1 /******************************************************************************
3 * Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved.
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
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.
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
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
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *****************************************************************************/
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/init.h>
33 #include <linux/pci.h>
34 #include <linux/dma-mapping.h>
35 #include <linux/delay.h>
36 #include <linux/sched.h>
37 #include <linux/skbuff.h>
38 #include <linux/netdevice.h>
39 #include <linux/wireless.h>
40 #include <linux/firmware.h>
41 #include <linux/etherdevice.h>
42 #include <linux/if_arp.h>
44 #include <net/ieee80211_radiotap.h>
45 #include <net/mac80211.h>
47 #include <asm/div64.h>
49 #define DRV_NAME "iwl3945"
52 #include "iwl-3945-fh.h"
53 #include "iwl-commands.h"
57 #include "iwl-helpers.h"
59 #include "iwl-spectrum.h"
62 * module name, copyright, version, etc.
65 #define DRV_DESCRIPTION \
66 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
68 #ifdef CONFIG_IWLWIFI_DEBUG
75 * add "s" to indicate spectrum measurement included.
76 * we add it here to be consistent with previous releases in which
77 * this was configurable.
79 #define DRV_VERSION IWLWIFI_VERSION VD "s"
80 #define DRV_COPYRIGHT "Copyright(c) 2003-2010 Intel Corporation"
81 #define DRV_AUTHOR "<ilw@linux.intel.com>"
83 MODULE_DESCRIPTION(DRV_DESCRIPTION);
84 MODULE_VERSION(DRV_VERSION);
85 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
86 MODULE_LICENSE("GPL");
88 /* module parameters */
89 struct iwl_mod_params iwl3945_mod_params = {
92 /* the rest are 0 by default */
96 * iwl3945_get_antenna_flags - Get antenna flags for RXON command
97 * @priv: eeprom and antenna fields are used to determine antenna flags
99 * priv->eeprom39 is used to determine if antenna AUX/MAIN are reversed
100 * iwl3945_mod_params.antenna specifies the antenna diversity mode:
102 * IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
103 * IWL_ANTENNA_MAIN - Force MAIN antenna
104 * IWL_ANTENNA_AUX - Force AUX antenna
106 __le32 iwl3945_get_antenna_flags(const struct iwl_priv *priv)
108 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
110 switch (iwl3945_mod_params.antenna) {
111 case IWL_ANTENNA_DIVERSITY:
114 case IWL_ANTENNA_MAIN:
115 if (eeprom->antenna_switch_type)
116 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
117 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
119 case IWL_ANTENNA_AUX:
120 if (eeprom->antenna_switch_type)
121 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
122 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
125 /* bad antenna selector value */
126 IWL_ERR(priv, "Bad antenna selector value (0x%x)\n",
127 iwl3945_mod_params.antenna);
129 return 0; /* "diversity" is default if error */
132 static int iwl3945_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
133 struct ieee80211_key_conf *keyconf,
137 __le16 key_flags = 0;
140 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
141 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
143 if (sta_id == priv->hw_params.bcast_sta_id)
144 key_flags |= STA_KEY_MULTICAST_MSK;
146 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
147 keyconf->hw_key_idx = keyconf->keyidx;
148 key_flags &= ~STA_KEY_FLG_INVALID;
150 spin_lock_irqsave(&priv->sta_lock, flags);
151 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
152 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
153 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
156 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
159 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
160 == STA_KEY_FLG_NO_ENC)
161 priv->stations[sta_id].sta.key.key_offset =
162 iwl_get_free_ucode_key_index(priv);
163 /* else, we are overriding an existing key => no need to allocated room
166 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
167 "no space for a new key");
169 priv->stations[sta_id].sta.key.key_flags = key_flags;
170 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
171 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
173 IWL_DEBUG_INFO(priv, "hwcrypto: modify ucode station key info\n");
175 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
177 spin_unlock_irqrestore(&priv->sta_lock, flags);
182 static int iwl3945_set_tkip_dynamic_key_info(struct iwl_priv *priv,
183 struct ieee80211_key_conf *keyconf,
189 static int iwl3945_set_wep_dynamic_key_info(struct iwl_priv *priv,
190 struct ieee80211_key_conf *keyconf,
196 static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
200 spin_lock_irqsave(&priv->sta_lock, flags);
201 memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl_hw_key));
202 memset(&priv->stations[sta_id].sta.key, 0,
203 sizeof(struct iwl4965_keyinfo));
204 priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
205 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
206 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
207 spin_unlock_irqrestore(&priv->sta_lock, flags);
209 IWL_DEBUG_INFO(priv, "hwcrypto: clear ucode station key info\n");
210 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, 0);
214 static int iwl3945_set_dynamic_key(struct iwl_priv *priv,
215 struct ieee80211_key_conf *keyconf, u8 sta_id)
219 keyconf->hw_key_idx = HW_KEY_DYNAMIC;
221 switch (keyconf->alg) {
223 ret = iwl3945_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
226 ret = iwl3945_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
229 ret = iwl3945_set_wep_dynamic_key_info(priv, keyconf, sta_id);
232 IWL_ERR(priv, "Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
236 IWL_DEBUG_WEP(priv, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
237 keyconf->alg, keyconf->keylen, keyconf->keyidx,
243 static int iwl3945_remove_static_key(struct iwl_priv *priv)
245 int ret = -EOPNOTSUPP;
250 static int iwl3945_set_static_key(struct iwl_priv *priv,
251 struct ieee80211_key_conf *key)
253 if (key->alg == ALG_WEP)
256 IWL_ERR(priv, "Static key invalid: alg %d\n", key->alg);
260 static void iwl3945_clear_free_frames(struct iwl_priv *priv)
262 struct list_head *element;
264 IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
267 while (!list_empty(&priv->free_frames)) {
268 element = priv->free_frames.next;
270 kfree(list_entry(element, struct iwl3945_frame, list));
271 priv->frames_count--;
274 if (priv->frames_count) {
275 IWL_WARN(priv, "%d frames still in use. Did we lose one?\n",
277 priv->frames_count = 0;
281 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv)
283 struct iwl3945_frame *frame;
284 struct list_head *element;
285 if (list_empty(&priv->free_frames)) {
286 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
288 IWL_ERR(priv, "Could not allocate frame!\n");
292 priv->frames_count++;
296 element = priv->free_frames.next;
298 return list_entry(element, struct iwl3945_frame, list);
301 static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame)
303 memset(frame, 0, sizeof(*frame));
304 list_add(&frame->list, &priv->free_frames);
307 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
308 struct ieee80211_hdr *hdr,
312 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
313 ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
314 (priv->iw_mode != NL80211_IFTYPE_AP)))
317 if (priv->ibss_beacon->len > left)
320 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
322 return priv->ibss_beacon->len;
325 static int iwl3945_send_beacon_cmd(struct iwl_priv *priv)
327 struct iwl3945_frame *frame;
328 unsigned int frame_size;
332 frame = iwl3945_get_free_frame(priv);
335 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
340 rate = iwl_rate_get_lowest_plcp(priv);
342 frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
344 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
347 iwl3945_free_frame(priv, frame);
352 static void iwl3945_unset_hw_params(struct iwl_priv *priv)
354 if (priv->_3945.shared_virt)
355 dma_free_coherent(&priv->pci_dev->dev,
356 sizeof(struct iwl3945_shared),
357 priv->_3945.shared_virt,
358 priv->_3945.shared_phys);
361 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
362 struct ieee80211_tx_info *info,
363 struct iwl_device_cmd *cmd,
364 struct sk_buff *skb_frag,
367 struct iwl3945_tx_cmd *tx_cmd = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
368 struct iwl_hw_key *keyinfo = &priv->stations[sta_id].keyinfo;
370 switch (keyinfo->alg) {
372 tx_cmd->sec_ctl = TX_CMD_SEC_CCM;
373 memcpy(tx_cmd->key, keyinfo->key, keyinfo->keylen);
374 IWL_DEBUG_TX(priv, "tx_cmd with AES hwcrypto\n");
381 tx_cmd->sec_ctl = TX_CMD_SEC_WEP |
382 (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
384 if (keyinfo->keylen == 13)
385 tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128;
387 memcpy(&tx_cmd->key[3], keyinfo->key, keyinfo->keylen);
389 IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption "
390 "with key %d\n", info->control.hw_key->hw_key_idx);
394 IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg);
400 * handle build REPLY_TX command notification.
402 static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
403 struct iwl_device_cmd *cmd,
404 struct ieee80211_tx_info *info,
405 struct ieee80211_hdr *hdr, u8 std_id)
407 struct iwl3945_tx_cmd *tx_cmd = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
408 __le32 tx_flags = tx_cmd->tx_flags;
409 __le16 fc = hdr->frame_control;
411 tx_cmd->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
412 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
413 tx_flags |= TX_CMD_FLG_ACK_MSK;
414 if (ieee80211_is_mgmt(fc))
415 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
416 if (ieee80211_is_probe_resp(fc) &&
417 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
418 tx_flags |= TX_CMD_FLG_TSF_MSK;
420 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
421 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
424 tx_cmd->sta_id = std_id;
425 if (ieee80211_has_morefrags(fc))
426 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
428 if (ieee80211_is_data_qos(fc)) {
429 u8 *qc = ieee80211_get_qos_ctl(hdr);
430 tx_cmd->tid_tspec = qc[0] & 0xf;
431 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
433 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
436 priv->cfg->ops->utils->rts_tx_cmd_flag(info, &tx_flags);
438 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
439 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
441 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
442 if (ieee80211_is_mgmt(fc)) {
443 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
444 tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(3);
446 tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(2);
448 tx_cmd->timeout.pm_frame_timeout = 0;
451 tx_cmd->driver_txop = 0;
452 tx_cmd->tx_flags = tx_flags;
453 tx_cmd->next_frame_len = 0;
457 * start REPLY_TX command process
459 static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
461 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
462 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
463 struct iwl3945_tx_cmd *tx_cmd;
464 struct iwl_tx_queue *txq = NULL;
465 struct iwl_queue *q = NULL;
466 struct iwl_device_cmd *out_cmd;
467 struct iwl_cmd_meta *out_meta;
468 dma_addr_t phys_addr;
469 dma_addr_t txcmd_phys;
470 int txq_id = skb_get_queue_mapping(skb);
471 u16 len, idx, len_org, hdr_len; /* TODO: len_org is not used */
478 u8 wait_write_ptr = 0;
482 spin_lock_irqsave(&priv->lock, flags);
483 if (iwl_is_rfkill(priv)) {
484 IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n");
488 if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
489 IWL_ERR(priv, "ERROR: No TX rate available.\n");
493 unicast = !is_multicast_ether_addr(hdr->addr1);
496 fc = hdr->frame_control;
498 #ifdef CONFIG_IWLWIFI_DEBUG
499 if (ieee80211_is_auth(fc))
500 IWL_DEBUG_TX(priv, "Sending AUTH frame\n");
501 else if (ieee80211_is_assoc_req(fc))
502 IWL_DEBUG_TX(priv, "Sending ASSOC frame\n");
503 else if (ieee80211_is_reassoc_req(fc))
504 IWL_DEBUG_TX(priv, "Sending REASSOC frame\n");
507 spin_unlock_irqrestore(&priv->lock, flags);
509 hdr_len = ieee80211_hdrlen(fc);
511 /* Find (or create) index into station table for destination station */
512 if (info->flags & IEEE80211_TX_CTL_INJECTED)
513 sta_id = priv->hw_params.bcast_sta_id;
515 sta_id = iwl_get_sta_id(priv, hdr);
516 if (sta_id == IWL_INVALID_STATION) {
517 IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n",
522 IWL_DEBUG_RATE(priv, "station Id %d\n", sta_id);
524 if (ieee80211_is_data_qos(fc)) {
525 qc = ieee80211_get_qos_ctl(hdr);
526 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
527 if (unlikely(tid >= MAX_TID_COUNT))
529 seq_number = priv->stations[sta_id].tid[tid].seq_number &
531 hdr->seq_ctrl = cpu_to_le16(seq_number) |
533 cpu_to_le16(IEEE80211_SCTL_FRAG));
537 /* Descriptor for chosen Tx queue */
538 txq = &priv->txq[txq_id];
541 if ((iwl_queue_space(q) < q->high_mark))
544 spin_lock_irqsave(&priv->lock, flags);
546 idx = get_cmd_index(q, q->write_ptr, 0);
548 /* Set up driver data for this TFD */
549 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
550 txq->txb[q->write_ptr].skb[0] = skb;
552 /* Init first empty entry in queue's array of Tx/cmd buffers */
553 out_cmd = txq->cmd[idx];
554 out_meta = &txq->meta[idx];
555 tx_cmd = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload;
556 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
557 memset(tx_cmd, 0, sizeof(*tx_cmd));
560 * Set up the Tx-command (not MAC!) header.
