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iwlwifi: automatically adjust sleep level
[linux-2.6/kvm.git] / drivers / net / wireless / iwlwifi / iwl3945-base.c
blobe617411d0c5e4a7b439b426d73a6470cbf7c073c
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/lib80211.h>
45 #include <net/mac80211.h>
46
47 #include <asm/div64.h>
48
49 #define DRV_NAME "iwl3945"
50
51 #include "iwl-fh.h"
52 #include "iwl-3945-fh.h"
53 #include "iwl-commands.h"
54 #include "iwl-sta.h"
55 #include "iwl-3945.h"
56 #include "iwl-helpers.h"
57 #include "iwl-core.h"
58 #include "iwl-dev.h"
59
60 /*
61 * module name, copyright, version, etc.
62 */
63
64 #define DRV_DESCRIPTION \
65 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
66
67 #ifdef CONFIG_IWLWIFI_DEBUG
68 #define VD "d"
69 #else
70 #define VD
71 #endif
72
73 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
74 #define VS "s"
75 #else
76 #define VS
77 #endif
78
79 #define IWL39_VERSION "1.2.26k" VD VS
80 #define DRV_COPYRIGHT "Copyright(c) 2003-2009 Intel Corporation"
81 #define DRV_AUTHOR "<ilw@linux.intel.com>"
82 #define DRV_VERSION IWL39_VERSION
83
84
85 MODULE_DESCRIPTION(DRV_DESCRIPTION);
86 MODULE_VERSION(DRV_VERSION);
87 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
88 MODULE_LICENSE("GPL");
89
90 /* module parameters */
91 struct iwl_mod_params iwl3945_mod_params = {
92 .num_of_queues = IWL39_NUM_QUEUES, /* Not used */
93 .sw_crypto = 1,
94 .restart_fw = 1,
95 /* the rest are 0 by default */
96 };
97
98 /**
99 * iwl3945_get_antenna_flags - Get antenna flags for RXON command
100 * @priv: eeprom and antenna fields are used to determine antenna flags
101 *
102 * priv->eeprom39 is used to determine if antenna AUX/MAIN are reversed
103 * iwl3945_mod_params.antenna specifies the antenna diversity mode:
104 *
105 * IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
106 * IWL_ANTENNA_MAIN - Force MAIN antenna
107 * IWL_ANTENNA_AUX - Force AUX antenna
108 */
109 __le32 iwl3945_get_antenna_flags(const struct iwl_priv *priv)
110 {
111 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
112
113 switch (iwl3945_mod_params.antenna) {
114 case IWL_ANTENNA_DIVERSITY:
115 return 0;
116
117 case IWL_ANTENNA_MAIN:
118 if (eeprom->antenna_switch_type)
119 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
120 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
121
122 case IWL_ANTENNA_AUX:
123 if (eeprom->antenna_switch_type)
124 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
125 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
126 }
127
128 /* bad antenna selector value */
129 IWL_ERR(priv, "Bad antenna selector value (0x%x)\n",
130 iwl3945_mod_params.antenna);
131
132 return 0; /* "diversity" is default if error */
133 }
134
135 static int iwl3945_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
136 struct ieee80211_key_conf *keyconf,
137 u8 sta_id)
138 {
139 unsigned long flags;
140 __le16 key_flags = 0;
141 int ret;
142
143 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
144 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
145
146 if (sta_id == priv->hw_params.bcast_sta_id)
147 key_flags |= STA_KEY_MULTICAST_MSK;
148
149 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
150 keyconf->hw_key_idx = keyconf->keyidx;
151 key_flags &= ~STA_KEY_FLG_INVALID;
152
153 spin_lock_irqsave(&priv->sta_lock, flags);
154 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
155 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
156 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
157 keyconf->keylen);
158
159 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
160 keyconf->keylen);
161
162 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
163 == STA_KEY_FLG_NO_ENC)
164 priv->stations[sta_id].sta.key.key_offset =
165 iwl_get_free_ucode_key_index(priv);
166 /* else, we are overriding an existing key => no need to allocated room
167 * in uCode. */
168
169 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
170 "no space for a new key");
171
172 priv->stations[sta_id].sta.key.key_flags = key_flags;
173 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
174 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
175
176 IWL_DEBUG_INFO(priv, "hwcrypto: modify ucode station key info\n");
177
178 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
179
180 spin_unlock_irqrestore(&priv->sta_lock, flags);
181
182 return ret;
183 }
184
185 static int iwl3945_set_tkip_dynamic_key_info(struct iwl_priv *priv,
186 struct ieee80211_key_conf *keyconf,
187 u8 sta_id)
188 {
189 return -EOPNOTSUPP;
190 }
191
192 static int iwl3945_set_wep_dynamic_key_info(struct iwl_priv *priv,
193 struct ieee80211_key_conf *keyconf,
194 u8 sta_id)
195 {
196 return -EOPNOTSUPP;
197 }
198
199 static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
200 {
201 unsigned long flags;
202
203 spin_lock_irqsave(&priv->sta_lock, flags);
204 memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl_hw_key));
205 memset(&priv->stations[sta_id].sta.key, 0,
206 sizeof(struct iwl4965_keyinfo));
207 priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
208 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
209 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
210 spin_unlock_irqrestore(&priv->sta_lock, flags);
211
212 IWL_DEBUG_INFO(priv, "hwcrypto: clear ucode station key info\n");
213 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, 0);
214 return 0;
215 }
216
217 static int iwl3945_set_dynamic_key(struct iwl_priv *priv,
218 struct ieee80211_key_conf *keyconf, u8 sta_id)
219 {
220 int ret = 0;
221
222 keyconf->hw_key_idx = HW_KEY_DYNAMIC;
223
224 switch (keyconf->alg) {
225 case ALG_CCMP:
226 ret = iwl3945_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
227 break;
228 case ALG_TKIP:
229 ret = iwl3945_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
230 break;
231 case ALG_WEP:
232 ret = iwl3945_set_wep_dynamic_key_info(priv, keyconf, sta_id);
233 break;
234 default:
235 IWL_ERR(priv, "Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
236 ret = -EINVAL;
237 }
238
239 IWL_DEBUG_WEP(priv, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
240 keyconf->alg, keyconf->keylen, keyconf->keyidx,
241 sta_id, ret);
242
243 return ret;
244 }
245
246 static int iwl3945_remove_static_key(struct iwl_priv *priv)
247 {
248 int ret = -EOPNOTSUPP;
249
250 return ret;
251 }
252
253 static int iwl3945_set_static_key(struct iwl_priv *priv,
254 struct ieee80211_key_conf *key)
255 {
256 if (key->alg == ALG_WEP)
257 return -EOPNOTSUPP;
258
259 IWL_ERR(priv, "Static key invalid: alg %d\n", key->alg);
260 return -EINVAL;
261 }
262
263 static void iwl3945_clear_free_frames(struct iwl_priv *priv)
264 {
265 struct list_head *element;
266
267 IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
268 priv->frames_count);
269
270 while (!list_empty(&priv->free_frames)) {
271 element = priv->free_frames.next;
272 list_del(element);
273 kfree(list_entry(element, struct iwl3945_frame, list));
274 priv->frames_count--;
275 }
276
277 if (priv->frames_count) {
278 IWL_WARN(priv, "%d frames still in use. Did we lose one?\n",
279 priv->frames_count);
280 priv->frames_count = 0;
281 }
282 }
283
284 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv)
285 {
286 struct iwl3945_frame *frame;
287 struct list_head *element;
288 if (list_empty(&priv->free_frames)) {
289 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
290 if (!frame) {
291 IWL_ERR(priv, "Could not allocate frame!\n");
292 return NULL;
293 }
294
295 priv->frames_count++;
296 return frame;
297 }
298
299 element = priv->free_frames.next;
300 list_del(element);
301 return list_entry(element, struct iwl3945_frame, list);
302 }
303
304 static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame)
305 {
306 memset(frame, 0, sizeof(*frame));
307 list_add(&frame->list, &priv->free_frames);
308 }
309
310 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
311 struct ieee80211_hdr *hdr,
312 int left)
313 {
314
315 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
316 ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
317 (priv->iw_mode != NL80211_IFTYPE_AP)))
318 return 0;
319
320 if (priv->ibss_beacon->len > left)
321 return 0;
322
323 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
324
325 return priv->ibss_beacon->len;
326 }
327
328 static int iwl3945_send_beacon_cmd(struct iwl_priv *priv)
329 {
330 struct iwl3945_frame *frame;
331 unsigned int frame_size;
332 int rc;
333 u8 rate;
334
335 frame = iwl3945_get_free_frame(priv);
336
337 if (!frame) {
338 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
339 "command.\n");
340 return -ENOMEM;
341 }
342
343 rate = iwl_rate_get_lowest_plcp(priv);
344
345 frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
346
347 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
348 &frame->u.cmd[0]);
349
350 iwl3945_free_frame(priv, frame);
351
352 return rc;
353 }
354
355 static void iwl3945_unset_hw_params(struct iwl_priv *priv)
356 {
357 if (priv->shared_virt)
358 pci_free_consistent(priv->pci_dev,
359 sizeof(struct iwl3945_shared),
360 priv->shared_virt,
361 priv->shared_phys);
362 }
363
364 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
365 struct ieee80211_tx_info *info,
366 struct iwl_device_cmd *cmd,
367 struct sk_buff *skb_frag,
368 int sta_id)
369 {
370 struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
371 struct iwl_hw_key *keyinfo = &priv->stations[sta_id].keyinfo;
372
373 switch (keyinfo->alg) {
374 case ALG_CCMP:
375 tx->sec_ctl = TX_CMD_SEC_CCM;
376 memcpy(tx->key, keyinfo->key, keyinfo->keylen);
377 IWL_DEBUG_TX(priv, "tx_cmd with AES hwcrypto\n");
378 break;
379
380 case ALG_TKIP:
381 break;
382
383 case ALG_WEP:
384 tx->sec_ctl = TX_CMD_SEC_WEP |
385 (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
386
387 if (keyinfo->keylen == 13)
388 tx->sec_ctl |= TX_CMD_SEC_KEY128;
389
390 memcpy(&tx->key[3], keyinfo->key, keyinfo->keylen);
391
392 IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption "
393 "with key %d\n", info->control.hw_key->hw_key_idx);
394 break;
395
396 default:
397 IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg);
398 break;
399 }
400 }
401
402 /*
403 * handle build REPLY_TX command notification.
404 */
405 static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
406 struct iwl_device_cmd *cmd,
407 struct ieee80211_tx_info *info,
408 struct ieee80211_hdr *hdr, u8 std_id)
409 {
410 struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
411 __le32 tx_flags = tx->tx_flags;
412 __le16 fc = hdr->frame_control;
413 u8 rc_flags = info->control.rates[0].flags;
414
415 tx->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
416 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
417 tx_flags |= TX_CMD_FLG_ACK_MSK;
418 if (ieee80211_is_mgmt(fc))
419 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
420 if (ieee80211_is_probe_resp(fc) &&
421 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
422 tx_flags |= TX_CMD_FLG_TSF_MSK;
423 } else {
424 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
425 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
426 }
427
428 tx->sta_id = std_id;
429 if (ieee80211_has_morefrags(fc))
430 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
431
432 if (ieee80211_is_data_qos(fc)) {
433 u8 *qc = ieee80211_get_qos_ctl(hdr);
434 tx->tid_tspec = qc[0] & 0xf;
435 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
436 } else {
437 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
438 }
439
440 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
441 tx_flags |= TX_CMD_FLG_RTS_MSK;
442 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
443 } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
444 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
445 tx_flags |= TX_CMD_FLG_CTS_MSK;
446 }
447
448 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
449 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
450
451 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
452 if (ieee80211_is_mgmt(fc)) {
453 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
454 tx->timeout.pm_frame_timeout = cpu_to_le16(3);
455 else
456 tx->timeout.pm_frame_timeout = cpu_to_le16(2);
457 } else {
458 tx->timeout.pm_frame_timeout = 0;
459 #ifdef CONFIG_IWLWIFI_LEDS
460 priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
461 #endif
462 }
463
464 tx->driver_txop = 0;
465 tx->tx_flags = tx_flags;
466 tx->next_frame_len = 0;
467 }
468
469 /*
470 * start REPLY_TX command process
471 */
472 static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
473 {
474 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
475 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
476 struct iwl3945_tx_cmd *tx;
477 struct iwl_tx_queue *txq = NULL;
478 struct iwl_queue *q = NULL;
479 struct iwl_device_cmd *out_cmd;
480 struct iwl_cmd_meta *out_meta;
481 dma_addr_t phys_addr;
482 dma_addr_t txcmd_phys;
483 int txq_id = skb_get_queue_mapping(skb);
484 u16 len, idx, len_org, hdr_len; /* TODO: len_org is not used */
485 u8 id;
486 u8 unicast;
487 u8 sta_id;
488 u8 tid = 0;
489 u16 seq_number = 0;
490 __le16 fc;
491 u8 wait_write_ptr = 0;
492 u8 *qc = NULL;
493 unsigned long flags;
494 int rc;
495
496 spin_lock_irqsave(&priv->lock, flags);
497 if (iwl_is_rfkill(priv)) {
498 IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n");
499 goto drop_unlock;
500 }
501
502 if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
503 IWL_ERR(priv, "ERROR: No TX rate available.\n");
504 goto drop_unlock;
505 }
506
507 unicast = !is_multicast_ether_addr(hdr->addr1);
508 id = 0;
509
510 fc = hdr->frame_control;
511
512 #ifdef CONFIG_IWLWIFI_DEBUG
513 if (ieee80211_is_auth(fc))
514 IWL_DEBUG_TX(priv, "Sending AUTH frame\n");
515 else if (ieee80211_is_assoc_req(fc))
516 IWL_DEBUG_TX(priv, "Sending ASSOC frame\n");
517 else if (ieee80211_is_reassoc_req(fc))
518 IWL_DEBUG_TX(priv, "Sending REASSOC frame\n");
519 #endif
520
521 /* drop all data frame if we are not associated */
522 if (ieee80211_is_data(fc) &&
523 (!iwl_is_monitor_mode(priv)) && /* packet injection */
524 (!iwl_is_associated(priv) ||
525 ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
526 IWL_DEBUG_DROP(priv, "Dropping - !iwl_is_associated\n");
527 goto drop_unlock;
528 }
529
530 spin_unlock_irqrestore(&priv->lock, flags);
531
532 hdr_len = ieee80211_hdrlen(fc);
533
534 /* Find (or create) index into station table for destination station */
535 sta_id = iwl_get_sta_id(priv, hdr);
536 if (sta_id == IWL_INVALID_STATION) {
537 IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n",
538 hdr->addr1);
539 goto drop;
540 }
541
542 IWL_DEBUG_RATE(priv, "station Id %d\n", sta_id);
543
544 if (ieee80211_is_data_qos(fc)) {
545 qc = ieee80211_get_qos_ctl(hdr);
546 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
547 seq_number = priv->stations[sta_id].tid[tid].seq_number &
548 IEEE80211_SCTL_SEQ;
549 hdr->seq_ctrl = cpu_to_le16(seq_number) |
550 (hdr->seq_ctrl &
551 cpu_to_le16(IEEE80211_SCTL_FRAG));
552 seq_number += 0x10;
553 }
554
555 /* Descriptor for chosen Tx queue */
556 txq = &priv->txq[txq_id];
557 q = &txq->q;
558
559 spin_lock_irqsave(&priv->lock, flags);
560
561 idx = get_cmd_index(q, q->write_ptr, 0);
562
563 /* Set up driver data for this TFD */
564 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
565 txq->txb[q->write_ptr].skb[0] = skb;
566
567 /* Init first empty entry in queue's array of Tx/cmd buffers */
568 out_cmd = txq->cmd[idx];
569 out_meta = &txq->meta[idx];
570 tx = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload;
571 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
572 memset(tx, 0, sizeof(*tx));
573
574 /*
575 * Set up the Tx-command (not MAC!) header.
576 * Store the chosen Tx queue and TFD index within the sequence field;
577 * after Tx, uCode's Tx response will return this value so driver can
578 * locate the frame within the tx queue and do post-tx processing.
