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FRV: Use generic show_interrupts()
[cris-mirror.git] / drivers / net / wireless / iwlegacy / iwl3945-base.c
blobab87e1b73529e88f81e6096a18dd457bd86b93c3
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2011 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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
31
32 #include <linux/kernel.h>
33 #include <linux/module.h>
34 #include <linux/init.h>
35 #include <linux/pci.h>
36 #include <linux/pci-aspm.h>
37 #include <linux/slab.h>
38 #include <linux/dma-mapping.h>
39 #include <linux/delay.h>
40 #include <linux/sched.h>
41 #include <linux/skbuff.h>
42 #include <linux/netdevice.h>
43 #include <linux/wireless.h>
44 #include <linux/firmware.h>
45 #include <linux/etherdevice.h>
46 #include <linux/if_arp.h>
47
48 #include <net/ieee80211_radiotap.h>
49 #include <net/mac80211.h>
50
51 #include <asm/div64.h>
52
53 #define DRV_NAME "iwl3945"
54
55 #include "iwl-fh.h"
56 #include "iwl-3945-fh.h"
57 #include "iwl-commands.h"
58 #include "iwl-sta.h"
59 #include "iwl-3945.h"
60 #include "iwl-core.h"
61 #include "iwl-helpers.h"
62 #include "iwl-dev.h"
63 #include "iwl-spectrum.h"
64
65 /*
66 * module name, copyright, version, etc.
67 */
68
69 #define DRV_DESCRIPTION \
70 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
71
72 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
73 #define VD "d"
74 #else
75 #define VD
76 #endif
77
78 /*
79 * add "s" to indicate spectrum measurement included.
80 * we add it here to be consistent with previous releases in which
81 * this was configurable.
82 */
83 #define DRV_VERSION IWLWIFI_VERSION VD "s"
84 #define DRV_COPYRIGHT "Copyright(c) 2003-2011 Intel Corporation"
85 #define DRV_AUTHOR "<ilw@linux.intel.com>"
86
87 MODULE_DESCRIPTION(DRV_DESCRIPTION);
88 MODULE_VERSION(DRV_VERSION);
89 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
90 MODULE_LICENSE("GPL");
91
92 /* module parameters */
93 struct iwl_mod_params iwl3945_mod_params = {
94 .sw_crypto = 1,
95 .restart_fw = 1,
96 /* the rest are 0 by default */
97 };
98
99 /**
100 * iwl3945_get_antenna_flags - Get antenna flags for RXON command
101 * @priv: eeprom and antenna fields are used to determine antenna flags
102 *
103 * priv->eeprom39 is used to determine if antenna AUX/MAIN are reversed
104 * iwl3945_mod_params.antenna specifies the antenna diversity mode:
105 *
106 * IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
107 * IWL_ANTENNA_MAIN - Force MAIN antenna
108 * IWL_ANTENNA_AUX - Force AUX antenna
109 */
110 __le32 iwl3945_get_antenna_flags(const struct iwl_priv *priv)
111 {
112 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
113
114 switch (iwl3945_mod_params.antenna) {
115 case IWL_ANTENNA_DIVERSITY:
116 return 0;
117
118 case IWL_ANTENNA_MAIN:
119 if (eeprom->antenna_switch_type)
120 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
121 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
122
123 case IWL_ANTENNA_AUX:
124 if (eeprom->antenna_switch_type)
125 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
126 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
127 }
128
129 /* bad antenna selector value */
130 IWL_ERR(priv, "Bad antenna selector value (0x%x)\n",
131 iwl3945_mod_params.antenna);
132
133 return 0; /* "diversity" is default if error */
134 }
135
136 static int iwl3945_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
137 struct ieee80211_key_conf *keyconf,
138 u8 sta_id)
139 {
140 unsigned long flags;
141 __le16 key_flags = 0;
142 int ret;
143
144 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
145 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
146
147 if (sta_id == priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id)
148 key_flags |= STA_KEY_MULTICAST_MSK;
149
150 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
151 keyconf->hw_key_idx = keyconf->keyidx;
152 key_flags &= ~STA_KEY_FLG_INVALID;
153
154 spin_lock_irqsave(&priv->sta_lock, flags);
155 priv->stations[sta_id].keyinfo.cipher = keyconf->cipher;
156 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
157 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
158 keyconf->keylen);
159
160 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
161 keyconf->keylen);
162
163 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
164 == STA_KEY_FLG_NO_ENC)
165 priv->stations[sta_id].sta.key.key_offset =
166 iwl_legacy_get_free_ucode_key_index(priv);
167 /* else, we are overriding an existing key => no need to allocated room
168 * in uCode. */
169
170 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
171 "no space for a new key");
172
173 priv->stations[sta_id].sta.key.key_flags = key_flags;
174 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
175 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
176
177 IWL_DEBUG_INFO(priv, "hwcrypto: modify ucode station key info\n");
178
179 ret = iwl_legacy_send_add_sta(priv,
180 &priv->stations[sta_id].sta, CMD_ASYNC);
181
182 spin_unlock_irqrestore(&priv->sta_lock, flags);
183
184 return ret;
185 }
186
187 static int iwl3945_set_tkip_dynamic_key_info(struct iwl_priv *priv,
188 struct ieee80211_key_conf *keyconf,
189 u8 sta_id)
190 {
191 return -EOPNOTSUPP;
192 }
193
194 static int iwl3945_set_wep_dynamic_key_info(struct iwl_priv *priv,
195 struct ieee80211_key_conf *keyconf,
196 u8 sta_id)
197 {
198 return -EOPNOTSUPP;
199 }
200
201 static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
202 {
203 unsigned long flags;
204 struct iwl_legacy_addsta_cmd sta_cmd;
205
206 spin_lock_irqsave(&priv->sta_lock, flags);
207 memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl_hw_key));
208 memset(&priv->stations[sta_id].sta.key, 0,
209 sizeof(struct iwl4965_keyinfo));
210 priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
211 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
212 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
213 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_legacy_addsta_cmd));
214 spin_unlock_irqrestore(&priv->sta_lock, flags);
215
216 IWL_DEBUG_INFO(priv, "hwcrypto: clear ucode station key info\n");
217 return iwl_legacy_send_add_sta(priv, &sta_cmd, CMD_SYNC);
218 }
219
220 static int iwl3945_set_dynamic_key(struct iwl_priv *priv,
221 struct ieee80211_key_conf *keyconf, u8 sta_id)
222 {
223 int ret = 0;
224
225 keyconf->hw_key_idx = HW_KEY_DYNAMIC;
226
227 switch (keyconf->cipher) {
228 case WLAN_CIPHER_SUITE_CCMP:
229 ret = iwl3945_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
230 break;
231 case WLAN_CIPHER_SUITE_TKIP:
232 ret = iwl3945_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
233 break;
234 case WLAN_CIPHER_SUITE_WEP40:
235 case WLAN_CIPHER_SUITE_WEP104:
236 ret = iwl3945_set_wep_dynamic_key_info(priv, keyconf, sta_id);
237 break;
238 default:
239 IWL_ERR(priv, "Unknown alg: %s alg=%x\n", __func__,
240 keyconf->cipher);
241 ret = -EINVAL;
242 }
243
244 IWL_DEBUG_WEP(priv, "Set dynamic key: alg=%x len=%d idx=%d sta=%d ret=%d\n",
245 keyconf->cipher, keyconf->keylen, keyconf->keyidx,
246 sta_id, ret);
247
248 return ret;
249 }
250
251 static int iwl3945_remove_static_key(struct iwl_priv *priv)
252 {
253 int ret = -EOPNOTSUPP;
254
255 return ret;
256 }
257
258 static int iwl3945_set_static_key(struct iwl_priv *priv,
259 struct ieee80211_key_conf *key)
260 {
261 if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
262 key->cipher == WLAN_CIPHER_SUITE_WEP104)
263 return -EOPNOTSUPP;
264
265 IWL_ERR(priv, "Static key invalid: cipher %x\n", key->cipher);
266 return -EINVAL;
267 }
268
269 static void iwl3945_clear_free_frames(struct iwl_priv *priv)
270 {
271 struct list_head *element;
272
273 IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
274 priv->frames_count);
275
276 while (!list_empty(&priv->free_frames)) {
277 element = priv->free_frames.next;
278 list_del(element);
279 kfree(list_entry(element, struct iwl3945_frame, list));
280 priv->frames_count--;
281 }
282
283 if (priv->frames_count) {
284 IWL_WARN(priv, "%d frames still in use. Did we lose one?\n",
285 priv->frames_count);
286 priv->frames_count = 0;
287 }
288 }
289
290 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv)
291 {
292 struct iwl3945_frame *frame;
293 struct list_head *element;
294 if (list_empty(&priv->free_frames)) {
295 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
296 if (!frame) {
297 IWL_ERR(priv, "Could not allocate frame!\n");
298 return NULL;
299 }
300
301 priv->frames_count++;
302 return frame;
303 }
304
305 element = priv->free_frames.next;
306 list_del(element);
307 return list_entry(element, struct iwl3945_frame, list);
308 }
309
310 static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame)
311 {
312 memset(frame, 0, sizeof(*frame));
313 list_add(&frame->list, &priv->free_frames);
314 }
315
316 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
317 struct ieee80211_hdr *hdr,
318 int left)
319 {
320
321 if (!iwl_legacy_is_associated(priv, IWL_RXON_CTX_BSS) || !priv->beacon_skb)
322 return 0;
323
324 if (priv->beacon_skb->len > left)
325 return 0;
326
327 memcpy(hdr, priv->beacon_skb->data, priv->beacon_skb->len);
328
329 return priv->beacon_skb->len;
330 }
331
332 static int iwl3945_send_beacon_cmd(struct iwl_priv *priv)
333 {
334 struct iwl3945_frame *frame;
335 unsigned int frame_size;
336 int rc;
337 u8 rate;
338
339 frame = iwl3945_get_free_frame(priv);
340
341 if (!frame) {
342 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
343 "command.\n");
344 return -ENOMEM;
345 }
346
347 rate = iwl_legacy_get_lowest_plcp(priv,
348 &priv->contexts[IWL_RXON_CTX_BSS]);
349
350 frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
351
352 rc = iwl_legacy_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
353 &frame->u.cmd[0]);
354
355 iwl3945_free_frame(priv, frame);
356
357 return rc;
358 }
359
360 static void iwl3945_unset_hw_params(struct iwl_priv *priv)
361 {
362 if (priv->_3945.shared_virt)
363 dma_free_coherent(&priv->pci_dev->dev,
364 sizeof(struct iwl3945_shared),
365 priv->_3945.shared_virt,
366 priv->_3945.shared_phys);
367 }
368
369 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
370 struct ieee80211_tx_info *info,
371 struct iwl_device_cmd *cmd,
372 struct sk_buff *skb_frag,
373 int sta_id)
374 {
375 struct iwl3945_tx_cmd *tx_cmd = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
376 struct iwl_hw_key *keyinfo = &priv->stations[sta_id].keyinfo;
377
378 tx_cmd->sec_ctl = 0;
379
380 switch (keyinfo->cipher) {
381 case WLAN_CIPHER_SUITE_CCMP:
382 tx_cmd->sec_ctl = TX_CMD_SEC_CCM;
383 memcpy(tx_cmd->key, keyinfo->key, keyinfo->keylen);
384 IWL_DEBUG_TX(priv, "tx_cmd with AES hwcrypto\n");
385 break;
386
387 case WLAN_CIPHER_SUITE_TKIP:
388 break;
389
390 case WLAN_CIPHER_SUITE_WEP104:
391 tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128;
392 /* fall through */
393 case WLAN_CIPHER_SUITE_WEP40:
394 tx_cmd->sec_ctl |= TX_CMD_SEC_WEP |
395 (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
396
397 memcpy(&tx_cmd->key[3], keyinfo->key, keyinfo->keylen);
398
399 IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption "
400 "with key %d\n", info->control.hw_key->hw_key_idx);
401 break;
402
403 default:
404 IWL_ERR(priv, "Unknown encode cipher %x\n", keyinfo->cipher);
405 break;
406 }
407 }
408
409 /*
410 * handle build REPLY_TX command notification.
411 */
412 static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
413 struct iwl_device_cmd *cmd,
414 struct ieee80211_tx_info *info,
415 struct ieee80211_hdr *hdr, u8 std_id)
416 {
417 struct iwl3945_tx_cmd *tx_cmd = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
418 __le32 tx_flags = tx_cmd->tx_flags;
419 __le16 fc = hdr->frame_control;
420
421 tx_cmd->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
422 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
423 tx_flags |= TX_CMD_FLG_ACK_MSK;
424 if (ieee80211_is_mgmt(fc))
425 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
426 if (ieee80211_is_probe_resp(fc) &&
427 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
428 tx_flags |= TX_CMD_FLG_TSF_MSK;
429 } else {
430 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
431 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
432 }
433
434 tx_cmd->sta_id = std_id;
435 if (ieee80211_has_morefrags(fc))
436 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
437
438 if (ieee80211_is_data_qos(fc)) {
439 u8 *qc = ieee80211_get_qos_ctl(hdr);
440 tx_cmd->tid_tspec = qc[0] & 0xf;
441 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
442 } else {
443 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
444 }
445
446 iwl_legacy_tx_cmd_protection(priv, info, fc, &tx_flags);
447
448 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
449 if (ieee80211_is_mgmt(fc)) {
450 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
451 tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(3);
452 else
453 tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(2);
454 } else {
455 tx_cmd->timeout.pm_frame_timeout = 0;
456 }
457
458 tx_cmd->driver_txop = 0;
459 tx_cmd->tx_flags = tx_flags;
460 tx_cmd->next_frame_len = 0;
461 }
462
463 /*
464 * start REPLY_TX command process
465 */
466 static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
467 {
468 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
469 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
470 struct iwl3945_tx_cmd *tx_cmd;
471 struct iwl_tx_queue *txq = NULL;
472 struct iwl_queue *q = NULL;
473 struct iwl_device_cmd *out_cmd;
474 struct iwl_cmd_meta *out_meta;
475 dma_addr_t phys_addr;
476 dma_addr_t txcmd_phys;
477 int txq_id = skb_get_queue_mapping(skb);
478 u16 len, idx, hdr_len;
479 u8 id;
480 u8 unicast;
481 u8 sta_id;
482 u8 tid = 0;
483 __le16 fc;
484 u8 wait_write_ptr = 0;
485 unsigned long flags;
486
487 spin_lock_irqsave(&priv->lock, flags);
488 if (iwl_legacy_is_rfkill(priv)) {
489 IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n");
490 goto drop_unlock;
491 }
492
493 if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
494 IWL_ERR(priv, "ERROR: No TX rate available.\n");
495 goto drop_unlock;
496 }
497
498 unicast = !is_multicast_ether_addr(hdr->addr1);
499 id = 0;
500
501 fc = hdr->frame_control;
502
503 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
504 if (ieee80211_is_auth(fc))
505 IWL_DEBUG_TX(priv, "Sending AUTH frame\n");
506 else if (ieee80211_is_assoc_req(fc))
507 IWL_DEBUG_TX(priv, "Sending ASSOC frame\n");
508 else if (ieee80211_is_reassoc_req(fc))
509 IWL_DEBUG_TX(priv, "Sending REASSOC frame\n");
510 #endif
511
512 spin_unlock_irqrestore(&priv->lock, flags);
513
514 hdr_len = ieee80211_hdrlen(fc);
515
516 /* Find index into station table for destination station */
517 sta_id = iwl_legacy_sta_id_or_broadcast(
518 priv, &priv->contexts[IWL_RXON_CTX_BSS],
519 info->control.sta);
520 if (sta_id == IWL_INVALID_STATION) {
521 IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n",
522 hdr->addr1);
523 goto drop;
524 }
525
526 IWL_DEBUG_RATE(priv, "station Id %d\n", sta_id);
527
528 if (ieee80211_is_data_qos(fc)) {
529 u8 *qc = ieee80211_get_qos_ctl(hdr);
530 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
531 if (unlikely(tid >= MAX_TID_COUNT))
532 goto drop;
533 }
534
535 /* Descriptor for chosen Tx queue */
536 txq = &priv->txq[txq_id];
537 q = &txq->q;
538
539 if ((iwl_legacy_queue_space(q) < q->high_mark))
540 goto drop;
541
542 spin_lock_irqsave(&priv->lock, flags);
543
544 idx = iwl_legacy_get_cmd_index(q, q->write_ptr, 0);
545
546 /* Set up driver data for this TFD */
547 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
548 txq->txb[q->write_ptr].skb = skb;
549 txq->txb[q->write_ptr].ctx = &priv->contexts[IWL_RXON_CTX_BSS];
550
551 /* Init first empty entry in queue's array of Tx/cmd buffers */
552 out_cmd = txq->cmd[idx];
553 out_meta = &txq->meta[idx];
554 tx_cmd = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload;
555 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
556 memset(tx_cmd, 0, sizeof(*tx_cmd));
557
558 /*
559 * Set up the Tx-command (not MAC!) header.
560 * Store the chosen Tx queue and TFD index within the sequence field;
561 * after Tx, uCode's Tx response will return this value so driver can
562 * locate the frame within the tx queue and do post-tx processing.