561 * Store the chosen Tx queue and TFD index within the sequence field;
562 * after Tx, uCode's Tx response will return this value so driver can
563 * locate the frame within the tx queue and do post-tx processing.
565 out_cmd->hdr.cmd = REPLY_TX;
566 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
567 INDEX_TO_SEQ(q->write_ptr)));
569 /* Copy MAC header from skb into command buffer */
570 memcpy(tx_cmd->hdr, hdr, hdr_len);
573 if (info->control.hw_key)
574 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, sta_id);
576 /* TODO need this for burst mode later on */
577 iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id);
579 /* set is_hcca to 0; it probably will never be implemented */
580 iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
582 /* Total # bytes to be transmitted */
584 tx_cmd->len = cpu_to_le16(len);
586 iwl_dbg_log_tx_data_frame(priv, len, hdr);
587 iwl_update_stats(priv, true, fc, len);
588 tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
589 tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
591 if (!ieee80211_has_morefrags(hdr->frame_control)) {
592 txq->need_update = 1;
594 priv->stations[sta_id].tid[tid].seq_number = seq_number;
597 txq->need_update = 0;
600 IWL_DEBUG_TX(priv, "sequence nr = 0X%x \n",
601 le16_to_cpu(out_cmd->hdr.sequence));
602 IWL_DEBUG_TX(priv, "tx_flags = 0X%x \n", le32_to_cpu(tx_cmd->tx_flags));
603 iwl_print_hex_dump(priv, IWL_DL_TX, tx_cmd, sizeof(*tx_cmd));
604 iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx_cmd->hdr,
605 ieee80211_hdrlen(fc));
608 * Use the first empty entry in this queue's command buffer array
609 * to contain the Tx command and MAC header concatenated together
610 * (payload data will be in another buffer).
611 * Size of this varies, due to varying MAC header length.
612 * If end is not dword aligned, we'll have 2 extra bytes at the end
613 * of the MAC header (device reads on dword boundaries).
614 * We'll tell device about this padding later.
616 len = sizeof(struct iwl3945_tx_cmd) +
617 sizeof(struct iwl_cmd_header) + hdr_len;
620 len = (len + 3) & ~3;
627 /* Physical address of this Tx command's header (not MAC header!),
628 * within command buffer array. */
629 txcmd_phys = pci_map_single(priv->pci_dev, &out_cmd->hdr,
630 len, PCI_DMA_TODEVICE);
631 /* we do not map meta data ... so we can safely access address to
632 * provide to unmap command*/
633 pci_unmap_addr_set(out_meta, mapping, txcmd_phys);
634 pci_unmap_len_set(out_meta, len, len);
636 /* Add buffer containing Tx command and MAC(!) header to TFD's
638 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
639 txcmd_phys, len, 1, 0);
642 /* Set up TFD's 2nd entry to point directly to remainder of skb,
643 * if any (802.11 null frames have no payload). */
644 len = skb->len - hdr_len;
646 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
647 len, PCI_DMA_TODEVICE);
648 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
654 /* Tell device the write index *just past* this latest filled TFD */
655 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
656 iwl_txq_update_write_ptr(priv, txq);
657 spin_unlock_irqrestore(&priv->lock, flags);
659 if ((iwl_queue_space(q) < q->high_mark)
660 && priv->mac80211_registered) {
661 if (wait_write_ptr) {
662 spin_lock_irqsave(&priv->lock, flags);
663 txq->need_update = 1;
664 iwl_txq_update_write_ptr(priv, txq);
665 spin_unlock_irqrestore(&priv->lock, flags);
668 iwl_stop_queue(priv, skb_get_queue_mapping(skb));
674 spin_unlock_irqrestore(&priv->lock, flags);
679 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
680 #define BEACON_TIME_MASK_HIGH 0xFF000000
681 #define TIME_UNIT 1024
684 * extended beacon time format
685 * time in usec will be changed into a 32-bit value in 8:24 format
686 * the high 1 byte is the beacon counts
687 * the lower 3 bytes is the time in usec within one beacon interval
690 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
694 u32 interval = beacon_interval * 1024;
696 if (!interval || !usec)
699 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
700 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
702 return (quot << 24) + rem;
705 /* base is usually what we get from ucode with each received frame,
706 * the same as HW timer counter counting down
709 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
711 u32 base_low = base & BEACON_TIME_MASK_LOW;
712 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
713 u32 interval = beacon_interval * TIME_UNIT;
714 u32 res = (base & BEACON_TIME_MASK_HIGH) +
715 (addon & BEACON_TIME_MASK_HIGH);
717 if (base_low > addon_low)
718 res += base_low - addon_low;
719 else if (base_low < addon_low) {
720 res += interval + base_low - addon_low;
725 return cpu_to_le32(res);
728 static int iwl3945_get_measurement(struct iwl_priv *priv,
729 struct ieee80211_measurement_params *params,
732 struct iwl_spectrum_cmd spectrum;
733 struct iwl_rx_packet *pkt;
734 struct iwl_host_cmd cmd = {
735 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
736 .data = (void *)&spectrum,
737 .flags = CMD_WANT_SKB,
739 u32 add_time = le64_to_cpu(params->start_time);
741 int spectrum_resp_status;
742 int duration = le16_to_cpu(params->duration);
744 if (iwl_is_associated(priv))
746 iwl3945_usecs_to_beacons(
747 le64_to_cpu(params->start_time) - priv->_3945.last_tsf,
748 le16_to_cpu(priv->rxon_timing.beacon_interval));
750 memset(&spectrum, 0, sizeof(spectrum));
752 spectrum.channel_count = cpu_to_le16(1);
754 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
755 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
756 cmd.len = sizeof(spectrum);
757 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
759 if (iwl_is_associated(priv))
760 spectrum.start_time =
761 iwl3945_add_beacon_time(priv->_3945.last_beacon_time,
763 le16_to_cpu(priv->rxon_timing.beacon_interval));
765 spectrum.start_time = 0;
767 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
768 spectrum.channels[0].channel = params->channel;
769 spectrum.channels[0].type = type;
770 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
771 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
772 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
774 rc = iwl_send_cmd_sync(priv, &cmd);
778 pkt = (struct iwl_rx_packet *)cmd.reply_page;
779 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
780 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
784 spectrum_resp_status = le16_to_cpu(pkt->u.spectrum.status);
785 switch (spectrum_resp_status) {
786 case 0: /* Command will be handled */
787 if (pkt->u.spectrum.id != 0xff) {
788 IWL_DEBUG_INFO(priv, "Replaced existing measurement: %d\n",
790 priv->measurement_status &= ~MEASUREMENT_READY;
792 priv->measurement_status |= MEASUREMENT_ACTIVE;
796 case 1: /* Command will not be handled */
801 iwl_free_pages(priv, cmd.reply_page);
806 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
807 struct iwl_rx_mem_buffer *rxb)
809 struct iwl_rx_packet *pkt = rxb_addr(rxb);
810 struct iwl_alive_resp *palive;
811 struct delayed_work *pwork;
813 palive = &pkt->u.alive_frame;
815 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
817 palive->is_valid, palive->ver_type,
818 palive->ver_subtype);
820 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
821 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
822 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
823 sizeof(struct iwl_alive_resp));
824 pwork = &priv->init_alive_start;
826 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
827 memcpy(&priv->card_alive, &pkt->u.alive_frame,
828 sizeof(struct iwl_alive_resp));
829 pwork = &priv->alive_start;
830 iwl3945_disable_events(priv);
833 /* We delay the ALIVE response by 5ms to
834 * give the HW RF Kill time to activate... */
835 if (palive->is_valid == UCODE_VALID_OK)
836 queue_delayed_work(priv->workqueue, pwork,
837 msecs_to_jiffies(5));
839 IWL_WARN(priv, "uCode did not respond OK.\n");
842 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
843 struct iwl_rx_mem_buffer *rxb)
845 #ifdef CONFIG_IWLWIFI_DEBUG
846 struct iwl_rx_packet *pkt = rxb_addr(rxb);
849 IWL_DEBUG_RX(priv, "Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
853 static void iwl3945_bg_beacon_update(struct work_struct *work)
855 struct iwl_priv *priv =
856 container_of(work, struct iwl_priv, beacon_update);
857 struct sk_buff *beacon;
859 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
860 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
863 IWL_ERR(priv, "update beacon failed\n");
867 mutex_lock(&priv->mutex);
868 /* new beacon skb is allocated every time; dispose previous.*/
869 if (priv->ibss_beacon)
870 dev_kfree_skb(priv->ibss_beacon);
872 priv->ibss_beacon = beacon;
873 mutex_unlock(&priv->mutex);
875 iwl3945_send_beacon_cmd(priv);
878 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
879 struct iwl_rx_mem_buffer *rxb)
881 #ifdef CONFIG_IWLWIFI_DEBUG
882 struct iwl_rx_packet *pkt = rxb_addr(rxb);
883 struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
884 u8 rate = beacon->beacon_notify_hdr.rate;
886 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
887 "tsf %d %d rate %d\n",
888 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
889 beacon->beacon_notify_hdr.failure_frame,
890 le32_to_cpu(beacon->ibss_mgr_status),
891 le32_to_cpu(beacon->high_tsf),
892 le32_to_cpu(beacon->low_tsf), rate);
895 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
896 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
897 queue_work(priv->workqueue, &priv->beacon_update);
900 /* Handle notification from uCode that card's power state is changing
901 * due to software, hardware, or critical temperature RFKILL */
902 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
903 struct iwl_rx_mem_buffer *rxb)
905 struct iwl_rx_packet *pkt = rxb_addr(rxb);
906 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
907 unsigned long status = priv->status;
909 IWL_WARN(priv, "Card state received: HW:%s SW:%s\n",
910 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
911 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
913 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
914 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
916 if (flags & HW_CARD_DISABLED)
917 set_bit(STATUS_RF_KILL_HW, &priv->status);
919 clear_bit(STATUS_RF_KILL_HW, &priv->status);
922 iwl_scan_cancel(priv);
924 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
925 test_bit(STATUS_RF_KILL_HW, &priv->status)))
926 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
927 test_bit(STATUS_RF_KILL_HW, &priv->status));
929 wake_up_interruptible(&priv->wait_command_queue);
933 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
935 * Setup the RX handlers for each of the reply types sent from the uCode
938 * This function chains into the hardware specific files for them to setup
939 * any hardware specific handlers as well.
941 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
943 priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
944 priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
945 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
946 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
947 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
948 iwl_rx_spectrum_measure_notif;
949 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
950 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
951 iwl_rx_pm_debug_statistics_notif;
952 priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
955 * The same handler is used for both the REPLY to a discrete
956 * statistics request from the host as well as for the periodic
957 * statistics notifications (after received beacons) from the uCode.
959 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
960 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
962 iwl_setup_rx_scan_handlers(priv);
963 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
965 /* Set up hardware specific Rx handlers */
966 iwl3945_hw_rx_handler_setup(priv);
969 /************************** RX-FUNCTIONS ****************************/
971 * Rx theory of operation
973 * The host allocates 32 DMA target addresses and passes the host address
974 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
978 * The host/firmware share two index registers for managing the Rx buffers.
980 * The READ index maps to the first position that the firmware may be writing
981 * to -- the driver can read up to (but not including) this position and get
983 * The READ index is managed by the firmware once the card is enabled.
985 * The WRITE index maps to the last position the driver has read from -- the
986 * position preceding WRITE is the last slot the firmware can place a packet.
988 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
991 * During initialization, the host sets up the READ queue position to the first
992 * INDEX position, and WRITE to the last (READ - 1 wrapped)
994 * When the firmware places a packet in a buffer, it will advance the READ index
995 * and fire the RX interrupt. The driver can then query the READ index and
996 * process as many packets as possible, moving the WRITE index forward as it
997 * resets the Rx queue buffers with new memory.
999 * The management in the driver is as follows:
1000 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
1001 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
1002 * to replenish the iwl->rxq->rx_free.
1003 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
1004 * iwl->rxq is replenished and the READ INDEX is updated (updating the
1005 * 'processed' and 'read' driver indexes as well)
1006 * + A received packet is processed and handed to the kernel network stack,
1007 * detached from the iwl->rxq. The driver 'processed' index is updated.
1008 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
1009 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
1010 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
1011 * were enough free buffers and RX_STALLED is set it is cleared.
1016 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
1017 * iwl3945_rx_queue_restock
1018 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
1019 * queue, updates firmware pointers, and updates
1020 * the WRITE index. If insufficient rx_free buffers
1021 * are available, schedules iwl3945_rx_replenish
1023 * -- enable interrupts --
1024 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
1025 * READ INDEX, detaching the SKB from the pool.
1026 * Moves the packet buffer from queue to rx_used.
1027 * Calls iwl3945_rx_queue_restock to refill any empty
1034 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
1036 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
1037 dma_addr_t dma_addr)
1039 return cpu_to_le32((u32)dma_addr);
1043 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
1045 * If there are slots in the RX queue that need to be restocked,
1046 * and we have free pre-allocated buffers, fill the ranks as much
1047 * as we can, pulling from rx_free.
