 break;
2016 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
2017 if (tlv_len)
2018 goto invalid_tlv_len;
2019 priv->enhance_sensitivity_table = true;
2020 break;
2021 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
2022 if (tlv_len != sizeof(u32))
2023 goto invalid_tlv_len;
2024 capa->standard_phy_calibration_size =
2025 le32_to_cpup((__le32 *)tlv_data);
2026 break;
2027 default:
2028 IWL_WARN(priv, "unknown TLV: %d\n", tlv_type);
2029 break;
2030 }
2031 }
2032
2033 if (len) {
2034 IWL_ERR(priv, "invalid TLV after parsing: %zd\n", len);
2035 iwl_print_hex_dump(priv, IWL_DL_FW, (u8 *)data, len);
2036 return -EINVAL;
2037 }
2038
2039 return 0;
2040
2041 invalid_tlv_len:
2042 IWL_ERR(priv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
2043 iwl_print_hex_dump(priv, IWL_DL_FW, tlv_data, tlv_len);
2044
2045 return -EINVAL;
2046 }
2047
2048 /**
2049 * iwl_ucode_callback - callback when firmware was loaded
2050 *
2051 * If loaded successfully, copies the firmware into buffers
2052 * for the card to fetch (via DMA).
2053 */
2054 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
2055 {
2056 struct iwl_priv *priv = context;
2057 struct iwl_ucode_header *ucode;
2058 int err;
2059 struct iwlagn_firmware_pieces pieces;
2060 const unsigned int api_max = priv->cfg->ucode_api_max;
2061 const unsigned int api_min = priv->cfg->ucode_api_min;
2062 u32 api_ver;
2063 char buildstr[25];
2064 u32 build;
2065 struct iwlagn_ucode_capabilities ucode_capa = {
2066 .max_probe_length = 200,
2067 .standard_phy_calibration_size =
2068 IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE,
2069 };
2070
2071 memset(&pieces, 0, sizeof(pieces));
2072
2073 if (!ucode_raw) {
2074 if (priv->fw_index <= priv->cfg->ucode_api_max)
2075 IWL_ERR(priv,
2076 "request for firmware file '%s' failed.\n",
2077 priv->firmware_name);
2078 goto try_again;
2079 }
2080
2081 IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
2082 priv->firmware_name, ucode_raw->size);
2083
2084 /* Make sure that we got at least the API version number */
2085 if (ucode_raw->size < 4) {
2086 IWL_ERR(priv, "File size way too small!\n");
2087 goto try_again;
2088 }
2089
2090 /* Data from ucode file: header followed by uCode images */
2091 ucode = (struct iwl_ucode_header *)ucode_raw->data;
2092
2093 if (ucode->ver)
2094 err = iwlagn_load_legacy_firmware(priv, ucode_raw, &pieces);
2095 else
2096 err = iwlagn_load_firmware(priv, ucode_raw, &pieces,
2097 &ucode_capa);
2098
2099 if (err)
2100 goto try_again;
2101
2102 api_ver = IWL_UCODE_API(priv->ucode_ver);
2103 build = pieces.build;
2104
2105 /*
2106 * api_ver should match the api version forming part of the
2107 * firmware filename ... but we don't check for that and only rely
2108 * on the API version read from firmware header from here on forward
2109 */
2110 /* no api version check required for experimental uCode */
2111 if (priv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
2112 if (api_ver < api_min || api_ver > api_max) {
2113 IWL_ERR(priv,
2114 "Driver unable to support your firmware API. "
2115 "Driver supports v%u, firmware is v%u.\n",
2116 api_max, api_ver);
2117 goto try_again;
2118 }
2119
2120 if (api_ver != api_max)
2121 IWL_ERR(priv,
2122 "Firmware has old API version. Expected v%u, "
2123 "got v%u. New firmware can be obtained "
2124 "from http://www.intellinuxwireless.org.\n",
2125 api_max, api_ver);
2126 }
2127
2128 if (build)
2129 sprintf(buildstr, " build %u%s", build,
2130 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
2131 ? " (EXP)" : "");
2132 else
2133 buildstr[0] = '\0';
2134
2135 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u%s\n",
2136 IWL_UCODE_MAJOR(priv->ucode_ver),
2137 IWL_UCODE_MINOR(priv->ucode_ver),
2138 IWL_UCODE_API(priv->ucode_ver),
2139 IWL_UCODE_SERIAL(priv->ucode_ver),
2140 buildstr);
2141
2142 snprintf(priv->hw->wiphy->fw_version,
2143 sizeof(priv->hw->wiphy->fw_version),
2144 "%u.%u.%u.%u%s",
2145 IWL_UCODE_MAJOR(priv->ucode_ver),
2146 IWL_UCODE_MINOR(priv->ucode_ver),
2147 IWL_UCODE_API(priv->ucode_ver),
2148 IWL_UCODE_SERIAL(priv->ucode_ver),
2149 buildstr);
2150
2151 /*
2152 * For any of the failures below (before allocating pci memory)
2153 * we will try to load a version with a smaller API -- maybe the
2154 * user just got a corrupted version of the latest API.
2155 */
2156
2157 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2158 priv->ucode_ver);
2159 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %Zd\n",
2160 pieces.inst_size);
2161 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %Zd\n",
2162 pieces.data_size);
2163 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %Zd\n",
2164 pieces.init_size);
2165 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %Zd\n",
2166 pieces.init_data_size);
2167 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %Zd\n",
2168 pieces.boot_size);
2169
2170 /* Verify that uCode images will fit in card's SRAM */
2171 if (pieces.inst_size > priv->hw_params.max_inst_size) {
2172 IWL_ERR(priv, "uCode instr len %Zd too large to fit in\n",
2173 pieces.inst_size);
2174 goto try_again;
2175 }
2176
2177 if (pieces.data_size > priv->hw_params.max_data_size) {
2178 IWL_ERR(priv, "uCode data len %Zd too large to fit in\n",
2179 pieces.data_size);
2180 goto try_again;
2181 }
2182
2183 if (pieces.init_size > priv->hw_params.max_inst_size) {
2184 IWL_ERR(priv, "uCode init instr len %Zd too large to fit in\n",
2185 pieces.init_size);
2186 goto try_again;
2187 }
2188
2189 if (pieces.init_data_size > priv->hw_params.max_data_size) {
2190 IWL_ERR(priv, "uCode init data len %Zd too large to fit in\n",
2191 pieces.init_data_size);
2192 goto try_again;
2193 }
2194
2195 if (pieces.boot_size > priv->hw_params.max_bsm_size) {
2196 IWL_ERR(priv, "uCode boot instr len %Zd too large to fit in\n",
2197 pieces.boot_size);
2198 goto try_again;
2199 }
2200
2201 /* Allocate ucode buffers for card's bus-master loading ... */
2202
2203 /* Runtime instructions and 2 copies of data:
2204 * 1) unmodified from disk
2205 * 2) backup cache for save/restore during power-downs */
2206 priv->ucode_code.len = pieces.inst_size;
2207 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2208
2209 priv->ucode_data.len = pieces.data_size;
2210 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2211
2212 priv->ucode_data_backup.len = pieces.data_size;
2213 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2214
2215 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2216 !priv->ucode_data_backup.v_addr)
2217 goto err_pci_alloc;
2218
2219 /* Initialization instructions and data */
2220 if (pieces.init_size && pieces.init_data_size) {
2221 priv->ucode_init.len = pieces.init_size;
2222 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2223
2224 priv->ucode_init_data.len = pieces.init_data_size;
2225 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2226
2227 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2228 goto err_pci_alloc;
2229 }
2230
2231 /* Bootstrap (instructions only, no data) */
2232 if (pieces.boot_size) {
2233 priv->ucode_boot.len = pieces.boot_size;
2234 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2235
2236 if (!priv->ucode_boot.v_addr)
2237 goto err_pci_alloc;
2238 }
2239
2240 /* Now that we can no longer fail, copy information */
2241
2242 /*
2243 * The (size - 16) / 12 formula is based on the information recorded
2244 * for each event, which is of mode 1 (including timestamp) for all
2245 * new microcodes that include this information.
2246 */
2247 priv->_agn.init_evtlog_ptr = pieces.init_evtlog_ptr;
2248 if (pieces.init_evtlog_size)
2249 priv->_agn.init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
2250 else
2251 priv->_agn.init_evtlog_size =
2252 priv->cfg->base_params->max_event_log_size;
2253 priv->_agn.init_errlog_ptr = pieces.init_errlog_ptr;
2254 priv->_agn.inst_evtlog_ptr = pieces.inst_evtlog_ptr;
2255 if (pieces.inst_evtlog_size)
2256 priv->_agn.inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
2257 else
2258 priv->_agn.inst_evtlog_size =
2259 priv->cfg->base_params->max_event_log_size;
2260 priv->_agn.inst_errlog_ptr = pieces.inst_errlog_ptr;
2261
2262 if (ucode_capa.pan) {
2263 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
2264 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
2265 } else
2266 priv->sta_key_max_num = STA_KEY_MAX_NUM;
2267
2268 /* Copy images into buffers for card's bus-master reads ... */
2269
2270 /* Runtime instructions (first block of data in file) */
2271 IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode instr len %Zd\n",
2272 pieces.inst_size);
2273 memcpy(priv->ucode_code.v_addr, pieces.inst, pieces.inst_size);
2274
2275 IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2276 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2277
2278 /*
2279 * Runtime data
2280 * NOTE: Copy into backup buffer will be done in iwl_up()
2281 */
2282 IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode data len %Zd\n",
2283 pieces.data_size);
2284 memcpy(priv->ucode_data.v_addr, pieces.data, pieces.data_size);
2285 memcpy(priv->ucode_data_backup.v_addr, pieces.data, pieces.data_size);
2286
2287 /* Initialization instructions */
2288 if (pieces.init_size) {
2289 IWL_DEBUG_INFO(priv, "Copying (but not loading) init instr len %Zd\n",
2290 pieces.init_size);
2291 memcpy(priv->ucode_init.v_addr, pieces.init, pieces.init_size);
2292 }
2293
2294 /* Initialization data */
2295 if (pieces.init_data_size) {
2296 IWL_DEBUG_INFO(priv, "Copying (but not loading) init data len %Zd\n",
2297 pieces.init_data_size);
2298 memcpy(priv->ucode_init_data.v_addr, pieces.init_data,
2299 pieces.init_data_size);
2300 }
2301
2302 /* Bootstrap instructions */
2303 IWL_DEBUG_INFO(priv, "Copying (but not loading) boot instr len %Zd\n",
2304 pieces.boot_size);
2305 memcpy(priv->ucode_boot.v_addr, pieces.boot, pieces.boot_size);
2306
2307 /*
2308 * figure out the offset of chain noise reset and gain commands
2309 * base on the size of standard phy calibration commands table size
2310 */
2311 if (ucode_capa.standard_phy_calibration_size >
2312 IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
2313 ucode_capa.standard_phy_calibration_size =
2314 IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
2315
2316 priv->_agn.phy_calib_chain_noise_reset_cmd =
2317 ucode_capa.standard_phy_calibration_size;
2318 priv->_agn.phy_calib_chain_noise_gain_cmd =
2319 ucode_capa.standard_phy_calibration_size + 1;
2320
2321 /**************************************************
2322 * This is still part of probe() in a sense...