563 */
564 out_cmd->hdr.cmd = REPLY_TX;
565 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
566 INDEX_TO_SEQ(q->write_ptr)));
567
568 /* Copy MAC header from skb into command buffer */
569 memcpy(tx_cmd->hdr, hdr, hdr_len);
570
571
572 if (info->control.hw_key)
573 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, sta_id);
574
575 /* TODO need this for burst mode later on */
576 iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id);
577
578 /* set is_hcca to 0; it probably will never be implemented */
579 iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
580
581 /* Total # bytes to be transmitted */
582 len = (u16)skb->len;
583 tx_cmd->len = cpu_to_le16(len);
584
585 iwl_legacy_dbg_log_tx_data_frame(priv, len, hdr);
586 iwl_legacy_update_stats(priv, true, fc, len);
587 tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
588 tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
589
590 if (!ieee80211_has_morefrags(hdr->frame_control)) {
591 txq->need_update = 1;
592 } else {
593 wait_write_ptr = 1;
594 txq->need_update = 0;
595 }
596
597 IWL_DEBUG_TX(priv, "sequence nr = 0X%x\n",
598 le16_to_cpu(out_cmd->hdr.sequence));
599 IWL_DEBUG_TX(priv, "tx_flags = 0X%x\n", le32_to_cpu(tx_cmd->tx_flags));
600 iwl_print_hex_dump(priv, IWL_DL_TX, tx_cmd, sizeof(*tx_cmd));
601 iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx_cmd->hdr,
602 ieee80211_hdrlen(fc));
603
604 /*
605 * Use the first empty entry in this queue's command buffer array
606 * to contain the Tx command and MAC header concatenated together
607 * (payload data will be in another buffer).
608 * Size of this varies, due to varying MAC header length.
609 * If end is not dword aligned, we'll have 2 extra bytes at the end
610 * of the MAC header (device reads on dword boundaries).
611 * We'll tell device about this padding later.
612 */
613 len = sizeof(struct iwl3945_tx_cmd) +
614 sizeof(struct iwl_cmd_header) + hdr_len;
615 len = (len + 3) & ~3;
616
617 /* Physical address of this Tx command's header (not MAC header!),
618 * within command buffer array. */
619 txcmd_phys = pci_map_single(priv->pci_dev, &out_cmd->hdr,
620 len, PCI_DMA_TODEVICE);
621 /* we do not map meta data ... so we can safely access address to
622 * provide to unmap command*/
623 dma_unmap_addr_set(out_meta, mapping, txcmd_phys);
624 dma_unmap_len_set(out_meta, len, len);
625
626 /* Add buffer containing Tx command and MAC(!) header to TFD's
627 * first entry */
628 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
629 txcmd_phys, len, 1, 0);
630
631
632 /* Set up TFD's 2nd entry to point directly to remainder of skb,
633 * if any (802.11 null frames have no payload). */
634 len = skb->len - hdr_len;
635 if (len) {
636 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
637 len, PCI_DMA_TODEVICE);
638 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
639 phys_addr, len,
640 0, U32_PAD(len));
641 }
642
643
644 /* Tell device the write index *just past* this latest filled TFD */
645 q->write_ptr = iwl_legacy_queue_inc_wrap(q->write_ptr, q->n_bd);
646 iwl_legacy_txq_update_write_ptr(priv, txq);
647 spin_unlock_irqrestore(&priv->lock, flags);
648
649 if ((iwl_legacy_queue_space(q) < q->high_mark)
650 && priv->mac80211_registered) {
651 if (wait_write_ptr) {
652 spin_lock_irqsave(&priv->lock, flags);
653 txq->need_update = 1;
654 iwl_legacy_txq_update_write_ptr(priv, txq);
655 spin_unlock_irqrestore(&priv->lock, flags);
656 }
657
658 iwl_legacy_stop_queue(priv, txq);
659 }
660
661 return 0;
662
663 drop_unlock:
664 spin_unlock_irqrestore(&priv->lock, flags);
665 drop:
666 return -1;
667 }
668
669 static int iwl3945_get_measurement(struct iwl_priv *priv,
670 struct ieee80211_measurement_params *params,
671 u8 type)
672 {
673 struct iwl_spectrum_cmd spectrum;
674 struct iwl_rx_packet *pkt;
675 struct iwl_host_cmd cmd = {
676 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
677 .data = (void *)&spectrum,
678 .flags = CMD_WANT_SKB,
679 };
680 u32 add_time = le64_to_cpu(params->start_time);
681 int rc;
682 int spectrum_resp_status;
683 int duration = le16_to_cpu(params->duration);
684 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
685
686 if (iwl_legacy_is_associated(priv, IWL_RXON_CTX_BSS))
687 add_time = iwl_legacy_usecs_to_beacons(priv,
688 le64_to_cpu(params->start_time) - priv->_3945.last_tsf,
689 le16_to_cpu(ctx->timing.beacon_interval));
690
691 memset(&spectrum, 0, sizeof(spectrum));
692
693 spectrum.channel_count = cpu_to_le16(1);
694 spectrum.flags =
695 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
696 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
697 cmd.len = sizeof(spectrum);
698 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
699
700 if (iwl_legacy_is_associated(priv, IWL_RXON_CTX_BSS))
701 spectrum.start_time =
702 iwl_legacy_add_beacon_time(priv,
703 priv->_3945.last_beacon_time, add_time,
704 le16_to_cpu(ctx->timing.beacon_interval));
705 else
706 spectrum.start_time = 0;
707
708 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
709 spectrum.channels[0].channel = params->channel;
710 spectrum.channels[0].type = type;
711 if (ctx->active.flags & RXON_FLG_BAND_24G_MSK)
712 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
713 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
714
715 rc = iwl_legacy_send_cmd_sync(priv, &cmd);
716 if (rc)
717 return rc;
718
719 pkt = (struct iwl_rx_packet *)cmd.reply_page;
720 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
721 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
722 rc = -EIO;
723 }
724
725 spectrum_resp_status = le16_to_cpu(pkt->u.spectrum.status);
726 switch (spectrum_resp_status) {
727 case 0: /* Command will be handled */
728 if (pkt->u.spectrum.id != 0xff) {
729 IWL_DEBUG_INFO(priv, "Replaced existing measurement: %d\n",
730 pkt->u.spectrum.id);
731 priv->measurement_status &= ~MEASUREMENT_READY;
732 }
733 priv->measurement_status |= MEASUREMENT_ACTIVE;
734 rc = 0;
735 break;
736
737 case 1: /* Command will not be handled */
738 rc = -EAGAIN;
739 break;
740 }
741
742 iwl_legacy_free_pages(priv, cmd.reply_page);
743
744 return rc;
745 }
746
747 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
748 struct iwl_rx_mem_buffer *rxb)
749 {
750 struct iwl_rx_packet *pkt = rxb_addr(rxb);
751 struct iwl_alive_resp *palive;
752 struct delayed_work *pwork;
753
754 palive = &pkt->u.alive_frame;
755
756 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
757 "0x%01X 0x%01X\n",
758 palive->is_valid, palive->ver_type,
759 palive->ver_subtype);
760
761 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
762 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
763 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
764 sizeof(struct iwl_alive_resp));
765 pwork = &priv->init_alive_start;
766 } else {
767 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
768 memcpy(&priv->card_alive, &pkt->u.alive_frame,
769 sizeof(struct iwl_alive_resp));
770 pwork = &priv->alive_start;
771 iwl3945_disable_events(priv);
772 }
773
774 /* We delay the ALIVE response by 5ms to
775 * give the HW RF Kill time to activate... */
776 if (palive->is_valid == UCODE_VALID_OK)
777 queue_delayed_work(priv->workqueue, pwork,
778 msecs_to_jiffies(5));
779 else
780 IWL_WARN(priv, "uCode did not respond OK.\n");
781 }
782
783 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
784 struct iwl_rx_mem_buffer *rxb)
785 {
786 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
787 struct iwl_rx_packet *pkt = rxb_addr(rxb);
788 #endif
789
790 IWL_DEBUG_RX(priv, "Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
791 }
792
793 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
794 struct iwl_rx_mem_buffer *rxb)
795 {
796 struct iwl_rx_packet *pkt = rxb_addr(rxb);
797 struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
798 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
799 u8 rate = beacon->beacon_notify_hdr.rate;
800
801 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
802 "tsf %d %d rate %d\n",
803 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
804 beacon->beacon_notify_hdr.failure_frame,
805 le32_to_cpu(beacon->ibss_mgr_status),
806 le32_to_cpu(beacon->high_tsf),
807 le32_to_cpu(beacon->low_tsf), rate);
808 #endif
809
810 priv->ibss_manager = le32_to_cpu(beacon->ibss_mgr_status);
811
812 }
813
814 /* Handle notification from uCode that card's power state is changing
815 * due to software, hardware, or critical temperature RFKILL */
816 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
817 struct iwl_rx_mem_buffer *rxb)
818 {
819 struct iwl_rx_packet *pkt = rxb_addr(rxb);
820 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
821 unsigned long status = priv->status;
822
823 IWL_WARN(priv, "Card state received: HW:%s SW:%s\n",
824 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
825 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
826
827 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
828 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
829
830 if (flags & HW_CARD_DISABLED)
831 set_bit(STATUS_RF_KILL_HW, &priv->status);
832 else
833 clear_bit(STATUS_RF_KILL_HW, &priv->status);
834
835
836 iwl_legacy_scan_cancel(priv);
837
838 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
839 test_bit(STATUS_RF_KILL_HW, &priv->status)))
840 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
841 test_bit(STATUS_RF_KILL_HW, &priv->status));
842 else
843 wake_up_interruptible(&priv->wait_command_queue);
844 }
845
846 /**
847 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
848 *
849 * Setup the RX handlers for each of the reply types sent from the uCode
850 * to the host.
851 *
852 * This function chains into the hardware specific files for them to setup
853 * any hardware specific handlers as well.
854 */
855 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
856 {
857 priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
858 priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
859 priv->rx_handlers[REPLY_ERROR] = iwl_legacy_rx_reply_error;
860 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_legacy_rx_csa;
861 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
862 iwl_legacy_rx_spectrum_measure_notif;
863 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_legacy_rx_pm_sleep_notif;
864 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
865 iwl_legacy_rx_pm_debug_statistics_notif;
866 priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
867
868 /*
869 * The same handler is used for both the REPLY to a discrete
870 * statistics request from the host as well as for the periodic
871 * statistics notifications (after received beacons) from the uCode.
872 */
873 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_reply_statistics;
874 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
875
876 iwl_legacy_setup_rx_scan_handlers(priv);
877 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
878
879 /* Set up hardware specific Rx handlers */
880 iwl3945_hw_rx_handler_setup(priv);
881 }
882
883 /************************** RX-FUNCTIONS ****************************/
884 /*
885 * Rx theory of operation
886 *
887 * The host allocates 32 DMA target addresses and passes the host address
888 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
889 * 0 to 31
890 *
891 * Rx Queue Indexes
892 * The host/firmware share two index registers for managing the Rx buffers.
893 *
894 * The READ index maps to the first position that the firmware may be writing
895 * to -- the driver can read up to (but not including) this position and get
896 * good data.
897 * The READ index is managed by the firmware once the card is enabled.
898 *
899 * The WRITE index maps to the last position the driver has read from -- the
900 * position preceding WRITE is the last slot the firmware can place a packet.
901 *
902 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
903 * WRITE = READ.
904 *
905 * During initialization, the host sets up the READ queue position to the first
906 * INDEX position, and WRITE to the last (READ - 1 wrapped)
907 *
908 * When the firmware places a packet in a buffer, it will advance the READ index
909 * and fire the RX interrupt. The driver can then query the READ index and
910 * process as many packets as possible, moving the WRITE index forward as it
911 * resets the Rx queue buffers with new memory.
912 *
913 * The management in the driver is as follows:
914 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
915 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
916 * to replenish the iwl->rxq->rx_free.
917 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
918 * iwl->rxq is replenished and the READ INDEX is updated (updating the
919 * 'processed' and 'read' driver indexes as well)
920 * + A received packet is processed and handed to the kernel network stack,
921 * detached from the iwl->rxq. The driver 'processed' index is updated.
922 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
923 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
924 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
925 * were enough free buffers and RX_STALLED is set it is cleared.
926 *
927 *
928 * Driver sequence:
929 *
930 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
931 * iwl3945_rx_queue_restock
932 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
933 * queue, updates firmware pointers, and updates
934 * the WRITE index. If insufficient rx_free buffers
935 * are available, schedules iwl3945_rx_replenish
936 *
937 * -- enable interrupts --
938 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
939 * READ INDEX, detaching the SKB from the pool.
940 * Moves the packet buffer from queue to rx_used.
941 * Calls iwl3945_rx_queue_restock to refill any empty
942 * slots.
943 * ...
944 *
945 */
946
947 /**
948 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
949 */
950 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
951 dma_addr_t dma_addr)
952 {
953 return cpu_to_le32((u32)dma_addr);
954 }
955
956 /**
957 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
958 *
959 * If there are slots in the RX queue that need to be restocked,
960 * and we have free pre-allocated buffers, fill the ranks as much
961 * as we can, pulling from rx_free.
962 *
963 * This moves the 'write' index forward to catch up with 'processed', and
964 * also updates the memory address in the firmware to reference the new
965 * target buffer.
966 */
967 static void iwl3945_rx_queue_restock(struct iwl_priv *priv)
968 {
969 struct iwl_rx_queue *rxq = &priv->rxq;
970 struct list_head *element;
971 struct iwl_rx_mem_buffer *rxb;
972 unsigned long flags;
973 int write;
974
975 spin_lock_irqsave(&rxq->lock, flags);
976 write = rxq->write & ~0x7;
977 while ((iwl_legacy_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
978 /* Get next free Rx buffer, remove from free list */
979 element = rxq->rx_free.next;
980 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
981 list_del(element);
982
983 /* Point to Rx buffer via next RBD in circular buffer */
984 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->page_dma);
985 rxq->queue[rxq->write] = rxb;
986 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
987 rxq->free_count--;
988 }
989 spin_unlock_irqrestore(&rxq->lock, flags);
990 /* If the pre-allocated buffer pool is dropping low, schedule to
991 * refill it */
992 if (rxq->free_count <= RX_LOW_WATERMARK)
993 queue_work(priv->workqueue, &priv->rx_replenish);
994
995
996 /* If we've added more space for the firmware to place data, tell it.
997 * Increment device's write pointer in multiples of 8. */
998 if ((rxq->write_actual != (rxq->write & ~0x7))
999 || (abs(rxq->write - rxq->read) > 7)) {
1000 spin_lock_irqsave(&rxq->lock, flags);
1001 rxq->need_update = 1;
1002 spin_unlock_irqrestore(&rxq->lock, flags);
1003 iwl_legacy_rx_queue_update_write_ptr(priv, rxq);
1004 }
1005 }
1006
1007 /**
1008 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1009 *
1010 * When moving to rx_free an SKB is allocated for the slot.
1011 *
1012 * Also restock the Rx queue via iwl3945_rx_queue_restock.
1013 * This is called as a scheduled work item (except for during initialization)
1014 */
1015 static void iwl3945_rx_allocate(struct iwl_priv *priv, gfp_t priority)
1016 {
1017 struct iwl_rx_queue *rxq = &priv->rxq;
1018 struct list_head *element;
1019 struct iwl_rx_mem_buffer *rxb;
1020 struct page *page;
1021 unsigned long flags;
1022 gfp_t gfp_mask = priority;
1023
1024 while (1) {
1025 spin_lock_irqsave(&rxq->lock, flags);
1026
1027 if (list_empty(&rxq->rx_used)) {
1028 spin_unlock_irqrestore(&rxq->lock, flags);
1029 return;
1030 }
1031 spin_unlock_irqrestore(&rxq->lock, flags);
1032
1033 if (rxq->free_count > RX_LOW_WATERMARK)
1034 gfp_mask |= __GFP_NOWARN;
1035
1036 if (priv->hw_params.rx_page_order > 0)
1037 gfp_mask |= __GFP_COMP;
1038
1039 /* Alloc a new receive buffer */
1040 page = alloc_pages(gfp_mask, priv->hw_params.rx_page_order);
1041 if (!page) {
1042 if (net_ratelimit())
1043 IWL_DEBUG_INFO(priv, "Failed to allocate SKB buffer.\n");
1044 if ((rxq->free_count <= RX_LOW_WATERMARK) &&
1045 net_ratelimit())
1046 IWL_CRIT(priv, "Failed to allocate SKB buffer with %s. Only %u free buffers remaining.\n",
1047 priority == GFP_ATOMIC ? "GFP_ATOMIC" : "GFP_KERNEL",
1048 rxq->free_count);
1049 /* We don't reschedule replenish work here -- we will
1050 * call the restock method and if it still needs
1051 * more buffers it will schedule replenish */
1052 break;
1053 }
1054
1055 spin_lock_irqsave(&rxq->lock, flags);
1056 if (list_empty(&rxq->rx_used)) {
1057 spin_unlock_irqrestore(&rxq->lock, flags);
1058 __free_pages(page, priv->hw_params.rx_page_order);
1059 return;
1060 }
1061 element = rxq->rx_used.next;
1062 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1063 list_del(element);
1064 spin_unlock_irqrestore(&rxq->lock, flags);
1065
1066 rxb->page = page;
1067 /* Get physical address of RB/SKB */
1068 rxb->page_dma = pci_map_page(priv->pci_dev, page, 0,
1069 PAGE_SIZE << priv->hw_params.rx_page_order,
1070 PCI_DMA_FROMDEVICE);
1071
1072 spin_lock_irqsave(&rxq->lock, flags);
1073
1074 list_add_tail(&rxb->list, &rxq->rx_free);
1075 rxq->free_count++;
1076 priv->alloc_rxb_page++;
1077
1078 spin_unlock_irqrestore(&rxq->lock, flags);
1079 }
1080 }
1081
1082 void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1083 {
1084 unsigned long flags;
1085 int i;
1086 spin_lock_irqsave(&rxq->lock, flags);
1087 INIT_LIST_HEAD(&rxq->rx_free);
1088 INIT_LIST_HEAD(&rxq->rx_used);
1089 /* Fill the rx_used queue with _all_ of the Rx buffers */
1090 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
1091 /* In the reset function, these buffers may have been allocated
1092 * to an SKB, so we need to unmap and free potential storage */
1093 if (rxq->pool[i].page != NULL) {
1094 pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
1095 PAGE_SIZE << priv->hw_params.rx_page_order,
1096 PCI_DMA_FROMDEVICE);
1097 __iwl_legacy_free_pages(priv, rxq->pool[i].page);
1098 rxq->pool[i].page = NULL;
1099 }
1100 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
1101 }
1102
1103 /* Set us so that we have processed and used all buffers, but have
1104 * not restocked the Rx queue with fresh buffers */
1105 rxq->read = rxq->write = 0;
1106 rxq->write_actual = 0;
1107 rxq->free_count = 0;
1108 spin_unlock_irqrestore(&rxq->lock, flags);
1109 }
1110
1111 void iwl3945_rx_replenish(void *data)
1112 {
1113 struct iwl_priv *priv = data;
1114 unsigned long flags;
1115
1116 iwl3945_rx_allocate(priv, GFP_KERNEL);
1117
1118 spin_lock_irqsave(&priv->lock, flags);
1119 iwl3945_rx_queue_restock(priv);
1120 spin_unlock_irqrestore(&priv->lock, flags);
1121 }
1122
1123 static void iwl3945_rx_replenish_now(struct iwl_priv *priv)
1124 {
1125 iwl3945_rx_allocate(priv, GFP_ATOMIC);
1126
1127 iwl3945_rx_queue_restock(priv);
1128 }
1129
1130
1131 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1132 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1133 * This free routine walks the list of POOL entries and if SKB is set to
1134 * non NULL it is unmapped and freed
1135 */
1136 static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1137 {
1138 int i;
1139 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
1140 if (rxq->pool[i].page != NULL) {
1141 pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
1142 PAGE_SIZE << priv->hw_params.rx_page_order,
1143 PCI_DMA_FROMDEVICE);
1144 __iwl_legacy_free_pages(priv, rxq->pool[i].page);
1145 rxq->pool[i].page = NULL;
1146 }
1147 }
1148
1149 dma_free_coherent(&priv->pci_dev->dev, 4 * RX_QUEUE_SIZE, rxq->bd,
1150 rxq->bd_dma);
1151 dma_free_coherent(&priv->pci_dev->dev, sizeof(struct iwl_rb_status),
1152 rxq->rb_stts, rxq->rb_stts_dma);
1153 rxq->bd = NULL;
1154 rxq->rb_stts = NULL;
1155 }
1156
1157
1158 /* Convert linear signal-to-noise ratio into dB */
1159 static u8 ratio2dB[100] = {
1160 /* 0 1 2 3 4 5 6 7 8 9 */
1161 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1162 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1163 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1164 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1165 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1166 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1167 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1168 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1169 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1170 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1171 };
1172
1173 /* Calculates a relative dB value from a ratio of linear
1174 * (i.e. not dB) signal levels.
