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iwlwifi: compile iwl-sta into iwlcore
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl4965-base.c
CommitLineData
b481de9c
ZY		 1/******************************************************************************
2 *
eb7ae89c 3 * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
b481de9c
ZY		 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
b481de9c
ZY		 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>
b481de9c
ZY		 41#include <linux/etherdevice.h>
42#include <linux/if_arp.h>
43
b481de9c
ZY		 44#include <net/mac80211.h>
45
46#include <asm/div64.h>
47
6bc913bd 48#include "iwl-eeprom.h"
3e0d4cb1 49#include "iwl-dev.h"
fee1247a 50#include "iwl-core.h"
3395f6e9 51#include "iwl-io.h"
b481de9c 52#include "iwl-helpers.h"
6974e363 53#include "iwl-sta.h"
f0832f13 54#include "iwl-calib.h"
b481de9c 55
c79dd5b5 56static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv,
bb8c093b 57 struct iwl4965_tx_queue *txq);
416e1438 58
b481de9c
ZY		 59/******************************************************************************
60 *
61 * module boiler plate
62 *
63 ******************************************************************************/
64
b481de9c
ZY		 65/*
66 * module name, copyright, version, etc.
67 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
68 */
69
70#define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
71
0a6857e7 72#ifdef CONFIG_IWLWIFI_DEBUG
b481de9c
ZY		 73#define VD "d"
74#else
75#define VD
76#endif
77
c8b0e6e1 78#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
b481de9c
ZY		 79#define VS "s"
80#else
81#define VS
82#endif
83
df48c323 84#define DRV_VERSION IWLWIFI_VERSION VD VS
b481de9c 85
b481de9c
ZY		 86
87MODULE_DESCRIPTION(DRV_DESCRIPTION);
88MODULE_VERSION(DRV_VERSION);
89MODULE_AUTHOR(DRV_COPYRIGHT);
90MODULE_LICENSE("GPL");
91
92__le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
93{
94 u16 fc = le16_to_cpu(hdr->frame_control);
95 int hdr_len = ieee80211_get_hdrlen(fc);
96
97 if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
98 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
99 return NULL;
100}
101
d1141dfb 102static const struct ieee80211_supported_band *iwl_get_hw_mode(
c79dd5b5 103 struct iwl_priv *priv, enum ieee80211_band band)
b481de9c 104{
8318d78a 105 return priv->hw->wiphy->bands[band];
b481de9c
ZY		 106}
107
bb8c093b 108static int iwl4965_is_empty_essid(const char *essid, int essid_len)
b481de9c
ZY		 109{
110 /* Single white space is for Linksys APs */
111 if (essid_len == 1 && essid[0] == ' ')
112 return 1;
113
114 /* Otherwise, if the entire essid is 0, we assume it is hidden */
115 while (essid_len) {
116 essid_len--;
117 if (essid[essid_len] != '\0')
118 return 0;
119 }
120
121 return 1;
122}
123
bb8c093b 124static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
b481de9c
ZY		 125{
126 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
127 const char *s = essid;
128 char *d = escaped;
129
bb8c093b 130 if (iwl4965_is_empty_essid(essid, essid_len)) {
b481de9c
ZY		 131 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
132 return escaped;
133 }
134
135 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
136 while (essid_len--) {
137 if (*s == '\0') {
138 *d++ = '\\';
139 *d++ = '0';
140 s++;
141 } else
142 *d++ = *s++;
143 }
144 *d = '\0';
145 return escaped;
146}
147
bf403db8 148
b481de9c
ZY		 149/*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
150 * DMA services
151 *
152 * Theory of operation
153 *
6440adb5
CB		 154 * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
155 * of buffer descriptors, each of which points to one or more data buffers for
156 * the device to read from or fill. Driver and device exchange status of each
157 * queue via "read" and "write" pointers. Driver keeps minimum of 2 empty
158 * entries in each circular buffer, to protect against confusing empty and full
159 * queue states.
160 *
161 * The device reads or writes the data in the queues via the device's several
162 * DMA/FIFO channels. Each queue is mapped to a single DMA channel.
b481de9c
ZY		 163 *
164 * For Tx queue, there are low mark and high mark limits. If, after queuing
165 * the packet for Tx, free space become < low mark, Tx queue stopped. When
166 * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
167 * Tx queue resumed.
168 *
6440adb5
CB		 169 * The 4965 operates with up to 17 queues: One receive queue, one transmit
170 * queue (#4) for sending commands to the device firmware, and 15 other
171 * Tx queues that may be mapped to prioritized Tx DMA/FIFO channels.
e3851447
BC		 172 *
173 * See more detailed info in iwl-4965-hw.h.
b481de9c
ZY		 174 ***************************************************/
175
fe01b477 176int iwl4965_queue_space(const struct iwl4965_queue *q)
b481de9c 177{
fc4b6853 178 int s = q->read_ptr - q->write_ptr;
b481de9c 179
fc4b6853 180 if (q->read_ptr > q->write_ptr)
b481de9c
ZY		 181 s -= q->n_bd;
182
183 if (s <= 0)
184 s += q->n_window;
185 /* keep some reserve to not confuse empty and full situations */
186 s -= 2;
187 if (s < 0)
188 s = 0;
189 return s;
190}
191
b481de9c 192
bb8c093b 193static inline int x2_queue_used(const struct iwl4965_queue *q, int i)
b481de9c 194{
fc4b6853
TW		 195 return q->write_ptr > q->read_ptr ?
196 (i >= q->read_ptr && i < q->write_ptr) :
197 !(i < q->read_ptr && i >= q->write_ptr);
b481de9c
ZY		 198}
199
bb8c093b 200static inline u8 get_cmd_index(struct iwl4965_queue *q, u32 index, int is_huge)
b481de9c 201{
6440adb5 202 /* This is for scan command, the big buffer at end of command array */
b481de9c 203 if (is_huge)
6440adb5 204 return q->n_window; /* must be power of 2 */
b481de9c 205
6440adb5 206 /* Otherwise, use normal size buffers */
b481de9c
ZY		 207 return index & (q->n_window - 1);
208}
209
bb8c093b 210const u8 iwl4965_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
b481de9c
ZY		 211
212/*************** STATION TABLE MANAGEMENT ****
9fbab516 213 * mac80211 should be examined to determine if sta_info is duplicating
b481de9c
ZY		 214 * the functionality provided here
215 */
216
217/**************************************************************/
218
01ebd063 219#if 0 /* temporary disable till we add real remove station */
6440adb5
CB		 220/**
221 * iwl4965_remove_station - Remove driver's knowledge of station.
222 *
223 * NOTE: This does not remove station from device's station table.
224 */
c79dd5b5 225static u8 iwl4965_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
b481de9c
ZY		 226{
227 int index = IWL_INVALID_STATION;
228 int i;
229 unsigned long flags;
230
231 spin_lock_irqsave(&priv->sta_lock, flags);
232
233 if (is_ap)
234 index = IWL_AP_ID;
235 else if (is_broadcast_ether_addr(addr))
5425e490 236 index = priv->hw_params.bcast_sta_id;
b481de9c 237 else
5425e490 238 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
b481de9c
ZY		 239 if (priv->stations[i].used &&
240 !compare_ether_addr(priv->stations[i].sta.sta.addr,
241 addr)) {
242 index = i;
243 break;
244 }
245
246 if (unlikely(index == IWL_INVALID_STATION))
247 goto out;
248
249 if (priv->stations[index].used) {
250 priv->stations[index].used = 0;
251 priv->num_stations--;
252 }
253
254 BUG_ON(priv->num_stations < 0);
255
256out:
257 spin_unlock_irqrestore(&priv->sta_lock, flags);
258 return 0;
259}
556f8db7 260#endif
b481de9c 261
6440adb5
CB		 262/**
263 * iwl4965_add_station_flags - Add station to tables in driver and device
264 */
c79dd5b5 265u8 iwl4965_add_station_flags(struct iwl_priv *priv, const u8 *addr,
67d62035 266 int is_ap, u8 flags, void *ht_data)
b481de9c
ZY		 267{
268 int i;
269 int index = IWL_INVALID_STATION;
6def9761 270 struct iwl_station_entry *station;
b481de9c 271 unsigned long flags_spin;
0795af57 272 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 273
274 spin_lock_irqsave(&priv->sta_lock, flags_spin);
275 if (is_ap)
276 index = IWL_AP_ID;
277 else if (is_broadcast_ether_addr(addr))
5425e490 278 index = priv->hw_params.bcast_sta_id;
b481de9c 279 else
5425e490 280 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
b481de9c
ZY		 281 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
282 addr)) {
283 index = i;
284 break;
285 }
286
287 if (!priv->stations[i].used &&
288 index == IWL_INVALID_STATION)
289 index = i;
290 }
291
292
9fbab516
BC		 293 /* These two conditions have the same outcome, but keep them separate
294 since they have different meanings */
b481de9c
ZY		 295 if (unlikely(index == IWL_INVALID_STATION)) {
296 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
297 return index;
298 }
299
300 if (priv->stations[index].used &&
301 !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
302 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
303 return index;
304 }
305
306
0795af57 307 IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
b481de9c
ZY		 308 station = &priv->stations[index];
309 station->used = 1;
310 priv->num_stations++;
311
6440adb5 312 /* Set up the REPLY_ADD_STA command to send to device */
133636de 313 memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd));
b481de9c
ZY		 314 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
315 station->sta.mode = 0;
316 station->sta.sta.sta_id = index;
317 station->sta.station_flags = 0;
318
c8b0e6e1 319#ifdef CONFIG_IWL4965_HT
b481de9c 320 /* BCAST station and IBSS stations do not work in HT mode */
5425e490 321 if (index != priv->hw_params.bcast_sta_id &&
b481de9c 322 priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
67d62035
RR		 323 iwl4965_set_ht_add_station(priv, index,
324 (struct ieee80211_ht_info *) ht_data);
c8b0e6e1 325#endif /*CONFIG_IWL4965_HT*/
b481de9c
ZY		 326
327 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
6440adb5
CB		 328
329 /* Add station to device's station table */
133636de 330 iwl_send_add_sta(priv, &station->sta, flags);
b481de9c
ZY		 331 return index;
332
333}
334
b481de9c 335
b481de9c
ZY		 336
337/*************** HOST COMMAND QUEUE FUNCTIONS *****/
338
b481de9c 339/**
bb8c093b 340 * iwl4965_enqueue_hcmd - enqueue a uCode command
b481de9c
ZY		 341 * @priv: device private data point
342 * @cmd: a point to the ucode command structure
343 *
344 * The function returns < 0 values to indicate the operation is
345 * failed. On success, it turns the index (> 0) of command in the
346 * command queue.
347 */
857485c0 348int iwl4965_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
b481de9c 349{
bb8c093b
CH		 350 struct iwl4965_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
351 struct iwl4965_queue *q = &txq->q;
1053d35f 352 struct iwl_tfd_frame *tfd;
b481de9c 353 u32 *control_flags;
857485c0 354 struct iwl_cmd *out_cmd;
b481de9c
ZY		 355 u32 idx;
356 u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
357 dma_addr_t phys_addr;
358 int ret;
359 unsigned long flags;
360
361 /* If any of the command structures end up being larger than
362 * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
363 * we will need to increase the size of the TFD entries */
364 BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
365 !(cmd->meta.flags & CMD_SIZE_HUGE));
366
fee1247a 367 if (iwl_is_rfkill(priv)) {
c342a1b9
GG		 368 IWL_DEBUG_INFO("Not sending command - RF KILL");
369 return -EIO;
370 }
371
bb8c093b 372 if (iwl4965_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
b481de9c
ZY		 373 IWL_ERROR("No space for Tx\n");
374 return -ENOSPC;
375 }
376
377 spin_lock_irqsave(&priv->hcmd_lock, flags);
378
fc4b6853 379 tfd = &txq->bd[q->write_ptr];
b481de9c
ZY		 380 memset(tfd, 0, sizeof(*tfd));
381
382 control_flags = (u32 *) tfd;
383
fc4b6853 384 idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
b481de9c
ZY		 385 out_cmd = &txq->cmd[idx];
386
387 out_cmd->hdr.cmd = cmd->id;
388 memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
389 memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
390
391 /* At this point, the out_cmd now has all of the incoming cmd
392 * information */
393
394 out_cmd->hdr.flags = 0;
395 out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
fc4b6853 396 INDEX_TO_SEQ(q->write_ptr));
b481de9c
ZY		 397 if (out_cmd->meta.flags & CMD_SIZE_HUGE)
398 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
399
400 phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
857485c0 401 offsetof(struct iwl_cmd, hdr);
bb8c093b 402 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
b481de9c
ZY		 403
404 IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
405 "%d bytes at %d[%d]:%d\n",
406 get_cmd_string(out_cmd->hdr.cmd),
407 out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
fc4b6853 408 fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
b481de9c
ZY		 409
410 txq->need_update = 1;
6440adb5
CB		 411
412 /* Set up entry in queue's byte count circular buffer */
e2a722eb 413 priv->cfg->ops->lib->txq_update_byte_cnt_tbl(priv, txq, 0);
6440adb5
CB		 414
415 /* Increment and update queue's write index */
c54b679d 416 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
e2a722eb 417 ret = iwl4965_tx_queue_update_write_ptr(priv, txq);
b481de9c
ZY		 418
419 spin_unlock_irqrestore(&priv->hcmd_lock, flags);
420 return ret ? ret : idx;
421}
422
deb09c43
EG		 423static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
424{
425 struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
426
427 if (hw_decrypt)
428 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
429 else
430 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
431
432}
433
b481de9c 434/**
bb8c093b 435 * iwl4965_rxon_add_station - add station into station table.
b481de9c
ZY		 436 *
437 * there is only one AP station with id= IWL_AP_ID
9fbab516
BC		 438 * NOTE: mutex must be held before calling this fnction
439 */
c79dd5b5 440static int iwl4965_rxon_add_station(struct iwl_priv *priv,
b481de9c
ZY		 441 const u8 *addr, int is_ap)
442{
556f8db7 443 u8 sta_id;
b481de9c 444
6440adb5 445 /* Add station to device's station table */
67d62035
RR		 446#ifdef CONFIG_IWL4965_HT
447 struct ieee80211_conf *conf = &priv->hw->conf;
448 struct ieee80211_ht_info *cur_ht_config = &conf->ht_conf;
449
450 if ((is_ap) &&
451 (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) &&
452 (priv->iw_mode == IEEE80211_IF_TYPE_STA))
453 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
454 0, cur_ht_config);
455 else
456#endif /* CONFIG_IWL4965_HT */
457 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
458 0, NULL);
6440adb5
CB		 459
460 /* Set up default rate scaling table in device's station table */
b481de9c
ZY		 461 iwl4965_add_station(priv, addr, is_ap);
462
556f8db7 463 return sta_id;
b481de9c
ZY		 464}
465
b481de9c 466/**
bb8c093b 467 * iwl4965_check_rxon_cmd - validate RXON structure is valid
b481de9c
ZY		 468 *
469 * NOTE: This is really only useful during development and can eventually
470 * be #ifdef'd out once the driver is stable and folks aren't actively
471 * making changes
472 */
bb8c093b 473static int iwl4965_check_rxon_cmd(struct iwl4965_rxon_cmd *rxon)
b481de9c
ZY		 474{
475 int error = 0;
476 int counter = 1;
477
478 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
479 error |= le32_to_cpu(rxon->flags &
480 (RXON_FLG_TGJ_NARROW_BAND_MSK |
481 RXON_FLG_RADAR_DETECT_MSK));
482 if (error)
483 IWL_WARNING("check 24G fields %d | %d\n",
484 counter++, error);
485 } else {
486 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
487 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
488 if (error)
489 IWL_WARNING("check 52 fields %d | %d\n",
490 counter++, error);
491 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
492 if (error)
493 IWL_WARNING("check 52 CCK %d | %d\n",
494 counter++, error);
495 }
496 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
497 if (error)
498 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
499
500 /* make sure basic rates 6Mbps and 1Mbps are supported */
501 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
502 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
503 if (error)
504 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
505
506 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
507 if (error)
508 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
509
510 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
511 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
512 if (error)
513 IWL_WARNING("check CCK and short slot %d | %d\n",
514 counter++, error);
515
516 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
517 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
518 if (error)
519 IWL_WARNING("check CCK & auto detect %d | %d\n",
520 counter++, error);
521
522 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
523 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
524 if (error)
525 IWL_WARNING("check TGG and auto detect %d | %d\n",
526 counter++, error);
527
528 if (error)
529 IWL_WARNING("Tuning to channel %d\n",
530 le16_to_cpu(rxon->channel));
531
532 if (error) {
bb8c093b 533 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
b481de9c
ZY		 534 return -1;
535 }
536 return 0;
537}
538
539/**
9fbab516 540 * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
01ebd063 541 * @priv: staging_rxon is compared to active_rxon
b481de9c 542 *
9fbab516
BC		 543 * If the RXON structure is changing enough to require a new tune,
544 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
545 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
b481de9c 546 */
c79dd5b5 547static int iwl4965_full_rxon_required(struct iwl_priv *priv)
b481de9c
ZY		 548{
549
550 /* These items are only settable from the full RXON command */
551 if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
552 compare_ether_addr(priv->staging_rxon.bssid_addr,
553 priv->active_rxon.bssid_addr) ||
554 compare_ether_addr(priv->staging_rxon.node_addr,
555 priv->active_rxon.node_addr) ||
556 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
557 priv->active_rxon.wlap_bssid_addr) ||
558 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
559 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
560 (priv->staging_rxon.air_propagation !=
561 priv->active_rxon.air_propagation) ||
562 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
563 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
564 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
565 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
566 (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
567 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
568 return 1;
569
570 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
571 * be updated with the RXON_ASSOC command -- however only some
572 * flag transitions are allowed using RXON_ASSOC */
573
574 /* Check if we are not switching bands */
575 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
576 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
577 return 1;
578
579 /* Check if we are switching association toggle */
580 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
581 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
582 return 1;
583
584 return 0;
585}
586
b481de9c 587/**
bb8c093b 588 * iwl4965_commit_rxon - commit staging_rxon to hardware
b481de9c 589 *
01ebd063 590 * The RXON command in staging_rxon is committed to the hardware and
b481de9c
ZY		 591 * the active_rxon structure is updated with the new data. This
592 * function correctly transitions out of the RXON_ASSOC_MSK state if
593 * a HW tune is required based on the RXON structure changes.
594 */
c79dd5b5 595static int iwl4965_commit_rxon(struct iwl_priv *priv)
b481de9c
ZY		 596{
597 /* cast away the const for active_rxon in this function */
bb8c093b 598 struct iwl4965_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
0795af57 599 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 600 int rc = 0;
601
fee1247a 602 if (!iwl_is_alive(priv))
b481de9c
ZY		 603 return -1;
604
605 /* always get timestamp with Rx frame */
606 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
607
bb8c093b 608 rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
b481de9c
ZY		 609 if (rc) {
610 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
611 return -EINVAL;
612 }
613
614 /* If we don't need to send a full RXON, we can use
bb8c093b 615 * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
b481de9c 616 * and other flags for the current radio configuration. */
bb8c093b 617 if (!iwl4965_full_rxon_required(priv)) {
7e8c519e 618 rc = iwl_send_rxon_assoc(priv);
b481de9c
ZY		 619 if (rc) {
620 IWL_ERROR("Error setting RXON_ASSOC "
621 "configuration (%d).\n", rc);
622 return rc;
623 }
624
625 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
626
627 return 0;
628 }
629
630 /* station table will be cleared */
631 priv->assoc_station_added = 0;
632
b481de9c
ZY		 633 /* If we are currently associated and the new config requires
634 * an RXON_ASSOC and the new config wants the associated mask enabled,
635 * we must clear the associated from the active configuration
636 * before we apply the new config */
3109ece1 637 if (iwl_is_associated(priv) &&
b481de9c
ZY		 638 (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
639 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
640 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
641
857485c0 642 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
bb8c093b 643 sizeof(struct iwl4965_rxon_cmd),
b481de9c
ZY		 644 &priv->active_rxon);
645
646 /* If the mask clearing failed then we set
647 * active_rxon back to what it was previously */
648 if (rc) {
649 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
650 IWL_ERROR("Error clearing ASSOC_MSK on current "
651 "configuration (%d).\n", rc);
652 return rc;
653 }
b481de9c
ZY		 654 }
655
656 IWL_DEBUG_INFO("Sending RXON\n"
657 "* with%s RXON_FILTER_ASSOC_MSK\n"
658 "* channel = %d\n"
0795af57 659 "* bssid = %s\n",
b481de9c
ZY		 660 ((priv->staging_rxon.filter_flags &
661 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
662 le16_to_cpu(priv->staging_rxon.channel),
0795af57 663 print_mac(mac, priv->staging_rxon.bssid_addr));
b481de9c 664
099b40b7 665 iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
b481de9c 666 /* Apply the new configuration */
857485c0 667 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
bb8c093b 668 sizeof(struct iwl4965_rxon_cmd), &priv->staging_rxon);
b481de9c
ZY		 669 if (rc) {
670 IWL_ERROR("Error setting new configuration (%d).\n", rc);
671 return rc;
672 }
673
bf85ea4f 674 iwlcore_clear_stations_table(priv);
556f8db7 675
b481de9c
ZY		 676 if (!priv->error_recovering)
677 priv->start_calib = 0;
678
f0832f13 679 iwl_init_sensitivity(priv);
b481de9c
ZY		 680
681 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
682
683 /* If we issue a new RXON command which required a tune then we must
684 * send a new TXPOWER command or we won't be able to Tx any frames */
bb8c093b 685 rc = iwl4965_hw_reg_send_txpower(priv);
b481de9c
ZY		 686 if (rc) {
687 IWL_ERROR("Error setting Tx power (%d).\n", rc);
688 return rc;
689 }
690
691 /* Add the broadcast address so we can send broadcast frames */
bb8c093b 692 if (iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0) ==
b481de9c
ZY		 693 IWL_INVALID_STATION) {
694 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
695 return -EIO;
696 }
697
698 /* If we have set the ASSOC_MSK and we are in BSS mode then
699 * add the IWL_AP_ID to the station rate table */
3109ece1 700 if (iwl_is_associated(priv) &&
b481de9c 701 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
bb8c093b 702 if (iwl4965_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
b481de9c
ZY		 703 == IWL_INVALID_STATION) {
704 IWL_ERROR("Error adding AP address for transmit.\n");
705 return -EIO;
706 }
707 priv->assoc_station_added = 1;
6974e363
EG		 708 if (priv->default_wep_key &&
709 iwl_send_static_wepkey_cmd(priv, 0))
710 IWL_ERROR("Could not send WEP static key.\n");
b481de9c
ZY		 711 }
712
713 return 0;
714}
715
5da4b55f
MA		 716void iwl4965_update_chain_flags(struct iwl_priv *priv)
717{
718
c7de35cd 719 iwl_set_rxon_chain(priv);
5da4b55f
MA		 720 iwl4965_commit_rxon(priv);
721}
722
c79dd5b5 723static int iwl4965_send_bt_config(struct iwl_priv *priv)
b481de9c 724{
bb8c093b 725 struct iwl4965_bt_cmd bt_cmd = {
b481de9c
ZY		 726 .flags = 3,
727 .lead_time = 0xAA,
728 .max_kill = 1,
729 .kill_ack_mask = 0,
730 .kill_cts_mask = 0,
731 };
732
857485c0 733 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
bb8c093b 734 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
b481de9c
ZY		 735}
736
c79dd5b5 737static int iwl4965_send_scan_abort(struct iwl_priv *priv)
b481de9c 738{
db11d634
TW		 739 int ret = 0;
740 struct iwl_rx_packet *res;
857485c0 741 struct iwl_host_cmd cmd = {
b481de9c
ZY		 742 .id = REPLY_SCAN_ABORT_CMD,
743 .meta.flags = CMD_WANT_SKB,
744 };
745
746 /* If there isn't a scan actively going on in the hardware
747 * then we are in between scan bands and not actually
748 * actively scanning, so don't send the abort command */
749 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
750 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
751 return 0;
752 }
753
db11d634
TW		 754 ret = iwl_send_cmd_sync(priv, &cmd);
755 if (ret) {
b481de9c 756 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
db11d634 757 return ret;
b481de9c
ZY		 758 }
759
db11d634 760 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
b481de9c
ZY		 761 if (res->u.status != CAN_ABORT_STATUS) {
762 /* The scan abort will return 1 for success or
763 * 2 for "failure". A failure condition can be
764 * due to simply not being in an active scan which
765 * can occur if we send the scan abort before we
766 * the microcode has notified us that a scan is
767 * completed. */
768 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
769 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
770 clear_bit(STATUS_SCAN_HW, &priv->status);
771 }
772
773 dev_kfree_skb_any(cmd.meta.u.skb);
774
db11d634 775 return ret;
b481de9c
ZY		 776}
777
b481de9c
ZY		 778/*
779 * CARD_STATE_CMD
780 *
9fbab516 781 * Use: Sets the device's internal card state to enable, disable, or halt
b481de9c
ZY		 782 *
783 * When in the 'enable' state the card operates as normal.
784 * When in the 'disable' state, the card enters into a low power mode.
785 * When in the 'halt' state, the card is shut down and must be fully
786 * restarted to come back on.