2323 *
2324 * 9. Setup and register with mac80211 and debugfs
2325 **************************************************/
2326 err = iwl_mac_setup_register(priv, &ucode_capa);
2327 if (err)
2328 goto out_unbind;
2329
2330 err = iwl_dbgfs_register(priv, DRV_NAME);
2331 if (err)
2332 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
2333
2334 err = sysfs_create_group(&priv->pci_dev->dev.kobj,
2335 &iwl_attribute_group);
2336 if (err) {
2337 IWL_ERR(priv, "failed to create sysfs device attributes\n");
2338 goto out_unbind;
2339 }
2340
2341 /* We have our copies now, allow OS release its copies */
2342 release_firmware(ucode_raw);
2343 complete(&priv->_agn.firmware_loading_complete);
2344 return;
2345
2346 try_again:
2347 /* try next, if any */
2348 if (iwl_request_firmware(priv, false))
2349 goto out_unbind;
2350 release_firmware(ucode_raw);
2351 return;
2352
2353 err_pci_alloc:
2354 IWL_ERR(priv, "failed to allocate pci memory\n");
2355 iwl_dealloc_ucode_pci(priv);
2356 out_unbind:
2357 complete(&priv->_agn.firmware_loading_complete);
2358 device_release_driver(&priv->pci_dev->dev);
2359 release_firmware(ucode_raw);
2360 }
2361
2362 static const char *desc_lookup_text[] = {
2363 "OK",
2364 "FAIL",
2365 "BAD_PARAM",
2366 "BAD_CHECKSUM",
2367 "NMI_INTERRUPT_WDG",
2368 "SYSASSERT",
2369 "FATAL_ERROR",
2370 "BAD_COMMAND",
2371 "HW_ERROR_TUNE_LOCK",
2372 "HW_ERROR_TEMPERATURE",
2373 "ILLEGAL_CHAN_FREQ",
2374 "VCC_NOT_STABLE",
2375 "FH_ERROR",
2376 "NMI_INTERRUPT_HOST",
2377 "NMI_INTERRUPT_ACTION_PT",
2378 "NMI_INTERRUPT_UNKNOWN",
2379 "UCODE_VERSION_MISMATCH",
2380 "HW_ERROR_ABS_LOCK",
2381 "HW_ERROR_CAL_LOCK_FAIL",
2382 "NMI_INTERRUPT_INST_ACTION_PT",
2383 "NMI_INTERRUPT_DATA_ACTION_PT",
2384 "NMI_TRM_HW_ER",
2385 "NMI_INTERRUPT_TRM",
2386 "NMI_INTERRUPT_BREAK_POINT"
2387 "DEBUG_0",
2388 "DEBUG_1",
2389 "DEBUG_2",
2390 "DEBUG_3",
2391 };
2392
2393 static struct { char *name; u8 num; } advanced_lookup[] = {
2394 { "NMI_INTERRUPT_WDG", 0x34 },
2395 { "SYSASSERT", 0x35 },
2396 { "UCODE_VERSION_MISMATCH", 0x37 },
2397 { "BAD_COMMAND", 0x38 },
2398 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
2399 { "FATAL_ERROR", 0x3D },
2400 { "NMI_TRM_HW_ERR", 0x46 },
2401 { "NMI_INTERRUPT_TRM", 0x4C },
2402 { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
2403 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
2404 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
2405 { "NMI_INTERRUPT_HOST", 0x66 },
2406 { "NMI_INTERRUPT_ACTION_PT", 0x7C },
2407 { "NMI_INTERRUPT_UNKNOWN", 0x84 },
2408 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
2409 { "ADVANCED_SYSASSERT", 0 },
2410 };
2411
2412 static const char *desc_lookup(u32 num)
2413 {
2414 int i;
2415 int max = ARRAY_SIZE(desc_lookup_text);
2416
2417 if (num < max)
2418 return desc_lookup_text[num];
2419
2420 max = ARRAY_SIZE(advanced_lookup) - 1;
2421 for (i = 0; i < max; i++) {
2422 if (advanced_lookup[i].num == num)
2423 break;;
2424 }
2425 return advanced_lookup[i].name;
2426 }
2427
2428 #define ERROR_START_OFFSET (1 * sizeof(u32))
2429 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
2430
2431 void iwl_dump_nic_error_log(struct iwl_priv *priv)
2432 {
2433 u32 data2, line;
2434 u32 desc, time, count, base, data1;
2435 u32 blink1, blink2, ilink1, ilink2;
2436 u32 pc, hcmd;
2437
2438 if (priv->ucode_type == UCODE_INIT) {
2439 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
2440 if (!base)
2441 base = priv->_agn.init_errlog_ptr;
2442 } else {
2443 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
2444 if (!base)
2445 base = priv->_agn.inst_errlog_ptr;
2446 }
2447
2448 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
2449 IWL_ERR(priv,
2450 "Not valid error log pointer 0x%08X for %s uCode\n",
2451 base, (priv->ucode_type == UCODE_INIT) ? "Init" : "RT");
2452 return;
2453 }
2454
2455 count = iwl_read_targ_mem(priv, base);
2456
2457 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
2458 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
2459 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
2460 priv->status, count);
2461 }
2462
2463 desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
2464 priv->isr_stats.err_code = desc;
2465 pc = iwl_read_targ_mem(priv, base + 2 * sizeof(u32));
2466 blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
2467 blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
2468 ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
2469 ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
2470 data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
2471 data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
2472 line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
2473 time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
2474 hcmd = iwl_read_targ_mem(priv, base + 22 * sizeof(u32));
2475
2476 trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, data2, line,
2477 blink1, blink2, ilink1, ilink2);
2478
2479 IWL_ERR(priv, "Desc Time "
2480 "data1 data2 line\n");
2481 IWL_ERR(priv, "%-28s (0x%04X) %010u 0x%08X 0x%08X %u\n",
2482 desc_lookup(desc), desc, time, data1, data2, line);
2483 IWL_ERR(priv, "pc blink1 blink2 ilink1 ilink2 hcmd\n");
2484 IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X 0x%05X 0x%05X\n",
2485 pc, blink1, blink2, ilink1, ilink2, hcmd);
2486 }
2487
2488 #define EVENT_START_OFFSET (4 * sizeof(u32))
2489
2490 /**
2491 * iwl_print_event_log - Dump error event log to syslog
2492 *
2493 */
2494 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
2495 u32 num_events, u32 mode,
2496 int pos, char **buf, size_t bufsz)
2497 {
2498 u32 i;
2499 u32 base; /* SRAM byte address of event log header */
2500 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
2501 u32 ptr; /* SRAM byte address of log data */
2502 u32 ev, time, data; /* event log data */
2503 unsigned long reg_flags;
2504
2505 if (num_events == 0)
2506 return pos;
2507
2508 if (priv->ucode_type == UCODE_INIT) {
2509 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
2510 if (!base)
2511 base = priv->_agn.init_evtlog_ptr;
2512 } else {
2513 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2514 if (!base)
2515 base = priv->_agn.inst_evtlog_ptr;
2516 }
2517
2518 if (mode == 0)
2519 event_size = 2 * sizeof(u32);
2520 else
2521 event_size = 3 * sizeof(u32);
2522
2523 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
2524
2525 /* Make sure device is powered up for SRAM reads */
2526 spin_lock_irqsave(&priv->reg_lock, reg_flags);
2527 iwl_grab_nic_access(priv);
2528
2529 /* Set starting address; reads will auto-increment */
2530 _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
2531 rmb();
2532
2533 /* "time" is actually "data" for mode 0 (no timestamp).
2534 * place event id # at far right for easier visual parsing. */
2535 for (i = 0; i < num_events; i++) {
2536 ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2537 time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2538 if (mode == 0) {
2539 /* data, ev */
2540 if (bufsz) {
2541 pos += scnprintf(*buf + pos, bufsz - pos,
2542 "EVT_LOG:0x%08x:%04u\n",
2543 time, ev);
2544 } else {
2545 trace_iwlwifi_dev_ucode_event(priv, 0,
2546 time, ev);
2547 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
2548 time, ev);
2549 }
2550 } else {
2551 data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2552 if (bufsz) {
2553 pos += scnprintf(*buf + pos, bufsz - pos,
2554 "EVT_LOGT:%010u:0x%08x:%04u\n",
2555 time, data, ev);
2556 } else {
2557 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
2558 time, data, ev);
2559 trace_iwlwifi_dev_ucode_event(priv, time,
2560 data, ev);
2561 }
2562 }
2563 }
2564
2565 /* Allow device to power down */
2566 iwl_release_nic_access(priv);
2567 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
2568 return pos;
2569 }
2570
2571 /**
2572 * iwl_print_last_event_logs - Dump the newest # of event log to syslog
2573 */
2574 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
2575 u32 num_wraps, u32 next_entry,
2576 u32 size, u32 mode,
2577 int pos, char **buf, size_t bufsz)
2578 {
2579 /*
2580 * display the newest DEFAULT_LOG_ENTRIES entries
2581 * i.e the entries just before the next ont that uCode would fill.
2582 */
2583 if (num_wraps) {
2584 if (next_entry < size) {
2585 pos = iwl_print_event_log(priv,
2586 capacity - (size - next_entry),
2587 size - next_entry, mode,
2588 pos, buf, bufsz);
2589 pos = iwl_print_event_log(priv, 0,
2590 next_entry, mode,
2591 pos, buf, bufsz);
2592 } else
2593 pos = iwl_print_event_log(priv, next_entry - size,
2594 size, mode, pos, buf, bufsz);
2595 } else {
2596 if (next_entry < size) {
2597 pos = iwl_print_event_log(priv, 0, next_entry,
2598 mode, pos, buf, bufsz);
2599 } else {
2600 pos = iwl_print_event_log(priv, next_entry - size,
2601 size, mode, pos, buf, bufsz);
2602 }
2603 }
2604 return pos;
2605 }
2606
2607 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
2608
2609 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
2610 char **buf, bool display)
2611 {
2612 u32 base; /* SRAM byte address of event log header */
2613 u32 capacity; /* event log capacity in # entries */
2614 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
2615 u32 num_wraps; /* # times uCode wrapped to top of log */
2616 u32 next_entry; /* index of next entry to be written by uCode */
2617 u32 size; /* # entries that we'll print */
2618 u32 logsize;
2619 int pos = 0;
2620 size_t bufsz = 0;
2621
2622 if (priv->ucode_type == UCODE_INIT) {
2623 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
2624 logsize = priv->_agn.init_evtlog_size;
2625 if (!base)
2626 base = priv->_agn.init_evtlog_ptr;
2627 } else {
2628 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2629 logsize = priv->_agn.inst_evtlog_size;
2630 if (!base)
2631 base = priv->_agn.inst_evtlog_ptr;
2632 }
2633
2634 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
2635 IWL_ERR(priv,
2636 "Invalid event log pointer 0x%08X for %s uCode\n",
2637 base, (priv->ucode_type == UCODE_INIT) ? "Init" : "RT");
2638 return -EINVAL;
2639 }
2640
2641 /* event log header */
2642 capacity = iwl_read_targ_mem(priv, base);
2643 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
2644 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
2645 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
2646
2647 if (capacity > logsize) {
2648 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
2649 capacity, logsize);
2650 capacity = logsize;
2651 }
2652
2653 if (next_entry > logsize) {
2654 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
2655 next_entry, logsize);
2656 next_entry = logsize;
2657 }
2658
2659 size = num_wraps ? capacity : next_entry;
2660
2661 /* bail out if nothing in log */
2662 if (size == 0) {
2663 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
2664 return pos;
2665 }
2666
2667 /* enable/disable bt channel announcement */
2668 priv->bt_ch_announce = iwlagn_bt_ch_announce;
2669
2670 #ifdef CONFIG_IWLWIFI_DEBUG
2671 if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log)
2672 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2673 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2674 #else
2675 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2676 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2677 #endif
2678 IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
2679 size);
2680
2681 #ifdef CONFIG_IWLWIFI_DEBUG
2682 if (display) {
2683 if (full_log)
2684 bufsz = capacity * 48;
2685 else
2686 bufsz = size * 48;
2687 *buf = kmalloc(bufsz, GFP_KERNEL);
2688 if (!*buf)
2689 return -ENOMEM;
2690 }
2691 if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
2692 /*
2693 * if uCode has wrapped back to top of log,
2694 * start at the oldest entry,
2695 * i.e the next one that uCode would fill.
2696 */
2697 if (num_wraps)
2698 pos = iwl_print_event_log(priv, next_entry,
2699 capacity - next_entry, mode,
2700 pos, buf, bufsz);
2701 /* (then/else) start at top of log */
2702 pos = iwl_print_event_log(priv, 0,
2703 next_entry, mode, pos, buf, bufsz);
2704 } else
2705 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2706 next_entry, size, mode,
2707 pos, buf, bufsz);
2708 #else
2709 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2710 next_entry, size, mode,
2711 pos, buf, bufsz);
2712 #endif
2713 return pos;
2714 }
2715
2716 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
2717 {
2718 struct iwl_ct_kill_config cmd;
2719 struct iwl_ct_kill_throttling_config adv_cmd;
2720 unsigned long flags;
2721 int ret = 0;
2722
2723 spin_lock_irqsave(&priv->lock, flags);
2724 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2725 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
2726 spin_unlock_irqrestore(&priv->lock, flags);
2727 priv->thermal_throttle.ct_kill_toggle = false;
2728
2729 if (priv->cfg->base_params->support_ct_kill_exit) {
2730 adv_cmd.critical_temperature_enter =
2731 cpu_to_le32(priv->hw_params.ct_kill_threshold);
2732 adv_cmd.critical_temperature_exit =
2733 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
2734
2735 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2736 sizeof(adv_cmd), &adv_cmd);
2737 if (ret)
2738 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2739 else
2740 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2741 "succeeded, "
2742 "critical temperature enter is %d,"
2743 "exit is %d\n",
2744 priv->hw_params.ct_kill_threshold,
2745 priv->hw_params.ct_kill_exit_threshold);
2746 } else {
2747 cmd.critical_temperature_R =
2748 cpu_to_le32(priv->hw_params.ct_kill_threshold);
2749
2750 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2751 sizeof(cmd), &cmd);
2752 if (ret)
2753 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2754 else
2755 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2756 "succeeded, "
2757 "critical temperature is %d\n",
2758 priv->hw_params.ct_kill_threshold);
2759 }
2760 }
2761
2762 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
2763 {
2764 struct iwl_calib_cfg_cmd calib_cfg_cmd;
2765 struct iwl_host_cmd cmd = {
2766 .id = CALIBRATION_CFG_CMD,
2767 .len = sizeof(struct iwl_calib_cfg_cmd),
2768 .data = &calib_cfg_cmd,
2769 };
2770
2771 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
2772 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_INIT_CFG_ALL;
2773 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
2774
2775 return iwl_send_cmd(priv, &cmd);
2776 }
2777
2778
2779 /**
2780 * iwl_alive_start - called after REPLY_ALIVE notification received
2781 * from protocol/runtime uCode (initialization uCode's
2782 * Alive gets handled by iwl_init_alive_start()).