1175 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1176 int iwl3945_calc_db_from_ratio(int sig_ratio)
1177 {
1178 /* 1000:1 or higher just report as 60 dB */
1179 if (sig_ratio >= 1000)
1180 return 60;
1181
1182 /* 100:1 or higher, divide by 10 and use table,
1183 * add 20 dB to make up for divide by 10 */
1184 if (sig_ratio >= 100)
1185 return 20 + (int)ratio2dB[sig_ratio/10];
1186
1187 /* We shouldn't see this */
1188 if (sig_ratio < 1)
1189 return 0;
1190
1191 /* Use table for ratios 1:1 - 99:1 */
1192 return (int)ratio2dB[sig_ratio];
1193 }
1194
1195 /**
1196 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1197 *
1198 * Uses the priv->rx_handlers callback function array to invoke
1199 * the appropriate handlers, including command responses,
1200 * frame-received notifications, and other notifications.
1201 */
1202 static void iwl3945_rx_handle(struct iwl_priv *priv)
1203 {
1204 struct iwl_rx_mem_buffer *rxb;
1205 struct iwl_rx_packet *pkt;
1206 struct iwl_rx_queue *rxq = &priv->rxq;
1207 u32 r, i;
1208 int reclaim;
1209 unsigned long flags;
1210 u8 fill_rx = 0;
1211 u32 count = 8;
1212 int total_empty = 0;
1213
1214 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1215 * buffer that the driver may process (last buffer filled by ucode). */
1216 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
1217 i = rxq->read;
1218
1219 /* calculate total frames need to be restock after handling RX */
1220 total_empty = r - rxq->write_actual;
1221 if (total_empty < 0)
1222 total_empty += RX_QUEUE_SIZE;
1223
1224 if (total_empty > (RX_QUEUE_SIZE / 2))
1225 fill_rx = 1;
1226 /* Rx interrupt, but nothing sent from uCode */
1227 if (i == r)
1228 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
1229
1230 while (i != r) {
1231 int len;
1232
1233 rxb = rxq->queue[i];
1234
1235 /* If an RXB doesn't have a Rx queue slot associated with it,
1236 * then a bug has been introduced in the queue refilling
1237 * routines -- catch it here */
1238 BUG_ON(rxb == NULL);
1239
1240 rxq->queue[i] = NULL;
1241
1242 pci_unmap_page(priv->pci_dev, rxb->page_dma,
1243 PAGE_SIZE << priv->hw_params.rx_page_order,
1244 PCI_DMA_FROMDEVICE);
1245 pkt = rxb_addr(rxb);
1246
1247 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
1248 len += sizeof(u32); /* account for status word */
1249 trace_iwlwifi_legacy_dev_rx(priv, pkt, len);
1250
1251 /* Reclaim a command buffer only if this packet is a response
1252 * to a (driver-originated) command.
1253 * If the packet (e.g. Rx frame) originated from uCode,
1254 * there is no command buffer to reclaim.
1255 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1256 * but apparently a few don't get set; catch them here. */
1257 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1258 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1259 (pkt->hdr.cmd != REPLY_TX);
1260
1261 /* Based on type of command response or notification,
1262 * handle those that need handling via function in
1263 * rx_handlers table. See iwl3945_setup_rx_handlers() */
1264 if (priv->rx_handlers[pkt->hdr.cmd]) {
1265 IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r, i,
1266 iwl_legacy_get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1267 priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
1268 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1269 } else {
1270 /* No handling needed */
1271 IWL_DEBUG_RX(priv,
1272 "r %d i %d No handler needed for %s, 0x%02x\n",
1273 r, i, iwl_legacy_get_cmd_string(pkt->hdr.cmd),
1274 pkt->hdr.cmd);
1275 }
1276
1277 /*
1278 * XXX: After here, we should always check rxb->page
1279 * against NULL before touching it or its virtual
1280 * memory (pkt). Because some rx_handler might have
1281 * already taken or freed the pages.
1282 */
1283
1284 if (reclaim) {
1285 /* Invoke any callbacks, transfer the buffer to caller,
1286 * and fire off the (possibly) blocking iwl_legacy_send_cmd()
1287 * as we reclaim the driver command queue */
1288 if (rxb->page)
1289 iwl_legacy_tx_cmd_complete(priv, rxb);
1290 else
1291 IWL_WARN(priv, "Claim null rxb?\n");
1292 }
1293
1294 /* Reuse the page if possible. For notification packets and
1295 * SKBs that fail to Rx correctly, add them back into the
1296 * rx_free list for reuse later. */
1297 spin_lock_irqsave(&rxq->lock, flags);
1298 if (rxb->page != NULL) {
1299 rxb->page_dma = pci_map_page(priv->pci_dev, rxb->page,
1300 0, PAGE_SIZE << priv->hw_params.rx_page_order,
1301 PCI_DMA_FROMDEVICE);
1302 list_add_tail(&rxb->list, &rxq->rx_free);
1303 rxq->free_count++;
1304 } else
1305 list_add_tail(&rxb->list, &rxq->rx_used);
1306
1307 spin_unlock_irqrestore(&rxq->lock, flags);
1308
1309 i = (i + 1) & RX_QUEUE_MASK;
1310 /* If there are a lot of unused frames,
1311 * restock the Rx queue so ucode won't assert. */
1312 if (fill_rx) {
1313 count++;
1314 if (count >= 8) {
1315 rxq->read = i;
1316 iwl3945_rx_replenish_now(priv);
1317 count = 0;
1318 }
1319 }
1320 }
1321
1322 /* Backtrack one entry */
1323 rxq->read = i;
1324 if (fill_rx)
1325 iwl3945_rx_replenish_now(priv);
1326 else
1327 iwl3945_rx_queue_restock(priv);
1328 }
1329
1330 /* call this function to flush any scheduled tasklet */
1331 static inline void iwl3945_synchronize_irq(struct iwl_priv *priv)
1332 {
1333 /* wait to make sure we flush pending tasklet*/
1334 synchronize_irq(priv->pci_dev->irq);
1335 tasklet_kill(&priv->irq_tasklet);
1336 }
1337
1338 static const char *iwl3945_desc_lookup(int i)
1339 {
1340 switch (i) {
1341 case 1:
1342 return "FAIL";
1343 case 2:
1344 return "BAD_PARAM";
1345 case 3:
1346 return "BAD_CHECKSUM";
1347 case 4:
1348 return "NMI_INTERRUPT";
1349 case 5:
1350 return "SYSASSERT";
1351 case 6:
1352 return "FATAL_ERROR";
1353 }
1354
1355 return "UNKNOWN";
1356 }
1357
1358 #define ERROR_START_OFFSET (1 * sizeof(u32))
1359 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1360
1361 void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
1362 {
1363 u32 i;
1364 u32 desc, time, count, base, data1;
1365 u32 blink1, blink2, ilink1, ilink2;
1366
1367 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1368
1369 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1370 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1371 return;
1372 }
1373
1374
1375 count = iwl_legacy_read_targ_mem(priv, base);
1376
1377 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1378 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1379 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1380 priv->status, count);
1381 }
1382
1383 IWL_ERR(priv, "Desc Time asrtPC blink2 "
1384 "ilink1 nmiPC Line\n");
1385 for (i = ERROR_START_OFFSET;
1386 i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
1387 i += ERROR_ELEM_SIZE) {
1388 desc = iwl_legacy_read_targ_mem(priv, base + i);
1389 time =
1390 iwl_legacy_read_targ_mem(priv, base + i + 1 * sizeof(u32));
1391 blink1 =
1392 iwl_legacy_read_targ_mem(priv, base + i + 2 * sizeof(u32));
1393 blink2 =
1394 iwl_legacy_read_targ_mem(priv, base + i + 3 * sizeof(u32));
1395 ilink1 =
1396 iwl_legacy_read_targ_mem(priv, base + i + 4 * sizeof(u32));
1397 ilink2 =
1398 iwl_legacy_read_targ_mem(priv, base + i + 5 * sizeof(u32));
1399 data1 =
1400 iwl_legacy_read_targ_mem(priv, base + i + 6 * sizeof(u32));
1401
1402 IWL_ERR(priv,
1403 "%-13s (0x%X) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1404 iwl3945_desc_lookup(desc), desc, time, blink1, blink2,
1405 ilink1, ilink2, data1);
1406 trace_iwlwifi_legacy_dev_ucode_error(priv, desc, time, data1, 0,
1407 0, blink1, blink2, ilink1, ilink2);
1408 }
1409 }
1410
1411 #define EVENT_START_OFFSET (6 * sizeof(u32))
1412
1413 /**
1414 * iwl3945_print_event_log - Dump error event log to syslog
1415 *
1416 */
1417 static int iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
1418 u32 num_events, u32 mode,
1419 int pos, char **buf, size_t bufsz)
1420 {
1421 u32 i;
1422 u32 base; /* SRAM byte address of event log header */
1423 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1424 u32 ptr; /* SRAM byte address of log data */
1425 u32 ev, time, data; /* event log data */
1426 unsigned long reg_flags;
1427
1428 if (num_events == 0)
1429 return pos;
1430
1431 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1432
1433 if (mode == 0)
1434 event_size = 2 * sizeof(u32);
1435 else
1436 event_size = 3 * sizeof(u32);
1437
1438 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1439
1440 /* Make sure device is powered up for SRAM reads */
1441 spin_lock_irqsave(&priv->reg_lock, reg_flags);
1442 iwl_grab_nic_access(priv);
1443
1444 /* Set starting address; reads will auto-increment */
1445 _iwl_legacy_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
1446 rmb();
1447
1448 /* "time" is actually "data" for mode 0 (no timestamp).
1449 * place event id # at far right for easier visual parsing. */
1450 for (i = 0; i < num_events; i++) {
1451 ev = _iwl_legacy_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1452 time = _iwl_legacy_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1453 if (mode == 0) {
1454 /* data, ev */
1455 if (bufsz) {
1456 pos += scnprintf(*buf + pos, bufsz - pos,
1457 "0x%08x:%04u\n",
1458 time, ev);
1459 } else {
1460 IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
1461 trace_iwlwifi_legacy_dev_ucode_event(priv, 0,
1462 time, ev);
1463 }
1464 } else {
1465 data = _iwl_legacy_read_direct32(priv,
1466 HBUS_TARG_MEM_RDAT);
1467 if (bufsz) {
1468 pos += scnprintf(*buf + pos, bufsz - pos,
1469 "%010u:0x%08x:%04u\n",
1470 time, data, ev);
1471 } else {
1472 IWL_ERR(priv, "%010u\t0x%08x\t%04u\n",
1473 time, data, ev);
1474 trace_iwlwifi_legacy_dev_ucode_event(priv, time,
1475 data, ev);
1476 }
1477 }
1478 }
1479
1480 /* Allow device to power down */
1481 iwl_release_nic_access(priv);
1482 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
1483 return pos;
1484 }
1485
1486 /**
1487 * iwl3945_print_last_event_logs - Dump the newest # of event log to syslog
1488 */
1489 static int iwl3945_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1490 u32 num_wraps, u32 next_entry,
1491 u32 size, u32 mode,
1492 int pos, char **buf, size_t bufsz)
1493 {
1494 /*
1495 * display the newest DEFAULT_LOG_ENTRIES entries
1496 * i.e the entries just before the next ont that uCode would fill.
1497 */
1498 if (num_wraps) {
1499 if (next_entry < size) {
1500 pos = iwl3945_print_event_log(priv,
1501 capacity - (size - next_entry),
1502 size - next_entry, mode,
1503 pos, buf, bufsz);
1504 pos = iwl3945_print_event_log(priv, 0,
1505 next_entry, mode,
1506 pos, buf, bufsz);
1507 } else
1508 pos = iwl3945_print_event_log(priv, next_entry - size,
1509 size, mode,
1510 pos, buf, bufsz);
1511 } else {
1512 if (next_entry < size)
1513 pos = iwl3945_print_event_log(priv, 0,
1514 next_entry, mode,
1515 pos, buf, bufsz);
1516 else
1517 pos = iwl3945_print_event_log(priv, next_entry - size,
1518 size, mode,
1519 pos, buf, bufsz);
1520 }
1521 return pos;
1522 }
1523
1524 #define DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES (20)
1525
1526 int iwl3945_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1527 char **buf, bool display)
1528 {
1529 u32 base; /* SRAM byte address of event log header */
1530 u32 capacity; /* event log capacity in # entries */
1531 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1532 u32 num_wraps; /* # times uCode wrapped to top of log */
1533 u32 next_entry; /* index of next entry to be written by uCode */
1534 u32 size; /* # entries that we'll print */
1535 int pos = 0;
1536 size_t bufsz = 0;
1537
1538 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1539 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1540 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1541 return -EINVAL;
1542 }
1543
1544 /* event log header */
1545 capacity = iwl_legacy_read_targ_mem(priv, base);
1546 mode = iwl_legacy_read_targ_mem(priv, base + (1 * sizeof(u32)));
1547 num_wraps = iwl_legacy_read_targ_mem(priv, base + (2 * sizeof(u32)));
1548 next_entry = iwl_legacy_read_targ_mem(priv, base + (3 * sizeof(u32)));
1549
1550 if (capacity > priv->cfg->base_params->max_event_log_size) {
1551 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
1552 capacity, priv->cfg->base_params->max_event_log_size);
1553 capacity = priv->cfg->base_params->max_event_log_size;
1554 }
1555
1556 if (next_entry > priv->cfg->base_params->max_event_log_size) {
1557 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1558 next_entry, priv->cfg->base_params->max_event_log_size);
1559 next_entry = priv->cfg->base_params->max_event_log_size;
1560 }
1561
1562 size = num_wraps ? capacity : next_entry;
1563
1564 /* bail out if nothing in log */
1565 if (size == 0) {
1566 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1567 return pos;
1568 }
1569
1570 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
1571 if (!(iwl_legacy_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log)
1572 size = (size > DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES)
1573 ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES : size;
1574 #else
1575 size = (size > DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES)
1576 ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES : size;
1577 #endif
1578
1579 IWL_ERR(priv, "Start IWL Event Log Dump: display last %d count\n",
1580 size);
1581
1582 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
1583 if (display) {
1584 if (full_log)
1585 bufsz = capacity * 48;
1586 else
1587 bufsz = size * 48;
1588 *buf = kmalloc(bufsz, GFP_KERNEL);
1589 if (!*buf)
1590 return -ENOMEM;
1591 }
1592 if ((iwl_legacy_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
1593 /* if uCode has wrapped back to top of log,
1594 * start at the oldest entry,
1595 * i.e the next one that uCode would fill.
1596 */
1597 if (num_wraps)
1598 pos = iwl3945_print_event_log(priv, next_entry,
1599 capacity - next_entry, mode,
1600 pos, buf, bufsz);
1601
1602 /* (then/else) start at top of log */
1603 pos = iwl3945_print_event_log(priv, 0, next_entry, mode,
1604 pos, buf, bufsz);
1605 } else
1606 pos = iwl3945_print_last_event_logs(priv, capacity, num_wraps,
1607 next_entry, size, mode,
1608 pos, buf, bufsz);
1609 #else
1610 pos = iwl3945_print_last_event_logs(priv, capacity, num_wraps,
1611 next_entry, size, mode,
1612 pos, buf, bufsz);
1613 #endif
1614 return pos;
1615 }
1616
1617 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
1618 {
1619 u32 inta, handled = 0;
1620 u32 inta_fh;
1621 unsigned long flags;
1622 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
1623 u32 inta_mask;
1624 #endif
1625
1626 spin_lock_irqsave(&priv->lock, flags);
1627
1628 /* Ack/clear/reset pending uCode interrupts.