1049 * This moves the 'write' index forward to catch up with 'processed', and
1050 * also updates the memory address in the firmware to reference the new
1053 static void iwl3945_rx_queue_restock(struct iwl_priv *priv)
1055 struct iwl_rx_queue *rxq = &priv->rxq;
1056 struct list_head *element;
1057 struct iwl_rx_mem_buffer *rxb;
1058 unsigned long flags;
1061 spin_lock_irqsave(&rxq->lock, flags);
1062 write = rxq->write & ~0x7;
1063 while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
1064 /* Get next free Rx buffer, remove from free list */
1065 element = rxq->rx_free.next;
1066 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1069 /* Point to Rx buffer via next RBD in circular buffer */
1070 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->page_dma);
1071 rxq->queue[rxq->write] = rxb;
1072 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
1075 spin_unlock_irqrestore(&rxq->lock, flags);
1076 /* If the pre-allocated buffer pool is dropping low, schedule to
1078 if (rxq->free_count <= RX_LOW_WATERMARK)
1079 queue_work(priv->workqueue, &priv->rx_replenish);
1082 /* If we've added more space for the firmware to place data, tell it.
1083 * Increment device's write pointer in multiples of 8. */
1084 if ((rxq->write_actual != (rxq->write & ~0x7))
1085 || (abs(rxq->write - rxq->read) > 7)) {
1086 spin_lock_irqsave(&rxq->lock, flags);
1087 rxq->need_update = 1;
1088 spin_unlock_irqrestore(&rxq->lock, flags);
1089 iwl_rx_queue_update_write_ptr(priv, rxq);
1094 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1096 * When moving to rx_free an SKB is allocated for the slot.
1098 * Also restock the Rx queue via iwl3945_rx_queue_restock.
1099 * This is called as a scheduled work item (except for during initialization)
1101 static void iwl3945_rx_allocate(struct iwl_priv *priv, gfp_t priority)
1103 struct iwl_rx_queue *rxq = &priv->rxq;
1104 struct list_head *element;
1105 struct iwl_rx_mem_buffer *rxb;
1107 unsigned long flags;
1108 gfp_t gfp_mask = priority;
1111 spin_lock_irqsave(&rxq->lock, flags);
1113 if (list_empty(&rxq->rx_used)) {
1114 spin_unlock_irqrestore(&rxq->lock, flags);
1117 spin_unlock_irqrestore(&rxq->lock, flags);
1119 if (rxq->free_count > RX_LOW_WATERMARK)
1120 gfp_mask |= __GFP_NOWARN;
1122 if (priv->hw_params.rx_page_order > 0)
1123 gfp_mask |= __GFP_COMP;
1125 /* Alloc a new receive buffer */
1126 page = alloc_pages(gfp_mask, priv->hw_params.rx_page_order);
1128 if (net_ratelimit())
1129 IWL_DEBUG_INFO(priv, "Failed to allocate SKB buffer.\n");
1130 if ((rxq->free_count <= RX_LOW_WATERMARK) &&
1132 IWL_CRIT(priv, "Failed to allocate SKB buffer with %s. Only %u free buffers remaining.\n",
1133 priority == GFP_ATOMIC ? "GFP_ATOMIC" : "GFP_KERNEL",
1135 /* We don't reschedule replenish work here -- we will
1136 * call the restock method and if it still needs
1137 * more buffers it will schedule replenish */
1141 spin_lock_irqsave(&rxq->lock, flags);
1142 if (list_empty(&rxq->rx_used)) {
1143 spin_unlock_irqrestore(&rxq->lock, flags);
1144 __free_pages(page, priv->hw_params.rx_page_order);
1147 element = rxq->rx_used.next;
1148 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1150 spin_unlock_irqrestore(&rxq->lock, flags);
1153 /* Get physical address of RB/SKB */
1154 rxb->page_dma = pci_map_page(priv->pci_dev, page, 0,
1155 PAGE_SIZE << priv->hw_params.rx_page_order,
1156 PCI_DMA_FROMDEVICE);
1158 spin_lock_irqsave(&rxq->lock, flags);
1160 list_add_tail(&rxb->list, &rxq->rx_free);
1162 priv->alloc_rxb_page++;
1164 spin_unlock_irqrestore(&rxq->lock, flags);
1168 void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1170 unsigned long flags;
1172 spin_lock_irqsave(&rxq->lock, flags);
1173 INIT_LIST_HEAD(&rxq->rx_free);
1174 INIT_LIST_HEAD(&rxq->rx_used);
1175 /* Fill the rx_used queue with _all_ of the Rx buffers */
1176 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
1177 /* In the reset function, these buffers may have been allocated
1178 * to an SKB, so we need to unmap and free potential storage */
1179 if (rxq->pool[i].page != NULL) {
1180 pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
1181 PAGE_SIZE << priv->hw_params.rx_page_order,
1182 PCI_DMA_FROMDEVICE);
1183 __iwl_free_pages(priv, rxq->pool[i].page);
1184 rxq->pool[i].page = NULL;
1186 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
1189 /* Set us so that we have processed and used all buffers, but have
1190 * not restocked the Rx queue with fresh buffers */
1191 rxq->read = rxq->write = 0;
1192 rxq->write_actual = 0;
1193 rxq->free_count = 0;
1194 spin_unlock_irqrestore(&rxq->lock, flags);
1197 void iwl3945_rx_replenish(void *data)
1199 struct iwl_priv *priv = data;
1200 unsigned long flags;
1202 iwl3945_rx_allocate(priv, GFP_KERNEL);
1204 spin_lock_irqsave(&priv->lock, flags);
1205 iwl3945_rx_queue_restock(priv);
1206 spin_unlock_irqrestore(&priv->lock, flags);
1209 static void iwl3945_rx_replenish_now(struct iwl_priv *priv)
1211 iwl3945_rx_allocate(priv, GFP_ATOMIC);
1213 iwl3945_rx_queue_restock(priv);
1217 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1218 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1219 * This free routine walks the list of POOL entries and if SKB is set to
1220 * non NULL it is unmapped and freed
1222 static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1225 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
1226 if (rxq->pool[i].page != NULL) {
1227 pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
1228 PAGE_SIZE << priv->hw_params.rx_page_order,
1229 PCI_DMA_FROMDEVICE);
1230 __iwl_free_pages(priv, rxq->pool[i].page);
1231 rxq->pool[i].page = NULL;
1235 dma_free_coherent(&priv->pci_dev->dev, 4 * RX_QUEUE_SIZE, rxq->bd,
1237 dma_free_coherent(&priv->pci_dev->dev, sizeof(struct iwl_rb_status),
1238 rxq->rb_stts, rxq->rb_stts_dma);
1240 rxq->rb_stts = NULL;
1244 /* Convert linear signal-to-noise ratio into dB */
1245 static u8 ratio2dB[100] = {
1246 /* 0 1 2 3 4 5 6 7 8 9 */
1247 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1248 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1249 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1250 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1251 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1252 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1253 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1254 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1255 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1256 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1259 /* Calculates a relative dB value from a ratio of linear
1260 * (i.e. not dB) signal levels.
1261 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1262 int iwl3945_calc_db_from_ratio(int sig_ratio)
1264 /* 1000:1 or higher just report as 60 dB */
1265 if (sig_ratio >= 1000)
1268 /* 100:1 or higher, divide by 10 and use table,
1269 * add 20 dB to make up for divide by 10 */
1270 if (sig_ratio >= 100)
1271 return 20 + (int)ratio2dB[sig_ratio/10];
1273 /* We shouldn't see this */
1277 /* Use table for ratios 1:1 - 99:1 */
1278 return (int)ratio2dB[sig_ratio];
1282 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1284 * Uses the priv->rx_handlers callback function array to invoke
1285 * the appropriate handlers, including command responses,
1286 * frame-received notifications, and other notifications.
1288 static void iwl3945_rx_handle(struct iwl_priv *priv)
1290 struct iwl_rx_mem_buffer *rxb;
1291 struct iwl_rx_packet *pkt;
1292 struct iwl_rx_queue *rxq = &priv->rxq;
1295 unsigned long flags;
1298 int total_empty = 0;
1300 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1301 * buffer that the driver may process (last buffer filled by ucode). */
1302 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
1305 /* calculate total frames need to be restock after handling RX */
1306 total_empty = r - rxq->write_actual;
1307 if (total_empty < 0)
1308 total_empty += RX_QUEUE_SIZE;
1310 if (total_empty > (RX_QUEUE_SIZE / 2))
1312 /* Rx interrupt, but nothing sent from uCode */
1314 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
1317 rxb = rxq->queue[i];
1319 /* If an RXB doesn't have a Rx queue slot associated with it,
1320 * then a bug has been introduced in the queue refilling
1321 * routines -- catch it here */
1322 BUG_ON(rxb == NULL);
1324 rxq->queue[i] = NULL;
1326 pci_unmap_page(priv->pci_dev, rxb->page_dma,
1327 PAGE_SIZE << priv->hw_params.rx_page_order,
1328 PCI_DMA_FROMDEVICE);
1329 pkt = rxb_addr(rxb);
1331 trace_iwlwifi_dev_rx(priv, pkt,
1332 le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK);
1334 /* Reclaim a command buffer only if this packet is a response
1335 * to a (driver-originated) command.
1336 * If the packet (e.g. Rx frame) originated from uCode,
1337 * there is no command buffer to reclaim.
1338 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1339 * but apparently a few don't get set; catch them here. */
1340 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1341 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1342 (pkt->hdr.cmd != REPLY_TX);
1344 /* Based on type of command response or notification,
1345 * handle those that need handling via function in
1346 * rx_handlers table. See iwl3945_setup_rx_handlers() */
1347 if (priv->rx_handlers[pkt->hdr.cmd]) {
1348 IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r, i,
1349 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1350 priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
1351 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1353 /* No handling needed */
1355 "r %d i %d No handler needed for %s, 0x%02x\n",
1356 r, i, get_cmd_string(pkt->hdr.cmd),
1361 * XXX: After here, we should always check rxb->page
1362 * against NULL before touching it or its virtual
1363 * memory (pkt). Because some rx_handler might have
1364 * already taken or freed the pages.
1368 /* Invoke any callbacks, transfer the buffer to caller,
1369 * and fire off the (possibly) blocking iwl_send_cmd()
1370 * as we reclaim the driver command queue */
1372 iwl_tx_cmd_complete(priv, rxb);
1374 IWL_WARN(priv, "Claim null rxb?\n");
1377 /* Reuse the page if possible. For notification packets and
1378 * SKBs that fail to Rx correctly, add them back into the
1379 * rx_free list for reuse later. */
1380 spin_lock_irqsave(&rxq->lock, flags);
1381 if (rxb->page != NULL) {
1382 rxb->page_dma = pci_map_page(priv->pci_dev, rxb->page,
1383 0, PAGE_SIZE << priv->hw_params.rx_page_order,
1384 PCI_DMA_FROMDEVICE);
1385 list_add_tail(&rxb->list, &rxq->rx_free);
1388 list_add_tail(&rxb->list, &rxq->rx_used);
1390 spin_unlock_irqrestore(&rxq->lock, flags);
1392 i = (i + 1) & RX_QUEUE_MASK;
1393 /* If there are a lot of unused frames,
1394 * restock the Rx queue so ucode won't assert. */
1399 iwl3945_rx_replenish_now(priv);
1405 /* Backtrack one entry */
1408 iwl3945_rx_replenish_now(priv);
1410 iwl3945_rx_queue_restock(priv);
1413 /* call this function to flush any scheduled tasklet */
1414 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1416 /* wait to make sure we flush pending tasklet*/
1417 synchronize_irq(priv->pci_dev->irq);
1418 tasklet_kill(&priv->irq_tasklet);
1421 static const char *desc_lookup(int i)
1429 return "BAD_CHECKSUM";
1431 return "NMI_INTERRUPT";
1435 return "FATAL_ERROR";
1441 #define ERROR_START_OFFSET (1 * sizeof(u32))
1442 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1444 void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
1447 u32 desc, time, count, base, data1;
1448 u32 blink1, blink2, ilink1, ilink2;
1450 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1452 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1453 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1458 count = iwl_read_targ_mem(priv, base);
1460 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1461 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1462 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1463 priv->status, count);
1466 IWL_ERR(priv, "Desc Time asrtPC blink2 "
1467 "ilink1 nmiPC Line\n");
1468 for (i = ERROR_START_OFFSET;
1469 i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
1470 i += ERROR_ELEM_SIZE) {
1471 desc = iwl_read_targ_mem(priv, base + i);
1473 iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
1475 iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
1477 iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
1479 iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
1481 iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
1483 iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
1486 "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1487 desc_lookup(desc), desc, time, blink1, blink2,
1488 ilink1, ilink2, data1);
1489 trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, 0,
1490 0, blink1, blink2, ilink1, ilink2);
1494 #define EVENT_START_OFFSET (6 * sizeof(u32))
1497 * iwl3945_print_event_log - Dump error event log to syslog
1500 static int iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
1501 u32 num_events, u32 mode,
1502 int pos, char **buf, size_t bufsz)
1505 u32 base; /* SRAM byte address of event log header */
1506 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1507 u32 ptr; /* SRAM byte address of log data */
1508 u32 ev, time, data; /* event log data */
1509 unsigned long reg_flags;
1511 if (num_events == 0)
1514 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1517 event_size = 2 * sizeof(u32);
1519 event_size = 3 * sizeof(u32);
1521 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1523 /* Make sure device is powered up for SRAM reads */
1524 spin_lock_irqsave(&priv->reg_lock, reg_flags);
1525 iwl_grab_nic_access(priv);
1527 /* Set starting address; reads will auto-increment */
1528 _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
1531 /* "time" is actually "data" for mode 0 (no timestamp).
