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[PATCH] wireless networking: move frame inline functions to generic header
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl3945-base.c
CommitLineData
b481de9c
ZY		 1/******************************************************************************
2 *
3 * Copyright(c) 2003 - 2007 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 * James P. Ketrenos <ipw2100-admin@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29
30/*
31 * NOTE: This file (iwl-base.c) is used to build to multiple hardware targets
32 * by defining IWL to either 3945 or 4965. The Makefile used when building
33 * the base targets will create base-3945.o and base-4965.o
34 *
35 * The eventual goal is to move as many of the #if IWL / #endif blocks out of
36 * this file and into the hardware specific implementation files (iwl-XXXX.c)
37 * and leave only the common (non #ifdef sprinkled) code in this file
38 */
39
40#include <linux/kernel.h>
41#include <linux/module.h>
42#include <linux/version.h>
43#include <linux/init.h>
44#include <linux/pci.h>
45#include <linux/dma-mapping.h>
46#include <linux/delay.h>
47#include <linux/skbuff.h>
48#include <linux/netdevice.h>
49#include <linux/wireless.h>
50#include <linux/firmware.h>
51#include <linux/skbuff.h>
52#include <linux/netdevice.h>
53#include <linux/etherdevice.h>
54#include <linux/if_arp.h>
55
56#include <net/ieee80211_radiotap.h>
57#include <net/mac80211.h>
58
59#include <asm/div64.h>
60
1156b2c6
ZY		 61#define IWL 3945
62
b481de9c
ZY		 63#include "iwlwifi.h"
64#include "iwl-3945.h"
65#include "iwl-helpers.h"
66
67#ifdef CONFIG_IWLWIFI_DEBUG
68u32 iwl_debug_level;
69#endif
70
71/******************************************************************************
72 *
73 * module boiler plate
74 *
75 ******************************************************************************/
76
77/* module parameters */
78int iwl_param_disable_hw_scan;
79int iwl_param_debug;
80int iwl_param_disable; /* def: enable radio */
81int iwl_param_antenna; /* def: 0 = both antennas (use diversity) */
82int iwl_param_hwcrypto; /* def: using software encryption */
83int iwl_param_qos_enable = 1;
84int iwl_param_queues_num = IWL_MAX_NUM_QUEUES;
85
86/*
87 * module name, copyright, version, etc.
88 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
89 */
90
91#define DRV_DESCRIPTION \
92"Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
93
94#ifdef CONFIG_IWLWIFI_DEBUG
95#define VD "d"
96#else
97#define VD
98#endif
99
100#ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
101#define VS "s"
102#else
103#define VS
104#endif
105
106#define IWLWIFI_VERSION "0.1.15k" VD VS
107#define DRV_COPYRIGHT "Copyright(c) 2003-2007 Intel Corporation"
108#define DRV_VERSION IWLWIFI_VERSION
109
110/* Change firmware file name, using "-" and incrementing number,
111 * *only* when uCode interface or architecture changes so that it
112 * is not compatible with earlier drivers.
113 * This number will also appear in << 8 position of 1st dword of uCode file */
114#define IWL3945_UCODE_API "-1"
115
116MODULE_DESCRIPTION(DRV_DESCRIPTION);
117MODULE_VERSION(DRV_VERSION);
118MODULE_AUTHOR(DRV_COPYRIGHT);
119MODULE_LICENSE("GPL");
120
121__le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
122{
123 u16 fc = le16_to_cpu(hdr->frame_control);
124 int hdr_len = ieee80211_get_hdrlen(fc);
125
126 if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
127 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
128 return NULL;
129}
130
131static const struct ieee80211_hw_mode *iwl_get_hw_mode(
132 struct iwl_priv *priv, int mode)
133{
134 int i;
135
136 for (i = 0; i < 3; i++)
137 if (priv->modes[i].mode == mode)
138 return &priv->modes[i];
139
140 return NULL;
141}
142
143static int iwl_is_empty_essid(const char *essid, int essid_len)
144{
145 /* Single white space is for Linksys APs */
146 if (essid_len == 1 && essid[0] == ' ')
147 return 1;
148
149 /* Otherwise, if the entire essid is 0, we assume it is hidden */
150 while (essid_len) {
151 essid_len--;
152 if (essid[essid_len] != '\0')
153 return 0;
154 }
155
156 return 1;
157}
158
159static const char *iwl_escape_essid(const char *essid, u8 essid_len)
160{
161 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
162 const char *s = essid;
163 char *d = escaped;
164
165 if (iwl_is_empty_essid(essid, essid_len)) {
166 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
167 return escaped;
168 }
169
170 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
171 while (essid_len--) {
172 if (*s == '\0') {
173 *d++ = '\\';
174 *d++ = '0';
175 s++;
176 } else
177 *d++ = *s++;
178 }
179 *d = '\0';
180 return escaped;
181}
182
183static void iwl_print_hex_dump(int level, void *p, u32 len)
184{
185#ifdef CONFIG_IWLWIFI_DEBUG
186 if (!(iwl_debug_level & level))
187 return;
188
189 print_hex_dump(KERN_DEBUG, "iwl data: ", DUMP_PREFIX_OFFSET, 16, 1,
190 p, len, 1);
191#endif
192}
193
194/*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
195 * DMA services
196 *
197 * Theory of operation
198 *
199 * A queue is a circular buffers with 'Read' and 'Write' pointers.
200 * 2 empty entries always kept in the buffer to protect from overflow.
201 *
202 * For Tx queue, there are low mark and high mark limits. If, after queuing
203 * the packet for Tx, free space become < low mark, Tx queue stopped. When
204 * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
205 * Tx queue resumed.
206 *
207 * The IPW operates with six queues, one receive queue in the device's
208 * sram, one transmit queue for sending commands to the device firmware,
209 * and four transmit queues for data.
210 ***************************************************/
211
212static int iwl_queue_space(const struct iwl_queue *q)
213{
214 int s = q->last_used - q->first_empty;
215
216 if (q->last_used > q->first_empty)
217 s -= q->n_bd;
218
219 if (s <= 0)
220 s += q->n_window;
221 /* keep some reserve to not confuse empty and full situations */
222 s -= 2;
223 if (s < 0)
224 s = 0;
225 return s;
226}
227
228/* XXX: n_bd must be power-of-two size */
229static inline int iwl_queue_inc_wrap(int index, int n_bd)
230{
231 return ++index & (n_bd - 1);
232}
233
234/* XXX: n_bd must be power-of-two size */
235static inline int iwl_queue_dec_wrap(int index, int n_bd)
236{
237 return --index & (n_bd - 1);
238}
239
240static inline int x2_queue_used(const struct iwl_queue *q, int i)
241{
242 return q->first_empty > q->last_used ?
243 (i >= q->last_used && i < q->first_empty) :
244 !(i < q->last_used && i >= q->first_empty);
245}
246
247static inline u8 get_cmd_index(struct iwl_queue *q, u32 index, int is_huge)
248{
249 if (is_huge)
250 return q->n_window;
251
252 return index & (q->n_window - 1);
253}
254
255static int iwl_queue_init(struct iwl_priv *priv, struct iwl_queue *q,
256 int count, int slots_num, u32 id)
257{
258 q->n_bd = count;
259 q->n_window = slots_num;
260 q->id = id;
261
262 /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
263 * and iwl_queue_dec_wrap are broken. */
264 BUG_ON(!is_power_of_2(count));
265
266 /* slots_num must be power-of-two size, otherwise
267 * get_cmd_index is broken. */
268 BUG_ON(!is_power_of_2(slots_num));
269
270 q->low_mark = q->n_window / 4;
271 if (q->low_mark < 4)
272 q->low_mark = 4;
273
274 q->high_mark = q->n_window / 8;
275 if (q->high_mark < 2)
276 q->high_mark = 2;
277
278 q->first_empty = q->last_used = 0;
279
280 return 0;
281}
282
283static int iwl_tx_queue_alloc(struct iwl_priv *priv,
284 struct iwl_tx_queue *txq, u32 id)
285{
286 struct pci_dev *dev = priv->pci_dev;
287
288 if (id != IWL_CMD_QUEUE_NUM) {
289 txq->txb = kmalloc(sizeof(txq->txb[0]) *
290 TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
291 if (!txq->txb) {
292 IWL_ERROR("kmalloc for auxilary BD "
293 "structures failed\n");
294 goto error;
295 }
296 } else
297 txq->txb = NULL;
298
299 txq->bd = pci_alloc_consistent(dev,
300 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
301 &txq->q.dma_addr);
302
303 if (!txq->bd) {
304 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
305 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
306 goto error;
307 }
308 txq->q.id = id;
309
310 return 0;
311
312 error:
313 if (txq->txb) {
314 kfree(txq->txb);
315 txq->txb = NULL;
316 }
317
318 return -ENOMEM;
319}
320
321int iwl_tx_queue_init(struct iwl_priv *priv,
322 struct iwl_tx_queue *txq, int slots_num, u32 txq_id)
323{
324 struct pci_dev *dev = priv->pci_dev;
325 int len;
326 int rc = 0;
327
328 /* alocate command space + one big command for scan since scan
329 * command is very huge the system will not have two scan at the
330 * same time */
331 len = sizeof(struct iwl_cmd) * slots_num;
332 if (txq_id == IWL_CMD_QUEUE_NUM)
333 len += IWL_MAX_SCAN_SIZE;
334 txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
335 if (!txq->cmd)
336 return -ENOMEM;
337
338 rc = iwl_tx_queue_alloc(priv, txq, txq_id);
339 if (rc) {
340 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
341
342 return -ENOMEM;
343 }
344 txq->need_update = 0;
345
346 /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
347 * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
348 BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
349 iwl_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
350
351 iwl_hw_tx_queue_init(priv, txq);
352
353 return 0;
354}
355
356/**
357 * iwl_tx_queue_free - Deallocate DMA queue.
358 * @txq: Transmit queue to deallocate.
359 *
360 * Empty queue by removing and destroying all BD's.
361 * Free all buffers. txq itself is not freed.
362 *
363 */
364void iwl_tx_queue_free(struct iwl_priv *priv, struct iwl_tx_queue *txq)
365{
366 struct iwl_queue *q = &txq->q;
367 struct pci_dev *dev = priv->pci_dev;
368 int len;
369
370 if (q->n_bd == 0)
371 return;
372
373 /* first, empty all BD's */
374 for (; q->first_empty != q->last_used;
375 q->last_used = iwl_queue_inc_wrap(q->last_used, q->n_bd))
376 iwl_hw_txq_free_tfd(priv, txq);
377
378 len = sizeof(struct iwl_cmd) * q->n_window;
379 if (q->id == IWL_CMD_QUEUE_NUM)
380 len += IWL_MAX_SCAN_SIZE;
381
382 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
383
384 /* free buffers belonging to queue itself */
385 if (txq->q.n_bd)
386 pci_free_consistent(dev, sizeof(struct iwl_tfd_frame) *
387 txq->q.n_bd, txq->bd, txq->q.dma_addr);
388
389 if (txq->txb) {
390 kfree(txq->txb);
391 txq->txb = NULL;
392 }
393
394 /* 0 fill whole structure */
395 memset(txq, 0, sizeof(*txq));
396}
397
398const u8 BROADCAST_ADDR[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
399
400/*************** STATION TABLE MANAGEMENT ****
401 *
402 * NOTE: This needs to be overhauled to better synchronize between
403 * how the iwl-4965.c is using iwl_hw_find_station vs. iwl-3945.c
404 *
405 * mac80211 should also be examined to determine if sta_info is duplicating
406 * the functionality provided here
407 */
408
409/**************************************************************/
410static u8 iwl_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
411{
412 int index = IWL_INVALID_STATION;
413 int i;
414 unsigned long flags;
415
416 spin_lock_irqsave(&priv->sta_lock, flags);
417
418 if (is_ap)
419 index = IWL_AP_ID;
420 else if (is_broadcast_ether_addr(addr))
421 index = priv->hw_setting.bcast_sta_id;
422 else
423 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
424 if (priv->stations[i].used &&
425 !compare_ether_addr(priv->stations[i].sta.sta.addr,
426 addr)) {
427 index = i;
428 break;
429 }
430
431 if (unlikely(index == IWL_INVALID_STATION))
432 goto out;
433
434 if (priv->stations[index].used) {
435 priv->stations[index].used = 0;
436 priv->num_stations--;
437 }
438
439 BUG_ON(priv->num_stations < 0);
440
441out:
442 spin_unlock_irqrestore(&priv->sta_lock, flags);
443 return 0;
444}
445
446static void iwl_clear_stations_table(struct iwl_priv *priv)
447{
448 unsigned long flags;
449
450 spin_lock_irqsave(&priv->sta_lock, flags);
451
452 priv->num_stations = 0;
453 memset(priv->stations, 0, sizeof(priv->stations));
454
455 spin_unlock_irqrestore(&priv->sta_lock, flags);
456}
457
458
459u8 iwl_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap, u8 flags)
460{
461 int i;
462 int index = IWL_INVALID_STATION;
463 struct iwl_station_entry *station;
464 unsigned long flags_spin;
0795af57 465 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 466
467 spin_lock_irqsave(&priv->sta_lock, flags_spin);
468 if (is_ap)
469 index = IWL_AP_ID;
470 else if (is_broadcast_ether_addr(addr))
471 index = priv->hw_setting.bcast_sta_id;
472 else
473 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
474 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
475 addr)) {
476 index = i;
477 break;
478 }
479
480 if (!priv->stations[i].used &&
481 index == IWL_INVALID_STATION)
482 index = i;
483 }
484
485 /* These twh conditions has the same outcome but keep them separate
486 since they have different meaning */
487 if (unlikely(index == IWL_INVALID_STATION)) {
488 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
489 return index;
490 }
491
492 if (priv->stations[index].used &&
493 !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
494 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
495 return index;
496 }
497
0795af57 498 IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
b481de9c
ZY		 499 station = &priv->stations[index];
500 station->used = 1;
501 priv->num_stations++;
502
503 memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd));
504 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
505 station->sta.mode = 0;
506 station->sta.sta.sta_id = index;
507 station->sta.station_flags = 0;
508
509 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
510 iwl_send_add_station(priv, &station->sta, flags);
511 return index;
512
513}
514
515/*************** DRIVER STATUS FUNCTIONS *****/
516
517static inline int iwl_is_ready(struct iwl_priv *priv)
518{
519 /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
520 * set but EXIT_PENDING is not */
521 return test_bit(STATUS_READY, &priv->status) &&
522 test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
523 !test_bit(STATUS_EXIT_PENDING, &priv->status);
524}
525
526static inline int iwl_is_alive(struct iwl_priv *priv)
527{
528 return test_bit(STATUS_ALIVE, &priv->status);
529}
530
531static inline int iwl_is_init(struct iwl_priv *priv)
532{
533 return test_bit(STATUS_INIT, &priv->status);
534}
535
536static inline int iwl_is_rfkill(struct iwl_priv *priv)
537{
538 return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
539 test_bit(STATUS_RF_KILL_SW, &priv->status);
540}
541
542static inline int iwl_is_ready_rf(struct iwl_priv *priv)
543{
544
545 if (iwl_is_rfkill(priv))
546 return 0;
547
548 return iwl_is_ready(priv);
549}
550
551/*************** HOST COMMAND QUEUE FUNCTIONS *****/
552
553#define IWL_CMD(x) case x : return #x
554
555static const char *get_cmd_string(u8 cmd)
556{
557 switch (cmd) {
558 IWL_CMD(REPLY_ALIVE);
559 IWL_CMD(REPLY_ERROR);
560 IWL_CMD(REPLY_RXON);
561 IWL_CMD(REPLY_RXON_ASSOC);
562 IWL_CMD(REPLY_QOS_PARAM);
563 IWL_CMD(REPLY_RXON_TIMING);
564 IWL_CMD(REPLY_ADD_STA);
565 IWL_CMD(REPLY_REMOVE_STA);
566 IWL_CMD(REPLY_REMOVE_ALL_STA);
567 IWL_CMD(REPLY_3945_RX);
568 IWL_CMD(REPLY_TX);
569 IWL_CMD(REPLY_RATE_SCALE);
570 IWL_CMD(REPLY_LEDS_CMD);
571 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
572 IWL_CMD(RADAR_NOTIFICATION);
573 IWL_CMD(REPLY_QUIET_CMD);
574 IWL_CMD(REPLY_CHANNEL_SWITCH);
575 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
576 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
577 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
578 IWL_CMD(POWER_TABLE_CMD);
579 IWL_CMD(PM_SLEEP_NOTIFICATION);
580 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
581 IWL_CMD(REPLY_SCAN_CMD);
582 IWL_CMD(REPLY_SCAN_ABORT_CMD);
583 IWL_CMD(SCAN_START_NOTIFICATION);
584 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
585 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
586 IWL_CMD(BEACON_NOTIFICATION);
587 IWL_CMD(REPLY_TX_BEACON);
588 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
589 IWL_CMD(QUIET_NOTIFICATION);
590 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
591 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
592 IWL_CMD(REPLY_BT_CONFIG);
593 IWL_CMD(REPLY_STATISTICS_CMD);
594 IWL_CMD(STATISTICS_NOTIFICATION);
595 IWL_CMD(REPLY_CARD_STATE_CMD);
596 IWL_CMD(CARD_STATE_NOTIFICATION);
597 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
598 default:
599 return "UNKNOWN";
600
601 }
602}
603
604#define HOST_COMPLETE_TIMEOUT (HZ / 2)
605
606/**
607 * iwl_enqueue_hcmd - enqueue a uCode command
608 * @priv: device private data point
609 * @cmd: a point to the ucode command structure
610 *
611 * The function returns < 0 values to indicate the operation is
612 * failed. On success, it turns the index (> 0) of command in the
613 * command queue.
614 */
615static int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
616{
617 struct iwl_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
618 struct iwl_queue *q = &txq->q;
619 struct iwl_tfd_frame *tfd;
620 u32 *control_flags;
621 struct iwl_cmd *out_cmd;
622 u32 idx;
623 u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
624 dma_addr_t phys_addr;
625 int pad;
626 u16 count;
627 int ret;
628 unsigned long flags;
629
630 /* If any of the command structures end up being larger than
631 * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
632 * we will need to increase the size of the TFD entries */
633 BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
634 !(cmd->meta.flags & CMD_SIZE_HUGE));
635
636 if (iwl_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
637 IWL_ERROR("No space for Tx\n");
638 return -ENOSPC;
639 }
640
641 spin_lock_irqsave(&priv->hcmd_lock, flags);
642
643 tfd = &txq->bd[q->first_empty];
644 memset(tfd, 0, sizeof(*tfd));
645
646 control_flags = (u32 *) tfd;
647
648 idx = get_cmd_index(q, q->first_empty, cmd->meta.flags & CMD_SIZE_HUGE);
649 out_cmd = &txq->cmd[idx];
650
651 out_cmd->hdr.cmd = cmd->id;
652 memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
653 memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
654
655 /* At this point, the out_cmd now has all of the incoming cmd
656 * information */
657
658 out_cmd->hdr.flags = 0;
659 out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
660 INDEX_TO_SEQ(q->first_empty));
661 if (out_cmd->meta.flags & CMD_SIZE_HUGE)
662 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
663
664 phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
665 offsetof(struct iwl_cmd, hdr);
666 iwl_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
667
668 pad = U32_PAD(cmd->len);
669 count = TFD_CTL_COUNT_GET(*control_flags);
670 *control_flags = TFD_CTL_COUNT_SET(count) | TFD_CTL_PAD_SET(pad);
671
672 IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
673 "%d bytes at %d[%d]:%d\n",
674 get_cmd_string(out_cmd->hdr.cmd),
675 out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
676 fix_size, q->first_empty, idx, IWL_CMD_QUEUE_NUM);
677
678 txq->need_update = 1;
679 q->first_empty = iwl_queue_inc_wrap(q->first_empty, q->n_bd);
680 ret = iwl_tx_queue_update_write_ptr(priv, txq);
681
682 spin_unlock_irqrestore(&priv->hcmd_lock, flags);
683 return ret ? ret : idx;
684}
685
686int iwl_send_cmd_async(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
687{
688 int ret;
689
690 BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
691
692 /* An asynchronous command can not expect an SKB to be set. */
693 BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
694
695 /* An asynchronous command MUST have a callback. */
696 BUG_ON(!cmd->meta.u.callback);
697
698 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
699 return -EBUSY;
700
701 ret = iwl_enqueue_hcmd(priv, cmd);
702 if (ret < 0) {
703 IWL_ERROR("Error sending %s: iwl_enqueue_hcmd failed: %d\n",
704 get_cmd_string(cmd->id), ret);
705 return ret;
706 }
707 return 0;
708}
709
710int iwl_send_cmd_sync(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
711{
712 int cmd_idx;
713 int ret;
714 static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */
715
716 BUG_ON(cmd->meta.flags & CMD_ASYNC);
717
718 /* A synchronous command can not have a callback set. */
719 BUG_ON(cmd->meta.u.callback != NULL);
720
721 if (atomic_xchg(&entry, 1)) {
722 IWL_ERROR("Error sending %s: Already sending a host command\n",
723 get_cmd_string(cmd->id));
724 return -EBUSY;
725 }
726
727 set_bit(STATUS_HCMD_ACTIVE, &priv->status);
728
729 if (cmd->meta.flags & CMD_WANT_SKB)
730 cmd->meta.source = &cmd->meta;
731
732 cmd_idx = iwl_enqueue_hcmd(priv, cmd);
733 if (cmd_idx < 0) {
734 ret = cmd_idx;
735 IWL_ERROR("Error sending %s: iwl_enqueue_hcmd failed: %d\n",
736 get_cmd_string(cmd->id), ret);
737 goto out;
738 }
739
740 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
741 !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
742 HOST_COMPLETE_TIMEOUT);
743 if (!ret) {
744 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
745 IWL_ERROR("Error sending %s: time out after %dms.\n",
746 get_cmd_string(cmd->id),
747 jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
748
749 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
750 ret = -ETIMEDOUT;
751 goto cancel;
752 }
753 }
754
755 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
756 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
757 get_cmd_string(cmd->id));
758 ret = -ECANCELED;
759 goto fail;
760 }
761 if (test_bit(STATUS_FW_ERROR, &priv->status)) {
762 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
763 get_cmd_string(cmd->id));
764 ret = -EIO;
765 goto fail;
766 }
767 if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
768 IWL_ERROR("Error: Response NULL in '%s'\n",
769 get_cmd_string(cmd->id));
770 ret = -EIO;
771 goto out;
772 }
773
774 ret = 0;
775 goto out;
776
777cancel:
778 if (cmd->meta.flags & CMD_WANT_SKB) {
779 struct iwl_cmd *qcmd;
780
781 /* Cancel the CMD_WANT_SKB flag for the cmd in the
782 * TX cmd queue. Otherwise in case the cmd comes
783 * in later, it will possibly set an invalid
784 * address (cmd->meta.source). */
785 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
786 qcmd->meta.flags &= ~CMD_WANT_SKB;
787 }
788fail:
789 if (cmd->meta.u.skb) {
790 dev_kfree_skb_any(cmd->meta.u.skb);
791 cmd->meta.u.skb = NULL;
792 }
793out:
794 atomic_set(&entry, 0);
795 return ret;
796}
797
798int iwl_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
799{
800 /* A command can not be asynchronous AND expect an SKB to be set. */
801 BUG_ON((cmd->meta.flags & CMD_ASYNC) &&
802 (cmd->meta.flags & CMD_WANT_SKB));
803
804 if (cmd->meta.flags & CMD_ASYNC)
805 return iwl_send_cmd_async(priv, cmd);
806
807 return iwl_send_cmd_sync(priv, cmd);
808}
809
810int iwl_send_cmd_pdu(struct iwl_priv *priv, u8 id, u16 len, const void *data)
811{
812 struct iwl_host_cmd cmd = {
813 .id = id,
814 .len = len,
815 .data = data,
816 };
817
818 return iwl_send_cmd_sync(priv, &cmd);
819}
820
821static int __must_check iwl_send_cmd_u32(struct iwl_priv *priv, u8 id, u32 val)
822{
823 struct iwl_host_cmd cmd = {
824 .id = id,
825 .len = sizeof(val),
826 .data = &val,
827 };
828
829 return iwl_send_cmd_sync(priv, &cmd);
830}
831
832int iwl_send_statistics_request(struct iwl_priv *priv)
833{
834 return iwl_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
835}
836
837/**
838 * iwl_rxon_add_station - add station into station table.
839 *
840 * there is only one AP station with id= IWL_AP_ID
841 * NOTE: mutex must be held before calling the this fnction
842*/
843static int iwl_rxon_add_station(struct iwl_priv *priv,
844 const u8 *addr, int is_ap)
845{
846 u8 rc;
847
848 /* Remove this station if it happens to already exist */
849 iwl_remove_station(priv, addr, is_ap);
850
851 rc = iwl_add_station(priv, addr, is_ap, 0);
852
853 return rc;
854}
855
856/**
857 * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
858 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
859 * @channel: Any channel valid for the requested phymode
860
861 * In addition to setting the staging RXON, priv->phymode is also set.
862 *
863 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
864 * in the staging RXON flag structure based on the phymode
865 */
866static int iwl_set_rxon_channel(struct iwl_priv *priv, u8 phymode, u16 channel)
867{
868 if (!iwl_get_channel_info(priv, phymode, channel)) {
869 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
870 channel, phymode);
871 return -EINVAL;
872 }
873
874 if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
875 (priv->phymode == phymode))
876 return 0;
877
878 priv->staging_rxon.channel = cpu_to_le16(channel);
879 if (phymode == MODE_IEEE80211A)
880 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
881 else
882 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
883
884 priv->phymode = phymode;
885
886 IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, phymode);
887
888 return 0;
889}
890
891/**
892 * iwl_check_rxon_cmd - validate RXON structure is valid
893 *
894 * NOTE: This is really only useful during development and can eventually
895 * be #ifdef'd out once the driver is stable and folks aren't actively
896 * making changes
897 */
898static int iwl_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
899{
900 int error = 0;
901 int counter = 1;
902
903 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
904 error |= le32_to_cpu(rxon->flags &
905 (RXON_FLG_TGJ_NARROW_BAND_MSK |
906 RXON_FLG_RADAR_DETECT_MSK));
907 if (error)
908 IWL_WARNING("check 24G fields %d | %d\n",
909 counter++, error);
910 } else {
911 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
912 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
913 if (error)
914 IWL_WARNING("check 52 fields %d | %d\n",
915 counter++, error);
916 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
917 if (error)
918 IWL_WARNING("check 52 CCK %d | %d\n",
919 counter++, error);
920 }
921 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
922 if (error)
923 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
924
925 /* make sure basic rates 6Mbps and 1Mbps are supported */
926 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
927 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
928 if (error)
929 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
930
931 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
932 if (error)
933 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
934
935 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
936 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
937 if (error)
938 IWL_WARNING("check CCK and short slot %d | %d\n",
939 counter++, error);
940
941 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
942 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
943 if (error)
944 IWL_WARNING("check CCK & auto detect %d | %d\n",
945 counter++, error);
946
947 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
948 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
949 if (error)
950 IWL_WARNING("check TGG and auto detect %d | %d\n",
951 counter++, error);
952
953 if ((rxon->flags & RXON_FLG_DIS_DIV_MSK))
954 error |= ((rxon->flags & (RXON_FLG_ANT_B_MSK |
955 RXON_FLG_ANT_A_MSK)) == 0);
956 if (error)
957 IWL_WARNING("check antenna %d %d\n", counter++, error);
958
959 if (error)
960 IWL_WARNING("Tuning to channel %d\n",
961 le16_to_cpu(rxon->channel));
962
963 if (error) {
964 IWL_ERROR("Not a valid iwl_rxon_assoc_cmd field values\n");
965 return -1;
966 }
967 return 0;
968}
969
970/**
971 * iwl_full_rxon_required - determine if RXON_ASSOC can be used in RXON commit
972 * @priv: staging_rxon is comapred to active_rxon
973 *
974 * If the RXON structure is changing sufficient to require a new
975 * tune or to clear and reset the RXON_FILTER_ASSOC_MSK then return 1
976 * to indicate a new tune is required.
977 */
978static int iwl_full_rxon_required(struct iwl_priv *priv)
979{
980
981 /* These items are only settable from the full RXON command */
982 if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
983 compare_ether_addr(priv->staging_rxon.bssid_addr,
984 priv->active_rxon.bssid_addr) ||
985 compare_ether_addr(priv->staging_rxon.node_addr,
986 priv->active_rxon.node_addr) ||
987 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
988 priv->active_rxon.wlap_bssid_addr) ||
989 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
990 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
991 (priv->staging_rxon.air_propagation !=
992 priv->active_rxon.air_propagation) ||
993 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
994 return 1;
995
996 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
997 * be updated with the RXON_ASSOC command -- however only some
998 * flag transitions are allowed using RXON_ASSOC */
999
1000 /* Check if we are not switching bands */
1001 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
1002 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
1003 return 1;
1004
1005 /* Check if we are switching association toggle */
1006 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
1007 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
1008 return 1;
1009
1010 return 0;
1011}
1012
1013static int iwl_send_rxon_assoc(struct iwl_priv *priv)
1014{
1015 int rc = 0;
1016 struct iwl_rx_packet *res = NULL;
1017 struct iwl_rxon_assoc_cmd rxon_assoc;
1018 struct iwl_host_cmd cmd = {
1019 .id = REPLY_RXON_ASSOC,
1020 .len = sizeof(rxon_assoc),
1021 .meta.flags = CMD_WANT_SKB,
1022 .data = &rxon_assoc,
1023 };
1024 const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon;
1025 const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon;
1026
1027 if ((rxon1->flags == rxon2->flags) &&
1028 (rxon1->filter_flags == rxon2->filter_flags) &&
1029 (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1030 (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1031 IWL_DEBUG_INFO("Using current RXON_ASSOC. Not resending.\n");
1032 return 0;
1033 }
1034
1035 rxon_assoc.flags = priv->staging_rxon.flags;
1036 rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1037 rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1038 rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1039 rxon_assoc.reserved = 0;
1040
1041 rc = iwl_send_cmd_sync(priv, &cmd);
1042 if (rc)
1043 return rc;
1044
1045 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1046 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1047 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1048 rc = -EIO;
1049 }
1050
1051 priv->alloc_rxb_skb--;
1052 dev_kfree_skb_any(cmd.meta.u.skb);
1053
1054 return rc;
1055}
1056
1057/**
1058 * iwl_commit_rxon - commit staging_rxon to hardware
1059 *
1060 * The RXON command in staging_rxon is commited to the hardware and
1061 * the active_rxon structure is updated with the new data. This
1062 * function correctly transitions out of the RXON_ASSOC_MSK state if
1063 * a HW tune is required based on the RXON structure changes.
1064 */
1065static int iwl_commit_rxon(struct iwl_priv *priv)
1066{
1067 /* cast away the const for active_rxon in this function */
1068 struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1069 int rc = 0;
0795af57 1070 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 1071
1072 if (!iwl_is_alive(priv))
1073 return -1;
1074
1075 /* always get timestamp with Rx frame */
1076 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1077
1078 /* select antenna */
1079 priv->staging_rxon.flags &=
1080 ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
1081 priv->staging_rxon.flags |= iwl3945_get_antenna_flags(priv);
1082
1083 rc = iwl_check_rxon_cmd(&priv->staging_rxon);
1084 if (rc) {
1085 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
1086 return -EINVAL;
1087 }
1088
1089 /* If we don't need to send a full RXON, we can use
1090 * iwl_rxon_assoc_cmd which is used to reconfigure filter
1091 * and other flags for the current radio configuration. */
1092 if (!iwl_full_rxon_required(priv)) {
1093 rc = iwl_send_rxon_assoc(priv);
1094 if (rc) {
1095 IWL_ERROR("Error setting RXON_ASSOC "
1096 "configuration (%d).\n", rc);
1097 return rc;
1098 }
1099
1100 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1101
1102 return 0;
1103 }
1104
1105 /* If we are currently associated and the new config requires
1106 * an RXON_ASSOC and the new config wants the associated mask enabled,
1107 * we must clear the associated from the active configuration
1108 * before we apply the new config */
1109 if (iwl_is_associated(priv) &&
1110 (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1111 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1112 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1113
1114 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
1115 sizeof(struct iwl_rxon_cmd),
1116 &priv->active_rxon);
1117
1118 /* If the mask clearing failed then we set
1119 * active_rxon back to what it was previously */
1120 if (rc) {
1121 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1122 IWL_ERROR("Error clearing ASSOC_MSK on current "
1123 "configuration (%d).\n", rc);
1124 return rc;
1125 }
1126
1127 /* The RXON bit toggling will have cleared out the
1128 * station table in the uCode, so blank it in the driver
1129 * as well */
1130 iwl_clear_stations_table(priv);
1131 } else if (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) {
1132 /* When switching from non-associated to associated, the
1133 * uCode clears out the station table; so clear it in the
1134 * driver as well */
1135 iwl_clear_stations_table(priv);
1136 }
1137
1138 IWL_DEBUG_INFO("Sending RXON\n"
1139 "* with%s RXON_FILTER_ASSOC_MSK\n"
1140 "* channel = %d\n"
0795af57 1141 "* bssid = %s\n",
b481de9c
ZY		 1142 ((priv->staging_rxon.filter_flags &
1143 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1144 le16_to_cpu(priv->staging_rxon.channel),
0795af57 1145 print_mac(mac, priv->staging_rxon.bssid_addr));
b481de9c
ZY		 1146
1147 /* Apply the new configuration */
1148 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
1149 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
1150 if (rc) {
1151 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1152 return rc;
1153 }
1154
1155 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1156
1157 /* If we issue a new RXON command which required a tune then we must
1158 * send a new TXPOWER command or we won't be able to Tx any frames */
1159 rc = iwl_hw_reg_send_txpower(priv);
1160 if (rc) {
1161 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1162 return rc;
1163 }
1164
1165 /* Add the broadcast address so we can send broadcast frames */
1166 if (iwl_rxon_add_station(priv, BROADCAST_ADDR, 0) ==
1167 IWL_INVALID_STATION) {
1168 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1169 return -EIO;
1170 }
1171
1172 /* If we have set the ASSOC_MSK and we are in BSS mode then
1173 * add the IWL_AP_ID to the station rate table */
1174 if (iwl_is_associated(priv) &&
1175 (priv->iw_mode == IEEE80211_IF_TYPE_STA))
1176 if (iwl_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
1177 == IWL_INVALID_STATION) {
1178 IWL_ERROR("Error adding AP address for transmit.\n");
1179 return -EIO;
1180 }
1181
1182 /* Init the hardware's rate fallback order based on the
1183 * phymode */
1184 rc = iwl3945_init_hw_rate_table(priv);
1185 if (rc) {
1186 IWL_ERROR("Error setting HW rate table: %02X\n", rc);
1187 return -EIO;
1188 }
1189
1190 return 0;
1191}
1192
1193static int iwl_send_bt_config(struct iwl_priv *priv)
1194{
1195 struct iwl_bt_cmd bt_cmd = {
1196 .flags = 3,
1197 .lead_time = 0xAA,
1198 .max_kill = 1,
1199 .kill_ack_mask = 0,
1200 .kill_cts_mask = 0,
1201 };
1202
1203 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1204 sizeof(struct iwl_bt_cmd), &bt_cmd);
1205}
1206
1207static int iwl_send_scan_abort(struct iwl_priv *priv)
1208{
1209 int rc = 0;
1210 struct iwl_rx_packet *res;
1211 struct iwl_host_cmd cmd = {
1212 .id = REPLY_SCAN_ABORT_CMD,
1213 .meta.flags = CMD_WANT_SKB,
1214 };
1215
1216 /* If there isn't a scan actively going on in the hardware
1217 * then we are in between scan bands and not actually
1218 * actively scanning, so don't send the abort command */
1219 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1220 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1221 return 0;
1222 }
1223
1224 rc = iwl_send_cmd_sync(priv, &cmd);
1225 if (rc) {
1226 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1227 return rc;
1228 }
1229
1230 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1231 if (res->u.status != CAN_ABORT_STATUS) {
1232 /* The scan abort will return 1 for success or
1233 * 2 for "failure". A failure condition can be
1234 * due to simply not being in an active scan which
1235 * can occur if we send the scan abort before we
1236 * the microcode has notified us that a scan is
1237 * completed. */
1238 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1239 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1240 clear_bit(STATUS_SCAN_HW, &priv->status);
1241 }
1242
1243 dev_kfree_skb_any(cmd.meta.u.skb);
1244
1245 return rc;
1246}
1247
1248static int iwl_card_state_sync_callback(struct iwl_priv *priv,
1249 struct iwl_cmd *cmd,
1250 struct sk_buff *skb)
1251{
1252 return 1;
1253}
1254
1255/*
1256 * CARD_STATE_CMD
1257 *
1258 * Use: Sets the internal card state to enable, disable, or halt
1259 *
1260 * When in the 'enable' state the card operates as normal.
