iwlwifi: move agn specific station code there
[linux-2.6.git] / drivers / net / wireless / iwlwifi / iwl-agn.c
1 /******************************************************************************
2  *
3  * Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved.
4  *
5  * Portions of this file are derived from the ipw3945 project, as well
6  * as portions of the ieee80211 subsystem header files.
7  *
8  * This program is free software; you can redistribute it and/or modify it
9  * under the terms of version 2 of the GNU General Public License as
10  * published by the Free Software Foundation.
11  *
12  * This program is distributed in the hope that it will be useful, but WITHOUT
13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
15  * more details.
16  *
17  * You should have received a copy of the GNU General Public License along with
18  * this program; if not, write to the Free Software Foundation, Inc.,
19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20  *
21  * The full GNU General Public License is included in this distribution in the
22  * file called LICENSE.
23  *
24  * Contact Information:
25  *  Intel Linux Wireless <ilw@linux.intel.com>
26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27  *
28  *****************************************************************************/
29
30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
31
32 #include <linux/kernel.h>
33 #include <linux/module.h>
34 #include <linux/init.h>
35 #include <linux/pci.h>
36 #include <linux/pci-aspm.h>
37 #include <linux/slab.h>
38 #include <linux/dma-mapping.h>
39 #include <linux/delay.h>
40 #include <linux/sched.h>
41 #include <linux/skbuff.h>
42 #include <linux/netdevice.h>
43 #include <linux/wireless.h>
44 #include <linux/firmware.h>
45 #include <linux/etherdevice.h>
46 #include <linux/if_arp.h>
47
48 #include <net/mac80211.h>
49
50 #include <asm/div64.h>
51
52 #define DRV_NAME        "iwlagn"
53
54 #include "iwl-eeprom.h"
55 #include "iwl-dev.h"
56 #include "iwl-core.h"
57 #include "iwl-io.h"
58 #include "iwl-helpers.h"
59 #include "iwl-sta.h"
60 #include "iwl-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 int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
939 {
940         if (src == IWL_PWR_SRC_VAUX) {
941                 if (pci_pme_capable(priv->pci_dev, PCI_D3cold))
942                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
943                                                APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
944                                                ~APMG_PS_CTRL_MSK_PWR_SRC);
945         } else {
946                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
947                                        APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
948                                        ~APMG_PS_CTRL_MSK_PWR_SRC);
949         }
950
951         return 0;
952 }
953
954 static void iwl_bg_tx_flush(struct work_struct *work)
955 {
956         struct iwl_priv *priv =
957                 container_of(work, struct iwl_priv, tx_flush);
958
959         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
960                 return;
961
962         /* do nothing if rf-kill is on */
963         if (!iwl_is_ready_rf(priv))
964                 return;
965
966         if (priv->cfg->ops->lib->txfifo_flush) {
967                 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
968                 iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
969         }
970 }
971
972 /**
973  * iwl_setup_rx_handlers - Initialize Rx handler callbacks
974  *
975  * Setup the RX handlers for each of the reply types sent from the uCode
976  * to the host.
977  *
978  * This function chains into the hardware specific files for them to setup
979  * any hardware specific handlers as well.
980  */
981 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
982 {
983         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
984         priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
985         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
986         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
987                         iwl_rx_spectrum_measure_notif;
988         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
989         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
990             iwl_rx_pm_debug_statistics_notif;
991         priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
992
993         /*
994          * The same handler is used for both the REPLY to a discrete
995          * statistics request from the host as well as for the periodic
996          * statistics notifications (after received beacons) from the uCode.
997          */
998         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_reply_statistics;
999         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1000
1001         iwl_setup_rx_scan_handlers(priv);
1002
1003         /* status change handler */
1004         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
1005
1006         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1007             iwl_rx_missed_beacon_notif;
1008         /* Rx handlers */
1009         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwlagn_rx_reply_rx_phy;
1010         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwlagn_rx_reply_rx;
1011         /* block ack */
1012         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwlagn_rx_reply_compressed_ba;
1013         /* Set up hardware specific Rx handlers */
1014         priv->cfg->ops->lib->rx_handler_setup(priv);
1015 }
1016
1017 /**
1018  * iwl_rx_handle - Main entry function for receiving responses from uCode
1019  *
1020  * Uses the priv->rx_handlers callback function array to invoke
1021  * the appropriate handlers, including command responses,
1022  * frame-received notifications, and other notifications.
1023  */
1024 void iwl_rx_handle(struct iwl_priv *priv)
1025 {
1026         struct iwl_rx_mem_buffer *rxb;
1027         struct iwl_rx_packet *pkt;
1028         struct iwl_rx_queue *rxq = &priv->rxq;
1029         u32 r, i;
1030         int reclaim;
1031         unsigned long flags;
1032         u8 fill_rx = 0;
1033         u32 count = 8;
1034         int total_empty;
1035
1036         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1037          * buffer that the driver may process (last buffer filled by ucode). */
1038         r = le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF;
1039         i = rxq->read;
1040
1041         /* Rx interrupt, but nothing sent from uCode */
1042         if (i == r)
1043                 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
1044
1045         /* calculate total frames need to be restock after handling RX */
1046         total_empty = r - rxq->write_actual;
1047         if (total_empty < 0)
1048                 total_empty += RX_QUEUE_SIZE;
1049
1050         if (total_empty > (RX_QUEUE_SIZE / 2))
1051                 fill_rx = 1;
1052
1053         while (i != r) {
1054                 int len;
1055
1056                 rxb = rxq->queue[i];
1057
1058                 /* If an RXB doesn't have a Rx queue slot associated with it,
1059                  * then a bug has been introduced in the queue refilling
1060                  * routines -- catch it here */
1061                 BUG_ON(rxb == NULL);
1062
1063                 rxq->queue[i] = NULL;
1064
1065                 pci_unmap_page(priv->pci_dev, rxb->page_dma,
1066                                PAGE_SIZE << priv->hw_params.rx_page_order,
1067                                PCI_DMA_FROMDEVICE);
1068                 pkt = rxb_addr(rxb);
1069
1070                 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
1071                 len += sizeof(u32); /* account for status word */
1072                 trace_iwlwifi_dev_rx(priv, pkt, len);
1073
1074                 /* Reclaim a command buffer only if this packet is a response
1075                  *   to a (driver-originated) command.
1076                  * If the packet (e.g. Rx frame) originated from uCode,
1077                  *   there is no command buffer to reclaim.
1078                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1079                  *   but apparently a few don't get set; catch them here. */
1080                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1081                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1082                         (pkt->hdr.cmd != REPLY_RX) &&
1083                         (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
1084                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1085                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1086                         (pkt->hdr.cmd != REPLY_TX);
1087
1088                 /* Based on type of command response or notification,
1089                  *   handle those that need handling via function in
1090                  *   rx_handlers table.  See iwl_setup_rx_handlers() */
1091                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1092                         IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r,
1093                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1094                         priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
1095                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1096                 } else {
1097                         /* No handling needed */
1098                         IWL_DEBUG_RX(priv,
1099                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1100                                 r, i, get_cmd_string(pkt->hdr.cmd),
1101                                 pkt->hdr.cmd);
1102                 }
1103
1104                 /*
1105                  * XXX: After here, we should always check rxb->page
1106                  * against NULL before touching it or its virtual
1107                  * memory (pkt). Because some rx_handler might have
1108                  * already taken or freed the pages.
1109                  */
1110
1111                 if (reclaim) {
1112                         /* Invoke any callbacks, transfer the buffer to caller,
1113                          * and fire off the (possibly) blocking iwl_send_cmd()
1114                          * as we reclaim the driver command queue */
1115                         if (rxb->page)
1116                                 iwl_tx_cmd_complete(priv, rxb);
1117                         else
1118                                 IWL_WARN(priv, "Claim null rxb?\n");
1119                 }
1120
1121                 /* Reuse the page if possible. For notification packets and
1122                  * SKBs that fail to Rx correctly, add them back into the
1123                  * rx_free list for reuse later. */
1124                 spin_lock_irqsave(&rxq->lock, flags);
1125                 if (rxb->page != NULL) {
1126                         rxb->page_dma = pci_map_page(priv->pci_dev, rxb->page,
1127                                 0, PAGE_SIZE << priv->hw_params.rx_page_order,
1128                                 PCI_DMA_FROMDEVICE);
1129                         list_add_tail(&rxb->list, &rxq->rx_free);
1130                         rxq->free_count++;
1131                 } else
1132                         list_add_tail(&rxb->list, &rxq->rx_used);
1133
1134                 spin_unlock_irqrestore(&rxq->lock, flags);
1135
1136                 i = (i + 1) & RX_QUEUE_MASK;
1137                 /* If there are a lot of unused frames,
1138                  * restock the Rx queue so ucode wont assert. */
1139                 if (fill_rx) {
1140                         count++;
1141                         if (count >= 8) {
1142                                 rxq->read = i;
1143                                 iwlagn_rx_replenish_now(priv);
1144                                 count = 0;
1145                         }
1146                 }
1147         }
1148
1149         /* Backtrack one entry */
1150         rxq->read = i;
1151         if (fill_rx)
1152                 iwlagn_rx_replenish_now(priv);
1153         else
1154                 iwlagn_rx_queue_restock(priv);
1155 }
1156
1157 /* call this function to flush any scheduled tasklet */
1158 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1159 {
1160         /* wait to make sure we flush pending tasklet*/
1161         synchronize_irq(priv->pci_dev->irq);
1162         tasklet_kill(&priv->irq_tasklet);
1163 }
1164
1165 static void iwl_irq_tasklet_legacy(struct iwl_priv *priv)
1166 {
1167         u32 inta, handled = 0;
1168         u32 inta_fh;
1169         unsigned long flags;
1170         u32 i;
1171 #ifdef CONFIG_IWLWIFI_DEBUG
1172         u32 inta_mask;
1173 #endif
1174
1175         spin_lock_irqsave(&priv->lock, flags);
1176
1177         /* Ack/clear/reset pending uCode interrupts.
1178          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1179          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1180         inta = iwl_read32(priv, CSR_INT);
1181         iwl_write32(priv, CSR_INT, inta);
1182
1183         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1184          * Any new interrupts that happen after this, either while we're
1185          * in this tasklet, or later, will show up in next ISR/tasklet. */
1186         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1187         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1188
1189 #ifdef CONFIG_IWLWIFI_DEBUG
1190         if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1191                 /* just for debug */
1192                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1193                 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1194                               inta, inta_mask, inta_fh);
1195         }
1196 #endif
1197
1198         spin_unlock_irqrestore(&priv->lock, flags);
1199
1200         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1201          * atomic, make sure that inta covers all the interrupts that
1202          * we've discovered, even if FH interrupt came in just after
1203          * reading CSR_INT. */
1204         if (inta_fh & CSR49_FH_INT_RX_MASK)
1205                 inta |= CSR_INT_BIT_FH_RX;
1206         if (inta_fh & CSR49_FH_INT_TX_MASK)
1207                 inta |= CSR_INT_BIT_FH_TX;
1208
1209         /* Now service all interrupt bits discovered above. */
1210         if (inta & CSR_INT_BIT_HW_ERR) {
1211                 IWL_ERR(priv, "Hardware error detected.  Restarting.\n");
1212
1213                 /* Tell the device to stop sending interrupts */
1214                 iwl_disable_interrupts(priv);
1215
1216                 priv->isr_stats.hw++;
1217                 iwl_irq_handle_error(priv);
1218
1219                 handled |= CSR_INT_BIT_HW_ERR;
1220
1221                 return;
1222         }
1223
1224 #ifdef CONFIG_IWLWIFI_DEBUG
1225         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1226                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1227                 if (inta & CSR_INT_BIT_SCD) {
1228                         IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1229                                       "the frame/frames.\n");
1230                         priv->isr_stats.sch++;
1231                 }
1232
1233                 /* Alive notification via Rx interrupt will do the real work */
1234                 if (inta & CSR_INT_BIT_ALIVE) {
1235                         IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1236                         priv->isr_stats.alive++;
1237                 }
1238         }
1239 #endif
1240         /* Safely ignore these bits for debug checks below */
1241         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1242
1243         /* HW RF KILL switch toggled */
1244         if (inta & CSR_INT_BIT_RF_KILL) {
1245                 int hw_rf_kill = 0;
1246                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1247                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1248                         hw_rf_kill = 1;
1249
1250                 IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
1251                                 hw_rf_kill ? "disable radio" : "enable radio");
1252
1253                 priv->isr_stats.rfkill++;
1254
1255                 /* driver only loads ucode once setting the interface up.
1256                  * the driver allows loading the ucode even if the radio
1257                  * is killed. Hence update the killswitch state here. The
1258                  * rfkill handler will care about restarting if needed.
1259                  */
1260                 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1261                         if (hw_rf_kill)
1262                                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1263                         else
1264                                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1265                         wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
1266                 }
1267
1268                 handled |= CSR_INT_BIT_RF_KILL;
1269         }
1270
1271         /* Chip got too hot and stopped itself */
1272         if (inta & CSR_INT_BIT_CT_KILL) {
1273                 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1274                 priv->isr_stats.ctkill++;
1275                 handled |= CSR_INT_BIT_CT_KILL;
1276         }
1277
1278         /* Error detected by uCode */
1279         if (inta & CSR_INT_BIT_SW_ERR) {
1280                 IWL_ERR(priv, "Microcode SW error detected. "
1281                         " Restarting 0x%X.\n", inta);
1282                 priv->isr_stats.sw++;
1283                 iwl_irq_handle_error(priv);
1284                 handled |= CSR_INT_BIT_SW_ERR;
1285         }
1286
1287         /*
1288          * uCode wakes up after power-down sleep.
1289          * Tell device about any new tx or host commands enqueued,
1290          * and about any Rx buffers made available while asleep.
1291          */
1292         if (inta & CSR_INT_BIT_WAKEUP) {
1293                 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1294                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1295                 for (i = 0; i < priv->hw_params.max_txq_num; i++)
1296                         iwl_txq_update_write_ptr(priv, &priv->txq[i]);
1297                 priv->isr_stats.wakeup++;
1298                 handled |= CSR_INT_BIT_WAKEUP;
1299         }
1300
1301         /* All uCode command responses, including Tx command responses,
1302          * Rx "responses" (frame-received notification), and other
1303          * notifications from uCode come through here*/
1304         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1305                 iwl_rx_handle(priv);
1306                 priv->isr_stats.rx++;
1307                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1308         }
1309
1310         /* This "Tx" DMA channel is used only for loading uCode */
1311         if (inta & CSR_INT_BIT_FH_TX) {
1312                 IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
1313                 priv->isr_stats.tx++;
1314                 handled |= CSR_INT_BIT_FH_TX;
1315                 /* Wake up uCode load routine, now that load is complete */
1316                 priv->ucode_write_complete = 1;
1317                 wake_up_interruptible(&priv->wait_command_queue);
1318         }
1319
1320         if (inta & ~handled) {
1321                 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1322                 priv->isr_stats.unhandled++;
1323         }
1324
1325         if (inta & ~(priv->inta_mask)) {
1326                 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1327                          inta & ~priv->inta_mask);
1328                 IWL_WARN(priv, "   with FH_INT = 0x%08x\n", inta_fh);
1329         }
1330
1331         /* Re-enable all interrupts */
1332         /* only Re-enable if diabled by irq */
1333         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1334                 iwl_enable_interrupts(priv);
1335
1336 #ifdef CONFIG_IWLWIFI_DEBUG
1337         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1338                 inta = iwl_read32(priv, CSR_INT);
1339                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1340                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1341                 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1342                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1343         }
1344 #endif
1345 }
1346
1347 /* tasklet for iwlagn interrupt */
1348 static void iwl_irq_tasklet(struct iwl_priv *priv)
1349 {
1350         u32 inta = 0;
1351         u32 handled = 0;
1352         unsigned long flags;
1353         u32 i;
1354 #ifdef CONFIG_IWLWIFI_DEBUG
1355         u32 inta_mask;
1356 #endif
1357
1358         spin_lock_irqsave(&priv->lock, flags);
1359
1360         /* Ack/clear/reset pending uCode interrupts.
1361          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1362          */
1363         /* There is a hardware bug in the interrupt mask function that some
1364          * interrupts (i.e. CSR_INT_BIT_SCD) can still be generated even if
1365          * they are disabled in the CSR_INT_MASK register. Furthermore the
1366          * ICT interrupt handling mechanism has another bug that might cause
1367          * these unmasked interrupts fail to be detected. We workaround the
1368          * hardware bugs here by ACKing all the possible interrupts so that
1369          * interrupt coalescing can still be achieved.
1370          */
1371         iwl_write32(priv, CSR_INT, priv->_agn.inta | ~priv->inta_mask);
1372
1373         inta = priv->_agn.inta;
1374
1375 #ifdef CONFIG_IWLWIFI_DEBUG
1376         if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1377                 /* just for debug */
1378                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1379                 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x\n ",
1380                                 inta, inta_mask);
1381         }
1382 #endif
1383
1384         spin_unlock_irqrestore(&priv->lock, flags);
1385
1386         /* saved interrupt in inta variable now we can reset priv->_agn.inta */
1387         priv->_agn.inta = 0;
1388
1389         /* Now service all interrupt bits discovered above. */
1390         if (inta & CSR_INT_BIT_HW_ERR) {
1391                 IWL_ERR(priv, "Hardware error detected.  Restarting.\n");
1392
1393                 /* Tell the device to stop sending interrupts */
1394                 iwl_disable_interrupts(priv);
1395
1396                 priv->isr_stats.hw++;
1397                 iwl_irq_handle_error(priv);
1398
1399                 handled |= CSR_INT_BIT_HW_ERR;
1400
1401                 return;
1402         }
1403
1404 #ifdef CONFIG_IWLWIFI_DEBUG
1405         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1406                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1407                 if (inta & CSR_INT_BIT_SCD) {
1408                         IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1409                                       "the frame/frames.\n");
1410                         priv->isr_stats.sch++;
1411                 }
1412
1413                 /* Alive notification via Rx interrupt will do the real work */
1414                 if (inta & CSR_INT_BIT_ALIVE) {
1415                         IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1416                         priv->isr_stats.alive++;
1417                 }
1418         }
1419 #endif
1420         /* Safely ignore these bits for debug checks below */
1421         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1422
1423         /* HW RF KILL switch toggled */
1424         if (inta & CSR_INT_BIT_RF_KILL) {
1425                 int hw_rf_kill = 0;
1426                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1427                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1428                         hw_rf_kill = 1;
1429
1430                 IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
1431                                 hw_rf_kill ? "disable radio" : "enable radio");
1432
1433                 priv->isr_stats.rfkill++;
1434
1435                 /* driver only loads ucode once setting the interface up.
1436                  * the driver allows loading the ucode even if the radio
1437                  * is killed. Hence update the killswitch state here. The
1438                  * rfkill handler will care about restarting if needed.
