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iwlagn: fix default calibration table size
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / iwlwifi / iwl-agn.c
blobc4fe3f94c366b7b832d189c5366a0ebe611241e3
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 if (!priv->ibss_beacon)
321 return 0;
322
323 if (priv->ibss_beacon->len > left)
324 return 0;
325
326 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
327
328 return priv->ibss_beacon->len;
329 }
330
331 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
332 static void iwl_set_beacon_tim(struct iwl_priv *priv,
333 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
334 u8 *beacon, u32 frame_size)
335 {
336 u16 tim_idx;
337 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
338
339 /*
340 * The index is relative to frame start but we start looking at the
341 * variable-length part of the beacon.
342 */
343 tim_idx = mgmt->u.beacon.variable - beacon;
344
345 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
346 while ((tim_idx < (frame_size - 2)) &&
347 (beacon[tim_idx] != WLAN_EID_TIM))
348 tim_idx += beacon[tim_idx+1] + 2;
349
350 /* If TIM field was found, set variables */
351 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
352 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
353 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
354 } else
355 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
356 }
357
358 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv,
359 struct iwl_frame *frame)
360 {
361 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
362 u32 frame_size;
363 u32 rate_flags;
364 u32 rate;
365 /*
366 * We have to set up the TX command, the TX Beacon command, and the
367 * beacon contents.
368 */
369
370 lockdep_assert_held(&priv->mutex);
371
372 if (!priv->beacon_ctx) {
373 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
374 return 0;
375 }
376
377 /* Initialize memory */
378 tx_beacon_cmd = &frame->u.beacon;
379 memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
380
381 /* Set up TX beacon contents */
382 frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
383 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
384 if (WARN_ON_ONCE(frame_size > MAX_MPDU_SIZE))
385 return 0;
386
387 /* Set up TX command fields */
388 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
389 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
390 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
391 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
392 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
393
394 /* Set up TX beacon command fields */
395 iwl_set_beacon_tim(priv, tx_beacon_cmd, (u8 *)tx_beacon_cmd->frame,
396 frame_size);
397
398 /* Set up packet rate and flags */
399 rate = iwl_rate_get_lowest_plcp(priv, priv->beacon_ctx);
400 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
401 priv->hw_params.valid_tx_ant);
402 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
403 if ((rate >= IWL_FIRST_CCK_RATE) && (rate <= IWL_LAST_CCK_RATE))
404 rate_flags |= RATE_MCS_CCK_MSK;
405 tx_beacon_cmd->tx.rate_n_flags = iwl_hw_set_rate_n_flags(rate,
406 rate_flags);
407
408 return sizeof(*tx_beacon_cmd) + frame_size;
409 }
410 static int iwl_send_beacon_cmd(struct iwl_priv *priv)
411 {
412 struct iwl_frame *frame;
413 unsigned int frame_size;
414 int rc;
415
416 frame = iwl_get_free_frame(priv);
417 if (!frame) {
418 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
419 "command.\n");
420 return -ENOMEM;
421 }
422
423 frame_size = iwl_hw_get_beacon_cmd(priv, frame);
424 if (!frame_size) {
425 IWL_ERR(priv, "Error configuring the beacon command\n");
426 iwl_free_frame(priv, frame);
427 return -EINVAL;
428 }
429
430 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
431 &frame->u.cmd[0]);
432
433 iwl_free_frame(priv, frame);
434
435 return rc;
436 }
437
438 static inline dma_addr_t iwl_tfd_tb_get_addr(struct iwl_tfd *tfd, u8 idx)
439 {
440 struct iwl_tfd_tb *tb = &tfd->tbs[idx];
441
442 dma_addr_t addr = get_unaligned_le32(&tb->lo);
443 if (sizeof(dma_addr_t) > sizeof(u32))
444 addr |=
445 ((dma_addr_t)(le16_to_cpu(tb->hi_n_len) & 0xF) << 16) << 16;
446
447 return addr;
448 }
449
450 static inline u16 iwl_tfd_tb_get_len(struct iwl_tfd *tfd, u8 idx)
451 {
452 struct iwl_tfd_tb *tb = &tfd->tbs[idx];
453
454 return le16_to_cpu(tb->hi_n_len) >> 4;
455 }
456
457 static inline void iwl_tfd_set_tb(struct iwl_tfd *tfd, u8 idx,
458 dma_addr_t addr, u16 len)
459 {
460 struct iwl_tfd_tb *tb = &tfd->tbs[idx];
461 u16 hi_n_len = len << 4;
462
463 put_unaligned_le32(addr, &tb->lo);
464 if (sizeof(dma_addr_t) > sizeof(u32))
465 hi_n_len |= ((addr >> 16) >> 16) & 0xF;
466
467 tb->hi_n_len = cpu_to_le16(hi_n_len);
468
469 tfd->num_tbs = idx + 1;
470 }
471
472 static inline u8 iwl_tfd_get_num_tbs(struct iwl_tfd *tfd)
473 {
474 return tfd->num_tbs & 0x1f;
475 }
476
477 /**
478 * iwl_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr]
479 * @priv - driver private data
480 * @txq - tx queue
481 *
482 * Does NOT advance any TFD circular buffer read/write indexes
483 * Does NOT free the TFD itself (which is within circular buffer)
484 */
485 void iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
486 {
487 struct iwl_tfd *tfd_tmp = (struct iwl_tfd *)txq->tfds;
488 struct iwl_tfd *tfd;
489 struct pci_dev *dev = priv->pci_dev;
490 int index = txq->q.read_ptr;
491 int i;
492 int num_tbs;
493
494 tfd = &tfd_tmp[index];
495
496 /* Sanity check on number of chunks */
497 num_tbs = iwl_tfd_get_num_tbs(tfd);
498
499 if (num_tbs >= IWL_NUM_OF_TBS) {
500 IWL_ERR(priv, "Too many chunks: %i\n", num_tbs);
501 /* @todo issue fatal error, it is quite serious situation */
502 return;
503 }
504
505 /* Unmap tx_cmd */
506 if (num_tbs)
507 pci_unmap_single(dev,
508 dma_unmap_addr(&txq->meta[index], mapping),
509 dma_unmap_len(&txq->meta[index], len),
510 PCI_DMA_BIDIRECTIONAL);
511
512 /* Unmap chunks, if any. */
513 for (i = 1; i < num_tbs; i++)
514 pci_unmap_single(dev, iwl_tfd_tb_get_addr(tfd, i),
515 iwl_tfd_tb_get_len(tfd, i), PCI_DMA_TODEVICE);
516
517 /* free SKB */
518 if (txq->txb) {
519 struct sk_buff *skb;
520
521 skb = txq->txb[txq->q.read_ptr].skb;
522
523 /* can be called from irqs-disabled context */
524 if (skb) {
525 dev_kfree_skb_any(skb);
526 txq->txb[txq->q.read_ptr].skb = NULL;
527 }
528 }
529 }
530
531 int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
532 struct iwl_tx_queue *txq,
533 dma_addr_t addr, u16 len,
534 u8 reset, u8 pad)
535 {
536 struct iwl_queue *q;
537 struct iwl_tfd *tfd, *tfd_tmp;
538 u32 num_tbs;
539
540 q = &txq->q;
541 tfd_tmp = (struct iwl_tfd *)txq->tfds;
542 tfd = &tfd_tmp[q->write_ptr];
543
544 if (reset)
545 memset(tfd, 0, sizeof(*tfd));
546
547 num_tbs = iwl_tfd_get_num_tbs(tfd);
548
549 /* Each TFD can point to a maximum 20 Tx buffers */
550 if (num_tbs >= IWL_NUM_OF_TBS) {
551 IWL_ERR(priv, "Error can not send more than %d chunks\n",
552 IWL_NUM_OF_TBS);
553 return -EINVAL;
554 }
555
556 BUG_ON(addr & ~DMA_BIT_MASK(36));
557 if (unlikely(addr & ~IWL_TX_DMA_MASK))
558 IWL_ERR(priv, "Unaligned address = %llx\n",
559 (unsigned long long)addr);
560
561 iwl_tfd_set_tb(tfd, num_tbs, addr, len);
562
563 return 0;
564 }
565
566 /*
567 * Tell nic where to find circular buffer of Tx Frame Descriptors for
568 * given Tx queue, and enable the DMA channel used for that queue.
569 *
570 * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA
571 * channels supported in hardware.
572 */
573 int iwl_hw_tx_queue_init(struct iwl_priv *priv,
574 struct iwl_tx_queue *txq)
575 {
576 int txq_id = txq->q.id;
577
578 /* Circular buffer (TFD queue in DRAM) physical base address */
579 iwl_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id),
580 txq->q.dma_addr >> 8);
581
582 return 0;
583 }
584
585 /******************************************************************************
586 *
587 * Generic RX handler implementations
588 *
589 ******************************************************************************/
590 static void iwl_rx_reply_alive(struct iwl_priv *priv,
591 struct iwl_rx_mem_buffer *rxb)
592 {
593 struct iwl_rx_packet *pkt = rxb_addr(rxb);
594 struct iwl_alive_resp *palive;
595 struct delayed_work *pwork;
596
597 palive = &pkt->u.alive_frame;
598
599 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
600 "0x%01X 0x%01X\n",
601 palive->is_valid, palive->ver_type,
602 palive->ver_subtype);
603
604 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
605 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
606 memcpy(&priv->card_alive_init,
607 &pkt->u.alive_frame,
608 sizeof(struct iwl_init_alive_resp));
609 pwork = &priv->init_alive_start;
610 } else {
611 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
612 memcpy(&priv->card_alive, &pkt->u.alive_frame,
613 sizeof(struct iwl_alive_resp));
614 pwork = &priv->alive_start;
615 }
616
617 /* We delay the ALIVE response by 5ms to
618 * give the HW RF Kill time to activate... */
619 if (palive->is_valid == UCODE_VALID_OK)
620 queue_delayed_work(priv->workqueue, pwork,
621 msecs_to_jiffies(5));
622 else
623 IWL_WARN(priv, "uCode did not respond OK.\n");
624 }
625
626 static void iwl_bg_beacon_update(struct work_struct *work)
627 {
628 struct iwl_priv *priv =
629 container_of(work, struct iwl_priv, beacon_update);
630 struct sk_buff *beacon;
631
632 mutex_lock(&priv->mutex);
633 if (!priv->beacon_ctx) {
634 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
635 goto out;
636 }
637
638 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
639 /*
640 * The ucode will send beacon notifications even in
641 * IBSS mode, but we don't want to process them. But
642 * we need to defer the type check to here due to
643 * requiring locking around the beacon_ctx access.
644 */
645 goto out;
646 }
647
648 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
649 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
650 if (!beacon) {
651 IWL_ERR(priv, "update beacon failed\n");
652 goto out;
653 }
654
655 /* new beacon skb is allocated every time; dispose previous.*/
656 if (priv->ibss_beacon)
657 dev_kfree_skb(priv->ibss_beacon);
658
659 priv->ibss_beacon = beacon;
660
661 iwl_send_beacon_cmd(priv);
662 out:
663 mutex_unlock(&priv->mutex);
664 }
665
666 static void iwl_bg_bt_runtime_config(struct work_struct *work)
667 {
668 struct iwl_priv *priv =
669 container_of(work, struct iwl_priv, bt_runtime_config);
670
671 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
672 return;
673
674 /* dont send host command if rf-kill is on */
675 if (!iwl_is_ready_rf(priv))
676 return;
677 priv->cfg->ops->hcmd->send_bt_config(priv);
678 }
679
680 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
681 {
682 struct iwl_priv *priv =
683 container_of(work, struct iwl_priv, bt_full_concurrency);
684 struct iwl_rxon_context *ctx;
685
686 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
687 return;
688
689 /* dont send host command if rf-kill is on */
690 if (!iwl_is_ready_rf(priv))
691 return;
692
693 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
694 priv->bt_full_concurrent ?
695 "full concurrency" : "3-wire");
696
697 /*
698 * LQ & RXON updated cmds must be sent before BT Config cmd
699 * to avoid 3-wire collisions
700 */
701 mutex_lock(&priv->mutex);
702 for_each_context(priv, ctx) {
703 if (priv->cfg->ops->hcmd->set_rxon_chain)
704 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
705 iwlcore_commit_rxon(priv, ctx);
706 }
707 mutex_unlock(&priv->mutex);
708
709 priv->cfg->ops->hcmd->send_bt_config(priv);
710 }
711
712 /**
713 * iwl_bg_statistics_periodic - Timer callback to queue statistics
714 *
715 * This callback is provided in order to send a statistics request.
716 *
717 * This timer function is continually reset to execute within
718 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
719 * was received. We need to ensure we receive the statistics in order
720 * to update the temperature used for calibrating the TXPOWER.
721 */
722 static void iwl_bg_statistics_periodic(unsigned long data)
723 {
724 struct iwl_priv *priv = (struct iwl_priv *)data;
725
726 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
727 return;
728
729 /* dont send host command if rf-kill is on */
730 if (!iwl_is_ready_rf(priv))
731 return;
732
733 iwl_send_statistics_request(priv, CMD_ASYNC, false);
734 }
735
736
737 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
738 u32 start_idx, u32 num_events,
739 u32 mode)
740 {
741 u32 i;
742 u32 ptr; /* SRAM byte address of log data */
743 u32 ev, time, data; /* event log data */
744 unsigned long reg_flags;
745
746 if (mode == 0)
747 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
748 else
749 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
750
751 /* Make sure device is powered up for SRAM reads */
752 spin_lock_irqsave(&priv->reg_lock, reg_flags);
753 if (iwl_grab_nic_access(priv)) {
754 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
755 return;
756 }
757
758 /* Set starting address; reads will auto-increment */
759 _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
760 rmb();
761
762 /*
763 * "time" is actually "data" for mode 0 (no timestamp).
764 * place event id # at far right for easier visual parsing.
765 */
766 for (i = 0; i < num_events; i++) {
767 ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
768 time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
769 if (mode == 0) {
770 trace_iwlwifi_dev_ucode_cont_event(priv,
771 0, time, ev);
772 } else {
773 data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
774 trace_iwlwifi_dev_ucode_cont_event(priv,
775 time, data, ev);
776 }
777 }
778 /* Allow device to power down */
779 iwl_release_nic_access(priv);
780 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
781 }
782
783 static void iwl_continuous_event_trace(struct iwl_priv *priv)
784 {
785 u32 capacity; /* event log capacity in # entries */
786 u32 base; /* SRAM byte address of event log header */
787 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
788 u32 num_wraps; /* # times uCode wrapped to top of log */
789 u32 next_entry; /* index of next entry to be written by uCode */
790
791 if (priv->ucode_type == UCODE_INIT)
792 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
793 else
794 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
795 if (priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
796 capacity = iwl_read_targ_mem(priv, base);
797 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
798 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
799 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
800 } else
801 return;
802
803 if (num_wraps == priv->event_log.num_wraps) {
804 iwl_print_cont_event_trace(priv,
805 base, priv->event_log.next_entry,
806 next_entry - priv->event_log.next_entry,
807 mode);
808 priv->event_log.non_wraps_count++;
809 } else {
810 if ((num_wraps - priv->event_log.num_wraps) > 1)
811 priv->event_log.wraps_more_count++;
812 else
813 priv->event_log.wraps_once_count++;
814 trace_iwlwifi_dev_ucode_wrap_event(priv,
815 num_wraps - priv->event_log.num_wraps,
816 next_entry, priv->event_log.next_entry);
817 if (next_entry < priv->event_log.next_entry) {
818 iwl_print_cont_event_trace(priv, base,
819 priv->event_log.next_entry,
820 capacity - priv->event_log.next_entry,
821 mode);
822
823 iwl_print_cont_event_trace(priv, base, 0,
824 next_entry, mode);
825 } else {
826 iwl_print_cont_event_trace(priv, base,
827 next_entry, capacity - next_entry,
828 mode);
829
830 iwl_print_cont_event_trace(priv, base, 0,
831 next_entry, mode);
832 }
833 }
834 priv->event_log.num_wraps = num_wraps;
835 priv->event_log.next_entry = next_entry;
836 }
837
838 /**
839 * iwl_bg_ucode_trace - Timer callback to log ucode event
840 *
841 * The timer is continually set to execute every
842 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
843 * this function is to perform continuous uCode event logging operation
844 * if enabled
845 */
846 static void iwl_bg_ucode_trace(unsigned long data)
847 {
848 struct iwl_priv *priv = (struct iwl_priv *)data;
849
850 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
851 return;
852
853 if (priv->event_log.ucode_trace) {
854 iwl_continuous_event_trace(priv);
855 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
856 mod_timer(&priv->ucode_trace,
857 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
858 }
859 }
860
861 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
862 struct iwl_rx_mem_buffer *rxb)
863 {
864 struct iwl_rx_packet *pkt = rxb_addr(rxb);
865 struct iwl4965_beacon_notif *beacon =
866 (struct iwl4965_beacon_notif *)pkt->u.raw;
867 #ifdef CONFIG_IWLWIFI_DEBUG
868 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
869
870 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
871 "tsf %d %d rate %d\n",
872 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
873 beacon->beacon_notify_hdr.failure_frame,
874 le32_to_cpu(beacon->ibss_mgr_status),
875 le32_to_cpu(beacon->high_tsf),
876 le32_to_cpu(beacon->low_tsf), rate);
877 #endif
878
879 priv->ibss_manager = le32_to_cpu(beacon->ibss_mgr_status);
880
881 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
882 queue_work(priv->workqueue, &priv->beacon_update);
883 }
884
885 /* Handle notification from uCode that card's power state is changing
886 * due to software, hardware, or critical temperature RFKILL */
887 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
888 struct iwl_rx_mem_buffer *rxb)
889 {
890 struct iwl_rx_packet *pkt = rxb_addr(rxb);
891 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
892 unsigned long status = priv->status;
893
894 IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s CT:%s\n",
895 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
896 (flags & SW_CARD_DISABLED) ? "Kill" : "On",
897 (flags & CT_CARD_DISABLED) ?
