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iwlwifi: remove 4965 from station_entry
[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-dev.h"
50 #include "iwl-core.h"
51 #include "iwl-io.h"
52 #include "iwl-helpers.h"
53 #include "iwl-sta.h"
54 #include "iwl-calib.h"
55
56 static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv,
57 struct iwl4965_tx_queue *txq);
58
59 /******************************************************************************
60 *
61 * module boiler plate
62 *
63 ******************************************************************************/
64
65 /*
66 * module name, copyright, version, etc.
67 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
68 */
69
70 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
71
72 #ifdef CONFIG_IWLWIFI_DEBUG
73 #define VD "d"
74 #else
75 #define VD
76 #endif
77
78 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
79 #define VS "s"
80 #else
81 #define VS
82 #endif
83
84 #define DRV_VERSION IWLWIFI_VERSION VD VS
85
86
87 MODULE_DESCRIPTION(DRV_DESCRIPTION);
88 MODULE_VERSION(DRV_VERSION);
89 MODULE_AUTHOR(DRV_COPYRIGHT);
90 MODULE_LICENSE("GPL");
91
92 __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
93 {
94 u16 fc = le16_to_cpu(hdr->frame_control);
95 int hdr_len = ieee80211_get_hdrlen(fc);
96
97 if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
98 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
99 return NULL;
100 }
101
102 static const struct ieee80211_supported_band *iwl_get_hw_mode(
103 struct iwl_priv *priv, enum ieee80211_band band)
104 {
105 return priv->hw->wiphy->bands[band];
106 }
107
108 static int iwl4965_is_empty_essid(const char *essid, int essid_len)
109 {
110 /* Single white space is for Linksys APs */
111 if (essid_len == 1 && essid[0] == ' ')
112 return 1;
113
114 /* Otherwise, if the entire essid is 0, we assume it is hidden */
115 while (essid_len) {
116 essid_len--;
117 if (essid[essid_len] != '\0')
118 return 0;
119 }
120
121 return 1;
122 }
123
124 static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
125 {
126 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
127 const char *s = essid;
128 char *d = escaped;
129
130 if (iwl4965_is_empty_essid(essid, essid_len)) {
131 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
132 return escaped;
133 }
134
135 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
136 while (essid_len--) {
137 if (*s == '\0') {
138 *d++ = '\\';
139 *d++ = '0';
140 s++;
141 } else
142 *d++ = *s++;
143 }
144 *d = '\0';
145 return escaped;
146 }
147
148 /*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
149 * DMA services
150 *
151 * Theory of operation
152 *
153 * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
154 * of buffer descriptors, each of which points to one or more data buffers for
155 * the device to read from or fill. Driver and device exchange status of each
156 * queue via "read" and "write" pointers. Driver keeps minimum of 2 empty
157 * entries in each circular buffer, to protect against confusing empty and full
158 * queue states.
159 *
160 * The device reads or writes the data in the queues via the device's several
161 * DMA/FIFO channels. Each queue is mapped to a single DMA channel.
162 *
163 * For Tx queue, there are low mark and high mark limits. If, after queuing
164 * the packet for Tx, free space become < low mark, Tx queue stopped. When
165 * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
166 * Tx queue resumed.
167 *
168 * The 4965 operates with up to 17 queues: One receive queue, one transmit
169 * queue (#4) for sending commands to the device firmware, and 15 other
170 * Tx queues that may be mapped to prioritized Tx DMA/FIFO channels.
171 *
172 * See more detailed info in iwl-4965-hw.h.
173 ***************************************************/
174
175 int iwl4965_queue_space(const struct iwl4965_queue *q)
176 {
177 int s = q->read_ptr - q->write_ptr;
178
179 if (q->read_ptr > q->write_ptr)
180 s -= q->n_bd;
181
182 if (s <= 0)
183 s += q->n_window;
184 /* keep some reserve to not confuse empty and full situations */
185 s -= 2;
186 if (s < 0)
187 s = 0;
188 return s;
189 }
190
191
192 static inline int x2_queue_used(const struct iwl4965_queue *q, int i)
193 {
194 return q->write_ptr > q->read_ptr ?
195 (i >= q->read_ptr && i < q->write_ptr) :
196 !(i < q->read_ptr && i >= q->write_ptr);
197 }
198
199 static inline u8 get_cmd_index(struct iwl4965_queue *q, u32 index, int is_huge)
200 {
201 /* This is for scan command, the big buffer at end of command array */
202 if (is_huge)
203 return q->n_window; /* must be power of 2 */
204
205 /* Otherwise, use normal size buffers */
206 return index & (q->n_window - 1);
207 }
208
209 /**
210 * iwl4965_queue_init - Initialize queue's high/low-water and read/write indexes
211 */
212 static int iwl4965_queue_init(struct iwl_priv *priv, struct iwl4965_queue *q,
213 int count, int slots_num, u32 id)
214 {
215 q->n_bd = count;
216 q->n_window = slots_num;
217 q->id = id;
218
219 /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
220 * and iwl_queue_dec_wrap are broken. */
221 BUG_ON(!is_power_of_2(count));
222
223 /* slots_num must be power-of-two size, otherwise
224 * get_cmd_index is broken. */
225 BUG_ON(!is_power_of_2(slots_num));
226
227 q->low_mark = q->n_window / 4;
228 if (q->low_mark < 4)
229 q->low_mark = 4;
230
231 q->high_mark = q->n_window / 8;
232 if (q->high_mark < 2)
233 q->high_mark = 2;
234
235 q->write_ptr = q->read_ptr = 0;
236
237 return 0;
238 }
239
240 /**
241 * iwl4965_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
242 */
243 static int iwl4965_tx_queue_alloc(struct iwl_priv *priv,
244 struct iwl4965_tx_queue *txq, u32 id)
245 {
246 struct pci_dev *dev = priv->pci_dev;
247
248 /* Driver private data, only for Tx (not command) queues,
249 * not shared with device. */
250 if (id != IWL_CMD_QUEUE_NUM) {
251 txq->txb = kmalloc(sizeof(txq->txb[0]) *
252 TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
253 if (!txq->txb) {
254 IWL_ERROR("kmalloc for auxiliary BD "
255 "structures failed\n");
256 goto error;
257 }
258 } else
259 txq->txb = NULL;
260
261 /* Circular buffer of transmit frame descriptors (TFDs),
262 * shared with device */
263 txq->bd = pci_alloc_consistent(dev,
264 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
265 &txq->q.dma_addr);
266
267 if (!txq->bd) {
268 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
269 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
270 goto error;
271 }
272 txq->q.id = id;
273
274 return 0;
275
276 error:
277 if (txq->txb) {
278 kfree(txq->txb);
279 txq->txb = NULL;
280 }
281
282 return -ENOMEM;
283 }
284
285 /**
286 * iwl4965_tx_queue_init - Allocate and initialize one tx/cmd queue
287 */
288 int iwl4965_tx_queue_init(struct iwl_priv *priv,
289 struct iwl4965_tx_queue *txq, int slots_num, u32 txq_id)
290 {
291 struct pci_dev *dev = priv->pci_dev;
292 int len;
293 int rc = 0;
294
295 /*
296 * Alloc buffer array for commands (Tx or other types of commands).
297 * For the command queue (#4), allocate command space + one big
298 * command for scan, since scan command is very huge; the system will
299 * not have two scans at the same time, so only one is needed.
300 * For normal Tx queues (all other queues), no super-size command
301 * space is needed.
302 */
303 len = sizeof(struct iwl_cmd) * slots_num;
304 if (txq_id == IWL_CMD_QUEUE_NUM)
305 len += IWL_MAX_SCAN_SIZE;
306 txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
307 if (!txq->cmd)
308 return -ENOMEM;
309
310 /* Alloc driver data array and TFD circular buffer */
311 rc = iwl4965_tx_queue_alloc(priv, txq, txq_id);
312 if (rc) {
313 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
314
315 return -ENOMEM;
316 }
317 txq->need_update = 0;
318
319 /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
320 * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
321 BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
322
323 /* Initialize queue's high/low-water marks, and head/tail indexes */
324 iwl4965_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
325
326 /* Tell device where to find queue */
327 iwl4965_hw_tx_queue_init(priv, txq);
328
329 return 0;
330 }
331
332 /**
333 * iwl4965_tx_queue_free - Deallocate DMA queue.
334 * @txq: Transmit queue to deallocate.
335 *
336 * Empty queue by removing and destroying all BD's.
337 * Free all buffers.
338 * 0-fill, but do not free "txq" descriptor structure.
339 */
340 void iwl4965_tx_queue_free(struct iwl_priv *priv, struct iwl4965_tx_queue *txq)
341 {
342 struct iwl4965_queue *q = &txq->q;
343 struct pci_dev *dev = priv->pci_dev;
344 int len;
345
346 if (q->n_bd == 0)
347 return;
348
349 /* first, empty all BD's */
350 for (; q->write_ptr != q->read_ptr;
351 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd))
352 iwl4965_hw_txq_free_tfd(priv, txq);
353
354 len = sizeof(struct iwl_cmd) * q->n_window;
355 if (q->id == IWL_CMD_QUEUE_NUM)
356 len += IWL_MAX_SCAN_SIZE;
357
358 /* De-alloc array of command/tx buffers */
359 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
360
361 /* De-alloc circular buffer of TFDs */
362 if (txq->q.n_bd)
363 pci_free_consistent(dev, sizeof(struct iwl4965_tfd_frame) *
364 txq->q.n_bd, txq->bd, txq->q.dma_addr);
365
366 /* De-alloc array of per-TFD driver data */
367 if (txq->txb) {
368 kfree(txq->txb);
369 txq->txb = NULL;
370 }
371
372 /* 0-fill queue descriptor structure */
373 memset(txq, 0, sizeof(*txq));
374 }
375
376 const u8 iwl4965_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
377
378 /*************** STATION TABLE MANAGEMENT ****
379 * mac80211 should be examined to determine if sta_info is duplicating
380 * the functionality provided here
381 */
382
383 /**************************************************************/
384
385 #if 0 /* temporary disable till we add real remove station */
386 /**
387 * iwl4965_remove_station - Remove driver's knowledge of station.
388 *
389 * NOTE: This does not remove station from device's station table.
390 */
391 static u8 iwl4965_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
392 {
393 int index = IWL_INVALID_STATION;
394 int i;
395 unsigned long flags;
396
397 spin_lock_irqsave(&priv->sta_lock, flags);
398
399 if (is_ap)
400 index = IWL_AP_ID;
401 else if (is_broadcast_ether_addr(addr))
402 index = priv->hw_params.bcast_sta_id;
403 else
404 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
405 if (priv->stations[i].used &&
406 !compare_ether_addr(priv->stations[i].sta.sta.addr,
407 addr)) {
408 index = i;
409 break;
410 }
411
412 if (unlikely(index == IWL_INVALID_STATION))
413 goto out;
414
415 if (priv->stations[index].used) {
416 priv->stations[index].used = 0;
417 priv->num_stations--;
418 }
419
420 BUG_ON(priv->num_stations < 0);
421
422 out:
423 spin_unlock_irqrestore(&priv->sta_lock, flags);
424 return 0;
425 }
426 #endif
427
428 /**
429 * iwl4965_add_station_flags - Add station to tables in driver and device
430 */
431 u8 iwl4965_add_station_flags(struct iwl_priv *priv, const u8 *addr,
432 int is_ap, u8 flags, void *ht_data)
433 {
434 int i;
435 int index = IWL_INVALID_STATION;
436 struct iwl_station_entry *station;
437 unsigned long flags_spin;
438 DECLARE_MAC_BUF(mac);
439
440 spin_lock_irqsave(&priv->sta_lock, flags_spin);
441 if (is_ap)
442 index = IWL_AP_ID;
443 else if (is_broadcast_ether_addr(addr))
444 index = priv->hw_params.bcast_sta_id;
445 else
446 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
447 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
448 addr)) {
449 index = i;
450 break;
451 }
452
453 if (!priv->stations[i].used &&
454 index == IWL_INVALID_STATION)
455 index = i;
456 }
457
458
459 /* These two conditions have the same outcome, but keep them separate
460 since they have different meanings */
461 if (unlikely(index == IWL_INVALID_STATION)) {
462 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
463 return index;
464 }
465
466 if (priv->stations[index].used &&
467 !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
468 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
469 return index;
470 }
471
472
473 IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
474 station = &priv->stations[index];
475 station->used = 1;
476 priv->num_stations++;
477
478 /* Set up the REPLY_ADD_STA command to send to device */
479 memset(&station->sta, 0, sizeof(struct iwl4965_addsta_cmd));
480 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
481 station->sta.mode = 0;
482 station->sta.sta.sta_id = index;
483 station->sta.station_flags = 0;
484
485 #ifdef CONFIG_IWL4965_HT
486 /* BCAST station and IBSS stations do not work in HT mode */
487 if (index != priv->hw_params.bcast_sta_id &&
488 priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
489 iwl4965_set_ht_add_station(priv, index,
490 (struct ieee80211_ht_info *) ht_data);
491 #endif /*CONFIG_IWL4965_HT*/
492
493 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
494
495 /* Add station to device's station table */
496 iwl4965_send_add_station(priv, &station->sta, flags);
497 return index;
498
499 }
500
501
502
503 /*************** HOST COMMAND QUEUE FUNCTIONS *****/
504
505 /**
506 * iwl4965_enqueue_hcmd - enqueue a uCode command
507 * @priv: device private data point
508 * @cmd: a point to the ucode command structure
509 *
510 * The function returns < 0 values to indicate the operation is
511 * failed. On success, it turns the index (> 0) of command in the
512 * command queue.
513 */
514 int iwl4965_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
515 {
516 struct iwl4965_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
517 struct iwl4965_queue *q = &txq->q;
518 struct iwl4965_tfd_frame *tfd;
519 u32 *control_flags;
520 struct iwl_cmd *out_cmd;
521 u32 idx;
522 u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
523 dma_addr_t phys_addr;
524 int ret;
525 unsigned long flags;
526
527 /* If any of the command structures end up being larger than
528 * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
529 * we will need to increase the size of the TFD entries */
530 BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
531 !(cmd->meta.flags & CMD_SIZE_HUGE));
532
533 if (iwl_is_rfkill(priv)) {
534 IWL_DEBUG_INFO("Not sending command - RF KILL");
535 return -EIO;
536 }
537
538 if (iwl4965_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
539 IWL_ERROR("No space for Tx\n");
540 return -ENOSPC;
541 }
542
543 spin_lock_irqsave(&priv->hcmd_lock, flags);
544
545 tfd = &txq->bd[q->write_ptr];
546 memset(tfd, 0, sizeof(*tfd));
547
548 control_flags = (u32 *) tfd;
549
550 idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
551 out_cmd = &txq->cmd[idx];
552
553 out_cmd->hdr.cmd = cmd->id;
554 memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
555 memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
556
557 /* At this point, the out_cmd now has all of the incoming cmd
558 * information */
559
560 out_cmd->hdr.flags = 0;
561 out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
562 INDEX_TO_SEQ(q->write_ptr));
563 if (out_cmd->meta.flags & CMD_SIZE_HUGE)
564 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
565
566 phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
567 offsetof(struct iwl_cmd, hdr);
568 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
569
570 IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
571 "%d bytes at %d[%d]:%d\n",
572 get_cmd_string(out_cmd->hdr.cmd),
573 out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
574 fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
575
576 txq->need_update = 1;
577
578 /* Set up entry in queue's byte count circular buffer */
579 priv->cfg->ops->lib->txq_update_byte_cnt_tbl(priv, txq, 0);
580
581 /* Increment and update queue's write index */
582 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
583 ret = iwl4965_tx_queue_update_write_ptr(priv, txq);
584
585 spin_unlock_irqrestore(&priv->hcmd_lock, flags);
586 return ret ? ret : idx;
587 }
588
589 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
590 {
591 struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
592
593 if (hw_decrypt)
594 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
595 else
596 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
597
598 }
599
600 /**
601 * iwl4965_rxon_add_station - add station into station table.
602 *
603 * there is only one AP station with id= IWL_AP_ID
604 * NOTE: mutex must be held before calling this fnction
605 */
606 static int iwl4965_rxon_add_station(struct iwl_priv *priv,
607 const u8 *addr, int is_ap)
608 {
609 u8 sta_id;
610
611 /* Add station to device's station table */
612 #ifdef CONFIG_IWL4965_HT
613 struct ieee80211_conf *conf = &priv->hw->conf;
614 struct ieee80211_ht_info *cur_ht_config = &conf->ht_conf;
615
616 if ((is_ap) &&
617 (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) &&
618 (priv->iw_mode == IEEE80211_IF_TYPE_STA))
619 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
620 0, cur_ht_config);
621 else
622 #endif /* CONFIG_IWL4965_HT */
623 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
624 0, NULL);
625
626 /* Set up default rate scaling table in device's station table */
627 iwl4965_add_station(priv, addr, is_ap);
628
629 return sta_id;
630 }
631
632 /**
633 * iwl4965_check_rxon_cmd - validate RXON structure is valid
634 *
635 * NOTE: This is really only useful during development and can eventually
636 * be #ifdef'd out once the driver is stable and folks aren't actively
637 * making changes
638 */
639 static int iwl4965_check_rxon_cmd(struct iwl4965_rxon_cmd *rxon)
640 {
641 int error = 0;
642 int counter = 1;
643
644 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
645 error |= le32_to_cpu(rxon->flags &
646 (RXON_FLG_TGJ_NARROW_BAND_MSK |
647 RXON_FLG_RADAR_DETECT_MSK));
648 if (error)
649 IWL_WARNING("check 24G fields %d | %d\n",
650 counter++, error);
651 } else {
652 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
653 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
654 if (error)
655 IWL_WARNING("check 52 fields %d | %d\n",
656 counter++, error);
657 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
658 if (error)
659 IWL_WARNING("check 52 CCK %d | %d\n",
660 counter++, error);
661 }
662 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
663 if (error)
664 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
665
666 /* make sure basic rates 6Mbps and 1Mbps are supported */
667 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
668 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
669 if (error)
670 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
671
672 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
673 if (error)
674 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
675
676 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
677 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
678 if (error)
679 IWL_WARNING("check CCK and short slot %d | %d\n",
680 counter++, error);
681
682 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
683 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
684 if (error)
685 IWL_WARNING("check CCK & auto detect %d | %d\n",
686 counter++, error);
687
688 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
689 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
690 if (error)
691 IWL_WARNING("check TGG and auto detect %d | %d\n",
692 counter++, error);
693
694 if (error)
695 IWL_WARNING("Tuning to channel %d\n",
696 le16_to_cpu(rxon->channel));
697
698 if (error) {
699 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
700 return -1;
701 }
702 return 0;
703 }
704
705 /**
706 * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
707 * @priv: staging_rxon is compared to active_rxon
708 *
709 * If the RXON structure is changing enough to require a new tune,
710 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
711 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
712 */
713 static int iwl4965_full_rxon_required(struct iwl_priv *priv)
714 {
715
716 /* These items are only settable from the full RXON command */
717 if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
718 compare_ether_addr(priv->staging_rxon.bssid_addr,
719 priv->active_rxon.bssid_addr) ||
720 compare_ether_addr(priv->staging_rxon.node_addr,
721 priv->active_rxon.node_addr) ||
722 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
723 priv->active_rxon.wlap_bssid_addr) ||
724 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
725 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
726 (priv->staging_rxon.air_propagation !=
727 priv->active_rxon.air_propagation) ||
728 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
729 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
730 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
731 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
732 (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
733 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
734 return 1;
735
736 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
737 * be updated with the RXON_ASSOC command -- however only some
738 * flag transitions are allowed using RXON_ASSOC */
739
740 /* Check if we are not switching bands */
741 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
742 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
743 return 1;
744
745 /* Check if we are switching association toggle */
746 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
747 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
748 return 1;
749
750 return 0;
751 }
752
753 /**
754 * iwl4965_commit_rxon - commit staging_rxon to hardware
755 *
756 * The RXON command in staging_rxon is committed to the hardware and
757 * the active_rxon structure is updated with the new data. This
758 * function correctly transitions out of the RXON_ASSOC_MSK state if
759 * a HW tune is required based on the RXON structure changes.
760 */
761 static int iwl4965_commit_rxon(struct iwl_priv *priv)
762 {
763 /* cast away the const for active_rxon in this function */
764 struct iwl4965_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
765 DECLARE_MAC_BUF(mac);
766 int rc = 0;
767
768 if (!iwl_is_alive(priv))
769 return -1;
770
771 /* always get timestamp with Rx frame */
772 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
773
774 rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
775 if (rc) {
776 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
777 return -EINVAL;
778 }
779
780 /* If we don't need to send a full RXON, we can use
781 * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
782 * and other flags for the current radio configuration. */
783 if (!iwl4965_full_rxon_required(priv)) {
784 rc = iwl_send_rxon_assoc(priv);
785 if (rc) {
786 IWL_ERROR("Error setting RXON_ASSOC "
787 "configuration (%d).\n", rc);
788 return rc;
789 }
790
791 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
792
793 return 0;
794 }
795
796 /* station table will be cleared */
797 priv->assoc_station_added = 0;
798
799 /* If we are currently associated and the new config requires
800 * an RXON_ASSOC and the new config wants the associated mask enabled,
801 * we must clear the associated from the active configuration
802 * before we apply the new config */
803 if (iwl_is_associated(priv) &&
804 (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
805 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
806 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
807
808 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
809 sizeof(struct iwl4965_rxon_cmd),
810 &priv->active_rxon);
811
812 /* If the mask clearing failed then we set
813 * active_rxon back to what it was previously */
814 if (rc) {
815 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
816 IWL_ERROR("Error clearing ASSOC_MSK on current "
817 "configuration (%d).\n", rc);
818 return rc;
819 }
820 }
821
822 IWL_DEBUG_INFO("Sending RXON\n"
823 "* with%s RXON_FILTER_ASSOC_MSK\n"
824 "* channel = %d\n"
825 "* bssid = %s\n",
826 ((priv->staging_rxon.filter_flags &
827 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
828 le16_to_cpu(priv->staging_rxon.channel),
829 print_mac(mac, priv->staging_rxon.bssid_addr));
830
831 iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
832 /* Apply the new configuration */
833 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
834 sizeof(struct iwl4965_rxon_cmd), &priv->staging_rxon);
835 if (rc) {
836 IWL_ERROR("Error setting new configuration (%d).\n", rc);
837 return rc;
838 }
839
840 iwlcore_clear_stations_table(priv);
841
842 if (!priv->error_recovering)
843 priv->start_calib = 0;
844
845 iwl_init_sensitivity(priv);
846
847 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
848
849 /* If we issue a new RXON command which required a tune then we must
850 * send a new TXPOWER command or we won't be able to Tx any frames */
851 rc = iwl4965_hw_reg_send_txpower(priv);
852 if (rc) {
853 IWL_ERROR("Error setting Tx power (%d).\n", rc);
854 return rc;
855 }
856
857 /* Add the broadcast address so we can send broadcast frames */
858 if (iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0) ==
859 IWL_INVALID_STATION) {
860 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
861 return -EIO;
862 }
863
864 /* If we have set the ASSOC_MSK and we are in BSS mode then
865 * add the IWL_AP_ID to the station rate table */
866 if (iwl_is_associated(priv) &&
867 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
868 if (iwl4965_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
869 == IWL_INVALID_STATION) {
870 IWL_ERROR("Error adding AP address for transmit.\n");
871 return -EIO;
872 }
873 priv->assoc_station_added = 1;
874 if (priv->default_wep_key &&
875 iwl_send_static_wepkey_cmd(priv, 0))
876 IWL_ERROR("Could not send WEP static key.\n");
877 }
878
879 return 0;
880 }
881
882 void iwl4965_update_chain_flags(struct iwl_priv *priv)
883 {
884
885 iwl_set_rxon_chain(priv);
886 iwl4965_commit_rxon(priv);
887 }
888
889 static int iwl4965_send_bt_config(struct iwl_priv *priv)
890 {
891 struct iwl4965_bt_cmd bt_cmd = {
892 .flags = 3,
893 .lead_time = 0xAA,
894 .max_kill = 1,
895 .kill_ack_mask = 0,
896 .kill_cts_mask = 0,
897 };
898
899 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
900 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
901 }
902
903 static int iwl4965_send_scan_abort(struct iwl_priv *priv)
904 {
905 int rc = 0;
906 struct iwl4965_rx_packet *res;
907 struct iwl_host_cmd cmd = {
908 .id = REPLY_SCAN_ABORT_CMD,
909 .meta.flags = CMD_WANT_SKB,
910 };
911
912 /* If there isn't a scan actively going on in the hardware
913 * then we are in between scan bands and not actually
914 * actively scanning, so don't send the abort command */
915 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
916 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
917 return 0;
918 }
919
920 rc = iwl_send_cmd_sync(priv, &cmd);
921 if (rc) {
922 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
923 return rc;
924 }
925
926 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
927 if (res->u.status != CAN_ABORT_STATUS) {
928 /* The scan abort will return 1 for success or
929 * 2 for "failure". A failure condition can be
930 * due to simply not being in an active scan which
931 * can occur if we send the scan abort before we
932 * the microcode has notified us that a scan is
933 * completed. */
934 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
935 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
936 clear_bit(STATUS_SCAN_HW, &priv->status);
937 }
938
939 dev_kfree_skb_any(cmd.meta.u.skb);
940
941 return rc;
942 }
943
944 /*
945 * CARD_STATE_CMD
946 *
947 * Use: Sets the device's internal card state to enable, disable, or halt
948 *
949 * When in the 'enable' state the card operates as normal.
950 * When in the 'disable' state, the card enters into a low power mode.
951 * When in the 'halt' state, the card is shut down and must be fully
952 * restarted to come back on.
