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[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl3945-base.c
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/skbuff.h>
37 #include <linux/netdevice.h>
38 #include <linux/wireless.h>
39 #include <linux/firmware.h>
40 #include <linux/etherdevice.h>
41 #include <linux/if_arp.h>
42
43 #include <net/ieee80211_radiotap.h>
44 #include <net/mac80211.h>
45
46 #include <asm/div64.h>
47
48 #define DRV_NAME "iwl3945"
49
50 #include "iwl-fh.h"
51 #include "iwl-3945-fh.h"
52 #include "iwl-commands.h"
53 #include "iwl-sta.h"
54 #include "iwl-3945.h"
55 #include "iwl-helpers.h"
56 #include "iwl-core.h"
57 #include "iwl-dev.h"
58
59 /*
60 * module name, copyright, version, etc.
61 */
62
63 #define DRV_DESCRIPTION \
64 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
65
66 #ifdef CONFIG_IWLWIFI_DEBUG
67 #define VD "d"
68 #else
69 #define VD
70 #endif
71
72 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
73 #define VS "s"
74 #else
75 #define VS
76 #endif
77
78 #define IWL39_VERSION "1.2.26k" VD VS
79 #define DRV_COPYRIGHT "Copyright(c) 2003-2009 Intel Corporation"
80 #define DRV_AUTHOR "<ilw@linux.intel.com>"
81 #define DRV_VERSION IWL39_VERSION
82
83
84 MODULE_DESCRIPTION(DRV_DESCRIPTION);
85 MODULE_VERSION(DRV_VERSION);
86 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
87 MODULE_LICENSE("GPL");
88
89 /* module parameters */
90 struct iwl_mod_params iwl3945_mod_params = {
91 .num_of_queues = IWL39_NUM_QUEUES, /* Not used */
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 = (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->sec_ctl = TX_CMD_SEC_CCM;
375 memcpy(tx->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->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->sec_ctl |= TX_CMD_SEC_KEY128;
388
389 memcpy(&tx->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 = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
410 __le32 tx_flags = tx->tx_flags;
411 __le16 fc = hdr->frame_control;
412 u8 rc_flags = info->control.rates[0].flags;
413
414 tx->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
415 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
416 tx_flags |= TX_CMD_FLG_ACK_MSK;
417 if (ieee80211_is_mgmt(fc))
418 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
419 if (ieee80211_is_probe_resp(fc) &&
420 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
421 tx_flags |= TX_CMD_FLG_TSF_MSK;
422 } else {
423 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
424 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
425 }
426
427 tx->sta_id = std_id;
428 if (ieee80211_has_morefrags(fc))
429 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
430
431 if (ieee80211_is_data_qos(fc)) {
432 u8 *qc = ieee80211_get_qos_ctl(hdr);
433 tx->tid_tspec = qc[0] & 0xf;
434 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
435 } else {
436 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
437 }
438
439 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
440 tx_flags |= TX_CMD_FLG_RTS_MSK;
441 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
442 } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
443 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
444 tx_flags |= TX_CMD_FLG_CTS_MSK;
445 }
446
447 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
448 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
449
450 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
451 if (ieee80211_is_mgmt(fc)) {
452 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
453 tx->timeout.pm_frame_timeout = cpu_to_le16(3);
454 else
455 tx->timeout.pm_frame_timeout = cpu_to_le16(2);
456 } else {
457 tx->timeout.pm_frame_timeout = 0;
458 }
459
460 tx->driver_txop = 0;
461 tx->tx_flags = tx_flags;
462 tx->next_frame_len = 0;
463 }
464
465 /*
466 * start REPLY_TX command process
467 */
468 static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
469 {
470 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
471 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
472 struct iwl3945_tx_cmd *tx;
473 struct iwl_tx_queue *txq = NULL;
474 struct iwl_queue *q = NULL;
475 struct iwl_device_cmd *out_cmd;
476 struct iwl_cmd_meta *out_meta;
477 dma_addr_t phys_addr;
478 dma_addr_t txcmd_phys;
479 int txq_id = skb_get_queue_mapping(skb);
480 u16 len, idx, len_org, hdr_len; /* TODO: len_org is not used */
481 u8 id;
482 u8 unicast;
483 u8 sta_id;
484 u8 tid = 0;
485 u16 seq_number = 0;
486 __le16 fc;
487 u8 wait_write_ptr = 0;
488 u8 *qc = NULL;
489 unsigned long flags;
490 int rc;
491
492 spin_lock_irqsave(&priv->lock, flags);
493 if (iwl_is_rfkill(priv)) {
494 IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n");
495 goto drop_unlock;
496 }
497
498 if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
499 IWL_ERR(priv, "ERROR: No TX rate available.\n");
500 goto drop_unlock;
501 }
502
503 unicast = !is_multicast_ether_addr(hdr->addr1);
504 id = 0;
505
506 fc = hdr->frame_control;
507
508 #ifdef CONFIG_IWLWIFI_DEBUG
509 if (ieee80211_is_auth(fc))
510 IWL_DEBUG_TX(priv, "Sending AUTH frame\n");
511 else if (ieee80211_is_assoc_req(fc))
512 IWL_DEBUG_TX(priv, "Sending ASSOC frame\n");
513 else if (ieee80211_is_reassoc_req(fc))
514 IWL_DEBUG_TX(priv, "Sending REASSOC frame\n");
515 #endif
516
517 /* drop all non-injected data frame if we are not associated */
518 if (ieee80211_is_data(fc) &&
519 !(info->flags & IEEE80211_TX_CTL_INJECTED) &&
520 (!iwl_is_associated(priv) ||
521 ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
522 IWL_DEBUG_DROP(priv, "Dropping - !iwl_is_associated\n");
523 goto drop_unlock;
524 }
525
526 spin_unlock_irqrestore(&priv->lock, flags);
527
528 hdr_len = ieee80211_hdrlen(fc);
529
530 /* Find (or create) index into station table for destination station */
531 if (info->flags & IEEE80211_TX_CTL_INJECTED)
532 sta_id = priv->hw_params.bcast_sta_id;
533 else
534 sta_id = iwl_get_sta_id(priv, hdr);
535 if (sta_id == IWL_INVALID_STATION) {
536 IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n",
537 hdr->addr1);
538 goto drop;
539 }
540
541 IWL_DEBUG_RATE(priv, "station Id %d\n", sta_id);
542
543 if (ieee80211_is_data_qos(fc)) {
544 qc = ieee80211_get_qos_ctl(hdr);
545 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
546 if (unlikely(tid >= MAX_TID_COUNT))
547 goto drop;
548 seq_number = priv->stations[sta_id].tid[tid].seq_number &
549 IEEE80211_SCTL_SEQ;
550 hdr->seq_ctrl = cpu_to_le16(seq_number) |
551 (hdr->seq_ctrl &
552 cpu_to_le16(IEEE80211_SCTL_FRAG));
553 seq_number += 0x10;
554 }
555
556 /* Descriptor for chosen Tx queue */
557 txq = &priv->txq[txq_id];
558 q = &txq->q;
559
560 spin_lock_irqsave(&priv->lock, flags);
561
562 idx = get_cmd_index(q, q->write_ptr, 0);
563
564 /* Set up driver data for this TFD */
565 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
566 txq->txb[q->write_ptr].skb[0] = skb;
567
568 /* Init first empty entry in queue's array of Tx/cmd buffers */
569 out_cmd = txq->cmd[idx];
570 out_meta = &txq->meta[idx];
571 tx = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload;
572 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
573 memset(tx, 0, sizeof(*tx));
574
575 /*
576 * Set up the Tx-command (not MAC!) header.
577 * Store the chosen Tx queue and TFD index within the sequence field;
578 * after Tx, uCode's Tx response will return this value so driver can
579 * locate the frame within the tx queue and do post-tx processing.
580 */
581 out_cmd->hdr.cmd = REPLY_TX;
582 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
583 INDEX_TO_SEQ(q->write_ptr)));
584
585 /* Copy MAC header from skb into command buffer */
586 memcpy(tx->hdr, hdr, hdr_len);
587
588
589 if (info->control.hw_key)
590 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, sta_id);
591
592 /* TODO need this for burst mode later on */
593 iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id);
594
595 /* set is_hcca to 0; it probably will never be implemented */
596 iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
597
598 /* Total # bytes to be transmitted */
599 len = (u16)skb->len;
600 tx->len = cpu_to_le16(len);
601
602 iwl_dbg_log_tx_data_frame(priv, len, hdr);
603 iwl_update_stats(priv, true, fc, len);
604 tx->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
605 tx->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
606
607 if (!ieee80211_has_morefrags(hdr->frame_control)) {
608 txq->need_update = 1;
609 if (qc)
610 priv->stations[sta_id].tid[tid].seq_number = seq_number;
611 } else {
612 wait_write_ptr = 1;
613 txq->need_update = 0;
614 }
615
616 IWL_DEBUG_TX(priv, "sequence nr = 0X%x \n",
617 le16_to_cpu(out_cmd->hdr.sequence));
618 IWL_DEBUG_TX(priv, "tx_flags = 0X%x \n", le32_to_cpu(tx->tx_flags));
619 iwl_print_hex_dump(priv, IWL_DL_TX, tx, sizeof(*tx));
620 iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx->hdr,
621 ieee80211_hdrlen(fc));
622
623 /*
624 * Use the first empty entry in this queue's command buffer array
625 * to contain the Tx command and MAC header concatenated together
626 * (payload data will be in another buffer).
627 * Size of this varies, due to varying MAC header length.
628 * If end is not dword aligned, we'll have 2 extra bytes at the end
629 * of the MAC header (device reads on dword boundaries).
630 * We'll tell device about this padding later.
631 */
632 len = sizeof(struct iwl3945_tx_cmd) +
633 sizeof(struct iwl_cmd_header) + hdr_len;
634
635 len_org = len;
636 len = (len + 3) & ~3;
637
638 if (len_org != len)
639 len_org = 1;
640 else
641 len_org = 0;
642
643 /* Physical address of this Tx command's header (not MAC header!),
644 * within command buffer array. */
645 txcmd_phys = pci_map_single(priv->pci_dev, &out_cmd->hdr,
646 len, PCI_DMA_TODEVICE);
647 /* we do not map meta data ... so we can safely access address to
648 * provide to unmap command*/
649 pci_unmap_addr_set(out_meta, mapping, txcmd_phys);
650 pci_unmap_len_set(out_meta, len, len);
651
652 /* Add buffer containing Tx command and MAC(!) header to TFD's
653 * first entry */
654 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
655 txcmd_phys, len, 1, 0);
656
657
658 /* Set up TFD's 2nd entry to point directly to remainder of skb,
659 * if any (802.11 null frames have no payload). */
660 len = skb->len - hdr_len;
661 if (len) {
662 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
663 len, PCI_DMA_TODEVICE);
664 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
665 phys_addr, len,
666 0, U32_PAD(len));
667 }
668
669
670 /* Tell device the write index *just past* this latest filled TFD */
671 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
672 rc = iwl_txq_update_write_ptr(priv, txq);
673 spin_unlock_irqrestore(&priv->lock, flags);
674
675 if (rc)
676 return rc;
677
678 if ((iwl_queue_space(q) < q->high_mark)
679 && priv->mac80211_registered) {
680 if (wait_write_ptr) {
681 spin_lock_irqsave(&priv->lock, flags);
682 txq->need_update = 1;
683 iwl_txq_update_write_ptr(priv, txq);
684 spin_unlock_irqrestore(&priv->lock, flags);
685 }
686
687 iwl_stop_queue(priv, skb_get_queue_mapping(skb));
688 }
689
690 return 0;
691
692 drop_unlock:
693 spin_unlock_irqrestore(&priv->lock, flags);
694 drop:
695 return -1;
696 }
697
698 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
699
700 #include "iwl-spectrum.h"
701
702 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
703 #define BEACON_TIME_MASK_HIGH 0xFF000000
704 #define TIME_UNIT 1024
705
706 /*
707 * extended beacon time format
708 * time in usec will be changed into a 32-bit value in 8:24 format
709 * the high 1 byte is the beacon counts
710 * the lower 3 bytes is the time in usec within one beacon interval
711 */
712
713 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
714 {
715 u32 quot;
716 u32 rem;
717 u32 interval = beacon_interval * 1024;
718
719 if (!interval || !usec)
720 return 0;
721
722 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
723 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
724
725 return (quot << 24) + rem;
726 }
727
728 /* base is usually what we get from ucode with each received frame,
729 * the same as HW timer counter counting down
730 */
731
732 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
733 {
734 u32 base_low = base & BEACON_TIME_MASK_LOW;
735 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
736 u32 interval = beacon_interval * TIME_UNIT;
737 u32 res = (base & BEACON_TIME_MASK_HIGH) +
738 (addon & BEACON_TIME_MASK_HIGH);
739
740 if (base_low > addon_low)
741 res += base_low - addon_low;
742 else if (base_low < addon_low) {
743 res += interval + base_low - addon_low;
744 res += (1 << 24);
745 } else
746 res += (1 << 24);
747
748 return cpu_to_le32(res);
749 }
750
751 static int iwl3945_get_measurement(struct iwl_priv *priv,
752 struct ieee80211_measurement_params *params,
753 u8 type)
754 {
755 struct iwl_spectrum_cmd spectrum;
756 struct iwl_rx_packet *res;
757 struct iwl_host_cmd cmd = {
758 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
759 .data = (void *)&spectrum,
760 .flags = CMD_WANT_SKB,
761 };
762 u32 add_time = le64_to_cpu(params->start_time);
763 int rc;
764 int spectrum_resp_status;
765 int duration = le16_to_cpu(params->duration);
766
767 if (iwl_is_associated(priv))
768 add_time =
769 iwl3945_usecs_to_beacons(
770 le64_to_cpu(params->start_time) - priv->last_tsf,
771 le16_to_cpu(priv->rxon_timing.beacon_interval));
772
773 memset(&spectrum, 0, sizeof(spectrum));
774
775 spectrum.channel_count = cpu_to_le16(1);
776 spectrum.flags =
777 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
778 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
779 cmd.len = sizeof(spectrum);
780 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
781
782 if (iwl_is_associated(priv))
783 spectrum.start_time =
784 iwl3945_add_beacon_time(priv->last_beacon_time,
785 add_time,
786 le16_to_cpu(priv->rxon_timing.beacon_interval));
787 else
788 spectrum.start_time = 0;
789
790 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
791 spectrum.channels[0].channel = params->channel;
792 spectrum.channels[0].type = type;
793 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
794 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
795 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
796
797 rc = iwl_send_cmd_sync(priv, &cmd);
798 if (rc)
799 return rc;
800
801 res = (struct iwl_rx_packet *)cmd.reply_skb->data;
802 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
803 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
804 rc = -EIO;
805 }
806
807 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
808 switch (spectrum_resp_status) {
809 case 0: /* Command will be handled */
810 if (res->u.spectrum.id != 0xff) {
811 IWL_DEBUG_INFO(priv, "Replaced existing measurement: %d\n",
812 res->u.spectrum.id);
813 priv->measurement_status &= ~MEASUREMENT_READY;
814 }
815 priv->measurement_status |= MEASUREMENT_ACTIVE;
816 rc = 0;
817 break;
818
819 case 1: /* Command will not be handled */
820 rc = -EAGAIN;
821 break;
822 }
823
824 dev_kfree_skb_any(cmd.reply_skb);
825
826 return rc;
827 }
828 #endif
829
830 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
831 struct iwl_rx_mem_buffer *rxb)
832 {
833 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
834 struct iwl_alive_resp *palive;
835 struct delayed_work *pwork;
836
837 palive = &pkt->u.alive_frame;
838
839 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
840 "0x%01X 0x%01X\n",
841 palive->is_valid, palive->ver_type,
842 palive->ver_subtype);
843
844 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
845 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
846 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
847 sizeof(struct iwl_alive_resp));
848 pwork = &priv->init_alive_start;
849 } else {
850 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
851 memcpy(&priv->card_alive, &pkt->u.alive_frame,
852 sizeof(struct iwl_alive_resp));
853 pwork = &priv->alive_start;
854 iwl3945_disable_events(priv);
855 }
856
857 /* We delay the ALIVE response by 5ms to
858 * give the HW RF Kill time to activate... */
859 if (palive->is_valid == UCODE_VALID_OK)
860 queue_delayed_work(priv->workqueue, pwork,
861 msecs_to_jiffies(5));
862 else
863 IWL_WARN(priv, "uCode did not respond OK.\n");
864 }
865
866 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
867 struct iwl_rx_mem_buffer *rxb)
868 {
869 #ifdef CONFIG_IWLWIFI_DEBUG
870 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
871 #endif
872
873 IWL_DEBUG_RX(priv, "Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
874 return;
875 }
876
877 static void iwl3945_bg_beacon_update(struct work_struct *work)
878 {
879 struct iwl_priv *priv =
880 container_of(work, struct iwl_priv, beacon_update);
881 struct sk_buff *beacon;
882
883 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
884 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
885
886 if (!beacon) {
887 IWL_ERR(priv, "update beacon failed\n");
888 return;
889 }
890
891 mutex_lock(&priv->mutex);
892 /* new beacon skb is allocated every time; dispose previous.*/
893 if (priv->ibss_beacon)
894 dev_kfree_skb(priv->ibss_beacon);
895
896 priv->ibss_beacon = beacon;
897 mutex_unlock(&priv->mutex);
898
899 iwl3945_send_beacon_cmd(priv);
900 }
901
902 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
903 struct iwl_rx_mem_buffer *rxb)
904 {
905 #ifdef CONFIG_IWLWIFI_DEBUG
906 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
907 struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
908 u8 rate = beacon->beacon_notify_hdr.rate;
909
910 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
911 "tsf %d %d rate %d\n",
912 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
913 beacon->beacon_notify_hdr.failure_frame,
914 le32_to_cpu(beacon->ibss_mgr_status),
915 le32_to_cpu(beacon->high_tsf),
916 le32_to_cpu(beacon->low_tsf), rate);
917 #endif
918
919 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
920 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
921 queue_work(priv->workqueue, &priv->beacon_update);
922 }
923
924 /* Handle notification from uCode that card's power state is changing
925 * due to software, hardware, or critical temperature RFKILL */
926 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
927 struct iwl_rx_mem_buffer *rxb)
928 {
929 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
930 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
931 unsigned long status = priv->status;
932
933 IWL_WARN(priv, "Card state received: HW:%s SW:%s\n",
934 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
935 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
936
937 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
938 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
939
940 if (flags & HW_CARD_DISABLED)
941 set_bit(STATUS_RF_KILL_HW, &priv->status);
942 else
943 clear_bit(STATUS_RF_KILL_HW, &priv->status);
944
945
946 iwl_scan_cancel(priv);
947
948 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
949 test_bit(STATUS_RF_KILL_HW, &priv->status)))
950 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
951 test_bit(STATUS_RF_KILL_HW, &priv->status));
952 else
953 wake_up_interruptible(&priv->wait_command_queue);
954 }
955
956 /**
957 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
958 *
959 * Setup the RX handlers for each of the reply types sent from the uCode
960 * to the host.
