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iwlwifi: Fix TKIP update key and get_free_ucode_key
[linux-2.6/sactl.git] / drivers / net / wireless / iwlwifi / iwl4965-base.c
blob0eb4220f035ffb7f881aa60a753fb7168fd982f8
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-4965.h"
50 #include "iwl-core.h"
51 #include "iwl-io.h"
52 #include "iwl-helpers.h"
53 #include "iwl-sta.h"
54
55 static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv,
56 struct iwl4965_tx_queue *txq);
57
58 /******************************************************************************
59 *
60 * module boiler plate
61 *
62 ******************************************************************************/
63
64 /*
65 * module name, copyright, version, etc.
66 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
67 */
68
69 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
70
71 #ifdef CONFIG_IWLWIFI_DEBUG
72 #define VD "d"
73 #else
74 #define VD
75 #endif
76
77 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
78 #define VS "s"
79 #else
80 #define VS
81 #endif
82
83 #define DRV_VERSION IWLWIFI_VERSION VD VS
84
85
86 MODULE_DESCRIPTION(DRV_DESCRIPTION);
87 MODULE_VERSION(DRV_VERSION);
88 MODULE_AUTHOR(DRV_COPYRIGHT);
89 MODULE_LICENSE("GPL");
90
91 __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
92 {
93 u16 fc = le16_to_cpu(hdr->frame_control);
94 int hdr_len = ieee80211_get_hdrlen(fc);
95
96 if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
97 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
98 return NULL;
99 }
100
101 static const struct ieee80211_supported_band *iwl4965_get_hw_mode(
102 struct iwl_priv *priv, enum ieee80211_band band)
103 {
104 return priv->hw->wiphy->bands[band];
105 }
106
107 static int iwl4965_is_empty_essid(const char *essid, int essid_len)
108 {
109 /* Single white space is for Linksys APs */
110 if (essid_len == 1 && essid[0] == ' ')
111 return 1;
112
113 /* Otherwise, if the entire essid is 0, we assume it is hidden */
114 while (essid_len) {
115 essid_len--;
116 if (essid[essid_len] != '\0')
117 return 0;
118 }
119
120 return 1;
121 }
122
123 static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
124 {
125 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
126 const char *s = essid;
127 char *d = escaped;
128
129 if (iwl4965_is_empty_essid(essid, essid_len)) {
130 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
131 return escaped;
132 }
133
134 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
135 while (essid_len--) {
136 if (*s == '\0') {
137 *d++ = '\\';
138 *d++ = '0';
139 s++;
140 } else
141 *d++ = *s++;
142 }
143 *d = '\0';
144 return escaped;
145 }
146
147 /*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
148 * DMA services
149 *
150 * Theory of operation
151 *
152 * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
153 * of buffer descriptors, each of which points to one or more data buffers for
154 * the device to read from or fill. Driver and device exchange status of each
155 * queue via "read" and "write" pointers. Driver keeps minimum of 2 empty
156 * entries in each circular buffer, to protect against confusing empty and full
157 * queue states.
158 *
159 * The device reads or writes the data in the queues via the device's several
160 * DMA/FIFO channels. Each queue is mapped to a single DMA channel.
161 *
162 * For Tx queue, there are low mark and high mark limits. If, after queuing
163 * the packet for Tx, free space become < low mark, Tx queue stopped. When
164 * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
165 * Tx queue resumed.
166 *
167 * The 4965 operates with up to 17 queues: One receive queue, one transmit
168 * queue (#4) for sending commands to the device firmware, and 15 other
169 * Tx queues that may be mapped to prioritized Tx DMA/FIFO channels.
170 *
171 * See more detailed info in iwl-4965-hw.h.
172 ***************************************************/
173
174 int iwl4965_queue_space(const struct iwl4965_queue *q)
175 {
176 int s = q->read_ptr - q->write_ptr;
177
178 if (q->read_ptr > q->write_ptr)
179 s -= q->n_bd;
180
181 if (s <= 0)
182 s += q->n_window;
183 /* keep some reserve to not confuse empty and full situations */
184 s -= 2;
185 if (s < 0)
186 s = 0;
187 return s;
188 }
189
190
191 static inline int x2_queue_used(const struct iwl4965_queue *q, int i)
192 {
193 return q->write_ptr > q->read_ptr ?
194 (i >= q->read_ptr && i < q->write_ptr) :
195 !(i < q->read_ptr && i >= q->write_ptr);
196 }
197
198 static inline u8 get_cmd_index(struct iwl4965_queue *q, u32 index, int is_huge)
199 {
200 /* This is for scan command, the big buffer at end of command array */
201 if (is_huge)
202 return q->n_window; /* must be power of 2 */
203
204 /* Otherwise, use normal size buffers */
205 return index & (q->n_window - 1);
206 }
207
208 /**
209 * iwl4965_queue_init - Initialize queue's high/low-water and read/write indexes
210 */
211 static int iwl4965_queue_init(struct iwl_priv *priv, struct iwl4965_queue *q,
212 int count, int slots_num, u32 id)
213 {
214 q->n_bd = count;
215 q->n_window = slots_num;
216 q->id = id;
217
218 /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
219 * and iwl_queue_dec_wrap are broken. */
220 BUG_ON(!is_power_of_2(count));
221
222 /* slots_num must be power-of-two size, otherwise
223 * get_cmd_index is broken. */
224 BUG_ON(!is_power_of_2(slots_num));
225
226 q->low_mark = q->n_window / 4;
227 if (q->low_mark < 4)
228 q->low_mark = 4;
229
230 q->high_mark = q->n_window / 8;
231 if (q->high_mark < 2)
232 q->high_mark = 2;
233
234 q->write_ptr = q->read_ptr = 0;
235
236 return 0;
237 }
238
239 /**
240 * iwl4965_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
241 */
242 static int iwl4965_tx_queue_alloc(struct iwl_priv *priv,
243 struct iwl4965_tx_queue *txq, u32 id)
244 {
245 struct pci_dev *dev = priv->pci_dev;
246
247 /* Driver private data, only for Tx (not command) queues,
248 * not shared with device. */
249 if (id != IWL_CMD_QUEUE_NUM) {
250 txq->txb = kmalloc(sizeof(txq->txb[0]) *
251 TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
252 if (!txq->txb) {
253 IWL_ERROR("kmalloc for auxiliary BD "
254 "structures failed\n");
255 goto error;
256 }
257 } else
258 txq->txb = NULL;
259
260 /* Circular buffer of transmit frame descriptors (TFDs),
261 * shared with device */
262 txq->bd = pci_alloc_consistent(dev,
263 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
264 &txq->q.dma_addr);
265
266 if (!txq->bd) {
267 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
268 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
269 goto error;
270 }
271 txq->q.id = id;
272
273 return 0;
274
275 error:
276 if (txq->txb) {
277 kfree(txq->txb);
278 txq->txb = NULL;
279 }
280
281 return -ENOMEM;
282 }
283
284 /**
285 * iwl4965_tx_queue_init - Allocate and initialize one tx/cmd queue
286 */
287 int iwl4965_tx_queue_init(struct iwl_priv *priv,
288 struct iwl4965_tx_queue *txq, int slots_num, u32 txq_id)
289 {
290 struct pci_dev *dev = priv->pci_dev;
291 int len;
292 int rc = 0;
293
294 /*
295 * Alloc buffer array for commands (Tx or other types of commands).
296 * For the command queue (#4), allocate command space + one big
297 * command for scan, since scan command is very huge; the system will
298 * not have two scans at the same time, so only one is needed.
299 * For normal Tx queues (all other queues), no super-size command
300 * space is needed.
301 */
302 len = sizeof(struct iwl_cmd) * slots_num;
303 if (txq_id == IWL_CMD_QUEUE_NUM)
304 len += IWL_MAX_SCAN_SIZE;
305 txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
306 if (!txq->cmd)
307 return -ENOMEM;
308
309 /* Alloc driver data array and TFD circular buffer */
310 rc = iwl4965_tx_queue_alloc(priv, txq, txq_id);
311 if (rc) {
312 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
313
314 return -ENOMEM;
315 }
316 txq->need_update = 0;
317
318 /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
319 * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
320 BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
321
322 /* Initialize queue's high/low-water marks, and head/tail indexes */
323 iwl4965_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
324
325 /* Tell device where to find queue */
326 iwl4965_hw_tx_queue_init(priv, txq);
327
328 return 0;
329 }
330
331 /**
332 * iwl4965_tx_queue_free - Deallocate DMA queue.
333 * @txq: Transmit queue to deallocate.
334 *
335 * Empty queue by removing and destroying all BD's.
336 * Free all buffers.
337 * 0-fill, but do not free "txq" descriptor structure.
338 */
339 void iwl4965_tx_queue_free(struct iwl_priv *priv, struct iwl4965_tx_queue *txq)
340 {
341 struct iwl4965_queue *q = &txq->q;
342 struct pci_dev *dev = priv->pci_dev;
343 int len;
344
345 if (q->n_bd == 0)
346 return;
347
348 /* first, empty all BD's */
349 for (; q->write_ptr != q->read_ptr;
350 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd))
351 iwl4965_hw_txq_free_tfd(priv, txq);
352
353 len = sizeof(struct iwl_cmd) * q->n_window;
354 if (q->id == IWL_CMD_QUEUE_NUM)
355 len += IWL_MAX_SCAN_SIZE;
356
357 /* De-alloc array of command/tx buffers */
358 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
359
360 /* De-alloc circular buffer of TFDs */
361 if (txq->q.n_bd)
362 pci_free_consistent(dev, sizeof(struct iwl4965_tfd_frame) *
363 txq->q.n_bd, txq->bd, txq->q.dma_addr);
364
365 /* De-alloc array of per-TFD driver data */
366 if (txq->txb) {
367 kfree(txq->txb);
368 txq->txb = NULL;
369 }
370
371 /* 0-fill queue descriptor structure */
372 memset(txq, 0, sizeof(*txq));
373 }
374
375 const u8 iwl4965_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
376
377 /*************** STATION TABLE MANAGEMENT ****
378 * mac80211 should be examined to determine if sta_info is duplicating
379 * the functionality provided here
380 */
381
382 /**************************************************************/
383
384 #if 0 /* temporary disable till we add real remove station */
385 /**
386 * iwl4965_remove_station - Remove driver's knowledge of station.
387 *
388 * NOTE: This does not remove station from device's station table.
389 */
390 static u8 iwl4965_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
391 {
392 int index = IWL_INVALID_STATION;
393 int i;
394 unsigned long flags;
395
396 spin_lock_irqsave(&priv->sta_lock, flags);
397
398 if (is_ap)
399 index = IWL_AP_ID;
400 else if (is_broadcast_ether_addr(addr))
401 index = priv->hw_params.bcast_sta_id;
402 else
403 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
404 if (priv->stations[i].used &&
405 !compare_ether_addr(priv->stations[i].sta.sta.addr,
406 addr)) {
407 index = i;
408 break;
409 }
410
411 if (unlikely(index == IWL_INVALID_STATION))
412 goto out;
413
414 if (priv->stations[index].used) {
415 priv->stations[index].used = 0;
416 priv->num_stations--;
417 }
418
419 BUG_ON(priv->num_stations < 0);
420
421 out:
422 spin_unlock_irqrestore(&priv->sta_lock, flags);
423 return 0;
424 }
425 #endif
426
427 /**
428 * iwl4965_add_station_flags - Add station to tables in driver and device
429 */
430 u8 iwl4965_add_station_flags(struct iwl_priv *priv, const u8 *addr,
431 int is_ap, u8 flags, void *ht_data)
432 {
433 int i;
434 int index = IWL_INVALID_STATION;
435 struct iwl4965_station_entry *station;
436 unsigned long flags_spin;
437 DECLARE_MAC_BUF(mac);
438
439 spin_lock_irqsave(&priv->sta_lock, flags_spin);
440 if (is_ap)
441 index = IWL_AP_ID;
442 else if (is_broadcast_ether_addr(addr))
443 index = priv->hw_params.bcast_sta_id;
444 else
445 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
446 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
447 addr)) {
448 index = i;
449 break;
450 }
451
452 if (!priv->stations[i].used &&
453 index == IWL_INVALID_STATION)
454 index = i;
455 }
456
457
458 /* These two conditions have the same outcome, but keep them separate
459 since they have different meanings */
460 if (unlikely(index == IWL_INVALID_STATION)) {
461 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
462 return index;
463 }
464
465 if (priv->stations[index].used &&
466 !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
467 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
468 return index;
469 }
470
471
472 IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
473 station = &priv->stations[index];
474 station->used = 1;
475 priv->num_stations++;
476
477 /* Set up the REPLY_ADD_STA command to send to device */
478 memset(&station->sta, 0, sizeof(struct iwl4965_addsta_cmd));
479 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
480 station->sta.mode = 0;
481 station->sta.sta.sta_id = index;
482 station->sta.station_flags = 0;
483
484 #ifdef CONFIG_IWL4965_HT
485 /* BCAST station and IBSS stations do not work in HT mode */
486 if (index != priv->hw_params.bcast_sta_id &&
487 priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
488 iwl4965_set_ht_add_station(priv, index,
489 (struct ieee80211_ht_info *) ht_data);
490 #endif /*CONFIG_IWL4965_HT*/
491
492 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
493
494 /* Add station to device's station table */
495 iwl4965_send_add_station(priv, &station->sta, flags);
496 return index;
497
498 }
499
500
501
502 /*************** HOST COMMAND QUEUE FUNCTIONS *****/
503
504 /**
505 * iwl4965_enqueue_hcmd - enqueue a uCode command
506 * @priv: device private data point
507 * @cmd: a point to the ucode command structure
508 *
509 * The function returns < 0 values to indicate the operation is
510 * failed. On success, it turns the index (> 0) of command in the
511 * command queue.
512 */
513 int iwl4965_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
514 {
515 struct iwl4965_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
516 struct iwl4965_queue *q = &txq->q;
517 struct iwl4965_tfd_frame *tfd;
518 u32 *control_flags;
519 struct iwl_cmd *out_cmd;
520 u32 idx;
521 u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
522 dma_addr_t phys_addr;
523 int ret;
524 unsigned long flags;
525
526 /* If any of the command structures end up being larger than
527 * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
528 * we will need to increase the size of the TFD entries */
529 BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
530 !(cmd->meta.flags & CMD_SIZE_HUGE));
531
532 if (iwl_is_rfkill(priv)) {
533 IWL_DEBUG_INFO("Not sending command - RF KILL");
534 return -EIO;
535 }
536
537 if (iwl4965_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
538 IWL_ERROR("No space for Tx\n");
539 return -ENOSPC;
540 }
541
542 spin_lock_irqsave(&priv->hcmd_lock, flags);
543
544 tfd = &txq->bd[q->write_ptr];
545 memset(tfd, 0, sizeof(*tfd));
546
547 control_flags = (u32 *) tfd;
548
549 idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
550 out_cmd = &txq->cmd[idx];
551
552 out_cmd->hdr.cmd = cmd->id;
553 memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
554 memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
555
556 /* At this point, the out_cmd now has all of the incoming cmd
557 * information */
558
559 out_cmd->hdr.flags = 0;
560 out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
561 INDEX_TO_SEQ(q->write_ptr));
562 if (out_cmd->meta.flags & CMD_SIZE_HUGE)
563 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
564
565 phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
566 offsetof(struct iwl_cmd, hdr);
567 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
568
569 IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
570 "%d bytes at %d[%d]:%d\n",
571 get_cmd_string(out_cmd->hdr.cmd),
572 out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
573 fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
574
575 txq->need_update = 1;
576
577 /* Set up entry in queue's byte count circular buffer */
578 priv->cfg->ops->lib->txq_update_byte_cnt_tbl(priv, txq, 0);
579
580 /* Increment and update queue's write index */
581 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
582 ret = iwl4965_tx_queue_update_write_ptr(priv, txq);
583
584 spin_unlock_irqrestore(&priv->hcmd_lock, flags);
585 return ret ? ret : idx;
586 }
587
588 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
589 {
590 struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
591
592 if (hw_decrypt)
593 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
594 else
595 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
596
597 }
598
599 /**
600 * iwl4965_rxon_add_station - add station into station table.
601 *
602 * there is only one AP station with id= IWL_AP_ID
603 * NOTE: mutex must be held before calling this fnction
604 */
605 static int iwl4965_rxon_add_station(struct iwl_priv *priv,
606 const u8 *addr, int is_ap)
607 {
608 u8 sta_id;
609
610 /* Add station to device's station table */
611 #ifdef CONFIG_IWL4965_HT
612 struct ieee80211_conf *conf = &priv->hw->conf;
613 struct ieee80211_ht_info *cur_ht_config = &conf->ht_conf;
614
615 if ((is_ap) &&
616 (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) &&
617 (priv->iw_mode == IEEE80211_IF_TYPE_STA))
618 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
619 0, cur_ht_config);
620 else
621 #endif /* CONFIG_IWL4965_HT */
622 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
623 0, NULL);
624
625 /* Set up default rate scaling table in device's station table */
626 iwl4965_add_station(priv, addr, is_ap);
627
628 return sta_id;
629 }
630
631 /**
632 * iwl4965_check_rxon_cmd - validate RXON structure is valid
633 *
634 * NOTE: This is really only useful during development and can eventually
635 * be #ifdef'd out once the driver is stable and folks aren't actively
636 * making changes
637 */
638 static int iwl4965_check_rxon_cmd(struct iwl4965_rxon_cmd *rxon)
639 {
640 int error = 0;
641 int counter = 1;
642
643 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
644 error |= le32_to_cpu(rxon->flags &
645 (RXON_FLG_TGJ_NARROW_BAND_MSK |
646 RXON_FLG_RADAR_DETECT_MSK));
647 if (error)
648 IWL_WARNING("check 24G fields %d | %d\n",
649 counter++, error);
650 } else {
651 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
652 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
653 if (error)
654 IWL_WARNING("check 52 fields %d | %d\n",
655 counter++, error);
656 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
657 if (error)
658 IWL_WARNING("check 52 CCK %d | %d\n",
659 counter++, error);
660 }
661 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
662 if (error)
663 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
664
665 /* make sure basic rates 6Mbps and 1Mbps are supported */
666 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
667 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
668 if (error)
669 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
670
671 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
672 if (error)
673 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
674
675 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
676 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
677 if (error)
678 IWL_WARNING("check CCK and short slot %d | %d\n",
679 counter++, error);
680
681 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
682 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
683 if (error)
684 IWL_WARNING("check CCK & auto detect %d | %d\n",
685 counter++, error);
686
687 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
688 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
689 if (error)
690 IWL_WARNING("check TGG and auto detect %d | %d\n",
691 counter++, error);
692
693 if (error)
694 IWL_WARNING("Tuning to channel %d\n",
695 le16_to_cpu(rxon->channel));
696
697 if (error) {
698 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
699 return -1;
700 }
701 return 0;
702 }
703
704 /**
705 * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
706 * @priv: staging_rxon is compared to active_rxon
707 *
708 * If the RXON structure is changing enough to require a new tune,
709 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
710 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
711 */
712 static int iwl4965_full_rxon_required(struct iwl_priv *priv)
713 {
714
715 /* These items are only settable from the full RXON command */
716 if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
717 compare_ether_addr(priv->staging_rxon.bssid_addr,
718 priv->active_rxon.bssid_addr) ||
719 compare_ether_addr(priv->staging_rxon.node_addr,
720 priv->active_rxon.node_addr) ||
721 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
722 priv->active_rxon.wlap_bssid_addr) ||
723 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
724 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
725 (priv->staging_rxon.air_propagation !=
726 priv->active_rxon.air_propagation) ||
727 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
728 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
729 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
730 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
731 (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
732 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
733 return 1;
734
735 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
736 * be updated with the RXON_ASSOC command -- however only some
737 * flag transitions are allowed using RXON_ASSOC */
738
739 /* Check if we are not switching bands */
740 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
741 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
742 return 1;
743
744 /* Check if we are switching association toggle */
745 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
746 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
747 return 1;
748
749 return 0;
750 }
751
752 /**
753 * iwl4965_commit_rxon - commit staging_rxon to hardware
754 *
755 * The RXON command in staging_rxon is committed to the hardware and
756 * the active_rxon structure is updated with the new data. This
757 * function correctly transitions out of the RXON_ASSOC_MSK state if
758 * a HW tune is required based on the RXON structure changes.
759 */
760 static int iwl4965_commit_rxon(struct iwl_priv *priv)
761 {
762 /* cast away the const for active_rxon in this function */
763 struct iwl4965_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
764 DECLARE_MAC_BUF(mac);
765 int rc = 0;
766
767 if (!iwl_is_alive(priv))
768 return -1;
769
770 /* always get timestamp with Rx frame */
771 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
772
773 rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
774 if (rc) {
775 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
776 return -EINVAL;
777 }
778
779 /* If we don't need to send a full RXON, we can use
780 * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
781 * and other flags for the current radio configuration. */
782 if (!iwl4965_full_rxon_required(priv)) {
783 rc = iwl_send_rxon_assoc(priv);
784 if (rc) {
785 IWL_ERROR("Error setting RXON_ASSOC "
786 "configuration (%d).\n", rc);
787 return rc;
788 }
789
790 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
791
792 return 0;
793 }
794
795 /* station table will be cleared */
796 priv->assoc_station_added = 0;
797
798 #ifdef CONFIG_IWL4965_SENSITIVITY
799 priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
800 if (!priv->error_recovering)
801 priv->start_calib = 0;
802
803 iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
804 #endif /* CONFIG_IWL4965_SENSITIVITY */
805
806 /* If we are currently associated and the new config requires
807 * an RXON_ASSOC and the new config wants the associated mask enabled,
808 * we must clear the associated from the active configuration
809 * before we apply the new config */
810 if (iwl_is_associated(priv) &&
811 (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
812 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
813 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
814
815 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
816 sizeof(struct iwl4965_rxon_cmd),
817 &priv->active_rxon);
818
819 /* If the mask clearing failed then we set
820 * active_rxon back to what it was previously */
821 if (rc) {
822 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
823 IWL_ERROR("Error clearing ASSOC_MSK on current "
824 "configuration (%d).\n", rc);
825 return rc;
826 }
827 }
828
829 IWL_DEBUG_INFO("Sending RXON\n"
830 "* with%s RXON_FILTER_ASSOC_MSK\n"
831 "* channel = %d\n"
832 "* bssid = %s\n",
833 ((priv->staging_rxon.filter_flags &
834 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
835 le16_to_cpu(priv->staging_rxon.channel),
836 print_mac(mac, priv->staging_rxon.bssid_addr));
837
838 iwl4965_set_rxon_hwcrypto(priv, priv->cfg->mod_params->hw_crypto);
839 /* Apply the new configuration */
840 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
841 sizeof(struct iwl4965_rxon_cmd), &priv->staging_rxon);
842 if (rc) {
843 IWL_ERROR("Error setting new configuration (%d).\n", rc);
844 return rc;
845 }
846
847 iwlcore_clear_stations_table(priv);
848
849 #ifdef CONFIG_IWL4965_SENSITIVITY
850 if (!priv->error_recovering)
851 priv->start_calib = 0;
852
853 priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
854 iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
855 #endif /* CONFIG_IWL4965_SENSITIVITY */
856
857 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
858
859 /* If we issue a new RXON command which required a tune then we must
860 * send a new TXPOWER command or we won't be able to Tx any frames */
861 rc = iwl4965_hw_reg_send_txpower(priv);
862 if (rc) {
863 IWL_ERROR("Error setting Tx power (%d).\n", rc);
864 return rc;
865 }
866
867 /* Add the broadcast address so we can send broadcast frames */
868 if (iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0) ==
869 IWL_INVALID_STATION) {
870 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
871 return -EIO;
872 }
873
874 /* If we have set the ASSOC_MSK and we are in BSS mode then
875 * add the IWL_AP_ID to the station rate table */
876 if (iwl_is_associated(priv) &&
877 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
878 if (iwl4965_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
879 == IWL_INVALID_STATION) {
880 IWL_ERROR("Error adding AP address for transmit.\n");
881 return -EIO;
882 }
883 priv->assoc_station_added = 1;
884 if (priv->default_wep_key &&
885 iwl_send_static_wepkey_cmd(priv, 0))
886 IWL_ERROR("Could not send WEP static key.\n");
887 }
888
889 return 0;
890 }
891
892 static int iwl4965_send_bt_config(struct iwl_priv *priv)
893 {
894 struct iwl4965_bt_cmd bt_cmd = {
895 .flags = 3,
896 .lead_time = 0xAA,
897 .max_kill = 1,
898 .kill_ack_mask = 0,
899 .kill_cts_mask = 0,
900 };
901
902 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
903 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
904 }
905
906 static int iwl4965_send_scan_abort(struct iwl_priv *priv)
907 {
908 int rc = 0;
909 struct iwl4965_rx_packet *res;
910 struct iwl_host_cmd cmd = {
911 .id = REPLY_SCAN_ABORT_CMD,
912 .meta.flags = CMD_WANT_SKB,
913 };
914
915 /* If there isn't a scan actively going on in the hardware
916 * then we are in between scan bands and not actually
917 * actively scanning, so don't send the abort command */
918 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
919 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
920 return 0;
921 }
922
923 rc = iwl_send_cmd_sync(priv, &cmd);
924 if (rc) {
925 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
926 return rc;
927 }
928
929 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
930 if (res->u.status != CAN_ABORT_STATUS) {
931 /* The scan abort will return 1 for success or
932 * 2 for "failure". A failure condition can be
933 * due to simply not being in an active scan which
934 * can occur if we send the scan abort before we
935 * the microcode has notified us that a scan is
936 * completed. */
937 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
938 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
939 clear_bit(STATUS_SCAN_HW, &priv->status);
940 }
941
942 dev_kfree_skb_any(cmd.meta.u.skb);
943
944 return rc;
945 }
946
947 static int iwl4965_card_state_sync_callback(struct iwl_priv *priv,
948 struct iwl_cmd *cmd,
949 struct sk_buff *skb)
950 {
951 return 1;
952 }
953
954 /*
955 * CARD_STATE_CMD
956 *
957 * Use: Sets the device's internal card state to enable, disable, or halt
958 *
959 * When in the 'enable' state the card operates as normal.
960 * When in the 'disable' state, the card enters into a low power mode.
961 * When in the 'halt' state, the card is shut down and must be fully
962 * restarted to come back on.