898 "Reached" : "Not reached");
899
900 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
901 CT_CARD_DISABLED)) {
902
903 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
904 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
905
906 iwl_write_direct32(priv, HBUS_TARG_MBX_C,
907 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
908
909 if (!(flags & RXON_CARD_DISABLED)) {
910 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
911 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
912 iwl_write_direct32(priv, HBUS_TARG_MBX_C,
913 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
914 }
915 if (flags & CT_CARD_DISABLED)
916 iwl_tt_enter_ct_kill(priv);
917 }
918 if (!(flags & CT_CARD_DISABLED))
919 iwl_tt_exit_ct_kill(priv);
920
921 if (flags & HW_CARD_DISABLED)
922 set_bit(STATUS_RF_KILL_HW, &priv->status);
923 else
924 clear_bit(STATUS_RF_KILL_HW, &priv->status);
925
926
927 if (!(flags & RXON_CARD_DISABLED))
928 iwl_scan_cancel(priv);
929
930 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
931 test_bit(STATUS_RF_KILL_HW, &priv->status)))
932 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
933 test_bit(STATUS_RF_KILL_HW, &priv->status));
934 else
935 wake_up_interruptible(&priv->wait_command_queue);
936 }
937
938 static void iwl_bg_tx_flush(struct work_struct *work)
939 {
940 struct iwl_priv *priv =
941 container_of(work, struct iwl_priv, tx_flush);
942
943 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
944 return;
945
946 /* do nothing if rf-kill is on */
947 if (!iwl_is_ready_rf(priv))
948 return;
949
950 if (priv->cfg->ops->lib->txfifo_flush) {
951 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
952 iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
953 }
954 }
955
956 /**
957 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
958 *
959 * Setup the RX handlers for each of the reply types sent from the uCode
960 * to the host.
961 *
962 * This function chains into the hardware specific files for them to setup
963 * any hardware specific handlers as well.
964 */
965 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
966 {
967 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
968 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
969 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
970 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
971 iwl_rx_spectrum_measure_notif;
972 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
973 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
974 iwl_rx_pm_debug_statistics_notif;
975 priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
976
977 /*
978 * The same handler is used for both the REPLY to a discrete
979 * statistics request from the host as well as for the periodic
980 * statistics notifications (after received beacons) from the uCode.
981 */
982 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_reply_statistics;
983 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
984
985 iwl_setup_rx_scan_handlers(priv);
986
987 /* status change handler */
988 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
989
990 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
991 iwl_rx_missed_beacon_notif;
992 /* Rx handlers */
993 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwlagn_rx_reply_rx_phy;
994 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwlagn_rx_reply_rx;
995 /* block ack */
996 priv->rx_handlers[REPLY_COMPRESSED_BA] = iwlagn_rx_reply_compressed_ba;
997 /* Set up hardware specific Rx handlers */
998 priv->cfg->ops->lib->rx_handler_setup(priv);
999 }
1000
1001 /**
1002 * iwl_rx_handle - Main entry function for receiving responses from uCode
1003 *
1004 * Uses the priv->rx_handlers callback function array to invoke
1005 * the appropriate handlers, including command responses,
1006 * frame-received notifications, and other notifications.
1007 */
1008 void iwl_rx_handle(struct iwl_priv *priv)
1009 {
1010 struct iwl_rx_mem_buffer *rxb;
1011 struct iwl_rx_packet *pkt;
1012 struct iwl_rx_queue *rxq = &priv->rxq;
1013 u32 r, i;
1014 int reclaim;
1015 unsigned long flags;
1016 u8 fill_rx = 0;
1017 u32 count = 8;
1018 int total_empty;
1019
1020 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1021 * buffer that the driver may process (last buffer filled by ucode). */
1022 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
1023 i = rxq->read;
1024
1025 /* Rx interrupt, but nothing sent from uCode */
1026 if (i == r)
1027 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
1028
1029 /* calculate total frames need to be restock after handling RX */
1030 total_empty = r - rxq->write_actual;
1031 if (total_empty < 0)
1032 total_empty += RX_QUEUE_SIZE;
1033
1034 if (total_empty > (RX_QUEUE_SIZE / 2))
1035 fill_rx = 1;
1036
1037 while (i != r) {
1038 int len;
1039
1040 rxb = rxq->queue[i];
1041
1042 /* If an RXB doesn't have a Rx queue slot associated with it,
1043 * then a bug has been introduced in the queue refilling
1044 * routines -- catch it here */
1045 BUG_ON(rxb == NULL);
1046
1047 rxq->queue[i] = NULL;
1048
1049 pci_unmap_page(priv->pci_dev, rxb->page_dma,
1050 PAGE_SIZE << priv->hw_params.rx_page_order,
1051 PCI_DMA_FROMDEVICE);
1052 pkt = rxb_addr(rxb);
1053
1054 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
1055 len += sizeof(u32); /* account for status word */
1056 trace_iwlwifi_dev_rx(priv, pkt, len);
1057
1058 /* Reclaim a command buffer only if this packet is a response
1059 * to a (driver-originated) command.
1060 * If the packet (e.g. Rx frame) originated from uCode,
1061 * there is no command buffer to reclaim.
1062 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1063 * but apparently a few don't get set; catch them here. */
1064 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1065 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1066 (pkt->hdr.cmd != REPLY_RX) &&
1067 (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
1068 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1069 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1070 (pkt->hdr.cmd != REPLY_TX);
1071
1072 /* Based on type of command response or notification,
1073 * handle those that need handling via function in
1074 * rx_handlers table. See iwl_setup_rx_handlers() */
1075 if (priv->rx_handlers[pkt->hdr.cmd]) {
1076 IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r,
1077 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1078 priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
1079 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1080 } else {
1081 /* No handling needed */
1082 IWL_DEBUG_RX(priv,
1083 "r %d i %d No handler needed for %s, 0x%02x\n",
1084 r, i, get_cmd_string(pkt->hdr.cmd),
1085 pkt->hdr.cmd);
1086 }
1087
1088 /*
1089 * XXX: After here, we should always check rxb->page
1090 * against NULL before touching it or its virtual
1091 * memory (pkt). Because some rx_handler might have
1092 * already taken or freed the pages.
1093 */
1094
1095 if (reclaim) {
1096 /* Invoke any callbacks, transfer the buffer to caller,
1097 * and fire off the (possibly) blocking iwl_send_cmd()
1098 * as we reclaim the driver command queue */
1099 if (rxb->page)
1100 iwl_tx_cmd_complete(priv, rxb);
1101 else
1102 IWL_WARN(priv, "Claim null rxb?\n");
1103 }
1104
1105 /* Reuse the page if possible. For notification packets and
1106 * SKBs that fail to Rx correctly, add them back into the
1107 * rx_free list for reuse later. */
1108 spin_lock_irqsave(&rxq->lock, flags);
1109 if (rxb->page != NULL) {
1110 rxb->page_dma = pci_map_page(priv->pci_dev, rxb->page,
1111 0, PAGE_SIZE << priv->hw_params.rx_page_order,
1112 PCI_DMA_FROMDEVICE);
1113 list_add_tail(&rxb->list, &rxq->rx_free);
1114 rxq->free_count++;
1115 } else
1116 list_add_tail(&rxb->list, &rxq->rx_used);
1117
1118 spin_unlock_irqrestore(&rxq->lock, flags);
1119
1120 i = (i + 1) & RX_QUEUE_MASK;
1121 /* If there are a lot of unused frames,
1122 * restock the Rx queue so ucode wont assert. */
1123 if (fill_rx) {
1124 count++;
1125 if (count >= 8) {
1126 rxq->read = i;
1127 iwlagn_rx_replenish_now(priv);
1128 count = 0;
1129 }
1130 }
1131 }
1132
1133 /* Backtrack one entry */
1134 rxq->read = i;
1135 if (fill_rx)
1136 iwlagn_rx_replenish_now(priv);
1137 else
1138 iwlagn_rx_queue_restock(priv);
1139 }
1140
1141 /* call this function to flush any scheduled tasklet */
1142 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1143 {
1144 /* wait to make sure we flush pending tasklet*/
1145 synchronize_irq(priv->pci_dev->irq);
1146 tasklet_kill(&priv->irq_tasklet);
1147 }
1148
1149 static void iwl_irq_tasklet_legacy(struct iwl_priv *priv)
1150 {
1151 u32 inta, handled = 0;
1152 u32 inta_fh;
1153 unsigned long flags;
1154 u32 i;
1155 #ifdef CONFIG_IWLWIFI_DEBUG
1156 u32 inta_mask;
1157 #endif
1158
1159 spin_lock_irqsave(&priv->lock, flags);
1160
1161 /* Ack/clear/reset pending uCode interrupts.
1162 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1163 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1164 inta = iwl_read32(priv, CSR_INT);
1165 iwl_write32(priv, CSR_INT, inta);
1166
1167 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1168 * Any new interrupts that happen after this, either while we're
1169 * in this tasklet, or later, will show up in next ISR/tasklet. */
1170 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1171 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1172
1173 #ifdef CONFIG_IWLWIFI_DEBUG
1174 if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1175 /* just for debug */
1176 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1177 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1178 inta, inta_mask, inta_fh);
1179 }
1180 #endif
1181
1182 spin_unlock_irqrestore(&priv->lock, flags);
1183
1184 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1185 * atomic, make sure that inta covers all the interrupts that
1186 * we've discovered, even if FH interrupt came in just after
1187 * reading CSR_INT. */
1188 if (inta_fh & CSR49_FH_INT_RX_MASK)
1189 inta |= CSR_INT_BIT_FH_RX;
1190 if (inta_fh & CSR49_FH_INT_TX_MASK)
1191 inta |= CSR_INT_BIT_FH_TX;
1192
1193 /* Now service all interrupt bits discovered above. */
1194 if (inta & CSR_INT_BIT_HW_ERR) {
1195 IWL_ERR(priv, "Hardware error detected. Restarting.\n");
1196
1197 /* Tell the device to stop sending interrupts */
1198 iwl_disable_interrupts(priv);
1199
1200 priv->isr_stats.hw++;
1201 iwl_irq_handle_error(priv);
1202
1203 handled |= CSR_INT_BIT_HW_ERR;
1204
1205 return;
1206 }
1207
1208 #ifdef CONFIG_IWLWIFI_DEBUG
1209 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1210 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1211 if (inta & CSR_INT_BIT_SCD) {
1212 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1213 "the frame/frames.\n");
1214 priv->isr_stats.sch++;
1215 }
1216
1217 /* Alive notification via Rx interrupt will do the real work */
1218 if (inta & CSR_INT_BIT_ALIVE) {
1219 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1220 priv->isr_stats.alive++;
1221 }
1222 }
1223 #endif
1224 /* Safely ignore these bits for debug checks below */
1225 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1226
1227 /* HW RF KILL switch toggled */
1228 if (inta & CSR_INT_BIT_RF_KILL) {
1229 int hw_rf_kill = 0;
1230 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1231 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1232 hw_rf_kill = 1;
1233
1234 IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
1235 hw_rf_kill ? "disable radio" : "enable radio");
1236
1237 priv->isr_stats.rfkill++;
1238
1239 /* driver only loads ucode once setting the interface up.
1240 * the driver allows loading the ucode even if the radio
1241 * is killed. Hence update the killswitch state here. The
1242 * rfkill handler will care about restarting if needed.
1243 */
1244 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1245 if (hw_rf_kill)
1246 set_bit(STATUS_RF_KILL_HW, &priv->status);
1247 else
1248 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1249 wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
1250 }
1251
1252 handled |= CSR_INT_BIT_RF_KILL;
1253 }
1254
1255 /* Chip got too hot and stopped itself */
1256 if (inta & CSR_INT_BIT_CT_KILL) {
1257 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1258 priv->isr_stats.ctkill++;
1259 handled |= CSR_INT_BIT_CT_KILL;
1260 }
1261
1262 /* Error detected by uCode */
1263 if (inta & CSR_INT_BIT_SW_ERR) {
1264 IWL_ERR(priv, "Microcode SW error detected. "
1265 " Restarting 0x%X.\n", inta);
1266 priv->isr_stats.sw++;
1267 iwl_irq_handle_error(priv);
1268 handled |= CSR_INT_BIT_SW_ERR;
1269 }
1270
1271 /*
1272 * uCode wakes up after power-down sleep.
1273 * Tell device about any new tx or host commands enqueued,
1274 * and about any Rx buffers made available while asleep.
1275 */
1276 if (inta & CSR_INT_BIT_WAKEUP) {
1277 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1278 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1279 for (i = 0; i < priv->hw_params.max_txq_num; i++)
1280 iwl_txq_update_write_ptr(priv, &priv->txq[i]);
1281 priv->isr_stats.wakeup++;
1282 handled |= CSR_INT_BIT_WAKEUP;
1283 }
1284
1285 /* All uCode command responses, including Tx command responses,
1286 * Rx "responses" (frame-received notification), and other
1287 * notifications from uCode come through here*/
1288 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1289 iwl_rx_handle(priv);
1290 priv->isr_stats.rx++;
1291 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1292 }
1293
1294 /* This "Tx" DMA channel is used only for loading uCode */
1295 if (inta & CSR_INT_BIT_FH_TX) {
1296 IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
1297 priv->isr_stats.tx++;
1298 handled |= CSR_INT_BIT_FH_TX;
1299 /* Wake up uCode load routine, now that load is complete */
1300 priv->ucode_write_complete = 1;
1301 wake_up_interruptible(&priv->wait_command_queue);
1302 }
1303
1304 if (inta & ~handled) {
1305 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1306 priv->isr_stats.unhandled++;
1307 }
1308
1309 if (inta & ~(priv->inta_mask)) {
1310 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1311 inta & ~priv->inta_mask);
1312 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
1313 }
1314
1315 /* Re-enable all interrupts */
1316 /* only Re-enable if diabled by irq */
1317 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1318 iwl_enable_interrupts(priv);
1319
1320 #ifdef CONFIG_IWLWIFI_DEBUG
1321 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1322 inta = iwl_read32(priv, CSR_INT);
1323 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1324 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1325 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1326 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1327 }
1328 #endif
1329 }
1330
1331 /* tasklet for iwlagn interrupt */
1332 static void iwl_irq_tasklet(struct iwl_priv *priv)
1333 {
1334 u32 inta = 0;
1335 u32 handled = 0;
1336 unsigned long flags;
1337 u32 i;
1338 #ifdef CONFIG_IWLWIFI_DEBUG
1339 u32 inta_mask;
1340 #endif
1341
1342 spin_lock_irqsave(&priv->lock, flags);
1343
1344 /* Ack/clear/reset pending uCode interrupts.
1345 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1346 */
1347 /* There is a hardware bug in the interrupt mask function that some
1348 * interrupts (i.e. CSR_INT_BIT_SCD) can still be generated even if
1349 * they are disabled in the CSR_INT_MASK register. Furthermore the
1350 * ICT interrupt handling mechanism has another bug that might cause
1351 * these unmasked interrupts fail to be detected. We workaround the
1352 * hardware bugs here by ACKing all the possible interrupts so that
1353 * interrupt coalescing can still be achieved.
1354 */
1355 iwl_write32(priv, CSR_INT, priv->_agn.inta | ~priv->inta_mask);
1356
1357 inta = priv->_agn.inta;
1358
1359 #ifdef CONFIG_IWLWIFI_DEBUG
1360 if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1361 /* just for debug */
1362 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1363 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x\n ",
1364 inta, inta_mask);
1365 }
1366 #endif
1367
1368 spin_unlock_irqrestore(&priv->lock, flags);
1369
1370 /* saved interrupt in inta variable now we can reset priv->_agn.inta */
1371 priv->_agn.inta = 0;
1372
1373 /* Now service all interrupt bits discovered above. */
1374 if (inta & CSR_INT_BIT_HW_ERR) {
1375 IWL_ERR(priv, "Hardware error detected. Restarting.\n");
1376
1377 /* Tell the device to stop sending interrupts */
1378 iwl_disable_interrupts(priv);
1379
1380 priv->isr_stats.hw++;
1381 iwl_irq_handle_error(priv);
1382
1383 handled |= CSR_INT_BIT_HW_ERR;
1384
1385 return;
1386 }
1387
1388 #ifdef CONFIG_IWLWIFI_DEBUG
1389 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1390 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1391 if (inta & CSR_INT_BIT_SCD) {
1392 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1393 "the frame/frames.\n");
1394 priv->isr_stats.sch++;
1395 }
1396
1397 /* Alive notification via Rx interrupt will do the real work */
1398 if (inta & CSR_INT_BIT_ALIVE) {
1399 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1400 priv->isr_stats.alive++;
1401 }
1402 }
1403 #endif
1404 /* Safely ignore these bits for debug checks below */
1405 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1406
1407 /* HW RF KILL switch toggled */
1408 if (inta & CSR_INT_BIT_RF_KILL) {
1409 int hw_rf_kill = 0;
1410 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1411 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1412 hw_rf_kill = 1;
1413
1414 IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
1415 hw_rf_kill ? "disable radio" : "enable radio");
1416
1417 priv->isr_stats.rfkill++;
1418
1419 /* driver only loads ucode once setting the interface up.
1420 * the driver allows loading the ucode even if the radio
1421 * is killed. Hence update the killswitch state here. The
1422 * rfkill handler will care about restarting if needed.
1423 */
1424 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1425 if (hw_rf_kill)
1426 set_bit(STATUS_RF_KILL_HW, &priv->status);
1427 else
1428 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1429 wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
1430 }
1431
1432 handled |= CSR_INT_BIT_RF_KILL;
1433 }
1434
1435 /* Chip got too hot and stopped itself */
1436 if (inta & CSR_INT_BIT_CT_KILL) {
1437 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1438 priv->isr_stats.ctkill++;
1439 handled |= CSR_INT_BIT_CT_KILL;
1440 }
1441
1442 /* Error detected by uCode */
1443 if (inta & CSR_INT_BIT_SW_ERR) {
1444 IWL_ERR(priv, "Microcode SW error detected. "
1445 " Restarting 0x%X.\n", inta);
1446 priv->isr_stats.sw++;
1447 iwl_irq_handle_error(priv);
1448 handled |= CSR_INT_BIT_SW_ERR;
1449 }
1450
1451 /* uCode wakes up after power-down sleep */
1452 if (inta & CSR_INT_BIT_WAKEUP) {
1453 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1454 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1455 for (i = 0; i < priv->hw_params.max_txq_num; i++)
1456 iwl_txq_update_write_ptr(priv, &priv->txq[i]);
1457
1458 priv->isr_stats.wakeup++;
1459
1460 handled |= CSR_INT_BIT_WAKEUP;
1461 }
1462
1463 /* All uCode command responses, including Tx command responses,
1464 * Rx "responses" (frame-received notification), and other
1465 * notifications from uCode come through here*/
1466 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX |
1467 CSR_INT_BIT_RX_PERIODIC)) {
1468 IWL_DEBUG_ISR(priv, "Rx interrupt\n");
1469 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1470 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1471 iwl_write32(priv, CSR_FH_INT_STATUS,
1472 CSR49_FH_INT_RX_MASK);
1473 }
1474 if (inta & CSR_INT_BIT_RX_PERIODIC) {
1475 handled |= CSR_INT_BIT_RX_PERIODIC;
1476 iwl_write32(priv, CSR_INT, CSR_INT_BIT_RX_PERIODIC);
1477 }
1478 /* Sending RX interrupt require many steps to be done in the
1479 * the device:
1480 * 1- write interrupt to current index in ICT table.
