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On Tue, Nov 06, 2007 at 02:33:53AM -0800, akpm@linux-foundation.org wrote:
[mmotm.git] / drivers / net / wireless / iwlwifi / iwl3945-base.c
blob5f3b6ea714812ddd38673d9c4e77036b6ac0be12
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2009 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 * Intel Linux Wireless <ilw@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/init.h>
33 #include <linux/pci.h>
34 #include <linux/dma-mapping.h>
35 #include <linux/delay.h>
36 #include <linux/sched.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/ieee80211_radiotap.h>
45 #include <net/mac80211.h>
46
47 #include <asm/div64.h>
48
49 #define DRV_NAME "iwl3945"
50
51 #include "iwl-fh.h"
52 #include "iwl-3945-fh.h"
53 #include "iwl-commands.h"
54 #include "iwl-sta.h"
55 #include "iwl-3945.h"
56 #include "iwl-helpers.h"
57 #include "iwl-core.h"
58 #include "iwl-dev.h"
59
60 /*
61 * module name, copyright, version, etc.
62 */
63
64 #define DRV_DESCRIPTION \
65 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
66
67 #ifdef CONFIG_IWLWIFI_DEBUG
68 #define VD "d"
69 #else
70 #define VD
71 #endif
72
73 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
74 #define VS "s"
75 #else
76 #define VS
77 #endif
78
79 #define IWL39_VERSION "1.2.26k" VD VS
80 #define DRV_COPYRIGHT "Copyright(c) 2003-2009 Intel Corporation"
81 #define DRV_AUTHOR "<ilw@linux.intel.com>"
82 #define DRV_VERSION IWL39_VERSION
83
84
85 MODULE_DESCRIPTION(DRV_DESCRIPTION);
86 MODULE_VERSION(DRV_VERSION);
87 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
88 MODULE_LICENSE("GPL");
89
90 /* module parameters */
91 struct iwl_mod_params iwl3945_mod_params = {
92 .sw_crypto = 1,
93 .restart_fw = 1,
94 /* the rest are 0 by default */
95 };
96
97 /**
98 * iwl3945_get_antenna_flags - Get antenna flags for RXON command
99 * @priv: eeprom and antenna fields are used to determine antenna flags
100 *
101 * priv->eeprom39 is used to determine if antenna AUX/MAIN are reversed
102 * iwl3945_mod_params.antenna specifies the antenna diversity mode:
103 *
104 * IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
105 * IWL_ANTENNA_MAIN - Force MAIN antenna
106 * IWL_ANTENNA_AUX - Force AUX antenna
107 */
108 __le32 iwl3945_get_antenna_flags(const struct iwl_priv *priv)
109 {
110 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
111
112 switch (iwl3945_mod_params.antenna) {
113 case IWL_ANTENNA_DIVERSITY:
114 return 0;
115
116 case IWL_ANTENNA_MAIN:
117 if (eeprom->antenna_switch_type)
118 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
119 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
120
121 case IWL_ANTENNA_AUX:
122 if (eeprom->antenna_switch_type)
123 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
124 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
125 }
126
127 /* bad antenna selector value */
128 IWL_ERR(priv, "Bad antenna selector value (0x%x)\n",
129 iwl3945_mod_params.antenna);
130
131 return 0; /* "diversity" is default if error */
132 }
133
134 static int iwl3945_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
135 struct ieee80211_key_conf *keyconf,
136 u8 sta_id)
137 {
138 unsigned long flags;
139 __le16 key_flags = 0;
140 int ret;
141
142 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
143 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
144
145 if (sta_id == priv->hw_params.bcast_sta_id)
146 key_flags |= STA_KEY_MULTICAST_MSK;
147
148 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
149 keyconf->hw_key_idx = keyconf->keyidx;
150 key_flags &= ~STA_KEY_FLG_INVALID;
151
152 spin_lock_irqsave(&priv->sta_lock, flags);
153 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
154 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
155 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
156 keyconf->keylen);
157
158 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
159 keyconf->keylen);
160
161 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
162 == STA_KEY_FLG_NO_ENC)
163 priv->stations[sta_id].sta.key.key_offset =
164 iwl_get_free_ucode_key_index(priv);
165 /* else, we are overriding an existing key => no need to allocated room
166 * in uCode. */
167
168 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
169 "no space for a new key");
170
171 priv->stations[sta_id].sta.key.key_flags = key_flags;
172 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
173 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
174
175 IWL_DEBUG_INFO(priv, "hwcrypto: modify ucode station key info\n");
176
177 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
178
179 spin_unlock_irqrestore(&priv->sta_lock, flags);
180
181 return ret;
182 }
183
184 static int iwl3945_set_tkip_dynamic_key_info(struct iwl_priv *priv,
185 struct ieee80211_key_conf *keyconf,
186 u8 sta_id)
187 {
188 return -EOPNOTSUPP;
189 }
190
191 static int iwl3945_set_wep_dynamic_key_info(struct iwl_priv *priv,
192 struct ieee80211_key_conf *keyconf,
193 u8 sta_id)
194 {
195 return -EOPNOTSUPP;
196 }
197
198 static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
199 {
200 unsigned long flags;
201
202 spin_lock_irqsave(&priv->sta_lock, flags);
203 memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl_hw_key));
204 memset(&priv->stations[sta_id].sta.key, 0,
205 sizeof(struct iwl4965_keyinfo));
206 priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
207 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
208 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
209 spin_unlock_irqrestore(&priv->sta_lock, flags);
210
211 IWL_DEBUG_INFO(priv, "hwcrypto: clear ucode station key info\n");
212 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, 0);
213 return 0;
214 }
215
216 static int iwl3945_set_dynamic_key(struct iwl_priv *priv,
217 struct ieee80211_key_conf *keyconf, u8 sta_id)
218 {
219 int ret = 0;
220
221 keyconf->hw_key_idx = HW_KEY_DYNAMIC;
222
223 switch (keyconf->alg) {
224 case ALG_CCMP:
225 ret = iwl3945_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
226 break;
227 case ALG_TKIP:
228 ret = iwl3945_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
229 break;
230 case ALG_WEP:
231 ret = iwl3945_set_wep_dynamic_key_info(priv, keyconf, sta_id);
232 break;
233 default:
234 IWL_ERR(priv, "Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
235 ret = -EINVAL;
236 }
237
238 IWL_DEBUG_WEP(priv, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
239 keyconf->alg, keyconf->keylen, keyconf->keyidx,
240 sta_id, ret);
241
242 return ret;
243 }
244
245 static int iwl3945_remove_static_key(struct iwl_priv *priv)
246 {
247 int ret = -EOPNOTSUPP;
248
249 return ret;
250 }
251
252 static int iwl3945_set_static_key(struct iwl_priv *priv,
253 struct ieee80211_key_conf *key)
254 {
255 if (key->alg == ALG_WEP)
256 return -EOPNOTSUPP;
257
258 IWL_ERR(priv, "Static key invalid: alg %d\n", key->alg);
259 return -EINVAL;
260 }
261
262 static void iwl3945_clear_free_frames(struct iwl_priv *priv)
263 {
264 struct list_head *element;
265
266 IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
267 priv->frames_count);
268
269 while (!list_empty(&priv->free_frames)) {
270 element = priv->free_frames.next;
271 list_del(element);
272 kfree(list_entry(element, struct iwl3945_frame, list));
273 priv->frames_count--;
274 }
275
276 if (priv->frames_count) {
277 IWL_WARN(priv, "%d frames still in use. Did we lose one?\n",
278 priv->frames_count);
279 priv->frames_count = 0;
280 }
281 }
282
283 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv)
284 {
285 struct iwl3945_frame *frame;
286 struct list_head *element;
287 if (list_empty(&priv->free_frames)) {
288 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
289 if (!frame) {
290 IWL_ERR(priv, "Could not allocate frame!\n");
291 return NULL;
292 }
293
294 priv->frames_count++;
295 return frame;
296 }
297
298 element = priv->free_frames.next;
299 list_del(element);
300 return list_entry(element, struct iwl3945_frame, list);
301 }
302
303 static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame)
304 {
305 memset(frame, 0, sizeof(*frame));
306 list_add(&frame->list, &priv->free_frames);
307 }
308
309 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
310 struct ieee80211_hdr *hdr,
311 int left)
312 {
313
314 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
315 ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
316 (priv->iw_mode != NL80211_IFTYPE_AP)))
317 return 0;
318
319 if (priv->ibss_beacon->len > left)
320 return 0;
321
322 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
323
324 return priv->ibss_beacon->len;
325 }
326
327 static int iwl3945_send_beacon_cmd(struct iwl_priv *priv)
328 {
329 struct iwl3945_frame *frame;
330 unsigned int frame_size;
331 int rc;
332 u8 rate;
333
334 frame = iwl3945_get_free_frame(priv);
335
336 if (!frame) {
337 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
338 "command.\n");
339 return -ENOMEM;
340 }
341
342 rate = iwl_rate_get_lowest_plcp(priv);
343
344 frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
345
346 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
347 &frame->u.cmd[0]);
348
349 iwl3945_free_frame(priv, frame);
350
351 return rc;
352 }
353
354 static void iwl3945_unset_hw_params(struct iwl_priv *priv)
355 {
356 if (priv->shared_virt)
357 pci_free_consistent(priv->pci_dev,
358 sizeof(struct iwl3945_shared),
359 priv->shared_virt,
360 priv->shared_phys);
361 }
362
363 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
364 struct ieee80211_tx_info *info,
365 struct iwl_device_cmd *cmd,
366 struct sk_buff *skb_frag,
367 int sta_id)
368 {
369 struct iwl3945_tx_cmd *tx_cmd = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
370 struct iwl_hw_key *keyinfo = &priv->stations[sta_id].keyinfo;
371
372 switch (keyinfo->alg) {
373 case ALG_CCMP:
374 tx_cmd->sec_ctl = TX_CMD_SEC_CCM;
375 memcpy(tx_cmd->key, keyinfo->key, keyinfo->keylen);
376 IWL_DEBUG_TX(priv, "tx_cmd with AES hwcrypto\n");
377 break;
378
379 case ALG_TKIP:
380 break;
381
382 case ALG_WEP:
383 tx_cmd->sec_ctl = TX_CMD_SEC_WEP |
384 (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
385
386 if (keyinfo->keylen == 13)
387 tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128;
388
389 memcpy(&tx_cmd->key[3], keyinfo->key, keyinfo->keylen);
390
391 IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption "
392 "with key %d\n", info->control.hw_key->hw_key_idx);
393 break;
394
395 default:
396 IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg);
397 break;
398 }
399 }
400
401 /*
402 * handle build REPLY_TX command notification.
403 */
404 static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
405 struct iwl_device_cmd *cmd,
406 struct ieee80211_tx_info *info,
407 struct ieee80211_hdr *hdr, u8 std_id)
408 {
409 struct iwl3945_tx_cmd *tx_cmd = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
410 __le32 tx_flags = tx_cmd->tx_flags;
411 __le16 fc = hdr->frame_control;
412
413 tx_cmd->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
414 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
415 tx_flags |= TX_CMD_FLG_ACK_MSK;
416 if (ieee80211_is_mgmt(fc))
417 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
418 if (ieee80211_is_probe_resp(fc) &&
419 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
420 tx_flags |= TX_CMD_FLG_TSF_MSK;
421 } else {
422 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
423 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
424 }
425
426 tx_cmd->sta_id = std_id;
427 if (ieee80211_has_morefrags(fc))
428 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
429
430 if (ieee80211_is_data_qos(fc)) {
431 u8 *qc = ieee80211_get_qos_ctl(hdr);
432 tx_cmd->tid_tspec = qc[0] & 0xf;
433 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
434 } else {
435 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
436 }
437
438 priv->cfg->ops->utils->rts_tx_cmd_flag(info, &tx_flags);
439
440 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
441 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
442
443 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
444 if (ieee80211_is_mgmt(fc)) {
445 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
446 tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(3);
447 else
448 tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(2);
449 } else {
450 tx_cmd->timeout.pm_frame_timeout = 0;
451 }
452
453 tx_cmd->driver_txop = 0;
454 tx_cmd->tx_flags = tx_flags;
455 tx_cmd->next_frame_len = 0;
456 }
457
458 /*
459 * start REPLY_TX command process
460 */
461 static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
462 {
463 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
464 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
465 struct iwl3945_tx_cmd *tx_cmd;
466 struct iwl_tx_queue *txq = NULL;
467 struct iwl_queue *q = NULL;
468 struct iwl_device_cmd *out_cmd;
469 struct iwl_cmd_meta *out_meta;
470 dma_addr_t phys_addr;
471 dma_addr_t txcmd_phys;
472 int txq_id = skb_get_queue_mapping(skb);
473 u16 len, idx, len_org, hdr_len; /* TODO: len_org is not used */
474 u8 id;
475 u8 unicast;
476 u8 sta_id;
477 u8 tid = 0;
478 u16 seq_number = 0;
479 __le16 fc;
480 u8 wait_write_ptr = 0;
481 u8 *qc = NULL;
482 unsigned long flags;
483 int rc;
484
485 spin_lock_irqsave(&priv->lock, flags);
486 if (iwl_is_rfkill(priv)) {
487 IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n");
488 goto drop_unlock;
489 }
490
491 if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
492 IWL_ERR(priv, "ERROR: No TX rate available.\n");
493 goto drop_unlock;
494 }
495
496 unicast = !is_multicast_ether_addr(hdr->addr1);
497 id = 0;
498
499 fc = hdr->frame_control;
500
501 #ifdef CONFIG_IWLWIFI_DEBUG
502 if (ieee80211_is_auth(fc))
503 IWL_DEBUG_TX(priv, "Sending AUTH frame\n");
504 else if (ieee80211_is_assoc_req(fc))
505 IWL_DEBUG_TX(priv, "Sending ASSOC frame\n");
506 else if (ieee80211_is_reassoc_req(fc))
507 IWL_DEBUG_TX(priv, "Sending REASSOC frame\n");
508 #endif
509
510 /* drop all non-injected data frame if we are not associated */
511 if (ieee80211_is_data(fc) &&
512 !(info->flags & IEEE80211_TX_CTL_INJECTED) &&
513 (!iwl_is_associated(priv) ||
514 ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
515 IWL_DEBUG_DROP(priv, "Dropping - !iwl_is_associated\n");
516 goto drop_unlock;
517 }
518
519 spin_unlock_irqrestore(&priv->lock, flags);
520
521 hdr_len = ieee80211_hdrlen(fc);
522
523 /* Find (or create) index into station table for destination station */
524 if (info->flags & IEEE80211_TX_CTL_INJECTED)
525 sta_id = priv->hw_params.bcast_sta_id;
526 else
527 sta_id = iwl_get_sta_id(priv, hdr);
528 if (sta_id == IWL_INVALID_STATION) {
529 IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n",
530 hdr->addr1);
531 goto drop;
532 }
533
534 IWL_DEBUG_RATE(priv, "station Id %d\n", sta_id);
535
536 if (ieee80211_is_data_qos(fc)) {
537 qc = ieee80211_get_qos_ctl(hdr);
538 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
539 if (unlikely(tid >= MAX_TID_COUNT))
540 goto drop;
541 seq_number = priv->stations[sta_id].tid[tid].seq_number &
542 IEEE80211_SCTL_SEQ;
543 hdr->seq_ctrl = cpu_to_le16(seq_number) |
544 (hdr->seq_ctrl &
545 cpu_to_le16(IEEE80211_SCTL_FRAG));
546 seq_number += 0x10;
547 }
548
549 /* Descriptor for chosen Tx queue */
550 txq = &priv->txq[txq_id];
551 q = &txq->q;
552
553 spin_lock_irqsave(&priv->lock, flags);
554
555 idx = get_cmd_index(q, q->write_ptr, 0);
556
557 /* Set up driver data for this TFD */
558 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
559 txq->txb[q->write_ptr].skb[0] = skb;
560
561 /* Init first empty entry in queue's array of Tx/cmd buffers */
562 out_cmd = txq->cmd[idx];
563 out_meta = &txq->meta[idx];
564 tx_cmd = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload;
565 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
566 memset(tx_cmd, 0, sizeof(*tx_cmd));
567
568 /*
569 * Set up the Tx-command (not MAC!) header.
570 * Store the chosen Tx queue and TFD index within the sequence field;
571 * after Tx, uCode's Tx response will return this value so driver can
572 * locate the frame within the tx queue and do post-tx processing.