963 */
964 static int iwl4965_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
965 {
966 struct iwl_host_cmd cmd = {
967 .id = REPLY_CARD_STATE_CMD,
968 .len = sizeof(u32),
969 .data = &flags,
970 .meta.flags = meta_flag,
971 };
972
973 if (meta_flag & CMD_ASYNC)
974 cmd.meta.u.callback = iwl4965_card_state_sync_callback;
975
976 return iwl_send_cmd(priv, &cmd);
977 }
978
979 static int iwl4965_add_sta_sync_callback(struct iwl_priv *priv,
980 struct iwl_cmd *cmd, struct sk_buff *skb)
981 {
982 struct iwl4965_rx_packet *res = NULL;
983
984 if (!skb) {
985 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
986 return 1;
987 }
988
989 res = (struct iwl4965_rx_packet *)skb->data;
990 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
991 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
992 res->hdr.flags);
993 return 1;
994 }
995
996 switch (res->u.add_sta.status) {
997 case ADD_STA_SUCCESS_MSK:
998 break;
999 default:
1000 break;
1001 }
1002
1003 /* We didn't cache the SKB; let the caller free it */
1004 return 1;
1005 }
1006
1007 int iwl4965_send_add_station(struct iwl_priv *priv,
1008 struct iwl4965_addsta_cmd *sta, u8 flags)
1009 {
1010 struct iwl4965_rx_packet *res = NULL;
1011 int rc = 0;
1012 struct iwl_host_cmd cmd = {
1013 .id = REPLY_ADD_STA,
1014 .len = sizeof(struct iwl4965_addsta_cmd),
1015 .meta.flags = flags,
1016 .data = sta,
1017 };
1018
1019 if (flags & CMD_ASYNC)
1020 cmd.meta.u.callback = iwl4965_add_sta_sync_callback;
1021 else
1022 cmd.meta.flags |= CMD_WANT_SKB;
1023
1024 rc = iwl_send_cmd(priv, &cmd);
1025
1026 if (rc || (flags & CMD_ASYNC))
1027 return rc;
1028
1029 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1030 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1031 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1032 res->hdr.flags);
1033 rc = -EIO;
1034 }
1035
1036 if (rc == 0) {
1037 switch (res->u.add_sta.status) {
1038 case ADD_STA_SUCCESS_MSK:
1039 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1040 break;
1041 default:
1042 rc = -EIO;
1043 IWL_WARNING("REPLY_ADD_STA failed\n");
1044 break;
1045 }
1046 }
1047
1048 priv->alloc_rxb_skb--;
1049 dev_kfree_skb_any(cmd.meta.u.skb);
1050
1051 return rc;
1052 }
1053
1054 static void iwl4965_clear_free_frames(struct iwl_priv *priv)
1055 {
1056 struct list_head *element;
1057
1058 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1059 priv->frames_count);
1060
1061 while (!list_empty(&priv->free_frames)) {
1062 element = priv->free_frames.next;
1063 list_del(element);
1064 kfree(list_entry(element, struct iwl4965_frame, list));
1065 priv->frames_count--;
1066 }
1067
1068 if (priv->frames_count) {
1069 IWL_WARNING("%d frames still in use. Did we lose one?\n",
1070 priv->frames_count);
1071 priv->frames_count = 0;
1072 }
1073 }
1074
1075 static struct iwl4965_frame *iwl4965_get_free_frame(struct iwl_priv *priv)
1076 {
1077 struct iwl4965_frame *frame;
1078 struct list_head *element;
1079 if (list_empty(&priv->free_frames)) {
1080 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1081 if (!frame) {
1082 IWL_ERROR("Could not allocate frame!\n");
1083 return NULL;
1084 }
1085
1086 priv->frames_count++;
1087 return frame;
1088 }
1089
1090 element = priv->free_frames.next;
1091 list_del(element);
1092 return list_entry(element, struct iwl4965_frame, list);
1093 }
1094
1095 static void iwl4965_free_frame(struct iwl_priv *priv, struct iwl4965_frame *frame)
1096 {
1097 memset(frame, 0, sizeof(*frame));
1098 list_add(&frame->list, &priv->free_frames);
1099 }
1100
1101 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
1102 struct ieee80211_hdr *hdr,
1103 const u8 *dest, int left)
1104 {
1105
1106 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
1107 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1108 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1109 return 0;
1110
1111 if (priv->ibss_beacon->len > left)
1112 return 0;
1113
1114 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1115
1116 return priv->ibss_beacon->len;
1117 }
1118
1119 static u8 iwl4965_rate_get_lowest_plcp(int rate_mask)
1120 {
1121 u8 i;
1122
1123 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1124 i = iwl4965_rates[i].next_ieee) {
1125 if (rate_mask & (1 << i))
1126 return iwl4965_rates[i].plcp;
1127 }
1128
1129 return IWL_RATE_INVALID;
1130 }
1131
1132 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
1133 {
1134 struct iwl4965_frame *frame;
1135 unsigned int frame_size;
1136 int rc;
1137 u8 rate;
1138
1139 frame = iwl4965_get_free_frame(priv);
1140
1141 if (!frame) {
1142 IWL_ERROR("Could not obtain free frame buffer for beacon "
1143 "command.\n");
1144 return -ENOMEM;
1145 }
1146
1147 if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1148 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic &
1149 0xFF0);
1150 if (rate == IWL_INVALID_RATE)
1151 rate = IWL_RATE_6M_PLCP;
1152 } else {
1153 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1154 if (rate == IWL_INVALID_RATE)
1155 rate = IWL_RATE_1M_PLCP;
1156 }
1157
1158 frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
1159
1160 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1161 &frame->u.cmd[0]);
1162
1163 iwl4965_free_frame(priv, frame);
1164
1165 return rc;
1166 }
1167
1168 /******************************************************************************
1169 *
1170 * Misc. internal state and helper functions
1171 *
1172 ******************************************************************************/
1173
1174 static void iwl4965_unset_hw_params(struct iwl_priv *priv)
1175 {
1176 if (priv->shared_virt)
1177 pci_free_consistent(priv->pci_dev,
1178 sizeof(struct iwl4965_shared),
1179 priv->shared_virt,
1180 priv->shared_phys);
1181 }
1182
1183 /**
1184 * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
1185 *
1186 * return : set the bit for each supported rate insert in ie
1187 */
1188 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1189 u16 basic_rate, int *left)
1190 {
1191 u16 ret_rates = 0, bit;
1192 int i;
1193 u8 *cnt = ie;
1194 u8 *rates = ie + 1;
1195
1196 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1197 if (bit & supported_rate) {
1198 ret_rates |= bit;
1199 rates[*cnt] = iwl4965_rates[i].ieee |
1200 ((bit & basic_rate) ? 0x80 : 0x00);
1201 (*cnt)++;
1202 (*left)--;
1203 if ((*left <= 0) ||
1204 (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1205 break;
1206 }
1207 }
1208
1209 return ret_rates;
1210 }
1211
1212 /**
1213 * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
1214 */
1215 static u16 iwl4965_fill_probe_req(struct iwl_priv *priv,
1216 enum ieee80211_band band,
1217 struct ieee80211_mgmt *frame,
1218 int left, int is_direct)
1219 {
1220 int len = 0;
1221 u8 *pos = NULL;
1222 u16 active_rates, ret_rates, cck_rates, active_rate_basic;
1223 #ifdef CONFIG_IWL4965_HT
1224 const struct ieee80211_supported_band *sband =
1225 iwl4965_get_hw_mode(priv, band);
1226 #endif /* CONFIG_IWL4965_HT */
1227
1228 /* Make sure there is enough space for the probe request,
1229 * two mandatory IEs and the data */
1230 left -= 24;
1231 if (left < 0)
1232 return 0;
1233 len += 24;
1234
1235 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1236 memcpy(frame->da, iwl4965_broadcast_addr, ETH_ALEN);
1237 memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1238 memcpy(frame->bssid, iwl4965_broadcast_addr, ETH_ALEN);
1239 frame->seq_ctrl = 0;
1240
1241 /* fill in our indirect SSID IE */
1242 /* ...next IE... */
1243
1244 left -= 2;
1245 if (left < 0)
1246 return 0;
1247 len += 2;
1248 pos = &(frame->u.probe_req.variable[0]);
1249 *pos++ = WLAN_EID_SSID;
1250 *pos++ = 0;
1251
1252 /* fill in our direct SSID IE... */
1253 if (is_direct) {
1254 /* ...next IE... */
1255 left -= 2 + priv->essid_len;
1256 if (left < 0)
1257 return 0;
1258 /* ... fill it in... */
1259 *pos++ = WLAN_EID_SSID;
1260 *pos++ = priv->essid_len;
1261 memcpy(pos, priv->essid, priv->essid_len);
1262 pos += priv->essid_len;
1263 len += 2 + priv->essid_len;
1264 }
1265
1266 /* fill in supported rate */
1267 /* ...next IE... */
1268 left -= 2;
1269 if (left < 0)
1270 return 0;
1271
1272 /* ... fill it in... */
1273 *pos++ = WLAN_EID_SUPP_RATES;
1274 *pos = 0;
1275
1276 /* exclude 60M rate */
1277 active_rates = priv->rates_mask;
1278 active_rates &= ~IWL_RATE_60M_MASK;
1279
1280 active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
1281
1282 cck_rates = IWL_CCK_RATES_MASK & active_rates;
1283 ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
1284 active_rate_basic, &left);
1285 active_rates &= ~ret_rates;
1286
1287 ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
1288 active_rate_basic, &left);
1289 active_rates &= ~ret_rates;
1290
1291 len += 2 + *pos;
1292 pos += (*pos) + 1;
1293 if (active_rates == 0)
1294 goto fill_end;
1295
1296 /* fill in supported extended rate */
1297 /* ...next IE... */
1298 left -= 2;
1299 if (left < 0)
1300 return 0;
1301 /* ... fill it in... */
1302 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1303 *pos = 0;
1304 iwl4965_supported_rate_to_ie(pos, active_rates,
1305 active_rate_basic, &left);
1306 if (*pos > 0)
1307 len += 2 + *pos;
1308
1309 #ifdef CONFIG_IWL4965_HT
1310 if (sband && sband->ht_info.ht_supported) {
1311 struct ieee80211_ht_cap *ht_cap;
1312 pos += (*pos) + 1;
1313 *pos++ = WLAN_EID_HT_CAPABILITY;
1314 *pos++ = sizeof(struct ieee80211_ht_cap);
1315 ht_cap = (struct ieee80211_ht_cap *)pos;
1316 ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
1317 memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
1318 ht_cap->ampdu_params_info =(sband->ht_info.ampdu_factor &
1319 IEEE80211_HT_CAP_AMPDU_FACTOR) |
1320 ((sband->ht_info.ampdu_density << 2) &
1321 IEEE80211_HT_CAP_AMPDU_DENSITY);
1322 len += 2 + sizeof(struct ieee80211_ht_cap);
1323 }
1324 #endif /*CONFIG_IWL4965_HT */
1325
1326 fill_end:
1327 return (u16)len;
1328 }
1329
1330 /*
1331 * QoS support
1332 */
1333 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
1334 struct iwl4965_qosparam_cmd *qos)
1335 {
1336
1337 return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1338 sizeof(struct iwl4965_qosparam_cmd), qos);
1339 }
1340
1341 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
1342 {
1343 unsigned long flags;
1344
1345 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1346 return;
1347
1348 if (!priv->qos_data.qos_enable)
1349 return;
1350
1351 spin_lock_irqsave(&priv->lock, flags);
1352 priv->qos_data.def_qos_parm.qos_flags = 0;
1353
1354 if (priv->qos_data.qos_cap.q_AP.queue_request &&
1355 !priv->qos_data.qos_cap.q_AP.txop_request)
1356 priv->qos_data.def_qos_parm.qos_flags |=
1357 QOS_PARAM_FLG_TXOP_TYPE_MSK;
1358 if (priv->qos_data.qos_active)
1359 priv->qos_data.def_qos_parm.qos_flags |=
1360 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1361
1362 #ifdef CONFIG_IWL4965_HT
1363 if (priv->current_ht_config.is_ht)
1364 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
1365 #endif /* CONFIG_IWL4965_HT */
1366
1367 spin_unlock_irqrestore(&priv->lock, flags);
1368
1369 if (force || iwl_is_associated(priv)) {
1370 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
1371 priv->qos_data.qos_active,
1372 priv->qos_data.def_qos_parm.qos_flags);
1373
1374 iwl4965_send_qos_params_command(priv,
1375 &(priv->qos_data.def_qos_parm));
1376 }
1377 }
1378
1379 /*
1380 * Power management (not Tx power!) functions
1381 */
1382 #define MSEC_TO_USEC 1024
1383
1384 #define NOSLP __constant_cpu_to_le16(0), 0, 0
1385 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
1386 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
1387 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
1388 __constant_cpu_to_le32(X1), \
1389 __constant_cpu_to_le32(X2), \
1390 __constant_cpu_to_le32(X3), \
1391 __constant_cpu_to_le32(X4)}
1392
1393
1394 /* default power management (not Tx power) table values */
1395 /* for tim 0-10 */
1396 static struct iwl4965_power_vec_entry range_0[IWL_POWER_AC] = {
1397 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1398 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
1399 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
1400 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
1401 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
1402 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
1403 };
1404
1405 /* for tim > 10 */
1406 static struct iwl4965_power_vec_entry range_1[IWL_POWER_AC] = {
1407 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1408 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
1409 SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
1410 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
1411 SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
1412 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
1413 SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
1414 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
1415 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
1416 SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
1417 };
1418
1419 int iwl4965_power_init_handle(struct iwl_priv *priv)
1420 {
1421 int rc = 0, i;
1422 struct iwl4965_power_mgr *pow_data;
1423 int size = sizeof(struct iwl4965_power_vec_entry) * IWL_POWER_AC;
1424 u16 pci_pm;
1425
1426 IWL_DEBUG_POWER("Initialize power \n");
1427
1428 pow_data = &(priv->power_data);
1429
1430 memset(pow_data, 0, sizeof(*pow_data));
1431
1432 pow_data->active_index = IWL_POWER_RANGE_0;
1433 pow_data->dtim_val = 0xffff;
1434
1435 memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
1436 memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
1437
1438 rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
1439 if (rc != 0)
1440 return 0;
1441 else {
1442 struct iwl4965_powertable_cmd *cmd;
1443
1444 IWL_DEBUG_POWER("adjust power command flags\n");
1445
1446 for (i = 0; i < IWL_POWER_AC; i++) {
1447 cmd = &pow_data->pwr_range_0[i].cmd;
1448
1449 if (pci_pm & 0x1)
1450 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
1451 else
1452 cmd->flags |= IWL_POWER_PCI_PM_MSK;
1453 }
1454 }
1455 return rc;
1456 }
1457
1458 static int iwl4965_update_power_cmd(struct iwl_priv *priv,
1459 struct iwl4965_powertable_cmd *cmd, u32 mode)
1460 {
1461 int rc = 0, i;
1462 u8 skip;
1463 u32 max_sleep = 0;
1464 struct iwl4965_power_vec_entry *range;
1465 u8 period = 0;
1466 struct iwl4965_power_mgr *pow_data;
1467
1468 if (mode > IWL_POWER_INDEX_5) {
1469 IWL_DEBUG_POWER("Error invalid power mode \n");
1470 return -1;
1471 }
1472 pow_data = &(priv->power_data);
1473
1474 if (pow_data->active_index == IWL_POWER_RANGE_0)
1475 range = &pow_data->pwr_range_0[0];
1476 else
1477 range = &pow_data->pwr_range_1[1];
1478
1479 memcpy(cmd, &range[mode].cmd, sizeof(struct iwl4965_powertable_cmd));
1480
1481 #ifdef IWL_MAC80211_DISABLE
1482 if (priv->assoc_network != NULL) {
1483 unsigned long flags;
1484
1485 period = priv->assoc_network->tim.tim_period;
1486 }
1487 #endif /*IWL_MAC80211_DISABLE */
1488 skip = range[mode].no_dtim;
1489
1490 if (period == 0) {
1491 period = 1;
1492 skip = 0;
1493 }
1494
1495 if (skip == 0) {
1496 max_sleep = period;
1497 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
1498 } else {
1499 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
1500 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
1501 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
1502 }
1503
1504 for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
1505 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
1506 cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
1507 }
1508
1509 IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
1510 IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
1511 IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
1512 IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
1513 le32_to_cpu(cmd->sleep_interval[0]),
1514 le32_to_cpu(cmd->sleep_interval[1]),
1515 le32_to_cpu(cmd->sleep_interval[2]),
1516 le32_to_cpu(cmd->sleep_interval[3]),
1517 le32_to_cpu(cmd->sleep_interval[4]));
1518
1519 return rc;
1520 }
1521
1522 static int iwl4965_send_power_mode(struct iwl_priv *priv, u32 mode)
1523 {
1524 u32 uninitialized_var(final_mode);
1525 int rc;
1526 struct iwl4965_powertable_cmd cmd;
1527
1528 /* If on battery, set to 3,
1529 * if plugged into AC power, set to CAM ("continuously aware mode"),
1530 * else user level */
1531 switch (mode) {
1532 case IWL_POWER_BATTERY:
1533 final_mode = IWL_POWER_INDEX_3;
1534 break;
1535 case IWL_POWER_AC:
1536 final_mode = IWL_POWER_MODE_CAM;
1537 break;
1538 default:
1539 final_mode = mode;
1540 break;
1541 }
1542
1543 cmd.keep_alive_beacons = 0;
1544
1545 iwl4965_update_power_cmd(priv, &cmd, final_mode);
1546
1547 rc = iwl_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
1548
1549 if (final_mode == IWL_POWER_MODE_CAM)
1550 clear_bit(STATUS_POWER_PMI, &priv->status);
1551 else
1552 set_bit(STATUS_POWER_PMI, &priv->status);
1553
1554 return rc;
1555 }
1556
1557 int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
1558 {
1559 /* Filter incoming packets to determine if they are targeted toward
1560 * this network, discarding packets coming from ourselves */
1561 switch (priv->iw_mode) {
1562 case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
1563 /* packets from our adapter are dropped (echo) */
1564 if (!compare_ether_addr(header->addr2, priv->mac_addr))
1565 return 0;
1566 /* {broad,multi}cast packets to our IBSS go through */
1567 if (is_multicast_ether_addr(header->addr1))
1568 return !compare_ether_addr(header->addr3, priv->bssid);
1569 /* packets to our adapter go through */
1570 return !compare_ether_addr(header->addr1, priv->mac_addr);
1571 case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
1572 /* packets from our adapter are dropped (echo) */
1573 if (!compare_ether_addr(header->addr3, priv->mac_addr))
1574 return 0;
1575 /* {broad,multi}cast packets to our BSS go through */
1576 if (is_multicast_ether_addr(header->addr1))
1577 return !compare_ether_addr(header->addr2, priv->bssid);
1578 /* packets to our adapter go through */
1579 return !compare_ether_addr(header->addr1, priv->mac_addr);
1580 default:
1581 break;
1582 }
1583
1584 return 1;
1585 }
1586
1587 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1588
1589 static const char *iwl4965_get_tx_fail_reason(u32 status)
1590 {
1591 switch (status & TX_STATUS_MSK) {
1592 case TX_STATUS_SUCCESS:
1593 return "SUCCESS";
1594 TX_STATUS_ENTRY(SHORT_LIMIT);
1595 TX_STATUS_ENTRY(LONG_LIMIT);
1596 TX_STATUS_ENTRY(FIFO_UNDERRUN);
1597 TX_STATUS_ENTRY(MGMNT_ABORT);
1598 TX_STATUS_ENTRY(NEXT_FRAG);
1599 TX_STATUS_ENTRY(LIFE_EXPIRE);
1600 TX_STATUS_ENTRY(DEST_PS);
1601 TX_STATUS_ENTRY(ABORTED);
1602 TX_STATUS_ENTRY(BT_RETRY);
1603 TX_STATUS_ENTRY(STA_INVALID);
1604 TX_STATUS_ENTRY(FRAG_DROPPED);
1605 TX_STATUS_ENTRY(TID_DISABLE);
1606 TX_STATUS_ENTRY(FRAME_FLUSHED);
1607 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
1608 TX_STATUS_ENTRY(TX_LOCKED);
1609 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
1610 }
1611
1612 return "UNKNOWN";
1613 }
1614
1615 /**
1616 * iwl4965_scan_cancel - Cancel any currently executing HW scan
1617 *
1618 * NOTE: priv->mutex is not required before calling this function
1619 */
1620 static int iwl4965_scan_cancel(struct iwl_priv *priv)
1621 {
1622 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1623 clear_bit(STATUS_SCANNING, &priv->status);
1624 return 0;
1625 }
1626
1627 if (test_bit(STATUS_SCANNING, &priv->status)) {
1628 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1629 IWL_DEBUG_SCAN("Queuing scan abort.\n");
1630 set_bit(STATUS_SCAN_ABORTING, &priv->status);
1631 queue_work(priv->workqueue, &priv->abort_scan);
1632
1633 } else
1634 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
1635
1636 return test_bit(STATUS_SCANNING, &priv->status);
1637 }
1638
1639 return 0;
1640 }
1641
1642 /**
1643 * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
1644 * @ms: amount of time to wait (in milliseconds) for scan to abort
1645 *
1646 * NOTE: priv->mutex must be held before calling this function
1647 */
1648 static int iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
1649 {
1650 unsigned long now = jiffies;
1651 int ret;
1652
1653 ret = iwl4965_scan_cancel(priv);
1654 if (ret && ms) {
1655 mutex_unlock(&priv->mutex);
1656 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
1657 test_bit(STATUS_SCANNING, &priv->status))
1658 msleep(1);
1659 mutex_lock(&priv->mutex);
1660
1661 return test_bit(STATUS_SCANNING, &priv->status);
1662 }
1663
1664 return ret;
1665 }
1666
1667 static void iwl4965_sequence_reset(struct iwl_priv *priv)
1668 {
1669 /* Reset ieee stats */
1670
1671 /* We don't reset the net_device_stats (ieee->stats) on
1672 * re-association */
1673
1674 priv->last_seq_num = -1;
1675 priv->last_frag_num = -1;
1676 priv->last_packet_time = 0;
1677
1678 iwl4965_scan_cancel(priv);
1679 }
1680
1681 #define MAX_UCODE_BEACON_INTERVAL 4096
1682 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
1683
1684 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
1685 {
1686 u16 new_val = 0;
1687 u16 beacon_factor = 0;
1688
1689 beacon_factor =
1690 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
1691 / MAX_UCODE_BEACON_INTERVAL;
1692 new_val = beacon_val / beacon_factor;
1693
1694 return cpu_to_le16(new_val);
1695 }
1696
1697 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
1698 {
1699 u64 interval_tm_unit;
1700 u64 tsf, result;
1701 unsigned long flags;
1702 struct ieee80211_conf *conf = NULL;
1703 u16 beacon_int = 0;
1704
1705 conf = ieee80211_get_hw_conf(priv->hw);
1706
1707 spin_lock_irqsave(&priv->lock, flags);
1708 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
1709 priv->rxon_timing.timestamp.dw[0] =
1710 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
1711
1712 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1713
1714 tsf = priv->timestamp;
1715
1716 beacon_int = priv->beacon_int;
1717 spin_unlock_irqrestore(&priv->lock, flags);
1718
1719 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
1720 if (beacon_int == 0) {
1721 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1722 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1723 } else {
1724 priv->rxon_timing.beacon_interval =
1725 cpu_to_le16(beacon_int);
1726 priv->rxon_timing.beacon_interval =
1727 iwl4965_adjust_beacon_interval(
1728 le16_to_cpu(priv->rxon_timing.beacon_interval));
1729 }
1730
1731 priv->rxon_timing.atim_window = 0;
1732 } else {
1733 priv->rxon_timing.beacon_interval =
1734 iwl4965_adjust_beacon_interval(conf->beacon_int);
1735 /* TODO: we need to get atim_window from upper stack
1736 * for now we set to 0 */
1737 priv->rxon_timing.atim_window = 0;
1738 }
1739
1740 interval_tm_unit =
1741 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
1742 result = do_div(tsf, interval_tm_unit);
1743 priv->rxon_timing.beacon_init_val =
1744 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
1745
1746 IWL_DEBUG_ASSOC
1747 ("beacon interval %d beacon timer %d beacon tim %d\n",
1748 le16_to_cpu(priv->rxon_timing.beacon_interval),
1749 le32_to_cpu(priv->rxon_timing.beacon_init_val),
1750 le16_to_cpu(priv->rxon_timing.atim_window));
1751 }
1752
1753 static int iwl4965_scan_initiate(struct iwl_priv *priv)
1754 {
1755 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1756 IWL_ERROR("APs don't scan.\n");
1757 return 0;
1758 }
1759
1760 if (!iwl_is_ready_rf(priv)) {
1761 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1762 return -EIO;
1763 }
1764
1765 if (test_bit(STATUS_SCANNING, &priv->status)) {
1766 IWL_DEBUG_SCAN("Scan already in progress.\n");
1767 return -EAGAIN;
1768 }
1769
1770 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1771 IWL_DEBUG_SCAN("Scan request while abort pending. "
1772 "Queuing.\n");
1773 return -EAGAIN;
1774 }
1775
1776 IWL_DEBUG_INFO("Starting scan...\n");
1777 priv->scan_bands = 2;
1778 set_bit(STATUS_SCANNING, &priv->status);
1779 priv->scan_start = jiffies;
1780 priv->scan_pass_start = priv->scan_start;
1781
1782 queue_work(priv->workqueue, &priv->request_scan);
1783
1784 return 0;
1785 }
1786
1787
1788 static void iwl4965_set_flags_for_phymode(struct iwl_priv *priv,
1789 enum ieee80211_band band)
1790 {
1791 if (band == IEEE80211_BAND_5GHZ) {
1792 priv->staging_rxon.flags &=
1793 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1794 | RXON_FLG_CCK_MSK);
1795 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1796 } else {
1797 /* Copied from iwl4965_post_associate() */
1798 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1799 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1800 else
1801 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1802
1803 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
1804 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1805
1806 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1807 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1808 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1809 }
1810 }
1811
1812 /*
1813 * initialize rxon structure with default values from eeprom
1814 */
1815 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
1816 {
1817 const struct iwl_channel_info *ch_info;
1818
1819 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1820
1821 switch (priv->iw_mode) {
1822 case IEEE80211_IF_TYPE_AP:
1823 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1824 break;
1825
1826 case IEEE80211_IF_TYPE_STA:
1827 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1828 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1829 break;
1830
1831 case IEEE80211_IF_TYPE_IBSS:
1832 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1833 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1834 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1835 RXON_FILTER_ACCEPT_GRP_MSK;
1836 break;
1837
1838 case IEEE80211_IF_TYPE_MNTR:
1839 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
1840 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
1841 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
1842 break;
1843 default:
1844 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
1845 break;
1846 }
1847
1848 #if 0
1849 /* TODO: Figure out when short_preamble would be set and cache from
1850 * that */
1851 if (!hw_to_local(priv->hw)->short_preamble)
1852 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1853 else
1854 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1855 #endif
1856
1857 ch_info = iwl_get_channel_info(priv, priv->band,
1858 le16_to_cpu(priv->staging_rxon.channel));
1859
1860 if (!ch_info)
1861 ch_info = &priv->channel_info[0];
1862
1863 /*
1864 * in some case A channels are all non IBSS
1865 * in this case force B/G channel
1866 */
1867 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
1868 !(is_channel_ibss(ch_info)))
1869 ch_info = &priv->channel_info[0];
1870
1871 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1872 priv->band = ch_info->band;
1873
1874 iwl4965_set_flags_for_phymode(priv, priv->band);
1875
1876 priv->staging_rxon.ofdm_basic_rates =
1877 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1878 priv->staging_rxon.cck_basic_rates =
1879 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1880
1881 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
1882 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
1883 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1884 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1885 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1886 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1887 iwl4965_set_rxon_chain(priv);
1888 }
1889
1890 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
1891 {
1892 if (mode == IEEE80211_IF_TYPE_IBSS) {
1893 const struct iwl_channel_info *ch_info;
1894
1895 ch_info = iwl_get_channel_info(priv,
1896 priv->band,
1897 le16_to_cpu(priv->staging_rxon.channel));
1898
1899 if (!ch_info || !is_channel_ibss(ch_info)) {
1900 IWL_ERROR("channel %d not IBSS channel\n",
1901 le16_to_cpu(priv->staging_rxon.channel));
1902 return -EINVAL;
1903 }
1904 }
1905
1906 priv->iw_mode = mode;
1907
1908 iwl4965_connection_init_rx_config(priv);
1909 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1910
1911 iwlcore_clear_stations_table(priv);
1912
1913 /* dont commit rxon if rf-kill is on*/
1914 if (!iwl_is_ready_rf(priv))
1915 return -EAGAIN;
1916
1917 cancel_delayed_work(&priv->scan_check);
1918 if (iwl4965_scan_cancel_timeout(priv, 100)) {
1919 IWL_WARNING("Aborted scan still in progress after 100ms\n");
1920 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
1921 return -EAGAIN;
1922 }
1923
1924 iwl4965_commit_rxon(priv);
1925
1926 return 0;
1927 }
1928
1929 static void iwl4965_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
1930 struct ieee80211_tx_control *ctl,
1931 struct iwl_cmd *cmd,
1932 struct sk_buff *skb_frag,
1933 int sta_id)
1934 {
1935 struct iwl4965_hw_key *keyinfo = &priv->stations[sta_id].keyinfo;
1936 struct iwl_wep_key *wepkey;
1937 int keyidx = 0;
1938
1939 BUG_ON(ctl->key_idx > 3);
1940
1941 switch (keyinfo->alg) {
1942 case ALG_CCMP:
1943 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
1944 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
1945 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
1946 cmd->cmd.tx.tx_flags |= TX_CMD_FLG_AGG_CCMP_MSK;
1947 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
1948 break;
1949
1950 case ALG_TKIP:
1951 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
1952 ieee80211_get_tkip_key(keyinfo->conf, skb_frag,
1953 IEEE80211_TKIP_P2_KEY, cmd->cmd.tx.key);
1954 IWL_DEBUG_TX("tx_cmd with tkip hwcrypto\n");
1955 break;
1956
1957 case ALG_WEP:
1958 wepkey = &priv->wep_keys[ctl->key_idx];
1959 cmd->cmd.tx.sec_ctl = 0;
1960 if (priv->default_wep_key) {
1961 /* the WEP key was sent as static */
1962 keyidx = ctl->key_idx;
1963 memcpy(&cmd->cmd.tx.key[3], wepkey->key,
1964 wepkey->key_size);
1965 if (wepkey->key_size == WEP_KEY_LEN_128)
1966 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
1967 } else {
1968 /* the WEP key was sent as dynamic */
1969 keyidx = keyinfo->keyidx;
1970 memcpy(&cmd->cmd.tx.key[3], keyinfo->key,
1971 keyinfo->keylen);
1972 if (keyinfo->keylen == WEP_KEY_LEN_128)
1973 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
1974 }
1975
1976 cmd->cmd.tx.sec_ctl |= (TX_CMD_SEC_WEP |
1977 (keyidx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT);
1978
1979 IWL_DEBUG_TX("Configuring packet for WEP encryption "
1980 "with key %d\n", keyidx);
1981 break;
1982
1983 default:
1984 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
1985 break;
1986 }
1987 }
1988
1989 /*
1990 * handle build REPLY_TX command notification.
1991 */
1992 static void iwl4965_build_tx_cmd_basic(struct iwl_priv *priv,
1993 struct iwl_cmd *cmd,
1994 struct ieee80211_tx_control *ctrl,
1995 struct ieee80211_hdr *hdr,
1996 int is_unicast, u8 std_id)
1997 {
1998 __le16 *qc;
1999 u16 fc = le16_to_cpu(hdr->frame_control);
2000 __le32 tx_flags = cmd->cmd.tx.tx_flags;
2001
2002 cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2003 if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2004 tx_flags |= TX_CMD_FLG_ACK_MSK;
2005 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2006 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2007 if (ieee80211_is_probe_response(fc) &&
2008 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2009 tx_flags |= TX_CMD_FLG_TSF_MSK;
2010 } else {
2011 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2012 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2013 }
2014
2015 if (ieee80211_is_back_request(fc))
2016 tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK;
2017
2018
2019 cmd->cmd.tx.sta_id = std_id;
2020 if (ieee80211_get_morefrag(hdr))
2021 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2022
2023 qc = ieee80211_get_qos_ctrl(hdr);
2024 if (qc) {
2025 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2026 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2027 } else
2028 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2029
2030 if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2031 tx_flags |= TX_CMD_FLG_RTS_MSK;
2032 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2033 } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2034 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2035 tx_flags |= TX_CMD_FLG_CTS_MSK;
2036 }
2037
2038 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2039 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2040
2041 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2042 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2043 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2044 (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2045 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2046 else
2047 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2048 } else {
2049 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2050 }
2051
2052 cmd->cmd.tx.driver_txop = 0;
2053 cmd->cmd.tx.tx_flags = tx_flags;
2054 cmd->cmd.tx.next_frame_len = 0;
2055 }
2056 static void iwl_update_tx_stats(struct iwl_priv *priv, u16 fc, u16 len)
2057 {
2058 /* 0 - mgmt, 1 - cnt, 2 - data */
2059 int idx = (fc & IEEE80211_FCTL_FTYPE) >> 2;
2060 priv->tx_stats[idx].cnt++;
2061 priv->tx_stats[idx].bytes += len;
2062 }
2063 /**
2064 * iwl4965_get_sta_id - Find station's index within station table
2065 *
2066 * If new IBSS station, create new entry in station table
2067 */
2068 static int iwl4965_get_sta_id(struct iwl_priv *priv,
2069 struct ieee80211_hdr *hdr)
2070 {
2071 int sta_id;
2072 u16 fc = le16_to_cpu(hdr->frame_control);
2073 DECLARE_MAC_BUF(mac);
2074
2075 /* If this frame is broadcast or management, use broadcast station id */
2076 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2077 is_multicast_ether_addr(hdr->addr1))
2078 return priv->hw_params.bcast_sta_id;
2079
2080 switch (priv->iw_mode) {
2081
2082 /* If we are a client station in a BSS network, use the special
2083 * AP station entry (that's the only station we communicate with) */
2084 case IEEE80211_IF_TYPE_STA:
2085 return IWL_AP_ID;
2086
2087 /* If we are an AP, then find the station, or use BCAST */
2088 case IEEE80211_IF_TYPE_AP:
2089 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2090 if (sta_id != IWL_INVALID_STATION)
2091 return sta_id;
2092 return priv->hw_params.bcast_sta_id;
2093
2094 /* If this frame is going out to an IBSS network, find the station,
2095 * or create a new station table entry */
2096 case IEEE80211_IF_TYPE_IBSS:
2097 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2098 if (sta_id != IWL_INVALID_STATION)
2099 return sta_id;
2100
2101 /* Create new station table entry */
2102 sta_id = iwl4965_add_station_flags(priv, hdr->addr1,
2103 0, CMD_ASYNC, NULL);
2104
2105 if (sta_id != IWL_INVALID_STATION)
2106 return sta_id;
2107
2108 IWL_DEBUG_DROP("Station %s not in station map. "
2109 "Defaulting to broadcast...\n",
2110 print_mac(mac, hdr->addr1));
2111 iwl_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2112 return priv->hw_params.bcast_sta_id;
2113
2114 default:
2115 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
2116 return priv->hw_params.bcast_sta_id;
2117 }
2118 }
2119
2120 /*
2121 * start REPLY_TX command process
2122 */
2123 static int iwl4965_tx_skb(struct iwl_priv *priv,
2124 struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2125 {
2126 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2127 struct iwl4965_tfd_frame *tfd;
2128 u32 *control_flags;
2129 int txq_id = ctl->queue;
2130 struct iwl4965_tx_queue *txq = NULL;
2131 struct iwl4965_queue *q = NULL;
2132 dma_addr_t phys_addr;
2133 dma_addr_t txcmd_phys;
2134 dma_addr_t scratch_phys;
2135 struct iwl_cmd *out_cmd = NULL;
2136 u16 len, idx, len_org;
2137 u8 id, hdr_len, unicast;
2138 u8 sta_id;
2139 u16 seq_number = 0;
2140 u16 fc;
2141 __le16 *qc;
2142 u8 wait_write_ptr = 0;
2143 unsigned long flags;
2144 int rc;
2145
2146 spin_lock_irqsave(&priv->lock, flags);
2147 if (iwl_is_rfkill(priv)) {
2148 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2149 goto drop_unlock;
2150 }
2151
2152 if (!priv->vif) {
2153 IWL_DEBUG_DROP("Dropping - !priv->vif\n");
2154 goto drop_unlock;
2155 }
2156
2157 if ((ctl->tx_rate->hw_value & 0xFF) == IWL_INVALID_RATE) {
2158 IWL_ERROR("ERROR: No TX rate available.\n");
2159 goto drop_unlock;
2160 }
2161
2162 unicast = !is_multicast_ether_addr(hdr->addr1);
2163 id = 0;
2164
2165 fc = le16_to_cpu(hdr->frame_control);
2166
2167 #ifdef CONFIG_IWLWIFI_DEBUG
2168 if (ieee80211_is_auth(fc))
2169 IWL_DEBUG_TX("Sending AUTH frame\n");
2170 else if (ieee80211_is_assoc_request(fc))
2171 IWL_DEBUG_TX("Sending ASSOC frame\n");
2172 else if (ieee80211_is_reassoc_request(fc))
2173 IWL_DEBUG_TX("Sending REASSOC frame\n");
2174 #endif
2175
2176 /* drop all data frame if we are not associated */
2177 if (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
2178 (!iwl_is_associated(priv) ||
2179 ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id) ||
2180 !priv->assoc_station_added)) {
2181 IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n");
2182 goto drop_unlock;
2183 }
2184
2185 spin_unlock_irqrestore(&priv->lock, flags);
2186
2187 hdr_len = ieee80211_get_hdrlen(fc);
2188
2189 /* Find (or create) index into station table for destination station */
2190 sta_id = iwl4965_get_sta_id(priv, hdr);
2191 if (sta_id == IWL_INVALID_STATION) {
2192 DECLARE_MAC_BUF(mac);
2193
2194 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2195 print_mac(mac, hdr->addr1));
2196 goto drop;
2197 }
2198
2199 IWL_DEBUG_RATE("station Id %d\n", sta_id);
2200
2201 qc = ieee80211_get_qos_ctrl(hdr);
2202 if (qc) {
2203 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2204 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2205 IEEE80211_SCTL_SEQ;
2206 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2207 (hdr->seq_ctrl &
2208 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2209 seq_number += 0x10;
2210 #ifdef CONFIG_IWL4965_HT
2211 /* aggregation is on for this <sta,tid> */
2212 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
2213 txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
2214 priv->stations[sta_id].tid[tid].tfds_in_queue++;
2215 #endif /* CONFIG_IWL4965_HT */
2216 }
2217
2218 /* Descriptor for chosen Tx queue */
2219 txq = &priv->txq[txq_id];
2220 q = &txq->q;
2221
2222 spin_lock_irqsave(&priv->lock, flags);
2223
2224 /* Set up first empty TFD within this queue's circular TFD buffer */
2225 tfd = &txq->bd[q->write_ptr];
2226 memset(tfd, 0, sizeof(*tfd));
2227 control_flags = (u32 *) tfd;
2228 idx = get_cmd_index(q, q->write_ptr, 0);
2229
2230 /* Set up driver data for this TFD */
2231 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info));
2232 txq->txb[q->write_ptr].skb[0] = skb;
2233 memcpy(&(txq->txb[q->write_ptr].status.control),
2234 ctl, sizeof(struct ieee80211_tx_control));
2235
2236 /* Set up first empty entry in queue's array of Tx/cmd buffers */
2237 out_cmd = &txq->cmd[idx];
2238 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2239 memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2240
2241 /*
2242 * Set up the Tx-command (not MAC!) header.