1439                  */
1440                 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1441                         if (hw_rf_kill)
1442                                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1443                         else
1444                                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1445                         wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
1446                 }
1447
1448                 handled |= CSR_INT_BIT_RF_KILL;
1449         }
1450
1451         /* Chip got too hot and stopped itself */
1452         if (inta & CSR_INT_BIT_CT_KILL) {
1453                 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1454                 priv->isr_stats.ctkill++;
1455                 handled |= CSR_INT_BIT_CT_KILL;
1456         }
1457
1458         /* Error detected by uCode */
1459         if (inta & CSR_INT_BIT_SW_ERR) {
1460                 IWL_ERR(priv, "Microcode SW error detected. "
1461                         " Restarting 0x%X.\n", inta);
1462                 priv->isr_stats.sw++;
1463                 iwl_irq_handle_error(priv);
1464                 handled |= CSR_INT_BIT_SW_ERR;
1465         }
1466
1467         /* uCode wakes up after power-down sleep */
1468         if (inta & CSR_INT_BIT_WAKEUP) {
1469                 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1470                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1471                 for (i = 0; i < priv->hw_params.max_txq_num; i++)
1472                         iwl_txq_update_write_ptr(priv, &priv->txq[i]);
1473
1474                 priv->isr_stats.wakeup++;
1475
1476                 handled |= CSR_INT_BIT_WAKEUP;
1477         }
1478
1479         /* All uCode command responses, including Tx command responses,
1480          * Rx "responses" (frame-received notification), and other
1481          * notifications from uCode come through here*/
1482         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX |
1483                         CSR_INT_BIT_RX_PERIODIC)) {
1484                 IWL_DEBUG_ISR(priv, "Rx interrupt\n");
1485                 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1486                         handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1487                         iwl_write32(priv, CSR_FH_INT_STATUS,
1488                                         CSR49_FH_INT_RX_MASK);
1489                 }
1490                 if (inta & CSR_INT_BIT_RX_PERIODIC) {
1491                         handled |= CSR_INT_BIT_RX_PERIODIC;
1492                         iwl_write32(priv, CSR_INT, CSR_INT_BIT_RX_PERIODIC);
1493                 }
1494                 /* Sending RX interrupt require many steps to be done in the
1495                  * the device:
1496                  * 1- write interrupt to current index in ICT table.
1497                  * 2- dma RX frame.
1498                  * 3- update RX shared data to indicate last write index.
1499                  * 4- send interrupt.
1500                  * This could lead to RX race, driver could receive RX interrupt
1501                  * but the shared data changes does not reflect this;
1502                  * periodic interrupt will detect any dangling Rx activity.
1503                  */
1504
1505                 /* Disable periodic interrupt; we use it as just a one-shot. */
1506                 iwl_write8(priv, CSR_INT_PERIODIC_REG,
1507                             CSR_INT_PERIODIC_DIS);
1508                 iwl_rx_handle(priv);
1509
1510                 /*
1511                  * Enable periodic interrupt in 8 msec only if we received
1512                  * real RX interrupt (instead of just periodic int), to catch
1513                  * any dangling Rx interrupt.  If it was just the periodic
1514                  * interrupt, there was no dangling Rx activity, and no need
1515                  * to extend the periodic interrupt; one-shot is enough.
1516                  */
1517                 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX))
1518                         iwl_write8(priv, CSR_INT_PERIODIC_REG,
1519                                     CSR_INT_PERIODIC_ENA);
1520
1521                 priv->isr_stats.rx++;
1522         }
1523
1524         /* This "Tx" DMA channel is used only for loading uCode */
1525         if (inta & CSR_INT_BIT_FH_TX) {
1526                 iwl_write32(priv, CSR_FH_INT_STATUS, CSR49_FH_INT_TX_MASK);
1527                 IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
1528                 priv->isr_stats.tx++;
1529                 handled |= CSR_INT_BIT_FH_TX;
1530                 /* Wake up uCode load routine, now that load is complete */
1531                 priv->ucode_write_complete = 1;
1532                 wake_up_interruptible(&priv->wait_command_queue);
1533         }
1534
1535         if (inta & ~handled) {
1536                 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1537                 priv->isr_stats.unhandled++;
1538         }
1539
1540         if (inta & ~(priv->inta_mask)) {
1541                 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1542                          inta & ~priv->inta_mask);
1543         }
1544
1545         /* Re-enable all interrupts */
1546         /* only Re-enable if diabled by irq */
1547         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1548                 iwl_enable_interrupts(priv);
1549 }
1550
1551 /* the threshold ratio of actual_ack_cnt to expected_ack_cnt in percent */
1552 #define ACK_CNT_RATIO (50)
1553 #define BA_TIMEOUT_CNT (5)
1554 #define BA_TIMEOUT_MAX (16)
1555
1556 /**
1557  * iwl_good_ack_health - checks for ACK count ratios, BA timeout retries.
1558  *
1559  * When the ACK count ratio is 0 and aggregated BA timeout retries exceeding
1560  * the BA_TIMEOUT_MAX, reload firmware and bring system back to normal
1561  * operation state.
1562  */
1563 bool iwl_good_ack_health(struct iwl_priv *priv,
1564                                 struct iwl_rx_packet *pkt)
1565 {
1566         bool rc = true;
1567         int actual_ack_cnt_delta, expected_ack_cnt_delta;
1568         int ba_timeout_delta;
1569
1570         actual_ack_cnt_delta =
1571                 le32_to_cpu(pkt->u.stats.tx.actual_ack_cnt) -
1572                 le32_to_cpu(priv->_agn.statistics.tx.actual_ack_cnt);
1573         expected_ack_cnt_delta =
1574                 le32_to_cpu(pkt->u.stats.tx.expected_ack_cnt) -
1575                 le32_to_cpu(priv->_agn.statistics.tx.expected_ack_cnt);
1576         ba_timeout_delta =
1577                 le32_to_cpu(pkt->u.stats.tx.agg.ba_timeout) -
1578                 le32_to_cpu(priv->_agn.statistics.tx.agg.ba_timeout);
1579         if ((priv->_agn.agg_tids_count > 0) &&
1580             (expected_ack_cnt_delta > 0) &&
1581             (((actual_ack_cnt_delta * 100) / expected_ack_cnt_delta)
1582                 < ACK_CNT_RATIO) &&
1583             (ba_timeout_delta > BA_TIMEOUT_CNT)) {
1584                 IWL_DEBUG_RADIO(priv, "actual_ack_cnt delta = %d,"
1585                                 " expected_ack_cnt = %d\n",
1586                                 actual_ack_cnt_delta, expected_ack_cnt_delta);
1587
1588 #ifdef CONFIG_IWLWIFI_DEBUGFS
1589                 /*
1590                  * This is ifdef'ed on DEBUGFS because otherwise the
1591                  * statistics aren't available. If DEBUGFS is set but
1592                  * DEBUG is not, these will just compile out.
1593                  */
1594                 IWL_DEBUG_RADIO(priv, "rx_detected_cnt delta = %d\n",
1595                                 priv->_agn.delta_statistics.tx.rx_detected_cnt);
1596                 IWL_DEBUG_RADIO(priv,
1597                                 "ack_or_ba_timeout_collision delta = %d\n",
1598                                 priv->_agn.delta_statistics.tx.
1599                                 ack_or_ba_timeout_collision);
1600 #endif
1601                 IWL_DEBUG_RADIO(priv, "agg ba_timeout delta = %d\n",
1602                                 ba_timeout_delta);
1603                 if (!actual_ack_cnt_delta &&
1604                     (ba_timeout_delta >= BA_TIMEOUT_MAX))
1605                         rc = false;
1606         }
1607         return rc;
1608 }
1609
1610
1611 /*****************************************************************************
1612  *
1613  * sysfs attributes
1614  *
1615  *****************************************************************************/
1616
1617 #ifdef CONFIG_IWLWIFI_DEBUG
1618
1619 /*
1620  * The following adds a new attribute to the sysfs representation
1621  * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
1622  * used for controlling the debug level.
1623  *
1624  * See the level definitions in iwl for details.
1625  *
1626  * The debug_level being managed using sysfs below is a per device debug
1627  * level that is used instead of the global debug level if it (the per
1628  * device debug level) is set.
1629  */
1630 static ssize_t show_debug_level(struct device *d,
1631                                 struct device_attribute *attr, char *buf)
1632 {
1633         struct iwl_priv *priv = dev_get_drvdata(d);
1634         return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
1635 }
1636 static ssize_t store_debug_level(struct device *d,
1637                                 struct device_attribute *attr,
1638                                  const char *buf, size_t count)
1639 {
1640         struct iwl_priv *priv = dev_get_drvdata(d);
1641         unsigned long val;
1642         int ret;
1643
1644         ret = strict_strtoul(buf, 0, &val);
1645         if (ret)
1646                 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
1647         else {
1648                 priv->debug_level = val;
1649                 if (iwl_alloc_traffic_mem(priv))
1650                         IWL_ERR(priv,
1651                                 "Not enough memory to generate traffic log\n");
1652         }
1653         return strnlen(buf, count);
1654 }
1655
1656 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
1657                         show_debug_level, store_debug_level);
1658
1659
1660 #endif /* CONFIG_IWLWIFI_DEBUG */
1661
1662
1663 static ssize_t show_temperature(struct device *d,
1664                                 struct device_attribute *attr, char *buf)
1665 {
1666         struct iwl_priv *priv = dev_get_drvdata(d);
1667
1668         if (!iwl_is_alive(priv))
1669                 return -EAGAIN;
1670
1671         return sprintf(buf, "%d\n", priv->temperature);
1672 }
1673
1674 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
1675
1676 static ssize_t show_tx_power(struct device *d,
1677                              struct device_attribute *attr, char *buf)
1678 {
1679         struct iwl_priv *priv = dev_get_drvdata(d);
1680
1681         if (!iwl_is_ready_rf(priv))
1682                 return sprintf(buf, "off\n");
1683         else
1684                 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
1685 }
1686
1687 static ssize_t store_tx_power(struct device *d,
1688                               struct device_attribute *attr,
1689                               const char *buf, size_t count)
1690 {
1691         struct iwl_priv *priv = dev_get_drvdata(d);
1692         unsigned long val;
1693         int ret;
1694
1695         ret = strict_strtoul(buf, 10, &val);
1696         if (ret)
1697                 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
1698         else {
1699                 ret = iwl_set_tx_power(priv, val, false);
1700                 if (ret)
1701                         IWL_ERR(priv, "failed setting tx power (0x%d).\n",
1702                                 ret);
1703                 else
1704                         ret = count;
1705         }
1706         return ret;
1707 }
1708
1709 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
1710
1711 static struct attribute *iwl_sysfs_entries[] = {
1712         &dev_attr_temperature.attr,
1713         &dev_attr_tx_power.attr,
1714 #ifdef CONFIG_IWLWIFI_DEBUG
1715         &dev_attr_debug_level.attr,
1716 #endif
1717         NULL
1718 };
1719
1720 static struct attribute_group iwl_attribute_group = {
1721         .name = NULL,           /* put in device directory */
1722         .attrs = iwl_sysfs_entries,
1723 };
1724
1725 /******************************************************************************
1726  *
1727  * uCode download functions
1728  *
1729  ******************************************************************************/
1730
1731 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1732 {
1733         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1734         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1735         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1736         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1737         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1738         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1739 }
1740
1741 static void iwl_nic_start(struct iwl_priv *priv)
1742 {
1743         /* Remove all resets to allow NIC to operate */
1744         iwl_write32(priv, CSR_RESET, 0);
1745 }
1746
1747 struct iwlagn_ucode_capabilities {
1748         u32 max_probe_length;
1749         u32 standard_phy_calibration_size;
1750         bool pan;
1751 };
1752
1753 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
1754 static int iwl_mac_setup_register(struct iwl_priv *priv,
1755                                   struct iwlagn_ucode_capabilities *capa);
1756
1757 #define UCODE_EXPERIMENTAL_INDEX        100
1758 #define UCODE_EXPERIMENTAL_TAG          "exp"
1759
1760 static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
1761 {
1762         const char *name_pre = priv->cfg->fw_name_pre;
1763         char tag[8];
1764
1765         if (first) {
1766 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
1767                 priv->fw_index = UCODE_EXPERIMENTAL_INDEX;
1768                 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
1769         } else if (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
1770 #endif
1771                 priv->fw_index = priv->cfg->ucode_api_max;
1772                 sprintf(tag, "%d", priv->fw_index);
1773         } else {
1774                 priv->fw_index--;
1775                 sprintf(tag, "%d", priv->fw_index);
1776         }
1777
1778         if (priv->fw_index < priv->cfg->ucode_api_min) {
1779                 IWL_ERR(priv, "no suitable firmware found!\n");
1780                 return -ENOENT;
1781         }
1782
1783         sprintf(priv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
1784
1785         IWL_DEBUG_INFO(priv, "attempting to load firmware %s'%s'\n",
1786                        (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
1787                                 ? "EXPERIMENTAL " : "",
1788                        priv->firmware_name);
1789
1790         return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
1791                                        &priv->pci_dev->dev, GFP_KERNEL, priv,
1792                                        iwl_ucode_callback);
1793 }
1794
1795 struct iwlagn_firmware_pieces {
1796         const void *inst, *data, *init, *init_data, *boot;
1797         size_t inst_size, data_size, init_size, init_data_size, boot_size;
1798
1799         u32 build;
1800
1801         u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
1802         u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
1803 };
1804
1805 static int iwlagn_load_legacy_firmware(struct iwl_priv *priv,
1806                                        const struct firmware *ucode_raw,
1807                                        struct iwlagn_firmware_pieces *pieces)
1808 {
1809         struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
1810         u32 api_ver, hdr_size;
1811         const u8 *src;
1812
1813         priv->ucode_ver = le32_to_cpu(ucode->ver);
1814         api_ver = IWL_UCODE_API(priv->ucode_ver);
1815
1816         switch (api_ver) {
1817         default:
1818                 /*
1819                  * 4965 doesn't revision the firmware file format
1820                  * along with the API version, it always uses v1
1821                  * file format.
1822                  */
1823                 if ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) !=
1824                                 CSR_HW_REV_TYPE_4965) {
1825                         hdr_size = 28;
1826                         if (ucode_raw->size < hdr_size) {
1827                                 IWL_ERR(priv, "File size too small!\n");
1828                                 return -EINVAL;
1829                         }
1830                         pieces->build = le32_to_cpu(ucode->u.v2.build);
1831                         pieces->inst_size = le32_to_cpu(ucode->u.v2.inst_size);
1832                         pieces->data_size = le32_to_cpu(ucode->u.v2.data_size);
1833                         pieces->init_size = le32_to_cpu(ucode->u.v2.init_size);
1834                         pieces->init_data_size = le32_to_cpu(ucode->u.v2.init_data_size);
1835                         pieces->boot_size = le32_to_cpu(ucode->u.v2.boot_size);
1836                         src = ucode->u.v2.data;
1837                         break;
1838                 }
1839                 /* fall through for 4965 */
1840         case 0:
1841         case 1:
1842         case 2:
1843                 hdr_size = 24;
1844                 if (ucode_raw->size < hdr_size) {
1845                         IWL_ERR(priv, "File size too small!\n");
1846                         return -EINVAL;
1847                 }
1848                 pieces->build = 0;
1849                 pieces->inst_size = le32_to_cpu(ucode->u.v1.inst_size);
1850                 pieces->data_size = le32_to_cpu(ucode->u.v1.data_size);
1851                 pieces->init_size = le32_to_cpu(ucode->u.v1.init_size);
1852                 pieces->init_data_size = le32_to_cpu(ucode->u.v1.init_data_size);
1853                 pieces->boot_size = le32_to_cpu(ucode->u.v1.boot_size);
1854                 src = ucode->u.v1.data;
1855                 break;
1856         }
1857
1858         /* Verify size of file vs. image size info in file's header */
1859         if (ucode_raw->size != hdr_size + pieces->inst_size +
1860                                 pieces->data_size + pieces->init_size +
1861                                 pieces->init_data_size + pieces->boot_size) {
1862
1863                 IWL_ERR(priv,
1864                         "uCode file size %d does not match expected size\n",
1865                         (int)ucode_raw->size);
1866                 return -EINVAL;
1867         }
1868
1869         pieces->inst = src;
1870         src += pieces->inst_size;
1871         pieces->data = src;
1872         src += pieces->data_size;
1873         pieces->init = src;
1874         src += pieces->init_size;
1875         pieces->init_data = src;
1876         src += pieces->init_data_size;
1877         pieces->boot = src;
1878         src += pieces->boot_size;
1879
1880         return 0;
1881 }
1882
1883 static int iwlagn_wanted_ucode_alternative = 1;
1884
1885 static int iwlagn_load_firmware(struct iwl_priv *priv,
1886                                 const struct firmware *ucode_raw,
1887                                 struct iwlagn_firmware_pieces *pieces,
1888                                 struct iwlagn_ucode_capabilities *capa)
1889 {
1890         struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
1891         struct iwl_ucode_tlv *tlv;
1892         size_t len = ucode_raw->size;
1893         const u8 *data;
1894         int wanted_alternative = iwlagn_wanted_ucode_alternative, tmp;
1895         u64 alternatives;
1896         u32 tlv_len;
1897         enum iwl_ucode_tlv_type tlv_type;
1898         const u8 *tlv_data;
1899
1900         if (len < sizeof(*ucode)) {
1901                 IWL_ERR(priv, "uCode has invalid length: %zd\n", len);
1902                 return -EINVAL;
1903         }
1904
1905         if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
1906                 IWL_ERR(priv, "invalid uCode magic: 0X%x\n",
1907                         le32_to_cpu(ucode->magic));
1908                 return -EINVAL;
1909         }
1910
1911         /*
1912          * Check which alternatives are present, and "downgrade"
1913          * when the chosen alternative is not present, warning
1914          * the user when that happens. Some files may not have
1915          * any alternatives, so don't warn in that case.
1916          */
1917         alternatives = le64_to_cpu(ucode->alternatives);
1918         tmp = wanted_alternative;
1919         if (wanted_alternative > 63)
1920                 wanted_alternative = 63;
1921         while (wanted_alternative && !(alternatives & BIT(wanted_alternative)))
1922                 wanted_alternative--;
1923         if (wanted_alternative && wanted_alternative != tmp)
1924                 IWL_WARN(priv,
1925                          "uCode alternative %d not available, choosing %d\n",
1926                          tmp, wanted_alternative);
1927
1928         priv->ucode_ver = le32_to_cpu(ucode->ver);
1929         pieces->build = le32_to_cpu(ucode->build);
1930         data = ucode->data;
1931
1932         len -= sizeof(*ucode);
1933
1934         while (len >= sizeof(*tlv)) {
1935                 u16 tlv_alt;
1936
1937                 len -= sizeof(*tlv);
1938                 tlv = (void *)data;
1939
1940                 tlv_len = le32_to_cpu(tlv->length);
1941                 tlv_type = le16_to_cpu(tlv->type);
1942                 tlv_alt = le16_to_cpu(tlv->alternative);
1943                 tlv_data = tlv->data;
1944
1945                 if (len < tlv_len) {
1946                         IWL_ERR(priv, "invalid TLV len: %zd/%u\n",
1947                                 len, tlv_len);
1948                         return -EINVAL;
1949                 }
1950                 len -= ALIGN(tlv_len, 4);
1951                 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
1952
1953                 /*
1954                  * Alternative 0 is always valid.