1481 * 2- dma RX frame.
1482 * 3- update RX shared data to indicate last write index.
1483 * 4- send interrupt.
1484 * This could lead to RX race, driver could receive RX interrupt
1485 * but the shared data changes does not reflect this;
1486 * periodic interrupt will detect any dangling Rx activity.
1487 */
1488
1489 /* Disable periodic interrupt; we use it as just a one-shot. */
1490 iwl_write8(priv, CSR_INT_PERIODIC_REG,
1491 CSR_INT_PERIODIC_DIS);
1492 iwl_rx_handle(priv);
1493
1494 /*
1495 * Enable periodic interrupt in 8 msec only if we received
1496 * real RX interrupt (instead of just periodic int), to catch
1497 * any dangling Rx interrupt. If it was just the periodic
1498 * interrupt, there was no dangling Rx activity, and no need
1499 * to extend the periodic interrupt; one-shot is enough.
1500 */
1501 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX))
1502 iwl_write8(priv, CSR_INT_PERIODIC_REG,
1503 CSR_INT_PERIODIC_ENA);
1504
1505 priv->isr_stats.rx++;
1506 }
1507
1508 /* This "Tx" DMA channel is used only for loading uCode */
1509 if (inta & CSR_INT_BIT_FH_TX) {
1510 iwl_write32(priv, CSR_FH_INT_STATUS, CSR49_FH_INT_TX_MASK);
1511 IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
1512 priv->isr_stats.tx++;
1513 handled |= CSR_INT_BIT_FH_TX;
1514 /* Wake up uCode load routine, now that load is complete */
1515 priv->ucode_write_complete = 1;
1516 wake_up_interruptible(&priv->wait_command_queue);
1517 }
1518
1519 if (inta & ~handled) {
1520 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1521 priv->isr_stats.unhandled++;
1522 }
1523
1524 if (inta & ~(priv->inta_mask)) {
1525 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1526 inta & ~priv->inta_mask);
1527 }
1528
1529 /* Re-enable all interrupts */
1530 /* only Re-enable if diabled by irq */
1531 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1532 iwl_enable_interrupts(priv);
1533 }
1534
1535 /* the threshold ratio of actual_ack_cnt to expected_ack_cnt in percent */
1536 #define ACK_CNT_RATIO (50)
1537 #define BA_TIMEOUT_CNT (5)
1538 #define BA_TIMEOUT_MAX (16)
1539
1540 /**
1541 * iwl_good_ack_health - checks for ACK count ratios, BA timeout retries.
1542 *
1543 * When the ACK count ratio is 0 and aggregated BA timeout retries exceeding
1544 * the BA_TIMEOUT_MAX, reload firmware and bring system back to normal
1545 * operation state.
1546 */
1547 bool iwl_good_ack_health(struct iwl_priv *priv,
1548 struct iwl_rx_packet *pkt)
1549 {
1550 bool rc = true;
1551 int actual_ack_cnt_delta, expected_ack_cnt_delta;
1552 int ba_timeout_delta;
1553
1554 actual_ack_cnt_delta =
1555 le32_to_cpu(pkt->u.stats.tx.actual_ack_cnt) -
1556 le32_to_cpu(priv->_agn.statistics.tx.actual_ack_cnt);
1557 expected_ack_cnt_delta =
1558 le32_to_cpu(pkt->u.stats.tx.expected_ack_cnt) -
1559 le32_to_cpu(priv->_agn.statistics.tx.expected_ack_cnt);
1560 ba_timeout_delta =
1561 le32_to_cpu(pkt->u.stats.tx.agg.ba_timeout) -
1562 le32_to_cpu(priv->_agn.statistics.tx.agg.ba_timeout);
1563 if ((priv->_agn.agg_tids_count > 0) &&
1564 (expected_ack_cnt_delta > 0) &&
1565 (((actual_ack_cnt_delta * 100) / expected_ack_cnt_delta)
1566 < ACK_CNT_RATIO) &&
1567 (ba_timeout_delta > BA_TIMEOUT_CNT)) {
1568 IWL_DEBUG_RADIO(priv, "actual_ack_cnt delta = %d,"
1569 " expected_ack_cnt = %d\n",
1570 actual_ack_cnt_delta, expected_ack_cnt_delta);
1571
1572 #ifdef CONFIG_IWLWIFI_DEBUGFS
1573 /*
1574 * This is ifdef'ed on DEBUGFS because otherwise the
1575 * statistics aren't available. If DEBUGFS is set but
1576 * DEBUG is not, these will just compile out.
1577 */
1578 IWL_DEBUG_RADIO(priv, "rx_detected_cnt delta = %d\n",
1579 priv->_agn.delta_statistics.tx.rx_detected_cnt);
1580 IWL_DEBUG_RADIO(priv,
1581 "ack_or_ba_timeout_collision delta = %d\n",
1582 priv->_agn.delta_statistics.tx.
1583 ack_or_ba_timeout_collision);
1584 #endif
1585 IWL_DEBUG_RADIO(priv, "agg ba_timeout delta = %d\n",
1586 ba_timeout_delta);
1587 if (!actual_ack_cnt_delta &&
1588 (ba_timeout_delta >= BA_TIMEOUT_MAX))
1589 rc = false;
1590 }
1591 return rc;
1592 }
1593
1594
1595 /*****************************************************************************
1596 *
1597 * sysfs attributes
1598 *
1599 *****************************************************************************/
1600
1601 #ifdef CONFIG_IWLWIFI_DEBUG
1602
1603 /*
1604 * The following adds a new attribute to the sysfs representation
1605 * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
1606 * used for controlling the debug level.
1607 *
1608 * See the level definitions in iwl for details.
1609 *
1610 * The debug_level being managed using sysfs below is a per device debug
1611 * level that is used instead of the global debug level if it (the per
1612 * device debug level) is set.
1613 */
1614 static ssize_t show_debug_level(struct device *d,
1615 struct device_attribute *attr, char *buf)
1616 {
1617 struct iwl_priv *priv = dev_get_drvdata(d);
1618 return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
1619 }
1620 static ssize_t store_debug_level(struct device *d,
1621 struct device_attribute *attr,
1622 const char *buf, size_t count)
1623 {
1624 struct iwl_priv *priv = dev_get_drvdata(d);
1625 unsigned long val;
1626 int ret;
1627
1628 ret = strict_strtoul(buf, 0, &val);
1629 if (ret)
1630 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
1631 else {
1632 priv->debug_level = val;
1633 if (iwl_alloc_traffic_mem(priv))
1634 IWL_ERR(priv,
1635 "Not enough memory to generate traffic log\n");
1636 }
1637 return strnlen(buf, count);
1638 }
1639
1640 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
1641 show_debug_level, store_debug_level);
1642
1643
1644 #endif /* CONFIG_IWLWIFI_DEBUG */
1645
1646
1647 static ssize_t show_temperature(struct device *d,
1648 struct device_attribute *attr, char *buf)
1649 {
1650 struct iwl_priv *priv = dev_get_drvdata(d);
1651
1652 if (!iwl_is_alive(priv))
1653 return -EAGAIN;
1654
1655 return sprintf(buf, "%d\n", priv->temperature);
1656 }
1657
1658 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
1659
1660 static ssize_t show_tx_power(struct device *d,
1661 struct device_attribute *attr, char *buf)
1662 {
1663 struct iwl_priv *priv = dev_get_drvdata(d);
1664
1665 if (!iwl_is_ready_rf(priv))
1666 return sprintf(buf, "off\n");
1667 else
1668 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
1669 }
1670
1671 static ssize_t store_tx_power(struct device *d,
1672 struct device_attribute *attr,
1673 const char *buf, size_t count)
1674 {
1675 struct iwl_priv *priv = dev_get_drvdata(d);
1676 unsigned long val;
1677 int ret;
1678
1679 ret = strict_strtoul(buf, 10, &val);
1680 if (ret)
1681 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
1682 else {
1683 ret = iwl_set_tx_power(priv, val, false);
1684 if (ret)
1685 IWL_ERR(priv, "failed setting tx power (0x%d).\n",
1686 ret);
1687 else
1688 ret = count;
1689 }
1690 return ret;
1691 }
1692
1693 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
1694
1695 static struct attribute *iwl_sysfs_entries[] = {
1696 &dev_attr_temperature.attr,
1697 &dev_attr_tx_power.attr,
1698 #ifdef CONFIG_IWLWIFI_DEBUG
1699 &dev_attr_debug_level.attr,
1700 #endif
1701 NULL
1702 };
1703
1704 static struct attribute_group iwl_attribute_group = {
1705 .name = NULL, /* put in device directory */
1706 .attrs = iwl_sysfs_entries,
1707 };
1708
1709 /******************************************************************************
1710 *
1711 * uCode download functions
1712 *
1713 ******************************************************************************/
1714
1715 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1716 {
1717 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1718 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1719 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1720 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1721 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1722 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1723 }
1724
1725 static void iwl_nic_start(struct iwl_priv *priv)
1726 {
1727 /* Remove all resets to allow NIC to operate */
1728 iwl_write32(priv, CSR_RESET, 0);
1729 }
1730
1731 struct iwlagn_ucode_capabilities {
1732 u32 max_probe_length;
1733 u32 standard_phy_calibration_size;
1734 bool pan;
1735 };
1736
1737 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
1738 static int iwl_mac_setup_register(struct iwl_priv *priv,
1739 struct iwlagn_ucode_capabilities *capa);
1740
1741 #define UCODE_EXPERIMENTAL_INDEX 100
1742 #define UCODE_EXPERIMENTAL_TAG "exp"
1743
1744 static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
1745 {
1746 const char *name_pre = priv->cfg->fw_name_pre;
1747 char tag[8];
1748
1749 if (first) {
1750 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
1751 priv->fw_index = UCODE_EXPERIMENTAL_INDEX;
1752 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
1753 } else if (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
1754 #endif
1755 priv->fw_index = priv->cfg->ucode_api_max;
1756 sprintf(tag, "%d", priv->fw_index);
1757 } else {
1758 priv->fw_index--;
1759 sprintf(tag, "%d", priv->fw_index);
1760 }
1761
1762 if (priv->fw_index < priv->cfg->ucode_api_min) {
1763 IWL_ERR(priv, "no suitable firmware found!\n");
1764 return -ENOENT;
1765 }
1766
1767 sprintf(priv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
1768
1769 IWL_DEBUG_INFO(priv, "attempting to load firmware %s'%s'\n",
1770 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
1771 ? "EXPERIMENTAL " : "",
1772 priv->firmware_name);
1773
1774 return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
1775 &priv->pci_dev->dev, GFP_KERNEL, priv,
1776 iwl_ucode_callback);
1777 }
1778
1779 struct iwlagn_firmware_pieces {
1780 const void *inst, *data, *init, *init_data, *boot;
1781 size_t inst_size, data_size, init_size, init_data_size, boot_size;
1782
1783 u32 build;
1784
1785 u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
1786 u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
1787 };
1788
1789 static int iwlagn_load_legacy_firmware(struct iwl_priv *priv,
1790 const struct firmware *ucode_raw,
1791 struct iwlagn_firmware_pieces *pieces)
1792 {
1793 struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
1794 u32 api_ver, hdr_size;
1795 const u8 *src;
1796
1797 priv->ucode_ver = le32_to_cpu(ucode->ver);
1798 api_ver = IWL_UCODE_API(priv->ucode_ver);
1799
1800 switch (api_ver) {
1801 default:
1802 /*
1803 * 4965 doesn't revision the firmware file format
1804 * along with the API version, it always uses v1
1805 * file format.
1806 */
1807 if ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) !=
1808 CSR_HW_REV_TYPE_4965) {
1809 hdr_size = 28;
1810 if (ucode_raw->size < hdr_size) {
1811 IWL_ERR(priv, "File size too small!\n");
1812 return -EINVAL;
1813 }
1814 pieces->build = le32_to_cpu(ucode->u.v2.build);
1815 pieces->inst_size = le32_to_cpu(ucode->u.v2.inst_size);
1816 pieces->data_size = le32_to_cpu(ucode->u.v2.data_size);
1817 pieces->init_size = le32_to_cpu(ucode->u.v2.init_size);
1818 pieces->init_data_size = le32_to_cpu(ucode->u.v2.init_data_size);
1819 pieces->boot_size = le32_to_cpu(ucode->u.v2.boot_size);
1820 src = ucode->u.v2.data;
1821 break;
1822 }
1823 /* fall through for 4965 */
1824 case 0:
1825 case 1:
1826 case 2:
1827 hdr_size = 24;
1828 if (ucode_raw->size < hdr_size) {
1829 IWL_ERR(priv, "File size too small!\n");
1830 return -EINVAL;
1831 }
1832 pieces->build = 0;
1833 pieces->inst_size = le32_to_cpu(ucode->u.v1.inst_size);
1834 pieces->data_size = le32_to_cpu(ucode->u.v1.data_size);
1835 pieces->init_size = le32_to_cpu(ucode->u.v1.init_size);
1836 pieces->init_data_size = le32_to_cpu(ucode->u.v1.init_data_size);
1837 pieces->boot_size = le32_to_cpu(ucode->u.v1.boot_size);
1838 src = ucode->u.v1.data;
1839 break;
1840 }
1841
1842 /* Verify size of file vs. image size info in file's header */
1843 if (ucode_raw->size != hdr_size + pieces->inst_size +
1844 pieces->data_size + pieces->init_size +
1845 pieces->init_data_size + pieces->boot_size) {
1846
1847 IWL_ERR(priv,
1848 "uCode file size %d does not match expected size\n",
1849 (int)ucode_raw->size);
1850 return -EINVAL;
1851 }
1852
1853 pieces->inst = src;
1854 src += pieces->inst_size;
1855 pieces->data = src;
1856 src += pieces->data_size;
1857 pieces->init = src;
1858 src += pieces->init_size;
1859 pieces->init_data = src;
1860 src += pieces->init_data_size;
1861 pieces->boot = src;
1862 src += pieces->boot_size;
1863
1864 return 0;
1865 }
1866
1867 static int iwlagn_wanted_ucode_alternative = 1;
1868
1869 static int iwlagn_load_firmware(struct iwl_priv *priv,
1870 const struct firmware *ucode_raw,
1871 struct iwlagn_firmware_pieces *pieces,
1872 struct iwlagn_ucode_capabilities *capa)
1873 {
1874 struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
1875 struct iwl_ucode_tlv *tlv;
1876 size_t len = ucode_raw->size;
1877 const u8 *data;
1878 int wanted_alternative = iwlagn_wanted_ucode_alternative, tmp;
1879 u64 alternatives;
1880 u32 tlv_len;
1881 enum iwl_ucode_tlv_type tlv_type;
1882 const u8 *tlv_data;
1883
1884 if (len < sizeof(*ucode)) {
1885 IWL_ERR(priv, "uCode has invalid length: %zd\n", len);
1886 return -EINVAL;
1887 }
1888
1889 if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
1890 IWL_ERR(priv, "invalid uCode magic: 0X%x\n",
1891 le32_to_cpu(ucode->magic));
1892 return -EINVAL;
1893 }
1894
1895 /*
1896 * Check which alternatives are present, and "downgrade"
1897 * when the chosen alternative is not present, warning
1898 * the user when that happens. Some files may not have
1899 * any alternatives, so don't warn in that case.
1900 */
1901 alternatives = le64_to_cpu(ucode->alternatives);
1902 tmp = wanted_alternative;
1903 if (wanted_alternative > 63)
1904 wanted_alternative = 63;
1905 while (wanted_alternative && !(alternatives & BIT(wanted_alternative)))
1906 wanted_alternative--;
1907 if (wanted_alternative && wanted_alternative != tmp)
1908 IWL_WARN(priv,
1909 "uCode alternative %d not available, choosing %d\n",
1910 tmp, wanted_alternative);
1911
1912 priv->ucode_ver = le32_to_cpu(ucode->ver);
1913 pieces->build = le32_to_cpu(ucode->build);
1914 data = ucode->data;
1915
1916 len -= sizeof(*ucode);
1917
1918 while (len >= sizeof(*tlv)) {
1919 u16 tlv_alt;
1920
1921 len -= sizeof(*tlv);
1922 tlv = (void *)data;
1923
1924 tlv_len = le32_to_cpu(tlv->length);
1925 tlv_type = le16_to_cpu(tlv->type);
1926 tlv_alt = le16_to_cpu(tlv->alternative);
1927 tlv_data = tlv->data;
1928
1929 if (len < tlv_len) {
1930 IWL_ERR(priv, "invalid TLV len: %zd/%u\n",
1931 len, tlv_len);
1932 return -EINVAL;
1933 }
1934 len -= ALIGN(tlv_len, 4);
1935 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
1936
1937 /*
1938 * Alternative 0 is always valid.
1939 *
1940 * Skip alternative TLVs that are not selected.
