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iwlwifi: Probe Flow - Extracting hw and priv init
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl4965-base.c
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2008 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 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/version.h>
33 #include <linux/init.h>
34 #include <linux/pci.h>
35 #include <linux/dma-mapping.h>
36 #include <linux/delay.h>
37 #include <linux/skbuff.h>
38 #include <linux/netdevice.h>
39 #include <linux/wireless.h>
40 #include <linux/firmware.h>
41 #include <linux/etherdevice.h>
42 #include <linux/if_arp.h>
43
44 #include <net/mac80211.h>
45
46 #include <asm/div64.h>
47
48 #include "iwl-eeprom.h"
49 #include "iwl-core.h"
50 #include "iwl-4965.h"
51 #include "iwl-helpers.h"
52
53 static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv,
54 struct iwl4965_tx_queue *txq);
55
56 /******************************************************************************
57 *
58 * module boiler plate
59 *
60 ******************************************************************************/
61
62 /* module parameters */
63 struct iwl_mod_params iwl4965_mod_params = {
64 .num_of_queues = IWL_MAX_NUM_QUEUES,
65 .enable_qos = 1,
66 .amsdu_size_8K = 1,
67 /* the rest are 0 by default */
68 };
69
70 /*
71 * module name, copyright, version, etc.
72 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
73 */
74
75 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
76
77 #ifdef CONFIG_IWLWIFI_DEBUG
78 #define VD "d"
79 #else
80 #define VD
81 #endif
82
83 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
84 #define VS "s"
85 #else
86 #define VS
87 #endif
88
89 #define DRV_VERSION IWLWIFI_VERSION VD VS
90
91
92 MODULE_DESCRIPTION(DRV_DESCRIPTION);
93 MODULE_VERSION(DRV_VERSION);
94 MODULE_AUTHOR(DRV_COPYRIGHT);
95 MODULE_LICENSE("GPL");
96
97 __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
98 {
99 u16 fc = le16_to_cpu(hdr->frame_control);
100 int hdr_len = ieee80211_get_hdrlen(fc);
101
102 if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
103 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
104 return NULL;
105 }
106
107 static const struct ieee80211_supported_band *iwl4965_get_hw_mode(
108 struct iwl_priv *priv, enum ieee80211_band band)
109 {
110 return priv->hw->wiphy->bands[band];
111 }
112
113 static int iwl4965_is_empty_essid(const char *essid, int essid_len)
114 {
115 /* Single white space is for Linksys APs */
116 if (essid_len == 1 && essid[0] == ' ')
117 return 1;
118
119 /* Otherwise, if the entire essid is 0, we assume it is hidden */
120 while (essid_len) {
121 essid_len--;
122 if (essid[essid_len] != '\0')
123 return 0;
124 }
125
126 return 1;
127 }
128
129 static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
130 {
131 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
132 const char *s = essid;
133 char *d = escaped;
134
135 if (iwl4965_is_empty_essid(essid, essid_len)) {
136 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
137 return escaped;
138 }
139
140 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
141 while (essid_len--) {
142 if (*s == '\0') {
143 *d++ = '\\';
144 *d++ = '0';
145 s++;
146 } else
147 *d++ = *s++;
148 }
149 *d = '\0';
150 return escaped;
151 }
152
153 /*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
154 * DMA services
155 *
156 * Theory of operation
157 *
158 * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
159 * of buffer descriptors, each of which points to one or more data buffers for
160 * the device to read from or fill. Driver and device exchange status of each
161 * queue via "read" and "write" pointers. Driver keeps minimum of 2 empty
162 * entries in each circular buffer, to protect against confusing empty and full
163 * queue states.
164 *
165 * The device reads or writes the data in the queues via the device's several
166 * DMA/FIFO channels. Each queue is mapped to a single DMA channel.
167 *
168 * For Tx queue, there are low mark and high mark limits. If, after queuing
169 * the packet for Tx, free space become < low mark, Tx queue stopped. When
170 * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
171 * Tx queue resumed.
172 *
173 * The 4965 operates with up to 17 queues: One receive queue, one transmit
174 * queue (#4) for sending commands to the device firmware, and 15 other
175 * Tx queues that may be mapped to prioritized Tx DMA/FIFO channels.
176 *
177 * See more detailed info in iwl-4965-hw.h.
178 ***************************************************/
179
180 int iwl4965_queue_space(const struct iwl4965_queue *q)
181 {
182 int s = q->read_ptr - q->write_ptr;
183
184 if (q->read_ptr > q->write_ptr)
185 s -= q->n_bd;
186
187 if (s <= 0)
188 s += q->n_window;
189 /* keep some reserve to not confuse empty and full situations */
190 s -= 2;
191 if (s < 0)
192 s = 0;
193 return s;
194 }
195
196
197 static inline int x2_queue_used(const struct iwl4965_queue *q, int i)
198 {
199 return q->write_ptr > q->read_ptr ?
200 (i >= q->read_ptr && i < q->write_ptr) :
201 !(i < q->read_ptr && i >= q->write_ptr);
202 }
203
204 static inline u8 get_cmd_index(struct iwl4965_queue *q, u32 index, int is_huge)
205 {
206 /* This is for scan command, the big buffer at end of command array */
207 if (is_huge)
208 return q->n_window; /* must be power of 2 */
209
210 /* Otherwise, use normal size buffers */
211 return index & (q->n_window - 1);
212 }
213
214 /**
215 * iwl4965_queue_init - Initialize queue's high/low-water and read/write indexes
216 */
217 static int iwl4965_queue_init(struct iwl_priv *priv, struct iwl4965_queue *q,
218 int count, int slots_num, u32 id)
219 {
220 q->n_bd = count;
221 q->n_window = slots_num;
222 q->id = id;
223
224 /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
225 * and iwl_queue_dec_wrap are broken. */
226 BUG_ON(!is_power_of_2(count));
227
228 /* slots_num must be power-of-two size, otherwise
229 * get_cmd_index is broken. */
230 BUG_ON(!is_power_of_2(slots_num));
231
232 q->low_mark = q->n_window / 4;
233 if (q->low_mark < 4)
234 q->low_mark = 4;
235
236 q->high_mark = q->n_window / 8;
237 if (q->high_mark < 2)
238 q->high_mark = 2;
239
240 q->write_ptr = q->read_ptr = 0;
241
242 return 0;
243 }
244
245 /**
246 * iwl4965_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
247 */
248 static int iwl4965_tx_queue_alloc(struct iwl_priv *priv,
249 struct iwl4965_tx_queue *txq, u32 id)
250 {
251 struct pci_dev *dev = priv->pci_dev;
252
253 /* Driver private data, only for Tx (not command) queues,
254 * not shared with device. */
255 if (id != IWL_CMD_QUEUE_NUM) {
256 txq->txb = kmalloc(sizeof(txq->txb[0]) *
257 TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
258 if (!txq->txb) {
259 IWL_ERROR("kmalloc for auxiliary BD "
260 "structures failed\n");
261 goto error;
262 }
263 } else
264 txq->txb = NULL;
265
266 /* Circular buffer of transmit frame descriptors (TFDs),
267 * shared with device */
268 txq->bd = pci_alloc_consistent(dev,
269 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
270 &txq->q.dma_addr);
271
272 if (!txq->bd) {
273 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
274 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
275 goto error;
276 }
277 txq->q.id = id;
278
279 return 0;
280
281 error:
282 if (txq->txb) {
283 kfree(txq->txb);
284 txq->txb = NULL;
285 }
286
287 return -ENOMEM;
288 }
289
290 /**
291 * iwl4965_tx_queue_init - Allocate and initialize one tx/cmd queue
292 */
293 int iwl4965_tx_queue_init(struct iwl_priv *priv,
294 struct iwl4965_tx_queue *txq, int slots_num, u32 txq_id)
295 {
296 struct pci_dev *dev = priv->pci_dev;
297 int len;
298 int rc = 0;
299
300 /*
301 * Alloc buffer array for commands (Tx or other types of commands).
302 * For the command queue (#4), allocate command space + one big
303 * command for scan, since scan command is very huge; the system will
304 * not have two scans at the same time, so only one is needed.
305 * For normal Tx queues (all other queues), no super-size command
306 * space is needed.
307 */
308 len = sizeof(struct iwl4965_cmd) * slots_num;
309 if (txq_id == IWL_CMD_QUEUE_NUM)
310 len += IWL_MAX_SCAN_SIZE;
311 txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
312 if (!txq->cmd)
313 return -ENOMEM;
314
315 /* Alloc driver data array and TFD circular buffer */
316 rc = iwl4965_tx_queue_alloc(priv, txq, txq_id);
317 if (rc) {
318 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
319
320 return -ENOMEM;
321 }
322 txq->need_update = 0;
323
324 /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
325 * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
326 BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
327
328 /* Initialize queue's high/low-water marks, and head/tail indexes */
329 iwl4965_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
330
331 /* Tell device where to find queue */
332 iwl4965_hw_tx_queue_init(priv, txq);
333
334 return 0;
335 }
336
337 /**
338 * iwl4965_tx_queue_free - Deallocate DMA queue.
339 * @txq: Transmit queue to deallocate.
340 *
341 * Empty queue by removing and destroying all BD's.
342 * Free all buffers.
343 * 0-fill, but do not free "txq" descriptor structure.
344 */
345 void iwl4965_tx_queue_free(struct iwl_priv *priv, struct iwl4965_tx_queue *txq)
346 {
347 struct iwl4965_queue *q = &txq->q;
348 struct pci_dev *dev = priv->pci_dev;
349 int len;
350
351 if (q->n_bd == 0)
352 return;
353
354 /* first, empty all BD's */
355 for (; q->write_ptr != q->read_ptr;
356 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd))
357 iwl4965_hw_txq_free_tfd(priv, txq);
358
359 len = sizeof(struct iwl4965_cmd) * q->n_window;
360 if (q->id == IWL_CMD_QUEUE_NUM)
361 len += IWL_MAX_SCAN_SIZE;
362
363 /* De-alloc array of command/tx buffers */
364 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
365
366 /* De-alloc circular buffer of TFDs */
367 if (txq->q.n_bd)
368 pci_free_consistent(dev, sizeof(struct iwl4965_tfd_frame) *
369 txq->q.n_bd, txq->bd, txq->q.dma_addr);
370
371 /* De-alloc array of per-TFD driver data */
372 if (txq->txb) {
373 kfree(txq->txb);
374 txq->txb = NULL;
375 }
376
377 /* 0-fill queue descriptor structure */
378 memset(txq, 0, sizeof(*txq));
379 }
380
381 const u8 iwl4965_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
382
383 /*************** STATION TABLE MANAGEMENT ****
384 * mac80211 should be examined to determine if sta_info is duplicating
385 * the functionality provided here
386 */
387
388 /**************************************************************/
389
390 #if 0 /* temporary disable till we add real remove station */
391 /**
392 * iwl4965_remove_station - Remove driver's knowledge of station.
393 *
394 * NOTE: This does not remove station from device's station table.
395 */
396 static u8 iwl4965_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
397 {
398 int index = IWL_INVALID_STATION;
399 int i;
400 unsigned long flags;
401
402 spin_lock_irqsave(&priv->sta_lock, flags);
403
404 if (is_ap)
405 index = IWL_AP_ID;
406 else if (is_broadcast_ether_addr(addr))
407 index = priv->hw_setting.bcast_sta_id;
408 else
409 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
410 if (priv->stations[i].used &&
411 !compare_ether_addr(priv->stations[i].sta.sta.addr,
412 addr)) {
413 index = i;
414 break;
415 }
416
417 if (unlikely(index == IWL_INVALID_STATION))
418 goto out;
419
420 if (priv->stations[index].used) {
421 priv->stations[index].used = 0;
422 priv->num_stations--;
423 }
424
425 BUG_ON(priv->num_stations < 0);
426
427 out:
428 spin_unlock_irqrestore(&priv->sta_lock, flags);
429 return 0;
430 }
431 #endif
432
433 /**
434 * iwl4965_add_station_flags - Add station to tables in driver and device
435 */
436 u8 iwl4965_add_station_flags(struct iwl_priv *priv, const u8 *addr,
437 int is_ap, u8 flags, void *ht_data)
438 {
439 int i;
440 int index = IWL_INVALID_STATION;
441 struct iwl4965_station_entry *station;
442 unsigned long flags_spin;
443 DECLARE_MAC_BUF(mac);
444
445 spin_lock_irqsave(&priv->sta_lock, flags_spin);
446 if (is_ap)
447 index = IWL_AP_ID;
448 else if (is_broadcast_ether_addr(addr))
449 index = priv->hw_setting.bcast_sta_id;
450 else
451 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
452 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
453 addr)) {
454 index = i;
455 break;
456 }
457
458 if (!priv->stations[i].used &&
459 index == IWL_INVALID_STATION)
460 index = i;
461 }
462
463
464 /* These two conditions have the same outcome, but keep them separate
465 since they have different meanings */
466 if (unlikely(index == IWL_INVALID_STATION)) {
467 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
468 return index;
469 }
470
471 if (priv->stations[index].used &&
472 !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
473 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
474 return index;
475 }
476
477
478 IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
479 station = &priv->stations[index];
480 station->used = 1;
481 priv->num_stations++;
482
483 /* Set up the REPLY_ADD_STA command to send to device */
484 memset(&station->sta, 0, sizeof(struct iwl4965_addsta_cmd));
485 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
486 station->sta.mode = 0;
487 station->sta.sta.sta_id = index;
488 station->sta.station_flags = 0;
489
490 #ifdef CONFIG_IWL4965_HT
491 /* BCAST station and IBSS stations do not work in HT mode */
492 if (index != priv->hw_setting.bcast_sta_id &&
493 priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
494 iwl4965_set_ht_add_station(priv, index,
495 (struct ieee80211_ht_info *) ht_data);
496 #endif /*CONFIG_IWL4965_HT*/
497
498 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
499
500 /* Add station to device's station table */
501 iwl4965_send_add_station(priv, &station->sta, flags);
502 return index;
503
504 }
505
506 /*************** DRIVER STATUS FUNCTIONS *****/
507
508 static inline int iwl4965_is_ready(struct iwl_priv *priv)
509 {
510 /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
511 * set but EXIT_PENDING is not */
512 return test_bit(STATUS_READY, &priv->status) &&
513 test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
514 !test_bit(STATUS_EXIT_PENDING, &priv->status);
515 }
516
517 static inline int iwl4965_is_alive(struct iwl_priv *priv)
518 {
519 return test_bit(STATUS_ALIVE, &priv->status);
520 }
521
522 static inline int iwl4965_is_init(struct iwl_priv *priv)
523 {
524 return test_bit(STATUS_INIT, &priv->status);
525 }
526
527 static inline int iwl4965_is_rfkill(struct iwl_priv *priv)
528 {
529 return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
530 test_bit(STATUS_RF_KILL_SW, &priv->status);
531 }
532
533 static inline int iwl4965_is_ready_rf(struct iwl_priv *priv)
534 {
535
536 if (iwl4965_is_rfkill(priv))
537 return 0;
538
539 return iwl4965_is_ready(priv);
540 }
541
542 /*************** HOST COMMAND QUEUE FUNCTIONS *****/
543
544 #define IWL_CMD(x) case x : return #x
545
546 static const char *get_cmd_string(u8 cmd)
547 {
548 switch (cmd) {
549 IWL_CMD(REPLY_ALIVE);
550 IWL_CMD(REPLY_ERROR);
551 IWL_CMD(REPLY_RXON);
552 IWL_CMD(REPLY_RXON_ASSOC);
553 IWL_CMD(REPLY_QOS_PARAM);
554 IWL_CMD(REPLY_RXON_TIMING);
555 IWL_CMD(REPLY_ADD_STA);
556 IWL_CMD(REPLY_REMOVE_STA);
557 IWL_CMD(REPLY_REMOVE_ALL_STA);
558 IWL_CMD(REPLY_TX);
559 IWL_CMD(REPLY_RATE_SCALE);
560 IWL_CMD(REPLY_LEDS_CMD);
561 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
562 IWL_CMD(RADAR_NOTIFICATION);
563 IWL_CMD(REPLY_QUIET_CMD);
564 IWL_CMD(REPLY_CHANNEL_SWITCH);
565 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
566 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
567 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
568 IWL_CMD(POWER_TABLE_CMD);
569 IWL_CMD(PM_SLEEP_NOTIFICATION);
570 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
571 IWL_CMD(REPLY_SCAN_CMD);
572 IWL_CMD(REPLY_SCAN_ABORT_CMD);
573 IWL_CMD(SCAN_START_NOTIFICATION);
574 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
575 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
576 IWL_CMD(BEACON_NOTIFICATION);
577 IWL_CMD(REPLY_TX_BEACON);
578 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
579 IWL_CMD(QUIET_NOTIFICATION);
580 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
581 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
582 IWL_CMD(REPLY_BT_CONFIG);
583 IWL_CMD(REPLY_STATISTICS_CMD);
584 IWL_CMD(STATISTICS_NOTIFICATION);
585 IWL_CMD(REPLY_CARD_STATE_CMD);
586 IWL_CMD(CARD_STATE_NOTIFICATION);
587 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
588 IWL_CMD(REPLY_CT_KILL_CONFIG_CMD);
589 IWL_CMD(SENSITIVITY_CMD);
590 IWL_CMD(REPLY_PHY_CALIBRATION_CMD);
591 IWL_CMD(REPLY_RX_PHY_CMD);
592 IWL_CMD(REPLY_RX_MPDU_CMD);
593 IWL_CMD(REPLY_4965_RX);
594 IWL_CMD(REPLY_COMPRESSED_BA);
595 default:
596 return "UNKNOWN";
597
598 }
599 }
600
601 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
602
603 /**
604 * iwl4965_enqueue_hcmd - enqueue a uCode command
605 * @priv: device private data point
606 * @cmd: a point to the ucode command structure
607 *
608 * The function returns < 0 values to indicate the operation is
609 * failed. On success, it turns the index (> 0) of command in the
610 * command queue.
611 */
612 static int iwl4965_enqueue_hcmd(struct iwl_priv *priv, struct iwl4965_host_cmd *cmd)
613 {
614 struct iwl4965_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
615 struct iwl4965_queue *q = &txq->q;
616 struct iwl4965_tfd_frame *tfd;
617 u32 *control_flags;
618 struct iwl4965_cmd *out_cmd;
619 u32 idx;
620 u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
621 dma_addr_t phys_addr;
622 int ret;
623 unsigned long flags;
624
625 /* If any of the command structures end up being larger than
626 * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
627 * we will need to increase the size of the TFD entries */
628 BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
629 !(cmd->meta.flags & CMD_SIZE_HUGE));
630
631 if (iwl4965_is_rfkill(priv)) {
632 IWL_DEBUG_INFO("Not sending command - RF KILL");
633 return -EIO;
634 }
635
636 if (iwl4965_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->write_ptr];
644 memset(tfd, 0, sizeof(*tfd));
645
646 control_flags = (u32 *) tfd;
647
648 idx = get_cmd_index(q, q->write_ptr, 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->write_ptr));
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 iwl4965_cmd, hdr);
666 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
667
668 IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
669 "%d bytes at %d[%d]:%d\n",
670 get_cmd_string(out_cmd->hdr.cmd),
671 out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
672 fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
673
674 txq->need_update = 1;
675
676 /* Set up entry in queue's byte count circular buffer */
677 ret = iwl4965_tx_queue_update_wr_ptr(priv, txq, 0);
678
679 /* Increment and update queue's write index */
680 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
681 iwl4965_tx_queue_update_write_ptr(priv, txq);
682
683 spin_unlock_irqrestore(&priv->hcmd_lock, flags);
684 return ret ? ret : idx;
685 }
686
687 static int iwl4965_send_cmd_async(struct iwl_priv *priv, struct iwl4965_host_cmd *cmd)
688 {
689 int ret;
690
691 BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
692
693 /* An asynchronous command can not expect an SKB to be set. */
694 BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
695
696 /* An asynchronous command MUST have a callback. */
697 BUG_ON(!cmd->meta.u.callback);
698
699 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
700 return -EBUSY;
701
702 ret = iwl4965_enqueue_hcmd(priv, cmd);
703 if (ret < 0) {
704 IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
705 get_cmd_string(cmd->id), ret);
706 return ret;
707 }
708 return 0;
709 }
710
711 static int iwl4965_send_cmd_sync(struct iwl_priv *priv, struct iwl4965_host_cmd *cmd)
712 {
713 int cmd_idx;
714 int ret;
715 static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */
716
717 BUG_ON(cmd->meta.flags & CMD_ASYNC);
718
719 /* A synchronous command can not have a callback set. */
720 BUG_ON(cmd->meta.u.callback != NULL);
721
722 if (atomic_xchg(&entry, 1)) {
723 IWL_ERROR("Error sending %s: Already sending a host command\n",
724 get_cmd_string(cmd->id));
725 return -EBUSY;
726 }
727
728 set_bit(STATUS_HCMD_ACTIVE, &priv->status);
729
730 if (cmd->meta.flags & CMD_WANT_SKB)
731 cmd->meta.source = &cmd->meta;
732
733 cmd_idx = iwl4965_enqueue_hcmd(priv, cmd);
734 if (cmd_idx < 0) {
735 ret = cmd_idx;
736 IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
737 get_cmd_string(cmd->id), ret);
738 goto out;
739 }
740
741 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
742 !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
743 HOST_COMPLETE_TIMEOUT);
744 if (!ret) {
745 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
746 IWL_ERROR("Error sending %s: time out after %dms.\n",
747 get_cmd_string(cmd->id),
748 jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
749
750 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
751 ret = -ETIMEDOUT;
752 goto cancel;
753 }
754 }
755
756 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
757 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
758 get_cmd_string(cmd->id));
759 ret = -ECANCELED;
760 goto fail;
761 }
762 if (test_bit(STATUS_FW_ERROR, &priv->status)) {
763 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
764 get_cmd_string(cmd->id));
765 ret = -EIO;
766 goto fail;
767 }
768 if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
769 IWL_ERROR("Error: Response NULL in '%s'\n",
770 get_cmd_string(cmd->id));
771 ret = -EIO;
772 goto out;
773 }
774
775 ret = 0;
776 goto out;
777
778 cancel:
779 if (cmd->meta.flags & CMD_WANT_SKB) {
780 struct iwl4965_cmd *qcmd;
781
782 /* Cancel the CMD_WANT_SKB flag for the cmd in the
783 * TX cmd queue. Otherwise in case the cmd comes
784 * in later, it will possibly set an invalid
785 * address (cmd->meta.source). */
786 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
787 qcmd->meta.flags &= ~CMD_WANT_SKB;
788 }
789 fail:
790 if (cmd->meta.u.skb) {
791 dev_kfree_skb_any(cmd->meta.u.skb);
792 cmd->meta.u.skb = NULL;
793 }
794 out:
795 atomic_set(&entry, 0);
796 return ret;
797 }
798
799 int iwl4965_send_cmd(struct iwl_priv *priv, struct iwl4965_host_cmd *cmd)
800 {
801 if (cmd->meta.flags & CMD_ASYNC)
802 return iwl4965_send_cmd_async(priv, cmd);
803
804 return iwl4965_send_cmd_sync(priv, cmd);
805 }
806
807 int iwl4965_send_cmd_pdu(struct iwl_priv *priv, u8 id, u16 len, const void *data)
808 {
809 struct iwl4965_host_cmd cmd = {
810 .id = id,
811 .len = len,
812 .data = data,
813 };
814
815 return iwl4965_send_cmd_sync(priv, &cmd);
816 }
817
818 static int __must_check iwl4965_send_cmd_u32(struct iwl_priv *priv, u8 id, u32 val)
819 {
820 struct iwl4965_host_cmd cmd = {
821 .id = id,
822 .len = sizeof(val),
823 .data = &val,
824 };
825
826 return iwl4965_send_cmd_sync(priv, &cmd);
827 }
828
829 int iwl4965_send_statistics_request(struct iwl_priv *priv)
830 {
831 return iwl4965_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
832 }
833
834 /**
835 * iwl4965_rxon_add_station - add station into station table.
836 *
837 * there is only one AP station with id= IWL_AP_ID
838 * NOTE: mutex must be held before calling this fnction
839 */
840 static int iwl4965_rxon_add_station(struct iwl_priv *priv,
841 const u8 *addr, int is_ap)
842 {
843 u8 sta_id;
844
845 /* Add station to device's station table */
846 #ifdef CONFIG_IWL4965_HT
847 struct ieee80211_conf *conf = &priv->hw->conf;
848 struct ieee80211_ht_info *cur_ht_config = &conf->ht_conf;
849
850 if ((is_ap) &&
851 (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) &&
852 (priv->iw_mode == IEEE80211_IF_TYPE_STA))
853 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
854 0, cur_ht_config);
855 else
856 #endif /* CONFIG_IWL4965_HT */
857 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
858 0, NULL);
859
860 /* Set up default rate scaling table in device's station table */
861 iwl4965_add_station(priv, addr, is_ap);
862
863 return sta_id;
864 }
865
866 /**
867 * iwl4965_check_rxon_cmd - validate RXON structure is valid
868 *
869 * NOTE: This is really only useful during development and can eventually
870 * be #ifdef'd out once the driver is stable and folks aren't actively
871 * making changes
872 */
873 static int iwl4965_check_rxon_cmd(struct iwl4965_rxon_cmd *rxon)
874 {
875 int error = 0;
876 int counter = 1;
877
878 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
879 error |= le32_to_cpu(rxon->flags &
880 (RXON_FLG_TGJ_NARROW_BAND_MSK |
881 RXON_FLG_RADAR_DETECT_MSK));
882 if (error)
883 IWL_WARNING("check 24G fields %d | %d\n",
884 counter++, error);
885 } else {
886 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
887 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
888 if (error)
889 IWL_WARNING("check 52 fields %d | %d\n",
890 counter++, error);
891 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
892 if (error)
893 IWL_WARNING("check 52 CCK %d | %d\n",
894 counter++, error);
895 }
896 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
897 if (error)
898 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
899
900 /* make sure basic rates 6Mbps and 1Mbps are supported */
901 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
902 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
903 if (error)
904 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
905
906 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
907 if (error)
908 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
909
910 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
911 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
912 if (error)
913 IWL_WARNING("check CCK and short slot %d | %d\n",
914 counter++, error);
915
916 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
917 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
918 if (error)
919 IWL_WARNING("check CCK & auto detect %d | %d\n",
920 counter++, error);
921
922 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
923 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
924 if (error)
925 IWL_WARNING("check TGG and auto detect %d | %d\n",
926 counter++, error);
927
928 if (error)
929 IWL_WARNING("Tuning to channel %d\n",
930 le16_to_cpu(rxon->channel));
931
932 if (error) {
933 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
934 return -1;
935 }
936 return 0;
937 }
938
939 /**
940 * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
941 * @priv: staging_rxon is compared to active_rxon
942 *
943 * If the RXON structure is changing enough to require a new tune,
944 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
945 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
946 */
947 static int iwl4965_full_rxon_required(struct iwl_priv *priv)
948 {
949
950 /* These items are only settable from the full RXON command */
951 if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
952 compare_ether_addr(priv->staging_rxon.bssid_addr,
953 priv->active_rxon.bssid_addr) ||
954 compare_ether_addr(priv->staging_rxon.node_addr,
955 priv->active_rxon.node_addr) ||
956 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
957 priv->active_rxon.wlap_bssid_addr) ||
958 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
959 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
960 (priv->staging_rxon.air_propagation !=
961 priv->active_rxon.air_propagation) ||
962 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
963 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
964 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
965 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
966 (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
967 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
968 return 1;
969
970 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
971 * be updated with the RXON_ASSOC command -- however only some
972 * flag transitions are allowed using RXON_ASSOC */
973
974 /* Check if we are not switching bands */
975 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
976 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
977 return 1;
978
979 /* Check if we are switching association toggle */
980 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
981 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
982 return 1;
983
984 return 0;
985 }
986
987 static int iwl4965_send_rxon_assoc(struct iwl_priv *priv)
988 {
989 int rc = 0;
990 struct iwl4965_rx_packet *res = NULL;
991 struct iwl4965_rxon_assoc_cmd rxon_assoc;
992 struct iwl4965_host_cmd cmd = {
993 .id = REPLY_RXON_ASSOC,
994 .len = sizeof(rxon_assoc),
995 .meta.flags = CMD_WANT_SKB,
996 .data = &rxon_assoc,
997 };
998 const struct iwl4965_rxon_cmd *rxon1 = &priv->staging_rxon;
999 const struct iwl4965_rxon_cmd *rxon2 = &priv->active_rxon;
1000
1001 if ((rxon1->flags == rxon2->flags) &&
1002 (rxon1->filter_flags == rxon2->filter_flags) &&
1003 (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1004 (rxon1->ofdm_ht_single_stream_basic_rates ==
1005 rxon2->ofdm_ht_single_stream_basic_rates) &&
1006 (rxon1->ofdm_ht_dual_stream_basic_rates ==
1007 rxon2->ofdm_ht_dual_stream_basic_rates) &&
1008 (rxon1->rx_chain == rxon2->rx_chain) &&
1009 (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1010 IWL_DEBUG_INFO("Using current RXON_ASSOC. Not resending.\n");
1011 return 0;
1012 }
1013
1014 rxon_assoc.flags = priv->staging_rxon.flags;
1015 rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1016 rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1017 rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1018 rxon_assoc.reserved = 0;
1019 rxon_assoc.ofdm_ht_single_stream_basic_rates =
1020 priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
1021 rxon_assoc.ofdm_ht_dual_stream_basic_rates =
1022 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
1023 rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
1024
1025 rc = iwl4965_send_cmd_sync(priv, &cmd);
1026 if (rc)
1027 return rc;
1028
1029 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1030 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1031 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1032 rc = -EIO;
1033 }
1034
1035 priv->alloc_rxb_skb--;
1036 dev_kfree_skb_any(cmd.meta.u.skb);
1037
1038 return rc;
1039 }
1040
1041 /**
1042 * iwl4965_commit_rxon - commit staging_rxon to hardware
1043 *
1044 * The RXON command in staging_rxon is committed to the hardware and
1045 * the active_rxon structure is updated with the new data. This
1046 * function correctly transitions out of the RXON_ASSOC_MSK state if
1047 * a HW tune is required based on the RXON structure changes.