1955                  *
1956                  * Skip alternative TLVs that are not selected.
1957                  */
1958                 if (tlv_alt != 0 && tlv_alt != wanted_alternative)
1959                         continue;
1960
1961                 switch (tlv_type) {
1962                 case IWL_UCODE_TLV_INST:
1963                         pieces->inst = tlv_data;
1964                         pieces->inst_size = tlv_len;
1965                         break;
1966                 case IWL_UCODE_TLV_DATA:
1967                         pieces->data = tlv_data;
1968                         pieces->data_size = tlv_len;
1969                         break;
1970                 case IWL_UCODE_TLV_INIT:
1971                         pieces->init = tlv_data;
1972                         pieces->init_size = tlv_len;
1973                         break;
1974                 case IWL_UCODE_TLV_INIT_DATA:
1975                         pieces->init_data = tlv_data;
1976                         pieces->init_data_size = tlv_len;
1977                         break;
1978                 case IWL_UCODE_TLV_BOOT:
1979                         pieces->boot = tlv_data;
1980                         pieces->boot_size = tlv_len;
1981                         break;
1982                 case IWL_UCODE_TLV_PROBE_MAX_LEN:
1983                         if (tlv_len != sizeof(u32))
1984                                 goto invalid_tlv_len;
1985                         capa->max_probe_length =
1986                                         le32_to_cpup((__le32 *)tlv_data);
1987                         break;
1988                 case IWL_UCODE_TLV_PAN:
1989                         if (tlv_len)
1990                                 goto invalid_tlv_len;
1991                         capa->pan = true;
1992                         break;
1993                 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
1994                         if (tlv_len != sizeof(u32))
1995                                 goto invalid_tlv_len;
1996                         pieces->init_evtlog_ptr =
1997                                         le32_to_cpup((__le32 *)tlv_data);
1998                         break;
1999                 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
2000                         if (tlv_len != sizeof(u32))
2001                                 goto invalid_tlv_len;
2002                         pieces->init_evtlog_size =
2003                                         le32_to_cpup((__le32 *)tlv_data);
2004                         break;
2005                 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
2006                         if (tlv_len != sizeof(u32))
2007                                 goto invalid_tlv_len;
2008                         pieces->init_errlog_ptr =
2009                                         le32_to_cpup((__le32 *)tlv_data);
2010                         break;
2011                 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
2012                         if (tlv_len != sizeof(u32))
2013                                 goto invalid_tlv_len;
2014                         pieces->inst_evtlog_ptr =
2015                                         le32_to_cpup((__le32 *)tlv_data);
2016                         break;
2017                 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
2018                         if (tlv_len != sizeof(u32))
2019                                 goto invalid_tlv_len;
2020                         pieces->inst_evtlog_size =
2021                                         le32_to_cpup((__le32 *)tlv_data);
2022                         break;
2023                 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
2024                         if (tlv_len != sizeof(u32))
2025                                 goto invalid_tlv_len;
2026                         pieces->inst_errlog_ptr =
2027                                         le32_to_cpup((__le32 *)tlv_data);
2028                         break;
2029                 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
2030                         if (tlv_len)
2031                                 goto invalid_tlv_len;
2032                         priv->enhance_sensitivity_table = true;
2033                         break;
2034                 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
2035                         if (tlv_len != sizeof(u32))
2036                                 goto invalid_tlv_len;
2037                         capa->standard_phy_calibration_size =
2038                                         le32_to_cpup((__le32 *)tlv_data);
2039                         break;
2040                 default:
2041                         IWL_WARN(priv, "unknown TLV: %d\n", tlv_type);
2042                         break;
2043                 }
2044         }
2045
2046         if (len) {
2047                 IWL_ERR(priv, "invalid TLV after parsing: %zd\n", len);
2048                 iwl_print_hex_dump(priv, IWL_DL_FW, (u8 *)data, len);
2049                 return -EINVAL;
2050         }
2051
2052         return 0;
2053
2054  invalid_tlv_len:
2055         IWL_ERR(priv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
2056         iwl_print_hex_dump(priv, IWL_DL_FW, tlv_data, tlv_len);
2057
2058         return -EINVAL;
2059 }
2060
2061 /**
2062  * iwl_ucode_callback - callback when firmware was loaded
2063  *
2064  * If loaded successfully, copies the firmware into buffers
2065  * for the card to fetch (via DMA).
2066  */
2067 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
2068 {
2069         struct iwl_priv *priv = context;
2070         struct iwl_ucode_header *ucode;
2071         int err;
2072         struct iwlagn_firmware_pieces pieces;
2073         const unsigned int api_max = priv->cfg->ucode_api_max;
2074         const unsigned int api_min = priv->cfg->ucode_api_min;
2075         u32 api_ver;
2076         char buildstr[25];
2077         u32 build;
2078         struct iwlagn_ucode_capabilities ucode_capa = {
2079                 .max_probe_length = 200,
2080                 .standard_phy_calibration_size =
2081                         IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE,
2082         };
2083
2084         memset(&pieces, 0, sizeof(pieces));
2085
2086         if (!ucode_raw) {
2087                 if (priv->fw_index <= priv->cfg->ucode_api_max)
2088                         IWL_ERR(priv,
2089                                 "request for firmware file '%s' failed.\n",
2090                                 priv->firmware_name);
2091                 goto try_again;
2092         }
2093
2094         IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
2095                        priv->firmware_name, ucode_raw->size);
2096
2097         /* Make sure that we got at least the API version number */
2098         if (ucode_raw->size < 4) {
2099                 IWL_ERR(priv, "File size way too small!\n");
2100                 goto try_again;
2101         }
2102
2103         /* Data from ucode file:  header followed by uCode images */
2104         ucode = (struct iwl_ucode_header *)ucode_raw->data;
2105
2106         if (ucode->ver)
2107                 err = iwlagn_load_legacy_firmware(priv, ucode_raw, &pieces);
2108         else
2109                 err = iwlagn_load_firmware(priv, ucode_raw, &pieces,
2110                                            &ucode_capa);
2111
2112         if (err)
2113                 goto try_again;
2114
2115         api_ver = IWL_UCODE_API(priv->ucode_ver);
2116         build = pieces.build;
2117
2118         /*
2119          * api_ver should match the api version forming part of the
2120          * firmware filename ... but we don't check for that and only rely
2121          * on the API version read from firmware header from here on forward
2122          */
2123         if (api_ver < api_min || api_ver > api_max) {
2124                 IWL_ERR(priv, "Driver unable to support your firmware API. "
2125                           "Driver supports v%u, firmware is v%u.\n",
2126                           api_max, api_ver);
2127                 goto try_again;
2128         }
2129
2130         if (api_ver != api_max)
2131                 IWL_ERR(priv, "Firmware has old API version. Expected v%u, "
2132                           "got v%u. New firmware can be obtained "
2133                           "from http://www.intellinuxwireless.org.\n",
2134                           api_max, api_ver);
2135
2136         if (build)
2137                 sprintf(buildstr, " build %u%s", build,
2138                        (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
2139                                 ? " (EXP)" : "");
2140         else
2141                 buildstr[0] = '\0';
2142
2143         IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u%s\n",
2144                  IWL_UCODE_MAJOR(priv->ucode_ver),
2145                  IWL_UCODE_MINOR(priv->ucode_ver),
2146                  IWL_UCODE_API(priv->ucode_ver),
2147                  IWL_UCODE_SERIAL(priv->ucode_ver),
2148                  buildstr);
2149
2150         snprintf(priv->hw->wiphy->fw_version,
2151                  sizeof(priv->hw->wiphy->fw_version),
2152                  "%u.%u.%u.%u%s",
2153                  IWL_UCODE_MAJOR(priv->ucode_ver),
2154                  IWL_UCODE_MINOR(priv->ucode_ver),
2155                  IWL_UCODE_API(priv->ucode_ver),
2156                  IWL_UCODE_SERIAL(priv->ucode_ver),
2157                  buildstr);
2158
2159         /*
2160          * For any of the failures below (before allocating pci memory)
2161          * we will try to load a version with a smaller API -- maybe the
2162          * user just got a corrupted version of the latest API.
2163          */
2164
2165         IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2166                        priv->ucode_ver);
2167         IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %Zd\n",
2168                        pieces.inst_size);
2169         IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %Zd\n",
2170                        pieces.data_size);
2171         IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %Zd\n",
2172                        pieces.init_size);
2173         IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %Zd\n",
2174                        pieces.init_data_size);
2175         IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %Zd\n",
2176                        pieces.boot_size);
2177
2178         /* Verify that uCode images will fit in card's SRAM */
2179         if (pieces.inst_size > priv->hw_params.max_inst_size) {
2180                 IWL_ERR(priv, "uCode instr len %Zd too large to fit in\n",
2181                         pieces.inst_size);
2182                 goto try_again;
2183         }
2184
2185         if (pieces.data_size > priv->hw_params.max_data_size) {
2186                 IWL_ERR(priv, "uCode data len %Zd too large to fit in\n",
2187                         pieces.data_size);
2188                 goto try_again;
2189         }
2190
2191         if (pieces.init_size > priv->hw_params.max_inst_size) {
2192                 IWL_ERR(priv, "uCode init instr len %Zd too large to fit in\n",
2193                         pieces.init_size);
2194                 goto try_again;
2195         }
2196
2197         if (pieces.init_data_size > priv->hw_params.max_data_size) {
2198                 IWL_ERR(priv, "uCode init data len %Zd too large to fit in\n",
2199                         pieces.init_data_size);
2200                 goto try_again;
2201         }
2202
2203         if (pieces.boot_size > priv->hw_params.max_bsm_size) {
2204                 IWL_ERR(priv, "uCode boot instr len %Zd too large to fit in\n",
2205                         pieces.boot_size);
2206                 goto try_again;
2207         }
2208
2209         /* Allocate ucode buffers for card's bus-master loading ... */
2210
2211         /* Runtime instructions and 2 copies of data:
2212          * 1) unmodified from disk
2213          * 2) backup cache for save/restore during power-downs */
2214         priv->ucode_code.len = pieces.inst_size;
2215         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2216
2217         priv->ucode_data.len = pieces.data_size;
2218         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2219
2220         priv->ucode_data_backup.len = pieces.data_size;
2221         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2222
2223         if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2224             !priv->ucode_data_backup.v_addr)
2225                 goto err_pci_alloc;
2226
2227         /* Initialization instructions and data */
2228         if (pieces.init_size && pieces.init_data_size) {
2229                 priv->ucode_init.len = pieces.init_size;
2230                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2231
2232                 priv->ucode_init_data.len = pieces.init_data_size;
2233                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2234
2235                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2236                         goto err_pci_alloc;
2237         }
2238
2239         /* Bootstrap (instructions only, no data) */
2240         if (pieces.boot_size) {
2241                 priv->ucode_boot.len = pieces.boot_size;
2242                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2243
2244                 if (!priv->ucode_boot.v_addr)
2245                         goto err_pci_alloc;
2246         }
2247
2248         /* Now that we can no longer fail, copy information */
2249
2250         /*
2251          * The (size - 16) / 12 formula is based on the information recorded
2252          * for each event, which is of mode 1 (including timestamp) for all
2253          * new microcodes that include this information.
2254          */
2255         priv->_agn.init_evtlog_ptr = pieces.init_evtlog_ptr;
2256         if (pieces.init_evtlog_size)
2257                 priv->_agn.init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
2258         else
2259                 priv->_agn.init_evtlog_size =
2260                         priv->cfg->base_params->max_event_log_size;
2261         priv->_agn.init_errlog_ptr = pieces.init_errlog_ptr;
2262         priv->_agn.inst_evtlog_ptr = pieces.inst_evtlog_ptr;
2263         if (pieces.inst_evtlog_size)
2264                 priv->_agn.inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
2265         else
2266                 priv->_agn.inst_evtlog_size =
2267                         priv->cfg->base_params->max_event_log_size;
2268         priv->_agn.inst_errlog_ptr = pieces.inst_errlog_ptr;
2269
2270         if (ucode_capa.pan) {
2271                 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
2272                 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
2273         } else
2274                 priv->sta_key_max_num = STA_KEY_MAX_NUM;
2275
2276         /* Copy images into buffers for card's bus-master reads ... */
2277
2278         /* Runtime instructions (first block of data in file) */
2279         IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode instr len %Zd\n",
2280                         pieces.inst_size);
2281         memcpy(priv->ucode_code.v_addr, pieces.inst, pieces.inst_size);
2282
2283         IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2284                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2285
2286         /*
2287          * Runtime data
2288          * NOTE:  Copy into backup buffer will be done in iwl_up()
2289          */
2290         IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode data len %Zd\n",
2291                         pieces.data_size);
2292         memcpy(priv->ucode_data.v_addr, pieces.data, pieces.data_size);
2293         memcpy(priv->ucode_data_backup.v_addr, pieces.data, pieces.data_size);
2294
2295         /* Initialization instructions */
2296         if (pieces.init_size) {
2297                 IWL_DEBUG_INFO(priv, "Copying (but not loading) init instr len %Zd\n",
2298                                 pieces.init_size);
2299                 memcpy(priv->ucode_init.v_addr, pieces.init, pieces.init_size);
2300         }
2301
2302         /* Initialization data */
2303         if (pieces.init_data_size) {
2304                 IWL_DEBUG_INFO(priv, "Copying (but not loading) init data len %Zd\n",
2305                                pieces.init_data_size);
2306                 memcpy(priv->ucode_init_data.v_addr, pieces.init_data,
2307                        pieces.init_data_size);
2308         }
2309
2310         /* Bootstrap instructions */
2311         IWL_DEBUG_INFO(priv, "Copying (but not loading) boot instr len %Zd\n",
2312                         pieces.boot_size);
2313         memcpy(priv->ucode_boot.v_addr, pieces.boot, pieces.boot_size);
2314
2315         /*
2316          * figure out the offset of chain noise reset and gain commands
2317          * base on the size of standard phy calibration commands table size
2318          */
2319         if (ucode_capa.standard_phy_calibration_size >
2320             IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
2321                 ucode_capa.standard_phy_calibration_size =
2322                         IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
2323
2324         priv->_agn.phy_calib_chain_noise_reset_cmd =
2325                 ucode_capa.standard_phy_calibration_size;
2326         priv->_agn.phy_calib_chain_noise_gain_cmd =
2327                 ucode_capa.standard_phy_calibration_size + 1;
2328
2329         /**************************************************
2330          * This is still part of probe() in a sense...
2331          *
2332          * 9. Setup and register with mac80211 and debugfs
2333          **************************************************/
2334         err = iwl_mac_setup_register(priv, &ucode_capa);
2335         if (err)
2336                 goto out_unbind;
2337
2338         err = iwl_dbgfs_register(priv, DRV_NAME);
2339         if (err)
2340                 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
2341
2342         err = sysfs_create_group(&priv->pci_dev->dev.kobj,
2343                                         &iwl_attribute_group);
2344         if (err) {
2345                 IWL_ERR(priv, "failed to create sysfs device attributes\n");
2346                 goto out_unbind;
2347         }
2348
2349         /* We have our copies now, allow OS release its copies */
2350         release_firmware(ucode_raw);
2351         complete(&priv->_agn.firmware_loading_complete);
2352         return;
2353
2354  try_again:
2355         /* try next, if any */
2356         if (iwl_request_firmware(priv, false))
2357                 goto out_unbind;
2358         release_firmware(ucode_raw);
2359         return;
2360
2361  err_pci_alloc:
2362         IWL_ERR(priv, "failed to allocate pci memory\n");
2363         iwl_dealloc_ucode_pci(priv);
2364  out_unbind:
2365         complete(&priv->_agn.firmware_loading_complete);
2366         device_release_driver(&priv->pci_dev->dev);
2367         release_firmware(ucode_raw);
2368 }
2369
2370 static const char *desc_lookup_text[] = {
2371         "OK",
2372         "FAIL",
2373         "BAD_PARAM",
2374         "BAD_CHECKSUM",
2375         "NMI_INTERRUPT_WDG",
2376         "SYSASSERT",
2377         "FATAL_ERROR",
2378         "BAD_COMMAND",
2379         "HW_ERROR_TUNE_LOCK",
2380         "HW_ERROR_TEMPERATURE",
2381         "ILLEGAL_CHAN_FREQ",
2382         "VCC_NOT_STABLE",
2383         "FH_ERROR",
2384         "NMI_INTERRUPT_HOST",
2385         "NMI_INTERRUPT_ACTION_PT",
2386         "NMI_INTERRUPT_UNKNOWN",
2387         "UCODE_VERSION_MISMATCH",
2388         "HW_ERROR_ABS_LOCK",
2389         "HW_ERROR_CAL_LOCK_FAIL",
2390         "NMI_INTERRUPT_INST_ACTION_PT",
2391         "NMI_INTERRUPT_DATA_ACTION_PT",
2392         "NMI_TRM_HW_ER",
2393         "NMI_INTERRUPT_TRM",
2394         "NMI_INTERRUPT_BREAK_POINT"
2395         "DEBUG_0",
2396         "DEBUG_1",
2397         "DEBUG_2",
2398         "DEBUG_3",
2399 };
2400
2401 static struct { char *name; u8 num; } advanced_lookup[] = {
2402         { "NMI_INTERRUPT_WDG", 0x34 },
2403         { "SYSASSERT", 0x35 },
2404         { "UCODE_VERSION_MISMATCH", 0x37 },
2405         { "BAD_COMMAND", 0x38 },
2406         { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
2407         { "FATAL_ERROR", 0x3D },
2408         { "NMI_TRM_HW_ERR", 0x46 },
2409         { "NMI_INTERRUPT_TRM", 0x4C },
2410         { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
2411         { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
2412         { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
2413         { "NMI_INTERRUPT_HOST", 0x66 },
2414         { "NMI_INTERRUPT_ACTION_PT", 0x7C },
2415         { "NMI_INTERRUPT_UNKNOWN", 0x84 },
2416         { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
2417         { "ADVANCED_SYSASSERT", 0 },
2418 };
2419
2420 static const char *desc_lookup(u32 num)
2421 {
2422         int i;
2423         int max = ARRAY_SIZE(desc_lookup_text);
2424
2425         if (num < max)
2426                 return desc_lookup_text[num];
2427
2428         max = ARRAY_SIZE(advanced_lookup) - 1;
2429         for (i = 0; i < max; i++) {
2430                 if (advanced_lookup[i].num == num)
2431                         break;;
2432         }
2433         return advanced_lookup[i].name;
2434 }
2435
2436 #define ERROR_START_OFFSET  (1 * sizeof(u32))
2437 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
2438
2439 void iwl_dump_nic_error_log(struct iwl_priv *priv)
2440 {
2441         u32 data2, line;
2442         u32 desc, time, count, base, data1;
2443         u32 blink1, blink2, ilink1, ilink2;
2444         u32 pc, hcmd;
2445
2446         if (priv->ucode_type == UCODE_INIT) {
2447                 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
2448                 if (!base)
2449                         base = priv->_agn.init_errlog_ptr;
2450         } else {
2451                 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
2452                 if (!base)
2453                         base = priv->_agn.inst_errlog_ptr;
2454         }
2455
2456         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
2457                 IWL_ERR(priv,
2458                         "Not valid error log pointer 0x%08X for %s uCode\n",
2459                         base, (priv->ucode_type == UCODE_INIT) ? "Init" : "RT");
2460                 return;
2461         }
2462
2463         count = iwl_read_targ_mem(priv, base);
2464
2465         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
2466                 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
2467                 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
2468                         priv->status, count);
2469         }
2470
2471         desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
2472         priv->isr_stats.err_code = desc;
2473         pc = iwl_read_targ_mem(priv, base + 2 * sizeof(u32));
2474         blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
2475         blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
2476         ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
2477         ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
2478         data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
2479         data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
2480         line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
2481         time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
2482         hcmd = iwl_read_targ_mem(priv, base + 22 * sizeof(u32));
2483
2484         trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, data2, line,
2485                                       blink1, blink2, ilink1, ilink2);
2486
2487         IWL_ERR(priv, "Desc                                  Time       "
2488                 "data1      data2      line\n");
2489         IWL_ERR(priv, "%-28s (0x%04X) %010u 0x%08X 0x%08X %u\n",
2490                 desc_lookup(desc), desc, time, data1, data2, line);
2491         IWL_ERR(priv, "pc      blink1  blink2  ilink1  ilink2  hcmd\n");
2492         IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X 0x%05X 0x%05X\n",
2493                 pc, blink1, blink2, ilink1, ilink2, hcmd);
2494 }
2495
2496 #define EVENT_START_OFFSET  (4 * sizeof(u32))
2497
2498 /**
2499  * iwl_print_event_log - Dump error event log to syslog
2500  *
2501  */
2502 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
2503                                u32 num_events, u32 mode,
2504                                int pos, char **buf, size_t bufsz)
2505 {
2506         u32 i;
2507         u32 base;       /* SRAM byte address of event log header */
2508         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
2509         u32 ptr;        /* SRAM byte address of log data */
2510         u32 ev, time, data; /* event log data */
2511         unsigned long reg_flags;
2512
2513         if (num_events == 0)
2514                 return pos;
2515
2516         if (priv->ucode_type == UCODE_INIT) {
2517                 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
2518                 if (!base)
2519                         base = priv->_agn.init_evtlog_ptr;
2520         } else {
2521                 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2522                 if (!base)
2523                         base = priv->_agn.inst_evtlog_ptr;
2524         }
2525
2526         if (mode == 0)
2527                 event_size = 2 * sizeof(u32);
2528         else
2529                 event_size = 3 * sizeof(u32);
2530
2531         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
2532
2533         /* Make sure device is powered up for SRAM reads */
2534         spin_lock_irqsave(&priv->reg_lock, reg_flags);
2535         iwl_grab_nic_access(priv);
2536
2537         /* Set starting address; reads will auto-increment */
2538         _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
2539         rmb();
2540
2541         /* "time" is actually "data" for mode 0 (no timestamp).