1532 * place event id # at far right for easier visual parsing. */
1533 for (i = 0; i < num_events; i++) {
1534 ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1535 time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1539 pos += scnprintf(*buf + pos, bufsz - pos,
1543 IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
1544 trace_iwlwifi_dev_ucode_event(priv, 0,
1548 data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1550 pos += scnprintf(*buf + pos, bufsz - pos,
1551 "%010u:0x%08x:%04u\n",
1554 IWL_ERR(priv, "%010u\t0x%08x\t%04u\n",
1556 trace_iwlwifi_dev_ucode_event(priv, time,
1562 /* Allow device to power down */
1563 iwl_release_nic_access(priv);
1564 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
1569 * iwl3945_print_last_event_logs - Dump the newest # of event log to syslog
1571 static int iwl3945_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1572 u32 num_wraps, u32 next_entry,
1574 int pos, char **buf, size_t bufsz)
1577 * display the newest DEFAULT_LOG_ENTRIES entries
1578 * i.e the entries just before the next ont that uCode would fill.
1581 if (next_entry < size) {
1582 pos = iwl3945_print_event_log(priv,
1583 capacity - (size - next_entry),
1584 size - next_entry, mode,
1586 pos = iwl3945_print_event_log(priv, 0,
1590 pos = iwl3945_print_event_log(priv, next_entry - size,
1594 if (next_entry < size)
1595 pos = iwl3945_print_event_log(priv, 0,
1599 pos = iwl3945_print_event_log(priv, next_entry - size,
1606 /* For sanity check only. Actual size is determined by uCode, typ. 512 */
1607 #define IWL3945_MAX_EVENT_LOG_SIZE (512)
1609 #define DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES (20)
1611 int iwl3945_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1612 char **buf, bool display)
1614 u32 base; /* SRAM byte address of event log header */
1615 u32 capacity; /* event log capacity in # entries */
1616 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1617 u32 num_wraps; /* # times uCode wrapped to top of log */
1618 u32 next_entry; /* index of next entry to be written by uCode */
1619 u32 size; /* # entries that we'll print */
1623 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1624 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1625 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1629 /* event log header */
1630 capacity = iwl_read_targ_mem(priv, base);
1631 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1632 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1633 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1635 if (capacity > IWL3945_MAX_EVENT_LOG_SIZE) {
1636 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
1637 capacity, IWL3945_MAX_EVENT_LOG_SIZE);
1638 capacity = IWL3945_MAX_EVENT_LOG_SIZE;
1641 if (next_entry > IWL3945_MAX_EVENT_LOG_SIZE) {
1642 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1643 next_entry, IWL3945_MAX_EVENT_LOG_SIZE);
1644 next_entry = IWL3945_MAX_EVENT_LOG_SIZE;
1647 size = num_wraps ? capacity : next_entry;
1649 /* bail out if nothing in log */
1651 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1655 #ifdef CONFIG_IWLWIFI_DEBUG
1656 if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log)
1657 size = (size > DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES)
1658 ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES : size;
1660 size = (size > DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES)
1661 ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES : size;
1664 IWL_ERR(priv, "Start IWL Event Log Dump: display last %d count\n",
1667 #ifdef CONFIG_IWLWIFI_DEBUG
1670 bufsz = capacity * 48;
1673 *buf = kmalloc(bufsz, GFP_KERNEL);
1677 if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
1678 /* if uCode has wrapped back to top of log,
1679 * start at the oldest entry,
1680 * i.e the next one that uCode would fill.
1683 pos = iwl3945_print_event_log(priv, next_entry,
1684 capacity - next_entry, mode,
1687 /* (then/else) start at top of log */
1688 pos = iwl3945_print_event_log(priv, 0, next_entry, mode,
1691 pos = iwl3945_print_last_event_logs(priv, capacity, num_wraps,
1692 next_entry, size, mode,
1695 pos = iwl3945_print_last_event_logs(priv, capacity, num_wraps,
1696 next_entry, size, mode,
1702 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
1704 u32 inta, handled = 0;
1706 unsigned long flags;
1707 #ifdef CONFIG_IWLWIFI_DEBUG
1711 spin_lock_irqsave(&priv->lock, flags);
1713 /* Ack/clear/reset pending uCode interrupts.
1714 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1715 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1716 inta = iwl_read32(priv, CSR_INT);
1717 iwl_write32(priv, CSR_INT, inta);
1719 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1720 * Any new interrupts that happen after this, either while we're
1721 * in this tasklet, or later, will show up in next ISR/tasklet. */
1722 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1723 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1725 #ifdef CONFIG_IWLWIFI_DEBUG
1726 if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1727 /* just for debug */
1728 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1729 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1730 inta, inta_mask, inta_fh);
1734 spin_unlock_irqrestore(&priv->lock, flags);
1736 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1737 * atomic, make sure that inta covers all the interrupts that
1738 * we've discovered, even if FH interrupt came in just after
1739 * reading CSR_INT. */
1740 if (inta_fh & CSR39_FH_INT_RX_MASK)
1741 inta |= CSR_INT_BIT_FH_RX;
1742 if (inta_fh & CSR39_FH_INT_TX_MASK)
1743 inta |= CSR_INT_BIT_FH_TX;
1745 /* Now service all interrupt bits discovered above. */
1746 if (inta & CSR_INT_BIT_HW_ERR) {
1747 IWL_ERR(priv, "Hardware error detected. Restarting.\n");
1749 /* Tell the device to stop sending interrupts */
1750 iwl_disable_interrupts(priv);
1752 priv->isr_stats.hw++;
1753 iwl_irq_handle_error(priv);
1755 handled |= CSR_INT_BIT_HW_ERR;
1760 #ifdef CONFIG_IWLWIFI_DEBUG
1761 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1762 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1763 if (inta & CSR_INT_BIT_SCD) {
1764 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1765 "the frame/frames.\n");
1766 priv->isr_stats.sch++;
1769 /* Alive notification via Rx interrupt will do the real work */
1770 if (inta & CSR_INT_BIT_ALIVE) {
1771 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1772 priv->isr_stats.alive++;
1776 /* Safely ignore these bits for debug checks below */
1777 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1779 /* Error detected by uCode */
1780 if (inta & CSR_INT_BIT_SW_ERR) {
1781 IWL_ERR(priv, "Microcode SW error detected. "
1782 "Restarting 0x%X.\n", inta);
1783 priv->isr_stats.sw++;
1784 priv->isr_stats.sw_err = inta;
1785 iwl_irq_handle_error(priv);
1786 handled |= CSR_INT_BIT_SW_ERR;
1789 /* uCode wakes up after power-down sleep */
1790 if (inta & CSR_INT_BIT_WAKEUP) {
1791 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1792 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1793 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1794 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1795 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1796 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1797 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1798 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1800 priv->isr_stats.wakeup++;
1801 handled |= CSR_INT_BIT_WAKEUP;
1804 /* All uCode command responses, including Tx command responses,
1805 * Rx "responses" (frame-received notification), and other
1806 * notifications from uCode come through here*/
1807 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1808 iwl3945_rx_handle(priv);
1809 priv->isr_stats.rx++;
1810 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1813 if (inta & CSR_INT_BIT_FH_TX) {
1814 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1815 priv->isr_stats.tx++;
1817 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
1818 iwl_write_direct32(priv, FH39_TCSR_CREDIT
1819 (FH39_SRVC_CHNL), 0x0);
1820 handled |= CSR_INT_BIT_FH_TX;
1823 if (inta & ~handled) {
1824 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1825 priv->isr_stats.unhandled++;
1828 if (inta & ~priv->inta_mask) {
1829 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1830 inta & ~priv->inta_mask);
1831 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
1834 /* Re-enable all interrupts */
1835 /* only Re-enable if disabled by irq */
1836 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1837 iwl_enable_interrupts(priv);
1839 #ifdef CONFIG_IWLWIFI_DEBUG
1840 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1841 inta = iwl_read32(priv, CSR_INT);
1842 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1843 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1844 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1845 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1850 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
1851 enum ieee80211_band band,
1852 u8 is_active, u8 n_probes,
1853 struct iwl3945_scan_channel *scan_ch)
1855 struct ieee80211_channel *chan;
1856 const struct ieee80211_supported_band *sband;
1857 const struct iwl_channel_info *ch_info;
1858 u16 passive_dwell = 0;
1859 u16 active_dwell = 0;
1862 sband = iwl_get_hw_mode(priv, band);
1866 active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
1867 passive_dwell = iwl_get_passive_dwell_time(priv, band);
1869 if (passive_dwell <= active_dwell)
1870 passive_dwell = active_dwell + 1;
1872 for (i = 0, added = 0; i < priv->scan_request->n_channels; i++) {
1873 chan = priv->scan_request->channels[i];
1875 if (chan->band != band)
1878 scan_ch->channel = chan->hw_value;
1880 ch_info = iwl_get_channel_info(priv, band, scan_ch->channel);
1881 if (!is_channel_valid(ch_info)) {
1882 IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n",
1887 scan_ch->active_dwell = cpu_to_le16(active_dwell);
1888 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
1889 /* If passive , set up for auto-switch
1890 * and use long active_dwell time.
1892 if (!is_active || is_channel_passive(ch_info) ||
1893 (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
1894 scan_ch->type = 0; /* passive */
1895 if (IWL_UCODE_API(priv->ucode_ver) == 1)
1896 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
1898 scan_ch->type = 1; /* active */
1901 /* Set direct probe bits. These may be used both for active
1902 * scan channels (probes gets sent right away),
1903 * or for passive channels (probes get se sent only after
1904 * hearing clear Rx packet).*/
1905 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
1907 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1909 /* uCode v1 does not allow setting direct probe bits on
1910 * passive channel. */
1911 if ((scan_ch->type & 1) && n_probes)
1912 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1915 /* Set txpower levels to defaults */
1916 scan_ch->tpc.dsp_atten = 110;
1917 /* scan_pwr_info->tpc.dsp_atten; */
1919 /*scan_pwr_info->tpc.tx_gain; */
1920 if (band == IEEE80211_BAND_5GHZ)
1921 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
1923 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
1924 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
1926 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
1930 IWL_DEBUG_SCAN(priv, "Scanning %d [%s %d]\n",
1932 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
1933 (scan_ch->type & 1) ?
1934 active_dwell : passive_dwell);
1940 IWL_DEBUG_SCAN(priv, "total channels to scan %d \n", added);
1944 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
1945 struct ieee80211_rate *rates)
1949 for (i = 0; i < IWL_RATE_COUNT; i++) {
1950 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
1951 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1952 rates[i].hw_value_short = i;
1954 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
1956 * If CCK != 1M then set short preamble rate flag.
1958 rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
1959 0 : IEEE80211_RATE_SHORT_PREAMBLE;
1964 /******************************************************************************
1966 * uCode download functions
1968 ******************************************************************************/
1970 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
1972 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1973 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1974 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1975 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1976 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1977 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1981 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
1982 * looking at all data.
1984 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
1991 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1993 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1994 IWL39_RTC_INST_LOWER_BOUND);
1997 for (; len > 0; len -= sizeof(u32), image++) {
1998 /* read data comes through single port, auto-incr addr */
1999 /* NOTE: Use the debugless read so we don't flood kernel log
2000 * if IWL_DL_IO is set */
2001 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2002 if (val != le32_to_cpu(*image)) {
2003 IWL_ERR(priv, "uCode INST section is invalid at "
2004 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2005 save_len - len, val, le32_to_cpu(*image));
2015 IWL_DEBUG_INFO(priv,
2016 "ucode image in INSTRUCTION memory is good\n");
2023 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
2024 * using sample data 100 bytes apart. If these sample points are good,
2025 * it's a pretty good bet that everything between them is good, too.