961 *
962 * This function chains into the hardware specific files for them to setup
963 * any hardware specific handlers as well.
964 */
965 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
966 {
967 priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
968 priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
969 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
970 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
971 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
972 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
973 iwl_rx_pm_debug_statistics_notif;
974 priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
975
976 /*
977 * The same handler is used for both the REPLY to a discrete
978 * statistics request from the host as well as for the periodic
979 * statistics notifications (after received beacons) from the uCode.
980 */
981 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
982 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
983
984 iwl_setup_spectrum_handlers(priv);
985 iwl_setup_rx_scan_handlers(priv);
986 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
987
988 /* Set up hardware specific Rx handlers */
989 iwl3945_hw_rx_handler_setup(priv);
990 }
991
992 /************************** RX-FUNCTIONS ****************************/
993 /*
994 * Rx theory of operation
995 *
996 * The host allocates 32 DMA target addresses and passes the host address
997 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
998 * 0 to 31
999 *
1000 * Rx Queue Indexes
1001 * The host/firmware share two index registers for managing the Rx buffers.
1002 *
1003 * The READ index maps to the first position that the firmware may be writing
1004 * to -- the driver can read up to (but not including) this position and get
1005 * good data.
1006 * The READ index is managed by the firmware once the card is enabled.
1007 *
1008 * The WRITE index maps to the last position the driver has read from -- the
1009 * position preceding WRITE is the last slot the firmware can place a packet.
1010 *
1011 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
1012 * WRITE = READ.
1013 *
1014 * During initialization, the host sets up the READ queue position to the first
1015 * INDEX position, and WRITE to the last (READ - 1 wrapped)
1016 *
1017 * When the firmware places a packet in a buffer, it will advance the READ index
1018 * and fire the RX interrupt. The driver can then query the READ index and
1019 * process as many packets as possible, moving the WRITE index forward as it
1020 * resets the Rx queue buffers with new memory.
1021 *
1022 * The management in the driver is as follows:
1023 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
1024 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
1025 * to replenish the iwl->rxq->rx_free.
1026 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
1027 * iwl->rxq is replenished and the READ INDEX is updated (updating the
1028 * 'processed' and 'read' driver indexes as well)
1029 * + A received packet is processed and handed to the kernel network stack,
1030 * detached from the iwl->rxq. The driver 'processed' index is updated.
1031 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
1032 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
1033 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
1034 * were enough free buffers and RX_STALLED is set it is cleared.
1035 *
1036 *
1037 * Driver sequence:
1038 *
1039 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
1040 * iwl3945_rx_queue_restock
1041 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
1042 * queue, updates firmware pointers, and updates
1043 * the WRITE index. If insufficient rx_free buffers
1044 * are available, schedules iwl3945_rx_replenish
1045 *
1046 * -- enable interrupts --
1047 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
1048 * READ INDEX, detaching the SKB from the pool.
1049 * Moves the packet buffer from queue to rx_used.
1050 * Calls iwl3945_rx_queue_restock to refill any empty
1051 * slots.
1052 * ...
1053 *
1054 */
1055
1056 /**
1057 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
1058 */
1059 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
1060 dma_addr_t dma_addr)
1061 {
1062 return cpu_to_le32((u32)dma_addr);
1063 }
1064
1065 /**
1066 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
1067 *
1068 * If there are slots in the RX queue that need to be restocked,
1069 * and we have free pre-allocated buffers, fill the ranks as much
1070 * as we can, pulling from rx_free.
1071 *
1072 * This moves the 'write' index forward to catch up with 'processed', and
1073 * also updates the memory address in the firmware to reference the new
1074 * target buffer.
1075 */
1076 static int iwl3945_rx_queue_restock(struct iwl_priv *priv)
1077 {
1078 struct iwl_rx_queue *rxq = &priv->rxq;
1079 struct list_head *element;
1080 struct iwl_rx_mem_buffer *rxb;
1081 unsigned long flags;
1082 int write, rc;
1083
1084 spin_lock_irqsave(&rxq->lock, flags);
1085 write = rxq->write & ~0x7;
1086 while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
1087 /* Get next free Rx buffer, remove from free list */
1088 element = rxq->rx_free.next;
1089 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1090 list_del(element);
1091
1092 /* Point to Rx buffer via next RBD in circular buffer */
1093 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->real_dma_addr);
1094 rxq->queue[rxq->write] = rxb;
1095 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
1096 rxq->free_count--;
1097 }
1098 spin_unlock_irqrestore(&rxq->lock, flags);
1099 /* If the pre-allocated buffer pool is dropping low, schedule to
1100 * refill it */
1101 if (rxq->free_count <= RX_LOW_WATERMARK)
1102 queue_work(priv->workqueue, &priv->rx_replenish);
1103
1104
1105 /* If we've added more space for the firmware to place data, tell it.
1106 * Increment device's write pointer in multiples of 8. */
1107 if ((rxq->write_actual != (rxq->write & ~0x7))
1108 || (abs(rxq->write - rxq->read) > 7)) {
1109 spin_lock_irqsave(&rxq->lock, flags);
1110 rxq->need_update = 1;
1111 spin_unlock_irqrestore(&rxq->lock, flags);
1112 rc = iwl_rx_queue_update_write_ptr(priv, rxq);
1113 if (rc)
1114 return rc;
1115 }
1116
1117 return 0;
1118 }
1119
1120 /**
1121 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1122 *
1123 * When moving to rx_free an SKB is allocated for the slot.
1124 *
1125 * Also restock the Rx queue via iwl3945_rx_queue_restock.
1126 * This is called as a scheduled work item (except for during initialization)
1127 */
1128 static void iwl3945_rx_allocate(struct iwl_priv *priv, gfp_t priority)
1129 {
1130 struct iwl_rx_queue *rxq = &priv->rxq;
1131 struct list_head *element;
1132 struct iwl_rx_mem_buffer *rxb;
1133 struct sk_buff *skb;
1134 unsigned long flags;
1135
1136 while (1) {
1137 spin_lock_irqsave(&rxq->lock, flags);
1138
1139 if (list_empty(&rxq->rx_used)) {
1140 spin_unlock_irqrestore(&rxq->lock, flags);
1141 return;
1142 }
1143 spin_unlock_irqrestore(&rxq->lock, flags);
1144
1145 if (rxq->free_count > RX_LOW_WATERMARK)
1146 priority |= __GFP_NOWARN;
1147 /* Alloc a new receive buffer */
1148 skb = alloc_skb(priv->hw_params.rx_buf_size, priority);
1149 if (!skb) {
1150 if (net_ratelimit())
1151 IWL_DEBUG_INFO(priv, "Failed to allocate SKB buffer.\n");
1152 if ((rxq->free_count <= RX_LOW_WATERMARK) &&
1153 net_ratelimit())
1154 IWL_CRIT(priv, "Failed to allocate SKB buffer with %s. Only %u free buffers remaining.\n",
1155 priority == GFP_ATOMIC ? "GFP_ATOMIC" : "GFP_KERNEL",
1156 rxq->free_count);
1157 /* We don't reschedule replenish work here -- we will
1158 * call the restock method and if it still needs
1159 * more buffers it will schedule replenish */
1160 break;
1161 }
1162
1163 spin_lock_irqsave(&rxq->lock, flags);
1164 if (list_empty(&rxq->rx_used)) {
1165 spin_unlock_irqrestore(&rxq->lock, flags);
1166 dev_kfree_skb_any(skb);
1167 return;
1168 }
1169 element = rxq->rx_used.next;
1170 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1171 list_del(element);
1172 spin_unlock_irqrestore(&rxq->lock, flags);
1173
1174 rxb->skb = skb;
1175
1176 /* If radiotap head is required, reserve some headroom here.
1177 * The physical head count is a variable rx_stats->phy_count.
1178 * We reserve 4 bytes here. Plus these extra bytes, the
1179 * headroom of the physical head should be enough for the
1180 * radiotap head that iwl3945 supported. See iwl3945_rt.
1181 */
1182 skb_reserve(rxb->skb, 4);
1183
1184 /* Get physical address of RB/SKB */
1185 rxb->real_dma_addr = pci_map_single(priv->pci_dev,
1186 rxb->skb->data,
1187 priv->hw_params.rx_buf_size,
1188 PCI_DMA_FROMDEVICE);
1189
1190 spin_lock_irqsave(&rxq->lock, flags);
1191 list_add_tail(&rxb->list, &rxq->rx_free);
1192 priv->alloc_rxb_skb++;
1193 rxq->free_count++;
1194 spin_unlock_irqrestore(&rxq->lock, flags);
1195 }
1196 }
1197
1198 void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1199 {
1200 unsigned long flags;
1201 int i;
1202 spin_lock_irqsave(&rxq->lock, flags);
1203 INIT_LIST_HEAD(&rxq->rx_free);
1204 INIT_LIST_HEAD(&rxq->rx_used);
1205 /* Fill the rx_used queue with _all_ of the Rx buffers */
1206 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
1207 /* In the reset function, these buffers may have been allocated
1208 * to an SKB, so we need to unmap and free potential storage */
1209 if (rxq->pool[i].skb != NULL) {
1210 pci_unmap_single(priv->pci_dev,
1211 rxq->pool[i].real_dma_addr,
1212 priv->hw_params.rx_buf_size,
1213 PCI_DMA_FROMDEVICE);
1214 priv->alloc_rxb_skb--;
1215 dev_kfree_skb(rxq->pool[i].skb);
1216 rxq->pool[i].skb = NULL;
1217 }
1218 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
1219 }
1220
1221 /* Set us so that we have processed and used all buffers, but have
1222 * not restocked the Rx queue with fresh buffers */
1223 rxq->read = rxq->write = 0;
1224 rxq->free_count = 0;
1225 rxq->write_actual = 0;
1226 spin_unlock_irqrestore(&rxq->lock, flags);
1227 }
1228
1229 void iwl3945_rx_replenish(void *data)
1230 {
1231 struct iwl_priv *priv = data;
1232 unsigned long flags;
1233
1234 iwl3945_rx_allocate(priv, GFP_KERNEL);
1235
1236 spin_lock_irqsave(&priv->lock, flags);
1237 iwl3945_rx_queue_restock(priv);
1238 spin_unlock_irqrestore(&priv->lock, flags);
1239 }
1240
1241 static void iwl3945_rx_replenish_now(struct iwl_priv *priv)
1242 {
1243 iwl3945_rx_allocate(priv, GFP_ATOMIC);
1244
1245 iwl3945_rx_queue_restock(priv);
1246 }
1247
1248
1249 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1250 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1251 * This free routine walks the list of POOL entries and if SKB is set to
1252 * non NULL it is unmapped and freed
1253 */
1254 static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1255 {
1256 int i;
1257 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
1258 if (rxq->pool[i].skb != NULL) {
1259 pci_unmap_single(priv->pci_dev,
1260 rxq->pool[i].real_dma_addr,
1261 priv->hw_params.rx_buf_size,
1262 PCI_DMA_FROMDEVICE);
1263 dev_kfree_skb(rxq->pool[i].skb);
1264 }
1265 }
1266
1267 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
1268 rxq->dma_addr);
1269 pci_free_consistent(priv->pci_dev, sizeof(struct iwl_rb_status),
1270 rxq->rb_stts, rxq->rb_stts_dma);
1271 rxq->bd = NULL;
1272 rxq->rb_stts = NULL;
1273 }
1274
1275
1276 /* Convert linear signal-to-noise ratio into dB */
1277 static u8 ratio2dB[100] = {
1278 /* 0 1 2 3 4 5 6 7 8 9 */
1279 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1280 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1281 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1282 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1283 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1284 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1285 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1286 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1287 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1288 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1289 };
1290
1291 /* Calculates a relative dB value from a ratio of linear
1292 * (i.e. not dB) signal levels.