1941 */
1942 if (tlv_alt != 0 && tlv_alt != wanted_alternative)
1943 continue;
1944
1945 switch (tlv_type) {
1946 case IWL_UCODE_TLV_INST:
1947 pieces->inst = tlv_data;
1948 pieces->inst_size = tlv_len;
1949 break;
1950 case IWL_UCODE_TLV_DATA:
1951 pieces->data = tlv_data;
1952 pieces->data_size = tlv_len;
1953 break;
1954 case IWL_UCODE_TLV_INIT:
1955 pieces->init = tlv_data;
1956 pieces->init_size = tlv_len;
1957 break;
1958 case IWL_UCODE_TLV_INIT_DATA:
1959 pieces->init_data = tlv_data;
1960 pieces->init_data_size = tlv_len;
1961 break;
1962 case IWL_UCODE_TLV_BOOT:
1963 pieces->boot = tlv_data;
1964 pieces->boot_size = tlv_len;
1965 break;
1966 case IWL_UCODE_TLV_PROBE_MAX_LEN:
1967 if (tlv_len != sizeof(u32))
1968 goto invalid_tlv_len;
1969 capa->max_probe_length =
1970 le32_to_cpup((__le32 *)tlv_data);
1971 break;
1972 case IWL_UCODE_TLV_PAN:
1973 if (tlv_len)
1974 goto invalid_tlv_len;
1975 capa->pan = true;
1976 break;
1977 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
1978 if (tlv_len != sizeof(u32))
1979 goto invalid_tlv_len;
1980 pieces->init_evtlog_ptr =
1981 le32_to_cpup((__le32 *)tlv_data);
1982 break;
1983 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
1984 if (tlv_len != sizeof(u32))
1985 goto invalid_tlv_len;
1986 pieces->init_evtlog_size =
1987 le32_to_cpup((__le32 *)tlv_data);
1988 break;
1989 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
1990 if (tlv_len != sizeof(u32))
1991 goto invalid_tlv_len;
1992 pieces->init_errlog_ptr =
1993 le32_to_cpup((__le32 *)tlv_data);
1994 break;
1995 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
1996 if (tlv_len != sizeof(u32))
1997 goto invalid_tlv_len;
1998 pieces->inst_evtlog_ptr =
1999 le32_to_cpup((__le32 *)tlv_data);
2000 break;
2001 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
2002 if (tlv_len != sizeof(u32))
2003 goto invalid_tlv_len;
2004 pieces->inst_evtlog_size =
2005 le32_to_cpup((__le32 *)tlv_data);
2006 break;
2007 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
2008 if (tlv_len != sizeof(u32))
2009 goto invalid_tlv_len;
2010 pieces->inst_errlog_ptr =
2011 le32_to_cpup((__le32 *)tlv_data);
2012 break;
2013 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
2014 if (tlv_len)
2015 goto invalid_tlv_len;
2016 priv->enhance_sensitivity_table = true;
2017 break;
2018 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
2019 if (tlv_len != sizeof(u32))
2020 goto invalid_tlv_len;
2021 capa->standard_phy_calibration_size =
2022 le32_to_cpup((__le32 *)tlv_data);
2023 break;
2024 default:
2025 IWL_WARN(priv, "unknown TLV: %d\n", tlv_type);
2026 break;
2027 }
2028 }
2029
2030 if (len) {
2031 IWL_ERR(priv, "invalid TLV after parsing: %zd\n", len);
2032 iwl_print_hex_dump(priv, IWL_DL_FW, (u8 *)data, len);
2033 return -EINVAL;
2034 }
2035
2036 return 0;
2037
2038 invalid_tlv_len:
2039 IWL_ERR(priv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
2040 iwl_print_hex_dump(priv, IWL_DL_FW, tlv_data, tlv_len);
2041
2042 return -EINVAL;
2043 }
2044
2045 /**
2046 * iwl_ucode_callback - callback when firmware was loaded
2047 *
2048 * If loaded successfully, copies the firmware into buffers
2049 * for the card to fetch (via DMA).
2050 */
2051 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
2052 {
2053 struct iwl_priv *priv = context;
2054 struct iwl_ucode_header *ucode;
2055 int err;
2056 struct iwlagn_firmware_pieces pieces;
2057 const unsigned int api_max = priv->cfg->ucode_api_max;
2058 const unsigned int api_min = priv->cfg->ucode_api_min;
2059 u32 api_ver;
2060 char buildstr[25];
2061 u32 build;
2062 struct iwlagn_ucode_capabilities ucode_capa = {
2063 .max_probe_length = 200,
2064 .standard_phy_calibration_size =
2065 IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE,
2066 };
2067
2068 memset(&pieces, 0, sizeof(pieces));
2069
2070 if (!ucode_raw) {
2071 if (priv->fw_index <= priv->cfg->ucode_api_max)
2072 IWL_ERR(priv,
2073 "request for firmware file '%s' failed.\n",
2074 priv->firmware_name);
2075 goto try_again;
2076 }
2077
2078 IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
2079 priv->firmware_name, ucode_raw->size);
2080
2081 /* Make sure that we got at least the API version number */
2082 if (ucode_raw->size < 4) {
2083 IWL_ERR(priv, "File size way too small!\n");
2084 goto try_again;
2085 }
2086
2087 /* Data from ucode file: header followed by uCode images */
2088 ucode = (struct iwl_ucode_header *)ucode_raw->data;
2089
2090 if (ucode->ver)
2091 err = iwlagn_load_legacy_firmware(priv, ucode_raw, &pieces);
2092 else
2093 err = iwlagn_load_firmware(priv, ucode_raw, &pieces,
2094 &ucode_capa);
2095
2096 if (err)
2097 goto try_again;
2098
2099 api_ver = IWL_UCODE_API(priv->ucode_ver);
2100 build = pieces.build;
2101
2102 /*
2103 * api_ver should match the api version forming part of the
2104 * firmware filename ... but we don't check for that and only rely
2105 * on the API version read from firmware header from here on forward
2106 */
2107 /* no api version check required for experimental uCode */
2108 if (priv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
2109 if (api_ver < api_min || api_ver > api_max) {
2110 IWL_ERR(priv,
2111 "Driver unable to support your firmware API. "
2112 "Driver supports v%u, firmware is v%u.\n",
2113 api_max, api_ver);
2114 goto try_again;
2115 }
2116
2117 if (api_ver != api_max)
2118 IWL_ERR(priv,
2119 "Firmware has old API version. Expected v%u, "
2120 "got v%u. New firmware can be obtained "
2121 "from http://www.intellinuxwireless.org.\n",
2122 api_max, api_ver);
2123 }
2124
2125 if (build)
2126 sprintf(buildstr, " build %u%s", build,
2127 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
2128 ? " (EXP)" : "");
2129 else
2130 buildstr[0] = '\0';
2131
2132 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u%s\n",
2133 IWL_UCODE_MAJOR(priv->ucode_ver),
2134 IWL_UCODE_MINOR(priv->ucode_ver),
2135 IWL_UCODE_API(priv->ucode_ver),
2136 IWL_UCODE_SERIAL(priv->ucode_ver),
2137 buildstr);
2138
2139 snprintf(priv->hw->wiphy->fw_version,
2140 sizeof(priv->hw->wiphy->fw_version),
2141 "%u.%u.%u.%u%s",
2142 IWL_UCODE_MAJOR(priv->ucode_ver),
2143 IWL_UCODE_MINOR(priv->ucode_ver),
2144 IWL_UCODE_API(priv->ucode_ver),
2145 IWL_UCODE_SERIAL(priv->ucode_ver),
2146 buildstr);
2147
2148 /*
2149 * For any of the failures below (before allocating pci memory)
2150 * we will try to load a version with a smaller API -- maybe the
2151 * user just got a corrupted version of the latest API.
2152 */
2153
2154 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2155 priv->ucode_ver);
2156 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %Zd\n",
2157 pieces.inst_size);
2158 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %Zd\n",
2159 pieces.data_size);
2160 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %Zd\n",
2161 pieces.init_size);
2162 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %Zd\n",
2163 pieces.init_data_size);
2164 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %Zd\n",
2165 pieces.boot_size);
2166
2167 /* Verify that uCode images will fit in card's SRAM */
2168 if (pieces.inst_size > priv->hw_params.max_inst_size) {
2169 IWL_ERR(priv, "uCode instr len %Zd too large to fit in\n",
2170 pieces.inst_size);
2171 goto try_again;
2172 }
2173
2174 if (pieces.data_size > priv->hw_params.max_data_size) {
2175 IWL_ERR(priv, "uCode data len %Zd too large to fit in\n",
2176 pieces.data_size);
2177 goto try_again;
2178 }
2179
2180 if (pieces.init_size > priv->hw_params.max_inst_size) {
2181 IWL_ERR(priv, "uCode init instr len %Zd too large to fit in\n",
2182 pieces.init_size);
2183 goto try_again;
2184 }
2185
2186 if (pieces.init_data_size > priv->hw_params.max_data_size) {
2187 IWL_ERR(priv, "uCode init data len %Zd too large to fit in\n",
2188 pieces.init_data_size);
2189 goto try_again;
2190 }
2191
2192 if (pieces.boot_size > priv->hw_params.max_bsm_size) {
2193 IWL_ERR(priv, "uCode boot instr len %Zd too large to fit in\n",
2194 pieces.boot_size);
2195 goto try_again;
2196 }
2197
2198 /* Allocate ucode buffers for card's bus-master loading ... */
2199
2200 /* Runtime instructions and 2 copies of data:
2201 * 1) unmodified from disk
2202 * 2) backup cache for save/restore during power-downs */
2203 priv->ucode_code.len = pieces.inst_size;
2204 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2205
2206 priv->ucode_data.len = pieces.data_size;
2207 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2208
2209 priv->ucode_data_backup.len = pieces.data_size;
2210 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2211
2212 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2213 !priv->ucode_data_backup.v_addr)
2214 goto err_pci_alloc;
2215
2216 /* Initialization instructions and data */
2217 if (pieces.init_size && pieces.init_data_size) {
2218 priv->ucode_init.len = pieces.init_size;
2219 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2220
2221 priv->ucode_init_data.len = pieces.init_data_size;
2222 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2223
2224 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2225 goto err_pci_alloc;
2226 }
2227
2228 /* Bootstrap (instructions only, no data) */
2229 if (pieces.boot_size) {
2230 priv->ucode_boot.len = pieces.boot_size;
2231 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2232
2233 if (!priv->ucode_boot.v_addr)
2234 goto err_pci_alloc;
2235 }
2236
2237 /* Now that we can no longer fail, copy information */
2238
2239 /*
2240 * The (size - 16) / 12 formula is based on the information recorded
2241 * for each event, which is of mode 1 (including timestamp) for all
2242 * new microcodes that include this information.
2243 */
2244 priv->_agn.init_evtlog_ptr = pieces.init_evtlog_ptr;
2245 if (pieces.init_evtlog_size)
2246 priv->_agn.init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
2247 else
2248 priv->_agn.init_evtlog_size =
2249 priv->cfg->base_params->max_event_log_size;
2250 priv->_agn.init_errlog_ptr = pieces.init_errlog_ptr;
2251 priv->_agn.inst_evtlog_ptr = pieces.inst_evtlog_ptr;
2252 if (pieces.inst_evtlog_size)
2253 priv->_agn.inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
2254 else
2255 priv->_agn.inst_evtlog_size =
2256 priv->cfg->base_params->max_event_log_size;
2257 priv->_agn.inst_errlog_ptr = pieces.inst_errlog_ptr;
2258
2259 if (ucode_capa.pan) {
2260 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
2261 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
2262 } else
2263 priv->sta_key_max_num = STA_KEY_MAX_NUM;
2264
2265 /* Copy images into buffers for card's bus-master reads ... */
2266
2267 /* Runtime instructions (first block of data in file) */
2268 IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode instr len %Zd\n",
2269 pieces.inst_size);
2270 memcpy(priv->ucode_code.v_addr, pieces.inst, pieces.inst_size);
2271
2272 IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2273 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2274
2275 /*
2276 * Runtime data
2277 * NOTE: Copy into backup buffer will be done in iwl_up()
2278 */
2279 IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode data len %Zd\n",
2280 pieces.data_size);
2281 memcpy(priv->ucode_data.v_addr, pieces.data, pieces.data_size);
2282 memcpy(priv->ucode_data_backup.v_addr, pieces.data, pieces.data_size);
2283
2284 /* Initialization instructions */
2285 if (pieces.init_size) {
2286 IWL_DEBUG_INFO(priv, "Copying (but not loading) init instr len %Zd\n",
2287 pieces.init_size);
2288 memcpy(priv->ucode_init.v_addr, pieces.init, pieces.init_size);
2289 }
2290
2291 /* Initialization data */
2292 if (pieces.init_data_size) {
2293 IWL_DEBUG_INFO(priv, "Copying (but not loading) init data len %Zd\n",
2294 pieces.init_data_size);
2295 memcpy(priv->ucode_init_data.v_addr, pieces.init_data,
2296 pieces.init_data_size);
2297 }
2298
2299 /* Bootstrap instructions */
2300 IWL_DEBUG_INFO(priv, "Copying (but not loading) boot instr len %Zd\n",
2301 pieces.boot_size);
2302 memcpy(priv->ucode_boot.v_addr, pieces.boot, pieces.boot_size);
2303
2304 /*
2305 * figure out the offset of chain noise reset and gain commands
2306 * base on the size of standard phy calibration commands table size
2307 */
2308 if (ucode_capa.standard_phy_calibration_size >
2309 IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
2310 ucode_capa.standard_phy_calibration_size =
2311 IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
2312
2313 priv->_agn.phy_calib_chain_noise_reset_cmd =
2314 ucode_capa.standard_phy_calibration_size;
2315 priv->_agn.phy_calib_chain_noise_gain_cmd =
2316 ucode_capa.standard_phy_calibration_size + 1;
2317
2318 /**************************************************
2319 * This is still part of probe() in a sense...
2320 *
2321 * 9. Setup and register with mac80211 and debugfs
2322 **************************************************/
2323 err = iwl_mac_setup_register(priv, &ucode_capa);
2324 if (err)
2325 goto out_unbind;
2326
2327 err = iwl_dbgfs_register(priv, DRV_NAME);
2328 if (err)
2329 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
2330
2331 err = sysfs_create_group(&priv->pci_dev->dev.kobj,
2332 &iwl_attribute_group);
2333 if (err) {
2334 IWL_ERR(priv, "failed to create sysfs device attributes\n");
2335 goto out_unbind;
2336 }
2337
2338 /* We have our copies now, allow OS release its copies */
2339 release_firmware(ucode_raw);
2340 complete(&priv->_agn.firmware_loading_complete);
2341 return;
2342
2343 try_again:
2344 /* try next, if any */
2345 if (iwl_request_firmware(priv, false))
2346 goto out_unbind;
2347 release_firmware(ucode_raw);
2348 return;
2349
2350 err_pci_alloc:
2351 IWL_ERR(priv, "failed to allocate pci memory\n");
2352 iwl_dealloc_ucode_pci(priv);
2353 out_unbind:
2354 complete(&priv->_agn.firmware_loading_complete);
2355 device_release_driver(&priv->pci_dev->dev);
2356 release_firmware(ucode_raw);
2357 }
2358
2359 static const char *desc_lookup_text[] = {
2360 "OK",
2361 "FAIL",
2362 "BAD_PARAM",
2363 "BAD_CHECKSUM",
2364 "NMI_INTERRUPT_WDG",
2365 "SYSASSERT",
2366 "FATAL_ERROR",
2367 "BAD_COMMAND",
2368 "HW_ERROR_TUNE_LOCK",
2369 "HW_ERROR_TEMPERATURE",
2370 "ILLEGAL_CHAN_FREQ",
2371 "VCC_NOT_STABLE",
2372 "FH_ERROR",
2373 "NMI_INTERRUPT_HOST",
2374 "NMI_INTERRUPT_ACTION_PT",
2375 "NMI_INTERRUPT_UNKNOWN",
2376 "UCODE_VERSION_MISMATCH",
2377 "HW_ERROR_ABS_LOCK",
2378 "HW_ERROR_CAL_LOCK_FAIL",
2379 "NMI_INTERRUPT_INST_ACTION_PT",
2380 "NMI_INTERRUPT_DATA_ACTION_PT",
2381 "NMI_TRM_HW_ER",
2382 "NMI_INTERRUPT_TRM",
2383 "NMI_INTERRUPT_BREAK_POINT"
2384 "DEBUG_0",
2385 "DEBUG_1",
2386 "DEBUG_2",
2387 "DEBUG_3",
2388 };
2389
2390 static struct { char *name; u8 num; } advanced_lookup[] = {
2391 { "NMI_INTERRUPT_WDG", 0x34 },
2392 { "SYSASSERT", 0x35 },
2393 { "UCODE_VERSION_MISMATCH", 0x37 },
2394 { "BAD_COMMAND", 0x38 },
2395 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
2396 { "FATAL_ERROR", 0x3D },
2397 { "NMI_TRM_HW_ERR", 0x46 },
2398 { "NMI_INTERRUPT_TRM", 0x4C },
2399 { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
2400 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
2401 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
2402 { "NMI_INTERRUPT_HOST", 0x66 },
2403 { "NMI_INTERRUPT_ACTION_PT", 0x7C },
2404 { "NMI_INTERRUPT_UNKNOWN", 0x84 },
2405 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
2406 { "ADVANCED_SYSASSERT", 0 },
2407 };
2408
2409 static const char *desc_lookup(u32 num)
2410 {
2411 int i;
2412 int max = ARRAY_SIZE(desc_lookup_text);
2413
2414 if (num < max)
2415 return desc_lookup_text[num];
2416
2417 max = ARRAY_SIZE(advanced_lookup) - 1;
2418 for (i = 0; i < max; i++) {
2419 if (advanced_lookup[i].num == num)
2420 break;;
2421 }
2422 return advanced_lookup[i].name;
2423 }
2424
2425 #define ERROR_START_OFFSET (1 * sizeof(u32))
2426 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
2427
2428 void iwl_dump_nic_error_log(struct iwl_priv *priv)
2429 {
2430 u32 data2, line;
2431 u32 desc, time, count, base, data1;
2432 u32 blink1, blink2, ilink1, ilink2;
2433 u32 pc, hcmd;
2434
2435 if (priv->ucode_type == UCODE_INIT) {
2436 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
2437 if (!base)
2438 base = priv->_agn.init_errlog_ptr;
2439 } else {
2440 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
2441 if (!base)
2442 base = priv->_agn.inst_errlog_ptr;
2443 }
2444
2445 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
2446 IWL_ERR(priv,
2447 "Not valid error log pointer 0x%08X for %s uCode\n",
2448 base, (priv->ucode_type == UCODE_INIT) ? "Init" : "RT");
2449 return;
2450 }
2451
2452 count = iwl_read_targ_mem(priv, base);
2453
2454 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
2455 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
2456 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
2457 priv->status, count);
2458 }
2459
2460 desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
2461 priv->isr_stats.err_code = desc;
2462 pc = iwl_read_targ_mem(priv, base + 2 * sizeof(u32));
2463 blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
2464 blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
2465 ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
2466 ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
2467 data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
2468 data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
2469 line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
2470 time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
2471 hcmd = iwl_read_targ_mem(priv, base + 22 * sizeof(u32));
2472
2473 trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, data2, line,
2474 blink1, blink2, ilink1, ilink2);
2475
2476 IWL_ERR(priv, "Desc Time "
2477 "data1 data2 line\n");
2478 IWL_ERR(priv, "%-28s (0x%04X) %010u 0x%08X 0x%08X %u\n",
2479 desc_lookup(desc), desc, time, data1, data2, line);
2480 IWL_ERR(priv, "pc blink1 blink2 ilink1 ilink2 hcmd\n");
2481 IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X 0x%05X 0x%05X\n",
2482 pc, blink1, blink2, ilink1, ilink2, hcmd);
2483 }
2484
2485 #define EVENT_START_OFFSET (4 * sizeof(u32))
2486
2487 /**
2488 * iwl_print_event_log - Dump error event log to syslog
2489 *
2490 */
2491 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
2492 u32 num_events, u32 mode,
2493 int pos, char **buf, size_t bufsz)
2494 {
2495 u32 i;
2496 u32 base; /* SRAM byte address of event log header */
2497 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
2498 u32 ptr; /* SRAM byte address of log data */
2499 u32 ev, time, data; /* event log data */
2500 unsigned long reg_flags;
2501
2502 if (num_events == 0)
2503 return pos;
2504
2505 if (priv->ucode_type == UCODE_INIT) {
2506 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
2507 if (!base)
2508 base = priv->_agn.init_evtlog_ptr;
2509 } else {
2510 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2511 if (!base)
2512 base = priv->_agn.inst_evtlog_ptr;
2513 }
2514
2515 if (mode == 0)
2516 event_size = 2 * sizeof(u32);
2517 else
2518 event_size = 3 * sizeof(u32);
2519
2520 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
2521
2522 /* Make sure device is powered up for SRAM reads */
2523 spin_lock_irqsave(&priv->reg_lock, reg_flags);
2524 iwl_grab_nic_access(priv);
2525
2526 /* Set starting address; reads will auto-increment */
2527 _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
2528 rmb();
2529
2530 /* "time" is actually "data" for mode 0 (no timestamp).
