1 /******************************************************************************
3 * Copyright(c) 2003 - 2009 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) 2003-2009 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 spin_lock_irqsave(&priv->lock, flags);
553 idx = get_cmd_index(q, q->write_ptr, 0);
555 /* Set up driver data for this TFD */
556 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
557 txq->txb[q->write_ptr].skb[0] = skb;
559 /* Init first empty entry in queue's array of Tx/cmd buffers */
560 out_cmd = txq->cmd[idx];
561 out_meta = &txq->meta[idx];
562 tx_cmd = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload;
563 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
564 memset(tx_cmd, 0, sizeof(*tx_cmd));
567 * Set up the Tx-command (not MAC!) header.
568 * Store the chosen Tx queue and TFD index within the sequence field;
569 * after Tx, uCode's Tx response will return this value so driver can
570 * locate the frame within the tx queue and do post-tx processing.
572 out_cmd->hdr.cmd = REPLY_TX;
573 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
574 INDEX_TO_SEQ(q->write_ptr)));
576 /* Copy MAC header from skb into command buffer */
577 memcpy(tx_cmd->hdr, hdr, hdr_len);
580 if (info->control.hw_key)
581 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, sta_id);
583 /* TODO need this for burst mode later on */
584 iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id);
586 /* set is_hcca to 0; it probably will never be implemented */
587 iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
589 /* Total # bytes to be transmitted */
591 tx_cmd->len = cpu_to_le16(len);
593 iwl_dbg_log_tx_data_frame(priv, len, hdr);
594 iwl_update_stats(priv, true, fc, len);
595 tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
596 tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
598 if (!ieee80211_has_morefrags(hdr->frame_control)) {
599 txq->need_update = 1;
601 priv->stations[sta_id].tid[tid].seq_number = seq_number;
604 txq->need_update = 0;
607 IWL_DEBUG_TX(priv, "sequence nr = 0X%x \n",
608 le16_to_cpu(out_cmd->hdr.sequence));
609 IWL_DEBUG_TX(priv, "tx_flags = 0X%x \n", le32_to_cpu(tx_cmd->tx_flags));
610 iwl_print_hex_dump(priv, IWL_DL_TX, tx_cmd, sizeof(*tx_cmd));
611 iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx_cmd->hdr,
612 ieee80211_hdrlen(fc));
615 * Use the first empty entry in this queue's command buffer array
616 * to contain the Tx command and MAC header concatenated together
617 * (payload data will be in another buffer).
618 * Size of this varies, due to varying MAC header length.
619 * If end is not dword aligned, we'll have 2 extra bytes at the end
620 * of the MAC header (device reads on dword boundaries).
621 * We'll tell device about this padding later.
623 len = sizeof(struct iwl3945_tx_cmd) +
624 sizeof(struct iwl_cmd_header) + hdr_len;
627 len = (len + 3) & ~3;
634 /* Physical address of this Tx command's header (not MAC header!),
635 * within command buffer array. */
636 txcmd_phys = pci_map_single(priv->pci_dev, &out_cmd->hdr,
637 len, PCI_DMA_TODEVICE);
638 /* we do not map meta data ... so we can safely access address to
639 * provide to unmap command*/
640 pci_unmap_addr_set(out_meta, mapping, txcmd_phys);
641 pci_unmap_len_set(out_meta, len, len);
643 /* Add buffer containing Tx command and MAC(!) header to TFD's
645 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
646 txcmd_phys, len, 1, 0);
649 /* Set up TFD's 2nd entry to point directly to remainder of skb,
650 * if any (802.11 null frames have no payload). */
651 len = skb->len - hdr_len;
653 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
654 len, PCI_DMA_TODEVICE);
655 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
661 /* Tell device the write index *just past* this latest filled TFD */
662 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
663 rc = iwl_txq_update_write_ptr(priv, txq);
664 spin_unlock_irqrestore(&priv->lock, flags);
669 if ((iwl_queue_space(q) < q->high_mark)
670 && priv->mac80211_registered) {
671 if (wait_write_ptr) {
672 spin_lock_irqsave(&priv->lock, flags);
673 txq->need_update = 1;
674 iwl_txq_update_write_ptr(priv, txq);
675 spin_unlock_irqrestore(&priv->lock, flags);
678 iwl_stop_queue(priv, skb_get_queue_mapping(skb));
684 spin_unlock_irqrestore(&priv->lock, flags);
689 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
691 #include "iwl-spectrum.h"
693 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
694 #define BEACON_TIME_MASK_HIGH 0xFF000000
695 #define TIME_UNIT 1024
698 * extended beacon time format
699 * time in usec will be changed into a 32-bit value in 8:24 format
700 * the high 1 byte is the beacon counts