579 */
580 out_cmd->hdr.cmd = REPLY_TX;
581 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
582 INDEX_TO_SEQ(q->write_ptr)));
583
584 /* Copy MAC header from skb into command buffer */
585 memcpy(tx->hdr, hdr, hdr_len);
586
587
588 if (info->control.hw_key)
589 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, sta_id);
590
591 /* TODO need this for burst mode later on */
592 iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id);
593
594 /* set is_hcca to 0; it probably will never be implemented */
595 iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
596
597 /* Total # bytes to be transmitted */
598 len = (u16)skb->len;
599 tx->len = cpu_to_le16(len);
600
601 iwl_dbg_log_tx_data_frame(priv, len, hdr);
602 iwl_update_stats(priv, true, fc, len);
603 tx->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
604 tx->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
605
606 if (!ieee80211_has_morefrags(hdr->frame_control)) {
607 txq->need_update = 1;
608 if (qc)
609 priv->stations[sta_id].tid[tid].seq_number = seq_number;
610 } else {
611 wait_write_ptr = 1;
612 txq->need_update = 0;
613 }
614
615 IWL_DEBUG_TX(priv, "sequence nr = 0X%x \n",
616 le16_to_cpu(out_cmd->hdr.sequence));
617 IWL_DEBUG_TX(priv, "tx_flags = 0X%x \n", le32_to_cpu(tx->tx_flags));
618 iwl_print_hex_dump(priv, IWL_DL_TX, tx, sizeof(*tx));
619 iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx->hdr,
620 ieee80211_hdrlen(fc));
621
622 /*
623 * Use the first empty entry in this queue's command buffer array
624 * to contain the Tx command and MAC header concatenated together
625 * (payload data will be in another buffer).
626 * Size of this varies, due to varying MAC header length.
627 * If end is not dword aligned, we'll have 2 extra bytes at the end
628 * of the MAC header (device reads on dword boundaries).
629 * We'll tell device about this padding later.
630 */
631 len = sizeof(struct iwl3945_tx_cmd) +
632 sizeof(struct iwl_cmd_header) + hdr_len;
633
634 len_org = len;
635 len = (len + 3) & ~3;
636
637 if (len_org != len)
638 len_org = 1;
639 else
640 len_org = 0;
641
642 /* Physical address of this Tx command's header (not MAC header!),
643 * within command buffer array. */
644 txcmd_phys = pci_map_single(priv->pci_dev, &out_cmd->hdr,
645 len, PCI_DMA_TODEVICE);
646 /* we do not map meta data ... so we can safely access address to
647 * provide to unmap command*/
648 pci_unmap_addr_set(out_meta, mapping, txcmd_phys);
649 pci_unmap_len_set(out_meta, len, len);
650
651 /* Add buffer containing Tx command and MAC(!) header to TFD's
652 * first entry */
653 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
654 txcmd_phys, len, 1, 0);
655
656
657 /* Set up TFD's 2nd entry to point directly to remainder of skb,
658 * if any (802.11 null frames have no payload). */
659 len = skb->len - hdr_len;
660 if (len) {
661 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
662 len, PCI_DMA_TODEVICE);
663 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
664 phys_addr, len,
665 0, U32_PAD(len));
666 }
667
668
669 /* Tell device the write index *just past* this latest filled TFD */
670 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
671 rc = iwl_txq_update_write_ptr(priv, txq);
672 spin_unlock_irqrestore(&priv->lock, flags);
673
674 if (rc)
675 return rc;
676
677 if ((iwl_queue_space(q) < q->high_mark)
678 && priv->mac80211_registered) {
679 if (wait_write_ptr) {
680 spin_lock_irqsave(&priv->lock, flags);
681 txq->need_update = 1;
682 iwl_txq_update_write_ptr(priv, txq);
683 spin_unlock_irqrestore(&priv->lock, flags);
684 }
685
686 iwl_stop_queue(priv, skb_get_queue_mapping(skb));
687 }
688
689 return 0;
690
691 drop_unlock:
692 spin_unlock_irqrestore(&priv->lock, flags);
693 drop:
694 return -1;
695 }
696
697 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
698
699 #include "iwl-spectrum.h"
700
701 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
702 #define BEACON_TIME_MASK_HIGH 0xFF000000
703 #define TIME_UNIT 1024
704
705 /*
706 * extended beacon time format
707 * time in usec will be changed into a 32-bit value in 8:24 format
708 * the high 1 byte is the beacon counts
709 * the lower 3 bytes is the time in usec within one beacon interval
710 */
711
712 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
713 {
714 u32 quot;
715 u32 rem;
716 u32 interval = beacon_interval * 1024;
717
718 if (!interval || !usec)
719 return 0;
720
721 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
722 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
723
724 return (quot << 24) + rem;
725 }
726
727 /* base is usually what we get from ucode with each received frame,
728 * the same as HW timer counter counting down
729 */
730
731 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
732 {
733 u32 base_low = base & BEACON_TIME_MASK_LOW;
734 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
735 u32 interval = beacon_interval * TIME_UNIT;
736 u32 res = (base & BEACON_TIME_MASK_HIGH) +
737 (addon & BEACON_TIME_MASK_HIGH);
738
739 if (base_low > addon_low)
740 res += base_low - addon_low;
741 else if (base_low < addon_low) {
742 res += interval + base_low - addon_low;
743 res += (1 << 24);
744 } else
745 res += (1 << 24);
746
747 return cpu_to_le32(res);
748 }
749
750 static int iwl3945_get_measurement(struct iwl_priv *priv,
751 struct ieee80211_measurement_params *params,
752 u8 type)
753 {
754 struct iwl_spectrum_cmd spectrum;
755 struct iwl_rx_packet *res;
756 struct iwl_host_cmd cmd = {
757 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
758 .data = (void *)&spectrum,
759 .flags = CMD_WANT_SKB,
760 };
761 u32 add_time = le64_to_cpu(params->start_time);
762 int rc;
763 int spectrum_resp_status;
764 int duration = le16_to_cpu(params->duration);
765
766 if (iwl_is_associated(priv))
767 add_time =
768 iwl3945_usecs_to_beacons(
769 le64_to_cpu(params->start_time) - priv->last_tsf,
770 le16_to_cpu(priv->rxon_timing.beacon_interval));
771
772 memset(&spectrum, 0, sizeof(spectrum));
773
774 spectrum.channel_count = cpu_to_le16(1);
775 spectrum.flags =
776 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
777 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
778 cmd.len = sizeof(spectrum);
779 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
780
781 if (iwl_is_associated(priv))
782 spectrum.start_time =
783 iwl3945_add_beacon_time(priv->last_beacon_time,
784 add_time,
785 le16_to_cpu(priv->rxon_timing.beacon_interval));
786 else
787 spectrum.start_time = 0;
788
789 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
790 spectrum.channels[0].channel = params->channel;
791 spectrum.channels[0].type = type;
792 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
793 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
794 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
795
796 rc = iwl_send_cmd_sync(priv, &cmd);
797 if (rc)
798 return rc;
799
800 res = (struct iwl_rx_packet *)cmd.reply_skb->data;
801 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
802 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
803 rc = -EIO;
804 }
805
806 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
807 switch (spectrum_resp_status) {
808 case 0: /* Command will be handled */
809 if (res->u.spectrum.id != 0xff) {
810 IWL_DEBUG_INFO(priv, "Replaced existing measurement: %d\n",
811 res->u.spectrum.id);
812 priv->measurement_status &= ~MEASUREMENT_READY;
813 }
814 priv->measurement_status |= MEASUREMENT_ACTIVE;
815 rc = 0;
816 break;
817
818 case 1: /* Command will not be handled */
819 rc = -EAGAIN;
820 break;
821 }
822
823 dev_kfree_skb_any(cmd.reply_skb);
824
825 return rc;
826 }
827 #endif
828
829 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
830 struct iwl_rx_mem_buffer *rxb)
831 {
832 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
833 struct iwl_alive_resp *palive;
834 struct delayed_work *pwork;
835
836 palive = &pkt->u.alive_frame;
837
838 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
839 "0x%01X 0x%01X\n",
840 palive->is_valid, palive->ver_type,
841 palive->ver_subtype);
842
843 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
844 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
845 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
846 sizeof(struct iwl_alive_resp));
847 pwork = &priv->init_alive_start;
848 } else {
849 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
850 memcpy(&priv->card_alive, &pkt->u.alive_frame,
851 sizeof(struct iwl_alive_resp));
852 pwork = &priv->alive_start;
853 iwl3945_disable_events(priv);
854 }
855
856 /* We delay the ALIVE response by 5ms to
857 * give the HW RF Kill time to activate... */
858 if (palive->is_valid == UCODE_VALID_OK)
859 queue_delayed_work(priv->workqueue, pwork,
860 msecs_to_jiffies(5));
861 else
862 IWL_WARN(priv, "uCode did not respond OK.\n");
863 }
864
865 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
866 struct iwl_rx_mem_buffer *rxb)
867 {
868 #ifdef CONFIG_IWLWIFI_DEBUG
869 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
870 #endif
871
872 IWL_DEBUG_RX(priv, "Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
873 return;
874 }
875
876 static void iwl3945_bg_beacon_update(struct work_struct *work)
877 {
878 struct iwl_priv *priv =
879 container_of(work, struct iwl_priv, beacon_update);
880 struct sk_buff *beacon;
881
882 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
883 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
884
885 if (!beacon) {
886 IWL_ERR(priv, "update beacon failed\n");
887 return;
888 }
889
890 mutex_lock(&priv->mutex);
891 /* new beacon skb is allocated every time; dispose previous.*/
892 if (priv->ibss_beacon)
893 dev_kfree_skb(priv->ibss_beacon);
894
895 priv->ibss_beacon = beacon;
896 mutex_unlock(&priv->mutex);
897
898 iwl3945_send_beacon_cmd(priv);
899 }
900
901 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
902 struct iwl_rx_mem_buffer *rxb)
903 {
904 #ifdef CONFIG_IWLWIFI_DEBUG
905 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
906 struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
907 u8 rate = beacon->beacon_notify_hdr.rate;
908
909 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
910 "tsf %d %d rate %d\n",
911 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
912 beacon->beacon_notify_hdr.failure_frame,
913 le32_to_cpu(beacon->ibss_mgr_status),
914 le32_to_cpu(beacon->high_tsf),
915 le32_to_cpu(beacon->low_tsf), rate);
916 #endif
917
918 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
919 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
920 queue_work(priv->workqueue, &priv->beacon_update);
921 }
922
923 /* Handle notification from uCode that card's power state is changing
924 * due to software, hardware, or critical temperature RFKILL */
925 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
926 struct iwl_rx_mem_buffer *rxb)
927 {
928 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
929 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
930 unsigned long status = priv->status;
931
932 IWL_WARN(priv, "Card state received: HW:%s SW:%s\n",
933 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
934 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
935
936 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
937 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
938
939 if (flags & HW_CARD_DISABLED)
940 set_bit(STATUS_RF_KILL_HW, &priv->status);
941 else
942 clear_bit(STATUS_RF_KILL_HW, &priv->status);
943
944
945 iwl_scan_cancel(priv);
946
947 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
948 test_bit(STATUS_RF_KILL_HW, &priv->status)))
949 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
950 test_bit(STATUS_RF_KILL_HW, &priv->status));
951 else
952 wake_up_interruptible(&priv->wait_command_queue);
953 }
954
955 /**
956 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
957 *
958 * Setup the RX handlers for each of the reply types sent from the uCode
959 * to the host.
960 *
961 * This function chains into the hardware specific files for them to setup
962 * any hardware specific handlers as well.
963 */
964 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
965 {
966 priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
967 priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
968 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
969 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
970 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
971 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
972 iwl_rx_pm_debug_statistics_notif;
973 priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
974
975 /*
976 * The same handler is used for both the REPLY to a discrete
977 * statistics request from the host as well as for the periodic
978 * statistics notifications (after received beacons) from the uCode.
979 */
980 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
981 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
982
983 iwl_setup_spectrum_handlers(priv);
984 iwl_setup_rx_scan_handlers(priv);
985 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
986
987 /* Set up hardware specific Rx handlers */
988 iwl3945_hw_rx_handler_setup(priv);
989 }
990
991 /************************** RX-FUNCTIONS ****************************/
992 /*
993 * Rx theory of operation
994 *
995 * The host allocates 32 DMA target addresses and passes the host address
996 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
997 * 0 to 31
998 *
999 * Rx Queue Indexes
1000 * The host/firmware share two index registers for managing the Rx buffers.
1001 *
1002 * The READ index maps to the first position that the firmware may be writing
1003 * to -- the driver can read up to (but not including) this position and get
1004 * good data.
1005 * The READ index is managed by the firmware once the card is enabled.
1006 *
1007 * The WRITE index maps to the last position the driver has read from -- the
1008 * position preceding WRITE is the last slot the firmware can place a packet.
1009 *
1010 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
1011 * WRITE = READ.
1012 *
1013 * During initialization, the host sets up the READ queue position to the first
1014 * INDEX position, and WRITE to the last (READ - 1 wrapped)
1015 *
1016 * When the firmware places a packet in a buffer, it will advance the READ index
1017 * and fire the RX interrupt. The driver can then query the READ index and
1018 * process as many packets as possible, moving the WRITE index forward as it
1019 * resets the Rx queue buffers with new memory.
1020 *
1021 * The management in the driver is as follows:
1022 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
1023 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
1024 * to replenish the iwl->rxq->rx_free.
1025 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
1026 * iwl->rxq is replenished and the READ INDEX is updated (updating the
1027 * 'processed' and 'read' driver indexes as well)
1028 * + A received packet is processed and handed to the kernel network stack,
1029 * detached from the iwl->rxq. The driver 'processed' index is updated.
1030 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
1031 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
1032 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
1033 * were enough free buffers and RX_STALLED is set it is cleared.
1034 *
1035 *
1036 * Driver sequence:
1037 *
1038 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
1039 * iwl3945_rx_queue_restock
1040 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
1041 * queue, updates firmware pointers, and updates
1042 * the WRITE index. If insufficient rx_free buffers
1043 * are available, schedules iwl3945_rx_replenish
1044 *
1045 * -- enable interrupts --
1046 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
1047 * READ INDEX, detaching the SKB from the pool.
1048 * Moves the packet buffer from queue to rx_used.
1049 * Calls iwl3945_rx_queue_restock to refill any empty
1050 * slots.
1051 * ...
1052 *
1053 */
1054
1055 /**
1056 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
1057 */
1058 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
1059 dma_addr_t dma_addr)
1060 {
1061 return cpu_to_le32((u32)dma_addr);
1062 }
1063
1064 /**
1065 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
1066 *
1067 * If there are slots in the RX queue that need to be restocked,
1068 * and we have free pre-allocated buffers, fill the ranks as much
1069 * as we can, pulling from rx_free.
1070 *
1071 * This moves the 'write' index forward to catch up with 'processed', and
1072 * also updates the memory address in the firmware to reference the new
1073 * target buffer.
1074 */
1075 static int iwl3945_rx_queue_restock(struct iwl_priv *priv)
1076 {
1077 struct iwl_rx_queue *rxq = &priv->rxq;
1078 struct list_head *element;
1079 struct iwl_rx_mem_buffer *rxb;
1080 unsigned long flags;
1081 int write, rc;
1082
1083 spin_lock_irqsave(&rxq->lock, flags);
1084 write = rxq->write & ~0x7;
1085 while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
1086 /* Get next free Rx buffer, remove from free list */
1087 element = rxq->rx_free.next;
1088 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1089 list_del(element);
1090
1091 /* Point to Rx buffer via next RBD in circular buffer */
1092 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->real_dma_addr);
1093 rxq->queue[rxq->write] = rxb;
1094 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
1095 rxq->free_count--;
1096 }
1097 spin_unlock_irqrestore(&rxq->lock, flags);
1098 /* If the pre-allocated buffer pool is dropping low, schedule to
1099 * refill it */
1100 if (rxq->free_count <= RX_LOW_WATERMARK)
1101 queue_work(priv->workqueue, &priv->rx_replenish);
1102
1103
1104 /* If we've added more space for the firmware to place data, tell it.
