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Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl3945-base.c')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl3945-base.c4322
1 files changed, 0 insertions, 4322 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c
deleted file mode 100644
index d31661c1ce77..000000000000
--- a/drivers/net/wireless/iwlwifi/iwl3945-base.c
+++ /dev/null
@@ -1,4322 +0,0 @@
1/******************************************************************************
2 *
3 * Copyright(c) 2003 - 2010 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/slab.h>
37#include <linux/dma-mapping.h>
38#include <linux/delay.h>
39#include <linux/sched.h>
40#include <linux/skbuff.h>
41#include <linux/netdevice.h>
42#include <linux/wireless.h>
43#include <linux/firmware.h>
44#include <linux/etherdevice.h>
45#include <linux/if_arp.h>
46
47#include <net/ieee80211_radiotap.h>
48#include <net/mac80211.h>
49
50#include <asm/div64.h>
51
52#define DRV_NAME "iwl3945"
53
54#include "iwl-fh.h"
55#include "iwl-3945-fh.h"
56#include "iwl-commands.h"
57#include "iwl-sta.h"
58#include "iwl-3945.h"
59#include "iwl-core.h"
60#include "iwl-helpers.h"
61#include "iwl-dev.h"
62#include "iwl-spectrum.h"
63
64/*
65 * module name, copyright, version, etc.
66 */
67
68#define DRV_DESCRIPTION \
69"Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
70
71#ifdef CONFIG_IWLWIFI_DEBUG
72#define VD "d"
73#else
74#define VD
75#endif
76
77/*
78 * add "s" to indicate spectrum measurement included.
79 * we add it here to be consistent with previous releases in which
80 * this was configurable.
81 */
82#define DRV_VERSION IWLWIFI_VERSION VD "s"
83#define DRV_COPYRIGHT "Copyright(c) 2003-2010 Intel Corporation"
84#define DRV_AUTHOR "<ilw@linux.intel.com>"
85
86MODULE_DESCRIPTION(DRV_DESCRIPTION);
87MODULE_VERSION(DRV_VERSION);
88MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
89MODULE_LICENSE("GPL");
90
91 /* module parameters */
92struct iwl_mod_params iwl3945_mod_params = {
93 .sw_crypto = 1,
94 .restart_fw = 1,
95 /* the rest are 0 by default */
96};
97
98/**
99 * iwl3945_get_antenna_flags - Get antenna flags for RXON command
100 * @priv: eeprom and antenna fields are used to determine antenna flags
101 *
102 * priv->eeprom39 is used to determine if antenna AUX/MAIN are reversed
103 * iwl3945_mod_params.antenna specifies the antenna diversity mode:
104 *
105 * IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
106 * IWL_ANTENNA_MAIN - Force MAIN antenna
107 * IWL_ANTENNA_AUX - Force AUX antenna
108 */
109__le32 iwl3945_get_antenna_flags(const struct iwl_priv *priv)
110{
111 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
112
113 switch (iwl3945_mod_params.antenna) {
114 case IWL_ANTENNA_DIVERSITY:
115 return 0;
116
117 case IWL_ANTENNA_MAIN:
118 if (eeprom->antenna_switch_type)
119 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
120 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
121
122 case IWL_ANTENNA_AUX:
123 if (eeprom->antenna_switch_type)
124 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
125 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
126 }
127
128 /* bad antenna selector value */
129 IWL_ERR(priv, "Bad antenna selector value (0x%x)\n",
130 iwl3945_mod_params.antenna);
131
132 return 0; /* "diversity" is default if error */
133}
134
135static int iwl3945_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
136 struct ieee80211_key_conf *keyconf,
137 u8 sta_id)
138{
139 unsigned long flags;
140 __le16 key_flags = 0;
141 int ret;
142
143 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
144 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
145
146 if (sta_id == priv->hw_params.bcast_sta_id)
147 key_flags |= STA_KEY_MULTICAST_MSK;
148
149 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
150 keyconf->hw_key_idx = keyconf->keyidx;
151 key_flags &= ~STA_KEY_FLG_INVALID;
152
153 spin_lock_irqsave(&priv->sta_lock, flags);
154 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
155 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
156 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
157 keyconf->keylen);
158
159 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
160 keyconf->keylen);
161
162 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
163 == STA_KEY_FLG_NO_ENC)
164 priv->stations[sta_id].sta.key.key_offset =
165 iwl_get_free_ucode_key_index(priv);
166 /* else, we are overriding an existing key => no need to allocated room
167 * in uCode. */
168
169 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
170 "no space for a new key");
171
172 priv->stations[sta_id].sta.key.key_flags = key_flags;
173 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
174 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
175
176 IWL_DEBUG_INFO(priv, "hwcrypto: modify ucode station key info\n");
177
178 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
179
180 spin_unlock_irqrestore(&priv->sta_lock, flags);
181
182 return ret;
183}
184
185static int iwl3945_set_tkip_dynamic_key_info(struct iwl_priv *priv,
186 struct ieee80211_key_conf *keyconf,
187 u8 sta_id)
188{
189 return -EOPNOTSUPP;
190}
191
192static int iwl3945_set_wep_dynamic_key_info(struct iwl_priv *priv,
193 struct ieee80211_key_conf *keyconf,
194 u8 sta_id)
195{
196 return -EOPNOTSUPP;
197}
198
199static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
200{
201 unsigned long flags;
202 struct iwl_addsta_cmd sta_cmd;
203
204 spin_lock_irqsave(&priv->sta_lock, flags);
205 memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl_hw_key));
206 memset(&priv->stations[sta_id].sta.key, 0,
207 sizeof(struct iwl4965_keyinfo));
208 priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
209 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
210 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
211 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
212 spin_unlock_irqrestore(&priv->sta_lock, flags);
213
214 IWL_DEBUG_INFO(priv, "hwcrypto: clear ucode station key info\n");
215 return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
216}
217
218static int iwl3945_set_dynamic_key(struct iwl_priv *priv,
219 struct ieee80211_key_conf *keyconf, u8 sta_id)
220{
221 int ret = 0;
222
223 keyconf->hw_key_idx = HW_KEY_DYNAMIC;
224
225 switch (keyconf->alg) {
226 case ALG_CCMP:
227 ret = iwl3945_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
228 break;
229 case ALG_TKIP:
230 ret = iwl3945_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
231 break;
232 case ALG_WEP:
233 ret = iwl3945_set_wep_dynamic_key_info(priv, keyconf, sta_id);
234 break;
235 default:
236 IWL_ERR(priv, "Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
237 ret = -EINVAL;
238 }
239
240 IWL_DEBUG_WEP(priv, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
241 keyconf->alg, keyconf->keylen, keyconf->keyidx,
242 sta_id, ret);
243
244 return ret;
245}
246
247static int iwl3945_remove_static_key(struct iwl_priv *priv)
248{
249 int ret = -EOPNOTSUPP;
250
251 return ret;
252}
253
254static int iwl3945_set_static_key(struct iwl_priv *priv,
255 struct ieee80211_key_conf *key)
256{
257 if (key->alg == ALG_WEP)
258 return -EOPNOTSUPP;
259
260 IWL_ERR(priv, "Static key invalid: alg %d\n", key->alg);
261 return -EINVAL;
262}
263
264static void iwl3945_clear_free_frames(struct iwl_priv *priv)
265{
266 struct list_head *element;
267
268 IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
269 priv->frames_count);
270
271 while (!list_empty(&priv->free_frames)) {
272 element = priv->free_frames.next;
273 list_del(element);
274 kfree(list_entry(element, struct iwl3945_frame, list));
275 priv->frames_count--;
276 }
277
278 if (priv->frames_count) {
279 IWL_WARN(priv, "%d frames still in use. Did we lose one?\n",
280 priv->frames_count);
281 priv->frames_count = 0;
282 }
283}
284
285static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv)
286{
287 struct iwl3945_frame *frame;
288 struct list_head *element;
289 if (list_empty(&priv->free_frames)) {
290 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
291 if (!frame) {
292 IWL_ERR(priv, "Could not allocate frame!\n");
293 return NULL;
294 }
295
296 priv->frames_count++;
297 return frame;
298 }
299
300 element = priv->free_frames.next;
301 list_del(element);
302 return list_entry(element, struct iwl3945_frame, list);
303}
304
305static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame)
306{
307 memset(frame, 0, sizeof(*frame));
308 list_add(&frame->list, &priv->free_frames);
309}
310
311unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
312 struct ieee80211_hdr *hdr,
313 int left)
314{
315
316 if (!iwl_is_associated(priv) || !priv->ibss_beacon)
317 return 0;
318
319 if (priv->ibss_beacon->len > left)
320 return 0;
321
322 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
323
324 return priv->ibss_beacon->len;
325}
326
327static int iwl3945_send_beacon_cmd(struct iwl_priv *priv)
328{
329 struct iwl3945_frame *frame;
330 unsigned int frame_size;
331 int rc;
332 u8 rate;
333
334 frame = iwl3945_get_free_frame(priv);
335
336 if (!frame) {
337 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
338 "command.\n");
339 return -ENOMEM;
340 }
341
342 rate = iwl_rate_get_lowest_plcp(priv);
343
344 frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
345
346 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
347 &frame->u.cmd[0]);
348
349 iwl3945_free_frame(priv, frame);
350
351 return rc;
352}
353
354static void iwl3945_unset_hw_params(struct iwl_priv *priv)
355{
356 if (priv->_3945.shared_virt)
357 dma_free_coherent(&priv->pci_dev->dev,
358 sizeof(struct iwl3945_shared),
359 priv->_3945.shared_virt,
360 priv->_3945.shared_phys);
361}
362
363static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
364 struct ieee80211_tx_info *info,
365 struct iwl_device_cmd *cmd,
366 struct sk_buff *skb_frag,
367 int sta_id)
368{
369 struct iwl3945_tx_cmd *tx_cmd = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
370 struct iwl_hw_key *keyinfo = &priv->stations[sta_id].keyinfo;
371
372 switch (keyinfo->alg) {
373 case ALG_CCMP:
374 tx_cmd->sec_ctl = TX_CMD_SEC_CCM;
375 memcpy(tx_cmd->key, keyinfo->key, keyinfo->keylen);
376 IWL_DEBUG_TX(priv, "tx_cmd with AES hwcrypto\n");
377 break;
378
379 case ALG_TKIP:
380 break;
381
382 case ALG_WEP:
383 tx_cmd->sec_ctl = TX_CMD_SEC_WEP |
384 (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
385
386 if (keyinfo->keylen == 13)
387 tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128;
388
389 memcpy(&tx_cmd->key[3], keyinfo->key, keyinfo->keylen);
390
391 IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption "
392 "with key %d\n", info->control.hw_key->hw_key_idx);
393 break;
394
395 default:
396 IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg);
397 break;
398 }
399}
400
401/*
402 * handle build REPLY_TX command notification.
403 */
404static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
405 struct iwl_device_cmd *cmd,
406 struct ieee80211_tx_info *info,
407 struct ieee80211_hdr *hdr, u8 std_id)
408{
409 struct iwl3945_tx_cmd *tx_cmd = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
410 __le32 tx_flags = tx_cmd->tx_flags;
411 __le16 fc = hdr->frame_control;
412
413 tx_cmd->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
414 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
415 tx_flags |= TX_CMD_FLG_ACK_MSK;
416 if (ieee80211_is_mgmt(fc))
417 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
418 if (ieee80211_is_probe_resp(fc) &&
419 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
420 tx_flags |= TX_CMD_FLG_TSF_MSK;
421 } else {
422 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
423 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
424 }
425
426 tx_cmd->sta_id = std_id;
427 if (ieee80211_has_morefrags(fc))
428 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
429
430 if (ieee80211_is_data_qos(fc)) {
431 u8 *qc = ieee80211_get_qos_ctl(hdr);
432 tx_cmd->tid_tspec = qc[0] & 0xf;
433 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
434 } else {
435 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
436 }
437
438 priv->cfg->ops->utils->tx_cmd_protection(priv, info, fc, &tx_flags);
439
440 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
441 if (ieee80211_is_mgmt(fc)) {
442 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
443 tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(3);
444 else
445 tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(2);
446 } else {
447 tx_cmd->timeout.pm_frame_timeout = 0;
448 }
449
450 tx_cmd->driver_txop = 0;
451 tx_cmd->tx_flags = tx_flags;
452 tx_cmd->next_frame_len = 0;
453}
454
455/*
456 * start REPLY_TX command process
457 */
458static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
459{
460 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
461 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
462 struct iwl3945_tx_cmd *tx_cmd;
463 struct iwl_tx_queue *txq = NULL;
464 struct iwl_queue *q = NULL;
465 struct iwl_device_cmd *out_cmd;
466 struct iwl_cmd_meta *out_meta;
467 dma_addr_t phys_addr;
468 dma_addr_t txcmd_phys;
469 int txq_id = skb_get_queue_mapping(skb);
470 u16 len, idx, len_org, hdr_len; /* TODO: len_org is not used */
471 u8 id;
472 u8 unicast;
473 u8 sta_id;
474 u8 tid = 0;
475 __le16 fc;
476 u8 wait_write_ptr = 0;
477 unsigned long flags;
478
479 spin_lock_irqsave(&priv->lock, flags);
480 if (iwl_is_rfkill(priv)) {
481 IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n");
482 goto drop_unlock;
483 }
484
485 if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
486 IWL_ERR(priv, "ERROR: No TX rate available.\n");
487 goto drop_unlock;
488 }
489
490 unicast = !is_multicast_ether_addr(hdr->addr1);
491 id = 0;
492
493 fc = hdr->frame_control;
494
495#ifdef CONFIG_IWLWIFI_DEBUG
496 if (ieee80211_is_auth(fc))
497 IWL_DEBUG_TX(priv, "Sending AUTH frame\n");
498 else if (ieee80211_is_assoc_req(fc))
499 IWL_DEBUG_TX(priv, "Sending ASSOC frame\n");
500 else if (ieee80211_is_reassoc_req(fc))
501 IWL_DEBUG_TX(priv, "Sending REASSOC frame\n");
502#endif
503
504 spin_unlock_irqrestore(&priv->lock, flags);
505
506 hdr_len = ieee80211_hdrlen(fc);
507
508 /* Find index into station table for destination station */
509 sta_id = iwl_sta_id_or_broadcast(priv, info->control.sta);
510 if (sta_id == IWL_INVALID_STATION) {
511 IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n",
512 hdr->addr1);
513 goto drop;
514 }
515
516 IWL_DEBUG_RATE(priv, "station Id %d\n", sta_id);
517
518 if (ieee80211_is_data_qos(fc)) {
519 u8 *qc = ieee80211_get_qos_ctl(hdr);
520 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
521 if (unlikely(tid >= MAX_TID_COUNT))
522 goto drop;
523 }
524
525 /* Descriptor for chosen Tx queue */
526 txq = &priv->txq[txq_id];
527 q = &txq->q;
528
529 if ((iwl_queue_space(q) < q->high_mark))
530 goto drop;
531
532 spin_lock_irqsave(&priv->lock, flags);
533
534 idx = get_cmd_index(q, q->write_ptr, 0);
535
536 /* Set up driver data for this TFD */
537 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
538 txq->txb[q->write_ptr].skb = skb;
539
540 /* Init first empty entry in queue's array of Tx/cmd buffers */
541 out_cmd = txq->cmd[idx];
542 out_meta = &txq->meta[idx];
543 tx_cmd = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload;
544 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
545 memset(tx_cmd, 0, sizeof(*tx_cmd));
546
547 /*
548 * Set up the Tx-command (not MAC!) header.
549 * Store the chosen Tx queue and TFD index within the sequence field;
550 * after Tx, uCode's Tx response will return this value so driver can
551 * locate the frame within the tx queue and do post-tx processing.
552 */
553 out_cmd->hdr.cmd = REPLY_TX;
554 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
555 INDEX_TO_SEQ(q->write_ptr)));
556
557 /* Copy MAC header from skb into command buffer */
558 memcpy(tx_cmd->hdr, hdr, hdr_len);
559
560
561 if (info->control.hw_key)
562 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, sta_id);
563
564 /* TODO need this for burst mode later on */
565 iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id);
566
567 /* set is_hcca to 0; it probably will never be implemented */
568 iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
569
570 /* Total # bytes to be transmitted */
571 len = (u16)skb->len;
572 tx_cmd->len = cpu_to_le16(len);
573
574 iwl_dbg_log_tx_data_frame(priv, len, hdr);
575 iwl_update_stats(priv, true, fc, len);
576 tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
577 tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
578
579 if (!ieee80211_has_morefrags(hdr->frame_control)) {
580 txq->need_update = 1;
581 } else {
582 wait_write_ptr = 1;
583 txq->need_update = 0;
584 }
585
586 IWL_DEBUG_TX(priv, "sequence nr = 0X%x\n",
587 le16_to_cpu(out_cmd->hdr.sequence));
588 IWL_DEBUG_TX(priv, "tx_flags = 0X%x\n", le32_to_cpu(tx_cmd->tx_flags));
589 iwl_print_hex_dump(priv, IWL_DL_TX, tx_cmd, sizeof(*tx_cmd));
590 iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx_cmd->hdr,
591 ieee80211_hdrlen(fc));
592
593 /*
594 * Use the first empty entry in this queue's command buffer array
595 * to contain the Tx command and MAC header concatenated together
596 * (payload data will be in another buffer).
