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ia64/kvm: compilation fix. export account_system_vtime.
[pv_ops_mirror.git] / drivers / net / wireless / iwlwifi / iwl4965-base.c
blob883b42f7e9989dff95e085cf6afb6577eb9f7f1a
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->sw_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 iwl_is_ready(priv))
2432 iwl4965_send_card_state(priv,
2433 CARD_STATE_CMD_DISABLE,
2434 0);
2435 set_bit(STATUS_RF_KILL_SW, &priv->status);
2436
2437 /* make sure mac80211 stop sending Tx frame */
2438 if (priv->mac80211_registered)
2439 ieee80211_stop_queues(priv->hw);
2440 }
2441 return;
2442 }
2443
2444 spin_lock_irqsave(&priv->lock, flags);
2445 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2446
2447 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2448 spin_unlock_irqrestore(&priv->lock, flags);
2449
2450 /* wake up ucode */
2451 msleep(10);
2452
2453 spin_lock_irqsave(&priv->lock, flags);
2454 iwl_read32(priv, CSR_UCODE_DRV_GP1);
2455 if (!iwl_grab_nic_access(priv))
2456 iwl_release_nic_access(priv);
2457 spin_unlock_irqrestore(&priv->lock, flags);
2458
2459 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2460 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2461 "disabled by HW switch\n");
2462 return;
2463 }
2464
2465 queue_work(priv->workqueue, &priv->restart);
2466 return;
2467 }
2468
2469 void iwl4965_set_decrypted_flag(struct iwl_priv *priv, struct sk_buff *skb,
2470 u32 decrypt_res, struct ieee80211_rx_status *stats)
2471 {
2472 u16 fc =
2473 le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
2474
2475 if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
2476 return;
2477
2478 if (!(fc & IEEE80211_FCTL_PROTECTED))
2479 return;
2480
2481 IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
2482 switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
2483 case RX_RES_STATUS_SEC_TYPE_TKIP:
2484 /* The uCode has got a bad phase 1 Key, pushes the packet.
2485 * Decryption will be done in SW. */
2486 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2487 RX_RES_STATUS_BAD_KEY_TTAK)
2488 break;
2489
2490 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2491 RX_RES_STATUS_BAD_ICV_MIC)
2492 stats->flag |= RX_FLAG_MMIC_ERROR;
2493 case RX_RES_STATUS_SEC_TYPE_WEP:
2494 case RX_RES_STATUS_SEC_TYPE_CCMP:
2495 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2496 RX_RES_STATUS_DECRYPT_OK) {
2497 IWL_DEBUG_RX("hw decrypt successfully!!!\n");
2498 stats->flag |= RX_FLAG_DECRYPTED;
2499 }
2500 break;
2501
2502 default:
2503 break;
2504 }
2505 }
2506
2507
2508 #define IWL_PACKET_RETRY_TIME HZ
2509
2510 int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
2511 {
2512 u16 sc = le16_to_cpu(header->seq_ctrl);
2513 u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
2514 u16 frag = sc & IEEE80211_SCTL_FRAG;
2515 u16 *last_seq, *last_frag;
2516 unsigned long *last_time;
2517
2518 switch (priv->iw_mode) {
2519 case IEEE80211_IF_TYPE_IBSS:{
2520 struct list_head *p;
2521 struct iwl4965_ibss_seq *entry = NULL;
2522 u8 *mac = header->addr2;
2523 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
2524
2525 __list_for_each(p, &priv->ibss_mac_hash[index]) {
2526 entry = list_entry(p, struct iwl4965_ibss_seq, list);
2527 if (!compare_ether_addr(entry->mac, mac))
2528 break;
2529 }
2530 if (p == &priv->ibss_mac_hash[index]) {
2531 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
2532 if (!entry) {
2533 IWL_ERROR("Cannot malloc new mac entry\n");
2534 return 0;
2535 }
2536 memcpy(entry->mac, mac, ETH_ALEN);
2537 entry->seq_num = seq;
2538 entry->frag_num = frag;
2539 entry->packet_time = jiffies;
2540 list_add(&entry->list, &priv->ibss_mac_hash[index]);
2541 return 0;
2542 }
2543 last_seq = &entry->seq_num;
2544 last_frag = &entry->frag_num;
2545 last_time = &entry->packet_time;
2546 break;
2547 }
2548 case IEEE80211_IF_TYPE_STA:
2549 last_seq = &priv->last_seq_num;
2550 last_frag = &priv->last_frag_num;
2551 last_time = &priv->last_packet_time;
2552 break;
2553 default:
2554 return 0;
2555 }
2556 if ((*last_seq == seq) &&
2557 time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
2558 if (*last_frag == frag)
2559 goto drop;
2560 if (*last_frag + 1 != frag)
2561 /* out-of-order fragment */
2562 goto drop;
2563 } else
2564 *last_seq = seq;
2565
2566 *last_frag = frag;
2567 *last_time = jiffies;
2568 return 0;
2569
2570 drop:
2571 return 1;
2572 }
2573
2574 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
2575
2576 #include "iwl-spectrum.h"
2577
2578 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
2579 #define BEACON_TIME_MASK_HIGH 0xFF000000
2580 #define TIME_UNIT 1024
2581
2582 /*
2583 * extended beacon time format
2584 * time in usec will be changed into a 32-bit value in 8:24 format
2585 * the high 1 byte is the beacon counts
2586 * the lower 3 bytes is the time in usec within one beacon interval
2587 */
2588
2589 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
2590 {
2591 u32 quot;
2592 u32 rem;
2593 u32 interval = beacon_interval * 1024;
2594
2595 if (!interval || !usec)
2596 return 0;
2597
2598 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
2599 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
2600
2601 return (quot << 24) + rem;
2602 }
2603
2604 /* base is usually what we get from ucode with each received frame,
2605 * the same as HW timer counter counting down
2606 */
2607
2608 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
2609 {
2610 u32 base_low = base & BEACON_TIME_MASK_LOW;
2611 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
2612 u32 interval = beacon_interval * TIME_UNIT;
2613 u32 res = (base & BEACON_TIME_MASK_HIGH) +
2614 (addon & BEACON_TIME_MASK_HIGH);
2615
2616 if (base_low > addon_low)
2617 res += base_low - addon_low;
2618 else if (base_low < addon_low) {
2619 res += interval + base_low - addon_low;
2620 res += (1 << 24);
2621 } else
2622 res += (1 << 24);
2623
2624 return cpu_to_le32(res);
2625 }
2626
2627 static int iwl4965_get_measurement(struct iwl_priv *priv,
2628 struct ieee80211_measurement_params *params,
2629 u8 type)
2630 {
2631 struct iwl4965_spectrum_cmd spectrum;
2632 struct iwl4965_rx_packet *res;
2633 struct iwl_host_cmd cmd = {
2634 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
2635 .data = (void *)&spectrum,
2636 .meta.flags = CMD_WANT_SKB,
2637 };
2638 u32 add_time = le64_to_cpu(params->start_time);
2639 int rc;
2640 int spectrum_resp_status;
2641 int duration = le16_to_cpu(params->duration);
2642
2643 if (iwl_is_associated(priv))
2644 add_time =
2645 iwl4965_usecs_to_beacons(
2646 le64_to_cpu(params->start_time) - priv->last_tsf,
2647 le16_to_cpu(priv->rxon_timing.beacon_interval));
2648
2649 memset(&spectrum, 0, sizeof(spectrum));
2650
2651 spectrum.channel_count = cpu_to_le16(1);
2652 spectrum.flags =
2653 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
2654 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
2655 cmd.len = sizeof(spectrum);
2656 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
2657
2658 if (iwl_is_associated(priv))
2659 spectrum.start_time =
2660 iwl4965_add_beacon_time(priv->last_beacon_time,
2661 add_time,
2662 le16_to_cpu(priv->rxon_timing.beacon_interval));
2663 else
2664 spectrum.start_time = 0;
2665
2666 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
2667 spectrum.channels[0].channel = params->channel;
2668 spectrum.channels[0].type = type;
2669 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
2670 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
2671 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
2672
2673 rc = iwl_send_cmd_sync(priv, &cmd);
2674 if (rc)
2675 return rc;
2676
2677 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
2678 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
2679 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
2680 rc = -EIO;
2681 }
2682
2683 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
2684 switch (spectrum_resp_status) {
2685 case 0: /* Command will be handled */
2686 if (res->u.spectrum.id != 0xff) {
2687 IWL_DEBUG_INFO
2688 ("Replaced existing measurement: %d\n",
2689 res->u.spectrum.id);
2690 priv->measurement_status &= ~MEASUREMENT_READY;
2691 }
2692 priv->measurement_status |= MEASUREMENT_ACTIVE;
2693 rc = 0;
2694 break;
2695
2696 case 1: /* Command will not be handled */
2697 rc = -EAGAIN;
2698 break;
2699 }
2700
2701 dev_kfree_skb_any(cmd.meta.u.skb);
2702
2703 return rc;
2704 }
2705 #endif
2706
2707 static void iwl4965_txstatus_to_ieee(struct iwl_priv *priv,
2708 struct iwl4965_tx_info *tx_sta)
2709 {
2710
2711 tx_sta->status.ack_signal = 0;
2712 tx_sta->status.excessive_retries = 0;
2713 tx_sta->status.queue_length = 0;
2714 tx_sta->status.queue_number = 0;
2715
2716 if (in_interrupt())
2717 ieee80211_tx_status_irqsafe(priv->hw,
2718 tx_sta->skb[0], &(tx_sta->status));
2719 else
2720 ieee80211_tx_status(priv->hw,
2721 tx_sta->skb[0], &(tx_sta->status));
2722
2723 tx_sta->skb[0] = NULL;
2724 }
2725
2726 /**
2727 * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
2728 *
2729 * When FW advances 'R' index, all entries between old and new 'R' index
2730 * need to be reclaimed. As result, some free space forms. If there is
2731 * enough free space (> low mark), wake the stack that feeds us.
2732 */
2733 int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
2734 {
2735 struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
2736 struct iwl4965_queue *q = &txq->q;
2737 int nfreed = 0;
2738
2739 if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
2740 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
2741 "is out of range [0-%d] %d %d.\n", txq_id,
2742 index, q->n_bd, q->write_ptr, q->read_ptr);
2743 return 0;
2744 }
2745
2746 for (index = iwl_queue_inc_wrap(index, q->n_bd);
2747 q->read_ptr != index;
2748 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
2749 if (txq_id != IWL_CMD_QUEUE_NUM) {
2750 iwl4965_txstatus_to_ieee(priv,
2751 &(txq->txb[txq->q.read_ptr]));
2752 iwl4965_hw_txq_free_tfd(priv, txq);
2753 } else if (nfreed > 1) {
2754 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
2755 q->write_ptr, q->read_ptr);
2756 queue_work(priv->workqueue, &priv->restart);
2757 }
2758 nfreed++;
2759 }
2760
2761 /* if (iwl4965_queue_space(q) > q->low_mark && (txq_id >= 0) &&
2762 (txq_id != IWL_CMD_QUEUE_NUM) &&
2763 priv->mac80211_registered)
2764 ieee80211_wake_queue(priv->hw, txq_id); */
2765
2766
2767 return nfreed;
2768 }
2769
2770 static int iwl4965_is_tx_success(u32 status)
2771 {
2772 status &= TX_STATUS_MSK;
2773 return (status == TX_STATUS_SUCCESS)
2774 || (status == TX_STATUS_DIRECT_DONE);
2775 }
2776
2777 /******************************************************************************
2778 *
2779 * Generic RX handler implementations
2780 *
2781 ******************************************************************************/
2782 #ifdef CONFIG_IWL4965_HT
2783
2784 static inline int iwl4965_get_ra_sta_id(struct iwl_priv *priv,
2785 struct ieee80211_hdr *hdr)
2786 {
2787 if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
2788 return IWL_AP_ID;
2789 else {
2790 u8 *da = ieee80211_get_DA(hdr);
2791 return iwl4965_hw_find_station(priv, da);
2792 }
2793 }
2794
2795 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
2796 struct iwl_priv *priv, int txq_id, int idx)
2797 {
2798 if (priv->txq[txq_id].txb[idx].skb[0])
2799 return (struct ieee80211_hdr *)priv->txq[txq_id].
2800 txb[idx].skb[0]->data;
2801 return NULL;
2802 }
2803
2804 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
2805 {
2806 __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
2807 tx_resp->frame_count);
2808 return le32_to_cpu(*scd_ssn) & MAX_SN;
2809
2810 }
2811
2812 /**
2813 * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
2814 */
2815 static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
2816 struct iwl4965_ht_agg *agg,
2817 struct iwl4965_tx_resp_agg *tx_resp,
2818 u16 start_idx)
2819 {
2820 u16 status;
2821 struct agg_tx_status *frame_status = &tx_resp->status;
2822 struct ieee80211_tx_status *tx_status = NULL;
2823 struct ieee80211_hdr *hdr = NULL;
2824 int i, sh;
2825 int txq_id, idx;
2826 u16 seq;
2827
2828 if (agg->wait_for_ba)
2829 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
2830
2831 agg->frame_count = tx_resp->frame_count;
2832 agg->start_idx = start_idx;
2833 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
2834 agg->bitmap = 0;
2835
2836 /* # frames attempted by Tx command */
2837 if (agg->frame_count == 1) {
2838 /* Only one frame was attempted; no block-ack will arrive */
2839 status = le16_to_cpu(frame_status[0].status);
2840 seq = le16_to_cpu(frame_status[0].sequence);
2841 idx = SEQ_TO_INDEX(seq);
2842 txq_id = SEQ_TO_QUEUE(seq);
2843
2844 /* FIXME: code repetition */
2845 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
2846 agg->frame_count, agg->start_idx, idx);
2847
2848 tx_status = &(priv->txq[txq_id].txb[idx].status);
2849 tx_status->retry_count = tx_resp->failure_frame;
2850 tx_status->queue_number = status & 0xff;
2851 tx_status->queue_length = tx_resp->failure_rts;
2852 tx_status->control.flags &= ~IEEE80211_TXCTL_AMPDU;
2853 tx_status->flags = iwl4965_is_tx_success(status)?
2854 IEEE80211_TX_STATUS_ACK : 0;
2855 iwl4965_hwrate_to_tx_control(priv,
2856 le32_to_cpu(tx_resp->rate_n_flags),
2857 &tx_status->control);
2858 /* FIXME: code repetition end */
2859
2860 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
2861 status & 0xff, tx_resp->failure_frame);
2862 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
2863 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
2864
2865 agg->wait_for_ba = 0;
2866 } else {
2867 /* Two or more frames were attempted; expect block-ack */
2868 u64 bitmap = 0;
2869 int start = agg->start_idx;
2870
2871 /* Construct bit-map of pending frames within Tx window */
2872 for (i = 0; i < agg->frame_count; i++) {
2873 u16 sc;
2874 status = le16_to_cpu(frame_status[i].status);
2875 seq = le16_to_cpu(frame_status[i].sequence);
2876 idx = SEQ_TO_INDEX(seq);
2877 txq_id = SEQ_TO_QUEUE(seq);
2878
2879 if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
2880 AGG_TX_STATE_ABORT_MSK))
2881 continue;
2882
2883 IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
2884 agg->frame_count, txq_id, idx);
2885
2886 hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
2887
2888 sc = le16_to_cpu(hdr->seq_ctrl);
2889 if (idx != (SEQ_TO_SN(sc) & 0xff)) {
2890 IWL_ERROR("BUG_ON idx doesn't match seq control"
2891 " idx=%d, seq_idx=%d, seq=%d\n",
2892 idx, SEQ_TO_SN(sc),
2893 hdr->seq_ctrl);
2894 return -1;
2895 }
2896
2897 IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
2898 i, idx, SEQ_TO_SN(sc));
2899
2900 sh = idx - start;
2901 if (sh > 64) {
2902 sh = (start - idx) + 0xff;
2903 bitmap = bitmap << sh;
2904 sh = 0;
2905 start = idx;
2906 } else if (sh < -64)
2907 sh = 0xff - (start - idx);
2908 else if (sh < 0) {
2909 sh = start - idx;
2910 start = idx;
2911 bitmap = bitmap << sh;
2912 sh = 0;
2913 }
2914 bitmap |= (1 << sh);
2915 IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
2916 start, (u32)(bitmap & 0xFFFFFFFF));
2917 }
2918
2919 agg->bitmap = bitmap;
2920 agg->start_idx = start;
2921 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
2922 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
2923 agg->frame_count, agg->start_idx,
2924 (unsigned long long)agg->bitmap);
2925
2926 if (bitmap)
2927 agg->wait_for_ba = 1;
2928 }
2929 return 0;
2930 }
2931 #endif
2932
2933 /**
2934 * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
2935 */
2936 static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
2937 struct iwl4965_rx_mem_buffer *rxb)
2938 {
2939 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
2940 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
2941 int txq_id = SEQ_TO_QUEUE(sequence);
2942 int index = SEQ_TO_INDEX(sequence);
2943 struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
2944 struct ieee80211_tx_status *tx_status;
2945 struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
2946 u32 status = le32_to_cpu(tx_resp->status);
2947 #ifdef CONFIG_IWL4965_HT
2948 int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
2949 struct ieee80211_hdr *hdr;
2950 __le16 *qc;
2951 #endif
2952
2953 if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
2954 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
2955 "is out of range [0-%d] %d %d\n", txq_id,
2956 index, txq->q.n_bd, txq->q.write_ptr,
2957 txq->q.read_ptr);
2958 return;
2959 }
2960
2961 #ifdef CONFIG_IWL4965_HT
2962 hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
2963 qc = ieee80211_get_qos_ctrl(hdr);
2964
2965 if (qc)
2966 tid = le16_to_cpu(*qc) & 0xf;
2967
2968 sta_id = iwl4965_get_ra_sta_id(priv, hdr);
2969 if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
2970 IWL_ERROR("Station not known\n");
2971 return;
2972 }
2973
2974 if (txq->sched_retry) {
2975 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
2976 struct iwl4965_ht_agg *agg = NULL;
2977
2978 if (!qc)
2979 return;
2980
2981 agg = &priv->stations[sta_id].tid[tid].agg;
2982
2983 iwl4965_tx_status_reply_tx(priv, agg,
2984 (struct iwl4965_tx_resp_agg *)tx_resp, index);
2985
2986 if ((tx_resp->frame_count == 1) &&
2987 !iwl4965_is_tx_success(status)) {
2988 /* TODO: send BAR */
2989 }
2990
2991 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
2992 int freed;
2993 index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
2994 IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
2995 "%d index %d\n", scd_ssn , index);
2996 freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
2997 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
2998
2999 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3000 txq_id >= 0 && priv->mac80211_registered &&
3001 agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)
3002 ieee80211_wake_queue(priv->hw, txq_id);
3003
3004 iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3005 }
3006 } else {
3007 #endif /* CONFIG_IWL4965_HT */
3008 tx_status = &(txq->txb[txq->q.read_ptr].status);
3009
3010 tx_status->retry_count = tx_resp->failure_frame;
3011 tx_status->queue_number = status;
3012 tx_status->queue_length = tx_resp->bt_kill_count;
3013 tx_status->queue_length |= tx_resp->failure_rts;
3014 tx_status->flags =
3015 iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3016 iwl4965_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags),
3017 &tx_status->control);
3018
3019 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3020 "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
3021 status, le32_to_cpu(tx_resp->rate_n_flags),
3022 tx_resp->failure_frame);
3023
3024 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3025 if (index != -1) {
3026 int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3027 #ifdef CONFIG_IWL4965_HT
3028 if (tid != MAX_TID_COUNT)
3029 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3030 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3031 (txq_id >= 0) &&
3032 priv->mac80211_registered)
3033 ieee80211_wake_queue(priv->hw, txq_id);
3034 if (tid != MAX_TID_COUNT)
3035 iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3036 #endif
3037 }
3038 #ifdef CONFIG_IWL4965_HT
3039 }
3040 #endif /* CONFIG_IWL4965_HT */
3041
3042 if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3043 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
3044 }
3045
3046
3047 static void iwl4965_rx_reply_alive(struct iwl_priv *priv,
3048 struct iwl4965_rx_mem_buffer *rxb)
3049 {
3050 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3051 struct iwl4965_alive_resp *palive;
3052 struct delayed_work *pwork;
3053
3054 palive = &pkt->u.alive_frame;
3055
3056 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3057 "0x%01X 0x%01X\n",
3058 palive->is_valid, palive->ver_type,
3059 palive->ver_subtype);
3060
3061 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3062 IWL_DEBUG_INFO("Initialization Alive received.\n");
3063 memcpy(&priv->card_alive_init,
3064 &pkt->u.alive_frame,
3065 sizeof(struct iwl4965_init_alive_resp));
3066 pwork = &priv->init_alive_start;
3067 } else {
3068 IWL_DEBUG_INFO("Runtime Alive received.\n");
3069 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3070 sizeof(struct iwl4965_alive_resp));
3071 pwork = &priv->alive_start;
3072 }
3073
3074 /* We delay the ALIVE response by 5ms to
3075 * give the HW RF Kill time to activate... */
3076 if (palive->is_valid == UCODE_VALID_OK)
3077 queue_delayed_work(priv->workqueue, pwork,
3078 msecs_to_jiffies(5));
3079 else
3080 IWL_WARNING("uCode did not respond OK.\n");
3081 }
3082
3083 static void iwl4965_rx_reply_add_sta(struct iwl_priv *priv,
3084 struct iwl4965_rx_mem_buffer *rxb)
3085 {
3086 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3087
3088 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3089 return;
3090 }
3091
3092 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
3093 struct iwl4965_rx_mem_buffer *rxb)
3094 {
3095 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3096
3097 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3098 "seq 0x%04X ser 0x%08X\n",
3099 le32_to_cpu(pkt->u.err_resp.error_type),
3100 get_cmd_string(pkt->u.err_resp.cmd_id),
3101 pkt->u.err_resp.cmd_id,
3102 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3103 le32_to_cpu(pkt->u.err_resp.error_info));
3104 }
3105
3106 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3107
3108 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl4965_rx_mem_buffer *rxb)
3109 {
3110 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3111 struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon;
3112 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
3113 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3114 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3115 rxon->channel = csa->channel;
3116 priv->staging_rxon.channel = csa->channel;
3117 }
3118
3119 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
3120 struct iwl4965_rx_mem_buffer *rxb)
3121 {
3122 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3123 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3124 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
3125
3126 if (!report->state) {
3127 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3128 "Spectrum Measure Notification: Start\n");
3129 return;
3130 }
3131
3132 memcpy(&priv->measure_report, report, sizeof(*report));
3133 priv->measurement_status |= MEASUREMENT_READY;
3134 #endif
3135 }
3136
3137 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
3138 struct iwl4965_rx_mem_buffer *rxb)
3139 {
3140 #ifdef CONFIG_IWLWIFI_DEBUG
3141 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3142 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
3143 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3144 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3145 #endif
3146 }
3147
3148 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
3149 struct iwl4965_rx_mem_buffer *rxb)
3150 {
3151 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3152 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3153 "notification for %s:\n",
3154 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3155 iwl_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3156 }
3157
3158 static void iwl4965_bg_beacon_update(struct work_struct *work)
3159 {
3160 struct iwl_priv *priv =
3161 container_of(work, struct iwl_priv, beacon_update);
3162 struct sk_buff *beacon;
3163
3164 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3165 beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL);
3166
3167 if (!beacon) {
3168 IWL_ERROR("update beacon failed\n");
3169 return;
3170 }
3171
3172 mutex_lock(&priv->mutex);