1293 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1294 int iwl3945_calc_db_from_ratio(int sig_ratio)
1295 {
1296 /* 1000:1 or higher just report as 60 dB */
1297 if (sig_ratio >= 1000)
1298 return 60;
1299
1300 /* 100:1 or higher, divide by 10 and use table,
1301 * add 20 dB to make up for divide by 10 */
1302 if (sig_ratio >= 100)
1303 return 20 + (int)ratio2dB[sig_ratio/10];
1304
1305 /* We shouldn't see this */
1306 if (sig_ratio < 1)
1307 return 0;
1308
1309 /* Use table for ratios 1:1 - 99:1 */
1310 return (int)ratio2dB[sig_ratio];
1311 }
1312
1313 #define PERFECT_RSSI (-20) /* dBm */
1314 #define WORST_RSSI (-95) /* dBm */
1315 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
1316
1317 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
1318 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
1319 * about formulas used below. */
1320 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
1321 {
1322 int sig_qual;
1323 int degradation = PERFECT_RSSI - rssi_dbm;
1324
1325 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
1326 * as indicator; formula is (signal dbm - noise dbm).
1327 * SNR at or above 40 is a great signal (100%).
1328 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
1329 * Weakest usable signal is usually 10 - 15 dB SNR. */
1330 if (noise_dbm) {
1331 if (rssi_dbm - noise_dbm >= 40)
1332 return 100;
1333 else if (rssi_dbm < noise_dbm)
1334 return 0;
1335 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
1336
1337 /* Else use just the signal level.
1338 * This formula is a least squares fit of data points collected and
1339 * compared with a reference system that had a percentage (%) display
1340 * for signal quality. */
1341 } else
1342 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
1343 (15 * RSSI_RANGE + 62 * degradation)) /
1344 (RSSI_RANGE * RSSI_RANGE);
1345
1346 if (sig_qual > 100)
1347 sig_qual = 100;
1348 else if (sig_qual < 1)
1349 sig_qual = 0;
1350
1351 return sig_qual;
1352 }
1353
1354 /**
1355 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1356 *
1357 * Uses the priv->rx_handlers callback function array to invoke
1358 * the appropriate handlers, including command responses,
1359 * frame-received notifications, and other notifications.
1360 */
1361 static void iwl3945_rx_handle(struct iwl_priv *priv)
1362 {
1363 struct iwl_rx_mem_buffer *rxb;
1364 struct iwl_rx_packet *pkt;
1365 struct iwl_rx_queue *rxq = &priv->rxq;
1366 u32 r, i;
1367 int reclaim;
1368 unsigned long flags;
1369 u8 fill_rx = 0;
1370 u32 count = 8;
1371 int total_empty = 0;
1372
1373 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1374 * buffer that the driver may process (last buffer filled by ucode). */
1375 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
1376 i = rxq->read;
1377
1378 /* calculate total frames need to be restock after handling RX */
1379 total_empty = r - priv->rxq.write_actual;
1380 if (total_empty < 0)
1381 total_empty += RX_QUEUE_SIZE;
1382
1383 if (total_empty > (RX_QUEUE_SIZE / 2))
1384 fill_rx = 1;
1385 /* Rx interrupt, but nothing sent from uCode */
1386 if (i == r)
1387 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
1388
1389 while (i != r) {
1390 rxb = rxq->queue[i];
1391
1392 /* If an RXB doesn't have a Rx queue slot associated with it,
1393 * then a bug has been introduced in the queue refilling
1394 * routines -- catch it here */
1395 BUG_ON(rxb == NULL);
1396
1397 rxq->queue[i] = NULL;
1398
1399 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
1400 priv->hw_params.rx_buf_size,
1401 PCI_DMA_FROMDEVICE);
1402 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1403
1404 trace_iwlwifi_dev_rx(priv, pkt,
1405 le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK);
1406
1407 /* Reclaim a command buffer only if this packet is a response
1408 * to a (driver-originated) command.
1409 * If the packet (e.g. Rx frame) originated from uCode,
1410 * there is no command buffer to reclaim.
1411 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1412 * but apparently a few don't get set; catch them here. */
1413 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1414 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1415 (pkt->hdr.cmd != REPLY_TX);
1416
1417 /* Based on type of command response or notification,
1418 * handle those that need handling via function in
1419 * rx_handlers table. See iwl3945_setup_rx_handlers() */
1420 if (priv->rx_handlers[pkt->hdr.cmd]) {
1421 IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r, i,
1422 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1423 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1424 priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
1425 } else {
1426 /* No handling needed */
1427 IWL_DEBUG_RX(priv, "r %d i %d No handler needed for %s, 0x%02x\n",
1428 r, i, get_cmd_string(pkt->hdr.cmd),
1429 pkt->hdr.cmd);
1430 }
1431
1432 if (reclaim) {
1433 /* Invoke any callbacks, transfer the skb to caller, and
1434 * fire off the (possibly) blocking iwl_send_cmd()
1435 * as we reclaim the driver command queue */
1436 if (rxb && rxb->skb)
1437 iwl_tx_cmd_complete(priv, rxb);
1438 else
1439 IWL_WARN(priv, "Claim null rxb?\n");
1440 }
1441
1442 /* For now we just don't re-use anything. We can tweak this
1443 * later to try and re-use notification packets and SKBs that
1444 * fail to Rx correctly */
1445 if (rxb->skb != NULL) {
1446 priv->alloc_rxb_skb--;
1447 dev_kfree_skb_any(rxb->skb);
1448 rxb->skb = NULL;
1449 }
1450
1451 spin_lock_irqsave(&rxq->lock, flags);
1452 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1453 spin_unlock_irqrestore(&rxq->lock, flags);
1454 i = (i + 1) & RX_QUEUE_MASK;
1455 /* If there are a lot of unused frames,
1456 * restock the Rx queue so ucode won't assert. */
1457 if (fill_rx) {
1458 count++;
1459 if (count >= 8) {
1460 priv->rxq.read = i;
1461 iwl3945_rx_replenish_now(priv);
1462 count = 0;
1463 }
1464 }
1465 }
1466
1467 /* Backtrack one entry */
1468 priv->rxq.read = i;
1469 if (fill_rx)
1470 iwl3945_rx_replenish_now(priv);
1471 else
1472 iwl3945_rx_queue_restock(priv);
1473 }
1474
1475 /* call this function to flush any scheduled tasklet */
1476 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1477 {
1478 /* wait to make sure we flush pending tasklet*/
1479 synchronize_irq(priv->pci_dev->irq);
1480 tasklet_kill(&priv->irq_tasklet);
1481 }
1482
1483 #ifdef CONFIG_IWLWIFI_DEBUG
1484 static const char *desc_lookup(int i)
1485 {
1486 switch (i) {
1487 case 1:
1488 return "FAIL";
1489 case 2:
1490 return "BAD_PARAM";
1491 case 3:
1492 return "BAD_CHECKSUM";
1493 case 4:
1494 return "NMI_INTERRUPT";
1495 case 5:
1496 return "SYSASSERT";
1497 case 6:
1498 return "FATAL_ERROR";
1499 }
1500
1501 return "UNKNOWN";
1502 }
1503
1504 #define ERROR_START_OFFSET (1 * sizeof(u32))
1505 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1506
1507 void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
1508 {
1509 u32 i;
1510 u32 desc, time, count, base, data1;
1511 u32 blink1, blink2, ilink1, ilink2;
1512
1513 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1514
1515 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1516 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1517 return;
1518 }
1519
1520
1521 count = iwl_read_targ_mem(priv, base);
1522
1523 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1524 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1525 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1526 priv->status, count);
1527 }
1528
1529 IWL_ERR(priv, "Desc Time asrtPC blink2 "
1530 "ilink1 nmiPC Line\n");
1531 for (i = ERROR_START_OFFSET;
1532 i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
1533 i += ERROR_ELEM_SIZE) {
1534 desc = iwl_read_targ_mem(priv, base + i);
1535 time =
1536 iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
1537 blink1 =
1538 iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
1539 blink2 =
1540 iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
1541 ilink1 =
1542 iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
1543 ilink2 =
1544 iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
1545 data1 =
1546 iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
1547
1548 IWL_ERR(priv,
1549 "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1550 desc_lookup(desc), desc, time, blink1, blink2,
1551 ilink1, ilink2, data1);
1552 trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, 0,
1553 0, blink1, blink2, ilink1, ilink2);
1554 }
1555 }
1556
1557 #define EVENT_START_OFFSET (6 * sizeof(u32))
1558
1559 /**
1560 * iwl3945_print_event_log - Dump error event log to syslog
1561 *
1562 */
1563 static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
1564 u32 num_events, u32 mode)
1565 {
1566 u32 i;
1567 u32 base; /* SRAM byte address of event log header */
1568 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1569 u32 ptr; /* SRAM byte address of log data */
1570 u32 ev, time, data; /* event log data */
1571
1572 if (num_events == 0)
1573 return;
1574
1575 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1576
1577 if (mode == 0)
1578 event_size = 2 * sizeof(u32);
1579 else
1580 event_size = 3 * sizeof(u32);
1581
1582 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1583
1584 /* "time" is actually "data" for mode 0 (no timestamp).
1585 * place event id # at far right for easier visual parsing. */
1586 for (i = 0; i < num_events; i++) {
1587 ev = iwl_read_targ_mem(priv, ptr);
1588 ptr += sizeof(u32);
1589 time = iwl_read_targ_mem(priv, ptr);
1590 ptr += sizeof(u32);
1591 if (mode == 0) {
1592 /* data, ev */
1593 IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
1594 trace_iwlwifi_dev_ucode_event(priv, 0, time, ev);
1595 } else {
1596 data = iwl_read_targ_mem(priv, ptr);
1597 ptr += sizeof(u32);
1598 IWL_ERR(priv, "%010u\t0x%08x\t%04u\n", time, data, ev);
1599 trace_iwlwifi_dev_ucode_event(priv, time, data, ev);
1600 }
1601 }
1602 }
1603
1604 void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
1605 {
1606 u32 base; /* SRAM byte address of event log header */
1607 u32 capacity; /* event log capacity in # entries */
1608 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1609 u32 num_wraps; /* # times uCode wrapped to top of log */
1610 u32 next_entry; /* index of next entry to be written by uCode */
1611 u32 size; /* # entries that we'll print */
1612
1613 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1614 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1615 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1616 return;
1617 }
1618
1619 /* event log header */
1620 capacity = iwl_read_targ_mem(priv, base);
1621 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1622 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1623 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1624
1625 size = num_wraps ? capacity : next_entry;
1626
1627 /* bail out if nothing in log */
1628 if (size == 0) {
1629 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1630 return;
1631 }
1632
1633 IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1634 size, num_wraps);
1635
1636 /* if uCode has wrapped back to top of log, start at the oldest entry,
1637 * i.e the next one that uCode would fill. */
1638 if (num_wraps)
1639 iwl3945_print_event_log(priv, next_entry,
1640 capacity - next_entry, mode);
1641
1642 /* (then/else) start at top of log */
1643 iwl3945_print_event_log(priv, 0, next_entry, mode);
1644
1645 }
1646 #else
1647 void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
1648 {
1649 }
1650
1651 void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
1652 {
1653 }
1654
1655 #endif
1656
1657 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
1658 {
1659 u32 inta, handled = 0;
1660 u32 inta_fh;
1661 unsigned long flags;
1662 #ifdef CONFIG_IWLWIFI_DEBUG
1663 u32 inta_mask;
1664 #endif
1665
1666 spin_lock_irqsave(&priv->lock, flags);
1667
1668 /* Ack/clear/reset pending uCode interrupts.
1669 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1670 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1671 inta = iwl_read32(priv, CSR_INT);
1672 iwl_write32(priv, CSR_INT, inta);
1673
1674 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1675 * Any new interrupts that happen after this, either while we're
1676 * in this tasklet, or later, will show up in next ISR/tasklet. */
1677 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1678 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1679
1680 #ifdef CONFIG_IWLWIFI_DEBUG
1681 if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1682 /* just for debug */
1683 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1684 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1685 inta, inta_mask, inta_fh);
1686 }
1687 #endif
1688
1689 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1690 * atomic, make sure that inta covers all the interrupts that
1691 * we've discovered, even if FH interrupt came in just after
1692 * reading CSR_INT. */
1693 if (inta_fh & CSR39_FH_INT_RX_MASK)
1694 inta |= CSR_INT_BIT_FH_RX;
1695 if (inta_fh & CSR39_FH_INT_TX_MASK)
1696 inta |= CSR_INT_BIT_FH_TX;
1697
1698 /* Now service all interrupt bits discovered above. */
1699 if (inta & CSR_INT_BIT_HW_ERR) {
1700 IWL_ERR(priv, "Hardware error detected. Restarting.\n");
1701
1702 /* Tell the device to stop sending interrupts */
1703 iwl_disable_interrupts(priv);
1704
1705 priv->isr_stats.hw++;
1706 iwl_irq_handle_error(priv);
1707
1708 handled |= CSR_INT_BIT_HW_ERR;
1709
1710 spin_unlock_irqrestore(&priv->lock, flags);
1711
1712 return;
1713 }
1714
1715 #ifdef CONFIG_IWLWIFI_DEBUG
1716 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1717 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1718 if (inta & CSR_INT_BIT_SCD) {
1719 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1720 "the frame/frames.\n");
1721 priv->isr_stats.sch++;
1722 }
1723
1724 /* Alive notification via Rx interrupt will do the real work */
1725 if (inta & CSR_INT_BIT_ALIVE) {
1726 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1727 priv->isr_stats.alive++;
1728 }
1729 }
1730 #endif
1731 /* Safely ignore these bits for debug checks below */
1732 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1733
1734 /* Error detected by uCode */
1735 if (inta & CSR_INT_BIT_SW_ERR) {
1736 IWL_ERR(priv, "Microcode SW error detected. "
1737 "Restarting 0x%X.\n", inta);
1738 priv->isr_stats.sw++;
1739 priv->isr_stats.sw_err = inta;
1740 iwl_irq_handle_error(priv);
1741 handled |= CSR_INT_BIT_SW_ERR;
1742 }
1743
1744 /* uCode wakes up after power-down sleep */
1745 if (inta & CSR_INT_BIT_WAKEUP) {
1746 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1747 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1748 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1749 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1750 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1751 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1752 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1753 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1754
1755 priv->isr_stats.wakeup++;
1756 handled |= CSR_INT_BIT_WAKEUP;
1757 }
1758
1759 /* All uCode command responses, including Tx command responses,
1760 * Rx "responses" (frame-received notification), and other
1761 * notifications from uCode come through here*/
1762 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1763 iwl3945_rx_handle(priv);
1764 priv->isr_stats.rx++;
1765 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1766 }
1767
1768 if (inta & CSR_INT_BIT_FH_TX) {
1769 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1770 priv->isr_stats.tx++;
1771
1772 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
1773 iwl_write_direct32(priv, FH39_TCSR_CREDIT
1774 (FH39_SRVC_CHNL), 0x0);
1775 handled |= CSR_INT_BIT_FH_TX;
1776 }
1777
1778 if (inta & ~handled) {
1779 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1780 priv->isr_stats.unhandled++;
1781 }
1782
1783 if (inta & ~priv->inta_mask) {
1784 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1785 inta & ~priv->inta_mask);
1786 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
1787 }
1788
1789 /* Re-enable all interrupts */
1790 /* only Re-enable if disabled by irq */
1791 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1792 iwl_enable_interrupts(priv);
1793
1794 #ifdef CONFIG_IWLWIFI_DEBUG
1795 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1796 inta = iwl_read32(priv, CSR_INT);
1797 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1798 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1799 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1800 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1801 }
1802 #endif
1803 spin_unlock_irqrestore(&priv->lock, flags);
1804 }
1805
1806 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
1807 enum ieee80211_band band,
1808 u8 is_active, u8 n_probes,
1809 struct iwl3945_scan_channel *scan_ch)
1810 {
1811 struct ieee80211_channel *chan;
1812 const struct ieee80211_supported_band *sband;
1813 const struct iwl_channel_info *ch_info;
1814 u16 passive_dwell = 0;
1815 u16 active_dwell = 0;
1816 int added, i;
1817
1818 sband = iwl_get_hw_mode(priv, band);
1819 if (!sband)
1820 return 0;
1821
1822 active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
1823 passive_dwell = iwl_get_passive_dwell_time(priv, band);
1824
1825 if (passive_dwell <= active_dwell)
1826 passive_dwell = active_dwell + 1;
1827
1828 for (i = 0, added = 0; i < priv->scan_request->n_channels; i++) {
1829 chan = priv->scan_request->channels[i];
1830
1831 if (chan->band != band)
1832 continue;
1833
1834 scan_ch->channel = chan->hw_value;
1835
1836 ch_info = iwl_get_channel_info(priv, band, scan_ch->channel);
1837 if (!is_channel_valid(ch_info)) {
1838 IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n",
1839 scan_ch->channel);
1840 continue;
1841 }
1842
1843 scan_ch->active_dwell = cpu_to_le16(active_dwell);
1844 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
1845 /* If passive , set up for auto-switch
1846 * and use long active_dwell time.