2542         * place event id # at far right for easier visual parsing. */
2543         for (i = 0; i < num_events; i++) {
2544                 ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2545                 time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2546                 if (mode == 0) {
2547                         /* data, ev */
2548                         if (bufsz) {
2549                                 pos += scnprintf(*buf + pos, bufsz - pos,
2550                                                 "EVT_LOG:0x%08x:%04u\n",
2551                                                 time, ev);
2552                         } else {
2553                                 trace_iwlwifi_dev_ucode_event(priv, 0,
2554                                         time, ev);
2555                                 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
2556                                         time, ev);
2557                         }
2558                 } else {
2559                         data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2560                         if (bufsz) {
2561                                 pos += scnprintf(*buf + pos, bufsz - pos,
2562                                                 "EVT_LOGT:%010u:0x%08x:%04u\n",
2563                                                  time, data, ev);
2564                         } else {
2565                                 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
2566                                         time, data, ev);
2567                                 trace_iwlwifi_dev_ucode_event(priv, time,
2568                                         data, ev);
2569                         }
2570                 }
2571         }
2572
2573         /* Allow device to power down */
2574         iwl_release_nic_access(priv);
2575         spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
2576         return pos;
2577 }
2578
2579 /**
2580  * iwl_print_last_event_logs - Dump the newest # of event log to syslog
2581  */
2582 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
2583                                     u32 num_wraps, u32 next_entry,
2584                                     u32 size, u32 mode,
2585                                     int pos, char **buf, size_t bufsz)
2586 {
2587         /*
2588          * display the newest DEFAULT_LOG_ENTRIES entries
2589          * i.e the entries just before the next ont that uCode would fill.
2590          */
2591         if (num_wraps) {
2592                 if (next_entry < size) {
2593                         pos = iwl_print_event_log(priv,
2594                                                 capacity - (size - next_entry),
2595                                                 size - next_entry, mode,
2596                                                 pos, buf, bufsz);
2597                         pos = iwl_print_event_log(priv, 0,
2598                                                   next_entry, mode,
2599                                                   pos, buf, bufsz);
2600                 } else
2601                         pos = iwl_print_event_log(priv, next_entry - size,
2602                                                   size, mode, pos, buf, bufsz);
2603         } else {
2604                 if (next_entry < size) {
2605                         pos = iwl_print_event_log(priv, 0, next_entry,
2606                                                   mode, pos, buf, bufsz);
2607                 } else {
2608                         pos = iwl_print_event_log(priv, next_entry - size,
2609                                                   size, mode, pos, buf, bufsz);
2610                 }
2611         }
2612         return pos;
2613 }
2614
2615 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
2616
2617 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
2618                             char **buf, bool display)
2619 {
2620         u32 base;       /* SRAM byte address of event log header */
2621         u32 capacity;   /* event log capacity in # entries */
2622         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
2623         u32 num_wraps;  /* # times uCode wrapped to top of log */
2624         u32 next_entry; /* index of next entry to be written by uCode */
2625         u32 size;       /* # entries that we'll print */
2626         u32 logsize;
2627         int pos = 0;
2628         size_t bufsz = 0;
2629
2630         if (priv->ucode_type == UCODE_INIT) {
2631                 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
2632                 logsize = priv->_agn.init_evtlog_size;
2633                 if (!base)
2634                         base = priv->_agn.init_evtlog_ptr;
2635         } else {
2636                 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2637                 logsize = priv->_agn.inst_evtlog_size;
2638                 if (!base)
2639                         base = priv->_agn.inst_evtlog_ptr;
2640         }
2641
2642         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
2643                 IWL_ERR(priv,
2644                         "Invalid event log pointer 0x%08X for %s uCode\n",
2645                         base, (priv->ucode_type == UCODE_INIT) ? "Init" : "RT");
2646                 return -EINVAL;
2647         }
2648
2649         /* event log header */
2650         capacity = iwl_read_targ_mem(priv, base);
2651         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
2652         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
2653         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
2654
2655         if (capacity > logsize) {
2656                 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
2657                         capacity, logsize);
2658                 capacity = logsize;
2659         }
2660
2661         if (next_entry > logsize) {
2662                 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
2663                         next_entry, logsize);
2664                 next_entry = logsize;
2665         }
2666
2667         size = num_wraps ? capacity : next_entry;
2668
2669         /* bail out if nothing in log */
2670         if (size == 0) {
2671                 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
2672                 return pos;
2673         }
2674
2675         /* enable/disable bt channel announcement */
2676         priv->bt_ch_announce = iwlagn_bt_ch_announce;
2677
2678 #ifdef CONFIG_IWLWIFI_DEBUG
2679         if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log)
2680                 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2681                         ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2682 #else
2683         size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2684                 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2685 #endif
2686         IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
2687                 size);
2688
2689 #ifdef CONFIG_IWLWIFI_DEBUG
2690         if (display) {
2691                 if (full_log)
2692                         bufsz = capacity * 48;
2693                 else
2694                         bufsz = size * 48;
2695                 *buf = kmalloc(bufsz, GFP_KERNEL);
2696                 if (!*buf)
2697                         return -ENOMEM;
2698         }
2699         if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
2700                 /*
2701                  * if uCode has wrapped back to top of log,
2702                  * start at the oldest entry,
2703                  * i.e the next one that uCode would fill.
2704                  */
2705                 if (num_wraps)
2706                         pos = iwl_print_event_log(priv, next_entry,
2707                                                 capacity - next_entry, mode,
2708                                                 pos, buf, bufsz);
2709                 /* (then/else) start at top of log */
2710                 pos = iwl_print_event_log(priv, 0,
2711                                           next_entry, mode, pos, buf, bufsz);
2712         } else
2713                 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2714                                                 next_entry, size, mode,
2715                                                 pos, buf, bufsz);
2716 #else
2717         pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2718                                         next_entry, size, mode,
2719                                         pos, buf, bufsz);
2720 #endif
2721         return pos;
2722 }
2723
2724 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
2725 {
2726         struct iwl_ct_kill_config cmd;
2727         struct iwl_ct_kill_throttling_config adv_cmd;
2728         unsigned long flags;
2729         int ret = 0;
2730
2731         spin_lock_irqsave(&priv->lock, flags);
2732         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2733                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
2734         spin_unlock_irqrestore(&priv->lock, flags);
2735         priv->thermal_throttle.ct_kill_toggle = false;
2736
2737         if (priv->cfg->base_params->support_ct_kill_exit) {
2738                 adv_cmd.critical_temperature_enter =
2739                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
2740                 adv_cmd.critical_temperature_exit =
2741                         cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
2742
2743                 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2744                                        sizeof(adv_cmd), &adv_cmd);
2745                 if (ret)
2746                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2747                 else
2748                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2749                                         "succeeded, "
2750                                         "critical temperature enter is %d,"
2751                                         "exit is %d\n",
2752                                        priv->hw_params.ct_kill_threshold,
2753                                        priv->hw_params.ct_kill_exit_threshold);
2754         } else {
2755                 cmd.critical_temperature_R =
2756                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
2757
2758                 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2759                                        sizeof(cmd), &cmd);
2760                 if (ret)
2761                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2762                 else
2763                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2764                                         "succeeded, "
2765                                         "critical temperature is %d\n",
2766                                         priv->hw_params.ct_kill_threshold);
2767         }
2768 }
2769
2770 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
2771 {
2772         struct iwl_calib_cfg_cmd calib_cfg_cmd;
2773         struct iwl_host_cmd cmd = {
2774                 .id = CALIBRATION_CFG_CMD,
2775                 .len = sizeof(struct iwl_calib_cfg_cmd),
2776                 .data = &calib_cfg_cmd,
2777         };
2778
2779         memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
2780         calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_INIT_CFG_ALL;
2781         calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
2782
2783         return iwl_send_cmd(priv, &cmd);
2784 }
2785
2786
2787 /**
2788  * iwl_alive_start - called after REPLY_ALIVE notification received
2789  *                   from protocol/runtime uCode (initialization uCode's
2790  *                   Alive gets handled by iwl_init_alive_start()).
2791  */
2792 static void iwl_alive_start(struct iwl_priv *priv)
2793 {
2794         int ret = 0;
2795         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2796
2797         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2798
2799         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2800                 /* We had an error bringing up the hardware, so take it
2801                  * all the way back down so we can try again */
2802                 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2803                 goto restart;
2804         }
2805
2806         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2807          * This is a paranoid check, because we would not have gotten the
2808          * "runtime" alive if code weren't properly loaded.  */
2809         if (iwl_verify_ucode(priv)) {
2810                 /* Runtime instruction load was bad;
2811                  * take it all the way back down so we can try again */
2812                 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2813                 goto restart;
2814         }
2815
2816         ret = priv->cfg->ops->lib->alive_notify(priv);
2817         if (ret) {
2818                 IWL_WARN(priv,
2819                         "Could not complete ALIVE transition [ntf]: %d\n", ret);
2820                 goto restart;
2821         }
2822
2823         if (priv->hw_params.calib_rt_cfg)
2824                 iwlagn_send_calib_cfg_rt(priv, priv->hw_params.calib_rt_cfg);
2825
2826
2827         /* After the ALIVE response, we can send host commands to the uCode */
2828         set_bit(STATUS_ALIVE, &priv->status);
2829
2830         if (priv->cfg->ops->lib->recover_from_tx_stall) {
2831                 /* Enable timer to monitor the driver queues */
2832                 mod_timer(&priv->monitor_recover,
2833                         jiffies +
2834                         msecs_to_jiffies(
2835                           priv->cfg->base_params->monitor_recover_period));
2836         }
2837
2838         if (iwl_is_rfkill(priv))
2839                 return;
2840
2841         if (priv->cfg->bt_params &&
2842             priv->cfg->bt_params->advanced_bt_coexist) {
2843                 /* Configure Bluetooth device coexistence support */
2844                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
2845                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
2846                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
2847                 priv->cfg->ops->hcmd->send_bt_config(priv);
2848                 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
2849                 if (bt_coex_active && priv->iw_mode != NL80211_IFTYPE_ADHOC)
2850                         iwlagn_send_prio_tbl(priv);
2851
2852                 /* FIXME: w/a to force change uCode BT state machine */
2853                 iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
2854                         BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
2855                 iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
2856                         BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
2857         }
2858         ieee80211_wake_queues(priv->hw);
2859
2860         priv->active_rate = IWL_RATES_MASK;
2861
2862         /* Configure Tx antenna selection based on H/W config */
2863         if (priv->cfg->ops->hcmd->set_tx_ant)
2864                 priv->cfg->ops->hcmd->set_tx_ant(priv, priv->cfg->valid_tx_ant);
2865
2866         if (iwl_is_associated_ctx(ctx)) {
2867                 struct iwl_rxon_cmd *active_rxon =
2868                                 (struct iwl_rxon_cmd *)&ctx->active;
2869                 /* apply any changes in staging */
2870                 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
2871                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2872         } else {
2873                 struct iwl_rxon_context *tmp;
2874                 /* Initialize our rx_config data */
2875                 for_each_context(priv, tmp)
2876                         iwl_connection_init_rx_config(priv, tmp);
2877
2878                 if (priv->cfg->ops->hcmd->set_rxon_chain)
2879                         priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
2880         }
2881
2882         if (priv->cfg->bt_params &&
2883             !priv->cfg->bt_params->advanced_bt_coexist) {
2884                 /* Configure Bluetooth device coexistence support */
2885                 priv->cfg->ops->hcmd->send_bt_config(priv);
2886         }
2887
2888         iwl_reset_run_time_calib(priv);
2889
2890         /* Configure the adapter for unassociated operation */
2891         iwlcore_commit_rxon(priv, ctx);
2892
2893         /* At this point, the NIC is initialized and operational */
2894         iwl_rf_kill_ct_config(priv);
2895
2896         iwl_leds_init(priv);
2897
2898         IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2899         set_bit(STATUS_READY, &priv->status);
2900         wake_up_interruptible(&priv->wait_command_queue);
2901
2902         iwl_power_update_mode(priv, true);
2903         IWL_DEBUG_INFO(priv, "Updated power mode\n");
2904
2905
2906         return;
2907
2908  restart:
2909         queue_work(priv->workqueue, &priv->restart);
2910 }
2911
2912 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2913
2914 static void __iwl_down(struct iwl_priv *priv)
2915 {
2916         unsigned long flags;
2917         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2918
2919         IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2920
2921         iwl_scan_cancel_timeout(priv, 200);
2922
2923         exit_pending = test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
2924
2925         /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
2926          * to prevent rearm timer */
2927         if (priv->cfg->ops->lib->recover_from_tx_stall)
2928                 del_timer_sync(&priv->monitor_recover);
2929
2930         iwl_clear_ucode_stations(priv, NULL);
2931         iwl_dealloc_bcast_stations(priv);
2932         iwl_clear_driver_stations(priv);
2933
2934         /* reset BT coex data */
2935         priv->bt_status = 0;
2936         if (priv->cfg->bt_params)
2937                 priv->bt_traffic_load =
2938                          priv->cfg->bt_params->bt_init_traffic_load;
2939         else
2940                 priv->bt_traffic_load = 0;
2941         priv->bt_sco_active = false;
2942         priv->bt_full_concurrent = false;
2943         priv->bt_ci_compliance = 0;
2944
2945         /* Unblock any waiting calls */
2946         wake_up_interruptible_all(&priv->wait_command_queue);
2947
2948         /* Wipe out the EXIT_PENDING status bit if we are not actually
2949          * exiting the module */
2950         if (!exit_pending)
2951                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2952
2953         /* stop and reset the on-board processor */
2954         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2955
2956         /* tell the device to stop sending interrupts */
2957         spin_lock_irqsave(&priv->lock, flags);
2958         iwl_disable_interrupts(priv);
2959         spin_unlock_irqrestore(&priv->lock, flags);
2960         iwl_synchronize_irq(priv);
2961
2962         if (priv->mac80211_registered)
2963                 ieee80211_stop_queues(priv->hw);
2964
2965         /* If we have not previously called iwl_init() then
2966          * clear all bits but the RF Kill bit and return */
2967         if (!iwl_is_init(priv)) {
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_EXIT_PENDING, &priv->status) <<
2973                                         STATUS_EXIT_PENDING;
2974                 goto exit;
2975         }
2976
2977         /* ...otherwise clear out all the status bits but the RF Kill
2978          * bit and continue taking the NIC down. */
2979         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2980                                 STATUS_RF_KILL_HW |
2981                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2982                                 STATUS_GEO_CONFIGURED |
2983                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2984                                 STATUS_FW_ERROR |
2985                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2986                                 STATUS_EXIT_PENDING;
2987
2988         /* device going down, Stop using ICT table */
2989         iwl_disable_ict(priv);
2990
2991         iwlagn_txq_ctx_stop(priv);
2992         iwlagn_rxq_stop(priv);
2993
2994         /* Power-down device's busmaster DMA clocks */
2995         iwl_write_prph(priv, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT);
2996         udelay(5);
2997
2998         /* Make sure (redundant) we've released our request to stay awake */
2999         iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3000
3001         /* Stop the device, and put it in low power state */
3002         priv->cfg->ops->lib->apm_ops.stop(priv);
3003
3004  exit:
3005         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
3006
3007         if (priv->ibss_beacon)
3008                 dev_kfree_skb(priv->ibss_beacon);
3009         priv->ibss_beacon = NULL;
3010
3011         /* clear out any free frames */
3012         iwl_clear_free_frames(priv);
3013 }
3014
3015 static void iwl_down(struct iwl_priv *priv)
3016 {
3017         mutex_lock(&priv->mutex);
3018         __iwl_down(priv);
3019         mutex_unlock(&priv->mutex);
3020
3021         iwl_cancel_deferred_work(priv);
3022 }
3023
3024 #define HW_READY_TIMEOUT (50)
3025
3026 static int iwl_set_hw_ready(struct iwl_priv *priv)
3027 {
3028         int ret = 0;
3029
3030         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
3031                 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY);
3032
3033         /* See if we got it */
3034         ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
3035                                 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
3036                                 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
3037                                 HW_READY_TIMEOUT);
3038         if (ret != -ETIMEDOUT)
3039                 priv->hw_ready = true;
3040         else
3041                 priv->hw_ready = false;
3042
3043         IWL_DEBUG_INFO(priv, "hardware %s\n",
3044                       (priv->hw_ready == 1) ? "ready" : "not ready");
3045         return ret;
3046 }
3047
3048 static int iwl_prepare_card_hw(struct iwl_priv *priv)
3049 {
3050         int ret = 0;
3051
3052         IWL_DEBUG_INFO(priv, "iwl_prepare_card_hw enter\n");
3053
3054         ret = iwl_set_hw_ready(priv);
3055         if (priv->hw_ready)
3056                 return ret;
3057
3058         /* If HW is not ready, prepare the conditions to check again */
3059         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
3060                         CSR_HW_IF_CONFIG_REG_PREPARE);
3061
3062         ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
3063                         ~CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE,
3064                         CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, 150000);
3065
3066         /* HW should be ready by now, check again. */
3067         if (ret != -ETIMEDOUT)
3068                 iwl_set_hw_ready(priv);
3069
3070         return ret;
3071 }
3072
3073 #define MAX_HW_RESTARTS 5
3074
3075 static int __iwl_up(struct iwl_priv *priv)
3076 {
3077         struct iwl_rxon_context *ctx;
3078         int i;
3079         int ret;
3080
3081         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3082                 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
3083                 return -EIO;
3084         }
3085
3086         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
3087                 IWL_ERR(priv, "ucode not available for device bringup\n");
3088                 return -EIO;
3089         }
3090
3091         for_each_context(priv, ctx) {
3092                 ret = iwlagn_alloc_bcast_station(priv, ctx);
3093                 if (ret) {
3094                         iwl_dealloc_bcast_stations(priv);
3095                         return ret;
3096                 }
3097         }
3098
3099         iwl_prepare_card_hw(priv);
3100
3101         if (!priv->hw_ready) {
3102                 IWL_WARN(priv, "Exit HW not ready\n");
3103                 return -EIO;
3104         }
3105
3106         /* If platform's RF_KILL switch is NOT set to KILL */
3107         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3108                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3109         else
3110                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3111
3112         if (iwl_is_rfkill(priv)) {
3113                 wiphy_rfkill_set_hw_state(priv->hw->wiphy, true);
3114
3115                 iwl_enable_interrupts(priv);
3116                 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
3117                 return 0;
3118         }
3119
3120         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3121
3122         /* must be initialised before iwl_hw_nic_init */
3123         if (priv->valid_contexts != BIT(IWL_RXON_CTX_BSS))
3124                 priv->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
3125         else
3126                 priv->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
3127
3128         ret = iwlagn_hw_nic_init(priv);
3129         if (ret) {
3130                 IWL_ERR(priv, "Unable to init nic\n");
3131                 return ret;
3132         }
3133
3134         /* make sure rfkill handshake bits are cleared */
3135         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3136         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3137                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3138
3139         /* clear (again), then enable host interrupts */
3140         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3141         iwl_enable_interrupts(priv);
3142
3143         /* really make sure rfkill handshake bits are cleared */
3144         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3145         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3146
3147         /* Copy original ucode data image from disk into backup cache.