701 * the lower 3 bytes is the time in usec within one beacon interval
704 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
708 u32 interval = beacon_interval * 1024;
710 if (!interval || !usec)
713 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
714 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
716 return (quot << 24) + rem;
719 /* base is usually what we get from ucode with each received frame,
720 * the same as HW timer counter counting down
723 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
725 u32 base_low = base & BEACON_TIME_MASK_LOW;
726 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
727 u32 interval = beacon_interval * TIME_UNIT;
728 u32 res = (base & BEACON_TIME_MASK_HIGH) +
729 (addon & BEACON_TIME_MASK_HIGH);
731 if (base_low > addon_low)
732 res += base_low - addon_low;
733 else if (base_low < addon_low) {
734 res += interval + base_low - addon_low;
739 return cpu_to_le32(res);
742 static int iwl3945_get_measurement(struct iwl_priv *priv,
743 struct ieee80211_measurement_params *params,
746 struct iwl_spectrum_cmd spectrum;
747 struct iwl_rx_packet *pkt;
748 struct iwl_host_cmd cmd = {
749 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
750 .data = (void *)&spectrum,
751 .flags = CMD_WANT_SKB,
753 u32 add_time = le64_to_cpu(params->start_time);
755 int spectrum_resp_status;
756 int duration = le16_to_cpu(params->duration);
758 if (iwl_is_associated(priv))
760 iwl3945_usecs_to_beacons(
761 le64_to_cpu(params->start_time) - priv->last_tsf,
762 le16_to_cpu(priv->rxon_timing.beacon_interval));
764 memset(&spectrum, 0, sizeof(spectrum));
766 spectrum.channel_count = cpu_to_le16(1);
768 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
769 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
770 cmd.len = sizeof(spectrum);
771 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
773 if (iwl_is_associated(priv))
774 spectrum.start_time =
775 iwl3945_add_beacon_time(priv->last_beacon_time,
777 le16_to_cpu(priv->rxon_timing.beacon_interval));
779 spectrum.start_time = 0;
781 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
782 spectrum.channels[0].channel = params->channel;
783 spectrum.channels[0].type = type;
784 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
785 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
786 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
788 rc = iwl_send_cmd_sync(priv, &cmd);
792 pkt = (struct iwl_rx_packet *)cmd.reply_page;
793 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
794 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
798 spectrum_resp_status = le16_to_cpu(pkt->u.spectrum.status);
799 switch (spectrum_resp_status) {
800 case 0: /* Command will be handled */
801 if (pkt->u.spectrum.id != 0xff) {
802 IWL_DEBUG_INFO(priv, "Replaced existing measurement: %d\n",
804 priv->measurement_status &= ~MEASUREMENT_READY;
806 priv->measurement_status |= MEASUREMENT_ACTIVE;
810 case 1: /* Command will not be handled */
815 free_pages(cmd.reply_page, priv->hw_params.rx_page_order);
821 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
822 struct iwl_rx_mem_buffer *rxb)
824 struct iwl_rx_packet *pkt = rxb_addr(rxb);
825 struct iwl_alive_resp *palive;
826 struct delayed_work *pwork;
828 palive = &pkt->u.alive_frame;
830 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
832 palive->is_valid, palive->ver_type,
833 palive->ver_subtype);
835 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
836 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
837 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
838 sizeof(struct iwl_alive_resp));
839 pwork = &priv->init_alive_start;
841 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
842 memcpy(&priv->card_alive, &pkt->u.alive_frame,
843 sizeof(struct iwl_alive_resp));
844 pwork = &priv->alive_start;
845 iwl3945_disable_events(priv);
848 /* We delay the ALIVE response by 5ms to
849 * give the HW RF Kill time to activate... */
850 if (palive->is_valid == UCODE_VALID_OK)
851 queue_delayed_work(priv->workqueue, pwork,
852 msecs_to_jiffies(5));
854 IWL_WARN(priv, "uCode did not respond OK.\n");
857 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
858 struct iwl_rx_mem_buffer *rxb)
860 #ifdef CONFIG_IWLWIFI_DEBUG
861 struct iwl_rx_packet *pkt = rxb_addr(rxb);
864 IWL_DEBUG_RX(priv, "Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
868 static void iwl3945_bg_beacon_update(struct work_struct *work)
870 struct iwl_priv *priv =
871 container_of(work, struct iwl_priv, beacon_update);
872 struct sk_buff *beacon;
874 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
875 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