1847 */
1848 if (!is_active || is_channel_passive(ch_info) ||
1849 (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
1850 scan_ch->type = 0; /* passive */
1851 if (IWL_UCODE_API(priv->ucode_ver) == 1)
1852 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
1853 } else {
1854 scan_ch->type = 1; /* active */
1855 }
1856
1857 /* Set direct probe bits. These may be used both for active
1858 * scan channels (probes gets sent right away),
1859 * or for passive channels (probes get se sent only after
1860 * hearing clear Rx packet).*/
1861 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
1862 if (n_probes)
1863 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1864 } else {
1865 /* uCode v1 does not allow setting direct probe bits on
1866 * passive channel. */
1867 if ((scan_ch->type & 1) && n_probes)
1868 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1869 }
1870
1871 /* Set txpower levels to defaults */
1872 scan_ch->tpc.dsp_atten = 110;
1873 /* scan_pwr_info->tpc.dsp_atten; */
1874
1875 /*scan_pwr_info->tpc.tx_gain; */
1876 if (band == IEEE80211_BAND_5GHZ)
1877 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
1878 else {
1879 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
1880 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
1881 * power level:
1882 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
1883 */
1884 }
1885
1886 IWL_DEBUG_SCAN(priv, "Scanning %d [%s %d]\n",
1887 scan_ch->channel,
1888 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
1889 (scan_ch->type & 1) ?
1890 active_dwell : passive_dwell);
1891
1892 scan_ch++;
1893 added++;
1894 }
1895
1896 IWL_DEBUG_SCAN(priv, "total channels to scan %d \n", added);
1897 return added;
1898 }
1899
1900 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
1901 struct ieee80211_rate *rates)
1902 {
1903 int i;
1904
1905 for (i = 0; i < IWL_RATE_COUNT; i++) {
1906 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
1907 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1908 rates[i].hw_value_short = i;
1909 rates[i].flags = 0;
1910 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
1911 /*
1912 * If CCK != 1M then set short preamble rate flag.
1913 */
1914 rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
1915 0 : IEEE80211_RATE_SHORT_PREAMBLE;
1916 }
1917 }
1918 }
1919
1920 /******************************************************************************
1921 *
1922 * uCode download functions
1923 *
1924 ******************************************************************************/
1925
1926 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
1927 {
1928 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1929 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1930 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1931 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1932 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1933 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1934 }
1935
1936 /**
1937 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
1938 * looking at all data.
1939 */
1940 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
1941 {
1942 u32 val;
1943 u32 save_len = len;
1944 int rc = 0;
1945 u32 errcnt;
1946
1947 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1948
1949 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1950 IWL39_RTC_INST_LOWER_BOUND);
1951
1952 errcnt = 0;
1953 for (; len > 0; len -= sizeof(u32), image++) {
1954 /* read data comes through single port, auto-incr addr */
1955 /* NOTE: Use the debugless read so we don't flood kernel log
1956 * if IWL_DL_IO is set */
1957 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1958 if (val != le32_to_cpu(*image)) {
1959 IWL_ERR(priv, "uCode INST section is invalid at "
1960 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1961 save_len - len, val, le32_to_cpu(*image));
1962 rc = -EIO;
1963 errcnt++;
1964 if (errcnt >= 20)
1965 break;
1966 }
1967 }
1968
1969
1970 if (!errcnt)
1971 IWL_DEBUG_INFO(priv,
1972 "ucode image in INSTRUCTION memory is good\n");
1973
1974 return rc;
1975 }
1976
1977
1978 /**
1979 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
1980 * using sample data 100 bytes apart. If these sample points are good,
1981 * it's a pretty good bet that everything between them is good, too.
1982 */
1983 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
1984 {
1985 u32 val;
1986 int rc = 0;
1987 u32 errcnt = 0;
1988 u32 i;
1989
1990 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1991
1992 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
1993 /* read data comes through single port, auto-incr addr */
1994 /* NOTE: Use the debugless read so we don't flood kernel log
1995 * if IWL_DL_IO is set */
1996 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1997 i + IWL39_RTC_INST_LOWER_BOUND);
1998 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1999 if (val != le32_to_cpu(*image)) {
2000 #if 0 /* Enable this if you want to see details */
2001 IWL_ERR(priv, "uCode INST section is invalid at "
2002 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2003 i, val, *image);
2004 #endif
2005 rc = -EIO;
2006 errcnt++;
2007 if (errcnt >= 3)
2008 break;
2009 }
2010 }
2011
2012 return rc;
2013 }
2014
2015
2016 /**
2017 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2018 * and verify its contents
2019 */
2020 static int iwl3945_verify_ucode(struct iwl_priv *priv)
2021 {
2022 __le32 *image;
2023 u32 len;
2024 int rc = 0;
2025
2026 /* Try bootstrap */
2027 image = (__le32 *)priv->ucode_boot.v_addr;
2028 len = priv->ucode_boot.len;
2029 rc = iwl3945_verify_inst_sparse(priv, image, len);
2030 if (rc == 0) {
2031 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2032 return 0;
2033 }
2034
2035 /* Try initialize */
2036 image = (__le32 *)priv->ucode_init.v_addr;
2037 len = priv->ucode_init.len;
2038 rc = iwl3945_verify_inst_sparse(priv, image, len);
2039 if (rc == 0) {
2040 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2041 return 0;
2042 }
2043
2044 /* Try runtime/protocol */
2045 image = (__le32 *)priv->ucode_code.v_addr;
2046 len = priv->ucode_code.len;
2047 rc = iwl3945_verify_inst_sparse(priv, image, len);
2048 if (rc == 0) {
2049 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2050 return 0;
2051 }
2052
2053 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2054
2055 /* Since nothing seems to match, show first several data entries in
2056 * instruction SRAM, so maybe visual inspection will give a clue.
2057 * Selection of bootstrap image (vs. other images) is arbitrary. */
2058 image = (__le32 *)priv->ucode_boot.v_addr;
2059 len = priv->ucode_boot.len;
2060 rc = iwl3945_verify_inst_full(priv, image, len);
2061
2062 return rc;
2063 }
2064
2065 static void iwl3945_nic_start(struct iwl_priv *priv)
2066 {
2067 /* Remove all resets to allow NIC to operate */
2068 iwl_write32(priv, CSR_RESET, 0);
2069 }
2070
2071 /**
2072 * iwl3945_read_ucode - Read uCode images from disk file.
2073 *
2074 * Copy into buffers for card to fetch via bus-mastering
2075 */
2076 static int iwl3945_read_ucode(struct iwl_priv *priv)
2077 {
2078 const struct iwl_ucode_header *ucode;
2079 int ret = -EINVAL, index;
2080 const struct firmware *ucode_raw;
2081 /* firmware file name contains uCode/driver compatibility version */
2082 const char *name_pre = priv->cfg->fw_name_pre;
2083 const unsigned int api_max = priv->cfg->ucode_api_max;
2084 const unsigned int api_min = priv->cfg->ucode_api_min;
2085 char buf[25];
2086 u8 *src;
2087 size_t len;
2088 u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
2089
2090 /* Ask kernel firmware_class module to get the boot firmware off disk.
2091 * request_firmware() is synchronous, file is in memory on return. */
2092 for (index = api_max; index >= api_min; index--) {
2093 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
2094 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
2095 if (ret < 0) {
2096 IWL_ERR(priv, "%s firmware file req failed: %d\n",
2097 buf, ret);
2098 if (ret == -ENOENT)
2099 continue;
2100 else
2101 goto error;
2102 } else {
2103 if (index < api_max)
2104 IWL_ERR(priv, "Loaded firmware %s, "
2105 "which is deprecated. "
2106 " Please use API v%u instead.\n",
2107 buf, api_max);
2108 IWL_DEBUG_INFO(priv, "Got firmware '%s' file "
2109 "(%zd bytes) from disk\n",
2110 buf, ucode_raw->size);
2111 break;
2112 }
2113 }
2114
2115 if (ret < 0)
2116 goto error;
2117
2118 /* Make sure that we got at least our header! */
2119 if (ucode_raw->size < priv->cfg->ops->ucode->get_header_size(1)) {
2120 IWL_ERR(priv, "File size way too small!\n");
2121 ret = -EINVAL;
2122 goto err_release;
2123 }
2124
2125 /* Data from ucode file: header followed by uCode images */
2126 ucode = (struct iwl_ucode_header *)ucode_raw->data;
2127
2128 priv->ucode_ver = le32_to_cpu(ucode->ver);
2129 api_ver = IWL_UCODE_API(priv->ucode_ver);
2130 inst_size = priv->cfg->ops->ucode->get_inst_size(ucode, api_ver);
2131 data_size = priv->cfg->ops->ucode->get_data_size(ucode, api_ver);
2132 init_size = priv->cfg->ops->ucode->get_init_size(ucode, api_ver);
2133 init_data_size =
2134 priv->cfg->ops->ucode->get_init_data_size(ucode, api_ver);
2135 boot_size = priv->cfg->ops->ucode->get_boot_size(ucode, api_ver);
2136 src = priv->cfg->ops->ucode->get_data(ucode, api_ver);
2137
2138 /* api_ver should match the api version forming part of the
2139 * firmware filename ... but we don't check for that and only rely
2140 * on the API version read from firmware header from here on forward */
2141
2142 if (api_ver < api_min || api_ver > api_max) {
2143 IWL_ERR(priv, "Driver unable to support your firmware API. "
2144 "Driver supports v%u, firmware is v%u.\n",
2145 api_max, api_ver);
2146 priv->ucode_ver = 0;
2147 ret = -EINVAL;
2148 goto err_release;
2149 }
2150 if (api_ver != api_max)
2151 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
2152 "got %u. New firmware can be obtained "
2153 "from http://www.intellinuxwireless.org.\n",
2154 api_max, api_ver);
2155
2156 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
2157 IWL_UCODE_MAJOR(priv->ucode_ver),
2158 IWL_UCODE_MINOR(priv->ucode_ver),
2159 IWL_UCODE_API(priv->ucode_ver),
2160 IWL_UCODE_SERIAL(priv->ucode_ver));
2161
2162 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2163 priv->ucode_ver);
2164 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
2165 inst_size);
2166 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
2167 data_size);
2168 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
2169 init_size);
2170 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
2171 init_data_size);
2172 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
2173 boot_size);
2174
2175
2176 /* Verify size of file vs. image size info in file's header */
2177 if (ucode_raw->size != priv->cfg->ops->ucode->get_header_size(api_ver) +
2178 inst_size + data_size + init_size +
2179 init_data_size + boot_size) {
2180
2181 IWL_DEBUG_INFO(priv,
2182 "uCode file size %zd does not match expected size\n",
2183 ucode_raw->size);
2184 ret = -EINVAL;
2185 goto err_release;
2186 }
2187
2188 /* Verify that uCode images will fit in card's SRAM */
2189 if (inst_size > IWL39_MAX_INST_SIZE) {
2190 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
2191 inst_size);
2192 ret = -EINVAL;
2193 goto err_release;
2194 }
2195
2196 if (data_size > IWL39_MAX_DATA_SIZE) {
2197 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
2198 data_size);
2199 ret = -EINVAL;
2200 goto err_release;
2201 }
2202 if (init_size > IWL39_MAX_INST_SIZE) {
2203 IWL_DEBUG_INFO(priv,
2204 "uCode init instr len %d too large to fit in\n",
2205 init_size);
2206 ret = -EINVAL;
2207 goto err_release;
2208 }
2209 if (init_data_size > IWL39_MAX_DATA_SIZE) {
2210 IWL_DEBUG_INFO(priv,
2211 "uCode init data len %d too large to fit in\n",
2212 init_data_size);
2213 ret = -EINVAL;
2214 goto err_release;
2215 }
2216 if (boot_size > IWL39_MAX_BSM_SIZE) {
2217 IWL_DEBUG_INFO(priv,
2218 "uCode boot instr len %d too large to fit in\n",
2219 boot_size);
2220 ret = -EINVAL;
2221 goto err_release;
2222 }
2223
2224 /* Allocate ucode buffers for card's bus-master loading ... */
2225
2226 /* Runtime instructions and 2 copies of data:
2227 * 1) unmodified from disk
2228 * 2) backup cache for save/restore during power-downs */
2229 priv->ucode_code.len = inst_size;
2230 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2231
2232 priv->ucode_data.len = data_size;
2233 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2234
2235 priv->ucode_data_backup.len = data_size;
2236 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2237
2238 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2239 !priv->ucode_data_backup.v_addr)
2240 goto err_pci_alloc;
2241
2242 /* Initialization instructions and data */
2243 if (init_size && init_data_size) {
2244 priv->ucode_init.len = init_size;
2245 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2246
2247 priv->ucode_init_data.len = init_data_size;
2248 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2249
2250 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2251 goto err_pci_alloc;
2252 }
2253
2254 /* Bootstrap (instructions only, no data) */
2255 if (boot_size) {
2256 priv->ucode_boot.len = boot_size;
2257 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2258
2259 if (!priv->ucode_boot.v_addr)
2260 goto err_pci_alloc;
2261 }
2262
2263 /* Copy images into buffers for card's bus-master reads ... */
2264
2265 /* Runtime instructions (first block of data in file) */
2266 len = inst_size;
2267 IWL_DEBUG_INFO(priv,
2268 "Copying (but not loading) uCode instr len %zd\n", len);
2269 memcpy(priv->ucode_code.v_addr, src, len);
2270 src += len;
2271
2272 IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2273 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2274
2275 /* Runtime data (2nd block)
2276 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
2277 len = data_size;
2278 IWL_DEBUG_INFO(priv,
2279 "Copying (but not loading) uCode data len %zd\n", len);
2280 memcpy(priv->ucode_data.v_addr, src, len);
2281 memcpy(priv->ucode_data_backup.v_addr, src, len);
2282 src += len;
2283
2284 /* Initialization instructions (3rd block) */
2285 if (init_size) {
2286 len = init_size;
2287 IWL_DEBUG_INFO(priv,
2288 "Copying (but not loading) init instr len %zd\n", len);
2289 memcpy(priv->ucode_init.v_addr, src, len);
2290 src += len;
2291 }
2292
2293 /* Initialization data (4th block) */
2294 if (init_data_size) {
2295 len = init_data_size;
2296 IWL_DEBUG_INFO(priv,
2297 "Copying (but not loading) init data len %zd\n", len);
2298 memcpy(priv->ucode_init_data.v_addr, src, len);
2299 src += len;
2300 }
2301
2302 /* Bootstrap instructions (5th block) */
2303 len = boot_size;
2304 IWL_DEBUG_INFO(priv,
2305 "Copying (but not loading) boot instr len %zd\n", len);
2306 memcpy(priv->ucode_boot.v_addr, src, len);
2307
2308 /* We have our copies now, allow OS release its copies */
2309 release_firmware(ucode_raw);
2310 return 0;
2311
2312 err_pci_alloc:
2313 IWL_ERR(priv, "failed to allocate pci memory\n");
2314 ret = -ENOMEM;
2315 iwl3945_dealloc_ucode_pci(priv);
2316
2317 err_release:
2318 release_firmware(ucode_raw);
2319
2320 error:
2321 return ret;
2322 }
2323
2324
2325 /**
2326 * iwl3945_set_ucode_ptrs - Set uCode address location
2327 *
2328 * Tell initialization uCode where to find runtime uCode.