953 */
954 static int iwl4965_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
955 {
956 struct iwl_host_cmd cmd = {
957 .id = REPLY_CARD_STATE_CMD,
958 .len = sizeof(u32),
959 .data = &flags,
960 .meta.flags = meta_flag,
961 };
962
963 return iwl_send_cmd(priv, &cmd);
964 }
965
966 int iwl4965_send_add_station(struct iwl_priv *priv,
967 struct iwl4965_addsta_cmd *sta, u8 flags)
968 {
969 struct iwl4965_rx_packet *res = NULL;
970 int rc = 0;
971 struct iwl_host_cmd cmd = {
972 .id = REPLY_ADD_STA,
973 .len = sizeof(struct iwl4965_addsta_cmd),
974 .meta.flags = flags,
975 .data = sta,
976 };
977
978 if (!(flags & CMD_ASYNC))
979 cmd.meta.flags |= CMD_WANT_SKB;
980
981 rc = iwl_send_cmd(priv, &cmd);
982
983 if (rc || (flags & CMD_ASYNC))
984 return rc;
985
986 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
987 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
988 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
989 res->hdr.flags);
990 rc = -EIO;
991 }
992
993 if (rc == 0) {
994 switch (res->u.add_sta.status) {
995 case ADD_STA_SUCCESS_MSK:
996 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
997 break;
998 default:
999 rc = -EIO;
1000 IWL_WARNING("REPLY_ADD_STA failed\n");
1001 break;
1002 }
1003 }
1004
1005 priv->alloc_rxb_skb--;
1006 dev_kfree_skb_any(cmd.meta.u.skb);
1007
1008 return rc;
1009 }
1010
1011 static void iwl4965_clear_free_frames(struct iwl_priv *priv)
1012 {
1013 struct list_head *element;
1014
1015 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1016 priv->frames_count);
1017
1018 while (!list_empty(&priv->free_frames)) {
1019 element = priv->free_frames.next;
1020 list_del(element);
1021 kfree(list_entry(element, struct iwl4965_frame, list));
1022 priv->frames_count--;
1023 }
1024
1025 if (priv->frames_count) {
1026 IWL_WARNING("%d frames still in use. Did we lose one?\n",
1027 priv->frames_count);
1028 priv->frames_count = 0;
1029 }
1030 }
1031
1032 static struct iwl4965_frame *iwl4965_get_free_frame(struct iwl_priv *priv)
1033 {
1034 struct iwl4965_frame *frame;
1035 struct list_head *element;
1036 if (list_empty(&priv->free_frames)) {
1037 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1038 if (!frame) {
1039 IWL_ERROR("Could not allocate frame!\n");
1040 return NULL;
1041 }
1042
1043 priv->frames_count++;
1044 return frame;
1045 }
1046
1047 element = priv->free_frames.next;
1048 list_del(element);
1049 return list_entry(element, struct iwl4965_frame, list);
1050 }
1051
1052 static void iwl4965_free_frame(struct iwl_priv *priv, struct iwl4965_frame *frame)
1053 {
1054 memset(frame, 0, sizeof(*frame));
1055 list_add(&frame->list, &priv->free_frames);
1056 }
1057
1058 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
1059 struct ieee80211_hdr *hdr,
1060 const u8 *dest, int left)
1061 {
1062
1063 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
1064 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1065 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1066 return 0;
1067
1068 if (priv->ibss_beacon->len > left)
1069 return 0;
1070
1071 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1072
1073 return priv->ibss_beacon->len;
1074 }
1075
1076 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
1077 {
1078 int i;
1079 int rate_mask;
1080
1081 /* Set rate mask*/
1082 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
1083 rate_mask = priv->active_rate_basic & 0xF;
1084 else
1085 rate_mask = priv->active_rate_basic & 0xFF0;
1086
1087 /* Find lowest valid rate */
1088 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1089 i = iwl4965_rates[i].next_ieee) {
1090 if (rate_mask & (1 << i))
1091 return iwl4965_rates[i].plcp;
1092 }
1093
1094 /* No valid rate was found. Assign the lowest one */
1095 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
1096 return IWL_RATE_1M_PLCP;
1097 else
1098 return IWL_RATE_6M_PLCP;
1099 }
1100
1101 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
1102 {
1103 struct iwl4965_frame *frame;
1104 unsigned int frame_size;
1105 int rc;
1106 u8 rate;
1107
1108 frame = iwl4965_get_free_frame(priv);
1109
1110 if (!frame) {
1111 IWL_ERROR("Could not obtain free frame buffer for beacon "
1112 "command.\n");
1113 return -ENOMEM;
1114 }
1115
1116 rate = iwl4965_rate_get_lowest_plcp(priv);
1117
1118 frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
1119
1120 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1121 &frame->u.cmd[0]);
1122
1123 iwl4965_free_frame(priv, frame);
1124
1125 return rc;
1126 }
1127
1128 /******************************************************************************
1129 *
1130 * Misc. internal state and helper functions
1131 *
1132 ******************************************************************************/
1133
1134 /**
1135 * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
1136 *
1137 * return : set the bit for each supported rate insert in ie
1138 */
1139 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1140 u16 basic_rate, int *left)
1141 {
1142 u16 ret_rates = 0, bit;
1143 int i;
1144 u8 *cnt = ie;
1145 u8 *rates = ie + 1;
1146
1147 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1148 if (bit & supported_rate) {
1149 ret_rates |= bit;
1150 rates[*cnt] = iwl4965_rates[i].ieee |
1151 ((bit & basic_rate) ? 0x80 : 0x00);
1152 (*cnt)++;
1153 (*left)--;
1154 if ((*left <= 0) ||
1155 (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1156 break;
1157 }
1158 }
1159
1160 return ret_rates;
1161 }
1162
1163 #ifdef CONFIG_IWL4965_HT
1164 static void iwl4965_ht_conf(struct iwl_priv *priv,
1165 struct ieee80211_bss_conf *bss_conf)
1166 {
1167 struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
1168 struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
1169 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
1170
1171 IWL_DEBUG_MAC80211("enter: \n");
1172
1173 iwl_conf->is_ht = bss_conf->assoc_ht;
1174
1175 if (!iwl_conf->is_ht)
1176 return;
1177
1178 priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
1179
1180 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
1181 iwl_conf->sgf |= 0x1;
1182 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
1183 iwl_conf->sgf |= 0x2;
1184
1185 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
1186 iwl_conf->max_amsdu_size =
1187 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
1188
1189 iwl_conf->supported_chan_width =
1190 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
1191 iwl_conf->extension_chan_offset =
1192 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
1193 /* If no above or below channel supplied disable FAT channel */
1194 if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
1195 iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
1196 iwl_conf->supported_chan_width = 0;
1197
1198 iwl_conf->tx_mimo_ps_mode =
1199 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
1200 memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
1201
1202 iwl_conf->control_channel = ht_bss_conf->primary_channel;
1203 iwl_conf->tx_chan_width =
1204 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
1205 iwl_conf->ht_protection =
1206 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
1207 iwl_conf->non_GF_STA_present =
1208 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
1209
1210 IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
1211 IWL_DEBUG_MAC80211("leave\n");
1212 }
1213
1214 static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
1215 u8 *pos, int *left)
1216 {
1217 struct ieee80211_ht_cap *ht_cap;
1218
1219 if (!sband || !sband->ht_info.ht_supported)
1220 return;
1221
1222 if (*left < sizeof(struct ieee80211_ht_cap))
1223 return;
1224
1225 *pos++ = sizeof(struct ieee80211_ht_cap);
1226 ht_cap = (struct ieee80211_ht_cap *) pos;
1227
1228 ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
1229 memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
1230 ht_cap->ampdu_params_info =
1231 (sband->ht_info.ampdu_factor & IEEE80211_HT_CAP_AMPDU_FACTOR) |
1232 ((sband->ht_info.ampdu_density << 2) &
1233 IEEE80211_HT_CAP_AMPDU_DENSITY);
1234 *left -= sizeof(struct ieee80211_ht_cap);
1235 }
1236 #else
1237 static inline void iwl4965_ht_conf(struct iwl_priv *priv,
1238 struct ieee80211_bss_conf *bss_conf)
1239 {
1240 }
1241 static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
1242 u8 *pos, int *left)
1243 {
1244 }
1245 #endif
1246
1247
1248 /**
1249 * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
1250 */
1251 static u16 iwl4965_fill_probe_req(struct iwl_priv *priv,
1252 enum ieee80211_band band,
1253 struct ieee80211_mgmt *frame,
1254 int left, int is_direct)
1255 {
1256 int len = 0;
1257 u8 *pos = NULL;
1258 u16 active_rates, ret_rates, cck_rates, active_rate_basic;
1259 const struct ieee80211_supported_band *sband =
1260 iwl_get_hw_mode(priv, band);
1261
1262 /* Make sure there is enough space for the probe request,
1263 * two mandatory IEs and the data */
1264 left -= 24;
1265 if (left < 0)
1266 return 0;
1267 len += 24;
1268
1269 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1270 memcpy(frame->da, iwl4965_broadcast_addr, ETH_ALEN);
1271 memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1272 memcpy(frame->bssid, iwl4965_broadcast_addr, ETH_ALEN);
1273 frame->seq_ctrl = 0;
1274
1275 /* fill in our indirect SSID IE */
1276 /* ...next IE... */
1277
1278 left -= 2;
1279 if (left < 0)
1280 return 0;
1281 len += 2;
1282 pos = &(frame->u.probe_req.variable[0]);
1283 *pos++ = WLAN_EID_SSID;
1284 *pos++ = 0;
1285
1286 /* fill in our direct SSID IE... */
1287 if (is_direct) {
1288 /* ...next IE... */
1289 left -= 2 + priv->essid_len;
1290 if (left < 0)
1291 return 0;
1292 /* ... fill it in... */
1293 *pos++ = WLAN_EID_SSID;
1294 *pos++ = priv->essid_len;
1295 memcpy(pos, priv->essid, priv->essid_len);
1296 pos += priv->essid_len;
1297 len += 2 + priv->essid_len;
1298 }
1299
1300 /* fill in supported rate */
1301 /* ...next IE... */
1302 left -= 2;
1303 if (left < 0)
1304 return 0;
1305
1306 /* ... fill it in... */
1307 *pos++ = WLAN_EID_SUPP_RATES;
1308 *pos = 0;
1309
1310 /* exclude 60M rate */
1311 active_rates = priv->rates_mask;
1312 active_rates &= ~IWL_RATE_60M_MASK;
1313
1314 active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
1315
1316 cck_rates = IWL_CCK_RATES_MASK & active_rates;
1317 ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
1318 active_rate_basic, &left);
1319 active_rates &= ~ret_rates;
1320
1321 ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
1322 active_rate_basic, &left);
1323 active_rates &= ~ret_rates;
1324
1325 len += 2 + *pos;
1326 pos += (*pos) + 1;
1327 if (active_rates == 0)
1328 goto fill_end;
1329
1330 /* fill in supported extended rate */
1331 /* ...next IE... */
1332 left -= 2;
1333 if (left < 0)
1334 return 0;
1335 /* ... fill it in... */
1336 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1337 *pos = 0;
1338 iwl4965_supported_rate_to_ie(pos, active_rates,
1339 active_rate_basic, &left);
1340 if (*pos > 0)
1341 len += 2 + *pos;
1342
1343 fill_end:
1344 /* fill in HT IE */
1345 left -= 2;
1346 if (left < 0)
1347 return 0;
1348
1349 *pos++ = WLAN_EID_HT_CAPABILITY;
1350 *pos = 0;
1351
1352 iwl_ht_cap_to_ie(sband, pos, &left);
1353
1354 if (*pos > 0)
1355 len += 2 + *pos;
1356 return (u16)len;
1357 }
1358
1359 /*
1360 * QoS support
1361 */
1362 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
1363 struct iwl4965_qosparam_cmd *qos)
1364 {
1365
1366 return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1367 sizeof(struct iwl4965_qosparam_cmd), qos);
1368 }
1369
1370 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
1371 {
1372 unsigned long flags;
1373
1374 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1375 return;
1376
1377 if (!priv->qos_data.qos_enable)
1378 return;
1379
1380 spin_lock_irqsave(&priv->lock, flags);
1381 priv->qos_data.def_qos_parm.qos_flags = 0;
1382
1383 if (priv->qos_data.qos_cap.q_AP.queue_request &&
1384 !priv->qos_data.qos_cap.q_AP.txop_request)
1385 priv->qos_data.def_qos_parm.qos_flags |=
1386 QOS_PARAM_FLG_TXOP_TYPE_MSK;
1387 if (priv->qos_data.qos_active)
1388 priv->qos_data.def_qos_parm.qos_flags |=
1389 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1390
1391 #ifdef CONFIG_IWL4965_HT
1392 if (priv->current_ht_config.is_ht)
1393 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
1394 #endif /* CONFIG_IWL4965_HT */
1395
1396 spin_unlock_irqrestore(&priv->lock, flags);
1397
1398 if (force || iwl_is_associated(priv)) {
1399 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
1400 priv->qos_data.qos_active,
1401 priv->qos_data.def_qos_parm.qos_flags);
1402
1403 iwl4965_send_qos_params_command(priv,
1404 &(priv->qos_data.def_qos_parm));
1405 }
1406 }
1407
1408 int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
1409 {
1410 /* Filter incoming packets to determine if they are targeted toward
1411 * this network, discarding packets coming from ourselves */
1412 switch (priv->iw_mode) {
1413 case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
1414 /* packets from our adapter are dropped (echo) */
1415 if (!compare_ether_addr(header->addr2, priv->mac_addr))
1416 return 0;
1417 /* {broad,multi}cast packets to our IBSS go through */
1418 if (is_multicast_ether_addr(header->addr1))
1419 return !compare_ether_addr(header->addr3, priv->bssid);
1420 /* packets to our adapter go through */
1421 return !compare_ether_addr(header->addr1, priv->mac_addr);
1422 case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
1423 /* packets from our adapter are dropped (echo) */
1424 if (!compare_ether_addr(header->addr3, priv->mac_addr))
1425 return 0;
1426 /* {broad,multi}cast packets to our BSS go through */
1427 if (is_multicast_ether_addr(header->addr1))
1428 return !compare_ether_addr(header->addr2, priv->bssid);
1429 /* packets to our adapter go through */
1430 return !compare_ether_addr(header->addr1, priv->mac_addr);
1431 default:
1432 break;
1433 }
1434
1435 return 1;
1436 }
1437
1438 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1439
1440 static const char *iwl4965_get_tx_fail_reason(u32 status)
1441 {
1442 switch (status & TX_STATUS_MSK) {
1443 case TX_STATUS_SUCCESS:
1444 return "SUCCESS";
1445 TX_STATUS_ENTRY(SHORT_LIMIT);
1446 TX_STATUS_ENTRY(LONG_LIMIT);
1447 TX_STATUS_ENTRY(FIFO_UNDERRUN);
1448 TX_STATUS_ENTRY(MGMNT_ABORT);
1449 TX_STATUS_ENTRY(NEXT_FRAG);
1450 TX_STATUS_ENTRY(LIFE_EXPIRE);
1451 TX_STATUS_ENTRY(DEST_PS);
1452 TX_STATUS_ENTRY(ABORTED);
1453 TX_STATUS_ENTRY(BT_RETRY);
1454 TX_STATUS_ENTRY(STA_INVALID);
1455 TX_STATUS_ENTRY(FRAG_DROPPED);
1456 TX_STATUS_ENTRY(TID_DISABLE);
1457 TX_STATUS_ENTRY(FRAME_FLUSHED);
1458 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
1459 TX_STATUS_ENTRY(TX_LOCKED);
1460 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
1461 }
1462
1463 return "UNKNOWN";
1464 }
1465
1466 /**
1467 * iwl4965_scan_cancel - Cancel any currently executing HW scan
1468 *
1469 * NOTE: priv->mutex is not required before calling this function
1470 */
1471 static int iwl4965_scan_cancel(struct iwl_priv *priv)
1472 {
1473 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1474 clear_bit(STATUS_SCANNING, &priv->status);
1475 return 0;
1476 }
1477
1478 if (test_bit(STATUS_SCANNING, &priv->status)) {
1479 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1480 IWL_DEBUG_SCAN("Queuing scan abort.\n");
1481 set_bit(STATUS_SCAN_ABORTING, &priv->status);
1482 queue_work(priv->workqueue, &priv->abort_scan);
1483
1484 } else
1485 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
1486
1487 return test_bit(STATUS_SCANNING, &priv->status);
1488 }
1489
1490 return 0;
1491 }
1492
1493 /**
1494 * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
1495 * @ms: amount of time to wait (in milliseconds) for scan to abort
1496 *
1497 * NOTE: priv->mutex must be held before calling this function
1498 */
1499 static int iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
1500 {
1501 unsigned long now = jiffies;
1502 int ret;
1503
1504 ret = iwl4965_scan_cancel(priv);
1505 if (ret && ms) {
1506 mutex_unlock(&priv->mutex);
1507 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
1508 test_bit(STATUS_SCANNING, &priv->status))
1509 msleep(1);
1510 mutex_lock(&priv->mutex);
1511
1512 return test_bit(STATUS_SCANNING, &priv->status);
1513 }
1514
1515 return ret;
1516 }
1517
1518 static void iwl4965_sequence_reset(struct iwl_priv *priv)
1519 {
1520 /* Reset ieee stats */
1521
1522 /* We don't reset the net_device_stats (ieee->stats) on
1523 * re-association */
1524
1525 priv->last_seq_num = -1;
1526 priv->last_frag_num = -1;
1527 priv->last_packet_time = 0;
1528
1529 iwl4965_scan_cancel(priv);
1530 }
1531
1532 #define MAX_UCODE_BEACON_INTERVAL 4096
1533 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
1534
1535 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
1536 {
1537 u16 new_val = 0;
1538 u16 beacon_factor = 0;
1539
1540 beacon_factor =
1541 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
1542 / MAX_UCODE_BEACON_INTERVAL;
1543 new_val = beacon_val / beacon_factor;
1544
1545 return cpu_to_le16(new_val);
1546 }
1547
1548 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
1549 {
1550 u64 interval_tm_unit;
1551 u64 tsf, result;
1552 unsigned long flags;
1553 struct ieee80211_conf *conf = NULL;
1554 u16 beacon_int = 0;
1555
1556 conf = ieee80211_get_hw_conf(priv->hw);
1557
1558 spin_lock_irqsave(&priv->lock, flags);
1559 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
1560 priv->rxon_timing.timestamp.dw[0] =
1561 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
1562
1563 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1564
1565 tsf = priv->timestamp;
1566
1567 beacon_int = priv->beacon_int;
1568 spin_unlock_irqrestore(&priv->lock, flags);
1569
1570 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
1571 if (beacon_int == 0) {
1572 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1573 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1574 } else {
1575 priv->rxon_timing.beacon_interval =
1576 cpu_to_le16(beacon_int);
1577 priv->rxon_timing.beacon_interval =
1578 iwl4965_adjust_beacon_interval(
1579 le16_to_cpu(priv->rxon_timing.beacon_interval));
1580 }
1581
1582 priv->rxon_timing.atim_window = 0;
1583 } else {
1584 priv->rxon_timing.beacon_interval =
1585 iwl4965_adjust_beacon_interval(conf->beacon_int);
1586 /* TODO: we need to get atim_window from upper stack
1587 * for now we set to 0 */
1588 priv->rxon_timing.atim_window = 0;
1589 }
1590
1591 interval_tm_unit =
1592 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
1593 result = do_div(tsf, interval_tm_unit);
1594 priv->rxon_timing.beacon_init_val =
1595 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
1596
1597 IWL_DEBUG_ASSOC
1598 ("beacon interval %d beacon timer %d beacon tim %d\n",
1599 le16_to_cpu(priv->rxon_timing.beacon_interval),
1600 le32_to_cpu(priv->rxon_timing.beacon_init_val),
1601 le16_to_cpu(priv->rxon_timing.atim_window));
1602 }
1603
1604 static int iwl4965_scan_initiate(struct iwl_priv *priv)
1605 {
1606 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1607 IWL_ERROR("APs don't scan.\n");
1608 return 0;
1609 }
1610
1611 if (!iwl_is_ready_rf(priv)) {
1612 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1613 return -EIO;
1614 }
1615
1616 if (test_bit(STATUS_SCANNING, &priv->status)) {
1617 IWL_DEBUG_SCAN("Scan already in progress.\n");
1618 return -EAGAIN;
1619 }
1620
1621 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1622 IWL_DEBUG_SCAN("Scan request while abort pending. "
1623 "Queuing.\n");
1624 return -EAGAIN;
1625 }
1626
1627 IWL_DEBUG_INFO("Starting scan...\n");
1628 priv->scan_bands = 2;
1629 set_bit(STATUS_SCANNING, &priv->status);
1630 priv->scan_start = jiffies;
1631 priv->scan_pass_start = priv->scan_start;
1632
1633 queue_work(priv->workqueue, &priv->request_scan);
1634
1635 return 0;
1636 }
1637
1638
1639 static void iwl4965_set_flags_for_phymode(struct iwl_priv *priv,
1640 enum ieee80211_band band)
1641 {
1642 if (band == IEEE80211_BAND_5GHZ) {
1643 priv->staging_rxon.flags &=
1644 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1645 | RXON_FLG_CCK_MSK);
1646 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1647 } else {
1648 /* Copied from iwl4965_post_associate() */
1649 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1650 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1651 else
1652 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1653
1654 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
1655 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1656
1657 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1658 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1659 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1660 }
1661 }
1662
1663 /*
1664 * initialize rxon structure with default values from eeprom
1665 */
1666 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
1667 {
1668 const struct iwl_channel_info *ch_info;
1669
1670 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1671
1672 switch (priv->iw_mode) {
1673 case IEEE80211_IF_TYPE_AP:
1674 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1675 break;
1676
1677 case IEEE80211_IF_TYPE_STA:
1678 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1679 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1680 break;
1681
1682 case IEEE80211_IF_TYPE_IBSS:
1683 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1684 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1685 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1686 RXON_FILTER_ACCEPT_GRP_MSK;
1687 break;
1688
1689 case IEEE80211_IF_TYPE_MNTR:
1690 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
1691 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
1692 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
1693 break;
1694 default:
1695 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
1696 break;
1697 }
1698
1699 #if 0
1700 /* TODO: Figure out when short_preamble would be set and cache from
1701 * that */
1702 if (!hw_to_local(priv->hw)->short_preamble)
1703 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1704 else
1705 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1706 #endif
1707
1708 ch_info = iwl_get_channel_info(priv, priv->band,
1709 le16_to_cpu(priv->staging_rxon.channel));
1710
1711 if (!ch_info)
1712 ch_info = &priv->channel_info[0];
1713
1714 /*
1715 * in some case A channels are all non IBSS
1716 * in this case force B/G channel
1717 */
1718 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
1719 !(is_channel_ibss(ch_info)))
1720 ch_info = &priv->channel_info[0];
1721
1722 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1723 priv->band = ch_info->band;
1724
1725 iwl4965_set_flags_for_phymode(priv, priv->band);
1726
1727 priv->staging_rxon.ofdm_basic_rates =
1728 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1729 priv->staging_rxon.cck_basic_rates =
1730 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1731
1732 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
1733 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
1734 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1735 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1736 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1737 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1738 iwl_set_rxon_chain(priv);
1739 }
1740
1741 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
1742 {
1743 if (mode == IEEE80211_IF_TYPE_IBSS) {
1744 const struct iwl_channel_info *ch_info;
1745
1746 ch_info = iwl_get_channel_info(priv,
1747 priv->band,
1748 le16_to_cpu(priv->staging_rxon.channel));
1749
1750 if (!ch_info || !is_channel_ibss(ch_info)) {
1751 IWL_ERROR("channel %d not IBSS channel\n",
1752 le16_to_cpu(priv->staging_rxon.channel));
1753 return -EINVAL;
1754 }
1755 }
1756
1757 priv->iw_mode = mode;
1758
1759 iwl4965_connection_init_rx_config(priv);
1760 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1761
1762 iwlcore_clear_stations_table(priv);
1763
1764 /* dont commit rxon if rf-kill is on*/
1765 if (!iwl_is_ready_rf(priv))
1766 return -EAGAIN;
1767
1768 cancel_delayed_work(&priv->scan_check);
1769 if (iwl4965_scan_cancel_timeout(priv, 100)) {
1770 IWL_WARNING("Aborted scan still in progress after 100ms\n");
1771 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
1772 return -EAGAIN;
1773 }
1774
1775 iwl4965_commit_rxon(priv);
1776
1777 return 0;
1778 }
1779
1780 static void iwl4965_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
1781 struct ieee80211_tx_control *ctl,
1782 struct iwl_cmd *cmd,
1783 struct sk_buff *skb_frag,
1784 int sta_id)
1785 {
1786 struct iwl_hw_key *keyinfo = &priv->stations[sta_id].keyinfo;
1787 struct iwl_wep_key *wepkey;
1788 int keyidx = 0;
1789
1790 BUG_ON(ctl->hw_key->hw_key_idx > 3);
1791
1792 switch (keyinfo->alg) {
1793 case ALG_CCMP:
1794 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
1795 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
1796 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
1797 cmd->cmd.tx.tx_flags |= TX_CMD_FLG_AGG_CCMP_MSK;
1798 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
1799 break;
1800
1801 case ALG_TKIP:
1802 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
1803 ieee80211_get_tkip_key(keyinfo->conf, skb_frag,
1804 IEEE80211_TKIP_P2_KEY, cmd->cmd.tx.key);
1805 IWL_DEBUG_TX("tx_cmd with tkip hwcrypto\n");
1806 break;
1807
1808 case ALG_WEP:
1809 wepkey = &priv->wep_keys[ctl->hw_key->hw_key_idx];
1810 cmd->cmd.tx.sec_ctl = 0;
1811 if (priv->default_wep_key) {
1812 /* the WEP key was sent as static */
1813 keyidx = ctl->hw_key->hw_key_idx;
1814 memcpy(&cmd->cmd.tx.key[3], wepkey->key,
1815 wepkey->key_size);
1816 if (wepkey->key_size == WEP_KEY_LEN_128)
1817 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
1818 } else {
1819 /* the WEP key was sent as dynamic */
1820 keyidx = keyinfo->keyidx;
1821 memcpy(&cmd->cmd.tx.key[3], keyinfo->key,
1822 keyinfo->keylen);
1823 if (keyinfo->keylen == WEP_KEY_LEN_128)
1824 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
1825 }
1826
1827 cmd->cmd.tx.sec_ctl |= (TX_CMD_SEC_WEP |
1828 (keyidx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT);
1829
1830 IWL_DEBUG_TX("Configuring packet for WEP encryption "
1831 "with key %d\n", keyidx);
1832 break;
1833
1834 default:
1835 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
1836 break;
1837 }
1838 }
1839
1840 /*
1841 * handle build REPLY_TX command notification.