1105 * Increment device's write pointer in multiples of 8. */
1106 if ((rxq->write_actual != (rxq->write & ~0x7))
1107 || (abs(rxq->write - rxq->read) > 7)) {
1108 spin_lock_irqsave(&rxq->lock, flags);
1109 rxq->need_update = 1;
1110 spin_unlock_irqrestore(&rxq->lock, flags);
1111 rc = iwl_rx_queue_update_write_ptr(priv, rxq);
1112 if (rc)
1113 return rc;
1114 }
1115
1116 return 0;
1117 }
1118
1119 /**
1120 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1121 *
1122 * When moving to rx_free an SKB is allocated for the slot.
1123 *
1124 * Also restock the Rx queue via iwl3945_rx_queue_restock.
1125 * This is called as a scheduled work item (except for during initialization)
1126 */
1127 static void iwl3945_rx_allocate(struct iwl_priv *priv, gfp_t priority)
1128 {
1129 struct iwl_rx_queue *rxq = &priv->rxq;
1130 struct list_head *element;
1131 struct iwl_rx_mem_buffer *rxb;
1132 unsigned long flags;
1133
1134 while (1) {
1135 spin_lock_irqsave(&rxq->lock, flags);
1136
1137 if (list_empty(&rxq->rx_used)) {
1138 spin_unlock_irqrestore(&rxq->lock, flags);
1139 return;
1140 }
1141
1142 element = rxq->rx_used.next;
1143 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1144 list_del(element);
1145 spin_unlock_irqrestore(&rxq->lock, flags);
1146
1147 /* Alloc a new receive buffer */
1148 rxb->skb =
1149 alloc_skb(priv->hw_params.rx_buf_size,
1150 priority);
1151 if (!rxb->skb) {
1152 if (net_ratelimit())
1153 IWL_CRIT(priv, ": Can not allocate SKB buffers\n");
1154 /* We don't reschedule replenish work here -- we will
1155 * call the restock method and if it still needs
1156 * more buffers it will schedule replenish */
1157 break;
1158 }
1159
1160 /* If radiotap head is required, reserve some headroom here.
1161 * The physical head count is a variable rx_stats->phy_count.
1162 * We reserve 4 bytes here. Plus these extra bytes, the
1163 * headroom of the physical head should be enough for the
1164 * radiotap head that iwl3945 supported. See iwl3945_rt.
1165 */
1166 skb_reserve(rxb->skb, 4);
1167
1168 /* Get physical address of RB/SKB */
1169 rxb->real_dma_addr = pci_map_single(priv->pci_dev,
1170 rxb->skb->data,
1171 priv->hw_params.rx_buf_size,
1172 PCI_DMA_FROMDEVICE);
1173
1174 spin_lock_irqsave(&rxq->lock, flags);
1175 list_add_tail(&rxb->list, &rxq->rx_free);
1176 priv->alloc_rxb_skb++;
1177 rxq->free_count++;
1178 spin_unlock_irqrestore(&rxq->lock, flags);
1179 }
1180 }
1181
1182 void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1183 {
1184 unsigned long flags;
1185 int i;
1186 spin_lock_irqsave(&rxq->lock, flags);
1187 INIT_LIST_HEAD(&rxq->rx_free);
1188 INIT_LIST_HEAD(&rxq->rx_used);
1189 /* Fill the rx_used queue with _all_ of the Rx buffers */
1190 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
1191 /* In the reset function, these buffers may have been allocated
1192 * to an SKB, so we need to unmap and free potential storage */
1193 if (rxq->pool[i].skb != NULL) {
1194 pci_unmap_single(priv->pci_dev,
1195 rxq->pool[i].real_dma_addr,
1196 priv->hw_params.rx_buf_size,
1197 PCI_DMA_FROMDEVICE);
1198 priv->alloc_rxb_skb--;
1199 dev_kfree_skb(rxq->pool[i].skb);
1200 rxq->pool[i].skb = NULL;
1201 }
1202 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
1203 }
1204
1205 /* Set us so that we have processed and used all buffers, but have
1206 * not restocked the Rx queue with fresh buffers */
1207 rxq->read = rxq->write = 0;
1208 rxq->free_count = 0;
1209 rxq->write_actual = 0;
1210 spin_unlock_irqrestore(&rxq->lock, flags);
1211 }
1212
1213 void iwl3945_rx_replenish(void *data)
1214 {
1215 struct iwl_priv *priv = data;
1216 unsigned long flags;
1217
1218 iwl3945_rx_allocate(priv, GFP_KERNEL);
1219
1220 spin_lock_irqsave(&priv->lock, flags);
1221 iwl3945_rx_queue_restock(priv);
1222 spin_unlock_irqrestore(&priv->lock, flags);
1223 }
1224
1225 static void iwl3945_rx_replenish_now(struct iwl_priv *priv)
1226 {
1227 iwl3945_rx_allocate(priv, GFP_ATOMIC);
1228
1229 iwl3945_rx_queue_restock(priv);
1230 }
1231
1232
1233 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1234 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1235 * This free routine walks the list of POOL entries and if SKB is set to
1236 * non NULL it is unmapped and freed
1237 */
1238 static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1239 {
1240 int i;
1241 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
1242 if (rxq->pool[i].skb != NULL) {
1243 pci_unmap_single(priv->pci_dev,
1244 rxq->pool[i].real_dma_addr,
1245 priv->hw_params.rx_buf_size,
1246 PCI_DMA_FROMDEVICE);
1247 dev_kfree_skb(rxq->pool[i].skb);
1248 }
1249 }
1250
1251 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
1252 rxq->dma_addr);
1253 pci_free_consistent(priv->pci_dev, sizeof(struct iwl_rb_status),
1254 rxq->rb_stts, rxq->rb_stts_dma);
1255 rxq->bd = NULL;
1256 rxq->rb_stts = NULL;
1257 }
1258
1259
1260 /* Convert linear signal-to-noise ratio into dB */
1261 static u8 ratio2dB[100] = {
1262 /* 0 1 2 3 4 5 6 7 8 9 */
1263 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1264 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1265 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1266 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1267 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1268 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1269 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1270 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1271 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1272 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1273 };
1274
1275 /* Calculates a relative dB value from a ratio of linear
1276 * (i.e. not dB) signal levels.
1277 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1278 int iwl3945_calc_db_from_ratio(int sig_ratio)
1279 {
1280 /* 1000:1 or higher just report as 60 dB */
1281 if (sig_ratio >= 1000)
1282 return 60;
1283
1284 /* 100:1 or higher, divide by 10 and use table,
1285 * add 20 dB to make up for divide by 10 */
1286 if (sig_ratio >= 100)
1287 return 20 + (int)ratio2dB[sig_ratio/10];
1288
1289 /* We shouldn't see this */
1290 if (sig_ratio < 1)
1291 return 0;
1292
1293 /* Use table for ratios 1:1 - 99:1 */
1294 return (int)ratio2dB[sig_ratio];
1295 }
1296
1297 #define PERFECT_RSSI (-20) /* dBm */
1298 #define WORST_RSSI (-95) /* dBm */
1299 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
1300
1301 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
1302 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
1303 * about formulas used below. */
1304 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
1305 {
1306 int sig_qual;
1307 int degradation = PERFECT_RSSI - rssi_dbm;
1308
1309 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
1310 * as indicator; formula is (signal dbm - noise dbm).
1311 * SNR at or above 40 is a great signal (100%).
1312 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
1313 * Weakest usable signal is usually 10 - 15 dB SNR. */
1314 if (noise_dbm) {
1315 if (rssi_dbm - noise_dbm >= 40)
1316 return 100;
1317 else if (rssi_dbm < noise_dbm)
1318 return 0;
1319 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
1320
1321 /* Else use just the signal level.
1322 * This formula is a least squares fit of data points collected and
1323 * compared with a reference system that had a percentage (%) display
1324 * for signal quality. */
1325 } else
1326 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
1327 (15 * RSSI_RANGE + 62 * degradation)) /
1328 (RSSI_RANGE * RSSI_RANGE);
1329
1330 if (sig_qual > 100)
1331 sig_qual = 100;
1332 else if (sig_qual < 1)
1333 sig_qual = 0;
1334
1335 return sig_qual;
1336 }
1337
1338 /**
1339 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1340 *
1341 * Uses the priv->rx_handlers callback function array to invoke
1342 * the appropriate handlers, including command responses,
1343 * frame-received notifications, and other notifications.
1344 */
1345 static void iwl3945_rx_handle(struct iwl_priv *priv)
1346 {
1347 struct iwl_rx_mem_buffer *rxb;
1348 struct iwl_rx_packet *pkt;
1349 struct iwl_rx_queue *rxq = &priv->rxq;
1350 u32 r, i;
1351 int reclaim;
1352 unsigned long flags;
1353 u8 fill_rx = 0;
1354 u32 count = 8;
1355 int total_empty = 0;
1356
1357 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1358 * buffer that the driver may process (last buffer filled by ucode). */
1359 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
1360 i = rxq->read;
1361
1362 /* calculate total frames need to be restock after handling RX */
1363 total_empty = r - priv->rxq.write_actual;
1364 if (total_empty < 0)
1365 total_empty += RX_QUEUE_SIZE;
1366
1367 if (total_empty > (RX_QUEUE_SIZE / 2))
1368 fill_rx = 1;
1369 /* Rx interrupt, but nothing sent from uCode */
1370 if (i == r)
1371 IWL_DEBUG(priv, IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
1372
1373 while (i != r) {
1374 rxb = rxq->queue[i];
1375
1376 /* If an RXB doesn't have a Rx queue slot associated with it,
1377 * then a bug has been introduced in the queue refilling
1378 * routines -- catch it here */
1379 BUG_ON(rxb == NULL);
1380
1381 rxq->queue[i] = NULL;
1382
1383 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
1384 priv->hw_params.rx_buf_size,
1385 PCI_DMA_FROMDEVICE);
1386 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1387
1388 /* Reclaim a command buffer only if this packet is a response
1389 * to a (driver-originated) command.
1390 * If the packet (e.g. Rx frame) originated from uCode,
1391 * there is no command buffer to reclaim.
1392 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1393 * but apparently a few don't get set; catch them here. */
1394 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1395 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1396 (pkt->hdr.cmd != REPLY_TX);
1397
1398 /* Based on type of command response or notification,
1399 * handle those that need handling via function in
1400 * rx_handlers table. See iwl3945_setup_rx_handlers() */
1401 if (priv->rx_handlers[pkt->hdr.cmd]) {
1402 IWL_DEBUG(priv, IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
1403 "r = %d, i = %d, %s, 0x%02x\n", r, i,
1404 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1405 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1406 priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
1407 } else {
1408 /* No handling needed */
1409 IWL_DEBUG(priv, IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
1410 "r %d i %d No handler needed for %s, 0x%02x\n",
1411 r, i, get_cmd_string(pkt->hdr.cmd),
1412 pkt->hdr.cmd);
1413 }
1414
1415 if (reclaim) {
1416 /* Invoke any callbacks, transfer the skb to caller, and
1417 * fire off the (possibly) blocking iwl_send_cmd()
1418 * as we reclaim the driver command queue */
1419 if (rxb && rxb->skb)
1420 iwl_tx_cmd_complete(priv, rxb);
1421 else
1422 IWL_WARN(priv, "Claim null rxb?\n");
1423 }
1424
1425 /* For now we just don't re-use anything. We can tweak this
1426 * later to try and re-use notification packets and SKBs that
1427 * fail to Rx correctly */
1428 if (rxb->skb != NULL) {
1429 priv->alloc_rxb_skb--;
1430 dev_kfree_skb_any(rxb->skb);
1431 rxb->skb = NULL;
1432 }
1433
1434 spin_lock_irqsave(&rxq->lock, flags);
1435 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1436 spin_unlock_irqrestore(&rxq->lock, flags);
1437 i = (i + 1) & RX_QUEUE_MASK;
1438 /* If there are a lot of unused frames,
1439 * restock the Rx queue so ucode won't assert. */
1440 if (fill_rx) {
1441 count++;
1442 if (count >= 8) {
1443 priv->rxq.read = i;
1444 iwl3945_rx_replenish_now(priv);
1445 count = 0;
1446 }
1447 }
1448 }
1449
1450 /* Backtrack one entry */
1451 priv->rxq.read = i;
1452 if (fill_rx)
1453 iwl3945_rx_replenish_now(priv);
1454 else
1455 iwl3945_rx_queue_restock(priv);
1456 }
1457
1458 /* call this function to flush any scheduled tasklet */
1459 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1460 {
1461 /* wait to make sure we flush pending tasklet*/
1462 synchronize_irq(priv->pci_dev->irq);
1463 tasklet_kill(&priv->irq_tasklet);
1464 }
1465
1466 static const char *desc_lookup(int i)
1467 {
1468 switch (i) {
1469 case 1:
1470 return "FAIL";
1471 case 2:
1472 return "BAD_PARAM";
1473 case 3:
1474 return "BAD_CHECKSUM";
1475 case 4:
1476 return "NMI_INTERRUPT";
1477 case 5:
1478 return "SYSASSERT";
1479 case 6:
1480 return "FATAL_ERROR";
1481 }
1482
1483 return "UNKNOWN";
1484 }
1485
1486 #define ERROR_START_OFFSET (1 * sizeof(u32))
1487 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1488
1489 static void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
1490 {
1491 u32 i;
1492 u32 desc, time, count, base, data1;
1493 u32 blink1, blink2, ilink1, ilink2;
1494
1495 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1496
1497 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1498 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1499 return;
1500 }
1501
1502
1503 count = iwl_read_targ_mem(priv, base);
1504
1505 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1506 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1507 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1508 priv->status, count);
1509 }
1510
1511 IWL_ERR(priv, "Desc Time asrtPC blink2 "
1512 "ilink1 nmiPC Line\n");
1513 for (i = ERROR_START_OFFSET;
1514 i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
1515 i += ERROR_ELEM_SIZE) {
1516 desc = iwl_read_targ_mem(priv, base + i);
1517 time =
1518 iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
1519 blink1 =
1520 iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
1521 blink2 =
1522 iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
1523 ilink1 =
1524 iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
1525 ilink2 =
1526 iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
1527 data1 =
1528 iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
1529
1530 IWL_ERR(priv,
1531 "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1532 desc_lookup(desc), desc, time, blink1, blink2,
1533 ilink1, ilink2, data1);
1534 }
1535
1536 }
1537
1538 #define EVENT_START_OFFSET (6 * sizeof(u32))
1539
1540 /**
1541 * iwl3945_print_event_log - Dump error event log to syslog
1542 *
1543 */
1544 static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
1545 u32 num_events, u32 mode)
1546 {
1547 u32 i;
1548 u32 base; /* SRAM byte address of event log header */
1549 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1550 u32 ptr; /* SRAM byte address of log data */
1551 u32 ev, time, data; /* event log data */
1552
1553 if (num_events == 0)
1554 return;
1555
1556 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1557
1558 if (mode == 0)
1559 event_size = 2 * sizeof(u32);
1560 else
1561 event_size = 3 * sizeof(u32);
1562
1563 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1564
1565 /* "time" is actually "data" for mode 0 (no timestamp).
1566 * place event id # at far right for easier visual parsing. */
1567 for (i = 0; i < num_events; i++) {
1568 ev = iwl_read_targ_mem(priv, ptr);
1569 ptr += sizeof(u32);
1570 time = iwl_read_targ_mem(priv, ptr);
1571 ptr += sizeof(u32);
1572 if (mode == 0) {
1573 /* data, ev */
1574 IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
1575 } else {
1576 data = iwl_read_targ_mem(priv, ptr);
1577 ptr += sizeof(u32);
1578 IWL_ERR(priv, "%010u\t0x%08x\t%04u\n", time, data, ev);
1579 }
1580 }
1581 }
1582
1583 static void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
1584 {
1585 u32 base; /* SRAM byte address of event log header */
1586 u32 capacity; /* event log capacity in # entries */
1587 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1588 u32 num_wraps; /* # times uCode wrapped to top of log */
1589 u32 next_entry; /* index of next entry to be written by uCode */
1590 u32 size; /* # entries that we'll print */
1591
1592 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1593 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1594 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1595 return;
1596 }
1597
1598 /* event log header */
1599 capacity = iwl_read_targ_mem(priv, base);
1600 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1601 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1602 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1603
1604 size = num_wraps ? capacity : next_entry;
1605
1606 /* bail out if nothing in log */
1607 if (size == 0) {
1608 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1609 return;
1610 }
1611
1612 IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1613 size, num_wraps);
1614
1615 /* if uCode has wrapped back to top of log, start at the oldest entry,
1616 * i.e the next one that uCode would fill. */
1617 if (num_wraps)
1618 iwl3945_print_event_log(priv, next_entry,
1619 capacity - next_entry, mode);
1620
1621 /* (then/else) start at top of log */
1622 iwl3945_print_event_log(priv, 0, next_entry, mode);
1623
1624 }
1625
1626 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
1627 {
1628 u32 inta, handled = 0;
1629 u32 inta_fh;
1630 unsigned long flags;
1631 #ifdef CONFIG_IWLWIFI_DEBUG
1632 u32 inta_mask;
1633 #endif
1634
1635 spin_lock_irqsave(&priv->lock, flags);
1636
1637 /* Ack/clear/reset pending uCode interrupts.
