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"
56 #include "iwl-helpers.h"
61 * module name, copyright, version, etc.
64 #define DRV_DESCRIPTION \
65 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
67 #ifdef CONFIG_IWLWIFI_DEBUG
73 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
79 #define DRV_VERSION IWLWIFI_VERSION VD VS
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->shared_virt)
355 pci_free_consistent(priv->pci_dev,
356 sizeof(struct iwl3945_shared),
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;
483 spin_lock_irqsave(&priv->lock, flags);
484 if (iwl_is_rfkill(priv)) {
485 IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n");
489 if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
490 IWL_ERR(priv, "ERROR: No TX rate available.\n");
494 unicast = !is_multicast_ether_addr(hdr->addr1);
497 fc = hdr->frame_control;
499 #ifdef CONFIG_IWLWIFI_DEBUG
500 if (ieee80211_is_auth(fc))
501 IWL_DEBUG_TX(priv, "Sending AUTH frame\n");
502 else if (ieee80211_is_assoc_req(fc))
503 IWL_DEBUG_TX(priv, "Sending ASSOC frame\n");
504 else if (ieee80211_is_reassoc_req(fc))
505 IWL_DEBUG_TX(priv, "Sending REASSOC frame\n");
508 /* drop all non-injected data frame if we are not associated */
509 if (ieee80211_is_data(fc) &&
510 !(info->flags & IEEE80211_TX_CTL_INJECTED) &&
511 (!iwl_is_associated(priv) ||
512 ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
513 IWL_DEBUG_DROP(priv, "Dropping - !iwl_is_associated\n");
517 spin_unlock_irqrestore(&priv->lock, flags);
519 hdr_len = ieee80211_hdrlen(fc);
521 /* Find (or create) index into station table for destination station */
522 if (info->flags & IEEE80211_TX_CTL_INJECTED)
523 sta_id = priv->hw_params.bcast_sta_id;
525 sta_id = iwl_get_sta_id(priv, hdr);
526 if (sta_id == IWL_INVALID_STATION) {
527 IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n",
532 IWL_DEBUG_RATE(priv, "station Id %d\n", sta_id);
534 if (ieee80211_is_data_qos(fc)) {
535 qc = ieee80211_get_qos_ctl(hdr);
536 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
537 if (unlikely(tid >= MAX_TID_COUNT))
539 seq_number = priv->stations[sta_id].tid[tid].seq_number &
541 hdr->seq_ctrl = cpu_to_le16(seq_number) |
543 cpu_to_le16(IEEE80211_SCTL_FRAG));
547 /* Descriptor for chosen Tx queue */
548 txq = &priv->txq[txq_id];
551 if ((iwl_queue_space(q) < q->high_mark))
554 spin_lock_irqsave(&priv->lock, flags);
556 idx = get_cmd_index(q, q->write_ptr, 0);
558 /* Set up driver data for this TFD */
559 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
560 txq->txb[q->write_ptr].skb[0] = skb;
562 /* Init first empty entry in queue's array of Tx/cmd buffers */
563 out_cmd = txq->cmd[idx];
564 out_meta = &txq->meta[idx];
565 tx_cmd = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload;
566 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
567 memset(tx_cmd, 0, sizeof(*tx_cmd));
570 * Set up the Tx-command (not MAC!) header.
571 * Store the chosen Tx queue and TFD index within the sequence field;
572 * after Tx, uCode's Tx response will return this value so driver can
573 * locate the frame within the tx queue and do post-tx processing.
575 out_cmd->hdr.cmd = REPLY_TX;
576 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
577 INDEX_TO_SEQ(q->write_ptr)));
579 /* Copy MAC header from skb into command buffer */
580 memcpy(tx_cmd->hdr, hdr, hdr_len);
583 if (info->control.hw_key)
584 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, sta_id);
586 /* TODO need this for burst mode later on */
587 iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id);
589 /* set is_hcca to 0; it probably will never be implemented */
590 iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
592 /* Total # bytes to be transmitted */
594 tx_cmd->len = cpu_to_le16(len);
596 iwl_dbg_log_tx_data_frame(priv, len, hdr);
597 iwl_update_stats(priv, true, fc, len);
598 tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
599 tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
601 if (!ieee80211_has_morefrags(hdr->frame_control)) {
602 txq->need_update = 1;
604 priv->stations[sta_id].tid[tid].seq_number = seq_number;
607 txq->need_update = 0;
610 IWL_DEBUG_TX(priv, "sequence nr = 0X%x \n",
611 le16_to_cpu(out_cmd->hdr.sequence));
612 IWL_DEBUG_TX(priv, "tx_flags = 0X%x \n", le32_to_cpu(tx_cmd->tx_flags));
613 iwl_print_hex_dump(priv, IWL_DL_TX, tx_cmd, sizeof(*tx_cmd));
614 iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx_cmd->hdr,
615 ieee80211_hdrlen(fc));
618 * Use the first empty entry in this queue's command buffer array
619 * to contain the Tx command and MAC header concatenated together
620 * (payload data will be in another buffer).
621 * Size of this varies, due to varying MAC header length.
622 * If end is not dword aligned, we'll have 2 extra bytes at the end
623 * of the MAC header (device reads on dword boundaries).
624 * We'll tell device about this padding later.
626 len = sizeof(struct iwl3945_tx_cmd) +
627 sizeof(struct iwl_cmd_header) + hdr_len;
630 len = (len + 3) & ~3;
637 /* Physical address of this Tx command's header (not MAC header!),
638 * within command buffer array. */
639 txcmd_phys = pci_map_single(priv->pci_dev, &out_cmd->hdr,
640 len, PCI_DMA_TODEVICE);
641 /* we do not map meta data ... so we can safely access address to
642 * provide to unmap command*/
643 pci_unmap_addr_set(out_meta, mapping, txcmd_phys);
644 pci_unmap_len_set(out_meta, len, len);
646 /* Add buffer containing Tx command and MAC(!) header to TFD's
648 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
649 txcmd_phys, len, 1, 0);
652 /* Set up TFD's 2nd entry to point directly to remainder of skb,
653 * if any (802.11 null frames have no payload). */
654 len = skb->len - hdr_len;
656 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
657 len, PCI_DMA_TODEVICE);
658 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
664 /* Tell device the write index *just past* this latest filled TFD */
665 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
666 rc = iwl_txq_update_write_ptr(priv, txq);
667 spin_unlock_irqrestore(&priv->lock, flags);
672 if ((iwl_queue_space(q) < q->high_mark)
673 && priv->mac80211_registered) {
674 if (wait_write_ptr) {
675 spin_lock_irqsave(&priv->lock, flags);
676 txq->need_update = 1;
677 iwl_txq_update_write_ptr(priv, txq);
678 spin_unlock_irqrestore(&priv->lock, flags);
681 iwl_stop_queue(priv, skb_get_queue_mapping(skb));
687 spin_unlock_irqrestore(&priv->lock, flags);
692 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
694 #include "iwl-spectrum.h"
696 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
697 #define BEACON_TIME_MASK_HIGH 0xFF000000
698 #define TIME_UNIT 1024
701 * extended beacon time format
702 * time in usec will be changed into a 32-bit value in 8:24 format
703 * the high 1 byte is the beacon counts
704 * the lower 3 bytes is the time in usec within one beacon interval
707 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
711 u32 interval = beacon_interval * 1024;
713 if (!interval || !usec)
716 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
717 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
719 return (quot << 24) + rem;
722 /* base is usually what we get from ucode with each received frame,
723 * the same as HW timer counter counting down
726 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
728 u32 base_low = base & BEACON_TIME_MASK_LOW;
729 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
730 u32 interval = beacon_interval * TIME_UNIT;
731 u32 res = (base & BEACON_TIME_MASK_HIGH) +
732 (addon & BEACON_TIME_MASK_HIGH);
734 if (base_low > addon_low)
735 res += base_low - addon_low;
736 else if (base_low < addon_low) {
737 res += interval + base_low - addon_low;
742 return cpu_to_le32(res);
745 static int iwl3945_get_measurement(struct iwl_priv *priv,
746 struct ieee80211_measurement_params *params,
749 struct iwl_spectrum_cmd spectrum;
750 struct iwl_rx_packet *pkt;
751 struct iwl_host_cmd cmd = {
752 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
753 .data = (void *)&spectrum,
754 .flags = CMD_WANT_SKB,
756 u32 add_time = le64_to_cpu(params->start_time);
758 int spectrum_resp_status;
759 int duration = le16_to_cpu(params->duration);
761 if (iwl_is_associated(priv))
763 iwl3945_usecs_to_beacons(
764 le64_to_cpu(params->start_time) - priv->last_tsf,
765 le16_to_cpu(priv->rxon_timing.beacon_interval));
767 memset(&spectrum, 0, sizeof(spectrum));
769 spectrum.channel_count = cpu_to_le16(1);
771 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
772 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
773 cmd.len = sizeof(spectrum);
774 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
776 if (iwl_is_associated(priv))
777 spectrum.start_time =
778 iwl3945_add_beacon_time(priv->last_beacon_time,
780 le16_to_cpu(priv->rxon_timing.beacon_interval));
782 spectrum.start_time = 0;
784 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
785 spectrum.channels[0].channel = params->channel;
786 spectrum.channels[0].type = type;
787 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
788 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
789 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
791 rc = iwl_send_cmd_sync(priv, &cmd);
795 pkt = (struct iwl_rx_packet *)cmd.reply_page;
796 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
797 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
801 spectrum_resp_status = le16_to_cpu(pkt->u.spectrum.status);
802 switch (spectrum_resp_status) {
803 case 0: /* Command will be handled */
804 if (pkt->u.spectrum.id != 0xff) {
805 IWL_DEBUG_INFO(priv, "Replaced existing measurement: %d\n",
807 priv->measurement_status &= ~MEASUREMENT_READY;
809 priv->measurement_status |= MEASUREMENT_ACTIVE;
813 case 1: /* Command will not be handled */
818 iwl_free_pages(priv, cmd.reply_page);
824 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
825 struct iwl_rx_mem_buffer *rxb)
827 struct iwl_rx_packet *pkt = rxb_addr(rxb);
828 struct iwl_alive_resp *palive;
829 struct delayed_work *pwork;
831 palive = &pkt->u.alive_frame;
833 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
835 palive->is_valid, palive->ver_type,
836 palive->ver_subtype);
838 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
839 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
840 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
841 sizeof(struct iwl_alive_resp));
842 pwork = &priv->init_alive_start;
844 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
845 memcpy(&priv->card_alive, &pkt->u.alive_frame,
846 sizeof(struct iwl_alive_resp));
847 pwork = &priv->alive_start;
848 iwl3945_disable_events(priv);
851 /* We delay the ALIVE response by 5ms to
852 * give the HW RF Kill time to activate... */
853 if (palive->is_valid == UCODE_VALID_OK)
854 queue_delayed_work(priv->workqueue, pwork,
855 msecs_to_jiffies(5));
857 IWL_WARN(priv, "uCode did not respond OK.\n");
860 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
861 struct iwl_rx_mem_buffer *rxb)
863 #ifdef CONFIG_IWLWIFI_DEBUG
864 struct iwl_rx_packet *pkt = rxb_addr(rxb);
867 IWL_DEBUG_RX(priv, "Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
871 static void iwl3945_bg_beacon_update(struct work_struct *work)
873 struct iwl_priv *priv =
874 container_of(work, struct iwl_priv, beacon_update);
875 struct sk_buff *beacon;
877 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
878 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
881 IWL_ERR(priv, "update beacon failed\n");
885 mutex_lock(&priv->mutex);
886 /* new beacon skb is allocated every time; dispose previous.*/
887 if (priv->ibss_beacon)
888 dev_kfree_skb(priv->ibss_beacon);
890 priv->ibss_beacon = beacon;
891 mutex_unlock(&priv->mutex);
893 iwl3945_send_beacon_cmd(priv);
896 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
897 struct iwl_rx_mem_buffer *rxb)
899 #ifdef CONFIG_IWLWIFI_DEBUG
900 struct iwl_rx_packet *pkt = rxb_addr(rxb);
901 struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
902 u8 rate = beacon->beacon_notify_hdr.rate;
904 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
905 "tsf %d %d rate %d\n",
906 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
907 beacon->beacon_notify_hdr.failure_frame,
908 le32_to_cpu(beacon->ibss_mgr_status),
909 le32_to_cpu(beacon->high_tsf),
910 le32_to_cpu(beacon->low_tsf), rate);
913 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
914 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
915 queue_work(priv->workqueue, &priv->beacon_update);
918 /* Handle notification from uCode that card's power state is changing
919 * due to software, hardware, or critical temperature RFKILL */
920 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
921 struct iwl_rx_mem_buffer *rxb)
923 struct iwl_rx_packet *pkt = rxb_addr(rxb);
924 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
925 unsigned long status = priv->status;
927 IWL_WARN(priv, "Card state received: HW:%s SW:%s\n",
928 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
929 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
931 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
932 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
934 if (flags & HW_CARD_DISABLED)
935 set_bit(STATUS_RF_KILL_HW, &priv->status);
937 clear_bit(STATUS_RF_KILL_HW, &priv->status);
940 iwl_scan_cancel(priv);
942 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
943 test_bit(STATUS_RF_KILL_HW, &priv->status)))
944 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
945 test_bit(STATUS_RF_KILL_HW, &priv->status));
947 wake_up_interruptible(&priv->wait_command_queue);
951 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
953 * Setup the RX handlers for each of the reply types sent from the uCode
956 * This function chains into the hardware specific files for them to setup
957 * any hardware specific handlers as well.