2783 */
2784 static void iwl_alive_start(struct iwl_priv *priv)
2785 {
2786 int ret = 0;
2787 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2788
2789 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2790
2791 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2792 /* We had an error bringing up the hardware, so take it
2793 * all the way back down so we can try again */
2794 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2795 goto restart;
2796 }
2797
2798 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2799 * This is a paranoid check, because we would not have gotten the
2800 * "runtime" alive if code weren't properly loaded. */
2801 if (iwl_verify_ucode(priv)) {
2802 /* Runtime instruction load was bad;
2803 * take it all the way back down so we can try again */
2804 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2805 goto restart;
2806 }
2807
2808 ret = priv->cfg->ops->lib->alive_notify(priv);
2809 if (ret) {
2810 IWL_WARN(priv,
2811 "Could not complete ALIVE transition [ntf]: %d\n", ret);
2812 goto restart;
2813 }
2814
2815
2816 /* After the ALIVE response, we can send host commands to the uCode */
2817 set_bit(STATUS_ALIVE, &priv->status);
2818
2819 if (priv->cfg->ops->lib->recover_from_tx_stall) {
2820 /* Enable timer to monitor the driver queues */
2821 mod_timer(&priv->monitor_recover,
2822 jiffies +
2823 msecs_to_jiffies(
2824 priv->cfg->base_params->monitor_recover_period));
2825 }
2826
2827 if (iwl_is_rfkill(priv))
2828 return;
2829
2830 /* download priority table before any calibration request */
2831 if (priv->cfg->bt_params &&
2832 priv->cfg->bt_params->advanced_bt_coexist) {
2833 /* Configure Bluetooth device coexistence support */
2834 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
2835 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
2836 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
2837 priv->cfg->ops->hcmd->send_bt_config(priv);
2838 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
2839 iwlagn_send_prio_tbl(priv);
2840
2841 /* FIXME: w/a to force change uCode BT state machine */
2842 iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
2843 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
2844 iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
2845 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
2846 }
2847 if (priv->hw_params.calib_rt_cfg)
2848 iwlagn_send_calib_cfg_rt(priv, priv->hw_params.calib_rt_cfg);
2849
2850 ieee80211_wake_queues(priv->hw);
2851
2852 priv->active_rate = IWL_RATES_MASK;
2853
2854 /* Configure Tx antenna selection based on H/W config */
2855 if (priv->cfg->ops->hcmd->set_tx_ant)
2856 priv->cfg->ops->hcmd->set_tx_ant(priv, priv->cfg->valid_tx_ant);
2857
2858 if (iwl_is_associated_ctx(ctx)) {
2859 struct iwl_rxon_cmd *active_rxon =
2860 (struct iwl_rxon_cmd *)&ctx->active;
2861 /* apply any changes in staging */
2862 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
2863 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2864 } else {
2865 struct iwl_rxon_context *tmp;
2866 /* Initialize our rx_config data */
2867 for_each_context(priv, tmp)
2868 iwl_connection_init_rx_config(priv, tmp);
2869
2870 if (priv->cfg->ops->hcmd->set_rxon_chain)
2871 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
2872 }
2873
2874 if (priv->cfg->bt_params &&
2875 !priv->cfg->bt_params->advanced_bt_coexist) {
2876 /* Configure Bluetooth device coexistence support */
2877 priv->cfg->ops->hcmd->send_bt_config(priv);
2878 }
2879
2880 iwl_reset_run_time_calib(priv);
2881
2882 /* Configure the adapter for unassociated operation */
2883 iwlcore_commit_rxon(priv, ctx);
2884
2885 /* At this point, the NIC is initialized and operational */
2886 iwl_rf_kill_ct_config(priv);
2887
2888 iwl_leds_init(priv);
2889
2890 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2891 set_bit(STATUS_READY, &priv->status);
2892 wake_up_interruptible(&priv->wait_command_queue);
2893
2894 iwl_power_update_mode(priv, true);
2895 IWL_DEBUG_INFO(priv, "Updated power mode\n");
2896
2897
2898 return;
2899
2900 restart:
2901 queue_work(priv->workqueue, &priv->restart);
2902 }
2903
2904 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2905
2906 static void __iwl_down(struct iwl_priv *priv)
2907 {
2908 unsigned long flags;
2909 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2910
2911 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2912
2913 iwl_scan_cancel_timeout(priv, 200);
2914
2915 exit_pending = test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
2916
2917 /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
2918 * to prevent rearm timer */
2919 if (priv->cfg->ops->lib->recover_from_tx_stall)
2920 del_timer_sync(&priv->monitor_recover);
2921
2922 iwl_clear_ucode_stations(priv, NULL);
2923 iwl_dealloc_bcast_stations(priv);
2924 iwl_clear_driver_stations(priv);
2925
2926 /* reset BT coex data */
2927 priv->bt_status = 0;
2928 if (priv->cfg->bt_params)
2929 priv->bt_traffic_load =
2930 priv->cfg->bt_params->bt_init_traffic_load;
2931 else
2932 priv->bt_traffic_load = 0;
2933 priv->bt_sco_active = false;
2934 priv->bt_full_concurrent = false;
2935 priv->bt_ci_compliance = 0;
2936
2937 /* Unblock any waiting calls */
2938 wake_up_interruptible_all(&priv->wait_command_queue);
2939
2940 /* Wipe out the EXIT_PENDING status bit if we are not actually
2941 * exiting the module */
2942 if (!exit_pending)
2943 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2944
2945 /* stop and reset the on-board processor */
2946 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2947
2948 /* tell the device to stop sending interrupts */
2949 spin_lock_irqsave(&priv->lock, flags);
2950 iwl_disable_interrupts(priv);
2951 spin_unlock_irqrestore(&priv->lock, flags);
2952 iwl_synchronize_irq(priv);
2953
2954 if (priv->mac80211_registered)
2955 ieee80211_stop_queues(priv->hw);
2956
2957 /* If we have not previously called iwl_init() then
2958 * clear all bits but the RF Kill bit and return */
2959 if (!iwl_is_init(priv)) {
2960 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2961 STATUS_RF_KILL_HW |
2962 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2963 STATUS_GEO_CONFIGURED |
2964 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2965 STATUS_EXIT_PENDING;
2966 goto exit;
2967 }
2968
2969 /* ...otherwise clear out all the status bits but the RF Kill
2970 * bit and continue taking the NIC down. */
2971 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2972 STATUS_RF_KILL_HW |
2973 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2974 STATUS_GEO_CONFIGURED |
2975 test_bit(STATUS_FW_ERROR, &priv->status) <<
2976 STATUS_FW_ERROR |
2977 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2978 STATUS_EXIT_PENDING;
2979
2980 /* device going down, Stop using ICT table */
2981 iwl_disable_ict(priv);
2982
2983 iwlagn_txq_ctx_stop(priv);
2984 iwlagn_rxq_stop(priv);
2985
2986 /* Power-down device's busmaster DMA clocks */
2987 iwl_write_prph(priv, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT);
2988 udelay(5);
2989
2990 /* Make sure (redundant) we've released our request to stay awake */
2991 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2992
2993 /* Stop the device, and put it in low power state */
2994 iwl_apm_stop(priv);
2995
2996 exit:
2997 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2998
2999 dev_kfree_skb(priv->beacon_skb);
3000 priv->beacon_skb = NULL;
3001
3002 /* clear out any free frames */
3003 iwl_clear_free_frames(priv);
3004 }
3005
3006 static void iwl_down(struct iwl_priv *priv)
3007 {
3008 mutex_lock(&priv->mutex);
3009 __iwl_down(priv);
3010 mutex_unlock(&priv->mutex);
3011
3012 iwl_cancel_deferred_work(priv);
3013 }
3014
3015 #define HW_READY_TIMEOUT (50)
3016
3017 static int iwl_set_hw_ready(struct iwl_priv *priv)
3018 {
3019 int ret = 0;
3020
3021 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
3022 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY);
3023
3024 /* See if we got it */
3025 ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
3026 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
3027 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
3028 HW_READY_TIMEOUT);
3029 if (ret != -ETIMEDOUT)
3030 priv->hw_ready = true;
3031 else
3032 priv->hw_ready = false;
3033
3034 IWL_DEBUG_INFO(priv, "hardware %s\n",
3035 (priv->hw_ready == 1) ? "ready" : "not ready");
3036 return ret;
3037 }
3038
3039 static int iwl_prepare_card_hw(struct iwl_priv *priv)
3040 {
3041 int ret = 0;
3042
3043 IWL_DEBUG_INFO(priv, "iwl_prepare_card_hw enter\n");
3044
3045 ret = iwl_set_hw_ready(priv);
3046 if (priv->hw_ready)
3047 return ret;
3048
3049 /* If HW is not ready, prepare the conditions to check again */
3050 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
3051 CSR_HW_IF_CONFIG_REG_PREPARE);
3052
3053 ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
3054 ~CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE,
3055 CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, 150000);
3056
3057 /* HW should be ready by now, check again. */
3058 if (ret != -ETIMEDOUT)
3059 iwl_set_hw_ready(priv);
3060
3061 return ret;
3062 }
3063
3064 #define MAX_HW_RESTARTS 5
3065
3066 static int __iwl_up(struct iwl_priv *priv)
3067 {
3068 struct iwl_rxon_context *ctx;
3069 int i;
3070 int ret;
3071
3072 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3073 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
3074 return -EIO;
3075 }
3076
3077 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
3078 IWL_ERR(priv, "ucode not available for device bringup\n");
3079 return -EIO;
3080 }
3081
3082 for_each_context(priv, ctx) {
3083 ret = iwlagn_alloc_bcast_station(priv, ctx);
3084 if (ret) {
3085 iwl_dealloc_bcast_stations(priv);
3086 return ret;
3087 }
3088 }
3089
3090 iwl_prepare_card_hw(priv);
3091
3092 if (!priv->hw_ready) {
3093 IWL_WARN(priv, "Exit HW not ready\n");
3094 return -EIO;
3095 }
3096
3097 /* If platform's RF_KILL switch is NOT set to KILL */
3098 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3099 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3100 else
3101 set_bit(STATUS_RF_KILL_HW, &priv->status);
3102
3103 if (iwl_is_rfkill(priv)) {
3104 wiphy_rfkill_set_hw_state(priv->hw->wiphy, true);
3105
3106 iwl_enable_interrupts(priv);
3107 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
3108 return 0;
3109 }
3110
3111 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3112
3113 /* must be initialised before iwl_hw_nic_init */
3114 if (priv->valid_contexts != BIT(IWL_RXON_CTX_BSS))
3115 priv->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
3116 else
3117 priv->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
3118
3119 ret = iwlagn_hw_nic_init(priv);
3120 if (ret) {
3121 IWL_ERR(priv, "Unable to init nic\n");
3122 return ret;
3123 }
3124
3125 /* make sure rfkill handshake bits are cleared */
3126 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3127 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3128 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3129
3130 /* clear (again), then enable host interrupts */
3131 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3132 iwl_enable_interrupts(priv);
3133
3134 /* really make sure rfkill handshake bits are cleared */
3135 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3136 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3137
3138 /* Copy original ucode data image from disk into backup cache.
3139 * This will be used to initialize the on-board processor's
3140 * data SRAM for a clean start when the runtime program first loads. */
3141 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
3142 priv->ucode_data.len);
3143
3144 for (i = 0; i < MAX_HW_RESTARTS; i++) {
3145
3146 /* load bootstrap state machine,
3147 * load bootstrap program into processor's memory,
3148 * prepare to load the "initialize" uCode */
3149 ret = priv->cfg->ops->lib->load_ucode(priv);
3150
3151 if (ret) {
3152 IWL_ERR(priv, "Unable to set up bootstrap uCode: %d\n",
3153 ret);
3154 continue;
3155 }
3156
3157 /* start card; "initialize" will load runtime ucode */
3158 iwl_nic_start(priv);
3159
3160 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
3161
3162 return 0;
3163 }
3164
3165 set_bit(STATUS_EXIT_PENDING, &priv->status);
3166 __iwl_down(priv);
3167 clear_bit(STATUS_EXIT_PENDING, &priv->status);
3168
3169 /* tried to restart and config the device for as long as our
3170 * patience could withstand */
3171 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
3172 return -EIO;
3173 }
3174
3175
3176 /*****************************************************************************
3177 *
3178 * Workqueue callbacks
3179 *
3180 *****************************************************************************/
3181
3182 static void iwl_bg_init_alive_start(struct work_struct *data)
3183 {
3184 struct iwl_priv *priv =
3185 container_of(data, struct iwl_priv, init_alive_start.work);
3186
3187 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3188 return;
3189
3190 mutex_lock(&priv->mutex);
3191 priv->cfg->ops->lib->init_alive_start(priv);
3192 mutex_unlock(&priv->mutex);
3193 }
3194
3195 static void iwl_bg_alive_start(struct work_struct *data)
3196 {
3197 struct iwl_priv *priv =
3198 container_of(data, struct iwl_priv, alive_start.work);
3199
3200 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3201 return;
3202
3203 /* enable dram interrupt */
3204 iwl_reset_ict(priv);
3205
3206 mutex_lock(&priv->mutex);
3207 iwl_alive_start(priv);
3208 mutex_unlock(&priv->mutex);
3209 }
3210
3211 static void iwl_bg_run_time_calib_work(struct work_struct *work)
3212 {
3213 struct iwl_priv *priv = container_of(work, struct iwl_priv,
3214 run_time_calib_work);
3215
3216 mutex_lock(&priv->mutex);
3217
3218 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
3219 test_bit(STATUS_SCANNING, &priv->status)) {
3220 mutex_unlock(&priv->mutex);
3221 return;
3222 }
3223
3224 if (priv->start_calib) {
3225 if (priv->cfg->bt_params &&
3226 priv->cfg->bt_params->bt_statistics) {
3227 iwl_chain_noise_calibration(priv,
3228 (void *)&priv->_agn.statistics_bt);
3229 iwl_sensitivity_calibration(priv,
3230 (void *)&priv->_agn.statistics_bt);
3231 } else {
3232 iwl_chain_noise_calibration(priv,
3233 (void *)&priv->_agn.statistics);
3234 iwl_sensitivity_calibration(priv,
3235 (void *)&priv->_agn.statistics);
3236 }
3237 }
3238
3239 mutex_unlock(&priv->mutex);
3240 }
3241
3242 static void iwl_bg_restart(struct work_struct *data)
3243 {
3244 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3245
3246 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3247 return;
3248
3249 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
3250 struct iwl_rxon_context *ctx;
3251 bool bt_sco, bt_full_concurrent;
3252 u8 bt_ci_compliance;
3253 u8 bt_load;
3254 u8 bt_status;
3255
3256 mutex_lock(&priv->mutex);
3257 for_each_context(priv, ctx)
3258 ctx->vif = NULL;
3259 priv->is_open = 0;
3260
3261 /*
3262 * __iwl_down() will clear the BT status variables,
3263 * which is correct, but when we restart we really
3264 * want to keep them so restore them afterwards.