573 */
574 out_cmd->hdr.cmd = REPLY_TX;
575 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
576 INDEX_TO_SEQ(q->write_ptr)));
577
578 /* Copy MAC header from skb into command buffer */
579 memcpy(tx_cmd->hdr, hdr, hdr_len);
580
581
582 if (info->control.hw_key)
583 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, sta_id);
584
585 /* TODO need this for burst mode later on */
586 iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id);
587
588 /* set is_hcca to 0; it probably will never be implemented */
589 iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
590
591 /* Total # bytes to be transmitted */
592 len = (u16)skb->len;
593 tx_cmd->len = cpu_to_le16(len);
594
595 iwl_dbg_log_tx_data_frame(priv, len, hdr);
596 iwl_update_stats(priv, true, fc, len);
597 tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
598 tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
599
600 if (!ieee80211_has_morefrags(hdr->frame_control)) {
601 txq->need_update = 1;
602 if (qc)
603 priv->stations[sta_id].tid[tid].seq_number = seq_number;
604 } else {
605 wait_write_ptr = 1;
606 txq->need_update = 0;
607 }
608
609 IWL_DEBUG_TX(priv, "sequence nr = 0X%x \n",
610 le16_to_cpu(out_cmd->hdr.sequence));
611 IWL_DEBUG_TX(priv, "tx_flags = 0X%x \n", le32_to_cpu(tx_cmd->tx_flags));
612 iwl_print_hex_dump(priv, IWL_DL_TX, tx_cmd, sizeof(*tx_cmd));
613 iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx_cmd->hdr,
614 ieee80211_hdrlen(fc));
615
616 /*
617 * Use the first empty entry in this queue's command buffer array
618 * to contain the Tx command and MAC header concatenated together
619 * (payload data will be in another buffer).
620 * Size of this varies, due to varying MAC header length.
621 * If end is not dword aligned, we'll have 2 extra bytes at the end
622 * of the MAC header (device reads on dword boundaries).
623 * We'll tell device about this padding later.
624 */
625 len = sizeof(struct iwl3945_tx_cmd) +
626 sizeof(struct iwl_cmd_header) + hdr_len;
627
628 len_org = len;
629 len = (len + 3) & ~3;
630
631 if (len_org != len)
632 len_org = 1;
633 else
634 len_org = 0;
635
636 /* Physical address of this Tx command's header (not MAC header!),
637 * within command buffer array. */
638 txcmd_phys = pci_map_single(priv->pci_dev, &out_cmd->hdr,
639 len, PCI_DMA_TODEVICE);
640 /* we do not map meta data ... so we can safely access address to
641 * provide to unmap command*/
642 pci_unmap_addr_set(out_meta, mapping, txcmd_phys);
643 pci_unmap_len_set(out_meta, len, len);
644
645 /* Add buffer containing Tx command and MAC(!) header to TFD's
646 * first entry */
647 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
648 txcmd_phys, len, 1, 0);
649
650
651 /* Set up TFD's 2nd entry to point directly to remainder of skb,
652 * if any (802.11 null frames have no payload). */
653 len = skb->len - hdr_len;
654 if (len) {
655 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
656 len, PCI_DMA_TODEVICE);
657 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
658 phys_addr, len,
659 0, U32_PAD(len));
660 }
661
662
663 /* Tell device the write index *just past* this latest filled TFD */
664 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
665 rc = iwl_txq_update_write_ptr(priv, txq);
666 spin_unlock_irqrestore(&priv->lock, flags);
667
668 if (rc)
669 return rc;
670
671 if ((iwl_queue_space(q) < q->high_mark)
672 && priv->mac80211_registered) {
673 if (wait_write_ptr) {
674 spin_lock_irqsave(&priv->lock, flags);
675 txq->need_update = 1;
676 iwl_txq_update_write_ptr(priv, txq);
677 spin_unlock_irqrestore(&priv->lock, flags);
678 }
679
680 iwl_stop_queue(priv, skb_get_queue_mapping(skb));
681 }
682
683 return 0;
684
685 drop_unlock:
686 spin_unlock_irqrestore(&priv->lock, flags);
687 drop:
688 return -1;
689 }
690
691 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
692
693 #include "iwl-spectrum.h"
694
695 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
696 #define BEACON_TIME_MASK_HIGH 0xFF000000
697 #define TIME_UNIT 1024
698
699 /*
700 * extended beacon time format
701 * time in usec will be changed into a 32-bit value in 8:24 format
702 * the high 1 byte is the beacon counts
703 * the lower 3 bytes is the time in usec within one beacon interval
704 */
705
706 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
707 {
708 u32 quot;
709 u32 rem;
710 u32 interval = beacon_interval * 1024;
711
712 if (!interval || !usec)
713 return 0;
714
715 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
716 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
717
718 return (quot << 24) + rem;
719 }
720
721 /* base is usually what we get from ucode with each received frame,
722 * the same as HW timer counter counting down
723 */
724
725 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
726 {
727 u32 base_low = base & BEACON_TIME_MASK_LOW;
728 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
729 u32 interval = beacon_interval * TIME_UNIT;
730 u32 res = (base & BEACON_TIME_MASK_HIGH) +
731 (addon & BEACON_TIME_MASK_HIGH);
732
733 if (base_low > addon_low)
734 res += base_low - addon_low;
735 else if (base_low < addon_low) {
736 res += interval + base_low - addon_low;
737 res += (1 << 24);
738 } else
739 res += (1 << 24);
740
741 return cpu_to_le32(res);
742 }
743
744 static int iwl3945_get_measurement(struct iwl_priv *priv,
745 struct ieee80211_measurement_params *params,
746 u8 type)
747 {
748 struct iwl_spectrum_cmd spectrum;
749 struct iwl_rx_packet *pkt;
750 struct iwl_host_cmd cmd = {
751 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
752 .data = (void *)&spectrum,
753 .flags = CMD_WANT_SKB,
754 };
755 u32 add_time = le64_to_cpu(params->start_time);
756 int rc;
757 int spectrum_resp_status;
758 int duration = le16_to_cpu(params->duration);
759
760 if (iwl_is_associated(priv))
761 add_time =
762 iwl3945_usecs_to_beacons(
763 le64_to_cpu(params->start_time) - priv->last_tsf,
764 le16_to_cpu(priv->rxon_timing.beacon_interval));
765
766 memset(&spectrum, 0, sizeof(spectrum));
767
768 spectrum.channel_count = cpu_to_le16(1);
769 spectrum.flags =
770 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
771 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
772 cmd.len = sizeof(spectrum);
773 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
774
775 if (iwl_is_associated(priv))
776 spectrum.start_time =
777 iwl3945_add_beacon_time(priv->last_beacon_time,
778 add_time,
779 le16_to_cpu(priv->rxon_timing.beacon_interval));
780 else
781 spectrum.start_time = 0;
782
783 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
784 spectrum.channels[0].channel = params->channel;
785 spectrum.channels[0].type = type;
786 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
787 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
788 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
789
790 rc = iwl_send_cmd_sync(priv, &cmd);
791 if (rc)
792 return rc;
793
794 pkt = (struct iwl_rx_packet *)cmd.reply_page;
795 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
796 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
797 rc = -EIO;
798 }
799
800 spectrum_resp_status = le16_to_cpu(pkt->u.spectrum.status);
801 switch (spectrum_resp_status) {
802 case 0: /* Command will be handled */
803 if (pkt->u.spectrum.id != 0xff) {
804 IWL_DEBUG_INFO(priv, "Replaced existing measurement: %d\n",
805 pkt->u.spectrum.id);
806 priv->measurement_status &= ~MEASUREMENT_READY;
807 }
808 priv->measurement_status |= MEASUREMENT_ACTIVE;
809 rc = 0;
810 break;
811
812 case 1: /* Command will not be handled */
813 rc = -EAGAIN;
814 break;
815 }
816
817 free_pages(cmd.reply_page, priv->hw_params.rx_page_order);
818
819 return rc;
820 }
821 #endif
822
823 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
824 struct iwl_rx_mem_buffer *rxb)
825 {
826 struct iwl_rx_packet *pkt = rxb_addr(rxb);
827 struct iwl_alive_resp *palive;
828 struct delayed_work *pwork;
829
830 palive = &pkt->u.alive_frame;
831
832 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
833 "0x%01X 0x%01X\n",
834 palive->is_valid, palive->ver_type,
835 palive->ver_subtype);
836
837 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
838 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
839 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
840 sizeof(struct iwl_alive_resp));
841 pwork = &priv->init_alive_start;
842 } else {
843 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
844 memcpy(&priv->card_alive, &pkt->u.alive_frame,
845 sizeof(struct iwl_alive_resp));
846 pwork = &priv->alive_start;
847 iwl3945_disable_events(priv);
848 }
849
850 /* We delay the ALIVE response by 5ms to
851 * give the HW RF Kill time to activate... */
852 if (palive->is_valid == UCODE_VALID_OK)
853 queue_delayed_work(priv->workqueue, pwork,
854 msecs_to_jiffies(5));
855 else
856 IWL_WARN(priv, "uCode did not respond OK.\n");
857 }
858
859 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
860 struct iwl_rx_mem_buffer *rxb)
861 {
862 #ifdef CONFIG_IWLWIFI_DEBUG
863 struct iwl_rx_packet *pkt = rxb_addr(rxb);
864 #endif
865
866 IWL_DEBUG_RX(priv, "Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
867 return;
868 }
869
870 static void iwl3945_bg_beacon_update(struct work_struct *work)
871 {
872 struct iwl_priv *priv =
873 container_of(work, struct iwl_priv, beacon_update);
874 struct sk_buff *beacon;
875
876 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
877 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
878
879 if (!beacon) {
880 IWL_ERR(priv, "update beacon failed\n");
881 return;
882 }
883
884 mutex_lock(&priv->mutex);
885 /* new beacon skb is allocated every time; dispose previous.*/
886 if (priv->ibss_beacon)
887 dev_kfree_skb(priv->ibss_beacon);
888
889 priv->ibss_beacon = beacon;
890 mutex_unlock(&priv->mutex);
891
892 iwl3945_send_beacon_cmd(priv);
893 }
894
895 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
896 struct iwl_rx_mem_buffer *rxb)
897 {
898 #ifdef CONFIG_IWLWIFI_DEBUG
899 struct iwl_rx_packet *pkt = rxb_addr(rxb);
900 struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
901 u8 rate = beacon->beacon_notify_hdr.rate;
902
903 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
904 "tsf %d %d rate %d\n",
905 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
906 beacon->beacon_notify_hdr.failure_frame,
907 le32_to_cpu(beacon->ibss_mgr_status),
908 le32_to_cpu(beacon->high_tsf),
909 le32_to_cpu(beacon->low_tsf), rate);
910 #endif
911
912 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
913 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
914 queue_work(priv->workqueue, &priv->beacon_update);
915 }
916
917 /* Handle notification from uCode that card's power state is changing
918 * due to software, hardware, or critical temperature RFKILL */
919 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
920 struct iwl_rx_mem_buffer *rxb)
921 {
922 struct iwl_rx_packet *pkt = rxb_addr(rxb);
923 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
924 unsigned long status = priv->status;
925
926 IWL_WARN(priv, "Card state received: HW:%s SW:%s\n",
927 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
928 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
929
930 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
931 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
932
933 if (flags & HW_CARD_DISABLED)
934 set_bit(STATUS_RF_KILL_HW, &priv->status);
935 else
936 clear_bit(STATUS_RF_KILL_HW, &priv->status);
937
938
939 iwl_scan_cancel(priv);
940
941 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
942 test_bit(STATUS_RF_KILL_HW, &priv->status)))
943 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
944 test_bit(STATUS_RF_KILL_HW, &priv->status));
945 else
946 wake_up_interruptible(&priv->wait_command_queue);
947 }
948
949 /**
950 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
951 *
952 * Setup the RX handlers for each of the reply types sent from the uCode
953 * to the host.
954 *
955 * This function chains into the hardware specific files for them to setup
956 * any hardware specific handlers as well.
957 */
958 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
959 {
960 priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
961 priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
962 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
963 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
964 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
965 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
966 iwl_rx_pm_debug_statistics_notif;
967 priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
968
969 /*
970 * The same handler is used for both the REPLY to a discrete
971 * statistics request from the host as well as for the periodic
972 * statistics notifications (after received beacons) from the uCode.
973 */
974 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
975 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
976
977 iwl_setup_spectrum_handlers(priv);
978 iwl_setup_rx_scan_handlers(priv);
979 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
980
981 /* Set up hardware specific Rx handlers */
982 iwl3945_hw_rx_handler_setup(priv);
983 }
984
985 /************************** RX-FUNCTIONS ****************************/
986 /*
987 * Rx theory of operation
988 *
989 * The host allocates 32 DMA target addresses and passes the host address
990 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
991 * 0 to 31
992 *
993 * Rx Queue Indexes
994 * The host/firmware share two index registers for managing the Rx buffers.
995 *
996 * The READ index maps to the first position that the firmware may be writing
997 * to -- the driver can read up to (but not including) this position and get
998 * good data.
999 * The READ index is managed by the firmware once the card is enabled.
1000 *
1001 * The WRITE index maps to the last position the driver has read from -- the
1002 * position preceding WRITE is the last slot the firmware can place a packet.
1003 *
1004 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
1005 * WRITE = READ.
1006 *
1007 * During initialization, the host sets up the READ queue position to the first
1008 * INDEX position, and WRITE to the last (READ - 1 wrapped)
1009 *
1010 * When the firmware places a packet in a buffer, it will advance the READ index
1011 * and fire the RX interrupt. The driver can then query the READ index and
1012 * process as many packets as possible, moving the WRITE index forward as it
1013 * resets the Rx queue buffers with new memory.
1014 *
1015 * The management in the driver is as follows:
1016 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
1017 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
1018 * to replenish the iwl->rxq->rx_free.
1019 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
1020 * iwl->rxq is replenished and the READ INDEX is updated (updating the
1021 * 'processed' and 'read' driver indexes as well)
1022 * + A received packet is processed and handed to the kernel network stack,
1023 * detached from the iwl->rxq. The driver 'processed' index is updated.
1024 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
1025 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
1026 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
1027 * were enough free buffers and RX_STALLED is set it is cleared.
1028 *
1029 *
1030 * Driver sequence:
1031 *
1032 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
1033 * iwl3945_rx_queue_restock
1034 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
1035 * queue, updates firmware pointers, and updates
1036 * the WRITE index. If insufficient rx_free buffers
1037 * are available, schedules iwl3945_rx_replenish
1038 *
1039 * -- enable interrupts --
1040 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
1041 * READ INDEX, detaching the SKB from the pool.
1042 * Moves the packet buffer from queue to rx_used.
1043 * Calls iwl3945_rx_queue_restock to refill any empty
1044 * slots.
1045 * ...
1046 *
1047 */
1048
1049 /**
1050 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
1051 */
1052 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
1053 dma_addr_t dma_addr)
1054 {
1055 return cpu_to_le32((u32)dma_addr);
1056 }
1057
1058 /**
1059 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
1060 *
1061 * If there are slots in the RX queue that need to be restocked,
1062 * and we have free pre-allocated buffers, fill the ranks as much
1063 * as we can, pulling from rx_free.
1064 *
1065 * This moves the 'write' index forward to catch up with 'processed', and
1066 * also updates the memory address in the firmware to reference the new
1067 * target buffer.
1068 */
1069 static int iwl3945_rx_queue_restock(struct iwl_priv *priv)
1070 {
1071 struct iwl_rx_queue *rxq = &priv->rxq;
1072 struct list_head *element;
1073 struct iwl_rx_mem_buffer *rxb;
1074 unsigned long flags;
1075 int write, rc;
1076
1077 spin_lock_irqsave(&rxq->lock, flags);
1078 write = rxq->write & ~0x7;
1079 while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
1080 /* Get next free Rx buffer, remove from free list */
1081 element = rxq->rx_free.next;
1082 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1083 list_del(element);
1084
1085 /* Point to Rx buffer via next RBD in circular buffer */
1086 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->page_dma);
1087 rxq->queue[rxq->write] = rxb;
1088 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
1089 rxq->free_count--;
1090 }
1091 spin_unlock_irqrestore(&rxq->lock, flags);
1092 /* If the pre-allocated buffer pool is dropping low, schedule to
1093 * refill it */
1094 if (rxq->free_count <= RX_LOW_WATERMARK)
1095 queue_work(priv->workqueue, &priv->rx_replenish);
1096
1097
1098 /* If we've added more space for the firmware to place data, tell it.