1048 */
1049 static int iwl4965_commit_rxon(struct iwl_priv *priv)
1050 {
1051 /* cast away the const for active_rxon in this function */
1052 struct iwl4965_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1053 DECLARE_MAC_BUF(mac);
1054 int rc = 0;
1055
1056 if (!iwl4965_is_alive(priv))
1057 return -1;
1058
1059 /* always get timestamp with Rx frame */
1060 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1061
1062 rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
1063 if (rc) {
1064 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
1065 return -EINVAL;
1066 }
1067
1068 /* If we don't need to send a full RXON, we can use
1069 * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
1070 * and other flags for the current radio configuration. */
1071 if (!iwl4965_full_rxon_required(priv)) {
1072 rc = iwl4965_send_rxon_assoc(priv);
1073 if (rc) {
1074 IWL_ERROR("Error setting RXON_ASSOC "
1075 "configuration (%d).\n", rc);
1076 return rc;
1077 }
1078
1079 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1080
1081 return 0;
1082 }
1083
1084 /* station table will be cleared */
1085 priv->assoc_station_added = 0;
1086
1087 #ifdef CONFIG_IWL4965_SENSITIVITY
1088 priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1089 if (!priv->error_recovering)
1090 priv->start_calib = 0;
1091
1092 iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1093 #endif /* CONFIG_IWL4965_SENSITIVITY */
1094
1095 /* If we are currently associated and the new config requires
1096 * an RXON_ASSOC and the new config wants the associated mask enabled,
1097 * we must clear the associated from the active configuration
1098 * before we apply the new config */
1099 if (iwl4965_is_associated(priv) &&
1100 (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1101 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1102 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1103
1104 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1105 sizeof(struct iwl4965_rxon_cmd),
1106 &priv->active_rxon);
1107
1108 /* If the mask clearing failed then we set
1109 * active_rxon back to what it was previously */
1110 if (rc) {
1111 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1112 IWL_ERROR("Error clearing ASSOC_MSK on current "
1113 "configuration (%d).\n", rc);
1114 return rc;
1115 }
1116 }
1117
1118 IWL_DEBUG_INFO("Sending RXON\n"
1119 "* with%s RXON_FILTER_ASSOC_MSK\n"
1120 "* channel = %d\n"
1121 "* bssid = %s\n",
1122 ((priv->staging_rxon.filter_flags &
1123 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1124 le16_to_cpu(priv->staging_rxon.channel),
1125 print_mac(mac, priv->staging_rxon.bssid_addr));
1126
1127 /* Apply the new configuration */
1128 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1129 sizeof(struct iwl4965_rxon_cmd), &priv->staging_rxon);
1130 if (rc) {
1131 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1132 return rc;
1133 }
1134
1135 iwlcore_clear_stations_table(priv);
1136
1137 #ifdef CONFIG_IWL4965_SENSITIVITY
1138 if (!priv->error_recovering)
1139 priv->start_calib = 0;
1140
1141 priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1142 iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1143 #endif /* CONFIG_IWL4965_SENSITIVITY */
1144
1145 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1146
1147 /* If we issue a new RXON command which required a tune then we must
1148 * send a new TXPOWER command or we won't be able to Tx any frames */
1149 rc = iwl4965_hw_reg_send_txpower(priv);
1150 if (rc) {
1151 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1152 return rc;
1153 }
1154
1155 /* Add the broadcast address so we can send broadcast frames */
1156 if (iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0) ==
1157 IWL_INVALID_STATION) {
1158 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1159 return -EIO;
1160 }
1161
1162 /* If we have set the ASSOC_MSK and we are in BSS mode then
1163 * add the IWL_AP_ID to the station rate table */
1164 if (iwl4965_is_associated(priv) &&
1165 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
1166 if (iwl4965_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
1167 == IWL_INVALID_STATION) {
1168 IWL_ERROR("Error adding AP address for transmit.\n");
1169 return -EIO;
1170 }
1171 priv->assoc_station_added = 1;
1172 }
1173
1174 return 0;
1175 }
1176
1177 static int iwl4965_send_bt_config(struct iwl_priv *priv)
1178 {
1179 struct iwl4965_bt_cmd bt_cmd = {
1180 .flags = 3,
1181 .lead_time = 0xAA,
1182 .max_kill = 1,
1183 .kill_ack_mask = 0,
1184 .kill_cts_mask = 0,
1185 };
1186
1187 return iwl4965_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1188 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
1189 }
1190
1191 static int iwl4965_send_scan_abort(struct iwl_priv *priv)
1192 {
1193 int rc = 0;
1194 struct iwl4965_rx_packet *res;
1195 struct iwl4965_host_cmd cmd = {
1196 .id = REPLY_SCAN_ABORT_CMD,
1197 .meta.flags = CMD_WANT_SKB,
1198 };
1199
1200 /* If there isn't a scan actively going on in the hardware
1201 * then we are in between scan bands and not actually
1202 * actively scanning, so don't send the abort command */
1203 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1204 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1205 return 0;
1206 }
1207
1208 rc = iwl4965_send_cmd_sync(priv, &cmd);
1209 if (rc) {
1210 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1211 return rc;
1212 }
1213
1214 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1215 if (res->u.status != CAN_ABORT_STATUS) {
1216 /* The scan abort will return 1 for success or
1217 * 2 for "failure". A failure condition can be
1218 * due to simply not being in an active scan which
1219 * can occur if we send the scan abort before we
1220 * the microcode has notified us that a scan is
1221 * completed. */
1222 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1223 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1224 clear_bit(STATUS_SCAN_HW, &priv->status);
1225 }
1226
1227 dev_kfree_skb_any(cmd.meta.u.skb);
1228
1229 return rc;
1230 }
1231
1232 static int iwl4965_card_state_sync_callback(struct iwl_priv *priv,
1233 struct iwl4965_cmd *cmd,
1234 struct sk_buff *skb)
1235 {
1236 return 1;
1237 }
1238
1239 /*
1240 * CARD_STATE_CMD
1241 *
1242 * Use: Sets the device's internal card state to enable, disable, or halt
1243 *
1244 * When in the 'enable' state the card operates as normal.
1245 * When in the 'disable' state, the card enters into a low power mode.
1246 * When in the 'halt' state, the card is shut down and must be fully
1247 * restarted to come back on.
1248 */
1249 static int iwl4965_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
1250 {
1251 struct iwl4965_host_cmd cmd = {
1252 .id = REPLY_CARD_STATE_CMD,
1253 .len = sizeof(u32),
1254 .data = &flags,
1255 .meta.flags = meta_flag,
1256 };
1257
1258 if (meta_flag & CMD_ASYNC)
1259 cmd.meta.u.callback = iwl4965_card_state_sync_callback;
1260
1261 return iwl4965_send_cmd(priv, &cmd);
1262 }
1263
1264 static int iwl4965_add_sta_sync_callback(struct iwl_priv *priv,
1265 struct iwl4965_cmd *cmd, struct sk_buff *skb)
1266 {
1267 struct iwl4965_rx_packet *res = NULL;
1268
1269 if (!skb) {
1270 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1271 return 1;
1272 }
1273
1274 res = (struct iwl4965_rx_packet *)skb->data;
1275 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1276 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1277 res->hdr.flags);
1278 return 1;
1279 }
1280
1281 switch (res->u.add_sta.status) {
1282 case ADD_STA_SUCCESS_MSK:
1283 break;
1284 default:
1285 break;
1286 }
1287
1288 /* We didn't cache the SKB; let the caller free it */
1289 return 1;
1290 }
1291
1292 int iwl4965_send_add_station(struct iwl_priv *priv,
1293 struct iwl4965_addsta_cmd *sta, u8 flags)
1294 {
1295 struct iwl4965_rx_packet *res = NULL;
1296 int rc = 0;
1297 struct iwl4965_host_cmd cmd = {
1298 .id = REPLY_ADD_STA,
1299 .len = sizeof(struct iwl4965_addsta_cmd),
1300 .meta.flags = flags,
1301 .data = sta,
1302 };
1303
1304 if (flags & CMD_ASYNC)
1305 cmd.meta.u.callback = iwl4965_add_sta_sync_callback;
1306 else
1307 cmd.meta.flags |= CMD_WANT_SKB;
1308
1309 rc = iwl4965_send_cmd(priv, &cmd);
1310
1311 if (rc || (flags & CMD_ASYNC))
1312 return rc;
1313
1314 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1315 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1316 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1317 res->hdr.flags);
1318 rc = -EIO;
1319 }
1320
1321 if (rc == 0) {
1322 switch (res->u.add_sta.status) {
1323 case ADD_STA_SUCCESS_MSK:
1324 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1325 break;
1326 default:
1327 rc = -EIO;
1328 IWL_WARNING("REPLY_ADD_STA failed\n");
1329 break;
1330 }
1331 }
1332
1333 priv->alloc_rxb_skb--;
1334 dev_kfree_skb_any(cmd.meta.u.skb);
1335
1336 return rc;
1337 }
1338
1339 static int iwl4965_update_sta_key_info(struct iwl_priv *priv,
1340 struct ieee80211_key_conf *keyconf,
1341 u8 sta_id)
1342 {
1343 unsigned long flags;
1344 __le16 key_flags = 0;
1345
1346 switch (keyconf->alg) {
1347 case ALG_CCMP:
1348 key_flags |= STA_KEY_FLG_CCMP;
1349 key_flags |= cpu_to_le16(
1350 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1351 key_flags &= ~STA_KEY_FLG_INVALID;
1352 break;
1353 case ALG_TKIP:
1354 case ALG_WEP:
1355 default:
1356 return -EINVAL;
1357 }
1358 spin_lock_irqsave(&priv->sta_lock, flags);
1359 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1360 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1361 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1362 keyconf->keylen);
1363
1364 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1365 keyconf->keylen);
1366 priv->stations[sta_id].sta.key.key_flags = key_flags;
1367 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1368 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1369
1370 spin_unlock_irqrestore(&priv->sta_lock, flags);
1371
1372 IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1373 iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1374 return 0;
1375 }
1376
1377 static int iwl4965_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
1378 {
1379 unsigned long flags;
1380
1381 spin_lock_irqsave(&priv->sta_lock, flags);
1382 memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl4965_hw_key));
1383 memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl4965_keyinfo));
1384 priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1385 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1386 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1387 spin_unlock_irqrestore(&priv->sta_lock, flags);
1388
1389 IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1390 iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1391 return 0;
1392 }
1393
1394 static void iwl4965_clear_free_frames(struct iwl_priv *priv)
1395 {
1396 struct list_head *element;
1397
1398 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1399 priv->frames_count);
1400
1401 while (!list_empty(&priv->free_frames)) {
1402 element = priv->free_frames.next;
1403 list_del(element);
1404 kfree(list_entry(element, struct iwl4965_frame, list));
1405 priv->frames_count--;
1406 }
1407
1408 if (priv->frames_count) {
1409 IWL_WARNING("%d frames still in use. Did we lose one?\n",
1410 priv->frames_count);
1411 priv->frames_count = 0;
1412 }
1413 }
1414
1415 static struct iwl4965_frame *iwl4965_get_free_frame(struct iwl_priv *priv)
1416 {
1417 struct iwl4965_frame *frame;
1418 struct list_head *element;
1419 if (list_empty(&priv->free_frames)) {
1420 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1421 if (!frame) {
1422 IWL_ERROR("Could not allocate frame!\n");
1423 return NULL;
1424 }
1425
1426 priv->frames_count++;
1427 return frame;
1428 }
1429
1430 element = priv->free_frames.next;
1431 list_del(element);
1432 return list_entry(element, struct iwl4965_frame, list);
1433 }
1434
1435 static void iwl4965_free_frame(struct iwl_priv *priv, struct iwl4965_frame *frame)
1436 {
1437 memset(frame, 0, sizeof(*frame));
1438 list_add(&frame->list, &priv->free_frames);
1439 }
1440
1441 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
1442 struct ieee80211_hdr *hdr,
1443 const u8 *dest, int left)
1444 {
1445
1446 if (!iwl4965_is_associated(priv) || !priv->ibss_beacon ||
1447 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1448 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1449 return 0;
1450
1451 if (priv->ibss_beacon->len > left)
1452 return 0;
1453
1454 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1455
1456 return priv->ibss_beacon->len;
1457 }
1458
1459 static u8 iwl4965_rate_get_lowest_plcp(int rate_mask)
1460 {
1461 u8 i;
1462
1463 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1464 i = iwl4965_rates[i].next_ieee) {
1465 if (rate_mask & (1 << i))
1466 return iwl4965_rates[i].plcp;
1467 }
1468
1469 return IWL_RATE_INVALID;
1470 }
1471
1472 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
1473 {
1474 struct iwl4965_frame *frame;
1475 unsigned int frame_size;
1476 int rc;
1477 u8 rate;
1478
1479 frame = iwl4965_get_free_frame(priv);
1480
1481 if (!frame) {
1482 IWL_ERROR("Could not obtain free frame buffer for beacon "
1483 "command.\n");
1484 return -ENOMEM;
1485 }
1486
1487 if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1488 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic &
1489 0xFF0);
1490 if (rate == IWL_INVALID_RATE)
1491 rate = IWL_RATE_6M_PLCP;
1492 } else {
1493 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1494 if (rate == IWL_INVALID_RATE)
1495 rate = IWL_RATE_1M_PLCP;
1496 }
1497
1498 frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
1499
1500 rc = iwl4965_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1501 &frame->u.cmd[0]);
1502
1503 iwl4965_free_frame(priv, frame);
1504
1505 return rc;
1506 }
1507
1508 /******************************************************************************
1509 *
1510 * Misc. internal state and helper functions
1511 *
1512 ******************************************************************************/
1513
1514 static void iwl4965_unset_hw_setting(struct iwl_priv *priv)
1515 {
1516 if (priv->hw_setting.shared_virt)
1517 pci_free_consistent(priv->pci_dev,
1518 sizeof(struct iwl4965_shared),
1519 priv->hw_setting.shared_virt,
1520 priv->hw_setting.shared_phys);
1521 }
1522
1523 /**
1524 * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
1525 *
1526 * return : set the bit for each supported rate insert in ie
1527 */
1528 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1529 u16 basic_rate, int *left)
1530 {
1531 u16 ret_rates = 0, bit;
1532 int i;
1533 u8 *cnt = ie;
1534 u8 *rates = ie + 1;
1535
1536 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1537 if (bit & supported_rate) {
1538 ret_rates |= bit;
1539 rates[*cnt] = iwl4965_rates[i].ieee |
1540 ((bit & basic_rate) ? 0x80 : 0x00);
1541 (*cnt)++;
1542 (*left)--;
1543 if ((*left <= 0) ||
1544 (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1545 break;
1546 }
1547 }
1548
1549 return ret_rates;
1550 }
1551
1552 /**
1553 * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
1554 */
1555 static u16 iwl4965_fill_probe_req(struct iwl_priv *priv,
1556 enum ieee80211_band band,
1557 struct ieee80211_mgmt *frame,
1558 int left, int is_direct)
1559 {
1560 int len = 0;
1561 u8 *pos = NULL;
1562 u16 active_rates, ret_rates, cck_rates, active_rate_basic;
1563 #ifdef CONFIG_IWL4965_HT
1564 const struct ieee80211_supported_band *sband =
1565 iwl4965_get_hw_mode(priv, band);
1566 #endif /* CONFIG_IWL4965_HT */
1567
1568 /* Make sure there is enough space for the probe request,
1569 * two mandatory IEs and the data */
1570 left -= 24;
1571 if (left < 0)
1572 return 0;
1573 len += 24;
1574
1575 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1576 memcpy(frame->da, iwl4965_broadcast_addr, ETH_ALEN);
1577 memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1578 memcpy(frame->bssid, iwl4965_broadcast_addr, ETH_ALEN);
1579 frame->seq_ctrl = 0;
1580
1581 /* fill in our indirect SSID IE */
1582 /* ...next IE... */
1583
1584 left -= 2;
1585 if (left < 0)
1586 return 0;
1587 len += 2;
1588 pos = &(frame->u.probe_req.variable[0]);
1589 *pos++ = WLAN_EID_SSID;
1590 *pos++ = 0;
1591
1592 /* fill in our direct SSID IE... */
1593 if (is_direct) {
1594 /* ...next IE... */
1595 left -= 2 + priv->essid_len;
1596 if (left < 0)
1597 return 0;
1598 /* ... fill it in... */
1599 *pos++ = WLAN_EID_SSID;
1600 *pos++ = priv->essid_len;
1601 memcpy(pos, priv->essid, priv->essid_len);
1602 pos += priv->essid_len;
1603 len += 2 + priv->essid_len;
1604 }
1605
1606 /* fill in supported rate */
1607 /* ...next IE... */
1608 left -= 2;
1609 if (left < 0)
1610 return 0;
1611
1612 /* ... fill it in... */
1613 *pos++ = WLAN_EID_SUPP_RATES;
1614 *pos = 0;
1615
1616 /* exclude 60M rate */
1617 active_rates = priv->rates_mask;
1618 active_rates &= ~IWL_RATE_60M_MASK;
1619
1620 active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
1621
1622 cck_rates = IWL_CCK_RATES_MASK & active_rates;
1623 ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
1624 active_rate_basic, &left);
1625 active_rates &= ~ret_rates;
1626
1627 ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
1628 active_rate_basic, &left);
1629 active_rates &= ~ret_rates;
1630
1631 len += 2 + *pos;
1632 pos += (*pos) + 1;
1633 if (active_rates == 0)
1634 goto fill_end;
1635
1636 /* fill in supported extended rate */
1637 /* ...next IE... */
1638 left -= 2;
1639 if (left < 0)
1640 return 0;
1641 /* ... fill it in... */
1642 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1643 *pos = 0;
1644 iwl4965_supported_rate_to_ie(pos, active_rates,
1645 active_rate_basic, &left);
1646 if (*pos > 0)
1647 len += 2 + *pos;
1648
1649 #ifdef CONFIG_IWL4965_HT
1650 if (sband && sband->ht_info.ht_supported) {
1651 struct ieee80211_ht_cap *ht_cap;
1652 pos += (*pos) + 1;
1653 *pos++ = WLAN_EID_HT_CAPABILITY;
1654 *pos++ = sizeof(struct ieee80211_ht_cap);
1655 ht_cap = (struct ieee80211_ht_cap *)pos;
1656 ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
1657 memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
1658 ht_cap->ampdu_params_info =(sband->ht_info.ampdu_factor &
1659 IEEE80211_HT_CAP_AMPDU_FACTOR) |
1660 ((sband->ht_info.ampdu_density << 2) &
1661 IEEE80211_HT_CAP_AMPDU_DENSITY);
1662 len += 2 + sizeof(struct ieee80211_ht_cap);
1663 }
1664 #endif /*CONFIG_IWL4965_HT */
1665
1666 fill_end:
1667 return (u16)len;
1668 }
1669
1670 /*
1671 * QoS support
1672 */
1673 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
1674 struct iwl4965_qosparam_cmd *qos)
1675 {
1676
1677 return iwl4965_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1678 sizeof(struct iwl4965_qosparam_cmd), qos);
1679 }
1680
1681 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
1682 {
1683 unsigned long flags;
1684
1685 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1686 return;
1687
1688 if (!priv->qos_data.qos_enable)
1689 return;
1690
1691 spin_lock_irqsave(&priv->lock, flags);
1692 priv->qos_data.def_qos_parm.qos_flags = 0;
1693
1694 if (priv->qos_data.qos_cap.q_AP.queue_request &&
1695 !priv->qos_data.qos_cap.q_AP.txop_request)
1696 priv->qos_data.def_qos_parm.qos_flags |=
1697 QOS_PARAM_FLG_TXOP_TYPE_MSK;
1698 if (priv->qos_data.qos_active)
1699 priv->qos_data.def_qos_parm.qos_flags |=
1700 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1701
1702 #ifdef CONFIG_IWL4965_HT
1703 if (priv->current_ht_config.is_ht)
1704 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
1705 #endif /* CONFIG_IWL4965_HT */
1706
1707 spin_unlock_irqrestore(&priv->lock, flags);
1708
1709 if (force || iwl4965_is_associated(priv)) {
1710 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
1711 priv->qos_data.qos_active,
1712 priv->qos_data.def_qos_parm.qos_flags);
1713
1714 iwl4965_send_qos_params_command(priv,
1715 &(priv->qos_data.def_qos_parm));
1716 }
1717 }
1718
1719 /*
1720 * Power management (not Tx power!) functions
1721 */
1722 #define MSEC_TO_USEC 1024
1723
1724 #define NOSLP __constant_cpu_to_le16(0), 0, 0
1725 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
1726 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
1727 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
1728 __constant_cpu_to_le32(X1), \
1729 __constant_cpu_to_le32(X2), \
1730 __constant_cpu_to_le32(X3), \
1731 __constant_cpu_to_le32(X4)}
1732
1733
1734 /* default power management (not Tx power) table values */
1735 /* for tim 0-10 */
1736 static struct iwl4965_power_vec_entry range_0[IWL_POWER_AC] = {
1737 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1738 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
1739 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
1740 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
1741 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
1742 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
1743 };
1744
1745 /* for tim > 10 */
1746 static struct iwl4965_power_vec_entry range_1[IWL_POWER_AC] = {
1747 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1748 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
1749 SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
1750 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
1751 SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
1752 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
1753 SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
1754 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
1755 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
1756 SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
1757 };
1758
1759 int iwl4965_power_init_handle(struct iwl_priv *priv)
1760 {
1761 int rc = 0, i;
1762 struct iwl4965_power_mgr *pow_data;
1763 int size = sizeof(struct iwl4965_power_vec_entry) * IWL_POWER_AC;
1764 u16 pci_pm;
1765
1766 IWL_DEBUG_POWER("Initialize power \n");
1767
1768 pow_data = &(priv->power_data);
1769
1770 memset(pow_data, 0, sizeof(*pow_data));
1771
1772 pow_data->active_index = IWL_POWER_RANGE_0;
1773 pow_data->dtim_val = 0xffff;
1774
1775 memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
1776 memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
1777
1778 rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
1779 if (rc != 0)
1780 return 0;
1781 else {
1782 struct iwl4965_powertable_cmd *cmd;
1783
1784 IWL_DEBUG_POWER("adjust power command flags\n");
1785
1786 for (i = 0; i < IWL_POWER_AC; i++) {
1787 cmd = &pow_data->pwr_range_0[i].cmd;
1788
1789 if (pci_pm & 0x1)
1790 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
1791 else
1792 cmd->flags |= IWL_POWER_PCI_PM_MSK;
1793 }
1794 }
1795 return rc;
1796 }
1797
1798 static int iwl4965_update_power_cmd(struct iwl_priv *priv,
1799 struct iwl4965_powertable_cmd *cmd, u32 mode)
1800 {
1801 int rc = 0, i;
1802 u8 skip;
1803 u32 max_sleep = 0;
1804 struct iwl4965_power_vec_entry *range;
1805 u8 period = 0;
1806 struct iwl4965_power_mgr *pow_data;
1807
1808 if (mode > IWL_POWER_INDEX_5) {
1809 IWL_DEBUG_POWER("Error invalid power mode \n");
1810 return -1;
1811 }
1812 pow_data = &(priv->power_data);
1813
1814 if (pow_data->active_index == IWL_POWER_RANGE_0)
1815 range = &pow_data->pwr_range_0[0];
1816 else
1817 range = &pow_data->pwr_range_1[1];
1818
1819 memcpy(cmd, &range[mode].cmd, sizeof(struct iwl4965_powertable_cmd));
1820
1821 #ifdef IWL_MAC80211_DISABLE
1822 if (priv->assoc_network != NULL) {
1823 unsigned long flags;
1824
1825 period = priv->assoc_network->tim.tim_period;
1826 }
1827 #endif /*IWL_MAC80211_DISABLE */
1828 skip = range[mode].no_dtim;
1829
1830 if (period == 0) {
1831 period = 1;
1832 skip = 0;
1833 }
1834
1835 if (skip == 0) {
1836 max_sleep = period;
1837 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
1838 } else {
1839 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
1840 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
1841 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
1842 }
1843
1844 for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
1845 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
1846 cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
1847 }
1848
1849 IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
1850 IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
1851 IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
1852 IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
1853 le32_to_cpu(cmd->sleep_interval[0]),
1854 le32_to_cpu(cmd->sleep_interval[1]),
1855 le32_to_cpu(cmd->sleep_interval[2]),
1856 le32_to_cpu(cmd->sleep_interval[3]),
1857 le32_to_cpu(cmd->sleep_interval[4]));
1858
1859 return rc;
1860 }
1861
1862 static int iwl4965_send_power_mode(struct iwl_priv *priv, u32 mode)
1863 {
1864 u32 uninitialized_var(final_mode);
1865 int rc;
1866 struct iwl4965_powertable_cmd cmd;
1867
1868 /* If on battery, set to 3,
1869 * if plugged into AC power, set to CAM ("continuously aware mode"),
1870 * else user level */
1871 switch (mode) {
1872 case IWL_POWER_BATTERY:
1873 final_mode = IWL_POWER_INDEX_3;
1874 break;
1875 case IWL_POWER_AC:
1876 final_mode = IWL_POWER_MODE_CAM;
1877 break;
1878 default:
1879 final_mode = mode;
1880 break;
1881 }
1882
1883 cmd.keep_alive_beacons = 0;
1884
1885 iwl4965_update_power_cmd(priv, &cmd, final_mode);
1886
1887 rc = iwl4965_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
1888
1889 if (final_mode == IWL_POWER_MODE_CAM)
1890 clear_bit(STATUS_POWER_PMI, &priv->status);
1891 else
1892 set_bit(STATUS_POWER_PMI, &priv->status);
1893
1894 return rc;
1895 }
1896
1897 int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
1898 {
1899 /* Filter incoming packets to determine if they are targeted toward
1900 * this network, discarding packets coming from ourselves */
1901 switch (priv->iw_mode) {
1902 case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
1903 /* packets from our adapter are dropped (echo) */
1904 if (!compare_ether_addr(header->addr2, priv->mac_addr))
1905 return 0;
1906 /* {broad,multi}cast packets to our IBSS go through */
1907 if (is_multicast_ether_addr(header->addr1))
1908 return !compare_ether_addr(header->addr3, priv->bssid);
1909 /* packets to our adapter go through */
1910 return !compare_ether_addr(header->addr1, priv->mac_addr);
1911 case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
1912 /* packets from our adapter are dropped (echo) */
1913 if (!compare_ether_addr(header->addr3, priv->mac_addr))
1914 return 0;
1915 /* {broad,multi}cast packets to our BSS go through */
1916 if (is_multicast_ether_addr(header->addr1))
1917 return !compare_ether_addr(header->addr2, priv->bssid);
1918 /* packets to our adapter go through */
1919 return !compare_ether_addr(header->addr1, priv->mac_addr);
1920 }
1921
1922 return 1;
1923 }
1924
1925 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1926
1927 static const char *iwl4965_get_tx_fail_reason(u32 status)
1928 {
1929 switch (status & TX_STATUS_MSK) {
1930 case TX_STATUS_SUCCESS:
1931 return "SUCCESS";
1932 TX_STATUS_ENTRY(SHORT_LIMIT);
1933 TX_STATUS_ENTRY(LONG_LIMIT);
1934 TX_STATUS_ENTRY(FIFO_UNDERRUN);
1935 TX_STATUS_ENTRY(MGMNT_ABORT);
1936 TX_STATUS_ENTRY(NEXT_FRAG);
1937 TX_STATUS_ENTRY(LIFE_EXPIRE);
1938 TX_STATUS_ENTRY(DEST_PS);
1939 TX_STATUS_ENTRY(ABORTED);
1940 TX_STATUS_ENTRY(BT_RETRY);
1941 TX_STATUS_ENTRY(STA_INVALID);
1942 TX_STATUS_ENTRY(FRAG_DROPPED);
1943 TX_STATUS_ENTRY(TID_DISABLE);
1944 TX_STATUS_ENTRY(FRAME_FLUSHED);
1945 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
1946 TX_STATUS_ENTRY(TX_LOCKED);
1947 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
1948 }
1949
1950 return "UNKNOWN";
1951 }
1952
1953 /**
1954 * iwl4965_scan_cancel - Cancel any currently executing HW scan
1955 *
1956 * NOTE: priv->mutex is not required before calling this function
1957 */
1958 static int iwl4965_scan_cancel(struct iwl_priv *priv)
1959 {
1960 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1961 clear_bit(STATUS_SCANNING, &priv->status);
1962 return 0;
1963 }
1964
1965 if (test_bit(STATUS_SCANNING, &priv->status)) {
1966 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1967 IWL_DEBUG_SCAN("Queuing scan abort.\n");
1968 set_bit(STATUS_SCAN_ABORTING, &priv->status);
1969 queue_work(priv->workqueue, &priv->abort_scan);
1970
1971 } else
1972 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
1973
1974 return test_bit(STATUS_SCANNING, &priv->status);
1975 }
1976
1977 return 0;
1978 }
1979
1980 /**
1981 * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
1982 * @ms: amount of time to wait (in milliseconds) for scan to abort
1983 *
1984 * NOTE: priv->mutex must be held before calling this function
1985 */
1986 static int iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
1987 {
1988 unsigned long now = jiffies;
1989 int ret;
1990
1991 ret = iwl4965_scan_cancel(priv);
1992 if (ret && ms) {
1993 mutex_unlock(&priv->mutex);
1994 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
1995 test_bit(STATUS_SCANNING, &priv->status))
1996 msleep(1);
1997 mutex_lock(&priv->mutex);
1998
1999 return test_bit(STATUS_SCANNING, &priv->status);
2000 }
2001
2002 return ret;
2003 }
2004
2005 static void iwl4965_sequence_reset(struct iwl_priv *priv)
2006 {
2007 /* Reset ieee stats */
2008
2009 /* We don't reset the net_device_stats (ieee->stats) on
2010 * re-association */
2011
2012 priv->last_seq_num = -1;
2013 priv->last_frag_num = -1;
2014 priv->last_packet_time = 0;
2015
2016 iwl4965_scan_cancel(priv);
2017 }
2018
2019 #define MAX_UCODE_BEACON_INTERVAL 4096
2020 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
2021
2022 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
2023 {
2024 u16 new_val = 0;
2025 u16 beacon_factor = 0;
2026
2027 beacon_factor =
2028 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2029 / MAX_UCODE_BEACON_INTERVAL;
2030 new_val = beacon_val / beacon_factor;
2031
2032 return cpu_to_le16(new_val);
2033 }
2034
2035 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
2036 {
2037 u64 interval_tm_unit;
2038 u64 tsf, result;
2039 unsigned long flags;
2040 struct ieee80211_conf *conf = NULL;
2041 u16 beacon_int = 0;
2042
2043 conf = ieee80211_get_hw_conf(priv->hw);
2044
2045 spin_lock_irqsave(&priv->lock, flags);
2046 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2047 priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2048
2049 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2050
2051 tsf = priv->timestamp1;
2052 tsf = ((tsf << 32) | priv->timestamp0);
2053
2054 beacon_int = priv->beacon_int;
2055 spin_unlock_irqrestore(&priv->lock, flags);
2056
2057 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
2058 if (beacon_int == 0) {
2059 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2060 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2061 } else {
2062 priv->rxon_timing.beacon_interval =
2063 cpu_to_le16(beacon_int);
2064 priv->rxon_timing.beacon_interval =
2065 iwl4965_adjust_beacon_interval(
2066 le16_to_cpu(priv->rxon_timing.beacon_interval));
2067 }
2068
2069 priv->rxon_timing.atim_window = 0;
2070 } else {
2071 priv->rxon_timing.beacon_interval =
2072 iwl4965_adjust_beacon_interval(conf->beacon_int);
2073 /* TODO: we need to get atim_window from upper stack
2074 * for now we set to 0 */
2075 priv->rxon_timing.atim_window = 0;
2076 }
2077
2078 interval_tm_unit =
2079 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2080 result = do_div(tsf, interval_tm_unit);
2081 priv->rxon_timing.beacon_init_val =
2082 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2083
2084 IWL_DEBUG_ASSOC
2085 ("beacon interval %d beacon timer %d beacon tim %d\n",
2086 le16_to_cpu(priv->rxon_timing.beacon_interval),
2087 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2088 le16_to_cpu(priv->rxon_timing.atim_window));
2089 }
2090
2091 static int iwl4965_scan_initiate(struct iwl_priv *priv)
2092 {
2093 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2094 IWL_ERROR("APs don't scan.\n");
2095 return 0;
2096 }
2097
2098 if (!iwl4965_is_ready_rf(priv)) {
2099 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2100 return -EIO;
2101 }
2102
2103 if (test_bit(STATUS_SCANNING, &priv->status)) {
2104 IWL_DEBUG_SCAN("Scan already in progress.\n");
2105 return -EAGAIN;
2106 }
2107
2108 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2109 IWL_DEBUG_SCAN("Scan request while abort pending. "
2110 "Queuing.\n");
2111 return -EAGAIN;
2112 }
2113
2114 IWL_DEBUG_INFO("Starting scan...\n");
2115 priv->scan_bands = 2;
2116 set_bit(STATUS_SCANNING, &priv->status);
2117 priv->scan_start = jiffies;
2118 priv->scan_pass_start = priv->scan_start;
2119
2120 queue_work(priv->workqueue, &priv->request_scan);
2121
2122 return 0;
2123 }
2124
2125 static int iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
2126 {
2127 struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
2128
2129 if (hw_decrypt)
2130 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2131 else
2132 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2133
2134 return 0;
2135 }
2136
2137 static void iwl4965_set_flags_for_phymode(struct iwl_priv *priv,
2138 enum ieee80211_band band)
2139 {
2140 if (band == IEEE80211_BAND_5GHZ) {
2141 priv->staging_rxon.flags &=
2142 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2143 | RXON_FLG_CCK_MSK);
2144 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2145 } else {
2146 /* Copied from iwl4965_bg_post_associate() */
2147 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2148 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2149 else
2150 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2151
2152 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2153 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2154
2155 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2156 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2157 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2158 }
2159 }
2160
2161 /*
2162 * initialize rxon structure with default values from eeprom
2163 */
2164 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
2165 {
2166 const struct iwl_channel_info *ch_info;
2167
2168 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2169
2170 switch (priv->iw_mode) {
2171 case IEEE80211_IF_TYPE_AP:
2172 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2173 break;
2174
2175 case IEEE80211_IF_TYPE_STA:
2176 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2177 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2178 break;
2179
2180 case IEEE80211_IF_TYPE_IBSS:
2181 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2182 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2183 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2184 RXON_FILTER_ACCEPT_GRP_MSK;
2185 break;
2186
2187 case IEEE80211_IF_TYPE_MNTR:
2188 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2189 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2190 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2191 break;
2192 }
2193
2194 #if 0
2195 /* TODO: Figure out when short_preamble would be set and cache from
2196 * that */
2197 if (!hw_to_local(priv->hw)->short_preamble)
2198 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2199 else
2200 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2201 #endif
2202
2203 ch_info = iwl4965_get_channel_info(priv, priv->band,
2204 le16_to_cpu(priv->staging_rxon.channel));
2205
2206 if (!ch_info)
2207 ch_info = &priv->channel_info[0];
2208
2209 /*
2210 * in some case A channels are all non IBSS
2211 * in this case force B/G channel
2212 */
2213 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2214 !(is_channel_ibss(ch_info)))
2215 ch_info = &priv->channel_info[0];
2216
2217 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2218 priv->band = ch_info->band;
2219
2220 iwl4965_set_flags_for_phymode(priv, priv->band);
2221
2222 priv->staging_rxon.ofdm_basic_rates =
2223 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2224 priv->staging_rxon.cck_basic_rates =
2225 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2226
2227 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
2228 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
2229 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2230 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
2231 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
2232 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
2233 iwl4965_set_rxon_chain(priv);
2234 }
2235
2236 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
2237 {
2238 if (mode == IEEE80211_IF_TYPE_IBSS) {
2239 const struct iwl_channel_info *ch_info;
2240
2241 ch_info = iwl4965_get_channel_info(priv,
2242 priv->band,
2243 le16_to_cpu(priv->staging_rxon.channel));
2244
2245 if (!ch_info || !is_channel_ibss(ch_info)) {
2246 IWL_ERROR("channel %d not IBSS channel\n",
2247 le16_to_cpu(priv->staging_rxon.channel));
2248 return -EINVAL;
2249 }
2250 }
2251
2252 priv->iw_mode = mode;
2253
2254 iwl4965_connection_init_rx_config(priv);
2255 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2256
2257 iwlcore_clear_stations_table(priv);
2258
2259 /* dont commit rxon if rf-kill is on*/
2260 if (!iwl4965_is_ready_rf(priv))
2261 return -EAGAIN;
2262
2263 cancel_delayed_work(&priv->scan_check);
2264 if (iwl4965_scan_cancel_timeout(priv, 100)) {
2265 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2266 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2267 return -EAGAIN;
2268 }
2269
2270 iwl4965_commit_rxon(priv);
2271
2272 return 0;
2273 }
2274
2275 static void iwl4965_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
2276 struct ieee80211_tx_control *ctl,
2277 struct iwl4965_cmd *cmd,
2278 struct sk_buff *skb_frag,
2279 int last_frag)
2280 {
2281 struct iwl4965_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo;
2282
2283 switch (keyinfo->alg) {
2284 case ALG_CCMP:
2285 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2286 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2287 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
2288 cmd->cmd.tx.tx_flags |= TX_CMD_FLG_AGG_CCMP_MSK;
2289 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2290 break;
2291
2292 case ALG_TKIP:
2293 #if 0
2294 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2295
2296 if (last_frag)
2297 memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2298 8);
2299 else
2300 memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2301 #endif
2302 break;
2303
2304 case ALG_WEP:
2305 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2306 (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2307
2308 if (keyinfo->keylen == 13)
2309 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2310
2311 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2312
2313 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2314 "with key %d\n", ctl->key_idx);
2315 break;
2316
2317 default:
2318 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2319 break;
2320 }
2321 }
2322
2323 /*
2324 * handle build REPLY_TX command notification.