3173 /* new beacon skb is allocated every time; dispose previous.*/
3174 if (priv->ibss_beacon)
3175 dev_kfree_skb(priv->ibss_beacon);
3176
3177 priv->ibss_beacon = beacon;
3178 mutex_unlock(&priv->mutex);
3179
3180 iwl4965_send_beacon_cmd(priv);
3181 }
3182
3183 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
3184 struct iwl4965_rx_mem_buffer *rxb)
3185 {
3186 #ifdef CONFIG_IWLWIFI_DEBUG
3187 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3188 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
3189 u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
3190
3191 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3192 "tsf %d %d rate %d\n",
3193 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3194 beacon->beacon_notify_hdr.failure_frame,
3195 le32_to_cpu(beacon->ibss_mgr_status),
3196 le32_to_cpu(beacon->high_tsf),
3197 le32_to_cpu(beacon->low_tsf), rate);
3198 #endif
3199
3200 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3201 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3202 queue_work(priv->workqueue, &priv->beacon_update);
3203 }
3204
3205 /* Service response to REPLY_SCAN_CMD (0x80) */
3206 static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
3207 struct iwl4965_rx_mem_buffer *rxb)
3208 {
3209 #ifdef CONFIG_IWLWIFI_DEBUG
3210 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3211 struct iwl4965_scanreq_notification *notif =
3212 (struct iwl4965_scanreq_notification *)pkt->u.raw;
3213
3214 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3215 #endif
3216 }
3217
3218 /* Service SCAN_START_NOTIFICATION (0x82) */
3219 static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
3220 struct iwl4965_rx_mem_buffer *rxb)
3221 {
3222 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3223 struct iwl4965_scanstart_notification *notif =
3224 (struct iwl4965_scanstart_notification *)pkt->u.raw;
3225 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3226 IWL_DEBUG_SCAN("Scan start: "
3227 "%d [802.11%s] "
3228 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3229 notif->channel,
3230 notif->band ? "bg" : "a",
3231 notif->tsf_high,
3232 notif->tsf_low, notif->status, notif->beacon_timer);
3233 }
3234
3235 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3236 static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
3237 struct iwl4965_rx_mem_buffer *rxb)
3238 {
3239 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3240 struct iwl4965_scanresults_notification *notif =
3241 (struct iwl4965_scanresults_notification *)pkt->u.raw;
3242
3243 IWL_DEBUG_SCAN("Scan ch.res: "
3244 "%d [802.11%s] "
3245 "(TSF: 0x%08X:%08X) - %d "
3246 "elapsed=%lu usec (%dms since last)\n",
3247 notif->channel,
3248 notif->band ? "bg" : "a",
3249 le32_to_cpu(notif->tsf_high),
3250 le32_to_cpu(notif->tsf_low),
3251 le32_to_cpu(notif->statistics[0]),
3252 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3253 jiffies_to_msecs(elapsed_jiffies
3254 (priv->last_scan_jiffies, jiffies)));
3255
3256 priv->last_scan_jiffies = jiffies;
3257 priv->next_scan_jiffies = 0;
3258 }
3259
3260 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3261 static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
3262 struct iwl4965_rx_mem_buffer *rxb)
3263 {
3264 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3265 struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3266
3267 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3268 scan_notif->scanned_channels,
3269 scan_notif->tsf_low,
3270 scan_notif->tsf_high, scan_notif->status);
3271
3272 /* The HW is no longer scanning */
3273 clear_bit(STATUS_SCAN_HW, &priv->status);
3274
3275 /* The scan completion notification came in, so kill that timer... */
3276 cancel_delayed_work(&priv->scan_check);
3277
3278 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3279 (priv->scan_bands == 2) ? "2.4" : "5.2",
3280 jiffies_to_msecs(elapsed_jiffies
3281 (priv->scan_pass_start, jiffies)));
3282
3283 /* Remove this scanned band from the list
3284 * of pending bands to scan */
3285 priv->scan_bands--;
3286
3287 /* If a request to abort was given, or the scan did not succeed
3288 * then we reset the scan state machine and terminate,
3289 * re-queuing another scan if one has been requested */
3290 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3291 IWL_DEBUG_INFO("Aborted scan completed.\n");
3292 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3293 } else {
3294 /* If there are more bands on this scan pass reschedule */
3295 if (priv->scan_bands > 0)
3296 goto reschedule;
3297 }
3298
3299 priv->last_scan_jiffies = jiffies;
3300 priv->next_scan_jiffies = 0;
3301 IWL_DEBUG_INFO("Setting scan to off\n");
3302
3303 clear_bit(STATUS_SCANNING, &priv->status);
3304
3305 IWL_DEBUG_INFO("Scan took %dms\n",
3306 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3307
3308 queue_work(priv->workqueue, &priv->scan_completed);
3309
3310 return;
3311
3312 reschedule:
3313 priv->scan_pass_start = jiffies;
3314 queue_work(priv->workqueue, &priv->request_scan);
3315 }
3316
3317 /* Handle notification from uCode that card's power state is changing
3318 * due to software, hardware, or critical temperature RFKILL */
3319 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
3320 struct iwl4965_rx_mem_buffer *rxb)
3321 {
3322 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3323 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3324 unsigned long status = priv->status;
3325
3326 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3327 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3328 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3329
3330 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
3331 RF_CARD_DISABLED)) {
3332
3333 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
3334 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3335
3336 if (!iwl_grab_nic_access(priv)) {
3337 iwl_write_direct32(
3338 priv, HBUS_TARG_MBX_C,
3339 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3340
3341 iwl_release_nic_access(priv);
3342 }
3343
3344 if (!(flags & RXON_CARD_DISABLED)) {
3345 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3346 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3347 if (!iwl_grab_nic_access(priv)) {
3348 iwl_write_direct32(
3349 priv, HBUS_TARG_MBX_C,
3350 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3351
3352 iwl_release_nic_access(priv);
3353 }
3354 }
3355
3356 if (flags & RF_CARD_DISABLED) {
3357 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
3358 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
3359 iwl_read32(priv, CSR_UCODE_DRV_GP1);
3360 if (!iwl_grab_nic_access(priv))
3361 iwl_release_nic_access(priv);
3362 }
3363 }
3364
3365 if (flags & HW_CARD_DISABLED)
3366 set_bit(STATUS_RF_KILL_HW, &priv->status);
3367 else
3368 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3369
3370
3371 if (flags & SW_CARD_DISABLED)
3372 set_bit(STATUS_RF_KILL_SW, &priv->status);
3373 else
3374 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3375
3376 if (!(flags & RXON_CARD_DISABLED))
3377 iwl4965_scan_cancel(priv);
3378
3379 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3380 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3381 (test_bit(STATUS_RF_KILL_SW, &status) !=
3382 test_bit(STATUS_RF_KILL_SW, &priv->status)))
3383 queue_work(priv->workqueue, &priv->rf_kill);
3384 else
3385 wake_up_interruptible(&priv->wait_command_queue);
3386 }
3387
3388 /**
3389 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
3390 *
3391 * Setup the RX handlers for each of the reply types sent from the uCode
3392 * to the host.
3393 *
3394 * This function chains into the hardware specific files for them to setup
3395 * any hardware specific handlers as well.
3396 */
3397 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
3398 {
3399 priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
3400 priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
3401 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
3402 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
3403 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3404 iwl4965_rx_spectrum_measure_notif;
3405 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
3406 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3407 iwl4965_rx_pm_debug_statistics_notif;
3408 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
3409
3410 /*
3411 * The same handler is used for both the REPLY to a discrete
3412 * statistics request from the host as well as for the periodic
3413 * statistics notifications (after received beacons) from the uCode.
3414 */
3415 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
3416 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
3417
3418 priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
3419 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
3420 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3421 iwl4965_rx_scan_results_notif;
3422 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3423 iwl4965_rx_scan_complete_notif;
3424 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
3425 priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
3426
3427 /* Set up hardware specific Rx handlers */
3428 iwl4965_hw_rx_handler_setup(priv);
3429 }
3430
3431 /**
3432 * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3433 * @rxb: Rx buffer to reclaim
3434 *
3435 * If an Rx buffer has an async callback associated with it the callback
3436 * will be executed. The attached skb (if present) will only be freed
3437 * if the callback returns 1
3438 */
3439 static void iwl4965_tx_cmd_complete(struct iwl_priv *priv,
3440 struct iwl4965_rx_mem_buffer *rxb)
3441 {
3442 struct iwl4965_rx_packet *pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
3443 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3444 int txq_id = SEQ_TO_QUEUE(sequence);
3445 int index = SEQ_TO_INDEX(sequence);
3446 int huge = sequence & SEQ_HUGE_FRAME;
3447 int cmd_index;
3448 struct iwl_cmd *cmd;
3449
3450 /* If a Tx command is being handled and it isn't in the actual
3451 * command queue then there a command routing bug has been introduced
3452 * in the queue management code. */
3453 if (txq_id != IWL_CMD_QUEUE_NUM)
3454 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
3455 txq_id, pkt->hdr.cmd);
3456 BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3457
3458 cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
3459 cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3460
3461 /* Input error checking is done when commands are added to queue. */
3462 if (cmd->meta.flags & CMD_WANT_SKB) {
3463 cmd->meta.source->u.skb = rxb->skb;
3464 rxb->skb = NULL;
3465 } else if (cmd->meta.u.callback &&
3466 !cmd->meta.u.callback(priv, cmd, rxb->skb))
3467 rxb->skb = NULL;
3468
3469 iwl4965_tx_queue_reclaim(priv, txq_id, index);
3470
3471 if (!(cmd->meta.flags & CMD_ASYNC)) {
3472 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3473 wake_up_interruptible(&priv->wait_command_queue);
3474 }
3475 }
3476
3477 /************************** RX-FUNCTIONS ****************************/
3478 /*
3479 * Rx theory of operation
3480 *
3481 * Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs),
3482 * each of which point to Receive Buffers to be filled by 4965. These get
3483 * used not only for Rx frames, but for any command response or notification
3484 * from the 4965. The driver and 4965 manage the Rx buffers by means
3485 * of indexes into the circular buffer.
3486 *
3487 * Rx Queue Indexes
3488 * The host/firmware share two index registers for managing the Rx buffers.
3489 *
3490 * The READ index maps to the first position that the firmware may be writing
3491 * to -- the driver can read up to (but not including) this position and get
3492 * good data.
3493 * The READ index is managed by the firmware once the card is enabled.
3494 *
3495 * The WRITE index maps to the last position the driver has read from -- the
3496 * position preceding WRITE is the last slot the firmware can place a packet.
3497 *
3498 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3499 * WRITE = READ.
3500 *
3501 * During initialization, the host sets up the READ queue position to the first
3502 * INDEX position, and WRITE to the last (READ - 1 wrapped)
3503 *
3504 * When the firmware places a packet in a buffer, it will advance the READ index
3505 * and fire the RX interrupt. The driver can then query the READ index and
3506 * process as many packets as possible, moving the WRITE index forward as it
3507 * resets the Rx queue buffers with new memory.
3508 *
3509 * The management in the driver is as follows:
3510 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
3511 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
3512 * to replenish the iwl->rxq->rx_free.
3513 * + In iwl4965_rx_replenish (scheduled) if 'processed' != 'read' then the
3514 * iwl->rxq is replenished and the READ INDEX is updated (updating the
3515 * 'processed' and 'read' driver indexes as well)
3516 * + A received packet is processed and handed to the kernel network stack,
3517 * detached from the iwl->rxq. The driver 'processed' index is updated.
3518 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3519 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3520 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
3521 * were enough free buffers and RX_STALLED is set it is cleared.
3522 *
3523 *
3524 * Driver sequence:
3525 *
3526 * iwl4965_rx_queue_alloc() Allocates rx_free
3527 * iwl4965_rx_replenish() Replenishes rx_free list from rx_used, and calls
3528 * iwl4965_rx_queue_restock
3529 * iwl4965_rx_queue_restock() Moves available buffers from rx_free into Rx
3530 * queue, updates firmware pointers, and updates
3531 * the WRITE index. If insufficient rx_free buffers
3532 * are available, schedules iwl4965_rx_replenish
3533 *
3534 * -- enable interrupts --
3535 * ISR - iwl4965_rx() Detach iwl4965_rx_mem_buffers from pool up to the
3536 * READ INDEX, detaching the SKB from the pool.
3537 * Moves the packet buffer from queue to rx_used.
3538 * Calls iwl4965_rx_queue_restock to refill any empty
3539 * slots.
3540 * ...
3541 *
3542 */
3543
3544 /**
3545 * iwl4965_rx_queue_space - Return number of free slots available in queue.
3546 */
3547 static int iwl4965_rx_queue_space(const struct iwl4965_rx_queue *q)
3548 {
3549 int s = q->read - q->write;
3550 if (s <= 0)
3551 s += RX_QUEUE_SIZE;
3552 /* keep some buffer to not confuse full and empty queue */
3553 s -= 2;
3554 if (s < 0)
3555 s = 0;
3556 return s;
3557 }
3558
3559 /**
3560 * iwl4965_rx_queue_update_write_ptr - Update the write pointer for the RX queue
3561 */
3562 int iwl4965_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl4965_rx_queue *q)
3563 {
3564 u32 reg = 0;
3565 int rc = 0;
3566 unsigned long flags;
3567
3568 spin_lock_irqsave(&q->lock, flags);
3569
3570 if (q->need_update == 0)
3571 goto exit_unlock;
3572
3573 /* If power-saving is in use, make sure device is awake */
3574 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3575 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
3576
3577 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3578 iwl_set_bit(priv, CSR_GP_CNTRL,
3579 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3580 goto exit_unlock;
3581 }
3582
3583 rc = iwl_grab_nic_access(priv);
3584 if (rc)
3585 goto exit_unlock;
3586
3587 /* Device expects a multiple of 8 */
3588 iwl_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
3589 q->write & ~0x7);
3590 iwl_release_nic_access(priv);
3591
3592 /* Else device is assumed to be awake */
3593 } else
3594 /* Device expects a multiple of 8 */
3595 iwl_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
3596
3597
3598 q->need_update = 0;
3599
3600 exit_unlock:
3601 spin_unlock_irqrestore(&q->lock, flags);
3602 return rc;
3603 }
3604
3605 /**
3606 * iwl4965_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
3607 */
3608 static inline __le32 iwl4965_dma_addr2rbd_ptr(struct iwl_priv *priv,
3609 dma_addr_t dma_addr)
3610 {
3611 return cpu_to_le32((u32)(dma_addr >> 8));
3612 }
3613
3614
3615 /**
3616 * iwl4965_rx_queue_restock - refill RX queue from pre-allocated pool
3617 *
3618 * If there are slots in the RX queue that need to be restocked,
3619 * and we have free pre-allocated buffers, fill the ranks as much
3620 * as we can, pulling from rx_free.
3621 *
3622 * This moves the 'write' index forward to catch up with 'processed', and
3623 * also updates the memory address in the firmware to reference the new
3624 * target buffer.
3625 */
3626 static int iwl4965_rx_queue_restock(struct iwl_priv *priv)
3627 {
3628 struct iwl4965_rx_queue *rxq = &priv->rxq;
3629 struct list_head *element;
3630 struct iwl4965_rx_mem_buffer *rxb;
3631 unsigned long flags;
3632 int write, rc;
3633
3634 spin_lock_irqsave(&rxq->lock, flags);
3635 write = rxq->write & ~0x7;
3636 while ((iwl4965_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
3637 /* Get next free Rx buffer, remove from free list */
3638 element = rxq->rx_free.next;
3639 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
3640 list_del(element);
3641
3642 /* Point to Rx buffer via next RBD in circular buffer */
3643 rxq->bd[rxq->write] = iwl4965_dma_addr2rbd_ptr(priv, rxb->dma_addr);
3644 rxq->queue[rxq->write] = rxb;
3645 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
3646 rxq->free_count--;
3647 }
3648 spin_unlock_irqrestore(&rxq->lock, flags);
3649 /* If the pre-allocated buffer pool is dropping low, schedule to
3650 * refill it */
3651 if (rxq->free_count <= RX_LOW_WATERMARK)
3652 queue_work(priv->workqueue, &priv->rx_replenish);
3653
3654
3655 /* If we've added more space for the firmware to place data, tell it.
3656 * Increment device's write pointer in multiples of 8. */
3657 if ((write != (rxq->write & ~0x7))
3658 || (abs(rxq->write - rxq->read) > 7)) {
3659 spin_lock_irqsave(&rxq->lock, flags);
3660 rxq->need_update = 1;
3661 spin_unlock_irqrestore(&rxq->lock, flags);
3662 rc = iwl4965_rx_queue_update_write_ptr(priv, rxq);
3663 if (rc)
3664 return rc;
3665 }
3666
3667 return 0;
3668 }
3669
3670 /**
3671 * iwl4965_rx_replenish - Move all used packet from rx_used to rx_free
3672 *
3673 * When moving to rx_free an SKB is allocated for the slot.
3674 *
3675 * Also restock the Rx queue via iwl4965_rx_queue_restock.
3676 * This is called as a scheduled work item (except for during initialization)
3677 */
3678 static void iwl4965_rx_allocate(struct iwl_priv *priv)
3679 {
3680 struct iwl4965_rx_queue *rxq = &priv->rxq;
3681 struct list_head *element;
3682 struct iwl4965_rx_mem_buffer *rxb;
3683 unsigned long flags;
3684 spin_lock_irqsave(&rxq->lock, flags);
3685 while (!list_empty(&rxq->rx_used)) {
3686 element = rxq->rx_used.next;
3687 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
3688
3689 /* Alloc a new receive buffer */
3690 rxb->skb =
3691 alloc_skb(priv->hw_params.rx_buf_size,
3692 __GFP_NOWARN | GFP_ATOMIC);
3693 if (!rxb->skb) {
3694 if (net_ratelimit())
3695 printk(KERN_CRIT DRV_NAME
3696 ": Can not allocate SKB buffers\n");
3697 /* We don't reschedule replenish work here -- we will
3698 * call the restock method and if it still needs
3699 * more buffers it will schedule replenish */
3700 break;
3701 }
3702 priv->alloc_rxb_skb++;
3703 list_del(element);
3704
3705 /* Get physical address of RB/SKB */
3706 rxb->dma_addr =
3707 pci_map_single(priv->pci_dev, rxb->skb->data,
3708 priv->hw_params.rx_buf_size, PCI_DMA_FROMDEVICE);
3709 list_add_tail(&rxb->list, &rxq->rx_free);
3710 rxq->free_count++;
3711 }
3712 spin_unlock_irqrestore(&rxq->lock, flags);
3713 }
3714
3715 /*
3716 * this should be called while priv->lock is locked
3717 */
3718 static void __iwl4965_rx_replenish(void *data)
3719 {
3720 struct iwl_priv *priv = data;
3721
3722 iwl4965_rx_allocate(priv);
3723 iwl4965_rx_queue_restock(priv);
3724 }
3725
3726
3727 void iwl4965_rx_replenish(void *data)
3728 {
3729 struct iwl_priv *priv = data;
3730 unsigned long flags;
3731
3732 iwl4965_rx_allocate(priv);
3733
3734 spin_lock_irqsave(&priv->lock, flags);
3735 iwl4965_rx_queue_restock(priv);
3736 spin_unlock_irqrestore(&priv->lock, flags);
3737 }
3738
3739 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
3740 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
3741 * This free routine walks the list of POOL entries and if SKB is set to
3742 * non NULL it is unmapped and freed
3743 */
3744 static void iwl4965_rx_queue_free(struct iwl_priv *priv, struct iwl4965_rx_queue *rxq)
3745 {
3746 int i;
3747 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
3748 if (rxq->pool[i].skb != NULL) {
3749 pci_unmap_single(priv->pci_dev,
3750 rxq->pool[i].dma_addr,
3751 priv->hw_params.rx_buf_size,
3752 PCI_DMA_FROMDEVICE);
3753 dev_kfree_skb(rxq->pool[i].skb);
3754 }
3755 }
3756
3757 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
3758 rxq->dma_addr);
3759 rxq->bd = NULL;
3760 }
3761
3762 int iwl4965_rx_queue_alloc(struct iwl_priv *priv)
3763 {
3764 struct iwl4965_rx_queue *rxq = &priv->rxq;
3765 struct pci_dev *dev = priv->pci_dev;
3766 int i;
3767
3768 spin_lock_init(&rxq->lock);
3769 INIT_LIST_HEAD(&rxq->rx_free);
3770 INIT_LIST_HEAD(&rxq->rx_used);
3771
3772 /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
3773 rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
3774 if (!rxq->bd)
3775 return -ENOMEM;
3776
3777 /* Fill the rx_used queue with _all_ of the Rx buffers */
3778 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
3779 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3780
3781 /* Set us so that we have processed and used all buffers, but have
3782 * not restocked the Rx queue with fresh buffers */
3783 rxq->read = rxq->write = 0;
3784 rxq->free_count = 0;
3785 rxq->need_update = 0;
3786 return 0;
3787 }
3788
3789 void iwl4965_rx_queue_reset(struct iwl_priv *priv, struct iwl4965_rx_queue *rxq)
3790 {
3791 unsigned long flags;
3792 int i;
3793 spin_lock_irqsave(&rxq->lock, flags);
3794 INIT_LIST_HEAD(&rxq->rx_free);
3795 INIT_LIST_HEAD(&rxq->rx_used);
3796 /* Fill the rx_used queue with _all_ of the Rx buffers */
3797 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
3798 /* In the reset function, these buffers may have been allocated
3799 * to an SKB, so we need to unmap and free potential storage */
3800 if (rxq->pool[i].skb != NULL) {
3801 pci_unmap_single(priv->pci_dev,
3802 rxq->pool[i].dma_addr,
3803 priv->hw_params.rx_buf_size,
3804 PCI_DMA_FROMDEVICE);
3805 priv->alloc_rxb_skb--;
3806 dev_kfree_skb(rxq->pool[i].skb);
3807 rxq->pool[i].skb = NULL;
3808 }
3809 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3810 }
3811
3812 /* Set us so that we have processed and used all buffers, but have
3813 * not restocked the Rx queue with fresh buffers */
3814 rxq->read = rxq->write = 0;
3815 rxq->free_count = 0;
3816 spin_unlock_irqrestore(&rxq->lock, flags);
3817 }
3818
3819 /* Convert linear signal-to-noise ratio into dB */
3820 static u8 ratio2dB[100] = {
3821 /* 0 1 2 3 4 5 6 7 8 9 */
3822 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
3823 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
3824 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
3825 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
3826 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
3827 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
3828 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
3829 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
3830 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
3831 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
3832 };
3833
3834 /* Calculates a relative dB value from a ratio of linear
3835 * (i.e. not dB) signal levels.