1099 * Increment device's write pointer in multiples of 8. */
1100 if ((rxq->write_actual != (rxq->write & ~0x7))
1101 || (abs(rxq->write - rxq->read) > 7)) {
1102 spin_lock_irqsave(&rxq->lock, flags);
1103 rxq->need_update = 1;
1104 spin_unlock_irqrestore(&rxq->lock, flags);
1105 rc = iwl_rx_queue_update_write_ptr(priv, rxq);
1106 if (rc)
1107 return rc;
1108 }
1109
1110 return 0;
1111 }
1112
1113 /**
1114 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1115 *
1116 * When moving to rx_free an SKB is allocated for the slot.
1117 *
1118 * Also restock the Rx queue via iwl3945_rx_queue_restock.
1119 * This is called as a scheduled work item (except for during initialization)
1120 */
1121 static void iwl3945_rx_allocate(struct iwl_priv *priv, gfp_t priority)
1122 {
1123 struct iwl_rx_queue *rxq = &priv->rxq;
1124 struct list_head *element;
1125 struct iwl_rx_mem_buffer *rxb;
1126 struct page *page;
1127 unsigned long flags;
1128
1129 while (1) {
1130 spin_lock_irqsave(&rxq->lock, flags);
1131
1132 if (list_empty(&rxq->rx_used)) {
1133 spin_unlock_irqrestore(&rxq->lock, flags);
1134 return;
1135 }
1136 spin_unlock_irqrestore(&rxq->lock, flags);
1137
1138 if (rxq->free_count > RX_LOW_WATERMARK)
1139 priority |= __GFP_NOWARN;
1140
1141 if (priv->hw_params.rx_page_order > 0)
1142 priority |= __GFP_COMP;
1143
1144 /* Alloc a new receive buffer */
1145 page = alloc_pages(priority, priv->hw_params.rx_page_order);
1146 if (!page) {
1147 if (net_ratelimit())
1148 IWL_DEBUG_INFO(priv, "Failed to allocate SKB buffer.\n");
1149 if ((rxq->free_count <= RX_LOW_WATERMARK) &&
1150 net_ratelimit())
1151 IWL_CRIT(priv, "Failed to allocate SKB buffer with %s. Only %u free buffers remaining.\n",
1152 priority == GFP_ATOMIC ? "GFP_ATOMIC" : "GFP_KERNEL",
1153 rxq->free_count);
1154 /* We don't reschedule replenish work here -- we will
1155 * call the restock method and if it still needs
1156 * more buffers it will schedule replenish */
1157 break;
1158 }
1159
1160 spin_lock_irqsave(&rxq->lock, flags);
1161 if (list_empty(&rxq->rx_used)) {
1162 spin_unlock_irqrestore(&rxq->lock, flags);
1163 __free_pages(page, priv->hw_params.rx_page_order);
1164 return;
1165 }
1166 element = rxq->rx_used.next;
1167 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1168 list_del(element);
1169 spin_unlock_irqrestore(&rxq->lock, flags);
1170
1171 rxb->page = page;
1172 /* Get physical address of RB/SKB */
1173 rxb->page_dma = pci_map_page(priv->pci_dev, page, 0,
1174 PAGE_SIZE << priv->hw_params.rx_page_order,
1175 PCI_DMA_FROMDEVICE);
1176
1177 spin_lock_irqsave(&rxq->lock, flags);
1178
1179 list_add_tail(&rxb->list, &rxq->rx_free);
1180 rxq->free_count++;
1181 priv->alloc_rxb_page++;
1182
1183 spin_unlock_irqrestore(&rxq->lock, flags);
1184 }
1185 }
1186
1187 void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1188 {
1189 unsigned long flags;
1190 int i;
1191 spin_lock_irqsave(&rxq->lock, flags);
1192 INIT_LIST_HEAD(&rxq->rx_free);
1193 INIT_LIST_HEAD(&rxq->rx_used);
1194 /* Fill the rx_used queue with _all_ of the Rx buffers */
1195 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
1196 /* In the reset function, these buffers may have been allocated
1197 * to an SKB, so we need to unmap and free potential storage */
1198 if (rxq->pool[i].page != NULL) {
1199 pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
1200 PAGE_SIZE << priv->hw_params.rx_page_order,
1201 PCI_DMA_FROMDEVICE);
1202 priv->alloc_rxb_page--;
1203 __free_pages(rxq->pool[i].page,
1204 priv->hw_params.rx_page_order);
1205 rxq->pool[i].page = NULL;
1206 }
1207 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
1208 }
1209
1210 /* Set us so that we have processed and used all buffers, but have
1211 * not restocked the Rx queue with fresh buffers */
1212 rxq->read = rxq->write = 0;
1213 rxq->write_actual = 0;
1214 rxq->free_count = 0;
1215 spin_unlock_irqrestore(&rxq->lock, flags);
1216 }
1217
1218 void iwl3945_rx_replenish(void *data)
1219 {
1220 struct iwl_priv *priv = data;
1221 unsigned long flags;
1222
1223 iwl3945_rx_allocate(priv, GFP_KERNEL);
1224
1225 spin_lock_irqsave(&priv->lock, flags);
1226 iwl3945_rx_queue_restock(priv);
1227 spin_unlock_irqrestore(&priv->lock, flags);
1228 }
1229
1230 static void iwl3945_rx_replenish_now(struct iwl_priv *priv)
1231 {
1232 iwl3945_rx_allocate(priv, GFP_ATOMIC);
1233
1234 iwl3945_rx_queue_restock(priv);
1235 }
1236
1237
1238 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1239 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1240 * This free routine walks the list of POOL entries and if SKB is set to
1241 * non NULL it is unmapped and freed
1242 */
1243 static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1244 {
1245 int i;
1246 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
1247 if (rxq->pool[i].page != NULL) {
1248 pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
1249 PAGE_SIZE << priv->hw_params.rx_page_order,
1250 PCI_DMA_FROMDEVICE);
1251 __free_pages(rxq->pool[i].page,
1252 priv->hw_params.rx_page_order);
1253 rxq->pool[i].page = NULL;
1254 priv->alloc_rxb_page--;
1255 }
1256 }
1257
1258 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
1259 rxq->dma_addr);
1260 pci_free_consistent(priv->pci_dev, sizeof(struct iwl_rb_status),
1261 rxq->rb_stts, rxq->rb_stts_dma);
1262 rxq->bd = NULL;
1263 rxq->rb_stts = NULL;
1264 }
1265
1266
1267 /* Convert linear signal-to-noise ratio into dB */
1268 static u8 ratio2dB[100] = {
1269 /* 0 1 2 3 4 5 6 7 8 9 */
1270 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1271 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1272 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1273 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1274 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1275 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1276 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1277 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1278 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1279 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1280 };
1281
1282 /* Calculates a relative dB value from a ratio of linear
1283 * (i.e. not dB) signal levels.
1284 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1285 int iwl3945_calc_db_from_ratio(int sig_ratio)
1286 {
1287 /* 1000:1 or higher just report as 60 dB */
1288 if (sig_ratio >= 1000)
1289 return 60;
1290
1291 /* 100:1 or higher, divide by 10 and use table,
1292 * add 20 dB to make up for divide by 10 */
1293 if (sig_ratio >= 100)
1294 return 20 + (int)ratio2dB[sig_ratio/10];
1295
1296 /* We shouldn't see this */
1297 if (sig_ratio < 1)
1298 return 0;
1299
1300 /* Use table for ratios 1:1 - 99:1 */
1301 return (int)ratio2dB[sig_ratio];
1302 }
1303
1304 #define PERFECT_RSSI (-20) /* dBm */
1305 #define WORST_RSSI (-95) /* dBm */
1306 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
1307
1308 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
1309 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
1310 * about formulas used below. */
1311 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
1312 {
1313 int sig_qual;
1314 int degradation = PERFECT_RSSI - rssi_dbm;
1315
1316 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
1317 * as indicator; formula is (signal dbm - noise dbm).
1318 * SNR at or above 40 is a great signal (100%).
1319 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
1320 * Weakest usable signal is usually 10 - 15 dB SNR. */
1321 if (noise_dbm) {
1322 if (rssi_dbm - noise_dbm >= 40)
1323 return 100;
1324 else if (rssi_dbm < noise_dbm)
1325 return 0;
1326 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
1327
1328 /* Else use just the signal level.
1329 * This formula is a least squares fit of data points collected and
1330 * compared with a reference system that had a percentage (%) display
1331 * for signal quality. */
1332 } else
1333 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
1334 (15 * RSSI_RANGE + 62 * degradation)) /
1335 (RSSI_RANGE * RSSI_RANGE);
1336
1337 if (sig_qual > 100)
1338 sig_qual = 100;
1339 else if (sig_qual < 1)
1340 sig_qual = 0;
1341
1342 return sig_qual;
1343 }
1344
1345 /**
1346 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1347 *
1348 * Uses the priv->rx_handlers callback function array to invoke
1349 * the appropriate handlers, including command responses,
1350 * frame-received notifications, and other notifications.
1351 */
1352 static void iwl3945_rx_handle(struct iwl_priv *priv)
1353 {
1354 struct iwl_rx_mem_buffer *rxb;
1355 struct iwl_rx_packet *pkt;
1356 struct iwl_rx_queue *rxq = &priv->rxq;
1357 u32 r, i;
1358 int reclaim;
1359 unsigned long flags;
1360 u8 fill_rx = 0;
1361 u32 count = 8;
1362 int total_empty = 0;
1363
1364 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1365 * buffer that the driver may process (last buffer filled by ucode). */
1366 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
1367 i = rxq->read;
1368
1369 /* calculate total frames need to be restock after handling RX */
1370 total_empty = r - priv->rxq.write_actual;
1371 if (total_empty < 0)
1372 total_empty += RX_QUEUE_SIZE;
1373
1374 if (total_empty > (RX_QUEUE_SIZE / 2))
1375 fill_rx = 1;
1376 /* Rx interrupt, but nothing sent from uCode */
1377 if (i == r)
1378 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
1379
1380 while (i != r) {
1381 rxb = rxq->queue[i];
1382
1383 /* If an RXB doesn't have a Rx queue slot associated with it,
1384 * then a bug has been introduced in the queue refilling
1385 * routines -- catch it here */
1386 BUG_ON(rxb == NULL);
1387
1388 rxq->queue[i] = NULL;
1389
1390 pci_unmap_page(priv->pci_dev, rxb->page_dma,
1391 PAGE_SIZE << priv->hw_params.rx_page_order,
1392 PCI_DMA_FROMDEVICE);
1393 pkt = rxb_addr(rxb);
1394
1395 trace_iwlwifi_dev_rx(priv, pkt,
1396 le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK);
1397
1398 /* Reclaim a command buffer only if this packet is a response
1399 * to a (driver-originated) command.
1400 * If the packet (e.g. Rx frame) originated from uCode,
1401 * there is no command buffer to reclaim.
1402 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1403 * but apparently a few don't get set; catch them here. */
1404 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1405 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1406 (pkt->hdr.cmd != REPLY_TX);
1407
1408 /* Based on type of command response or notification,
1409 * handle those that need handling via function in
1410 * rx_handlers table. See iwl3945_setup_rx_handlers() */
1411 if (priv->rx_handlers[pkt->hdr.cmd]) {
1412 IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r, i,
1413 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1414 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1415 priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
1416 } else {
1417 /* No handling needed */
1418 IWL_DEBUG_RX(priv,
1419 "r %d i %d No handler needed for %s, 0x%02x\n",
1420 r, i, get_cmd_string(pkt->hdr.cmd),
1421 pkt->hdr.cmd);
1422 }
1423
1424 if (reclaim) {
1425 /* Invoke any callbacks, transfer the buffer to caller,
1426 * and fire off the (possibly) blocking iwl_send_cmd()
1427 * as we reclaim the driver command queue */
1428 if (rxb && rxb->page)
1429 iwl_tx_cmd_complete(priv, rxb);
1430 else
1431 IWL_WARN(priv, "Claim null rxb?\n");
1432 }
1433
1434 /* For now we just don't re-use anything. We can tweak this
1435 * later to try and re-use notification packets and SKBs that
1436 * fail to Rx correctly */
1437 if (rxb->page != NULL) {
1438 priv->alloc_rxb_page--;
1439 __free_pages(rxb->page, priv->hw_params.rx_page_order);
1440 rxb->page = NULL;
1441 }
1442
1443 spin_lock_irqsave(&rxq->lock, flags);
1444 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1445 spin_unlock_irqrestore(&rxq->lock, flags);
1446 i = (i + 1) & RX_QUEUE_MASK;
1447 /* If there are a lot of unused frames,
1448 * restock the Rx queue so ucode won't assert. */
1449 if (fill_rx) {
1450 count++;
1451 if (count >= 8) {
1452 priv->rxq.read = i;
1453 iwl3945_rx_replenish_now(priv);
1454 count = 0;
1455 }
1456 }
1457 }
1458
1459 /* Backtrack one entry */
1460 priv->rxq.read = i;
1461 if (fill_rx)
1462 iwl3945_rx_replenish_now(priv);
1463 else
1464 iwl3945_rx_queue_restock(priv);
1465 }
1466
1467 /* call this function to flush any scheduled tasklet */
1468 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1469 {
1470 /* wait to make sure we flush pending tasklet*/
1471 synchronize_irq(priv->pci_dev->irq);
1472 tasklet_kill(&priv->irq_tasklet);
1473 }
1474
1475 #ifdef CONFIG_IWLWIFI_DEBUG
1476 static const char *desc_lookup(int i)
1477 {
1478 switch (i) {
1479 case 1:
1480 return "FAIL";
1481 case 2:
1482 return "BAD_PARAM";
1483 case 3:
1484 return "BAD_CHECKSUM";
1485 case 4:
1486 return "NMI_INTERRUPT";
1487 case 5:
1488 return "SYSASSERT";
1489 case 6:
1490 return "FATAL_ERROR";
1491 }
1492
1493 return "UNKNOWN";
1494 }
1495
1496 #define ERROR_START_OFFSET (1 * sizeof(u32))
1497 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1498
1499 void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
1500 {
1501 u32 i;
1502 u32 desc, time, count, base, data1;
1503 u32 blink1, blink2, ilink1, ilink2;
1504
1505 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1506
1507 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1508 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1509 return;
1510 }
1511
1512
1513 count = iwl_read_targ_mem(priv, base);
1514
1515 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1516 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1517 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1518 priv->status, count);
1519 }
1520
1521 IWL_ERR(priv, "Desc Time asrtPC blink2 "
1522 "ilink1 nmiPC Line\n");
1523 for (i = ERROR_START_OFFSET;
1524 i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
1525 i += ERROR_ELEM_SIZE) {
1526 desc = iwl_read_targ_mem(priv, base + i);
1527 time =
1528 iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
1529 blink1 =
1530 iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
1531 blink2 =
1532 iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
1533 ilink1 =
1534 iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
1535 ilink2 =
1536 iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
1537 data1 =
1538 iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
1539
1540 IWL_ERR(priv,
1541 "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1542 desc_lookup(desc), desc, time, blink1, blink2,
1543 ilink1, ilink2, data1);
1544 trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, 0,
1545 0, blink1, blink2, ilink1, ilink2);
1546 }
1547 }
1548
1549 #define EVENT_START_OFFSET (6 * sizeof(u32))
1550
1551 /**
1552 * iwl3945_print_event_log - Dump error event log to syslog
1553 *
1554 */
1555 static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
1556 u32 num_events, u32 mode)
1557 {
1558 u32 i;
1559 u32 base; /* SRAM byte address of event log header */
1560 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1561 u32 ptr; /* SRAM byte address of log data */
1562 u32 ev, time, data; /* event log data */
1563
1564 if (num_events == 0)
1565 return;
1566
1567 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1568
1569 if (mode == 0)
1570 event_size = 2 * sizeof(u32);
1571 else
1572 event_size = 3 * sizeof(u32);
1573
1574 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1575
1576 /* "time" is actually "data" for mode 0 (no timestamp).