597 * Size of this varies, due to varying MAC header length.
598 * If end is not dword aligned, we'll have 2 extra bytes at the end
599 * of the MAC header (device reads on dword boundaries).
600 * We'll tell device about this padding later.
601 */
602 len = sizeof(struct iwl3945_tx_cmd) +
603 sizeof(struct iwl_cmd_header) + hdr_len;
604
605 len_org = len;
606 len = (len + 3) & ~3;
607
608 if (len_org != len)
609 len_org = 1;
610 else
611 len_org = 0;
612
613 /* Physical address of this Tx command's header (not MAC header!),
614 * within command buffer array. */
615 txcmd_phys = pci_map_single(priv->pci_dev, &out_cmd->hdr,
616 len, PCI_DMA_TODEVICE);
617 /* we do not map meta data ... so we can safely access address to
618 * provide to unmap command*/
619 dma_unmap_addr_set(out_meta, mapping, txcmd_phys);
620 dma_unmap_len_set(out_meta, len, len);
621
622 /* Add buffer containing Tx command and MAC(!) header to TFD's
623 * first entry */
624 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
625 txcmd_phys, len, 1, 0);
626
627
628 /* Set up TFD's 2nd entry to point directly to remainder of skb,
629 * if any (802.11 null frames have no payload). */
630 len = skb->len - hdr_len;
631 if (len) {
632 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
633 len, PCI_DMA_TODEVICE);
634 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
635 phys_addr, len,
636 0, U32_PAD(len));
637 }
638
639
640 /* Tell device the write index *just past* this latest filled TFD */
641 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
642 iwl_txq_update_write_ptr(priv, txq);
643 spin_unlock_irqrestore(&priv->lock, flags);
644
645 if ((iwl_queue_space(q) < q->high_mark)
646 && priv->mac80211_registered) {
647 if (wait_write_ptr) {
648 spin_lock_irqsave(&priv->lock, flags);
649 txq->need_update = 1;
650 iwl_txq_update_write_ptr(priv, txq);
651 spin_unlock_irqrestore(&priv->lock, flags);
652 }
653
654 iwl_stop_queue(priv, skb_get_queue_mapping(skb));
655 }
656
657 return 0;
658
659drop_unlock:
660 spin_unlock_irqrestore(&priv->lock, flags);
661drop:
662 return -1;
663}
664
665static int iwl3945_get_measurement(struct iwl_priv *priv,
666 struct ieee80211_measurement_params *params,
667 u8 type)
668{
669 struct iwl_spectrum_cmd spectrum;
670 struct iwl_rx_packet *pkt;
671 struct iwl_host_cmd cmd = {
672 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
673 .data = (void *)&spectrum,
674 .flags = CMD_WANT_SKB,
675 };
676 u32 add_time = le64_to_cpu(params->start_time);
677 int rc;
678 int spectrum_resp_status;
679 int duration = le16_to_cpu(params->duration);
680
681 if (iwl_is_associated(priv))
682 add_time = iwl_usecs_to_beacons(priv,
683 le64_to_cpu(params->start_time) - priv->_3945.last_tsf,
684 le16_to_cpu(priv->rxon_timing.beacon_interval));
685
686 memset(&spectrum, 0, sizeof(spectrum));
687
688 spectrum.channel_count = cpu_to_le16(1);
689 spectrum.flags =
690 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
691 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
692 cmd.len = sizeof(spectrum);
693 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
694
695 if (iwl_is_associated(priv))
696 spectrum.start_time =
697 iwl_add_beacon_time(priv,
698 priv->_3945.last_beacon_time, add_time,
699 le16_to_cpu(priv->rxon_timing.beacon_interval));
700 else
701 spectrum.start_time = 0;
702
703 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
704 spectrum.channels[0].channel = params->channel;
705 spectrum.channels[0].type = type;
706 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
707 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
708 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
709
710 rc = iwl_send_cmd_sync(priv, &cmd);
711 if (rc)
712 return rc;
713
714 pkt = (struct iwl_rx_packet *)cmd.reply_page;
715 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
716 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
717 rc = -EIO;
718 }
719
720 spectrum_resp_status = le16_to_cpu(pkt->u.spectrum.status);
721 switch (spectrum_resp_status) {
722 case 0: /* Command will be handled */
723 if (pkt->u.spectrum.id != 0xff) {
724 IWL_DEBUG_INFO(priv, "Replaced existing measurement: %d\n",
725 pkt->u.spectrum.id);
726 priv->measurement_status &= ~MEASUREMENT_READY;
727 }
728 priv->measurement_status |= MEASUREMENT_ACTIVE;
729 rc = 0;
730 break;
731
732 case 1: /* Command will not be handled */
733 rc = -EAGAIN;
734 break;
735 }
736
737 iwl_free_pages(priv, cmd.reply_page);
738
739 return rc;
740}
741
742static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
743 struct iwl_rx_mem_buffer *rxb)
744{
745 struct iwl_rx_packet *pkt = rxb_addr(rxb);
746 struct iwl_alive_resp *palive;
747 struct delayed_work *pwork;
748
749 palive = &pkt->u.alive_frame;
750
751 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
752 "0x%01X 0x%01X\n",
753 palive->is_valid, palive->ver_type,
754 palive->ver_subtype);
755
756 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
757 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
758 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
759 sizeof(struct iwl_alive_resp));
760 pwork = &priv->init_alive_start;
761 } else {
762 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
763 memcpy(&priv->card_alive, &pkt->u.alive_frame,
764 sizeof(struct iwl_alive_resp));
765 pwork = &priv->alive_start;
766 iwl3945_disable_events(priv);
767 }
768
769 /* We delay the ALIVE response by 5ms to
770 * give the HW RF Kill time to activate... */
771 if (palive->is_valid == UCODE_VALID_OK)
772 queue_delayed_work(priv->workqueue, pwork,
773 msecs_to_jiffies(5));
774 else
775 IWL_WARN(priv, "uCode did not respond OK.\n");
776}
777
778static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
779 struct iwl_rx_mem_buffer *rxb)
780{
781#ifdef CONFIG_IWLWIFI_DEBUG
782 struct iwl_rx_packet *pkt = rxb_addr(rxb);
783#endif
784
785 IWL_DEBUG_RX(priv, "Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
786}
787
788static void iwl3945_bg_beacon_update(struct work_struct *work)
789{
790 struct iwl_priv *priv =
791 container_of(work, struct iwl_priv, beacon_update);
792 struct sk_buff *beacon;
793
794 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
795 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
796
797 if (!beacon) {
798 IWL_ERR(priv, "update beacon failed\n");
799 return;
800 }
801
802 mutex_lock(&priv->mutex);
803 /* new beacon skb is allocated every time; dispose previous.*/
804 if (priv->ibss_beacon)
805 dev_kfree_skb(priv->ibss_beacon);
806
807 priv->ibss_beacon = beacon;
808 mutex_unlock(&priv->mutex);
809
810 iwl3945_send_beacon_cmd(priv);
811}
812
813static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
814 struct iwl_rx_mem_buffer *rxb)
815{
816#ifdef CONFIG_IWLWIFI_DEBUG
817 struct iwl_rx_packet *pkt = rxb_addr(rxb);
818 struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
819 u8 rate = beacon->beacon_notify_hdr.rate;
820
821 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
822 "tsf %d %d rate %d\n",
823 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
824 beacon->beacon_notify_hdr.failure_frame,
825 le32_to_cpu(beacon->ibss_mgr_status),
826 le32_to_cpu(beacon->high_tsf),
827 le32_to_cpu(beacon->low_tsf), rate);
828#endif
829
830 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
831 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
832 queue_work(priv->workqueue, &priv->beacon_update);
833}
834
835/* Handle notification from uCode that card's power state is changing
836 * due to software, hardware, or critical temperature RFKILL */
837static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
838 struct iwl_rx_mem_buffer *rxb)
839{
840 struct iwl_rx_packet *pkt = rxb_addr(rxb);
841 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
842 unsigned long status = priv->status;
843
844 IWL_WARN(priv, "Card state received: HW:%s SW:%s\n",
845 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
846 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
847
848 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
849 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
850
851 if (flags & HW_CARD_DISABLED)
852 set_bit(STATUS_RF_KILL_HW, &priv->status);
853 else
854 clear_bit(STATUS_RF_KILL_HW, &priv->status);
855
856
857 iwl_scan_cancel(priv);
858
859 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
860 test_bit(STATUS_RF_KILL_HW, &priv->status)))
861 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
862 test_bit(STATUS_RF_KILL_HW, &priv->status));
863 else
864 wake_up_interruptible(&priv->wait_command_queue);
865}
866
867/**
868 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
869 *
870 * Setup the RX handlers for each of the reply types sent from the uCode
871 * to the host.
872 *
873 * This function chains into the hardware specific files for them to setup
874 * any hardware specific handlers as well.
875 */
876static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
877{
878 priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
879 priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
880 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
881 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
882 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
883 iwl_rx_spectrum_measure_notif;
884 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
885 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
886 iwl_rx_pm_debug_statistics_notif;
887 priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
888
889 /*
890 * The same handler is used for both the REPLY to a discrete
891 * statistics request from the host as well as for the periodic
892 * statistics notifications (after received beacons) from the uCode.
893 */
894 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_reply_statistics;
895 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
896
897 iwl_setup_rx_scan_handlers(priv);
898 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
899
900 /* Set up hardware specific Rx handlers */
901 iwl3945_hw_rx_handler_setup(priv);
902}
903
904/************************** RX-FUNCTIONS ****************************/
905/*
906 * Rx theory of operation
907 *
908 * The host allocates 32 DMA target addresses and passes the host address
909 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
910 * 0 to 31
911 *
912 * Rx Queue Indexes
913 * The host/firmware share two index registers for managing the Rx buffers.
914 *
915 * The READ index maps to the first position that the firmware may be writing
916 * to -- the driver can read up to (but not including) this position and get
917 * good data.
918 * The READ index is managed by the firmware once the card is enabled.
919 *
920 * The WRITE index maps to the last position the driver has read from -- the
921 * position preceding WRITE is the last slot the firmware can place a packet.
922 *
923 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
924 * WRITE = READ.
925 *
926 * During initialization, the host sets up the READ queue position to the first
927 * INDEX position, and WRITE to the last (READ - 1 wrapped)
928 *
929 * When the firmware places a packet in a buffer, it will advance the READ index
930 * and fire the RX interrupt. The driver can then query the READ index and
931 * process as many packets as possible, moving the WRITE index forward as it
932 * resets the Rx queue buffers with new memory.
933 *
934 * The management in the driver is as follows:
935 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
936 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
937 * to replenish the iwl->rxq->rx_free.
938 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
939 * iwl->rxq is replenished and the READ INDEX is updated (updating the
940 * 'processed' and 'read' driver indexes as well)
941 * + A received packet is processed and handed to the kernel network stack,
942 * detached from the iwl->rxq. The driver 'processed' index is updated.
943 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
944 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
945 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
946 * were enough free buffers and RX_STALLED is set it is cleared.
947 *
948 *
949 * Driver sequence:
950 *
951 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
952 * iwl3945_rx_queue_restock
953 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
954 * queue, updates firmware pointers, and updates
955 * the WRITE index. If insufficient rx_free buffers
956 * are available, schedules iwl3945_rx_replenish
957 *
958 * -- enable interrupts --
959 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
960 * READ INDEX, detaching the SKB from the pool.
961 * Moves the packet buffer from queue to rx_used.
962 * Calls iwl3945_rx_queue_restock to refill any empty
963 * slots.
964 * ...
965 *
966 */
967
968/**
969 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
970 */
971static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
972 dma_addr_t dma_addr)
973{
974 return cpu_to_le32((u32)dma_addr);
975}
976
977/**
978 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
979 *
980 * If there are slots in the RX queue that need to be restocked,
981 * and we have free pre-allocated buffers, fill the ranks as much
982 * as we can, pulling from rx_free.
983 *
984 * This moves the 'write' index forward to catch up with 'processed', and
985 * also updates the memory address in the firmware to reference the new
986 * target buffer.
987 */
988static void iwl3945_rx_queue_restock(struct iwl_priv *priv)
989{
990 struct iwl_rx_queue *rxq = &priv->rxq;
991 struct list_head *element;
992 struct iwl_rx_mem_buffer *rxb;
993 unsigned long flags;
994 int write;
995
996 spin_lock_irqsave(&rxq->lock, flags);
997 write = rxq->write & ~0x7;
998 while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
999 /* Get next free Rx buffer, remove from free list */
1000 element = rxq->rx_free.next;
1001 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1002 list_del(element);
1003
1004 /* Point to Rx buffer via next RBD in circular buffer */
1005 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->page_dma);
1006 rxq->queue[rxq->write] = rxb;
1007 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
1008 rxq->free_count--;
1009 }
1010 spin_unlock_irqrestore(&rxq->lock, flags);
1011 /* If the pre-allocated buffer pool is dropping low, schedule to
1012 * refill it */
1013 if (rxq->free_count <= RX_LOW_WATERMARK)
1014 queue_work(priv->workqueue, &priv->rx_replenish);
1015
1016
1017 /* If we've added more space for the firmware to place data, tell it.
1018 * Increment device's write pointer in multiples of 8. */
1019 if ((rxq->write_actual != (rxq->write & ~0x7))
1020 || (abs(rxq->write - rxq->read) > 7)) {
1021 spin_lock_irqsave(&rxq->lock, flags);
1022 rxq->need_update = 1;
1023 spin_unlock_irqrestore(&rxq->lock, flags);
1024 iwl_rx_queue_update_write_ptr(priv, rxq);
1025 }
1026}
1027
1028/**
1029 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1030 *
1031 * When moving to rx_free an SKB is allocated for the slot.
1032 *
1033 * Also restock the Rx queue via iwl3945_rx_queue_restock.
1034 * This is called as a scheduled work item (except for during initialization)
1035 */
1036static void iwl3945_rx_allocate(struct iwl_priv *priv, gfp_t priority)
1037{
1038 struct iwl_rx_queue *rxq = &priv->rxq;
1039 struct list_head *element;
1040 struct iwl_rx_mem_buffer *rxb;
1041 struct page *page;
1042 unsigned long flags;
1043 gfp_t gfp_mask = priority;
1044
1045 while (1) {
1046 spin_lock_irqsave(&rxq->lock, flags);
1047
1048 if (list_empty(&rxq->rx_used)) {
1049 spin_unlock_irqrestore(&rxq->lock, flags);
1050 return;
1051 }
1052 spin_unlock_irqrestore(&rxq->lock, flags);
1053
1054 if (rxq->free_count > RX_LOW_WATERMARK)
1055 gfp_mask |= __GFP_NOWARN;
1056
1057 if (priv->hw_params.rx_page_order > 0)
1058 gfp_mask |= __GFP_COMP;
1059
1060 /* Alloc a new receive buffer */
1061 page = alloc_pages(gfp_mask, priv->hw_params.rx_page_order);
1062 if (!page) {
1063 if (net_ratelimit())
1064 IWL_DEBUG_INFO(priv, "Failed to allocate SKB buffer.\n");
1065 if ((rxq->free_count <= RX_LOW_WATERMARK) &&
1066 net_ratelimit())
1067 IWL_CRIT(priv, "Failed to allocate SKB buffer with %s. Only %u free buffers remaining.\n",
1068 priority == GFP_ATOMIC ? "GFP_ATOMIC" : "GFP_KERNEL",
1069 rxq->free_count);
1070 /* We don't reschedule replenish work here -- we will
1071 * call the restock method and if it still needs
1072 * more buffers it will schedule replenish */
1073 break;
1074 }
1075
1076 spin_lock_irqsave(&rxq->lock, flags);
1077 if (list_empty(&rxq->rx_used)) {
1078 spin_unlock_irqrestore(&rxq->lock, flags);
1079 __free_pages(page, priv->hw_params.rx_page_order);
1080 return;
1081 }
1082 element = rxq->rx_used.next;
1083 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1084 list_del(element);
1085 spin_unlock_irqrestore(&rxq->lock, flags);
1086
1087 rxb->page = page;
1088 /* Get physical address of RB/SKB */
1089 rxb->page_dma = pci_map_page(priv->pci_dev, page, 0,
1090 PAGE_SIZE << priv->hw_params.rx_page_order,
1091 PCI_DMA_FROMDEVICE);
1092
1093 spin_lock_irqsave(&rxq->lock, flags);
1094
1095 list_add_tail(&rxb->list, &rxq->rx_free);
1096 rxq->free_count++;
1097 priv->alloc_rxb_page++;
1098
1099 spin_unlock_irqrestore(&rxq->lock, flags);
1100 }
1101}
1102
1103void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1104{
1105 unsigned long flags;
1106 int i;
1107 spin_lock_irqsave(&rxq->lock, flags);
1108 INIT_LIST_HEAD(&rxq->rx_free);
1109 INIT_LIST_HEAD(&rxq->rx_used);
1110 /* Fill the rx_used queue with _all_ of the Rx buffers */
1111 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
1112 /* In the reset function, these buffers may have been allocated
1113 * to an SKB, so we need to unmap and free potential storage */
1114 if (rxq->pool[i].page != NULL) {
1115 pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
1116 PAGE_SIZE << priv->hw_params.rx_page_order,
1117 PCI_DMA_FROMDEVICE);
1118 __iwl_free_pages(priv, rxq->pool[i].page);
1119 rxq->pool[i].page = NULL;
1120 }
1121 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
1122 }
1123
1124 /* Set us so that we have processed and used all buffers, but have
1125 * not restocked the Rx queue with fresh buffers */
1126 rxq->read = rxq->write = 0;
1127 rxq->write_actual = 0;
1128 rxq->free_count = 0;
1129 spin_unlock_irqrestore(&rxq->lock, flags);
1130}
1131
1132void iwl3945_rx_replenish(void *data)
1133{
1134 struct iwl_priv *priv = data;
1135 unsigned long flags;
1136
1137 iwl3945_rx_allocate(priv, GFP_KERNEL);
1138
1139 spin_lock_irqsave(&priv->lock, flags);
1140 iwl3945_rx_queue_restock(priv);
1141 spin_unlock_irqrestore(&priv->lock, flags);
1142}
1143
1144static void iwl3945_rx_replenish_now(struct iwl_priv *priv)
1145{
1146 iwl3945_rx_allocate(priv, GFP_ATOMIC);
1147
1148 iwl3945_rx_queue_restock(priv);
1149}
1150
1151
1152/* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1153 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1154 * This free routine walks the list of POOL entries and if SKB is set to
1155 * non NULL it is unmapped and freed
1156 */
1157static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1158{
1159 int i;
1160 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
1161 if (rxq->pool[i].page != NULL) {
1162 pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
1163 PAGE_SIZE << priv->hw_params.rx_page_order,
1164 PCI_DMA_FROMDEVICE);
1165 __iwl_free_pages(priv, rxq->pool[i].page);
1166 rxq->pool[i].page = NULL;
1167 }
1168 }
1169
1170 dma_free_coherent(&priv->pci_dev->dev, 4 * RX_QUEUE_SIZE, rxq->bd,
1171 rxq->bd_dma);
1172 dma_free_coherent(&priv->pci_dev->dev, sizeof(struct iwl_rb_status),
1173 rxq->rb_stts, rxq->rb_stts_dma);
1174 rxq->bd = NULL;
1175 rxq->rb_stts = NULL;
1176}
1177
1178
1179/* Convert linear signal-to-noise ratio into dB */
1180static u8 ratio2dB[100] = {
1181/* 0 1 2 3 4 5 6 7 8 9 */
1182 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1183 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1184 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1185 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1186 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1187 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1188 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1189 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1190 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1191 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1192};
1193
1194/* Calculates a relative dB value from a ratio of linear
1195 * (i.e. not dB) signal levels.