959 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
961 priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
962 priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
963 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
964 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
965 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
966 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
967 iwl_rx_pm_debug_statistics_notif;
968 priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
971 * The same handler is used for both the REPLY to a discrete
972 * statistics request from the host as well as for the periodic
973 * statistics notifications (after received beacons) from the uCode.
975 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
976 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
978 iwl_setup_spectrum_handlers(priv);
979 iwl_setup_rx_scan_handlers(priv);
980 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
982 /* Set up hardware specific Rx handlers */
983 iwl3945_hw_rx_handler_setup(priv);
986 /************************** RX-FUNCTIONS ****************************/
988 * Rx theory of operation
990 * The host allocates 32 DMA target addresses and passes the host address
991 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
995 * The host/firmware share two index registers for managing the Rx buffers.
997 * The READ index maps to the first position that the firmware may be writing
998 * to -- the driver can read up to (but not including) this position and get
1000 * The READ index is managed by the firmware once the card is enabled.
1002 * The WRITE index maps to the last position the driver has read from -- the
1003 * position preceding WRITE is the last slot the firmware can place a packet.
1005 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
1008 * During initialization, the host sets up the READ queue position to the first
1009 * INDEX position, and WRITE to the last (READ - 1 wrapped)
1011 * When the firmware places a packet in a buffer, it will advance the READ index
1012 * and fire the RX interrupt. The driver can then query the READ index and
1013 * process as many packets as possible, moving the WRITE index forward as it
1014 * resets the Rx queue buffers with new memory.
1016 * The management in the driver is as follows:
1017 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
1018 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
1019 * to replenish the iwl->rxq->rx_free.
1020 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
1021 * iwl->rxq is replenished and the READ INDEX is updated (updating the
1022 * 'processed' and 'read' driver indexes as well)
1023 * + A received packet is processed and handed to the kernel network stack,
1024 * detached from the iwl->rxq. The driver 'processed' index is updated.
1025 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
1026 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
1027 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
1028 * were enough free buffers and RX_STALLED is set it is cleared.
1033 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
1034 * iwl3945_rx_queue_restock
1035 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
1036 * queue, updates firmware pointers, and updates
1037 * the WRITE index. If insufficient rx_free buffers
1038 * are available, schedules iwl3945_rx_replenish
1040 * -- enable interrupts --
1041 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
1042 * READ INDEX, detaching the SKB from the pool.
1043 * Moves the packet buffer from queue to rx_used.
1044 * Calls iwl3945_rx_queue_restock to refill any empty
1051 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
1053 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
1054 dma_addr_t dma_addr)
1056 return cpu_to_le32((u32)dma_addr);
1060 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
1062 * If there are slots in the RX queue that need to be restocked,
1063 * and we have free pre-allocated buffers, fill the ranks as much
1064 * as we can, pulling from rx_free.
1066 * This moves the 'write' index forward to catch up with 'processed', and
1067 * also updates the memory address in the firmware to reference the new
1070 static int iwl3945_rx_queue_restock(struct iwl_priv *priv)
1072 struct iwl_rx_queue *rxq = &priv->rxq;
1073 struct list_head *element;
1074 struct iwl_rx_mem_buffer *rxb;
1075 unsigned long flags;
1078 spin_lock_irqsave(&rxq->lock, flags);
1079 write = rxq->write & ~0x7;
1080 while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
1081 /* Get next free Rx buffer, remove from free list */
1082 element = rxq->rx_free.next;
1083 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1086 /* Point to Rx buffer via next RBD in circular buffer */
1087 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->page_dma);
1088 rxq->queue[rxq->write] = rxb;
1089 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
1092 spin_unlock_irqrestore(&rxq->lock, flags);
1093 /* If the pre-allocated buffer pool is dropping low, schedule to
1095 if (rxq->free_count <= RX_LOW_WATERMARK)
1096 queue_work(priv->workqueue, &priv->rx_replenish);
1099 /* If we've added more space for the firmware to place data, tell it.
1100 * Increment device's write pointer in multiples of 8. */
1101 if ((rxq->write_actual != (rxq->write & ~0x7))
1102 || (abs(rxq->write - rxq->read) > 7)) {
1103 spin_lock_irqsave(&rxq->lock, flags);
1104 rxq->need_update = 1;
1105 spin_unlock_irqrestore(&rxq->lock, flags);
1106 rc = iwl_rx_queue_update_write_ptr(priv, rxq);
1115 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1117 * When moving to rx_free an SKB is allocated for the slot.
1119 * Also restock the Rx queue via iwl3945_rx_queue_restock.
1120 * This is called as a scheduled work item (except for during initialization)
1122 static void iwl3945_rx_allocate(struct iwl_priv *priv, gfp_t priority)
1124 struct iwl_rx_queue *rxq = &priv->rxq;
1125 struct list_head *element;
1126 struct iwl_rx_mem_buffer *rxb;
1128 unsigned long flags;
1129 gfp_t gfp_mask = priority;
1132 spin_lock_irqsave(&rxq->lock, flags);
1134 if (list_empty(&rxq->rx_used)) {
1135 spin_unlock_irqrestore(&rxq->lock, flags);
1138 spin_unlock_irqrestore(&rxq->lock, flags);
1140 if (rxq->free_count > RX_LOW_WATERMARK)
1141 gfp_mask |= __GFP_NOWARN;
1143 if (priv->hw_params.rx_page_order > 0)
1144 gfp_mask |= __GFP_COMP;
1146 /* Alloc a new receive buffer */
1147 page = alloc_pages(gfp_mask, priv->hw_params.rx_page_order);
1149 if (net_ratelimit())
1150 IWL_DEBUG_INFO(priv, "Failed to allocate SKB buffer.\n");
1151 if ((rxq->free_count <= RX_LOW_WATERMARK) &&
1153 IWL_CRIT(priv, "Failed to allocate SKB buffer with %s. Only %u free buffers remaining.\n",
1154 priority == GFP_ATOMIC ? "GFP_ATOMIC" : "GFP_KERNEL",
1156 /* We don't reschedule replenish work here -- we will
1157 * call the restock method and if it still needs
1158 * more buffers it will schedule replenish */
1162 spin_lock_irqsave(&rxq->lock, flags);
1163 if (list_empty(&rxq->rx_used)) {
1164 spin_unlock_irqrestore(&rxq->lock, flags);
1165 __free_pages(page, priv->hw_params.rx_page_order);
1168 element = rxq->rx_used.next;
1169 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1171 spin_unlock_irqrestore(&rxq->lock, flags);
1174 /* Get physical address of RB/SKB */
1175 rxb->page_dma = pci_map_page(priv->pci_dev, page, 0,
1176 PAGE_SIZE << priv->hw_params.rx_page_order,
1177 PCI_DMA_FROMDEVICE);
1179 spin_lock_irqsave(&rxq->lock, flags);
1181 list_add_tail(&rxb->list, &rxq->rx_free);
1183 priv->alloc_rxb_page++;
1185 spin_unlock_irqrestore(&rxq->lock, flags);
1189 void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1191 unsigned long flags;
1193 spin_lock_irqsave(&rxq->lock, flags);
1194 INIT_LIST_HEAD(&rxq->rx_free);
1195 INIT_LIST_HEAD(&rxq->rx_used);
1196 /* Fill the rx_used queue with _all_ of the Rx buffers */
1197 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
1198 /* In the reset function, these buffers may have been allocated
1199 * to an SKB, so we need to unmap and free potential storage */
1200 if (rxq->pool[i].page != NULL) {
1201 pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
1202 PAGE_SIZE << priv->hw_params.rx_page_order,
1203 PCI_DMA_FROMDEVICE);
1204 __iwl_free_pages(priv, rxq->pool[i].page);
1205 rxq->pool[i].page = NULL;
1207 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
1210 /* Set us so that we have processed and used all buffers, but have
1211 * not restocked the Rx queue with fresh buffers */
1212 rxq->read = rxq->write = 0;
1213 rxq->write_actual = 0;
1214 rxq->free_count = 0;
1215 spin_unlock_irqrestore(&rxq->lock, flags);
1218 void iwl3945_rx_replenish(void *data)
1220 struct iwl_priv *priv = data;
1221 unsigned long flags;
1223 iwl3945_rx_allocate(priv, GFP_KERNEL);
1225 spin_lock_irqsave(&priv->lock, flags);
1226 iwl3945_rx_queue_restock(priv);
1227 spin_unlock_irqrestore(&priv->lock, flags);
1230 static void iwl3945_rx_replenish_now(struct iwl_priv *priv)
1232 iwl3945_rx_allocate(priv, GFP_ATOMIC);
1234 iwl3945_rx_queue_restock(priv);
1238 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1239 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1240 * This free routine walks the list of POOL entries and if SKB is set to
1241 * non NULL it is unmapped and freed
1243 static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1246 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
1247 if (rxq->pool[i].page != NULL) {
1248 pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
1249 PAGE_SIZE << priv->hw_params.rx_page_order,
1250 PCI_DMA_FROMDEVICE);
1251 __iwl_free_pages(priv, rxq->pool[i].page);
1252 rxq->pool[i].page = NULL;
1256 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
1258 pci_free_consistent(priv->pci_dev, sizeof(struct iwl_rb_status),
1259 rxq->rb_stts, rxq->rb_stts_dma);
1261 rxq->rb_stts = NULL;
1265 /* Convert linear signal-to-noise ratio into dB */
1266 static u8 ratio2dB[100] = {
1267 /* 0 1 2 3 4 5 6 7 8 9 */
1268 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1269 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1270 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1271 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1272 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1273 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1274 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1275 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1276 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1277 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1280 /* Calculates a relative dB value from a ratio of linear
1281 * (i.e. not dB) signal levels.
1282 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1283 int iwl3945_calc_db_from_ratio(int sig_ratio)
1285 /* 1000:1 or higher just report as 60 dB */
1286 if (sig_ratio >= 1000)
1289 /* 100:1 or higher, divide by 10 and use table,
1290 * add 20 dB to make up for divide by 10 */
1291 if (sig_ratio >= 100)
1292 return 20 + (int)ratio2dB[sig_ratio/10];
1294 /* We shouldn't see this */
1298 /* Use table for ratios 1:1 - 99:1 */
1299 return (int)ratio2dB[sig_ratio];
1303 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1305 * Uses the priv->rx_handlers callback function array to invoke
1306 * the appropriate handlers, including command responses,
1307 * frame-received notifications, and other notifications.
1309 static void iwl3945_rx_handle(struct iwl_priv *priv)
1311 struct iwl_rx_mem_buffer *rxb;
1312 struct iwl_rx_packet *pkt;
1313 struct iwl_rx_queue *rxq = &priv->rxq;
1316 unsigned long flags;
1319 int total_empty = 0;
1321 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1322 * buffer that the driver may process (last buffer filled by ucode). */
1323 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
1326 /* calculate total frames need to be restock after handling RX */
1327 total_empty = r - rxq->write_actual;
1328 if (total_empty < 0)
1329 total_empty += RX_QUEUE_SIZE;
1331 if (total_empty > (RX_QUEUE_SIZE / 2))
1333 /* Rx interrupt, but nothing sent from uCode */
1335 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
1338 rxb = rxq->queue[i];
1340 /* If an RXB doesn't have a Rx queue slot associated with it,
1341 * then a bug has been introduced in the queue refilling
1342 * routines -- catch it here */
1343 BUG_ON(rxb == NULL);
1345 rxq->queue[i] = NULL;
1347 pci_unmap_page(priv->pci_dev, rxb->page_dma,
1348 PAGE_SIZE << priv->hw_params.rx_page_order,
1349 PCI_DMA_FROMDEVICE);
1350 pkt = rxb_addr(rxb);
1352 trace_iwlwifi_dev_rx(priv, pkt,
1353 le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK);
1355 /* Reclaim a command buffer only if this packet is a response
1356 * to a (driver-originated) command.