1261 * When in the 'disable' state, the card enters into a low power mode.
1262 * When in the 'halt' state, the card is shut down and must be fully
1263 * restarted to come back on.
1264 */
1265static int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
1266{
1267 struct iwl_host_cmd cmd = {
1268 .id = REPLY_CARD_STATE_CMD,
1269 .len = sizeof(u32),
1270 .data = &flags,
1271 .meta.flags = meta_flag,
1272 };
1273
1274 if (meta_flag & CMD_ASYNC)
1275 cmd.meta.u.callback = iwl_card_state_sync_callback;
1276
1277 return iwl_send_cmd(priv, &cmd);
1278}
1279
1280static int iwl_add_sta_sync_callback(struct iwl_priv *priv,
1281 struct iwl_cmd *cmd, struct sk_buff *skb)
1282{
1283 struct iwl_rx_packet *res = NULL;
1284
1285 if (!skb) {
1286 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1287 return 1;
1288 }
1289
1290 res = (struct iwl_rx_packet *)skb->data;
1291 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1292 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1293 res->hdr.flags);
1294 return 1;
1295 }
1296
1297 switch (res->u.add_sta.status) {
1298 case ADD_STA_SUCCESS_MSK:
1299 break;
1300 default:
1301 break;
1302 }
1303
1304 /* We didn't cache the SKB; let the caller free it */
1305 return 1;
1306}
1307
1308int iwl_send_add_station(struct iwl_priv *priv,
1309 struct iwl_addsta_cmd *sta, u8 flags)
1310{
1311 struct iwl_rx_packet *res = NULL;
1312 int rc = 0;
1313 struct iwl_host_cmd cmd = {
1314 .id = REPLY_ADD_STA,
1315 .len = sizeof(struct iwl_addsta_cmd),
1316 .meta.flags = flags,
1317 .data = sta,
1318 };
1319
1320 if (flags & CMD_ASYNC)
1321 cmd.meta.u.callback = iwl_add_sta_sync_callback;
1322 else
1323 cmd.meta.flags |= CMD_WANT_SKB;
1324
1325 rc = iwl_send_cmd(priv, &cmd);
1326
1327 if (rc || (flags & CMD_ASYNC))
1328 return rc;
1329
1330 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1331 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1332 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1333 res->hdr.flags);
1334 rc = -EIO;
1335 }
1336
1337 if (rc == 0) {
1338 switch (res->u.add_sta.status) {
1339 case ADD_STA_SUCCESS_MSK:
1340 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1341 break;
1342 default:
1343 rc = -EIO;
1344 IWL_WARNING("REPLY_ADD_STA failed\n");
1345 break;
1346 }
1347 }
1348
1349 priv->alloc_rxb_skb--;
1350 dev_kfree_skb_any(cmd.meta.u.skb);
1351
1352 return rc;
1353}
1354
1355static int iwl_update_sta_key_info(struct iwl_priv *priv,
1356 struct ieee80211_key_conf *keyconf,
1357 u8 sta_id)
1358{
1359 unsigned long flags;
1360 __le16 key_flags = 0;
1361
1362 switch (keyconf->alg) {
1363 case ALG_CCMP:
1364 key_flags |= STA_KEY_FLG_CCMP;
1365 key_flags |= cpu_to_le16(
1366 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1367 key_flags &= ~STA_KEY_FLG_INVALID;
1368 break;
1369 case ALG_TKIP:
1370 case ALG_WEP:
1371 return -EINVAL;
1372 default:
1373 return -EINVAL;
1374 }
1375 spin_lock_irqsave(&priv->sta_lock, flags);
1376 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1377 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1378 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1379 keyconf->keylen);
1380
1381 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1382 keyconf->keylen);
1383 priv->stations[sta_id].sta.key.key_flags = key_flags;
1384 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1385 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1386
1387 spin_unlock_irqrestore(&priv->sta_lock, flags);
1388
1389 IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1390 iwl_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1391 return 0;
1392}
1393
1394static int iwl_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
1395{
1396 unsigned long flags;
1397
1398 spin_lock_irqsave(&priv->sta_lock, flags);
1399 memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl_hw_key));
1400 memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl_keyinfo));
1401 priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1402 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1403 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1404 spin_unlock_irqrestore(&priv->sta_lock, flags);
1405
1406 IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1407 iwl_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1408 return 0;
1409}
1410
1411static void iwl_clear_free_frames(struct iwl_priv *priv)
1412{
1413 struct list_head *element;
1414
1415 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1416 priv->frames_count);
1417
1418 while (!list_empty(&priv->free_frames)) {
1419 element = priv->free_frames.next;
1420 list_del(element);
1421 kfree(list_entry(element, struct iwl_frame, list));
1422 priv->frames_count--;
1423 }
1424
1425 if (priv->frames_count) {
1426 IWL_WARNING("%d frames still in use. Did we lose one?\n",
1427 priv->frames_count);
1428 priv->frames_count = 0;
1429 }
1430}
1431
1432static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
1433{
1434 struct iwl_frame *frame;
1435 struct list_head *element;
1436 if (list_empty(&priv->free_frames)) {
1437 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1438 if (!frame) {
1439 IWL_ERROR("Could not allocate frame!\n");
1440 return NULL;
1441 }
1442
1443 priv->frames_count++;
1444 return frame;
1445 }
1446
1447 element = priv->free_frames.next;
1448 list_del(element);
1449 return list_entry(element, struct iwl_frame, list);
1450}
1451
1452static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
1453{
1454 memset(frame, 0, sizeof(*frame));
1455 list_add(&frame->list, &priv->free_frames);
1456}
1457
1458unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
1459 struct ieee80211_hdr *hdr,
1460 const u8 *dest, int left)
1461{
1462
1463 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
1464 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1465 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1466 return 0;
1467
1468 if (priv->ibss_beacon->len > left)
1469 return 0;
1470
1471 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1472
1473 return priv->ibss_beacon->len;
1474}
1475
1476static int iwl_rate_index_from_plcp(int plcp)
1477{
1478 int i = 0;
1479
1480 for (i = 0; i < IWL_RATE_COUNT; i++)
1481 if (iwl_rates[i].plcp == plcp)
1482 return i;
1483 return -1;
1484}
1485
1486static u8 iwl_rate_get_lowest_plcp(int rate_mask)
1487{
1488 u8 i;
1489
1490 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1491 i = iwl_rates[i].next_ieee) {
1492 if (rate_mask & (1 << i))
1493 return iwl_rates[i].plcp;
1494 }
1495
1496 return IWL_RATE_INVALID;
1497}
1498
1499static int iwl_send_beacon_cmd(struct iwl_priv *priv)
1500{
1501 struct iwl_frame *frame;
1502 unsigned int frame_size;
1503 int rc;
1504 u8 rate;
1505
1506 frame = iwl_get_free_frame(priv);
1507
1508 if (!frame) {
1509 IWL_ERROR("Could not obtain free frame buffer for beacon "
1510 "command.\n");
1511 return -ENOMEM;
1512 }
1513
1514 if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1515 rate = iwl_rate_get_lowest_plcp(priv->active_rate_basic &
1516 0xFF0);
1517 if (rate == IWL_INVALID_RATE)
1518 rate = IWL_RATE_6M_PLCP;
1519 } else {
1520 rate = iwl_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1521 if (rate == IWL_INVALID_RATE)
1522 rate = IWL_RATE_1M_PLCP;
1523 }
1524
1525 frame_size = iwl_hw_get_beacon_cmd(priv, frame, rate);
1526
1527 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1528 &frame->u.cmd[0]);
1529
1530 iwl_free_frame(priv, frame);
1531
1532 return rc;
1533}
1534
1535/******************************************************************************
1536 *
1537 * EEPROM related functions
1538 *
1539 ******************************************************************************/
1540
1541static void get_eeprom_mac(struct iwl_priv *priv, u8 *mac)
1542{
1543 memcpy(mac, priv->eeprom.mac_address, 6);
1544}
1545
1546/**
1547 * iwl_eeprom_init - read EEPROM contents
1548 *
1549 * Load the EEPROM from adapter into priv->eeprom
1550 *
1551 * NOTE: This routine uses the non-debug IO access functions.
1552 */
1553int iwl_eeprom_init(struct iwl_priv *priv)
1554{
1555 u16 *e = (u16 *)&priv->eeprom;
1556 u32 gp = iwl_read32(priv, CSR_EEPROM_GP);
1557 u32 r;
1558 int sz = sizeof(priv->eeprom);
1559 int rc;
1560 int i;
1561 u16 addr;
1562
1563 /* The EEPROM structure has several padding buffers within it
1564 * and when adding new EEPROM maps is subject to programmer errors
1565 * which may be very difficult to identify without explicitly
1566 * checking the resulting size of the eeprom map. */
1567 BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1568
1569 if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1570 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
1571 return -ENOENT;
1572 }
1573
1574 rc = iwl_eeprom_aqcuire_semaphore(priv);
1575 if (rc < 0) {
1576 IWL_ERROR("Failed to aqcuire EEPROM semaphore.\n");
1577 return -ENOENT;
1578 }
1579
1580 /* eeprom is an array of 16bit values */
1581 for (addr = 0; addr < sz; addr += sizeof(u16)) {
1582 _iwl_write32(priv, CSR_EEPROM_REG, addr << 1);
1583 _iwl_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1584
1585 for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
1586 i += IWL_EEPROM_ACCESS_DELAY) {
1587 r = _iwl_read_restricted(priv, CSR_EEPROM_REG);
1588 if (r & CSR_EEPROM_REG_READ_VALID_MSK)
1589 break;
1590 udelay(IWL_EEPROM_ACCESS_DELAY);
1591 }
1592
1593 if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
1594 IWL_ERROR("Time out reading EEPROM[%d]", addr);
1595 return -ETIMEDOUT;
1596 }
1597 e[addr / 2] = le16_to_cpu(r >> 16);
1598 }
1599
1600 return 0;
1601}
1602
1603/******************************************************************************
1604 *
1605 * Misc. internal state and helper functions
1606 *
1607 ******************************************************************************/
1608#ifdef CONFIG_IWLWIFI_DEBUG
1609
1610/**
1611 * iwl_report_frame - dump frame to syslog during debug sessions
1612 *
1613 * hack this function to show different aspects of received frames,
1614 * including selective frame dumps.
1615 * group100 parameter selects whether to show 1 out of 100 good frames.
1616 *
1617 * TODO: ieee80211_hdr stuff is common to 3945 and 4965, so frame type
1618 * info output is okay, but some of this stuff (e.g. iwl_rx_frame_stats)
1619 * is 3945-specific and gives bad output for 4965. Need to split the
1620 * functionality, keep common stuff here.
1621 */
1622void iwl_report_frame(struct iwl_priv *priv,
1623 struct iwl_rx_packet *pkt,
1624 struct ieee80211_hdr *header, int group100)
1625{
1626 u32 to_us;
1627 u32 print_summary = 0;
1628 u32 print_dump = 0; /* set to 1 to dump all frames' contents */
1629 u32 hundred = 0;
1630 u32 dataframe = 0;
1631 u16 fc;
1632 u16 seq_ctl;
1633 u16 channel;
1634 u16 phy_flags;
1635 int rate_sym;
1636 u16 length;
1637 u16 status;
1638 u16 bcn_tmr;
1639 u32 tsf_low;
1640 u64 tsf;
1641 u8 rssi;
1642 u8 agc;
1643 u16 sig_avg;
1644 u16 noise_diff;
1645 struct iwl_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
1646 struct iwl_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
1647 struct iwl_rx_frame_end *rx_end = IWL_RX_END(pkt);
1648 u8 *data = IWL_RX_DATA(pkt);
1649
1650 /* MAC header */
1651 fc = le16_to_cpu(header->frame_control);
1652 seq_ctl = le16_to_cpu(header->seq_ctrl);
1653
1654 /* metadata */
1655 channel = le16_to_cpu(rx_hdr->channel);
1656 phy_flags = le16_to_cpu(rx_hdr->phy_flags);
1657 rate_sym = rx_hdr->rate;
1658 length = le16_to_cpu(rx_hdr->len);
1659
1660 /* end-of-frame status and timestamp */
1661 status = le32_to_cpu(rx_end->status);
1662 bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp);
1663 tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff;
1664 tsf = le64_to_cpu(rx_end->timestamp);
1665
1666 /* signal statistics */
1667 rssi = rx_stats->rssi;
1668 agc = rx_stats->agc;
1669 sig_avg = le16_to_cpu(rx_stats->sig_avg);
1670 noise_diff = le16_to_cpu(rx_stats->noise_diff);
1671
1672 to_us = !compare_ether_addr(header->addr1, priv->mac_addr);
1673
1674 /* if data frame is to us and all is good,
1675 * (optionally) print summary for only 1 out of every 100 */
1676 if (to_us && (fc & ~IEEE80211_FCTL_PROTECTED) ==
1677 (IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) {
1678 dataframe = 1;
1679 if (!group100)
1680 print_summary = 1; /* print each frame */
1681 else if (priv->framecnt_to_us < 100) {
1682 priv->framecnt_to_us++;
1683 print_summary = 0;
1684 } else {
1685 priv->framecnt_to_us = 0;
1686 print_summary = 1;
1687 hundred = 1;
1688 }
1689 } else {
1690 /* print summary for all other frames */
1691 print_summary = 1;
1692 }
1693
1694 if (print_summary) {
1695 char *title;
1696 u32 rate;
1697
1698 if (hundred)
1699 title = "100Frames";
1700 else if (fc & IEEE80211_FCTL_RETRY)
1701 title = "Retry";
1702 else if (ieee80211_is_assoc_response(fc))
1703 title = "AscRsp";
1704 else if (ieee80211_is_reassoc_response(fc))
1705 title = "RasRsp";
1706 else if (ieee80211_is_probe_response(fc)) {
1707 title = "PrbRsp";
1708 print_dump = 1; /* dump frame contents */
1709 } else if (ieee80211_is_beacon(fc)) {
1710 title = "Beacon";
1711 print_dump = 1; /* dump frame contents */
1712 } else if (ieee80211_is_atim(fc))
1713 title = "ATIM";
1714 else if (ieee80211_is_auth(fc))
1715 title = "Auth";
1716 else if (ieee80211_is_deauth(fc))
1717 title = "DeAuth";
1718 else if (ieee80211_is_disassoc(fc))
1719 title = "DisAssoc";
1720 else
1721 title = "Frame";
1722
1723 rate = iwl_rate_index_from_plcp(rate_sym);
1724 if (rate == -1)
1725 rate = 0;
1726 else
1727 rate = iwl_rates[rate].ieee / 2;
1728
1729 /* print frame summary.
1730 * MAC addresses show just the last byte (for brevity),
1731 * but you can hack it to show more, if you'd like to. */
1732 if (dataframe)
1733 IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, "
1734 "len=%u, rssi=%d, chnl=%d, rate=%u, \n",
1735 title, fc, header->addr1[5],
1736 length, rssi, channel, rate);
1737 else {
1738 /* src/dst addresses assume managed mode */
1739 IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, "
1740 "src=0x%02x, rssi=%u, tim=%lu usec, "
1741 "phy=0x%02x, chnl=%d\n",
1742 title, fc, header->addr1[5],
1743 header->addr3[5], rssi,
1744 tsf_low - priv->scan_start_tsf,
1745 phy_flags, channel);
1746 }
1747 }
1748 if (print_dump)
1749 iwl_print_hex_dump(IWL_DL_RX, data, length);
1750}
1751#endif
1752
1753static void iwl_unset_hw_setting(struct iwl_priv *priv)
1754{
1755 if (priv->hw_setting.shared_virt)
1756 pci_free_consistent(priv->pci_dev,
1757 sizeof(struct iwl_shared),
1758 priv->hw_setting.shared_virt,
1759 priv->hw_setting.shared_phys);
1760}
1761
1762/**
1763 * iwl_supported_rate_to_ie - fill in the supported rate in IE field
1764 *
1765 * return : set the bit for each supported rate insert in ie
1766 */
1767static u16 iwl_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1768 u16 basic_rate, int max_count)
1769{
1770 u16 ret_rates = 0, bit;
1771 int i;
1772 u8 *rates;
1773
1774 rates = &(ie[1]);
1775
1776 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1777 if (bit & supported_rate) {
1778 ret_rates |= bit;
1779 rates[*ie] = iwl_rates[i].ieee |
1780 ((bit & basic_rate) ? 0x80 : 0x00);
1781 *ie = *ie + 1;
1782 if (*ie >= max_count)
1783 break;
1784 }
1785 }
1786
1787 return ret_rates;
1788}
1789
1790/**
1791 * iwl_fill_probe_req - fill in all required fields and IE for probe request
1792 */
1793static u16 iwl_fill_probe_req(struct iwl_priv *priv,
1794 struct ieee80211_mgmt *frame,
1795 int left, int is_direct)
1796{
1797 int len = 0;
1798 u8 *pos = NULL;
1799 u16 ret_rates;
1800
1801 /* Make sure there is enough space for the probe request,
1802 * two mandatory IEs and the data */
1803 left -= 24;
1804 if (left < 0)
1805 return 0;
1806 len += 24;
1807
1808 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1809 memcpy(frame->da, BROADCAST_ADDR, ETH_ALEN);
1810 memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1811 memcpy(frame->bssid, BROADCAST_ADDR, ETH_ALEN);
1812 frame->seq_ctrl = 0;
1813
1814 /* fill in our indirect SSID IE */
1815 /* ...next IE... */
1816
1817 left -= 2;
1818 if (left < 0)
1819 return 0;
1820 len += 2;
1821 pos = &(frame->u.probe_req.variable[0]);
1822 *pos++ = WLAN_EID_SSID;
1823 *pos++ = 0;
1824
1825 /* fill in our direct SSID IE... */
1826 if (is_direct) {
1827 /* ...next IE... */
1828 left -= 2 + priv->essid_len;
1829 if (left < 0)
1830 return 0;
1831 /* ... fill it in... */
1832 *pos++ = WLAN_EID_SSID;
1833 *pos++ = priv->essid_len;
1834 memcpy(pos, priv->essid, priv->essid_len);
1835 pos += priv->essid_len;
1836 len += 2 + priv->essid_len;
1837 }
1838
1839 /* fill in supported rate */
1840 /* ...next IE... */
1841 left -= 2;
1842 if (left < 0)
1843 return 0;
1844 /* ... fill it in... */
1845 *pos++ = WLAN_EID_SUPP_RATES;
1846 *pos = 0;
1847 ret_rates = priv->active_rate = priv->rates_mask;
1848 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1849
1850 iwl_supported_rate_to_ie(pos, priv->active_rate,
1851 priv->active_rate_basic, left);
1852 len += 2 + *pos;
1853 pos += (*pos) + 1;
1854 ret_rates = ~ret_rates & priv->active_rate;
1855
1856 if (ret_rates == 0)
1857 goto fill_end;
1858
1859 /* fill in supported extended rate */
1860 /* ...next IE... */
1861 left -= 2;
1862 if (left < 0)
1863 return 0;
1864 /* ... fill it in... */
1865 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1866 *pos = 0;
1867 iwl_supported_rate_to_ie(pos, ret_rates, priv->active_rate_basic, left);
1868 if (*pos > 0)
1869 len += 2 + *pos;
1870
1871 fill_end:
1872 return (u16)len;
1873}
1874
1875/*
1876 * QoS support
1877*/
1878#ifdef CONFIG_IWLWIFI_QOS
1879static int iwl_send_qos_params_command(struct iwl_priv *priv,
1880 struct iwl_qosparam_cmd *qos)
1881{
1882
1883 return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1884 sizeof(struct iwl_qosparam_cmd), qos);
1885}
1886
1887static void iwl_reset_qos(struct iwl_priv *priv)
1888{
1889 u16 cw_min = 15;
1890 u16 cw_max = 1023;
1891 u8 aifs = 2;
1892 u8 is_legacy = 0;
1893 unsigned long flags;
1894 int i;
1895
1896 spin_lock_irqsave(&priv->lock, flags);
1897 priv->qos_data.qos_active = 0;
1898
1899 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
1900 if (priv->qos_data.qos_enable)
1901 priv->qos_data.qos_active = 1;
1902 if (!(priv->active_rate & 0xfff0)) {
1903 cw_min = 31;
1904 is_legacy = 1;
1905 }
1906 } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1907 if (priv->qos_data.qos_enable)
1908 priv->qos_data.qos_active = 1;
1909 } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
1910 cw_min = 31;
1911 is_legacy = 1;
1912 }
1913
1914 if (priv->qos_data.qos_active)
1915 aifs = 3;
1916
1917 priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
1918 priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
1919 priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
1920 priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
1921 priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
1922
1923 if (priv->qos_data.qos_active) {
1924 i = 1;
1925 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
1926 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
1927 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
1928 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1929 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1930
1931 i = 2;
1932 priv->qos_data.def_qos_parm.ac[i].cw_min =
1933 cpu_to_le16((cw_min + 1) / 2 - 1);
1934 priv->qos_data.def_qos_parm.ac[i].cw_max =
1935 cpu_to_le16(cw_max);
1936 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1937 if (is_legacy)
1938 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1939 cpu_to_le16(6016);
1940 else
1941 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1942 cpu_to_le16(3008);
1943 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1944
1945 i = 3;
1946 priv->qos_data.def_qos_parm.ac[i].cw_min =
1947 cpu_to_le16((cw_min + 1) / 4 - 1);
1948 priv->qos_data.def_qos_parm.ac[i].cw_max =
1949 cpu_to_le16((cw_max + 1) / 2 - 1);
1950 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1951 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1952 if (is_legacy)
1953 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1954 cpu_to_le16(3264);
1955 else
1956 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1957 cpu_to_le16(1504);
1958 } else {
1959 for (i = 1; i < 4; i++) {
1960 priv->qos_data.def_qos_parm.ac[i].cw_min =
1961 cpu_to_le16(cw_min);
1962 priv->qos_data.def_qos_parm.ac[i].cw_max =
1963 cpu_to_le16(cw_max);
1964 priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
1965 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1966 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1967 }
1968 }
1969 IWL_DEBUG_QOS("set QoS to default \n");
1970
1971 spin_unlock_irqrestore(&priv->lock, flags);
1972}
1973
1974static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
1975{
1976 unsigned long flags;
1977
1978 if (priv == NULL)
1979 return;
1980
1981 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1982 return;
1983
1984 if (!priv->qos_data.qos_enable)
1985 return;
1986
1987 spin_lock_irqsave(&priv->lock, flags);
1988 priv->qos_data.def_qos_parm.qos_flags = 0;
1989
1990 if (priv->qos_data.qos_cap.q_AP.queue_request &&
1991 !priv->qos_data.qos_cap.q_AP.txop_request)
1992 priv->qos_data.def_qos_parm.qos_flags |=
1993 QOS_PARAM_FLG_TXOP_TYPE_MSK;
1994
1995 if (priv->qos_data.qos_active)
1996 priv->qos_data.def_qos_parm.qos_flags |=
1997 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1998
1999 spin_unlock_irqrestore(&priv->lock, flags);
2000
2001 if (force || iwl_is_associated(priv)) {
2002 IWL_DEBUG_QOS("send QoS cmd with Qos active %d \n",
2003 priv->qos_data.qos_active);
2004
2005 iwl_send_qos_params_command(priv,
2006 &(priv->qos_data.def_qos_parm));
2007 }
2008}
2009
2010#endif /* CONFIG_IWLWIFI_QOS */
2011/*
2012 * Power management (not Tx power!) functions
2013 */
2014#define MSEC_TO_USEC 1024
2015
2016#define NOSLP __constant_cpu_to_le32(0)
2017#define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK
2018#define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
2019#define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
2020 __constant_cpu_to_le32(X1), \
2021 __constant_cpu_to_le32(X2), \
2022 __constant_cpu_to_le32(X3), \
2023 __constant_cpu_to_le32(X4)}
2024
2025
2026/* default power management (not Tx power) table values */
2027/* for tim 0-10 */
2028static struct iwl_power_vec_entry range_0[IWL_POWER_AC] = {
2029 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2030 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
2031 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
2032 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
2033 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
2034 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
2035};
2036
2037/* for tim > 10 */
2038static struct iwl_power_vec_entry range_1[IWL_POWER_AC] = {
2039 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2040 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
2041 SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
2042 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
2043 SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
2044 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
2045 SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
2046 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
2047 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
2048 SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
2049};
2050
2051int iwl_power_init_handle(struct iwl_priv *priv)
2052{
2053 int rc = 0, i;
2054 struct iwl_power_mgr *pow_data;
2055 int size = sizeof(struct iwl_power_vec_entry) * IWL_POWER_AC;
2056 u16 pci_pm;
2057
2058 IWL_DEBUG_POWER("Initialize power \n");
2059
2060 pow_data = &(priv->power_data);
2061
2062 memset(pow_data, 0, sizeof(*pow_data));
2063
2064 pow_data->active_index = IWL_POWER_RANGE_0;
2065 pow_data->dtim_val = 0xffff;
2066
2067 memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
2068 memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
2069
2070 rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
2071 if (rc != 0)
2072 return 0;
2073 else {
2074 struct iwl_powertable_cmd *cmd;
2075
2076 IWL_DEBUG_POWER("adjust power command flags\n");
2077
2078 for (i = 0; i < IWL_POWER_AC; i++) {
2079 cmd = &pow_data->pwr_range_0[i].cmd;
2080
2081 if (pci_pm & 0x1)
2082 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
2083 else
2084 cmd->flags |= IWL_POWER_PCI_PM_MSK;
2085 }
2086 }
2087 return rc;
2088}
2089
2090static int iwl_update_power_cmd(struct iwl_priv *priv,
2091 struct iwl_powertable_cmd *cmd, u32 mode)
2092{
2093 int rc = 0, i;
2094 u8 skip;
2095 u32 max_sleep = 0;
2096 struct iwl_power_vec_entry *range;
2097 u8 period = 0;
2098 struct iwl_power_mgr *pow_data;
2099
2100 if (mode > IWL_POWER_INDEX_5) {
2101 IWL_DEBUG_POWER("Error invalid power mode \n");
2102 return -1;
2103 }
2104 pow_data = &(priv->power_data);
2105
2106 if (pow_data->active_index == IWL_POWER_RANGE_0)
2107 range = &pow_data->pwr_range_0[0];
2108 else
2109 range = &pow_data->pwr_range_1[1];
2110
2111 memcpy(cmd, &range[mode].cmd, sizeof(struct iwl_powertable_cmd));
2112
2113#ifdef IWL_MAC80211_DISABLE
2114 if (priv->assoc_network != NULL) {
2115 unsigned long flags;
2116
2117 period = priv->assoc_network->tim.tim_period;
2118 }
2119#endif /*IWL_MAC80211_DISABLE */
2120 skip = range[mode].no_dtim;
2121
2122 if (period == 0) {
2123 period = 1;
2124 skip = 0;
2125 }
2126
2127 if (skip == 0) {
2128 max_sleep = period;
2129 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
2130 } else {
2131 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
2132 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
2133 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
2134 }
2135
2136 for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
2137 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
2138 cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
2139 }
2140
2141 IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
2142 IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
2143 IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
2144 IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2145 le32_to_cpu(cmd->sleep_interval[0]),
2146 le32_to_cpu(cmd->sleep_interval[1]),
2147 le32_to_cpu(cmd->sleep_interval[2]),
2148 le32_to_cpu(cmd->sleep_interval[3]),
2149 le32_to_cpu(cmd->sleep_interval[4]));
2150
2151 return rc;
2152}
2153
2154static int iwl_send_power_mode(struct iwl_priv *priv, u32 mode)
2155{
2156 u32 final_mode = mode;
2157 int rc;
2158 struct iwl_powertable_cmd cmd;
2159
2160 /* If on battery, set to 3,
2161 * if plugged into AC power, set to CAM ("continuosly aware mode"),
2162 * else user level */
2163 switch (mode) {
2164 case IWL_POWER_BATTERY:
2165 final_mode = IWL_POWER_INDEX_3;
2166 break;
2167 case IWL_POWER_AC:
2168 final_mode = IWL_POWER_MODE_CAM;
2169 break;
2170 default:
2171 final_mode = mode;
2172 break;
2173 }
2174
2175 iwl_update_power_cmd(priv, &cmd, final_mode);
2176
2177 rc = iwl_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
2178
2179 if (final_mode == IWL_POWER_MODE_CAM)
2180 clear_bit(STATUS_POWER_PMI, &priv->status);
2181 else
2182 set_bit(STATUS_POWER_PMI, &priv->status);
2183
2184 return rc;
2185}
2186
2187int iwl_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
2188{
2189 /* Filter incoming packets to determine if they are targeted toward
2190 * this network, discarding packets coming from ourselves */
2191 switch (priv->iw_mode) {
2192 case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
2193 /* packets from our adapter are dropped (echo) */
2194 if (!compare_ether_addr(header->addr2, priv->mac_addr))
2195 return 0;
2196 /* {broad,multi}cast packets to our IBSS go through */
2197 if (is_multicast_ether_addr(header->addr1))
2198 return !compare_ether_addr(header->addr3, priv->bssid);
2199 /* packets to our adapter go through */
2200 return !compare_ether_addr(header->addr1, priv->mac_addr);
2201 case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
2202 /* packets from our adapter are dropped (echo) */
2203 if (!compare_ether_addr(header->addr3, priv->mac_addr))
2204 return 0;
2205 /* {broad,multi}cast packets to our BSS go through */
2206 if (is_multicast_ether_addr(header->addr1))
2207 return !compare_ether_addr(header->addr2, priv->bssid);
2208 /* packets to our adapter go through */
2209 return !compare_ether_addr(header->addr1, priv->mac_addr);
2210 }
2211
2212 return 1;
2213}
2214
2215#define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2216
2217const char *iwl_get_tx_fail_reason(u32 status)
2218{
2219 switch (status & TX_STATUS_MSK) {
2220 case TX_STATUS_SUCCESS:
2221 return "SUCCESS";
2222 TX_STATUS_ENTRY(SHORT_LIMIT);
2223 TX_STATUS_ENTRY(LONG_LIMIT);
2224 TX_STATUS_ENTRY(FIFO_UNDERRUN);
2225 TX_STATUS_ENTRY(MGMNT_ABORT);
2226 TX_STATUS_ENTRY(NEXT_FRAG);
2227 TX_STATUS_ENTRY(LIFE_EXPIRE);
2228 TX_STATUS_ENTRY(DEST_PS);
2229 TX_STATUS_ENTRY(ABORTED);
2230 TX_STATUS_ENTRY(BT_RETRY);
2231 TX_STATUS_ENTRY(STA_INVALID);
2232 TX_STATUS_ENTRY(FRAG_DROPPED);
2233 TX_STATUS_ENTRY(TID_DISABLE);
2234 TX_STATUS_ENTRY(FRAME_FLUSHED);
2235 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
2236 TX_STATUS_ENTRY(TX_LOCKED);
2237 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
2238 }
2239
2240 return "UNKNOWN";
2241}
2242
2243/**
2244 * iwl_scan_cancel - Cancel any currently executing HW scan
2245 *
2246 * NOTE: priv->mutex is not required before calling this function
2247 */
2248static int iwl_scan_cancel(struct iwl_priv *priv)
2249{
2250 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
2251 clear_bit(STATUS_SCANNING, &priv->status);
2252 return 0;
2253 }
2254
2255 if (test_bit(STATUS_SCANNING, &priv->status)) {
2256 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2257 IWL_DEBUG_SCAN("Queuing scan abort.\n");
2258 set_bit(STATUS_SCAN_ABORTING, &priv->status);
2259 queue_work(priv->workqueue, &priv->abort_scan);
2260
2261 } else
2262 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2263
2264 return test_bit(STATUS_SCANNING, &priv->status);
2265 }
2266
2267 return 0;
2268}
2269
2270/**
2271 * iwl_scan_cancel_timeout - Cancel any currently executing HW scan
2272 * @ms: amount of time to wait (in milliseconds) for scan to abort
2273 *
2274 * NOTE: priv->mutex must be held before calling this function
2275 */
2276static int iwl_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
2277{
2278 unsigned long now = jiffies;
2279 int ret;
2280
2281 ret = iwl_scan_cancel(priv);
2282 if (ret && ms) {
2283 mutex_unlock(&priv->mutex);
2284 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2285 test_bit(STATUS_SCANNING, &priv->status))
2286 msleep(1);
2287 mutex_lock(&priv->mutex);
2288
2289 return test_bit(STATUS_SCANNING, &priv->status);
2290 }
2291
2292 return ret;
2293}
2294
2295static void iwl_sequence_reset(struct iwl_priv *priv)
2296{
2297 /* Reset ieee stats */
2298
2299 /* We don't reset the net_device_stats (ieee->stats) on
2300 * re-association */
2301
2302 priv->last_seq_num = -1;
2303 priv->last_frag_num = -1;
2304 priv->last_packet_time = 0;
2305
2306 iwl_scan_cancel(priv);
2307}
2308
2309#define MAX_UCODE_BEACON_INTERVAL 1024
2310#define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
2311
2312static __le16 iwl_adjust_beacon_interval(u16 beacon_val)
2313{
2314 u16 new_val = 0;
2315 u16 beacon_factor = 0;
2316
2317 beacon_factor =
2318 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2319 / MAX_UCODE_BEACON_INTERVAL;
2320 new_val = beacon_val / beacon_factor;
2321
2322 return cpu_to_le16(new_val);
2323}
2324
2325static void iwl_setup_rxon_timing(struct iwl_priv *priv)
2326{
2327 u64 interval_tm_unit;
2328 u64 tsf, result;
2329 unsigned long flags;
2330 struct ieee80211_conf *conf = NULL;
2331 u16 beacon_int = 0;
2332
2333 conf = ieee80211_get_hw_conf(priv->hw);
2334
2335 spin_lock_irqsave(&priv->lock, flags);
2336 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2337 priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2338
2339 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2340
2341 tsf = priv->timestamp1;
2342 tsf = ((tsf << 32) | priv->timestamp0);
2343
2344 beacon_int = priv->beacon_int;
2345 spin_unlock_irqrestore(&priv->lock, flags);
2346
2347 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
2348 if (beacon_int == 0) {
2349 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2350 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2351 } else {
2352 priv->rxon_timing.beacon_interval =
2353 cpu_to_le16(beacon_int);
2354 priv->rxon_timing.beacon_interval =
2355 iwl_adjust_beacon_interval(
2356 le16_to_cpu(priv->rxon_timing.beacon_interval));
2357 }
2358
2359 priv->rxon_timing.atim_window = 0;
2360 } else {
2361 priv->rxon_timing.beacon_interval =
2362 iwl_adjust_beacon_interval(conf->beacon_int);
2363 /* TODO: we need to get atim_window from upper stack
2364 * for now we set to 0 */
2365 priv->rxon_timing.atim_window = 0;
2366 }
2367
2368 interval_tm_unit =
2369 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2370 result = do_div(tsf, interval_tm_unit);
2371 priv->rxon_timing.beacon_init_val =
2372 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2373
2374 IWL_DEBUG_ASSOC
2375 ("beacon interval %d beacon timer %d beacon tim %d\n",
2376 le16_to_cpu(priv->rxon_timing.beacon_interval),
2377 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2378 le16_to_cpu(priv->rxon_timing.atim_window));
2379}
2380
2381static int iwl_scan_initiate(struct iwl_priv *priv)
2382{
2383 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2384 IWL_ERROR("APs don't scan.\n");
2385 return 0;
2386 }
2387
2388 if (!iwl_is_ready_rf(priv)) {
2389 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2390 return -EIO;
2391 }
2392
2393 if (test_bit(STATUS_SCANNING, &priv->status)) {
2394 IWL_DEBUG_SCAN("Scan already in progress.\n");
2395 return -EAGAIN;
2396 }
2397
2398 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2399 IWL_DEBUG_SCAN("Scan request while abort pending. "
2400 "Queuing.\n");
2401 return -EAGAIN;
2402 }
2403
2404 IWL_DEBUG_INFO("Starting scan...\n");
2405 priv->scan_bands = 2;
2406 set_bit(STATUS_SCANNING, &priv->status);
2407 priv->scan_start = jiffies;
2408 priv->scan_pass_start = priv->scan_start;
2409
2410 queue_work(priv->workqueue, &priv->request_scan);
2411
2412 return 0;
2413}
2414
2415static int iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
2416{
2417 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
2418
2419 if (hw_decrypt)
2420 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2421 else
2422 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2423
2424 return 0;
2425}
2426
2427static void iwl_set_flags_for_phymode(struct iwl_priv *priv, u8 phymode)
2428{
2429 if (phymode == MODE_IEEE80211A) {
2430 priv->staging_rxon.flags &=
2431 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2432 | RXON_FLG_CCK_MSK);
2433 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2434 } else {
2435 /* Copied from iwl_bg_post_associate() */
2436 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2437 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2438 else
2439 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2440
2441 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2442 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2443
2444 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2445 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2446 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2447 }
2448}
2449
2450/*
2451 * initilize rxon structure with default values fromm eeprom
2452 */
2453static void iwl_connection_init_rx_config(struct iwl_priv *priv)
2454{
2455 const struct iwl_channel_info *ch_info;
2456
2457 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2458
2459 switch (priv->iw_mode) {
2460 case IEEE80211_IF_TYPE_AP:
2461 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2462 break;
2463
2464 case IEEE80211_IF_TYPE_STA:
2465 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2466 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2467 break;
2468
2469 case IEEE80211_IF_TYPE_IBSS:
2470 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2471 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2472 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2473 RXON_FILTER_ACCEPT_GRP_MSK;
2474 break;
2475
2476 case IEEE80211_IF_TYPE_MNTR:
2477 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2478 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2479 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2480 break;
2481 }
2482
2483#if 0
2484 /* TODO: Figure out when short_preamble would be set and cache from
2485 * that */
2486 if (!hw_to_local(priv->hw)->short_preamble)
2487 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2488 else
2489 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2490#endif
2491
2492 ch_info = iwl_get_channel_info(priv, priv->phymode,
2493 le16_to_cpu(priv->staging_rxon.channel));
2494
2495 if (!ch_info)
2496 ch_info = &priv->channel_info[0];
2497
2498 /*
2499 * in some case A channels are all non IBSS
2500 * in this case force B/G channel
2501 */
2502 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2503 !(is_channel_ibss(ch_info)))
2504 ch_info = &priv->channel_info[0];
2505
2506 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2507 if (is_channel_a_band(ch_info))
2508 priv->phymode = MODE_IEEE80211A;
2509 else
2510 priv->phymode = MODE_IEEE80211G;
2511
2512 iwl_set_flags_for_phymode(priv, priv->phymode);
2513
2514 priv->staging_rxon.ofdm_basic_rates =
2515 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2516 priv->staging_rxon.cck_basic_rates =
2517 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2518}
2519
2520static int iwl_set_mode(struct iwl_priv *priv, int mode)
2521{
2522 if (!iwl_is_ready_rf(priv))
2523 return -EAGAIN;
2524
2525 if (mode == IEEE80211_IF_TYPE_IBSS) {
2526 const struct iwl_channel_info *ch_info;
2527
2528 ch_info = iwl_get_channel_info(priv,
2529 priv->phymode,
2530 le16_to_cpu(priv->staging_rxon.channel));
2531
2532 if (!ch_info || !is_channel_ibss(ch_info)) {
2533 IWL_ERROR("channel %d not IBSS channel\n",
2534 le16_to_cpu(priv->staging_rxon.channel));
2535 return -EINVAL;
2536 }
2537 }
2538
2539 cancel_delayed_work(&priv->scan_check);
2540 if (iwl_scan_cancel_timeout(priv, 100)) {
2541 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2542 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2543 return -EAGAIN;
2544 }
2545
2546 priv->iw_mode = mode;
2547
2548 iwl_connection_init_rx_config(priv);
2549 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2550
2551 iwl_clear_stations_table(priv);
2552
2553 iwl_commit_rxon(priv);
2554
2555 return 0;
2556}
2557
2558static void iwl_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
2559 struct ieee80211_tx_control *ctl,
2560 struct iwl_cmd *cmd,
2561 struct sk_buff *skb_frag,
2562 int last_frag)
2563{
2564 struct iwl_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo;
2565
2566 switch (keyinfo->alg) {
2567 case ALG_CCMP:
2568 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2569 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2570 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2571 break;
2572
2573 case ALG_TKIP:
2574#if 0
2575 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2576
2577 if (last_frag)
2578 memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2579 8);
2580 else
2581 memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2582#endif
2583 break;
2584
2585 case ALG_WEP:
2586 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2587 (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2588
2589 if (keyinfo->keylen == 13)
2590 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2591
2592 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2593
2594 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2595 "with key %d\n", ctl->key_idx);
2596 break;
2597
2598 case ALG_NONE:
2599 IWL_DEBUG_TX("Tx packet in the clear (encrypt requested).\n");
2600 break;
2601
2602 default:
2603 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2604 break;
2605 }
2606}
2607
2608/*
2609 * handle build REPLY_TX command notification.