3265 *
3266 * The restart process will later pick them up and
3267 * re-configure the hw when we reconfigure the BT
3268 * command.
3269 */
3270 bt_sco = priv->bt_sco_active;
3271 bt_full_concurrent = priv->bt_full_concurrent;
3272 bt_ci_compliance = priv->bt_ci_compliance;
3273 bt_load = priv->bt_traffic_load;
3274 bt_status = priv->bt_status;
3275
3276 __iwl_down(priv);
3277
3278 priv->bt_sco_active = bt_sco;
3279 priv->bt_full_concurrent = bt_full_concurrent;
3280 priv->bt_ci_compliance = bt_ci_compliance;
3281 priv->bt_traffic_load = bt_load;
3282 priv->bt_status = bt_status;
3283
3284 mutex_unlock(&priv->mutex);
3285 iwl_cancel_deferred_work(priv);
3286 ieee80211_restart_hw(priv->hw);
3287 } else {
3288 iwl_down(priv);
3289
3290 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3291 return;
3292
3293 mutex_lock(&priv->mutex);
3294 __iwl_up(priv);
3295 mutex_unlock(&priv->mutex);
3296 }
3297 }
3298
3299 static void iwl_bg_rx_replenish(struct work_struct *data)
3300 {
3301 struct iwl_priv *priv =
3302 container_of(data, struct iwl_priv, rx_replenish);
3303
3304 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3305 return;
3306
3307 mutex_lock(&priv->mutex);
3308 iwlagn_rx_replenish(priv);
3309 mutex_unlock(&priv->mutex);
3310 }
3311
3312 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3313
3314 void iwl_post_associate(struct iwl_priv *priv, struct ieee80211_vif *vif)
3315 {
3316 struct iwl_rxon_context *ctx;
3317 struct ieee80211_conf *conf = NULL;
3318 int ret = 0;
3319
3320 if (!vif || !priv->is_open)
3321 return;
3322
3323 ctx = iwl_rxon_ctx_from_vif(vif);
3324
3325 if (vif->type == NL80211_IFTYPE_AP) {
3326 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
3327 return;
3328 }
3329
3330 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3331 return;
3332
3333 iwl_scan_cancel_timeout(priv, 200);
3334
3335 conf = ieee80211_get_hw_conf(priv->hw);
3336
3337 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3338 iwlcore_commit_rxon(priv, ctx);
3339
3340 ret = iwl_send_rxon_timing(priv, ctx);
3341 if (ret)
3342 IWL_WARN(priv, "RXON timing - "
3343 "Attempting to continue.\n");
3344
3345 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
3346
3347 iwl_set_rxon_ht(priv, &priv->current_ht_config);
3348
3349 if (priv->cfg->ops->hcmd->set_rxon_chain)
3350 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
3351
3352 ctx->staging.assoc_id = cpu_to_le16(vif->bss_conf.aid);
3353
3354 IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3355 vif->bss_conf.aid, vif->bss_conf.beacon_int);
3356
3357 if (vif->bss_conf.use_short_preamble)
3358 ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3359 else
3360 ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3361
3362 if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK) {
3363 if (vif->bss_conf.use_short_slot)
3364 ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
3365 else
3366 ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3367 }
3368
3369 iwlcore_commit_rxon(priv, ctx);
3370
3371 IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3372 vif->bss_conf.aid, ctx->active.bssid_addr);
3373
3374 switch (vif->type) {
3375 case NL80211_IFTYPE_STATION:
3376 break;
3377 case NL80211_IFTYPE_ADHOC:
3378 iwl_send_beacon_cmd(priv);
3379 break;
3380 default:
3381 IWL_ERR(priv, "%s Should not be called in %d mode\n",
3382 __func__, vif->type);
3383 break;
3384 }
3385
3386 /* the chain noise calibration will enabled PM upon completion
3387 * If chain noise has already been run, then we need to enable
3388 * power management here */
3389 if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
3390 iwl_power_update_mode(priv, false);
3391
3392 /* Enable Rx differential gain and sensitivity calibrations */
3393 iwl_chain_noise_reset(priv);
3394 priv->start_calib = 1;
3395
3396 }
3397
3398 /*****************************************************************************
3399 *
3400 * mac80211 entry point functions
3401 *
3402 *****************************************************************************/
3403
3404 #define UCODE_READY_TIMEOUT (4 * HZ)
3405
3406 /*
3407 * Not a mac80211 entry point function, but it fits in with all the
3408 * other mac80211 functions grouped here.
3409 */
3410 static int iwl_mac_setup_register(struct iwl_priv *priv,
3411 struct iwlagn_ucode_capabilities *capa)
3412 {
3413 int ret;
3414 struct ieee80211_hw *hw = priv->hw;
3415 struct iwl_rxon_context *ctx;
3416
3417 hw->rate_control_algorithm = "iwl-agn-rs";
3418
3419 /* Tell mac80211 our characteristics */
3420 hw->flags = IEEE80211_HW_SIGNAL_DBM |
3421 IEEE80211_HW_AMPDU_AGGREGATION |
3422 IEEE80211_HW_NEED_DTIM_PERIOD |
3423 IEEE80211_HW_SPECTRUM_MGMT;
3424
3425 if (!priv->cfg->base_params->broken_powersave)
3426 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
3427 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
3428
3429 if (priv->cfg->sku & IWL_SKU_N)
3430 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
3431 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
3432
3433 hw->sta_data_size = sizeof(struct iwl_station_priv);
3434 hw->vif_data_size = sizeof(struct iwl_vif_priv);
3435
3436 for_each_context(priv, ctx) {
3437 hw->wiphy->interface_modes |= ctx->interface_modes;
3438 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
3439 }
3440
3441 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
3442 WIPHY_FLAG_DISABLE_BEACON_HINTS;
3443
3444 /*
3445 * For now, disable PS by default because it affects
3446 * RX performance significantly.
3447 */
3448 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
3449
3450 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
3451 /* we create the 802.11 header and a zero-length SSID element */
3452 hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2;
3453
3454 /* Default value; 4 EDCA QOS priorities */
3455 hw->queues = 4;
3456
3457 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
3458
3459 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
3460 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3461 &priv->bands[IEEE80211_BAND_2GHZ];
3462 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
3463 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
3464 &priv->bands[IEEE80211_BAND_5GHZ];
3465
3466 ret = ieee80211_register_hw(priv->hw);
3467 if (ret) {
3468 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
3469 return ret;
3470 }
3471 priv->mac80211_registered = 1;
3472
3473 return 0;
3474 }
3475
3476
3477 static int iwl_mac_start(struct ieee80211_hw *hw)
3478 {
3479 struct iwl_priv *priv = hw->priv;
3480 int ret;
3481
3482 IWL_DEBUG_MAC80211(priv, "enter\n");
3483
3484 /* we should be verifying the device is ready to be opened */
3485 mutex_lock(&priv->mutex);
3486 ret = __iwl_up(priv);
3487 mutex_unlock(&priv->mutex);
3488
3489 if (ret)
3490 return ret;
3491
3492 if (iwl_is_rfkill(priv))
3493 goto out;
3494
3495 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
3496
3497 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
3498 * mac80211 will not be run successfully. */
3499 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3500 test_bit(STATUS_READY, &priv->status),
3501 UCODE_READY_TIMEOUT);
3502 if (!ret) {
3503 if (!test_bit(STATUS_READY, &priv->status)) {
3504 IWL_ERR(priv, "START_ALIVE timeout after %dms.\n",
3505 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3506 return -ETIMEDOUT;
3507 }
3508 }
3509
3510 iwl_led_start(priv);
3511
3512 out:
3513 priv->is_open = 1;
3514 IWL_DEBUG_MAC80211(priv, "leave\n");
3515 return 0;
3516 }
3517
3518 static void iwl_mac_stop(struct ieee80211_hw *hw)
3519 {
3520 struct iwl_priv *priv = hw->priv;
3521
3522 IWL_DEBUG_MAC80211(priv, "enter\n");
3523
3524 if (!priv->is_open)
3525 return;
3526
3527 priv->is_open = 0;
3528
3529 iwl_down(priv);
3530
3531 flush_workqueue(priv->workqueue);
3532
3533 /* enable interrupts again in order to receive rfkill changes */
3534 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3535 iwl_enable_interrupts(priv);
3536
3537 IWL_DEBUG_MAC80211(priv, "leave\n");
3538 }
3539
3540 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3541 {
3542 struct iwl_priv *priv = hw->priv;
3543
3544 IWL_DEBUG_MACDUMP(priv, "enter\n");
3545
3546 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3547 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3548
3549 if (iwlagn_tx_skb(priv, skb))
3550 dev_kfree_skb_any(skb);
3551
3552 IWL_DEBUG_MACDUMP(priv, "leave\n");
3553 return NETDEV_TX_OK;
3554 }
3555
3556 void iwl_config_ap(struct iwl_priv *priv, struct ieee80211_vif *vif)
3557 {
3558 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
3559 int ret = 0;
3560
3561 lockdep_assert_held(&priv->mutex);
3562
3563 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3564 return;
3565
3566 /* The following should be done only at AP bring up */
3567 if (!iwl_is_associated_ctx(ctx)) {
3568
3569 /* RXON - unassoc (to set timing command) */
3570 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3571 iwlcore_commit_rxon(priv, ctx);
3572
3573 /* RXON Timing */
3574 ret = iwl_send_rxon_timing(priv, ctx);
3575 if (ret)
3576 IWL_WARN(priv, "RXON timing failed - "
3577 "Attempting to continue.\n");
3578
3579 /* AP has all antennas */
3580 priv->chain_noise_data.active_chains =
3581 priv->hw_params.valid_rx_ant;
3582 iwl_set_rxon_ht(priv, &priv->current_ht_config);
3583 if (priv->cfg->ops->hcmd->set_rxon_chain)
3584 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
3585
3586 ctx->staging.assoc_id = 0;
3587
3588 if (vif->bss_conf.use_short_preamble)
3589 ctx->staging.flags |=
3590 RXON_FLG_SHORT_PREAMBLE_MSK;
3591 else
3592 ctx->staging.flags &=
3593 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3594
3595 if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK) {
3596 if (vif->bss_conf.use_short_slot)
3597 ctx->staging.flags |=
3598 RXON_FLG_SHORT_SLOT_MSK;
3599 else
3600 ctx->staging.flags &=
3601 ~RXON_FLG_SHORT_SLOT_MSK;
3602 }
3603 /* need to send beacon cmd before committing assoc RXON! */
3604 iwl_send_beacon_cmd(priv);
3605 /* restore RXON assoc */
3606 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
3607 iwlcore_commit_rxon(priv, ctx);
3608 }
3609 iwl_send_beacon_cmd(priv);
3610
3611 /* FIXME - we need to add code here to detect a totally new
3612 * configuration, reset the AP, unassoc, rxon timing, assoc,
3613 * clear sta table, add BCAST sta... */
3614 }
3615
3616 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
3617 struct ieee80211_vif *vif,
3618 struct ieee80211_key_conf *keyconf,
3619 struct ieee80211_sta *sta,
3620 u32 iv32, u16 *phase1key)
3621 {
3622
3623 struct iwl_priv *priv = hw->priv;
3624 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
3625
3626 IWL_DEBUG_MAC80211(priv, "enter\n");
3627
3628 iwl_update_tkip_key(priv, vif_priv->ctx, keyconf, sta,
3629 iv32, phase1key);
3630
3631 IWL_DEBUG_MAC80211(priv, "leave\n");
3632 }
3633
3634 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3635 struct ieee80211_vif *vif,
3636 struct ieee80211_sta *sta,
3637 struct ieee80211_key_conf *key)
3638 {
3639 struct iwl_priv *priv = hw->priv;
3640 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
3641 struct iwl_rxon_context *ctx = vif_priv->ctx;
3642 int ret;
3643 u8 sta_id;
3644 bool is_default_wep_key = false;
3645
3646 IWL_DEBUG_MAC80211(priv, "enter\n");
3647
3648 if (priv->cfg->mod_params->sw_crypto) {
3649 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
3650 return -EOPNOTSUPP;
3651 }
3652
3653 sta_id = iwl_sta_id_or_broadcast(priv, vif_priv->ctx, sta);
3654 if (sta_id == IWL_INVALID_STATION)
3655 return -EINVAL;
3656
3657 mutex_lock(&priv->mutex);
3658 iwl_scan_cancel_timeout(priv, 100);
3659
3660 /*
3661 * If we are getting WEP group key and we didn't receive any key mapping
3662 * so far, we are in legacy wep mode (group key only), otherwise we are
3663 * in 1X mode.