1638 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1639 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1640 inta = iwl_read32(priv, CSR_INT);
1641 iwl_write32(priv, CSR_INT, inta);
1642
1643 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1644 * Any new interrupts that happen after this, either while we're
1645 * in this tasklet, or later, will show up in next ISR/tasklet. */
1646 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1647 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1648
1649 #ifdef CONFIG_IWLWIFI_DEBUG
1650 if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1651 /* just for debug */
1652 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1653 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1654 inta, inta_mask, inta_fh);
1655 }
1656 #endif
1657
1658 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1659 * atomic, make sure that inta covers all the interrupts that
1660 * we've discovered, even if FH interrupt came in just after
1661 * reading CSR_INT. */
1662 if (inta_fh & CSR39_FH_INT_RX_MASK)
1663 inta |= CSR_INT_BIT_FH_RX;
1664 if (inta_fh & CSR39_FH_INT_TX_MASK)
1665 inta |= CSR_INT_BIT_FH_TX;
1666
1667 /* Now service all interrupt bits discovered above. */
1668 if (inta & CSR_INT_BIT_HW_ERR) {
1669 IWL_ERR(priv, "Hardware error detected. Restarting.\n");
1670
1671 /* Tell the device to stop sending interrupts */
1672 iwl_disable_interrupts(priv);
1673
1674 priv->isr_stats.hw++;
1675 iwl_irq_handle_error(priv);
1676
1677 handled |= CSR_INT_BIT_HW_ERR;
1678
1679 spin_unlock_irqrestore(&priv->lock, flags);
1680
1681 return;
1682 }
1683
1684 #ifdef CONFIG_IWLWIFI_DEBUG
1685 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1686 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1687 if (inta & CSR_INT_BIT_SCD) {
1688 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1689 "the frame/frames.\n");
1690 priv->isr_stats.sch++;
1691 }
1692
1693 /* Alive notification via Rx interrupt will do the real work */
1694 if (inta & CSR_INT_BIT_ALIVE) {
1695 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1696 priv->isr_stats.alive++;
1697 }
1698 }
1699 #endif
1700 /* Safely ignore these bits for debug checks below */
1701 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1702
1703 /* Error detected by uCode */
1704 if (inta & CSR_INT_BIT_SW_ERR) {
1705 IWL_ERR(priv, "Microcode SW error detected. "
1706 "Restarting 0x%X.\n", inta);
1707 priv->isr_stats.sw++;
1708 priv->isr_stats.sw_err = inta;
1709 iwl_irq_handle_error(priv);
1710 handled |= CSR_INT_BIT_SW_ERR;
1711 }
1712
1713 /* uCode wakes up after power-down sleep */
1714 if (inta & CSR_INT_BIT_WAKEUP) {
1715 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1716 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1717 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1718 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1719 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1720 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1721 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1722 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1723
1724 priv->isr_stats.wakeup++;
1725 handled |= CSR_INT_BIT_WAKEUP;
1726 }
1727
1728 /* All uCode command responses, including Tx command responses,
1729 * Rx "responses" (frame-received notification), and other
1730 * notifications from uCode come through here*/
1731 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1732 iwl3945_rx_handle(priv);
1733 priv->isr_stats.rx++;
1734 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1735 }
1736
1737 if (inta & CSR_INT_BIT_FH_TX) {
1738 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1739 priv->isr_stats.tx++;
1740
1741 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
1742 iwl_write_direct32(priv, FH39_TCSR_CREDIT
1743 (FH39_SRVC_CHNL), 0x0);
1744 handled |= CSR_INT_BIT_FH_TX;
1745 }
1746
1747 if (inta & ~handled) {
1748 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1749 priv->isr_stats.unhandled++;
1750 }
1751
1752 if (inta & ~priv->inta_mask) {
1753 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1754 inta & ~priv->inta_mask);
1755 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
1756 }
1757
1758 /* Re-enable all interrupts */
1759 /* only Re-enable if disabled by irq */
1760 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1761 iwl_enable_interrupts(priv);
1762
1763 #ifdef CONFIG_IWLWIFI_DEBUG
1764 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1765 inta = iwl_read32(priv, CSR_INT);
1766 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1767 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1768 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1769 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1770 }
1771 #endif
1772 spin_unlock_irqrestore(&priv->lock, flags);
1773 }
1774
1775 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
1776 enum ieee80211_band band,
1777 u8 is_active, u8 n_probes,
1778 struct iwl3945_scan_channel *scan_ch)
1779 {
1780 struct ieee80211_channel *chan;
1781 const struct ieee80211_supported_band *sband;
1782 const struct iwl_channel_info *ch_info;
1783 u16 passive_dwell = 0;
1784 u16 active_dwell = 0;
1785 int added, i;
1786
1787 sband = iwl_get_hw_mode(priv, band);
1788 if (!sband)
1789 return 0;
1790
1791 active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
1792 passive_dwell = iwl_get_passive_dwell_time(priv, band);
1793
1794 if (passive_dwell <= active_dwell)
1795 passive_dwell = active_dwell + 1;
1796
1797 for (i = 0, added = 0; i < priv->scan_request->n_channels; i++) {
1798 chan = priv->scan_request->channels[i];
1799
1800 if (chan->band != band)
1801 continue;
1802
1803 scan_ch->channel = chan->hw_value;
1804
1805 ch_info = iwl_get_channel_info(priv, band, scan_ch->channel);
1806 if (!is_channel_valid(ch_info)) {
1807 IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n",
1808 scan_ch->channel);
1809 continue;
1810 }
1811
1812 scan_ch->active_dwell = cpu_to_le16(active_dwell);
1813 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
1814 /* If passive , set up for auto-switch
1815 * and use long active_dwell time.
1816 */
1817 if (!is_active || is_channel_passive(ch_info) ||
1818 (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
1819 scan_ch->type = 0; /* passive */
1820 if (IWL_UCODE_API(priv->ucode_ver) == 1)
1821 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
1822 } else {
1823 scan_ch->type = 1; /* active */
1824 }
1825
1826 /* Set direct probe bits. These may be used both for active
1827 * scan channels (probes gets sent right away),
1828 * or for passive channels (probes get se sent only after
1829 * hearing clear Rx packet).*/
1830 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
1831 if (n_probes)
1832 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1833 } else {
1834 /* uCode v1 does not allow setting direct probe bits on
1835 * passive channel. */
1836 if ((scan_ch->type & 1) && n_probes)
1837 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1838 }
1839
1840 /* Set txpower levels to defaults */
1841 scan_ch->tpc.dsp_atten = 110;
1842 /* scan_pwr_info->tpc.dsp_atten; */
1843
1844 /*scan_pwr_info->tpc.tx_gain; */
1845 if (band == IEEE80211_BAND_5GHZ)
1846 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
1847 else {
1848 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
1849 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
1850 * power level:
1851 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
1852 */
1853 }
1854
1855 IWL_DEBUG_SCAN(priv, "Scanning %d [%s %d]\n",
1856 scan_ch->channel,
1857 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
1858 (scan_ch->type & 1) ?
1859 active_dwell : passive_dwell);
1860
1861 scan_ch++;
1862 added++;
1863 }
1864
1865 IWL_DEBUG_SCAN(priv, "total channels to scan %d \n", added);
1866 return added;
1867 }
1868
1869 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
1870 struct ieee80211_rate *rates)
1871 {
1872 int i;
1873
1874 for (i = 0; i < IWL_RATE_COUNT; i++) {
1875 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
1876 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1877 rates[i].hw_value_short = i;
1878 rates[i].flags = 0;
1879 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
1880 /*
1881 * If CCK != 1M then set short preamble rate flag.
1882 */
1883 rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
1884 0 : IEEE80211_RATE_SHORT_PREAMBLE;
1885 }
1886 }
1887 }
1888
1889 /******************************************************************************
1890 *
1891 * uCode download functions
1892 *
1893 ******************************************************************************/
1894
1895 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
1896 {
1897 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1898 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1899 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1900 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1901 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1902 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1903 }
1904
1905 /**
1906 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
1907 * looking at all data.
1908 */
1909 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
1910 {
1911 u32 val;
1912 u32 save_len = len;
1913 int rc = 0;
1914 u32 errcnt;
1915
1916 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1917
1918 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1919 IWL39_RTC_INST_LOWER_BOUND);
1920
1921 errcnt = 0;
1922 for (; len > 0; len -= sizeof(u32), image++) {
1923 /* read data comes through single port, auto-incr addr */
1924 /* NOTE: Use the debugless read so we don't flood kernel log
1925 * if IWL_DL_IO is set */
1926 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1927 if (val != le32_to_cpu(*image)) {
1928 IWL_ERR(priv, "uCode INST section is invalid at "
1929 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1930 save_len - len, val, le32_to_cpu(*image));
1931 rc = -EIO;
1932 errcnt++;
1933 if (errcnt >= 20)
1934 break;
1935 }
1936 }
1937
1938
1939 if (!errcnt)
1940 IWL_DEBUG_INFO(priv,
1941 "ucode image in INSTRUCTION memory is good\n");
1942
1943 return rc;
1944 }
1945
1946
1947 /**
1948 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
1949 * using sample data 100 bytes apart. If these sample points are good,
1950 * it's a pretty good bet that everything between them is good, too.
1951 */
1952 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
1953 {
1954 u32 val;
1955 int rc = 0;
1956 u32 errcnt = 0;
1957 u32 i;
1958
1959 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1960
1961 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
1962 /* read data comes through single port, auto-incr addr */
1963 /* NOTE: Use the debugless read so we don't flood kernel log
1964 * if IWL_DL_IO is set */
1965 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1966 i + IWL39_RTC_INST_LOWER_BOUND);
1967 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1968 if (val != le32_to_cpu(*image)) {
1969 #if 0 /* Enable this if you want to see details */
1970 IWL_ERR(priv, "uCode INST section is invalid at "
1971 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1972 i, val, *image);
1973 #endif
1974 rc = -EIO;
1975 errcnt++;
1976 if (errcnt >= 3)
1977 break;
1978 }
1979 }
1980
1981 return rc;
1982 }
1983
1984
1985 /**
1986 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
1987 * and verify its contents
1988 */
1989 static int iwl3945_verify_ucode(struct iwl_priv *priv)
1990 {
1991 __le32 *image;
1992 u32 len;
1993 int rc = 0;
1994
1995 /* Try bootstrap */
1996 image = (__le32 *)priv->ucode_boot.v_addr;
1997 len = priv->ucode_boot.len;
1998 rc = iwl3945_verify_inst_sparse(priv, image, len);
1999 if (rc == 0) {
2000 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2001 return 0;
2002 }
2003
2004 /* Try initialize */
2005 image = (__le32 *)priv->ucode_init.v_addr;
2006 len = priv->ucode_init.len;
2007 rc = iwl3945_verify_inst_sparse(priv, image, len);
2008 if (rc == 0) {
2009 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2010 return 0;
2011 }
2012
2013 /* Try runtime/protocol */
2014 image = (__le32 *)priv->ucode_code.v_addr;
2015 len = priv->ucode_code.len;
2016 rc = iwl3945_verify_inst_sparse(priv, image, len);
2017 if (rc == 0) {
2018 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2019 return 0;
2020 }
2021
2022 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2023
2024 /* Since nothing seems to match, show first several data entries in
2025 * instruction SRAM, so maybe visual inspection will give a clue.
2026 * Selection of bootstrap image (vs. other images) is arbitrary. */
2027 image = (__le32 *)priv->ucode_boot.v_addr;
2028 len = priv->ucode_boot.len;
2029 rc = iwl3945_verify_inst_full(priv, image, len);
2030
2031 return rc;
2032 }
2033
2034 static void iwl3945_nic_start(struct iwl_priv *priv)
2035 {
2036 /* Remove all resets to allow NIC to operate */
2037 iwl_write32(priv, CSR_RESET, 0);
2038 }
2039
2040 /**
2041 * iwl3945_read_ucode - Read uCode images from disk file.
2042 *
2043 * Copy into buffers for card to fetch via bus-mastering
2044 */
2045 static int iwl3945_read_ucode(struct iwl_priv *priv)
2046 {
2047 const struct iwl_ucode_header *ucode;
2048 int ret = -EINVAL, index;
2049 const struct firmware *ucode_raw;
2050 /* firmware file name contains uCode/driver compatibility version */
2051 const char *name_pre = priv->cfg->fw_name_pre;
2052 const unsigned int api_max = priv->cfg->ucode_api_max;
2053 const unsigned int api_min = priv->cfg->ucode_api_min;
2054 char buf[25];
2055 u8 *src;
2056 size_t len;
2057 u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
2058
2059 /* Ask kernel firmware_class module to get the boot firmware off disk.