1357 * If the packet (e.g. Rx frame) originated from uCode,
1358 * there is no command buffer to reclaim.
1359 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1360 * but apparently a few don't get set; catch them here. */
1361 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1362 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1363 (pkt->hdr.cmd != REPLY_TX);
1365 /* Based on type of command response or notification,
1366 * handle those that need handling via function in
1367 * rx_handlers table. See iwl3945_setup_rx_handlers() */
1368 if (priv->rx_handlers[pkt->hdr.cmd]) {
1369 IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r, i,
1370 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1371 priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
1372 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1374 /* No handling needed */
1376 "r %d i %d No handler needed for %s, 0x%02x\n",
1377 r, i, get_cmd_string(pkt->hdr.cmd),
1382 * XXX: After here, we should always check rxb->page
1383 * against NULL before touching it or its virtual
1384 * memory (pkt). Because some rx_handler might have
1385 * already taken or freed the pages.
1389 /* Invoke any callbacks, transfer the buffer to caller,
1390 * and fire off the (possibly) blocking iwl_send_cmd()
1391 * as we reclaim the driver command queue */
1393 iwl_tx_cmd_complete(priv, rxb);
1395 IWL_WARN(priv, "Claim null rxb?\n");
1398 /* Reuse the page if possible. For notification packets and
1399 * SKBs that fail to Rx correctly, add them back into the
1400 * rx_free list for reuse later. */
1401 spin_lock_irqsave(&rxq->lock, flags);
1402 if (rxb->page != NULL) {
1403 rxb->page_dma = pci_map_page(priv->pci_dev, rxb->page,
1404 0, PAGE_SIZE << priv->hw_params.rx_page_order,
1405 PCI_DMA_FROMDEVICE);
1406 list_add_tail(&rxb->list, &rxq->rx_free);
1409 list_add_tail(&rxb->list, &rxq->rx_used);
1411 spin_unlock_irqrestore(&rxq->lock, flags);
1413 i = (i + 1) & RX_QUEUE_MASK;
1414 /* If there are a lot of unused frames,
1415 * restock the Rx queue so ucode won't assert. */
1420 iwl3945_rx_replenish_now(priv);
1426 /* Backtrack one entry */
1429 iwl3945_rx_replenish_now(priv);
1431 iwl3945_rx_queue_restock(priv);
1434 /* call this function to flush any scheduled tasklet */
1435 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1437 /* wait to make sure we flush pending tasklet*/
1438 synchronize_irq(priv->pci_dev->irq);
1439 tasklet_kill(&priv->irq_tasklet);
1442 static const char *desc_lookup(int i)
1450 return "BAD_CHECKSUM";
1452 return "NMI_INTERRUPT";
1456 return "FATAL_ERROR";
1462 #define ERROR_START_OFFSET (1 * sizeof(u32))
1463 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1465 void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
1468 u32 desc, time, count, base, data1;
1469 u32 blink1, blink2, ilink1, ilink2;
1471 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1473 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1474 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1479 count = iwl_read_targ_mem(priv, base);
1481 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1482 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1483 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1484 priv->status, count);
1487 IWL_ERR(priv, "Desc Time asrtPC blink2 "
1488 "ilink1 nmiPC Line\n");
1489 for (i = ERROR_START_OFFSET;
1490 i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
1491 i += ERROR_ELEM_SIZE) {
1492 desc = iwl_read_targ_mem(priv, base + i);
1494 iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
1496 iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
1498 iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
1500 iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
1502 iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
1504 iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
1507 "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1508 desc_lookup(desc), desc, time, blink1, blink2,
1509 ilink1, ilink2, data1);
1510 trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, 0,
1511 0, blink1, blink2, ilink1, ilink2);
1515 #define EVENT_START_OFFSET (6 * sizeof(u32))
1518 * iwl3945_print_event_log - Dump error event log to syslog
1521 static int iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
1522 u32 num_events, u32 mode,
1523 int pos, char **buf, size_t bufsz)
1526 u32 base; /* SRAM byte address of event log header */
1527 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1528 u32 ptr; /* SRAM byte address of log data */
1529 u32 ev, time, data; /* event log data */
1530 unsigned long reg_flags;
1532 if (num_events == 0)
1535 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1538 event_size = 2 * sizeof(u32);
1540 event_size = 3 * sizeof(u32);
1542 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1544 /* Make sure device is powered up for SRAM reads */
1545 spin_lock_irqsave(&priv->reg_lock, reg_flags);
1546 iwl_grab_nic_access(priv);
1548 /* Set starting address; reads will auto-increment */
1549 _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
1552 /* "time" is actually "data" for mode 0 (no timestamp).
1553 * place event id # at far right for easier visual parsing. */
1554 for (i = 0; i < num_events; i++) {
1555 ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1556 time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1560 pos += scnprintf(*buf + pos, bufsz - pos,
1564 IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
1565 trace_iwlwifi_dev_ucode_event(priv, 0,
1569 data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1571 pos += scnprintf(*buf + pos, bufsz - pos,
1572 "%010u:0x%08x:%04u\n",
1575 IWL_ERR(priv, "%010u\t0x%08x\t%04u\n",
1577 trace_iwlwifi_dev_ucode_event(priv, time,
1583 /* Allow device to power down */
1584 iwl_release_nic_access(priv);
1585 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
1590 * iwl3945_print_last_event_logs - Dump the newest # of event log to syslog
1592 static int iwl3945_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1593 u32 num_wraps, u32 next_entry,
1595 int pos, char **buf, size_t bufsz)
1598 * display the newest DEFAULT_LOG_ENTRIES entries
1599 * i.e the entries just before the next ont that uCode would fill.
1602 if (next_entry < size) {
1603 pos = iwl3945_print_event_log(priv,
1604 capacity - (size - next_entry),
1605 size - next_entry, mode,
1607 pos = iwl3945_print_event_log(priv, 0,
1611 pos = iwl3945_print_event_log(priv, next_entry - size,
1615 if (next_entry < size)
1616 pos = iwl3945_print_event_log(priv, 0,
1620 pos = iwl3945_print_event_log(priv, next_entry - size,
1627 /* For sanity check only. Actual size is determined by uCode, typ. 512 */
1628 #define IWL3945_MAX_EVENT_LOG_SIZE (512)
1630 #define DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES (20)
1632 int iwl3945_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1633 char **buf, bool display)
1635 u32 base; /* SRAM byte address of event log header */
1636 u32 capacity; /* event log capacity in # entries */
1637 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1638 u32 num_wraps; /* # times uCode wrapped to top of log */
1639 u32 next_entry; /* index of next entry to be written by uCode */
1640 u32 size; /* # entries that we'll print */
1644 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1645 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1646 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1650 /* event log header */
1651 capacity = iwl_read_targ_mem(priv, base);
1652 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1653 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1654 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1656 if (capacity > IWL3945_MAX_EVENT_LOG_SIZE) {
1657 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
1658 capacity, IWL3945_MAX_EVENT_LOG_SIZE);
1659 capacity = IWL3945_MAX_EVENT_LOG_SIZE;
1662 if (next_entry > IWL3945_MAX_EVENT_LOG_SIZE) {
1663 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1664 next_entry, IWL3945_MAX_EVENT_LOG_SIZE);
1665 next_entry = IWL3945_MAX_EVENT_LOG_SIZE;
1668 size = num_wraps ? capacity : next_entry;
1670 /* bail out if nothing in log */
1672 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1676 #ifdef CONFIG_IWLWIFI_DEBUG
1677 if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log)
1678 size = (size > DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES)
1679 ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES : size;
1681 size = (size > DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES)
1682 ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES : size;
1685 IWL_ERR(priv, "Start IWL Event Log Dump: display last %d count\n",
1688 #ifdef CONFIG_IWLWIFI_DEBUG
1691 bufsz = capacity * 48;
1694 *buf = kmalloc(bufsz, GFP_KERNEL);
1698 if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
1699 /* if uCode has wrapped back to top of log,
1700 * start at the oldest entry,
1701 * i.e the next one that uCode would fill.
1704 pos = iwl3945_print_event_log(priv, next_entry,
1705 capacity - next_entry, mode,
1708 /* (then/else) start at top of log */
1709 pos = iwl3945_print_event_log(priv, 0, next_entry, mode,
1712 pos = iwl3945_print_last_event_logs(priv, capacity, num_wraps,
1713 next_entry, size, mode,
1716 pos = iwl3945_print_last_event_logs(priv, capacity, num_wraps,
1717 next_entry, size, mode,
1723 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
1725 u32 inta, handled = 0;
1727 unsigned long flags;
1728 #ifdef CONFIG_IWLWIFI_DEBUG
1732 spin_lock_irqsave(&priv->lock, flags);
1734 /* Ack/clear/reset pending uCode interrupts.
1735 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1736 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1737 inta = iwl_read32(priv, CSR_INT);
1738 iwl_write32(priv, CSR_INT, inta);
1740 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1741 * Any new interrupts that happen after this, either while we're
1742 * in this tasklet, or later, will show up in next ISR/tasklet. */
1743 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1744 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1746 #ifdef CONFIG_IWLWIFI_DEBUG
1747 if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1748 /* just for debug */
1749 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1750 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1751 inta, inta_mask, inta_fh);
1755 spin_unlock_irqrestore(&priv->lock, flags);
1757 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1758 * atomic, make sure that inta covers all the interrupts that
1759 * we've discovered, even if FH interrupt came in just after
1760 * reading CSR_INT. */
1761 if (inta_fh & CSR39_FH_INT_RX_MASK)
1762 inta |= CSR_INT_BIT_FH_RX;
1763 if (inta_fh & CSR39_FH_INT_TX_MASK)
1764 inta |= CSR_INT_BIT_FH_TX;
1766 /* Now service all interrupt bits discovered above. */
1767 if (inta & CSR_INT_BIT_HW_ERR) {
1768 IWL_ERR(priv, "Hardware error detected. Restarting.\n");
1770 /* Tell the device to stop sending interrupts */
1771 iwl_disable_interrupts(priv);
1773 priv->isr_stats.hw++;
1774 iwl_irq_handle_error(priv);
1776 handled |= CSR_INT_BIT_HW_ERR;
1781 #ifdef CONFIG_IWLWIFI_DEBUG
1782 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1783 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1784 if (inta & CSR_INT_BIT_SCD) {
1785 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1786 "the frame/frames.\n");
1787 priv->isr_stats.sch++;
1790 /* Alive notification via Rx interrupt will do the real work */
1791 if (inta & CSR_INT_BIT_ALIVE) {
1792 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1793 priv->isr_stats.alive++;
1797 /* Safely ignore these bits for debug checks below */
1798 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1800 /* Error detected by uCode */
1801 if (inta & CSR_INT_BIT_SW_ERR) {
1802 IWL_ERR(priv, "Microcode SW error detected. "
1803 "Restarting 0x%X.\n", inta);
1804 priv->isr_stats.sw++;
1805 priv->isr_stats.sw_err = inta;
1806 iwl_irq_handle_error(priv);
1807 handled |= CSR_INT_BIT_SW_ERR;
1810 /* uCode wakes up after power-down sleep */
1811 if (inta & CSR_INT_BIT_WAKEUP) {
1812 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1813 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1814 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1815 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1816 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1817 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1818 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1819 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1821 priv->isr_stats.wakeup++;
1822 handled |= CSR_INT_BIT_WAKEUP;
1825 /* All uCode command responses, including Tx command responses,
1826 * Rx "responses" (frame-received notification), and other
1827 * notifications from uCode come through here*/
1828 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1829 iwl3945_rx_handle(priv);
1830 priv->isr_stats.rx++;
1831 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1834 if (inta & CSR_INT_BIT_FH_TX) {
1835 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1836 priv->isr_stats.tx++;
1838 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
1839 iwl_write_direct32(priv, FH39_TCSR_CREDIT
1840 (FH39_SRVC_CHNL), 0x0);
1841 handled |= CSR_INT_BIT_FH_TX;
1844 if (inta & ~handled) {
1845 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1846 priv->isr_stats.unhandled++;
1849 if (inta & ~priv->inta_mask) {
1850 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1851 inta & ~priv->inta_mask);
1852 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
1855 /* Re-enable all interrupts */
1856 /* only Re-enable if disabled by irq */
1857 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1858 iwl_enable_interrupts(priv);
1860 #ifdef CONFIG_IWLWIFI_DEBUG
1861 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1862 inta = iwl_read32(priv, CSR_INT);
1863 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1864 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1865 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1866 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1871 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
1872 enum ieee80211_band band,
1873 u8 is_active, u8 n_probes,
1874 struct iwl3945_scan_channel *scan_ch)
1876 struct ieee80211_channel *chan;
1877 const struct ieee80211_supported_band *sband;
1878 const struct iwl_channel_info *ch_info;
1879 u16 passive_dwell = 0;
1880 u16 active_dwell = 0;
1883 sband = iwl_get_hw_mode(priv, band);
1887 active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
1888 passive_dwell = iwl_get_passive_dwell_time(priv, band);
1890 if (passive_dwell <= active_dwell)
1891 passive_dwell = active_dwell + 1;
1893 for (i = 0, added = 0; i < priv->scan_request->n_channels; i++) {
1894 chan = priv->scan_request->channels[i];
1896 if (chan->band != band)
1899 scan_ch->channel = chan->hw_value;
1901 ch_info = iwl_get_channel_info(priv, band, scan_ch->channel);
1902 if (!is_channel_valid(ch_info)) {
1903 IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n",
1908 scan_ch->active_dwell = cpu_to_le16(active_dwell);
1909 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
1910 /* If passive , set up for auto-switch
1911 * and use long active_dwell time.