1629 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1630 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1631 inta = iwl_read32(priv, CSR_INT);
1632 iwl_write32(priv, CSR_INT, inta);
1633
1634 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1635 * Any new interrupts that happen after this, either while we're
1636 * in this tasklet, or later, will show up in next ISR/tasklet. */
1637 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1638 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1639
1640 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
1641 if (iwl_legacy_get_debug_level(priv) & IWL_DL_ISR) {
1642 /* just for debug */
1643 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1644 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1645 inta, inta_mask, inta_fh);
1646 }
1647 #endif
1648
1649 spin_unlock_irqrestore(&priv->lock, flags);
1650
1651 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1652 * atomic, make sure that inta covers all the interrupts that
1653 * we've discovered, even if FH interrupt came in just after
1654 * reading CSR_INT. */
1655 if (inta_fh & CSR39_FH_INT_RX_MASK)
1656 inta |= CSR_INT_BIT_FH_RX;
1657 if (inta_fh & CSR39_FH_INT_TX_MASK)
1658 inta |= CSR_INT_BIT_FH_TX;
1659
1660 /* Now service all interrupt bits discovered above. */
1661 if (inta & CSR_INT_BIT_HW_ERR) {
1662 IWL_ERR(priv, "Hardware error detected. Restarting.\n");
1663
1664 /* Tell the device to stop sending interrupts */
1665 iwl_legacy_disable_interrupts(priv);
1666
1667 priv->isr_stats.hw++;
1668 iwl_legacy_irq_handle_error(priv);
1669
1670 handled |= CSR_INT_BIT_HW_ERR;
1671
1672 return;
1673 }
1674
1675 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
1676 if (iwl_legacy_get_debug_level(priv) & (IWL_DL_ISR)) {
1677 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1678 if (inta & CSR_INT_BIT_SCD) {
1679 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1680 "the frame/frames.\n");
1681 priv->isr_stats.sch++;
1682 }
1683
1684 /* Alive notification via Rx interrupt will do the real work */
1685 if (inta & CSR_INT_BIT_ALIVE) {
1686 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1687 priv->isr_stats.alive++;
1688 }
1689 }
1690 #endif
1691 /* Safely ignore these bits for debug checks below */
1692 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1693
1694 /* Error detected by uCode */
1695 if (inta & CSR_INT_BIT_SW_ERR) {
1696 IWL_ERR(priv, "Microcode SW error detected. "
1697 "Restarting 0x%X.\n", inta);
1698 priv->isr_stats.sw++;
1699 iwl_legacy_irq_handle_error(priv);
1700 handled |= CSR_INT_BIT_SW_ERR;
1701 }
1702
1703 /* uCode wakes up after power-down sleep */
1704 if (inta & CSR_INT_BIT_WAKEUP) {
1705 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1706 iwl_legacy_rx_queue_update_write_ptr(priv, &priv->rxq);
1707 iwl_legacy_txq_update_write_ptr(priv, &priv->txq[0]);
1708 iwl_legacy_txq_update_write_ptr(priv, &priv->txq[1]);
1709 iwl_legacy_txq_update_write_ptr(priv, &priv->txq[2]);
1710 iwl_legacy_txq_update_write_ptr(priv, &priv->txq[3]);
1711 iwl_legacy_txq_update_write_ptr(priv, &priv->txq[4]);
1712 iwl_legacy_txq_update_write_ptr(priv, &priv->txq[5]);
1713
1714 priv->isr_stats.wakeup++;
1715 handled |= CSR_INT_BIT_WAKEUP;
1716 }
1717
1718 /* All uCode command responses, including Tx command responses,
1719 * Rx "responses" (frame-received notification), and other
1720 * notifications from uCode come through here*/
1721 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1722 iwl3945_rx_handle(priv);
1723 priv->isr_stats.rx++;
1724 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1725 }
1726
1727 if (inta & CSR_INT_BIT_FH_TX) {
1728 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1729 priv->isr_stats.tx++;
1730
1731 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
1732 iwl_legacy_write_direct32(priv, FH39_TCSR_CREDIT
1733 (FH39_SRVC_CHNL), 0x0);
1734 handled |= CSR_INT_BIT_FH_TX;
1735 }
1736
1737 if (inta & ~handled) {
1738 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1739 priv->isr_stats.unhandled++;
1740 }
1741
1742 if (inta & ~priv->inta_mask) {
1743 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1744 inta & ~priv->inta_mask);
1745 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
1746 }
1747
1748 /* Re-enable all interrupts */
1749 /* only Re-enable if disabled by irq */
1750 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1751 iwl_legacy_enable_interrupts(priv);
1752
1753 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
1754 if (iwl_legacy_get_debug_level(priv) & (IWL_DL_ISR)) {
1755 inta = iwl_read32(priv, CSR_INT);
1756 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1757 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1758 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1759 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1760 }
1761 #endif
1762 }
1763
1764 static int iwl3945_get_single_channel_for_scan(struct iwl_priv *priv,
1765 struct ieee80211_vif *vif,
1766 enum ieee80211_band band,
1767 struct iwl3945_scan_channel *scan_ch)
1768 {
1769 const struct ieee80211_supported_band *sband;
1770 u16 passive_dwell = 0;
1771 u16 active_dwell = 0;
1772 int added = 0;
1773 u8 channel = 0;
1774
1775 sband = iwl_get_hw_mode(priv, band);
1776 if (!sband) {
1777 IWL_ERR(priv, "invalid band\n");
1778 return added;
1779 }
1780
1781 active_dwell = iwl_legacy_get_active_dwell_time(priv, band, 0);
1782 passive_dwell = iwl_legacy_get_passive_dwell_time(priv, band, vif);
1783
1784 if (passive_dwell <= active_dwell)
1785 passive_dwell = active_dwell + 1;
1786
1787
1788 channel = iwl_legacy_get_single_channel_number(priv, band);
1789
1790 if (channel) {
1791 scan_ch->channel = channel;
1792 scan_ch->type = 0; /* passive */
1793 scan_ch->active_dwell = cpu_to_le16(active_dwell);
1794 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
1795 /* Set txpower levels to defaults */
1796 scan_ch->tpc.dsp_atten = 110;
1797 if (band == IEEE80211_BAND_5GHZ)
1798 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
1799 else
1800 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
1801 added++;
1802 } else
1803 IWL_ERR(priv, "no valid channel found\n");
1804 return added;
1805 }
1806
1807 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
1808 enum ieee80211_band band,
1809 u8 is_active, u8 n_probes,
1810 struct iwl3945_scan_channel *scan_ch,
1811 struct ieee80211_vif *vif)
1812 {
1813 struct ieee80211_channel *chan;
1814 const struct ieee80211_supported_band *sband;
1815 const struct iwl_channel_info *ch_info;
1816 u16 passive_dwell = 0;
1817 u16 active_dwell = 0;
1818 int added, i;
1819
1820 sband = iwl_get_hw_mode(priv, band);
1821 if (!sband)
1822 return 0;
1823
1824 active_dwell = iwl_legacy_get_active_dwell_time(priv, band, n_probes);
1825 passive_dwell = iwl_legacy_get_passive_dwell_time(priv, band, vif);
1826
1827 if (passive_dwell <= active_dwell)
1828 passive_dwell = active_dwell + 1;
1829
1830 for (i = 0, added = 0; i < priv->scan_request->n_channels; i++) {
1831 chan = priv->scan_request->channels[i];
1832
1833 if (chan->band != band)
1834 continue;
1835
1836 scan_ch->channel = chan->hw_value;
1837
1838 ch_info = iwl_legacy_get_channel_info(priv, band,
1839 scan_ch->channel);
1840 if (!iwl_legacy_is_channel_valid(ch_info)) {
1841 IWL_DEBUG_SCAN(priv,
1842 "Channel %d is INVALID for this band.\n",
1843 scan_ch->channel);
1844 continue;
1845 }
1846
1847 scan_ch->active_dwell = cpu_to_le16(active_dwell);
1848 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
1849 /* If passive , set up for auto-switch
1850 * and use long active_dwell time.
1851 */
1852 if (!is_active || iwl_legacy_is_channel_passive(ch_info) ||
1853 (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
1854 scan_ch->type = 0; /* passive */
1855 if (IWL_UCODE_API(priv->ucode_ver) == 1)
1856 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
1857 } else {
1858 scan_ch->type = 1; /* active */
1859 }
1860
1861 /* Set direct probe bits. These may be used both for active
1862 * scan channels (probes gets sent right away),
1863 * or for passive channels (probes get se sent only after
1864 * hearing clear Rx packet).*/
1865 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
1866 if (n_probes)
1867 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1868 } else {
1869 /* uCode v1 does not allow setting direct probe bits on
1870 * passive channel. */
1871 if ((scan_ch->type & 1) && n_probes)
1872 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1873 }
1874
1875 /* Set txpower levels to defaults */
1876 scan_ch->tpc.dsp_atten = 110;
1877 /* scan_pwr_info->tpc.dsp_atten; */
1878
1879 /*scan_pwr_info->tpc.tx_gain; */
1880 if (band == IEEE80211_BAND_5GHZ)
1881 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
1882 else {
1883 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
1884 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
1885 * power level:
1886 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
1887 */
1888 }
1889
1890 IWL_DEBUG_SCAN(priv, "Scanning %d [%s %d]\n",
1891 scan_ch->channel,
1892 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
1893 (scan_ch->type & 1) ?
1894 active_dwell : passive_dwell);
1895
1896 scan_ch++;
1897 added++;
1898 }
1899
1900 IWL_DEBUG_SCAN(priv, "total channels to scan %d\n", added);
1901 return added;
1902 }
1903
1904 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
1905 struct ieee80211_rate *rates)
1906 {
1907 int i;
1908
1909 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
1910 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
1911 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1912 rates[i].hw_value_short = i;
1913 rates[i].flags = 0;
1914 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
1915 /*
1916 * If CCK != 1M then set short preamble rate flag.
1917 */
1918 rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
1919 0 : IEEE80211_RATE_SHORT_PREAMBLE;
1920 }
1921 }
1922 }
1923
1924 /******************************************************************************
1925 *
1926 * uCode download functions
1927 *
1928 ******************************************************************************/
1929
1930 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
1931 {
1932 iwl_legacy_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1933 iwl_legacy_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1934 iwl_legacy_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1935 iwl_legacy_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1936 iwl_legacy_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1937 iwl_legacy_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1938 }
1939
1940 /**
1941 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
1942 * looking at all data.
1943 */
1944 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
1945 {
1946 u32 val;
1947 u32 save_len = len;
1948 int rc = 0;
1949 u32 errcnt;
1950
1951 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1952
1953 iwl_legacy_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1954 IWL39_RTC_INST_LOWER_BOUND);
1955
1956 errcnt = 0;
1957 for (; len > 0; len -= sizeof(u32), image++) {
1958 /* read data comes through single port, auto-incr addr */
1959 /* NOTE: Use the debugless read so we don't flood kernel log
1960 * if IWL_DL_IO is set */
1961 val = _iwl_legacy_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1962 if (val != le32_to_cpu(*image)) {
1963 IWL_ERR(priv, "uCode INST section is invalid at "
1964 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1965 save_len - len, val, le32_to_cpu(*image));
1966 rc = -EIO;
1967 errcnt++;
1968 if (errcnt >= 20)
1969 break;
1970 }
1971 }
1972
1973
1974 if (!errcnt)
1975 IWL_DEBUG_INFO(priv,
1976 "ucode image in INSTRUCTION memory is good\n");
1977
1978 return rc;
1979 }
1980
1981
1982 /**
1983 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
1984 * using sample data 100 bytes apart. If these sample points are good,
1985 * it's a pretty good bet that everything between them is good, too.
1986 */
1987 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
1988 {
1989 u32 val;
1990 int rc = 0;
1991 u32 errcnt = 0;
1992 u32 i;
1993
1994 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1995
1996 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
1997 /* read data comes through single port, auto-incr addr */
1998 /* NOTE: Use the debugless read so we don't flood kernel log
1999 * if IWL_DL_IO is set */
2000 iwl_legacy_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2001 i + IWL39_RTC_INST_LOWER_BOUND);
2002 val = _iwl_legacy_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2003 if (val != le32_to_cpu(*image)) {
2004 #if 0 /* Enable this if you want to see details */
2005 IWL_ERR(priv, "uCode INST section is invalid at "
2006 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2007 i, val, *image);
2008 #endif
2009 rc = -EIO;
2010 errcnt++;
2011 if (errcnt >= 3)
2012 break;
2013 }
2014 }
2015
2016 return rc;
2017 }
2018
2019
2020 /**
2021 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2022 * and verify its contents
2023 */
2024 static int iwl3945_verify_ucode(struct iwl_priv *priv)
2025 {
2026 __le32 *image;
2027 u32 len;
2028 int rc = 0;
2029
2030 /* Try bootstrap */
2031 image = (__le32 *)priv->ucode_boot.v_addr;
2032 len = priv->ucode_boot.len;
2033 rc = iwl3945_verify_inst_sparse(priv, image, len);
2034 if (rc == 0) {
2035 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2036 return 0;
2037 }
2038
2039 /* Try initialize */
2040 image = (__le32 *)priv->ucode_init.v_addr;
2041 len = priv->ucode_init.len;
2042 rc = iwl3945_verify_inst_sparse(priv, image, len);
2043 if (rc == 0) {
2044 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2045 return 0;
2046 }
2047
2048 /* Try runtime/protocol */
2049 image = (__le32 *)priv->ucode_code.v_addr;
2050 len = priv->ucode_code.len;
2051 rc = iwl3945_verify_inst_sparse(priv, image, len);
2052 if (rc == 0) {
2053 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2054 return 0;
2055 }
2056
2057 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2058
2059 /* Since nothing seems to match, show first several data entries in
2060 * instruction SRAM, so maybe visual inspection will give a clue.
2061 * Selection of bootstrap image (vs. other images) is arbitrary. */
2062 image = (__le32 *)priv->ucode_boot.v_addr;
2063 len = priv->ucode_boot.len;
2064 rc = iwl3945_verify_inst_full(priv, image, len);
2065
2066 return rc;
2067 }
2068
2069 static void iwl3945_nic_start(struct iwl_priv *priv)
2070 {
2071 /* Remove all resets to allow NIC to operate */
2072 iwl_write32(priv, CSR_RESET, 0);
2073 }
2074
2075 #define IWL3945_UCODE_GET(item) \
2076 static u32 iwl3945_ucode_get_##item(const struct iwl_ucode_header *ucode)\
2077 { \
2078 return le32_to_cpu(ucode->v1.item); \
2079 }
2080
2081 static u32 iwl3945_ucode_get_header_size(u32 api_ver)
2082 {
2083 return 24;
2084 }
2085
2086 static u8 *iwl3945_ucode_get_data(const struct iwl_ucode_header *ucode)
2087 {
2088 return (u8 *) ucode->v1.data;
2089 }
2090
2091 IWL3945_UCODE_GET(inst_size);
2092 IWL3945_UCODE_GET(data_size);
2093 IWL3945_UCODE_GET(init_size);
2094 IWL3945_UCODE_GET(init_data_size);
2095 IWL3945_UCODE_GET(boot_size);
2096
2097 /**
2098 * iwl3945_read_ucode - Read uCode images from disk file.
2099 *
2100 * Copy into buffers for card to fetch via bus-mastering
2101 */
2102 static int iwl3945_read_ucode(struct iwl_priv *priv)
2103 {
2104 const struct iwl_ucode_header *ucode;
2105 int ret = -EINVAL, index;
2106 const struct firmware *ucode_raw;
2107 /* firmware file name contains uCode/driver compatibility version */
2108 const char *name_pre = priv->cfg->fw_name_pre;
2109 const unsigned int api_max = priv->cfg->ucode_api_max;
2110 const unsigned int api_min = priv->cfg->ucode_api_min;
2111 char buf[25];
2112 u8 *src;
2113 size_t len;
2114 u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
2115
2116 /* Ask kernel firmware_class module to get the boot firmware off disk.