2060 * request_firmware() is synchronous, file is in memory on return. */
2061 for (index = api_max; index >= api_min; index--) {
2062 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
2063 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
2064 if (ret < 0) {
2065 IWL_ERR(priv, "%s firmware file req failed: %d\n",
2066 buf, ret);
2067 if (ret == -ENOENT)
2068 continue;
2069 else
2070 goto error;
2071 } else {
2072 if (index < api_max)
2073 IWL_ERR(priv, "Loaded firmware %s, "
2074 "which is deprecated. "
2075 " Please use API v%u instead.\n",
2076 buf, api_max);
2077 IWL_DEBUG_INFO(priv, "Got firmware '%s' file "
2078 "(%zd bytes) from disk\n",
2079 buf, ucode_raw->size);
2080 break;
2081 }
2082 }
2083
2084 if (ret < 0)
2085 goto error;
2086
2087 /* Make sure that we got at least our header! */
2088 if (ucode_raw->size < priv->cfg->ops->ucode->get_header_size(1)) {
2089 IWL_ERR(priv, "File size way too small!\n");
2090 ret = -EINVAL;
2091 goto err_release;
2092 }
2093
2094 /* Data from ucode file: header followed by uCode images */
2095 ucode = (struct iwl_ucode_header *)ucode_raw->data;
2096
2097 priv->ucode_ver = le32_to_cpu(ucode->ver);
2098 api_ver = IWL_UCODE_API(priv->ucode_ver);
2099 inst_size = priv->cfg->ops->ucode->get_inst_size(ucode, api_ver);
2100 data_size = priv->cfg->ops->ucode->get_data_size(ucode, api_ver);
2101 init_size = priv->cfg->ops->ucode->get_init_size(ucode, api_ver);
2102 init_data_size =
2103 priv->cfg->ops->ucode->get_init_data_size(ucode, api_ver);
2104 boot_size = priv->cfg->ops->ucode->get_boot_size(ucode, api_ver);
2105 src = priv->cfg->ops->ucode->get_data(ucode, api_ver);
2106
2107 /* api_ver should match the api version forming part of the
2108 * firmware filename ... but we don't check for that and only rely
2109 * on the API version read from firmware header from here on forward */
2110
2111 if (api_ver < api_min || api_ver > api_max) {
2112 IWL_ERR(priv, "Driver unable to support your firmware API. "
2113 "Driver supports v%u, firmware is v%u.\n",
2114 api_max, api_ver);
2115 priv->ucode_ver = 0;
2116 ret = -EINVAL;
2117 goto err_release;
2118 }
2119 if (api_ver != api_max)
2120 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
2121 "got %u. New firmware can be obtained "
2122 "from http://www.intellinuxwireless.org.\n",
2123 api_max, api_ver);
2124
2125 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
2126 IWL_UCODE_MAJOR(priv->ucode_ver),
2127 IWL_UCODE_MINOR(priv->ucode_ver),
2128 IWL_UCODE_API(priv->ucode_ver),
2129 IWL_UCODE_SERIAL(priv->ucode_ver));
2130
2131 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2132 priv->ucode_ver);
2133 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
2134 inst_size);
2135 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
2136 data_size);
2137 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
2138 init_size);
2139 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
2140 init_data_size);
2141 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
2142 boot_size);
2143
2144
2145 /* Verify size of file vs. image size info in file's header */
2146 if (ucode_raw->size != priv->cfg->ops->ucode->get_header_size(api_ver) +
2147 inst_size + data_size + init_size +
2148 init_data_size + boot_size) {
2149
2150 IWL_DEBUG_INFO(priv,
2151 "uCode file size %zd does not match expected size\n",
2152 ucode_raw->size);
2153 ret = -EINVAL;
2154 goto err_release;
2155 }
2156
2157 /* Verify that uCode images will fit in card's SRAM */
2158 if (inst_size > IWL39_MAX_INST_SIZE) {
2159 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
2160 inst_size);
2161 ret = -EINVAL;
2162 goto err_release;
2163 }
2164
2165 if (data_size > IWL39_MAX_DATA_SIZE) {
2166 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
2167 data_size);
2168 ret = -EINVAL;
2169 goto err_release;
2170 }
2171 if (init_size > IWL39_MAX_INST_SIZE) {
2172 IWL_DEBUG_INFO(priv,
2173 "uCode init instr len %d too large to fit in\n",
2174 init_size);
2175 ret = -EINVAL;
2176 goto err_release;
2177 }
2178 if (init_data_size > IWL39_MAX_DATA_SIZE) {
2179 IWL_DEBUG_INFO(priv,
2180 "uCode init data len %d too large to fit in\n",
2181 init_data_size);
2182 ret = -EINVAL;
2183 goto err_release;
2184 }
2185 if (boot_size > IWL39_MAX_BSM_SIZE) {
2186 IWL_DEBUG_INFO(priv,
2187 "uCode boot instr len %d too large to fit in\n",
2188 boot_size);
2189 ret = -EINVAL;
2190 goto err_release;
2191 }
2192
2193 /* Allocate ucode buffers for card's bus-master loading ... */
2194
2195 /* Runtime instructions and 2 copies of data:
2196 * 1) unmodified from disk
2197 * 2) backup cache for save/restore during power-downs */
2198 priv->ucode_code.len = inst_size;
2199 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2200
2201 priv->ucode_data.len = data_size;
2202 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2203
2204 priv->ucode_data_backup.len = data_size;
2205 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2206
2207 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2208 !priv->ucode_data_backup.v_addr)
2209 goto err_pci_alloc;
2210
2211 /* Initialization instructions and data */
2212 if (init_size && init_data_size) {
2213 priv->ucode_init.len = init_size;
2214 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2215
2216 priv->ucode_init_data.len = init_data_size;
2217 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2218
2219 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2220 goto err_pci_alloc;
2221 }
2222
2223 /* Bootstrap (instructions only, no data) */
2224 if (boot_size) {
2225 priv->ucode_boot.len = boot_size;
2226 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2227
2228 if (!priv->ucode_boot.v_addr)
2229 goto err_pci_alloc;
2230 }
2231
2232 /* Copy images into buffers for card's bus-master reads ... */
2233
2234 /* Runtime instructions (first block of data in file) */
2235 len = inst_size;
2236 IWL_DEBUG_INFO(priv,
2237 "Copying (but not loading) uCode instr len %zd\n", len);
2238 memcpy(priv->ucode_code.v_addr, src, len);
2239 src += len;
2240
2241 IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2242 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2243
2244 /* Runtime data (2nd block)
2245 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
2246 len = data_size;
2247 IWL_DEBUG_INFO(priv,
2248 "Copying (but not loading) uCode data len %zd\n", len);
2249 memcpy(priv->ucode_data.v_addr, src, len);
2250 memcpy(priv->ucode_data_backup.v_addr, src, len);
2251 src += len;
2252
2253 /* Initialization instructions (3rd block) */
2254 if (init_size) {
2255 len = init_size;
2256 IWL_DEBUG_INFO(priv,
2257 "Copying (but not loading) init instr len %zd\n", len);
2258 memcpy(priv->ucode_init.v_addr, src, len);
2259 src += len;
2260 }
2261
2262 /* Initialization data (4th block) */
2263 if (init_data_size) {
2264 len = init_data_size;
2265 IWL_DEBUG_INFO(priv,
2266 "Copying (but not loading) init data len %zd\n", len);
2267 memcpy(priv->ucode_init_data.v_addr, src, len);
2268 src += len;
2269 }
2270
2271 /* Bootstrap instructions (5th block) */
2272 len = boot_size;
2273 IWL_DEBUG_INFO(priv,
2274 "Copying (but not loading) boot instr len %zd\n", len);
2275 memcpy(priv->ucode_boot.v_addr, src, len);
2276
2277 /* We have our copies now, allow OS release its copies */
2278 release_firmware(ucode_raw);
2279 return 0;
2280
2281 err_pci_alloc:
2282 IWL_ERR(priv, "failed to allocate pci memory\n");
2283 ret = -ENOMEM;
2284 iwl3945_dealloc_ucode_pci(priv);
2285
2286 err_release:
2287 release_firmware(ucode_raw);
2288
2289 error:
2290 return ret;
2291 }
2292
2293
2294 /**
2295 * iwl3945_set_ucode_ptrs - Set uCode address location
2296 *
2297 * Tell initialization uCode where to find runtime uCode.
2298 *
2299 * BSM registers initially contain pointers to initialization uCode.
2300 * We need to replace them to load runtime uCode inst and data,
2301 * and to save runtime data when powering down.
2302 */
2303 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
2304 {
2305 dma_addr_t pinst;
2306 dma_addr_t pdata;
2307
2308 /* bits 31:0 for 3945 */
2309 pinst = priv->ucode_code.p_addr;
2310 pdata = priv->ucode_data_backup.p_addr;
2311
2312 /* Tell bootstrap uCode where to find image to load */
2313 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2314 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2315 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
2316 priv->ucode_data.len);
2317
2318 /* Inst byte count must be last to set up, bit 31 signals uCode
2319 * that all new ptr/size info is in place */
2320 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
2321 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
2322
2323 IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
2324
2325 return 0;
2326 }
2327
2328 /**
2329 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2330 *
2331 * Called after REPLY_ALIVE notification received from "initialize" uCode.
2332 *
2333 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2334 */
2335 static void iwl3945_init_alive_start(struct iwl_priv *priv)
2336 {
2337 /* Check alive response for "valid" sign from uCode */
2338 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
2339 /* We had an error bringing up the hardware, so take it
2340 * all the way back down so we can try again */
2341 IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n");
2342 goto restart;
2343 }
2344
2345 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2346 * This is a paranoid check, because we would not have gotten the
2347 * "initialize" alive if code weren't properly loaded. */
2348 if (iwl3945_verify_ucode(priv)) {
2349 /* Runtime instruction load was bad;
2350 * take it all the way back down so we can try again */
2351 IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
2352 goto restart;
2353 }
2354
2355 /* Send pointers to protocol/runtime uCode image ... init code will
2356 * load and launch runtime uCode, which will send us another "Alive"
2357 * notification. */
2358 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
2359 if (iwl3945_set_ucode_ptrs(priv)) {
2360 /* Runtime instruction load won't happen;
2361 * take it all the way back down so we can try again */
2362 IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
2363 goto restart;
2364 }
2365 return;
2366
2367 restart:
2368 queue_work(priv->workqueue, &priv->restart);
2369 }
2370
2371 /**
2372 * iwl3945_alive_start - called after REPLY_ALIVE notification received
2373 * from protocol/runtime uCode (initialization uCode's
2374 * Alive gets handled by iwl3945_init_alive_start()).
2375 */
2376 static void iwl3945_alive_start(struct iwl_priv *priv)
2377 {
2378 int thermal_spin = 0;
2379 u32 rfkill;
2380
2381 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2382
2383 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2384 /* We had an error bringing up the hardware, so take it
2385 * all the way back down so we can try again */
2386 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2387 goto restart;
2388 }
2389
2390 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2391 * This is a paranoid check, because we would not have gotten the
2392 * "runtime" alive if code weren't properly loaded. */
2393 if (iwl3945_verify_ucode(priv)) {
2394 /* Runtime instruction load was bad;
2395 * take it all the way back down so we can try again */
2396 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2397 goto restart;
2398 }
2399
2400 iwl_clear_stations_table(priv);
2401
2402 rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
2403 IWL_DEBUG_INFO(priv, "RFKILL status: 0x%x\n", rfkill);
2404
2405 if (rfkill & 0x1) {
2406 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2407 /* if RFKILL is not on, then wait for thermal
2408 * sensor in adapter to kick in */
2409 while (iwl3945_hw_get_temperature(priv) == 0) {
2410 thermal_spin++;
2411 udelay(10);
2412 }
2413
2414 if (thermal_spin)
2415 IWL_DEBUG_INFO(priv, "Thermal calibration took %dus\n",
2416 thermal_spin * 10);
2417 } else
2418 set_bit(STATUS_RF_KILL_HW, &priv->status);
2419
2420 /* After the ALIVE response, we can send commands to 3945 uCode */
2421 set_bit(STATUS_ALIVE, &priv->status);
2422
2423 if (iwl_is_rfkill(priv))
2424 return;
2425
2426 ieee80211_wake_queues(priv->hw);
2427
2428 priv->active_rate = priv->rates_mask;
2429 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2430
2431 iwl_power_update_mode(priv, false);
2432
2433 if (iwl_is_associated(priv)) {
2434 struct iwl3945_rxon_cmd *active_rxon =
2435 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
2436
2437 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2438 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2439 } else {
2440 /* Initialize our rx_config data */
2441 iwl_connection_init_rx_config(priv, priv->iw_mode);
2442 }
2443
2444 /* Configure Bluetooth device coexistence support */
2445 iwl_send_bt_config(priv);
2446
2447 /* Configure the adapter for unassociated operation */
2448 iwlcore_commit_rxon(priv);
2449
2450 iwl3945_reg_txpower_periodic(priv);
2451
2452 iwl3945_led_register(priv);
2453
2454 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2455 set_bit(STATUS_READY, &priv->status);
2456 wake_up_interruptible(&priv->wait_command_queue);
2457
2458 /* reassociate for ADHOC mode */
2459 if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
2460 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
2461 priv->vif);
2462 if (beacon)
2463 iwl_mac_beacon_update(priv->hw, beacon);
2464 }
2465
2466 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2467 iwl_set_mode(priv, priv->iw_mode);
2468
2469 return;
2470
2471 restart:
2472 queue_work(priv->workqueue, &priv->restart);
2473 }
2474
2475 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
2476
2477 static void __iwl3945_down(struct iwl_priv *priv)
2478 {
2479 unsigned long flags;
2480 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2481 struct ieee80211_conf *conf = NULL;
2482
2483 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2484
2485 conf = ieee80211_get_hw_conf(priv->hw);
2486
2487 if (!exit_pending)
2488 set_bit(STATUS_EXIT_PENDING, &priv->status);
2489
2490 iwl3945_led_unregister(priv);
2491 iwl_clear_stations_table(priv);
2492
2493 /* Unblock any waiting calls */
2494 wake_up_interruptible_all(&priv->wait_command_queue);
2495
2496 /* Wipe out the EXIT_PENDING status bit if we are not actually
2497 * exiting the module */
2498 if (!exit_pending)
2499 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2500
2501 /* stop and reset the on-board processor */
2502 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2503
2504 /* tell the device to stop sending interrupts */
2505 spin_lock_irqsave(&priv->lock, flags);
2506 iwl_disable_interrupts(priv);
2507 spin_unlock_irqrestore(&priv->lock, flags);
2508 iwl_synchronize_irq(priv);
2509
2510 if (priv->mac80211_registered)
2511 ieee80211_stop_queues(priv->hw);
2512
2513 /* If we have not previously called iwl3945_init() then
2514 * clear all bits but the RF Kill bits and return */
2515 if (!iwl_is_init(priv)) {
2516 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2517 STATUS_RF_KILL_HW |
2518 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2519 STATUS_GEO_CONFIGURED |
2520 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2521 STATUS_EXIT_PENDING;
2522 goto exit;
2523 }
2524
2525 /* ...otherwise clear out all the status bits but the RF Kill
2526 * bit and continue taking the NIC down. */
2527 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2528 STATUS_RF_KILL_HW |
2529 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2530 STATUS_GEO_CONFIGURED |
2531 test_bit(STATUS_FW_ERROR, &priv->status) <<
2532 STATUS_FW_ERROR |
2533 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2534 STATUS_EXIT_PENDING;
2535
2536 priv->cfg->ops->lib->apm_ops.reset(priv);
2537 spin_lock_irqsave(&priv->lock, flags);
2538 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2539 spin_unlock_irqrestore(&priv->lock, flags);
2540
2541 iwl3945_hw_txq_ctx_stop(priv);
2542 iwl3945_hw_rxq_stop(priv);
2543
2544 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2545 APMG_CLK_VAL_DMA_CLK_RQT);
2546
2547 udelay(5);
2548
2549 if (exit_pending)
2550 priv->cfg->ops->lib->apm_ops.stop(priv);
2551 else
2552 priv->cfg->ops->lib->apm_ops.reset(priv);
2553
2554 exit:
2555 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2556
2557 if (priv->ibss_beacon)
2558 dev_kfree_skb(priv->ibss_beacon);
2559 priv->ibss_beacon = NULL;
2560
2561 /* clear out any free frames */
2562 iwl3945_clear_free_frames(priv);
2563 }
2564
2565 static void iwl3945_down(struct iwl_priv *priv)
2566 {
2567 mutex_lock(&priv->mutex);
2568 __iwl3945_down(priv);
2569 mutex_unlock(&priv->mutex);
2570
2571 iwl3945_cancel_deferred_work(priv);
2572 }
2573
2574 #define MAX_HW_RESTARTS 5
2575
2576 static int __iwl3945_up(struct iwl_priv *priv)
2577 {
2578 int rc, i;
2579
2580 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2581 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2582 return -EIO;
2583 }
2584
2585 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2586 IWL_ERR(priv, "ucode not available for device bring up\n");
2587 return -EIO;
2588 }
2589
2590 /* If platform's RF_KILL switch is NOT set to KILL */
2591 if (iwl_read32(priv, CSR_GP_CNTRL) &
2592 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2593 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2594 else {
2595 set_bit(STATUS_RF_KILL_HW, &priv->status);
2596 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2597 return -ENODEV;
2598 }
2599
2600 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2601
2602 rc = iwl3945_hw_nic_init(priv);
2603 if (rc) {
2604 IWL_ERR(priv, "Unable to int nic\n");
2605 return rc;
2606 }
2607
2608 /* make sure rfkill handshake bits are cleared */
2609 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2610 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2611 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2612
2613 /* clear (again), then enable host interrupts */
2614 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2615 iwl_enable_interrupts(priv);
2616
2617 /* really make sure rfkill handshake bits are cleared */
2618 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2619 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2620
2621 /* Copy original ucode data image from disk into backup cache.