1913 if (!is_active || is_channel_passive(ch_info) ||
1914 (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
1915 scan_ch->type = 0; /* passive */
1916 if (IWL_UCODE_API(priv->ucode_ver) == 1)
1917 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
1919 scan_ch->type = 1; /* active */
1922 /* Set direct probe bits. These may be used both for active
1923 * scan channels (probes gets sent right away),
1924 * or for passive channels (probes get se sent only after
1925 * hearing clear Rx packet).*/
1926 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
1928 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1930 /* uCode v1 does not allow setting direct probe bits on
1931 * passive channel. */
1932 if ((scan_ch->type & 1) && n_probes)
1933 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1936 /* Set txpower levels to defaults */
1937 scan_ch->tpc.dsp_atten = 110;
1938 /* scan_pwr_info->tpc.dsp_atten; */
1940 /*scan_pwr_info->tpc.tx_gain; */
1941 if (band == IEEE80211_BAND_5GHZ)
1942 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
1944 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
1945 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
1947 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
1951 IWL_DEBUG_SCAN(priv, "Scanning %d [%s %d]\n",
1953 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
1954 (scan_ch->type & 1) ?
1955 active_dwell : passive_dwell);
1961 IWL_DEBUG_SCAN(priv, "total channels to scan %d \n", added);
1965 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
1966 struct ieee80211_rate *rates)
1970 for (i = 0; i < IWL_RATE_COUNT; i++) {
1971 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
1972 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1973 rates[i].hw_value_short = i;
1975 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
1977 * If CCK != 1M then set short preamble rate flag.
1979 rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
1980 0 : IEEE80211_RATE_SHORT_PREAMBLE;
1985 /******************************************************************************
1987 * uCode download functions
1989 ******************************************************************************/
1991 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
1993 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1994 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1995 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1996 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1997 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1998 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
2002 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
2003 * looking at all data.
2005 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
2012 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2014 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2015 IWL39_RTC_INST_LOWER_BOUND);
2018 for (; len > 0; len -= sizeof(u32), image++) {
2019 /* read data comes through single port, auto-incr addr */
2020 /* NOTE: Use the debugless read so we don't flood kernel log
2021 * if IWL_DL_IO is set */
2022 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2023 if (val != le32_to_cpu(*image)) {
2024 IWL_ERR(priv, "uCode INST section is invalid at "
2025 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2026 save_len - len, val, le32_to_cpu(*image));
2036 IWL_DEBUG_INFO(priv,
2037 "ucode image in INSTRUCTION memory is good\n");
2044 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
2045 * using sample data 100 bytes apart. If these sample points are good,
2046 * it's a pretty good bet that everything between them is good, too.
2048 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
2055 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2057 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
2058 /* read data comes through single port, auto-incr addr */
2059 /* NOTE: Use the debugless read so we don't flood kernel log
2060 * if IWL_DL_IO is set */
2061 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2062 i + IWL39_RTC_INST_LOWER_BOUND);
2063 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2064 if (val != le32_to_cpu(*image)) {
2065 #if 0 /* Enable this if you want to see details */
2066 IWL_ERR(priv, "uCode INST section is invalid at "
2067 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2082 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2083 * and verify its contents
2085 static int iwl3945_verify_ucode(struct iwl_priv *priv)
2092 image = (__le32 *)priv->ucode_boot.v_addr;
2093 len = priv->ucode_boot.len;
2094 rc = iwl3945_verify_inst_sparse(priv, image, len);
2096 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2100 /* Try initialize */
2101 image = (__le32 *)priv->ucode_init.v_addr;
2102 len = priv->ucode_init.len;
2103 rc = iwl3945_verify_inst_sparse(priv, image, len);
2105 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2109 /* Try runtime/protocol */
2110 image = (__le32 *)priv->ucode_code.v_addr;
2111 len = priv->ucode_code.len;
2112 rc = iwl3945_verify_inst_sparse(priv, image, len);
2114 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2118 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2120 /* Since nothing seems to match, show first several data entries in
2121 * instruction SRAM, so maybe visual inspection will give a clue.
2122 * Selection of bootstrap image (vs. other images) is arbitrary. */
2123 image = (__le32 *)priv->ucode_boot.v_addr;
2124 len = priv->ucode_boot.len;
2125 rc = iwl3945_verify_inst_full(priv, image, len);
2130 static void iwl3945_nic_start(struct iwl_priv *priv)
2132 /* Remove all resets to allow NIC to operate */
2133 iwl_write32(priv, CSR_RESET, 0);
2137 * iwl3945_read_ucode - Read uCode images from disk file.
2139 * Copy into buffers for card to fetch via bus-mastering
2141 static int iwl3945_read_ucode(struct iwl_priv *priv)
2143 const struct iwl_ucode_header *ucode;
2144 int ret = -EINVAL, index;
2145 const struct firmware *ucode_raw;
2146 /* firmware file name contains uCode/driver compatibility version */
2147 const char *name_pre = priv->cfg->fw_name_pre;
2148 const unsigned int api_max = priv->cfg->ucode_api_max;
2149 const unsigned int api_min = priv->cfg->ucode_api_min;
2153 u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
2155 /* Ask kernel firmware_class module to get the boot firmware off disk.
2156 * request_firmware() is synchronous, file is in memory on return. */
2157 for (index = api_max; index >= api_min; index--) {
2158 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
2159 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
2161 IWL_ERR(priv, "%s firmware file req failed: %d\n",
2168 if (index < api_max)
2169 IWL_ERR(priv, "Loaded firmware %s, "
2170 "which is deprecated. "
2171 " Please use API v%u instead.\n",
2173 IWL_DEBUG_INFO(priv, "Got firmware '%s' file "
2174 "(%zd bytes) from disk\n",
2175 buf, ucode_raw->size);
2183 /* Make sure that we got at least our header! */
2184 if (ucode_raw->size < priv->cfg->ops->ucode->get_header_size(1)) {
2185 IWL_ERR(priv, "File size way too small!\n");
2190 /* Data from ucode file: header followed by uCode images */
2191 ucode = (struct iwl_ucode_header *)ucode_raw->data;
2193 priv->ucode_ver = le32_to_cpu(ucode->ver);
2194 api_ver = IWL_UCODE_API(priv->ucode_ver);
2195 inst_size = priv->cfg->ops->ucode->get_inst_size(ucode, api_ver);
2196 data_size = priv->cfg->ops->ucode->get_data_size(ucode, api_ver);
2197 init_size = priv->cfg->ops->ucode->get_init_size(ucode, api_ver);
2199 priv->cfg->ops->ucode->get_init_data_size(ucode, api_ver);
2200 boot_size = priv->cfg->ops->ucode->get_boot_size(ucode, api_ver);
2201 src = priv->cfg->ops->ucode->get_data(ucode, api_ver);
2203 /* api_ver should match the api version forming part of the
2204 * firmware filename ... but we don't check for that and only rely
2205 * on the API version read from firmware header from here on forward */
2207 if (api_ver < api_min || api_ver > api_max) {
2208 IWL_ERR(priv, "Driver unable to support your firmware API. "
2209 "Driver supports v%u, firmware is v%u.\n",
2211 priv->ucode_ver = 0;
2215 if (api_ver != api_max)
2216 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
2217 "got %u. New firmware can be obtained "
2218 "from http://www.intellinuxwireless.org.\n",
2221 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
2222 IWL_UCODE_MAJOR(priv->ucode_ver),
2223 IWL_UCODE_MINOR(priv->ucode_ver),
2224 IWL_UCODE_API(priv->ucode_ver),
2225 IWL_UCODE_SERIAL(priv->ucode_ver));
2227 snprintf(priv->hw->wiphy->fw_version,
2228 sizeof(priv->hw->wiphy->fw_version),
2230 IWL_UCODE_MAJOR(priv->ucode_ver),
2231 IWL_UCODE_MINOR(priv->ucode_ver),
2232 IWL_UCODE_API(priv->ucode_ver),
2233 IWL_UCODE_SERIAL(priv->ucode_ver));
2235 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2237 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
2239 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
2241 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
2243 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
2245 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
2249 /* Verify size of file vs. image size info in file's header */
2250 if (ucode_raw->size != priv->cfg->ops->ucode->get_header_size(api_ver) +
2251 inst_size + data_size + init_size +
2252 init_data_size + boot_size) {
2254 IWL_DEBUG_INFO(priv,
2255 "uCode file size %zd does not match expected size\n",
2261 /* Verify that uCode images will fit in card's SRAM */
2262 if (inst_size > IWL39_MAX_INST_SIZE) {
2263 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
2269 if (data_size > IWL39_MAX_DATA_SIZE) {
2270 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
2275 if (init_size > IWL39_MAX_INST_SIZE) {
2276 IWL_DEBUG_INFO(priv,
2277 "uCode init instr len %d too large to fit in\n",
2282 if (init_data_size > IWL39_MAX_DATA_SIZE) {
2283 IWL_DEBUG_INFO(priv,
2284 "uCode init data len %d too large to fit in\n",
2289 if (boot_size > IWL39_MAX_BSM_SIZE) {
2290 IWL_DEBUG_INFO(priv,
2291 "uCode boot instr len %d too large to fit in\n",
2297 /* Allocate ucode buffers for card's bus-master loading ... */
2299 /* Runtime instructions and 2 copies of data:
2300 * 1) unmodified from disk
2301 * 2) backup cache for save/restore during power-downs */
2302 priv->ucode_code.len = inst_size;
2303 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2305 priv->ucode_data.len = data_size;
2306 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2308 priv->ucode_data_backup.len = data_size;
2309 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2311 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2312 !priv->ucode_data_backup.v_addr)
2315 /* Initialization instructions and data */
2316 if (init_size && init_data_size) {
2317 priv->ucode_init.len = init_size;
2318 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2320 priv->ucode_init_data.len = init_data_size;
2321 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2323 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2327 /* Bootstrap (instructions only, no data) */
2329 priv->ucode_boot.len = boot_size;
2330 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2332 if (!priv->ucode_boot.v_addr)
2336 /* Copy images into buffers for card's bus-master reads ... */
2338 /* Runtime instructions (first block of data in file) */
2340 IWL_DEBUG_INFO(priv,
2341 "Copying (but not loading) uCode instr len %zd\n", len);
2342 memcpy(priv->ucode_code.v_addr, src, len);
2345 IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2346 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2348 /* Runtime data (2nd block)
2349 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
2351 IWL_DEBUG_INFO(priv,
2352 "Copying (but not loading) uCode data len %zd\n", len);
2353 memcpy(priv->ucode_data.v_addr, src, len);
2354 memcpy(priv->ucode_data_backup.v_addr, src, len);
2357 /* Initialization instructions (3rd block) */
2360 IWL_DEBUG_INFO(priv,
2361 "Copying (but not loading) init instr len %zd\n", len);
2362 memcpy(priv->ucode_init.v_addr, src, len);
2366 /* Initialization data (4th block) */
2367 if (init_data_size) {
2368 len = init_data_size;
2369 IWL_DEBUG_INFO(priv,
2370 "Copying (but not loading) init data len %zd\n", len);
2371 memcpy(priv->ucode_init_data.v_addr, src, len);
2375 /* Bootstrap instructions (5th block) */
2377 IWL_DEBUG_INFO(priv,
2378 "Copying (but not loading) boot instr len %zd\n", len);
2379 memcpy(priv->ucode_boot.v_addr, src, len);
2381 /* We have our copies now, allow OS release its copies */
2382 release_firmware(ucode_raw);
2386 IWL_ERR(priv, "failed to allocate pci memory\n");
2388 iwl3945_dealloc_ucode_pci(priv);
2391 release_firmware(ucode_raw);
2399 * iwl3945_set_ucode_ptrs - Set uCode address location
2401 * Tell initialization uCode where to find runtime uCode.