2531 * place event id # at far right for easier visual parsing. */
2532 for (i = 0; i < num_events; i++) {
2533 ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2534 time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2535 if (mode == 0) {
2536 /* data, ev */
2537 if (bufsz) {
2538 pos += scnprintf(*buf + pos, bufsz - pos,
2539 "EVT_LOG:0x%08x:%04u\n",
2540 time, ev);
2541 } else {
2542 trace_iwlwifi_dev_ucode_event(priv, 0,
2543 time, ev);
2544 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
2545 time, ev);
2546 }
2547 } else {
2548 data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2549 if (bufsz) {
2550 pos += scnprintf(*buf + pos, bufsz - pos,
2551 "EVT_LOGT:%010u:0x%08x:%04u\n",
2552 time, data, ev);
2553 } else {
2554 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
2555 time, data, ev);
2556 trace_iwlwifi_dev_ucode_event(priv, time,
2557 data, ev);
2558 }
2559 }
2560 }
2561
2562 /* Allow device to power down */
2563 iwl_release_nic_access(priv);
2564 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
2565 return pos;
2566 }
2567
2568 /**
2569 * iwl_print_last_event_logs - Dump the newest # of event log to syslog
2570 */
2571 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
2572 u32 num_wraps, u32 next_entry,
2573 u32 size, u32 mode,
2574 int pos, char **buf, size_t bufsz)
2575 {
2576 /*
2577 * display the newest DEFAULT_LOG_ENTRIES entries
2578 * i.e the entries just before the next ont that uCode would fill.
2579 */
2580 if (num_wraps) {
2581 if (next_entry < size) {
2582 pos = iwl_print_event_log(priv,
2583 capacity - (size - next_entry),
2584 size - next_entry, mode,
2585 pos, buf, bufsz);
2586 pos = iwl_print_event_log(priv, 0,
2587 next_entry, mode,
2588 pos, buf, bufsz);
2589 } else
2590 pos = iwl_print_event_log(priv, next_entry - size,
2591 size, mode, pos, buf, bufsz);
2592 } else {
2593 if (next_entry < size) {
2594 pos = iwl_print_event_log(priv, 0, next_entry,
2595 mode, pos, buf, bufsz);
2596 } else {
2597 pos = iwl_print_event_log(priv, next_entry - size,
2598 size, mode, pos, buf, bufsz);
2599 }
2600 }
2601 return pos;
2602 }
2603
2604 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
2605
2606 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
2607 char **buf, bool display)
2608 {
2609 u32 base; /* SRAM byte address of event log header */
2610 u32 capacity; /* event log capacity in # entries */
2611 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
2612 u32 num_wraps; /* # times uCode wrapped to top of log */
2613 u32 next_entry; /* index of next entry to be written by uCode */
2614 u32 size; /* # entries that we'll print */
2615 u32 logsize;
2616 int pos = 0;
2617 size_t bufsz = 0;
2618
2619 if (priv->ucode_type == UCODE_INIT) {
2620 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
2621 logsize = priv->_agn.init_evtlog_size;
2622 if (!base)
2623 base = priv->_agn.init_evtlog_ptr;
2624 } else {
2625 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2626 logsize = priv->_agn.inst_evtlog_size;
2627 if (!base)
2628 base = priv->_agn.inst_evtlog_ptr;
2629 }
2630
2631 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
2632 IWL_ERR(priv,
2633 "Invalid event log pointer 0x%08X for %s uCode\n",
2634 base, (priv->ucode_type == UCODE_INIT) ? "Init" : "RT");
2635 return -EINVAL;
2636 }
2637
2638 /* event log header */
2639 capacity = iwl_read_targ_mem(priv, base);
2640 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
2641 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
2642 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
2643
2644 if (capacity > logsize) {
2645 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
2646 capacity, logsize);
2647 capacity = logsize;
2648 }
2649
2650 if (next_entry > logsize) {
2651 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
2652 next_entry, logsize);
2653 next_entry = logsize;
2654 }
2655
2656 size = num_wraps ? capacity : next_entry;
2657
2658 /* bail out if nothing in log */
2659 if (size == 0) {
2660 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
2661 return pos;
2662 }
2663
2664 /* enable/disable bt channel announcement */
2665 priv->bt_ch_announce = iwlagn_bt_ch_announce;
2666
2667 #ifdef CONFIG_IWLWIFI_DEBUG
2668 if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log)
2669 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2670 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2671 #else
2672 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2673 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2674 #endif
2675 IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
2676 size);
2677
2678 #ifdef CONFIG_IWLWIFI_DEBUG
2679 if (display) {
2680 if (full_log)
2681 bufsz = capacity * 48;
2682 else
2683 bufsz = size * 48;
2684 *buf = kmalloc(bufsz, GFP_KERNEL);
2685 if (!*buf)
2686 return -ENOMEM;
2687 }
2688 if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
2689 /*
2690 * if uCode has wrapped back to top of log,
2691 * start at the oldest entry,
2692 * i.e the next one that uCode would fill.
2693 */
2694 if (num_wraps)
2695 pos = iwl_print_event_log(priv, next_entry,
2696 capacity - next_entry, mode,
2697 pos, buf, bufsz);
2698 /* (then/else) start at top of log */
2699 pos = iwl_print_event_log(priv, 0,
2700 next_entry, mode, pos, buf, bufsz);
2701 } else
2702 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2703 next_entry, size, mode,
2704 pos, buf, bufsz);
2705 #else
2706 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2707 next_entry, size, mode,
2708 pos, buf, bufsz);
2709 #endif
2710 return pos;
2711 }
2712
2713 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
2714 {
2715 struct iwl_ct_kill_config cmd;
2716 struct iwl_ct_kill_throttling_config adv_cmd;
2717 unsigned long flags;
2718 int ret = 0;
2719
2720 spin_lock_irqsave(&priv->lock, flags);
2721 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2722 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
2723 spin_unlock_irqrestore(&priv->lock, flags);
2724 priv->thermal_throttle.ct_kill_toggle = false;
2725
2726 if (priv->cfg->base_params->support_ct_kill_exit) {
2727 adv_cmd.critical_temperature_enter =
2728 cpu_to_le32(priv->hw_params.ct_kill_threshold);
2729 adv_cmd.critical_temperature_exit =
2730 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
2731
2732 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2733 sizeof(adv_cmd), &adv_cmd);
2734 if (ret)
2735 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2736 else
2737 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2738 "succeeded, "
2739 "critical temperature enter is %d,"
2740 "exit is %d\n",
2741 priv->hw_params.ct_kill_threshold,
2742 priv->hw_params.ct_kill_exit_threshold);
2743 } else {
2744 cmd.critical_temperature_R =
2745 cpu_to_le32(priv->hw_params.ct_kill_threshold);
2746
2747 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2748 sizeof(cmd), &cmd);
2749 if (ret)
2750 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2751 else
2752 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2753 "succeeded, "
2754 "critical temperature is %d\n",
2755 priv->hw_params.ct_kill_threshold);
2756 }
2757 }
2758
2759 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
2760 {
2761 struct iwl_calib_cfg_cmd calib_cfg_cmd;
2762 struct iwl_host_cmd cmd = {
2763 .id = CALIBRATION_CFG_CMD,
2764 .len = sizeof(struct iwl_calib_cfg_cmd),
2765 .data = &calib_cfg_cmd,
2766 };
2767
2768 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
2769 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_INIT_CFG_ALL;
2770 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
2771
2772 return iwl_send_cmd(priv, &cmd);
2773 }
2774
2775
2776 /**
2777 * iwl_alive_start - called after REPLY_ALIVE notification received
2778 * from protocol/runtime uCode (initialization uCode's
2779 * Alive gets handled by iwl_init_alive_start()).
2780 */
2781 static void iwl_alive_start(struct iwl_priv *priv)
2782 {
2783 int ret = 0;
2784 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2785
2786 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2787
2788 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2789 /* We had an error bringing up the hardware, so take it
2790 * all the way back down so we can try again */
2791 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2792 goto restart;
2793 }
2794
2795 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2796 * This is a paranoid check, because we would not have gotten the
2797 * "runtime" alive if code weren't properly loaded. */
2798 if (iwl_verify_ucode(priv)) {
2799 /* Runtime instruction load was bad;
2800 * take it all the way back down so we can try again */
2801 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2802 goto restart;
2803 }
2804
2805 ret = priv->cfg->ops->lib->alive_notify(priv);
2806 if (ret) {
2807 IWL_WARN(priv,
2808 "Could not complete ALIVE transition [ntf]: %d\n", ret);
2809 goto restart;
2810 }
2811
2812 if (priv->hw_params.calib_rt_cfg)
2813 iwlagn_send_calib_cfg_rt(priv, priv->hw_params.calib_rt_cfg);
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 if (priv->cfg->bt_params &&
2831 priv->cfg->bt_params->advanced_bt_coexist) {
2832 /* Configure Bluetooth device coexistence support */
2833 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
2834 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
2835 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
2836 priv->cfg->ops->hcmd->send_bt_config(priv);
2837 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
2838 if (bt_coex_active && priv->iw_mode != NL80211_IFTYPE_ADHOC)
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 ieee80211_wake_queues(priv->hw);
2848
2849 priv->active_rate = IWL_RATES_MASK;
2850
2851 /* Configure Tx antenna selection based on H/W config */
2852 if (priv->cfg->ops->hcmd->set_tx_ant)
2853 priv->cfg->ops->hcmd->set_tx_ant(priv, priv->cfg->valid_tx_ant);
2854
2855 if (iwl_is_associated_ctx(ctx)) {
2856 struct iwl_rxon_cmd *active_rxon =
2857 (struct iwl_rxon_cmd *)&ctx->active;
2858 /* apply any changes in staging */
2859 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
2860 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2861 } else {
2862 struct iwl_rxon_context *tmp;
2863 /* Initialize our rx_config data */
2864 for_each_context(priv, tmp)
2865 iwl_connection_init_rx_config(priv, tmp);
2866
2867 if (priv->cfg->ops->hcmd->set_rxon_chain)
2868 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
2869 }
2870
2871 if (priv->cfg->bt_params &&
2872 !priv->cfg->bt_params->advanced_bt_coexist) {
2873 /* Configure Bluetooth device coexistence support */
2874 priv->cfg->ops->hcmd->send_bt_config(priv);
2875 }
2876
2877 iwl_reset_run_time_calib(priv);
2878
2879 /* Configure the adapter for unassociated operation */
2880 iwlcore_commit_rxon(priv, ctx);
2881
2882 /* At this point, the NIC is initialized and operational */
2883 iwl_rf_kill_ct_config(priv);
2884
2885 iwl_leds_init(priv);
2886
2887 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2888 set_bit(STATUS_READY, &priv->status);
2889 wake_up_interruptible(&priv->wait_command_queue);
2890
2891 iwl_power_update_mode(priv, true);
2892 IWL_DEBUG_INFO(priv, "Updated power mode\n");
2893
2894
2895 return;
2896
2897 restart:
2898 queue_work(priv->workqueue, &priv->restart);
2899 }
2900
2901 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2902
2903 static void __iwl_down(struct iwl_priv *priv)
2904 {
2905 unsigned long flags;
2906 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2907
2908 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2909
2910 iwl_scan_cancel_timeout(priv, 200);
2911
2912 exit_pending = test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
2913
2914 /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
2915 * to prevent rearm timer */
2916 if (priv->cfg->ops->lib->recover_from_tx_stall)
2917 del_timer_sync(&priv->monitor_recover);
2918
2919 iwl_clear_ucode_stations(priv, NULL);
2920 iwl_dealloc_bcast_stations(priv);
2921 iwl_clear_driver_stations(priv);
2922
2923 /* reset BT coex data */
2924 priv->bt_status = 0;
2925 if (priv->cfg->bt_params)
2926 priv->bt_traffic_load =
2927 priv->cfg->bt_params->bt_init_traffic_load;
2928 else
2929 priv->bt_traffic_load = 0;
2930 priv->bt_sco_active = false;
2931 priv->bt_full_concurrent = false;
2932 priv->bt_ci_compliance = 0;
2933
2934 /* Unblock any waiting calls */
2935 wake_up_interruptible_all(&priv->wait_command_queue);
2936
2937 /* Wipe out the EXIT_PENDING status bit if we are not actually
2938 * exiting the module */
2939 if (!exit_pending)
2940 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2941
2942 /* stop and reset the on-board processor */
2943 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2944
2945 /* tell the device to stop sending interrupts */
2946 spin_lock_irqsave(&priv->lock, flags);
2947 iwl_disable_interrupts(priv);
2948 spin_unlock_irqrestore(&priv->lock, flags);
2949 iwl_synchronize_irq(priv);
2950
2951 if (priv->mac80211_registered)
2952 ieee80211_stop_queues(priv->hw);
2953
2954 /* If we have not previously called iwl_init() then
2955 * clear all bits but the RF Kill bit and return */
2956 if (!iwl_is_init(priv)) {
2957 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2958 STATUS_RF_KILL_HW |
2959 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2960 STATUS_GEO_CONFIGURED |
2961 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2962 STATUS_EXIT_PENDING;
2963 goto exit;
2964 }
2965
2966 /* ...otherwise clear out all the status bits but the RF Kill
2967 * bit and continue taking the NIC down. */
2968 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2969 STATUS_RF_KILL_HW |
2970 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2971 STATUS_GEO_CONFIGURED |
2972 test_bit(STATUS_FW_ERROR, &priv->status) <<
2973 STATUS_FW_ERROR |
2974 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2975 STATUS_EXIT_PENDING;
2976
2977 /* device going down, Stop using ICT table */
2978 iwl_disable_ict(priv);
2979
2980 iwlagn_txq_ctx_stop(priv);
2981 iwlagn_rxq_stop(priv);
2982
2983 /* Power-down device's busmaster DMA clocks */
2984 iwl_write_prph(priv, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT);
2985 udelay(5);
2986
2987 /* Make sure (redundant) we've released our request to stay awake */
2988 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2989
2990 /* Stop the device, and put it in low power state */
2991 iwl_apm_stop(priv);
2992
2993 exit:
2994 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2995
2996 if (priv->ibss_beacon)
2997 dev_kfree_skb(priv->ibss_beacon);
2998 priv->ibss_beacon = NULL;
2999
3000 /* clear out any free frames */
3001 iwl_clear_free_frames(priv);
3002 }
3003
3004 static void iwl_down(struct iwl_priv *priv)
3005 {
3006 mutex_lock(&priv->mutex);
3007 __iwl_down(priv);
3008 mutex_unlock(&priv->mutex);
3009
3010 iwl_cancel_deferred_work(priv);
3011 }
3012
3013 #define HW_READY_TIMEOUT (50)
3014
3015 static int iwl_set_hw_ready(struct iwl_priv *priv)
3016 {
3017 int ret = 0;
3018
3019 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
3020 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY);
3021
3022 /* See if we got it */
3023 ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
3024 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
3025 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
3026 HW_READY_TIMEOUT);
3027 if (ret != -ETIMEDOUT)
3028 priv->hw_ready = true;
3029 else
3030 priv->hw_ready = false;
3031
3032 IWL_DEBUG_INFO(priv, "hardware %s\n",
3033 (priv->hw_ready == 1) ? "ready" : "not ready");
3034 return ret;
3035 }
3036
3037 static int iwl_prepare_card_hw(struct iwl_priv *priv)
3038 {
3039 int ret = 0;
3040
3041 IWL_DEBUG_INFO(priv, "iwl_prepare_card_hw enter\n");
3042
3043 ret = iwl_set_hw_ready(priv);
3044 if (priv->hw_ready)
3045 return ret;
3046
3047 /* If HW is not ready, prepare the conditions to check again */
3048 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
3049 CSR_HW_IF_CONFIG_REG_PREPARE);
3050
3051 ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
3052 ~CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE,
3053 CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, 150000);
3054
3055 /* HW should be ready by now, check again. */
3056 if (ret != -ETIMEDOUT)
3057 iwl_set_hw_ready(priv);
3058
3059 return ret;
3060 }
3061
3062 #define MAX_HW_RESTARTS 5
3063
3064 static int __iwl_up(struct iwl_priv *priv)
3065 {
3066 struct iwl_rxon_context *ctx;
3067 int i;
3068 int ret;
3069
3070 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3071 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
3072 return -EIO;
3073 }
3074
3075 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
3076 IWL_ERR(priv, "ucode not available for device bringup\n");
3077 return -EIO;
3078 }
3079
3080 for_each_context(priv, ctx) {
3081 ret = iwlagn_alloc_bcast_station(priv, ctx);
3082 if (ret) {
3083 iwl_dealloc_bcast_stations(priv);
3084 return ret;
3085 }
3086 }
3087
3088 iwl_prepare_card_hw(priv);
3089
3090 if (!priv->hw_ready) {
3091 IWL_WARN(priv, "Exit HW not ready\n");
3092 return -EIO;
3093 }
3094
3095 /* If platform's RF_KILL switch is NOT set to KILL */
3096 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3097 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3098 else
3099 set_bit(STATUS_RF_KILL_HW, &priv->status);
3100
3101 if (iwl_is_rfkill(priv)) {
3102 wiphy_rfkill_set_hw_state(priv->hw->wiphy, true);
3103
3104 iwl_enable_interrupts(priv);
3105 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
3106 return 0;
3107 }
3108
3109 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3110
3111 /* must be initialised before iwl_hw_nic_init */
3112 if (priv->valid_contexts != BIT(IWL_RXON_CTX_BSS))
3113 priv->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
3114 else
3115 priv->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
3116
3117 ret = iwlagn_hw_nic_init(priv);
3118 if (ret) {
3119 IWL_ERR(priv, "Unable to init nic\n");
3120 return ret;
3121 }
3122
3123 /* make sure rfkill handshake bits are cleared */
3124 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3125 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3126 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3127
3128 /* clear (again), then enable host interrupts */
3129 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3130 iwl_enable_interrupts(priv);
3131
3132 /* really make sure rfkill handshake bits are cleared */
3133 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3134 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3135
3136 /* Copy original ucode data image from disk into backup cache.