3836 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
3837 int iwl4965_calc_db_from_ratio(int sig_ratio)
3838 {
3839 /* 1000:1 or higher just report as 60 dB */
3840 if (sig_ratio >= 1000)
3841 return 60;
3842
3843 /* 100:1 or higher, divide by 10 and use table,
3844 * add 20 dB to make up for divide by 10 */
3845 if (sig_ratio >= 100)
3846 return (20 + (int)ratio2dB[sig_ratio/10]);
3847
3848 /* We shouldn't see this */
3849 if (sig_ratio < 1)
3850 return 0;
3851
3852 /* Use table for ratios 1:1 - 99:1 */
3853 return (int)ratio2dB[sig_ratio];
3854 }
3855
3856 #define PERFECT_RSSI (-20) /* dBm */
3857 #define WORST_RSSI (-95) /* dBm */
3858 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
3859
3860 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
3861 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
3862 * about formulas used below. */
3863 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
3864 {
3865 int sig_qual;
3866 int degradation = PERFECT_RSSI - rssi_dbm;
3867
3868 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
3869 * as indicator; formula is (signal dbm - noise dbm).
3870 * SNR at or above 40 is a great signal (100%).
3871 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
3872 * Weakest usable signal is usually 10 - 15 dB SNR. */
3873 if (noise_dbm) {
3874 if (rssi_dbm - noise_dbm >= 40)
3875 return 100;
3876 else if (rssi_dbm < noise_dbm)
3877 return 0;
3878 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
3879
3880 /* Else use just the signal level.
3881 * This formula is a least squares fit of data points collected and
3882 * compared with a reference system that had a percentage (%) display
3883 * for signal quality. */
3884 } else
3885 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
3886 (15 * RSSI_RANGE + 62 * degradation)) /
3887 (RSSI_RANGE * RSSI_RANGE);
3888
3889 if (sig_qual > 100)
3890 sig_qual = 100;
3891 else if (sig_qual < 1)
3892 sig_qual = 0;
3893
3894 return sig_qual;
3895 }
3896
3897 /**
3898 * iwl4965_rx_handle - Main entry function for receiving responses from uCode
3899 *
3900 * Uses the priv->rx_handlers callback function array to invoke
3901 * the appropriate handlers, including command responses,
3902 * frame-received notifications, and other notifications.
3903 */
3904 static void iwl4965_rx_handle(struct iwl_priv *priv)
3905 {
3906 struct iwl4965_rx_mem_buffer *rxb;
3907 struct iwl4965_rx_packet *pkt;
3908 struct iwl4965_rx_queue *rxq = &priv->rxq;
3909 u32 r, i;
3910 int reclaim;
3911 unsigned long flags;
3912 u8 fill_rx = 0;
3913 u32 count = 8;
3914
3915 /* uCode's read index (stored in shared DRAM) indicates the last Rx
3916 * buffer that the driver may process (last buffer filled by ucode). */
3917 r = iwl4965_hw_get_rx_read(priv);
3918 i = rxq->read;
3919
3920 /* Rx interrupt, but nothing sent from uCode */
3921 if (i == r)
3922 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
3923
3924 if (iwl4965_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
3925 fill_rx = 1;
3926
3927 while (i != r) {
3928 rxb = rxq->queue[i];
3929
3930 /* If an RXB doesn't have a Rx queue slot associated with it,
3931 * then a bug has been introduced in the queue refilling
3932 * routines -- catch it here */
3933 BUG_ON(rxb == NULL);
3934
3935 rxq->queue[i] = NULL;
3936
3937 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
3938 priv->hw_params.rx_buf_size,
3939 PCI_DMA_FROMDEVICE);
3940 pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
3941
3942 /* Reclaim a command buffer only if this packet is a response
3943 * to a (driver-originated) command.
3944 * If the packet (e.g. Rx frame) originated from uCode,
3945 * there is no command buffer to reclaim.
3946 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
3947 * but apparently a few don't get set; catch them here. */
3948 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
3949 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
3950 (pkt->hdr.cmd != REPLY_RX) &&
3951 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
3952 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
3953 (pkt->hdr.cmd != REPLY_TX);
3954
3955 /* Based on type of command response or notification,
3956 * handle those that need handling via function in
3957 * rx_handlers table. See iwl4965_setup_rx_handlers() */
3958 if (priv->rx_handlers[pkt->hdr.cmd]) {
3959 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
3960 "r = %d, i = %d, %s, 0x%02x\n", r, i,
3961 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
3962 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
3963 } else {
3964 /* No handling needed */
3965 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
3966 "r %d i %d No handler needed for %s, 0x%02x\n",
3967 r, i, get_cmd_string(pkt->hdr.cmd),
3968 pkt->hdr.cmd);
3969 }
3970
3971 if (reclaim) {
3972 /* Invoke any callbacks, transfer the skb to caller, and
3973 * fire off the (possibly) blocking iwl_send_cmd()
3974 * as we reclaim the driver command queue */
3975 if (rxb && rxb->skb)
3976 iwl4965_tx_cmd_complete(priv, rxb);
3977 else
3978 IWL_WARNING("Claim null rxb?\n");
3979 }
3980
3981 /* For now we just don't re-use anything. We can tweak this
3982 * later to try and re-use notification packets and SKBs that
3983 * fail to Rx correctly */
3984 if (rxb->skb != NULL) {
3985 priv->alloc_rxb_skb--;
3986 dev_kfree_skb_any(rxb->skb);
3987 rxb->skb = NULL;
3988 }
3989
3990 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
3991 priv->hw_params.rx_buf_size,
3992 PCI_DMA_FROMDEVICE);
3993 spin_lock_irqsave(&rxq->lock, flags);
3994 list_add_tail(&rxb->list, &priv->rxq.rx_used);
3995 spin_unlock_irqrestore(&rxq->lock, flags);
3996 i = (i + 1) & RX_QUEUE_MASK;
3997 /* If there are a lot of unused frames,
3998 * restock the Rx queue so ucode wont assert. */
3999 if (fill_rx) {
4000 count++;
4001 if (count >= 8) {
4002 priv->rxq.read = i;
4003 __iwl4965_rx_replenish(priv);
4004 count = 0;
4005 }
4006 }
4007 }
4008
4009 /* Backtrack one entry */
4010 priv->rxq.read = i;
4011 iwl4965_rx_queue_restock(priv);
4012 }
4013
4014 /**
4015 * iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
4016 */
4017 static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv,
4018 struct iwl4965_tx_queue *txq)
4019 {
4020 u32 reg = 0;
4021 int rc = 0;
4022 int txq_id = txq->q.id;
4023
4024 if (txq->need_update == 0)
4025 return rc;
4026
4027 /* if we're trying to save power */
4028 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4029 /* wake up nic if it's powered down ...
4030 * uCode will wake up, and interrupt us again, so next
4031 * time we'll skip this part. */
4032 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
4033
4034 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4035 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4036 iwl_set_bit(priv, CSR_GP_CNTRL,
4037 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4038 return rc;
4039 }
4040
4041 /* restore this queue's parameters in nic hardware. */
4042 rc = iwl_grab_nic_access(priv);
4043 if (rc)
4044 return rc;
4045 iwl_write_direct32(priv, HBUS_TARG_WRPTR,
4046 txq->q.write_ptr | (txq_id << 8));
4047 iwl_release_nic_access(priv);
4048
4049 /* else not in power-save mode, uCode will never sleep when we're
4050 * trying to tx (during RFKILL, we're not trying to tx). */
4051 } else
4052 iwl_write32(priv, HBUS_TARG_WRPTR,
4053 txq->q.write_ptr | (txq_id << 8));
4054
4055 txq->need_update = 0;
4056
4057 return rc;
4058 }
4059
4060 #ifdef CONFIG_IWLWIFI_DEBUG
4061 static void iwl4965_print_rx_config_cmd(struct iwl4965_rxon_cmd *rxon)
4062 {
4063 DECLARE_MAC_BUF(mac);
4064
4065 IWL_DEBUG_RADIO("RX CONFIG:\n");
4066 iwl_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4067 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4068 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4069 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4070 le32_to_cpu(rxon->filter_flags));
4071 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4072 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4073 rxon->ofdm_basic_rates);
4074 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4075 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4076 print_mac(mac, rxon->node_addr));
4077 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4078 print_mac(mac, rxon->bssid_addr));
4079 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4080 }
4081 #endif
4082
4083 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
4084 {
4085 IWL_DEBUG_ISR("Enabling interrupts\n");
4086 set_bit(STATUS_INT_ENABLED, &priv->status);
4087 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4088 }
4089
4090 /* call this function to flush any scheduled tasklet */
4091 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
4092 {
4093 /* wait to make sure we flush pedding tasklet*/
4094 synchronize_irq(priv->pci_dev->irq);
4095 tasklet_kill(&priv->irq_tasklet);
4096 }
4097
4098 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
4099 {
4100 clear_bit(STATUS_INT_ENABLED, &priv->status);
4101
4102 /* disable interrupts from uCode/NIC to host */
4103 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
4104
4105 /* acknowledge/clear/reset any interrupts still pending
4106 * from uCode or flow handler (Rx/Tx DMA) */
4107 iwl_write32(priv, CSR_INT, 0xffffffff);
4108 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4109 IWL_DEBUG_ISR("Disabled interrupts\n");
4110 }
4111
4112 static const char *desc_lookup(int i)
4113 {
4114 switch (i) {
4115 case 1:
4116 return "FAIL";
4117 case 2:
4118 return "BAD_PARAM";
4119 case 3:
4120 return "BAD_CHECKSUM";
4121 case 4:
4122 return "NMI_INTERRUPT";
4123 case 5:
4124 return "SYSASSERT";
4125 case 6:
4126 return "FATAL_ERROR";
4127 }
4128
4129 return "UNKNOWN";
4130 }
4131
4132 #define ERROR_START_OFFSET (1 * sizeof(u32))
4133 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
4134
4135 static void iwl4965_dump_nic_error_log(struct iwl_priv *priv)
4136 {
4137 u32 data2, line;
4138 u32 desc, time, count, base, data1;
4139 u32 blink1, blink2, ilink1, ilink2;
4140 int rc;
4141
4142 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4143
4144 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
4145 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4146 return;
4147 }
4148
4149 rc = iwl_grab_nic_access(priv);
4150 if (rc) {
4151 IWL_WARNING("Can not read from adapter at this time.\n");
4152 return;
4153 }
4154
4155 count = iwl_read_targ_mem(priv, base);
4156
4157 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4158 IWL_ERROR("Start IWL Error Log Dump:\n");
4159 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
4160 }
4161
4162 desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
4163 blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
4164 blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
4165 ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
4166 ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
4167 data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
4168 data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
4169 line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
4170 time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
4171
4172 IWL_ERROR("Desc Time "
4173 "data1 data2 line\n");
4174 IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4175 desc_lookup(desc), desc, time, data1, data2, line);
4176 IWL_ERROR("blink1 blink2 ilink1 ilink2\n");
4177 IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
4178 ilink1, ilink2);
4179
4180 iwl_release_nic_access(priv);
4181 }
4182
4183 #define EVENT_START_OFFSET (4 * sizeof(u32))
4184
4185 /**
4186 * iwl4965_print_event_log - Dump error event log to syslog
4187 *
4188 * NOTE: Must be called with iwl_grab_nic_access() already obtained!
4189 */
4190 static void iwl4965_print_event_log(struct iwl_priv *priv, u32 start_idx,
4191 u32 num_events, u32 mode)
4192 {
4193 u32 i;
4194 u32 base; /* SRAM byte address of event log header */
4195 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4196 u32 ptr; /* SRAM byte address of log data */
4197 u32 ev, time, data; /* event log data */
4198
4199 if (num_events == 0)
4200 return;
4201
4202 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4203
4204 if (mode == 0)
4205 event_size = 2 * sizeof(u32);
4206 else
4207 event_size = 3 * sizeof(u32);
4208
4209 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4210
4211 /* "time" is actually "data" for mode 0 (no timestamp).
4212 * place event id # at far right for easier visual parsing. */
4213 for (i = 0; i < num_events; i++) {
4214 ev = iwl_read_targ_mem(priv, ptr);
4215 ptr += sizeof(u32);
4216 time = iwl_read_targ_mem(priv, ptr);
4217 ptr += sizeof(u32);
4218 if (mode == 0)
4219 IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4220 else {
4221 data = iwl_read_targ_mem(priv, ptr);
4222 ptr += sizeof(u32);
4223 IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4224 }
4225 }
4226 }
4227
4228 static void iwl4965_dump_nic_event_log(struct iwl_priv *priv)
4229 {
4230 int rc;
4231 u32 base; /* SRAM byte address of event log header */
4232 u32 capacity; /* event log capacity in # entries */
4233 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
4234 u32 num_wraps; /* # times uCode wrapped to top of log */
4235 u32 next_entry; /* index of next entry to be written by uCode */
4236 u32 size; /* # entries that we'll print */
4237
4238 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4239 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
4240 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4241 return;
4242 }
4243
4244 rc = iwl_grab_nic_access(priv);
4245 if (rc) {
4246 IWL_WARNING("Can not read from adapter at this time.\n");
4247 return;
4248 }
4249
4250 /* event log header */
4251 capacity = iwl_read_targ_mem(priv, base);
4252 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
4253 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
4254 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
4255
4256 size = num_wraps ? capacity : next_entry;
4257
4258 /* bail out if nothing in log */
4259 if (size == 0) {
4260 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4261 iwl_release_nic_access(priv);
4262 return;
4263 }
4264
4265 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4266 size, num_wraps);
4267
4268 /* if uCode has wrapped back to top of log, start at the oldest entry,
4269 * i.e the next one that uCode would fill. */
4270 if (num_wraps)
4271 iwl4965_print_event_log(priv, next_entry,
4272 capacity - next_entry, mode);
4273
4274 /* (then/else) start at top of log */
4275 iwl4965_print_event_log(priv, 0, next_entry, mode);
4276
4277 iwl_release_nic_access(priv);
4278 }
4279
4280 /**
4281 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
4282 */
4283 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
4284 {
4285 /* Set the FW error flag -- cleared on iwl4965_down */
4286 set_bit(STATUS_FW_ERROR, &priv->status);
4287
4288 /* Cancel currently queued command. */
4289 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4290
4291 #ifdef CONFIG_IWLWIFI_DEBUG
4292 if (iwl_debug_level & IWL_DL_FW_ERRORS) {
4293 iwl4965_dump_nic_error_log(priv);
4294 iwl4965_dump_nic_event_log(priv);
4295 iwl4965_print_rx_config_cmd(&priv->staging_rxon);
4296 }
4297 #endif
4298
4299 wake_up_interruptible(&priv->wait_command_queue);
4300
4301 /* Keep the restart process from trying to send host
4302 * commands by clearing the INIT status bit */
4303 clear_bit(STATUS_READY, &priv->status);
4304
4305 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4306 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4307 "Restarting adapter due to uCode error.\n");
4308
4309 if (iwl_is_associated(priv)) {
4310 memcpy(&priv->recovery_rxon, &priv->active_rxon,
4311 sizeof(priv->recovery_rxon));
4312 priv->error_recovering = 1;
4313 }
4314 queue_work(priv->workqueue, &priv->restart);
4315 }
4316 }
4317
4318 static void iwl4965_error_recovery(struct iwl_priv *priv)
4319 {
4320 unsigned long flags;
4321
4322 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4323 sizeof(priv->staging_rxon));
4324 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4325 iwl4965_commit_rxon(priv);
4326
4327 iwl4965_rxon_add_station(priv, priv->bssid, 1);
4328
4329 spin_lock_irqsave(&priv->lock, flags);
4330 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4331 priv->error_recovering = 0;
4332 spin_unlock_irqrestore(&priv->lock, flags);
4333 }
4334
4335 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
4336 {
4337 u32 inta, handled = 0;
4338 u32 inta_fh;
4339 unsigned long flags;
4340 #ifdef CONFIG_IWLWIFI_DEBUG
4341 u32 inta_mask;
4342 #endif
4343
4344 spin_lock_irqsave(&priv->lock, flags);
4345
4346 /* Ack/clear/reset pending uCode interrupts.
4347 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4348 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
4349 inta = iwl_read32(priv, CSR_INT);
4350 iwl_write32(priv, CSR_INT, inta);
4351
4352 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4353 * Any new interrupts that happen after this, either while we're
4354 * in this tasklet, or later, will show up in next ISR/tasklet. */
4355 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4356 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4357
4358 #ifdef CONFIG_IWLWIFI_DEBUG
4359 if (iwl_debug_level & IWL_DL_ISR) {
4360 /* just for debug */
4361 inta_mask = iwl_read32(priv, CSR_INT_MASK);
4362 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4363 inta, inta_mask, inta_fh);
4364 }
4365 #endif
4366
4367 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4368 * atomic, make sure that inta covers all the interrupts that
4369 * we've discovered, even if FH interrupt came in just after
4370 * reading CSR_INT. */
4371 if (inta_fh & CSR49_FH_INT_RX_MASK)
4372 inta |= CSR_INT_BIT_FH_RX;
4373 if (inta_fh & CSR49_FH_INT_TX_MASK)
4374 inta |= CSR_INT_BIT_FH_TX;
4375
4376 /* Now service all interrupt bits discovered above. */
4377 if (inta & CSR_INT_BIT_HW_ERR) {
4378 IWL_ERROR("Microcode HW error detected. Restarting.\n");
4379
4380 /* Tell the device to stop sending interrupts */
4381 iwl4965_disable_interrupts(priv);
4382
4383 iwl4965_irq_handle_error(priv);
4384
4385 handled |= CSR_INT_BIT_HW_ERR;
4386
4387 spin_unlock_irqrestore(&priv->lock, flags);
4388
4389 return;
4390 }
4391
4392 #ifdef CONFIG_IWLWIFI_DEBUG
4393 if (iwl_debug_level & (IWL_DL_ISR)) {
4394 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4395 if (inta & CSR_INT_BIT_SCD)
4396 IWL_DEBUG_ISR("Scheduler finished to transmit "
4397 "the frame/frames.\n");
4398
4399 /* Alive notification via Rx interrupt will do the real work */
4400 if (inta & CSR_INT_BIT_ALIVE)
4401 IWL_DEBUG_ISR("Alive interrupt\n");
4402 }
4403 #endif
4404 /* Safely ignore these bits for debug checks below */
4405 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
4406
4407 /* HW RF KILL switch toggled */
4408 if (inta & CSR_INT_BIT_RF_KILL) {
4409 int hw_rf_kill = 0;
4410 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
4411 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
4412 hw_rf_kill = 1;
4413
4414 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
4415 "RF_KILL bit toggled to %s.\n",
4416 hw_rf_kill ? "disable radio":"enable radio");
4417
4418 /* Queue restart only if RF_KILL switch was set to "kill"
4419 * when we loaded driver, and is now set to "enable".