878 IWL_ERR(priv, "update beacon failed\n");
882 mutex_lock(&priv->mutex);
883 /* new beacon skb is allocated every time; dispose previous.*/
884 if (priv->ibss_beacon)
885 dev_kfree_skb(priv->ibss_beacon);
887 priv->ibss_beacon = beacon;
888 mutex_unlock(&priv->mutex);
890 iwl3945_send_beacon_cmd(priv);
893 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
894 struct iwl_rx_mem_buffer *rxb)
896 #ifdef CONFIG_IWLWIFI_DEBUG
897 struct iwl_rx_packet *pkt = rxb_addr(rxb);
898 struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
899 u8 rate = beacon->beacon_notify_hdr.rate;
901 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
902 "tsf %d %d rate %d\n",
903 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
904 beacon->beacon_notify_hdr.failure_frame,
905 le32_to_cpu(beacon->ibss_mgr_status),
906 le32_to_cpu(beacon->high_tsf),
907 le32_to_cpu(beacon->low_tsf), rate);
910 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
911 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
912 queue_work(priv->workqueue, &priv->beacon_update);
915 /* Handle notification from uCode that card's power state is changing
916 * due to software, hardware, or critical temperature RFKILL */
917 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
918 struct iwl_rx_mem_buffer *rxb)
920 struct iwl_rx_packet *pkt = rxb_addr(rxb);
921 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
922 unsigned long status = priv->status;
924 IWL_WARN(priv, "Card state received: HW:%s SW:%s\n",
925 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
926 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
928 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
929 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
931 if (flags & HW_CARD_DISABLED)
932 set_bit(STATUS_RF_KILL_HW, &priv->status);
934 clear_bit(STATUS_RF_KILL_HW, &priv->status);
937 iwl_scan_cancel(priv);
939 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
940 test_bit(STATUS_RF_KILL_HW, &priv->status)))
941 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
942 test_bit(STATUS_RF_KILL_HW, &priv->status));
944 wake_up_interruptible(&priv->wait_command_queue);
948 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
950 * Setup the RX handlers for each of the reply types sent from the uCode
953 * This function chains into the hardware specific files for them to setup
954 * any hardware specific handlers as well.
956 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
958 priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
959 priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
960 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
961 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
962 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
963 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
964 iwl_rx_pm_debug_statistics_notif;
965 priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
968 * The same handler is used for both the REPLY to a discrete
969 * statistics request from the host as well as for the periodic
970 * statistics notifications (after received beacons) from the uCode.
972 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
973 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
975 iwl_setup_spectrum_handlers(priv);
976 iwl_setup_rx_scan_handlers(priv);
977 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
979 /* Set up hardware specific Rx handlers */
980 iwl3945_hw_rx_handler_setup(priv);
983 /************************** RX-FUNCTIONS ****************************/
985 * Rx theory of operation
987 * The host allocates 32 DMA target addresses and passes the host address
988 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
992 * The host/firmware share two index registers for managing the Rx buffers.
994 * The READ index maps to the first position that the firmware may be writing
995 * to -- the driver can read up to (but not including) this position and get
997 * The READ index is managed by the firmware once the card is enabled.
999 * The WRITE index maps to the last position the driver has read from -- the
1000 * position preceding WRITE is the last slot the firmware can place a packet.
1002 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
1005 * During initialization, the host sets up the READ queue position to the first
1006 * INDEX position, and WRITE to the last (READ - 1 wrapped)
1008 * When the firmware places a packet in a buffer, it will advance the READ index
1009 * and fire the RX interrupt. The driver can then query the READ index and
1010 * process as many packets as possible, moving the WRITE index forward as it
1011 * resets the Rx queue buffers with new memory.