1196 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1197int iwl3945_calc_db_from_ratio(int sig_ratio)
1198{
1199 /* 1000:1 or higher just report as 60 dB */
1200 if (sig_ratio >= 1000)
1201 return 60;
1202
1203 /* 100:1 or higher, divide by 10 and use table,
1204 * add 20 dB to make up for divide by 10 */
1205 if (sig_ratio >= 100)
1206 return 20 + (int)ratio2dB[sig_ratio/10];
1207
1208 /* We shouldn't see this */
1209 if (sig_ratio < 1)
1210 return 0;
1211
1212 /* Use table for ratios 1:1 - 99:1 */
1213 return (int)ratio2dB[sig_ratio];
1214}
1215
1216/**
1217 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1218 *
1219 * Uses the priv->rx_handlers callback function array to invoke
1220 * the appropriate handlers, including command responses,
1221 * frame-received notifications, and other notifications.
1222 */
1223static void iwl3945_rx_handle(struct iwl_priv *priv)
1224{
1225 struct iwl_rx_mem_buffer *rxb;
1226 struct iwl_rx_packet *pkt;
1227 struct iwl_rx_queue *rxq = &priv->rxq;
1228 u32 r, i;
1229 int reclaim;
1230 unsigned long flags;
1231 u8 fill_rx = 0;
1232 u32 count = 8;
1233 int total_empty = 0;
1234
1235 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1236 * buffer that the driver may process (last buffer filled by ucode). */
1237 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
1238 i = rxq->read;
1239
1240 /* calculate total frames need to be restock after handling RX */
1241 total_empty = r - rxq->write_actual;
1242 if (total_empty < 0)
1243 total_empty += RX_QUEUE_SIZE;
1244
1245 if (total_empty > (RX_QUEUE_SIZE / 2))
1246 fill_rx = 1;
1247 /* Rx interrupt, but nothing sent from uCode */
1248 if (i == r)
1249 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
1250
1251 while (i != r) {
1252 int len;
1253
1254 rxb = rxq->queue[i];
1255
1256 /* If an RXB doesn't have a Rx queue slot associated with it,
1257 * then a bug has been introduced in the queue refilling
1258 * routines -- catch it here */
1259 BUG_ON(rxb == NULL);
1260
1261 rxq->queue[i] = NULL;
1262
1263 pci_unmap_page(priv->pci_dev, rxb->page_dma,
1264 PAGE_SIZE << priv->hw_params.rx_page_order,
1265 PCI_DMA_FROMDEVICE);
1266 pkt = rxb_addr(rxb);
1267
1268 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
1269 len += sizeof(u32); /* account for status word */
1270 trace_iwlwifi_dev_rx(priv, pkt, len);
1271
1272 /* Reclaim a command buffer only if this packet is a response
1273 * to a (driver-originated) command.
1274 * If the packet (e.g. Rx frame) originated from uCode,
1275 * there is no command buffer to reclaim.
1276 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1277 * but apparently a few don't get set; catch them here. */
1278 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1279 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1280 (pkt->hdr.cmd != REPLY_TX);
1281
1282 /* Based on type of command response or notification,
1283 * handle those that need handling via function in
1284 * rx_handlers table. See iwl3945_setup_rx_handlers() */
1285 if (priv->rx_handlers[pkt->hdr.cmd]) {
1286 IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r, i,
1287 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1288 priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
1289 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1290 } else {
1291 /* No handling needed */
1292 IWL_DEBUG_RX(priv,
1293 "r %d i %d No handler needed for %s, 0x%02x\n",
1294 r, i, get_cmd_string(pkt->hdr.cmd),
1295 pkt->hdr.cmd);
1296 }
1297
1298 /*
1299 * XXX: After here, we should always check rxb->page
1300 * against NULL before touching it or its virtual
1301 * memory (pkt). Because some rx_handler might have
1302 * already taken or freed the pages.
1303 */
1304
1305 if (reclaim) {
1306 /* Invoke any callbacks, transfer the buffer to caller,
1307 * and fire off the (possibly) blocking iwl_send_cmd()
1308 * as we reclaim the driver command queue */
1309 if (rxb->page)
1310 iwl_tx_cmd_complete(priv, rxb);
1311 else
1312 IWL_WARN(priv, "Claim null rxb?\n");
1313 }
1314
1315 /* Reuse the page if possible. For notification packets and
1316 * SKBs that fail to Rx correctly, add them back into the
1317 * rx_free list for reuse later. */
1318 spin_lock_irqsave(&rxq->lock, flags);
1319 if (rxb->page != NULL) {
1320 rxb->page_dma = pci_map_page(priv->pci_dev, rxb->page,
1321 0, PAGE_SIZE << priv->hw_params.rx_page_order,
1322 PCI_DMA_FROMDEVICE);
1323 list_add_tail(&rxb->list, &rxq->rx_free);
1324 rxq->free_count++;
1325 } else
1326 list_add_tail(&rxb->list, &rxq->rx_used);
1327
1328 spin_unlock_irqrestore(&rxq->lock, flags);
1329
1330 i = (i + 1) & RX_QUEUE_MASK;
1331 /* If there are a lot of unused frames,
1332 * restock the Rx queue so ucode won't assert. */
1333 if (fill_rx) {
1334 count++;
1335 if (count >= 8) {
1336 rxq->read = i;
1337 iwl3945_rx_replenish_now(priv);
1338 count = 0;
1339 }
1340 }
1341 }
1342
1343 /* Backtrack one entry */
1344 rxq->read = i;
1345 if (fill_rx)
1346 iwl3945_rx_replenish_now(priv);
1347 else
1348 iwl3945_rx_queue_restock(priv);
1349}
1350
1351/* call this function to flush any scheduled tasklet */
1352static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1353{
1354 /* wait to make sure we flush pending tasklet*/
1355 synchronize_irq(priv->pci_dev->irq);
1356 tasklet_kill(&priv->irq_tasklet);
1357}
1358
1359static const char *desc_lookup(int i)
1360{
1361 switch (i) {
1362 case 1:
1363 return "FAIL";
1364 case 2:
1365 return "BAD_PARAM";
1366 case 3:
1367 return "BAD_CHECKSUM";
1368 case 4:
1369 return "NMI_INTERRUPT";
1370 case 5:
1371 return "SYSASSERT";
1372 case 6:
1373 return "FATAL_ERROR";
1374 }
1375
1376 return "UNKNOWN";
1377}
1378
1379#define ERROR_START_OFFSET (1 * sizeof(u32))
1380#define ERROR_ELEM_SIZE (7 * sizeof(u32))
1381
1382void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
1383{
1384 u32 i;
1385 u32 desc, time, count, base, data1;
1386 u32 blink1, blink2, ilink1, ilink2;
1387
1388 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1389
1390 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1391 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1392 return;
1393 }
1394
1395
1396 count = iwl_read_targ_mem(priv, base);
1397
1398 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1399 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1400 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1401 priv->status, count);
1402 }
1403
1404 IWL_ERR(priv, "Desc Time asrtPC blink2 "
1405 "ilink1 nmiPC Line\n");
1406 for (i = ERROR_START_OFFSET;
1407 i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
1408 i += ERROR_ELEM_SIZE) {
1409 desc = iwl_read_targ_mem(priv, base + i);
1410 time =
1411 iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
1412 blink1 =
1413 iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
1414 blink2 =
1415 iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
1416 ilink1 =
1417 iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
1418 ilink2 =
1419 iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
1420 data1 =
1421 iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
1422
1423 IWL_ERR(priv,
1424 "%-13s (0x%X) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1425 desc_lookup(desc), desc, time, blink1, blink2,
1426 ilink1, ilink2, data1);
1427 trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, 0,
1428 0, blink1, blink2, ilink1, ilink2);
1429 }
1430}
1431
1432#define EVENT_START_OFFSET (6 * sizeof(u32))
1433
1434/**
1435 * iwl3945_print_event_log - Dump error event log to syslog
1436 *
1437 */
1438static int iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
1439 u32 num_events, u32 mode,
1440 int pos, char **buf, size_t bufsz)
1441{
1442 u32 i;
1443 u32 base; /* SRAM byte address of event log header */
1444 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1445 u32 ptr; /* SRAM byte address of log data */
1446 u32 ev, time, data; /* event log data */
1447 unsigned long reg_flags;
1448
1449 if (num_events == 0)
1450 return pos;
1451
1452 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1453
1454 if (mode == 0)
1455 event_size = 2 * sizeof(u32);
1456 else
1457 event_size = 3 * sizeof(u32);
1458
1459 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1460
1461 /* Make sure device is powered up for SRAM reads */
1462 spin_lock_irqsave(&priv->reg_lock, reg_flags);
1463 iwl_grab_nic_access(priv);
1464
1465 /* Set starting address; reads will auto-increment */
1466 _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
1467 rmb();
1468
1469 /* "time" is actually "data" for mode 0 (no timestamp).
1470 * place event id # at far right for easier visual parsing. */
1471 for (i = 0; i < num_events; i++) {
1472 ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1473 time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1474 if (mode == 0) {
1475 /* data, ev */
1476 if (bufsz) {
1477 pos += scnprintf(*buf + pos, bufsz - pos,
1478 "0x%08x:%04u\n",
1479 time, ev);
1480 } else {
1481 IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
1482 trace_iwlwifi_dev_ucode_event(priv, 0,
1483 time, ev);
1484 }
1485 } else {
1486 data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1487 if (bufsz) {
1488 pos += scnprintf(*buf + pos, bufsz - pos,
1489 "%010u:0x%08x:%04u\n",
1490 time, data, ev);
1491 } else {
1492 IWL_ERR(priv, "%010u\t0x%08x\t%04u\n",
1493 time, data, ev);
1494 trace_iwlwifi_dev_ucode_event(priv, time,
1495 data, ev);
1496 }
1497 }
1498 }
1499
1500 /* Allow device to power down */
1501 iwl_release_nic_access(priv);
1502 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
1503 return pos;
1504}
1505
1506/**
1507 * iwl3945_print_last_event_logs - Dump the newest # of event log to syslog
1508 */
1509static int iwl3945_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1510 u32 num_wraps, u32 next_entry,
1511 u32 size, u32 mode,
1512 int pos, char **buf, size_t bufsz)
1513{
1514 /*
1515 * display the newest DEFAULT_LOG_ENTRIES entries
1516 * i.e the entries just before the next ont that uCode would fill.
1517 */
1518 if (num_wraps) {
1519 if (next_entry < size) {
1520 pos = iwl3945_print_event_log(priv,
1521 capacity - (size - next_entry),
1522 size - next_entry, mode,
1523 pos, buf, bufsz);
1524 pos = iwl3945_print_event_log(priv, 0,
1525 next_entry, mode,
1526 pos, buf, bufsz);
1527 } else
1528 pos = iwl3945_print_event_log(priv, next_entry - size,
1529 size, mode,
1530 pos, buf, bufsz);
1531 } else {
1532 if (next_entry < size)
1533 pos = iwl3945_print_event_log(priv, 0,
1534 next_entry, mode,
1535 pos, buf, bufsz);
1536 else
1537 pos = iwl3945_print_event_log(priv, next_entry - size,
1538 size, mode,
1539 pos, buf, bufsz);
1540 }
1541 return pos;
1542}
1543
1544#define DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES (20)
1545
1546int iwl3945_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1547 char **buf, bool display)
1548{
1549 u32 base; /* SRAM byte address of event log header */
1550 u32 capacity; /* event log capacity in # entries */
1551 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1552 u32 num_wraps; /* # times uCode wrapped to top of log */
1553 u32 next_entry; /* index of next entry to be written by uCode */
1554 u32 size; /* # entries that we'll print */
1555 int pos = 0;
1556 size_t bufsz = 0;
1557
1558 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1559 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1560 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1561 return -EINVAL;
1562 }
1563
1564 /* event log header */
1565 capacity = iwl_read_targ_mem(priv, base);
1566 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1567 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1568 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1569
1570 if (capacity > priv->cfg->max_event_log_size) {
1571 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
1572 capacity, priv->cfg->max_event_log_size);
1573 capacity = priv->cfg->max_event_log_size;
1574 }
1575
1576 if (next_entry > priv->cfg->max_event_log_size) {
1577 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1578 next_entry, priv->cfg->max_event_log_size);
1579 next_entry = priv->cfg->max_event_log_size;
1580 }
1581
1582 size = num_wraps ? capacity : next_entry;
1583
1584 /* bail out if nothing in log */
1585 if (size == 0) {
1586 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1587 return pos;
1588 }
1589
1590#ifdef CONFIG_IWLWIFI_DEBUG
1591 if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log)
1592 size = (size > DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES)
1593 ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES : size;
1594#else
1595 size = (size > DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES)
1596 ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES : size;
1597#endif
1598
1599 IWL_ERR(priv, "Start IWL Event Log Dump: display last %d count\n",
1600 size);
1601
1602#ifdef CONFIG_IWLWIFI_DEBUG
1603 if (display) {
1604 if (full_log)
1605 bufsz = capacity * 48;
1606 else
1607 bufsz = size * 48;
1608 *buf = kmalloc(bufsz, GFP_KERNEL);
1609 if (!*buf)
1610 return -ENOMEM;
1611 }
1612 if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
1613 /* if uCode has wrapped back to top of log,
1614 * start at the oldest entry,
1615 * i.e the next one that uCode would fill.
1616 */
1617 if (num_wraps)
1618 pos = iwl3945_print_event_log(priv, next_entry,
1619 capacity - next_entry, mode,
1620 pos, buf, bufsz);
1621
1622 /* (then/else) start at top of log */
1623 pos = iwl3945_print_event_log(priv, 0, next_entry, mode,
1624 pos, buf, bufsz);
1625 } else
1626 pos = iwl3945_print_last_event_logs(priv, capacity, num_wraps,
1627 next_entry, size, mode,
1628 pos, buf, bufsz);
1629#else
1630 pos = iwl3945_print_last_event_logs(priv, capacity, num_wraps,
1631 next_entry, size, mode,
1632 pos, buf, bufsz);
1633#endif
1634 return pos;
1635}
1636
1637static void iwl3945_irq_tasklet(struct iwl_priv *priv)
1638{
1639 u32 inta, handled = 0;
1640 u32 inta_fh;
1641 unsigned long flags;
1642#ifdef CONFIG_IWLWIFI_DEBUG
1643 u32 inta_mask;
1644#endif
1645
1646 spin_lock_irqsave(&priv->lock, flags);
1647
1648 /* Ack/clear/reset pending uCode interrupts.