1842 */
1843 static void iwl4965_build_tx_cmd_basic(struct iwl_priv *priv,
1844 struct iwl_cmd *cmd,
1845 struct ieee80211_tx_control *ctrl,
1846 struct ieee80211_hdr *hdr,
1847 int is_unicast, u8 std_id)
1848 {
1849 __le16 *qc;
1850 u16 fc = le16_to_cpu(hdr->frame_control);
1851 __le32 tx_flags = cmd->cmd.tx.tx_flags;
1852
1853 cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
1854 if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
1855 tx_flags |= TX_CMD_FLG_ACK_MSK;
1856 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
1857 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
1858 if (ieee80211_is_probe_response(fc) &&
1859 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
1860 tx_flags |= TX_CMD_FLG_TSF_MSK;
1861 } else {
1862 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
1863 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
1864 }
1865
1866 if (ieee80211_is_back_request(fc))
1867 tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK;
1868
1869
1870 cmd->cmd.tx.sta_id = std_id;
1871 if (ieee80211_get_morefrag(hdr))
1872 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
1873
1874 qc = ieee80211_get_qos_ctrl(hdr);
1875 if (qc) {
1876 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
1877 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
1878 } else
1879 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
1880
1881 if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
1882 tx_flags |= TX_CMD_FLG_RTS_MSK;
1883 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
1884 } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
1885 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
1886 tx_flags |= TX_CMD_FLG_CTS_MSK;
1887 }
1888
1889 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
1890 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
1891
1892 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
1893 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
1894 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
1895 (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
1896 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
1897 else
1898 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
1899 } else {
1900 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
1901 }
1902
1903 cmd->cmd.tx.driver_txop = 0;
1904 cmd->cmd.tx.tx_flags = tx_flags;
1905 cmd->cmd.tx.next_frame_len = 0;
1906 }
1907 static void iwl_update_tx_stats(struct iwl_priv *priv, u16 fc, u16 len)
1908 {
1909 /* 0 - mgmt, 1 - cnt, 2 - data */
1910 int idx = (fc & IEEE80211_FCTL_FTYPE) >> 2;
1911 priv->tx_stats[idx].cnt++;
1912 priv->tx_stats[idx].bytes += len;
1913 }
1914 /**
1915 * iwl4965_get_sta_id - Find station's index within station table
1916 *
1917 * If new IBSS station, create new entry in station table
1918 */
1919 static int iwl4965_get_sta_id(struct iwl_priv *priv,
1920 struct ieee80211_hdr *hdr)
1921 {
1922 int sta_id;
1923 u16 fc = le16_to_cpu(hdr->frame_control);
1924 DECLARE_MAC_BUF(mac);
1925
1926 /* If this frame is broadcast or management, use broadcast station id */
1927 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
1928 is_multicast_ether_addr(hdr->addr1))
1929 return priv->hw_params.bcast_sta_id;
1930
1931 switch (priv->iw_mode) {
1932
1933 /* If we are a client station in a BSS network, use the special
1934 * AP station entry (that's the only station we communicate with) */
1935 case IEEE80211_IF_TYPE_STA:
1936 return IWL_AP_ID;
1937
1938 /* If we are an AP, then find the station, or use BCAST */
1939 case IEEE80211_IF_TYPE_AP:
1940 sta_id = iwl_find_station(priv, hdr->addr1);
1941 if (sta_id != IWL_INVALID_STATION)
1942 return sta_id;
1943 return priv->hw_params.bcast_sta_id;
1944
1945 /* If this frame is going out to an IBSS network, find the station,
1946 * or create a new station table entry */
1947 case IEEE80211_IF_TYPE_IBSS:
1948 sta_id = iwl_find_station(priv, hdr->addr1);
1949 if (sta_id != IWL_INVALID_STATION)
1950 return sta_id;
1951
1952 /* Create new station table entry */
1953 sta_id = iwl4965_add_station_flags(priv, hdr->addr1,
1954 0, CMD_ASYNC, NULL);
1955
1956 if (sta_id != IWL_INVALID_STATION)
1957 return sta_id;
1958
1959 IWL_DEBUG_DROP("Station %s not in station map. "
1960 "Defaulting to broadcast...\n",
1961 print_mac(mac, hdr->addr1));
1962 iwl_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
1963 return priv->hw_params.bcast_sta_id;
1964
1965 default:
1966 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
1967 return priv->hw_params.bcast_sta_id;
1968 }
1969 }
1970
1971 /*
1972 * start REPLY_TX command process
1973 */
1974 static int iwl4965_tx_skb(struct iwl_priv *priv,
1975 struct sk_buff *skb, struct ieee80211_tx_control *ctl)
1976 {
1977 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1978 struct iwl4965_tfd_frame *tfd;
1979 u32 *control_flags;
1980 int txq_id = ctl->queue;
1981 struct iwl4965_tx_queue *txq = NULL;
1982 struct iwl4965_queue *q = NULL;
1983 dma_addr_t phys_addr;
1984 dma_addr_t txcmd_phys;
1985 dma_addr_t scratch_phys;
1986 struct iwl_cmd *out_cmd = NULL;
1987 u16 len, idx, len_org;
1988 u8 id, hdr_len, unicast;
1989 u8 sta_id;
1990 u16 seq_number = 0;
1991 u16 fc;
1992 __le16 *qc;
1993 u8 wait_write_ptr = 0;
1994 unsigned long flags;
1995 int rc;
1996
1997 spin_lock_irqsave(&priv->lock, flags);
1998 if (iwl_is_rfkill(priv)) {
1999 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2000 goto drop_unlock;
2001 }
2002
2003 if (!priv->vif) {
2004 IWL_DEBUG_DROP("Dropping - !priv->vif\n");
2005 goto drop_unlock;
2006 }
2007
2008 if ((ctl->tx_rate->hw_value & 0xFF) == IWL_INVALID_RATE) {
2009 IWL_ERROR("ERROR: No TX rate available.\n");
2010 goto drop_unlock;
2011 }
2012
2013 unicast = !is_multicast_ether_addr(hdr->addr1);
2014 id = 0;
2015
2016 fc = le16_to_cpu(hdr->frame_control);
2017
2018 #ifdef CONFIG_IWLWIFI_DEBUG
2019 if (ieee80211_is_auth(fc))
2020 IWL_DEBUG_TX("Sending AUTH frame\n");
2021 else if (ieee80211_is_assoc_request(fc))
2022 IWL_DEBUG_TX("Sending ASSOC frame\n");
2023 else if (ieee80211_is_reassoc_request(fc))
2024 IWL_DEBUG_TX("Sending REASSOC frame\n");
2025 #endif
2026
2027 /* drop all data frame if we are not associated */
2028 if (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
2029 (!iwl_is_associated(priv) ||
2030 ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id) ||
2031 !priv->assoc_station_added)) {
2032 IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n");
2033 goto drop_unlock;
2034 }
2035
2036 spin_unlock_irqrestore(&priv->lock, flags);
2037
2038 hdr_len = ieee80211_get_hdrlen(fc);
2039
2040 /* Find (or create) index into station table for destination station */
2041 sta_id = iwl4965_get_sta_id(priv, hdr);
2042 if (sta_id == IWL_INVALID_STATION) {
2043 DECLARE_MAC_BUF(mac);
2044
2045 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2046 print_mac(mac, hdr->addr1));
2047 goto drop;
2048 }
2049
2050 IWL_DEBUG_TX("station Id %d\n", sta_id);
2051
2052 qc = ieee80211_get_qos_ctrl(hdr);
2053 if (qc) {
2054 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2055 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2056 IEEE80211_SCTL_SEQ;
2057 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2058 (hdr->seq_ctrl &
2059 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2060 seq_number += 0x10;
2061 #ifdef CONFIG_IWL4965_HT
2062 /* aggregation is on for this <sta,tid> */
2063 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
2064 txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
2065 priv->stations[sta_id].tid[tid].tfds_in_queue++;
2066 #endif /* CONFIG_IWL4965_HT */
2067 }
2068
2069 /* Descriptor for chosen Tx queue */
2070 txq = &priv->txq[txq_id];
2071 q = &txq->q;
2072
2073 spin_lock_irqsave(&priv->lock, flags);
2074
2075 /* Set up first empty TFD within this queue's circular TFD buffer */
2076 tfd = &txq->bd[q->write_ptr];
2077 memset(tfd, 0, sizeof(*tfd));
2078 control_flags = (u32 *) tfd;
2079 idx = get_cmd_index(q, q->write_ptr, 0);
2080
2081 /* Set up driver data for this TFD */
2082 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info));
2083 txq->txb[q->write_ptr].skb[0] = skb;
2084 memcpy(&(txq->txb[q->write_ptr].status.control),
2085 ctl, sizeof(struct ieee80211_tx_control));
2086
2087 /* Set up first empty entry in queue's array of Tx/cmd buffers */
2088 out_cmd = &txq->cmd[idx];
2089 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2090 memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2091
2092 /*
2093 * Set up the Tx-command (not MAC!) header.
2094 * Store the chosen Tx queue and TFD index within the sequence field;
2095 * after Tx, uCode's Tx response will return this value so driver can
2096 * locate the frame within the tx queue and do post-tx processing.
2097 */
2098 out_cmd->hdr.cmd = REPLY_TX;
2099 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2100 INDEX_TO_SEQ(q->write_ptr)));
2101
2102 /* Copy MAC header from skb into command buffer */
2103 memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2104
2105 /*
2106 * Use the first empty entry in this queue's command buffer array
2107 * to contain the Tx command and MAC header concatenated together
2108 * (payload data will be in another buffer).
2109 * Size of this varies, due to varying MAC header length.
2110 * If end is not dword aligned, we'll have 2 extra bytes at the end
2111 * of the MAC header (device reads on dword boundaries).
2112 * We'll tell device about this padding later.
2113 */
2114 len = priv->hw_params.tx_cmd_len +
2115 sizeof(struct iwl_cmd_header) + hdr_len;
2116
2117 len_org = len;
2118 len = (len + 3) & ~3;
2119
2120 if (len_org != len)
2121 len_org = 1;
2122 else
2123 len_org = 0;
2124
2125 /* Physical address of this Tx command's header (not MAC header!),
2126 * within command buffer array. */
2127 txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl_cmd) * idx +
2128 offsetof(struct iwl_cmd, hdr);
2129
2130 /* Add buffer containing Tx command and MAC(!) header to TFD's
2131 * first entry */
2132 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2133
2134 if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
2135 iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, sta_id);
2136
2137 /* Set up TFD's 2nd entry to point directly to remainder of skb,
2138 * if any (802.11 null frames have no payload). */
2139 len = skb->len - hdr_len;
2140 if (len) {
2141 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2142 len, PCI_DMA_TODEVICE);
2143 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2144 }
2145
2146 /* Tell 4965 about any 2-byte padding after MAC header */
2147 if (len_org)
2148 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
2149
2150 /* Total # bytes to be transmitted */
2151 len = (u16)skb->len;
2152 out_cmd->cmd.tx.len = cpu_to_le16(len);
2153
2154 /* TODO need this for burst mode later on */
2155 iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
2156
2157 /* set is_hcca to 0; it probably will never be implemented */
2158 iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
2159
2160 iwl_update_tx_stats(priv, fc, len);
2161
2162 scratch_phys = txcmd_phys + sizeof(struct iwl_cmd_header) +
2163 offsetof(struct iwl4965_tx_cmd, scratch);
2164 out_cmd->cmd.tx.dram_lsb_ptr = cpu_to_le32(scratch_phys);
2165 out_cmd->cmd.tx.dram_msb_ptr = iwl_get_dma_hi_address(scratch_phys);
2166
2167 if (!ieee80211_get_morefrag(hdr)) {
2168 txq->need_update = 1;
2169 if (qc) {
2170 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2171 priv->stations[sta_id].tid[tid].seq_number = seq_number;
2172 }
2173 } else {
2174 wait_write_ptr = 1;
2175 txq->need_update = 0;
2176 }
2177
2178 iwl_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2179 sizeof(out_cmd->cmd.tx));
2180
2181 iwl_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2182 ieee80211_get_hdrlen(fc));
2183
2184 /* Set up entry for this TFD in Tx byte-count array */
2185 priv->cfg->ops->lib->txq_update_byte_cnt_tbl(priv, txq, len);
2186
2187 /* Tell device the write index *just past* this latest filled TFD */
2188 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
2189 rc = iwl4965_tx_queue_update_write_ptr(priv, txq);
2190 spin_unlock_irqrestore(&priv->lock, flags);
2191
2192 if (rc)
2193 return rc;
2194
2195 if ((iwl4965_queue_space(q) < q->high_mark)
2196 && priv->mac80211_registered) {
2197 if (wait_write_ptr) {
2198 spin_lock_irqsave(&priv->lock, flags);
2199 txq->need_update = 1;
2200 iwl4965_tx_queue_update_write_ptr(priv, txq);
2201 spin_unlock_irqrestore(&priv->lock, flags);
2202 }
2203
2204 ieee80211_stop_queue(priv->hw, ctl->queue);
2205 }
2206
2207 return 0;
2208
2209 drop_unlock:
2210 spin_unlock_irqrestore(&priv->lock, flags);
2211 drop:
2212 return -1;
2213 }
2214
2215 static void iwl4965_set_rate(struct iwl_priv *priv)
2216 {
2217 const struct ieee80211_supported_band *hw = NULL;
2218 struct ieee80211_rate *rate;
2219 int i;
2220
2221 hw = iwl_get_hw_mode(priv, priv->band);
2222 if (!hw) {
2223 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2224 return;
2225 }
2226
2227 priv->active_rate = 0;
2228 priv->active_rate_basic = 0;
2229
2230 for (i = 0; i < hw->n_bitrates; i++) {
2231 rate = &(hw->bitrates[i]);
2232 if (rate->hw_value < IWL_RATE_COUNT)
2233 priv->active_rate |= (1 << rate->hw_value);
2234 }
2235
2236 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2237 priv->active_rate, priv->active_rate_basic);
2238
2239 /*
2240 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2241 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2242 * OFDM
2243 */
2244 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2245 priv->staging_rxon.cck_basic_rates =
2246 ((priv->active_rate_basic &
2247 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2248 else
2249 priv->staging_rxon.cck_basic_rates =
2250 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2251
2252 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2253 priv->staging_rxon.ofdm_basic_rates =
2254 ((priv->active_rate_basic &
2255 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2256 IWL_FIRST_OFDM_RATE) & 0xFF;
2257 else
2258 priv->staging_rxon.ofdm_basic_rates =
2259 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2260 }
2261
2262 void iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
2263 {
2264 unsigned long flags;
2265
2266 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2267 return;
2268
2269 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2270 disable_radio ? "OFF" : "ON");
2271
2272 if (disable_radio) {
2273 iwl4965_scan_cancel(priv);
2274 /* FIXME: This is a workaround for AP */
2275 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
2276 spin_lock_irqsave(&priv->lock, flags);
2277 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2278 CSR_UCODE_SW_BIT_RFKILL);
2279 spin_unlock_irqrestore(&priv->lock, flags);
2280 /* call the host command only if no hw rf-kill set */
2281 if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
2282 iwl_is_ready(priv))
2283 iwl4965_send_card_state(priv,
2284 CARD_STATE_CMD_DISABLE,
2285 0);
2286 set_bit(STATUS_RF_KILL_SW, &priv->status);
2287
2288 /* make sure mac80211 stop sending Tx frame */
2289 if (priv->mac80211_registered)
2290 ieee80211_stop_queues(priv->hw);
2291 }
2292 return;
2293 }
2294
2295 spin_lock_irqsave(&priv->lock, flags);
2296 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2297
2298 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2299 spin_unlock_irqrestore(&priv->lock, flags);
2300
2301 /* wake up ucode */
2302 msleep(10);
2303
2304 spin_lock_irqsave(&priv->lock, flags);
2305 iwl_read32(priv, CSR_UCODE_DRV_GP1);
2306 if (!iwl_grab_nic_access(priv))
2307 iwl_release_nic_access(priv);
2308 spin_unlock_irqrestore(&priv->lock, flags);
2309
2310 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2311 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2312 "disabled by HW switch\n");
2313 return;
2314 }
2315
2316 queue_work(priv->workqueue, &priv->restart);
2317 return;
2318 }
2319
2320 #define IWL_PACKET_RETRY_TIME HZ
2321
2322 int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
2323 {
2324 u16 sc = le16_to_cpu(header->seq_ctrl);
2325 u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
2326 u16 frag = sc & IEEE80211_SCTL_FRAG;
2327 u16 *last_seq, *last_frag;
2328 unsigned long *last_time;
2329
2330 switch (priv->iw_mode) {
2331 case IEEE80211_IF_TYPE_IBSS:{
2332 struct list_head *p;
2333 struct iwl4965_ibss_seq *entry = NULL;
2334 u8 *mac = header->addr2;
2335 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
2336
2337 __list_for_each(p, &priv->ibss_mac_hash[index]) {
2338 entry = list_entry(p, struct iwl4965_ibss_seq, list);
2339 if (!compare_ether_addr(entry->mac, mac))
2340 break;
2341 }
2342 if (p == &priv->ibss_mac_hash[index]) {
2343 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
2344 if (!entry) {
2345 IWL_ERROR("Cannot malloc new mac entry\n");
2346 return 0;
2347 }
2348 memcpy(entry->mac, mac, ETH_ALEN);
2349 entry->seq_num = seq;
2350 entry->frag_num = frag;
2351 entry->packet_time = jiffies;
2352 list_add(&entry->list, &priv->ibss_mac_hash[index]);
2353 return 0;
2354 }
2355 last_seq = &entry->seq_num;
2356 last_frag = &entry->frag_num;
2357 last_time = &entry->packet_time;
2358 break;
2359 }
2360 case IEEE80211_IF_TYPE_STA:
2361 last_seq = &priv->last_seq_num;
2362 last_frag = &priv->last_frag_num;
2363 last_time = &priv->last_packet_time;
2364 break;
2365 default:
2366 return 0;
2367 }
2368 if ((*last_seq == seq) &&
2369 time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
2370 if (*last_frag == frag)
2371 goto drop;
2372 if (*last_frag + 1 != frag)
2373 /* out-of-order fragment */
2374 goto drop;
2375 } else
2376 *last_seq = seq;
2377
2378 *last_frag = frag;
2379 *last_time = jiffies;
2380 return 0;
2381
2382 drop:
2383 return 1;
2384 }
2385
2386 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
2387
2388 #include "iwl-spectrum.h"
2389
2390 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
2391 #define BEACON_TIME_MASK_HIGH 0xFF000000
2392 #define TIME_UNIT 1024
2393
2394 /*
2395 * extended beacon time format
2396 * time in usec will be changed into a 32-bit value in 8:24 format
2397 * the high 1 byte is the beacon counts
2398 * the lower 3 bytes is the time in usec within one beacon interval
2399 */
2400
2401 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
2402 {
2403 u32 quot;
2404 u32 rem;
2405 u32 interval = beacon_interval * 1024;
2406
2407 if (!interval || !usec)
2408 return 0;
2409
2410 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
2411 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
2412
2413 return (quot << 24) + rem;
2414 }
2415
2416 /* base is usually what we get from ucode with each received frame,
2417 * the same as HW timer counter counting down
2418 */
2419
2420 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
2421 {
2422 u32 base_low = base & BEACON_TIME_MASK_LOW;
2423 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
2424 u32 interval = beacon_interval * TIME_UNIT;
2425 u32 res = (base & BEACON_TIME_MASK_HIGH) +
2426 (addon & BEACON_TIME_MASK_HIGH);
2427
2428 if (base_low > addon_low)
2429 res += base_low - addon_low;
2430 else if (base_low < addon_low) {
2431 res += interval + base_low - addon_low;
2432 res += (1 << 24);
2433 } else
2434 res += (1 << 24);
2435
2436 return cpu_to_le32(res);
2437 }
2438
2439 static int iwl4965_get_measurement(struct iwl_priv *priv,
2440 struct ieee80211_measurement_params *params,
2441 u8 type)
2442 {
2443 struct iwl4965_spectrum_cmd spectrum;
2444 struct iwl4965_rx_packet *res;
2445 struct iwl_host_cmd cmd = {
2446 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
2447 .data = (void *)&spectrum,
2448 .meta.flags = CMD_WANT_SKB,
2449 };
2450 u32 add_time = le64_to_cpu(params->start_time);
2451 int rc;
2452 int spectrum_resp_status;
2453 int duration = le16_to_cpu(params->duration);
2454
2455 if (iwl_is_associated(priv))
2456 add_time =
2457 iwl4965_usecs_to_beacons(
2458 le64_to_cpu(params->start_time) - priv->last_tsf,
2459 le16_to_cpu(priv->rxon_timing.beacon_interval));
2460
2461 memset(&spectrum, 0, sizeof(spectrum));
2462
2463 spectrum.channel_count = cpu_to_le16(1);
2464 spectrum.flags =
2465 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
2466 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
2467 cmd.len = sizeof(spectrum);
2468 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
2469
2470 if (iwl_is_associated(priv))
2471 spectrum.start_time =
2472 iwl4965_add_beacon_time(priv->last_beacon_time,
2473 add_time,
2474 le16_to_cpu(priv->rxon_timing.beacon_interval));
2475 else
2476 spectrum.start_time = 0;
2477
2478 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
2479 spectrum.channels[0].channel = params->channel;
2480 spectrum.channels[0].type = type;
2481 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
2482 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
2483 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
2484
2485 rc = iwl_send_cmd_sync(priv, &cmd);
2486 if (rc)
2487 return rc;
2488
2489 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
2490 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
2491 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
2492 rc = -EIO;
2493 }
2494
2495 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
2496 switch (spectrum_resp_status) {
2497 case 0: /* Command will be handled */
2498 if (res->u.spectrum.id != 0xff) {
2499 IWL_DEBUG_INFO
2500 ("Replaced existing measurement: %d\n",
2501 res->u.spectrum.id);
2502 priv->measurement_status &= ~MEASUREMENT_READY;
2503 }
2504 priv->measurement_status |= MEASUREMENT_ACTIVE;
2505 rc = 0;
2506 break;
2507
2508 case 1: /* Command will not be handled */
2509 rc = -EAGAIN;
2510 break;
2511 }
2512
2513 dev_kfree_skb_any(cmd.meta.u.skb);
2514
2515 return rc;
2516 }
2517 #endif
2518
2519 static void iwl4965_txstatus_to_ieee(struct iwl_priv *priv,
2520 struct iwl4965_tx_info *tx_sta)
2521 {
2522
2523 tx_sta->status.ack_signal = 0;
2524 tx_sta->status.excessive_retries = 0;
2525
2526 if (in_interrupt())
2527 ieee80211_tx_status_irqsafe(priv->hw,
2528 tx_sta->skb[0], &(tx_sta->status));
2529 else
2530 ieee80211_tx_status(priv->hw,
2531 tx_sta->skb[0], &(tx_sta->status));
2532
2533 tx_sta->skb[0] = NULL;
2534 }
2535
2536 /**
2537 * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
2538 *
2539 * When FW advances 'R' index, all entries between old and new 'R' index
2540 * need to be reclaimed. As result, some free space forms. If there is
2541 * enough free space (> low mark), wake the stack that feeds us.
2542 */
2543 int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
2544 {
2545 struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
2546 struct iwl4965_queue *q = &txq->q;
2547 int nfreed = 0;
2548
2549 if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
2550 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
2551 "is out of range [0-%d] %d %d.\n", txq_id,
2552 index, q->n_bd, q->write_ptr, q->read_ptr);
2553 return 0;
2554 }
2555
2556 for (index = iwl_queue_inc_wrap(index, q->n_bd);
2557 q->read_ptr != index;
2558 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
2559 if (txq_id != IWL_CMD_QUEUE_NUM) {
2560 iwl4965_txstatus_to_ieee(priv,
2561 &(txq->txb[txq->q.read_ptr]));
2562 iwl4965_hw_txq_free_tfd(priv, txq);
2563 } else if (nfreed > 1) {
2564 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
2565 q->write_ptr, q->read_ptr);
2566 queue_work(priv->workqueue, &priv->restart);
2567 }
2568 nfreed++;
2569 }
2570
2571 return nfreed;
2572 }
2573
2574 static int iwl4965_is_tx_success(u32 status)
2575 {
2576 status &= TX_STATUS_MSK;
2577 return (status == TX_STATUS_SUCCESS)
2578 || (status == TX_STATUS_DIRECT_DONE);
2579 }
2580
2581 /******************************************************************************
2582 *
2583 * Generic RX handler implementations
2584 *
2585 ******************************************************************************/
2586 #ifdef CONFIG_IWL4965_HT
2587
2588 static inline int iwl4965_get_ra_sta_id(struct iwl_priv *priv,
2589 struct ieee80211_hdr *hdr)
2590 {
2591 if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
2592 return IWL_AP_ID;
2593 else {
2594 u8 *da = ieee80211_get_DA(hdr);
2595 return iwl_find_station(priv, da);
2596 }
2597 }
2598
2599 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
2600 struct iwl_priv *priv, int txq_id, int idx)
2601 {
2602 if (priv->txq[txq_id].txb[idx].skb[0])
2603 return (struct ieee80211_hdr *)priv->txq[txq_id].
2604 txb[idx].skb[0]->data;
2605 return NULL;
2606 }
2607
2608 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
2609 {
2610 __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
2611 tx_resp->frame_count);
2612 return le32_to_cpu(*scd_ssn) & MAX_SN;
2613
2614 }
2615
2616 /**
2617 * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
2618 */
2619 static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
2620 struct iwl_ht_agg *agg,
2621 struct iwl4965_tx_resp_agg *tx_resp,
2622 u16 start_idx)
2623 {
2624 u16 status;
2625 struct agg_tx_status *frame_status = &tx_resp->status;
2626 struct ieee80211_tx_status *tx_status = NULL;
2627 struct ieee80211_hdr *hdr = NULL;
2628 int i, sh;
2629 int txq_id, idx;
2630 u16 seq;
2631
2632 if (agg->wait_for_ba)
2633 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
2634
2635 agg->frame_count = tx_resp->frame_count;
2636 agg->start_idx = start_idx;
2637 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
2638 agg->bitmap = 0;
2639
2640 /* # frames attempted by Tx command */
2641 if (agg->frame_count == 1) {
2642 /* Only one frame was attempted; no block-ack will arrive */
2643 status = le16_to_cpu(frame_status[0].status);
2644 seq = le16_to_cpu(frame_status[0].sequence);
2645 idx = SEQ_TO_INDEX(seq);
2646 txq_id = SEQ_TO_QUEUE(seq);
2647
2648 /* FIXME: code repetition */
2649 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
2650 agg->frame_count, agg->start_idx, idx);
2651
2652 tx_status = &(priv->txq[txq_id].txb[idx].status);
2653 tx_status->retry_count = tx_resp->failure_frame;
2654 tx_status->control.flags &= ~IEEE80211_TXCTL_AMPDU;
2655 tx_status->flags = iwl4965_is_tx_success(status)?