2403 * BSM registers initially contain pointers to initialization uCode.
2404 * We need to replace them to load runtime uCode inst and data,
2405 * and to save runtime data when powering down.
2407 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
2412 /* bits 31:0 for 3945 */
2413 pinst = priv->ucode_code.p_addr;
2414 pdata = priv->ucode_data_backup.p_addr;
2416 /* Tell bootstrap uCode where to find image to load */
2417 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2418 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2419 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
2420 priv->ucode_data.len);
2422 /* Inst byte count must be last to set up, bit 31 signals uCode
2423 * that all new ptr/size info is in place */
2424 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
2425 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
2427 IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
2433 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2435 * Called after REPLY_ALIVE notification received from "initialize" uCode.
2437 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2439 static void iwl3945_init_alive_start(struct iwl_priv *priv)
2441 /* Check alive response for "valid" sign from uCode */
2442 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
2443 /* We had an error bringing up the hardware, so take it
2444 * all the way back down so we can try again */
2445 IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n");
2449 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2450 * This is a paranoid check, because we would not have gotten the
2451 * "initialize" alive if code weren't properly loaded. */
2452 if (iwl3945_verify_ucode(priv)) {
2453 /* Runtime instruction load was bad;
2454 * take it all the way back down so we can try again */
2455 IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
2459 /* Send pointers to protocol/runtime uCode image ... init code will
2460 * load and launch runtime uCode, which will send us another "Alive"
2462 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
2463 if (iwl3945_set_ucode_ptrs(priv)) {
2464 /* Runtime instruction load won't happen;
2465 * take it all the way back down so we can try again */
2466 IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
2472 queue_work(priv->workqueue, &priv->restart);
2476 * iwl3945_alive_start - called after REPLY_ALIVE notification received
2477 * from protocol/runtime uCode (initialization uCode's
2478 * Alive gets handled by iwl3945_init_alive_start()).
2480 static void iwl3945_alive_start(struct iwl_priv *priv)
2482 int thermal_spin = 0;
2485 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2487 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2488 /* We had an error bringing up the hardware, so take it
2489 * all the way back down so we can try again */
2490 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2494 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2495 * This is a paranoid check, because we would not have gotten the
2496 * "runtime" alive if code weren't properly loaded. */
2497 if (iwl3945_verify_ucode(priv)) {
2498 /* Runtime instruction load was bad;
2499 * take it all the way back down so we can try again */
2500 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2504 iwl_clear_stations_table(priv);
2506 rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
2507 IWL_DEBUG_INFO(priv, "RFKILL status: 0x%x\n", rfkill);
2510 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2511 /* if RFKILL is not on, then wait for thermal
2512 * sensor in adapter to kick in */
2513 while (iwl3945_hw_get_temperature(priv) == 0) {
2519 IWL_DEBUG_INFO(priv, "Thermal calibration took %dus\n",
2522 set_bit(STATUS_RF_KILL_HW, &priv->status);
2524 /* After the ALIVE response, we can send commands to 3945 uCode */
2525 set_bit(STATUS_ALIVE, &priv->status);
2527 if (iwl_is_rfkill(priv))
2530 ieee80211_wake_queues(priv->hw);
2532 priv->active_rate = priv->rates_mask;
2533 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2535 iwl_power_update_mode(priv, true);
2537 if (iwl_is_associated(priv)) {
2538 struct iwl3945_rxon_cmd *active_rxon =
2539 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
2541 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2542 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2544 /* Initialize our rx_config data */
2545 iwl_connection_init_rx_config(priv, priv->iw_mode);
2548 /* Configure Bluetooth device coexistence support */
2549 iwl_send_bt_config(priv);
2551 /* Configure the adapter for unassociated operation */
2552 iwlcore_commit_rxon(priv);
2554 iwl3945_reg_txpower_periodic(priv);
2556 iwl_leds_init(priv);
2558 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2559 set_bit(STATUS_READY, &priv->status);
2560 wake_up_interruptible(&priv->wait_command_queue);
2562 /* reassociate for ADHOC mode */
2563 if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
2564 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
2567 iwl_mac_beacon_update(priv->hw, beacon);
2570 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2571 iwl_set_mode(priv, priv->iw_mode);
2576 queue_work(priv->workqueue, &priv->restart);
2579 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
2581 static void __iwl3945_down(struct iwl_priv *priv)
2583 unsigned long flags;
2584 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2585 struct ieee80211_conf *conf = NULL;
2587 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2589 conf = ieee80211_get_hw_conf(priv->hw);
2592 set_bit(STATUS_EXIT_PENDING, &priv->status);
2594 iwl_clear_stations_table(priv);
2596 /* Unblock any waiting calls */
2597 wake_up_interruptible_all(&priv->wait_command_queue);
2599 /* Wipe out the EXIT_PENDING status bit if we are not actually
2600 * exiting the module */
2602 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2604 /* stop and reset the on-board processor */
2605 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2607 /* tell the device to stop sending interrupts */
2608 spin_lock_irqsave(&priv->lock, flags);
2609 iwl_disable_interrupts(priv);
2610 spin_unlock_irqrestore(&priv->lock, flags);
2611 iwl_synchronize_irq(priv);
2613 if (priv->mac80211_registered)
2614 ieee80211_stop_queues(priv->hw);
2616 /* If we have not previously called iwl3945_init() then
2617 * clear all bits but the RF Kill bits and return */
2618 if (!iwl_is_init(priv)) {
2619 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2621 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2622 STATUS_GEO_CONFIGURED |
2623 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2624 STATUS_EXIT_PENDING;
2628 /* ...otherwise clear out all the status bits but the RF Kill
2629 * bit and continue taking the NIC down. */
2630 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2632 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2633 STATUS_GEO_CONFIGURED |
2634 test_bit(STATUS_FW_ERROR, &priv->status) <<
2636 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2637 STATUS_EXIT_PENDING;
2639 iwl3945_hw_txq_ctx_stop(priv);
2640 iwl3945_hw_rxq_stop(priv);
2642 /* Power-down device's busmaster DMA clocks */
2643 iwl_write_prph(priv, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT);
2646 /* Stop the device, and put it in low power state */
2647 priv->cfg->ops->lib->apm_ops.stop(priv);
2650 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2652 if (priv->ibss_beacon)
2653 dev_kfree_skb(priv->ibss_beacon);
2654 priv->ibss_beacon = NULL;
2656 /* clear out any free frames */
2657 iwl3945_clear_free_frames(priv);
2660 static void iwl3945_down(struct iwl_priv *priv)
2662 mutex_lock(&priv->mutex);
2663 __iwl3945_down(priv);
2664 mutex_unlock(&priv->mutex);
2666 iwl3945_cancel_deferred_work(priv);
2669 #define MAX_HW_RESTARTS 5
2671 static int __iwl3945_up(struct iwl_priv *priv)
2675 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2676 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2680 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2681 IWL_ERR(priv, "ucode not available for device bring up\n");
2685 /* If platform's RF_KILL switch is NOT set to KILL */
2686 if (iwl_read32(priv, CSR_GP_CNTRL) &
2687 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2688 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2690 set_bit(STATUS_RF_KILL_HW, &priv->status);
2691 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2695 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2697 rc = iwl3945_hw_nic_init(priv);
2699 IWL_ERR(priv, "Unable to int nic\n");
2703 /* make sure rfkill handshake bits are cleared */
2704 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2705 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2706 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2708 /* clear (again), then enable host interrupts */
2709 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2710 iwl_enable_interrupts(priv);
2712 /* really make sure rfkill handshake bits are cleared */
2713 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2714 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2716 /* Copy original ucode data image from disk into backup cache.
2717 * This will be used to initialize the on-board processor's
2718 * data SRAM for a clean start when the runtime program first loads. */
2719 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2720 priv->ucode_data.len);
2722 /* We return success when we resume from suspend and rf_kill is on. */
2723 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
2726 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2728 iwl_clear_stations_table(priv);
2730 /* load bootstrap state machine,
2731 * load bootstrap program into processor's memory,
2732 * prepare to load the "initialize" uCode */
2733 priv->cfg->ops->lib->load_ucode(priv);
2737 "Unable to set up bootstrap uCode: %d\n", rc);
2741 /* start card; "initialize" will load runtime ucode */
2742 iwl3945_nic_start(priv);
2744 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2749 set_bit(STATUS_EXIT_PENDING, &priv->status);
2750 __iwl3945_down(priv);
2751 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2753 /* tried to restart and config the device for as long as our
2754 * patience could withstand */
2755 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2760 /*****************************************************************************
2762 * Workqueue callbacks
2764 *****************************************************************************/
2766 static void iwl3945_bg_init_alive_start(struct work_struct *data)
2768 struct iwl_priv *priv =
2769 container_of(data, struct iwl_priv, init_alive_start.work);
2771 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2774 mutex_lock(&priv->mutex);
2775 iwl3945_init_alive_start(priv);
2776 mutex_unlock(&priv->mutex);
2779 static void iwl3945_bg_alive_start(struct work_struct *data)
2781 struct iwl_priv *priv =
2782 container_of(data, struct iwl_priv, alive_start.work);
2784 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2787 mutex_lock(&priv->mutex);
2788 iwl3945_alive_start(priv);
2789 mutex_unlock(&priv->mutex);
2793 * 3945 cannot interrupt driver when hardware rf kill switch toggles;
2794 * driver must poll CSR_GP_CNTRL_REG register for change. This register
2795 * *is* readable even when device has been SW_RESET into low power mode
2796 * (e.g. during RF KILL).