4420 * After we're Alive, RF_KILL gets handled by
4421 * iwl4965_rx_card_state_notif() */
4422 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
4423 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4424 queue_work(priv->workqueue, &priv->restart);
4425 }
4426
4427 handled |= CSR_INT_BIT_RF_KILL;
4428 }
4429
4430 /* Chip got too hot and stopped itself */
4431 if (inta & CSR_INT_BIT_CT_KILL) {
4432 IWL_ERROR("Microcode CT kill error detected.\n");
4433 handled |= CSR_INT_BIT_CT_KILL;
4434 }
4435
4436 /* Error detected by uCode */
4437 if (inta & CSR_INT_BIT_SW_ERR) {
4438 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
4439 inta);
4440 iwl4965_irq_handle_error(priv);
4441 handled |= CSR_INT_BIT_SW_ERR;
4442 }
4443
4444 /* uCode wakes up after power-down sleep */
4445 if (inta & CSR_INT_BIT_WAKEUP) {
4446 IWL_DEBUG_ISR("Wakeup interrupt\n");
4447 iwl4965_rx_queue_update_write_ptr(priv, &priv->rxq);
4448 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]);
4449 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]);
4450 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]);
4451 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]);
4452 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]);
4453 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]);
4454
4455 handled |= CSR_INT_BIT_WAKEUP;
4456 }
4457
4458 /* All uCode command responses, including Tx command responses,
4459 * Rx "responses" (frame-received notification), and other
4460 * notifications from uCode come through here*/
4461 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
4462 iwl4965_rx_handle(priv);
4463 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
4464 }
4465
4466 if (inta & CSR_INT_BIT_FH_TX) {
4467 IWL_DEBUG_ISR("Tx interrupt\n");
4468 handled |= CSR_INT_BIT_FH_TX;
4469 }
4470
4471 if (inta & ~handled)
4472 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
4473
4474 if (inta & ~CSR_INI_SET_MASK) {
4475 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
4476 inta & ~CSR_INI_SET_MASK);
4477 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
4478 }
4479
4480 /* Re-enable all interrupts */
4481 /* only Re-enable if diabled by irq */
4482 if (test_bit(STATUS_INT_ENABLED, &priv->status))
4483 iwl4965_enable_interrupts(priv);
4484
4485 #ifdef CONFIG_IWLWIFI_DEBUG
4486 if (iwl_debug_level & (IWL_DL_ISR)) {
4487 inta = iwl_read32(priv, CSR_INT);
4488 inta_mask = iwl_read32(priv, CSR_INT_MASK);
4489 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4490 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4491 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
4492 }
4493 #endif
4494 spin_unlock_irqrestore(&priv->lock, flags);
4495 }
4496
4497 static irqreturn_t iwl4965_isr(int irq, void *data)
4498 {
4499 struct iwl_priv *priv = data;
4500 u32 inta, inta_mask;
4501 u32 inta_fh;
4502 if (!priv)
4503 return IRQ_NONE;
4504
4505 spin_lock(&priv->lock);
4506
4507 /* Disable (but don't clear!) interrupts here to avoid
4508 * back-to-back ISRs and sporadic interrupts from our NIC.
4509 * If we have something to service, the tasklet will re-enable ints.
4510 * If we *don't* have something, we'll re-enable before leaving here. */
4511 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
4512 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
4513
4514 /* Discover which interrupts are active/pending */
4515 inta = iwl_read32(priv, CSR_INT);
4516 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4517
4518 /* Ignore interrupt if there's nothing in NIC to service.
4519 * This may be due to IRQ shared with another device,
4520 * or due to sporadic interrupts thrown from our NIC. */
4521 if (!inta && !inta_fh) {
4522 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4523 goto none;
4524 }
4525
4526 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
4527 /* Hardware disappeared. It might have already raised
4528 * an interrupt */
4529 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
4530 goto unplugged;
4531 }
4532
4533 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4534 inta, inta_mask, inta_fh);
4535
4536 inta &= ~CSR_INT_BIT_SCD;
4537
4538 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
4539 if (likely(inta || inta_fh))
4540 tasklet_schedule(&priv->irq_tasklet);
4541
4542 unplugged:
4543 spin_unlock(&priv->lock);
4544 return IRQ_HANDLED;
4545
4546 none:
4547 /* re-enable interrupts here since we don't have anything to service. */
4548 /* only Re-enable if diabled by irq */
4549 if (test_bit(STATUS_INT_ENABLED, &priv->status))
4550 iwl4965_enable_interrupts(priv);
4551 spin_unlock(&priv->lock);
4552 return IRQ_NONE;
4553 }
4554
4555 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
4556 * sending probe req. This should be set long enough to hear probe responses
4557 * from more than one AP. */
4558 #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
4559 #define IWL_ACTIVE_DWELL_TIME_52 (10)
4560
4561 /* For faster active scanning, scan will move to the next channel if fewer than
4562 * PLCP_QUIET_THRESH packets are heard on this channel within
4563 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
4564 * time if it's a quiet channel (nothing responded to our probe, and there's
4565 * no other traffic).
4566 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
4567 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
4568 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
4569
4570 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
4571 * Must be set longer than active dwell time.
4572 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
4573 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
4574 #define IWL_PASSIVE_DWELL_TIME_52 (10)
4575 #define IWL_PASSIVE_DWELL_BASE (100)
4576 #define IWL_CHANNEL_TUNE_TIME 5
4577
4578 static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
4579 enum ieee80211_band band)
4580 {
4581 if (band == IEEE80211_BAND_5GHZ)
4582 return IWL_ACTIVE_DWELL_TIME_52;
4583 else
4584 return IWL_ACTIVE_DWELL_TIME_24;
4585 }
4586
4587 static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
4588 enum ieee80211_band band)
4589 {
4590 u16 active = iwl4965_get_active_dwell_time(priv, band);
4591 u16 passive = (band != IEEE80211_BAND_5GHZ) ?
4592 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
4593 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
4594
4595 if (iwl_is_associated(priv)) {
4596 /* If we're associated, we clamp the maximum passive
4597 * dwell time to be 98% of the beacon interval (minus
4598 * 2 * channel tune time) */
4599 passive = priv->beacon_int;
4600 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
4601 passive = IWL_PASSIVE_DWELL_BASE;
4602 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
4603 }
4604
4605 if (passive <= active)
4606 passive = active + 1;
4607
4608 return passive;
4609 }
4610
4611 static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
4612 enum ieee80211_band band,
4613 u8 is_active, u8 direct_mask,
4614 struct iwl4965_scan_channel *scan_ch)
4615 {
4616 const struct ieee80211_channel *channels = NULL;
4617 const struct ieee80211_supported_band *sband;
4618 const struct iwl_channel_info *ch_info;
4619 u16 passive_dwell = 0;
4620 u16 active_dwell = 0;
4621 int added, i;
4622
4623 sband = iwl4965_get_hw_mode(priv, band);
4624 if (!sband)
4625 return 0;
4626
4627 channels = sband->channels;
4628
4629 active_dwell = iwl4965_get_active_dwell_time(priv, band);
4630 passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
4631
4632 for (i = 0, added = 0; i < sband->n_channels; i++) {
4633 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
4634 continue;
4635
4636 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
4637
4638 ch_info = iwl_get_channel_info(priv, band,
4639 scan_ch->channel);
4640 if (!is_channel_valid(ch_info)) {
4641 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
4642 scan_ch->channel);
4643 continue;
4644 }
4645
4646 if (!is_active || is_channel_passive(ch_info) ||
4647 (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
4648 scan_ch->type = 0; /* passive */
4649 else
4650 scan_ch->type = 1; /* active */
4651
4652 if (scan_ch->type & 1)
4653 scan_ch->type |= (direct_mask << 1);
4654
4655 if (is_channel_narrow(ch_info))
4656 scan_ch->type |= (1 << 7);
4657
4658 scan_ch->active_dwell = cpu_to_le16(active_dwell);
4659 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
4660
4661 /* Set txpower levels to defaults */
4662 scan_ch->tpc.dsp_atten = 110;
4663 /* scan_pwr_info->tpc.dsp_atten; */
4664
4665 /*scan_pwr_info->tpc.tx_gain; */
4666 if (band == IEEE80211_BAND_5GHZ)
4667 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
4668 else {
4669 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
4670 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
4671 * power level:
4672 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
4673 */
4674 }
4675
4676 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
4677 scan_ch->channel,
4678 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
4679 (scan_ch->type & 1) ?
4680 active_dwell : passive_dwell);
4681
4682 scan_ch++;
4683 added++;
4684 }
4685
4686 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
4687 return added;
4688 }
4689
4690 static void iwl4965_init_hw_rates(struct iwl_priv *priv,
4691 struct ieee80211_rate *rates)
4692 {
4693 int i;
4694
4695 for (i = 0; i < IWL_RATE_COUNT; i++) {
4696 rates[i].bitrate = iwl4965_rates[i].ieee * 5;
4697 rates[i].hw_value = i; /* Rate scaling will work on indexes */
4698 rates[i].hw_value_short = i;
4699 rates[i].flags = 0;
4700 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
4701 /*
4702 * If CCK != 1M then set short preamble rate flag.
4703 */
4704 rates[i].flags |=
4705 (iwl4965_rates[i].plcp == IWL_RATE_1M_PLCP) ?
4706 0 : IEEE80211_RATE_SHORT_PREAMBLE;
4707 }
4708 }
4709 }
4710
4711 /**
4712 * iwl4965_init_geos - Initialize mac80211's geo/channel info based from eeprom
4713 */
4714 int iwl4965_init_geos(struct iwl_priv *priv)
4715 {
4716 struct iwl_channel_info *ch;
4717 struct ieee80211_supported_band *sband;
4718 struct ieee80211_channel *channels;
4719 struct ieee80211_channel *geo_ch;
4720 struct ieee80211_rate *rates;
4721 int i = 0;
4722
4723 if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
4724 priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
4725 IWL_DEBUG_INFO("Geography modes already initialized.\n");
4726 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4727 return 0;
4728 }
4729
4730 channels = kzalloc(sizeof(struct ieee80211_channel) *
4731 priv->channel_count, GFP_KERNEL);
4732 if (!channels)
4733 return -ENOMEM;
4734
4735 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
4736 GFP_KERNEL);
4737 if (!rates) {
4738 kfree(channels);
4739 return -ENOMEM;
4740 }
4741
4742 /* 5.2GHz channels start after the 2.4GHz channels */
4743 sband = &priv->bands[IEEE80211_BAND_5GHZ];
4744 sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
4745 /* just OFDM */
4746 sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
4747 sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
4748
4749 iwl4965_init_ht_hw_capab(priv, &sband->ht_info, IEEE80211_BAND_5GHZ);
4750
4751 sband = &priv->bands[IEEE80211_BAND_2GHZ];
4752 sband->channels = channels;
4753 /* OFDM & CCK */
4754 sband->bitrates = rates;
4755 sband->n_bitrates = IWL_RATE_COUNT;
4756
4757 iwl4965_init_ht_hw_capab(priv, &sband->ht_info, IEEE80211_BAND_2GHZ);
4758
4759 priv->ieee_channels = channels;
4760 priv->ieee_rates = rates;
4761
4762 iwl4965_init_hw_rates(priv, rates);
4763
4764 for (i = 0; i < priv->channel_count; i++) {
4765 ch = &priv->channel_info[i];
4766
4767 /* FIXME: might be removed if scan is OK */
4768 if (!is_channel_valid(ch))
4769 continue;
4770
4771 if (is_channel_a_band(ch))
4772 sband = &priv->bands[IEEE80211_BAND_5GHZ];
4773 else
4774 sband = &priv->bands[IEEE80211_BAND_2GHZ];
4775
4776 geo_ch = &sband->channels[sband->n_channels++];
4777
4778 geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
4779 geo_ch->max_power = ch->max_power_avg;
4780 geo_ch->max_antenna_gain = 0xff;
4781 geo_ch->hw_value = ch->channel;
4782
4783 if (is_channel_valid(ch)) {
4784 if (!(ch->flags & EEPROM_CHANNEL_IBSS))
4785 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
4786
4787 if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
4788 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
4789
4790 if (ch->flags & EEPROM_CHANNEL_RADAR)
4791 geo_ch->flags |= IEEE80211_CHAN_RADAR;
4792
4793 if (ch->max_power_avg > priv->max_channel_txpower_limit)
4794 priv->max_channel_txpower_limit =
4795 ch->max_power_avg;
4796 } else {
4797 geo_ch->flags |= IEEE80211_CHAN_DISABLED;
4798 }
4799
4800 /* Save flags for reg domain usage */
4801 geo_ch->orig_flags = geo_ch->flags;
4802
4803 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
4804 ch->channel, geo_ch->center_freq,
4805 is_channel_a_band(ch) ? "5.2" : "2.4",
4806 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
4807 "restricted" : "valid",
4808 geo_ch->flags);
4809 }
4810
4811 if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
4812 priv->cfg->sku & IWL_SKU_A) {
4813 printk(KERN_INFO DRV_NAME
4814 ": Incorrectly detected BG card as ABG. Please send "
4815 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
4816 priv->pci_dev->device, priv->pci_dev->subsystem_device);
4817 priv->cfg->sku &= ~IWL_SKU_A;
4818 }
4819
4820 printk(KERN_INFO DRV_NAME
4821 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
4822 priv->bands[IEEE80211_BAND_2GHZ].n_channels,
4823 priv->bands[IEEE80211_BAND_5GHZ].n_channels);
4824
4825 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
4826 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
4827 &priv->bands[IEEE80211_BAND_2GHZ];
4828 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
4829 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
4830 &priv->bands[IEEE80211_BAND_5GHZ];
4831
4832 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4833
4834 return 0;
4835 }
4836
4837 /*
4838 * iwl4965_free_geos - undo allocations in iwl4965_init_geos
4839 */
4840 void iwl4965_free_geos(struct iwl_priv *priv)
4841 {
4842 kfree(priv->ieee_channels);
4843 kfree(priv->ieee_rates);
4844 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
4845 }
4846
4847 /******************************************************************************
4848 *
4849 * uCode download functions
4850 *
4851 ******************************************************************************/
4852
4853 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
4854 {
4855 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
4856 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
4857 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
4858 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
4859 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
4860 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
4861 }
4862
4863 /**
4864 * iwl4965_verify_inst_full - verify runtime uCode image in card vs. host,
4865 * looking at all data.
4866 */
4867 static int iwl4965_verify_inst_full(struct iwl_priv *priv, __le32 *image,
4868 u32 len)
4869 {
4870 u32 val;
4871 u32 save_len = len;
4872 int rc = 0;
4873 u32 errcnt;
4874
4875 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
4876
4877 rc = iwl_grab_nic_access(priv);
4878 if (rc)
4879 return rc;
4880
4881 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
4882
4883 errcnt = 0;
4884 for (; len > 0; len -= sizeof(u32), image++) {
4885 /* read data comes through single port, auto-incr addr */
4886 /* NOTE: Use the debugless read so we don't flood kernel log
4887 * if IWL_DL_IO is set */
4888 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
4889 if (val != le32_to_cpu(*image)) {
4890 IWL_ERROR("uCode INST section is invalid at "
4891 "offset 0x%x, is 0x%x, s/b 0x%x\n",
4892 save_len - len, val, le32_to_cpu(*image));
4893 rc = -EIO;
4894 errcnt++;
4895 if (errcnt >= 20)
4896 break;
4897 }
4898 }
4899
4900 iwl_release_nic_access(priv);
4901
4902 if (!errcnt)
4903 IWL_DEBUG_INFO
4904 ("ucode image in INSTRUCTION memory is good\n");
4905
4906 return rc;
4907 }
4908
4909
4910 /**
4911 * iwl4965_verify_inst_sparse - verify runtime uCode image in card vs. host,
4912 * using sample data 100 bytes apart. If these sample points are good,
4913 * it's a pretty good bet that everything between them is good, too.
4914 */
4915 static int iwl4965_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
4916 {
4917 u32 val;
4918 int rc = 0;
4919 u32 errcnt = 0;
4920 u32 i;
4921
4922 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
4923
4924 rc = iwl_grab_nic_access(priv);
4925 if (rc)
4926 return rc;
4927
4928 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
4929 /* read data comes through single port, auto-incr addr */
4930 /* NOTE: Use the debugless read so we don't flood kernel log
4931 * if IWL_DL_IO is set */
4932 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
4933 i + RTC_INST_LOWER_BOUND);
4934 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
4935 if (val != le32_to_cpu(*image)) {
4936 #if 0 /* Enable this if you want to see details */
4937 IWL_ERROR("uCode INST section is invalid at "
4938 "offset 0x%x, is 0x%x, s/b 0x%x\n",
4939 i, val, *image);
4940 #endif
4941 rc = -EIO;
4942 errcnt++;
4943 if (errcnt >= 3)
4944 break;
4945 }
4946 }
4947
4948 iwl_release_nic_access(priv);
4949
4950 return rc;
4951 }
4952
4953
4954 /**
4955 * iwl4965_verify_ucode - determine which instruction image is in SRAM,
4956 * and verify its contents
4957 */
4958 static int iwl4965_verify_ucode(struct iwl_priv *priv)
4959 {
4960 __le32 *image;
4961 u32 len;
4962 int rc = 0;
4963
4964 /* Try bootstrap */
4965 image = (__le32 *)priv->ucode_boot.v_addr;
4966 len = priv->ucode_boot.len;
4967 rc = iwl4965_verify_inst_sparse(priv, image, len);
4968 if (rc == 0) {
4969 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
4970 return 0;
4971 }
4972
4973 /* Try initialize */
4974 image = (__le32 *)priv->ucode_init.v_addr;
4975 len = priv->ucode_init.len;
4976 rc = iwl4965_verify_inst_sparse(priv, image, len);
4977 if (rc == 0) {
4978 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
4979 return 0;
4980 }
4981
4982 /* Try runtime/protocol */
4983 image = (__le32 *)priv->ucode_code.v_addr;
4984 len = priv->ucode_code.len;
4985 rc = iwl4965_verify_inst_sparse(priv, image, len);
4986 if (rc == 0) {
4987 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
4988 return 0;
4989 }
4990
4991 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
4992
4993 /* Since nothing seems to match, show first several data entries in
4994 * instruction SRAM, so maybe visual inspection will give a clue.
4995 * Selection of bootstrap image (vs. other images) is arbitrary. */
4996 image = (__le32 *)priv->ucode_boot.v_addr;
4997 len = priv->ucode_boot.len;
4998 rc = iwl4965_verify_inst_full(priv, image, len);
4999
5000 return rc;
5001 }
5002
5003 static void iwl4965_nic_start(struct iwl_priv *priv)
5004 {
5005 /* Remove all resets to allow NIC to operate */
5006 iwl_write32(priv, CSR_RESET, 0);
5007 }
5008
5009
5010 /**
5011 * iwl4965_read_ucode - Read uCode images from disk file.
5012 *
5013 * Copy into buffers for card to fetch via bus-mastering
5014 */
5015 static int iwl4965_read_ucode(struct iwl_priv *priv)
5016 {
5017 struct iwl4965_ucode *ucode;
5018 int ret;
5019 const struct firmware *ucode_raw;
5020 const char *name = priv->cfg->fw_name;
5021 u8 *src;
5022 size_t len;
5023 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
5024
5025 /* Ask kernel firmware_class module to get the boot firmware off disk.
5026 * request_firmware() is synchronous, file is in memory on return. */
5027 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
5028 if (ret < 0) {
5029 IWL_ERROR("%s firmware file req failed: Reason %d\n",
5030 name, ret);
5031 goto error;
5032 }
5033
5034 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
5035 name, ucode_raw->size);
5036
5037 /* Make sure that we got at least our header! */
5038 if (ucode_raw->size < sizeof(*ucode)) {
5039 IWL_ERROR("File size way too small!\n");
5040 ret = -EINVAL;
5041 goto err_release;
5042 }
5043
5044 /* Data from ucode file: header followed by uCode images */
5045 ucode = (void *)ucode_raw->data;
5046
5047 ver = le32_to_cpu(ucode->ver);
5048 inst_size = le32_to_cpu(ucode->inst_size);
5049 data_size = le32_to_cpu(ucode->data_size);
5050 init_size = le32_to_cpu(ucode->init_size);
5051 init_data_size = le32_to_cpu(ucode->init_data_size);
5052 boot_size = le32_to_cpu(ucode->boot_size);
5053
5054 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
5055 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
5056 inst_size);
5057 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
5058 data_size);
5059 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
5060 init_size);
5061 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
5062 init_data_size);
5063 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
5064 boot_size);
5065
5066 /* Verify size of file vs. image size info in file's header */
5067 if (ucode_raw->size < sizeof(*ucode) +
5068 inst_size + data_size + init_size +
5069 init_data_size + boot_size) {
5070
5071 IWL_DEBUG_INFO("uCode file size %d too small\n",
5072 (int)ucode_raw->size);
5073 ret = -EINVAL;
5074 goto err_release;
5075 }
5076
5077 /* Verify that uCode images will fit in card's SRAM */
5078 if (inst_size > IWL_MAX_INST_SIZE) {
5079 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
5080 inst_size);
5081 ret = -EINVAL;
5082 goto err_release;
5083 }
5084
5085 if (data_size > IWL_MAX_DATA_SIZE) {
5086 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
5087 data_size);
5088 ret = -EINVAL;
5089 goto err_release;
5090 }
5091 if (init_size > IWL_MAX_INST_SIZE) {
5092 IWL_DEBUG_INFO
5093 ("uCode init instr len %d too large to fit in\n",
5094 init_size);
5095 ret = -EINVAL;
5096 goto err_release;
5097 }
5098 if (init_data_size > IWL_MAX_DATA_SIZE) {
5099 IWL_DEBUG_INFO
5100 ("uCode init data len %d too large to fit in\n",
5101 init_data_size);
5102 ret = -EINVAL;
5103 goto err_release;
5104 }
5105 if (boot_size > IWL_MAX_BSM_SIZE) {
5106 IWL_DEBUG_INFO
5107 ("uCode boot instr len %d too large to fit in\n",
5108 boot_size);
5109 ret = -EINVAL;
5110 goto err_release;
5111 }
5112
5113 /* Allocate ucode buffers for card's bus-master loading ... */
5114
5115 /* Runtime instructions and 2 copies of data:
5116 * 1) unmodified from disk
5117 * 2) backup cache for save/restore during power-downs */
5118 priv->ucode_code.len = inst_size;
5119 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
5120
5121 priv->ucode_data.len = data_size;
5122 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
5123
5124 priv->ucode_data_backup.len = data_size;
5125 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5126
5127 /* Initialization instructions and data */
5128 if (init_size && init_data_size) {
5129 priv->ucode_init.len = init_size;
5130 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
5131
5132 priv->ucode_init_data.len = init_data_size;
5133 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5134
5135 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
5136 goto err_pci_alloc;
5137 }
5138
5139 /* Bootstrap (instructions only, no data) */
5140 if (boot_size) {
5141 priv->ucode_boot.len = boot_size;
5142 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
5143
5144 if (!priv->ucode_boot.v_addr)
5145 goto err_pci_alloc;
5146 }
5147
5148 /* Copy images into buffers for card's bus-master reads ... */
5149
5150 /* Runtime instructions (first block of data in file) */
5151 src = &ucode->data[0];
5152 len = priv->ucode_code.len;
5153 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
5154 memcpy(priv->ucode_code.v_addr, src, len);
5155 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
5156 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
5157
5158 /* Runtime data (2nd block)
5159 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
5160 src = &ucode->data[inst_size];
5161 len = priv->ucode_data.len;
5162 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
5163 memcpy(priv->ucode_data.v_addr, src, len);
5164 memcpy(priv->ucode_data_backup.v_addr, src, len);
5165
5166 /* Initialization instructions (3rd block) */
5167 if (init_size) {
5168 src = &ucode->data[inst_size + data_size];
5169 len = priv->ucode_init.len;
5170 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
5171 len);
5172 memcpy(priv->ucode_init.v_addr, src, len);
5173 }
5174
5175 /* Initialization data (4th block) */
5176 if (init_data_size) {
5177 src = &ucode->data[inst_size + data_size + init_size];
5178 len = priv->ucode_init_data.len;
5179 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
5180 len);
5181 memcpy(priv->ucode_init_data.v_addr, src, len);
5182 }
5183
5184 /* Bootstrap instructions (5th block) */
5185 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
5186 len = priv->ucode_boot.len;
5187 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
5188 memcpy(priv->ucode_boot.v_addr, src, len);
5189
5190 /* We have our copies now, allow OS release its copies */
5191 release_firmware(ucode_raw);
5192 return 0;
5193
5194 err_pci_alloc:
5195 IWL_ERROR("failed to allocate pci memory\n");
5196 ret = -ENOMEM;
5197 iwl4965_dealloc_ucode_pci(priv);
5198
5199 err_release:
5200 release_firmware(ucode_raw);
5201
5202 error:
5203 return ret;
5204 }
5205
5206
5207 /**
5208 * iwl4965_set_ucode_ptrs - Set uCode address location
5209 *
5210 * Tell initialization uCode where to find runtime uCode.