2656 IEEE80211_TX_STATUS_ACK : 0;
2657 iwl4965_hwrate_to_tx_control(priv,
2658 le32_to_cpu(tx_resp->rate_n_flags),
2659 &tx_status->control);
2660 /* FIXME: code repetition end */
2661
2662 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
2663 status & 0xff, tx_resp->failure_frame);
2664 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
2665 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
2666
2667 agg->wait_for_ba = 0;
2668 } else {
2669 /* Two or more frames were attempted; expect block-ack */
2670 u64 bitmap = 0;
2671 int start = agg->start_idx;
2672
2673 /* Construct bit-map of pending frames within Tx window */
2674 for (i = 0; i < agg->frame_count; i++) {
2675 u16 sc;
2676 status = le16_to_cpu(frame_status[i].status);
2677 seq = le16_to_cpu(frame_status[i].sequence);
2678 idx = SEQ_TO_INDEX(seq);
2679 txq_id = SEQ_TO_QUEUE(seq);
2680
2681 if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
2682 AGG_TX_STATE_ABORT_MSK))
2683 continue;
2684
2685 IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
2686 agg->frame_count, txq_id, idx);
2687
2688 hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
2689
2690 sc = le16_to_cpu(hdr->seq_ctrl);
2691 if (idx != (SEQ_TO_SN(sc) & 0xff)) {
2692 IWL_ERROR("BUG_ON idx doesn't match seq control"
2693 " idx=%d, seq_idx=%d, seq=%d\n",
2694 idx, SEQ_TO_SN(sc),
2695 hdr->seq_ctrl);
2696 return -1;
2697 }
2698
2699 IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
2700 i, idx, SEQ_TO_SN(sc));
2701
2702 sh = idx - start;
2703 if (sh > 64) {
2704 sh = (start - idx) + 0xff;
2705 bitmap = bitmap << sh;
2706 sh = 0;
2707 start = idx;
2708 } else if (sh < -64)
2709 sh = 0xff - (start - idx);
2710 else if (sh < 0) {
2711 sh = start - idx;
2712 start = idx;
2713 bitmap = bitmap << sh;
2714 sh = 0;
2715 }
2716 bitmap |= (1 << sh);
2717 IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
2718 start, (u32)(bitmap & 0xFFFFFFFF));
2719 }
2720
2721 agg->bitmap = bitmap;
2722 agg->start_idx = start;
2723 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
2724 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
2725 agg->frame_count, agg->start_idx,
2726 (unsigned long long)agg->bitmap);
2727
2728 if (bitmap)
2729 agg->wait_for_ba = 1;
2730 }
2731 return 0;
2732 }
2733 #endif
2734
2735 /**
2736 * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
2737 */
2738 static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
2739 struct iwl_rx_mem_buffer *rxb)
2740 {
2741 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
2742 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
2743 int txq_id = SEQ_TO_QUEUE(sequence);
2744 int index = SEQ_TO_INDEX(sequence);
2745 struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
2746 struct ieee80211_tx_status *tx_status;
2747 struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
2748 u32 status = le32_to_cpu(tx_resp->status);
2749 #ifdef CONFIG_IWL4965_HT
2750 int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
2751 struct ieee80211_hdr *hdr;
2752 __le16 *qc;
2753 #endif
2754
2755 if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
2756 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
2757 "is out of range [0-%d] %d %d\n", txq_id,
2758 index, txq->q.n_bd, txq->q.write_ptr,
2759 txq->q.read_ptr);
2760 return;
2761 }
2762
2763 #ifdef CONFIG_IWL4965_HT
2764 hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
2765 qc = ieee80211_get_qos_ctrl(hdr);
2766
2767 if (qc)
2768 tid = le16_to_cpu(*qc) & 0xf;
2769
2770 sta_id = iwl4965_get_ra_sta_id(priv, hdr);
2771 if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
2772 IWL_ERROR("Station not known\n");
2773 return;
2774 }
2775
2776 if (txq->sched_retry) {
2777 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
2778 struct iwl_ht_agg *agg = NULL;
2779
2780 if (!qc)
2781 return;
2782
2783 agg = &priv->stations[sta_id].tid[tid].agg;
2784
2785 iwl4965_tx_status_reply_tx(priv, agg,
2786 (struct iwl4965_tx_resp_agg *)tx_resp, index);
2787
2788 if ((tx_resp->frame_count == 1) &&
2789 !iwl4965_is_tx_success(status)) {
2790 /* TODO: send BAR */
2791 }
2792
2793 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
2794 int freed, ampdu_q;
2795 index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
2796 IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
2797 "%d index %d\n", scd_ssn , index);
2798 freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
2799 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
2800
2801 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
2802 txq_id >= 0 && priv->mac80211_registered &&
2803 agg->state != IWL_EMPTYING_HW_QUEUE_DELBA) {
2804 /* calculate mac80211 ampdu sw queue to wake */
2805 ampdu_q = txq_id - IWL_BACK_QUEUE_FIRST_ID +
2806 priv->hw->queues;
2807 if (agg->state == IWL_AGG_OFF)
2808 ieee80211_wake_queue(priv->hw, txq_id);
2809 else
2810 ieee80211_wake_queue(priv->hw, ampdu_q);
2811 }
2812 iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
2813 }
2814 } else {
2815 #endif /* CONFIG_IWL4965_HT */
2816 tx_status = &(txq->txb[txq->q.read_ptr].status);
2817
2818 tx_status->retry_count = tx_resp->failure_frame;
2819 tx_status->flags =
2820 iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
2821 iwl4965_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags),
2822 &tx_status->control);
2823
2824 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
2825 "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
2826 status, le32_to_cpu(tx_resp->rate_n_flags),
2827 tx_resp->failure_frame);
2828
2829 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
2830 if (index != -1) {
2831 int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
2832 #ifdef CONFIG_IWL4965_HT
2833 if (tid != MAX_TID_COUNT)
2834 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
2835 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
2836 (txq_id >= 0) && priv->mac80211_registered)
2837 ieee80211_wake_queue(priv->hw, txq_id);
2838 if (tid != MAX_TID_COUNT)
2839 iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
2840 #endif
2841 }
2842 #ifdef CONFIG_IWL4965_HT
2843 }
2844 #endif /* CONFIG_IWL4965_HT */
2845
2846 if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
2847 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
2848 }
2849
2850
2851 static void iwl4965_rx_reply_alive(struct iwl_priv *priv,
2852 struct iwl_rx_mem_buffer *rxb)
2853 {
2854 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
2855 struct iwl4965_alive_resp *palive;
2856 struct delayed_work *pwork;
2857
2858 palive = &pkt->u.alive_frame;
2859
2860 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
2861 "0x%01X 0x%01X\n",
2862 palive->is_valid, palive->ver_type,
2863 palive->ver_subtype);
2864
2865 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
2866 IWL_DEBUG_INFO("Initialization Alive received.\n");
2867 memcpy(&priv->card_alive_init,
2868 &pkt->u.alive_frame,
2869 sizeof(struct iwl4965_init_alive_resp));
2870 pwork = &priv->init_alive_start;
2871 } else {
2872 IWL_DEBUG_INFO("Runtime Alive received.\n");
2873 memcpy(&priv->card_alive, &pkt->u.alive_frame,
2874 sizeof(struct iwl4965_alive_resp));
2875 pwork = &priv->alive_start;
2876 }
2877
2878 /* We delay the ALIVE response by 5ms to
2879 * give the HW RF Kill time to activate... */
2880 if (palive->is_valid == UCODE_VALID_OK)
2881 queue_delayed_work(priv->workqueue, pwork,
2882 msecs_to_jiffies(5));
2883 else
2884 IWL_WARNING("uCode did not respond OK.\n");
2885 }
2886
2887 static void iwl4965_rx_reply_add_sta(struct iwl_priv *priv,
2888 struct iwl_rx_mem_buffer *rxb)
2889 {
2890 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
2891
2892 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
2893 return;
2894 }
2895
2896 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
2897 struct iwl_rx_mem_buffer *rxb)
2898 {
2899 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
2900
2901 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
2902 "seq 0x%04X ser 0x%08X\n",
2903 le32_to_cpu(pkt->u.err_resp.error_type),
2904 get_cmd_string(pkt->u.err_resp.cmd_id),
2905 pkt->u.err_resp.cmd_id,
2906 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2907 le32_to_cpu(pkt->u.err_resp.error_info));
2908 }
2909
2910 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2911
2912 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
2913 {
2914 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
2915 struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon;
2916 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
2917 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
2918 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
2919 rxon->channel = csa->channel;
2920 priv->staging_rxon.channel = csa->channel;
2921 }
2922
2923 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
2924 struct iwl_rx_mem_buffer *rxb)
2925 {
2926 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
2927 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
2928 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
2929
2930 if (!report->state) {
2931 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
2932 "Spectrum Measure Notification: Start\n");
2933 return;
2934 }
2935
2936 memcpy(&priv->measure_report, report, sizeof(*report));
2937 priv->measurement_status |= MEASUREMENT_READY;
2938 #endif
2939 }
2940
2941 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
2942 struct iwl_rx_mem_buffer *rxb)
2943 {
2944 #ifdef CONFIG_IWLWIFI_DEBUG
2945 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
2946 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
2947 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
2948 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2949 #endif
2950 }
2951
2952 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2953 struct iwl_rx_mem_buffer *rxb)
2954 {
2955 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
2956 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
2957 "notification for %s:\n",
2958 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
2959 iwl_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
2960 }
2961
2962 static void iwl4965_bg_beacon_update(struct work_struct *work)
2963 {
2964 struct iwl_priv *priv =
2965 container_of(work, struct iwl_priv, beacon_update);
2966 struct sk_buff *beacon;
2967
2968 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
2969 beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL);
2970
2971 if (!beacon) {
2972 IWL_ERROR("update beacon failed\n");
2973 return;
2974 }
2975
2976 mutex_lock(&priv->mutex);
2977 /* new beacon skb is allocated every time; dispose previous.*/
2978 if (priv->ibss_beacon)
2979 dev_kfree_skb(priv->ibss_beacon);
2980
2981 priv->ibss_beacon = beacon;
2982 mutex_unlock(&priv->mutex);
2983
2984 iwl4965_send_beacon_cmd(priv);
2985 }
2986
2987 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
2988 struct iwl_rx_mem_buffer *rxb)
2989 {
2990 #ifdef CONFIG_IWLWIFI_DEBUG
2991 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
2992 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
2993 u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
2994
2995 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
2996 "tsf %d %d rate %d\n",
2997 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
2998 beacon->beacon_notify_hdr.failure_frame,
2999 le32_to_cpu(beacon->ibss_mgr_status),
3000 le32_to_cpu(beacon->high_tsf),
3001 le32_to_cpu(beacon->low_tsf), rate);
3002 #endif
3003
3004 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3005 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3006 queue_work(priv->workqueue, &priv->beacon_update);
3007 }
3008
3009 /* Service response to REPLY_SCAN_CMD (0x80) */
3010 static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
3011 struct iwl_rx_mem_buffer *rxb)
3012 {
3013 #ifdef CONFIG_IWLWIFI_DEBUG
3014 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3015 struct iwl4965_scanreq_notification *notif =
3016 (struct iwl4965_scanreq_notification *)pkt->u.raw;
3017
3018 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3019 #endif
3020 }
3021
3022 /* Service SCAN_START_NOTIFICATION (0x82) */
3023 static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
3024 struct iwl_rx_mem_buffer *rxb)
3025 {
3026 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3027 struct iwl4965_scanstart_notification *notif =
3028 (struct iwl4965_scanstart_notification *)pkt->u.raw;
3029 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3030 IWL_DEBUG_SCAN("Scan start: "
3031 "%d [802.11%s] "
3032 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3033 notif->channel,
3034 notif->band ? "bg" : "a",
3035 notif->tsf_high,
3036 notif->tsf_low, notif->status, notif->beacon_timer);
3037 }
3038
3039 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3040 static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
3041 struct iwl_rx_mem_buffer *rxb)
3042 {
3043 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3044 struct iwl4965_scanresults_notification *notif =
3045 (struct iwl4965_scanresults_notification *)pkt->u.raw;
3046
3047 IWL_DEBUG_SCAN("Scan ch.res: "
3048 "%d [802.11%s] "
3049 "(TSF: 0x%08X:%08X) - %d "
3050 "elapsed=%lu usec (%dms since last)\n",
3051 notif->channel,
3052 notif->band ? "bg" : "a",
3053 le32_to_cpu(notif->tsf_high),
3054 le32_to_cpu(notif->tsf_low),
3055 le32_to_cpu(notif->statistics[0]),
3056 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3057 jiffies_to_msecs(elapsed_jiffies
3058 (priv->last_scan_jiffies, jiffies)));
3059
3060 priv->last_scan_jiffies = jiffies;
3061 priv->next_scan_jiffies = 0;
3062 }
3063
3064 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3065 static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
3066 struct iwl_rx_mem_buffer *rxb)
3067 {
3068 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3069 struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3070
3071 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3072 scan_notif->scanned_channels,
3073 scan_notif->tsf_low,
3074 scan_notif->tsf_high, scan_notif->status);
3075
3076 /* The HW is no longer scanning */
3077 clear_bit(STATUS_SCAN_HW, &priv->status);
3078
3079 /* The scan completion notification came in, so kill that timer... */
3080 cancel_delayed_work(&priv->scan_check);
3081
3082 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3083 (priv->scan_bands == 2) ? "2.4" : "5.2",
3084 jiffies_to_msecs(elapsed_jiffies
3085 (priv->scan_pass_start, jiffies)));
3086
3087 /* Remove this scanned band from the list
3088 * of pending bands to scan */
3089 priv->scan_bands--;
3090
3091 /* If a request to abort was given, or the scan did not succeed
3092 * then we reset the scan state machine and terminate,
3093 * re-queuing another scan if one has been requested */
3094 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3095 IWL_DEBUG_INFO("Aborted scan completed.\n");
3096 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3097 } else {
3098 /* If there are more bands on this scan pass reschedule */
3099 if (priv->scan_bands > 0)
3100 goto reschedule;
3101 }
3102
3103 priv->last_scan_jiffies = jiffies;
3104 priv->next_scan_jiffies = 0;
3105 IWL_DEBUG_INFO("Setting scan to off\n");
3106
3107 clear_bit(STATUS_SCANNING, &priv->status);
3108
3109 IWL_DEBUG_INFO("Scan took %dms\n",
3110 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3111
3112 queue_work(priv->workqueue, &priv->scan_completed);
3113
3114 return;
3115
3116 reschedule:
3117 priv->scan_pass_start = jiffies;
3118 queue_work(priv->workqueue, &priv->request_scan);
3119 }
3120
3121 /* Handle notification from uCode that card's power state is changing
3122 * due to software, hardware, or critical temperature RFKILL */
3123 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
3124 struct iwl_rx_mem_buffer *rxb)
3125 {
3126 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3127 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3128 unsigned long status = priv->status;
3129
3130 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3131 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3132 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3133
3134 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
3135 RF_CARD_DISABLED)) {
3136
3137 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
3138 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3139
3140 if (!iwl_grab_nic_access(priv)) {
3141 iwl_write_direct32(
3142 priv, HBUS_TARG_MBX_C,
3143 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3144
3145 iwl_release_nic_access(priv);
3146 }
3147
3148 if (!(flags & RXON_CARD_DISABLED)) {
3149 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3150 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3151 if (!iwl_grab_nic_access(priv)) {
3152 iwl_write_direct32(
3153 priv, HBUS_TARG_MBX_C,
3154 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3155
3156 iwl_release_nic_access(priv);
3157 }
3158 }
3159
3160 if (flags & RF_CARD_DISABLED) {
3161 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
3162 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
3163 iwl_read32(priv, CSR_UCODE_DRV_GP1);
3164 if (!iwl_grab_nic_access(priv))
3165 iwl_release_nic_access(priv);
3166 }
3167 }
3168
3169 if (flags & HW_CARD_DISABLED)
3170 set_bit(STATUS_RF_KILL_HW, &priv->status);
3171 else
3172 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3173
3174
3175 if (flags & SW_CARD_DISABLED)
3176 set_bit(STATUS_RF_KILL_SW, &priv->status);
3177 else
3178 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3179
3180 if (!(flags & RXON_CARD_DISABLED))
3181 iwl4965_scan_cancel(priv);
3182
3183 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3184 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3185 (test_bit(STATUS_RF_KILL_SW, &status) !=
3186 test_bit(STATUS_RF_KILL_SW, &priv->status)))
3187 queue_work(priv->workqueue, &priv->rf_kill);
3188 else
3189 wake_up_interruptible(&priv->wait_command_queue);
3190 }
3191
3192 /**
3193 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
3194 *
3195 * Setup the RX handlers for each of the reply types sent from the uCode
3196 * to the host.
3197 *
3198 * This function chains into the hardware specific files for them to setup
3199 * any hardware specific handlers as well.
3200 */
3201 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
3202 {
3203 priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
3204 priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
3205 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
3206 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
3207 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3208 iwl4965_rx_spectrum_measure_notif;
3209 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
3210 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3211 iwl4965_rx_pm_debug_statistics_notif;
3212 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
3213
3214 /*
3215 * The same handler is used for both the REPLY to a discrete
3216 * statistics request from the host as well as for the periodic
3217 * statistics notifications (after received beacons) from the uCode.
3218 */
3219 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
3220 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
3221
3222 priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
3223 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
3224 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3225 iwl4965_rx_scan_results_notif;
3226 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3227 iwl4965_rx_scan_complete_notif;
3228 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
3229 priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
3230
3231 /* Set up hardware specific Rx handlers */
3232 priv->cfg->ops->lib->rx_handler_setup(priv);
3233 }
3234
3235 /**
3236 * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3237 * @rxb: Rx buffer to reclaim
3238 *
3239 * If an Rx buffer has an async callback associated with it the callback
3240 * will be executed. The attached skb (if present) will only be freed
3241 * if the callback returns 1
3242 */
3243 static void iwl4965_tx_cmd_complete(struct iwl_priv *priv,
3244 struct iwl_rx_mem_buffer *rxb)
3245 {
3246 struct iwl4965_rx_packet *pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
3247 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3248 int txq_id = SEQ_TO_QUEUE(sequence);
3249 int index = SEQ_TO_INDEX(sequence);
3250 int huge = sequence & SEQ_HUGE_FRAME;
3251 int cmd_index;
3252 struct iwl_cmd *cmd;
3253
3254 /* If a Tx command is being handled and it isn't in the actual
3255 * command queue then there a command routing bug has been introduced
3256 * in the queue management code. */
3257 if (txq_id != IWL_CMD_QUEUE_NUM)
3258 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
3259 txq_id, pkt->hdr.cmd);
3260 BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3261
3262 cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
3263 cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3264
3265 /* Input error checking is done when commands are added to queue. */
3266 if (cmd->meta.flags & CMD_WANT_SKB) {
3267 cmd->meta.source->u.skb = rxb->skb;
3268 rxb->skb = NULL;
3269 } else if (cmd->meta.u.callback &&
3270 !cmd->meta.u.callback(priv, cmd, rxb->skb))
3271 rxb->skb = NULL;
3272
3273 iwl4965_tx_queue_reclaim(priv, txq_id, index);
3274
3275 if (!(cmd->meta.flags & CMD_ASYNC)) {
3276 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3277 wake_up_interruptible(&priv->wait_command_queue);
3278 }
3279 }
3280
3281 /*
3282 * this should be called while priv->lock is locked
3283 */
3284 static void __iwl_rx_replenish(struct iwl_priv *priv)
3285 {
3286 iwl_rx_allocate(priv);
3287 iwl_rx_queue_restock(priv);
3288 }
3289
3290
3291 /**
3292 * iwl_rx_handle - Main entry function for receiving responses from uCode
3293 *
3294 * Uses the priv->rx_handlers callback function array to invoke
3295 * the appropriate handlers, including command responses,
3296 * frame-received notifications, and other notifications.
3297 */
3298 void iwl_rx_handle(struct iwl_priv *priv)
3299 {
3300 struct iwl_rx_mem_buffer *rxb;
3301 struct iwl4965_rx_packet *pkt;
3302 struct iwl_rx_queue *rxq = &priv->rxq;
3303 u32 r, i;
3304 int reclaim;
3305 unsigned long flags;
3306 u8 fill_rx = 0;
3307 u32 count = 8;
3308
3309 /* uCode's read index (stored in shared DRAM) indicates the last Rx
3310 * buffer that the driver may process (last buffer filled by ucode). */
3311 r = iwl4965_hw_get_rx_read(priv);
3312 i = rxq->read;
3313
3314 /* Rx interrupt, but nothing sent from uCode */
3315 if (i == r)
3316 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
3317
3318 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
3319 fill_rx = 1;
3320
3321 while (i != r) {
3322 rxb = rxq->queue[i];
3323
3324 /* If an RXB doesn't have a Rx queue slot associated with it,
3325 * then a bug has been introduced in the queue refilling
3326 * routines -- catch it here */
3327 BUG_ON(rxb == NULL);
3328
3329 rxq->queue[i] = NULL;
3330
3331 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
3332 priv->hw_params.rx_buf_size,
3333 PCI_DMA_FROMDEVICE);
3334 pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
3335
3336 /* Reclaim a command buffer only if this packet is a response
3337 * to a (driver-originated) command.
3338 * If the packet (e.g. Rx frame) originated from uCode,
3339 * there is no command buffer to reclaim.
3340 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
3341 * but apparently a few don't get set; catch them here. */
3342 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
3343 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
3344 (pkt->hdr.cmd != REPLY_RX) &&
3345 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
3346 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
3347 (pkt->hdr.cmd != REPLY_TX);
3348
3349 /* Based on type of command response or notification,
3350 * handle those that need handling via function in
3351 * rx_handlers table. See iwl4965_setup_rx_handlers() */
3352 if (priv->rx_handlers[pkt->hdr.cmd]) {
3353 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
3354 "r = %d, i = %d, %s, 0x%02x\n", r, i,
3355 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
3356 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
3357 } else {
3358 /* No handling needed */
3359 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
3360 "r %d i %d No handler needed for %s, 0x%02x\n",
3361 r, i, get_cmd_string(pkt->hdr.cmd),
3362 pkt->hdr.cmd);
3363 }
3364
3365 if (reclaim) {
3366 /* Invoke any callbacks, transfer the skb to caller, and
3367 * fire off the (possibly) blocking iwl_send_cmd()
3368 * as we reclaim the driver command queue */
3369 if (rxb && rxb->skb)
3370 iwl4965_tx_cmd_complete(priv, rxb);
3371 else
3372 IWL_WARNING("Claim null rxb?\n");
3373 }
3374
3375 /* For now we just don't re-use anything. We can tweak this
3376 * later to try and re-use notification packets and SKBs that
3377 * fail to Rx correctly */
3378 if (rxb->skb != NULL) {
3379 priv->alloc_rxb_skb--;
3380 dev_kfree_skb_any(rxb->skb);
3381 rxb->skb = NULL;
3382 }
3383
3384 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
3385 priv->hw_params.rx_buf_size,
3386 PCI_DMA_FROMDEVICE);
3387 spin_lock_irqsave(&rxq->lock, flags);
3388 list_add_tail(&rxb->list, &priv->rxq.rx_used);
3389 spin_unlock_irqrestore(&rxq->lock, flags);
3390 i = (i + 1) & RX_QUEUE_MASK;
3391 /* If there are a lot of unused frames,
3392 * restock the Rx queue so ucode wont assert. */
3393 if (fill_rx) {
3394 count++;
3395 if (count >= 8) {
3396 priv->rxq.read = i;
3397 __iwl_rx_replenish(priv);
3398 count = 0;
3399 }
3400 }
3401 }
3402
3403 /* Backtrack one entry */
3404 priv->rxq.read = i;
3405 iwl_rx_queue_restock(priv);
3406 }
3407 /* Convert linear signal-to-noise ratio into dB */
3408 static u8 ratio2dB[100] = {
3409 /* 0 1 2 3 4 5 6 7 8 9 */
3410 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
3411 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
3412 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
3413 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
3414 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
3415 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
3416 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
3417 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
3418 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
3419 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
3420 };
3421
3422 /* Calculates a relative dB value from a ratio of linear
3423 * (i.e. not dB) signal levels.
3424 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
3425 int iwl4965_calc_db_from_ratio(int sig_ratio)
3426 {
3427 /* 1000:1 or higher just report as 60 dB */
3428 if (sig_ratio >= 1000)
3429 return 60;
3430
3431 /* 100:1 or higher, divide by 10 and use table,
3432 * add 20 dB to make up for divide by 10 */
3433 if (sig_ratio >= 100)
3434 return (20 + (int)ratio2dB[sig_ratio/10]);
3435
3436 /* We shouldn't see this */
3437 if (sig_ratio < 1)
3438 return 0;
3439
3440 /* Use table for ratios 1:1 - 99:1 */
3441 return (int)ratio2dB[sig_ratio];
3442 }
3443
3444 #define PERFECT_RSSI (-20) /* dBm */
3445 #define WORST_RSSI (-95) /* dBm */
3446 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
3447
3448 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
3449 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
3450 * about formulas used below. */
3451 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
3452 {
3453 int sig_qual;
3454 int degradation = PERFECT_RSSI - rssi_dbm;
3455
3456 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
3457 * as indicator; formula is (signal dbm - noise dbm).
3458 * SNR at or above 40 is a great signal (100%).
3459 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
3460 * Weakest usable signal is usually 10 - 15 dB SNR. */
3461 if (noise_dbm) {
3462 if (rssi_dbm - noise_dbm >= 40)
3463 return 100;
3464 else if (rssi_dbm < noise_dbm)
3465 return 0;
3466 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
3467
3468 /* Else use just the signal level.
3469 * This formula is a least squares fit of data points collected and
3470 * compared with a reference system that had a percentage (%) display
3471 * for signal quality. */
3472 } else
3473 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
3474 (15 * RSSI_RANGE + 62 * degradation)) /
3475 (RSSI_RANGE * RSSI_RANGE);
3476
3477 if (sig_qual > 100)
3478 sig_qual = 100;
3479 else if (sig_qual < 1)
3480 sig_qual = 0;
3481
3482 return sig_qual;
3483 }
3484
3485 /**
3486 * iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
3487 */
3488 static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv,
3489 struct iwl4965_tx_queue *txq)
3490 {
3491 u32 reg = 0;
3492 int rc = 0;
3493 int txq_id = txq->q.id;
3494
3495 if (txq->need_update == 0)
3496 return rc;
3497
3498 /* if we're trying to save power */
3499 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3500 /* wake up nic if it's powered down ...
3501 * uCode will wake up, and interrupt us again, so next
3502 * time we'll skip this part. */
3503 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
3504
3505 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3506 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
3507 iwl_set_bit(priv, CSR_GP_CNTRL,
3508 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3509 return rc;
3510 }
3511
3512 /* restore this queue's parameters in nic hardware. */
3513 rc = iwl_grab_nic_access(priv);
3514 if (rc)
3515 return rc;
3516 iwl_write_direct32(priv, HBUS_TARG_WRPTR,
3517 txq->q.write_ptr | (txq_id << 8));
3518 iwl_release_nic_access(priv);
3519
3520 /* else not in power-save mode, uCode will never sleep when we're
3521 * trying to tx (during RFKILL, we're not trying to tx). */
3522 } else
3523 iwl_write32(priv, HBUS_TARG_WRPTR,
3524 txq->q.write_ptr | (txq_id << 8));
3525
3526 txq->need_update = 0;
3527
3528 return rc;
3529 }
3530
3531 #ifdef CONFIG_IWLWIFI_DEBUG
3532 static void iwl4965_print_rx_config_cmd(struct iwl4965_rxon_cmd *rxon)
3533 {
3534 DECLARE_MAC_BUF(mac);
3535
3536 IWL_DEBUG_RADIO("RX CONFIG:\n");
3537 iwl_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
3538 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
3539 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
3540 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
3541 le32_to_cpu(rxon->filter_flags));
3542 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
3543 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
3544 rxon->ofdm_basic_rates);
3545 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
3546 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
3547 print_mac(mac, rxon->node_addr));
3548 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
3549 print_mac(mac, rxon->bssid_addr));
3550 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
3551 }
3552 #endif
3553
3554 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
3555 {
3556 IWL_DEBUG_ISR("Enabling interrupts\n");
3557 set_bit(STATUS_INT_ENABLED, &priv->status);
3558 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
3559 }
3560
3561 /* call this function to flush any scheduled tasklet */
3562 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
3563 {
3564 /* wait to make sure we flush pedding tasklet*/
3565 synchronize_irq(priv->pci_dev->irq);
3566 tasklet_kill(&priv->irq_tasklet);
3567 }
3568
3569 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
3570 {
3571 clear_bit(STATUS_INT_ENABLED, &priv->status);
3572
3573 /* disable interrupts from uCode/NIC to host */
3574 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
3575
3576 /* acknowledge/clear/reset any interrupts still pending
3577 * from uCode or flow handler (Rx/Tx DMA) */
3578 iwl_write32(priv, CSR_INT, 0xffffffff);
3579 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
3580 IWL_DEBUG_ISR("Disabled interrupts\n");
3581 }
3582
3583 static const char *desc_lookup(int i)
3584 {
3585 switch (i) {
3586 case 1:
3587 return "FAIL";
3588 case 2:
3589 return "BAD_PARAM";
3590 case 3:
3591 return "BAD_CHECKSUM";
3592 case 4:
3593 return "NMI_INTERRUPT";
3594 case 5:
3595 return "SYSASSERT";
3596 case 6:
3597 return "FATAL_ERROR";
3598 }
3599
3600 return "UNKNOWN";
3601 }
3602
3603 #define ERROR_START_OFFSET (1 * sizeof(u32))
3604 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
3605
3606 static void iwl4965_dump_nic_error_log(struct iwl_priv *priv)
3607 {
3608 u32 data2, line;
3609 u32 desc, time, count, base, data1;
3610 u32 blink1, blink2, ilink1, ilink2;
3611 int rc;
3612
3613 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
3614
3615 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
3616 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
3617 return;
3618 }
3619
3620 rc = iwl_grab_nic_access(priv);
3621 if (rc) {
3622 IWL_WARNING("Can not read from adapter at this time.\n");
3623 return;
3624 }
3625
3626 count = iwl_read_targ_mem(priv, base);
3627
3628 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
3629 IWL_ERROR("Start IWL Error Log Dump:\n");
3630 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
3631 }
3632
3633 desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
3634 blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
3635 blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
3636 ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
3637 ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
3638 data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
3639 data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
3640 line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
3641 time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
3642
3643 IWL_ERROR("Desc Time "
3644 "data1 data2 line\n");
3645 IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
3646 desc_lookup(desc), desc, time, data1, data2, line);
3647 IWL_ERROR("blink1 blink2 ilink1 ilink2\n");
3648 IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
3649 ilink1, ilink2);
3650
3651 iwl_release_nic_access(priv);
3652 }
3653
3654 #define EVENT_START_OFFSET (4 * sizeof(u32))
3655
3656 /**
3657 * iwl4965_print_event_log - Dump error event log to syslog
3658 *
3659 * NOTE: Must be called with iwl_grab_nic_access() already obtained!