2329 *
2330 * BSM registers initially contain pointers to initialization uCode.
2331 * We need to replace them to load runtime uCode inst and data,
2332 * and to save runtime data when powering down.
2333 */
2334 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
2335 {
2336 dma_addr_t pinst;
2337 dma_addr_t pdata;
2338
2339 /* bits 31:0 for 3945 */
2340 pinst = priv->ucode_code.p_addr;
2341 pdata = priv->ucode_data_backup.p_addr;
2342
2343 /* Tell bootstrap uCode where to find image to load */
2344 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2345 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2346 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
2347 priv->ucode_data.len);
2348
2349 /* Inst byte count must be last to set up, bit 31 signals uCode
2350 * that all new ptr/size info is in place */
2351 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
2352 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
2353
2354 IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
2355
2356 return 0;
2357 }
2358
2359 /**
2360 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2361 *
2362 * Called after REPLY_ALIVE notification received from "initialize" uCode.
2363 *
2364 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2365 */
2366 static void iwl3945_init_alive_start(struct iwl_priv *priv)
2367 {
2368 /* Check alive response for "valid" sign from uCode */
2369 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
2370 /* We had an error bringing up the hardware, so take it
2371 * all the way back down so we can try again */
2372 IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n");
2373 goto restart;
2374 }
2375
2376 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2377 * This is a paranoid check, because we would not have gotten the
2378 * "initialize" alive if code weren't properly loaded. */
2379 if (iwl3945_verify_ucode(priv)) {
2380 /* Runtime instruction load was bad;
2381 * take it all the way back down so we can try again */
2382 IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
2383 goto restart;
2384 }
2385
2386 /* Send pointers to protocol/runtime uCode image ... init code will
2387 * load and launch runtime uCode, which will send us another "Alive"
2388 * notification. */
2389 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
2390 if (iwl3945_set_ucode_ptrs(priv)) {
2391 /* Runtime instruction load won't happen;
2392 * take it all the way back down so we can try again */
2393 IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
2394 goto restart;
2395 }
2396 return;
2397
2398 restart:
2399 queue_work(priv->workqueue, &priv->restart);
2400 }
2401
2402 /**
2403 * iwl3945_alive_start - called after REPLY_ALIVE notification received
2404 * from protocol/runtime uCode (initialization uCode's
2405 * Alive gets handled by iwl3945_init_alive_start()).
2406 */
2407 static void iwl3945_alive_start(struct iwl_priv *priv)
2408 {
2409 int thermal_spin = 0;
2410 u32 rfkill;
2411
2412 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2413
2414 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2415 /* We had an error bringing up the hardware, so take it
2416 * all the way back down so we can try again */
2417 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2418 goto restart;
2419 }
2420
2421 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2422 * This is a paranoid check, because we would not have gotten the
2423 * "runtime" alive if code weren't properly loaded. */
2424 if (iwl3945_verify_ucode(priv)) {
2425 /* Runtime instruction load was bad;
2426 * take it all the way back down so we can try again */
2427 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2428 goto restart;
2429 }
2430
2431 iwl_clear_stations_table(priv);
2432
2433 rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
2434 IWL_DEBUG_INFO(priv, "RFKILL status: 0x%x\n", rfkill);
2435
2436 if (rfkill & 0x1) {
2437 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2438 /* if RFKILL is not on, then wait for thermal
2439 * sensor in adapter to kick in */
2440 while (iwl3945_hw_get_temperature(priv) == 0) {
2441 thermal_spin++;
2442 udelay(10);
2443 }
2444
2445 if (thermal_spin)
2446 IWL_DEBUG_INFO(priv, "Thermal calibration took %dus\n",
2447 thermal_spin * 10);
2448 } else
2449 set_bit(STATUS_RF_KILL_HW, &priv->status);
2450
2451 /* After the ALIVE response, we can send commands to 3945 uCode */
2452 set_bit(STATUS_ALIVE, &priv->status);
2453
2454 if (iwl_is_rfkill(priv))
2455 return;
2456
2457 ieee80211_wake_queues(priv->hw);
2458
2459 priv->active_rate = priv->rates_mask;
2460 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2461
2462 iwl_power_update_mode(priv, false);
2463
2464 if (iwl_is_associated(priv)) {
2465 struct iwl3945_rxon_cmd *active_rxon =
2466 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
2467
2468 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2469 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2470 } else {
2471 /* Initialize our rx_config data */
2472 iwl_connection_init_rx_config(priv, priv->iw_mode);
2473 }
2474
2475 /* Configure Bluetooth device coexistence support */
2476 iwl_send_bt_config(priv);
2477
2478 /* Configure the adapter for unassociated operation */
2479 iwlcore_commit_rxon(priv);
2480
2481 iwl3945_reg_txpower_periodic(priv);
2482
2483 iwl_leds_init(priv);
2484
2485 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2486 set_bit(STATUS_READY, &priv->status);
2487 wake_up_interruptible(&priv->wait_command_queue);
2488
2489 /* reassociate for ADHOC mode */
2490 if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
2491 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
2492 priv->vif);
2493 if (beacon)
2494 iwl_mac_beacon_update(priv->hw, beacon);
2495 }
2496
2497 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2498 iwl_set_mode(priv, priv->iw_mode);
2499
2500 return;
2501
2502 restart:
2503 queue_work(priv->workqueue, &priv->restart);
2504 }
2505
2506 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
2507
2508 static void __iwl3945_down(struct iwl_priv *priv)
2509 {
2510 unsigned long flags;
2511 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2512 struct ieee80211_conf *conf = NULL;
2513
2514 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2515
2516 conf = ieee80211_get_hw_conf(priv->hw);
2517
2518 if (!exit_pending)
2519 set_bit(STATUS_EXIT_PENDING, &priv->status);
2520
2521 iwl_clear_stations_table(priv);
2522
2523 /* Unblock any waiting calls */
2524 wake_up_interruptible_all(&priv->wait_command_queue);
2525
2526 /* Wipe out the EXIT_PENDING status bit if we are not actually
2527 * exiting the module */
2528 if (!exit_pending)
2529 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2530
2531 /* stop and reset the on-board processor */
2532 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2533
2534 /* tell the device to stop sending interrupts */
2535 spin_lock_irqsave(&priv->lock, flags);
2536 iwl_disable_interrupts(priv);
2537 spin_unlock_irqrestore(&priv->lock, flags);
2538 iwl_synchronize_irq(priv);
2539
2540 if (priv->mac80211_registered)
2541 ieee80211_stop_queues(priv->hw);
2542
2543 /* If we have not previously called iwl3945_init() then
2544 * clear all bits but the RF Kill bits and return */
2545 if (!iwl_is_init(priv)) {
2546 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2547 STATUS_RF_KILL_HW |
2548 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2549 STATUS_GEO_CONFIGURED |
2550 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2551 STATUS_EXIT_PENDING;
2552 goto exit;
2553 }
2554
2555 /* ...otherwise clear out all the status bits but the RF Kill
2556 * bit and continue taking the NIC down. */
2557 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2558 STATUS_RF_KILL_HW |
2559 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2560 STATUS_GEO_CONFIGURED |
2561 test_bit(STATUS_FW_ERROR, &priv->status) <<
2562 STATUS_FW_ERROR |
2563 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2564 STATUS_EXIT_PENDING;
2565
2566 iwl3945_hw_txq_ctx_stop(priv);
2567 iwl3945_hw_rxq_stop(priv);
2568
2569 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2570 APMG_CLK_VAL_DMA_CLK_RQT);
2571
2572 udelay(5);
2573
2574 /* Stop the device, and put it in low power state */
2575 priv->cfg->ops->lib->apm_ops.stop(priv);
2576
2577 exit:
2578 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2579
2580 if (priv->ibss_beacon)
2581 dev_kfree_skb(priv->ibss_beacon);
2582 priv->ibss_beacon = NULL;
2583
2584 /* clear out any free frames */
2585 iwl3945_clear_free_frames(priv);
2586 }
2587
2588 static void iwl3945_down(struct iwl_priv *priv)
2589 {
2590 mutex_lock(&priv->mutex);
2591 __iwl3945_down(priv);
2592 mutex_unlock(&priv->mutex);
2593
2594 iwl3945_cancel_deferred_work(priv);
2595 }
2596
2597 #define MAX_HW_RESTARTS 5
2598
2599 static int __iwl3945_up(struct iwl_priv *priv)
2600 {
2601 int rc, i;
2602
2603 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2604 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2605 return -EIO;
2606 }
2607
2608 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2609 IWL_ERR(priv, "ucode not available for device bring up\n");
2610 return -EIO;
2611 }
2612
2613 /* If platform's RF_KILL switch is NOT set to KILL */
2614 if (iwl_read32(priv, CSR_GP_CNTRL) &
2615 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2616 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2617 else {
2618 set_bit(STATUS_RF_KILL_HW, &priv->status);
2619 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2620 return -ENODEV;
2621 }
2622
2623 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2624
2625 rc = iwl3945_hw_nic_init(priv);
2626 if (rc) {
2627 IWL_ERR(priv, "Unable to int nic\n");
2628 return rc;
2629 }
2630
2631 /* 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,
2634 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2635
2636 /* clear (again), then enable host interrupts */
2637 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2638 iwl_enable_interrupts(priv);
2639
2640 /* really make sure rfkill handshake bits are cleared */
2641 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2642 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2643
2644 /* Copy original ucode data image from disk into backup cache.
2645 * This will be used to initialize the on-board processor's
2646 * data SRAM for a clean start when the runtime program first loads. */
2647 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2648 priv->ucode_data.len);
2649
2650 /* We return success when we resume from suspend and rf_kill is on. */
2651 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
2652 return 0;
2653
2654 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2655
2656 iwl_clear_stations_table(priv);
2657
2658 /* load bootstrap state machine,
2659 * load bootstrap program into processor's memory,
2660 * prepare to load the "initialize" uCode */
2661 priv->cfg->ops->lib->load_ucode(priv);
2662
2663 if (rc) {
2664 IWL_ERR(priv,
2665 "Unable to set up bootstrap uCode: %d\n", rc);
2666 continue;
2667 }
2668
2669 /* start card; "initialize" will load runtime ucode */
2670 iwl3945_nic_start(priv);
2671
2672 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2673
2674 return 0;
2675 }
2676
2677 set_bit(STATUS_EXIT_PENDING, &priv->status);
2678 __iwl3945_down(priv);
2679 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2680
2681 /* tried to restart and config the device for as long as our
2682 * patience could withstand */
2683 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2684 return -EIO;
2685 }
2686
2687
2688 /*****************************************************************************
2689 *
2690 * Workqueue callbacks
2691 *
2692 *****************************************************************************/
2693
2694 static void iwl3945_bg_init_alive_start(struct work_struct *data)
2695 {
2696 struct iwl_priv *priv =
2697 container_of(data, struct iwl_priv, init_alive_start.work);
2698
2699 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2700 return;
2701
2702 mutex_lock(&priv->mutex);
2703 iwl3945_init_alive_start(priv);
2704 mutex_unlock(&priv->mutex);
2705 }
2706
2707 static void iwl3945_bg_alive_start(struct work_struct *data)
2708 {
2709 struct iwl_priv *priv =
2710 container_of(data, struct iwl_priv, alive_start.work);
2711
2712 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2713 return;
2714
2715 mutex_lock(&priv->mutex);
2716 iwl3945_alive_start(priv);
2717 mutex_unlock(&priv->mutex);
2718 }
2719
2720 /*
2721 * 3945 cannot interrupt driver when hardware rf kill switch toggles;
2722 * driver must poll CSR_GP_CNTRL_REG register for change. This register
2723 * *is* readable even when device has been SW_RESET into low power mode
2724 * (e.g. during RF KILL).