3148          * This will be used to initialize the on-board processor's
3149          * data SRAM for a clean start when the runtime program first loads. */
3150         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
3151                priv->ucode_data.len);
3152
3153         for (i = 0; i < MAX_HW_RESTARTS; i++) {
3154
3155                 /* load bootstrap state machine,
3156                  * load bootstrap program into processor's memory,
3157                  * prepare to load the "initialize" uCode */
3158                 ret = priv->cfg->ops->lib->load_ucode(priv);
3159
3160                 if (ret) {
3161                         IWL_ERR(priv, "Unable to set up bootstrap uCode: %d\n",
3162                                 ret);
3163                         continue;
3164                 }
3165
3166                 /* start card; "initialize" will load runtime ucode */
3167                 iwl_nic_start(priv);
3168
3169                 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
3170
3171                 return 0;
3172         }
3173
3174         set_bit(STATUS_EXIT_PENDING, &priv->status);
3175         __iwl_down(priv);
3176         clear_bit(STATUS_EXIT_PENDING, &priv->status);
3177
3178         /* tried to restart and config the device for as long as our
3179          * patience could withstand */
3180         IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
3181         return -EIO;
3182 }
3183
3184
3185 /*****************************************************************************
3186  *
3187  * Workqueue callbacks
3188  *
3189  *****************************************************************************/
3190
3191 static void iwl_bg_init_alive_start(struct work_struct *data)
3192 {
3193         struct iwl_priv *priv =
3194             container_of(data, struct iwl_priv, init_alive_start.work);
3195
3196         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3197                 return;
3198
3199         mutex_lock(&priv->mutex);
3200         priv->cfg->ops->lib->init_alive_start(priv);
3201         mutex_unlock(&priv->mutex);
3202 }
3203
3204 static void iwl_bg_alive_start(struct work_struct *data)
3205 {
3206         struct iwl_priv *priv =
3207             container_of(data, struct iwl_priv, alive_start.work);
3208
3209         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3210                 return;
3211
3212         /* enable dram interrupt */
3213         iwl_reset_ict(priv);
3214
3215         mutex_lock(&priv->mutex);
3216         iwl_alive_start(priv);
3217         mutex_unlock(&priv->mutex);
3218 }
3219
3220 static void iwl_bg_run_time_calib_work(struct work_struct *work)
3221 {
3222         struct iwl_priv *priv = container_of(work, struct iwl_priv,
3223                         run_time_calib_work);
3224
3225         mutex_lock(&priv->mutex);
3226
3227         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
3228             test_bit(STATUS_SCANNING, &priv->status)) {
3229                 mutex_unlock(&priv->mutex);
3230                 return;
3231         }
3232
3233         if (priv->start_calib) {
3234                 if (priv->cfg->bt_params &&
3235                     priv->cfg->bt_params->bt_statistics) {
3236                         iwl_chain_noise_calibration(priv,
3237                                         (void *)&priv->_agn.statistics_bt);
3238                         iwl_sensitivity_calibration(priv,
3239                                         (void *)&priv->_agn.statistics_bt);
3240                 } else {
3241                         iwl_chain_noise_calibration(priv,
3242                                         (void *)&priv->_agn.statistics);
3243                         iwl_sensitivity_calibration(priv,
3244                                         (void *)&priv->_agn.statistics);
3245                 }
3246         }
3247
3248         mutex_unlock(&priv->mutex);
3249 }
3250
3251 static void iwl_bg_restart(struct work_struct *data)
3252 {
3253         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3254
3255         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3256                 return;
3257
3258         if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
3259                 struct iwl_rxon_context *ctx;
3260                 bool bt_sco, bt_full_concurrent;
3261                 u8 bt_ci_compliance;
3262                 u8 bt_load;
3263                 u8 bt_status;
3264
3265                 mutex_lock(&priv->mutex);
3266                 for_each_context(priv, ctx)
3267                         ctx->vif = NULL;
3268                 priv->is_open = 0;
3269
3270                 /*
3271                  * __iwl_down() will clear the BT status variables,
3272                  * which is correct, but when we restart we really
3273                  * want to keep them so restore them afterwards.
3274                  *
3275                  * The restart process will later pick them up and
3276                  * re-configure the hw when we reconfigure the BT
3277                  * command.
3278                  */
3279                 bt_sco = priv->bt_sco_active;
3280                 bt_full_concurrent = priv->bt_full_concurrent;
3281                 bt_ci_compliance = priv->bt_ci_compliance;
3282                 bt_load = priv->bt_traffic_load;
3283                 bt_status = priv->bt_status;
3284
3285                 __iwl_down(priv);
3286
3287                 priv->bt_sco_active = bt_sco;
3288                 priv->bt_full_concurrent = bt_full_concurrent;
3289                 priv->bt_ci_compliance = bt_ci_compliance;
3290                 priv->bt_traffic_load = bt_load;
3291                 priv->bt_status = bt_status;
3292
3293                 mutex_unlock(&priv->mutex);
3294                 iwl_cancel_deferred_work(priv);
3295                 ieee80211_restart_hw(priv->hw);
3296         } else {
3297                 iwl_down(priv);
3298
3299                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3300                         return;
3301
3302                 mutex_lock(&priv->mutex);
3303                 __iwl_up(priv);
3304                 mutex_unlock(&priv->mutex);
3305         }
3306 }
3307
3308 static void iwl_bg_rx_replenish(struct work_struct *data)
3309 {
3310         struct iwl_priv *priv =
3311             container_of(data, struct iwl_priv, rx_replenish);
3312
3313         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3314                 return;
3315
3316         mutex_lock(&priv->mutex);
3317         iwlagn_rx_replenish(priv);
3318         mutex_unlock(&priv->mutex);
3319 }
3320
3321 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3322
3323 void iwl_post_associate(struct iwl_priv *priv, struct ieee80211_vif *vif)
3324 {
3325         struct iwl_rxon_context *ctx;
3326         struct ieee80211_conf *conf = NULL;
3327         int ret = 0;
3328
3329         if (!vif || !priv->is_open)
3330                 return;
3331
3332         ctx = iwl_rxon_ctx_from_vif(vif);
3333
3334         if (vif->type == NL80211_IFTYPE_AP) {
3335                 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
3336                 return;
3337         }
3338
3339         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3340                 return;
3341
3342         iwl_scan_cancel_timeout(priv, 200);
3343
3344         conf = ieee80211_get_hw_conf(priv->hw);
3345
3346         ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3347         iwlcore_commit_rxon(priv, ctx);
3348
3349         ret = iwl_send_rxon_timing(priv, ctx);
3350         if (ret)
3351                 IWL_WARN(priv, "RXON timing - "
3352                             "Attempting to continue.\n");
3353
3354         ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
3355
3356         iwl_set_rxon_ht(priv, &priv->current_ht_config);
3357
3358         if (priv->cfg->ops->hcmd->set_rxon_chain)
3359                 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
3360
3361         ctx->staging.assoc_id = cpu_to_le16(vif->bss_conf.aid);
3362
3363         IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3364                         vif->bss_conf.aid, vif->bss_conf.beacon_int);
3365
3366         if (vif->bss_conf.use_short_preamble)
3367                 ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3368         else
3369                 ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3370
3371         if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK) {
3372                 if (vif->bss_conf.use_short_slot)
3373                         ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
3374                 else
3375                         ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3376         }
3377
3378         iwlcore_commit_rxon(priv, ctx);
3379
3380         IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3381                         vif->bss_conf.aid, ctx->active.bssid_addr);
3382
3383         switch (vif->type) {
3384         case NL80211_IFTYPE_STATION:
3385                 break;
3386         case NL80211_IFTYPE_ADHOC:
3387                 iwl_send_beacon_cmd(priv);
3388                 break;
3389         default:
3390                 IWL_ERR(priv, "%s Should not be called in %d mode\n",
3391                           __func__, vif->type);
3392                 break;
3393         }
3394
3395         /* the chain noise calibration will enabled PM upon completion
3396          * If chain noise has already been run, then we need to enable
3397          * power management here */
3398         if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
3399                 iwl_power_update_mode(priv, false);
3400
3401         /* Enable Rx differential gain and sensitivity calibrations */
3402         iwl_chain_noise_reset(priv);
3403         priv->start_calib = 1;
3404
3405 }
3406
3407 /*****************************************************************************
3408  *
3409  * mac80211 entry point functions
3410  *
3411  *****************************************************************************/
3412
3413 #define UCODE_READY_TIMEOUT     (4 * HZ)
3414
3415 /*
3416  * Not a mac80211 entry point function, but it fits in with all the
3417  * other mac80211 functions grouped here.
3418  */
3419 static int iwl_mac_setup_register(struct iwl_priv *priv,
3420                                   struct iwlagn_ucode_capabilities *capa)
3421 {
3422         int ret;
3423         struct ieee80211_hw *hw = priv->hw;
3424         struct iwl_rxon_context *ctx;
3425
3426         hw->rate_control_algorithm = "iwl-agn-rs";
3427
3428         /* Tell mac80211 our characteristics */
3429         hw->flags = IEEE80211_HW_SIGNAL_DBM |
3430                     IEEE80211_HW_AMPDU_AGGREGATION |
3431                     IEEE80211_HW_NEED_DTIM_PERIOD |
3432                     IEEE80211_HW_SPECTRUM_MGMT;
3433
3434         if (!priv->cfg->base_params->broken_powersave)
3435                 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
3436                              IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
3437
3438         if (priv->cfg->sku & IWL_SKU_N)
3439                 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
3440                              IEEE80211_HW_SUPPORTS_STATIC_SMPS;
3441
3442         hw->sta_data_size = sizeof(struct iwl_station_priv);
3443         hw->vif_data_size = sizeof(struct iwl_vif_priv);
3444
3445         for_each_context(priv, ctx) {
3446                 hw->wiphy->interface_modes |= ctx->interface_modes;
3447                 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
3448         }
3449
3450         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
3451                             WIPHY_FLAG_DISABLE_BEACON_HINTS;
3452
3453         /*
3454          * For now, disable PS by default because it affects
3455          * RX performance significantly.
3456          */
3457         hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
3458
3459         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
3460         /* we create the 802.11 header and a zero-length SSID element */
3461         hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2;
3462
3463         /* Default value; 4 EDCA QOS priorities */
3464         hw->queues = 4;
3465
3466         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
3467
3468         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
3469                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3470                         &priv->bands[IEEE80211_BAND_2GHZ];
3471         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
3472                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
3473                         &priv->bands[IEEE80211_BAND_5GHZ];
3474
3475         ret = ieee80211_register_hw(priv->hw);
3476         if (ret) {
3477                 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
3478                 return ret;
3479         }
3480         priv->mac80211_registered = 1;
3481
3482         return 0;
3483 }
3484
3485
3486 static int iwl_mac_start(struct ieee80211_hw *hw)
3487 {
3488         struct iwl_priv *priv = hw->priv;
3489         int ret;
3490
3491         IWL_DEBUG_MAC80211(priv, "enter\n");
3492
3493         /* we should be verifying the device is ready to be opened */
3494         mutex_lock(&priv->mutex);
3495         ret = __iwl_up(priv);
3496         mutex_unlock(&priv->mutex);
3497
3498         if (ret)
3499                 return ret;
3500
3501         if (iwl_is_rfkill(priv))
3502                 goto out;
3503
3504         IWL_DEBUG_INFO(priv, "Start UP work done.\n");
3505
3506         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
3507          * mac80211 will not be run successfully. */
3508         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3509                         test_bit(STATUS_READY, &priv->status),
3510                         UCODE_READY_TIMEOUT);
3511         if (!ret) {
3512                 if (!test_bit(STATUS_READY, &priv->status)) {
3513                         IWL_ERR(priv, "START_ALIVE timeout after %dms.\n",
3514                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3515                         return -ETIMEDOUT;
3516                 }
3517         }
3518
3519         iwl_led_start(priv);
3520
3521 out:
3522         priv->is_open = 1;
3523         IWL_DEBUG_MAC80211(priv, "leave\n");
3524         return 0;
3525 }
3526
3527 static void iwl_mac_stop(struct ieee80211_hw *hw)
3528 {
3529         struct iwl_priv *priv = hw->priv;
3530
3531         IWL_DEBUG_MAC80211(priv, "enter\n");
3532
3533         if (!priv->is_open)
3534                 return;
3535
3536         priv->is_open = 0;
3537
3538         iwl_down(priv);
3539
3540         flush_workqueue(priv->workqueue);
3541
3542         /* enable interrupts again in order to receive rfkill changes */
3543         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3544         iwl_enable_interrupts(priv);
3545
3546         IWL_DEBUG_MAC80211(priv, "leave\n");
3547 }
3548
3549 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3550 {
3551         struct iwl_priv *priv = hw->priv;
3552
3553         IWL_DEBUG_MACDUMP(priv, "enter\n");
3554
3555         IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3556                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3557
3558         if (iwlagn_tx_skb(priv, skb))
3559                 dev_kfree_skb_any(skb);
3560
3561         IWL_DEBUG_MACDUMP(priv, "leave\n");
3562         return NETDEV_TX_OK;
3563 }
3564
3565 void iwl_config_ap(struct iwl_priv *priv, struct ieee80211_vif *vif)
3566 {
3567         struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
3568         int ret = 0;
3569
3570         lockdep_assert_held(&priv->mutex);
3571
3572         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3573                 return;
3574
3575         /* The following should be done only at AP bring up */
3576         if (!iwl_is_associated_ctx(ctx)) {
3577
3578                 /* RXON - unassoc (to set timing command) */
3579                 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3580                 iwlcore_commit_rxon(priv, ctx);
3581
3582                 /* RXON Timing */
3583                 ret = iwl_send_rxon_timing(priv, ctx);
3584                 if (ret)
3585                         IWL_WARN(priv, "RXON timing failed - "
3586                                         "Attempting to continue.\n");
3587
3588                 /* AP has all antennas */
3589                 priv->chain_noise_data.active_chains =
3590                         priv->hw_params.valid_rx_ant;
3591                 iwl_set_rxon_ht(priv, &priv->current_ht_config);
3592                 if (priv->cfg->ops->hcmd->set_rxon_chain)
3593                         priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
3594
3595                 ctx->staging.assoc_id = 0;
3596
3597                 if (vif->bss_conf.use_short_preamble)
3598                         ctx->staging.flags |=
3599                                 RXON_FLG_SHORT_PREAMBLE_MSK;
3600                 else
3601                         ctx->staging.flags &=
3602                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3603
3604                 if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK) {
3605                         if (vif->bss_conf.use_short_slot)
3606                                 ctx->staging.flags |=
3607                                         RXON_FLG_SHORT_SLOT_MSK;
3608                         else
3609                                 ctx->staging.flags &=
3610                                         ~RXON_FLG_SHORT_SLOT_MSK;
3611                 }
3612                 /* need to send beacon cmd before committing assoc RXON! */
3613                 iwl_send_beacon_cmd(priv);
3614                 /* restore RXON assoc */
3615                 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
3616                 iwlcore_commit_rxon(priv, ctx);
3617         }
3618         iwl_send_beacon_cmd(priv);
3619
3620         /* FIXME - we need to add code here to detect a totally new
3621          * configuration, reset the AP, unassoc, rxon timing, assoc,
3622          * clear sta table, add BCAST sta... */
3623 }
3624
3625 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
3626                                     struct ieee80211_vif *vif,
3627                                     struct ieee80211_key_conf *keyconf,
3628                                     struct ieee80211_sta *sta,
3629                                     u32 iv32, u16 *phase1key)
3630 {
3631
3632         struct iwl_priv *priv = hw->priv;
3633         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
3634
3635         IWL_DEBUG_MAC80211(priv, "enter\n");
3636
3637         iwl_update_tkip_key(priv, vif_priv->ctx, keyconf, sta,
3638                             iv32, phase1key);
3639
3640         IWL_DEBUG_MAC80211(priv, "leave\n");
3641 }
3642
3643 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3644                            struct ieee80211_vif *vif,
3645                            struct ieee80211_sta *sta,
3646                            struct ieee80211_key_conf *key)
3647 {
3648         struct iwl_priv *priv = hw->priv;
3649         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
3650         struct iwl_rxon_context *ctx = vif_priv->ctx;
3651         int ret;
3652         u8 sta_id;
3653         bool is_default_wep_key = false;
3654
3655         IWL_DEBUG_MAC80211(priv, "enter\n");
3656
3657         if (priv->cfg->mod_params->sw_crypto) {
3658                 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
3659                 return -EOPNOTSUPP;
3660         }
3661
3662         sta_id = iwl_sta_id_or_broadcast(priv, vif_priv->ctx, sta);
3663         if (sta_id == IWL_INVALID_STATION)
3664                 return -EINVAL;
3665
3666         mutex_lock(&priv->mutex);
3667         iwl_scan_cancel_timeout(priv, 100);
3668
3669         /*
3670          * If we are getting WEP group key and we didn't receive any key mapping
3671          * so far, we are in legacy wep mode (group key only), otherwise we are
3672          * in 1X mode.