1577 * place event id # at far right for easier visual parsing. */
1578 for (i = 0; i < num_events; i++) {
1579 ev = iwl_read_targ_mem(priv, ptr);
1580 ptr += sizeof(u32);
1581 time = iwl_read_targ_mem(priv, ptr);
1582 ptr += sizeof(u32);
1583 if (mode == 0) {
1584 /* data, ev */
1585 IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
1586 trace_iwlwifi_dev_ucode_event(priv, 0, time, ev);
1587 } else {
1588 data = iwl_read_targ_mem(priv, ptr);
1589 ptr += sizeof(u32);
1590 IWL_ERR(priv, "%010u\t0x%08x\t%04u\n", time, data, ev);
1591 trace_iwlwifi_dev_ucode_event(priv, time, data, ev);
1592 }
1593 }
1594 }
1595
1596 void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
1597 {
1598 u32 base; /* SRAM byte address of event log header */
1599 u32 capacity; /* event log capacity in # entries */
1600 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1601 u32 num_wraps; /* # times uCode wrapped to top of log */
1602 u32 next_entry; /* index of next entry to be written by uCode */
1603 u32 size; /* # entries that we'll print */
1604
1605 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1606 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1607 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1608 return;
1609 }
1610
1611 /* event log header */
1612 capacity = iwl_read_targ_mem(priv, base);
1613 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1614 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1615 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1616
1617 size = num_wraps ? capacity : next_entry;
1618
1619 /* bail out if nothing in log */
1620 if (size == 0) {
1621 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1622 return;
1623 }
1624
1625 IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1626 size, num_wraps);
1627
1628 /* if uCode has wrapped back to top of log, start at the oldest entry,
1629 * i.e the next one that uCode would fill. */
1630 if (num_wraps)
1631 iwl3945_print_event_log(priv, next_entry,
1632 capacity - next_entry, mode);
1633
1634 /* (then/else) start at top of log */
1635 iwl3945_print_event_log(priv, 0, next_entry, mode);
1636
1637 }
1638 #else
1639 void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
1640 {
1641 }
1642
1643 void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
1644 {
1645 }
1646
1647 #endif
1648
1649 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
1650 {
1651 u32 inta, handled = 0;
1652 u32 inta_fh;
1653 unsigned long flags;
1654 #ifdef CONFIG_IWLWIFI_DEBUG
1655 u32 inta_mask;
1656 #endif
1657
1658 spin_lock_irqsave(&priv->lock, flags);
1659
1660 /* Ack/clear/reset pending uCode interrupts.
1661 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1662 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1663 inta = iwl_read32(priv, CSR_INT);
1664 iwl_write32(priv, CSR_INT, inta);
1665
1666 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1667 * Any new interrupts that happen after this, either while we're
1668 * in this tasklet, or later, will show up in next ISR/tasklet. */
1669 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1670 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1671
1672 #ifdef CONFIG_IWLWIFI_DEBUG
1673 if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1674 /* just for debug */
1675 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1676 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1677 inta, inta_mask, inta_fh);
1678 }
1679 #endif
1680
1681 spin_unlock_irqrestore(&priv->lock, flags);
1682
1683 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1684 * atomic, make sure that inta covers all the interrupts that
1685 * we've discovered, even if FH interrupt came in just after
1686 * reading CSR_INT. */
1687 if (inta_fh & CSR39_FH_INT_RX_MASK)
1688 inta |= CSR_INT_BIT_FH_RX;
1689 if (inta_fh & CSR39_FH_INT_TX_MASK)
1690 inta |= CSR_INT_BIT_FH_TX;
1691
1692 /* Now service all interrupt bits discovered above. */
1693 if (inta & CSR_INT_BIT_HW_ERR) {
1694 IWL_ERR(priv, "Hardware error detected. Restarting.\n");
1695
1696 /* Tell the device to stop sending interrupts */
1697 iwl_disable_interrupts(priv);
1698
1699 priv->isr_stats.hw++;
1700 iwl_irq_handle_error(priv);
1701
1702 handled |= CSR_INT_BIT_HW_ERR;
1703
1704 return;
1705 }
1706
1707 #ifdef CONFIG_IWLWIFI_DEBUG
1708 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1709 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1710 if (inta & CSR_INT_BIT_SCD) {
1711 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1712 "the frame/frames.\n");
1713 priv->isr_stats.sch++;
1714 }
1715
1716 /* Alive notification via Rx interrupt will do the real work */
1717 if (inta & CSR_INT_BIT_ALIVE) {
1718 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1719 priv->isr_stats.alive++;
1720 }
1721 }
1722 #endif
1723 /* Safely ignore these bits for debug checks below */
1724 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1725
1726 /* Error detected by uCode */
1727 if (inta & CSR_INT_BIT_SW_ERR) {
1728 IWL_ERR(priv, "Microcode SW error detected. "
1729 "Restarting 0x%X.\n", inta);
1730 priv->isr_stats.sw++;
1731 priv->isr_stats.sw_err = inta;
1732 iwl_irq_handle_error(priv);
1733 handled |= CSR_INT_BIT_SW_ERR;
1734 }
1735
1736 /* uCode wakes up after power-down sleep */
1737 if (inta & CSR_INT_BIT_WAKEUP) {
1738 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1739 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1740 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1741 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1742 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1743 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1744 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1745 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1746
1747 priv->isr_stats.wakeup++;
1748 handled |= CSR_INT_BIT_WAKEUP;
1749 }
1750
1751 /* All uCode command responses, including Tx command responses,
1752 * Rx "responses" (frame-received notification), and other
1753 * notifications from uCode come through here*/
1754 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1755 iwl3945_rx_handle(priv);
1756 priv->isr_stats.rx++;
1757 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1758 }
1759
1760 if (inta & CSR_INT_BIT_FH_TX) {
1761 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1762 priv->isr_stats.tx++;
1763
1764 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
1765 iwl_write_direct32(priv, FH39_TCSR_CREDIT
1766 (FH39_SRVC_CHNL), 0x0);
1767 handled |= CSR_INT_BIT_FH_TX;
1768 }
1769
1770 if (inta & ~handled) {
1771 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1772 priv->isr_stats.unhandled++;
1773 }
1774
1775 if (inta & ~priv->inta_mask) {
1776 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1777 inta & ~priv->inta_mask);
1778 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
1779 }
1780
1781 /* Re-enable all interrupts */
1782 /* only Re-enable if disabled by irq */
1783 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1784 iwl_enable_interrupts(priv);
1785
1786 #ifdef CONFIG_IWLWIFI_DEBUG
1787 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1788 inta = iwl_read32(priv, CSR_INT);
1789 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1790 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1791 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1792 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1793 }
1794 #endif
1795 }
1796
1797 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
1798 enum ieee80211_band band,
1799 u8 is_active, u8 n_probes,
1800 struct iwl3945_scan_channel *scan_ch)
1801 {
1802 struct ieee80211_channel *chan;
1803 const struct ieee80211_supported_band *sband;
1804 const struct iwl_channel_info *ch_info;
1805 u16 passive_dwell = 0;
1806 u16 active_dwell = 0;
1807 int added, i;
1808
1809 sband = iwl_get_hw_mode(priv, band);
1810 if (!sband)
1811 return 0;
1812
1813 active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
1814 passive_dwell = iwl_get_passive_dwell_time(priv, band);
1815
1816 if (passive_dwell <= active_dwell)
1817 passive_dwell = active_dwell + 1;
1818
1819 for (i = 0, added = 0; i < priv->scan_request->n_channels; i++) {
1820 chan = priv->scan_request->channels[i];
1821
1822 if (chan->band != band)
1823 continue;
1824
1825 scan_ch->channel = chan->hw_value;
1826
1827 ch_info = iwl_get_channel_info(priv, band, scan_ch->channel);
1828 if (!is_channel_valid(ch_info)) {
1829 IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n",
1830 scan_ch->channel);
1831 continue;
1832 }
1833
1834 scan_ch->active_dwell = cpu_to_le16(active_dwell);
1835 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
1836 /* If passive , set up for auto-switch
1837 * and use long active_dwell time.
1838 */
1839 if (!is_active || is_channel_passive(ch_info) ||
1840 (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
1841 scan_ch->type = 0; /* passive */
1842 if (IWL_UCODE_API(priv->ucode_ver) == 1)
1843 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
1844 } else {
1845 scan_ch->type = 1; /* active */
1846 }
1847
1848 /* Set direct probe bits. These may be used both for active
1849 * scan channels (probes gets sent right away),
1850 * or for passive channels (probes get se sent only after
1851 * hearing clear Rx packet).*/
1852 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
1853 if (n_probes)
1854 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1855 } else {
1856 /* uCode v1 does not allow setting direct probe bits on
1857 * passive channel. */
1858 if ((scan_ch->type & 1) && n_probes)
1859 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1860 }
1861
1862 /* Set txpower levels to defaults */
1863 scan_ch->tpc.dsp_atten = 110;
1864 /* scan_pwr_info->tpc.dsp_atten; */
1865
1866 /*scan_pwr_info->tpc.tx_gain; */
1867 if (band == IEEE80211_BAND_5GHZ)
1868 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
1869 else {
1870 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
1871 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
1872 * power level:
1873 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
1874 */
1875 }
1876
1877 IWL_DEBUG_SCAN(priv, "Scanning %d [%s %d]\n",
1878 scan_ch->channel,
1879 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
1880 (scan_ch->type & 1) ?
1881 active_dwell : passive_dwell);
1882
1883 scan_ch++;
1884 added++;
1885 }
1886
1887 IWL_DEBUG_SCAN(priv, "total channels to scan %d \n", added);
1888 return added;
1889 }
1890
1891 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
1892 struct ieee80211_rate *rates)
1893 {
1894 int i;
1895
1896 for (i = 0; i < IWL_RATE_COUNT; i++) {
1897 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
1898 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1899 rates[i].hw_value_short = i;
1900 rates[i].flags = 0;
1901 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
1902 /*
1903 * If CCK != 1M then set short preamble rate flag.
1904 */
1905 rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
1906 0 : IEEE80211_RATE_SHORT_PREAMBLE;
1907 }
1908 }
1909 }
1910
1911 /******************************************************************************
1912 *
1913 * uCode download functions
1914 *
1915 ******************************************************************************/
1916
1917 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
1918 {
1919 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1920 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1921 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1922 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1923 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1924 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1925 }
1926
1927 /**
1928 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
1929 * looking at all data.
1930 */
1931 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
1932 {
1933 u32 val;
1934 u32 save_len = len;
1935 int rc = 0;
1936 u32 errcnt;
1937
1938 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1939
1940 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1941 IWL39_RTC_INST_LOWER_BOUND);
1942
1943 errcnt = 0;
1944 for (; len > 0; len -= sizeof(u32), image++) {
1945 /* read data comes through single port, auto-incr addr */
1946 /* NOTE: Use the debugless read so we don't flood kernel log
1947 * if IWL_DL_IO is set */
1948 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1949 if (val != le32_to_cpu(*image)) {
1950 IWL_ERR(priv, "uCode INST section is invalid at "
1951 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1952 save_len - len, val, le32_to_cpu(*image));
1953 rc = -EIO;
1954 errcnt++;
1955 if (errcnt >= 20)
1956 break;
1957 }
1958 }
1959
1960
1961 if (!errcnt)
1962 IWL_DEBUG_INFO(priv,
1963 "ucode image in INSTRUCTION memory is good\n");
1964
1965 return rc;
1966 }
1967
1968
1969 /**
1970 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
1971 * using sample data 100 bytes apart. If these sample points are good,
1972 * it's a pretty good bet that everything between them is good, too.
1973 */
1974 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
1975 {
1976 u32 val;
1977 int rc = 0;
1978 u32 errcnt = 0;
1979 u32 i;
1980
1981 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1982
1983 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
1984 /* read data comes through single port, auto-incr addr */
1985 /* NOTE: Use the debugless read so we don't flood kernel log
1986 * if IWL_DL_IO is set */
1987 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1988 i + IWL39_RTC_INST_LOWER_BOUND);
1989 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1990 if (val != le32_to_cpu(*image)) {
1991 #if 0 /* Enable this if you want to see details */
1992 IWL_ERR(priv, "uCode INST section is invalid at "
1993 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1994 i, val, *image);
1995 #endif
1996 rc = -EIO;
1997 errcnt++;
1998 if (errcnt >= 3)
1999 break;
2000 }
2001 }
2002
2003 return rc;
2004 }
2005
2006
2007 /**
2008 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2009 * and verify its contents
2010 */
2011 static int iwl3945_verify_ucode(struct iwl_priv *priv)
2012 {
2013 __le32 *image;
2014 u32 len;
2015 int rc = 0;
2016
2017 /* Try bootstrap */
2018 image = (__le32 *)priv->ucode_boot.v_addr;
2019 len = priv->ucode_boot.len;
2020 rc = iwl3945_verify_inst_sparse(priv, image, len);
2021 if (rc == 0) {
2022 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2023 return 0;
2024 }
2025
2026 /* Try initialize */
2027 image = (__le32 *)priv->ucode_init.v_addr;
2028 len = priv->ucode_init.len;
2029 rc = iwl3945_verify_inst_sparse(priv, image, len);
2030 if (rc == 0) {
2031 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2032 return 0;
2033 }
2034
2035 /* Try runtime/protocol */
2036 image = (__le32 *)priv->ucode_code.v_addr;
2037 len = priv->ucode_code.len;
2038 rc = iwl3945_verify_inst_sparse(priv, image, len);
2039 if (rc == 0) {
2040 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2041 return 0;
2042 }
2043
2044 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2045
2046 /* Since nothing seems to match, show first several data entries in
2047 * instruction SRAM, so maybe visual inspection will give a clue.
2048 * Selection of bootstrap image (vs. other images) is arbitrary. */
2049 image = (__le32 *)priv->ucode_boot.v_addr;
2050 len = priv->ucode_boot.len;
2051 rc = iwl3945_verify_inst_full(priv, image, len);
2052
2053 return rc;
2054 }
2055
2056 static void iwl3945_nic_start(struct iwl_priv *priv)
2057 {
2058 /* Remove all resets to allow NIC to operate */
2059 iwl_write32(priv, CSR_RESET, 0);
2060 }
2061
2062 /**
2063 * iwl3945_read_ucode - Read uCode images from disk file.
2064 *
2065 * Copy into buffers for card to fetch via bus-mastering
2066 */
2067 static int iwl3945_read_ucode(struct iwl_priv *priv)
2068 {
2069 const struct iwl_ucode_header *ucode;
2070 int ret = -EINVAL, index;
2071 const struct firmware *ucode_raw;
2072 /* firmware file name contains uCode/driver compatibility version */
2073 const char *name_pre = priv->cfg->fw_name_pre;
2074 const unsigned int api_max = priv->cfg->ucode_api_max;
2075 const unsigned int api_min = priv->cfg->ucode_api_min;
2076 char buf[25];
2077 u8 *src;
2078 size_t len;
2079 u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
2080
2081 /* Ask kernel firmware_class module to get the boot firmware off disk.