2027 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
2034 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2036 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
2037 /* read data comes through single port, auto-incr addr */
2038 /* NOTE: Use the debugless read so we don't flood kernel log
2039 * if IWL_DL_IO is set */
2040 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2041 i + IWL39_RTC_INST_LOWER_BOUND);
2042 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2043 if (val != le32_to_cpu(*image)) {
2044 #if 0 /* Enable this if you want to see details */
2045 IWL_ERR(priv, "uCode INST section is invalid at "
2046 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2061 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2062 * and verify its contents
2064 static int iwl3945_verify_ucode(struct iwl_priv *priv)
2071 image = (__le32 *)priv->ucode_boot.v_addr;
2072 len = priv->ucode_boot.len;
2073 rc = iwl3945_verify_inst_sparse(priv, image, len);
2075 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2079 /* Try initialize */
2080 image = (__le32 *)priv->ucode_init.v_addr;
2081 len = priv->ucode_init.len;
2082 rc = iwl3945_verify_inst_sparse(priv, image, len);
2084 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2088 /* Try runtime/protocol */
2089 image = (__le32 *)priv->ucode_code.v_addr;
2090 len = priv->ucode_code.len;
2091 rc = iwl3945_verify_inst_sparse(priv, image, len);
2093 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2097 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2099 /* Since nothing seems to match, show first several data entries in
2100 * instruction SRAM, so maybe visual inspection will give a clue.
2101 * Selection of bootstrap image (vs. other images) is arbitrary. */
2102 image = (__le32 *)priv->ucode_boot.v_addr;
2103 len = priv->ucode_boot.len;
2104 rc = iwl3945_verify_inst_full(priv, image, len);
2109 static void iwl3945_nic_start(struct iwl_priv *priv)
2111 /* Remove all resets to allow NIC to operate */
2112 iwl_write32(priv, CSR_RESET, 0);
2116 * iwl3945_read_ucode - Read uCode images from disk file.
2118 * Copy into buffers for card to fetch via bus-mastering
2120 static int iwl3945_read_ucode(struct iwl_priv *priv)
2122 const struct iwl_ucode_header *ucode;
2123 int ret = -EINVAL, index;
2124 const struct firmware *ucode_raw;
2125 /* firmware file name contains uCode/driver compatibility version */
2126 const char *name_pre = priv->cfg->fw_name_pre;
2127 const unsigned int api_max = priv->cfg->ucode_api_max;
2128 const unsigned int api_min = priv->cfg->ucode_api_min;
2132 u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
2134 /* Ask kernel firmware_class module to get the boot firmware off disk.
2135 * request_firmware() is synchronous, file is in memory on return. */
2136 for (index = api_max; index >= api_min; index--) {
2137 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
2138 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
2140 IWL_ERR(priv, "%s firmware file req failed: %d\n",
2147 if (index < api_max)
2148 IWL_ERR(priv, "Loaded firmware %s, "
2149 "which is deprecated. "
2150 " Please use API v%u instead.\n",
2152 IWL_DEBUG_INFO(priv, "Got firmware '%s' file "
2153 "(%zd bytes) from disk\n",
2154 buf, ucode_raw->size);
2162 /* Make sure that we got at least our header! */
2163 if (ucode_raw->size < priv->cfg->ops->ucode->get_header_size(1)) {
2164 IWL_ERR(priv, "File size way too small!\n");
2169 /* Data from ucode file: header followed by uCode images */
2170 ucode = (struct iwl_ucode_header *)ucode_raw->data;
2172 priv->ucode_ver = le32_to_cpu(ucode->ver);
2173 api_ver = IWL_UCODE_API(priv->ucode_ver);
2174 inst_size = priv->cfg->ops->ucode->get_inst_size(ucode, api_ver);
2175 data_size = priv->cfg->ops->ucode->get_data_size(ucode, api_ver);
2176 init_size = priv->cfg->ops->ucode->get_init_size(ucode, api_ver);
2178 priv->cfg->ops->ucode->get_init_data_size(ucode, api_ver);
2179 boot_size = priv->cfg->ops->ucode->get_boot_size(ucode, api_ver);
2180 src = priv->cfg->ops->ucode->get_data(ucode, api_ver);
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 */
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",
2190 priv->ucode_ver = 0;
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",
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));
2206 snprintf(priv->hw->wiphy->fw_version,
2207 sizeof(priv->hw->wiphy->fw_version),
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));
2214 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2216 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
2218 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
2220 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
2222 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
2224 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
2228 /* Verify size of file vs. image size info in file's header */
2229 if (ucode_raw->size != priv->cfg->ops->ucode->get_header_size(api_ver) +
2230 inst_size + data_size + init_size +
2231 init_data_size + boot_size) {
2233 IWL_DEBUG_INFO(priv,
2234 "uCode file size %zd does not match expected size\n",
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",
2248 if (data_size > IWL39_MAX_DATA_SIZE) {
2249 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
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",
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",
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",
2276 /* Allocate ucode buffers for card's bus-master loading ... */
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);
2284 priv->ucode_data.len = data_size;
2285 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2287 priv->ucode_data_backup.len = data_size;
2288 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2290 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2291 !priv->ucode_data_backup.v_addr)
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);
2299 priv->ucode_init_data.len = init_data_size;
2300 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2302 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2306 /* Bootstrap (instructions only, no data) */
2308 priv->ucode_boot.len = boot_size;
2309 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2311 if (!priv->ucode_boot.v_addr)
2315 /* Copy images into buffers for card's bus-master reads ... */
2317 /* Runtime instructions (first block of data in file) */
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);
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);
2327 /* Runtime data (2nd block)
2328 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
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);
2336 /* Initialization instructions (3rd block) */
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);
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);
2354 /* Bootstrap instructions (5th block) */
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);
2360 /* We have our copies now, allow OS release its copies */
2361 release_firmware(ucode_raw);
2365 IWL_ERR(priv, "failed to allocate pci memory\n");
2367 iwl3945_dealloc_ucode_pci(priv);
2370 release_firmware(ucode_raw);
2378 * iwl3945_set_ucode_ptrs - Set uCode address location
2380 * Tell initialization uCode where to find runtime uCode.
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.
2386 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
2391 /* bits 31:0 for 3945 */
2392 pinst = priv->ucode_code.p_addr;
2393 pdata = priv->ucode_data_backup.p_addr;
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);
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);
2406 IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
2412 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2414 * Called after REPLY_ALIVE notification received from "initialize" uCode.
2416 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2418 static void iwl3945_init_alive_start(struct iwl_priv *priv)
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");
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");
2438 /* Send pointers to protocol/runtime uCode image ... init code will
2439 * load and launch runtime uCode, which will send us another "Alive"
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");
2451 queue_work(priv->workqueue, &priv->restart);
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()).
2459 static void iwl3945_alive_start(struct iwl_priv *priv)
2461 int thermal_spin = 0;
2464 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
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");
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");
2483 iwl_clear_stations_table(priv);
2485 rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
2486 IWL_DEBUG_INFO(priv, "RFKILL status: 0x%x\n", rfkill);
2489 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2490 /* if RFKILL is not on, then wait for thermal
2491 * sensor in adapter to kick in */
2492 while (iwl3945_hw_get_temperature(priv) == 0) {
2498 IWL_DEBUG_INFO(priv, "Thermal calibration took %dus\n",
2501 set_bit(STATUS_RF_KILL_HW, &priv->status);
2503 /* After the ALIVE response, we can send commands to 3945 uCode */
2504 set_bit(STATUS_ALIVE, &priv->status);
2506 if (iwl_is_rfkill(priv))
2509 ieee80211_wake_queues(priv->hw);
2511 priv->active_rate = IWL_RATES_MASK;
2513 iwl_power_update_mode(priv, true);
2515 if (iwl_is_associated(priv)) {
2516 struct iwl3945_rxon_cmd *active_rxon =
2517 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
2519 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2520 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2522 /* Initialize our rx_config data */
2523 iwl_connection_init_rx_config(priv, priv->iw_mode);
2526 /* Configure Bluetooth device coexistence support */
2527 iwl_send_bt_config(priv);
2529 /* Configure the adapter for unassociated operation */
2530 iwlcore_commit_rxon(priv);
2532 iwl3945_reg_txpower_periodic(priv);
2534 iwl_leds_init(priv);
2536 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2537 set_bit(STATUS_READY, &priv->status);
2538 wake_up_interruptible(&priv->wait_command_queue);
2540 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2541 iwl_set_mode(priv, priv->iw_mode);
2546 queue_work(priv->workqueue, &priv->restart);
2549 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
2551 static void __iwl3945_down(struct iwl_priv *priv)
2553 unsigned long flags;
2554 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2555 struct ieee80211_conf *conf = NULL;
2557 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2559 conf = ieee80211_get_hw_conf(priv->hw);
2562 set_bit(STATUS_EXIT_PENDING, &priv->status);
2564 iwl_clear_stations_table(priv);
2566 /* Unblock any waiting calls */
2567 wake_up_interruptible_all(&priv->wait_command_queue);
2569 /* Wipe out the EXIT_PENDING status bit if we are not actually
2570 * exiting the module */
2572 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2574 /* stop and reset the on-board processor */
2575 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2577 /* tell the device to stop sending interrupts */
2578 spin_lock_irqsave(&priv->lock, flags);
2579 iwl_disable_interrupts(priv);
2580 spin_unlock_irqrestore(&priv->lock, flags);
2581 iwl_synchronize_irq(priv);
2583 if (priv->mac80211_registered)
2584 ieee80211_stop_queues(priv->hw);
2586 /* If we have not previously called iwl3945_init() then
2587 * clear all bits but the RF Kill bits and return */
2588 if (!iwl_is_init(priv)) {
2589 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2591 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2592 STATUS_GEO_CONFIGURED |
2593 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2594 STATUS_EXIT_PENDING;
2598 /* ...otherwise clear out all the status bits but the RF Kill
2599 * bit and continue taking the NIC down. */
2600 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2602 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2603 STATUS_GEO_CONFIGURED |
2604 test_bit(STATUS_FW_ERROR, &priv->status) <<
2606 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2607 STATUS_EXIT_PENDING;
2609 iwl3945_hw_txq_ctx_stop(priv);
2610 iwl3945_hw_rxq_stop(priv);
2612 /* Power-down device's busmaster DMA clocks */
2613 iwl_write_prph(priv, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT);
2616 /* Stop the device, and put it in low power state */
2617 priv->cfg->ops->lib->apm_ops.stop(priv);
2620 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2622 if (priv->ibss_beacon)
2623 dev_kfree_skb(priv->ibss_beacon);
2624 priv->ibss_beacon = NULL;
2626 /* clear out any free frames */
2627 iwl3945_clear_free_frames(priv);
2630 static void iwl3945_down(struct iwl_priv *priv)
2632 mutex_lock(&priv->mutex);
2633 __iwl3945_down(priv);
2634 mutex_unlock(&priv->mutex);
2636 iwl3945_cancel_deferred_work(priv);
2639 #define MAX_HW_RESTARTS 5
2641 static int __iwl3945_up(struct iwl_priv *priv)
2645 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2646 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2650 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2651 IWL_ERR(priv, "ucode not available for device bring up\n");
2655 /* If platform's RF_KILL switch is NOT set to KILL */
2656 if (iwl_read32(priv, CSR_GP_CNTRL) &
2657 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2658 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2660 set_bit(STATUS_RF_KILL_HW, &priv->status);
2661 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2665 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2667 rc = iwl3945_hw_nic_init(priv);
2669 IWL_ERR(priv, "Unable to int nic\n");
2673 /* make sure rfkill handshake bits are cleared */
2674 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2675 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2676 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2678 /* clear (again), then enable host interrupts */
2679 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2680 iwl_enable_interrupts(priv);
2682 /* really 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, CSR_UCODE_SW_BIT_RFKILL);
2686 /* Copy original ucode data image from disk into backup cache.
2687 * This will be used to initialize the on-board processor's
2688 * data SRAM for a clean start when the runtime program first loads. */
2689 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2690 priv->ucode_data.len);
2692 /* We return success when we resume from suspend and rf_kill is on. */
2693 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
2696 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2698 iwl_clear_stations_table(priv);
2700 /* load bootstrap state machine,
2701 * load bootstrap program into processor's memory,
2702 * prepare to load the "initialize" uCode */
2703 priv->cfg->ops->lib->load_ucode(priv);
2707 "Unable to set up bootstrap uCode: %d\n", rc);
2711 /* start card; "initialize" will load runtime ucode */
2712 iwl3945_nic_start(priv);
2714 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2719 set_bit(STATUS_EXIT_PENDING, &priv->status);
2720 __iwl3945_down(priv);
2721 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2723 /* tried to restart and config the device for as long as our
2724 * patience could withstand */
2725 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2730 /*****************************************************************************
2732 * Workqueue callbacks
2734 *****************************************************************************/
2736 static void iwl3945_bg_init_alive_start(struct work_struct *data)
2738 struct iwl_priv *priv =
2739 container_of(data, struct iwl_priv, init_alive_start.work);
2741 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2744 mutex_lock(&priv->mutex);
2745 iwl3945_init_alive_start(priv);
2746 mutex_unlock(&priv->mutex);
2749 static void iwl3945_bg_alive_start(struct work_struct *data)
2751 struct iwl_priv *priv =
2752 container_of(data, struct iwl_priv, alive_start.work);
2754 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2757 mutex_lock(&priv->mutex);
2758 iwl3945_alive_start(priv);
2759 mutex_unlock(&priv->mutex);
2763 * 3945 cannot interrupt driver when hardware rf kill switch toggles;
2764 * driver must poll CSR_GP_CNTRL_REG register for change. This register
2765 * *is* readable even when device has been SW_RESET into low power mode
2766 * (e.g. during RF KILL).