1649 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1650 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1651 inta = iwl_read32(priv, CSR_INT);
1652 iwl_write32(priv, CSR_INT, inta);
1653
1654 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1655 * Any new interrupts that happen after this, either while we're
1656 * in this tasklet, or later, will show up in next ISR/tasklet. */
1657 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1658 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1659
1660#ifdef CONFIG_IWLWIFI_DEBUG
1661 if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1662 /* just for debug */
1663 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1664 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1665 inta, inta_mask, inta_fh);
1666 }
1667#endif
1668
1669 spin_unlock_irqrestore(&priv->lock, flags);
1670
1671 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1672 * atomic, make sure that inta covers all the interrupts that
1673 * we've discovered, even if FH interrupt came in just after
1674 * reading CSR_INT. */
1675 if (inta_fh & CSR39_FH_INT_RX_MASK)
1676 inta |= CSR_INT_BIT_FH_RX;
1677 if (inta_fh & CSR39_FH_INT_TX_MASK)
1678 inta |= CSR_INT_BIT_FH_TX;
1679
1680 /* Now service all interrupt bits discovered above. */
1681 if (inta & CSR_INT_BIT_HW_ERR) {
1682 IWL_ERR(priv, "Hardware error detected. Restarting.\n");
1683
1684 /* Tell the device to stop sending interrupts */
1685 iwl_disable_interrupts(priv);
1686
1687 priv->isr_stats.hw++;
1688 iwl_irq_handle_error(priv);
1689
1690 handled |= CSR_INT_BIT_HW_ERR;
1691
1692 return;
1693 }
1694
1695#ifdef CONFIG_IWLWIFI_DEBUG
1696 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1697 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1698 if (inta & CSR_INT_BIT_SCD) {
1699 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1700 "the frame/frames.\n");
1701 priv->isr_stats.sch++;
1702 }
1703
1704 /* Alive notification via Rx interrupt will do the real work */
1705 if (inta & CSR_INT_BIT_ALIVE) {
1706 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1707 priv->isr_stats.alive++;
1708 }
1709 }
1710#endif
1711 /* Safely ignore these bits for debug checks below */
1712 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1713
1714 /* Error detected by uCode */
1715 if (inta & CSR_INT_BIT_SW_ERR) {
1716 IWL_ERR(priv, "Microcode SW error detected. "
1717 "Restarting 0x%X.\n", inta);
1718 priv->isr_stats.sw++;
1719 priv->isr_stats.sw_err = inta;
1720 iwl_irq_handle_error(priv);
1721 handled |= CSR_INT_BIT_SW_ERR;
1722 }
1723
1724 /* uCode wakes up after power-down sleep */
1725 if (inta & CSR_INT_BIT_WAKEUP) {
1726 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1727 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1728 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1729 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1730 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1731 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1732 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1733 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1734
1735 priv->isr_stats.wakeup++;
1736 handled |= CSR_INT_BIT_WAKEUP;
1737 }
1738
1739 /* All uCode command responses, including Tx command responses,
1740 * Rx "responses" (frame-received notification), and other
1741 * notifications from uCode come through here*/
1742 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1743 iwl3945_rx_handle(priv);
1744 priv->isr_stats.rx++;
1745 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1746 }
1747
1748 if (inta & CSR_INT_BIT_FH_TX) {
1749 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1750 priv->isr_stats.tx++;
1751
1752 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
1753 iwl_write_direct32(priv, FH39_TCSR_CREDIT
1754 (FH39_SRVC_CHNL), 0x0);
1755 handled |= CSR_INT_BIT_FH_TX;
1756 }
1757
1758 if (inta & ~handled) {
1759 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1760 priv->isr_stats.unhandled++;
1761 }
1762
1763 if (inta & ~priv->inta_mask) {
1764 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1765 inta & ~priv->inta_mask);
1766 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
1767 }
1768
1769 /* Re-enable all interrupts */
1770 /* only Re-enable if disabled by irq */
1771 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1772 iwl_enable_interrupts(priv);
1773
1774#ifdef CONFIG_IWLWIFI_DEBUG
1775 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1776 inta = iwl_read32(priv, CSR_INT);
1777 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1778 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1779 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1780 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1781 }
1782#endif
1783}
1784
1785static int iwl3945_get_single_channel_for_scan(struct iwl_priv *priv,
1786 struct ieee80211_vif *vif,
1787 enum ieee80211_band band,
1788 struct iwl3945_scan_channel *scan_ch)
1789{
1790 const struct ieee80211_supported_band *sband;
1791 u16 passive_dwell = 0;
1792 u16 active_dwell = 0;
1793 int added = 0;
1794 u8 channel = 0;
1795
1796 sband = iwl_get_hw_mode(priv, band);
1797 if (!sband) {
1798 IWL_ERR(priv, "invalid band\n");
1799 return added;
1800 }
1801
1802 active_dwell = iwl_get_active_dwell_time(priv, band, 0);
1803 passive_dwell = iwl_get_passive_dwell_time(priv, band, vif);
1804
1805 if (passive_dwell <= active_dwell)
1806 passive_dwell = active_dwell + 1;
1807
1808
1809 channel = iwl_get_single_channel_number(priv, band);
1810
1811 if (channel) {
1812 scan_ch->channel = channel;
1813 scan_ch->type = 0; /* passive */
1814 scan_ch->active_dwell = cpu_to_le16(active_dwell);
1815 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
1816 /* Set txpower levels to defaults */
1817 scan_ch->tpc.dsp_atten = 110;
1818 if (band == IEEE80211_BAND_5GHZ)
1819 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
1820 else
1821 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
1822 added++;
1823 } else
1824 IWL_ERR(priv, "no valid channel found\n");
1825 return added;
1826}
1827
1828static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
1829 enum ieee80211_band band,
1830 u8 is_active, u8 n_probes,
1831 struct iwl3945_scan_channel *scan_ch,
1832 struct ieee80211_vif *vif)
1833{
1834 struct ieee80211_channel *chan;
1835 const struct ieee80211_supported_band *sband;
1836 const struct iwl_channel_info *ch_info;
1837 u16 passive_dwell = 0;
1838 u16 active_dwell = 0;
1839 int added, i;
1840
1841 sband = iwl_get_hw_mode(priv, band);
1842 if (!sband)
1843 return 0;
1844
1845 active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
1846 passive_dwell = iwl_get_passive_dwell_time(priv, band, vif);
1847
1848 if (passive_dwell <= active_dwell)
1849 passive_dwell = active_dwell + 1;
1850
1851 for (i = 0, added = 0; i < priv->scan_request->n_channels; i++) {
1852 chan = priv->scan_request->channels[i];
1853
1854 if (chan->band != band)
1855 continue;
1856
1857 scan_ch->channel = chan->hw_value;
1858
1859 ch_info = iwl_get_channel_info(priv, band, scan_ch->channel);
1860 if (!is_channel_valid(ch_info)) {
1861 IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n",
1862 scan_ch->channel);
1863 continue;
1864 }
1865
1866 scan_ch->active_dwell = cpu_to_le16(active_dwell);
1867 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
1868 /* If passive , set up for auto-switch
1869 * and use long active_dwell time.
1870 */
1871 if (!is_active || is_channel_passive(ch_info) ||
1872 (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
1873 scan_ch->type = 0; /* passive */
1874 if (IWL_UCODE_API(priv->ucode_ver) == 1)
1875 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
1876 } else {
1877 scan_ch->type = 1; /* active */
1878 }
1879
1880 /* Set direct probe bits. These may be used both for active
1881 * scan channels (probes gets sent right away),
1882 * or for passive channels (probes get se sent only after
1883 * hearing clear Rx packet).*/
1884 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
1885 if (n_probes)
1886 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1887 } else {
1888 /* uCode v1 does not allow setting direct probe bits on
1889 * passive channel. */
1890 if ((scan_ch->type & 1) && n_probes)
1891 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1892 }
1893
1894 /* Set txpower levels to defaults */
1895 scan_ch->tpc.dsp_atten = 110;
1896 /* scan_pwr_info->tpc.dsp_atten; */
1897
1898 /*scan_pwr_info->tpc.tx_gain; */
1899 if (band == IEEE80211_BAND_5GHZ)
1900 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
1901 else {
1902 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
1903 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
1904 * power level:
1905 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
1906 */
1907 }
1908
1909 IWL_DEBUG_SCAN(priv, "Scanning %d [%s %d]\n",
1910 scan_ch->channel,
1911 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
1912 (scan_ch->type & 1) ?
1913 active_dwell : passive_dwell);
1914
1915 scan_ch++;
1916 added++;
1917 }
1918
1919 IWL_DEBUG_SCAN(priv, "total channels to scan %d\n", added);
1920 return added;
1921}
1922
1923static void iwl3945_init_hw_rates(struct iwl_priv *priv,
1924 struct ieee80211_rate *rates)
1925{
1926 int i;
1927
1928 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
1929 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
1930 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1931 rates[i].hw_value_short = i;
1932 rates[i].flags = 0;
1933 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
1934 /*
1935 * If CCK != 1M then set short preamble rate flag.
1936 */
1937 rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
1938 0 : IEEE80211_RATE_SHORT_PREAMBLE;
1939 }
1940 }
1941}
1942
1943/******************************************************************************
1944 *
1945 * uCode download functions
1946 *
1947 ******************************************************************************/
1948
1949static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
1950{
1951 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1952 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1953 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1954 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1955 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1956 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1957}
1958
1959/**
1960 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
1961 * looking at all data.
1962 */
1963static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
1964{
1965 u32 val;
1966 u32 save_len = len;
1967 int rc = 0;
1968 u32 errcnt;
1969
1970 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1971
1972 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1973 IWL39_RTC_INST_LOWER_BOUND);
1974
1975 errcnt = 0;
1976 for (; len > 0; len -= sizeof(u32), image++) {
1977 /* read data comes through single port, auto-incr addr */
1978 /* NOTE: Use the debugless read so we don't flood kernel log
1979 * if IWL_DL_IO is set */
1980 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1981 if (val != le32_to_cpu(*image)) {
1982 IWL_ERR(priv, "uCode INST section is invalid at "
1983 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1984 save_len - len, val, le32_to_cpu(*image));
1985 rc = -EIO;
1986 errcnt++;
1987 if (errcnt >= 20)
1988 break;
1989 }
1990 }
1991
1992
1993 if (!errcnt)
1994 IWL_DEBUG_INFO(priv,
1995 "ucode image in INSTRUCTION memory is good\n");
1996
1997 return rc;
1998}
1999
2000
2001/**
2002 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
2003 * using sample data 100 bytes apart. If these sample points are good,
2004 * it's a pretty good bet that everything between them is good, too.
2005 */
2006static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
2007{
2008 u32 val;
2009 int rc = 0;
2010 u32 errcnt = 0;
2011 u32 i;
2012
2013 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2014
2015 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
2016 /* read data comes through single port, auto-incr addr */
2017 /* NOTE: Use the debugless read so we don't flood kernel log
2018 * if IWL_DL_IO is set */
2019 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2020 i + IWL39_RTC_INST_LOWER_BOUND);
2021 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2022 if (val != le32_to_cpu(*image)) {
2023#if 0 /* Enable this if you want to see details */
2024 IWL_ERR(priv, "uCode INST section is invalid at "
2025 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2026 i, val, *image);
2027#endif
2028 rc = -EIO;
2029 errcnt++;
2030 if (errcnt >= 3)
2031 break;
2032 }
2033 }
2034
2035 return rc;
2036}
2037
2038
2039/**
2040 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2041 * and verify its contents
2042 */
2043static int iwl3945_verify_ucode(struct iwl_priv *priv)
2044{
2045 __le32 *image;
2046 u32 len;
2047 int rc = 0;
2048
2049 /* Try bootstrap */
2050 image = (__le32 *)priv->ucode_boot.v_addr;
2051 len = priv->ucode_boot.len;
2052 rc = iwl3945_verify_inst_sparse(priv, image, len);
2053 if (rc == 0) {
2054 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2055 return 0;
2056 }
2057
2058 /* Try initialize */
2059 image = (__le32 *)priv->ucode_init.v_addr;
2060 len = priv->ucode_init.len;
2061 rc = iwl3945_verify_inst_sparse(priv, image, len);
2062 if (rc == 0) {
2063 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2064 return 0;
2065 }
2066
2067 /* Try runtime/protocol */
2068 image = (__le32 *)priv->ucode_code.v_addr;
2069 len = priv->ucode_code.len;
2070 rc = iwl3945_verify_inst_sparse(priv, image, len);
2071 if (rc == 0) {
2072 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2073 return 0;
2074 }
2075
2076 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2077
2078 /* Since nothing seems to match, show first several data entries in
2079 * instruction SRAM, so maybe visual inspection will give a clue.
2080 * Selection of bootstrap image (vs. other images) is arbitrary. */
2081 image = (__le32 *)priv->ucode_boot.v_addr;
2082 len = priv->ucode_boot.len;
2083 rc = iwl3945_verify_inst_full(priv, image, len);
2084
2085 return rc;
2086}
2087
2088static void iwl3945_nic_start(struct iwl_priv *priv)
2089{
2090 /* Remove all resets to allow NIC to operate */
2091 iwl_write32(priv, CSR_RESET, 0);
2092}
2093
2094#define IWL3945_UCODE_GET(item) \
2095static u32 iwl3945_ucode_get_##item(const struct iwl_ucode_header *ucode)\
2096{ \
2097 return le32_to_cpu(ucode->u.v1.item); \
2098}
2099
2100static u32 iwl3945_ucode_get_header_size(u32 api_ver)
2101{
2102 return 24;
2103}
2104
2105static u8 *iwl3945_ucode_get_data(const struct iwl_ucode_header *ucode)
2106{
2107 return (u8 *) ucode->u.v1.data;
2108}
2109
2110IWL3945_UCODE_GET(inst_size);
2111IWL3945_UCODE_GET(data_size);
2112IWL3945_UCODE_GET(init_size);
2113IWL3945_UCODE_GET(init_data_size);
2114IWL3945_UCODE_GET(boot_size);
2115
2116/**
2117 * iwl3945_read_ucode - Read uCode images from disk file.
2118 *
2119 * Copy into buffers for card to fetch via bus-mastering
2120 */
2121static int iwl3945_read_ucode(struct iwl_priv *priv)
2122{
2123 const struct iwl_ucode_header *ucode;
2124 int ret = -EINVAL, index;
2125 const struct firmware *ucode_raw;
2126 /* firmware file name contains uCode/driver compatibility version */
2127 const char *name_pre = priv->cfg->fw_name_pre;
2128 const unsigned int api_max = priv->cfg->ucode_api_max;
2129 const unsigned int api_min = priv->cfg->ucode_api_min;
2130 char buf[25];
2131 u8 *src;
2132 size_t len;
2133 u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
2134
2135 /* Ask kernel firmware_class module to get the boot firmware off disk.