3673          * In legacy wep mode, we use another host command to the uCode.
3674          */
3675         if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
3676              key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
3677             !sta) {
3678                 if (cmd == SET_KEY)
3679                         is_default_wep_key = !ctx->key_mapping_keys;
3680                 else
3681                         is_default_wep_key =
3682                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3683         }
3684
3685         switch (cmd) {
3686         case SET_KEY:
3687                 if (is_default_wep_key)
3688                         ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
3689                 else
3690                         ret = iwl_set_dynamic_key(priv, vif_priv->ctx,
3691                                                   key, sta_id);
3692
3693                 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
3694                 break;
3695         case DISABLE_KEY:
3696                 if (is_default_wep_key)
3697                         ret = iwl_remove_default_wep_key(priv, ctx, key);
3698                 else
3699                         ret = iwl_remove_dynamic_key(priv, ctx, key, sta_id);
3700
3701                 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
3702                 break;
3703         default:
3704                 ret = -EINVAL;
3705         }
3706
3707         mutex_unlock(&priv->mutex);
3708         IWL_DEBUG_MAC80211(priv, "leave\n");
3709
3710         return ret;
3711 }
3712
3713 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
3714                                 struct ieee80211_vif *vif,
3715                                 enum ieee80211_ampdu_mlme_action action,
3716                                 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3717 {
3718         struct iwl_priv *priv = hw->priv;
3719         int ret = -EINVAL;
3720
3721         IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
3722                      sta->addr, tid);
3723
3724         if (!(priv->cfg->sku & IWL_SKU_N))
3725                 return -EACCES;
3726
3727         mutex_lock(&priv->mutex);
3728
3729         switch (action) {
3730         case IEEE80211_AMPDU_RX_START:
3731                 IWL_DEBUG_HT(priv, "start Rx\n");
3732                 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
3733                 break;
3734         case IEEE80211_AMPDU_RX_STOP:
3735                 IWL_DEBUG_HT(priv, "stop Rx\n");
3736                 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
3737                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3738                         ret = 0;
3739                 break;
3740         case IEEE80211_AMPDU_TX_START:
3741                 IWL_DEBUG_HT(priv, "start Tx\n");
3742                 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
3743                 if (ret == 0) {
3744                         priv->_agn.agg_tids_count++;
3745                         IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
3746                                      priv->_agn.agg_tids_count);
3747                 }
3748                 break;
3749         case IEEE80211_AMPDU_TX_STOP:
3750                 IWL_DEBUG_HT(priv, "stop Tx\n");
3751                 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
3752                 if ((ret == 0) && (priv->_agn.agg_tids_count > 0)) {
3753                         priv->_agn.agg_tids_count--;
3754                         IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
3755                                      priv->_agn.agg_tids_count);
3756                 }
3757                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3758                         ret = 0;
3759                 if (priv->cfg->ht_params &&
3760                     priv->cfg->ht_params->use_rts_for_aggregation) {
3761                         struct iwl_station_priv *sta_priv =
3762                                 (void *) sta->drv_priv;
3763                         /*
3764                          * switch off RTS/CTS if it was previously enabled
3765                          */
3766
3767                         sta_priv->lq_sta.lq.general_params.flags &=
3768                                 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
3769                         iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
3770                                         &sta_priv->lq_sta.lq, CMD_ASYNC, false);
3771                 }
3772                 break;
3773         case IEEE80211_AMPDU_TX_OPERATIONAL:
3774                 if (priv->cfg->ht_params &&
3775                     priv->cfg->ht_params->use_rts_for_aggregation) {
3776                         struct iwl_station_priv *sta_priv =
3777                                 (void *) sta->drv_priv;
3778
3779                         /*
3780                          * switch to RTS/CTS if it is the prefer protection
3781                          * method for HT traffic
3782                          */
3783
3784                         sta_priv->lq_sta.lq.general_params.flags |=
3785                                 LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
3786                         iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
3787                                         &sta_priv->lq_sta.lq, CMD_ASYNC, false);
3788                 }
3789                 ret = 0;
3790                 break;
3791         }
3792         mutex_unlock(&priv->mutex);
3793
3794         return ret;
3795 }
3796
3797 static void iwl_mac_sta_notify(struct ieee80211_hw *hw,
3798                                struct ieee80211_vif *vif,
3799                                enum sta_notify_cmd cmd,
3800                                struct ieee80211_sta *sta)
3801 {
3802         struct iwl_priv *priv = hw->priv;
3803         struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
3804         int sta_id;
3805
3806         switch (cmd) {
3807         case STA_NOTIFY_SLEEP:
3808                 WARN_ON(!sta_priv->client);
3809                 sta_priv->asleep = true;
3810                 if (atomic_read(&sta_priv->pending_frames) > 0)
3811                         ieee80211_sta_block_awake(hw, sta, true);
3812                 break;
3813         case STA_NOTIFY_AWAKE:
3814                 WARN_ON(!sta_priv->client);
3815                 if (!sta_priv->asleep)
3816                         break;
3817                 sta_priv->asleep = false;
3818                 sta_id = iwl_sta_id(sta);
3819                 if (sta_id != IWL_INVALID_STATION)
3820                         iwl_sta_modify_ps_wake(priv, sta_id);
3821                 break;
3822         default:
3823                 break;
3824         }
3825 }
3826
3827 static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
3828                               struct ieee80211_vif *vif,
3829                               struct ieee80211_sta *sta)
3830 {
3831         struct iwl_priv *priv = hw->priv;
3832         struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
3833         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
3834         bool is_ap = vif->type == NL80211_IFTYPE_STATION;
3835         int ret;
3836         u8 sta_id;
3837
3838         IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
3839                         sta->addr);
3840         mutex_lock(&priv->mutex);
3841         IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
3842                         sta->addr);
3843         sta_priv->common.sta_id = IWL_INVALID_STATION;
3844
3845         atomic_set(&sta_priv->pending_frames, 0);
3846         if (vif->type == NL80211_IFTYPE_AP)
3847                 sta_priv->client = true;
3848
3849         ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
3850                                      is_ap, sta, &sta_id);
3851         if (ret) {
3852                 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
3853                         sta->addr, ret);
3854                 /* Should we return success if return code is EEXIST ? */
3855                 mutex_unlock(&priv->mutex);
3856                 return ret;
3857         }
3858
3859         sta_priv->common.sta_id = sta_id;
3860
3861         /* Initialize rate scaling */
3862         IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
3863                        sta->addr);
3864         iwl_rs_rate_init(priv, sta, sta_id);
3865         mutex_unlock(&priv->mutex);
3866
3867         return 0;
3868 }
3869
3870 static void iwl_mac_channel_switch(struct ieee80211_hw *hw,
3871                                    struct ieee80211_channel_switch *ch_switch)
3872 {
3873         struct iwl_priv *priv = hw->priv;
3874         const struct iwl_channel_info *ch_info;
3875         struct ieee80211_conf *conf = &hw->conf;
3876         struct ieee80211_channel *channel = ch_switch->channel;
3877         struct iwl_ht_config *ht_conf = &priv->current_ht_config;
3878         /*
3879          * MULTI-FIXME
3880          * When we add support for multiple interfaces, we need to
3881          * revisit this. The channel switch command in the device
3882          * only affects the BSS context, but what does that really
3883          * mean? And what if we get a CSA on the second interface?
3884          * This needs a lot of work.
3885          */
3886         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
3887         u16 ch;
3888         unsigned long flags = 0;
3889
3890         IWL_DEBUG_MAC80211(priv, "enter\n");
3891
3892         if (iwl_is_rfkill(priv))
3893                 goto out_exit;
3894
3895         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
3896             test_bit(STATUS_SCANNING, &priv->status))
3897                 goto out_exit;
3898
3899         if (!iwl_is_associated_ctx(ctx))
3900                 goto out_exit;
3901
3902         /* channel switch in progress */
3903         if (priv->switch_rxon.switch_in_progress == true)
3904                 goto out_exit;
3905
3906         mutex_lock(&priv->mutex);
3907         if (priv->cfg->ops->lib->set_channel_switch) {
3908
3909                 ch = channel->hw_value;
3910                 if (le16_to_cpu(ctx->active.channel) != ch) {
3911                         ch_info = iwl_get_channel_info(priv,
3912                                                        channel->band,
3913                                                        ch);
3914                         if (!is_channel_valid(ch_info)) {
3915                                 IWL_DEBUG_MAC80211(priv, "invalid channel\n");
3916                                 goto out;
3917                         }
3918                         spin_lock_irqsave(&priv->lock, flags);
3919
3920                         priv->current_ht_config.smps = conf->smps_mode;
3921
3922                         /* Configure HT40 channels */
3923                         ctx->ht.enabled = conf_is_ht(conf);
3924                         if (ctx->ht.enabled) {
3925                                 if (conf_is_ht40_minus(conf)) {
3926                                         ctx->ht.extension_chan_offset =
3927                                                 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3928                                         ctx->ht.is_40mhz = true;
3929                                 } else if (conf_is_ht40_plus(conf)) {
3930                                         ctx->ht.extension_chan_offset =
3931                                                 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3932                                         ctx->ht.is_40mhz = true;
3933                                 } else {
3934                                         ctx->ht.extension_chan_offset =
3935                                                 IEEE80211_HT_PARAM_CHA_SEC_NONE;
3936                                         ctx->ht.is_40mhz = false;
3937                                 }
3938                         } else
3939                                 ctx->ht.is_40mhz = false;
3940
3941                         if ((le16_to_cpu(ctx->staging.channel) != ch))
3942                                 ctx->staging.flags = 0;
3943
3944                         iwl_set_rxon_channel(priv, channel, ctx);
3945                         iwl_set_rxon_ht(priv, ht_conf);
3946                         iwl_set_flags_for_band(priv, ctx, channel->band,
3947                                                ctx->vif);
3948                         spin_unlock_irqrestore(&priv->lock, flags);
3949
3950                         iwl_set_rate(priv);
3951                         /*
3952                          * at this point, staging_rxon has the
3953                          * configuration for channel switch
3954                          */
3955                         if (priv->cfg->ops->lib->set_channel_switch(priv,
3956                                                                     ch_switch))
3957                                 priv->switch_rxon.switch_in_progress = false;
3958                 }
3959         }
3960 out:
3961         mutex_unlock(&priv->mutex);
3962 out_exit:
3963         if (!priv->switch_rxon.switch_in_progress)
3964                 ieee80211_chswitch_done(ctx->vif, false);
3965         IWL_DEBUG_MAC80211(priv, "leave\n");
3966 }
3967
3968 static void iwlagn_configure_filter(struct ieee80211_hw *hw,
3969                                     unsigned int changed_flags,
3970                                     unsigned int *total_flags,
3971                                     u64 multicast)
3972 {
3973         struct iwl_priv *priv = hw->priv;
3974         __le32 filter_or = 0, filter_nand = 0;
3975         struct iwl_rxon_context *ctx;
3976
3977 #define CHK(test, flag) do { \
3978         if (*total_flags & (test))              \
3979                 filter_or |= (flag);            \
3980         else                                    \
3981                 filter_nand |= (flag);          \
3982         } while (0)
3983
3984         IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
3985                         changed_flags, *total_flags);
3986
3987         CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
3988         CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK);
3989         CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
3990
3991 #undef CHK
3992
3993         mutex_lock(&priv->mutex);
3994
3995         for_each_context(priv, ctx) {
3996                 ctx->staging.filter_flags &= ~filter_nand;
3997                 ctx->staging.filter_flags |= filter_or;
3998                 iwlcore_commit_rxon(priv, ctx);
3999         }
4000
4001         mutex_unlock(&priv->mutex);
4002
4003         /*
4004          * Receiving all multicast frames is always enabled by the
4005          * default flags setup in iwl_connection_init_rx_config()
4006          * since we currently do not support programming multicast
4007          * filters into the device.
4008          */
4009         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
4010                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
4011 }
4012
4013 static void iwl_mac_flush(struct ieee80211_hw *hw, bool drop)
4014 {
4015         struct iwl_priv *priv = hw->priv;
4016
4017         mutex_lock(&priv->mutex);
4018         IWL_DEBUG_MAC80211(priv, "enter\n");
4019
4020         /* do not support "flush" */
4021         if (!priv->cfg->ops->lib->txfifo_flush)
4022                 goto done;
4023
4024         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4025                 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
4026                 goto done;
4027         }
4028         if (iwl_is_rfkill(priv)) {
4029                 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
4030                 goto done;
4031         }
4032
4033         /*
4034          * mac80211 will not push any more frames for transmit
4035          * until the flush is completed
4036          */
4037         if (drop) {
4038                 IWL_DEBUG_MAC80211(priv, "send flush command\n");
4039                 if (priv->cfg->ops->lib->txfifo_flush(priv, IWL_DROP_ALL)) {
4040                         IWL_ERR(priv, "flush request fail\n");
4041                         goto done;
4042                 }
4043         }
4044         IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
4045         iwlagn_wait_tx_queue_empty(priv);
4046 done:
4047         mutex_unlock(&priv->mutex);
4048         IWL_DEBUG_MAC80211(priv, "leave\n");
4049 }
4050
4051 /*****************************************************************************
4052  *
4053  * driver setup and teardown
4054  *
4055  *****************************************************************************/
4056
4057 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4058 {
4059         priv->workqueue = create_singlethread_workqueue(DRV_NAME);
4060
4061         init_waitqueue_head(&priv->wait_command_queue);
4062
4063         INIT_WORK(&priv->restart, iwl_bg_restart);
4064         INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
4065         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
4066         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4067         INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
4068         INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
4069         INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
4070         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4071         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4072
4073         iwl_setup_scan_deferred_work(priv);
4074
4075         if (priv->cfg->ops->lib->setup_deferred_work)
4076                 priv->cfg->ops->lib->setup_deferred_work(priv);
4077
4078         init_timer(&priv->statistics_periodic);
4079         priv->statistics_periodic.data = (unsigned long)priv;
4080         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
4081
4082         init_timer(&priv->ucode_trace);
4083         priv->ucode_trace.data = (unsigned long)priv;
4084         priv->ucode_trace.function = iwl_bg_ucode_trace;
4085
4086         if (priv->cfg->ops->lib->recover_from_tx_stall) {
4087                 init_timer(&priv->monitor_recover);
4088                 priv->monitor_recover.data = (unsigned long)priv;
4089                 priv->monitor_recover.function =
4090                         priv->cfg->ops->lib->recover_from_tx_stall;
4091         }
4092
4093         if (!priv->cfg->base_params->use_isr_legacy)
4094                 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4095                         iwl_irq_tasklet, (unsigned long)priv);
4096         else
4097                 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4098                         iwl_irq_tasklet_legacy, (unsigned long)priv);
4099 }
4100
4101 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4102 {
4103         if (priv->cfg->ops->lib->cancel_deferred_work)
4104                 priv->cfg->ops->lib->cancel_deferred_work(priv);
4105
4106         cancel_delayed_work_sync(&priv->init_alive_start);
4107         cancel_delayed_work(&priv->alive_start);
4108         cancel_work_sync(&priv->run_time_calib_work);
4109         cancel_work_sync(&priv->beacon_update);
4110
4111         iwl_cancel_scan_deferred_work(priv);
4112
4113         cancel_work_sync(&priv->bt_full_concurrency);
4114         cancel_work_sync(&priv->bt_runtime_config);
4115
4116         del_timer_sync(&priv->statistics_periodic);
4117         del_timer_sync(&priv->ucode_trace);
4118 }
4119
4120 static void iwl_init_hw_rates(struct iwl_priv *priv,
4121                               struct ieee80211_rate *rates)
4122 {
4123         int i;
4124
4125         for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
4126                 rates[i].bitrate = iwl_rates[i].ieee * 5;
4127                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
4128                 rates[i].hw_value_short = i;
4129                 rates[i].flags = 0;
4130                 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
4131                         /*
4132                          * If CCK != 1M then set short preamble rate flag.