2768 static void iwl3945_rfkill_poll(struct work_struct *data)
2770 struct iwl_priv *priv =
2771 container_of(data, struct iwl_priv, _3945.rfkill_poll.work);
2772 bool old_rfkill = test_bit(STATUS_RF_KILL_HW, &priv->status);
2773 bool new_rfkill = !(iwl_read32(priv, CSR_GP_CNTRL)
2774 & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW);
2776 if (new_rfkill != old_rfkill) {
2778 set_bit(STATUS_RF_KILL_HW, &priv->status);
2780 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2782 wiphy_rfkill_set_hw_state(priv->hw->wiphy, new_rfkill);
2784 IWL_DEBUG_RF_KILL(priv, "RF_KILL bit toggled to %s.\n",
2785 new_rfkill ? "disable radio" : "enable radio");
2788 /* Keep this running, even if radio now enabled. This will be
2789 * cancelled in mac_start() if system decides to start again */
2790 queue_delayed_work(priv->workqueue, &priv->_3945.rfkill_poll,
2791 round_jiffies_relative(2 * HZ));
2795 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
2796 static void iwl3945_bg_request_scan(struct work_struct *data)
2798 struct iwl_priv *priv =
2799 container_of(data, struct iwl_priv, request_scan);
2800 struct iwl_host_cmd cmd = {
2801 .id = REPLY_SCAN_CMD,
2802 .len = sizeof(struct iwl3945_scan_cmd),
2803 .flags = CMD_SIZE_HUGE,
2806 struct iwl3945_scan_cmd *scan;
2807 struct ieee80211_conf *conf = NULL;
2809 enum ieee80211_band band;
2810 bool is_active = false;
2812 conf = ieee80211_get_hw_conf(priv->hw);
2814 mutex_lock(&priv->mutex);
2816 cancel_delayed_work(&priv->scan_check);
2818 if (!iwl_is_ready(priv)) {
2819 IWL_WARN(priv, "request scan called when driver not ready.\n");
2823 /* Make sure the scan wasn't canceled before this queued work
2824 * was given the chance to run... */
2825 if (!test_bit(STATUS_SCANNING, &priv->status))
2828 /* This should never be called or scheduled if there is currently
2829 * a scan active in the hardware. */
2830 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
2831 IWL_DEBUG_INFO(priv, "Multiple concurrent scan requests "
2832 "Ignoring second request.\n");
2837 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2838 IWL_DEBUG_SCAN(priv, "Aborting scan due to device shutdown\n");
2842 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2844 "Scan request while abort pending. Queuing.\n");
2848 if (iwl_is_rfkill(priv)) {
2849 IWL_DEBUG_HC(priv, "Aborting scan due to RF Kill activation\n");
2853 if (!test_bit(STATUS_READY, &priv->status)) {
2855 "Scan request while uninitialized. Queuing.\n");
2859 if (!priv->scan_bands) {
2860 IWL_DEBUG_HC(priv, "Aborting scan due to no requested bands\n");
2865 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
2866 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
2873 memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
2875 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
2876 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
2878 if (iwl_is_associated(priv)) {
2881 u32 suspend_time = 100;
2882 u32 scan_suspend_time = 100;
2883 unsigned long flags;
2885 IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
2887 spin_lock_irqsave(&priv->lock, flags);
2888 interval = priv->beacon_int;
2889 spin_unlock_irqrestore(&priv->lock, flags);
2891 scan->suspend_time = 0;
2892 scan->max_out_time = cpu_to_le32(200 * 1024);
2894 interval = suspend_time;
2896 * suspend time format:
2897 * 0-19: beacon interval in usec (time before exec.)
2899 * 24-31: number of beacons (suspend between channels)
2902 extra = (suspend_time / interval) << 24;
2903 scan_suspend_time = 0xFF0FFFFF &
2904 (extra | ((suspend_time % interval) * 1024));
2906 scan->suspend_time = cpu_to_le32(scan_suspend_time);
2907 IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
2908 scan_suspend_time, interval);
2911 if (priv->scan_request->n_ssids) {
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)
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);
2929 IWL_DEBUG_SCAN(priv, "Kicking off passive scan.\n");
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;
2937 /* flags + rate selection */
2939 if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
2940 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
2941 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
2942 scan->good_CRC_th = 0;
2943 band = IEEE80211_BAND_2GHZ;
2944 } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
2945 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
2947 * If active scaning is requested but a certain channel
2948 * is marked passive, we can do active scanning if we
2949 * detect transmissions.
2951 scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH : 0;
2952 band = IEEE80211_BAND_5GHZ;
2954 IWL_WARN(priv, "Invalid scan band count\n");
2958 scan->tx_cmd.len = cpu_to_le16(
2959 iwl_fill_probe_req(priv,
2960 (struct ieee80211_mgmt *)scan->data,
2961 priv->scan_request->ie,
2962 priv->scan_request->ie_len,
2963 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
2965 /* select Rx antennas */
2966 scan->flags |= iwl3945_get_antenna_flags(priv);
2968 if (iwl_is_monitor_mode(priv))
2969 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
2971 scan->channel_count =
2972 iwl3945_get_channels_for_scan(priv, band, is_active, n_probes,
2973 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
2975 if (scan->channel_count == 0) {
2976 IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
2980 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
2981 scan->channel_count * sizeof(struct iwl3945_scan_channel);
2983 scan->len = cpu_to_le16(cmd.len);
2985 set_bit(STATUS_SCAN_HW, &priv->status);
2986 rc = iwl_send_cmd_sync(priv, &cmd);
2990 queue_delayed_work(priv->workqueue, &priv->scan_check,
2991 IWL_SCAN_CHECK_WATCHDOG);
2993 mutex_unlock(&priv->mutex);
2997 /* can not perform scan make sure we clear scanning
2998 * bits from status so next scan request can be performed.
2999 * if we dont clear scanning status bit here all next scan
3002 clear_bit(STATUS_SCAN_HW, &priv->status);
3003 clear_bit(STATUS_SCANNING, &priv->status);
3005 /* inform mac80211 scan aborted */
3006 queue_work(priv->workqueue, &priv->scan_completed);
3007 mutex_unlock(&priv->mutex);
3010 static void iwl3945_bg_restart(struct work_struct *data)
3012 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3014 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3017 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
3018 mutex_lock(&priv->mutex);
3021 mutex_unlock(&priv->mutex);
3023 ieee80211_restart_hw(priv->hw);
3027 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3030 mutex_lock(&priv->mutex);
3032 mutex_unlock(&priv->mutex);
3036 static void iwl3945_bg_rx_replenish(struct work_struct *data)
3038 struct iwl_priv *priv =
3039 container_of(data, struct iwl_priv, rx_replenish);
3041 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3044 mutex_lock(&priv->mutex);
3045 iwl3945_rx_replenish(priv);
3046 mutex_unlock(&priv->mutex);
3049 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3051 void iwl3945_post_associate(struct iwl_priv *priv)
3054 struct ieee80211_conf *conf = NULL;
3056 if (priv->iw_mode == NL80211_IFTYPE_AP) {
3057 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
3062 IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3063 priv->assoc_id, priv->active_rxon.bssid_addr);
3065 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3068 if (!priv->vif || !priv->is_open)
3071 iwl_scan_cancel_timeout(priv, 200);
3073 conf = ieee80211_get_hw_conf(priv->hw);
3075 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3076 iwlcore_commit_rxon(priv);
3078 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3079 iwl_setup_rxon_timing(priv);
3080 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3081 sizeof(priv->rxon_timing), &priv->rxon_timing);
3083 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3084 "Attempting to continue.\n");
3086 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3088 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3090 IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3091 priv->assoc_id, priv->beacon_int);
3093 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3094 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3096 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3098 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3099 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3100 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3102 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3104 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3105 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3109 iwlcore_commit_rxon(priv);
3111 switch (priv->iw_mode) {
3112 case NL80211_IFTYPE_STATION:
3113 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
3116 case NL80211_IFTYPE_ADHOC:
3119 iwl_add_station(priv, priv->bssid, 0, CMD_SYNC, NULL);
3120 iwl3945_sync_sta(priv, IWL_STA_ID,
3121 (priv->band == IEEE80211_BAND_5GHZ) ?
3122 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
3124 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
3125 iwl3945_send_beacon_cmd(priv);
3130 IWL_ERR(priv, "%s Should not be called in %d mode\n",
3131 __func__, priv->iw_mode);
3135 iwl_activate_qos(priv, 0);
3137 /* we have just associated, don't start scan too early */
3138 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
3141 /*****************************************************************************
3143 * mac80211 entry point functions
3145 *****************************************************************************/
3147 #define UCODE_READY_TIMEOUT (2 * HZ)
3149 static int iwl3945_mac_start(struct ieee80211_hw *hw)
3151 struct iwl_priv *priv = hw->priv;
3154 IWL_DEBUG_MAC80211(priv, "enter\n");
3156 /* we should be verifying the device is ready to be opened */
3157 mutex_lock(&priv->mutex);
3159 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3160 * ucode filename and max sizes are card-specific. */
3162 if (!priv->ucode_code.len) {
3163 ret = iwl3945_read_ucode(priv);
3165 IWL_ERR(priv, "Could not read microcode: %d\n", ret);
3166 mutex_unlock(&priv->mutex);
3167 goto out_release_irq;
3171 ret = __iwl3945_up(priv);
3173 mutex_unlock(&priv->mutex);
3176 goto out_release_irq;
3178 IWL_DEBUG_INFO(priv, "Start UP work.\n");
3180 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3181 * mac80211 will not be run successfully. */
3182 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3183 test_bit(STATUS_READY, &priv->status),
3184 UCODE_READY_TIMEOUT);
3186 if (!test_bit(STATUS_READY, &priv->status)) {
3188 "Wait for START_ALIVE timeout after %dms.\n",
3189 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3191 goto out_release_irq;
3195 /* ucode is running and will send rfkill notifications,
3196 * no need to poll the killswitch state anymore */
3197 cancel_delayed_work(&priv->_3945.rfkill_poll);
3199 iwl_led_start(priv);
3202 IWL_DEBUG_MAC80211(priv, "leave\n");
3207 IWL_DEBUG_MAC80211(priv, "leave - failed\n");
3211 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
3213 struct iwl_priv *priv = hw->priv;
3215 IWL_DEBUG_MAC80211(priv, "enter\n");
3217 if (!priv->is_open) {
3218 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
3224 if (iwl_is_ready_rf(priv)) {
3225 /* stop mac, cancel any scan request and clear
3226 * RXON_FILTER_ASSOC_MSK BIT
3228 mutex_lock(&priv->mutex);
3229 iwl_scan_cancel_timeout(priv, 100);
3230 mutex_unlock(&priv->mutex);
3235 flush_workqueue(priv->workqueue);
3237 /* start polling the killswitch state again */
3238 queue_delayed_work(priv->workqueue, &priv->_3945.rfkill_poll,
3239 round_jiffies_relative(2 * HZ));
3241 IWL_DEBUG_MAC80211(priv, "leave\n");
3244 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3246 struct iwl_priv *priv = hw->priv;
3248 IWL_DEBUG_MAC80211(priv, "enter\n");
3250 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3251 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3253 if (iwl3945_tx_skb(priv, skb))
3254 dev_kfree_skb_any(skb);
3256 IWL_DEBUG_MAC80211(priv, "leave\n");
3257 return NETDEV_TX_OK;
3260 void iwl3945_config_ap(struct iwl_priv *priv)
3264 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3267 /* The following should be done only at AP bring up */
3268 if (!(iwl_is_associated(priv))) {
3270 /* RXON - unassoc (to set timing command) */
3271 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3272 iwlcore_commit_rxon(priv);
3275 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3276 iwl_setup_rxon_timing(priv);
3277 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3278 sizeof(priv->rxon_timing),
3279 &priv->rxon_timing);
3281 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3282 "Attempting to continue.\n");
3284 /* FIXME: what should be the assoc_id for AP? */
3285 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3286 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3287 priv->staging_rxon.flags |=
3288 RXON_FLG_SHORT_PREAMBLE_MSK;
3290 priv->staging_rxon.flags &=
3291 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3293 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3294 if (priv->assoc_capability &
3295 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3296 priv->staging_rxon.flags |=
3297 RXON_FLG_SHORT_SLOT_MSK;
3299 priv->staging_rxon.flags &=
3300 ~RXON_FLG_SHORT_SLOT_MSK;
3302 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3303 priv->staging_rxon.flags &=
3304 ~RXON_FLG_SHORT_SLOT_MSK;
3306 /* restore RXON assoc */
3307 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3308 iwlcore_commit_rxon(priv);
3309 iwl_add_station(priv, iwl_bcast_addr, 0, CMD_SYNC, NULL);
3311 iwl3945_send_beacon_cmd(priv);
3313 /* FIXME - we need to add code here to detect a totally new
3314 * configuration, reset the AP, unassoc, rxon timing, assoc,
3315 * clear sta table, add BCAST sta... */
3318 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3319 struct ieee80211_vif *vif,
3320 struct ieee80211_sta *sta,
3321 struct ieee80211_key_conf *key)
3323 struct iwl_priv *priv = hw->priv;
3326 u8 sta_id = IWL_INVALID_STATION;
3329 IWL_DEBUG_MAC80211(priv, "enter\n");
3331 if (iwl3945_mod_params.sw_crypto) {
3332 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
3336 addr = sta ? sta->addr : iwl_bcast_addr;
3337 static_key = !iwl_is_associated(priv);
3340 sta_id = iwl_find_station(priv, addr);
3341 if (sta_id == IWL_INVALID_STATION) {
3342 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
3348 mutex_lock(&priv->mutex);
3349 iwl_scan_cancel_timeout(priv, 100);
3350 mutex_unlock(&priv->mutex);
3355 ret = iwl3945_set_static_key(priv, key);
3357 ret = iwl3945_set_dynamic_key(priv, key, sta_id);
3358 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
3362 ret = iwl3945_remove_static_key(priv);
3364 ret = iwl3945_clear_sta_key_info(priv, sta_id);
3365 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
3371 IWL_DEBUG_MAC80211(priv, "leave\n");
3376 /*****************************************************************************
3380 *****************************************************************************/
3382 #ifdef CONFIG_IWLWIFI_DEBUG
3385 * The following adds a new attribute to the sysfs representation
3386 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3387 * used for controlling the debug level.