5211 *
5212 * BSM registers initially contain pointers to initialization uCode.
5213 * We need to replace them to load runtime uCode inst and data,
5214 * and to save runtime data when powering down.
5215 */
5216 static int iwl4965_set_ucode_ptrs(struct iwl_priv *priv)
5217 {
5218 dma_addr_t pinst;
5219 dma_addr_t pdata;
5220 int rc = 0;
5221 unsigned long flags;
5222
5223 /* bits 35:4 for 4965 */
5224 pinst = priv->ucode_code.p_addr >> 4;
5225 pdata = priv->ucode_data_backup.p_addr >> 4;
5226
5227 spin_lock_irqsave(&priv->lock, flags);
5228 rc = iwl_grab_nic_access(priv);
5229 if (rc) {
5230 spin_unlock_irqrestore(&priv->lock, flags);
5231 return rc;
5232 }
5233
5234 /* Tell bootstrap uCode where to find image to load */
5235 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5236 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5237 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
5238 priv->ucode_data.len);
5239
5240 /* Inst bytecount must be last to set up, bit 31 signals uCode
5241 * that all new ptr/size info is in place */
5242 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
5243 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
5244
5245 iwl_release_nic_access(priv);
5246
5247 spin_unlock_irqrestore(&priv->lock, flags);
5248
5249 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
5250
5251 return rc;
5252 }
5253
5254 /**
5255 * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
5256 *
5257 * Called after REPLY_ALIVE notification received from "initialize" uCode.
5258 *
5259 * The 4965 "initialize" ALIVE reply contains calibration data for:
5260 * Voltage, temperature, and MIMO tx gain correction, now stored in priv
5261 * (3945 does not contain this data).
5262 *
5263 * Tell "initialize" uCode to go ahead and load the runtime uCode.
5264 */
5265 static void iwl4965_init_alive_start(struct iwl_priv *priv)
5266 {
5267 /* Check alive response for "valid" sign from uCode */
5268 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
5269 /* We had an error bringing up the hardware, so take it
5270 * all the way back down so we can try again */
5271 IWL_DEBUG_INFO("Initialize Alive failed.\n");
5272 goto restart;
5273 }
5274
5275 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
5276 * This is a paranoid check, because we would not have gotten the
5277 * "initialize" alive if code weren't properly loaded. */
5278 if (iwl4965_verify_ucode(priv)) {
5279 /* Runtime instruction load was bad;
5280 * take it all the way back down so we can try again */
5281 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
5282 goto restart;
5283 }
5284
5285 /* Calculate temperature */
5286 priv->temperature = iwl4965_get_temperature(priv);
5287
5288 /* Send pointers to protocol/runtime uCode image ... init code will
5289 * load and launch runtime uCode, which will send us another "Alive"
5290 * notification. */
5291 IWL_DEBUG_INFO("Initialization Alive received.\n");
5292 if (iwl4965_set_ucode_ptrs(priv)) {
5293 /* Runtime instruction load won't happen;
5294 * take it all the way back down so we can try again */
5295 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
5296 goto restart;
5297 }
5298 return;
5299
5300 restart:
5301 queue_work(priv->workqueue, &priv->restart);
5302 }
5303
5304
5305 /**
5306 * iwl4965_alive_start - called after REPLY_ALIVE notification received
5307 * from protocol/runtime uCode (initialization uCode's
5308 * Alive gets handled by iwl4965_init_alive_start()).
5309 */
5310 static void iwl4965_alive_start(struct iwl_priv *priv)
5311 {
5312 int ret = 0;
5313
5314 IWL_DEBUG_INFO("Runtime Alive received.\n");
5315
5316 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
5317 /* We had an error bringing up the hardware, so take it
5318 * all the way back down so we can try again */
5319 IWL_DEBUG_INFO("Alive failed.\n");
5320 goto restart;
5321 }
5322
5323 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
5324 * This is a paranoid check, because we would not have gotten the
5325 * "runtime" alive if code weren't properly loaded. */
5326 if (iwl4965_verify_ucode(priv)) {
5327 /* Runtime instruction load was bad;
5328 * take it all the way back down so we can try again */
5329 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
5330 goto restart;
5331 }
5332
5333 iwlcore_clear_stations_table(priv);
5334
5335 ret = priv->cfg->ops->lib->alive_notify(priv);
5336 if (ret) {
5337 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
5338 ret);
5339 goto restart;
5340 }
5341
5342 /* After the ALIVE response, we can send host commands to 4965 uCode */
5343 set_bit(STATUS_ALIVE, &priv->status);
5344
5345 /* Clear out the uCode error bit if it is set */
5346 clear_bit(STATUS_FW_ERROR, &priv->status);
5347
5348 if (iwl_is_rfkill(priv))
5349 return;
5350
5351 ieee80211_start_queues(priv->hw);
5352
5353 priv->active_rate = priv->rates_mask;
5354 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
5355
5356 iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
5357
5358 if (iwl_is_associated(priv)) {
5359 struct iwl4965_rxon_cmd *active_rxon =
5360 (struct iwl4965_rxon_cmd *)(&priv->active_rxon);
5361
5362 memcpy(&priv->staging_rxon, &priv->active_rxon,
5363 sizeof(priv->staging_rxon));
5364 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5365 } else {
5366 /* Initialize our rx_config data */
5367 iwl4965_connection_init_rx_config(priv);
5368 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
5369 }
5370
5371 /* Configure Bluetooth device coexistence support */
5372 iwl4965_send_bt_config(priv);
5373
5374 /* Configure the adapter for unassociated operation */
5375 iwl4965_commit_rxon(priv);
5376
5377 /* At this point, the NIC is initialized and operational */
5378 priv->notif_missed_beacons = 0;
5379
5380 iwl4965_rf_kill_ct_config(priv);
5381
5382 iwl_leds_register(priv);
5383
5384 IWL_DEBUG_INFO("ALIVE processing complete.\n");
5385 set_bit(STATUS_READY, &priv->status);
5386 wake_up_interruptible(&priv->wait_command_queue);
5387
5388 if (priv->error_recovering)
5389 iwl4965_error_recovery(priv);
5390
5391 iwlcore_low_level_notify(priv, IWLCORE_START_EVT);
5392 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
5393 return;
5394
5395 restart:
5396 queue_work(priv->workqueue, &priv->restart);
5397 }
5398
5399 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv);
5400
5401 static void __iwl4965_down(struct iwl_priv *priv)
5402 {
5403 unsigned long flags;
5404 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
5405 struct ieee80211_conf *conf = NULL;
5406
5407 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
5408
5409 conf = ieee80211_get_hw_conf(priv->hw);
5410
5411 if (!exit_pending)
5412 set_bit(STATUS_EXIT_PENDING, &priv->status);
5413
5414 iwl_leds_unregister(priv);
5415
5416 iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT);
5417
5418 iwlcore_clear_stations_table(priv);
5419
5420 /* Unblock any waiting calls */
5421 wake_up_interruptible_all(&priv->wait_command_queue);
5422
5423 /* Wipe out the EXIT_PENDING status bit if we are not actually
5424 * exiting the module */
5425 if (!exit_pending)
5426 clear_bit(STATUS_EXIT_PENDING, &priv->status);
5427
5428 /* stop and reset the on-board processor */
5429 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
5430
5431 /* tell the device to stop sending interrupts */
5432 spin_lock_irqsave(&priv->lock, flags);
5433 iwl4965_disable_interrupts(priv);
5434 spin_unlock_irqrestore(&priv->lock, flags);
5435 iwl_synchronize_irq(priv);
5436
5437 if (priv->mac80211_registered)
5438 ieee80211_stop_queues(priv->hw);
5439
5440 /* If we have not previously called iwl4965_init() then
5441 * clear all bits but the RF Kill and SUSPEND bits and return */
5442 if (!iwl_is_init(priv)) {
5443 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5444 STATUS_RF_KILL_HW |
5445 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5446 STATUS_RF_KILL_SW |
5447 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5448 STATUS_GEO_CONFIGURED |
5449 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5450 STATUS_IN_SUSPEND;
5451 goto exit;
5452 }
5453
5454 /* ...otherwise clear out all the status bits but the RF Kill and
5455 * SUSPEND bits and continue taking the NIC down. */
5456 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5457 STATUS_RF_KILL_HW |
5458 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5459 STATUS_RF_KILL_SW |
5460 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5461 STATUS_GEO_CONFIGURED |
5462 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5463 STATUS_IN_SUSPEND |
5464 test_bit(STATUS_FW_ERROR, &priv->status) <<
5465 STATUS_FW_ERROR;
5466
5467 spin_lock_irqsave(&priv->lock, flags);
5468 iwl_clear_bit(priv, CSR_GP_CNTRL,
5469 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
5470 spin_unlock_irqrestore(&priv->lock, flags);
5471
5472 iwl4965_hw_txq_ctx_stop(priv);
5473 iwl4965_hw_rxq_stop(priv);
5474
5475 spin_lock_irqsave(&priv->lock, flags);
5476 if (!iwl_grab_nic_access(priv)) {
5477 iwl_write_prph(priv, APMG_CLK_DIS_REG,
5478 APMG_CLK_VAL_DMA_CLK_RQT);
5479 iwl_release_nic_access(priv);
5480 }
5481 spin_unlock_irqrestore(&priv->lock, flags);
5482
5483 udelay(5);
5484
5485 iwl4965_hw_nic_stop_master(priv);
5486 iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
5487 iwl4965_hw_nic_reset(priv);
5488
5489 exit:
5490 memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
5491
5492 if (priv->ibss_beacon)
5493 dev_kfree_skb(priv->ibss_beacon);
5494 priv->ibss_beacon = NULL;
5495
5496 /* clear out any free frames */
5497 iwl4965_clear_free_frames(priv);
5498 }
5499
5500 static void iwl4965_down(struct iwl_priv *priv)
5501 {
5502 mutex_lock(&priv->mutex);
5503 __iwl4965_down(priv);
5504 mutex_unlock(&priv->mutex);
5505
5506 iwl4965_cancel_deferred_work(priv);
5507 }
5508
5509 #define MAX_HW_RESTARTS 5
5510
5511 static int __iwl4965_up(struct iwl_priv *priv)
5512 {
5513 int i;
5514 int ret;
5515
5516 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5517 IWL_WARNING("Exit pending; will not bring the NIC up\n");
5518 return -EIO;
5519 }
5520
5521 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
5522 IWL_WARNING("Radio disabled by SW RF kill (module "
5523 "parameter)\n");
5524 iwl_rfkill_set_hw_state(priv);
5525 return -ENODEV;
5526 }
5527
5528 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
5529 IWL_ERROR("ucode not available for device bringup\n");
5530 return -EIO;
5531 }
5532
5533 /* If platform's RF_KILL switch is NOT set to KILL */
5534 if (iwl_read32(priv, CSR_GP_CNTRL) &
5535 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
5536 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5537 else {
5538 set_bit(STATUS_RF_KILL_HW, &priv->status);
5539 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
5540 iwl_rfkill_set_hw_state(priv);
5541 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
5542 return -ENODEV;
5543 }
5544 }
5545
5546 iwl_rfkill_set_hw_state(priv);
5547 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
5548
5549 ret = priv->cfg->ops->lib->hw_nic_init(priv);
5550 if (ret) {
5551 IWL_ERROR("Unable to init nic\n");
5552 return ret;
5553 }
5554
5555 /* make sure rfkill handshake bits are cleared */
5556 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5557 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
5558 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
5559
5560 /* clear (again), then enable host interrupts */
5561 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
5562 iwl4965_enable_interrupts(priv);
5563
5564 /* really make sure rfkill handshake bits are cleared */
5565 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5566 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5567
5568 /* Copy original ucode data image from disk into backup cache.
5569 * This will be used to initialize the on-board processor's
5570 * data SRAM for a clean start when the runtime program first loads. */
5571 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
5572 priv->ucode_data.len);
5573
5574 /* We return success when we resume from suspend and rf_kill is on. */
5575 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
5576 return 0;
5577
5578 for (i = 0; i < MAX_HW_RESTARTS; i++) {
5579
5580 iwlcore_clear_stations_table(priv);
5581
5582 /* load bootstrap state machine,
5583 * load bootstrap program into processor's memory,
5584 * prepare to load the "initialize" uCode */
5585 ret = priv->cfg->ops->lib->load_ucode(priv);
5586
5587 if (ret) {
5588 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
5589 continue;
5590 }
5591
5592 /* start card; "initialize" will load runtime ucode */
5593 iwl4965_nic_start(priv);
5594
5595 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
5596
5597 return 0;
5598 }
5599
5600 set_bit(STATUS_EXIT_PENDING, &priv->status);
5601 __iwl4965_down(priv);
5602
5603 /* tried to restart and config the device for as long as our
5604 * patience could withstand */
5605 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
5606 return -EIO;
5607 }
5608
5609
5610 /*****************************************************************************
5611 *
5612 * Workqueue callbacks
5613 *
5614 *****************************************************************************/
5615
5616 static void iwl4965_bg_init_alive_start(struct work_struct *data)
5617 {
5618 struct iwl_priv *priv =
5619 container_of(data, struct iwl_priv, init_alive_start.work);
5620
5621 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5622 return;
5623
5624 mutex_lock(&priv->mutex);
5625 iwl4965_init_alive_start(priv);
5626 mutex_unlock(&priv->mutex);
5627 }
5628
5629 static void iwl4965_bg_alive_start(struct work_struct *data)
5630 {
5631 struct iwl_priv *priv =
5632 container_of(data, struct iwl_priv, alive_start.work);
5633
5634 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5635 return;
5636
5637 mutex_lock(&priv->mutex);
5638 iwl4965_alive_start(priv);
5639 mutex_unlock(&priv->mutex);
5640 }
5641
5642 static void iwl4965_bg_rf_kill(struct work_struct *work)
5643 {
5644 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
5645
5646 wake_up_interruptible(&priv->wait_command_queue);
5647
5648 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5649 return;
5650
5651 mutex_lock(&priv->mutex);
5652
5653 if (!iwl_is_rfkill(priv)) {
5654 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
5655 "HW and/or SW RF Kill no longer active, restarting "
5656 "device\n");
5657 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
5658 queue_work(priv->workqueue, &priv->restart);
5659 } else {
5660 /* make sure mac80211 stop sending Tx frame */
5661 if (priv->mac80211_registered)
5662 ieee80211_stop_queues(priv->hw);
5663
5664 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
5665 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
5666 "disabled by SW switch\n");
5667 else
5668 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
5669 "Kill switch must be turned off for "
5670 "wireless networking to work.\n");
5671 }
5672 iwl_rfkill_set_hw_state(priv);
5673
5674 mutex_unlock(&priv->mutex);
5675 }
5676
5677 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
5678
5679 static void iwl4965_bg_scan_check(struct work_struct *data)
5680 {
5681 struct iwl_priv *priv =
5682 container_of(data, struct iwl_priv, scan_check.work);
5683
5684 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5685 return;
5686
5687 mutex_lock(&priv->mutex);
5688 if (test_bit(STATUS_SCANNING, &priv->status) ||
5689 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
5690 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
5691 "Scan completion watchdog resetting adapter (%dms)\n",
5692 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
5693
5694 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
5695 iwl4965_send_scan_abort(priv);
5696 }
5697 mutex_unlock(&priv->mutex);
5698 }
5699
5700 static void iwl4965_bg_request_scan(struct work_struct *data)
5701 {
5702 struct iwl_priv *priv =
5703 container_of(data, struct iwl_priv, request_scan);
5704 struct iwl_host_cmd cmd = {
5705 .id = REPLY_SCAN_CMD,
5706 .len = sizeof(struct iwl4965_scan_cmd),
5707 .meta.flags = CMD_SIZE_HUGE,
5708 };
5709 struct iwl4965_scan_cmd *scan;
5710 struct ieee80211_conf *conf = NULL;
5711 u16 cmd_len;
5712 enum ieee80211_band band;
5713 u8 direct_mask;
5714 int ret = 0;
5715
5716 conf = ieee80211_get_hw_conf(priv->hw);
5717
5718 mutex_lock(&priv->mutex);
5719
5720 if (!iwl_is_ready(priv)) {
5721 IWL_WARNING("request scan called when driver not ready.\n");
5722 goto done;
5723 }
5724
5725 /* Make sure the scan wasn't cancelled before this queued work
5726 * was given the chance to run... */
5727 if (!test_bit(STATUS_SCANNING, &priv->status))
5728 goto done;
5729
5730 /* This should never be called or scheduled if there is currently
5731 * a scan active in the hardware. */
5732 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
5733 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
5734 "Ignoring second request.\n");
5735 ret = -EIO;
5736 goto done;
5737 }
5738
5739 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5740 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
5741 goto done;
5742 }
5743
5744 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
5745 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
5746 goto done;
5747 }
5748
5749 if (iwl_is_rfkill(priv)) {
5750 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
5751 goto done;
5752 }
5753
5754 if (!test_bit(STATUS_READY, &priv->status)) {
5755 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
5756 goto done;
5757 }
5758
5759 if (!priv->scan_bands) {
5760 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
5761 goto done;
5762 }
5763
5764 if (!priv->scan) {
5765 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
5766 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
5767 if (!priv->scan) {
5768 ret = -ENOMEM;
5769 goto done;
5770 }
5771 }
5772 scan = priv->scan;
5773 memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
5774
5775 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
5776 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
5777
5778 if (iwl_is_associated(priv)) {
5779 u16 interval = 0;
5780 u32 extra;
5781 u32 suspend_time = 100;
5782 u32 scan_suspend_time = 100;
5783 unsigned long flags;
5784
5785 IWL_DEBUG_INFO("Scanning while associated...\n");
5786
5787 spin_lock_irqsave(&priv->lock, flags);
5788 interval = priv->beacon_int;
5789 spin_unlock_irqrestore(&priv->lock, flags);
5790
5791 scan->suspend_time = 0;
5792 scan->max_out_time = cpu_to_le32(200 * 1024);
5793 if (!interval)
5794 interval = suspend_time;
5795
5796 extra = (suspend_time / interval) << 22;
5797 scan_suspend_time = (extra |
5798 ((suspend_time % interval) * 1024));
5799 scan->suspend_time = cpu_to_le32(scan_suspend_time);
5800 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
5801 scan_suspend_time, interval);
5802 }
5803
5804 /* We should add the ability for user to lock to PASSIVE ONLY */
5805 if (priv->one_direct_scan) {
5806 IWL_DEBUG_SCAN
5807 ("Kicking off one direct scan for '%s'\n",
5808 iwl4965_escape_essid(priv->direct_ssid,
5809 priv->direct_ssid_len));
5810 scan->direct_scan[0].id = WLAN_EID_SSID;
5811 scan->direct_scan[0].len = priv->direct_ssid_len;
5812 memcpy(scan->direct_scan[0].ssid,
5813 priv->direct_ssid, priv->direct_ssid_len);
5814 direct_mask = 1;
5815 } else if (!iwl_is_associated(priv) && priv->essid_len) {
5816 IWL_DEBUG_SCAN
5817 ("Kicking off one direct scan for '%s' when not associated\n",
5818 iwl4965_escape_essid(priv->essid, priv->essid_len));
5819 scan->direct_scan[0].id = WLAN_EID_SSID;
5820 scan->direct_scan[0].len = priv->essid_len;
5821 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
5822 direct_mask = 1;
5823 } else {
5824 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
5825 direct_mask = 0;
5826 }
5827
5828 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
5829 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
5830 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
5831
5832
5833 switch (priv->scan_bands) {
5834 case 2:
5835 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
5836 scan->tx_cmd.rate_n_flags =
5837 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
5838 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
5839
5840 scan->good_CRC_th = 0;
5841 band = IEEE80211_BAND_2GHZ;
5842 break;
5843
5844 case 1:
5845 scan->tx_cmd.rate_n_flags =
5846 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
5847 RATE_MCS_ANT_B_MSK);
5848 scan->good_CRC_th = IWL_GOOD_CRC_TH;
5849 band = IEEE80211_BAND_5GHZ;
5850 break;
5851
5852 default:
5853 IWL_WARNING("Invalid scan band count\n");
5854 goto done;
5855 }
5856
5857 /* We don't build a direct scan probe request; the uCode will do
5858 * that based on the direct_mask added to each channel entry */
5859 cmd_len = iwl4965_fill_probe_req(priv, band,
5860 (struct ieee80211_mgmt *)scan->data,
5861 IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
5862
5863 scan->tx_cmd.len = cpu_to_le16(cmd_len);
5864 /* select Rx chains */
5865
5866 /* Force use of chains B and C (0x6) for scan Rx.