2725 */
2726 static void iwl3945_rfkill_poll(struct work_struct *data)
2727 {
2728 struct iwl_priv *priv =
2729 container_of(data, struct iwl_priv, rfkill_poll.work);
2730 bool old_rfkill = test_bit(STATUS_RF_KILL_HW, &priv->status);
2731 bool new_rfkill = !(iwl_read32(priv, CSR_GP_CNTRL)
2732 & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW);
2733
2734 if (new_rfkill != old_rfkill) {
2735 if (new_rfkill)
2736 set_bit(STATUS_RF_KILL_HW, &priv->status);
2737 else
2738 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2739
2740 wiphy_rfkill_set_hw_state(priv->hw->wiphy, new_rfkill);
2741
2742 IWL_DEBUG_RF_KILL(priv, "RF_KILL bit toggled to %s.\n",
2743 new_rfkill ? "disable radio" : "enable radio");
2744 }
2745
2746 /* Keep this running, even if radio now enabled. This will be
2747 * cancelled in mac_start() if system decides to start again */
2748 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
2749 round_jiffies_relative(2 * HZ));
2750
2751 }
2752
2753 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
2754 static void iwl3945_bg_request_scan(struct work_struct *data)
2755 {
2756 struct iwl_priv *priv =
2757 container_of(data, struct iwl_priv, request_scan);
2758 struct iwl_host_cmd cmd = {
2759 .id = REPLY_SCAN_CMD,
2760 .len = sizeof(struct iwl3945_scan_cmd),
2761 .flags = CMD_SIZE_HUGE,
2762 };
2763 int rc = 0;
2764 struct iwl3945_scan_cmd *scan;
2765 struct ieee80211_conf *conf = NULL;
2766 u8 n_probes = 0;
2767 enum ieee80211_band band;
2768 bool is_active = false;
2769
2770 conf = ieee80211_get_hw_conf(priv->hw);
2771
2772 mutex_lock(&priv->mutex);
2773
2774 cancel_delayed_work(&priv->scan_check);
2775
2776 if (!iwl_is_ready(priv)) {
2777 IWL_WARN(priv, "request scan called when driver not ready.\n");
2778 goto done;
2779 }
2780
2781 /* Make sure the scan wasn't canceled before this queued work
2782 * was given the chance to run... */
2783 if (!test_bit(STATUS_SCANNING, &priv->status))
2784 goto done;
2785
2786 /* This should never be called or scheduled if there is currently
2787 * a scan active in the hardware. */
2788 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
2789 IWL_DEBUG_INFO(priv, "Multiple concurrent scan requests "
2790 "Ignoring second request.\n");
2791 rc = -EIO;
2792 goto done;
2793 }
2794
2795 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2796 IWL_DEBUG_SCAN(priv, "Aborting scan due to device shutdown\n");
2797 goto done;
2798 }
2799
2800 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2801 IWL_DEBUG_HC(priv,
2802 "Scan request while abort pending. Queuing.\n");
2803 goto done;
2804 }
2805
2806 if (iwl_is_rfkill(priv)) {
2807 IWL_DEBUG_HC(priv, "Aborting scan due to RF Kill activation\n");
2808 goto done;
2809 }
2810
2811 if (!test_bit(STATUS_READY, &priv->status)) {
2812 IWL_DEBUG_HC(priv,
2813 "Scan request while uninitialized. Queuing.\n");
2814 goto done;
2815 }
2816
2817 if (!priv->scan_bands) {
2818 IWL_DEBUG_HC(priv, "Aborting scan due to no requested bands\n");
2819 goto done;
2820 }
2821
2822 if (!priv->scan) {
2823 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
2824 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
2825 if (!priv->scan) {
2826 rc = -ENOMEM;
2827 goto done;
2828 }
2829 }
2830 scan = priv->scan;
2831 memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
2832
2833 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
2834 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
2835
2836 if (iwl_is_associated(priv)) {
2837 u16 interval = 0;
2838 u32 extra;
2839 u32 suspend_time = 100;
2840 u32 scan_suspend_time = 100;
2841 unsigned long flags;
2842
2843 IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
2844
2845 spin_lock_irqsave(&priv->lock, flags);
2846 interval = priv->beacon_int;
2847 spin_unlock_irqrestore(&priv->lock, flags);
2848
2849 scan->suspend_time = 0;
2850 scan->max_out_time = cpu_to_le32(200 * 1024);
2851 if (!interval)
2852 interval = suspend_time;
2853 /*
2854 * suspend time format:
2855 * 0-19: beacon interval in usec (time before exec.)
2856 * 20-23: 0
2857 * 24-31: number of beacons (suspend between channels)
2858 */
2859
2860 extra = (suspend_time / interval) << 24;
2861 scan_suspend_time = 0xFF0FFFFF &
2862 (extra | ((suspend_time % interval) * 1024));
2863
2864 scan->suspend_time = cpu_to_le32(scan_suspend_time);
2865 IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
2866 scan_suspend_time, interval);
2867 }
2868
2869 if (priv->scan_request->n_ssids) {
2870 int i, p = 0;
2871 IWL_DEBUG_SCAN(priv, "Kicking off active scan\n");
2872 for (i = 0; i < priv->scan_request->n_ssids; i++) {
2873 /* always does wildcard anyway */
2874 if (!priv->scan_request->ssids[i].ssid_len)
2875 continue;
2876 scan->direct_scan[p].id = WLAN_EID_SSID;
2877 scan->direct_scan[p].len =
2878 priv->scan_request->ssids[i].ssid_len;
2879 memcpy(scan->direct_scan[p].ssid,
2880 priv->scan_request->ssids[i].ssid,
2881 priv->scan_request->ssids[i].ssid_len);
2882 n_probes++;
2883 p++;
2884 }
2885 is_active = true;
2886 } else
2887 IWL_DEBUG_SCAN(priv, "Kicking off passive scan.\n");
2888
2889 /* We don't build a direct scan probe request; the uCode will do
2890 * that based on the direct_mask added to each channel entry */
2891 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
2892 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
2893 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2894
2895 /* flags + rate selection */
2896
2897 if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
2898 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
2899 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
2900 scan->good_CRC_th = 0;
2901 band = IEEE80211_BAND_2GHZ;
2902 } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
2903 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
2904 /*
2905 * If active scaning is requested but a certain channel
2906 * is marked passive, we can do active scanning if we
2907 * detect transmissions.
2908 */
2909 scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH : 0;
2910 band = IEEE80211_BAND_5GHZ;
2911 } else {
2912 IWL_WARN(priv, "Invalid scan band count\n");
2913 goto done;
2914 }
2915
2916 scan->tx_cmd.len = cpu_to_le16(
2917 iwl_fill_probe_req(priv,
2918 (struct ieee80211_mgmt *)scan->data,
2919 priv->scan_request->ie,
2920 priv->scan_request->ie_len,
2921 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
2922
2923 /* select Rx antennas */
2924 scan->flags |= iwl3945_get_antenna_flags(priv);
2925
2926 if (iwl_is_monitor_mode(priv))
2927 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
2928
2929 scan->channel_count =
2930 iwl3945_get_channels_for_scan(priv, band, is_active, n_probes,
2931 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
2932
2933 if (scan->channel_count == 0) {
2934 IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
2935 goto done;
2936 }
2937
2938 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
2939 scan->channel_count * sizeof(struct iwl3945_scan_channel);
2940 cmd.data = scan;
2941 scan->len = cpu_to_le16(cmd.len);
2942
2943 set_bit(STATUS_SCAN_HW, &priv->status);
2944 rc = iwl_send_cmd_sync(priv, &cmd);
2945 if (rc)
2946 goto done;
2947
2948 queue_delayed_work(priv->workqueue, &priv->scan_check,
2949 IWL_SCAN_CHECK_WATCHDOG);
2950
2951 mutex_unlock(&priv->mutex);
2952 return;
2953
2954 done:
2955 /* can not perform scan make sure we clear scanning
2956 * bits from status so next scan request can be performed.
2957 * if we dont clear scanning status bit here all next scan
2958 * will fail
2959 */
2960 clear_bit(STATUS_SCAN_HW, &priv->status);
2961 clear_bit(STATUS_SCANNING, &priv->status);
2962
2963 /* inform mac80211 scan aborted */
2964 queue_work(priv->workqueue, &priv->scan_completed);
2965 mutex_unlock(&priv->mutex);
2966 }
2967
2968 static void iwl3945_bg_up(struct work_struct *data)
2969 {
2970 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2971
2972 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2973 return;
2974
2975 mutex_lock(&priv->mutex);
2976 __iwl3945_up(priv);
2977 mutex_unlock(&priv->mutex);
2978 }
2979
2980 static void iwl3945_bg_restart(struct work_struct *data)
2981 {
2982 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2983
2984 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2985 return;
2986
2987 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
2988 mutex_lock(&priv->mutex);
2989 priv->vif = NULL;
2990 priv->is_open = 0;
2991 mutex_unlock(&priv->mutex);
2992 iwl3945_down(priv);
2993 ieee80211_restart_hw(priv->hw);
2994 } else {
2995 iwl3945_down(priv);
2996 queue_work(priv->workqueue, &priv->up);
2997 }
2998 }
2999
3000 static void iwl3945_bg_rx_replenish(struct work_struct *data)
3001 {
3002 struct iwl_priv *priv =
3003 container_of(data, struct iwl_priv, rx_replenish);
3004
3005 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3006 return;
3007
3008 mutex_lock(&priv->mutex);
3009 iwl3945_rx_replenish(priv);
3010 mutex_unlock(&priv->mutex);
3011 }
3012
3013 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3014
3015 void iwl3945_post_associate(struct iwl_priv *priv)
3016 {
3017 int rc = 0;
3018 struct ieee80211_conf *conf = NULL;
3019
3020 if (priv->iw_mode == NL80211_IFTYPE_AP) {
3021 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
3022 return;
3023 }
3024
3025
3026 IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3027 priv->assoc_id, priv->active_rxon.bssid_addr);
3028
3029 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3030 return;
3031
3032 if (!priv->vif || !priv->is_open)
3033 return;
3034
3035 iwl_scan_cancel_timeout(priv, 200);
3036
3037 conf = ieee80211_get_hw_conf(priv->hw);
3038
3039 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3040 iwlcore_commit_rxon(priv);
3041
3042 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3043 iwl_setup_rxon_timing(priv);
3044 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3045 sizeof(priv->rxon_timing), &priv->rxon_timing);
3046 if (rc)
3047 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3048 "Attempting to continue.\n");
3049
3050 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3051
3052 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3053
3054 IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3055 priv->assoc_id, priv->beacon_int);
3056
3057 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3058 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3059 else
3060 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3061
3062 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3063 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3064 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3065 else
3066 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3067
3068 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3069 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3070
3071 }
3072
3073 iwlcore_commit_rxon(priv);
3074
3075 switch (priv->iw_mode) {
3076 case NL80211_IFTYPE_STATION:
3077 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
3078 break;
3079
3080 case NL80211_IFTYPE_ADHOC:
3081
3082 priv->assoc_id = 1;
3083 iwl_add_station(priv, priv->bssid, 0, CMD_SYNC, NULL);
3084 iwl3945_sync_sta(priv, IWL_STA_ID,
3085 (priv->band == IEEE80211_BAND_5GHZ) ?
3086 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
3087 CMD_ASYNC);
3088 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
3089 iwl3945_send_beacon_cmd(priv);
3090
3091 break;
3092
3093 default:
3094 IWL_ERR(priv, "%s Should not be called in %d mode\n",
3095 __func__, priv->iw_mode);
3096 break;
3097 }
3098
3099 iwl_activate_qos(priv, 0);
3100
3101 /* we have just associated, don't start scan too early */
3102 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
3103 }
3104
3105 /*****************************************************************************
3106 *
3107 * mac80211 entry point functions
3108 *
3109 *****************************************************************************/
3110
3111 #define UCODE_READY_TIMEOUT (2 * HZ)
3112
3113 static int iwl3945_mac_start(struct ieee80211_hw *hw)
3114 {
3115 struct iwl_priv *priv = hw->priv;
3116 int ret;
3117
3118 IWL_DEBUG_MAC80211(priv, "enter\n");
3119
3120 /* we should be verifying the device is ready to be opened */
3121 mutex_lock(&priv->mutex);
3122
3123 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3124 * ucode filename and max sizes are card-specific. */
3125
3126 if (!priv->ucode_code.len) {
3127 ret = iwl3945_read_ucode(priv);
3128 if (ret) {
3129 IWL_ERR(priv, "Could not read microcode: %d\n", ret);
3130 mutex_unlock(&priv->mutex);
3131 goto out_release_irq;
3132 }
3133 }
3134
3135 ret = __iwl3945_up(priv);
3136
3137 mutex_unlock(&priv->mutex);
3138
3139 if (ret)
3140 goto out_release_irq;
3141
3142 IWL_DEBUG_INFO(priv, "Start UP work.\n");
3143
3144 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3145 * mac80211 will not be run successfully. */
3146 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3147 test_bit(STATUS_READY, &priv->status),
3148 UCODE_READY_TIMEOUT);
3149 if (!ret) {
3150 if (!test_bit(STATUS_READY, &priv->status)) {
3151 IWL_ERR(priv,
3152 "Wait for START_ALIVE timeout after %dms.\n",
3153 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3154 ret = -ETIMEDOUT;
3155 goto out_release_irq;
3156 }
3157 }
3158
3159 /* ucode is running and will send rfkill notifications,
3160 * no need to poll the killswitch state anymore */
3161 cancel_delayed_work(&priv->rfkill_poll);
3162
3163 iwl_led_start(priv);
3164
3165 priv->is_open = 1;
3166 IWL_DEBUG_MAC80211(priv, "leave\n");
3167 return 0;
3168
3169 out_release_irq:
3170 priv->is_open = 0;
3171 IWL_DEBUG_MAC80211(priv, "leave - failed\n");
3172 return ret;
3173 }
3174
3175 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
3176 {
3177 struct iwl_priv *priv = hw->priv;
3178
3179 IWL_DEBUG_MAC80211(priv, "enter\n");
3180
3181 if (!priv->is_open) {
3182 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
3183 return;
3184 }
3185
3186 priv->is_open = 0;
3187
3188 if (iwl_is_ready_rf(priv)) {
3189 /* stop mac, cancel any scan request and clear
3190 * RXON_FILTER_ASSOC_MSK BIT
3191 */
3192 mutex_lock(&priv->mutex);
3193 iwl_scan_cancel_timeout(priv, 100);
3194 mutex_unlock(&priv->mutex);
3195 }
3196
3197 iwl3945_down(priv);
3198
3199 flush_workqueue(priv->workqueue);
3200
3201 /* start polling the killswitch state again */
3202 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
3203 round_jiffies_relative(2 * HZ));
3204
3205 IWL_DEBUG_MAC80211(priv, "leave\n");
3206 }
3207
3208 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3209 {
3210 struct iwl_priv *priv = hw->priv;
3211
3212 IWL_DEBUG_MAC80211(priv, "enter\n");
3213
3214 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3215 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3216
3217 if (iwl3945_tx_skb(priv, skb))
3218 dev_kfree_skb_any(skb);
3219
3220 IWL_DEBUG_MAC80211(priv, "leave\n");
3221 return NETDEV_TX_OK;
3222 }
3223
3224 void iwl3945_config_ap(struct iwl_priv *priv)
3225 {
3226 int rc = 0;
3227
3228 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3229 return;
3230
3231 /* The following should be done only at AP bring up */
3232 if (!(iwl_is_associated(priv))) {
3233
3234 /* RXON - unassoc (to set timing command) */
3235 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3236 iwlcore_commit_rxon(priv);
3237
3238 /* RXON Timing */
3239 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3240 iwl_setup_rxon_timing(priv);
3241 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3242 sizeof(priv->rxon_timing),
3243 &priv->rxon_timing);
3244 if (rc)
3245 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3246 "Attempting to continue.\n");
3247
3248 /* FIXME: what should be the assoc_id for AP? */
3249 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3250 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3251 priv->staging_rxon.flags |=
3252 RXON_FLG_SHORT_PREAMBLE_MSK;
3253 else
3254 priv->staging_rxon.flags &=
3255 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3256
3257 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3258 if (priv->assoc_capability &
3259 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3260 priv->staging_rxon.flags |=
3261 RXON_FLG_SHORT_SLOT_MSK;
3262 else
3263 priv->staging_rxon.flags &=
3264 ~RXON_FLG_SHORT_SLOT_MSK;
3265
3266 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3267 priv->staging_rxon.flags &=
3268 ~RXON_FLG_SHORT_SLOT_MSK;
3269 }
3270 /* restore RXON assoc */
3271 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3272 iwlcore_commit_rxon(priv);
3273 iwl_add_station(priv, iwl_bcast_addr, 0, CMD_SYNC, NULL);
3274 }
3275 iwl3945_send_beacon_cmd(priv);
3276
3277 /* FIXME - we need to add code here to detect a totally new
3278 * configuration, reset the AP, unassoc, rxon timing, assoc,
3279 * clear sta table, add BCAST sta... */
3280 }
3281
3282 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3283 struct ieee80211_vif *vif,
3284 struct ieee80211_sta *sta,
3285 struct ieee80211_key_conf *key)
3286 {
3287 struct iwl_priv *priv = hw->priv;
3288 const u8 *addr;
3289 int ret = 0;
3290 u8 sta_id = IWL_INVALID_STATION;
3291 u8 static_key;
3292
3293 IWL_DEBUG_MAC80211(priv, "enter\n");
3294
3295 if (iwl3945_mod_params.sw_crypto) {
3296 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
3297 return -EOPNOTSUPP;
3298 }
3299
3300 addr = sta ? sta->addr : iwl_bcast_addr;
3301 static_key = !iwl_is_associated(priv);
3302
3303 if (!static_key) {
3304 sta_id = iwl_find_station(priv, addr);
3305 if (sta_id == IWL_INVALID_STATION) {
3306 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
3307 addr);
3308 return -EINVAL;
3309 }
3310 }
3311
3312 mutex_lock(&priv->mutex);
3313 iwl_scan_cancel_timeout(priv, 100);
3314 mutex_unlock(&priv->mutex);
3315
3316 switch (cmd) {
3317 case SET_KEY:
3318 if (static_key)
3319 ret = iwl3945_set_static_key(priv, key);
3320 else
3321 ret = iwl3945_set_dynamic_key(priv, key, sta_id);
3322 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
3323 break;
3324 case DISABLE_KEY:
3325 if (static_key)
3326 ret = iwl3945_remove_static_key(priv);
3327 else
3328 ret = iwl3945_clear_sta_key_info(priv, sta_id);
3329 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
3330 break;
3331 default:
3332 ret = -EINVAL;
3333 }
3334
3335 IWL_DEBUG_MAC80211(priv, "leave\n");
3336
3337 return ret;
3338 }
3339
3340 /*****************************************************************************
3341 *
3342 * sysfs attributes
3343 *
3344 *****************************************************************************/
3345
3346 #ifdef CONFIG_IWLWIFI_DEBUG
3347
3348 /*
3349 * The following adds a new attribute to the sysfs representation
3350 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3351 * used for controlling the debug level.