2622 * This will be used to initialize the on-board processor's
2623 * data SRAM for a clean start when the runtime program first loads. */
2624 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2625 priv->ucode_data.len);
2626
2627 /* We return success when we resume from suspend and rf_kill is on. */
2628 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
2629 return 0;
2630
2631 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2632
2633 iwl_clear_stations_table(priv);
2634
2635 /* load bootstrap state machine,
2636 * load bootstrap program into processor's memory,
2637 * prepare to load the "initialize" uCode */
2638 priv->cfg->ops->lib->load_ucode(priv);
2639
2640 if (rc) {
2641 IWL_ERR(priv,
2642 "Unable to set up bootstrap uCode: %d\n", rc);
2643 continue;
2644 }
2645
2646 /* start card; "initialize" will load runtime ucode */
2647 iwl3945_nic_start(priv);
2648
2649 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2650
2651 return 0;
2652 }
2653
2654 set_bit(STATUS_EXIT_PENDING, &priv->status);
2655 __iwl3945_down(priv);
2656 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2657
2658 /* tried to restart and config the device for as long as our
2659 * patience could withstand */
2660 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2661 return -EIO;
2662 }
2663
2664
2665 /*****************************************************************************
2666 *
2667 * Workqueue callbacks
2668 *
2669 *****************************************************************************/
2670
2671 static void iwl3945_bg_init_alive_start(struct work_struct *data)
2672 {
2673 struct iwl_priv *priv =
2674 container_of(data, struct iwl_priv, init_alive_start.work);
2675
2676 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2677 return;
2678
2679 mutex_lock(&priv->mutex);
2680 iwl3945_init_alive_start(priv);
2681 mutex_unlock(&priv->mutex);
2682 }
2683
2684 static void iwl3945_bg_alive_start(struct work_struct *data)
2685 {
2686 struct iwl_priv *priv =
2687 container_of(data, struct iwl_priv, alive_start.work);
2688
2689 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2690 return;
2691
2692 mutex_lock(&priv->mutex);
2693 iwl3945_alive_start(priv);
2694 mutex_unlock(&priv->mutex);
2695 }
2696
2697 static void iwl3945_rfkill_poll(struct work_struct *data)
2698 {
2699 struct iwl_priv *priv =
2700 container_of(data, struct iwl_priv, rfkill_poll.work);
2701
2702 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2703 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2704 else
2705 set_bit(STATUS_RF_KILL_HW, &priv->status);
2706
2707 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
2708 test_bit(STATUS_RF_KILL_HW, &priv->status));
2709
2710 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
2711 round_jiffies_relative(2 * HZ));
2712
2713 }
2714
2715 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
2716 static void iwl3945_bg_request_scan(struct work_struct *data)
2717 {
2718 struct iwl_priv *priv =
2719 container_of(data, struct iwl_priv, request_scan);
2720 struct iwl_host_cmd cmd = {
2721 .id = REPLY_SCAN_CMD,
2722 .len = sizeof(struct iwl3945_scan_cmd),
2723 .flags = CMD_SIZE_HUGE,
2724 };
2725 int rc = 0;
2726 struct iwl3945_scan_cmd *scan;
2727 struct ieee80211_conf *conf = NULL;
2728 u8 n_probes = 0;
2729 enum ieee80211_band band;
2730 bool is_active = false;
2731
2732 conf = ieee80211_get_hw_conf(priv->hw);
2733
2734 mutex_lock(&priv->mutex);
2735
2736 cancel_delayed_work(&priv->scan_check);
2737
2738 if (!iwl_is_ready(priv)) {
2739 IWL_WARN(priv, "request scan called when driver not ready.\n");
2740 goto done;
2741 }
2742
2743 /* Make sure the scan wasn't canceled before this queued work
2744 * was given the chance to run... */
2745 if (!test_bit(STATUS_SCANNING, &priv->status))
2746 goto done;
2747
2748 /* This should never be called or scheduled if there is currently
2749 * a scan active in the hardware. */
2750 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
2751 IWL_DEBUG_INFO(priv, "Multiple concurrent scan requests "
2752 "Ignoring second request.\n");
2753 rc = -EIO;
2754 goto done;
2755 }
2756
2757 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2758 IWL_DEBUG_SCAN(priv, "Aborting scan due to device shutdown\n");
2759 goto done;
2760 }
2761
2762 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2763 IWL_DEBUG_HC(priv,
2764 "Scan request while abort pending. Queuing.\n");
2765 goto done;
2766 }
2767
2768 if (iwl_is_rfkill(priv)) {
2769 IWL_DEBUG_HC(priv, "Aborting scan due to RF Kill activation\n");
2770 goto done;
2771 }
2772
2773 if (!test_bit(STATUS_READY, &priv->status)) {
2774 IWL_DEBUG_HC(priv,
2775 "Scan request while uninitialized. Queuing.\n");
2776 goto done;
2777 }
2778
2779 if (!priv->scan_bands) {
2780 IWL_DEBUG_HC(priv, "Aborting scan due to no requested bands\n");
2781 goto done;
2782 }
2783
2784 if (!priv->scan) {
2785 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
2786 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
2787 if (!priv->scan) {
2788 rc = -ENOMEM;
2789 goto done;
2790 }
2791 }
2792 scan = priv->scan;
2793 memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
2794
2795 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
2796 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
2797
2798 if (iwl_is_associated(priv)) {
2799 u16 interval = 0;
2800 u32 extra;
2801 u32 suspend_time = 100;
2802 u32 scan_suspend_time = 100;
2803 unsigned long flags;
2804
2805 IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
2806
2807 spin_lock_irqsave(&priv->lock, flags);
2808 interval = priv->beacon_int;
2809 spin_unlock_irqrestore(&priv->lock, flags);
2810
2811 scan->suspend_time = 0;
2812 scan->max_out_time = cpu_to_le32(200 * 1024);
2813 if (!interval)
2814 interval = suspend_time;
2815 /*
2816 * suspend time format:
2817 * 0-19: beacon interval in usec (time before exec.)
2818 * 20-23: 0
2819 * 24-31: number of beacons (suspend between channels)
2820 */
2821
2822 extra = (suspend_time / interval) << 24;
2823 scan_suspend_time = 0xFF0FFFFF &
2824 (extra | ((suspend_time % interval) * 1024));
2825
2826 scan->suspend_time = cpu_to_le32(scan_suspend_time);
2827 IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
2828 scan_suspend_time, interval);
2829 }
2830
2831 if (priv->scan_request->n_ssids) {
2832 int i, p = 0;
2833 IWL_DEBUG_SCAN(priv, "Kicking off active scan\n");
2834 for (i = 0; i < priv->scan_request->n_ssids; i++) {
2835 /* always does wildcard anyway */
2836 if (!priv->scan_request->ssids[i].ssid_len)
2837 continue;
2838 scan->direct_scan[p].id = WLAN_EID_SSID;
2839 scan->direct_scan[p].len =
2840 priv->scan_request->ssids[i].ssid_len;
2841 memcpy(scan->direct_scan[p].ssid,
2842 priv->scan_request->ssids[i].ssid,
2843 priv->scan_request->ssids[i].ssid_len);
2844 n_probes++;
2845 p++;
2846 }
2847 is_active = true;
2848 } else
2849 IWL_DEBUG_SCAN(priv, "Kicking off passive scan.\n");
2850
2851 /* We don't build a direct scan probe request; the uCode will do
2852 * that based on the direct_mask added to each channel entry */
2853 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
2854 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
2855 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2856
2857 /* flags + rate selection */
2858
2859 if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
2860 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
2861 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
2862 scan->good_CRC_th = 0;
2863 band = IEEE80211_BAND_2GHZ;
2864 } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
2865 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
2866 /*
2867 * If active scaning is requested but a certain channel
2868 * is marked passive, we can do active scanning if we
2869 * detect transmissions.
2870 */
2871 scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH : 0;
2872 band = IEEE80211_BAND_5GHZ;
2873 } else {
2874 IWL_WARN(priv, "Invalid scan band count\n");
2875 goto done;
2876 }
2877
2878 scan->tx_cmd.len = cpu_to_le16(
2879 iwl_fill_probe_req(priv,
2880 (struct ieee80211_mgmt *)scan->data,
2881 priv->scan_request->ie,
2882 priv->scan_request->ie_len,
2883 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
2884
2885 /* select Rx antennas */
2886 scan->flags |= iwl3945_get_antenna_flags(priv);
2887
2888 if (iwl_is_monitor_mode(priv))
2889 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
2890
2891 scan->channel_count =
2892 iwl3945_get_channels_for_scan(priv, band, is_active, n_probes,
2893 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
2894
2895 if (scan->channel_count == 0) {
2896 IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
2897 goto done;
2898 }
2899
2900 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
2901 scan->channel_count * sizeof(struct iwl3945_scan_channel);
2902 cmd.data = scan;
2903 scan->len = cpu_to_le16(cmd.len);
2904
2905 set_bit(STATUS_SCAN_HW, &priv->status);
2906 rc = iwl_send_cmd_sync(priv, &cmd);
2907 if (rc)
2908 goto done;
2909
2910 queue_delayed_work(priv->workqueue, &priv->scan_check,
2911 IWL_SCAN_CHECK_WATCHDOG);
2912
2913 mutex_unlock(&priv->mutex);
2914 return;
2915
2916 done:
2917 /* can not perform scan make sure we clear scanning
2918 * bits from status so next scan request can be performed.
2919 * if we dont clear scanning status bit here all next scan
2920 * will fail
2921 */
2922 clear_bit(STATUS_SCAN_HW, &priv->status);
2923 clear_bit(STATUS_SCANNING, &priv->status);
2924
2925 /* inform mac80211 scan aborted */
2926 queue_work(priv->workqueue, &priv->scan_completed);
2927 mutex_unlock(&priv->mutex);
2928 }
2929
2930 static void iwl3945_bg_up(struct work_struct *data)
2931 {
2932 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2933
2934 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2935 return;
2936
2937 mutex_lock(&priv->mutex);
2938 __iwl3945_up(priv);
2939 mutex_unlock(&priv->mutex);
2940 }
2941
2942 static void iwl3945_bg_restart(struct work_struct *data)
2943 {
2944 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2945
2946 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2947 return;
2948
2949 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
2950 mutex_lock(&priv->mutex);
2951 priv->vif = NULL;
2952 priv->is_open = 0;
2953 mutex_unlock(&priv->mutex);
2954 iwl3945_down(priv);
2955 ieee80211_restart_hw(priv->hw);
2956 } else {
2957 iwl3945_down(priv);
2958 queue_work(priv->workqueue, &priv->up);
2959 }
2960 }
2961
2962 static void iwl3945_bg_rx_replenish(struct work_struct *data)
2963 {
2964 struct iwl_priv *priv =
2965 container_of(data, struct iwl_priv, rx_replenish);
2966
2967 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2968 return;
2969
2970 mutex_lock(&priv->mutex);
2971 iwl3945_rx_replenish(priv);
2972 mutex_unlock(&priv->mutex);
2973 }
2974
2975 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2976
2977 void iwl3945_post_associate(struct iwl_priv *priv)
2978 {
2979 int rc = 0;
2980 struct ieee80211_conf *conf = NULL;
2981
2982 if (priv->iw_mode == NL80211_IFTYPE_AP) {
2983 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
2984 return;
2985 }
2986
2987
2988 IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
2989 priv->assoc_id, priv->active_rxon.bssid_addr);
2990
2991 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2992 return;
2993
2994 if (!priv->vif || !priv->is_open)
2995 return;
2996
2997 iwl_scan_cancel_timeout(priv, 200);
2998
2999 conf = ieee80211_get_hw_conf(priv->hw);
3000
3001 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3002 iwlcore_commit_rxon(priv);
3003
3004 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3005 iwl_setup_rxon_timing(priv);
3006 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3007 sizeof(priv->rxon_timing), &priv->rxon_timing);
3008 if (rc)
3009 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3010 "Attempting to continue.\n");
3011
3012 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3013
3014 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3015
3016 IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3017 priv->assoc_id, priv->beacon_int);
3018
3019 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3020 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3021 else
3022 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3023
3024 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3025 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3026 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3027 else
3028 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3029
3030 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3031 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3032
3033 }
3034
3035 iwlcore_commit_rxon(priv);
3036
3037 switch (priv->iw_mode) {
3038 case NL80211_IFTYPE_STATION:
3039 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
3040 break;
3041
3042 case NL80211_IFTYPE_ADHOC:
3043
3044 priv->assoc_id = 1;
3045 iwl_add_station(priv, priv->bssid, 0, CMD_SYNC, NULL);
3046 iwl3945_sync_sta(priv, IWL_STA_ID,
3047 (priv->band == IEEE80211_BAND_5GHZ) ?
3048 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
3049 CMD_ASYNC);
3050 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
3051 iwl3945_send_beacon_cmd(priv);
3052
3053 break;
3054
3055 default:
3056 IWL_ERR(priv, "%s Should not be called in %d mode\n",
3057 __func__, priv->iw_mode);
3058 break;
3059 }
3060
3061 iwl_activate_qos(priv, 0);
3062
3063 /* we have just associated, don't start scan too early */
3064 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
3065 }
3066
3067 /*****************************************************************************
3068 *
3069 * mac80211 entry point functions
3070 *
3071 *****************************************************************************/
3072
3073 #define UCODE_READY_TIMEOUT (2 * HZ)
3074
3075 static int iwl3945_mac_start(struct ieee80211_hw *hw)
3076 {
3077 struct iwl_priv *priv = hw->priv;
3078 int ret;
3079
3080 IWL_DEBUG_MAC80211(priv, "enter\n");
3081
3082 /* we should be verifying the device is ready to be opened */
3083 mutex_lock(&priv->mutex);
3084
3085 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3086 * ucode filename and max sizes are card-specific. */
3087
3088 if (!priv->ucode_code.len) {
3089 ret = iwl3945_read_ucode(priv);
3090 if (ret) {
3091 IWL_ERR(priv, "Could not read microcode: %d\n", ret);
3092 mutex_unlock(&priv->mutex);
3093 goto out_release_irq;
3094 }
3095 }
3096
3097 ret = __iwl3945_up(priv);
3098
3099 mutex_unlock(&priv->mutex);
3100
3101 if (ret)
3102 goto out_release_irq;
3103
3104 IWL_DEBUG_INFO(priv, "Start UP work.\n");
3105
3106 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3107 * mac80211 will not be run successfully. */
3108 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3109 test_bit(STATUS_READY, &priv->status),
3110 UCODE_READY_TIMEOUT);
3111 if (!ret) {
3112 if (!test_bit(STATUS_READY, &priv->status)) {
3113 IWL_ERR(priv,
3114 "Wait for START_ALIVE timeout after %dms.\n",
3115 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3116 ret = -ETIMEDOUT;
3117 goto out_release_irq;
3118 }
3119 }
3120
3121 /* ucode is running and will send rfkill notifications,
3122 * no need to poll the killswitch state anymore */
3123 cancel_delayed_work(&priv->rfkill_poll);
3124
3125 priv->is_open = 1;
3126 IWL_DEBUG_MAC80211(priv, "leave\n");
3127 return 0;
3128
3129 out_release_irq:
3130 priv->is_open = 0;
3131 IWL_DEBUG_MAC80211(priv, "leave - failed\n");
3132 return ret;
3133 }
3134
3135 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
3136 {
3137 struct iwl_priv *priv = hw->priv;
3138
3139 IWL_DEBUG_MAC80211(priv, "enter\n");
3140
3141 if (!priv->is_open) {
3142 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
3143 return;
3144 }
3145
3146 priv->is_open = 0;
3147
3148 if (iwl_is_ready_rf(priv)) {
3149 /* stop mac, cancel any scan request and clear
3150 * RXON_FILTER_ASSOC_MSK BIT
3151 */
3152 mutex_lock(&priv->mutex);
3153 iwl_scan_cancel_timeout(priv, 100);
3154 mutex_unlock(&priv->mutex);
3155 }
3156
3157 iwl3945_down(priv);
3158
3159 flush_workqueue(priv->workqueue);
3160
3161 /* start polling the killswitch state again */
3162 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
3163 round_jiffies_relative(2 * HZ));
3164
3165 IWL_DEBUG_MAC80211(priv, "leave\n");
3166 }
3167
3168 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3169 {
3170 struct iwl_priv *priv = hw->priv;
3171
3172 IWL_DEBUG_MAC80211(priv, "enter\n");
3173
3174 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3175 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3176
3177 if (iwl3945_tx_skb(priv, skb))
3178 dev_kfree_skb_any(skb);
3179
3180 IWL_DEBUG_MAC80211(priv, "leave\n");
3181 return NETDEV_TX_OK;
3182 }
3183
3184 void iwl3945_config_ap(struct iwl_priv *priv)
3185 {
3186 int rc = 0;
3187
3188 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3189 return;
3190
3191 /* The following should be done only at AP bring up */
3192 if (!(iwl_is_associated(priv))) {
3193
3194 /* RXON - unassoc (to set timing command) */
3195 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3196 iwlcore_commit_rxon(priv);
3197
3198 /* RXON Timing */
3199 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3200 iwl_setup_rxon_timing(priv);
3201 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3202 sizeof(priv->rxon_timing),
3203 &priv->rxon_timing);
3204 if (rc)
3205 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3206 "Attempting to continue.\n");
3207
3208 /* FIXME: what should be the assoc_id for AP? */
3209 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3210 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3211 priv->staging_rxon.flags |=
3212 RXON_FLG_SHORT_PREAMBLE_MSK;
3213 else
3214 priv->staging_rxon.flags &=
3215 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3216
3217 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3218 if (priv->assoc_capability &
3219 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3220 priv->staging_rxon.flags |=
3221 RXON_FLG_SHORT_SLOT_MSK;
3222 else
3223 priv->staging_rxon.flags &=
3224 ~RXON_FLG_SHORT_SLOT_MSK;
3225
3226 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3227 priv->staging_rxon.flags &=
3228 ~RXON_FLG_SHORT_SLOT_MSK;
3229 }
3230 /* restore RXON assoc */
3231 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3232 iwlcore_commit_rxon(priv);
3233 iwl_add_station(priv, iwl_bcast_addr, 0, CMD_SYNC, NULL);
3234 }
3235 iwl3945_send_beacon_cmd(priv);
3236
3237 /* FIXME - we need to add code here to detect a totally new
3238 * configuration, reset the AP, unassoc, rxon timing, assoc,
3239 * clear sta table, add BCAST sta... */
3240 }
3241
3242 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3243 struct ieee80211_vif *vif,
3244 struct ieee80211_sta *sta,
3245 struct ieee80211_key_conf *key)
3246 {
3247 struct iwl_priv *priv = hw->priv;
3248 const u8 *addr;
3249 int ret = 0;
3250 u8 sta_id = IWL_INVALID_STATION;
3251 u8 static_key;
3252
3253 IWL_DEBUG_MAC80211(priv, "enter\n");
3254
3255 if (iwl3945_mod_params.sw_crypto) {
3256 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
3257 return -EOPNOTSUPP;
3258 }
3259
3260 addr = sta ? sta->addr : iwl_bcast_addr;
3261 static_key = !iwl_is_associated(priv);
3262
3263 if (!static_key) {
3264 sta_id = iwl_find_station(priv, addr);
3265 if (sta_id == IWL_INVALID_STATION) {
3266 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
3267 addr);
3268 return -EINVAL;
3269 }
3270 }
3271
3272 mutex_lock(&priv->mutex);
3273 iwl_scan_cancel_timeout(priv, 100);
3274 mutex_unlock(&priv->mutex);
3275
3276 switch (cmd) {
3277 case SET_KEY:
3278 if (static_key)
3279 ret = iwl3945_set_static_key(priv, key);
3280 else
3281 ret = iwl3945_set_dynamic_key(priv, key, sta_id);
3282 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
3283 break;
3284 case DISABLE_KEY:
3285 if (static_key)
3286 ret = iwl3945_remove_static_key(priv);
3287 else
3288 ret = iwl3945_clear_sta_key_info(priv, sta_id);
3289 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
3290 break;
3291 default:
3292 ret = -EINVAL;
3293 }
3294
3295 IWL_DEBUG_MAC80211(priv, "leave\n");
3296
3297 return ret;
3298 }
3299
3300 /*****************************************************************************
3301 *
3302 * sysfs attributes
3303 *
3304 *****************************************************************************/
3305
3306 #ifdef CONFIG_IWLWIFI_DEBUG
3307
3308 /*
3309 * The following adds a new attribute to the sysfs representation
3310 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3311 * used for controlling the debug level.