5867 * Avoid A (0x1) because of its off-channel reception on A-band.
5868 * MIMO is not used here, but value is required to make uCode happy. */
5869 scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
5870 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
5871 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
5872 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
5873
5874 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
5875 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
5876
5877 if (direct_mask)
5878 scan->channel_count =
5879 iwl4965_get_channels_for_scan(
5880 priv, band, 1, /* active */
5881 direct_mask,
5882 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
5883 else
5884 scan->channel_count =
5885 iwl4965_get_channels_for_scan(
5886 priv, band, 0, /* passive */
5887 direct_mask,
5888 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
5889
5890 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
5891 scan->channel_count * sizeof(struct iwl4965_scan_channel);
5892 cmd.data = scan;
5893 scan->len = cpu_to_le16(cmd.len);
5894
5895 set_bit(STATUS_SCAN_HW, &priv->status);
5896 ret = iwl_send_cmd_sync(priv, &cmd);
5897 if (ret)
5898 goto done;
5899
5900 queue_delayed_work(priv->workqueue, &priv->scan_check,
5901 IWL_SCAN_CHECK_WATCHDOG);
5902
5903 mutex_unlock(&priv->mutex);
5904 return;
5905
5906 done:
5907 /* inform mac80211 scan aborted */
5908 queue_work(priv->workqueue, &priv->scan_completed);
5909 mutex_unlock(&priv->mutex);
5910 }
5911
5912 static void iwl4965_bg_up(struct work_struct *data)
5913 {
5914 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
5915
5916 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5917 return;
5918
5919 mutex_lock(&priv->mutex);
5920 __iwl4965_up(priv);
5921 mutex_unlock(&priv->mutex);
5922 }
5923
5924 static void iwl4965_bg_restart(struct work_struct *data)
5925 {
5926 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
5927
5928 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5929 return;
5930
5931 iwl4965_down(priv);
5932 queue_work(priv->workqueue, &priv->up);
5933 }
5934
5935 static void iwl4965_bg_rx_replenish(struct work_struct *data)
5936 {
5937 struct iwl_priv *priv =
5938 container_of(data, struct iwl_priv, rx_replenish);
5939
5940 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5941 return;
5942
5943 mutex_lock(&priv->mutex);
5944 iwl4965_rx_replenish(priv);
5945 mutex_unlock(&priv->mutex);
5946 }
5947
5948 #define IWL_DELAY_NEXT_SCAN (HZ*2)
5949
5950 static void iwl4965_post_associate(struct iwl_priv *priv)
5951 {
5952 struct ieee80211_conf *conf = NULL;
5953 int ret = 0;
5954 DECLARE_MAC_BUF(mac);
5955
5956 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
5957 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
5958 return;
5959 }
5960
5961 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
5962 priv->assoc_id,
5963 print_mac(mac, priv->active_rxon.bssid_addr));
5964
5965
5966 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5967 return;
5968
5969
5970 if (!priv->vif || !priv->is_open)
5971 return;
5972
5973 iwl4965_scan_cancel_timeout(priv, 200);
5974
5975 conf = ieee80211_get_hw_conf(priv->hw);
5976
5977 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5978 iwl4965_commit_rxon(priv);
5979
5980 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
5981 iwl4965_setup_rxon_timing(priv);
5982 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
5983 sizeof(priv->rxon_timing), &priv->rxon_timing);
5984 if (ret)
5985 IWL_WARNING("REPLY_RXON_TIMING failed - "
5986 "Attempting to continue.\n");
5987
5988 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
5989
5990 #ifdef CONFIG_IWL4965_HT
5991 if (priv->current_ht_config.is_ht)
5992 iwl4965_set_rxon_ht(priv, &priv->current_ht_config);
5993 #endif /* CONFIG_IWL4965_HT*/
5994 iwl4965_set_rxon_chain(priv);
5995 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
5996
5997 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
5998 priv->assoc_id, priv->beacon_int);
5999
6000 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6001 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6002 else
6003 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6004
6005 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6006 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
6007 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
6008 else
6009 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6010
6011 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6012 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6013
6014 }
6015
6016 iwl4965_commit_rxon(priv);
6017
6018 switch (priv->iw_mode) {
6019 case IEEE80211_IF_TYPE_STA:
6020 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
6021 break;
6022
6023 case IEEE80211_IF_TYPE_IBSS:
6024
6025 /* clear out the station table */
6026 iwlcore_clear_stations_table(priv);
6027
6028 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
6029 iwl4965_rxon_add_station(priv, priv->bssid, 0);
6030 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
6031 iwl4965_send_beacon_cmd(priv);
6032
6033 break;
6034
6035 default:
6036 IWL_ERROR("%s Should not be called in %d mode\n",
6037 __FUNCTION__, priv->iw_mode);
6038 break;
6039 }
6040
6041 iwl4965_sequence_reset(priv);
6042
6043 #ifdef CONFIG_IWL4965_SENSITIVITY
6044 /* Enable Rx differential gain and sensitivity calibrations */
6045 iwl4965_chain_noise_reset(priv);
6046 priv->start_calib = 1;
6047 #endif /* CONFIG_IWL4965_SENSITIVITY */
6048
6049 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6050 priv->assoc_station_added = 1;
6051
6052 iwl4965_activate_qos(priv, 0);
6053
6054 /* we have just associated, don't start scan too early */
6055 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
6056 }
6057
6058
6059 static void iwl4965_bg_post_associate(struct work_struct *data)
6060 {
6061 struct iwl_priv *priv = container_of(data, struct iwl_priv,
6062 post_associate.work);
6063
6064 mutex_lock(&priv->mutex);
6065 iwl4965_post_associate(priv);
6066 mutex_unlock(&priv->mutex);
6067
6068 }
6069
6070 static void iwl4965_bg_abort_scan(struct work_struct *work)
6071 {
6072 struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
6073
6074 if (!iwl_is_ready(priv))
6075 return;
6076
6077 mutex_lock(&priv->mutex);
6078
6079 set_bit(STATUS_SCAN_ABORTING, &priv->status);
6080 iwl4965_send_scan_abort(priv);
6081
6082 mutex_unlock(&priv->mutex);
6083 }
6084
6085 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
6086
6087 static void iwl4965_bg_scan_completed(struct work_struct *work)
6088 {
6089 struct iwl_priv *priv =
6090 container_of(work, struct iwl_priv, scan_completed);
6091
6092 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
6093
6094 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6095 return;
6096
6097 if (test_bit(STATUS_CONF_PENDING, &priv->status))
6098 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
6099
6100 ieee80211_scan_completed(priv->hw);
6101
6102 /* Since setting the TXPOWER may have been deferred while
6103 * performing the scan, fire one off */
6104 mutex_lock(&priv->mutex);
6105 iwl4965_hw_reg_send_txpower(priv);
6106 mutex_unlock(&priv->mutex);
6107 }
6108
6109 /*****************************************************************************
6110 *
6111 * mac80211 entry point functions
6112 *
6113 *****************************************************************************/
6114
6115 #define UCODE_READY_TIMEOUT (2 * HZ)
6116
6117 static int iwl4965_mac_start(struct ieee80211_hw *hw)
6118 {
6119 struct iwl_priv *priv = hw->priv;
6120 int ret;
6121
6122 IWL_DEBUG_MAC80211("enter\n");
6123
6124 if (pci_enable_device(priv->pci_dev)) {
6125 IWL_ERROR("Fail to pci_enable_device\n");
6126 return -ENODEV;
6127 }
6128 pci_restore_state(priv->pci_dev);
6129 pci_enable_msi(priv->pci_dev);
6130
6131 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
6132 DRV_NAME, priv);
6133 if (ret) {
6134 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
6135 goto out_disable_msi;
6136 }
6137
6138 /* we should be verifying the device is ready to be opened */
6139 mutex_lock(&priv->mutex);
6140
6141 memset(&priv->staging_rxon, 0, sizeof(struct iwl4965_rxon_cmd));
6142 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
6143 * ucode filename and max sizes are card-specific. */
6144
6145 if (!priv->ucode_code.len) {
6146 ret = iwl4965_read_ucode(priv);
6147 if (ret) {
6148 IWL_ERROR("Could not read microcode: %d\n", ret);
6149 mutex_unlock(&priv->mutex);
6150 goto out_release_irq;
6151 }
6152 }
6153
6154 ret = __iwl4965_up(priv);
6155
6156 mutex_unlock(&priv->mutex);
6157
6158 if (ret)
6159 goto out_release_irq;
6160
6161 IWL_DEBUG_INFO("Start UP work done.\n");
6162
6163 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
6164 return 0;
6165
6166 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
6167 * mac80211 will not be run successfully. */
6168 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
6169 test_bit(STATUS_READY, &priv->status),
6170 UCODE_READY_TIMEOUT);
6171 if (!ret) {
6172 if (!test_bit(STATUS_READY, &priv->status)) {
6173 IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
6174 jiffies_to_msecs(UCODE_READY_TIMEOUT));
6175 ret = -ETIMEDOUT;
6176 goto out_release_irq;
6177 }
6178 }
6179
6180 priv->is_open = 1;
6181 IWL_DEBUG_MAC80211("leave\n");
6182 return 0;
6183
6184 out_release_irq:
6185 free_irq(priv->pci_dev->irq, priv);
6186 out_disable_msi:
6187 pci_disable_msi(priv->pci_dev);
6188 pci_disable_device(priv->pci_dev);
6189 priv->is_open = 0;
6190 IWL_DEBUG_MAC80211("leave - failed\n");
6191 return ret;
6192 }
6193
6194 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
6195 {
6196 struct iwl_priv *priv = hw->priv;
6197
6198 IWL_DEBUG_MAC80211("enter\n");
6199
6200 if (!priv->is_open) {
6201 IWL_DEBUG_MAC80211("leave - skip\n");
6202 return;
6203 }
6204
6205 priv->is_open = 0;
6206
6207 if (iwl_is_ready_rf(priv)) {
6208 /* stop mac, cancel any scan request and clear
6209 * RXON_FILTER_ASSOC_MSK BIT
6210 */
6211 mutex_lock(&priv->mutex);
6212 iwl4965_scan_cancel_timeout(priv, 100);
6213 cancel_delayed_work(&priv->post_associate);
6214 mutex_unlock(&priv->mutex);
6215 }
6216
6217 iwl4965_down(priv);
6218
6219 flush_workqueue(priv->workqueue);
6220 free_irq(priv->pci_dev->irq, priv);
6221 pci_disable_msi(priv->pci_dev);
6222 pci_save_state(priv->pci_dev);
6223 pci_disable_device(priv->pci_dev);
6224
6225 IWL_DEBUG_MAC80211("leave\n");
6226 }
6227
6228 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
6229 struct ieee80211_tx_control *ctl)
6230 {
6231 struct iwl_priv *priv = hw->priv;
6232
6233 IWL_DEBUG_MAC80211("enter\n");
6234
6235 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
6236 IWL_DEBUG_MAC80211("leave - monitor\n");
6237 return -1;
6238 }
6239
6240 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
6241 ctl->tx_rate->bitrate);
6242
6243 if (iwl4965_tx_skb(priv, skb, ctl))
6244 dev_kfree_skb_any(skb);
6245
6246 IWL_DEBUG_MAC80211("leave\n");
6247 return 0;
6248 }
6249
6250 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
6251 struct ieee80211_if_init_conf *conf)
6252 {
6253 struct iwl_priv *priv = hw->priv;
6254 unsigned long flags;
6255 DECLARE_MAC_BUF(mac);
6256
6257 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
6258
6259 if (priv->vif) {
6260 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
6261 return -EOPNOTSUPP;
6262 }
6263
6264 spin_lock_irqsave(&priv->lock, flags);
6265 priv->vif = conf->vif;
6266
6267 spin_unlock_irqrestore(&priv->lock, flags);
6268
6269 mutex_lock(&priv->mutex);
6270
6271 if (conf->mac_addr) {
6272 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
6273 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
6274 }
6275
6276 if (iwl_is_ready(priv))
6277 iwl4965_set_mode(priv, conf->type);
6278
6279 mutex_unlock(&priv->mutex);
6280
6281 IWL_DEBUG_MAC80211("leave\n");
6282 return 0;
6283 }
6284
6285 /**
6286 * iwl4965_mac_config - mac80211 config callback
6287 *
6288 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
6289 * be set inappropriately and the driver currently sets the hardware up to
6290 * use it whenever needed.
6291 */
6292 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
6293 {
6294 struct iwl_priv *priv = hw->priv;
6295 const struct iwl_channel_info *ch_info;
6296 unsigned long flags;
6297 int ret = 0;
6298
6299 mutex_lock(&priv->mutex);
6300 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
6301
6302 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
6303
6304 if (!iwl_is_ready(priv)) {
6305 IWL_DEBUG_MAC80211("leave - not ready\n");
6306 ret = -EIO;
6307 goto out;
6308 }
6309
6310 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
6311 test_bit(STATUS_SCANNING, &priv->status))) {
6312 IWL_DEBUG_MAC80211("leave - scanning\n");
6313 set_bit(STATUS_CONF_PENDING, &priv->status);
6314 mutex_unlock(&priv->mutex);
6315 return 0;
6316 }
6317
6318 spin_lock_irqsave(&priv->lock, flags);
6319
6320 ch_info = iwl_get_channel_info(priv, conf->channel->band,
6321 ieee80211_frequency_to_channel(conf->channel->center_freq));
6322 if (!is_channel_valid(ch_info)) {
6323 IWL_DEBUG_MAC80211("leave - invalid channel\n");
6324 spin_unlock_irqrestore(&priv->lock, flags);
6325 ret = -EINVAL;
6326 goto out;
6327 }
6328
6329 #ifdef CONFIG_IWL4965_HT
6330 /* if we are switching from ht to 2.4 clear flags
6331 * from any ht related info since 2.4 does not
6332 * support ht */
6333 if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
6334 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6335 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
6336 #endif
6337 )
6338 priv->staging_rxon.flags = 0;
6339 #endif /* CONFIG_IWL4965_HT */
6340
6341 iwlcore_set_rxon_channel(priv, conf->channel->band,
6342 ieee80211_frequency_to_channel(conf->channel->center_freq));
6343
6344 iwl4965_set_flags_for_phymode(priv, conf->channel->band);
6345
6346 /* The list of supported rates and rate mask can be different
6347 * for each band; since the band may have changed, reset
6348 * the rate mask to what mac80211 lists */
6349 iwl4965_set_rate(priv);
6350
6351 spin_unlock_irqrestore(&priv->lock, flags);
6352
6353 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6354 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
6355 iwl4965_hw_channel_switch(priv, conf->channel);
6356 goto out;
6357 }
6358 #endif
6359
6360 if (priv->cfg->ops->lib->radio_kill_sw)
6361 priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled);
6362
6363 if (!conf->radio_enabled) {
6364 IWL_DEBUG_MAC80211("leave - radio disabled\n");
6365 goto out;
6366 }
6367
6368 if (iwl_is_rfkill(priv)) {
6369 IWL_DEBUG_MAC80211("leave - RF kill\n");
6370 ret = -EIO;
6371 goto out;
6372 }
6373
6374 iwl4965_set_rate(priv);
6375
6376 if (memcmp(&priv->active_rxon,
6377 &priv->staging_rxon, sizeof(priv->staging_rxon)))
6378 iwl4965_commit_rxon(priv);
6379 else
6380 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
6381
6382 IWL_DEBUG_MAC80211("leave\n");
6383
6384 out:
6385 clear_bit(STATUS_CONF_PENDING, &priv->status);
6386 mutex_unlock(&priv->mutex);
6387 return ret;
6388 }
6389
6390 static void iwl4965_config_ap(struct iwl_priv *priv)
6391 {
6392 int ret = 0;
6393
6394 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6395 return;
6396
6397 /* The following should be done only at AP bring up */
6398 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
6399
6400 /* RXON - unassoc (to set timing command) */
6401 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6402 iwl4965_commit_rxon(priv);
6403
6404 /* RXON Timing */
6405 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
6406 iwl4965_setup_rxon_timing(priv);
6407 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6408 sizeof(priv->rxon_timing), &priv->rxon_timing);
6409 if (ret)
6410 IWL_WARNING("REPLY_RXON_TIMING failed - "
6411 "Attempting to continue.\n");
6412
6413 iwl4965_set_rxon_chain(priv);
6414
6415 /* FIXME: what should be the assoc_id for AP? */
6416 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6417 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6418 priv->staging_rxon.flags |=
6419 RXON_FLG_SHORT_PREAMBLE_MSK;
6420 else
6421 priv->staging_rxon.flags &=
6422 ~RXON_FLG_SHORT_PREAMBLE_MSK;
6423
6424 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6425 if (priv->assoc_capability &
6426 WLAN_CAPABILITY_SHORT_SLOT_TIME)
6427 priv->staging_rxon.flags |=
6428 RXON_FLG_SHORT_SLOT_MSK;
6429 else
6430 priv->staging_rxon.flags &=
6431 ~RXON_FLG_SHORT_SLOT_MSK;
6432
6433 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6434 priv->staging_rxon.flags &=
6435 ~RXON_FLG_SHORT_SLOT_MSK;
6436 }
6437 /* restore RXON assoc */
6438 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6439 iwl4965_commit_rxon(priv);
6440 iwl4965_activate_qos(priv, 1);
6441 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
6442 }
6443 iwl4965_send_beacon_cmd(priv);
6444
6445 /* FIXME - we need to add code here to detect a totally new
6446 * configuration, reset the AP, unassoc, rxon timing, assoc,
6447 * clear sta table, add BCAST sta... */
6448 }
6449
6450 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
6451 struct ieee80211_vif *vif,
6452 struct ieee80211_if_conf *conf)
6453 {
6454 struct iwl_priv *priv = hw->priv;
6455 DECLARE_MAC_BUF(mac);
6456 unsigned long flags;
6457 int rc;
6458
6459 if (conf == NULL)
6460 return -EIO;
6461
6462 if (priv->vif != vif) {
6463 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
6464 return 0;
6465 }
6466
6467 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
6468 (!conf->beacon || !conf->ssid_len)) {
6469 IWL_DEBUG_MAC80211
6470 ("Leaving in AP mode because HostAPD is not ready.\n");
6471 return 0;
6472 }
6473
6474 if (!iwl_is_alive(priv))
6475 return -EAGAIN;
6476
6477 mutex_lock(&priv->mutex);
6478
6479 if (conf->bssid)
6480 IWL_DEBUG_MAC80211("bssid: %s\n",
6481 print_mac(mac, conf->bssid));
6482
6483 /*
6484 * very dubious code was here; the probe filtering flag is never set:
6485 *
6486 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
6487 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
6488 */
6489
6490 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6491 if (!conf->bssid) {
6492 conf->bssid = priv->mac_addr;
6493 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