2798 static void iwl3945_rfkill_poll(struct work_struct *data)
2800 struct iwl_priv *priv =
2801 container_of(data, struct iwl_priv, rfkill_poll.work);
2802 bool old_rfkill = test_bit(STATUS_RF_KILL_HW, &priv->status);
2803 bool new_rfkill = !(iwl_read32(priv, CSR_GP_CNTRL)
2804 & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW);
2806 if (new_rfkill != old_rfkill) {
2808 set_bit(STATUS_RF_KILL_HW, &priv->status);
2810 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2812 wiphy_rfkill_set_hw_state(priv->hw->wiphy, new_rfkill);
2814 IWL_DEBUG_RF_KILL(priv, "RF_KILL bit toggled to %s.\n",
2815 new_rfkill ? "disable radio" : "enable radio");
2818 /* Keep this running, even if radio now enabled. This will be
2819 * cancelled in mac_start() if system decides to start again */
2820 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
2821 round_jiffies_relative(2 * HZ));
2825 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
2826 static void iwl3945_bg_request_scan(struct work_struct *data)
2828 struct iwl_priv *priv =
2829 container_of(data, struct iwl_priv, request_scan);
2830 struct iwl_host_cmd cmd = {
2831 .id = REPLY_SCAN_CMD,
2832 .len = sizeof(struct iwl3945_scan_cmd),
2833 .flags = CMD_SIZE_HUGE,
2836 struct iwl3945_scan_cmd *scan;
2837 struct ieee80211_conf *conf = NULL;
2839 enum ieee80211_band band;
2840 bool is_active = false;
2842 conf = ieee80211_get_hw_conf(priv->hw);
2844 mutex_lock(&priv->mutex);
2846 cancel_delayed_work(&priv->scan_check);
2848 if (!iwl_is_ready(priv)) {
2849 IWL_WARN(priv, "request scan called when driver not ready.\n");
2853 /* Make sure the scan wasn't canceled before this queued work
2854 * was given the chance to run... */
2855 if (!test_bit(STATUS_SCANNING, &priv->status))
2858 /* This should never be called or scheduled if there is currently
2859 * a scan active in the hardware. */
2860 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
2861 IWL_DEBUG_INFO(priv, "Multiple concurrent scan requests "
2862 "Ignoring second request.\n");
2867 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2868 IWL_DEBUG_SCAN(priv, "Aborting scan due to device shutdown\n");
2872 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2874 "Scan request while abort pending. Queuing.\n");
2878 if (iwl_is_rfkill(priv)) {
2879 IWL_DEBUG_HC(priv, "Aborting scan due to RF Kill activation\n");
2883 if (!test_bit(STATUS_READY, &priv->status)) {
2885 "Scan request while uninitialized. Queuing.\n");
2889 if (!priv->scan_bands) {
2890 IWL_DEBUG_HC(priv, "Aborting scan due to no requested bands\n");
2895 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
2896 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
2903 memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
2905 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
2906 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
2908 if (iwl_is_associated(priv)) {
2911 u32 suspend_time = 100;
2912 u32 scan_suspend_time = 100;
2913 unsigned long flags;
2915 IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
2917 spin_lock_irqsave(&priv->lock, flags);
2918 interval = priv->beacon_int;
2919 spin_unlock_irqrestore(&priv->lock, flags);
2921 scan->suspend_time = 0;
2922 scan->max_out_time = cpu_to_le32(200 * 1024);
2924 interval = suspend_time;
2926 * suspend time format:
2927 * 0-19: beacon interval in usec (time before exec.)
2929 * 24-31: number of beacons (suspend between channels)
2932 extra = (suspend_time / interval) << 24;
2933 scan_suspend_time = 0xFF0FFFFF &
2934 (extra | ((suspend_time % interval) * 1024));
2936 scan->suspend_time = cpu_to_le32(scan_suspend_time);
2937 IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
2938 scan_suspend_time, interval);
2941 if (priv->scan_request->n_ssids) {
2943 IWL_DEBUG_SCAN(priv, "Kicking off active scan\n");
2944 for (i = 0; i < priv->scan_request->n_ssids; i++) {
2945 /* always does wildcard anyway */
2946 if (!priv->scan_request->ssids[i].ssid_len)
2948 scan->direct_scan[p].id = WLAN_EID_SSID;
2949 scan->direct_scan[p].len =
2950 priv->scan_request->ssids[i].ssid_len;
2951 memcpy(scan->direct_scan[p].ssid,
2952 priv->scan_request->ssids[i].ssid,
2953 priv->scan_request->ssids[i].ssid_len);
2959 IWL_DEBUG_SCAN(priv, "Kicking off passive scan.\n");
2961 /* We don't build a direct scan probe request; the uCode will do
2962 * that based on the direct_mask added to each channel entry */
2963 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
2964 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
2965 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2967 /* flags + rate selection */
2969 if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
2970 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
2971 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
2972 scan->good_CRC_th = 0;
2973 band = IEEE80211_BAND_2GHZ;
2974 } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
2975 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
2977 * If active scaning is requested but a certain channel
2978 * is marked passive, we can do active scanning if we
2979 * detect transmissions.
2981 scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH : 0;
2982 band = IEEE80211_BAND_5GHZ;
2984 IWL_WARN(priv, "Invalid scan band count\n");
2988 scan->tx_cmd.len = cpu_to_le16(
2989 iwl_fill_probe_req(priv,
2990 (struct ieee80211_mgmt *)scan->data,
2991 priv->scan_request->ie,
2992 priv->scan_request->ie_len,
2993 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
2995 /* select Rx antennas */
2996 scan->flags |= iwl3945_get_antenna_flags(priv);
2998 if (iwl_is_monitor_mode(priv))
2999 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
3001 scan->channel_count =
3002 iwl3945_get_channels_for_scan(priv, band, is_active, n_probes,
3003 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3005 if (scan->channel_count == 0) {
3006 IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
3010 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
3011 scan->channel_count * sizeof(struct iwl3945_scan_channel);
3013 scan->len = cpu_to_le16(cmd.len);
3015 set_bit(STATUS_SCAN_HW, &priv->status);
3016 rc = iwl_send_cmd_sync(priv, &cmd);
3020 queue_delayed_work(priv->workqueue, &priv->scan_check,
3021 IWL_SCAN_CHECK_WATCHDOG);
3023 mutex_unlock(&priv->mutex);
3027 /* can not perform scan make sure we clear scanning
3028 * bits from status so next scan request can be performed.
3029 * if we dont clear scanning status bit here all next scan
3032 clear_bit(STATUS_SCAN_HW, &priv->status);
3033 clear_bit(STATUS_SCANNING, &priv->status);
3035 /* inform mac80211 scan aborted */
3036 queue_work(priv->workqueue, &priv->scan_completed);
3037 mutex_unlock(&priv->mutex);
3040 static void iwl3945_bg_up(struct work_struct *data)
3042 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
3044 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3047 mutex_lock(&priv->mutex);
3049 mutex_unlock(&priv->mutex);
3052 static void iwl3945_bg_restart(struct work_struct *data)
3054 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3056 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3059 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
3060 mutex_lock(&priv->mutex);
3063 mutex_unlock(&priv->mutex);
3065 ieee80211_restart_hw(priv->hw);
3068 queue_work(priv->workqueue, &priv->up);
3072 static void iwl3945_bg_rx_replenish(struct work_struct *data)
3074 struct iwl_priv *priv =
3075 container_of(data, struct iwl_priv, rx_replenish);
3077 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3080 mutex_lock(&priv->mutex);
3081 iwl3945_rx_replenish(priv);
3082 mutex_unlock(&priv->mutex);
3085 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3087 void iwl3945_post_associate(struct iwl_priv *priv)
3090 struct ieee80211_conf *conf = NULL;
3092 if (priv->iw_mode == NL80211_IFTYPE_AP) {
3093 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
3098 IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3099 priv->assoc_id, priv->active_rxon.bssid_addr);
3101 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3104 if (!priv->vif || !priv->is_open)
3107 iwl_scan_cancel_timeout(priv, 200);
3109 conf = ieee80211_get_hw_conf(priv->hw);
3111 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3112 iwlcore_commit_rxon(priv);
3114 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3115 iwl_setup_rxon_timing(priv);
3116 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3117 sizeof(priv->rxon_timing), &priv->rxon_timing);
3119 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3120 "Attempting to continue.\n");
3122 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3124 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3126 IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3127 priv->assoc_id, priv->beacon_int);
3129 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3130 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3132 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3134 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3135 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3136 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3138 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3140 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3141 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3145 iwlcore_commit_rxon(priv);
3147 switch (priv->iw_mode) {
3148 case NL80211_IFTYPE_STATION:
3149 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
3152 case NL80211_IFTYPE_ADHOC:
3155 iwl_add_station(priv, priv->bssid, 0, CMD_SYNC, NULL);
3156 iwl3945_sync_sta(priv, IWL_STA_ID,
3157 (priv->band == IEEE80211_BAND_5GHZ) ?
3158 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
3160 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
3161 iwl3945_send_beacon_cmd(priv);
3166 IWL_ERR(priv, "%s Should not be called in %d mode\n",
3167 __func__, priv->iw_mode);
3171 iwl_activate_qos(priv, 0);
3173 /* we have just associated, don't start scan too early */
3174 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
3177 /*****************************************************************************
3179 * mac80211 entry point functions
3181 *****************************************************************************/
3183 #define UCODE_READY_TIMEOUT (2 * HZ)
3185 static int iwl3945_mac_start(struct ieee80211_hw *hw)
3187 struct iwl_priv *priv = hw->priv;
3190 IWL_DEBUG_MAC80211(priv, "enter\n");
3192 /* we should be verifying the device is ready to be opened */
3193 mutex_lock(&priv->mutex);
3195 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3196 * ucode filename and max sizes are card-specific. */
3198 if (!priv->ucode_code.len) {
3199 ret = iwl3945_read_ucode(priv);
3201 IWL_ERR(priv, "Could not read microcode: %d\n", ret);
3202 mutex_unlock(&priv->mutex);
3203 goto out_release_irq;
3207 ret = __iwl3945_up(priv);
3209 mutex_unlock(&priv->mutex);
3212 goto out_release_irq;
3214 IWL_DEBUG_INFO(priv, "Start UP work.\n");
3216 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3217 * mac80211 will not be run successfully. */
3218 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3219 test_bit(STATUS_READY, &priv->status),
3220 UCODE_READY_TIMEOUT);
3222 if (!test_bit(STATUS_READY, &priv->status)) {
3224 "Wait for START_ALIVE timeout after %dms.\n",
3225 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3227 goto out_release_irq;
3231 /* ucode is running and will send rfkill notifications,
3232 * no need to poll the killswitch state anymore */
3233 cancel_delayed_work(&priv->rfkill_poll);
3235 iwl_led_start(priv);
3238 IWL_DEBUG_MAC80211(priv, "leave\n");
3243 IWL_DEBUG_MAC80211(priv, "leave - failed\n");
3247 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
3249 struct iwl_priv *priv = hw->priv;
3251 IWL_DEBUG_MAC80211(priv, "enter\n");
3253 if (!priv->is_open) {
3254 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
3260 if (iwl_is_ready_rf(priv)) {
3261 /* stop mac, cancel any scan request and clear
3262 * RXON_FILTER_ASSOC_MSK BIT
3264 mutex_lock(&priv->mutex);
3265 iwl_scan_cancel_timeout(priv, 100);
3266 mutex_unlock(&priv->mutex);
3271 flush_workqueue(priv->workqueue);
3273 /* start polling the killswitch state again */
3274 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
3275 round_jiffies_relative(2 * HZ));
3277 IWL_DEBUG_MAC80211(priv, "leave\n");
3280 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3282 struct iwl_priv *priv = hw->priv;
3284 IWL_DEBUG_MAC80211(priv, "enter\n");
3286 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3287 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3289 if (iwl3945_tx_skb(priv, skb))
3290 dev_kfree_skb_any(skb);
3292 IWL_DEBUG_MAC80211(priv, "leave\n");
3293 return NETDEV_TX_OK;
3296 void iwl3945_config_ap(struct iwl_priv *priv)
3300 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3303 /* The following should be done only at AP bring up */
3304 if (!(iwl_is_associated(priv))) {
3306 /* RXON - unassoc (to set timing command) */
3307 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3308 iwlcore_commit_rxon(priv);
3311 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3312 iwl_setup_rxon_timing(priv);
3313 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3314 sizeof(priv->rxon_timing),
3315 &priv->rxon_timing);
3317 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3318 "Attempting to continue.\n");
3320 /* FIXME: what should be the assoc_id for AP? */
3321 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3322 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3323 priv->staging_rxon.flags |=
3324 RXON_FLG_SHORT_PREAMBLE_MSK;
3326 priv->staging_rxon.flags &=
3327 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3329 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3330 if (priv->assoc_capability &
3331 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3332 priv->staging_rxon.flags |=
3333 RXON_FLG_SHORT_SLOT_MSK;
3335 priv->staging_rxon.flags &=
3336 ~RXON_FLG_SHORT_SLOT_MSK;
3338 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3339 priv->staging_rxon.flags &=
3340 ~RXON_FLG_SHORT_SLOT_MSK;
3342 /* restore RXON assoc */
3343 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3344 iwlcore_commit_rxon(priv);
3345 iwl_add_station(priv, iwl_bcast_addr, 0, CMD_SYNC, NULL);
3347 iwl3945_send_beacon_cmd(priv);
3349 /* FIXME - we need to add code here to detect a totally new
3350 * configuration, reset the AP, unassoc, rxon timing, assoc,
3351 * clear sta table, add BCAST sta... */
3354 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3355 struct ieee80211_vif *vif,
3356 struct ieee80211_sta *sta,
3357 struct ieee80211_key_conf *key)
3359 struct iwl_priv *priv = hw->priv;
3362 u8 sta_id = IWL_INVALID_STATION;
3365 IWL_DEBUG_MAC80211(priv, "enter\n");
3367 if (iwl3945_mod_params.sw_crypto) {
3368 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
3372 addr = sta ? sta->addr : iwl_bcast_addr;
3373 static_key = !iwl_is_associated(priv);
3376 sta_id = iwl_find_station(priv, addr);
3377 if (sta_id == IWL_INVALID_STATION) {
3378 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
3384 mutex_lock(&priv->mutex);
3385 iwl_scan_cancel_timeout(priv, 100);
3386 mutex_unlock(&priv->mutex);
3391 ret = iwl3945_set_static_key(priv, key);
3393 ret = iwl3945_set_dynamic_key(priv, key, sta_id);
3394 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
3398 ret = iwl3945_remove_static_key(priv);
3400 ret = iwl3945_clear_sta_key_info(priv, sta_id);
3401 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
3407 IWL_DEBUG_MAC80211(priv, "leave\n");
3412 /*****************************************************************************
3416 *****************************************************************************/
3418 #ifdef CONFIG_IWLWIFI_DEBUG
3421 * The following adds a new attribute to the sysfs representation
3422 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3423 * used for controlling the debug level.