2136 * request_firmware() is synchronous, file is in memory on return. */
2137 for (index = api_max; index >= api_min; index--) {
2138 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
2139 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
2140 if (ret < 0) {
2141 IWL_ERR(priv, "%s firmware file req failed: %d\n",
2142 buf, ret);
2143 if (ret == -ENOENT)
2144 continue;
2145 else
2146 goto error;
2147 } else {
2148 if (index < api_max)
2149 IWL_ERR(priv, "Loaded firmware %s, "
2150 "which is deprecated. "
2151 " Please use API v%u instead.\n",
2152 buf, api_max);
2153 IWL_DEBUG_INFO(priv, "Got firmware '%s' file "
2154 "(%zd bytes) from disk\n",
2155 buf, ucode_raw->size);
2156 break;
2157 }
2158 }
2159
2160 if (ret < 0)
2161 goto error;
2162
2163 /* Make sure that we got at least our header! */
2164 if (ucode_raw->size < iwl3945_ucode_get_header_size(1)) {
2165 IWL_ERR(priv, "File size way too small!\n");
2166 ret = -EINVAL;
2167 goto err_release;
2168 }
2169
2170 /* Data from ucode file: header followed by uCode images */
2171 ucode = (struct iwl_ucode_header *)ucode_raw->data;
2172
2173 priv->ucode_ver = le32_to_cpu(ucode->ver);
2174 api_ver = IWL_UCODE_API(priv->ucode_ver);
2175 inst_size = iwl3945_ucode_get_inst_size(ucode);
2176 data_size = iwl3945_ucode_get_data_size(ucode);
2177 init_size = iwl3945_ucode_get_init_size(ucode);
2178 init_data_size = iwl3945_ucode_get_init_data_size(ucode);
2179 boot_size = iwl3945_ucode_get_boot_size(ucode);
2180 src = iwl3945_ucode_get_data(ucode);
2181
2182 /* api_ver should match the api version forming part of the
2183 * firmware filename ... but we don't check for that and only rely
2184 * on the API version read from firmware header from here on forward */
2185
2186 if (api_ver < api_min || api_ver > api_max) {
2187 IWL_ERR(priv, "Driver unable to support your firmware API. "
2188 "Driver supports v%u, firmware is v%u.\n",
2189 api_max, api_ver);
2190 priv->ucode_ver = 0;
2191 ret = -EINVAL;
2192 goto err_release;
2193 }
2194 if (api_ver != api_max)
2195 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
2196 "got %u. New firmware can be obtained "
2197 "from http://www.intellinuxwireless.org.\n",
2198 api_max, api_ver);
2199
2200 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
2201 IWL_UCODE_MAJOR(priv->ucode_ver),
2202 IWL_UCODE_MINOR(priv->ucode_ver),
2203 IWL_UCODE_API(priv->ucode_ver),
2204 IWL_UCODE_SERIAL(priv->ucode_ver));
2205
2206 snprintf(priv->hw->wiphy->fw_version,
2207 sizeof(priv->hw->wiphy->fw_version),
2208 "%u.%u.%u.%u",
2209 IWL_UCODE_MAJOR(priv->ucode_ver),
2210 IWL_UCODE_MINOR(priv->ucode_ver),
2211 IWL_UCODE_API(priv->ucode_ver),
2212 IWL_UCODE_SERIAL(priv->ucode_ver));
2213
2214 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2215 priv->ucode_ver);
2216 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
2217 inst_size);
2218 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
2219 data_size);
2220 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
2221 init_size);
2222 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
2223 init_data_size);
2224 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
2225 boot_size);
2226
2227
2228 /* Verify size of file vs. image size info in file's header */
2229 if (ucode_raw->size != iwl3945_ucode_get_header_size(api_ver) +
2230 inst_size + data_size + init_size +
2231 init_data_size + boot_size) {
2232
2233 IWL_DEBUG_INFO(priv,
2234 "uCode file size %zd does not match expected size\n",
2235 ucode_raw->size);
2236 ret = -EINVAL;
2237 goto err_release;
2238 }
2239
2240 /* Verify that uCode images will fit in card's SRAM */
2241 if (inst_size > IWL39_MAX_INST_SIZE) {
2242 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
2243 inst_size);
2244 ret = -EINVAL;
2245 goto err_release;
2246 }
2247
2248 if (data_size > IWL39_MAX_DATA_SIZE) {
2249 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
2250 data_size);
2251 ret = -EINVAL;
2252 goto err_release;
2253 }
2254 if (init_size > IWL39_MAX_INST_SIZE) {
2255 IWL_DEBUG_INFO(priv,
2256 "uCode init instr len %d too large to fit in\n",
2257 init_size);
2258 ret = -EINVAL;
2259 goto err_release;
2260 }
2261 if (init_data_size > IWL39_MAX_DATA_SIZE) {
2262 IWL_DEBUG_INFO(priv,
2263 "uCode init data len %d too large to fit in\n",
2264 init_data_size);
2265 ret = -EINVAL;
2266 goto err_release;
2267 }
2268 if (boot_size > IWL39_MAX_BSM_SIZE) {
2269 IWL_DEBUG_INFO(priv,
2270 "uCode boot instr len %d too large to fit in\n",
2271 boot_size);
2272 ret = -EINVAL;
2273 goto err_release;
2274 }
2275
2276 /* Allocate ucode buffers for card's bus-master loading ... */
2277
2278 /* Runtime instructions and 2 copies of data:
2279 * 1) unmodified from disk
2280 * 2) backup cache for save/restore during power-downs */
2281 priv->ucode_code.len = inst_size;
2282 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2283
2284 priv->ucode_data.len = data_size;
2285 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2286
2287 priv->ucode_data_backup.len = data_size;
2288 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2289
2290 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2291 !priv->ucode_data_backup.v_addr)
2292 goto err_pci_alloc;
2293
2294 /* Initialization instructions and data */
2295 if (init_size && init_data_size) {
2296 priv->ucode_init.len = init_size;
2297 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2298
2299 priv->ucode_init_data.len = init_data_size;
2300 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2301
2302 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2303 goto err_pci_alloc;
2304 }
2305
2306 /* Bootstrap (instructions only, no data) */
2307 if (boot_size) {
2308 priv->ucode_boot.len = boot_size;
2309 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2310
2311 if (!priv->ucode_boot.v_addr)
2312 goto err_pci_alloc;
2313 }
2314
2315 /* Copy images into buffers for card's bus-master reads ... */
2316
2317 /* Runtime instructions (first block of data in file) */
2318 len = inst_size;
2319 IWL_DEBUG_INFO(priv,
2320 "Copying (but not loading) uCode instr len %zd\n", len);
2321 memcpy(priv->ucode_code.v_addr, src, len);
2322 src += len;
2323
2324 IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2325 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2326
2327 /* Runtime data (2nd block)
2328 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
2329 len = data_size;
2330 IWL_DEBUG_INFO(priv,
2331 "Copying (but not loading) uCode data len %zd\n", len);
2332 memcpy(priv->ucode_data.v_addr, src, len);
2333 memcpy(priv->ucode_data_backup.v_addr, src, len);
2334 src += len;
2335
2336 /* Initialization instructions (3rd block) */
2337 if (init_size) {
2338 len = init_size;
2339 IWL_DEBUG_INFO(priv,
2340 "Copying (but not loading) init instr len %zd\n", len);
2341 memcpy(priv->ucode_init.v_addr, src, len);
2342 src += len;
2343 }
2344
2345 /* Initialization data (4th block) */
2346 if (init_data_size) {
2347 len = init_data_size;
2348 IWL_DEBUG_INFO(priv,
2349 "Copying (but not loading) init data len %zd\n", len);
2350 memcpy(priv->ucode_init_data.v_addr, src, len);
2351 src += len;
2352 }
2353
2354 /* Bootstrap instructions (5th block) */
2355 len = boot_size;
2356 IWL_DEBUG_INFO(priv,
2357 "Copying (but not loading) boot instr len %zd\n", len);
2358 memcpy(priv->ucode_boot.v_addr, src, len);
2359
2360 /* We have our copies now, allow OS release its copies */
2361 release_firmware(ucode_raw);
2362 return 0;
2363
2364 err_pci_alloc:
2365 IWL_ERR(priv, "failed to allocate pci memory\n");
2366 ret = -ENOMEM;
2367 iwl3945_dealloc_ucode_pci(priv);
2368
2369 err_release:
2370 release_firmware(ucode_raw);
2371
2372 error:
2373 return ret;
2374}
2375
2376
2377/**
2378 * iwl3945_set_ucode_ptrs - Set uCode address location
2379 *
2380 * Tell initialization uCode where to find runtime uCode.
2381 *
2382 * BSM registers initially contain pointers to initialization uCode.
2383 * We need to replace them to load runtime uCode inst and data,
2384 * and to save runtime data when powering down.
2385 */
2386static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
2387{
2388 dma_addr_t pinst;
2389 dma_addr_t pdata;
2390
2391 /* bits 31:0 for 3945 */
2392 pinst = priv->ucode_code.p_addr;
2393 pdata = priv->ucode_data_backup.p_addr;
2394
2395 /* Tell bootstrap uCode where to find image to load */
2396 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2397 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2398 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
2399 priv->ucode_data.len);
2400
2401 /* Inst byte count must be last to set up, bit 31 signals uCode
2402 * that all new ptr/size info is in place */
2403 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
2404 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
2405
2406 IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
2407
2408 return 0;
2409}
2410
2411/**
2412 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2413 *
2414 * Called after REPLY_ALIVE notification received from "initialize" uCode.
2415 *
2416 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2417 */
2418static void iwl3945_init_alive_start(struct iwl_priv *priv)
2419{
2420 /* Check alive response for "valid" sign from uCode */
2421 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
2422 /* We had an error bringing up the hardware, so take it
2423 * all the way back down so we can try again */
2424 IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n");
2425 goto restart;
2426 }
2427
2428 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2429 * This is a paranoid check, because we would not have gotten the
2430 * "initialize" alive if code weren't properly loaded. */
2431 if (iwl3945_verify_ucode(priv)) {
2432 /* Runtime instruction load was bad;
2433 * take it all the way back down so we can try again */
2434 IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
2435 goto restart;
2436 }
2437
2438 /* Send pointers to protocol/runtime uCode image ... init code will
2439 * load and launch runtime uCode, which will send us another "Alive"
2440 * notification. */
2441 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
2442 if (iwl3945_set_ucode_ptrs(priv)) {
2443 /* Runtime instruction load won't happen;
2444 * take it all the way back down so we can try again */
2445 IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
2446 goto restart;
2447 }
2448 return;
2449
2450 restart:
2451 queue_work(priv->workqueue, &priv->restart);
2452}
2453
2454/**
2455 * iwl3945_alive_start - called after REPLY_ALIVE notification received
2456 * from protocol/runtime uCode (initialization uCode's
2457 * Alive gets handled by iwl3945_init_alive_start()).
2458 */
2459static void iwl3945_alive_start(struct iwl_priv *priv)
2460{
2461 int thermal_spin = 0;
2462 u32 rfkill;
2463
2464 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2465
2466 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2467 /* We had an error bringing up the hardware, so take it
2468 * all the way back down so we can try again */
2469 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2470 goto restart;
2471 }
2472
2473 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2474 * This is a paranoid check, because we would not have gotten the
2475 * "runtime" alive if code weren't properly loaded. */
2476 if (iwl3945_verify_ucode(priv)) {
2477 /* Runtime instruction load was bad;
2478 * take it all the way back down so we can try again */
2479 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2480 goto restart;
2481 }
2482
2483 rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
2484 IWL_DEBUG_INFO(priv, "RFKILL status: 0x%x\n", rfkill);
2485
2486 if (rfkill & 0x1) {
2487 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2488 /* if RFKILL is not on, then wait for thermal
2489 * sensor in adapter to kick in */
2490 while (iwl3945_hw_get_temperature(priv) == 0) {
2491 thermal_spin++;
2492 udelay(10);
2493 }
2494
2495 if (thermal_spin)
2496 IWL_DEBUG_INFO(priv, "Thermal calibration took %dus\n",
2497 thermal_spin * 10);
2498 } else
2499 set_bit(STATUS_RF_KILL_HW, &priv->status);
2500
2501 /* After the ALIVE response, we can send commands to 3945 uCode */
2502 set_bit(STATUS_ALIVE, &priv->status);
2503
2504 if (priv->cfg->ops->lib->recover_from_tx_stall) {
2505 /* Enable timer to monitor the driver queues */
2506 mod_timer(&priv->monitor_recover,
2507 jiffies +
2508 msecs_to_jiffies(priv->cfg->monitor_recover_period));
2509 }
2510
2511 if (iwl_is_rfkill(priv))
2512 return;
2513
2514 ieee80211_wake_queues(priv->hw);
2515
2516 priv->active_rate = IWL_RATES_MASK;
2517
2518 iwl_power_update_mode(priv, true);
2519
2520 if (iwl_is_associated(priv)) {
2521 struct iwl3945_rxon_cmd *active_rxon =
2522 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
2523
2524 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2525 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2526 } else {
2527 /* Initialize our rx_config data */
2528 iwl_connection_init_rx_config(priv, NULL);
2529 }
2530
2531 /* Configure Bluetooth device coexistence support */
2532 priv->cfg->ops->hcmd->send_bt_config(priv);
2533
2534 /* Configure the adapter for unassociated operation */
2535 iwlcore_commit_rxon(priv);
2536
2537 iwl3945_reg_txpower_periodic(priv);
2538
2539 iwl_leds_init(priv);
2540
2541 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2542 set_bit(STATUS_READY, &priv->status);
2543 wake_up_interruptible(&priv->wait_command_queue);
2544
2545 return;
2546
2547 restart:
2548 queue_work(priv->workqueue, &priv->restart);
2549}
2550
2551static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
2552
2553static void __iwl3945_down(struct iwl_priv *priv)
2554{
2555 unsigned long flags;
2556 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2557 struct ieee80211_conf *conf = NULL;
2558
2559 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2560
2561 conf = ieee80211_get_hw_conf(priv->hw);
2562
2563 if (!exit_pending)
2564 set_bit(STATUS_EXIT_PENDING, &priv->status);
2565
2566 /* Station information will now be cleared in device */
2567 iwl_clear_ucode_stations(priv);
2568 iwl_dealloc_bcast_station(priv);
2569 iwl_clear_driver_stations(priv);
2570
2571 /* Unblock any waiting calls */
2572 wake_up_interruptible_all(&priv->wait_command_queue);
2573
2574 /* Wipe out the EXIT_PENDING status bit if we are not actually
2575 * exiting the module */
2576 if (!exit_pending)
2577 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2578
2579 /* stop and reset the on-board processor */
2580 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2581
2582 /* tell the device to stop sending interrupts */
2583 spin_lock_irqsave(&priv->lock, flags);
2584 iwl_disable_interrupts(priv);
2585 spin_unlock_irqrestore(&priv->lock, flags);
2586 iwl_synchronize_irq(priv);
2587
2588 if (priv->mac80211_registered)
2589 ieee80211_stop_queues(priv->hw);
2590
2591 /* If we have not previously called iwl3945_init() then
2592 * clear all bits but the RF Kill bits and return */
2593 if (!iwl_is_init(priv)) {
2594 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2595 STATUS_RF_KILL_HW |
2596 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2597 STATUS_GEO_CONFIGURED |
2598 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2599 STATUS_EXIT_PENDING;
2600 goto exit;
2601 }
2602
2603 /* ...otherwise clear out all the status bits but the RF Kill
2604 * bit and continue taking the NIC down. */
2605 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2606 STATUS_RF_KILL_HW |
2607 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2608 STATUS_GEO_CONFIGURED |
2609 test_bit(STATUS_FW_ERROR, &priv->status) <<
2610 STATUS_FW_ERROR |
2611 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2612 STATUS_EXIT_PENDING;
2613
2614 iwl3945_hw_txq_ctx_stop(priv);
2615 iwl3945_hw_rxq_stop(priv);
2616
2617 /* Power-down device's busmaster DMA clocks */
2618 iwl_write_prph(priv, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT);
2619 udelay(5);
2620
2621 /* Stop the device, and put it in low power state */
2622 priv->cfg->ops->lib->apm_ops.stop(priv);
2623
2624 exit:
2625 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2626
2627 if (priv->ibss_beacon)
2628 dev_kfree_skb(priv->ibss_beacon);
2629 priv->ibss_beacon = NULL;
2630
2631 /* clear out any free frames */
2632 iwl3945_clear_free_frames(priv);
2633}
2634
2635static void iwl3945_down(struct iwl_priv *priv)
2636{
2637 mutex_lock(&priv->mutex);
2638 __iwl3945_down(priv);
2639 mutex_unlock(&priv->mutex);
2640
2641 iwl3945_cancel_deferred_work(priv);
2642}
2643
2644#define MAX_HW_RESTARTS 5
2645
2646static int __iwl3945_up(struct iwl_priv *priv)
2647{
2648 int rc, i;
2649
2650 rc = iwl_alloc_bcast_station(priv, false);
2651 if (rc)
2652 return rc;
2653
2654 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2655 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2656 return -EIO;
2657 }
2658
2659 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2660 IWL_ERR(priv, "ucode not available for device bring up\n");
2661 return -EIO;
2662 }
2663
2664 /* If platform's RF_KILL switch is NOT set to KILL */
2665 if (iwl_read32(priv, CSR_GP_CNTRL) &
2666 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2667 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2668 else {
2669 set_bit(STATUS_RF_KILL_HW, &priv->status);
2670 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2671 return -ENODEV;
2672 }
2673
2674 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2675
2676 rc = iwl3945_hw_nic_init(priv);
2677 if (rc) {
2678 IWL_ERR(priv, "Unable to int nic\n");
2679 return rc;
2680 }
2681
2682 /* make sure rfkill handshake bits are cleared */
2683 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2684 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2685 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2686
2687 /* clear (again), then enable host interrupts */
2688 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2689 iwl_enable_interrupts(priv);
2690
2691 /* really make sure rfkill handshake bits are cleared */
2692 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2693 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2694
2695 /* Copy original ucode data image from disk into backup cache.