787 */
c79dd5b5 788static int iwl4965_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
b481de9c 789{
857485c0 790 struct iwl_host_cmd cmd = {
b481de9c
ZY		 791 .id = REPLY_CARD_STATE_CMD,
792 .len = sizeof(u32),
793 .data = &flags,
794 .meta.flags = meta_flag,
795 };
796
857485c0 797 return iwl_send_cmd(priv, &cmd);
b481de9c
ZY		 798}
799
c79dd5b5 800static void iwl4965_clear_free_frames(struct iwl_priv *priv)
b481de9c
ZY		 801{
802 struct list_head *element;
803
804 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
805 priv->frames_count);
806
807 while (!list_empty(&priv->free_frames)) {
808 element = priv->free_frames.next;
809 list_del(element);
bb8c093b 810 kfree(list_entry(element, struct iwl4965_frame, list));
b481de9c
ZY		 811 priv->frames_count--;
812 }
813
814 if (priv->frames_count) {
815 IWL_WARNING("%d frames still in use. Did we lose one?\n",
816 priv->frames_count);
817 priv->frames_count = 0;
818 }
819}
820
c79dd5b5 821static struct iwl4965_frame *iwl4965_get_free_frame(struct iwl_priv *priv)
b481de9c 822{
bb8c093b 823 struct iwl4965_frame *frame;
b481de9c
ZY		 824 struct list_head *element;
825 if (list_empty(&priv->free_frames)) {
826 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
827 if (!frame) {
828 IWL_ERROR("Could not allocate frame!\n");
829 return NULL;
830 }
831
832 priv->frames_count++;
833 return frame;
834 }
835
836 element = priv->free_frames.next;
837 list_del(element);
bb8c093b 838 return list_entry(element, struct iwl4965_frame, list);
b481de9c
ZY		 839}
840
c79dd5b5 841static void iwl4965_free_frame(struct iwl_priv *priv, struct iwl4965_frame *frame)
b481de9c
ZY		 842{
843 memset(frame, 0, sizeof(*frame));
844 list_add(&frame->list, &priv->free_frames);
845}
846
c79dd5b5 847unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
b481de9c
ZY		 848 struct ieee80211_hdr *hdr,
849 const u8 *dest, int left)
850{
851
3109ece1 852 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
b481de9c
ZY		 853 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
854 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
855 return 0;
856
857 if (priv->ibss_beacon->len > left)
858 return 0;
859
860 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
861
862 return priv->ibss_beacon->len;
863}
864
39e88504 865static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
b481de9c 866{
39e88504
GC		 867 int i;
868 int rate_mask;
869
870 /* Set rate mask*/
871 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
872 rate_mask = priv->active_rate_basic & 0xF;
873 else
874 rate_mask = priv->active_rate_basic & 0xFF0;
b481de9c 875
39e88504 876 /* Find lowest valid rate */
b481de9c 877 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
39e88504 878 i = iwl4965_rates[i].next_ieee) {
b481de9c 879 if (rate_mask & (1 << i))
bb8c093b 880 return iwl4965_rates[i].plcp;
b481de9c
ZY		 881 }
882
39e88504
GC		 883 /* No valid rate was found. Assign the lowest one */
884 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
885 return IWL_RATE_1M_PLCP;
886 else
887 return IWL_RATE_6M_PLCP;
b481de9c
ZY		 888}
889
c79dd5b5 890static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
b481de9c 891{
bb8c093b 892 struct iwl4965_frame *frame;
b481de9c
ZY		 893 unsigned int frame_size;
894 int rc;
895 u8 rate;
896
bb8c093b 897 frame = iwl4965_get_free_frame(priv);
b481de9c
ZY		 898
899 if (!frame) {
900 IWL_ERROR("Could not obtain free frame buffer for beacon "
901 "command.\n");
902 return -ENOMEM;
903 }
904
39e88504 905 rate = iwl4965_rate_get_lowest_plcp(priv);
b481de9c 906
bb8c093b 907 frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
b481de9c 908
857485c0 909 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
b481de9c
ZY		 910 &frame->u.cmd[0]);
911
bb8c093b 912 iwl4965_free_frame(priv, frame);
b481de9c
ZY		 913
914 return rc;
915}
916
b481de9c
ZY		 917/******************************************************************************
918 *
919 * Misc. internal state and helper functions
920 *
921 ******************************************************************************/
b481de9c 922
b481de9c 923/**
bb8c093b 924 * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
b481de9c
ZY		 925 *
926 * return : set the bit for each supported rate insert in ie
927 */
bb8c093b 928static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
c7c46676 929 u16 basic_rate, int *left)
b481de9c
ZY		 930{
931 u16 ret_rates = 0, bit;
932 int i;
c7c46676
TW		 933 u8 *cnt = ie;
934 u8 *rates = ie + 1;
b481de9c
ZY		 935
936 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
937 if (bit & supported_rate) {
938 ret_rates |= bit;
bb8c093b 939 rates[*cnt] = iwl4965_rates[i].ieee |
c7c46676
TW		 940 ((bit & basic_rate) ? 0x80 : 0x00);
941 (*cnt)++;
942 (*left)--;
943 if ((*left <= 0) ||
944 (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
b481de9c
ZY		 945 break;
946 }
947 }
948
949 return ret_rates;
950}
951
d1141dfb
EG		 952#ifdef CONFIG_IWL4965_HT
953static void iwl4965_ht_conf(struct iwl_priv *priv,
954 struct ieee80211_bss_conf *bss_conf)
955{
956 struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
957 struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
958 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
959
960 IWL_DEBUG_MAC80211("enter: \n");
961
962 iwl_conf->is_ht = bss_conf->assoc_ht;
963
964 if (!iwl_conf->is_ht)
965 return;
966
967 priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
968
969 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
970 iwl_conf->sgf |= 0x1;
971 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
972 iwl_conf->sgf |= 0x2;
973
974 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
975 iwl_conf->max_amsdu_size =
976 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
977
978 iwl_conf->supported_chan_width =
979 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
980 iwl_conf->extension_chan_offset =
981 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
982 /* If no above or below channel supplied disable FAT channel */
983 if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
984 iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
985 iwl_conf->supported_chan_width = 0;
986
987 iwl_conf->tx_mimo_ps_mode =
988 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
989 memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
990
991 iwl_conf->control_channel = ht_bss_conf->primary_channel;
992 iwl_conf->tx_chan_width =
993 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
994 iwl_conf->ht_protection =
995 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
996 iwl_conf->non_GF_STA_present =
997 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
998
999 IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
1000 IWL_DEBUG_MAC80211("leave\n");
1001}
1002
1003static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
1004 u8 *pos, int *left)
1005{
1006 struct ieee80211_ht_cap *ht_cap;
1007
1008 if (!sband || !sband->ht_info.ht_supported)
1009 return;
1010
1011 if (*left < sizeof(struct ieee80211_ht_cap))
1012 return;
1013
1014 *pos++ = sizeof(struct ieee80211_ht_cap);
1015 ht_cap = (struct ieee80211_ht_cap *) pos;
1016
1017 ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
1018 memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
1019 ht_cap->ampdu_params_info =
1020 (sband->ht_info.ampdu_factor & IEEE80211_HT_CAP_AMPDU_FACTOR) |
1021 ((sband->ht_info.ampdu_density << 2) &
1022 IEEE80211_HT_CAP_AMPDU_DENSITY);
1023 *left -= sizeof(struct ieee80211_ht_cap);
1024}
1025#else
1026static inline void iwl4965_ht_conf(struct iwl_priv *priv,
1027 struct ieee80211_bss_conf *bss_conf)
1028{
1029}
1030static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
1031 u8 *pos, int *left)
1032{
1033}
1034#endif
1035
1036
b481de9c 1037/**
bb8c093b 1038 * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
b481de9c 1039 */
c79dd5b5 1040static u16 iwl4965_fill_probe_req(struct iwl_priv *priv,
78330fdd
TW		 1041 enum ieee80211_band band,
1042 struct ieee80211_mgmt *frame,
1043 int left, int is_direct)
b481de9c
ZY		 1044{
1045 int len = 0;
1046 u8 *pos = NULL;
bee488db 1047 u16 active_rates, ret_rates, cck_rates, active_rate_basic;
78330fdd 1048 const struct ieee80211_supported_band *sband =
d1141dfb 1049 iwl_get_hw_mode(priv, band);
b481de9c
ZY		 1050
1051 /* Make sure there is enough space for the probe request,
1052 * two mandatory IEs and the data */
1053 left -= 24;
1054 if (left < 0)
1055 return 0;
1056 len += 24;
1057
1058 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
bb8c093b 1059 memcpy(frame->da, iwl4965_broadcast_addr, ETH_ALEN);
b481de9c 1060 memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
bb8c093b 1061 memcpy(frame->bssid, iwl4965_broadcast_addr, ETH_ALEN);
b481de9c
ZY		 1062 frame->seq_ctrl = 0;
1063
1064 /* fill in our indirect SSID IE */
1065 /* ...next IE... */
1066
1067 left -= 2;
1068 if (left < 0)
1069 return 0;
1070 len += 2;
1071 pos = &(frame->u.probe_req.variable[0]);
1072 *pos++ = WLAN_EID_SSID;
1073 *pos++ = 0;
1074
1075 /* fill in our direct SSID IE... */
1076 if (is_direct) {
1077 /* ...next IE... */
1078 left -= 2 + priv->essid_len;
1079 if (left < 0)
1080 return 0;
1081 /* ... fill it in... */
1082 *pos++ = WLAN_EID_SSID;
1083 *pos++ = priv->essid_len;
1084 memcpy(pos, priv->essid, priv->essid_len);
1085 pos += priv->essid_len;
1086 len += 2 + priv->essid_len;
1087 }
1088
1089 /* fill in supported rate */
1090 /* ...next IE... */
1091 left -= 2;
1092 if (left < 0)
1093 return 0;
c7c46676 1094
b481de9c
ZY		 1095 /* ... fill it in... */
1096 *pos++ = WLAN_EID_SUPP_RATES;
1097 *pos = 0;
c7c46676 1098
bee488db 1099 /* exclude 60M rate */
1100 active_rates = priv->rates_mask;
1101 active_rates &= ~IWL_RATE_60M_MASK;
1102
1103 active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
b481de9c 1104
c7c46676 1105 cck_rates = IWL_CCK_RATES_MASK & active_rates;
bb8c093b 1106 ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
bee488db 1107 active_rate_basic, &left);
c7c46676
TW		 1108 active_rates &= ~ret_rates;
1109
bb8c093b 1110 ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
bee488db 1111 active_rate_basic, &left);
c7c46676
TW		 1112 active_rates &= ~ret_rates;
1113
b481de9c
ZY		 1114 len += 2 + *pos;
1115 pos += (*pos) + 1;
c7c46676 1116 if (active_rates == 0)
b481de9c
ZY		 1117 goto fill_end;
1118
1119 /* fill in supported extended rate */
1120 /* ...next IE... */
1121 left -= 2;
1122 if (left < 0)
1123 return 0;
1124 /* ... fill it in... */
1125 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1126 *pos = 0;
bb8c093b 1127 iwl4965_supported_rate_to_ie(pos, active_rates,
bee488db 1128 active_rate_basic, &left);
b481de9c
ZY		 1129 if (*pos > 0)
1130 len += 2 + *pos;
1131
b481de9c 1132 fill_end:
d1141dfb
EG		 1133 /* fill in HT IE */
1134 left -= 2;
1135 if (left < 0)
1136 return 0;
1137
1138 *pos++ = WLAN_EID_HT_CAPABILITY;
1139 *pos = 0;
1140
1141 iwl_ht_cap_to_ie(sband, pos, &left);
1142
1143 if (*pos > 0)
1144 len += 2 + *pos;
b481de9c
ZY		 1145 return (u16)len;
1146}
1147
1148/*
1149 * QoS support
1150*/
c79dd5b5 1151static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
bb8c093b 1152 struct iwl4965_qosparam_cmd *qos)
b481de9c
ZY		 1153{
1154
857485c0 1155 return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
bb8c093b 1156 sizeof(struct iwl4965_qosparam_cmd), qos);
b481de9c
ZY		 1157}
1158
c79dd5b5 1159static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
b481de9c
ZY		 1160{
1161 unsigned long flags;
1162
b481de9c
ZY		 1163 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1164 return;
1165
1166 if (!priv->qos_data.qos_enable)
1167 return;
1168
1169 spin_lock_irqsave(&priv->lock, flags);
1170 priv->qos_data.def_qos_parm.qos_flags = 0;
1171
1172 if (priv->qos_data.qos_cap.q_AP.queue_request &&
1173 !priv->qos_data.qos_cap.q_AP.txop_request)
1174 priv->qos_data.def_qos_parm.qos_flags |=
1175 QOS_PARAM_FLG_TXOP_TYPE_MSK;
b481de9c
ZY		 1176 if (priv->qos_data.qos_active)
1177 priv->qos_data.def_qos_parm.qos_flags |=
1178 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1179
c8b0e6e1 1180#ifdef CONFIG_IWL4965_HT
fd105e79 1181 if (priv->current_ht_config.is_ht)
f1f1f5c7 1182 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
c8b0e6e1 1183#endif /* CONFIG_IWL4965_HT */
f1f1f5c7 1184
b481de9c
ZY		 1185 spin_unlock_irqrestore(&priv->lock, flags);
1186
3109ece1 1187 if (force || iwl_is_associated(priv)) {
f1f1f5c7
TW		 1188 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
1189 priv->qos_data.qos_active,
1190 priv->qos_data.def_qos_parm.qos_flags);
b481de9c 1191
bb8c093b 1192 iwl4965_send_qos_params_command(priv,
b481de9c
ZY		 1193 &(priv->qos_data.def_qos_parm));
1194 }
1195}
1196
c79dd5b5 1197int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
b481de9c
ZY		 1198{
1199 /* Filter incoming packets to determine if they are targeted toward
1200 * this network, discarding packets coming from ourselves */
1201 switch (priv->iw_mode) {
1202 case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
1203 /* packets from our adapter are dropped (echo) */
1204 if (!compare_ether_addr(header->addr2, priv->mac_addr))
1205 return 0;
1206 /* {broad,multi}cast packets to our IBSS go through */
1207 if (is_multicast_ether_addr(header->addr1))
1208 return !compare_ether_addr(header->addr3, priv->bssid);
1209 /* packets to our adapter go through */
1210 return !compare_ether_addr(header->addr1, priv->mac_addr);
1211 case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
1212 /* packets from our adapter are dropped (echo) */
1213 if (!compare_ether_addr(header->addr3, priv->mac_addr))
1214 return 0;
1215 /* {broad,multi}cast packets to our BSS go through */
1216 if (is_multicast_ether_addr(header->addr1))
1217 return !compare_ether_addr(header->addr2, priv->bssid);
1218 /* packets to our adapter go through */
1219 return !compare_ether_addr(header->addr1, priv->mac_addr);
69dc5d9d
TW		 1220 default:
1221 break;
b481de9c
ZY		 1222 }
1223
1224 return 1;
1225}
1226
1227#define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1228
bb8c093b 1229static const char *iwl4965_get_tx_fail_reason(u32 status)
b481de9c
ZY		 1230{
1231 switch (status & TX_STATUS_MSK) {
1232 case TX_STATUS_SUCCESS:
1233 return "SUCCESS";
1234 TX_STATUS_ENTRY(SHORT_LIMIT);
1235 TX_STATUS_ENTRY(LONG_LIMIT);
1236 TX_STATUS_ENTRY(FIFO_UNDERRUN);
1237 TX_STATUS_ENTRY(MGMNT_ABORT);
1238 TX_STATUS_ENTRY(NEXT_FRAG);
1239 TX_STATUS_ENTRY(LIFE_EXPIRE);
1240 TX_STATUS_ENTRY(DEST_PS);
1241 TX_STATUS_ENTRY(ABORTED);
1242 TX_STATUS_ENTRY(BT_RETRY);
1243 TX_STATUS_ENTRY(STA_INVALID);
1244 TX_STATUS_ENTRY(FRAG_DROPPED);
1245 TX_STATUS_ENTRY(TID_DISABLE);
1246 TX_STATUS_ENTRY(FRAME_FLUSHED);
1247 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
1248 TX_STATUS_ENTRY(TX_LOCKED);
1249 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
1250 }
1251
1252 return "UNKNOWN";
1253}
1254
1255/**
bb8c093b 1256 * iwl4965_scan_cancel - Cancel any currently executing HW scan
b481de9c
ZY		 1257 *
1258 * NOTE: priv->mutex is not required before calling this function
1259 */
c79dd5b5 1260static int iwl4965_scan_cancel(struct iwl_priv *priv)
b481de9c
ZY		 1261{
1262 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1263 clear_bit(STATUS_SCANNING, &priv->status);
1264 return 0;
1265 }
1266
1267 if (test_bit(STATUS_SCANNING, &priv->status)) {
1268 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1269 IWL_DEBUG_SCAN("Queuing scan abort.\n");
1270 set_bit(STATUS_SCAN_ABORTING, &priv->status);
1271 queue_work(priv->workqueue, &priv->abort_scan);
1272
1273 } else
1274 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
1275
1276 return test_bit(STATUS_SCANNING, &priv->status);
1277 }
1278
1279 return 0;
1280}
1281
1282/**
bb8c093b 1283 * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
b481de9c
ZY		 1284 * @ms: amount of time to wait (in milliseconds) for scan to abort
1285 *
1286 * NOTE: priv->mutex must be held before calling this function
1287 */
c79dd5b5 1288static int iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
b481de9c
ZY		 1289{
1290 unsigned long now = jiffies;
1291 int ret;
1292
bb8c093b 1293 ret = iwl4965_scan_cancel(priv);
b481de9c
ZY		 1294 if (ret && ms) {
1295 mutex_unlock(&priv->mutex);
1296 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
1297 test_bit(STATUS_SCANNING, &priv->status))
1298 msleep(1);
1299 mutex_lock(&priv->mutex);
1300
1301 return test_bit(STATUS_SCANNING, &priv->status);
1302 }
1303
1304 return ret;
1305}
1306
c79dd5b5 1307static void iwl4965_sequence_reset(struct iwl_priv *priv)
b481de9c
ZY		 1308{
1309 /* Reset ieee stats */
1310
1311 /* We don't reset the net_device_stats (ieee->stats) on
1312 * re-association */
1313
1314 priv->last_seq_num = -1;
1315 priv->last_frag_num = -1;
1316 priv->last_packet_time = 0;
1317
bb8c093b 1318 iwl4965_scan_cancel(priv);
b481de9c
ZY		 1319}
1320
1321#define MAX_UCODE_BEACON_INTERVAL 4096
1322#define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
1323
bb8c093b 1324static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
b481de9c
ZY		 1325{
1326 u16 new_val = 0;
1327 u16 beacon_factor = 0;
1328
1329 beacon_factor =
1330 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
1331 / MAX_UCODE_BEACON_INTERVAL;
1332 new_val = beacon_val / beacon_factor;
1333
1334 return cpu_to_le16(new_val);
1335}
1336
c79dd5b5 1337static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
b481de9c
ZY		 1338{
1339 u64 interval_tm_unit;
1340 u64 tsf, result;
1341 unsigned long flags;
1342 struct ieee80211_conf *conf = NULL;
1343 u16 beacon_int = 0;
1344
1345 conf = ieee80211_get_hw_conf(priv->hw);
1346
1347 spin_lock_irqsave(&priv->lock, flags);
3109ece1
TW		 1348 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
1349 priv->rxon_timing.timestamp.dw[0] =
1350 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
b481de9c
ZY		 1351
1352 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1353
3109ece1 1354 tsf = priv->timestamp;
b481de9c
ZY		 1355
1356 beacon_int = priv->beacon_int;
1357 spin_unlock_irqrestore(&priv->lock, flags);
1358
1359 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
1360 if (beacon_int == 0) {
1361 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1362 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1363 } else {
1364 priv->rxon_timing.beacon_interval =
1365 cpu_to_le16(beacon_int);
1366 priv->rxon_timing.beacon_interval =
bb8c093b 1367 iwl4965_adjust_beacon_interval(
b481de9c
ZY		 1368 le16_to_cpu(priv->rxon_timing.beacon_interval));
1369 }
1370
1371 priv->rxon_timing.atim_window = 0;
1372 } else {
1373 priv->rxon_timing.beacon_interval =
bb8c093b 1374 iwl4965_adjust_beacon_interval(conf->beacon_int);
b481de9c
ZY		 1375 /* TODO: we need to get atim_window from upper stack
1376 * for now we set to 0 */
1377 priv->rxon_timing.atim_window = 0;
1378 }
1379
1380 interval_tm_unit =
1381 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
1382 result = do_div(tsf, interval_tm_unit);
1383 priv->rxon_timing.beacon_init_val =
1384 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
1385
1386 IWL_DEBUG_ASSOC
1387 ("beacon interval %d beacon timer %d beacon tim %d\n",
1388 le16_to_cpu(priv->rxon_timing.beacon_interval),
1389 le32_to_cpu(priv->rxon_timing.beacon_init_val),
1390 le16_to_cpu(priv->rxon_timing.atim_window));
1391}
1392
c79dd5b5 1393static int iwl4965_scan_initiate(struct iwl_priv *priv)
b481de9c
ZY		 1394{
1395 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1396 IWL_ERROR("APs don't scan.\n");
1397 return 0;
1398 }
1399
fee1247a 1400 if (!iwl_is_ready_rf(priv)) {
b481de9c
ZY		 1401 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1402 return -EIO;
1403 }
1404
1405 if (test_bit(STATUS_SCANNING, &priv->status)) {
1406 IWL_DEBUG_SCAN("Scan already in progress.\n");
1407 return -EAGAIN;
1408 }
1409
1410 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1411 IWL_DEBUG_SCAN("Scan request while abort pending. "
1412 "Queuing.\n");
1413 return -EAGAIN;
1414 }
1415
1416 IWL_DEBUG_INFO("Starting scan...\n");
1417 priv->scan_bands = 2;
1418 set_bit(STATUS_SCANNING, &priv->status);
1419 priv->scan_start = jiffies;
1420 priv->scan_pass_start = priv->scan_start;
1421
1422 queue_work(priv->workqueue, &priv->request_scan);
1423
1424 return 0;
1425}
1426
b481de9c 1427
c79dd5b5 1428static void iwl4965_set_flags_for_phymode(struct iwl_priv *priv,
8318d78a 1429 enum ieee80211_band band)
b481de9c 1430{
8318d78a 1431 if (band == IEEE80211_BAND_5GHZ) {
b481de9c
ZY		 1432 priv->staging_rxon.flags &=
1433 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1434 | RXON_FLG_CCK_MSK);
1435 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1436 } else {
508e32e1 1437 /* Copied from iwl4965_post_associate() */
b481de9c
ZY		 1438 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1439 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1440 else
1441 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1442
1443 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
1444 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1445
1446 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1447 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1448 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1449 }
1450}
1451
1452/*
01ebd063 1453 * initialize rxon structure with default values from eeprom
b481de9c 1454 */
c79dd5b5 1455static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
b481de9c 1456{
bf85ea4f 1457 const struct iwl_channel_info *ch_info;
b481de9c
ZY		 1458
1459 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1460
1461 switch (priv->iw_mode) {
1462 case IEEE80211_IF_TYPE_AP:
1463 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1464 break;
1465
1466 case IEEE80211_IF_TYPE_STA:
1467 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1468 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1469 break;
1470
1471 case IEEE80211_IF_TYPE_IBSS:
1472 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1473 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1474 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1475 RXON_FILTER_ACCEPT_GRP_MSK;
1476 break;
1477
1478 case IEEE80211_IF_TYPE_MNTR:
1479 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
1480 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
1481 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
1482 break;
69dc5d9d
TW		 1483 default:
1484 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
1485 break;
b481de9c
ZY		 1486 }
1487
1488#if 0
1489 /* TODO: Figure out when short_preamble would be set and cache from
1490 * that */
1491 if (!hw_to_local(priv->hw)->short_preamble)
1492 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1493 else
1494 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1495#endif
1496
8622e705 1497 ch_info = iwl_get_channel_info(priv, priv->band,
b481de9c
ZY		 1498 le16_to_cpu(priv->staging_rxon.channel));
1499
1500 if (!ch_info)
1501 ch_info = &priv->channel_info[0];
1502
1503 /*
1504 * in some case A channels are all non IBSS
1505 * in this case force B/G channel
1506 */
1507 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
1508 !(is_channel_ibss(ch_info)))
1509 ch_info = &priv->channel_info[0];
1510
1511 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
8318d78a 1512 priv->band = ch_info->band;
b481de9c 1513
8318d78a 1514 iwl4965_set_flags_for_phymode(priv, priv->band);
b481de9c
ZY		 1515
1516 priv->staging_rxon.ofdm_basic_rates =
1517 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1518 priv->staging_rxon.cck_basic_rates =
1519 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1520
1521 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
1522 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
1523 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1524 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1525 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1526 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
c7de35cd 1527 iwl_set_rxon_chain(priv);
b481de9c
ZY		 1528}
1529
c79dd5b5 1530static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
b481de9c 1531{
b481de9c 1532 if (mode == IEEE80211_IF_TYPE_IBSS) {
bf85ea4f 1533 const struct iwl_channel_info *ch_info;
b481de9c 1534
8622e705 1535 ch_info = iwl_get_channel_info(priv,
8318d78a 1536 priv->band,
b481de9c
ZY		 1537 le16_to_cpu(priv->staging_rxon.channel));
1538
1539 if (!ch_info || !is_channel_ibss(ch_info)) {
1540 IWL_ERROR("channel %d not IBSS channel\n",
1541 le16_to_cpu(priv->staging_rxon.channel));
1542 return -EINVAL;
1543 }
1544 }
1545
b481de9c
ZY		 1546 priv->iw_mode = mode;
1547
bb8c093b 1548 iwl4965_connection_init_rx_config(priv);
b481de9c
ZY		 1549 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1550
bf85ea4f 1551 iwlcore_clear_stations_table(priv);
b481de9c 1552
fde3571f 1553 /* dont commit rxon if rf-kill is on*/
fee1247a 1554 if (!iwl_is_ready_rf(priv))
fde3571f
MA		 1555 return -EAGAIN;
1556
1557 cancel_delayed_work(&priv->scan_check);
1558 if (iwl4965_scan_cancel_timeout(priv, 100)) {
1559 IWL_WARNING("Aborted scan still in progress after 100ms\n");
1560 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
1561 return -EAGAIN;
1562 }
1563
bb8c093b 1564 iwl4965_commit_rxon(priv);
b481de9c
ZY		 1565
1566 return 0;
1567}
1568
c79dd5b5 1569static void iwl4965_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
b481de9c 1570 struct ieee80211_tx_control *ctl,
857485c0 1571 struct iwl_cmd *cmd,
b481de9c 1572 struct sk_buff *skb_frag,
deb09c43 1573 int sta_id)
b481de9c 1574{
6def9761 1575 struct iwl_hw_key *keyinfo = &priv->stations[sta_id].keyinfo;
6974e363
EG		 1576 struct iwl_wep_key *wepkey;
1577 int keyidx = 0;
1578
1c014420 1579 BUG_ON(ctl->hw_key->hw_key_idx > 3);
b481de9c
ZY		 1580
1581 switch (keyinfo->alg) {
1582 case ALG_CCMP:
1583 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
1584 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
8236e183
MS		 1585 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
1586 cmd->cmd.tx.tx_flags |= TX_CMD_FLG_AGG_CCMP_MSK;
b481de9c
ZY		 1587 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
1588 break;
1589
1590 case ALG_TKIP:
b481de9c 1591 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2bc75089
EG		 1592 ieee80211_get_tkip_key(keyinfo->conf, skb_frag,
1593 IEEE80211_TKIP_P2_KEY, cmd->cmd.tx.key);
1594 IWL_DEBUG_TX("tx_cmd with tkip hwcrypto\n");
b481de9c
ZY		 1595 break;
1596
1597 case ALG_WEP:
1c014420 1598 wepkey = &priv->wep_keys[ctl->hw_key->hw_key_idx];
6974e363
EG		 1599 cmd->cmd.tx.sec_ctl = 0;
1600 if (priv->default_wep_key) {
1601 /* the WEP key was sent as static */
1c014420 1602 keyidx = ctl->hw_key->hw_key_idx;
6974e363
EG		 1603 memcpy(&cmd->cmd.tx.key[3], wepkey->key,
1604 wepkey->key_size);
1605 if (wepkey->key_size == WEP_KEY_LEN_128)
1606 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
1607 } else {
0211ddda
EG		 1608 /* the WEP key was sent as dynamic */
1609 keyidx = keyinfo->keyidx;
1610 memcpy(&cmd->cmd.tx.key[3], keyinfo->key,
1611 keyinfo->keylen);
1612 if (keyinfo->keylen == WEP_KEY_LEN_128)
1613 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
6974e363 1614 }
b481de9c 1615
6974e363
EG		 1616 cmd->cmd.tx.sec_ctl |= (TX_CMD_SEC_WEP |
1617 (keyidx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT);
b481de9c
ZY		 1618
1619 IWL_DEBUG_TX("Configuring packet for WEP encryption "
6974e363 1620 "with key %d\n", keyidx);
b481de9c
ZY		 1621 break;
1622
b481de9c
ZY		 1623 default:
1624 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
1625 break;
1626 }
1627}
1628
1629/*
1630 * handle build REPLY_TX command notification.
1631 */
c79dd5b5 1632static void iwl4965_build_tx_cmd_basic(struct iwl_priv *priv,
857485c0 1633 struct iwl_cmd *cmd,
b481de9c
ZY		 1634 struct ieee80211_tx_control *ctrl,
1635 struct ieee80211_hdr *hdr,
1636 int is_unicast, u8 std_id)
1637{
1638 __le16 *qc;
1639 u16 fc = le16_to_cpu(hdr->frame_control);
1640 __le32 tx_flags = cmd->cmd.tx.tx_flags;
1641
1642 cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
1643 if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
1644 tx_flags |= TX_CMD_FLG_ACK_MSK;
1645 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
1646 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
1647 if (ieee80211_is_probe_response(fc) &&
1648 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
1649 tx_flags |= TX_CMD_FLG_TSF_MSK;
1650 } else {
1651 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
1652 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
1653 }
1654
87e4f7df
TW		 1655 if (ieee80211_is_back_request(fc))
1656 tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK;
1657
1658
b481de9c
ZY		 1659 cmd->cmd.tx.sta_id = std_id;
1660 if (ieee80211_get_morefrag(hdr))
1661 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
1662
1663 qc = ieee80211_get_qos_ctrl(hdr);
1664 if (qc) {
1665 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
1666 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
1667 } else
1668 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
1669
1670 if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
1671 tx_flags |= TX_CMD_FLG_RTS_MSK;
1672 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
1673 } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
1674 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
1675 tx_flags |= TX_CMD_FLG_CTS_MSK;
1676 }
1677
1678 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
1679 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
1680
1681 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
1682 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
1683 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
1684 (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
bc434dd2 1685 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
b481de9c 1686 else
bc434dd2 1687 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
ab53d8af 1688 } else {
b481de9c 1689 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
ab53d8af 1690 }
b481de9c
ZY		 1691
1692 cmd->cmd.tx.driver_txop = 0;
1693 cmd->cmd.tx.tx_flags = tx_flags;
1694 cmd->cmd.tx.next_frame_len = 0;
1695}
19758bef
TW		 1696static void iwl_update_tx_stats(struct iwl_priv *priv, u16 fc, u16 len)
1697{
1698 /* 0 - mgmt, 1 - cnt, 2 - data */
1699 int idx = (fc & IEEE80211_FCTL_FTYPE) >> 2;
1700 priv->tx_stats[idx].cnt++;
1701 priv->tx_stats[idx].bytes += len;
1702}
6440adb5
CB		 1703/**
1704 * iwl4965_get_sta_id - Find station's index within station table
1705 *
1706 * If new IBSS station, create new entry in station table
1707 */
c79dd5b5 1708static int iwl4965_get_sta_id(struct iwl_priv *priv,
9fbab516 1709 struct ieee80211_hdr *hdr)
b481de9c
ZY		 1710{
1711 int sta_id;
1712 u16 fc = le16_to_cpu(hdr->frame_control);
0795af57 1713 DECLARE_MAC_BUF(mac);
b481de9c 1714
6440adb5 1715 /* If this frame is broadcast or management, use broadcast station id */
b481de9c
ZY		 1716 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
1717 is_multicast_ether_addr(hdr->addr1))
5425e490 1718 return priv->hw_params.bcast_sta_id;
b481de9c
ZY		 1719
1720 switch (priv->iw_mode) {
1721
6440adb5
CB		 1722 /* If we are a client station in a BSS network, use the special
1723 * AP station entry (that's the only station we communicate with) */
b481de9c
ZY		 1724 case IEEE80211_IF_TYPE_STA:
1725 return IWL_AP_ID;
1726
1727 /* If we are an AP, then find the station, or use BCAST */
1728 case IEEE80211_IF_TYPE_AP:
947b13a7 1729 sta_id = iwl_find_station(priv, hdr->addr1);
b481de9c
ZY		 1730 if (sta_id != IWL_INVALID_STATION)
1731 return sta_id;
5425e490 1732 return priv->hw_params.bcast_sta_id;
b481de9c 1733
6440adb5
CB		 1734 /* If this frame is going out to an IBSS network, find the station,
1735 * or create a new station table entry */
b481de9c 1736 case IEEE80211_IF_TYPE_IBSS:
947b13a7 1737 sta_id = iwl_find_station(priv, hdr->addr1);
b481de9c
ZY		 1738 if (sta_id != IWL_INVALID_STATION)
1739 return sta_id;
1740
6440adb5 1741 /* Create new station table entry */
67d62035
RR		 1742 sta_id = iwl4965_add_station_flags(priv, hdr->addr1,
1743 0, CMD_ASYNC, NULL);
b481de9c
ZY		 1744
1745 if (sta_id != IWL_INVALID_STATION)
1746 return sta_id;
1747
0795af57 1748 IWL_DEBUG_DROP("Station %s not in station map. "
b481de9c 1749 "Defaulting to broadcast...\n",
0795af57 1750 print_mac(mac, hdr->addr1));
bf403db8 1751 iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
5425e490 1752 return priv->hw_params.bcast_sta_id;
b481de9c
ZY		 1753
1754 default:
01ebd063 1755 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
5425e490 1756 return priv->hw_params.bcast_sta_id;
b481de9c
ZY		 1757 }
1758}
1759
1760/*
1761 * start REPLY_TX command process
1762 */
c79dd5b5 1763static int iwl4965_tx_skb(struct iwl_priv *priv,
b481de9c
ZY		 1764 struct sk_buff *skb, struct ieee80211_tx_control *ctl)
1765{
1766 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1053d35f 1767 struct iwl_tfd_frame *tfd;
b481de9c
ZY		 1768 u32 *control_flags;
1769 int txq_id = ctl->queue;
bb8c093b
CH		 1770 struct iwl4965_tx_queue *txq = NULL;
1771 struct iwl4965_queue *q = NULL;
b481de9c
ZY		 1772 dma_addr_t phys_addr;
1773 dma_addr_t txcmd_phys;
87e4f7df 1774 dma_addr_t scratch_phys;
857485c0 1775 struct iwl_cmd *out_cmd = NULL;
b481de9c
ZY		 1776 u16 len, idx, len_org;
1777 u8 id, hdr_len, unicast;
1778 u8 sta_id;
1779 u16 seq_number = 0;
1780 u16 fc;
1781 __le16 *qc;
1782 u8 wait_write_ptr = 0;
1783 unsigned long flags;
1784 int rc;
1785
1786 spin_lock_irqsave(&priv->lock, flags);
fee1247a 1787 if (iwl_is_rfkill(priv)) {
b481de9c
ZY		 1788 IWL_DEBUG_DROP("Dropping - RF KILL\n");
1789 goto drop_unlock;
1790 }
1791
32bfd35d
JB		 1792 if (!priv->vif) {
1793 IWL_DEBUG_DROP("Dropping - !priv->vif\n");
b481de9c
ZY		 1794 goto drop_unlock;
1795 }
1796
8318d78a 1797 if ((ctl->tx_rate->hw_value & 0xFF) == IWL_INVALID_RATE) {
b481de9c
ZY		 1798 IWL_ERROR("ERROR: No TX rate available.\n");
1799 goto drop_unlock;
1800 }
1801
1802 unicast = !is_multicast_ether_addr(hdr->addr1);
1803 id = 0;
1804
1805 fc = le16_to_cpu(hdr->frame_control);
1806
0a6857e7 1807#ifdef CONFIG_IWLWIFI_DEBUG
b481de9c
ZY		 1808 if (ieee80211_is_auth(fc))
1809 IWL_DEBUG_TX("Sending AUTH frame\n");
1810 else if (ieee80211_is_assoc_request(fc))
1811 IWL_DEBUG_TX("Sending ASSOC frame\n");
1812 else if (ieee80211_is_reassoc_request(fc))
1813 IWL_DEBUG_TX("Sending REASSOC frame\n");
1814#endif
1815
7878a5a4 1816 /* drop all data frame if we are not associated */
76f3915b 1817 if (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
3109ece1 1818 (!iwl_is_associated(priv) ||
a6477249 1819 ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id) ||
76f3915b 1820 !priv->assoc_station_added)) {
3109ece1 1821 IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n");
b481de9c
ZY		 1822 goto drop_unlock;
1823 }
1824
1825 spin_unlock_irqrestore(&priv->lock, flags);
1826
1827 hdr_len = ieee80211_get_hdrlen(fc);
6440adb5
CB		 1828
1829 /* Find (or create) index into station table for destination station */
bb8c093b 1830 sta_id = iwl4965_get_sta_id(priv, hdr);
b481de9c 1831 if (sta_id == IWL_INVALID_STATION) {
0795af57
JP		 1832 DECLARE_MAC_BUF(mac);
1833
1834 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
1835 print_mac(mac, hdr->addr1));
b481de9c
ZY		 1836 goto drop;
1837 }
1838
07bc28ed 1839 IWL_DEBUG_TX("station Id %d\n", sta_id);
b481de9c
ZY		 1840
1841 qc = ieee80211_get_qos_ctrl(hdr);
1842 if (qc) {
1843 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
1844 seq_number = priv->stations[sta_id].tid[tid].seq_number &
1845 IEEE80211_SCTL_SEQ;
1846 hdr->seq_ctrl = cpu_to_le16(seq_number) |
1847 (hdr->seq_ctrl &
1848 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
1849 seq_number += 0x10;
c8b0e6e1 1850#ifdef CONFIG_IWL4965_HT
b481de9c 1851 /* aggregation is on for this <sta,tid> */
fe01b477 1852 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
b481de9c 1853 txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
fe01b477 1854 priv->stations[sta_id].tid[tid].tfds_in_queue++;
c8b0e6e1 1855#endif /* CONFIG_IWL4965_HT */
b481de9c 1856 }
6440adb5
CB		 1857
1858 /* Descriptor for chosen Tx queue */
b481de9c
ZY		 1859 txq = &priv->txq[txq_id];
1860 q = &txq->q;
1861
1862 spin_lock_irqsave(&priv->lock, flags);
1863
6440adb5 1864 /* Set up first empty TFD within this queue's circular TFD buffer */
fc4b6853 1865 tfd = &txq->bd[q->write_ptr];
b481de9c
ZY		 1866 memset(tfd, 0, sizeof(*tfd));
1867 control_flags = (u32 *) tfd;
fc4b6853 1868 idx = get_cmd_index(q, q->write_ptr, 0);
b481de9c 1869
6440adb5 1870 /* Set up driver data for this TFD */
bb8c093b 1871 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info));
fc4b6853
TW		 1872 txq->txb[q->write_ptr].skb[0] = skb;
1873 memcpy(&(txq->txb[q->write_ptr].status.control),
b481de9c 1874 ctl, sizeof(struct ieee80211_tx_control));
6440adb5
CB		 1875
1876 /* Set up first empty entry in queue's array of Tx/cmd buffers */
b481de9c
ZY		 1877 out_cmd = &txq->cmd[idx];
1878 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
1879 memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
6440adb5
CB		 1880
1881 /*
1882 * Set up the Tx-command (not MAC!) header.
1883 * Store the chosen Tx queue and TFD index within the sequence field;
1884 * after Tx, uCode's Tx response will return this value so driver can
1885 * locate the frame within the tx queue and do post-tx processing.
1886 */
b481de9c
ZY		 1887 out_cmd->hdr.cmd = REPLY_TX;
1888 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
fc4b6853 1889 INDEX_TO_SEQ(q->write_ptr)));
6440adb5
CB		 1890
1891 /* Copy MAC header from skb into command buffer */
b481de9c
ZY		 1892 memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
1893
6440adb5
CB		 1894 /*
1895 * Use the first empty entry in this queue's command buffer array
1896 * to contain the Tx command and MAC header concatenated together
1897 * (payload data will be in another buffer).
1898 * Size of this varies, due to varying MAC header length.
1899 * If end is not dword aligned, we'll have 2 extra bytes at the end
1900 * of the MAC header (device reads on dword boundaries).
1901 * We'll tell device about this padding later.
1902 */
5425e490 1903 len = priv->hw_params.tx_cmd_len +
857485c0 1904 sizeof(struct iwl_cmd_header) + hdr_len;
b481de9c
ZY		 1905
1906 len_org = len;
1907 len = (len + 3) & ~3;
1908
1909 if (len_org != len)
1910 len_org = 1;
1911 else
1912 len_org = 0;
1913
6440adb5
CB		 1914 /* Physical address of this Tx command's header (not MAC header!),
1915 * within command buffer array. */
857485c0
TW		 1916 txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl_cmd) * idx +
1917 offsetof(struct iwl_cmd, hdr);
b481de9c 1918
6440adb5
CB		 1919 /* Add buffer containing Tx command and MAC(!) header to TFD's
1920 * first entry */
bb8c093b 1921 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
b481de9c
ZY		 1922
1923 if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
deb09c43 1924 iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, sta_id);
b481de9c 1925
6440adb5
CB		 1926 /* Set up TFD's 2nd entry to point directly to remainder of skb,
1927 * if any (802.11 null frames have no payload). */
b481de9c
ZY		 1928 len = skb->len - hdr_len;
1929 if (len) {
1930 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
1931 len, PCI_DMA_TODEVICE);
bb8c093b 1932 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
b481de9c
ZY		 1933 }
1934
6440adb5 1935 /* Tell 4965 about any 2-byte padding after MAC header */
b481de9c
ZY		 1936 if (len_org)
1937 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
1938
6440adb5 1939 /* Total # bytes to be transmitted */
b481de9c
ZY		 1940 len = (u16)skb->len;
1941 out_cmd->cmd.tx.len = cpu_to_le16(len);
1942
1943 /* TODO need this for burst mode later on */
bb8c093b 1944 iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
b481de9c
ZY		 1945
1946 /* set is_hcca to 0; it probably will never be implemented */
bb8c093b 1947 iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
b481de9c 1948
19758bef
TW		 1949 iwl_update_tx_stats(priv, fc, len);
1950
857485c0 1951 scratch_phys = txcmd_phys + sizeof(struct iwl_cmd_header) +
87e4f7df
TW		 1952 offsetof(struct iwl4965_tx_cmd, scratch);
1953 out_cmd->cmd.tx.dram_lsb_ptr = cpu_to_le32(scratch_phys);
1954 out_cmd->cmd.tx.dram_msb_ptr = iwl_get_dma_hi_address(scratch_phys);
1955
b481de9c
ZY		 1956 if (!ieee80211_get_morefrag(hdr)) {
1957 txq->need_update = 1;
1958 if (qc) {
1959 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
1960 priv->stations[sta_id].tid[tid].seq_number = seq_number;
1961 }
1962 } else {
1963 wait_write_ptr = 1;
1964 txq->need_update = 0;
1965 }
1966
bf403db8 1967 iwl_print_hex_dump(priv, IWL_DL_TX, out_cmd->cmd.payload,
b481de9c
ZY		 1968 sizeof(out_cmd->cmd.tx));
1969
bf403db8 1970 iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
b481de9c
ZY		 1971 ieee80211_get_hdrlen(fc));
1972
6440adb5 1973 /* Set up entry for this TFD in Tx byte-count array */
e2a722eb 1974 priv->cfg->ops->lib->txq_update_byte_cnt_tbl(priv, txq, len);
b481de9c 1975
6440adb5 1976 /* Tell device the write index *just past* this latest filled TFD */
c54b679d 1977 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
bb8c093b 1978 rc = iwl4965_tx_queue_update_write_ptr(priv, txq);
b481de9c
ZY		 1979 spin_unlock_irqrestore(&priv->lock, flags);
1980
1981 if (rc)
1982 return rc;
1983
bb8c093b 1984 if ((iwl4965_queue_space(q) < q->high_mark)
b481de9c
ZY		 1985 && priv->mac80211_registered) {
1986 if (wait_write_ptr) {
1987 spin_lock_irqsave(&priv->lock, flags);
1988 txq->need_update = 1;
bb8c093b 1989 iwl4965_tx_queue_update_write_ptr(priv, txq);
b481de9c
ZY		 1990 spin_unlock_irqrestore(&priv->lock, flags);
1991 }
1992
1993 ieee80211_stop_queue(priv->hw, ctl->queue);
1994 }
1995
1996 return 0;
1997
1998drop_unlock:
1999 spin_unlock_irqrestore(&priv->lock, flags);
2000drop:
2001 return -1;
2002}
2003
c79dd5b5 2004static void iwl4965_set_rate(struct iwl_priv *priv)
b481de9c 2005{
8318d78a 2006 const struct ieee80211_supported_band *hw = NULL;
b481de9c
ZY		 2007 struct ieee80211_rate *rate;
2008 int i;
2009
d1141dfb 2010 hw = iwl_get_hw_mode(priv, priv->band);
c4ba9621
SA		 2011 if (!hw) {
2012 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2013 return;
2014 }
b481de9c
ZY		 2015
2016 priv->active_rate = 0;
2017 priv->active_rate_basic = 0;
2018
8318d78a
JB		 2019 for (i = 0; i < hw->n_bitrates; i++) {
2020 rate = &(hw->bitrates[i]);
2021 if (rate->hw_value < IWL_RATE_COUNT)
2022 priv->active_rate |= (1 << rate->hw_value);
b481de9c
ZY		 2023 }
2024
2025 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2026 priv->active_rate, priv->active_rate_basic);
2027
2028 /*
2029 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2030 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2031 * OFDM
2032 */
2033 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2034 priv->staging_rxon.cck_basic_rates =
2035 ((priv->active_rate_basic &
2036 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2037 else
2038 priv->staging_rxon.cck_basic_rates =
2039 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2040
2041 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2042 priv->staging_rxon.ofdm_basic_rates =
2043 ((priv->active_rate_basic &
2044 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2045 IWL_FIRST_OFDM_RATE) & 0xFF;
2046 else
2047 priv->staging_rxon.ofdm_basic_rates =
2048 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2049}
2050
ad97edd2 2051void iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
b481de9c
ZY		 2052{
2053 unsigned long flags;
2054
2055 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2056 return;
2057
2058 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2059 disable_radio ? "OFF" : "ON");
2060
2061 if (disable_radio) {
bb8c093b 2062 iwl4965_scan_cancel(priv);
b481de9c
ZY		 2063 /* FIXME: This is a workaround for AP */
2064 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
2065 spin_lock_irqsave(&priv->lock, flags);
3395f6e9 2066 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
b481de9c
ZY		 2067 CSR_UCODE_SW_BIT_RFKILL);
2068 spin_unlock_irqrestore(&priv->lock, flags);
ad97edd2 2069 /* call the host command only if no hw rf-kill set */
59003835
MA		 2070 if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
2071 iwl_is_ready(priv))
ad97edd2
MA		 2072 iwl4965_send_card_state(priv,
2073 CARD_STATE_CMD_DISABLE,
2074 0);
b481de9c 2075 set_bit(STATUS_RF_KILL_SW, &priv->status);
ad97edd2
MA		 2076
2077 /* make sure mac80211 stop sending Tx frame */
2078 if (priv->mac80211_registered)
2079 ieee80211_stop_queues(priv->hw);
b481de9c
ZY		 2080 }
2081 return;
2082 }
2083
2084 spin_lock_irqsave(&priv->lock, flags);
3395f6e9 2085 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
b481de9c
ZY		 2086
2087 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2088 spin_unlock_irqrestore(&priv->lock, flags);
2089
2090 /* wake up ucode */
2091 msleep(10);
2092
2093 spin_lock_irqsave(&priv->lock, flags);
3395f6e9
TW		 2094 iwl_read32(priv, CSR_UCODE_DRV_GP1);
2095 if (!iwl_grab_nic_access(priv))
2096 iwl_release_nic_access(priv);
b481de9c
ZY		 2097 spin_unlock_irqrestore(&priv->lock, flags);
2098
2099 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2100 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2101 "disabled by HW switch\n");
2102 return;
2103 }
2104
2105 queue_work(priv->workqueue, &priv->restart);
2106 return;
2107}
2108
b481de9c
ZY		 2109#define IWL_PACKET_RETRY_TIME HZ
2110
c79dd5b5 2111int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
b481de9c
ZY		 2112{
2113 u16 sc = le16_to_cpu(header->seq_ctrl);
2114 u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
2115 u16 frag = sc & IEEE80211_SCTL_FRAG;
2116 u16 *last_seq, *last_frag;
2117 unsigned long *last_time;
2118
2119 switch (priv->iw_mode) {
2120 case IEEE80211_IF_TYPE_IBSS:{
2121 struct list_head *p;
bb8c093b 2122 struct iwl4965_ibss_seq *entry = NULL;
b481de9c
ZY		 2123 u8 *mac = header->addr2;
2124 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
2125
2126 __list_for_each(p, &priv->ibss_mac_hash[index]) {
bb8c093b 2127 entry = list_entry(p, struct iwl4965_ibss_seq, list);
b481de9c
ZY		 2128 if (!compare_ether_addr(entry->mac, mac))
2129 break;
2130 }
2131 if (p == &priv->ibss_mac_hash[index]) {
2132 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
2133 if (!entry) {
bc434dd2 2134 IWL_ERROR("Cannot malloc new mac entry\n");
b481de9c
ZY		 2135 return 0;
2136 }
2137 memcpy(entry->mac, mac, ETH_ALEN);
2138 entry->seq_num = seq;
2139 entry->frag_num = frag;
2140 entry->packet_time = jiffies;
bc434dd2 2141 list_add(&entry->list, &priv->ibss_mac_hash[index]);
b481de9c
ZY		 2142 return 0;
2143 }
2144 last_seq = &entry->seq_num;
2145 last_frag = &entry->frag_num;
2146 last_time = &entry->packet_time;
2147 break;
2148 }
2149 case IEEE80211_IF_TYPE_STA:
2150 last_seq = &priv->last_seq_num;
2151 last_frag = &priv->last_frag_num;
2152 last_time = &priv->last_packet_time;
2153 break;
2154 default:
2155 return 0;
2156 }
2157 if ((*last_seq == seq) &&
2158 time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
2159 if (*last_frag == frag)
2160 goto drop;
2161 if (*last_frag + 1 != frag)
2162 /* out-of-order fragment */
2163 goto drop;
2164 } else
2165 *last_seq = seq;
2166
2167 *last_frag = frag;
2168 *last_time = jiffies;
2169 return 0;
2170
2171 drop:
2172 return 1;
2173}
2174
c8b0e6e1 2175#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
b481de9c
ZY		 2176
2177#include "iwl-spectrum.h"
2178
2179#define BEACON_TIME_MASK_LOW 0x00FFFFFF
2180#define BEACON_TIME_MASK_HIGH 0xFF000000
2181#define TIME_UNIT 1024
2182
2183/*
2184 * extended beacon time format
2185 * time in usec will be changed into a 32-bit value in 8:24 format
2186 * the high 1 byte is the beacon counts
2187 * the lower 3 bytes is the time in usec within one beacon interval
2188 */
2189
bb8c093b 2190static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
b481de9c
ZY		 2191{
2192 u32 quot;
2193 u32 rem;
2194 u32 interval = beacon_interval * 1024;
2195
2196 if (!interval || !usec)
2197 return 0;
2198
2199 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
2200 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
2201
2202 return (quot << 24) + rem;
2203}
2204
2205/* base is usually what we get from ucode with each received frame,
2206 * the same as HW timer counter counting down
2207 */
2208
bb8c093b 2209static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
b481de9c
ZY		 2210{
2211 u32 base_low = base & BEACON_TIME_MASK_LOW;
2212 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
2213 u32 interval = beacon_interval * TIME_UNIT;
2214 u32 res = (base & BEACON_TIME_MASK_HIGH) +
2215 (addon & BEACON_TIME_MASK_HIGH);
2216
2217 if (base_low > addon_low)
2218 res += base_low - addon_low;
2219 else if (base_low < addon_low) {
2220 res += interval + base_low - addon_low;
2221 res += (1 << 24);
2222 } else
2223 res += (1 << 24);
2224
2225 return cpu_to_le32(res);
2226}
2227
c79dd5b5 2228static int iwl4965_get_measurement(struct iwl_priv *priv,
b481de9c
ZY		 2229 struct ieee80211_measurement_params *params,
2230 u8 type)
2231{
bb8c093b 2232 struct iwl4965_spectrum_cmd spectrum;
db11d634 2233 struct iwl_rx_packet *res;
857485c0 2234 struct iwl_host_cmd cmd = {
b481de9c
ZY		 2235 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
2236 .data = (void *)&spectrum,
2237 .meta.flags = CMD_WANT_SKB,
2238 };
2239 u32 add_time = le64_to_cpu(params->start_time);
2240 int rc;
2241 int spectrum_resp_status;
2242 int duration = le16_to_cpu(params->duration);
2243
3109ece1 2244 if (iwl_is_associated(priv))
b481de9c 2245 add_time =
bb8c093b 2246 iwl4965_usecs_to_beacons(
b481de9c
ZY		 2247 le64_to_cpu(params->start_time) - priv->last_tsf,
2248 le16_to_cpu(priv->rxon_timing.beacon_interval));
2249
2250 memset(&spectrum, 0, sizeof(spectrum));
2251
2252 spectrum.channel_count = cpu_to_le16(1);
2253 spectrum.flags =
2254 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
2255 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
2256 cmd.len = sizeof(spectrum);
2257 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
2258
3109ece1 2259 if (iwl_is_associated(priv))
b481de9c 2260 spectrum.start_time =
bb8c093b 2261 iwl4965_add_beacon_time(priv->last_beacon_time,
b481de9c
ZY		 2262 add_time,
2263 le16_to_cpu(priv->rxon_timing.beacon_interval));
2264 else
2265 spectrum.start_time = 0;
2266
2267 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
2268 spectrum.channels[0].channel = params->channel;
2269 spectrum.channels[0].type = type;
2270 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
2271 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
2272 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
2273
857485c0 2274 rc = iwl_send_cmd_sync(priv, &cmd);
b481de9c
ZY		 2275 if (rc)
2276 return rc;
2277
db11d634 2278 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
b481de9c
ZY		 2279 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
2280 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
2281 rc = -EIO;
2282 }
2283
2284 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
2285 switch (spectrum_resp_status) {
2286 case 0: /* Command will be handled */
2287 if (res->u.spectrum.id != 0xff) {
2288 IWL_DEBUG_INFO
2289 ("Replaced existing measurement: %d\n",
2290 res->u.spectrum.id);
2291 priv->measurement_status &= ~MEASUREMENT_READY;
2292 }
2293 priv->measurement_status |= MEASUREMENT_ACTIVE;
2294 rc = 0;
2295 break;
2296
2297 case 1: /* Command will not be handled */
2298 rc = -EAGAIN;
2299 break;
2300 }
2301
2302 dev_kfree_skb_any(cmd.meta.u.skb);
2303
2304 return rc;
2305}
2306#endif
2307
c79dd5b5 2308static void iwl4965_txstatus_to_ieee(struct iwl_priv *priv,
bb8c093b 2309 struct iwl4965_tx_info *tx_sta)
b481de9c
ZY		 2310{
2311
2312 tx_sta->status.ack_signal = 0;
2313 tx_sta->status.excessive_retries = 0;
b481de9c
ZY		 2314
2315 if (in_interrupt())
2316 ieee80211_tx_status_irqsafe(priv->hw,
2317 tx_sta->skb[0], &(tx_sta->status));
2318 else
2319 ieee80211_tx_status(priv->hw,
2320 tx_sta->skb[0], &(tx_sta->status));
2321
2322 tx_sta->skb[0] = NULL;
2323}
2324
2325/**
6440adb5 2326 * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
b481de9c 2327 *
6440adb5
CB		 2328 * When FW advances 'R' index, all entries between old and new 'R' index
2329 * need to be reclaimed. As result, some free space forms. If there is
2330 * enough free space (> low mark), wake the stack that feeds us.
b481de9c 2331 */
c79dd5b5 2332int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
b481de9c 2333{
bb8c093b
CH		 2334 struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
2335 struct iwl4965_queue *q = &txq->q;
b481de9c
ZY		 2336 int nfreed = 0;
2337
2338 if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
2339 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
2340 "is out of range [0-%d] %d %d.\n", txq_id,
fc4b6853 2341 index, q->n_bd, q->write_ptr, q->read_ptr);
b481de9c
ZY		 2342 return 0;
2343 }
2344
c54b679d 2345 for (index = iwl_queue_inc_wrap(index, q->n_bd);
fc4b6853 2346 q->read_ptr != index;
c54b679d 2347 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
b481de9c 2348 if (txq_id != IWL_CMD_QUEUE_NUM) {
bb8c093b 2349 iwl4965_txstatus_to_ieee(priv,
fc4b6853 2350 &(txq->txb[txq->q.read_ptr]));
1053d35f 2351 iwl_hw_txq_free_tfd(priv, txq);
b481de9c
ZY		 2352 } else if (nfreed > 1) {
2353 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
fc4b6853 2354 q->write_ptr, q->read_ptr);
b481de9c
ZY		 2355 queue_work(priv->workqueue, &priv->restart);
2356 }
2357 nfreed++;
2358 }
2359
b481de9c
ZY		 2360 return nfreed;
2361}
2362
bb8c093b 2363static int iwl4965_is_tx_success(u32 status)
b481de9c
ZY		 2364{
2365 status &= TX_STATUS_MSK;
2366 return (status == TX_STATUS_SUCCESS)
2367 || (status == TX_STATUS_DIRECT_DONE);
2368}
2369
2370/******************************************************************************
2371 *
2372 * Generic RX handler implementations
2373 *
2374 ******************************************************************************/
c8b0e6e1 2375#ifdef CONFIG_IWL4965_HT
b481de9c 2376
c79dd5b5 2377static inline int iwl4965_get_ra_sta_id(struct iwl_priv *priv,
b481de9c
ZY		 2378 struct ieee80211_hdr *hdr)
2379{
2380 if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
2381 return IWL_AP_ID;
2382 else {
2383 u8 *da = ieee80211_get_DA(hdr);
947b13a7 2384 return iwl_find_station(priv, da);
b481de9c
ZY		 2385 }
2386}
2387
bb8c093b 2388static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
c79dd5b5 2389 struct iwl_priv *priv, int txq_id, int idx)
b481de9c
ZY		 2390{
2391 if (priv->txq[txq_id].txb[idx].skb[0])
2392 return (struct ieee80211_hdr *)priv->txq[txq_id].
2393 txb[idx].skb[0]->data;
2394 return NULL;
2395}
2396
bb8c093b 2397static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
b481de9c
ZY		 2398{
2399 __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
2400 tx_resp->frame_count);
2401 return le32_to_cpu(*scd_ssn) & MAX_SN;
2402
2403}
6440adb5
CB		 2404
2405/**
2406 * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
2407 */
c79dd5b5 2408static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
6def9761 2409 struct iwl_ht_agg *agg,
fe01b477 2410 struct iwl4965_tx_resp_agg *tx_resp,
b481de9c
ZY		 2411 u16 start_idx)
2412{
fe01b477
RR		 2413 u16 status;
2414 struct agg_tx_status *frame_status = &tx_resp->status;
b481de9c
ZY		 2415 struct ieee80211_tx_status *tx_status = NULL;
2416 struct ieee80211_hdr *hdr = NULL;
2417 int i, sh;
2418 int txq_id, idx;
2419 u16 seq;
2420
2421 if (agg->wait_for_ba)
6440adb5 2422 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
b481de9c
ZY		 2423
2424 agg->frame_count = tx_resp->frame_count;
2425 agg->start_idx = start_idx;
2426 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
fe01b477 2427 agg->bitmap = 0;
b481de9c 2428
6440adb5 2429 /* # frames attempted by Tx command */
b481de9c 2430 if (agg->frame_count == 1) {
6440adb5 2431 /* Only one frame was attempted; no block-ack will arrive */
fe01b477
RR		 2432 status = le16_to_cpu(frame_status[0].status);
2433 seq = le16_to_cpu(frame_status[0].sequence);
2434 idx = SEQ_TO_INDEX(seq);
2435 txq_id = SEQ_TO_QUEUE(seq);
b481de9c 2436
b481de9c 2437 /* FIXME: code repetition */
fe01b477
RR		 2438 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
2439 agg->frame_count, agg->start_idx, idx);
b481de9c 2440
fe01b477 2441 tx_status = &(priv->txq[txq_id].txb[idx].status);
b481de9c 2442 tx_status->retry_count = tx_resp->failure_frame;
fe01b477 2443 tx_status->control.flags &= ~IEEE80211_TXCTL_AMPDU;
bb8c093b 2444 tx_status->flags = iwl4965_is_tx_success(status)?
b481de9c 2445 IEEE80211_TX_STATUS_ACK : 0;
4c424e4c
RR		 2446 iwl4965_hwrate_to_tx_control(priv,
2447 le32_to_cpu(tx_resp->rate_n_flags),
2448 &tx_status->control);
b481de9c
ZY		 2449 /* FIXME: code repetition end */
2450
2451 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
2452 status & 0xff, tx_resp->failure_frame);
2453 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
bb8c093b 2454 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
b481de9c
ZY		 2455
2456 agg->wait_for_ba = 0;
2457 } else {
6440adb5 2458 /* Two or more frames were attempted; expect block-ack */
b481de9c
ZY		 2459 u64 bitmap = 0;
2460 int start = agg->start_idx;
2461
6440adb5 2462 /* Construct bit-map of pending frames within Tx window */
b481de9c
ZY		 2463 for (i = 0; i < agg->frame_count; i++) {
2464 u16 sc;
fe01b477
RR		 2465 status = le16_to_cpu(frame_status[i].status);
2466 seq = le16_to_cpu(frame_status[i].sequence);
b481de9c
ZY		 2467 idx = SEQ_TO_INDEX(seq);
2468 txq_id = SEQ_TO_QUEUE(seq);
2469
2470 if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
2471 AGG_TX_STATE_ABORT_MSK))
2472 continue;
2473
2474 IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
2475 agg->frame_count, txq_id, idx);
2476
bb8c093b 2477 hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
b481de9c
ZY		 2478
2479 sc = le16_to_cpu(hdr->seq_ctrl);
2480 if (idx != (SEQ_TO_SN(sc) & 0xff)) {
2481 IWL_ERROR("BUG_ON idx doesn't match seq control"
2482 " idx=%d, seq_idx=%d, seq=%d\n",
2483 idx, SEQ_TO_SN(sc),
2484 hdr->seq_ctrl);
2485 return -1;
2486 }
2487
2488 IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
2489 i, idx, SEQ_TO_SN(sc));
2490
2491 sh = idx - start;
2492 if (sh > 64) {
2493 sh = (start - idx) + 0xff;
2494 bitmap = bitmap << sh;
2495 sh = 0;
2496 start = idx;
2497 } else if (sh < -64)
2498 sh = 0xff - (start - idx);
2499 else if (sh < 0) {
2500 sh = start - idx;
2501 start = idx;
2502 bitmap = bitmap << sh;
2503 sh = 0;
2504 }
2505 bitmap |= (1 << sh);
2506 IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
2507 start, (u32)(bitmap & 0xFFFFFFFF));
2508 }
2509
fe01b477 2510 agg->bitmap = bitmap;
b481de9c
ZY		 2511 agg->start_idx = start;
2512 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
fe01b477 2513 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
b481de9c 2514 agg->frame_count, agg->start_idx,
06501d29 2515 (unsigned long long)agg->bitmap);
b481de9c
ZY		 2516
2517 if (bitmap)
2518 agg->wait_for_ba = 1;
2519 }
2520 return 0;
2521}
2522#endif
b481de9c 2523
6440adb5
CB		 2524/**
2525 * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
2526 */
c79dd5b5 2527static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
a55360e4 2528 struct iwl_rx_mem_buffer *rxb)
b481de9c 2529{
db11d634 2530 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
b481de9c
ZY		 2531 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
2532 int txq_id = SEQ_TO_QUEUE(sequence);
2533 int index = SEQ_TO_INDEX(sequence);
bb8c093b 2534 struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
b481de9c 2535 struct ieee80211_tx_status *tx_status;
bb8c093b 2536 struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
b481de9c 2537 u32 status = le32_to_cpu(tx_resp->status);
c8b0e6e1 2538#ifdef CONFIG_IWL4965_HT
fe01b477
RR		 2539 int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
2540 struct ieee80211_hdr *hdr;
2541 __le16 *qc;
b481de9c
ZY		 2542#endif
2543
2544 if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
2545 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
2546 "is out of range [0-%d] %d %d\n", txq_id,
fc4b6853
TW		 2547 index, txq->q.n_bd, txq->q.write_ptr,
2548 txq->q.read_ptr);
b481de9c
ZY		 2549 return;
2550 }
2551
c8b0e6e1 2552#ifdef CONFIG_IWL4965_HT
fe01b477
RR		 2553 hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
2554 qc = ieee80211_get_qos_ctrl(hdr);
2555
2556 if (qc)
2557 tid = le16_to_cpu(*qc) & 0xf;
2558
2559 sta_id = iwl4965_get_ra_sta_id(priv, hdr);
2560 if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
2561 IWL_ERROR("Station not known\n");
2562 return;
2563 }
2564
b481de9c 2565 if (txq->sched_retry) {
bb8c093b 2566 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
6def9761 2567 struct iwl_ht_agg *agg = NULL;
b481de9c 2568
fe01b477 2569 if (!qc)
b481de9c 2570 return;
b481de9c
ZY		 2571
2572 agg = &priv->stations[sta_id].tid[tid].agg;
2573
fe01b477
RR		 2574 iwl4965_tx_status_reply_tx(priv, agg,
2575 (struct iwl4965_tx_resp_agg *)tx_resp, index);
b481de9c
ZY		 2576
2577 if ((tx_resp->frame_count == 1) &&
bb8c093b 2578 !iwl4965_is_tx_success(status)) {
b481de9c
ZY		 2579 /* TODO: send BAR */
2580 }
2581
fe01b477 2582 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
0d0b2c1c 2583 int freed, ampdu_q;
c54b679d 2584 index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
b481de9c
ZY		 2585 IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
2586 "%d index %d\n", scd_ssn , index);
fe01b477
RR		 2587 freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
2588 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
2589
2590 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
2591 txq_id >= 0 && priv->mac80211_registered &&
0d0b2c1c
RR		 2592 agg->state != IWL_EMPTYING_HW_QUEUE_DELBA) {
2593 /* calculate mac80211 ampdu sw queue to wake */
2594 ampdu_q = txq_id - IWL_BACK_QUEUE_FIRST_ID +
2595 priv->hw->queues;
2596 if (agg->state == IWL_AGG_OFF)
2597 ieee80211_wake_queue(priv->hw, txq_id);
2598 else
2599 ieee80211_wake_queue(priv->hw, ampdu_q);
2600 }
fe01b477 2601 iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
b481de9c
ZY		 2602 }
2603 } else {
c8b0e6e1 2604#endif /* CONFIG_IWL4965_HT */
fc4b6853 2605 tx_status = &(txq->txb[txq->q.read_ptr].status);
b481de9c
ZY		 2606
2607 tx_status->retry_count = tx_resp->failure_frame;
b481de9c 2608 tx_status->flags =
bb8c093b 2609 iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
4c424e4c
RR		 2610 iwl4965_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags),
2611 &tx_status->control);
b481de9c 2612
b481de9c 2613 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
bb8c093b 2614 "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
b481de9c
ZY		 2615 status, le32_to_cpu(tx_resp->rate_n_flags),
2616 tx_resp->failure_frame);
2617
2618 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
47c5196e 2619#ifdef CONFIG_IWL4965_HT
fe01b477
RR		 2620 if (index != -1) {
2621 int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
fe01b477
RR		 2622 if (tid != MAX_TID_COUNT)
2623 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
2624 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
0d0b2c1c 2625 (txq_id >= 0) && priv->mac80211_registered)
fe01b477
RR		 2626 ieee80211_wake_queue(priv->hw, txq_id);
2627 if (tid != MAX_TID_COUNT)
2628 iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
fe01b477 2629 }
b481de9c 2630 }
c8b0e6e1 2631#endif /* CONFIG_IWL4965_HT */
b481de9c
ZY		 2632
2633 if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
2634 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
2635}
2636
2637
c79dd5b5 2638static void iwl4965_rx_reply_alive(struct iwl_priv *priv,
a55360e4 2639 struct iwl_rx_mem_buffer *rxb)
b481de9c 2640{
db11d634 2641 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
bb8c093b 2642 struct iwl4965_alive_resp *palive;
b481de9c
ZY		 2643 struct delayed_work *pwork;
2644
2645 palive = &pkt->u.alive_frame;
2646
2647 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
2648 "0x%01X 0x%01X\n",
2649 palive->is_valid, palive->ver_type,
2650 palive->ver_subtype);
2651
2652 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
2653 IWL_DEBUG_INFO("Initialization Alive received.\n");
2654 memcpy(&priv->card_alive_init,
2655 &pkt->u.alive_frame,
bb8c093b 2656 sizeof(struct iwl4965_init_alive_resp));
b481de9c
ZY		 2657 pwork = &priv->init_alive_start;
2658 } else {
2659 IWL_DEBUG_INFO("Runtime Alive received.\n");
2660 memcpy(&priv->card_alive, &pkt->u.alive_frame,
bb8c093b 2661 sizeof(struct iwl4965_alive_resp));
b481de9c
ZY		 2662 pwork = &priv->alive_start;
2663 }
2664
2665 /* We delay the ALIVE response by 5ms to
2666 * give the HW RF Kill time to activate... */
2667 if (palive->is_valid == UCODE_VALID_OK)
2668 queue_delayed_work(priv->workqueue, pwork,
2669 msecs_to_jiffies(5));
2670 else
2671 IWL_WARNING("uCode did not respond OK.\n");
2672}
2673
c79dd5b5 2674static void iwl4965_rx_reply_add_sta(struct iwl_priv *priv,
a55360e4 2675 struct iwl_rx_mem_buffer *rxb)
b481de9c 2676{
db11d634 2677 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
b481de9c
ZY		 2678
2679 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
2680 return;
2681}
2682
c79dd5b5 2683static void iwl4965_rx_reply_error(struct iwl_priv *priv,
a55360e4 2684 struct iwl_rx_mem_buffer *rxb)
b481de9c 2685{
db11d634 2686 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
b481de9c
ZY		 2687
2688 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
2689 "seq 0x%04X ser 0x%08X\n",
2690 le32_to_cpu(pkt->u.err_resp.error_type),
2691 get_cmd_string(pkt->u.err_resp.cmd_id),
2692 pkt->u.err_resp.cmd_id,
2693 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2694 le32_to_cpu(pkt->u.err_resp.error_info));
2695}
2696
2697#define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2698
a55360e4 2699static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
b481de9c 2700{
db11d634 2701 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
bb8c093b
CH		 2702 struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon;
2703 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
b481de9c
ZY		 2704 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
2705 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
2706 rxon->channel = csa->channel;
2707 priv->staging_rxon.channel = csa->channel;
2708}
2709
c79dd5b5 2710static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
a55360e4 2711 struct iwl_rx_mem_buffer *rxb)
b481de9c 2712{
c8b0e6e1 2713#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
db11d634 2714 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
bb8c093b 2715 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
b481de9c
ZY		 2716
2717 if (!report->state) {
2718 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
2719 "Spectrum Measure Notification: Start\n");
2720 return;
2721 }
2722
2723 memcpy(&priv->measure_report, report, sizeof(*report));
2724 priv->measurement_status |= MEASUREMENT_READY;
2725#endif
2726}
2727
c79dd5b5 2728static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
a55360e4 2729 struct iwl_rx_mem_buffer *rxb)
b481de9c 2730{
0a6857e7 2731#ifdef CONFIG_IWLWIFI_DEBUG
db11d634 2732 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
bb8c093b 2733 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
b481de9c
ZY		 2734 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
2735 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2736#endif
2737}
2738
c79dd5b5 2739static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
a55360e4 2740 struct iwl_rx_mem_buffer *rxb)
b481de9c 2741{
db11d634 2742 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
b481de9c
ZY		 2743 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
2744 "notification for %s:\n",
2745 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
bf403db8 2746 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
b481de9c
ZY		 2747}
2748
bb8c093b 2749static void iwl4965_bg_beacon_update(struct work_struct *work)
b481de9c 2750{
c79dd5b5
TW		 2751 struct iwl_priv *priv =
2752 container_of(work, struct iwl_priv, beacon_update);
b481de9c
ZY		 2753 struct sk_buff *beacon;
2754
2755 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
32bfd35d 2756 beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL);
b481de9c
ZY		 2757
2758 if (!beacon) {
2759 IWL_ERROR("update beacon failed\n");
2760 return;
2761 }
2762
2763 mutex_lock(&priv->mutex);
2764 /* new beacon skb is allocated every time; dispose previous.*/
2765 if (priv->ibss_beacon)
2766 dev_kfree_skb(priv->ibss_beacon);
2767
2768 priv->ibss_beacon = beacon;
2769 mutex_unlock(&priv->mutex);
2770
bb8c093b 2771 iwl4965_send_beacon_cmd(priv);
b481de9c
ZY		 2772}
2773
c79dd5b5 2774static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
a55360e4 2775 struct iwl_rx_mem_buffer *rxb)
b481de9c 2776{
0a6857e7 2777#ifdef CONFIG_IWLWIFI_DEBUG
db11d634 2778 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
bb8c093b
CH		 2779 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
2780 u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
b481de9c
ZY		 2781
2782 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
2783 "tsf %d %d rate %d\n",
2784 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
2785 beacon->beacon_notify_hdr.failure_frame,
2786 le32_to_cpu(beacon->ibss_mgr_status),
2787 le32_to_cpu(beacon->high_tsf),
2788 le32_to_cpu(beacon->low_tsf), rate);
2789#endif
2790
2791 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2792 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
2793 queue_work(priv->workqueue, &priv->beacon_update);
2794}
2795
2796/* Service response to REPLY_SCAN_CMD (0x80) */
c79dd5b5 2797static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
a55360e4 2798 struct iwl_rx_mem_buffer *rxb)
b481de9c 2799{
0a6857e7 2800#ifdef CONFIG_IWLWIFI_DEBUG
db11d634 2801 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
bb8c093b
CH		 2802 struct iwl4965_scanreq_notification *notif =
2803 (struct iwl4965_scanreq_notification *)pkt->u.raw;
b481de9c
ZY		 2804
2805 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
2806#endif
2807}
2808
2809/* Service SCAN_START_NOTIFICATION (0x82) */
c79dd5b5 2810static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
a55360e4 2811 struct iwl_rx_mem_buffer *rxb)
b481de9c 2812{
db11d634 2813 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
bb8c093b
CH		 2814 struct iwl4965_scanstart_notification *notif =
2815 (struct iwl4965_scanstart_notification *)pkt->u.raw;
b481de9c
ZY		 2816 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
2817 IWL_DEBUG_SCAN("Scan start: "
2818 "%d [802.11%s] "
2819 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
2820 notif->channel,
2821 notif->band ? "bg" : "a",
2822 notif->tsf_high,
2823 notif->tsf_low, notif->status, notif->beacon_timer);
2824}
2825
2826/* Service SCAN_RESULTS_NOTIFICATION (0x83) */
c79dd5b5 2827static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
a55360e4 2828 struct iwl_rx_mem_buffer *rxb)
b481de9c 2829{
db11d634 2830 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
bb8c093b
CH		 2831 struct iwl4965_scanresults_notification *notif =
2832 (struct iwl4965_scanresults_notification *)pkt->u.raw;
b481de9c
ZY		 2833
2834 IWL_DEBUG_SCAN("Scan ch.res: "
2835 "%d [802.11%s] "
2836 "(TSF: 0x%08X:%08X) - %d "
2837 "elapsed=%lu usec (%dms since last)\n",
2838 notif->channel,
2839 notif->band ? "bg" : "a",
2840 le32_to_cpu(notif->tsf_high),
2841 le32_to_cpu(notif->tsf_low),
2842 le32_to_cpu(notif->statistics[0]),
2843 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
2844 jiffies_to_msecs(elapsed_jiffies
2845 (priv->last_scan_jiffies, jiffies)));
2846
2847 priv->last_scan_jiffies = jiffies;
7878a5a4 2848 priv->next_scan_jiffies = 0;
b481de9c
ZY		 2849}
2850
2851/* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
c79dd5b5 2852static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
a55360e4 2853 struct iwl_rx_mem_buffer *rxb)
b481de9c 2854{
db11d634 2855 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
bb8c093b 2856 struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
b481de9c
ZY		 2857
2858 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
2859 scan_notif->scanned_channels,
2860 scan_notif->tsf_low,
2861 scan_notif->tsf_high, scan_notif->status);
2862
2863 /* The HW is no longer scanning */
2864 clear_bit(STATUS_SCAN_HW, &priv->status);
2865
2866 /* The scan completion notification came in, so kill that timer... */
2867 cancel_delayed_work(&priv->scan_check);
2868
2869 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
2870 (priv->scan_bands == 2) ? "2.4" : "5.2",
2871 jiffies_to_msecs(elapsed_jiffies
2872 (priv->scan_pass_start, jiffies)));
2873
2874 /* Remove this scanned band from the list
2875 * of pending bands to scan */
2876 priv->scan_bands--;
2877
2878 /* If a request to abort was given, or the scan did not succeed
2879 * then we reset the scan state machine and terminate,
2880 * re-queuing another scan if one has been requested */
2881 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2882 IWL_DEBUG_INFO("Aborted scan completed.\n");
2883 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
2884 } else {
2885 /* If there are more bands on this scan pass reschedule */
2886 if (priv->scan_bands > 0)
2887 goto reschedule;
2888 }
2889
2890 priv->last_scan_jiffies = jiffies;
7878a5a4 2891 priv->next_scan_jiffies = 0;
b481de9c
ZY		 2892 IWL_DEBUG_INFO("Setting scan to off\n");
2893
2894 clear_bit(STATUS_SCANNING, &priv->status);
2895
2896 IWL_DEBUG_INFO("Scan took %dms\n",
2897 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
2898
2899 queue_work(priv->workqueue, &priv->scan_completed);
2900
2901 return;
2902
2903reschedule:
2904 priv->scan_pass_start = jiffies;
2905 queue_work(priv->workqueue, &priv->request_scan);
2906}
2907
2908/* Handle notification from uCode that card's power state is changing
2909 * due to software, hardware, or critical temperature RFKILL */
c79dd5b5 2910static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
a55360e4 2911 struct iwl_rx_mem_buffer *rxb)
b481de9c 2912{
db11d634 2913 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
b481de9c
ZY		 2914 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
2915 unsigned long status = priv->status;
2916
2917 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
2918 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
2919 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
2920
2921 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
2922 RF_CARD_DISABLED)) {
2923
3395f6e9 2924 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
b481de9c
ZY		 2925 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2926
3395f6e9
TW		 2927 if (!iwl_grab_nic_access(priv)) {
2928 iwl_write_direct32(
b481de9c
ZY		 2929 priv, HBUS_TARG_MBX_C,
2930 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
2931
3395f6e9 2932 iwl_release_nic_access(priv);
b481de9c
ZY		 2933 }
2934
2935 if (!(flags & RXON_CARD_DISABLED)) {
3395f6e9 2936 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
b481de9c 2937 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3395f6e9
TW		 2938 if (!iwl_grab_nic_access(priv)) {
2939 iwl_write_direct32(
b481de9c
ZY		 2940 priv, HBUS_TARG_MBX_C,
2941 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
2942
3395f6e9 2943 iwl_release_nic_access(priv);
b481de9c
ZY		 2944 }
2945 }
2946
2947 if (flags & RF_CARD_DISABLED) {
3395f6e9 2948 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
b481de9c 2949 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
3395f6e9
TW		 2950 iwl_read32(priv, CSR_UCODE_DRV_GP1);
2951 if (!iwl_grab_nic_access(priv))
2952 iwl_release_nic_access(priv);
b481de9c
ZY		 2953 }
2954 }
2955
2956 if (flags & HW_CARD_DISABLED)
2957 set_bit(STATUS_RF_KILL_HW, &priv->status);
2958 else
2959 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2960
2961
2962 if (flags & SW_CARD_DISABLED)
2963 set_bit(STATUS_RF_KILL_SW, &priv->status);
2964 else
2965 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2966
2967 if (!(flags & RXON_CARD_DISABLED))
bb8c093b 2968 iwl4965_scan_cancel(priv);
b481de9c
ZY		 2969
2970 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
2971 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
2972 (test_bit(STATUS_RF_KILL_SW, &status) !=
2973 test_bit(STATUS_RF_KILL_SW, &priv->status)))
2974 queue_work(priv->workqueue, &priv->rf_kill);
2975 else
2976 wake_up_interruptible(&priv->wait_command_queue);
2977}
2978
2979/**
bb8c093b 2980 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
b481de9c
ZY		 2981 *
2982 * Setup the RX handlers for each of the reply types sent from the uCode
2983 * to the host.
2984 *
2985 * This function chains into the hardware specific files for them to setup
2986 * any hardware specific handlers as well.
2987 */
c79dd5b5 2988static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
b481de9c 2989{
bb8c093b
CH		 2990 priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
2991 priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
2992 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
2993 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
b481de9c 2994 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
bb8c093b
CH		 2995 iwl4965_rx_spectrum_measure_notif;
2996 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
b481de9c 2997 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
bb8c093b
CH		 2998 iwl4965_rx_pm_debug_statistics_notif;
2999 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
b481de9c 3000
9fbab516
BC		 3001 /*
3002 * The same handler is used for both the REPLY to a discrete
3003 * statistics request from the host as well as for the periodic
3004 * statistics notifications (after received beacons) from the uCode.
b481de9c 3005 */
bb8c093b
CH		 3006 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
3007 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
b481de9c 3008
bb8c093b
CH		 3009 priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
3010 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
b481de9c 3011 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
bb8c093b 3012 iwl4965_rx_scan_results_notif;
b481de9c 3013 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
bb8c093b
CH		 3014 iwl4965_rx_scan_complete_notif;
3015 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
3016 priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
b481de9c 3017
9fbab516 3018 /* Set up hardware specific Rx handlers */
d4789efe 3019 priv->cfg->ops->lib->rx_handler_setup(priv);
b481de9c
ZY		 3020}
3021
3022/**
bb8c093b 3023 * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
b481de9c
ZY		 3024 * @rxb: Rx buffer to reclaim
3025 *
3026 * If an Rx buffer has an async callback associated with it the callback
3027 * will be executed. The attached skb (if present) will only be freed
3028 * if the callback returns 1
3029 */
c79dd5b5 3030static void iwl4965_tx_cmd_complete(struct iwl_priv *priv,
a55360e4 3031 struct iwl_rx_mem_buffer *rxb)
b481de9c 3032{
db11d634 3033 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
b481de9c
ZY		 3034 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3035 int txq_id = SEQ_TO_QUEUE(sequence);
3036 int index = SEQ_TO_INDEX(sequence);
3037 int huge = sequence & SEQ_HUGE_FRAME;
3038 int cmd_index;
857485c0 3039 struct iwl_cmd *cmd;
b481de9c
ZY		 3040
3041 /* If a Tx command is being handled and it isn't in the actual
3042 * command queue then there a command routing bug has been introduced
3043 * in the queue management code. */
3044 if (txq_id != IWL_CMD_QUEUE_NUM)
3045 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
3046 txq_id, pkt->hdr.cmd);
3047 BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3048
3049 cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
3050 cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3051
3052 /* Input error checking is done when commands are added to queue. */
3053 if (cmd->meta.flags & CMD_WANT_SKB) {
3054 cmd->meta.source->u.skb = rxb->skb;
3055 rxb->skb = NULL;
3056 } else if (cmd->meta.u.callback &&
3057 !cmd->meta.u.callback(priv, cmd, rxb->skb))
3058 rxb->skb = NULL;
3059
bb8c093b 3060 iwl4965_tx_queue_reclaim(priv, txq_id, index);
b481de9c
ZY		 3061
3062 if (!(cmd->meta.flags & CMD_ASYNC)) {
3063 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3064 wake_up_interruptible(&priv->wait_command_queue);
3065 }
3066}
3067
5c0eef96
MA		 3068/*
3069 * this should be called while priv->lock is locked
3070*/
a55360e4 3071static void __iwl_rx_replenish(struct iwl_priv *priv)
b481de9c 3072{
a55360e4
TW		 3073 iwl_rx_allocate(priv);
3074 iwl_rx_queue_restock(priv);
b481de9c
ZY		 3075}
3076
b481de9c
ZY		 3077
3078/**
a55360e4 3079 * iwl_rx_handle - Main entry function for receiving responses from uCode
b481de9c
ZY		 3080 *
3081 * Uses the priv->rx_handlers callback function array to invoke
3082 * the appropriate handlers, including command responses,
3083 * frame-received notifications, and other notifications.
3084 */
a55360e4 3085void iwl_rx_handle(struct iwl_priv *priv)
b481de9c 3086{
a55360e4 3087 struct iwl_rx_mem_buffer *rxb;
db11d634 3088 struct iwl_rx_packet *pkt;
a55360e4 3089 struct iwl_rx_queue *rxq = &priv->rxq;
b481de9c
ZY		 3090 u32 r, i;
3091 int reclaim;
3092 unsigned long flags;
5c0eef96 3093 u8 fill_rx = 0;
d68ab680 3094 u32 count = 8;
b481de9c 3095
6440adb5
CB		 3096 /* uCode's read index (stored in shared DRAM) indicates the last Rx
3097 * buffer that the driver may process (last buffer filled by ucode). */
bb8c093b 3098 r = iwl4965_hw_get_rx_read(priv);
b481de9c
ZY		 3099 i = rxq->read;
3100
3101 /* Rx interrupt, but nothing sent from uCode */
3102 if (i == r)
3103 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
3104
a55360e4 3105 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
5c0eef96
MA		 3106 fill_rx = 1;
3107
b481de9c
ZY		 3108 while (i != r) {
3109 rxb = rxq->queue[i];
3110
9fbab516 3111 /* If an RXB doesn't have a Rx queue slot associated with it,
b481de9c
ZY		 3112 * then a bug has been introduced in the queue refilling
3113 * routines -- catch it here */
3114 BUG_ON(rxb == NULL);
3115
3116 rxq->queue[i] = NULL;
3117
3118 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
5425e490 3119 priv->hw_params.rx_buf_size,
b481de9c 3120 PCI_DMA_FROMDEVICE);
db11d634 3121 pkt = (struct iwl_rx_packet *)rxb->skb->data;
b481de9c
ZY		 3122
3123 /* Reclaim a command buffer only if this packet is a response
3124 * to a (driver-originated) command.
3125 * If the packet (e.g. Rx frame) originated from uCode,
3126 * there is no command buffer to reclaim.
3127 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
3128 * but apparently a few don't get set; catch them here. */
3129 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
3130 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
857485c0 3131 (pkt->hdr.cmd != REPLY_RX) &&
cfe01709 3132 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
b481de9c
ZY		 3133 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
3134 (pkt->hdr.cmd != REPLY_TX);
3135
3136 /* Based on type of command response or notification,
3137 * handle those that need handling via function in
bb8c093b 3138 * rx_handlers table. See iwl4965_setup_rx_handlers() */
b481de9c
ZY		 3139 if (priv->rx_handlers[pkt->hdr.cmd]) {
3140 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
3141 "r = %d, i = %d, %s, 0x%02x\n", r, i,
3142 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
3143 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
3144 } else {
3145 /* No handling needed */
3146 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
3147 "r %d i %d No handler needed for %s, 0x%02x\n",
3148 r, i, get_cmd_string(pkt->hdr.cmd),
3149 pkt->hdr.cmd);
3150 }
3151
3152 if (reclaim) {
9fbab516 3153 /* Invoke any callbacks, transfer the skb to caller, and
857485c0 3154 * fire off the (possibly) blocking iwl_send_cmd()
b481de9c
ZY		 3155 * as we reclaim the driver command queue */
3156 if (rxb && rxb->skb)
bb8c093b 3157 iwl4965_tx_cmd_complete(priv, rxb);
b481de9c
ZY		 3158 else
3159 IWL_WARNING("Claim null rxb?\n");
3160 }
3161
3162 /* For now we just don't re-use anything. We can tweak this
3163 * later to try and re-use notification packets and SKBs that
3164 * fail to Rx correctly */
3165 if (rxb->skb != NULL) {
3166 priv->alloc_rxb_skb--;
3167 dev_kfree_skb_any(rxb->skb);
3168 rxb->skb = NULL;
3169 }
3170
3171 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
5425e490 3172 priv->hw_params.rx_buf_size,
9ee1ba47 3173 PCI_DMA_FROMDEVICE);
b481de9c
ZY		 3174 spin_lock_irqsave(&rxq->lock, flags);
3175 list_add_tail(&rxb->list, &priv->rxq.rx_used);
3176 spin_unlock_irqrestore(&rxq->lock, flags);
3177 i = (i + 1) & RX_QUEUE_MASK;
5c0eef96
MA		 3178 /* If there are a lot of unused frames,
3179 * restock the Rx queue so ucode wont assert. */
3180 if (fill_rx) {
3181 count++;
3182 if (count >= 8) {
3183 priv->rxq.read = i;
a55360e4 3184 __iwl_rx_replenish(priv);
5c0eef96
MA		 3185 count = 0;
3186 }
3187 }
b481de9c
ZY		 3188 }
3189
3190 /* Backtrack one entry */
3191 priv->rxq.read = i;
a55360e4
TW		 3192 iwl_rx_queue_restock(priv);
3193}
3194/* Convert linear signal-to-noise ratio into dB */
3195static u8 ratio2dB[100] = {
3196/* 0 1 2 3 4 5 6 7 8 9 */
3197 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
3198 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
3199 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
3200 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
3201 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
3202 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
3203 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
3204 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
3205 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
3206 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
3207};
3208
3209/* Calculates a relative dB value from a ratio of linear
3210 * (i.e. not dB) signal levels.
3211 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
3212int iwl4965_calc_db_from_ratio(int sig_ratio)
3213{
3214 /* 1000:1 or higher just report as 60 dB */
3215 if (sig_ratio >= 1000)
3216 return 60;
3217
3218 /* 100:1 or higher, divide by 10 and use table,
3219 * add 20 dB to make up for divide by 10 */
3220 if (sig_ratio >= 100)
3221 return (20 + (int)ratio2dB[sig_ratio/10]);
3222
3223 /* We shouldn't see this */
3224 if (sig_ratio < 1)
3225 return 0;
3226
3227 /* Use table for ratios 1:1 - 99:1 */
3228 return (int)ratio2dB[sig_ratio];
3229}
3230
3231#define PERFECT_RSSI (-20) /* dBm */
3232#define WORST_RSSI (-95) /* dBm */
3233#define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
3234
3235/* Calculate an indication of rx signal quality (a percentage, not dBm!).
3236 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
3237 * about formulas used below. */
3238int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
3239{
3240 int sig_qual;
3241 int degradation = PERFECT_RSSI - rssi_dbm;
3242
3243 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
3244 * as indicator; formula is (signal dbm - noise dbm).
3245 * SNR at or above 40 is a great signal (100%).
3246 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
3247 * Weakest usable signal is usually 10 - 15 dB SNR. */
3248 if (noise_dbm) {
3249 if (rssi_dbm - noise_dbm >= 40)
3250 return 100;
3251 else if (rssi_dbm < noise_dbm)
3252 return 0;
3253 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
3254
3255 /* Else use just the signal level.
3256 * This formula is a least squares fit of data points collected and
3257 * compared with a reference system that had a percentage (%) display
3258 * for signal quality. */
3259 } else
3260 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
3261 (15 * RSSI_RANGE + 62 * degradation)) /
3262 (RSSI_RANGE * RSSI_RANGE);
3263
3264 if (sig_qual > 100)
3265 sig_qual = 100;
3266 else if (sig_qual < 1)
3267 sig_qual = 0;
3268
3269 return sig_qual;
b481de9c
ZY		 3270}
3271
6440adb5
CB		 3272/**
3273 * iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
3274 */
c79dd5b5 3275static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv,
bb8c093b 3276 struct iwl4965_tx_queue *txq)
b481de9c
ZY		 3277{
3278 u32 reg = 0;
3279 int rc = 0;
3280 int txq_id = txq->q.id;
3281
3282 if (txq->need_update == 0)
3283 return rc;
3284
3285 /* if we're trying to save power */
3286 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3287 /* wake up nic if it's powered down ...
3288 * uCode will wake up, and interrupt us again, so next
3289 * time we'll skip this part. */
3395f6e9 3290 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
b481de9c
ZY		 3291
3292 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3293 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
3395f6e9 3294 iwl_set_bit(priv, CSR_GP_CNTRL,
b481de9c
ZY		 3295 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3296 return rc;
3297 }
3298
3299 /* restore this queue's parameters in nic hardware. */
3395f6e9 3300 rc = iwl_grab_nic_access(priv);
b481de9c
ZY		 3301 if (rc)
3302 return rc;
3395f6e9 3303 iwl_write_direct32(priv, HBUS_TARG_WRPTR,
fc4b6853 3304 txq->q.write_ptr | (txq_id << 8));
3395f6e9 3305 iwl_release_nic_access(priv);
b481de9c
ZY		 3306
3307 /* else not in power-save mode, uCode will never sleep when we're
3308 * trying to tx (during RFKILL, we're not trying to tx). */
3309 } else
3395f6e9 3310 iwl_write32(priv, HBUS_TARG_WRPTR,
fc4b6853 3311 txq->q.write_ptr | (txq_id << 8));
b481de9c
ZY		 3312
3313 txq->need_update = 0;
3314
3315 return rc;
3316}
3317
0a6857e7 3318#ifdef CONFIG_IWLWIFI_DEBUG
bf403db8 3319static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
b481de9c 3320{
bf403db8 3321 struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
0795af57
JP		 3322 DECLARE_MAC_BUF(mac);
3323
b481de9c 3324 IWL_DEBUG_RADIO("RX CONFIG:\n");
bf403db8 3325 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
b481de9c
ZY		 3326 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
3327 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
3328 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
3329 le32_to_cpu(rxon->filter_flags));
3330 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
3331 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
3332 rxon->ofdm_basic_rates);
3333 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
0795af57
JP		 3334 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
3335 print_mac(mac, rxon->node_addr));
3336 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
3337 print_mac(mac, rxon->bssid_addr));
b481de9c
ZY		 3338 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
3339}
3340#endif
3341
c79dd5b5 3342static void iwl4965_enable_interrupts(struct iwl_priv *priv)
b481de9c
ZY		 3343{
3344 IWL_DEBUG_ISR("Enabling interrupts\n");
3345 set_bit(STATUS_INT_ENABLED, &priv->status);
3395f6e9 3346 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
b481de9c
ZY		 3347}
3348
0359facc
MA		 3349/* call this function to flush any scheduled tasklet */
3350static inline void iwl_synchronize_irq(struct iwl_priv *priv)
3351{
3352 /* wait to make sure we flush pedding tasklet*/
3353 synchronize_irq(priv->pci_dev->irq);
3354 tasklet_kill(&priv->irq_tasklet);
3355}
3356
c79dd5b5 3357static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
b481de9c
ZY		 3358{
3359 clear_bit(STATUS_INT_ENABLED, &priv->status);
3360
3361 /* disable interrupts from uCode/NIC to host */
3395f6e9 3362 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
b481de9c
ZY		 3363
3364 /* acknowledge/clear/reset any interrupts still pending
3365 * from uCode or flow handler (Rx/Tx DMA) */
3395f6e9
TW		 3366 iwl_write32(priv, CSR_INT, 0xffffffff);
3367 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
b481de9c
ZY		 3368 IWL_DEBUG_ISR("Disabled interrupts\n");
3369}
3370
3371static const char *desc_lookup(int i)
3372{
3373 switch (i) {
3374 case 1:
3375 return "FAIL";
3376 case 2:
3377 return "BAD_PARAM";
3378 case 3:
3379 return "BAD_CHECKSUM";
3380 case 4:
3381 return "NMI_INTERRUPT";
3382 case 5:
3383 return "SYSASSERT";
3384 case 6:
3385 return "FATAL_ERROR";
3386 }
3387
3388 return "UNKNOWN";
3389}
3390
3391#define ERROR_START_OFFSET (1 * sizeof(u32))
3392#define ERROR_ELEM_SIZE (7 * sizeof(u32))
3393
c79dd5b5 3394static void iwl4965_dump_nic_error_log(struct iwl_priv *priv)
b481de9c
ZY		 3395{
3396 u32 data2, line;
3397 u32 desc, time, count, base, data1;
3398 u32 blink1, blink2, ilink1, ilink2;
3399 int rc;
3400
3401 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
3402
57aab75a 3403 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
b481de9c
ZY		 3404 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
3405 return;
3406 }
3407
3395f6e9 3408 rc = iwl_grab_nic_access(priv);
b481de9c
ZY		 3409 if (rc) {
3410 IWL_WARNING("Can not read from adapter at this time.\n");
3411 return;
3412 }
3413
3395f6e9 3414 count = iwl_read_targ_mem(priv, base);
b481de9c
ZY		 3415
3416 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
3417 IWL_ERROR("Start IWL Error Log Dump:\n");
2acae16e 3418 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
b481de9c
ZY		 3419 }
3420
3395f6e9
TW		 3421 desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
3422 blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
3423 blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
3424 ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
3425 ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
3426 data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
3427 data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
3428 line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
3429 time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
b481de9c
ZY		 3430
3431 IWL_ERROR("Desc Time "
3432 "data1 data2 line\n");
3433 IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
3434 desc_lookup(desc), desc, time, data1, data2, line);
3435 IWL_ERROR("blink1 blink2 ilink1 ilink2\n");
3436 IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
3437 ilink1, ilink2);
3438
3395f6e9 3439 iwl_release_nic_access(priv);
b481de9c
ZY		 3440}
3441
3442#define EVENT_START_OFFSET (4 * sizeof(u32))
3443
3444/**
bb8c093b 3445 * iwl4965_print_event_log - Dump error event log to syslog
b481de9c 3446 *
3395f6e9 3447 * NOTE: Must be called with iwl_grab_nic_access() already obtained!
b481de9c 3448 */
c79dd5b5 3449static void iwl4965_print_event_log(struct iwl_priv *priv, u32 start_idx,
b481de9c
ZY		 3450 u32 num_events, u32 mode)
3451{
3452 u32 i;
3453 u32 base; /* SRAM byte address of event log header */
3454 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
3455 u32 ptr; /* SRAM byte address of log data */
3456 u32 ev, time, data; /* event log data */
3457
3458 if (num_events == 0)
3459 return;
3460
3461 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
3462
3463 if (mode == 0)
3464 event_size = 2 * sizeof(u32);
3465 else
3466 event_size = 3 * sizeof(u32);
3467
3468 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
3469
3470 /* "time" is actually "data" for mode 0 (no timestamp).
3471 * place event id # at far right for easier visual parsing. */
3472 for (i = 0; i < num_events; i++) {
3395f6e9 3473 ev = iwl_read_targ_mem(priv, ptr);
b481de9c 3474 ptr += sizeof(u32);
3395f6e9 3475 time = iwl_read_targ_mem(priv, ptr);
b481de9c
ZY		 3476 ptr += sizeof(u32);
3477 if (mode == 0)
3478 IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
3479 else {
3395f6e9 3480 data = iwl_read_targ_mem(priv, ptr);
b481de9c
ZY		 3481 ptr += sizeof(u32);
3482 IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
3483 }
3484 }
3485}
3486
c79dd5b5 3487static void iwl4965_dump_nic_event_log(struct iwl_priv *priv)
b481de9c
ZY		 3488{
3489 int rc;
3490 u32 base; /* SRAM byte address of event log header */
3491 u32 capacity; /* event log capacity in # entries */
3492 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
3493 u32 num_wraps; /* # times uCode wrapped to top of log */
3494 u32 next_entry; /* index of next entry to be written by uCode */
3495 u32 size; /* # entries that we'll print */
3496
3497 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
57aab75a 3498 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
b481de9c
ZY		 3499 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
3500 return;
3501 }
3502
3395f6e9 3503 rc = iwl_grab_nic_access(priv);
b481de9c
ZY		 3504 if (rc) {
3505 IWL_WARNING("Can not read from adapter at this time.\n");
3506 return;
3507 }
3508
3509 /* event log header */
3395f6e9
TW		 3510 capacity = iwl_read_targ_mem(priv, base);
3511 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
3512 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
3513 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
b481de9c
ZY		 3514
3515 size = num_wraps ? capacity : next_entry;
3516
3517 /* bail out if nothing in log */
3518 if (size == 0) {
583fab37 3519 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
3395f6e9 3520 iwl_release_nic_access(priv);
b481de9c
ZY		 3521 return;
3522 }
3523
583fab37 3524 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
b481de9c
ZY		 3525 size, num_wraps);
3526
3527 /* if uCode has wrapped back to top of log, start at the oldest entry,
3528 * i.e the next one that uCode would fill. */
3529 if (num_wraps)
bb8c093b 3530 iwl4965_print_event_log(priv, next_entry,
b481de9c
ZY		 3531 capacity - next_entry, mode);
3532
3533 /* (then/else) start at top of log */
bb8c093b 3534 iwl4965_print_event_log(priv, 0, next_entry, mode);
b481de9c 3535
3395f6e9 3536 iwl_release_nic_access(priv);
b481de9c
ZY		 3537}
3538
3539/**
bb8c093b 3540 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
b481de9c 3541 */
c79dd5b5 3542static void iwl4965_irq_handle_error(struct iwl_priv *priv)
b481de9c 3543{
bb8c093b 3544 /* Set the FW error flag -- cleared on iwl4965_down */
b481de9c
ZY		 3545 set_bit(STATUS_FW_ERROR, &priv->status);
3546
3547 /* Cancel currently queued command. */
3548 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3549
0a6857e7 3550#ifdef CONFIG_IWLWIFI_DEBUG
bf403db8 3551 if (priv->debug_level & IWL_DL_FW_ERRORS) {
bb8c093b
CH		 3552 iwl4965_dump_nic_error_log(priv);
3553 iwl4965_dump_nic_event_log(priv);
bf403db8 3554 iwl4965_print_rx_config_cmd(priv);
b481de9c
ZY		 3555 }
3556#endif
3557
3558 wake_up_interruptible(&priv->wait_command_queue);
3559
3560 /* Keep the restart process from trying to send host
3561 * commands by clearing the INIT status bit */
3562 clear_bit(STATUS_READY, &priv->status);
3563
3564 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3565 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
3566 "Restarting adapter due to uCode error.\n");
3567
3109ece1 3568 if (iwl_is_associated(priv)) {
b481de9c
ZY		 3569 memcpy(&priv->recovery_rxon, &priv->active_rxon,
3570 sizeof(priv->recovery_rxon));
3571 priv->error_recovering = 1;
3572 }
3573 queue_work(priv->workqueue, &priv->restart);
3574 }
3575}
3576
c79dd5b5 3577static void iwl4965_error_recovery(struct iwl_priv *priv)
b481de9c
ZY		 3578{
3579 unsigned long flags;
3580
3581 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
3582 sizeof(priv->staging_rxon));
3583 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
bb8c093b 3584 iwl4965_commit_rxon(priv);
b481de9c 3585
bb8c093b 3586 iwl4965_rxon_add_station(priv, priv->bssid, 1);
b481de9c
ZY		 3587
3588 spin_lock_irqsave(&priv->lock, flags);
3589 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
3590 priv->error_recovering = 0;
3591 spin_unlock_irqrestore(&priv->lock, flags);
3592}
3593
c79dd5b5 3594static void iwl4965_irq_tasklet(struct iwl_priv *priv)
b481de9c
ZY		 3595{
3596 u32 inta, handled = 0;
3597 u32 inta_fh;
3598 unsigned long flags;
0a6857e7 3599#ifdef CONFIG_IWLWIFI_DEBUG
b481de9c
ZY		 3600 u32 inta_mask;
3601#endif
3602
3603 spin_lock_irqsave(&priv->lock, flags);
3604
3605 /* Ack/clear/reset pending uCode interrupts.
3606 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
3607 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
3395f6e9
TW		 3608 inta = iwl_read32(priv, CSR_INT);
3609 iwl_write32(priv, CSR_INT, inta);
b481de9c
ZY		 3610
3611 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
3612 * Any new interrupts that happen after this, either while we're
3613 * in this tasklet, or later, will show up in next ISR/tasklet. */
3395f6e9
TW		 3614 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
3615 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
b481de9c 3616
0a6857e7 3617#ifdef CONFIG_IWLWIFI_DEBUG
bf403db8 3618 if (priv->debug_level & IWL_DL_ISR) {
9fbab516 3619 /* just for debug */
3395f6e9 3620 inta_mask = iwl_read32(priv, CSR_INT_MASK);
b481de9c
ZY		 3621 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
3622 inta, inta_mask, inta_fh);
3623 }
3624#endif
3625
3626 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
3627 * atomic, make sure that inta covers all the interrupts that
3628 * we've discovered, even if FH interrupt came in just after
3629 * reading CSR_INT. */
6f83eaa1 3630 if (inta_fh & CSR49_FH_INT_RX_MASK)
b481de9c 3631 inta |= CSR_INT_BIT_FH_RX;
6f83eaa1 3632 if (inta_fh & CSR49_FH_INT_TX_MASK)
b481de9c
ZY		 3633 inta |= CSR_INT_BIT_FH_TX;
3634
3635 /* Now service all interrupt bits discovered above. */
3636 if (inta & CSR_INT_BIT_HW_ERR) {
3637 IWL_ERROR("Microcode HW error detected. Restarting.\n");
3638
3639 /* Tell the device to stop sending interrupts */
bb8c093b 3640 iwl4965_disable_interrupts(priv);
b481de9c 3641
bb8c093b 3642 iwl4965_irq_handle_error(priv);
b481de9c
ZY		 3643
3644 handled |= CSR_INT_BIT_HW_ERR;
3645
3646 spin_unlock_irqrestore(&priv->lock, flags);
3647
3648 return;
3649 }
3650
0a6857e7 3651#ifdef CONFIG_IWLWIFI_DEBUG
bf403db8 3652 if (priv->debug_level & (IWL_DL_ISR)) {
b481de9c 3653 /* NIC fires this, but we don't use it, redundant with WAKEUP */
25c03d8e
JP		 3654 if (inta & CSR_INT_BIT_SCD)
3655 IWL_DEBUG_ISR("Scheduler finished to transmit "
3656 "the frame/frames.\n");
b481de9c
ZY		 3657
3658 /* Alive notification via Rx interrupt will do the real work */
3659 if (inta & CSR_INT_BIT_ALIVE)
3660 IWL_DEBUG_ISR("Alive interrupt\n");
3661 }
3662#endif
3663 /* Safely ignore these bits for debug checks below */
25c03d8e 3664 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
b481de9c 3665
9fbab516 3666 /* HW RF KILL switch toggled */
b481de9c
ZY		 3667 if (inta & CSR_INT_BIT_RF_KILL) {
3668 int hw_rf_kill = 0;
3395f6e9 3669 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
b481de9c
ZY		 3670 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
3671 hw_rf_kill = 1;
3672
3673 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
3674 "RF_KILL bit toggled to %s.\n",
3675 hw_rf_kill ? "disable radio":"enable radio");
3676
3677 /* Queue restart only if RF_KILL switch was set to "kill"
3678 * when we loaded driver, and is now set to "enable".
3679 * After we're Alive, RF_KILL gets handled by
3230455d 3680 * iwl4965_rx_card_state_notif() */
53e49093
ZY		 3681 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
3682 clear_bit(STATUS_RF_KILL_HW, &priv->status);
b481de9c 3683 queue_work(priv->workqueue, &priv->restart);
53e49093 3684 }
b481de9c
ZY		 3685
3686 handled |= CSR_INT_BIT_RF_KILL;
3687 }
3688
9fbab516 3689 /* Chip got too hot and stopped itself */
b481de9c
ZY		 3690 if (inta & CSR_INT_BIT_CT_KILL) {
3691 IWL_ERROR("Microcode CT kill error detected.\n");
3692 handled |= CSR_INT_BIT_CT_KILL;
3693 }
3694
3695 /* Error detected by uCode */
3696 if (inta & CSR_INT_BIT_SW_ERR) {
3697 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
3698 inta);
bb8c093b 3699 iwl4965_irq_handle_error(priv);
b481de9c
ZY		 3700 handled |= CSR_INT_BIT_SW_ERR;
3701 }
3702
3703 /* uCode wakes up after power-down sleep */
3704 if (inta & CSR_INT_BIT_WAKEUP) {
3705 IWL_DEBUG_ISR("Wakeup interrupt\n");
a55360e4 3706 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
bb8c093b
CH		 3707 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]);
3708 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]);
3709 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]);
3710 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]);
3711 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]);
3712 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]);
b481de9c
ZY		 3713
3714 handled |= CSR_INT_BIT_WAKEUP;
3715 }
3716
3717 /* All uCode command responses, including Tx command responses,
3718 * Rx "responses" (frame-received notification), and other
3719 * notifications from uCode come through here*/
3720 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
a55360e4 3721 iwl_rx_handle(priv);
b481de9c
ZY		 3722 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
3723 }
3724
3725 if (inta & CSR_INT_BIT_FH_TX) {
3726 IWL_DEBUG_ISR("Tx interrupt\n");
3727 handled |= CSR_INT_BIT_FH_TX;
3728 }
3729
3730 if (inta & ~handled)
3731 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
3732
3733 if (inta & ~CSR_INI_SET_MASK) {
3734 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
3735 inta & ~CSR_INI_SET_MASK);
3736 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
3737 }
3738
3739 /* Re-enable all interrupts */
0359facc
MA		 3740 /* only Re-enable if diabled by irq */
3741 if (test_bit(STATUS_INT_ENABLED, &priv->status))
3742 iwl4965_enable_interrupts(priv);
b481de9c 3743
0a6857e7 3744#ifdef CONFIG_IWLWIFI_DEBUG
bf403db8 3745 if (priv->debug_level & (IWL_DL_ISR)) {
3395f6e9
TW		 3746 inta = iwl_read32(priv, CSR_INT);
3747 inta_mask = iwl_read32(priv, CSR_INT_MASK);
3748 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
b481de9c
ZY		 3749 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
3750 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
3751 }
3752#endif
3753 spin_unlock_irqrestore(&priv->lock, flags);
3754}
3755
bb8c093b 3756static irqreturn_t iwl4965_isr(int irq, void *data)
b481de9c 3757{
c79dd5b5 3758 struct iwl_priv *priv = data;
b481de9c
ZY		 3759 u32 inta, inta_mask;
3760 u32 inta_fh;
3761 if (!priv)
3762 return IRQ_NONE;
3763
3764 spin_lock(&priv->lock);
3765
3766 /* Disable (but don't clear!) interrupts here to avoid
3767 * back-to-back ISRs and sporadic interrupts from our NIC.
3768 * If we have something to service, the tasklet will re-enable ints.
3769 * If we *don't* have something, we'll re-enable before leaving here. */
3395f6e9
TW		 3770 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
3771 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
b481de9c
ZY		 3772
3773 /* Discover which interrupts are active/pending */
3395f6e9
TW		 3774 inta = iwl_read32(priv, CSR_INT);
3775 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
b481de9c
ZY		 3776
3777 /* Ignore interrupt if there's nothing in NIC to service.
3778 * This may be due to IRQ shared with another device,
3779 * or due to sporadic interrupts thrown from our NIC. */
3780 if (!inta && !inta_fh) {
3781 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
3782 goto none;
3783 }
3784
3785 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
66fbb541
ON		 3786 /* Hardware disappeared. It might have already raised
3787 * an interrupt */
b481de9c 3788 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
66fbb541 3789 goto unplugged;
b481de9c
ZY		 3790 }
3791
3792 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
3793 inta, inta_mask, inta_fh);
3794
25c03d8e
JP		 3795 inta &= ~CSR_INT_BIT_SCD;
3796
bb8c093b 3797 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
25c03d8e
JP		 3798 if (likely(inta || inta_fh))
3799 tasklet_schedule(&priv->irq_tasklet);
b481de9c 3800
66fbb541
ON		 3801 unplugged:
3802 spin_unlock(&priv->lock);
b481de9c
ZY		 3803 return IRQ_HANDLED;
3804
3805 none:
3806 /* re-enable interrupts here since we don't have anything to service. */
0359facc
MA		 3807 /* only Re-enable if diabled by irq */
3808 if (test_bit(STATUS_INT_ENABLED, &priv->status))
3809 iwl4965_enable_interrupts(priv);
b481de9c
ZY		 3810 spin_unlock(&priv->lock);
3811 return IRQ_NONE;
3812}
3813
b481de9c
ZY		 3814/* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
3815 * sending probe req. This should be set long enough to hear probe responses
3816 * from more than one AP. */
3817#define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
3818#define IWL_ACTIVE_DWELL_TIME_52 (10)
3819
3820/* For faster active scanning, scan will move to the next channel if fewer than
3821 * PLCP_QUIET_THRESH packets are heard on this channel within
3822 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
3823 * time if it's a quiet channel (nothing responded to our probe, and there's
3824 * no other traffic).
3825 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
3826#define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
3827#define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
3828
3829/* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
3830 * Must be set longer than active dwell time.
3831 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
3832#define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
3833#define IWL_PASSIVE_DWELL_TIME_52 (10)
3834#define IWL_PASSIVE_DWELL_BASE (100)
3835#define IWL_CHANNEL_TUNE_TIME 5
3836
c79dd5b5 3837static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
8318d78a 3838 enum ieee80211_band band)
b481de9c 3839{
8318d78a 3840 if (band == IEEE80211_BAND_5GHZ)
b481de9c
ZY		 3841 return IWL_ACTIVE_DWELL_TIME_52;
3842 else
3843 return IWL_ACTIVE_DWELL_TIME_24;
3844}
3845
c79dd5b5 3846static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
8318d78a 3847 enum ieee80211_band band)
b481de9c 3848{
8318d78a
JB		 3849 u16 active = iwl4965_get_active_dwell_time(priv, band);
3850 u16 passive = (band != IEEE80211_BAND_5GHZ) ?
b481de9c
ZY		 3851 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
3852 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
3853
3109ece1 3854 if (iwl_is_associated(priv)) {
b481de9c
ZY		 3855 /* If we're associated, we clamp the maximum passive
3856 * dwell time to be 98% of the beacon interval (minus
3857 * 2 * channel tune time) */
3858 passive = priv->beacon_int;
3859 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
3860 passive = IWL_PASSIVE_DWELL_BASE;
3861 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
3862 }
3863
3864 if (passive <= active)
3865 passive = active + 1;
3866
3867 return passive;
3868}
3869
c79dd5b5 3870static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
8318d78a 3871 enum ieee80211_band band,
b481de9c 3872 u8 is_active, u8 direct_mask,
bb8c093b 3873 struct iwl4965_scan_channel *scan_ch)
b481de9c
ZY		 3874{
3875 const struct ieee80211_channel *channels = NULL;
8318d78a 3876 const struct ieee80211_supported_band *sband;
bf85ea4f 3877 const struct iwl_channel_info *ch_info;
b481de9c
ZY		 3878 u16 passive_dwell = 0;
3879 u16 active_dwell = 0;
3880 int added, i;
3881
d1141dfb 3882 sband = iwl_get_hw_mode(priv, band);
8318d78a 3883 if (!sband)
b481de9c
ZY		 3884 return 0;
3885
8318d78a 3886 channels = sband->channels;
b481de9c 3887
8318d78a
JB		 3888 active_dwell = iwl4965_get_active_dwell_time(priv, band);
3889 passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
b481de9c 3890
8318d78a 3891 for (i = 0, added = 0; i < sband->n_channels; i++) {
182e2e66
JB		 3892 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
3893 continue;
3894
8318d78a 3895 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
b481de9c 3896
8622e705 3897 ch_info = iwl_get_channel_info(priv, band,
9fbab516 3898 scan_ch->channel);
b481de9c
ZY		 3899 if (!is_channel_valid(ch_info)) {
3900 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
3901 scan_ch->channel);
3902 continue;
3903 }
3904
3905 if (!is_active || is_channel_passive(ch_info) ||
8318d78a 3906 (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
b481de9c
ZY		 3907 scan_ch->type = 0; /* passive */
3908 else
3909 scan_ch->type = 1; /* active */
3910
3911 if (scan_ch->type & 1)
3912 scan_ch->type |= (direct_mask << 1);
3913
b481de9c
ZY		 3914 scan_ch->active_dwell = cpu_to_le16(active_dwell);
3915 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
3916
9fbab516 3917 /* Set txpower levels to defaults */
b481de9c
ZY		 3918 scan_ch->tpc.dsp_atten = 110;
3919 /* scan_pwr_info->tpc.dsp_atten; */
3920
3921 /*scan_pwr_info->tpc.tx_gain; */
8318d78a 3922 if (band == IEEE80211_BAND_5GHZ)
b481de9c
ZY		 3923 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
3924 else {
3925 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
3926 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
9fbab516 3927 * power level:
8a1b0245 3928 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
b481de9c
ZY		 3929 */
3930 }
3931
3932 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
3933 scan_ch->channel,
3934 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
3935 (scan_ch->type & 1) ?
3936 active_dwell : passive_dwell);
3937
3938 scan_ch++;
3939 added++;
3940 }
3941
3942 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
3943 return added;
3944}
3945
b481de9c
ZY		 3946/******************************************************************************
3947 *
3948 * uCode download functions
3949 *
3950 ******************************************************************************/
3951
c79dd5b5 3952static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
b481de9c 3953{
98c92211
TW		 3954 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
3955 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
3956 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
3957 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
3958 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
3959 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
b481de9c
ZY		 3960}
3961
c79dd5b5 3962static void iwl4965_nic_start(struct iwl_priv *priv)
b481de9c
ZY		 3963{
3964 /* Remove all resets to allow NIC to operate */
3395f6e9 3965 iwl_write32(priv, CSR_RESET, 0);
b481de9c
ZY		 3966}
3967
90e759d1 3968
b481de9c 3969/**
bb8c093b 3970 * iwl4965_read_ucode - Read uCode images from disk file.
b481de9c
ZY		 3971 *
3972 * Copy into buffers for card to fetch via bus-mastering
3973 */
c79dd5b5 3974static int iwl4965_read_ucode(struct iwl_priv *priv)
b481de9c 3975{
bb8c093b 3976 struct iwl4965_ucode *ucode;
90e759d1 3977 int ret;
b481de9c 3978 const struct firmware *ucode_raw;
4bf775cd 3979 const char *name = priv->cfg->fw_name;
b481de9c
ZY		 3980 u8 *src;
3981 size_t len;
3982 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
3983
3984 /* Ask kernel firmware_class module to get the boot firmware off disk.
3985 * request_firmware() is synchronous, file is in memory on return. */
90e759d1
TW		 3986 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
3987 if (ret < 0) {
3988 IWL_ERROR("%s firmware file req failed: Reason %d\n",
3989 name, ret);
b481de9c
ZY		 3990 goto error;
3991 }
3992
3993 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
3994 name, ucode_raw->size);
3995
3996 /* Make sure that we got at least our header! */
3997 if (ucode_raw->size < sizeof(*ucode)) {
3998 IWL_ERROR("File size way too small!\n");
90e759d1 3999 ret = -EINVAL;
b481de9c
ZY		 4000 goto err_release;
4001 }
4002
4003 /* Data from ucode file: header followed by uCode images */
4004 ucode = (void *)ucode_raw->data;
4005
4006 ver = le32_to_cpu(ucode->ver);
4007 inst_size = le32_to_cpu(ucode->inst_size);
4008 data_size = le32_to_cpu(ucode->data_size);
4009 init_size = le32_to_cpu(ucode->init_size);
4010 init_data_size = le32_to_cpu(ucode->init_data_size);
4011 boot_size = le32_to_cpu(ucode->boot_size);
4012
4013 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
4014 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
4015 inst_size);
4016 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
4017 data_size);
4018 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
4019 init_size);
4020 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
4021 init_data_size);
4022 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
4023 boot_size);
4024
4025 /* Verify size of file vs. image size info in file's header */
4026 if (ucode_raw->size < sizeof(*ucode) +
4027 inst_size + data_size + init_size +
4028 init_data_size + boot_size) {
4029
4030 IWL_DEBUG_INFO("uCode file size %d too small\n",
4031 (int)ucode_raw->size);
90e759d1 4032 ret = -EINVAL;
b481de9c
ZY		 4033 goto err_release;
4034 }
4035
4036 /* Verify that uCode images will fit in card's SRAM */
099b40b7 4037 if (inst_size > priv->hw_params.max_inst_size) {
90e759d1
TW		 4038 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
4039 inst_size);
4040 ret = -EINVAL;
b481de9c
ZY		 4041 goto err_release;
4042 }
4043
099b40b7 4044 if (data_size > priv->hw_params.max_data_size) {
90e759d1
TW		 4045 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
4046 data_size);
4047 ret = -EINVAL;
b481de9c
ZY		 4048 goto err_release;
4049 }
099b40b7 4050 if (init_size > priv->hw_params.max_inst_size) {
b481de9c 4051 IWL_DEBUG_INFO
90e759d1
TW		 4052 ("uCode init instr len %d too large to fit in\n",
4053 init_size);
4054 ret = -EINVAL;
b481de9c
ZY		 4055 goto err_release;
4056 }
099b40b7 4057 if (init_data_size > priv->hw_params.max_data_size) {
b481de9c 4058 IWL_DEBUG_INFO
90e759d1
TW		 4059 ("uCode init data len %d too large to fit in\n",
4060 init_data_size);
4061 ret = -EINVAL;
b481de9c
ZY		 4062 goto err_release;
4063 }
099b40b7 4064 if (boot_size > priv->hw_params.max_bsm_size) {
b481de9c 4065 IWL_DEBUG_INFO
90e759d1
TW		 4066 ("uCode boot instr len %d too large to fit in\n",
4067 boot_size);
4068 ret = -EINVAL;
b481de9c
ZY		 4069 goto err_release;
4070 }
4071
4072 /* Allocate ucode buffers for card's bus-master loading ... */
4073
4074 /* Runtime instructions and 2 copies of data:
4075 * 1) unmodified from disk
4076 * 2) backup cache for save/restore during power-downs */
4077 priv->ucode_code.len = inst_size;
98c92211 4078 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
b481de9c
ZY		 4079
4080 priv->ucode_data.len = data_size;
98c92211 4081 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
b481de9c
ZY		 4082
4083 priv->ucode_data_backup.len = data_size;
98c92211 4084 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
b481de9c
ZY		 4085
4086 /* Initialization instructions and data */
90e759d1
TW		 4087 if (init_size && init_data_size) {
4088 priv->ucode_init.len = init_size;
98c92211 4089 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
90e759d1
TW		 4090
4091 priv->ucode_init_data.len = init_data_size;
98c92211 4092 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
90e759d1
TW		 4093
4094 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
4095 goto err_pci_alloc;
4096 }
b481de9c
ZY		 4097
4098 /* Bootstrap (instructions only, no data) */
90e759d1
TW		 4099 if (boot_size) {
4100 priv->ucode_boot.len = boot_size;
98c92211 4101 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
b481de9c 4102
90e759d1
TW		 4103 if (!priv->ucode_boot.v_addr)
4104 goto err_pci_alloc;
4105 }
b481de9c
ZY		 4106
4107 /* Copy images into buffers for card's bus-master reads ... */
4108
4109 /* Runtime instructions (first block of data in file) */
4110 src = &ucode->data[0];
4111 len = priv->ucode_code.len;
90e759d1 4112 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
b481de9c
ZY		 4113 memcpy(priv->ucode_code.v_addr, src, len);
4114 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
4115 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
4116
4117 /* Runtime data (2nd block)
bb8c093b 4118 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
b481de9c
ZY		 4119 src = &ucode->data[inst_size];
4120 len = priv->ucode_data.len;
90e759d1 4121 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
b481de9c
ZY		 4122 memcpy(priv->ucode_data.v_addr, src, len);
4123 memcpy(priv->ucode_data_backup.v_addr, src, len);
4124
4125 /* Initialization instructions (3rd block) */
4126 if (init_size) {
4127 src = &ucode->data[inst_size + data_size];
4128 len = priv->ucode_init.len;
90e759d1
TW		 4129 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
4130 len);
b481de9c
ZY		 4131 memcpy(priv->ucode_init.v_addr, src, len);
4132 }
4133
4134 /* Initialization data (4th block) */
4135 if (init_data_size) {
4136 src = &ucode->data[inst_size + data_size + init_size];
4137 len = priv->ucode_init_data.len;
90e759d1
TW		 4138 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
4139 len);
b481de9c
ZY		 4140 memcpy(priv->ucode_init_data.v_addr, src, len);
4141 }
4142
4143 /* Bootstrap instructions (5th block) */
4144 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
4145 len = priv->ucode_boot.len;
90e759d1 4146 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
b481de9c
ZY		 4147 memcpy(priv->ucode_boot.v_addr, src, len);
4148
4149 /* We have our copies now, allow OS release its copies */
4150 release_firmware(ucode_raw);
4151 return 0;
4152
4153 err_pci_alloc:
4154 IWL_ERROR("failed to allocate pci memory\n");
90e759d1 4155 ret = -ENOMEM;
bb8c093b 4156 iwl4965_dealloc_ucode_pci(priv);
b481de9c
ZY		 4157
4158 err_release:
4159 release_firmware(ucode_raw);
4160
4161 error:
90e759d1 4162 return ret;
b481de9c
ZY		 4163}
4164
4165
4166/**
bb8c093b 4167 * iwl4965_set_ucode_ptrs - Set uCode address location
b481de9c
ZY		 4168 *
4169 * Tell initialization uCode where to find runtime uCode.
4170 *
4171 * BSM registers initially contain pointers to initialization uCode.
4172 * We need to replace them to load runtime uCode inst and data,
4173 * and to save runtime data when powering down.
4174 */
c79dd5b5 4175static int iwl4965_set_ucode_ptrs(struct iwl_priv *priv)
b481de9c
ZY		 4176{
4177 dma_addr_t pinst;
4178 dma_addr_t pdata;
4179 int rc = 0;
4180 unsigned long flags;
4181
4182 /* bits 35:4 for 4965 */
4183 pinst = priv->ucode_code.p_addr >> 4;
4184 pdata = priv->ucode_data_backup.p_addr >> 4;
4185
4186 spin_lock_irqsave(&priv->lock, flags);
3395f6e9 4187 rc = iwl_grab_nic_access(priv);
b481de9c
ZY		 4188 if (rc) {
4189 spin_unlock_irqrestore(&priv->lock, flags);
4190 return rc;
4191 }
4192
4193 /* Tell bootstrap uCode where to find image to load */
3395f6e9
TW		 4194 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
4195 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
4196 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
b481de9c
ZY		 4197 priv->ucode_data.len);
4198
4199 /* Inst bytecount must be last to set up, bit 31 signals uCode
4200 * that all new ptr/size info is in place */
3395f6e9 4201 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
b481de9c
ZY		 4202 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
4203
3395f6e9 4204 iwl_release_nic_access(priv);
b481de9c
ZY		 4205
4206 spin_unlock_irqrestore(&priv->lock, flags);
4207
4208 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
4209
4210 return rc;
4211}
4212
4213/**
bb8c093b 4214 * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
b481de9c
ZY		 4215 *
4216 * Called after REPLY_ALIVE notification received from "initialize" uCode.
4217 *
4218 * The 4965 "initialize" ALIVE reply contains calibration data for:
4219 * Voltage, temperature, and MIMO tx gain correction, now stored in priv
4220 * (3945 does not contain this data).
4221 *
4222 * Tell "initialize" uCode to go ahead and load the runtime uCode.
4223*/
c79dd5b5 4224static void iwl4965_init_alive_start(struct iwl_priv *priv)
b481de9c
ZY		 4225{
4226 /* Check alive response for "valid" sign from uCode */
4227 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
4228 /* We had an error bringing up the hardware, so take it
4229 * all the way back down so we can try again */
4230 IWL_DEBUG_INFO("Initialize Alive failed.\n");
4231 goto restart;
4232 }
4233
4234 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
4235 * This is a paranoid check, because we would not have gotten the
4236 * "initialize" alive if code weren't properly loaded. */
b0692f2f 4237 if (iwl_verify_ucode(priv)) {
b481de9c
ZY		 4238 /* Runtime instruction load was bad;
4239 * take it all the way back down so we can try again */
4240 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
4241 goto restart;
4242 }
4243
4244 /* Calculate temperature */
4245 priv->temperature = iwl4965_get_temperature(priv);
4246
4247 /* Send pointers to protocol/runtime uCode image ... init code will
4248 * load and launch runtime uCode, which will send us another "Alive"
4249 * notification. */
4250 IWL_DEBUG_INFO("Initialization Alive received.\n");
bb8c093b 4251 if (iwl4965_set_ucode_ptrs(priv)) {
b481de9c
ZY		 4252 /* Runtime instruction load won't happen;
4253 * take it all the way back down so we can try again */
4254 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
4255 goto restart;
4256 }
4257 return;
4258
4259 restart:
4260 queue_work(priv->workqueue, &priv->restart);
4261}
4262
4263
4264/**
bb8c093b 4265 * iwl4965_alive_start - called after REPLY_ALIVE notification received
b481de9c 4266 * from protocol/runtime uCode (initialization uCode's
bb8c093b 4267 * Alive gets handled by iwl4965_init_alive_start()).