3425 * See the level definitions in iwl for details.
3427 * The debug_level being managed using sysfs below is a per device debug
3428 * level that is used instead of the global debug level if it (the per
3429 * device debug level) is set.
3431 static ssize_t show_debug_level(struct device *d,
3432 struct device_attribute *attr, char *buf)
3434 struct iwl_priv *priv = dev_get_drvdata(d);
3435 return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
3437 static ssize_t store_debug_level(struct device *d,
3438 struct device_attribute *attr,
3439 const char *buf, size_t count)
3441 struct iwl_priv *priv = dev_get_drvdata(d);
3445 ret = strict_strtoul(buf, 0, &val);
3447 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
3449 priv->debug_level = val;
3450 if (iwl_alloc_traffic_mem(priv))
3452 "Not enough memory to generate traffic log\n");
3454 return strnlen(buf, count);
3457 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3458 show_debug_level, store_debug_level);
3460 #endif /* CONFIG_IWLWIFI_DEBUG */
3462 static ssize_t show_temperature(struct device *d,
3463 struct device_attribute *attr, char *buf)
3465 struct iwl_priv *priv = dev_get_drvdata(d);
3467 if (!iwl_is_alive(priv))
3470 return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
3473 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3475 static ssize_t show_tx_power(struct device *d,
3476 struct device_attribute *attr, char *buf)
3478 struct iwl_priv *priv = dev_get_drvdata(d);
3479 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3482 static ssize_t store_tx_power(struct device *d,
3483 struct device_attribute *attr,
3484 const char *buf, size_t count)
3486 struct iwl_priv *priv = dev_get_drvdata(d);
3487 char *p = (char *)buf;
3490 val = simple_strtoul(p, &p, 10);
3492 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
3494 iwl3945_hw_reg_set_txpower(priv, val);
3499 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3501 static ssize_t show_flags(struct device *d,
3502 struct device_attribute *attr, char *buf)
3504 struct iwl_priv *priv = dev_get_drvdata(d);
3506 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3509 static ssize_t store_flags(struct device *d,
3510 struct device_attribute *attr,
3511 const char *buf, size_t count)
3513 struct iwl_priv *priv = dev_get_drvdata(d);
3514 u32 flags = simple_strtoul(buf, NULL, 0);
3516 mutex_lock(&priv->mutex);
3517 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3518 /* Cancel any currently running scans... */
3519 if (iwl_scan_cancel_timeout(priv, 100))
3520 IWL_WARN(priv, "Could not cancel scan.\n");
3522 IWL_DEBUG_INFO(priv, "Committing rxon.flags = 0x%04X\n",
3524 priv->staging_rxon.flags = cpu_to_le32(flags);
3525 iwlcore_commit_rxon(priv);
3528 mutex_unlock(&priv->mutex);
3533 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3535 static ssize_t show_filter_flags(struct device *d,
3536 struct device_attribute *attr, char *buf)
3538 struct iwl_priv *priv = dev_get_drvdata(d);
3540 return sprintf(buf, "0x%04X\n",
3541 le32_to_cpu(priv->active_rxon.filter_flags));
3544 static ssize_t store_filter_flags(struct device *d,
3545 struct device_attribute *attr,
3546 const char *buf, size_t count)
3548 struct iwl_priv *priv = dev_get_drvdata(d);
3549 u32 filter_flags = simple_strtoul(buf, NULL, 0);
3551 mutex_lock(&priv->mutex);
3552 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3553 /* Cancel any currently running scans... */
3554 if (iwl_scan_cancel_timeout(priv, 100))
3555 IWL_WARN(priv, "Could not cancel scan.\n");
3557 IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
3558 "0x%04X\n", filter_flags);
3559 priv->staging_rxon.filter_flags =
3560 cpu_to_le32(filter_flags);
3561 iwlcore_commit_rxon(priv);
3564 mutex_unlock(&priv->mutex);
3569 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3570 store_filter_flags);
3572 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3574 static ssize_t show_measurement(struct device *d,
3575 struct device_attribute *attr, char *buf)
3577 struct iwl_priv *priv = dev_get_drvdata(d);
3578 struct iwl_spectrum_notification measure_report;
3579 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3580 u8 *data = (u8 *)&measure_report;
3581 unsigned long flags;
3583 spin_lock_irqsave(&priv->lock, flags);
3584 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3585 spin_unlock_irqrestore(&priv->lock, flags);
3588 memcpy(&measure_report, &priv->measure_report, size);
3589 priv->measurement_status = 0;
3590 spin_unlock_irqrestore(&priv->lock, flags);
3592 while (size && (PAGE_SIZE - len)) {
3593 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3594 PAGE_SIZE - len, 1);
3596 if (PAGE_SIZE - len)
3600 size -= min(size, 16U);
3606 static ssize_t store_measurement(struct device *d,
3607 struct device_attribute *attr,
3608 const char *buf, size_t count)
3610 struct iwl_priv *priv = dev_get_drvdata(d);
3611 struct ieee80211_measurement_params params = {
3612 .channel = le16_to_cpu(priv->active_rxon.channel),
3613 .start_time = cpu_to_le64(priv->last_tsf),
3614 .duration = cpu_to_le16(1),
3616 u8 type = IWL_MEASURE_BASIC;
3622 strncpy(buffer, buf, min(sizeof(buffer), count));
3623 channel = simple_strtoul(p, NULL, 0);
3625 params.channel = channel;
3628 while (*p && *p != ' ')
3631 type = simple_strtoul(p + 1, NULL, 0);
3634 IWL_DEBUG_INFO(priv, "Invoking measurement of type %d on "
3635 "channel %d (for '%s')\n", type, params.channel, buf);
3636 iwl3945_get_measurement(priv, ¶ms, type);
3641 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3642 show_measurement, store_measurement);
3643 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
3645 static ssize_t store_retry_rate(struct device *d,
3646 struct device_attribute *attr,
3647 const char *buf, size_t count)
3649 struct iwl_priv *priv = dev_get_drvdata(d);
3651 priv->retry_rate = simple_strtoul(buf, NULL, 0);
3652 if (priv->retry_rate <= 0)
3653 priv->retry_rate = 1;
3658 static ssize_t show_retry_rate(struct device *d,
3659 struct device_attribute *attr, char *buf)
3661 struct iwl_priv *priv = dev_get_drvdata(d);
3662 return sprintf(buf, "%d", priv->retry_rate);
3665 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3669 static ssize_t show_channels(struct device *d,
3670 struct device_attribute *attr, char *buf)
3672 /* all this shit doesn't belong into sysfs anyway */
3676 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3678 static ssize_t show_statistics(struct device *d,
3679 struct device_attribute *attr, char *buf)
3681 struct iwl_priv *priv = dev_get_drvdata(d);
3682 u32 size = sizeof(struct iwl3945_notif_statistics);
3683 u32 len = 0, ofs = 0;
3684 u8 *data = (u8 *)&priv->statistics_39;
3687 if (!iwl_is_alive(priv))
3690 mutex_lock(&priv->mutex);
3691 rc = iwl_send_statistics_request(priv, CMD_SYNC, false);
3692 mutex_unlock(&priv->mutex);
3696 "Error sending statistics request: 0x%08X\n", rc);
3700 while (size && (PAGE_SIZE - len)) {
3701 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3702 PAGE_SIZE - len, 1);
3704 if (PAGE_SIZE - len)
3708 size -= min(size, 16U);
3714 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3716 static ssize_t show_antenna(struct device *d,
3717 struct device_attribute *attr, char *buf)
3719 struct iwl_priv *priv = dev_get_drvdata(d);
3721 if (!iwl_is_alive(priv))
3724 return sprintf(buf, "%d\n", iwl3945_mod_params.antenna);
3727 static ssize_t store_antenna(struct device *d,
3728 struct device_attribute *attr,
3729 const char *buf, size_t count)
3731 struct iwl_priv *priv __maybe_unused = dev_get_drvdata(d);
3737 if (sscanf(buf, "%1i", &ant) != 1) {
3738 IWL_DEBUG_INFO(priv, "not in hex or decimal form.\n");
3742 if ((ant >= 0) && (ant <= 2)) {
3743 IWL_DEBUG_INFO(priv, "Setting antenna select to %d.\n", ant);
3744 iwl3945_mod_params.antenna = (enum iwl3945_antenna)ant;
3746 IWL_DEBUG_INFO(priv, "Bad antenna select value %d.\n", ant);
3752 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
3754 static ssize_t show_status(struct device *d,
3755 struct device_attribute *attr, char *buf)
3757 struct iwl_priv *priv = dev_get_drvdata(d);
3758 if (!iwl_is_alive(priv))
3760 return sprintf(buf, "0x%08x\n", (int)priv->status);
3763 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3765 static ssize_t dump_error_log(struct device *d,
3766 struct device_attribute *attr,
3767 const char *buf, size_t count)
3769 struct iwl_priv *priv = dev_get_drvdata(d);
3770 char *p = (char *)buf;
3773 iwl3945_dump_nic_error_log(priv);
3775 return strnlen(buf, count);
3778 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
3780 /*****************************************************************************
3782 * driver setup and tear down
3784 *****************************************************************************/
3786 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
3788 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3790 init_waitqueue_head(&priv->wait_command_queue);
3792 INIT_WORK(&priv->up, iwl3945_bg_up);
3793 INIT_WORK(&priv->restart, iwl3945_bg_restart);
3794 INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
3795 INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
3796 INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
3797 INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
3798 INIT_DELAYED_WORK(&priv->rfkill_poll, iwl3945_rfkill_poll);
3799 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
3800 INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
3801 INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
3802 INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
3804 iwl3945_hw_setup_deferred_work(priv);
3806 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3807 iwl3945_irq_tasklet, (unsigned long)priv);
3810 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
3812 iwl3945_hw_cancel_deferred_work(priv);
3814 cancel_delayed_work_sync(&priv->init_alive_start);
3815 cancel_delayed_work(&priv->scan_check);
3816 cancel_delayed_work(&priv->alive_start);
3817 cancel_work_sync(&priv->beacon_update);
3820 static struct attribute *iwl3945_sysfs_entries[] = {
3821 &dev_attr_antenna.attr,
3822 &dev_attr_channels.attr,
3823 &dev_attr_dump_errors.attr,
3824 &dev_attr_flags.attr,
3825 &dev_attr_filter_flags.attr,
3826 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3827 &dev_attr_measurement.attr,
3829 &dev_attr_retry_rate.attr,
3830 &dev_attr_statistics.attr,
3831 &dev_attr_status.attr,
3832 &dev_attr_temperature.attr,
3833 &dev_attr_tx_power.attr,
3834 #ifdef CONFIG_IWLWIFI_DEBUG
3835 &dev_attr_debug_level.attr,
3840 static struct attribute_group iwl3945_attribute_group = {
3841 .name = NULL, /* put in device directory */
3842 .attrs = iwl3945_sysfs_entries,
3845 static struct ieee80211_ops iwl3945_hw_ops = {
3846 .tx = iwl3945_mac_tx,
3847 .start = iwl3945_mac_start,
3848 .stop = iwl3945_mac_stop,
3849 .add_interface = iwl_mac_add_interface,
3850 .remove_interface = iwl_mac_remove_interface,
3851 .config = iwl_mac_config,
3852 .configure_filter = iwl_configure_filter,
3853 .set_key = iwl3945_mac_set_key,
3854 .get_tx_stats = iwl_mac_get_tx_stats,
3855 .conf_tx = iwl_mac_conf_tx,
3856 .reset_tsf = iwl_mac_reset_tsf,
3857 .bss_info_changed = iwl_bss_info_changed,
3858 .hw_scan = iwl_mac_hw_scan
3861 static int iwl3945_init_drv(struct iwl_priv *priv)
3864 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
3866 priv->retry_rate = 1;
3867 priv->ibss_beacon = NULL;
3869 spin_lock_init(&priv->sta_lock);
3870 spin_lock_init(&priv->hcmd_lock);
3872 INIT_LIST_HEAD(&priv->free_frames);