3137 * This will be used to initialize the on-board processor's
3138 * data SRAM for a clean start when the runtime program first loads. */
3139 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
3140 priv->ucode_data.len);
3141
3142 for (i = 0; i < MAX_HW_RESTARTS; i++) {
3143
3144 /* load bootstrap state machine,
3145 * load bootstrap program into processor's memory,
3146 * prepare to load the "initialize" uCode */
3147 ret = priv->cfg->ops->lib->load_ucode(priv);
3148
3149 if (ret) {
3150 IWL_ERR(priv, "Unable to set up bootstrap uCode: %d\n",
3151 ret);
3152 continue;
3153 }
3154
3155 /* start card; "initialize" will load runtime ucode */
3156 iwl_nic_start(priv);
3157
3158 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
3159
3160 return 0;
3161 }
3162
3163 set_bit(STATUS_EXIT_PENDING, &priv->status);
3164 __iwl_down(priv);
3165 clear_bit(STATUS_EXIT_PENDING, &priv->status);
3166
3167 /* tried to restart and config the device for as long as our
3168 * patience could withstand */
3169 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
3170 return -EIO;
3171 }
3172
3173
3174 /*****************************************************************************
3175 *
3176 * Workqueue callbacks
3177 *
3178 *****************************************************************************/
3179
3180 static void iwl_bg_init_alive_start(struct work_struct *data)
3181 {
3182 struct iwl_priv *priv =
3183 container_of(data, struct iwl_priv, init_alive_start.work);
3184
3185 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3186 return;
3187
3188 mutex_lock(&priv->mutex);
3189 priv->cfg->ops->lib->init_alive_start(priv);
3190 mutex_unlock(&priv->mutex);
3191 }
3192
3193 static void iwl_bg_alive_start(struct work_struct *data)
3194 {
3195 struct iwl_priv *priv =
3196 container_of(data, struct iwl_priv, alive_start.work);
3197
3198 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3199 return;
3200
3201 /* enable dram interrupt */
3202 iwl_reset_ict(priv);
3203
3204 mutex_lock(&priv->mutex);
3205 iwl_alive_start(priv);
3206 mutex_unlock(&priv->mutex);
3207 }
3208
3209 static void iwl_bg_run_time_calib_work(struct work_struct *work)
3210 {
3211 struct iwl_priv *priv = container_of(work, struct iwl_priv,
3212 run_time_calib_work);
3213
3214 mutex_lock(&priv->mutex);
3215
3216 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
3217 test_bit(STATUS_SCANNING, &priv->status)) {
3218 mutex_unlock(&priv->mutex);
3219 return;
3220 }
3221
3222 if (priv->start_calib) {
3223 if (priv->cfg->bt_params &&
3224 priv->cfg->bt_params->bt_statistics) {
3225 iwl_chain_noise_calibration(priv,
3226 (void *)&priv->_agn.statistics_bt);
3227 iwl_sensitivity_calibration(priv,
3228 (void *)&priv->_agn.statistics_bt);
3229 } else {
3230 iwl_chain_noise_calibration(priv,
3231 (void *)&priv->_agn.statistics);
3232 iwl_sensitivity_calibration(priv,
3233 (void *)&priv->_agn.statistics);
3234 }
3235 }
3236
3237 mutex_unlock(&priv->mutex);
3238 }
3239
3240 static void iwl_bg_restart(struct work_struct *data)
3241 {
3242 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3243
3244 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3245 return;
3246
3247 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
3248 struct iwl_rxon_context *ctx;
3249 bool bt_sco, bt_full_concurrent;
3250 u8 bt_ci_compliance;
3251 u8 bt_load;
3252 u8 bt_status;
3253
3254 mutex_lock(&priv->mutex);
3255 for_each_context(priv, ctx)
3256 ctx->vif = NULL;
3257 priv->is_open = 0;
3258
3259 /*
3260 * __iwl_down() will clear the BT status variables,
3261 * which is correct, but when we restart we really
3262 * want to keep them so restore them afterwards.
3263 *
3264 * The restart process will later pick them up and
3265 * re-configure the hw when we reconfigure the BT
3266 * command.
3267 */
3268 bt_sco = priv->bt_sco_active;
3269 bt_full_concurrent = priv->bt_full_concurrent;
3270 bt_ci_compliance = priv->bt_ci_compliance;
3271 bt_load = priv->bt_traffic_load;
3272 bt_status = priv->bt_status;
3273
3274 __iwl_down(priv);
3275
3276 priv->bt_sco_active = bt_sco;
3277 priv->bt_full_concurrent = bt_full_concurrent;
3278 priv->bt_ci_compliance = bt_ci_compliance;
3279 priv->bt_traffic_load = bt_load;
3280 priv->bt_status = bt_status;
3281
3282 mutex_unlock(&priv->mutex);
3283 iwl_cancel_deferred_work(priv);
3284 ieee80211_restart_hw(priv->hw);
3285 } else {
3286 iwl_down(priv);
3287
3288 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3289 return;
3290
3291 mutex_lock(&priv->mutex);
3292 __iwl_up(priv);
3293 mutex_unlock(&priv->mutex);
3294 }
3295 }
3296
3297 static void iwl_bg_rx_replenish(struct work_struct *data)
3298 {
3299 struct iwl_priv *priv =
3300 container_of(data, struct iwl_priv, rx_replenish);
3301
3302 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3303 return;
3304
3305 mutex_lock(&priv->mutex);
3306 iwlagn_rx_replenish(priv);
3307 mutex_unlock(&priv->mutex);
3308 }
3309
3310 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3311
3312 void iwl_post_associate(struct iwl_priv *priv, struct ieee80211_vif *vif)
3313 {
3314 struct iwl_rxon_context *ctx;
3315 struct ieee80211_conf *conf = NULL;
3316 int ret = 0;
3317
3318 if (!vif || !priv->is_open)
3319 return;
3320
3321 ctx = iwl_rxon_ctx_from_vif(vif);
3322
3323 if (vif->type == NL80211_IFTYPE_AP) {
3324 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
3325 return;
3326 }
3327
3328 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3329 return;
3330
3331 iwl_scan_cancel_timeout(priv, 200);
3332
3333 conf = ieee80211_get_hw_conf(priv->hw);
3334
3335 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3336 iwlcore_commit_rxon(priv, ctx);
3337
3338 ret = iwl_send_rxon_timing(priv, ctx);
3339 if (ret)
3340 IWL_WARN(priv, "RXON timing - "
3341 "Attempting to continue.\n");
3342
3343 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
3344
3345 iwl_set_rxon_ht(priv, &priv->current_ht_config);
3346
3347 if (priv->cfg->ops->hcmd->set_rxon_chain)
3348 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
3349
3350 ctx->staging.assoc_id = cpu_to_le16(vif->bss_conf.aid);
3351
3352 IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3353 vif->bss_conf.aid, vif->bss_conf.beacon_int);
3354
3355 if (vif->bss_conf.use_short_preamble)
3356 ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3357 else
3358 ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3359
3360 if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK) {
3361 if (vif->bss_conf.use_short_slot)
3362 ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
3363 else
3364 ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3365 }
3366
3367 iwlcore_commit_rxon(priv, ctx);
3368
3369 IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3370 vif->bss_conf.aid, ctx->active.bssid_addr);
3371
3372 switch (vif->type) {
3373 case NL80211_IFTYPE_STATION:
3374 break;
3375 case NL80211_IFTYPE_ADHOC:
3376 iwl_send_beacon_cmd(priv);
3377 break;
3378 default:
3379 IWL_ERR(priv, "%s Should not be called in %d mode\n",
3380 __func__, vif->type);
3381 break;
3382 }
3383
3384 /* the chain noise calibration will enabled PM upon completion
3385 * If chain noise has already been run, then we need to enable
3386 * power management here */
3387 if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
3388 iwl_power_update_mode(priv, false);
3389
3390 /* Enable Rx differential gain and sensitivity calibrations */
3391 iwl_chain_noise_reset(priv);
3392 priv->start_calib = 1;
3393
3394 }
3395
3396 /*****************************************************************************
3397 *
3398 * mac80211 entry point functions
3399 *
3400 *****************************************************************************/
3401
3402 #define UCODE_READY_TIMEOUT (4 * HZ)
3403
3404 /*
3405 * Not a mac80211 entry point function, but it fits in with all the
3406 * other mac80211 functions grouped here.
3407 */
3408 static int iwl_mac_setup_register(struct iwl_priv *priv,
3409 struct iwlagn_ucode_capabilities *capa)
3410 {
3411 int ret;
3412 struct ieee80211_hw *hw = priv->hw;
3413 struct iwl_rxon_context *ctx;
3414
3415 hw->rate_control_algorithm = "iwl-agn-rs";
3416
3417 /* Tell mac80211 our characteristics */
3418 hw->flags = IEEE80211_HW_SIGNAL_DBM |
3419 IEEE80211_HW_AMPDU_AGGREGATION |
3420 IEEE80211_HW_NEED_DTIM_PERIOD |
3421 IEEE80211_HW_SPECTRUM_MGMT;
3422
3423 if (!priv->cfg->base_params->broken_powersave)
3424 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
3425 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
3426
3427 if (priv->cfg->sku & IWL_SKU_N)
3428 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
3429 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
3430
3431 hw->sta_data_size = sizeof(struct iwl_station_priv);
3432 hw->vif_data_size = sizeof(struct iwl_vif_priv);
3433
3434 for_each_context(priv, ctx) {
3435 hw->wiphy->interface_modes |= ctx->interface_modes;
3436 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
3437 }
3438
3439 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
3440 WIPHY_FLAG_DISABLE_BEACON_HINTS;
3441
3442 /*
3443 * For now, disable PS by default because it affects
3444 * RX performance significantly.
3445 */
3446 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
3447
3448 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
3449 /* we create the 802.11 header and a zero-length SSID element */
3450 hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2;
3451
3452 /* Default value; 4 EDCA QOS priorities */
3453 hw->queues = 4;
3454
3455 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
3456
3457 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
3458 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3459 &priv->bands[IEEE80211_BAND_2GHZ];
3460 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
3461 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
3462 &priv->bands[IEEE80211_BAND_5GHZ];
3463
3464 ret = ieee80211_register_hw(priv->hw);
3465 if (ret) {
3466 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
3467 return ret;
3468 }
3469 priv->mac80211_registered = 1;
3470
3471 return 0;
3472 }
3473
3474
3475 static int iwl_mac_start(struct ieee80211_hw *hw)
3476 {
3477 struct iwl_priv *priv = hw->priv;
3478 int ret;
3479
3480 IWL_DEBUG_MAC80211(priv, "enter\n");
3481
3482 /* we should be verifying the device is ready to be opened */
3483 mutex_lock(&priv->mutex);
3484 ret = __iwl_up(priv);
3485 mutex_unlock(&priv->mutex);
3486
3487 if (ret)
3488 return ret;
3489
3490 if (iwl_is_rfkill(priv))
3491 goto out;
3492
3493 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
3494
3495 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
3496 * mac80211 will not be run successfully. */
3497 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3498 test_bit(STATUS_READY, &priv->status),
3499 UCODE_READY_TIMEOUT);
3500 if (!ret) {
3501 if (!test_bit(STATUS_READY, &priv->status)) {
3502 IWL_ERR(priv, "START_ALIVE timeout after %dms.\n",
3503 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3504 return -ETIMEDOUT;
3505 }
3506 }
3507
3508 iwl_led_start(priv);
3509
3510 out:
3511 priv->is_open = 1;
3512 IWL_DEBUG_MAC80211(priv, "leave\n");
3513 return 0;
3514 }
3515
3516 static void iwl_mac_stop(struct ieee80211_hw *hw)
3517 {
3518 struct iwl_priv *priv = hw->priv;
3519
3520 IWL_DEBUG_MAC80211(priv, "enter\n");
3521
3522 if (!priv->is_open)
3523 return;
3524
3525 priv->is_open = 0;
3526
3527 iwl_down(priv);
3528
3529 flush_workqueue(priv->workqueue);
3530
3531 /* enable interrupts again in order to receive rfkill changes */
3532 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3533 iwl_enable_interrupts(priv);
3534
3535 IWL_DEBUG_MAC80211(priv, "leave\n");
3536 }
3537
3538 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3539 {
3540 struct iwl_priv *priv = hw->priv;
3541
3542 IWL_DEBUG_MACDUMP(priv, "enter\n");
3543
3544 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3545 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3546
3547 if (iwlagn_tx_skb(priv, skb))
3548 dev_kfree_skb_any(skb);
3549
3550 IWL_DEBUG_MACDUMP(priv, "leave\n");
3551 return NETDEV_TX_OK;
3552 }
3553
3554 void iwl_config_ap(struct iwl_priv *priv, struct ieee80211_vif *vif)
3555 {
3556 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
3557 int ret = 0;
3558
3559 lockdep_assert_held(&priv->mutex);
3560
3561 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3562 return;
3563
3564 /* The following should be done only at AP bring up */
3565 if (!iwl_is_associated_ctx(ctx)) {
3566
3567 /* RXON - unassoc (to set timing command) */
3568 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3569 iwlcore_commit_rxon(priv, ctx);
3570
3571 /* RXON Timing */
3572 ret = iwl_send_rxon_timing(priv, ctx);
3573 if (ret)
3574 IWL_WARN(priv, "RXON timing failed - "
3575 "Attempting to continue.\n");
3576
3577 /* AP has all antennas */
3578 priv->chain_noise_data.active_chains =
3579 priv->hw_params.valid_rx_ant;
3580 iwl_set_rxon_ht(priv, &priv->current_ht_config);
3581 if (priv->cfg->ops->hcmd->set_rxon_chain)
3582 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
3583
3584 ctx->staging.assoc_id = 0;
3585
3586 if (vif->bss_conf.use_short_preamble)
3587 ctx->staging.flags |=
3588 RXON_FLG_SHORT_PREAMBLE_MSK;
3589 else
3590 ctx->staging.flags &=
3591 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3592
3593 if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK) {
3594 if (vif->bss_conf.use_short_slot)
3595 ctx->staging.flags |=
3596 RXON_FLG_SHORT_SLOT_MSK;
3597 else
3598 ctx->staging.flags &=
3599 ~RXON_FLG_SHORT_SLOT_MSK;
3600 }
3601 /* need to send beacon cmd before committing assoc RXON! */
3602 iwl_send_beacon_cmd(priv);
3603 /* restore RXON assoc */
3604 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
3605 iwlcore_commit_rxon(priv, ctx);
3606 }
3607 iwl_send_beacon_cmd(priv);
3608
3609 /* FIXME - we need to add code here to detect a totally new
3610 * configuration, reset the AP, unassoc, rxon timing, assoc,
3611 * clear sta table, add BCAST sta... */
3612 }
3613
3614 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
3615 struct ieee80211_vif *vif,
3616 struct ieee80211_key_conf *keyconf,
3617 struct ieee80211_sta *sta,
3618 u32 iv32, u16 *phase1key)
3619 {
3620
3621 struct iwl_priv *priv = hw->priv;
3622 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
3623
3624 IWL_DEBUG_MAC80211(priv, "enter\n");
3625
3626 iwl_update_tkip_key(priv, vif_priv->ctx, keyconf, sta,
3627 iv32, phase1key);
3628
3629 IWL_DEBUG_MAC80211(priv, "leave\n");
3630 }
3631
3632 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3633 struct ieee80211_vif *vif,
3634 struct ieee80211_sta *sta,
3635 struct ieee80211_key_conf *key)
3636 {
3637 struct iwl_priv *priv = hw->priv;
3638 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
3639 struct iwl_rxon_context *ctx = vif_priv->ctx;
3640 int ret;
3641 u8 sta_id;
3642 bool is_default_wep_key = false;
3643
3644 IWL_DEBUG_MAC80211(priv, "enter\n");
3645
3646 if (priv->cfg->mod_params->sw_crypto) {
3647 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
3648 return -EOPNOTSUPP;
3649 }
3650
3651 sta_id = iwl_sta_id_or_broadcast(priv, vif_priv->ctx, sta);
3652 if (sta_id == IWL_INVALID_STATION)
3653 return -EINVAL;
3654
3655 mutex_lock(&priv->mutex);
3656 iwl_scan_cancel_timeout(priv, 100);
3657
3658 /*
3659 * If we are getting WEP group key and we didn't receive any key mapping
3660 * so far, we are in legacy wep mode (group key only), otherwise we are
3661 * in 1X mode.