2696 * This will be used to initialize the on-board processor's
2697 * data SRAM for a clean start when the runtime program first loads. */
2698 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2699 priv->ucode_data.len);
2700
2701 /* We return success when we resume from suspend and rf_kill is on. */
2702 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
2703 return 0;
2704
2705 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2706
2707 /* load bootstrap state machine,
2708 * load bootstrap program into processor's memory,
2709 * prepare to load the "initialize" uCode */
2710 rc = priv->cfg->ops->lib->load_ucode(priv);
2711
2712 if (rc) {
2713 IWL_ERR(priv,
2714 "Unable to set up bootstrap uCode: %d\n", rc);
2715 continue;
2716 }
2717
2718 /* start card; "initialize" will load runtime ucode */
2719 iwl3945_nic_start(priv);
2720
2721 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2722
2723 return 0;
2724 }
2725
2726 set_bit(STATUS_EXIT_PENDING, &priv->status);
2727 __iwl3945_down(priv);
2728 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2729
2730 /* tried to restart and config the device for as long as our
2731 * patience could withstand */
2732 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2733 return -EIO;
2734}
2735
2736
2737/*****************************************************************************
2738 *
2739 * Workqueue callbacks
2740 *
2741 *****************************************************************************/
2742
2743static void iwl3945_bg_init_alive_start(struct work_struct *data)
2744{
2745 struct iwl_priv *priv =
2746 container_of(data, struct iwl_priv, init_alive_start.work);
2747
2748 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2749 return;
2750
2751 mutex_lock(&priv->mutex);
2752 iwl3945_init_alive_start(priv);
2753 mutex_unlock(&priv->mutex);
2754}
2755
2756static void iwl3945_bg_alive_start(struct work_struct *data)
2757{
2758 struct iwl_priv *priv =
2759 container_of(data, struct iwl_priv, alive_start.work);
2760
2761 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2762 return;
2763
2764 mutex_lock(&priv->mutex);
2765 iwl3945_alive_start(priv);
2766 mutex_unlock(&priv->mutex);
2767}
2768
2769/*
2770 * 3945 cannot interrupt driver when hardware rf kill switch toggles;
2771 * driver must poll CSR_GP_CNTRL_REG register for change. This register
2772 * *is* readable even when device has been SW_RESET into low power mode
2773 * (e.g. during RF KILL).
2774 */
2775static void iwl3945_rfkill_poll(struct work_struct *data)
2776{
2777 struct iwl_priv *priv =
2778 container_of(data, struct iwl_priv, _3945.rfkill_poll.work);
2779 bool old_rfkill = test_bit(STATUS_RF_KILL_HW, &priv->status);
2780 bool new_rfkill = !(iwl_read32(priv, CSR_GP_CNTRL)
2781 & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW);
2782
2783 if (new_rfkill != old_rfkill) {
2784 if (new_rfkill)
2785 set_bit(STATUS_RF_KILL_HW, &priv->status);
2786 else
2787 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2788
2789 wiphy_rfkill_set_hw_state(priv->hw->wiphy, new_rfkill);
2790
2791 IWL_DEBUG_RF_KILL(priv, "RF_KILL bit toggled to %s.\n",
2792 new_rfkill ? "disable radio" : "enable radio");
2793 }
2794
2795 /* Keep this running, even if radio now enabled. This will be
2796 * cancelled in mac_start() if system decides to start again */
2797 queue_delayed_work(priv->workqueue, &priv->_3945.rfkill_poll,
2798 round_jiffies_relative(2 * HZ));
2799
2800}
2801
2802void iwl3945_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
2803{
2804 struct iwl_host_cmd cmd = {
2805 .id = REPLY_SCAN_CMD,
2806 .len = sizeof(struct iwl3945_scan_cmd),
2807 .flags = CMD_SIZE_HUGE,
2808 };
2809 struct iwl3945_scan_cmd *scan;
2810 struct ieee80211_conf *conf = NULL;
2811 u8 n_probes = 0;
2812 enum ieee80211_band band;
2813 bool is_active = false;
2814
2815 conf = ieee80211_get_hw_conf(priv->hw);
2816
2817 cancel_delayed_work(&priv->scan_check);
2818
2819 if (!iwl_is_ready(priv)) {
2820 IWL_WARN(priv, "request scan called when driver not ready.\n");
2821 goto done;
2822 }
2823
2824 /* Make sure the scan wasn't canceled before this queued work
2825 * was given the chance to run... */
2826 if (!test_bit(STATUS_SCANNING, &priv->status))
2827 goto done;
2828
2829 /* This should never be called or scheduled if there is currently
2830 * a scan active in the hardware. */
2831 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
2832 IWL_DEBUG_INFO(priv, "Multiple concurrent scan requests "
2833 "Ignoring second request.\n");
2834 goto done;
2835 }
2836
2837 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2838 IWL_DEBUG_SCAN(priv, "Aborting scan due to device shutdown\n");
2839 goto done;
2840 }
2841
2842 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2843 IWL_DEBUG_HC(priv,
2844 "Scan request while abort pending. Queuing.\n");
2845 goto done;
2846 }
2847
2848 if (iwl_is_rfkill(priv)) {
2849 IWL_DEBUG_HC(priv, "Aborting scan due to RF Kill activation\n");
2850 goto done;
2851 }
2852
2853 if (!test_bit(STATUS_READY, &priv->status)) {
2854 IWL_DEBUG_HC(priv,
2855 "Scan request while uninitialized. Queuing.\n");
2856 goto done;
2857 }
2858
2859 if (!priv->scan_cmd) {
2860 priv->scan_cmd = kmalloc(sizeof(struct iwl3945_scan_cmd) +
2861 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
2862 if (!priv->scan_cmd) {
2863 IWL_DEBUG_SCAN(priv, "Fail to allocate scan memory\n");
2864 goto done;
2865 }
2866 }
2867 scan = priv->scan_cmd;
2868 memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
2869
2870 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
2871 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
2872
2873 if (iwl_is_associated(priv)) {
2874 u16 interval = 0;
2875 u32 extra;
2876 u32 suspend_time = 100;
2877 u32 scan_suspend_time = 100;
2878 unsigned long flags;
2879
2880 IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
2881
2882 spin_lock_irqsave(&priv->lock, flags);
2883 if (priv->is_internal_short_scan)
2884 interval = 0;
2885 else
2886 interval = vif->bss_conf.beacon_int;
2887 spin_unlock_irqrestore(&priv->lock, flags);
2888
2889 scan->suspend_time = 0;
2890 scan->max_out_time = cpu_to_le32(200 * 1024);
2891 if (!interval)
2892 interval = suspend_time;
2893 /*
2894 * suspend time format:
2895 * 0-19: beacon interval in usec (time before exec.)
2896 * 20-23: 0
2897 * 24-31: number of beacons (suspend between channels)
2898 */
2899
2900 extra = (suspend_time / interval) << 24;
2901 scan_suspend_time = 0xFF0FFFFF &
2902 (extra | ((suspend_time % interval) * 1024));
2903
2904 scan->suspend_time = cpu_to_le32(scan_suspend_time);
2905 IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
2906 scan_suspend_time, interval);
2907 }
2908
2909 if (priv->is_internal_short_scan) {
2910 IWL_DEBUG_SCAN(priv, "Start internal passive scan.\n");
2911 } else if (priv->scan_request->n_ssids) {
2912 int i, p = 0;
2913 IWL_DEBUG_SCAN(priv, "Kicking off active scan\n");
2914 for (i = 0; i < priv->scan_request->n_ssids; i++) {
2915 /* always does wildcard anyway */
2916 if (!priv->scan_request->ssids[i].ssid_len)
2917 continue;
2918 scan->direct_scan[p].id = WLAN_EID_SSID;
2919 scan->direct_scan[p].len =
2920 priv->scan_request->ssids[i].ssid_len;
2921 memcpy(scan->direct_scan[p].ssid,
2922 priv->scan_request->ssids[i].ssid,
2923 priv->scan_request->ssids[i].ssid_len);
2924 n_probes++;
2925 p++;
2926 }
2927 is_active = true;
2928 } else
2929 IWL_DEBUG_SCAN(priv, "Kicking off passive scan.\n");
2930
2931 /* We don't build a direct scan probe request; the uCode will do
2932 * that based on the direct_mask added to each channel entry */
2933 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
2934 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
2935 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2936
2937 /* flags + rate selection */
2938
2939 switch (priv->scan_band) {
2940 case IEEE80211_BAND_2GHZ:
2941 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
2942 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
2943 scan->good_CRC_th = 0;
2944 band = IEEE80211_BAND_2GHZ;
2945 break;
2946 case IEEE80211_BAND_5GHZ:
2947 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
2948 /*
2949 * If active scaning is requested but a certain channel
2950 * is marked passive, we can do active scanning if we
2951 * detect transmissions.
2952 */
2953 scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH_DEFAULT :
2954 IWL_GOOD_CRC_TH_DISABLED;
2955 band = IEEE80211_BAND_5GHZ;
2956 break;
2957 default:
2958 IWL_WARN(priv, "Invalid scan band\n");
2959 goto done;
2960 }
2961
2962 if (!priv->is_internal_short_scan) {
2963 scan->tx_cmd.len = cpu_to_le16(
2964 iwl_fill_probe_req(priv,
2965 (struct ieee80211_mgmt *)scan->data,
2966 vif->addr,
2967 priv->scan_request->ie,
2968 priv->scan_request->ie_len,
2969 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
2970 } else {
2971 /* use bcast addr, will not be transmitted but must be valid */
2972 scan->tx_cmd.len = cpu_to_le16(
2973 iwl_fill_probe_req(priv,
2974 (struct ieee80211_mgmt *)scan->data,
2975 iwl_bcast_addr, NULL, 0,
2976 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
2977 }
2978 /* select Rx antennas */
2979 scan->flags |= iwl3945_get_antenna_flags(priv);
2980
2981 if (priv->is_internal_short_scan) {
2982 scan->channel_count =
2983 iwl3945_get_single_channel_for_scan(priv, vif, band,
2984 (void *)&scan->data[le16_to_cpu(
2985 scan->tx_cmd.len)]);
2986 } else {
2987 scan->channel_count =
2988 iwl3945_get_channels_for_scan(priv, band, is_active, n_probes,
2989 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)], vif);
2990 }
2991
2992 if (scan->channel_count == 0) {
2993 IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
2994 goto done;
2995 }
2996
2997 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
2998 scan->channel_count * sizeof(struct iwl3945_scan_channel);
2999 cmd.data = scan;
3000 scan->len = cpu_to_le16(cmd.len);
3001
3002 set_bit(STATUS_SCAN_HW, &priv->status);
3003 if (iwl_send_cmd_sync(priv, &cmd))
3004 goto done;
3005
3006 queue_delayed_work(priv->workqueue, &priv->scan_check,
3007 IWL_SCAN_CHECK_WATCHDOG);
3008
3009 return;
3010
3011 done:
3012 /* can not perform scan make sure we clear scanning
3013 * bits from status so next scan request can be performed.
3014 * if we dont clear scanning status bit here all next scan
3015 * will fail
3016 */
3017 clear_bit(STATUS_SCAN_HW, &priv->status);
3018 clear_bit(STATUS_SCANNING, &priv->status);
3019
3020 /* inform mac80211 scan aborted */
3021 queue_work(priv->workqueue, &priv->abort_scan);
3022}
3023
3024static void iwl3945_bg_restart(struct work_struct *data)
3025{
3026 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3027
3028 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3029 return;
3030
3031 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
3032 mutex_lock(&priv->mutex);
3033 priv->vif = NULL;
3034 priv->is_open = 0;
3035 mutex_unlock(&priv->mutex);
3036 iwl3945_down(priv);
3037 ieee80211_restart_hw(priv->hw);
3038 } else {
3039 iwl3945_down(priv);
3040
3041 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3042 return;
3043
3044 mutex_lock(&priv->mutex);
3045 __iwl3945_up(priv);
3046 mutex_unlock(&priv->mutex);
3047 }
3048}
3049
3050static void iwl3945_bg_rx_replenish(struct work_struct *data)
3051{
3052 struct iwl_priv *priv =
3053 container_of(data, struct iwl_priv, rx_replenish);
3054
3055 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3056 return;
3057
3058 mutex_lock(&priv->mutex);
3059 iwl3945_rx_replenish(priv);
3060 mutex_unlock(&priv->mutex);
3061}
3062
3063void iwl3945_post_associate(struct iwl_priv *priv, struct ieee80211_vif *vif)
3064{
3065 int rc = 0;
3066 struct ieee80211_conf *conf = NULL;
3067
3068 if (!vif || !priv->is_open)
3069 return;
3070
3071 if (vif->type == NL80211_IFTYPE_AP) {
3072 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
3073 return;
3074 }
3075
3076 IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3077 vif->bss_conf.aid, priv->active_rxon.bssid_addr);
3078
3079 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3080 return;
3081
3082 iwl_scan_cancel_timeout(priv, 200);
3083
3084 conf = ieee80211_get_hw_conf(priv->hw);
3085
3086 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3087 iwlcore_commit_rxon(priv);
3088
3089 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3090 iwl_setup_rxon_timing(priv, vif);
3091 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3092 sizeof(priv->rxon_timing), &priv->rxon_timing);
3093 if (rc)
3094 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3095 "Attempting to continue.\n");
3096
3097 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3098
3099 priv->staging_rxon.assoc_id = cpu_to_le16(vif->bss_conf.aid);
3100
3101 IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3102 vif->bss_conf.aid, vif->bss_conf.beacon_int);
3103
3104 if (vif->bss_conf.use_short_preamble)
3105 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3106 else
3107 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3108
3109 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3110 if (vif->bss_conf.use_short_slot)
3111 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3112 else
3113 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3114 }
3115
3116 iwlcore_commit_rxon(priv);
3117
3118 switch (vif->type) {
3119 case NL80211_IFTYPE_STATION:
3120 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
3121 break;
3122 case NL80211_IFTYPE_ADHOC:
3123 iwl3945_send_beacon_cmd(priv);
3124 break;
3125 default:
3126 IWL_ERR(priv, "%s Should not be called in %d mode\n",
3127 __func__, vif->type);
3128 break;
3129 }
3130}
3131
3132/*****************************************************************************
3133 *
3134 * mac80211 entry point functions
3135 *
3136 *****************************************************************************/
3137
3138#define UCODE_READY_TIMEOUT (2 * HZ)
3139
3140static int iwl3945_mac_start(struct ieee80211_hw *hw)
3141{
3142 struct iwl_priv *priv = hw->priv;
3143 int ret;
3144
3145 IWL_DEBUG_MAC80211(priv, "enter\n");
3146
3147 /* we should be verifying the device is ready to be opened */
3148 mutex_lock(&priv->mutex);
3149
3150 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3151 * ucode filename and max sizes are card-specific. */
3152
3153 if (!priv->ucode_code.len) {
3154 ret = iwl3945_read_ucode(priv);
3155 if (ret) {
3156 IWL_ERR(priv, "Could not read microcode: %d\n", ret);
3157 mutex_unlock(&priv->mutex);
3158 goto out_release_irq;
3159 }
3160 }
3161
3162 ret = __iwl3945_up(priv);
3163
3164 mutex_unlock(&priv->mutex);
3165
3166 if (ret)
3167 goto out_release_irq;
3168
3169 IWL_DEBUG_INFO(priv, "Start UP work.\n");
3170
3171 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3172 * mac80211 will not be run successfully. */
3173 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3174 test_bit(STATUS_READY, &priv->status),
3175 UCODE_READY_TIMEOUT);
3176 if (!ret) {
3177 if (!test_bit(STATUS_READY, &priv->status)) {
3178 IWL_ERR(priv,
3179 "Wait for START_ALIVE timeout after %dms.\n",
3180 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3181 ret = -ETIMEDOUT;
3182 goto out_release_irq;
3183 }
3184 }
3185
3186 /* ucode is running and will send rfkill notifications,
3187 * no need to poll the killswitch state anymore */
3188 cancel_delayed_work(&priv->_3945.rfkill_poll);
3189
3190 iwl_led_start(priv);
3191
3192 priv->is_open = 1;
3193 IWL_DEBUG_MAC80211(priv, "leave\n");
3194 return 0;
3195
3196out_release_irq:
3197 priv->is_open = 0;
3198 IWL_DEBUG_MAC80211(priv, "leave - failed\n");
3199 return ret;
3200}
3201
3202static void iwl3945_mac_stop(struct ieee80211_hw *hw)
3203{
3204 struct iwl_priv *priv = hw->priv;
3205
3206 IWL_DEBUG_MAC80211(priv, "enter\n");
3207
3208 if (!priv->is_open) {
3209 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
3210 return;
3211 }
3212
3213 priv->is_open = 0;
3214
3215 if (iwl_is_ready_rf(priv)) {
3216 /* stop mac, cancel any scan request and clear
3217 * RXON_FILTER_ASSOC_MSK BIT
3218 */
3219 mutex_lock(&priv->mutex);
3220 iwl_scan_cancel_timeout(priv, 100);
3221 mutex_unlock(&priv->mutex);
3222 }
3223
3224 iwl3945_down(priv);
3225
3226 flush_workqueue(priv->workqueue);
3227
3228 /* start polling the killswitch state again */