2082 * request_firmware() is synchronous, file is in memory on return. */
2083 for (index = api_max; index >= api_min; index--) {
2084 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
2085 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
2086 if (ret < 0) {
2087 IWL_ERR(priv, "%s firmware file req failed: %d\n",
2088 buf, ret);
2089 if (ret == -ENOENT)
2090 continue;
2091 else
2092 goto error;
2093 } else {
2094 if (index < api_max)
2095 IWL_ERR(priv, "Loaded firmware %s, "
2096 "which is deprecated. "
2097 " Please use API v%u instead.\n",
2098 buf, api_max);
2099 IWL_DEBUG_INFO(priv, "Got firmware '%s' file "
2100 "(%zd bytes) from disk\n",
2101 buf, ucode_raw->size);
2102 break;
2103 }
2104 }
2105
2106 if (ret < 0)
2107 goto error;
2108
2109 /* Make sure that we got at least our header! */
2110 if (ucode_raw->size < priv->cfg->ops->ucode->get_header_size(1)) {
2111 IWL_ERR(priv, "File size way too small!\n");
2112 ret = -EINVAL;
2113 goto err_release;
2114 }
2115
2116 /* Data from ucode file: header followed by uCode images */
2117 ucode = (struct iwl_ucode_header *)ucode_raw->data;
2118
2119 priv->ucode_ver = le32_to_cpu(ucode->ver);
2120 api_ver = IWL_UCODE_API(priv->ucode_ver);
2121 inst_size = priv->cfg->ops->ucode->get_inst_size(ucode, api_ver);
2122 data_size = priv->cfg->ops->ucode->get_data_size(ucode, api_ver);
2123 init_size = priv->cfg->ops->ucode->get_init_size(ucode, api_ver);
2124 init_data_size =
2125 priv->cfg->ops->ucode->get_init_data_size(ucode, api_ver);
2126 boot_size = priv->cfg->ops->ucode->get_boot_size(ucode, api_ver);
2127 src = priv->cfg->ops->ucode->get_data(ucode, api_ver);
2128
2129 /* api_ver should match the api version forming part of the
2130 * firmware filename ... but we don't check for that and only rely
2131 * on the API version read from firmware header from here on forward */
2132
2133 if (api_ver < api_min || api_ver > api_max) {
2134 IWL_ERR(priv, "Driver unable to support your firmware API. "
2135 "Driver supports v%u, firmware is v%u.\n",
2136 api_max, api_ver);
2137 priv->ucode_ver = 0;
2138 ret = -EINVAL;
2139 goto err_release;
2140 }
2141 if (api_ver != api_max)
2142 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
2143 "got %u. New firmware can be obtained "
2144 "from http://www.intellinuxwireless.org.\n",
2145 api_max, api_ver);
2146
2147 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
2148 IWL_UCODE_MAJOR(priv->ucode_ver),
2149 IWL_UCODE_MINOR(priv->ucode_ver),
2150 IWL_UCODE_API(priv->ucode_ver),
2151 IWL_UCODE_SERIAL(priv->ucode_ver));
2152
2153 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2154 priv->ucode_ver);
2155 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
2156 inst_size);
2157 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
2158 data_size);
2159 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
2160 init_size);
2161 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
2162 init_data_size);
2163 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
2164 boot_size);
2165
2166
2167 /* Verify size of file vs. image size info in file's header */
2168 if (ucode_raw->size != priv->cfg->ops->ucode->get_header_size(api_ver) +
2169 inst_size + data_size + init_size +
2170 init_data_size + boot_size) {
2171
2172 IWL_DEBUG_INFO(priv,
2173 "uCode file size %zd does not match expected size\n",
2174 ucode_raw->size);
2175 ret = -EINVAL;
2176 goto err_release;
2177 }
2178
2179 /* Verify that uCode images will fit in card's SRAM */
2180 if (inst_size > IWL39_MAX_INST_SIZE) {
2181 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
2182 inst_size);
2183 ret = -EINVAL;
2184 goto err_release;
2185 }
2186
2187 if (data_size > IWL39_MAX_DATA_SIZE) {
2188 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
2189 data_size);
2190 ret = -EINVAL;
2191 goto err_release;
2192 }
2193 if (init_size > IWL39_MAX_INST_SIZE) {
2194 IWL_DEBUG_INFO(priv,
2195 "uCode init instr len %d too large to fit in\n",
2196 init_size);
2197 ret = -EINVAL;
2198 goto err_release;
2199 }
2200 if (init_data_size > IWL39_MAX_DATA_SIZE) {
2201 IWL_DEBUG_INFO(priv,
2202 "uCode init data len %d too large to fit in\n",
2203 init_data_size);
2204 ret = -EINVAL;
2205 goto err_release;
2206 }
2207 if (boot_size > IWL39_MAX_BSM_SIZE) {
2208 IWL_DEBUG_INFO(priv,
2209 "uCode boot instr len %d too large to fit in\n",
2210 boot_size);
2211 ret = -EINVAL;
2212 goto err_release;
2213 }
2214
2215 /* Allocate ucode buffers for card's bus-master loading ... */
2216
2217 /* Runtime instructions and 2 copies of data:
2218 * 1) unmodified from disk
2219 * 2) backup cache for save/restore during power-downs */
2220 priv->ucode_code.len = inst_size;
2221 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2222
2223 priv->ucode_data.len = data_size;
2224 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2225
2226 priv->ucode_data_backup.len = data_size;
2227 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2228
2229 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2230 !priv->ucode_data_backup.v_addr)
2231 goto err_pci_alloc;
2232
2233 /* Initialization instructions and data */
2234 if (init_size && init_data_size) {
2235 priv->ucode_init.len = init_size;
2236 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2237
2238 priv->ucode_init_data.len = init_data_size;
2239 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2240
2241 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2242 goto err_pci_alloc;
2243 }
2244
2245 /* Bootstrap (instructions only, no data) */
2246 if (boot_size) {
2247 priv->ucode_boot.len = boot_size;
2248 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2249
2250 if (!priv->ucode_boot.v_addr)
2251 goto err_pci_alloc;
2252 }
2253
2254 /* Copy images into buffers for card's bus-master reads ... */
2255
2256 /* Runtime instructions (first block of data in file) */
2257 len = inst_size;
2258 IWL_DEBUG_INFO(priv,
2259 "Copying (but not loading) uCode instr len %zd\n", len);
2260 memcpy(priv->ucode_code.v_addr, src, len);
2261 src += len;
2262
2263 IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2264 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2265
2266 /* Runtime data (2nd block)
2267 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
2268 len = data_size;
2269 IWL_DEBUG_INFO(priv,
2270 "Copying (but not loading) uCode data len %zd\n", len);
2271 memcpy(priv->ucode_data.v_addr, src, len);
2272 memcpy(priv->ucode_data_backup.v_addr, src, len);
2273 src += len;
2274
2275 /* Initialization instructions (3rd block) */
2276 if (init_size) {
2277 len = init_size;
2278 IWL_DEBUG_INFO(priv,
2279 "Copying (but not loading) init instr len %zd\n", len);
2280 memcpy(priv->ucode_init.v_addr, src, len);
2281 src += len;
2282 }
2283
2284 /* Initialization data (4th block) */
2285 if (init_data_size) {
2286 len = init_data_size;
2287 IWL_DEBUG_INFO(priv,
2288 "Copying (but not loading) init data len %zd\n", len);
2289 memcpy(priv->ucode_init_data.v_addr, src, len);
2290 src += len;
2291 }
2292
2293 /* Bootstrap instructions (5th block) */
2294 len = boot_size;
2295 IWL_DEBUG_INFO(priv,
2296 "Copying (but not loading) boot instr len %zd\n", len);
2297 memcpy(priv->ucode_boot.v_addr, src, len);
2298
2299 /* We have our copies now, allow OS release its copies */
2300 release_firmware(ucode_raw);
2301 return 0;
2302
2303 err_pci_alloc:
2304 IWL_ERR(priv, "failed to allocate pci memory\n");
2305 ret = -ENOMEM;
2306 iwl3945_dealloc_ucode_pci(priv);
2307
2308 err_release:
2309 release_firmware(ucode_raw);
2310
2311 error:
2312 return ret;
2313 }
2314
2315
2316 /**
2317 * iwl3945_set_ucode_ptrs - Set uCode address location
2318 *
2319 * Tell initialization uCode where to find runtime uCode.
2320 *
2321 * BSM registers initially contain pointers to initialization uCode.
2322 * We need to replace them to load runtime uCode inst and data,
2323 * and to save runtime data when powering down.
2324 */
2325 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
2326 {
2327 dma_addr_t pinst;
2328 dma_addr_t pdata;
2329
2330 /* bits 31:0 for 3945 */
2331 pinst = priv->ucode_code.p_addr;
2332 pdata = priv->ucode_data_backup.p_addr;
2333
2334 /* Tell bootstrap uCode where to find image to load */
2335 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2336 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2337 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
2338 priv->ucode_data.len);
2339
2340 /* Inst byte count must be last to set up, bit 31 signals uCode
2341 * that all new ptr/size info is in place */
2342 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
2343 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
2344
2345 IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
2346
2347 return 0;
2348 }
2349
2350 /**
2351 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2352 *
2353 * Called after REPLY_ALIVE notification received from "initialize" uCode.
2354 *
2355 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2356 */
2357 static void iwl3945_init_alive_start(struct iwl_priv *priv)
2358 {
2359 /* Check alive response for "valid" sign from uCode */
2360 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
2361 /* We had an error bringing up the hardware, so take it
2362 * all the way back down so we can try again */
2363 IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n");
2364 goto restart;
2365 }
2366
2367 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2368 * This is a paranoid check, because we would not have gotten the
2369 * "initialize" alive if code weren't properly loaded. */
2370 if (iwl3945_verify_ucode(priv)) {
2371 /* Runtime instruction load was bad;
2372 * take it all the way back down so we can try again */
2373 IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
2374 goto restart;
2375 }
2376
2377 /* Send pointers to protocol/runtime uCode image ... init code will
2378 * load and launch runtime uCode, which will send us another "Alive"
2379 * notification. */
2380 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
2381 if (iwl3945_set_ucode_ptrs(priv)) {
2382 /* Runtime instruction load won't happen;
2383 * take it all the way back down so we can try again */
2384 IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
2385 goto restart;
2386 }
2387 return;
2388
2389 restart:
2390 queue_work(priv->workqueue, &priv->restart);
2391 }
2392
2393 /**
2394 * iwl3945_alive_start - called after REPLY_ALIVE notification received
2395 * from protocol/runtime uCode (initialization uCode's
2396 * Alive gets handled by iwl3945_init_alive_start()).
2397 */
2398 static void iwl3945_alive_start(struct iwl_priv *priv)
2399 {
2400 int thermal_spin = 0;
2401 u32 rfkill;
2402
2403 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2404
2405 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2406 /* We had an error bringing up the hardware, so take it
2407 * all the way back down so we can try again */
2408 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2409 goto restart;
2410 }
2411
2412 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2413 * This is a paranoid check, because we would not have gotten the
2414 * "runtime" alive if code weren't properly loaded. */
2415 if (iwl3945_verify_ucode(priv)) {
2416 /* Runtime instruction load was bad;
2417 * take it all the way back down so we can try again */
2418 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2419 goto restart;
2420 }
2421
2422 iwl_clear_stations_table(priv);
2423
2424 rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
2425 IWL_DEBUG_INFO(priv, "RFKILL status: 0x%x\n", rfkill);
2426
2427 if (rfkill & 0x1) {
2428 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2429 /* if RFKILL is not on, then wait for thermal
2430 * sensor in adapter to kick in */
2431 while (iwl3945_hw_get_temperature(priv) == 0) {
2432 thermal_spin++;
2433 udelay(10);
2434 }
2435
2436 if (thermal_spin)
2437 IWL_DEBUG_INFO(priv, "Thermal calibration took %dus\n",
2438 thermal_spin * 10);
2439 } else
2440 set_bit(STATUS_RF_KILL_HW, &priv->status);
2441
2442 /* After the ALIVE response, we can send commands to 3945 uCode */
2443 set_bit(STATUS_ALIVE, &priv->status);
2444
2445 if (iwl_is_rfkill(priv))
2446 return;
2447
2448 ieee80211_wake_queues(priv->hw);
2449
2450 priv->active_rate = priv->rates_mask;
2451 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2452
2453 iwl_power_update_mode(priv, false);
2454
2455 if (iwl_is_associated(priv)) {
2456 struct iwl3945_rxon_cmd *active_rxon =
2457 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
2458
2459 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2460 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2461 } else {
2462 /* Initialize our rx_config data */
2463 iwl_connection_init_rx_config(priv, priv->iw_mode);
2464 }
2465
2466 /* Configure Bluetooth device coexistence support */
2467 iwl_send_bt_config(priv);
2468
2469 /* Configure the adapter for unassociated operation */
2470 iwlcore_commit_rxon(priv);
2471
2472 iwl3945_reg_txpower_periodic(priv);
2473
2474 iwl_leds_init(priv);
2475
2476 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2477 set_bit(STATUS_READY, &priv->status);
2478 wake_up_interruptible(&priv->wait_command_queue);
2479
2480 /* reassociate for ADHOC mode */
2481 if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
2482 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
2483 priv->vif);
2484 if (beacon)
2485 iwl_mac_beacon_update(priv->hw, beacon);
2486 }
2487
2488 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2489 iwl_set_mode(priv, priv->iw_mode);
2490
2491 return;
2492
2493 restart:
2494 queue_work(priv->workqueue, &priv->restart);
2495 }
2496
2497 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
2498
2499 static void __iwl3945_down(struct iwl_priv *priv)
2500 {
2501 unsigned long flags;
2502 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2503 struct ieee80211_conf *conf = NULL;
2504
2505 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2506
2507 conf = ieee80211_get_hw_conf(priv->hw);
2508
2509 if (!exit_pending)
2510 set_bit(STATUS_EXIT_PENDING, &priv->status);
2511
2512 iwl_clear_stations_table(priv);
2513
2514 /* Unblock any waiting calls */
2515 wake_up_interruptible_all(&priv->wait_command_queue);
2516
2517 /* Wipe out the EXIT_PENDING status bit if we are not actually
2518 * exiting the module */
2519 if (!exit_pending)
2520 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2521
2522 /* stop and reset the on-board processor */
2523 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2524
2525 /* tell the device to stop sending interrupts */
2526 spin_lock_irqsave(&priv->lock, flags);
2527 iwl_disable_interrupts(priv);
2528 spin_unlock_irqrestore(&priv->lock, flags);
2529 iwl_synchronize_irq(priv);
2530
2531 if (priv->mac80211_registered)
2532 ieee80211_stop_queues(priv->hw);
2533
2534 /* If we have not previously called iwl3945_init() then
2535 * clear all bits but the RF Kill bits and return */
2536 if (!iwl_is_init(priv)) {
2537 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2538 STATUS_RF_KILL_HW |
2539 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2540 STATUS_GEO_CONFIGURED |
2541 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2542 STATUS_EXIT_PENDING;
2543 goto exit;
2544 }
2545
2546 /* ...otherwise clear out all the status bits but the RF Kill
2547 * bit and continue taking the NIC down. */
2548 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2549 STATUS_RF_KILL_HW |
2550 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2551 STATUS_GEO_CONFIGURED |
2552 test_bit(STATUS_FW_ERROR, &priv->status) <<
2553 STATUS_FW_ERROR |
2554 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2555 STATUS_EXIT_PENDING;
2556
2557 iwl3945_hw_txq_ctx_stop(priv);
2558 iwl3945_hw_rxq_stop(priv);
2559
2560 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2561 APMG_CLK_VAL_DMA_CLK_RQT);
2562
2563 udelay(5);
2564
2565 /* Stop the device, and put it in low power state */
2566 priv->cfg->ops->lib->apm_ops.stop(priv);
2567
2568 exit:
2569 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2570
2571 if (priv->ibss_beacon)
2572 dev_kfree_skb(priv->ibss_beacon);
2573 priv->ibss_beacon = NULL;
2574
2575 /* clear out any free frames */
2576 iwl3945_clear_free_frames(priv);
2577 }
2578
2579 static void iwl3945_down(struct iwl_priv *priv)
2580 {
2581 mutex_lock(&priv->mutex);
2582 __iwl3945_down(priv);
2583 mutex_unlock(&priv->mutex);
2584
2585 iwl3945_cancel_deferred_work(priv);
2586 }
2587
2588 #define MAX_HW_RESTARTS 5
2589
2590 static int __iwl3945_up(struct iwl_priv *priv)
2591 {
2592 int rc, i;
2593
2594 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2595 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2596 return -EIO;
2597 }
2598
2599 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2600 IWL_ERR(priv, "ucode not available for device bring up\n");
2601 return -EIO;
2602 }
2603
2604 /* If platform's RF_KILL switch is NOT set to KILL */
2605 if (iwl_read32(priv, CSR_GP_CNTRL) &
2606 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2607 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2608 else {
2609 set_bit(STATUS_RF_KILL_HW, &priv->status);
2610 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2611 return -ENODEV;
2612 }
2613
2614 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2615
2616 rc = iwl3945_hw_nic_init(priv);
2617 if (rc) {
2618 IWL_ERR(priv, "Unable to int nic\n");
2619 return rc;
2620 }
2621
2622 /* make sure rfkill handshake bits are cleared */
2623 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2624 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2625 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2626
2627 /* clear (again), then enable host interrupts */
2628 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2629 iwl_enable_interrupts(priv);
2630
2631 /* really make sure rfkill handshake bits are cleared */
2632 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2633 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2634
2635 /* Copy original ucode data image from disk into backup cache.