3312 *
3313 * See the level definitions in iwl for details.
3314 *
3315 * The debug_level being managed using sysfs below is a per device debug
3316 * level that is used instead of the global debug level if it (the per
3317 * device debug level) is set.
3318 */
3319 static ssize_t show_debug_level(struct device *d,
3320 struct device_attribute *attr, char *buf)
3321 {
3322 struct iwl_priv *priv = dev_get_drvdata(d);
3323 return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
3324 }
3325 static ssize_t store_debug_level(struct device *d,
3326 struct device_attribute *attr,
3327 const char *buf, size_t count)
3328 {
3329 struct iwl_priv *priv = dev_get_drvdata(d);
3330 unsigned long val;
3331 int ret;
3332
3333 ret = strict_strtoul(buf, 0, &val);
3334 if (ret)
3335 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
3336 else {
3337 priv->debug_level = val;
3338 if (iwl_alloc_traffic_mem(priv))
3339 IWL_ERR(priv,
3340 "Not enough memory to generate traffic log\n");
3341 }
3342 return strnlen(buf, count);
3343 }
3344
3345 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3346 show_debug_level, store_debug_level);
3347
3348 #endif /* CONFIG_IWLWIFI_DEBUG */
3349
3350 static ssize_t show_temperature(struct device *d,
3351 struct device_attribute *attr, char *buf)
3352 {
3353 struct iwl_priv *priv = dev_get_drvdata(d);
3354
3355 if (!iwl_is_alive(priv))
3356 return -EAGAIN;
3357
3358 return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
3359 }
3360
3361 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3362
3363 static ssize_t show_tx_power(struct device *d,
3364 struct device_attribute *attr, char *buf)
3365 {
3366 struct iwl_priv *priv = dev_get_drvdata(d);
3367 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3368 }
3369
3370 static ssize_t store_tx_power(struct device *d,
3371 struct device_attribute *attr,
3372 const char *buf, size_t count)
3373 {
3374 struct iwl_priv *priv = dev_get_drvdata(d);
3375 char *p = (char *)buf;
3376 u32 val;
3377
3378 val = simple_strtoul(p, &p, 10);
3379 if (p == buf)
3380 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
3381 else
3382 iwl3945_hw_reg_set_txpower(priv, val);
3383
3384 return count;
3385 }
3386
3387 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3388
3389 static ssize_t show_flags(struct device *d,
3390 struct device_attribute *attr, char *buf)
3391 {
3392 struct iwl_priv *priv = dev_get_drvdata(d);
3393
3394 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3395 }
3396
3397 static ssize_t store_flags(struct device *d,
3398 struct device_attribute *attr,
3399 const char *buf, size_t count)
3400 {
3401 struct iwl_priv *priv = dev_get_drvdata(d);
3402 u32 flags = simple_strtoul(buf, NULL, 0);
3403
3404 mutex_lock(&priv->mutex);
3405 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3406 /* Cancel any currently running scans... */
3407 if (iwl_scan_cancel_timeout(priv, 100))
3408 IWL_WARN(priv, "Could not cancel scan.\n");
3409 else {
3410 IWL_DEBUG_INFO(priv, "Committing rxon.flags = 0x%04X\n",
3411 flags);
3412 priv->staging_rxon.flags = cpu_to_le32(flags);
3413 iwlcore_commit_rxon(priv);
3414 }
3415 }
3416 mutex_unlock(&priv->mutex);
3417
3418 return count;
3419 }
3420
3421 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3422
3423 static ssize_t show_filter_flags(struct device *d,
3424 struct device_attribute *attr, char *buf)
3425 {
3426 struct iwl_priv *priv = dev_get_drvdata(d);
3427
3428 return sprintf(buf, "0x%04X\n",
3429 le32_to_cpu(priv->active_rxon.filter_flags));
3430 }
3431
3432 static ssize_t store_filter_flags(struct device *d,
3433 struct device_attribute *attr,
3434 const char *buf, size_t count)
3435 {
3436 struct iwl_priv *priv = dev_get_drvdata(d);
3437 u32 filter_flags = simple_strtoul(buf, NULL, 0);
3438
3439 mutex_lock(&priv->mutex);
3440 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3441 /* Cancel any currently running scans... */
3442 if (iwl_scan_cancel_timeout(priv, 100))
3443 IWL_WARN(priv, "Could not cancel scan.\n");
3444 else {
3445 IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
3446 "0x%04X\n", filter_flags);
3447 priv->staging_rxon.filter_flags =
3448 cpu_to_le32(filter_flags);
3449 iwlcore_commit_rxon(priv);
3450 }
3451 }
3452 mutex_unlock(&priv->mutex);
3453
3454 return count;
3455 }
3456
3457 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3458 store_filter_flags);
3459
3460 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3461
3462 static ssize_t show_measurement(struct device *d,
3463 struct device_attribute *attr, char *buf)
3464 {
3465 struct iwl_priv *priv = dev_get_drvdata(d);
3466 struct iwl_spectrum_notification measure_report;
3467 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3468 u8 *data = (u8 *)&measure_report;
3469 unsigned long flags;
3470
3471 spin_lock_irqsave(&priv->lock, flags);
3472 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3473 spin_unlock_irqrestore(&priv->lock, flags);
3474 return 0;
3475 }
3476 memcpy(&measure_report, &priv->measure_report, size);
3477 priv->measurement_status = 0;
3478 spin_unlock_irqrestore(&priv->lock, flags);
3479
3480 while (size && (PAGE_SIZE - len)) {
3481 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3482 PAGE_SIZE - len, 1);
3483 len = strlen(buf);
3484 if (PAGE_SIZE - len)
3485 buf[len++] = '\n';
3486
3487 ofs += 16;
3488 size -= min(size, 16U);
3489 }
3490
3491 return len;
3492 }
3493
3494 static ssize_t store_measurement(struct device *d,
3495 struct device_attribute *attr,
3496 const char *buf, size_t count)
3497 {
3498 struct iwl_priv *priv = dev_get_drvdata(d);
3499 struct ieee80211_measurement_params params = {
3500 .channel = le16_to_cpu(priv->active_rxon.channel),
3501 .start_time = cpu_to_le64(priv->last_tsf),
3502 .duration = cpu_to_le16(1),
3503 };
3504 u8 type = IWL_MEASURE_BASIC;
3505 u8 buffer[32];
3506 u8 channel;
3507
3508 if (count) {
3509 char *p = buffer;
3510 strncpy(buffer, buf, min(sizeof(buffer), count));
3511 channel = simple_strtoul(p, NULL, 0);
3512 if (channel)
3513 params.channel = channel;
3514
3515 p = buffer;
3516 while (*p && *p != ' ')
3517 p++;
3518 if (*p)
3519 type = simple_strtoul(p + 1, NULL, 0);
3520 }
3521
3522 IWL_DEBUG_INFO(priv, "Invoking measurement of type %d on "
3523 "channel %d (for '%s')\n", type, params.channel, buf);
3524 iwl3945_get_measurement(priv, &params, type);
3525
3526 return count;
3527 }
3528
3529 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3530 show_measurement, store_measurement);
3531 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
3532
3533 static ssize_t store_retry_rate(struct device *d,
3534 struct device_attribute *attr,
3535 const char *buf, size_t count)
3536 {
3537 struct iwl_priv *priv = dev_get_drvdata(d);
3538
3539 priv->retry_rate = simple_strtoul(buf, NULL, 0);
3540 if (priv->retry_rate <= 0)
3541 priv->retry_rate = 1;
3542
3543 return count;
3544 }
3545
3546 static ssize_t show_retry_rate(struct device *d,
3547 struct device_attribute *attr, char *buf)
3548 {
3549 struct iwl_priv *priv = dev_get_drvdata(d);
3550 return sprintf(buf, "%d", priv->retry_rate);
3551 }
3552
3553 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3554 store_retry_rate);
3555
3556
3557 static ssize_t show_channels(struct device *d,
3558 struct device_attribute *attr, char *buf)
3559 {
3560 /* all this shit doesn't belong into sysfs anyway */
3561 return 0;
3562 }
3563
3564 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3565
3566 static ssize_t show_statistics(struct device *d,
3567 struct device_attribute *attr, char *buf)
3568 {
3569 struct iwl_priv *priv = dev_get_drvdata(d);
3570 u32 size = sizeof(struct iwl3945_notif_statistics);
3571 u32 len = 0, ofs = 0;
3572 u8 *data = (u8 *)&priv->statistics_39;
3573 int rc = 0;
3574
3575 if (!iwl_is_alive(priv))
3576 return -EAGAIN;
3577
3578 mutex_lock(&priv->mutex);
3579 rc = iwl_send_statistics_request(priv, 0);
3580 mutex_unlock(&priv->mutex);
3581
3582 if (rc) {
3583 len = sprintf(buf,
3584 "Error sending statistics request: 0x%08X\n", rc);
3585 return len;
3586 }
3587
3588 while (size && (PAGE_SIZE - len)) {
3589 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3590 PAGE_SIZE - len, 1);
3591 len = strlen(buf);
3592 if (PAGE_SIZE - len)
3593 buf[len++] = '\n';
3594
3595 ofs += 16;
3596 size -= min(size, 16U);
3597 }
3598
3599 return len;
3600 }
3601
3602 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3603
3604 static ssize_t show_antenna(struct device *d,
3605 struct device_attribute *attr, char *buf)
3606 {
3607 struct iwl_priv *priv = dev_get_drvdata(d);
3608
3609 if (!iwl_is_alive(priv))
3610 return -EAGAIN;
3611
3612 return sprintf(buf, "%d\n", iwl3945_mod_params.antenna);
3613 }
3614
3615 static ssize_t store_antenna(struct device *d,
3616 struct device_attribute *attr,
3617 const char *buf, size_t count)
3618 {
3619 struct iwl_priv *priv __maybe_unused = dev_get_drvdata(d);
3620 int ant;
3621
3622 if (count == 0)
3623 return 0;
3624
3625 if (sscanf(buf, "%1i", &ant) != 1) {
3626 IWL_DEBUG_INFO(priv, "not in hex or decimal form.\n");
3627 return count;
3628 }
3629
3630 if ((ant >= 0) && (ant <= 2)) {
3631 IWL_DEBUG_INFO(priv, "Setting antenna select to %d.\n", ant);
3632 iwl3945_mod_params.antenna = (enum iwl3945_antenna)ant;
3633 } else
3634 IWL_DEBUG_INFO(priv, "Bad antenna select value %d.\n", ant);
3635
3636
3637 return count;
3638 }
3639
3640 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
3641
3642 static ssize_t show_status(struct device *d,
3643 struct device_attribute *attr, char *buf)
3644 {
3645 struct iwl_priv *priv = dev_get_drvdata(d);
3646 if (!iwl_is_alive(priv))
3647 return -EAGAIN;
3648 return sprintf(buf, "0x%08x\n", (int)priv->status);
3649 }
3650
3651 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3652
3653 static ssize_t dump_error_log(struct device *d,
3654 struct device_attribute *attr,
3655 const char *buf, size_t count)
3656 {
3657 struct iwl_priv *priv = dev_get_drvdata(d);
3658 char *p = (char *)buf;
3659
3660 if (p[0] == '1')
3661 iwl3945_dump_nic_error_log(priv);
3662
3663 return strnlen(buf, count);
3664 }
3665
3666 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
3667
3668 static ssize_t dump_event_log(struct device *d,
3669 struct device_attribute *attr,
3670 const char *buf, size_t count)
3671 {
3672 struct iwl_priv *priv = dev_get_drvdata(d);
3673 char *p = (char *)buf;
3674
3675 if (p[0] == '1')
3676 iwl3945_dump_nic_event_log(priv);
3677
3678 return strnlen(buf, count);
3679 }
3680
3681 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
3682
3683 /*****************************************************************************
3684 *
3685 * driver setup and tear down
3686 *
3687 *****************************************************************************/
3688
3689 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
3690 {
3691 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3692
3693 init_waitqueue_head(&priv->wait_command_queue);
3694
3695 INIT_WORK(&priv->up, iwl3945_bg_up);
3696 INIT_WORK(&priv->restart, iwl3945_bg_restart);
3697 INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
3698 INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
3699 INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
3700 INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
3701 INIT_DELAYED_WORK(&priv->rfkill_poll, iwl3945_rfkill_poll);
3702 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
3703 INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
3704 INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
3705 INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
3706
3707 iwl3945_hw_setup_deferred_work(priv);
3708
3709 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3710 iwl3945_irq_tasklet, (unsigned long)priv);
3711 }
3712
3713 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
3714 {
3715 iwl3945_hw_cancel_deferred_work(priv);
3716
3717 cancel_delayed_work_sync(&priv->init_alive_start);
3718 cancel_delayed_work(&priv->scan_check);
3719 cancel_delayed_work(&priv->alive_start);
3720 cancel_work_sync(&priv->beacon_update);
3721 }
3722
3723 static struct attribute *iwl3945_sysfs_entries[] = {
3724 &dev_attr_antenna.attr,
3725 &dev_attr_channels.attr,
3726 &dev_attr_dump_errors.attr,
3727 &dev_attr_dump_events.attr,
3728 &dev_attr_flags.attr,
3729 &dev_attr_filter_flags.attr,
3730 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3731 &dev_attr_measurement.attr,
3732 #endif
3733 &dev_attr_retry_rate.attr,
3734 &dev_attr_statistics.attr,
3735 &dev_attr_status.attr,
3736 &dev_attr_temperature.attr,
3737 &dev_attr_tx_power.attr,
3738 #ifdef CONFIG_IWLWIFI_DEBUG
3739 &dev_attr_debug_level.attr,
3740 #endif
3741 NULL
3742 };
3743
3744 static struct attribute_group iwl3945_attribute_group = {
3745 .name = NULL, /* put in device directory */
3746 .attrs = iwl3945_sysfs_entries,
3747 };
3748
3749 static struct ieee80211_ops iwl3945_hw_ops = {
3750 .tx = iwl3945_mac_tx,
3751 .start = iwl3945_mac_start,
3752 .stop = iwl3945_mac_stop,
3753 .add_interface = iwl_mac_add_interface,
3754 .remove_interface = iwl_mac_remove_interface,
3755 .config = iwl_mac_config,
3756 .configure_filter = iwl_configure_filter,
3757 .set_key = iwl3945_mac_set_key,
3758 .get_tx_stats = iwl_mac_get_tx_stats,
3759 .conf_tx = iwl_mac_conf_tx,
3760 .reset_tsf = iwl_mac_reset_tsf,
3761 .bss_info_changed = iwl_bss_info_changed,
3762 .hw_scan = iwl_mac_hw_scan
3763 };
3764