2610 */
2611static void iwl_build_tx_cmd_basic(struct iwl_priv *priv,
2612 struct iwl_cmd *cmd,
2613 struct ieee80211_tx_control *ctrl,
2614 struct ieee80211_hdr *hdr,
2615 int is_unicast, u8 std_id)
2616{
2617 __le16 *qc;
2618 u16 fc = le16_to_cpu(hdr->frame_control);
2619 __le32 tx_flags = cmd->cmd.tx.tx_flags;
2620
2621 cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2622 if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2623 tx_flags |= TX_CMD_FLG_ACK_MSK;
2624 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2625 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2626 if (ieee80211_is_probe_response(fc) &&
2627 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2628 tx_flags |= TX_CMD_FLG_TSF_MSK;
2629 } else {
2630 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2631 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2632 }
2633
2634 cmd->cmd.tx.sta_id = std_id;
2635 if (ieee80211_get_morefrag(hdr))
2636 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2637
2638 qc = ieee80211_get_qos_ctrl(hdr);
2639 if (qc) {
2640 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2641 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2642 } else
2643 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2644
2645 if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2646 tx_flags |= TX_CMD_FLG_RTS_MSK;
2647 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2648 } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2649 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2650 tx_flags |= TX_CMD_FLG_CTS_MSK;
2651 }
2652
2653 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2654 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2655
2656 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2657 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2658 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2659 (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2660 cmd->cmd.tx.timeout.pm_frame_timeout =
2661 cpu_to_le16(3);
2662 else
2663 cmd->cmd.tx.timeout.pm_frame_timeout =
2664 cpu_to_le16(2);
2665 } else
2666 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2667
2668 cmd->cmd.tx.driver_txop = 0;
2669 cmd->cmd.tx.tx_flags = tx_flags;
2670 cmd->cmd.tx.next_frame_len = 0;
2671}
2672
2673static int iwl_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
2674{
2675 int sta_id;
2676 u16 fc = le16_to_cpu(hdr->frame_control);
2677
2678 /* If this frame is broadcast or not data then use the broadcast
2679 * station id */
2680 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2681 is_multicast_ether_addr(hdr->addr1))
2682 return priv->hw_setting.bcast_sta_id;
2683
2684 switch (priv->iw_mode) {
2685
2686 /* If this frame is part of a BSS network (we're a station), then
2687 * we use the AP's station id */
2688 case IEEE80211_IF_TYPE_STA:
2689 return IWL_AP_ID;
2690
2691 /* If we are an AP, then find the station, or use BCAST */
2692 case IEEE80211_IF_TYPE_AP:
2693 sta_id = iwl_hw_find_station(priv, hdr->addr1);
2694 if (sta_id != IWL_INVALID_STATION)
2695 return sta_id;
2696 return priv->hw_setting.bcast_sta_id;
2697
2698 /* If this frame is part of a IBSS network, then we use the
2699 * target specific station id */
0795af57
JP		 2700 case IEEE80211_IF_TYPE_IBSS: {
2701 DECLARE_MAC_BUF(mac);
2702
b481de9c
ZY		 2703 sta_id = iwl_hw_find_station(priv, hdr->addr1);
2704 if (sta_id != IWL_INVALID_STATION)
2705 return sta_id;
2706
2707 sta_id = iwl_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
2708
2709 if (sta_id != IWL_INVALID_STATION)
2710 return sta_id;
2711
0795af57 2712 IWL_DEBUG_DROP("Station %s not in station map. "
b481de9c 2713 "Defaulting to broadcast...\n",
0795af57 2714 print_mac(mac, hdr->addr1));
b481de9c
ZY		 2715 iwl_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2716 return priv->hw_setting.bcast_sta_id;
0795af57 2717 }
b481de9c
ZY		 2718 default:
2719 IWL_WARNING("Unkown mode of operation: %d", priv->iw_mode);
2720 return priv->hw_setting.bcast_sta_id;
2721 }
2722}
2723
2724/*
2725 * start REPLY_TX command process
2726 */
2727static int iwl_tx_skb(struct iwl_priv *priv,
2728 struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2729{
2730 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2731 struct iwl_tfd_frame *tfd;
2732 u32 *control_flags;
2733 int txq_id = ctl->queue;
2734 struct iwl_tx_queue *txq = NULL;
2735 struct iwl_queue *q = NULL;
2736 dma_addr_t phys_addr;
2737 dma_addr_t txcmd_phys;
2738 struct iwl_cmd *out_cmd = NULL;
2739 u16 len, idx, len_org;
2740 u8 id, hdr_len, unicast;
2741 u8 sta_id;
2742 u16 seq_number = 0;
2743 u16 fc;
2744 __le16 *qc;
2745 u8 wait_write_ptr = 0;
2746 unsigned long flags;
2747 int rc;
2748
2749 spin_lock_irqsave(&priv->lock, flags);
2750 if (iwl_is_rfkill(priv)) {
2751 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2752 goto drop_unlock;
2753 }
2754
2755 if (!priv->interface_id) {
2756 IWL_DEBUG_DROP("Dropping - !priv->interface_id\n");
2757 goto drop_unlock;
2758 }
2759
2760 if ((ctl->tx_rate & 0xFF) == IWL_INVALID_RATE) {
2761 IWL_ERROR("ERROR: No TX rate available.\n");
2762 goto drop_unlock;
2763 }
2764
2765 unicast = !is_multicast_ether_addr(hdr->addr1);
2766 id = 0;
2767
2768 fc = le16_to_cpu(hdr->frame_control);
2769
2770#ifdef CONFIG_IWLWIFI_DEBUG
2771 if (ieee80211_is_auth(fc))
2772 IWL_DEBUG_TX("Sending AUTH frame\n");
2773 else if (ieee80211_is_assoc_request(fc))
2774 IWL_DEBUG_TX("Sending ASSOC frame\n");
2775 else if (ieee80211_is_reassoc_request(fc))
2776 IWL_DEBUG_TX("Sending REASSOC frame\n");
2777#endif
2778
2779 if (!iwl_is_associated(priv) &&
2780 ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) {
2781 IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n");
2782 goto drop_unlock;
2783 }
2784
2785 spin_unlock_irqrestore(&priv->lock, flags);
2786
2787 hdr_len = ieee80211_get_hdrlen(fc);
2788 sta_id = iwl_get_sta_id(priv, hdr);
2789 if (sta_id == IWL_INVALID_STATION) {
0795af57
JP		 2790 DECLARE_MAC_BUF(mac);
2791
2792 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2793 print_mac(mac, hdr->addr1));
b481de9c
ZY		 2794 goto drop;
2795 }
2796
2797 IWL_DEBUG_RATE("station Id %d\n", sta_id);
2798
2799 qc = ieee80211_get_qos_ctrl(hdr);
2800 if (qc) {
2801 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2802 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2803 IEEE80211_SCTL_SEQ;
2804 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2805 (hdr->seq_ctrl &
2806 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2807 seq_number += 0x10;
2808 }
2809 txq = &priv->txq[txq_id];
2810 q = &txq->q;
2811
2812 spin_lock_irqsave(&priv->lock, flags);
2813
2814 tfd = &txq->bd[q->first_empty];
2815 memset(tfd, 0, sizeof(*tfd));
2816 control_flags = (u32 *) tfd;
2817 idx = get_cmd_index(q, q->first_empty, 0);
2818
2819 memset(&(txq->txb[q->first_empty]), 0, sizeof(struct iwl_tx_info));
2820 txq->txb[q->first_empty].skb[0] = skb;
2821 memcpy(&(txq->txb[q->first_empty].status.control),
2822 ctl, sizeof(struct ieee80211_tx_control));
2823 out_cmd = &txq->cmd[idx];
2824 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2825 memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2826 out_cmd->hdr.cmd = REPLY_TX;
2827 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2828 INDEX_TO_SEQ(q->first_empty)));
2829 /* copy frags header */
2830 memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2831
2832 /* hdr = (struct ieee80211_hdr *)out_cmd->cmd.tx.hdr; */
2833 len = priv->hw_setting.tx_cmd_len +
2834 sizeof(struct iwl_cmd_header) + hdr_len;
2835
2836 len_org = len;
2837 len = (len + 3) & ~3;
2838
2839 if (len_org != len)
2840 len_org = 1;
2841 else
2842 len_org = 0;
2843
2844 txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl_cmd) * idx +
2845 offsetof(struct iwl_cmd, hdr);
2846
2847 iwl_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2848
2849 if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
2850 iwl_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
2851
2852 /* 802.11 null functions have no payload... */
2853 len = skb->len - hdr_len;
2854 if (len) {
2855 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2856 len, PCI_DMA_TODEVICE);
2857 iwl_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2858 }
2859
2860 /* If there is no payload, then only one TFD is used */
2861 if (!len)
2862 *control_flags = TFD_CTL_COUNT_SET(1);
2863 else
2864 *control_flags = TFD_CTL_COUNT_SET(2) |
2865 TFD_CTL_PAD_SET(U32_PAD(len));
2866
2867 len = (u16)skb->len;
2868 out_cmd->cmd.tx.len = cpu_to_le16(len);
2869
2870 /* TODO need this for burst mode later on */
2871 iwl_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
2872
2873 /* set is_hcca to 0; it probably will never be implemented */
2874 iwl_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
2875
2876 out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
2877 out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
2878
2879 if (!ieee80211_get_morefrag(hdr)) {
2880 txq->need_update = 1;
2881 if (qc) {
2882 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2883 priv->stations[sta_id].tid[tid].seq_number = seq_number;
2884 }
2885 } else {
2886 wait_write_ptr = 1;
2887 txq->need_update = 0;
2888 }
2889
2890 iwl_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2891 sizeof(out_cmd->cmd.tx));
2892
2893 iwl_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2894 ieee80211_get_hdrlen(fc));
2895
2896 q->first_empty = iwl_queue_inc_wrap(q->first_empty, q->n_bd);
2897 rc = iwl_tx_queue_update_write_ptr(priv, txq);
2898 spin_unlock_irqrestore(&priv->lock, flags);
2899
2900 if (rc)
2901 return rc;
2902
2903 if ((iwl_queue_space(q) < q->high_mark)
2904 && priv->mac80211_registered) {
2905 if (wait_write_ptr) {
2906 spin_lock_irqsave(&priv->lock, flags);
2907 txq->need_update = 1;
2908 iwl_tx_queue_update_write_ptr(priv, txq);
2909 spin_unlock_irqrestore(&priv->lock, flags);
2910 }
2911
2912 ieee80211_stop_queue(priv->hw, ctl->queue);
2913 }
2914
2915 return 0;
2916
2917drop_unlock:
2918 spin_unlock_irqrestore(&priv->lock, flags);
2919drop:
2920 return -1;
2921}
2922
2923static void iwl_set_rate(struct iwl_priv *priv)
2924{
2925 const struct ieee80211_hw_mode *hw = NULL;
2926 struct ieee80211_rate *rate;
2927 int i;
2928
2929 hw = iwl_get_hw_mode(priv, priv->phymode);
2930
2931 priv->active_rate = 0;
2932 priv->active_rate_basic = 0;
2933
2934 IWL_DEBUG_RATE("Setting rates for 802.11%c\n",
2935 hw->mode == MODE_IEEE80211A ?
2936 'a' : ((hw->mode == MODE_IEEE80211B) ? 'b' : 'g'));
2937
2938 for (i = 0; i < hw->num_rates; i++) {
2939 rate = &(hw->rates[i]);
2940 if ((rate->val < IWL_RATE_COUNT) &&
2941 (rate->flags & IEEE80211_RATE_SUPPORTED)) {
2942 IWL_DEBUG_RATE("Adding rate index %d (plcp %d)%s\n",
2943 rate->val, iwl_rates[rate->val].plcp,
2944 (rate->flags & IEEE80211_RATE_BASIC) ?
2945 "*" : "");
2946 priv->active_rate |= (1 << rate->val);
2947 if (rate->flags & IEEE80211_RATE_BASIC)
2948 priv->active_rate_basic |= (1 << rate->val);
2949 } else
2950 IWL_DEBUG_RATE("Not adding rate %d (plcp %d)\n",
2951 rate->val, iwl_rates[rate->val].plcp);
2952 }
2953
2954 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2955 priv->active_rate, priv->active_rate_basic);
2956
2957 /*
2958 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2959 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2960 * OFDM
2961 */
2962 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2963 priv->staging_rxon.cck_basic_rates =
2964 ((priv->active_rate_basic &
2965 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2966 else
2967 priv->staging_rxon.cck_basic_rates =
2968 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2969
2970 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2971 priv->staging_rxon.ofdm_basic_rates =
2972 ((priv->active_rate_basic &
2973 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2974 IWL_FIRST_OFDM_RATE) & 0xFF;
2975 else
2976 priv->staging_rxon.ofdm_basic_rates =
2977 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2978}
2979
2980static void iwl_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
2981{
2982 unsigned long flags;
2983
2984 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2985 return;
2986
2987 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2988 disable_radio ? "OFF" : "ON");
2989
2990 if (disable_radio) {
2991 iwl_scan_cancel(priv);
2992 /* FIXME: This is a workaround for AP */
2993 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
2994 spin_lock_irqsave(&priv->lock, flags);
2995 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2996 CSR_UCODE_SW_BIT_RFKILL);
2997 spin_unlock_irqrestore(&priv->lock, flags);
2998 iwl_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
2999 set_bit(STATUS_RF_KILL_SW, &priv->status);
3000 }
3001 return;
3002 }
3003
3004 spin_lock_irqsave(&priv->lock, flags);
3005 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3006
3007 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3008 spin_unlock_irqrestore(&priv->lock, flags);
3009
3010 /* wake up ucode */
3011 msleep(10);
3012
3013 spin_lock_irqsave(&priv->lock, flags);
3014 iwl_read32(priv, CSR_UCODE_DRV_GP1);
3015 if (!iwl_grab_restricted_access(priv))
3016 iwl_release_restricted_access(priv);
3017 spin_unlock_irqrestore(&priv->lock, flags);
3018
3019 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
3020 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3021 "disabled by HW switch\n");
3022 return;
3023 }
3024
3025 queue_work(priv->workqueue, &priv->restart);
3026 return;
3027}
3028
3029void iwl_set_decrypted_flag(struct iwl_priv *priv, struct sk_buff *skb,
3030 u32 decrypt_res, struct ieee80211_rx_status *stats)
3031{
3032 u16 fc =
3033 le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
3034
3035 if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
3036 return;
3037
3038 if (!(fc & IEEE80211_FCTL_PROTECTED))
3039 return;
3040
3041 IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
3042 switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
3043 case RX_RES_STATUS_SEC_TYPE_TKIP:
3044 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3045 RX_RES_STATUS_BAD_ICV_MIC)
3046 stats->flag |= RX_FLAG_MMIC_ERROR;
3047 case RX_RES_STATUS_SEC_TYPE_WEP:
3048 case RX_RES_STATUS_SEC_TYPE_CCMP:
3049 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3050 RX_RES_STATUS_DECRYPT_OK) {
3051 IWL_DEBUG_RX("hw decrypt successfully!!!\n");
3052 stats->flag |= RX_FLAG_DECRYPTED;
3053 }
3054 break;
3055
3056 default:
3057 break;
3058 }
3059}
3060
3061void iwl_handle_data_packet_monitor(struct iwl_priv *priv,
3062 struct iwl_rx_mem_buffer *rxb,
3063 void *data, short len,
3064 struct ieee80211_rx_status *stats,
3065 u16 phy_flags)
3066{
3067 struct iwl_rt_rx_hdr *iwl_rt;
3068
3069 /* First cache any information we need before we overwrite
3070 * the information provided in the skb from the hardware */
3071 s8 signal = stats->ssi;
3072 s8 noise = 0;
3073 int rate = stats->rate;
3074 u64 tsf = stats->mactime;
3075 __le16 phy_flags_hw = cpu_to_le16(phy_flags);
3076
3077 /* We received data from the HW, so stop the watchdog */
3078 if (len > IWL_RX_BUF_SIZE - sizeof(*iwl_rt)) {
3079 IWL_DEBUG_DROP("Dropping too large packet in monitor\n");
3080 return;
3081 }
3082
3083 /* copy the frame data to write after where the radiotap header goes */
3084 iwl_rt = (void *)rxb->skb->data;
3085 memmove(iwl_rt->payload, data, len);
3086
3087 iwl_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION;
3088 iwl_rt->rt_hdr.it_pad = 0; /* always good to zero */
3089
3090 /* total header + data */
3091 iwl_rt->rt_hdr.it_len = cpu_to_le16(sizeof(*iwl_rt));
3092
3093 /* Set the size of the skb to the size of the frame */
3094 skb_put(rxb->skb, sizeof(*iwl_rt) + len);
3095
3096 /* Big bitfield of all the fields we provide in radiotap */
3097 iwl_rt->rt_hdr.it_present =
3098 cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT) |
3099 (1 << IEEE80211_RADIOTAP_FLAGS) |
3100 (1 << IEEE80211_RADIOTAP_RATE) |
3101 (1 << IEEE80211_RADIOTAP_CHANNEL) |
3102 (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) |
3103 (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) |
3104 (1 << IEEE80211_RADIOTAP_ANTENNA));
3105
3106 /* Zero the flags, we'll add to them as we go */
3107 iwl_rt->rt_flags = 0;
3108
3109 iwl_rt->rt_tsf = cpu_to_le64(tsf);
3110
3111 /* Convert to dBm */
3112 iwl_rt->rt_dbmsignal = signal;
3113 iwl_rt->rt_dbmnoise = noise;
3114
3115 /* Convert the channel frequency and set the flags */
3116 iwl_rt->rt_channelMHz = cpu_to_le16(stats->freq);
3117 if (!(phy_flags_hw & RX_RES_PHY_FLAGS_BAND_24_MSK))
3118 iwl_rt->rt_chbitmask =
3119 cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ));
3120 else if (phy_flags_hw & RX_RES_PHY_FLAGS_MOD_CCK_MSK)
3121 iwl_rt->rt_chbitmask =
3122 cpu_to_le16((IEEE80211_CHAN_CCK | IEEE80211_CHAN_2GHZ));
3123 else /* 802.11g */
3124 iwl_rt->rt_chbitmask =
3125 cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_2GHZ));
3126
3127 rate = iwl_rate_index_from_plcp(rate);
3128 if (rate == -1)
3129 iwl_rt->rt_rate = 0;
3130 else
3131 iwl_rt->rt_rate = iwl_rates[rate].ieee;
3132
3133 /* antenna number */
3134 iwl_rt->rt_antenna =
3135 le16_to_cpu(phy_flags_hw & RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4;
3136
3137 /* set the preamble flag if we have it */
3138 if (phy_flags_hw & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
3139 iwl_rt->rt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3140
3141 IWL_DEBUG_RX("Rx packet of %d bytes.\n", rxb->skb->len);
3142
3143 stats->flag |= RX_FLAG_RADIOTAP;
3144 ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats);
3145 rxb->skb = NULL;
3146}
3147
3148
3149#define IWL_PACKET_RETRY_TIME HZ
3150
3151int is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
3152{
3153 u16 sc = le16_to_cpu(header->seq_ctrl);
3154 u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
3155 u16 frag = sc & IEEE80211_SCTL_FRAG;
3156 u16 *last_seq, *last_frag;
3157 unsigned long *last_time;
3158
3159 switch (priv->iw_mode) {
3160 case IEEE80211_IF_TYPE_IBSS:{
3161 struct list_head *p;
3162 struct iwl_ibss_seq *entry = NULL;
3163 u8 *mac = header->addr2;
3164 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
3165
3166 __list_for_each(p, &priv->ibss_mac_hash[index]) {
3167 entry =
3168 list_entry(p, struct iwl_ibss_seq, list);
3169 if (!compare_ether_addr(entry->mac, mac))
3170 break;
3171 }
3172 if (p == &priv->ibss_mac_hash[index]) {
3173 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
3174 if (!entry) {
3175 IWL_ERROR
3176 ("Cannot malloc new mac entry\n");
3177 return 0;
3178 }
3179 memcpy(entry->mac, mac, ETH_ALEN);
3180 entry->seq_num = seq;
3181 entry->frag_num = frag;
3182 entry->packet_time = jiffies;
3183 list_add(&entry->list,
3184 &priv->ibss_mac_hash[index]);
3185 return 0;
3186 }
3187 last_seq = &entry->seq_num;
3188 last_frag = &entry->frag_num;
3189 last_time = &entry->packet_time;
3190 break;
3191 }
3192 case IEEE80211_IF_TYPE_STA:
3193 last_seq = &priv->last_seq_num;
3194 last_frag = &priv->last_frag_num;
3195 last_time = &priv->last_packet_time;
3196 break;
3197 default:
3198 return 0;
3199 }
3200 if ((*last_seq == seq) &&
3201 time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
3202 if (*last_frag == frag)
3203 goto drop;
3204 if (*last_frag + 1 != frag)
3205 /* out-of-order fragment */
3206 goto drop;
3207 } else
3208 *last_seq = seq;
3209
3210 *last_frag = frag;
3211 *last_time = jiffies;
3212 return 0;
3213
3214 drop:
3215 return 1;
3216}
3217
3218#ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
3219
3220#include "iwl-spectrum.h"
3221
3222#define BEACON_TIME_MASK_LOW 0x00FFFFFF
3223#define BEACON_TIME_MASK_HIGH 0xFF000000
3224#define TIME_UNIT 1024
3225
3226/*
3227 * extended beacon time format
3228 * time in usec will be changed into a 32-bit value in 8:24 format
3229 * the high 1 byte is the beacon counts
3230 * the lower 3 bytes is the time in usec within one beacon interval
3231 */
3232
3233static u32 iwl_usecs_to_beacons(u32 usec, u32 beacon_interval)
3234{
3235 u32 quot;
3236 u32 rem;
3237 u32 interval = beacon_interval * 1024;
3238
3239 if (!interval || !usec)
3240 return 0;
3241
3242 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
3243 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
3244
3245 return (quot << 24) + rem;
3246}
3247
3248/* base is usually what we get from ucode with each received frame,
3249 * the same as HW timer counter counting down
3250 */
3251
3252static __le32 iwl_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
3253{
3254 u32 base_low = base & BEACON_TIME_MASK_LOW;
3255 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
3256 u32 interval = beacon_interval * TIME_UNIT;
3257 u32 res = (base & BEACON_TIME_MASK_HIGH) +
3258 (addon & BEACON_TIME_MASK_HIGH);
3259
3260 if (base_low > addon_low)
3261 res += base_low - addon_low;
3262 else if (base_low < addon_low) {
3263 res += interval + base_low - addon_low;
3264 res += (1 << 24);
3265 } else
3266 res += (1 << 24);
3267
3268 return cpu_to_le32(res);
3269}
3270
3271static int iwl_get_measurement(struct iwl_priv *priv,
3272 struct ieee80211_measurement_params *params,
3273 u8 type)
3274{
3275 struct iwl_spectrum_cmd spectrum;
3276 struct iwl_rx_packet *res;
3277 struct iwl_host_cmd cmd = {
3278 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
3279 .data = (void *)&spectrum,
3280 .meta.flags = CMD_WANT_SKB,
3281 };
3282 u32 add_time = le64_to_cpu(params->start_time);
3283 int rc;
3284 int spectrum_resp_status;
3285 int duration = le16_to_cpu(params->duration);
3286
3287 if (iwl_is_associated(priv))
3288 add_time =
3289 iwl_usecs_to_beacons(
3290 le64_to_cpu(params->start_time) - priv->last_tsf,
3291 le16_to_cpu(priv->rxon_timing.beacon_interval));
3292
3293 memset(&spectrum, 0, sizeof(spectrum));
3294
3295 spectrum.channel_count = cpu_to_le16(1);
3296 spectrum.flags =
3297 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
3298 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
3299 cmd.len = sizeof(spectrum);
3300 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
3301
3302 if (iwl_is_associated(priv))
3303 spectrum.start_time =
3304 iwl_add_beacon_time(priv->last_beacon_time,
3305 add_time,
3306 le16_to_cpu(priv->rxon_timing.beacon_interval));
3307 else
3308 spectrum.start_time = 0;
3309
3310 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
3311 spectrum.channels[0].channel = params->channel;
3312 spectrum.channels[0].type = type;
3313 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
3314 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
3315 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
3316
3317 rc = iwl_send_cmd_sync(priv, &cmd);
3318 if (rc)
3319 return rc;
3320
3321 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
3322 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
3323 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3324 rc = -EIO;
3325 }
3326
3327 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
3328 switch (spectrum_resp_status) {
3329 case 0: /* Command will be handled */
3330 if (res->u.spectrum.id != 0xff) {
3331 IWL_DEBUG_INFO
3332 ("Replaced existing measurement: %d\n",
3333 res->u.spectrum.id);
3334 priv->measurement_status &= ~MEASUREMENT_READY;
3335 }
3336 priv->measurement_status |= MEASUREMENT_ACTIVE;
3337 rc = 0;
3338 break;
3339
3340 case 1: /* Command will not be handled */
3341 rc = -EAGAIN;
3342 break;
3343 }
3344
3345 dev_kfree_skb_any(cmd.meta.u.skb);
3346
3347 return rc;
3348}
3349#endif
3350
3351static void iwl_txstatus_to_ieee(struct iwl_priv *priv,
3352 struct iwl_tx_info *tx_sta)
3353{
3354
3355 tx_sta->status.ack_signal = 0;
3356 tx_sta->status.excessive_retries = 0;
3357 tx_sta->status.queue_length = 0;
3358 tx_sta->status.queue_number = 0;
3359
3360 if (in_interrupt())
3361 ieee80211_tx_status_irqsafe(priv->hw,
3362 tx_sta->skb[0], &(tx_sta->status));
3363 else
3364 ieee80211_tx_status(priv->hw,
3365 tx_sta->skb[0], &(tx_sta->status));
3366
3367 tx_sta->skb[0] = NULL;
3368}
3369
3370/**
3371 * iwl_tx_queue_reclaim - Reclaim Tx queue entries no more used by NIC.
3372 *
3373 * When FW advances 'R' index, all entries between old and
3374 * new 'R' index need to be reclaimed. As result, some free space
3375 * forms. If there is enough free space (> low mark), wake Tx queue.