2243 * Store the chosen Tx queue and TFD index within the sequence field;
2244 * after Tx, uCode's Tx response will return this value so driver can
2245 * locate the frame within the tx queue and do post-tx processing.
2246 */
2247 out_cmd->hdr.cmd = REPLY_TX;
2248 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2249 INDEX_TO_SEQ(q->write_ptr)));
2250
2251 /* Copy MAC header from skb into command buffer */
2252 memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2253
2254 /*
2255 * Use the first empty entry in this queue's command buffer array
2256 * to contain the Tx command and MAC header concatenated together
2257 * (payload data will be in another buffer).
2258 * Size of this varies, due to varying MAC header length.
2259 * If end is not dword aligned, we'll have 2 extra bytes at the end
2260 * of the MAC header (device reads on dword boundaries).
2261 * We'll tell device about this padding later.
2262 */
2263 len = priv->hw_params.tx_cmd_len +
2264 sizeof(struct iwl_cmd_header) + hdr_len;
2265
2266 len_org = len;
2267 len = (len + 3) & ~3;
2268
2269 if (len_org != len)
2270 len_org = 1;
2271 else
2272 len_org = 0;
2273
2274 /* Physical address of this Tx command's header (not MAC header!),
2275 * within command buffer array. */
2276 txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl_cmd) * idx +
2277 offsetof(struct iwl_cmd, hdr);
2278
2279 /* Add buffer containing Tx command and MAC(!) header to TFD's
2280 * first entry */
2281 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2282
2283 if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
2284 iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, sta_id);
2285
2286 /* Set up TFD's 2nd entry to point directly to remainder of skb,
2287 * if any (802.11 null frames have no payload). */
2288 len = skb->len - hdr_len;
2289 if (len) {
2290 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2291 len, PCI_DMA_TODEVICE);
2292 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2293 }
2294
2295 /* Tell 4965 about any 2-byte padding after MAC header */
2296 if (len_org)
2297 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
2298
2299 /* Total # bytes to be transmitted */
2300 len = (u16)skb->len;
2301 out_cmd->cmd.tx.len = cpu_to_le16(len);
2302
2303 /* TODO need this for burst mode later on */
2304 iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
2305
2306 /* set is_hcca to 0; it probably will never be implemented */
2307 iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
2308
2309 iwl_update_tx_stats(priv, fc, len);
2310
2311 scratch_phys = txcmd_phys + sizeof(struct iwl_cmd_header) +
2312 offsetof(struct iwl4965_tx_cmd, scratch);
2313 out_cmd->cmd.tx.dram_lsb_ptr = cpu_to_le32(scratch_phys);
2314 out_cmd->cmd.tx.dram_msb_ptr = iwl_get_dma_hi_address(scratch_phys);
2315
2316 if (!ieee80211_get_morefrag(hdr)) {
2317 txq->need_update = 1;
2318 if (qc) {
2319 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2320 priv->stations[sta_id].tid[tid].seq_number = seq_number;
2321 }
2322 } else {
2323 wait_write_ptr = 1;
2324 txq->need_update = 0;
2325 }
2326
2327 iwl_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2328 sizeof(out_cmd->cmd.tx));
2329
2330 iwl_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2331 ieee80211_get_hdrlen(fc));
2332
2333 /* Set up entry for this TFD in Tx byte-count array */
2334 priv->cfg->ops->lib->txq_update_byte_cnt_tbl(priv, txq, len);
2335
2336 /* Tell device the write index *just past* this latest filled TFD */
2337 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
2338 rc = iwl4965_tx_queue_update_write_ptr(priv, txq);
2339 spin_unlock_irqrestore(&priv->lock, flags);
2340
2341 if (rc)
2342 return rc;
2343
2344 if ((iwl4965_queue_space(q) < q->high_mark)
2345 && priv->mac80211_registered) {
2346 if (wait_write_ptr) {
2347 spin_lock_irqsave(&priv->lock, flags);
2348 txq->need_update = 1;
2349 iwl4965_tx_queue_update_write_ptr(priv, txq);
2350 spin_unlock_irqrestore(&priv->lock, flags);
2351 }
2352
2353 ieee80211_stop_queue(priv->hw, ctl->queue);
2354 }
2355
2356 return 0;
2357
2358 drop_unlock:
2359 spin_unlock_irqrestore(&priv->lock, flags);
2360 drop:
2361 return -1;
2362 }
2363
2364 static void iwl4965_set_rate(struct iwl_priv *priv)
2365 {
2366 const struct ieee80211_supported_band *hw = NULL;
2367 struct ieee80211_rate *rate;
2368 int i;
2369
2370 hw = iwl4965_get_hw_mode(priv, priv->band);
2371 if (!hw) {
2372 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2373 return;
2374 }
2375
2376 priv->active_rate = 0;
2377 priv->active_rate_basic = 0;
2378
2379 for (i = 0; i < hw->n_bitrates; i++) {
2380 rate = &(hw->bitrates[i]);
2381 if (rate->hw_value < IWL_RATE_COUNT)
2382 priv->active_rate |= (1 << rate->hw_value);
2383 }
2384
2385 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2386 priv->active_rate, priv->active_rate_basic);
2387
2388 /*
2389 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2390 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2391 * OFDM
2392 */
2393 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2394 priv->staging_rxon.cck_basic_rates =
2395 ((priv->active_rate_basic &
2396 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2397 else
2398 priv->staging_rxon.cck_basic_rates =
2399 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2400
2401 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2402 priv->staging_rxon.ofdm_basic_rates =
2403 ((priv->active_rate_basic &
2404 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2405 IWL_FIRST_OFDM_RATE) & 0xFF;
2406 else
2407 priv->staging_rxon.ofdm_basic_rates =
2408 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2409 }
2410
2411 void iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
2412 {
2413 unsigned long flags;
2414
2415 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2416 return;
2417
2418 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2419 disable_radio ? "OFF" : "ON");
2420
2421 if (disable_radio) {
2422 iwl4965_scan_cancel(priv);
2423 /* FIXME: This is a workaround for AP */
2424 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
2425 spin_lock_irqsave(&priv->lock, flags);
2426 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2427 CSR_UCODE_SW_BIT_RFKILL);
2428 spin_unlock_irqrestore(&priv->lock, flags);
2429 /* call the host command only if no hw rf-kill set */
2430 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2431 iwl4965_send_card_state(priv,
2432 CARD_STATE_CMD_DISABLE,
2433 0);
2434 set_bit(STATUS_RF_KILL_SW, &priv->status);
2435
2436 /* make sure mac80211 stop sending Tx frame */
2437 if (priv->mac80211_registered)
2438 ieee80211_stop_queues(priv->hw);
2439 }
2440 return;
2441 }
2442
2443 spin_lock_irqsave(&priv->lock, flags);
2444 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2445
2446 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2447 spin_unlock_irqrestore(&priv->lock, flags);
2448
2449 /* wake up ucode */
2450 msleep(10);
2451
2452 spin_lock_irqsave(&priv->lock, flags);
2453 iwl_read32(priv, CSR_UCODE_DRV_GP1);
2454 if (!iwl_grab_nic_access(priv))
2455 iwl_release_nic_access(priv);
2456 spin_unlock_irqrestore(&priv->lock, flags);
2457
2458 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2459 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2460 "disabled by HW switch\n");
2461 return;
2462 }
2463
2464 queue_work(priv->workqueue, &priv->restart);
2465 return;
2466 }
2467
2468 void iwl4965_set_decrypted_flag(struct iwl_priv *priv, struct sk_buff *skb,
2469 u32 decrypt_res, struct ieee80211_rx_status *stats)
2470 {
2471 u16 fc =
2472 le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
2473
2474 if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
2475 return;
2476
2477 if (!(fc & IEEE80211_FCTL_PROTECTED))
2478 return;
2479
2480 IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
2481 switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
2482 case RX_RES_STATUS_SEC_TYPE_TKIP:
2483 /* The uCode has got a bad phase 1 Key, pushes the packet.
2484 * Decryption will be done in SW. */
2485 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2486 RX_RES_STATUS_BAD_KEY_TTAK)
2487 break;
2488
2489 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2490 RX_RES_STATUS_BAD_ICV_MIC)
2491 stats->flag |= RX_FLAG_MMIC_ERROR;
2492 case RX_RES_STATUS_SEC_TYPE_WEP:
2493 case RX_RES_STATUS_SEC_TYPE_CCMP:
2494 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2495 RX_RES_STATUS_DECRYPT_OK) {
2496 IWL_DEBUG_RX("hw decrypt successfully!!!\n");
2497 stats->flag |= RX_FLAG_DECRYPTED;
2498 }
2499 break;
2500
2501 default:
2502 break;
2503 }
2504 }
2505
2506
2507 #define IWL_PACKET_RETRY_TIME HZ
2508
2509 int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
2510 {
2511 u16 sc = le16_to_cpu(header->seq_ctrl);
2512 u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
2513 u16 frag = sc & IEEE80211_SCTL_FRAG;
2514 u16 *last_seq, *last_frag;
2515 unsigned long *last_time;
2516
2517 switch (priv->iw_mode) {
2518 case IEEE80211_IF_TYPE_IBSS:{
2519 struct list_head *p;
2520 struct iwl4965_ibss_seq *entry = NULL;
2521 u8 *mac = header->addr2;
2522 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
2523
2524 __list_for_each(p, &priv->ibss_mac_hash[index]) {
2525 entry = list_entry(p, struct iwl4965_ibss_seq, list);
2526 if (!compare_ether_addr(entry->mac, mac))
2527 break;
2528 }
2529 if (p == &priv->ibss_mac_hash[index]) {
2530 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
2531 if (!entry) {
2532 IWL_ERROR("Cannot malloc new mac entry\n");
2533 return 0;
2534 }
2535 memcpy(entry->mac, mac, ETH_ALEN);
2536 entry->seq_num = seq;
2537 entry->frag_num = frag;
2538 entry->packet_time = jiffies;
2539 list_add(&entry->list, &priv->ibss_mac_hash[index]);
2540 return 0;
2541 }
2542 last_seq = &entry->seq_num;
2543 last_frag = &entry->frag_num;
2544 last_time = &entry->packet_time;
2545 break;
2546 }
2547 case IEEE80211_IF_TYPE_STA:
2548 last_seq = &priv->last_seq_num;
2549 last_frag = &priv->last_frag_num;
2550 last_time = &priv->last_packet_time;
2551 break;
2552 default:
2553 return 0;
2554 }
2555 if ((*last_seq == seq) &&
2556 time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
2557 if (*last_frag == frag)
2558 goto drop;
2559 if (*last_frag + 1 != frag)
2560 /* out-of-order fragment */
2561 goto drop;
2562 } else
2563 *last_seq = seq;
2564
2565 *last_frag = frag;
2566 *last_time = jiffies;
2567 return 0;
2568
2569 drop:
2570 return 1;
2571 }
2572
2573 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
2574
2575 #include "iwl-spectrum.h"
2576
2577 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
2578 #define BEACON_TIME_MASK_HIGH 0xFF000000
2579 #define TIME_UNIT 1024
2580
2581 /*
2582 * extended beacon time format
2583 * time in usec will be changed into a 32-bit value in 8:24 format
2584 * the high 1 byte is the beacon counts
2585 * the lower 3 bytes is the time in usec within one beacon interval
2586 */
2587
2588 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
2589 {
2590 u32 quot;
2591 u32 rem;
2592 u32 interval = beacon_interval * 1024;
2593
2594 if (!interval || !usec)
2595 return 0;
2596
2597 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
2598 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
2599
2600 return (quot << 24) + rem;
2601 }
2602
2603 /* base is usually what we get from ucode with each received frame,
2604 * the same as HW timer counter counting down
2605 */
2606
2607 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
2608 {
2609 u32 base_low = base & BEACON_TIME_MASK_LOW;
2610 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
2611 u32 interval = beacon_interval * TIME_UNIT;
2612 u32 res = (base & BEACON_TIME_MASK_HIGH) +
2613 (addon & BEACON_TIME_MASK_HIGH);
2614
2615 if (base_low > addon_low)
2616 res += base_low - addon_low;
2617 else if (base_low < addon_low) {
2618 res += interval + base_low - addon_low;
2619 res += (1 << 24);
2620 } else
2621 res += (1 << 24);
2622
2623 return cpu_to_le32(res);
2624 }
2625
2626 static int iwl4965_get_measurement(struct iwl_priv *priv,
2627 struct ieee80211_measurement_params *params,
2628 u8 type)
2629 {
2630 struct iwl4965_spectrum_cmd spectrum;
2631 struct iwl4965_rx_packet *res;
2632 struct iwl_host_cmd cmd = {
2633 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
2634 .data = (void *)&spectrum,
2635 .meta.flags = CMD_WANT_SKB,
2636 };
2637 u32 add_time = le64_to_cpu(params->start_time);
2638 int rc;
2639 int spectrum_resp_status;
2640 int duration = le16_to_cpu(params->duration);
2641
2642 if (iwl_is_associated(priv))
2643 add_time =
2644 iwl4965_usecs_to_beacons(
2645 le64_to_cpu(params->start_time) - priv->last_tsf,
2646 le16_to_cpu(priv->rxon_timing.beacon_interval));
2647
2648 memset(&spectrum, 0, sizeof(spectrum));
2649
2650 spectrum.channel_count = cpu_to_le16(1);
2651 spectrum.flags =
2652 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
2653 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
2654 cmd.len = sizeof(spectrum);
2655 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
2656
2657 if (iwl_is_associated(priv))
2658 spectrum.start_time =
2659 iwl4965_add_beacon_time(priv->last_beacon_time,
2660 add_time,
2661 le16_to_cpu(priv->rxon_timing.beacon_interval));
2662 else
2663 spectrum.start_time = 0;
2664
2665 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
2666 spectrum.channels[0].channel = params->channel;
2667 spectrum.channels[0].type = type;
2668 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
2669 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
2670 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
2671
2672 rc = iwl_send_cmd_sync(priv, &cmd);
2673 if (rc)
2674 return rc;
2675
2676 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
2677 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
2678 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
2679 rc = -EIO;
2680 }
2681
2682 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
2683 switch (spectrum_resp_status) {
2684 case 0: /* Command will be handled */
2685 if (res->u.spectrum.id != 0xff) {
2686 IWL_DEBUG_INFO
2687 ("Replaced existing measurement: %d\n",
2688 res->u.spectrum.id);
2689 priv->measurement_status &= ~MEASUREMENT_READY;
2690 }
2691 priv->measurement_status |= MEASUREMENT_ACTIVE;
2692 rc = 0;
2693 break;
2694
2695 case 1: /* Command will not be handled */
2696 rc = -EAGAIN;
2697 break;
2698 }
2699
2700 dev_kfree_skb_any(cmd.meta.u.skb);
2701
2702 return rc;
2703 }
2704 #endif
2705
2706 static void iwl4965_txstatus_to_ieee(struct iwl_priv *priv,
2707 struct iwl4965_tx_info *tx_sta)
2708 {
2709
2710 tx_sta->status.ack_signal = 0;
2711 tx_sta->status.excessive_retries = 0;
2712 tx_sta->status.queue_length = 0;
2713 tx_sta->status.queue_number = 0;
2714
2715 if (in_interrupt())
2716 ieee80211_tx_status_irqsafe(priv->hw,
2717 tx_sta->skb[0], &(tx_sta->status));
2718 else
2719 ieee80211_tx_status(priv->hw,
2720 tx_sta->skb[0], &(tx_sta->status));
2721
2722 tx_sta->skb[0] = NULL;
2723 }
2724
2725 /**
2726 * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
2727 *
2728 * When FW advances 'R' index, all entries between old and new 'R' index
2729 * need to be reclaimed. As result, some free space forms. If there is
2730 * enough free space (> low mark), wake the stack that feeds us.
2731 */
2732 int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
2733 {
2734 struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
2735 struct iwl4965_queue *q = &txq->q;
2736 int nfreed = 0;
2737
2738 if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
2739 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
2740 "is out of range [0-%d] %d %d.\n", txq_id,
2741 index, q->n_bd, q->write_ptr, q->read_ptr);
2742 return 0;
2743 }
2744
2745 for (index = iwl_queue_inc_wrap(index, q->n_bd);
2746 q->read_ptr != index;
2747 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
2748 if (txq_id != IWL_CMD_QUEUE_NUM) {
2749 iwl4965_txstatus_to_ieee(priv,
2750 &(txq->txb[txq->q.read_ptr]));
2751 iwl4965_hw_txq_free_tfd(priv, txq);
2752 } else if (nfreed > 1) {
2753 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
2754 q->write_ptr, q->read_ptr);
2755 queue_work(priv->workqueue, &priv->restart);
2756 }
2757 nfreed++;
2758 }
2759
2760 /* if (iwl4965_queue_space(q) > q->low_mark && (txq_id >= 0) &&
2761 (txq_id != IWL_CMD_QUEUE_NUM) &&
2762 priv->mac80211_registered)
2763 ieee80211_wake_queue(priv->hw, txq_id); */
2764
2765
2766 return nfreed;
2767 }
2768
2769 static int iwl4965_is_tx_success(u32 status)
2770 {
2771 status &= TX_STATUS_MSK;
2772 return (status == TX_STATUS_SUCCESS)
2773 || (status == TX_STATUS_DIRECT_DONE);
2774 }
2775
2776 /******************************************************************************
2777 *
2778 * Generic RX handler implementations
2779 *
2780 ******************************************************************************/
2781 #ifdef CONFIG_IWL4965_HT
2782
2783 static inline int iwl4965_get_ra_sta_id(struct iwl_priv *priv,
2784 struct ieee80211_hdr *hdr)
2785 {
2786 if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
2787 return IWL_AP_ID;
2788 else {
2789 u8 *da = ieee80211_get_DA(hdr);
2790 return iwl4965_hw_find_station(priv, da);
2791 }
2792 }
2793
2794 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
2795 struct iwl_priv *priv, int txq_id, int idx)
2796 {
2797 if (priv->txq[txq_id].txb[idx].skb[0])
2798 return (struct ieee80211_hdr *)priv->txq[txq_id].
2799 txb[idx].skb[0]->data;
2800 return NULL;
2801 }
2802
2803 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
2804 {
2805 __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
2806 tx_resp->frame_count);
2807 return le32_to_cpu(*scd_ssn) & MAX_SN;
2808
2809 }
2810
2811 /**
2812 * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
2813 */
2814 static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
2815 struct iwl4965_ht_agg *agg,
2816 struct iwl4965_tx_resp_agg *tx_resp,
2817 u16 start_idx)
2818 {
2819 u16 status;
2820 struct agg_tx_status *frame_status = &tx_resp->status;
2821 struct ieee80211_tx_status *tx_status = NULL;
2822 struct ieee80211_hdr *hdr = NULL;
2823 int i, sh;
2824 int txq_id, idx;
2825 u16 seq;
2826
2827 if (agg->wait_for_ba)
2828 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
2829
2830 agg->frame_count = tx_resp->frame_count;
2831 agg->start_idx = start_idx;
2832 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
2833 agg->bitmap = 0;
2834
2835 /* # frames attempted by Tx command */
2836 if (agg->frame_count == 1) {
2837 /* Only one frame was attempted; no block-ack will arrive */
2838 status = le16_to_cpu(frame_status[0].status);
2839 seq = le16_to_cpu(frame_status[0].sequence);
2840 idx = SEQ_TO_INDEX(seq);
2841 txq_id = SEQ_TO_QUEUE(seq);
2842
2843 /* FIXME: code repetition */
2844 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
2845 agg->frame_count, agg->start_idx, idx);
2846
2847 tx_status = &(priv->txq[txq_id].txb[idx].status);
2848 tx_status->retry_count = tx_resp->failure_frame;
2849 tx_status->queue_number = status & 0xff;
2850 tx_status->queue_length = tx_resp->failure_rts;
2851 tx_status->control.flags &= ~IEEE80211_TXCTL_AMPDU;
2852 tx_status->flags = iwl4965_is_tx_success(status)?