3352 *
3353 * See the level definitions in iwl for details.
3354 *
3355 * The debug_level being managed using sysfs below is a per device debug
3356 * level that is used instead of the global debug level if it (the per
3357 * device debug level) is set.
3358 */
3359 static ssize_t show_debug_level(struct device *d,
3360 struct device_attribute *attr, char *buf)
3361 {
3362 struct iwl_priv *priv = dev_get_drvdata(d);
3363 return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
3364 }
3365 static ssize_t store_debug_level(struct device *d,
3366 struct device_attribute *attr,
3367 const char *buf, size_t count)
3368 {
3369 struct iwl_priv *priv = dev_get_drvdata(d);
3370 unsigned long val;
3371 int ret;
3372
3373 ret = strict_strtoul(buf, 0, &val);
3374 if (ret)
3375 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
3376 else {
3377 priv->debug_level = val;
3378 if (iwl_alloc_traffic_mem(priv))
3379 IWL_ERR(priv,
3380 "Not enough memory to generate traffic log\n");
3381 }
3382 return strnlen(buf, count);
3383 }
3384
3385 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3386 show_debug_level, store_debug_level);
3387
3388 #endif /* CONFIG_IWLWIFI_DEBUG */
3389
3390 static ssize_t show_temperature(struct device *d,
3391 struct device_attribute *attr, char *buf)
3392 {
3393 struct iwl_priv *priv = dev_get_drvdata(d);
3394
3395 if (!iwl_is_alive(priv))
3396 return -EAGAIN;
3397
3398 return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
3399 }
3400
3401 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3402
3403 static ssize_t show_tx_power(struct device *d,
3404 struct device_attribute *attr, char *buf)
3405 {
3406 struct iwl_priv *priv = dev_get_drvdata(d);
3407 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3408 }
3409
3410 static ssize_t store_tx_power(struct device *d,
3411 struct device_attribute *attr,
3412 const char *buf, size_t count)
3413 {
3414 struct iwl_priv *priv = dev_get_drvdata(d);
3415 char *p = (char *)buf;
3416 u32 val;
3417
3418 val = simple_strtoul(p, &p, 10);
3419 if (p == buf)
3420 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
3421 else
3422 iwl3945_hw_reg_set_txpower(priv, val);
3423
3424 return count;
3425 }
3426
3427 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3428
3429 static ssize_t show_flags(struct device *d,
3430 struct device_attribute *attr, char *buf)
3431 {
3432 struct iwl_priv *priv = dev_get_drvdata(d);
3433
3434 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3435 }
3436
3437 static ssize_t store_flags(struct device *d,
3438 struct device_attribute *attr,
3439 const char *buf, size_t count)
3440 {
3441 struct iwl_priv *priv = dev_get_drvdata(d);
3442 u32 flags = simple_strtoul(buf, NULL, 0);
3443
3444 mutex_lock(&priv->mutex);
3445 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3446 /* Cancel any currently running scans... */
3447 if (iwl_scan_cancel_timeout(priv, 100))
3448 IWL_WARN(priv, "Could not cancel scan.\n");
3449 else {
3450 IWL_DEBUG_INFO(priv, "Committing rxon.flags = 0x%04X\n",
3451 flags);
3452 priv->staging_rxon.flags = cpu_to_le32(flags);
3453 iwlcore_commit_rxon(priv);
3454 }
3455 }
3456 mutex_unlock(&priv->mutex);
3457
3458 return count;
3459 }
3460
3461 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3462
3463 static ssize_t show_filter_flags(struct device *d,
3464 struct device_attribute *attr, char *buf)
3465 {
3466 struct iwl_priv *priv = dev_get_drvdata(d);
3467
3468 return sprintf(buf, "0x%04X\n",
3469 le32_to_cpu(priv->active_rxon.filter_flags));
3470 }
3471
3472 static ssize_t store_filter_flags(struct device *d,
3473 struct device_attribute *attr,
3474 const char *buf, size_t count)
3475 {
3476 struct iwl_priv *priv = dev_get_drvdata(d);
3477 u32 filter_flags = simple_strtoul(buf, NULL, 0);
3478
3479 mutex_lock(&priv->mutex);
3480 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3481 /* Cancel any currently running scans... */
3482 if (iwl_scan_cancel_timeout(priv, 100))
3483 IWL_WARN(priv, "Could not cancel scan.\n");
3484 else {
3485 IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
3486 "0x%04X\n", filter_flags);
3487 priv->staging_rxon.filter_flags =
3488 cpu_to_le32(filter_flags);
3489 iwlcore_commit_rxon(priv);
3490 }
3491 }
3492 mutex_unlock(&priv->mutex);
3493
3494 return count;
3495 }
3496
3497 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3498 store_filter_flags);
3499
3500 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3501
3502 static ssize_t show_measurement(struct device *d,
3503 struct device_attribute *attr, char *buf)
3504 {
3505 struct iwl_priv *priv = dev_get_drvdata(d);
3506 struct iwl_spectrum_notification measure_report;
3507 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3508 u8 *data = (u8 *)&measure_report;
3509 unsigned long flags;
3510
3511 spin_lock_irqsave(&priv->lock, flags);
3512 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3513 spin_unlock_irqrestore(&priv->lock, flags);
3514 return 0;
3515 }
3516 memcpy(&measure_report, &priv->measure_report, size);
3517 priv->measurement_status = 0;
3518 spin_unlock_irqrestore(&priv->lock, flags);
3519
3520 while (size && (PAGE_SIZE - len)) {
3521 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3522 PAGE_SIZE - len, 1);
3523 len = strlen(buf);
3524 if (PAGE_SIZE - len)
3525 buf[len++] = '\n';
3526
3527 ofs += 16;
3528 size -= min(size, 16U);
3529 }
3530
3531 return len;
3532 }
3533
3534 static ssize_t store_measurement(struct device *d,
3535 struct device_attribute *attr,
3536 const char *buf, size_t count)
3537 {
3538 struct iwl_priv *priv = dev_get_drvdata(d);
3539 struct ieee80211_measurement_params params = {
3540 .channel = le16_to_cpu(priv->active_rxon.channel),
3541 .start_time = cpu_to_le64(priv->last_tsf),
3542 .duration = cpu_to_le16(1),
3543 };
3544 u8 type = IWL_MEASURE_BASIC;
3545 u8 buffer[32];
3546 u8 channel;
3547
3548 if (count) {
3549 char *p = buffer;
3550 strncpy(buffer, buf, min(sizeof(buffer), count));
3551 channel = simple_strtoul(p, NULL, 0);
3552 if (channel)
3553 params.channel = channel;
3554
3555 p = buffer;
3556 while (*p && *p != ' ')
3557 p++;
3558 if (*p)
3559 type = simple_strtoul(p + 1, NULL, 0);
3560 }
3561
3562 IWL_DEBUG_INFO(priv, "Invoking measurement of type %d on "
3563 "channel %d (for '%s')\n", type, params.channel, buf);
3564 iwl3945_get_measurement(priv, &params, type);
3565
3566 return count;
3567 }
3568
3569 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3570 show_measurement, store_measurement);
3571 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
3572
3573 static ssize_t store_retry_rate(struct device *d,
3574 struct device_attribute *attr,
3575 const char *buf, size_t count)
3576 {
3577 struct iwl_priv *priv = dev_get_drvdata(d);
3578
3579 priv->retry_rate = simple_strtoul(buf, NULL, 0);
3580 if (priv->retry_rate <= 0)
3581 priv->retry_rate = 1;
3582
3583 return count;
3584 }
3585
3586 static ssize_t show_retry_rate(struct device *d,
3587 struct device_attribute *attr, char *buf)
3588 {
3589 struct iwl_priv *priv = dev_get_drvdata(d);
3590 return sprintf(buf, "%d", priv->retry_rate);
3591 }
3592
3593 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3594 store_retry_rate);
3595
3596
3597 static ssize_t show_channels(struct device *d,
3598 struct device_attribute *attr, char *buf)
3599 {
3600 /* all this shit doesn't belong into sysfs anyway */
3601 return 0;
3602 }
3603
3604 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3605
3606 static ssize_t show_statistics(struct device *d,
3607 struct device_attribute *attr, char *buf)
3608 {
3609 struct iwl_priv *priv = dev_get_drvdata(d);
3610 u32 size = sizeof(struct iwl3945_notif_statistics);
3611 u32 len = 0, ofs = 0;
3612 u8 *data = (u8 *)&priv->statistics_39;
3613 int rc = 0;
3614
3615 if (!iwl_is_alive(priv))
3616 return -EAGAIN;
3617
3618 mutex_lock(&priv->mutex);
3619 rc = iwl_send_statistics_request(priv, 0);
3620 mutex_unlock(&priv->mutex);
3621
3622 if (rc) {
3623 len = sprintf(buf,
3624 "Error sending statistics request: 0x%08X\n", rc);
3625 return len;
3626 }
3627
3628 while (size && (PAGE_SIZE - len)) {
3629 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3630 PAGE_SIZE - len, 1);
3631 len = strlen(buf);
3632 if (PAGE_SIZE - len)
3633 buf[len++] = '\n';
3634
3635 ofs += 16;
3636 size -= min(size, 16U);
3637 }
3638
3639 return len;
3640 }
3641
3642 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3643
3644 static ssize_t show_antenna(struct device *d,
3645 struct device_attribute *attr, char *buf)
3646 {
3647 struct iwl_priv *priv = dev_get_drvdata(d);
3648
3649 if (!iwl_is_alive(priv))
3650 return -EAGAIN;
3651
3652 return sprintf(buf, "%d\n", iwl3945_mod_params.antenna);
3653 }
3654
3655 static ssize_t store_antenna(struct device *d,
3656 struct device_attribute *attr,
3657 const char *buf, size_t count)
3658 {
3659 struct iwl_priv *priv __maybe_unused = dev_get_drvdata(d);
3660 int ant;
3661
3662 if (count == 0)
3663 return 0;
3664
3665 if (sscanf(buf, "%1i", &ant) != 1) {
3666 IWL_DEBUG_INFO(priv, "not in hex or decimal form.\n");
3667 return count;
3668 }
3669
3670 if ((ant >= 0) && (ant <= 2)) {
3671 IWL_DEBUG_INFO(priv, "Setting antenna select to %d.\n", ant);
3672 iwl3945_mod_params.antenna = (enum iwl3945_antenna)ant;
3673 } else
3674 IWL_DEBUG_INFO(priv, "Bad antenna select value %d.\n", ant);
3675
3676
3677 return count;
3678 }
3679
3680 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
3681
3682 static ssize_t show_status(struct device *d,
3683 struct device_attribute *attr, char *buf)
3684 {
3685 struct iwl_priv *priv = dev_get_drvdata(d);
3686 if (!iwl_is_alive(priv))
3687 return -EAGAIN;
3688 return sprintf(buf, "0x%08x\n", (int)priv->status);
3689 }
3690
3691 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3692
3693 static ssize_t dump_error_log(struct device *d,
3694 struct device_attribute *attr,
3695 const char *buf, size_t count)
3696 {
3697 struct iwl_priv *priv = dev_get_drvdata(d);
3698 char *p = (char *)buf;
3699
3700 if (p[0] == '1')
3701 iwl3945_dump_nic_error_log(priv);
3702
3703 return strnlen(buf, count);
3704 }
3705
3706 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
3707
3708 /*****************************************************************************
3709 *
3710 * driver setup and tear down
3711 *
3712 *****************************************************************************/
3713
3714 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
3715 {
3716 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3717
3718 init_waitqueue_head(&priv->wait_command_queue);
3719
3720 INIT_WORK(&priv->up, iwl3945_bg_up);
3721 INIT_WORK(&priv->restart, iwl3945_bg_restart);
3722 INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
3723 INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
3724 INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
3725 INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
3726 INIT_DELAYED_WORK(&priv->rfkill_poll, iwl3945_rfkill_poll);
3727 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
3728 INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
3729 INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
3730 INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
3731
3732 iwl3945_hw_setup_deferred_work(priv);
3733
3734 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3735 iwl3945_irq_tasklet, (unsigned long)priv);
3736 }
3737
3738 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
3739 {
3740 iwl3945_hw_cancel_deferred_work(priv);
3741
3742 cancel_delayed_work_sync(&priv->init_alive_start);
3743 cancel_delayed_work(&priv->scan_check);
3744 cancel_delayed_work(&priv->alive_start);
3745 cancel_work_sync(&priv->beacon_update);
3746 }
3747
3748 static struct attribute *iwl3945_sysfs_entries[] = {
3749 &dev_attr_antenna.attr,
3750 &dev_attr_channels.attr,
3751 &dev_attr_dump_errors.attr,
3752 &dev_attr_flags.attr,
3753 &dev_attr_filter_flags.attr,
3754 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3755 &dev_attr_measurement.attr,
3756 #endif
3757 &dev_attr_retry_rate.attr,
3758 &dev_attr_statistics.attr,
3759 &dev_attr_status.attr,
3760 &dev_attr_temperature.attr,
3761 &dev_attr_tx_power.attr,
3762 #ifdef CONFIG_IWLWIFI_DEBUG
3763 &dev_attr_debug_level.attr,
3764 #endif
3765 NULL
3766 };
3767
3768 static struct attribute_group iwl3945_attribute_group = {
3769 .name = NULL, /* put in device directory */
3770 .attrs = iwl3945_sysfs_entries,
3771 };
3772
3773 static struct ieee80211_ops iwl3945_hw_ops = {
3774 .tx = iwl3945_mac_tx,
3775 .start = iwl3945_mac_start,
3776 .stop = iwl3945_mac_stop,
3777 .add_interface = iwl_mac_add_interface,
3778 .remove_interface = iwl_mac_remove_interface,
3779 .config = iwl_mac_config,
3780 .configure_filter = iwl_configure_filter,
3781 .set_key = iwl3945_mac_set_key,
3782 .get_tx_stats = iwl_mac_get_tx_stats,
3783 .conf_tx = iwl_mac_conf_tx,
3784 .reset_tsf = iwl_mac_reset_tsf,
3785 .bss_info_changed = iwl_bss_info_changed,
3786 .hw_scan = iwl_mac_hw_scan
3787 };
3788
3789 static int iwl3945_init_drv(struct iwl_priv *priv)
3790 {
3791 int ret;
3792 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
3793
3794 priv->retry_rate = 1;
3795 priv->ibss_beacon = NULL;
3796
3797 spin_lock_init(&priv->lock);
3798 spin_lock_init(&priv->sta_lock);