3660 */
3661 static void iwl4965_print_event_log(struct iwl_priv *priv, u32 start_idx,
3662 u32 num_events, u32 mode)
3663 {
3664 u32 i;
3665 u32 base; /* SRAM byte address of event log header */
3666 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
3667 u32 ptr; /* SRAM byte address of log data */
3668 u32 ev, time, data; /* event log data */
3669
3670 if (num_events == 0)
3671 return;
3672
3673 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
3674
3675 if (mode == 0)
3676 event_size = 2 * sizeof(u32);
3677 else
3678 event_size = 3 * sizeof(u32);
3679
3680 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
3681
3682 /* "time" is actually "data" for mode 0 (no timestamp).
3683 * place event id # at far right for easier visual parsing. */
3684 for (i = 0; i < num_events; i++) {
3685 ev = iwl_read_targ_mem(priv, ptr);
3686 ptr += sizeof(u32);
3687 time = iwl_read_targ_mem(priv, ptr);
3688 ptr += sizeof(u32);
3689 if (mode == 0)
3690 IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
3691 else {
3692 data = iwl_read_targ_mem(priv, ptr);
3693 ptr += sizeof(u32);
3694 IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
3695 }
3696 }
3697 }
3698
3699 static void iwl4965_dump_nic_event_log(struct iwl_priv *priv)
3700 {
3701 int rc;
3702 u32 base; /* SRAM byte address of event log header */
3703 u32 capacity; /* event log capacity in # entries */
3704 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
3705 u32 num_wraps; /* # times uCode wrapped to top of log */
3706 u32 next_entry; /* index of next entry to be written by uCode */
3707 u32 size; /* # entries that we'll print */
3708
3709 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
3710 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
3711 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
3712 return;
3713 }
3714
3715 rc = iwl_grab_nic_access(priv);
3716 if (rc) {
3717 IWL_WARNING("Can not read from adapter at this time.\n");
3718 return;
3719 }
3720
3721 /* event log header */
3722 capacity = iwl_read_targ_mem(priv, base);
3723 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
3724 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
3725 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
3726
3727 size = num_wraps ? capacity : next_entry;
3728
3729 /* bail out if nothing in log */
3730 if (size == 0) {
3731 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
3732 iwl_release_nic_access(priv);
3733 return;
3734 }
3735
3736 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
3737 size, num_wraps);
3738
3739 /* if uCode has wrapped back to top of log, start at the oldest entry,
3740 * i.e the next one that uCode would fill. */
3741 if (num_wraps)
3742 iwl4965_print_event_log(priv, next_entry,
3743 capacity - next_entry, mode);
3744
3745 /* (then/else) start at top of log */
3746 iwl4965_print_event_log(priv, 0, next_entry, mode);
3747
3748 iwl_release_nic_access(priv);
3749 }
3750
3751 /**
3752 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
3753 */
3754 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
3755 {
3756 /* Set the FW error flag -- cleared on iwl4965_down */
3757 set_bit(STATUS_FW_ERROR, &priv->status);
3758
3759 /* Cancel currently queued command. */
3760 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3761
3762 #ifdef CONFIG_IWLWIFI_DEBUG
3763 if (iwl_debug_level & IWL_DL_FW_ERRORS) {
3764 iwl4965_dump_nic_error_log(priv);
3765 iwl4965_dump_nic_event_log(priv);
3766 iwl4965_print_rx_config_cmd(&priv->staging_rxon);
3767 }
3768 #endif
3769
3770 wake_up_interruptible(&priv->wait_command_queue);
3771
3772 /* Keep the restart process from trying to send host
3773 * commands by clearing the INIT status bit */
3774 clear_bit(STATUS_READY, &priv->status);
3775
3776 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3777 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
3778 "Restarting adapter due to uCode error.\n");
3779
3780 if (iwl_is_associated(priv)) {
3781 memcpy(&priv->recovery_rxon, &priv->active_rxon,
3782 sizeof(priv->recovery_rxon));
3783 priv->error_recovering = 1;
3784 }
3785 queue_work(priv->workqueue, &priv->restart);
3786 }
3787 }
3788
3789 static void iwl4965_error_recovery(struct iwl_priv *priv)
3790 {
3791 unsigned long flags;
3792
3793 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
3794 sizeof(priv->staging_rxon));
3795 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3796 iwl4965_commit_rxon(priv);
3797
3798 iwl4965_rxon_add_station(priv, priv->bssid, 1);
3799
3800 spin_lock_irqsave(&priv->lock, flags);
3801 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
3802 priv->error_recovering = 0;
3803 spin_unlock_irqrestore(&priv->lock, flags);
3804 }
3805
3806 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
3807 {
3808 u32 inta, handled = 0;
3809 u32 inta_fh;
3810 unsigned long flags;
3811 #ifdef CONFIG_IWLWIFI_DEBUG
3812 u32 inta_mask;
3813 #endif
3814
3815 spin_lock_irqsave(&priv->lock, flags);
3816
3817 /* Ack/clear/reset pending uCode interrupts.
3818 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
3819 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
3820 inta = iwl_read32(priv, CSR_INT);
3821 iwl_write32(priv, CSR_INT, inta);
3822
3823 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
3824 * Any new interrupts that happen after this, either while we're
3825 * in this tasklet, or later, will show up in next ISR/tasklet. */
3826 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
3827 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
3828
3829 #ifdef CONFIG_IWLWIFI_DEBUG
3830 if (iwl_debug_level & IWL_DL_ISR) {
3831 /* just for debug */
3832 inta_mask = iwl_read32(priv, CSR_INT_MASK);
3833 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
3834 inta, inta_mask, inta_fh);
3835 }
3836 #endif
3837
3838 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
3839 * atomic, make sure that inta covers all the interrupts that
3840 * we've discovered, even if FH interrupt came in just after
3841 * reading CSR_INT. */
3842 if (inta_fh & CSR49_FH_INT_RX_MASK)
3843 inta |= CSR_INT_BIT_FH_RX;
3844 if (inta_fh & CSR49_FH_INT_TX_MASK)
3845 inta |= CSR_INT_BIT_FH_TX;
3846
3847 /* Now service all interrupt bits discovered above. */
3848 if (inta & CSR_INT_BIT_HW_ERR) {
3849 IWL_ERROR("Microcode HW error detected. Restarting.\n");
3850
3851 /* Tell the device to stop sending interrupts */
3852 iwl4965_disable_interrupts(priv);
3853
3854 iwl4965_irq_handle_error(priv);
3855
3856 handled |= CSR_INT_BIT_HW_ERR;
3857
3858 spin_unlock_irqrestore(&priv->lock, flags);
3859
3860 return;
3861 }
3862
3863 #ifdef CONFIG_IWLWIFI_DEBUG
3864 if (iwl_debug_level & (IWL_DL_ISR)) {
3865 /* NIC fires this, but we don't use it, redundant with WAKEUP */
3866 if (inta & CSR_INT_BIT_SCD)
3867 IWL_DEBUG_ISR("Scheduler finished to transmit "
3868 "the frame/frames.\n");
3869
3870 /* Alive notification via Rx interrupt will do the real work */
3871 if (inta & CSR_INT_BIT_ALIVE)
3872 IWL_DEBUG_ISR("Alive interrupt\n");
3873 }
3874 #endif
3875 /* Safely ignore these bits for debug checks below */
3876 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
3877
3878 /* HW RF KILL switch toggled */
3879 if (inta & CSR_INT_BIT_RF_KILL) {
3880 int hw_rf_kill = 0;
3881 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
3882 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
3883 hw_rf_kill = 1;
3884
3885 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
3886 "RF_KILL bit toggled to %s.\n",
3887 hw_rf_kill ? "disable radio":"enable radio");
3888
3889 /* Queue restart only if RF_KILL switch was set to "kill"
3890 * when we loaded driver, and is now set to "enable".
3891 * After we're Alive, RF_KILL gets handled by
3892 * iwl4965_rx_card_state_notif() */
3893 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
3894 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3895 queue_work(priv->workqueue, &priv->restart);
3896 }
3897
3898 handled |= CSR_INT_BIT_RF_KILL;
3899 }
3900
3901 /* Chip got too hot and stopped itself */
3902 if (inta & CSR_INT_BIT_CT_KILL) {
3903 IWL_ERROR("Microcode CT kill error detected.\n");
3904 handled |= CSR_INT_BIT_CT_KILL;
3905 }
3906
3907 /* Error detected by uCode */
3908 if (inta & CSR_INT_BIT_SW_ERR) {
3909 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
3910 inta);
3911 iwl4965_irq_handle_error(priv);
3912 handled |= CSR_INT_BIT_SW_ERR;
3913 }
3914
3915 /* uCode wakes up after power-down sleep */
3916 if (inta & CSR_INT_BIT_WAKEUP) {
3917 IWL_DEBUG_ISR("Wakeup interrupt\n");
3918 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
3919 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]);
3920 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]);
3921 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]);
3922 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]);
3923 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]);
3924 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]);
3925
3926 handled |= CSR_INT_BIT_WAKEUP;
3927 }
3928
3929 /* All uCode command responses, including Tx command responses,
3930 * Rx "responses" (frame-received notification), and other
3931 * notifications from uCode come through here*/
3932 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
3933 iwl_rx_handle(priv);
3934 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
3935 }
3936
3937 if (inta & CSR_INT_BIT_FH_TX) {
3938 IWL_DEBUG_ISR("Tx interrupt\n");
3939 handled |= CSR_INT_BIT_FH_TX;
3940 }
3941
3942 if (inta & ~handled)
3943 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
3944
3945 if (inta & ~CSR_INI_SET_MASK) {
3946 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
3947 inta & ~CSR_INI_SET_MASK);
3948 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
3949 }
3950
3951 /* Re-enable all interrupts */
3952 /* only Re-enable if diabled by irq */
3953 if (test_bit(STATUS_INT_ENABLED, &priv->status))
3954 iwl4965_enable_interrupts(priv);
3955
3956 #ifdef CONFIG_IWLWIFI_DEBUG
3957 if (iwl_debug_level & (IWL_DL_ISR)) {
3958 inta = iwl_read32(priv, CSR_INT);
3959 inta_mask = iwl_read32(priv, CSR_INT_MASK);
3960 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
3961 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
3962 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
3963 }
3964 #endif
3965 spin_unlock_irqrestore(&priv->lock, flags);
3966 }
3967
3968 static irqreturn_t iwl4965_isr(int irq, void *data)
3969 {
3970 struct iwl_priv *priv = data;
3971 u32 inta, inta_mask;
3972 u32 inta_fh;
3973 if (!priv)
3974 return IRQ_NONE;
3975
3976 spin_lock(&priv->lock);
3977
3978 /* Disable (but don't clear!) interrupts here to avoid
3979 * back-to-back ISRs and sporadic interrupts from our NIC.
3980 * If we have something to service, the tasklet will re-enable ints.
3981 * If we *don't* have something, we'll re-enable before leaving here. */
3982 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
3983 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
3984
3985 /* Discover which interrupts are active/pending */
3986 inta = iwl_read32(priv, CSR_INT);
3987 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
3988
3989 /* Ignore interrupt if there's nothing in NIC to service.
3990 * This may be due to IRQ shared with another device,
3991 * or due to sporadic interrupts thrown from our NIC. */
3992 if (!inta && !inta_fh) {
3993 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
3994 goto none;
3995 }
3996
3997 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
3998 /* Hardware disappeared. It might have already raised
3999 * an interrupt */
4000 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
4001 goto unplugged;
4002 }
4003
4004 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4005 inta, inta_mask, inta_fh);
4006
4007 inta &= ~CSR_INT_BIT_SCD;
4008
4009 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
4010 if (likely(inta || inta_fh))
4011 tasklet_schedule(&priv->irq_tasklet);
4012
4013 unplugged:
4014 spin_unlock(&priv->lock);
4015 return IRQ_HANDLED;
4016
4017 none:
4018 /* re-enable interrupts here since we don't have anything to service. */
4019 /* only Re-enable if diabled by irq */
4020 if (test_bit(STATUS_INT_ENABLED, &priv->status))
4021 iwl4965_enable_interrupts(priv);
4022 spin_unlock(&priv->lock);
4023 return IRQ_NONE;
4024 }
4025
4026 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
4027 * sending probe req. This should be set long enough to hear probe responses
4028 * from more than one AP. */
4029 #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
4030 #define IWL_ACTIVE_DWELL_TIME_52 (10)
4031
4032 /* For faster active scanning, scan will move to the next channel if fewer than
4033 * PLCP_QUIET_THRESH packets are heard on this channel within
4034 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
4035 * time if it's a quiet channel (nothing responded to our probe, and there's
4036 * no other traffic).
4037 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
4038 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
4039 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
4040
4041 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
4042 * Must be set longer than active dwell time.
4043 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
4044 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
4045 #define IWL_PASSIVE_DWELL_TIME_52 (10)
4046 #define IWL_PASSIVE_DWELL_BASE (100)
4047 #define IWL_CHANNEL_TUNE_TIME 5
4048
4049 static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
4050 enum ieee80211_band band)
4051 {
4052 if (band == IEEE80211_BAND_5GHZ)
4053 return IWL_ACTIVE_DWELL_TIME_52;
4054 else
4055 return IWL_ACTIVE_DWELL_TIME_24;
4056 }
4057
4058 static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
4059 enum ieee80211_band band)
4060 {
4061 u16 active = iwl4965_get_active_dwell_time(priv, band);
4062 u16 passive = (band != IEEE80211_BAND_5GHZ) ?
4063 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
4064 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
4065
4066 if (iwl_is_associated(priv)) {
4067 /* If we're associated, we clamp the maximum passive
4068 * dwell time to be 98% of the beacon interval (minus
4069 * 2 * channel tune time) */
4070 passive = priv->beacon_int;
4071 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
4072 passive = IWL_PASSIVE_DWELL_BASE;
4073 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
4074 }
4075
4076 if (passive <= active)
4077 passive = active + 1;
4078
4079 return passive;
4080 }
4081
4082 static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
4083 enum ieee80211_band band,
4084 u8 is_active, u8 direct_mask,
4085 struct iwl4965_scan_channel *scan_ch)
4086 {
4087 const struct ieee80211_channel *channels = NULL;
4088 const struct ieee80211_supported_band *sband;
4089 const struct iwl_channel_info *ch_info;
4090 u16 passive_dwell = 0;
4091 u16 active_dwell = 0;
4092 int added, i;
4093
4094 sband = iwl_get_hw_mode(priv, band);
4095 if (!sband)
4096 return 0;
4097
4098 channels = sband->channels;
4099
4100 active_dwell = iwl4965_get_active_dwell_time(priv, band);
4101 passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
4102
4103 for (i = 0, added = 0; i < sband->n_channels; i++) {
4104 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
4105 continue;
4106
4107 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
4108
4109 ch_info = iwl_get_channel_info(priv, band,
4110 scan_ch->channel);
4111 if (!is_channel_valid(ch_info)) {
4112 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
4113 scan_ch->channel);
4114 continue;
4115 }
4116
4117 if (!is_active || is_channel_passive(ch_info) ||
4118 (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
4119 scan_ch->type = 0; /* passive */
4120 else
4121 scan_ch->type = 1; /* active */
4122
4123 if (scan_ch->type & 1)
4124 scan_ch->type |= (direct_mask << 1);
4125
4126 scan_ch->active_dwell = cpu_to_le16(active_dwell);
4127 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
4128
4129 /* Set txpower levels to defaults */
4130 scan_ch->tpc.dsp_atten = 110;
4131 /* scan_pwr_info->tpc.dsp_atten; */
4132
4133 /*scan_pwr_info->tpc.tx_gain; */
4134 if (band == IEEE80211_BAND_5GHZ)
4135 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
4136 else {
4137 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
4138 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
4139 * power level:
4140 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
4141 */
4142 }
4143
4144 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
4145 scan_ch->channel,
4146 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
4147 (scan_ch->type & 1) ?
4148 active_dwell : passive_dwell);
4149
4150 scan_ch++;
4151 added++;
4152 }
4153
4154 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
4155 return added;
4156 }
4157
4158 /******************************************************************************
4159 *
4160 * uCode download functions
4161 *
4162 ******************************************************************************/
4163
4164 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
4165 {
4166 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
4167 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
4168 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
4169 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
4170 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
4171 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
4172 }
4173
4174 static void iwl4965_nic_start(struct iwl_priv *priv)
4175 {
4176 /* Remove all resets to allow NIC to operate */
4177 iwl_write32(priv, CSR_RESET, 0);
4178 }
4179
4180
4181 /**
4182 * iwl4965_read_ucode - Read uCode images from disk file.
4183 *
4184 * Copy into buffers for card to fetch via bus-mastering
4185 */
4186 static int iwl4965_read_ucode(struct iwl_priv *priv)
4187 {
4188 struct iwl4965_ucode *ucode;
4189 int ret;
4190 const struct firmware *ucode_raw;
4191 const char *name = priv->cfg->fw_name;
4192 u8 *src;
4193 size_t len;
4194 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
4195
4196 /* Ask kernel firmware_class module to get the boot firmware off disk.
4197 * request_firmware() is synchronous, file is in memory on return. */
4198 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
4199 if (ret < 0) {
4200 IWL_ERROR("%s firmware file req failed: Reason %d\n",
4201 name, ret);
4202 goto error;
4203 }
4204
4205 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
4206 name, ucode_raw->size);
4207
4208 /* Make sure that we got at least our header! */
4209 if (ucode_raw->size < sizeof(*ucode)) {
4210 IWL_ERROR("File size way too small!\n");
4211 ret = -EINVAL;
4212 goto err_release;
4213 }
4214
4215 /* Data from ucode file: header followed by uCode images */
4216 ucode = (void *)ucode_raw->data;
4217
4218 ver = le32_to_cpu(ucode->ver);
4219 inst_size = le32_to_cpu(ucode->inst_size);
4220 data_size = le32_to_cpu(ucode->data_size);
4221 init_size = le32_to_cpu(ucode->init_size);
4222 init_data_size = le32_to_cpu(ucode->init_data_size);
4223 boot_size = le32_to_cpu(ucode->boot_size);
4224
4225 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
4226 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
4227 inst_size);
4228 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
4229 data_size);
4230 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
4231 init_size);
4232 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
4233 init_data_size);
4234 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
4235 boot_size);
4236
4237 /* Verify size of file vs. image size info in file's header */
4238 if (ucode_raw->size < sizeof(*ucode) +
4239 inst_size + data_size + init_size +
4240 init_data_size + boot_size) {
4241
4242 IWL_DEBUG_INFO("uCode file size %d too small\n",
4243 (int)ucode_raw->size);
4244 ret = -EINVAL;
4245 goto err_release;
4246 }
4247
4248 /* Verify that uCode images will fit in card's SRAM */
4249 if (inst_size > priv->hw_params.max_inst_size) {
4250 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
4251 inst_size);
4252 ret = -EINVAL;
4253 goto err_release;
4254 }
4255
4256 if (data_size > priv->hw_params.max_data_size) {
4257 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
4258 data_size);
4259 ret = -EINVAL;
4260 goto err_release;
4261 }
4262 if (init_size > priv->hw_params.max_inst_size) {
4263 IWL_DEBUG_INFO
4264 ("uCode init instr len %d too large to fit in\n",
4265 init_size);
4266 ret = -EINVAL;
4267 goto err_release;
4268 }
4269 if (init_data_size > priv->hw_params.max_data_size) {
4270 IWL_DEBUG_INFO
4271 ("uCode init data len %d too large to fit in\n",
4272 init_data_size);
4273 ret = -EINVAL;
4274 goto err_release;
4275 }
4276 if (boot_size > priv->hw_params.max_bsm_size) {
4277 IWL_DEBUG_INFO
4278 ("uCode boot instr len %d too large to fit in\n",
4279 boot_size);
4280 ret = -EINVAL;
4281 goto err_release;
4282 }
4283
4284 /* Allocate ucode buffers for card's bus-master loading ... */
4285
4286 /* Runtime instructions and 2 copies of data:
4287 * 1) unmodified from disk
4288 * 2) backup cache for save/restore during power-downs */
4289 priv->ucode_code.len = inst_size;
4290 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
4291
4292 priv->ucode_data.len = data_size;
4293 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
4294
4295 priv->ucode_data_backup.len = data_size;
4296 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
4297
4298 /* Initialization instructions and data */
4299 if (init_size && init_data_size) {
4300 priv->ucode_init.len = init_size;
4301 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
4302
4303 priv->ucode_init_data.len = init_data_size;
4304 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
4305
4306 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
4307 goto err_pci_alloc;
4308 }
4309
4310 /* Bootstrap (instructions only, no data) */
4311 if (boot_size) {
4312 priv->ucode_boot.len = boot_size;
4313 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
4314
4315 if (!priv->ucode_boot.v_addr)
4316 goto err_pci_alloc;
4317 }
4318
4319 /* Copy images into buffers for card's bus-master reads ... */
4320
4321 /* Runtime instructions (first block of data in file) */
4322 src = &ucode->data[0];
4323 len = priv->ucode_code.len;
4324 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
4325 memcpy(priv->ucode_code.v_addr, src, len);
4326 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
4327 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
4328
4329 /* Runtime data (2nd block)
4330 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
4331 src = &ucode->data[inst_size];
4332 len = priv->ucode_data.len;
4333 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
4334 memcpy(priv->ucode_data.v_addr, src, len);
4335 memcpy(priv->ucode_data_backup.v_addr, src, len);
4336
4337 /* Initialization instructions (3rd block) */
4338 if (init_size) {
4339 src = &ucode->data[inst_size + data_size];
4340 len = priv->ucode_init.len;
4341 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
4342 len);
4343 memcpy(priv->ucode_init.v_addr, src, len);
4344 }
4345
4346 /* Initialization data (4th block) */
4347 if (init_data_size) {
4348 src = &ucode->data[inst_size + data_size + init_size];
4349 len = priv->ucode_init_data.len;
4350 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
4351 len);
4352 memcpy(priv->ucode_init_data.v_addr, src, len);
4353 }
4354
4355 /* Bootstrap instructions (5th block) */
4356 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
4357 len = priv->ucode_boot.len;
4358 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
4359 memcpy(priv->ucode_boot.v_addr, src, len);
4360
4361 /* We have our copies now, allow OS release its copies */
4362 release_firmware(ucode_raw);
4363 return 0;
4364
4365 err_pci_alloc:
4366 IWL_ERROR("failed to allocate pci memory\n");
4367 ret = -ENOMEM;
4368 iwl4965_dealloc_ucode_pci(priv);
4369
4370 err_release:
4371 release_firmware(ucode_raw);
4372
4373 error:
4374 return ret;
4375 }
4376
4377
4378 /**
4379 * iwl4965_set_ucode_ptrs - Set uCode address location
4380 *
4381 * Tell initialization uCode where to find runtime uCode.
4382 *
4383 * BSM registers initially contain pointers to initialization uCode.
4384 * We need to replace them to load runtime uCode inst and data,
4385 * and to save runtime data when powering down.
4386 */
4387 static int iwl4965_set_ucode_ptrs(struct iwl_priv *priv)
4388 {
4389 dma_addr_t pinst;
4390 dma_addr_t pdata;
4391 int rc = 0;
4392 unsigned long flags;
4393
4394 /* bits 35:4 for 4965 */
4395 pinst = priv->ucode_code.p_addr >> 4;
4396 pdata = priv->ucode_data_backup.p_addr >> 4;
4397
4398 spin_lock_irqsave(&priv->lock, flags);
4399 rc = iwl_grab_nic_access(priv);
4400 if (rc) {
4401 spin_unlock_irqrestore(&priv->lock, flags);
4402 return rc;
4403 }
4404
4405 /* Tell bootstrap uCode where to find image to load */
4406 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
4407 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
4408 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
4409 priv->ucode_data.len);
4410
4411 /* Inst bytecount must be last to set up, bit 31 signals uCode
4412 * that all new ptr/size info is in place */
4413 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
4414 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
4415
4416 iwl_release_nic_access(priv);
4417
4418 spin_unlock_irqrestore(&priv->lock, flags);
4419
4420 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
4421
4422 return rc;
4423 }
4424
4425 /**
4426 * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
4427 *
4428 * Called after REPLY_ALIVE notification received from "initialize" uCode.
4429 *
4430 * The 4965 "initialize" ALIVE reply contains calibration data for:
4431 * Voltage, temperature, and MIMO tx gain correction, now stored in priv
4432 * (3945 does not contain this data).
4433 *
4434 * Tell "initialize" uCode to go ahead and load the runtime uCode.