3229 queue_delayed_work(priv->workqueue, &priv->_3945.rfkill_poll,
3230 round_jiffies_relative(2 * HZ));
3231
3232 IWL_DEBUG_MAC80211(priv, "leave\n");
3233}
3234
3235static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3236{
3237 struct iwl_priv *priv = hw->priv;
3238
3239 IWL_DEBUG_MAC80211(priv, "enter\n");
3240
3241 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3242 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3243
3244 if (iwl3945_tx_skb(priv, skb))
3245 dev_kfree_skb_any(skb);
3246
3247 IWL_DEBUG_MAC80211(priv, "leave\n");
3248 return NETDEV_TX_OK;
3249}
3250
3251void iwl3945_config_ap(struct iwl_priv *priv, struct ieee80211_vif *vif)
3252{
3253 int rc = 0;
3254
3255 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3256 return;
3257
3258 /* The following should be done only at AP bring up */
3259 if (!(iwl_is_associated(priv))) {
3260
3261 /* RXON - unassoc (to set timing command) */
3262 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3263 iwlcore_commit_rxon(priv);
3264
3265 /* RXON Timing */
3266 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3267 iwl_setup_rxon_timing(priv, vif);
3268 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3269 sizeof(priv->rxon_timing),
3270 &priv->rxon_timing);
3271 if (rc)
3272 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3273 "Attempting to continue.\n");
3274
3275 priv->staging_rxon.assoc_id = 0;
3276
3277 if (vif->bss_conf.use_short_preamble)
3278 priv->staging_rxon.flags |=
3279 RXON_FLG_SHORT_PREAMBLE_MSK;
3280 else
3281 priv->staging_rxon.flags &=
3282 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3283
3284 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3285 if (vif->bss_conf.use_short_slot)
3286 priv->staging_rxon.flags |=
3287 RXON_FLG_SHORT_SLOT_MSK;
3288 else
3289 priv->staging_rxon.flags &=
3290 ~RXON_FLG_SHORT_SLOT_MSK;
3291 }
3292 /* restore RXON assoc */
3293 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3294 iwlcore_commit_rxon(priv);
3295 }
3296 iwl3945_send_beacon_cmd(priv);
3297
3298 /* FIXME - we need to add code here to detect a totally new
3299 * configuration, reset the AP, unassoc, rxon timing, assoc,
3300 * clear sta table, add BCAST sta... */
3301}
3302
3303static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3304 struct ieee80211_vif *vif,
3305 struct ieee80211_sta *sta,
3306 struct ieee80211_key_conf *key)
3307{
3308 struct iwl_priv *priv = hw->priv;
3309 int ret = 0;
3310 u8 sta_id = IWL_INVALID_STATION;
3311 u8 static_key;
3312
3313 IWL_DEBUG_MAC80211(priv, "enter\n");
3314
3315 if (iwl3945_mod_params.sw_crypto) {
3316 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
3317 return -EOPNOTSUPP;
3318 }
3319
3320 static_key = !iwl_is_associated(priv);
3321
3322 if (!static_key) {
3323 sta_id = iwl_sta_id_or_broadcast(priv, sta);
3324 if (sta_id == IWL_INVALID_STATION)
3325 return -EINVAL;
3326 }
3327
3328 mutex_lock(&priv->mutex);
3329 iwl_scan_cancel_timeout(priv, 100);
3330
3331 switch (cmd) {
3332 case SET_KEY:
3333 if (static_key)
3334 ret = iwl3945_set_static_key(priv, key);
3335 else
3336 ret = iwl3945_set_dynamic_key(priv, key, sta_id);
3337 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
3338 break;
3339 case DISABLE_KEY:
3340 if (static_key)
3341 ret = iwl3945_remove_static_key(priv);
3342 else
3343 ret = iwl3945_clear_sta_key_info(priv, sta_id);
3344 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
3345 break;
3346 default:
3347 ret = -EINVAL;
3348 }
3349
3350 mutex_unlock(&priv->mutex);
3351 IWL_DEBUG_MAC80211(priv, "leave\n");
3352
3353 return ret;
3354}
3355
3356static int iwl3945_mac_sta_add(struct ieee80211_hw *hw,
3357 struct ieee80211_vif *vif,
3358 struct ieee80211_sta *sta)
3359{
3360 struct iwl_priv *priv = hw->priv;
3361 struct iwl3945_sta_priv *sta_priv = (void *)sta->drv_priv;
3362 int ret;
3363 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
3364 u8 sta_id;
3365
3366 IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
3367 sta->addr);
3368 mutex_lock(&priv->mutex);
3369 IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
3370 sta->addr);
3371 sta_priv->common.sta_id = IWL_INVALID_STATION;
3372
3373
3374 ret = iwl_add_station_common(priv, sta->addr, is_ap, &sta->ht_cap,
3375 &sta_id);
3376 if (ret) {
3377 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
3378 sta->addr, ret);
3379 /* Should we return success if return code is EEXIST ? */
3380 mutex_unlock(&priv->mutex);
3381 return ret;
3382 }
3383
3384 sta_priv->common.sta_id = sta_id;
3385
3386 /* Initialize rate scaling */
3387 IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
3388 sta->addr);
3389 iwl3945_rs_rate_init(priv, sta, sta_id);
3390 mutex_unlock(&priv->mutex);
3391
3392 return 0;
3393}
3394
3395static void iwl3945_configure_filter(struct ieee80211_hw *hw,
3396 unsigned int changed_flags,
3397 unsigned int *total_flags,
3398 u64 multicast)
3399{
3400 struct iwl_priv *priv = hw->priv;
3401 __le32 filter_or = 0, filter_nand = 0;
3402
3403#define CHK(test, flag) do { \
3404 if (*total_flags & (test)) \
3405 filter_or |= (flag); \
3406 else \
3407 filter_nand |= (flag); \
3408 } while (0)
3409
3410 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
3411 changed_flags, *total_flags);
3412
3413 CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
3414 CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK);
3415 CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
3416
3417#undef CHK
3418
3419 mutex_lock(&priv->mutex);
3420
3421 priv->staging_rxon.filter_flags &= ~filter_nand;
3422 priv->staging_rxon.filter_flags |= filter_or;
3423
3424 /*
3425 * Committing directly here breaks for some reason,
3426 * but we'll eventually commit the filter flags
3427 * change anyway.
3428 */
3429
3430 mutex_unlock(&priv->mutex);
3431
3432 /*
3433 * Receiving all multicast frames is always enabled by the
3434 * default flags setup in iwl_connection_init_rx_config()
3435 * since we currently do not support programming multicast
3436 * filters into the device.
3437 */
3438 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
3439 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3440}
3441
3442
3443/*****************************************************************************
3444 *
3445 * sysfs attributes
3446 *
3447 *****************************************************************************/
3448
3449#ifdef CONFIG_IWLWIFI_DEBUG
3450
3451/*
3452 * The following adds a new attribute to the sysfs representation
3453 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3454 * used for controlling the debug level.
3455 *
3456 * See the level definitions in iwl for details.
3457 *
3458 * The debug_level being managed using sysfs below is a per device debug
3459 * level that is used instead of the global debug level if it (the per
3460 * device debug level) is set.
3461 */
3462static ssize_t show_debug_level(struct device *d,
3463 struct device_attribute *attr, char *buf)
3464{
3465 struct iwl_priv *priv = dev_get_drvdata(d);
3466 return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
3467}
3468static ssize_t store_debug_level(struct device *d,
3469 struct device_attribute *attr,
3470 const char *buf, size_t count)
3471{
3472 struct iwl_priv *priv = dev_get_drvdata(d);
3473 unsigned long val;
3474 int ret;
3475
3476 ret = strict_strtoul(buf, 0, &val);
3477 if (ret)
3478 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
3479 else {
3480 priv->debug_level = val;
3481 if (iwl_alloc_traffic_mem(priv))
3482 IWL_ERR(priv,
3483 "Not enough memory to generate traffic log\n");
3484 }
3485 return strnlen(buf, count);
3486}
3487
3488static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3489 show_debug_level, store_debug_level);
3490
3491#endif /* CONFIG_IWLWIFI_DEBUG */
3492
3493static ssize_t show_temperature(struct device *d,
3494 struct device_attribute *attr, char *buf)
3495{
3496 struct iwl_priv *priv = dev_get_drvdata(d);
3497
3498 if (!iwl_is_alive(priv))
3499 return -EAGAIN;
3500
3501 return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
3502}
3503
3504static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3505
3506static ssize_t show_tx_power(struct device *d,
3507 struct device_attribute *attr, char *buf)
3508{
3509 struct iwl_priv *priv = dev_get_drvdata(d);
3510 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3511}
3512
3513static ssize_t store_tx_power(struct device *d,
3514 struct device_attribute *attr,
3515 const char *buf, size_t count)
3516{
3517 struct iwl_priv *priv = dev_get_drvdata(d);
3518 char *p = (char *)buf;
3519 u32 val;
3520
3521 val = simple_strtoul(p, &p, 10);
3522 if (p == buf)
3523 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
3524 else
3525 iwl3945_hw_reg_set_txpower(priv, val);
3526
3527 return count;
3528}
3529
3530static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3531
3532static ssize_t show_flags(struct device *d,
3533 struct device_attribute *attr, char *buf)
3534{
3535 struct iwl_priv *priv = dev_get_drvdata(d);
3536
3537 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3538}
3539
3540static ssize_t store_flags(struct device *d,
3541 struct device_attribute *attr,
3542 const char *buf, size_t count)
3543{
3544 struct iwl_priv *priv = dev_get_drvdata(d);
3545 u32 flags = simple_strtoul(buf, NULL, 0);
3546
3547 mutex_lock(&priv->mutex);
3548 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3549 /* Cancel any currently running scans... */
3550 if (iwl_scan_cancel_timeout(priv, 100))
3551 IWL_WARN(priv, "Could not cancel scan.\n");
3552 else {
3553 IWL_DEBUG_INFO(priv, "Committing rxon.flags = 0x%04X\n",
3554 flags);
3555 priv->staging_rxon.flags = cpu_to_le32(flags);
3556 iwlcore_commit_rxon(priv);
3557 }
3558 }
3559 mutex_unlock(&priv->mutex);
3560
3561 return count;
3562}
3563
3564static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3565
3566static ssize_t show_filter_flags(struct device *d,
3567 struct device_attribute *attr, char *buf)
3568{
3569 struct iwl_priv *priv = dev_get_drvdata(d);
3570
3571 return sprintf(buf, "0x%04X\n",
3572 le32_to_cpu(priv->active_rxon.filter_flags));
3573}
3574
3575static ssize_t store_filter_flags(struct device *d,
3576 struct device_attribute *attr,
3577 const char *buf, size_t count)
3578{
3579 struct iwl_priv *priv = dev_get_drvdata(d);
3580 u32 filter_flags = simple_strtoul(buf, NULL, 0);
3581
3582 mutex_lock(&priv->mutex);
3583 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3584 /* Cancel any currently running scans... */
3585 if (iwl_scan_cancel_timeout(priv, 100))
3586 IWL_WARN(priv, "Could not cancel scan.\n");
3587 else {
3588 IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
3589 "0x%04X\n", filter_flags);
3590 priv->staging_rxon.filter_flags =
3591 cpu_to_le32(filter_flags);
3592 iwlcore_commit_rxon(priv);
3593 }
3594 }
3595 mutex_unlock(&priv->mutex);
3596
3597 return count;
3598}
3599
3600static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3601 store_filter_flags);
3602
3603static ssize_t show_measurement(struct device *d,
3604 struct device_attribute *attr, char *buf)
3605{
3606 struct iwl_priv *priv = dev_get_drvdata(d);
3607 struct iwl_spectrum_notification measure_report;
3608 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3609 u8 *data = (u8 *)&measure_report;
3610 unsigned long flags;
3611
3612 spin_lock_irqsave(&priv->lock, flags);
3613 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3614 spin_unlock_irqrestore(&priv->lock, flags);
3615 return 0;
3616 }
3617 memcpy(&measure_report, &priv->measure_report, size);
3618 priv->measurement_status = 0;
3619 spin_unlock_irqrestore(&priv->lock, flags);
3620
3621 while (size && (PAGE_SIZE - len)) {
3622 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3623 PAGE_SIZE - len, 1);
3624 len = strlen(buf);
3625 if (PAGE_SIZE - len)
3626 buf[len++] = '\n';
3627
3628 ofs += 16;
3629 size -= min(size, 16U);
3630 }
3631
3632 return len;
3633}
3634
3635static ssize_t store_measurement(struct device *d,
3636 struct device_attribute *attr,
3637 const char *buf, size_t count)
3638{
3639 struct iwl_priv *priv = dev_get_drvdata(d);
3640 struct ieee80211_measurement_params params = {
3641 .channel = le16_to_cpu(priv->active_rxon.channel),
3642 .start_time = cpu_to_le64(priv->_3945.last_tsf),
3643 .duration = cpu_to_le16(1),
3644 };
3645 u8 type = IWL_MEASURE_BASIC;
3646 u8 buffer[32];
3647 u8 channel;
3648
3649 if (count) {
3650 char *p = buffer;
3651 strncpy(buffer, buf, min(sizeof(buffer), count));
3652 channel = simple_strtoul(p, NULL, 0);
3653 if (channel)
3654 params.channel = channel;
3655
3656 p = buffer;
3657 while (*p && *p != ' ')
3658 p++;
3659 if (*p)
3660 type = simple_strtoul(p + 1, NULL, 0);
3661 }
3662
3663 IWL_DEBUG_INFO(priv, "Invoking measurement of type %d on "
3664 "channel %d (for '%s')\n", type, params.channel, buf);
3665 iwl3945_get_measurement(priv, &params, type);
3666
3667 return count;
3668}
3669
3670static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3671 show_measurement, store_measurement);
3672
3673static ssize_t store_retry_rate(struct device *d,
3674 struct device_attribute *attr,
3675 const char *buf, size_t count)
3676{
3677 struct iwl_priv *priv = dev_get_drvdata(d);
3678
3679 priv->retry_rate = simple_strtoul(buf, NULL, 0);
3680 if (priv->retry_rate <= 0)
3681 priv->retry_rate = 1;
3682
3683 return count;
3684}
3685
3686static ssize_t show_retry_rate(struct device *d,
3687 struct device_attribute *attr, char *buf)
3688{
3689 struct iwl_priv *priv = dev_get_drvdata(d);
3690 return sprintf(buf, "%d", priv->retry_rate);
3691}
3692
3693static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3694 store_retry_rate);
3695
3696
3697static ssize_t show_channels(struct device *d,
3698 struct device_attribute *attr, char *buf)
3699{
3700 /* all this shit doesn't belong into sysfs anyway */
3701 return 0;
3702}
3703
3704static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3705
3706static ssize_t show_antenna(struct device *d,
3707 struct device_attribute *attr, char *buf)
3708{
3709 struct iwl_priv *priv = dev_get_drvdata(d);
3710
3711 if (!iwl_is_alive(priv))
3712 return -EAGAIN;
3713
3714 return sprintf(buf, "%d\n", iwl3945_mod_params.antenna);
3715}
3716
3717static ssize_t store_antenna(struct device *d,
3718 struct device_attribute *attr,
3719 const char *buf, size_t count)
3720{
3721 struct iwl_priv *priv __maybe_unused = dev_get_drvdata(d);
3722 int ant;
3723
3724 if (count == 0)
3725 return 0;
3726
3727 if (sscanf(buf, "%1i", &ant) != 1) {
3728 IWL_DEBUG_INFO(priv, "not in hex or decimal form.\n");
3729 return count;
3730 }
3731
3732 if ((ant >= 0) && (ant <= 2)) {
3733 IWL_DEBUG_INFO(priv, "Setting antenna select to %d.\n", ant);
3734 iwl3945_mod_params.antenna = (enum iwl3945_antenna)ant;
3735 } else
3736 IWL_DEBUG_INFO(priv, "Bad antenna select value %d.\n", ant);
3737
3738
3739 return count;
3740}
3741
3742static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
3743
3744static ssize_t show_status(struct device *d,
3745 struct device_attribute *attr, char *buf)
3746{
3747 struct iwl_priv *priv = dev_get_drvdata(d);
3748 if (!iwl_is_alive(priv))
3749 return -EAGAIN;
3750 return sprintf(buf, "0x%08x\n", (int)priv->status);
3751}
3752
3753static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3754
3755static ssize_t dump_error_log(struct device *d,
3756 struct device_attribute *attr,
3757 const char *buf, size_t count)
3758{
3759 struct iwl_priv *priv = dev_get_drvdata(d);
3760 char *p = (char *)buf;
3761
3762 if (p[0] == '1')
3763 iwl3945_dump_nic_error_log(priv);
3764
3765 return strnlen(buf, count);
3766}
3767
3768static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
3769
3770/*****************************************************************************
3771 *
3772 * driver setup and tear down
3773 *
3774 *****************************************************************************/
3775
3776static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
3777{
3778 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3779
3780 init_waitqueue_head(&priv->wait_command_queue);
3781
3782 INIT_WORK(&priv->restart, iwl3945_bg_restart);
3783 INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
3784 INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
3785 INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