2325 */
2326 static void iwl4965_build_tx_cmd_basic(struct iwl_priv *priv,
2327 struct iwl4965_cmd *cmd,
2328 struct ieee80211_tx_control *ctrl,
2329 struct ieee80211_hdr *hdr,
2330 int is_unicast, u8 std_id)
2331 {
2332 __le16 *qc;
2333 u16 fc = le16_to_cpu(hdr->frame_control);
2334 __le32 tx_flags = cmd->cmd.tx.tx_flags;
2335
2336 cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2337 if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2338 tx_flags |= TX_CMD_FLG_ACK_MSK;
2339 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2340 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2341 if (ieee80211_is_probe_response(fc) &&
2342 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2343 tx_flags |= TX_CMD_FLG_TSF_MSK;
2344 } else {
2345 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2346 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2347 }
2348
2349 if (ieee80211_is_back_request(fc))
2350 tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK;
2351
2352
2353 cmd->cmd.tx.sta_id = std_id;
2354 if (ieee80211_get_morefrag(hdr))
2355 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2356
2357 qc = ieee80211_get_qos_ctrl(hdr);
2358 if (qc) {
2359 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2360 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2361 } else
2362 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2363
2364 if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2365 tx_flags |= TX_CMD_FLG_RTS_MSK;
2366 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2367 } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2368 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2369 tx_flags |= TX_CMD_FLG_CTS_MSK;
2370 }
2371
2372 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2373 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2374
2375 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2376 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2377 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2378 (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2379 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2380 else
2381 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2382 } else
2383 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2384
2385 cmd->cmd.tx.driver_txop = 0;
2386 cmd->cmd.tx.tx_flags = tx_flags;
2387 cmd->cmd.tx.next_frame_len = 0;
2388 }
2389 static void iwl_update_tx_stats(struct iwl_priv *priv, u16 fc, u16 len)
2390 {
2391 /* 0 - mgmt, 1 - cnt, 2 - data */
2392 int idx = (fc & IEEE80211_FCTL_FTYPE) >> 2;
2393 priv->tx_stats[idx].cnt++;
2394 priv->tx_stats[idx].bytes += len;
2395 }
2396 /**
2397 * iwl4965_get_sta_id - Find station's index within station table
2398 *
2399 * If new IBSS station, create new entry in station table
2400 */
2401 static int iwl4965_get_sta_id(struct iwl_priv *priv,
2402 struct ieee80211_hdr *hdr)
2403 {
2404 int sta_id;
2405 u16 fc = le16_to_cpu(hdr->frame_control);
2406 DECLARE_MAC_BUF(mac);
2407
2408 /* If this frame is broadcast or management, use broadcast station id */
2409 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2410 is_multicast_ether_addr(hdr->addr1))
2411 return priv->hw_setting.bcast_sta_id;
2412
2413 switch (priv->iw_mode) {
2414
2415 /* If we are a client station in a BSS network, use the special
2416 * AP station entry (that's the only station we communicate with) */
2417 case IEEE80211_IF_TYPE_STA:
2418 return IWL_AP_ID;
2419
2420 /* If we are an AP, then find the station, or use BCAST */
2421 case IEEE80211_IF_TYPE_AP:
2422 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2423 if (sta_id != IWL_INVALID_STATION)
2424 return sta_id;
2425 return priv->hw_setting.bcast_sta_id;
2426
2427 /* If this frame is going out to an IBSS network, find the station,
2428 * or create a new station table entry */
2429 case IEEE80211_IF_TYPE_IBSS:
2430 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2431 if (sta_id != IWL_INVALID_STATION)
2432 return sta_id;
2433
2434 /* Create new station table entry */
2435 sta_id = iwl4965_add_station_flags(priv, hdr->addr1,
2436 0, CMD_ASYNC, NULL);
2437
2438 if (sta_id != IWL_INVALID_STATION)
2439 return sta_id;
2440
2441 IWL_DEBUG_DROP("Station %s not in station map. "
2442 "Defaulting to broadcast...\n",
2443 print_mac(mac, hdr->addr1));
2444 iwl_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2445 return priv->hw_setting.bcast_sta_id;
2446
2447 default:
2448 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
2449 return priv->hw_setting.bcast_sta_id;
2450 }
2451 }
2452
2453 /*
2454 * start REPLY_TX command process
2455 */
2456 static int iwl4965_tx_skb(struct iwl_priv *priv,
2457 struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2458 {
2459 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2460 struct iwl4965_tfd_frame *tfd;
2461 u32 *control_flags;
2462 int txq_id = ctl->queue;
2463 struct iwl4965_tx_queue *txq = NULL;
2464 struct iwl4965_queue *q = NULL;
2465 dma_addr_t phys_addr;
2466 dma_addr_t txcmd_phys;
2467 dma_addr_t scratch_phys;
2468 struct iwl4965_cmd *out_cmd = NULL;
2469 u16 len, idx, len_org;
2470 u8 id, hdr_len, unicast;
2471 u8 sta_id;
2472 u16 seq_number = 0;
2473 u16 fc;
2474 __le16 *qc;
2475 u8 wait_write_ptr = 0;
2476 unsigned long flags;
2477 int rc;
2478
2479 spin_lock_irqsave(&priv->lock, flags);
2480 if (iwl4965_is_rfkill(priv)) {
2481 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2482 goto drop_unlock;
2483 }
2484
2485 if (!priv->vif) {
2486 IWL_DEBUG_DROP("Dropping - !priv->vif\n");
2487 goto drop_unlock;
2488 }
2489
2490 if ((ctl->tx_rate->hw_value & 0xFF) == IWL_INVALID_RATE) {
2491 IWL_ERROR("ERROR: No TX rate available.\n");
2492 goto drop_unlock;
2493 }
2494
2495 unicast = !is_multicast_ether_addr(hdr->addr1);
2496 id = 0;
2497
2498 fc = le16_to_cpu(hdr->frame_control);
2499
2500 #ifdef CONFIG_IWLWIFI_DEBUG
2501 if (ieee80211_is_auth(fc))
2502 IWL_DEBUG_TX("Sending AUTH frame\n");
2503 else if (ieee80211_is_assoc_request(fc))
2504 IWL_DEBUG_TX("Sending ASSOC frame\n");
2505 else if (ieee80211_is_reassoc_request(fc))
2506 IWL_DEBUG_TX("Sending REASSOC frame\n");
2507 #endif
2508
2509 /* drop all data frame if we are not associated */
2510 if (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
2511 (!iwl4965_is_associated(priv) ||
2512 ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id) ||
2513 !priv->assoc_station_added)) {
2514 IWL_DEBUG_DROP("Dropping - !iwl4965_is_associated\n");
2515 goto drop_unlock;
2516 }
2517
2518 spin_unlock_irqrestore(&priv->lock, flags);
2519
2520 hdr_len = ieee80211_get_hdrlen(fc);
2521
2522 /* Find (or create) index into station table for destination station */
2523 sta_id = iwl4965_get_sta_id(priv, hdr);
2524 if (sta_id == IWL_INVALID_STATION) {
2525 DECLARE_MAC_BUF(mac);
2526
2527 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2528 print_mac(mac, hdr->addr1));
2529 goto drop;
2530 }
2531
2532 IWL_DEBUG_RATE("station Id %d\n", sta_id);
2533
2534 qc = ieee80211_get_qos_ctrl(hdr);
2535 if (qc) {
2536 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2537 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2538 IEEE80211_SCTL_SEQ;
2539 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2540 (hdr->seq_ctrl &
2541 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2542 seq_number += 0x10;
2543 #ifdef CONFIG_IWL4965_HT
2544 /* aggregation is on for this <sta,tid> */
2545 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
2546 txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
2547 priv->stations[sta_id].tid[tid].tfds_in_queue++;
2548 #endif /* CONFIG_IWL4965_HT */
2549 }
2550
2551 /* Descriptor for chosen Tx queue */
2552 txq = &priv->txq[txq_id];
2553 q = &txq->q;
2554
2555 spin_lock_irqsave(&priv->lock, flags);
2556
2557 /* Set up first empty TFD within this queue's circular TFD buffer */
2558 tfd = &txq->bd[q->write_ptr];
2559 memset(tfd, 0, sizeof(*tfd));
2560 control_flags = (u32 *) tfd;
2561 idx = get_cmd_index(q, q->write_ptr, 0);
2562
2563 /* Set up driver data for this TFD */
2564 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info));
2565 txq->txb[q->write_ptr].skb[0] = skb;
2566 memcpy(&(txq->txb[q->write_ptr].status.control),
2567 ctl, sizeof(struct ieee80211_tx_control));
2568
2569 /* Set up first empty entry in queue's array of Tx/cmd buffers */
2570 out_cmd = &txq->cmd[idx];
2571 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2572 memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2573
2574 /*
2575 * Set up the Tx-command (not MAC!) header.
2576 * Store the chosen Tx queue and TFD index within the sequence field;
2577 * after Tx, uCode's Tx response will return this value so driver can
2578 * locate the frame within the tx queue and do post-tx processing.
2579 */
2580 out_cmd->hdr.cmd = REPLY_TX;
2581 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2582 INDEX_TO_SEQ(q->write_ptr)));
2583
2584 /* Copy MAC header from skb into command buffer */
2585 memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2586
2587 /*
2588 * Use the first empty entry in this queue's command buffer array
2589 * to contain the Tx command and MAC header concatenated together
2590 * (payload data will be in another buffer).
2591 * Size of this varies, due to varying MAC header length.
2592 * If end is not dword aligned, we'll have 2 extra bytes at the end
2593 * of the MAC header (device reads on dword boundaries).
2594 * We'll tell device about this padding later.
2595 */
2596 len = priv->hw_setting.tx_cmd_len +
2597 sizeof(struct iwl4965_cmd_header) + hdr_len;
2598
2599 len_org = len;
2600 len = (len + 3) & ~3;
2601
2602 if (len_org != len)
2603 len_org = 1;
2604 else
2605 len_org = 0;
2606
2607 /* Physical address of this Tx command's header (not MAC header!),
2608 * within command buffer array. */
2609 txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl4965_cmd) * idx +
2610 offsetof(struct iwl4965_cmd, hdr);
2611
2612 /* Add buffer containing Tx command and MAC(!) header to TFD's
2613 * first entry */
2614 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2615
2616 if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
2617 iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
2618
2619 /* Set up TFD's 2nd entry to point directly to remainder of skb,
2620 * if any (802.11 null frames have no payload). */
2621 len = skb->len - hdr_len;
2622 if (len) {
2623 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2624 len, PCI_DMA_TODEVICE);
2625 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2626 }
2627
2628 /* Tell 4965 about any 2-byte padding after MAC header */
2629 if (len_org)
2630 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
2631
2632 /* Total # bytes to be transmitted */
2633 len = (u16)skb->len;
2634 out_cmd->cmd.tx.len = cpu_to_le16(len);
2635
2636 /* TODO need this for burst mode later on */
2637 iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
2638
2639 /* set is_hcca to 0; it probably will never be implemented */
2640 iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
2641
2642 iwl_update_tx_stats(priv, fc, len);
2643
2644 scratch_phys = txcmd_phys + sizeof(struct iwl4965_cmd_header) +
2645 offsetof(struct iwl4965_tx_cmd, scratch);
2646 out_cmd->cmd.tx.dram_lsb_ptr = cpu_to_le32(scratch_phys);
2647 out_cmd->cmd.tx.dram_msb_ptr = iwl_get_dma_hi_address(scratch_phys);
2648
2649 if (!ieee80211_get_morefrag(hdr)) {
2650 txq->need_update = 1;
2651 if (qc) {
2652 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2653 priv->stations[sta_id].tid[tid].seq_number = seq_number;
2654 }
2655 } else {
2656 wait_write_ptr = 1;
2657 txq->need_update = 0;
2658 }
2659
2660 iwl_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2661 sizeof(out_cmd->cmd.tx));
2662
2663 iwl_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2664 ieee80211_get_hdrlen(fc));
2665
2666 /* Set up entry for this TFD in Tx byte-count array */
2667 iwl4965_tx_queue_update_wr_ptr(priv, txq, len);
2668
2669 /* Tell device the write index *just past* this latest filled TFD */
2670 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
2671 rc = iwl4965_tx_queue_update_write_ptr(priv, txq);
2672 spin_unlock_irqrestore(&priv->lock, flags);
2673
2674 if (rc)
2675 return rc;
2676
2677 if ((iwl4965_queue_space(q) < q->high_mark)
2678 && priv->mac80211_registered) {
2679 if (wait_write_ptr) {
2680 spin_lock_irqsave(&priv->lock, flags);
2681 txq->need_update = 1;
2682 iwl4965_tx_queue_update_write_ptr(priv, txq);
2683 spin_unlock_irqrestore(&priv->lock, flags);
2684 }
2685
2686 ieee80211_stop_queue(priv->hw, ctl->queue);
2687 }
2688
2689 return 0;
2690
2691 drop_unlock:
2692 spin_unlock_irqrestore(&priv->lock, flags);
2693 drop:
2694 return -1;
2695 }
2696
2697 static void iwl4965_set_rate(struct iwl_priv *priv)
2698 {
2699 const struct ieee80211_supported_band *hw = NULL;
2700 struct ieee80211_rate *rate;
2701 int i;
2702
2703 hw = iwl4965_get_hw_mode(priv, priv->band);
2704 if (!hw) {
2705 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2706 return;
2707 }
2708
2709 priv->active_rate = 0;
2710 priv->active_rate_basic = 0;
2711
2712 for (i = 0; i < hw->n_bitrates; i++) {
2713 rate = &(hw->bitrates[i]);
2714 if (rate->hw_value < IWL_RATE_COUNT)
2715 priv->active_rate |= (1 << rate->hw_value);
2716 }
2717
2718 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2719 priv->active_rate, priv->active_rate_basic);
2720
2721 /*
2722 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2723 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2724 * OFDM
2725 */
2726 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2727 priv->staging_rxon.cck_basic_rates =
2728 ((priv->active_rate_basic &
2729 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2730 else
2731 priv->staging_rxon.cck_basic_rates =
2732 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2733
2734 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2735 priv->staging_rxon.ofdm_basic_rates =
2736 ((priv->active_rate_basic &
2737 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2738 IWL_FIRST_OFDM_RATE) & 0xFF;
2739 else
2740 priv->staging_rxon.ofdm_basic_rates =
2741 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2742 }
2743
2744 static void iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
2745 {
2746 unsigned long flags;
2747
2748 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2749 return;
2750
2751 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2752 disable_radio ? "OFF" : "ON");
2753
2754 if (disable_radio) {
2755 iwl4965_scan_cancel(priv);
2756 /* FIXME: This is a workaround for AP */
2757 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
2758 spin_lock_irqsave(&priv->lock, flags);
2759 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
2760 CSR_UCODE_SW_BIT_RFKILL);
2761 spin_unlock_irqrestore(&priv->lock, flags);
2762 iwl4965_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
2763 set_bit(STATUS_RF_KILL_SW, &priv->status);
2764 }
2765 return;
2766 }
2767
2768 spin_lock_irqsave(&priv->lock, flags);
2769 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2770
2771 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2772 spin_unlock_irqrestore(&priv->lock, flags);
2773
2774 /* wake up ucode */
2775 msleep(10);
2776
2777 spin_lock_irqsave(&priv->lock, flags);
2778 iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
2779 if (!iwl4965_grab_nic_access(priv))
2780 iwl4965_release_nic_access(priv);
2781 spin_unlock_irqrestore(&priv->lock, flags);
2782
2783 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2784 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2785 "disabled by HW switch\n");
2786 return;
2787 }
2788
2789 queue_work(priv->workqueue, &priv->restart);
2790 return;
2791 }
2792
2793 void iwl4965_set_decrypted_flag(struct iwl_priv *priv, struct sk_buff *skb,
2794 u32 decrypt_res, struct ieee80211_rx_status *stats)
2795 {
2796 u16 fc =
2797 le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
2798
2799 if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
2800 return;
2801
2802 if (!(fc & IEEE80211_FCTL_PROTECTED))
2803 return;
2804
2805 IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
2806 switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
2807 case RX_RES_STATUS_SEC_TYPE_TKIP:
2808 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2809 RX_RES_STATUS_BAD_ICV_MIC)
2810 stats->flag |= RX_FLAG_MMIC_ERROR;
2811 case RX_RES_STATUS_SEC_TYPE_WEP:
2812 case RX_RES_STATUS_SEC_TYPE_CCMP:
2813 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2814 RX_RES_STATUS_DECRYPT_OK) {
2815 IWL_DEBUG_RX("hw decrypt successfully!!!\n");
2816 stats->flag |= RX_FLAG_DECRYPTED;
2817 }
2818 break;
2819
2820 default:
2821 break;
2822 }
2823 }
2824
2825
2826 #define IWL_PACKET_RETRY_TIME HZ
2827
2828 int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
2829 {
2830 u16 sc = le16_to_cpu(header->seq_ctrl);
2831 u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
2832 u16 frag = sc & IEEE80211_SCTL_FRAG;
2833 u16 *last_seq, *last_frag;
2834 unsigned long *last_time;
2835
2836 switch (priv->iw_mode) {
2837 case IEEE80211_IF_TYPE_IBSS:{
2838 struct list_head *p;
2839 struct iwl4965_ibss_seq *entry = NULL;
2840 u8 *mac = header->addr2;
2841 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
2842
2843 __list_for_each(p, &priv->ibss_mac_hash[index]) {
2844 entry = list_entry(p, struct iwl4965_ibss_seq, list);
2845 if (!compare_ether_addr(entry->mac, mac))
2846 break;
2847 }
2848 if (p == &priv->ibss_mac_hash[index]) {
2849 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
2850 if (!entry) {
2851 IWL_ERROR("Cannot malloc new mac entry\n");
2852 return 0;
2853 }
2854 memcpy(entry->mac, mac, ETH_ALEN);
2855 entry->seq_num = seq;
2856 entry->frag_num = frag;
2857 entry->packet_time = jiffies;
2858 list_add(&entry->list, &priv->ibss_mac_hash[index]);
2859 return 0;
2860 }
2861 last_seq = &entry->seq_num;
2862 last_frag = &entry->frag_num;
2863 last_time = &entry->packet_time;
2864 break;
2865 }
2866 case IEEE80211_IF_TYPE_STA:
2867 last_seq = &priv->last_seq_num;
2868 last_frag = &priv->last_frag_num;
2869 last_time = &priv->last_packet_time;
2870 break;
2871 default:
2872 return 0;
2873 }
2874 if ((*last_seq == seq) &&
2875 time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
2876 if (*last_frag == frag)
2877 goto drop;
2878 if (*last_frag + 1 != frag)
2879 /* out-of-order fragment */
2880 goto drop;
2881 } else
2882 *last_seq = seq;
2883
2884 *last_frag = frag;
2885 *last_time = jiffies;
2886 return 0;
2887
2888 drop:
2889 return 1;
2890 }
2891
2892 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
2893
2894 #include "iwl-spectrum.h"
2895
2896 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
2897 #define BEACON_TIME_MASK_HIGH 0xFF000000
2898 #define TIME_UNIT 1024
2899
2900 /*
2901 * extended beacon time format
2902 * time in usec will be changed into a 32-bit value in 8:24 format
2903 * the high 1 byte is the beacon counts
2904 * the lower 3 bytes is the time in usec within one beacon interval
2905 */
2906
2907 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
2908 {
2909 u32 quot;
2910 u32 rem;
2911 u32 interval = beacon_interval * 1024;
2912
2913 if (!interval || !usec)
2914 return 0;
2915
2916 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
2917 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
2918
2919 return (quot << 24) + rem;
2920 }
2921
2922 /* base is usually what we get from ucode with each received frame,
2923 * the same as HW timer counter counting down
2924 */
2925
2926 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
2927 {
2928 u32 base_low = base & BEACON_TIME_MASK_LOW;
2929 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
2930 u32 interval = beacon_interval * TIME_UNIT;
2931 u32 res = (base & BEACON_TIME_MASK_HIGH) +
2932 (addon & BEACON_TIME_MASK_HIGH);
2933
2934 if (base_low > addon_low)
2935 res += base_low - addon_low;
2936 else if (base_low < addon_low) {
2937 res += interval + base_low - addon_low;
2938 res += (1 << 24);
2939 } else
2940 res += (1 << 24);
2941
2942 return cpu_to_le32(res);
2943 }
2944
2945 static int iwl4965_get_measurement(struct iwl_priv *priv,
2946 struct ieee80211_measurement_params *params,
2947 u8 type)
2948 {
2949 struct iwl4965_spectrum_cmd spectrum;
2950 struct iwl4965_rx_packet *res;
2951 struct iwl4965_host_cmd cmd = {
2952 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
2953 .data = (void *)&spectrum,
2954 .meta.flags = CMD_WANT_SKB,
2955 };
2956 u32 add_time = le64_to_cpu(params->start_time);
2957 int rc;
2958 int spectrum_resp_status;
2959 int duration = le16_to_cpu(params->duration);
2960
2961 if (iwl4965_is_associated(priv))
2962 add_time =
2963 iwl4965_usecs_to_beacons(
2964 le64_to_cpu(params->start_time) - priv->last_tsf,
2965 le16_to_cpu(priv->rxon_timing.beacon_interval));
2966
2967 memset(&spectrum, 0, sizeof(spectrum));
2968
2969 spectrum.channel_count = cpu_to_le16(1);
2970 spectrum.flags =
2971 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
2972 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
2973 cmd.len = sizeof(spectrum);
2974 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
2975
2976 if (iwl4965_is_associated(priv))
2977 spectrum.start_time =
2978 iwl4965_add_beacon_time(priv->last_beacon_time,
2979 add_time,
2980 le16_to_cpu(priv->rxon_timing.beacon_interval));
2981 else
2982 spectrum.start_time = 0;
2983
2984 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
2985 spectrum.channels[0].channel = params->channel;
2986 spectrum.channels[0].type = type;
2987 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
2988 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
2989 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
2990
2991 rc = iwl4965_send_cmd_sync(priv, &cmd);
2992 if (rc)
2993 return rc;
2994
2995 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
2996 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
2997 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
2998 rc = -EIO;
2999 }
3000
3001 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
3002 switch (spectrum_resp_status) {
3003 case 0: /* Command will be handled */
3004 if (res->u.spectrum.id != 0xff) {
3005 IWL_DEBUG_INFO
3006 ("Replaced existing measurement: %d\n",
3007 res->u.spectrum.id);
3008 priv->measurement_status &= ~MEASUREMENT_READY;
3009 }
3010 priv->measurement_status |= MEASUREMENT_ACTIVE;
3011 rc = 0;
3012 break;
3013
3014 case 1: /* Command will not be handled */
3015 rc = -EAGAIN;
3016 break;
3017 }
3018
3019 dev_kfree_skb_any(cmd.meta.u.skb);
3020
3021 return rc;
3022 }
3023 #endif
3024
3025 static void iwl4965_txstatus_to_ieee(struct iwl_priv *priv,
3026 struct iwl4965_tx_info *tx_sta)
3027 {
3028
3029 tx_sta->status.ack_signal = 0;
3030 tx_sta->status.excessive_retries = 0;
3031 tx_sta->status.queue_length = 0;
3032 tx_sta->status.queue_number = 0;
3033
3034 if (in_interrupt())
3035 ieee80211_tx_status_irqsafe(priv->hw,
3036 tx_sta->skb[0], &(tx_sta->status));
3037 else
3038 ieee80211_tx_status(priv->hw,
3039 tx_sta->skb[0], &(tx_sta->status));
3040
3041 tx_sta->skb[0] = NULL;
3042 }
3043
3044 /**
3045 * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
3046 *
3047 * When FW advances 'R' index, all entries between old and new 'R' index
3048 * need to be reclaimed. As result, some free space forms. If there is
3049 * enough free space (> low mark), wake the stack that feeds us.
3050 */
3051 int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
3052 {
3053 struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3054 struct iwl4965_queue *q = &txq->q;
3055 int nfreed = 0;
3056
3057 if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
3058 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3059 "is out of range [0-%d] %d %d.\n", txq_id,
3060 index, q->n_bd, q->write_ptr, q->read_ptr);
3061 return 0;
3062 }
3063
3064 for (index = iwl_queue_inc_wrap(index, q->n_bd);
3065 q->read_ptr != index;
3066 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3067 if (txq_id != IWL_CMD_QUEUE_NUM) {
3068 iwl4965_txstatus_to_ieee(priv,
3069 &(txq->txb[txq->q.read_ptr]));
3070 iwl4965_hw_txq_free_tfd(priv, txq);
3071 } else if (nfreed > 1) {
3072 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3073 q->write_ptr, q->read_ptr);
3074 queue_work(priv->workqueue, &priv->restart);
3075 }
3076 nfreed++;
3077 }
3078
3079 /* if (iwl4965_queue_space(q) > q->low_mark && (txq_id >= 0) &&
3080 (txq_id != IWL_CMD_QUEUE_NUM) &&
3081 priv->mac80211_registered)
3082 ieee80211_wake_queue(priv->hw, txq_id); */
3083
3084
3085 return nfreed;
3086 }
3087
3088 static int iwl4965_is_tx_success(u32 status)
3089 {
3090 status &= TX_STATUS_MSK;
3091 return (status == TX_STATUS_SUCCESS)
3092 || (status == TX_STATUS_DIRECT_DONE);
3093 }
3094
3095 /******************************************************************************
3096 *
3097 * Generic RX handler implementations
3098 *
3099 ******************************************************************************/
3100 #ifdef CONFIG_IWL4965_HT
3101
3102 static inline int iwl4965_get_ra_sta_id(struct iwl_priv *priv,
3103 struct ieee80211_hdr *hdr)
3104 {
3105 if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
3106 return IWL_AP_ID;
3107 else {
3108 u8 *da = ieee80211_get_DA(hdr);
3109 return iwl4965_hw_find_station(priv, da);
3110 }
3111 }
3112
3113 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
3114 struct iwl_priv *priv, int txq_id, int idx)
3115 {
3116 if (priv->txq[txq_id].txb[idx].skb[0])
3117 return (struct ieee80211_hdr *)priv->txq[txq_id].
3118 txb[idx].skb[0]->data;
3119 return NULL;
3120 }
3121
3122 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
3123 {
3124 __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
3125 tx_resp->frame_count);
3126 return le32_to_cpu(*scd_ssn) & MAX_SN;
3127
3128 }
3129
3130 /**
3131 * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
3132 */
3133 static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
3134 struct iwl4965_ht_agg *agg,
3135 struct iwl4965_tx_resp_agg *tx_resp,
3136 u16 start_idx)
3137 {
3138 u16 status;
3139 struct agg_tx_status *frame_status = &tx_resp->status;
3140 struct ieee80211_tx_status *tx_status = NULL;
3141 struct ieee80211_hdr *hdr = NULL;
3142 int i, sh;
3143 int txq_id, idx;
3144 u16 seq;
3145
3146 if (agg->wait_for_ba)
3147 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
3148
3149 agg->frame_count = tx_resp->frame_count;
3150 agg->start_idx = start_idx;
3151 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3152 agg->bitmap = 0;
3153
3154 /* # frames attempted by Tx command */
3155 if (agg->frame_count == 1) {
3156 /* Only one frame was attempted; no block-ack will arrive */
3157 status = le16_to_cpu(frame_status[0].status);
3158 seq = le16_to_cpu(frame_status[0].sequence);
3159 idx = SEQ_TO_INDEX(seq);
3160 txq_id = SEQ_TO_QUEUE(seq);
3161
3162 /* FIXME: code repetition */
3163 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
3164 agg->frame_count, agg->start_idx, idx);
3165
3166 tx_status = &(priv->txq[txq_id].txb[idx].status);
3167 tx_status->retry_count = tx_resp->failure_frame;
3168 tx_status->queue_number = status & 0xff;
3169 tx_status->queue_length = tx_resp->failure_rts;
3170 tx_status->control.flags &= ~IEEE80211_TXCTL_AMPDU;
3171 tx_status->flags = iwl4965_is_tx_success(status)?