4435 */
4436 static void iwl4965_init_alive_start(struct iwl_priv *priv)
4437 {
4438 /* Check alive response for "valid" sign from uCode */
4439 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
4440 /* We had an error bringing up the hardware, so take it
4441 * all the way back down so we can try again */
4442 IWL_DEBUG_INFO("Initialize Alive failed.\n");
4443 goto restart;
4444 }
4445
4446 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
4447 * This is a paranoid check, because we would not have gotten the
4448 * "initialize" alive if code weren't properly loaded. */
4449 if (iwl_verify_ucode(priv)) {
4450 /* Runtime instruction load was bad;
4451 * take it all the way back down so we can try again */
4452 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
4453 goto restart;
4454 }
4455
4456 /* Calculate temperature */
4457 priv->temperature = iwl4965_get_temperature(priv);
4458
4459 /* Send pointers to protocol/runtime uCode image ... init code will
4460 * load and launch runtime uCode, which will send us another "Alive"
4461 * notification. */
4462 IWL_DEBUG_INFO("Initialization Alive received.\n");
4463 if (iwl4965_set_ucode_ptrs(priv)) {
4464 /* Runtime instruction load won't happen;
4465 * take it all the way back down so we can try again */
4466 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
4467 goto restart;
4468 }
4469 return;
4470
4471 restart:
4472 queue_work(priv->workqueue, &priv->restart);
4473 }
4474
4475
4476 /**
4477 * iwl4965_alive_start - called after REPLY_ALIVE notification received
4478 * from protocol/runtime uCode (initialization uCode's
4479 * Alive gets handled by iwl4965_init_alive_start()).
4480 */
4481 static void iwl4965_alive_start(struct iwl_priv *priv)
4482 {
4483 int ret = 0;
4484
4485 IWL_DEBUG_INFO("Runtime Alive received.\n");
4486
4487 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
4488 /* We had an error bringing up the hardware, so take it
4489 * all the way back down so we can try again */
4490 IWL_DEBUG_INFO("Alive failed.\n");
4491 goto restart;
4492 }
4493
4494 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
4495 * This is a paranoid check, because we would not have gotten the
4496 * "runtime" alive if code weren't properly loaded. */
4497 if (iwl_verify_ucode(priv)) {
4498 /* Runtime instruction load was bad;
4499 * take it all the way back down so we can try again */
4500 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
4501 goto restart;
4502 }
4503
4504 iwlcore_clear_stations_table(priv);
4505
4506 ret = priv->cfg->ops->lib->alive_notify(priv);
4507 if (ret) {
4508 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
4509 ret);
4510 goto restart;
4511 }
4512
4513 /* After the ALIVE response, we can send host commands to 4965 uCode */
4514 set_bit(STATUS_ALIVE, &priv->status);
4515
4516 /* Clear out the uCode error bit if it is set */
4517 clear_bit(STATUS_FW_ERROR, &priv->status);
4518
4519 if (iwl_is_rfkill(priv))
4520 return;
4521
4522 ieee80211_start_queues(priv->hw);
4523
4524 priv->active_rate = priv->rates_mask;
4525 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
4526
4527 if (iwl_is_associated(priv)) {
4528 struct iwl4965_rxon_cmd *active_rxon =
4529 (struct iwl4965_rxon_cmd *)(&priv->active_rxon);
4530
4531 memcpy(&priv->staging_rxon, &priv->active_rxon,
4532 sizeof(priv->staging_rxon));
4533 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4534 } else {
4535 /* Initialize our rx_config data */
4536 iwl4965_connection_init_rx_config(priv);
4537 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
4538 }
4539
4540 /* Configure Bluetooth device coexistence support */
4541 iwl4965_send_bt_config(priv);
4542
4543 /* Configure the adapter for unassociated operation */
4544 iwl4965_commit_rxon(priv);
4545
4546 /* At this point, the NIC is initialized and operational */
4547 priv->notif_missed_beacons = 0;
4548
4549 iwl4965_rf_kill_ct_config(priv);
4550
4551 iwl_leds_register(priv);
4552
4553 IWL_DEBUG_INFO("ALIVE processing complete.\n");
4554 set_bit(STATUS_READY, &priv->status);
4555 wake_up_interruptible(&priv->wait_command_queue);
4556
4557 if (priv->error_recovering)
4558 iwl4965_error_recovery(priv);
4559
4560 iwlcore_low_level_notify(priv, IWLCORE_START_EVT);
4561 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
4562 return;
4563
4564 restart:
4565 queue_work(priv->workqueue, &priv->restart);
4566 }
4567
4568 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv);
4569
4570 static void __iwl4965_down(struct iwl_priv *priv)
4571 {
4572 unsigned long flags;
4573 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
4574 struct ieee80211_conf *conf = NULL;
4575
4576 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
4577
4578 conf = ieee80211_get_hw_conf(priv->hw);
4579
4580 if (!exit_pending)
4581 set_bit(STATUS_EXIT_PENDING, &priv->status);
4582
4583 iwl_leds_unregister(priv);
4584
4585 iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT);
4586
4587 iwlcore_clear_stations_table(priv);
4588
4589 /* Unblock any waiting calls */
4590 wake_up_interruptible_all(&priv->wait_command_queue);
4591
4592 /* Wipe out the EXIT_PENDING status bit if we are not actually
4593 * exiting the module */
4594 if (!exit_pending)
4595 clear_bit(STATUS_EXIT_PENDING, &priv->status);
4596
4597 /* stop and reset the on-board processor */
4598 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
4599
4600 /* tell the device to stop sending interrupts */
4601 spin_lock_irqsave(&priv->lock, flags);
4602 iwl4965_disable_interrupts(priv);
4603 spin_unlock_irqrestore(&priv->lock, flags);
4604 iwl_synchronize_irq(priv);
4605
4606 if (priv->mac80211_registered)
4607 ieee80211_stop_queues(priv->hw);
4608
4609 /* If we have not previously called iwl4965_init() then
4610 * clear all bits but the RF Kill and SUSPEND bits and return */
4611 if (!iwl_is_init(priv)) {
4612 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
4613 STATUS_RF_KILL_HW |
4614 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
4615 STATUS_RF_KILL_SW |
4616 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
4617 STATUS_GEO_CONFIGURED |
4618 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
4619 STATUS_IN_SUSPEND;
4620 goto exit;
4621 }
4622
4623 /* ...otherwise clear out all the status bits but the RF Kill and
4624 * SUSPEND bits and continue taking the NIC down. */
4625 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
4626 STATUS_RF_KILL_HW |
4627 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
4628 STATUS_RF_KILL_SW |
4629 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
4630 STATUS_GEO_CONFIGURED |
4631 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
4632 STATUS_IN_SUSPEND |
4633 test_bit(STATUS_FW_ERROR, &priv->status) <<
4634 STATUS_FW_ERROR;
4635
4636 spin_lock_irqsave(&priv->lock, flags);
4637 iwl_clear_bit(priv, CSR_GP_CNTRL,
4638 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4639 spin_unlock_irqrestore(&priv->lock, flags);
4640
4641 iwl4965_hw_txq_ctx_stop(priv);
4642 iwl4965_hw_rxq_stop(priv);
4643
4644 spin_lock_irqsave(&priv->lock, flags);
4645 if (!iwl_grab_nic_access(priv)) {
4646 iwl_write_prph(priv, APMG_CLK_DIS_REG,
4647 APMG_CLK_VAL_DMA_CLK_RQT);
4648 iwl_release_nic_access(priv);
4649 }
4650 spin_unlock_irqrestore(&priv->lock, flags);
4651
4652 udelay(5);
4653
4654 iwl4965_hw_nic_stop_master(priv);
4655 iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
4656 iwl4965_hw_nic_reset(priv);
4657 priv->cfg->ops->lib->free_shared_mem(priv);
4658
4659 exit:
4660 memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
4661
4662 if (priv->ibss_beacon)
4663 dev_kfree_skb(priv->ibss_beacon);
4664 priv->ibss_beacon = NULL;
4665
4666 /* clear out any free frames */
4667 iwl4965_clear_free_frames(priv);
4668 }
4669
4670 static void iwl4965_down(struct iwl_priv *priv)
4671 {
4672 mutex_lock(&priv->mutex);
4673 __iwl4965_down(priv);
4674 mutex_unlock(&priv->mutex);
4675
4676 iwl4965_cancel_deferred_work(priv);
4677 }
4678
4679 #define MAX_HW_RESTARTS 5
4680
4681 static int __iwl4965_up(struct iwl_priv *priv)
4682 {
4683 int i;
4684 int ret;
4685
4686 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4687 IWL_WARNING("Exit pending; will not bring the NIC up\n");
4688 return -EIO;
4689 }
4690
4691 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
4692 IWL_WARNING("Radio disabled by SW RF kill (module "
4693 "parameter)\n");
4694 iwl_rfkill_set_hw_state(priv);
4695 return -ENODEV;
4696 }
4697
4698 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
4699 IWL_ERROR("ucode not available for device bringup\n");
4700 return -EIO;
4701 }
4702
4703 /* If platform's RF_KILL switch is NOT set to KILL */
4704 if (iwl_read32(priv, CSR_GP_CNTRL) &
4705 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
4706 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4707 else {
4708 set_bit(STATUS_RF_KILL_HW, &priv->status);
4709 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
4710 iwl_rfkill_set_hw_state(priv);
4711 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
4712 return -ENODEV;
4713 }
4714 }
4715
4716 iwl_rfkill_set_hw_state(priv);
4717 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
4718
4719 ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
4720 if (ret) {
4721 IWL_ERROR("Unable to allocate shared memory\n");
4722 return ret;
4723 }
4724
4725 ret = priv->cfg->ops->lib->hw_nic_init(priv);
4726 if (ret) {
4727 IWL_ERROR("Unable to init nic\n");
4728 return ret;
4729 }
4730
4731 /* make sure rfkill handshake bits are cleared */
4732 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
4733 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
4734 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4735
4736 /* clear (again), then enable host interrupts */
4737 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
4738 iwl4965_enable_interrupts(priv);
4739
4740 /* really make sure rfkill handshake bits are cleared */
4741 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
4742 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
4743
4744 /* Copy original ucode data image from disk into backup cache.
4745 * This will be used to initialize the on-board processor's
4746 * data SRAM for a clean start when the runtime program first loads. */
4747 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
4748 priv->ucode_data.len);
4749
4750 /* We return success when we resume from suspend and rf_kill is on. */
4751 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
4752 return 0;
4753
4754 for (i = 0; i < MAX_HW_RESTARTS; i++) {
4755
4756 iwlcore_clear_stations_table(priv);
4757
4758 /* load bootstrap state machine,
4759 * load bootstrap program into processor's memory,
4760 * prepare to load the "initialize" uCode */
4761 ret = priv->cfg->ops->lib->load_ucode(priv);
4762
4763 if (ret) {
4764 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
4765 continue;
4766 }
4767
4768 /* start card; "initialize" will load runtime ucode */
4769 iwl4965_nic_start(priv);
4770
4771 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
4772
4773 return 0;
4774 }
4775
4776 set_bit(STATUS_EXIT_PENDING, &priv->status);
4777 __iwl4965_down(priv);
4778
4779 /* tried to restart and config the device for as long as our
4780 * patience could withstand */
4781 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
4782 return -EIO;
4783 }
4784
4785
4786 /*****************************************************************************
4787 *
4788 * Workqueue callbacks
4789 *
4790 *****************************************************************************/
4791
4792 static void iwl4965_bg_init_alive_start(struct work_struct *data)
4793 {
4794 struct iwl_priv *priv =
4795 container_of(data, struct iwl_priv, init_alive_start.work);
4796
4797 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4798 return;
4799
4800 mutex_lock(&priv->mutex);
4801 iwl4965_init_alive_start(priv);
4802 mutex_unlock(&priv->mutex);
4803 }
4804
4805 static void iwl4965_bg_alive_start(struct work_struct *data)
4806 {
4807 struct iwl_priv *priv =
4808 container_of(data, struct iwl_priv, alive_start.work);
4809
4810 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4811 return;
4812
4813 mutex_lock(&priv->mutex);
4814 iwl4965_alive_start(priv);
4815 mutex_unlock(&priv->mutex);
4816 }
4817
4818 static void iwl4965_bg_rf_kill(struct work_struct *work)
4819 {
4820 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
4821
4822 wake_up_interruptible(&priv->wait_command_queue);
4823
4824 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4825 return;
4826
4827 mutex_lock(&priv->mutex);
4828
4829 if (!iwl_is_rfkill(priv)) {
4830 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
4831 "HW and/or SW RF Kill no longer active, restarting "
4832 "device\n");
4833 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
4834 queue_work(priv->workqueue, &priv->restart);
4835 } else {
4836 /* make sure mac80211 stop sending Tx frame */
4837 if (priv->mac80211_registered)
4838 ieee80211_stop_queues(priv->hw);
4839
4840 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
4841 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
4842 "disabled by SW switch\n");
4843 else
4844 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
4845 "Kill switch must be turned off for "
4846 "wireless networking to work.\n");
4847 }
4848 iwl_rfkill_set_hw_state(priv);
4849
4850 mutex_unlock(&priv->mutex);
4851 }
4852
4853 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
4854
4855 static void iwl4965_bg_scan_check(struct work_struct *data)
4856 {
4857 struct iwl_priv *priv =
4858 container_of(data, struct iwl_priv, scan_check.work);
4859
4860 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4861 return;
4862
4863 mutex_lock(&priv->mutex);
4864 if (test_bit(STATUS_SCANNING, &priv->status) ||
4865 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
4866 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
4867 "Scan completion watchdog resetting adapter (%dms)\n",
4868 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
4869
4870 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
4871 iwl4965_send_scan_abort(priv);
4872 }
4873 mutex_unlock(&priv->mutex);
4874 }
4875
4876 static void iwl4965_bg_request_scan(struct work_struct *data)
4877 {
4878 struct iwl_priv *priv =
4879 container_of(data, struct iwl_priv, request_scan);
4880 struct iwl_host_cmd cmd = {
4881 .id = REPLY_SCAN_CMD,
4882 .len = sizeof(struct iwl4965_scan_cmd),
4883 .meta.flags = CMD_SIZE_HUGE,
4884 };
4885 struct iwl4965_scan_cmd *scan;
4886 struct ieee80211_conf *conf = NULL;
4887 u16 cmd_len;
4888 enum ieee80211_band band;
4889 u8 direct_mask;
4890 int ret = 0;
4891
4892 conf = ieee80211_get_hw_conf(priv->hw);
4893
4894 mutex_lock(&priv->mutex);
4895
4896 if (!iwl_is_ready(priv)) {
4897 IWL_WARNING("request scan called when driver not ready.\n");
4898 goto done;
4899 }
4900
4901 /* Make sure the scan wasn't cancelled before this queued work
4902 * was given the chance to run... */
4903 if (!test_bit(STATUS_SCANNING, &priv->status))
4904 goto done;
4905
4906 /* This should never be called or scheduled if there is currently
4907 * a scan active in the hardware. */
4908 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
4909 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
4910 "Ignoring second request.\n");
4911 ret = -EIO;
4912 goto done;
4913 }
4914
4915 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4916 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
4917 goto done;
4918 }
4919
4920 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
4921 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
4922 goto done;
4923 }
4924
4925 if (iwl_is_rfkill(priv)) {
4926 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
4927 goto done;
4928 }
4929
4930 if (!test_bit(STATUS_READY, &priv->status)) {
4931 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
4932 goto done;
4933 }
4934
4935 if (!priv->scan_bands) {
4936 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
4937 goto done;
4938 }
4939
4940 if (!priv->scan) {
4941 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
4942 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
4943 if (!priv->scan) {
4944 ret = -ENOMEM;
4945 goto done;
4946 }
4947 }
4948 scan = priv->scan;
4949 memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
4950
4951 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
4952 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
4953
4954 if (iwl_is_associated(priv)) {
4955 u16 interval = 0;
4956 u32 extra;
4957 u32 suspend_time = 100;
4958 u32 scan_suspend_time = 100;
4959 unsigned long flags;
4960
4961 IWL_DEBUG_INFO("Scanning while associated...\n");
4962
4963 spin_lock_irqsave(&priv->lock, flags);
4964 interval = priv->beacon_int;
4965 spin_unlock_irqrestore(&priv->lock, flags);
4966
4967 scan->suspend_time = 0;
4968 scan->max_out_time = cpu_to_le32(200 * 1024);
4969 if (!interval)
4970 interval = suspend_time;
4971
4972 extra = (suspend_time / interval) << 22;
4973 scan_suspend_time = (extra |
4974 ((suspend_time % interval) * 1024));
4975 scan->suspend_time = cpu_to_le32(scan_suspend_time);
4976 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
4977 scan_suspend_time, interval);
4978 }
4979
4980 /* We should add the ability for user to lock to PASSIVE ONLY */
4981 if (priv->one_direct_scan) {
4982 IWL_DEBUG_SCAN
4983 ("Kicking off one direct scan for '%s'\n",
4984 iwl4965_escape_essid(priv->direct_ssid,
4985 priv->direct_ssid_len));
4986 scan->direct_scan[0].id = WLAN_EID_SSID;
4987 scan->direct_scan[0].len = priv->direct_ssid_len;
4988 memcpy(scan->direct_scan[0].ssid,
4989 priv->direct_ssid, priv->direct_ssid_len);
4990 direct_mask = 1;
4991 } else if (!iwl_is_associated(priv) && priv->essid_len) {
4992 IWL_DEBUG_SCAN
4993 ("Kicking off one direct scan for '%s' when not associated\n",
4994 iwl4965_escape_essid(priv->essid, priv->essid_len));
4995 scan->direct_scan[0].id = WLAN_EID_SSID;
4996 scan->direct_scan[0].len = priv->essid_len;
4997 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
4998 direct_mask = 1;
4999 } else {
5000 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
5001 direct_mask = 0;
5002 }
5003
5004 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
5005 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
5006 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
5007
5008
5009 switch (priv->scan_bands) {
5010 case 2:
5011 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
5012 scan->tx_cmd.rate_n_flags =
5013 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
5014 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
5015
5016 scan->good_CRC_th = 0;
5017 band = IEEE80211_BAND_2GHZ;
5018 break;
5019
5020 case 1:
5021 scan->tx_cmd.rate_n_flags =
5022 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
5023 RATE_MCS_ANT_B_MSK);
5024 scan->good_CRC_th = IWL_GOOD_CRC_TH;
5025 band = IEEE80211_BAND_5GHZ;
5026 break;
5027
5028 default:
5029 IWL_WARNING("Invalid scan band count\n");
5030 goto done;
5031 }
5032
5033 /* We don't build a direct scan probe request; the uCode will do
5034 * that based on the direct_mask added to each channel entry */
5035 cmd_len = iwl4965_fill_probe_req(priv, band,
5036 (struct ieee80211_mgmt *)scan->data,
5037 IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
5038
5039 scan->tx_cmd.len = cpu_to_le16(cmd_len);
5040 /* select Rx chains */
5041
5042 /* Force use of chains B and C (0x6) for scan Rx.
5043 * Avoid A (0x1) because of its off-channel reception on A-band.
5044 * MIMO is not used here, but value is required to make uCode happy. */
5045 scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
5046 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
5047 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
5048 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
5049
5050 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
5051 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
5052
5053 if (direct_mask)
5054 scan->channel_count =
5055 iwl4965_get_channels_for_scan(
5056 priv, band, 1, /* active */
5057 direct_mask,
5058 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
5059 else
5060 scan->channel_count =
5061 iwl4965_get_channels_for_scan(
5062 priv, band, 0, /* passive */
5063 direct_mask,
5064 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
5065
5066 scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK |
5067 RXON_FILTER_BCON_AWARE_MSK);
5068 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
5069 scan->channel_count * sizeof(struct iwl4965_scan_channel);
5070 cmd.data = scan;
5071 scan->len = cpu_to_le16(cmd.len);
5072
5073 set_bit(STATUS_SCAN_HW, &priv->status);
5074 ret = iwl_send_cmd_sync(priv, &cmd);
5075 if (ret)
5076 goto done;
5077
5078 queue_delayed_work(priv->workqueue, &priv->scan_check,
5079 IWL_SCAN_CHECK_WATCHDOG);
5080
5081 mutex_unlock(&priv->mutex);
5082 return;
5083
5084 done:
5085 /* inform mac80211 scan aborted */
5086 queue_work(priv->workqueue, &priv->scan_completed);
5087 mutex_unlock(&priv->mutex);
5088 }
5089
5090 static void iwl4965_bg_up(struct work_struct *data)
5091 {
5092 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
5093
5094 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5095 return;
5096
5097 mutex_lock(&priv->mutex);
5098 __iwl4965_up(priv);
5099 mutex_unlock(&priv->mutex);
5100 }
5101
5102 static void iwl4965_bg_restart(struct work_struct *data)
5103 {
5104 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
5105
5106 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5107 return;
5108
5109 iwl4965_down(priv);
5110 queue_work(priv->workqueue, &priv->up);
5111 }
5112
5113 static void iwl4965_bg_rx_replenish(struct work_struct *data)
5114 {
5115 struct iwl_priv *priv =
5116 container_of(data, struct iwl_priv, rx_replenish);
5117
5118 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5119 return;
5120
5121 mutex_lock(&priv->mutex);
5122 iwl_rx_replenish(priv);
5123 mutex_unlock(&priv->mutex);
5124 }
5125
5126 #define IWL_DELAY_NEXT_SCAN (HZ*2)
5127
5128 static void iwl4965_post_associate(struct iwl_priv *priv)
5129 {
5130 struct ieee80211_conf *conf = NULL;
5131 int ret = 0;
5132 DECLARE_MAC_BUF(mac);
5133
5134 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
5135 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
5136 return;
5137 }
5138
5139 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
5140 priv->assoc_id,
5141 print_mac(mac, priv->active_rxon.bssid_addr));
5142
5143
5144 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5145 return;
5146
5147
5148 if (!priv->vif || !priv->is_open)
5149 return;
5150
5151 iwl4965_scan_cancel_timeout(priv, 200);
5152
5153 conf = ieee80211_get_hw_conf(priv->hw);
5154
5155 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5156 iwl4965_commit_rxon(priv);
5157
5158 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
5159 iwl4965_setup_rxon_timing(priv);
5160 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
5161 sizeof(priv->rxon_timing), &priv->rxon_timing);
5162 if (ret)
5163 IWL_WARNING("REPLY_RXON_TIMING failed - "
5164 "Attempting to continue.\n");
5165
5166 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
5167
5168 #ifdef CONFIG_IWL4965_HT
5169 if (priv->current_ht_config.is_ht)
5170 iwl4965_set_rxon_ht(priv, &priv->current_ht_config);
5171 #endif /* CONFIG_IWL4965_HT*/
5172 iwl_set_rxon_chain(priv);
5173 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
5174
5175 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
5176 priv->assoc_id, priv->beacon_int);
5177
5178 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
5179 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
5180 else
5181 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
5182
5183 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
5184 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
5185 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
5186 else
5187 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
5188
5189 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
5190 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
5191
5192 }
5193
5194 iwl4965_commit_rxon(priv);
5195
5196 switch (priv->iw_mode) {
5197 case IEEE80211_IF_TYPE_STA:
5198 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
5199 break;
5200
5201 case IEEE80211_IF_TYPE_IBSS:
5202
5203 /* clear out the station table */
5204 iwlcore_clear_stations_table(priv);
5205
5206 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
5207 iwl4965_rxon_add_station(priv, priv->bssid, 0);
5208 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
5209 iwl4965_send_beacon_cmd(priv);
5210
5211 break;
5212
5213 default:
5214 IWL_ERROR("%s Should not be called in %d mode\n",
5215 __FUNCTION__, priv->iw_mode);
5216 break;
5217 }
5218
5219 iwl4965_sequence_reset(priv);
5220
5221 /* Enable Rx differential gain and sensitivity calibrations */
5222 iwl_chain_noise_reset(priv);
5223 priv->start_calib = 1;
5224
5225 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
5226 priv->assoc_station_added = 1;
5227
5228 iwl4965_activate_qos(priv, 0);
5229
5230 iwl_power_update_mode(priv, 0);
5231 /* we have just associated, don't start scan too early */
5232 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
5233 }
5234
5235
5236 static void iwl4965_bg_post_associate(struct work_struct *data)
5237 {
5238 struct iwl_priv *priv = container_of(data, struct iwl_priv,
5239 post_associate.work);
5240
5241 mutex_lock(&priv->mutex);
5242 iwl4965_post_associate(priv);
5243 mutex_unlock(&priv->mutex);
5244
5245 }
5246
5247 static void iwl4965_bg_abort_scan(struct work_struct *work)
5248 {
5249 struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
5250
5251 if (!iwl_is_ready(priv))
5252 return;
5253
5254 mutex_lock(&priv->mutex);
5255
5256 set_bit(STATUS_SCAN_ABORTING, &priv->status);
5257 iwl4965_send_scan_abort(priv);
5258
5259 mutex_unlock(&priv->mutex);
5260 }
5261
5262 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
5263
5264 static void iwl4965_bg_scan_completed(struct work_struct *work)
5265 {
5266 struct iwl_priv *priv =
5267 container_of(work, struct iwl_priv, scan_completed);
5268
5269 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
5270
5271 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5272 return;
5273
5274 if (test_bit(STATUS_CONF_PENDING, &priv->status))
5275 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
5276
5277 ieee80211_scan_completed(priv->hw);
5278
5279 /* Since setting the TXPOWER may have been deferred while
5280 * performing the scan, fire one off */
5281 mutex_lock(&priv->mutex);
5282 iwl4965_hw_reg_send_txpower(priv);
5283 mutex_unlock(&priv->mutex);
5284 }
5285
5286 /*****************************************************************************
5287 *
5288 * mac80211 entry point functions
5289 *
5290 *****************************************************************************/
5291
5292 #define UCODE_READY_TIMEOUT (2 * HZ)
5293
5294 static int iwl4965_mac_start(struct ieee80211_hw *hw)
5295 {
5296 struct iwl_priv *priv = hw->priv;
5297 int ret;
5298
5299 IWL_DEBUG_MAC80211("enter\n");
5300
5301 if (pci_enable_device(priv->pci_dev)) {
5302 IWL_ERROR("Fail to pci_enable_device\n");
5303 return -ENODEV;
5304 }
5305 pci_restore_state(priv->pci_dev);
5306 pci_enable_msi(priv->pci_dev);
5307
5308 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
5309 DRV_NAME, priv);
5310 if (ret) {
5311 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
5312 goto out_disable_msi;
5313 }
5314
5315 /* we should be verifying the device is ready to be opened */
5316 mutex_lock(&priv->mutex);
5317
5318 memset(&priv->staging_rxon, 0, sizeof(struct iwl4965_rxon_cmd));
5319 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
5320 * ucode filename and max sizes are card-specific. */
5321
5322 if (!priv->ucode_code.len) {
5323 ret = iwl4965_read_ucode(priv);
5324 if (ret) {
5325 IWL_ERROR("Could not read microcode: %d\n", ret);
5326 mutex_unlock(&priv->mutex);
5327 goto out_release_irq;
5328 }
5329 }
5330
5331 ret = __iwl4965_up(priv);
5332
5333 mutex_unlock(&priv->mutex);
5334
5335 if (ret)
5336 goto out_release_irq;
5337
5338 IWL_DEBUG_INFO("Start UP work done.\n");
5339
5340 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
5341 return 0;
5342
5343 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
5344 * mac80211 will not be run successfully. */
5345 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
5346 test_bit(STATUS_READY, &priv->status),
5347 UCODE_READY_TIMEOUT);
5348 if (!ret) {
5349 if (!test_bit(STATUS_READY, &priv->status)) {
5350 IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
5351 jiffies_to_msecs(UCODE_READY_TIMEOUT));
5352 ret = -ETIMEDOUT;
5353 goto out_release_irq;
5354 }
5355 }
5356
5357 priv->is_open = 1;
5358 IWL_DEBUG_MAC80211("leave\n");
5359 return 0;
5360
5361 out_release_irq:
5362 free_irq(priv->pci_dev->irq, priv);
5363 out_disable_msi:
5364 pci_disable_msi(priv->pci_dev);
5365 pci_disable_device(priv->pci_dev);
5366 priv->is_open = 0;
5367 IWL_DEBUG_MAC80211("leave - failed\n");
5368 return ret;
5369 }
5370
5371 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
5372 {
5373 struct iwl_priv *priv = hw->priv;
5374
5375 IWL_DEBUG_MAC80211("enter\n");
5376
5377 if (!priv->is_open) {
5378 IWL_DEBUG_MAC80211("leave - skip\n");
5379 return;
5380 }
5381
5382 priv->is_open = 0;
5383
5384 if (iwl_is_ready_rf(priv)) {
5385 /* stop mac, cancel any scan request and clear
5386 * RXON_FILTER_ASSOC_MSK BIT
5387 */
5388 mutex_lock(&priv->mutex);
5389 iwl4965_scan_cancel_timeout(priv, 100);
5390 cancel_delayed_work(&priv->post_associate);
5391 mutex_unlock(&priv->mutex);
5392 }
5393
5394 iwl4965_down(priv);
5395
5396 flush_workqueue(priv->workqueue);
5397 free_irq(priv->pci_dev->irq, priv);
5398 pci_disable_msi(priv->pci_dev);
5399 pci_save_state(priv->pci_dev);
5400 pci_disable_device(priv->pci_dev);
5401
5402 IWL_DEBUG_MAC80211("leave\n");
5403 }
5404
5405 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
5406 struct ieee80211_tx_control *ctl)
5407 {
5408 struct iwl_priv *priv = hw->priv;
5409
5410 IWL_DEBUG_MAC80211("enter\n");
5411
5412 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
5413 IWL_DEBUG_MAC80211("leave - monitor\n");
5414 return -1;
5415 }
5416
5417 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
5418 ctl->tx_rate->bitrate);
5419
5420 if (iwl4965_tx_skb(priv, skb, ctl))
5421 dev_kfree_skb_any(skb);
5422
5423 IWL_DEBUG_MAC80211("leave\n");
5424 return 0;
5425 }
5426
5427 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
5428 struct ieee80211_if_init_conf *conf)
5429 {
5430 struct iwl_priv *priv = hw->priv;
5431 unsigned long flags;
5432 DECLARE_MAC_BUF(mac);
5433
5434 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
5435
5436 if (priv->vif) {
5437 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
5438 return -EOPNOTSUPP;
5439 }
5440
5441 spin_lock_irqsave(&priv->lock, flags);
5442 priv->vif = conf->vif;
5443
5444 spin_unlock_irqrestore(&priv->lock, flags);
5445
5446 mutex_lock(&priv->mutex);
5447
5448 if (conf->mac_addr) {
5449 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
5450 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
5451 }
5452
5453 if (iwl_is_ready(priv))
5454 iwl4965_set_mode(priv, conf->type);
5455
5456 mutex_unlock(&priv->mutex);
5457
5458 IWL_DEBUG_MAC80211("leave\n");
5459 return 0;
5460 }
5461
5462 /**
5463 * iwl4965_mac_config - mac80211 config callback
5464 *
5465 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
5466 * be set inappropriately and the driver currently sets the hardware up to
5467 * use it whenever needed.