3765 static int iwl3945_init_drv(struct iwl_priv *priv)
3766 {
3767 int ret;
3768 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
3769
3770 priv->retry_rate = 1;
3771 priv->ibss_beacon = NULL;
3772
3773 spin_lock_init(&priv->lock);
3774 spin_lock_init(&priv->sta_lock);
3775 spin_lock_init(&priv->hcmd_lock);
3776
3777 INIT_LIST_HEAD(&priv->free_frames);
3778
3779 mutex_init(&priv->mutex);
3780
3781 /* Clear the driver's (not device's) station table */
3782 iwl_clear_stations_table(priv);
3783
3784 priv->data_retry_limit = -1;
3785 priv->ieee_channels = NULL;
3786 priv->ieee_rates = NULL;
3787 priv->band = IEEE80211_BAND_2GHZ;
3788
3789 priv->iw_mode = NL80211_IFTYPE_STATION;
3790
3791 iwl_reset_qos(priv);
3792
3793 priv->qos_data.qos_active = 0;
3794 priv->qos_data.qos_cap.val = 0;
3795
3796 priv->rates_mask = IWL_RATES_MASK;
3797 priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER;
3798
3799 if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
3800 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
3801 eeprom->version);
3802 ret = -EINVAL;
3803 goto err;
3804 }
3805 ret = iwl_init_channel_map(priv);
3806 if (ret) {
3807 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3808 goto err;
3809 }
3810
3811 /* Set up txpower settings in driver for all channels */
3812 if (iwl3945_txpower_set_from_eeprom(priv)) {
3813 ret = -EIO;
3814 goto err_free_channel_map;
3815 }
3816
3817 ret = iwlcore_init_geos(priv);
3818 if (ret) {
3819 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3820 goto err_free_channel_map;
3821 }
3822 iwl3945_init_hw_rates(priv, priv->ieee_rates);
3823
3824 return 0;
3825
3826 err_free_channel_map:
3827 iwl_free_channel_map(priv);
3828 err:
3829 return ret;
3830 }
3831
3832 static int iwl3945_setup_mac(struct iwl_priv *priv)
3833 {
3834 int ret;
3835 struct ieee80211_hw *hw = priv->hw;
3836
3837 hw->rate_control_algorithm = "iwl-3945-rs";
3838 hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
3839
3840 /* Tell mac80211 our characteristics */
3841 hw->flags = IEEE80211_HW_SIGNAL_DBM |
3842 IEEE80211_HW_NOISE_DBM |
3843 IEEE80211_HW_SPECTRUM_MGMT |
3844 IEEE80211_HW_SUPPORTS_PS |
3845 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
3846
3847 hw->wiphy->interface_modes =
3848 BIT(NL80211_IFTYPE_STATION) |
3849 BIT(NL80211_IFTYPE_ADHOC);
3850
3851 hw->wiphy->custom_regulatory = true;
3852
3853 /* Firmware does not support this */
3854 hw->wiphy->disable_beacon_hints = true;
3855
3856 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX_3945;
3857 /* we create the 802.11 header and a zero-length SSID element */
3858 hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
3859
3860 /* Default value; 4 EDCA QOS priorities */
3861 hw->queues = 4;
3862
3863 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
3864 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3865 &priv->bands[IEEE80211_BAND_2GHZ];
3866
3867 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
3868 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
3869 &priv->bands[IEEE80211_BAND_5GHZ];
3870
3871 ret = ieee80211_register_hw(priv->hw);
3872 if (ret) {
3873 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
3874 return ret;
3875 }
3876 priv->mac80211_registered = 1;
3877
3878 return 0;
3879 }
3880
3881 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3882 {
3883 int err = 0;
3884 struct iwl_priv *priv;
3885 struct ieee80211_hw *hw;
3886 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3887 struct iwl3945_eeprom *eeprom;
3888 unsigned long flags;
3889
3890 /***********************
3891 * 1. Allocating HW data
3892 * ********************/
3893
3894 /* mac80211 allocates memory for this device instance, including
3895 * space for this driver's private structure */
3896 hw = iwl_alloc_all(cfg, &iwl3945_hw_ops);
3897 if (hw == NULL) {
3898 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
3899 err = -ENOMEM;
3900 goto out;
3901 }
3902 priv = hw->priv;
3903 SET_IEEE80211_DEV(hw, &pdev->dev);
3904
3905 /*
3906 * Disabling hardware scan means that mac80211 will perform scans
3907 * "the hard way", rather than using device's scan.
3908 */
3909 if (iwl3945_mod_params.disable_hw_scan) {
3910 IWL_DEBUG_INFO(priv, "Disabling hw_scan\n");
3911 iwl3945_hw_ops.hw_scan = NULL;
3912 }
3913
3914
3915 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3916 priv->cfg = cfg;
3917 priv->pci_dev = pdev;
3918 priv->inta_mask = CSR_INI_SET_MASK;
3919
3920 #ifdef CONFIG_IWLWIFI_DEBUG
3921 atomic_set(&priv->restrict_refcnt, 0);
3922 #endif
3923 if (iwl_alloc_traffic_mem(priv))
3924 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3925
3926 /***************************
3927 * 2. Initializing PCI bus
3928 * *************************/
3929 if (pci_enable_device(pdev)) {
3930 err = -ENODEV;
3931 goto out_ieee80211_free_hw;
3932 }
3933
3934 pci_set_master(pdev);
3935
3936 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3937 if (!err)
3938 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3939 if (err) {
3940 IWL_WARN(priv, "No suitable DMA available.\n");
3941 goto out_pci_disable_device;
3942 }
3943
3944 pci_set_drvdata(pdev, priv);
3945 err = pci_request_regions(pdev, DRV_NAME);
3946 if (err)
3947 goto out_pci_disable_device;
3948
3949 /***********************
3950 * 3. Read REV Register
3951 * ********************/
3952 priv->hw_base = pci_iomap(pdev, 0, 0);
3953 if (!priv->hw_base) {
3954 err = -ENODEV;
3955 goto out_pci_release_regions;
3956 }
3957
3958 IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
3959 (unsigned long long) pci_resource_len(pdev, 0));
3960 IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
3961
3962 /* We disable the RETRY_TIMEOUT register (0x41) to keep
3963 * PCI Tx retries from interfering with C3 CPU state */
3964 pci_write_config_byte(pdev, 0x41, 0x00);
3965
3966 /* this spin lock will be used in apm_ops.init and EEPROM access
3967 * we should init now
3968 */
3969 spin_lock_init(&priv->reg_lock);
3970
3971 /* amp init */
3972 err = priv->cfg->ops->lib->apm_ops.init(priv);
3973 if (err < 0) {
3974 IWL_DEBUG_INFO(priv, "Failed to init the card\n");
3975 goto out_iounmap;
3976 }
3977
3978 /***********************
3979 * 4. Read EEPROM
3980 * ********************/
3981
3982 /* Read the EEPROM */
3983 err = iwl_eeprom_init(priv);
3984 if (err) {
3985 IWL_ERR(priv, "Unable to init EEPROM\n");
3986 goto out_iounmap;
3987 }
3988 /* MAC Address location in EEPROM same for 3945/4965 */
3989 eeprom = (struct iwl3945_eeprom *)priv->eeprom;
3990 memcpy(priv->mac_addr, eeprom->mac_address, ETH_ALEN);
3991 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
3992 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
3993
3994 /***********************
3995 * 5. Setup HW Constants
3996 * ********************/
3997 /* Device-specific setup */
3998 if (iwl3945_hw_set_hw_params(priv)) {
3999 IWL_ERR(priv, "failed to set hw settings\n");
4000 goto out_eeprom_free;
4001 }
4002
4003 /***********************
4004 * 6. Setup priv
4005 * ********************/
4006
4007 err = iwl3945_init_drv(priv);
4008 if (err) {
4009 IWL_ERR(priv, "initializing driver failed\n");
4010 goto out_unset_hw_params;
4011 }
4012
4013 IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
4014 priv->cfg->name);
4015
4016 /***********************
4017 * 7. Setup Services
4018 * ********************/
4019
4020 spin_lock_irqsave(&priv->lock, flags);
4021 iwl_disable_interrupts(priv);
4022 spin_unlock_irqrestore(&priv->lock, flags);
4023
4024 pci_enable_msi(priv->pci_dev);
4025
4026 err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr,
4027 IRQF_SHARED, DRV_NAME, priv);
4028 if (err) {
4029 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
4030 goto out_disable_msi;
4031 }
4032
4033 err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4034 if (err) {
4035 IWL_ERR(priv, "failed to create sysfs device attributes\n");
4036 goto out_release_irq;
4037 }
4038
4039 iwl_set_rxon_channel(priv,
4040 &priv->bands[IEEE80211_BAND_2GHZ].channels[5]);
4041 iwl3945_setup_deferred_work(priv);
4042 iwl3945_setup_rx_handlers(priv);
4043
4044 /*********************************
4045 * 8. Setup and Register mac80211
4046 * *******************************/
4047
4048 iwl_enable_interrupts(priv);
4049
4050 err = iwl3945_setup_mac(priv);
4051 if (err)
4052 goto out_remove_sysfs;
4053
4054 err = iwl_dbgfs_register(priv, DRV_NAME);
4055 if (err)
4056 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
4057
4058 /* Start monitoring the killswitch */
4059 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
4060 2 * HZ);
4061
4062 return 0;
4063
4064 out_remove_sysfs:
4065 destroy_workqueue(priv->workqueue);
4066 priv->workqueue = NULL;
4067 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4068 out_release_irq:
4069 free_irq(priv->pci_dev->irq, priv);
4070 out_disable_msi:
4071 pci_disable_msi(priv->pci_dev);
4072 iwlcore_free_geos(priv);
4073 iwl_free_channel_map(priv);
4074 out_unset_hw_params:
4075 iwl3945_unset_hw_params(priv);
4076 out_eeprom_free:
4077 iwl_eeprom_free(priv);
4078 out_iounmap:
4079 pci_iounmap(pdev, priv->hw_base);
4080 out_pci_release_regions:
4081 pci_release_regions(pdev);
4082 out_pci_disable_device:
4083 pci_set_drvdata(pdev, NULL);
4084 pci_disable_device(pdev);
4085 out_ieee80211_free_hw:
4086 ieee80211_free_hw(priv->hw);
4087 iwl_free_traffic_mem(priv);
4088 out:
4089 return err;
4090 }
4091
4092 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
4093 {
4094 struct iwl_priv *priv = pci_get_drvdata(pdev);
4095 unsigned long flags;
4096
4097 if (!priv)
4098 return;
4099
4100 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
4101
4102 iwl_dbgfs_unregister(priv);
4103
4104 set_bit(STATUS_EXIT_PENDING, &priv->status);
4105
4106 if (priv->mac80211_registered) {
4107 ieee80211_unregister_hw(priv->hw);
4108 priv->mac80211_registered = 0;
4109 } else {
4110 iwl3945_down(priv);
4111 }
4112
4113 /* make sure we flush any pending irq or
4114 * tasklet for the driver
4115 */
4116 spin_lock_irqsave(&priv->lock, flags);
4117 iwl_disable_interrupts(priv);
4118 spin_unlock_irqrestore(&priv->lock, flags);
4119
4120 iwl_synchronize_irq(priv);
4121
4122 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4123
4124 cancel_delayed_work_sync(&priv->rfkill_poll);
4125
4126 iwl3945_dealloc_ucode_pci(priv);
4127
4128 if (priv->rxq.bd)
4129 iwl3945_rx_queue_free(priv, &priv->rxq);
4130 iwl3945_hw_txq_ctx_free(priv);
4131
4132 iwl3945_unset_hw_params(priv);
4133 iwl_clear_stations_table(priv);
4134
4135 /*netif_stop_queue(dev); */
4136 flush_workqueue(priv->workqueue);
4137
4138 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4139 * priv->workqueue... so we can't take down the workqueue
4140 * until now... */
4141 destroy_workqueue(priv->workqueue);
4142 priv->workqueue = NULL;
4143 iwl_free_traffic_mem(priv);
4144
4145 free_irq(pdev->irq, priv);
4146 pci_disable_msi(pdev);
4147
4148 pci_iounmap(pdev, priv->hw_base);
4149 pci_release_regions(pdev);
4150 pci_disable_device(pdev);
4151 pci_set_drvdata(pdev, NULL);
4152
4153 iwl_free_channel_map(priv);
4154 iwlcore_free_geos(priv);
4155 kfree(priv->scan);
4156 if (priv->ibss_beacon)
4157 dev_kfree_skb(priv->ibss_beacon);
4158
4159 ieee80211_free_hw(priv->hw);
4160 }
4161
4162
4163 /*****************************************************************************
4164 *
4165 * driver and module entry point
4166 *
4167 *****************************************************************************/
4168
4169 static struct pci_driver iwl3945_driver = {
4170 .name = DRV_NAME,
4171 .id_table = iwl3945_hw_card_ids,
4172 .probe = iwl3945_pci_probe,
4173 .remove = __devexit_p(iwl3945_pci_remove),
4174 #ifdef CONFIG_PM
4175 .suspend = iwl_pci_suspend,
4176 .resume = iwl_pci_resume,
4177 #endif
4178 };
4179
4180 static int __init iwl3945_init(void)
4181 {
4182
4183 int ret;
4184 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4185 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4186
4187 ret = iwl3945_rate_control_register();
4188 if (ret) {
4189 printk(KERN_ERR DRV_NAME
4190 "Unable to register rate control algorithm: %d\n", ret);
4191 return ret;
4192 }
4193
4194 ret = pci_register_driver(&iwl3945_driver);
4195 if (ret) {
4196 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
4197 goto error_register;
4198 }
4199
4200 return ret;
4201
4202 error_register:
4203 iwl3945_rate_control_unregister();
4204 return ret;
4205 }
4206
4207 static void __exit iwl3945_exit(void)
4208 {
4209 pci_unregister_driver(&iwl3945_driver);
4210 iwl3945_rate_control_unregister();
4211 }
4212
4213 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
4214
4215 module_param_named(antenna, iwl3945_mod_params.antenna, int, 0444);
4216 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
4217 module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, 0444);
4218 MODULE_PARM_DESC(swcrypto,
4219 "using software crypto (default 1 [software])\n");
4220 #ifdef CONFIG_IWLWIFI_DEBUG
4221 module_param_named(debug, iwl_debug_level, uint, 0644);
4222 MODULE_PARM_DESC(debug, "debug output mask");
4223 #endif
4224 module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan, int, 0444);
4225 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
4226 module_param_named(fw_restart3945, iwl3945_mod_params.restart_fw, int, 0444);
4227 MODULE_PARM_DESC(fw_restart3945, "restart firmware in case of error");
4228
4229 module_exit(iwl3945_exit);
4230 module_init(iwl3945_init);
kernel-based virtual machine