3799 spin_lock_init(&priv->hcmd_lock);
3800
3801 INIT_LIST_HEAD(&priv->free_frames);
3802
3803 mutex_init(&priv->mutex);
3804
3805 /* Clear the driver's (not device's) station table */
3806 iwl_clear_stations_table(priv);
3807
3808 priv->data_retry_limit = -1;
3809 priv->ieee_channels = NULL;
3810 priv->ieee_rates = NULL;
3811 priv->band = IEEE80211_BAND_2GHZ;
3812
3813 priv->iw_mode = NL80211_IFTYPE_STATION;
3814
3815 iwl_reset_qos(priv);
3816
3817 priv->qos_data.qos_active = 0;
3818 priv->qos_data.qos_cap.val = 0;
3819
3820 priv->rates_mask = IWL_RATES_MASK;
3821 priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER;
3822
3823 if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
3824 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
3825 eeprom->version);
3826 ret = -EINVAL;
3827 goto err;
3828 }
3829 ret = iwl_init_channel_map(priv);
3830 if (ret) {
3831 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3832 goto err;
3833 }
3834
3835 /* Set up txpower settings in driver for all channels */
3836 if (iwl3945_txpower_set_from_eeprom(priv)) {
3837 ret = -EIO;
3838 goto err_free_channel_map;
3839 }
3840
3841 ret = iwlcore_init_geos(priv);
3842 if (ret) {
3843 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3844 goto err_free_channel_map;
3845 }
3846 iwl3945_init_hw_rates(priv, priv->ieee_rates);
3847
3848 return 0;
3849
3850 err_free_channel_map:
3851 iwl_free_channel_map(priv);
3852 err:
3853 return ret;
3854 }
3855
3856 static int iwl3945_setup_mac(struct iwl_priv *priv)
3857 {
3858 int ret;
3859 struct ieee80211_hw *hw = priv->hw;
3860
3861 hw->rate_control_algorithm = "iwl-3945-rs";
3862 hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
3863
3864 /* Tell mac80211 our characteristics */
3865 hw->flags = IEEE80211_HW_SIGNAL_DBM |
3866 IEEE80211_HW_NOISE_DBM |
3867 IEEE80211_HW_SPECTRUM_MGMT |
3868 IEEE80211_HW_SUPPORTS_PS |
3869 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
3870
3871 hw->wiphy->interface_modes =
3872 BIT(NL80211_IFTYPE_STATION) |
3873 BIT(NL80211_IFTYPE_ADHOC);
3874
3875 hw->wiphy->custom_regulatory = true;
3876
3877 /* Firmware does not support this */
3878 hw->wiphy->disable_beacon_hints = true;
3879
3880 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX_3945;
3881 /* we create the 802.11 header and a zero-length SSID element */
3882 hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
3883
3884 /* Default value; 4 EDCA QOS priorities */
3885 hw->queues = 4;
3886
3887 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
3888 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3889 &priv->bands[IEEE80211_BAND_2GHZ];
3890
3891 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
3892 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
3893 &priv->bands[IEEE80211_BAND_5GHZ];
3894
3895 ret = ieee80211_register_hw(priv->hw);
3896 if (ret) {
3897 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
3898 return ret;
3899 }
3900 priv->mac80211_registered = 1;
3901
3902 return 0;
3903 }
3904
3905 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3906 {
3907 int err = 0;
3908 struct iwl_priv *priv;
3909 struct ieee80211_hw *hw;
3910 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3911 struct iwl3945_eeprom *eeprom;
3912 unsigned long flags;
3913
3914 /***********************
3915 * 1. Allocating HW data
3916 * ********************/
3917
3918 /* mac80211 allocates memory for this device instance, including
3919 * space for this driver's private structure */
3920 hw = iwl_alloc_all(cfg, &iwl3945_hw_ops);
3921 if (hw == NULL) {
3922 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
3923 err = -ENOMEM;
3924 goto out;
3925 }
3926 priv = hw->priv;
3927 SET_IEEE80211_DEV(hw, &pdev->dev);
3928
3929 /*
3930 * Disabling hardware scan means that mac80211 will perform scans
3931 * "the hard way", rather than using device's scan.
3932 */
3933 if (iwl3945_mod_params.disable_hw_scan) {
3934 IWL_DEBUG_INFO(priv, "Disabling hw_scan\n");
3935 iwl3945_hw_ops.hw_scan = NULL;
3936 }
3937
3938
3939 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3940 priv->cfg = cfg;
3941 priv->pci_dev = pdev;
3942 priv->inta_mask = CSR_INI_SET_MASK;
3943
3944 #ifdef CONFIG_IWLWIFI_DEBUG
3945 atomic_set(&priv->restrict_refcnt, 0);
3946 #endif
3947 if (iwl_alloc_traffic_mem(priv))
3948 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3949
3950 /***************************
3951 * 2. Initializing PCI bus
3952 * *************************/
3953 if (pci_enable_device(pdev)) {
3954 err = -ENODEV;
3955 goto out_ieee80211_free_hw;
3956 }
3957
3958 pci_set_master(pdev);
3959
3960 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3961 if (!err)
3962 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3963 if (err) {
3964 IWL_WARN(priv, "No suitable DMA available.\n");
3965 goto out_pci_disable_device;
3966 }
3967
3968 pci_set_drvdata(pdev, priv);
3969 err = pci_request_regions(pdev, DRV_NAME);
3970 if (err)
3971 goto out_pci_disable_device;
3972
3973 /***********************
3974 * 3. Read REV Register
3975 * ********************/
3976 priv->hw_base = pci_iomap(pdev, 0, 0);
3977 if (!priv->hw_base) {
3978 err = -ENODEV;
3979 goto out_pci_release_regions;
3980 }
3981
3982 IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
3983 (unsigned long long) pci_resource_len(pdev, 0));
3984 IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
3985
3986 /* We disable the RETRY_TIMEOUT register (0x41) to keep
3987 * PCI Tx retries from interfering with C3 CPU state */
3988 pci_write_config_byte(pdev, 0x41, 0x00);
3989
3990 /* this spin lock will be used in apm_ops.init and EEPROM access
3991 * we should init now
3992 */
3993 spin_lock_init(&priv->reg_lock);
3994
3995 /* amp init */
3996 err = priv->cfg->ops->lib->apm_ops.init(priv);
3997 if (err < 0) {
3998 IWL_DEBUG_INFO(priv, "Failed to init the card\n");
3999 goto out_iounmap;
4000 }
4001
4002 /***********************
4003 * 4. Read EEPROM
4004 * ********************/
4005
4006 /* Read the EEPROM */
4007 err = iwl_eeprom_init(priv);
4008 if (err) {
4009 IWL_ERR(priv, "Unable to init EEPROM\n");
4010 goto out_iounmap;
4011 }
4012 /* MAC Address location in EEPROM same for 3945/4965 */
4013 eeprom = (struct iwl3945_eeprom *)priv->eeprom;
4014 memcpy(priv->mac_addr, eeprom->mac_address, ETH_ALEN);
4015 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
4016 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4017
4018 /***********************
4019 * 5. Setup HW Constants
4020 * ********************/
4021 /* Device-specific setup */
4022 if (iwl3945_hw_set_hw_params(priv)) {
4023 IWL_ERR(priv, "failed to set hw settings\n");
4024 goto out_eeprom_free;
4025 }
4026
4027 /***********************
4028 * 6. Setup priv
4029 * ********************/
4030
4031 err = iwl3945_init_drv(priv);
4032 if (err) {
4033 IWL_ERR(priv, "initializing driver failed\n");
4034 goto out_unset_hw_params;
4035 }
4036
4037 IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
4038 priv->cfg->name);
4039
4040 /***********************
4041 * 7. Setup Services
4042 * ********************/
4043
4044 spin_lock_irqsave(&priv->lock, flags);
4045 iwl_disable_interrupts(priv);
4046 spin_unlock_irqrestore(&priv->lock, flags);
4047
4048 pci_enable_msi(priv->pci_dev);
4049
4050 err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr,
4051 IRQF_SHARED, DRV_NAME, priv);
4052 if (err) {
4053 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
4054 goto out_disable_msi;
4055 }
4056
4057 err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4058 if (err) {
4059 IWL_ERR(priv, "failed to create sysfs device attributes\n");
4060 goto out_release_irq;
4061 }
4062
4063 iwl_set_rxon_channel(priv,
4064 &priv->bands[IEEE80211_BAND_2GHZ].channels[5]);
4065 iwl3945_setup_deferred_work(priv);
4066 iwl3945_setup_rx_handlers(priv);
4067 iwl_power_initialize(priv);
4068
4069 /*********************************
4070 * 8. Setup and Register mac80211
4071 * *******************************/
4072
4073 iwl_enable_interrupts(priv);
4074
4075 err = iwl3945_setup_mac(priv);
4076 if (err)
4077 goto out_remove_sysfs;
4078
4079 err = iwl_dbgfs_register(priv, DRV_NAME);
4080 if (err)
4081 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
4082
4083 /* Start monitoring the killswitch */
4084 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
4085 2 * HZ);
4086
4087 return 0;
4088
4089 out_remove_sysfs:
4090 destroy_workqueue(priv->workqueue);
4091 priv->workqueue = NULL;
4092 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4093 out_release_irq:
4094 free_irq(priv->pci_dev->irq, priv);
4095 out_disable_msi:
4096 pci_disable_msi(priv->pci_dev);
4097 iwlcore_free_geos(priv);
4098 iwl_free_channel_map(priv);
4099 out_unset_hw_params:
4100 iwl3945_unset_hw_params(priv);
4101 out_eeprom_free:
4102 iwl_eeprom_free(priv);
4103 out_iounmap:
4104 pci_iounmap(pdev, priv->hw_base);
4105 out_pci_release_regions:
4106 pci_release_regions(pdev);
4107 out_pci_disable_device:
4108 pci_set_drvdata(pdev, NULL);
4109 pci_disable_device(pdev);
4110 out_ieee80211_free_hw:
4111 iwl_free_traffic_mem(priv);
4112 ieee80211_free_hw(priv->hw);
4113 out:
4114 return err;
4115 }
4116
4117 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
4118 {
4119 struct iwl_priv *priv = pci_get_drvdata(pdev);
4120 unsigned long flags;
4121
4122 if (!priv)
4123 return;
4124
4125 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
4126
4127 iwl_dbgfs_unregister(priv);
4128
4129 set_bit(STATUS_EXIT_PENDING, &priv->status);
4130
4131 if (priv->mac80211_registered) {
4132 ieee80211_unregister_hw(priv->hw);
4133 priv->mac80211_registered = 0;
4134 } else {
4135 iwl3945_down(priv);
4136 }
4137
4138 /* make sure we flush any pending irq or
4139 * tasklet for the driver
4140 */
4141 spin_lock_irqsave(&priv->lock, flags);
4142 iwl_disable_interrupts(priv);
4143 spin_unlock_irqrestore(&priv->lock, flags);
4144
4145 iwl_synchronize_irq(priv);
4146
4147 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4148
4149 cancel_delayed_work_sync(&priv->rfkill_poll);
4150
4151 iwl3945_dealloc_ucode_pci(priv);
4152
4153 if (priv->rxq.bd)
4154 iwl3945_rx_queue_free(priv, &priv->rxq);
4155 iwl3945_hw_txq_ctx_free(priv);
4156
4157 iwl3945_unset_hw_params(priv);
4158 iwl_clear_stations_table(priv);
4159
4160 /*netif_stop_queue(dev); */
4161 flush_workqueue(priv->workqueue);
4162
4163 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4164 * priv->workqueue... so we can't take down the workqueue
4165 * until now... */
4166 destroy_workqueue(priv->workqueue);
4167 priv->workqueue = NULL;
4168 iwl_free_traffic_mem(priv);
4169
4170 free_irq(pdev->irq, priv);
4171 pci_disable_msi(pdev);
4172
4173 pci_iounmap(pdev, priv->hw_base);
4174 pci_release_regions(pdev);
4175 pci_disable_device(pdev);
4176 pci_set_drvdata(pdev, NULL);
4177
4178 iwl_free_channel_map(priv);
4179 iwlcore_free_geos(priv);
4180 kfree(priv->scan);
4181 if (priv->ibss_beacon)
4182 dev_kfree_skb(priv->ibss_beacon);
4183
4184 ieee80211_free_hw(priv->hw);
4185 }
4186
4187
4188 /*****************************************************************************
4189 *
4190 * driver and module entry point
4191 *
4192 *****************************************************************************/
4193
4194 static struct pci_driver iwl3945_driver = {
4195 .name = DRV_NAME,
4196 .id_table = iwl3945_hw_card_ids,
4197 .probe = iwl3945_pci_probe,
4198 .remove = __devexit_p(iwl3945_pci_remove),
4199 #ifdef CONFIG_PM
4200 .suspend = iwl_pci_suspend,
4201 .resume = iwl_pci_resume,
4202 #endif
4203 };
4204
4205 static int __init iwl3945_init(void)
4206 {
4207
4208 int ret;
4209 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4210 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4211
4212 ret = iwl3945_rate_control_register();
4213 if (ret) {
4214 printk(KERN_ERR DRV_NAME
4215 "Unable to register rate control algorithm: %d\n", ret);
4216 return ret;
4217 }
4218
4219 ret = pci_register_driver(&iwl3945_driver);
4220 if (ret) {
4221 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
4222 goto error_register;
4223 }
4224
4225 return ret;
4226
4227 error_register:
4228 iwl3945_rate_control_unregister();
4229 return ret;
4230 }
4231
4232 static void __exit iwl3945_exit(void)
4233 {
4234 pci_unregister_driver(&iwl3945_driver);
4235 iwl3945_rate_control_unregister();
4236 }
4237
4238 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
4239
4240 module_param_named(antenna, iwl3945_mod_params.antenna, int, S_IRUGO);
4241 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
4242 module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, S_IRUGO);
4243 MODULE_PARM_DESC(swcrypto,
4244 "using software crypto (default 1 [software])\n");
4245 #ifdef CONFIG_IWLWIFI_DEBUG
4246 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
4247 MODULE_PARM_DESC(debug, "debug output mask");
4248 #endif
4249 module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan,
4250 int, S_IRUGO);
4251 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
4252 module_param_named(fw_restart3945, iwl3945_mod_params.restart_fw, int, S_IRUGO);
4253 MODULE_PARM_DESC(fw_restart3945, "restart firmware in case of error");
4254
4255 module_exit(iwl3945_exit);
4256 module_init(iwl3945_init);
Linux kernel - Deliverables
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