3664 * In legacy wep mode, we use another host command to the uCode.
3665 */
3666 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
3667 key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
3668 !sta) {
3669 if (cmd == SET_KEY)
3670 is_default_wep_key = !ctx->key_mapping_keys;
3671 else
3672 is_default_wep_key =
3673 (key->hw_key_idx == HW_KEY_DEFAULT);
3674 }
3675
3676 switch (cmd) {
3677 case SET_KEY:
3678 if (is_default_wep_key)
3679 ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
3680 else
3681 ret = iwl_set_dynamic_key(priv, vif_priv->ctx,
3682 key, sta_id);
3683
3684 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
3685 break;
3686 case DISABLE_KEY:
3687 if (is_default_wep_key)
3688 ret = iwl_remove_default_wep_key(priv, ctx, key);
3689 else
3690 ret = iwl_remove_dynamic_key(priv, ctx, key, sta_id);
3691
3692 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
3693 break;
3694 default:
3695 ret = -EINVAL;
3696 }
3697
3698 mutex_unlock(&priv->mutex);
3699 IWL_DEBUG_MAC80211(priv, "leave\n");
3700
3701 return ret;
3702 }
3703
3704 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
3705 struct ieee80211_vif *vif,
3706 enum ieee80211_ampdu_mlme_action action,
3707 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3708 {
3709 struct iwl_priv *priv = hw->priv;
3710 int ret = -EINVAL;
3711
3712 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
3713 sta->addr, tid);
3714
3715 if (!(priv->cfg->sku & IWL_SKU_N))
3716 return -EACCES;
3717
3718 mutex_lock(&priv->mutex);
3719
3720 switch (action) {
3721 case IEEE80211_AMPDU_RX_START:
3722 IWL_DEBUG_HT(priv, "start Rx\n");
3723 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
3724 break;
3725 case IEEE80211_AMPDU_RX_STOP:
3726 IWL_DEBUG_HT(priv, "stop Rx\n");
3727 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
3728 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3729 ret = 0;
3730 break;
3731 case IEEE80211_AMPDU_TX_START:
3732 IWL_DEBUG_HT(priv, "start Tx\n");
3733 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
3734 if (ret == 0) {
3735 priv->_agn.agg_tids_count++;
3736 IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
3737 priv->_agn.agg_tids_count);
3738 }
3739 break;
3740 case IEEE80211_AMPDU_TX_STOP:
3741 IWL_DEBUG_HT(priv, "stop Tx\n");
3742 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
3743 if ((ret == 0) && (priv->_agn.agg_tids_count > 0)) {
3744 priv->_agn.agg_tids_count--;
3745 IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
3746 priv->_agn.agg_tids_count);
3747 }
3748 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3749 ret = 0;
3750 if (priv->cfg->ht_params &&
3751 priv->cfg->ht_params->use_rts_for_aggregation) {
3752 struct iwl_station_priv *sta_priv =
3753 (void *) sta->drv_priv;
3754 /*
3755 * switch off RTS/CTS if it was previously enabled
3756 */
3757
3758 sta_priv->lq_sta.lq.general_params.flags &=
3759 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
3760 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
3761 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
3762 }
3763 break;
3764 case IEEE80211_AMPDU_TX_OPERATIONAL:
3765 if (priv->cfg->ht_params &&
3766 priv->cfg->ht_params->use_rts_for_aggregation) {
3767 struct iwl_station_priv *sta_priv =
3768 (void *) sta->drv_priv;
3769
3770 /*
3771 * switch to RTS/CTS if it is the prefer protection
3772 * method for HT traffic
3773 */
3774
3775 sta_priv->lq_sta.lq.general_params.flags |=
3776 LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
3777 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
3778 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
3779 }
3780 ret = 0;
3781 break;
3782 }
3783 mutex_unlock(&priv->mutex);
3784
3785 return ret;
3786 }
3787
3788 static void iwl_mac_sta_notify(struct ieee80211_hw *hw,
3789 struct ieee80211_vif *vif,
3790 enum sta_notify_cmd cmd,
3791 struct ieee80211_sta *sta)
3792 {
3793 struct iwl_priv *priv = hw->priv;
3794 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
3795 int sta_id;
3796
3797 switch (cmd) {
3798 case STA_NOTIFY_SLEEP:
3799 WARN_ON(!sta_priv->client);
3800 sta_priv->asleep = true;
3801 if (atomic_read(&sta_priv->pending_frames) > 0)
3802 ieee80211_sta_block_awake(hw, sta, true);
3803 break;
3804 case STA_NOTIFY_AWAKE:
3805 WARN_ON(!sta_priv->client);
3806 if (!sta_priv->asleep)
3807 break;
3808 sta_priv->asleep = false;
3809 sta_id = iwl_sta_id(sta);
3810 if (sta_id != IWL_INVALID_STATION)
3811 iwl_sta_modify_ps_wake(priv, sta_id);
3812 break;
3813 default:
3814 break;
3815 }
3816 }
3817
3818 static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
3819 struct ieee80211_vif *vif,
3820 struct ieee80211_sta *sta)
3821 {
3822 struct iwl_priv *priv = hw->priv;
3823 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
3824 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
3825 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
3826 int ret;
3827 u8 sta_id;
3828
3829 IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
3830 sta->addr);
3831 mutex_lock(&priv->mutex);
3832 IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
3833 sta->addr);
3834 sta_priv->common.sta_id = IWL_INVALID_STATION;
3835
3836 atomic_set(&sta_priv->pending_frames, 0);
3837 if (vif->type == NL80211_IFTYPE_AP)
3838 sta_priv->client = true;
3839
3840 ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
3841 is_ap, sta, &sta_id);
3842 if (ret) {
3843 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
3844 sta->addr, ret);
3845 /* Should we return success if return code is EEXIST ? */
3846 mutex_unlock(&priv->mutex);
3847 return ret;
3848 }
3849
3850 sta_priv->common.sta_id = sta_id;
3851
3852 /* Initialize rate scaling */
3853 IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
3854 sta->addr);
3855 iwl_rs_rate_init(priv, sta, sta_id);
3856 mutex_unlock(&priv->mutex);
3857
3858 return 0;
3859 }
3860
3861 static void iwl_mac_channel_switch(struct ieee80211_hw *hw,
3862 struct ieee80211_channel_switch *ch_switch)
3863 {
3864 struct iwl_priv *priv = hw->priv;
3865 const struct iwl_channel_info *ch_info;
3866 struct ieee80211_conf *conf = &hw->conf;
3867 struct ieee80211_channel *channel = ch_switch->channel;
3868 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
3869 /*
3870 * MULTI-FIXME
3871 * When we add support for multiple interfaces, we need to
3872 * revisit this. The channel switch command in the device
3873 * only affects the BSS context, but what does that really
3874 * mean? And what if we get a CSA on the second interface?
3875 * This needs a lot of work.
3876 */
3877 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
3878 u16 ch;
3879 unsigned long flags = 0;
3880
3881 IWL_DEBUG_MAC80211(priv, "enter\n");
3882
3883 if (iwl_is_rfkill(priv))
3884 goto out_exit;
3885
3886 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
3887 test_bit(STATUS_SCANNING, &priv->status))
3888 goto out_exit;
3889
3890 if (!iwl_is_associated_ctx(ctx))
3891 goto out_exit;
3892
3893 /* channel switch in progress */
3894 if (priv->switch_rxon.switch_in_progress == true)
3895 goto out_exit;
3896
3897 mutex_lock(&priv->mutex);
3898 if (priv->cfg->ops->lib->set_channel_switch) {
3899
3900 ch = channel->hw_value;
3901 if (le16_to_cpu(ctx->active.channel) != ch) {
3902 ch_info = iwl_get_channel_info(priv,
3903 channel->band,
3904 ch);
3905 if (!is_channel_valid(ch_info)) {
3906 IWL_DEBUG_MAC80211(priv, "invalid channel\n");
3907 goto out;
3908 }
3909 spin_lock_irqsave(&priv->lock, flags);
3910
3911 priv->current_ht_config.smps = conf->smps_mode;
3912
3913 /* Configure HT40 channels */
3914 ctx->ht.enabled = conf_is_ht(conf);
3915 if (ctx->ht.enabled) {
3916 if (conf_is_ht40_minus(conf)) {
3917 ctx->ht.extension_chan_offset =
3918 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3919 ctx->ht.is_40mhz = true;
3920 } else if (conf_is_ht40_plus(conf)) {
3921 ctx->ht.extension_chan_offset =
3922 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3923 ctx->ht.is_40mhz = true;
3924 } else {
3925 ctx->ht.extension_chan_offset =
3926 IEEE80211_HT_PARAM_CHA_SEC_NONE;
3927 ctx->ht.is_40mhz = false;
3928 }
3929 } else
3930 ctx->ht.is_40mhz = false;
3931
3932 if ((le16_to_cpu(ctx->staging.channel) != ch))
3933 ctx->staging.flags = 0;
3934
3935 iwl_set_rxon_channel(priv, channel, ctx);
3936 iwl_set_rxon_ht(priv, ht_conf);
3937 iwl_set_flags_for_band(priv, ctx, channel->band,
3938 ctx->vif);
3939 spin_unlock_irqrestore(&priv->lock, flags);
3940
3941 iwl_set_rate(priv);
3942 /*
3943 * at this point, staging_rxon has the
3944 * configuration for channel switch
3945 */
3946 if (priv->cfg->ops->lib->set_channel_switch(priv,
3947 ch_switch))
3948 priv->switch_rxon.switch_in_progress = false;
3949 }
3950 }
3951 out:
3952 mutex_unlock(&priv->mutex);
3953 out_exit:
3954 if (!priv->switch_rxon.switch_in_progress)
3955 ieee80211_chswitch_done(ctx->vif, false);
3956 IWL_DEBUG_MAC80211(priv, "leave\n");
3957 }
3958
3959 static void iwlagn_configure_filter(struct ieee80211_hw *hw,
3960 unsigned int changed_flags,
3961 unsigned int *total_flags,
3962 u64 multicast)
3963 {
3964 struct iwl_priv *priv = hw->priv;
3965 __le32 filter_or = 0, filter_nand = 0;
3966 struct iwl_rxon_context *ctx;
3967
3968 #define CHK(test, flag) do { \
3969 if (*total_flags & (test)) \
3970 filter_or |= (flag); \
3971 else \
3972 filter_nand |= (flag); \
3973 } while (0)
3974
3975 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
3976 changed_flags, *total_flags);
3977
3978 CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
3979 CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK);
3980 CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
3981
3982 #undef CHK
3983
3984 mutex_lock(&priv->mutex);
3985
3986 for_each_context(priv, ctx) {
3987 ctx->staging.filter_flags &= ~filter_nand;
3988 ctx->staging.filter_flags |= filter_or;
3989 iwlcore_commit_rxon(priv, ctx);
3990 }
3991
3992 mutex_unlock(&priv->mutex);
3993
3994 /*
3995 * Receiving all multicast frames is always enabled by the
3996 * default flags setup in iwl_connection_init_rx_config()
3997 * since we currently do not support programming multicast
3998 * filters into the device.
3999 */
4000 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
4001 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
4002 }
4003
4004 static void iwl_mac_flush(struct ieee80211_hw *hw, bool drop)
4005 {
4006 struct iwl_priv *priv = hw->priv;
4007
4008 mutex_lock(&priv->mutex);
4009 IWL_DEBUG_MAC80211(priv, "enter\n");
4010
4011 /* do not support "flush" */
4012 if (!priv->cfg->ops->lib->txfifo_flush)
4013 goto done;
4014
4015 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4016 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
4017 goto done;
4018 }
4019 if (iwl_is_rfkill(priv)) {
4020 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
4021 goto done;
4022 }
4023
4024 /*
4025 * mac80211 will not push any more frames for transmit
4026 * until the flush is completed
4027 */
4028 if (drop) {
4029 IWL_DEBUG_MAC80211(priv, "send flush command\n");
4030 if (priv->cfg->ops->lib->txfifo_flush(priv, IWL_DROP_ALL)) {
4031 IWL_ERR(priv, "flush request fail\n");
4032 goto done;
4033 }
4034 }
4035 IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
4036 iwlagn_wait_tx_queue_empty(priv);
4037 done:
4038 mutex_unlock(&priv->mutex);
4039 IWL_DEBUG_MAC80211(priv, "leave\n");
4040 }
4041
4042 /*****************************************************************************
4043 *
4044 * driver setup and teardown
4045 *
4046 *****************************************************************************/
4047
4048 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4049 {
4050 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
4051
4052 init_waitqueue_head(&priv->wait_command_queue);
4053
4054 INIT_WORK(&priv->restart, iwl_bg_restart);
4055 INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
4056 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
4057 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4058 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
4059 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
4060 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
4061 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4062 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4063
4064 iwl_setup_scan_deferred_work(priv);
4065
4066 if (priv->cfg->ops->lib->setup_deferred_work)
4067 priv->cfg->ops->lib->setup_deferred_work(priv);
4068
4069 init_timer(&priv->statistics_periodic);
4070 priv->statistics_periodic.data = (unsigned long)priv;
4071 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
4072
4073 init_timer(&priv->ucode_trace);
4074 priv->ucode_trace.data = (unsigned long)priv;
4075 priv->ucode_trace.function = iwl_bg_ucode_trace;
4076
4077 if (priv->cfg->ops->lib->recover_from_tx_stall) {
4078 init_timer(&priv->monitor_recover);
4079 priv->monitor_recover.data = (unsigned long)priv;
4080 priv->monitor_recover.function =
4081 priv->cfg->ops->lib->recover_from_tx_stall;
4082 }
4083
4084 if (!priv->cfg->base_params->use_isr_legacy)
4085 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4086 iwl_irq_tasklet, (unsigned long)priv);
4087 else
4088 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4089 iwl_irq_tasklet_legacy, (unsigned long)priv);
4090 }
4091
4092 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4093 {
4094 if (priv->cfg->ops->lib->cancel_deferred_work)
4095 priv->cfg->ops->lib->cancel_deferred_work(priv);
4096
4097 cancel_delayed_work_sync(&priv->init_alive_start);
4098 cancel_delayed_work(&priv->alive_start);
4099 cancel_work_sync(&priv->run_time_calib_work);
4100 cancel_work_sync(&priv->beacon_update);
4101
4102 iwl_cancel_scan_deferred_work(priv);
4103
4104 cancel_work_sync(&priv->bt_full_concurrency);
4105 cancel_work_sync(&priv->bt_runtime_config);
4106
4107 del_timer_sync(&priv->statistics_periodic);
4108 del_timer_sync(&priv->ucode_trace);
4109 }
4110
4111 static void iwl_init_hw_rates(struct iwl_priv *priv,
4112 struct ieee80211_rate *rates)
4113 {
4114 int i;
4115
4116 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
4117 rates[i].bitrate = iwl_rates[i].ieee * 5;
4118 rates[i].hw_value = i; /* Rate scaling will work on indexes */
4119 rates[i].hw_value_short = i;
4120 rates[i].flags = 0;
4121 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
4122 /*
4123 * If CCK != 1M then set short preamble rate flag.