1013 * The management in the driver is as follows:
1014 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
1015 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
1016 * to replenish the iwl->rxq->rx_free.
1017 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
1018 * iwl->rxq is replenished and the READ INDEX is updated (updating the
1019 * 'processed' and 'read' driver indexes as well)
1020 * + A received packet is processed and handed to the kernel network stack,
1021 * detached from the iwl->rxq. The driver 'processed' index is updated.
1022 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
1023 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
1024 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
1025 * were enough free buffers and RX_STALLED is set it is cleared.
1030 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
1031 * iwl3945_rx_queue_restock
1032 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
1033 * queue, updates firmware pointers, and updates
1034 * the WRITE index. If insufficient rx_free buffers
1035 * are available, schedules iwl3945_rx_replenish
1037 * -- enable interrupts --
1038 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
1039 * READ INDEX, detaching the SKB from the pool.
1040 * Moves the packet buffer from queue to rx_used.
1041 * Calls iwl3945_rx_queue_restock to refill any empty
1048 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
1050 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
1051 dma_addr_t dma_addr)
1053 return cpu_to_le32((u32)dma_addr);
1057 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
1059 * If there are slots in the RX queue that need to be restocked,
1060 * and we have free pre-allocated buffers, fill the ranks as much
1061 * as we can, pulling from rx_free.
1063 * This moves the 'write' index forward to catch up with 'processed', and
1064 * also updates the memory address in the firmware to reference the new
1067 static int iwl3945_rx_queue_restock(struct iwl_priv *priv)
1069 struct iwl_rx_queue *rxq = &priv->rxq;
1070 struct list_head *element;
1071 struct iwl_rx_mem_buffer *rxb;
1072 unsigned long flags;
1075 spin_lock_irqsave(&rxq->lock, flags);
1076 write = rxq->write & ~0x7;
1077 while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
1078 /* Get next free Rx buffer, remove from free list */
1079 element = rxq->rx_free.next;
1080 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1083 /* Point to Rx buffer via next RBD in circular buffer */
1084 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->page_dma);
1085 rxq->queue[rxq->write] = rxb;
1086 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
1089 spin_unlock_irqrestore(&rxq->lock, flags);
1090 /* If the pre-allocated buffer pool is dropping low, schedule to
1092 if (rxq->free_count <= RX_LOW_WATERMARK)
1093 queue_work(priv->workqueue, &priv->rx_replenish);
1096 /* If we've added more space for the firmware to place data, tell it.
1097 * Increment device's write pointer in multiples of 8. */
1098 if ((rxq->write_actual != (rxq->write & ~0x7))
1099 || (abs(rxq->write - rxq->read) > 7)) {
1100 spin_lock_irqsave(&rxq->lock, flags);
1101 rxq->need_update = 1;
1102 spin_unlock_irqrestore(&rxq->lock, flags);
1103 rc = iwl_rx_queue_update_write_ptr(priv, rxq);
1112 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1114 * When moving to rx_free an SKB is allocated for the slot.
1116 * Also restock the Rx queue via iwl3945_rx_queue_restock.