2117 * request_firmware() is synchronous, file is in memory on return. */
2118 for (index = api_max; index >= api_min; index--) {
2119 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
2120 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
2121 if (ret < 0) {
2122 IWL_ERR(priv, "%s firmware file req failed: %d\n",
2123 buf, ret);
2124 if (ret == -ENOENT)
2125 continue;
2126 else
2127 goto error;
2128 } else {
2129 if (index < api_max)
2130 IWL_ERR(priv, "Loaded firmware %s, "
2131 "which is deprecated. "
2132 " Please use API v%u instead.\n",
2133 buf, api_max);
2134 IWL_DEBUG_INFO(priv, "Got firmware '%s' file "
2135 "(%zd bytes) from disk\n",
2136 buf, ucode_raw->size);
2137 break;
2138 }
2139 }
2140
2141 if (ret < 0)
2142 goto error;
2143
2144 /* Make sure that we got at least our header! */
2145 if (ucode_raw->size < iwl3945_ucode_get_header_size(1)) {
2146 IWL_ERR(priv, "File size way too small!\n");
2147 ret = -EINVAL;
2148 goto err_release;
2149 }
2150
2151 /* Data from ucode file: header followed by uCode images */
2152 ucode = (struct iwl_ucode_header *)ucode_raw->data;
2153
2154 priv->ucode_ver = le32_to_cpu(ucode->ver);
2155 api_ver = IWL_UCODE_API(priv->ucode_ver);
2156 inst_size = iwl3945_ucode_get_inst_size(ucode);
2157 data_size = iwl3945_ucode_get_data_size(ucode);
2158 init_size = iwl3945_ucode_get_init_size(ucode);
2159 init_data_size = iwl3945_ucode_get_init_data_size(ucode);
2160 boot_size = iwl3945_ucode_get_boot_size(ucode);
2161 src = iwl3945_ucode_get_data(ucode);
2162
2163 /* api_ver should match the api version forming part of the
2164 * firmware filename ... but we don't check for that and only rely
2165 * on the API version read from firmware header from here on forward */
2166
2167 if (api_ver < api_min || api_ver > api_max) {
2168 IWL_ERR(priv, "Driver unable to support your firmware API. "
2169 "Driver supports v%u, firmware is v%u.\n",
2170 api_max, api_ver);
2171 priv->ucode_ver = 0;
2172 ret = -EINVAL;
2173 goto err_release;
2174 }
2175 if (api_ver != api_max)
2176 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
2177 "got %u. New firmware can be obtained "
2178 "from http://www.intellinuxwireless.org.\n",
2179 api_max, api_ver);
2180
2181 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
2182 IWL_UCODE_MAJOR(priv->ucode_ver),
2183 IWL_UCODE_MINOR(priv->ucode_ver),
2184 IWL_UCODE_API(priv->ucode_ver),
2185 IWL_UCODE_SERIAL(priv->ucode_ver));
2186
2187 snprintf(priv->hw->wiphy->fw_version,
2188 sizeof(priv->hw->wiphy->fw_version),
2189 "%u.%u.%u.%u",
2190 IWL_UCODE_MAJOR(priv->ucode_ver),
2191 IWL_UCODE_MINOR(priv->ucode_ver),
2192 IWL_UCODE_API(priv->ucode_ver),
2193 IWL_UCODE_SERIAL(priv->ucode_ver));
2194
2195 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2196 priv->ucode_ver);
2197 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
2198 inst_size);
2199 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
2200 data_size);
2201 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
2202 init_size);
2203 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
2204 init_data_size);
2205 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
2206 boot_size);
2207
2208
2209 /* Verify size of file vs. image size info in file's header */
2210 if (ucode_raw->size != iwl3945_ucode_get_header_size(api_ver) +
2211 inst_size + data_size + init_size +
2212 init_data_size + boot_size) {
2213
2214 IWL_DEBUG_INFO(priv,
2215 "uCode file size %zd does not match expected size\n",
2216 ucode_raw->size);
2217 ret = -EINVAL;
2218 goto err_release;
2219 }
2220
2221 /* Verify that uCode images will fit in card's SRAM */
2222 if (inst_size > IWL39_MAX_INST_SIZE) {
2223 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
2224 inst_size);
2225 ret = -EINVAL;
2226 goto err_release;
2227 }
2228
2229 if (data_size > IWL39_MAX_DATA_SIZE) {
2230 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
2231 data_size);
2232 ret = -EINVAL;
2233 goto err_release;
2234 }
2235 if (init_size > IWL39_MAX_INST_SIZE) {
2236 IWL_DEBUG_INFO(priv,
2237 "uCode init instr len %d too large to fit in\n",
2238 init_size);
2239 ret = -EINVAL;
2240 goto err_release;
2241 }
2242 if (init_data_size > IWL39_MAX_DATA_SIZE) {
2243 IWL_DEBUG_INFO(priv,
2244 "uCode init data len %d too large to fit in\n",
2245 init_data_size);
2246 ret = -EINVAL;
2247 goto err_release;
2248 }
2249 if (boot_size > IWL39_MAX_BSM_SIZE) {
2250 IWL_DEBUG_INFO(priv,
2251 "uCode boot instr len %d too large to fit in\n",
2252 boot_size);
2253 ret = -EINVAL;
2254 goto err_release;
2255 }
2256
2257 /* Allocate ucode buffers for card's bus-master loading ... */
2258
2259 /* Runtime instructions and 2 copies of data:
2260 * 1) unmodified from disk
2261 * 2) backup cache for save/restore during power-downs */
2262 priv->ucode_code.len = inst_size;
2263 iwl_legacy_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2264
2265 priv->ucode_data.len = data_size;
2266 iwl_legacy_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2267
2268 priv->ucode_data_backup.len = data_size;
2269 iwl_legacy_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2270
2271 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2272 !priv->ucode_data_backup.v_addr)
2273 goto err_pci_alloc;
2274
2275 /* Initialization instructions and data */
2276 if (init_size && init_data_size) {
2277 priv->ucode_init.len = init_size;
2278 iwl_legacy_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2279
2280 priv->ucode_init_data.len = init_data_size;
2281 iwl_legacy_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2282
2283 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2284 goto err_pci_alloc;
2285 }
2286
2287 /* Bootstrap (instructions only, no data) */
2288 if (boot_size) {
2289 priv->ucode_boot.len = boot_size;
2290 iwl_legacy_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2291
2292 if (!priv->ucode_boot.v_addr)
2293 goto err_pci_alloc;
2294 }
2295
2296 /* Copy images into buffers for card's bus-master reads ... */
2297
2298 /* Runtime instructions (first block of data in file) */
2299 len = inst_size;
2300 IWL_DEBUG_INFO(priv,
2301 "Copying (but not loading) uCode instr len %zd\n", len);
2302 memcpy(priv->ucode_code.v_addr, src, len);
2303 src += len;
2304
2305 IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2306 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2307
2308 /* Runtime data (2nd block)
2309 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
2310 len = data_size;
2311 IWL_DEBUG_INFO(priv,
2312 "Copying (but not loading) uCode data len %zd\n", len);
2313 memcpy(priv->ucode_data.v_addr, src, len);
2314 memcpy(priv->ucode_data_backup.v_addr, src, len);
2315 src += len;
2316
2317 /* Initialization instructions (3rd block) */
2318 if (init_size) {
2319 len = init_size;
2320 IWL_DEBUG_INFO(priv,
2321 "Copying (but not loading) init instr len %zd\n", len);
2322 memcpy(priv->ucode_init.v_addr, src, len);
2323 src += len;
2324 }
2325
2326 /* Initialization data (4th block) */
2327 if (init_data_size) {
2328 len = init_data_size;
2329 IWL_DEBUG_INFO(priv,
2330 "Copying (but not loading) init data len %zd\n", len);
2331 memcpy(priv->ucode_init_data.v_addr, src, len);
2332 src += len;
2333 }
2334
2335 /* Bootstrap instructions (5th block) */
2336 len = boot_size;
2337 IWL_DEBUG_INFO(priv,
2338 "Copying (but not loading) boot instr len %zd\n", len);
2339 memcpy(priv->ucode_boot.v_addr, src, len);
2340
2341 /* We have our copies now, allow OS release its copies */
2342 release_firmware(ucode_raw);
2343 return 0;
2344
2345 err_pci_alloc:
2346 IWL_ERR(priv, "failed to allocate pci memory\n");
2347 ret = -ENOMEM;
2348 iwl3945_dealloc_ucode_pci(priv);
2349
2350 err_release:
2351 release_firmware(ucode_raw);
2352
2353 error:
2354 return ret;
2355 }
2356
2357
2358 /**
2359 * iwl3945_set_ucode_ptrs - Set uCode address location
2360 *
2361 * Tell initialization uCode where to find runtime uCode.
2362 *
2363 * BSM registers initially contain pointers to initialization uCode.
2364 * We need to replace them to load runtime uCode inst and data,
2365 * and to save runtime data when powering down.
2366 */
2367 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
2368 {
2369 dma_addr_t pinst;
2370 dma_addr_t pdata;
2371
2372 /* bits 31:0 for 3945 */
2373 pinst = priv->ucode_code.p_addr;
2374 pdata = priv->ucode_data_backup.p_addr;
2375
2376 /* Tell bootstrap uCode where to find image to load */
2377 iwl_legacy_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2378 iwl_legacy_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2379 iwl_legacy_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
2380 priv->ucode_data.len);
2381
2382 /* Inst byte count must be last to set up, bit 31 signals uCode
2383 * that all new ptr/size info is in place */
2384 iwl_legacy_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
2385 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
2386
2387 IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
2388
2389 return 0;
2390 }
2391
2392 /**
2393 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2394 *
2395 * Called after REPLY_ALIVE notification received from "initialize" uCode.
2396 *
2397 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2398 */
2399 static void iwl3945_init_alive_start(struct iwl_priv *priv)
2400 {
2401 /* Check alive response for "valid" sign from uCode */
2402 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
2403 /* We had an error bringing up the hardware, so take it
2404 * all the way back down so we can try again */
2405 IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n");
2406 goto restart;
2407 }
2408
2409 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2410 * This is a paranoid check, because we would not have gotten the
2411 * "initialize" alive if code weren't properly loaded. */
2412 if (iwl3945_verify_ucode(priv)) {
2413 /* Runtime instruction load was bad;
2414 * take it all the way back down so we can try again */
2415 IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
2416 goto restart;
2417 }
2418
2419 /* Send pointers to protocol/runtime uCode image ... init code will
2420 * load and launch runtime uCode, which will send us another "Alive"
2421 * notification. */
2422 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
2423 if (iwl3945_set_ucode_ptrs(priv)) {
2424 /* Runtime instruction load won't happen;
2425 * take it all the way back down so we can try again */
2426 IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
2427 goto restart;
2428 }
2429 return;
2430
2431 restart:
2432 queue_work(priv->workqueue, &priv->restart);
2433 }
2434
2435 /**
2436 * iwl3945_alive_start - called after REPLY_ALIVE notification received
2437 * from protocol/runtime uCode (initialization uCode's
2438 * Alive gets handled by iwl3945_init_alive_start()).
2439 */
2440 static void iwl3945_alive_start(struct iwl_priv *priv)
2441 {
2442 int thermal_spin = 0;
2443 u32 rfkill;
2444 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2445
2446 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2447
2448 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2449 /* We had an error bringing up the hardware, so take it
2450 * all the way back down so we can try again */
2451 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2452 goto restart;
2453 }
2454
2455 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2456 * This is a paranoid check, because we would not have gotten the
2457 * "runtime" alive if code weren't properly loaded. */
2458 if (iwl3945_verify_ucode(priv)) {
2459 /* Runtime instruction load was bad;
2460 * take it all the way back down so we can try again */
2461 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2462 goto restart;
2463 }
2464
2465 rfkill = iwl_legacy_read_prph(priv, APMG_RFKILL_REG);
2466 IWL_DEBUG_INFO(priv, "RFKILL status: 0x%x\n", rfkill);
2467
2468 if (rfkill & 0x1) {
2469 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2470 /* if RFKILL is not on, then wait for thermal
2471 * sensor in adapter to kick in */
2472 while (iwl3945_hw_get_temperature(priv) == 0) {
2473 thermal_spin++;
2474 udelay(10);
2475 }
2476
2477 if (thermal_spin)
2478 IWL_DEBUG_INFO(priv, "Thermal calibration took %dus\n",
2479 thermal_spin * 10);
2480 } else
2481 set_bit(STATUS_RF_KILL_HW, &priv->status);
2482
2483 /* After the ALIVE response, we can send commands to 3945 uCode */
2484 set_bit(STATUS_ALIVE, &priv->status);
2485
2486 /* Enable watchdog to monitor the driver tx queues */
2487 iwl_legacy_setup_watchdog(priv);
2488
2489 if (iwl_legacy_is_rfkill(priv))
2490 return;
2491
2492 ieee80211_wake_queues(priv->hw);
2493
2494 priv->active_rate = IWL_RATES_MASK_3945;
2495
2496 iwl_legacy_power_update_mode(priv, true);
2497
2498 if (iwl_legacy_is_associated(priv, IWL_RXON_CTX_BSS)) {
2499 struct iwl3945_rxon_cmd *active_rxon =
2500 (struct iwl3945_rxon_cmd *)(&ctx->active);
2501
2502 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
2503 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2504 } else {
2505 /* Initialize our rx_config data */
2506 iwl_legacy_connection_init_rx_config(priv, ctx);
2507 }
2508
2509 /* Configure Bluetooth device coexistence support */
2510 iwl_legacy_send_bt_config(priv);
2511
2512 set_bit(STATUS_READY, &priv->status);
2513
2514 /* Configure the adapter for unassociated operation */
2515 iwl3945_commit_rxon(priv, ctx);
2516
2517 iwl3945_reg_txpower_periodic(priv);
2518
2519 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2520 wake_up_interruptible(&priv->wait_command_queue);
2521
2522 return;
2523
2524 restart:
2525 queue_work(priv->workqueue, &priv->restart);
2526 }
2527
2528 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
2529
2530 static void __iwl3945_down(struct iwl_priv *priv)
2531 {
2532 unsigned long flags;
2533 int exit_pending;
2534
2535 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2536
2537 iwl_legacy_scan_cancel_timeout(priv, 200);
2538
2539 exit_pending = test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
2540
2541 /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
2542 * to prevent rearm timer */
2543 del_timer_sync(&priv->watchdog);
2544
2545 /* Station information will now be cleared in device */
2546 iwl_legacy_clear_ucode_stations(priv, NULL);
2547 iwl_legacy_dealloc_bcast_stations(priv);
2548 iwl_legacy_clear_driver_stations(priv);
2549
2550 /* Unblock any waiting calls */
2551 wake_up_interruptible_all(&priv->wait_command_queue);
2552
2553 /* Wipe out the EXIT_PENDING status bit if we are not actually
2554 * exiting the module */
2555 if (!exit_pending)
2556 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2557
2558 /* stop and reset the on-board processor */
2559 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2560
2561 /* tell the device to stop sending interrupts */
2562 spin_lock_irqsave(&priv->lock, flags);
2563 iwl_legacy_disable_interrupts(priv);
2564 spin_unlock_irqrestore(&priv->lock, flags);
2565 iwl3945_synchronize_irq(priv);
2566
2567 if (priv->mac80211_registered)
2568 ieee80211_stop_queues(priv->hw);
2569
2570 /* If we have not previously called iwl3945_init() then
2571 * clear all bits but the RF Kill bits and return */
2572 if (!iwl_legacy_is_init(priv)) {
2573 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2574 STATUS_RF_KILL_HW |
2575 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2576 STATUS_GEO_CONFIGURED |
2577 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2578 STATUS_EXIT_PENDING;
2579 goto exit;
2580 }
2581
2582 /* ...otherwise clear out all the status bits but the RF Kill
2583 * bit and continue taking the NIC down. */
2584 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2585 STATUS_RF_KILL_HW |
2586 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2587 STATUS_GEO_CONFIGURED |
2588 test_bit(STATUS_FW_ERROR, &priv->status) <<
2589 STATUS_FW_ERROR |
2590 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2591 STATUS_EXIT_PENDING;
2592
2593 iwl3945_hw_txq_ctx_stop(priv);
2594 iwl3945_hw_rxq_stop(priv);
2595
2596 /* Power-down device's busmaster DMA clocks */
2597 iwl_legacy_write_prph(priv, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT);
2598 udelay(5);
2599
2600 /* Stop the device, and put it in low power state */
2601 iwl_legacy_apm_stop(priv);
2602
2603 exit:
2604 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2605
2606 if (priv->beacon_skb)
2607 dev_kfree_skb(priv->beacon_skb);
2608 priv->beacon_skb = NULL;
2609
2610 /* clear out any free frames */
2611 iwl3945_clear_free_frames(priv);
2612 }
2613
2614 static void iwl3945_down(struct iwl_priv *priv)
2615 {
2616 mutex_lock(&priv->mutex);
2617 __iwl3945_down(priv);
2618 mutex_unlock(&priv->mutex);
2619
2620 iwl3945_cancel_deferred_work(priv);
2621 }
2622
2623 #define MAX_HW_RESTARTS 5
2624
2625 static int iwl3945_alloc_bcast_station(struct iwl_priv *priv)
2626 {
2627 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2628 unsigned long flags;
2629 u8 sta_id;
2630
2631 spin_lock_irqsave(&priv->sta_lock, flags);
2632 sta_id = iwl_legacy_prep_station(priv, ctx,
2633 iwlegacy_bcast_addr, false, NULL);
2634 if (sta_id == IWL_INVALID_STATION) {
2635 IWL_ERR(priv, "Unable to prepare broadcast station\n");
2636 spin_unlock_irqrestore(&priv->sta_lock, flags);
2637
2638 return -EINVAL;
2639 }
2640
2641 priv->stations[sta_id].used |= IWL_STA_DRIVER_ACTIVE;
2642 priv->stations[sta_id].used |= IWL_STA_BCAST;
2643 spin_unlock_irqrestore(&priv->sta_lock, flags);
2644
2645 return 0;
2646 }
2647
2648 static int __iwl3945_up(struct iwl_priv *priv)
2649 {
2650 int rc, i;
2651
2652 rc = iwl3945_alloc_bcast_station(priv);
2653 if (rc)
2654 return rc;
2655
2656 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2657 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2658 return -EIO;
2659 }
2660
2661 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2662 IWL_ERR(priv, "ucode not available for device bring up\n");
2663 return -EIO;
2664 }
2665
2666 /* If platform's RF_KILL switch is NOT set to KILL */
2667 if (iwl_read32(priv, CSR_GP_CNTRL) &
2668 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2669 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2670 else {
2671 set_bit(STATUS_RF_KILL_HW, &priv->status);
2672 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2673 return -ENODEV;
2674 }
2675
2676 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2677
2678 rc = iwl3945_hw_nic_init(priv);
2679 if (rc) {
2680 IWL_ERR(priv, "Unable to int nic\n");
2681 return rc;
2682 }
2683
2684 /* make sure rfkill handshake bits are cleared */
2685 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2686 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2687 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2688
2689 /* clear (again), then enable host interrupts */
2690 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2691 iwl_legacy_enable_interrupts(priv);
2692
2693 /* really make sure rfkill handshake bits are cleared */
2694 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2695 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2696
2697 /* Copy original ucode data image from disk into backup cache.
2698 * This will be used to initialize the on-board processor's
2699 * data SRAM for a clean start when the runtime program first loads. */
2700 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2701 priv->ucode_data.len);
2702
2703 /* We return success when we resume from suspend and rf_kill is on. */
2704 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
2705 return 0;
2706
2707 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2708
2709 /* load bootstrap state machine,
2710 * load bootstrap program into processor's memory,
2711 * prepare to load the "initialize" uCode */
2712 rc = priv->cfg->ops->lib->load_ucode(priv);
2713
2714 if (rc) {
2715 IWL_ERR(priv,
2716 "Unable to set up bootstrap uCode: %d\n", rc);
2717 continue;
2718 }
2719
2720 /* start card; "initialize" will load runtime ucode */
2721 iwl3945_nic_start(priv);
2722
2723 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2724
2725 return 0;
2726 }
2727
2728 set_bit(STATUS_EXIT_PENDING, &priv->status);
2729 __iwl3945_down(priv);
2730 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2731
2732 /* tried to restart and config the device for as long as our
2733 * patience could withstand */
2734 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2735 return -EIO;
2736 }
2737
2738
2739 /*****************************************************************************
2740 *
2741 * Workqueue callbacks
2742 *
2743 *****************************************************************************/
2744
2745 static void iwl3945_bg_init_alive_start(struct work_struct *data)
2746 {
2747 struct iwl_priv *priv =
2748 container_of(data, struct iwl_priv, init_alive_start.work);
2749
2750 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2751 return;
2752
2753 mutex_lock(&priv->mutex);
2754 iwl3945_init_alive_start(priv);
2755 mutex_unlock(&priv->mutex);
2756 }
2757
2758 static void iwl3945_bg_alive_start(struct work_struct *data)
2759 {
2760 struct iwl_priv *priv =
2761 container_of(data, struct iwl_priv, alive_start.work);
2762
2763 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2764 return;
2765
2766 mutex_lock(&priv->mutex);
2767 iwl3945_alive_start(priv);
2768 mutex_unlock(&priv->mutex);
2769 }
2770
2771 /*
2772 * 3945 cannot interrupt driver when hardware rf kill switch toggles;
2773 * driver must poll CSR_GP_CNTRL_REG register for change. This register
2774 * *is* readable even when device has been SW_RESET into low power mode
2775 * (e.g. during RF KILL).
2776 */
2777 static void iwl3945_rfkill_poll(struct work_struct *data)
2778 {
2779 struct iwl_priv *priv =
2780 container_of(data, struct iwl_priv, _3945.rfkill_poll.work);
2781 bool old_rfkill = test_bit(STATUS_RF_KILL_HW, &priv->status);
2782 bool new_rfkill = !(iwl_read32(priv, CSR_GP_CNTRL)
2783 & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW);
2784
2785 if (new_rfkill != old_rfkill) {
2786 if (new_rfkill)
2787 set_bit(STATUS_RF_KILL_HW, &priv->status);
2788 else
2789 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2790
2791 wiphy_rfkill_set_hw_state(priv->hw->wiphy, new_rfkill);
2792
2793 IWL_DEBUG_RF_KILL(priv, "RF_KILL bit toggled to %s.\n",
2794 new_rfkill ? "disable radio" : "enable radio");
2795 }
2796
2797 /* Keep this running, even if radio now enabled. This will be
2798 * cancelled in mac_start() if system decides to start again */
2799 queue_delayed_work(priv->workqueue, &priv->_3945.rfkill_poll,
2800 round_jiffies_relative(2 * HZ));
2801
2802 }
2803
2804 int iwl3945_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
2805 {
2806 struct iwl_host_cmd cmd = {
2807 .id = REPLY_SCAN_CMD,
2808 .len = sizeof(struct iwl3945_scan_cmd),
2809 .flags = CMD_SIZE_HUGE,
2810 };
2811 struct iwl3945_scan_cmd *scan;
2812 u8 n_probes = 0;
2813 enum ieee80211_band band;
2814 bool is_active = false;
2815 int ret;
2816
2817 lockdep_assert_held(&priv->mutex);
2818
2819 if (!priv->scan_cmd) {
2820 priv->scan_cmd = kmalloc(sizeof(struct iwl3945_scan_cmd) +
2821 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
2822 if (!priv->scan_cmd) {
2823 IWL_DEBUG_SCAN(priv, "Fail to allocate scan memory\n");
2824 return -ENOMEM;
2825 }
2826 }
2827 scan = priv->scan_cmd;
2828 memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
2829
2830 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
2831 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
2832
2833 if (iwl_legacy_is_associated(priv, IWL_RXON_CTX_BSS)) {
2834 u16 interval = 0;
2835 u32 extra;
2836 u32 suspend_time = 100;
2837 u32 scan_suspend_time = 100;
2838
2839 IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
2840
2841 if (priv->is_internal_short_scan)
2842 interval = 0;
2843 else
2844 interval = vif->bss_conf.beacon_int;
2845
2846 scan->suspend_time = 0;
2847 scan->max_out_time = cpu_to_le32(200 * 1024);
2848 if (!interval)
2849 interval = suspend_time;
2850 /*
2851 * suspend time format:
2852 * 0-19: beacon interval in usec (time before exec.)
2853 * 20-23: 0
2854 * 24-31: number of beacons (suspend between channels)
2855 */
2856
2857 extra = (suspend_time / interval) << 24;
2858 scan_suspend_time = 0xFF0FFFFF &
2859 (extra | ((suspend_time % interval) * 1024));
2860
2861 scan->suspend_time = cpu_to_le32(scan_suspend_time);
2862 IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
2863 scan_suspend_time, interval);
2864 }
2865
2866 if (priv->is_internal_short_scan) {
2867 IWL_DEBUG_SCAN(priv, "Start internal passive scan.\n");
2868 } else if (priv->scan_request->n_ssids) {
2869 int i, p = 0;
2870 IWL_DEBUG_SCAN(priv, "Kicking off active scan\n");
2871 for (i = 0; i < priv->scan_request->n_ssids; i++) {
2872 /* always does wildcard anyway */
2873 if (!priv->scan_request->ssids[i].ssid_len)
2874 continue;
2875 scan->direct_scan[p].id = WLAN_EID_SSID;
2876 scan->direct_scan[p].len =
2877 priv->scan_request->ssids[i].ssid_len;
2878 memcpy(scan->direct_scan[p].ssid,
2879 priv->scan_request->ssids[i].ssid,
2880 priv->scan_request->ssids[i].ssid_len);
2881 n_probes++;
2882 p++;
2883 }
2884 is_active = true;
2885 } else
2886 IWL_DEBUG_SCAN(priv, "Kicking off passive scan.\n");
2887
2888 /* We don't build a direct scan probe request; the uCode will do
2889 * that based on the direct_mask added to each channel entry */
2890 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
2891 scan->tx_cmd.sta_id = priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id;
2892 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2893
2894 /* flags + rate selection */
2895
2896 switch (priv->scan_band) {
2897 case IEEE80211_BAND_2GHZ:
2898 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
2899 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
2900 band = IEEE80211_BAND_2GHZ;
2901 break;
2902 case IEEE80211_BAND_5GHZ:
2903 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
2904 band = IEEE80211_BAND_5GHZ;
2905 break;
2906 default:
2907 IWL_WARN(priv, "Invalid scan band\n");
2908 return -EIO;
2909 }
2910
2911 /*
2912 * If active scaning is requested but a certain channel
2913 * is marked passive, we can do active scanning if we
2914 * detect transmissions.
2915 */
2916 scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH_DEFAULT :
2917 IWL_GOOD_CRC_TH_DISABLED;
2918
2919 if (!priv->is_internal_short_scan) {
2920 scan->tx_cmd.len = cpu_to_le16(
2921 iwl_legacy_fill_probe_req(priv,
2922 (struct ieee80211_mgmt *)scan->data,
2923 vif->addr,
2924 priv->scan_request->ie,
2925 priv->scan_request->ie_len,
2926 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
2927 } else {
2928 /* use bcast addr, will not be transmitted but must be valid */
2929 scan->tx_cmd.len = cpu_to_le16(
2930 iwl_legacy_fill_probe_req(priv,
2931 (struct ieee80211_mgmt *)scan->data,
2932 iwlegacy_bcast_addr, NULL, 0,
2933 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
2934 }
2935 /* select Rx antennas */
2936 scan->flags |= iwl3945_get_antenna_flags(priv);
2937
2938 if (priv->is_internal_short_scan) {
2939 scan->channel_count =
2940 iwl3945_get_single_channel_for_scan(priv, vif, band,
2941 (void *)&scan->data[le16_to_cpu(
2942 scan->tx_cmd.len)]);
2943 } else {
2944 scan->channel_count =
2945 iwl3945_get_channels_for_scan(priv, band, is_active, n_probes,
2946 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)], vif);
2947 }
2948
2949 if (scan->channel_count == 0) {
2950 IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
2951 return -EIO;
2952 }
2953
2954 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
2955 scan->channel_count * sizeof(struct iwl3945_scan_channel);
2956 cmd.data = scan;
2957 scan->len = cpu_to_le16(cmd.len);
2958
2959 set_bit(STATUS_SCAN_HW, &priv->status);
2960 ret = iwl_legacy_send_cmd_sync(priv, &cmd);
2961 if (ret)
2962 clear_bit(STATUS_SCAN_HW, &priv->status);
2963 return ret;
2964 }
2965
2966 void iwl3945_post_scan(struct iwl_priv *priv)
2967 {
2968 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2969
2970 /*
2971 * Since setting the RXON may have been deferred while
2972 * performing the scan, fire one off if needed
2973 */
2974 if (memcmp(&ctx->staging, &ctx->active, sizeof(ctx->staging)))
2975 iwl3945_commit_rxon(priv, ctx);
2976 }
2977
2978 static void iwl3945_bg_restart(struct work_struct *data)
2979 {
2980 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2981
2982 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2983 return;
2984
2985 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
2986 struct iwl_rxon_context *ctx;
2987 mutex_lock(&priv->mutex);
2988 for_each_context(priv, ctx)
2989 ctx->vif = NULL;
2990 priv->is_open = 0;
2991 mutex_unlock(&priv->mutex);
2992 iwl3945_down(priv);
2993 ieee80211_restart_hw(priv->hw);
2994 } else {
2995 iwl3945_down(priv);
2996
2997 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2998 return;
2999
3000 mutex_lock(&priv->mutex);
3001 __iwl3945_up(priv);
3002 mutex_unlock(&priv->mutex);
3003 }
3004 }
3005
3006 static void iwl3945_bg_rx_replenish(struct work_struct *data)
3007 {
3008 struct iwl_priv *priv =
3009 container_of(data, struct iwl_priv, rx_replenish);
3010
3011 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3012 return;
3013
3014 mutex_lock(&priv->mutex);
3015 iwl3945_rx_replenish(priv);
3016 mutex_unlock(&priv->mutex);
3017 }
3018
3019 void iwl3945_post_associate(struct iwl_priv *priv)
3020 {
3021 int rc = 0;
3022 struct ieee80211_conf *conf = NULL;
3023 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
3024
3025 if (!ctx->vif || !priv->is_open)
3026 return;
3027
3028 IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3029 ctx->vif->bss_conf.aid, ctx->active.bssid_addr);
3030
3031 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3032 return;
3033
3034 iwl_legacy_scan_cancel_timeout(priv, 200);
3035
3036 conf = iwl_legacy_ieee80211_get_hw_conf(priv->hw);
3037
3038 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3039 iwl3945_commit_rxon(priv, ctx);
3040
3041 rc = iwl_legacy_send_rxon_timing(priv, ctx);
3042 if (rc)
3043 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3044 "Attempting to continue.\n");
3045
3046 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
3047
3048 ctx->staging.assoc_id = cpu_to_le16(ctx->vif->bss_conf.aid);
3049
3050 IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3051 ctx->vif->bss_conf.aid, ctx->vif->bss_conf.beacon_int);
3052
3053 if (ctx->vif->bss_conf.use_short_preamble)
3054 ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3055 else
3056 ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3057
3058 if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK) {
3059 if (ctx->vif->bss_conf.use_short_slot)
3060 ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
3061 else
3062 ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3063 }
3064
3065 iwl3945_commit_rxon(priv, ctx);
3066
3067 switch (ctx->vif->type) {
3068 case NL80211_IFTYPE_STATION:
3069 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
3070 break;
3071 case NL80211_IFTYPE_ADHOC:
3072 iwl3945_send_beacon_cmd(priv);
3073 break;
3074 default:
3075 IWL_ERR(priv, "%s Should not be called in %d mode\n",
3076 __func__, ctx->vif->type);
3077 break;
3078 }
3079 }
3080
3081 /*****************************************************************************
3082 *
3083 * mac80211 entry point functions
3084 *
3085 *****************************************************************************/
3086
3087 #define UCODE_READY_TIMEOUT (2 * HZ)
3088
3089 static int iwl3945_mac_start(struct ieee80211_hw *hw)
3090 {
3091 struct iwl_priv *priv = hw->priv;
3092 int ret;
3093
3094 IWL_DEBUG_MAC80211(priv, "enter\n");
3095
3096 /* we should be verifying the device is ready to be opened */
3097 mutex_lock(&priv->mutex);
3098
3099 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3100 * ucode filename and max sizes are card-specific. */
3101
3102 if (!priv->ucode_code.len) {
3103 ret = iwl3945_read_ucode(priv);
3104 if (ret) {
3105 IWL_ERR(priv, "Could not read microcode: %d\n", ret);
3106 mutex_unlock(&priv->mutex);
3107 goto out_release_irq;
3108 }
3109 }
3110
3111 ret = __iwl3945_up(priv);
3112
3113 mutex_unlock(&priv->mutex);
3114
3115 if (ret)
3116 goto out_release_irq;
3117
3118 IWL_DEBUG_INFO(priv, "Start UP work.\n");
3119
3120 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3121 * mac80211 will not be run successfully. */
3122 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3123 test_bit(STATUS_READY, &priv->status),
3124 UCODE_READY_TIMEOUT);
3125 if (!ret) {
3126 if (!test_bit(STATUS_READY, &priv->status)) {
3127 IWL_ERR(priv,
3128 "Wait for START_ALIVE timeout after %dms.\n",
3129 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3130 ret = -ETIMEDOUT;
3131 goto out_release_irq;
3132 }
3133 }
3134
3135 /* ucode is running and will send rfkill notifications,
3136 * no need to poll the killswitch state anymore */
3137 cancel_delayed_work(&priv->_3945.rfkill_poll);
3138
3139 priv->is_open = 1;
3140 IWL_DEBUG_MAC80211(priv, "leave\n");
3141 return 0;
3142
3143 out_release_irq:
3144 priv->is_open = 0;
3145 IWL_DEBUG_MAC80211(priv, "leave - failed\n");
3146 return ret;
3147 }
3148
3149 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
3150 {
3151 struct iwl_priv *priv = hw->priv;
3152
3153 IWL_DEBUG_MAC80211(priv, "enter\n");
3154
3155 if (!priv->is_open) {
3156 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
3157 return;
3158 }
3159
3160 priv->is_open = 0;
3161
3162 iwl3945_down(priv);
3163
3164 flush_workqueue(priv->workqueue);
3165
3166 /* start polling the killswitch state again */
3167 queue_delayed_work(priv->workqueue, &priv->_3945.rfkill_poll,
3168 round_jiffies_relative(2 * HZ));
3169
3170 IWL_DEBUG_MAC80211(priv, "leave\n");
3171 }
3172
3173 static void iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3174 {
3175 struct iwl_priv *priv = hw->priv;
3176
3177 IWL_DEBUG_MAC80211(priv, "enter\n");
3178
3179 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3180 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3181
3182 if (iwl3945_tx_skb(priv, skb))
3183 dev_kfree_skb_any(skb);
3184
3185 IWL_DEBUG_MAC80211(priv, "leave\n");
3186 }
3187
3188 void iwl3945_config_ap(struct iwl_priv *priv)
3189 {
3190 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
3191 struct ieee80211_vif *vif = ctx->vif;
3192 int rc = 0;
3193
3194 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3195 return;
3196
3197 /* The following should be done only at AP bring up */
3198 if (!(iwl_legacy_is_associated(priv, IWL_RXON_CTX_BSS))) {
3199
3200 /* RXON - unassoc (to set timing command) */
3201 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3202 iwl3945_commit_rxon(priv, ctx);
3203
3204 /* RXON Timing */
3205 rc = iwl_legacy_send_rxon_timing(priv, ctx);
3206 if (rc)
3207 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3208 "Attempting to continue.\n");
3209
3210 ctx->staging.assoc_id = 0;
3211
3212 if (vif->bss_conf.use_short_preamble)
3213 ctx->staging.flags |=
3214 RXON_FLG_SHORT_PREAMBLE_MSK;
3215 else
3216 ctx->staging.flags &=
3217 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3218
3219 if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK) {
3220 if (vif->bss_conf.use_short_slot)
3221 ctx->staging.flags |=
3222 RXON_FLG_SHORT_SLOT_MSK;
3223 else
3224 ctx->staging.flags &=
3225 ~RXON_FLG_SHORT_SLOT_MSK;
3226 }
3227 /* restore RXON assoc */
3228 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
3229 iwl3945_commit_rxon(priv, ctx);
3230 }
3231 iwl3945_send_beacon_cmd(priv);
3232 }
3233
3234 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3235 struct ieee80211_vif *vif,
3236 struct ieee80211_sta *sta,
3237 struct ieee80211_key_conf *key)
3238 {
3239 struct iwl_priv *priv = hw->priv;
3240 int ret = 0;
3241 u8 sta_id = IWL_INVALID_STATION;
3242 u8 static_key;
3243
3244 IWL_DEBUG_MAC80211(priv, "enter\n");
3245
3246 if (iwl3945_mod_params.sw_crypto) {
3247 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
3248 return -EOPNOTSUPP;
3249 }
3250
3251 /*
3252 * To support IBSS RSN, don't program group keys in IBSS, the
3253 * hardware will then not attempt to decrypt the frames.