3376 */
3377int iwl_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
3378{
3379 struct iwl_tx_queue *txq = &priv->txq[txq_id];
3380 struct iwl_queue *q = &txq->q;
3381 int nfreed = 0;
3382
3383 if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
3384 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3385 "is out of range [0-%d] %d %d.\n", txq_id,
3386 index, q->n_bd, q->first_empty, q->last_used);
3387 return 0;
3388 }
3389
3390 for (index = iwl_queue_inc_wrap(index, q->n_bd);
3391 q->last_used != index;
3392 q->last_used = iwl_queue_inc_wrap(q->last_used, q->n_bd)) {
3393 if (txq_id != IWL_CMD_QUEUE_NUM) {
3394 iwl_txstatus_to_ieee(priv,
3395 &(txq->txb[txq->q.last_used]));
3396 iwl_hw_txq_free_tfd(priv, txq);
3397 } else if (nfreed > 1) {
3398 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3399 q->first_empty, q->last_used);
3400 queue_work(priv->workqueue, &priv->restart);
3401 }
3402 nfreed++;
3403 }
3404
3405 if (iwl_queue_space(q) > q->low_mark && (txq_id >= 0) &&
3406 (txq_id != IWL_CMD_QUEUE_NUM) &&
3407 priv->mac80211_registered)
3408 ieee80211_wake_queue(priv->hw, txq_id);
3409
3410
3411 return nfreed;
3412}
3413
3414static int iwl_is_tx_success(u32 status)
3415{
3416 return (status & 0xFF) == 0x1;
3417}
3418
3419/******************************************************************************
3420 *
3421 * Generic RX handler implementations
3422 *
3423 ******************************************************************************/
3424static void iwl_rx_reply_tx(struct iwl_priv *priv,
3425 struct iwl_rx_mem_buffer *rxb)
3426{
3427 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3428 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3429 int txq_id = SEQ_TO_QUEUE(sequence);
3430 int index = SEQ_TO_INDEX(sequence);
3431 struct iwl_tx_queue *txq = &priv->txq[txq_id];
3432 struct ieee80211_tx_status *tx_status;
3433 struct iwl_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3434 u32 status = le32_to_cpu(tx_resp->status);
3435
3436 if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3437 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3438 "is out of range [0-%d] %d %d\n", txq_id,
3439 index, txq->q.n_bd, txq->q.first_empty,
3440 txq->q.last_used);
3441 return;
3442 }
3443
3444 tx_status = &(txq->txb[txq->q.last_used].status);
3445
3446 tx_status->retry_count = tx_resp->failure_frame;
3447 tx_status->queue_number = status;
3448 tx_status->queue_length = tx_resp->bt_kill_count;
3449 tx_status->queue_length |= tx_resp->failure_rts;
3450
3451 tx_status->flags =
3452 iwl_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3453
3454 tx_status->control.tx_rate = iwl_rate_index_from_plcp(tx_resp->rate);
3455
3456 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) plcp rate %d retries %d\n",
3457 txq_id, iwl_get_tx_fail_reason(status), status,
3458 tx_resp->rate, tx_resp->failure_frame);
3459
3460 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3461 if (index != -1)
3462 iwl_tx_queue_reclaim(priv, txq_id, index);
3463
3464 if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3465 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
3466}
3467
3468
3469static void iwl_rx_reply_alive(struct iwl_priv *priv,
3470 struct iwl_rx_mem_buffer *rxb)
3471{
3472 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3473 struct iwl_alive_resp *palive;
3474 struct delayed_work *pwork;
3475
3476 palive = &pkt->u.alive_frame;
3477
3478 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3479 "0x%01X 0x%01X\n",
3480 palive->is_valid, palive->ver_type,
3481 palive->ver_subtype);
3482
3483 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3484 IWL_DEBUG_INFO("Initialization Alive received.\n");
3485 memcpy(&priv->card_alive_init,
3486 &pkt->u.alive_frame,
3487 sizeof(struct iwl_init_alive_resp));
3488 pwork = &priv->init_alive_start;
3489 } else {
3490 IWL_DEBUG_INFO("Runtime Alive received.\n");
3491 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3492 sizeof(struct iwl_alive_resp));
3493 pwork = &priv->alive_start;
3494 iwl_disable_events(priv);
3495 }
3496
3497 /* We delay the ALIVE response by 5ms to
3498 * give the HW RF Kill time to activate... */
3499 if (palive->is_valid == UCODE_VALID_OK)
3500 queue_delayed_work(priv->workqueue, pwork,
3501 msecs_to_jiffies(5));
3502 else
3503 IWL_WARNING("uCode did not respond OK.\n");
3504}
3505
3506static void iwl_rx_reply_add_sta(struct iwl_priv *priv,
3507 struct iwl_rx_mem_buffer *rxb)
3508{
3509 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3510
3511 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3512 return;
3513}
3514
3515static void iwl_rx_reply_error(struct iwl_priv *priv,
3516 struct iwl_rx_mem_buffer *rxb)
3517{
3518 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3519
3520 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3521 "seq 0x%04X ser 0x%08X\n",
3522 le32_to_cpu(pkt->u.err_resp.error_type),
3523 get_cmd_string(pkt->u.err_resp.cmd_id),
3524 pkt->u.err_resp.cmd_id,
3525 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3526 le32_to_cpu(pkt->u.err_resp.error_info));
3527}
3528
3529#define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3530
3531static void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
3532{
3533 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3534 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
3535 struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
3536 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3537 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3538 rxon->channel = csa->channel;
3539 priv->staging_rxon.channel = csa->channel;
3540}
3541
3542static void iwl_rx_spectrum_measure_notif(struct iwl_priv *priv,
3543 struct iwl_rx_mem_buffer *rxb)
3544{
3545#ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
3546 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3547 struct iwl_spectrum_notification *report = &(pkt->u.spectrum_notif);
3548
3549 if (!report->state) {
3550 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3551 "Spectrum Measure Notification: Start\n");
3552 return;
3553 }
3554
3555 memcpy(&priv->measure_report, report, sizeof(*report));
3556 priv->measurement_status |= MEASUREMENT_READY;
3557#endif
3558}
3559
3560static void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
3561 struct iwl_rx_mem_buffer *rxb)
3562{
3563#ifdef CONFIG_IWLWIFI_DEBUG
3564 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3565 struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
3566 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3567 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3568#endif
3569}
3570
3571static void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
3572 struct iwl_rx_mem_buffer *rxb)
3573{
3574 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3575 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3576 "notification for %s:\n",
3577 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3578 iwl_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3579}
3580
3581static void iwl_bg_beacon_update(struct work_struct *work)
3582{
3583 struct iwl_priv *priv =
3584 container_of(work, struct iwl_priv, beacon_update);
3585 struct sk_buff *beacon;
3586
3587 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3588 beacon = ieee80211_beacon_get(priv->hw, priv->interface_id, NULL);
3589
3590 if (!beacon) {
3591 IWL_ERROR("update beacon failed\n");
3592 return;
3593 }
3594
3595 mutex_lock(&priv->mutex);
3596 /* new beacon skb is allocated every time; dispose previous.*/
3597 if (priv->ibss_beacon)
3598 dev_kfree_skb(priv->ibss_beacon);
3599
3600 priv->ibss_beacon = beacon;
3601 mutex_unlock(&priv->mutex);
3602
3603 iwl_send_beacon_cmd(priv);
3604}
3605
3606static void iwl_rx_beacon_notif(struct iwl_priv *priv,
3607 struct iwl_rx_mem_buffer *rxb)
3608{
3609#ifdef CONFIG_IWLWIFI_DEBUG
3610 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3611 struct iwl_beacon_notif *beacon = &(pkt->u.beacon_status);
3612 u8 rate = beacon->beacon_notify_hdr.rate;
3613
3614 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3615 "tsf %d %d rate %d\n",
3616 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3617 beacon->beacon_notify_hdr.failure_frame,
3618 le32_to_cpu(beacon->ibss_mgr_status),
3619 le32_to_cpu(beacon->high_tsf),
3620 le32_to_cpu(beacon->low_tsf), rate);
3621#endif
3622
3623 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3624 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3625 queue_work(priv->workqueue, &priv->beacon_update);
3626}
3627
3628/* Service response to REPLY_SCAN_CMD (0x80) */
3629static void iwl_rx_reply_scan(struct iwl_priv *priv,
3630 struct iwl_rx_mem_buffer *rxb)
3631{
3632#ifdef CONFIG_IWLWIFI_DEBUG
3633 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3634 struct iwl_scanreq_notification *notif =
3635 (struct iwl_scanreq_notification *)pkt->u.raw;
3636
3637 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3638#endif
3639}
3640
3641/* Service SCAN_START_NOTIFICATION (0x82) */
3642static void iwl_rx_scan_start_notif(struct iwl_priv *priv,
3643 struct iwl_rx_mem_buffer *rxb)
3644{
3645 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3646 struct iwl_scanstart_notification *notif =
3647 (struct iwl_scanstart_notification *)pkt->u.raw;
3648 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3649 IWL_DEBUG_SCAN("Scan start: "
3650 "%d [802.11%s] "
3651 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3652 notif->channel,
3653 notif->band ? "bg" : "a",
3654 notif->tsf_high,
3655 notif->tsf_low, notif->status, notif->beacon_timer);
3656}
3657
3658/* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3659static void iwl_rx_scan_results_notif(struct iwl_priv *priv,
3660 struct iwl_rx_mem_buffer *rxb)
3661{
3662 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3663 struct iwl_scanresults_notification *notif =
3664 (struct iwl_scanresults_notification *)pkt->u.raw;
3665
3666 IWL_DEBUG_SCAN("Scan ch.res: "
3667 "%d [802.11%s] "
3668 "(TSF: 0x%08X:%08X) - %d "
3669 "elapsed=%lu usec (%dms since last)\n",
3670 notif->channel,
3671 notif->band ? "bg" : "a",
3672 le32_to_cpu(notif->tsf_high),
3673 le32_to_cpu(notif->tsf_low),
3674 le32_to_cpu(notif->statistics[0]),
3675 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3676 jiffies_to_msecs(elapsed_jiffies
3677 (priv->last_scan_jiffies, jiffies)));
3678
3679 priv->last_scan_jiffies = jiffies;
3680}
3681
3682/* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3683static void iwl_rx_scan_complete_notif(struct iwl_priv *priv,
3684 struct iwl_rx_mem_buffer *rxb)
3685{
3686 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3687 struct iwl_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3688
3689 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3690 scan_notif->scanned_channels,
3691 scan_notif->tsf_low,
3692 scan_notif->tsf_high, scan_notif->status);
3693
3694 /* The HW is no longer scanning */
3695 clear_bit(STATUS_SCAN_HW, &priv->status);
3696
3697 /* The scan completion notification came in, so kill that timer... */
3698 cancel_delayed_work(&priv->scan_check);
3699
3700 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3701 (priv->scan_bands == 2) ? "2.4" : "5.2",
3702 jiffies_to_msecs(elapsed_jiffies
3703 (priv->scan_pass_start, jiffies)));
3704
3705 /* Remove this scanned band from the list
3706 * of pending bands to scan */
3707 priv->scan_bands--;
3708
3709 /* If a request to abort was given, or the scan did not succeed
3710 * then we reset the scan state machine and terminate,
3711 * re-queuing another scan if one has been requested */
3712 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3713 IWL_DEBUG_INFO("Aborted scan completed.\n");
3714 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3715 } else {
3716 /* If there are more bands on this scan pass reschedule */
3717 if (priv->scan_bands > 0)
3718 goto reschedule;
3719 }
3720
3721 priv->last_scan_jiffies = jiffies;
3722 IWL_DEBUG_INFO("Setting scan to off\n");
3723
3724 clear_bit(STATUS_SCANNING, &priv->status);
3725
3726 IWL_DEBUG_INFO("Scan took %dms\n",
3727 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3728
3729 queue_work(priv->workqueue, &priv->scan_completed);
3730
3731 return;
3732
3733reschedule:
3734 priv->scan_pass_start = jiffies;
3735 queue_work(priv->workqueue, &priv->request_scan);
3736}
3737
3738/* Handle notification from uCode that card's power state is changing
3739 * due to software, hardware, or critical temperature RFKILL */
3740static void iwl_rx_card_state_notif(struct iwl_priv *priv,
3741 struct iwl_rx_mem_buffer *rxb)
3742{
3743 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3744 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3745 unsigned long status = priv->status;
3746
3747 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3748 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3749 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3750
3751 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
3752 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3753
3754 if (flags & HW_CARD_DISABLED)
3755 set_bit(STATUS_RF_KILL_HW, &priv->status);
3756 else
3757 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3758
3759
3760 if (flags & SW_CARD_DISABLED)
3761 set_bit(STATUS_RF_KILL_SW, &priv->status);
3762 else
3763 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3764
3765 iwl_scan_cancel(priv);
3766
3767 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3768 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3769 (test_bit(STATUS_RF_KILL_SW, &status) !=
3770 test_bit(STATUS_RF_KILL_SW, &priv->status)))
3771 queue_work(priv->workqueue, &priv->rf_kill);
3772 else
3773 wake_up_interruptible(&priv->wait_command_queue);
3774}
3775
3776/**
3777 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
3778 *
3779 * Setup the RX handlers for each of the reply types sent from the uCode
3780 * to the host.
3781 *
3782 * This function chains into the hardware specific files for them to setup
3783 * any hardware specific handlers as well.
3784 */
3785static void iwl_setup_rx_handlers(struct iwl_priv *priv)
3786{
3787 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
3788 priv->rx_handlers[REPLY_ADD_STA] = iwl_rx_reply_add_sta;
3789 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
3790 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
3791 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3792 iwl_rx_spectrum_measure_notif;
3793 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
3794 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3795 iwl_rx_pm_debug_statistics_notif;
3796 priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
3797
3798 /* NOTE: iwl_rx_statistics is different based on whether
3799 * the build is for the 3945 or the 4965. See the
3800 * corresponding implementation in iwl-XXXX.c
3801 *
3802 * The same handler is used for both the REPLY to a
3803 * discrete statistics request from the host as well as
3804 * for the periodic statistics notification from the uCode
3805 */
3806 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_hw_rx_statistics;
3807 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_hw_rx_statistics;
3808
3809 priv->rx_handlers[REPLY_SCAN_CMD] = iwl_rx_reply_scan;
3810 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl_rx_scan_start_notif;
3811 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3812 iwl_rx_scan_results_notif;
3813 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3814 iwl_rx_scan_complete_notif;
3815 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
3816 priv->rx_handlers[REPLY_TX] = iwl_rx_reply_tx;
3817
3818 /* Setup hardware specific Rx handlers */
3819 iwl_hw_rx_handler_setup(priv);
3820}
3821
3822/**
3823 * iwl_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3824 * @rxb: Rx buffer to reclaim
3825 *
3826 * If an Rx buffer has an async callback associated with it the callback
3827 * will be executed. The attached skb (if present) will only be freed
3828 * if the callback returns 1
3829 */
3830static void iwl_tx_cmd_complete(struct iwl_priv *priv,
3831 struct iwl_rx_mem_buffer *rxb)
3832{
3833 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
3834 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3835 int txq_id = SEQ_TO_QUEUE(sequence);
3836 int index = SEQ_TO_INDEX(sequence);
3837 int huge = sequence & SEQ_HUGE_FRAME;
3838 int cmd_index;
3839 struct iwl_cmd *cmd;
3840
3841 /* If a Tx command is being handled and it isn't in the actual
3842 * command queue then there a command routing bug has been introduced
3843 * in the queue management code. */
3844 if (txq_id != IWL_CMD_QUEUE_NUM)
3845 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
3846 txq_id, pkt->hdr.cmd);
3847 BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3848
3849 cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
3850 cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3851
3852 /* Input error checking is done when commands are added to queue. */
3853 if (cmd->meta.flags & CMD_WANT_SKB) {
3854 cmd->meta.source->u.skb = rxb->skb;
3855 rxb->skb = NULL;
3856 } else if (cmd->meta.u.callback &&
3857 !cmd->meta.u.callback(priv, cmd, rxb->skb))
3858 rxb->skb = NULL;
3859
3860 iwl_tx_queue_reclaim(priv, txq_id, index);
3861
3862 if (!(cmd->meta.flags & CMD_ASYNC)) {
3863 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3864 wake_up_interruptible(&priv->wait_command_queue);
3865 }
3866}
3867
3868/************************** RX-FUNCTIONS ****************************/
3869/*
3870 * Rx theory of operation
3871 *
3872 * The host allocates 32 DMA target addresses and passes the host address
3873 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
3874 * 0 to 31
3875 *
3876 * Rx Queue Indexes
3877 * The host/firmware share two index registers for managing the Rx buffers.
3878 *
3879 * The READ index maps to the first position that the firmware may be writing
3880 * to -- the driver can read up to (but not including) this position and get
3881 * good data.
3882 * The READ index is managed by the firmware once the card is enabled.
3883 *
3884 * The WRITE index maps to the last position the driver has read from -- the
3885 * position preceding WRITE is the last slot the firmware can place a packet.
3886 *
3887 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3888 * WRITE = READ.
3889 *
3890 * During initialization the host sets up the READ queue position to the first
3891 * INDEX position, and WRITE to the last (READ - 1 wrapped)
3892 *
3893 * When the firmware places a packet in a buffer it will advance the READ index
3894 * and fire the RX interrupt. The driver can then query the READ index and
3895 * process as many packets as possible, moving the WRITE index forward as it
3896 * resets the Rx queue buffers with new memory.
3897 *
3898 * The management in the driver is as follows:
3899 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
3900 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
3901 * to replensish the iwl->rxq->rx_free.
3902 * + In iwl_rx_replenish (scheduled) if 'processed' != 'read' then the
3903 * iwl->rxq is replenished and the READ INDEX is updated (updating the
3904 * 'processed' and 'read' driver indexes as well)
3905 * + A received packet is processed and handed to the kernel network stack,
3906 * detached from the iwl->rxq. The driver 'processed' index is updated.
3907 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3908 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3909 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
3910 * were enough free buffers and RX_STALLED is set it is cleared.
3911 *
3912 *
3913 * Driver sequence:
3914 *
3915 * iwl_rx_queue_alloc() Allocates rx_free
3916 * iwl_rx_replenish() Replenishes rx_free list from rx_used, and calls
3917 * iwl_rx_queue_restock
3918 * iwl_rx_queue_restock() Moves available buffers from rx_free into Rx
3919 * queue, updates firmware pointers, and updates
3920 * the WRITE index. If insufficient rx_free buffers
3921 * are available, schedules iwl_rx_replenish
3922 *
3923 * -- enable interrupts --
3924 * ISR - iwl_rx() Detach iwl_rx_mem_buffers from pool up to the
3925 * READ INDEX, detaching the SKB from the pool.
3926 * Moves the packet buffer from queue to rx_used.
3927 * Calls iwl_rx_queue_restock to refill any empty
3928 * slots.
3929 * ...
3930 *
3931 */
3932
3933/**
3934 * iwl_rx_queue_space - Return number of free slots available in queue.
3935 */
3936static int iwl_rx_queue_space(const struct iwl_rx_queue *q)
3937{
3938 int s = q->read - q->write;
3939 if (s <= 0)
3940 s += RX_QUEUE_SIZE;
3941 /* keep some buffer to not confuse full and empty queue */
3942 s -= 2;
3943 if (s < 0)
3944 s = 0;
3945 return s;
3946}
3947
3948/**
3949 * iwl_rx_queue_update_write_ptr - Update the write pointer for the RX queue
3950 *
3951 * NOTE: This function has 3945 and 4965 specific code sections
3952 * but is declared in base due to the majority of the
3953 * implementation being the same (only a numeric constant is
3954 * different)
3955 *
3956 */
3957int iwl_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl_rx_queue *q)
3958{
3959 u32 reg = 0;
3960 int rc = 0;
3961 unsigned long flags;
3962
3963 spin_lock_irqsave(&q->lock, flags);
3964
3965 if (q->need_update == 0)
3966 goto exit_unlock;
3967
3968 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3969 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
3970
3971 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3972 iwl_set_bit(priv, CSR_GP_CNTRL,
3973 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3974 goto exit_unlock;
3975 }
3976
3977 rc = iwl_grab_restricted_access(priv);
3978 if (rc)
3979 goto exit_unlock;
3980
3981 iwl_write_restricted(priv, FH_RSCSR_CHNL0_WPTR,
3982 q->write & ~0x7);
3983 iwl_release_restricted_access(priv);
3984 } else
3985 iwl_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
3986
3987
3988 q->need_update = 0;
3989
3990 exit_unlock:
3991 spin_unlock_irqrestore(&q->lock, flags);
3992 return rc;
3993}
3994
3995/**
3996 * iwl_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer pointer.
3997 *
3998 * NOTE: This function has 3945 and 4965 specific code paths in it.
3999 */
4000static inline __le32 iwl_dma_addr2rbd_ptr(struct iwl_priv *priv,
4001 dma_addr_t dma_addr)
4002{
4003 return cpu_to_le32((u32)dma_addr);
4004}
4005
4006/**
4007 * iwl_rx_queue_restock - refill RX queue from pre-allocated pool
4008 *
4009 * If there are slots in the RX queue that need to be restocked,
4010 * and we have free pre-allocated buffers, fill the ranks as much
4011 * as we can pulling from rx_free.
4012 *
4013 * This moves the 'write' index forward to catch up with 'processed', and
4014 * also updates the memory address in the firmware to reference the new
4015 * target buffer.
4016 */
4017int iwl_rx_queue_restock(struct iwl_priv *priv)
4018{
4019 struct iwl_rx_queue *rxq = &priv->rxq;
4020 struct list_head *element;
4021 struct iwl_rx_mem_buffer *rxb;
4022 unsigned long flags;
4023 int write, rc;
4024
4025 spin_lock_irqsave(&rxq->lock, flags);
4026 write = rxq->write & ~0x7;
4027 while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
4028 element = rxq->rx_free.next;
4029 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
4030 list_del(element);
4031 rxq->bd[rxq->write] = iwl_dma_addr2rbd_ptr(priv, rxb->dma_addr);
4032 rxq->queue[rxq->write] = rxb;
4033 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
4034 rxq->free_count--;
4035 }
4036 spin_unlock_irqrestore(&rxq->lock, flags);
4037 /* If the pre-allocated buffer pool is dropping low, schedule to
4038 * refill it */
4039 if (rxq->free_count <= RX_LOW_WATERMARK)
4040 queue_work(priv->workqueue, &priv->rx_replenish);
4041
4042
4043 /* If we've added more space for the firmware to place data, tell it */
4044 if ((write != (rxq->write & ~0x7))
4045 || (abs(rxq->write - rxq->read) > 7)) {
4046 spin_lock_irqsave(&rxq->lock, flags);
4047 rxq->need_update = 1;
4048 spin_unlock_irqrestore(&rxq->lock, flags);
4049 rc = iwl_rx_queue_update_write_ptr(priv, rxq);
4050 if (rc)
4051 return rc;
4052 }
4053
4054 return 0;
4055}
4056
4057/**
4058 * iwl_rx_replensih - Move all used packet from rx_used to rx_free
4059 *
4060 * When moving to rx_free an SKB is allocated for the slot.
4061 *
4062 * Also restock the Rx queue via iwl_rx_queue_restock.
4063 * This is called as a scheduled work item (except for during intialization)
4064 */
4065void iwl_rx_replenish(void *data)
4066{
4067 struct iwl_priv *priv = data;
4068 struct iwl_rx_queue *rxq = &priv->rxq;
4069 struct list_head *element;
4070 struct iwl_rx_mem_buffer *rxb;
4071 unsigned long flags;
4072 spin_lock_irqsave(&rxq->lock, flags);
4073 while (!list_empty(&rxq->rx_used)) {
4074 element = rxq->rx_used.next;
4075 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
4076 rxb->skb =
4077 alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
4078 if (!rxb->skb) {
4079 if (net_ratelimit())
4080 printk(KERN_CRIT DRV_NAME
4081 ": Can not allocate SKB buffers\n");
4082 /* We don't reschedule replenish work here -- we will
4083 * call the restock method and if it still needs
4084 * more buffers it will schedule replenish */
4085 break;
4086 }
4087 priv->alloc_rxb_skb++;
4088 list_del(element);
4089 rxb->dma_addr =
4090 pci_map_single(priv->pci_dev, rxb->skb->data,
4091 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4092 list_add_tail(&rxb->list, &rxq->rx_free);
4093 rxq->free_count++;
4094 }
4095 spin_unlock_irqrestore(&rxq->lock, flags);
4096
4097 spin_lock_irqsave(&priv->lock, flags);
4098 iwl_rx_queue_restock(priv);
4099 spin_unlock_irqrestore(&priv->lock, flags);
4100}
4101
4102/* Assumes that the skb field of the buffers in 'pool' is kept accurate.
4103 * If an SKB has been detached, the POOL needs to have it's SKB set to NULL
4104 * This free routine walks the list of POOL entries and if SKB is set to
4105 * non NULL it is unmapped and freed
4106 */
4107void iwl_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
4108{
4109 int i;
4110 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
4111 if (rxq->pool[i].skb != NULL) {
4112 pci_unmap_single(priv->pci_dev,
4113 rxq->pool[i].dma_addr,
4114 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4115 dev_kfree_skb(rxq->pool[i].skb);
4116 }
4117 }
4118
4119 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
4120 rxq->dma_addr);
4121 rxq->bd = NULL;
4122}
4123
4124int iwl_rx_queue_alloc(struct iwl_priv *priv)
4125{
4126 struct iwl_rx_queue *rxq = &priv->rxq;
4127 struct pci_dev *dev = priv->pci_dev;
4128 int i;
4129
4130 spin_lock_init(&rxq->lock);
4131 INIT_LIST_HEAD(&rxq->rx_free);
4132 INIT_LIST_HEAD(&rxq->rx_used);
4133 rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
4134 if (!rxq->bd)
4135 return -ENOMEM;
4136 /* Fill the rx_used queue with _all_ of the Rx buffers */
4137 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
4138 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4139 /* Set us so that we have processed and used all buffers, but have
4140 * not restocked the Rx queue with fresh buffers */
4141 rxq->read = rxq->write = 0;
4142 rxq->free_count = 0;
4143 rxq->need_update = 0;
4144 return 0;
4145}
4146
4147void iwl_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
4148{
4149 unsigned long flags;
4150 int i;
4151 spin_lock_irqsave(&rxq->lock, flags);
4152 INIT_LIST_HEAD(&rxq->rx_free);
4153 INIT_LIST_HEAD(&rxq->rx_used);
4154 /* Fill the rx_used queue with _all_ of the Rx buffers */
4155 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
4156 /* In the reset function, these buffers may have been allocated
4157 * to an SKB, so we need to unmap and free potential storage */
4158 if (rxq->pool[i].skb != NULL) {
4159 pci_unmap_single(priv->pci_dev,
4160 rxq->pool[i].dma_addr,
4161 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4162 priv->alloc_rxb_skb--;
4163 dev_kfree_skb(rxq->pool[i].skb);
4164 rxq->pool[i].skb = NULL;
4165 }
4166 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4167 }
4168
4169 /* Set us so that we have processed and used all buffers, but have
4170 * not restocked the Rx queue with fresh buffers */
4171 rxq->read = rxq->write = 0;
4172 rxq->free_count = 0;
4173 spin_unlock_irqrestore(&rxq->lock, flags);
4174}
4175
4176/* Convert linear signal-to-noise ratio into dB */
4177static u8 ratio2dB[100] = {
4178/* 0 1 2 3 4 5 6 7 8 9 */
4179 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4180 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4181 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4182 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4183 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4184 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4185 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4186 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4187 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4188 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
4189};
4190
4191/* Calculates a relative dB value from a ratio of linear
4192 * (i.e. not dB) signal levels.
4193 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4194int iwl_calc_db_from_ratio(int sig_ratio)
4195{
4196 /* Anything above 1000:1 just report as 60 dB */
4197 if (sig_ratio > 1000)
4198 return 60;
4199
4200 /* Above 100:1, divide by 10 and use table,
4201 * add 20 dB to make up for divide by 10 */
4202 if (sig_ratio > 100)
4203 return (20 + (int)ratio2dB[sig_ratio/10]);
4204
4205 /* We shouldn't see this */
4206 if (sig_ratio < 1)
4207 return 0;
4208
4209 /* Use table for ratios 1:1 - 99:1 */
4210 return (int)ratio2dB[sig_ratio];
4211}
4212
4213#define PERFECT_RSSI (-20) /* dBm */
4214#define WORST_RSSI (-95) /* dBm */
4215#define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4216
4217/* Calculate an indication of rx signal quality (a percentage, not dBm!).
4218 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4219 * about formulas used below. */
4220int iwl_calc_sig_qual(int rssi_dbm, int noise_dbm)
4221{
4222 int sig_qual;
4223 int degradation = PERFECT_RSSI - rssi_dbm;
4224
4225 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4226 * as indicator; formula is (signal dbm - noise dbm).
4227 * SNR at or above 40 is a great signal (100%).
4228 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4229 * Weakest usable signal is usually 10 - 15 dB SNR. */
4230 if (noise_dbm) {
4231 if (rssi_dbm - noise_dbm >= 40)
4232 return 100;
4233 else if (rssi_dbm < noise_dbm)
4234 return 0;
4235 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4236
4237 /* Else use just the signal level.
4238 * This formula is a least squares fit of data points collected and
4239 * compared with a reference system that had a percentage (%) display
4240 * for signal quality. */
4241 } else
4242 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4243 (15 * RSSI_RANGE + 62 * degradation)) /
4244 (RSSI_RANGE * RSSI_RANGE);
4245
4246 if (sig_qual > 100)
4247 sig_qual = 100;
4248 else if (sig_qual < 1)
4249 sig_qual = 0;
4250
4251 return sig_qual;
4252}
4253
4254/**
4255 * iwl_rx_handle - Main entry function for receiving responses from the uCode
4256 *
4257 * Uses the priv->rx_handlers callback function array to invoke
4258 * the appropriate handlers, including command responses,
4259 * frame-received notifications, and other notifications.
4260 */
4261static void iwl_rx_handle(struct iwl_priv *priv)
4262{
4263 struct iwl_rx_mem_buffer *rxb;
4264 struct iwl_rx_packet *pkt;
4265 struct iwl_rx_queue *rxq = &priv->rxq;
4266 u32 r, i;
4267 int reclaim;
4268 unsigned long flags;
4269
4270 r = iwl_hw_get_rx_read(priv);
4271 i = rxq->read;
4272
4273 /* Rx interrupt, but nothing sent from uCode */
4274 if (i == r)
4275 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4276
4277 while (i != r) {
4278 rxb = rxq->queue[i];
4279
4280 /* If an RXB doesn't have a queue slot associated with it
4281 * then a bug has been introduced in the queue refilling
4282 * routines -- catch it here */
4283 BUG_ON(rxb == NULL);
4284
4285 rxq->queue[i] = NULL;
4286
4287 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4288 IWL_RX_BUF_SIZE,
4289 PCI_DMA_FROMDEVICE);
4290 pkt = (struct iwl_rx_packet *)rxb->skb->data;
4291
4292 /* Reclaim a command buffer only if this packet is a response
4293 * to a (driver-originated) command.
4294 * If the packet (e.g. Rx frame) originated from uCode,
4295 * there is no command buffer to reclaim.
4296 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4297 * but apparently a few don't get set; catch them here. */
4298 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4299 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4300 (pkt->hdr.cmd != REPLY_TX);
4301
4302 /* Based on type of command response or notification,
4303 * handle those that need handling via function in
4304 * rx_handlers table. See iwl_setup_rx_handlers() */
4305 if (priv->rx_handlers[pkt->hdr.cmd]) {
4306 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4307 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4308 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4309 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4310 } else {
4311 /* No handling needed */
4312 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4313 "r %d i %d No handler needed for %s, 0x%02x\n",
4314 r, i, get_cmd_string(pkt->hdr.cmd),
4315 pkt->hdr.cmd);
4316 }
4317
4318 if (reclaim) {
4319 /* Invoke any callbacks, transfer the skb to caller,
4320 * and fire off the (possibly) blocking iwl_send_cmd()
4321 * as we reclaim the driver command queue */
4322 if (rxb && rxb->skb)
4323 iwl_tx_cmd_complete(priv, rxb);
4324 else
4325 IWL_WARNING("Claim null rxb?\n");
4326 }
4327
4328 /* For now we just don't re-use anything. We can tweak this
4329 * later to try and re-use notification packets and SKBs that
4330 * fail to Rx correctly */
4331 if (rxb->skb != NULL) {
4332 priv->alloc_rxb_skb--;
4333 dev_kfree_skb_any(rxb->skb);
4334 rxb->skb = NULL;
4335 }
4336
4337 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4338 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4339 spin_lock_irqsave(&rxq->lock, flags);
4340 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4341 spin_unlock_irqrestore(&rxq->lock, flags);
4342 i = (i + 1) & RX_QUEUE_MASK;
4343 }
4344
4345 /* Backtrack one entry */
4346 priv->rxq.read = i;
4347 iwl_rx_queue_restock(priv);
4348}
4349
4350int iwl_tx_queue_update_write_ptr(struct iwl_priv *priv,
4351 struct iwl_tx_queue *txq)
4352{
4353 u32 reg = 0;
4354 int rc = 0;
4355 int txq_id = txq->q.id;
4356
4357 if (txq->need_update == 0)
4358 return rc;
4359
4360 /* if we're trying to save power */
4361 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4362 /* wake up nic if it's powered down ...
4363 * uCode will wake up, and interrupt us again, so next
4364 * time we'll skip this part. */
4365 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
4366
4367 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4368 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4369 iwl_set_bit(priv, CSR_GP_CNTRL,
4370 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4371 return rc;
4372 }
4373
4374 /* restore this queue's parameters in nic hardware. */
4375 rc = iwl_grab_restricted_access(priv);
4376 if (rc)
4377 return rc;
4378 iwl_write_restricted(priv, HBUS_TARG_WRPTR,
4379 txq->q.first_empty | (txq_id << 8));
4380 iwl_release_restricted_access(priv);
4381
4382 /* else not in power-save mode, uCode will never sleep when we're
4383 * trying to tx (during RFKILL, we're not trying to tx). */
4384 } else
4385 iwl_write32(priv, HBUS_TARG_WRPTR,
4386 txq->q.first_empty | (txq_id << 8));
4387
4388 txq->need_update = 0;
4389
4390 return rc;
4391}
4392
4393#ifdef CONFIG_IWLWIFI_DEBUG
4394static void iwl_print_rx_config_cmd(struct iwl_rxon_cmd *rxon)
4395{
0795af57
JP		 4396 DECLARE_MAC_BUF(mac);
4397
b481de9c
ZY		 4398 IWL_DEBUG_RADIO("RX CONFIG:\n");
4399 iwl_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4400 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4401 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4402 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4403 le32_to_cpu(rxon->filter_flags));
4404 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4405 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4406 rxon->ofdm_basic_rates);
4407 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
0795af57
JP		 4408 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4409 print_mac(mac, rxon->node_addr));
4410 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4411 print_mac(mac, rxon->bssid_addr));
b481de9c
ZY		 4412 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4413}
4414#endif
4415
4416static void iwl_enable_interrupts(struct iwl_priv *priv)
4417{
4418 IWL_DEBUG_ISR("Enabling interrupts\n");
4419 set_bit(STATUS_INT_ENABLED, &priv->status);
4420 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4421}
4422
4423static inline void iwl_disable_interrupts(struct iwl_priv *priv)
4424{
4425 clear_bit(STATUS_INT_ENABLED, &priv->status);
4426
4427 /* disable interrupts from uCode/NIC to host */
4428 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
4429
4430 /* acknowledge/clear/reset any interrupts still pending
4431 * from uCode or flow handler (Rx/Tx DMA) */
4432 iwl_write32(priv, CSR_INT, 0xffffffff);
4433 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4434 IWL_DEBUG_ISR("Disabled interrupts\n");
4435}
4436
4437static const char *desc_lookup(int i)
4438{
4439 switch (i) {
4440 case 1:
4441 return "FAIL";
4442 case 2:
4443 return "BAD_PARAM";
4444 case 3:
4445 return "BAD_CHECKSUM";
4446 case 4:
4447 return "NMI_INTERRUPT";
4448 case 5:
4449 return "SYSASSERT";
4450 case 6:
4451 return "FATAL_ERROR";
4452 }
4453
4454 return "UNKNOWN";
4455}
4456
4457#define ERROR_START_OFFSET (1 * sizeof(u32))
4458#define ERROR_ELEM_SIZE (7 * sizeof(u32))
4459
4460static void iwl_dump_nic_error_log(struct iwl_priv *priv)
4461{
4462 u32 i;
4463 u32 desc, time, count, base, data1;
4464 u32 blink1, blink2, ilink1, ilink2;
4465 int rc;
4466
4467 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4468
4469 if (!iwl_hw_valid_rtc_data_addr(base)) {
4470 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4471 return;
4472 }
4473
4474 rc = iwl_grab_restricted_access(priv);
4475 if (rc) {
4476 IWL_WARNING("Can not read from adapter at this time.\n");
4477 return;
4478 }
4479
4480 count = iwl_read_restricted_mem(priv, base);
4481
4482 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4483 IWL_ERROR("Start IWL Error Log Dump:\n");
4484 IWL_ERROR("Status: 0x%08lX, Config: %08X count: %d\n",
4485 priv->status, priv->config, count);
4486 }
4487
4488 IWL_ERROR("Desc Time asrtPC blink2 "
4489 "ilink1 nmiPC Line\n");
4490 for (i = ERROR_START_OFFSET;
4491 i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
4492 i += ERROR_ELEM_SIZE) {
4493 desc = iwl_read_restricted_mem(priv, base + i);
4494 time =
4495 iwl_read_restricted_mem(priv, base + i + 1 * sizeof(u32));
4496 blink1 =
4497 iwl_read_restricted_mem(priv, base + i + 2 * sizeof(u32));
4498 blink2 =
4499 iwl_read_restricted_mem(priv, base + i + 3 * sizeof(u32));
4500 ilink1 =
4501 iwl_read_restricted_mem(priv, base + i + 4 * sizeof(u32));
4502 ilink2 =
4503 iwl_read_restricted_mem(priv, base + i + 5 * sizeof(u32));
4504 data1 =
4505 iwl_read_restricted_mem(priv, base + i + 6 * sizeof(u32));
4506
4507 IWL_ERROR
4508 ("%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
4509 desc_lookup(desc), desc, time, blink1, blink2,
4510 ilink1, ilink2, data1);
4511 }
4512
4513 iwl_release_restricted_access(priv);
4514
4515}
4516
4517#define EVENT_START_OFFSET (4 * sizeof(u32))
4518
4519/**
4520 * iwl_print_event_log - Dump error event log to syslog
4521 *
4522 * NOTE: Must be called with iwl_grab_restricted_access() already obtained!