2636 * This will be used to initialize the on-board processor's
2637 * data SRAM for a clean start when the runtime program first loads. */
2638 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2639 priv->ucode_data.len);
2640
2641 /* We return success when we resume from suspend and rf_kill is on. */
2642 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
2643 return 0;
2644
2645 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2646
2647 iwl_clear_stations_table(priv);
2648
2649 /* load bootstrap state machine,
2650 * load bootstrap program into processor's memory,
2651 * prepare to load the "initialize" uCode */
2652 priv->cfg->ops->lib->load_ucode(priv);
2653
2654 if (rc) {
2655 IWL_ERR(priv,
2656 "Unable to set up bootstrap uCode: %d\n", rc);
2657 continue;
2658 }
2659
2660 /* start card; "initialize" will load runtime ucode */
2661 iwl3945_nic_start(priv);
2662
2663 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2664
2665 return 0;
2666 }
2667
2668 set_bit(STATUS_EXIT_PENDING, &priv->status);
2669 __iwl3945_down(priv);
2670 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2671
2672 /* tried to restart and config the device for as long as our
2673 * patience could withstand */
2674 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2675 return -EIO;
2676 }
2677
2678
2679 /*****************************************************************************
2680 *
2681 * Workqueue callbacks
2682 *
2683 *****************************************************************************/
2684
2685 static void iwl3945_bg_init_alive_start(struct work_struct *data)
2686 {
2687 struct iwl_priv *priv =
2688 container_of(data, struct iwl_priv, init_alive_start.work);
2689
2690 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2691 return;
2692
2693 mutex_lock(&priv->mutex);
2694 iwl3945_init_alive_start(priv);
2695 mutex_unlock(&priv->mutex);
2696 }
2697
2698 static void iwl3945_bg_alive_start(struct work_struct *data)
2699 {
2700 struct iwl_priv *priv =
2701 container_of(data, struct iwl_priv, alive_start.work);
2702
2703 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2704 return;
2705
2706 mutex_lock(&priv->mutex);
2707 iwl3945_alive_start(priv);
2708 mutex_unlock(&priv->mutex);
2709 }
2710
2711 /*
2712 * 3945 cannot interrupt driver when hardware rf kill switch toggles;
2713 * driver must poll CSR_GP_CNTRL_REG register for change. This register
2714 * *is* readable even when device has been SW_RESET into low power mode
2715 * (e.g. during RF KILL).
2716 */
2717 static void iwl3945_rfkill_poll(struct work_struct *data)
2718 {
2719 struct iwl_priv *priv =
2720 container_of(data, struct iwl_priv, rfkill_poll.work);
2721 bool old_rfkill = test_bit(STATUS_RF_KILL_HW, &priv->status);
2722 bool new_rfkill = !(iwl_read32(priv, CSR_GP_CNTRL)
2723 & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW);
2724
2725 if (new_rfkill != old_rfkill) {
2726 if (new_rfkill)
2727 set_bit(STATUS_RF_KILL_HW, &priv->status);
2728 else
2729 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2730
2731 wiphy_rfkill_set_hw_state(priv->hw->wiphy, new_rfkill);
2732
2733 IWL_DEBUG_RF_KILL(priv, "RF_KILL bit toggled to %s.\n",
2734 new_rfkill ? "disable radio" : "enable radio");
2735 }
2736
2737 /* Keep this running, even if radio now enabled. This will be
2738 * cancelled in mac_start() if system decides to start again */
2739 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
2740 round_jiffies_relative(2 * HZ));
2741
2742 }
2743
2744 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
2745 static void iwl3945_bg_request_scan(struct work_struct *data)
2746 {
2747 struct iwl_priv *priv =
2748 container_of(data, struct iwl_priv, request_scan);
2749 struct iwl_host_cmd cmd = {
2750 .id = REPLY_SCAN_CMD,
2751 .len = sizeof(struct iwl3945_scan_cmd),
2752 .flags = CMD_SIZE_HUGE,
2753 };
2754 int rc = 0;
2755 struct iwl3945_scan_cmd *scan;
2756 struct ieee80211_conf *conf = NULL;
2757 u8 n_probes = 0;
2758 enum ieee80211_band band;
2759 bool is_active = false;
2760
2761 conf = ieee80211_get_hw_conf(priv->hw);
2762
2763 mutex_lock(&priv->mutex);
2764
2765 cancel_delayed_work(&priv->scan_check);
2766
2767 if (!iwl_is_ready(priv)) {
2768 IWL_WARN(priv, "request scan called when driver not ready.\n");
2769 goto done;
2770 }
2771
2772 /* Make sure the scan wasn't canceled before this queued work
2773 * was given the chance to run... */
2774 if (!test_bit(STATUS_SCANNING, &priv->status))
2775 goto done;
2776
2777 /* This should never be called or scheduled if there is currently
2778 * a scan active in the hardware. */
2779 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
2780 IWL_DEBUG_INFO(priv, "Multiple concurrent scan requests "
2781 "Ignoring second request.\n");
2782 rc = -EIO;
2783 goto done;
2784 }
2785
2786 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2787 IWL_DEBUG_SCAN(priv, "Aborting scan due to device shutdown\n");
2788 goto done;
2789 }
2790
2791 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2792 IWL_DEBUG_HC(priv,
2793 "Scan request while abort pending. Queuing.\n");
2794 goto done;
2795 }
2796
2797 if (iwl_is_rfkill(priv)) {
2798 IWL_DEBUG_HC(priv, "Aborting scan due to RF Kill activation\n");
2799 goto done;
2800 }
2801
2802 if (!test_bit(STATUS_READY, &priv->status)) {
2803 IWL_DEBUG_HC(priv,
2804 "Scan request while uninitialized. Queuing.\n");
2805 goto done;
2806 }
2807
2808 if (!priv->scan_bands) {
2809 IWL_DEBUG_HC(priv, "Aborting scan due to no requested bands\n");
2810 goto done;
2811 }
2812
2813 if (!priv->scan) {
2814 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
2815 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
2816 if (!priv->scan) {
2817 rc = -ENOMEM;
2818 goto done;
2819 }
2820 }
2821 scan = priv->scan;
2822 memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
2823
2824 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
2825 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
2826
2827 if (iwl_is_associated(priv)) {
2828 u16 interval = 0;
2829 u32 extra;
2830 u32 suspend_time = 100;
2831 u32 scan_suspend_time = 100;
2832 unsigned long flags;
2833
2834 IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
2835
2836 spin_lock_irqsave(&priv->lock, flags);
2837 interval = priv->beacon_int;
2838 spin_unlock_irqrestore(&priv->lock, flags);
2839
2840 scan->suspend_time = 0;
2841 scan->max_out_time = cpu_to_le32(200 * 1024);
2842 if (!interval)
2843 interval = suspend_time;
2844 /*
2845 * suspend time format:
2846 * 0-19: beacon interval in usec (time before exec.)
2847 * 20-23: 0
2848 * 24-31: number of beacons (suspend between channels)
2849 */
2850
2851 extra = (suspend_time / interval) << 24;
2852 scan_suspend_time = 0xFF0FFFFF &
2853 (extra | ((suspend_time % interval) * 1024));
2854
2855 scan->suspend_time = cpu_to_le32(scan_suspend_time);
2856 IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
2857 scan_suspend_time, interval);
2858 }
2859
2860 if (priv->scan_request->n_ssids) {
2861 int i, p = 0;
2862 IWL_DEBUG_SCAN(priv, "Kicking off active scan\n");
2863 for (i = 0; i < priv->scan_request->n_ssids; i++) {
2864 /* always does wildcard anyway */
2865 if (!priv->scan_request->ssids[i].ssid_len)
2866 continue;
2867 scan->direct_scan[p].id = WLAN_EID_SSID;
2868 scan->direct_scan[p].len =
2869 priv->scan_request->ssids[i].ssid_len;
2870 memcpy(scan->direct_scan[p].ssid,
2871 priv->scan_request->ssids[i].ssid,
2872 priv->scan_request->ssids[i].ssid_len);
2873 n_probes++;
2874 p++;
2875 }
2876 is_active = true;
2877 } else
2878 IWL_DEBUG_SCAN(priv, "Kicking off passive scan.\n");
2879
2880 /* We don't build a direct scan probe request; the uCode will do
2881 * that based on the direct_mask added to each channel entry */
2882 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
2883 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
2884 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2885
2886 /* flags + rate selection */
2887
2888 if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
2889 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
2890 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
2891 scan->good_CRC_th = 0;
2892 band = IEEE80211_BAND_2GHZ;
2893 } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
2894 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
2895 /*
2896 * If active scaning is requested but a certain channel
2897 * is marked passive, we can do active scanning if we
2898 * detect transmissions.
2899 */
2900 scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH : 0;
2901 band = IEEE80211_BAND_5GHZ;
2902 } else {
2903 IWL_WARN(priv, "Invalid scan band count\n");
2904 goto done;
2905 }
2906
2907 scan->tx_cmd.len = cpu_to_le16(
2908 iwl_fill_probe_req(priv,
2909 (struct ieee80211_mgmt *)scan->data,
2910 priv->scan_request->ie,
2911 priv->scan_request->ie_len,
2912 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
2913
2914 /* select Rx antennas */
2915 scan->flags |= iwl3945_get_antenna_flags(priv);
2916
2917 if (iwl_is_monitor_mode(priv))
2918 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
2919
2920 scan->channel_count =
2921 iwl3945_get_channels_for_scan(priv, band, is_active, n_probes,
2922 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
2923
2924 if (scan->channel_count == 0) {
2925 IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
2926 goto done;
2927 }
2928
2929 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
2930 scan->channel_count * sizeof(struct iwl3945_scan_channel);
2931 cmd.data = scan;
2932 scan->len = cpu_to_le16(cmd.len);
2933
2934 set_bit(STATUS_SCAN_HW, &priv->status);
2935 rc = iwl_send_cmd_sync(priv, &cmd);
2936 if (rc)
2937 goto done;
2938
2939 queue_delayed_work(priv->workqueue, &priv->scan_check,
2940 IWL_SCAN_CHECK_WATCHDOG);
2941
2942 mutex_unlock(&priv->mutex);
2943 return;
2944
2945 done:
2946 /* can not perform scan make sure we clear scanning
2947 * bits from status so next scan request can be performed.
2948 * if we dont clear scanning status bit here all next scan
2949 * will fail
2950 */
2951 clear_bit(STATUS_SCAN_HW, &priv->status);
2952 clear_bit(STATUS_SCANNING, &priv->status);
2953
2954 /* inform mac80211 scan aborted */
2955 queue_work(priv->workqueue, &priv->scan_completed);
2956 mutex_unlock(&priv->mutex);
2957 }
2958
2959 static void iwl3945_bg_up(struct work_struct *data)
2960 {
2961 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2962
2963 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2964 return;
2965
2966 mutex_lock(&priv->mutex);
2967 __iwl3945_up(priv);
2968 mutex_unlock(&priv->mutex);
2969 }
2970
2971 static void iwl3945_bg_restart(struct work_struct *data)
2972 {
2973 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2974
2975 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2976 return;
2977
2978 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
2979 mutex_lock(&priv->mutex);
2980 priv->vif = NULL;
2981 priv->is_open = 0;
2982 mutex_unlock(&priv->mutex);
2983 iwl3945_down(priv);
2984 ieee80211_restart_hw(priv->hw);
2985 } else {
2986 iwl3945_down(priv);
2987 queue_work(priv->workqueue, &priv->up);
2988 }
2989 }
2990
2991 static void iwl3945_bg_rx_replenish(struct work_struct *data)
2992 {
2993 struct iwl_priv *priv =
2994 container_of(data, struct iwl_priv, rx_replenish);
2995
2996 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2997 return;
2998
2999 mutex_lock(&priv->mutex);
3000 iwl3945_rx_replenish(priv);
3001 mutex_unlock(&priv->mutex);
3002 }
3003
3004 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3005
3006 void iwl3945_post_associate(struct iwl_priv *priv)
3007 {
3008 int rc = 0;
3009 struct ieee80211_conf *conf = NULL;
3010
3011 if (priv->iw_mode == NL80211_IFTYPE_AP) {
3012 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
3013 return;
3014 }
3015
3016
3017 IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3018 priv->assoc_id, priv->active_rxon.bssid_addr);
3019
3020 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3021 return;
3022
3023 if (!priv->vif || !priv->is_open)
3024 return;
3025
3026 iwl_scan_cancel_timeout(priv, 200);
3027
3028 conf = ieee80211_get_hw_conf(priv->hw);
3029
3030 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3031 iwlcore_commit_rxon(priv);
3032
3033 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3034 iwl_setup_rxon_timing(priv);
3035 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3036 sizeof(priv->rxon_timing), &priv->rxon_timing);
3037 if (rc)
3038 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3039 "Attempting to continue.\n");
3040
3041 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3042
3043 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3044
3045 IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3046 priv->assoc_id, priv->beacon_int);
3047
3048 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3049 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3050 else
3051 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3052
3053 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3054 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3055 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3056 else
3057 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3058
3059 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3060 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3061
3062 }
3063
3064 iwlcore_commit_rxon(priv);
3065
3066 switch (priv->iw_mode) {
3067 case NL80211_IFTYPE_STATION:
3068 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
3069 break;
3070
3071 case NL80211_IFTYPE_ADHOC:
3072
3073 priv->assoc_id = 1;
3074 iwl_add_station(priv, priv->bssid, 0, CMD_SYNC, NULL);
3075 iwl3945_sync_sta(priv, IWL_STA_ID,
3076 (priv->band == IEEE80211_BAND_5GHZ) ?