5468 */
5469 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
5470 {
5471 struct iwl_priv *priv = hw->priv;
5472 const struct iwl_channel_info *ch_info;
5473 unsigned long flags;
5474 int ret = 0;
5475
5476 mutex_lock(&priv->mutex);
5477 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
5478
5479 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
5480
5481 if (!iwl_is_ready(priv)) {
5482 IWL_DEBUG_MAC80211("leave - not ready\n");
5483 ret = -EIO;
5484 goto out;
5485 }
5486
5487 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
5488 test_bit(STATUS_SCANNING, &priv->status))) {
5489 IWL_DEBUG_MAC80211("leave - scanning\n");
5490 set_bit(STATUS_CONF_PENDING, &priv->status);
5491 mutex_unlock(&priv->mutex);
5492 return 0;
5493 }
5494
5495 spin_lock_irqsave(&priv->lock, flags);
5496
5497 ch_info = iwl_get_channel_info(priv, conf->channel->band,
5498 ieee80211_frequency_to_channel(conf->channel->center_freq));
5499 if (!is_channel_valid(ch_info)) {
5500 IWL_DEBUG_MAC80211("leave - invalid channel\n");
5501 spin_unlock_irqrestore(&priv->lock, flags);
5502 ret = -EINVAL;
5503 goto out;
5504 }
5505
5506 #ifdef CONFIG_IWL4965_HT
5507 /* if we are switching from ht to 2.4 clear flags
5508 * from any ht related info since 2.4 does not
5509 * support ht */
5510 if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
5511 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
5512 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
5513 #endif
5514 )
5515 priv->staging_rxon.flags = 0;
5516 #endif /* CONFIG_IWL4965_HT */
5517
5518 iwl_set_rxon_channel(priv, conf->channel->band,
5519 ieee80211_frequency_to_channel(conf->channel->center_freq));
5520
5521 iwl4965_set_flags_for_phymode(priv, conf->channel->band);
5522
5523 /* The list of supported rates and rate mask can be different
5524 * for each band; since the band may have changed, reset
5525 * the rate mask to what mac80211 lists */
5526 iwl4965_set_rate(priv);
5527
5528 spin_unlock_irqrestore(&priv->lock, flags);
5529
5530 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
5531 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
5532 iwl4965_hw_channel_switch(priv, conf->channel);
5533 goto out;
5534 }
5535 #endif
5536
5537 if (priv->cfg->ops->lib->radio_kill_sw)
5538 priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled);
5539
5540 if (!conf->radio_enabled) {
5541 IWL_DEBUG_MAC80211("leave - radio disabled\n");
5542 goto out;
5543 }
5544
5545 if (iwl_is_rfkill(priv)) {
5546 IWL_DEBUG_MAC80211("leave - RF kill\n");
5547 ret = -EIO;
5548 goto out;
5549 }
5550
5551 iwl4965_set_rate(priv);
5552
5553 if (memcmp(&priv->active_rxon,
5554 &priv->staging_rxon, sizeof(priv->staging_rxon)))
5555 iwl4965_commit_rxon(priv);
5556 else
5557 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
5558
5559 IWL_DEBUG_MAC80211("leave\n");
5560
5561 out:
5562 clear_bit(STATUS_CONF_PENDING, &priv->status);
5563 mutex_unlock(&priv->mutex);
5564 return ret;
5565 }
5566
5567 static void iwl4965_config_ap(struct iwl_priv *priv)
5568 {
5569 int ret = 0;
5570
5571 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5572 return;
5573
5574 /* The following should be done only at AP bring up */
5575 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
5576
5577 /* RXON - unassoc (to set timing command) */
5578 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5579 iwl4965_commit_rxon(priv);
5580
5581 /* RXON Timing */
5582 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
5583 iwl4965_setup_rxon_timing(priv);
5584 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
5585 sizeof(priv->rxon_timing), &priv->rxon_timing);
5586 if (ret)
5587 IWL_WARNING("REPLY_RXON_TIMING failed - "
5588 "Attempting to continue.\n");
5589
5590 iwl_set_rxon_chain(priv);
5591
5592 /* FIXME: what should be the assoc_id for AP? */
5593 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
5594 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
5595 priv->staging_rxon.flags |=
5596 RXON_FLG_SHORT_PREAMBLE_MSK;
5597 else
5598 priv->staging_rxon.flags &=
5599 ~RXON_FLG_SHORT_PREAMBLE_MSK;
5600
5601 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
5602 if (priv->assoc_capability &
5603 WLAN_CAPABILITY_SHORT_SLOT_TIME)
5604 priv->staging_rxon.flags |=
5605 RXON_FLG_SHORT_SLOT_MSK;
5606 else
5607 priv->staging_rxon.flags &=
5608 ~RXON_FLG_SHORT_SLOT_MSK;
5609
5610 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
5611 priv->staging_rxon.flags &=
5612 ~RXON_FLG_SHORT_SLOT_MSK;
5613 }
5614 /* restore RXON assoc */
5615 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
5616 iwl4965_commit_rxon(priv);
5617 iwl4965_activate_qos(priv, 1);
5618 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
5619 }
5620 iwl4965_send_beacon_cmd(priv);
5621
5622 /* FIXME - we need to add code here to detect a totally new
5623 * configuration, reset the AP, unassoc, rxon timing, assoc,
5624 * clear sta table, add BCAST sta... */
5625 }
5626
5627 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
5628 struct ieee80211_vif *vif,
5629 struct ieee80211_if_conf *conf)
5630 {
5631 struct iwl_priv *priv = hw->priv;
5632 DECLARE_MAC_BUF(mac);
5633 unsigned long flags;
5634 int rc;
5635
5636 if (conf == NULL)
5637 return -EIO;
5638
5639 if (priv->vif != vif) {
5640 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
5641 return 0;
5642 }
5643
5644 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
5645 (!conf->beacon || !conf->ssid_len)) {
5646 IWL_DEBUG_MAC80211
5647 ("Leaving in AP mode because HostAPD is not ready.\n");
5648 return 0;
5649 }
5650
5651 if (!iwl_is_alive(priv))
5652 return -EAGAIN;
5653
5654 mutex_lock(&priv->mutex);
5655
5656 if (conf->bssid)
5657 IWL_DEBUG_MAC80211("bssid: %s\n",
5658 print_mac(mac, conf->bssid));
5659
5660 /*
5661 * very dubious code was here; the probe filtering flag is never set:
5662 *
5663 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
5664 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
5665 */
5666
5667 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
5668 if (!conf->bssid) {
5669 conf->bssid = priv->mac_addr;
5670 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
5671 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
5672 print_mac(mac, conf->bssid));
5673 }
5674 if (priv->ibss_beacon)
5675 dev_kfree_skb(priv->ibss_beacon);
5676
5677 priv->ibss_beacon = conf->beacon;
5678 }
5679
5680 if (iwl_is_rfkill(priv))
5681 goto done;
5682
5683 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
5684 !is_multicast_ether_addr(conf->bssid)) {
5685 /* If there is currently a HW scan going on in the background
5686 * then we need to cancel it else the RXON below will fail. */
5687 if (iwl4965_scan_cancel_timeout(priv, 100)) {
5688 IWL_WARNING("Aborted scan still in progress "
5689 "after 100ms\n");
5690 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
5691 mutex_unlock(&priv->mutex);
5692 return -EAGAIN;
5693 }
5694 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
5695
5696 /* TODO: Audit driver for usage of these members and see
5697 * if mac80211 deprecates them (priv->bssid looks like it
5698 * shouldn't be there, but I haven't scanned the IBSS code
5699 * to verify) - jpk */
5700 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
5701
5702 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
5703 iwl4965_config_ap(priv);
5704 else {
5705 rc = iwl4965_commit_rxon(priv);
5706 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
5707 iwl4965_rxon_add_station(
5708 priv, priv->active_rxon.bssid_addr, 1);
5709 }
5710
5711 } else {
5712 iwl4965_scan_cancel_timeout(priv, 100);
5713 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5714 iwl4965_commit_rxon(priv);
5715 }
5716
5717 done:
5718 spin_lock_irqsave(&priv->lock, flags);
5719 if (!conf->ssid_len)
5720 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
5721 else
5722 memcpy(priv->essid, conf->ssid, conf->ssid_len);
5723
5724 priv->essid_len = conf->ssid_len;
5725 spin_unlock_irqrestore(&priv->lock, flags);
5726
5727 IWL_DEBUG_MAC80211("leave\n");
5728 mutex_unlock(&priv->mutex);
5729
5730 return 0;
5731 }
5732
5733 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
5734 unsigned int changed_flags,
5735 unsigned int *total_flags,
5736 int mc_count, struct dev_addr_list *mc_list)
5737 {
5738 /*
5739 * XXX: dummy
5740 * see also iwl4965_connection_init_rx_config
5741 */
5742 *total_flags = 0;
5743 }
5744
5745 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
5746 struct ieee80211_if_init_conf *conf)
5747 {
5748 struct iwl_priv *priv = hw->priv;
5749
5750 IWL_DEBUG_MAC80211("enter\n");
5751
5752 mutex_lock(&priv->mutex);
5753
5754 if (iwl_is_ready_rf(priv)) {
5755 iwl4965_scan_cancel_timeout(priv, 100);
5756 cancel_delayed_work(&priv->post_associate);
5757 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5758 iwl4965_commit_rxon(priv);
5759 }
5760 if (priv->vif == conf->vif) {
5761 priv->vif = NULL;
5762 memset(priv->bssid, 0, ETH_ALEN);
5763 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
5764 priv->essid_len = 0;
5765 }
5766 mutex_unlock(&priv->mutex);
5767
5768 IWL_DEBUG_MAC80211("leave\n");
5769
5770 }
5771
5772 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
5773 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
5774 struct ieee80211_vif *vif,
5775 struct ieee80211_bss_conf *bss_conf,
5776 u32 changes)
5777 {
5778 struct iwl_priv *priv = hw->priv;
5779
5780 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
5781
5782 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
5783 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
5784 bss_conf->use_short_preamble);
5785 if (bss_conf->use_short_preamble)
5786 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
5787 else
5788 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
5789 }
5790
5791 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
5792 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
5793 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
5794 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
5795 else
5796 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
5797 }
5798
5799 if (changes & BSS_CHANGED_HT) {
5800 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
5801 iwl4965_ht_conf(priv, bss_conf);
5802 iwl_set_rxon_chain(priv);
5803 }
5804
5805 if (changes & BSS_CHANGED_ASSOC) {
5806 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
5807 /* This should never happen as this function should
5808 * never be called from interrupt context. */
5809 if (WARN_ON_ONCE(in_interrupt()))
5810 return;
5811 if (bss_conf->assoc) {
5812 priv->assoc_id = bss_conf->aid;
5813 priv->beacon_int = bss_conf->beacon_int;
5814 priv->timestamp = bss_conf->timestamp;
5815 priv->assoc_capability = bss_conf->assoc_capability;
5816 priv->next_scan_jiffies = jiffies +
5817 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
5818 mutex_lock(&priv->mutex);
5819 iwl4965_post_associate(priv);
5820 mutex_unlock(&priv->mutex);
5821 } else {
5822 priv->assoc_id = 0;
5823 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
5824 }
5825 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
5826 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
5827 iwl_send_rxon_assoc(priv);
5828 }
5829
5830 }
5831
5832 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
5833 {
5834 int rc = 0;
5835 unsigned long flags;
5836 struct iwl_priv *priv = hw->priv;
5837
5838 IWL_DEBUG_MAC80211("enter\n");
5839
5840 mutex_lock(&priv->mutex);
5841 spin_lock_irqsave(&priv->lock, flags);
5842
5843 if (!iwl_is_ready_rf(priv)) {
5844 rc = -EIO;
5845 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
5846 goto out_unlock;
5847 }
5848
5849 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
5850 rc = -EIO;
5851 IWL_ERROR("ERROR: APs don't scan\n");
5852 goto out_unlock;
5853 }
5854
5855 /* we don't schedule scan within next_scan_jiffies period */
5856 if (priv->next_scan_jiffies &&
5857 time_after(priv->next_scan_jiffies, jiffies)) {
5858 rc = -EAGAIN;
5859 goto out_unlock;
5860 }
5861 /* if we just finished scan ask for delay */
5862 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
5863 IWL_DELAY_NEXT_SCAN, jiffies)) {
5864 rc = -EAGAIN;
5865 goto out_unlock;
5866 }
5867 if (len) {
5868 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
5869 iwl4965_escape_essid(ssid, len), (int)len);
5870
5871 priv->one_direct_scan = 1;
5872 priv->direct_ssid_len = (u8)
5873 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
5874 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
5875 } else
5876 priv->one_direct_scan = 0;
5877
5878 rc = iwl4965_scan_initiate(priv);
5879
5880 IWL_DEBUG_MAC80211("leave\n");
5881
5882 out_unlock:
5883 spin_unlock_irqrestore(&priv->lock, flags);
5884 mutex_unlock(&priv->mutex);
5885
5886 return rc;
5887 }
5888
5889 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
5890 struct ieee80211_key_conf *keyconf, const u8 *addr,
5891 u32 iv32, u16 *phase1key)
5892 {
5893 struct iwl_priv *priv = hw->priv;
5894 u8 sta_id = IWL_INVALID_STATION;
5895 unsigned long flags;
5896 __le16 key_flags = 0;
5897 int i;
5898 DECLARE_MAC_BUF(mac);
5899
5900 IWL_DEBUG_MAC80211("enter\n");
5901
5902 sta_id = iwl_find_station(priv, addr);
5903 if (sta_id == IWL_INVALID_STATION) {
5904 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
5905 print_mac(mac, addr));
5906 return;
5907 }
5908
5909 iwl4965_scan_cancel_timeout(priv, 100);
5910
5911 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
5912 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
5913 key_flags &= ~STA_KEY_FLG_INVALID;
5914
5915 if (sta_id == priv->hw_params.bcast_sta_id)
5916 key_flags |= STA_KEY_MULTICAST_MSK;
5917
5918 spin_lock_irqsave(&priv->sta_lock, flags);
5919
5920 priv->stations[sta_id].sta.key.key_flags = key_flags;
5921 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
5922
5923 for (i = 0; i < 5; i++)
5924 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
5925 cpu_to_le16(phase1key[i]);
5926
5927 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
5928 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
5929
5930 iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
5931
5932 spin_unlock_irqrestore(&priv->sta_lock, flags);
5933
5934 IWL_DEBUG_MAC80211("leave\n");
5935 }
5936
5937 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
5938 const u8 *local_addr, const u8 *addr,
5939 struct ieee80211_key_conf *key)
5940 {
5941 struct iwl_priv *priv = hw->priv;
5942 DECLARE_MAC_BUF(mac);
5943 int ret = 0;
5944 u8 sta_id = IWL_INVALID_STATION;
5945 u8 is_default_wep_key = 0;
5946
5947 IWL_DEBUG_MAC80211("enter\n");
5948
5949 if (priv->hw_params.sw_crypto) {
5950 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
5951 return -EOPNOTSUPP;
5952 }
5953
5954 if (is_zero_ether_addr(addr))
5955 /* only support pairwise keys */
5956 return -EOPNOTSUPP;
5957
5958 sta_id = iwl_find_station(priv, addr);
5959 if (sta_id == IWL_INVALID_STATION) {
5960 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
5961 print_mac(mac, addr));
5962 return -EINVAL;
5963
5964 }
5965
5966 mutex_lock(&priv->mutex);
5967 iwl4965_scan_cancel_timeout(priv, 100);
5968 mutex_unlock(&priv->mutex);
5969
5970 /* If we are getting WEP group key and we didn't receive any key mapping
5971 * so far, we are in legacy wep mode (group key only), otherwise we are
5972 * in 1X mode.
5973 * In legacy wep mode, we use another host command to the uCode */
5974 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
5975 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
5976 if (cmd == SET_KEY)
5977 is_default_wep_key = !priv->key_mapping_key;
5978 else
5979 is_default_wep_key = priv->default_wep_key;
5980 }
5981
5982 switch (cmd) {
5983 case SET_KEY:
5984 if (is_default_wep_key)
5985 ret = iwl_set_default_wep_key(priv, key);
5986 else
5987 ret = iwl_set_dynamic_key(priv, key, sta_id);
5988
5989 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
5990 break;
5991 case DISABLE_KEY:
5992 if (is_default_wep_key)
5993 ret = iwl_remove_default_wep_key(priv, key);
5994 else
5995 ret = iwl_remove_dynamic_key(priv, key, sta_id);
5996
5997 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
5998 break;
5999 default:
6000 ret = -EINVAL;
6001 }
6002
6003 IWL_DEBUG_MAC80211("leave\n");
6004
6005 return ret;
6006 }
6007
6008 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
6009 const struct ieee80211_tx_queue_params *params)
6010 {
6011 struct iwl_priv *priv = hw->priv;
6012 unsigned long flags;
6013 int q;
6014
6015 IWL_DEBUG_MAC80211("enter\n");
6016
6017 if (!iwl_is_ready_rf(priv)) {
6018 IWL_DEBUG_MAC80211("leave - RF not ready\n");
6019 return -EIO;
6020 }
6021
6022 if (queue >= AC_NUM) {
6023 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
6024 return 0;
6025 }
6026
6027 if (!priv->qos_data.qos_enable) {
6028 priv->qos_data.qos_active = 0;
6029 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
6030 return 0;
6031 }
6032 q = AC_NUM - 1 - queue;
6033
6034 spin_lock_irqsave(&priv->lock, flags);
6035
6036 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
6037 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
6038 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
6039 priv->qos_data.def_qos_parm.ac[q].edca_txop =
6040 cpu_to_le16((params->txop * 32));
6041
6042 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
6043 priv->qos_data.qos_active = 1;
6044
6045 spin_unlock_irqrestore(&priv->lock, flags);
6046
6047 mutex_lock(&priv->mutex);
6048 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
6049 iwl4965_activate_qos(priv, 1);
6050 else if (priv->assoc_id && iwl_is_associated(priv))
6051 iwl4965_activate_qos(priv, 0);
6052
6053 mutex_unlock(&priv->mutex);
6054
6055 IWL_DEBUG_MAC80211("leave\n");
6056 return 0;
6057 }
6058
6059 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
6060 struct ieee80211_tx_queue_stats *stats)
6061 {
6062 struct iwl_priv *priv = hw->priv;
6063 int i, avail;
6064 struct iwl4965_tx_queue *txq;
6065 struct iwl4965_queue *q;
6066 unsigned long flags;
6067
6068 IWL_DEBUG_MAC80211("enter\n");
6069
6070 if (!iwl_is_ready_rf(priv)) {
6071 IWL_DEBUG_MAC80211("leave - RF not ready\n");
6072 return -EIO;
6073 }
6074
6075 spin_lock_irqsave(&priv->lock, flags);
6076
6077 for (i = 0; i < AC_NUM; i++) {
6078 txq = &priv->txq[i];
6079 q = &txq->q;
6080 avail = iwl4965_queue_space(q);
6081
6082 stats[i].len = q->n_window - avail;
6083 stats[i].limit = q->n_window - q->high_mark;
6084 stats[i].count = q->n_window;
6085
6086 }
6087 spin_unlock_irqrestore(&priv->lock, flags);
6088
6089 IWL_DEBUG_MAC80211("leave\n");
6090
6091 return 0;
6092 }
6093
6094 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
6095 struct ieee80211_low_level_stats *stats)
6096 {
6097 IWL_DEBUG_MAC80211("enter\n");
6098 IWL_DEBUG_MAC80211("leave\n");
6099
6100 return 0;
6101 }
6102
6103 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
6104 {
6105 IWL_DEBUG_MAC80211("enter\n");
6106 IWL_DEBUG_MAC80211("leave\n");
6107
6108 return 0;
6109 }
6110
6111 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
6112 {
6113 struct iwl_priv *priv = hw->priv;
6114 unsigned long flags;
6115
6116 mutex_lock(&priv->mutex);
6117 IWL_DEBUG_MAC80211("enter\n");
6118
6119 priv->lq_mngr.lq_ready = 0;
6120 #ifdef CONFIG_IWL4965_HT
6121 spin_lock_irqsave(&priv->lock, flags);
6122 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
6123 spin_unlock_irqrestore(&priv->lock, flags);
6124 #endif /* CONFIG_IWL4965_HT */
6125
6126 iwl_reset_qos(priv);
6127
6128 cancel_delayed_work(&priv->post_associate);
6129
6130 spin_lock_irqsave(&priv->lock, flags);
6131 priv->assoc_id = 0;
6132 priv->assoc_capability = 0;
6133 priv->assoc_station_added = 0;
6134
6135 /* new association get rid of ibss beacon skb */
6136 if (priv->ibss_beacon)
6137 dev_kfree_skb(priv->ibss_beacon);
6138
6139 priv->ibss_beacon = NULL;
6140
6141 priv->beacon_int = priv->hw->conf.beacon_int;
6142 priv->timestamp = 0;
6143 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
6144 priv->beacon_int = 0;
6145
6146 spin_unlock_irqrestore(&priv->lock, flags);
6147
6148 if (!iwl_is_ready_rf(priv)) {
6149 IWL_DEBUG_MAC80211("leave - not ready\n");
6150 mutex_unlock(&priv->mutex);
6151 return;
6152 }
6153
6154 /* we are restarting association process
6155 * clear RXON_FILTER_ASSOC_MSK bit
6156 */
6157 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
6158 iwl4965_scan_cancel_timeout(priv, 100);
6159 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6160 iwl4965_commit_rxon(priv);
6161 }
6162
6163 iwl_power_update_mode(priv, 0);
6164
6165 /* Per mac80211.h: This is only used in IBSS mode... */
6166 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
6167
6168 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
6169 mutex_unlock(&priv->mutex);
6170 return;
6171 }
6172
6173 iwl4965_set_rate(priv);
6174
6175 mutex_unlock(&priv->mutex);
6176
6177 IWL_DEBUG_MAC80211("leave\n");
6178 }
6179
6180 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
6181 struct ieee80211_tx_control *control)
6182 {
6183 struct iwl_priv *priv = hw->priv;
6184 unsigned long flags;
6185
6186 mutex_lock(&priv->mutex);
6187 IWL_DEBUG_MAC80211("enter\n");
6188
6189 if (!iwl_is_ready_rf(priv)) {
6190 IWL_DEBUG_MAC80211("leave - RF not ready\n");
6191 mutex_unlock(&priv->mutex);
6192 return -EIO;
6193 }
6194
6195 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
6196 IWL_DEBUG_MAC80211("leave - not IBSS\n");
6197 mutex_unlock(&priv->mutex);
6198 return -EIO;
6199 }
6200
6201 spin_lock_irqsave(&priv->lock, flags);
6202
6203 if (priv->ibss_beacon)
6204 dev_kfree_skb(priv->ibss_beacon);
6205
6206 priv->ibss_beacon = skb;
6207
6208 priv->assoc_id = 0;
6209
6210 IWL_DEBUG_MAC80211("leave\n");
6211 spin_unlock_irqrestore(&priv->lock, flags);
6212
6213 iwl_reset_qos(priv);
6214
6215 queue_work(priv->workqueue, &priv->post_associate.work);
6216
6217 mutex_unlock(&priv->mutex);
6218
6219 return 0;
6220 }
6221
6222 /*****************************************************************************
6223 *
6224 * sysfs attributes
6225 *
6226 *****************************************************************************/
6227
6228 #ifdef CONFIG_IWLWIFI_DEBUG
6229
6230 /*
6231 * The following adds a new attribute to the sysfs representation
6232 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
6233 * used for controlling the debug level.
6234 *
6235 * See the level definitions in iwl for details.