4133                          */
4134                         rates[i].flags |=
4135                                 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
4136                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
4137                 }
4138         }
4139 }
4140
4141 static int iwl_init_drv(struct iwl_priv *priv)
4142 {
4143         int ret;
4144
4145         priv->ibss_beacon = NULL;
4146
4147         spin_lock_init(&priv->sta_lock);
4148         spin_lock_init(&priv->hcmd_lock);
4149
4150         INIT_LIST_HEAD(&priv->free_frames);
4151
4152         mutex_init(&priv->mutex);
4153         mutex_init(&priv->sync_cmd_mutex);
4154
4155         priv->ieee_channels = NULL;
4156         priv->ieee_rates = NULL;
4157         priv->band = IEEE80211_BAND_2GHZ;
4158
4159         priv->iw_mode = NL80211_IFTYPE_STATION;
4160         priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
4161         priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
4162         priv->_agn.agg_tids_count = 0;
4163
4164         /* initialize force reset */
4165         priv->force_reset[IWL_RF_RESET].reset_duration =
4166                 IWL_DELAY_NEXT_FORCE_RF_RESET;
4167         priv->force_reset[IWL_FW_RESET].reset_duration =
4168                 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
4169
4170         /* Choose which receivers/antennas to use */
4171         if (priv->cfg->ops->hcmd->set_rxon_chain)
4172                 priv->cfg->ops->hcmd->set_rxon_chain(priv,
4173                                         &priv->contexts[IWL_RXON_CTX_BSS]);
4174
4175         iwl_init_scan_params(priv);
4176
4177         /* init bt coex */
4178         if (priv->cfg->bt_params &&
4179             priv->cfg->bt_params->advanced_bt_coexist) {
4180                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
4181                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
4182                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
4183                 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
4184                 priv->bt_duration = BT_DURATION_LIMIT_DEF;
4185                 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
4186                 priv->dynamic_agg_thresh = BT_AGG_THRESHOLD_DEF;
4187         }
4188
4189         /* Set the tx_power_user_lmt to the lowest power level
4190          * this value will get overwritten by channel max power avg
4191          * from eeprom */
4192         priv->tx_power_user_lmt = IWLAGN_TX_POWER_TARGET_POWER_MIN;
4193
4194         ret = iwl_init_channel_map(priv);
4195         if (ret) {
4196                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
4197                 goto err;
4198         }
4199
4200         ret = iwlcore_init_geos(priv);
4201         if (ret) {
4202                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
4203                 goto err_free_channel_map;
4204         }
4205         iwl_init_hw_rates(priv, priv->ieee_rates);
4206
4207         return 0;
4208
4209 err_free_channel_map:
4210         iwl_free_channel_map(priv);
4211 err:
4212         return ret;
4213 }
4214
4215 static void iwl_uninit_drv(struct iwl_priv *priv)
4216 {
4217         iwl_calib_free_results(priv);
4218         iwlcore_free_geos(priv);
4219         iwl_free_channel_map(priv);
4220         kfree(priv->scan_cmd);
4221 }
4222
4223 static struct ieee80211_ops iwl_hw_ops = {
4224         .tx = iwl_mac_tx,
4225         .start = iwl_mac_start,
4226         .stop = iwl_mac_stop,
4227         .add_interface = iwl_mac_add_interface,
4228         .remove_interface = iwl_mac_remove_interface,
4229         .config = iwl_mac_config,
4230         .configure_filter = iwlagn_configure_filter,
4231         .set_key = iwl_mac_set_key,
4232         .update_tkip_key = iwl_mac_update_tkip_key,
4233         .conf_tx = iwl_mac_conf_tx,
4234         .reset_tsf = iwl_mac_reset_tsf,
4235         .bss_info_changed = iwl_bss_info_changed,
4236         .ampdu_action = iwl_mac_ampdu_action,
4237         .hw_scan = iwl_mac_hw_scan,
4238         .sta_notify = iwl_mac_sta_notify,
4239         .sta_add = iwlagn_mac_sta_add,
4240         .sta_remove = iwl_mac_sta_remove,
4241         .channel_switch = iwl_mac_channel_switch,
4242         .flush = iwl_mac_flush,
4243         .tx_last_beacon = iwl_mac_tx_last_beacon,
4244 };
4245
4246 static void iwl_hw_detect(struct iwl_priv *priv)
4247 {
4248         priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
4249         priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
4250         pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
4251         IWL_DEBUG_INFO(priv, "HW Revision ID = 0x%X\n", priv->rev_id);
4252 }
4253
4254 static int iwl_set_hw_params(struct iwl_priv *priv)
4255 {
4256         priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
4257         priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
4258         if (priv->cfg->mod_params->amsdu_size_8K)
4259                 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_8K);
4260         else
4261                 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_4K);
4262
4263         priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
4264
4265         if (priv->cfg->mod_params->disable_11n)
4266                 priv->cfg->sku &= ~IWL_SKU_N;
4267
4268         /* Device-specific setup */
4269         return priv->cfg->ops->lib->set_hw_params(priv);
4270 }
4271
4272 static const u8 iwlagn_bss_ac_to_fifo[] = {
4273         IWL_TX_FIFO_VO,
4274         IWL_TX_FIFO_VI,
4275         IWL_TX_FIFO_BE,
4276         IWL_TX_FIFO_BK,
4277 };
4278
4279 static const u8 iwlagn_bss_ac_to_queue[] = {
4280         0, 1, 2, 3,
4281 };
4282
4283 static const u8 iwlagn_pan_ac_to_fifo[] = {
4284         IWL_TX_FIFO_VO_IPAN,
4285         IWL_TX_FIFO_VI_IPAN,
4286         IWL_TX_FIFO_BE_IPAN,
4287         IWL_TX_FIFO_BK_IPAN,
4288 };
4289
4290 static const u8 iwlagn_pan_ac_to_queue[] = {
4291         7, 6, 5, 4,
4292 };
4293
4294 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4295 {
4296         int err = 0, i;
4297         struct iwl_priv *priv;
4298         struct ieee80211_hw *hw;
4299         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4300         unsigned long flags;
4301         u16 pci_cmd, num_mac;
4302
4303         /************************
4304          * 1. Allocating HW data
4305          ************************/
4306
4307         /* Disabling hardware scan means that mac80211 will perform scans
4308          * "the hard way", rather than using device's scan. */
4309         if (cfg->mod_params->disable_hw_scan) {
4310                 dev_printk(KERN_DEBUG, &(pdev->dev),
4311                         "sw scan support is deprecated\n");
4312                 iwl_hw_ops.hw_scan = NULL;
4313         }
4314
4315         hw = iwl_alloc_all(cfg, &iwl_hw_ops);
4316         if (!hw) {
4317                 err = -ENOMEM;
4318                 goto out;
4319         }
4320         priv = hw->priv;
4321         /* At this point both hw and priv are allocated. */
4322
4323         /*
4324          * The default context is always valid,
4325          * more may be discovered when firmware
4326          * is loaded.
4327          */
4328         priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
4329
4330         for (i = 0; i < NUM_IWL_RXON_CTX; i++)
4331                 priv->contexts[i].ctxid = i;
4332
4333         priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
4334         priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
4335         priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
4336         priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
4337         priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
4338         priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
4339         priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
4340         priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
4341         priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo = iwlagn_bss_ac_to_fifo;
4342         priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue = iwlagn_bss_ac_to_queue;
4343         priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
4344                 BIT(NL80211_IFTYPE_ADHOC);
4345         priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
4346                 BIT(NL80211_IFTYPE_STATION);
4347         priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
4348         priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
4349         priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
4350
4351         priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
4352         priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd = REPLY_WIPAN_RXON_TIMING;
4353         priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd = REPLY_WIPAN_RXON_ASSOC;
4354         priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
4355         priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
4356         priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
4357         priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
4358         priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
4359         priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo = iwlagn_pan_ac_to_fifo;
4360         priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue = iwlagn_pan_ac_to_queue;
4361         priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
4362         priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
4363                 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
4364         priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
4365         priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
4366         priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
4367
4368         BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
4369
4370         SET_IEEE80211_DEV(hw, &pdev->dev);
4371
4372         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
4373         priv->cfg = cfg;
4374         priv->pci_dev = pdev;
4375         priv->inta_mask = CSR_INI_SET_MASK;
4376
4377         /* is antenna coupling more than 35dB ? */
4378         priv->bt_ant_couple_ok =
4379                 (iwlagn_ant_coupling > IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
4380                 true : false;
4381
4382         /* enable/disable bt channel announcement */
4383         priv->bt_ch_announce = iwlagn_bt_ch_announce;
4384
4385         if (iwl_alloc_traffic_mem(priv))
4386                 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
4387
4388         /**************************
4389          * 2. Initializing PCI bus
4390          **************************/
4391         pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 |
4392                                 PCIE_LINK_STATE_CLKPM);
4393
4394         if (pci_enable_device(pdev)) {
4395                 err = -ENODEV;
4396                 goto out_ieee80211_free_hw;
4397         }
4398
4399         pci_set_master(pdev);
4400
4401         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
4402         if (!err)
4403                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
4404         if (err) {
4405                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4406                 if (!err)
4407                         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
4408                 /* both attempts failed: */
4409                 if (err) {
4410                         IWL_WARN(priv, "No suitable DMA available.\n");
4411                         goto out_pci_disable_device;
4412                 }
4413         }
4414
4415         err = pci_request_regions(pdev, DRV_NAME);
4416         if (err)
4417                 goto out_pci_disable_device;
4418
4419         pci_set_drvdata(pdev, priv);
4420
4421
4422         /***********************
4423          * 3. Read REV register
4424          ***********************/
4425         priv->hw_base = pci_iomap(pdev, 0, 0);
4426         if (!priv->hw_base) {
4427                 err = -ENODEV;
4428                 goto out_pci_release_regions;
4429         }
4430
4431         IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
4432                 (unsigned long long) pci_resource_len(pdev, 0));
4433         IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
4434
4435         /* these spin locks will be used in apm_ops.init and EEPROM access
4436          * we should init now
4437          */
4438         spin_lock_init(&priv->reg_lock);
4439         spin_lock_init(&priv->lock);
4440
4441         /*
4442          * stop and reset the on-board processor just in case it is in a
4443          * strange state ... like being left stranded by a primary kernel
4444          * and this is now the kdump kernel trying to start up
4445          */
4446         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
4447
4448         iwl_hw_detect(priv);
4449         IWL_INFO(priv, "Detected %s, REV=0x%X\n",
4450                 priv->cfg->name, priv->hw_rev);
4451
4452         /* We disable the RETRY_TIMEOUT register (0x41) to keep
4453          * PCI Tx retries from interfering with C3 CPU state */
4454         pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
4455
4456         iwl_prepare_card_hw(priv);
4457         if (!priv->hw_ready) {
4458                 IWL_WARN(priv, "Failed, HW not ready\n");
4459                 goto out_iounmap;
4460         }
4461
4462         /*****************
4463          * 4. Read EEPROM
4464          *****************/
4465         /* Read the EEPROM */
4466         err = iwl_eeprom_init(priv);
4467         if (err) {
4468                 IWL_ERR(priv, "Unable to init EEPROM\n");
4469                 goto out_iounmap;
4470         }
4471         err = iwl_eeprom_check_version(priv);
4472         if (err)
4473                 goto out_free_eeprom;
4474
4475         /* extract MAC Address */
4476         iwl_eeprom_get_mac(priv, priv->addresses[0].addr);
4477         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
4478         priv->hw->wiphy->addresses = priv->addresses;
4479         priv->hw->wiphy->n_addresses = 1;
4480         num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS);
4481         if (num_mac > 1) {
4482                 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
4483                        ETH_ALEN);
4484                 priv->addresses[1].addr[5]++;
4485                 priv->hw->wiphy->n_addresses++;
4486         }
4487
4488         /************************
4489          * 5. Setup HW constants
4490          ************************/
4491         if (iwl_set_hw_params(priv)) {
4492                 IWL_ERR(priv, "failed to set hw parameters\n");
4493                 goto out_free_eeprom;
4494         }
4495
4496         /*******************
4497          * 6. Setup priv
4498          *******************/
4499
4500         err = iwl_init_drv(priv);
4501         if (err)
4502                 goto out_free_eeprom;
4503         /* At this point both hw and priv are initialized. */
4504
4505         /********************
4506          * 7. Setup services
4507          ********************/
4508         spin_lock_irqsave(&priv->lock, flags);
4509         iwl_disable_interrupts(priv);
4510         spin_unlock_irqrestore(&priv->lock, flags);
4511
4512         pci_enable_msi(priv->pci_dev);
4513
4514         iwl_alloc_isr_ict(priv);
4515         err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr,
4516                           IRQF_SHARED, DRV_NAME, priv);
4517         if (err) {
4518                 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
4519                 goto out_disable_msi;
4520         }
4521
4522         iwl_setup_deferred_work(priv);
4523         iwl_setup_rx_handlers(priv);
4524
4525         /*********************************************
4526          * 8. Enable interrupts and read RFKILL state
4527          *********************************************/
4528
4529         /* enable interrupts if needed: hw bug w/a */
4530         pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
4531         if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
4532                 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
4533                 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
4534         }
4535
4536         iwl_enable_interrupts(priv);
4537
4538         /* If platform's RF_KILL switch is NOT set to KILL */
4539         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
4540                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4541         else
4542                 set_bit(STATUS_RF_KILL_HW, &priv->status);
4543
4544         wiphy_rfkill_set_hw_state(priv->hw->wiphy,
4545                 test_bit(STATUS_RF_KILL_HW, &priv->status));
4546
4547         iwl_power_initialize(priv);
4548         iwl_tt_initialize(priv);
4549
4550         init_completion(&priv->_agn.firmware_loading_complete);
4551
4552         err = iwl_request_firmware(priv, true);
4553         if (err)
4554                 goto out_destroy_workqueue;
4555
4556         return 0;
4557
4558  out_destroy_workqueue:
4559         destroy_workqueue(priv->workqueue);
4560         priv->workqueue = NULL;
4561         free_irq(priv->pci_dev->irq, priv);
4562         iwl_free_isr_ict(priv);
4563  out_disable_msi:
4564         pci_disable_msi(priv->pci_dev);
4565         iwl_uninit_drv(priv);
4566  out_free_eeprom:
4567         iwl_eeprom_free(priv);
4568  out_iounmap:
4569         pci_iounmap(pdev, priv->hw_base);
4570  out_pci_release_regions:
4571         pci_set_drvdata(pdev, NULL);
4572         pci_release_regions(pdev);
4573  out_pci_disable_device:
4574         pci_disable_device(pdev);
4575  out_ieee80211_free_hw:
4576         iwl_free_traffic_mem(priv);
4577         ieee80211_free_hw(priv->hw);
4578  out:
4579         return err;
4580 }
4581
4582 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
4583 {
4584         struct iwl_priv *priv = pci_get_drvdata(pdev);
4585         unsigned long flags;
4586
4587         if (!priv)
4588                 return;
4589
4590         wait_for_completion(&priv->_agn.firmware_loading_complete);
4591
4592         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
4593
4594         iwl_dbgfs_unregister(priv);
4595         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
4596
4597         /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
4598          * to be called and iwl_down since we are removing the device
4599          * we need to set STATUS_EXIT_PENDING bit.
4600          */
4601         set_bit(STATUS_EXIT_PENDING, &priv->status);
4602         if (priv->mac80211_registered) {
4603                 ieee80211_unregister_hw(priv->hw);
4604                 priv->mac80211_registered = 0;
4605         } else {
4606                 iwl_down(priv);
4607         }
4608
4609         /*
4610          * Make sure device is reset to low power before unloading driver.
4611          * This may be redundant with iwl_down(), but there are paths to
4612          * run iwl_down() without calling apm_ops.stop(), and there are
4613          * paths to avoid running iwl_down() at all before leaving driver.
4614          * This (inexpensive) call *makes sure* device is reset.