1117 * This is called as a scheduled work item (except for during initialization)
1119 static void iwl3945_rx_allocate(struct iwl_priv *priv, gfp_t priority)
1121 struct iwl_rx_queue *rxq = &priv->rxq;
1122 struct list_head *element;
1123 struct iwl_rx_mem_buffer *rxb;
1125 unsigned long flags;
1126 gfp_t gfp_mask = priority;
1129 spin_lock_irqsave(&rxq->lock, flags);
1131 if (list_empty(&rxq->rx_used)) {
1132 spin_unlock_irqrestore(&rxq->lock, flags);
1135 spin_unlock_irqrestore(&rxq->lock, flags);
1137 if (rxq->free_count > RX_LOW_WATERMARK)
1138 gfp_mask |= __GFP_NOWARN;
1140 if (priv->hw_params.rx_page_order > 0)
1141 gfp_mask |= __GFP_COMP;
1143 /* Alloc a new receive buffer */
1144 page = alloc_pages(gfp_mask, priv->hw_params.rx_page_order);
1146 if (net_ratelimit())
1147 IWL_DEBUG_INFO(priv, "Failed to allocate SKB buffer.\n");
1148 if ((rxq->free_count <= RX_LOW_WATERMARK) &&
1150 IWL_CRIT(priv, "Failed to allocate SKB buffer with %s. Only %u free buffers remaining.\n",
1151 priority == GFP_ATOMIC ? "GFP_ATOMIC" : "GFP_KERNEL",
1153 /* We don't reschedule replenish work here -- we will
1154 * call the restock method and if it still needs
1155 * more buffers it will schedule replenish */
1159 spin_lock_irqsave(&rxq->lock, flags);
1160 if (list_empty(&rxq->rx_used)) {
1161 spin_unlock_irqrestore(&rxq->lock, flags);
1162 __free_pages(page, priv->hw_params.rx_page_order);
1165 element = rxq->rx_used.next;
1166 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1168 spin_unlock_irqrestore(&rxq->lock, flags);
1171 /* Get physical address of RB/SKB */
1172 rxb->page_dma = pci_map_page(priv->pci_dev, page, 0,
1173 PAGE_SIZE << priv->hw_params.rx_page_order,
1174 PCI_DMA_FROMDEVICE);
1176 spin_lock_irqsave(&rxq->lock, flags);
1178 list_add_tail(&rxb->list, &rxq->rx_free);
1180 priv->alloc_rxb_page++;
1182 spin_unlock_irqrestore(&rxq->lock, flags);
1186 void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1188 unsigned long flags;
1190 spin_lock_irqsave(&rxq->lock, flags);
1191 INIT_LIST_HEAD(&rxq->rx_free);
1192 INIT_LIST_HEAD(&rxq->rx_used);
1193 /* Fill the rx_used queue with _all_ of the Rx buffers */
1194 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
1195 /* In the reset function, these buffers may have been allocated
1196 * to an SKB, so we need to unmap and free potential storage */
1197 if (rxq->pool[i].page != NULL) {
1198 pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
1199 PAGE_SIZE << priv->hw_params.rx_page_order,
1200 PCI_DMA_FROMDEVICE);
1201 priv->alloc_rxb_page--;
1202 __free_pages(rxq->pool[i].page,
1203 priv->hw_params.rx_page_order);
1204 rxq->pool[i].page = NULL;
1206 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
1209 /* Set us so that we have processed and used all buffers, but have
1210 * not restocked the Rx queue with fresh buffers */
1211 rxq->read = rxq->write = 0;
1212 rxq->write_actual = 0;
1213 rxq->free_count = 0;
1214 spin_unlock_irqrestore(&rxq->lock, flags);
1217 void iwl3945_rx_replenish(void *data)
1219 struct iwl_priv *priv = data;
1220 unsigned long flags;
1222 iwl3945_rx_allocate(priv, GFP_KERNEL);
1224 spin_lock_irqsave(&priv->lock, flags);
1225 iwl3945_rx_queue_restock(priv);
1226 spin_unlock_irqrestore(&priv->lock, flags);
1229 static void iwl3945_rx_replenish_now(struct iwl_priv *priv)
1231 iwl3945_rx_allocate(priv, GFP_ATOMIC);
1233 iwl3945_rx_queue_restock(priv);
1237 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1238 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1239 * This free routine walks the list of POOL entries and if SKB is set to
1240 * non NULL it is unmapped and freed
1242 static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1245 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
1246 if (rxq->pool[i].page != NULL) {
1247 pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
1248 PAGE_SIZE << priv->hw_params.rx_page_order,
1249 PCI_DMA_FROMDEVICE);
1250 __free_pages(rxq->pool[i].page,
1251 priv->hw_params.rx_page_order);
1252 rxq->pool[i].page = NULL;
1253 priv->alloc_rxb_page--;
1257 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
1259 pci_free_consistent(priv->pci_dev, sizeof(struct iwl_rb_status),
1260 rxq->rb_stts, rxq->rb_stts_dma);
1262 rxq->rb_stts = NULL;
1266 /* Convert linear signal-to-noise ratio into dB */
1267 static u8 ratio2dB[100] = {
1268 /* 0 1 2 3 4 5 6 7 8 9 */
1269 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1270 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1271 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1272 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1273 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1274 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1275 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1276 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1277 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1278 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1281 /* Calculates a relative dB value from a ratio of linear
1282 * (i.e. not dB) signal levels.