6494 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
6495 print_mac(mac, conf->bssid));
6496 }
6497 if (priv->ibss_beacon)
6498 dev_kfree_skb(priv->ibss_beacon);
6499
6500 priv->ibss_beacon = conf->beacon;
6501 }
6502
6503 if (iwl_is_rfkill(priv))
6504 goto done;
6505
6506 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
6507 !is_multicast_ether_addr(conf->bssid)) {
6508 /* If there is currently a HW scan going on in the background
6509 * then we need to cancel it else the RXON below will fail. */
6510 if (iwl4965_scan_cancel_timeout(priv, 100)) {
6511 IWL_WARNING("Aborted scan still in progress "
6512 "after 100ms\n");
6513 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
6514 mutex_unlock(&priv->mutex);
6515 return -EAGAIN;
6516 }
6517 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
6518
6519 /* TODO: Audit driver for usage of these members and see
6520 * if mac80211 deprecates them (priv->bssid looks like it
6521 * shouldn't be there, but I haven't scanned the IBSS code
6522 * to verify) - jpk */
6523 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
6524
6525 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
6526 iwl4965_config_ap(priv);
6527 else {
6528 rc = iwl4965_commit_rxon(priv);
6529 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
6530 iwl4965_rxon_add_station(
6531 priv, priv->active_rxon.bssid_addr, 1);
6532 }
6533
6534 } else {
6535 iwl4965_scan_cancel_timeout(priv, 100);
6536 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6537 iwl4965_commit_rxon(priv);
6538 }
6539
6540 done:
6541 spin_lock_irqsave(&priv->lock, flags);
6542 if (!conf->ssid_len)
6543 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
6544 else
6545 memcpy(priv->essid, conf->ssid, conf->ssid_len);
6546
6547 priv->essid_len = conf->ssid_len;
6548 spin_unlock_irqrestore(&priv->lock, flags);
6549
6550 IWL_DEBUG_MAC80211("leave\n");
6551 mutex_unlock(&priv->mutex);
6552
6553 return 0;
6554 }
6555
6556 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
6557 unsigned int changed_flags,
6558 unsigned int *total_flags,
6559 int mc_count, struct dev_addr_list *mc_list)
6560 {
6561 /*
6562 * XXX: dummy
6563 * see also iwl4965_connection_init_rx_config
6564 */
6565 *total_flags = 0;
6566 }
6567
6568 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
6569 struct ieee80211_if_init_conf *conf)
6570 {
6571 struct iwl_priv *priv = hw->priv;
6572
6573 IWL_DEBUG_MAC80211("enter\n");
6574
6575 mutex_lock(&priv->mutex);
6576
6577 if (iwl_is_ready_rf(priv)) {
6578 iwl4965_scan_cancel_timeout(priv, 100);
6579 cancel_delayed_work(&priv->post_associate);
6580 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6581 iwl4965_commit_rxon(priv);
6582 }
6583 if (priv->vif == conf->vif) {
6584 priv->vif = NULL;
6585 memset(priv->bssid, 0, ETH_ALEN);
6586 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
6587 priv->essid_len = 0;
6588 }
6589 mutex_unlock(&priv->mutex);
6590
6591 IWL_DEBUG_MAC80211("leave\n");
6592
6593 }
6594
6595
6596 #ifdef CONFIG_IWL4965_HT
6597 static void iwl4965_ht_conf(struct iwl_priv *priv,
6598 struct ieee80211_bss_conf *bss_conf)
6599 {
6600 struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
6601 struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
6602 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
6603
6604 IWL_DEBUG_MAC80211("enter: \n");
6605
6606 iwl_conf->is_ht = bss_conf->assoc_ht;
6607
6608 if (!iwl_conf->is_ht)
6609 return;
6610
6611 priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
6612
6613 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
6614 iwl_conf->sgf |= 0x1;
6615 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
6616 iwl_conf->sgf |= 0x2;
6617
6618 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
6619 iwl_conf->max_amsdu_size =
6620 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
6621
6622 iwl_conf->supported_chan_width =
6623 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
6624 iwl_conf->extension_chan_offset =
6625 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
6626 /* If no above or below channel supplied disable FAT channel */
6627 if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
6628 iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
6629 iwl_conf->supported_chan_width = 0;
6630
6631 iwl_conf->tx_mimo_ps_mode =
6632 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
6633 memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
6634
6635 iwl_conf->control_channel = ht_bss_conf->primary_channel;
6636 iwl_conf->tx_chan_width =
6637 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
6638 iwl_conf->ht_protection =
6639 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
6640 iwl_conf->non_GF_STA_present =
6641 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
6642
6643 IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
6644 IWL_DEBUG_MAC80211("leave\n");
6645 }
6646 #else
6647 static inline void iwl4965_ht_conf(struct iwl_priv *priv,
6648 struct ieee80211_bss_conf *bss_conf)
6649 {
6650 }
6651 #endif
6652
6653 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
6654 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
6655 struct ieee80211_vif *vif,
6656 struct ieee80211_bss_conf *bss_conf,
6657 u32 changes)
6658 {
6659 struct iwl_priv *priv = hw->priv;
6660
6661 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
6662
6663 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
6664 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
6665 bss_conf->use_short_preamble);
6666 if (bss_conf->use_short_preamble)
6667 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6668 else
6669 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6670 }
6671
6672 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
6673 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
6674 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
6675 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
6676 else
6677 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
6678 }
6679
6680 if (changes & BSS_CHANGED_HT) {
6681 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
6682 iwl4965_ht_conf(priv, bss_conf);
6683 iwl4965_set_rxon_chain(priv);
6684 }
6685
6686 if (changes & BSS_CHANGED_ASSOC) {
6687 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
6688 /* This should never happen as this function should
6689 * never be called from interrupt context. */
6690 if (WARN_ON_ONCE(in_interrupt()))
6691 return;
6692 if (bss_conf->assoc) {
6693 priv->assoc_id = bss_conf->aid;
6694 priv->beacon_int = bss_conf->beacon_int;
6695 priv->timestamp = bss_conf->timestamp;
6696 priv->assoc_capability = bss_conf->assoc_capability;
6697 priv->next_scan_jiffies = jiffies +
6698 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
6699 mutex_lock(&priv->mutex);
6700 iwl4965_post_associate(priv);
6701 mutex_unlock(&priv->mutex);
6702 } else {
6703 priv->assoc_id = 0;
6704 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
6705 }
6706 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
6707 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
6708 iwl_send_rxon_assoc(priv);
6709 }
6710
6711 }
6712
6713 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
6714 {
6715 int rc = 0;
6716 unsigned long flags;
6717 struct iwl_priv *priv = hw->priv;
6718
6719 IWL_DEBUG_MAC80211("enter\n");
6720
6721 mutex_lock(&priv->mutex);
6722 spin_lock_irqsave(&priv->lock, flags);
6723
6724 if (!iwl_is_ready_rf(priv)) {
6725 rc = -EIO;
6726 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
6727 goto out_unlock;
6728 }
6729
6730 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
6731 rc = -EIO;
6732 IWL_ERROR("ERROR: APs don't scan\n");
6733 goto out_unlock;
6734 }
6735
6736 /* we don't schedule scan within next_scan_jiffies period */
6737 if (priv->next_scan_jiffies &&
6738 time_after(priv->next_scan_jiffies, jiffies)) {
6739 rc = -EAGAIN;
6740 goto out_unlock;
6741 }
6742 /* if we just finished scan ask for delay */
6743 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
6744 IWL_DELAY_NEXT_SCAN, jiffies)) {
6745 rc = -EAGAIN;
6746 goto out_unlock;
6747 }
6748 if (len) {
6749 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
6750 iwl4965_escape_essid(ssid, len), (int)len);
6751
6752 priv->one_direct_scan = 1;
6753 priv->direct_ssid_len = (u8)
6754 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
6755 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
6756 } else
6757 priv->one_direct_scan = 0;
6758
6759 rc = iwl4965_scan_initiate(priv);
6760
6761 IWL_DEBUG_MAC80211("leave\n");
6762
6763 out_unlock:
6764 spin_unlock_irqrestore(&priv->lock, flags);
6765 mutex_unlock(&priv->mutex);
6766
6767 return rc;
6768 }
6769
6770 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
6771 struct ieee80211_key_conf *keyconf, const u8 *addr,
6772 u32 iv32, u16 *phase1key)
6773 {
6774 struct iwl_priv *priv = hw->priv;
6775 u8 sta_id = IWL_INVALID_STATION;
6776 unsigned long flags;
6777 __le16 key_flags = 0;
6778 int i;
6779 DECLARE_MAC_BUF(mac);
6780
6781 IWL_DEBUG_MAC80211("enter\n");
6782
6783 sta_id = iwl4965_hw_find_station(priv, addr);
6784 if (sta_id == IWL_INVALID_STATION) {
6785 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
6786 print_mac(mac, addr));
6787 return;
6788 }
6789
6790 iwl4965_scan_cancel_timeout(priv, 100);
6791
6792 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
6793 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
6794 key_flags &= ~STA_KEY_FLG_INVALID;
6795
6796 if (sta_id == priv->hw_params.bcast_sta_id)
6797 key_flags |= STA_KEY_MULTICAST_MSK;
6798
6799 spin_lock_irqsave(&priv->sta_lock, flags);
6800
6801 priv->stations[sta_id].sta.key.key_flags = key_flags;
6802 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
6803
6804 for (i = 0; i < 5; i++)
6805 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
6806 cpu_to_le16(phase1key[i]);
6807
6808 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
6809 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
6810
6811 iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
6812
6813 spin_unlock_irqrestore(&priv->sta_lock, flags);
6814
6815 IWL_DEBUG_MAC80211("leave\n");
6816 }
6817
6818 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
6819 const u8 *local_addr, const u8 *addr,
6820 struct ieee80211_key_conf *key)
6821 {
6822 struct iwl_priv *priv = hw->priv;
6823 DECLARE_MAC_BUF(mac);
6824 int ret = 0;
6825 u8 sta_id = IWL_INVALID_STATION;
6826 u8 is_default_wep_key = 0;
6827
6828 IWL_DEBUG_MAC80211("enter\n");
6829
6830 if (priv->cfg->mod_params->sw_crypto) {
6831 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
6832 return -EOPNOTSUPP;
6833 }
6834
6835 if (is_zero_ether_addr(addr))
6836 /* only support pairwise keys */
6837 return -EOPNOTSUPP;
6838
6839 sta_id = iwl4965_hw_find_station(priv, addr);
6840 if (sta_id == IWL_INVALID_STATION) {
6841 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
6842 print_mac(mac, addr));
6843 return -EINVAL;
6844
6845 }
6846
6847 mutex_lock(&priv->mutex);
6848 iwl4965_scan_cancel_timeout(priv, 100);
6849 mutex_unlock(&priv->mutex);
6850
6851 /* If we are getting WEP group key and we didn't receive any key mapping
6852 * so far, we are in legacy wep mode (group key only), otherwise we are
6853 * in 1X mode.
6854 * In legacy wep mode, we use another host command to the uCode */
6855 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
6856 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
6857 if (cmd == SET_KEY)
6858 is_default_wep_key = !priv->key_mapping_key;
6859 else
6860 is_default_wep_key = priv->default_wep_key;
6861 }
6862
6863 switch (cmd) {
6864 case SET_KEY:
6865 if (is_default_wep_key)
6866 ret = iwl_set_default_wep_key(priv, key);
6867 else
6868 ret = iwl_set_dynamic_key(priv, key, sta_id);
6869
6870 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
6871 break;
6872 case DISABLE_KEY:
6873 if (is_default_wep_key)
6874 ret = iwl_remove_default_wep_key(priv, key);
6875 else
6876 ret = iwl_remove_dynamic_key(priv, sta_id);
6877
6878 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
6879 break;
6880 default:
6881 ret = -EINVAL;
6882 }
6883
6884 IWL_DEBUG_MAC80211("leave\n");
6885
6886 return ret;
6887 }
6888
6889 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, int queue,
6890 const struct ieee80211_tx_queue_params *params)
6891 {
6892 struct iwl_priv *priv = hw->priv;
6893 unsigned long flags;
6894 int q;
6895
6896 IWL_DEBUG_MAC80211("enter\n");
6897
6898 if (!iwl_is_ready_rf(priv)) {
6899 IWL_DEBUG_MAC80211("leave - RF not ready\n");
6900 return -EIO;
6901 }
6902
6903 if (queue >= AC_NUM) {
6904 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
6905 return 0;
6906 }
6907
6908 if (!priv->qos_data.qos_enable) {
6909 priv->qos_data.qos_active = 0;
6910 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
6911 return 0;
6912 }
6913 q = AC_NUM - 1 - queue;
6914
6915 spin_lock_irqsave(&priv->lock, flags);
6916
6917 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
6918 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
6919 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
6920 priv->qos_data.def_qos_parm.ac[q].edca_txop =
6921 cpu_to_le16((params->txop * 32));
6922
6923 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
6924 priv->qos_data.qos_active = 1;
6925
6926 spin_unlock_irqrestore(&priv->lock, flags);
6927
6928 mutex_lock(&priv->mutex);
6929 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
6930 iwl4965_activate_qos(priv, 1);
6931 else if (priv->assoc_id && iwl_is_associated(priv))
6932 iwl4965_activate_qos(priv, 0);
6933
6934 mutex_unlock(&priv->mutex);
6935
6936 IWL_DEBUG_MAC80211("leave\n");
6937 return 0;
6938 }
6939
6940 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
6941 struct ieee80211_tx_queue_stats *stats)
6942 {
6943 struct iwl_priv *priv = hw->priv;
6944 int i, avail;
6945 struct iwl4965_tx_queue *txq;
6946 struct iwl4965_queue *q;
6947 unsigned long flags;
6948
6949 IWL_DEBUG_MAC80211("enter\n");
6950
6951 if (!iwl_is_ready_rf(priv)) {
6952 IWL_DEBUG_MAC80211("leave - RF not ready\n");
6953 return -EIO;
6954 }
6955
6956 spin_lock_irqsave(&priv->lock, flags);
6957
6958 for (i = 0; i < AC_NUM; i++) {
6959 txq = &priv->txq[i];
6960 q = &txq->q;
6961 avail = iwl4965_queue_space(q);
6962
6963 stats->data[i].len = q->n_window - avail;
6964 stats->data[i].limit = q->n_window - q->high_mark;
6965 stats->data[i].count = q->n_window;
6966
6967 }
6968 spin_unlock_irqrestore(&priv->lock, flags);
6969
6970 IWL_DEBUG_MAC80211("leave\n");
6971
6972 return 0;
6973 }
6974
6975 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
6976 struct ieee80211_low_level_stats *stats)
6977 {
6978 IWL_DEBUG_MAC80211("enter\n");
6979 IWL_DEBUG_MAC80211("leave\n");
6980
6981 return 0;
6982 }
6983
6984 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
6985 {
6986 IWL_DEBUG_MAC80211("enter\n");
6987 IWL_DEBUG_MAC80211("leave\n");
6988
6989 return 0;
6990 }
6991
6992 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
6993 {
6994 struct iwl_priv *priv = hw->priv;
6995 unsigned long flags;
6996
6997 mutex_lock(&priv->mutex);
6998 IWL_DEBUG_MAC80211("enter\n");
6999
7000 priv->lq_mngr.lq_ready = 0;
7001 #ifdef CONFIG_IWL4965_HT
7002 spin_lock_irqsave(&priv->lock, flags);
7003 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
7004 spin_unlock_irqrestore(&priv->lock, flags);
7005 #endif /* CONFIG_IWL4965_HT */
7006
7007 iwlcore_reset_qos(priv);
7008
7009 cancel_delayed_work(&priv->post_associate);
7010
7011 spin_lock_irqsave(&priv->lock, flags);
7012 priv->assoc_id = 0;
7013 priv->assoc_capability = 0;
7014 priv->assoc_station_added = 0;
7015
7016 /* new association get rid of ibss beacon skb */
7017 if (priv->ibss_beacon)
7018 dev_kfree_skb(priv->ibss_beacon);
7019
7020 priv->ibss_beacon = NULL;
7021
7022 priv->beacon_int = priv->hw->conf.beacon_int;
7023 priv->timestamp = 0;
7024 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
7025 priv->beacon_int = 0;
7026
7027 spin_unlock_irqrestore(&priv->lock, flags);
7028
7029 if (!iwl_is_ready_rf(priv)) {
7030 IWL_DEBUG_MAC80211("leave - not ready\n");
7031 mutex_unlock(&priv->mutex);
7032 return;
7033 }
7034
7035 /* we are restarting association process
7036 * clear RXON_FILTER_ASSOC_MSK bit
7037 */
7038 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
7039 iwl4965_scan_cancel_timeout(priv, 100);
7040 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7041 iwl4965_commit_rxon(priv);
7042 }
7043
7044 /* Per mac80211.h: This is only used in IBSS mode... */
7045 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7046
7047 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7048 mutex_unlock(&priv->mutex);
7049 return;
7050 }
7051
7052 iwl4965_set_rate(priv);
7053
7054 mutex_unlock(&priv->mutex);
7055
7056 IWL_DEBUG_MAC80211("leave\n");
7057 }
7058
7059 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
7060 struct ieee80211_tx_control *control)
7061 {
7062 struct iwl_priv *priv = hw->priv;
7063 unsigned long flags;
7064
7065 mutex_lock(&priv->mutex);
7066 IWL_DEBUG_MAC80211("enter\n");
7067
7068 if (!iwl_is_ready_rf(priv)) {
7069 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7070 mutex_unlock(&priv->mutex);
7071 return -EIO;
7072 }
7073
7074 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7075 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7076 mutex_unlock(&priv->mutex);
7077 return -EIO;
7078 }
7079
7080 spin_lock_irqsave(&priv->lock, flags);
7081
7082 if (priv->ibss_beacon)
7083 dev_kfree_skb(priv->ibss_beacon);
7084
7085 priv->ibss_beacon = skb;
7086
7087 priv->assoc_id = 0;
7088
7089 IWL_DEBUG_MAC80211("leave\n");
7090 spin_unlock_irqrestore(&priv->lock, flags);
7091
7092 iwlcore_reset_qos(priv);
7093
7094 queue_work(priv->workqueue, &priv->post_associate.work);
7095
7096 mutex_unlock(&priv->mutex);
7097
7098 return 0;
7099 }
7100
7101 /*****************************************************************************
7102 *
7103 * sysfs attributes
7104 *
7105 *****************************************************************************/
7106
7107 #ifdef CONFIG_IWLWIFI_DEBUG
7108
7109 /*
7110 * The following adds a new attribute to the sysfs representation
7111 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
7112 * used for controlling the debug level.
7113 *
7114 * See the level definitions in iwl for details.