3172 IEEE80211_TX_STATUS_ACK : 0;
3173 iwl4965_hwrate_to_tx_control(priv,
3174 le32_to_cpu(tx_resp->rate_n_flags),
3175 &tx_status->control);
3176 /* FIXME: code repetition end */
3177
3178 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
3179 status & 0xff, tx_resp->failure_frame);
3180 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
3181 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
3182
3183 agg->wait_for_ba = 0;
3184 } else {
3185 /* Two or more frames were attempted; expect block-ack */
3186 u64 bitmap = 0;
3187 int start = agg->start_idx;
3188
3189 /* Construct bit-map of pending frames within Tx window */
3190 for (i = 0; i < agg->frame_count; i++) {
3191 u16 sc;
3192 status = le16_to_cpu(frame_status[i].status);
3193 seq = le16_to_cpu(frame_status[i].sequence);
3194 idx = SEQ_TO_INDEX(seq);
3195 txq_id = SEQ_TO_QUEUE(seq);
3196
3197 if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
3198 AGG_TX_STATE_ABORT_MSK))
3199 continue;
3200
3201 IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
3202 agg->frame_count, txq_id, idx);
3203
3204 hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
3205
3206 sc = le16_to_cpu(hdr->seq_ctrl);
3207 if (idx != (SEQ_TO_SN(sc) & 0xff)) {
3208 IWL_ERROR("BUG_ON idx doesn't match seq control"
3209 " idx=%d, seq_idx=%d, seq=%d\n",
3210 idx, SEQ_TO_SN(sc),
3211 hdr->seq_ctrl);
3212 return -1;
3213 }
3214
3215 IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
3216 i, idx, SEQ_TO_SN(sc));
3217
3218 sh = idx - start;
3219 if (sh > 64) {
3220 sh = (start - idx) + 0xff;
3221 bitmap = bitmap << sh;
3222 sh = 0;
3223 start = idx;
3224 } else if (sh < -64)
3225 sh = 0xff - (start - idx);
3226 else if (sh < 0) {
3227 sh = start - idx;
3228 start = idx;
3229 bitmap = bitmap << sh;
3230 sh = 0;
3231 }
3232 bitmap |= (1 << sh);
3233 IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
3234 start, (u32)(bitmap & 0xFFFFFFFF));
3235 }
3236
3237 agg->bitmap = bitmap;
3238 agg->start_idx = start;
3239 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3240 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
3241 agg->frame_count, agg->start_idx,
3242 agg->bitmap);
3243
3244 if (bitmap)
3245 agg->wait_for_ba = 1;
3246 }
3247 return 0;
3248 }
3249 #endif
3250
3251 /**
3252 * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
3253 */
3254 static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
3255 struct iwl4965_rx_mem_buffer *rxb)
3256 {
3257 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3258 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3259 int txq_id = SEQ_TO_QUEUE(sequence);
3260 int index = SEQ_TO_INDEX(sequence);
3261 struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3262 struct ieee80211_tx_status *tx_status;
3263 struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3264 u32 status = le32_to_cpu(tx_resp->status);
3265 #ifdef CONFIG_IWL4965_HT
3266 int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
3267 struct ieee80211_hdr *hdr;
3268 __le16 *qc;
3269 #endif
3270
3271 if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3272 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3273 "is out of range [0-%d] %d %d\n", txq_id,
3274 index, txq->q.n_bd, txq->q.write_ptr,
3275 txq->q.read_ptr);
3276 return;
3277 }
3278
3279 #ifdef CONFIG_IWL4965_HT
3280 hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
3281 qc = ieee80211_get_qos_ctrl(hdr);
3282
3283 if (qc)
3284 tid = le16_to_cpu(*qc) & 0xf;
3285
3286 sta_id = iwl4965_get_ra_sta_id(priv, hdr);
3287 if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
3288 IWL_ERROR("Station not known\n");
3289 return;
3290 }
3291
3292 if (txq->sched_retry) {
3293 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
3294 struct iwl4965_ht_agg *agg = NULL;
3295
3296 if (!qc)
3297 return;
3298
3299 agg = &priv->stations[sta_id].tid[tid].agg;
3300
3301 iwl4965_tx_status_reply_tx(priv, agg,
3302 (struct iwl4965_tx_resp_agg *)tx_resp, index);
3303
3304 if ((tx_resp->frame_count == 1) &&
3305 !iwl4965_is_tx_success(status)) {
3306 /* TODO: send BAR */
3307 }
3308
3309 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
3310 int freed;
3311 index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
3312 IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
3313 "%d index %d\n", scd_ssn , index);
3314 freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3315 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3316
3317 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3318 txq_id >= 0 && priv->mac80211_registered &&
3319 agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)
3320 ieee80211_wake_queue(priv->hw, txq_id);
3321
3322 iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3323 }
3324 } else {
3325 #endif /* CONFIG_IWL4965_HT */
3326 tx_status = &(txq->txb[txq->q.read_ptr].status);
3327
3328 tx_status->retry_count = tx_resp->failure_frame;
3329 tx_status->queue_number = status;
3330 tx_status->queue_length = tx_resp->bt_kill_count;
3331 tx_status->queue_length |= tx_resp->failure_rts;
3332 tx_status->flags =
3333 iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3334 iwl4965_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags),
3335 &tx_status->control);
3336
3337 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3338 "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
3339 status, le32_to_cpu(tx_resp->rate_n_flags),
3340 tx_resp->failure_frame);
3341
3342 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3343 if (index != -1) {
3344 int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3345 #ifdef CONFIG_IWL4965_HT
3346 if (tid != MAX_TID_COUNT)
3347 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3348 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3349 (txq_id >= 0) &&
3350 priv->mac80211_registered)
3351 ieee80211_wake_queue(priv->hw, txq_id);
3352 if (tid != MAX_TID_COUNT)
3353 iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3354 #endif
3355 }
3356 #ifdef CONFIG_IWL4965_HT
3357 }
3358 #endif /* CONFIG_IWL4965_HT */
3359
3360 if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3361 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
3362 }
3363
3364
3365 static void iwl4965_rx_reply_alive(struct iwl_priv *priv,
3366 struct iwl4965_rx_mem_buffer *rxb)
3367 {
3368 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3369 struct iwl4965_alive_resp *palive;
3370 struct delayed_work *pwork;
3371
3372 palive = &pkt->u.alive_frame;
3373
3374 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3375 "0x%01X 0x%01X\n",
3376 palive->is_valid, palive->ver_type,
3377 palive->ver_subtype);
3378
3379 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3380 IWL_DEBUG_INFO("Initialization Alive received.\n");
3381 memcpy(&priv->card_alive_init,
3382 &pkt->u.alive_frame,
3383 sizeof(struct iwl4965_init_alive_resp));
3384 pwork = &priv->init_alive_start;
3385 } else {
3386 IWL_DEBUG_INFO("Runtime Alive received.\n");
3387 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3388 sizeof(struct iwl4965_alive_resp));
3389 pwork = &priv->alive_start;
3390 }
3391
3392 /* We delay the ALIVE response by 5ms to
3393 * give the HW RF Kill time to activate... */
3394 if (palive->is_valid == UCODE_VALID_OK)
3395 queue_delayed_work(priv->workqueue, pwork,
3396 msecs_to_jiffies(5));
3397 else
3398 IWL_WARNING("uCode did not respond OK.\n");
3399 }
3400
3401 static void iwl4965_rx_reply_add_sta(struct iwl_priv *priv,
3402 struct iwl4965_rx_mem_buffer *rxb)
3403 {
3404 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3405
3406 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3407 return;
3408 }
3409
3410 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
3411 struct iwl4965_rx_mem_buffer *rxb)
3412 {
3413 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3414
3415 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3416 "seq 0x%04X ser 0x%08X\n",
3417 le32_to_cpu(pkt->u.err_resp.error_type),
3418 get_cmd_string(pkt->u.err_resp.cmd_id),
3419 pkt->u.err_resp.cmd_id,
3420 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3421 le32_to_cpu(pkt->u.err_resp.error_info));
3422 }
3423
3424 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3425
3426 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl4965_rx_mem_buffer *rxb)
3427 {
3428 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3429 struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon;
3430 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
3431 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3432 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3433 rxon->channel = csa->channel;
3434 priv->staging_rxon.channel = csa->channel;
3435 }
3436
3437 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
3438 struct iwl4965_rx_mem_buffer *rxb)
3439 {
3440 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3441 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3442 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
3443
3444 if (!report->state) {
3445 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3446 "Spectrum Measure Notification: Start\n");
3447 return;
3448 }
3449
3450 memcpy(&priv->measure_report, report, sizeof(*report));
3451 priv->measurement_status |= MEASUREMENT_READY;
3452 #endif
3453 }
3454
3455 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
3456 struct iwl4965_rx_mem_buffer *rxb)
3457 {
3458 #ifdef CONFIG_IWLWIFI_DEBUG
3459 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3460 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
3461 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3462 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3463 #endif
3464 }
3465
3466 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
3467 struct iwl4965_rx_mem_buffer *rxb)
3468 {
3469 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3470 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3471 "notification for %s:\n",
3472 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3473 iwl_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3474 }
3475
3476 static void iwl4965_bg_beacon_update(struct work_struct *work)
3477 {
3478 struct iwl_priv *priv =
3479 container_of(work, struct iwl_priv, beacon_update);
3480 struct sk_buff *beacon;
3481
3482 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3483 beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL);
3484
3485 if (!beacon) {
3486 IWL_ERROR("update beacon failed\n");
3487 return;
3488 }
3489
3490 mutex_lock(&priv->mutex);
3491 /* new beacon skb is allocated every time; dispose previous.*/
3492 if (priv->ibss_beacon)
3493 dev_kfree_skb(priv->ibss_beacon);
3494
3495 priv->ibss_beacon = beacon;
3496 mutex_unlock(&priv->mutex);
3497
3498 iwl4965_send_beacon_cmd(priv);
3499 }
3500
3501 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
3502 struct iwl4965_rx_mem_buffer *rxb)
3503 {
3504 #ifdef CONFIG_IWLWIFI_DEBUG
3505 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3506 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
3507 u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
3508
3509 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3510 "tsf %d %d rate %d\n",
3511 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3512 beacon->beacon_notify_hdr.failure_frame,
3513 le32_to_cpu(beacon->ibss_mgr_status),
3514 le32_to_cpu(beacon->high_tsf),
3515 le32_to_cpu(beacon->low_tsf), rate);
3516 #endif
3517
3518 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3519 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3520 queue_work(priv->workqueue, &priv->beacon_update);
3521 }
3522
3523 /* Service response to REPLY_SCAN_CMD (0x80) */
3524 static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
3525 struct iwl4965_rx_mem_buffer *rxb)
3526 {
3527 #ifdef CONFIG_IWLWIFI_DEBUG
3528 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3529 struct iwl4965_scanreq_notification *notif =
3530 (struct iwl4965_scanreq_notification *)pkt->u.raw;
3531
3532 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3533 #endif
3534 }
3535
3536 /* Service SCAN_START_NOTIFICATION (0x82) */
3537 static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
3538 struct iwl4965_rx_mem_buffer *rxb)
3539 {
3540 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3541 struct iwl4965_scanstart_notification *notif =
3542 (struct iwl4965_scanstart_notification *)pkt->u.raw;
3543 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3544 IWL_DEBUG_SCAN("Scan start: "
3545 "%d [802.11%s] "
3546 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3547 notif->channel,
3548 notif->band ? "bg" : "a",
3549 notif->tsf_high,
3550 notif->tsf_low, notif->status, notif->beacon_timer);
3551 }
3552
3553 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3554 static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
3555 struct iwl4965_rx_mem_buffer *rxb)
3556 {
3557 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3558 struct iwl4965_scanresults_notification *notif =
3559 (struct iwl4965_scanresults_notification *)pkt->u.raw;
3560
3561 IWL_DEBUG_SCAN("Scan ch.res: "
3562 "%d [802.11%s] "
3563 "(TSF: 0x%08X:%08X) - %d "
3564 "elapsed=%lu usec (%dms since last)\n",
3565 notif->channel,
3566 notif->band ? "bg" : "a",
3567 le32_to_cpu(notif->tsf_high),
3568 le32_to_cpu(notif->tsf_low),
3569 le32_to_cpu(notif->statistics[0]),
3570 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3571 jiffies_to_msecs(elapsed_jiffies
3572 (priv->last_scan_jiffies, jiffies)));
3573
3574 priv->last_scan_jiffies = jiffies;
3575 priv->next_scan_jiffies = 0;
3576 }
3577
3578 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3579 static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
3580 struct iwl4965_rx_mem_buffer *rxb)
3581 {
3582 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3583 struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3584
3585 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3586 scan_notif->scanned_channels,
3587 scan_notif->tsf_low,
3588 scan_notif->tsf_high, scan_notif->status);
3589
3590 /* The HW is no longer scanning */
3591 clear_bit(STATUS_SCAN_HW, &priv->status);
3592
3593 /* The scan completion notification came in, so kill that timer... */
3594 cancel_delayed_work(&priv->scan_check);
3595
3596 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3597 (priv->scan_bands == 2) ? "2.4" : "5.2",
3598 jiffies_to_msecs(elapsed_jiffies
3599 (priv->scan_pass_start, jiffies)));
3600
3601 /* Remove this scanned band from the list
3602 * of pending bands to scan */
3603 priv->scan_bands--;
3604
3605 /* If a request to abort was given, or the scan did not succeed
3606 * then we reset the scan state machine and terminate,
3607 * re-queuing another scan if one has been requested */
3608 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3609 IWL_DEBUG_INFO("Aborted scan completed.\n");
3610 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3611 } else {
3612 /* If there are more bands on this scan pass reschedule */
3613 if (priv->scan_bands > 0)
3614 goto reschedule;
3615 }
3616
3617 priv->last_scan_jiffies = jiffies;
3618 priv->next_scan_jiffies = 0;
3619 IWL_DEBUG_INFO("Setting scan to off\n");
3620
3621 clear_bit(STATUS_SCANNING, &priv->status);
3622
3623 IWL_DEBUG_INFO("Scan took %dms\n",
3624 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3625
3626 queue_work(priv->workqueue, &priv->scan_completed);
3627
3628 return;
3629
3630 reschedule:
3631 priv->scan_pass_start = jiffies;
3632 queue_work(priv->workqueue, &priv->request_scan);
3633 }
3634
3635 /* Handle notification from uCode that card's power state is changing
3636 * due to software, hardware, or critical temperature RFKILL */
3637 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
3638 struct iwl4965_rx_mem_buffer *rxb)
3639 {
3640 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3641 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3642 unsigned long status = priv->status;
3643
3644 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3645 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3646 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3647
3648 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
3649 RF_CARD_DISABLED)) {
3650
3651 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
3652 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3653
3654 if (!iwl4965_grab_nic_access(priv)) {
3655 iwl4965_write_direct32(
3656 priv, HBUS_TARG_MBX_C,
3657 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3658
3659 iwl4965_release_nic_access(priv);
3660 }
3661
3662 if (!(flags & RXON_CARD_DISABLED)) {
3663 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3664 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3665 if (!iwl4965_grab_nic_access(priv)) {
3666 iwl4965_write_direct32(
3667 priv, HBUS_TARG_MBX_C,
3668 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3669
3670 iwl4965_release_nic_access(priv);
3671 }
3672 }
3673
3674 if (flags & RF_CARD_DISABLED) {
3675 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
3676 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
3677 iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
3678 if (!iwl4965_grab_nic_access(priv))
3679 iwl4965_release_nic_access(priv);
3680 }
3681 }
3682
3683 if (flags & HW_CARD_DISABLED)
3684 set_bit(STATUS_RF_KILL_HW, &priv->status);
3685 else
3686 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3687
3688
3689 if (flags & SW_CARD_DISABLED)
3690 set_bit(STATUS_RF_KILL_SW, &priv->status);
3691 else
3692 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3693
3694 if (!(flags & RXON_CARD_DISABLED))
3695 iwl4965_scan_cancel(priv);
3696
3697 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3698 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3699 (test_bit(STATUS_RF_KILL_SW, &status) !=
3700 test_bit(STATUS_RF_KILL_SW, &priv->status)))
3701 queue_work(priv->workqueue, &priv->rf_kill);
3702 else
3703 wake_up_interruptible(&priv->wait_command_queue);
3704 }
3705
3706 /**
3707 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
3708 *
3709 * Setup the RX handlers for each of the reply types sent from the uCode
3710 * to the host.
3711 *
3712 * This function chains into the hardware specific files for them to setup
3713 * any hardware specific handlers as well.
3714 */
3715 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
3716 {
3717 priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
3718 priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
3719 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
3720 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
3721 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3722 iwl4965_rx_spectrum_measure_notif;
3723 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
3724 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3725 iwl4965_rx_pm_debug_statistics_notif;
3726 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
3727
3728 /*
3729 * The same handler is used for both the REPLY to a discrete
3730 * statistics request from the host as well as for the periodic
3731 * statistics notifications (after received beacons) from the uCode.
3732 */
3733 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
3734 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
3735
3736 priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
3737 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
3738 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3739 iwl4965_rx_scan_results_notif;
3740 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3741 iwl4965_rx_scan_complete_notif;
3742 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
3743 priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
3744
3745 /* Set up hardware specific Rx handlers */
3746 iwl4965_hw_rx_handler_setup(priv);
3747 }
3748
3749 /**
3750 * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3751 * @rxb: Rx buffer to reclaim
3752 *
3753 * If an Rx buffer has an async callback associated with it the callback
3754 * will be executed. The attached skb (if present) will only be freed
3755 * if the callback returns 1
3756 */
3757 static void iwl4965_tx_cmd_complete(struct iwl_priv *priv,
3758 struct iwl4965_rx_mem_buffer *rxb)
3759 {
3760 struct iwl4965_rx_packet *pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
3761 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3762 int txq_id = SEQ_TO_QUEUE(sequence);
3763 int index = SEQ_TO_INDEX(sequence);
3764 int huge = sequence & SEQ_HUGE_FRAME;
3765 int cmd_index;
3766 struct iwl4965_cmd *cmd;
3767
3768 /* If a Tx command is being handled and it isn't in the actual
3769 * command queue then there a command routing bug has been introduced
3770 * in the queue management code. */
3771 if (txq_id != IWL_CMD_QUEUE_NUM)
3772 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
3773 txq_id, pkt->hdr.cmd);
3774 BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3775
3776 cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
3777 cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3778
3779 /* Input error checking is done when commands are added to queue. */
3780 if (cmd->meta.flags & CMD_WANT_SKB) {
3781 cmd->meta.source->u.skb = rxb->skb;
3782 rxb->skb = NULL;
3783 } else if (cmd->meta.u.callback &&
3784 !cmd->meta.u.callback(priv, cmd, rxb->skb))
3785 rxb->skb = NULL;
3786
3787 iwl4965_tx_queue_reclaim(priv, txq_id, index);
3788
3789 if (!(cmd->meta.flags & CMD_ASYNC)) {
3790 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3791 wake_up_interruptible(&priv->wait_command_queue);
3792 }
3793 }
3794
3795 /************************** RX-FUNCTIONS ****************************/
3796 /*
3797 * Rx theory of operation
3798 *
3799 * Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs),
3800 * each of which point to Receive Buffers to be filled by 4965. These get
3801 * used not only for Rx frames, but for any command response or notification
3802 * from the 4965. The driver and 4965 manage the Rx buffers by means
3803 * of indexes into the circular buffer.
3804 *
3805 * Rx Queue Indexes
3806 * The host/firmware share two index registers for managing the Rx buffers.
3807 *
3808 * The READ index maps to the first position that the firmware may be writing
3809 * to -- the driver can read up to (but not including) this position and get
3810 * good data.
3811 * The READ index is managed by the firmware once the card is enabled.
3812 *
3813 * The WRITE index maps to the last position the driver has read from -- the
3814 * position preceding WRITE is the last slot the firmware can place a packet.
3815 *
3816 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3817 * WRITE = READ.
3818 *
3819 * During initialization, the host sets up the READ queue position to the first
3820 * INDEX position, and WRITE to the last (READ - 1 wrapped)
3821 *
3822 * When the firmware places a packet in a buffer, it will advance the READ index
3823 * and fire the RX interrupt. The driver can then query the READ index and
3824 * process as many packets as possible, moving the WRITE index forward as it
3825 * resets the Rx queue buffers with new memory.
3826 *
3827 * The management in the driver is as follows:
3828 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
3829 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
3830 * to replenish the iwl->rxq->rx_free.
3831 * + In iwl4965_rx_replenish (scheduled) if 'processed' != 'read' then the
3832 * iwl->rxq is replenished and the READ INDEX is updated (updating the
3833 * 'processed' and 'read' driver indexes as well)
3834 * + A received packet is processed and handed to the kernel network stack,
3835 * detached from the iwl->rxq. The driver 'processed' index is updated.
3836 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3837 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3838 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
3839 * were enough free buffers and RX_STALLED is set it is cleared.
3840 *
3841 *
3842 * Driver sequence:
3843 *
3844 * iwl4965_rx_queue_alloc() Allocates rx_free
3845 * iwl4965_rx_replenish() Replenishes rx_free list from rx_used, and calls
3846 * iwl4965_rx_queue_restock
3847 * iwl4965_rx_queue_restock() Moves available buffers from rx_free into Rx
3848 * queue, updates firmware pointers, and updates
3849 * the WRITE index. If insufficient rx_free buffers
3850 * are available, schedules iwl4965_rx_replenish
3851 *
3852 * -- enable interrupts --
3853 * ISR - iwl4965_rx() Detach iwl4965_rx_mem_buffers from pool up to the
3854 * READ INDEX, detaching the SKB from the pool.
3855 * Moves the packet buffer from queue to rx_used.
3856 * Calls iwl4965_rx_queue_restock to refill any empty
3857 * slots.
3858 * ...
3859 *
3860 */
3861
3862 /**
3863 * iwl4965_rx_queue_space - Return number of free slots available in queue.
3864 */
3865 static int iwl4965_rx_queue_space(const struct iwl4965_rx_queue *q)
3866 {
3867 int s = q->read - q->write;
3868 if (s <= 0)
3869 s += RX_QUEUE_SIZE;
3870 /* keep some buffer to not confuse full and empty queue */
3871 s -= 2;
3872 if (s < 0)
3873 s = 0;
3874 return s;
3875 }
3876
3877 /**
3878 * iwl4965_rx_queue_update_write_ptr - Update the write pointer for the RX queue
3879 */
3880 int iwl4965_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl4965_rx_queue *q)
3881 {
3882 u32 reg = 0;
3883 int rc = 0;
3884 unsigned long flags;
3885
3886 spin_lock_irqsave(&q->lock, flags);
3887
3888 if (q->need_update == 0)
3889 goto exit_unlock;
3890
3891 /* If power-saving is in use, make sure device is awake */
3892 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3893 reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
3894
3895 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3896 iwl4965_set_bit(priv, CSR_GP_CNTRL,
3897 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3898 goto exit_unlock;
3899 }
3900
3901 rc = iwl4965_grab_nic_access(priv);
3902 if (rc)
3903 goto exit_unlock;
3904
3905 /* Device expects a multiple of 8 */
3906 iwl4965_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
3907 q->write & ~0x7);
3908 iwl4965_release_nic_access(priv);
3909
3910 /* Else device is assumed to be awake */
3911 } else
3912 /* Device expects a multiple of 8 */
3913 iwl4965_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
3914
3915
3916 q->need_update = 0;
3917
3918 exit_unlock:
3919 spin_unlock_irqrestore(&q->lock, flags);
3920 return rc;
3921 }
3922
3923 /**
3924 * iwl4965_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
3925 */
3926 static inline __le32 iwl4965_dma_addr2rbd_ptr(struct iwl_priv *priv,
3927 dma_addr_t dma_addr)
3928 {
3929 return cpu_to_le32((u32)(dma_addr >> 8));
3930 }
3931
3932
3933 /**
3934 * iwl4965_rx_queue_restock - refill RX queue from pre-allocated pool
3935 *
3936 * If there are slots in the RX queue that need to be restocked,
3937 * and we have free pre-allocated buffers, fill the ranks as much
3938 * as we can, pulling from rx_free.
3939 *
3940 * This moves the 'write' index forward to catch up with 'processed', and
3941 * also updates the memory address in the firmware to reference the new
3942 * target buffer.
3943 */
3944 static int iwl4965_rx_queue_restock(struct iwl_priv *priv)
3945 {
3946 struct iwl4965_rx_queue *rxq = &priv->rxq;
3947 struct list_head *element;
3948 struct iwl4965_rx_mem_buffer *rxb;
3949 unsigned long flags;
3950 int write, rc;
3951
3952 spin_lock_irqsave(&rxq->lock, flags);
3953 write = rxq->write & ~0x7;
3954 while ((iwl4965_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
3955 /* Get next free Rx buffer, remove from free list */
3956 element = rxq->rx_free.next;
3957 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
3958 list_del(element);
3959
3960 /* Point to Rx buffer via next RBD in circular buffer */
3961 rxq->bd[rxq->write] = iwl4965_dma_addr2rbd_ptr(priv, rxb->dma_addr);
3962 rxq->queue[rxq->write] = rxb;
3963 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
3964 rxq->free_count--;
3965 }
3966 spin_unlock_irqrestore(&rxq->lock, flags);
3967 /* If the pre-allocated buffer pool is dropping low, schedule to
3968 * refill it */
3969 if (rxq->free_count <= RX_LOW_WATERMARK)
3970 queue_work(priv->workqueue, &priv->rx_replenish);
3971
3972
3973 /* If we've added more space for the firmware to place data, tell it.
3974 * Increment device's write pointer in multiples of 8. */
3975 if ((write != (rxq->write & ~0x7))
3976 || (abs(rxq->write - rxq->read) > 7)) {
3977 spin_lock_irqsave(&rxq->lock, flags);
3978 rxq->need_update = 1;
3979 spin_unlock_irqrestore(&rxq->lock, flags);
3980 rc = iwl4965_rx_queue_update_write_ptr(priv, rxq);
3981 if (rc)
3982 return rc;
3983 }
3984
3985 return 0;
3986 }
3987
3988 /**
3989 * iwl4965_rx_replenish - Move all used packet from rx_used to rx_free
3990 *
3991 * When moving to rx_free an SKB is allocated for the slot.
3992 *
3993 * Also restock the Rx queue via iwl4965_rx_queue_restock.
3994 * This is called as a scheduled work item (except for during initialization)
3995 */
3996 static void iwl4965_rx_allocate(struct iwl_priv *priv)
3997 {
3998 struct iwl4965_rx_queue *rxq = &priv->rxq;
3999 struct list_head *element;
4000 struct iwl4965_rx_mem_buffer *rxb;
4001 unsigned long flags;
4002 spin_lock_irqsave(&rxq->lock, flags);
4003 while (!list_empty(&rxq->rx_used)) {
4004 element = rxq->rx_used.next;
4005 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
4006
4007 /* Alloc a new receive buffer */
4008 rxb->skb =
4009 alloc_skb(priv->hw_setting.rx_buf_size,
4010 __GFP_NOWARN | GFP_ATOMIC);
4011 if (!rxb->skb) {
4012 if (net_ratelimit())
4013 printk(KERN_CRIT DRV_NAME
4014 ": Can not allocate SKB buffers\n");
4015 /* We don't reschedule replenish work here -- we will
4016 * call the restock method and if it still needs
4017 * more buffers it will schedule replenish */
4018 break;
4019 }
4020 priv->alloc_rxb_skb++;
4021 list_del(element);
4022
4023 /* Get physical address of RB/SKB */
4024 rxb->dma_addr =
4025 pci_map_single(priv->pci_dev, rxb->skb->data,
4026 priv->hw_setting.rx_buf_size, PCI_DMA_FROMDEVICE);
4027 list_add_tail(&rxb->list, &rxq->rx_free);
4028 rxq->free_count++;
4029 }
4030 spin_unlock_irqrestore(&rxq->lock, flags);
4031 }
4032
4033 /*
4034 * this should be called while priv->lock is locked
4035 */
4036 static void __iwl4965_rx_replenish(void *data)
4037 {
4038 struct iwl_priv *priv = data;
4039
4040 iwl4965_rx_allocate(priv);
4041 iwl4965_rx_queue_restock(priv);
4042 }
4043
4044
4045 void iwl4965_rx_replenish(void *data)
4046 {
4047 struct iwl_priv *priv = data;
4048 unsigned long flags;
4049
4050 iwl4965_rx_allocate(priv);
4051
4052 spin_lock_irqsave(&priv->lock, flags);
4053 iwl4965_rx_queue_restock(priv);
4054 spin_unlock_irqrestore(&priv->lock, flags);
4055 }
4056
4057 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
4058 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
4059 * This free routine walks the list of POOL entries and if SKB is set to
4060 * non NULL it is unmapped and freed
4061 */
4062 static void iwl4965_rx_queue_free(struct iwl_priv *priv, struct iwl4965_rx_queue *rxq)
4063 {
4064 int i;
4065 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
4066 if (rxq->pool[i].skb != NULL) {
4067 pci_unmap_single(priv->pci_dev,
4068 rxq->pool[i].dma_addr,
4069 priv->hw_setting.rx_buf_size,
4070 PCI_DMA_FROMDEVICE);
4071 dev_kfree_skb(rxq->pool[i].skb);
4072 }
4073 }
4074
4075 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
4076 rxq->dma_addr);
4077 rxq->bd = NULL;
4078 }
4079
4080 int iwl4965_rx_queue_alloc(struct iwl_priv *priv)
4081 {
4082 struct iwl4965_rx_queue *rxq = &priv->rxq;
4083 struct pci_dev *dev = priv->pci_dev;
4084 int i;
4085
4086 spin_lock_init(&rxq->lock);
4087 INIT_LIST_HEAD(&rxq->rx_free);
4088 INIT_LIST_HEAD(&rxq->rx_used);
4089
4090 /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
4091 rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
4092 if (!rxq->bd)
4093 return -ENOMEM;
4094
4095 /* Fill the rx_used queue with _all_ of the Rx buffers */
4096 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
4097 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4098
4099 /* Set us so that we have processed and used all buffers, but have
4100 * not restocked the Rx queue with fresh buffers */
4101 rxq->read = rxq->write = 0;
4102 rxq->free_count = 0;
4103 rxq->need_update = 0;
4104 return 0;
4105 }
4106
4107 void iwl4965_rx_queue_reset(struct iwl_priv *priv, struct iwl4965_rx_queue *rxq)
4108 {
4109 unsigned long flags;
4110 int i;
4111 spin_lock_irqsave(&rxq->lock, flags);
4112 INIT_LIST_HEAD(&rxq->rx_free);
4113 INIT_LIST_HEAD(&rxq->rx_used);
4114 /* Fill the rx_used queue with _all_ of the Rx buffers */
4115 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
4116 /* In the reset function, these buffers may have been allocated
4117 * to an SKB, so we need to unmap and free potential storage */
4118 if (rxq->pool[i].skb != NULL) {
4119 pci_unmap_single(priv->pci_dev,
4120 rxq->pool[i].dma_addr,
4121 priv->hw_setting.rx_buf_size,
4122 PCI_DMA_FROMDEVICE);
4123 priv->alloc_rxb_skb--;
4124 dev_kfree_skb(rxq->pool[i].skb);
4125 rxq->pool[i].skb = NULL;
4126 }
4127 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4128 }
4129
4130 /* Set us so that we have processed and used all buffers, but have
4131 * not restocked the Rx queue with fresh buffers */
4132 rxq->read = rxq->write = 0;
4133 rxq->free_count = 0;
4134 spin_unlock_irqrestore(&rxq->lock, flags);
4135 }
4136
4137 /* Convert linear signal-to-noise ratio into dB */
4138 static u8 ratio2dB[100] = {
4139 /* 0 1 2 3 4 5 6 7 8 9 */
4140 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4141 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4142 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4143 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4144 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4145 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4146 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4147 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4148 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4149 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
4150 };
4151
4152 /* Calculates a relative dB value from a ratio of linear
4153 * (i.e. not dB) signal levels.
4154 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4155 int iwl4965_calc_db_from_ratio(int sig_ratio)
4156 {
4157 /* 1000:1 or higher just report as 60 dB */
4158 if (sig_ratio >= 1000)
4159 return 60;
4160
4161 /* 100:1 or higher, divide by 10 and use table,
4162 * add 20 dB to make up for divide by 10 */
4163 if (sig_ratio >= 100)
4164 return (20 + (int)ratio2dB[sig_ratio/10]);
4165
4166 /* We shouldn't see this */
4167 if (sig_ratio < 1)
4168 return 0;
4169
4170 /* Use table for ratios 1:1 - 99:1 */
4171 return (int)ratio2dB[sig_ratio];
4172 }
4173
4174 #define PERFECT_RSSI (-20) /* dBm */
4175 #define WORST_RSSI (-95) /* dBm */
4176 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4177
4178 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4179 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4180 * about formulas used below. */
4181 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
4182 {
4183 int sig_qual;
4184 int degradation = PERFECT_RSSI - rssi_dbm;
4185
4186 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4187 * as indicator; formula is (signal dbm - noise dbm).
4188 * SNR at or above 40 is a great signal (100%).
4189 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4190 * Weakest usable signal is usually 10 - 15 dB SNR. */
4191 if (noise_dbm) {
4192 if (rssi_dbm - noise_dbm >= 40)
4193 return 100;
4194 else if (rssi_dbm < noise_dbm)
4195 return 0;
4196 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4197
4198 /* Else use just the signal level.
4199 * This formula is a least squares fit of data points collected and
4200 * compared with a reference system that had a percentage (%) display
4201 * for signal quality. */
4202 } else
4203 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4204 (15 * RSSI_RANGE + 62 * degradation)) /
4205 (RSSI_RANGE * RSSI_RANGE);
4206
4207 if (sig_qual > 100)
4208 sig_qual = 100;
4209 else if (sig_qual < 1)
4210 sig_qual = 0;
4211
4212 return sig_qual;
4213 }
4214
4215 /**
4216 * iwl4965_rx_handle - Main entry function for receiving responses from uCode
4217 *
4218 * Uses the priv->rx_handlers callback function array to invoke
4219 * the appropriate handlers, including command responses,
4220 * frame-received notifications, and other notifications.
4221 */
4222 static void iwl4965_rx_handle(struct iwl_priv *priv)
4223 {
4224 struct iwl4965_rx_mem_buffer *rxb;
4225 struct iwl4965_rx_packet *pkt;
4226 struct iwl4965_rx_queue *rxq = &priv->rxq;
4227 u32 r, i;
4228 int reclaim;
4229 unsigned long flags;
4230 u8 fill_rx = 0;
4231 u32 count = 8;
4232
4233 /* uCode's read index (stored in shared DRAM) indicates the last Rx
4234 * buffer that the driver may process (last buffer filled by ucode). */
4235 r = iwl4965_hw_get_rx_read(priv);
4236 i = rxq->read;
4237
4238 /* Rx interrupt, but nothing sent from uCode */
4239 if (i == r)
4240 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4241
4242 if (iwl4965_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
4243 fill_rx = 1;
4244
4245 while (i != r) {
4246 rxb = rxq->queue[i];
4247
4248 /* If an RXB doesn't have a Rx queue slot associated with it,
4249 * then a bug has been introduced in the queue refilling
4250 * routines -- catch it here */
4251 BUG_ON(rxb == NULL);
4252
4253 rxq->queue[i] = NULL;
4254
4255 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4256 priv->hw_setting.rx_buf_size,
4257 PCI_DMA_FROMDEVICE);
4258 pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4259
4260 /* Reclaim a command buffer only if this packet is a response
4261 * to a (driver-originated) command.