4523 */
4524static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
4525 u32 num_events, u32 mode)
4526{
4527 u32 i;
4528 u32 base; /* SRAM byte address of event log header */
4529 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4530 u32 ptr; /* SRAM byte address of log data */
4531 u32 ev, time, data; /* event log data */
4532
4533 if (num_events == 0)
4534 return;
4535
4536 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4537
4538 if (mode == 0)
4539 event_size = 2 * sizeof(u32);
4540 else
4541 event_size = 3 * sizeof(u32);
4542
4543 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4544
4545 /* "time" is actually "data" for mode 0 (no timestamp).
4546 * place event id # at far right for easier visual parsing. */
4547 for (i = 0; i < num_events; i++) {
4548 ev = iwl_read_restricted_mem(priv, ptr);
4549 ptr += sizeof(u32);
4550 time = iwl_read_restricted_mem(priv, ptr);
4551 ptr += sizeof(u32);
4552 if (mode == 0)
4553 IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4554 else {
4555 data = iwl_read_restricted_mem(priv, ptr);
4556 ptr += sizeof(u32);
4557 IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4558 }
4559 }
4560}
4561
4562static void iwl_dump_nic_event_log(struct iwl_priv *priv)
4563{
4564 int rc;
4565 u32 base; /* SRAM byte address of event log header */
4566 u32 capacity; /* event log capacity in # entries */
4567 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
4568 u32 num_wraps; /* # times uCode wrapped to top of log */
4569 u32 next_entry; /* index of next entry to be written by uCode */
4570 u32 size; /* # entries that we'll print */
4571
4572 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4573 if (!iwl_hw_valid_rtc_data_addr(base)) {
4574 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4575 return;
4576 }
4577
4578 rc = iwl_grab_restricted_access(priv);
4579 if (rc) {
4580 IWL_WARNING("Can not read from adapter at this time.\n");
4581 return;
4582 }
4583
4584 /* event log header */
4585 capacity = iwl_read_restricted_mem(priv, base);
4586 mode = iwl_read_restricted_mem(priv, base + (1 * sizeof(u32)));
4587 num_wraps = iwl_read_restricted_mem(priv, base + (2 * sizeof(u32)));
4588 next_entry = iwl_read_restricted_mem(priv, base + (3 * sizeof(u32)));
4589
4590 size = num_wraps ? capacity : next_entry;
4591
4592 /* bail out if nothing in log */
4593 if (size == 0) {
4594 IWL_ERROR("Start IPW Event Log Dump: nothing in log\n");
4595 iwl_release_restricted_access(priv);
4596 return;
4597 }
4598
4599 IWL_ERROR("Start IPW Event Log Dump: display count %d, wraps %d\n",
4600 size, num_wraps);
4601
4602 /* if uCode has wrapped back to top of log, start at the oldest entry,
4603 * i.e the next one that uCode would fill. */
4604 if (num_wraps)
4605 iwl_print_event_log(priv, next_entry,
4606 capacity - next_entry, mode);
4607
4608 /* (then/else) start at top of log */
4609 iwl_print_event_log(priv, 0, next_entry, mode);
4610
4611 iwl_release_restricted_access(priv);
4612}
4613
4614/**
4615 * iwl_irq_handle_error - called for HW or SW error interrupt from card
4616 */
4617static void iwl_irq_handle_error(struct iwl_priv *priv)
4618{
4619 /* Set the FW error flag -- cleared on iwl_down */
4620 set_bit(STATUS_FW_ERROR, &priv->status);
4621
4622 /* Cancel currently queued command. */
4623 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4624
4625#ifdef CONFIG_IWLWIFI_DEBUG
4626 if (iwl_debug_level & IWL_DL_FW_ERRORS) {
4627 iwl_dump_nic_error_log(priv);
4628 iwl_dump_nic_event_log(priv);
4629 iwl_print_rx_config_cmd(&priv->staging_rxon);
4630 }
4631#endif
4632
4633 wake_up_interruptible(&priv->wait_command_queue);
4634
4635 /* Keep the restart process from trying to send host
4636 * commands by clearing the INIT status bit */
4637 clear_bit(STATUS_READY, &priv->status);
4638
4639 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4640 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4641 "Restarting adapter due to uCode error.\n");
4642
4643 if (iwl_is_associated(priv)) {
4644 memcpy(&priv->recovery_rxon, &priv->active_rxon,
4645 sizeof(priv->recovery_rxon));
4646 priv->error_recovering = 1;
4647 }
4648 queue_work(priv->workqueue, &priv->restart);
4649 }
4650}
4651
4652static void iwl_error_recovery(struct iwl_priv *priv)
4653{
4654 unsigned long flags;
4655
4656 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4657 sizeof(priv->staging_rxon));
4658 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4659 iwl_commit_rxon(priv);
4660
4661 iwl_rxon_add_station(priv, priv->bssid, 1);
4662
4663 spin_lock_irqsave(&priv->lock, flags);
4664 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4665 priv->error_recovering = 0;
4666 spin_unlock_irqrestore(&priv->lock, flags);
4667}
4668
4669static void iwl_irq_tasklet(struct iwl_priv *priv)
4670{
4671 u32 inta, handled = 0;
4672 u32 inta_fh;
4673 unsigned long flags;
4674#ifdef CONFIG_IWLWIFI_DEBUG
4675 u32 inta_mask;
4676#endif
4677
4678 spin_lock_irqsave(&priv->lock, flags);
4679
4680 /* Ack/clear/reset pending uCode interrupts.
4681 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4682 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
4683 inta = iwl_read32(priv, CSR_INT);
4684 iwl_write32(priv, CSR_INT, inta);
4685
4686 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4687 * Any new interrupts that happen after this, either while we're
4688 * in this tasklet, or later, will show up in next ISR/tasklet. */
4689 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4690 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4691
4692#ifdef CONFIG_IWLWIFI_DEBUG
4693 if (iwl_debug_level & IWL_DL_ISR) {
4694 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
4695 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4696 inta, inta_mask, inta_fh);
4697 }
4698#endif
4699
4700 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4701 * atomic, make sure that inta covers all the interrupts that
4702 * we've discovered, even if FH interrupt came in just after
4703 * reading CSR_INT. */
4704 if (inta_fh & CSR_FH_INT_RX_MASK)
4705 inta |= CSR_INT_BIT_FH_RX;
4706 if (inta_fh & CSR_FH_INT_TX_MASK)
4707 inta |= CSR_INT_BIT_FH_TX;
4708
4709 /* Now service all interrupt bits discovered above. */
4710 if (inta & CSR_INT_BIT_HW_ERR) {
4711 IWL_ERROR("Microcode HW error detected. Restarting.\n");
4712
4713 /* Tell the device to stop sending interrupts */
4714 iwl_disable_interrupts(priv);
4715
4716 iwl_irq_handle_error(priv);
4717
4718 handled |= CSR_INT_BIT_HW_ERR;
4719
4720 spin_unlock_irqrestore(&priv->lock, flags);
4721
4722 return;
4723 }
4724
4725#ifdef CONFIG_IWLWIFI_DEBUG
4726 if (iwl_debug_level & (IWL_DL_ISR)) {
4727 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4728 if (inta & CSR_INT_BIT_MAC_CLK_ACTV)
4729 IWL_DEBUG_ISR("Microcode started or stopped.\n");
4730
4731 /* Alive notification via Rx interrupt will do the real work */
4732 if (inta & CSR_INT_BIT_ALIVE)
4733 IWL_DEBUG_ISR("Alive interrupt\n");
4734 }
4735#endif
4736 /* Safely ignore these bits for debug checks below */
4737 inta &= ~(CSR_INT_BIT_MAC_CLK_ACTV | CSR_INT_BIT_ALIVE);
4738
4739 /* HW RF KILL switch toggled (4965 only) */
4740 if (inta & CSR_INT_BIT_RF_KILL) {
4741 int hw_rf_kill = 0;
4742 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
4743 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
4744 hw_rf_kill = 1;
4745
4746 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
4747 "RF_KILL bit toggled to %s.\n",
4748 hw_rf_kill ? "disable radio":"enable radio");
4749
4750 /* Queue restart only if RF_KILL switch was set to "kill"
4751 * when we loaded driver, and is now set to "enable".
4752 * After we're Alive, RF_KILL gets handled by
4753 * iwl_rx_card_state_notif() */
4754 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
4755 queue_work(priv->workqueue, &priv->restart);
4756
4757 handled |= CSR_INT_BIT_RF_KILL;
4758 }
4759
4760 /* Chip got too hot and stopped itself (4965 only) */
4761 if (inta & CSR_INT_BIT_CT_KILL) {
4762 IWL_ERROR("Microcode CT kill error detected.\n");
4763 handled |= CSR_INT_BIT_CT_KILL;
4764 }
4765
4766 /* Error detected by uCode */
4767 if (inta & CSR_INT_BIT_SW_ERR) {
4768 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
4769 inta);
4770 iwl_irq_handle_error(priv);
4771 handled |= CSR_INT_BIT_SW_ERR;
4772 }
4773
4774 /* uCode wakes up after power-down sleep */
4775 if (inta & CSR_INT_BIT_WAKEUP) {
4776 IWL_DEBUG_ISR("Wakeup interrupt\n");
4777 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
4778 iwl_tx_queue_update_write_ptr(priv, &priv->txq[0]);
4779 iwl_tx_queue_update_write_ptr(priv, &priv->txq[1]);
4780 iwl_tx_queue_update_write_ptr(priv, &priv->txq[2]);
4781 iwl_tx_queue_update_write_ptr(priv, &priv->txq[3]);
4782 iwl_tx_queue_update_write_ptr(priv, &priv->txq[4]);
4783 iwl_tx_queue_update_write_ptr(priv, &priv->txq[5]);
4784
4785 handled |= CSR_INT_BIT_WAKEUP;
4786 }
4787
4788 /* All uCode command responses, including Tx command responses,
4789 * Rx "responses" (frame-received notification), and other
4790 * notifications from uCode come through here*/
4791 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
4792 iwl_rx_handle(priv);
4793 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
4794 }
4795
4796 if (inta & CSR_INT_BIT_FH_TX) {
4797 IWL_DEBUG_ISR("Tx interrupt\n");
4798
4799 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
4800 if (!iwl_grab_restricted_access(priv)) {
4801 iwl_write_restricted(priv,
4802 FH_TCSR_CREDIT
4803 (ALM_FH_SRVC_CHNL), 0x0);
4804 iwl_release_restricted_access(priv);
4805 }
4806 handled |= CSR_INT_BIT_FH_TX;
4807 }
4808
4809 if (inta & ~handled)
4810 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
4811
4812 if (inta & ~CSR_INI_SET_MASK) {
4813 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
4814 inta & ~CSR_INI_SET_MASK);
4815 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
4816 }
4817
4818 /* Re-enable all interrupts */
4819 iwl_enable_interrupts(priv);
4820
4821#ifdef CONFIG_IWLWIFI_DEBUG
4822 if (iwl_debug_level & (IWL_DL_ISR)) {
4823 inta = iwl_read32(priv, CSR_INT);
4824 inta_mask = iwl_read32(priv, CSR_INT_MASK);
4825 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4826 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4827 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
4828 }
4829#endif
4830 spin_unlock_irqrestore(&priv->lock, flags);
4831}
4832
4833static irqreturn_t iwl_isr(int irq, void *data)
4834{
4835 struct iwl_priv *priv = data;
4836 u32 inta, inta_mask;
4837 u32 inta_fh;
4838 if (!priv)
4839 return IRQ_NONE;
4840
4841 spin_lock(&priv->lock);
4842
4843 /* Disable (but don't clear!) interrupts here to avoid
4844 * back-to-back ISRs and sporadic interrupts from our NIC.
4845 * If we have something to service, the tasklet will re-enable ints.
4846 * If we *don't* have something, we'll re-enable before leaving here. */
4847 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
4848 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
4849
4850 /* Discover which interrupts are active/pending */
4851 inta = iwl_read32(priv, CSR_INT);
4852 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4853
4854 /* Ignore interrupt if there's nothing in NIC to service.
4855 * This may be due to IRQ shared with another device,
4856 * or due to sporadic interrupts thrown from our NIC. */
4857 if (!inta && !inta_fh) {
4858 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4859 goto none;
4860 }
4861
4862 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
4863 /* Hardware disappeared */
4864 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
4865 goto none;
4866 }
4867
4868 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4869 inta, inta_mask, inta_fh);
4870
4871 /* iwl_irq_tasklet() will service interrupts and re-enable them */
4872 tasklet_schedule(&priv->irq_tasklet);
4873 spin_unlock(&priv->lock);
4874
4875 return IRQ_HANDLED;
4876
4877 none:
4878 /* re-enable interrupts here since we don't have anything to service. */
4879 iwl_enable_interrupts(priv);
4880 spin_unlock(&priv->lock);
4881 return IRQ_NONE;
4882}
4883
4884/************************** EEPROM BANDS ****************************
4885 *
4886 * The iwl_eeprom_band definitions below provide the mapping from the
4887 * EEPROM contents to the specific channel number supported for each
4888 * band.
4889 *
4890 * For example, iwl_priv->eeprom.band_3_channels[4] from the band_3
4891 * definition below maps to physical channel 42 in the 5.2GHz spectrum.
4892 * The specific geography and calibration information for that channel
4893 * is contained in the eeprom map itself.
4894 *
4895 * During init, we copy the eeprom information and channel map
4896 * information into priv->channel_info_24/52 and priv->channel_map_24/52
4897 *
4898 * channel_map_24/52 provides the index in the channel_info array for a
4899 * given channel. We have to have two separate maps as there is channel
4900 * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
4901 * band_2
4902 *
4903 * A value of 0xff stored in the channel_map indicates that the channel
4904 * is not supported by the hardware at all.
4905 *
4906 * A value of 0xfe in the channel_map indicates that the channel is not
4907 * valid for Tx with the current hardware. This means that
4908 * while the system can tune and receive on a given channel, it may not
4909 * be able to associate or transmit any frames on that
4910 * channel. There is no corresponding channel information for that
4911 * entry.
4912 *
4913 *********************************************************************/
4914
4915/* 2.4 GHz */
4916static const u8 iwl_eeprom_band_1[14] = {
4917 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
4918};
4919
4920/* 5.2 GHz bands */
4921static const u8 iwl_eeprom_band_2[] = {
4922 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
4923};
4924
4925static const u8 iwl_eeprom_band_3[] = { /* 5205-5320MHz */
4926 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
4927};
4928
4929static const u8 iwl_eeprom_band_4[] = { /* 5500-5700MHz */
4930 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
4931};
4932
4933static const u8 iwl_eeprom_band_5[] = { /* 5725-5825MHz */
4934 145, 149, 153, 157, 161, 165
4935};
4936
4937static void iwl_init_band_reference(const struct iwl_priv *priv, int band,
4938 int *eeprom_ch_count,
4939 const struct iwl_eeprom_channel
4940 **eeprom_ch_info,
4941 const u8 **eeprom_ch_index)
4942{
4943 switch (band) {
4944 case 1: /* 2.4GHz band */
4945 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_1);
4946 *eeprom_ch_info = priv->eeprom.band_1_channels;
4947 *eeprom_ch_index = iwl_eeprom_band_1;
4948 break;
4949 case 2: /* 5.2GHz band */
4950 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_2);
4951 *eeprom_ch_info = priv->eeprom.band_2_channels;
4952 *eeprom_ch_index = iwl_eeprom_band_2;
4953 break;
4954 case 3: /* 5.2GHz band */
4955 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_3);
4956 *eeprom_ch_info = priv->eeprom.band_3_channels;
4957 *eeprom_ch_index = iwl_eeprom_band_3;
4958 break;
4959 case 4: /* 5.2GHz band */
4960 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_4);
4961 *eeprom_ch_info = priv->eeprom.band_4_channels;
4962 *eeprom_ch_index = iwl_eeprom_band_4;
4963 break;
4964 case 5: /* 5.2GHz band */
4965 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_5);
4966 *eeprom_ch_info = priv->eeprom.band_5_channels;
4967 *eeprom_ch_index = iwl_eeprom_band_5;
4968 break;
4969 default:
4970 BUG();
4971 return;
4972 }
4973}
4974
4975const struct iwl_channel_info *iwl_get_channel_info(const struct iwl_priv *priv,
4976 int phymode, u16 channel)
4977{
4978 int i;
4979
4980 switch (phymode) {
4981 case MODE_IEEE80211A:
4982 for (i = 14; i < priv->channel_count; i++) {
4983 if (priv->channel_info[i].channel == channel)
4984 return &priv->channel_info[i];
4985 }
4986 break;
4987
4988 case MODE_IEEE80211B:
4989 case MODE_IEEE80211G:
4990 if (channel >= 1 && channel <= 14)
4991 return &priv->channel_info[channel - 1];
4992 break;
4993
4994 }
4995
4996 return NULL;
4997}
4998
4999#define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
5000 ? # x " " : "")
5001
5002static int iwl_init_channel_map(struct iwl_priv *priv)
5003{
5004 int eeprom_ch_count = 0;
5005 const u8 *eeprom_ch_index = NULL;
5006 const struct iwl_eeprom_channel *eeprom_ch_info = NULL;
5007 int band, ch;
5008 struct iwl_channel_info *ch_info;
5009
5010 if (priv->channel_count) {
5011 IWL_DEBUG_INFO("Channel map already initialized.\n");
5012 return 0;
5013 }
5014
5015 if (priv->eeprom.version < 0x2f) {
5016 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
5017 priv->eeprom.version);
5018 return -EINVAL;
5019 }
5020
5021 IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
5022
5023 priv->channel_count =
5024 ARRAY_SIZE(iwl_eeprom_band_1) +
5025 ARRAY_SIZE(iwl_eeprom_band_2) +
5026 ARRAY_SIZE(iwl_eeprom_band_3) +
5027 ARRAY_SIZE(iwl_eeprom_band_4) +
5028 ARRAY_SIZE(iwl_eeprom_band_5);
5029
5030 IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
5031
5032 priv->channel_info = kzalloc(sizeof(struct iwl_channel_info) *
5033 priv->channel_count, GFP_KERNEL);
5034 if (!priv->channel_info) {
5035 IWL_ERROR("Could not allocate channel_info\n");
5036 priv->channel_count = 0;
5037 return -ENOMEM;
5038 }
5039
5040 ch_info = priv->channel_info;
5041
5042 /* Loop through the 5 EEPROM bands adding them in order to the
5043 * channel map we maintain (that contains additional information than
5044 * what just in the EEPROM) */
5045 for (band = 1; band <= 5; band++) {
5046
5047 iwl_init_band_reference(priv, band, &eeprom_ch_count,
5048 &eeprom_ch_info, &eeprom_ch_index);
5049
5050 /* Loop through each band adding each of the channels */
5051 for (ch = 0; ch < eeprom_ch_count; ch++) {
5052 ch_info->channel = eeprom_ch_index[ch];
5053 ch_info->phymode = (band == 1) ? MODE_IEEE80211B :
5054 MODE_IEEE80211A;
5055
5056 /* permanently store EEPROM's channel regulatory flags
5057 * and max power in channel info database. */
5058 ch_info->eeprom = eeprom_ch_info[ch];
5059
5060 /* Copy the run-time flags so they are there even on
5061 * invalid channels */
5062 ch_info->flags = eeprom_ch_info[ch].flags;
5063
5064 if (!(is_channel_valid(ch_info))) {
5065 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
5066 "No traffic\n",
5067 ch_info->channel,
5068 ch_info->flags,
5069 is_channel_a_band(ch_info) ?
5070 "5.2" : "2.4");
5071 ch_info++;
5072 continue;
5073 }
5074
5075 /* Initialize regulatory-based run-time data */
5076 ch_info->max_power_avg = ch_info->curr_txpow =
5077 eeprom_ch_info[ch].max_power_avg;
5078 ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
5079 ch_info->min_power = 0;
5080
5081 IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
5082 " %ddBm): Ad-Hoc %ssupported\n",
5083 ch_info->channel,
5084 is_channel_a_band(ch_info) ?
5085 "5.2" : "2.4",
5086 CHECK_AND_PRINT(IBSS),
5087 CHECK_AND_PRINT(ACTIVE),
5088 CHECK_AND_PRINT(RADAR),
5089 CHECK_AND_PRINT(WIDE),
5090 CHECK_AND_PRINT(NARROW),
5091 CHECK_AND_PRINT(DFS),
5092 eeprom_ch_info[ch].flags,
5093 eeprom_ch_info[ch].max_power_avg,
5094 ((eeprom_ch_info[ch].
5095 flags & EEPROM_CHANNEL_IBSS)
5096 && !(eeprom_ch_info[ch].
5097 flags & EEPROM_CHANNEL_RADAR))
5098 ? "" : "not ");
5099
5100 /* Set the user_txpower_limit to the highest power
5101 * supported by any channel */
5102 if (eeprom_ch_info[ch].max_power_avg >
5103 priv->user_txpower_limit)
5104 priv->user_txpower_limit =
5105 eeprom_ch_info[ch].max_power_avg;
5106
5107 ch_info++;
5108 }
5109 }
5110
5111 if (iwl3945_txpower_set_from_eeprom(priv))
5112 return -EIO;
5113
5114 return 0;
5115}
5116
5117/* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5118 * sending probe req. This should be set long enough to hear probe responses
5119 * from more than one AP. */
5120#define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
5121#define IWL_ACTIVE_DWELL_TIME_52 (10)
5122
5123/* For faster active scanning, scan will move to the next channel if fewer than
5124 * PLCP_QUIET_THRESH packets are heard on this channel within
5125 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
5126 * time if it's a quiet channel (nothing responded to our probe, and there's
5127 * no other traffic).
5128 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5129#define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
5130#define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
5131
5132/* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5133 * Must be set longer than active dwell time.
5134 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
5135#define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
5136#define IWL_PASSIVE_DWELL_TIME_52 (10)
5137#define IWL_PASSIVE_DWELL_BASE (100)
5138#define IWL_CHANNEL_TUNE_TIME 5
5139
5140static inline u16 iwl_get_active_dwell_time(struct iwl_priv *priv, int phymode)
5141{
5142 if (phymode == MODE_IEEE80211A)
5143 return IWL_ACTIVE_DWELL_TIME_52;
5144 else
5145 return IWL_ACTIVE_DWELL_TIME_24;
5146}
5147
5148static u16 iwl_get_passive_dwell_time(struct iwl_priv *priv, int phymode)
5149{
5150 u16 active = iwl_get_active_dwell_time(priv, phymode);
5151 u16 passive = (phymode != MODE_IEEE80211A) ?
5152 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
5153 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
5154
5155 if (iwl_is_associated(priv)) {
5156 /* If we're associated, we clamp the maximum passive
5157 * dwell time to be 98% of the beacon interval (minus
5158 * 2 * channel tune time) */
5159 passive = priv->beacon_int;
5160 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
5161 passive = IWL_PASSIVE_DWELL_BASE;
5162 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
5163 }
5164
5165 if (passive <= active)
5166 passive = active + 1;
5167
5168 return passive;
5169}
5170
5171static int iwl_get_channels_for_scan(struct iwl_priv *priv, int phymode,
5172 u8 is_active, u8 direct_mask,
5173 struct iwl_scan_channel *scan_ch)
5174{
5175 const struct ieee80211_channel *channels = NULL;
5176 const struct ieee80211_hw_mode *hw_mode;
5177 const struct iwl_channel_info *ch_info;
5178 u16 passive_dwell = 0;
5179 u16 active_dwell = 0;
5180 int added, i;
5181
5182 hw_mode = iwl_get_hw_mode(priv, phymode);
5183 if (!hw_mode)
5184 return 0;
5185
5186 channels = hw_mode->channels;
5187
5188 active_dwell = iwl_get_active_dwell_time(priv, phymode);
5189 passive_dwell = iwl_get_passive_dwell_time(priv, phymode);
5190
5191 for (i = 0, added = 0; i < hw_mode->num_channels; i++) {
5192 if (channels[i].chan ==
5193 le16_to_cpu(priv->active_rxon.channel)) {
5194 if (iwl_is_associated(priv)) {
5195 IWL_DEBUG_SCAN
5196 ("Skipping current channel %d\n",
5197 le16_to_cpu(priv->active_rxon.channel));
5198 continue;
5199 }
5200 } else if (priv->only_active_channel)
5201 continue;
5202
5203 scan_ch->channel = channels[i].chan;
5204
5205 ch_info = iwl_get_channel_info(priv, phymode, scan_ch->channel);
5206 if (!is_channel_valid(ch_info)) {
5207 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5208 scan_ch->channel);
5209 continue;
5210 }
5211
5212 if (!is_active || is_channel_passive(ch_info) ||
5213 !(channels[i].flag & IEEE80211_CHAN_W_ACTIVE_SCAN))
5214 scan_ch->type = 0; /* passive */
5215 else
5216 scan_ch->type = 1; /* active */
5217
5218 if (scan_ch->type & 1)
5219 scan_ch->type |= (direct_mask << 1);
5220
5221 if (is_channel_narrow(ch_info))
5222 scan_ch->type |= (1 << 7);
5223
5224 scan_ch->active_dwell = cpu_to_le16(active_dwell);
5225 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
5226
5227 /* Set power levels to defaults */
5228 scan_ch->tpc.dsp_atten = 110;
5229 /* scan_pwr_info->tpc.dsp_atten; */
5230
5231 /*scan_pwr_info->tpc.tx_gain; */
5232 if (phymode == MODE_IEEE80211A)
5233 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
5234 else {
5235 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
5236 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5237 * power level
5238 scan_ch->tpc.tx_gain = ((1<<5) | (2 << 3)) | 3;
5239 */
5240 }
5241
5242 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5243 scan_ch->channel,
5244 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
5245 (scan_ch->type & 1) ?
5246 active_dwell : passive_dwell);
5247
5248 scan_ch++;
5249 added++;
5250 }
5251
5252 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
5253 return added;
5254}
5255
5256static void iwl_reset_channel_flag(struct iwl_priv *priv)
5257{
5258 int i, j;
5259 for (i = 0; i < 3; i++) {
5260 struct ieee80211_hw_mode *hw_mode = (void *)&priv->modes[i];
5261 for (j = 0; j < hw_mode->num_channels; j++)
5262 hw_mode->channels[j].flag = hw_mode->channels[j].val;
5263 }
5264}
5265
5266static void iwl_init_hw_rates(struct iwl_priv *priv,
5267 struct ieee80211_rate *rates)
5268{
5269 int i;
5270
5271 for (i = 0; i < IWL_RATE_COUNT; i++) {
5272 rates[i].rate = iwl_rates[i].ieee * 5;
5273 rates[i].val = i; /* Rate scaling will work on indexes */
5274 rates[i].val2 = i;
5275 rates[i].flags = IEEE80211_RATE_SUPPORTED;
5276 /* Only OFDM have the bits-per-symbol set */
5277 if ((i <= IWL_LAST_OFDM_RATE) && (i >= IWL_FIRST_OFDM_RATE))
5278 rates[i].flags |= IEEE80211_RATE_OFDM;
5279 else {
5280 /*
5281 * If CCK 1M then set rate flag to CCK else CCK_2
5282 * which is CCK | PREAMBLE2
5283 */
5284 rates[i].flags |= (iwl_rates[i].plcp == 10) ?
5285 IEEE80211_RATE_CCK : IEEE80211_RATE_CCK_2;
5286 }
5287
5288 /* Set up which ones are basic rates... */
5289 if (IWL_BASIC_RATES_MASK & (1 << i))
5290 rates[i].flags |= IEEE80211_RATE_BASIC;
5291 }
5292}
5293
5294/**
5295 * iwl_init_geos - Initialize mac80211's geo/channel info based from eeprom
5296 */
5297static int iwl_init_geos(struct iwl_priv *priv)
5298{
5299 struct iwl_channel_info *ch;
5300 struct ieee80211_hw_mode *modes;
5301 struct ieee80211_channel *channels;
5302 struct ieee80211_channel *geo_ch;
5303 struct ieee80211_rate *rates;
5304 int i = 0;
5305 enum {
5306 A = 0,
5307 B = 1,
5308 G = 2,
5309 };
5310 int mode_count = 3;
5311
5312 if (priv->modes) {
5313 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5314 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5315 return 0;
5316 }
5317
5318 modes = kzalloc(sizeof(struct ieee80211_hw_mode) * mode_count,
5319 GFP_KERNEL);
5320 if (!modes)
5321 return -ENOMEM;
5322
5323 channels = kzalloc(sizeof(struct ieee80211_channel) *
5324 priv->channel_count, GFP_KERNEL);
5325 if (!channels) {
5326 kfree(modes);
5327 return -ENOMEM;
5328 }
5329
5330 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_MAX_RATES + 1)),
5331 GFP_KERNEL);
5332 if (!rates) {
5333 kfree(modes);
5334 kfree(channels);
5335 return -ENOMEM;
5336 }
5337
5338 /* 0 = 802.11a
5339 * 1 = 802.11b
5340 * 2 = 802.11g
5341 */
5342
5343 /* 5.2GHz channels start after the 2.4GHz channels */
5344 modes[A].mode = MODE_IEEE80211A;
5345 modes[A].channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
5346 modes[A].rates = rates;
5347 modes[A].num_rates = 8; /* just OFDM */
5348 modes[A].num_channels = 0;
5349
5350 modes[B].mode = MODE_IEEE80211B;
5351 modes[B].channels = channels;
5352 modes[B].rates = &rates[8];
5353 modes[B].num_rates = 4; /* just CCK */
5354 modes[B].num_channels = 0;
5355
5356 modes[G].mode = MODE_IEEE80211G;
5357 modes[G].channels = channels;
5358 modes[G].rates = rates;
5359 modes[G].num_rates = 12; /* OFDM & CCK */
5360 modes[G].num_channels = 0;
5361
5362 priv->ieee_channels = channels;
5363 priv->ieee_rates = rates;
5364
5365 iwl_init_hw_rates(priv, rates);
5366
5367 for (i = 0, geo_ch = channels; i < priv->channel_count; i++) {
5368 ch = &priv->channel_info[i];
5369
5370 if (!is_channel_valid(ch)) {
5371 IWL_DEBUG_INFO("Channel %d [%sGHz] is restricted -- "
5372 "skipping.\n",
5373 ch->channel, is_channel_a_band(ch) ?
5374 "5.2" : "2.4");
5375 continue;
5376 }
5377
5378 if (is_channel_a_band(ch))
5379 geo_ch = &modes[A].channels[modes[A].num_channels++];
5380 else {
5381 geo_ch = &modes[B].channels[modes[B].num_channels++];
5382 modes[G].num_channels++;
5383 }
5384
5385 geo_ch->freq = ieee80211chan2mhz(ch->channel);
5386 geo_ch->chan = ch->channel;
5387 geo_ch->power_level = ch->max_power_avg;
5388 geo_ch->antenna_max = 0xff;
5389
5390 if (is_channel_valid(ch)) {
5391 geo_ch->flag = IEEE80211_CHAN_W_SCAN;
5392 if (ch->flags & EEPROM_CHANNEL_IBSS)
5393 geo_ch->flag |= IEEE80211_CHAN_W_IBSS;
5394
5395 if (ch->flags & EEPROM_CHANNEL_ACTIVE)
5396 geo_ch->flag |= IEEE80211_CHAN_W_ACTIVE_SCAN;
5397
5398 if (ch->flags & EEPROM_CHANNEL_RADAR)
5399 geo_ch->flag |= IEEE80211_CHAN_W_RADAR_DETECT;
5400
5401 if (ch->max_power_avg > priv->max_channel_txpower_limit)
5402 priv->max_channel_txpower_limit =
5403 ch->max_power_avg;
5404 }
5405
5406 geo_ch->val = geo_ch->flag;
5407 }
5408
5409 if ((modes[A].num_channels == 0) && priv->is_abg) {
5410 printk(KERN_INFO DRV_NAME
5411 ": Incorrectly detected BG card as ABG. Please send "
5412 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5413 priv->pci_dev->device, priv->pci_dev->subsystem_device);
5414 priv->is_abg = 0;
5415 }
5416
5417 printk(KERN_INFO DRV_NAME
5418 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5419 modes[G].num_channels, modes[A].num_channels);
5420
5421 /*
5422 * NOTE: We register these in preference of order -- the
5423 * stack doesn't currently (as of 7.0.6 / Apr 24 '07) pick
5424 * a phymode based on rates or AP capabilities but seems to
5425 * configure it purely on if the channel being configured
5426 * is supported by a mode -- and the first match is taken
5427 */
5428
5429 if (modes[G].num_channels)
5430 ieee80211_register_hwmode(priv->hw, &modes[G]);
5431 if (modes[B].num_channels)
5432 ieee80211_register_hwmode(priv->hw, &modes[B]);
5433 if (modes[A].num_channels)
5434 ieee80211_register_hwmode(priv->hw, &modes[A]);
5435
5436 priv->modes = modes;
5437 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5438
5439 return 0;
5440}
5441
5442/******************************************************************************
5443 *
5444 * uCode download functions
5445 *
5446 ******************************************************************************/
5447
5448static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
5449{
5450 if (priv->ucode_code.v_addr != NULL) {
5451 pci_free_consistent(priv->pci_dev,
5452 priv->ucode_code.len,
5453 priv->ucode_code.v_addr,
5454 priv->ucode_code.p_addr);
5455 priv->ucode_code.v_addr = NULL;
5456 }
5457 if (priv->ucode_data.v_addr != NULL) {
5458 pci_free_consistent(priv->pci_dev,
5459 priv->ucode_data.len,
5460 priv->ucode_data.v_addr,
5461 priv->ucode_data.p_addr);
5462 priv->ucode_data.v_addr = NULL;
5463 }
5464 if (priv->ucode_data_backup.v_addr != NULL) {
5465 pci_free_consistent(priv->pci_dev,
5466 priv->ucode_data_backup.len,
5467 priv->ucode_data_backup.v_addr,
5468 priv->ucode_data_backup.p_addr);
5469 priv->ucode_data_backup.v_addr = NULL;
5470 }
5471 if (priv->ucode_init.v_addr != NULL) {
5472 pci_free_consistent(priv->pci_dev,
5473 priv->ucode_init.len,
5474 priv->ucode_init.v_addr,
5475 priv->ucode_init.p_addr);
5476 priv->ucode_init.v_addr = NULL;
5477 }
5478 if (priv->ucode_init_data.v_addr != NULL) {
5479 pci_free_consistent(priv->pci_dev,
5480 priv->ucode_init_data.len,
5481 priv->ucode_init_data.v_addr,
5482 priv->ucode_init_data.p_addr);
5483 priv->ucode_init_data.v_addr = NULL;
5484 }
5485 if (priv->ucode_boot.v_addr != NULL) {
5486 pci_free_consistent(priv->pci_dev,
5487 priv->ucode_boot.len,
5488 priv->ucode_boot.v_addr,
5489 priv->ucode_boot.p_addr);
5490 priv->ucode_boot.v_addr = NULL;
5491 }
5492}
5493
5494/**
5495 * iwl_verify_inst_full - verify runtime uCode image in card vs. host,
5496 * looking at all data.