7115 */
7116
7117 static ssize_t show_debug_level(struct device_driver *d, char *buf)
7118 {
7119 return sprintf(buf, "0x%08X\n", iwl_debug_level);
7120 }
7121 static ssize_t store_debug_level(struct device_driver *d,
7122 const char *buf, size_t count)
7123 {
7124 char *p = (char *)buf;
7125 u32 val;
7126
7127 val = simple_strtoul(p, &p, 0);
7128 if (p == buf)
7129 printk(KERN_INFO DRV_NAME
7130 ": %s is not in hex or decimal form.\n", buf);
7131 else
7132 iwl_debug_level = val;
7133
7134 return strnlen(buf, count);
7135 }
7136
7137 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
7138 show_debug_level, store_debug_level);
7139
7140 #endif /* CONFIG_IWLWIFI_DEBUG */
7141
7142
7143 static ssize_t show_temperature(struct device *d,
7144 struct device_attribute *attr, char *buf)
7145 {
7146 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7147
7148 if (!iwl_is_alive(priv))
7149 return -EAGAIN;
7150
7151 return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
7152 }
7153
7154 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
7155
7156 static ssize_t show_rs_window(struct device *d,
7157 struct device_attribute *attr,
7158 char *buf)
7159 {
7160 struct iwl_priv *priv = d->driver_data;
7161 return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
7162 }
7163 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
7164
7165 static ssize_t show_tx_power(struct device *d,
7166 struct device_attribute *attr, char *buf)
7167 {
7168 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7169 return sprintf(buf, "%d\n", priv->user_txpower_limit);
7170 }
7171
7172 static ssize_t store_tx_power(struct device *d,
7173 struct device_attribute *attr,
7174 const char *buf, size_t count)
7175 {
7176 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7177 char *p = (char *)buf;
7178 u32 val;
7179
7180 val = simple_strtoul(p, &p, 10);
7181 if (p == buf)
7182 printk(KERN_INFO DRV_NAME
7183 ": %s is not in decimal form.\n", buf);
7184 else
7185 iwl4965_hw_reg_set_txpower(priv, val);
7186
7187 return count;
7188 }
7189
7190 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
7191
7192 static ssize_t show_flags(struct device *d,
7193 struct device_attribute *attr, char *buf)
7194 {
7195 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7196
7197 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
7198 }
7199
7200 static ssize_t store_flags(struct device *d,
7201 struct device_attribute *attr,
7202 const char *buf, size_t count)
7203 {
7204 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7205 u32 flags = simple_strtoul(buf, NULL, 0);
7206
7207 mutex_lock(&priv->mutex);
7208 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
7209 /* Cancel any currently running scans... */
7210 if (iwl4965_scan_cancel_timeout(priv, 100))
7211 IWL_WARNING("Could not cancel scan.\n");
7212 else {
7213 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
7214 flags);
7215 priv->staging_rxon.flags = cpu_to_le32(flags);
7216 iwl4965_commit_rxon(priv);
7217 }
7218 }
7219 mutex_unlock(&priv->mutex);
7220
7221 return count;
7222 }
7223
7224 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
7225
7226 static ssize_t show_filter_flags(struct device *d,
7227 struct device_attribute *attr, char *buf)
7228 {
7229 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7230
7231 return sprintf(buf, "0x%04X\n",
7232 le32_to_cpu(priv->active_rxon.filter_flags));
7233 }
7234
7235 static ssize_t store_filter_flags(struct device *d,
7236 struct device_attribute *attr,
7237 const char *buf, size_t count)
7238 {
7239 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7240 u32 filter_flags = simple_strtoul(buf, NULL, 0);
7241
7242 mutex_lock(&priv->mutex);
7243 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
7244 /* Cancel any currently running scans... */
7245 if (iwl4965_scan_cancel_timeout(priv, 100))
7246 IWL_WARNING("Could not cancel scan.\n");
7247 else {
7248 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7249 "0x%04X\n", filter_flags);
7250 priv->staging_rxon.filter_flags =
7251 cpu_to_le32(filter_flags);
7252 iwl4965_commit_rxon(priv);
7253 }
7254 }
7255 mutex_unlock(&priv->mutex);
7256
7257 return count;
7258 }
7259
7260 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
7261 store_filter_flags);
7262
7263 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
7264
7265 static ssize_t show_measurement(struct device *d,
7266 struct device_attribute *attr, char *buf)
7267 {
7268 struct iwl_priv *priv = dev_get_drvdata(d);
7269 struct iwl4965_spectrum_notification measure_report;
7270 u32 size = sizeof(measure_report), len = 0, ofs = 0;
7271 u8 *data = (u8 *) & measure_report;
7272 unsigned long flags;
7273
7274 spin_lock_irqsave(&priv->lock, flags);
7275 if (!(priv->measurement_status & MEASUREMENT_READY)) {
7276 spin_unlock_irqrestore(&priv->lock, flags);
7277 return 0;
7278 }
7279 memcpy(&measure_report, &priv->measure_report, size);
7280 priv->measurement_status = 0;
7281 spin_unlock_irqrestore(&priv->lock, flags);
7282
7283 while (size && (PAGE_SIZE - len)) {
7284 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7285 PAGE_SIZE - len, 1);
7286 len = strlen(buf);
7287 if (PAGE_SIZE - len)
7288 buf[len++] = '\n';
7289
7290 ofs += 16;
7291 size -= min(size, 16U);
7292 }
7293
7294 return len;
7295 }
7296
7297 static ssize_t store_measurement(struct device *d,
7298 struct device_attribute *attr,
7299 const char *buf, size_t count)
7300 {
7301 struct iwl_priv *priv = dev_get_drvdata(d);
7302 struct ieee80211_measurement_params params = {
7303 .channel = le16_to_cpu(priv->active_rxon.channel),
7304 .start_time = cpu_to_le64(priv->last_tsf),
7305 .duration = cpu_to_le16(1),
7306 };
7307 u8 type = IWL_MEASURE_BASIC;
7308 u8 buffer[32];
7309 u8 channel;
7310
7311 if (count) {
7312 char *p = buffer;
7313 strncpy(buffer, buf, min(sizeof(buffer), count));
7314 channel = simple_strtoul(p, NULL, 0);
7315 if (channel)
7316 params.channel = channel;
7317
7318 p = buffer;
7319 while (*p && *p != ' ')
7320 p++;
7321 if (*p)
7322 type = simple_strtoul(p + 1, NULL, 0);
7323 }
7324
7325 IWL_DEBUG_INFO("Invoking measurement of type %d on "
7326 "channel %d (for '%s')\n", type, params.channel, buf);
7327 iwl4965_get_measurement(priv, &params, type);
7328
7329 return count;
7330 }
7331
7332 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
7333 show_measurement, store_measurement);
7334 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
7335
7336 static ssize_t store_retry_rate(struct device *d,
7337 struct device_attribute *attr,
7338 const char *buf, size_t count)
7339 {
7340 struct iwl_priv *priv = dev_get_drvdata(d);
7341
7342 priv->retry_rate = simple_strtoul(buf, NULL, 0);
7343 if (priv->retry_rate <= 0)
7344 priv->retry_rate = 1;
7345
7346 return count;
7347 }
7348
7349 static ssize_t show_retry_rate(struct device *d,
7350 struct device_attribute *attr, char *buf)
7351 {
7352 struct iwl_priv *priv = dev_get_drvdata(d);
7353 return sprintf(buf, "%d", priv->retry_rate);
7354 }
7355
7356 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
7357 store_retry_rate);
7358
7359 static ssize_t store_power_level(struct device *d,
7360 struct device_attribute *attr,
7361 const char *buf, size_t count)
7362 {
7363 struct iwl_priv *priv = dev_get_drvdata(d);
7364 int rc;
7365 int mode;
7366
7367 mode = simple_strtoul(buf, NULL, 0);
7368 mutex_lock(&priv->mutex);
7369
7370 if (!iwl_is_ready(priv)) {
7371 rc = -EAGAIN;
7372 goto out;
7373 }
7374
7375 if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
7376 mode = IWL_POWER_AC;
7377 else
7378 mode |= IWL_POWER_ENABLED;
7379
7380 if (mode != priv->power_mode) {
7381 rc = iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(mode));
7382 if (rc) {
7383 IWL_DEBUG_MAC80211("failed setting power mode.\n");
7384 goto out;
7385 }
7386 priv->power_mode = mode;
7387 }
7388
7389 rc = count;
7390
7391 out:
7392 mutex_unlock(&priv->mutex);
7393 return rc;
7394 }
7395
7396 #define MAX_WX_STRING 80
7397
7398 /* Values are in microsecond */
7399 static const s32 timeout_duration[] = {
7400 350000,
7401 250000,
7402 75000,
7403 37000,
7404 25000,
7405 };
7406 static const s32 period_duration[] = {
7407 400000,
7408 700000,
7409 1000000,
7410 1000000,
7411 1000000
7412 };
7413
7414 static ssize_t show_power_level(struct device *d,
7415 struct device_attribute *attr, char *buf)
7416 {
7417 struct iwl_priv *priv = dev_get_drvdata(d);
7418 int level = IWL_POWER_LEVEL(priv->power_mode);
7419 char *p = buf;
7420
7421 p += sprintf(p, "%d ", level);
7422 switch (level) {
7423 case IWL_POWER_MODE_CAM:
7424 case IWL_POWER_AC:
7425 p += sprintf(p, "(AC)");
7426 break;
7427 case IWL_POWER_BATTERY:
7428 p += sprintf(p, "(BATTERY)");
7429 break;
7430 default:
7431 p += sprintf(p,
7432 "(Timeout %dms, Period %dms)",
7433 timeout_duration[level - 1] / 1000,
7434 period_duration[level - 1] / 1000);
7435 }
7436
7437 if (!(priv->power_mode & IWL_POWER_ENABLED))
7438 p += sprintf(p, " OFF\n");
7439 else
7440 p += sprintf(p, " \n");
7441
7442 return (p - buf + 1);
7443
7444 }
7445
7446 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
7447 store_power_level);
7448
7449 static ssize_t show_channels(struct device *d,
7450 struct device_attribute *attr, char *buf)
7451 {
7452 /* all this shit doesn't belong into sysfs anyway */
7453 return 0;
7454 }
7455
7456 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
7457
7458 static ssize_t show_statistics(struct device *d,
7459 struct device_attribute *attr, char *buf)
7460 {
7461 struct iwl_priv *priv = dev_get_drvdata(d);
7462 u32 size = sizeof(struct iwl4965_notif_statistics);
7463 u32 len = 0, ofs = 0;
7464 u8 *data = (u8 *) & priv->statistics;
7465 int rc = 0;
7466
7467 if (!iwl_is_alive(priv))
7468 return -EAGAIN;
7469
7470 mutex_lock(&priv->mutex);
7471 rc = iwl_send_statistics_request(priv, 0);
7472 mutex_unlock(&priv->mutex);
7473
7474 if (rc) {
7475 len = sprintf(buf,
7476 "Error sending statistics request: 0x%08X\n", rc);
7477 return len;
7478 }
7479
7480 while (size && (PAGE_SIZE - len)) {
7481 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7482 PAGE_SIZE - len, 1);
7483 len = strlen(buf);
7484 if (PAGE_SIZE - len)
7485 buf[len++] = '\n';
7486
7487 ofs += 16;
7488 size -= min(size, 16U);
7489 }
7490
7491 return len;
7492 }
7493
7494 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
7495
7496 static ssize_t show_antenna(struct device *d,
7497 struct device_attribute *attr, char *buf)
7498 {
7499 struct iwl_priv *priv = dev_get_drvdata(d);
7500
7501 if (!iwl_is_alive(priv))
7502 return -EAGAIN;
7503
7504 return sprintf(buf, "%d\n", priv->antenna);
7505 }
7506
7507 static ssize_t store_antenna(struct device *d,
7508 struct device_attribute *attr,
7509 const char *buf, size_t count)
7510 {
7511 int ant;
7512 struct iwl_priv *priv = dev_get_drvdata(d);
7513
7514 if (count == 0)
7515 return 0;
7516
7517 if (sscanf(buf, "%1i", &ant) != 1) {
7518 IWL_DEBUG_INFO("not in hex or decimal form.\n");
7519 return count;
7520 }
7521
7522 if ((ant >= 0) && (ant <= 2)) {
7523 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
7524 priv->antenna = (enum iwl4965_antenna)ant;
7525 } else
7526 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
7527
7528
7529 return count;
7530 }
7531
7532 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
7533
7534 static ssize_t show_status(struct device *d,
7535 struct device_attribute *attr, char *buf)
7536 {
7537 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7538 if (!iwl_is_alive(priv))
7539 return -EAGAIN;
7540 return sprintf(buf, "0x%08x\n", (int)priv->status);
7541 }
7542
7543 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
7544
7545 static ssize_t dump_error_log(struct device *d,
7546 struct device_attribute *attr,
7547 const char *buf, size_t count)
7548 {
7549 char *p = (char *)buf;
7550
7551 if (p[0] == '1')
7552 iwl4965_dump_nic_error_log((struct iwl_priv *)d->driver_data);
7553
7554 return strnlen(buf, count);
7555 }
7556
7557 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
7558
7559 static ssize_t dump_event_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_event_log((struct iwl_priv *)d->driver_data);
7567
7568 return strnlen(buf, count);
7569 }
7570
7571 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
7572
7573 /*****************************************************************************
7574 *
7575 * driver setup and teardown
7576 *
7577 *****************************************************************************/
7578
7579 static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
7580 {
7581 priv->workqueue = create_workqueue(DRV_NAME);
7582
7583 init_waitqueue_head(&priv->wait_command_queue);
7584
7585 INIT_WORK(&priv->up, iwl4965_bg_up);
7586 INIT_WORK(&priv->restart, iwl4965_bg_restart);
7587 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
7588 INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
7589 INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
7590 INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
7591 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
7592 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
7593 INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
7594 INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
7595 INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
7596 INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
7597
7598 iwl4965_hw_setup_deferred_work(priv);
7599
7600 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
7601 iwl4965_irq_tasklet, (unsigned long)priv);
7602 }
7603
7604 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
7605 {
7606 iwl4965_hw_cancel_deferred_work(priv);
7607
7608 cancel_delayed_work_sync(&priv->init_alive_start);
7609 cancel_delayed_work(&priv->scan_check);
7610 cancel_delayed_work(&priv->alive_start);
7611 cancel_delayed_work(&priv->post_associate);
7612 cancel_work_sync(&priv->beacon_update);
7613 }
7614
7615 static struct attribute *iwl4965_sysfs_entries[] = {
7616 &dev_attr_antenna.attr,
7617 &dev_attr_channels.attr,
7618 &dev_attr_dump_errors.attr,
7619 &dev_attr_dump_events.attr,
7620 &dev_attr_flags.attr,
7621 &dev_attr_filter_flags.attr,
7622 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
7623 &dev_attr_measurement.attr,
7624 #endif
7625 &dev_attr_power_level.attr,
7626 &dev_attr_retry_rate.attr,
7627 &dev_attr_rs_window.attr,
7628 &dev_attr_statistics.attr,
7629 &dev_attr_status.attr,
7630 &dev_attr_temperature.attr,
7631 &dev_attr_tx_power.attr,
7632
7633 NULL
7634 };
7635
7636 static struct attribute_group iwl4965_attribute_group = {
7637 .name = NULL, /* put in device directory */
7638 .attrs = iwl4965_sysfs_entries,
7639 };
7640
7641 static struct ieee80211_ops iwl4965_hw_ops = {
7642 .tx = iwl4965_mac_tx,
7643 .start = iwl4965_mac_start,
7644 .stop = iwl4965_mac_stop,
7645 .add_interface = iwl4965_mac_add_interface,
7646 .remove_interface = iwl4965_mac_remove_interface,
7647 .config = iwl4965_mac_config,
7648 .config_interface = iwl4965_mac_config_interface,
7649 .configure_filter = iwl4965_configure_filter,
7650 .set_key = iwl4965_mac_set_key,
7651 .update_tkip_key = iwl4965_mac_update_tkip_key,
7652 .get_stats = iwl4965_mac_get_stats,
7653 .get_tx_stats = iwl4965_mac_get_tx_stats,
7654 .conf_tx = iwl4965_mac_conf_tx,
7655 .get_tsf = iwl4965_mac_get_tsf,
7656 .reset_tsf = iwl4965_mac_reset_tsf,
7657 .beacon_update = iwl4965_mac_beacon_update,
7658 .bss_info_changed = iwl4965_bss_info_changed,
7659 #ifdef CONFIG_IWL4965_HT
7660 .ampdu_action = iwl4965_mac_ampdu_action,
7661 #endif /* CONFIG_IWL4965_HT */
7662 .hw_scan = iwl4965_mac_hw_scan
7663 };
7664
7665 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
7666 {
7667 int err = 0;
7668 struct iwl_priv *priv;
7669 struct ieee80211_hw *hw;
7670 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
7671 unsigned long flags;
7672 DECLARE_MAC_BUF(mac);
7673
7674 /************************
7675 * 1. Allocating HW data
7676 ************************/
7677
7678 /* Disabling hardware scan means that mac80211 will perform scans
7679 * "the hard way", rather than using device's scan. */
7680 if (cfg->mod_params->disable_hw_scan) {
7681 IWL_DEBUG_INFO("Disabling hw_scan\n");
7682 iwl4965_hw_ops.hw_scan = NULL;
7683 }
7684
7685 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
7686 if (!hw) {
7687 err = -ENOMEM;
7688 goto out;
7689 }
7690 priv = hw->priv;
7691 /* At this point both hw and priv are allocated. */
7692
7693 SET_IEEE80211_DEV(hw, &pdev->dev);
7694
7695 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
7696 priv->cfg = cfg;
7697 priv->pci_dev = pdev;
7698
7699 #ifdef CONFIG_IWLWIFI_DEBUG
7700 iwl_debug_level = priv->cfg->mod_params->debug;
7701 atomic_set(&priv->restrict_refcnt, 0);
7702 #endif
7703
7704 /**************************
7705 * 2. Initializing PCI bus
7706 **************************/
7707 if (pci_enable_device(pdev)) {
7708 err = -ENODEV;
7709 goto out_ieee80211_free_hw;
7710 }
7711
7712 pci_set_master(pdev);
7713
7714 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7715 if (!err)
7716 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
7717 if (err) {
7718 printk(KERN_WARNING DRV_NAME
7719 ": No suitable DMA available.\n");
7720 goto out_pci_disable_device;
7721 }
7722
7723 err = pci_request_regions(pdev, DRV_NAME);
7724 if (err)
7725 goto out_pci_disable_device;
7726
7727 pci_set_drvdata(pdev, priv);
7728
7729 /* We disable the RETRY_TIMEOUT register (0x41) to keep
7730 * PCI Tx retries from interfering with C3 CPU state */
7731 pci_write_config_byte(pdev, 0x41, 0x00);
7732
7733 /***********************
7734 * 3. Read REV register
7735 ***********************/
7736 priv->hw_base = pci_iomap(pdev, 0, 0);
7737 if (!priv->hw_base) {
7738 err = -ENODEV;
7739 goto out_pci_release_regions;
7740 }
7741
7742 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
7743 (unsigned long long) pci_resource_len(pdev, 0));
7744 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
7745
7746 printk(KERN_INFO DRV_NAME
7747 ": Detected Intel Wireless WiFi Link %s\n", priv->cfg->name);
7748
7749 /*****************
7750 * 4. Read EEPROM
7751 *****************/
7752 /* nic init */
7753 iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
7754 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
7755
7756 iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
7757 err = iwl_poll_bit(priv, CSR_GP_CNTRL,
7758 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
7759 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
7760 if (err < 0) {
7761 IWL_DEBUG_INFO("Failed to init the card\n");
7762 goto out_iounmap;
7763 }
7764 /* Read the EEPROM */
7765 err = iwl_eeprom_init(priv);
7766 if (err) {
7767 IWL_ERROR("Unable to init EEPROM\n");
7768 goto out_iounmap;
7769 }
7770 /* MAC Address location in EEPROM same for 3945/4965 */
7771 iwl_eeprom_get_mac(priv, priv->mac_addr);
7772 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
7773 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
7774
7775 /************************
7776 * 5. Setup HW constants
7777 ************************/
7778 /* Device-specific setup */
7779 if (priv->cfg->ops->lib->set_hw_params(priv)) {
7780 IWL_ERROR("failed to set hw parameters\n");
7781 goto out_iounmap;
7782 }
7783
7784 /*******************
7785 * 6. Setup hw/priv
7786 *******************/
7787
7788 err = iwl_setup(priv);
7789 if (err)
7790 goto out_unset_hw_params;
7791 /* At this point both hw and priv are initialized. */
7792
7793 /**********************************
7794 * 7. Initialize module parameters
7795 **********************************/
7796
7797 /* Disable radio (SW RF KILL) via parameter when loading driver */
7798 if (priv->cfg->mod_params->disable) {
7799 set_bit(STATUS_RF_KILL_SW, &priv->status);
7800 IWL_DEBUG_INFO("Radio disabled.\n");
7801 }
7802
7803 if (priv->cfg->mod_params->enable_qos)
7804 priv->qos_data.qos_enable = 1;
7805
7806 /********************
7807 * 8. Setup services
7808 ********************/
7809 spin_lock_irqsave(&priv->lock, flags);
7810 iwl4965_disable_interrupts(priv);
7811 spin_unlock_irqrestore(&priv->lock, flags);
7812
7813 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
7814 if (err) {
7815 IWL_ERROR("failed to create sysfs device attributes\n");
7816 goto out_unset_hw_params;
7817 }
7818
7819 err = iwl_dbgfs_register(priv, DRV_NAME);
7820 if (err) {
7821 IWL_ERROR("failed to create debugfs files\n");
7822 goto out_remove_sysfs;
7823 }
7824
7825 iwl4965_setup_deferred_work(priv);
7826 iwl4965_setup_rx_handlers(priv);
7827
7828 /********************
7829 * 9. Conclude
7830 ********************/
7831 pci_save_state(pdev);
7832 pci_disable_device(pdev);
7833
7834 /* notify iwlcore to init */
7835 iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
7836 return 0;
7837
7838 out_remove_sysfs:
7839 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
7840 out_unset_hw_params:
7841 iwl4965_unset_hw_params(priv);
7842 out_iounmap:
7843 pci_iounmap(pdev, priv->hw_base);
7844 out_pci_release_regions:
7845 pci_release_regions(pdev);
7846 pci_set_drvdata(pdev, NULL);
7847 out_pci_disable_device:
7848 pci_disable_device(pdev);
7849 out_ieee80211_free_hw:
7850 ieee80211_free_hw(priv->hw);
7851 out:
7852 return err;
7853 }
7854
7855 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
7856 {
7857 struct iwl_priv *priv = pci_get_drvdata(pdev);
7858 struct list_head *p, *q;
7859 int i;
7860 unsigned long flags;
7861
7862 if (!priv)
7863 return;
7864
7865 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
7866
7867 if (priv->mac80211_registered) {
7868 ieee80211_unregister_hw(priv->hw);
7869 priv->mac80211_registered = 0;
7870 }
7871
7872 set_bit(STATUS_EXIT_PENDING, &priv->status);
7873
7874 iwl4965_down(priv);
7875
7876 /* make sure we flush any pending irq or
7877 * tasklet for the driver
7878 */
7879 spin_lock_irqsave(&priv->lock, flags);
7880 iwl4965_disable_interrupts(priv);
7881 spin_unlock_irqrestore(&priv->lock, flags);
7882
7883 iwl_synchronize_irq(priv);
7884
7885 /* Free MAC hash list for ADHOC */
7886 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
7887 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
7888 list_del(p);
7889 kfree(list_entry(p, struct iwl4965_ibss_seq, list));
7890 }
7891 }
7892
7893 iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT);
7894 iwl_dbgfs_unregister(priv);
7895 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
7896
7897 iwl4965_dealloc_ucode_pci(priv);
7898
7899 if (priv->rxq.bd)
7900 iwl4965_rx_queue_free(priv, &priv->rxq);
7901 iwl4965_hw_txq_ctx_free(priv);
7902
7903 iwl4965_unset_hw_params(priv);
7904 iwlcore_clear_stations_table(priv);
7905
7906
7907 /*netif_stop_queue(dev); */
7908 flush_workqueue(priv->workqueue);
7909
7910 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
7911 * priv->workqueue... so we can't take down the workqueue
7912 * until now... */
7913 destroy_workqueue(priv->workqueue);
7914 priv->workqueue = NULL;
7915
7916 pci_iounmap(pdev, priv->hw_base);
7917 pci_release_regions(pdev);
7918 pci_disable_device(pdev);
7919 pci_set_drvdata(pdev, NULL);
7920
7921 iwl_free_channel_map(priv);
7922 iwl4965_free_geos(priv);
7923
7924 if (priv->ibss_beacon)
7925 dev_kfree_skb(priv->ibss_beacon);
7926
7927 ieee80211_free_hw(priv->hw);
7928 }
7929
7930 #ifdef CONFIG_PM
7931
7932 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
7933 {
7934 struct iwl_priv *priv = pci_get_drvdata(pdev);
7935
7936 if (priv->is_open) {
7937 set_bit(STATUS_IN_SUSPEND, &priv->status);
7938 iwl4965_mac_stop(priv->hw);
7939 priv->is_open = 1;
7940 }
7941
7942 pci_set_power_state(pdev, PCI_D3hot);
7943
7944 return 0;
7945 }
7946
7947 static int iwl4965_pci_resume(struct pci_dev *pdev)
7948 {
7949 struct iwl_priv *priv = pci_get_drvdata(pdev);
7950
7951 pci_set_power_state(pdev, PCI_D0);
7952
7953 if (priv->is_open)
7954 iwl4965_mac_start(priv->hw);
7955
7956 clear_bit(STATUS_IN_SUSPEND, &priv->status);
7957 return 0;
7958 }
7959
7960 #endif /* CONFIG_PM */
7961
7962 /*****************************************************************************
7963 *
7964 * driver and module entry point
7965 *
7966 *****************************************************************************/
7967
7968 /* Hardware specific file defines the PCI IDs table for that hardware module */
7969 static struct pci_device_id iwl_hw_card_ids[] = {
7970 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
7971 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
7972 {0}
7973 };
7974 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
7975
7976 static struct pci_driver iwl_driver = {
7977 .name = DRV_NAME,
7978 .id_table = iwl_hw_card_ids,
7979 .probe = iwl4965_pci_probe,
7980 .remove = __devexit_p(iwl4965_pci_remove),
7981 #ifdef CONFIG_PM
7982 .suspend = iwl4965_pci_suspend,
7983 .resume = iwl4965_pci_resume,
7984 #endif
7985 };
7986
7987 static int __init iwl4965_init(void)
7988 {
7989
7990 int ret;
7991 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
7992 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
7993
7994 ret = iwl4965_rate_control_register();
7995 if (ret) {
7996 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
7997 return ret;
7998 }
7999
8000 ret = pci_register_driver(&iwl_driver);
8001 if (ret) {
8002 IWL_ERROR("Unable to initialize PCI module\n");
8003 goto error_register;
8004 }
8005 #ifdef CONFIG_IWLWIFI_DEBUG
8006 ret = driver_create_file(&iwl_driver.driver, &driver_attr_debug_level);
8007 if (ret) {
8008 IWL_ERROR("Unable to create driver sysfs file\n");
8009 goto error_debug;
8010 }
8011 #endif
8012
8013 return ret;
8014
8015 #ifdef CONFIG_IWLWIFI_DEBUG
8016 error_debug:
8017 pci_unregister_driver(&iwl_driver);
8018 #endif
8019 error_register:
8020 iwl4965_rate_control_unregister();
8021 return ret;
8022 }
8023
8024 static void __exit iwl4965_exit(void)
8025 {
8026 #ifdef CONFIG_IWLWIFI_DEBUG
8027 driver_remove_file(&iwl_driver.driver, &driver_attr_debug_level);
8028 #endif
8029 pci_unregister_driver(&iwl_driver);
8030 iwl4965_rate_control_unregister();
8031 }
8032
8033 module_exit(iwl4965_exit);
8034 module_init(iwl4965_init);
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