2853 IEEE80211_TX_STATUS_ACK : 0;
2854 iwl4965_hwrate_to_tx_control(priv,
2855 le32_to_cpu(tx_resp->rate_n_flags),
2856 &tx_status->control);
2857 /* FIXME: code repetition end */
2858
2859 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
2860 status & 0xff, tx_resp->failure_frame);
2861 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
2862 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
2863
2864 agg->wait_for_ba = 0;
2865 } else {
2866 /* Two or more frames were attempted; expect block-ack */
2867 u64 bitmap = 0;
2868 int start = agg->start_idx;
2869
2870 /* Construct bit-map of pending frames within Tx window */
2871 for (i = 0; i < agg->frame_count; i++) {
2872 u16 sc;
2873 status = le16_to_cpu(frame_status[i].status);
2874 seq = le16_to_cpu(frame_status[i].sequence);
2875 idx = SEQ_TO_INDEX(seq);
2876 txq_id = SEQ_TO_QUEUE(seq);
2877
2878 if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
2879 AGG_TX_STATE_ABORT_MSK))
2880 continue;
2881
2882 IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
2883 agg->frame_count, txq_id, idx);
2884
2885 hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
2886
2887 sc = le16_to_cpu(hdr->seq_ctrl);
2888 if (idx != (SEQ_TO_SN(sc) & 0xff)) {
2889 IWL_ERROR("BUG_ON idx doesn't match seq control"
2890 " idx=%d, seq_idx=%d, seq=%d\n",
2891 idx, SEQ_TO_SN(sc),
2892 hdr->seq_ctrl);
2893 return -1;
2894 }
2895
2896 IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
2897 i, idx, SEQ_TO_SN(sc));
2898
2899 sh = idx - start;
2900 if (sh > 64) {
2901 sh = (start - idx) + 0xff;
2902 bitmap = bitmap << sh;
2903 sh = 0;
2904 start = idx;
2905 } else if (sh < -64)
2906 sh = 0xff - (start - idx);
2907 else if (sh < 0) {
2908 sh = start - idx;
2909 start = idx;
2910 bitmap = bitmap << sh;
2911 sh = 0;
2912 }
2913 bitmap |= (1 << sh);
2914 IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
2915 start, (u32)(bitmap & 0xFFFFFFFF));
2916 }
2917
2918 agg->bitmap = bitmap;
2919 agg->start_idx = start;
2920 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
2921 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
2922 agg->frame_count, agg->start_idx,
2923 (unsigned long long)agg->bitmap);
2924
2925 if (bitmap)
2926 agg->wait_for_ba = 1;
2927 }
2928 return 0;
2929 }
2930 #endif
2931
2932 /**
2933 * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
2934 */
2935 static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
2936 struct iwl4965_rx_mem_buffer *rxb)
2937 {
2938 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
2939 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
2940 int txq_id = SEQ_TO_QUEUE(sequence);
2941 int index = SEQ_TO_INDEX(sequence);
2942 struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
2943 struct ieee80211_tx_status *tx_status;
2944 struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
2945 u32 status = le32_to_cpu(tx_resp->status);
2946 #ifdef CONFIG_IWL4965_HT
2947 int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
2948 struct ieee80211_hdr *hdr;
2949 __le16 *qc;
2950 #endif
2951
2952 if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
2953 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
2954 "is out of range [0-%d] %d %d\n", txq_id,
2955 index, txq->q.n_bd, txq->q.write_ptr,
2956 txq->q.read_ptr);
2957 return;
2958 }
2959
2960 #ifdef CONFIG_IWL4965_HT
2961 hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
2962 qc = ieee80211_get_qos_ctrl(hdr);
2963
2964 if (qc)
2965 tid = le16_to_cpu(*qc) & 0xf;
2966
2967 sta_id = iwl4965_get_ra_sta_id(priv, hdr);
2968 if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
2969 IWL_ERROR("Station not known\n");
2970 return;
2971 }
2972
2973 if (txq->sched_retry) {
2974 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
2975 struct iwl4965_ht_agg *agg = NULL;
2976
2977 if (!qc)
2978 return;
2979
2980 agg = &priv->stations[sta_id].tid[tid].agg;
2981
2982 iwl4965_tx_status_reply_tx(priv, agg,
2983 (struct iwl4965_tx_resp_agg *)tx_resp, index);
2984
2985 if ((tx_resp->frame_count == 1) &&
2986 !iwl4965_is_tx_success(status)) {
2987 /* TODO: send BAR */
2988 }
2989
2990 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
2991 int freed;
2992 index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
2993 IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
2994 "%d index %d\n", scd_ssn , index);
2995 freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
2996 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
2997
2998 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
2999 txq_id >= 0 && priv->mac80211_registered &&
3000 agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)
3001 ieee80211_wake_queue(priv->hw, txq_id);
3002
3003 iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3004 }
3005 } else {
3006 #endif /* CONFIG_IWL4965_HT */
3007 tx_status = &(txq->txb[txq->q.read_ptr].status);
3008
3009 tx_status->retry_count = tx_resp->failure_frame;
3010 tx_status->queue_number = status;
3011 tx_status->queue_length = tx_resp->bt_kill_count;
3012 tx_status->queue_length |= tx_resp->failure_rts;
3013 tx_status->flags =
3014 iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3015 iwl4965_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags),
3016 &tx_status->control);
3017
3018 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3019 "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
3020 status, le32_to_cpu(tx_resp->rate_n_flags),
3021 tx_resp->failure_frame);
3022
3023 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3024 if (index != -1) {
3025 int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3026 #ifdef CONFIG_IWL4965_HT
3027 if (tid != MAX_TID_COUNT)
3028 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3029 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3030 (txq_id >= 0) &&
3031 priv->mac80211_registered)
3032 ieee80211_wake_queue(priv->hw, txq_id);
3033 if (tid != MAX_TID_COUNT)
3034 iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3035 #endif
3036 }
3037 #ifdef CONFIG_IWL4965_HT
3038 }
3039 #endif /* CONFIG_IWL4965_HT */
3040
3041 if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3042 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
3043 }
3044
3045
3046 static void iwl4965_rx_reply_alive(struct iwl_priv *priv,
3047 struct iwl4965_rx_mem_buffer *rxb)
3048 {
3049 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3050 struct iwl4965_alive_resp *palive;
3051 struct delayed_work *pwork;
3052
3053 palive = &pkt->u.alive_frame;
3054
3055 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3056 "0x%01X 0x%01X\n",
3057 palive->is_valid, palive->ver_type,
3058 palive->ver_subtype);
3059
3060 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3061 IWL_DEBUG_INFO("Initialization Alive received.\n");
3062 memcpy(&priv->card_alive_init,
3063 &pkt->u.alive_frame,
3064 sizeof(struct iwl4965_init_alive_resp));
3065 pwork = &priv->init_alive_start;
3066 } else {
3067 IWL_DEBUG_INFO("Runtime Alive received.\n");
3068 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3069 sizeof(struct iwl4965_alive_resp));
3070 pwork = &priv->alive_start;
3071 }
3072
3073 /* We delay the ALIVE response by 5ms to
3074 * give the HW RF Kill time to activate... */
3075 if (palive->is_valid == UCODE_VALID_OK)
3076 queue_delayed_work(priv->workqueue, pwork,
3077 msecs_to_jiffies(5));
3078 else
3079 IWL_WARNING("uCode did not respond OK.\n");
3080 }
3081
3082 static void iwl4965_rx_reply_add_sta(struct iwl_priv *priv,
3083 struct iwl4965_rx_mem_buffer *rxb)
3084 {
3085 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3086
3087 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3088 return;
3089 }
3090
3091 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
3092 struct iwl4965_rx_mem_buffer *rxb)
3093 {
3094 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3095
3096 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3097 "seq 0x%04X ser 0x%08X\n",
3098 le32_to_cpu(pkt->u.err_resp.error_type),
3099 get_cmd_string(pkt->u.err_resp.cmd_id),
3100 pkt->u.err_resp.cmd_id,
3101 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3102 le32_to_cpu(pkt->u.err_resp.error_info));
3103 }
3104
3105 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3106
3107 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl4965_rx_mem_buffer *rxb)
3108 {
3109 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3110 struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon;
3111 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
3112 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3113 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3114 rxon->channel = csa->channel;
3115 priv->staging_rxon.channel = csa->channel;
3116 }
3117
3118 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
3119 struct iwl4965_rx_mem_buffer *rxb)
3120 {
3121 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3122 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3123 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
3124
3125 if (!report->state) {
3126 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3127 "Spectrum Measure Notification: Start\n");
3128 return;
3129 }
3130
3131 memcpy(&priv->measure_report, report, sizeof(*report));
3132 priv->measurement_status |= MEASUREMENT_READY;
3133 #endif
3134 }
3135
3136 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
3137 struct iwl4965_rx_mem_buffer *rxb)
3138 {
3139 #ifdef CONFIG_IWLWIFI_DEBUG
3140 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3141 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
3142 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3143 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3144 #endif
3145 }
3146
3147 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
3148 struct iwl4965_rx_mem_buffer *rxb)
3149 {
3150 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3151 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3152 "notification for %s:\n",
3153 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3154 iwl_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3155 }
3156
3157 static void iwl4965_bg_beacon_update(struct work_struct *work)
3158 {
3159 struct iwl_priv *priv =
3160 container_of(work, struct iwl_priv, beacon_update);
3161 struct sk_buff *beacon;
3162
3163 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3164 beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL);
3165
3166 if (!beacon) {
3167 IWL_ERROR("update beacon failed\n");
3168 return;
3169 }
3170
3171 mutex_lock(&priv->mutex);
3172 /* new beacon skb is allocated every time; dispose previous.*/
3173 if (priv->ibss_beacon)
3174 dev_kfree_skb(priv->ibss_beacon);
3175
3176 priv->ibss_beacon = beacon;
3177 mutex_unlock(&priv->mutex);
3178
3179 iwl4965_send_beacon_cmd(priv);
3180 }
3181
3182 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
3183 struct iwl4965_rx_mem_buffer *rxb)
3184 {
3185 #ifdef CONFIG_IWLWIFI_DEBUG
3186 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3187 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
3188 u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
3189
3190 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3191 "tsf %d %d rate %d\n",
3192 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3193 beacon->beacon_notify_hdr.failure_frame,
3194 le32_to_cpu(beacon->ibss_mgr_status),
3195 le32_to_cpu(beacon->high_tsf),
3196 le32_to_cpu(beacon->low_tsf), rate);
3197 #endif
3198
3199 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3200 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3201 queue_work(priv->workqueue, &priv->beacon_update);
3202 }
3203
3204 /* Service response to REPLY_SCAN_CMD (0x80) */
3205 static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
3206 struct iwl4965_rx_mem_buffer *rxb)
3207 {
3208 #ifdef CONFIG_IWLWIFI_DEBUG
3209 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3210 struct iwl4965_scanreq_notification *notif =
3211 (struct iwl4965_scanreq_notification *)pkt->u.raw;
3212
3213 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3214 #endif
3215 }
3216
3217 /* Service SCAN_START_NOTIFICATION (0x82) */
3218 static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
3219 struct iwl4965_rx_mem_buffer *rxb)
3220 {
3221 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3222 struct iwl4965_scanstart_notification *notif =
3223 (struct iwl4965_scanstart_notification *)pkt->u.raw;
3224 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3225 IWL_DEBUG_SCAN("Scan start: "
3226 "%d [802.11%s] "
3227 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3228 notif->channel,
3229 notif->band ? "bg" : "a",
3230 notif->tsf_high,
3231 notif->tsf_low, notif->status, notif->beacon_timer);
3232 }
3233
3234 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3235 static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
3236 struct iwl4965_rx_mem_buffer *rxb)
3237 {
3238 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3239 struct iwl4965_scanresults_notification *notif =
3240 (struct iwl4965_scanresults_notification *)pkt->u.raw;
3241
3242 IWL_DEBUG_SCAN("Scan ch.res: "
3243 "%d [802.11%s] "
3244 "(TSF: 0x%08X:%08X) - %d "
3245 "elapsed=%lu usec (%dms since last)\n",
3246 notif->channel,
3247 notif->band ? "bg" : "a",
3248 le32_to_cpu(notif->tsf_high),
3249 le32_to_cpu(notif->tsf_low),
3250 le32_to_cpu(notif->statistics[0]),
3251 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3252 jiffies_to_msecs(elapsed_jiffies
3253 (priv->last_scan_jiffies, jiffies)));
3254
3255 priv->last_scan_jiffies = jiffies;
3256 priv->next_scan_jiffies = 0;
3257 }
3258
3259 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3260 static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
3261 struct iwl4965_rx_mem_buffer *rxb)
3262 {
3263 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3264 struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3265
3266 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3267 scan_notif->scanned_channels,
3268 scan_notif->tsf_low,
3269 scan_notif->tsf_high, scan_notif->status);
3270
3271 /* The HW is no longer scanning */
3272 clear_bit(STATUS_SCAN_HW, &priv->status);
3273
3274 /* The scan completion notification came in, so kill that timer... */
3275 cancel_delayed_work(&priv->scan_check);
3276
3277 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3278 (priv->scan_bands == 2) ? "2.4" : "5.2",
3279 jiffies_to_msecs(elapsed_jiffies
3280 (priv->scan_pass_start, jiffies)));
3281
3282 /* Remove this scanned band from the list
3283 * of pending bands to scan */
3284 priv->scan_bands--;
3285
3286 /* If a request to abort was given, or the scan did not succeed
3287 * then we reset the scan state machine and terminate,
3288 * re-queuing another scan if one has been requested */
3289 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3290 IWL_DEBUG_INFO("Aborted scan completed.\n");
3291 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3292 } else {
3293 /* If there are more bands on this scan pass reschedule */
3294 if (priv->scan_bands > 0)
3295 goto reschedule;
3296 }
3297
3298 priv->last_scan_jiffies = jiffies;
3299 priv->next_scan_jiffies = 0;
3300 IWL_DEBUG_INFO("Setting scan to off\n");
3301
3302 clear_bit(STATUS_SCANNING, &priv->status);
3303
3304 IWL_DEBUG_INFO("Scan took %dms\n",
3305 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3306
3307 queue_work(priv->workqueue, &priv->scan_completed);
3308
3309 return;
3310
3311 reschedule:
3312 priv->scan_pass_start = jiffies;
3313 queue_work(priv->workqueue, &priv->request_scan);
3314 }
3315
3316 /* Handle notification from uCode that card's power state is changing
3317 * due to software, hardware, or critical temperature RFKILL */
3318 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
3319 struct iwl4965_rx_mem_buffer *rxb)
3320 {
3321 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3322 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3323 unsigned long status = priv->status;
3324
3325 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3326 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3327 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3328
3329 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
3330 RF_CARD_DISABLED)) {
3331
3332 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
3333 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3334
3335 if (!iwl_grab_nic_access(priv)) {
3336 iwl_write_direct32(
3337 priv, HBUS_TARG_MBX_C,
3338 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3339
3340 iwl_release_nic_access(priv);
3341 }
3342
3343 if (!(flags & RXON_CARD_DISABLED)) {
3344 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3345 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3346 if (!iwl_grab_nic_access(priv)) {
3347 iwl_write_direct32(
3348 priv, HBUS_TARG_MBX_C,
3349 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3350
3351 iwl_release_nic_access(priv);
3352 }
3353 }
3354
3355 if (flags & RF_CARD_DISABLED) {
3356 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
3357 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
3358 iwl_read32(priv, CSR_UCODE_DRV_GP1);
3359 if (!iwl_grab_nic_access(priv))
3360 iwl_release_nic_access(priv);
3361 }
3362 }
3363
3364 if (flags & HW_CARD_DISABLED)
3365 set_bit(STATUS_RF_KILL_HW, &priv->status);
3366 else
3367 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3368
3369
3370 if (flags & SW_CARD_DISABLED)
3371 set_bit(STATUS_RF_KILL_SW, &priv->status);
3372 else
3373 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3374
3375 if (!(flags & RXON_CARD_DISABLED))
3376 iwl4965_scan_cancel(priv);
3377
3378 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3379 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3380 (test_bit(STATUS_RF_KILL_SW, &status) !=
3381 test_bit(STATUS_RF_KILL_SW, &priv->status)))
3382 queue_work(priv->workqueue, &priv->rf_kill);
3383 else
3384 wake_up_interruptible(&priv->wait_command_queue);
3385 }
3386
3387 /**
3388 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
3389 *
3390 * Setup the RX handlers for each of the reply types sent from the uCode
3391 * to the host.
3392 *
3393 * This function chains into the hardware specific files for them to setup
3394 * any hardware specific handlers as well.
3395 */
3396 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
3397 {
3398 priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
3399 priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
3400 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
3401 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
3402 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3403 iwl4965_rx_spectrum_measure_notif;
3404 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
3405 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3406 iwl4965_rx_pm_debug_statistics_notif;
3407 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
3408
3409 /*
3410 * The same handler is used for both the REPLY to a discrete
3411 * statistics request from the host as well as for the periodic
3412 * statistics notifications (after received beacons) from the uCode.
3413 */
3414 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
3415 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
3416
3417 priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
3418 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
3419 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3420 iwl4965_rx_scan_results_notif;
3421 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3422 iwl4965_rx_scan_complete_notif;
3423 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
3424 priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
3425
3426 /* Set up hardware specific Rx handlers */
3427 iwl4965_hw_rx_handler_setup(priv);
3428 }
3429
3430 /**
3431 * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3432 * @rxb: Rx buffer to reclaim
3433 *
3434 * If an Rx buffer has an async callback associated with it the callback
3435 * will be executed. The attached skb (if present) will only be freed
3436 * if the callback returns 1
3437 */
3438 static void iwl4965_tx_cmd_complete(struct iwl_priv *priv,
3439 struct iwl4965_rx_mem_buffer *rxb)
3440 {
3441 struct iwl4965_rx_packet *pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
3442 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3443 int txq_id = SEQ_TO_QUEUE(sequence);
3444 int index = SEQ_TO_INDEX(sequence);
3445 int huge = sequence & SEQ_HUGE_FRAME;
3446 int cmd_index;
3447 struct iwl_cmd *cmd;
3448
3449 /* If a Tx command is being handled and it isn't in the actual
3450 * command queue then there a command routing bug has been introduced
3451 * in the queue management code. */
3452 if (txq_id != IWL_CMD_QUEUE_NUM)
3453 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
3454 txq_id, pkt->hdr.cmd);
3455 BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3456
3457 cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
3458 cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3459
3460 /* Input error checking is done when commands are added to queue. */
3461 if (cmd->meta.flags & CMD_WANT_SKB) {
3462 cmd->meta.source->u.skb = rxb->skb;
3463 rxb->skb = NULL;
3464 } else if (cmd->meta.u.callback &&
3465 !cmd->meta.u.callback(priv, cmd, rxb->skb))
3466 rxb->skb = NULL;
3467
3468 iwl4965_tx_queue_reclaim(priv, txq_id, index);
3469
3470 if (!(cmd->meta.flags & CMD_ASYNC)) {
3471 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3472 wake_up_interruptible(&priv->wait_command_queue);
3473 }
3474 }
3475
3476 /************************** RX-FUNCTIONS ****************************/
3477 /*
3478 * Rx theory of operation
3479 *
3480 * Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs),
3481 * each of which point to Receive Buffers to be filled by 4965. These get
3482 * used not only for Rx frames, but for any command response or notification
3483 * from the 4965. The driver and 4965 manage the Rx buffers by means
3484 * of indexes into the circular buffer.
3485 *
3486 * Rx Queue Indexes
3487 * The host/firmware share two index registers for managing the Rx buffers.
3488 *
3489 * The READ index maps to the first position that the firmware may be writing
3490 * to -- the driver can read up to (but not including) this position and get
3491 * good data.
3492 * The READ index is managed by the firmware once the card is enabled.
3493 *
3494 * The WRITE index maps to the last position the driver has read from -- the
3495 * position preceding WRITE is the last slot the firmware can place a packet.
3496 *
3497 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3498 * WRITE = READ.
3499 *
3500 * During initialization, the host sets up the READ queue position to the first
3501 * INDEX position, and WRITE to the last (READ - 1 wrapped)
3502 *
3503 * When the firmware places a packet in a buffer, it will advance the READ index
3504 * and fire the RX interrupt. The driver can then query the READ index and
3505 * process as many packets as possible, moving the WRITE index forward as it
3506 * resets the Rx queue buffers with new memory.
3507 *
3508 * The management in the driver is as follows:
3509 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
3510 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
3511 * to replenish the iwl->rxq->rx_free.
3512 * + In iwl4965_rx_replenish (scheduled) if 'processed' != 'read' then the
3513 * iwl->rxq is replenished and the READ INDEX is updated (updating the
3514 * 'processed' and 'read' driver indexes as well)
3515 * + A received packet is processed and handed to the kernel network stack,
3516 * detached from the iwl->rxq. The driver 'processed' index is updated.
3517 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3518 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3519 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
3520 * were enough free buffers and RX_STALLED is set it is cleared.
3521 *
3522 *
3523 * Driver sequence:
3524 *
3525 * iwl4965_rx_queue_alloc() Allocates rx_free
3526 * iwl4965_rx_replenish() Replenishes rx_free list from rx_used, and calls
3527 * iwl4965_rx_queue_restock
3528 * iwl4965_rx_queue_restock() Moves available buffers from rx_free into Rx
3529 * queue, updates firmware pointers, and updates
3530 * the WRITE index. If insufficient rx_free buffers
3531 * are available, schedules iwl4965_rx_replenish
3532 *
3533 * -- enable interrupts --
3534 * ISR - iwl4965_rx() Detach iwl4965_rx_mem_buffers from pool up to the
3535 * READ INDEX, detaching the SKB from the pool.
3536 * Moves the packet buffer from queue to rx_used.
3537 * Calls iwl4965_rx_queue_restock to refill any empty
3538 * slots.
3539 * ...
3540 *
3541 */
3542
3543 /**
3544 * iwl4965_rx_queue_space - Return number of free slots available in queue.
3545 */
3546 static int iwl4965_rx_queue_space(const struct iwl4965_rx_queue *q)
3547 {
3548 int s = q->read - q->write;
3549 if (s <= 0)
3550 s += RX_QUEUE_SIZE;
3551 /* keep some buffer to not confuse full and empty queue */
3552 s -= 2;
3553 if (s < 0)
3554 s = 0;
3555 return s;
3556 }
3557
3558 /**
3559 * iwl4965_rx_queue_update_write_ptr - Update the write pointer for the RX queue
3560 */
3561 int iwl4965_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl4965_rx_queue *q)
3562 {
3563 u32 reg = 0;
3564 int rc = 0;
3565 unsigned long flags;
3566
3567 spin_lock_irqsave(&q->lock, flags);
3568
3569 if (q->need_update == 0)
3570 goto exit_unlock;
3571
3572 /* If power-saving is in use, make sure device is awake */
3573 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3574 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
3575
3576 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3577 iwl_set_bit(priv, CSR_GP_CNTRL,
3578 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3579 goto exit_unlock;
3580 }
3581
3582 rc = iwl_grab_nic_access(priv);
3583 if (rc)
3584 goto exit_unlock;
3585
3586 /* Device expects a multiple of 8 */
3587 iwl_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
3588 q->write & ~0x7);
3589 iwl_release_nic_access(priv);
3590
3591 /* Else device is assumed to be awake */
3592 } else
3593 /* Device expects a multiple of 8 */
3594 iwl_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
3595
3596
3597 q->need_update = 0;
3598
3599 exit_unlock:
3600 spin_unlock_irqrestore(&q->lock, flags);
3601 return rc;
3602 }
3603
3604 /**
3605 * iwl4965_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
3606 */
3607 static inline __le32 iwl4965_dma_addr2rbd_ptr(struct iwl_priv *priv,
3608 dma_addr_t dma_addr)
3609 {
3610 return cpu_to_le32((u32)(dma_addr >> 8));
3611 }
3612
3613
3614 /**
3615 * iwl4965_rx_queue_restock - refill RX queue from pre-allocated pool
3616 *
3617 * If there are slots in the RX queue that need to be restocked,
3618 * and we have free pre-allocated buffers, fill the ranks as much
3619 * as we can, pulling from rx_free.
3620 *
3621 * This moves the 'write' index forward to catch up with 'processed', and
3622 * also updates the memory address in the firmware to reference the new
3623 * target buffer.
3624 */
3625 static int iwl4965_rx_queue_restock(struct iwl_priv *priv)
3626 {
3627 struct iwl4965_rx_queue *rxq = &priv->rxq;
3628 struct list_head *element;
3629 struct iwl4965_rx_mem_buffer *rxb;
3630 unsigned long flags;
3631 int write, rc;
3632
3633 spin_lock_irqsave(&rxq->lock, flags);
3634 write = rxq->write & ~0x7;
3635 while ((iwl4965_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
3636 /* Get next free Rx buffer, remove from free list */
3637 element = rxq->rx_free.next;
3638 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
3639 list_del(element);
3640
3641 /* Point to Rx buffer via next RBD in circular buffer */
3642 rxq->bd[rxq->write] = iwl4965_dma_addr2rbd_ptr(priv, rxb->dma_addr);
3643 rxq->queue[rxq->write] = rxb;
3644 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
3645 rxq->free_count--;
3646 }
3647 spin_unlock_irqrestore(&rxq->lock, flags);
3648 /* If the pre-allocated buffer pool is dropping low, schedule to
3649 * refill it */
3650 if (rxq->free_count <= RX_LOW_WATERMARK)
3651 queue_work(priv->workqueue, &priv->rx_replenish);
3652
3653
3654 /* If we've added more space for the firmware to place data, tell it.
3655 * Increment device's write pointer in multiples of 8. */
3656 if ((write != (rxq->write & ~0x7))
3657 || (abs(rxq->write - rxq->read) > 7)) {
3658 spin_lock_irqsave(&rxq->lock, flags);
3659 rxq->need_update = 1;
3660 spin_unlock_irqrestore(&rxq->lock, flags);
3661 rc = iwl4965_rx_queue_update_write_ptr(priv, rxq);
3662 if (rc)
3663 return rc;
3664 }
3665
3666 return 0;
3667 }
3668
3669 /**
3670 * iwl4965_rx_replenish - Move all used packet from rx_used to rx_free
3671 *
3672 * When moving to rx_free an SKB is allocated for the slot.
3673 *
3674 * Also restock the Rx queue via iwl4965_rx_queue_restock.
3675 * This is called as a scheduled work item (except for during initialization)
3676 */
3677 static void iwl4965_rx_allocate(struct iwl_priv *priv)
3678 {
3679 struct iwl4965_rx_queue *rxq = &priv->rxq;
3680 struct list_head *element;
3681 struct iwl4965_rx_mem_buffer *rxb;
3682 unsigned long flags;
3683 spin_lock_irqsave(&rxq->lock, flags);
3684 while (!list_empty(&rxq->rx_used)) {
3685 element = rxq->rx_used.next;
3686 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
3687
3688 /* Alloc a new receive buffer */
3689 rxb->skb =
3690 alloc_skb(priv->hw_params.rx_buf_size,
3691 __GFP_NOWARN | GFP_ATOMIC);
3692 if (!rxb->skb) {
3693 if (net_ratelimit())
3694 printk(KERN_CRIT DRV_NAME
3695 ": Can not allocate SKB buffers\n");
3696 /* We don't reschedule replenish work here -- we will
3697 * call the restock method and if it still needs
3698 * more buffers it will schedule replenish */
3699 break;
3700 }
3701 priv->alloc_rxb_skb++;
3702 list_del(element);
3703
3704 /* Get physical address of RB/SKB */
3705 rxb->dma_addr =
3706 pci_map_single(priv->pci_dev, rxb->skb->data,
3707 priv->hw_params.rx_buf_size, PCI_DMA_FROMDEVICE);
3708 list_add_tail(&rxb->list, &rxq->rx_free);
3709 rxq->free_count++;
3710 }
3711 spin_unlock_irqrestore(&rxq->lock, flags);
3712 }
3713
3714 /*
3715 * this should be called while priv->lock is locked
3716 */
3717 static void __iwl4965_rx_replenish(void *data)
3718 {
3719 struct iwl_priv *priv = data;
3720
3721 iwl4965_rx_allocate(priv);
3722 iwl4965_rx_queue_restock(priv);
3723 }
3724
3725
3726 void iwl4965_rx_replenish(void *data)
3727 {
3728 struct iwl_priv *priv = data;
3729 unsigned long flags;
3730
3731 iwl4965_rx_allocate(priv);
3732
3733 spin_lock_irqsave(&priv->lock, flags);
3734 iwl4965_rx_queue_restock(priv);
3735 spin_unlock_irqrestore(&priv->lock, flags);
3736 }
3737
3738 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
3739 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
3740 * This free routine walks the list of POOL entries and if SKB is set to
3741 * non NULL it is unmapped and freed
3742 */
3743 static void iwl4965_rx_queue_free(struct iwl_priv *priv, struct iwl4965_rx_queue *rxq)
3744 {
3745 int i;
3746 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
3747 if (rxq->pool[i].skb != NULL) {
3748 pci_unmap_single(priv->pci_dev,
3749 rxq->pool[i].dma_addr,
3750 priv->hw_params.rx_buf_size,
3751 PCI_DMA_FROMDEVICE);
3752 dev_kfree_skb(rxq->pool[i].skb);
3753 }
3754 }
3755
3756 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
3757 rxq->dma_addr);
3758 rxq->bd = NULL;
3759 }
3760
3761 int iwl4965_rx_queue_alloc(struct iwl_priv *priv)
3762 {
3763 struct iwl4965_rx_queue *rxq = &priv->rxq;
3764 struct pci_dev *dev = priv->pci_dev;
3765 int i;
3766
3767 spin_lock_init(&rxq->lock);
3768 INIT_LIST_HEAD(&rxq->rx_free);
3769 INIT_LIST_HEAD(&rxq->rx_used);
3770
3771 /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
3772 rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
3773 if (!rxq->bd)
3774 return -ENOMEM;
3775
3776 /* Fill the rx_used queue with _all_ of the Rx buffers */
3777 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
3778 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3779
3780 /* Set us so that we have processed and used all buffers, but have
3781 * not restocked the Rx queue with fresh buffers */
3782 rxq->read = rxq->write = 0;
3783 rxq->free_count = 0;
3784 rxq->need_update = 0;
3785 return 0;
3786 }
3787
3788 void iwl4965_rx_queue_reset(struct iwl_priv *priv, struct iwl4965_rx_queue *rxq)
3789 {
3790 unsigned long flags;
3791 int i;
3792 spin_lock_irqsave(&rxq->lock, flags);
3793 INIT_LIST_HEAD(&rxq->rx_free);
3794 INIT_LIST_HEAD(&rxq->rx_used);
3795 /* Fill the rx_used queue with _all_ of the Rx buffers */
3796 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
3797 /* In the reset function, these buffers may have been allocated
3798 * to an SKB, so we need to unmap and free potential storage */
3799 if (rxq->pool[i].skb != NULL) {
3800 pci_unmap_single(priv->pci_dev,
3801 rxq->pool[i].dma_addr,
3802 priv->hw_params.rx_buf_size,
3803 PCI_DMA_FROMDEVICE);
3804 priv->alloc_rxb_skb--;
3805 dev_kfree_skb(rxq->pool[i].skb);
3806 rxq->pool[i].skb = NULL;
3807 }
3808 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3809 }
3810
3811 /* Set us so that we have processed and used all buffers, but have
3812 * not restocked the Rx queue with fresh buffers */
3813 rxq->read = rxq->write = 0;
3814 rxq->free_count = 0;
3815 spin_unlock_irqrestore(&rxq->lock, flags);
3816 }
3817
3818 /* Convert linear signal-to-noise ratio into dB */
3819 static u8 ratio2dB[100] = {
3820 /* 0 1 2 3 4 5 6 7 8 9 */
3821 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
3822 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
3823 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
3824 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
3825 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
3826 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
3827 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
3828 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
3829 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
3830 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
3831 };
3832
3833 /* Calculates a relative dB value from a ratio of linear
3834 * (i.e. not dB) signal levels.
3835 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
3836 int iwl4965_calc_db_from_ratio(int sig_ratio)
3837 {
3838 /* 1000:1 or higher just report as 60 dB */
3839 if (sig_ratio >= 1000)
3840 return 60;
3841
3842 /* 100:1 or higher, divide by 10 and use table,
3843 * add 20 dB to make up for divide by 10 */
3844 if (sig_ratio >= 100)
3845 return (20 + (int)ratio2dB[sig_ratio/10]);
3846
3847 /* We shouldn't see this */
3848 if (sig_ratio < 1)
3849 return 0;
3850
3851 /* Use table for ratios 1:1 - 99:1 */
3852 return (int)ratio2dB[sig_ratio];
3853 }
3854
3855 #define PERFECT_RSSI (-20) /* dBm */
3856 #define WORST_RSSI (-95) /* dBm */
3857 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
3858
3859 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
3860 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
3861 * about formulas used below. */
3862 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
3863 {
3864 int sig_qual;
3865 int degradation = PERFECT_RSSI - rssi_dbm;
3866
3867 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
3868 * as indicator; formula is (signal dbm - noise dbm).
3869 * SNR at or above 40 is a great signal (100%).
3870 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
3871 * Weakest usable signal is usually 10 - 15 dB SNR. */
3872 if (noise_dbm) {
3873 if (rssi_dbm - noise_dbm >= 40)
3874 return 100;
3875 else if (rssi_dbm < noise_dbm)
3876 return 0;
3877 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
3878
3879 /* Else use just the signal level.
3880 * This formula is a least squares fit of data points collected and
3881 * compared with a reference system that had a percentage (%) display
3882 * for signal quality. */
3883 } else
3884 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
3885 (15 * RSSI_RANGE + 62 * degradation)) /
3886 (RSSI_RANGE * RSSI_RANGE);
3887
3888 if (sig_qual > 100)
3889 sig_qual = 100;
3890 else if (sig_qual < 1)
3891 sig_qual = 0;
3892
3893 return sig_qual;
3894 }
3895
3896 /**
3897 * iwl4965_rx_handle - Main entry function for receiving responses from uCode
3898 *
3899 * Uses the priv->rx_handlers callback function array to invoke
3900 * the appropriate handlers, including command responses,
3901 * frame-received notifications, and other notifications.
3902 */
3903 static void iwl4965_rx_handle(struct iwl_priv *priv)
3904 {
3905 struct iwl4965_rx_mem_buffer *rxb;
3906 struct iwl4965_rx_packet *pkt;
3907 struct iwl4965_rx_queue *rxq = &priv->rxq;
3908 u32 r, i;
3909 int reclaim;
3910 unsigned long flags;
3911 u8 fill_rx = 0;
3912 u32 count = 8;
3913
3914 /* uCode's read index (stored in shared DRAM) indicates the last Rx
3915 * buffer that the driver may process (last buffer filled by ucode). */
3916 r = iwl4965_hw_get_rx_read(priv);
3917 i = rxq->read;
3918
3919 /* Rx interrupt, but nothing sent from uCode */
3920 if (i == r)
3921 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
3922
3923 if (iwl4965_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
3924 fill_rx = 1;
3925
3926 while (i != r) {
3927 rxb = rxq->queue[i];
3928
3929 /* If an RXB doesn't have a Rx queue slot associated with it,
3930 * then a bug has been introduced in the queue refilling
3931 * routines -- catch it here */
3932 BUG_ON(rxb == NULL);
3933
3934 rxq->queue[i] = NULL;
3935
3936 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
3937 priv->hw_params.rx_buf_size,
3938 PCI_DMA_FROMDEVICE);
3939 pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
3940
3941 /* Reclaim a command buffer only if this packet is a response
3942 * to a (driver-originated) command.
3943 * If the packet (e.g. Rx frame) originated from uCode,
3944 * there is no command buffer to reclaim.
3945 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
3946 * but apparently a few don't get set; catch them here. */
3947 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
3948 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
3949 (pkt->hdr.cmd != REPLY_RX) &&
3950 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
3951 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
3952 (pkt->hdr.cmd != REPLY_TX);
3953
3954 /* Based on type of command response or notification,
3955 * handle those that need handling via function in
3956 * rx_handlers table. See iwl4965_setup_rx_handlers() */
3957 if (priv->rx_handlers[pkt->hdr.cmd]) {
3958 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
3959 "r = %d, i = %d, %s, 0x%02x\n", r, i,
3960 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
3961 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
3962 } else {
3963 /* No handling needed */
3964 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
3965 "r %d i %d No handler needed for %s, 0x%02x\n",
3966 r, i, get_cmd_string(pkt->hdr.cmd),
3967 pkt->hdr.cmd);
3968 }
3969
3970 if (reclaim) {
3971 /* Invoke any callbacks, transfer the skb to caller, and
3972 * fire off the (possibly) blocking iwl_send_cmd()
3973 * as we reclaim the driver command queue */
3974 if (rxb && rxb->skb)
3975 iwl4965_tx_cmd_complete(priv, rxb);
3976 else
3977 IWL_WARNING("Claim null rxb?\n");
3978 }
3979
3980 /* For now we just don't re-use anything. We can tweak this
3981 * later to try and re-use notification packets and SKBs that
3982 * fail to Rx correctly */
3983 if (rxb->skb != NULL) {
3984 priv->alloc_rxb_skb--;
3985 dev_kfree_skb_any(rxb->skb);
3986 rxb->skb = NULL;
3987 }
3988
3989 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
3990 priv->hw_params.rx_buf_size,
3991 PCI_DMA_FROMDEVICE);
3992 spin_lock_irqsave(&rxq->lock, flags);
3993 list_add_tail(&rxb->list, &priv->rxq.rx_used);
3994 spin_unlock_irqrestore(&rxq->lock, flags);
3995 i = (i + 1) & RX_QUEUE_MASK;
3996 /* If there are a lot of unused frames,
3997 * restock the Rx queue so ucode wont assert. */
3998 if (fill_rx) {
3999 count++;
4000 if (count >= 8) {
4001 priv->rxq.read = i;
4002 __iwl4965_rx_replenish(priv);
4003 count = 0;
4004 }
4005 }
4006 }
4007
4008 /* Backtrack one entry */
4009 priv->rxq.read = i;
4010 iwl4965_rx_queue_restock(priv);
4011 }
4012
4013 /**
4014 * iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
4015 */
4016 static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv,
4017 struct iwl4965_tx_queue *txq)
4018 {
4019 u32 reg = 0;
4020 int rc = 0;
4021 int txq_id = txq->q.id;
4022
4023 if (txq->need_update == 0)
4024 return rc;
4025
4026 /* if we're trying to save power */
4027 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4028 /* wake up nic if it's powered down ...