3662 * In legacy wep mode, we use another host command to the uCode.
3663 */
3664 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
3665 key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
3666 !sta) {
3667 if (cmd == SET_KEY)
3668 is_default_wep_key = !ctx->key_mapping_keys;
3669 else
3670 is_default_wep_key =
3671 (key->hw_key_idx == HW_KEY_DEFAULT);
3672 }
3673
3674 switch (cmd) {
3675 case SET_KEY:
3676 if (is_default_wep_key)
3677 ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
3678 else
3679 ret = iwl_set_dynamic_key(priv, vif_priv->ctx,
3680 key, sta_id);
3681
3682 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
3683 break;
3684 case DISABLE_KEY:
3685 if (is_default_wep_key)
3686 ret = iwl_remove_default_wep_key(priv, ctx, key);
3687 else
3688 ret = iwl_remove_dynamic_key(priv, ctx, key, sta_id);
3689
3690 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
3691 break;
3692 default:
3693 ret = -EINVAL;
3694 }
3695
3696 mutex_unlock(&priv->mutex);
3697 IWL_DEBUG_MAC80211(priv, "leave\n");
3698
3699 return ret;
3700 }
3701
3702 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
3703 struct ieee80211_vif *vif,
3704 enum ieee80211_ampdu_mlme_action action,
3705 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3706 {
3707 struct iwl_priv *priv = hw->priv;
3708 int ret = -EINVAL;
3709
3710 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
3711 sta->addr, tid);
3712
3713 if (!(priv->cfg->sku & IWL_SKU_N))
3714 return -EACCES;
3715
3716 mutex_lock(&priv->mutex);
3717
3718 switch (action) {
3719 case IEEE80211_AMPDU_RX_START:
3720 IWL_DEBUG_HT(priv, "start Rx\n");
3721 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
3722 break;
3723 case IEEE80211_AMPDU_RX_STOP:
3724 IWL_DEBUG_HT(priv, "stop Rx\n");
3725 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
3726 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3727 ret = 0;
3728 break;
3729 case IEEE80211_AMPDU_TX_START:
3730 IWL_DEBUG_HT(priv, "start Tx\n");
3731 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
3732 if (ret == 0) {
3733 priv->_agn.agg_tids_count++;
3734 IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
3735 priv->_agn.agg_tids_count);
3736 }
3737 break;
3738 case IEEE80211_AMPDU_TX_STOP:
3739 IWL_DEBUG_HT(priv, "stop Tx\n");
3740 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
3741 if ((ret == 0) && (priv->_agn.agg_tids_count > 0)) {
3742 priv->_agn.agg_tids_count--;
3743 IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
3744 priv->_agn.agg_tids_count);
3745 }
3746 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3747 ret = 0;
3748 if (priv->cfg->ht_params &&
3749 priv->cfg->ht_params->use_rts_for_aggregation) {
3750 struct iwl_station_priv *sta_priv =
3751 (void *) sta->drv_priv;
3752 /*
3753 * switch off RTS/CTS if it was previously enabled
3754 */
3755
3756 sta_priv->lq_sta.lq.general_params.flags &=
3757 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
3758 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
3759 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
3760 }
3761 break;
3762 case IEEE80211_AMPDU_TX_OPERATIONAL:
3763 if (priv->cfg->ht_params &&
3764 priv->cfg->ht_params->use_rts_for_aggregation) {
3765 struct iwl_station_priv *sta_priv =
3766 (void *) sta->drv_priv;
3767
3768 /*
3769 * switch to RTS/CTS if it is the prefer protection
3770 * method for HT traffic
3771 */
3772
3773 sta_priv->lq_sta.lq.general_params.flags |=
3774 LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
3775 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
3776 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
3777 }
3778 ret = 0;
3779 break;
3780 }
3781 mutex_unlock(&priv->mutex);
3782
3783 return ret;
3784 }
3785
3786 static void iwl_mac_sta_notify(struct ieee80211_hw *hw,
3787 struct ieee80211_vif *vif,
3788 enum sta_notify_cmd cmd,
3789 struct ieee80211_sta *sta)
3790 {
3791 struct iwl_priv *priv = hw->priv;
3792 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
3793 int sta_id;
3794
3795 switch (cmd) {
3796 case STA_NOTIFY_SLEEP:
3797 WARN_ON(!sta_priv->client);
3798 sta_priv->asleep = true;
3799 if (atomic_read(&sta_priv->pending_frames) > 0)
3800 ieee80211_sta_block_awake(hw, sta, true);
3801 break;
3802 case STA_NOTIFY_AWAKE:
3803 WARN_ON(!sta_priv->client);
3804 if (!sta_priv->asleep)
3805 break;
3806 sta_priv->asleep = false;
3807 sta_id = iwl_sta_id(sta);
3808 if (sta_id != IWL_INVALID_STATION)
3809 iwl_sta_modify_ps_wake(priv, sta_id);
3810 break;
3811 default:
3812 break;
3813 }
3814 }
3815
3816 static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
3817 struct ieee80211_vif *vif,
3818 struct ieee80211_sta *sta)
3819 {
3820 struct iwl_priv *priv = hw->priv;
3821 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
3822 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
3823 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
3824 int ret;
3825 u8 sta_id;
3826
3827 IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
3828 sta->addr);
3829 mutex_lock(&priv->mutex);
3830 IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
3831 sta->addr);
3832 sta_priv->common.sta_id = IWL_INVALID_STATION;
3833
3834 atomic_set(&sta_priv->pending_frames, 0);
3835 if (vif->type == NL80211_IFTYPE_AP)
3836 sta_priv->client = true;
3837
3838 ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
3839 is_ap, sta, &sta_id);
3840 if (ret) {
3841 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
3842 sta->addr, ret);
3843 /* Should we return success if return code is EEXIST ? */
3844 mutex_unlock(&priv->mutex);
3845 return ret;
3846 }
3847
3848 sta_priv->common.sta_id = sta_id;
3849
3850 /* Initialize rate scaling */
3851 IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
3852 sta->addr);
3853 iwl_rs_rate_init(priv, sta, sta_id);
3854 mutex_unlock(&priv->mutex);
3855
3856 return 0;
3857 }
3858
3859 static void iwl_mac_channel_switch(struct ieee80211_hw *hw,
3860 struct ieee80211_channel_switch *ch_switch)
3861 {
3862 struct iwl_priv *priv = hw->priv;
3863 const struct iwl_channel_info *ch_info;
3864 struct ieee80211_conf *conf = &hw->conf;
3865 struct ieee80211_channel *channel = ch_switch->channel;
3866 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
3867 /*
3868 * MULTI-FIXME
3869 * When we add support for multiple interfaces, we need to
3870 * revisit this. The channel switch command in the device
3871 * only affects the BSS context, but what does that really
3872 * mean? And what if we get a CSA on the second interface?
3873 * This needs a lot of work.
3874 */
3875 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
3876 u16 ch;
3877 unsigned long flags = 0;
3878
3879 IWL_DEBUG_MAC80211(priv, "enter\n");
3880
3881 if (iwl_is_rfkill(priv))
3882 goto out_exit;
3883
3884 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
3885 test_bit(STATUS_SCANNING, &priv->status))
3886 goto out_exit;
3887
3888 if (!iwl_is_associated_ctx(ctx))
3889 goto out_exit;
3890
3891 /* channel switch in progress */
3892 if (priv->switch_rxon.switch_in_progress == true)
3893 goto out_exit;
3894
3895 mutex_lock(&priv->mutex);
3896 if (priv->cfg->ops->lib->set_channel_switch) {
3897
3898 ch = channel->hw_value;
3899 if (le16_to_cpu(ctx->active.channel) != ch) {
3900 ch_info = iwl_get_channel_info(priv,
3901 channel->band,
3902 ch);
3903 if (!is_channel_valid(ch_info)) {
3904 IWL_DEBUG_MAC80211(priv, "invalid channel\n");
3905 goto out;
3906 }
3907 spin_lock_irqsave(&priv->lock, flags);
3908
3909 priv->current_ht_config.smps = conf->smps_mode;
3910
3911 /* Configure HT40 channels */
3912 ctx->ht.enabled = conf_is_ht(conf);
3913 if (ctx->ht.enabled) {
3914 if (conf_is_ht40_minus(conf)) {
3915 ctx->ht.extension_chan_offset =
3916 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3917 ctx->ht.is_40mhz = true;
3918 } else if (conf_is_ht40_plus(conf)) {
3919 ctx->ht.extension_chan_offset =
3920 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3921 ctx->ht.is_40mhz = true;
3922 } else {
3923 ctx->ht.extension_chan_offset =
3924 IEEE80211_HT_PARAM_CHA_SEC_NONE;
3925 ctx->ht.is_40mhz = false;
3926 }
3927 } else
3928 ctx->ht.is_40mhz = false;
3929
3930 if ((le16_to_cpu(ctx->staging.channel) != ch))
3931 ctx->staging.flags = 0;
3932
3933 iwl_set_rxon_channel(priv, channel, ctx);
3934 iwl_set_rxon_ht(priv, ht_conf);
3935 iwl_set_flags_for_band(priv, ctx, channel->band,
3936 ctx->vif);
3937 spin_unlock_irqrestore(&priv->lock, flags);
3938
3939 iwl_set_rate(priv);
3940 /*
3941 * at this point, staging_rxon has the
3942 * configuration for channel switch
3943 */
3944 if (priv->cfg->ops->lib->set_channel_switch(priv,
3945 ch_switch))
3946 priv->switch_rxon.switch_in_progress = false;
3947 }
3948 }
3949 out:
3950 mutex_unlock(&priv->mutex);
3951 out_exit:
3952 if (!priv->switch_rxon.switch_in_progress)
3953 ieee80211_chswitch_done(ctx->vif, false);
3954 IWL_DEBUG_MAC80211(priv, "leave\n");
3955 }
3956
3957 static void iwlagn_configure_filter(struct ieee80211_hw *hw,
3958 unsigned int changed_flags,
3959 unsigned int *total_flags,
3960 u64 multicast)
3961 {
3962 struct iwl_priv *priv = hw->priv;
3963 __le32 filter_or = 0, filter_nand = 0;
3964 struct iwl_rxon_context *ctx;
3965
3966 #define CHK(test, flag) do { \
3967 if (*total_flags & (test)) \
3968 filter_or |= (flag); \
3969 else \
3970 filter_nand |= (flag); \
3971 } while (0)
3972
3973 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
3974 changed_flags, *total_flags);
3975
3976 CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
3977 CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK);
3978 CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
3979
3980 #undef CHK
3981
3982 mutex_lock(&priv->mutex);
3983
3984 for_each_context(priv, ctx) {
3985 ctx->staging.filter_flags &= ~filter_nand;
3986 ctx->staging.filter_flags |= filter_or;
3987 iwlcore_commit_rxon(priv, ctx);
3988 }
3989
3990 mutex_unlock(&priv->mutex);
3991
3992 /*
3993 * Receiving all multicast frames is always enabled by the
3994 * default flags setup in iwl_connection_init_rx_config()
3995 * since we currently do not support programming multicast
3996 * filters into the device.
3997 */
3998 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
3999 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
4000 }
4001
4002 static void iwl_mac_flush(struct ieee80211_hw *hw, bool drop)
4003 {
4004 struct iwl_priv *priv = hw->priv;
4005
4006 mutex_lock(&priv->mutex);
4007 IWL_DEBUG_MAC80211(priv, "enter\n");
4008
4009 /* do not support "flush" */
4010 if (!priv->cfg->ops->lib->txfifo_flush)
4011 goto done;
4012
4013 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4014 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
4015 goto done;
4016 }
4017 if (iwl_is_rfkill(priv)) {
4018 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
4019 goto done;
4020 }
4021
4022 /*
4023 * mac80211 will not push any more frames for transmit
4024 * until the flush is completed
4025 */
4026 if (drop) {
4027 IWL_DEBUG_MAC80211(priv, "send flush command\n");
4028 if (priv->cfg->ops->lib->txfifo_flush(priv, IWL_DROP_ALL)) {
4029 IWL_ERR(priv, "flush request fail\n");
4030 goto done;
4031 }
4032 }
4033 IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
4034 iwlagn_wait_tx_queue_empty(priv);
4035 done:
4036 mutex_unlock(&priv->mutex);
4037 IWL_DEBUG_MAC80211(priv, "leave\n");
4038 }
4039
4040 /*****************************************************************************
4041 *
4042 * driver setup and teardown
4043 *
4044 *****************************************************************************/
4045
4046 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4047 {
4048 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
4049
4050 init_waitqueue_head(&priv->wait_command_queue);
4051
4052 INIT_WORK(&priv->restart, iwl_bg_restart);
4053 INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
4054 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
4055 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4056 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
4057 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
4058 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
4059 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4060 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4061
4062 iwl_setup_scan_deferred_work(priv);
4063
4064 if (priv->cfg->ops->lib->setup_deferred_work)
4065 priv->cfg->ops->lib->setup_deferred_work(priv);
4066
4067 init_timer(&priv->statistics_periodic);
4068 priv->statistics_periodic.data = (unsigned long)priv;
4069 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
4070
4071 init_timer(&priv->ucode_trace);
4072 priv->ucode_trace.data = (unsigned long)priv;
4073 priv->ucode_trace.function = iwl_bg_ucode_trace;
4074
4075 if (priv->cfg->ops->lib->recover_from_tx_stall) {
4076 init_timer(&priv->monitor_recover);
4077 priv->monitor_recover.data = (unsigned long)priv;
4078 priv->monitor_recover.function =
4079 priv->cfg->ops->lib->recover_from_tx_stall;
4080 }
4081
4082 if (!priv->cfg->base_params->use_isr_legacy)
4083 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4084 iwl_irq_tasklet, (unsigned long)priv);
4085 else
4086 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4087 iwl_irq_tasklet_legacy, (unsigned long)priv);
4088 }
4089
4090 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4091 {
4092 if (priv->cfg->ops->lib->cancel_deferred_work)
4093 priv->cfg->ops->lib->cancel_deferred_work(priv);
4094
4095 cancel_delayed_work_sync(&priv->init_alive_start);
4096 cancel_delayed_work(&priv->alive_start);
4097 cancel_work_sync(&priv->run_time_calib_work);
4098 cancel_work_sync(&priv->beacon_update);
4099
4100 iwl_cancel_scan_deferred_work(priv);
4101
4102 cancel_work_sync(&priv->bt_full_concurrency);
4103 cancel_work_sync(&priv->bt_runtime_config);
4104
4105 del_timer_sync(&priv->statistics_periodic);
4106 del_timer_sync(&priv->ucode_trace);
4107 }
4108
4109 static void iwl_init_hw_rates(struct iwl_priv *priv,
4110 struct ieee80211_rate *rates)
4111 {
4112 int i;
4113
4114 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
4115 rates[i].bitrate = iwl_rates[i].ieee * 5;
4116 rates[i].hw_value = i; /* Rate scaling will work on indexes */
4117 rates[i].hw_value_short = i;
4118 rates[i].flags = 0;
4119 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
4120 /*
4121 * If CCK != 1M then set short preamble rate flag.