3077 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
3078 CMD_ASYNC);
3079 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
3080 iwl3945_send_beacon_cmd(priv);
3081
3082 break;
3083
3084 default:
3085 IWL_ERR(priv, "%s Should not be called in %d mode\n",
3086 __func__, priv->iw_mode);
3087 break;
3088 }
3089
3090 iwl_activate_qos(priv, 0);
3091
3092 /* we have just associated, don't start scan too early */
3093 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
3094 }
3095
3096 /*****************************************************************************
3097 *
3098 * mac80211 entry point functions
3099 *
3100 *****************************************************************************/
3101
3102 #define UCODE_READY_TIMEOUT (2 * HZ)
3103
3104 static int iwl3945_mac_start(struct ieee80211_hw *hw)
3105 {
3106 struct iwl_priv *priv = hw->priv;
3107 int ret;
3108
3109 IWL_DEBUG_MAC80211(priv, "enter\n");
3110
3111 /* we should be verifying the device is ready to be opened */
3112 mutex_lock(&priv->mutex);
3113
3114 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3115 * ucode filename and max sizes are card-specific. */
3116
3117 if (!priv->ucode_code.len) {
3118 ret = iwl3945_read_ucode(priv);
3119 if (ret) {
3120 IWL_ERR(priv, "Could not read microcode: %d\n", ret);
3121 mutex_unlock(&priv->mutex);
3122 goto out_release_irq;
3123 }
3124 }
3125
3126 ret = __iwl3945_up(priv);
3127
3128 mutex_unlock(&priv->mutex);
3129
3130 if (ret)
3131 goto out_release_irq;
3132
3133 IWL_DEBUG_INFO(priv, "Start UP work.\n");
3134
3135 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3136 * mac80211 will not be run successfully. */
3137 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3138 test_bit(STATUS_READY, &priv->status),
3139 UCODE_READY_TIMEOUT);
3140 if (!ret) {
3141 if (!test_bit(STATUS_READY, &priv->status)) {
3142 IWL_ERR(priv,
3143 "Wait for START_ALIVE timeout after %dms.\n",
3144 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3145 ret = -ETIMEDOUT;
3146 goto out_release_irq;
3147 }
3148 }
3149
3150 /* ucode is running and will send rfkill notifications,
3151 * no need to poll the killswitch state anymore */
3152 cancel_delayed_work(&priv->rfkill_poll);
3153
3154 iwl_led_start(priv);
3155
3156 priv->is_open = 1;
3157 IWL_DEBUG_MAC80211(priv, "leave\n");
3158 return 0;
3159
3160 out_release_irq:
3161 priv->is_open = 0;
3162 IWL_DEBUG_MAC80211(priv, "leave - failed\n");
3163 return ret;
3164 }
3165
3166 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
3167 {
3168 struct iwl_priv *priv = hw->priv;
3169
3170 IWL_DEBUG_MAC80211(priv, "enter\n");
3171
3172 if (!priv->is_open) {
3173 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
3174 return;
3175 }
3176
3177 priv->is_open = 0;
3178
3179 if (iwl_is_ready_rf(priv)) {
3180 /* stop mac, cancel any scan request and clear
3181 * RXON_FILTER_ASSOC_MSK BIT
3182 */
3183 mutex_lock(&priv->mutex);
3184 iwl_scan_cancel_timeout(priv, 100);
3185 mutex_unlock(&priv->mutex);
3186 }
3187
3188 iwl3945_down(priv);
3189
3190 flush_workqueue(priv->workqueue);
3191
3192 /* start polling the killswitch state again */
3193 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
3194 round_jiffies_relative(2 * HZ));
3195
3196 IWL_DEBUG_MAC80211(priv, "leave\n");
3197 }
3198
3199 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3200 {
3201 struct iwl_priv *priv = hw->priv;
3202
3203 IWL_DEBUG_MAC80211(priv, "enter\n");
3204
3205 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3206 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3207
3208 if (iwl3945_tx_skb(priv, skb))
3209 dev_kfree_skb_any(skb);
3210
3211 IWL_DEBUG_MAC80211(priv, "leave\n");
3212 return NETDEV_TX_OK;
3213 }
3214
3215 void iwl3945_config_ap(struct iwl_priv *priv)
3216 {
3217 int rc = 0;
3218
3219 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3220 return;
3221
3222 /* The following should be done only at AP bring up */
3223 if (!(iwl_is_associated(priv))) {
3224
3225 /* RXON - unassoc (to set timing command) */
3226 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3227 iwlcore_commit_rxon(priv);
3228
3229 /* RXON Timing */
3230 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3231 iwl_setup_rxon_timing(priv);
3232 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3233 sizeof(priv->rxon_timing),
3234 &priv->rxon_timing);
3235 if (rc)
3236 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3237 "Attempting to continue.\n");
3238
3239 /* FIXME: what should be the assoc_id for AP? */
3240 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3241 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3242 priv->staging_rxon.flags |=
3243 RXON_FLG_SHORT_PREAMBLE_MSK;
3244 else
3245 priv->staging_rxon.flags &=
3246 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3247
3248 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3249 if (priv->assoc_capability &
3250 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3251 priv->staging_rxon.flags |=
3252 RXON_FLG_SHORT_SLOT_MSK;
3253 else
3254 priv->staging_rxon.flags &=
3255 ~RXON_FLG_SHORT_SLOT_MSK;
3256
3257 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3258 priv->staging_rxon.flags &=
3259 ~RXON_FLG_SHORT_SLOT_MSK;
3260 }
3261 /* restore RXON assoc */
3262 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3263 iwlcore_commit_rxon(priv);
3264 iwl_add_station(priv, iwl_bcast_addr, 0, CMD_SYNC, NULL);
3265 }
3266 iwl3945_send_beacon_cmd(priv);
3267
3268 /* FIXME - we need to add code here to detect a totally new
3269 * configuration, reset the AP, unassoc, rxon timing, assoc,
3270 * clear sta table, add BCAST sta... */
3271 }
3272
3273 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3274 struct ieee80211_vif *vif,
3275 struct ieee80211_sta *sta,
3276 struct ieee80211_key_conf *key)
3277 {
3278 struct iwl_priv *priv = hw->priv;
3279 const u8 *addr;
3280 int ret = 0;
3281 u8 sta_id = IWL_INVALID_STATION;
3282 u8 static_key;
3283
3284 IWL_DEBUG_MAC80211(priv, "enter\n");
3285
3286 if (iwl3945_mod_params.sw_crypto) {
3287 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
3288 return -EOPNOTSUPP;
3289 }
3290
3291 addr = sta ? sta->addr : iwl_bcast_addr;
3292 static_key = !iwl_is_associated(priv);
3293
3294 if (!static_key) {
3295 sta_id = iwl_find_station(priv, addr);
3296 if (sta_id == IWL_INVALID_STATION) {
3297 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
3298 addr);
3299 return -EINVAL;
3300 }
3301 }
3302
3303 mutex_lock(&priv->mutex);
3304 iwl_scan_cancel_timeout(priv, 100);
3305 mutex_unlock(&priv->mutex);
3306
3307 switch (cmd) {
3308 case SET_KEY:
3309 if (static_key)
3310 ret = iwl3945_set_static_key(priv, key);
3311 else
3312 ret = iwl3945_set_dynamic_key(priv, key, sta_id);
3313 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
3314 break;
3315 case DISABLE_KEY:
3316 if (static_key)
3317 ret = iwl3945_remove_static_key(priv);
3318 else
3319 ret = iwl3945_clear_sta_key_info(priv, sta_id);
3320 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
3321 break;
3322 default:
3323 ret = -EINVAL;
3324 }
3325
3326 IWL_DEBUG_MAC80211(priv, "leave\n");
3327
3328 return ret;
3329 }
3330
3331 /*****************************************************************************
3332 *
3333 * sysfs attributes
3334 *
3335 *****************************************************************************/
3336
3337 #ifdef CONFIG_IWLWIFI_DEBUG
3338
3339 /*
3340 * The following adds a new attribute to the sysfs representation
3341 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3342 * used for controlling the debug level.
3343 *
3344 * See the level definitions in iwl for details.
3345 *
3346 * The debug_level being managed using sysfs below is a per device debug
3347 * level that is used instead of the global debug level if it (the per
3348 * device debug level) is set.
3349 */
3350 static ssize_t show_debug_level(struct device *d,
3351 struct device_attribute *attr, char *buf)
3352 {
3353 struct iwl_priv *priv = dev_get_drvdata(d);
3354 return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
3355 }
3356 static ssize_t store_debug_level(struct device *d,
3357 struct device_attribute *attr,
3358 const char *buf, size_t count)
3359 {
3360 struct iwl_priv *priv = dev_get_drvdata(d);
3361 unsigned long val;
3362 int ret;
3363
3364 ret = strict_strtoul(buf, 0, &val);
3365 if (ret)
3366 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
3367 else {
3368 priv->debug_level = val;
3369 if (iwl_alloc_traffic_mem(priv))
3370 IWL_ERR(priv,
3371 "Not enough memory to generate traffic log\n");
3372 }
3373 return strnlen(buf, count);
3374 }
3375
3376 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3377 show_debug_level, store_debug_level);
3378
3379 #endif /* CONFIG_IWLWIFI_DEBUG */
3380
3381 static ssize_t show_temperature(struct device *d,
3382 struct device_attribute *attr, char *buf)
3383 {
3384 struct iwl_priv *priv = dev_get_drvdata(d);
3385
3386 if (!iwl_is_alive(priv))
3387 return -EAGAIN;
3388
3389 return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
3390 }
3391
3392 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3393
3394 static ssize_t show_tx_power(struct device *d,
3395 struct device_attribute *attr, char *buf)
3396 {
3397 struct iwl_priv *priv = dev_get_drvdata(d);
3398 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3399 }
3400
3401 static ssize_t store_tx_power(struct device *d,
3402 struct device_attribute *attr,
3403 const char *buf, size_t count)
3404 {
3405 struct iwl_priv *priv = dev_get_drvdata(d);
3406 char *p = (char *)buf;
3407 u32 val;
3408
3409 val = simple_strtoul(p, &p, 10);
3410 if (p == buf)
3411 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
3412 else
3413 iwl3945_hw_reg_set_txpower(priv, val);
3414
3415 return count;
3416 }
3417
3418 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3419
3420 static ssize_t show_flags(struct device *d,
3421 struct device_attribute *attr, char *buf)
3422 {
3423 struct iwl_priv *priv = dev_get_drvdata(d);
3424
3425 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3426 }
3427
3428 static ssize_t store_flags(struct device *d,
3429 struct device_attribute *attr,
3430 const char *buf, size_t count)
3431 {
3432 struct iwl_priv *priv = dev_get_drvdata(d);
3433 u32 flags = simple_strtoul(buf, NULL, 0);
3434
3435 mutex_lock(&priv->mutex);
3436 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3437 /* Cancel any currently running scans... */
3438 if (iwl_scan_cancel_timeout(priv, 100))
3439 IWL_WARN(priv, "Could not cancel scan.\n");
3440 else {
3441 IWL_DEBUG_INFO(priv, "Committing rxon.flags = 0x%04X\n",
3442 flags);
3443 priv->staging_rxon.flags = cpu_to_le32(flags);
3444 iwlcore_commit_rxon(priv);
3445 }
3446 }
3447 mutex_unlock(&priv->mutex);
3448
3449 return count;
3450 }
3451
3452 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3453
3454 static ssize_t show_filter_flags(struct device *d,
3455 struct device_attribute *attr, char *buf)
3456 {
3457 struct iwl_priv *priv = dev_get_drvdata(d);
3458
3459 return sprintf(buf, "0x%04X\n",
3460 le32_to_cpu(priv->active_rxon.filter_flags));
3461 }
3462
3463 static ssize_t store_filter_flags(struct device *d,
3464 struct device_attribute *attr,
3465 const char *buf, size_t count)
3466 {
3467 struct iwl_priv *priv = dev_get_drvdata(d);
3468 u32 filter_flags = simple_strtoul(buf, NULL, 0);
3469
3470 mutex_lock(&priv->mutex);
3471 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3472 /* Cancel any currently running scans... */
3473 if (iwl_scan_cancel_timeout(priv, 100))
3474 IWL_WARN(priv, "Could not cancel scan.\n");
3475 else {
3476 IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
3477 "0x%04X\n", filter_flags);
3478 priv->staging_rxon.filter_flags =
3479 cpu_to_le32(filter_flags);
3480 iwlcore_commit_rxon(priv);
3481 }
3482 }
3483 mutex_unlock(&priv->mutex);
3484
3485 return count;
3486 }
3487
3488 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3489 store_filter_flags);
3490
3491 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3492
3493 static ssize_t show_measurement(struct device *d,
3494 struct device_attribute *attr, char *buf)
3495 {
3496 struct iwl_priv *priv = dev_get_drvdata(d);
3497 struct iwl_spectrum_notification measure_report;
3498 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3499 u8 *data = (u8 *)&measure_report;
3500 unsigned long flags;
3501
3502 spin_lock_irqsave(&priv->lock, flags);
3503 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3504 spin_unlock_irqrestore(&priv->lock, flags);
3505 return 0;
3506 }
3507 memcpy(&measure_report, &priv->measure_report, size);
3508 priv->measurement_status = 0;
3509 spin_unlock_irqrestore(&priv->lock, flags);
3510
3511 while (size && (PAGE_SIZE - len)) {
3512 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3513 PAGE_SIZE - len, 1);
3514 len = strlen(buf);
3515 if (PAGE_SIZE - len)
3516 buf[len++] = '\n';
3517
3518 ofs += 16;
3519 size -= min(size, 16U);
3520 }
3521
3522 return len;
3523 }
3524
3525 static ssize_t store_measurement(struct device *d,
3526 struct device_attribute *attr,
3527 const char *buf, size_t count)
3528 {
3529 struct iwl_priv *priv = dev_get_drvdata(d);
3530 struct ieee80211_measurement_params params = {
3531 .channel = le16_to_cpu(priv->active_rxon.channel),
3532 .start_time = cpu_to_le64(priv->last_tsf),
3533 .duration = cpu_to_le16(1),
3534 };
3535 u8 type = IWL_MEASURE_BASIC;
3536 u8 buffer[32];
3537 u8 channel;
3538
3539 if (count) {
3540 char *p = buffer;
3541 strncpy(buffer, buf, min(sizeof(buffer), count));
3542 channel = simple_strtoul(p, NULL, 0);
3543 if (channel)
3544 params.channel = channel;
3545
3546 p = buffer;
3547 while (*p && *p != ' ')
3548 p++;
3549 if (*p)
3550 type = simple_strtoul(p + 1, NULL, 0);
3551 }
3552
3553 IWL_DEBUG_INFO(priv, "Invoking measurement of type %d on "
3554 "channel %d (for '%s')\n", type, params.channel, buf);
3555 iwl3945_get_measurement(priv, &params, type);
3556
3557 return count;
3558 }
3559
3560 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3561 show_measurement, store_measurement);
3562 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
3563
3564 static ssize_t store_retry_rate(struct device *d,
3565 struct device_attribute *attr,
3566 const char *buf, size_t count)
3567 {
3568 struct iwl_priv *priv = dev_get_drvdata(d);
3569
3570 priv->retry_rate = simple_strtoul(buf, NULL, 0);
3571 if (priv->retry_rate <= 0)
3572 priv->retry_rate = 1;
3573
3574 return count;
3575 }
3576
3577 static ssize_t show_retry_rate(struct device *d,
3578 struct device_attribute *attr, char *buf)
3579 {
3580 struct iwl_priv *priv = dev_get_drvdata(d);
3581 return sprintf(buf, "%d", priv->retry_rate);
3582 }
3583
3584 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3585 store_retry_rate);
3586
3587
3588 static ssize_t show_channels(struct device *d,
3589 struct device_attribute *attr, char *buf)
3590 {
3591 /* all this shit doesn't belong into sysfs anyway */
3592 return 0;
3593 }
3594
3595 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3596
3597 static ssize_t show_statistics(struct device *d,
3598 struct device_attribute *attr, char *buf)
3599 {
3600 struct iwl_priv *priv = dev_get_drvdata(d);
3601 u32 size = sizeof(struct iwl3945_notif_statistics);
3602 u32 len = 0, ofs = 0;
3603 u8 *data = (u8 *)&priv->statistics_39;
3604 int rc = 0;
3605
3606 if (!iwl_is_alive(priv))
3607 return -EAGAIN;
3608
3609 mutex_lock(&priv->mutex);
3610 rc = iwl_send_statistics_request(priv, 0);
3611 mutex_unlock(&priv->mutex);
3612
3613 if (rc) {
3614 len = sprintf(buf,
3615 "Error sending statistics request: 0x%08X\n", rc);
3616 return len;
3617 }
3618
3619 while (size && (PAGE_SIZE - len)) {
3620 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3621 PAGE_SIZE - len, 1);
3622 len = strlen(buf);
3623 if (PAGE_SIZE - len)
3624 buf[len++] = '\n';
3625
3626 ofs += 16;
3627 size -= min(size, 16U);
3628 }
3629
3630 return len;
3631 }
3632
3633 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3634
3635 static ssize_t show_antenna(struct device *d,
3636 struct device_attribute *attr, char *buf)
3637 {
3638 struct iwl_priv *priv = dev_get_drvdata(d);
3639
3640 if (!iwl_is_alive(priv))
3641 return -EAGAIN;
3642
3643 return sprintf(buf, "%d\n", iwl3945_mod_params.antenna);
3644 }
3645
3646 static ssize_t store_antenna(struct device *d,
3647 struct device_attribute *attr,
3648 const char *buf, size_t count)
3649 {
3650 struct iwl_priv *priv __maybe_unused = dev_get_drvdata(d);
3651 int ant;
3652
3653 if (count == 0)
3654 return 0;
3655
3656 if (sscanf(buf, "%1i", &ant) != 1) {
3657 IWL_DEBUG_INFO(priv, "not in hex or decimal form.\n");
3658 return count;
3659 }
3660
3661 if ((ant >= 0) && (ant <= 2)) {
3662 IWL_DEBUG_INFO(priv, "Setting antenna select to %d.\n", ant);
3663 iwl3945_mod_params.antenna = (enum iwl3945_antenna)ant;
3664 } else
3665 IWL_DEBUG_INFO(priv, "Bad antenna select value %d.\n", ant);
3666
3667
3668 return count;
3669 }
3670
3671 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
3672