4124 */
4125 rates[i].flags |=
4126 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
4127 0 : IEEE80211_RATE_SHORT_PREAMBLE;
4128 }
4129 }
4130 }
4131
4132 static int iwl_init_drv(struct iwl_priv *priv)
4133 {
4134 int ret;
4135
4136 spin_lock_init(&priv->sta_lock);
4137 spin_lock_init(&priv->hcmd_lock);
4138
4139 INIT_LIST_HEAD(&priv->free_frames);
4140
4141 mutex_init(&priv->mutex);
4142 mutex_init(&priv->sync_cmd_mutex);
4143
4144 priv->ieee_channels = NULL;
4145 priv->ieee_rates = NULL;
4146 priv->band = IEEE80211_BAND_2GHZ;
4147
4148 priv->iw_mode = NL80211_IFTYPE_STATION;
4149 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
4150 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
4151 priv->_agn.agg_tids_count = 0;
4152
4153 /* initialize force reset */
4154 priv->force_reset[IWL_RF_RESET].reset_duration =
4155 IWL_DELAY_NEXT_FORCE_RF_RESET;
4156 priv->force_reset[IWL_FW_RESET].reset_duration =
4157 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
4158
4159 /* Choose which receivers/antennas to use */
4160 if (priv->cfg->ops->hcmd->set_rxon_chain)
4161 priv->cfg->ops->hcmd->set_rxon_chain(priv,
4162 &priv->contexts[IWL_RXON_CTX_BSS]);
4163
4164 iwl_init_scan_params(priv);
4165
4166 /* init bt coex */
4167 if (priv->cfg->bt_params &&
4168 priv->cfg->bt_params->advanced_bt_coexist) {
4169 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
4170 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
4171 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
4172 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
4173 priv->bt_duration = BT_DURATION_LIMIT_DEF;
4174 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
4175 priv->dynamic_agg_thresh = BT_AGG_THRESHOLD_DEF;
4176 }
4177
4178 /* Set the tx_power_user_lmt to the lowest power level
4179 * this value will get overwritten by channel max power avg
4180 * from eeprom */
4181 priv->tx_power_user_lmt = IWLAGN_TX_POWER_TARGET_POWER_MIN;
4182
4183 ret = iwl_init_channel_map(priv);
4184 if (ret) {
4185 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
4186 goto err;
4187 }
4188
4189 ret = iwlcore_init_geos(priv);
4190 if (ret) {
4191 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
4192 goto err_free_channel_map;
4193 }
4194 iwl_init_hw_rates(priv, priv->ieee_rates);
4195
4196 return 0;
4197
4198 err_free_channel_map:
4199 iwl_free_channel_map(priv);
4200 err:
4201 return ret;
4202 }
4203
4204 static void iwl_uninit_drv(struct iwl_priv *priv)
4205 {
4206 iwl_calib_free_results(priv);
4207 iwlcore_free_geos(priv);
4208 iwl_free_channel_map(priv);
4209 kfree(priv->scan_cmd);
4210 }
4211
4212 static struct ieee80211_ops iwl_hw_ops = {
4213 .tx = iwl_mac_tx,
4214 .start = iwl_mac_start,
4215 .stop = iwl_mac_stop,
4216 .add_interface = iwl_mac_add_interface,
4217 .remove_interface = iwl_mac_remove_interface,
4218 .config = iwl_mac_config,
4219 .configure_filter = iwlagn_configure_filter,
4220 .set_key = iwl_mac_set_key,
4221 .update_tkip_key = iwl_mac_update_tkip_key,
4222 .conf_tx = iwl_mac_conf_tx,
4223 .reset_tsf = iwl_mac_reset_tsf,
4224 .bss_info_changed = iwl_bss_info_changed,
4225 .ampdu_action = iwl_mac_ampdu_action,
4226 .hw_scan = iwl_mac_hw_scan,
4227 .sta_notify = iwl_mac_sta_notify,
4228 .sta_add = iwlagn_mac_sta_add,
4229 .sta_remove = iwl_mac_sta_remove,
4230 .channel_switch = iwl_mac_channel_switch,
4231 .flush = iwl_mac_flush,
4232 .tx_last_beacon = iwl_mac_tx_last_beacon,
4233 };
4234
4235 static void iwl_hw_detect(struct iwl_priv *priv)
4236 {
4237 priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
4238 priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
4239 pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
4240 IWL_DEBUG_INFO(priv, "HW Revision ID = 0x%X\n", priv->rev_id);
4241 }
4242
4243 static int iwl_set_hw_params(struct iwl_priv *priv)
4244 {
4245 priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
4246 priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
4247 if (priv->cfg->mod_params->amsdu_size_8K)
4248 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_8K);
4249 else
4250 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_4K);
4251
4252 priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
4253
4254 if (priv->cfg->mod_params->disable_11n)
4255 priv->cfg->sku &= ~IWL_SKU_N;
4256
4257 /* Device-specific setup */
4258 return priv->cfg->ops->lib->set_hw_params(priv);
4259 }
4260
4261 static const u8 iwlagn_bss_ac_to_fifo[] = {
4262 IWL_TX_FIFO_VO,
4263 IWL_TX_FIFO_VI,
4264 IWL_TX_FIFO_BE,
4265 IWL_TX_FIFO_BK,
4266 };
4267
4268 static const u8 iwlagn_bss_ac_to_queue[] = {
4269 0, 1, 2, 3,
4270 };
4271
4272 static const u8 iwlagn_pan_ac_to_fifo[] = {
4273 IWL_TX_FIFO_VO_IPAN,
4274 IWL_TX_FIFO_VI_IPAN,
4275 IWL_TX_FIFO_BE_IPAN,
4276 IWL_TX_FIFO_BK_IPAN,
4277 };
4278
4279 static const u8 iwlagn_pan_ac_to_queue[] = {
4280 7, 6, 5, 4,
4281 };
4282
4283 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4284 {
4285 int err = 0, i;
4286 struct iwl_priv *priv;
4287 struct ieee80211_hw *hw;
4288 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4289 unsigned long flags;
4290 u16 pci_cmd, num_mac;
4291
4292 /************************
4293 * 1. Allocating HW data
4294 ************************/
4295
4296 /* Disabling hardware scan means that mac80211 will perform scans
4297 * "the hard way", rather than using device's scan. */
4298 if (cfg->mod_params->disable_hw_scan) {
4299 dev_printk(KERN_DEBUG, &(pdev->dev),
4300 "sw scan support is deprecated\n");
4301 iwl_hw_ops.hw_scan = NULL;
4302 }
4303
4304 hw = iwl_alloc_all(cfg, &iwl_hw_ops);
4305 if (!hw) {
4306 err = -ENOMEM;
4307 goto out;
4308 }
4309 priv = hw->priv;
4310 /* At this point both hw and priv are allocated. */
4311
4312 /*
4313 * The default context is always valid,
4314 * more may be discovered when firmware
4315 * is loaded.
4316 */
4317 priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
4318
4319 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
4320 priv->contexts[i].ctxid = i;
4321
4322 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
4323 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
4324 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
4325 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
4326 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
4327 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
4328 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
4329 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
4330 priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo = iwlagn_bss_ac_to_fifo;
4331 priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue = iwlagn_bss_ac_to_queue;
4332 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
4333 BIT(NL80211_IFTYPE_ADHOC);
4334 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
4335 BIT(NL80211_IFTYPE_STATION);
4336 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
4337 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
4338 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
4339
4340 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
4341 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd = REPLY_WIPAN_RXON_TIMING;
4342 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd = REPLY_WIPAN_RXON_ASSOC;
4343 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
4344 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
4345 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
4346 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
4347 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
4348 priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo = iwlagn_pan_ac_to_fifo;
4349 priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue = iwlagn_pan_ac_to_queue;
4350 priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
4351 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
4352 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
4353 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
4354 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
4355 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
4356
4357 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
4358
4359 SET_IEEE80211_DEV(hw, &pdev->dev);
4360
4361 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
4362 priv->cfg = cfg;
4363 priv->pci_dev = pdev;
4364 priv->inta_mask = CSR_INI_SET_MASK;
4365
4366 /* is antenna coupling more than 35dB ? */
4367 priv->bt_ant_couple_ok =
4368 (iwlagn_ant_coupling > IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
4369 true : false;
4370
4371 /* enable/disable bt channel announcement */
4372 priv->bt_ch_announce = iwlagn_bt_ch_announce;
4373
4374 if (iwl_alloc_traffic_mem(priv))
4375 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
4376
4377 /**************************
4378 * 2. Initializing PCI bus
4379 **************************/
4380 pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 |
4381 PCIE_LINK_STATE_CLKPM);
4382
4383 if (pci_enable_device(pdev)) {
4384 err = -ENODEV;
4385 goto out_ieee80211_free_hw;
4386 }
4387
4388 pci_set_master(pdev);
4389
4390 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
4391 if (!err)
4392 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
4393 if (err) {
4394 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4395 if (!err)
4396 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
4397 /* both attempts failed: */
4398 if (err) {
4399 IWL_WARN(priv, "No suitable DMA available.\n");
4400 goto out_pci_disable_device;
4401 }
4402 }
4403
4404 err = pci_request_regions(pdev, DRV_NAME);
4405 if (err)
4406 goto out_pci_disable_device;
4407
4408 pci_set_drvdata(pdev, priv);
4409
4410
4411 /***********************
4412 * 3. Read REV register
4413 ***********************/
4414 priv->hw_base = pci_iomap(pdev, 0, 0);
4415 if (!priv->hw_base) {
4416 err = -ENODEV;
4417 goto out_pci_release_regions;
4418 }
4419
4420 IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
4421 (unsigned long long) pci_resource_len(pdev, 0));
4422 IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
4423
4424 /* these spin locks will be used in apm_ops.init and EEPROM access
4425 * we should init now
4426 */
4427 spin_lock_init(&priv->reg_lock);
4428 spin_lock_init(&priv->lock);
4429
4430 /*
4431 * stop and reset the on-board processor just in case it is in a
4432 * strange state ... like being left stranded by a primary kernel
4433 * and this is now the kdump kernel trying to start up
4434 */
4435 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
4436
4437 iwl_hw_detect(priv);
4438 IWL_INFO(priv, "Detected %s, REV=0x%X\n",
4439 priv->cfg->name, priv->hw_rev);
4440
4441 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4442 * PCI Tx retries from interfering with C3 CPU state */
4443 pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
4444
4445 iwl_prepare_card_hw(priv);
4446 if (!priv->hw_ready) {
4447 IWL_WARN(priv, "Failed, HW not ready\n");
4448 goto out_iounmap;
4449 }
4450
4451 /*****************
4452 * 4. Read EEPROM
4453 *****************/
4454 /* Read the EEPROM */
4455 err = iwl_eeprom_init(priv);
4456 if (err) {
4457 IWL_ERR(priv, "Unable to init EEPROM\n");
4458 goto out_iounmap;
4459 }
4460 err = iwl_eeprom_check_version(priv);
4461 if (err)
4462 goto out_free_eeprom;
4463
4464 /* extract MAC Address */
4465 iwl_eeprom_get_mac(priv, priv->addresses[0].addr);
4466 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
4467 priv->hw->wiphy->addresses = priv->addresses;
4468 priv->hw->wiphy->n_addresses = 1;
4469 num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS);
4470 if (num_mac > 1) {
4471 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
4472 ETH_ALEN);
4473 priv->addresses[1].addr[5]++;
4474 priv->hw->wiphy->n_addresses++;
4475 }
4476
4477 /************************
4478 * 5. Setup HW constants
4479 ************************/
4480 if (iwl_set_hw_params(priv)) {
4481 IWL_ERR(priv, "failed to set hw parameters\n");
4482 goto out_free_eeprom;
4483 }
4484
4485 /*******************
4486 * 6. Setup priv
4487 *******************/
4488
4489 err = iwl_init_drv(priv);
4490 if (err)
4491 goto out_free_eeprom;
4492 /* At this point both hw and priv are initialized. */
4493
4494 /********************
4495 * 7. Setup services
4496 ********************/
4497 spin_lock_irqsave(&priv->lock, flags);
4498 iwl_disable_interrupts(priv);
4499 spin_unlock_irqrestore(&priv->lock, flags);
4500
4501 pci_enable_msi(priv->pci_dev);
4502
4503 iwl_alloc_isr_ict(priv);
4504 err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr,
4505 IRQF_SHARED, DRV_NAME, priv);
4506 if (err) {
4507 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
4508 goto out_disable_msi;
4509 }
4510
4511 iwl_setup_deferred_work(priv);
4512 iwl_setup_rx_handlers(priv);
4513
4514 /*********************************************
4515 * 8. Enable interrupts and read RFKILL state
4516 *********************************************/
4517
4518 /* enable interrupts if needed: hw bug w/a */
4519 pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
4520 if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
4521 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
4522 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
4523 }
4524
4525 iwl_enable_interrupts(priv);
4526
4527 /* If platform's RF_KILL switch is NOT set to KILL */
4528 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
4529 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4530 else
4531 set_bit(STATUS_RF_KILL_HW, &priv->status);
4532
4533 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
4534 test_bit(STATUS_RF_KILL_HW, &priv->status));
4535
4536 iwl_power_initialize(priv);
4537 iwl_tt_initialize(priv);
4538
4539 init_completion(&priv->_agn.firmware_loading_complete);
4540
4541 err = iwl_request_firmware(priv, true);
4542 if (err)
4543 goto out_destroy_workqueue;
4544
4545 return 0;
4546
4547 out_destroy_workqueue:
4548 destroy_workqueue(priv->workqueue);
4549 priv->workqueue = NULL;
4550 free_irq(priv->pci_dev->irq, priv);
4551 iwl_free_isr_ict(priv);
4552 out_disable_msi:
4553 pci_disable_msi(priv->pci_dev);
4554 iwl_uninit_drv(priv);
4555 out_free_eeprom:
4556 iwl_eeprom_free(priv);
4557 out_iounmap:
4558 pci_iounmap(pdev, priv->hw_base);
4559 out_pci_release_regions:
4560 pci_set_drvdata(pdev, NULL);
4561 pci_release_regions(pdev);
4562 out_pci_disable_device:
4563 pci_disable_device(pdev);
4564 out_ieee80211_free_hw:
4565 iwl_free_traffic_mem(priv);
4566 ieee80211_free_hw(priv->hw);
4567 out:
4568 return err;
4569 }
4570
4571 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
4572 {
4573 struct iwl_priv *priv = pci_get_drvdata(pdev);
4574 unsigned long flags;
4575
4576 if (!priv)
4577 return;
4578
4579 wait_for_completion(&priv->_agn.firmware_loading_complete);
4580
4581 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
4582
4583 iwl_dbgfs_unregister(priv);
4584 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
4585
4586 /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
4587 * to be called and iwl_down since we are removing the device
4588 * we need to set STATUS_EXIT_PENDING bit.