4262 * If the packet (e.g. Rx frame) originated from uCode,
4263 * there is no command buffer to reclaim.
4264 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4265 * but apparently a few don't get set; catch them here. */
4266 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4267 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
4268 (pkt->hdr.cmd != REPLY_4965_RX) &&
4269 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
4270 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4271 (pkt->hdr.cmd != REPLY_TX);
4272
4273 /* Based on type of command response or notification,
4274 * handle those that need handling via function in
4275 * rx_handlers table. See iwl4965_setup_rx_handlers() */
4276 if (priv->rx_handlers[pkt->hdr.cmd]) {
4277 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4278 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4279 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4280 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4281 } else {
4282 /* No handling needed */
4283 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4284 "r %d i %d No handler needed for %s, 0x%02x\n",
4285 r, i, get_cmd_string(pkt->hdr.cmd),
4286 pkt->hdr.cmd);
4287 }
4288
4289 if (reclaim) {
4290 /* Invoke any callbacks, transfer the skb to caller, and
4291 * fire off the (possibly) blocking iwl4965_send_cmd()
4292 * as we reclaim the driver command queue */
4293 if (rxb && rxb->skb)
4294 iwl4965_tx_cmd_complete(priv, rxb);
4295 else
4296 IWL_WARNING("Claim null rxb?\n");
4297 }
4298
4299 /* For now we just don't re-use anything. We can tweak this
4300 * later to try and re-use notification packets and SKBs that
4301 * fail to Rx correctly */
4302 if (rxb->skb != NULL) {
4303 priv->alloc_rxb_skb--;
4304 dev_kfree_skb_any(rxb->skb);
4305 rxb->skb = NULL;
4306 }
4307
4308 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4309 priv->hw_setting.rx_buf_size,
4310 PCI_DMA_FROMDEVICE);
4311 spin_lock_irqsave(&rxq->lock, flags);
4312 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4313 spin_unlock_irqrestore(&rxq->lock, flags);
4314 i = (i + 1) & RX_QUEUE_MASK;
4315 /* If there are a lot of unused frames,
4316 * restock the Rx queue so ucode wont assert. */
4317 if (fill_rx) {
4318 count++;
4319 if (count >= 8) {
4320 priv->rxq.read = i;
4321 __iwl4965_rx_replenish(priv);
4322 count = 0;
4323 }
4324 }
4325 }
4326
4327 /* Backtrack one entry */
4328 priv->rxq.read = i;
4329 iwl4965_rx_queue_restock(priv);
4330 }
4331
4332 /**
4333 * iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
4334 */
4335 static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv,
4336 struct iwl4965_tx_queue *txq)
4337 {
4338 u32 reg = 0;
4339 int rc = 0;
4340 int txq_id = txq->q.id;
4341
4342 if (txq->need_update == 0)
4343 return rc;
4344
4345 /* if we're trying to save power */
4346 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4347 /* wake up nic if it's powered down ...
4348 * uCode will wake up, and interrupt us again, so next
4349 * time we'll skip this part. */
4350 reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4351
4352 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4353 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4354 iwl4965_set_bit(priv, CSR_GP_CNTRL,
4355 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4356 return rc;
4357 }
4358
4359 /* restore this queue's parameters in nic hardware. */
4360 rc = iwl4965_grab_nic_access(priv);
4361 if (rc)
4362 return rc;
4363 iwl4965_write_direct32(priv, HBUS_TARG_WRPTR,
4364 txq->q.write_ptr | (txq_id << 8));
4365 iwl4965_release_nic_access(priv);
4366
4367 /* else not in power-save mode, uCode will never sleep when we're
4368 * trying to tx (during RFKILL, we're not trying to tx). */
4369 } else
4370 iwl4965_write32(priv, HBUS_TARG_WRPTR,
4371 txq->q.write_ptr | (txq_id << 8));
4372
4373 txq->need_update = 0;
4374
4375 return rc;
4376 }
4377
4378 #ifdef CONFIG_IWLWIFI_DEBUG
4379 static void iwl4965_print_rx_config_cmd(struct iwl4965_rxon_cmd *rxon)
4380 {
4381 DECLARE_MAC_BUF(mac);
4382
4383 IWL_DEBUG_RADIO("RX CONFIG:\n");
4384 iwl_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4385 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4386 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4387 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4388 le32_to_cpu(rxon->filter_flags));
4389 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4390 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4391 rxon->ofdm_basic_rates);
4392 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4393 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4394 print_mac(mac, rxon->node_addr));
4395 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4396 print_mac(mac, rxon->bssid_addr));
4397 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4398 }
4399 #endif
4400
4401 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
4402 {
4403 IWL_DEBUG_ISR("Enabling interrupts\n");
4404 set_bit(STATUS_INT_ENABLED, &priv->status);
4405 iwl4965_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4406 }
4407
4408 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
4409 {
4410 clear_bit(STATUS_INT_ENABLED, &priv->status);
4411
4412 /* disable interrupts from uCode/NIC to host */
4413 iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
4414
4415 /* acknowledge/clear/reset any interrupts still pending
4416 * from uCode or flow handler (Rx/Tx DMA) */
4417 iwl4965_write32(priv, CSR_INT, 0xffffffff);
4418 iwl4965_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4419 IWL_DEBUG_ISR("Disabled interrupts\n");
4420 }
4421
4422 static const char *desc_lookup(int i)
4423 {
4424 switch (i) {
4425 case 1:
4426 return "FAIL";
4427 case 2:
4428 return "BAD_PARAM";
4429 case 3:
4430 return "BAD_CHECKSUM";
4431 case 4:
4432 return "NMI_INTERRUPT";
4433 case 5:
4434 return "SYSASSERT";
4435 case 6:
4436 return "FATAL_ERROR";
4437 }
4438
4439 return "UNKNOWN";
4440 }
4441
4442 #define ERROR_START_OFFSET (1 * sizeof(u32))
4443 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
4444
4445 static void iwl4965_dump_nic_error_log(struct iwl_priv *priv)
4446 {
4447 u32 data2, line;
4448 u32 desc, time, count, base, data1;
4449 u32 blink1, blink2, ilink1, ilink2;
4450 int rc;
4451
4452 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4453
4454 if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4455 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4456 return;
4457 }
4458
4459 rc = iwl4965_grab_nic_access(priv);
4460 if (rc) {
4461 IWL_WARNING("Can not read from adapter at this time.\n");
4462 return;
4463 }
4464
4465 count = iwl4965_read_targ_mem(priv, base);
4466
4467 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4468 IWL_ERROR("Start IWL Error Log Dump:\n");
4469 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
4470 }
4471
4472 desc = iwl4965_read_targ_mem(priv, base + 1 * sizeof(u32));
4473 blink1 = iwl4965_read_targ_mem(priv, base + 3 * sizeof(u32));
4474 blink2 = iwl4965_read_targ_mem(priv, base + 4 * sizeof(u32));
4475 ilink1 = iwl4965_read_targ_mem(priv, base + 5 * sizeof(u32));
4476 ilink2 = iwl4965_read_targ_mem(priv, base + 6 * sizeof(u32));
4477 data1 = iwl4965_read_targ_mem(priv, base + 7 * sizeof(u32));
4478 data2 = iwl4965_read_targ_mem(priv, base + 8 * sizeof(u32));
4479 line = iwl4965_read_targ_mem(priv, base + 9 * sizeof(u32));
4480 time = iwl4965_read_targ_mem(priv, base + 11 * sizeof(u32));
4481
4482 IWL_ERROR("Desc Time "
4483 "data1 data2 line\n");
4484 IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4485 desc_lookup(desc), desc, time, data1, data2, line);
4486 IWL_ERROR("blink1 blink2 ilink1 ilink2\n");
4487 IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
4488 ilink1, ilink2);
4489
4490 iwl4965_release_nic_access(priv);
4491 }
4492
4493 #define EVENT_START_OFFSET (4 * sizeof(u32))
4494
4495 /**
4496 * iwl4965_print_event_log - Dump error event log to syslog
4497 *
4498 * NOTE: Must be called with iwl4965_grab_nic_access() already obtained!
4499 */
4500 static void iwl4965_print_event_log(struct iwl_priv *priv, u32 start_idx,
4501 u32 num_events, u32 mode)
4502 {
4503 u32 i;
4504 u32 base; /* SRAM byte address of event log header */
4505 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4506 u32 ptr; /* SRAM byte address of log data */
4507 u32 ev, time, data; /* event log data */
4508
4509 if (num_events == 0)
4510 return;
4511
4512 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4513
4514 if (mode == 0)
4515 event_size = 2 * sizeof(u32);
4516 else
4517 event_size = 3 * sizeof(u32);
4518
4519 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4520
4521 /* "time" is actually "data" for mode 0 (no timestamp).
4522 * place event id # at far right for easier visual parsing. */
4523 for (i = 0; i < num_events; i++) {
4524 ev = iwl4965_read_targ_mem(priv, ptr);
4525 ptr += sizeof(u32);
4526 time = iwl4965_read_targ_mem(priv, ptr);
4527 ptr += sizeof(u32);
4528 if (mode == 0)
4529 IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4530 else {
4531 data = iwl4965_read_targ_mem(priv, ptr);
4532 ptr += sizeof(u32);
4533 IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4534 }
4535 }
4536 }
4537
4538 static void iwl4965_dump_nic_event_log(struct iwl_priv *priv)
4539 {
4540 int rc;
4541 u32 base; /* SRAM byte address of event log header */
4542 u32 capacity; /* event log capacity in # entries */
4543 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
4544 u32 num_wraps; /* # times uCode wrapped to top of log */
4545 u32 next_entry; /* index of next entry to be written by uCode */
4546 u32 size; /* # entries that we'll print */
4547
4548 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4549 if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4550 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4551 return;
4552 }
4553
4554 rc = iwl4965_grab_nic_access(priv);
4555 if (rc) {
4556 IWL_WARNING("Can not read from adapter at this time.\n");
4557 return;
4558 }
4559
4560 /* event log header */
4561 capacity = iwl4965_read_targ_mem(priv, base);
4562 mode = iwl4965_read_targ_mem(priv, base + (1 * sizeof(u32)));
4563 num_wraps = iwl4965_read_targ_mem(priv, base + (2 * sizeof(u32)));
4564 next_entry = iwl4965_read_targ_mem(priv, base + (3 * sizeof(u32)));
4565
4566 size = num_wraps ? capacity : next_entry;
4567
4568 /* bail out if nothing in log */
4569 if (size == 0) {
4570 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4571 iwl4965_release_nic_access(priv);
4572 return;
4573 }
4574
4575 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4576 size, num_wraps);
4577
4578 /* if uCode has wrapped back to top of log, start at the oldest entry,
4579 * i.e the next one that uCode would fill. */
4580 if (num_wraps)
4581 iwl4965_print_event_log(priv, next_entry,
4582 capacity - next_entry, mode);
4583
4584 /* (then/else) start at top of log */
4585 iwl4965_print_event_log(priv, 0, next_entry, mode);
4586
4587 iwl4965_release_nic_access(priv);
4588 }
4589
4590 /**
4591 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
4592 */
4593 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
4594 {
4595 /* Set the FW error flag -- cleared on iwl4965_down */
4596 set_bit(STATUS_FW_ERROR, &priv->status);
4597
4598 /* Cancel currently queued command. */
4599 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4600
4601 #ifdef CONFIG_IWLWIFI_DEBUG
4602 if (iwl_debug_level & IWL_DL_FW_ERRORS) {
4603 iwl4965_dump_nic_error_log(priv);
4604 iwl4965_dump_nic_event_log(priv);
4605 iwl4965_print_rx_config_cmd(&priv->staging_rxon);
4606 }
4607 #endif
4608
4609 wake_up_interruptible(&priv->wait_command_queue);
4610
4611 /* Keep the restart process from trying to send host
4612 * commands by clearing the INIT status bit */
4613 clear_bit(STATUS_READY, &priv->status);
4614
4615 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4616 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4617 "Restarting adapter due to uCode error.\n");
4618
4619 if (iwl4965_is_associated(priv)) {
4620 memcpy(&priv->recovery_rxon, &priv->active_rxon,
4621 sizeof(priv->recovery_rxon));
4622 priv->error_recovering = 1;
4623 }
4624 queue_work(priv->workqueue, &priv->restart);
4625 }
4626 }
4627
4628 static void iwl4965_error_recovery(struct iwl_priv *priv)
4629 {
4630 unsigned long flags;
4631
4632 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4633 sizeof(priv->staging_rxon));
4634 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4635 iwl4965_commit_rxon(priv);
4636
4637 iwl4965_rxon_add_station(priv, priv->bssid, 1);
4638
4639 spin_lock_irqsave(&priv->lock, flags);
4640 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4641 priv->error_recovering = 0;
4642 spin_unlock_irqrestore(&priv->lock, flags);
4643 }
4644
4645 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
4646 {
4647 u32 inta, handled = 0;
4648 u32 inta_fh;
4649 unsigned long flags;
4650 #ifdef CONFIG_IWLWIFI_DEBUG
4651 u32 inta_mask;
4652 #endif
4653
4654 spin_lock_irqsave(&priv->lock, flags);
4655
4656 /* Ack/clear/reset pending uCode interrupts.
4657 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4658 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
4659 inta = iwl4965_read32(priv, CSR_INT);
4660 iwl4965_write32(priv, CSR_INT, inta);
4661
4662 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4663 * Any new interrupts that happen after this, either while we're
4664 * in this tasklet, or later, will show up in next ISR/tasklet. */
4665 inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
4666 iwl4965_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4667
4668 #ifdef CONFIG_IWLWIFI_DEBUG
4669 if (iwl_debug_level & IWL_DL_ISR) {
4670 /* just for debug */
4671 inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
4672 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4673 inta, inta_mask, inta_fh);
4674 }
4675 #endif
4676
4677 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4678 * atomic, make sure that inta covers all the interrupts that
4679 * we've discovered, even if FH interrupt came in just after
4680 * reading CSR_INT. */
4681 if (inta_fh & CSR49_FH_INT_RX_MASK)
4682 inta |= CSR_INT_BIT_FH_RX;
4683 if (inta_fh & CSR49_FH_INT_TX_MASK)
4684 inta |= CSR_INT_BIT_FH_TX;
4685
4686 /* Now service all interrupt bits discovered above. */
4687 if (inta & CSR_INT_BIT_HW_ERR) {
4688 IWL_ERROR("Microcode HW error detected. Restarting.\n");
4689
4690 /* Tell the device to stop sending interrupts */
4691 iwl4965_disable_interrupts(priv);
4692
4693 iwl4965_irq_handle_error(priv);
4694
4695 handled |= CSR_INT_BIT_HW_ERR;
4696
4697 spin_unlock_irqrestore(&priv->lock, flags);
4698
4699 return;
4700 }
4701
4702 #ifdef CONFIG_IWLWIFI_DEBUG
4703 if (iwl_debug_level & (IWL_DL_ISR)) {
4704 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4705 if (inta & CSR_INT_BIT_SCD)
4706 IWL_DEBUG_ISR("Scheduler finished to transmit "
4707 "the frame/frames.\n");
4708
4709 /* Alive notification via Rx interrupt will do the real work */
4710 if (inta & CSR_INT_BIT_ALIVE)
4711 IWL_DEBUG_ISR("Alive interrupt\n");
4712 }
4713 #endif
4714 /* Safely ignore these bits for debug checks below */
4715 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
4716
4717 /* HW RF KILL switch toggled */
4718 if (inta & CSR_INT_BIT_RF_KILL) {
4719 int hw_rf_kill = 0;
4720 if (!(iwl4965_read32(priv, CSR_GP_CNTRL) &
4721 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
4722 hw_rf_kill = 1;
4723
4724 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
4725 "RF_KILL bit toggled to %s.\n",
4726 hw_rf_kill ? "disable radio":"enable radio");
4727
4728 /* Queue restart only if RF_KILL switch was set to "kill"
4729 * when we loaded driver, and is now set to "enable".
4730 * After we're Alive, RF_KILL gets handled by
4731 * iwl4965_rx_card_state_notif() */
4732 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
4733 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4734 queue_work(priv->workqueue, &priv->restart);
4735 }
4736
4737 handled |= CSR_INT_BIT_RF_KILL;
4738 }
4739
4740 /* Chip got too hot and stopped itself */
4741 if (inta & CSR_INT_BIT_CT_KILL) {
4742 IWL_ERROR("Microcode CT kill error detected.\n");
4743 handled |= CSR_INT_BIT_CT_KILL;
4744 }
4745
4746 /* Error detected by uCode */
4747 if (inta & CSR_INT_BIT_SW_ERR) {
4748 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
4749 inta);
4750 iwl4965_irq_handle_error(priv);
4751 handled |= CSR_INT_BIT_SW_ERR;
4752 }
4753
4754 /* uCode wakes up after power-down sleep */
4755 if (inta & CSR_INT_BIT_WAKEUP) {
4756 IWL_DEBUG_ISR("Wakeup interrupt\n");
4757 iwl4965_rx_queue_update_write_ptr(priv, &priv->rxq);
4758 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]);
4759 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]);
4760 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]);
4761 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]);
4762 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]);
4763 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]);
4764
4765 handled |= CSR_INT_BIT_WAKEUP;
4766 }
4767
4768 /* All uCode command responses, including Tx command responses,
4769 * Rx "responses" (frame-received notification), and other
4770 * notifications from uCode come through here*/
4771 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
4772 iwl4965_rx_handle(priv);
4773 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
4774 }
4775
4776 if (inta & CSR_INT_BIT_FH_TX) {
4777 IWL_DEBUG_ISR("Tx interrupt\n");
4778 handled |= CSR_INT_BIT_FH_TX;
4779 }
4780
4781 if (inta & ~handled)
4782 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
4783
4784 if (inta & ~CSR_INI_SET_MASK) {
4785 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
4786 inta & ~CSR_INI_SET_MASK);
4787 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
4788 }
4789
4790 /* Re-enable all interrupts */
4791 iwl4965_enable_interrupts(priv);
4792
4793 #ifdef CONFIG_IWLWIFI_DEBUG
4794 if (iwl_debug_level & (IWL_DL_ISR)) {
4795 inta = iwl4965_read32(priv, CSR_INT);
4796 inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
4797 inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
4798 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4799 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
4800 }
4801 #endif
4802 spin_unlock_irqrestore(&priv->lock, flags);
4803 }
4804
4805 static irqreturn_t iwl4965_isr(int irq, void *data)
4806 {
4807 struct iwl_priv *priv = data;
4808 u32 inta, inta_mask;
4809 u32 inta_fh;
4810 if (!priv)
4811 return IRQ_NONE;
4812
4813 spin_lock(&priv->lock);
4814
4815 /* Disable (but don't clear!) interrupts here to avoid
4816 * back-to-back ISRs and sporadic interrupts from our NIC.
4817 * If we have something to service, the tasklet will re-enable ints.
4818 * If we *don't* have something, we'll re-enable before leaving here. */
4819 inta_mask = iwl4965_read32(priv, CSR_INT_MASK); /* just for debug */
4820 iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
4821
4822 /* Discover which interrupts are active/pending */
4823 inta = iwl4965_read32(priv, CSR_INT);
4824 inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
4825
4826 /* Ignore interrupt if there's nothing in NIC to service.
4827 * This may be due to IRQ shared with another device,
4828 * or due to sporadic interrupts thrown from our NIC. */
4829 if (!inta && !inta_fh) {
4830 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4831 goto none;
4832 }
4833
4834 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
4835 /* Hardware disappeared. It might have already raised
4836 * an interrupt */
4837 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
4838 goto unplugged;
4839 }
4840
4841 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4842 inta, inta_mask, inta_fh);
4843
4844 inta &= ~CSR_INT_BIT_SCD;
4845
4846 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
4847 if (likely(inta || inta_fh))
4848 tasklet_schedule(&priv->irq_tasklet);
4849
4850 unplugged:
4851 spin_unlock(&priv->lock);
4852 return IRQ_HANDLED;
4853
4854 none:
4855 /* re-enable interrupts here since we don't have anything to service. */
4856 iwl4965_enable_interrupts(priv);
4857 spin_unlock(&priv->lock);
4858 return IRQ_NONE;
4859 }
4860
4861 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
4862 * sending probe req. This should be set long enough to hear probe responses
4863 * from more than one AP. */
4864 #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
4865 #define IWL_ACTIVE_DWELL_TIME_52 (10)
4866
4867 /* For faster active scanning, scan will move to the next channel if fewer than
4868 * PLCP_QUIET_THRESH packets are heard on this channel within
4869 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
4870 * time if it's a quiet channel (nothing responded to our probe, and there's
4871 * no other traffic).
4872 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
4873 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
4874 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
4875
4876 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
4877 * Must be set longer than active dwell time.
4878 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
4879 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
4880 #define IWL_PASSIVE_DWELL_TIME_52 (10)
4881 #define IWL_PASSIVE_DWELL_BASE (100)
4882 #define IWL_CHANNEL_TUNE_TIME 5
4883
4884 static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
4885 enum ieee80211_band band)
4886 {
4887 if (band == IEEE80211_BAND_5GHZ)
4888 return IWL_ACTIVE_DWELL_TIME_52;
4889 else
4890 return IWL_ACTIVE_DWELL_TIME_24;
4891 }
4892
4893 static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
4894 enum ieee80211_band band)
4895 {
4896 u16 active = iwl4965_get_active_dwell_time(priv, band);
4897 u16 passive = (band != IEEE80211_BAND_5GHZ) ?
4898 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
4899 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
4900
4901 if (iwl4965_is_associated(priv)) {
4902 /* If we're associated, we clamp the maximum passive
4903 * dwell time to be 98% of the beacon interval (minus
4904 * 2 * channel tune time) */
4905 passive = priv->beacon_int;
4906 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
4907 passive = IWL_PASSIVE_DWELL_BASE;
4908 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
4909 }
4910
4911 if (passive <= active)
4912 passive = active + 1;
4913
4914 return passive;
4915 }
4916
4917 static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
4918 enum ieee80211_band band,
4919 u8 is_active, u8 direct_mask,
4920 struct iwl4965_scan_channel *scan_ch)
4921 {
4922 const struct ieee80211_channel *channels = NULL;
4923 const struct ieee80211_supported_band *sband;
4924 const struct iwl_channel_info *ch_info;
4925 u16 passive_dwell = 0;
4926 u16 active_dwell = 0;
4927 int added, i;
4928
4929 sband = iwl4965_get_hw_mode(priv, band);
4930 if (!sband)
4931 return 0;
4932
4933 channels = sband->channels;
4934
4935 active_dwell = iwl4965_get_active_dwell_time(priv, band);
4936 passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
4937
4938 for (i = 0, added = 0; i < sband->n_channels; i++) {
4939 if (ieee80211_frequency_to_channel(channels[i].center_freq) ==
4940 le16_to_cpu(priv->active_rxon.channel)) {
4941 if (iwl4965_is_associated(priv)) {
4942 IWL_DEBUG_SCAN
4943 ("Skipping current channel %d\n",
4944 le16_to_cpu(priv->active_rxon.channel));
4945 continue;
4946 }
4947 } else if (priv->only_active_channel)
4948 continue;
4949
4950 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
4951
4952 ch_info = iwl4965_get_channel_info(priv, band,
4953 scan_ch->channel);
4954 if (!is_channel_valid(ch_info)) {
4955 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
4956 scan_ch->channel);
4957 continue;
4958 }
4959
4960 if (!is_active || is_channel_passive(ch_info) ||
4961 (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
4962 scan_ch->type = 0; /* passive */
4963 else
4964 scan_ch->type = 1; /* active */
4965
4966 if (scan_ch->type & 1)
4967 scan_ch->type |= (direct_mask << 1);
4968
4969 if (is_channel_narrow(ch_info))
4970 scan_ch->type |= (1 << 7);
4971
4972 scan_ch->active_dwell = cpu_to_le16(active_dwell);
4973 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
4974
4975 /* Set txpower levels to defaults */
4976 scan_ch->tpc.dsp_atten = 110;
4977 /* scan_pwr_info->tpc.dsp_atten; */
4978
4979 /*scan_pwr_info->tpc.tx_gain; */
4980 if (band == IEEE80211_BAND_5GHZ)
4981 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
4982 else {
4983 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
4984 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
4985 * power level:
4986 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
4987 */
4988 }
4989
4990 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
4991 scan_ch->channel,
4992 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
4993 (scan_ch->type & 1) ?
4994 active_dwell : passive_dwell);
4995
4996 scan_ch++;
4997 added++;
4998 }
4999
5000 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
5001 return added;
5002 }
5003
5004 static void iwl4965_init_hw_rates(struct iwl_priv *priv,
5005 struct ieee80211_rate *rates)
5006 {
5007 int i;
5008
5009 for (i = 0; i < IWL_RATE_COUNT; i++) {
5010 rates[i].bitrate = iwl4965_rates[i].ieee * 5;
5011 rates[i].hw_value = i; /* Rate scaling will work on indexes */
5012 rates[i].hw_value_short = i;
5013 rates[i].flags = 0;
5014 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
5015 /*
5016 * If CCK != 1M then set short preamble rate flag.
5017 */
5018 rates[i].flags |=
5019 (iwl4965_rates[i].plcp == IWL_RATE_1M_PLCP) ?
5020 0 : IEEE80211_RATE_SHORT_PREAMBLE;
5021 }
5022 }
5023 }
5024
5025 /**
5026 * iwl4965_init_geos - Initialize mac80211's geo/channel info based from eeprom
5027 */
5028 int iwl4965_init_geos(struct iwl_priv *priv)
5029 {
5030 struct iwl_channel_info *ch;
5031 struct ieee80211_supported_band *sband;
5032 struct ieee80211_channel *channels;
5033 struct ieee80211_channel *geo_ch;
5034 struct ieee80211_rate *rates;
5035 int i = 0;
5036
5037 if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
5038 priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
5039 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5040 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5041 return 0;
5042 }
5043
5044 channels = kzalloc(sizeof(struct ieee80211_channel) *
5045 priv->channel_count, GFP_KERNEL);
5046 if (!channels)
5047 return -ENOMEM;
5048
5049 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
5050 GFP_KERNEL);
5051 if (!rates) {
5052 kfree(channels);
5053 return -ENOMEM;
5054 }
5055
5056 /* 5.2GHz channels start after the 2.4GHz channels */
5057 sband = &priv->bands[IEEE80211_BAND_5GHZ];
5058 sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
5059 /* just OFDM */
5060 sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
5061 sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
5062
5063 iwl4965_init_ht_hw_capab(&sband->ht_info, IEEE80211_BAND_5GHZ);
5064
5065 sband = &priv->bands[IEEE80211_BAND_2GHZ];
5066 sband->channels = channels;
5067 /* OFDM & CCK */
5068 sband->bitrates = rates;
5069 sband->n_bitrates = IWL_RATE_COUNT;
5070
5071 iwl4965_init_ht_hw_capab(&sband->ht_info, IEEE80211_BAND_2GHZ);
5072
5073 priv->ieee_channels = channels;
5074 priv->ieee_rates = rates;
5075
5076 iwl4965_init_hw_rates(priv, rates);
5077
5078 for (i = 0; i < priv->channel_count; i++) {
5079 ch = &priv->channel_info[i];
5080
5081 /* FIXME: might be removed if scan is OK */
5082 if (!is_channel_valid(ch))
5083 continue;
5084
5085 if (is_channel_a_band(ch))
5086 sband = &priv->bands[IEEE80211_BAND_5GHZ];
5087 else
5088 sband = &priv->bands[IEEE80211_BAND_2GHZ];
5089
5090 geo_ch = &sband->channels[sband->n_channels++];
5091
5092 geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
5093 geo_ch->max_power = ch->max_power_avg;
5094 geo_ch->max_antenna_gain = 0xff;
5095 geo_ch->hw_value = ch->channel;
5096
5097 if (is_channel_valid(ch)) {
5098 if (!(ch->flags & EEPROM_CHANNEL_IBSS))
5099 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
5100
5101 if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
5102 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
5103
5104 if (ch->flags & EEPROM_CHANNEL_RADAR)
5105 geo_ch->flags |= IEEE80211_CHAN_RADAR;
5106
5107 if (ch->max_power_avg > priv->max_channel_txpower_limit)
5108 priv->max_channel_txpower_limit =
5109 ch->max_power_avg;
5110 } else {
5111 geo_ch->flags |= IEEE80211_CHAN_DISABLED;
5112 }
5113
5114 /* Save flags for reg domain usage */
5115 geo_ch->orig_flags = geo_ch->flags;
5116
5117 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
5118 ch->channel, geo_ch->center_freq,
5119 is_channel_a_band(ch) ? "5.2" : "2.4",
5120 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
5121 "restricted" : "valid",
5122 geo_ch->flags);
5123 }
5124
5125 if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
5126 priv->cfg->sku & IWL_SKU_A) {
5127 printk(KERN_INFO DRV_NAME
5128 ": Incorrectly detected BG card as ABG. Please send "
5129 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5130 priv->pci_dev->device, priv->pci_dev->subsystem_device);
5131 priv->cfg->sku &= ~IWL_SKU_A;
5132 }
5133
5134 printk(KERN_INFO DRV_NAME
5135 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5136 priv->bands[IEEE80211_BAND_2GHZ].n_channels,
5137 priv->bands[IEEE80211_BAND_5GHZ].n_channels);
5138
5139 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->bands[IEEE80211_BAND_2GHZ];
5140 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->bands[IEEE80211_BAND_5GHZ];
5141
5142 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5143
5144 return 0;
5145 }
5146
5147 /*
5148 * iwl4965_free_geos - undo allocations in iwl4965_init_geos
5149 */
5150 void iwl4965_free_geos(struct iwl_priv *priv)
5151 {
5152 kfree(priv->ieee_channels);
5153 kfree(priv->ieee_rates);
5154 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
5155 }
5156
5157 /******************************************************************************
5158 *
5159 * uCode download functions
5160 *
5161 ******************************************************************************/
5162
5163 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
5164 {
5165 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
5166 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
5167 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5168 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
5169 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5170 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
5171 }
5172
5173 /**
5174 * iwl4965_verify_inst_full - verify runtime uCode image in card vs. host,
5175 * looking at all data.
5176 */
5177 static int iwl4965_verify_inst_full(struct iwl_priv *priv, __le32 *image,
5178 u32 len)
5179 {
5180 u32 val;
5181 u32 save_len = len;
5182 int rc = 0;
5183 u32 errcnt;
5184
5185 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5186
5187 rc = iwl4965_grab_nic_access(priv);
5188 if (rc)
5189 return rc;
5190
5191 iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5192
5193 errcnt = 0;
5194 for (; len > 0; len -= sizeof(u32), image++) {
5195 /* read data comes through single port, auto-incr addr */
5196 /* NOTE: Use the debugless read so we don't flood kernel log
5197 * if IWL_DL_IO is set */
5198 val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5199 if (val != le32_to_cpu(*image)) {
5200 IWL_ERROR("uCode INST section is invalid at "
5201 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5202 save_len - len, val, le32_to_cpu(*image));
5203 rc = -EIO;
5204 errcnt++;
5205 if (errcnt >= 20)
5206 break;
5207 }
5208 }
5209
5210 iwl4965_release_nic_access(priv);
5211
5212 if (!errcnt)
5213 IWL_DEBUG_INFO
5214 ("ucode image in INSTRUCTION memory is good\n");
5215
5216 return rc;
5217 }
5218
5219
5220 /**
5221 * iwl4965_verify_inst_sparse - verify runtime uCode image in card vs. host,
5222 * using sample data 100 bytes apart. If these sample points are good,
5223 * it's a pretty good bet that everything between them is good, too.