5497 */
5498static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 * image, u32 len)
5499{
5500 u32 val;
5501 u32 save_len = len;
5502 int rc = 0;
5503 u32 errcnt;
5504
5505 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5506
5507 rc = iwl_grab_restricted_access(priv);
5508 if (rc)
5509 return rc;
5510
5511 iwl_write_restricted(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5512
5513 errcnt = 0;
5514 for (; len > 0; len -= sizeof(u32), image++) {
5515 /* read data comes through single port, auto-incr addr */
5516 /* NOTE: Use the debugless read so we don't flood kernel log
5517 * if IWL_DL_IO is set */
5518 val = _iwl_read_restricted(priv, HBUS_TARG_MEM_RDAT);
5519 if (val != le32_to_cpu(*image)) {
5520 IWL_ERROR("uCode INST section is invalid at "
5521 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5522 save_len - len, val, le32_to_cpu(*image));
5523 rc = -EIO;
5524 errcnt++;
5525 if (errcnt >= 20)
5526 break;
5527 }
5528 }
5529
5530 iwl_release_restricted_access(priv);
5531
5532 if (!errcnt)
5533 IWL_DEBUG_INFO
5534 ("ucode image in INSTRUCTION memory is good\n");
5535
5536 return rc;
5537}
5538
5539
5540/**
5541 * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
5542 * using sample data 100 bytes apart. If these sample points are good,
5543 * it's a pretty good bet that everything between them is good, too.
5544 */
5545static int iwl_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
5546{
5547 u32 val;
5548 int rc = 0;
5549 u32 errcnt = 0;
5550 u32 i;
5551
5552 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5553
5554 rc = iwl_grab_restricted_access(priv);
5555 if (rc)
5556 return rc;
5557
5558 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
5559 /* read data comes through single port, auto-incr addr */
5560 /* NOTE: Use the debugless read so we don't flood kernel log
5561 * if IWL_DL_IO is set */
5562 iwl_write_restricted(priv, HBUS_TARG_MEM_RADDR,
5563 i + RTC_INST_LOWER_BOUND);
5564 val = _iwl_read_restricted(priv, HBUS_TARG_MEM_RDAT);
5565 if (val != le32_to_cpu(*image)) {
5566#if 0 /* Enable this if you want to see details */
5567 IWL_ERROR("uCode INST section is invalid at "
5568 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5569 i, val, *image);
5570#endif
5571 rc = -EIO;
5572 errcnt++;
5573 if (errcnt >= 3)
5574 break;
5575 }
5576 }
5577
5578 iwl_release_restricted_access(priv);
5579
5580 return rc;
5581}
5582
5583
5584/**
5585 * iwl_verify_ucode - determine which instruction image is in SRAM,
5586 * and verify its contents
5587 */
5588static int iwl_verify_ucode(struct iwl_priv *priv)
5589{
5590 __le32 *image;
5591 u32 len;
5592 int rc = 0;
5593
5594 /* Try bootstrap */
5595 image = (__le32 *)priv->ucode_boot.v_addr;
5596 len = priv->ucode_boot.len;
5597 rc = iwl_verify_inst_sparse(priv, image, len);
5598 if (rc == 0) {
5599 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5600 return 0;
5601 }
5602
5603 /* Try initialize */
5604 image = (__le32 *)priv->ucode_init.v_addr;
5605 len = priv->ucode_init.len;
5606 rc = iwl_verify_inst_sparse(priv, image, len);
5607 if (rc == 0) {
5608 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5609 return 0;
5610 }
5611
5612 /* Try runtime/protocol */
5613 image = (__le32 *)priv->ucode_code.v_addr;
5614 len = priv->ucode_code.len;
5615 rc = iwl_verify_inst_sparse(priv, image, len);
5616 if (rc == 0) {
5617 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5618 return 0;
5619 }
5620
5621 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5622
5623 /* Show first several data entries in instruction SRAM.
5624 * Selection of bootstrap image is arbitrary. */
5625 image = (__le32 *)priv->ucode_boot.v_addr;
5626 len = priv->ucode_boot.len;
5627 rc = iwl_verify_inst_full(priv, image, len);
5628
5629 return rc;
5630}
5631
5632
5633/* check contents of special bootstrap uCode SRAM */
5634static int iwl_verify_bsm(struct iwl_priv *priv)
5635{
5636 __le32 *image = priv->ucode_boot.v_addr;
5637 u32 len = priv->ucode_boot.len;
5638 u32 reg;
5639 u32 val;
5640
5641 IWL_DEBUG_INFO("Begin verify bsm\n");
5642
5643 /* verify BSM SRAM contents */
5644 val = iwl_read_restricted_reg(priv, BSM_WR_DWCOUNT_REG);
5645 for (reg = BSM_SRAM_LOWER_BOUND;
5646 reg < BSM_SRAM_LOWER_BOUND + len;
5647 reg += sizeof(u32), image ++) {
5648 val = iwl_read_restricted_reg(priv, reg);
5649 if (val != le32_to_cpu(*image)) {
5650 IWL_ERROR("BSM uCode verification failed at "
5651 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
5652 BSM_SRAM_LOWER_BOUND,
5653 reg - BSM_SRAM_LOWER_BOUND, len,
5654 val, le32_to_cpu(*image));
5655 return -EIO;
5656 }
5657 }
5658
5659 IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
5660
5661 return 0;
5662}
5663
5664/**
5665 * iwl_load_bsm - Load bootstrap instructions
5666 *
5667 * BSM operation:
5668 *
5669 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
5670 * in special SRAM that does not power down during RFKILL. When powering back
5671 * up after power-saving sleeps (or during initial uCode load), the BSM loads
5672 * the bootstrap program into the on-board processor, and starts it.
5673 *
5674 * The bootstrap program loads (via DMA) instructions and data for a new
5675 * program from host DRAM locations indicated by the host driver in the
5676 * BSM_DRAM_* registers. Once the new program is loaded, it starts
5677 * automatically.
5678 *
5679 * When initializing the NIC, the host driver points the BSM to the
5680 * "initialize" uCode image. This uCode sets up some internal data, then
5681 * notifies host via "initialize alive" that it is complete.
5682 *
5683 * The host then replaces the BSM_DRAM_* pointer values to point to the
5684 * normal runtime uCode instructions and a backup uCode data cache buffer
5685 * (filled initially with starting data values for the on-board processor),
5686 * then triggers the "initialize" uCode to load and launch the runtime uCode,
5687 * which begins normal operation.
5688 *
5689 * When doing a power-save shutdown, runtime uCode saves data SRAM into
5690 * the backup data cache in DRAM before SRAM is powered down.
5691 *
5692 * When powering back up, the BSM loads the bootstrap program. This reloads
5693 * the runtime uCode instructions and the backup data cache into SRAM,
5694 * and re-launches the runtime uCode from where it left off.
5695 */
5696static int iwl_load_bsm(struct iwl_priv *priv)
5697{
5698 __le32 *image = priv->ucode_boot.v_addr;
5699 u32 len = priv->ucode_boot.len;
5700 dma_addr_t pinst;
5701 dma_addr_t pdata;
5702 u32 inst_len;
5703 u32 data_len;
5704 int rc;
5705 int i;
5706 u32 done;
5707 u32 reg_offset;
5708
5709 IWL_DEBUG_INFO("Begin load bsm\n");
5710
5711 /* make sure bootstrap program is no larger than BSM's SRAM size */
5712 if (len > IWL_MAX_BSM_SIZE)
5713 return -EINVAL;
5714
5715 /* Tell bootstrap uCode where to find the "Initialize" uCode
5716 * in host DRAM ... bits 31:0 for 3945, bits 35:4 for 4965.
5717 * NOTE: iwl_initialize_alive_start() will replace these values,
5718 * after the "initialize" uCode has run, to point to
5719 * runtime/protocol instructions and backup data cache. */
5720 pinst = priv->ucode_init.p_addr;
5721 pdata = priv->ucode_init_data.p_addr;
5722 inst_len = priv->ucode_init.len;
5723 data_len = priv->ucode_init_data.len;
5724
5725 rc = iwl_grab_restricted_access(priv);
5726 if (rc)
5727 return rc;
5728
5729 iwl_write_restricted_reg(priv, BSM_DRAM_INST_PTR_REG, pinst);
5730 iwl_write_restricted_reg(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5731 iwl_write_restricted_reg(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
5732 iwl_write_restricted_reg(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
5733
5734 /* Fill BSM memory with bootstrap instructions */
5735 for (reg_offset = BSM_SRAM_LOWER_BOUND;
5736 reg_offset < BSM_SRAM_LOWER_BOUND + len;
5737 reg_offset += sizeof(u32), image++)
5738 _iwl_write_restricted_reg(priv, reg_offset,
5739 le32_to_cpu(*image));
5740
5741 rc = iwl_verify_bsm(priv);
5742 if (rc) {
5743 iwl_release_restricted_access(priv);
5744 return rc;
5745 }
5746
5747 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
5748 iwl_write_restricted_reg(priv, BSM_WR_MEM_SRC_REG, 0x0);
5749 iwl_write_restricted_reg(priv, BSM_WR_MEM_DST_REG,
5750 RTC_INST_LOWER_BOUND);
5751 iwl_write_restricted_reg(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
5752
5753 /* Load bootstrap code into instruction SRAM now,
5754 * to prepare to load "initialize" uCode */
5755 iwl_write_restricted_reg(priv, BSM_WR_CTRL_REG,
5756 BSM_WR_CTRL_REG_BIT_START);
5757
5758 /* Wait for load of bootstrap uCode to finish */
5759 for (i = 0; i < 100; i++) {
5760 done = iwl_read_restricted_reg(priv, BSM_WR_CTRL_REG);
5761 if (!(done & BSM_WR_CTRL_REG_BIT_START))
5762 break;
5763 udelay(10);
5764 }
5765 if (i < 100)
5766 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
5767 else {
5768 IWL_ERROR("BSM write did not complete!\n");
5769 return -EIO;
5770 }
5771
5772 /* Enable future boot loads whenever power management unit triggers it
5773 * (e.g. when powering back up after power-save shutdown) */
5774 iwl_write_restricted_reg(priv, BSM_WR_CTRL_REG,
5775 BSM_WR_CTRL_REG_BIT_START_EN);
5776
5777 iwl_release_restricted_access(priv);
5778
5779 return 0;
5780}
5781
5782static void iwl_nic_start(struct iwl_priv *priv)
5783{
5784 /* Remove all resets to allow NIC to operate */
5785 iwl_write32(priv, CSR_RESET, 0);
5786}
5787
5788/**
5789 * iwl_read_ucode - Read uCode images from disk file.
5790 *
5791 * Copy into buffers for card to fetch via bus-mastering
5792 */
5793static int iwl_read_ucode(struct iwl_priv *priv)
5794{
5795 struct iwl_ucode *ucode;
5796 int rc = 0;
5797 const struct firmware *ucode_raw;
5798 /* firmware file name contains uCode/driver compatibility version */
5799 const char *name = "iwlwifi-3945" IWL3945_UCODE_API ".ucode";
5800 u8 *src;
5801 size_t len;
5802 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
5803
5804 /* Ask kernel firmware_class module to get the boot firmware off disk.
5805 * request_firmware() is synchronous, file is in memory on return. */
5806 rc = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
5807 if (rc < 0) {
5808 IWL_ERROR("%s firmware file req failed: Reason %d\n", name, rc);
5809 goto error;
5810 }
5811
5812 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
5813 name, ucode_raw->size);
5814
5815 /* Make sure that we got at least our header! */
5816 if (ucode_raw->size < sizeof(*ucode)) {
5817 IWL_ERROR("File size way too small!\n");
5818 rc = -EINVAL;
5819 goto err_release;
5820 }
5821
5822 /* Data from ucode file: header followed by uCode images */
5823 ucode = (void *)ucode_raw->data;
5824
5825 ver = le32_to_cpu(ucode->ver);
5826 inst_size = le32_to_cpu(ucode->inst_size);
5827 data_size = le32_to_cpu(ucode->data_size);
5828 init_size = le32_to_cpu(ucode->init_size);
5829 init_data_size = le32_to_cpu(ucode->init_data_size);
5830 boot_size = le32_to_cpu(ucode->boot_size);
5831
5832 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
5833 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
5834 inst_size);
5835 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
5836 data_size);
5837 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
5838 init_size);
5839 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
5840 init_data_size);
5841 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
5842 boot_size);
5843
5844 /* Verify size of file vs. image size info in file's header */
5845 if (ucode_raw->size < sizeof(*ucode) +
5846 inst_size + data_size + init_size +
5847 init_data_size + boot_size) {
5848
5849 IWL_DEBUG_INFO("uCode file size %d too small\n",
5850 (int)ucode_raw->size);
5851 rc = -EINVAL;
5852 goto err_release;
5853 }
5854
5855 /* Verify that uCode images will fit in card's SRAM */
5856 if (inst_size > IWL_MAX_INST_SIZE) {
5857 IWL_DEBUG_INFO("uCode instr len %d too large to fit in card\n",
5858 (int)inst_size);
5859 rc = -EINVAL;
5860 goto err_release;
5861 }
5862
5863 if (data_size > IWL_MAX_DATA_SIZE) {
5864 IWL_DEBUG_INFO("uCode data len %d too large to fit in card\n",
5865 (int)data_size);
5866 rc = -EINVAL;
5867 goto err_release;
5868 }
5869 if (init_size > IWL_MAX_INST_SIZE) {
5870 IWL_DEBUG_INFO
5871 ("uCode init instr len %d too large to fit in card\n",
5872 (int)init_size);
5873 rc = -EINVAL;
5874 goto err_release;
5875 }
5876 if (init_data_size > IWL_MAX_DATA_SIZE) {
5877 IWL_DEBUG_INFO
5878 ("uCode init data len %d too large to fit in card\n",
5879 (int)init_data_size);
5880 rc = -EINVAL;
5881 goto err_release;
5882 }
5883 if (boot_size > IWL_MAX_BSM_SIZE) {
5884 IWL_DEBUG_INFO
5885 ("uCode boot instr len %d too large to fit in bsm\n",
5886 (int)boot_size);
5887 rc = -EINVAL;
5888 goto err_release;
5889 }
5890
5891 /* Allocate ucode buffers for card's bus-master loading ... */
5892
5893 /* Runtime instructions and 2 copies of data:
5894 * 1) unmodified from disk
5895 * 2) backup cache for save/restore during power-downs */
5896 priv->ucode_code.len = inst_size;
5897 priv->ucode_code.v_addr =
5898 pci_alloc_consistent(priv->pci_dev,
5899 priv->ucode_code.len,
5900 &(priv->ucode_code.p_addr));
5901
5902 priv->ucode_data.len = data_size;
5903 priv->ucode_data.v_addr =
5904 pci_alloc_consistent(priv->pci_dev,
5905 priv->ucode_data.len,
5906 &(priv->ucode_data.p_addr));
5907
5908 priv->ucode_data_backup.len = data_size;
5909 priv->ucode_data_backup.v_addr =
5910 pci_alloc_consistent(priv->pci_dev,
5911 priv->ucode_data_backup.len,
5912 &(priv->ucode_data_backup.p_addr));
5913
5914
5915 /* Initialization instructions and data */
5916 priv->ucode_init.len = init_size;
5917 priv->ucode_init.v_addr =
5918 pci_alloc_consistent(priv->pci_dev,
5919 priv->ucode_init.len,
5920 &(priv->ucode_init.p_addr));
5921
5922 priv->ucode_init_data.len = init_data_size;
5923 priv->ucode_init_data.v_addr =
5924 pci_alloc_consistent(priv->pci_dev,
5925 priv->ucode_init_data.len,
5926 &(priv->ucode_init_data.p_addr));
5927
5928 /* Bootstrap (instructions only, no data) */
5929 priv->ucode_boot.len = boot_size;
5930 priv->ucode_boot.v_addr =
5931 pci_alloc_consistent(priv->pci_dev,
5932 priv->ucode_boot.len,
5933 &(priv->ucode_boot.p_addr));
5934
5935 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
5936 !priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr ||
5937 !priv->ucode_boot.v_addr || !priv->ucode_data_backup.v_addr)
5938 goto err_pci_alloc;
5939
5940 /* Copy images into buffers for card's bus-master reads ... */
5941
5942 /* Runtime instructions (first block of data in file) */
5943 src = &ucode->data[0];
5944 len = priv->ucode_code.len;
5945 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %d\n",
5946 (int)len);
5947 memcpy(priv->ucode_code.v_addr, src, len);
5948 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
5949 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
5950
5951 /* Runtime data (2nd block)
5952 * NOTE: Copy into backup buffer will be done in iwl_up() */
5953 src = &ucode->data[inst_size];
5954 len = priv->ucode_data.len;
5955 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %d\n",
5956 (int)len);
5957 memcpy(priv->ucode_data.v_addr, src, len);
5958 memcpy(priv->ucode_data_backup.v_addr, src, len);
5959
5960 /* Initialization instructions (3rd block) */
5961 if (init_size) {
5962 src = &ucode->data[inst_size + data_size];
5963 len = priv->ucode_init.len;
5964 IWL_DEBUG_INFO("Copying (but not loading) init instr len %d\n",
5965 (int)len);
5966 memcpy(priv->ucode_init.v_addr, src, len);
5967 }
5968
5969 /* Initialization data (4th block) */
5970 if (init_data_size) {
5971 src = &ucode->data[inst_size + data_size + init_size];
5972 len = priv->ucode_init_data.len;
5973 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
5974 (int)len);
5975 memcpy(priv->ucode_init_data.v_addr, src, len);
5976 }
5977
5978 /* Bootstrap instructions (5th block) */
5979 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
5980 len = priv->ucode_boot.len;
5981 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
5982 (int)len);
5983 memcpy(priv->ucode_boot.v_addr, src, len);
5984
5985 /* We have our copies now, allow OS release its copies */
5986 release_firmware(ucode_raw);
5987 return 0;
5988
5989 err_pci_alloc:
5990 IWL_ERROR("failed to allocate pci memory\n");
5991 rc = -ENOMEM;
5992 iwl_dealloc_ucode_pci(priv);
5993
5994 err_release:
5995 release_firmware(ucode_raw);
5996
5997 error:
5998 return rc;
5999}
6000
6001
6002/**
6003 * iwl_set_ucode_ptrs - Set uCode address location
6004 *
6005 * Tell initialization uCode where to find runtime uCode.
6006 *
6007 * BSM registers initially contain pointers to initialization uCode.
6008 * We need to replace them to load runtime uCode inst and data,
6009 * and to save runtime data when powering down.
6010 */
6011static int iwl_set_ucode_ptrs(struct iwl_priv *priv)
6012{
6013 dma_addr_t pinst;
6014 dma_addr_t pdata;
6015 int rc = 0;
6016 unsigned long flags;
6017
6018 /* bits 31:0 for 3945 */
6019 pinst = priv->ucode_code.p_addr;
6020 pdata = priv->ucode_data_backup.p_addr;
6021
6022 spin_lock_irqsave(&priv->lock, flags);
6023 rc = iwl_grab_restricted_access(priv);
6024 if (rc) {
6025 spin_unlock_irqrestore(&priv->lock, flags);
6026 return rc;
6027 }
6028
6029 /* Tell bootstrap uCode where to find image to load */
6030 iwl_write_restricted_reg(priv, BSM_DRAM_INST_PTR_REG, pinst);
6031 iwl_write_restricted_reg(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6032 iwl_write_restricted_reg(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
6033 priv->ucode_data.len);
6034
6035 /* Inst bytecount must be last to set up, bit 31 signals uCode
6036 * that all new ptr/size info is in place */
6037 iwl_write_restricted_reg(priv, BSM_DRAM_INST_BYTECOUNT_REG,
6038 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
6039
6040 iwl_release_restricted_access(priv);
6041
6042 spin_unlock_irqrestore(&priv->lock, flags);
6043
6044 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
6045
6046 return rc;
6047}
6048
6049/**
6050 * iwl_init_alive_start - Called after REPLY_ALIVE notification receieved
6051 *
6052 * Called after REPLY_ALIVE notification received from "initialize" uCode.
6053 *
6054 * The 4965 "initialize" ALIVE reply contains calibration data for:
6055 * Voltage, temperature, and MIMO tx gain correction, now stored in priv
6056 * (3945 does not contain this data).
6057 *
6058 * Tell "initialize" uCode to go ahead and load the runtime uCode.
6059*/
6060static void iwl_init_alive_start(struct iwl_priv *priv)
6061{
6062 /* Check alive response for "valid" sign from uCode */
6063 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
6064 /* We had an error bringing up the hardware, so take it
6065 * all the way back down so we can try again */
6066 IWL_DEBUG_INFO("Initialize Alive failed.\n");
6067 goto restart;
6068 }
6069
6070 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
6071 * This is a paranoid check, because we would not have gotten the
6072 * "initialize" alive if code weren't properly loaded. */
6073 if (iwl_verify_ucode(priv)) {
6074 /* Runtime instruction load was bad;
6075 * take it all the way back down so we can try again */
6076 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
6077 goto restart;
6078 }
6079
6080 /* Send pointers to protocol/runtime uCode image ... init code will
6081 * load and launch runtime uCode, which will send us another "Alive"
6082 * notification. */
6083 IWL_DEBUG_INFO("Initialization Alive received.\n");
6084 if (iwl_set_ucode_ptrs(priv)) {
6085 /* Runtime instruction load won't happen;
6086 * take it all the way back down so we can try again */
6087 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
6088 goto restart;
6089 }
6090 return;
6091
6092 restart:
6093 queue_work(priv->workqueue, &priv->restart);
6094}
6095
6096
6097/**
6098 * iwl_alive_start - called after REPLY_ALIVE notification received
6099 * from protocol/runtime uCode (initialization uCode's
6100 * Alive gets handled by iwl_init_alive_start()).
6101 */
6102static void iwl_alive_start(struct iwl_priv *priv)
6103{
6104 int rc = 0;
6105 int thermal_spin = 0;
6106 u32 rfkill;
6107
6108 IWL_DEBUG_INFO("Runtime Alive received.\n");
6109
6110 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
6111 /* We had an error bringing up the hardware, so take it
6112 * all the way back down so we can try again */
6113 IWL_DEBUG_INFO("Alive failed.\n");
6114 goto restart;
6115 }
6116
6117 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
6118 * This is a paranoid check, because we would not have gotten the
6119 * "runtime" alive if code weren't properly loaded. */
6120 if (iwl_verify_ucode(priv)) {
6121 /* Runtime instruction load was bad;
6122 * take it all the way back down so we can try again */
6123 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
6124 goto restart;
6125 }
6126
6127 iwl_clear_stations_table(priv);
6128
6129 rc = iwl_grab_restricted_access(priv);
6130 if (rc) {
6131 IWL_WARNING("Can not read rfkill status from adapter\n");
6132 return;
6133 }
6134
6135 rfkill = iwl_read_restricted_reg(priv, APMG_RFKILL_REG);
6136 IWL_DEBUG_INFO("RFKILL status: 0x%x\n", rfkill);
6137 iwl_release_restricted_access(priv);
6138
6139 if (rfkill & 0x1) {
6140 clear_bit(STATUS_RF_KILL_HW, &priv->status);
6141 /* if rfkill is not on, then wait for thermal
6142 * sensor in adapter to kick in */
6143 while (iwl_hw_get_temperature(priv) == 0) {
6144 thermal_spin++;
6145 udelay(10);
6146 }
6147
6148 if (thermal_spin)
6149 IWL_DEBUG_INFO("Thermal calibration took %dus\n",
6150 thermal_spin * 10);
6151 } else
6152 set_bit(STATUS_RF_KILL_HW, &priv->status);
6153
6154 /* After the ALIVE response, we can process host commands */
6155 set_bit(STATUS_ALIVE, &priv->status);
6156
6157 /* Clear out the uCode error bit if it is set */
6158 clear_bit(STATUS_FW_ERROR, &priv->status);
6159
6160 rc = iwl_init_channel_map(priv);
6161 if (rc) {
6162 IWL_ERROR("initializing regulatory failed: %d\n", rc);
6163 return;
6164 }
6165
6166 iwl_init_geos(priv);
6167
6168 if (iwl_is_rfkill(priv))
6169 return;
6170
6171 if (!priv->mac80211_registered) {
6172 /* Unlock so any user space entry points can call back into
6173 * the driver without a deadlock... */
6174 mutex_unlock(&priv->mutex);
6175 iwl_rate_control_register(priv->hw);
6176 rc = ieee80211_register_hw(priv->hw);
6177 priv->hw->conf.beacon_int = 100;
6178 mutex_lock(&priv->mutex);
6179
6180 if (rc) {
6181 IWL_ERROR("Failed to register network "
6182 "device (error %d)\n", rc);
6183 return;
6184 }
6185
6186 priv->mac80211_registered = 1;
6187
6188 iwl_reset_channel_flag(priv);
6189 } else
6190 ieee80211_start_queues(priv->hw);
6191
6192 priv->active_rate = priv->rates_mask;
6193 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
6194
6195 iwl_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
6196
6197 if (iwl_is_associated(priv)) {
6198 struct iwl_rxon_cmd *active_rxon =
6199 (struct iwl_rxon_cmd *)(&priv->active_rxon);
6200
6201 memcpy(&priv->staging_rxon, &priv->active_rxon,
6202 sizeof(priv->staging_rxon));
6203 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6204 } else {
6205 /* Initialize our rx_config data */
6206 iwl_connection_init_rx_config(priv);
6207 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
6208 }
6209
6210 /* Configure BT coexistence */
6211 iwl_send_bt_config(priv);
6212
6213 /* Configure the adapter for unassociated operation */
6214 iwl_commit_rxon(priv);
6215
6216 /* At this point, the NIC is initialized and operational */
6217 priv->notif_missed_beacons = 0;
6218 set_bit(STATUS_READY, &priv->status);
6219
6220 iwl3945_reg_txpower_periodic(priv);
6221
6222 IWL_DEBUG_INFO("ALIVE processing complete.\n");
6223
6224 if (priv->error_recovering)
6225 iwl_error_recovery(priv);
6226
6227 return;
6228
6229 restart:
6230 queue_work(priv->workqueue, &priv->restart);
6231}
6232
6233static void iwl_cancel_deferred_work(struct iwl_priv *priv);
6234
6235static void __iwl_down(struct iwl_priv *priv)
6236{
6237 unsigned long flags;
6238 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
6239 struct ieee80211_conf *conf = NULL;
6240
6241 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
6242
6243 conf = ieee80211_get_hw_conf(priv->hw);
6244
6245 if (!exit_pending)
6246 set_bit(STATUS_EXIT_PENDING, &priv->status);
6247
6248 iwl_clear_stations_table(priv);
6249
6250 /* Unblock any waiting calls */
6251 wake_up_interruptible_all(&priv->wait_command_queue);
6252
6253 iwl_cancel_deferred_work(priv);
6254
6255 /* Wipe out the EXIT_PENDING status bit if we are not actually
6256 * exiting the module */
6257 if (!exit_pending)
6258 clear_bit(STATUS_EXIT_PENDING, &priv->status);
6259
6260 /* stop and reset the on-board processor */
6261 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
6262
6263 /* tell the device to stop sending interrupts */
6264 iwl_disable_interrupts(priv);
6265
6266 if (priv->mac80211_registered)
6267 ieee80211_stop_queues(priv->hw);
6268
6269 /* If we have not previously called iwl_init() then
6270 * clear all bits but the RF Kill and SUSPEND bits and return */
6271 if (!iwl_is_init(priv)) {
6272 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6273 STATUS_RF_KILL_HW |
6274 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6275 STATUS_RF_KILL_SW |
6276 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6277 STATUS_IN_SUSPEND;
6278 goto exit;
6279 }
6280
6281 /* ...otherwise clear out all the status bits but the RF Kill and
6282 * SUSPEND bits and continue taking the NIC down. */
6283 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6284 STATUS_RF_KILL_HW |
6285 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6286 STATUS_RF_KILL_SW |
6287 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6288 STATUS_IN_SUSPEND |
6289 test_bit(STATUS_FW_ERROR, &priv->status) <<
6290 STATUS_FW_ERROR;
6291
6292 spin_lock_irqsave(&priv->lock, flags);
6293 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
6294 spin_unlock_irqrestore(&priv->lock, flags);
6295
6296 iwl_hw_txq_ctx_stop(priv);
6297 iwl_hw_rxq_stop(priv);
6298
6299 spin_lock_irqsave(&priv->lock, flags);
6300 if (!iwl_grab_restricted_access(priv)) {
6301 iwl_write_restricted_reg(priv, APMG_CLK_DIS_REG,
6302 APMG_CLK_VAL_DMA_CLK_RQT);
6303 iwl_release_restricted_access(priv);
6304 }
6305 spin_unlock_irqrestore(&priv->lock, flags);
6306
6307 udelay(5);
6308
6309 iwl_hw_nic_stop_master(priv);
6310 iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
6311 iwl_hw_nic_reset(priv);
6312
6313 exit:
6314 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
6315
6316 if (priv->ibss_beacon)
6317 dev_kfree_skb(priv->ibss_beacon);
6318 priv->ibss_beacon = NULL;
6319
6320 /* clear out any free frames */
6321 iwl_clear_free_frames(priv);
6322}
6323
6324static void iwl_down(struct iwl_priv *priv)
6325{
6326 mutex_lock(&priv->mutex);
6327 __iwl_down(priv);
6328 mutex_unlock(&priv->mutex);
6329}
6330
6331#define MAX_HW_RESTARTS 5
6332
6333static int __iwl_up(struct iwl_priv *priv)
6334{
0795af57 6335 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 6336 int rc, i;
6337
6338 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6339 IWL_WARNING("Exit pending; will not bring the NIC up\n");
6340 return -EIO;
6341 }
6342
6343 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
6344 IWL_WARNING("Radio disabled by SW RF kill (module "
6345 "parameter)\n");
6346 return 0;
6347 }
6348
6349 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
6350
6351 rc = iwl_hw_nic_init(priv);
6352 if (rc) {
6353 IWL_ERROR("Unable to int nic\n");
6354 return rc;
6355 }
6356
6357 /* make sure rfkill handshake bits are cleared */
6358 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6359 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
6360 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
6361
6362 /* clear (again), then enable host interrupts */
6363 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
6364 iwl_enable_interrupts(priv);
6365
6366 /* really make sure rfkill handshake bits are cleared */
6367 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6368 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6369
6370 /* Copy original ucode data image from disk into backup cache.
6371 * This will be used to initialize the on-board processor's
6372 * data SRAM for a clean start when the runtime program first loads. */
6373 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
6374 priv->ucode_data.len);
6375
6376 for (i = 0; i < MAX_HW_RESTARTS; i++) {
6377
6378 iwl_clear_stations_table(priv);
6379
6380 /* load bootstrap state machine,
6381 * load bootstrap program into processor's memory,
6382 * prepare to load the "initialize" uCode */
6383 rc = iwl_load_bsm(priv);
6384
6385 if (rc) {
6386 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
6387 continue;
6388 }
6389
6390 /* start card; "initialize" will load runtime ucode */
6391 iwl_nic_start(priv);
6392
6393 /* MAC Address location in EEPROM same for 3945/4965 */
6394 get_eeprom_mac(priv, priv->mac_addr);
0795af57
JP		 6395 IWL_DEBUG_INFO("MAC address: %s\n",
6396 print_mac(mac, priv->mac_addr));
b481de9c
ZY		 6397
6398 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
6399
6400 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
6401
6402 return 0;
6403 }
6404
6405 set_bit(STATUS_EXIT_PENDING, &priv->status);
6406 __iwl_down(priv);
6407
6408 /* tried to restart and config the device for as long as our
6409 * patience could withstand */
6410 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
6411 return -EIO;
6412}
6413
6414
6415/*****************************************************************************
6416 *
6417 * Workqueue callbacks
6418 *
6419 *****************************************************************************/
6420
6421static void iwl_bg_init_alive_start(struct work_struct *data)
6422{
6423 struct iwl_priv *priv =
6424 container_of(data, struct iwl_priv, init_alive_start.work);
6425
6426 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6427 return;
6428
6429 mutex_lock(&priv->mutex);
6430 iwl_init_alive_start(priv);
6431 mutex_unlock(&priv->mutex);
6432}
6433
6434static void iwl_bg_alive_start(struct work_struct *data)
6435{
6436 struct iwl_priv *priv =
6437 container_of(data, struct iwl_priv, alive_start.work);
6438
6439 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6440 return;
6441
6442 mutex_lock(&priv->mutex);
6443 iwl_alive_start(priv);
6444 mutex_unlock(&priv->mutex);
6445}
6446
6447static void iwl_bg_rf_kill(struct work_struct *work)
6448{
6449 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
6450
6451 wake_up_interruptible(&priv->wait_command_queue);
6452
6453 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6454 return;
6455
6456 mutex_lock(&priv->mutex);
6457
6458 if (!iwl_is_rfkill(priv)) {
6459 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
6460 "HW and/or SW RF Kill no longer active, restarting "
6461 "device\n");
6462 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6463 queue_work(priv->workqueue, &priv->restart);
6464 } else {
6465
6466 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6467 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6468 "disabled by SW switch\n");
6469 else
6470 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6471 "Kill switch must be turned off for "
6472 "wireless networking to work.\n");
6473 }
6474 mutex_unlock(&priv->mutex);
6475}
6476
6477#define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6478
6479static void iwl_bg_scan_check(struct work_struct *data)
6480{
6481 struct iwl_priv *priv =
6482 container_of(data, struct iwl_priv, scan_check.work);
6483
6484 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6485 return;
6486
6487 mutex_lock(&priv->mutex);
6488 if (test_bit(STATUS_SCANNING, &priv->status) ||
6489 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6490 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6491 "Scan completion watchdog resetting adapter (%dms)\n",
6492 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6493 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6494 queue_work(priv->workqueue, &priv->restart);
6495 }
6496 mutex_unlock(&priv->mutex);
6497}
6498
6499static void iwl_bg_request_scan(struct work_struct *data)
6500{
6501 struct iwl_priv *priv =
6502 container_of(data, struct iwl_priv, request_scan);
6503 struct iwl_host_cmd cmd = {
6504 .id = REPLY_SCAN_CMD,
6505 .len = sizeof(struct iwl_scan_cmd),
6506 .meta.flags = CMD_SIZE_HUGE,
6507 };
6508 int rc = 0;
6509 struct iwl_scan_cmd *scan;
6510 struct ieee80211_conf *conf = NULL;
6511 u8 direct_mask;
6512 int phymode;
6513
6514 conf = ieee80211_get_hw_conf(priv->hw);
6515
6516 mutex_lock(&priv->mutex);
6517
6518 if (!iwl_is_ready(priv)) {
6519 IWL_WARNING("request scan called when driver not ready.\n");
6520 goto done;
6521 }
6522
6523 /* Make sure the scan wasn't cancelled before this queued work
6524 * was given the chance to run... */
6525 if (!test_bit(STATUS_SCANNING, &priv->status))
6526 goto done;
6527
6528 /* This should never be called or scheduled if there is currently
6529 * a scan active in the hardware. */
6530 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6531 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6532 "Ignoring second request.\n");
6533 rc = -EIO;
6534 goto done;
6535 }
6536
6537 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6538 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6539 goto done;
6540 }
6541
6542 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6543 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
6544 goto done;
6545 }
6546
6547 if (iwl_is_rfkill(priv)) {
6548 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6549 goto done;
6550 }
6551
6552 if (!test_bit(STATUS_READY, &priv->status)) {
6553 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
6554 goto done;
6555 }
6556
6557 if (!priv->scan_bands) {
6558 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6559 goto done;
6560 }
6561
6562 if (!priv->scan) {
6563 priv->scan = kmalloc(sizeof(struct iwl_scan_cmd) +
6564 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
6565 if (!priv->scan) {
6566 rc = -ENOMEM;
6567 goto done;
6568 }
6569 }
6570 scan = priv->scan;
6571 memset(scan, 0, sizeof(struct iwl_scan_cmd) + IWL_MAX_SCAN_SIZE);
6572
6573 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6574 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6575
6576 if (iwl_is_associated(priv)) {
6577 u16 interval = 0;
6578 u32 extra;
6579 u32 suspend_time = 100;
6580 u32 scan_suspend_time = 100;
6581 unsigned long flags;
6582
6583 IWL_DEBUG_INFO("Scanning while associated...\n");
6584
6585 spin_lock_irqsave(&priv->lock, flags);
6586 interval = priv->beacon_int;
6587 spin_unlock_irqrestore(&priv->lock, flags);
6588
6589 scan->suspend_time = 0;
6590 scan->max_out_time = cpu_to_le32(600 * 1024);
6591 if (!interval)
6592 interval = suspend_time;
6593 /*
6594 * suspend time format:
6595 * 0-19: beacon interval in usec (time before exec.)