4122 */
4123 rates[i].flags |=
4124 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
4125 0 : IEEE80211_RATE_SHORT_PREAMBLE;
4126 }
4127 }
4128 }
4129
4130 static int iwl_init_drv(struct iwl_priv *priv)
4131 {
4132 int ret;
4133
4134 priv->ibss_beacon = NULL;
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 if (priv->ibss_beacon)
4649 dev_kfree_skb(priv->ibss_beacon);
4650
4651 ieee80211_free_hw(priv->hw);
4652 }
4653
4654
4655 /*****************************************************************************
4656 *
4657 * driver and module entry point
4658 *
4659 *****************************************************************************/
4660
4661 /* Hardware specific file defines the PCI IDs table for that hardware module */
4662 static DEFINE_PCI_DEVICE_TABLE(iwl_hw_card_ids) = {
4663 #ifdef CONFIG_IWL4965
4664 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4665 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4666 #endif /* CONFIG_IWL4965 */
4667 #ifdef CONFIG_IWL5000
4668 /* 5100 Series WiFi */
4669 {IWL_PCI_DEVICE(0x4232, 0x1201, iwl5100_agn_cfg)}, /* Mini Card */
4670 {IWL_PCI_DEVICE(0x4232, 0x1301, iwl5100_agn_cfg)}, /* Half Mini Card */
4671 {IWL_PCI_DEVICE(0x4232, 0x1204, iwl5100_agn_cfg)}, /* Mini Card */
4672 {IWL_PCI_DEVICE(0x4232, 0x1304, iwl5100_agn_cfg)}, /* Half Mini Card */
4673 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bgn_cfg)}, /* Mini Card */
4674 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bgn_cfg)}, /* Half Mini Card */
4675 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)}, /* Mini Card */
4676 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)}, /* Half Mini Card */
4677 {IWL_PCI_DEVICE(0x4232, 0x1221, iwl5100_agn_cfg)}, /* Mini Card */
4678 {IWL_PCI_DEVICE(0x4232, 0x1321, iwl5100_agn_cfg)}, /* Half Mini Card */
4679 {IWL_PCI_DEVICE(0x4232, 0x1224, iwl5100_agn_cfg)}, /* Mini Card */
4680 {IWL_PCI_DEVICE(0x4232, 0x1324, iwl5100_agn_cfg)}, /* Half Mini Card */
4681 {IWL_PCI_DEVICE(0x4232, 0x1225, iwl5100_bgn_cfg)}, /* Mini Card */
4682 {IWL_PCI_DEVICE(0x4232, 0x1325, iwl5100_bgn_cfg)}, /* Half Mini Card */
4683 {IWL_PCI_DEVICE(0x4232, 0x1226, iwl5100_abg_cfg)}, /* Mini Card */
4684 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)}, /* Half Mini Card */
4685 {IWL_PCI_DEVICE(0x4237, 0x1211, iwl5100_agn_cfg)}, /* Mini Card */
4686 {IWL_PCI_DEVICE(0x4237, 0x1311, iwl5100_agn_cfg)}, /* Half Mini Card */
4687 {IWL_PCI_DEVICE(0x4237, 0x1214, iwl5100_agn_cfg)}, /* Mini Card */
4688 {IWL_PCI_DEVICE(0x4237, 0x1314, iwl5100_agn_cfg)}, /* Half Mini Card */
4689 {IWL_PCI_DEVICE(0x4237, 0x1215, iwl5100_bgn_cfg)}, /* Mini Card */
4690 {IWL_PCI_DEVICE(0x4237, 0x1315, iwl5100_bgn_cfg)}, /* Half Mini Card */
4691 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)}, /* Mini Card */
4692 {IWL_PCI_DEVICE(0x4237, 0x1316, iwl5100_abg_cfg)}, /* Half Mini Card */
4693
4694 /* 5300 Series WiFi */
4695 {IWL_PCI_DEVICE(0x4235, 0x1021, iwl5300_agn_cfg)}, /* Mini Card */
4696 {IWL_PCI_DEVICE(0x4235, 0x1121, iwl5300_agn_cfg)}, /* Half Mini Card */
4697 {IWL_PCI_DEVICE(0x4235, 0x1024, iwl5300_agn_cfg)}, /* Mini Card */
4698 {IWL_PCI_DEVICE(0x4235, 0x1124, iwl5300_agn_cfg)}, /* Half Mini Card */
4699 {IWL_PCI_DEVICE(0x4235, 0x1001, iwl5300_agn_cfg)}, /* Mini Card */
4700 {IWL_PCI_DEVICE(0x4235, 0x1101, iwl5300_agn_cfg)}, /* Half Mini Card */
4701 {IWL_PCI_DEVICE(0x4235, 0x1004, iwl5300_agn_cfg)}, /* Mini Card */
4702 {IWL_PCI_DEVICE(0x4235, 0x1104, iwl5300_agn_cfg)}, /* Half Mini Card */
4703 {IWL_PCI_DEVICE(0x4236, 0x1011, iwl5300_agn_cfg)}, /* Mini Card */
4704 {IWL_PCI_DEVICE(0x4236, 0x1111, iwl5300_agn_cfg)}, /* Half Mini Card */
4705 {IWL_PCI_DEVICE(0x4236, 0x1014, iwl5300_agn_cfg)}, /* Mini Card */
4706 {IWL_PCI_DEVICE(0x4236, 0x1114, iwl5300_agn_cfg)}, /* Half Mini Card */
4707
4708 /* 5350 Series WiFi/WiMax */
4709 {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)}, /* Mini Card */
4710 {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)}, /* Mini Card */
4711 {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)}, /* Mini Card */
4712
4713 /* 5150 Series Wifi/WiMax */
4714 {IWL_PCI_DEVICE(0x423C, 0x1201, iwl5150_agn_cfg)}, /* Mini Card */
4715 {IWL_PCI_DEVICE(0x423C, 0x1301, iwl5150_agn_cfg)}, /* Half Mini Card */
4716 {IWL_PCI_DEVICE(0x423C, 0x1206, iwl5150_abg_cfg)}, /* Mini Card */
4717 {IWL_PCI_DEVICE(0x423C, 0x1306, iwl5150_abg_cfg)}, /* Half Mini Card */
4718 {IWL_PCI_DEVICE(0x423C, 0x1221, iwl5150_agn_cfg)}, /* Mini Card */
4719 {IWL_PCI_DEVICE(0x423C, 0x1321, iwl5150_agn_cfg)}, /* Half Mini Card */
4720
4721 {IWL_PCI_DEVICE(0x423D, 0x1211, iwl5150_agn_cfg)}, /* Mini Card */
4722 {IWL_PCI_DEVICE(0x423D, 0x1311, iwl5150_agn_cfg)}, /* Half Mini Card */
4723 {IWL_PCI_DEVICE(0x423D, 0x1216, iwl5150_abg_cfg)}, /* Mini Card */
4724 {IWL_PCI_DEVICE(0x423D, 0x1316, iwl5150_abg_cfg)}, /* Half Mini Card */
4725
4726 /* 6x00 Series */
4727 {IWL_PCI_DEVICE(0x422B, 0x1101, iwl6000_3agn_cfg)},
4728 {IWL_PCI_DEVICE(0x422B, 0x1121, iwl6000_3agn_cfg)},
4729 {IWL_PCI_DEVICE(0x422C, 0x1301, iwl6000i_2agn_cfg)},
4730 {IWL_PCI_DEVICE(0x422C, 0x1306, iwl6000i_2abg_cfg)},
4731 {IWL_PCI_DEVICE(0x422C, 0x1307, iwl6000i_2bg_cfg)},
4732 {IWL_PCI_DEVICE(0x422C, 0x1321, iwl6000i_2agn_cfg)},
4733 {IWL_PCI_DEVICE(0x422C, 0x1326, iwl6000i_2abg_cfg)},
4734 {IWL_PCI_DEVICE(0x4238, 0x1111, iwl6000_3agn_cfg)},
4735 {IWL_PCI_DEVICE(0x4239, 0x1311, iwl6000i_2agn_cfg)},
4736 {IWL_PCI_DEVICE(0x4239, 0x1316, iwl6000i_2abg_cfg)},
4737
4738 /* 6x00 Series Gen2a */
4739 {IWL_PCI_DEVICE(0x0082, 0x1201, iwl6000g2a_2agn_cfg)},
4740 {IWL_PCI_DEVICE(0x0085, 0x1211, iwl6000g2a_2agn_cfg)},
4741 {IWL_PCI_DEVICE(0x0082, 0x1221, iwl6000g2a_2agn_cfg)},
4742 {IWL_PCI_DEVICE(0x0082, 0x1206, iwl6000g2a_2abg_cfg)},
4743 {IWL_PCI_DEVICE(0x0085, 0x1216, iwl6000g2a_2abg_cfg)},
4744 {IWL_PCI_DEVICE(0x0082, 0x1226, iwl6000g2a_2abg_cfg)},
4745 {IWL_PCI_DEVICE(0x0082, 0x1207, iwl6000g2a_2bg_cfg)},
4746 {IWL_PCI_DEVICE(0x0082, 0x1301, iwl6000g2a_2agn_cfg)},
4747 {IWL_PCI_DEVICE(0x0082, 0x1306, iwl6000g2a_2abg_cfg)},
4748 {IWL_PCI_DEVICE(0x0082, 0x1307, iwl6000g2a_2bg_cfg)},
4749 {IWL_PCI_DEVICE(0x0082, 0x1321, iwl6000g2a_2agn_cfg)},
4750 {IWL_PCI_DEVICE(0x0082, 0x1326, iwl6000g2a_2abg_cfg)},
4751 {IWL_PCI_DEVICE(0x0085, 0x1311, iwl6000g2a_2agn_cfg)},
4752 {IWL_PCI_DEVICE(0x0085, 0x1316, iwl6000g2a_2abg_cfg)},
4753
4754 /* 6x00 Series Gen2b */
4755 {IWL_PCI_DEVICE(0x008F, 0x5105, iwl6000g2b_bgn_cfg)},
4756 {IWL_PCI_DEVICE(0x0090, 0x5115, iwl6000g2b_bgn_cfg)},
4757 {IWL_PCI_DEVICE(0x008F, 0x5125, iwl6000g2b_bgn_cfg)},
4758 {IWL_PCI_DEVICE(0x008F, 0x5107, iwl6000g2b_bg_cfg)},
4759 {IWL_PCI_DEVICE(0x008F, 0x5201, iwl6000g2b_2agn_cfg)},
4760 {IWL_PCI_DEVICE(0x0090, 0x5211, iwl6000g2b_2agn_cfg)},
4761 {IWL_PCI_DEVICE(0x008F, 0x5221, iwl6000g2b_2agn_cfg)},
4762 {IWL_PCI_DEVICE(0x008F, 0x5206, iwl6000g2b_2abg_cfg)},
4763 {IWL_PCI_DEVICE(0x0090, 0x5216, iwl6000g2b_2abg_cfg)},
4764 {IWL_PCI_DEVICE(0x008F, 0x5226, iwl6000g2b_2abg_cfg)},
4765 {IWL_PCI_DEVICE(0x008F, 0x5207, iwl6000g2b_2bg_cfg)},
4766 {IWL_PCI_DEVICE(0x008A, 0x5301, iwl6000g2b_bgn_cfg)},
4767 {IWL_PCI_DEVICE(0x008A, 0x5305, iwl6000g2b_bgn_cfg)},
4768 {IWL_PCI_DEVICE(0x008A, 0x5307, iwl6000g2b_bg_cfg)},
4769 {IWL_PCI_DEVICE(0x008A, 0x5321, iwl6000g2b_bgn_cfg)},
4770 {IWL_PCI_DEVICE(0x008A, 0x5325, iwl6000g2b_bgn_cfg)},
4771 {IWL_PCI_DEVICE(0x008B, 0x5311, iwl6000g2b_bgn_cfg)},
4772 {IWL_PCI_DEVICE(0x008B, 0x5315, iwl6000g2b_bgn_cfg)},
4773 {IWL_PCI_DEVICE(0x0090, 0x5211, iwl6000g2b_2agn_cfg)},
4774 {IWL_PCI_DEVICE(0x0090, 0x5215, iwl6000g2b_2bgn_cfg)},
4775 {IWL_PCI_DEVICE(0x0090, 0x5216, iwl6000g2b_2abg_cfg)},
4776 {IWL_PCI_DEVICE(0x0091, 0x5201, iwl6000g2b_2agn_cfg)},
4777 {IWL_PCI_DEVICE(0x0091, 0x5205, iwl6000g2b_2bgn_cfg)},
4778 {IWL_PCI_DEVICE(0x0091, 0x5206, iwl6000g2b_2abg_cfg)},
4779 {IWL_PCI_DEVICE(0x0091, 0x5207, iwl6000g2b_2bg_cfg)},
4780 {IWL_PCI_DEVICE(0x0091, 0x5221, iwl6000g2b_2agn_cfg)},
4781 {IWL_PCI_DEVICE(0x0091, 0x5225, iwl6000g2b_2bgn_cfg)},
4782 {IWL_PCI_DEVICE(0x0091, 0x5226, iwl6000g2b_2abg_cfg)},
4783
4784 /* 6x50 WiFi/WiMax Series */
4785 {IWL_PCI_DEVICE(0x0087, 0x1301, iwl6050_2agn_cfg)},
4786 {IWL_PCI_DEVICE(0x0087, 0x1306, iwl6050_2abg_cfg)},
4787 {IWL_PCI_DEVICE(0x0087, 0x1321, iwl6050_2agn_cfg)},
4788 {IWL_PCI_DEVICE(0x0087, 0x1326, iwl6050_2abg_cfg)},
4789 {IWL_PCI_DEVICE(0x0089, 0x1311, iwl6050_2agn_cfg)},
4790 {IWL_PCI_DEVICE(0x0089, 0x1316, iwl6050_2abg_cfg)},
4791
4792 /* 6x50 WiFi/WiMax Series Gen2 */
4793 {IWL_PCI_DEVICE(0x0885, 0x1305, iwl6050g2_bgn_cfg)},
4794 {IWL_PCI_DEVICE(0x0885, 0x1306, iwl6050g2_bgn_cfg)},
4795 {IWL_PCI_DEVICE(0x0885, 0x1325, iwl6050g2_bgn_cfg)},
4796 {IWL_PCI_DEVICE(0x0885, 0x1326, iwl6050g2_bgn_cfg)},
4797 {IWL_PCI_DEVICE(0x0886, 0x1315, iwl6050g2_bgn_cfg)},
4798 {IWL_PCI_DEVICE(0x0886, 0x1316, iwl6050g2_bgn_cfg)},
4799
4800 /* 1000 Series WiFi */
4801 {IWL_PCI_DEVICE(0x0083, 0x1205, iwl1000_bgn_cfg)},
4802 {IWL_PCI_DEVICE(0x0083, 0x1305, iwl1000_bgn_cfg)},
4803 {IWL_PCI_DEVICE(0x0083, 0x1225, iwl1000_bgn_cfg)},
4804 {IWL_PCI_DEVICE(0x0083, 0x1325, iwl1000_bgn_cfg)},
4805 {IWL_PCI_DEVICE(0x0084, 0x1215, iwl1000_bgn_cfg)},
4806 {IWL_PCI_DEVICE(0x0084, 0x1315, iwl1000_bgn_cfg)},
4807 {IWL_PCI_DEVICE(0x0083, 0x1206, iwl1000_bg_cfg)},
4808 {IWL_PCI_DEVICE(0x0083, 0x1306, iwl1000_bg_cfg)},
4809 {IWL_PCI_DEVICE(0x0083, 0x1226, iwl1000_bg_cfg)},
4810 {IWL_PCI_DEVICE(0x0083, 0x1326, iwl1000_bg_cfg)},
4811 {IWL_PCI_DEVICE(0x0084, 0x1216, iwl1000_bg_cfg)},
4812 {IWL_PCI_DEVICE(0x0084, 0x1316, iwl1000_bg_cfg)},
4813
4814 /* 100 Series WiFi */
4815 {IWL_PCI_DEVICE(0x08AE, 0x1005, iwl100_bgn_cfg)},
4816 {IWL_PCI_DEVICE(0x08AF, 0x1015, iwl100_bgn_cfg)},
4817 {IWL_PCI_DEVICE(0x08AE, 0x1025, iwl100_bgn_cfg)},
4818 {IWL_PCI_DEVICE(0x08AE, 0x1007, iwl100_bg_cfg)},
4819 {IWL_PCI_DEVICE(0x08AE, 0x1017, iwl100_bg_cfg)},
4820
4821 /* 130 Series WiFi */
4822 {IWL_PCI_DEVICE(0x0896, 0x5005, iwl130_bgn_cfg)},
4823 {IWL_PCI_DEVICE(0x0896, 0x5007, iwl130_bg_cfg)},
4824 {IWL_PCI_DEVICE(0x0897, 0x5015, iwl130_bgn_cfg)},
4825 {IWL_PCI_DEVICE(0x0897, 0x5017, iwl130_bg_cfg)},
4826 {IWL_PCI_DEVICE(0x0896, 0x5025, iwl130_bgn_cfg)},
4827 {IWL_PCI_DEVICE(0x0896, 0x5027, iwl130_bg_cfg)},
4828
4829 #endif /* CONFIG_IWL5000 */
4830
4831 {0}
4832 };
4833 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4834
4835 static struct pci_driver iwl_driver = {
4836 .name = DRV_NAME,
4837 .id_table = iwl_hw_card_ids,
4838 .probe = iwl_pci_probe,
4839 .remove = __devexit_p(iwl_pci_remove),
4840 #ifdef CONFIG_PM
4841 .suspend = iwl_pci_suspend,
4842 .resume = iwl_pci_resume,
4843 #endif
4844 };
4845
4846 static int __init iwl_init(void)
4847 {
4848
4849 int ret;
4850 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
4851 pr_info(DRV_COPYRIGHT "\n");
4852
4853 ret = iwlagn_rate_control_register();
4854 if (ret) {
4855 pr_err("Unable to register rate control algorithm: %d\n", ret);
4856 return ret;
4857 }
4858
4859 ret = pci_register_driver(&iwl_driver);
4860 if (ret) {
4861 pr_err("Unable to initialize PCI module\n");
4862 goto error_register;
4863 }
4864
4865 return ret;
4866
4867 error_register:
4868 iwlagn_rate_control_unregister();
4869 return ret;
4870 }
4871
4872 static void __exit iwl_exit(void)
4873 {
4874 pci_unregister_driver(&iwl_driver);
4875 iwlagn_rate_control_unregister();
4876 }
4877
4878 module_exit(iwl_exit);
4879 module_init(iwl_init);
4880
4881 #ifdef CONFIG_IWLWIFI_DEBUG
4882 module_param_named(debug50, iwl_debug_level, uint, S_IRUGO);
4883 MODULE_PARM_DESC(debug50, "50XX debug output mask (deprecated)");
4884 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
4885 MODULE_PARM_DESC(debug, "debug output mask");
4886 #endif
4887
4888 module_param_named(swcrypto50, iwlagn_mod_params.sw_crypto, bool, S_IRUGO);
4889 MODULE_PARM_DESC(swcrypto50,
4890 "using crypto in software (default 0 [hardware]) (deprecated)");
4891 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
4892 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
4893 module_param_named(queues_num50,
4894 iwlagn_mod_params.num_of_queues, int, S_IRUGO);
4895 MODULE_PARM_DESC(queues_num50,
4896 "number of hw queues in 50xx series (deprecated)");
4897 module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
4898 MODULE_PARM_DESC(queues_num, "number of hw queues.");
4899 module_param_named(11n_disable50, iwlagn_mod_params.disable_11n, int, S_IRUGO);
4900 MODULE_PARM_DESC(11n_disable50, "disable 50XX 11n functionality (deprecated)");
4901 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, int, S_IRUGO);
4902 MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
4903 module_param_named(amsdu_size_8K50, iwlagn_mod_params.amsdu_size_8K,
4904 int, S_IRUGO);
4905 MODULE_PARM_DESC(amsdu_size_8K50,
4906 "enable 8K amsdu size in 50XX series (deprecated)");
4907 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
4908 int, S_IRUGO);
4909 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
4910 module_param_named(fw_restart50, iwlagn_mod_params.restart_fw, int, S_IRUGO);
4911 MODULE_PARM_DESC(fw_restart50,
4912 "restart firmware in case of error (deprecated)");
4913 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
4914 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
4915 module_param_named(
4916 disable_hw_scan, iwlagn_mod_params.disable_hw_scan, int, S_IRUGO);
4917 MODULE_PARM_DESC(disable_hw_scan,
4918 "disable hardware scanning (default 0) (deprecated)");
4919
4920 module_param_named(ucode_alternative, iwlagn_wanted_ucode_alternative, int,
4921 S_IRUGO);
4922 MODULE_PARM_DESC(ucode_alternative,
4923 "specify ucode alternative to use from ucode file");
4924
4925 module_param_named(antenna_coupling, iwlagn_ant_coupling, int, S_IRUGO);
4926 MODULE_PARM_DESC(antenna_coupling,
4927 "specify antenna coupling in dB (defualt: 0 dB)");
4928
4929 module_param_named(bt_ch_announce, iwlagn_bt_ch_announce, bool, S_IRUGO);
4930 MODULE_PARM_DESC(bt_ch_announce,
4931 "Enable BT channel announcement mode (default: enable)");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree