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iwlwifi: remove 4956 form iwl4965_tx_cmd
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl4965-base.c
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
4 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
25 * James P. Ketrenos <ipw2100-admin@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/version.h>
33 #include <linux/init.h>
34 #include <linux/pci.h>
35 #include <linux/dma-mapping.h>
36 #include <linux/delay.h>
37 #include <linux/skbuff.h>
38 #include <linux/netdevice.h>
39 #include <linux/wireless.h>
40 #include <linux/firmware.h>
41 #include <linux/etherdevice.h>
42 #include <linux/if_arp.h>
43
44 #include <net/mac80211.h>
45
46 #include <asm/div64.h>
47
48 #include "iwl-eeprom.h"
49 #include "iwl-dev.h"
50 #include "iwl-core.h"
51 #include "iwl-io.h"
52 #include "iwl-helpers.h"
53 #include "iwl-sta.h"
54 #include "iwl-calib.h"
55
56 static int iwl_txq_update_write_ptr(struct iwl_priv *priv,
57 struct iwl_tx_queue *txq);
58
59 /******************************************************************************
60 *
61 * module boiler plate
62 *
63 ******************************************************************************/
64
65 /*
66 * module name, copyright, version, etc.
67 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
68 */
69
70 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
71
72 #ifdef CONFIG_IWLWIFI_DEBUG
73 #define VD "d"
74 #else
75 #define VD
76 #endif
77
78 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
79 #define VS "s"
80 #else
81 #define VS
82 #endif
83
84 #define DRV_VERSION IWLWIFI_VERSION VD VS
85
86
87 MODULE_DESCRIPTION(DRV_DESCRIPTION);
88 MODULE_VERSION(DRV_VERSION);
89 MODULE_AUTHOR(DRV_COPYRIGHT);
90 MODULE_LICENSE("GPL");
91
92 __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
93 {
94 u16 fc = le16_to_cpu(hdr->frame_control);
95 int hdr_len = ieee80211_get_hdrlen(fc);
96
97 if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
98 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
99 return NULL;
100 }
101
102 static const struct ieee80211_supported_band *iwl_get_hw_mode(
103 struct iwl_priv *priv, enum ieee80211_band band)
104 {
105 return priv->hw->wiphy->bands[band];
106 }
107
108 static int iwl4965_is_empty_essid(const char *essid, int essid_len)
109 {
110 /* Single white space is for Linksys APs */
111 if (essid_len == 1 && essid[0] == ' ')
112 return 1;
113
114 /* Otherwise, if the entire essid is 0, we assume it is hidden */
115 while (essid_len) {
116 essid_len--;
117 if (essid[essid_len] != '\0')
118 return 0;
119 }
120
121 return 1;
122 }
123
124 static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
125 {
126 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
127 const char *s = essid;
128 char *d = escaped;
129
130 if (iwl4965_is_empty_essid(essid, essid_len)) {
131 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
132 return escaped;
133 }
134
135 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
136 while (essid_len--) {
137 if (*s == '\0') {
138 *d++ = '\\';
139 *d++ = '0';
140 s++;
141 } else
142 *d++ = *s++;
143 }
144 *d = '\0';
145 return escaped;
146 }
147
148
149 /*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
150 * DMA services
151 *
152 * Theory of operation
153 *
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.
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 *
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.
172 *
173 * See more detailed info in iwl-4965-hw.h.
174 ***************************************************/
175
176 int iwl_queue_space(const struct iwl_queue *q)
177 {
178 int s = q->read_ptr - q->write_ptr;
179
180 if (q->read_ptr > q->write_ptr)
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
192
193 static inline int iwl_queue_used(const struct iwl_queue *q, int i)
194 {
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);
198 }
199
200 static inline u8 get_cmd_index(struct iwl_queue *q, u32 index, int is_huge)
201 {
202 /* This is for scan command, the big buffer at end of command array */
203 if (is_huge)
204 return q->n_window; /* must be power of 2 */
205
206 /* Otherwise, use normal size buffers */
207 return index & (q->n_window - 1);
208 }
209
210
211 /*************** STATION TABLE MANAGEMENT ****
212 * mac80211 should be examined to determine if sta_info is duplicating
213 * the functionality provided here
214 */
215
216 /**************************************************************/
217
218 #if 0 /* temporary disable till we add real remove station */
219 /**
220 * iwl4965_remove_station - Remove driver's knowledge of station.
221 *
222 * NOTE: This does not remove station from device's station table.
223 */
224 static u8 iwl4965_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
225 {
226 int index = IWL_INVALID_STATION;
227 int i;
228 unsigned long flags;
229
230 spin_lock_irqsave(&priv->sta_lock, flags);
231
232 if (is_ap)
233 index = IWL_AP_ID;
234 else if (is_broadcast_ether_addr(addr))
235 index = priv->hw_params.bcast_sta_id;
236 else
237 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
238 if (priv->stations[i].used &&
239 !compare_ether_addr(priv->stations[i].sta.sta.addr,
240 addr)) {
241 index = i;
242 break;
243 }
244
245 if (unlikely(index == IWL_INVALID_STATION))
246 goto out;
247
248 if (priv->stations[index].used) {
249 priv->stations[index].used = 0;
250 priv->num_stations--;
251 }
252
253 BUG_ON(priv->num_stations < 0);
254
255 out:
256 spin_unlock_irqrestore(&priv->sta_lock, flags);
257 return 0;
258 }
259 #endif
260
261
262
263 /*************** HOST COMMAND QUEUE FUNCTIONS *****/
264
265 /**
266 * iwl4965_enqueue_hcmd - enqueue a uCode command
267 * @priv: device private data point
268 * @cmd: a point to the ucode command structure
269 *
270 * The function returns < 0 values to indicate the operation is
271 * failed. On success, it turns the index (> 0) of command in the
272 * command queue.
273 */
274 int iwl4965_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
275 {
276 struct iwl_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
277 struct iwl_queue *q = &txq->q;
278 struct iwl_tfd_frame *tfd;
279 u32 *control_flags;
280 struct iwl_cmd *out_cmd;
281 u32 idx;
282 u16 fix_size;
283 dma_addr_t phys_addr;
284 int ret;
285 unsigned long flags;
286
287 cmd->len = priv->cfg->ops->utils->get_hcmd_size(cmd->id, cmd->len);
288 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
289
290 /* If any of the command structures end up being larger than
291 * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
292 * we will need to increase the size of the TFD entries */
293 BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
294 !(cmd->meta.flags & CMD_SIZE_HUGE));
295
296 if (iwl_is_rfkill(priv)) {
297 IWL_DEBUG_INFO("Not sending command - RF KILL");
298 return -EIO;
299 }
300
301 if (iwl_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
302 IWL_ERROR("No space for Tx\n");
303 return -ENOSPC;
304 }
305
306 spin_lock_irqsave(&priv->hcmd_lock, flags);
307
308 tfd = &txq->bd[q->write_ptr];
309 memset(tfd, 0, sizeof(*tfd));
310
311 control_flags = (u32 *) tfd;
312
313 idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
314 out_cmd = &txq->cmd[idx];
315
316 out_cmd->hdr.cmd = cmd->id;
317 memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
318 memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
319
320 /* At this point, the out_cmd now has all of the incoming cmd
321 * information */
322
323 out_cmd->hdr.flags = 0;
324 out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
325 INDEX_TO_SEQ(q->write_ptr));
326 if (out_cmd->meta.flags & CMD_SIZE_HUGE)
327 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
328
329 phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
330 offsetof(struct iwl_cmd, hdr);
331 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
332
333 IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
334 "%d bytes at %d[%d]:%d\n",
335 get_cmd_string(out_cmd->hdr.cmd),
336 out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
337 fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
338
339 txq->need_update = 1;
340
341 /* Set up entry in queue's byte count circular buffer */
342 priv->cfg->ops->lib->txq_update_byte_cnt_tbl(priv, txq, 0);
343
344 /* Increment and update queue's write index */
345 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
346 ret = iwl_txq_update_write_ptr(priv, txq);
347
348 spin_unlock_irqrestore(&priv->hcmd_lock, flags);
349 return ret ? ret : idx;
350 }
351
352 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
353 {
354 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
355
356 if (hw_decrypt)
357 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
358 else
359 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
360
361 }
362
363 /**
364 * iwl4965_check_rxon_cmd - validate RXON structure is valid
365 *
366 * NOTE: This is really only useful during development and can eventually
367 * be #ifdef'd out once the driver is stable and folks aren't actively
368 * making changes
369 */
370 static int iwl4965_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
371 {
372 int error = 0;
373 int counter = 1;
374
375 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
376 error |= le32_to_cpu(rxon->flags &
377 (RXON_FLG_TGJ_NARROW_BAND_MSK |
378 RXON_FLG_RADAR_DETECT_MSK));
379 if (error)
380 IWL_WARNING("check 24G fields %d | %d\n",
381 counter++, error);
382 } else {
383 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
384 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
385 if (error)
386 IWL_WARNING("check 52 fields %d | %d\n",
387 counter++, error);
388 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
389 if (error)
390 IWL_WARNING("check 52 CCK %d | %d\n",
391 counter++, error);
392 }
393 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
394 if (error)
395 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
396
397 /* make sure basic rates 6Mbps and 1Mbps are supported */
398 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
399 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
400 if (error)
401 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
402
403 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
404 if (error)
405 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
406
407 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
408 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
409 if (error)
410 IWL_WARNING("check CCK and short slot %d | %d\n",
411 counter++, error);
412
413 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
414 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
415 if (error)
416 IWL_WARNING("check CCK & auto detect %d | %d\n",
417 counter++, error);
418
419 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
420 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
421 if (error)
422 IWL_WARNING("check TGG and auto detect %d | %d\n",
423 counter++, error);
424
425 if (error)
426 IWL_WARNING("Tuning to channel %d\n",
427 le16_to_cpu(rxon->channel));
428
429 if (error) {
430 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
431 return -1;
432 }
433 return 0;
434 }
435
436 /**
437 * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
438 * @priv: staging_rxon is compared to active_rxon
439 *
440 * If the RXON structure is changing enough to require a new tune,
441 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
442 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
443 */
444 static int iwl4965_full_rxon_required(struct iwl_priv *priv)
445 {
446
447 /* These items are only settable from the full RXON command */
448 if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
449 compare_ether_addr(priv->staging_rxon.bssid_addr,
450 priv->active_rxon.bssid_addr) ||
451 compare_ether_addr(priv->staging_rxon.node_addr,
452 priv->active_rxon.node_addr) ||
453 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
454 priv->active_rxon.wlap_bssid_addr) ||
455 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
456 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
457 (priv->staging_rxon.air_propagation !=
458 priv->active_rxon.air_propagation) ||
459 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
460 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
461 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
462 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
463 (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
464 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
465 return 1;
466
467 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
468 * be updated with the RXON_ASSOC command -- however only some
469 * flag transitions are allowed using RXON_ASSOC */
470
471 /* Check if we are not switching bands */
472 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
473 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
474 return 1;
475
476 /* Check if we are switching association toggle */
477 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
478 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
479 return 1;
480
481 return 0;
482 }
483
484 /**
485 * iwl4965_commit_rxon - commit staging_rxon to hardware
486 *
487 * The RXON command in staging_rxon is committed to the hardware and
488 * the active_rxon structure is updated with the new data. This
489 * function correctly transitions out of the RXON_ASSOC_MSK state if
490 * a HW tune is required based on the RXON structure changes.
491 */
492 static int iwl4965_commit_rxon(struct iwl_priv *priv)
493 {
494 /* cast away the const for active_rxon in this function */
495 struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
496 DECLARE_MAC_BUF(mac);
497 int rc = 0;
498
499 if (!iwl_is_alive(priv))
500 return -1;
501
502 /* always get timestamp with Rx frame */
503 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
504
505 rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
506 if (rc) {
507 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
508 return -EINVAL;
509 }
510
511 /* If we don't need to send a full RXON, we can use
512 * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
513 * and other flags for the current radio configuration. */
514 if (!iwl4965_full_rxon_required(priv)) {
515 rc = iwl_send_rxon_assoc(priv);
516 if (rc) {
517 IWL_ERROR("Error setting RXON_ASSOC "
518 "configuration (%d).\n", rc);
519 return rc;
520 }
521
522 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
523
524 return 0;
525 }
526
527 /* station table will be cleared */
528 priv->assoc_station_added = 0;
529
530 /* If we are currently associated and the new config requires
531 * an RXON_ASSOC and the new config wants the associated mask enabled,
532 * we must clear the associated from the active configuration
533 * before we apply the new config */
534 if (iwl_is_associated(priv) &&
535 (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
536 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
537 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
538
539 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
540 sizeof(struct iwl_rxon_cmd),
541 &priv->active_rxon);
542
543 /* If the mask clearing failed then we set
544 * active_rxon back to what it was previously */
545 if (rc) {
546 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
547 IWL_ERROR("Error clearing ASSOC_MSK on current "
548 "configuration (%d).\n", rc);
549 return rc;
550 }
551 }
552
553 IWL_DEBUG_INFO("Sending RXON\n"
554 "* with%s RXON_FILTER_ASSOC_MSK\n"
555 "* channel = %d\n"
556 "* bssid = %s\n",
557 ((priv->staging_rxon.filter_flags &
558 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
559 le16_to_cpu(priv->staging_rxon.channel),
560 print_mac(mac, priv->staging_rxon.bssid_addr));
561
562 iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
563 /* Apply the new configuration */
564 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
565 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
566 if (rc) {
567 IWL_ERROR("Error setting new configuration (%d).\n", rc);
568 return rc;
569 }
570
571 iwlcore_clear_stations_table(priv);
572
573 if (!priv->error_recovering)
574 priv->start_calib = 0;
575
576 iwl_init_sensitivity(priv);
577
578 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
579
580 /* If we issue a new RXON command which required a tune then we must
581 * send a new TXPOWER command or we won't be able to Tx any frames */
582 rc = iwl4965_hw_reg_send_txpower(priv);
583 if (rc) {
584 IWL_ERROR("Error setting Tx power (%d).\n", rc);
585 return rc;
586 }
587
588 /* Add the broadcast address so we can send broadcast frames */
589 if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
590 IWL_INVALID_STATION) {
591 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
592 return -EIO;
593 }
594
595 /* If we have set the ASSOC_MSK and we are in BSS mode then
596 * add the IWL_AP_ID to the station rate table */
597 if (iwl_is_associated(priv) &&
598 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
599 if (iwl_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
600 == IWL_INVALID_STATION) {
601 IWL_ERROR("Error adding AP address for transmit.\n");
602 return -EIO;
603 }
604 priv->assoc_station_added = 1;
605 if (priv->default_wep_key &&
606 iwl_send_static_wepkey_cmd(priv, 0))
607 IWL_ERROR("Could not send WEP static key.\n");
608 }
609
610 return 0;
611 }
612
613 void iwl4965_update_chain_flags(struct iwl_priv *priv)
614 {
615
616 iwl_set_rxon_chain(priv);
617 iwl4965_commit_rxon(priv);
618 }
619
620 static int iwl4965_send_bt_config(struct iwl_priv *priv)
621 {
622 struct iwl4965_bt_cmd bt_cmd = {
623 .flags = 3,
624 .lead_time = 0xAA,
625 .max_kill = 1,
626 .kill_ack_mask = 0,
627 .kill_cts_mask = 0,
628 };
629
630 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
631 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
632 }
633
634 static int iwl4965_send_scan_abort(struct iwl_priv *priv)
635 {
636 int ret = 0;
637 struct iwl_rx_packet *res;
638 struct iwl_host_cmd cmd = {
639 .id = REPLY_SCAN_ABORT_CMD,
640 .meta.flags = CMD_WANT_SKB,
641 };
642
643 /* If there isn't a scan actively going on in the hardware
644 * then we are in between scan bands and not actually
645 * actively scanning, so don't send the abort command */
646 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
647 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
648 return 0;
649 }
650
651 ret = iwl_send_cmd_sync(priv, &cmd);
652 if (ret) {
653 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
654 return ret;
655 }
656
657 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
658 if (res->u.status != CAN_ABORT_STATUS) {
659 /* The scan abort will return 1 for success or
660 * 2 for "failure". A failure condition can be
661 * due to simply not being in an active scan which
662 * can occur if we send the scan abort before we
663 * the microcode has notified us that a scan is
664 * completed. */
665 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
666 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
667 clear_bit(STATUS_SCAN_HW, &priv->status);
668 }
669
670 dev_kfree_skb_any(cmd.meta.u.skb);
671
672 return ret;
673 }
674
675 /*
676 * CARD_STATE_CMD
677 *
678 * Use: Sets the device's internal card state to enable, disable, or halt
679 *
680 * When in the 'enable' state the card operates as normal.
681 * When in the 'disable' state, the card enters into a low power mode.
682 * When in the 'halt' state, the card is shut down and must be fully
683 * restarted to come back on.
684 */
685 static int iwl4965_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
686 {
687 struct iwl_host_cmd cmd = {
688 .id = REPLY_CARD_STATE_CMD,
689 .len = sizeof(u32),
690 .data = &flags,
691 .meta.flags = meta_flag,
692 };
693
694 return iwl_send_cmd(priv, &cmd);
695 }
696
697 static void iwl_clear_free_frames(struct iwl_priv *priv)
698 {
699 struct list_head *element;
700
701 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
702 priv->frames_count);
703
704 while (!list_empty(&priv->free_frames)) {
705 element = priv->free_frames.next;
706 list_del(element);
707 kfree(list_entry(element, struct iwl_frame, list));
708 priv->frames_count--;
709 }
710
711 if (priv->frames_count) {
712 IWL_WARNING("%d frames still in use. Did we lose one?\n",
713 priv->frames_count);
714 priv->frames_count = 0;
715 }
716 }
717
718 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
719 {
720 struct iwl_frame *frame;
721 struct list_head *element;
722 if (list_empty(&priv->free_frames)) {
723 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
724 if (!frame) {
725 IWL_ERROR("Could not allocate frame!\n");
726 return NULL;
727 }
728
729 priv->frames_count++;
730 return frame;
731 }
732
733 element = priv->free_frames.next;
734 list_del(element);
735 return list_entry(element, struct iwl_frame, list);
736 }
737
738 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
739 {
740 memset(frame, 0, sizeof(*frame));
741 list_add(&frame->list, &priv->free_frames);
742 }
743
744 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
745 struct ieee80211_hdr *hdr,
746 const u8 *dest, int left)
747 {
748
749 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
750 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
751 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
752 return 0;
753
754 if (priv->ibss_beacon->len > left)
755 return 0;
756
757 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
758
759 return priv->ibss_beacon->len;
760 }
761
762 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
763 {
764 int i;
765 int rate_mask;
766
767 /* Set rate mask*/
768 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
769 rate_mask = priv->active_rate_basic & 0xF;
770 else
771 rate_mask = priv->active_rate_basic & 0xFF0;
772
773 /* Find lowest valid rate */
774 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
775 i = iwl_rates[i].next_ieee) {
776 if (rate_mask & (1 << i))
777 return iwl_rates[i].plcp;
778 }
779
780 /* No valid rate was found. Assign the lowest one */
781 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
782 return IWL_RATE_1M_PLCP;
783 else
784 return IWL_RATE_6M_PLCP;
785 }
786
787 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
788 {
789 struct iwl_frame *frame;
790 unsigned int frame_size;
791 int rc;
792 u8 rate;
793
794 frame = iwl_get_free_frame(priv);
795
796 if (!frame) {
797 IWL_ERROR("Could not obtain free frame buffer for beacon "
798 "command.\n");
799 return -ENOMEM;
800 }
801
802 rate = iwl4965_rate_get_lowest_plcp(priv);
803
804 frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
805
806 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
807 &frame->u.cmd[0]);
808
809 iwl_free_frame(priv, frame);
810
811 return rc;
812 }
813
814 /******************************************************************************
815 *
816 * Misc. internal state and helper functions
817 *
818 ******************************************************************************/
819
820 /**
821 * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
822 *
823 * return : set the bit for each supported rate insert in ie
824 */
825 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
826 u16 basic_rate, int *left)
827 {
828 u16 ret_rates = 0, bit;
829 int i;
830 u8 *cnt = ie;
831 u8 *rates = ie + 1;
832
833 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
834 if (bit & supported_rate) {
835 ret_rates |= bit;
836 rates[*cnt] = iwl_rates[i].ieee |
837 ((bit & basic_rate) ? 0x80 : 0x00);
838 (*cnt)++;
839 (*left)--;
840 if ((*left <= 0) ||
841 (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
842 break;
843 }
844 }
845
846 return ret_rates;
847 }
848
849 #ifdef CONFIG_IWL4965_HT
850 static void iwl4965_ht_conf(struct iwl_priv *priv,
851 struct ieee80211_bss_conf *bss_conf)
852 {
853 struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
854 struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
855 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
856
857 IWL_DEBUG_MAC80211("enter: \n");
858
859 iwl_conf->is_ht = bss_conf->assoc_ht;
860
861 if (!iwl_conf->is_ht)
862 return;
863
864 priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
865
866 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
867 iwl_conf->sgf |= 0x1;
868 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
869 iwl_conf->sgf |= 0x2;
870
871 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
872 iwl_conf->max_amsdu_size =
873 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
874
875 iwl_conf->supported_chan_width =
876 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
877 iwl_conf->extension_chan_offset =
878 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
879 /* If no above or below channel supplied disable FAT channel */
880 if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
881 iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
882 iwl_conf->supported_chan_width = 0;
883
884 iwl_conf->tx_mimo_ps_mode =
885 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
886 memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
887
888 iwl_conf->control_channel = ht_bss_conf->primary_channel;
889 iwl_conf->tx_chan_width =
890 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
891 iwl_conf->ht_protection =
892 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
893 iwl_conf->non_GF_STA_present =
894 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
895
896 IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
897 IWL_DEBUG_MAC80211("leave\n");
898 }
899
900 static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
901 u8 *pos, int *left)
902 {
903 struct ieee80211_ht_cap *ht_cap;
904
905 if (!sband || !sband->ht_info.ht_supported)
906 return;
907
908 if (*left < sizeof(struct ieee80211_ht_cap))
909 return;
910
911 *pos++ = sizeof(struct ieee80211_ht_cap);
912 ht_cap = (struct ieee80211_ht_cap *) pos;
913
914 ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
915 memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
916 ht_cap->ampdu_params_info =
917 (sband->ht_info.ampdu_factor & IEEE80211_HT_CAP_AMPDU_FACTOR) |
918 ((sband->ht_info.ampdu_density << 2) &
919 IEEE80211_HT_CAP_AMPDU_DENSITY);
920 *left -= sizeof(struct ieee80211_ht_cap);
921 }
922 #else
923 static inline void iwl4965_ht_conf(struct iwl_priv *priv,
924 struct ieee80211_bss_conf *bss_conf)
925 {
926 }
927 static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
928 u8 *pos, int *left)
929 {
930 }
931 #endif
932
933
934 /**
935 * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
936 */
937 static u16 iwl4965_fill_probe_req(struct iwl_priv *priv,
938 enum ieee80211_band band,
939 struct ieee80211_mgmt *frame,
940 int left, int is_direct)
941 {
942 int len = 0;
943 u8 *pos = NULL;
944 u16 active_rates, ret_rates, cck_rates, active_rate_basic;
945 const struct ieee80211_supported_band *sband =
946 iwl_get_hw_mode(priv, band);
947
948 /* Make sure there is enough space for the probe request,
949 * two mandatory IEs and the data */
950 left -= 24;
951 if (left < 0)
952 return 0;
953 len += 24;
954
955 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
956 memcpy(frame->da, iwl_bcast_addr, ETH_ALEN);
957 memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
958 memcpy(frame->bssid, iwl_bcast_addr, ETH_ALEN);
959 frame->seq_ctrl = 0;
960
961 /* fill in our indirect SSID IE */
962 /* ...next IE... */
963
964 left -= 2;
965 if (left < 0)
966 return 0;
967 len += 2;
968 pos = &(frame->u.probe_req.variable[0]);
969 *pos++ = WLAN_EID_SSID;
970 *pos++ = 0;
971
972 /* fill in our direct SSID IE... */
973 if (is_direct) {
974 /* ...next IE... */
975 left -= 2 + priv->essid_len;
976 if (left < 0)
977 return 0;
978 /* ... fill it in... */
979 *pos++ = WLAN_EID_SSID;
980 *pos++ = priv->essid_len;
981 memcpy(pos, priv->essid, priv->essid_len);
982 pos += priv->essid_len;
983 len += 2 + priv->essid_len;
984 }
985
986 /* fill in supported rate */
987 /* ...next IE... */
988 left -= 2;
989 if (left < 0)
990 return 0;
991
992 /* ... fill it in... */
993 *pos++ = WLAN_EID_SUPP_RATES;
994 *pos = 0;
995
996 /* exclude 60M rate */
997 active_rates = priv->rates_mask;
998 active_rates &= ~IWL_RATE_60M_MASK;
999
1000 active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
1001
1002 cck_rates = IWL_CCK_RATES_MASK & active_rates;
1003 ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
1004 active_rate_basic, &left);
1005 active_rates &= ~ret_rates;
1006
1007 ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
1008 active_rate_basic, &left);
1009 active_rates &= ~ret_rates;
1010
1011 len += 2 + *pos;
1012 pos += (*pos) + 1;
1013 if (active_rates == 0)
1014 goto fill_end;
1015
1016 /* fill in supported extended rate */
1017 /* ...next IE... */
1018 left -= 2;
1019 if (left < 0)
1020 return 0;
1021 /* ... fill it in... */
1022 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1023 *pos = 0;
1024 iwl4965_supported_rate_to_ie(pos, active_rates,
1025 active_rate_basic, &left);
1026 if (*pos > 0)
1027 len += 2 + *pos;
1028
1029 fill_end:
1030 /* fill in HT IE */
1031 left -= 2;
1032 if (left < 0)
1033 return 0;
1034
1035 *pos++ = WLAN_EID_HT_CAPABILITY;
1036 *pos = 0;
1037
1038 iwl_ht_cap_to_ie(sband, pos, &left);
1039
1040 if (*pos > 0)
1041 len += 2 + *pos;
1042 return (u16)len;
1043 }
1044
1045 /*
1046 * QoS support
1047 */
1048 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
1049 struct iwl4965_qosparam_cmd *qos)
1050 {
1051
1052 return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1053 sizeof(struct iwl4965_qosparam_cmd), qos);
1054 }
1055
1056 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
1057 {
1058 unsigned long flags;
1059
1060 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1061 return;
1062
1063 if (!priv->qos_data.qos_enable)
1064 return;
1065
1066 spin_lock_irqsave(&priv->lock, flags);
1067 priv->qos_data.def_qos_parm.qos_flags = 0;
1068
1069 if (priv->qos_data.qos_cap.q_AP.queue_request &&
1070 !priv->qos_data.qos_cap.q_AP.txop_request)
1071 priv->qos_data.def_qos_parm.qos_flags |=
1072 QOS_PARAM_FLG_TXOP_TYPE_MSK;
1073 if (priv->qos_data.qos_active)
1074 priv->qos_data.def_qos_parm.qos_flags |=
1075 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1076
1077 #ifdef CONFIG_IWL4965_HT
1078 if (priv->current_ht_config.is_ht)
1079 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
1080 #endif /* CONFIG_IWL4965_HT */
1081
1082 spin_unlock_irqrestore(&priv->lock, flags);
1083
1084 if (force || iwl_is_associated(priv)) {
1085 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
1086 priv->qos_data.qos_active,
1087 priv->qos_data.def_qos_parm.qos_flags);
1088
1089 iwl4965_send_qos_params_command(priv,
1090 &(priv->qos_data.def_qos_parm));
1091 }
1092 }
1093
1094 int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
1095 {
1096 /* Filter incoming packets to determine if they are targeted toward
1097 * this network, discarding packets coming from ourselves */
1098 switch (priv->iw_mode) {
1099 case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
1100 /* packets from our adapter are dropped (echo) */
1101 if (!compare_ether_addr(header->addr2, priv->mac_addr))
1102 return 0;
1103 /* {broad,multi}cast packets to our IBSS go through */
1104 if (is_multicast_ether_addr(header->addr1))
1105 return !compare_ether_addr(header->addr3, priv->bssid);
1106 /* packets to our adapter go through */
1107 return !compare_ether_addr(header->addr1, priv->mac_addr);
1108 case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
1109 /* packets from our adapter are dropped (echo) */
1110 if (!compare_ether_addr(header->addr3, priv->mac_addr))
1111 return 0;
1112 /* {broad,multi}cast packets to our BSS go through */
1113 if (is_multicast_ether_addr(header->addr1))
1114 return !compare_ether_addr(header->addr2, priv->bssid);
1115 /* packets to our adapter go through */
1116 return !compare_ether_addr(header->addr1, priv->mac_addr);
1117 default:
1118 break;
1119 }
1120
1121 return 1;
1122 }
1123
1124 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1125
1126 static const char *iwl4965_get_tx_fail_reason(u32 status)
1127 {
1128 switch (status & TX_STATUS_MSK) {
1129 case TX_STATUS_SUCCESS:
1130 return "SUCCESS";
1131 TX_STATUS_ENTRY(SHORT_LIMIT);
1132 TX_STATUS_ENTRY(LONG_LIMIT);
1133 TX_STATUS_ENTRY(FIFO_UNDERRUN);
1134 TX_STATUS_ENTRY(MGMNT_ABORT);
1135 TX_STATUS_ENTRY(NEXT_FRAG);
1136 TX_STATUS_ENTRY(LIFE_EXPIRE);
1137 TX_STATUS_ENTRY(DEST_PS);
1138 TX_STATUS_ENTRY(ABORTED);
1139 TX_STATUS_ENTRY(BT_RETRY);
1140 TX_STATUS_ENTRY(STA_INVALID);
1141 TX_STATUS_ENTRY(FRAG_DROPPED);
1142 TX_STATUS_ENTRY(TID_DISABLE);
1143 TX_STATUS_ENTRY(FRAME_FLUSHED);
1144 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
1145 TX_STATUS_ENTRY(TX_LOCKED);
1146 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
1147 }
1148
1149 return "UNKNOWN";
1150 }
1151
1152 /**
1153 * iwl4965_scan_cancel - Cancel any currently executing HW scan
1154 *
1155 * NOTE: priv->mutex is not required before calling this function
1156 */
1157 static int iwl4965_scan_cancel(struct iwl_priv *priv)
1158 {
1159 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1160 clear_bit(STATUS_SCANNING, &priv->status);
1161 return 0;
1162 }
1163
1164 if (test_bit(STATUS_SCANNING, &priv->status)) {
1165 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1166 IWL_DEBUG_SCAN("Queuing scan abort.\n");
1167 set_bit(STATUS_SCAN_ABORTING, &priv->status);
1168 queue_work(priv->workqueue, &priv->abort_scan);
1169
1170 } else
1171 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
1172
1173 return test_bit(STATUS_SCANNING, &priv->status);
1174 }
1175
1176 return 0;
1177 }
1178
1179 /**
1180 * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
1181 * @ms: amount of time to wait (in milliseconds) for scan to abort
1182 *
1183 * NOTE: priv->mutex must be held before calling this function
1184 */
1185 static int iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
1186 {
1187 unsigned long now = jiffies;
1188 int ret;
1189
1190 ret = iwl4965_scan_cancel(priv);
1191 if (ret && ms) {
1192 mutex_unlock(&priv->mutex);
1193 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
1194 test_bit(STATUS_SCANNING, &priv->status))
1195 msleep(1);
1196 mutex_lock(&priv->mutex);
1197
1198 return test_bit(STATUS_SCANNING, &priv->status);
1199 }
1200
1201 return ret;
1202 }
1203
1204 static void iwl4965_sequence_reset(struct iwl_priv *priv)
1205 {
1206 /* Reset ieee stats */
1207
1208 /* We don't reset the net_device_stats (ieee->stats) on
1209 * re-association */
1210
1211 priv->last_seq_num = -1;
1212 priv->last_frag_num = -1;
1213 priv->last_packet_time = 0;
1214
1215 iwl4965_scan_cancel(priv);
1216 }
1217
1218 #define MAX_UCODE_BEACON_INTERVAL 4096
1219 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
1220
1221 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
1222 {
1223 u16 new_val = 0;
1224 u16 beacon_factor = 0;
1225
1226 beacon_factor =
1227 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
1228 / MAX_UCODE_BEACON_INTERVAL;
1229 new_val = beacon_val / beacon_factor;
1230
1231 return cpu_to_le16(new_val);
1232 }
1233
1234 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
1235 {
1236 u64 interval_tm_unit;
1237 u64 tsf, result;
1238 unsigned long flags;
1239 struct ieee80211_conf *conf = NULL;
1240 u16 beacon_int = 0;
1241
1242 conf = ieee80211_get_hw_conf(priv->hw);
1243
1244 spin_lock_irqsave(&priv->lock, flags);
1245 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
1246 priv->rxon_timing.timestamp.dw[0] =
1247 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
1248
1249 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1250
1251 tsf = priv->timestamp;
1252
1253 beacon_int = priv->beacon_int;
1254 spin_unlock_irqrestore(&priv->lock, flags);
1255
1256 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
1257 if (beacon_int == 0) {
1258 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1259 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1260 } else {
1261 priv->rxon_timing.beacon_interval =
1262 cpu_to_le16(beacon_int);
1263 priv->rxon_timing.beacon_interval =
1264 iwl4965_adjust_beacon_interval(
1265 le16_to_cpu(priv->rxon_timing.beacon_interval));
1266 }
1267
1268 priv->rxon_timing.atim_window = 0;
1269 } else {
1270 priv->rxon_timing.beacon_interval =
1271 iwl4965_adjust_beacon_interval(conf->beacon_int);
1272 /* TODO: we need to get atim_window from upper stack
1273 * for now we set to 0 */
1274 priv->rxon_timing.atim_window = 0;
1275 }
1276
1277 interval_tm_unit =
1278 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
1279 result = do_div(tsf, interval_tm_unit);
1280 priv->rxon_timing.beacon_init_val =
1281 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
1282
1283 IWL_DEBUG_ASSOC
1284 ("beacon interval %d beacon timer %d beacon tim %d\n",
1285 le16_to_cpu(priv->rxon_timing.beacon_interval),
1286 le32_to_cpu(priv->rxon_timing.beacon_init_val),
1287 le16_to_cpu(priv->rxon_timing.atim_window));
1288 }
1289
1290 static int iwl4965_scan_initiate(struct iwl_priv *priv)
1291 {
1292 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1293 IWL_ERROR("APs don't scan.\n");
1294 return 0;
1295 }
1296
1297 if (!iwl_is_ready_rf(priv)) {
1298 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1299 return -EIO;
1300 }
1301
1302 if (test_bit(STATUS_SCANNING, &priv->status)) {
1303 IWL_DEBUG_SCAN("Scan already in progress.\n");
1304 return -EAGAIN;
1305 }
1306
1307 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1308 IWL_DEBUG_SCAN("Scan request while abort pending. "
1309 "Queuing.\n");
1310 return -EAGAIN;
1311 }
1312
1313 IWL_DEBUG_INFO("Starting scan...\n");
1314 priv->scan_bands = 2;
1315 set_bit(STATUS_SCANNING, &priv->status);
1316 priv->scan_start = jiffies;
1317 priv->scan_pass_start = priv->scan_start;
1318
1319 queue_work(priv->workqueue, &priv->request_scan);
1320
1321 return 0;
1322 }
1323
1324
1325 static void iwl4965_set_flags_for_phymode(struct iwl_priv *priv,
1326 enum ieee80211_band band)
1327 {
1328 if (band == IEEE80211_BAND_5GHZ) {
1329 priv->staging_rxon.flags &=
1330 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1331 | RXON_FLG_CCK_MSK);
1332 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1333 } else {
1334 /* Copied from iwl4965_post_associate() */
1335 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1336 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1337 else
1338 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1339
1340 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
1341 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1342
1343 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1344 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1345 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1346 }
1347 }
1348
1349 /*
1350 * initialize rxon structure with default values from eeprom
1351 */
1352 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
1353 {
1354 const struct iwl_channel_info *ch_info;
1355
1356 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1357
1358 switch (priv->iw_mode) {
1359 case IEEE80211_IF_TYPE_AP:
1360 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1361 break;
1362
1363 case IEEE80211_IF_TYPE_STA:
1364 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1365 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1366 break;
1367
1368 case IEEE80211_IF_TYPE_IBSS:
1369 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1370 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1371 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1372 RXON_FILTER_ACCEPT_GRP_MSK;
1373 break;
1374
1375 case IEEE80211_IF_TYPE_MNTR:
1376 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
1377 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
1378 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
1379 break;
1380 default:
1381 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
1382 break;
1383 }
1384
1385 #if 0
1386 /* TODO: Figure out when short_preamble would be set and cache from
1387 * that */
1388 if (!hw_to_local(priv->hw)->short_preamble)
1389 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1390 else
1391 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1392 #endif
1393
1394 ch_info = iwl_get_channel_info(priv, priv->band,
1395 le16_to_cpu(priv->staging_rxon.channel));
1396
1397 if (!ch_info)
1398 ch_info = &priv->channel_info[0];
1399
1400 /*
1401 * in some case A channels are all non IBSS
1402 * in this case force B/G channel
1403 */
1404 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
1405 !(is_channel_ibss(ch_info)))
1406 ch_info = &priv->channel_info[0];
1407
1408 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1409 priv->band = ch_info->band;
1410
1411 iwl4965_set_flags_for_phymode(priv, priv->band);
1412
1413 priv->staging_rxon.ofdm_basic_rates =
1414 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1415 priv->staging_rxon.cck_basic_rates =
1416 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1417
1418 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
1419 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
1420 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1421 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1422 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1423 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1424 iwl_set_rxon_chain(priv);
1425 }
1426
1427 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
1428 {
1429 if (mode == IEEE80211_IF_TYPE_IBSS) {
1430 const struct iwl_channel_info *ch_info;
1431
1432 ch_info = iwl_get_channel_info(priv,
1433 priv->band,
1434 le16_to_cpu(priv->staging_rxon.channel));
1435
1436 if (!ch_info || !is_channel_ibss(ch_info)) {
1437 IWL_ERROR("channel %d not IBSS channel\n",
1438 le16_to_cpu(priv->staging_rxon.channel));
1439 return -EINVAL;
1440 }
1441 }
1442
1443 priv->iw_mode = mode;
1444
1445 iwl4965_connection_init_rx_config(priv);
1446 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1447
1448 iwlcore_clear_stations_table(priv);
1449
1450 /* dont commit rxon if rf-kill is on*/
1451 if (!iwl_is_ready_rf(priv))
1452 return -EAGAIN;
1453
1454 cancel_delayed_work(&priv->scan_check);
1455 if (iwl4965_scan_cancel_timeout(priv, 100)) {
1456 IWL_WARNING("Aborted scan still in progress after 100ms\n");
1457 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
1458 return -EAGAIN;
1459 }
1460
1461 iwl4965_commit_rxon(priv);
1462
1463 return 0;
1464 }
1465
1466 static void iwl4965_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
1467 struct ieee80211_tx_control *ctl,
1468 struct iwl_cmd *cmd,
1469 struct sk_buff *skb_frag,
1470 int sta_id)
1471 {
1472 struct iwl_hw_key *keyinfo = &priv->stations[sta_id].keyinfo;
1473 struct iwl_wep_key *wepkey;
1474 int keyidx = 0;
1475
1476 BUG_ON(ctl->hw_key->hw_key_idx > 3);
1477
1478 switch (keyinfo->alg) {
1479 case ALG_CCMP:
1480 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
1481 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
1482 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
1483 cmd->cmd.tx.tx_flags |= TX_CMD_FLG_AGG_CCMP_MSK;
1484 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
1485 break;
1486
1487 case ALG_TKIP:
1488 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
1489 ieee80211_get_tkip_key(keyinfo->conf, skb_frag,
1490 IEEE80211_TKIP_P2_KEY, cmd->cmd.tx.key);
1491 IWL_DEBUG_TX("tx_cmd with tkip hwcrypto\n");
1492 break;
1493
1494 case ALG_WEP:
1495 wepkey = &priv->wep_keys[ctl->hw_key->hw_key_idx];
1496 cmd->cmd.tx.sec_ctl = 0;
1497 if (priv->default_wep_key) {
1498 /* the WEP key was sent as static */
1499 keyidx = ctl->hw_key->hw_key_idx;
1500 memcpy(&cmd->cmd.tx.key[3], wepkey->key,
1501 wepkey->key_size);
1502 if (wepkey->key_size == WEP_KEY_LEN_128)
1503 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
1504 } else {
1505 /* the WEP key was sent as dynamic */
1506 keyidx = keyinfo->keyidx;
1507 memcpy(&cmd->cmd.tx.key[3], keyinfo->key,
1508 keyinfo->keylen);
1509 if (keyinfo->keylen == WEP_KEY_LEN_128)
1510 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
1511 }
1512
1513 cmd->cmd.tx.sec_ctl |= (TX_CMD_SEC_WEP |
1514 (keyidx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT);
1515
1516 IWL_DEBUG_TX("Configuring packet for WEP encryption "
1517 "with key %d\n", keyidx);
1518 break;
1519
1520 default:
1521 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
1522 break;
1523 }
1524 }
1525
1526 /*
1527 * handle build REPLY_TX command notification.
1528 */
1529 static void iwl4965_build_tx_cmd_basic(struct iwl_priv *priv,
1530 struct iwl_cmd *cmd,
1531 struct ieee80211_tx_control *ctrl,
1532 struct ieee80211_hdr *hdr,
1533 int is_unicast, u8 std_id)
1534 {
1535 __le16 *qc;
1536 u16 fc = le16_to_cpu(hdr->frame_control);
1537 __le32 tx_flags = cmd->cmd.tx.tx_flags;
1538
1539 cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
1540 if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
1541 tx_flags |= TX_CMD_FLG_ACK_MSK;
1542 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
1543 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
1544 if (ieee80211_is_probe_response(fc) &&
1545 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
1546 tx_flags |= TX_CMD_FLG_TSF_MSK;
1547 } else {
1548 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
1549 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
1550 }
1551
1552 if (ieee80211_is_back_request(fc))
1553 tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK;
1554
1555
1556 cmd->cmd.tx.sta_id = std_id;
1557 if (ieee80211_get_morefrag(hdr))
1558 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
1559
1560 qc = ieee80211_get_qos_ctrl(hdr);
1561 if (qc) {
1562 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
1563 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
1564 } else
1565 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
1566
1567 if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
1568 tx_flags |= TX_CMD_FLG_RTS_MSK;
1569 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
1570 } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
1571 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
1572 tx_flags |= TX_CMD_FLG_CTS_MSK;
1573 }
1574
1575 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
1576 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
1577
1578 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
1579 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
1580 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
1581 (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
1582 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
1583 else
1584 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
1585 } else {
1586 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
1587 }
1588
1589 cmd->cmd.tx.driver_txop = 0;
1590 cmd->cmd.tx.tx_flags = tx_flags;
1591 cmd->cmd.tx.next_frame_len = 0;
1592 }
1593 static void iwl_update_tx_stats(struct iwl_priv *priv, u16 fc, u16 len)
1594 {
1595 /* 0 - mgmt, 1 - cnt, 2 - data */
1596 int idx = (fc & IEEE80211_FCTL_FTYPE) >> 2;
1597 priv->tx_stats[idx].cnt++;
1598 priv->tx_stats[idx].bytes += len;
1599 }
1600 /*
1601 * start REPLY_TX command process
1602 */
1603 static int iwl4965_tx_skb(struct iwl_priv *priv,
1604 struct sk_buff *skb, struct ieee80211_tx_control *ctl)
1605 {
1606 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1607 struct iwl_tfd_frame *tfd;
1608 u32 *control_flags;
1609 int txq_id = ctl->queue;
1610 struct iwl_tx_queue *txq = NULL;
1611 struct iwl_queue *q = NULL;
1612 dma_addr_t phys_addr;
1613 dma_addr_t txcmd_phys;
1614 dma_addr_t scratch_phys;
1615 struct iwl_cmd *out_cmd = NULL;
1616 u16 len, idx, len_org;
1617 u8 id, hdr_len, unicast;
1618 u8 sta_id;
1619 u16 seq_number = 0;
1620 u16 fc;
1621 __le16 *qc;
1622 u8 wait_write_ptr = 0;
1623 unsigned long flags;
1624 int rc;
1625
1626 spin_lock_irqsave(&priv->lock, flags);
1627 if (iwl_is_rfkill(priv)) {
1628 IWL_DEBUG_DROP("Dropping - RF KILL\n");
1629 goto drop_unlock;
1630 }
1631
1632 if (!priv->vif) {
1633 IWL_DEBUG_DROP("Dropping - !priv->vif\n");
1634 goto drop_unlock;
1635 }
1636
1637 if ((ctl->tx_rate->hw_value & 0xFF) == IWL_INVALID_RATE) {
1638 IWL_ERROR("ERROR: No TX rate available.\n");
1639 goto drop_unlock;
1640 }
1641
1642 unicast = !is_multicast_ether_addr(hdr->addr1);
1643 id = 0;
1644
1645 fc = le16_to_cpu(hdr->frame_control);
1646
1647 #ifdef CONFIG_IWLWIFI_DEBUG
1648 if (ieee80211_is_auth(fc))
1649 IWL_DEBUG_TX("Sending AUTH frame\n");
1650 else if (ieee80211_is_assoc_request(fc))
1651 IWL_DEBUG_TX("Sending ASSOC frame\n");
1652 else if (ieee80211_is_reassoc_request(fc))
1653 IWL_DEBUG_TX("Sending REASSOC frame\n");
1654 #endif
1655
1656 /* drop all data frame if we are not associated */
1657 if (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
1658 (!iwl_is_associated(priv) ||
1659 ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id) ||
1660 !priv->assoc_station_added)) {
1661 IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n");
1662 goto drop_unlock;
1663 }
1664
1665 spin_unlock_irqrestore(&priv->lock, flags);
1666
1667 hdr_len = ieee80211_get_hdrlen(fc);
1668
1669 /* Find (or create) index into station table for destination station */
1670 sta_id = iwl_get_sta_id(priv, hdr);
1671 if (sta_id == IWL_INVALID_STATION) {
1672 DECLARE_MAC_BUF(mac);
1673
1674 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
1675 print_mac(mac, hdr->addr1));
1676 goto drop;
1677 }
1678
1679 IWL_DEBUG_TX("station Id %d\n", sta_id);
1680
1681 qc = ieee80211_get_qos_ctrl(hdr);
1682 if (qc) {
1683 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
1684 seq_number = priv->stations[sta_id].tid[tid].seq_number &
1685 IEEE80211_SCTL_SEQ;
1686 hdr->seq_ctrl = cpu_to_le16(seq_number) |
1687 (hdr->seq_ctrl &
1688 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
1689 seq_number += 0x10;
1690 #ifdef CONFIG_IWL4965_HT
1691 /* aggregation is on for this <sta,tid> */
1692 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
1693 txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
1694 priv->stations[sta_id].tid[tid].tfds_in_queue++;
1695 #endif /* CONFIG_IWL4965_HT */
1696 }
1697
1698 /* Descriptor for chosen Tx queue */
1699 txq = &priv->txq[txq_id];
1700 q = &txq->q;
1701
1702 spin_lock_irqsave(&priv->lock, flags);
1703
1704 /* Set up first empty TFD within this queue's circular TFD buffer */
1705 tfd = &txq->bd[q->write_ptr];
1706 memset(tfd, 0, sizeof(*tfd));
1707 control_flags = (u32 *) tfd;
1708 idx = get_cmd_index(q, q->write_ptr, 0);
1709
1710 /* Set up driver data for this TFD */
1711 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
1712 txq->txb[q->write_ptr].skb[0] = skb;
1713 memcpy(&(txq->txb[q->write_ptr].status.control),
1714 ctl, sizeof(struct ieee80211_tx_control));
1715
1716 /* Set up first empty entry in queue's array of Tx/cmd buffers */
1717 out_cmd = &txq->cmd[idx];
1718 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
1719 memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
1720
1721 /*
1722 * Set up the Tx-command (not MAC!) header.
1723 * Store the chosen Tx queue and TFD index within the sequence field;
1724 * after Tx, uCode's Tx response will return this value so driver can
1725 * locate the frame within the tx queue and do post-tx processing.
1726 */
1727 out_cmd->hdr.cmd = REPLY_TX;
1728 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
1729 INDEX_TO_SEQ(q->write_ptr)));
1730
1731 /* Copy MAC header from skb into command buffer */
1732 memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
1733
1734 /*
1735 * Use the first empty entry in this queue's command buffer array
1736 * to contain the Tx command and MAC header concatenated together
1737 * (payload data will be in another buffer).
1738 * Size of this varies, due to varying MAC header length.
1739 * If end is not dword aligned, we'll have 2 extra bytes at the end
1740 * of the MAC header (device reads on dword boundaries).
1741 * We'll tell device about this padding later.
1742 */
1743 len = sizeof(struct iwl_tx_cmd) +
1744 sizeof(struct iwl_cmd_header) + hdr_len;
1745
1746 len_org = len;
1747 len = (len + 3) & ~3;
1748
1749 if (len_org != len)
1750 len_org = 1;
1751 else
1752 len_org = 0;
1753
1754 /* Physical address of this Tx command's header (not MAC header!),
1755 * within command buffer array. */
1756 txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl_cmd) * idx +
1757 offsetof(struct iwl_cmd, hdr);
1758
1759 /* Add buffer containing Tx command and MAC(!) header to TFD's
1760 * first entry */
1761 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
1762
1763 if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
1764 iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, sta_id);
1765
1766 /* Set up TFD's 2nd entry to point directly to remainder of skb,
1767 * if any (802.11 null frames have no payload). */
1768 len = skb->len - hdr_len;
1769 if (len) {
1770 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
1771 len, PCI_DMA_TODEVICE);
1772 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
1773 }
1774
1775 /* Tell 4965 about any 2-byte padding after MAC header */
1776 if (len_org)
1777 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
1778
1779 /* Total # bytes to be transmitted */
1780 len = (u16)skb->len;
1781 out_cmd->cmd.tx.len = cpu_to_le16(len);
1782
1783 /* TODO need this for burst mode later on */
1784 iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
1785
1786 /* set is_hcca to 0; it probably will never be implemented */
1787 iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
1788
1789 iwl_update_tx_stats(priv, fc, len);
1790
1791 scratch_phys = txcmd_phys + sizeof(struct iwl_cmd_header) +
1792 offsetof(struct iwl_tx_cmd, scratch);
1793 out_cmd->cmd.tx.dram_lsb_ptr = cpu_to_le32(scratch_phys);
1794 out_cmd->cmd.tx.dram_msb_ptr = iwl_get_dma_hi_address(scratch_phys);
1795
1796 if (!ieee80211_get_morefrag(hdr)) {
1797 txq->need_update = 1;
1798 if (qc) {
1799 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
1800 priv->stations[sta_id].tid[tid].seq_number = seq_number;
1801 }
1802 } else {
1803 wait_write_ptr = 1;
1804 txq->need_update = 0;
1805 }
1806
1807 iwl_print_hex_dump(priv, IWL_DL_TX, out_cmd->cmd.payload,
1808 sizeof(out_cmd->cmd.tx));
1809
1810 iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
1811 ieee80211_get_hdrlen(fc));
1812
1813 /* Set up entry for this TFD in Tx byte-count array */
1814 priv->cfg->ops->lib->txq_update_byte_cnt_tbl(priv, txq, len);
1815
1816 /* Tell device the write index *just past* this latest filled TFD */
1817 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
1818 rc = iwl_txq_update_write_ptr(priv, txq);
1819 spin_unlock_irqrestore(&priv->lock, flags);
1820
1821 if (rc)
1822 return rc;
1823
1824 if ((iwl_queue_space(q) < q->high_mark)
1825 && priv->mac80211_registered) {
1826 if (wait_write_ptr) {
1827 spin_lock_irqsave(&priv->lock, flags);
1828 txq->need_update = 1;
1829 iwl_txq_update_write_ptr(priv, txq);
1830 spin_unlock_irqrestore(&priv->lock, flags);
1831 }
1832
1833 ieee80211_stop_queue(priv->hw, ctl->queue);
1834 }
1835
1836 return 0;
1837
1838 drop_unlock:
1839 spin_unlock_irqrestore(&priv->lock, flags);
1840 drop:
1841 return -1;
1842 }
1843
1844 static void iwl4965_set_rate(struct iwl_priv *priv)
1845 {
1846 const struct ieee80211_supported_band *hw = NULL;
1847 struct ieee80211_rate *rate;
1848 int i;
1849
1850 hw = iwl_get_hw_mode(priv, priv->band);
1851 if (!hw) {
1852 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
1853 return;
1854 }
1855
1856 priv->active_rate = 0;
1857 priv->active_rate_basic = 0;
1858
1859 for (i = 0; i < hw->n_bitrates; i++) {
1860 rate = &(hw->bitrates[i]);
1861 if (rate->hw_value < IWL_RATE_COUNT)
1862 priv->active_rate |= (1 << rate->hw_value);
1863 }
1864
1865 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
1866 priv->active_rate, priv->active_rate_basic);
1867
1868 /*
1869 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1870 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1871 * OFDM
1872 */
1873 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1874 priv->staging_rxon.cck_basic_rates =
1875 ((priv->active_rate_basic &
1876 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1877 else
1878 priv->staging_rxon.cck_basic_rates =
1879 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1880
1881 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1882 priv->staging_rxon.ofdm_basic_rates =
1883 ((priv->active_rate_basic &
1884 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1885 IWL_FIRST_OFDM_RATE) & 0xFF;
1886 else
1887 priv->staging_rxon.ofdm_basic_rates =
1888 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1889 }
1890
1891 void iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
1892 {
1893 unsigned long flags;
1894
1895 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
1896 return;
1897
1898 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
1899 disable_radio ? "OFF" : "ON");
1900
1901 if (disable_radio) {
1902 iwl4965_scan_cancel(priv);
1903 /* FIXME: This is a workaround for AP */
1904 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
1905 spin_lock_irqsave(&priv->lock, flags);
1906 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1907 CSR_UCODE_SW_BIT_RFKILL);
1908 spin_unlock_irqrestore(&priv->lock, flags);
1909 /* call the host command only if no hw rf-kill set */
1910 if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
1911 iwl_is_ready(priv))
1912 iwl4965_send_card_state(priv,
1913 CARD_STATE_CMD_DISABLE,
1914 0);
1915 set_bit(STATUS_RF_KILL_SW, &priv->status);
1916
1917 /* make sure mac80211 stop sending Tx frame */
1918 if (priv->mac80211_registered)
1919 ieee80211_stop_queues(priv->hw);
1920 }
1921 return;
1922 }
1923
1924 spin_lock_irqsave(&priv->lock, flags);
1925 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1926
1927 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1928 spin_unlock_irqrestore(&priv->lock, flags);
1929
1930 /* wake up ucode */
1931 msleep(10);
1932
1933 spin_lock_irqsave(&priv->lock, flags);
1934 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1935 if (!iwl_grab_nic_access(priv))
1936 iwl_release_nic_access(priv);
1937 spin_unlock_irqrestore(&priv->lock, flags);
1938
1939 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
1940 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
1941 "disabled by HW switch\n");
1942 return;
1943 }
1944
1945 queue_work(priv->workqueue, &priv->restart);
1946 return;
1947 }
1948
1949 #define IWL_PACKET_RETRY_TIME HZ
1950
1951 int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
1952 {
1953 u16 sc = le16_to_cpu(header->seq_ctrl);
1954 u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
1955 u16 frag = sc & IEEE80211_SCTL_FRAG;
1956 u16 *last_seq, *last_frag;
1957 unsigned long *last_time;
1958
1959 switch (priv->iw_mode) {
1960 case IEEE80211_IF_TYPE_IBSS:{
1961 struct list_head *p;
1962 struct iwl4965_ibss_seq *entry = NULL;
1963 u8 *mac = header->addr2;
1964 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
1965
1966 __list_for_each(p, &priv->ibss_mac_hash[index]) {
1967 entry = list_entry(p, struct iwl4965_ibss_seq, list);
1968 if (!compare_ether_addr(entry->mac, mac))
1969 break;
1970 }
1971 if (p == &priv->ibss_mac_hash[index]) {
1972 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
1973 if (!entry) {
1974 IWL_ERROR("Cannot malloc new mac entry\n");
1975 return 0;
1976 }
1977 memcpy(entry->mac, mac, ETH_ALEN);
1978 entry->seq_num = seq;
1979 entry->frag_num = frag;
1980 entry->packet_time = jiffies;
1981 list_add(&entry->list, &priv->ibss_mac_hash[index]);
1982 return 0;
1983 }
1984 last_seq = &entry->seq_num;
1985 last_frag = &entry->frag_num;
1986 last_time = &entry->packet_time;
1987 break;
1988 }
1989 case IEEE80211_IF_TYPE_STA:
1990 last_seq = &priv->last_seq_num;
1991 last_frag = &priv->last_frag_num;
1992 last_time = &priv->last_packet_time;
1993 break;
1994 default:
1995 return 0;
1996 }
1997 if ((*last_seq == seq) &&
1998 time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
1999 if (*last_frag == frag)
2000 goto drop;
2001 if (*last_frag + 1 != frag)
2002 /* out-of-order fragment */
2003 goto drop;
2004 } else
2005 *last_seq = seq;
2006
2007 *last_frag = frag;
2008 *last_time = jiffies;
2009 return 0;
2010
2011 drop:
2012 return 1;
2013 }
2014
2015 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
2016
2017 #include "iwl-spectrum.h"
2018
2019 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
2020 #define BEACON_TIME_MASK_HIGH 0xFF000000
2021 #define TIME_UNIT 1024
2022
2023 /*
2024 * extended beacon time format
2025 * time in usec will be changed into a 32-bit value in 8:24 format
2026 * the high 1 byte is the beacon counts
2027 * the lower 3 bytes is the time in usec within one beacon interval
2028 */
2029
2030 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
2031 {
2032 u32 quot;
2033 u32 rem;
2034 u32 interval = beacon_interval * 1024;
2035
2036 if (!interval || !usec)
2037 return 0;
2038
2039 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
2040 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
2041
2042 return (quot << 24) + rem;
2043 }
2044
2045 /* base is usually what we get from ucode with each received frame,
2046 * the same as HW timer counter counting down
2047 */
2048
2049 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
2050 {
2051 u32 base_low = base & BEACON_TIME_MASK_LOW;
2052 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
2053 u32 interval = beacon_interval * TIME_UNIT;
2054 u32 res = (base & BEACON_TIME_MASK_HIGH) +
2055 (addon & BEACON_TIME_MASK_HIGH);
2056
2057 if (base_low > addon_low)
2058 res += base_low - addon_low;
2059 else if (base_low < addon_low) {
2060 res += interval + base_low - addon_low;
2061 res += (1 << 24);
2062 } else
2063 res += (1 << 24);
2064
2065 return cpu_to_le32(res);
2066 }
2067
2068 static int iwl4965_get_measurement(struct iwl_priv *priv,
2069 struct ieee80211_measurement_params *params,
2070 u8 type)
2071 {
2072 struct iwl4965_spectrum_cmd spectrum;
2073 struct iwl_rx_packet *res;
2074 struct iwl_host_cmd cmd = {
2075 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
2076 .data = (void *)&spectrum,
2077 .meta.flags = CMD_WANT_SKB,
2078 };
2079 u32 add_time = le64_to_cpu(params->start_time);
2080 int rc;
2081 int spectrum_resp_status;
2082 int duration = le16_to_cpu(params->duration);
2083
2084 if (iwl_is_associated(priv))
2085 add_time =
2086 iwl4965_usecs_to_beacons(
2087 le64_to_cpu(params->start_time) - priv->last_tsf,
2088 le16_to_cpu(priv->rxon_timing.beacon_interval));
2089
2090 memset(&spectrum, 0, sizeof(spectrum));
2091
2092 spectrum.channel_count = cpu_to_le16(1);
2093 spectrum.flags =
2094 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
2095 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
2096 cmd.len = sizeof(spectrum);
2097 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
2098
2099 if (iwl_is_associated(priv))
2100 spectrum.start_time =
2101 iwl4965_add_beacon_time(priv->last_beacon_time,
2102 add_time,
2103 le16_to_cpu(priv->rxon_timing.beacon_interval));
2104 else
2105 spectrum.start_time = 0;
2106
2107 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
2108 spectrum.channels[0].channel = params->channel;
2109 spectrum.channels[0].type = type;
2110 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
2111 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
2112 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
2113
2114 rc = iwl_send_cmd_sync(priv, &cmd);
2115 if (rc)
2116 return rc;
2117
2118 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
2119 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
2120 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
2121 rc = -EIO;
2122 }
2123
2124 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
2125 switch (spectrum_resp_status) {
2126 case 0: /* Command will be handled */
2127 if (res->u.spectrum.id != 0xff) {
2128 IWL_DEBUG_INFO
2129 ("Replaced existing measurement: %d\n",
2130 res->u.spectrum.id);
2131 priv->measurement_status &= ~MEASUREMENT_READY;
2132 }
2133 priv->measurement_status |= MEASUREMENT_ACTIVE;
2134 rc = 0;
2135 break;
2136
2137 case 1: /* Command will not be handled */
2138 rc = -EAGAIN;
2139 break;
2140 }
2141
2142 dev_kfree_skb_any(cmd.meta.u.skb);
2143
2144 return rc;
2145 }
2146 #endif
2147
2148 static void iwl4965_txstatus_to_ieee(struct iwl_priv *priv,
2149 struct iwl_tx_info *tx_sta)
2150 {
2151
2152 tx_sta->status.ack_signal = 0;
2153 tx_sta->status.excessive_retries = 0;
2154
2155 if (in_interrupt())
2156 ieee80211_tx_status_irqsafe(priv->hw,
2157 tx_sta->skb[0], &(tx_sta->status));
2158 else
2159 ieee80211_tx_status(priv->hw,
2160 tx_sta->skb[0], &(tx_sta->status));
2161
2162 tx_sta->skb[0] = NULL;
2163 }
2164
2165 /**
2166 * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
2167 *
2168 * When FW advances 'R' index, all entries between old and new 'R' index
2169 * need to be reclaimed. As result, some free space forms. If there is
2170 * enough free space (> low mark), wake the stack that feeds us.
2171 */
2172 int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
2173 {
2174 struct iwl_tx_queue *txq = &priv->txq[txq_id];
2175 struct iwl_queue *q = &txq->q;
2176 int nfreed = 0;
2177
2178 if ((index >= q->n_bd) || (iwl_queue_used(q, index) == 0)) {
2179 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
2180 "is out of range [0-%d] %d %d.\n", txq_id,
2181 index, q->n_bd, q->write_ptr, q->read_ptr);
2182 return 0;
2183 }
2184
2185 for (index = iwl_queue_inc_wrap(index, q->n_bd);
2186 q->read_ptr != index;
2187 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
2188 if (txq_id != IWL_CMD_QUEUE_NUM) {
2189 iwl4965_txstatus_to_ieee(priv,
2190 &(txq->txb[txq->q.read_ptr]));
2191 iwl_hw_txq_free_tfd(priv, txq);
2192 } else if (nfreed > 1) {
2193 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
2194 q->write_ptr, q->read_ptr);
2195 queue_work(priv->workqueue, &priv->restart);
2196 }
2197 nfreed++;
2198 }
2199
2200 return nfreed;
2201 }
2202
2203 static int iwl4965_is_tx_success(u32 status)
2204 {
2205 status &= TX_STATUS_MSK;
2206 return (status == TX_STATUS_SUCCESS)
2207 || (status == TX_STATUS_DIRECT_DONE);
2208 }
2209
2210 /******************************************************************************
2211 *
2212 * Generic RX handler implementations
2213 *
2214 ******************************************************************************/
2215 #ifdef CONFIG_IWL4965_HT
2216
2217 static inline int iwl4965_get_ra_sta_id(struct iwl_priv *priv,
2218 struct ieee80211_hdr *hdr)
2219 {
2220 if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
2221 return IWL_AP_ID;
2222 else {
2223 u8 *da = ieee80211_get_DA(hdr);
2224 return iwl_find_station(priv, da);
2225 }
2226 }
2227
2228 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
2229 struct iwl_priv *priv, int txq_id, int idx)
2230 {
2231 if (priv->txq[txq_id].txb[idx].skb[0])
2232 return (struct ieee80211_hdr *)priv->txq[txq_id].
2233 txb[idx].skb[0]->data;
2234 return NULL;
2235 }
2236
2237 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
2238 {
2239 __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
2240 tx_resp->frame_count);
2241 return le32_to_cpu(*scd_ssn) & MAX_SN;
2242
2243 }
2244
2245 /**
2246 * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
2247 */
2248 static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
2249 struct iwl_ht_agg *agg,
2250 struct iwl4965_tx_resp_agg *tx_resp,
2251 u16 start_idx)
2252 {
2253 u16 status;
2254 struct agg_tx_status *frame_status = &tx_resp->status;
2255 struct ieee80211_tx_status *tx_status = NULL;
2256 struct ieee80211_hdr *hdr = NULL;
2257 int i, sh;
2258 int txq_id, idx;
2259 u16 seq;
2260
2261 if (agg->wait_for_ba)
2262 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
2263
2264 agg->frame_count = tx_resp->frame_count;
2265 agg->start_idx = start_idx;
2266 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
2267 agg->bitmap = 0;
2268
2269 /* # frames attempted by Tx command */
2270 if (agg->frame_count == 1) {
2271 /* Only one frame was attempted; no block-ack will arrive */
2272 status = le16_to_cpu(frame_status[0].status);
2273 seq = le16_to_cpu(frame_status[0].sequence);
2274 idx = SEQ_TO_INDEX(seq);
2275 txq_id = SEQ_TO_QUEUE(seq);
2276
2277 /* FIXME: code repetition */
2278 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
2279 agg->frame_count, agg->start_idx, idx);
2280
2281 tx_status = &(priv->txq[txq_id].txb[idx].status);
2282 tx_status->retry_count = tx_resp->failure_frame;
2283 tx_status->control.flags &= ~IEEE80211_TXCTL_AMPDU;
2284 tx_status->flags = iwl4965_is_tx_success(status)?
2285 IEEE80211_TX_STATUS_ACK : 0;
2286 iwl4965_hwrate_to_tx_control(priv,
2287 le32_to_cpu(tx_resp->rate_n_flags),
2288 &tx_status->control);
2289 /* FIXME: code repetition end */
2290
2291 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
2292 status & 0xff, tx_resp->failure_frame);
2293 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
2294 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
2295
2296 agg->wait_for_ba = 0;
2297 } else {
2298 /* Two or more frames were attempted; expect block-ack */
2299 u64 bitmap = 0;
2300 int start = agg->start_idx;
2301
2302 /* Construct bit-map of pending frames within Tx window */
2303 for (i = 0; i < agg->frame_count; i++) {
2304 u16 sc;
2305 status = le16_to_cpu(frame_status[i].status);
2306 seq = le16_to_cpu(frame_status[i].sequence);
2307 idx = SEQ_TO_INDEX(seq);
2308 txq_id = SEQ_TO_QUEUE(seq);
2309
2310 if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
2311 AGG_TX_STATE_ABORT_MSK))
2312 continue;
2313
2314 IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
2315 agg->frame_count, txq_id, idx);
2316
2317 hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
2318
2319 sc = le16_to_cpu(hdr->seq_ctrl);
2320 if (idx != (SEQ_TO_SN(sc) & 0xff)) {
2321 IWL_ERROR("BUG_ON idx doesn't match seq control"
2322 " idx=%d, seq_idx=%d, seq=%d\n",
2323 idx, SEQ_TO_SN(sc),
2324 hdr->seq_ctrl);
2325 return -1;
2326 }
2327
2328 IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
2329 i, idx, SEQ_TO_SN(sc));
2330
2331 sh = idx - start;
2332 if (sh > 64) {
2333 sh = (start - idx) + 0xff;
2334 bitmap = bitmap << sh;
2335 sh = 0;
2336 start = idx;
2337 } else if (sh < -64)
2338 sh = 0xff - (start - idx);
2339 else if (sh < 0) {
2340 sh = start - idx;
2341 start = idx;
2342 bitmap = bitmap << sh;
2343 sh = 0;
2344 }
2345 bitmap |= (1 << sh);
2346 IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
2347 start, (u32)(bitmap & 0xFFFFFFFF));
2348 }
2349
2350 agg->bitmap = bitmap;
2351 agg->start_idx = start;
2352 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
2353 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
2354 agg->frame_count, agg->start_idx,
2355 (unsigned long long)agg->bitmap);
2356
2357 if (bitmap)
2358 agg->wait_for_ba = 1;
2359 }
2360 return 0;
2361 }
2362 #endif
2363
2364 /**
2365 * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
2366 */
2367 static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
2368 struct iwl_rx_mem_buffer *rxb)
2369 {
2370 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2371 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
2372 int txq_id = SEQ_TO_QUEUE(sequence);
2373 int index = SEQ_TO_INDEX(sequence);
2374 struct iwl_tx_queue *txq = &priv->txq[txq_id];
2375 struct ieee80211_tx_status *tx_status;
2376 struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
2377 u32 status = le32_to_cpu(tx_resp->status);
2378 #ifdef CONFIG_IWL4965_HT
2379 int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
2380 struct ieee80211_hdr *hdr;
2381 __le16 *qc;
2382 #endif
2383
2384 if ((index >= txq->q.n_bd) || (iwl_queue_used(&txq->q, index) == 0)) {
2385 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
2386 "is out of range [0-%d] %d %d\n", txq_id,
2387 index, txq->q.n_bd, txq->q.write_ptr,
2388 txq->q.read_ptr);
2389 return;
2390 }
2391
2392 #ifdef CONFIG_IWL4965_HT
2393 hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
2394 qc = ieee80211_get_qos_ctrl(hdr);
2395
2396 if (qc)
2397 tid = le16_to_cpu(*qc) & 0xf;
2398
2399 sta_id = iwl4965_get_ra_sta_id(priv, hdr);
2400 if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
2401 IWL_ERROR("Station not known\n");
2402 return;
2403 }
2404
2405 if (txq->sched_retry) {
2406 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
2407 struct iwl_ht_agg *agg = NULL;
2408
2409 if (!qc)
2410 return;
2411
2412 agg = &priv->stations[sta_id].tid[tid].agg;
2413
2414 iwl4965_tx_status_reply_tx(priv, agg,
2415 (struct iwl4965_tx_resp_agg *)tx_resp, index);
2416
2417 if ((tx_resp->frame_count == 1) &&
2418 !iwl4965_is_tx_success(status)) {
2419 /* TODO: send BAR */
2420 }
2421
2422 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
2423 int freed, ampdu_q;
2424 index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
2425 IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
2426 "%d index %d\n", scd_ssn , index);
2427 freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
2428 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
2429
2430 if (iwl_queue_space(&txq->q) > txq->q.low_mark &&
2431 txq_id >= 0 && priv->mac80211_registered &&
2432 agg->state != IWL_EMPTYING_HW_QUEUE_DELBA) {
2433 /* calculate mac80211 ampdu sw queue to wake */
2434 ampdu_q = txq_id - IWL_BACK_QUEUE_FIRST_ID +
2435 priv->hw->queues;
2436 if (agg->state == IWL_AGG_OFF)
2437 ieee80211_wake_queue(priv->hw, txq_id);
2438 else
2439 ieee80211_wake_queue(priv->hw, ampdu_q);
2440 }
2441 iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
2442 }
2443 } else {
2444 #endif /* CONFIG_IWL4965_HT */
2445 tx_status = &(txq->txb[txq->q.read_ptr].status);
2446
2447 tx_status->retry_count = tx_resp->failure_frame;
2448 tx_status->flags =
2449 iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
2450 iwl4965_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags),
2451 &tx_status->control);
2452
2453 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
2454 "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
2455 status, le32_to_cpu(tx_resp->rate_n_flags),
2456 tx_resp->failure_frame);
2457
2458 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
2459 #ifdef CONFIG_IWL4965_HT
2460 if (index != -1) {
2461 int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
2462 if (tid != MAX_TID_COUNT)
2463 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
2464 if (iwl_queue_space(&txq->q) > txq->q.low_mark &&
2465 (txq_id >= 0) && priv->mac80211_registered)
2466 ieee80211_wake_queue(priv->hw, txq_id);
2467 if (tid != MAX_TID_COUNT)
2468 iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
2469 }
2470 }
2471 #endif /* CONFIG_IWL4965_HT */
2472
2473 if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
2474 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
2475 }
2476
2477
2478 static void iwl4965_rx_reply_alive(struct iwl_priv *priv,
2479 struct iwl_rx_mem_buffer *rxb)
2480 {
2481 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2482 struct iwl4965_alive_resp *palive;
2483 struct delayed_work *pwork;
2484
2485 palive = &pkt->u.alive_frame;
2486
2487 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
2488 "0x%01X 0x%01X\n",
2489 palive->is_valid, palive->ver_type,
2490 palive->ver_subtype);
2491
2492 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
2493 IWL_DEBUG_INFO("Initialization Alive received.\n");
2494 memcpy(&priv->card_alive_init,
2495 &pkt->u.alive_frame,
2496 sizeof(struct iwl4965_init_alive_resp));
2497 pwork = &priv->init_alive_start;
2498 } else {
2499 IWL_DEBUG_INFO("Runtime Alive received.\n");
2500 memcpy(&priv->card_alive, &pkt->u.alive_frame,
2501 sizeof(struct iwl4965_alive_resp));
2502 pwork = &priv->alive_start;
2503 }
2504
2505 /* We delay the ALIVE response by 5ms to
2506 * give the HW RF Kill time to activate... */
2507 if (palive->is_valid == UCODE_VALID_OK)
2508 queue_delayed_work(priv->workqueue, pwork,
2509 msecs_to_jiffies(5));
2510 else
2511 IWL_WARNING("uCode did not respond OK.\n");
2512 }
2513
2514 static void iwl4965_rx_reply_add_sta(struct iwl_priv *priv,
2515 struct iwl_rx_mem_buffer *rxb)
2516 {
2517 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2518
2519 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
2520 return;
2521 }
2522
2523 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
2524 struct iwl_rx_mem_buffer *rxb)
2525 {
2526 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2527
2528 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
2529 "seq 0x%04X ser 0x%08X\n",
2530 le32_to_cpu(pkt->u.err_resp.error_type),
2531 get_cmd_string(pkt->u.err_resp.cmd_id),
2532 pkt->u.err_resp.cmd_id,
2533 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2534 le32_to_cpu(pkt->u.err_resp.error_info));
2535 }
2536
2537 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2538
2539 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
2540 {
2541 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2542 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
2543 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
2544 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
2545 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
2546 rxon->channel = csa->channel;
2547 priv->staging_rxon.channel = csa->channel;
2548 }
2549
2550 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
2551 struct iwl_rx_mem_buffer *rxb)
2552 {
2553 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
2554 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2555 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
2556
2557 if (!report->state) {
2558 IWL_DEBUG(IWL_DL_11H,
2559 "Spectrum Measure Notification: Start\n");
2560 return;
2561 }
2562
2563 memcpy(&priv->measure_report, report, sizeof(*report));
2564 priv->measurement_status |= MEASUREMENT_READY;
2565 #endif
2566 }
2567
2568 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
2569 struct iwl_rx_mem_buffer *rxb)
2570 {
2571 #ifdef CONFIG_IWLWIFI_DEBUG
2572 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2573 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
2574 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
2575 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2576 #endif
2577 }
2578
2579 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2580 struct iwl_rx_mem_buffer *rxb)
2581 {
2582 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2583 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
2584 "notification for %s:\n",
2585 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
2586 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
2587 }
2588
2589 static void iwl4965_bg_beacon_update(struct work_struct *work)
2590 {
2591 struct iwl_priv *priv =
2592 container_of(work, struct iwl_priv, beacon_update);
2593 struct sk_buff *beacon;
2594
2595 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
2596 beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL);
2597
2598 if (!beacon) {
2599 IWL_ERROR("update beacon failed\n");
2600 return;
2601 }
2602
2603 mutex_lock(&priv->mutex);
2604 /* new beacon skb is allocated every time; dispose previous.*/
2605 if (priv->ibss_beacon)
2606 dev_kfree_skb(priv->ibss_beacon);
2607
2608 priv->ibss_beacon = beacon;
2609 mutex_unlock(&priv->mutex);
2610
2611 iwl4965_send_beacon_cmd(priv);
2612 }
2613
2614 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
2615 struct iwl_rx_mem_buffer *rxb)
2616 {
2617 #ifdef CONFIG_IWLWIFI_DEBUG
2618 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2619 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
2620 u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
2621
2622 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
2623 "tsf %d %d rate %d\n",
2624 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
2625 beacon->beacon_notify_hdr.failure_frame,
2626 le32_to_cpu(beacon->ibss_mgr_status),
2627 le32_to_cpu(beacon->high_tsf),
2628 le32_to_cpu(beacon->low_tsf), rate);
2629 #endif
2630
2631 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2632 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
2633 queue_work(priv->workqueue, &priv->beacon_update);
2634 }
2635
2636 /* Service response to REPLY_SCAN_CMD (0x80) */
2637 static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
2638 struct iwl_rx_mem_buffer *rxb)
2639 {
2640 #ifdef CONFIG_IWLWIFI_DEBUG
2641 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2642 struct iwl4965_scanreq_notification *notif =
2643 (struct iwl4965_scanreq_notification *)pkt->u.raw;
2644
2645 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
2646 #endif
2647 }
2648
2649 /* Service SCAN_START_NOTIFICATION (0x82) */
2650 static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
2651 struct iwl_rx_mem_buffer *rxb)
2652 {
2653 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2654 struct iwl4965_scanstart_notification *notif =
2655 (struct iwl4965_scanstart_notification *)pkt->u.raw;
2656 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
2657 IWL_DEBUG_SCAN("Scan start: "
2658 "%d [802.11%s] "
2659 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
2660 notif->channel,
2661 notif->band ? "bg" : "a",
2662 notif->tsf_high,
2663 notif->tsf_low, notif->status, notif->beacon_timer);
2664 }
2665
2666 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
2667 static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
2668 struct iwl_rx_mem_buffer *rxb)
2669 {
2670 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2671 struct iwl4965_scanresults_notification *notif =
2672 (struct iwl4965_scanresults_notification *)pkt->u.raw;
2673
2674 IWL_DEBUG_SCAN("Scan ch.res: "
2675 "%d [802.11%s] "
2676 "(TSF: 0x%08X:%08X) - %d "
2677 "elapsed=%lu usec (%dms since last)\n",
2678 notif->channel,
2679 notif->band ? "bg" : "a",
2680 le32_to_cpu(notif->tsf_high),
2681 le32_to_cpu(notif->tsf_low),
2682 le32_to_cpu(notif->statistics[0]),
2683 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
2684 jiffies_to_msecs(elapsed_jiffies
2685 (priv->last_scan_jiffies, jiffies)));
2686
2687 priv->last_scan_jiffies = jiffies;
2688 priv->next_scan_jiffies = 0;
2689 }
2690
2691 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
2692 static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
2693 struct iwl_rx_mem_buffer *rxb)
2694 {
2695 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2696 struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
2697
2698 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
2699 scan_notif->scanned_channels,
2700 scan_notif->tsf_low,
2701 scan_notif->tsf_high, scan_notif->status);
2702
2703 /* The HW is no longer scanning */
2704 clear_bit(STATUS_SCAN_HW, &priv->status);
2705
2706 /* The scan completion notification came in, so kill that timer... */
2707 cancel_delayed_work(&priv->scan_check);
2708
2709 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
2710 (priv->scan_bands == 2) ? "2.4" : "5.2",
2711 jiffies_to_msecs(elapsed_jiffies
2712 (priv->scan_pass_start, jiffies)));
2713
2714 /* Remove this scanned band from the list
2715 * of pending bands to scan */
2716 priv->scan_bands--;
2717
2718 /* If a request to abort was given, or the scan did not succeed
2719 * then we reset the scan state machine and terminate,
2720 * re-queuing another scan if one has been requested */
2721 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2722 IWL_DEBUG_INFO("Aborted scan completed.\n");
2723 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
2724 } else {
2725 /* If there are more bands on this scan pass reschedule */
2726 if (priv->scan_bands > 0)
2727 goto reschedule;
2728 }
2729
2730 priv->last_scan_jiffies = jiffies;
2731 priv->next_scan_jiffies = 0;
2732 IWL_DEBUG_INFO("Setting scan to off\n");
2733
2734 clear_bit(STATUS_SCANNING, &priv->status);
2735
2736 IWL_DEBUG_INFO("Scan took %dms\n",
2737 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
2738
2739 queue_work(priv->workqueue, &priv->scan_completed);
2740
2741 return;
2742
2743 reschedule:
2744 priv->scan_pass_start = jiffies;
2745 queue_work(priv->workqueue, &priv->request_scan);
2746 }
2747
2748 /* Handle notification from uCode that card's power state is changing
2749 * due to software, hardware, or critical temperature RFKILL */
2750 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
2751 struct iwl_rx_mem_buffer *rxb)
2752 {
2753 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2754 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
2755 unsigned long status = priv->status;
2756
2757 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
2758 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
2759 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
2760
2761 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
2762 RF_CARD_DISABLED)) {
2763
2764 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2765 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2766
2767 if (!iwl_grab_nic_access(priv)) {
2768 iwl_write_direct32(
2769 priv, HBUS_TARG_MBX_C,
2770 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
2771
2772 iwl_release_nic_access(priv);
2773 }
2774
2775 if (!(flags & RXON_CARD_DISABLED)) {
2776 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2777 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2778 if (!iwl_grab_nic_access(priv)) {
2779 iwl_write_direct32(
2780 priv, HBUS_TARG_MBX_C,
2781 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
2782
2783 iwl_release_nic_access(priv);
2784 }
2785 }
2786
2787 if (flags & RF_CARD_DISABLED) {
2788 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2789 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
2790 iwl_read32(priv, CSR_UCODE_DRV_GP1);
2791 if (!iwl_grab_nic_access(priv))
2792 iwl_release_nic_access(priv);
2793 }
2794 }
2795
2796 if (flags & HW_CARD_DISABLED)
2797 set_bit(STATUS_RF_KILL_HW, &priv->status);
2798 else
2799 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2800
2801
2802 if (flags & SW_CARD_DISABLED)
2803 set_bit(STATUS_RF_KILL_SW, &priv->status);
2804 else
2805 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2806
2807 if (!(flags & RXON_CARD_DISABLED))
2808 iwl4965_scan_cancel(priv);
2809
2810 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
2811 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
2812 (test_bit(STATUS_RF_KILL_SW, &status) !=
2813 test_bit(STATUS_RF_KILL_SW, &priv->status)))
2814 queue_work(priv->workqueue, &priv->rf_kill);
2815 else
2816 wake_up_interruptible(&priv->wait_command_queue);
2817 }
2818
2819 /**
2820 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
2821 *
2822 * Setup the RX handlers for each of the reply types sent from the uCode
2823 * to the host.
2824 *
2825 * This function chains into the hardware specific files for them to setup
2826 * any hardware specific handlers as well.
2827 */
2828 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
2829 {
2830 priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
2831 priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
2832 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
2833 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
2834 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
2835 iwl4965_rx_spectrum_measure_notif;
2836 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
2837 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
2838 iwl4965_rx_pm_debug_statistics_notif;
2839 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
2840
2841 /*
2842 * The same handler is used for both the REPLY to a discrete
2843 * statistics request from the host as well as for the periodic
2844 * statistics notifications (after received beacons) from the uCode.
2845 */
2846 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
2847 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
2848
2849 priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
2850 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
2851 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
2852 iwl4965_rx_scan_results_notif;
2853 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
2854 iwl4965_rx_scan_complete_notif;
2855 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
2856 priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
2857
2858 /* Set up hardware specific Rx handlers */
2859 priv->cfg->ops->lib->rx_handler_setup(priv);
2860 }
2861
2862 /**
2863 * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
2864 * @rxb: Rx buffer to reclaim
2865 *
2866 * If an Rx buffer has an async callback associated with it the callback
2867 * will be executed. The attached skb (if present) will only be freed
2868 * if the callback returns 1
2869 */
2870 static void iwl4965_tx_cmd_complete(struct iwl_priv *priv,
2871 struct iwl_rx_mem_buffer *rxb)
2872 {
2873 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2874 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
2875 int txq_id = SEQ_TO_QUEUE(sequence);
2876 int index = SEQ_TO_INDEX(sequence);
2877 int huge = sequence & SEQ_HUGE_FRAME;
2878 int cmd_index;
2879 struct iwl_cmd *cmd;
2880
2881 /* If a Tx command is being handled and it isn't in the actual
2882 * command queue then there a command routing bug has been introduced
2883 * in the queue management code. */
2884 if (txq_id != IWL_CMD_QUEUE_NUM)
2885 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
2886 txq_id, pkt->hdr.cmd);
2887 BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
2888
2889 cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
2890 cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
2891
2892 /* Input error checking is done when commands are added to queue. */
2893 if (cmd->meta.flags & CMD_WANT_SKB) {
2894 cmd->meta.source->u.skb = rxb->skb;
2895 rxb->skb = NULL;
2896 } else if (cmd->meta.u.callback &&
2897 !cmd->meta.u.callback(priv, cmd, rxb->skb))
2898 rxb->skb = NULL;
2899
2900 iwl4965_tx_queue_reclaim(priv, txq_id, index);
2901
2902 if (!(cmd->meta.flags & CMD_ASYNC)) {
2903 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
2904 wake_up_interruptible(&priv->wait_command_queue);
2905 }
2906 }
2907
2908 /*
2909 * this should be called while priv->lock is locked
2910 */
2911 static void __iwl_rx_replenish(struct iwl_priv *priv)
2912 {
2913 iwl_rx_allocate(priv);
2914 iwl_rx_queue_restock(priv);
2915 }
2916
2917
2918 /**
2919 * iwl_rx_handle - Main entry function for receiving responses from uCode
2920 *
2921 * Uses the priv->rx_handlers callback function array to invoke
2922 * the appropriate handlers, including command responses,
2923 * frame-received notifications, and other notifications.
2924 */
2925 void iwl_rx_handle(struct iwl_priv *priv)
2926 {
2927 struct iwl_rx_mem_buffer *rxb;
2928 struct iwl_rx_packet *pkt;
2929 struct iwl_rx_queue *rxq = &priv->rxq;
2930 u32 r, i;
2931 int reclaim;
2932 unsigned long flags;
2933 u8 fill_rx = 0;
2934 u32 count = 8;
2935
2936 /* uCode's read index (stored in shared DRAM) indicates the last Rx
2937 * buffer that the driver may process (last buffer filled by ucode). */
2938 r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
2939 i = rxq->read;
2940
2941 /* Rx interrupt, but nothing sent from uCode */
2942 if (i == r)
2943 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
2944
2945 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
2946 fill_rx = 1;
2947
2948 while (i != r) {
2949 rxb = rxq->queue[i];
2950
2951 /* If an RXB doesn't have a Rx queue slot associated with it,
2952 * then a bug has been introduced in the queue refilling
2953 * routines -- catch it here */
2954 BUG_ON(rxb == NULL);
2955
2956 rxq->queue[i] = NULL;
2957
2958 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
2959 priv->hw_params.rx_buf_size,
2960 PCI_DMA_FROMDEVICE);
2961 pkt = (struct iwl_rx_packet *)rxb->skb->data;
2962
2963 /* Reclaim a command buffer only if this packet is a response
2964 * to a (driver-originated) command.
2965 * If the packet (e.g. Rx frame) originated from uCode,
2966 * there is no command buffer to reclaim.
2967 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
2968 * but apparently a few don't get set; catch them here. */
2969 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
2970 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
2971 (pkt->hdr.cmd != REPLY_RX) &&
2972 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
2973 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
2974 (pkt->hdr.cmd != REPLY_TX);
2975
2976 /* Based on type of command response or notification,
2977 * handle those that need handling via function in
2978 * rx_handlers table. See iwl4965_setup_rx_handlers() */
2979 if (priv->rx_handlers[pkt->hdr.cmd]) {
2980 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
2981 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
2982 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
2983 } else {
2984 /* No handling needed */
2985 IWL_DEBUG(IWL_DL_RX,
2986 "r %d i %d No handler needed for %s, 0x%02x\n",
2987 r, i, get_cmd_string(pkt->hdr.cmd),
2988 pkt->hdr.cmd);
2989 }
2990
2991 if (reclaim) {
2992 /* Invoke any callbacks, transfer the skb to caller, and
2993 * fire off the (possibly) blocking iwl_send_cmd()
2994 * as we reclaim the driver command queue */
2995 if (rxb && rxb->skb)
2996 iwl4965_tx_cmd_complete(priv, rxb);
2997 else
2998 IWL_WARNING("Claim null rxb?\n");
2999 }
3000
3001 /* For now we just don't re-use anything. We can tweak this
3002 * later to try and re-use notification packets and SKBs that
3003 * fail to Rx correctly */
3004 if (rxb->skb != NULL) {
3005 priv->alloc_rxb_skb--;
3006 dev_kfree_skb_any(rxb->skb);
3007 rxb->skb = NULL;
3008 }
3009
3010 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
3011 priv->hw_params.rx_buf_size,
3012 PCI_DMA_FROMDEVICE);
3013 spin_lock_irqsave(&rxq->lock, flags);
3014 list_add_tail(&rxb->list, &priv->rxq.rx_used);
3015 spin_unlock_irqrestore(&rxq->lock, flags);
3016 i = (i + 1) & RX_QUEUE_MASK;
3017 /* If there are a lot of unused frames,
3018 * restock the Rx queue so ucode wont assert. */
3019 if (fill_rx) {
3020 count++;
3021 if (count >= 8) {
3022 priv->rxq.read = i;
3023 __iwl_rx_replenish(priv);
3024 count = 0;
3025 }
3026 }
3027 }
3028
3029 /* Backtrack one entry */
3030 priv->rxq.read = i;
3031 iwl_rx_queue_restock(priv);
3032 }
3033 /* Convert linear signal-to-noise ratio into dB */
3034 static u8 ratio2dB[100] = {
3035 /* 0 1 2 3 4 5 6 7 8 9 */
3036 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
3037 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
3038 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
3039 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
3040 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
3041 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
3042 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
3043 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
3044 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
3045 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
3046 };
3047
3048 /* Calculates a relative dB value from a ratio of linear
3049 * (i.e. not dB) signal levels.
3050 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
3051 int iwl4965_calc_db_from_ratio(int sig_ratio)
3052 {
3053 /* 1000:1 or higher just report as 60 dB */
3054 if (sig_ratio >= 1000)
3055 return 60;
3056
3057 /* 100:1 or higher, divide by 10 and use table,
3058 * add 20 dB to make up for divide by 10 */
3059 if (sig_ratio >= 100)
3060 return (20 + (int)ratio2dB[sig_ratio/10]);
3061
3062 /* We shouldn't see this */
3063 if (sig_ratio < 1)
3064 return 0;
3065
3066 /* Use table for ratios 1:1 - 99:1 */
3067 return (int)ratio2dB[sig_ratio];
3068 }
3069
3070 #define PERFECT_RSSI (-20) /* dBm */
3071 #define WORST_RSSI (-95) /* dBm */
3072 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
3073
3074 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
3075 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
3076 * about formulas used below. */
3077 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
3078 {
3079 int sig_qual;
3080 int degradation = PERFECT_RSSI - rssi_dbm;
3081
3082 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
3083 * as indicator; formula is (signal dbm - noise dbm).
3084 * SNR at or above 40 is a great signal (100%).
3085 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
3086 * Weakest usable signal is usually 10 - 15 dB SNR. */
3087 if (noise_dbm) {
3088 if (rssi_dbm - noise_dbm >= 40)
3089 return 100;
3090 else if (rssi_dbm < noise_dbm)
3091 return 0;
3092 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
3093
3094 /* Else use just the signal level.
3095 * This formula is a least squares fit of data points collected and
3096 * compared with a reference system that had a percentage (%) display
3097 * for signal quality. */
3098 } else
3099 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
3100 (15 * RSSI_RANGE + 62 * degradation)) /
3101 (RSSI_RANGE * RSSI_RANGE);
3102
3103 if (sig_qual > 100)
3104 sig_qual = 100;
3105 else if (sig_qual < 1)
3106 sig_qual = 0;
3107
3108 return sig_qual;
3109 }
3110
3111 /**
3112 * iwl_txq_update_write_ptr - Send new write index to hardware
3113 */
3114 static int iwl_txq_update_write_ptr(struct iwl_priv *priv,
3115 struct iwl_tx_queue *txq)
3116 {
3117 u32 reg = 0;
3118 int ret = 0;
3119 int txq_id = txq->q.id;
3120
3121 if (txq->need_update == 0)
3122 return ret;
3123
3124 /* if we're trying to save power */
3125 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3126 /* wake up nic if it's powered down ...
3127 * uCode will wake up, and interrupt us again, so next
3128 * time we'll skip this part. */
3129 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
3130
3131 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3132 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
3133 iwl_set_bit(priv, CSR_GP_CNTRL,
3134 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3135 return ret;
3136 }
3137
3138 /* restore this queue's parameters in nic hardware. */
3139 ret = iwl_grab_nic_access(priv);
3140 if (ret)
3141 return ret;
3142 iwl_write_direct32(priv, HBUS_TARG_WRPTR,
3143 txq->q.write_ptr | (txq_id << 8));
3144 iwl_release_nic_access(priv);
3145
3146 /* else not in power-save mode, uCode will never sleep when we're
3147 * trying to tx (during RFKILL, we're not trying to tx). */
3148 } else
3149 iwl_write32(priv, HBUS_TARG_WRPTR,
3150 txq->q.write_ptr | (txq_id << 8));
3151
3152 txq->need_update = 0;
3153
3154 return ret;
3155 }
3156
3157 #ifdef CONFIG_IWLWIFI_DEBUG
3158 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
3159 {
3160 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
3161 DECLARE_MAC_BUF(mac);
3162
3163 IWL_DEBUG_RADIO("RX CONFIG:\n");
3164 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
3165 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
3166 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
3167 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
3168 le32_to_cpu(rxon->filter_flags));
3169 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
3170 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
3171 rxon->ofdm_basic_rates);
3172 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
3173 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
3174 print_mac(mac, rxon->node_addr));
3175 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
3176 print_mac(mac, rxon->bssid_addr));
3177 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
3178 }
3179 #endif
3180
3181 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
3182 {
3183 IWL_DEBUG_ISR("Enabling interrupts\n");
3184 set_bit(STATUS_INT_ENABLED, &priv->status);
3185 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
3186 }
3187
3188 /* call this function to flush any scheduled tasklet */
3189 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
3190 {
3191 /* wait to make sure we flush pedding tasklet*/
3192 synchronize_irq(priv->pci_dev->irq);
3193 tasklet_kill(&priv->irq_tasklet);
3194 }
3195
3196 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
3197 {
3198 clear_bit(STATUS_INT_ENABLED, &priv->status);
3199
3200 /* disable interrupts from uCode/NIC to host */
3201 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
3202
3203 /* acknowledge/clear/reset any interrupts still pending
3204 * from uCode or flow handler (Rx/Tx DMA) */
3205 iwl_write32(priv, CSR_INT, 0xffffffff);
3206 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
3207 IWL_DEBUG_ISR("Disabled interrupts\n");
3208 }
3209
3210 static const char *desc_lookup(int i)
3211 {
3212 switch (i) {
3213 case 1:
3214 return "FAIL";
3215 case 2:
3216 return "BAD_PARAM";
3217 case 3:
3218 return "BAD_CHECKSUM";
3219 case 4:
3220 return "NMI_INTERRUPT";
3221 case 5:
3222 return "SYSASSERT";
3223 case 6:
3224 return "FATAL_ERROR";
3225 }
3226
3227 return "UNKNOWN";
3228 }
3229
3230 #define ERROR_START_OFFSET (1 * sizeof(u32))
3231 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
3232
3233 static void iwl4965_dump_nic_error_log(struct iwl_priv *priv)
3234 {
3235 u32 data2, line;
3236 u32 desc, time, count, base, data1;
3237 u32 blink1, blink2, ilink1, ilink2;
3238 int rc;
3239
3240 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
3241
3242 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
3243 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
3244 return;
3245 }
3246
3247 rc = iwl_grab_nic_access(priv);
3248 if (rc) {
3249 IWL_WARNING("Can not read from adapter at this time.\n");
3250 return;
3251 }
3252
3253 count = iwl_read_targ_mem(priv, base);
3254
3255 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
3256 IWL_ERROR("Start IWL Error Log Dump:\n");
3257 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
3258 }
3259
3260 desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
3261 blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
3262 blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
3263 ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
3264 ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
3265 data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
3266 data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
3267 line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
3268 time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
3269
3270 IWL_ERROR("Desc Time "
3271 "data1 data2 line\n");
3272 IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
3273 desc_lookup(desc), desc, time, data1, data2, line);
3274 IWL_ERROR("blink1 blink2 ilink1 ilink2\n");
3275 IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
3276 ilink1, ilink2);
3277
3278 iwl_release_nic_access(priv);
3279 }
3280
3281 #define EVENT_START_OFFSET (4 * sizeof(u32))
3282
3283 /**
3284 * iwl4965_print_event_log - Dump error event log to syslog
3285 *
3286 * NOTE: Must be called with iwl_grab_nic_access() already obtained!
3287 */
3288 static void iwl4965_print_event_log(struct iwl_priv *priv, u32 start_idx,
3289 u32 num_events, u32 mode)
3290 {
3291 u32 i;
3292 u32 base; /* SRAM byte address of event log header */
3293 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
3294 u32 ptr; /* SRAM byte address of log data */
3295 u32 ev, time, data; /* event log data */
3296
3297 if (num_events == 0)
3298 return;
3299
3300 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
3301
3302 if (mode == 0)
3303 event_size = 2 * sizeof(u32);
3304 else
3305 event_size = 3 * sizeof(u32);
3306
3307 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
3308
3309 /* "time" is actually "data" for mode 0 (no timestamp).
3310 * place event id # at far right for easier visual parsing. */
3311 for (i = 0; i < num_events; i++) {
3312 ev = iwl_read_targ_mem(priv, ptr);
3313 ptr += sizeof(u32);
3314 time = iwl_read_targ_mem(priv, ptr);
3315 ptr += sizeof(u32);
3316 if (mode == 0)
3317 IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
3318 else {
3319 data = iwl_read_targ_mem(priv, ptr);
3320 ptr += sizeof(u32);
3321 IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
3322 }
3323 }
3324 }
3325
3326 static void iwl4965_dump_nic_event_log(struct iwl_priv *priv)
3327 {
3328 int rc;
3329 u32 base; /* SRAM byte address of event log header */
3330 u32 capacity; /* event log capacity in # entries */
3331 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
3332 u32 num_wraps; /* # times uCode wrapped to top of log */
3333 u32 next_entry; /* index of next entry to be written by uCode */
3334 u32 size; /* # entries that we'll print */
3335
3336 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
3337 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
3338 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
3339 return;
3340 }
3341
3342 rc = iwl_grab_nic_access(priv);
3343 if (rc) {
3344 IWL_WARNING("Can not read from adapter at this time.\n");
3345 return;
3346 }
3347
3348 /* event log header */
3349 capacity = iwl_read_targ_mem(priv, base);
3350 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
3351 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
3352 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
3353
3354 size = num_wraps ? capacity : next_entry;
3355
3356 /* bail out if nothing in log */
3357 if (size == 0) {
3358 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
3359 iwl_release_nic_access(priv);
3360 return;
3361 }
3362
3363 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
3364 size, num_wraps);
3365
3366 /* if uCode has wrapped back to top of log, start at the oldest entry,
3367 * i.e the next one that uCode would fill. */
3368 if (num_wraps)
3369 iwl4965_print_event_log(priv, next_entry,
3370 capacity - next_entry, mode);
3371
3372 /* (then/else) start at top of log */
3373 iwl4965_print_event_log(priv, 0, next_entry, mode);
3374
3375 iwl_release_nic_access(priv);
3376 }
3377
3378 /**
3379 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
3380 */
3381 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
3382 {
3383 /* Set the FW error flag -- cleared on iwl4965_down */
3384 set_bit(STATUS_FW_ERROR, &priv->status);
3385
3386 /* Cancel currently queued command. */
3387 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3388
3389 #ifdef CONFIG_IWLWIFI_DEBUG
3390 if (priv->debug_level & IWL_DL_FW_ERRORS) {
3391 iwl4965_dump_nic_error_log(priv);
3392 iwl4965_dump_nic_event_log(priv);
3393 iwl4965_print_rx_config_cmd(priv);
3394 }
3395 #endif
3396
3397 wake_up_interruptible(&priv->wait_command_queue);
3398
3399 /* Keep the restart process from trying to send host
3400 * commands by clearing the INIT status bit */
3401 clear_bit(STATUS_READY, &priv->status);
3402
3403 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3404 IWL_DEBUG(IWL_DL_FW_ERRORS,
3405 "Restarting adapter due to uCode error.\n");
3406
3407 if (iwl_is_associated(priv)) {
3408 memcpy(&priv->recovery_rxon, &priv->active_rxon,
3409 sizeof(priv->recovery_rxon));
3410 priv->error_recovering = 1;
3411 }
3412 if (priv->cfg->mod_params->restart_fw)
3413 queue_work(priv->workqueue, &priv->restart);
3414 }
3415 }
3416
3417 static void iwl4965_error_recovery(struct iwl_priv *priv)
3418 {
3419 unsigned long flags;
3420
3421 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
3422 sizeof(priv->staging_rxon));
3423 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3424 iwl4965_commit_rxon(priv);
3425
3426 iwl_rxon_add_station(priv, priv->bssid, 1);
3427
3428 spin_lock_irqsave(&priv->lock, flags);
3429 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
3430 priv->error_recovering = 0;
3431 spin_unlock_irqrestore(&priv->lock, flags);
3432 }
3433
3434 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
3435 {
3436 u32 inta, handled = 0;
3437 u32 inta_fh;
3438 unsigned long flags;
3439 #ifdef CONFIG_IWLWIFI_DEBUG
3440 u32 inta_mask;
3441 #endif
3442
3443 spin_lock_irqsave(&priv->lock, flags);
3444
3445 /* Ack/clear/reset pending uCode interrupts.
3446 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
3447 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
3448 inta = iwl_read32(priv, CSR_INT);
3449 iwl_write32(priv, CSR_INT, inta);
3450
3451 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
3452 * Any new interrupts that happen after this, either while we're
3453 * in this tasklet, or later, will show up in next ISR/tasklet. */
3454 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
3455 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
3456
3457 #ifdef CONFIG_IWLWIFI_DEBUG
3458 if (priv->debug_level & IWL_DL_ISR) {
3459 /* just for debug */
3460 inta_mask = iwl_read32(priv, CSR_INT_MASK);
3461 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
3462 inta, inta_mask, inta_fh);
3463 }
3464 #endif
3465
3466 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
3467 * atomic, make sure that inta covers all the interrupts that
3468 * we've discovered, even if FH interrupt came in just after
3469 * reading CSR_INT. */
3470 if (inta_fh & CSR49_FH_INT_RX_MASK)
3471 inta |= CSR_INT_BIT_FH_RX;
3472 if (inta_fh & CSR49_FH_INT_TX_MASK)
3473 inta |= CSR_INT_BIT_FH_TX;
3474
3475 /* Now service all interrupt bits discovered above. */
3476 if (inta & CSR_INT_BIT_HW_ERR) {
3477 IWL_ERROR("Microcode HW error detected. Restarting.\n");
3478
3479 /* Tell the device to stop sending interrupts */
3480 iwl4965_disable_interrupts(priv);
3481
3482 iwl4965_irq_handle_error(priv);
3483
3484 handled |= CSR_INT_BIT_HW_ERR;
3485
3486 spin_unlock_irqrestore(&priv->lock, flags);
3487
3488 return;
3489 }
3490
3491 #ifdef CONFIG_IWLWIFI_DEBUG
3492 if (priv->debug_level & (IWL_DL_ISR)) {
3493 /* NIC fires this, but we don't use it, redundant with WAKEUP */
3494 if (inta & CSR_INT_BIT_SCD)
3495 IWL_DEBUG_ISR("Scheduler finished to transmit "
3496 "the frame/frames.\n");
3497
3498 /* Alive notification via Rx interrupt will do the real work */
3499 if (inta & CSR_INT_BIT_ALIVE)
3500 IWL_DEBUG_ISR("Alive interrupt\n");
3501 }
3502 #endif
3503 /* Safely ignore these bits for debug checks below */
3504 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
3505
3506 /* HW RF KILL switch toggled */
3507 if (inta & CSR_INT_BIT_RF_KILL) {
3508 int hw_rf_kill = 0;
3509 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
3510 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
3511 hw_rf_kill = 1;
3512
3513 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
3514 hw_rf_kill ? "disable radio":"enable radio");
3515
3516 /* Queue restart only if RF_KILL switch was set to "kill"
3517 * when we loaded driver, and is now set to "enable".
3518 * After we're Alive, RF_KILL gets handled by
3519 * iwl4965_rx_card_state_notif() */
3520 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
3521 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3522 queue_work(priv->workqueue, &priv->restart);
3523 }
3524
3525 handled |= CSR_INT_BIT_RF_KILL;
3526 }
3527
3528 /* Chip got too hot and stopped itself */
3529 if (inta & CSR_INT_BIT_CT_KILL) {
3530 IWL_ERROR("Microcode CT kill error detected.\n");
3531 handled |= CSR_INT_BIT_CT_KILL;
3532 }
3533
3534 /* Error detected by uCode */
3535 if (inta & CSR_INT_BIT_SW_ERR) {
3536 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
3537 inta);
3538 iwl4965_irq_handle_error(priv);
3539 handled |= CSR_INT_BIT_SW_ERR;
3540 }
3541
3542 /* uCode wakes up after power-down sleep */
3543 if (inta & CSR_INT_BIT_WAKEUP) {
3544 IWL_DEBUG_ISR("Wakeup interrupt\n");
3545 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
3546 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
3547 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
3548 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
3549 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
3550 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
3551 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
3552
3553 handled |= CSR_INT_BIT_WAKEUP;
3554 }
3555
3556 /* All uCode command responses, including Tx command responses,
3557 * Rx "responses" (frame-received notification), and other
3558 * notifications from uCode come through here*/
3559 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
3560 iwl_rx_handle(priv);
3561 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
3562 }
3563
3564 if (inta & CSR_INT_BIT_FH_TX) {
3565 IWL_DEBUG_ISR("Tx interrupt\n");
3566 handled |= CSR_INT_BIT_FH_TX;
3567 }
3568
3569 if (inta & ~handled)
3570 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
3571
3572 if (inta & ~CSR_INI_SET_MASK) {
3573 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
3574 inta & ~CSR_INI_SET_MASK);
3575 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
3576 }
3577
3578 /* Re-enable all interrupts */
3579 /* only Re-enable if diabled by irq */
3580 if (test_bit(STATUS_INT_ENABLED, &priv->status))
3581 iwl4965_enable_interrupts(priv);
3582
3583 #ifdef CONFIG_IWLWIFI_DEBUG
3584 if (priv->debug_level & (IWL_DL_ISR)) {
3585 inta = iwl_read32(priv, CSR_INT);
3586 inta_mask = iwl_read32(priv, CSR_INT_MASK);
3587 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
3588 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
3589 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
3590 }
3591 #endif
3592 spin_unlock_irqrestore(&priv->lock, flags);
3593 }
3594
3595 static irqreturn_t iwl4965_isr(int irq, void *data)
3596 {
3597 struct iwl_priv *priv = data;
3598 u32 inta, inta_mask;
3599 u32 inta_fh;
3600 if (!priv)
3601 return IRQ_NONE;
3602
3603 spin_lock(&priv->lock);
3604
3605 /* Disable (but don't clear!) interrupts here to avoid
3606 * back-to-back ISRs and sporadic interrupts from our NIC.
3607 * If we have something to service, the tasklet will re-enable ints.
3608 * If we *don't* have something, we'll re-enable before leaving here. */
3609 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
3610 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
3611
3612 /* Discover which interrupts are active/pending */
3613 inta = iwl_read32(priv, CSR_INT);
3614 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
3615
3616 /* Ignore interrupt if there's nothing in NIC to service.
3617 * This may be due to IRQ shared with another device,
3618 * or due to sporadic interrupts thrown from our NIC. */
3619 if (!inta && !inta_fh) {
3620 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
3621 goto none;
3622 }
3623
3624 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
3625 /* Hardware disappeared. It might have already raised
3626 * an interrupt */
3627 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
3628 goto unplugged;
3629 }
3630
3631 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
3632 inta, inta_mask, inta_fh);
3633
3634 inta &= ~CSR_INT_BIT_SCD;
3635
3636 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
3637 if (likely(inta || inta_fh))
3638 tasklet_schedule(&priv->irq_tasklet);
3639
3640 unplugged:
3641 spin_unlock(&priv->lock);
3642 return IRQ_HANDLED;
3643
3644 none:
3645 /* re-enable interrupts here since we don't have anything to service. */
3646 /* only Re-enable if diabled by irq */
3647 if (test_bit(STATUS_INT_ENABLED, &priv->status))
3648 iwl4965_enable_interrupts(priv);
3649 spin_unlock(&priv->lock);
3650 return IRQ_NONE;
3651 }
3652
3653 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
3654 * sending probe req. This should be set long enough to hear probe responses
3655 * from more than one AP. */
3656 #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
3657 #define IWL_ACTIVE_DWELL_TIME_52 (10)
3658
3659 /* For faster active scanning, scan will move to the next channel if fewer than
3660 * PLCP_QUIET_THRESH packets are heard on this channel within
3661 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
3662 * time if it's a quiet channel (nothing responded to our probe, and there's
3663 * no other traffic).
3664 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
3665 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
3666 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
3667
3668 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
3669 * Must be set longer than active dwell time.
3670 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
3671 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
3672 #define IWL_PASSIVE_DWELL_TIME_52 (10)
3673 #define IWL_PASSIVE_DWELL_BASE (100)
3674 #define IWL_CHANNEL_TUNE_TIME 5
3675
3676 static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
3677 enum ieee80211_band band)
3678 {
3679 if (band == IEEE80211_BAND_5GHZ)
3680 return IWL_ACTIVE_DWELL_TIME_52;
3681 else
3682 return IWL_ACTIVE_DWELL_TIME_24;
3683 }
3684
3685 static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
3686 enum ieee80211_band band)
3687 {
3688 u16 active = iwl4965_get_active_dwell_time(priv, band);
3689 u16 passive = (band != IEEE80211_BAND_5GHZ) ?
3690 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
3691 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
3692
3693 if (iwl_is_associated(priv)) {
3694 /* If we're associated, we clamp the maximum passive
3695 * dwell time to be 98% of the beacon interval (minus
3696 * 2 * channel tune time) */
3697 passive = priv->beacon_int;
3698 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
3699 passive = IWL_PASSIVE_DWELL_BASE;
3700 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
3701 }
3702
3703 if (passive <= active)
3704 passive = active + 1;
3705
3706 return passive;
3707 }
3708
3709 static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
3710 enum ieee80211_band band,
3711 u8 is_active, u8 direct_mask,
3712 struct iwl4965_scan_channel *scan_ch)
3713 {
3714 const struct ieee80211_channel *channels = NULL;
3715 const struct ieee80211_supported_band *sband;
3716 const struct iwl_channel_info *ch_info;
3717 u16 passive_dwell = 0;
3718 u16 active_dwell = 0;
3719 int added, i;
3720
3721 sband = iwl_get_hw_mode(priv, band);
3722 if (!sband)
3723 return 0;
3724
3725 channels = sband->channels;
3726
3727 active_dwell = iwl4965_get_active_dwell_time(priv, band);
3728 passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
3729
3730 for (i = 0, added = 0; i < sband->n_channels; i++) {
3731 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
3732 continue;
3733
3734 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
3735
3736 ch_info = iwl_get_channel_info(priv, band,
3737 scan_ch->channel);
3738 if (!is_channel_valid(ch_info)) {
3739 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
3740 scan_ch->channel);
3741 continue;
3742 }
3743
3744 if (!is_active || is_channel_passive(ch_info) ||
3745 (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
3746 scan_ch->type = 0; /* passive */
3747 else
3748 scan_ch->type = 1; /* active */
3749
3750 if (scan_ch->type & 1)
3751 scan_ch->type |= (direct_mask << 1);
3752
3753 scan_ch->active_dwell = cpu_to_le16(active_dwell);
3754 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
3755
3756 /* Set txpower levels to defaults */
3757 scan_ch->tpc.dsp_atten = 110;
3758 /* scan_pwr_info->tpc.dsp_atten; */
3759
3760 /*scan_pwr_info->tpc.tx_gain; */
3761 if (band == IEEE80211_BAND_5GHZ)
3762 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
3763 else {
3764 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
3765 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
3766 * power level:
3767 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
3768 */
3769 }
3770
3771 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
3772 scan_ch->channel,
3773 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
3774 (scan_ch->type & 1) ?
3775 active_dwell : passive_dwell);
3776
3777 scan_ch++;
3778 added++;
3779 }
3780
3781 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
3782 return added;
3783 }
3784
3785 /******************************************************************************
3786 *
3787 * uCode download functions
3788 *
3789 ******************************************************************************/
3790
3791 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
3792 {
3793 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
3794 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
3795 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
3796 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
3797 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
3798 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
3799 }
3800
3801 static void iwl4965_nic_start(struct iwl_priv *priv)
3802 {
3803 /* Remove all resets to allow NIC to operate */
3804 iwl_write32(priv, CSR_RESET, 0);
3805 }
3806
3807
3808 /**
3809 * iwl4965_read_ucode - Read uCode images from disk file.
3810 *
3811 * Copy into buffers for card to fetch via bus-mastering
3812 */
3813 static int iwl4965_read_ucode(struct iwl_priv *priv)
3814 {
3815 struct iwl4965_ucode *ucode;
3816 int ret;
3817 const struct firmware *ucode_raw;
3818 const char *name = priv->cfg->fw_name;
3819 u8 *src;
3820 size_t len;
3821 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
3822
3823 /* Ask kernel firmware_class module to get the boot firmware off disk.
3824 * request_firmware() is synchronous, file is in memory on return. */
3825 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
3826 if (ret < 0) {
3827 IWL_ERROR("%s firmware file req failed: Reason %d\n",
3828 name, ret);
3829 goto error;
3830 }
3831
3832 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
3833 name, ucode_raw->size);
3834
3835 /* Make sure that we got at least our header! */
3836 if (ucode_raw->size < sizeof(*ucode)) {
3837 IWL_ERROR("File size way too small!\n");
3838 ret = -EINVAL;
3839 goto err_release;
3840 }
3841
3842 /* Data from ucode file: header followed by uCode images */
3843 ucode = (void *)ucode_raw->data;
3844
3845 ver = le32_to_cpu(ucode->ver);
3846 inst_size = le32_to_cpu(ucode->inst_size);
3847 data_size = le32_to_cpu(ucode->data_size);
3848 init_size = le32_to_cpu(ucode->init_size);
3849 init_data_size = le32_to_cpu(ucode->init_data_size);
3850 boot_size = le32_to_cpu(ucode->boot_size);
3851
3852 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
3853 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
3854 inst_size);
3855 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
3856 data_size);
3857 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
3858 init_size);
3859 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
3860 init_data_size);
3861 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
3862 boot_size);
3863
3864 /* Verify size of file vs. image size info in file's header */
3865 if (ucode_raw->size < sizeof(*ucode) +
3866 inst_size + data_size + init_size +
3867 init_data_size + boot_size) {
3868
3869 IWL_DEBUG_INFO("uCode file size %d too small\n",
3870 (int)ucode_raw->size);
3871 ret = -EINVAL;
3872 goto err_release;
3873 }
3874
3875 /* Verify that uCode images will fit in card's SRAM */
3876 if (inst_size > priv->hw_params.max_inst_size) {
3877 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
3878 inst_size);
3879 ret = -EINVAL;
3880 goto err_release;
3881 }
3882
3883 if (data_size > priv->hw_params.max_data_size) {
3884 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
3885 data_size);
3886 ret = -EINVAL;
3887 goto err_release;
3888 }
3889 if (init_size > priv->hw_params.max_inst_size) {
3890 IWL_DEBUG_INFO
3891 ("uCode init instr len %d too large to fit in\n",
3892 init_size);
3893 ret = -EINVAL;
3894 goto err_release;
3895 }
3896 if (init_data_size > priv->hw_params.max_data_size) {
3897 IWL_DEBUG_INFO
3898 ("uCode init data len %d too large to fit in\n",
3899 init_data_size);
3900 ret = -EINVAL;
3901 goto err_release;
3902 }
3903 if (boot_size > priv->hw_params.max_bsm_size) {
3904 IWL_DEBUG_INFO
3905 ("uCode boot instr len %d too large to fit in\n",
3906 boot_size);
3907 ret = -EINVAL;
3908 goto err_release;
3909 }
3910
3911 /* Allocate ucode buffers for card's bus-master loading ... */
3912
3913 /* Runtime instructions and 2 copies of data:
3914 * 1) unmodified from disk
3915 * 2) backup cache for save/restore during power-downs */
3916 priv->ucode_code.len = inst_size;
3917 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
3918
3919 priv->ucode_data.len = data_size;
3920 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
3921
3922 priv->ucode_data_backup.len = data_size;
3923 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
3924
3925 /* Initialization instructions and data */
3926 if (init_size && init_data_size) {
3927 priv->ucode_init.len = init_size;
3928 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
3929
3930 priv->ucode_init_data.len = init_data_size;
3931 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
3932
3933 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
3934 goto err_pci_alloc;
3935 }
3936
3937 /* Bootstrap (instructions only, no data) */
3938 if (boot_size) {
3939 priv->ucode_boot.len = boot_size;
3940 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
3941
3942 if (!priv->ucode_boot.v_addr)
3943 goto err_pci_alloc;
3944 }
3945
3946 /* Copy images into buffers for card's bus-master reads ... */
3947
3948 /* Runtime instructions (first block of data in file) */
3949 src = &ucode->data[0];
3950 len = priv->ucode_code.len;
3951 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
3952 memcpy(priv->ucode_code.v_addr, src, len);
3953 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
3954 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
3955
3956 /* Runtime data (2nd block)
3957 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
3958 src = &ucode->data[inst_size];
3959 len = priv->ucode_data.len;
3960 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
3961 memcpy(priv->ucode_data.v_addr, src, len);
3962 memcpy(priv->ucode_data_backup.v_addr, src, len);
3963
3964 /* Initialization instructions (3rd block) */
3965 if (init_size) {
3966 src = &ucode->data[inst_size + data_size];
3967 len = priv->ucode_init.len;
3968 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
3969 len);
3970 memcpy(priv->ucode_init.v_addr, src, len);
3971 }
3972
3973 /* Initialization data (4th block) */
3974 if (init_data_size) {
3975 src = &ucode->data[inst_size + data_size + init_size];
3976 len = priv->ucode_init_data.len;
3977 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
3978 len);
3979 memcpy(priv->ucode_init_data.v_addr, src, len);
3980 }
3981
3982 /* Bootstrap instructions (5th block) */
3983 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
3984 len = priv->ucode_boot.len;
3985 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
3986 memcpy(priv->ucode_boot.v_addr, src, len);
3987
3988 /* We have our copies now, allow OS release its copies */
3989 release_firmware(ucode_raw);
3990 return 0;
3991
3992 err_pci_alloc:
3993 IWL_ERROR("failed to allocate pci memory\n");
3994 ret = -ENOMEM;
3995 iwl4965_dealloc_ucode_pci(priv);
3996
3997 err_release:
3998 release_firmware(ucode_raw);
3999
4000 error:
4001 return ret;
4002 }
4003
4004 /**
4005 * iwl4965_alive_start - called after REPLY_ALIVE notification received
4006 * from protocol/runtime uCode (initialization uCode's
4007 * Alive gets handled by iwl4965_init_alive_start()).
4008 */
4009 static void iwl4965_alive_start(struct iwl_priv *priv)
4010 {
4011 int ret = 0;
4012
4013 IWL_DEBUG_INFO("Runtime Alive received.\n");
4014
4015 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
4016 /* We had an error bringing up the hardware, so take it
4017 * all the way back down so we can try again */
4018 IWL_DEBUG_INFO("Alive failed.\n");
4019 goto restart;
4020 }
4021
4022 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
4023 * This is a paranoid check, because we would not have gotten the
4024 * "runtime" alive if code weren't properly loaded. */
4025 if (iwl_verify_ucode(priv)) {
4026 /* Runtime instruction load was bad;
4027 * take it all the way back down so we can try again */
4028 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
4029 goto restart;
4030 }
4031
4032 iwlcore_clear_stations_table(priv);
4033
4034 ret = priv->cfg->ops->lib->alive_notify(priv);
4035 if (ret) {
4036 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
4037 ret);
4038 goto restart;
4039 }
4040
4041 /* After the ALIVE response, we can send host commands to 4965 uCode */
4042 set_bit(STATUS_ALIVE, &priv->status);
4043
4044 /* Clear out the uCode error bit if it is set */
4045 clear_bit(STATUS_FW_ERROR, &priv->status);
4046
4047 if (iwl_is_rfkill(priv))
4048 return;
4049
4050 ieee80211_start_queues(priv->hw);
4051
4052 priv->active_rate = priv->rates_mask;
4053 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
4054
4055 if (iwl_is_associated(priv)) {
4056 struct iwl_rxon_cmd *active_rxon =
4057 (struct iwl_rxon_cmd *)&priv->active_rxon;
4058
4059 memcpy(&priv->staging_rxon, &priv->active_rxon,
4060 sizeof(priv->staging_rxon));
4061 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4062 } else {
4063 /* Initialize our rx_config data */
4064 iwl4965_connection_init_rx_config(priv);
4065 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
4066 }
4067
4068 /* Configure Bluetooth device coexistence support */
4069 iwl4965_send_bt_config(priv);
4070
4071 /* Configure the adapter for unassociated operation */
4072 iwl4965_commit_rxon(priv);
4073
4074 /* At this point, the NIC is initialized and operational */
4075 priv->notif_missed_beacons = 0;
4076
4077 iwl4965_rf_kill_ct_config(priv);
4078
4079 iwl_leds_register(priv);
4080
4081 IWL_DEBUG_INFO("ALIVE processing complete.\n");
4082 set_bit(STATUS_READY, &priv->status);
4083 wake_up_interruptible(&priv->wait_command_queue);
4084
4085 if (priv->error_recovering)
4086 iwl4965_error_recovery(priv);
4087
4088 iwlcore_low_level_notify(priv, IWLCORE_START_EVT);
4089 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
4090 return;
4091
4092 restart:
4093 queue_work(priv->workqueue, &priv->restart);
4094 }
4095
4096 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv);
4097
4098 static void __iwl4965_down(struct iwl_priv *priv)
4099 {
4100 unsigned long flags;
4101 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
4102 struct ieee80211_conf *conf = NULL;
4103
4104 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
4105
4106 conf = ieee80211_get_hw_conf(priv->hw);
4107
4108 if (!exit_pending)
4109 set_bit(STATUS_EXIT_PENDING, &priv->status);
4110
4111 iwl_leds_unregister(priv);
4112
4113 iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT);
4114
4115 iwlcore_clear_stations_table(priv);
4116
4117 /* Unblock any waiting calls */
4118 wake_up_interruptible_all(&priv->wait_command_queue);
4119
4120 /* Wipe out the EXIT_PENDING status bit if we are not actually
4121 * exiting the module */
4122 if (!exit_pending)
4123 clear_bit(STATUS_EXIT_PENDING, &priv->status);
4124
4125 /* stop and reset the on-board processor */
4126 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
4127
4128 /* tell the device to stop sending interrupts */
4129 spin_lock_irqsave(&priv->lock, flags);
4130 iwl4965_disable_interrupts(priv);
4131 spin_unlock_irqrestore(&priv->lock, flags);
4132 iwl_synchronize_irq(priv);
4133
4134 if (priv->mac80211_registered)
4135 ieee80211_stop_queues(priv->hw);
4136
4137 /* If we have not previously called iwl4965_init() then
4138 * clear all bits but the RF Kill and SUSPEND bits and return */
4139 if (!iwl_is_init(priv)) {
4140 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
4141 STATUS_RF_KILL_HW |
4142 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
4143 STATUS_RF_KILL_SW |
4144 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
4145 STATUS_GEO_CONFIGURED |
4146 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
4147 STATUS_IN_SUSPEND;
4148 goto exit;
4149 }
4150
4151 /* ...otherwise clear out all the status bits but the RF Kill and
4152 * SUSPEND bits and continue taking the NIC down. */
4153 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
4154 STATUS_RF_KILL_HW |
4155 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
4156 STATUS_RF_KILL_SW |
4157 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
4158 STATUS_GEO_CONFIGURED |
4159 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
4160 STATUS_IN_SUSPEND |
4161 test_bit(STATUS_FW_ERROR, &priv->status) <<
4162 STATUS_FW_ERROR;
4163
4164 spin_lock_irqsave(&priv->lock, flags);
4165 iwl_clear_bit(priv, CSR_GP_CNTRL,
4166 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4167 spin_unlock_irqrestore(&priv->lock, flags);
4168
4169 iwl4965_hw_txq_ctx_stop(priv);
4170 iwl4965_hw_rxq_stop(priv);
4171
4172 spin_lock_irqsave(&priv->lock, flags);
4173 if (!iwl_grab_nic_access(priv)) {
4174 iwl_write_prph(priv, APMG_CLK_DIS_REG,
4175 APMG_CLK_VAL_DMA_CLK_RQT);
4176 iwl_release_nic_access(priv);
4177 }
4178 spin_unlock_irqrestore(&priv->lock, flags);
4179
4180 udelay(5);
4181
4182 iwl4965_hw_nic_stop_master(priv);
4183 iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
4184 iwl4965_hw_nic_reset(priv);
4185 priv->cfg->ops->lib->free_shared_mem(priv);
4186
4187 exit:
4188 memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
4189
4190 if (priv->ibss_beacon)
4191 dev_kfree_skb(priv->ibss_beacon);
4192 priv->ibss_beacon = NULL;
4193
4194 /* clear out any free frames */
4195 iwl_clear_free_frames(priv);
4196 }
4197
4198 static void iwl4965_down(struct iwl_priv *priv)
4199 {
4200 mutex_lock(&priv->mutex);
4201 __iwl4965_down(priv);
4202 mutex_unlock(&priv->mutex);
4203
4204 iwl4965_cancel_deferred_work(priv);
4205 }
4206
4207 #define MAX_HW_RESTARTS 5
4208
4209 static int __iwl4965_up(struct iwl_priv *priv)
4210 {
4211 int i;
4212 int ret;
4213
4214 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4215 IWL_WARNING("Exit pending; will not bring the NIC up\n");
4216 return -EIO;
4217 }
4218
4219 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
4220 IWL_WARNING("Radio disabled by SW RF kill (module "
4221 "parameter)\n");
4222 iwl_rfkill_set_hw_state(priv);
4223 return -ENODEV;
4224 }
4225
4226 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
4227 IWL_ERROR("ucode not available for device bringup\n");
4228 return -EIO;
4229 }
4230
4231 /* If platform's RF_KILL switch is NOT set to KILL */
4232 if (iwl_read32(priv, CSR_GP_CNTRL) &
4233 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
4234 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4235 else {
4236 set_bit(STATUS_RF_KILL_HW, &priv->status);
4237 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
4238 iwl_rfkill_set_hw_state(priv);
4239 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
4240 return -ENODEV;
4241 }
4242 }
4243
4244 iwl_rfkill_set_hw_state(priv);
4245 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
4246
4247 ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
4248 if (ret) {
4249 IWL_ERROR("Unable to allocate shared memory\n");
4250 return ret;
4251 }
4252
4253 ret = iwl_hw_nic_init(priv);
4254 if (ret) {
4255 IWL_ERROR("Unable to init nic\n");
4256 return ret;
4257 }
4258
4259 /* make sure rfkill handshake bits are cleared */
4260 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
4261 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
4262 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4263
4264 /* clear (again), then enable host interrupts */
4265 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
4266 iwl4965_enable_interrupts(priv);
4267
4268 /* really make sure rfkill handshake bits are cleared */
4269 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
4270 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
4271
4272 /* Copy original ucode data image from disk into backup cache.
4273 * This will be used to initialize the on-board processor's
4274 * data SRAM for a clean start when the runtime program first loads. */
4275 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
4276 priv->ucode_data.len);
4277
4278 /* We return success when we resume from suspend and rf_kill is on. */
4279 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
4280 return 0;
4281
4282 for (i = 0; i < MAX_HW_RESTARTS; i++) {
4283
4284 iwlcore_clear_stations_table(priv);
4285
4286 /* load bootstrap state machine,
4287 * load bootstrap program into processor's memory,
4288 * prepare to load the "initialize" uCode */
4289 ret = priv->cfg->ops->lib->load_ucode(priv);
4290
4291 if (ret) {
4292 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
4293 continue;
4294 }
4295
4296 /* start card; "initialize" will load runtime ucode */
4297 iwl4965_nic_start(priv);
4298
4299 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
4300
4301 return 0;
4302 }
4303
4304 set_bit(STATUS_EXIT_PENDING, &priv->status);
4305 __iwl4965_down(priv);
4306
4307 /* tried to restart and config the device for as long as our
4308 * patience could withstand */
4309 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
4310 return -EIO;
4311 }
4312
4313
4314 /*****************************************************************************
4315 *
4316 * Workqueue callbacks
4317 *
4318 *****************************************************************************/
4319
4320 static void iwl4965_bg_init_alive_start(struct work_struct *data)
4321 {
4322 struct iwl_priv *priv =
4323 container_of(data, struct iwl_priv, init_alive_start.work);
4324
4325 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4326 return;
4327
4328 mutex_lock(&priv->mutex);
4329 priv->cfg->ops->lib->init_alive_start(priv);
4330 mutex_unlock(&priv->mutex);
4331 }
4332
4333 static void iwl4965_bg_alive_start(struct work_struct *data)
4334 {
4335 struct iwl_priv *priv =
4336 container_of(data, struct iwl_priv, alive_start.work);
4337
4338 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4339 return;
4340
4341 mutex_lock(&priv->mutex);
4342 iwl4965_alive_start(priv);
4343 mutex_unlock(&priv->mutex);
4344 }
4345
4346 static void iwl4965_bg_rf_kill(struct work_struct *work)
4347 {
4348 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
4349
4350 wake_up_interruptible(&priv->wait_command_queue);
4351
4352 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4353 return;
4354
4355 mutex_lock(&priv->mutex);
4356
4357 if (!iwl_is_rfkill(priv)) {
4358 IWL_DEBUG(IWL_DL_RF_KILL,
4359 "HW and/or SW RF Kill no longer active, restarting "
4360 "device\n");
4361 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
4362 queue_work(priv->workqueue, &priv->restart);
4363 } else {
4364 /* make sure mac80211 stop sending Tx frame */
4365 if (priv->mac80211_registered)
4366 ieee80211_stop_queues(priv->hw);
4367
4368 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
4369 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
4370 "disabled by SW switch\n");
4371 else
4372 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
4373 "Kill switch must be turned off for "
4374 "wireless networking to work.\n");
4375 }
4376 iwl_rfkill_set_hw_state(priv);
4377
4378 mutex_unlock(&priv->mutex);
4379 }
4380
4381 static void iwl4965_bg_set_monitor(struct work_struct *work)
4382 {
4383 struct iwl_priv *priv = container_of(work,
4384 struct iwl_priv, set_monitor);
4385
4386 IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
4387
4388 mutex_lock(&priv->mutex);
4389
4390 if (!iwl_is_ready(priv))
4391 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
4392 else
4393 if (iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR) != 0)
4394 IWL_ERROR("iwl4965_set_mode() failed\n");
4395
4396 mutex_unlock(&priv->mutex);
4397 }
4398
4399 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
4400
4401 static void iwl4965_bg_scan_check(struct work_struct *data)
4402 {
4403 struct iwl_priv *priv =
4404 container_of(data, struct iwl_priv, scan_check.work);
4405
4406 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4407 return;
4408
4409 mutex_lock(&priv->mutex);
4410 if (test_bit(STATUS_SCANNING, &priv->status) ||
4411 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
4412 IWL_DEBUG(IWL_DL_SCAN, "Scan completion watchdog resetting "
4413 "adapter (%dms)\n",
4414 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
4415
4416 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
4417 iwl4965_send_scan_abort(priv);
4418 }
4419 mutex_unlock(&priv->mutex);
4420 }
4421
4422 static void iwl4965_bg_request_scan(struct work_struct *data)
4423 {
4424 struct iwl_priv *priv =
4425 container_of(data, struct iwl_priv, request_scan);
4426 struct iwl_host_cmd cmd = {
4427 .id = REPLY_SCAN_CMD,
4428 .len = sizeof(struct iwl4965_scan_cmd),
4429 .meta.flags = CMD_SIZE_HUGE,
4430 };
4431 struct iwl4965_scan_cmd *scan;
4432 struct ieee80211_conf *conf = NULL;
4433 u16 cmd_len;
4434 enum ieee80211_band band;
4435 u8 direct_mask;
4436 int ret = 0;
4437
4438 conf = ieee80211_get_hw_conf(priv->hw);
4439
4440 mutex_lock(&priv->mutex);
4441
4442 if (!iwl_is_ready(priv)) {
4443 IWL_WARNING("request scan called when driver not ready.\n");
4444 goto done;
4445 }
4446
4447 /* Make sure the scan wasn't cancelled before this queued work
4448 * was given the chance to run... */
4449 if (!test_bit(STATUS_SCANNING, &priv->status))
4450 goto done;
4451
4452 /* This should never be called or scheduled if there is currently
4453 * a scan active in the hardware. */
4454 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
4455 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
4456 "Ignoring second request.\n");
4457 ret = -EIO;
4458 goto done;
4459 }
4460
4461 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4462 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
4463 goto done;
4464 }
4465
4466 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
4467 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
4468 goto done;
4469 }
4470
4471 if (iwl_is_rfkill(priv)) {
4472 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
4473 goto done;
4474 }
4475
4476 if (!test_bit(STATUS_READY, &priv->status)) {
4477 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
4478 goto done;
4479 }
4480
4481 if (!priv->scan_bands) {
4482 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
4483 goto done;
4484 }
4485
4486 if (!priv->scan) {
4487 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
4488 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
4489 if (!priv->scan) {
4490 ret = -ENOMEM;
4491 goto done;
4492 }
4493 }
4494 scan = priv->scan;
4495 memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
4496
4497 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
4498 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
4499
4500 if (iwl_is_associated(priv)) {
4501 u16 interval = 0;
4502 u32 extra;
4503 u32 suspend_time = 100;
4504 u32 scan_suspend_time = 100;
4505 unsigned long flags;
4506
4507 IWL_DEBUG_INFO("Scanning while associated...\n");
4508
4509 spin_lock_irqsave(&priv->lock, flags);
4510 interval = priv->beacon_int;
4511 spin_unlock_irqrestore(&priv->lock, flags);
4512
4513 scan->suspend_time = 0;
4514 scan->max_out_time = cpu_to_le32(200 * 1024);
4515 if (!interval)
4516 interval = suspend_time;
4517
4518 extra = (suspend_time / interval) << 22;
4519 scan_suspend_time = (extra |
4520 ((suspend_time % interval) * 1024));
4521 scan->suspend_time = cpu_to_le32(scan_suspend_time);
4522 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
4523 scan_suspend_time, interval);
4524 }
4525
4526 /* We should add the ability for user to lock to PASSIVE ONLY */
4527 if (priv->one_direct_scan) {
4528 IWL_DEBUG_SCAN
4529 ("Kicking off one direct scan for '%s'\n",
4530 iwl4965_escape_essid(priv->direct_ssid,
4531 priv->direct_ssid_len));
4532 scan->direct_scan[0].id = WLAN_EID_SSID;
4533 scan->direct_scan[0].len = priv->direct_ssid_len;
4534 memcpy(scan->direct_scan[0].ssid,
4535 priv->direct_ssid, priv->direct_ssid_len);
4536 direct_mask = 1;
4537 } else if (!iwl_is_associated(priv) && priv->essid_len) {
4538 IWL_DEBUG_SCAN
4539 ("Kicking off one direct scan for '%s' when not associated\n",
4540 iwl4965_escape_essid(priv->essid, priv->essid_len));
4541 scan->direct_scan[0].id = WLAN_EID_SSID;
4542 scan->direct_scan[0].len = priv->essid_len;
4543 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
4544 direct_mask = 1;
4545 } else {
4546 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
4547 direct_mask = 0;
4548 }
4549
4550 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
4551 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
4552 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
4553
4554
4555 switch (priv->scan_bands) {
4556 case 2:
4557 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
4558 scan->tx_cmd.rate_n_flags =
4559 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
4560 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
4561
4562 scan->good_CRC_th = 0;
4563 band = IEEE80211_BAND_2GHZ;
4564 break;
4565
4566 case 1:
4567 scan->tx_cmd.rate_n_flags =
4568 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
4569 RATE_MCS_ANT_B_MSK);
4570 scan->good_CRC_th = IWL_GOOD_CRC_TH;
4571 band = IEEE80211_BAND_5GHZ;
4572 break;
4573
4574 default:
4575 IWL_WARNING("Invalid scan band count\n");
4576 goto done;
4577 }
4578
4579 /* We don't build a direct scan probe request; the uCode will do
4580 * that based on the direct_mask added to each channel entry */
4581 cmd_len = iwl4965_fill_probe_req(priv, band,
4582 (struct ieee80211_mgmt *)scan->data,
4583 IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
4584
4585 scan->tx_cmd.len = cpu_to_le16(cmd_len);
4586 /* select Rx chains */
4587
4588 /* Force use of chains B and C (0x6) for scan Rx.
4589 * Avoid A (0x1) because of its off-channel reception on A-band.
4590 * MIMO is not used here, but value is required to make uCode happy. */
4591 scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
4592 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
4593 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
4594 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
4595
4596 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
4597 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
4598
4599 if (direct_mask)
4600 scan->channel_count =
4601 iwl4965_get_channels_for_scan(
4602 priv, band, 1, /* active */
4603 direct_mask,
4604 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
4605 else
4606 scan->channel_count =
4607 iwl4965_get_channels_for_scan(
4608 priv, band, 0, /* passive */
4609 direct_mask,
4610 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
4611
4612 scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK |
4613 RXON_FILTER_BCON_AWARE_MSK);
4614 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
4615 scan->channel_count * sizeof(struct iwl4965_scan_channel);
4616 cmd.data = scan;
4617 scan->len = cpu_to_le16(cmd.len);
4618
4619 set_bit(STATUS_SCAN_HW, &priv->status);
4620 ret = iwl_send_cmd_sync(priv, &cmd);
4621 if (ret)
4622 goto done;
4623
4624 queue_delayed_work(priv->workqueue, &priv->scan_check,
4625 IWL_SCAN_CHECK_WATCHDOG);
4626
4627 mutex_unlock(&priv->mutex);
4628 return;
4629
4630 done:
4631 /* inform mac80211 scan aborted */
4632 queue_work(priv->workqueue, &priv->scan_completed);
4633 mutex_unlock(&priv->mutex);
4634 }
4635
4636 static void iwl4965_bg_up(struct work_struct *data)
4637 {
4638 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
4639
4640 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4641 return;
4642
4643 mutex_lock(&priv->mutex);
4644 __iwl4965_up(priv);
4645 mutex_unlock(&priv->mutex);
4646 }
4647
4648 static void iwl4965_bg_restart(struct work_struct *data)
4649 {
4650 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
4651
4652 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4653 return;
4654
4655 iwl4965_down(priv);
4656 queue_work(priv->workqueue, &priv->up);
4657 }
4658
4659 static void iwl4965_bg_rx_replenish(struct work_struct *data)
4660 {
4661 struct iwl_priv *priv =
4662 container_of(data, struct iwl_priv, rx_replenish);
4663
4664 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4665 return;
4666
4667 mutex_lock(&priv->mutex);
4668 iwl_rx_replenish(priv);
4669 mutex_unlock(&priv->mutex);
4670 }
4671
4672 #define IWL_DELAY_NEXT_SCAN (HZ*2)
4673
4674 static void iwl4965_post_associate(struct iwl_priv *priv)
4675 {
4676 struct ieee80211_conf *conf = NULL;
4677 int ret = 0;
4678 DECLARE_MAC_BUF(mac);
4679
4680 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
4681 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
4682 return;
4683 }
4684
4685 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
4686 priv->assoc_id,
4687 print_mac(mac, priv->active_rxon.bssid_addr));
4688
4689
4690 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4691 return;
4692
4693
4694 if (!priv->vif || !priv->is_open)
4695 return;
4696
4697 iwl4965_scan_cancel_timeout(priv, 200);
4698
4699 conf = ieee80211_get_hw_conf(priv->hw);
4700
4701 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4702 iwl4965_commit_rxon(priv);
4703
4704 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
4705 iwl4965_setup_rxon_timing(priv);
4706 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
4707 sizeof(priv->rxon_timing), &priv->rxon_timing);
4708 if (ret)
4709 IWL_WARNING("REPLY_RXON_TIMING failed - "
4710 "Attempting to continue.\n");
4711
4712 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
4713
4714 #ifdef CONFIG_IWL4965_HT
4715 if (priv->current_ht_config.is_ht)
4716 iwl_set_rxon_ht(priv, &priv->current_ht_config);
4717 #endif /* CONFIG_IWL4965_HT*/
4718 iwl_set_rxon_chain(priv);
4719 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
4720
4721 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
4722 priv->assoc_id, priv->beacon_int);
4723
4724 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
4725 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
4726 else
4727 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
4728
4729 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
4730 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
4731 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
4732 else
4733 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
4734
4735 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
4736 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
4737
4738 }
4739
4740 iwl4965_commit_rxon(priv);
4741
4742 switch (priv->iw_mode) {
4743 case IEEE80211_IF_TYPE_STA:
4744 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
4745 break;
4746
4747 case IEEE80211_IF_TYPE_IBSS:
4748
4749 /* clear out the station table */
4750 iwlcore_clear_stations_table(priv);
4751
4752 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
4753 iwl_rxon_add_station(priv, priv->bssid, 0);
4754 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
4755 iwl4965_send_beacon_cmd(priv);
4756
4757 break;
4758
4759 default:
4760 IWL_ERROR("%s Should not be called in %d mode\n",
4761 __FUNCTION__, priv->iw_mode);
4762 break;
4763 }
4764
4765 iwl4965_sequence_reset(priv);
4766
4767 /* Enable Rx differential gain and sensitivity calibrations */
4768 iwl_chain_noise_reset(priv);
4769 priv->start_calib = 1;
4770
4771 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
4772 priv->assoc_station_added = 1;
4773
4774 iwl4965_activate_qos(priv, 0);
4775
4776 iwl_power_update_mode(priv, 0);
4777 /* we have just associated, don't start scan too early */
4778 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
4779 }
4780
4781
4782 static void iwl4965_bg_post_associate(struct work_struct *data)
4783 {
4784 struct iwl_priv *priv = container_of(data, struct iwl_priv,
4785 post_associate.work);
4786
4787 mutex_lock(&priv->mutex);
4788 iwl4965_post_associate(priv);
4789 mutex_unlock(&priv->mutex);
4790
4791 }
4792
4793 static void iwl4965_bg_abort_scan(struct work_struct *work)
4794 {
4795 struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
4796
4797 if (!iwl_is_ready(priv))
4798 return;
4799
4800 mutex_lock(&priv->mutex);
4801
4802 set_bit(STATUS_SCAN_ABORTING, &priv->status);
4803 iwl4965_send_scan_abort(priv);
4804
4805 mutex_unlock(&priv->mutex);
4806 }
4807
4808 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
4809
4810 static void iwl4965_bg_scan_completed(struct work_struct *work)
4811 {
4812 struct iwl_priv *priv =
4813 container_of(work, struct iwl_priv, scan_completed);
4814
4815 IWL_DEBUG(IWL_DL_SCAN, "SCAN complete scan\n");
4816
4817 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4818 return;
4819
4820 if (test_bit(STATUS_CONF_PENDING, &priv->status))
4821 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
4822
4823 ieee80211_scan_completed(priv->hw);
4824
4825 /* Since setting the TXPOWER may have been deferred while
4826 * performing the scan, fire one off */
4827 mutex_lock(&priv->mutex);
4828 iwl4965_hw_reg_send_txpower(priv);
4829 mutex_unlock(&priv->mutex);
4830 }
4831
4832 /*****************************************************************************
4833 *
4834 * mac80211 entry point functions
4835 *
4836 *****************************************************************************/
4837
4838 #define UCODE_READY_TIMEOUT (2 * HZ)
4839
4840 static int iwl4965_mac_start(struct ieee80211_hw *hw)
4841 {
4842 struct iwl_priv *priv = hw->priv;
4843 int ret;
4844
4845 IWL_DEBUG_MAC80211("enter\n");
4846
4847 if (pci_enable_device(priv->pci_dev)) {
4848 IWL_ERROR("Fail to pci_enable_device\n");
4849 return -ENODEV;
4850 }
4851 pci_restore_state(priv->pci_dev);
4852 pci_enable_msi(priv->pci_dev);
4853
4854 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
4855 DRV_NAME, priv);
4856 if (ret) {
4857 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
4858 goto out_disable_msi;
4859 }
4860
4861 /* we should be verifying the device is ready to be opened */
4862 mutex_lock(&priv->mutex);
4863
4864 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
4865 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
4866 * ucode filename and max sizes are card-specific. */
4867
4868 if (!priv->ucode_code.len) {
4869 ret = iwl4965_read_ucode(priv);
4870 if (ret) {
4871 IWL_ERROR("Could not read microcode: %d\n", ret);
4872 mutex_unlock(&priv->mutex);
4873 goto out_release_irq;
4874 }
4875 }
4876
4877 ret = __iwl4965_up(priv);
4878
4879 mutex_unlock(&priv->mutex);
4880
4881 if (ret)
4882 goto out_release_irq;
4883
4884 IWL_DEBUG_INFO("Start UP work done.\n");
4885
4886 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
4887 return 0;
4888
4889 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
4890 * mac80211 will not be run successfully. */
4891 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
4892 test_bit(STATUS_READY, &priv->status),
4893 UCODE_READY_TIMEOUT);
4894 if (!ret) {
4895 if (!test_bit(STATUS_READY, &priv->status)) {
4896 IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
4897 jiffies_to_msecs(UCODE_READY_TIMEOUT));
4898 ret = -ETIMEDOUT;
4899 goto out_release_irq;
4900 }
4901 }
4902
4903 priv->is_open = 1;
4904 IWL_DEBUG_MAC80211("leave\n");
4905 return 0;
4906
4907 out_release_irq:
4908 free_irq(priv->pci_dev->irq, priv);
4909 out_disable_msi:
4910 pci_disable_msi(priv->pci_dev);
4911 pci_disable_device(priv->pci_dev);
4912 priv->is_open = 0;
4913 IWL_DEBUG_MAC80211("leave - failed\n");
4914 return ret;
4915 }
4916
4917 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
4918 {
4919 struct iwl_priv *priv = hw->priv;
4920
4921 IWL_DEBUG_MAC80211("enter\n");
4922
4923 if (!priv->is_open) {
4924 IWL_DEBUG_MAC80211("leave - skip\n");
4925 return;
4926 }
4927
4928 priv->is_open = 0;
4929
4930 if (iwl_is_ready_rf(priv)) {
4931 /* stop mac, cancel any scan request and clear
4932 * RXON_FILTER_ASSOC_MSK BIT
4933 */
4934 mutex_lock(&priv->mutex);
4935 iwl4965_scan_cancel_timeout(priv, 100);
4936 cancel_delayed_work(&priv->post_associate);
4937 mutex_unlock(&priv->mutex);
4938 }
4939
4940 iwl4965_down(priv);
4941
4942 flush_workqueue(priv->workqueue);
4943 free_irq(priv->pci_dev->irq, priv);
4944 pci_disable_msi(priv->pci_dev);
4945 pci_save_state(priv->pci_dev);
4946 pci_disable_device(priv->pci_dev);
4947
4948 IWL_DEBUG_MAC80211("leave\n");
4949 }
4950
4951 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
4952 struct ieee80211_tx_control *ctl)
4953 {
4954 struct iwl_priv *priv = hw->priv;
4955
4956 IWL_DEBUG_MAC80211("enter\n");
4957
4958 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
4959 IWL_DEBUG_MAC80211("leave - monitor\n");
4960 return -1;
4961 }
4962
4963 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
4964 ctl->tx_rate->bitrate);
4965
4966 if (iwl4965_tx_skb(priv, skb, ctl))
4967 dev_kfree_skb_any(skb);
4968
4969 IWL_DEBUG_MAC80211("leave\n");
4970 return 0;
4971 }
4972
4973 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
4974 struct ieee80211_if_init_conf *conf)
4975 {
4976 struct iwl_priv *priv = hw->priv;
4977 unsigned long flags;
4978 DECLARE_MAC_BUF(mac);
4979
4980 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
4981
4982 if (priv->vif) {
4983 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
4984 return -EOPNOTSUPP;
4985 }
4986
4987 spin_lock_irqsave(&priv->lock, flags);
4988 priv->vif = conf->vif;
4989
4990 spin_unlock_irqrestore(&priv->lock, flags);
4991
4992 mutex_lock(&priv->mutex);
4993
4994 if (conf->mac_addr) {
4995 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
4996 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
4997 }
4998
4999 if (iwl_is_ready(priv))
5000 iwl4965_set_mode(priv, conf->type);
5001
5002 mutex_unlock(&priv->mutex);
5003
5004 IWL_DEBUG_MAC80211("leave\n");
5005 return 0;
5006 }
5007
5008 /**
5009 * iwl4965_mac_config - mac80211 config callback
5010 *
5011 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
5012 * be set inappropriately and the driver currently sets the hardware up to
5013 * use it whenever needed.
5014 */
5015 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
5016 {
5017 struct iwl_priv *priv = hw->priv;
5018 const struct iwl_channel_info *ch_info;
5019 unsigned long flags;
5020 int ret = 0;
5021
5022 mutex_lock(&priv->mutex);
5023 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
5024
5025 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
5026
5027 if (!iwl_is_ready(priv)) {
5028 IWL_DEBUG_MAC80211("leave - not ready\n");
5029 ret = -EIO;
5030 goto out;
5031 }
5032
5033 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
5034 test_bit(STATUS_SCANNING, &priv->status))) {
5035 IWL_DEBUG_MAC80211("leave - scanning\n");
5036 set_bit(STATUS_CONF_PENDING, &priv->status);
5037 mutex_unlock(&priv->mutex);
5038 return 0;
5039 }
5040
5041 spin_lock_irqsave(&priv->lock, flags);
5042
5043 ch_info = iwl_get_channel_info(priv, conf->channel->band,
5044 ieee80211_frequency_to_channel(conf->channel->center_freq));
5045 if (!is_channel_valid(ch_info)) {
5046 IWL_DEBUG_MAC80211("leave - invalid channel\n");
5047 spin_unlock_irqrestore(&priv->lock, flags);
5048 ret = -EINVAL;
5049 goto out;
5050 }
5051
5052 #ifdef CONFIG_IWL4965_HT
5053 /* if we are switching from ht to 2.4 clear flags
5054 * from any ht related info since 2.4 does not
5055 * support ht */
5056 if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
5057 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
5058 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
5059 #endif
5060 )
5061 priv->staging_rxon.flags = 0;
5062 #endif /* CONFIG_IWL4965_HT */
5063
5064 iwl_set_rxon_channel(priv, conf->channel->band,
5065 ieee80211_frequency_to_channel(conf->channel->center_freq));
5066
5067 iwl4965_set_flags_for_phymode(priv, conf->channel->band);
5068
5069 /* The list of supported rates and rate mask can be different
5070 * for each band; since the band may have changed, reset
5071 * the rate mask to what mac80211 lists */
5072 iwl4965_set_rate(priv);
5073
5074 spin_unlock_irqrestore(&priv->lock, flags);
5075
5076 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
5077 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
5078 iwl4965_hw_channel_switch(priv, conf->channel);
5079 goto out;
5080 }
5081 #endif
5082
5083 if (priv->cfg->ops->lib->radio_kill_sw)
5084 priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled);
5085
5086 if (!conf->radio_enabled) {
5087 IWL_DEBUG_MAC80211("leave - radio disabled\n");
5088 goto out;
5089 }
5090
5091 if (iwl_is_rfkill(priv)) {
5092 IWL_DEBUG_MAC80211("leave - RF kill\n");
5093 ret = -EIO;
5094 goto out;
5095 }
5096
5097 iwl4965_set_rate(priv);
5098
5099 if (memcmp(&priv->active_rxon,
5100 &priv->staging_rxon, sizeof(priv->staging_rxon)))
5101 iwl4965_commit_rxon(priv);
5102 else
5103 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
5104
5105 IWL_DEBUG_MAC80211("leave\n");
5106
5107 out:
5108 clear_bit(STATUS_CONF_PENDING, &priv->status);
5109 mutex_unlock(&priv->mutex);
5110 return ret;
5111 }
5112
5113 static void iwl4965_config_ap(struct iwl_priv *priv)
5114 {
5115 int ret = 0;
5116
5117 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5118 return;
5119
5120 /* The following should be done only at AP bring up */
5121 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
5122
5123 /* RXON - unassoc (to set timing command) */
5124 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5125 iwl4965_commit_rxon(priv);
5126
5127 /* RXON Timing */
5128 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
5129 iwl4965_setup_rxon_timing(priv);
5130 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
5131 sizeof(priv->rxon_timing), &priv->rxon_timing);
5132 if (ret)
5133 IWL_WARNING("REPLY_RXON_TIMING failed - "
5134 "Attempting to continue.\n");
5135
5136 iwl_set_rxon_chain(priv);
5137
5138 /* FIXME: what should be the assoc_id for AP? */
5139 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
5140 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
5141 priv->staging_rxon.flags |=
5142 RXON_FLG_SHORT_PREAMBLE_MSK;
5143 else
5144 priv->staging_rxon.flags &=
5145 ~RXON_FLG_SHORT_PREAMBLE_MSK;
5146
5147 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
5148 if (priv->assoc_capability &
5149 WLAN_CAPABILITY_SHORT_SLOT_TIME)
5150 priv->staging_rxon.flags |=
5151 RXON_FLG_SHORT_SLOT_MSK;
5152 else
5153 priv->staging_rxon.flags &=
5154 ~RXON_FLG_SHORT_SLOT_MSK;
5155
5156 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
5157 priv->staging_rxon.flags &=
5158 ~RXON_FLG_SHORT_SLOT_MSK;
5159 }
5160 /* restore RXON assoc */
5161 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
5162 iwl4965_commit_rxon(priv);
5163 iwl4965_activate_qos(priv, 1);
5164 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
5165 }
5166 iwl4965_send_beacon_cmd(priv);
5167
5168 /* FIXME - we need to add code here to detect a totally new
5169 * configuration, reset the AP, unassoc, rxon timing, assoc,
5170 * clear sta table, add BCAST sta... */
5171 }
5172
5173 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
5174 struct ieee80211_vif *vif,
5175 struct ieee80211_if_conf *conf)
5176 {
5177 struct iwl_priv *priv = hw->priv;
5178 DECLARE_MAC_BUF(mac);
5179 unsigned long flags;
5180 int rc;
5181
5182 if (conf == NULL)
5183 return -EIO;
5184
5185 if (priv->vif != vif) {
5186 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
5187 return 0;
5188 }
5189
5190 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
5191 (!conf->beacon || !conf->ssid_len)) {
5192 IWL_DEBUG_MAC80211
5193 ("Leaving in AP mode because HostAPD is not ready.\n");
5194 return 0;
5195 }
5196
5197 if (!iwl_is_alive(priv))
5198 return -EAGAIN;
5199
5200 mutex_lock(&priv->mutex);
5201
5202 if (conf->bssid)
5203 IWL_DEBUG_MAC80211("bssid: %s\n",
5204 print_mac(mac, conf->bssid));
5205
5206 /*
5207 * very dubious code was here; the probe filtering flag is never set:
5208 *
5209 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
5210 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
5211 */
5212
5213 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
5214 if (!conf->bssid) {
5215 conf->bssid = priv->mac_addr;
5216 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
5217 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
5218 print_mac(mac, conf->bssid));
5219 }
5220 if (priv->ibss_beacon)
5221 dev_kfree_skb(priv->ibss_beacon);
5222
5223 priv->ibss_beacon = conf->beacon;
5224 }
5225
5226 if (iwl_is_rfkill(priv))
5227 goto done;
5228
5229 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
5230 !is_multicast_ether_addr(conf->bssid)) {
5231 /* If there is currently a HW scan going on in the background
5232 * then we need to cancel it else the RXON below will fail. */
5233 if (iwl4965_scan_cancel_timeout(priv, 100)) {
5234 IWL_WARNING("Aborted scan still in progress "
5235 "after 100ms\n");
5236 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
5237 mutex_unlock(&priv->mutex);
5238 return -EAGAIN;
5239 }
5240 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
5241
5242 /* TODO: Audit driver for usage of these members and see
5243 * if mac80211 deprecates them (priv->bssid looks like it
5244 * shouldn't be there, but I haven't scanned the IBSS code
5245 * to verify) - jpk */
5246 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
5247
5248 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
5249 iwl4965_config_ap(priv);
5250 else {
5251 rc = iwl4965_commit_rxon(priv);
5252 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
5253 iwl_rxon_add_station(
5254 priv, priv->active_rxon.bssid_addr, 1);
5255 }
5256
5257 } else {
5258 iwl4965_scan_cancel_timeout(priv, 100);
5259 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5260 iwl4965_commit_rxon(priv);
5261 }
5262
5263 done:
5264 spin_lock_irqsave(&priv->lock, flags);
5265 if (!conf->ssid_len)
5266 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
5267 else
5268 memcpy(priv->essid, conf->ssid, conf->ssid_len);
5269
5270 priv->essid_len = conf->ssid_len;
5271 spin_unlock_irqrestore(&priv->lock, flags);
5272
5273 IWL_DEBUG_MAC80211("leave\n");
5274 mutex_unlock(&priv->mutex);
5275
5276 return 0;
5277 }
5278
5279 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
5280 unsigned int changed_flags,
5281 unsigned int *total_flags,
5282 int mc_count, struct dev_addr_list *mc_list)
5283 {
5284 /*
5285 * XXX: dummy
5286 * see also iwl4965_connection_init_rx_config
5287 */
5288 struct iwl_priv *priv = hw->priv;
5289 int new_flags = 0;
5290 if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
5291 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
5292 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
5293 IEEE80211_IF_TYPE_MNTR,
5294 changed_flags, *total_flags);
5295 /* queue work 'cuz mac80211 is holding a lock which
5296 * prevents us from issuing (synchronous) f/w cmds */
5297 queue_work(priv->workqueue, &priv->set_monitor);
5298 new_flags &= FIF_PROMISC_IN_BSS |
5299 FIF_OTHER_BSS |
5300 FIF_ALLMULTI;
5301 }
5302 }
5303 *total_flags = new_flags;
5304 }
5305
5306 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
5307 struct ieee80211_if_init_conf *conf)
5308 {
5309 struct iwl_priv *priv = hw->priv;
5310
5311 IWL_DEBUG_MAC80211("enter\n");
5312
5313 mutex_lock(&priv->mutex);
5314
5315 if (iwl_is_ready_rf(priv)) {
5316 iwl4965_scan_cancel_timeout(priv, 100);
5317 cancel_delayed_work(&priv->post_associate);
5318 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5319 iwl4965_commit_rxon(priv);
5320 }
5321 if (priv->vif == conf->vif) {
5322 priv->vif = NULL;
5323 memset(priv->bssid, 0, ETH_ALEN);
5324 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
5325 priv->essid_len = 0;
5326 }
5327 mutex_unlock(&priv->mutex);
5328
5329 IWL_DEBUG_MAC80211("leave\n");
5330
5331 }
5332
5333 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
5334 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
5335 struct ieee80211_vif *vif,
5336 struct ieee80211_bss_conf *bss_conf,
5337 u32 changes)
5338 {
5339 struct iwl_priv *priv = hw->priv;
5340
5341 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
5342
5343 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
5344 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
5345 bss_conf->use_short_preamble);
5346 if (bss_conf->use_short_preamble)
5347 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
5348 else
5349 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
5350 }
5351
5352 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
5353 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
5354 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
5355 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
5356 else
5357 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
5358 }
5359
5360 if (changes & BSS_CHANGED_HT) {
5361 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
5362 iwl4965_ht_conf(priv, bss_conf);
5363 iwl_set_rxon_chain(priv);
5364 }
5365
5366 if (changes & BSS_CHANGED_ASSOC) {
5367 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
5368 /* This should never happen as this function should
5369 * never be called from interrupt context. */
5370 if (WARN_ON_ONCE(in_interrupt()))
5371 return;
5372 if (bss_conf->assoc) {
5373 priv->assoc_id = bss_conf->aid;
5374 priv->beacon_int = bss_conf->beacon_int;
5375 priv->timestamp = bss_conf->timestamp;
5376 priv->assoc_capability = bss_conf->assoc_capability;
5377 priv->next_scan_jiffies = jiffies +
5378 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
5379 mutex_lock(&priv->mutex);
5380 iwl4965_post_associate(priv);
5381 mutex_unlock(&priv->mutex);
5382 } else {
5383 priv->assoc_id = 0;
5384 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
5385 }
5386 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
5387 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
5388 iwl_send_rxon_assoc(priv);
5389 }
5390
5391 }
5392
5393 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
5394 {
5395 int rc = 0;
5396 unsigned long flags;
5397 struct iwl_priv *priv = hw->priv;
5398
5399 IWL_DEBUG_MAC80211("enter\n");
5400
5401 mutex_lock(&priv->mutex);
5402 spin_lock_irqsave(&priv->lock, flags);
5403
5404 if (!iwl_is_ready_rf(priv)) {
5405 rc = -EIO;
5406 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
5407 goto out_unlock;
5408 }
5409
5410 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
5411 rc = -EIO;
5412 IWL_ERROR("ERROR: APs don't scan\n");
5413 goto out_unlock;
5414 }
5415
5416 /* we don't schedule scan within next_scan_jiffies period */
5417 if (priv->next_scan_jiffies &&
5418 time_after(priv->next_scan_jiffies, jiffies)) {
5419 rc = -EAGAIN;
5420 goto out_unlock;
5421 }
5422 /* if we just finished scan ask for delay */
5423 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
5424 IWL_DELAY_NEXT_SCAN, jiffies)) {
5425 rc = -EAGAIN;
5426 goto out_unlock;
5427 }
5428 if (len) {
5429 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
5430 iwl4965_escape_essid(ssid, len), (int)len);
5431
5432 priv->one_direct_scan = 1;
5433 priv->direct_ssid_len = (u8)
5434 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
5435 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
5436 } else
5437 priv->one_direct_scan = 0;
5438
5439 rc = iwl4965_scan_initiate(priv);
5440
5441 IWL_DEBUG_MAC80211("leave\n");
5442
5443 out_unlock:
5444 spin_unlock_irqrestore(&priv->lock, flags);
5445 mutex_unlock(&priv->mutex);
5446
5447 return rc;
5448 }
5449
5450 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
5451 struct ieee80211_key_conf *keyconf, const u8 *addr,
5452 u32 iv32, u16 *phase1key)
5453 {
5454 struct iwl_priv *priv = hw->priv;
5455 u8 sta_id = IWL_INVALID_STATION;
5456 unsigned long flags;
5457 __le16 key_flags = 0;
5458 int i;
5459 DECLARE_MAC_BUF(mac);
5460
5461 IWL_DEBUG_MAC80211("enter\n");
5462
5463 sta_id = iwl_find_station(priv, addr);
5464 if (sta_id == IWL_INVALID_STATION) {
5465 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
5466 print_mac(mac, addr));
5467 return;
5468 }
5469
5470 iwl4965_scan_cancel_timeout(priv, 100);
5471
5472 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
5473 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
5474 key_flags &= ~STA_KEY_FLG_INVALID;
5475
5476 if (sta_id == priv->hw_params.bcast_sta_id)
5477 key_flags |= STA_KEY_MULTICAST_MSK;
5478
5479 spin_lock_irqsave(&priv->sta_lock, flags);
5480
5481 priv->stations[sta_id].sta.key.key_flags = key_flags;
5482 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
5483
5484 for (i = 0; i < 5; i++)
5485 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
5486 cpu_to_le16(phase1key[i]);
5487
5488 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
5489 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
5490
5491 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
5492
5493 spin_unlock_irqrestore(&priv->sta_lock, flags);
5494
5495 IWL_DEBUG_MAC80211("leave\n");
5496 }
5497
5498 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
5499 const u8 *local_addr, const u8 *addr,
5500 struct ieee80211_key_conf *key)
5501 {
5502 struct iwl_priv *priv = hw->priv;
5503 DECLARE_MAC_BUF(mac);
5504 int ret = 0;
5505 u8 sta_id = IWL_INVALID_STATION;
5506 u8 is_default_wep_key = 0;
5507
5508 IWL_DEBUG_MAC80211("enter\n");
5509
5510 if (priv->hw_params.sw_crypto) {
5511 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
5512 return -EOPNOTSUPP;
5513 }
5514
5515 if (is_zero_ether_addr(addr))
5516 /* only support pairwise keys */
5517 return -EOPNOTSUPP;
5518
5519 sta_id = iwl_find_station(priv, addr);
5520 if (sta_id == IWL_INVALID_STATION) {
5521 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
5522 print_mac(mac, addr));
5523 return -EINVAL;
5524
5525 }
5526
5527 mutex_lock(&priv->mutex);
5528 iwl4965_scan_cancel_timeout(priv, 100);
5529 mutex_unlock(&priv->mutex);
5530
5531 /* If we are getting WEP group key and we didn't receive any key mapping
5532 * so far, we are in legacy wep mode (group key only), otherwise we are
5533 * in 1X mode.
5534 * In legacy wep mode, we use another host command to the uCode */
5535 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
5536 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
5537 if (cmd == SET_KEY)
5538 is_default_wep_key = !priv->key_mapping_key;
5539 else
5540 is_default_wep_key = priv->default_wep_key;
5541 }
5542
5543 switch (cmd) {
5544 case SET_KEY:
5545 if (is_default_wep_key)
5546 ret = iwl_set_default_wep_key(priv, key);
5547 else
5548 ret = iwl_set_dynamic_key(priv, key, sta_id);
5549
5550 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
5551 break;
5552 case DISABLE_KEY:
5553 if (is_default_wep_key)
5554 ret = iwl_remove_default_wep_key(priv, key);
5555 else
5556 ret = iwl_remove_dynamic_key(priv, key, sta_id);
5557
5558 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
5559 break;
5560 default:
5561 ret = -EINVAL;
5562 }
5563
5564 IWL_DEBUG_MAC80211("leave\n");
5565
5566 return ret;
5567 }
5568
5569 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
5570 const struct ieee80211_tx_queue_params *params)
5571 {
5572 struct iwl_priv *priv = hw->priv;
5573 unsigned long flags;
5574 int q;
5575
5576 IWL_DEBUG_MAC80211("enter\n");
5577
5578 if (!iwl_is_ready_rf(priv)) {
5579 IWL_DEBUG_MAC80211("leave - RF not ready\n");
5580 return -EIO;
5581 }
5582
5583 if (queue >= AC_NUM) {
5584 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
5585 return 0;
5586 }
5587
5588 if (!priv->qos_data.qos_enable) {
5589 priv->qos_data.qos_active = 0;
5590 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
5591 return 0;
5592 }
5593 q = AC_NUM - 1 - queue;
5594
5595 spin_lock_irqsave(&priv->lock, flags);
5596
5597 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
5598 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
5599 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
5600 priv->qos_data.def_qos_parm.ac[q].edca_txop =
5601 cpu_to_le16((params->txop * 32));
5602
5603 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
5604 priv->qos_data.qos_active = 1;
5605
5606 spin_unlock_irqrestore(&priv->lock, flags);
5607
5608 mutex_lock(&priv->mutex);
5609 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
5610 iwl4965_activate_qos(priv, 1);
5611 else if (priv->assoc_id && iwl_is_associated(priv))
5612 iwl4965_activate_qos(priv, 0);
5613
5614 mutex_unlock(&priv->mutex);
5615
5616 IWL_DEBUG_MAC80211("leave\n");
5617 return 0;
5618 }
5619
5620 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
5621 struct ieee80211_tx_queue_stats *stats)
5622 {
5623 struct iwl_priv *priv = hw->priv;
5624 int i, avail;
5625 struct iwl_tx_queue *txq;
5626 struct iwl_queue *q;
5627 unsigned long flags;
5628
5629 IWL_DEBUG_MAC80211("enter\n");
5630
5631 if (!iwl_is_ready_rf(priv)) {
5632 IWL_DEBUG_MAC80211("leave - RF not ready\n");
5633 return -EIO;
5634 }
5635
5636 spin_lock_irqsave(&priv->lock, flags);
5637
5638 for (i = 0; i < AC_NUM; i++) {
5639 txq = &priv->txq[i];
5640 q = &txq->q;
5641 avail = iwl_queue_space(q);
5642
5643 stats[i].len = q->n_window - avail;
5644 stats[i].limit = q->n_window - q->high_mark;
5645 stats[i].count = q->n_window;
5646
5647 }
5648 spin_unlock_irqrestore(&priv->lock, flags);
5649
5650 IWL_DEBUG_MAC80211("leave\n");
5651
5652 return 0;
5653 }
5654
5655 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
5656 struct ieee80211_low_level_stats *stats)
5657 {
5658 struct iwl_priv *priv = hw->priv;
5659
5660 priv = hw->priv;
5661 IWL_DEBUG_MAC80211("enter\n");
5662 IWL_DEBUG_MAC80211("leave\n");
5663
5664 return 0;
5665 }
5666
5667 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
5668 {
5669 struct iwl_priv *priv;
5670
5671 priv = hw->priv;
5672 IWL_DEBUG_MAC80211("enter\n");
5673 IWL_DEBUG_MAC80211("leave\n");
5674
5675 return 0;
5676 }
5677
5678 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
5679 {
5680 struct iwl_priv *priv = hw->priv;
5681 unsigned long flags;
5682
5683 mutex_lock(&priv->mutex);
5684 IWL_DEBUG_MAC80211("enter\n");
5685
5686 priv->lq_mngr.lq_ready = 0;
5687 #ifdef CONFIG_IWL4965_HT
5688 spin_lock_irqsave(&priv->lock, flags);
5689 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
5690 spin_unlock_irqrestore(&priv->lock, flags);
5691 #endif /* CONFIG_IWL4965_HT */
5692
5693 iwl_reset_qos(priv);
5694
5695 cancel_delayed_work(&priv->post_associate);
5696
5697 spin_lock_irqsave(&priv->lock, flags);
5698 priv->assoc_id = 0;
5699 priv->assoc_capability = 0;
5700 priv->assoc_station_added = 0;
5701
5702 /* new association get rid of ibss beacon skb */
5703 if (priv->ibss_beacon)
5704 dev_kfree_skb(priv->ibss_beacon);
5705
5706 priv->ibss_beacon = NULL;
5707
5708 priv->beacon_int = priv->hw->conf.beacon_int;
5709 priv->timestamp = 0;
5710 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
5711 priv->beacon_int = 0;
5712
5713 spin_unlock_irqrestore(&priv->lock, flags);
5714
5715 if (!iwl_is_ready_rf(priv)) {
5716 IWL_DEBUG_MAC80211("leave - not ready\n");
5717 mutex_unlock(&priv->mutex);
5718 return;
5719 }
5720
5721 /* we are restarting association process
5722 * clear RXON_FILTER_ASSOC_MSK bit
5723 */
5724 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
5725 iwl4965_scan_cancel_timeout(priv, 100);
5726 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5727 iwl4965_commit_rxon(priv);
5728 }
5729
5730 iwl_power_update_mode(priv, 0);
5731
5732 /* Per mac80211.h: This is only used in IBSS mode... */
5733 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
5734
5735 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
5736 mutex_unlock(&priv->mutex);
5737 return;
5738 }
5739
5740 iwl4965_set_rate(priv);
5741
5742 mutex_unlock(&priv->mutex);
5743
5744 IWL_DEBUG_MAC80211("leave\n");
5745 }
5746
5747 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
5748 struct ieee80211_tx_control *control)
5749 {
5750 struct iwl_priv *priv = hw->priv;
5751 unsigned long flags;
5752
5753 mutex_lock(&priv->mutex);
5754 IWL_DEBUG_MAC80211("enter\n");
5755
5756 if (!iwl_is_ready_rf(priv)) {
5757 IWL_DEBUG_MAC80211("leave - RF not ready\n");
5758 mutex_unlock(&priv->mutex);
5759 return -EIO;
5760 }
5761
5762 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
5763 IWL_DEBUG_MAC80211("leave - not IBSS\n");
5764 mutex_unlock(&priv->mutex);
5765 return -EIO;
5766 }
5767
5768 spin_lock_irqsave(&priv->lock, flags);
5769
5770 if (priv->ibss_beacon)
5771 dev_kfree_skb(priv->ibss_beacon);
5772
5773 priv->ibss_beacon = skb;
5774
5775 priv->assoc_id = 0;
5776
5777 IWL_DEBUG_MAC80211("leave\n");
5778 spin_unlock_irqrestore(&priv->lock, flags);
5779
5780 iwl_reset_qos(priv);
5781
5782 queue_work(priv->workqueue, &priv->post_associate.work);
5783
5784 mutex_unlock(&priv->mutex);
5785
5786 return 0;
5787 }
5788
5789 /*****************************************************************************
5790 *
5791 * sysfs attributes
5792 *
5793 *****************************************************************************/
5794
5795 #ifdef CONFIG_IWLWIFI_DEBUG
5796
5797 /*
5798 * The following adds a new attribute to the sysfs representation
5799 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
5800 * used for controlling the debug level.
5801 *
5802 * See the level definitions in iwl for details.
5803 */
5804
5805 static ssize_t show_debug_level(struct device *d,
5806 struct device_attribute *attr, char *buf)
5807 {
5808 struct iwl_priv *priv = d->driver_data;
5809
5810 return sprintf(buf, "0x%08X\n", priv->debug_level);
5811 }
5812 static ssize_t store_debug_level(struct device *d,
5813 struct device_attribute *attr,
5814 const char *buf, size_t count)
5815 {
5816 struct iwl_priv *priv = d->driver_data;
5817 char *p = (char *)buf;
5818 u32 val;
5819
5820 val = simple_strtoul(p, &p, 0);
5821 if (p == buf)
5822 printk(KERN_INFO DRV_NAME
5823 ": %s is not in hex or decimal form.\n", buf);
5824 else
5825 priv->debug_level = val;
5826
5827 return strnlen(buf, count);
5828 }
5829
5830 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
5831 show_debug_level, store_debug_level);
5832
5833
5834 #endif /* CONFIG_IWLWIFI_DEBUG */
5835
5836
5837 static ssize_t show_version(struct device *d,
5838 struct device_attribute *attr, char *buf)
5839 {
5840 struct iwl_priv *priv = d->driver_data;
5841 struct iwl4965_alive_resp *palive = &priv->card_alive;
5842
5843 if (palive->is_valid)
5844 return sprintf(buf, "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
5845 "fw type: 0x%01X 0x%01X\n",
5846 palive->ucode_major, palive->ucode_minor,
5847 palive->sw_rev[0], palive->sw_rev[1],
5848 palive->ver_type, palive->ver_subtype);
5849
5850 else
5851 return sprintf(buf, "fw not loaded\n");
5852 }
5853
5854 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
5855
5856 static ssize_t show_temperature(struct device *d,
5857 struct device_attribute *attr, char *buf)
5858 {
5859 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5860
5861 if (!iwl_is_alive(priv))
5862 return -EAGAIN;
5863
5864 return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
5865 }
5866
5867 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
5868
5869 static ssize_t show_rs_window(struct device *d,
5870 struct device_attribute *attr,
5871 char *buf)
5872 {
5873 struct iwl_priv *priv = d->driver_data;
5874 return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
5875 }
5876 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
5877
5878 static ssize_t show_tx_power(struct device *d,
5879 struct device_attribute *attr, char *buf)
5880 {
5881 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5882 return sprintf(buf, "%d\n", priv->user_txpower_limit);
5883 }
5884
5885 static ssize_t store_tx_power(struct device *d,
5886 struct device_attribute *attr,
5887 const char *buf, size_t count)
5888 {
5889 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5890 char *p = (char *)buf;
5891 u32 val;
5892
5893 val = simple_strtoul(p, &p, 10);
5894 if (p == buf)
5895 printk(KERN_INFO DRV_NAME
5896 ": %s is not in decimal form.\n", buf);
5897 else
5898 iwl4965_hw_reg_set_txpower(priv, val);
5899
5900 return count;
5901 }
5902
5903 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
5904
5905 static ssize_t show_flags(struct device *d,
5906 struct device_attribute *attr, char *buf)
5907 {
5908 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5909
5910 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
5911 }
5912
5913 static ssize_t store_flags(struct device *d,
5914 struct device_attribute *attr,
5915 const char *buf, size_t count)
5916 {
5917 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5918 u32 flags = simple_strtoul(buf, NULL, 0);
5919
5920 mutex_lock(&priv->mutex);
5921 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
5922 /* Cancel any currently running scans... */
5923 if (iwl4965_scan_cancel_timeout(priv, 100))
5924 IWL_WARNING("Could not cancel scan.\n");
5925 else {
5926 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
5927 flags);
5928 priv->staging_rxon.flags = cpu_to_le32(flags);
5929 iwl4965_commit_rxon(priv);
5930 }
5931 }
5932 mutex_unlock(&priv->mutex);
5933
5934 return count;
5935 }
5936
5937 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
5938
5939 static ssize_t show_filter_flags(struct device *d,
5940 struct device_attribute *attr, char *buf)
5941 {
5942 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5943
5944 return sprintf(buf, "0x%04X\n",
5945 le32_to_cpu(priv->active_rxon.filter_flags));
5946 }
5947
5948 static ssize_t store_filter_flags(struct device *d,
5949 struct device_attribute *attr,
5950 const char *buf, size_t count)
5951 {
5952 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5953 u32 filter_flags = simple_strtoul(buf, NULL, 0);
5954
5955 mutex_lock(&priv->mutex);
5956 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
5957 /* Cancel any currently running scans... */
5958 if (iwl4965_scan_cancel_timeout(priv, 100))
5959 IWL_WARNING("Could not cancel scan.\n");
5960 else {
5961 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
5962 "0x%04X\n", filter_flags);
5963 priv->staging_rxon.filter_flags =
5964 cpu_to_le32(filter_flags);
5965 iwl4965_commit_rxon(priv);
5966 }
5967 }
5968 mutex_unlock(&priv->mutex);
5969
5970 return count;
5971 }
5972
5973 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
5974 store_filter_flags);
5975
5976 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
5977
5978 static ssize_t show_measurement(struct device *d,
5979 struct device_attribute *attr, char *buf)
5980 {
5981 struct iwl_priv *priv = dev_get_drvdata(d);
5982 struct iwl4965_spectrum_notification measure_report;
5983 u32 size = sizeof(measure_report), len = 0, ofs = 0;
5984 u8 *data = (u8 *) & measure_report;
5985 unsigned long flags;
5986
5987 spin_lock_irqsave(&priv->lock, flags);
5988 if (!(priv->measurement_status & MEASUREMENT_READY)) {
5989 spin_unlock_irqrestore(&priv->lock, flags);
5990 return 0;
5991 }
5992 memcpy(&measure_report, &priv->measure_report, size);
5993 priv->measurement_status = 0;
5994 spin_unlock_irqrestore(&priv->lock, flags);
5995
5996 while (size && (PAGE_SIZE - len)) {
5997 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
5998 PAGE_SIZE - len, 1);
5999 len = strlen(buf);
6000 if (PAGE_SIZE - len)
6001 buf[len++] = '\n';
6002
6003 ofs += 16;
6004 size -= min(size, 16U);
6005 }
6006
6007 return len;
6008 }
6009
6010 static ssize_t store_measurement(struct device *d,
6011 struct device_attribute *attr,
6012 const char *buf, size_t count)
6013 {
6014 struct iwl_priv *priv = dev_get_drvdata(d);
6015 struct ieee80211_measurement_params params = {
6016 .channel = le16_to_cpu(priv->active_rxon.channel),
6017 .start_time = cpu_to_le64(priv->last_tsf),
6018 .duration = cpu_to_le16(1),
6019 };
6020 u8 type = IWL_MEASURE_BASIC;
6021 u8 buffer[32];
6022 u8 channel;
6023
6024 if (count) {
6025 char *p = buffer;
6026 strncpy(buffer, buf, min(sizeof(buffer), count));
6027 channel = simple_strtoul(p, NULL, 0);
6028 if (channel)
6029 params.channel = channel;
6030
6031 p = buffer;
6032 while (*p && *p != ' ')
6033 p++;
6034 if (*p)
6035 type = simple_strtoul(p + 1, NULL, 0);
6036 }
6037
6038 IWL_DEBUG_INFO("Invoking measurement of type %d on "
6039 "channel %d (for '%s')\n", type, params.channel, buf);
6040 iwl4965_get_measurement(priv, &params, type);
6041
6042 return count;
6043 }
6044
6045 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
6046 show_measurement, store_measurement);
6047 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
6048
6049 static ssize_t store_retry_rate(struct device *d,
6050 struct device_attribute *attr,
6051 const char *buf, size_t count)
6052 {
6053 struct iwl_priv *priv = dev_get_drvdata(d);
6054
6055 priv->retry_rate = simple_strtoul(buf, NULL, 0);
6056 if (priv->retry_rate <= 0)
6057 priv->retry_rate = 1;
6058
6059 return count;
6060 }
6061
6062 static ssize_t show_retry_rate(struct device *d,
6063 struct device_attribute *attr, char *buf)
6064 {
6065 struct iwl_priv *priv = dev_get_drvdata(d);
6066 return sprintf(buf, "%d", priv->retry_rate);
6067 }
6068
6069 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
6070 store_retry_rate);
6071
6072 static ssize_t store_power_level(struct device *d,
6073 struct device_attribute *attr,
6074 const char *buf, size_t count)
6075 {
6076 struct iwl_priv *priv = dev_get_drvdata(d);
6077 int rc;
6078 int mode;
6079
6080 mode = simple_strtoul(buf, NULL, 0);
6081 mutex_lock(&priv->mutex);
6082
6083 if (!iwl_is_ready(priv)) {
6084 rc = -EAGAIN;
6085 goto out;
6086 }
6087
6088 rc = iwl_power_set_user_mode(priv, mode);
6089 if (rc) {
6090 IWL_DEBUG_MAC80211("failed setting power mode.\n");
6091 goto out;
6092 }
6093 rc = count;
6094
6095 out:
6096 mutex_unlock(&priv->mutex);
6097 return rc;
6098 }
6099
6100 #define MAX_WX_STRING 80
6101
6102 /* Values are in microsecond */
6103 static const s32 timeout_duration[] = {
6104 350000,
6105 250000,
6106 75000,
6107 37000,
6108 25000,
6109 };
6110 static const s32 period_duration[] = {
6111 400000,
6112 700000,
6113 1000000,
6114 1000000,
6115 1000000
6116 };
6117
6118 static ssize_t show_power_level(struct device *d,
6119 struct device_attribute *attr, char *buf)
6120 {
6121 struct iwl_priv *priv = dev_get_drvdata(d);
6122 int level = priv->power_data.power_mode;
6123 char *p = buf;
6124
6125 p += sprintf(p, "%d ", level);
6126 switch (level) {
6127 case IWL_POWER_MODE_CAM:
6128 case IWL_POWER_AC:
6129 p += sprintf(p, "(AC)");
6130 break;
6131 case IWL_POWER_BATTERY:
6132 p += sprintf(p, "(BATTERY)");
6133 break;
6134 default:
6135 p += sprintf(p,
6136 "(Timeout %dms, Period %dms)",
6137 timeout_duration[level - 1] / 1000,
6138 period_duration[level - 1] / 1000);
6139 }
6140 /*
6141 if (!(priv->power_mode & IWL_POWER_ENABLED))
6142 p += sprintf(p, " OFF\n");
6143 else
6144 p += sprintf(p, " \n");
6145 */
6146 p += sprintf(p, " \n");
6147 return (p - buf + 1);
6148 }
6149
6150 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
6151 store_power_level);
6152
6153 static ssize_t show_channels(struct device *d,
6154 struct device_attribute *attr, char *buf)
6155 {
6156 /* all this shit doesn't belong into sysfs anyway */
6157 return 0;
6158 }
6159
6160 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
6161
6162 static ssize_t show_statistics(struct device *d,
6163 struct device_attribute *attr, char *buf)
6164 {
6165 struct iwl_priv *priv = dev_get_drvdata(d);
6166 u32 size = sizeof(struct iwl4965_notif_statistics);
6167 u32 len = 0, ofs = 0;
6168 u8 *data = (u8 *) & priv->statistics;
6169 int rc = 0;
6170
6171 if (!iwl_is_alive(priv))
6172 return -EAGAIN;
6173
6174 mutex_lock(&priv->mutex);
6175 rc = iwl_send_statistics_request(priv, 0);
6176 mutex_unlock(&priv->mutex);
6177
6178 if (rc) {
6179 len = sprintf(buf,
6180 "Error sending statistics request: 0x%08X\n", rc);
6181 return len;
6182 }
6183
6184 while (size && (PAGE_SIZE - len)) {
6185 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
6186 PAGE_SIZE - len, 1);
6187 len = strlen(buf);
6188 if (PAGE_SIZE - len)
6189 buf[len++] = '\n';
6190
6191 ofs += 16;
6192 size -= min(size, 16U);
6193 }
6194
6195 return len;
6196 }
6197
6198 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
6199
6200 static ssize_t show_status(struct device *d,
6201 struct device_attribute *attr, char *buf)
6202 {
6203 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6204 if (!iwl_is_alive(priv))
6205 return -EAGAIN;
6206 return sprintf(buf, "0x%08x\n", (int)priv->status);
6207 }
6208
6209 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
6210
6211 static ssize_t dump_error_log(struct device *d,
6212 struct device_attribute *attr,
6213 const char *buf, size_t count)
6214 {
6215 char *p = (char *)buf;
6216
6217 if (p[0] == '1')
6218 iwl4965_dump_nic_error_log((struct iwl_priv *)d->driver_data);
6219
6220 return strnlen(buf, count);
6221 }
6222
6223 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
6224
6225 static ssize_t dump_event_log(struct device *d,
6226 struct device_attribute *attr,
6227 const char *buf, size_t count)
6228 {
6229 char *p = (char *)buf;
6230
6231 if (p[0] == '1')
6232 iwl4965_dump_nic_event_log((struct iwl_priv *)d->driver_data);
6233
6234 return strnlen(buf, count);
6235 }
6236
6237 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
6238
6239 /*****************************************************************************
6240 *
6241 * driver setup and teardown
6242 *
6243 *****************************************************************************/
6244
6245 static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
6246 {
6247 priv->workqueue = create_workqueue(DRV_NAME);
6248
6249 init_waitqueue_head(&priv->wait_command_queue);
6250
6251 INIT_WORK(&priv->up, iwl4965_bg_up);
6252 INIT_WORK(&priv->restart, iwl4965_bg_restart);
6253 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
6254 INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
6255 INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
6256 INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
6257 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
6258 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
6259 INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
6260 INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
6261 INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
6262 INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
6263 INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
6264
6265 iwl4965_hw_setup_deferred_work(priv);
6266
6267 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
6268 iwl4965_irq_tasklet, (unsigned long)priv);
6269 }
6270
6271 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
6272 {
6273 iwl4965_hw_cancel_deferred_work(priv);
6274
6275 cancel_delayed_work_sync(&priv->init_alive_start);
6276 cancel_delayed_work(&priv->scan_check);
6277 cancel_delayed_work(&priv->alive_start);
6278 cancel_delayed_work(&priv->post_associate);
6279 cancel_work_sync(&priv->beacon_update);
6280 }
6281
6282 static struct attribute *iwl4965_sysfs_entries[] = {
6283 &dev_attr_channels.attr,
6284 &dev_attr_dump_errors.attr,
6285 &dev_attr_dump_events.attr,
6286 &dev_attr_flags.attr,
6287 &dev_attr_filter_flags.attr,
6288 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
6289 &dev_attr_measurement.attr,
6290 #endif
6291 &dev_attr_power_level.attr,
6292 &dev_attr_retry_rate.attr,
6293 &dev_attr_rs_window.attr,
6294 &dev_attr_statistics.attr,
6295 &dev_attr_status.attr,
6296 &dev_attr_temperature.attr,
6297 &dev_attr_tx_power.attr,
6298 #ifdef CONFIG_IWLWIFI_DEBUG
6299 &dev_attr_debug_level.attr,
6300 #endif
6301 &dev_attr_version.attr,
6302
6303 NULL
6304 };
6305
6306 static struct attribute_group iwl4965_attribute_group = {
6307 .name = NULL, /* put in device directory */
6308 .attrs = iwl4965_sysfs_entries,
6309 };
6310
6311 static struct ieee80211_ops iwl4965_hw_ops = {
6312 .tx = iwl4965_mac_tx,
6313 .start = iwl4965_mac_start,
6314 .stop = iwl4965_mac_stop,
6315 .add_interface = iwl4965_mac_add_interface,
6316 .remove_interface = iwl4965_mac_remove_interface,
6317 .config = iwl4965_mac_config,
6318 .config_interface = iwl4965_mac_config_interface,
6319 .configure_filter = iwl4965_configure_filter,
6320 .set_key = iwl4965_mac_set_key,
6321 .update_tkip_key = iwl4965_mac_update_tkip_key,
6322 .get_stats = iwl4965_mac_get_stats,
6323 .get_tx_stats = iwl4965_mac_get_tx_stats,
6324 .conf_tx = iwl4965_mac_conf_tx,
6325 .get_tsf = iwl4965_mac_get_tsf,
6326 .reset_tsf = iwl4965_mac_reset_tsf,
6327 .beacon_update = iwl4965_mac_beacon_update,
6328 .bss_info_changed = iwl4965_bss_info_changed,
6329 #ifdef CONFIG_IWL4965_HT
6330 .ampdu_action = iwl4965_mac_ampdu_action,
6331 #endif /* CONFIG_IWL4965_HT */
6332 .hw_scan = iwl4965_mac_hw_scan
6333 };
6334
6335 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
6336 {
6337 int err = 0;
6338 struct iwl_priv *priv;
6339 struct ieee80211_hw *hw;
6340 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
6341 unsigned long flags;
6342 DECLARE_MAC_BUF(mac);
6343
6344 /************************
6345 * 1. Allocating HW data
6346 ************************/
6347
6348 /* Disabling hardware scan means that mac80211 will perform scans
6349 * "the hard way", rather than using device's scan. */
6350 if (cfg->mod_params->disable_hw_scan) {
6351 if (cfg->mod_params->debug & IWL_DL_INFO)
6352 dev_printk(KERN_DEBUG, &(pdev->dev),
6353 "Disabling hw_scan\n");
6354 iwl4965_hw_ops.hw_scan = NULL;
6355 }
6356
6357 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
6358 if (!hw) {
6359 err = -ENOMEM;
6360 goto out;
6361 }
6362 priv = hw->priv;
6363 /* At this point both hw and priv are allocated. */
6364
6365 SET_IEEE80211_DEV(hw, &pdev->dev);
6366
6367 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
6368 priv->cfg = cfg;
6369 priv->pci_dev = pdev;
6370
6371 #ifdef CONFIG_IWLWIFI_DEBUG
6372 priv->debug_level = priv->cfg->mod_params->debug;
6373 atomic_set(&priv->restrict_refcnt, 0);
6374 #endif
6375
6376 /**************************
6377 * 2. Initializing PCI bus
6378 **************************/
6379 if (pci_enable_device(pdev)) {
6380 err = -ENODEV;
6381 goto out_ieee80211_free_hw;
6382 }
6383
6384 pci_set_master(pdev);
6385
6386 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
6387 if (!err)
6388 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
6389 if (err) {
6390 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
6391 if (!err)
6392 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
6393 /* both attempts failed: */
6394 if (err) {
6395 printk(KERN_WARNING "%s: No suitable DMA available.\n",
6396 DRV_NAME);
6397 goto out_pci_disable_device;
6398 }
6399 }
6400
6401 err = pci_request_regions(pdev, DRV_NAME);
6402 if (err)
6403 goto out_pci_disable_device;
6404
6405 pci_set_drvdata(pdev, priv);
6406
6407 /* We disable the RETRY_TIMEOUT register (0x41) to keep
6408 * PCI Tx retries from interfering with C3 CPU state */
6409 pci_write_config_byte(pdev, 0x41, 0x00);
6410
6411 /***********************
6412 * 3. Read REV register
6413 ***********************/
6414 priv->hw_base = pci_iomap(pdev, 0, 0);
6415 if (!priv->hw_base) {
6416 err = -ENODEV;
6417 goto out_pci_release_regions;
6418 }
6419
6420 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
6421 (unsigned long long) pci_resource_len(pdev, 0));
6422 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
6423
6424 iwl_hw_detect(priv);
6425 printk(KERN_INFO DRV_NAME
6426 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
6427 priv->cfg->name, priv->hw_rev);
6428
6429 /* amp init */
6430 err = priv->cfg->ops->lib->apm_ops.init(priv);
6431 if (err < 0) {
6432 IWL_DEBUG_INFO("Failed to init APMG\n");
6433 goto out_iounmap;
6434 }
6435 /*****************
6436 * 4. Read EEPROM
6437 *****************/
6438 /* Read the EEPROM */
6439 err = iwl_eeprom_init(priv);
6440 if (err) {
6441 IWL_ERROR("Unable to init EEPROM\n");
6442 goto out_iounmap;
6443 }
6444 err = iwl_eeprom_check_version(priv);
6445 if (err)
6446 goto out_iounmap;
6447
6448 /* extract MAC Address */
6449 iwl_eeprom_get_mac(priv, priv->mac_addr);
6450 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
6451 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
6452
6453 /************************
6454 * 5. Setup HW constants
6455 ************************/
6456 /* Device-specific setup */
6457 if (priv->cfg->ops->lib->set_hw_params(priv)) {
6458 IWL_ERROR("failed to set hw parameters\n");
6459 goto out_free_eeprom;
6460 }
6461
6462 /*******************
6463 * 6. Setup hw/priv
6464 *******************/
6465
6466 err = iwl_setup(priv);
6467 if (err)
6468 goto out_free_eeprom;
6469 /* At this point both hw and priv are initialized. */
6470
6471 /**********************************
6472 * 7. Initialize module parameters
6473 **********************************/
6474
6475 /* Disable radio (SW RF KILL) via parameter when loading driver */
6476 if (priv->cfg->mod_params->disable) {
6477 set_bit(STATUS_RF_KILL_SW, &priv->status);
6478 IWL_DEBUG_INFO("Radio disabled.\n");
6479 }
6480
6481 if (priv->cfg->mod_params->enable_qos)
6482 priv->qos_data.qos_enable = 1;
6483
6484 /********************
6485 * 8. Setup services
6486 ********************/
6487 spin_lock_irqsave(&priv->lock, flags);
6488 iwl4965_disable_interrupts(priv);
6489 spin_unlock_irqrestore(&priv->lock, flags);
6490
6491 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
6492 if (err) {
6493 IWL_ERROR("failed to create sysfs device attributes\n");
6494 goto out_free_eeprom;
6495 }
6496
6497 err = iwl_dbgfs_register(priv, DRV_NAME);
6498 if (err) {
6499 IWL_ERROR("failed to create debugfs files\n");
6500 goto out_remove_sysfs;
6501 }
6502
6503 iwl4965_setup_deferred_work(priv);
6504 iwl4965_setup_rx_handlers(priv);
6505
6506 /********************
6507 * 9. Conclude
6508 ********************/
6509 pci_save_state(pdev);
6510 pci_disable_device(pdev);
6511
6512 /* notify iwlcore to init */
6513 iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
6514 return 0;
6515
6516 out_remove_sysfs:
6517 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
6518 out_free_eeprom:
6519 iwl_eeprom_free(priv);
6520 out_iounmap:
6521 pci_iounmap(pdev, priv->hw_base);
6522 out_pci_release_regions:
6523 pci_release_regions(pdev);
6524 pci_set_drvdata(pdev, NULL);
6525 out_pci_disable_device:
6526 pci_disable_device(pdev);
6527 out_ieee80211_free_hw:
6528 ieee80211_free_hw(priv->hw);
6529 out:
6530 return err;
6531 }
6532
6533 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
6534 {
6535 struct iwl_priv *priv = pci_get_drvdata(pdev);
6536 struct list_head *p, *q;
6537 int i;
6538 unsigned long flags;
6539
6540 if (!priv)
6541 return;
6542
6543 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
6544
6545 if (priv->mac80211_registered) {
6546 ieee80211_unregister_hw(priv->hw);
6547 priv->mac80211_registered = 0;
6548 }
6549
6550 set_bit(STATUS_EXIT_PENDING, &priv->status);
6551
6552 iwl4965_down(priv);
6553
6554 /* make sure we flush any pending irq or
6555 * tasklet for the driver
6556 */
6557 spin_lock_irqsave(&priv->lock, flags);
6558 iwl4965_disable_interrupts(priv);
6559 spin_unlock_irqrestore(&priv->lock, flags);
6560
6561 iwl_synchronize_irq(priv);
6562
6563 /* Free MAC hash list for ADHOC */
6564 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
6565 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
6566 list_del(p);
6567 kfree(list_entry(p, struct iwl4965_ibss_seq, list));
6568 }
6569 }
6570
6571 iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT);
6572 iwl_dbgfs_unregister(priv);
6573 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
6574
6575 iwl4965_dealloc_ucode_pci(priv);
6576
6577 if (priv->rxq.bd)
6578 iwl_rx_queue_free(priv, &priv->rxq);
6579 iwl_hw_txq_ctx_free(priv);
6580
6581 iwlcore_clear_stations_table(priv);
6582 iwl_eeprom_free(priv);
6583
6584
6585 /*netif_stop_queue(dev); */
6586 flush_workqueue(priv->workqueue);
6587
6588 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
6589 * priv->workqueue... so we can't take down the workqueue
6590 * until now... */
6591 destroy_workqueue(priv->workqueue);
6592 priv->workqueue = NULL;
6593
6594 pci_iounmap(pdev, priv->hw_base);
6595 pci_release_regions(pdev);
6596 pci_disable_device(pdev);
6597 pci_set_drvdata(pdev, NULL);
6598
6599 iwl_free_channel_map(priv);
6600 iwlcore_free_geos(priv);
6601
6602 if (priv->ibss_beacon)
6603 dev_kfree_skb(priv->ibss_beacon);
6604
6605 ieee80211_free_hw(priv->hw);
6606 }
6607
6608 #ifdef CONFIG_PM
6609
6610 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
6611 {
6612 struct iwl_priv *priv = pci_get_drvdata(pdev);
6613
6614 if (priv->is_open) {
6615 set_bit(STATUS_IN_SUSPEND, &priv->status);
6616 iwl4965_mac_stop(priv->hw);
6617 priv->is_open = 1;
6618 }
6619
6620 pci_set_power_state(pdev, PCI_D3hot);
6621
6622 return 0;
6623 }
6624
6625 static int iwl4965_pci_resume(struct pci_dev *pdev)
6626 {
6627 struct iwl_priv *priv = pci_get_drvdata(pdev);
6628
6629 pci_set_power_state(pdev, PCI_D0);
6630
6631 if (priv->is_open)
6632 iwl4965_mac_start(priv->hw);
6633
6634 clear_bit(STATUS_IN_SUSPEND, &priv->status);
6635 return 0;
6636 }
6637
6638 #endif /* CONFIG_PM */
6639
6640 /*****************************************************************************
6641 *
6642 * driver and module entry point
6643 *
6644 *****************************************************************************/
6645
6646 /* Hardware specific file defines the PCI IDs table for that hardware module */
6647 static struct pci_device_id iwl_hw_card_ids[] = {
6648 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
6649 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
6650 #ifdef CONFIG_IWL5000
6651 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
6652 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
6653 {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
6654 #endif /* CONFIG_IWL5000 */
6655 {0}
6656 };
6657 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
6658
6659 static struct pci_driver iwl_driver = {
6660 .name = DRV_NAME,
6661 .id_table = iwl_hw_card_ids,
6662 .probe = iwl4965_pci_probe,
6663 .remove = __devexit_p(iwl4965_pci_remove),
6664 #ifdef CONFIG_PM
6665 .suspend = iwl4965_pci_suspend,
6666 .resume = iwl4965_pci_resume,
6667 #endif
6668 };
6669
6670 static int __init iwl4965_init(void)
6671 {
6672
6673 int ret;
6674 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
6675 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
6676
6677 ret = iwl4965_rate_control_register();
6678 if (ret) {
6679 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
6680 return ret;
6681 }
6682
6683 ret = pci_register_driver(&iwl_driver);
6684 if (ret) {
6685 IWL_ERROR("Unable to initialize PCI module\n");
6686 goto error_register;
6687 }
6688
6689 return ret;
6690
6691 error_register:
6692 iwl4965_rate_control_unregister();
6693 return ret;
6694 }
6695
6696 static void __exit iwl4965_exit(void)
6697 {
6698 pci_unregister_driver(&iwl_driver);
6699 iwl4965_rate_control_unregister();
6700 }
6701
6702 module_exit(iwl4965_exit);
6703 module_init(iwl4965_init);
Linux kernel - Deliverables
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