6596 * 20-23: 0
6597 * 24-31: number of beacons (suspend between channels)
6598 */
6599
6600 extra = (suspend_time / interval) << 24;
6601 scan_suspend_time = 0xFF0FFFFF &
6602 (extra | ((suspend_time % interval) * 1024));
6603
6604 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6605 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6606 scan_suspend_time, interval);
6607 }
6608
6609 /* We should add the ability for user to lock to PASSIVE ONLY */
6610 if (priv->one_direct_scan) {
6611 IWL_DEBUG_SCAN
6612 ("Kicking off one direct scan for '%s'\n",
6613 iwl_escape_essid(priv->direct_ssid,
6614 priv->direct_ssid_len));
6615 scan->direct_scan[0].id = WLAN_EID_SSID;
6616 scan->direct_scan[0].len = priv->direct_ssid_len;
6617 memcpy(scan->direct_scan[0].ssid,
6618 priv->direct_ssid, priv->direct_ssid_len);
6619 direct_mask = 1;
6620 } else if (!iwl_is_associated(priv)) {
6621 scan->direct_scan[0].id = WLAN_EID_SSID;
6622 scan->direct_scan[0].len = priv->essid_len;
6623 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
6624 direct_mask = 1;
6625 } else
6626 direct_mask = 0;
6627
6628 /* We don't build a direct scan probe request; the uCode will do
6629 * that based on the direct_mask added to each channel entry */
6630 scan->tx_cmd.len = cpu_to_le16(
6631 iwl_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
6632 IWL_MAX_SCAN_SIZE - sizeof(scan), 0));
6633 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6634 scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6635 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6636
6637 /* flags + rate selection */
6638
6639 switch (priv->scan_bands) {
6640 case 2:
6641 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6642 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
6643 scan->good_CRC_th = 0;
6644 phymode = MODE_IEEE80211G;
6645 break;
6646
6647 case 1:
6648 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
6649 scan->good_CRC_th = IWL_GOOD_CRC_TH;
6650 phymode = MODE_IEEE80211A;
6651 break;
6652
6653 default:
6654 IWL_WARNING("Invalid scan band count\n");
6655 goto done;
6656 }
6657
6658 /* select Rx antennas */
6659 scan->flags |= iwl3945_get_antenna_flags(priv);
6660
6661 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
6662 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
6663
6664 if (direct_mask)
6665 IWL_DEBUG_SCAN
6666 ("Initiating direct scan for %s.\n",
6667 iwl_escape_essid(priv->essid, priv->essid_len));
6668 else
6669 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
6670
6671 scan->channel_count =
6672 iwl_get_channels_for_scan(
6673 priv, phymode, 1, /* active */
6674 direct_mask,
6675 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6676
6677 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
6678 scan->channel_count * sizeof(struct iwl_scan_channel);
6679 cmd.data = scan;
6680 scan->len = cpu_to_le16(cmd.len);
6681
6682 set_bit(STATUS_SCAN_HW, &priv->status);
6683 rc = iwl_send_cmd_sync(priv, &cmd);
6684 if (rc)
6685 goto done;
6686
6687 queue_delayed_work(priv->workqueue, &priv->scan_check,
6688 IWL_SCAN_CHECK_WATCHDOG);
6689
6690 mutex_unlock(&priv->mutex);
6691 return;
6692
6693 done:
6694 /* inform mac80211 sacn aborted */
6695 queue_work(priv->workqueue, &priv->scan_completed);
6696 mutex_unlock(&priv->mutex);
6697}
6698
6699static void iwl_bg_up(struct work_struct *data)
6700{
6701 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
6702
6703 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6704 return;
6705
6706 mutex_lock(&priv->mutex);
6707 __iwl_up(priv);
6708 mutex_unlock(&priv->mutex);
6709}
6710
6711static void iwl_bg_restart(struct work_struct *data)
6712{
6713 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
6714
6715 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6716 return;
6717
6718 iwl_down(priv);
6719 queue_work(priv->workqueue, &priv->up);
6720}
6721
6722static void iwl_bg_rx_replenish(struct work_struct *data)
6723{
6724 struct iwl_priv *priv =
6725 container_of(data, struct iwl_priv, rx_replenish);
6726
6727 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6728 return;
6729
6730 mutex_lock(&priv->mutex);
6731 iwl_rx_replenish(priv);
6732 mutex_unlock(&priv->mutex);
6733}
6734
6735static void iwl_bg_post_associate(struct work_struct *data)
6736{
6737 struct iwl_priv *priv = container_of(data, struct iwl_priv,
6738 post_associate.work);
6739
6740 int rc = 0;
6741 struct ieee80211_conf *conf = NULL;
0795af57 6742 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 6743
6744 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6745 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
6746 return;
6747 }
6748
6749
0795af57
JP		 6750 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
6751 priv->assoc_id,
6752 print_mac(mac, priv->active_rxon.bssid_addr));
b481de9c
ZY		 6753
6754 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6755 return;
6756
6757 mutex_lock(&priv->mutex);
6758
6759 conf = ieee80211_get_hw_conf(priv->hw);
6760
6761 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6762 iwl_commit_rxon(priv);
6763
6764 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
6765 iwl_setup_rxon_timing(priv);
6766 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6767 sizeof(priv->rxon_timing), &priv->rxon_timing);
6768 if (rc)
6769 IWL_WARNING("REPLY_RXON_TIMING failed - "
6770 "Attempting to continue.\n");
6771
6772 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6773
6774 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6775
6776 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6777 priv->assoc_id, priv->beacon_int);
6778
6779 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6780 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6781 else
6782 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6783
6784 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6785 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
6786 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
6787 else
6788 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6789
6790 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6791 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6792
6793 }
6794
6795 iwl_commit_rxon(priv);
6796
6797 switch (priv->iw_mode) {
6798 case IEEE80211_IF_TYPE_STA:
6799 iwl_rate_scale_init(priv->hw, IWL_AP_ID);
6800 break;
6801
6802 case IEEE80211_IF_TYPE_IBSS:
6803
6804 /* clear out the station table */
6805 iwl_clear_stations_table(priv);
6806
6807 iwl_rxon_add_station(priv, BROADCAST_ADDR, 0);
6808 iwl_rxon_add_station(priv, priv->bssid, 0);
6809 iwl3945_sync_sta(priv, IWL_STA_ID,
6810 (priv->phymode == MODE_IEEE80211A)?
6811 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
6812 CMD_ASYNC);
6813 iwl_rate_scale_init(priv->hw, IWL_STA_ID);
6814 iwl_send_beacon_cmd(priv);
6815
6816 break;
6817
6818 default:
6819 IWL_ERROR("%s Should not be called in %d mode\n",
6820 __FUNCTION__, priv->iw_mode);
6821 break;
6822 }
6823
6824 iwl_sequence_reset(priv);
6825
6826#ifdef CONFIG_IWLWIFI_QOS
6827 iwl_activate_qos(priv, 0);
6828#endif /* CONFIG_IWLWIFI_QOS */
6829 mutex_unlock(&priv->mutex);
6830}
6831
6832static void iwl_bg_abort_scan(struct work_struct *work)
6833{
6834 struct iwl_priv *priv = container_of(work, struct iwl_priv,
6835 abort_scan);
6836
6837 if (!iwl_is_ready(priv))
6838 return;
6839
6840 mutex_lock(&priv->mutex);
6841
6842 set_bit(STATUS_SCAN_ABORTING, &priv->status);
6843 iwl_send_scan_abort(priv);
6844
6845 mutex_unlock(&priv->mutex);
6846}
6847
6848static void iwl_bg_scan_completed(struct work_struct *work)
6849{
6850 struct iwl_priv *priv =
6851 container_of(work, struct iwl_priv, scan_completed);
6852
6853 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
6854
6855 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6856 return;
6857
6858 ieee80211_scan_completed(priv->hw);
6859
6860 /* Since setting the TXPOWER may have been deferred while
6861 * performing the scan, fire one off */
6862 mutex_lock(&priv->mutex);
6863 iwl_hw_reg_send_txpower(priv);
6864 mutex_unlock(&priv->mutex);
6865}
6866
6867/*****************************************************************************
6868 *
6869 * mac80211 entry point functions
6870 *
6871 *****************************************************************************/
6872
4150c572 6873static int iwl_mac_start(struct ieee80211_hw *hw)
b481de9c
ZY		 6874{
6875 struct iwl_priv *priv = hw->priv;
6876
6877 IWL_DEBUG_MAC80211("enter\n");
6878
6879 /* we should be verifying the device is ready to be opened */
6880 mutex_lock(&priv->mutex);
6881
6882 priv->is_open = 1;
6883
6884 if (!iwl_is_rfkill(priv))
6885 ieee80211_start_queues(priv->hw);
6886
6887 mutex_unlock(&priv->mutex);
6888 IWL_DEBUG_MAC80211("leave\n");
6889 return 0;
6890}
6891
4150c572 6892static void iwl_mac_stop(struct ieee80211_hw *hw)
b481de9c
ZY		 6893{
6894 struct iwl_priv *priv = hw->priv;
6895
6896 IWL_DEBUG_MAC80211("enter\n");
6897 priv->is_open = 0;
6898 /*netif_stop_queue(dev); */
6899 flush_workqueue(priv->workqueue);
6900 IWL_DEBUG_MAC80211("leave\n");
b481de9c
ZY		 6901}
6902
6903static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
6904 struct ieee80211_tx_control *ctl)
6905{
6906 struct iwl_priv *priv = hw->priv;
6907
6908 IWL_DEBUG_MAC80211("enter\n");
6909
6910 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
6911 IWL_DEBUG_MAC80211("leave - monitor\n");
6912 return -1;
6913 }
6914
6915 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
6916 ctl->tx_rate);
6917
6918 if (iwl_tx_skb(priv, skb, ctl))
6919 dev_kfree_skb_any(skb);
6920
6921 IWL_DEBUG_MAC80211("leave\n");
6922 return 0;
6923}
6924
6925static int iwl_mac_add_interface(struct ieee80211_hw *hw,
6926 struct ieee80211_if_init_conf *conf)
6927{
6928 struct iwl_priv *priv = hw->priv;
6929 unsigned long flags;
0795af57 6930 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 6931
6932 IWL_DEBUG_MAC80211("enter: id %d, type %d\n", conf->if_id, conf->type);
6933 if (conf->mac_addr)
0795af57
JP		 6934 IWL_DEBUG_MAC80211("enter: MAC %s\n",
6935 print_mac(mac, conf->mac_addr));
b481de9c
ZY		 6936
6937 if (priv->interface_id) {
6938 IWL_DEBUG_MAC80211("leave - interface_id != 0\n");
6939 return 0;
6940 }
6941
6942 spin_lock_irqsave(&priv->lock, flags);
6943 priv->interface_id = conf->if_id;
6944
6945 spin_unlock_irqrestore(&priv->lock, flags);
6946
6947 mutex_lock(&priv->mutex);
6948 iwl_set_mode(priv, conf->type);
6949
6950 IWL_DEBUG_MAC80211("leave\n");
6951 mutex_unlock(&priv->mutex);
6952
6953 return 0;
6954}
6955
6956/**
6957 * iwl_mac_config - mac80211 config callback
6958 *
6959 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
6960 * be set inappropriately and the driver currently sets the hardware up to
6961 * use it whenever needed.
6962 */
6963static int iwl_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
6964{
6965 struct iwl_priv *priv = hw->priv;
6966 const struct iwl_channel_info *ch_info;
6967 unsigned long flags;
6968
6969 mutex_lock(&priv->mutex);
6970 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel);
6971
6972 if (!iwl_is_ready(priv)) {
6973 IWL_DEBUG_MAC80211("leave - not ready\n");
6974 mutex_unlock(&priv->mutex);
6975 return -EIO;
6976 }
6977
6978 /* TODO: Figure out how to get ieee80211_local->sta_scanning w/ only
6979 * what is exposed through include/ declrations */
6980 if (unlikely(!iwl_param_disable_hw_scan &&
6981 test_bit(STATUS_SCANNING, &priv->status))) {
6982 IWL_DEBUG_MAC80211("leave - scanning\n");
6983 mutex_unlock(&priv->mutex);
6984 return 0;
6985 }
6986
6987 spin_lock_irqsave(&priv->lock, flags);
6988
6989 ch_info = iwl_get_channel_info(priv, conf->phymode, conf->channel);
6990 if (!is_channel_valid(ch_info)) {
6991 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n",
6992 conf->channel, conf->phymode);
6993 IWL_DEBUG_MAC80211("leave - invalid channel\n");
6994 spin_unlock_irqrestore(&priv->lock, flags);
6995 mutex_unlock(&priv->mutex);
6996 return -EINVAL;
6997 }
6998
6999 iwl_set_rxon_channel(priv, conf->phymode, conf->channel);
7000
7001 iwl_set_flags_for_phymode(priv, conf->phymode);
7002
7003 /* The list of supported rates and rate mask can be different
7004 * for each phymode; since the phymode may have changed, reset
7005 * the rate mask to what mac80211 lists */
7006 iwl_set_rate(priv);
7007
7008 spin_unlock_irqrestore(&priv->lock, flags);
7009
7010#ifdef IEEE80211_CONF_CHANNEL_SWITCH
7011 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
7012 iwl_hw_channel_switch(priv, conf->channel);
7013 mutex_unlock(&priv->mutex);
7014 return 0;
7015 }
7016#endif
7017
7018 iwl_radio_kill_sw(priv, !conf->radio_enabled);
7019
7020 if (!conf->radio_enabled) {
7021 IWL_DEBUG_MAC80211("leave - radio disabled\n");
7022 mutex_unlock(&priv->mutex);
7023 return 0;
7024 }
7025
7026 if (iwl_is_rfkill(priv)) {
7027 IWL_DEBUG_MAC80211("leave - RF kill\n");
7028 mutex_unlock(&priv->mutex);
7029 return -EIO;
7030 }
7031
7032 iwl_set_rate(priv);
7033
7034 if (memcmp(&priv->active_rxon,
7035 &priv->staging_rxon, sizeof(priv->staging_rxon)))
7036 iwl_commit_rxon(priv);
7037 else
7038 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
7039
7040 IWL_DEBUG_MAC80211("leave\n");
7041
7042 mutex_unlock(&priv->mutex);
7043
7044 return 0;
7045}
7046
7047static void iwl_config_ap(struct iwl_priv *priv)
7048{
7049 int rc = 0;
7050
7051 if (priv->status & STATUS_EXIT_PENDING)
7052 return;
7053
7054 /* The following should be done only at AP bring up */
7055 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
7056
7057 /* RXON - unassoc (to set timing command) */
7058 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7059 iwl_commit_rxon(priv);
7060
7061 /* RXON Timing */
7062 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
7063 iwl_setup_rxon_timing(priv);
7064 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7065 sizeof(priv->rxon_timing), &priv->rxon_timing);
7066 if (rc)
7067 IWL_WARNING("REPLY_RXON_TIMING failed - "
7068 "Attempting to continue.\n");
7069
7070 /* FIXME: what should be the assoc_id for AP? */
7071 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7072 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7073 priv->staging_rxon.flags |=
7074 RXON_FLG_SHORT_PREAMBLE_MSK;
7075 else
7076 priv->staging_rxon.flags &=
7077 ~RXON_FLG_SHORT_PREAMBLE_MSK;
7078
7079 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7080 if (priv->assoc_capability &
7081 WLAN_CAPABILITY_SHORT_SLOT_TIME)
7082 priv->staging_rxon.flags |=
7083 RXON_FLG_SHORT_SLOT_MSK;
7084 else
7085 priv->staging_rxon.flags &=
7086 ~RXON_FLG_SHORT_SLOT_MSK;
7087
7088 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7089 priv->staging_rxon.flags &=
7090 ~RXON_FLG_SHORT_SLOT_MSK;
7091 }
7092 /* restore RXON assoc */
7093 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7094 iwl_commit_rxon(priv);
7095 iwl_rxon_add_station(priv, BROADCAST_ADDR, 0);
7096 iwl_send_beacon_cmd(priv);
7097 } else
7098 iwl_send_beacon_cmd(priv);
7099
7100 /* FIXME - we need to add code here to detect a totally new
7101 * configuration, reset the AP, unassoc, rxon timing, assoc,
7102 * clear sta table, add BCAST sta... */
7103}
7104
7105static int iwl_mac_config_interface(struct ieee80211_hw *hw, int if_id,
7106 struct ieee80211_if_conf *conf)
7107{
7108 struct iwl_priv *priv = hw->priv;
0795af57 7109 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 7110 unsigned long flags;
7111 int rc;
7112
7113 if (conf == NULL)
7114 return -EIO;
7115
4150c572
JB		 7116 /* XXX: this MUST use conf->mac_addr */
7117
b481de9c
ZY		 7118 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
7119 (!conf->beacon || !conf->ssid_len)) {
7120 IWL_DEBUG_MAC80211
7121 ("Leaving in AP mode because HostAPD is not ready.\n");
7122 return 0;
7123 }
7124
7125 mutex_lock(&priv->mutex);
7126
7127 IWL_DEBUG_MAC80211("enter: interface id %d\n", if_id);
7128 if (conf->bssid)
0795af57
JP		 7129 IWL_DEBUG_MAC80211("bssid: %s\n",
7130 print_mac(mac, conf->bssid));
b481de9c 7131
4150c572
JB		 7132/*
7133 * very dubious code was here; the probe filtering flag is never set:
7134 *
b481de9c
ZY		 7135 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7136 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
4150c572
JB		 7137 */
7138 if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) {
b481de9c
ZY		 7139 IWL_DEBUG_MAC80211("leave - scanning\n");
7140 mutex_unlock(&priv->mutex);
7141 return 0;
7142 }
7143
7144 if (priv->interface_id != if_id) {
7145 IWL_DEBUG_MAC80211("leave - interface_id != if_id\n");
7146 mutex_unlock(&priv->mutex);
7147 return 0;
7148 }
7149
7150 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7151 if (!conf->bssid) {
7152 conf->bssid = priv->mac_addr;
7153 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
0795af57
JP		 7154 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
7155 print_mac(mac, conf->bssid));
b481de9c
ZY		 7156 }
7157 if (priv->ibss_beacon)
7158 dev_kfree_skb(priv->ibss_beacon);
7159
7160 priv->ibss_beacon = conf->beacon;
7161 }
7162
7163 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
7164 !is_multicast_ether_addr(conf->bssid)) {
7165 /* If there is currently a HW scan going on in the background
7166 * then we need to cancel it else the RXON below will fail. */
7167 if (iwl_scan_cancel_timeout(priv, 100)) {
7168 IWL_WARNING("Aborted scan still in progress "
7169 "after 100ms\n");
7170 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7171 mutex_unlock(&priv->mutex);
7172 return -EAGAIN;
7173 }
7174 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
7175
7176 /* TODO: Audit driver for usage of these members and see
7177 * if mac80211 deprecates them (priv->bssid looks like it
7178 * shouldn't be there, but I haven't scanned the IBSS code
7179 * to verify) - jpk */
7180 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
7181
7182 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7183 iwl_config_ap(priv);
7184 else {
7185 priv->staging_rxon.filter_flags |=
7186 RXON_FILTER_ASSOC_MSK;
7187 rc = iwl_commit_rxon(priv);
7188 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
7189 iwl_rxon_add_station(
7190 priv, priv->active_rxon.bssid_addr, 1);
7191 }
7192
7193 } else {
7194 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7195 iwl_commit_rxon(priv);
7196 }
7197
7198 spin_lock_irqsave(&priv->lock, flags);
7199 if (!conf->ssid_len)
7200 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7201 else
7202 memcpy(priv->essid, conf->ssid, conf->ssid_len);
7203
7204 priv->essid_len = conf->ssid_len;
7205 spin_unlock_irqrestore(&priv->lock, flags);
7206
7207 IWL_DEBUG_MAC80211("leave\n");
7208 mutex_unlock(&priv->mutex);
7209
7210 return 0;
7211}
7212
4150c572
JB		 7213static void iwl_configure_filter(struct ieee80211_hw *hw,
7214 unsigned int changed_flags,
7215 unsigned int *total_flags,
7216 int mc_count, struct dev_addr_list *mc_list)
7217{
7218 /*
7219 * XXX: dummy
7220 * see also iwl_connection_init_rx_config
7221 */
7222 *total_flags = 0;
7223}
7224
b481de9c
ZY		 7225static void iwl_mac_remove_interface(struct ieee80211_hw *hw,
7226 struct ieee80211_if_init_conf *conf)
7227{
7228 struct iwl_priv *priv = hw->priv;
7229
7230 IWL_DEBUG_MAC80211("enter\n");
7231
7232 mutex_lock(&priv->mutex);
7233 if (priv->interface_id == conf->if_id) {
7234 priv->interface_id = 0;
7235 memset(priv->bssid, 0, ETH_ALEN);
7236 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7237 priv->essid_len = 0;
7238 }
7239 mutex_unlock(&priv->mutex);
7240
7241 IWL_DEBUG_MAC80211("leave\n");
7242
7243}
7244
7245#define IWL_DELAY_NEXT_SCAN (HZ*2)
7246static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
7247{
7248 int rc = 0;
7249 unsigned long flags;
7250 struct iwl_priv *priv = hw->priv;
7251
7252 IWL_DEBUG_MAC80211("enter\n");
7253
7254 spin_lock_irqsave(&priv->lock, flags);
7255
7256 if (!iwl_is_ready_rf(priv)) {
7257 rc = -EIO;
7258 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7259 goto out_unlock;
7260 }
7261
7262 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
7263 rc = -EIO;
7264 IWL_ERROR("ERROR: APs don't scan\n");
7265 goto out_unlock;
7266 }
7267
7268 /* if we just finished scan ask for delay */
7269 if (priv->last_scan_jiffies &&
7270 time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN,
7271 jiffies)) {
7272 rc = -EAGAIN;
7273 goto out_unlock;
7274 }
7275 if (len) {
7276 IWL_DEBUG_SCAN("direct scan for "
7277 "%s [%d]\n ",
7278 iwl_escape_essid(ssid, len), (int)len);
7279
7280 priv->one_direct_scan = 1;
7281 priv->direct_ssid_len = (u8)
7282 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7283 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
7284 }
7285
7286 rc = iwl_scan_initiate(priv);
7287
7288 IWL_DEBUG_MAC80211("leave\n");
7289
7290out_unlock:
7291 spin_unlock_irqrestore(&priv->lock, flags);
7292
7293 return rc;
7294}
7295
7296static int iwl_mac_set_key(struct ieee80211_hw *hw, set_key_cmd cmd,
7297 const u8 *local_addr, const u8 *addr,
7298 struct ieee80211_key_conf *key)
7299{
7300 struct iwl_priv *priv = hw->priv;
7301 int rc = 0;
7302 u8 sta_id;
7303
7304 IWL_DEBUG_MAC80211("enter\n");
7305
7306 if (!iwl_param_hwcrypto) {
7307 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7308 return -EOPNOTSUPP;
7309 }
7310
7311 if (is_zero_ether_addr(addr))
7312 /* only support pairwise keys */
7313 return -EOPNOTSUPP;
7314
7315 sta_id = iwl_hw_find_station(priv, addr);
7316 if (sta_id == IWL_INVALID_STATION) {
0795af57
JP		 7317 DECLARE_MAC_BUF(mac);
7318
7319 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7320 print_mac(mac, addr));
b481de9c
ZY		 7321 return -EINVAL;
7322 }
7323
7324 mutex_lock(&priv->mutex);
7325
7326 switch (cmd) {
7327 case SET_KEY:
7328 rc = iwl_update_sta_key_info(priv, key, sta_id);
7329 if (!rc) {
7330 iwl_set_rxon_hwcrypto(priv, 1);
7331 iwl_commit_rxon(priv);
7332 key->hw_key_idx = sta_id;
7333 IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7334 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7335 }
7336 break;
7337 case DISABLE_KEY:
7338 rc = iwl_clear_sta_key_info(priv, sta_id);
7339 if (!rc) {
7340 iwl_set_rxon_hwcrypto(priv, 0);
7341 iwl_commit_rxon(priv);
7342 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7343 }
7344 break;
7345 default:
7346 rc = -EINVAL;
7347 }
7348
7349 IWL_DEBUG_MAC80211("leave\n");
7350 mutex_unlock(&priv->mutex);
7351
7352 return rc;
7353}
7354
7355static int iwl_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7356 const struct ieee80211_tx_queue_params *params)
7357{
7358 struct iwl_priv *priv = hw->priv;
7359#ifdef CONFIG_IWLWIFI_QOS
7360 unsigned long flags;
7361 int q;
7362#endif /* CONFIG_IWL_QOS */
7363
7364 IWL_DEBUG_MAC80211("enter\n");
7365
7366 if (!iwl_is_ready_rf(priv)) {
7367 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7368 return -EIO;
7369 }
7370
7371 if (queue >= AC_NUM) {
7372 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7373 return 0;
7374 }
7375
7376#ifdef CONFIG_IWLWIFI_QOS
7377 if (!priv->qos_data.qos_enable) {
7378 priv->qos_data.qos_active = 0;
7379 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7380 return 0;
7381 }
7382 q = AC_NUM - 1 - queue;
7383
7384 spin_lock_irqsave(&priv->lock, flags);
7385
7386 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7387 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7388 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7389 priv->qos_data.def_qos_parm.ac[q].edca_txop =
7390 cpu_to_le16((params->burst_time * 100));
7391
7392 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7393 priv->qos_data.qos_active = 1;
7394
7395 spin_unlock_irqrestore(&priv->lock, flags);
7396
7397 mutex_lock(&priv->mutex);
7398 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7399 iwl_activate_qos(priv, 1);
7400 else if (priv->assoc_id && iwl_is_associated(priv))
7401 iwl_activate_qos(priv, 0);
7402
7403 mutex_unlock(&priv->mutex);
7404
7405#endif /*CONFIG_IWLWIFI_QOS */
7406
7407 IWL_DEBUG_MAC80211("leave\n");
7408 return 0;
7409}
7410
7411static int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
7412 struct ieee80211_tx_queue_stats *stats)
7413{
7414 struct iwl_priv *priv = hw->priv;
7415 int i, avail;
7416 struct iwl_tx_queue *txq;
7417 struct iwl_queue *q;
7418 unsigned long flags;
7419
7420 IWL_DEBUG_MAC80211("enter\n");
7421
7422 if (!iwl_is_ready_rf(priv)) {
7423 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7424 return -EIO;
7425 }
7426
7427 spin_lock_irqsave(&priv->lock, flags);
7428
7429 for (i = 0; i < AC_NUM; i++) {
7430 txq = &priv->txq[i];
7431 q = &txq->q;
7432 avail = iwl_queue_space(q);
7433
7434 stats->data[i].len = q->n_window - avail;
7435 stats->data[i].limit = q->n_window - q->high_mark;
7436 stats->data[i].count = q->n_window;
7437
7438 }
7439 spin_unlock_irqrestore(&priv->lock, flags);
7440
7441 IWL_DEBUG_MAC80211("leave\n");
7442
7443 return 0;
7444}
7445
7446static int iwl_mac_get_stats(struct ieee80211_hw *hw,
7447 struct ieee80211_low_level_stats *stats)
7448{
7449 IWL_DEBUG_MAC80211("enter\n");
7450 IWL_DEBUG_MAC80211("leave\n");
7451
7452 return 0;
7453}
7454
7455static u64 iwl_mac_get_tsf(struct ieee80211_hw *hw)
7456{
7457 IWL_DEBUG_MAC80211("enter\n");
7458 IWL_DEBUG_MAC80211("leave\n");
7459
7460 return 0;
7461}
7462
7463static void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
7464{
7465 struct iwl_priv *priv = hw->priv;
7466 unsigned long flags;
7467
7468 mutex_lock(&priv->mutex);
7469 IWL_DEBUG_MAC80211("enter\n");
7470
7471#ifdef CONFIG_IWLWIFI_QOS
7472 iwl_reset_qos(priv);
7473#endif
7474 cancel_delayed_work(&priv->post_associate);
7475
7476 spin_lock_irqsave(&priv->lock, flags);
7477 priv->assoc_id = 0;
7478 priv->assoc_capability = 0;
7479 priv->call_post_assoc_from_beacon = 0;
7480
7481 /* new association get rid of ibss beacon skb */
7482 if (priv->ibss_beacon)
7483 dev_kfree_skb(priv->ibss_beacon);
7484
7485 priv->ibss_beacon = NULL;
7486
7487 priv->beacon_int = priv->hw->conf.beacon_int;
7488 priv->timestamp1 = 0;
7489 priv->timestamp0 = 0;
7490 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
7491 priv->beacon_int = 0;
7492
7493 spin_unlock_irqrestore(&priv->lock, flags);
7494
7495 /* Per mac80211.h: This is only used in IBSS mode... */
7496 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7497 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7498 mutex_unlock(&priv->mutex);
7499 return;
7500 }
7501
7502 if (!iwl_is_ready_rf(priv)) {
7503 IWL_DEBUG_MAC80211("leave - not ready\n");
7504 mutex_unlock(&priv->mutex);
7505 return;
7506 }
7507
7508 priv->only_active_channel = 0;
7509
7510 iwl_set_rate(priv);
7511
7512 mutex_unlock(&priv->mutex);
7513
7514 IWL_DEBUG_MAC80211("leave\n");
7515
7516}
7517
7518static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
7519 struct ieee80211_tx_control *control)
7520{
7521 struct iwl_priv *priv = hw->priv;
7522 unsigned long flags;
7523
7524 mutex_lock(&priv->mutex);
7525 IWL_DEBUG_MAC80211("enter\n");
7526
7527 if (!iwl_is_ready_rf(priv)) {
7528 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7529 mutex_unlock(&priv->mutex);
7530 return -EIO;
7531 }
7532
7533 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7534 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7535 mutex_unlock(&priv->mutex);
7536 return -EIO;
7537 }
7538
7539 spin_lock_irqsave(&priv->lock, flags);
7540
7541 if (priv->ibss_beacon)
7542 dev_kfree_skb(priv->ibss_beacon);
7543
7544 priv->ibss_beacon = skb;
7545
7546 priv->assoc_id = 0;
7547
7548 IWL_DEBUG_MAC80211("leave\n");
7549 spin_unlock_irqrestore(&priv->lock, flags);
7550
7551#ifdef CONFIG_IWLWIFI_QOS
7552 iwl_reset_qos(priv);
7553#endif
7554
7555 queue_work(priv->workqueue, &priv->post_associate.work);
7556
7557 mutex_unlock(&priv->mutex);
7558
7559 return 0;
7560}
7561
7562/*****************************************************************************
7563 *
7564 * sysfs attributes
7565 *
7566 *****************************************************************************/
7567
7568#ifdef CONFIG_IWLWIFI_DEBUG
7569
7570/*
7571 * The following adds a new attribute to the sysfs representation
7572 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
7573 * used for controlling the debug level.
7574 *
7575 * See the level definitions in iwl for details.