4589 */
4590 set_bit(STATUS_EXIT_PENDING, &priv->status);
4591 if (priv->mac80211_registered) {
4592 ieee80211_unregister_hw(priv->hw);
4593 priv->mac80211_registered = 0;
4594 } else {
4595 iwl_down(priv);
4596 }
4597
4598 /*
4599 * Make sure device is reset to low power before unloading driver.
4600 * This may be redundant with iwl_down(), but there are paths to
4601 * run iwl_down() without calling apm_ops.stop(), and there are
4602 * paths to avoid running iwl_down() at all before leaving driver.
4603 * This (inexpensive) call *makes sure* device is reset.
4604 */
4605 iwl_apm_stop(priv);
4606
4607 iwl_tt_exit(priv);
4608
4609 /* make sure we flush any pending irq or
4610 * tasklet for the driver
4611 */
4612 spin_lock_irqsave(&priv->lock, flags);
4613 iwl_disable_interrupts(priv);
4614 spin_unlock_irqrestore(&priv->lock, flags);
4615
4616 iwl_synchronize_irq(priv);
4617
4618 iwl_dealloc_ucode_pci(priv);
4619
4620 if (priv->rxq.bd)
4621 iwlagn_rx_queue_free(priv, &priv->rxq);
4622 iwlagn_hw_txq_ctx_free(priv);
4623
4624 iwl_eeprom_free(priv);
4625
4626
4627 /*netif_stop_queue(dev); */
4628 flush_workqueue(priv->workqueue);
4629
4630 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
4631 * priv->workqueue... so we can't take down the workqueue
4632 * until now... */
4633 destroy_workqueue(priv->workqueue);
4634 priv->workqueue = NULL;
4635 iwl_free_traffic_mem(priv);
4636
4637 free_irq(priv->pci_dev->irq, priv);
4638 pci_disable_msi(priv->pci_dev);
4639 pci_iounmap(pdev, priv->hw_base);
4640 pci_release_regions(pdev);
4641 pci_disable_device(pdev);
4642 pci_set_drvdata(pdev, NULL);
4643
4644 iwl_uninit_drv(priv);
4645
4646 iwl_free_isr_ict(priv);
4647
4648 dev_kfree_skb(priv->beacon_skb);
4649
4650 ieee80211_free_hw(priv->hw);
4651 }
4652
4653
4654 /*****************************************************************************
4655 *
4656 * driver and module entry point
4657 *
4658 *****************************************************************************/
4659
4660 /* Hardware specific file defines the PCI IDs table for that hardware module */
4661 static DEFINE_PCI_DEVICE_TABLE(iwl_hw_card_ids) = {
4662 #ifdef CONFIG_IWL4965
4663 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4664 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4665 #endif /* CONFIG_IWL4965 */
4666 #ifdef CONFIG_IWL5000
4667 /* 5100 Series WiFi */
4668 {IWL_PCI_DEVICE(0x4232, 0x1201, iwl5100_agn_cfg)}, /* Mini Card */
4669 {IWL_PCI_DEVICE(0x4232, 0x1301, iwl5100_agn_cfg)}, /* Half Mini Card */
4670 {IWL_PCI_DEVICE(0x4232, 0x1204, iwl5100_agn_cfg)}, /* Mini Card */
4671 {IWL_PCI_DEVICE(0x4232, 0x1304, iwl5100_agn_cfg)}, /* Half Mini Card */
4672 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bgn_cfg)}, /* Mini Card */
4673 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bgn_cfg)}, /* Half Mini Card */
4674 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)}, /* Mini Card */
4675 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)}, /* Half Mini Card */
4676 {IWL_PCI_DEVICE(0x4232, 0x1221, iwl5100_agn_cfg)}, /* Mini Card */
4677 {IWL_PCI_DEVICE(0x4232, 0x1321, iwl5100_agn_cfg)}, /* Half Mini Card */
4678 {IWL_PCI_DEVICE(0x4232, 0x1224, iwl5100_agn_cfg)}, /* Mini Card */
4679 {IWL_PCI_DEVICE(0x4232, 0x1324, iwl5100_agn_cfg)}, /* Half Mini Card */
4680 {IWL_PCI_DEVICE(0x4232, 0x1225, iwl5100_bgn_cfg)}, /* Mini Card */
4681 {IWL_PCI_DEVICE(0x4232, 0x1325, iwl5100_bgn_cfg)}, /* Half Mini Card */
4682 {IWL_PCI_DEVICE(0x4232, 0x1226, iwl5100_abg_cfg)}, /* Mini Card */
4683 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)}, /* Half Mini Card */
4684 {IWL_PCI_DEVICE(0x4237, 0x1211, iwl5100_agn_cfg)}, /* Mini Card */
4685 {IWL_PCI_DEVICE(0x4237, 0x1311, iwl5100_agn_cfg)}, /* Half Mini Card */
4686 {IWL_PCI_DEVICE(0x4237, 0x1214, iwl5100_agn_cfg)}, /* Mini Card */
4687 {IWL_PCI_DEVICE(0x4237, 0x1314, iwl5100_agn_cfg)}, /* Half Mini Card */
4688 {IWL_PCI_DEVICE(0x4237, 0x1215, iwl5100_bgn_cfg)}, /* Mini Card */
4689 {IWL_PCI_DEVICE(0x4237, 0x1315, iwl5100_bgn_cfg)}, /* Half Mini Card */
4690 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)}, /* Mini Card */
4691 {IWL_PCI_DEVICE(0x4237, 0x1316, iwl5100_abg_cfg)}, /* Half Mini Card */
4692
4693 /* 5300 Series WiFi */
4694 {IWL_PCI_DEVICE(0x4235, 0x1021, iwl5300_agn_cfg)}, /* Mini Card */
4695 {IWL_PCI_DEVICE(0x4235, 0x1121, iwl5300_agn_cfg)}, /* Half Mini Card */
4696 {IWL_PCI_DEVICE(0x4235, 0x1024, iwl5300_agn_cfg)}, /* Mini Card */
4697 {IWL_PCI_DEVICE(0x4235, 0x1124, iwl5300_agn_cfg)}, /* Half Mini Card */
4698 {IWL_PCI_DEVICE(0x4235, 0x1001, iwl5300_agn_cfg)}, /* Mini Card */
4699 {IWL_PCI_DEVICE(0x4235, 0x1101, iwl5300_agn_cfg)}, /* Half Mini Card */
4700 {IWL_PCI_DEVICE(0x4235, 0x1004, iwl5300_agn_cfg)}, /* Mini Card */
4701 {IWL_PCI_DEVICE(0x4235, 0x1104, iwl5300_agn_cfg)}, /* Half Mini Card */
4702 {IWL_PCI_DEVICE(0x4236, 0x1011, iwl5300_agn_cfg)}, /* Mini Card */
4703 {IWL_PCI_DEVICE(0x4236, 0x1111, iwl5300_agn_cfg)}, /* Half Mini Card */
4704 {IWL_PCI_DEVICE(0x4236, 0x1014, iwl5300_agn_cfg)}, /* Mini Card */
4705 {IWL_PCI_DEVICE(0x4236, 0x1114, iwl5300_agn_cfg)}, /* Half Mini Card */
4706
4707 /* 5350 Series WiFi/WiMax */
4708 {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)}, /* Mini Card */
4709 {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)}, /* Mini Card */
4710 {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)}, /* Mini Card */
4711
4712 /* 5150 Series Wifi/WiMax */
4713 {IWL_PCI_DEVICE(0x423C, 0x1201, iwl5150_agn_cfg)}, /* Mini Card */
4714 {IWL_PCI_DEVICE(0x423C, 0x1301, iwl5150_agn_cfg)}, /* Half Mini Card */
4715 {IWL_PCI_DEVICE(0x423C, 0x1206, iwl5150_abg_cfg)}, /* Mini Card */
4716 {IWL_PCI_DEVICE(0x423C, 0x1306, iwl5150_abg_cfg)}, /* Half Mini Card */
4717 {IWL_PCI_DEVICE(0x423C, 0x1221, iwl5150_agn_cfg)}, /* Mini Card */
4718 {IWL_PCI_DEVICE(0x423C, 0x1321, iwl5150_agn_cfg)}, /* Half Mini Card */
4719
4720 {IWL_PCI_DEVICE(0x423D, 0x1211, iwl5150_agn_cfg)}, /* Mini Card */
4721 {IWL_PCI_DEVICE(0x423D, 0x1311, iwl5150_agn_cfg)}, /* Half Mini Card */
4722 {IWL_PCI_DEVICE(0x423D, 0x1216, iwl5150_abg_cfg)}, /* Mini Card */
4723 {IWL_PCI_DEVICE(0x423D, 0x1316, iwl5150_abg_cfg)}, /* Half Mini Card */
4724
4725 /* 6x00 Series */
4726 {IWL_PCI_DEVICE(0x422B, 0x1101, iwl6000_3agn_cfg)},
4727 {IWL_PCI_DEVICE(0x422B, 0x1121, iwl6000_3agn_cfg)},
4728 {IWL_PCI_DEVICE(0x422C, 0x1301, iwl6000i_2agn_cfg)},
4729 {IWL_PCI_DEVICE(0x422C, 0x1306, iwl6000i_2abg_cfg)},
4730 {IWL_PCI_DEVICE(0x422C, 0x1307, iwl6000i_2bg_cfg)},
4731 {IWL_PCI_DEVICE(0x422C, 0x1321, iwl6000i_2agn_cfg)},
4732 {IWL_PCI_DEVICE(0x422C, 0x1326, iwl6000i_2abg_cfg)},
4733 {IWL_PCI_DEVICE(0x4238, 0x1111, iwl6000_3agn_cfg)},
4734 {IWL_PCI_DEVICE(0x4239, 0x1311, iwl6000i_2agn_cfg)},
4735 {IWL_PCI_DEVICE(0x4239, 0x1316, iwl6000i_2abg_cfg)},
4736
4737 /* 6x00 Series Gen2a */
4738 {IWL_PCI_DEVICE(0x0082, 0x1201, iwl6000g2a_2agn_cfg)},
4739 {IWL_PCI_DEVICE(0x0085, 0x1211, iwl6000g2a_2agn_cfg)},
4740 {IWL_PCI_DEVICE(0x0082, 0x1221, iwl6000g2a_2agn_cfg)},
4741 {IWL_PCI_DEVICE(0x0082, 0x1206, iwl6000g2a_2abg_cfg)},
4742 {IWL_PCI_DEVICE(0x0085, 0x1216, iwl6000g2a_2abg_cfg)},
4743 {IWL_PCI_DEVICE(0x0082, 0x1226, iwl6000g2a_2abg_cfg)},
4744 {IWL_PCI_DEVICE(0x0082, 0x1207, iwl6000g2a_2bg_cfg)},
4745 {IWL_PCI_DEVICE(0x0082, 0x1301, iwl6000g2a_2agn_cfg)},
4746 {IWL_PCI_DEVICE(0x0082, 0x1306, iwl6000g2a_2abg_cfg)},
4747 {IWL_PCI_DEVICE(0x0082, 0x1307, iwl6000g2a_2bg_cfg)},
4748 {IWL_PCI_DEVICE(0x0082, 0x1321, iwl6000g2a_2agn_cfg)},
4749 {IWL_PCI_DEVICE(0x0082, 0x1326, iwl6000g2a_2abg_cfg)},
4750 {IWL_PCI_DEVICE(0x0085, 0x1311, iwl6000g2a_2agn_cfg)},
4751 {IWL_PCI_DEVICE(0x0085, 0x1316, iwl6000g2a_2abg_cfg)},