3786 INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
3787 INIT_DELAYED_WORK(&priv->_3945.rfkill_poll, iwl3945_rfkill_poll);
3788 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
3789 INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
3790 INIT_WORK(&priv->start_internal_scan, iwl_bg_start_internal_scan);
3791 INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
3792
3793 iwl3945_hw_setup_deferred_work(priv);
3794
3795 if (priv->cfg->ops->lib->recover_from_tx_stall) {
3796 init_timer(&priv->monitor_recover);
3797 priv->monitor_recover.data = (unsigned long)priv;
3798 priv->monitor_recover.function =
3799 priv->cfg->ops->lib->recover_from_tx_stall;
3800 }
3801
3802 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3803 iwl3945_irq_tasklet, (unsigned long)priv);
3804}
3805
3806static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
3807{
3808 iwl3945_hw_cancel_deferred_work(priv);
3809
3810 cancel_delayed_work_sync(&priv->init_alive_start);
3811 cancel_delayed_work(&priv->scan_check);
3812 cancel_delayed_work(&priv->alive_start);
3813 cancel_work_sync(&priv->start_internal_scan);
3814 cancel_work_sync(&priv->beacon_update);
3815 if (priv->cfg->ops->lib->recover_from_tx_stall)
3816 del_timer_sync(&priv->monitor_recover);
3817}
3818
3819static struct attribute *iwl3945_sysfs_entries[] = {
3820 &dev_attr_antenna.attr,
3821 &dev_attr_channels.attr,
3822 &dev_attr_dump_errors.attr,
3823 &dev_attr_flags.attr,
3824 &dev_attr_filter_flags.attr,
3825 &dev_attr_measurement.attr,
3826 &dev_attr_retry_rate.attr,
3827 &dev_attr_status.attr,
3828 &dev_attr_temperature.attr,
3829 &dev_attr_tx_power.attr,
3830#ifdef CONFIG_IWLWIFI_DEBUG
3831 &dev_attr_debug_level.attr,
3832#endif
3833 NULL
3834};
3835
3836static struct attribute_group iwl3945_attribute_group = {
3837 .name = NULL, /* put in device directory */
3838 .attrs = iwl3945_sysfs_entries,
3839};
3840
3841static struct ieee80211_ops iwl3945_hw_ops = {
3842 .tx = iwl3945_mac_tx,
3843 .start = iwl3945_mac_start,
3844 .stop = iwl3945_mac_stop,
3845 .add_interface = iwl_mac_add_interface,
3846 .remove_interface = iwl_mac_remove_interface,
3847 .config = iwl_mac_config,
3848 .configure_filter = iwl3945_configure_filter,
3849 .set_key = iwl3945_mac_set_key,
3850 .conf_tx = iwl_mac_conf_tx,
3851 .reset_tsf = iwl_mac_reset_tsf,
3852 .bss_info_changed = iwl_bss_info_changed,
3853 .hw_scan = iwl_mac_hw_scan,
3854 .sta_add = iwl3945_mac_sta_add,
3855 .sta_remove = iwl_mac_sta_remove,
3856};
3857
3858static int iwl3945_init_drv(struct iwl_priv *priv)
3859{
3860 int ret;
3861 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
3862
3863 priv->retry_rate = 1;
3864 priv->ibss_beacon = NULL;
3865
3866 spin_lock_init(&priv->sta_lock);
3867 spin_lock_init(&priv->hcmd_lock);
3868
3869 INIT_LIST_HEAD(&priv->free_frames);
3870
3871 mutex_init(&priv->mutex);
3872 mutex_init(&priv->sync_cmd_mutex);
3873
3874 priv->ieee_channels = NULL;
3875 priv->ieee_rates = NULL;
3876 priv->band = IEEE80211_BAND_2GHZ;
3877
3878 priv->iw_mode = NL80211_IFTYPE_STATION;
3879 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
3880
3881 priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER;
3882
3883 if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
3884 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
3885 eeprom->version);
3886 ret = -EINVAL;
3887 goto err;
3888 }
3889 ret = iwl_init_channel_map(priv);
3890 if (ret) {
3891 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3892 goto err;
3893 }
3894
3895 /* Set up txpower settings in driver for all channels */
3896 if (iwl3945_txpower_set_from_eeprom(priv)) {
3897 ret = -EIO;
3898 goto err_free_channel_map;
3899 }
3900
3901 ret = iwlcore_init_geos(priv);
3902 if (ret) {
3903 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3904 goto err_free_channel_map;
3905 }
3906 iwl3945_init_hw_rates(priv, priv->ieee_rates);
3907
3908 return 0;
3909
3910err_free_channel_map:
3911 iwl_free_channel_map(priv);
3912err:
3913 return ret;
3914}
3915
3916#define IWL3945_MAX_PROBE_REQUEST 200
3917
3918static int iwl3945_setup_mac(struct iwl_priv *priv)
3919{
3920 int ret;
3921 struct ieee80211_hw *hw = priv->hw;
3922
3923 hw->rate_control_algorithm = "iwl-3945-rs";
3924 hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
3925 hw->vif_data_size = sizeof(struct iwl_vif_priv);
3926
3927 /* Tell mac80211 our characteristics */
3928 hw->flags = IEEE80211_HW_SIGNAL_DBM |
3929 IEEE80211_HW_SPECTRUM_MGMT;
3930
3931 if (!priv->cfg->broken_powersave)
3932 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
3933 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
3934
3935 hw->wiphy->interface_modes =
3936 BIT(NL80211_IFTYPE_STATION) |
3937 BIT(NL80211_IFTYPE_ADHOC);
3938
3939 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
3940 WIPHY_FLAG_DISABLE_BEACON_HINTS;
3941
3942 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX_3945;
3943 /* we create the 802.11 header and a zero-length SSID element */
3944 hw->wiphy->max_scan_ie_len = IWL3945_MAX_PROBE_REQUEST - 24 - 2;
3945
3946 /* Default value; 4 EDCA QOS priorities */
3947 hw->queues = 4;
3948
3949 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
3950 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3951 &priv->bands[IEEE80211_BAND_2GHZ];
3952
3953 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
3954 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
3955 &priv->bands[IEEE80211_BAND_5GHZ];
3956
3957 ret = ieee80211_register_hw(priv->hw);
3958 if (ret) {
3959 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
3960 return ret;
3961 }
3962 priv->mac80211_registered = 1;
3963
3964 return 0;
3965}
3966
3967static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3968{
3969 int err = 0;
3970 struct iwl_priv *priv;
3971 struct ieee80211_hw *hw;
3972 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3973 struct iwl3945_eeprom *eeprom;
3974 unsigned long flags;
3975
3976 /***********************
3977 * 1. Allocating HW data
3978 * ********************/
3979
3980 /* mac80211 allocates memory for this device instance, including
3981 * space for this driver's private structure */
3982 hw = iwl_alloc_all(cfg, &iwl3945_hw_ops);
3983 if (hw == NULL) {
3984 pr_err("Can not allocate network device\n");
3985 err = -ENOMEM;
3986 goto out;
3987 }
3988 priv = hw->priv;
3989 SET_IEEE80211_DEV(hw, &pdev->dev);
3990
3991 /*
3992 * Disabling hardware scan means that mac80211 will perform scans
3993 * "the hard way", rather than using device's scan.
3994 */
3995 if (iwl3945_mod_params.disable_hw_scan) {
3996 IWL_DEBUG_INFO(priv, "Disabling hw_scan\n");
3997 iwl3945_hw_ops.hw_scan = NULL;
3998 }
3999
4000
4001 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
4002 priv->cfg = cfg;
4003 priv->pci_dev = pdev;
4004 priv->inta_mask = CSR_INI_SET_MASK;
4005
4006 if (iwl_alloc_traffic_mem(priv))
4007 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
4008
4009 /***************************
4010 * 2. Initializing PCI bus
4011 * *************************/
4012 if (pci_enable_device(pdev)) {
4013 err = -ENODEV;
4014 goto out_ieee80211_free_hw;
4015 }
4016
4017 pci_set_master(pdev);
4018
4019 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4020 if (!err)
4021 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
4022 if (err) {
4023 IWL_WARN(priv, "No suitable DMA available.\n");
4024 goto out_pci_disable_device;
4025 }
4026
4027 pci_set_drvdata(pdev, priv);
4028 err = pci_request_regions(pdev, DRV_NAME);
4029 if (err)
4030 goto out_pci_disable_device;
4031
4032 /***********************
4033 * 3. Read REV Register
4034 * ********************/
4035 priv->hw_base = pci_iomap(pdev, 0, 0);
4036 if (!priv->hw_base) {
4037 err = -ENODEV;
4038 goto out_pci_release_regions;
4039 }
4040
4041 IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
4042 (unsigned long long) pci_resource_len(pdev, 0));
4043 IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
4044
4045 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4046 * PCI Tx retries from interfering with C3 CPU state */
4047 pci_write_config_byte(pdev, 0x41, 0x00);
4048
4049 /* these spin locks will be used in apm_ops.init and EEPROM access
4050 * we should init now
4051 */
4052 spin_lock_init(&priv->reg_lock);
4053 spin_lock_init(&priv->lock);
4054
4055 /*
4056 * stop and reset the on-board processor just in case it is in a
4057 * strange state ... like being left stranded by a primary kernel
4058 * and this is now the kdump kernel trying to start up
4059 */
4060 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
4061
4062 /***********************
4063 * 4. Read EEPROM
4064 * ********************/
4065
4066 /* Read the EEPROM */
4067 err = iwl_eeprom_init(priv);
4068 if (err) {
4069 IWL_ERR(priv, "Unable to init EEPROM\n");
4070 goto out_iounmap;
4071 }
4072 /* MAC Address location in EEPROM same for 3945/4965 */
4073 eeprom = (struct iwl3945_eeprom *)priv->eeprom;
4074 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", eeprom->mac_address);
4075 SET_IEEE80211_PERM_ADDR(priv->hw, eeprom->mac_address);
4076
4077 /***********************
4078 * 5. Setup HW Constants
4079 * ********************/
4080 /* Device-specific setup */
4081 if (iwl3945_hw_set_hw_params(priv)) {
4082 IWL_ERR(priv, "failed to set hw settings\n");
4083 goto out_eeprom_free;
4084 }
4085
4086 /***********************
4087 * 6. Setup priv
4088 * ********************/
4089
4090 err = iwl3945_init_drv(priv);
4091 if (err) {
4092 IWL_ERR(priv, "initializing driver failed\n");
4093 goto out_unset_hw_params;
4094 }
4095
4096 IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
4097 priv->cfg->name);
4098
4099 /***********************
4100 * 7. Setup Services
4101 * ********************/
4102
4103 spin_lock_irqsave(&priv->lock, flags);
4104 iwl_disable_interrupts(priv);
4105 spin_unlock_irqrestore(&priv->lock, flags);
4106
4107 pci_enable_msi(priv->pci_dev);
4108
4109 err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr,
4110 IRQF_SHARED, DRV_NAME, priv);
4111 if (err) {
4112 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
4113 goto out_disable_msi;
4114 }
4115
4116 err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4117 if (err) {
4118 IWL_ERR(priv, "failed to create sysfs device attributes\n");
4119 goto out_release_irq;
4120 }
4121
4122 iwl_set_rxon_channel(priv,
4123 &priv->bands[IEEE80211_BAND_2GHZ].channels[5]);
4124 iwl3945_setup_deferred_work(priv);
4125 iwl3945_setup_rx_handlers(priv);
4126 iwl_power_initialize(priv);
4127
4128 /*********************************
4129 * 8. Setup and Register mac80211
4130 * *******************************/
4131
4132 iwl_enable_interrupts(priv);
4133
4134 err = iwl3945_setup_mac(priv);
4135 if (err)
4136 goto out_remove_sysfs;
4137
4138 err = iwl_dbgfs_register(priv, DRV_NAME);
4139 if (err)
4140 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
4141
4142 /* Start monitoring the killswitch */
4143 queue_delayed_work(priv->workqueue, &priv->_3945.rfkill_poll,
4144 2 * HZ);
4145
4146 return 0;
4147
4148 out_remove_sysfs:
4149 destroy_workqueue(priv->workqueue);
4150 priv->workqueue = NULL;
4151 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4152 out_release_irq:
4153 free_irq(priv->pci_dev->irq, priv);
4154 out_disable_msi:
4155 pci_disable_msi(priv->pci_dev);
4156 iwlcore_free_geos(priv);
4157 iwl_free_channel_map(priv);
4158 out_unset_hw_params:
4159 iwl3945_unset_hw_params(priv);
4160 out_eeprom_free:
4161 iwl_eeprom_free(priv);
4162 out_iounmap:
4163 pci_iounmap(pdev, priv->hw_base);
4164 out_pci_release_regions:
4165 pci_release_regions(pdev);
4166 out_pci_disable_device:
4167 pci_set_drvdata(pdev, NULL);
4168 pci_disable_device(pdev);
4169 out_ieee80211_free_hw:
4170 iwl_free_traffic_mem(priv);
4171 ieee80211_free_hw(priv->hw);
4172 out:
4173 return err;
4174}
4175
4176static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
4177{
4178 struct iwl_priv *priv = pci_get_drvdata(pdev);
4179 unsigned long flags;
4180
4181 if (!priv)
4182 return;
4183
4184 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
4185
4186 iwl_dbgfs_unregister(priv);
4187
4188 set_bit(STATUS_EXIT_PENDING, &priv->status);
4189
4190 if (priv->mac80211_registered) {
4191 ieee80211_unregister_hw(priv->hw);
4192 priv->mac80211_registered = 0;
4193 } else {
4194 iwl3945_down(priv);
4195 }
4196
4197 /*
4198 * Make sure device is reset to low power before unloading driver.
4199 * This may be redundant with iwl_down(), but there are paths to
4200 * run iwl_down() without calling apm_ops.stop(), and there are
4201 * paths to avoid running iwl_down() at all before leaving driver.
4202 * This (inexpensive) call *makes sure* device is reset.
4203 */
4204 priv->cfg->ops->lib->apm_ops.stop(priv);
4205
4206 /* make sure we flush any pending irq or
4207 * tasklet for the driver
4208 */
4209 spin_lock_irqsave(&priv->lock, flags);
4210 iwl_disable_interrupts(priv);
4211 spin_unlock_irqrestore(&priv->lock, flags);
4212
4213 iwl_synchronize_irq(priv);
4214
4215 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4216
4217 cancel_delayed_work_sync(&priv->_3945.rfkill_poll);
4218
4219 iwl3945_dealloc_ucode_pci(priv);
4220
4221 if (priv->rxq.bd)
4222 iwl3945_rx_queue_free(priv, &priv->rxq);
4223 iwl3945_hw_txq_ctx_free(priv);
4224
4225 iwl3945_unset_hw_params(priv);
4226
4227 /*netif_stop_queue(dev); */
4228 flush_workqueue(priv->workqueue);
4229
4230 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4231 * priv->workqueue... so we can't take down the workqueue
4232 * until now... */
4233 destroy_workqueue(priv->workqueue);
4234 priv->workqueue = NULL;
4235 iwl_free_traffic_mem(priv);
4236
4237 free_irq(pdev->irq, priv);
4238 pci_disable_msi(pdev);
4239
4240 pci_iounmap(pdev, priv->hw_base);
4241 pci_release_regions(pdev);
4242 pci_disable_device(pdev);
4243 pci_set_drvdata(pdev, NULL);
4244
4245 iwl_free_channel_map(priv);
4246 iwlcore_free_geos(priv);
4247 kfree(priv->scan_cmd);
4248 if (priv->ibss_beacon)
4249 dev_kfree_skb(priv->ibss_beacon);
4250
4251 ieee80211_free_hw(priv->hw);
4252}
4253
4254
4255/*****************************************************************************
4256 *
4257 * driver and module entry point
4258 *
4259 *****************************************************************************/
4260
4261static struct pci_driver iwl3945_driver = {
4262 .name = DRV_NAME,
4263 .id_table = iwl3945_hw_card_ids,
4264 .probe = iwl3945_pci_probe,
4265 .remove = __devexit_p(iwl3945_pci_remove),
4266#ifdef CONFIG_PM
4267 .suspend = iwl_pci_suspend,
4268 .resume = iwl_pci_resume,
4269#endif
4270};
4271
4272static int __init iwl3945_init(void)
4273{
4274
4275 int ret;
4276 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
4277 pr_info(DRV_COPYRIGHT "\n");
4278
4279 ret = iwl3945_rate_control_register();
4280 if (ret) {
4281 pr_err("Unable to register rate control algorithm: %d\n", ret);
4282 return ret;
4283 }
4284
4285 ret = pci_register_driver(&iwl3945_driver);
4286 if (ret) {
4287 pr_err("Unable to initialize PCI module\n");
4288 goto error_register;
4289 }
4290
4291 return ret;
4292
4293error_register:
4294 iwl3945_rate_control_unregister();
4295 return ret;
4296}
4297
4298static void __exit iwl3945_exit(void)
4299{
4300 pci_unregister_driver(&iwl3945_driver);
4301 iwl3945_rate_control_unregister();
4302}
4303
4304MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
4305
4306module_param_named(antenna, iwl3945_mod_params.antenna, int, S_IRUGO);
4307MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
4308module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, S_IRUGO);
4309MODULE_PARM_DESC(swcrypto,
4310 "using software crypto (default 1 [software])\n");
4311#ifdef CONFIG_IWLWIFI_DEBUG
4312module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
4313MODULE_PARM_DESC(debug, "debug output mask");
4314#endif
4315module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan,
4316 int, S_IRUGO);
4317MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
4318module_param_named(fw_restart3945, iwl3945_mod_params.restart_fw, int, S_IRUGO);
4319MODULE_PARM_DESC(fw_restart3945, "restart firmware in case of error");
4320
4321module_exit(iwl3945_exit);
4322module_init(iwl3945_init);
generated by cgit v1.2.2 (git 2.25.0) at 2025-04-12 02:48:54 -0400