4029 * uCode will wake up, and interrupt us again, so next
4030 * time we'll skip this part. */
4031 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
4032
4033 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4034 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4035 iwl_set_bit(priv, CSR_GP_CNTRL,
4036 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4037 return rc;
4038 }
4039
4040 /* restore this queue's parameters in nic hardware. */
4041 rc = iwl_grab_nic_access(priv);
4042 if (rc)
4043 return rc;
4044 iwl_write_direct32(priv, HBUS_TARG_WRPTR,
4045 txq->q.write_ptr | (txq_id << 8));
4046 iwl_release_nic_access(priv);
4047
4048 /* else not in power-save mode, uCode will never sleep when we're
4049 * trying to tx (during RFKILL, we're not trying to tx). */
4050 } else
4051 iwl_write32(priv, HBUS_TARG_WRPTR,
4052 txq->q.write_ptr | (txq_id << 8));
4053
4054 txq->need_update = 0;
4055
4056 return rc;
4057 }
4058
4059 #ifdef CONFIG_IWLWIFI_DEBUG
4060 static void iwl4965_print_rx_config_cmd(struct iwl4965_rxon_cmd *rxon)
4061 {
4062 DECLARE_MAC_BUF(mac);
4063
4064 IWL_DEBUG_RADIO("RX CONFIG:\n");
4065 iwl_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4066 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4067 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4068 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4069 le32_to_cpu(rxon->filter_flags));
4070 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4071 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4072 rxon->ofdm_basic_rates);
4073 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4074 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4075 print_mac(mac, rxon->node_addr));
4076 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4077 print_mac(mac, rxon->bssid_addr));
4078 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4079 }
4080 #endif
4081
4082 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
4083 {
4084 IWL_DEBUG_ISR("Enabling interrupts\n");
4085 set_bit(STATUS_INT_ENABLED, &priv->status);
4086 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4087 }
4088
4089 /* call this function to flush any scheduled tasklet */
4090 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
4091 {
4092 /* wait to make sure we flush pedding tasklet*/
4093 synchronize_irq(priv->pci_dev->irq);
4094 tasklet_kill(&priv->irq_tasklet);
4095 }
4096
4097 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
4098 {
4099 clear_bit(STATUS_INT_ENABLED, &priv->status);
4100
4101 /* disable interrupts from uCode/NIC to host */
4102 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
4103
4104 /* acknowledge/clear/reset any interrupts still pending
4105 * from uCode or flow handler (Rx/Tx DMA) */
4106 iwl_write32(priv, CSR_INT, 0xffffffff);
4107 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4108 IWL_DEBUG_ISR("Disabled interrupts\n");
4109 }
4110
4111 static const char *desc_lookup(int i)
4112 {
4113 switch (i) {
4114 case 1:
4115 return "FAIL";
4116 case 2:
4117 return "BAD_PARAM";
4118 case 3:
4119 return "BAD_CHECKSUM";
4120 case 4:
4121 return "NMI_INTERRUPT";
4122 case 5:
4123 return "SYSASSERT";
4124 case 6:
4125 return "FATAL_ERROR";
4126 }
4127
4128 return "UNKNOWN";
4129 }
4130
4131 #define ERROR_START_OFFSET (1 * sizeof(u32))
4132 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
4133
4134 static void iwl4965_dump_nic_error_log(struct iwl_priv *priv)
4135 {
4136 u32 data2, line;
4137 u32 desc, time, count, base, data1;
4138 u32 blink1, blink2, ilink1, ilink2;
4139 int rc;
4140
4141 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4142
4143 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
4144 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4145 return;
4146 }
4147
4148 rc = iwl_grab_nic_access(priv);
4149 if (rc) {
4150 IWL_WARNING("Can not read from adapter at this time.\n");
4151 return;
4152 }
4153
4154 count = iwl_read_targ_mem(priv, base);
4155
4156 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4157 IWL_ERROR("Start IWL Error Log Dump:\n");
4158 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
4159 }
4160
4161 desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
4162 blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
4163 blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
4164 ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
4165 ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
4166 data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
4167 data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
4168 line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
4169 time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
4170
4171 IWL_ERROR("Desc Time "
4172 "data1 data2 line\n");
4173 IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4174 desc_lookup(desc), desc, time, data1, data2, line);
4175 IWL_ERROR("blink1 blink2 ilink1 ilink2\n");
4176 IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
4177 ilink1, ilink2);
4178
4179 iwl_release_nic_access(priv);
4180 }
4181
4182 #define EVENT_START_OFFSET (4 * sizeof(u32))
4183
4184 /**
4185 * iwl4965_print_event_log - Dump error event log to syslog
4186 *
4187 * NOTE: Must be called with iwl_grab_nic_access() already obtained!
4188 */
4189 static void iwl4965_print_event_log(struct iwl_priv *priv, u32 start_idx,
4190 u32 num_events, u32 mode)
4191 {
4192 u32 i;
4193 u32 base; /* SRAM byte address of event log header */
4194 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4195 u32 ptr; /* SRAM byte address of log data */
4196 u32 ev, time, data; /* event log data */
4197
4198 if (num_events == 0)
4199 return;
4200
4201 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4202
4203 if (mode == 0)
4204 event_size = 2 * sizeof(u32);
4205 else
4206 event_size = 3 * sizeof(u32);
4207
4208 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4209
4210 /* "time" is actually "data" for mode 0 (no timestamp).
4211 * place event id # at far right for easier visual parsing. */
4212 for (i = 0; i < num_events; i++) {
4213 ev = iwl_read_targ_mem(priv, ptr);
4214 ptr += sizeof(u32);
4215 time = iwl_read_targ_mem(priv, ptr);
4216 ptr += sizeof(u32);
4217 if (mode == 0)
4218 IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4219 else {
4220 data = iwl_read_targ_mem(priv, ptr);
4221 ptr += sizeof(u32);
4222 IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4223 }
4224 }
4225 }
4226
4227 static void iwl4965_dump_nic_event_log(struct iwl_priv *priv)
4228 {
4229 int rc;
4230 u32 base; /* SRAM byte address of event log header */
4231 u32 capacity; /* event log capacity in # entries */
4232 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
4233 u32 num_wraps; /* # times uCode wrapped to top of log */
4234 u32 next_entry; /* index of next entry to be written by uCode */
4235 u32 size; /* # entries that we'll print */
4236
4237 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4238 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
4239 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4240 return;
4241 }
4242
4243 rc = iwl_grab_nic_access(priv);
4244 if (rc) {
4245 IWL_WARNING("Can not read from adapter at this time.\n");
4246 return;
4247 }
4248
4249 /* event log header */
4250 capacity = iwl_read_targ_mem(priv, base);
4251 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
4252 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
4253 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
4254
4255 size = num_wraps ? capacity : next_entry;
4256
4257 /* bail out if nothing in log */
4258 if (size == 0) {
4259 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4260 iwl_release_nic_access(priv);
4261 return;
4262 }
4263
4264 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4265 size, num_wraps);
4266
4267 /* if uCode has wrapped back to top of log, start at the oldest entry,
4268 * i.e the next one that uCode would fill. */
4269 if (num_wraps)
4270 iwl4965_print_event_log(priv, next_entry,
4271 capacity - next_entry, mode);
4272
4273 /* (then/else) start at top of log */
4274 iwl4965_print_event_log(priv, 0, next_entry, mode);
4275
4276 iwl_release_nic_access(priv);
4277 }
4278
4279 /**
4280 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
4281 */
4282 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
4283 {
4284 /* Set the FW error flag -- cleared on iwl4965_down */
4285 set_bit(STATUS_FW_ERROR, &priv->status);
4286
4287 /* Cancel currently queued command. */
4288 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4289
4290 #ifdef CONFIG_IWLWIFI_DEBUG
4291 if (iwl_debug_level & IWL_DL_FW_ERRORS) {
4292 iwl4965_dump_nic_error_log(priv);
4293 iwl4965_dump_nic_event_log(priv);
4294 iwl4965_print_rx_config_cmd(&priv->staging_rxon);
4295 }
4296 #endif
4297
4298 wake_up_interruptible(&priv->wait_command_queue);
4299
4300 /* Keep the restart process from trying to send host
4301 * commands by clearing the INIT status bit */
4302 clear_bit(STATUS_READY, &priv->status);
4303
4304 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4305 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4306 "Restarting adapter due to uCode error.\n");
4307
4308 if (iwl_is_associated(priv)) {
4309 memcpy(&priv->recovery_rxon, &priv->active_rxon,
4310 sizeof(priv->recovery_rxon));
4311 priv->error_recovering = 1;
4312 }
4313 queue_work(priv->workqueue, &priv->restart);
4314 }
4315 }
4316
4317 static void iwl4965_error_recovery(struct iwl_priv *priv)
4318 {
4319 unsigned long flags;
4320
4321 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4322 sizeof(priv->staging_rxon));
4323 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4324 iwl4965_commit_rxon(priv);
4325
4326 iwl4965_rxon_add_station(priv, priv->bssid, 1);
4327
4328 spin_lock_irqsave(&priv->lock, flags);
4329 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4330 priv->error_recovering = 0;
4331 spin_unlock_irqrestore(&priv->lock, flags);
4332 }
4333
4334 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
4335 {
4336 u32 inta, handled = 0;
4337 u32 inta_fh;
4338 unsigned long flags;
4339 #ifdef CONFIG_IWLWIFI_DEBUG
4340 u32 inta_mask;
4341 #endif
4342
4343 spin_lock_irqsave(&priv->lock, flags);
4344
4345 /* Ack/clear/reset pending uCode interrupts.
4346 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4347 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
4348 inta = iwl_read32(priv, CSR_INT);
4349 iwl_write32(priv, CSR_INT, inta);
4350
4351 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4352 * Any new interrupts that happen after this, either while we're
4353 * in this tasklet, or later, will show up in next ISR/tasklet. */
4354 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4355 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4356
4357 #ifdef CONFIG_IWLWIFI_DEBUG
4358 if (iwl_debug_level & IWL_DL_ISR) {
4359 /* just for debug */
4360 inta_mask = iwl_read32(priv, CSR_INT_MASK);
4361 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4362 inta, inta_mask, inta_fh);
4363 }
4364 #endif
4365
4366 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4367 * atomic, make sure that inta covers all the interrupts that
4368 * we've discovered, even if FH interrupt came in just after
4369 * reading CSR_INT. */
4370 if (inta_fh & CSR49_FH_INT_RX_MASK)
4371 inta |= CSR_INT_BIT_FH_RX;
4372 if (inta_fh & CSR49_FH_INT_TX_MASK)
4373 inta |= CSR_INT_BIT_FH_TX;
4374
4375 /* Now service all interrupt bits discovered above. */
4376 if (inta & CSR_INT_BIT_HW_ERR) {
4377 IWL_ERROR("Microcode HW error detected. Restarting.\n");
4378
4379 /* Tell the device to stop sending interrupts */
4380 iwl4965_disable_interrupts(priv);
4381
4382 iwl4965_irq_handle_error(priv);
4383
4384 handled |= CSR_INT_BIT_HW_ERR;
4385
4386 spin_unlock_irqrestore(&priv->lock, flags);
4387
4388 return;
4389 }
4390
4391 #ifdef CONFIG_IWLWIFI_DEBUG
4392 if (iwl_debug_level & (IWL_DL_ISR)) {
4393 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4394 if (inta & CSR_INT_BIT_SCD)
4395 IWL_DEBUG_ISR("Scheduler finished to transmit "
4396 "the frame/frames.\n");
4397
4398 /* Alive notification via Rx interrupt will do the real work */
4399 if (inta & CSR_INT_BIT_ALIVE)
4400 IWL_DEBUG_ISR("Alive interrupt\n");
4401 }
4402 #endif
4403 /* Safely ignore these bits for debug checks below */
4404 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
4405
4406 /* HW RF KILL switch toggled */
4407 if (inta & CSR_INT_BIT_RF_KILL) {
4408 int hw_rf_kill = 0;
4409 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
4410 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
4411 hw_rf_kill = 1;
4412
4413 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
4414 "RF_KILL bit toggled to %s.\n",
4415 hw_rf_kill ? "disable radio":"enable radio");
4416
4417 /* Queue restart only if RF_KILL switch was set to "kill"
4418 * when we loaded driver, and is now set to "enable".
4419 * After we're Alive, RF_KILL gets handled by
4420 * iwl4965_rx_card_state_notif() */
4421 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
4422 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4423 queue_work(priv->workqueue, &priv->restart);
4424 }
4425
4426 handled |= CSR_INT_BIT_RF_KILL;
4427 }
4428
4429 /* Chip got too hot and stopped itself */
4430 if (inta & CSR_INT_BIT_CT_KILL) {
4431 IWL_ERROR("Microcode CT kill error detected.\n");
4432 handled |= CSR_INT_BIT_CT_KILL;
4433 }
4434
4435 /* Error detected by uCode */
4436 if (inta & CSR_INT_BIT_SW_ERR) {
4437 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
4438 inta);
4439 iwl4965_irq_handle_error(priv);
4440 handled |= CSR_INT_BIT_SW_ERR;
4441 }
4442
4443 /* uCode wakes up after power-down sleep */
4444 if (inta & CSR_INT_BIT_WAKEUP) {
4445 IWL_DEBUG_ISR("Wakeup interrupt\n");
4446 iwl4965_rx_queue_update_write_ptr(priv, &priv->rxq);
4447 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]);
4448 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]);
4449 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]);
4450 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]);
4451 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]);
4452 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]);
4453
4454 handled |= CSR_INT_BIT_WAKEUP;
4455 }
4456
4457 /* All uCode command responses, including Tx command responses,
4458 * Rx "responses" (frame-received notification), and other
4459 * notifications from uCode come through here*/
4460 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
4461 iwl4965_rx_handle(priv);
4462 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
4463 }
4464
4465 if (inta & CSR_INT_BIT_FH_TX) {
4466 IWL_DEBUG_ISR("Tx interrupt\n");
4467 handled |= CSR_INT_BIT_FH_TX;
4468 }
4469
4470 if (inta & ~handled)
4471 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
4472
4473 if (inta & ~CSR_INI_SET_MASK) {
4474 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
4475 inta & ~CSR_INI_SET_MASK);
4476 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
4477 }
4478
4479 /* Re-enable all interrupts */
4480 /* only Re-enable if diabled by irq */
4481 if (test_bit(STATUS_INT_ENABLED, &priv->status))
4482 iwl4965_enable_interrupts(priv);
4483
4484 #ifdef CONFIG_IWLWIFI_DEBUG
4485 if (iwl_debug_level & (IWL_DL_ISR)) {
4486 inta = iwl_read32(priv, CSR_INT);
4487 inta_mask = iwl_read32(priv, CSR_INT_MASK);
4488 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4489 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4490 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
4491 }
4492 #endif
4493 spin_unlock_irqrestore(&priv->lock, flags);
4494 }
4495
4496 static irqreturn_t iwl4965_isr(int irq, void *data)
4497 {
4498 struct iwl_priv *priv = data;
4499 u32 inta, inta_mask;
4500 u32 inta_fh;
4501 if (!priv)
4502 return IRQ_NONE;
4503
4504 spin_lock(&priv->lock);
4505
4506 /* Disable (but don't clear!) interrupts here to avoid
4507 * back-to-back ISRs and sporadic interrupts from our NIC.
4508 * If we have something to service, the tasklet will re-enable ints.
4509 * If we *don't* have something, we'll re-enable before leaving here. */
4510 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
4511 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
4512
4513 /* Discover which interrupts are active/pending */
4514 inta = iwl_read32(priv, CSR_INT);
4515 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4516
4517 /* Ignore interrupt if there's nothing in NIC to service.
4518 * This may be due to IRQ shared with another device,
4519 * or due to sporadic interrupts thrown from our NIC. */
4520 if (!inta && !inta_fh) {
4521 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4522 goto none;
4523 }
4524
4525 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
4526 /* Hardware disappeared. It might have already raised
4527 * an interrupt */
4528 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
4529 goto unplugged;
4530 }
4531
4532 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4533 inta, inta_mask, inta_fh);
4534
4535 inta &= ~CSR_INT_BIT_SCD;
4536
4537 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
4538 if (likely(inta || inta_fh))
4539 tasklet_schedule(&priv->irq_tasklet);
4540
4541 unplugged:
4542 spin_unlock(&priv->lock);
4543 return IRQ_HANDLED;
4544
4545 none:
4546 /* re-enable interrupts here since we don't have anything to service. */
4547 /* only Re-enable if diabled by irq */
4548 if (test_bit(STATUS_INT_ENABLED, &priv->status))
4549 iwl4965_enable_interrupts(priv);
4550 spin_unlock(&priv->lock);
4551 return IRQ_NONE;
4552 }
4553
4554 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
4555 * sending probe req. This should be set long enough to hear probe responses
4556 * from more than one AP. */
4557 #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
4558 #define IWL_ACTIVE_DWELL_TIME_52 (10)
4559
4560 /* For faster active scanning, scan will move to the next channel if fewer than
4561 * PLCP_QUIET_THRESH packets are heard on this channel within
4562 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
4563 * time if it's a quiet channel (nothing responded to our probe, and there's
4564 * no other traffic).
4565 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
4566 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
4567 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
4568
4569 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
4570 * Must be set longer than active dwell time.
4571 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
4572 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
4573 #define IWL_PASSIVE_DWELL_TIME_52 (10)
4574 #define IWL_PASSIVE_DWELL_BASE (100)
4575 #define IWL_CHANNEL_TUNE_TIME 5
4576
4577 static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
4578 enum ieee80211_band band)
4579 {
4580 if (band == IEEE80211_BAND_5GHZ)
4581 return IWL_ACTIVE_DWELL_TIME_52;
4582 else
4583 return IWL_ACTIVE_DWELL_TIME_24;
4584 }
4585
4586 static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
4587 enum ieee80211_band band)
4588 {
4589 u16 active = iwl4965_get_active_dwell_time(priv, band);
4590 u16 passive = (band != IEEE80211_BAND_5GHZ) ?
4591 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
4592 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
4593
4594 if (iwl_is_associated(priv)) {
4595 /* If we're associated, we clamp the maximum passive
4596 * dwell time to be 98% of the beacon interval (minus
4597 * 2 * channel tune time) */
4598 passive = priv->beacon_int;
4599 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
4600 passive = IWL_PASSIVE_DWELL_BASE;
4601 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
4602 }
4603
4604 if (passive <= active)
4605 passive = active + 1;
4606
4607 return passive;
4608 }
4609
4610 static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
4611 enum ieee80211_band band,
4612 u8 is_active, u8 direct_mask,
4613 struct iwl4965_scan_channel *scan_ch)
4614 {
4615 const struct ieee80211_channel *channels = NULL;
4616 const struct ieee80211_supported_band *sband;
4617 const struct iwl_channel_info *ch_info;
4618 u16 passive_dwell = 0;
4619 u16 active_dwell = 0;
4620 int added, i;
4621
4622 sband = iwl4965_get_hw_mode(priv, band);
4623 if (!sband)
4624 return 0;
4625
4626 channels = sband->channels;
4627
4628 active_dwell = iwl4965_get_active_dwell_time(priv, band);
4629 passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
4630
4631 for (i = 0, added = 0; i < sband->n_channels; i++) {
4632 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
4633 continue;
4634
4635 if (ieee80211_frequency_to_channel(channels[i].center_freq) ==
4636 le16_to_cpu(priv->active_rxon.channel)) {
4637 if (iwl_is_associated(priv)) {
4638 IWL_DEBUG_SCAN
4639 ("Skipping current channel %d\n",
4640 le16_to_cpu(priv->active_rxon.channel));
4641 continue;
4642 }
4643 } else if (priv->only_active_channel)
4644 continue;
4645
4646 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
4647
4648 ch_info = iwl_get_channel_info(priv, band,
4649 scan_ch->channel);
4650 if (!is_channel_valid(ch_info)) {
4651 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
4652 scan_ch->channel);
4653 continue;
4654 }
4655
4656 if (!is_active || is_channel_passive(ch_info) ||
4657 (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
4658 scan_ch->type = 0; /* passive */
4659 else
4660 scan_ch->type = 1; /* active */
4661
4662 if (scan_ch->type & 1)
4663 scan_ch->type |= (direct_mask << 1);
4664
4665 if (is_channel_narrow(ch_info))
4666 scan_ch->type |= (1 << 7);
4667
4668 scan_ch->active_dwell = cpu_to_le16(active_dwell);
4669 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
4670
4671 /* Set txpower levels to defaults */
4672 scan_ch->tpc.dsp_atten = 110;
4673 /* scan_pwr_info->tpc.dsp_atten; */
4674
4675 /*scan_pwr_info->tpc.tx_gain; */
4676 if (band == IEEE80211_BAND_5GHZ)
4677 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
4678 else {
4679 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
4680 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
4681 * power level:
4682 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
4683 */
4684 }
4685
4686 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
4687 scan_ch->channel,
4688 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
4689 (scan_ch->type & 1) ?
4690 active_dwell : passive_dwell);
4691
4692 scan_ch++;
4693 added++;
4694 }
4695
4696 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
4697 return added;
4698 }
4699
4700 static void iwl4965_init_hw_rates(struct iwl_priv *priv,
4701 struct ieee80211_rate *rates)
4702 {
4703 int i;
4704
4705 for (i = 0; i < IWL_RATE_COUNT; i++) {
4706 rates[i].bitrate = iwl4965_rates[i].ieee * 5;
4707 rates[i].hw_value = i; /* Rate scaling will work on indexes */
4708 rates[i].hw_value_short = i;
4709 rates[i].flags = 0;
4710 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
4711 /*
4712 * If CCK != 1M then set short preamble rate flag.
4713 */
4714 rates[i].flags |=
4715 (iwl4965_rates[i].plcp == IWL_RATE_1M_PLCP) ?
4716 0 : IEEE80211_RATE_SHORT_PREAMBLE;
4717 }
4718 }
4719 }
4720
4721 /**
4722 * iwl4965_init_geos - Initialize mac80211's geo/channel info based from eeprom
4723 */
4724 int iwl4965_init_geos(struct iwl_priv *priv)
4725 {
4726 struct iwl_channel_info *ch;
4727 struct ieee80211_supported_band *sband;
4728 struct ieee80211_channel *channels;
4729 struct ieee80211_channel *geo_ch;
4730 struct ieee80211_rate *rates;
4731 int i = 0;
4732
4733 if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
4734 priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
4735 IWL_DEBUG_INFO("Geography modes already initialized.\n");
4736 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4737 return 0;
4738 }
4739
4740 channels = kzalloc(sizeof(struct ieee80211_channel) *
4741 priv->channel_count, GFP_KERNEL);
4742 if (!channels)
4743 return -ENOMEM;
4744
4745 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
4746 GFP_KERNEL);
4747 if (!rates) {
4748 kfree(channels);
4749 return -ENOMEM;
4750 }
4751
4752 /* 5.2GHz channels start after the 2.4GHz channels */
4753 sband = &priv->bands[IEEE80211_BAND_5GHZ];
4754 sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
4755 /* just OFDM */
4756 sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
4757 sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
4758
4759 iwl4965_init_ht_hw_capab(priv, &sband->ht_info, IEEE80211_BAND_5GHZ);
4760
4761 sband = &priv->bands[IEEE80211_BAND_2GHZ];
4762 sband->channels = channels;
4763 /* OFDM & CCK */
4764 sband->bitrates = rates;
4765 sband->n_bitrates = IWL_RATE_COUNT;
4766
4767 iwl4965_init_ht_hw_capab(priv, &sband->ht_info, IEEE80211_BAND_2GHZ);
4768
4769 priv->ieee_channels = channels;
4770 priv->ieee_rates = rates;
4771
4772 iwl4965_init_hw_rates(priv, rates);
4773
4774 for (i = 0; i < priv->channel_count; i++) {
4775 ch = &priv->channel_info[i];
4776
4777 /* FIXME: might be removed if scan is OK */
4778 if (!is_channel_valid(ch))
4779 continue;
4780
4781 if (is_channel_a_band(ch))
4782 sband = &priv->bands[IEEE80211_BAND_5GHZ];
4783 else
4784 sband = &priv->bands[IEEE80211_BAND_2GHZ];
4785
4786 geo_ch = &sband->channels[sband->n_channels++];
4787
4788 geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
4789 geo_ch->max_power = ch->max_power_avg;
4790 geo_ch->max_antenna_gain = 0xff;
4791 geo_ch->hw_value = ch->channel;
4792
4793 if (is_channel_valid(ch)) {
4794 if (!(ch->flags & EEPROM_CHANNEL_IBSS))
4795 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
4796
4797 if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
4798 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
4799
4800 if (ch->flags & EEPROM_CHANNEL_RADAR)
4801 geo_ch->flags |= IEEE80211_CHAN_RADAR;
4802
4803 if (ch->max_power_avg > priv->max_channel_txpower_limit)
4804 priv->max_channel_txpower_limit =
4805 ch->max_power_avg;
4806 } else {
4807 geo_ch->flags |= IEEE80211_CHAN_DISABLED;
4808 }
4809
4810 /* Save flags for reg domain usage */
4811 geo_ch->orig_flags = geo_ch->flags;
4812
4813 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
4814 ch->channel, geo_ch->center_freq,
4815 is_channel_a_band(ch) ? "5.2" : "2.4",
4816 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
4817 "restricted" : "valid",
4818 geo_ch->flags);
4819 }
4820
4821 if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
4822 priv->cfg->sku & IWL_SKU_A) {
4823 printk(KERN_INFO DRV_NAME
4824 ": Incorrectly detected BG card as ABG. Please send "
4825 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
4826 priv->pci_dev->device, priv->pci_dev->subsystem_device);
4827 priv->cfg->sku &= ~IWL_SKU_A;
4828 }
4829
4830 printk(KERN_INFO DRV_NAME
4831 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
4832 priv->bands[IEEE80211_BAND_2GHZ].n_channels,
4833 priv->bands[IEEE80211_BAND_5GHZ].n_channels);
4834
4835 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
4836 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
4837 &priv->bands[IEEE80211_BAND_2GHZ];
4838 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
4839 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
4840 &priv->bands[IEEE80211_BAND_5GHZ];
4841
4842 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4843
4844 return 0;
4845 }
4846
4847 /*
4848 * iwl4965_free_geos - undo allocations in iwl4965_init_geos
4849 */
4850 void iwl4965_free_geos(struct iwl_priv *priv)
4851 {
4852 kfree(priv->ieee_channels);
4853 kfree(priv->ieee_rates);
4854 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
4855 }
4856
4857 /******************************************************************************
4858 *
4859 * uCode download functions
4860 *
4861 ******************************************************************************/
4862
4863 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
4864 {
4865 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
4866 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
4867 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
4868 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
4869 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
4870 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
4871 }
4872
4873 /**
4874 * iwl4965_verify_inst_full - verify runtime uCode image in card vs. host,
4875 * looking at all data.
4876 */
4877 static int iwl4965_verify_inst_full(struct iwl_priv *priv, __le32 *image,
4878 u32 len)
4879 {
4880 u32 val;
4881 u32 save_len = len;
4882 int rc = 0;
4883 u32 errcnt;
4884
4885 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
4886
4887 rc = iwl_grab_nic_access(priv);
4888 if (rc)
4889 return rc;
4890
4891 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
4892
4893 errcnt = 0;
4894 for (; len > 0; len -= sizeof(u32), image++) {
4895 /* read data comes through single port, auto-incr addr */
4896 /* NOTE: Use the debugless read so we don't flood kernel log
4897 * if IWL_DL_IO is set */
4898 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
4899 if (val != le32_to_cpu(*image)) {
4900 IWL_ERROR("uCode INST section is invalid at "
4901 "offset 0x%x, is 0x%x, s/b 0x%x\n",
4902 save_len - len, val, le32_to_cpu(*image));
4903 rc = -EIO;
4904 errcnt++;
4905 if (errcnt >= 20)
4906 break;
4907 }
4908 }
4909
4910 iwl_release_nic_access(priv);
4911
4912 if (!errcnt)
4913 IWL_DEBUG_INFO
4914 ("ucode image in INSTRUCTION memory is good\n");
4915
4916 return rc;
4917 }
4918
4919
4920 /**
4921 * iwl4965_verify_inst_sparse - verify runtime uCode image in card vs. host,
4922 * using sample data 100 bytes apart. If these sample points are good,
4923 * it's a pretty good bet that everything between them is good, too.
4924 */
4925 static int iwl4965_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
4926 {
4927 u32 val;
4928 int rc = 0;
4929 u32 errcnt = 0;
4930 u32 i;
4931
4932 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
4933
4934 rc = iwl_grab_nic_access(priv);
4935 if (rc)
4936 return rc;
4937
4938 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
4939 /* read data comes through single port, auto-incr addr */
4940 /* NOTE: Use the debugless read so we don't flood kernel log
4941 * if IWL_DL_IO is set */
4942 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
4943 i + RTC_INST_LOWER_BOUND);
4944 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
4945 if (val != le32_to_cpu(*image)) {
4946 #if 0 /* Enable this if you want to see details */
4947 IWL_ERROR("uCode INST section is invalid at "
4948 "offset 0x%x, is 0x%x, s/b 0x%x\n",
4949 i, val, *image);
4950 #endif
4951 rc = -EIO;
4952 errcnt++;
4953 if (errcnt >= 3)
4954 break;
4955 }
4956 }
4957
4958 iwl_release_nic_access(priv);
4959
4960 return rc;
4961 }
4962
4963
4964 /**
4965 * iwl4965_verify_ucode - determine which instruction image is in SRAM,
4966 * and verify its contents
4967 */
4968 static int iwl4965_verify_ucode(struct iwl_priv *priv)
4969 {
4970 __le32 *image;
4971 u32 len;
4972 int rc = 0;
4973
4974 /* Try bootstrap */
4975 image = (__le32 *)priv->ucode_boot.v_addr;
4976 len = priv->ucode_boot.len;
4977 rc = iwl4965_verify_inst_sparse(priv, image, len);
4978 if (rc == 0) {
4979 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
4980 return 0;
4981 }
4982
4983 /* Try initialize */
4984 image = (__le32 *)priv->ucode_init.v_addr;
4985 len = priv->ucode_init.len;
4986 rc = iwl4965_verify_inst_sparse(priv, image, len);
4987 if (rc == 0) {
4988 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
4989 return 0;
4990 }
4991
4992 /* Try runtime/protocol */
4993 image = (__le32 *)priv->ucode_code.v_addr;
4994 len = priv->ucode_code.len;
4995 rc = iwl4965_verify_inst_sparse(priv, image, len);
4996 if (rc == 0) {
4997 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
4998 return 0;
4999 }
5000
5001 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5002
5003 /* Since nothing seems to match, show first several data entries in
5004 * instruction SRAM, so maybe visual inspection will give a clue.