b481de9c 4268 */
c79dd5b5 4269static void iwl4965_alive_start(struct iwl_priv *priv)
b481de9c 4270{
57aab75a 4271 int ret = 0;
b481de9c
ZY		 4272
4273 IWL_DEBUG_INFO("Runtime Alive received.\n");
4274
4275 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
4276 /* We had an error bringing up the hardware, so take it
4277 * all the way back down so we can try again */
4278 IWL_DEBUG_INFO("Alive failed.\n");
4279 goto restart;
4280 }
4281
4282 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
4283 * This is a paranoid check, because we would not have gotten the
4284 * "runtime" alive if code weren't properly loaded. */
b0692f2f 4285 if (iwl_verify_ucode(priv)) {
b481de9c
ZY		 4286 /* Runtime instruction load was bad;
4287 * take it all the way back down so we can try again */
4288 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
4289 goto restart;
4290 }
4291
bf85ea4f 4292 iwlcore_clear_stations_table(priv);
b481de9c 4293
57aab75a
TW		 4294 ret = priv->cfg->ops->lib->alive_notify(priv);
4295 if (ret) {
b481de9c 4296 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
57aab75a 4297 ret);
b481de9c
ZY		 4298 goto restart;
4299 }
4300
9fbab516 4301 /* After the ALIVE response, we can send host commands to 4965 uCode */
b481de9c
ZY		 4302 set_bit(STATUS_ALIVE, &priv->status);
4303
4304 /* Clear out the uCode error bit if it is set */
4305 clear_bit(STATUS_FW_ERROR, &priv->status);
4306
fee1247a 4307 if (iwl_is_rfkill(priv))
b481de9c
ZY		 4308 return;
4309
5a66926a 4310 ieee80211_start_queues(priv->hw);
b481de9c
ZY		 4311
4312 priv->active_rate = priv->rates_mask;
4313 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
4314
3109ece1 4315 if (iwl_is_associated(priv)) {
bb8c093b
CH		 4316 struct iwl4965_rxon_cmd *active_rxon =
4317 (struct iwl4965_rxon_cmd *)(&priv->active_rxon);
b481de9c
ZY		 4318
4319 memcpy(&priv->staging_rxon, &priv->active_rxon,
4320 sizeof(priv->staging_rxon));
4321 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4322 } else {
4323 /* Initialize our rx_config data */
bb8c093b 4324 iwl4965_connection_init_rx_config(priv);
b481de9c
ZY		 4325 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
4326 }
4327
9fbab516 4328 /* Configure Bluetooth device coexistence support */
bb8c093b 4329 iwl4965_send_bt_config(priv);
b481de9c
ZY		 4330
4331 /* Configure the adapter for unassociated operation */
bb8c093b 4332 iwl4965_commit_rxon(priv);
b481de9c
ZY		 4333
4334 /* At this point, the NIC is initialized and operational */
4335 priv->notif_missed_beacons = 0;
b481de9c
ZY		 4336
4337 iwl4965_rf_kill_ct_config(priv);
5a66926a 4338
fe00b5a5
RC		 4339 iwl_leds_register(priv);
4340
b481de9c 4341 IWL_DEBUG_INFO("ALIVE processing complete.\n");
a9f46786 4342 set_bit(STATUS_READY, &priv->status);
5a66926a 4343 wake_up_interruptible(&priv->wait_command_queue);
b481de9c
ZY		 4344
4345 if (priv->error_recovering)
bb8c093b 4346 iwl4965_error_recovery(priv);
b481de9c 4347
c8381fdc 4348 iwlcore_low_level_notify(priv, IWLCORE_START_EVT);
84363e6e 4349 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
b481de9c
ZY		 4350 return;
4351
4352 restart:
4353 queue_work(priv->workqueue, &priv->restart);
4354}
4355
c79dd5b5 4356static void iwl4965_cancel_deferred_work(struct iwl_priv *priv);
b481de9c 4357
c79dd5b5 4358static void __iwl4965_down(struct iwl_priv *priv)
b481de9c
ZY		 4359{
4360 unsigned long flags;
4361 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
4362 struct ieee80211_conf *conf = NULL;
4363
4364 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
4365
4366 conf = ieee80211_get_hw_conf(priv->hw);
4367
4368 if (!exit_pending)
4369 set_bit(STATUS_EXIT_PENDING, &priv->status);
4370
ab53d8af
MA		 4371 iwl_leds_unregister(priv);
4372
c8381fdc
MA		 4373 iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT);
4374
bf85ea4f 4375 iwlcore_clear_stations_table(priv);
b481de9c
ZY		 4376
4377 /* Unblock any waiting calls */
4378 wake_up_interruptible_all(&priv->wait_command_queue);
4379
b481de9c
ZY		 4380 /* Wipe out the EXIT_PENDING status bit if we are not actually
4381 * exiting the module */
4382 if (!exit_pending)
4383 clear_bit(STATUS_EXIT_PENDING, &priv->status);
4384
4385 /* stop and reset the on-board processor */
3395f6e9 4386 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
b481de9c
ZY		 4387
4388 /* tell the device to stop sending interrupts */
0359facc 4389 spin_lock_irqsave(&priv->lock, flags);
bb8c093b 4390 iwl4965_disable_interrupts(priv);
0359facc
MA		 4391 spin_unlock_irqrestore(&priv->lock, flags);
4392 iwl_synchronize_irq(priv);
b481de9c
ZY		 4393
4394 if (priv->mac80211_registered)
4395 ieee80211_stop_queues(priv->hw);
4396
bb8c093b 4397 /* If we have not previously called iwl4965_init() then
b481de9c 4398 * clear all bits but the RF Kill and SUSPEND bits and return */
fee1247a 4399 if (!iwl_is_init(priv)) {
b481de9c
ZY		 4400 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
4401 STATUS_RF_KILL_HW |
4402 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
4403 STATUS_RF_KILL_SW |
9788864e
RC		 4404 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
4405 STATUS_GEO_CONFIGURED |
b481de9c
ZY		 4406 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
4407 STATUS_IN_SUSPEND;
4408 goto exit;
4409 }
4410
4411 /* ...otherwise clear out all the status bits but the RF Kill and
4412 * SUSPEND bits and continue taking the NIC down. */
4413 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
4414 STATUS_RF_KILL_HW |
4415 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
4416 STATUS_RF_KILL_SW |
9788864e
RC		 4417 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
4418 STATUS_GEO_CONFIGURED |
b481de9c
ZY		 4419 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
4420 STATUS_IN_SUSPEND |
4421 test_bit(STATUS_FW_ERROR, &priv->status) <<
4422 STATUS_FW_ERROR;
4423
4424 spin_lock_irqsave(&priv->lock, flags);
3395f6e9 4425 iwl_clear_bit(priv, CSR_GP_CNTRL,
9fbab516 4426 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
b481de9c
ZY		 4427 spin_unlock_irqrestore(&priv->lock, flags);
4428
bb8c093b
CH		 4429 iwl4965_hw_txq_ctx_stop(priv);
4430 iwl4965_hw_rxq_stop(priv);
b481de9c
ZY		 4431
4432 spin_lock_irqsave(&priv->lock, flags);
3395f6e9
TW		 4433 if (!iwl_grab_nic_access(priv)) {
4434 iwl_write_prph(priv, APMG_CLK_DIS_REG,
b481de9c 4435 APMG_CLK_VAL_DMA_CLK_RQT);
3395f6e9 4436 iwl_release_nic_access(priv);
b481de9c
ZY		 4437 }
4438 spin_unlock_irqrestore(&priv->lock, flags);
4439
4440 udelay(5);
4441
bb8c093b 4442 iwl4965_hw_nic_stop_master(priv);
3395f6e9 4443 iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
bb8c093b 4444 iwl4965_hw_nic_reset(priv);
399f4900 4445 priv->cfg->ops->lib->free_shared_mem(priv);
b481de9c
ZY		 4446
4447 exit:
bb8c093b 4448 memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
b481de9c
ZY		 4449
4450 if (priv->ibss_beacon)
4451 dev_kfree_skb(priv->ibss_beacon);
4452 priv->ibss_beacon = NULL;
4453
4454 /* clear out any free frames */
bb8c093b 4455 iwl4965_clear_free_frames(priv);
b481de9c
ZY		 4456}
4457
c79dd5b5 4458static void iwl4965_down(struct iwl_priv *priv)
b481de9c
ZY		 4459{
4460 mutex_lock(&priv->mutex);
bb8c093b 4461 __iwl4965_down(priv);
b481de9c 4462 mutex_unlock(&priv->mutex);
b24d22b1 4463
bb8c093b 4464 iwl4965_cancel_deferred_work(priv);
b481de9c
ZY		 4465}
4466
4467#define MAX_HW_RESTARTS 5
4468
c79dd5b5 4469static int __iwl4965_up(struct iwl_priv *priv)
b481de9c 4470{
57aab75a
TW		 4471 int i;
4472 int ret;
b481de9c
ZY		 4473
4474 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4475 IWL_WARNING("Exit pending; will not bring the NIC up\n");
4476 return -EIO;
4477 }
4478
4479 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
4480 IWL_WARNING("Radio disabled by SW RF kill (module "
4481 "parameter)\n");
ad97edd2 4482 iwl_rfkill_set_hw_state(priv);
e655b9f0
ZY		 4483 return -ENODEV;
4484 }
4485
e903fbd4
RC		 4486 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
4487 IWL_ERROR("ucode not available for device bringup\n");
4488 return -EIO;
4489 }
4490
e655b9f0 4491 /* If platform's RF_KILL switch is NOT set to KILL */
3395f6e9 4492 if (iwl_read32(priv, CSR_GP_CNTRL) &
e655b9f0
ZY		 4493 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
4494 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4495 else {
4496 set_bit(STATUS_RF_KILL_HW, &priv->status);
4497 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
ad97edd2 4498 iwl_rfkill_set_hw_state(priv);
e655b9f0
ZY		 4499 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
4500 return -ENODEV;
4501 }
b481de9c
ZY		 4502 }
4503
ad97edd2 4504 iwl_rfkill_set_hw_state(priv);
3395f6e9 4505 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
b481de9c 4506
399f4900
RR		 4507 ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
4508 if (ret) {
4509 IWL_ERROR("Unable to allocate shared memory\n");
4510 return ret;
4511 }
4512
1053d35f 4513 ret = iwl_hw_nic_init(priv);
57aab75a
TW		 4514 if (ret) {
4515 IWL_ERROR("Unable to init nic\n");
4516 return ret;
b481de9c
ZY		 4517 }
4518
4519 /* make sure rfkill handshake bits are cleared */
3395f6e9
TW		 4520 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
4521 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
b481de9c
ZY		 4522 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4523
4524 /* clear (again), then enable host interrupts */
3395f6e9 4525 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
bb8c093b 4526 iwl4965_enable_interrupts(priv);
b481de9c
ZY		 4527
4528 /* really make sure rfkill handshake bits are cleared */
3395f6e9
TW		 4529 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
4530 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
b481de9c
ZY		 4531
4532 /* Copy original ucode data image from disk into backup cache.
4533 * This will be used to initialize the on-board processor's
4534 * data SRAM for a clean start when the runtime program first loads. */
4535 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
5a66926a 4536 priv->ucode_data.len);
b481de9c 4537
e655b9f0
ZY		 4538 /* We return success when we resume from suspend and rf_kill is on. */
4539 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
b481de9c 4540 return 0;
b481de9c
ZY		 4541
4542 for (i = 0; i < MAX_HW_RESTARTS; i++) {
4543
bf85ea4f 4544 iwlcore_clear_stations_table(priv);
b481de9c
ZY		 4545
4546 /* load bootstrap state machine,
4547 * load bootstrap program into processor's memory,
4548 * prepare to load the "initialize" uCode */
57aab75a 4549 ret = priv->cfg->ops->lib->load_ucode(priv);
b481de9c 4550
57aab75a
TW		 4551 if (ret) {
4552 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
b481de9c
ZY		 4553 continue;
4554 }
4555
4556 /* start card; "initialize" will load runtime ucode */
bb8c093b 4557 iwl4965_nic_start(priv);
b481de9c 4558
b481de9c
ZY		 4559 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
4560
4561 return 0;
4562 }
4563
4564 set_bit(STATUS_EXIT_PENDING, &priv->status);
bb8c093b 4565 __iwl4965_down(priv);
b481de9c
ZY		 4566
4567 /* tried to restart and config the device for as long as our
4568 * patience could withstand */
4569 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
4570 return -EIO;
4571}
4572
4573
4574/*****************************************************************************
4575 *
4576 * Workqueue callbacks
4577 *
4578 *****************************************************************************/
4579
bb8c093b 4580static void iwl4965_bg_init_alive_start(struct work_struct *data)
b481de9c 4581{
c79dd5b5
TW		 4582 struct iwl_priv *priv =
4583 container_of(data, struct iwl_priv, init_alive_start.work);
b481de9c
ZY		 4584
4585 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4586 return;
4587
4588 mutex_lock(&priv->mutex);
bb8c093b 4589 iwl4965_init_alive_start(priv);
b481de9c
ZY		 4590 mutex_unlock(&priv->mutex);
4591}
4592
bb8c093b 4593static void iwl4965_bg_alive_start(struct work_struct *data)
b481de9c 4594{
c79dd5b5
TW		 4595 struct iwl_priv *priv =
4596 container_of(data, struct iwl_priv, alive_start.work);
b481de9c
ZY		 4597
4598 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4599 return;
4600
4601 mutex_lock(&priv->mutex);
bb8c093b 4602 iwl4965_alive_start(priv);
b481de9c
ZY		 4603 mutex_unlock(&priv->mutex);
4604}
4605
bb8c093b 4606static void iwl4965_bg_rf_kill(struct work_struct *work)
b481de9c 4607{
c79dd5b5 4608 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
b481de9c
ZY		 4609
4610 wake_up_interruptible(&priv->wait_command_queue);
4611
4612 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4613 return;
4614
4615 mutex_lock(&priv->mutex);
4616
fee1247a 4617 if (!iwl_is_rfkill(priv)) {
b481de9c
ZY		 4618 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
4619 "HW and/or SW RF Kill no longer active, restarting "
4620 "device\n");
4621 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
4622 queue_work(priv->workqueue, &priv->restart);
4623 } else {
ad97edd2
MA		 4624 /* make sure mac80211 stop sending Tx frame */
4625 if (priv->mac80211_registered)
4626 ieee80211_stop_queues(priv->hw);
b481de9c
ZY		 4627
4628 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
4629 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
4630 "disabled by SW switch\n");
4631 else
4632 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
4633 "Kill switch must be turned off for "
4634 "wireless networking to work.\n");
4635 }
ad97edd2
MA		 4636 iwl_rfkill_set_hw_state(priv);
4637
b481de9c
ZY		 4638 mutex_unlock(&priv->mutex);
4639}
4640
4641#define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
4642
bb8c093b 4643static void iwl4965_bg_scan_check(struct work_struct *data)
b481de9c 4644{
c79dd5b5
TW		 4645 struct iwl_priv *priv =
4646 container_of(data, struct iwl_priv, scan_check.work);
b481de9c
ZY		 4647
4648 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4649 return;
4650
4651 mutex_lock(&priv->mutex);
4652 if (test_bit(STATUS_SCANNING, &priv->status) ||
4653 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
4654 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
4655 "Scan completion watchdog resetting adapter (%dms)\n",
4656 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
052c4b9f 4657
b481de9c 4658 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
bb8c093b 4659 iwl4965_send_scan_abort(priv);
b481de9c
ZY		 4660 }
4661 mutex_unlock(&priv->mutex);
4662}
4663
bb8c093b 4664static void iwl4965_bg_request_scan(struct work_struct *data)
b481de9c 4665{
c79dd5b5
TW		 4666 struct iwl_priv *priv =
4667 container_of(data, struct iwl_priv, request_scan);
857485c0 4668 struct iwl_host_cmd cmd = {
b481de9c 4669 .id = REPLY_SCAN_CMD,
bb8c093b 4670 .len = sizeof(struct iwl4965_scan_cmd),
b481de9c
ZY		 4671 .meta.flags = CMD_SIZE_HUGE,
4672 };
bb8c093b 4673 struct iwl4965_scan_cmd *scan;
b481de9c 4674 struct ieee80211_conf *conf = NULL;
78330fdd 4675 u16 cmd_len;
8318d78a 4676 enum ieee80211_band band;
78330fdd 4677 u8 direct_mask;
857485c0 4678 int ret = 0;
b481de9c
ZY		 4679
4680 conf = ieee80211_get_hw_conf(priv->hw);
4681
4682 mutex_lock(&priv->mutex);
4683
fee1247a 4684 if (!iwl_is_ready(priv)) {
b481de9c
ZY		 4685 IWL_WARNING("request scan called when driver not ready.\n");
4686 goto done;
4687 }
4688
4689 /* Make sure the scan wasn't cancelled before this queued work
4690 * was given the chance to run... */
4691 if (!test_bit(STATUS_SCANNING, &priv->status))
4692 goto done;
4693
4694 /* This should never be called or scheduled if there is currently
4695 * a scan active in the hardware. */
4696 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
4697 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
4698 "Ignoring second request.\n");
857485c0 4699 ret = -EIO;
b481de9c
ZY		 4700 goto done;
4701 }
4702
4703 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4704 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
4705 goto done;
4706 }
4707
4708 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
4709 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
4710 goto done;
4711 }
4712
fee1247a 4713 if (iwl_is_rfkill(priv)) {
b481de9c
ZY		 4714 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
4715 goto done;
4716 }
4717
4718 if (!test_bit(STATUS_READY, &priv->status)) {
4719 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
4720 goto done;
4721 }
4722
4723 if (!priv->scan_bands) {
4724 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
4725 goto done;
4726 }
4727
4728 if (!priv->scan) {
bb8c093b 4729 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
b481de9c
ZY		 4730 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
4731 if (!priv->scan) {
857485c0 4732 ret = -ENOMEM;
b481de9c
ZY		 4733 goto done;
4734 }
4735 }
4736 scan = priv->scan;
bb8c093b 4737 memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
b481de9c
ZY		 4738
4739 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
4740 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
4741
3109ece1 4742 if (iwl_is_associated(priv)) {
b481de9c
ZY		 4743 u16 interval = 0;
4744 u32 extra;
4745 u32 suspend_time = 100;
4746 u32 scan_suspend_time = 100;
4747 unsigned long flags;
4748
4749 IWL_DEBUG_INFO("Scanning while associated...\n");
4750
4751 spin_lock_irqsave(&priv->lock, flags);
4752 interval = priv->beacon_int;
4753 spin_unlock_irqrestore(&priv->lock, flags);
4754
4755 scan->suspend_time = 0;
052c4b9f 4756 scan->max_out_time = cpu_to_le32(200 * 1024);
b481de9c
ZY		 4757 if (!interval)
4758 interval = suspend_time;
4759
4760 extra = (suspend_time / interval) << 22;
4761 scan_suspend_time = (extra |
4762 ((suspend_time % interval) * 1024));
4763 scan->suspend_time = cpu_to_le32(scan_suspend_time);
4764 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
4765 scan_suspend_time, interval);
4766 }
4767
4768 /* We should add the ability for user to lock to PASSIVE ONLY */
4769 if (priv->one_direct_scan) {
4770 IWL_DEBUG_SCAN
4771 ("Kicking off one direct scan for '%s'\n",
bb8c093b 4772 iwl4965_escape_essid(priv->direct_ssid,
b481de9c
ZY		 4773 priv->direct_ssid_len));
4774 scan->direct_scan[0].id = WLAN_EID_SSID;
4775 scan->direct_scan[0].len = priv->direct_ssid_len;
4776 memcpy(scan->direct_scan[0].ssid,
4777 priv->direct_ssid, priv->direct_ssid_len);
4778 direct_mask = 1;
3109ece1 4779 } else if (!iwl_is_associated(priv) && priv->essid_len) {
786b4557
BM		 4780 IWL_DEBUG_SCAN
4781 ("Kicking off one direct scan for '%s' when not associated\n",
4782 iwl4965_escape_essid(priv->essid, priv->essid_len));
b481de9c
ZY		 4783 scan->direct_scan[0].id = WLAN_EID_SSID;
4784 scan->direct_scan[0].len = priv->essid_len;
4785 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
4786 direct_mask = 1;
857485c0 4787 } else {
786b4557 4788 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
b481de9c 4789 direct_mask = 0;
857485c0 4790 }
b481de9c 4791
b481de9c 4792 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
5425e490 4793 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
b481de9c
ZY		 4794 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
4795
b481de9c
ZY		 4796
4797 switch (priv->scan_bands) {
4798 case 2:
4799 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
4800 scan->tx_cmd.rate_n_flags =
bb8c093b 4801 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
b481de9c
ZY		 4802 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
4803
4804 scan->good_CRC_th = 0;
8318d78a 4805 band = IEEE80211_BAND_2GHZ;
b481de9c
ZY		 4806 break;
4807
4808 case 1:
4809 scan->tx_cmd.rate_n_flags =
bb8c093b 4810 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
b481de9c
ZY		 4811 RATE_MCS_ANT_B_MSK);
4812 scan->good_CRC_th = IWL_GOOD_CRC_TH;
8318d78a 4813 band = IEEE80211_BAND_5GHZ;
b481de9c
ZY		 4814 break;
4815
4816 default:
4817 IWL_WARNING("Invalid scan band count\n");
4818 goto done;
4819 }
4820
78330fdd
TW		 4821 /* We don't build a direct scan probe request; the uCode will do
4822 * that based on the direct_mask added to each channel entry */
4823 cmd_len = iwl4965_fill_probe_req(priv, band,
4824 (struct ieee80211_mgmt *)scan->data,
4825 IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
4826
4827 scan->tx_cmd.len = cpu_to_le16(cmd_len);
b481de9c
ZY		 4828 /* select Rx chains */
4829
4830 /* Force use of chains B and C (0x6) for scan Rx.
4831 * Avoid A (0x1) because of its off-channel reception on A-band.
4832 * MIMO is not used here, but value is required to make uCode happy. */
4833 scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
4834 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
4835 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
4836 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
4837
4838 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
4839 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
4840
786b4557 4841 if (direct_mask)
26c0f03f
RC		 4842 scan->channel_count =
4843 iwl4965_get_channels_for_scan(
4844 priv, band, 1, /* active */
4845 direct_mask,
4846 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
786b4557 4847 else
26c0f03f
RC		 4848 scan->channel_count =
4849 iwl4965_get_channels_for_scan(
4850 priv, band, 0, /* passive */
4851 direct_mask,
4852 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
b481de9c 4853
5da4b55f
MA		 4854 scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK |
4855 RXON_FILTER_BCON_AWARE_MSK);
b481de9c 4856 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
bb8c093b 4857 scan->channel_count * sizeof(struct iwl4965_scan_channel);
b481de9c
ZY		 4858 cmd.data = scan;
4859 scan->len = cpu_to_le16(cmd.len);
4860
4861 set_bit(STATUS_SCAN_HW, &priv->status);
857485c0
TW		 4862 ret = iwl_send_cmd_sync(priv, &cmd);
4863 if (ret)
b481de9c
ZY		 4864 goto done;
4865
4866 queue_delayed_work(priv->workqueue, &priv->scan_check,
4867 IWL_SCAN_CHECK_WATCHDOG);
4868
4869 mutex_unlock(&priv->mutex);
4870 return;
4871
4872 done:
01ebd063 4873 /* inform mac80211 scan aborted */
b481de9c
ZY		 4874 queue_work(priv->workqueue, &priv->scan_completed);
4875 mutex_unlock(&priv->mutex);
4876}
4877
bb8c093b 4878static void iwl4965_bg_up(struct work_struct *data)
b481de9c 4879{
c79dd5b5 4880 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
b481de9c
ZY		 4881
4882 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4883 return;
4884
4885 mutex_lock(&priv->mutex);
bb8c093b 4886 __iwl4965_up(priv);
b481de9c
ZY		 4887 mutex_unlock(&priv->mutex);
4888}
4889
bb8c093b 4890static void iwl4965_bg_restart(struct work_struct *data)
b481de9c 4891{
c79dd5b5 4892 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
b481de9c
ZY		 4893
4894 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4895 return;
4896
bb8c093b 4897 iwl4965_down(priv);
b481de9c
ZY		 4898 queue_work(priv->workqueue, &priv->up);
4899}
4900
bb8c093b 4901static void iwl4965_bg_rx_replenish(struct work_struct *data)
b481de9c 4902{
c79dd5b5
TW		 4903 struct iwl_priv *priv =
4904 container_of(data, struct iwl_priv, rx_replenish);
b481de9c
ZY		 4905
4906 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4907 return;
4908
4909 mutex_lock(&priv->mutex);
a55360e4 4910 iwl_rx_replenish(priv);
b481de9c
ZY		 4911 mutex_unlock(&priv->mutex);
4912}
4913
7878a5a4
MA		 4914#define IWL_DELAY_NEXT_SCAN (HZ*2)
4915
508e32e1 4916static void iwl4965_post_associate(struct iwl_priv *priv)
b481de9c 4917{
b481de9c 4918 struct ieee80211_conf *conf = NULL;
857485c0 4919 int ret = 0;
0795af57 4920 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 4921
4922 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
4923 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
4924 return;
4925 }
4926
0795af57
JP		 4927 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
4928 priv->assoc_id,
4929 print_mac(mac, priv->active_rxon.bssid_addr));
b481de9c
ZY		 4930
4931
4932 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4933 return;
4934
b481de9c 4935
508e32e1 4936 if (!priv->vif || !priv->is_open)
948c171c 4937 return;
508e32e1 4938
bb8c093b 4939 iwl4965_scan_cancel_timeout(priv, 200);
052c4b9f 4940
b481de9c
ZY		 4941 conf = ieee80211_get_hw_conf(priv->hw);
4942
4943 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
bb8c093b 4944 iwl4965_commit_rxon(priv);
b481de9c 4945
bb8c093b
CH		 4946 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
4947 iwl4965_setup_rxon_timing(priv);
857485c0 4948 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
b481de9c 4949 sizeof(priv->rxon_timing), &priv->rxon_timing);
857485c0 4950 if (ret)
b481de9c
ZY		 4951 IWL_WARNING("REPLY_RXON_TIMING failed - "
4952 "Attempting to continue.\n");
4953
4954 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
4955
c8b0e6e1 4956#ifdef CONFIG_IWL4965_HT
fd105e79 4957 if (priv->current_ht_config.is_ht)
47c5196e 4958 iwl_set_rxon_ht(priv, &priv->current_ht_config);
c8b0e6e1 4959#endif /* CONFIG_IWL4965_HT*/
c7de35cd 4960 iwl_set_rxon_chain(priv);
b481de9c
ZY		 4961 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
4962
4963 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
4964 priv->assoc_id, priv->beacon_int);
4965
4966 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
4967 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
4968 else
4969 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
4970
4971 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
4972 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
4973 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
4974 else
4975 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
4976
4977 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
4978 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
4979
4980 }
4981
bb8c093b 4982 iwl4965_commit_rxon(priv);
b481de9c
ZY		 4983
4984 switch (priv->iw_mode) {
4985 case IEEE80211_IF_TYPE_STA:
bb8c093b 4986 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
b481de9c
ZY		 4987 break;
4988
4989 case IEEE80211_IF_TYPE_IBSS:
4990
4991 /* clear out the station table */
bf85ea4f 4992 iwlcore_clear_stations_table(priv);
b481de9c 4993
bb8c093b
CH		 4994 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
4995 iwl4965_rxon_add_station(priv, priv->bssid, 0);
4996 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
4997 iwl4965_send_beacon_cmd(priv);
b481de9c
ZY		 4998
4999 break;
5000
5001 default:
5002 IWL_ERROR("%s Should not be called in %d mode\n",
5003 __FUNCTION__, priv->iw_mode);
5004 break;
5005 }
5006
bb8c093b 5007 iwl4965_sequence_reset(priv);
b481de9c 5008
b481de9c 5009 /* Enable Rx differential gain and sensitivity calibrations */
f0832f13 5010 iwl_chain_noise_reset(priv);
b481de9c 5011 priv->start_calib = 1;
b481de9c
ZY		 5012
5013 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
5014 priv->assoc_station_added = 1;
5015
bb8c093b 5016 iwl4965_activate_qos(priv, 0);
292ae174 5017
5da4b55f 5018 iwl_power_update_mode(priv, 0);
7878a5a4
MA		 5019 /* we have just associated, don't start scan too early */
5020 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
508e32e1
RC		 5021}
5022
5023
5024static void iwl4965_bg_post_associate(struct work_struct *data)
5025{
5026 struct iwl_priv *priv = container_of(data, struct iwl_priv,
5027 post_associate.work);
5028
5029 mutex_lock(&priv->mutex);
5030 iwl4965_post_associate(priv);
b481de9c 5031 mutex_unlock(&priv->mutex);
508e32e1 5032
b481de9c
ZY		 5033}
5034
bb8c093b 5035static void iwl4965_bg_abort_scan(struct work_struct *work)
b481de9c 5036{
c79dd5b5 5037 struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
b481de9c 5038
fee1247a 5039 if (!iwl_is_ready(priv))
b481de9c
ZY		 5040 return;
5041
5042 mutex_lock(&priv->mutex);
5043
5044 set_bit(STATUS_SCAN_ABORTING, &priv->status);
bb8c093b 5045 iwl4965_send_scan_abort(priv);
b481de9c
ZY		 5046
5047 mutex_unlock(&priv->mutex);
5048}
5049
76bb77e0
ZY		 5050static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
5051
bb8c093b 5052static void iwl4965_bg_scan_completed(struct work_struct *work)
b481de9c 5053{
c79dd5b5
TW		 5054 struct iwl_priv *priv =
5055 container_of(work, struct iwl_priv, scan_completed);
b481de9c
ZY		 5056
5057 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
5058
5059 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5060 return;
5061
a0646470
ZY		 5062 if (test_bit(STATUS_CONF_PENDING, &priv->status))
5063 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
76bb77e0 5064
b481de9c
ZY		 5065 ieee80211_scan_completed(priv->hw);
5066
5067 /* Since setting the TXPOWER may have been deferred while
5068 * performing the scan, fire one off */
5069 mutex_lock(&priv->mutex);
bb8c093b 5070 iwl4965_hw_reg_send_txpower(priv);
b481de9c
ZY		 5071 mutex_unlock(&priv->mutex);
5072}
5073
5074/*****************************************************************************
5075 *
5076 * mac80211 entry point functions
5077 *
5078 *****************************************************************************/
5079
5a66926a
ZY		 5080#define UCODE_READY_TIMEOUT (2 * HZ)
5081
bb8c093b 5082static int iwl4965_mac_start(struct ieee80211_hw *hw)
b481de9c 5083{
c79dd5b5 5084 struct iwl_priv *priv = hw->priv;
5a66926a 5085 int ret;
b481de9c
ZY		 5086
5087 IWL_DEBUG_MAC80211("enter\n");
5088
5a66926a
ZY		 5089 if (pci_enable_device(priv->pci_dev)) {
5090 IWL_ERROR("Fail to pci_enable_device\n");
5091 return -ENODEV;
5092 }
5093 pci_restore_state(priv->pci_dev);
5094 pci_enable_msi(priv->pci_dev);
5095
5096 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
5097 DRV_NAME, priv);
5098 if (ret) {
5099 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
5100 goto out_disable_msi;
5101 }
5102
b481de9c
ZY		 5103 /* we should be verifying the device is ready to be opened */
5104 mutex_lock(&priv->mutex);
5105
5a66926a
ZY		 5106 memset(&priv->staging_rxon, 0, sizeof(struct iwl4965_rxon_cmd));
5107 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
5108 * ucode filename and max sizes are card-specific. */
b481de9c 5109
5a66926a
ZY		 5110 if (!priv->ucode_code.len) {
5111 ret = iwl4965_read_ucode(priv);
5112 if (ret) {
5113 IWL_ERROR("Could not read microcode: %d\n", ret);
5114 mutex_unlock(&priv->mutex);
5115 goto out_release_irq;
5116 }
5117 }
b481de9c 5118
e655b9f0 5119 ret = __iwl4965_up(priv);
5a66926a 5120
b481de9c 5121 mutex_unlock(&priv->mutex);
5a66926a 5122
e655b9f0
ZY		 5123 if (ret)
5124 goto out_release_irq;
5125
5126 IWL_DEBUG_INFO("Start UP work done.\n");
5127
5128 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
5129 return 0;
5130
5a66926a
ZY		 5131 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
5132 * mac80211 will not be run successfully. */
5133 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
5134 test_bit(STATUS_READY, &priv->status),
5135 UCODE_READY_TIMEOUT);
5136 if (!ret) {
5137 if (!test_bit(STATUS_READY, &priv->status)) {
5138 IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
5139 jiffies_to_msecs(UCODE_READY_TIMEOUT));
5140 ret = -ETIMEDOUT;
5141 goto out_release_irq;
5142 }
5143 }
5144
e655b9f0 5145 priv->is_open = 1;
b481de9c
ZY		 5146 IWL_DEBUG_MAC80211("leave\n");
5147 return 0;
5a66926a
ZY		 5148
5149out_release_irq:
5150 free_irq(priv->pci_dev->irq, priv);
5151out_disable_msi:
5152 pci_disable_msi(priv->pci_dev);
e655b9f0
ZY		 5153 pci_disable_device(priv->pci_dev);
5154 priv->is_open = 0;
5155 IWL_DEBUG_MAC80211("leave - failed\n");
5a66926a 5156 return ret;
b481de9c
ZY		 5157}
5158
bb8c093b 5159static void iwl4965_mac_stop(struct ieee80211_hw *hw)
b481de9c 5160{
c79dd5b5 5161 struct iwl_priv *priv = hw->priv;
b481de9c
ZY		 5162
5163 IWL_DEBUG_MAC80211("enter\n");
948c171c 5164
e655b9f0
ZY		 5165 if (!priv->is_open) {
5166 IWL_DEBUG_MAC80211("leave - skip\n");
5167 return;
5168 }
5169
b481de9c 5170 priv->is_open = 0;
5a66926a 5171
fee1247a 5172 if (iwl_is_ready_rf(priv)) {
e655b9f0
ZY		 5173 /* stop mac, cancel any scan request and clear
5174 * RXON_FILTER_ASSOC_MSK BIT
5175 */
5a66926a
ZY		 5176 mutex_lock(&priv->mutex);
5177 iwl4965_scan_cancel_timeout(priv, 100);
5178 cancel_delayed_work(&priv->post_associate);
fde3571f 5179 mutex_unlock(&priv->mutex);
fde3571f
MA		 5180 }
5181
5a66926a
ZY		 5182 iwl4965_down(priv);
5183
5184 flush_workqueue(priv->workqueue);
5185 free_irq(priv->pci_dev->irq, priv);
5186 pci_disable_msi(priv->pci_dev);
5187 pci_save_state(priv->pci_dev);
5188 pci_disable_device(priv->pci_dev);
948c171c 5189
b481de9c 5190 IWL_DEBUG_MAC80211("leave\n");
b481de9c
ZY		 5191}
5192
bb8c093b 5193static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
b481de9c
ZY		 5194 struct ieee80211_tx_control *ctl)
5195{
c79dd5b5 5196 struct iwl_priv *priv = hw->priv;
b481de9c
ZY		 5197
5198 IWL_DEBUG_MAC80211("enter\n");
5199
5200 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
5201 IWL_DEBUG_MAC80211("leave - monitor\n");
5202 return -1;
5203 }
5204
5205 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
8318d78a 5206 ctl->tx_rate->bitrate);
b481de9c 5207
bb8c093b 5208 if (iwl4965_tx_skb(priv, skb, ctl))
b481de9c
ZY		 5209 dev_kfree_skb_any(skb);
5210
5211 IWL_DEBUG_MAC80211("leave\n");
5212 return 0;
5213}
5214
bb8c093b 5215static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
b481de9c
ZY		 5216 struct ieee80211_if_init_conf *conf)
5217{
c79dd5b5 5218 struct iwl_priv *priv = hw->priv;
b481de9c 5219 unsigned long flags;
0795af57 5220 DECLARE_MAC_BUF(mac);
b481de9c 5221
32bfd35d 5222 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
b481de9c 5223
32bfd35d
JB		 5224 if (priv->vif) {
5225 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
75849d28 5226 return -EOPNOTSUPP;
b481de9c
ZY		 5227 }
5228
5229 spin_lock_irqsave(&priv->lock, flags);
32bfd35d 5230 priv->vif = conf->vif;
b481de9c
ZY		 5231
5232 spin_unlock_irqrestore(&priv->lock, flags);
5233
5234 mutex_lock(&priv->mutex);
864792e3
TW		 5235
5236 if (conf->mac_addr) {
5237 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
5238 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
5239 }
b481de9c 5240
fee1247a 5241 if (iwl_is_ready(priv))
5a66926a
ZY		 5242 iwl4965_set_mode(priv, conf->type);
5243
b481de9c
ZY		 5244 mutex_unlock(&priv->mutex);
5245
5a66926a 5246 IWL_DEBUG_MAC80211("leave\n");
b481de9c
ZY		 5247 return 0;
5248}
5249
5250/**
bb8c093b 5251 * iwl4965_mac_config - mac80211 config callback
b481de9c
ZY		 5252 *
5253 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
5254 * be set inappropriately and the driver currently sets the hardware up to
5255 * use it whenever needed.