7576 */
7577
7578static ssize_t show_debug_level(struct device_driver *d, char *buf)
7579{
7580 return sprintf(buf, "0x%08X\n", iwl_debug_level);
7581}
7582static ssize_t store_debug_level(struct device_driver *d,
7583 const char *buf, size_t count)
7584{
7585 char *p = (char *)buf;
7586 u32 val;
7587
7588 val = simple_strtoul(p, &p, 0);
7589 if (p == buf)
7590 printk(KERN_INFO DRV_NAME
7591 ": %s is not in hex or decimal form.\n", buf);
7592 else
7593 iwl_debug_level = val;
7594
7595 return strnlen(buf, count);
7596}
7597
7598static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
7599 show_debug_level, store_debug_level);
7600
7601#endif /* CONFIG_IWLWIFI_DEBUG */
7602
7603static ssize_t show_rf_kill(struct device *d,
7604 struct device_attribute *attr, char *buf)
7605{
7606 /*
7607 * 0 - RF kill not enabled
7608 * 1 - SW based RF kill active (sysfs)
7609 * 2 - HW based RF kill active
7610 * 3 - Both HW and SW based RF kill active
7611 */
7612 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7613 int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
7614 (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
7615
7616 return sprintf(buf, "%i\n", val);
7617}
7618
7619static ssize_t store_rf_kill(struct device *d,
7620 struct device_attribute *attr,
7621 const char *buf, size_t count)
7622{
7623 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7624
7625 mutex_lock(&priv->mutex);
7626 iwl_radio_kill_sw(priv, buf[0] == '1');
7627 mutex_unlock(&priv->mutex);
7628
7629 return count;
7630}
7631
7632static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
7633
7634static ssize_t show_temperature(struct device *d,
7635 struct device_attribute *attr, char *buf)
7636{
7637 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7638
7639 if (!iwl_is_alive(priv))
7640 return -EAGAIN;
7641
7642 return sprintf(buf, "%d\n", iwl_hw_get_temperature(priv));
7643}
7644
7645static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
7646
7647static ssize_t show_rs_window(struct device *d,
7648 struct device_attribute *attr,
7649 char *buf)
7650{
7651 struct iwl_priv *priv = d->driver_data;
7652 return iwl_fill_rs_info(priv->hw, buf, IWL_AP_ID);
7653}
7654static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
7655
7656static ssize_t show_tx_power(struct device *d,
7657 struct device_attribute *attr, char *buf)
7658{
7659 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7660 return sprintf(buf, "%d\n", priv->user_txpower_limit);
7661}
7662
7663static ssize_t store_tx_power(struct device *d,
7664 struct device_attribute *attr,
7665 const char *buf, size_t count)
7666{
7667 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7668 char *p = (char *)buf;
7669 u32 val;
7670
7671 val = simple_strtoul(p, &p, 10);
7672 if (p == buf)
7673 printk(KERN_INFO DRV_NAME
7674 ": %s is not in decimal form.\n", buf);
7675 else
7676 iwl_hw_reg_set_txpower(priv, val);
7677
7678 return count;
7679}
7680
7681static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
7682
7683static ssize_t show_flags(struct device *d,
7684 struct device_attribute *attr, char *buf)
7685{
7686 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7687
7688 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
7689}
7690
7691static ssize_t store_flags(struct device *d,
7692 struct device_attribute *attr,
7693 const char *buf, size_t count)
7694{
7695 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7696 u32 flags = simple_strtoul(buf, NULL, 0);
7697
7698 mutex_lock(&priv->mutex);
7699 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
7700 /* Cancel any currently running scans... */
7701 if (iwl_scan_cancel_timeout(priv, 100))
7702 IWL_WARNING("Could not cancel scan.\n");
7703 else {
7704 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
7705 flags);
7706 priv->staging_rxon.flags = cpu_to_le32(flags);
7707 iwl_commit_rxon(priv);
7708 }
7709 }
7710 mutex_unlock(&priv->mutex);
7711
7712 return count;
7713}
7714
7715static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
7716
7717static ssize_t show_filter_flags(struct device *d,
7718 struct device_attribute *attr, char *buf)
7719{
7720 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7721
7722 return sprintf(buf, "0x%04X\n",
7723 le32_to_cpu(priv->active_rxon.filter_flags));
7724}
7725
7726static ssize_t store_filter_flags(struct device *d,
7727 struct device_attribute *attr,
7728 const char *buf, size_t count)
7729{
7730 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7731 u32 filter_flags = simple_strtoul(buf, NULL, 0);
7732
7733 mutex_lock(&priv->mutex);
7734 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
7735 /* Cancel any currently running scans... */
7736 if (iwl_scan_cancel_timeout(priv, 100))
7737 IWL_WARNING("Could not cancel scan.\n");
7738 else {
7739 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7740 "0x%04X\n", filter_flags);
7741 priv->staging_rxon.filter_flags =
7742 cpu_to_le32(filter_flags);
7743 iwl_commit_rxon(priv);
7744 }
7745 }
7746 mutex_unlock(&priv->mutex);
7747
7748 return count;
7749}
7750
7751static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
7752 store_filter_flags);
7753
7754static ssize_t show_tune(struct device *d,
7755 struct device_attribute *attr, char *buf)
7756{
7757 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7758
7759 return sprintf(buf, "0x%04X\n",
7760 (priv->phymode << 8) |
7761 le16_to_cpu(priv->active_rxon.channel));
7762}
7763
7764static void iwl_set_flags_for_phymode(struct iwl_priv *priv, u8 phymode);
7765
7766static ssize_t store_tune(struct device *d,
7767 struct device_attribute *attr,
7768 const char *buf, size_t count)
7769{
7770 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7771 char *p = (char *)buf;
7772 u16 tune = simple_strtoul(p, &p, 0);
7773 u8 phymode = (tune >> 8) & 0xff;
7774 u16 channel = tune & 0xff;
7775
7776 IWL_DEBUG_INFO("Tune request to:%d channel:%d\n", phymode, channel);
7777
7778 mutex_lock(&priv->mutex);
7779 if ((le16_to_cpu(priv->staging_rxon.channel) != channel) ||
7780 (priv->phymode != phymode)) {
7781 const struct iwl_channel_info *ch_info;
7782
7783 ch_info = iwl_get_channel_info(priv, phymode, channel);
7784 if (!ch_info) {
7785 IWL_WARNING("Requested invalid phymode/channel "
7786 "combination: %d %d\n", phymode, channel);
7787 mutex_unlock(&priv->mutex);
7788 return -EINVAL;
7789 }
7790
7791 /* Cancel any currently running scans... */
7792 if (iwl_scan_cancel_timeout(priv, 100))
7793 IWL_WARNING("Could not cancel scan.\n");
7794 else {
7795 IWL_DEBUG_INFO("Committing phymode and "
7796 "rxon.channel = %d %d\n",
7797 phymode, channel);
7798
7799 iwl_set_rxon_channel(priv, phymode, channel);
7800 iwl_set_flags_for_phymode(priv, phymode);
7801
7802 iwl_set_rate(priv);
7803 iwl_commit_rxon(priv);
7804 }
7805 }
7806 mutex_unlock(&priv->mutex);
7807
7808 return count;
7809}
7810
7811static DEVICE_ATTR(tune, S_IWUSR | S_IRUGO, show_tune, store_tune);
7812
7813#ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
7814
7815static ssize_t show_measurement(struct device *d,
7816 struct device_attribute *attr, char *buf)
7817{
7818 struct iwl_priv *priv = dev_get_drvdata(d);
7819 struct iwl_spectrum_notification measure_report;
7820 u32 size = sizeof(measure_report), len = 0, ofs = 0;
7821 u8 *data = (u8 *) & measure_report;
7822 unsigned long flags;
7823
7824 spin_lock_irqsave(&priv->lock, flags);
7825 if (!(priv->measurement_status & MEASUREMENT_READY)) {
7826 spin_unlock_irqrestore(&priv->lock, flags);
7827 return 0;
7828 }
7829 memcpy(&measure_report, &priv->measure_report, size);
7830 priv->measurement_status = 0;
7831 spin_unlock_irqrestore(&priv->lock, flags);
7832
7833 while (size && (PAGE_SIZE - len)) {
7834 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7835 PAGE_SIZE - len, 1);
7836 len = strlen(buf);
7837 if (PAGE_SIZE - len)
7838 buf[len++] = '\n';
7839
7840 ofs += 16;
7841 size -= min(size, 16U);
7842 }
7843
7844 return len;
7845}
7846
7847static ssize_t store_measurement(struct device *d,
7848 struct device_attribute *attr,
7849 const char *buf, size_t count)
7850{
7851 struct iwl_priv *priv = dev_get_drvdata(d);
7852 struct ieee80211_measurement_params params = {
7853 .channel = le16_to_cpu(priv->active_rxon.channel),
7854 .start_time = cpu_to_le64(priv->last_tsf),
7855 .duration = cpu_to_le16(1),
7856 };
7857 u8 type = IWL_MEASURE_BASIC;
7858 u8 buffer[32];
7859 u8 channel;
7860
7861 if (count) {
7862 char *p = buffer;
7863 strncpy(buffer, buf, min(sizeof(buffer), count));
7864 channel = simple_strtoul(p, NULL, 0);
7865 if (channel)
7866 params.channel = channel;
7867
7868 p = buffer;
7869 while (*p && *p != ' ')
7870 p++;
7871 if (*p)
7872 type = simple_strtoul(p + 1, NULL, 0);
7873 }
7874
7875 IWL_DEBUG_INFO("Invoking measurement of type %d on "
7876 "channel %d (for '%s')\n", type, params.channel, buf);
7877 iwl_get_measurement(priv, &params, type);
7878
7879 return count;
7880}
7881
7882static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
7883 show_measurement, store_measurement);
7884#endif /* CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT */
7885
7886static ssize_t show_rate(struct device *d,
7887 struct device_attribute *attr, char *buf)
7888{
7889 struct iwl_priv *priv = dev_get_drvdata(d);
7890 unsigned long flags;
7891 int i;
7892
7893 spin_lock_irqsave(&priv->sta_lock, flags);
7894 if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
7895 i = priv->stations[IWL_AP_ID].current_rate.s.rate;
7896 else
7897 i = priv->stations[IWL_STA_ID].current_rate.s.rate;
7898 spin_unlock_irqrestore(&priv->sta_lock, flags);
7899
7900 i = iwl_rate_index_from_plcp(i);
7901 if (i == -1)
7902 return sprintf(buf, "0\n");
7903
7904 return sprintf(buf, "%d%s\n",
7905 (iwl_rates[i].ieee >> 1),
7906 (iwl_rates[i].ieee & 0x1) ? ".5" : "");
7907}
7908
7909static DEVICE_ATTR(rate, S_IRUSR, show_rate, NULL);
7910
7911static ssize_t store_retry_rate(struct device *d,
7912 struct device_attribute *attr,
7913 const char *buf, size_t count)
7914{
7915 struct iwl_priv *priv = dev_get_drvdata(d);
7916
7917 priv->retry_rate = simple_strtoul(buf, NULL, 0);
7918 if (priv->retry_rate <= 0)
7919 priv->retry_rate = 1;
7920
7921 return count;
7922}
7923
7924static ssize_t show_retry_rate(struct device *d,
7925 struct device_attribute *attr, char *buf)
7926{
7927 struct iwl_priv *priv = dev_get_drvdata(d);
7928 return sprintf(buf, "%d", priv->retry_rate);
7929}
7930
7931static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
7932 store_retry_rate);
7933
7934static ssize_t store_power_level(struct device *d,
7935 struct device_attribute *attr,
7936 const char *buf, size_t count)
7937{
7938 struct iwl_priv *priv = dev_get_drvdata(d);
7939 int rc;
7940 int mode;
7941
7942 mode = simple_strtoul(buf, NULL, 0);
7943 mutex_lock(&priv->mutex);
7944
7945 if (!iwl_is_ready(priv)) {
7946 rc = -EAGAIN;
7947 goto out;
7948 }
7949
7950 if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
7951 mode = IWL_POWER_AC;
7952 else
7953 mode |= IWL_POWER_ENABLED;
7954
7955 if (mode != priv->power_mode) {
7956 rc = iwl_send_power_mode(priv, IWL_POWER_LEVEL(mode));
7957 if (rc) {
7958 IWL_DEBUG_MAC80211("failed setting power mode.\n");
7959 goto out;
7960 }
7961 priv->power_mode = mode;
7962 }
7963
7964 rc = count;
7965
7966 out:
7967 mutex_unlock(&priv->mutex);
7968 return rc;
7969}
7970
7971#define MAX_WX_STRING 80
7972
7973/* Values are in microsecond */
7974static const s32 timeout_duration[] = {
7975 350000,
7976 250000,
7977 75000,
7978 37000,
7979 25000,
7980};
7981static const s32 period_duration[] = {
7982 400000,
7983 700000,
7984 1000000,
7985 1000000,
7986 1000000
7987};
7988
7989static ssize_t show_power_level(struct device *d,
7990 struct device_attribute *attr, char *buf)
7991{
7992 struct iwl_priv *priv = dev_get_drvdata(d);
7993 int level = IWL_POWER_LEVEL(priv->power_mode);
7994 char *p = buf;
7995
7996 p += sprintf(p, "%d ", level);
7997 switch (level) {
7998 case IWL_POWER_MODE_CAM:
7999 case IWL_POWER_AC:
8000 p += sprintf(p, "(AC)");
8001 break;
8002 case IWL_POWER_BATTERY:
8003 p += sprintf(p, "(BATTERY)");
8004 break;
8005 default:
8006 p += sprintf(p,
8007 "(Timeout %dms, Period %dms)",
8008 timeout_duration[level - 1] / 1000,
8009 period_duration[level - 1] / 1000);
8010 }
8011
8012 if (!(priv->power_mode & IWL_POWER_ENABLED))
8013 p += sprintf(p, " OFF\n");
8014 else
8015 p += sprintf(p, " \n");
8016
8017 return (p - buf + 1);
8018
8019}
8020
8021static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
8022 store_power_level);
8023
8024static ssize_t show_channels(struct device *d,
8025 struct device_attribute *attr, char *buf)
8026{
8027 struct iwl_priv *priv = dev_get_drvdata(d);
8028 int len = 0, i;
8029 struct ieee80211_channel *channels = NULL;
8030 const struct ieee80211_hw_mode *hw_mode = NULL;
8031 int count = 0;
8032
8033 if (!iwl_is_ready(priv))
8034 return -EAGAIN;
8035
8036 hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211G);
8037 if (!hw_mode)
8038 hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211B);
8039 if (hw_mode) {
8040 channels = hw_mode->channels;
8041 count = hw_mode->num_channels;
8042 }
8043
8044 len +=
8045 sprintf(&buf[len],
8046 "Displaying %d channels in 2.4GHz band "
8047 "(802.11bg):\n", count);
8048
8049 for (i = 0; i < count; i++)
8050 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8051 channels[i].chan,
8052 channels[i].power_level,
8053 channels[i].
8054 flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8055 " (IEEE 802.11h required)" : "",
8056 (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8057 || (channels[i].
8058 flag &
8059 IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8060 ", IBSS",
8061 channels[i].
8062 flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8063 "active/passive" : "passive only");
8064
8065 hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211A);
8066 if (hw_mode) {
8067 channels = hw_mode->channels;
8068 count = hw_mode->num_channels;
8069 } else {
8070 channels = NULL;
8071 count = 0;
8072 }
8073
8074 len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
8075 "(802.11a):\n", count);
8076
8077 for (i = 0; i < count; i++)
8078 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8079 channels[i].chan,
8080 channels[i].power_level,
8081 channels[i].
8082 flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8083 " (IEEE 802.11h required)" : "",
8084 (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8085 || (channels[i].
8086 flag &
8087 IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8088 ", IBSS",
8089 channels[i].
8090 flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8091 "active/passive" : "passive only");
8092
8093 return len;
8094}
8095
8096static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
8097
8098static ssize_t show_statistics(struct device *d,
8099 struct device_attribute *attr, char *buf)
8100{
8101 struct iwl_priv *priv = dev_get_drvdata(d);
8102 u32 size = sizeof(struct iwl_notif_statistics);
8103 u32 len = 0, ofs = 0;
8104 u8 *data = (u8 *) & priv->statistics;
8105 int rc = 0;
8106
8107 if (!iwl_is_alive(priv))
8108 return -EAGAIN;
8109
8110 mutex_lock(&priv->mutex);
8111 rc = iwl_send_statistics_request(priv);
8112 mutex_unlock(&priv->mutex);
8113
8114 if (rc) {
8115 len = sprintf(buf,
8116 "Error sending statistics request: 0x%08X\n", rc);
8117 return len;
8118 }
8119
8120 while (size && (PAGE_SIZE - len)) {
8121 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8122 PAGE_SIZE - len, 1);
8123 len = strlen(buf);
8124 if (PAGE_SIZE - len)
8125 buf[len++] = '\n';
8126
8127 ofs += 16;
8128 size -= min(size, 16U);
8129 }
8130
8131 return len;
8132}
8133
8134static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
8135
8136static ssize_t show_antenna(struct device *d,
8137 struct device_attribute *attr, char *buf)
8138{
8139 struct iwl_priv *priv = dev_get_drvdata(d);
8140
8141 if (!iwl_is_alive(priv))
8142 return -EAGAIN;
8143
8144 return sprintf(buf, "%d\n", priv->antenna);
8145}
8146
8147static ssize_t store_antenna(struct device *d,
8148 struct device_attribute *attr,
8149 const char *buf, size_t count)
8150{
8151 int ant;
8152 struct iwl_priv *priv = dev_get_drvdata(d);
8153
8154 if (count == 0)
8155 return 0;
8156
8157 if (sscanf(buf, "%1i", &ant) != 1) {
8158 IWL_DEBUG_INFO("not in hex or decimal form.\n");
8159 return count;
8160 }
8161
8162 if ((ant >= 0) && (ant <= 2)) {
8163 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
8164 priv->antenna = (enum iwl_antenna)ant;
8165 } else
8166 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
8167
8168
8169 return count;
8170}
8171
8172static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
8173
8174static ssize_t show_status(struct device *d,
8175 struct device_attribute *attr, char *buf)
8176{
8177 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8178 if (!iwl_is_alive(priv))
8179 return -EAGAIN;
8180 return sprintf(buf, "0x%08x\n", (int)priv->status);
8181}
8182
8183static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
8184
8185static ssize_t dump_error_log(struct device *d,
8186 struct device_attribute *attr,
8187 const char *buf, size_t count)
8188{
8189 char *p = (char *)buf;
8190
8191 if (p[0] == '1')
8192 iwl_dump_nic_error_log((struct iwl_priv *)d->driver_data);
8193
8194 return strnlen(buf, count);
8195}
8196
8197static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
8198
8199static ssize_t dump_event_log(struct device *d,
8200 struct device_attribute *attr,
8201 const char *buf, size_t count)
8202{
8203 char *p = (char *)buf;
8204
8205 if (p[0] == '1')
8206 iwl_dump_nic_event_log((struct iwl_priv *)d->driver_data);
8207
8208 return strnlen(buf, count);
8209}
8210
8211static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
8212
8213/*****************************************************************************
8214 *
8215 * driver setup and teardown
8216 *
8217 *****************************************************************************/
8218
8219static void iwl_setup_deferred_work(struct iwl_priv *priv)
8220{
8221 priv->workqueue = create_workqueue(DRV_NAME);
8222
8223 init_waitqueue_head(&priv->wait_command_queue);
8224
8225 INIT_WORK(&priv->up, iwl_bg_up);
8226 INIT_WORK(&priv->restart, iwl_bg_restart);
8227 INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
8228 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
8229 INIT_WORK(&priv->request_scan, iwl_bg_request_scan);
8230 INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
8231 INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
8232 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
8233 INIT_DELAYED_WORK(&priv->post_associate, iwl_bg_post_associate);
8234 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
8235 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
8236 INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
8237
8238 iwl_hw_setup_deferred_work(priv);
8239
8240 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
8241 iwl_irq_tasklet, (unsigned long)priv);
8242}
8243
8244static void iwl_cancel_deferred_work(struct iwl_priv *priv)
8245{
8246 iwl_hw_cancel_deferred_work(priv);
8247
8248 cancel_delayed_work(&priv->scan_check);
8249 cancel_delayed_work(&priv->alive_start);
8250 cancel_delayed_work(&priv->post_associate);
8251 cancel_work_sync(&priv->beacon_update);
8252}
8253
8254static struct attribute *iwl_sysfs_entries[] = {
8255 &dev_attr_antenna.attr,
8256 &dev_attr_channels.attr,
8257 &dev_attr_dump_errors.attr,
8258 &dev_attr_dump_events.attr,
8259 &dev_attr_flags.attr,
8260 &dev_attr_filter_flags.attr,
8261#ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
8262 &dev_attr_measurement.attr,
8263#endif
8264 &dev_attr_power_level.attr,
8265 &dev_attr_rate.attr,
8266 &dev_attr_retry_rate.attr,
8267 &dev_attr_rf_kill.attr,
8268 &dev_attr_rs_window.attr,
8269 &dev_attr_statistics.attr,
8270 &dev_attr_status.attr,
8271 &dev_attr_temperature.attr,
8272 &dev_attr_tune.attr,
8273 &dev_attr_tx_power.attr,
8274
8275 NULL
8276};
8277
8278static struct attribute_group iwl_attribute_group = {
8279 .name = NULL, /* put in device directory */
8280 .attrs = iwl_sysfs_entries,
8281};
8282
8283static struct ieee80211_ops iwl_hw_ops = {
8284 .tx = iwl_mac_tx,
4150c572 8285 .start = iwl_mac_start,
b481de9c
ZY		 8286 .stop = iwl_mac_stop,
8287 .add_interface = iwl_mac_add_interface,
8288 .remove_interface = iwl_mac_remove_interface,
8289 .config = iwl_mac_config,
8290 .config_interface = iwl_mac_config_interface,
4150c572 8291 .configure_filter = iwl_configure_filter,
b481de9c
ZY		 8292 .set_key = iwl_mac_set_key,
8293 .get_stats = iwl_mac_get_stats,
8294 .get_tx_stats = iwl_mac_get_tx_stats,
8295 .conf_tx = iwl_mac_conf_tx,
8296 .get_tsf = iwl_mac_get_tsf,
8297 .reset_tsf = iwl_mac_reset_tsf,
8298 .beacon_update = iwl_mac_beacon_update,
8299 .hw_scan = iwl_mac_hw_scan
8300};
8301
8302static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8303{
8304 int err = 0;
8305 u32 pci_id;
8306 struct iwl_priv *priv;
8307 struct ieee80211_hw *hw;
8308 int i;
8309
8310 if (iwl_param_disable_hw_scan) {
8311 IWL_DEBUG_INFO("Disabling hw_scan\n");
8312 iwl_hw_ops.hw_scan = NULL;
8313 }
8314
8315 if ((iwl_param_queues_num > IWL_MAX_NUM_QUEUES) ||
8316 (iwl_param_queues_num < IWL_MIN_NUM_QUEUES)) {
8317 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
8318 IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
8319 err = -EINVAL;
8320 goto out;
8321 }
8322
8323 /* mac80211 allocates memory for this device instance, including
8324 * space for this driver's private structure */
8325 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwl_hw_ops);
8326 if (hw == NULL) {
8327 IWL_ERROR("Can not allocate network device\n");
8328 err = -ENOMEM;
8329 goto out;
8330 }
8331 SET_IEEE80211_DEV(hw, &pdev->dev);
8332
8333 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
8334 priv = hw->priv;
8335 priv->hw = hw;
8336
8337 priv->pci_dev = pdev;
8338 priv->antenna = (enum iwl_antenna)iwl_param_antenna;
8339#ifdef CONFIG_IWLWIFI_DEBUG
8340 iwl_debug_level = iwl_param_debug;
8341 atomic_set(&priv->restrict_refcnt, 0);
8342#endif
8343 priv->retry_rate = 1;
8344
8345 priv->ibss_beacon = NULL;
8346
8347 /* Tell mac80211 and its clients (e.g. Wireless Extensions)
8348 * the range of signal quality values that we'll provide.
8349 * Negative values for level/noise indicate that we'll provide dBm.
8350 * For WE, at least, non-0 values here *enable* display of values
8351 * in app (iwconfig). */
8352 hw->max_rssi = -20; /* signal level, negative indicates dBm */
8353 hw->max_noise = -20; /* noise level, negative indicates dBm */
8354 hw->max_signal = 100; /* link quality indication (%) */
8355
8356 /* Tell mac80211 our Tx characteristics */
8357 hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
8358
8359 hw->queues = 4;
8360
8361 spin_lock_init(&priv->lock);
8362 spin_lock_init(&priv->power_data.lock);
8363 spin_lock_init(&priv->sta_lock);
8364 spin_lock_init(&priv->hcmd_lock);
8365
8366 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
8367 INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
8368
8369 INIT_LIST_HEAD(&priv->free_frames);
8370
8371 mutex_init(&priv->mutex);
8372 if (pci_enable_device(pdev)) {
8373 err = -ENODEV;
8374 goto out_ieee80211_free_hw;
8375 }
8376
8377 pci_set_master(pdev);
8378
8379 iwl_clear_stations_table(priv);
8380
8381 priv->data_retry_limit = -1;
8382 priv->ieee_channels = NULL;
8383 priv->ieee_rates = NULL;
8384 priv->phymode = -1;
8385
8386 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
8387 if (!err)
8388 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
8389 if (err) {
8390 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
8391 goto out_pci_disable_device;
8392 }
8393
8394 pci_set_drvdata(pdev, priv);
8395 err = pci_request_regions(pdev, DRV_NAME);
8396 if (err)
8397 goto out_pci_disable_device;
8398 /* We disable the RETRY_TIMEOUT register (0x41) to keep
8399 * PCI Tx retries from interfering with C3 CPU state */
8400 pci_write_config_byte(pdev, 0x41, 0x00);
8401 priv->hw_base = pci_iomap(pdev, 0, 0);
8402 if (!priv->hw_base) {
8403 err = -ENODEV;
8404 goto out_pci_release_regions;
8405 }
8406
8407 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
8408 (unsigned long long) pci_resource_len(pdev, 0));
8409 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
8410
8411 /* Initialize module parameter values here */
8412
8413 if (iwl_param_disable) {
8414 set_bit(STATUS_RF_KILL_SW, &priv->status);
8415 IWL_DEBUG_INFO("Radio disabled.\n");
8416 }
8417
8418 priv->iw_mode = IEEE80211_IF_TYPE_STA;
8419
8420 pci_id =
8421 (priv->pci_dev->device << 16) | priv->pci_dev->subsystem_device;
8422
8423 switch (pci_id) {
8424 case 0x42221005: /* 0x4222 0x8086 0x1005 is BG SKU */
8425 case 0x42221034: /* 0x4222 0x8086 0x1034 is BG SKU */
8426 case 0x42271014: /* 0x4227 0x8086 0x1014 is BG SKU */
8427 case 0x42221044: /* 0x4222 0x8086 0x1044 is BG SKU */
8428 priv->is_abg = 0;
8429 break;
8430
8431 /*
8432 * Rest are assumed ABG SKU -- if this is not the
8433 * case then the card will get the wrong 'Detected'
8434 * line in the kernel log however the code that
8435 * initializes the GEO table will detect no A-band
8436 * channels and remove the is_abg mask.
8437 */
8438 default:
8439 priv->is_abg = 1;
8440 break;
8441 }
8442
8443 printk(KERN_INFO DRV_NAME
8444 ": Detected Intel PRO/Wireless 3945%sBG Network Connection\n",
8445 priv->is_abg ? "A" : "");
8446
8447 /* Device-specific setup */
8448 if (iwl_hw_set_hw_setting(priv)) {
8449 IWL_ERROR("failed to set hw settings\n");
8450 mutex_unlock(&priv->mutex);
8451 goto out_iounmap;
8452 }
8453
8454#ifdef CONFIG_IWLWIFI_QOS
8455 if (iwl_param_qos_enable)
8456 priv->qos_data.qos_enable = 1;
8457
8458 iwl_reset_qos(priv);
8459
8460 priv->qos_data.qos_active = 0;
8461 priv->qos_data.qos_cap.val = 0;
8462#endif /* CONFIG_IWLWIFI_QOS */
8463
8464 iwl_set_rxon_channel(priv, MODE_IEEE80211G, 6);
8465 iwl_setup_deferred_work(priv);
8466 iwl_setup_rx_handlers(priv);
8467
8468 priv->rates_mask = IWL_RATES_MASK;
8469 /* If power management is turned on, default to AC mode */
8470 priv->power_mode = IWL_POWER_AC;
8471 priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
8472
8473 pci_enable_msi(pdev);
8474
8475 err = request_irq(pdev->irq, iwl_isr, IRQF_SHARED, DRV_NAME, priv);
8476 if (err) {
8477 IWL_ERROR("Error allocating IRQ %d\n", pdev->irq);
8478 goto out_disable_msi;
8479 }
8480
8481 mutex_lock(&priv->mutex);
8482
8483 err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
8484 if (err) {
8485 IWL_ERROR("failed to create sysfs device attributes\n");
8486 mutex_unlock(&priv->mutex);
8487 goto out_release_irq;
8488 }
8489
8490 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
8491 * ucode filename and max sizes are card-specific. */
8492 err = iwl_read_ucode(priv);
8493 if (err) {
8494 IWL_ERROR("Could not read microcode: %d\n", err);
8495 mutex_unlock(&priv->mutex);
8496 goto out_pci_alloc;
8497 }
8498
8499 mutex_unlock(&priv->mutex);
8500
8501 IWL_DEBUG_INFO("Queing UP work.\n");
8502
8503 queue_work(priv->workqueue, &priv->up);
8504
8505 return 0;
8506
8507 out_pci_alloc:
8508 iwl_dealloc_ucode_pci(priv);
8509
8510 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
8511
8512 out_release_irq:
8513 free_irq(pdev->irq, priv);
8514
8515 out_disable_msi:
8516 pci_disable_msi(pdev);
8517 destroy_workqueue(priv->workqueue);
8518 priv->workqueue = NULL;
8519 iwl_unset_hw_setting(priv);
8520
8521 out_iounmap:
8522 pci_iounmap(pdev, priv->hw_base);
8523 out_pci_release_regions:
8524 pci_release_regions(pdev);
8525 out_pci_disable_device:
8526 pci_disable_device(pdev);
8527 pci_set_drvdata(pdev, NULL);
8528 out_ieee80211_free_hw:
8529 ieee80211_free_hw(priv->hw);
8530 out:
8531 return err;
8532}
8533
8534static void iwl_pci_remove(struct pci_dev *pdev)
8535{
8536 struct iwl_priv *priv = pci_get_drvdata(pdev);
8537 struct list_head *p, *q;
8538 int i;
8539
8540 if (!priv)
8541 return;
8542
8543 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
8544
8545 mutex_lock(&priv->mutex);
8546 set_bit(STATUS_EXIT_PENDING, &priv->status);
8547 __iwl_down(priv);
8548 mutex_unlock(&priv->mutex);
8549
8550 /* Free MAC hash list for ADHOC */
8551 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
8552 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
8553 list_del(p);
8554 kfree(list_entry(p, struct iwl_ibss_seq, list));
8555 }
8556 }
8557
8558 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
8559
8560 iwl_dealloc_ucode_pci(priv);
8561
8562 if (priv->rxq.bd)
8563 iwl_rx_queue_free(priv, &priv->rxq);
8564 iwl_hw_txq_ctx_free(priv);
8565
8566 iwl_unset_hw_setting(priv);
8567 iwl_clear_stations_table(priv);
8568
8569 if (priv->mac80211_registered) {
8570 ieee80211_unregister_hw(priv->hw);
8571 iwl_rate_control_unregister(priv->hw);
8572 }
8573
8574 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
8575 * priv->workqueue... so we can't take down the workqueue
8576 * until now... */
8577 destroy_workqueue(priv->workqueue);
8578 priv->workqueue = NULL;
8579
8580 free_irq(pdev->irq, priv);
8581 pci_disable_msi(pdev);
8582 pci_iounmap(pdev, priv->hw_base);
8583 pci_release_regions(pdev);
8584 pci_disable_device(pdev);
8585 pci_set_drvdata(pdev, NULL);
8586
8587 kfree(priv->channel_info);
8588
8589 kfree(priv->ieee_channels);
8590 kfree(priv->ieee_rates);
8591
8592 if (priv->ibss_beacon)
8593 dev_kfree_skb(priv->ibss_beacon);
8594
8595 ieee80211_free_hw(priv->hw);
8596}
8597
8598#ifdef CONFIG_PM
8599
8600static int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
8601{
8602 struct iwl_priv *priv = pci_get_drvdata(pdev);
8603
8604 mutex_lock(&priv->mutex);
8605
8606 set_bit(STATUS_IN_SUSPEND, &priv->status);
8607
8608 /* Take down the device; powers it off, etc. */
8609 __iwl_down(priv);
8610
8611 if (priv->mac80211_registered)
8612 ieee80211_stop_queues(priv->hw);
8613
8614 pci_save_state(pdev);
8615 pci_disable_device(pdev);
8616 pci_set_power_state(pdev, PCI_D3hot);
8617
8618 mutex_unlock(&priv->mutex);
8619
8620 return 0;
8621}
8622
8623static void iwl_resume(struct iwl_priv *priv)
8624{
8625 unsigned long flags;
8626
8627 /* The following it a temporary work around due to the
8628 * suspend / resume not fully initializing the NIC correctly.
8629 * Without all of the following, resume will not attempt to take
8630 * down the NIC (it shouldn't really need to) and will just try
8631 * and bring the NIC back up. However that fails during the
8632 * ucode verification process. This then causes iwl_down to be
8633 * called *after* iwl_hw_nic_init() has succeeded -- which
8634 * then lets the next init sequence succeed. So, we've
8635 * replicated all of that NIC init code here... */
8636
8637 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
8638
8639 iwl_hw_nic_init(priv);
8640
8641 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
8642 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
8643 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
8644 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
8645 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
8646 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
8647
8648 /* tell the device to stop sending interrupts */
8649 iwl_disable_interrupts(priv);
8650
8651 spin_lock_irqsave(&priv->lock, flags);
8652 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
8653
8654 if (!iwl_grab_restricted_access(priv)) {
8655 iwl_write_restricted_reg(priv, APMG_CLK_DIS_REG,
8656 APMG_CLK_VAL_DMA_CLK_RQT);
8657 iwl_release_restricted_access(priv);
8658 }
8659 spin_unlock_irqrestore(&priv->lock, flags);
8660
8661 udelay(5);
8662
8663 iwl_hw_nic_reset(priv);
8664
8665 /* Bring the device back up */
8666 clear_bit(STATUS_IN_SUSPEND, &priv->status);
8667 queue_work(priv->workqueue, &priv->up);
8668}
8669
8670static int iwl_pci_resume(struct pci_dev *pdev)
8671{
8672 struct iwl_priv *priv = pci_get_drvdata(pdev);
8673 int err;
8674
8675 printk(KERN_INFO "Coming out of suspend...\n");
8676
8677 mutex_lock(&priv->mutex);
8678
8679 pci_set_power_state(pdev, PCI_D0);
8680 err = pci_enable_device(pdev);
8681 pci_restore_state(pdev);
8682
8683 /*
8684 * Suspend/Resume resets the PCI configuration space, so we have to
8685 * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
8686 * from interfering with C3 CPU state. pci_restore_state won't help
8687 * here since it only restores the first 64 bytes pci config header.
8688 */
8689 pci_write_config_byte(pdev, 0x41, 0x00);
8690
8691 iwl_resume(priv);
8692 mutex_unlock(&priv->mutex);
8693
8694 return 0;
8695}
8696
8697#endif /* CONFIG_PM */
8698
8699/*****************************************************************************
8700 *
8701 * driver and module entry point
8702 *
8703 *****************************************************************************/
8704
8705static struct pci_driver iwl_driver = {
8706 .name = DRV_NAME,
8707 .id_table = iwl_hw_card_ids,
8708 .probe = iwl_pci_probe,
8709 .remove = __devexit_p(iwl_pci_remove),
8710#ifdef CONFIG_PM
8711 .suspend = iwl_pci_suspend,
8712 .resume = iwl_pci_resume,
8713#endif
8714};
8715
8716static int __init iwl_init(void)
8717{
8718
8719 int ret;
8720 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
8721 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
8722 ret = pci_register_driver(&iwl_driver);
8723 if (ret) {
8724 IWL_ERROR("Unable to initialize PCI module\n");
8725 return ret;
8726 }
8727#ifdef CONFIG_IWLWIFI_DEBUG
8728 ret = driver_create_file(&iwl_driver.driver, &driver_attr_debug_level);
8729 if (ret) {
8730 IWL_ERROR("Unable to create driver sysfs file\n");
8731 pci_unregister_driver(&iwl_driver);
8732 return ret;
8733 }
8734#endif
8735
8736 return ret;
8737}
8738
8739static void __exit iwl_exit(void)
8740{
8741#ifdef CONFIG_IWLWIFI_DEBUG
8742 driver_remove_file(&iwl_driver.driver, &driver_attr_debug_level);
8743#endif
8744 pci_unregister_driver(&iwl_driver);
8745}
8746
8747module_param_named(antenna, iwl_param_antenna, int, 0444);
8748MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
8749module_param_named(disable, iwl_param_disable, int, 0444);
8750MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
8751module_param_named(hwcrypto, iwl_param_hwcrypto, int, 0444);
8752MODULE_PARM_DESC(hwcrypto,
8753 "using hardware crypto engine (default 0 [software])\n");
8754module_param_named(debug, iwl_param_debug, int, 0444);
8755MODULE_PARM_DESC(debug, "debug output mask");
8756module_param_named(disable_hw_scan, iwl_param_disable_hw_scan, int, 0444);
8757MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
8758
8759module_param_named(queues_num, iwl_param_queues_num, int, 0444);
8760MODULE_PARM_DESC(queues_num, "number of hw queues.");
8761
8762/* QoS */
8763module_param_named(qos_enable, iwl_param_qos_enable, int, 0444);
8764MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
8765
8766module_exit(iwl_exit);
8767module_init(iwl_init);
Linux kernel - Deliverables
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