1283 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1284 int iwl3945_calc_db_from_ratio(int sig_ratio)
1286 /* 1000:1 or higher just report as 60 dB */
1287 if (sig_ratio >= 1000)
1290 /* 100:1 or higher, divide by 10 and use table,
1291 * add 20 dB to make up for divide by 10 */
1292 if (sig_ratio >= 100)
1293 return 20 + (int)ratio2dB[sig_ratio/10];
1295 /* We shouldn't see this */
1299 /* Use table for ratios 1:1 - 99:1 */
1300 return (int)ratio2dB[sig_ratio];
1303 #define PERFECT_RSSI (-20) /* dBm */
1304 #define WORST_RSSI (-95) /* dBm */
1305 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
1307 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
1308 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
1309 * about formulas used below. */
1310 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
1313 int degradation = PERFECT_RSSI - rssi_dbm;
1315 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
1316 * as indicator; formula is (signal dbm - noise dbm).
1317 * SNR at or above 40 is a great signal (100%).
1318 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
1319 * Weakest usable signal is usually 10 - 15 dB SNR. */
1321 if (rssi_dbm - noise_dbm >= 40)
1323 else if (rssi_dbm < noise_dbm)
1325 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
1327 /* Else use just the signal level.
1328 * This formula is a least squares fit of data points collected and
1329 * compared with a reference system that had a percentage (%) display
1330 * for signal quality. */
1332 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
1333 (15 * RSSI_RANGE + 62 * degradation)) /
1334 (RSSI_RANGE * RSSI_RANGE);
1338 else if (sig_qual < 1)
1345 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1347 * Uses the priv->rx_handlers callback function array to invoke
1348 * the appropriate handlers, including command responses,
1349 * frame-received notifications, and other notifications.
1351 static void iwl3945_rx_handle(struct iwl_priv *priv)
1353 struct iwl_rx_mem_buffer *rxb;
1354 struct iwl_rx_packet *pkt;
1355 struct iwl_rx_queue *rxq = &priv->rxq;
1358 unsigned long flags;
1361 int total_empty = 0;
1363 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1364 * buffer that the driver may process (last buffer filled by ucode). */
1365 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
1368 /* calculate total frames need to be restock after handling RX */
1369 total_empty = r - rxq->write_actual;
1370 if (total_empty < 0)
1371 total_empty += RX_QUEUE_SIZE;
1373 if (total_empty > (RX_QUEUE_SIZE / 2))
1375 /* Rx interrupt, but nothing sent from uCode */
1377 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
1380 rxb = rxq->queue[i];
1382 /* If an RXB doesn't have a Rx queue slot associated with it,
1383 * then a bug has been introduced in the queue refilling
1384 * routines -- catch it here */
1385 BUG_ON(rxb == NULL);
1387 rxq->queue[i] = NULL;
1389 pci_unmap_page(priv->pci_dev, rxb->page_dma,
1390 PAGE_SIZE << priv->hw_params.rx_page_order,
1391 PCI_DMA_FROMDEVICE);
1392 pkt = rxb_addr(rxb);
1394 trace_iwlwifi_dev_rx(priv, pkt,
1395 le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK);
1397 /* Reclaim a command buffer only if this packet is a response
1398 * to a (driver-originated) command.
1399 * If the packet (e.g. Rx frame) originated from uCode,
1400 * there is no command buffer to reclaim.
1401 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1402 * but apparently a few don't get set; catch them here. */
1403 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1404 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1405 (pkt->hdr.cmd != REPLY_TX);
1407 /* Based on type of command response or notification,
1408 * handle those that need handling via function in
1409 * rx_handlers table. See iwl3945_setup_rx_handlers() */
1410 if (priv->rx_handlers[pkt->hdr.cmd]) {
1411 IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r, i,
1412 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1413 priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
1414 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1416 /* No handling needed */
1418 "r %d i %d No handler needed for %s, 0x%02x\n",
1419 r, i, get_cmd_string(pkt->hdr.cmd),
1424 * XXX: After here, we should always check rxb->page
1425 * against NULL before touching it or its virtual
1426 * memory (pkt). Because some rx_handler might have
1427 * already taken or freed the pages.