5256 */
bb8c093b 5257static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
b481de9c 5258{
c79dd5b5 5259 struct iwl_priv *priv = hw->priv;
bf85ea4f 5260 const struct iwl_channel_info *ch_info;
b481de9c 5261 unsigned long flags;
76bb77e0 5262 int ret = 0;
b481de9c
ZY		 5263
5264 mutex_lock(&priv->mutex);
8318d78a 5265 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
b481de9c 5266
12342c47
ZY		 5267 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
5268
fee1247a 5269 if (!iwl_is_ready(priv)) {
b481de9c 5270 IWL_DEBUG_MAC80211("leave - not ready\n");
76bb77e0
ZY		 5271 ret = -EIO;
5272 goto out;
b481de9c
ZY		 5273 }
5274
1ea87396 5275 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
b481de9c 5276 test_bit(STATUS_SCANNING, &priv->status))) {
a0646470
ZY		 5277 IWL_DEBUG_MAC80211("leave - scanning\n");
5278 set_bit(STATUS_CONF_PENDING, &priv->status);
b481de9c 5279 mutex_unlock(&priv->mutex);
a0646470 5280 return 0;
b481de9c
ZY		 5281 }
5282
5283 spin_lock_irqsave(&priv->lock, flags);
5284
8622e705 5285 ch_info = iwl_get_channel_info(priv, conf->channel->band,
8318d78a 5286 ieee80211_frequency_to_channel(conf->channel->center_freq));
b481de9c 5287 if (!is_channel_valid(ch_info)) {
b481de9c
ZY		 5288 IWL_DEBUG_MAC80211("leave - invalid channel\n");
5289 spin_unlock_irqrestore(&priv->lock, flags);
76bb77e0
ZY		 5290 ret = -EINVAL;
5291 goto out;
b481de9c
ZY		 5292 }
5293
c8b0e6e1 5294#ifdef CONFIG_IWL4965_HT
78330fdd 5295 /* if we are switching from ht to 2.4 clear flags
b481de9c
ZY		 5296 * from any ht related info since 2.4 does not
5297 * support ht */
78330fdd 5298 if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
b481de9c
ZY		 5299#ifdef IEEE80211_CONF_CHANNEL_SWITCH
5300 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
5301#endif
5302 )
5303 priv->staging_rxon.flags = 0;
c8b0e6e1 5304#endif /* CONFIG_IWL4965_HT */
b481de9c 5305
c7de35cd 5306 iwl_set_rxon_channel(priv, conf->channel->band,
8318d78a 5307 ieee80211_frequency_to_channel(conf->channel->center_freq));
b481de9c 5308
8318d78a 5309 iwl4965_set_flags_for_phymode(priv, conf->channel->band);
b481de9c
ZY		 5310
5311 /* The list of supported rates and rate mask can be different
8318d78a 5312 * for each band; since the band may have changed, reset
b481de9c 5313 * the rate mask to what mac80211 lists */
bb8c093b 5314 iwl4965_set_rate(priv);
b481de9c
ZY		 5315
5316 spin_unlock_irqrestore(&priv->lock, flags);
5317
5318#ifdef IEEE80211_CONF_CHANNEL_SWITCH
5319 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
bb8c093b 5320 iwl4965_hw_channel_switch(priv, conf->channel);
76bb77e0 5321 goto out;
b481de9c
ZY		 5322 }
5323#endif
5324
ad97edd2
MA		 5325 if (priv->cfg->ops->lib->radio_kill_sw)
5326 priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled);
b481de9c
ZY		 5327
5328 if (!conf->radio_enabled) {
5329 IWL_DEBUG_MAC80211("leave - radio disabled\n");
76bb77e0 5330 goto out;
b481de9c
ZY		 5331 }
5332
fee1247a 5333 if (iwl_is_rfkill(priv)) {
b481de9c 5334 IWL_DEBUG_MAC80211("leave - RF kill\n");
76bb77e0
ZY		 5335 ret = -EIO;
5336 goto out;
b481de9c
ZY		 5337 }
5338
bb8c093b 5339 iwl4965_set_rate(priv);
b481de9c
ZY		 5340
5341 if (memcmp(&priv->active_rxon,
5342 &priv->staging_rxon, sizeof(priv->staging_rxon)))
bb8c093b 5343 iwl4965_commit_rxon(priv);
b481de9c
ZY		 5344 else
5345 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
5346
5347 IWL_DEBUG_MAC80211("leave\n");
5348
a0646470
ZY		 5349out:
5350 clear_bit(STATUS_CONF_PENDING, &priv->status);
5a66926a 5351 mutex_unlock(&priv->mutex);
76bb77e0 5352 return ret;
b481de9c
ZY		 5353}
5354
c79dd5b5 5355static void iwl4965_config_ap(struct iwl_priv *priv)
b481de9c 5356{
857485c0 5357 int ret = 0;
b481de9c 5358
d986bcd1 5359 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
b481de9c
ZY		 5360 return;
5361
5362 /* The following should be done only at AP bring up */
5363 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
5364
5365 /* RXON - unassoc (to set timing command) */
5366 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
bb8c093b 5367 iwl4965_commit_rxon(priv);
b481de9c
ZY		 5368
5369 /* RXON Timing */
bb8c093b
CH		 5370 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
5371 iwl4965_setup_rxon_timing(priv);
857485c0 5372 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
b481de9c 5373 sizeof(priv->rxon_timing), &priv->rxon_timing);
857485c0 5374 if (ret)
b481de9c
ZY		 5375 IWL_WARNING("REPLY_RXON_TIMING failed - "
5376 "Attempting to continue.\n");
5377
c7de35cd 5378 iwl_set_rxon_chain(priv);
b481de9c
ZY		 5379
5380 /* FIXME: what should be the assoc_id for AP? */
5381 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
5382 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
5383 priv->staging_rxon.flags |=
5384 RXON_FLG_SHORT_PREAMBLE_MSK;
5385 else
5386 priv->staging_rxon.flags &=
5387 ~RXON_FLG_SHORT_PREAMBLE_MSK;
5388
5389 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
5390 if (priv->assoc_capability &
5391 WLAN_CAPABILITY_SHORT_SLOT_TIME)
5392 priv->staging_rxon.flags |=
5393 RXON_FLG_SHORT_SLOT_MSK;
5394 else
5395 priv->staging_rxon.flags &=
5396 ~RXON_FLG_SHORT_SLOT_MSK;
5397
5398 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
5399 priv->staging_rxon.flags &=
5400 ~RXON_FLG_SHORT_SLOT_MSK;
5401 }
5402 /* restore RXON assoc */
5403 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
bb8c093b 5404 iwl4965_commit_rxon(priv);
bb8c093b 5405 iwl4965_activate_qos(priv, 1);
bb8c093b 5406 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
e1493deb 5407 }
bb8c093b 5408 iwl4965_send_beacon_cmd(priv);
b481de9c
ZY		 5409
5410 /* FIXME - we need to add code here to detect a totally new
5411 * configuration, reset the AP, unassoc, rxon timing, assoc,
5412 * clear sta table, add BCAST sta... */
5413}
5414
32bfd35d
JB		 5415static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
5416 struct ieee80211_vif *vif,
b481de9c
ZY		 5417 struct ieee80211_if_conf *conf)
5418{
c79dd5b5 5419 struct iwl_priv *priv = hw->priv;
0795af57 5420 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 5421 unsigned long flags;
5422 int rc;
5423
5424 if (conf == NULL)
5425 return -EIO;
5426
b716bb91
EG		 5427 if (priv->vif != vif) {
5428 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
b716bb91
EG		 5429 return 0;
5430 }
5431
b481de9c
ZY		 5432 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
5433 (!conf->beacon || !conf->ssid_len)) {
5434 IWL_DEBUG_MAC80211
5435 ("Leaving in AP mode because HostAPD is not ready.\n");
5436 return 0;
5437 }
5438
fee1247a 5439 if (!iwl_is_alive(priv))
5a66926a
ZY		 5440 return -EAGAIN;
5441
b481de9c
ZY		 5442 mutex_lock(&priv->mutex);
5443
b481de9c 5444 if (conf->bssid)
0795af57
JP		 5445 IWL_DEBUG_MAC80211("bssid: %s\n",
5446 print_mac(mac, conf->bssid));
b481de9c 5447
4150c572
JB		 5448/*
5449 * very dubious code was here; the probe filtering flag is never set:
5450 *
b481de9c
ZY		 5451 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
5452 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
4150c572 5453 */
b481de9c
ZY		 5454
5455 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
5456 if (!conf->bssid) {
5457 conf->bssid = priv->mac_addr;
5458 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
0795af57
JP		 5459 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
5460 print_mac(mac, conf->bssid));
b481de9c
ZY		 5461 }
5462 if (priv->ibss_beacon)
5463 dev_kfree_skb(priv->ibss_beacon);
5464
5465 priv->ibss_beacon = conf->beacon;
5466 }
5467
fee1247a 5468 if (iwl_is_rfkill(priv))
fde3571f
MA		 5469 goto done;
5470
b481de9c
ZY		 5471 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
5472 !is_multicast_ether_addr(conf->bssid)) {
5473 /* If there is currently a HW scan going on in the background
5474 * then we need to cancel it else the RXON below will fail. */
bb8c093b 5475 if (iwl4965_scan_cancel_timeout(priv, 100)) {
b481de9c
ZY		 5476 IWL_WARNING("Aborted scan still in progress "
5477 "after 100ms\n");
5478 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
5479 mutex_unlock(&priv->mutex);
5480 return -EAGAIN;
5481 }
5482 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
5483
5484 /* TODO: Audit driver for usage of these members and see
5485 * if mac80211 deprecates them (priv->bssid looks like it
5486 * shouldn't be there, but I haven't scanned the IBSS code
5487 * to verify) - jpk */
5488 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
5489
5490 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
bb8c093b 5491 iwl4965_config_ap(priv);
b481de9c 5492 else {
bb8c093b 5493 rc = iwl4965_commit_rxon(priv);
b481de9c 5494 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
bb8c093b 5495 iwl4965_rxon_add_station(
b481de9c
ZY		 5496 priv, priv->active_rxon.bssid_addr, 1);
5497 }
5498
5499 } else {
bb8c093b 5500 iwl4965_scan_cancel_timeout(priv, 100);
b481de9c 5501 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
bb8c093b 5502 iwl4965_commit_rxon(priv);
b481de9c
ZY		 5503 }
5504
fde3571f 5505 done:
b481de9c
ZY		 5506 spin_lock_irqsave(&priv->lock, flags);
5507 if (!conf->ssid_len)
5508 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
5509 else
5510 memcpy(priv->essid, conf->ssid, conf->ssid_len);
5511
5512 priv->essid_len = conf->ssid_len;
5513 spin_unlock_irqrestore(&priv->lock, flags);
5514
5515 IWL_DEBUG_MAC80211("leave\n");
5516 mutex_unlock(&priv->mutex);
5517
5518 return 0;
5519}
5520
bb8c093b 5521static void iwl4965_configure_filter(struct ieee80211_hw *hw,
4150c572
JB		 5522 unsigned int changed_flags,
5523 unsigned int *total_flags,
5524 int mc_count, struct dev_addr_list *mc_list)
5525{
5526 /*
5527 * XXX: dummy
bb8c093b 5528 * see also iwl4965_connection_init_rx_config
4150c572
JB		 5529 */
5530 *total_flags = 0;
5531}
5532
bb8c093b 5533static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
b481de9c
ZY		 5534 struct ieee80211_if_init_conf *conf)
5535{
c79dd5b5 5536 struct iwl_priv *priv = hw->priv;
b481de9c
ZY		 5537
5538 IWL_DEBUG_MAC80211("enter\n");
5539
5540 mutex_lock(&priv->mutex);
948c171c 5541
fee1247a 5542 if (iwl_is_ready_rf(priv)) {
fde3571f
MA		 5543 iwl4965_scan_cancel_timeout(priv, 100);
5544 cancel_delayed_work(&priv->post_associate);
5545 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5546 iwl4965_commit_rxon(priv);
5547 }
32bfd35d
JB		 5548 if (priv->vif == conf->vif) {
5549 priv->vif = NULL;
b481de9c
ZY		 5550 memset(priv->bssid, 0, ETH_ALEN);
5551 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
5552 priv->essid_len = 0;
5553 }
5554 mutex_unlock(&priv->mutex);
5555
5556 IWL_DEBUG_MAC80211("leave\n");
5557
5558}
471b3efd 5559
3109ece1 5560#define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
471b3efd
JB		 5561static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
5562 struct ieee80211_vif *vif,
5563 struct ieee80211_bss_conf *bss_conf,
5564 u32 changes)
220173b0 5565{
c79dd5b5 5566 struct iwl_priv *priv = hw->priv;
220173b0 5567
3109ece1
TW		 5568 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
5569
471b3efd 5570 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3109ece1
TW		 5571 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
5572 bss_conf->use_short_preamble);
471b3efd 5573 if (bss_conf->use_short_preamble)
220173b0
TW		 5574 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
5575 else
5576 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
5577 }
5578
471b3efd 5579 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3109ece1 5580 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
8318d78a 5581 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
220173b0
TW		 5582 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
5583 else
5584 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
5585 }
5586
98952d5d 5587 if (changes & BSS_CHANGED_HT) {
3109ece1 5588 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
98952d5d 5589 iwl4965_ht_conf(priv, bss_conf);
c7de35cd 5590 iwl_set_rxon_chain(priv);
98952d5d
TW		 5591 }
5592
471b3efd 5593 if (changes & BSS_CHANGED_ASSOC) {
3109ece1 5594 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
508e32e1
RC		 5595 /* This should never happen as this function should
5596 * never be called from interrupt context. */
5597 if (WARN_ON_ONCE(in_interrupt()))
5598 return;
3109ece1
TW		 5599 if (bss_conf->assoc) {
5600 priv->assoc_id = bss_conf->aid;
5601 priv->beacon_int = bss_conf->beacon_int;
5602 priv->timestamp = bss_conf->timestamp;
5603 priv->assoc_capability = bss_conf->assoc_capability;
5604 priv->next_scan_jiffies = jiffies +
5605 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
508e32e1
RC		 5606 mutex_lock(&priv->mutex);
5607 iwl4965_post_associate(priv);
5608 mutex_unlock(&priv->mutex);
3109ece1
TW		 5609 } else {
5610 priv->assoc_id = 0;
5611 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
5612 }
5613 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
5614 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
7e8c519e 5615 iwl_send_rxon_assoc(priv);
471b3efd
JB		 5616 }
5617
220173b0 5618}
b481de9c 5619
bb8c093b 5620static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
b481de9c
ZY		 5621{
5622 int rc = 0;
5623 unsigned long flags;
c79dd5b5 5624 struct iwl_priv *priv = hw->priv;
b481de9c
ZY		 5625
5626 IWL_DEBUG_MAC80211("enter\n");
5627
052c4b9f 5628 mutex_lock(&priv->mutex);
b481de9c
ZY		 5629 spin_lock_irqsave(&priv->lock, flags);
5630
fee1247a 5631 if (!iwl_is_ready_rf(priv)) {
b481de9c
ZY		 5632 rc = -EIO;
5633 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
5634 goto out_unlock;
5635 }
5636
5637 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
5638 rc = -EIO;
5639 IWL_ERROR("ERROR: APs don't scan\n");
5640 goto out_unlock;
5641 }
5642
7878a5a4
MA		 5643 /* we don't schedule scan within next_scan_jiffies period */
5644 if (priv->next_scan_jiffies &&
5645 time_after(priv->next_scan_jiffies, jiffies)) {
5646 rc = -EAGAIN;
5647 goto out_unlock;
5648 }
b481de9c 5649 /* if we just finished scan ask for delay */
7878a5a4
MA		 5650 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
5651 IWL_DELAY_NEXT_SCAN, jiffies)) {
b481de9c
ZY		 5652 rc = -EAGAIN;
5653 goto out_unlock;
5654 }
5655 if (len) {
7878a5a4 5656 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
bb8c093b 5657 iwl4965_escape_essid(ssid, len), (int)len);
b481de9c
ZY		 5658
5659 priv->one_direct_scan = 1;
5660 priv->direct_ssid_len = (u8)
5661 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
5662 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
948c171c
MA		 5663 } else
5664 priv->one_direct_scan = 0;
b481de9c 5665
bb8c093b 5666 rc = iwl4965_scan_initiate(priv);
b481de9c
ZY		 5667
5668 IWL_DEBUG_MAC80211("leave\n");
5669
5670out_unlock:
5671 spin_unlock_irqrestore(&priv->lock, flags);
052c4b9f 5672 mutex_unlock(&priv->mutex);
b481de9c
ZY		 5673
5674 return rc;
5675}
5676
ab885f8c
EG		 5677static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
5678 struct ieee80211_key_conf *keyconf, const u8 *addr,
5679 u32 iv32, u16 *phase1key)
5680{
5681 struct iwl_priv *priv = hw->priv;
5682 u8 sta_id = IWL_INVALID_STATION;
5683 unsigned long flags;
5684 __le16 key_flags = 0;
5685 int i;
5686 DECLARE_MAC_BUF(mac);
5687
5688 IWL_DEBUG_MAC80211("enter\n");
5689
947b13a7 5690 sta_id = iwl_find_station(priv, addr);
ab885f8c
EG		 5691 if (sta_id == IWL_INVALID_STATION) {
5692 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
5693 print_mac(mac, addr));
5694 return;
5695 }
5696
5697 iwl4965_scan_cancel_timeout(priv, 100);
5698
5699 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
5700 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
5701 key_flags &= ~STA_KEY_FLG_INVALID;
5702
5425e490 5703 if (sta_id == priv->hw_params.bcast_sta_id)
ab885f8c
EG		 5704 key_flags |= STA_KEY_MULTICAST_MSK;
5705
5706 spin_lock_irqsave(&priv->sta_lock, flags);
5707
ab885f8c
EG		 5708 priv->stations[sta_id].sta.key.key_flags = key_flags;
5709 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
5710
5711 for (i = 0; i < 5; i++)
5712 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
5713 cpu_to_le16(phase1key[i]);
5714
5715 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
5716 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
5717
133636de 5718 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
ab885f8c
EG		 5719
5720 spin_unlock_irqrestore(&priv->sta_lock, flags);
5721
5722 IWL_DEBUG_MAC80211("leave\n");
5723}
5724
bb8c093b 5725static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
b481de9c
ZY		 5726 const u8 *local_addr, const u8 *addr,
5727 struct ieee80211_key_conf *key)
5728{
c79dd5b5 5729 struct iwl_priv *priv = hw->priv;
0795af57 5730 DECLARE_MAC_BUF(mac);
deb09c43
EG		 5731 int ret = 0;
5732 u8 sta_id = IWL_INVALID_STATION;
6974e363 5733 u8 is_default_wep_key = 0;
b481de9c
ZY		 5734
5735 IWL_DEBUG_MAC80211("enter\n");
5736
099b40b7 5737 if (priv->hw_params.sw_crypto) {
b481de9c
ZY		 5738 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
5739 return -EOPNOTSUPP;
5740 }
5741
5742 if (is_zero_ether_addr(addr))
5743 /* only support pairwise keys */
5744 return -EOPNOTSUPP;
5745
947b13a7 5746 sta_id = iwl_find_station(priv, addr);
6974e363
EG		 5747 if (sta_id == IWL_INVALID_STATION) {
5748 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
5749 print_mac(mac, addr));
5750 return -EINVAL;
b481de9c 5751
deb09c43 5752 }
b481de9c 5753
6974e363 5754 mutex_lock(&priv->mutex);
bb8c093b 5755 iwl4965_scan_cancel_timeout(priv, 100);
6974e363
EG		 5756 mutex_unlock(&priv->mutex);
5757
5758 /* If we are getting WEP group key and we didn't receive any key mapping
5759 * so far, we are in legacy wep mode (group key only), otherwise we are
5760 * in 1X mode.
5761 * In legacy wep mode, we use another host command to the uCode */
5425e490 5762 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
6974e363
EG		 5763 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
5764 if (cmd == SET_KEY)
5765 is_default_wep_key = !priv->key_mapping_key;
5766 else
5767 is_default_wep_key = priv->default_wep_key;
5768 }
052c4b9f 5769
b481de9c 5770 switch (cmd) {
deb09c43 5771 case SET_KEY:
6974e363
EG		 5772 if (is_default_wep_key)
5773 ret = iwl_set_default_wep_key(priv, key);
deb09c43 5774 else
7480513f 5775 ret = iwl_set_dynamic_key(priv, key, sta_id);
deb09c43
EG		 5776
5777 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
b481de9c
ZY		 5778 break;
5779 case DISABLE_KEY:
6974e363
EG		 5780 if (is_default_wep_key)
5781 ret = iwl_remove_default_wep_key(priv, key);
deb09c43 5782 else
3ec47732 5783 ret = iwl_remove_dynamic_key(priv, key, sta_id);
deb09c43
EG		 5784
5785 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
b481de9c
ZY		 5786 break;
5787 default:
deb09c43 5788 ret = -EINVAL;
b481de9c
ZY		 5789 }
5790
5791 IWL_DEBUG_MAC80211("leave\n");
b481de9c 5792
deb09c43 5793 return ret;
b481de9c
ZY		 5794}
5795
e100bb64 5796static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
b481de9c
ZY		 5797 const struct ieee80211_tx_queue_params *params)
5798{
c79dd5b5 5799 struct iwl_priv *priv = hw->priv;
b481de9c
ZY		 5800 unsigned long flags;
5801 int q;
b481de9c
ZY		 5802
5803 IWL_DEBUG_MAC80211("enter\n");
5804
fee1247a 5805 if (!iwl_is_ready_rf(priv)) {
b481de9c
ZY		 5806 IWL_DEBUG_MAC80211("leave - RF not ready\n");
5807 return -EIO;
5808 }
5809
5810 if (queue >= AC_NUM) {
5811 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
5812 return 0;
5813 }
5814
b481de9c
ZY		 5815 if (!priv->qos_data.qos_enable) {
5816 priv->qos_data.qos_active = 0;
5817 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
5818 return 0;
5819 }
5820 q = AC_NUM - 1 - queue;
5821
5822 spin_lock_irqsave(&priv->lock, flags);
5823
5824 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
5825 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
5826 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
5827 priv->qos_data.def_qos_parm.ac[q].edca_txop =
3330d7be 5828 cpu_to_le16((params->txop * 32));
b481de9c
ZY		 5829
5830 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
5831 priv->qos_data.qos_active = 1;
5832
5833 spin_unlock_irqrestore(&priv->lock, flags);
5834
5835 mutex_lock(&priv->mutex);
5836 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
bb8c093b 5837 iwl4965_activate_qos(priv, 1);
3109ece1 5838 else if (priv->assoc_id && iwl_is_associated(priv))
bb8c093b 5839 iwl4965_activate_qos(priv, 0);
b481de9c
ZY		 5840
5841 mutex_unlock(&priv->mutex);
5842
b481de9c
ZY		 5843 IWL_DEBUG_MAC80211("leave\n");
5844 return 0;
5845}
5846
bb8c093b 5847static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
b481de9c
ZY		 5848 struct ieee80211_tx_queue_stats *stats)
5849{
c79dd5b5 5850 struct iwl_priv *priv = hw->priv;
b481de9c 5851 int i, avail;
bb8c093b
CH		 5852 struct iwl4965_tx_queue *txq;
5853 struct iwl4965_queue *q;
b481de9c
ZY		 5854 unsigned long flags;
5855
5856 IWL_DEBUG_MAC80211("enter\n");
5857
fee1247a 5858 if (!iwl_is_ready_rf(priv)) {
b481de9c
ZY		 5859 IWL_DEBUG_MAC80211("leave - RF not ready\n");
5860 return -EIO;
5861 }
5862
5863 spin_lock_irqsave(&priv->lock, flags);
5864
5865 for (i = 0; i < AC_NUM; i++) {
5866 txq = &priv->txq[i];
5867 q = &txq->q;
bb8c093b 5868 avail = iwl4965_queue_space(q);
b481de9c 5869
57ffc589
JB		 5870 stats[i].len = q->n_window - avail;
5871 stats[i].limit = q->n_window - q->high_mark;
5872 stats[i].count = q->n_window;
b481de9c
ZY		 5873
5874 }
5875 spin_unlock_irqrestore(&priv->lock, flags);
5876
5877 IWL_DEBUG_MAC80211("leave\n");
5878
5879 return 0;
5880}
5881
bb8c093b 5882static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
b481de9c
ZY		 5883 struct ieee80211_low_level_stats *stats)
5884{
bf403db8
EK		 5885 struct iwl_priv *priv = hw->priv;
5886
5887 priv = hw->priv;
b481de9c
ZY		 5888 IWL_DEBUG_MAC80211("enter\n");
5889 IWL_DEBUG_MAC80211("leave\n");
5890
5891 return 0;
5892}
5893
bb8c093b 5894static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
b481de9c 5895{
bf403db8
EK		 5896 struct iwl_priv *priv;
5897
5898 priv = hw->priv;
b481de9c
ZY		 5899 IWL_DEBUG_MAC80211("enter\n");
5900 IWL_DEBUG_MAC80211("leave\n");
5901
5902 return 0;
5903}
5904
bb8c093b 5905static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
b481de9c 5906{
c79dd5b5 5907 struct iwl_priv *priv = hw->priv;
b481de9c
ZY		 5908 unsigned long flags;
5909
5910 mutex_lock(&priv->mutex);
5911 IWL_DEBUG_MAC80211("enter\n");
5912
5913 priv->lq_mngr.lq_ready = 0;
c8b0e6e1 5914#ifdef CONFIG_IWL4965_HT
b481de9c 5915 spin_lock_irqsave(&priv->lock, flags);
fd105e79 5916 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
b481de9c 5917 spin_unlock_irqrestore(&priv->lock, flags);
c8b0e6e1 5918#endif /* CONFIG_IWL4965_HT */
b481de9c 5919
c7de35cd 5920 iwl_reset_qos(priv);
b481de9c
ZY		 5921
5922 cancel_delayed_work(&priv->post_associate);
5923
5924 spin_lock_irqsave(&priv->lock, flags);
5925 priv->assoc_id = 0;
5926 priv->assoc_capability = 0;
b481de9c
ZY		 5927 priv->assoc_station_added = 0;
5928
5929 /* new association get rid of ibss beacon skb */
5930 if (priv->ibss_beacon)
5931 dev_kfree_skb(priv->ibss_beacon);
5932
5933 priv->ibss_beacon = NULL;
5934
5935 priv->beacon_int = priv->hw->conf.beacon_int;
3109ece1 5936 priv->timestamp = 0;
b481de9c
ZY		 5937 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
5938 priv->beacon_int = 0;
5939
5940 spin_unlock_irqrestore(&priv->lock, flags);
5941
fee1247a 5942 if (!iwl_is_ready_rf(priv)) {
fde3571f
MA		 5943 IWL_DEBUG_MAC80211("leave - not ready\n");
5944 mutex_unlock(&priv->mutex);
5945 return;
5946 }
5947
052c4b9f 5948 /* we are restarting association process
5949 * clear RXON_FILTER_ASSOC_MSK bit
5950 */
5951 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
bb8c093b 5952 iwl4965_scan_cancel_timeout(priv, 100);
052c4b9f 5953 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
bb8c093b 5954 iwl4965_commit_rxon(priv);
052c4b9f 5955 }
5956
5da4b55f
MA		 5957 iwl_power_update_mode(priv, 0);
5958
b481de9c
ZY		 5959 /* Per mac80211.h: This is only used in IBSS mode... */
5960 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
052c4b9f 5961
b481de9c
ZY		 5962 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
5963 mutex_unlock(&priv->mutex);
5964 return;
5965 }
5966
bb8c093b 5967 iwl4965_set_rate(priv);
b481de9c
ZY		 5968
5969 mutex_unlock(&priv->mutex);
5970
5971 IWL_DEBUG_MAC80211("leave\n");
b481de9c
ZY		 5972}
5973
bb8c093b 5974static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
b481de9c
ZY		 5975 struct ieee80211_tx_control *control)
5976{
c79dd5b5 5977 struct iwl_priv *priv = hw->priv;
b481de9c
ZY		 5978 unsigned long flags;
5979
5980 mutex_lock(&priv->mutex);
5981 IWL_DEBUG_MAC80211("enter\n");
5982
fee1247a 5983 if (!iwl_is_ready_rf(priv)) {
b481de9c
ZY		 5984 IWL_DEBUG_MAC80211("leave - RF not ready\n");
5985 mutex_unlock(&priv->mutex);
5986 return -EIO;
5987 }
5988
5989 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
5990 IWL_DEBUG_MAC80211("leave - not IBSS\n");
5991 mutex_unlock(&priv->mutex);
5992 return -EIO;
5993 }
5994
5995 spin_lock_irqsave(&priv->lock, flags);
5996
5997 if (priv->ibss_beacon)
5998 dev_kfree_skb(priv->ibss_beacon);
5999
6000 priv->ibss_beacon = skb;
6001
6002 priv->assoc_id = 0;
6003
6004 IWL_DEBUG_MAC80211("leave\n");
6005 spin_unlock_irqrestore(&priv->lock, flags);
6006
c7de35cd 6007 iwl_reset_qos(priv);
b481de9c
ZY		 6008
6009 queue_work(priv->workqueue, &priv->post_associate.work);
6010
6011 mutex_unlock(&priv->mutex);
6012
6013 return 0;
6014}
6015
b481de9c
ZY		 6016/*****************************************************************************
6017 *
6018 * sysfs attributes
6019 *
6020 *****************************************************************************/
6021
0a6857e7 6022#ifdef CONFIG_IWLWIFI_DEBUG
b481de9c
ZY		 6023
6024/*
6025 * The following adds a new attribute to the sysfs representation
6026 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
6027 * used for controlling the debug level.
6028 *
6029 * See the level definitions in iwl for details.
6030 */
6031
6032static ssize_t show_debug_level(struct device_driver *d, char *buf)
6033{
0a6857e7 6034 return sprintf(buf, "0x%08X\n", iwl_debug_level);
b481de9c
ZY		 6035}
6036static ssize_t store_debug_level(struct device_driver *d,
6037 const char *buf, size_t count)
6038{
6039 char *p = (char *)buf;
6040 u32 val;
6041
6042 val = simple_strtoul(p, &p, 0);
6043 if (p == buf)
6044 printk(KERN_INFO DRV_NAME
6045 ": %s is not in hex or decimal form.\n", buf);
6046 else
0a6857e7 6047 iwl_debug_level = val;
b481de9c
ZY		 6048
6049 return strnlen(buf, count);
6050}
6051
6052static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
6053 show_debug_level, store_debug_level);
6054
0a6857e7 6055#endif /* CONFIG_IWLWIFI_DEBUG */
b481de9c 6056
b481de9c
ZY		 6057
6058static ssize_t show_temperature(struct device *d,
6059 struct device_attribute *attr, char *buf)
6060{
c79dd5b5 6061 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
b481de9c 6062
fee1247a 6063 if (!iwl_is_alive(priv))
b481de9c
ZY		 6064 return -EAGAIN;
6065
bb8c093b 6066 return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
b481de9c
ZY		 6067}
6068
6069static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
6070
6071static ssize_t show_rs_window(struct device *d,
6072 struct device_attribute *attr,
6073 char *buf)
6074{
c79dd5b5 6075 struct iwl_priv *priv = d->driver_data;
bb8c093b 6076 return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
b481de9c
ZY		 6077}
6078static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
6079
6080static ssize_t show_tx_power(struct device *d,
6081 struct device_attribute *attr, char *buf)
6082{
c79dd5b5 6083 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
b481de9c
ZY		 6084 return sprintf(buf, "%d\n", priv->user_txpower_limit);
6085}
6086
6087static ssize_t store_tx_power(struct device *d,
6088 struct device_attribute *attr,
6089 const char *buf, size_t count)
6090{
c79dd5b5 6091 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
b481de9c
ZY		 6092 char *p = (char *)buf;
6093 u32 val;
6094
6095 val = simple_strtoul(p, &p, 10);
6096 if (p == buf)
6097 printk(KERN_INFO DRV_NAME
6098 ": %s is not in decimal form.\n", buf);
6099 else
bb8c093b 6100 iwl4965_hw_reg_set_txpower(priv, val);
b481de9c
ZY		 6101
6102 return count;
6103}
6104
6105static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
6106
6107static ssize_t show_flags(struct device *d,
6108 struct device_attribute *attr, char *buf)
6109{
c79dd5b5 6110 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
b481de9c
ZY		 6111
6112 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
6113}
6114
6115static ssize_t store_flags(struct device *d,
6116 struct device_attribute *attr,
6117 const char *buf, size_t count)
6118{
c79dd5b5 6119 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
b481de9c
ZY		 6120 u32 flags = simple_strtoul(buf, NULL, 0);
6121
6122 mutex_lock(&priv->mutex);
6123 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
6124 /* Cancel any currently running scans... */
bb8c093b 6125 if (iwl4965_scan_cancel_timeout(priv, 100))
b481de9c
ZY		 6126 IWL_WARNING("Could not cancel scan.\n");
6127 else {
6128 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
6129 flags);
6130 priv->staging_rxon.flags = cpu_to_le32(flags);
bb8c093b 6131 iwl4965_commit_rxon(priv);
b481de9c
ZY		 6132 }
6133 }
6134 mutex_unlock(&priv->mutex);
6135
6136 return count;
6137}
6138
6139static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
6140
6141static ssize_t show_filter_flags(struct device *d,
6142 struct device_attribute *attr, char *buf)
6143{
c79dd5b5 6144 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
b481de9c
ZY		 6145
6146 return sprintf(buf, "0x%04X\n",
6147 le32_to_cpu(priv->active_rxon.filter_flags));
6148}
6149
6150static ssize_t store_filter_flags(struct device *d,
6151 struct device_attribute *attr,
6152 const char *buf, size_t count)
6153{
c79dd5b5 6154 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
b481de9c
ZY		 6155 u32 filter_flags = simple_strtoul(buf, NULL, 0);
6156
6157 mutex_lock(&priv->mutex);
6158 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
6159 /* Cancel any currently running scans... */
bb8c093b 6160 if (iwl4965_scan_cancel_timeout(priv, 100))
b481de9c
ZY		 6161 IWL_WARNING("Could not cancel scan.\n");
6162 else {
6163 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
6164 "0x%04X\n", filter_flags);
6165 priv->staging_rxon.filter_flags =
6166 cpu_to_le32(filter_flags);
bb8c093b 6167 iwl4965_commit_rxon(priv);
b481de9c
ZY		 6168 }
6169 }
6170 mutex_unlock(&priv->mutex);
6171
6172 return count;
6173}
6174
6175static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
6176 store_filter_flags);
6177
c8b0e6e1 6178#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
b481de9c
ZY		 6179
6180static ssize_t show_measurement(struct device *d,
6181 struct device_attribute *attr, char *buf)
6182{
c79dd5b5 6183 struct iwl_priv *priv = dev_get_drvdata(d);
bb8c093b 6184 struct iwl4965_spectrum_notification measure_report;
b481de9c
ZY		 6185 u32 size = sizeof(measure_report), len = 0, ofs = 0;
6186 u8 *data = (u8 *) & measure_report;
6187 unsigned long flags;
6188
6189 spin_lock_irqsave(&priv->lock, flags);
6190 if (!(priv->measurement_status & MEASUREMENT_READY)) {
6191 spin_unlock_irqrestore(&priv->lock, flags);
6192 return 0;
6193 }
6194 memcpy(&measure_report, &priv->measure_report, size);
6195 priv->measurement_status = 0;
6196 spin_unlock_irqrestore(&priv->lock, flags);
6197
6198 while (size && (PAGE_SIZE - len)) {
6199 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
6200 PAGE_SIZE - len, 1);
6201 len = strlen(buf);
6202 if (PAGE_SIZE - len)
6203 buf[len++] = '\n';
6204
6205 ofs += 16;
6206 size -= min(size, 16U);
6207 }
6208
6209 return len;
6210}
6211
6212static ssize_t store_measurement(struct device *d,
6213 struct device_attribute *attr,
6214 const char *buf, size_t count)
6215{
c79dd5b5 6216 struct iwl_priv *priv = dev_get_drvdata(d);
b481de9c
ZY		 6217 struct ieee80211_measurement_params params = {
6218 .channel = le16_to_cpu(priv->active_rxon.channel),
6219 .start_time = cpu_to_le64(priv->last_tsf),
6220 .duration = cpu_to_le16(1),
6221 };
6222 u8 type = IWL_MEASURE_BASIC;
6223 u8 buffer[32];
6224 u8 channel;
6225
6226 if (count) {
6227 char *p = buffer;
6228 strncpy(buffer, buf, min(sizeof(buffer), count));
6229 channel = simple_strtoul(p, NULL, 0);
6230 if (channel)
6231 params.channel = channel;
6232
6233 p = buffer;
6234 while (*p && *p != ' ')
6235 p++;
6236 if (*p)
6237 type = simple_strtoul(p + 1, NULL, 0);
6238 }
6239
6240 IWL_DEBUG_INFO("Invoking measurement of type %d on "
6241 "channel %d (for '%s')\n", type, params.channel, buf);
bb8c093b 6242 iwl4965_get_measurement(priv, &params, type);
b481de9c
ZY		 6243
6244 return count;
6245}
6246
6247static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
6248 show_measurement, store_measurement);
c8b0e6e1 6249#endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
b481de9c
ZY		 6250
6251static ssize_t store_retry_rate(struct device *d,
6252 struct device_attribute *attr,
6253 const char *buf, size_t count)
6254{
c79dd5b5 6255 struct iwl_priv *priv = dev_get_drvdata(d);
b481de9c
ZY		 6256
6257 priv->retry_rate = simple_strtoul(buf, NULL, 0);
6258 if (priv->retry_rate <= 0)
6259 priv->retry_rate = 1;
6260
6261 return count;
6262}
6263
6264static ssize_t show_retry_rate(struct device *d,
6265 struct device_attribute *attr, char *buf)
6266{
c79dd5b5 6267 struct iwl_priv *priv = dev_get_drvdata(d);
b481de9c
ZY		 6268 return sprintf(buf, "%d", priv->retry_rate);
6269}
6270
6271static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
6272 store_retry_rate);
6273
6274static ssize_t store_power_level(struct device *d,
6275 struct device_attribute *attr,
6276 const char *buf, size_t count)
6277{
c79dd5b5 6278 struct iwl_priv *priv = dev_get_drvdata(d);
b481de9c
ZY		 6279 int rc;
6280 int mode;
6281
6282 mode = simple_strtoul(buf, NULL, 0);
6283 mutex_lock(&priv->mutex);
6284
fee1247a 6285 if (!iwl_is_ready(priv)) {
b481de9c
ZY		 6286 rc = -EAGAIN;
6287 goto out;
6288 }
6289
5da4b55f
MA		 6290 rc = iwl_power_set_user_mode(priv, mode);
6291 if (rc) {
6292 IWL_DEBUG_MAC80211("failed setting power mode.\n");
6293 goto out;
b481de9c 6294 }
b481de9c
ZY		 6295 rc = count;
6296
6297 out:
6298 mutex_unlock(&priv->mutex);
6299 return rc;
6300}
6301
6302#define MAX_WX_STRING 80
6303
6304/* Values are in microsecond */
6305static const s32 timeout_duration[] = {
6306 350000,
6307 250000,
6308 75000,
6309 37000,
6310 25000,
6311};
6312static const s32 period_duration[] = {
6313 400000,
6314 700000,
6315 1000000,
6316 1000000,
6317 1000000
6318};
6319
6320static ssize_t show_power_level(struct device *d,
6321 struct device_attribute *attr, char *buf)
6322{
c79dd5b5 6323 struct iwl_priv *priv = dev_get_drvdata(d);
5da4b55f 6324 int level = priv->power_data.power_mode;
b481de9c
ZY		 6325 char *p = buf;
6326
6327 p += sprintf(p, "%d ", level);
6328 switch (level) {
6329 case IWL_POWER_MODE_CAM:
6330 case IWL_POWER_AC:
6331 p += sprintf(p, "(AC)");
6332 break;
6333 case IWL_POWER_BATTERY:
6334 p += sprintf(p, "(BATTERY)");
6335 break;
6336 default:
6337 p += sprintf(p,
6338 "(Timeout %dms, Period %dms)",
6339 timeout_duration[level - 1] / 1000,
6340 period_duration[level - 1] / 1000);
6341 }
5da4b55f 6342/*
b481de9c
ZY		 6343 if (!(priv->power_mode & IWL_POWER_ENABLED))
6344 p += sprintf(p, " OFF\n");
6345 else
6346 p += sprintf(p, " \n");
5da4b55f
MA		 6347*/
6348 p += sprintf(p, " \n");
b481de9c 6349 return (p - buf + 1);
b481de9c
ZY		 6350}
6351
6352static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
6353 store_power_level);
6354
6355static ssize_t show_channels(struct device *d,
6356 struct device_attribute *attr, char *buf)
6357{
8318d78a
JB		 6358 /* all this shit doesn't belong into sysfs anyway */
6359 return 0;
b481de9c
ZY		 6360}
6361
6362static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
6363
6364static ssize_t show_statistics(struct device *d,
6365 struct device_attribute *attr, char *buf)
6366{
c79dd5b5 6367 struct iwl_priv *priv = dev_get_drvdata(d);
bb8c093b 6368 u32 size = sizeof(struct iwl4965_notif_statistics);
b481de9c
ZY		 6369 u32 len = 0, ofs = 0;
6370 u8 *data = (u8 *) & priv->statistics;
6371 int rc = 0;
6372
fee1247a 6373 if (!iwl_is_alive(priv))
b481de9c
ZY		 6374 return -EAGAIN;
6375
6376 mutex_lock(&priv->mutex);
49ea8596 6377 rc = iwl_send_statistics_request(priv, 0);
b481de9c
ZY		 6378 mutex_unlock(&priv->mutex);
6379
6380 if (rc) {
6381 len = sprintf(buf,
6382 "Error sending statistics request: 0x%08X\n", rc);
6383 return len;
6384 }
6385
6386 while (size && (PAGE_SIZE - len)) {
6387 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
6388 PAGE_SIZE - len, 1);
6389 len = strlen(buf);
6390 if (PAGE_SIZE - len)
6391 buf[len++] = '\n';
6392
6393 ofs += 16;
6394 size -= min(size, 16U);
6395 }
6396
6397 return len;
6398}
6399
6400static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
6401
b481de9c
ZY		 6402static ssize_t show_status(struct device *d,
6403 struct device_attribute *attr, char *buf)
6404{
c79dd5b5 6405 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
fee1247a 6406 if (!iwl_is_alive(priv))
b481de9c
ZY		 6407 return -EAGAIN;
6408 return sprintf(buf, "0x%08x\n", (int)priv->status);
6409}
6410
6411static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
6412
6413static ssize_t dump_error_log(struct device *d,
6414 struct device_attribute *attr,
6415 const char *buf, size_t count)
6416{
6417 char *p = (char *)buf;
6418
6419 if (p[0] == '1')
c79dd5b5 6420 iwl4965_dump_nic_error_log((struct iwl_priv *)d->driver_data);
b481de9c
ZY		 6421
6422 return strnlen(buf, count);
6423}
6424
6425static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
6426
6427static ssize_t dump_event_log(struct device *d,
6428 struct device_attribute *attr,
6429 const char *buf, size_t count)
6430{
6431 char *p = (char *)buf;
6432
6433 if (p[0] == '1')
c79dd5b5 6434 iwl4965_dump_nic_event_log((struct iwl_priv *)d->driver_data);
b481de9c
ZY		 6435
6436 return strnlen(buf, count);
6437}
6438
6439static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
6440
6441/*****************************************************************************
6442 *
6443 * driver setup and teardown
6444 *
6445 *****************************************************************************/
6446
c79dd5b5 6447static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
b481de9c
ZY		 6448{
6449 priv->workqueue = create_workqueue(DRV_NAME);
6450
6451 init_waitqueue_head(&priv->wait_command_queue);
6452
bb8c093b
CH		 6453 INIT_WORK(&priv->up, iwl4965_bg_up);
6454 INIT_WORK(&priv->restart, iwl4965_bg_restart);
6455 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
6456 INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
6457 INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
6458 INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
6459 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
6460 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
6461 INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
6462 INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
6463 INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
6464 INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
6465
6466 iwl4965_hw_setup_deferred_work(priv);
b481de9c
ZY		 6467
6468 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
bb8c093b 6469 iwl4965_irq_tasklet, (unsigned long)priv);
b481de9c
ZY		 6470}
6471
c79dd5b5 6472static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
b481de9c 6473{
bb8c093b 6474 iwl4965_hw_cancel_deferred_work(priv);
b481de9c 6475
3ae6a054 6476 cancel_delayed_work_sync(&priv->init_alive_start);
b481de9c
ZY		 6477 cancel_delayed_work(&priv->scan_check);
6478 cancel_delayed_work(&priv->alive_start);
6479 cancel_delayed_work(&priv->post_associate);
6480 cancel_work_sync(&priv->beacon_update);
6481}
6482
bb8c093b 6483static struct attribute *iwl4965_sysfs_entries[] = {
b481de9c
ZY		 6484 &dev_attr_channels.attr,
6485 &dev_attr_dump_errors.attr,
6486 &dev_attr_dump_events.attr,
6487 &dev_attr_flags.attr,
6488 &dev_attr_filter_flags.attr,
c8b0e6e1 6489#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
b481de9c
ZY		 6490 &dev_attr_measurement.attr,
6491#endif
6492 &dev_attr_power_level.attr,
6493 &dev_attr_retry_rate.attr,
b481de9c
ZY		 6494 &dev_attr_rs_window.attr,
6495 &dev_attr_statistics.attr,
6496 &dev_attr_status.attr,
6497 &dev_attr_temperature.attr,
b481de9c
ZY		 6498 &dev_attr_tx_power.attr,
6499
6500 NULL
6501};
6502
bb8c093b 6503static struct attribute_group iwl4965_attribute_group = {
b481de9c 6504 .name = NULL, /* put in device directory */
bb8c093b 6505 .attrs = iwl4965_sysfs_entries,
b481de9c
ZY		 6506};
6507
bb8c093b
CH		 6508static struct ieee80211_ops iwl4965_hw_ops = {
6509 .tx = iwl4965_mac_tx,
6510 .start = iwl4965_mac_start,
6511 .stop = iwl4965_mac_stop,
6512 .add_interface = iwl4965_mac_add_interface,
6513 .remove_interface = iwl4965_mac_remove_interface,
6514 .config = iwl4965_mac_config,
6515 .config_interface = iwl4965_mac_config_interface,
6516 .configure_filter = iwl4965_configure_filter,
6517 .set_key = iwl4965_mac_set_key,
ab885f8c 6518 .update_tkip_key = iwl4965_mac_update_tkip_key,
bb8c093b
CH		 6519 .get_stats = iwl4965_mac_get_stats,
6520 .get_tx_stats = iwl4965_mac_get_tx_stats,
6521 .conf_tx = iwl4965_mac_conf_tx,
6522 .get_tsf = iwl4965_mac_get_tsf,
6523 .reset_tsf = iwl4965_mac_reset_tsf,
6524 .beacon_update = iwl4965_mac_beacon_update,
471b3efd 6525 .bss_info_changed = iwl4965_bss_info_changed,
c8b0e6e1 6526#ifdef CONFIG_IWL4965_HT
9ab46173 6527 .ampdu_action = iwl4965_mac_ampdu_action,
c8b0e6e1 6528#endif /* CONFIG_IWL4965_HT */
bb8c093b 6529 .hw_scan = iwl4965_mac_hw_scan
b481de9c
ZY		 6530};
6531
bb8c093b 6532static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
b481de9c
ZY		 6533{
6534 int err = 0;
c79dd5b5 6535 struct iwl_priv *priv;
b481de9c 6536 struct ieee80211_hw *hw;
82b9a121 6537 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
0359facc 6538 unsigned long flags;
5a66926a 6539 DECLARE_MAC_BUF(mac);
b481de9c 6540
316c30d9
AK		 6541 /************************
6542 * 1. Allocating HW data
6543 ************************/
6544
6440adb5
CB		 6545 /* Disabling hardware scan means that mac80211 will perform scans
6546 * "the hard way", rather than using device's scan. */
1ea87396 6547 if (cfg->mod_params->disable_hw_scan) {
bf403db8
EK		 6548 if (cfg->mod_params->debug & IWL_DL_INFO)
6549 dev_printk(KERN_DEBUG, &(pdev->dev),
6550 "Disabling hw_scan\n");
bb8c093b 6551 iwl4965_hw_ops.hw_scan = NULL;
b481de9c
ZY		 6552 }
6553
1d0a082d
AK		 6554 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
6555 if (!hw) {
b481de9c
ZY		 6556 err = -ENOMEM;
6557 goto out;
6558 }
1d0a082d
AK		 6559 priv = hw->priv;
6560 /* At this point both hw and priv are allocated. */
6561
b481de9c
ZY		 6562 SET_IEEE80211_DEV(hw, &pdev->dev);
6563
6564 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
82b9a121 6565 priv->cfg = cfg;
b481de9c 6566 priv->pci_dev = pdev;
316c30d9 6567
0a6857e7 6568#ifdef CONFIG_IWLWIFI_DEBUG
bf403db8 6569 priv->debug_level = priv->cfg->mod_params->debug;
b481de9c
ZY		 6570 atomic_set(&priv->restrict_refcnt, 0);
6571#endif
b481de9c 6572
316c30d9
AK		 6573 /**************************
6574 * 2. Initializing PCI bus
6575 **************************/
6576 if (pci_enable_device(pdev)) {
6577 err = -ENODEV;
6578 goto out_ieee80211_free_hw;
6579 }
6580
6581 pci_set_master(pdev);
6582
cc2a8ea8 6583 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
316c30d9 6584 if (!err)
cc2a8ea8
RR		 6585 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
6586 if (err) {
6587 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
6588 if (!err)
6589 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
6590 /* both attempts failed: */
316c30d9 6591 if (err) {
cc2a8ea8
RR		 6592 printk(KERN_WARNING "%s: No suitable DMA available.\n",
6593 DRV_NAME);
316c30d9 6594 goto out_pci_disable_device;
cc2a8ea8 6595 }
316c30d9
AK		 6596 }
6597
6598 err = pci_request_regions(pdev, DRV_NAME);
6599 if (err)
6600 goto out_pci_disable_device;
6601
6602 pci_set_drvdata(pdev, priv);
6603
6604 /* We disable the RETRY_TIMEOUT register (0x41) to keep
6605 * PCI Tx retries from interfering with C3 CPU state */
6606 pci_write_config_byte(pdev, 0x41, 0x00);
6607
6608 /***********************
6609 * 3. Read REV register
6610 ***********************/
6611 priv->hw_base = pci_iomap(pdev, 0, 0);
6612 if (!priv->hw_base) {
6613 err = -ENODEV;
6614 goto out_pci_release_regions;
6615 }
6616
6617 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
6618 (unsigned long long) pci_resource_len(pdev, 0));
6619 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
6620
b661c819 6621 iwl_hw_detect(priv);
316c30d9 6622 printk(KERN_INFO DRV_NAME
b661c819
TW		 6623 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
6624 priv->cfg->name, priv->hw_rev);
316c30d9 6625
91238714
TW		 6626 /* amp init */
6627 err = priv->cfg->ops->lib->apm_ops.init(priv);
316c30d9 6628 if (err < 0) {
91238714 6629 IWL_DEBUG_INFO("Failed to init APMG\n");
316c30d9
AK		 6630 goto out_iounmap;
6631 }
91238714
TW		 6632 /*****************
6633 * 4. Read EEPROM
6634 *****************/
316c30d9
AK		 6635 /* Read the EEPROM */
6636 err = iwl_eeprom_init(priv);
6637 if (err) {
6638 IWL_ERROR("Unable to init EEPROM\n");
6639 goto out_iounmap;
6640 }
8614f360
TW		 6641 err = iwl_eeprom_check_version(priv);
6642 if (err)
6643 goto out_iounmap;
6644
316c30d9
AK		 6645 /* MAC Address location in EEPROM same for 3945/4965 */
6646 iwl_eeprom_get_mac(priv, priv->mac_addr);
6647 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
6648 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
6649
6650 /************************
6651 * 5. Setup HW constants
6652 ************************/
6653 /* Device-specific setup */
5425e490
TW		 6654 if (priv->cfg->ops->lib->set_hw_params(priv)) {
6655 IWL_ERROR("failed to set hw parameters\n");
073d3f5f 6656 goto out_free_eeprom;
316c30d9
AK		 6657 }
6658
6659 /*******************
6660 * 6. Setup hw/priv
6661 *******************/
b481de9c 6662
bf85ea4f
AK		 6663 err = iwl_setup(priv);
6664 if (err)
399f4900 6665 goto out_free_eeprom;
bf85ea4f 6666 /* At this point both hw and priv are initialized. */
316c30d9
AK		 6667
6668 /**********************************
6669 * 7. Initialize module parameters
6670 **********************************/
6671
6672 /* Disable radio (SW RF KILL) via parameter when loading driver */
1ea87396 6673 if (priv->cfg->mod_params->disable) {
316c30d9
AK		 6674 set_bit(STATUS_RF_KILL_SW, &priv->status);
6675 IWL_DEBUG_INFO("Radio disabled.\n");
6676 }
6677
1ea87396 6678 if (priv->cfg->mod_params->enable_qos)
316c30d9
AK		 6679 priv->qos_data.qos_enable = 1;
6680
6681 /********************
6682 * 8. Setup services
6683 ********************/
0359facc 6684 spin_lock_irqsave(&priv->lock, flags);
316c30d9 6685 iwl4965_disable_interrupts(priv);
0359facc 6686 spin_unlock_irqrestore(&priv->lock, flags);
316c30d9
AK		 6687
6688 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
6689 if (err) {
6690 IWL_ERROR("failed to create sysfs device attributes\n");
399f4900 6691 goto out_free_eeprom;
316c30d9
AK		 6692 }
6693
6694 err = iwl_dbgfs_register(priv, DRV_NAME);
6695 if (err) {
6696 IWL_ERROR("failed to create debugfs files\n");
6697 goto out_remove_sysfs;
6698 }
6699
6700 iwl4965_setup_deferred_work(priv);
6701 iwl4965_setup_rx_handlers(priv);
6702
6703 /********************
6704 * 9. Conclude
6705 ********************/
5a66926a
ZY		 6706 pci_save_state(pdev);
6707 pci_disable_device(pdev);
b481de9c 6708
c8381fdc
MA		 6709 /* notify iwlcore to init */
6710 iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
b481de9c
ZY		 6711 return 0;
6712
316c30d9
AK		 6713 out_remove_sysfs:
6714 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
073d3f5f
TW		 6715 out_free_eeprom:
6716 iwl_eeprom_free(priv);
b481de9c
ZY		 6717 out_iounmap:
6718 pci_iounmap(pdev, priv->hw_base);
6719 out_pci_release_regions:
6720 pci_release_regions(pdev);
316c30d9 6721 pci_set_drvdata(pdev, NULL);
b481de9c
ZY		 6722 out_pci_disable_device:
6723 pci_disable_device(pdev);
b481de9c
ZY		 6724 out_ieee80211_free_hw:
6725 ieee80211_free_hw(priv->hw);
6726 out:
6727 return err;
6728}
6729
c83dbf68 6730static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
b481de9c 6731{
c79dd5b5 6732 struct iwl_priv *priv = pci_get_drvdata(pdev);
b481de9c
ZY		 6733 struct list_head *p, *q;
6734 int i;
0359facc 6735 unsigned long flags;
b481de9c
ZY		 6736
6737 if (!priv)
6738 return;
6739
6740 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
6741
c4f55232
RR		 6742 if (priv->mac80211_registered) {
6743 ieee80211_unregister_hw(priv->hw);
6744 priv->mac80211_registered = 0;
6745 }
6746
b481de9c 6747 set_bit(STATUS_EXIT_PENDING, &priv->status);
b24d22b1 6748
bb8c093b 6749 iwl4965_down(priv);
b481de9c 6750
0359facc
MA		 6751 /* make sure we flush any pending irq or
6752 * tasklet for the driver
6753 */
6754 spin_lock_irqsave(&priv->lock, flags);
6755 iwl4965_disable_interrupts(priv);
6756 spin_unlock_irqrestore(&priv->lock, flags);
6757
6758 iwl_synchronize_irq(priv);
6759
b481de9c
ZY		 6760 /* Free MAC hash list for ADHOC */
6761 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
6762 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
6763 list_del(p);
bb8c093b 6764 kfree(list_entry(p, struct iwl4965_ibss_seq, list));
b481de9c
ZY		 6765 }
6766 }
6767
c8381fdc 6768 iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT);
712b6cf5 6769 iwl_dbgfs_unregister(priv);
bb8c093b 6770 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
b481de9c 6771
bb8c093b 6772 iwl4965_dealloc_ucode_pci(priv);
b481de9c
ZY		 6773
6774 if (priv->rxq.bd)
a55360e4 6775 iwl_rx_queue_free(priv, &priv->rxq);
1053d35f 6776 iwl_hw_txq_ctx_free(priv);
b481de9c 6777
bf85ea4f 6778 iwlcore_clear_stations_table(priv);
073d3f5f 6779 iwl_eeprom_free(priv);
b481de9c 6780
b481de9c 6781
948c171c
MA		 6782 /*netif_stop_queue(dev); */
6783 flush_workqueue(priv->workqueue);
6784
bb8c093b 6785 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
b481de9c
ZY		 6786 * priv->workqueue... so we can't take down the workqueue
6787 * until now... */
6788 destroy_workqueue(priv->workqueue);
6789 priv->workqueue = NULL;
6790
b481de9c
ZY		 6791 pci_iounmap(pdev, priv->hw_base);
6792 pci_release_regions(pdev);
6793 pci_disable_device(pdev);
6794 pci_set_drvdata(pdev, NULL);
6795
bf85ea4f 6796 iwl_free_channel_map(priv);
c7de35cd 6797 iwlcore_free_geos(priv);
b481de9c
ZY		 6798
6799 if (priv->ibss_beacon)
6800 dev_kfree_skb(priv->ibss_beacon);
6801
6802 ieee80211_free_hw(priv->hw);
6803}
6804
6805#ifdef CONFIG_PM
6806
bb8c093b 6807static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
b481de9c 6808{
c79dd5b5 6809 struct iwl_priv *priv = pci_get_drvdata(pdev);
b481de9c 6810
e655b9f0
ZY		 6811 if (priv->is_open) {
6812 set_bit(STATUS_IN_SUSPEND, &priv->status);
6813 iwl4965_mac_stop(priv->hw);
6814 priv->is_open = 1;
6815 }
b481de9c 6816
b481de9c
ZY		 6817 pci_set_power_state(pdev, PCI_D3hot);
6818
b481de9c
ZY		 6819 return 0;
6820}
6821
bb8c093b 6822static int iwl4965_pci_resume(struct pci_dev *pdev)
b481de9c 6823{
c79dd5b5 6824 struct iwl_priv *priv = pci_get_drvdata(pdev);
b481de9c 6825
b481de9c 6826 pci_set_power_state(pdev, PCI_D0);
b481de9c 6827
e655b9f0
ZY		 6828 if (priv->is_open)
6829 iwl4965_mac_start(priv->hw);
b481de9c 6830
e655b9f0 6831 clear_bit(STATUS_IN_SUSPEND, &priv->status);
b481de9c
ZY		 6832 return 0;
6833}
6834
6835#endif /* CONFIG_PM */
6836
6837/*****************************************************************************
6838 *
6839 * driver and module entry point
6840 *
6841 *****************************************************************************/
6842
fed9017e
RR		 6843/* Hardware specific file defines the PCI IDs table for that hardware module */
6844static struct pci_device_id iwl_hw_card_ids[] = {
6845 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
6846 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
5a6a256e
TW		 6847#ifdef CONFIG_IWL5000
6848 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
6849 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
6850 {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
6851#endif /* CONFIG_IWL5000 */
fed9017e
RR		 6852 {0}
6853};
6854MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
6855
6856static struct pci_driver iwl_driver = {
b481de9c 6857 .name = DRV_NAME,
fed9017e 6858 .id_table = iwl_hw_card_ids,
bb8c093b
CH		 6859 .probe = iwl4965_pci_probe,
6860 .remove = __devexit_p(iwl4965_pci_remove),
b481de9c 6861#ifdef CONFIG_PM
bb8c093b
CH		 6862 .suspend = iwl4965_pci_suspend,
6863 .resume = iwl4965_pci_resume,
b481de9c
ZY		 6864#endif
6865};
6866
bb8c093b 6867static int __init iwl4965_init(void)
b481de9c
ZY		 6868{
6869
6870 int ret;
6871 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
6872 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
897e1cf2
RC		 6873
6874 ret = iwl4965_rate_control_register();
6875 if (ret) {
6876 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
6877 return ret;
6878 }
6879
fed9017e 6880 ret = pci_register_driver(&iwl_driver);
b481de9c
ZY		 6881 if (ret) {
6882 IWL_ERROR("Unable to initialize PCI module\n");
897e1cf2 6883 goto error_register;
b481de9c 6884 }
0a6857e7 6885#ifdef CONFIG_IWLWIFI_DEBUG
fed9017e 6886 ret = driver_create_file(&iwl_driver.driver, &driver_attr_debug_level);
b481de9c
ZY		 6887 if (ret) {
6888 IWL_ERROR("Unable to create driver sysfs file\n");
897e1cf2 6889 goto error_debug;
b481de9c
ZY		 6890 }
6891#endif
6892
6893 return ret;
897e1cf2
RC		 6894
6895#ifdef CONFIG_IWLWIFI_DEBUG
6896error_debug:
fed9017e 6897 pci_unregister_driver(&iwl_driver);
897e1cf2
RC		 6898#endif
6899error_register:
6900 iwl4965_rate_control_unregister();
6901 return ret;
b481de9c
ZY		 6902}
6903
bb8c093b 6904static void __exit iwl4965_exit(void)
b481de9c 6905{
0a6857e7 6906#ifdef CONFIG_IWLWIFI_DEBUG
fed9017e 6907 driver_remove_file(&iwl_driver.driver, &driver_attr_debug_level);
b481de9c 6908#endif
fed9017e 6909 pci_unregister_driver(&iwl_driver);
897e1cf2 6910 iwl4965_rate_control_unregister();
b481de9c
ZY		 6911}
6912
bb8c093b
CH		 6913module_exit(iwl4965_exit);
6914module_init(iwl4965_init);
Linux kernel - Deliverables
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