5224 */
5225 static int iwl4965_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
5226 {
5227 u32 val;
5228 int rc = 0;
5229 u32 errcnt = 0;
5230 u32 i;
5231
5232 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5233
5234 rc = iwl4965_grab_nic_access(priv);
5235 if (rc)
5236 return rc;
5237
5238 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
5239 /* read data comes through single port, auto-incr addr */
5240 /* NOTE: Use the debugless read so we don't flood kernel log
5241 * if IWL_DL_IO is set */
5242 iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR,
5243 i + RTC_INST_LOWER_BOUND);
5244 val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5245 if (val != le32_to_cpu(*image)) {
5246 #if 0 /* Enable this if you want to see details */
5247 IWL_ERROR("uCode INST section is invalid at "
5248 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5249 i, val, *image);
5250 #endif
5251 rc = -EIO;
5252 errcnt++;
5253 if (errcnt >= 3)
5254 break;
5255 }
5256 }
5257
5258 iwl4965_release_nic_access(priv);
5259
5260 return rc;
5261 }
5262
5263
5264 /**
5265 * iwl4965_verify_ucode - determine which instruction image is in SRAM,
5266 * and verify its contents
5267 */
5268 static int iwl4965_verify_ucode(struct iwl_priv *priv)
5269 {
5270 __le32 *image;
5271 u32 len;
5272 int rc = 0;
5273
5274 /* Try bootstrap */
5275 image = (__le32 *)priv->ucode_boot.v_addr;
5276 len = priv->ucode_boot.len;
5277 rc = iwl4965_verify_inst_sparse(priv, image, len);
5278 if (rc == 0) {
5279 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5280 return 0;
5281 }
5282
5283 /* Try initialize */
5284 image = (__le32 *)priv->ucode_init.v_addr;
5285 len = priv->ucode_init.len;
5286 rc = iwl4965_verify_inst_sparse(priv, image, len);
5287 if (rc == 0) {
5288 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5289 return 0;
5290 }
5291
5292 /* Try runtime/protocol */
5293 image = (__le32 *)priv->ucode_code.v_addr;
5294 len = priv->ucode_code.len;
5295 rc = iwl4965_verify_inst_sparse(priv, image, len);
5296 if (rc == 0) {
5297 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5298 return 0;
5299 }
5300
5301 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5302
5303 /* Since nothing seems to match, show first several data entries in
5304 * instruction SRAM, so maybe visual inspection will give a clue.
5305 * Selection of bootstrap image (vs. other images) is arbitrary. */
5306 image = (__le32 *)priv->ucode_boot.v_addr;
5307 len = priv->ucode_boot.len;
5308 rc = iwl4965_verify_inst_full(priv, image, len);
5309
5310 return rc;
5311 }
5312
5313
5314 /* check contents of special bootstrap uCode SRAM */
5315 static int iwl4965_verify_bsm(struct iwl_priv *priv)
5316 {
5317 __le32 *image = priv->ucode_boot.v_addr;
5318 u32 len = priv->ucode_boot.len;
5319 u32 reg;
5320 u32 val;
5321
5322 IWL_DEBUG_INFO("Begin verify bsm\n");
5323
5324 /* verify BSM SRAM contents */
5325 val = iwl4965_read_prph(priv, BSM_WR_DWCOUNT_REG);
5326 for (reg = BSM_SRAM_LOWER_BOUND;
5327 reg < BSM_SRAM_LOWER_BOUND + len;
5328 reg += sizeof(u32), image ++) {
5329 val = iwl4965_read_prph(priv, reg);
5330 if (val != le32_to_cpu(*image)) {
5331 IWL_ERROR("BSM uCode verification failed at "
5332 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
5333 BSM_SRAM_LOWER_BOUND,
5334 reg - BSM_SRAM_LOWER_BOUND, len,
5335 val, le32_to_cpu(*image));
5336 return -EIO;
5337 }
5338 }
5339
5340 IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
5341
5342 return 0;
5343 }
5344
5345 /**
5346 * iwl4965_load_bsm - Load bootstrap instructions
5347 *
5348 * BSM operation:
5349 *
5350 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
5351 * in special SRAM that does not power down during RFKILL. When powering back
5352 * up after power-saving sleeps (or during initial uCode load), the BSM loads
5353 * the bootstrap program into the on-board processor, and starts it.
5354 *
5355 * The bootstrap program loads (via DMA) instructions and data for a new
5356 * program from host DRAM locations indicated by the host driver in the
5357 * BSM_DRAM_* registers. Once the new program is loaded, it starts
5358 * automatically.
5359 *
5360 * When initializing the NIC, the host driver points the BSM to the
5361 * "initialize" uCode image. This uCode sets up some internal data, then
5362 * notifies host via "initialize alive" that it is complete.
5363 *
5364 * The host then replaces the BSM_DRAM_* pointer values to point to the
5365 * normal runtime uCode instructions and a backup uCode data cache buffer
5366 * (filled initially with starting data values for the on-board processor),
5367 * then triggers the "initialize" uCode to load and launch the runtime uCode,
5368 * which begins normal operation.
5369 *
5370 * When doing a power-save shutdown, runtime uCode saves data SRAM into
5371 * the backup data cache in DRAM before SRAM is powered down.
5372 *
5373 * When powering back up, the BSM loads the bootstrap program. This reloads
5374 * the runtime uCode instructions and the backup data cache into SRAM,
5375 * and re-launches the runtime uCode from where it left off.
5376 */
5377 static int iwl4965_load_bsm(struct iwl_priv *priv)
5378 {
5379 __le32 *image = priv->ucode_boot.v_addr;
5380 u32 len = priv->ucode_boot.len;
5381 dma_addr_t pinst;
5382 dma_addr_t pdata;
5383 u32 inst_len;
5384 u32 data_len;
5385 int rc;
5386 int i;
5387 u32 done;
5388 u32 reg_offset;
5389
5390 IWL_DEBUG_INFO("Begin load bsm\n");
5391
5392 /* make sure bootstrap program is no larger than BSM's SRAM size */
5393 if (len > IWL_MAX_BSM_SIZE)
5394 return -EINVAL;
5395
5396 /* Tell bootstrap uCode where to find the "Initialize" uCode
5397 * in host DRAM ... host DRAM physical address bits 35:4 for 4965.
5398 * NOTE: iwl4965_initialize_alive_start() will replace these values,
5399 * after the "initialize" uCode has run, to point to
5400 * runtime/protocol instructions and backup data cache. */
5401 pinst = priv->ucode_init.p_addr >> 4;
5402 pdata = priv->ucode_init_data.p_addr >> 4;
5403 inst_len = priv->ucode_init.len;
5404 data_len = priv->ucode_init_data.len;
5405
5406 rc = iwl4965_grab_nic_access(priv);
5407 if (rc)
5408 return rc;
5409
5410 iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5411 iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5412 iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
5413 iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
5414
5415 /* Fill BSM memory with bootstrap instructions */
5416 for (reg_offset = BSM_SRAM_LOWER_BOUND;
5417 reg_offset < BSM_SRAM_LOWER_BOUND + len;
5418 reg_offset += sizeof(u32), image++)
5419 _iwl4965_write_prph(priv, reg_offset,
5420 le32_to_cpu(*image));
5421
5422 rc = iwl4965_verify_bsm(priv);
5423 if (rc) {
5424 iwl4965_release_nic_access(priv);
5425 return rc;
5426 }
5427
5428 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
5429 iwl4965_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
5430 iwl4965_write_prph(priv, BSM_WR_MEM_DST_REG,
5431 RTC_INST_LOWER_BOUND);
5432 iwl4965_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
5433
5434 /* Load bootstrap code into instruction SRAM now,
5435 * to prepare to load "initialize" uCode */
5436 iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
5437 BSM_WR_CTRL_REG_BIT_START);
5438
5439 /* Wait for load of bootstrap uCode to finish */
5440 for (i = 0; i < 100; i++) {
5441 done = iwl4965_read_prph(priv, BSM_WR_CTRL_REG);
5442 if (!(done & BSM_WR_CTRL_REG_BIT_START))
5443 break;
5444 udelay(10);
5445 }
5446 if (i < 100)
5447 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
5448 else {
5449 IWL_ERROR("BSM write did not complete!\n");
5450 return -EIO;
5451 }
5452
5453 /* Enable future boot loads whenever power management unit triggers it
5454 * (e.g. when powering back up after power-save shutdown) */
5455 iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
5456 BSM_WR_CTRL_REG_BIT_START_EN);
5457
5458 iwl4965_release_nic_access(priv);
5459
5460 return 0;
5461 }
5462
5463 static void iwl4965_nic_start(struct iwl_priv *priv)
5464 {
5465 /* Remove all resets to allow NIC to operate */
5466 iwl4965_write32(priv, CSR_RESET, 0);
5467 }
5468
5469
5470 /**
5471 * iwl4965_read_ucode - Read uCode images from disk file.
5472 *
5473 * Copy into buffers for card to fetch via bus-mastering
5474 */
5475 static int iwl4965_read_ucode(struct iwl_priv *priv)
5476 {
5477 struct iwl4965_ucode *ucode;
5478 int ret;
5479 const struct firmware *ucode_raw;
5480 const char *name = priv->cfg->fw_name;
5481 u8 *src;
5482 size_t len;
5483 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
5484
5485 /* Ask kernel firmware_class module to get the boot firmware off disk.
5486 * request_firmware() is synchronous, file is in memory on return. */
5487 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
5488 if (ret < 0) {
5489 IWL_ERROR("%s firmware file req failed: Reason %d\n",
5490 name, ret);
5491 goto error;
5492 }
5493
5494 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
5495 name, ucode_raw->size);
5496
5497 /* Make sure that we got at least our header! */
5498 if (ucode_raw->size < sizeof(*ucode)) {
5499 IWL_ERROR("File size way too small!\n");
5500 ret = -EINVAL;
5501 goto err_release;
5502 }
5503
5504 /* Data from ucode file: header followed by uCode images */
5505 ucode = (void *)ucode_raw->data;
5506
5507 ver = le32_to_cpu(ucode->ver);
5508 inst_size = le32_to_cpu(ucode->inst_size);
5509 data_size = le32_to_cpu(ucode->data_size);
5510 init_size = le32_to_cpu(ucode->init_size);
5511 init_data_size = le32_to_cpu(ucode->init_data_size);
5512 boot_size = le32_to_cpu(ucode->boot_size);
5513
5514 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
5515 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
5516 inst_size);
5517 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
5518 data_size);
5519 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
5520 init_size);
5521 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
5522 init_data_size);
5523 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
5524 boot_size);
5525
5526 /* Verify size of file vs. image size info in file's header */
5527 if (ucode_raw->size < sizeof(*ucode) +
5528 inst_size + data_size + init_size +
5529 init_data_size + boot_size) {
5530
5531 IWL_DEBUG_INFO("uCode file size %d too small\n",
5532 (int)ucode_raw->size);
5533 ret = -EINVAL;
5534 goto err_release;
5535 }
5536
5537 /* Verify that uCode images will fit in card's SRAM */
5538 if (inst_size > IWL_MAX_INST_SIZE) {
5539 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
5540 inst_size);
5541 ret = -EINVAL;
5542 goto err_release;
5543 }
5544
5545 if (data_size > IWL_MAX_DATA_SIZE) {
5546 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
5547 data_size);
5548 ret = -EINVAL;
5549 goto err_release;
5550 }
5551 if (init_size > IWL_MAX_INST_SIZE) {
5552 IWL_DEBUG_INFO
5553 ("uCode init instr len %d too large to fit in\n",
5554 init_size);
5555 ret = -EINVAL;
5556 goto err_release;
5557 }
5558 if (init_data_size > IWL_MAX_DATA_SIZE) {
5559 IWL_DEBUG_INFO
5560 ("uCode init data len %d too large to fit in\n",
5561 init_data_size);
5562 ret = -EINVAL;
5563 goto err_release;
5564 }
5565 if (boot_size > IWL_MAX_BSM_SIZE) {
5566 IWL_DEBUG_INFO
5567 ("uCode boot instr len %d too large to fit in\n",
5568 boot_size);
5569 ret = -EINVAL;
5570 goto err_release;
5571 }
5572
5573 /* Allocate ucode buffers for card's bus-master loading ... */
5574
5575 /* Runtime instructions and 2 copies of data:
5576 * 1) unmodified from disk
5577 * 2) backup cache for save/restore during power-downs */
5578 priv->ucode_code.len = inst_size;
5579 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
5580
5581 priv->ucode_data.len = data_size;
5582 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
5583
5584 priv->ucode_data_backup.len = data_size;
5585 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5586
5587 /* Initialization instructions and data */
5588 if (init_size && init_data_size) {
5589 priv->ucode_init.len = init_size;
5590 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
5591
5592 priv->ucode_init_data.len = init_data_size;
5593 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5594
5595 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
5596 goto err_pci_alloc;
5597 }
5598
5599 /* Bootstrap (instructions only, no data) */
5600 if (boot_size) {
5601 priv->ucode_boot.len = boot_size;
5602 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
5603
5604 if (!priv->ucode_boot.v_addr)
5605 goto err_pci_alloc;
5606 }
5607
5608 /* Copy images into buffers for card's bus-master reads ... */
5609
5610 /* Runtime instructions (first block of data in file) */
5611 src = &ucode->data[0];
5612 len = priv->ucode_code.len;
5613 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
5614 memcpy(priv->ucode_code.v_addr, src, len);
5615 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
5616 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
5617
5618 /* Runtime data (2nd block)
5619 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
5620 src = &ucode->data[inst_size];
5621 len = priv->ucode_data.len;
5622 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
5623 memcpy(priv->ucode_data.v_addr, src, len);
5624 memcpy(priv->ucode_data_backup.v_addr, src, len);
5625
5626 /* Initialization instructions (3rd block) */
5627 if (init_size) {
5628 src = &ucode->data[inst_size + data_size];
5629 len = priv->ucode_init.len;
5630 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
5631 len);
5632 memcpy(priv->ucode_init.v_addr, src, len);
5633 }
5634
5635 /* Initialization data (4th block) */
5636 if (init_data_size) {
5637 src = &ucode->data[inst_size + data_size + init_size];
5638 len = priv->ucode_init_data.len;
5639 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
5640 len);
5641 memcpy(priv->ucode_init_data.v_addr, src, len);
5642 }
5643
5644 /* Bootstrap instructions (5th block) */
5645 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
5646 len = priv->ucode_boot.len;
5647 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
5648 memcpy(priv->ucode_boot.v_addr, src, len);
5649
5650 /* We have our copies now, allow OS release its copies */
5651 release_firmware(ucode_raw);
5652 return 0;
5653
5654 err_pci_alloc:
5655 IWL_ERROR("failed to allocate pci memory\n");
5656 ret = -ENOMEM;
5657 iwl4965_dealloc_ucode_pci(priv);
5658
5659 err_release:
5660 release_firmware(ucode_raw);
5661
5662 error:
5663 return ret;
5664 }
5665
5666
5667 /**
5668 * iwl4965_set_ucode_ptrs - Set uCode address location
5669 *
5670 * Tell initialization uCode where to find runtime uCode.
5671 *
5672 * BSM registers initially contain pointers to initialization uCode.
5673 * We need to replace them to load runtime uCode inst and data,
5674 * and to save runtime data when powering down.
5675 */
5676 static int iwl4965_set_ucode_ptrs(struct iwl_priv *priv)
5677 {
5678 dma_addr_t pinst;
5679 dma_addr_t pdata;
5680 int rc = 0;
5681 unsigned long flags;
5682
5683 /* bits 35:4 for 4965 */
5684 pinst = priv->ucode_code.p_addr >> 4;
5685 pdata = priv->ucode_data_backup.p_addr >> 4;
5686
5687 spin_lock_irqsave(&priv->lock, flags);
5688 rc = iwl4965_grab_nic_access(priv);
5689 if (rc) {
5690 spin_unlock_irqrestore(&priv->lock, flags);
5691 return rc;
5692 }
5693
5694 /* Tell bootstrap uCode where to find image to load */
5695 iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5696 iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5697 iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
5698 priv->ucode_data.len);
5699
5700 /* Inst bytecount must be last to set up, bit 31 signals uCode
5701 * that all new ptr/size info is in place */
5702 iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
5703 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
5704
5705 iwl4965_release_nic_access(priv);
5706
5707 spin_unlock_irqrestore(&priv->lock, flags);
5708
5709 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
5710
5711 return rc;
5712 }
5713
5714 /**
5715 * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
5716 *
5717 * Called after REPLY_ALIVE notification received from "initialize" uCode.
5718 *
5719 * The 4965 "initialize" ALIVE reply contains calibration data for:
5720 * Voltage, temperature, and MIMO tx gain correction, now stored in priv
5721 * (3945 does not contain this data).
5722 *
5723 * Tell "initialize" uCode to go ahead and load the runtime uCode.
5724 */
5725 static void iwl4965_init_alive_start(struct iwl_priv *priv)
5726 {
5727 /* Check alive response for "valid" sign from uCode */
5728 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
5729 /* We had an error bringing up the hardware, so take it
5730 * all the way back down so we can try again */
5731 IWL_DEBUG_INFO("Initialize Alive failed.\n");
5732 goto restart;
5733 }
5734
5735 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
5736 * This is a paranoid check, because we would not have gotten the
5737 * "initialize" alive if code weren't properly loaded. */
5738 if (iwl4965_verify_ucode(priv)) {
5739 /* Runtime instruction load was bad;
5740 * take it all the way back down so we can try again */
5741 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
5742 goto restart;
5743 }
5744
5745 /* Calculate temperature */
5746 priv->temperature = iwl4965_get_temperature(priv);
5747
5748 /* Send pointers to protocol/runtime uCode image ... init code will
5749 * load and launch runtime uCode, which will send us another "Alive"
5750 * notification. */
5751 IWL_DEBUG_INFO("Initialization Alive received.\n");
5752 if (iwl4965_set_ucode_ptrs(priv)) {
5753 /* Runtime instruction load won't happen;
5754 * take it all the way back down so we can try again */
5755 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
5756 goto restart;
5757 }
5758 return;
5759
5760 restart:
5761 queue_work(priv->workqueue, &priv->restart);
5762 }
5763
5764
5765 /**
5766 * iwl4965_alive_start - called after REPLY_ALIVE notification received
5767 * from protocol/runtime uCode (initialization uCode's
5768 * Alive gets handled by iwl4965_init_alive_start()).
5769 */
5770 static void iwl4965_alive_start(struct iwl_priv *priv)
5771 {
5772 int rc = 0;
5773
5774 IWL_DEBUG_INFO("Runtime Alive received.\n");
5775
5776 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
5777 /* We had an error bringing up the hardware, so take it
5778 * all the way back down so we can try again */
5779 IWL_DEBUG_INFO("Alive failed.\n");
5780 goto restart;
5781 }
5782
5783 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
5784 * This is a paranoid check, because we would not have gotten the
5785 * "runtime" alive if code weren't properly loaded. */
5786 if (iwl4965_verify_ucode(priv)) {
5787 /* Runtime instruction load was bad;
5788 * take it all the way back down so we can try again */
5789 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
5790 goto restart;
5791 }
5792
5793 iwlcore_clear_stations_table(priv);
5794
5795 rc = iwl4965_alive_notify(priv);
5796 if (rc) {
5797 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
5798 rc);
5799 goto restart;
5800 }
5801
5802 /* After the ALIVE response, we can send host commands to 4965 uCode */
5803 set_bit(STATUS_ALIVE, &priv->status);
5804
5805 /* Clear out the uCode error bit if it is set */
5806 clear_bit(STATUS_FW_ERROR, &priv->status);
5807
5808 if (iwl4965_is_rfkill(priv))
5809 return;
5810
5811 ieee80211_start_queues(priv->hw);
5812
5813 priv->active_rate = priv->rates_mask;
5814 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
5815
5816 iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
5817
5818 if (iwl4965_is_associated(priv)) {
5819 struct iwl4965_rxon_cmd *active_rxon =
5820 (struct iwl4965_rxon_cmd *)(&priv->active_rxon);
5821
5822 memcpy(&priv->staging_rxon, &priv->active_rxon,
5823 sizeof(priv->staging_rxon));
5824 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5825 } else {
5826 /* Initialize our rx_config data */
5827 iwl4965_connection_init_rx_config(priv);
5828 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
5829 }
5830
5831 /* Configure Bluetooth device coexistence support */
5832 iwl4965_send_bt_config(priv);
5833
5834 /* Configure the adapter for unassociated operation */
5835 iwl4965_commit_rxon(priv);
5836
5837 /* At this point, the NIC is initialized and operational */
5838 priv->notif_missed_beacons = 0;
5839 set_bit(STATUS_READY, &priv->status);
5840
5841 iwl4965_rf_kill_ct_config(priv);
5842
5843 IWL_DEBUG_INFO("ALIVE processing complete.\n");
5844 wake_up_interruptible(&priv->wait_command_queue);
5845
5846 if (priv->error_recovering)
5847 iwl4965_error_recovery(priv);
5848
5849 return;
5850
5851 restart:
5852 queue_work(priv->workqueue, &priv->restart);
5853 }
5854
5855 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv);
5856
5857 static void __iwl4965_down(struct iwl_priv *priv)
5858 {
5859 unsigned long flags;
5860 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
5861 struct ieee80211_conf *conf = NULL;
5862
5863 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
5864
5865 conf = ieee80211_get_hw_conf(priv->hw);
5866
5867 if (!exit_pending)
5868 set_bit(STATUS_EXIT_PENDING, &priv->status);
5869
5870 iwlcore_clear_stations_table(priv);
5871
5872 /* Unblock any waiting calls */
5873 wake_up_interruptible_all(&priv->wait_command_queue);
5874
5875 /* Wipe out the EXIT_PENDING status bit if we are not actually
5876 * exiting the module */
5877 if (!exit_pending)
5878 clear_bit(STATUS_EXIT_PENDING, &priv->status);
5879
5880 /* stop and reset the on-board processor */
5881 iwl4965_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
5882
5883 /* tell the device to stop sending interrupts */
5884 iwl4965_disable_interrupts(priv);
5885
5886 if (priv->mac80211_registered)
5887 ieee80211_stop_queues(priv->hw);
5888
5889 /* If we have not previously called iwl4965_init() then
5890 * clear all bits but the RF Kill and SUSPEND bits and return */
5891 if (!iwl4965_is_init(priv)) {
5892 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5893 STATUS_RF_KILL_HW |
5894 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5895 STATUS_RF_KILL_SW |
5896 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5897 STATUS_GEO_CONFIGURED |
5898 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5899 STATUS_IN_SUSPEND;
5900 goto exit;
5901 }
5902
5903 /* ...otherwise clear out all the status bits but the RF Kill and
5904 * SUSPEND bits and continue taking the NIC down. */
5905 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5906 STATUS_RF_KILL_HW |
5907 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5908 STATUS_RF_KILL_SW |
5909 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5910 STATUS_GEO_CONFIGURED |
5911 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5912 STATUS_IN_SUSPEND |
5913 test_bit(STATUS_FW_ERROR, &priv->status) <<
5914 STATUS_FW_ERROR;
5915
5916 spin_lock_irqsave(&priv->lock, flags);
5917 iwl4965_clear_bit(priv, CSR_GP_CNTRL,
5918 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
5919 spin_unlock_irqrestore(&priv->lock, flags);
5920
5921 iwl4965_hw_txq_ctx_stop(priv);
5922 iwl4965_hw_rxq_stop(priv);
5923
5924 spin_lock_irqsave(&priv->lock, flags);
5925 if (!iwl4965_grab_nic_access(priv)) {
5926 iwl4965_write_prph(priv, APMG_CLK_DIS_REG,
5927 APMG_CLK_VAL_DMA_CLK_RQT);
5928 iwl4965_release_nic_access(priv);
5929 }
5930 spin_unlock_irqrestore(&priv->lock, flags);
5931
5932 udelay(5);
5933
5934 iwl4965_hw_nic_stop_master(priv);
5935 iwl4965_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
5936 iwl4965_hw_nic_reset(priv);
5937
5938 exit:
5939 memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
5940
5941 if (priv->ibss_beacon)
5942 dev_kfree_skb(priv->ibss_beacon);
5943 priv->ibss_beacon = NULL;
5944
5945 /* clear out any free frames */
5946 iwl4965_clear_free_frames(priv);
5947 }
5948
5949 static void iwl4965_down(struct iwl_priv *priv)
5950 {
5951 mutex_lock(&priv->mutex);
5952 __iwl4965_down(priv);
5953 mutex_unlock(&priv->mutex);
5954
5955 iwl4965_cancel_deferred_work(priv);
5956 }
5957
5958 #define MAX_HW_RESTARTS 5
5959
5960 static int __iwl4965_up(struct iwl_priv *priv)
5961 {
5962 int rc, i;
5963
5964 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5965 IWL_WARNING("Exit pending; will not bring the NIC up\n");
5966 return -EIO;
5967 }
5968
5969 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
5970 IWL_WARNING("Radio disabled by SW RF kill (module "
5971 "parameter)\n");
5972 return -ENODEV;
5973 }
5974
5975 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
5976 IWL_ERROR("ucode not available for device bringup\n");
5977 return -EIO;
5978 }
5979
5980 /* If platform's RF_KILL switch is NOT set to KILL */
5981 if (iwl4965_read32(priv, CSR_GP_CNTRL) &
5982 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
5983 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5984 else {
5985 set_bit(STATUS_RF_KILL_HW, &priv->status);
5986 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
5987 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
5988 return -ENODEV;
5989 }
5990 }
5991
5992 iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
5993
5994 rc = iwl4965_hw_nic_init(priv);
5995 if (rc) {
5996 IWL_ERROR("Unable to int nic\n");
5997 return rc;
5998 }
5999
6000 /* make sure rfkill handshake bits are cleared */
6001 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6002 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
6003 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
6004
6005 /* clear (again), then enable host interrupts */
6006 iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
6007 iwl4965_enable_interrupts(priv);
6008
6009 /* really make sure rfkill handshake bits are cleared */
6010 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6011 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6012
6013 /* Copy original ucode data image from disk into backup cache.
6014 * This will be used to initialize the on-board processor's
6015 * data SRAM for a clean start when the runtime program first loads. */
6016 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
6017 priv->ucode_data.len);
6018
6019 /* We return success when we resume from suspend and rf_kill is on. */
6020 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
6021 return 0;
6022
6023 for (i = 0; i < MAX_HW_RESTARTS; i++) {
6024
6025 iwlcore_clear_stations_table(priv);
6026
6027 /* load bootstrap state machine,
6028 * load bootstrap program into processor's memory,
6029 * prepare to load the "initialize" uCode */
6030 rc = iwl4965_load_bsm(priv);
6031
6032 if (rc) {
6033 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
6034 continue;
6035 }
6036
6037 /* start card; "initialize" will load runtime ucode */
6038 iwl4965_nic_start(priv);
6039
6040 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
6041
6042 return 0;
6043 }
6044
6045 set_bit(STATUS_EXIT_PENDING, &priv->status);
6046 __iwl4965_down(priv);
6047
6048 /* tried to restart and config the device for as long as our
6049 * patience could withstand */
6050 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
6051 return -EIO;
6052 }
6053
6054
6055 /*****************************************************************************
6056 *
6057 * Workqueue callbacks
6058 *
6059 *****************************************************************************/
6060
6061 static void iwl4965_bg_init_alive_start(struct work_struct *data)
6062 {
6063 struct iwl_priv *priv =
6064 container_of(data, struct iwl_priv, init_alive_start.work);
6065
6066 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6067 return;
6068
6069 mutex_lock(&priv->mutex);
6070 iwl4965_init_alive_start(priv);
6071 mutex_unlock(&priv->mutex);
6072 }
6073
6074 static void iwl4965_bg_alive_start(struct work_struct *data)
6075 {
6076 struct iwl_priv *priv =
6077 container_of(data, struct iwl_priv, alive_start.work);
6078
6079 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6080 return;
6081
6082 mutex_lock(&priv->mutex);
6083 iwl4965_alive_start(priv);
6084 mutex_unlock(&priv->mutex);
6085 }
6086
6087 static void iwl4965_bg_rf_kill(struct work_struct *work)
6088 {
6089 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
6090
6091 wake_up_interruptible(&priv->wait_command_queue);
6092
6093 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6094 return;
6095
6096 mutex_lock(&priv->mutex);
6097
6098 if (!iwl4965_is_rfkill(priv)) {
6099 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
6100 "HW and/or SW RF Kill no longer active, restarting "
6101 "device\n");
6102 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6103 queue_work(priv->workqueue, &priv->restart);
6104 } else {
6105
6106 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6107 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6108 "disabled by SW switch\n");
6109 else
6110 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6111 "Kill switch must be turned off for "
6112 "wireless networking to work.\n");
6113 }
6114 mutex_unlock(&priv->mutex);
6115 }
6116
6117 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6118
6119 static void iwl4965_bg_scan_check(struct work_struct *data)
6120 {
6121 struct iwl_priv *priv =
6122 container_of(data, struct iwl_priv, scan_check.work);
6123
6124 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6125 return;
6126
6127 mutex_lock(&priv->mutex);
6128 if (test_bit(STATUS_SCANNING, &priv->status) ||
6129 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6130 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6131 "Scan completion watchdog resetting adapter (%dms)\n",
6132 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6133
6134 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6135 iwl4965_send_scan_abort(priv);
6136 }
6137 mutex_unlock(&priv->mutex);
6138 }
6139
6140 static void iwl4965_bg_request_scan(struct work_struct *data)
6141 {
6142 struct iwl_priv *priv =
6143 container_of(data, struct iwl_priv, request_scan);
6144 struct iwl4965_host_cmd cmd = {
6145 .id = REPLY_SCAN_CMD,
6146 .len = sizeof(struct iwl4965_scan_cmd),
6147 .meta.flags = CMD_SIZE_HUGE,
6148 };
6149 int rc = 0;
6150 struct iwl4965_scan_cmd *scan;
6151 struct ieee80211_conf *conf = NULL;
6152 u16 cmd_len;
6153 enum ieee80211_band band;
6154 u8 direct_mask;
6155
6156 conf = ieee80211_get_hw_conf(priv->hw);
6157
6158 mutex_lock(&priv->mutex);
6159
6160 if (!iwl4965_is_ready(priv)) {
6161 IWL_WARNING("request scan called when driver not ready.\n");
6162 goto done;
6163 }
6164
6165 /* Make sure the scan wasn't cancelled before this queued work
6166 * was given the chance to run... */
6167 if (!test_bit(STATUS_SCANNING, &priv->status))
6168 goto done;
6169
6170 /* This should never be called or scheduled if there is currently
6171 * a scan active in the hardware. */
6172 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6173 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6174 "Ignoring second request.\n");
6175 rc = -EIO;
6176 goto done;
6177 }
6178
6179 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6180 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6181 goto done;
6182 }
6183
6184 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6185 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
6186 goto done;
6187 }
6188
6189 if (iwl4965_is_rfkill(priv)) {
6190 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6191 goto done;
6192 }
6193
6194 if (!test_bit(STATUS_READY, &priv->status)) {
6195 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
6196 goto done;
6197 }
6198
6199 if (!priv->scan_bands) {
6200 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6201 goto done;
6202 }
6203
6204 if (!priv->scan) {
6205 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
6206 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
6207 if (!priv->scan) {
6208 rc = -ENOMEM;
6209 goto done;
6210 }
6211 }
6212 scan = priv->scan;
6213 memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
6214
6215 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6216 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6217
6218 if (iwl4965_is_associated(priv)) {
6219 u16 interval = 0;
6220 u32 extra;
6221 u32 suspend_time = 100;
6222 u32 scan_suspend_time = 100;
6223 unsigned long flags;
6224
6225 IWL_DEBUG_INFO("Scanning while associated...\n");
6226
6227 spin_lock_irqsave(&priv->lock, flags);
6228 interval = priv->beacon_int;
6229 spin_unlock_irqrestore(&priv->lock, flags);
6230
6231 scan->suspend_time = 0;
6232 scan->max_out_time = cpu_to_le32(200 * 1024);
6233 if (!interval)
6234 interval = suspend_time;
6235
6236 extra = (suspend_time / interval) << 22;
6237 scan_suspend_time = (extra |
6238 ((suspend_time % interval) * 1024));
6239 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6240 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6241 scan_suspend_time, interval);
6242 }
6243
6244 /* We should add the ability for user to lock to PASSIVE ONLY */
6245 if (priv->one_direct_scan) {
6246 IWL_DEBUG_SCAN
6247 ("Kicking off one direct scan for '%s'\n",
6248 iwl4965_escape_essid(priv->direct_ssid,
6249 priv->direct_ssid_len));
6250 scan->direct_scan[0].id = WLAN_EID_SSID;
6251 scan->direct_scan[0].len = priv->direct_ssid_len;
6252 memcpy(scan->direct_scan[0].ssid,
6253 priv->direct_ssid, priv->direct_ssid_len);
6254 direct_mask = 1;
6255 } else if (!iwl4965_is_associated(priv) && priv->essid_len) {
6256 scan->direct_scan[0].id = WLAN_EID_SSID;
6257 scan->direct_scan[0].len = priv->essid_len;
6258 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
6259 direct_mask = 1;
6260 } else
6261 direct_mask = 0;
6262
6263 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6264 scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6265 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6266
6267
6268 switch (priv->scan_bands) {
6269 case 2:
6270 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6271 scan->tx_cmd.rate_n_flags =
6272 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
6273 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
6274
6275 scan->good_CRC_th = 0;
6276 band = IEEE80211_BAND_2GHZ;
6277 break;
6278
6279 case 1:
6280 scan->tx_cmd.rate_n_flags =
6281 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
6282 RATE_MCS_ANT_B_MSK);
6283 scan->good_CRC_th = IWL_GOOD_CRC_TH;
6284 band = IEEE80211_BAND_5GHZ;
6285 break;
6286
6287 default:
6288 IWL_WARNING("Invalid scan band count\n");
6289 goto done;
6290 }
6291
6292 /* We don't build a direct scan probe request; the uCode will do
6293 * that based on the direct_mask added to each channel entry */
6294 cmd_len = iwl4965_fill_probe_req(priv, band,
6295 (struct ieee80211_mgmt *)scan->data,
6296 IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
6297
6298 scan->tx_cmd.len = cpu_to_le16(cmd_len);
6299 /* select Rx chains */
6300
6301 /* Force use of chains B and C (0x6) for scan Rx.