3389 * See the level definitions in iwl for details.
3391 * The debug_level being managed using sysfs below is a per device debug
3392 * level that is used instead of the global debug level if it (the per
3393 * device debug level) is set.
3395 static ssize_t show_debug_level(struct device *d,
3396 struct device_attribute *attr, char *buf)
3398 struct iwl_priv *priv = dev_get_drvdata(d);
3399 return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
3401 static ssize_t store_debug_level(struct device *d,
3402 struct device_attribute *attr,
3403 const char *buf, size_t count)
3405 struct iwl_priv *priv = dev_get_drvdata(d);
3409 ret = strict_strtoul(buf, 0, &val);
3411 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
3413 priv->debug_level = val;
3414 if (iwl_alloc_traffic_mem(priv))
3416 "Not enough memory to generate traffic log\n");
3418 return strnlen(buf, count);
3421 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3422 show_debug_level, store_debug_level);
3424 #endif /* CONFIG_IWLWIFI_DEBUG */
3426 static ssize_t show_temperature(struct device *d,
3427 struct device_attribute *attr, char *buf)
3429 struct iwl_priv *priv = dev_get_drvdata(d);
3431 if (!iwl_is_alive(priv))
3434 return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
3437 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3439 static ssize_t show_tx_power(struct device *d,
3440 struct device_attribute *attr, char *buf)
3442 struct iwl_priv *priv = dev_get_drvdata(d);
3443 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3446 static ssize_t store_tx_power(struct device *d,
3447 struct device_attribute *attr,
3448 const char *buf, size_t count)
3450 struct iwl_priv *priv = dev_get_drvdata(d);
3451 char *p = (char *)buf;
3454 val = simple_strtoul(p, &p, 10);
3456 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
3458 iwl3945_hw_reg_set_txpower(priv, val);
3463 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3465 static ssize_t show_flags(struct device *d,
3466 struct device_attribute *attr, char *buf)
3468 struct iwl_priv *priv = dev_get_drvdata(d);
3470 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3473 static ssize_t store_flags(struct device *d,
3474 struct device_attribute *attr,
3475 const char *buf, size_t count)
3477 struct iwl_priv *priv = dev_get_drvdata(d);
3478 u32 flags = simple_strtoul(buf, NULL, 0);
3480 mutex_lock(&priv->mutex);
3481 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3482 /* Cancel any currently running scans... */
3483 if (iwl_scan_cancel_timeout(priv, 100))
3484 IWL_WARN(priv, "Could not cancel scan.\n");
3486 IWL_DEBUG_INFO(priv, "Committing rxon.flags = 0x%04X\n",
3488 priv->staging_rxon.flags = cpu_to_le32(flags);
3489 iwlcore_commit_rxon(priv);
3492 mutex_unlock(&priv->mutex);
3497 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3499 static ssize_t show_filter_flags(struct device *d,
3500 struct device_attribute *attr, char *buf)
3502 struct iwl_priv *priv = dev_get_drvdata(d);
3504 return sprintf(buf, "0x%04X\n",
3505 le32_to_cpu(priv->active_rxon.filter_flags));
3508 static ssize_t store_filter_flags(struct device *d,
3509 struct device_attribute *attr,
3510 const char *buf, size_t count)
3512 struct iwl_priv *priv = dev_get_drvdata(d);
3513 u32 filter_flags = simple_strtoul(buf, NULL, 0);
3515 mutex_lock(&priv->mutex);
3516 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3517 /* Cancel any currently running scans... */
3518 if (iwl_scan_cancel_timeout(priv, 100))
3519 IWL_WARN(priv, "Could not cancel scan.\n");
3521 IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
3522 "0x%04X\n", filter_flags);
3523 priv->staging_rxon.filter_flags =
3524 cpu_to_le32(filter_flags);
3525 iwlcore_commit_rxon(priv);
3528 mutex_unlock(&priv->mutex);
3533 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3534 store_filter_flags);
3536 static ssize_t show_measurement(struct device *d,
3537 struct device_attribute *attr, char *buf)
3539 struct iwl_priv *priv = dev_get_drvdata(d);
3540 struct iwl_spectrum_notification measure_report;
3541 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3542 u8 *data = (u8 *)&measure_report;
3543 unsigned long flags;
3545 spin_lock_irqsave(&priv->lock, flags);
3546 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3547 spin_unlock_irqrestore(&priv->lock, flags);
3550 memcpy(&measure_report, &priv->measure_report, size);
3551 priv->measurement_status = 0;
3552 spin_unlock_irqrestore(&priv->lock, flags);
3554 while (size && (PAGE_SIZE - len)) {
3555 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3556 PAGE_SIZE - len, 1);
3558 if (PAGE_SIZE - len)
3562 size -= min(size, 16U);
3568 static ssize_t store_measurement(struct device *d,
3569 struct device_attribute *attr,
3570 const char *buf, size_t count)
3572 struct iwl_priv *priv = dev_get_drvdata(d);
3573 struct ieee80211_measurement_params params = {
3574 .channel = le16_to_cpu(priv->active_rxon.channel),
3575 .start_time = cpu_to_le64(priv->_3945.last_tsf),
3576 .duration = cpu_to_le16(1),
3578 u8 type = IWL_MEASURE_BASIC;
3584 strncpy(buffer, buf, min(sizeof(buffer), count));
3585 channel = simple_strtoul(p, NULL, 0);
3587 params.channel = channel;
3590 while (*p && *p != ' ')
3593 type = simple_strtoul(p + 1, NULL, 0);
3596 IWL_DEBUG_INFO(priv, "Invoking measurement of type %d on "
3597 "channel %d (for '%s')\n", type, params.channel, buf);
3598 iwl3945_get_measurement(priv, ¶ms, type);
3603 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3604 show_measurement, store_measurement);
3606 static ssize_t store_retry_rate(struct device *d,
3607 struct device_attribute *attr,
3608 const char *buf, size_t count)
3610 struct iwl_priv *priv = dev_get_drvdata(d);
3612 priv->retry_rate = simple_strtoul(buf, NULL, 0);
3613 if (priv->retry_rate <= 0)
3614 priv->retry_rate = 1;
3619 static ssize_t show_retry_rate(struct device *d,
3620 struct device_attribute *attr, char *buf)
3622 struct iwl_priv *priv = dev_get_drvdata(d);
3623 return sprintf(buf, "%d", priv->retry_rate);
3626 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3630 static ssize_t show_channels(struct device *d,
3631 struct device_attribute *attr, char *buf)
3633 /* all this shit doesn't belong into sysfs anyway */
3637 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3639 static ssize_t show_statistics(struct device *d,
3640 struct device_attribute *attr, char *buf)
3642 struct iwl_priv *priv = dev_get_drvdata(d);
3643 u32 size = sizeof(struct iwl3945_notif_statistics);
3644 u32 len = 0, ofs = 0;
3645 u8 *data = (u8 *)&priv->_3945.statistics;
3648 if (!iwl_is_alive(priv))
3651 mutex_lock(&priv->mutex);
3652 rc = iwl_send_statistics_request(priv, CMD_SYNC, false);
3653 mutex_unlock(&priv->mutex);
3657 "Error sending statistics request: 0x%08X\n", rc);
3661 while (size && (PAGE_SIZE - len)) {
3662 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3663 PAGE_SIZE - len, 1);
3665 if (PAGE_SIZE - len)
3669 size -= min(size, 16U);
3675 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3677 static ssize_t show_antenna(struct device *d,
3678 struct device_attribute *attr, char *buf)
3680 struct iwl_priv *priv = dev_get_drvdata(d);
3682 if (!iwl_is_alive(priv))
3685 return sprintf(buf, "%d\n", iwl3945_mod_params.antenna);
3688 static ssize_t store_antenna(struct device *d,
3689 struct device_attribute *attr,
3690 const char *buf, size_t count)
3692 struct iwl_priv *priv __maybe_unused = dev_get_drvdata(d);
3698 if (sscanf(buf, "%1i", &ant) != 1) {
3699 IWL_DEBUG_INFO(priv, "not in hex or decimal form.\n");
3703 if ((ant >= 0) && (ant <= 2)) {
3704 IWL_DEBUG_INFO(priv, "Setting antenna select to %d.\n", ant);
3705 iwl3945_mod_params.antenna = (enum iwl3945_antenna)ant;
3707 IWL_DEBUG_INFO(priv, "Bad antenna select value %d.\n", ant);
3713 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
3715 static ssize_t show_status(struct device *d,
3716 struct device_attribute *attr, char *buf)
3718 struct iwl_priv *priv = dev_get_drvdata(d);
3719 if (!iwl_is_alive(priv))
3721 return sprintf(buf, "0x%08x\n", (int)priv->status);
3724 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3726 static ssize_t dump_error_log(struct device *d,
3727 struct device_attribute *attr,
3728 const char *buf, size_t count)
3730 struct iwl_priv *priv = dev_get_drvdata(d);
3731 char *p = (char *)buf;
3734 iwl3945_dump_nic_error_log(priv);
3736 return strnlen(buf, count);
3739 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
3741 /*****************************************************************************
3743 * driver setup and tear down
3745 *****************************************************************************/
3747 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
3749 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3751 init_waitqueue_head(&priv->wait_command_queue);
3753 INIT_WORK(&priv->restart, iwl3945_bg_restart);
3754 INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
3755 INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
3756 INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
3757 INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
3758 INIT_DELAYED_WORK(&priv->_3945.rfkill_poll, iwl3945_rfkill_poll);
3759 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
3760 INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
3761 INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
3762 INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
3764 iwl3945_hw_setup_deferred_work(priv);
3766 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3767 iwl3945_irq_tasklet, (unsigned long)priv);
3770 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
3772 iwl3945_hw_cancel_deferred_work(priv);
3774 cancel_delayed_work_sync(&priv->init_alive_start);
3775 cancel_delayed_work(&priv->scan_check);
3776 cancel_delayed_work(&priv->alive_start);
3777 cancel_work_sync(&priv->beacon_update);
3780 static struct attribute *iwl3945_sysfs_entries[] = {
3781 &dev_attr_antenna.attr,
3782 &dev_attr_channels.attr,
3783 &dev_attr_dump_errors.attr,
3784 &dev_attr_flags.attr,
3785 &dev_attr_filter_flags.attr,
3786 &dev_attr_measurement.attr,
3787 &dev_attr_retry_rate.attr,
3788 &dev_attr_statistics.attr,
3789 &dev_attr_status.attr,
3790 &dev_attr_temperature.attr,
3791 &dev_attr_tx_power.attr,
3792 #ifdef CONFIG_IWLWIFI_DEBUG
3793 &dev_attr_debug_level.attr,
3798 static struct attribute_group iwl3945_attribute_group = {
3799 .name = NULL, /* put in device directory */
3800 .attrs = iwl3945_sysfs_entries,
3803 static struct ieee80211_ops iwl3945_hw_ops = {
3804 .tx = iwl3945_mac_tx,
3805 .start = iwl3945_mac_start,
3806 .stop = iwl3945_mac_stop,
3807 .add_interface = iwl_mac_add_interface,
3808 .remove_interface = iwl_mac_remove_interface,
3809 .config = iwl_mac_config,
3810 .configure_filter = iwl_configure_filter,
3811 .set_key = iwl3945_mac_set_key,
3812 .conf_tx = iwl_mac_conf_tx,
3813 .reset_tsf = iwl_mac_reset_tsf,
3814 .bss_info_changed = iwl_bss_info_changed,
3815 .hw_scan = iwl_mac_hw_scan
3818 static int iwl3945_init_drv(struct iwl_priv *priv)
3821 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
3823 priv->retry_rate = 1;
3824 priv->ibss_beacon = NULL;
3826 spin_lock_init(&priv->sta_lock);
3827 spin_lock_init(&priv->hcmd_lock);
3829 INIT_LIST_HEAD(&priv->free_frames);
3831 mutex_init(&priv->mutex);
3832 mutex_init(&priv->sync_cmd_mutex);
3834 /* Clear the driver's (not device's) station table */
3835 iwl_clear_stations_table(priv);
3837 priv->ieee_channels = NULL;
3838 priv->ieee_rates = NULL;
3839 priv->band = IEEE80211_BAND_2GHZ;