3673 static ssize_t show_status(struct device *d,
3674 struct device_attribute *attr, char *buf)
3675 {
3676 struct iwl_priv *priv = dev_get_drvdata(d);
3677 if (!iwl_is_alive(priv))
3678 return -EAGAIN;
3679 return sprintf(buf, "0x%08x\n", (int)priv->status);
3680 }
3681
3682 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3683
3684 static ssize_t dump_error_log(struct device *d,
3685 struct device_attribute *attr,
3686 const char *buf, size_t count)
3687 {
3688 struct iwl_priv *priv = dev_get_drvdata(d);
3689 char *p = (char *)buf;
3690
3691 if (p[0] == '1')
3692 iwl3945_dump_nic_error_log(priv);
3693
3694 return strnlen(buf, count);
3695 }
3696
3697 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
3698
3699 /*****************************************************************************
3700 *
3701 * driver setup and tear down
3702 *
3703 *****************************************************************************/
3704
3705 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
3706 {
3707 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3708
3709 init_waitqueue_head(&priv->wait_command_queue);
3710
3711 INIT_WORK(&priv->up, iwl3945_bg_up);
3712 INIT_WORK(&priv->restart, iwl3945_bg_restart);
3713 INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
3714 INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
3715 INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
3716 INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
3717 INIT_DELAYED_WORK(&priv->rfkill_poll, iwl3945_rfkill_poll);
3718 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
3719 INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
3720 INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
3721 INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
3722
3723 iwl3945_hw_setup_deferred_work(priv);
3724
3725 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3726 iwl3945_irq_tasklet, (unsigned long)priv);
3727 }
3728
3729 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
3730 {
3731 iwl3945_hw_cancel_deferred_work(priv);
3732
3733 cancel_delayed_work_sync(&priv->init_alive_start);
3734 cancel_delayed_work(&priv->scan_check);
3735 cancel_delayed_work(&priv->alive_start);
3736 cancel_work_sync(&priv->beacon_update);
3737 }
3738
3739 static struct attribute *iwl3945_sysfs_entries[] = {
3740 &dev_attr_antenna.attr,
3741 &dev_attr_channels.attr,
3742 &dev_attr_dump_errors.attr,
3743 &dev_attr_flags.attr,
3744 &dev_attr_filter_flags.attr,
3745 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3746 &dev_attr_measurement.attr,
3747 #endif
3748 &dev_attr_retry_rate.attr,
3749 &dev_attr_statistics.attr,
3750 &dev_attr_status.attr,
3751 &dev_attr_temperature.attr,
3752 &dev_attr_tx_power.attr,
3753 #ifdef CONFIG_IWLWIFI_DEBUG
3754 &dev_attr_debug_level.attr,
3755 #endif
3756 NULL
3757 };
3758
3759 static struct attribute_group iwl3945_attribute_group = {
3760 .name = NULL, /* put in device directory */
3761 .attrs = iwl3945_sysfs_entries,
3762 };
3763
3764 static struct ieee80211_ops iwl3945_hw_ops = {
3765 .tx = iwl3945_mac_tx,
3766 .start = iwl3945_mac_start,
3767 .stop = iwl3945_mac_stop,
3768 .add_interface = iwl_mac_add_interface,
3769 .remove_interface = iwl_mac_remove_interface,
3770 .config = iwl_mac_config,
3771 .configure_filter = iwl_configure_filter,
3772 .set_key = iwl3945_mac_set_key,
3773 .get_tx_stats = iwl_mac_get_tx_stats,
3774 .conf_tx = iwl_mac_conf_tx,
3775 .reset_tsf = iwl_mac_reset_tsf,
3776 .bss_info_changed = iwl_bss_info_changed,
3777 .hw_scan = iwl_mac_hw_scan
3778 };
3779
3780 static int iwl3945_init_drv(struct iwl_priv *priv)
3781 {
3782 int ret;
3783 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
3784
3785 priv->retry_rate = 1;
3786 priv->ibss_beacon = NULL;
3787
3788 spin_lock_init(&priv->lock);
3789 spin_lock_init(&priv->sta_lock);
3790 spin_lock_init(&priv->hcmd_lock);
3791
3792 INIT_LIST_HEAD(&priv->free_frames);
3793
3794 mutex_init(&priv->mutex);
3795
3796 /* Clear the driver's (not device's) station table */
3797 iwl_clear_stations_table(priv);
3798
3799 priv->ieee_channels = NULL;
3800 priv->ieee_rates = NULL;
3801 priv->band = IEEE80211_BAND_2GHZ;
3802
3803 priv->iw_mode = NL80211_IFTYPE_STATION;
3804
3805 iwl_reset_qos(priv);
3806
3807 priv->qos_data.qos_active = 0;
3808 priv->qos_data.qos_cap.val = 0;
3809
3810 priv->rates_mask = IWL_RATES_MASK;
3811 priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER;
3812
3813 if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
3814 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
3815 eeprom->version);
3816 ret = -EINVAL;
3817 goto err;
3818 }
3819 ret = iwl_init_channel_map(priv);
3820 if (ret) {
3821 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3822 goto err;
3823 }
3824
3825 /* Set up txpower settings in driver for all channels */
3826 if (iwl3945_txpower_set_from_eeprom(priv)) {
3827 ret = -EIO;
3828 goto err_free_channel_map;
3829 }
3830
3831 ret = iwlcore_init_geos(priv);
3832 if (ret) {
3833 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3834 goto err_free_channel_map;
3835 }
3836 iwl3945_init_hw_rates(priv, priv->ieee_rates);
3837
3838 return 0;
3839
3840 err_free_channel_map:
3841 iwl_free_channel_map(priv);
3842 err:
3843 return ret;
3844 }
3845
3846 static int iwl3945_setup_mac(struct iwl_priv *priv)
3847 {
3848 int ret;
3849 struct ieee80211_hw *hw = priv->hw;
3850
3851 hw->rate_control_algorithm = "iwl-3945-rs";
3852 hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
3853
3854 /* Tell mac80211 our characteristics */
3855 hw->flags = IEEE80211_HW_SIGNAL_DBM |
3856 IEEE80211_HW_NOISE_DBM |
3857 IEEE80211_HW_SPECTRUM_MGMT |
3858 IEEE80211_HW_SUPPORTS_PS |
3859 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
3860
3861 hw->wiphy->interface_modes =
3862 BIT(NL80211_IFTYPE_STATION) |
3863 BIT(NL80211_IFTYPE_ADHOC);
3864
3865 hw->wiphy->custom_regulatory = true;
3866
3867 /* Firmware does not support this */
3868 hw->wiphy->disable_beacon_hints = true;
3869
3870 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX_3945;
3871 /* we create the 802.11 header and a zero-length SSID element */
3872 hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
3873
3874 /* Default value; 4 EDCA QOS priorities */
3875 hw->queues = 4;
3876
3877 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
3878 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3879 &priv->bands[IEEE80211_BAND_2GHZ];
3880
3881 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
3882 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
3883 &priv->bands[IEEE80211_BAND_5GHZ];
3884
3885 ret = ieee80211_register_hw(priv->hw);
3886 if (ret) {
3887 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
3888 return ret;
3889 }
3890 priv->mac80211_registered = 1;
3891
3892 return 0;
3893 }
3894
3895 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3896 {
3897 int err = 0;
3898 struct iwl_priv *priv;
3899 struct ieee80211_hw *hw;
3900 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3901 struct iwl3945_eeprom *eeprom;
3902 unsigned long flags;
3903
3904 /***********************
3905 * 1. Allocating HW data
3906 * ********************/
3907
3908 /* mac80211 allocates memory for this device instance, including
3909 * space for this driver's private structure */
3910 hw = iwl_alloc_all(cfg, &iwl3945_hw_ops);
3911 if (hw == NULL) {
3912 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
3913 err = -ENOMEM;
3914 goto out;
3915 }
3916 priv = hw->priv;
3917 SET_IEEE80211_DEV(hw, &pdev->dev);
3918
3919 /*
3920 * Disabling hardware scan means that mac80211 will perform scans
3921 * "the hard way", rather than using device's scan.
3922 */
3923 if (iwl3945_mod_params.disable_hw_scan) {
3924 IWL_DEBUG_INFO(priv, "Disabling hw_scan\n");
3925 iwl3945_hw_ops.hw_scan = NULL;
3926 }
3927
3928
3929 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3930 priv->cfg = cfg;
3931 priv->pci_dev = pdev;
3932 priv->inta_mask = CSR_INI_SET_MASK;
3933
3934 #ifdef CONFIG_IWLWIFI_DEBUG
3935 atomic_set(&priv->restrict_refcnt, 0);
3936 #endif
3937 if (iwl_alloc_traffic_mem(priv))
3938 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3939
3940 /***************************
3941 * 2. Initializing PCI bus
3942 * *************************/
3943 if (pci_enable_device(pdev)) {
3944 err = -ENODEV;
3945 goto out_ieee80211_free_hw;
3946 }
3947
3948 pci_set_master(pdev);
3949
3950 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3951 if (!err)
3952 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3953 if (err) {
3954 IWL_WARN(priv, "No suitable DMA available.\n");
3955 goto out_pci_disable_device;
3956 }
3957
3958 pci_set_drvdata(pdev, priv);
3959 err = pci_request_regions(pdev, DRV_NAME);
3960 if (err)
3961 goto out_pci_disable_device;
3962
3963 /***********************
3964 * 3. Read REV Register
3965 * ********************/
3966 priv->hw_base = pci_iomap(pdev, 0, 0);
3967 if (!priv->hw_base) {
3968 err = -ENODEV;
3969 goto out_pci_release_regions;
3970 }
3971
3972 IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
3973 (unsigned long long) pci_resource_len(pdev, 0));
3974 IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
3975
3976 /* We disable the RETRY_TIMEOUT register (0x41) to keep
3977 * PCI Tx retries from interfering with C3 CPU state */
3978 pci_write_config_byte(pdev, 0x41, 0x00);
3979
3980 /* this spin lock will be used in apm_ops.init and EEPROM access
3981 * we should init now
3982 */
3983 spin_lock_init(&priv->reg_lock);
3984
3985 /* amp init */
3986 err = priv->cfg->ops->lib->apm_ops.init(priv);
3987 if (err < 0) {
3988 IWL_DEBUG_INFO(priv, "Failed to init the card\n");
3989 goto out_iounmap;
3990 }
3991
3992 /***********************
3993 * 4. Read EEPROM
3994 * ********************/
3995
3996 /* Read the EEPROM */
3997 err = iwl_eeprom_init(priv);
3998 if (err) {
3999 IWL_ERR(priv, "Unable to init EEPROM\n");
4000 goto out_iounmap;
4001 }
4002 /* MAC Address location in EEPROM same for 3945/4965 */
4003 eeprom = (struct iwl3945_eeprom *)priv->eeprom;
4004 memcpy(priv->mac_addr, eeprom->mac_address, ETH_ALEN);
4005 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
4006 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4007
4008 /***********************
4009 * 5. Setup HW Constants
4010 * ********************/
4011 /* Device-specific setup */
4012 if (iwl3945_hw_set_hw_params(priv)) {
4013 IWL_ERR(priv, "failed to set hw settings\n");
4014 goto out_eeprom_free;
4015 }
4016
4017 /***********************
4018 * 6. Setup priv
4019 * ********************/
4020
4021 err = iwl3945_init_drv(priv);
4022 if (err) {
4023 IWL_ERR(priv, "initializing driver failed\n");
4024 goto out_unset_hw_params;
4025 }
4026
4027 IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
4028 priv->cfg->name);
4029
4030 /***********************
4031 * 7. Setup Services
4032 * ********************/
4033
4034 spin_lock_irqsave(&priv->lock, flags);
4035 iwl_disable_interrupts(priv);
4036 spin_unlock_irqrestore(&priv->lock, flags);
4037
4038 pci_enable_msi(priv->pci_dev);
4039
4040 err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr,
4041 IRQF_SHARED, DRV_NAME, priv);
4042 if (err) {
4043 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
4044 goto out_disable_msi;
4045 }
4046
4047 err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4048 if (err) {
4049 IWL_ERR(priv, "failed to create sysfs device attributes\n");
4050 goto out_release_irq;
4051 }
4052
4053 iwl_set_rxon_channel(priv,
4054 &priv->bands[IEEE80211_BAND_2GHZ].channels[5]);
4055 iwl3945_setup_deferred_work(priv);
4056 iwl3945_setup_rx_handlers(priv);
4057 iwl_power_initialize(priv);
4058
4059 /*********************************
4060 * 8. Setup and Register mac80211
4061 * *******************************/
4062
4063 iwl_enable_interrupts(priv);
4064
4065 err = iwl3945_setup_mac(priv);
4066 if (err)
4067 goto out_remove_sysfs;
4068
4069 err = iwl_dbgfs_register(priv, DRV_NAME);
4070 if (err)
4071 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
4072
4073 /* Start monitoring the killswitch */
4074 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
4075 2 * HZ);
4076
4077 return 0;
4078
4079 out_remove_sysfs:
4080 destroy_workqueue(priv->workqueue);
4081 priv->workqueue = NULL;
4082 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4083 out_release_irq:
4084 free_irq(priv->pci_dev->irq, priv);
4085 out_disable_msi:
4086 pci_disable_msi(priv->pci_dev);
4087 iwlcore_free_geos(priv);
4088 iwl_free_channel_map(priv);
4089 out_unset_hw_params:
4090 iwl3945_unset_hw_params(priv);
4091 out_eeprom_free:
4092 iwl_eeprom_free(priv);
4093 out_iounmap:
4094 pci_iounmap(pdev, priv->hw_base);
4095 out_pci_release_regions:
4096 pci_release_regions(pdev);
4097 out_pci_disable_device:
4098 pci_set_drvdata(pdev, NULL);
4099 pci_disable_device(pdev);
4100 out_ieee80211_free_hw:
4101 iwl_free_traffic_mem(priv);
4102 ieee80211_free_hw(priv->hw);
4103 out:
4104 return err;
4105 }
4106
4107 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
4108 {
4109 struct iwl_priv *priv = pci_get_drvdata(pdev);
4110 unsigned long flags;
4111
4112 if (!priv)
4113 return;
4114
4115 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
4116
4117 iwl_dbgfs_unregister(priv);
4118
4119 set_bit(STATUS_EXIT_PENDING, &priv->status);
4120
4121 if (priv->mac80211_registered) {
4122 ieee80211_unregister_hw(priv->hw);
4123 priv->mac80211_registered = 0;
4124 } else {
4125 iwl3945_down(priv);
4126 }
4127
4128 /* make sure we flush any pending irq or
4129 * tasklet for the driver
4130 */
4131 spin_lock_irqsave(&priv->lock, flags);
4132 iwl_disable_interrupts(priv);
4133 spin_unlock_irqrestore(&priv->lock, flags);
4134
4135 iwl_synchronize_irq(priv);
4136
4137 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4138
4139 cancel_delayed_work_sync(&priv->rfkill_poll);
4140
4141 iwl3945_dealloc_ucode_pci(priv);
4142
4143 if (priv->rxq.bd)
4144 iwl3945_rx_queue_free(priv, &priv->rxq);
4145 iwl3945_hw_txq_ctx_free(priv);
4146
4147 iwl3945_unset_hw_params(priv);
4148 iwl_clear_stations_table(priv);
4149
4150 /*netif_stop_queue(dev); */
4151 flush_workqueue(priv->workqueue);
4152
4153 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4154 * priv->workqueue... so we can't take down the workqueue
4155 * until now... */
4156 destroy_workqueue(priv->workqueue);
4157 priv->workqueue = NULL;
4158 iwl_free_traffic_mem(priv);
4159
4160 free_irq(pdev->irq, priv);
4161 pci_disable_msi(pdev);
4162
4163 pci_iounmap(pdev, priv->hw_base);
4164 pci_release_regions(pdev);
4165 pci_disable_device(pdev);
4166 pci_set_drvdata(pdev, NULL);
4167
4168 iwl_free_channel_map(priv);
4169 iwlcore_free_geos(priv);
4170 kfree(priv->scan);
4171 if (priv->ibss_beacon)
4172 dev_kfree_skb(priv->ibss_beacon);
4173
4174 ieee80211_free_hw(priv->hw);
4175 }
4176
4177
4178 /*****************************************************************************
4179 *
4180 * driver and module entry point
4181 *
4182 *****************************************************************************/
4183
4184 static struct pci_driver iwl3945_driver = {
4185 .name = DRV_NAME,
4186 .id_table = iwl3945_hw_card_ids,
4187 .probe = iwl3945_pci_probe,
4188 .remove = __devexit_p(iwl3945_pci_remove),
4189 #ifdef CONFIG_PM
4190 .suspend = iwl_pci_suspend,
4191 .resume = iwl_pci_resume,
4192 #endif
4193 };
4194
4195 static int __init iwl3945_init(void)
4196 {
4197
4198 int ret;
4199 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4200 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4201
4202 ret = iwl3945_rate_control_register();
4203 if (ret) {
4204 printk(KERN_ERR DRV_NAME
4205 "Unable to register rate control algorithm: %d\n", ret);
4206 return ret;
4207 }
4208
4209 ret = pci_register_driver(&iwl3945_driver);
4210 if (ret) {
4211 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
4212 goto error_register;
4213 }
4214
4215 return ret;
4216
4217 error_register:
4218 iwl3945_rate_control_unregister();
4219 return ret;
4220 }
4221
4222 static void __exit iwl3945_exit(void)
4223 {
4224 pci_unregister_driver(&iwl3945_driver);
4225 iwl3945_rate_control_unregister();
4226 }
4227
4228 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
4229
4230 module_param_named(antenna, iwl3945_mod_params.antenna, int, S_IRUGO);
4231 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
4232 module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, S_IRUGO);
4233 MODULE_PARM_DESC(swcrypto,
4234 "using software crypto (default 1 [software])\n");
4235 #ifdef CONFIG_IWLWIFI_DEBUG
4236 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
4237 MODULE_PARM_DESC(debug, "debug output mask");
4238 #endif
4239 module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan,
4240 int, S_IRUGO);
4241 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
4242 module_param_named(fw_restart3945, iwl3945_mod_params.restart_fw, int, S_IRUGO);
4243 MODULE_PARM_DESC(fw_restart3945, "restart firmware in case of error");
4244
4245 module_exit(iwl3945_exit);
4246 module_init(iwl3945_init);
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