3254 */
3255 if (vif->type == NL80211_IFTYPE_ADHOC &&
3256 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
3257 return -EOPNOTSUPP;
3258
3259 static_key = !iwl_legacy_is_associated(priv, IWL_RXON_CTX_BSS);
3260
3261 if (!static_key) {
3262 sta_id = iwl_legacy_sta_id_or_broadcast(
3263 priv, &priv->contexts[IWL_RXON_CTX_BSS], sta);
3264 if (sta_id == IWL_INVALID_STATION)
3265 return -EINVAL;
3266 }
3267
3268 mutex_lock(&priv->mutex);
3269 iwl_legacy_scan_cancel_timeout(priv, 100);
3270
3271 switch (cmd) {
3272 case SET_KEY:
3273 if (static_key)
3274 ret = iwl3945_set_static_key(priv, key);
3275 else
3276 ret = iwl3945_set_dynamic_key(priv, key, sta_id);
3277 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
3278 break;
3279 case DISABLE_KEY:
3280 if (static_key)
3281 ret = iwl3945_remove_static_key(priv);
3282 else
3283 ret = iwl3945_clear_sta_key_info(priv, sta_id);
3284 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
3285 break;
3286 default:
3287 ret = -EINVAL;
3288 }
3289
3290 mutex_unlock(&priv->mutex);
3291 IWL_DEBUG_MAC80211(priv, "leave\n");
3292
3293 return ret;
3294 }
3295
3296 static int iwl3945_mac_sta_add(struct ieee80211_hw *hw,
3297 struct ieee80211_vif *vif,
3298 struct ieee80211_sta *sta)
3299 {
3300 struct iwl_priv *priv = hw->priv;
3301 struct iwl3945_sta_priv *sta_priv = (void *)sta->drv_priv;
3302 int ret;
3303 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
3304 u8 sta_id;
3305
3306 IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
3307 sta->addr);
3308 mutex_lock(&priv->mutex);
3309 IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
3310 sta->addr);
3311 sta_priv->common.sta_id = IWL_INVALID_STATION;
3312
3313
3314 ret = iwl_legacy_add_station_common(priv,
3315 &priv->contexts[IWL_RXON_CTX_BSS],
3316 sta->addr, is_ap, sta, &sta_id);
3317 if (ret) {
3318 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
3319 sta->addr, ret);
3320 /* Should we return success if return code is EEXIST ? */
3321 mutex_unlock(&priv->mutex);
3322 return ret;
3323 }
3324
3325 sta_priv->common.sta_id = sta_id;
3326
3327 /* Initialize rate scaling */
3328 IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
3329 sta->addr);
3330 iwl3945_rs_rate_init(priv, sta, sta_id);
3331 mutex_unlock(&priv->mutex);
3332
3333 return 0;
3334 }
3335
3336 static void iwl3945_configure_filter(struct ieee80211_hw *hw,
3337 unsigned int changed_flags,
3338 unsigned int *total_flags,
3339 u64 multicast)
3340 {
3341 struct iwl_priv *priv = hw->priv;
3342 __le32 filter_or = 0, filter_nand = 0;
3343 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
3344
3345 #define CHK(test, flag) do { \
3346 if (*total_flags & (test)) \
3347 filter_or |= (flag); \
3348 else \
3349 filter_nand |= (flag); \
3350 } while (0)
3351
3352 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
3353 changed_flags, *total_flags);
3354
3355 CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
3356 CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK);
3357 CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
3358
3359 #undef CHK
3360
3361 mutex_lock(&priv->mutex);
3362
3363 ctx->staging.filter_flags &= ~filter_nand;
3364 ctx->staging.filter_flags |= filter_or;
3365
3366 /*
3367 * Not committing directly because hardware can perform a scan,
3368 * but even if hw is ready, committing here breaks for some reason,
3369 * we'll eventually commit the filter flags change anyway.
3370 */
3371
3372 mutex_unlock(&priv->mutex);
3373
3374 /*
3375 * Receiving all multicast frames is always enabled by the
3376 * default flags setup in iwl_legacy_connection_init_rx_config()
3377 * since we currently do not support programming multicast
3378 * filters into the device.
3379 */
3380 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
3381 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3382 }
3383
3384
3385 /*****************************************************************************
3386 *
3387 * sysfs attributes
3388 *
3389 *****************************************************************************/
3390
3391 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
3392
3393 /*
3394 * The following adds a new attribute to the sysfs representation
3395 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3396 * used for controlling the debug level.
3397 *
3398 * See the level definitions in iwl for details.
3399 *
3400 * The debug_level being managed using sysfs below is a per device debug
3401 * level that is used instead of the global debug level if it (the per
3402 * device debug level) is set.
3403 */
3404 static ssize_t iwl3945_show_debug_level(struct device *d,
3405 struct device_attribute *attr, char *buf)
3406 {
3407 struct iwl_priv *priv = dev_get_drvdata(d);
3408 return sprintf(buf, "0x%08X\n", iwl_legacy_get_debug_level(priv));
3409 }
3410 static ssize_t iwl3945_store_debug_level(struct device *d,
3411 struct device_attribute *attr,
3412 const char *buf, size_t count)
3413 {
3414 struct iwl_priv *priv = dev_get_drvdata(d);
3415 unsigned long val;
3416 int ret;
3417
3418 ret = strict_strtoul(buf, 0, &val);
3419 if (ret)
3420 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
3421 else {
3422 priv->debug_level = val;
3423 if (iwl_legacy_alloc_traffic_mem(priv))
3424 IWL_ERR(priv,
3425 "Not enough memory to generate traffic log\n");
3426 }
3427 return strnlen(buf, count);
3428 }
3429
3430 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3431 iwl3945_show_debug_level, iwl3945_store_debug_level);
3432
3433 #endif /* CONFIG_IWLWIFI_LEGACY_DEBUG */
3434
3435 static ssize_t iwl3945_show_temperature(struct device *d,
3436 struct device_attribute *attr, char *buf)
3437 {
3438 struct iwl_priv *priv = dev_get_drvdata(d);
3439
3440 if (!iwl_legacy_is_alive(priv))
3441 return -EAGAIN;
3442
3443 return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
3444 }
3445
3446 static DEVICE_ATTR(temperature, S_IRUGO, iwl3945_show_temperature, NULL);
3447
3448 static ssize_t iwl3945_show_tx_power(struct device *d,
3449 struct device_attribute *attr, char *buf)
3450 {
3451 struct iwl_priv *priv = dev_get_drvdata(d);
3452 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3453 }
3454
3455 static ssize_t iwl3945_store_tx_power(struct device *d,
3456 struct device_attribute *attr,
3457 const char *buf, size_t count)
3458 {
3459 struct iwl_priv *priv = dev_get_drvdata(d);
3460 char *p = (char *)buf;
3461 u32 val;
3462
3463 val = simple_strtoul(p, &p, 10);
3464 if (p == buf)
3465 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
3466 else
3467 iwl3945_hw_reg_set_txpower(priv, val);
3468
3469 return count;
3470 }
3471
3472 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, iwl3945_show_tx_power, iwl3945_store_tx_power);
3473
3474 static ssize_t iwl3945_show_flags(struct device *d,
3475 struct device_attribute *attr, char *buf)
3476 {
3477 struct iwl_priv *priv = dev_get_drvdata(d);
3478 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
3479
3480 return sprintf(buf, "0x%04X\n", ctx->active.flags);
3481 }
3482
3483 static ssize_t iwl3945_store_flags(struct device *d,
3484 struct device_attribute *attr,
3485 const char *buf, size_t count)
3486 {
3487 struct iwl_priv *priv = dev_get_drvdata(d);
3488 u32 flags = simple_strtoul(buf, NULL, 0);
3489 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
3490
3491 mutex_lock(&priv->mutex);
3492 if (le32_to_cpu(ctx->staging.flags) != flags) {
3493 /* Cancel any currently running scans... */
3494 if (iwl_legacy_scan_cancel_timeout(priv, 100))
3495 IWL_WARN(priv, "Could not cancel scan.\n");
3496 else {
3497 IWL_DEBUG_INFO(priv, "Committing rxon.flags = 0x%04X\n",
3498 flags);
3499 ctx->staging.flags = cpu_to_le32(flags);
3500 iwl3945_commit_rxon(priv, ctx);
3501 }
3502 }
3503 mutex_unlock(&priv->mutex);
3504
3505 return count;
3506 }
3507
3508 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, iwl3945_show_flags, iwl3945_store_flags);
3509
3510 static ssize_t iwl3945_show_filter_flags(struct device *d,
3511 struct device_attribute *attr, char *buf)
3512 {
3513 struct iwl_priv *priv = dev_get_drvdata(d);
3514 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
3515
3516 return sprintf(buf, "0x%04X\n",
3517 le32_to_cpu(ctx->active.filter_flags));
3518 }
3519
3520 static ssize_t iwl3945_store_filter_flags(struct device *d,
3521 struct device_attribute *attr,
3522 const char *buf, size_t count)
3523 {
3524 struct iwl_priv *priv = dev_get_drvdata(d);
3525 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
3526 u32 filter_flags = simple_strtoul(buf, NULL, 0);
3527
3528 mutex_lock(&priv->mutex);
3529 if (le32_to_cpu(ctx->staging.filter_flags) != filter_flags) {
3530 /* Cancel any currently running scans... */
3531 if (iwl_legacy_scan_cancel_timeout(priv, 100))
3532 IWL_WARN(priv, "Could not cancel scan.\n");
3533 else {
3534 IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
3535 "0x%04X\n", filter_flags);
3536 ctx->staging.filter_flags =
3537 cpu_to_le32(filter_flags);
3538 iwl3945_commit_rxon(priv, ctx);
3539 }
3540 }
3541 mutex_unlock(&priv->mutex);
3542
3543 return count;
3544 }
3545
3546 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, iwl3945_show_filter_flags,
3547 iwl3945_store_filter_flags);
3548
3549 static ssize_t iwl3945_show_measurement(struct device *d,
3550 struct device_attribute *attr, char *buf)
3551 {
3552 struct iwl_priv *priv = dev_get_drvdata(d);
3553 struct iwl_spectrum_notification measure_report;
3554 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3555 u8 *data = (u8 *)&measure_report;
3556 unsigned long flags;
3557
3558 spin_lock_irqsave(&priv->lock, flags);
3559 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3560 spin_unlock_irqrestore(&priv->lock, flags);
3561 return 0;
3562 }
3563 memcpy(&measure_report, &priv->measure_report, size);
3564 priv->measurement_status = 0;
3565 spin_unlock_irqrestore(&priv->lock, flags);
3566
3567 while (size && (PAGE_SIZE - len)) {
3568 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3569 PAGE_SIZE - len, 1);
3570 len = strlen(buf);
3571 if (PAGE_SIZE - len)
3572 buf[len++] = '\n';
3573
3574 ofs += 16;
3575 size -= min(size, 16U);
3576 }
3577
3578 return len;
3579 }
3580
3581 static ssize_t iwl3945_store_measurement(struct device *d,
3582 struct device_attribute *attr,
3583 const char *buf, size_t count)
3584 {
3585 struct iwl_priv *priv = dev_get_drvdata(d);
3586 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
3587 struct ieee80211_measurement_params params = {
3588 .channel = le16_to_cpu(ctx->active.channel),
3589 .start_time = cpu_to_le64(priv->_3945.last_tsf),
3590 .duration = cpu_to_le16(1),
3591 };
3592 u8 type = IWL_MEASURE_BASIC;
3593 u8 buffer[32];
3594 u8 channel;
3595
3596 if (count) {
3597 char *p = buffer;
3598 strncpy(buffer, buf, min(sizeof(buffer), count));
3599 channel = simple_strtoul(p, NULL, 0);
3600 if (channel)
3601 params.channel = channel;
3602
3603 p = buffer;
3604 while (*p && *p != ' ')
3605 p++;
3606 if (*p)
3607 type = simple_strtoul(p + 1, NULL, 0);
3608 }
3609
3610 IWL_DEBUG_INFO(priv, "Invoking measurement of type %d on "
3611 "channel %d (for '%s')\n", type, params.channel, buf);
3612 iwl3945_get_measurement(priv, &params, type);
3613
3614 return count;
3615 }
3616
3617 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3618 iwl3945_show_measurement, iwl3945_store_measurement);
3619
3620 static ssize_t iwl3945_store_retry_rate(struct device *d,
3621 struct device_attribute *attr,
3622 const char *buf, size_t count)
3623 {
3624 struct iwl_priv *priv = dev_get_drvdata(d);
3625
3626 priv->retry_rate = simple_strtoul(buf, NULL, 0);
3627 if (priv->retry_rate <= 0)
3628 priv->retry_rate = 1;
3629
3630 return count;
3631 }
3632
3633 static ssize_t iwl3945_show_retry_rate(struct device *d,
3634 struct device_attribute *attr, char *buf)
3635 {
3636 struct iwl_priv *priv = dev_get_drvdata(d);
3637 return sprintf(buf, "%d", priv->retry_rate);
3638 }
3639
3640 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, iwl3945_show_retry_rate,
3641 iwl3945_store_retry_rate);
3642
3643
3644 static ssize_t iwl3945_show_channels(struct device *d,
3645 struct device_attribute *attr, char *buf)
3646 {
3647 /* all this shit doesn't belong into sysfs anyway */
3648 return 0;
3649 }
3650
3651 static DEVICE_ATTR(channels, S_IRUSR, iwl3945_show_channels, NULL);
3652
3653 static ssize_t iwl3945_show_antenna(struct device *d,
3654 struct device_attribute *attr, char *buf)
3655 {
3656 struct iwl_priv *priv = dev_get_drvdata(d);
3657
3658 if (!iwl_legacy_is_alive(priv))
3659 return -EAGAIN;
3660
3661 return sprintf(buf, "%d\n", iwl3945_mod_params.antenna);
3662 }
3663
3664 static ssize_t iwl3945_store_antenna(struct device *d,
3665 struct device_attribute *attr,
3666 const char *buf, size_t count)
3667 {
3668 struct iwl_priv *priv __maybe_unused = dev_get_drvdata(d);
3669 int ant;
3670
3671 if (count == 0)
3672 return 0;
3673
3674 if (sscanf(buf, "%1i", &ant) != 1) {
3675 IWL_DEBUG_INFO(priv, "not in hex or decimal form.\n");
3676 return count;
3677 }
3678
3679 if ((ant >= 0) && (ant <= 2)) {
3680 IWL_DEBUG_INFO(priv, "Setting antenna select to %d.\n", ant);
3681 iwl3945_mod_params.antenna = (enum iwl3945_antenna)ant;
3682 } else
3683 IWL_DEBUG_INFO(priv, "Bad antenna select value %d.\n", ant);
3684
3685
3686 return count;
3687 }
3688
3689 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, iwl3945_show_antenna, iwl3945_store_antenna);
3690
3691 static ssize_t iwl3945_show_status(struct device *d,
3692 struct device_attribute *attr, char *buf)
3693 {
3694 struct iwl_priv *priv = dev_get_drvdata(d);
3695 if (!iwl_legacy_is_alive(priv))
3696 return -EAGAIN;
3697 return sprintf(buf, "0x%08x\n", (int)priv->status);
3698 }
3699
3700 static DEVICE_ATTR(status, S_IRUGO, iwl3945_show_status, NULL);
3701
3702 static ssize_t iwl3945_dump_error_log(struct device *d,
3703 struct device_attribute *attr,
3704 const char *buf, size_t count)
3705 {
3706 struct iwl_priv *priv = dev_get_drvdata(d);
3707 char *p = (char *)buf;
3708
3709 if (p[0] == '1')
3710 iwl3945_dump_nic_error_log(priv);
3711
3712 return strnlen(buf, count);
3713 }
3714
3715 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, iwl3945_dump_error_log);
3716
3717 /*****************************************************************************
3718 *
3719 * driver setup and tear down
3720 *
3721 *****************************************************************************/
3722
3723 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
3724 {
3725 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3726
3727 init_waitqueue_head(&priv->wait_command_queue);
3728
3729 INIT_WORK(&priv->restart, iwl3945_bg_restart);
3730 INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
3731 INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
3732 INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
3733 INIT_DELAYED_WORK(&priv->_3945.rfkill_poll, iwl3945_rfkill_poll);
3734
3735 iwl_legacy_setup_scan_deferred_work(priv);
3736
3737 iwl3945_hw_setup_deferred_work(priv);
3738
3739 init_timer(&priv->watchdog);
3740 priv->watchdog.data = (unsigned long)priv;
3741 priv->watchdog.function = iwl_legacy_bg_watchdog;
3742
3743 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3744 iwl3945_irq_tasklet, (unsigned long)priv);
3745 }
3746
3747 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
3748 {
3749 iwl3945_hw_cancel_deferred_work(priv);
3750
3751 cancel_delayed_work_sync(&priv->init_alive_start);
3752 cancel_delayed_work(&priv->alive_start);
3753
3754 iwl_legacy_cancel_scan_deferred_work(priv);
3755 }
3756
3757 static struct attribute *iwl3945_sysfs_entries[] = {
3758 &dev_attr_antenna.attr,
3759 &dev_attr_channels.attr,
3760 &dev_attr_dump_errors.attr,
3761 &dev_attr_flags.attr,
3762 &dev_attr_filter_flags.attr,
3763 &dev_attr_measurement.attr,
3764 &dev_attr_retry_rate.attr,
3765 &dev_attr_status.attr,
3766 &dev_attr_temperature.attr,
3767 &dev_attr_tx_power.attr,
3768 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
3769 &dev_attr_debug_level.attr,
3770 #endif
3771 NULL
3772 };
3773