6302 * Avoid A (0x1) because of its off-channel reception on A-band.
6303 * MIMO is not used here, but value is required to make uCode happy. */
6304 scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
6305 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
6306 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
6307 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
6308
6309 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
6310 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
6311
6312 if (direct_mask) {
6313 IWL_DEBUG_SCAN
6314 ("Initiating direct scan for %s.\n",
6315 iwl4965_escape_essid(priv->essid, priv->essid_len));
6316 scan->channel_count =
6317 iwl4965_get_channels_for_scan(
6318 priv, band, 1, /* active */
6319 direct_mask,
6320 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6321 } else {
6322 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
6323 scan->channel_count =
6324 iwl4965_get_channels_for_scan(
6325 priv, band, 0, /* passive */
6326 direct_mask,
6327 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6328 }
6329
6330 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
6331 scan->channel_count * sizeof(struct iwl4965_scan_channel);
6332 cmd.data = scan;
6333 scan->len = cpu_to_le16(cmd.len);
6334
6335 set_bit(STATUS_SCAN_HW, &priv->status);
6336 rc = iwl4965_send_cmd_sync(priv, &cmd);
6337 if (rc)
6338 goto done;
6339
6340 queue_delayed_work(priv->workqueue, &priv->scan_check,
6341 IWL_SCAN_CHECK_WATCHDOG);
6342
6343 mutex_unlock(&priv->mutex);
6344 return;
6345
6346 done:
6347 /* inform mac80211 scan aborted */
6348 queue_work(priv->workqueue, &priv->scan_completed);
6349 mutex_unlock(&priv->mutex);
6350 }
6351
6352 static void iwl4965_bg_up(struct work_struct *data)
6353 {
6354 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
6355
6356 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6357 return;
6358
6359 mutex_lock(&priv->mutex);
6360 __iwl4965_up(priv);
6361 mutex_unlock(&priv->mutex);
6362 }
6363
6364 static void iwl4965_bg_restart(struct work_struct *data)
6365 {
6366 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
6367
6368 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6369 return;
6370
6371 iwl4965_down(priv);
6372 queue_work(priv->workqueue, &priv->up);
6373 }
6374
6375 static void iwl4965_bg_rx_replenish(struct work_struct *data)
6376 {
6377 struct iwl_priv *priv =
6378 container_of(data, struct iwl_priv, rx_replenish);
6379
6380 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6381 return;
6382
6383 mutex_lock(&priv->mutex);
6384 iwl4965_rx_replenish(priv);
6385 mutex_unlock(&priv->mutex);
6386 }
6387
6388 #define IWL_DELAY_NEXT_SCAN (HZ*2)
6389
6390 static void iwl4965_bg_post_associate(struct work_struct *data)
6391 {
6392 struct iwl_priv *priv = container_of(data, struct iwl_priv,
6393 post_associate.work);
6394
6395 int rc = 0;
6396 struct ieee80211_conf *conf = NULL;
6397 DECLARE_MAC_BUF(mac);
6398
6399 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6400 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
6401 return;
6402 }
6403
6404 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
6405 priv->assoc_id,
6406 print_mac(mac, priv->active_rxon.bssid_addr));
6407
6408
6409 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6410 return;
6411
6412 mutex_lock(&priv->mutex);
6413
6414 if (!priv->vif || !priv->is_open) {
6415 mutex_unlock(&priv->mutex);
6416 return;
6417 }
6418 iwl4965_scan_cancel_timeout(priv, 200);
6419
6420 conf = ieee80211_get_hw_conf(priv->hw);
6421
6422 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6423 iwl4965_commit_rxon(priv);
6424
6425 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
6426 iwl4965_setup_rxon_timing(priv);
6427 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6428 sizeof(priv->rxon_timing), &priv->rxon_timing);
6429 if (rc)
6430 IWL_WARNING("REPLY_RXON_TIMING failed - "
6431 "Attempting to continue.\n");
6432
6433 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6434
6435 #ifdef CONFIG_IWL4965_HT
6436 if (priv->current_ht_config.is_ht)
6437 iwl4965_set_rxon_ht(priv, &priv->current_ht_config);
6438 #endif /* CONFIG_IWL4965_HT*/
6439 iwl4965_set_rxon_chain(priv);
6440 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6441
6442 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6443 priv->assoc_id, priv->beacon_int);
6444
6445 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6446 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6447 else
6448 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6449
6450 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6451 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
6452 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
6453 else
6454 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6455
6456 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6457 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6458
6459 }
6460
6461 iwl4965_commit_rxon(priv);
6462
6463 switch (priv->iw_mode) {
6464 case IEEE80211_IF_TYPE_STA:
6465 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
6466 break;
6467
6468 case IEEE80211_IF_TYPE_IBSS:
6469
6470 /* clear out the station table */
6471 iwlcore_clear_stations_table(priv);
6472
6473 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
6474 iwl4965_rxon_add_station(priv, priv->bssid, 0);
6475 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
6476 iwl4965_send_beacon_cmd(priv);
6477
6478 break;
6479
6480 default:
6481 IWL_ERROR("%s Should not be called in %d mode\n",
6482 __FUNCTION__, priv->iw_mode);
6483 break;
6484 }
6485
6486 iwl4965_sequence_reset(priv);
6487
6488 #ifdef CONFIG_IWL4965_SENSITIVITY
6489 /* Enable Rx differential gain and sensitivity calibrations */
6490 iwl4965_chain_noise_reset(priv);
6491 priv->start_calib = 1;
6492 #endif /* CONFIG_IWL4965_SENSITIVITY */
6493
6494 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6495 priv->assoc_station_added = 1;
6496
6497 iwl4965_activate_qos(priv, 0);
6498
6499 /* we have just associated, don't start scan too early */
6500 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
6501 mutex_unlock(&priv->mutex);
6502 }
6503
6504 static void iwl4965_bg_abort_scan(struct work_struct *work)
6505 {
6506 struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
6507
6508 if (!iwl4965_is_ready(priv))
6509 return;
6510
6511 mutex_lock(&priv->mutex);
6512
6513 set_bit(STATUS_SCAN_ABORTING, &priv->status);
6514 iwl4965_send_scan_abort(priv);
6515
6516 mutex_unlock(&priv->mutex);
6517 }
6518
6519 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
6520
6521 static void iwl4965_bg_scan_completed(struct work_struct *work)
6522 {
6523 struct iwl_priv *priv =
6524 container_of(work, struct iwl_priv, scan_completed);
6525
6526 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
6527
6528 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6529 return;
6530
6531 if (test_bit(STATUS_CONF_PENDING, &priv->status))
6532 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
6533
6534 ieee80211_scan_completed(priv->hw);
6535
6536 /* Since setting the TXPOWER may have been deferred while
6537 * performing the scan, fire one off */
6538 mutex_lock(&priv->mutex);
6539 iwl4965_hw_reg_send_txpower(priv);
6540 mutex_unlock(&priv->mutex);
6541 }
6542
6543 /*****************************************************************************
6544 *
6545 * mac80211 entry point functions
6546 *
6547 *****************************************************************************/
6548
6549 #define UCODE_READY_TIMEOUT (2 * HZ)
6550
6551 static int iwl4965_mac_start(struct ieee80211_hw *hw)
6552 {
6553 struct iwl_priv *priv = hw->priv;
6554 int ret;
6555
6556 IWL_DEBUG_MAC80211("enter\n");
6557
6558 if (pci_enable_device(priv->pci_dev)) {
6559 IWL_ERROR("Fail to pci_enable_device\n");
6560 return -ENODEV;
6561 }
6562 pci_restore_state(priv->pci_dev);
6563 pci_enable_msi(priv->pci_dev);
6564
6565 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
6566 DRV_NAME, priv);
6567 if (ret) {
6568 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
6569 goto out_disable_msi;
6570 }
6571
6572 /* we should be verifying the device is ready to be opened */
6573 mutex_lock(&priv->mutex);
6574
6575 memset(&priv->staging_rxon, 0, sizeof(struct iwl4965_rxon_cmd));
6576 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
6577 * ucode filename and max sizes are card-specific. */
6578
6579 if (!priv->ucode_code.len) {
6580 ret = iwl4965_read_ucode(priv);
6581 if (ret) {
6582 IWL_ERROR("Could not read microcode: %d\n", ret);
6583 mutex_unlock(&priv->mutex);
6584 goto out_release_irq;
6585 }
6586 }
6587
6588 ret = __iwl4965_up(priv);
6589
6590 mutex_unlock(&priv->mutex);
6591
6592 if (ret)
6593 goto out_release_irq;
6594
6595 IWL_DEBUG_INFO("Start UP work done.\n");
6596
6597 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
6598 return 0;
6599
6600 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
6601 * mac80211 will not be run successfully. */
6602 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
6603 test_bit(STATUS_READY, &priv->status),
6604 UCODE_READY_TIMEOUT);
6605 if (!ret) {
6606 if (!test_bit(STATUS_READY, &priv->status)) {
6607 IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
6608 jiffies_to_msecs(UCODE_READY_TIMEOUT));
6609 ret = -ETIMEDOUT;
6610 goto out_release_irq;
6611 }
6612 }
6613
6614 priv->is_open = 1;
6615 IWL_DEBUG_MAC80211("leave\n");
6616 return 0;
6617
6618 out_release_irq:
6619 free_irq(priv->pci_dev->irq, priv);
6620 out_disable_msi:
6621 pci_disable_msi(priv->pci_dev);
6622 pci_disable_device(priv->pci_dev);
6623 priv->is_open = 0;
6624 IWL_DEBUG_MAC80211("leave - failed\n");
6625 return ret;
6626 }
6627
6628 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
6629 {
6630 struct iwl_priv *priv = hw->priv;
6631
6632 IWL_DEBUG_MAC80211("enter\n");
6633
6634 if (!priv->is_open) {
6635 IWL_DEBUG_MAC80211("leave - skip\n");
6636 return;
6637 }
6638
6639 priv->is_open = 0;
6640
6641 if (iwl4965_is_ready_rf(priv)) {
6642 /* stop mac, cancel any scan request and clear
6643 * RXON_FILTER_ASSOC_MSK BIT
6644 */
6645 mutex_lock(&priv->mutex);
6646 iwl4965_scan_cancel_timeout(priv, 100);
6647 cancel_delayed_work(&priv->post_associate);
6648 mutex_unlock(&priv->mutex);
6649 }
6650
6651 iwl4965_down(priv);
6652
6653 flush_workqueue(priv->workqueue);
6654 free_irq(priv->pci_dev->irq, priv);
6655 pci_disable_msi(priv->pci_dev);
6656 pci_save_state(priv->pci_dev);
6657 pci_disable_device(priv->pci_dev);
6658
6659 IWL_DEBUG_MAC80211("leave\n");
6660 }
6661
6662 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
6663 struct ieee80211_tx_control *ctl)
6664 {
6665 struct iwl_priv *priv = hw->priv;
6666
6667 IWL_DEBUG_MAC80211("enter\n");
6668
6669 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
6670 IWL_DEBUG_MAC80211("leave - monitor\n");
6671 return -1;
6672 }
6673
6674 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
6675 ctl->tx_rate->bitrate);
6676
6677 if (iwl4965_tx_skb(priv, skb, ctl))
6678 dev_kfree_skb_any(skb);
6679
6680 IWL_DEBUG_MAC80211("leave\n");
6681 return 0;
6682 }
6683
6684 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
6685 struct ieee80211_if_init_conf *conf)
6686 {
6687 struct iwl_priv *priv = hw->priv;
6688 unsigned long flags;
6689 DECLARE_MAC_BUF(mac);
6690
6691 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
6692
6693 if (priv->vif) {
6694 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
6695 return -EOPNOTSUPP;
6696 }
6697
6698 spin_lock_irqsave(&priv->lock, flags);
6699 priv->vif = conf->vif;
6700
6701 spin_unlock_irqrestore(&priv->lock, flags);
6702
6703 mutex_lock(&priv->mutex);
6704
6705 if (conf->mac_addr) {
6706 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
6707 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
6708 }
6709
6710 if (iwl4965_is_ready(priv))
6711 iwl4965_set_mode(priv, conf->type);
6712
6713 mutex_unlock(&priv->mutex);
6714
6715 IWL_DEBUG_MAC80211("leave\n");
6716 return 0;
6717 }
6718
6719 /**
6720 * iwl4965_mac_config - mac80211 config callback
6721 *
6722 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
6723 * be set inappropriately and the driver currently sets the hardware up to
6724 * use it whenever needed.
6725 */
6726 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
6727 {
6728 struct iwl_priv *priv = hw->priv;
6729 const struct iwl_channel_info *ch_info;
6730 unsigned long flags;
6731 int ret = 0;
6732
6733 mutex_lock(&priv->mutex);
6734 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
6735
6736 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
6737
6738 if (!iwl4965_is_ready(priv)) {
6739 IWL_DEBUG_MAC80211("leave - not ready\n");
6740 ret = -EIO;
6741 goto out;
6742 }
6743
6744 if (unlikely(!iwl4965_mod_params.disable_hw_scan &&
6745 test_bit(STATUS_SCANNING, &priv->status))) {
6746 IWL_DEBUG_MAC80211("leave - scanning\n");
6747 set_bit(STATUS_CONF_PENDING, &priv->status);
6748 mutex_unlock(&priv->mutex);
6749 return 0;
6750 }
6751
6752 spin_lock_irqsave(&priv->lock, flags);
6753
6754 ch_info = iwl4965_get_channel_info(priv, conf->channel->band,
6755 ieee80211_frequency_to_channel(conf->channel->center_freq));
6756 if (!is_channel_valid(ch_info)) {
6757 IWL_DEBUG_MAC80211("leave - invalid channel\n");
6758 spin_unlock_irqrestore(&priv->lock, flags);
6759 ret = -EINVAL;
6760 goto out;
6761 }
6762
6763 #ifdef CONFIG_IWL4965_HT
6764 /* if we are switching from ht to 2.4 clear flags
6765 * from any ht related info since 2.4 does not
6766 * support ht */
6767 if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
6768 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6769 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
6770 #endif
6771 )
6772 priv->staging_rxon.flags = 0;
6773 #endif /* CONFIG_IWL4965_HT */
6774
6775 iwlcore_set_rxon_channel(priv, conf->channel->band,
6776 ieee80211_frequency_to_channel(conf->channel->center_freq));
6777
6778 iwl4965_set_flags_for_phymode(priv, conf->channel->band);
6779
6780 /* The list of supported rates and rate mask can be different
6781 * for each band; since the band may have changed, reset
6782 * the rate mask to what mac80211 lists */
6783 iwl4965_set_rate(priv);
6784
6785 spin_unlock_irqrestore(&priv->lock, flags);
6786
6787 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6788 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
6789 iwl4965_hw_channel_switch(priv, conf->channel);
6790 goto out;
6791 }
6792 #endif
6793
6794 iwl4965_radio_kill_sw(priv, !conf->radio_enabled);
6795
6796 if (!conf->radio_enabled) {
6797 IWL_DEBUG_MAC80211("leave - radio disabled\n");
6798 goto out;
6799 }
6800
6801 if (iwl4965_is_rfkill(priv)) {
6802 IWL_DEBUG_MAC80211("leave - RF kill\n");
6803 ret = -EIO;
6804 goto out;
6805 }
6806
6807 iwl4965_set_rate(priv);
6808
6809 if (memcmp(&priv->active_rxon,
6810 &priv->staging_rxon, sizeof(priv->staging_rxon)))
6811 iwl4965_commit_rxon(priv);
6812 else
6813 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
6814
6815 IWL_DEBUG_MAC80211("leave\n");
6816
6817 out:
6818 clear_bit(STATUS_CONF_PENDING, &priv->status);
6819 mutex_unlock(&priv->mutex);
6820 return ret;
6821 }
6822
6823 static void iwl4965_config_ap(struct iwl_priv *priv)
6824 {
6825 int rc = 0;
6826
6827 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6828 return;
6829
6830 /* The following should be done only at AP bring up */
6831 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
6832
6833 /* RXON - unassoc (to set timing command) */
6834 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6835 iwl4965_commit_rxon(priv);
6836
6837 /* RXON Timing */
6838 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
6839 iwl4965_setup_rxon_timing(priv);
6840 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6841 sizeof(priv->rxon_timing), &priv->rxon_timing);
6842 if (rc)
6843 IWL_WARNING("REPLY_RXON_TIMING failed - "
6844 "Attempting to continue.\n");
6845
6846 iwl4965_set_rxon_chain(priv);
6847
6848 /* FIXME: what should be the assoc_id for AP? */
6849 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6850 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6851 priv->staging_rxon.flags |=
6852 RXON_FLG_SHORT_PREAMBLE_MSK;
6853 else
6854 priv->staging_rxon.flags &=
6855 ~RXON_FLG_SHORT_PREAMBLE_MSK;
6856
6857 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6858 if (priv->assoc_capability &
6859 WLAN_CAPABILITY_SHORT_SLOT_TIME)
6860 priv->staging_rxon.flags |=
6861 RXON_FLG_SHORT_SLOT_MSK;
6862 else
6863 priv->staging_rxon.flags &=
6864 ~RXON_FLG_SHORT_SLOT_MSK;
6865
6866 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6867 priv->staging_rxon.flags &=
6868 ~RXON_FLG_SHORT_SLOT_MSK;
6869 }
6870 /* restore RXON assoc */
6871 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6872 iwl4965_commit_rxon(priv);
6873 iwl4965_activate_qos(priv, 1);
6874 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
6875 }
6876 iwl4965_send_beacon_cmd(priv);
6877
6878 /* FIXME - we need to add code here to detect a totally new
6879 * configuration, reset the AP, unassoc, rxon timing, assoc,
6880 * clear sta table, add BCAST sta... */
6881 }
6882
6883 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
6884 struct ieee80211_vif *vif,
6885 struct ieee80211_if_conf *conf)
6886 {
6887 struct iwl_priv *priv = hw->priv;
6888 DECLARE_MAC_BUF(mac);
6889 unsigned long flags;
6890 int rc;
6891
6892 if (conf == NULL)
6893 return -EIO;
6894
6895 if (priv->vif != vif) {
6896 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
6897 mutex_unlock(&priv->mutex);
6898 return 0;
6899 }
6900
6901 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
6902 (!conf->beacon || !conf->ssid_len)) {
6903 IWL_DEBUG_MAC80211
6904 ("Leaving in AP mode because HostAPD is not ready.\n");
6905 return 0;
6906 }
6907
6908 if (!iwl4965_is_alive(priv))
6909 return -EAGAIN;
6910
6911 mutex_lock(&priv->mutex);
6912
6913 if (conf->bssid)
6914 IWL_DEBUG_MAC80211("bssid: %s\n",
6915 print_mac(mac, conf->bssid));
6916
6917 /*
6918 * very dubious code was here; the probe filtering flag is never set:
6919 *
6920 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
6921 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
6922 */
6923
6924 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6925 if (!conf->bssid) {
6926 conf->bssid = priv->mac_addr;
6927 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
6928 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
6929 print_mac(mac, conf->bssid));
6930 }
6931 if (priv->ibss_beacon)
6932 dev_kfree_skb(priv->ibss_beacon);
6933
6934 priv->ibss_beacon = conf->beacon;
6935 }
6936
6937 if (iwl4965_is_rfkill(priv))
6938 goto done;
6939
6940 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
6941 !is_multicast_ether_addr(conf->bssid)) {
6942 /* If there is currently a HW scan going on in the background
6943 * then we need to cancel it else the RXON below will fail. */
6944 if (iwl4965_scan_cancel_timeout(priv, 100)) {
6945 IWL_WARNING("Aborted scan still in progress "
6946 "after 100ms\n");
6947 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
6948 mutex_unlock(&priv->mutex);
6949 return -EAGAIN;
6950 }
6951 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
6952
6953 /* TODO: Audit driver for usage of these members and see
6954 * if mac80211 deprecates them (priv->bssid looks like it
6955 * shouldn't be there, but I haven't scanned the IBSS code
6956 * to verify) - jpk */
6957 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
6958
6959 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
6960 iwl4965_config_ap(priv);
6961 else {
6962 rc = iwl4965_commit_rxon(priv);
6963 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
6964 iwl4965_rxon_add_station(
6965 priv, priv->active_rxon.bssid_addr, 1);
6966 }
6967
6968 } else {
6969 iwl4965_scan_cancel_timeout(priv, 100);
6970 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6971 iwl4965_commit_rxon(priv);
6972 }
6973
6974 done:
6975 spin_lock_irqsave(&priv->lock, flags);
6976 if (!conf->ssid_len)
6977 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
6978 else
6979 memcpy(priv->essid, conf->ssid, conf->ssid_len);
6980
6981 priv->essid_len = conf->ssid_len;
6982 spin_unlock_irqrestore(&priv->lock, flags);
6983
6984 IWL_DEBUG_MAC80211("leave\n");
6985 mutex_unlock(&priv->mutex);
6986
6987 return 0;
6988 }
6989
6990 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
6991 unsigned int changed_flags,
6992 unsigned int *total_flags,
6993 int mc_count, struct dev_addr_list *mc_list)
6994 {
6995 /*
6996 * XXX: dummy
6997 * see also iwl4965_connection_init_rx_config
6998 */
6999 *total_flags = 0;
7000 }
7001
7002 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
7003 struct ieee80211_if_init_conf *conf)
7004 {
7005 struct iwl_priv *priv = hw->priv;
7006
7007 IWL_DEBUG_MAC80211("enter\n");
7008
7009 mutex_lock(&priv->mutex);
7010
7011 if (iwl4965_is_ready_rf(priv)) {
7012 iwl4965_scan_cancel_timeout(priv, 100);
7013 cancel_delayed_work(&priv->post_associate);
7014 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7015 iwl4965_commit_rxon(priv);
7016 }
7017 if (priv->vif == conf->vif) {
7018 priv->vif = NULL;
7019 memset(priv->bssid, 0, ETH_ALEN);
7020 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7021 priv->essid_len = 0;
7022 }
7023 mutex_unlock(&priv->mutex);
7024
7025 IWL_DEBUG_MAC80211("leave\n");
7026
7027 }
7028
7029 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
7030 struct ieee80211_vif *vif,
7031 struct ieee80211_bss_conf *bss_conf,
7032 u32 changes)
7033 {
7034 struct iwl_priv *priv = hw->priv;
7035
7036 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
7037 if (bss_conf->use_short_preamble)
7038 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
7039 else
7040 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
7041 }
7042
7043 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
7044 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
7045 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
7046 else
7047 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
7048 }
7049
7050 if (changes & BSS_CHANGED_ASSOC) {
7051 /*
7052 * TODO:
7053 * do stuff instead of sniffing assoc resp
7054 */
7055 }
7056
7057 if (iwl4965_is_associated(priv))
7058 iwl4965_send_rxon_assoc(priv);
7059 }
7060
7061 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
7062 {
7063 int rc = 0;
7064 unsigned long flags;
7065 struct iwl_priv *priv = hw->priv;
7066
7067 IWL_DEBUG_MAC80211("enter\n");
7068
7069 mutex_lock(&priv->mutex);
7070 spin_lock_irqsave(&priv->lock, flags);
7071
7072 if (!iwl4965_is_ready_rf(priv)) {
7073 rc = -EIO;
7074 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7075 goto out_unlock;
7076 }
7077
7078 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
7079 rc = -EIO;
7080 IWL_ERROR("ERROR: APs don't scan\n");
7081 goto out_unlock;
7082 }
7083
7084 /* we don't schedule scan within next_scan_jiffies period */
7085 if (priv->next_scan_jiffies &&
7086 time_after(priv->next_scan_jiffies, jiffies)) {
7087 rc = -EAGAIN;
7088 goto out_unlock;
7089 }
7090 /* if we just finished scan ask for delay */
7091 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
7092 IWL_DELAY_NEXT_SCAN, jiffies)) {
7093 rc = -EAGAIN;
7094 goto out_unlock;
7095 }
7096 if (len) {
7097 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
7098 iwl4965_escape_essid(ssid, len), (int)len);
7099
7100 priv->one_direct_scan = 1;
7101 priv->direct_ssid_len = (u8)
7102 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7103 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
7104 } else
7105 priv->one_direct_scan = 0;
7106
7107 rc = iwl4965_scan_initiate(priv);
7108
7109 IWL_DEBUG_MAC80211("leave\n");
7110
7111 out_unlock:
7112 spin_unlock_irqrestore(&priv->lock, flags);
7113 mutex_unlock(&priv->mutex);
7114
7115 return rc;
7116 }
7117
7118 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
7119 const u8 *local_addr, const u8 *addr,
7120 struct ieee80211_key_conf *key)
7121 {
7122 struct iwl_priv *priv = hw->priv;
7123 DECLARE_MAC_BUF(mac);
7124 int rc = 0;
7125 u8 sta_id;
7126
7127 IWL_DEBUG_MAC80211("enter\n");
7128
7129 if (!iwl4965_mod_params.hw_crypto) {
7130 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7131 return -EOPNOTSUPP;
7132 }
7133
7134 if (is_zero_ether_addr(addr))
7135 /* only support pairwise keys */
7136 return -EOPNOTSUPP;
7137
7138 sta_id = iwl4965_hw_find_station(priv, addr);
7139 if (sta_id == IWL_INVALID_STATION) {
7140 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7141 print_mac(mac, addr));
7142 return -EINVAL;
7143 }
7144
7145 mutex_lock(&priv->mutex);
7146
7147 iwl4965_scan_cancel_timeout(priv, 100);
7148
7149 switch (cmd) {
7150 case SET_KEY:
7151 rc = iwl4965_update_sta_key_info(priv, key, sta_id);
7152 if (!rc) {
7153 iwl4965_set_rxon_hwcrypto(priv, 1);
7154 iwl4965_commit_rxon(priv);
7155 key->hw_key_idx = sta_id;
7156 IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7157 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7158 }
7159 break;
7160 case DISABLE_KEY:
7161 rc = iwl4965_clear_sta_key_info(priv, sta_id);
7162 if (!rc) {
7163 iwl4965_set_rxon_hwcrypto(priv, 0);
7164 iwl4965_commit_rxon(priv);
7165 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7166 }
7167 break;
7168 default:
7169 rc = -EINVAL;
7170 }
7171
7172 IWL_DEBUG_MAC80211("leave\n");
7173 mutex_unlock(&priv->mutex);
7174
7175 return rc;
7176 }
7177
7178 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7179 const struct ieee80211_tx_queue_params *params)
7180 {
7181 struct iwl_priv *priv = hw->priv;
7182 unsigned long flags;
7183 int q;
7184
7185 IWL_DEBUG_MAC80211("enter\n");
7186
7187 if (!iwl4965_is_ready_rf(priv)) {
7188 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7189 return -EIO;
7190 }
7191
7192 if (queue >= AC_NUM) {
7193 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7194 return 0;
7195 }
7196
7197 if (!priv->qos_data.qos_enable) {
7198 priv->qos_data.qos_active = 0;
7199 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7200 return 0;
7201 }
7202 q = AC_NUM - 1 - queue;
7203
7204 spin_lock_irqsave(&priv->lock, flags);
7205
7206 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7207 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7208 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7209 priv->qos_data.def_qos_parm.ac[q].edca_txop =
7210 cpu_to_le16((params->txop * 32));
7211
7212 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7213 priv->qos_data.qos_active = 1;
7214
7215 spin_unlock_irqrestore(&priv->lock, flags);
7216
7217 mutex_lock(&priv->mutex);
7218 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7219 iwl4965_activate_qos(priv, 1);
7220 else if (priv->assoc_id && iwl4965_is_associated(priv))
7221 iwl4965_activate_qos(priv, 0);
7222
7223 mutex_unlock(&priv->mutex);
7224
7225 IWL_DEBUG_MAC80211("leave\n");
7226 return 0;
7227 }
7228
7229 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
7230 struct ieee80211_tx_queue_stats *stats)
7231 {
7232 struct iwl_priv *priv = hw->priv;
7233 int i, avail;
7234 struct iwl4965_tx_queue *txq;
7235 struct iwl4965_queue *q;
7236 unsigned long flags;
7237
7238 IWL_DEBUG_MAC80211("enter\n");
7239
7240 if (!iwl4965_is_ready_rf(priv)) {
7241 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7242 return -EIO;
7243 }
7244
7245 spin_lock_irqsave(&priv->lock, flags);
7246
7247 for (i = 0; i < AC_NUM; i++) {
7248 txq = &priv->txq[i];
7249 q = &txq->q;
7250 avail = iwl4965_queue_space(q);
7251
7252 stats->data[i].len = q->n_window - avail;
7253 stats->data[i].limit = q->n_window - q->high_mark;
7254 stats->data[i].count = q->n_window;
7255
7256 }
7257 spin_unlock_irqrestore(&priv->lock, flags);
7258
7259 IWL_DEBUG_MAC80211("leave\n");
7260
7261 return 0;
7262 }
7263
7264 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
7265 struct ieee80211_low_level_stats *stats)
7266 {
7267 IWL_DEBUG_MAC80211("enter\n");
7268 IWL_DEBUG_MAC80211("leave\n");
7269
7270 return 0;
7271 }
7272
7273 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
7274 {
7275 IWL_DEBUG_MAC80211("enter\n");
7276 IWL_DEBUG_MAC80211("leave\n");
7277
7278 return 0;
7279 }
7280
7281 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
7282 {
7283 struct iwl_priv *priv = hw->priv;
7284 unsigned long flags;
7285
7286 mutex_lock(&priv->mutex);
7287 IWL_DEBUG_MAC80211("enter\n");
7288
7289 priv->lq_mngr.lq_ready = 0;
7290 #ifdef CONFIG_IWL4965_HT
7291 spin_lock_irqsave(&priv->lock, flags);
7292 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
7293 spin_unlock_irqrestore(&priv->lock, flags);
7294 #endif /* CONFIG_IWL4965_HT */
7295
7296 iwlcore_reset_qos(priv);
7297
7298 cancel_delayed_work(&priv->post_associate);
7299
7300 spin_lock_irqsave(&priv->lock, flags);
7301 priv->assoc_id = 0;
7302 priv->assoc_capability = 0;
7303 priv->call_post_assoc_from_beacon = 0;
7304 priv->assoc_station_added = 0;
7305
7306 /* new association get rid of ibss beacon skb */
7307 if (priv->ibss_beacon)
7308 dev_kfree_skb(priv->ibss_beacon);
7309
7310 priv->ibss_beacon = NULL;
7311
7312 priv->beacon_int = priv->hw->conf.beacon_int;
7313 priv->timestamp1 = 0;
7314 priv->timestamp0 = 0;
7315 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
7316 priv->beacon_int = 0;
7317
7318 spin_unlock_irqrestore(&priv->lock, flags);
7319
7320 if (!iwl4965_is_ready_rf(priv)) {
7321 IWL_DEBUG_MAC80211("leave - not ready\n");
7322 mutex_unlock(&priv->mutex);
7323 return;
7324 }
7325
7326 /* we are restarting association process
7327 * clear RXON_FILTER_ASSOC_MSK bit
7328 */
7329 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
7330 iwl4965_scan_cancel_timeout(priv, 100);
7331 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7332 iwl4965_commit_rxon(priv);
7333 }
7334
7335 /* Per mac80211.h: This is only used in IBSS mode... */
7336 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7337
7338 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7339 mutex_unlock(&priv->mutex);
7340 return;
7341 }
7342
7343 priv->only_active_channel = 0;
7344
7345 iwl4965_set_rate(priv);
7346
7347 mutex_unlock(&priv->mutex);
7348
7349 IWL_DEBUG_MAC80211("leave\n");
7350 }
7351
7352 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
7353 struct ieee80211_tx_control *control)
7354 {
7355 struct iwl_priv *priv = hw->priv;
7356 unsigned long flags;
7357
7358 mutex_lock(&priv->mutex);
7359 IWL_DEBUG_MAC80211("enter\n");
7360
7361 if (!iwl4965_is_ready_rf(priv)) {
7362 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7363 mutex_unlock(&priv->mutex);
7364 return -EIO;
7365 }
7366
7367 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7368 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7369 mutex_unlock(&priv->mutex);
7370 return -EIO;
7371 }
7372
7373 spin_lock_irqsave(&priv->lock, flags);
7374
7375 if (priv->ibss_beacon)
7376 dev_kfree_skb(priv->ibss_beacon);
7377
7378 priv->ibss_beacon = skb;
7379
7380 priv->assoc_id = 0;
7381
7382 IWL_DEBUG_MAC80211("leave\n");
7383 spin_unlock_irqrestore(&priv->lock, flags);
7384
7385 iwlcore_reset_qos(priv);
7386
7387 queue_work(priv->workqueue, &priv->post_associate.work);
7388
7389 mutex_unlock(&priv->mutex);
7390
7391 return 0;
7392 }
7393
7394 #ifdef CONFIG_IWL4965_HT
7395
7396 static void iwl4965_ht_info_fill(struct ieee80211_conf *conf,
7397 struct iwl_priv *priv)
7398 {
7399 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
7400 struct ieee80211_ht_info *ht_conf = &conf->ht_conf;
7401 struct ieee80211_ht_bss_info *ht_bss_conf = &conf->ht_bss_conf;
7402
7403 IWL_DEBUG_MAC80211("enter: \n");
7404
7405 if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE)) {
7406 iwl_conf->is_ht = 0;
7407 return;
7408 }
7409
7410 iwl_conf->is_ht = 1;
7411 priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
7412
7413 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
7414 iwl_conf->sgf |= 0x1;
7415 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
7416 iwl_conf->sgf |= 0x2;
7417
7418 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
7419 iwl_conf->max_amsdu_size =
7420 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
7421
7422 iwl_conf->supported_chan_width =
7423 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
7424 iwl_conf->extension_chan_offset =
7425 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
7426 /* If no above or below channel supplied disable FAT channel */
7427 if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
7428 iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
7429 iwl_conf->supported_chan_width = 0;
7430
7431 iwl_conf->tx_mimo_ps_mode =
7432 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
7433 memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
7434
7435 iwl_conf->control_channel = ht_bss_conf->primary_channel;
7436 iwl_conf->tx_chan_width =
7437 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
7438 iwl_conf->ht_protection =
7439 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
7440 iwl_conf->non_GF_STA_present =
7441 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
7442
7443 IWL_DEBUG_MAC80211("control channel %d\n",
7444 iwl_conf->control_channel);
7445 IWL_DEBUG_MAC80211("leave\n");
7446 }
7447
7448 static int iwl4965_mac_conf_ht(struct ieee80211_hw *hw,
7449 struct ieee80211_conf *conf)
7450 {
7451 struct iwl_priv *priv = hw->priv;
7452
7453 IWL_DEBUG_MAC80211("enter: \n");
7454
7455 iwl4965_ht_info_fill(conf, priv);
7456 iwl4965_set_rxon_chain(priv);
7457
7458 if (priv && priv->assoc_id &&
7459 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
7460 unsigned long flags;
7461
7462 spin_lock_irqsave(&priv->lock, flags);
7463 if (priv->beacon_int)
7464 queue_work(priv->workqueue, &priv->post_associate.work);
7465 else
7466 priv->call_post_assoc_from_beacon = 1;
7467 spin_unlock_irqrestore(&priv->lock, flags);
7468 }
7469
7470 IWL_DEBUG_MAC80211("leave:\n");
7471 return 0;
7472 }
7473
7474 #endif /*CONFIG_IWL4965_HT*/
7475
7476 /*****************************************************************************
7477 *
7478 * sysfs attributes
7479 *
7480 *****************************************************************************/
7481
7482 #ifdef CONFIG_IWLWIFI_DEBUG
7483
7484 /*
7485 * The following adds a new attribute to the sysfs representation
7486 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
7487 * used for controlling the debug level.