6236 */
6237
6238 static ssize_t show_debug_level(struct device_driver *d, char *buf)
6239 {
6240 return sprintf(buf, "0x%08X\n", iwl_debug_level);
6241 }
6242 static ssize_t store_debug_level(struct device_driver *d,
6243 const char *buf, size_t count)
6244 {
6245 char *p = (char *)buf;
6246 u32 val;
6247
6248 val = simple_strtoul(p, &p, 0);
6249 if (p == buf)
6250 printk(KERN_INFO DRV_NAME
6251 ": %s is not in hex or decimal form.\n", buf);
6252 else
6253 iwl_debug_level = val;
6254
6255 return strnlen(buf, count);
6256 }
6257
6258 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
6259 show_debug_level, store_debug_level);
6260
6261 #endif /* CONFIG_IWLWIFI_DEBUG */
6262
6263
6264 static ssize_t show_temperature(struct device *d,
6265 struct device_attribute *attr, char *buf)
6266 {
6267 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6268
6269 if (!iwl_is_alive(priv))
6270 return -EAGAIN;
6271
6272 return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
6273 }
6274
6275 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
6276
6277 static ssize_t show_rs_window(struct device *d,
6278 struct device_attribute *attr,
6279 char *buf)
6280 {
6281 struct iwl_priv *priv = d->driver_data;
6282 return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
6283 }
6284 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
6285
6286 static ssize_t show_tx_power(struct device *d,
6287 struct device_attribute *attr, char *buf)
6288 {
6289 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6290 return sprintf(buf, "%d\n", priv->user_txpower_limit);
6291 }
6292
6293 static ssize_t store_tx_power(struct device *d,
6294 struct device_attribute *attr,
6295 const char *buf, size_t count)
6296 {
6297 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6298 char *p = (char *)buf;
6299 u32 val;
6300
6301 val = simple_strtoul(p, &p, 10);
6302 if (p == buf)
6303 printk(KERN_INFO DRV_NAME
6304 ": %s is not in decimal form.\n", buf);
6305 else
6306 iwl4965_hw_reg_set_txpower(priv, val);
6307
6308 return count;
6309 }
6310
6311 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
6312
6313 static ssize_t show_flags(struct device *d,
6314 struct device_attribute *attr, char *buf)
6315 {
6316 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6317
6318 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
6319 }
6320
6321 static ssize_t store_flags(struct device *d,
6322 struct device_attribute *attr,
6323 const char *buf, size_t count)
6324 {
6325 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6326 u32 flags = simple_strtoul(buf, NULL, 0);
6327
6328 mutex_lock(&priv->mutex);
6329 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
6330 /* Cancel any currently running scans... */
6331 if (iwl4965_scan_cancel_timeout(priv, 100))
6332 IWL_WARNING("Could not cancel scan.\n");
6333 else {
6334 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
6335 flags);
6336 priv->staging_rxon.flags = cpu_to_le32(flags);
6337 iwl4965_commit_rxon(priv);
6338 }
6339 }
6340 mutex_unlock(&priv->mutex);
6341
6342 return count;
6343 }
6344
6345 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
6346
6347 static ssize_t show_filter_flags(struct device *d,
6348 struct device_attribute *attr, char *buf)
6349 {
6350 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6351
6352 return sprintf(buf, "0x%04X\n",
6353 le32_to_cpu(priv->active_rxon.filter_flags));
6354 }
6355
6356 static ssize_t store_filter_flags(struct device *d,
6357 struct device_attribute *attr,
6358 const char *buf, size_t count)
6359 {
6360 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6361 u32 filter_flags = simple_strtoul(buf, NULL, 0);
6362
6363 mutex_lock(&priv->mutex);
6364 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
6365 /* Cancel any currently running scans... */
6366 if (iwl4965_scan_cancel_timeout(priv, 100))
6367 IWL_WARNING("Could not cancel scan.\n");
6368 else {
6369 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
6370 "0x%04X\n", filter_flags);
6371 priv->staging_rxon.filter_flags =
6372 cpu_to_le32(filter_flags);
6373 iwl4965_commit_rxon(priv);
6374 }
6375 }
6376 mutex_unlock(&priv->mutex);
6377
6378 return count;
6379 }
6380
6381 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
6382 store_filter_flags);
6383
6384 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
6385
6386 static ssize_t show_measurement(struct device *d,
6387 struct device_attribute *attr, char *buf)
6388 {
6389 struct iwl_priv *priv = dev_get_drvdata(d);
6390 struct iwl4965_spectrum_notification measure_report;
6391 u32 size = sizeof(measure_report), len = 0, ofs = 0;
6392 u8 *data = (u8 *) & measure_report;
6393 unsigned long flags;
6394
6395 spin_lock_irqsave(&priv->lock, flags);
6396 if (!(priv->measurement_status & MEASUREMENT_READY)) {
6397 spin_unlock_irqrestore(&priv->lock, flags);
6398 return 0;
6399 }
6400 memcpy(&measure_report, &priv->measure_report, size);
6401 priv->measurement_status = 0;
6402 spin_unlock_irqrestore(&priv->lock, flags);
6403
6404 while (size && (PAGE_SIZE - len)) {
6405 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
6406 PAGE_SIZE - len, 1);
6407 len = strlen(buf);
6408 if (PAGE_SIZE - len)
6409 buf[len++] = '\n';
6410
6411 ofs += 16;
6412 size -= min(size, 16U);
6413 }
6414
6415 return len;
6416 }
6417
6418 static ssize_t store_measurement(struct device *d,
6419 struct device_attribute *attr,
6420 const char *buf, size_t count)
6421 {
6422 struct iwl_priv *priv = dev_get_drvdata(d);
6423 struct ieee80211_measurement_params params = {
6424 .channel = le16_to_cpu(priv->active_rxon.channel),
6425 .start_time = cpu_to_le64(priv->last_tsf),
6426 .duration = cpu_to_le16(1),
6427 };
6428 u8 type = IWL_MEASURE_BASIC;
6429 u8 buffer[32];
6430 u8 channel;
6431
6432 if (count) {
6433 char *p = buffer;
6434 strncpy(buffer, buf, min(sizeof(buffer), count));
6435 channel = simple_strtoul(p, NULL, 0);
6436 if (channel)
6437 params.channel = channel;
6438
6439 p = buffer;
6440 while (*p && *p != ' ')
6441 p++;
6442 if (*p)
6443 type = simple_strtoul(p + 1, NULL, 0);
6444 }
6445
6446 IWL_DEBUG_INFO("Invoking measurement of type %d on "
6447 "channel %d (for '%s')\n", type, params.channel, buf);
6448 iwl4965_get_measurement(priv, &params, type);
6449
6450 return count;
6451 }
6452
6453 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
6454 show_measurement, store_measurement);
6455 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
6456
6457 static ssize_t store_retry_rate(struct device *d,
6458 struct device_attribute *attr,
6459 const char *buf, size_t count)
6460 {
6461 struct iwl_priv *priv = dev_get_drvdata(d);
6462
6463 priv->retry_rate = simple_strtoul(buf, NULL, 0);
6464 if (priv->retry_rate <= 0)
6465 priv->retry_rate = 1;
6466
6467 return count;
6468 }
6469
6470 static ssize_t show_retry_rate(struct device *d,
6471 struct device_attribute *attr, char *buf)
6472 {
6473 struct iwl_priv *priv = dev_get_drvdata(d);
6474 return sprintf(buf, "%d", priv->retry_rate);
6475 }
6476
6477 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
6478 store_retry_rate);
6479
6480 static ssize_t store_power_level(struct device *d,
6481 struct device_attribute *attr,
6482 const char *buf, size_t count)
6483 {
6484 struct iwl_priv *priv = dev_get_drvdata(d);
6485 int rc;
6486 int mode;
6487
6488 mode = simple_strtoul(buf, NULL, 0);
6489 mutex_lock(&priv->mutex);
6490
6491 if (!iwl_is_ready(priv)) {
6492 rc = -EAGAIN;
6493 goto out;
6494 }
6495
6496 rc = iwl_power_set_user_mode(priv, mode);
6497 if (rc) {
6498 IWL_DEBUG_MAC80211("failed setting power mode.\n");
6499 goto out;
6500 }
6501 rc = count;
6502
6503 out:
6504 mutex_unlock(&priv->mutex);
6505 return rc;
6506 }
6507
6508 #define MAX_WX_STRING 80
6509
6510 /* Values are in microsecond */
6511 static const s32 timeout_duration[] = {
6512 350000,
6513 250000,
6514 75000,
6515 37000,
6516 25000,
6517 };
6518 static const s32 period_duration[] = {
6519 400000,
6520 700000,
6521 1000000,
6522 1000000,
6523 1000000
6524 };
6525
6526 static ssize_t show_power_level(struct device *d,
6527 struct device_attribute *attr, char *buf)
6528 {
6529 struct iwl_priv *priv = dev_get_drvdata(d);
6530 int level = priv->power_data.power_mode;
6531 char *p = buf;
6532
6533 p += sprintf(p, "%d ", level);
6534 switch (level) {
6535 case IWL_POWER_MODE_CAM:
6536 case IWL_POWER_AC:
6537 p += sprintf(p, "(AC)");
6538 break;
6539 case IWL_POWER_BATTERY:
6540 p += sprintf(p, "(BATTERY)");
6541 break;
6542 default:
6543 p += sprintf(p,
6544 "(Timeout %dms, Period %dms)",
6545 timeout_duration[level - 1] / 1000,
6546 period_duration[level - 1] / 1000);
6547 }
6548 /*
6549 if (!(priv->power_mode & IWL_POWER_ENABLED))
6550 p += sprintf(p, " OFF\n");
6551 else
6552 p += sprintf(p, " \n");
6553 */
6554 p += sprintf(p, " \n");
6555 return (p - buf + 1);
6556 }
6557
6558 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
6559 store_power_level);
6560
6561 static ssize_t show_channels(struct device *d,
6562 struct device_attribute *attr, char *buf)
6563 {
6564 /* all this shit doesn't belong into sysfs anyway */
6565 return 0;
6566 }
6567
6568 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
6569
6570 static ssize_t show_statistics(struct device *d,
6571 struct device_attribute *attr, char *buf)
6572 {
6573 struct iwl_priv *priv = dev_get_drvdata(d);
6574 u32 size = sizeof(struct iwl4965_notif_statistics);
6575 u32 len = 0, ofs = 0;
6576 u8 *data = (u8 *) & priv->statistics;
6577 int rc = 0;
6578
6579 if (!iwl_is_alive(priv))
6580 return -EAGAIN;
6581
6582 mutex_lock(&priv->mutex);
6583 rc = iwl_send_statistics_request(priv, 0);
6584 mutex_unlock(&priv->mutex);
6585
6586 if (rc) {
6587 len = sprintf(buf,
6588 "Error sending statistics request: 0x%08X\n", rc);
6589 return len;
6590 }
6591
6592 while (size && (PAGE_SIZE - len)) {
6593 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
6594 PAGE_SIZE - len, 1);
6595 len = strlen(buf);
6596 if (PAGE_SIZE - len)
6597 buf[len++] = '\n';
6598
6599 ofs += 16;
6600 size -= min(size, 16U);
6601 }
6602
6603 return len;
6604 }
6605
6606 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
6607
6608 static ssize_t show_status(struct device *d,
6609 struct device_attribute *attr, char *buf)
6610 {
6611 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6612 if (!iwl_is_alive(priv))
6613 return -EAGAIN;
6614 return sprintf(buf, "0x%08x\n", (int)priv->status);
6615 }
6616
6617 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
6618
6619 static ssize_t dump_error_log(struct device *d,
6620 struct device_attribute *attr,
6621 const char *buf, size_t count)
6622 {
6623 char *p = (char *)buf;
6624
6625 if (p[0] == '1')
6626 iwl4965_dump_nic_error_log((struct iwl_priv *)d->driver_data);
6627
6628 return strnlen(buf, count);
6629 }
6630
6631 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
6632
6633 static ssize_t dump_event_log(struct device *d,
6634 struct device_attribute *attr,
6635 const char *buf, size_t count)
6636 {
6637 char *p = (char *)buf;
6638
6639 if (p[0] == '1')
6640 iwl4965_dump_nic_event_log((struct iwl_priv *)d->driver_data);
6641
6642 return strnlen(buf, count);
6643 }
6644
6645 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
6646
6647 /*****************************************************************************
6648 *
6649 * driver setup and teardown
6650 *
6651 *****************************************************************************/
6652
6653 static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
6654 {
6655 priv->workqueue = create_workqueue(DRV_NAME);
6656
6657 init_waitqueue_head(&priv->wait_command_queue);
6658
6659 INIT_WORK(&priv->up, iwl4965_bg_up);
6660 INIT_WORK(&priv->restart, iwl4965_bg_restart);
6661 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
6662 INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
6663 INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
6664 INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
6665 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
6666 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
6667 INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
6668 INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
6669 INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
6670 INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
6671
6672 iwl4965_hw_setup_deferred_work(priv);
6673
6674 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
6675 iwl4965_irq_tasklet, (unsigned long)priv);
6676 }
6677
6678 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
6679 {
6680 iwl4965_hw_cancel_deferred_work(priv);
6681
6682 cancel_delayed_work_sync(&priv->init_alive_start);
6683 cancel_delayed_work(&priv->scan_check);
6684 cancel_delayed_work(&priv->alive_start);
6685 cancel_delayed_work(&priv->post_associate);
6686 cancel_work_sync(&priv->beacon_update);
6687 }
6688
6689 static struct attribute *iwl4965_sysfs_entries[] = {
6690 &dev_attr_channels.attr,
6691 &dev_attr_dump_errors.attr,
6692 &dev_attr_dump_events.attr,
6693 &dev_attr_flags.attr,
6694 &dev_attr_filter_flags.attr,
6695 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
6696 &dev_attr_measurement.attr,
6697 #endif
6698 &dev_attr_power_level.attr,
6699 &dev_attr_retry_rate.attr,
6700 &dev_attr_rs_window.attr,
6701 &dev_attr_statistics.attr,
6702 &dev_attr_status.attr,
6703 &dev_attr_temperature.attr,
6704 &dev_attr_tx_power.attr,
6705
6706 NULL
6707 };
6708
6709 static struct attribute_group iwl4965_attribute_group = {
6710 .name = NULL, /* put in device directory */
6711 .attrs = iwl4965_sysfs_entries,
6712 };
6713
6714 static struct ieee80211_ops iwl4965_hw_ops = {
6715 .tx = iwl4965_mac_tx,
6716 .start = iwl4965_mac_start,
6717 .stop = iwl4965_mac_stop,
6718 .add_interface = iwl4965_mac_add_interface,
6719 .remove_interface = iwl4965_mac_remove_interface,
6720 .config = iwl4965_mac_config,
6721 .config_interface = iwl4965_mac_config_interface,
6722 .configure_filter = iwl4965_configure_filter,
6723 .set_key = iwl4965_mac_set_key,
6724 .update_tkip_key = iwl4965_mac_update_tkip_key,
6725 .get_stats = iwl4965_mac_get_stats,
6726 .get_tx_stats = iwl4965_mac_get_tx_stats,
6727 .conf_tx = iwl4965_mac_conf_tx,
6728 .get_tsf = iwl4965_mac_get_tsf,
6729 .reset_tsf = iwl4965_mac_reset_tsf,
6730 .beacon_update = iwl4965_mac_beacon_update,
6731 .bss_info_changed = iwl4965_bss_info_changed,
6732 #ifdef CONFIG_IWL4965_HT
6733 .ampdu_action = iwl4965_mac_ampdu_action,
6734 #endif /* CONFIG_IWL4965_HT */
6735 .hw_scan = iwl4965_mac_hw_scan
6736 };
6737
6738 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
6739 {
6740 int err = 0;
6741 struct iwl_priv *priv;
6742 struct ieee80211_hw *hw;
6743 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
6744 unsigned long flags;
6745 DECLARE_MAC_BUF(mac);
6746
6747 /************************
6748 * 1. Allocating HW data
6749 ************************/
6750
6751 /* Disabling hardware scan means that mac80211 will perform scans
6752 * "the hard way", rather than using device's scan. */
6753 if (cfg->mod_params->disable_hw_scan) {
6754 IWL_DEBUG_INFO("Disabling hw_scan\n");
6755 iwl4965_hw_ops.hw_scan = NULL;
6756 }
6757
6758 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
6759 if (!hw) {
6760 err = -ENOMEM;
6761 goto out;
6762 }
6763 priv = hw->priv;
6764 /* At this point both hw and priv are allocated. */
6765
6766 SET_IEEE80211_DEV(hw, &pdev->dev);
6767
6768 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
6769 priv->cfg = cfg;
6770 priv->pci_dev = pdev;
6771
6772 #ifdef CONFIG_IWLWIFI_DEBUG
6773 iwl_debug_level = priv->cfg->mod_params->debug;
6774 atomic_set(&priv->restrict_refcnt, 0);
6775 #endif
6776
6777 /**************************
6778 * 2. Initializing PCI bus
6779 **************************/
6780 if (pci_enable_device(pdev)) {
6781 err = -ENODEV;
6782 goto out_ieee80211_free_hw;
6783 }
6784
6785 pci_set_master(pdev);
6786
6787 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
6788 if (!err)
6789 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
6790 if (err) {
6791 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
6792 if (!err)
6793 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
6794 /* both attempts failed: */
6795 if (err) {
6796 printk(KERN_WARNING "%s: No suitable DMA available.\n",
6797 DRV_NAME);
6798 goto out_pci_disable_device;
6799 }
6800 }
6801
6802 err = pci_request_regions(pdev, DRV_NAME);
6803 if (err)
6804 goto out_pci_disable_device;
6805
6806 pci_set_drvdata(pdev, priv);
6807
6808 /* We disable the RETRY_TIMEOUT register (0x41) to keep
6809 * PCI Tx retries from interfering with C3 CPU state */
6810 pci_write_config_byte(pdev, 0x41, 0x00);
6811
6812 /***********************
6813 * 3. Read REV register
6814 ***********************/
6815 priv->hw_base = pci_iomap(pdev, 0, 0);
6816 if (!priv->hw_base) {
6817 err = -ENODEV;
6818 goto out_pci_release_regions;
6819 }
6820
6821 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
6822 (unsigned long long) pci_resource_len(pdev, 0));
6823 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
6824
6825 iwl_hw_detect(priv);
6826 printk(KERN_INFO DRV_NAME
6827 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
6828 priv->cfg->name, priv->hw_rev);
6829
6830 /* amp init */
6831 err = priv->cfg->ops->lib->apm_ops.init(priv);
6832 if (err < 0) {
6833 IWL_DEBUG_INFO("Failed to init APMG\n");
6834 goto out_iounmap;
6835 }
6836 /*****************
6837 * 4. Read EEPROM
6838 *****************/
6839 /* Read the EEPROM */
6840 err = iwl_eeprom_init(priv);
6841 if (err) {
6842 IWL_ERROR("Unable to init EEPROM\n");
6843 goto out_iounmap;
6844 }
6845 err = iwl_eeprom_check_version(priv);
6846 if (err)
6847 goto out_iounmap;
6848
6849 /* MAC Address location in EEPROM same for 3945/4965 */
6850 iwl_eeprom_get_mac(priv, priv->mac_addr);
6851 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
6852 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
6853
6854 /************************
6855 * 5. Setup HW constants
6856 ************************/
6857 /* Device-specific setup */
6858 if (priv->cfg->ops->lib->set_hw_params(priv)) {
6859 IWL_ERROR("failed to set hw parameters\n");
6860 goto out_free_eeprom;
6861 }
6862
6863 /*******************
6864 * 6. Setup hw/priv
6865 *******************/
6866
6867 err = iwl_setup(priv);
6868 if (err)
6869 goto out_free_eeprom;
6870 /* At this point both hw and priv are initialized. */
6871
6872 /**********************************
6873 * 7. Initialize module parameters
6874 **********************************/
6875
6876 /* Disable radio (SW RF KILL) via parameter when loading driver */
6877 if (priv->cfg->mod_params->disable) {
6878 set_bit(STATUS_RF_KILL_SW, &priv->status);
6879 IWL_DEBUG_INFO("Radio disabled.\n");
6880 }
6881
6882 if (priv->cfg->mod_params->enable_qos)
6883 priv->qos_data.qos_enable = 1;
6884
6885 /********************
6886 * 8. Setup services
6887 ********************/
6888 spin_lock_irqsave(&priv->lock, flags);
6889 iwl4965_disable_interrupts(priv);
6890 spin_unlock_irqrestore(&priv->lock, flags);
6891
6892 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
6893 if (err) {
6894 IWL_ERROR("failed to create sysfs device attributes\n");
6895 goto out_free_eeprom;
6896 }
6897
6898 err = iwl_dbgfs_register(priv, DRV_NAME);
6899 if (err) {
6900 IWL_ERROR("failed to create debugfs files\n");
6901 goto out_remove_sysfs;
6902 }
6903
6904 iwl4965_setup_deferred_work(priv);
6905 iwl4965_setup_rx_handlers(priv);
6906
6907 /********************
6908 * 9. Conclude
6909 ********************/
6910 pci_save_state(pdev);
6911 pci_disable_device(pdev);
6912
6913 /* notify iwlcore to init */
6914 iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
6915 return 0;
6916
6917 out_remove_sysfs:
6918 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
6919 out_free_eeprom:
6920 iwl_eeprom_free(priv);
6921 out_iounmap:
6922 pci_iounmap(pdev, priv->hw_base);
6923 out_pci_release_regions:
6924 pci_release_regions(pdev);
6925 pci_set_drvdata(pdev, NULL);
6926 out_pci_disable_device:
6927 pci_disable_device(pdev);
6928 out_ieee80211_free_hw:
6929 ieee80211_free_hw(priv->hw);
6930 out:
6931 return err;
6932 }
6933
6934 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
6935 {
6936 struct iwl_priv *priv = pci_get_drvdata(pdev);
6937 struct list_head *p, *q;
6938 int i;
6939 unsigned long flags;
6940
6941 if (!priv)
6942 return;
6943
6944 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
6945
6946 if (priv->mac80211_registered) {
6947 ieee80211_unregister_hw(priv->hw);
6948 priv->mac80211_registered = 0;
6949 }
6950
6951 set_bit(STATUS_EXIT_PENDING, &priv->status);
6952
6953 iwl4965_down(priv);
6954
6955 /* make sure we flush any pending irq or
6956 * tasklet for the driver
6957 */
6958 spin_lock_irqsave(&priv->lock, flags);
6959 iwl4965_disable_interrupts(priv);
6960 spin_unlock_irqrestore(&priv->lock, flags);
6961
6962 iwl_synchronize_irq(priv);
6963
6964 /* Free MAC hash list for ADHOC */
6965 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
6966 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
6967 list_del(p);
6968 kfree(list_entry(p, struct iwl4965_ibss_seq, list));
6969 }
6970 }
6971
6972 iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT);
6973 iwl_dbgfs_unregister(priv);
6974 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
6975
6976 iwl4965_dealloc_ucode_pci(priv);
6977
6978 if (priv->rxq.bd)
6979 iwl_rx_queue_free(priv, &priv->rxq);
6980 iwl4965_hw_txq_ctx_free(priv);
6981
6982 iwlcore_clear_stations_table(priv);
6983 iwl_eeprom_free(priv);
6984
6985
6986 /*netif_stop_queue(dev); */
6987 flush_workqueue(priv->workqueue);
6988
6989 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
6990 * priv->workqueue... so we can't take down the workqueue
6991 * until now... */
6992 destroy_workqueue(priv->workqueue);
6993 priv->workqueue = NULL;
6994
6995 pci_iounmap(pdev, priv->hw_base);
6996 pci_release_regions(pdev);
6997 pci_disable_device(pdev);
6998 pci_set_drvdata(pdev, NULL);
6999
7000 iwl_free_channel_map(priv);
7001 iwlcore_free_geos(priv);
7002
7003 if (priv->ibss_beacon)
7004 dev_kfree_skb(priv->ibss_beacon);
7005
7006 ieee80211_free_hw(priv->hw);
7007 }
7008
7009 #ifdef CONFIG_PM
7010
7011 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
7012 {
7013 struct iwl_priv *priv = pci_get_drvdata(pdev);
7014
7015 if (priv->is_open) {
7016 set_bit(STATUS_IN_SUSPEND, &priv->status);
7017 iwl4965_mac_stop(priv->hw);
7018 priv->is_open = 1;
7019 }
7020
7021 pci_set_power_state(pdev, PCI_D3hot);
7022
7023 return 0;
7024 }
7025
7026 static int iwl4965_pci_resume(struct pci_dev *pdev)
7027 {
7028 struct iwl_priv *priv = pci_get_drvdata(pdev);
7029
7030 pci_set_power_state(pdev, PCI_D0);
7031
7032 if (priv->is_open)
7033 iwl4965_mac_start(priv->hw);
7034
7035 clear_bit(STATUS_IN_SUSPEND, &priv->status);
7036 return 0;
7037 }
7038
7039 #endif /* CONFIG_PM */
7040
7041 /*****************************************************************************
7042 *
7043 * driver and module entry point
7044 *
7045 *****************************************************************************/
7046
7047 /* Hardware specific file defines the PCI IDs table for that hardware module */
7048 static struct pci_device_id iwl_hw_card_ids[] = {
7049 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
7050 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
7051 #ifdef CONFIG_IWL5000
7052 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
7053 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
7054 {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
7055 #endif /* CONFIG_IWL5000 */
7056 {0}
7057 };
7058 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
7059
7060 static struct pci_driver iwl_driver = {
7061 .name = DRV_NAME,
7062 .id_table = iwl_hw_card_ids,
7063 .probe = iwl4965_pci_probe,
7064 .remove = __devexit_p(iwl4965_pci_remove),
7065 #ifdef CONFIG_PM
7066 .suspend = iwl4965_pci_suspend,
7067 .resume = iwl4965_pci_resume,
7068 #endif
7069 };
7070
7071 static int __init iwl4965_init(void)
7072 {
7073
7074 int ret;
7075 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
7076 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
7077
7078 ret = iwl4965_rate_control_register();
7079 if (ret) {
7080 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
7081 return ret;
7082 }
7083
7084 ret = pci_register_driver(&iwl_driver);
7085 if (ret) {
7086 IWL_ERROR("Unable to initialize PCI module\n");
7087 goto error_register;
7088 }
7089 #ifdef CONFIG_IWLWIFI_DEBUG
7090 ret = driver_create_file(&iwl_driver.driver, &driver_attr_debug_level);
7091 if (ret) {
7092 IWL_ERROR("Unable to create driver sysfs file\n");
7093 goto error_debug;
7094 }
7095 #endif
7096
7097 return ret;
7098
7099 #ifdef CONFIG_IWLWIFI_DEBUG
7100 error_debug:
7101 pci_unregister_driver(&iwl_driver);
7102 #endif
7103 error_register:
7104 iwl4965_rate_control_unregister();
7105 return ret;
7106 }
7107
7108 static void __exit iwl4965_exit(void)
7109 {
7110 #ifdef CONFIG_IWLWIFI_DEBUG
7111 driver_remove_file(&iwl_driver.driver, &driver_attr_debug_level);
7112 #endif
7113 pci_unregister_driver(&iwl_driver);
7114 iwl4965_rate_control_unregister();
7115 }
7116
7117 module_exit(iwl4965_exit);
7118 module_init(iwl4965_init);
Linux kernel - Deliverables
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