3874 mutex_init(&priv->mutex);
3876 /* Clear the driver's (not device's) station table */
3877 iwl_clear_stations_table(priv);
3879 priv->ieee_channels = NULL;
3880 priv->ieee_rates = NULL;
3881 priv->band = IEEE80211_BAND_2GHZ;
3883 priv->iw_mode = NL80211_IFTYPE_STATION;
3884 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
3886 iwl_reset_qos(priv);
3888 priv->qos_data.qos_active = 0;
3889 priv->qos_data.qos_cap.val = 0;
3891 priv->rates_mask = IWL_RATES_MASK;
3892 priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER;
3894 if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
3895 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
3900 ret = iwl_init_channel_map(priv);
3902 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3906 /* Set up txpower settings in driver for all channels */
3907 if (iwl3945_txpower_set_from_eeprom(priv)) {
3909 goto err_free_channel_map;
3912 ret = iwlcore_init_geos(priv);
3914 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3915 goto err_free_channel_map;
3917 iwl3945_init_hw_rates(priv, priv->ieee_rates);
3921 err_free_channel_map:
3922 iwl_free_channel_map(priv);
3927 static int iwl3945_setup_mac(struct iwl_priv *priv)
3930 struct ieee80211_hw *hw = priv->hw;
3932 hw->rate_control_algorithm = "iwl-3945-rs";
3933 hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
3935 /* Tell mac80211 our characteristics */
3936 hw->flags = IEEE80211_HW_SIGNAL_DBM |
3937 IEEE80211_HW_NOISE_DBM |
3938 IEEE80211_HW_SPECTRUM_MGMT;
3940 if (!priv->cfg->broken_powersave)
3941 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
3942 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
3944 hw->wiphy->interface_modes =
3945 BIT(NL80211_IFTYPE_STATION) |
3946 BIT(NL80211_IFTYPE_ADHOC);
3948 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY |
3949 WIPHY_FLAG_DISABLE_BEACON_HINTS;
3951 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX_3945;
3952 /* we create the 802.11 header and a zero-length SSID element */
3953 hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
3955 /* Default value; 4 EDCA QOS priorities */
3958 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
3959 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3960 &priv->bands[IEEE80211_BAND_2GHZ];
3962 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
3963 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
3964 &priv->bands[IEEE80211_BAND_5GHZ];
3966 ret = ieee80211_register_hw(priv->hw);
3968 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
3971 priv->mac80211_registered = 1;
3976 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3979 struct iwl_priv *priv;
3980 struct ieee80211_hw *hw;
3981 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3982 struct iwl3945_eeprom *eeprom;
3983 unsigned long flags;
3985 /***********************
3986 * 1. Allocating HW data
3987 * ********************/
3989 /* mac80211 allocates memory for this device instance, including
3990 * space for this driver's private structure */
3991 hw = iwl_alloc_all(cfg, &iwl3945_hw_ops);
3993 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
3998 SET_IEEE80211_DEV(hw, &pdev->dev);
4001 * Disabling hardware scan means that mac80211 will perform scans
4002 * "the hard way", rather than using device's scan.
4004 if (iwl3945_mod_params.disable_hw_scan) {
4005 IWL_DEBUG_INFO(priv, "Disabling hw_scan\n");
4006 iwl3945_hw_ops.hw_scan = NULL;
4010 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
4012 priv->pci_dev = pdev;
4013 priv->inta_mask = CSR_INI_SET_MASK;
4015 #ifdef CONFIG_IWLWIFI_DEBUG
4016 atomic_set(&priv->restrict_refcnt, 0);
4018 if (iwl_alloc_traffic_mem(priv))
4019 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
4021 /***************************
4022 * 2. Initializing PCI bus
4023 * *************************/
4024 if (pci_enable_device(pdev)) {
4026 goto out_ieee80211_free_hw;
4029 pci_set_master(pdev);
4031 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4033 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
4035 IWL_WARN(priv, "No suitable DMA available.\n");
4036 goto out_pci_disable_device;
4039 pci_set_drvdata(pdev, priv);
4040 err = pci_request_regions(pdev, DRV_NAME);
4042 goto out_pci_disable_device;
4044 /***********************
4045 * 3. Read REV Register
4046 * ********************/
4047 priv->hw_base = pci_iomap(pdev, 0, 0);
4048 if (!priv->hw_base) {
4050 goto out_pci_release_regions;
4053 IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
4054 (unsigned long long) pci_resource_len(pdev, 0));
4055 IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
4057 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4058 * PCI Tx retries from interfering with C3 CPU state */
4059 pci_write_config_byte(pdev, 0x41, 0x00);
4061 /* these spin locks will be used in apm_ops.init and EEPROM access
4062 * we should init now
4064 spin_lock_init(&priv->reg_lock);
4065 spin_lock_init(&priv->lock);
4067 /***********************
4069 * ********************/
4071 /* Read the EEPROM */
4072 err = iwl_eeprom_init(priv);
4074 IWL_ERR(priv, "Unable to init EEPROM\n");
4077 /* MAC Address location in EEPROM same for 3945/4965 */
4078 eeprom = (struct iwl3945_eeprom *)priv->eeprom;
4079 memcpy(priv->mac_addr, eeprom->mac_address, ETH_ALEN);
4080 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
4081 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4083 /***********************
4084 * 5. Setup HW Constants
4085 * ********************/
4086 /* Device-specific setup */
4087 if (iwl3945_hw_set_hw_params(priv)) {
4088 IWL_ERR(priv, "failed to set hw settings\n");
4089 goto out_eeprom_free;
4092 /***********************
4094 * ********************/
4096 err = iwl3945_init_drv(priv);
4098 IWL_ERR(priv, "initializing driver failed\n");
4099 goto out_unset_hw_params;
4102 IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
4105 /***********************
4107 * ********************/
4109 spin_lock_irqsave(&priv->lock, flags);
4110 iwl_disable_interrupts(priv);
4111 spin_unlock_irqrestore(&priv->lock, flags);
4113 pci_enable_msi(priv->pci_dev);
4115 err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr,
4116 IRQF_SHARED, DRV_NAME, priv);
4118 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
4119 goto out_disable_msi;
4122 err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4124 IWL_ERR(priv, "failed to create sysfs device attributes\n");
4125 goto out_release_irq;
4128 iwl_set_rxon_channel(priv,
4129 &priv->bands[IEEE80211_BAND_2GHZ].channels[5]);
4130 iwl3945_setup_deferred_work(priv);
4131 iwl3945_setup_rx_handlers(priv);
4132 iwl_power_initialize(priv);
4134 /*********************************
4135 * 8. Setup and Register mac80211
4136 * *******************************/
4138 iwl_enable_interrupts(priv);
4140 err = iwl3945_setup_mac(priv);
4142 goto out_remove_sysfs;
4144 err = iwl_dbgfs_register(priv, DRV_NAME);
4146 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
4148 /* Start monitoring the killswitch */
4149 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
4155 destroy_workqueue(priv->workqueue);
4156 priv->workqueue = NULL;
4157 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4159 free_irq(priv->pci_dev->irq, priv);
4161 pci_disable_msi(priv->pci_dev);
4162 iwlcore_free_geos(priv);
4163 iwl_free_channel_map(priv);
4164 out_unset_hw_params:
4165 iwl3945_unset_hw_params(priv);
4167 iwl_eeprom_free(priv);
4169 pci_iounmap(pdev, priv->hw_base);
4170 out_pci_release_regions:
4171 pci_release_regions(pdev);
4172 out_pci_disable_device:
4173 pci_set_drvdata(pdev, NULL);
4174 pci_disable_device(pdev);
4175 out_ieee80211_free_hw:
4176 iwl_free_traffic_mem(priv);
4177 ieee80211_free_hw(priv->hw);
4182 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
4184 struct iwl_priv *priv = pci_get_drvdata(pdev);
4185 unsigned long flags;
4190 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
4192 iwl_dbgfs_unregister(priv);
4194 set_bit(STATUS_EXIT_PENDING, &priv->status);
4196 if (priv->mac80211_registered) {
4197 ieee80211_unregister_hw(priv->hw);
4198 priv->mac80211_registered = 0;
4204 * Make sure device is reset to low power before unloading driver.
4205 * This may be redundant with iwl_down(), but there are paths to
4206 * run iwl_down() without calling apm_ops.stop(), and there are
4207 * paths to avoid running iwl_down() at all before leaving driver.
4208 * This (inexpensive) call *makes sure* device is reset.
4210 priv->cfg->ops->lib->apm_ops.stop(priv);
4212 /* make sure we flush any pending irq or
4213 * tasklet for the driver
4215 spin_lock_irqsave(&priv->lock, flags);
4216 iwl_disable_interrupts(priv);
4217 spin_unlock_irqrestore(&priv->lock, flags);
4219 iwl_synchronize_irq(priv);
4221 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4223 cancel_delayed_work_sync(&priv->rfkill_poll);
4225 iwl3945_dealloc_ucode_pci(priv);
4228 iwl3945_rx_queue_free(priv, &priv->rxq);
4229 iwl3945_hw_txq_ctx_free(priv);
4231 iwl3945_unset_hw_params(priv);
4232 iwl_clear_stations_table(priv);
4234 /*netif_stop_queue(dev); */
4235 flush_workqueue(priv->workqueue);
4237 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4238 * priv->workqueue... so we can't take down the workqueue
4240 destroy_workqueue(priv->workqueue);
4241 priv->workqueue = NULL;
4242 iwl_free_traffic_mem(priv);
4244 free_irq(pdev->irq, priv);
4245 pci_disable_msi(pdev);
4247 pci_iounmap(pdev, priv->hw_base);
4248 pci_release_regions(pdev);
4249 pci_disable_device(pdev);
4250 pci_set_drvdata(pdev, NULL);
4252 iwl_free_channel_map(priv);
4253 iwlcore_free_geos(priv);
4255 if (priv->ibss_beacon)
4256 dev_kfree_skb(priv->ibss_beacon);
4258 ieee80211_free_hw(priv->hw);
4262 /*****************************************************************************
4264 * driver and module entry point
4266 *****************************************************************************/
4268 static struct pci_driver iwl3945_driver = {
4270 .id_table = iwl3945_hw_card_ids,
4271 .probe = iwl3945_pci_probe,
4272 .remove = __devexit_p(iwl3945_pci_remove),
4274 .suspend = iwl_pci_suspend,
4275 .resume = iwl_pci_resume,
4279 static int __init iwl3945_init(void)
4283 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4284 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4286 ret = iwl3945_rate_control_register();
4288 printk(KERN_ERR DRV_NAME
4289 "Unable to register rate control algorithm: %d\n", ret);
4293 ret = pci_register_driver(&iwl3945_driver);
4295 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
4296 goto error_register;
4302 iwl3945_rate_control_unregister();
4306 static void __exit iwl3945_exit(void)
4308 pci_unregister_driver(&iwl3945_driver);
4309 iwl3945_rate_control_unregister();
4312 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
4314 module_param_named(antenna, iwl3945_mod_params.antenna, int, S_IRUGO);
4315 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
4316 module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, S_IRUGO);
4317 MODULE_PARM_DESC(swcrypto,
4318 "using software crypto (default 1 [software])\n");
4319 #ifdef CONFIG_IWLWIFI_DEBUG
4320 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
4321 MODULE_PARM_DESC(debug, "debug output mask");
4323 module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan,
4325 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
4326 module_param_named(fw_restart3945, iwl3945_mod_params.restart_fw, int, S_IRUGO);
4327 MODULE_PARM_DESC(fw_restart3945, "restart firmware in case of error");
4329 module_exit(iwl3945_exit);
4330 module_init(iwl3945_init);