7488 *
7489 * See the level definitions in iwl for details.
7490 */
7491
7492 static ssize_t show_debug_level(struct device_driver *d, char *buf)
7493 {
7494 return sprintf(buf, "0x%08X\n", iwl_debug_level);
7495 }
7496 static ssize_t store_debug_level(struct device_driver *d,
7497 const char *buf, size_t count)
7498 {
7499 char *p = (char *)buf;
7500 u32 val;
7501
7502 val = simple_strtoul(p, &p, 0);
7503 if (p == buf)
7504 printk(KERN_INFO DRV_NAME
7505 ": %s is not in hex or decimal form.\n", buf);
7506 else
7507 iwl_debug_level = val;
7508
7509 return strnlen(buf, count);
7510 }
7511
7512 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
7513 show_debug_level, store_debug_level);
7514
7515 #endif /* CONFIG_IWLWIFI_DEBUG */
7516
7517 static ssize_t show_rf_kill(struct device *d,
7518 struct device_attribute *attr, char *buf)
7519 {
7520 /*
7521 * 0 - RF kill not enabled
7522 * 1 - SW based RF kill active (sysfs)
7523 * 2 - HW based RF kill active
7524 * 3 - Both HW and SW based RF kill active
7525 */
7526 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7527 int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
7528 (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
7529
7530 return sprintf(buf, "%i\n", val);
7531 }
7532
7533 static ssize_t store_rf_kill(struct device *d,
7534 struct device_attribute *attr,
7535 const char *buf, size_t count)
7536 {
7537 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7538
7539 mutex_lock(&priv->mutex);
7540 iwl4965_radio_kill_sw(priv, buf[0] == '1');
7541 mutex_unlock(&priv->mutex);
7542
7543 return count;
7544 }
7545
7546 static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
7547
7548 static ssize_t show_temperature(struct device *d,
7549 struct device_attribute *attr, char *buf)
7550 {
7551 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7552
7553 if (!iwl4965_is_alive(priv))
7554 return -EAGAIN;
7555
7556 return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
7557 }
7558
7559 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
7560
7561 static ssize_t show_rs_window(struct device *d,
7562 struct device_attribute *attr,
7563 char *buf)
7564 {
7565 struct iwl_priv *priv = d->driver_data;
7566 return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
7567 }
7568 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
7569
7570 static ssize_t show_tx_power(struct device *d,
7571 struct device_attribute *attr, char *buf)
7572 {
7573 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7574 return sprintf(buf, "%d\n", priv->user_txpower_limit);
7575 }
7576
7577 static ssize_t store_tx_power(struct device *d,
7578 struct device_attribute *attr,
7579 const char *buf, size_t count)
7580 {
7581 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7582 char *p = (char *)buf;
7583 u32 val;
7584
7585 val = simple_strtoul(p, &p, 10);
7586 if (p == buf)
7587 printk(KERN_INFO DRV_NAME
7588 ": %s is not in decimal form.\n", buf);
7589 else
7590 iwl4965_hw_reg_set_txpower(priv, val);
7591
7592 return count;
7593 }
7594
7595 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
7596
7597 static ssize_t show_flags(struct device *d,
7598 struct device_attribute *attr, char *buf)
7599 {
7600 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7601
7602 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
7603 }
7604
7605 static ssize_t store_flags(struct device *d,
7606 struct device_attribute *attr,
7607 const char *buf, size_t count)
7608 {
7609 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7610 u32 flags = simple_strtoul(buf, NULL, 0);
7611
7612 mutex_lock(&priv->mutex);
7613 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
7614 /* Cancel any currently running scans... */
7615 if (iwl4965_scan_cancel_timeout(priv, 100))
7616 IWL_WARNING("Could not cancel scan.\n");
7617 else {
7618 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
7619 flags);
7620 priv->staging_rxon.flags = cpu_to_le32(flags);
7621 iwl4965_commit_rxon(priv);
7622 }
7623 }
7624 mutex_unlock(&priv->mutex);
7625
7626 return count;
7627 }
7628
7629 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
7630
7631 static ssize_t show_filter_flags(struct device *d,
7632 struct device_attribute *attr, char *buf)
7633 {
7634 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7635
7636 return sprintf(buf, "0x%04X\n",
7637 le32_to_cpu(priv->active_rxon.filter_flags));
7638 }
7639
7640 static ssize_t store_filter_flags(struct device *d,
7641 struct device_attribute *attr,
7642 const char *buf, size_t count)
7643 {
7644 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7645 u32 filter_flags = simple_strtoul(buf, NULL, 0);
7646
7647 mutex_lock(&priv->mutex);
7648 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
7649 /* Cancel any currently running scans... */
7650 if (iwl4965_scan_cancel_timeout(priv, 100))
7651 IWL_WARNING("Could not cancel scan.\n");
7652 else {
7653 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7654 "0x%04X\n", filter_flags);
7655 priv->staging_rxon.filter_flags =
7656 cpu_to_le32(filter_flags);
7657 iwl4965_commit_rxon(priv);
7658 }
7659 }
7660 mutex_unlock(&priv->mutex);
7661
7662 return count;
7663 }
7664
7665 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
7666 store_filter_flags);
7667
7668 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
7669
7670 static ssize_t show_measurement(struct device *d,
7671 struct device_attribute *attr, char *buf)
7672 {
7673 struct iwl_priv *priv = dev_get_drvdata(d);
7674 struct iwl4965_spectrum_notification measure_report;
7675 u32 size = sizeof(measure_report), len = 0, ofs = 0;
7676 u8 *data = (u8 *) & measure_report;
7677 unsigned long flags;
7678
7679 spin_lock_irqsave(&priv->lock, flags);
7680 if (!(priv->measurement_status & MEASUREMENT_READY)) {
7681 spin_unlock_irqrestore(&priv->lock, flags);
7682 return 0;
7683 }
7684 memcpy(&measure_report, &priv->measure_report, size);
7685 priv->measurement_status = 0;
7686 spin_unlock_irqrestore(&priv->lock, flags);
7687
7688 while (size && (PAGE_SIZE - len)) {
7689 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7690 PAGE_SIZE - len, 1);
7691 len = strlen(buf);
7692 if (PAGE_SIZE - len)
7693 buf[len++] = '\n';
7694
7695 ofs += 16;
7696 size -= min(size, 16U);
7697 }
7698
7699 return len;
7700 }
7701
7702 static ssize_t store_measurement(struct device *d,
7703 struct device_attribute *attr,
7704 const char *buf, size_t count)
7705 {
7706 struct iwl_priv *priv = dev_get_drvdata(d);
7707 struct ieee80211_measurement_params params = {
7708 .channel = le16_to_cpu(priv->active_rxon.channel),
7709 .start_time = cpu_to_le64(priv->last_tsf),
7710 .duration = cpu_to_le16(1),
7711 };
7712 u8 type = IWL_MEASURE_BASIC;
7713 u8 buffer[32];
7714 u8 channel;
7715
7716 if (count) {
7717 char *p = buffer;
7718 strncpy(buffer, buf, min(sizeof(buffer), count));
7719 channel = simple_strtoul(p, NULL, 0);
7720 if (channel)
7721 params.channel = channel;
7722
7723 p = buffer;
7724 while (*p && *p != ' ')
7725 p++;
7726 if (*p)
7727 type = simple_strtoul(p + 1, NULL, 0);
7728 }
7729
7730 IWL_DEBUG_INFO("Invoking measurement of type %d on "
7731 "channel %d (for '%s')\n", type, params.channel, buf);
7732 iwl4965_get_measurement(priv, &params, type);
7733
7734 return count;
7735 }
7736
7737 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
7738 show_measurement, store_measurement);
7739 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
7740
7741 static ssize_t store_retry_rate(struct device *d,
7742 struct device_attribute *attr,
7743 const char *buf, size_t count)
7744 {
7745 struct iwl_priv *priv = dev_get_drvdata(d);
7746
7747 priv->retry_rate = simple_strtoul(buf, NULL, 0);
7748 if (priv->retry_rate <= 0)
7749 priv->retry_rate = 1;
7750
7751 return count;
7752 }
7753
7754 static ssize_t show_retry_rate(struct device *d,
7755 struct device_attribute *attr, char *buf)
7756 {
7757 struct iwl_priv *priv = dev_get_drvdata(d);
7758 return sprintf(buf, "%d", priv->retry_rate);
7759 }
7760
7761 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
7762 store_retry_rate);
7763
7764 static ssize_t store_power_level(struct device *d,
7765 struct device_attribute *attr,
7766 const char *buf, size_t count)
7767 {
7768 struct iwl_priv *priv = dev_get_drvdata(d);
7769 int rc;
7770 int mode;
7771
7772 mode = simple_strtoul(buf, NULL, 0);
7773 mutex_lock(&priv->mutex);
7774
7775 if (!iwl4965_is_ready(priv)) {
7776 rc = -EAGAIN;
7777 goto out;
7778 }
7779
7780 if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
7781 mode = IWL_POWER_AC;
7782 else
7783 mode |= IWL_POWER_ENABLED;
7784
7785 if (mode != priv->power_mode) {
7786 rc = iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(mode));
7787 if (rc) {
7788 IWL_DEBUG_MAC80211("failed setting power mode.\n");
7789 goto out;
7790 }
7791 priv->power_mode = mode;
7792 }
7793
7794 rc = count;
7795
7796 out:
7797 mutex_unlock(&priv->mutex);
7798 return rc;
7799 }
7800
7801 #define MAX_WX_STRING 80
7802
7803 /* Values are in microsecond */
7804 static const s32 timeout_duration[] = {
7805 350000,
7806 250000,
7807 75000,
7808 37000,
7809 25000,
7810 };
7811 static const s32 period_duration[] = {
7812 400000,
7813 700000,
7814 1000000,
7815 1000000,
7816 1000000
7817 };
7818
7819 static ssize_t show_power_level(struct device *d,
7820 struct device_attribute *attr, char *buf)
7821 {
7822 struct iwl_priv *priv = dev_get_drvdata(d);
7823 int level = IWL_POWER_LEVEL(priv->power_mode);
7824 char *p = buf;
7825
7826 p += sprintf(p, "%d ", level);
7827 switch (level) {
7828 case IWL_POWER_MODE_CAM:
7829 case IWL_POWER_AC:
7830 p += sprintf(p, "(AC)");
7831 break;
7832 case IWL_POWER_BATTERY:
7833 p += sprintf(p, "(BATTERY)");
7834 break;
7835 default:
7836 p += sprintf(p,
7837 "(Timeout %dms, Period %dms)",
7838 timeout_duration[level - 1] / 1000,
7839 period_duration[level - 1] / 1000);
7840 }
7841
7842 if (!(priv->power_mode & IWL_POWER_ENABLED))
7843 p += sprintf(p, " OFF\n");
7844 else
7845 p += sprintf(p, " \n");
7846
7847 return (p - buf + 1);
7848
7849 }
7850
7851 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
7852 store_power_level);
7853
7854 static ssize_t show_channels(struct device *d,
7855 struct device_attribute *attr, char *buf)
7856 {
7857 /* all this shit doesn't belong into sysfs anyway */
7858 return 0;
7859 }
7860
7861 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
7862
7863 static ssize_t show_statistics(struct device *d,
7864 struct device_attribute *attr, char *buf)
7865 {
7866 struct iwl_priv *priv = dev_get_drvdata(d);
7867 u32 size = sizeof(struct iwl4965_notif_statistics);
7868 u32 len = 0, ofs = 0;
7869 u8 *data = (u8 *) & priv->statistics;
7870 int rc = 0;
7871
7872 if (!iwl4965_is_alive(priv))
7873 return -EAGAIN;
7874
7875 mutex_lock(&priv->mutex);
7876 rc = iwl4965_send_statistics_request(priv);
7877 mutex_unlock(&priv->mutex);
7878
7879 if (rc) {
7880 len = sprintf(buf,
7881 "Error sending statistics request: 0x%08X\n", rc);
7882 return len;
7883 }
7884
7885 while (size && (PAGE_SIZE - len)) {
7886 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7887 PAGE_SIZE - len, 1);
7888 len = strlen(buf);
7889 if (PAGE_SIZE - len)
7890 buf[len++] = '\n';
7891
7892 ofs += 16;
7893 size -= min(size, 16U);
7894 }
7895
7896 return len;
7897 }
7898
7899 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
7900
7901 static ssize_t show_antenna(struct device *d,
7902 struct device_attribute *attr, char *buf)
7903 {
7904 struct iwl_priv *priv = dev_get_drvdata(d);
7905
7906 if (!iwl4965_is_alive(priv))
7907 return -EAGAIN;
7908
7909 return sprintf(buf, "%d\n", priv->antenna);
7910 }
7911
7912 static ssize_t store_antenna(struct device *d,
7913 struct device_attribute *attr,
7914 const char *buf, size_t count)
7915 {
7916 int ant;
7917 struct iwl_priv *priv = dev_get_drvdata(d);
7918
7919 if (count == 0)
7920 return 0;
7921
7922 if (sscanf(buf, "%1i", &ant) != 1) {
7923 IWL_DEBUG_INFO("not in hex or decimal form.\n");
7924 return count;
7925 }
7926
7927 if ((ant >= 0) && (ant <= 2)) {
7928 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
7929 priv->antenna = (enum iwl4965_antenna)ant;
7930 } else
7931 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
7932
7933
7934 return count;
7935 }
7936
7937 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
7938
7939 static ssize_t show_status(struct device *d,
7940 struct device_attribute *attr, char *buf)
7941 {
7942 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7943 if (!iwl4965_is_alive(priv))
7944 return -EAGAIN;
7945 return sprintf(buf, "0x%08x\n", (int)priv->status);
7946 }
7947
7948 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
7949
7950 static ssize_t dump_error_log(struct device *d,
7951 struct device_attribute *attr,
7952 const char *buf, size_t count)
7953 {
7954 char *p = (char *)buf;
7955
7956 if (p[0] == '1')
7957 iwl4965_dump_nic_error_log((struct iwl_priv *)d->driver_data);
7958
7959 return strnlen(buf, count);
7960 }
7961
7962 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
7963
7964 static ssize_t dump_event_log(struct device *d,
7965 struct device_attribute *attr,
7966 const char *buf, size_t count)
7967 {
7968 char *p = (char *)buf;
7969
7970 if (p[0] == '1')
7971 iwl4965_dump_nic_event_log((struct iwl_priv *)d->driver_data);
7972
7973 return strnlen(buf, count);
7974 }
7975
7976 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
7977
7978 /*****************************************************************************
7979 *
7980 * driver setup and teardown
7981 *
7982 *****************************************************************************/
7983
7984 static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
7985 {
7986 priv->workqueue = create_workqueue(DRV_NAME);
7987
7988 init_waitqueue_head(&priv->wait_command_queue);
7989
7990 INIT_WORK(&priv->up, iwl4965_bg_up);
7991 INIT_WORK(&priv->restart, iwl4965_bg_restart);
7992 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
7993 INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
7994 INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
7995 INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
7996 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
7997 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
7998 INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
7999 INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
8000 INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
8001 INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
8002
8003 iwl4965_hw_setup_deferred_work(priv);
8004
8005 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
8006 iwl4965_irq_tasklet, (unsigned long)priv);
8007 }
8008
8009 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
8010 {
8011 iwl4965_hw_cancel_deferred_work(priv);
8012
8013 cancel_delayed_work_sync(&priv->init_alive_start);
8014 cancel_delayed_work(&priv->scan_check);
8015 cancel_delayed_work(&priv->alive_start);
8016 cancel_delayed_work(&priv->post_associate);
8017 cancel_work_sync(&priv->beacon_update);
8018 }
8019
8020 static struct attribute *iwl4965_sysfs_entries[] = {
8021 &dev_attr_antenna.attr,
8022 &dev_attr_channels.attr,
8023 &dev_attr_dump_errors.attr,
8024 &dev_attr_dump_events.attr,
8025 &dev_attr_flags.attr,
8026 &dev_attr_filter_flags.attr,
8027 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
8028 &dev_attr_measurement.attr,
8029 #endif
8030 &dev_attr_power_level.attr,
8031 &dev_attr_retry_rate.attr,
8032 &dev_attr_rf_kill.attr,
8033 &dev_attr_rs_window.attr,
8034 &dev_attr_statistics.attr,
8035 &dev_attr_status.attr,
8036 &dev_attr_temperature.attr,
8037 &dev_attr_tx_power.attr,
8038
8039 NULL
8040 };
8041
8042 static struct attribute_group iwl4965_attribute_group = {
8043 .name = NULL, /* put in device directory */
8044 .attrs = iwl4965_sysfs_entries,
8045 };
8046
8047 static struct ieee80211_ops iwl4965_hw_ops = {
8048 .tx = iwl4965_mac_tx,
8049 .start = iwl4965_mac_start,
8050 .stop = iwl4965_mac_stop,
8051 .add_interface = iwl4965_mac_add_interface,
8052 .remove_interface = iwl4965_mac_remove_interface,
8053 .config = iwl4965_mac_config,
8054 .config_interface = iwl4965_mac_config_interface,
8055 .configure_filter = iwl4965_configure_filter,
8056 .set_key = iwl4965_mac_set_key,
8057 .get_stats = iwl4965_mac_get_stats,
8058 .get_tx_stats = iwl4965_mac_get_tx_stats,
8059 .conf_tx = iwl4965_mac_conf_tx,
8060 .get_tsf = iwl4965_mac_get_tsf,
8061 .reset_tsf = iwl4965_mac_reset_tsf,
8062 .beacon_update = iwl4965_mac_beacon_update,
8063 .bss_info_changed = iwl4965_bss_info_changed,
8064 #ifdef CONFIG_IWL4965_HT
8065 .conf_ht = iwl4965_mac_conf_ht,
8066 .ampdu_action = iwl4965_mac_ampdu_action,
8067 #endif /* CONFIG_IWL4965_HT */
8068 .hw_scan = iwl4965_mac_hw_scan
8069 };
8070
8071 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8072 {
8073 int err = 0;
8074 struct iwl_priv *priv;
8075 struct ieee80211_hw *hw;
8076 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
8077 DECLARE_MAC_BUF(mac);
8078
8079 /************************
8080 * 1. Allocating HW data
8081 ************************/
8082
8083 /* Disabling hardware scan means that mac80211 will perform scans
8084 * "the hard way", rather than using device's scan. */
8085 if (iwl4965_mod_params.disable_hw_scan) {
8086 IWL_DEBUG_INFO("Disabling hw_scan\n");
8087 iwl4965_hw_ops.hw_scan = NULL;
8088 }
8089
8090 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
8091 if (!hw) {
8092 err = -ENOMEM;
8093 goto out;
8094 }
8095 priv = hw->priv;
8096 /* At this point both hw and priv are allocated. */
8097
8098 SET_IEEE80211_DEV(hw, &pdev->dev);
8099
8100 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
8101 priv->cfg = cfg;
8102 priv->pci_dev = pdev;
8103
8104 #ifdef CONFIG_IWLWIFI_DEBUG
8105 iwl_debug_level = iwl4965_mod_params.debug;
8106 atomic_set(&priv->restrict_refcnt, 0);
8107 #endif
8108
8109 /**************************
8110 * 2. Initializing PCI bus
8111 **************************/
8112 if (pci_enable_device(pdev)) {
8113 err = -ENODEV;
8114 goto out_ieee80211_free_hw;
8115 }
8116
8117 pci_set_master(pdev);
8118
8119 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
8120 if (!err)
8121 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
8122 if (err) {
8123 printk(KERN_WARNING DRV_NAME
8124 ": No suitable DMA available.\n");
8125 goto out_pci_disable_device;
8126 }
8127
8128 err = pci_request_regions(pdev, DRV_NAME);
8129 if (err)
8130 goto out_pci_disable_device;
8131
8132 pci_set_drvdata(pdev, priv);
8133
8134 /* We disable the RETRY_TIMEOUT register (0x41) to keep
8135 * PCI Tx retries from interfering with C3 CPU state */
8136 pci_write_config_byte(pdev, 0x41, 0x00);
8137
8138 /***********************
8139 * 3. Read REV register
8140 ***********************/
8141 priv->hw_base = pci_iomap(pdev, 0, 0);
8142 if (!priv->hw_base) {
8143 err = -ENODEV;
8144 goto out_pci_release_regions;
8145 }
8146
8147 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
8148 (unsigned long long) pci_resource_len(pdev, 0));
8149 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
8150
8151 printk(KERN_INFO DRV_NAME
8152 ": Detected Intel Wireless WiFi Link %s\n", priv->cfg->name);
8153
8154 /*****************
8155 * 4. Read EEPROM
8156 *****************/
8157 /* nic init */
8158 iwl4965_set_bit(priv, CSR_GIO_CHICKEN_BITS,
8159 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
8160
8161 iwl4965_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
8162 err = iwl4965_poll_bit(priv, CSR_GP_CNTRL,
8163 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
8164 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
8165 if (err < 0) {
8166 IWL_DEBUG_INFO("Failed to init the card\n");
8167 goto out_iounmap;
8168 }
8169 /* Read the EEPROM */
8170 err = iwl_eeprom_init(priv);
8171 if (err) {
8172 IWL_ERROR("Unable to init EEPROM\n");
8173 goto out_iounmap;
8174 }
8175 /* MAC Address location in EEPROM same for 3945/4965 */
8176 iwl_eeprom_get_mac(priv, priv->mac_addr);
8177 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
8178 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
8179
8180 /************************
8181 * 5. Setup HW constants
8182 ************************/
8183 /* Device-specific setup */
8184 if (iwl4965_hw_set_hw_setting(priv)) {
8185 IWL_ERROR("failed to set hw settings\n");
8186 goto out_iounmap;
8187 }
8188
8189 /*******************
8190 * 6. Setup hw/priv
8191 *******************/
8192
8193 err = iwl_setup(priv);
8194 if (err)
8195 goto out_unset_hw_settings;
8196 /* At this point both hw and priv are initialized. */
8197
8198 /**********************************
8199 * 7. Initialize module parameters
8200 **********************************/
8201
8202 /* Disable radio (SW RF KILL) via parameter when loading driver */
8203 if (iwl4965_mod_params.disable) {
8204 set_bit(STATUS_RF_KILL_SW, &priv->status);
8205 IWL_DEBUG_INFO("Radio disabled.\n");
8206 }
8207
8208 if (iwl4965_mod_params.enable_qos)
8209 priv->qos_data.qos_enable = 1;
8210
8211 /********************
8212 * 8. Setup services
8213 ********************/
8214 iwl4965_disable_interrupts(priv);
8215
8216 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8217 if (err) {
8218 IWL_ERROR("failed to create sysfs device attributes\n");
8219 goto out_unset_hw_settings;
8220 }
8221
8222 err = iwl_dbgfs_register(priv, DRV_NAME);
8223 if (err) {
8224 IWL_ERROR("failed to create debugfs files\n");
8225 goto out_remove_sysfs;
8226 }
8227
8228 iwl4965_setup_deferred_work(priv);
8229 iwl4965_setup_rx_handlers(priv);
8230
8231 /********************
8232 * 9. Conclude
8233 ********************/
8234 pci_save_state(pdev);
8235 pci_disable_device(pdev);
8236
8237 return 0;
8238
8239 out_remove_sysfs:
8240 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8241 out_unset_hw_settings:
8242 iwl4965_unset_hw_setting(priv);
8243 out_iounmap:
8244 pci_iounmap(pdev, priv->hw_base);
8245 out_pci_release_regions:
8246 pci_release_regions(pdev);
8247 pci_set_drvdata(pdev, NULL);
8248 out_pci_disable_device:
8249 pci_disable_device(pdev);
8250 out_ieee80211_free_hw:
8251 ieee80211_free_hw(priv->hw);
8252 out:
8253 return err;
8254 }
8255
8256 static void iwl4965_pci_remove(struct pci_dev *pdev)
8257 {
8258 struct iwl_priv *priv = pci_get_drvdata(pdev);
8259 struct list_head *p, *q;
8260 int i;
8261
8262 if (!priv)
8263 return;
8264
8265 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
8266
8267 set_bit(STATUS_EXIT_PENDING, &priv->status);
8268
8269 iwl4965_down(priv);
8270
8271 /* Free MAC hash list for ADHOC */
8272 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
8273 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
8274 list_del(p);
8275 kfree(list_entry(p, struct iwl4965_ibss_seq, list));
8276 }
8277 }
8278
8279 iwl_dbgfs_unregister(priv);
8280 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8281
8282 iwl4965_dealloc_ucode_pci(priv);
8283
8284 if (priv->rxq.bd)
8285 iwl4965_rx_queue_free(priv, &priv->rxq);
8286 iwl4965_hw_txq_ctx_free(priv);
8287
8288 iwl4965_unset_hw_setting(priv);
8289 iwlcore_clear_stations_table(priv);
8290
8291 if (priv->mac80211_registered) {
8292 ieee80211_unregister_hw(priv->hw);
8293 iwl4965_rate_control_unregister(priv->hw);
8294 }
8295
8296 /*netif_stop_queue(dev); */
8297 flush_workqueue(priv->workqueue);
8298
8299 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
8300 * priv->workqueue... so we can't take down the workqueue
8301 * until now... */
8302 destroy_workqueue(priv->workqueue);
8303 priv->workqueue = NULL;
8304
8305 pci_iounmap(pdev, priv->hw_base);
8306 pci_release_regions(pdev);
8307 pci_disable_device(pdev);
8308 pci_set_drvdata(pdev, NULL);
8309
8310 iwl_free_channel_map(priv);
8311 iwl4965_free_geos(priv);
8312
8313 if (priv->ibss_beacon)
8314 dev_kfree_skb(priv->ibss_beacon);
8315
8316 ieee80211_free_hw(priv->hw);
8317 }
8318
8319 #ifdef CONFIG_PM
8320
8321 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
8322 {
8323 struct iwl_priv *priv = pci_get_drvdata(pdev);
8324
8325 if (priv->is_open) {
8326 set_bit(STATUS_IN_SUSPEND, &priv->status);
8327 iwl4965_mac_stop(priv->hw);
8328 priv->is_open = 1;
8329 }
8330
8331 pci_set_power_state(pdev, PCI_D3hot);
8332
8333 return 0;
8334 }
8335
8336 static int iwl4965_pci_resume(struct pci_dev *pdev)
8337 {
8338 struct iwl_priv *priv = pci_get_drvdata(pdev);
8339
8340 pci_set_power_state(pdev, PCI_D0);
8341
8342 if (priv->is_open)
8343 iwl4965_mac_start(priv->hw);
8344
8345 clear_bit(STATUS_IN_SUSPEND, &priv->status);
8346 return 0;
8347 }
8348
8349 #endif /* CONFIG_PM */
8350
8351 /*****************************************************************************
8352 *
8353 * driver and module entry point
8354 *
8355 *****************************************************************************/
8356
8357 static struct pci_driver iwl4965_driver = {
8358 .name = DRV_NAME,
8359 .id_table = iwl4965_hw_card_ids,
8360 .probe = iwl4965_pci_probe,
8361 .remove = __devexit_p(iwl4965_pci_remove),
8362 #ifdef CONFIG_PM
8363 .suspend = iwl4965_pci_suspend,
8364 .resume = iwl4965_pci_resume,
8365 #endif
8366 };
8367
8368 static int __init iwl4965_init(void)
8369 {
8370
8371 int ret;
8372 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
8373 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
8374 ret = pci_register_driver(&iwl4965_driver);
8375 if (ret) {
8376 IWL_ERROR("Unable to initialize PCI module\n");
8377 return ret;
8378 }
8379 #ifdef CONFIG_IWLWIFI_DEBUG
8380 ret = driver_create_file(&iwl4965_driver.driver, &driver_attr_debug_level);
8381 if (ret) {
8382 IWL_ERROR("Unable to create driver sysfs file\n");
8383 pci_unregister_driver(&iwl4965_driver);
8384 return ret;
8385 }
8386 #endif
8387
8388 return ret;
8389 }
8390
8391 static void __exit iwl4965_exit(void)
8392 {
8393 #ifdef CONFIG_IWLWIFI_DEBUG
8394 driver_remove_file(&iwl4965_driver.driver, &driver_attr_debug_level);
8395 #endif
8396 pci_unregister_driver(&iwl4965_driver);
8397 }
8398
8399 module_param_named(antenna, iwl4965_mod_params.antenna, int, 0444);
8400 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
8401 module_param_named(disable, iwl4965_mod_params.disable, int, 0444);
8402 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
8403 module_param_named(hwcrypto, iwl4965_mod_params.hw_crypto, int, 0444);
8404 MODULE_PARM_DESC(hwcrypto,
8405 "using hardware crypto engine (default 0 [software])\n");
8406 module_param_named(debug, iwl4965_mod_params.debug, int, 0444);
8407 MODULE_PARM_DESC(debug, "debug output mask");
8408 module_param_named(
8409 disable_hw_scan, iwl4965_mod_params.disable_hw_scan, int, 0444);
8410 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
8411
8412 module_param_named(queues_num, iwl4965_mod_params.num_of_queues, int, 0444);
8413 MODULE_PARM_DESC(queues_num, "number of hw queues.");
8414
8415 /* QoS */
8416 module_param_named(qos_enable, iwl4965_mod_params.enable_qos, int, 0444);
8417 MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
8418 module_param_named(amsdu_size_8K, iwl4965_mod_params.amsdu_size_8K, int, 0444);
8419 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
8420
8421 module_exit(iwl4965_exit);
8422 module_init(iwl4965_init);
Linux kernel - Deliverables
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