4615          */
4616         priv->cfg->ops->lib->apm_ops.stop(priv);
4617
4618         iwl_tt_exit(priv);
4619
4620         /* make sure we flush any pending irq or
4621          * tasklet for the driver
4622          */
4623         spin_lock_irqsave(&priv->lock, flags);
4624         iwl_disable_interrupts(priv);
4625         spin_unlock_irqrestore(&priv->lock, flags);
4626
4627         iwl_synchronize_irq(priv);
4628
4629         iwl_dealloc_ucode_pci(priv);
4630
4631         if (priv->rxq.bd)
4632                 iwlagn_rx_queue_free(priv, &priv->rxq);
4633         iwlagn_hw_txq_ctx_free(priv);
4634
4635         iwl_eeprom_free(priv);
4636
4637
4638         /*netif_stop_queue(dev); */
4639         flush_workqueue(priv->workqueue);
4640
4641         /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
4642          * priv->workqueue... so we can't take down the workqueue
4643          * until now... */
4644         destroy_workqueue(priv->workqueue);
4645         priv->workqueue = NULL;
4646         iwl_free_traffic_mem(priv);
4647
4648         free_irq(priv->pci_dev->irq, priv);
4649         pci_disable_msi(priv->pci_dev);
4650         pci_iounmap(pdev, priv->hw_base);
4651         pci_release_regions(pdev);
4652         pci_disable_device(pdev);
4653         pci_set_drvdata(pdev, NULL);
4654
4655         iwl_uninit_drv(priv);
4656
4657         iwl_free_isr_ict(priv);
4658
4659         if (priv->ibss_beacon)
4660                 dev_kfree_skb(priv->ibss_beacon);
4661
4662         ieee80211_free_hw(priv->hw);
4663 }
4664
4665
4666 /*****************************************************************************
4667  *
4668  * driver and module entry point
4669  *
4670  *****************************************************************************/
4671
4672 /* Hardware specific file defines the PCI IDs table for that hardware module */
4673 static DEFINE_PCI_DEVICE_TABLE(iwl_hw_card_ids) = {
4674 #ifdef CONFIG_IWL4965
4675         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4676         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4677 #endif /* CONFIG_IWL4965 */
4678 #ifdef CONFIG_IWL5000
4679 /* 5100 Series WiFi */
4680         {IWL_PCI_DEVICE(0x4232, 0x1201, iwl5100_agn_cfg)}, /* Mini Card */
4681         {IWL_PCI_DEVICE(0x4232, 0x1301, iwl5100_agn_cfg)}, /* Half Mini Card */
4682         {IWL_PCI_DEVICE(0x4232, 0x1204, iwl5100_agn_cfg)}, /* Mini Card */
4683         {IWL_PCI_DEVICE(0x4232, 0x1304, iwl5100_agn_cfg)}, /* Half Mini Card */
4684         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bgn_cfg)}, /* Mini Card */
4685         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bgn_cfg)}, /* Half Mini Card */
4686         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)}, /* Mini Card */
4687         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)}, /* Half Mini Card */
4688         {IWL_PCI_DEVICE(0x4232, 0x1221, iwl5100_agn_cfg)}, /* Mini Card */
4689         {IWL_PCI_DEVICE(0x4232, 0x1321, iwl5100_agn_cfg)}, /* Half Mini Card */
4690         {IWL_PCI_DEVICE(0x4232, 0x1224, iwl5100_agn_cfg)}, /* Mini Card */
4691         {IWL_PCI_DEVICE(0x4232, 0x1324, iwl5100_agn_cfg)}, /* Half Mini Card */
4692         {IWL_PCI_DEVICE(0x4232, 0x1225, iwl5100_bgn_cfg)}, /* Mini Card */
4693         {IWL_PCI_DEVICE(0x4232, 0x1325, iwl5100_bgn_cfg)}, /* Half Mini Card */
4694         {IWL_PCI_DEVICE(0x4232, 0x1226, iwl5100_abg_cfg)}, /* Mini Card */
4695         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)}, /* Half Mini Card */
4696         {IWL_PCI_DEVICE(0x4237, 0x1211, iwl5100_agn_cfg)}, /* Mini Card */
4697         {IWL_PCI_DEVICE(0x4237, 0x1311, iwl5100_agn_cfg)}, /* Half Mini Card */
4698         {IWL_PCI_DEVICE(0x4237, 0x1214, iwl5100_agn_cfg)}, /* Mini Card */
4699         {IWL_PCI_DEVICE(0x4237, 0x1314, iwl5100_agn_cfg)}, /* Half Mini Card */
4700         {IWL_PCI_DEVICE(0x4237, 0x1215, iwl5100_bgn_cfg)}, /* Mini Card */
4701         {IWL_PCI_DEVICE(0x4237, 0x1315, iwl5100_bgn_cfg)}, /* Half Mini Card */
4702         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)}, /* Mini Card */
4703         {IWL_PCI_DEVICE(0x4237, 0x1316, iwl5100_abg_cfg)}, /* Half Mini Card */
4704
4705 /* 5300 Series WiFi */
4706         {IWL_PCI_DEVICE(0x4235, 0x1021, iwl5300_agn_cfg)}, /* Mini Card */
4707         {IWL_PCI_DEVICE(0x4235, 0x1121, iwl5300_agn_cfg)}, /* Half Mini Card */
4708         {IWL_PCI_DEVICE(0x4235, 0x1024, iwl5300_agn_cfg)}, /* Mini Card */
4709         {IWL_PCI_DEVICE(0x4235, 0x1124, iwl5300_agn_cfg)}, /* Half Mini Card */
4710         {IWL_PCI_DEVICE(0x4235, 0x1001, iwl5300_agn_cfg)}, /* Mini Card */
4711         {IWL_PCI_DEVICE(0x4235, 0x1101, iwl5300_agn_cfg)}, /* Half Mini Card */
4712         {IWL_PCI_DEVICE(0x4235, 0x1004, iwl5300_agn_cfg)}, /* Mini Card */
4713         {IWL_PCI_DEVICE(0x4235, 0x1104, iwl5300_agn_cfg)}, /* Half Mini Card */
4714         {IWL_PCI_DEVICE(0x4236, 0x1011, iwl5300_agn_cfg)}, /* Mini Card */
4715         {IWL_PCI_DEVICE(0x4236, 0x1111, iwl5300_agn_cfg)}, /* Half Mini Card */
4716         {IWL_PCI_DEVICE(0x4236, 0x1014, iwl5300_agn_cfg)}, /* Mini Card */
4717         {IWL_PCI_DEVICE(0x4236, 0x1114, iwl5300_agn_cfg)}, /* Half Mini Card */
4718
4719 /* 5350 Series WiFi/WiMax */
4720         {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)}, /* Mini Card */
4721         {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)}, /* Mini Card */
4722         {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)}, /* Mini Card */
4723
4724 /* 5150 Series Wifi/WiMax */
4725         {IWL_PCI_DEVICE(0x423C, 0x1201, iwl5150_agn_cfg)}, /* Mini Card */
4726         {IWL_PCI_DEVICE(0x423C, 0x1301, iwl5150_agn_cfg)}, /* Half Mini Card */
4727         {IWL_PCI_DEVICE(0x423C, 0x1206, iwl5150_abg_cfg)}, /* Mini Card */
4728         {IWL_PCI_DEVICE(0x423C, 0x1306, iwl5150_abg_cfg)}, /* Half Mini Card */
4729         {IWL_PCI_DEVICE(0x423C, 0x1221, iwl5150_agn_cfg)}, /* Mini Card */
4730         {IWL_PCI_DEVICE(0x423C, 0x1321, iwl5150_agn_cfg)}, /* Half Mini Card */
4731
4732         {IWL_PCI_DEVICE(0x423D, 0x1211, iwl5150_agn_cfg)}, /* Mini Card */
4733         {IWL_PCI_DEVICE(0x423D, 0x1311, iwl5150_agn_cfg)}, /* Half Mini Card */
4734         {IWL_PCI_DEVICE(0x423D, 0x1216, iwl5150_abg_cfg)}, /* Mini Card */
4735         {IWL_PCI_DEVICE(0x423D, 0x1316, iwl5150_abg_cfg)}, /* Half Mini Card */
4736
4737 /* 6x00 Series */
4738         {IWL_PCI_DEVICE(0x422B, 0x1101, iwl6000_3agn_cfg)},
4739         {IWL_PCI_DEVICE(0x422B, 0x1121, iwl6000_3agn_cfg)},
4740         {IWL_PCI_DEVICE(0x422C, 0x1301, iwl6000i_2agn_cfg)},
4741         {IWL_PCI_DEVICE(0x422C, 0x1306, iwl6000i_2abg_cfg)},
4742         {IWL_PCI_DEVICE(0x422C, 0x1307, iwl6000i_2bg_cfg)},
4743         {IWL_PCI_DEVICE(0x422C, 0x1321, iwl6000i_2agn_cfg)},
4744         {IWL_PCI_DEVICE(0x422C, 0x1326, iwl6000i_2abg_cfg)},
4745         {IWL_PCI_DEVICE(0x4238, 0x1111, iwl6000_3agn_cfg)},
4746         {IWL_PCI_DEVICE(0x4239, 0x1311, iwl6000i_2agn_cfg)},
4747         {IWL_PCI_DEVICE(0x4239, 0x1316, iwl6000i_2abg_cfg)},
4748
4749 /* 6x00 Series Gen2a */
4750         {IWL_PCI_DEVICE(0x0082, 0x1201, iwl6000g2a_2agn_cfg)},
4751         {IWL_PCI_DEVICE(0x0085, 0x1211, iwl6000g2a_2agn_cfg)},
4752         {IWL_PCI_DEVICE(0x0082, 0x1221, iwl6000g2a_2agn_cfg)},
4753         {IWL_PCI_DEVICE(0x0082, 0x1206, iwl6000g2a_2abg_cfg)},
4754         {IWL_PCI_DEVICE(0x0085, 0x1216, iwl6000g2a_2abg_cfg)},
4755         {IWL_PCI_DEVICE(0x0082, 0x1226, iwl6000g2a_2abg_cfg)},
4756         {IWL_PCI_DEVICE(0x0082, 0x1207, iwl6000g2a_2bg_cfg)},
4757         {IWL_PCI_DEVICE(0x0082, 0x1301, iwl6000g2a_2agn_cfg)},
4758         {IWL_PCI_DEVICE(0x0082, 0x1306, iwl6000g2a_2abg_cfg)},
4759         {IWL_PCI_DEVICE(0x0082, 0x1307, iwl6000g2a_2bg_cfg)},
4760         {IWL_PCI_DEVICE(0x0082, 0x1321, iwl6000g2a_2agn_cfg)},
4761         {IWL_PCI_DEVICE(0x0082, 0x1326, iwl6000g2a_2abg_cfg)},
4762         {IWL_PCI_DEVICE(0x0085, 0x1311, iwl6000g2a_2agn_cfg)},
4763         {IWL_PCI_DEVICE(0x0085, 0x1316, iwl6000g2a_2abg_cfg)},
4764
4765 /* 6x00 Series Gen2b */
4766         {IWL_PCI_DEVICE(0x008F, 0x5105, iwl6000g2b_bgn_cfg)},
4767         {IWL_PCI_DEVICE(0x0090, 0x5115, iwl6000g2b_bgn_cfg)},
4768         {IWL_PCI_DEVICE(0x008F, 0x5125, iwl6000g2b_bgn_cfg)},
4769         {IWL_PCI_DEVICE(0x008F, 0x5107, iwl6000g2b_bg_cfg)},
4770         {IWL_PCI_DEVICE(0x008F, 0x5201, iwl6000g2b_2agn_cfg)},
4771         {IWL_PCI_DEVICE(0x0090, 0x5211, iwl6000g2b_2agn_cfg)},
4772         {IWL_PCI_DEVICE(0x008F, 0x5221, iwl6000g2b_2agn_cfg)},
4773         {IWL_PCI_DEVICE(0x008F, 0x5206, iwl6000g2b_2abg_cfg)},
4774         {IWL_PCI_DEVICE(0x0090, 0x5216, iwl6000g2b_2abg_cfg)},
4775         {IWL_PCI_DEVICE(0x008F, 0x5226, iwl6000g2b_2abg_cfg)},
4776         {IWL_PCI_DEVICE(0x008F, 0x5207, iwl6000g2b_2bg_cfg)},
4777         {IWL_PCI_DEVICE(0x008A, 0x5301, iwl6000g2b_bgn_cfg)},
4778         {IWL_PCI_DEVICE(0x008A, 0x5305, iwl6000g2b_bgn_cfg)},
4779         {IWL_PCI_DEVICE(0x008A, 0x5307, iwl6000g2b_bg_cfg)},
4780         {IWL_PCI_DEVICE(0x008A, 0x5321, iwl6000g2b_bgn_cfg)},
4781         {IWL_PCI_DEVICE(0x008A, 0x5325, iwl6000g2b_bgn_cfg)},
4782         {IWL_PCI_DEVICE(0x008B, 0x5311, iwl6000g2b_bgn_cfg)},
4783         {IWL_PCI_DEVICE(0x008B, 0x5315, iwl6000g2b_bgn_cfg)},
4784         {IWL_PCI_DEVICE(0x0090, 0x5211, iwl6000g2b_2agn_cfg)},
4785         {IWL_PCI_DEVICE(0x0090, 0x5215, iwl6000g2b_2bgn_cfg)},
4786         {IWL_PCI_DEVICE(0x0090, 0x5216, iwl6000g2b_2abg_cfg)},
4787         {IWL_PCI_DEVICE(0x0091, 0x5201, iwl6000g2b_2agn_cfg)},
4788         {IWL_PCI_DEVICE(0x0091, 0x5205, iwl6000g2b_2bgn_cfg)},
4789         {IWL_PCI_DEVICE(0x0091, 0x5206, iwl6000g2b_2abg_cfg)},
4790         {IWL_PCI_DEVICE(0x0091, 0x5207, iwl6000g2b_2bg_cfg)},
4791         {IWL_PCI_DEVICE(0x0091, 0x5221, iwl6000g2b_2agn_cfg)},
4792         {IWL_PCI_DEVICE(0x0091, 0x5225, iwl6000g2b_2bgn_cfg)},
4793         {IWL_PCI_DEVICE(0x0091, 0x5226, iwl6000g2b_2abg_cfg)},
4794
4795 /* 6x50 WiFi/WiMax Series */
4796         {IWL_PCI_DEVICE(0x0087, 0x1301, iwl6050_2agn_cfg)},
4797         {IWL_PCI_DEVICE(0x0087, 0x1306, iwl6050_2abg_cfg)},
4798         {IWL_PCI_DEVICE(0x0087, 0x1321, iwl6050_2agn_cfg)},
4799         {IWL_PCI_DEVICE(0x0087, 0x1326, iwl6050_2abg_cfg)},
4800         {IWL_PCI_DEVICE(0x0089, 0x1311, iwl6050_2agn_cfg)},
4801         {IWL_PCI_DEVICE(0x0089, 0x1316, iwl6050_2abg_cfg)},
4802
4803 /* 6x50 WiFi/WiMax Series Gen2 */
4804         {IWL_PCI_DEVICE(0x0885, 0x1305, iwl6050g2_bgn_cfg)},
4805         {IWL_PCI_DEVICE(0x0885, 0x1306, iwl6050g2_bgn_cfg)},
4806         {IWL_PCI_DEVICE(0x0885, 0x1325, iwl6050g2_bgn_cfg)},
4807         {IWL_PCI_DEVICE(0x0885, 0x1326, iwl6050g2_bgn_cfg)},
4808         {IWL_PCI_DEVICE(0x0886, 0x1315, iwl6050g2_bgn_cfg)},
4809         {IWL_PCI_DEVICE(0x0886, 0x1316, iwl6050g2_bgn_cfg)},
4810
4811 /* 1000 Series WiFi */
4812         {IWL_PCI_DEVICE(0x0083, 0x1205, iwl1000_bgn_cfg)},
4813         {IWL_PCI_DEVICE(0x0083, 0x1305, iwl1000_bgn_cfg)},
4814         {IWL_PCI_DEVICE(0x0083, 0x1225, iwl1000_bgn_cfg)},
4815         {IWL_PCI_DEVICE(0x0083, 0x1325, iwl1000_bgn_cfg)},
4816         {IWL_PCI_DEVICE(0x0084, 0x1215, iwl1000_bgn_cfg)},
4817         {IWL_PCI_DEVICE(0x0084, 0x1315, iwl1000_bgn_cfg)},
4818         {IWL_PCI_DEVICE(0x0083, 0x1206, iwl1000_bg_cfg)},
4819         {IWL_PCI_DEVICE(0x0083, 0x1306, iwl1000_bg_cfg)},
4820         {IWL_PCI_DEVICE(0x0083, 0x1226, iwl1000_bg_cfg)},
4821         {IWL_PCI_DEVICE(0x0083, 0x1326, iwl1000_bg_cfg)},
4822         {IWL_PCI_DEVICE(0x0084, 0x1216, iwl1000_bg_cfg)},
4823         {IWL_PCI_DEVICE(0x0084, 0x1316, iwl1000_bg_cfg)},
4824
4825 /* 100 Series WiFi */
4826         {IWL_PCI_DEVICE(0x08AE, 0x1005, iwl100_bgn_cfg)},
4827         {IWL_PCI_DEVICE(0x08AF, 0x1015, iwl100_bgn_cfg)},
4828         {IWL_PCI_DEVICE(0x08AE, 0x1025, iwl100_bgn_cfg)},
4829         {IWL_PCI_DEVICE(0x08AE, 0x1007, iwl100_bg_cfg)},
4830         {IWL_PCI_DEVICE(0x08AE, 0x1017, iwl100_bg_cfg)},
4831
4832 /* 130 Series WiFi */
4833         {IWL_PCI_DEVICE(0x0896, 0x5005, iwl130_bgn_cfg)},
4834         {IWL_PCI_DEVICE(0x0896, 0x5007, iwl130_bg_cfg)},
4835         {IWL_PCI_DEVICE(0x0897, 0x5015, iwl130_bgn_cfg)},
4836         {IWL_PCI_DEVICE(0x0897, 0x5017, iwl130_bg_cfg)},
4837         {IWL_PCI_DEVICE(0x0896, 0x5025, iwl130_bgn_cfg)},
4838         {IWL_PCI_DEVICE(0x0896, 0x5027, iwl130_bg_cfg)},
4839
4840 #endif /* CONFIG_IWL5000 */
4841
4842         {0}
4843 };
4844 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4845
4846 static struct pci_driver iwl_driver = {
4847         .name = DRV_NAME,
4848         .id_table = iwl_hw_card_ids,
4849         .probe = iwl_pci_probe,
4850         .remove = __devexit_p(iwl_pci_remove),
4851 #ifdef CONFIG_PM
4852         .suspend = iwl_pci_suspend,
4853         .resume = iwl_pci_resume,
4854 #endif
4855 };
4856
4857 static int __init iwl_init(void)
4858 {
4859
4860         int ret;
4861         pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
4862         pr_info(DRV_COPYRIGHT "\n");
4863
4864         ret = iwlagn_rate_control_register();
4865         if (ret) {
4866                 pr_err("Unable to register rate control algorithm: %d\n", ret);
4867                 return ret;
4868         }
4869
4870         ret = pci_register_driver(&iwl_driver);
4871         if (ret) {
4872                 pr_err("Unable to initialize PCI module\n");
4873                 goto error_register;
4874         }
4875
4876         return ret;
4877
4878 error_register:
4879         iwlagn_rate_control_unregister();
4880         return ret;
4881 }
4882
4883 static void __exit iwl_exit(void)
4884 {
4885         pci_unregister_driver(&iwl_driver);
4886         iwlagn_rate_control_unregister();
4887 }
4888
4889 module_exit(iwl_exit);
4890 module_init(iwl_init);
4891
4892 #ifdef CONFIG_IWLWIFI_DEBUG
4893 module_param_named(debug50, iwl_debug_level, uint, S_IRUGO);
4894 MODULE_PARM_DESC(debug50, "50XX debug output mask (deprecated)");
4895 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
4896 MODULE_PARM_DESC(debug, "debug output mask");
4897 #endif
4898
4899 module_param_named(swcrypto50, iwlagn_mod_params.sw_crypto, bool, S_IRUGO);
4900 MODULE_PARM_DESC(swcrypto50,
4901                  "using crypto in software (default 0 [hardware]) (deprecated)");
4902 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
4903 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
4904 module_param_named(queues_num50,
4905                    iwlagn_mod_params.num_of_queues, int, S_IRUGO);
4906 MODULE_PARM_DESC(queues_num50,
4907                  "number of hw queues in 50xx series (deprecated)");
4908 module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
4909 MODULE_PARM_DESC(queues_num, "number of hw queues.");
4910 module_param_named(11n_disable50, iwlagn_mod_params.disable_11n, int, S_IRUGO);
4911 MODULE_PARM_DESC(11n_disable50, "disable 50XX 11n functionality (deprecated)");
4912 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, int, S_IRUGO);
4913 MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
4914 module_param_named(amsdu_size_8K50, iwlagn_mod_params.amsdu_size_8K,
4915                    int, S_IRUGO);
4916 MODULE_PARM_DESC(amsdu_size_8K50,
4917                  "enable 8K amsdu size in 50XX series (deprecated)");
4918 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
4919                    int, S_IRUGO);
4920 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
4921 module_param_named(fw_restart50, iwlagn_mod_params.restart_fw, int, S_IRUGO);
4922 MODULE_PARM_DESC(fw_restart50,
4923                  "restart firmware in case of error (deprecated)");
4924 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
4925 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
4926 module_param_named(
4927         disable_hw_scan, iwlagn_mod_params.disable_hw_scan, int, S_IRUGO);
4928 MODULE_PARM_DESC(disable_hw_scan,
4929                  "disable hardware scanning (default 0) (deprecated)");
4930
4931 module_param_named(ucode_alternative, iwlagn_wanted_ucode_alternative, int,
4932                    S_IRUGO);
4933 MODULE_PARM_DESC(ucode_alternative,
4934                  "specify ucode alternative to use from ucode file");
4935
4936 module_param_named(antenna_coupling, iwlagn_ant_coupling, int, S_IRUGO);
4937 MODULE_PARM_DESC(antenna_coupling,
4938                  "specify antenna coupling in dB (defualt: 0 dB)");
4939
4940 module_param_named(bt_ch_announce, iwlagn_bt_ch_announce, bool, S_IRUGO);
4941 MODULE_PARM_DESC(bt_ch_announce,
4942                  "Enable BT channel announcement mode (default: enable)");