4752
4753 /* 6x00 Series Gen2b */
4754 {IWL_PCI_DEVICE(0x008F, 0x5105, iwl6000g2b_bgn_cfg)},
4755 {IWL_PCI_DEVICE(0x0090, 0x5115, iwl6000g2b_bgn_cfg)},
4756 {IWL_PCI_DEVICE(0x008F, 0x5125, iwl6000g2b_bgn_cfg)},
4757 {IWL_PCI_DEVICE(0x008F, 0x5107, iwl6000g2b_bg_cfg)},
4758 {IWL_PCI_DEVICE(0x008F, 0x5201, iwl6000g2b_2agn_cfg)},
4759 {IWL_PCI_DEVICE(0x0090, 0x5211, iwl6000g2b_2agn_cfg)},
4760 {IWL_PCI_DEVICE(0x008F, 0x5221, iwl6000g2b_2agn_cfg)},
4761 {IWL_PCI_DEVICE(0x008F, 0x5206, iwl6000g2b_2abg_cfg)},
4762 {IWL_PCI_DEVICE(0x0090, 0x5216, iwl6000g2b_2abg_cfg)},
4763 {IWL_PCI_DEVICE(0x008F, 0x5226, iwl6000g2b_2abg_cfg)},
4764 {IWL_PCI_DEVICE(0x008F, 0x5207, iwl6000g2b_2bg_cfg)},
4765 {IWL_PCI_DEVICE(0x008A, 0x5301, iwl6000g2b_bgn_cfg)},
4766 {IWL_PCI_DEVICE(0x008A, 0x5305, iwl6000g2b_bgn_cfg)},
4767 {IWL_PCI_DEVICE(0x008A, 0x5307, iwl6000g2b_bg_cfg)},
4768 {IWL_PCI_DEVICE(0x008A, 0x5321, iwl6000g2b_bgn_cfg)},
4769 {IWL_PCI_DEVICE(0x008A, 0x5325, iwl6000g2b_bgn_cfg)},
4770 {IWL_PCI_DEVICE(0x008B, 0x5311, iwl6000g2b_bgn_cfg)},
4771 {IWL_PCI_DEVICE(0x008B, 0x5315, iwl6000g2b_bgn_cfg)},
4772 {IWL_PCI_DEVICE(0x0090, 0x5211, iwl6000g2b_2agn_cfg)},
4773 {IWL_PCI_DEVICE(0x0090, 0x5215, iwl6000g2b_2bgn_cfg)},
4774 {IWL_PCI_DEVICE(0x0090, 0x5216, iwl6000g2b_2abg_cfg)},
4775 {IWL_PCI_DEVICE(0x0091, 0x5201, iwl6000g2b_2agn_cfg)},
4776 {IWL_PCI_DEVICE(0x0091, 0x5205, iwl6000g2b_2bgn_cfg)},
4777 {IWL_PCI_DEVICE(0x0091, 0x5206, iwl6000g2b_2abg_cfg)},
4778 {IWL_PCI_DEVICE(0x0091, 0x5207, iwl6000g2b_2bg_cfg)},
4779 {IWL_PCI_DEVICE(0x0091, 0x5221, iwl6000g2b_2agn_cfg)},
4780 {IWL_PCI_DEVICE(0x0091, 0x5225, iwl6000g2b_2bgn_cfg)},
4781 {IWL_PCI_DEVICE(0x0091, 0x5226, iwl6000g2b_2abg_cfg)},
4782
4783 /* 6x50 WiFi/WiMax Series */
4784 {IWL_PCI_DEVICE(0x0087, 0x1301, iwl6050_2agn_cfg)},
4785 {IWL_PCI_DEVICE(0x0087, 0x1306, iwl6050_2abg_cfg)},
4786 {IWL_PCI_DEVICE(0x0087, 0x1321, iwl6050_2agn_cfg)},
4787 {IWL_PCI_DEVICE(0x0087, 0x1326, iwl6050_2abg_cfg)},
4788 {IWL_PCI_DEVICE(0x0089, 0x1311, iwl6050_2agn_cfg)},
4789 {IWL_PCI_DEVICE(0x0089, 0x1316, iwl6050_2abg_cfg)},
4790
4791 /* 6x50 WiFi/WiMax Series Gen2 */
4792 {IWL_PCI_DEVICE(0x0885, 0x1305, iwl6050g2_bgn_cfg)},
4793 {IWL_PCI_DEVICE(0x0885, 0x1306, iwl6050g2_bgn_cfg)},
4794 {IWL_PCI_DEVICE(0x0885, 0x1325, iwl6050g2_bgn_cfg)},
4795 {IWL_PCI_DEVICE(0x0885, 0x1326, iwl6050g2_bgn_cfg)},
4796 {IWL_PCI_DEVICE(0x0886, 0x1315, iwl6050g2_bgn_cfg)},
4797 {IWL_PCI_DEVICE(0x0886, 0x1316, iwl6050g2_bgn_cfg)},
4798
4799 /* 1000 Series WiFi */
4800 {IWL_PCI_DEVICE(0x0083, 0x1205, iwl1000_bgn_cfg)},
4801 {IWL_PCI_DEVICE(0x0083, 0x1305, iwl1000_bgn_cfg)},
4802 {IWL_PCI_DEVICE(0x0083, 0x1225, iwl1000_bgn_cfg)},
4803 {IWL_PCI_DEVICE(0x0083, 0x1325, iwl1000_bgn_cfg)},
4804 {IWL_PCI_DEVICE(0x0084, 0x1215, iwl1000_bgn_cfg)},
4805 {IWL_PCI_DEVICE(0x0084, 0x1315, iwl1000_bgn_cfg)},
4806 {IWL_PCI_DEVICE(0x0083, 0x1206, iwl1000_bg_cfg)},
4807 {IWL_PCI_DEVICE(0x0083, 0x1306, iwl1000_bg_cfg)},
4808 {IWL_PCI_DEVICE(0x0083, 0x1226, iwl1000_bg_cfg)},
4809 {IWL_PCI_DEVICE(0x0083, 0x1326, iwl1000_bg_cfg)},
4810 {IWL_PCI_DEVICE(0x0084, 0x1216, iwl1000_bg_cfg)},
4811 {IWL_PCI_DEVICE(0x0084, 0x1316, iwl1000_bg_cfg)},
4812
4813 /* 100 Series WiFi */
4814 {IWL_PCI_DEVICE(0x08AE, 0x1005, iwl100_bgn_cfg)},
4815 {IWL_PCI_DEVICE(0x08AF, 0x1015, iwl100_bgn_cfg)},
4816 {IWL_PCI_DEVICE(0x08AE, 0x1025, iwl100_bgn_cfg)},
4817 {IWL_PCI_DEVICE(0x08AE, 0x1007, iwl100_bg_cfg)},
4818 {IWL_PCI_DEVICE(0x08AE, 0x1017, iwl100_bg_cfg)},
4819
4820 /* 130 Series WiFi */
4821 {IWL_PCI_DEVICE(0x0896, 0x5005, iwl130_bgn_cfg)},
4822 {IWL_PCI_DEVICE(0x0896, 0x5007, iwl130_bg_cfg)},
4823 {IWL_PCI_DEVICE(0x0897, 0x5015, iwl130_bgn_cfg)},
4824 {IWL_PCI_DEVICE(0x0897, 0x5017, iwl130_bg_cfg)},
4825 {IWL_PCI_DEVICE(0x0896, 0x5025, iwl130_bgn_cfg)},
4826 {IWL_PCI_DEVICE(0x0896, 0x5027, iwl130_bg_cfg)},
4827
4828 #endif /* CONFIG_IWL5000 */
4829
4830 {0}
4831 };
4832 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4833
4834 static struct pci_driver iwl_driver = {
4835 .name = DRV_NAME,
4836 .id_table = iwl_hw_card_ids,
4837 .probe = iwl_pci_probe,
4838 .remove = __devexit_p(iwl_pci_remove),
4839 #ifdef CONFIG_PM
4840 .suspend = iwl_pci_suspend,
4841 .resume = iwl_pci_resume,
4842 #endif
4843 };
4844
4845 static int __init iwl_init(void)
4846 {
4847
4848 int ret;
4849 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
4850 pr_info(DRV_COPYRIGHT "\n");
4851
4852 ret = iwlagn_rate_control_register();
4853 if (ret) {
4854 pr_err("Unable to register rate control algorithm: %d\n", ret);
4855 return ret;
4856 }
4857
4858 ret = pci_register_driver(&iwl_driver);
4859 if (ret) {
4860 pr_err("Unable to initialize PCI module\n");
4861 goto error_register;
4862 }
4863
4864 return ret;
4865
4866 error_register:
4867 iwlagn_rate_control_unregister();
4868 return ret;
4869 }
4870
4871 static void __exit iwl_exit(void)
4872 {
4873 pci_unregister_driver(&iwl_driver);
4874 iwlagn_rate_control_unregister();
4875 }
4876
4877 module_exit(iwl_exit);
4878 module_init(iwl_init);
4879
4880 #ifdef CONFIG_IWLWIFI_DEBUG
4881 module_param_named(debug50, iwl_debug_level, uint, S_IRUGO);
4882 MODULE_PARM_DESC(debug50, "50XX debug output mask (deprecated)");
4883 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
4884 MODULE_PARM_DESC(debug, "debug output mask");
4885 #endif
4886
4887 module_param_named(swcrypto50, iwlagn_mod_params.sw_crypto, bool, S_IRUGO);
4888 MODULE_PARM_DESC(swcrypto50,
4889 "using crypto in software (default 0 [hardware]) (deprecated)");
4890 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
4891 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
4892 module_param_named(queues_num50,
4893 iwlagn_mod_params.num_of_queues, int, S_IRUGO);
4894 MODULE_PARM_DESC(queues_num50,
4895 "number of hw queues in 50xx series (deprecated)");
4896 module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
4897 MODULE_PARM_DESC(queues_num, "number of hw queues.");
4898 module_param_named(11n_disable50, iwlagn_mod_params.disable_11n, int, S_IRUGO);
4899 MODULE_PARM_DESC(11n_disable50, "disable 50XX 11n functionality (deprecated)");
4900 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, int, S_IRUGO);
4901 MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
4902 module_param_named(amsdu_size_8K50, iwlagn_mod_params.amsdu_size_8K,
4903 int, S_IRUGO);
4904 MODULE_PARM_DESC(amsdu_size_8K50,
4905 "enable 8K amsdu size in 50XX series (deprecated)");
4906 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
4907 int, S_IRUGO);
4908 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
4909 module_param_named(fw_restart50, iwlagn_mod_params.restart_fw, int, S_IRUGO);
4910 MODULE_PARM_DESC(fw_restart50,
4911 "restart firmware in case of error (deprecated)");
4912 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
4913 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
4914 module_param_named(
4915 disable_hw_scan, iwlagn_mod_params.disable_hw_scan, int, S_IRUGO);
4916 MODULE_PARM_DESC(disable_hw_scan,
4917 "disable hardware scanning (default 0) (deprecated)");
4918
4919 module_param_named(ucode_alternative, iwlagn_wanted_ucode_alternative, int,
4920 S_IRUGO);
4921 MODULE_PARM_DESC(ucode_alternative,
4922 "specify ucode alternative to use from ucode file");
4923
4924 module_param_named(antenna_coupling, iwlagn_ant_coupling, int, S_IRUGO);
4925 MODULE_PARM_DESC(antenna_coupling,
4926 "specify antenna coupling in dB (defualt: 0 dB)");
4927
4928 module_param_named(bt_ch_announce, iwlagn_bt_ch_announce, bool, S_IRUGO);
4929 MODULE_PARM_DESC(bt_ch_announce,
4930 "Enable BT channel announcement mode (default: enable)");
kernel source for telekom puls (alcatel/mediatek)