5005 * Selection of bootstrap image (vs. other images) is arbitrary. */
5006 image = (__le32 *)priv->ucode_boot.v_addr;
5007 len = priv->ucode_boot.len;
5008 rc = iwl4965_verify_inst_full(priv, image, len);
5009
5010 return rc;
5011 }
5012
5013 static void iwl4965_nic_start(struct iwl_priv *priv)
5014 {
5015 /* Remove all resets to allow NIC to operate */
5016 iwl_write32(priv, CSR_RESET, 0);
5017 }
5018
5019
5020 /**
5021 * iwl4965_read_ucode - Read uCode images from disk file.
5022 *
5023 * Copy into buffers for card to fetch via bus-mastering
5024 */
5025 static int iwl4965_read_ucode(struct iwl_priv *priv)
5026 {
5027 struct iwl4965_ucode *ucode;
5028 int ret;
5029 const struct firmware *ucode_raw;
5030 const char *name = priv->cfg->fw_name;
5031 u8 *src;
5032 size_t len;
5033 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
5034
5035 /* Ask kernel firmware_class module to get the boot firmware off disk.
5036 * request_firmware() is synchronous, file is in memory on return. */
5037 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
5038 if (ret < 0) {
5039 IWL_ERROR("%s firmware file req failed: Reason %d\n",
5040 name, ret);
5041 goto error;
5042 }
5043
5044 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
5045 name, ucode_raw->size);
5046
5047 /* Make sure that we got at least our header! */
5048 if (ucode_raw->size < sizeof(*ucode)) {
5049 IWL_ERROR("File size way too small!\n");
5050 ret = -EINVAL;
5051 goto err_release;
5052 }
5053
5054 /* Data from ucode file: header followed by uCode images */
5055 ucode = (void *)ucode_raw->data;
5056
5057 ver = le32_to_cpu(ucode->ver);
5058 inst_size = le32_to_cpu(ucode->inst_size);
5059 data_size = le32_to_cpu(ucode->data_size);
5060 init_size = le32_to_cpu(ucode->init_size);
5061 init_data_size = le32_to_cpu(ucode->init_data_size);
5062 boot_size = le32_to_cpu(ucode->boot_size);
5063
5064 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
5065 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
5066 inst_size);
5067 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
5068 data_size);
5069 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
5070 init_size);
5071 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
5072 init_data_size);
5073 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
5074 boot_size);
5075
5076 /* Verify size of file vs. image size info in file's header */
5077 if (ucode_raw->size < sizeof(*ucode) +
5078 inst_size + data_size + init_size +
5079 init_data_size + boot_size) {
5080
5081 IWL_DEBUG_INFO("uCode file size %d too small\n",
5082 (int)ucode_raw->size);
5083 ret = -EINVAL;
5084 goto err_release;
5085 }
5086
5087 /* Verify that uCode images will fit in card's SRAM */
5088 if (inst_size > IWL_MAX_INST_SIZE) {
5089 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
5090 inst_size);
5091 ret = -EINVAL;
5092 goto err_release;
5093 }
5094
5095 if (data_size > IWL_MAX_DATA_SIZE) {
5096 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
5097 data_size);
5098 ret = -EINVAL;
5099 goto err_release;
5100 }
5101 if (init_size > IWL_MAX_INST_SIZE) {
5102 IWL_DEBUG_INFO
5103 ("uCode init instr len %d too large to fit in\n",
5104 init_size);
5105 ret = -EINVAL;
5106 goto err_release;
5107 }
5108 if (init_data_size > IWL_MAX_DATA_SIZE) {
5109 IWL_DEBUG_INFO
5110 ("uCode init data len %d too large to fit in\n",
5111 init_data_size);
5112 ret = -EINVAL;
5113 goto err_release;
5114 }
5115 if (boot_size > IWL_MAX_BSM_SIZE) {
5116 IWL_DEBUG_INFO
5117 ("uCode boot instr len %d too large to fit in\n",
5118 boot_size);
5119 ret = -EINVAL;
5120 goto err_release;
5121 }
5122
5123 /* Allocate ucode buffers for card's bus-master loading ... */
5124
5125 /* Runtime instructions and 2 copies of data:
5126 * 1) unmodified from disk
5127 * 2) backup cache for save/restore during power-downs */
5128 priv->ucode_code.len = inst_size;
5129 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
5130
5131 priv->ucode_data.len = data_size;
5132 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
5133
5134 priv->ucode_data_backup.len = data_size;
5135 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5136
5137 /* Initialization instructions and data */
5138 if (init_size && init_data_size) {
5139 priv->ucode_init.len = init_size;
5140 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
5141
5142 priv->ucode_init_data.len = init_data_size;
5143 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5144
5145 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
5146 goto err_pci_alloc;
5147 }
5148
5149 /* Bootstrap (instructions only, no data) */
5150 if (boot_size) {
5151 priv->ucode_boot.len = boot_size;
5152 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
5153
5154 if (!priv->ucode_boot.v_addr)
5155 goto err_pci_alloc;
5156 }
5157
5158 /* Copy images into buffers for card's bus-master reads ... */
5159
5160 /* Runtime instructions (first block of data in file) */
5161 src = &ucode->data[0];
5162 len = priv->ucode_code.len;
5163 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
5164 memcpy(priv->ucode_code.v_addr, src, len);
5165 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
5166 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
5167
5168 /* Runtime data (2nd block)
5169 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
5170 src = &ucode->data[inst_size];
5171 len = priv->ucode_data.len;
5172 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
5173 memcpy(priv->ucode_data.v_addr, src, len);
5174 memcpy(priv->ucode_data_backup.v_addr, src, len);
5175
5176 /* Initialization instructions (3rd block) */
5177 if (init_size) {
5178 src = &ucode->data[inst_size + data_size];
5179 len = priv->ucode_init.len;
5180 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
5181 len);
5182 memcpy(priv->ucode_init.v_addr, src, len);
5183 }
5184
5185 /* Initialization data (4th block) */
5186 if (init_data_size) {
5187 src = &ucode->data[inst_size + data_size + init_size];
5188 len = priv->ucode_init_data.len;
5189 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
5190 len);
5191 memcpy(priv->ucode_init_data.v_addr, src, len);
5192 }
5193
5194 /* Bootstrap instructions (5th block) */
5195 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
5196 len = priv->ucode_boot.len;
5197 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
5198 memcpy(priv->ucode_boot.v_addr, src, len);
5199
5200 /* We have our copies now, allow OS release its copies */
5201 release_firmware(ucode_raw);
5202 return 0;
5203
5204 err_pci_alloc:
5205 IWL_ERROR("failed to allocate pci memory\n");
5206 ret = -ENOMEM;
5207 iwl4965_dealloc_ucode_pci(priv);
5208
5209 err_release:
5210 release_firmware(ucode_raw);
5211
5212 error:
5213 return ret;
5214 }
5215
5216
5217 /**
5218 * iwl4965_set_ucode_ptrs - Set uCode address location
5219 *
5220 * Tell initialization uCode where to find runtime uCode.
5221 *
5222 * BSM registers initially contain pointers to initialization uCode.
5223 * We need to replace them to load runtime uCode inst and data,
5224 * and to save runtime data when powering down.
5225 */
5226 static int iwl4965_set_ucode_ptrs(struct iwl_priv *priv)
5227 {
5228 dma_addr_t pinst;
5229 dma_addr_t pdata;
5230 int rc = 0;
5231 unsigned long flags;
5232
5233 /* bits 35:4 for 4965 */
5234 pinst = priv->ucode_code.p_addr >> 4;
5235 pdata = priv->ucode_data_backup.p_addr >> 4;
5236
5237 spin_lock_irqsave(&priv->lock, flags);
5238 rc = iwl_grab_nic_access(priv);
5239 if (rc) {
5240 spin_unlock_irqrestore(&priv->lock, flags);
5241 return rc;
5242 }
5243
5244 /* Tell bootstrap uCode where to find image to load */
5245 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5246 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5247 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
5248 priv->ucode_data.len);
5249
5250 /* Inst bytecount must be last to set up, bit 31 signals uCode
5251 * that all new ptr/size info is in place */
5252 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
5253 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
5254
5255 iwl_release_nic_access(priv);
5256
5257 spin_unlock_irqrestore(&priv->lock, flags);
5258
5259 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
5260
5261 return rc;
5262 }
5263
5264 /**
5265 * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
5266 *
5267 * Called after REPLY_ALIVE notification received from "initialize" uCode.
5268 *
5269 * The 4965 "initialize" ALIVE reply contains calibration data for:
5270 * Voltage, temperature, and MIMO tx gain correction, now stored in priv
5271 * (3945 does not contain this data).
5272 *
5273 * Tell "initialize" uCode to go ahead and load the runtime uCode.
5274 */
5275 static void iwl4965_init_alive_start(struct iwl_priv *priv)
5276 {
5277 /* Check alive response for "valid" sign from uCode */
5278 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
5279 /* We had an error bringing up the hardware, so take it
5280 * all the way back down so we can try again */
5281 IWL_DEBUG_INFO("Initialize Alive failed.\n");
5282 goto restart;
5283 }
5284
5285 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
5286 * This is a paranoid check, because we would not have gotten the
5287 * "initialize" alive if code weren't properly loaded. */
5288 if (iwl4965_verify_ucode(priv)) {
5289 /* Runtime instruction load was bad;
5290 * take it all the way back down so we can try again */
5291 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
5292 goto restart;
5293 }
5294
5295 /* Calculate temperature */
5296 priv->temperature = iwl4965_get_temperature(priv);
5297
5298 /* Send pointers to protocol/runtime uCode image ... init code will
5299 * load and launch runtime uCode, which will send us another "Alive"
5300 * notification. */
5301 IWL_DEBUG_INFO("Initialization Alive received.\n");
5302 if (iwl4965_set_ucode_ptrs(priv)) {
5303 /* Runtime instruction load won't happen;
5304 * take it all the way back down so we can try again */
5305 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
5306 goto restart;
5307 }
5308 return;
5309
5310 restart:
5311 queue_work(priv->workqueue, &priv->restart);
5312 }
5313
5314
5315 /**
5316 * iwl4965_alive_start - called after REPLY_ALIVE notification received
5317 * from protocol/runtime uCode (initialization uCode's
5318 * Alive gets handled by iwl4965_init_alive_start()).
5319 */
5320 static void iwl4965_alive_start(struct iwl_priv *priv)
5321 {
5322 int ret = 0;
5323
5324 IWL_DEBUG_INFO("Runtime Alive received.\n");
5325
5326 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
5327 /* We had an error bringing up the hardware, so take it
5328 * all the way back down so we can try again */
5329 IWL_DEBUG_INFO("Alive failed.\n");
5330 goto restart;
5331 }
5332
5333 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
5334 * This is a paranoid check, because we would not have gotten the
5335 * "runtime" alive if code weren't properly loaded. */
5336 if (iwl4965_verify_ucode(priv)) {
5337 /* Runtime instruction load was bad;
5338 * take it all the way back down so we can try again */
5339 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
5340 goto restart;
5341 }
5342
5343 iwlcore_clear_stations_table(priv);
5344
5345 ret = priv->cfg->ops->lib->alive_notify(priv);
5346 if (ret) {
5347 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
5348 ret);
5349 goto restart;
5350 }
5351
5352 /* After the ALIVE response, we can send host commands to 4965 uCode */
5353 set_bit(STATUS_ALIVE, &priv->status);
5354
5355 /* Clear out the uCode error bit if it is set */
5356 clear_bit(STATUS_FW_ERROR, &priv->status);
5357
5358 if (iwl_is_rfkill(priv))
5359 return;
5360
5361 ieee80211_start_queues(priv->hw);
5362
5363 priv->active_rate = priv->rates_mask;
5364 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
5365
5366 iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
5367
5368 if (iwl_is_associated(priv)) {
5369 struct iwl4965_rxon_cmd *active_rxon =
5370 (struct iwl4965_rxon_cmd *)(&priv->active_rxon);
5371
5372 memcpy(&priv->staging_rxon, &priv->active_rxon,
5373 sizeof(priv->staging_rxon));
5374 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5375 } else {
5376 /* Initialize our rx_config data */
5377 iwl4965_connection_init_rx_config(priv);
5378 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
5379 }
5380
5381 /* Configure Bluetooth device coexistence support */
5382 iwl4965_send_bt_config(priv);
5383
5384 /* Configure the adapter for unassociated operation */
5385 iwl4965_commit_rxon(priv);
5386
5387 /* At this point, the NIC is initialized and operational */
5388 priv->notif_missed_beacons = 0;
5389
5390 iwl4965_rf_kill_ct_config(priv);
5391
5392 iwl_leds_register(priv);
5393
5394 IWL_DEBUG_INFO("ALIVE processing complete.\n");
5395 set_bit(STATUS_READY, &priv->status);
5396 wake_up_interruptible(&priv->wait_command_queue);
5397
5398 if (priv->error_recovering)
5399 iwl4965_error_recovery(priv);
5400
5401 iwlcore_low_level_notify(priv, IWLCORE_START_EVT);
5402 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
5403 return;
5404
5405 restart:
5406 queue_work(priv->workqueue, &priv->restart);
5407 }
5408
5409 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv);
5410
5411 static void __iwl4965_down(struct iwl_priv *priv)
5412 {
5413 unsigned long flags;
5414 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
5415 struct ieee80211_conf *conf = NULL;
5416
5417 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
5418
5419 conf = ieee80211_get_hw_conf(priv->hw);
5420
5421 if (!exit_pending)
5422 set_bit(STATUS_EXIT_PENDING, &priv->status);
5423
5424 iwl_leds_unregister(priv);
5425
5426 iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT);
5427
5428 iwlcore_clear_stations_table(priv);
5429
5430 /* Unblock any waiting calls */
5431 wake_up_interruptible_all(&priv->wait_command_queue);
5432
5433 /* Wipe out the EXIT_PENDING status bit if we are not actually
5434 * exiting the module */
5435 if (!exit_pending)
5436 clear_bit(STATUS_EXIT_PENDING, &priv->status);
5437
5438 /* stop and reset the on-board processor */
5439 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
5440
5441 /* tell the device to stop sending interrupts */
5442 spin_lock_irqsave(&priv->lock, flags);
5443 iwl4965_disable_interrupts(priv);
5444 spin_unlock_irqrestore(&priv->lock, flags);
5445 iwl_synchronize_irq(priv);
5446
5447 if (priv->mac80211_registered)
5448 ieee80211_stop_queues(priv->hw);
5449
5450 /* If we have not previously called iwl4965_init() then
5451 * clear all bits but the RF Kill and SUSPEND bits and return */
5452 if (!iwl_is_init(priv)) {
5453 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5454 STATUS_RF_KILL_HW |
5455 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5456 STATUS_RF_KILL_SW |
5457 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5458 STATUS_GEO_CONFIGURED |
5459 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5460 STATUS_IN_SUSPEND;
5461 goto exit;
5462 }
5463
5464 /* ...otherwise clear out all the status bits but the RF Kill and
5465 * SUSPEND bits and continue taking the NIC down. */
5466 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5467 STATUS_RF_KILL_HW |
5468 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5469 STATUS_RF_KILL_SW |
5470 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5471 STATUS_GEO_CONFIGURED |
5472 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5473 STATUS_IN_SUSPEND |
5474 test_bit(STATUS_FW_ERROR, &priv->status) <<
5475 STATUS_FW_ERROR;
5476
5477 spin_lock_irqsave(&priv->lock, flags);
5478 iwl_clear_bit(priv, CSR_GP_CNTRL,
5479 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
5480 spin_unlock_irqrestore(&priv->lock, flags);
5481
5482 iwl4965_hw_txq_ctx_stop(priv);
5483 iwl4965_hw_rxq_stop(priv);
5484
5485 spin_lock_irqsave(&priv->lock, flags);
5486 if (!iwl_grab_nic_access(priv)) {
5487 iwl_write_prph(priv, APMG_CLK_DIS_REG,
5488 APMG_CLK_VAL_DMA_CLK_RQT);
5489 iwl_release_nic_access(priv);
5490 }
5491 spin_unlock_irqrestore(&priv->lock, flags);
5492
5493 udelay(5);
5494
5495 iwl4965_hw_nic_stop_master(priv);
5496 iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
5497 iwl4965_hw_nic_reset(priv);
5498
5499 exit:
5500 memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
5501
5502 if (priv->ibss_beacon)
5503 dev_kfree_skb(priv->ibss_beacon);
5504 priv->ibss_beacon = NULL;
5505
5506 /* clear out any free frames */
5507 iwl4965_clear_free_frames(priv);
5508 }
5509
5510 static void iwl4965_down(struct iwl_priv *priv)
5511 {
5512 mutex_lock(&priv->mutex);
5513 __iwl4965_down(priv);
5514 mutex_unlock(&priv->mutex);
5515
5516 iwl4965_cancel_deferred_work(priv);
5517 }
5518
5519 #define MAX_HW_RESTARTS 5
5520
5521 static int __iwl4965_up(struct iwl_priv *priv)
5522 {
5523 int i;
5524 int ret;
5525
5526 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5527 IWL_WARNING("Exit pending; will not bring the NIC up\n");
5528 return -EIO;
5529 }
5530
5531 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
5532 IWL_WARNING("Radio disabled by SW RF kill (module "
5533 "parameter)\n");
5534 iwl_rfkill_set_hw_state(priv);
5535 return -ENODEV;
5536 }
5537
5538 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
5539 IWL_ERROR("ucode not available for device bringup\n");
5540 return -EIO;
5541 }
5542
5543 /* If platform's RF_KILL switch is NOT set to KILL */
5544 if (iwl_read32(priv, CSR_GP_CNTRL) &
5545 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
5546 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5547 else {
5548 set_bit(STATUS_RF_KILL_HW, &priv->status);
5549 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
5550 iwl_rfkill_set_hw_state(priv);
5551 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
5552 return -ENODEV;
5553 }
5554 }
5555
5556 iwl_rfkill_set_hw_state(priv);
5557 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
5558
5559 ret = priv->cfg->ops->lib->hw_nic_init(priv);
5560 if (ret) {
5561 IWL_ERROR("Unable to init nic\n");
5562 return ret;
5563 }
5564
5565 /* make sure rfkill handshake bits are cleared */
5566 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5567 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
5568 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
5569
5570 /* clear (again), then enable host interrupts */
5571 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
5572 iwl4965_enable_interrupts(priv);
5573
5574 /* really make sure rfkill handshake bits are cleared */
5575 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5576 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5577
5578 /* Copy original ucode data image from disk into backup cache.
5579 * This will be used to initialize the on-board processor's
5580 * data SRAM for a clean start when the runtime program first loads. */
5581 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
5582 priv->ucode_data.len);
5583
5584 /* We return success when we resume from suspend and rf_kill is on. */
5585 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
5586 return 0;
5587
5588 for (i = 0; i < MAX_HW_RESTARTS; i++) {
5589
5590 iwlcore_clear_stations_table(priv);
5591
5592 /* load bootstrap state machine,
5593 * load bootstrap program into processor's memory,
5594 * prepare to load the "initialize" uCode */
5595 ret = priv->cfg->ops->lib->load_ucode(priv);
5596
5597 if (ret) {
5598 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
5599 continue;
5600 }
5601
5602 /* start card; "initialize" will load runtime ucode */
5603 iwl4965_nic_start(priv);
5604
5605 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
5606
5607 return 0;
5608 }
5609
5610 set_bit(STATUS_EXIT_PENDING, &priv->status);
5611 __iwl4965_down(priv);
5612
5613 /* tried to restart and config the device for as long as our
5614 * patience could withstand */
5615 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
5616 return -EIO;
5617 }
5618
5619
5620 /*****************************************************************************
5621 *
5622 * Workqueue callbacks
5623 *
5624 *****************************************************************************/
5625
5626 static void iwl4965_bg_init_alive_start(struct work_struct *data)
5627 {
5628 struct iwl_priv *priv =
5629 container_of(data, struct iwl_priv, init_alive_start.work);
5630
5631 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5632 return;
5633
5634 mutex_lock(&priv->mutex);
5635 iwl4965_init_alive_start(priv);
5636 mutex_unlock(&priv->mutex);
5637 }
5638
5639 static void iwl4965_bg_alive_start(struct work_struct *data)
5640 {
5641 struct iwl_priv *priv =
5642 container_of(data, struct iwl_priv, alive_start.work);
5643
5644 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5645 return;
5646
5647 mutex_lock(&priv->mutex);
5648 iwl4965_alive_start(priv);
5649 mutex_unlock(&priv->mutex);
5650 }
5651
5652 static void iwl4965_bg_rf_kill(struct work_struct *work)
5653 {
5654 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
5655
5656 wake_up_interruptible(&priv->wait_command_queue);
5657
5658 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5659 return;
5660
5661 mutex_lock(&priv->mutex);
5662
5663 if (!iwl_is_rfkill(priv)) {
5664 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
5665 "HW and/or SW RF Kill no longer active, restarting "
5666 "device\n");
5667 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
5668 queue_work(priv->workqueue, &priv->restart);
5669 } else {
5670 /* make sure mac80211 stop sending Tx frame */
5671 if (priv->mac80211_registered)
5672 ieee80211_stop_queues(priv->hw);
5673
5674 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
5675 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
5676 "disabled by SW switch\n");
5677 else
5678 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
5679 "Kill switch must be turned off for "
5680 "wireless networking to work.\n");
5681 }
5682 iwl_rfkill_set_hw_state(priv);
5683
5684 mutex_unlock(&priv->mutex);
5685 }
5686
5687 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
5688
5689 static void iwl4965_bg_scan_check(struct work_struct *data)
5690 {
5691 struct iwl_priv *priv =
5692 container_of(data, struct iwl_priv, scan_check.work);
5693
5694 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5695 return;
5696
5697 mutex_lock(&priv->mutex);
5698 if (test_bit(STATUS_SCANNING, &priv->status) ||
5699 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
5700 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
5701 "Scan completion watchdog resetting adapter (%dms)\n",
5702 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
5703
5704 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
5705 iwl4965_send_scan_abort(priv);
5706 }
5707 mutex_unlock(&priv->mutex);
5708 }
5709
5710 static void iwl4965_bg_request_scan(struct work_struct *data)
5711 {
5712 struct iwl_priv *priv =
5713 container_of(data, struct iwl_priv, request_scan);
5714 struct iwl_host_cmd cmd = {
5715 .id = REPLY_SCAN_CMD,
5716 .len = sizeof(struct iwl4965_scan_cmd),
5717 .meta.flags = CMD_SIZE_HUGE,
5718 };
5719 struct iwl4965_scan_cmd *scan;
5720 struct ieee80211_conf *conf = NULL;
5721 u16 cmd_len;
5722 enum ieee80211_band band;
5723 u8 direct_mask;
5724 int ret = 0;
5725
5726 conf = ieee80211_get_hw_conf(priv->hw);
5727
5728 mutex_lock(&priv->mutex);
5729
5730 if (!iwl_is_ready(priv)) {
5731 IWL_WARNING("request scan called when driver not ready.\n");
5732 goto done;
5733 }
5734
5735 /* Make sure the scan wasn't cancelled before this queued work
5736 * was given the chance to run... */
5737 if (!test_bit(STATUS_SCANNING, &priv->status))
5738 goto done;
5739
5740 /* This should never be called or scheduled if there is currently
5741 * a scan active in the hardware. */
5742 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
5743 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
5744 "Ignoring second request.\n");
5745 ret = -EIO;
5746 goto done;
5747 }
5748
5749 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5750 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
5751 goto done;
5752 }
5753
5754 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
5755 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
5756 goto done;
5757 }
5758
5759 if (iwl_is_rfkill(priv)) {
5760 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
5761 goto done;
5762 }
5763
5764 if (!test_bit(STATUS_READY, &priv->status)) {
5765 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
5766 goto done;
5767 }
5768
5769 if (!priv->scan_bands) {
5770 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
5771 goto done;
5772 }
5773
5774 if (!priv->scan) {
5775 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
5776 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
5777 if (!priv->scan) {
5778 ret = -ENOMEM;
5779 goto done;
5780 }
5781 }
5782 scan = priv->scan;
5783 memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
5784
5785 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
5786 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
5787
5788 if (iwl_is_associated(priv)) {
5789 u16 interval = 0;
5790 u32 extra;
5791 u32 suspend_time = 100;
5792 u32 scan_suspend_time = 100;
5793 unsigned long flags;
5794
5795 IWL_DEBUG_INFO("Scanning while associated...\n");
5796
5797 spin_lock_irqsave(&priv->lock, flags);
5798 interval = priv->beacon_int;
5799 spin_unlock_irqrestore(&priv->lock, flags);
5800
5801 scan->suspend_time = 0;
5802 scan->max_out_time = cpu_to_le32(200 * 1024);
5803 if (!interval)
5804 interval = suspend_time;
5805
5806 extra = (suspend_time / interval) << 22;
5807 scan_suspend_time = (extra |
5808 ((suspend_time % interval) * 1024));
5809 scan->suspend_time = cpu_to_le32(scan_suspend_time);
5810 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
5811 scan_suspend_time, interval);
5812 }
5813
5814 /* We should add the ability for user to lock to PASSIVE ONLY */
5815 if (priv->one_direct_scan) {
5816 IWL_DEBUG_SCAN
5817 ("Kicking off one direct scan for '%s'\n",
5818 iwl4965_escape_essid(priv->direct_ssid,
5819 priv->direct_ssid_len));
5820 scan->direct_scan[0].id = WLAN_EID_SSID;
5821 scan->direct_scan[0].len = priv->direct_ssid_len;
5822 memcpy(scan->direct_scan[0].ssid,
5823 priv->direct_ssid, priv->direct_ssid_len);
5824 direct_mask = 1;
5825 } else if (!iwl_is_associated(priv) && priv->essid_len) {
5826 scan->direct_scan[0].id = WLAN_EID_SSID;
5827 scan->direct_scan[0].len = priv->essid_len;
5828 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
5829 direct_mask = 1;
5830 } else {
5831 direct_mask = 0;
5832 }
5833
5834 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
5835 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
5836 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
5837
5838
5839 switch (priv->scan_bands) {
5840 case 2:
5841 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
5842 scan->tx_cmd.rate_n_flags =
5843 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
5844 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
5845
5846 scan->good_CRC_th = 0;
5847 band = IEEE80211_BAND_2GHZ;
5848 break;
5849
5850 case 1:
5851 scan->tx_cmd.rate_n_flags =
5852 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
5853 RATE_MCS_ANT_B_MSK);
5854 scan->good_CRC_th = IWL_GOOD_CRC_TH;
5855 band = IEEE80211_BAND_5GHZ;
5856 break;
5857
5858 default:
5859 IWL_WARNING("Invalid scan band count\n");
5860 goto done;
5861 }
5862
5863 /* We don't build a direct scan probe request; the uCode will do
5864 * that based on the direct_mask added to each channel entry */
5865 cmd_len = iwl4965_fill_probe_req(priv, band,
5866 (struct ieee80211_mgmt *)scan->data,
5867 IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
5868
5869 scan->tx_cmd.len = cpu_to_le16(cmd_len);
5870 /* select Rx chains */
5871
5872 /* Force use of chains B and C (0x6) for scan Rx.
5873 * Avoid A (0x1) because of its off-channel reception on A-band.