3841 priv->iw_mode = NL80211_IFTYPE_STATION;
3842 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
3844 iwl_reset_qos(priv);
3846 priv->qos_data.qos_active = 0;
3847 priv->qos_data.qos_cap.val = 0;
3849 priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER;
3851 if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
3852 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
3857 ret = iwl_init_channel_map(priv);
3859 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3863 /* Set up txpower settings in driver for all channels */
3864 if (iwl3945_txpower_set_from_eeprom(priv)) {
3866 goto err_free_channel_map;
3869 ret = iwlcore_init_geos(priv);
3871 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3872 goto err_free_channel_map;
3874 iwl3945_init_hw_rates(priv, priv->ieee_rates);
3878 err_free_channel_map:
3879 iwl_free_channel_map(priv);
3884 static int iwl3945_setup_mac(struct iwl_priv *priv)
3887 struct ieee80211_hw *hw = priv->hw;
3889 hw->rate_control_algorithm = "iwl-3945-rs";
3890 hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
3892 /* Tell mac80211 our characteristics */
3893 hw->flags = IEEE80211_HW_SIGNAL_DBM |
3894 IEEE80211_HW_NOISE_DBM |
3895 IEEE80211_HW_SPECTRUM_MGMT;
3897 if (!priv->cfg->broken_powersave)
3898 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
3899 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
3901 hw->wiphy->interface_modes =
3902 BIT(NL80211_IFTYPE_STATION) |
3903 BIT(NL80211_IFTYPE_ADHOC);
3905 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY |
3906 WIPHY_FLAG_DISABLE_BEACON_HINTS;
3908 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX_3945;
3909 /* we create the 802.11 header and a zero-length SSID element */
3910 hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
3912 /* Default value; 4 EDCA QOS priorities */
3915 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
3916 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3917 &priv->bands[IEEE80211_BAND_2GHZ];
3919 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
3920 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
3921 &priv->bands[IEEE80211_BAND_5GHZ];
3923 ret = ieee80211_register_hw(priv->hw);
3925 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
3928 priv->mac80211_registered = 1;
3933 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3936 struct iwl_priv *priv;
3937 struct ieee80211_hw *hw;
3938 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3939 struct iwl3945_eeprom *eeprom;
3940 unsigned long flags;
3942 /***********************
3943 * 1. Allocating HW data
3944 * ********************/
3946 /* mac80211 allocates memory for this device instance, including
3947 * space for this driver's private structure */
3948 hw = iwl_alloc_all(cfg, &iwl3945_hw_ops);
3950 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
3955 SET_IEEE80211_DEV(hw, &pdev->dev);
3958 * Disabling hardware scan means that mac80211 will perform scans
3959 * "the hard way", rather than using device's scan.
3961 if (iwl3945_mod_params.disable_hw_scan) {
3962 IWL_DEBUG_INFO(priv, "Disabling hw_scan\n");
3963 iwl3945_hw_ops.hw_scan = NULL;
3967 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3969 priv->pci_dev = pdev;
3970 priv->inta_mask = CSR_INI_SET_MASK;
3972 #ifdef CONFIG_IWLWIFI_DEBUG
3973 atomic_set(&priv->restrict_refcnt, 0);
3975 if (iwl_alloc_traffic_mem(priv))
3976 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3978 /***************************
3979 * 2. Initializing PCI bus
3980 * *************************/
3981 if (pci_enable_device(pdev)) {
3983 goto out_ieee80211_free_hw;
3986 pci_set_master(pdev);
3988 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3990 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3992 IWL_WARN(priv, "No suitable DMA available.\n");
3993 goto out_pci_disable_device;
3996 pci_set_drvdata(pdev, priv);
3997 err = pci_request_regions(pdev, DRV_NAME);
3999 goto out_pci_disable_device;
4001 /***********************
4002 * 3. Read REV Register
4003 * ********************/
4004 priv->hw_base = pci_iomap(pdev, 0, 0);
4005 if (!priv->hw_base) {
4007 goto out_pci_release_regions;
4010 IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
4011 (unsigned long long) pci_resource_len(pdev, 0));
4012 IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
4014 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4015 * PCI Tx retries from interfering with C3 CPU state */
4016 pci_write_config_byte(pdev, 0x41, 0x00);
4018 /* these spin locks will be used in apm_ops.init and EEPROM access
4019 * we should init now
4021 spin_lock_init(&priv->reg_lock);
4022 spin_lock_init(&priv->lock);
4025 * stop and reset the on-board processor just in case it is in a
4026 * strange state ... like being left stranded by a primary kernel
4027 * and this is now the kdump kernel trying to start up
4029 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
4031 /***********************
4033 * ********************/
4035 /* Read the EEPROM */
4036 err = iwl_eeprom_init(priv);
4038 IWL_ERR(priv, "Unable to init EEPROM\n");
4041 /* MAC Address location in EEPROM same for 3945/4965 */
4042 eeprom = (struct iwl3945_eeprom *)priv->eeprom;
4043 memcpy(priv->mac_addr, eeprom->mac_address, ETH_ALEN);
4044 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
4045 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4047 /***********************
4048 * 5. Setup HW Constants
4049 * ********************/
4050 /* Device-specific setup */
4051 if (iwl3945_hw_set_hw_params(priv)) {
4052 IWL_ERR(priv, "failed to set hw settings\n");
4053 goto out_eeprom_free;
4056 /***********************
4058 * ********************/
4060 err = iwl3945_init_drv(priv);
4062 IWL_ERR(priv, "initializing driver failed\n");
4063 goto out_unset_hw_params;
4066 IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
4069 /***********************
4071 * ********************/
4073 spin_lock_irqsave(&priv->lock, flags);
4074 iwl_disable_interrupts(priv);
4075 spin_unlock_irqrestore(&priv->lock, flags);
4077 pci_enable_msi(priv->pci_dev);
4079 err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr,
4080 IRQF_SHARED, DRV_NAME, priv);
4082 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
4083 goto out_disable_msi;
4086 err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4088 IWL_ERR(priv, "failed to create sysfs device attributes\n");
4089 goto out_release_irq;
4092 iwl_set_rxon_channel(priv,
4093 &priv->bands[IEEE80211_BAND_2GHZ].channels[5]);
4094 iwl3945_setup_deferred_work(priv);
4095 iwl3945_setup_rx_handlers(priv);
4096 iwl_power_initialize(priv);
4098 /*********************************
4099 * 8. Setup and Register mac80211
4100 * *******************************/
4102 iwl_enable_interrupts(priv);
4104 err = iwl3945_setup_mac(priv);
4106 goto out_remove_sysfs;
4108 err = iwl_dbgfs_register(priv, DRV_NAME);
4110 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
4112 /* Start monitoring the killswitch */
4113 queue_delayed_work(priv->workqueue, &priv->_3945.rfkill_poll,
4119 destroy_workqueue(priv->workqueue);
4120 priv->workqueue = NULL;
4121 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4123 free_irq(priv->pci_dev->irq, priv);
4125 pci_disable_msi(priv->pci_dev);
4126 iwlcore_free_geos(priv);
4127 iwl_free_channel_map(priv);
4128 out_unset_hw_params:
4129 iwl3945_unset_hw_params(priv);
4131 iwl_eeprom_free(priv);
4133 pci_iounmap(pdev, priv->hw_base);
4134 out_pci_release_regions:
4135 pci_release_regions(pdev);
4136 out_pci_disable_device:
4137 pci_set_drvdata(pdev, NULL);
4138 pci_disable_device(pdev);
4139 out_ieee80211_free_hw:
4140 iwl_free_traffic_mem(priv);
4141 ieee80211_free_hw(priv->hw);
4146 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
4148 struct iwl_priv *priv = pci_get_drvdata(pdev);
4149 unsigned long flags;
4154 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
4156 iwl_dbgfs_unregister(priv);
4158 set_bit(STATUS_EXIT_PENDING, &priv->status);
4160 if (priv->mac80211_registered) {
4161 ieee80211_unregister_hw(priv->hw);
4162 priv->mac80211_registered = 0;
4168 * Make sure device is reset to low power before unloading driver.
4169 * This may be redundant with iwl_down(), but there are paths to
4170 * run iwl_down() without calling apm_ops.stop(), and there are
4171 * paths to avoid running iwl_down() at all before leaving driver.
4172 * This (inexpensive) call *makes sure* device is reset.
4174 priv->cfg->ops->lib->apm_ops.stop(priv);
4176 /* make sure we flush any pending irq or
4177 * tasklet for the driver
4179 spin_lock_irqsave(&priv->lock, flags);
4180 iwl_disable_interrupts(priv);
4181 spin_unlock_irqrestore(&priv->lock, flags);
4183 iwl_synchronize_irq(priv);
4185 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4187 cancel_delayed_work_sync(&priv->_3945.rfkill_poll);
4189 iwl3945_dealloc_ucode_pci(priv);
4192 iwl3945_rx_queue_free(priv, &priv->rxq);
4193 iwl3945_hw_txq_ctx_free(priv);
4195 iwl3945_unset_hw_params(priv);
4196 iwl_clear_stations_table(priv);
4198 /*netif_stop_queue(dev); */
4199 flush_workqueue(priv->workqueue);
4201 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4202 * priv->workqueue... so we can't take down the workqueue
4204 destroy_workqueue(priv->workqueue);
4205 priv->workqueue = NULL;
4206 iwl_free_traffic_mem(priv);
4208 free_irq(pdev->irq, priv);
4209 pci_disable_msi(pdev);
4211 pci_iounmap(pdev, priv->hw_base);
4212 pci_release_regions(pdev);
4213 pci_disable_device(pdev);
4214 pci_set_drvdata(pdev, NULL);
4216 iwl_free_channel_map(priv);
4217 iwlcore_free_geos(priv);
4219 if (priv->ibss_beacon)
4220 dev_kfree_skb(priv->ibss_beacon);
4222 ieee80211_free_hw(priv->hw);
4226 /*****************************************************************************
4228 * driver and module entry point
4230 *****************************************************************************/
4232 static struct pci_driver iwl3945_driver = {
4234 .id_table = iwl3945_hw_card_ids,
4235 .probe = iwl3945_pci_probe,
4236 .remove = __devexit_p(iwl3945_pci_remove),
4238 .suspend = iwl_pci_suspend,
4239 .resume = iwl_pci_resume,
4243 static int __init iwl3945_init(void)
4247 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4248 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4250 ret = iwl3945_rate_control_register();
4252 printk(KERN_ERR DRV_NAME
4253 "Unable to register rate control algorithm: %d\n", ret);
4257 ret = pci_register_driver(&iwl3945_driver);
4259 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
4260 goto error_register;
4266 iwl3945_rate_control_unregister();
4270 static void __exit iwl3945_exit(void)
4272 pci_unregister_driver(&iwl3945_driver);
4273 iwl3945_rate_control_unregister();
4276 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
4278 module_param_named(antenna, iwl3945_mod_params.antenna, int, S_IRUGO);
4279 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
4280 module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, S_IRUGO);
4281 MODULE_PARM_DESC(swcrypto,
4282 "using software crypto (default 1 [software])\n");
4283 #ifdef CONFIG_IWLWIFI_DEBUG
4284 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
4285 MODULE_PARM_DESC(debug, "debug output mask");
4287 module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan,
4289 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
4290 module_param_named(fw_restart3945, iwl3945_mod_params.restart_fw, int, S_IRUGO);
4291 MODULE_PARM_DESC(fw_restart3945, "restart firmware in case of error");
4293 module_exit(iwl3945_exit);
4294 module_init(iwl3945_init);