1431 /* Invoke any callbacks, transfer the buffer to caller,
1432 * and fire off the (possibly) blocking iwl_send_cmd()
1433 * as we reclaim the driver command queue */
1435 iwl_tx_cmd_complete(priv, rxb);
1437 IWL_WARN(priv, "Claim null rxb?\n");
1440 /* Reuse the page if possible. For notification packets and
1441 * SKBs that fail to Rx correctly, add them back into the
1442 * rx_free list for reuse later. */
1443 spin_lock_irqsave(&rxq->lock, flags);
1444 if (rxb->page != NULL) {
1445 rxb->page_dma = pci_map_page(priv->pci_dev, rxb->page,
1446 0, PAGE_SIZE << priv->hw_params.rx_page_order,
1447 PCI_DMA_FROMDEVICE);
1448 list_add_tail(&rxb->list, &rxq->rx_free);
1451 list_add_tail(&rxb->list, &rxq->rx_used);
1453 spin_unlock_irqrestore(&rxq->lock, flags);
1455 i = (i + 1) & RX_QUEUE_MASK;
1456 /* If there are a lot of unused frames,
1457 * restock the Rx queue so ucode won't assert. */
1462 iwl3945_rx_replenish_now(priv);
1468 /* Backtrack one entry */
1471 iwl3945_rx_replenish_now(priv);
1473 iwl3945_rx_queue_restock(priv);
1476 /* call this function to flush any scheduled tasklet */
1477 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1479 /* wait to make sure we flush pending tasklet*/
1480 synchronize_irq(priv->pci_dev->irq);
1481 tasklet_kill(&priv->irq_tasklet);
1484 static const char *desc_lookup(int i)
1492 return "BAD_CHECKSUM";
1494 return "NMI_INTERRUPT";
1498 return "FATAL_ERROR";
1504 #define ERROR_START_OFFSET (1 * sizeof(u32))
1505 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1507 void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
1510 u32 desc, time, count, base, data1;
1511 u32 blink1, blink2, ilink1, ilink2;
1513 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1515 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1516 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1521 count = iwl_read_targ_mem(priv, base);
1523 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1524 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1525 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1526 priv->status, count);
1529 IWL_ERR(priv, "Desc Time asrtPC blink2 "
1530 "ilink1 nmiPC Line\n");
1531 for (i = ERROR_START_OFFSET;
1532 i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
1533 i += ERROR_ELEM_SIZE) {
1534 desc = iwl_read_targ_mem(priv, base + i);
1536 iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
1538 iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
1540 iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
1542 iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
1544 iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
1546 iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
1549 "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1550 desc_lookup(desc), desc, time, blink1, blink2,
1551 ilink1, ilink2, data1);
1552 trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, 0,
1553 0, blink1, blink2, ilink1, ilink2);
1557 #define EVENT_START_OFFSET (6 * sizeof(u32))
1560 * iwl3945_print_event_log - Dump error event log to syslog
1563 static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
1564 u32 num_events, u32 mode)
1567 u32 base; /* SRAM byte address of event log header */
1568 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1569 u32 ptr; /* SRAM byte address of log data */
1570 u32 ev, time, data; /* event log data */
1571 unsigned long reg_flags;
1573 if (num_events == 0)
1576 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1579 event_size = 2 * sizeof(u32);
1581 event_size = 3 * sizeof(u32);
1583 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1585 /* Make sure device is powered up for SRAM reads */
1586 spin_lock_irqsave(&priv->reg_lock, reg_flags);
1587 iwl_grab_nic_access(priv);
1589 /* Set starting address; reads will auto-increment */
1590 _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
1593 /* "time" is actually "data" for mode 0 (no timestamp).
1594 * place event id # at far right for easier visual parsing. */
1595 for (i = 0; i < num_events; i++) {
1596 ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1597 time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1600 IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
1601 trace_iwlwifi_dev_ucode_event(priv, 0, time, ev);
1603 data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1604 IWL_ERR(priv, "%010u\t0x%08x\t%04u\n", time, data, ev);
1605 trace_iwlwifi_dev_ucode_event(priv, time, data, ev);
1609 /* Allow device to power down */
1610 iwl_release_nic_access(priv);
1611 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
1615 * iwl3945_print_last_event_logs - Dump the newest # of event log to syslog
1617 static void iwl3945_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1618 u32 num_wraps, u32 next_entry,
1622 * display the newest DEFAULT_LOG_ENTRIES entries
1623 * i.e the entries just before the next ont that uCode would fill.