5874 * MIMO is not used here, but value is required to make uCode happy. */
5875 scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
5876 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
5877 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
5878 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
5879
5880 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
5881 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
5882
5883 if (direct_mask) {
5884 IWL_DEBUG_SCAN
5885 ("Initiating direct scan for %s.\n",
5886 iwl4965_escape_essid(priv->essid, priv->essid_len));
5887 scan->channel_count =
5888 iwl4965_get_channels_for_scan(
5889 priv, band, 1, /* active */
5890 direct_mask,
5891 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
5892 } else {
5893 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
5894 scan->channel_count =
5895 iwl4965_get_channels_for_scan(
5896 priv, band, 0, /* passive */
5897 direct_mask,
5898 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
5899 }
5900
5901 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
5902 scan->channel_count * sizeof(struct iwl4965_scan_channel);
5903 cmd.data = scan;
5904 scan->len = cpu_to_le16(cmd.len);
5905
5906 set_bit(STATUS_SCAN_HW, &priv->status);
5907 ret = iwl_send_cmd_sync(priv, &cmd);
5908 if (ret)
5909 goto done;
5910
5911 queue_delayed_work(priv->workqueue, &priv->scan_check,
5912 IWL_SCAN_CHECK_WATCHDOG);
5913
5914 mutex_unlock(&priv->mutex);
5915 return;
5916
5917 done:
5918 /* inform mac80211 scan aborted */
5919 queue_work(priv->workqueue, &priv->scan_completed);
5920 mutex_unlock(&priv->mutex);
5921 }
5922
5923 static void iwl4965_bg_up(struct work_struct *data)
5924 {
5925 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
5926
5927 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5928 return;
5929
5930 mutex_lock(&priv->mutex);
5931 __iwl4965_up(priv);
5932 mutex_unlock(&priv->mutex);
5933 }
5934
5935 static void iwl4965_bg_restart(struct work_struct *data)
5936 {
5937 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
5938
5939 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5940 return;
5941
5942 iwl4965_down(priv);
5943 queue_work(priv->workqueue, &priv->up);
5944 }
5945
5946 static void iwl4965_bg_rx_replenish(struct work_struct *data)
5947 {
5948 struct iwl_priv *priv =
5949 container_of(data, struct iwl_priv, rx_replenish);
5950
5951 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5952 return;
5953
5954 mutex_lock(&priv->mutex);
5955 iwl4965_rx_replenish(priv);
5956 mutex_unlock(&priv->mutex);
5957 }
5958
5959 #define IWL_DELAY_NEXT_SCAN (HZ*2)
5960
5961 static void iwl4965_post_associate(struct iwl_priv *priv)
5962 {
5963 struct ieee80211_conf *conf = NULL;
5964 int ret = 0;
5965 DECLARE_MAC_BUF(mac);
5966
5967 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
5968 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
5969 return;
5970 }
5971
5972 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
5973 priv->assoc_id,
5974 print_mac(mac, priv->active_rxon.bssid_addr));
5975
5976
5977 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5978 return;
5979
5980
5981 if (!priv->vif || !priv->is_open)
5982 return;
5983
5984 iwl4965_scan_cancel_timeout(priv, 200);
5985
5986 conf = ieee80211_get_hw_conf(priv->hw);
5987
5988 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5989 iwl4965_commit_rxon(priv);
5990
5991 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
5992 iwl4965_setup_rxon_timing(priv);
5993 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
5994 sizeof(priv->rxon_timing), &priv->rxon_timing);
5995 if (ret)
5996 IWL_WARNING("REPLY_RXON_TIMING failed - "
5997 "Attempting to continue.\n");
5998
5999 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6000
6001 #ifdef CONFIG_IWL4965_HT
6002 if (priv->current_ht_config.is_ht)
6003 iwl4965_set_rxon_ht(priv, &priv->current_ht_config);
6004 #endif /* CONFIG_IWL4965_HT*/
6005 iwl4965_set_rxon_chain(priv);
6006 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6007
6008 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6009 priv->assoc_id, priv->beacon_int);
6010
6011 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6012 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6013 else
6014 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6015
6016 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6017 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
6018 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
6019 else
6020 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6021
6022 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6023 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6024
6025 }
6026
6027 iwl4965_commit_rxon(priv);
6028
6029 switch (priv->iw_mode) {
6030 case IEEE80211_IF_TYPE_STA:
6031 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
6032 break;
6033
6034 case IEEE80211_IF_TYPE_IBSS:
6035
6036 /* clear out the station table */
6037 iwlcore_clear_stations_table(priv);
6038
6039 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
6040 iwl4965_rxon_add_station(priv, priv->bssid, 0);
6041 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
6042 iwl4965_send_beacon_cmd(priv);
6043
6044 break;
6045
6046 default:
6047 IWL_ERROR("%s Should not be called in %d mode\n",
6048 __FUNCTION__, priv->iw_mode);
6049 break;
6050 }
6051
6052 iwl4965_sequence_reset(priv);
6053
6054 #ifdef CONFIG_IWL4965_SENSITIVITY
6055 /* Enable Rx differential gain and sensitivity calibrations */
6056 iwl4965_chain_noise_reset(priv);
6057 priv->start_calib = 1;
6058 #endif /* CONFIG_IWL4965_SENSITIVITY */
6059
6060 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6061 priv->assoc_station_added = 1;
6062
6063 iwl4965_activate_qos(priv, 0);
6064
6065 /* we have just associated, don't start scan too early */
6066 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
6067 }
6068
6069
6070 static void iwl4965_bg_post_associate(struct work_struct *data)
6071 {
6072 struct iwl_priv *priv = container_of(data, struct iwl_priv,
6073 post_associate.work);
6074
6075 mutex_lock(&priv->mutex);
6076 iwl4965_post_associate(priv);
6077 mutex_unlock(&priv->mutex);
6078
6079 }
6080
6081 static void iwl4965_bg_abort_scan(struct work_struct *work)
6082 {
6083 struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
6084
6085 if (!iwl_is_ready(priv))
6086 return;
6087
6088 mutex_lock(&priv->mutex);
6089
6090 set_bit(STATUS_SCAN_ABORTING, &priv->status);
6091 iwl4965_send_scan_abort(priv);
6092
6093 mutex_unlock(&priv->mutex);
6094 }
6095
6096 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
6097
6098 static void iwl4965_bg_scan_completed(struct work_struct *work)
6099 {
6100 struct iwl_priv *priv =
6101 container_of(work, struct iwl_priv, scan_completed);
6102
6103 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
6104
6105 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6106 return;
6107
6108 if (test_bit(STATUS_CONF_PENDING, &priv->status))
6109 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
6110
6111 ieee80211_scan_completed(priv->hw);
6112
6113 /* Since setting the TXPOWER may have been deferred while
6114 * performing the scan, fire one off */
6115 mutex_lock(&priv->mutex);
6116 iwl4965_hw_reg_send_txpower(priv);
6117 mutex_unlock(&priv->mutex);
6118 }
6119
6120 /*****************************************************************************
6121 *
6122 * mac80211 entry point functions
6123 *
6124 *****************************************************************************/
6125
6126 #define UCODE_READY_TIMEOUT (2 * HZ)
6127
6128 static int iwl4965_mac_start(struct ieee80211_hw *hw)
6129 {
6130 struct iwl_priv *priv = hw->priv;
6131 int ret;
6132
6133 IWL_DEBUG_MAC80211("enter\n");
6134
6135 if (pci_enable_device(priv->pci_dev)) {
6136 IWL_ERROR("Fail to pci_enable_device\n");
6137 return -ENODEV;
6138 }
6139 pci_restore_state(priv->pci_dev);
6140 pci_enable_msi(priv->pci_dev);
6141
6142 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
6143 DRV_NAME, priv);
6144 if (ret) {
6145 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
6146 goto out_disable_msi;
6147 }
6148
6149 /* we should be verifying the device is ready to be opened */
6150 mutex_lock(&priv->mutex);
6151
6152 memset(&priv->staging_rxon, 0, sizeof(struct iwl4965_rxon_cmd));
6153 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
6154 * ucode filename and max sizes are card-specific. */
6155
6156 if (!priv->ucode_code.len) {
6157 ret = iwl4965_read_ucode(priv);
6158 if (ret) {
6159 IWL_ERROR("Could not read microcode: %d\n", ret);
6160 mutex_unlock(&priv->mutex);
6161 goto out_release_irq;
6162 }
6163 }
6164
6165 ret = __iwl4965_up(priv);
6166
6167 mutex_unlock(&priv->mutex);
6168
6169 if (ret)
6170 goto out_release_irq;
6171
6172 IWL_DEBUG_INFO("Start UP work done.\n");
6173
6174 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
6175 return 0;
6176
6177 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
6178 * mac80211 will not be run successfully. */
6179 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
6180 test_bit(STATUS_READY, &priv->status),
6181 UCODE_READY_TIMEOUT);
6182 if (!ret) {
6183 if (!test_bit(STATUS_READY, &priv->status)) {
6184 IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
6185 jiffies_to_msecs(UCODE_READY_TIMEOUT));
6186 ret = -ETIMEDOUT;
6187 goto out_release_irq;
6188 }
6189 }
6190
6191 priv->is_open = 1;
6192 IWL_DEBUG_MAC80211("leave\n");
6193 return 0;
6194
6195 out_release_irq:
6196 free_irq(priv->pci_dev->irq, priv);
6197 out_disable_msi:
6198 pci_disable_msi(priv->pci_dev);
6199 pci_disable_device(priv->pci_dev);
6200 priv->is_open = 0;
6201 IWL_DEBUG_MAC80211("leave - failed\n");
6202 return ret;
6203 }
6204
6205 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
6206 {
6207 struct iwl_priv *priv = hw->priv;
6208
6209 IWL_DEBUG_MAC80211("enter\n");
6210
6211 if (!priv->is_open) {
6212 IWL_DEBUG_MAC80211("leave - skip\n");
6213 return;
6214 }
6215
6216 priv->is_open = 0;
6217
6218 if (iwl_is_ready_rf(priv)) {
6219 /* stop mac, cancel any scan request and clear
6220 * RXON_FILTER_ASSOC_MSK BIT
6221 */
6222 mutex_lock(&priv->mutex);
6223 iwl4965_scan_cancel_timeout(priv, 100);
6224 cancel_delayed_work(&priv->post_associate);
6225 mutex_unlock(&priv->mutex);
6226 }
6227
6228 iwl4965_down(priv);
6229
6230 flush_workqueue(priv->workqueue);
6231 free_irq(priv->pci_dev->irq, priv);
6232 pci_disable_msi(priv->pci_dev);
6233 pci_save_state(priv->pci_dev);
6234 pci_disable_device(priv->pci_dev);
6235
6236 IWL_DEBUG_MAC80211("leave\n");
6237 }
6238
6239 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
6240 struct ieee80211_tx_control *ctl)
6241 {
6242 struct iwl_priv *priv = hw->priv;
6243
6244 IWL_DEBUG_MAC80211("enter\n");
6245
6246 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
6247 IWL_DEBUG_MAC80211("leave - monitor\n");
6248 return -1;
6249 }
6250
6251 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
6252 ctl->tx_rate->bitrate);
6253
6254 if (iwl4965_tx_skb(priv, skb, ctl))
6255 dev_kfree_skb_any(skb);
6256
6257 IWL_DEBUG_MAC80211("leave\n");
6258 return 0;
6259 }
6260
6261 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
6262 struct ieee80211_if_init_conf *conf)
6263 {
6264 struct iwl_priv *priv = hw->priv;
6265 unsigned long flags;
6266 DECLARE_MAC_BUF(mac);
6267
6268 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
6269
6270 if (priv->vif) {
6271 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
6272 return -EOPNOTSUPP;
6273 }
6274
6275 spin_lock_irqsave(&priv->lock, flags);
6276 priv->vif = conf->vif;
6277
6278 spin_unlock_irqrestore(&priv->lock, flags);
6279
6280 mutex_lock(&priv->mutex);
6281
6282 if (conf->mac_addr) {
6283 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
6284 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
6285 }
6286
6287 if (iwl_is_ready(priv))
6288 iwl4965_set_mode(priv, conf->type);
6289
6290 mutex_unlock(&priv->mutex);
6291
6292 IWL_DEBUG_MAC80211("leave\n");
6293 return 0;
6294 }
6295
6296 /**
6297 * iwl4965_mac_config - mac80211 config callback
6298 *
6299 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
6300 * be set inappropriately and the driver currently sets the hardware up to
6301 * use it whenever needed.
6302 */
6303 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
6304 {
6305 struct iwl_priv *priv = hw->priv;
6306 const struct iwl_channel_info *ch_info;
6307 unsigned long flags;
6308 int ret = 0;
6309
6310 mutex_lock(&priv->mutex);
6311 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
6312
6313 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
6314
6315 if (!iwl_is_ready(priv)) {
6316 IWL_DEBUG_MAC80211("leave - not ready\n");
6317 ret = -EIO;
6318 goto out;
6319 }
6320
6321 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
6322 test_bit(STATUS_SCANNING, &priv->status))) {
6323 IWL_DEBUG_MAC80211("leave - scanning\n");
6324 set_bit(STATUS_CONF_PENDING, &priv->status);
6325 mutex_unlock(&priv->mutex);
6326 return 0;
6327 }
6328
6329 spin_lock_irqsave(&priv->lock, flags);
6330
6331 ch_info = iwl_get_channel_info(priv, conf->channel->band,
6332 ieee80211_frequency_to_channel(conf->channel->center_freq));
6333 if (!is_channel_valid(ch_info)) {
6334 IWL_DEBUG_MAC80211("leave - invalid channel\n");
6335 spin_unlock_irqrestore(&priv->lock, flags);
6336 ret = -EINVAL;
6337 goto out;
6338 }
6339
6340 #ifdef CONFIG_IWL4965_HT
6341 /* if we are switching from ht to 2.4 clear flags
6342 * from any ht related info since 2.4 does not
6343 * support ht */
6344 if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
6345 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6346 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
6347 #endif
6348 )
6349 priv->staging_rxon.flags = 0;
6350 #endif /* CONFIG_IWL4965_HT */
6351
6352 iwlcore_set_rxon_channel(priv, conf->channel->band,
6353 ieee80211_frequency_to_channel(conf->channel->center_freq));
6354
6355 iwl4965_set_flags_for_phymode(priv, conf->channel->band);
6356
6357 /* The list of supported rates and rate mask can be different
6358 * for each band; since the band may have changed, reset
6359 * the rate mask to what mac80211 lists */
6360 iwl4965_set_rate(priv);
6361
6362 spin_unlock_irqrestore(&priv->lock, flags);
6363
6364 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6365 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
6366 iwl4965_hw_channel_switch(priv, conf->channel);
6367 goto out;
6368 }
6369 #endif
6370
6371 if (priv->cfg->ops->lib->radio_kill_sw)
6372 priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled);
6373
6374 if (!conf->radio_enabled) {
6375 IWL_DEBUG_MAC80211("leave - radio disabled\n");
6376 goto out;
6377 }
6378
6379 if (iwl_is_rfkill(priv)) {
6380 IWL_DEBUG_MAC80211("leave - RF kill\n");
6381 ret = -EIO;
6382 goto out;
6383 }
6384
6385 iwl4965_set_rate(priv);
6386
6387 if (memcmp(&priv->active_rxon,
6388 &priv->staging_rxon, sizeof(priv->staging_rxon)))
6389 iwl4965_commit_rxon(priv);
6390 else
6391 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
6392
6393 IWL_DEBUG_MAC80211("leave\n");
6394
6395 out:
6396 clear_bit(STATUS_CONF_PENDING, &priv->status);
6397 mutex_unlock(&priv->mutex);
6398 return ret;
6399 }
6400
6401 static void iwl4965_config_ap(struct iwl_priv *priv)
6402 {
6403 int ret = 0;
6404
6405 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6406 return;
6407
6408 /* The following should be done only at AP bring up */
6409 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
6410
6411 /* RXON - unassoc (to set timing command) */
6412 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6413 iwl4965_commit_rxon(priv);
6414
6415 /* RXON Timing */
6416 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
6417 iwl4965_setup_rxon_timing(priv);
6418 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6419 sizeof(priv->rxon_timing), &priv->rxon_timing);
6420 if (ret)
6421 IWL_WARNING("REPLY_RXON_TIMING failed - "
6422 "Attempting to continue.\n");
6423
6424 iwl4965_set_rxon_chain(priv);
6425
6426 /* FIXME: what should be the assoc_id for AP? */
6427 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6428 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6429 priv->staging_rxon.flags |=
6430 RXON_FLG_SHORT_PREAMBLE_MSK;
6431 else
6432 priv->staging_rxon.flags &=
6433 ~RXON_FLG_SHORT_PREAMBLE_MSK;
6434
6435 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6436 if (priv->assoc_capability &
6437 WLAN_CAPABILITY_SHORT_SLOT_TIME)
6438 priv->staging_rxon.flags |=
6439 RXON_FLG_SHORT_SLOT_MSK;
6440 else
6441 priv->staging_rxon.flags &=
6442 ~RXON_FLG_SHORT_SLOT_MSK;
6443
6444 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6445 priv->staging_rxon.flags &=
6446 ~RXON_FLG_SHORT_SLOT_MSK;
6447 }
6448 /* restore RXON assoc */
6449 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6450 iwl4965_commit_rxon(priv);
6451 iwl4965_activate_qos(priv, 1);
6452 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
6453 }
6454 iwl4965_send_beacon_cmd(priv);
6455
6456 /* FIXME - we need to add code here to detect a totally new
6457 * configuration, reset the AP, unassoc, rxon timing, assoc,
6458 * clear sta table, add BCAST sta... */
6459 }
6460
6461 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
6462 struct ieee80211_vif *vif,
6463 struct ieee80211_if_conf *conf)
6464 {
6465 struct iwl_priv *priv = hw->priv;
6466 DECLARE_MAC_BUF(mac);
6467 unsigned long flags;
6468 int rc;
6469
6470 if (conf == NULL)
6471 return -EIO;
6472
6473 if (priv->vif != vif) {
6474 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
6475 mutex_unlock(&priv->mutex);
6476 return 0;
6477 }
6478
6479 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
6480 (!conf->beacon || !conf->ssid_len)) {
6481 IWL_DEBUG_MAC80211
6482 ("Leaving in AP mode because HostAPD is not ready.\n");
6483 return 0;
6484 }
6485
6486 if (!iwl_is_alive(priv))
6487 return -EAGAIN;
6488
6489 mutex_lock(&priv->mutex);
6490
6491 if (conf->bssid)
6492 IWL_DEBUG_MAC80211("bssid: %s\n",
6493 print_mac(mac, conf->bssid));
6494
6495 /*
6496 * very dubious code was here; the probe filtering flag is never set:
6497 *
6498 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
6499 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
6500 */
6501
6502 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6503 if (!conf->bssid) {
6504 conf->bssid = priv->mac_addr;
6505 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
6506 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
6507 print_mac(mac, conf->bssid));
6508 }
6509 if (priv->ibss_beacon)
6510 dev_kfree_skb(priv->ibss_beacon);
6511
6512 priv->ibss_beacon = conf->beacon;
6513 }
6514
6515 if (iwl_is_rfkill(priv))
6516 goto done;
6517
6518 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
6519 !is_multicast_ether_addr(conf->bssid)) {
6520 /* If there is currently a HW scan going on in the background
6521 * then we need to cancel it else the RXON below will fail. */
6522 if (iwl4965_scan_cancel_timeout(priv, 100)) {
6523 IWL_WARNING("Aborted scan still in progress "
6524 "after 100ms\n");
6525 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
6526 mutex_unlock(&priv->mutex);
6527 return -EAGAIN;
6528 }
6529 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
6530
6531 /* TODO: Audit driver for usage of these members and see
6532 * if mac80211 deprecates them (priv->bssid looks like it
6533 * shouldn't be there, but I haven't scanned the IBSS code
6534 * to verify) - jpk */
6535 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
6536
6537 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
6538 iwl4965_config_ap(priv);
6539 else {
6540 rc = iwl4965_commit_rxon(priv);
6541 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
6542 iwl4965_rxon_add_station(
6543 priv, priv->active_rxon.bssid_addr, 1);
6544 }
6545
6546 } else {
6547 iwl4965_scan_cancel_timeout(priv, 100);
6548 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6549 iwl4965_commit_rxon(priv);
6550 }
6551
6552 done:
6553 spin_lock_irqsave(&priv->lock, flags);
6554 if (!conf->ssid_len)
6555 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
6556 else
6557 memcpy(priv->essid, conf->ssid, conf->ssid_len);
6558
6559 priv->essid_len = conf->ssid_len;
6560 spin_unlock_irqrestore(&priv->lock, flags);
6561
6562 IWL_DEBUG_MAC80211("leave\n");
6563 mutex_unlock(&priv->mutex);
6564
6565 return 0;
6566 }
6567
6568 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
6569 unsigned int changed_flags,
6570 unsigned int *total_flags,
6571 int mc_count, struct dev_addr_list *mc_list)
6572 {
6573 /*
6574 * XXX: dummy
6575 * see also iwl4965_connection_init_rx_config
6576 */
6577 *total_flags = 0;
6578 }
6579
6580 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
6581 struct ieee80211_if_init_conf *conf)
6582 {
6583 struct iwl_priv *priv = hw->priv;
6584
6585 IWL_DEBUG_MAC80211("enter\n");
6586
6587 mutex_lock(&priv->mutex);
6588
6589 if (iwl_is_ready_rf(priv)) {
6590 iwl4965_scan_cancel_timeout(priv, 100);
6591 cancel_delayed_work(&priv->post_associate);
6592 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6593 iwl4965_commit_rxon(priv);
6594 }
6595 if (priv->vif == conf->vif) {
6596 priv->vif = NULL;
6597 memset(priv->bssid, 0, ETH_ALEN);
6598 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
6599 priv->essid_len = 0;
6600 }
6601 mutex_unlock(&priv->mutex);
6602
6603 IWL_DEBUG_MAC80211("leave\n");
6604
6605 }
6606
6607
6608 #ifdef CONFIG_IWL4965_HT
6609 static void iwl4965_ht_conf(struct iwl_priv *priv,
6610 struct ieee80211_bss_conf *bss_conf)
6611 {
6612 struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
6613 struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
6614 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
6615
6616 IWL_DEBUG_MAC80211("enter: \n");
6617
6618 iwl_conf->is_ht = bss_conf->assoc_ht;
6619
6620 if (!iwl_conf->is_ht)
6621 return;
6622
6623 priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
6624
6625 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
6626 iwl_conf->sgf |= 0x1;
6627 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
6628 iwl_conf->sgf |= 0x2;
6629
6630 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
6631 iwl_conf->max_amsdu_size =
6632 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
6633
6634 iwl_conf->supported_chan_width =
6635 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
6636 iwl_conf->extension_chan_offset =
6637 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
6638 /* If no above or below channel supplied disable FAT channel */
6639 if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
6640 iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
6641 iwl_conf->supported_chan_width = 0;
6642
6643 iwl_conf->tx_mimo_ps_mode =
6644 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
6645 memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
6646
6647 iwl_conf->control_channel = ht_bss_conf->primary_channel;
6648 iwl_conf->tx_chan_width =
6649 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
6650 iwl_conf->ht_protection =
6651 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
6652 iwl_conf->non_GF_STA_present =
6653 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
6654
6655 IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
6656 IWL_DEBUG_MAC80211("leave\n");
6657 }
6658 #else
6659 static inline void iwl4965_ht_conf(struct iwl_priv *priv,
6660 struct ieee80211_bss_conf *bss_conf)
6661 {
6662 }
6663 #endif
6664
6665 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
6666 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
6667 struct ieee80211_vif *vif,
6668 struct ieee80211_bss_conf *bss_conf,
6669 u32 changes)
6670 {
6671 struct iwl_priv *priv = hw->priv;
6672
6673 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
6674
6675 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
6676 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
6677 bss_conf->use_short_preamble);
6678 if (bss_conf->use_short_preamble)
6679 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6680 else
6681 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6682 }
6683
6684 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
6685 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
6686 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
6687 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
6688 else
6689 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
6690 }
6691
6692 if (changes & BSS_CHANGED_HT) {
6693 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
6694 iwl4965_ht_conf(priv, bss_conf);
6695 iwl4965_set_rxon_chain(priv);
6696 }
6697
6698 if (changes & BSS_CHANGED_ASSOC) {
6699 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
6700 /* This should never happen as this function should
6701 * never be called from interrupt context. */
6702 if (WARN_ON_ONCE(in_interrupt()))
6703 return;
6704 if (bss_conf->assoc) {
6705 priv->assoc_id = bss_conf->aid;
6706 priv->beacon_int = bss_conf->beacon_int;
6707 priv->timestamp = bss_conf->timestamp;
6708 priv->assoc_capability = bss_conf->assoc_capability;
6709 priv->next_scan_jiffies = jiffies +
6710 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
6711 mutex_lock(&priv->mutex);
6712 iwl4965_post_associate(priv);
6713 mutex_unlock(&priv->mutex);
6714 } else {
6715 priv->assoc_id = 0;
6716 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
6717 }
6718 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
6719 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
6720 iwl_send_rxon_assoc(priv);
6721 }
6722
6723 }
6724
6725 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
6726 {
6727 int rc = 0;
6728 unsigned long flags;
6729 struct iwl_priv *priv = hw->priv;
6730
6731 IWL_DEBUG_MAC80211("enter\n");
6732
6733 mutex_lock(&priv->mutex);
6734 spin_lock_irqsave(&priv->lock, flags);
6735
6736 if (!iwl_is_ready_rf(priv)) {
6737 rc = -EIO;
6738 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
6739 goto out_unlock;
6740 }
6741
6742 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
6743 rc = -EIO;
6744 IWL_ERROR("ERROR: APs don't scan\n");
6745 goto out_unlock;
6746 }
6747
6748 /* we don't schedule scan within next_scan_jiffies period */
6749 if (priv->next_scan_jiffies &&
6750 time_after(priv->next_scan_jiffies, jiffies)) {
6751 rc = -EAGAIN;
6752 goto out_unlock;
6753 }
6754 /* if we just finished scan ask for delay */
6755 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
6756 IWL_DELAY_NEXT_SCAN, jiffies)) {
6757 rc = -EAGAIN;
6758 goto out_unlock;
6759 }
6760 if (len) {
6761 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
6762 iwl4965_escape_essid(ssid, len), (int)len);
6763
6764 priv->one_direct_scan = 1;
6765 priv->direct_ssid_len = (u8)
6766 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
6767 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
6768 } else
6769 priv->one_direct_scan = 0;
6770
6771 rc = iwl4965_scan_initiate(priv);
6772
6773 IWL_DEBUG_MAC80211("leave\n");
6774
6775 out_unlock:
6776 spin_unlock_irqrestore(&priv->lock, flags);
6777 mutex_unlock(&priv->mutex);
6778
6779 return rc;
6780 }
6781
6782 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
6783 struct ieee80211_key_conf *keyconf, const u8 *addr,
6784 u32 iv32, u16 *phase1key)
6785 {
6786 struct iwl_priv *priv = hw->priv;
6787 u8 sta_id = IWL_INVALID_STATION;
6788 unsigned long flags;
6789 __le16 key_flags = 0;
6790 int i;
6791 DECLARE_MAC_BUF(mac);
6792
6793 IWL_DEBUG_MAC80211("enter\n");
6794
6795 sta_id = iwl4965_hw_find_station(priv, addr);
6796 if (sta_id == IWL_INVALID_STATION) {
6797 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
6798 print_mac(mac, addr));
6799 return;
6800 }
6801
6802 iwl4965_scan_cancel_timeout(priv, 100);
6803
6804 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
6805 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
6806 key_flags &= ~STA_KEY_FLG_INVALID;
6807
6808 if (sta_id == priv->hw_params.bcast_sta_id)
6809 key_flags |= STA_KEY_MULTICAST_MSK;
6810
6811 spin_lock_irqsave(&priv->sta_lock, flags);
6812
6813 priv->stations[sta_id].sta.key.key_flags = key_flags;
6814 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
6815
6816 for (i = 0; i < 5; i++)
6817 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
6818 cpu_to_le16(phase1key[i]);
6819
6820 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
6821 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
6822
6823 iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
6824
6825 spin_unlock_irqrestore(&priv->sta_lock, flags);
6826
6827 IWL_DEBUG_MAC80211("leave\n");
6828 }
6829
6830 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
6831 const u8 *local_addr, const u8 *addr,
6832 struct ieee80211_key_conf *key)
6833 {
6834 struct iwl_priv *priv = hw->priv;
6835 DECLARE_MAC_BUF(mac);
6836 int ret = 0;
6837 u8 sta_id = IWL_INVALID_STATION;
6838 u8 is_default_wep_key = 0;
6839
6840 IWL_DEBUG_MAC80211("enter\n");
6841
6842 if (!priv->cfg->mod_params->hw_crypto) {
6843 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
6844 return -EOPNOTSUPP;
6845 }
6846
6847 if (is_zero_ether_addr(addr))
6848 /* only support pairwise keys */
6849 return -EOPNOTSUPP;
6850
6851 sta_id = iwl4965_hw_find_station(priv, addr);
6852 if (sta_id == IWL_INVALID_STATION) {
6853 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
6854 print_mac(mac, addr));
6855 return -EINVAL;
6856
6857 }
6858
6859 mutex_lock(&priv->mutex);
6860 iwl4965_scan_cancel_timeout(priv, 100);
6861 mutex_unlock(&priv->mutex);
6862
6863 /* If we are getting WEP group key and we didn't receive any key mapping
6864 * so far, we are in legacy wep mode (group key only), otherwise we are
6865 * in 1X mode.
6866 * In legacy wep mode, we use another host command to the uCode */
6867 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
6868 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
6869 if (cmd == SET_KEY)
6870 is_default_wep_key = !priv->key_mapping_key;
6871 else
6872 is_default_wep_key = priv->default_wep_key;
6873 }
6874
6875 switch (cmd) {
6876 case SET_KEY:
6877 if (is_default_wep_key)
6878 ret = iwl_set_default_wep_key(priv, key);
6879 else
6880 ret = iwl_set_dynamic_key(priv, key, sta_id);
6881
6882 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
6883 break;
6884 case DISABLE_KEY:
6885 if (is_default_wep_key)
6886 ret = iwl_remove_default_wep_key(priv, key);
6887 else
6888 ret = iwl_remove_dynamic_key(priv, sta_id);
6889
6890 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
6891 break;
6892 default:
6893 ret = -EINVAL;
6894 }
6895
6896 IWL_DEBUG_MAC80211("leave\n");
6897
6898 return ret;
6899 }
6900
6901 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, int queue,
6902 const struct ieee80211_tx_queue_params *params)
6903 {
6904 struct iwl_priv *priv = hw->priv;
6905 unsigned long flags;
6906 int q;
6907
6908 IWL_DEBUG_MAC80211("enter\n");
6909
6910 if (!iwl_is_ready_rf(priv)) {
6911 IWL_DEBUG_MAC80211("leave - RF not ready\n");
6912 return -EIO;
6913 }
6914
6915 if (queue >= AC_NUM) {
6916 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
6917 return 0;
6918 }
6919
6920 if (!priv->qos_data.qos_enable) {
6921 priv->qos_data.qos_active = 0;
6922 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
6923 return 0;
6924 }
6925 q = AC_NUM - 1 - queue;
6926
6927 spin_lock_irqsave(&priv->lock, flags);
6928
6929 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
6930 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
6931 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
6932 priv->qos_data.def_qos_parm.ac[q].edca_txop =
6933 cpu_to_le16((params->txop * 32));
6934
6935 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
6936 priv->qos_data.qos_active = 1;
6937
6938 spin_unlock_irqrestore(&priv->lock, flags);
6939
6940 mutex_lock(&priv->mutex);
6941 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
6942 iwl4965_activate_qos(priv, 1);
6943 else if (priv->assoc_id && iwl_is_associated(priv))
6944 iwl4965_activate_qos(priv, 0);
6945
6946 mutex_unlock(&priv->mutex);
6947
6948 IWL_DEBUG_MAC80211("leave\n");
6949 return 0;
6950 }
6951
6952 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
6953 struct ieee80211_tx_queue_stats *stats)
6954 {
6955 struct iwl_priv *priv = hw->priv;
6956 int i, avail;
6957 struct iwl4965_tx_queue *txq;
6958 struct iwl4965_queue *q;
6959 unsigned long flags;
6960
6961 IWL_DEBUG_MAC80211("enter\n");
6962
6963 if (!iwl_is_ready_rf(priv)) {
6964 IWL_DEBUG_MAC80211("leave - RF not ready\n");
6965 return -EIO;
6966 }
6967
6968 spin_lock_irqsave(&priv->lock, flags);
6969
6970 for (i = 0; i < AC_NUM; i++) {
6971 txq = &priv->txq[i];
6972 q = &txq->q;
6973 avail = iwl4965_queue_space(q);
6974
6975 stats->data[i].len = q->n_window - avail;
6976 stats->data[i].limit = q->n_window - q->high_mark;
6977 stats->data[i].count = q->n_window;
6978
6979 }
6980 spin_unlock_irqrestore(&priv->lock, flags);
6981
6982 IWL_DEBUG_MAC80211("leave\n");
6983
6984 return 0;
6985 }
6986
6987 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
6988 struct ieee80211_low_level_stats *stats)
6989 {
6990 IWL_DEBUG_MAC80211("enter\n");
6991 IWL_DEBUG_MAC80211("leave\n");
6992
6993 return 0;
6994 }
6995
6996 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
6997 {
6998 IWL_DEBUG_MAC80211("enter\n");
6999 IWL_DEBUG_MAC80211("leave\n");
7000
7001 return 0;
7002 }
7003
7004 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
7005 {
7006 struct iwl_priv *priv = hw->priv;
7007 unsigned long flags;
7008
7009 mutex_lock(&priv->mutex);
7010 IWL_DEBUG_MAC80211("enter\n");
7011
7012 priv->lq_mngr.lq_ready = 0;
7013 #ifdef CONFIG_IWL4965_HT
7014 spin_lock_irqsave(&priv->lock, flags);
7015 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
7016 spin_unlock_irqrestore(&priv->lock, flags);
7017 #endif /* CONFIG_IWL4965_HT */
7018
7019 iwlcore_reset_qos(priv);
7020
7021 cancel_delayed_work(&priv->post_associate);
7022
7023 spin_lock_irqsave(&priv->lock, flags);
7024 priv->assoc_id = 0;
7025 priv->assoc_capability = 0;
7026 priv->assoc_station_added = 0;
7027
7028 /* new association get rid of ibss beacon skb */
7029 if (priv->ibss_beacon)
7030 dev_kfree_skb(priv->ibss_beacon);
7031
7032 priv->ibss_beacon = NULL;
7033
7034 priv->beacon_int = priv->hw->conf.beacon_int;
7035 priv->timestamp = 0;
7036 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
7037 priv->beacon_int = 0;
7038
7039 spin_unlock_irqrestore(&priv->lock, flags);
7040
7041 if (!iwl_is_ready_rf(priv)) {
7042 IWL_DEBUG_MAC80211("leave - not ready\n");
7043 mutex_unlock(&priv->mutex);
7044 return;
7045 }
7046
7047 /* we are restarting association process
7048 * clear RXON_FILTER_ASSOC_MSK bit
7049 */
7050 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
7051 iwl4965_scan_cancel_timeout(priv, 100);
7052 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7053 iwl4965_commit_rxon(priv);
7054 }
7055
7056 /* Per mac80211.h: This is only used in IBSS mode... */
7057 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7058
7059 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7060 mutex_unlock(&priv->mutex);
7061 return;
7062 }
7063
7064 priv->only_active_channel = 0;
7065
7066 iwl4965_set_rate(priv);
7067
7068 mutex_unlock(&priv->mutex);
7069
7070 IWL_DEBUG_MAC80211("leave\n");
7071 }
7072
7073 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
7074 struct ieee80211_tx_control *control)
7075 {
7076 struct iwl_priv *priv = hw->priv;
7077 unsigned long flags;
7078
7079 mutex_lock(&priv->mutex);
7080 IWL_DEBUG_MAC80211("enter\n");
7081
7082 if (!iwl_is_ready_rf(priv)) {
7083 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7084 mutex_unlock(&priv->mutex);
7085 return -EIO;
7086 }
7087
7088 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7089 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7090 mutex_unlock(&priv->mutex);
7091 return -EIO;
7092 }
7093
7094 spin_lock_irqsave(&priv->lock, flags);
7095
7096 if (priv->ibss_beacon)
7097 dev_kfree_skb(priv->ibss_beacon);
7098
7099 priv->ibss_beacon = skb;
7100
7101 priv->assoc_id = 0;
7102
7103 IWL_DEBUG_MAC80211("leave\n");
7104 spin_unlock_irqrestore(&priv->lock, flags);
7105
7106 iwlcore_reset_qos(priv);
7107
7108 queue_work(priv->workqueue, &priv->post_associate.work);
7109
7110 mutex_unlock(&priv->mutex);
7111
7112 return 0;
7113 }
7114
7115 /*****************************************************************************
7116 *
7117 * sysfs attributes
7118 *
7119 *****************************************************************************/
7120
7121 #ifdef CONFIG_IWLWIFI_DEBUG
7122
7123 /*
7124 * The following adds a new attribute to the sysfs representation
7125 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
7126 * used for controlling the debug level.