3774 static struct attribute_group iwl3945_attribute_group = {
3775 .name = NULL, /* put in device directory */
3776 .attrs = iwl3945_sysfs_entries,
3777 };
3778
3779 struct ieee80211_ops iwl3945_hw_ops = {
3780 .tx = iwl3945_mac_tx,
3781 .start = iwl3945_mac_start,
3782 .stop = iwl3945_mac_stop,
3783 .add_interface = iwl_legacy_mac_add_interface,
3784 .remove_interface = iwl_legacy_mac_remove_interface,
3785 .change_interface = iwl_legacy_mac_change_interface,
3786 .config = iwl_legacy_mac_config,
3787 .configure_filter = iwl3945_configure_filter,
3788 .set_key = iwl3945_mac_set_key,
3789 .conf_tx = iwl_legacy_mac_conf_tx,
3790 .reset_tsf = iwl_legacy_mac_reset_tsf,
3791 .bss_info_changed = iwl_legacy_mac_bss_info_changed,
3792 .hw_scan = iwl_legacy_mac_hw_scan,
3793 .sta_add = iwl3945_mac_sta_add,
3794 .sta_remove = iwl_legacy_mac_sta_remove,
3795 .tx_last_beacon = iwl_legacy_mac_tx_last_beacon,
3796 };
3797
3798 static int iwl3945_init_drv(struct iwl_priv *priv)
3799 {
3800 int ret;
3801 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
3802
3803 priv->retry_rate = 1;
3804 priv->beacon_skb = NULL;
3805
3806 spin_lock_init(&priv->sta_lock);
3807 spin_lock_init(&priv->hcmd_lock);
3808
3809 INIT_LIST_HEAD(&priv->free_frames);
3810
3811 mutex_init(&priv->mutex);
3812 mutex_init(&priv->sync_cmd_mutex);
3813
3814 priv->ieee_channels = NULL;
3815 priv->ieee_rates = NULL;
3816 priv->band = IEEE80211_BAND_2GHZ;
3817
3818 priv->iw_mode = NL80211_IFTYPE_STATION;
3819 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
3820
3821 /* initialize force reset */
3822 priv->force_reset[IWL_RF_RESET].reset_duration =
3823 IWL_DELAY_NEXT_FORCE_RF_RESET;
3824 priv->force_reset[IWL_FW_RESET].reset_duration =
3825 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
3826
3827
3828 priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER;
3829 priv->tx_power_next = IWL_DEFAULT_TX_POWER;
3830
3831 if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
3832 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
3833 eeprom->version);
3834 ret = -EINVAL;
3835 goto err;
3836 }
3837 ret = iwl_legacy_init_channel_map(priv);
3838 if (ret) {
3839 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3840 goto err;
3841 }
3842
3843 /* Set up txpower settings in driver for all channels */
3844 if (iwl3945_txpower_set_from_eeprom(priv)) {
3845 ret = -EIO;
3846 goto err_free_channel_map;
3847 }
3848
3849 ret = iwl_legacy_init_geos(priv);
3850 if (ret) {
3851 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3852 goto err_free_channel_map;
3853 }
3854 iwl3945_init_hw_rates(priv, priv->ieee_rates);
3855
3856 return 0;
3857
3858 err_free_channel_map:
3859 iwl_legacy_free_channel_map(priv);
3860 err:
3861 return ret;
3862 }
3863
3864 #define IWL3945_MAX_PROBE_REQUEST 200
3865
3866 static int iwl3945_setup_mac(struct iwl_priv *priv)
3867 {
3868 int ret;
3869 struct ieee80211_hw *hw = priv->hw;
3870
3871 hw->rate_control_algorithm = "iwl-3945-rs";
3872 hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
3873 hw->vif_data_size = sizeof(struct iwl_vif_priv);
3874
3875 /* Tell mac80211 our characteristics */
3876 hw->flags = IEEE80211_HW_SIGNAL_DBM |
3877 IEEE80211_HW_SPECTRUM_MGMT;
3878
3879 hw->wiphy->interface_modes =
3880 priv->contexts[IWL_RXON_CTX_BSS].interface_modes;
3881
3882 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
3883 WIPHY_FLAG_DISABLE_BEACON_HINTS |
3884 WIPHY_FLAG_IBSS_RSN;
3885
3886 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX_3945;
3887 /* we create the 802.11 header and a zero-length SSID element */
3888 hw->wiphy->max_scan_ie_len = IWL3945_MAX_PROBE_REQUEST - 24 - 2;
3889
3890 /* Default value; 4 EDCA QOS priorities */
3891 hw->queues = 4;
3892
3893 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
3894 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3895 &priv->bands[IEEE80211_BAND_2GHZ];
3896
3897 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
3898 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
3899 &priv->bands[IEEE80211_BAND_5GHZ];
3900
3901 iwl_legacy_leds_init(priv);
3902
3903 ret = ieee80211_register_hw(priv->hw);
3904 if (ret) {
3905 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
3906 return ret;
3907 }
3908 priv->mac80211_registered = 1;
3909
3910 return 0;
3911 }
3912
3913 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3914 {
3915 int err = 0, i;
3916 struct iwl_priv *priv;
3917 struct ieee80211_hw *hw;
3918 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3919 struct iwl3945_eeprom *eeprom;
3920 unsigned long flags;
3921
3922 /***********************
3923 * 1. Allocating HW data
3924 * ********************/
3925
3926 /* mac80211 allocates memory for this device instance, including
3927 * space for this driver's private structure */
3928 hw = iwl_legacy_alloc_all(cfg);
3929 if (hw == NULL) {
3930 pr_err("Can not allocate network device\n");
3931 err = -ENOMEM;
3932 goto out;
3933 }
3934 priv = hw->priv;
3935 SET_IEEE80211_DEV(hw, &pdev->dev);
3936
3937 priv->cmd_queue = IWL39_CMD_QUEUE_NUM;
3938
3939 /* 3945 has only one valid context */
3940 priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
3941
3942 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
3943 priv->contexts[i].ctxid = i;
3944
3945 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
3946 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
3947 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
3948 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
3949 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
3950 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
3951 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
3952 BIT(NL80211_IFTYPE_STATION) |
3953 BIT(NL80211_IFTYPE_ADHOC);
3954 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
3955 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
3956 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
3957
3958 /*
3959 * Disabling hardware scan means that mac80211 will perform scans
3960 * "the hard way", rather than using device's scan.
3961 */
3962 if (iwl3945_mod_params.disable_hw_scan) {
3963 dev_printk(KERN_DEBUG, &(pdev->dev),
3964 "sw scan support is deprecated\n");
3965 iwl3945_hw_ops.hw_scan = NULL;
3966 }
3967
3968 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3969 priv->cfg = cfg;
3970 priv->pci_dev = pdev;
3971 priv->inta_mask = CSR_INI_SET_MASK;
3972
3973 if (iwl_legacy_alloc_traffic_mem(priv))
3974 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3975
3976 /***************************
3977 * 2. Initializing PCI bus
3978 * *************************/
3979 pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 |
3980 PCIE_LINK_STATE_CLKPM);
3981
3982 if (pci_enable_device(pdev)) {
3983 err = -ENODEV;
3984 goto out_ieee80211_free_hw;
3985 }
3986
3987 pci_set_master(pdev);
3988
3989 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3990 if (!err)
3991 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3992 if (err) {
3993 IWL_WARN(priv, "No suitable DMA available.\n");
3994 goto out_pci_disable_device;
3995 }
3996
3997 pci_set_drvdata(pdev, priv);
3998 err = pci_request_regions(pdev, DRV_NAME);
3999 if (err)
4000 goto out_pci_disable_device;
4001
4002 /***********************
4003 * 3. Read REV Register
4004 * ********************/
4005 priv->hw_base = pci_iomap(pdev, 0, 0);
4006 if (!priv->hw_base) {
4007 err = -ENODEV;
4008 goto out_pci_release_regions;
4009 }
4010
4011 IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
4012 (unsigned long long) pci_resource_len(pdev, 0));
4013 IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
4014
4015 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4016 * PCI Tx retries from interfering with C3 CPU state */
4017 pci_write_config_byte(pdev, 0x41, 0x00);
4018
4019 /* these spin locks will be used in apm_ops.init and EEPROM access
4020 * we should init now
4021 */
4022 spin_lock_init(&priv->reg_lock);
4023 spin_lock_init(&priv->lock);
4024
4025 /*
4026 * stop and reset the on-board processor just in case it is in a
4027 * strange state ... like being left stranded by a primary kernel
4028 * and this is now the kdump kernel trying to start up
4029 */
4030 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
4031
4032 /***********************
4033 * 4. Read EEPROM
4034 * ********************/
4035
4036 /* Read the EEPROM */
4037 err = iwl_legacy_eeprom_init(priv);
4038 if (err) {
4039 IWL_ERR(priv, "Unable to init EEPROM\n");
4040 goto out_iounmap;
4041 }
4042 /* MAC Address location in EEPROM same for 3945/4965 */
4043 eeprom = (struct iwl3945_eeprom *)priv->eeprom;
4044 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", eeprom->mac_address);
4045 SET_IEEE80211_PERM_ADDR(priv->hw, eeprom->mac_address);
4046
4047 /***********************
4048 * 5. Setup HW Constants
4049 * ********************/
4050 /* Device-specific setup */
4051 if (iwl3945_hw_set_hw_params(priv)) {
4052 IWL_ERR(priv, "failed to set hw settings\n");
4053 goto out_eeprom_free;
4054 }
4055
4056 /***********************
4057 * 6. Setup priv
4058 * ********************/
4059
4060 err = iwl3945_init_drv(priv);
4061 if (err) {
4062 IWL_ERR(priv, "initializing driver failed\n");
4063 goto out_unset_hw_params;
4064 }
4065
4066 IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
4067 priv->cfg->name);
4068
4069 /***********************
4070 * 7. Setup Services
4071 * ********************/
4072
4073 spin_lock_irqsave(&priv->lock, flags);
4074 iwl_legacy_disable_interrupts(priv);
4075 spin_unlock_irqrestore(&priv->lock, flags);
4076
4077 pci_enable_msi(priv->pci_dev);
4078
4079 err = request_irq(priv->pci_dev->irq, iwl_legacy_isr,
4080 IRQF_SHARED, DRV_NAME, priv);
4081 if (err) {
4082 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
4083 goto out_disable_msi;
4084 }
4085
4086 err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4087 if (err) {
4088 IWL_ERR(priv, "failed to create sysfs device attributes\n");
4089 goto out_release_irq;
4090 }
4091
4092 iwl_legacy_set_rxon_channel(priv,
4093 &priv->bands[IEEE80211_BAND_2GHZ].channels[5],
4094 &priv->contexts[IWL_RXON_CTX_BSS]);
4095 iwl3945_setup_deferred_work(priv);
4096 iwl3945_setup_rx_handlers(priv);
4097 iwl_legacy_power_initialize(priv);
4098
4099 /*********************************
4100 * 8. Setup and Register mac80211
4101 * *******************************/
4102
4103 iwl_legacy_enable_interrupts(priv);
4104
4105 err = iwl3945_setup_mac(priv);
4106 if (err)
4107 goto out_remove_sysfs;
4108
4109 err = iwl_legacy_dbgfs_register(priv, DRV_NAME);
4110 if (err)
4111 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
4112
4113 /* Start monitoring the killswitch */
4114 queue_delayed_work(priv->workqueue, &priv->_3945.rfkill_poll,
4115 2 * HZ);
4116
4117 return 0;
4118
4119 out_remove_sysfs:
4120 destroy_workqueue(priv->workqueue);
4121 priv->workqueue = NULL;
4122 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4123 out_release_irq:
4124 free_irq(priv->pci_dev->irq, priv);
4125 out_disable_msi:
4126 pci_disable_msi(priv->pci_dev);
4127 iwl_legacy_free_geos(priv);
4128 iwl_legacy_free_channel_map(priv);
4129 out_unset_hw_params:
4130 iwl3945_unset_hw_params(priv);
4131 out_eeprom_free:
4132 iwl_legacy_eeprom_free(priv);
4133 out_iounmap:
4134 pci_iounmap(pdev, priv->hw_base);
4135 out_pci_release_regions:
4136 pci_release_regions(pdev);
4137 out_pci_disable_device:
4138 pci_set_drvdata(pdev, NULL);
4139 pci_disable_device(pdev);
4140 out_ieee80211_free_hw:
4141 iwl_legacy_free_traffic_mem(priv);
4142 ieee80211_free_hw(priv->hw);
4143 out:
4144 return err;
4145 }
4146
4147 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
4148 {
4149 struct iwl_priv *priv = pci_get_drvdata(pdev);
4150 unsigned long flags;
4151
4152 if (!priv)
4153 return;
4154
4155 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
4156
4157 iwl_legacy_dbgfs_unregister(priv);
4158
4159 set_bit(STATUS_EXIT_PENDING, &priv->status);
4160
4161 iwl_legacy_leds_exit(priv);
4162
4163 if (priv->mac80211_registered) {
4164 ieee80211_unregister_hw(priv->hw);
4165 priv->mac80211_registered = 0;
4166 } else {
4167 iwl3945_down(priv);
4168 }
4169
4170 /*
4171 * Make sure device is reset to low power before unloading driver.
4172 * This may be redundant with iwl_down(), but there are paths to
4173 * run iwl_down() without calling apm_ops.stop(), and there are
4174 * paths to avoid running iwl_down() at all before leaving driver.
4175 * This (inexpensive) call *makes sure* device is reset.
4176 */
4177 iwl_legacy_apm_stop(priv);
4178
4179 /* make sure we flush any pending irq or
4180 * tasklet for the driver
4181 */
4182 spin_lock_irqsave(&priv->lock, flags);
4183 iwl_legacy_disable_interrupts(priv);
4184 spin_unlock_irqrestore(&priv->lock, flags);
4185
4186 iwl3945_synchronize_irq(priv);
4187
4188 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4189
4190 cancel_delayed_work_sync(&priv->_3945.rfkill_poll);
4191
4192 iwl3945_dealloc_ucode_pci(priv);
4193
4194 if (priv->rxq.bd)
4195 iwl3945_rx_queue_free(priv, &priv->rxq);
4196 iwl3945_hw_txq_ctx_free(priv);
4197
4198 iwl3945_unset_hw_params(priv);
4199
4200 /*netif_stop_queue(dev); */
4201 flush_workqueue(priv->workqueue);
4202
4203 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4204 * priv->workqueue... so we can't take down the workqueue
4205 * until now... */
4206 destroy_workqueue(priv->workqueue);
4207 priv->workqueue = NULL;
4208 iwl_legacy_free_traffic_mem(priv);
4209
4210 free_irq(pdev->irq, priv);
4211 pci_disable_msi(pdev);
4212
4213 pci_iounmap(pdev, priv->hw_base);
4214 pci_release_regions(pdev);
4215 pci_disable_device(pdev);
4216 pci_set_drvdata(pdev, NULL);
4217
4218 iwl_legacy_free_channel_map(priv);
4219 iwl_legacy_free_geos(priv);
4220 kfree(priv->scan_cmd);
4221 if (priv->beacon_skb)
4222 dev_kfree_skb(priv->beacon_skb);
4223
4224 ieee80211_free_hw(priv->hw);
4225 }
4226
4227
4228 /*****************************************************************************
4229 *
4230 * driver and module entry point
4231 *
4232 *****************************************************************************/
4233
4234 static struct pci_driver iwl3945_driver = {
4235 .name = DRV_NAME,
4236 .id_table = iwl3945_hw_card_ids,
4237 .probe = iwl3945_pci_probe,
4238 .remove = __devexit_p(iwl3945_pci_remove),
4239 .driver.pm = IWL_LEGACY_PM_OPS,
4240 };
4241
4242 static int __init iwl3945_init(void)
4243 {
4244
4245 int ret;
4246 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
4247 pr_info(DRV_COPYRIGHT "\n");
4248
4249 ret = iwl3945_rate_control_register();
4250 if (ret) {
4251 pr_err("Unable to register rate control algorithm: %d\n", ret);
4252 return ret;
4253 }
4254
4255 ret = pci_register_driver(&iwl3945_driver);
4256 if (ret) {
4257 pr_err("Unable to initialize PCI module\n");
4258 goto error_register;
4259 }
4260
4261 return ret;
4262
4263 error_register:
4264 iwl3945_rate_control_unregister();
4265 return ret;
4266 }
4267
4268 static void __exit iwl3945_exit(void)
4269 {
4270 pci_unregister_driver(&iwl3945_driver);
4271 iwl3945_rate_control_unregister();
4272 }
4273
4274 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
4275
4276 module_param_named(antenna, iwl3945_mod_params.antenna, int, S_IRUGO);
4277 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
4278 module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, S_IRUGO);
4279 MODULE_PARM_DESC(swcrypto,
4280 "using software crypto (default 1 [software])");
4281 module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan,
4282 int, S_IRUGO);
4283 MODULE_PARM_DESC(disable_hw_scan,
4284 "disable hardware scanning (default 0) (deprecated)");
4285 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
4286 module_param_named(debug, iwlegacy_debug_level, uint, S_IRUGO | S_IWUSR);
4287 MODULE_PARM_DESC(debug, "debug output mask");
4288 #endif
4289 module_param_named(fw_restart, iwl3945_mod_params.restart_fw, int, S_IRUGO);
4290 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
4291
4292 module_exit(iwl3945_exit);
4293 module_init(iwl3945_init);
CRIS linux kernel tree