7127 *
7128 * See the level definitions in iwl for details.
7129 */
7130
7131 static ssize_t show_debug_level(struct device_driver *d, char *buf)
7132 {
7133 return sprintf(buf, "0x%08X\n", iwl_debug_level);
7134 }
7135 static ssize_t store_debug_level(struct device_driver *d,
7136 const char *buf, size_t count)
7137 {
7138 char *p = (char *)buf;
7139 u32 val;
7140
7141 val = simple_strtoul(p, &p, 0);
7142 if (p == buf)
7143 printk(KERN_INFO DRV_NAME
7144 ": %s is not in hex or decimal form.\n", buf);
7145 else
7146 iwl_debug_level = val;
7147
7148 return strnlen(buf, count);
7149 }
7150
7151 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
7152 show_debug_level, store_debug_level);
7153
7154 #endif /* CONFIG_IWLWIFI_DEBUG */
7155
7156
7157 static ssize_t show_temperature(struct device *d,
7158 struct device_attribute *attr, char *buf)
7159 {
7160 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7161
7162 if (!iwl_is_alive(priv))
7163 return -EAGAIN;
7164
7165 return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
7166 }
7167
7168 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
7169
7170 static ssize_t show_rs_window(struct device *d,
7171 struct device_attribute *attr,
7172 char *buf)
7173 {
7174 struct iwl_priv *priv = d->driver_data;
7175 return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
7176 }
7177 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
7178
7179 static ssize_t show_tx_power(struct device *d,
7180 struct device_attribute *attr, char *buf)
7181 {
7182 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7183 return sprintf(buf, "%d\n", priv->user_txpower_limit);
7184 }
7185
7186 static ssize_t store_tx_power(struct device *d,
7187 struct device_attribute *attr,
7188 const char *buf, size_t count)
7189 {
7190 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7191 char *p = (char *)buf;
7192 u32 val;
7193
7194 val = simple_strtoul(p, &p, 10);
7195 if (p == buf)
7196 printk(KERN_INFO DRV_NAME
7197 ": %s is not in decimal form.\n", buf);
7198 else
7199 iwl4965_hw_reg_set_txpower(priv, val);
7200
7201 return count;
7202 }
7203
7204 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
7205
7206 static ssize_t show_flags(struct device *d,
7207 struct device_attribute *attr, char *buf)
7208 {
7209 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7210
7211 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
7212 }
7213
7214 static ssize_t store_flags(struct device *d,
7215 struct device_attribute *attr,
7216 const char *buf, size_t count)
7217 {
7218 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7219 u32 flags = simple_strtoul(buf, NULL, 0);
7220
7221 mutex_lock(&priv->mutex);
7222 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
7223 /* Cancel any currently running scans... */
7224 if (iwl4965_scan_cancel_timeout(priv, 100))
7225 IWL_WARNING("Could not cancel scan.\n");
7226 else {
7227 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
7228 flags);
7229 priv->staging_rxon.flags = cpu_to_le32(flags);
7230 iwl4965_commit_rxon(priv);
7231 }
7232 }
7233 mutex_unlock(&priv->mutex);
7234
7235 return count;
7236 }
7237
7238 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
7239
7240 static ssize_t show_filter_flags(struct device *d,
7241 struct device_attribute *attr, char *buf)
7242 {
7243 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7244
7245 return sprintf(buf, "0x%04X\n",
7246 le32_to_cpu(priv->active_rxon.filter_flags));
7247 }
7248
7249 static ssize_t store_filter_flags(struct device *d,
7250 struct device_attribute *attr,
7251 const char *buf, size_t count)
7252 {
7253 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7254 u32 filter_flags = simple_strtoul(buf, NULL, 0);
7255
7256 mutex_lock(&priv->mutex);
7257 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
7258 /* Cancel any currently running scans... */
7259 if (iwl4965_scan_cancel_timeout(priv, 100))
7260 IWL_WARNING("Could not cancel scan.\n");
7261 else {
7262 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7263 "0x%04X\n", filter_flags);
7264 priv->staging_rxon.filter_flags =
7265 cpu_to_le32(filter_flags);
7266 iwl4965_commit_rxon(priv);
7267 }
7268 }
7269 mutex_unlock(&priv->mutex);
7270
7271 return count;
7272 }
7273
7274 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
7275 store_filter_flags);
7276
7277 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
7278
7279 static ssize_t show_measurement(struct device *d,
7280 struct device_attribute *attr, char *buf)
7281 {
7282 struct iwl_priv *priv = dev_get_drvdata(d);
7283 struct iwl4965_spectrum_notification measure_report;
7284 u32 size = sizeof(measure_report), len = 0, ofs = 0;
7285 u8 *data = (u8 *) & measure_report;
7286 unsigned long flags;
7287
7288 spin_lock_irqsave(&priv->lock, flags);
7289 if (!(priv->measurement_status & MEASUREMENT_READY)) {
7290 spin_unlock_irqrestore(&priv->lock, flags);
7291 return 0;
7292 }
7293 memcpy(&measure_report, &priv->measure_report, size);
7294 priv->measurement_status = 0;
7295 spin_unlock_irqrestore(&priv->lock, flags);
7296
7297 while (size && (PAGE_SIZE - len)) {
7298 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7299 PAGE_SIZE - len, 1);
7300 len = strlen(buf);
7301 if (PAGE_SIZE - len)
7302 buf[len++] = '\n';
7303
7304 ofs += 16;
7305 size -= min(size, 16U);
7306 }
7307
7308 return len;
7309 }
7310
7311 static ssize_t store_measurement(struct device *d,
7312 struct device_attribute *attr,
7313 const char *buf, size_t count)
7314 {
7315 struct iwl_priv *priv = dev_get_drvdata(d);
7316 struct ieee80211_measurement_params params = {
7317 .channel = le16_to_cpu(priv->active_rxon.channel),
7318 .start_time = cpu_to_le64(priv->last_tsf),
7319 .duration = cpu_to_le16(1),
7320 };
7321 u8 type = IWL_MEASURE_BASIC;
7322 u8 buffer[32];
7323 u8 channel;
7324
7325 if (count) {
7326 char *p = buffer;
7327 strncpy(buffer, buf, min(sizeof(buffer), count));
7328 channel = simple_strtoul(p, NULL, 0);
7329 if (channel)
7330 params.channel = channel;
7331
7332 p = buffer;
7333 while (*p && *p != ' ')
7334 p++;
7335 if (*p)
7336 type = simple_strtoul(p + 1, NULL, 0);
7337 }
7338
7339 IWL_DEBUG_INFO("Invoking measurement of type %d on "
7340 "channel %d (for '%s')\n", type, params.channel, buf);
7341 iwl4965_get_measurement(priv, &params, type);
7342
7343 return count;
7344 }
7345
7346 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
7347 show_measurement, store_measurement);
7348 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
7349
7350 static ssize_t store_retry_rate(struct device *d,
7351 struct device_attribute *attr,
7352 const char *buf, size_t count)
7353 {
7354 struct iwl_priv *priv = dev_get_drvdata(d);
7355
7356 priv->retry_rate = simple_strtoul(buf, NULL, 0);
7357 if (priv->retry_rate <= 0)
7358 priv->retry_rate = 1;
7359
7360 return count;
7361 }
7362
7363 static ssize_t show_retry_rate(struct device *d,
7364 struct device_attribute *attr, char *buf)
7365 {
7366 struct iwl_priv *priv = dev_get_drvdata(d);
7367 return sprintf(buf, "%d", priv->retry_rate);
7368 }
7369
7370 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
7371 store_retry_rate);
7372
7373 static ssize_t store_power_level(struct device *d,
7374 struct device_attribute *attr,
7375 const char *buf, size_t count)
7376 {
7377 struct iwl_priv *priv = dev_get_drvdata(d);
7378 int rc;
7379 int mode;
7380
7381 mode = simple_strtoul(buf, NULL, 0);
7382 mutex_lock(&priv->mutex);
7383
7384 if (!iwl_is_ready(priv)) {
7385 rc = -EAGAIN;
7386 goto out;
7387 }
7388
7389 if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
7390 mode = IWL_POWER_AC;
7391 else
7392 mode |= IWL_POWER_ENABLED;
7393
7394 if (mode != priv->power_mode) {
7395 rc = iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(mode));
7396 if (rc) {
7397 IWL_DEBUG_MAC80211("failed setting power mode.\n");
7398 goto out;
7399 }
7400 priv->power_mode = mode;
7401 }
7402
7403 rc = count;
7404
7405 out:
7406 mutex_unlock(&priv->mutex);
7407 return rc;
7408 }
7409
7410 #define MAX_WX_STRING 80
7411
7412 /* Values are in microsecond */
7413 static const s32 timeout_duration[] = {
7414 350000,
7415 250000,
7416 75000,
7417 37000,
7418 25000,
7419 };
7420 static const s32 period_duration[] = {
7421 400000,
7422 700000,
7423 1000000,
7424 1000000,
7425 1000000
7426 };
7427
7428 static ssize_t show_power_level(struct device *d,
7429 struct device_attribute *attr, char *buf)
7430 {
7431 struct iwl_priv *priv = dev_get_drvdata(d);
7432 int level = IWL_POWER_LEVEL(priv->power_mode);
7433 char *p = buf;
7434
7435 p += sprintf(p, "%d ", level);
7436 switch (level) {
7437 case IWL_POWER_MODE_CAM:
7438 case IWL_POWER_AC:
7439 p += sprintf(p, "(AC)");
7440 break;
7441 case IWL_POWER_BATTERY:
7442 p += sprintf(p, "(BATTERY)");
7443 break;
7444 default:
7445 p += sprintf(p,
7446 "(Timeout %dms, Period %dms)",
7447 timeout_duration[level - 1] / 1000,
7448 period_duration[level - 1] / 1000);
7449 }
7450
7451 if (!(priv->power_mode & IWL_POWER_ENABLED))
7452 p += sprintf(p, " OFF\n");
7453 else
7454 p += sprintf(p, " \n");
7455
7456 return (p - buf + 1);
7457
7458 }
7459
7460 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
7461 store_power_level);
7462
7463 static ssize_t show_channels(struct device *d,
7464 struct device_attribute *attr, char *buf)
7465 {
7466 /* all this shit doesn't belong into sysfs anyway */
7467 return 0;
7468 }
7469
7470 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
7471
7472 static ssize_t show_statistics(struct device *d,
7473 struct device_attribute *attr, char *buf)
7474 {
7475 struct iwl_priv *priv = dev_get_drvdata(d);
7476 u32 size = sizeof(struct iwl4965_notif_statistics);
7477 u32 len = 0, ofs = 0;
7478 u8 *data = (u8 *) & priv->statistics;
7479 int rc = 0;
7480
7481 if (!iwl_is_alive(priv))
7482 return -EAGAIN;
7483
7484 mutex_lock(&priv->mutex);
7485 rc = iwl_send_statistics_request(priv, 0);
7486 mutex_unlock(&priv->mutex);
7487
7488 if (rc) {
7489 len = sprintf(buf,
7490 "Error sending statistics request: 0x%08X\n", rc);
7491 return len;
7492 }
7493
7494 while (size && (PAGE_SIZE - len)) {
7495 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7496 PAGE_SIZE - len, 1);
7497 len = strlen(buf);
7498 if (PAGE_SIZE - len)
7499 buf[len++] = '\n';
7500
7501 ofs += 16;
7502 size -= min(size, 16U);
7503 }
7504
7505 return len;
7506 }
7507
7508 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
7509
7510 static ssize_t show_antenna(struct device *d,
7511 struct device_attribute *attr, char *buf)
7512 {
7513 struct iwl_priv *priv = dev_get_drvdata(d);
7514
7515 if (!iwl_is_alive(priv))
7516 return -EAGAIN;
7517
7518 return sprintf(buf, "%d\n", priv->antenna);
7519 }
7520
7521 static ssize_t store_antenna(struct device *d,
7522 struct device_attribute *attr,
7523 const char *buf, size_t count)
7524 {
7525 int ant;
7526 struct iwl_priv *priv = dev_get_drvdata(d);
7527
7528 if (count == 0)
7529 return 0;
7530
7531 if (sscanf(buf, "%1i", &ant) != 1) {
7532 IWL_DEBUG_INFO("not in hex or decimal form.\n");
7533 return count;
7534 }
7535
7536 if ((ant >= 0) && (ant <= 2)) {
7537 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
7538 priv->antenna = (enum iwl4965_antenna)ant;
7539 } else
7540 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
7541
7542
7543 return count;
7544 }
7545
7546 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
7547
7548 static ssize_t show_status(struct device *d,
7549 struct device_attribute *attr, char *buf)
7550 {
7551 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7552 if (!iwl_is_alive(priv))
7553 return -EAGAIN;
7554 return sprintf(buf, "0x%08x\n", (int)priv->status);
7555 }
7556
7557 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
7558
7559 static ssize_t dump_error_log(struct device *d,
7560 struct device_attribute *attr,
7561 const char *buf, size_t count)
7562 {
7563 char *p = (char *)buf;
7564
7565 if (p[0] == '1')
7566 iwl4965_dump_nic_error_log((struct iwl_priv *)d->driver_data);
7567
7568 return strnlen(buf, count);
7569 }
7570
7571 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
7572
7573 static ssize_t dump_event_log(struct device *d,
7574 struct device_attribute *attr,
7575 const char *buf, size_t count)
7576 {
7577 char *p = (char *)buf;
7578
7579 if (p[0] == '1')
7580 iwl4965_dump_nic_event_log((struct iwl_priv *)d->driver_data);
7581
7582 return strnlen(buf, count);
7583 }
7584
7585 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
7586
7587 /*****************************************************************************
7588 *
7589 * driver setup and teardown
7590 *
7591 *****************************************************************************/
7592
7593 static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
7594 {
7595 priv->workqueue = create_workqueue(DRV_NAME);
7596
7597 init_waitqueue_head(&priv->wait_command_queue);
7598
7599 INIT_WORK(&priv->up, iwl4965_bg_up);
7600 INIT_WORK(&priv->restart, iwl4965_bg_restart);
7601 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
7602 INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
7603 INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
7604 INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
7605 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
7606 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
7607 INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
7608 INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
7609 INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
7610 INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
7611
7612 iwl4965_hw_setup_deferred_work(priv);
7613
7614 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
7615 iwl4965_irq_tasklet, (unsigned long)priv);
7616 }
7617
7618 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
7619 {
7620 iwl4965_hw_cancel_deferred_work(priv);
7621
7622 cancel_delayed_work_sync(&priv->init_alive_start);
7623 cancel_delayed_work(&priv->scan_check);
7624 cancel_delayed_work(&priv->alive_start);
7625 cancel_delayed_work(&priv->post_associate);
7626 cancel_work_sync(&priv->beacon_update);
7627 }
7628
7629 static struct attribute *iwl4965_sysfs_entries[] = {
7630 &dev_attr_antenna.attr,
7631 &dev_attr_channels.attr,
7632 &dev_attr_dump_errors.attr,
7633 &dev_attr_dump_events.attr,
7634 &dev_attr_flags.attr,
7635 &dev_attr_filter_flags.attr,
7636 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
7637 &dev_attr_measurement.attr,
7638 #endif
7639 &dev_attr_power_level.attr,
7640 &dev_attr_retry_rate.attr,
7641 &dev_attr_rs_window.attr,
7642 &dev_attr_statistics.attr,
7643 &dev_attr_status.attr,
7644 &dev_attr_temperature.attr,
7645 &dev_attr_tx_power.attr,
7646
7647 NULL
7648 };
7649
7650 static struct attribute_group iwl4965_attribute_group = {
7651 .name = NULL, /* put in device directory */
7652 .attrs = iwl4965_sysfs_entries,
7653 };
7654
7655 static struct ieee80211_ops iwl4965_hw_ops = {
7656 .tx = iwl4965_mac_tx,
7657 .start = iwl4965_mac_start,
7658 .stop = iwl4965_mac_stop,
7659 .add_interface = iwl4965_mac_add_interface,
7660 .remove_interface = iwl4965_mac_remove_interface,
7661 .config = iwl4965_mac_config,
7662 .config_interface = iwl4965_mac_config_interface,
7663 .configure_filter = iwl4965_configure_filter,
7664 .set_key = iwl4965_mac_set_key,
7665 .update_tkip_key = iwl4965_mac_update_tkip_key,
7666 .get_stats = iwl4965_mac_get_stats,
7667 .get_tx_stats = iwl4965_mac_get_tx_stats,
7668 .conf_tx = iwl4965_mac_conf_tx,
7669 .get_tsf = iwl4965_mac_get_tsf,
7670 .reset_tsf = iwl4965_mac_reset_tsf,
7671 .beacon_update = iwl4965_mac_beacon_update,
7672 .bss_info_changed = iwl4965_bss_info_changed,
7673 #ifdef CONFIG_IWL4965_HT
7674 .ampdu_action = iwl4965_mac_ampdu_action,
7675 #endif /* CONFIG_IWL4965_HT */
7676 .hw_scan = iwl4965_mac_hw_scan
7677 };
7678
7679 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
7680 {
7681 int err = 0;
7682 struct iwl_priv *priv;
7683 struct ieee80211_hw *hw;
7684 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
7685 unsigned long flags;
7686 DECLARE_MAC_BUF(mac);
7687
7688 /************************
7689 * 1. Allocating HW data
7690 ************************/
7691
7692 /* Disabling hardware scan means that mac80211 will perform scans
7693 * "the hard way", rather than using device's scan. */
7694 if (cfg->mod_params->disable_hw_scan) {
7695 IWL_DEBUG_INFO("Disabling hw_scan\n");
7696 iwl4965_hw_ops.hw_scan = NULL;
7697 }
7698
7699 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
7700 if (!hw) {
7701 err = -ENOMEM;
7702 goto out;
7703 }
7704 priv = hw->priv;
7705 /* At this point both hw and priv are allocated. */
7706
7707 SET_IEEE80211_DEV(hw, &pdev->dev);
7708
7709 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
7710 priv->cfg = cfg;
7711 priv->pci_dev = pdev;
7712
7713 #ifdef CONFIG_IWLWIFI_DEBUG
7714 iwl_debug_level = priv->cfg->mod_params->debug;
7715 atomic_set(&priv->restrict_refcnt, 0);
7716 #endif
7717
7718 /**************************
7719 * 2. Initializing PCI bus
7720 **************************/
7721 if (pci_enable_device(pdev)) {
7722 err = -ENODEV;
7723 goto out_ieee80211_free_hw;
7724 }
7725
7726 pci_set_master(pdev);
7727
7728 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7729 if (!err)
7730 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
7731 if (err) {
7732 printk(KERN_WARNING DRV_NAME
7733 ": No suitable DMA available.\n");
7734 goto out_pci_disable_device;
7735 }
7736
7737 err = pci_request_regions(pdev, DRV_NAME);
7738 if (err)
7739 goto out_pci_disable_device;
7740
7741 pci_set_drvdata(pdev, priv);
7742
7743 /* We disable the RETRY_TIMEOUT register (0x41) to keep
7744 * PCI Tx retries from interfering with C3 CPU state */
7745 pci_write_config_byte(pdev, 0x41, 0x00);
7746
7747 /***********************
7748 * 3. Read REV register
7749 ***********************/
7750 priv->hw_base = pci_iomap(pdev, 0, 0);
7751 if (!priv->hw_base) {
7752 err = -ENODEV;
7753 goto out_pci_release_regions;
7754 }
7755
7756 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
7757 (unsigned long long) pci_resource_len(pdev, 0));
7758 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
7759
7760 printk(KERN_INFO DRV_NAME
7761 ": Detected Intel Wireless WiFi Link %s\n", priv->cfg->name);
7762
7763 /*****************
7764 * 4. Read EEPROM
7765 *****************/
7766 /* nic init */
7767 iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
7768 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
7769
7770 iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
7771 err = iwl_poll_bit(priv, CSR_GP_CNTRL,
7772 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
7773 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
7774 if (err < 0) {
7775 IWL_DEBUG_INFO("Failed to init the card\n");
7776 goto out_iounmap;
7777 }
7778 /* Read the EEPROM */
7779 err = iwl_eeprom_init(priv);
7780 if (err) {
7781 IWL_ERROR("Unable to init EEPROM\n");
7782 goto out_iounmap;
7783 }
7784 /* MAC Address location in EEPROM same for 3945/4965 */
7785 iwl_eeprom_get_mac(priv, priv->mac_addr);
7786 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
7787 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
7788
7789 /************************
7790 * 5. Setup HW constants
7791 ************************/
7792 /* Device-specific setup */
7793 if (priv->cfg->ops->lib->set_hw_params(priv)) {
7794 IWL_ERROR("failed to set hw parameters\n");
7795 goto out_iounmap;
7796 }
7797
7798 /*******************
7799 * 6. Setup hw/priv
7800 *******************/
7801
7802 err = iwl_setup(priv);
7803 if (err)
7804 goto out_unset_hw_params;
7805 /* At this point both hw and priv are initialized. */
7806
7807 /**********************************
7808 * 7. Initialize module parameters
7809 **********************************/
7810
7811 /* Disable radio (SW RF KILL) via parameter when loading driver */
7812 if (priv->cfg->mod_params->disable) {
7813 set_bit(STATUS_RF_KILL_SW, &priv->status);
7814 IWL_DEBUG_INFO("Radio disabled.\n");
7815 }
7816
7817 if (priv->cfg->mod_params->enable_qos)
7818 priv->qos_data.qos_enable = 1;
7819
7820 /********************
7821 * 8. Setup services
7822 ********************/
7823 spin_lock_irqsave(&priv->lock, flags);
7824 iwl4965_disable_interrupts(priv);
7825 spin_unlock_irqrestore(&priv->lock, flags);
7826
7827 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
7828 if (err) {
7829 IWL_ERROR("failed to create sysfs device attributes\n");
7830 goto out_unset_hw_params;
7831 }
7832
7833 err = iwl_dbgfs_register(priv, DRV_NAME);
7834 if (err) {
7835 IWL_ERROR("failed to create debugfs files\n");
7836 goto out_remove_sysfs;
7837 }
7838
7839 iwl4965_setup_deferred_work(priv);
7840 iwl4965_setup_rx_handlers(priv);
7841
7842 /********************
7843 * 9. Conclude
7844 ********************/
7845 pci_save_state(pdev);
7846 pci_disable_device(pdev);
7847
7848 /* notify iwlcore to init */
7849 iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
7850 return 0;
7851
7852 out_remove_sysfs:
7853 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
7854 out_unset_hw_params:
7855 iwl4965_unset_hw_params(priv);
7856 out_iounmap:
7857 pci_iounmap(pdev, priv->hw_base);
7858 out_pci_release_regions:
7859 pci_release_regions(pdev);
7860 pci_set_drvdata(pdev, NULL);
7861 out_pci_disable_device:
7862 pci_disable_device(pdev);
7863 out_ieee80211_free_hw:
7864 ieee80211_free_hw(priv->hw);
7865 out:
7866 return err;
7867 }
7868
7869 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
7870 {
7871 struct iwl_priv *priv = pci_get_drvdata(pdev);
7872 struct list_head *p, *q;
7873 int i;
7874 unsigned long flags;
7875
7876 if (!priv)
7877 return;
7878
7879 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
7880
7881 if (priv->mac80211_registered) {
7882 ieee80211_unregister_hw(priv->hw);
7883 priv->mac80211_registered = 0;
7884 }
7885
7886 set_bit(STATUS_EXIT_PENDING, &priv->status);
7887
7888 iwl4965_down(priv);
7889
7890 /* make sure we flush any pending irq or
7891 * tasklet for the driver
7892 */
7893 spin_lock_irqsave(&priv->lock, flags);
7894 iwl4965_disable_interrupts(priv);
7895 spin_unlock_irqrestore(&priv->lock, flags);
7896
7897 iwl_synchronize_irq(priv);
7898
7899 /* Free MAC hash list for ADHOC */
7900 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
7901 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
7902 list_del(p);
7903 kfree(list_entry(p, struct iwl4965_ibss_seq, list));
7904 }
7905 }
7906
7907 iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT);
7908 iwl_dbgfs_unregister(priv);
7909 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
7910
7911 iwl4965_dealloc_ucode_pci(priv);
7912
7913 if (priv->rxq.bd)
7914 iwl4965_rx_queue_free(priv, &priv->rxq);
7915 iwl4965_hw_txq_ctx_free(priv);
7916
7917 iwl4965_unset_hw_params(priv);
7918 iwlcore_clear_stations_table(priv);
7919
7920
7921 /*netif_stop_queue(dev); */
7922 flush_workqueue(priv->workqueue);
7923
7924 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
7925 * priv->workqueue... so we can't take down the workqueue
7926 * until now... */
7927 destroy_workqueue(priv->workqueue);
7928 priv->workqueue = NULL;
7929
7930 pci_iounmap(pdev, priv->hw_base);
7931 pci_release_regions(pdev);
7932 pci_disable_device(pdev);
7933 pci_set_drvdata(pdev, NULL);
7934
7935 iwl_free_channel_map(priv);
7936 iwl4965_free_geos(priv);
7937
7938 if (priv->ibss_beacon)
7939 dev_kfree_skb(priv->ibss_beacon);
7940
7941 ieee80211_free_hw(priv->hw);
7942 }
7943
7944 #ifdef CONFIG_PM
7945
7946 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
7947 {
7948 struct iwl_priv *priv = pci_get_drvdata(pdev);
7949
7950 if (priv->is_open) {
7951 set_bit(STATUS_IN_SUSPEND, &priv->status);
7952 iwl4965_mac_stop(priv->hw);
7953 priv->is_open = 1;
7954 }
7955
7956 pci_set_power_state(pdev, PCI_D3hot);
7957
7958 return 0;
7959 }
7960
7961 static int iwl4965_pci_resume(struct pci_dev *pdev)
7962 {
7963 struct iwl_priv *priv = pci_get_drvdata(pdev);
7964
7965 pci_set_power_state(pdev, PCI_D0);
7966
7967 if (priv->is_open)
7968 iwl4965_mac_start(priv->hw);
7969
7970 clear_bit(STATUS_IN_SUSPEND, &priv->status);
7971 return 0;
7972 }
7973
7974 #endif /* CONFIG_PM */
7975
7976 /*****************************************************************************
7977 *
7978 * driver and module entry point
7979 *
7980 *****************************************************************************/
7981
7982 /* Hardware specific file defines the PCI IDs table for that hardware module */
7983 static struct pci_device_id iwl_hw_card_ids[] = {
7984 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
7985 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
7986 {0}
7987 };
7988 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
7989
7990 static struct pci_driver iwl_driver = {
7991 .name = DRV_NAME,
7992 .id_table = iwl_hw_card_ids,
7993 .probe = iwl4965_pci_probe,
7994 .remove = __devexit_p(iwl4965_pci_remove),
7995 #ifdef CONFIG_PM
7996 .suspend = iwl4965_pci_suspend,
7997 .resume = iwl4965_pci_resume,
7998 #endif
7999 };
8000
8001 static int __init iwl4965_init(void)
8002 {
8003
8004 int ret;
8005 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
8006 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
8007
8008 ret = iwl4965_rate_control_register();
8009 if (ret) {
8010 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
8011 return ret;
8012 }
8013
8014 ret = pci_register_driver(&iwl_driver);
8015 if (ret) {
8016 IWL_ERROR("Unable to initialize PCI module\n");
8017 goto error_register;
8018 }
8019 #ifdef CONFIG_IWLWIFI_DEBUG
8020 ret = driver_create_file(&iwl_driver.driver, &driver_attr_debug_level);
8021 if (ret) {
8022 IWL_ERROR("Unable to create driver sysfs file\n");
8023 goto error_debug;
8024 }
8025 #endif
8026
8027 return ret;
8028
8029 #ifdef CONFIG_IWLWIFI_DEBUG
8030 error_debug:
8031 pci_unregister_driver(&iwl_driver);
8032 #endif
8033 error_register:
8034 iwl4965_rate_control_unregister();
8035 return ret;
8036 }
8037
8038 static void __exit iwl4965_exit(void)
8039 {
8040 #ifdef CONFIG_IWLWIFI_DEBUG
8041 driver_remove_file(&iwl_driver.driver, &driver_attr_debug_level);
8042 #endif
8043 pci_unregister_driver(&iwl_driver);
8044 iwl4965_rate_control_unregister();
8045 }
8046
8047 module_exit(iwl4965_exit);
8048 module_init(iwl4965_init);
SocketAccessConTroL development