1626 if (next_entry < size) {
1627 iwl3945_print_event_log(priv,
1628 capacity - (size - next_entry),
1629 size - next_entry, mode);
1630 iwl3945_print_event_log(priv, 0,
1633 iwl3945_print_event_log(priv, next_entry - size,
1636 if (next_entry < size)
1637 iwl3945_print_event_log(priv, 0, next_entry, mode);
1639 iwl3945_print_event_log(priv, next_entry - size,
1644 /* For sanity check only. Actual size is determined by uCode, typ. 512 */
1645 #define IWL3945_MAX_EVENT_LOG_SIZE (512)
1647 #define DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES (20)
1649 void iwl3945_dump_nic_event_log(struct iwl_priv *priv, bool full_log)
1651 u32 base; /* SRAM byte address of event log header */
1652 u32 capacity; /* event log capacity in # entries */
1653 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1654 u32 num_wraps; /* # times uCode wrapped to top of log */
1655 u32 next_entry; /* index of next entry to be written by uCode */
1656 u32 size; /* # entries that we'll print */
1658 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1659 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1660 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1664 /* event log header */
1665 capacity = iwl_read_targ_mem(priv, base);
1666 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1667 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1668 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1670 if (capacity > IWL3945_MAX_EVENT_LOG_SIZE) {
1671 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
1672 capacity, IWL3945_MAX_EVENT_LOG_SIZE);
1673 capacity = IWL3945_MAX_EVENT_LOG_SIZE;
1676 if (next_entry > IWL3945_MAX_EVENT_LOG_SIZE) {
1677 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1678 next_entry, IWL3945_MAX_EVENT_LOG_SIZE);
1679 next_entry = IWL3945_MAX_EVENT_LOG_SIZE;
1682 size = num_wraps ? capacity : next_entry;
1684 /* bail out if nothing in log */
1686 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1690 #ifdef CONFIG_IWLWIFI_DEBUG
1691 if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS))
1692 size = (size > DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES)
1693 ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES : size;
1695 size = (size > DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES)
1696 ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES : size;
1699 IWL_ERR(priv, "Start IWL Event Log Dump: display last %d count\n",
1702 #ifdef CONFIG_IWLWIFI_DEBUG
1703 if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
1704 /* if uCode has wrapped back to top of log,
1705 * start at the oldest entry,
1706 * i.e the next one that uCode would fill.
1709 iwl3945_print_event_log(priv, next_entry,
1710 capacity - next_entry, mode);
1712 /* (then/else) start at top of log */
1713 iwl3945_print_event_log(priv, 0, next_entry, mode);
1715 iwl3945_print_last_event_logs(priv, capacity, num_wraps,
1716 next_entry, size, mode);
1718 iwl3945_print_last_event_logs(priv, capacity, num_wraps,
1719 next_entry, size, mode);
1724 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
1726 u32 inta, handled = 0;
1728 unsigned long flags;
1729 #ifdef CONFIG_IWLWIFI_DEBUG
1733 spin_lock_irqsave(&priv->lock, flags);
1735 /* Ack/clear/reset pending uCode interrupts.
1736 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1737 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1738 inta = iwl_read32(priv, CSR_INT);
1739 iwl_write32(priv, CSR_INT, inta);
1741 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1742 * Any new interrupts that happen after this, either while we're
1743 * in this tasklet, or later, will show up in next ISR/tasklet. */
1744 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1745 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1747 #ifdef CONFIG_IWLWIFI_DEBUG
1748 if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1749 /* just for debug */
1750 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1751 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1752 inta, inta_mask, inta_fh);
1756 spin_unlock_irqrestore(&priv->lock, flags);
1758 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1759 * atomic, make sure that inta covers all the interrupts that
1760 * we've discovered, even if FH interrupt came in just after
1761 * reading CSR_INT. */
1762 if (inta_fh & CSR39_FH_INT_RX_MASK)
1763 inta |= CSR_INT_BIT_FH_RX;
1764 if (inta_fh & CSR39_FH_INT_TX_MASK)
1765 inta |= CSR_INT_BIT_FH_TX;
1767 /* Now service all interrupt bits discovered above. */
1768 if (inta & CSR_INT_BIT_HW_ERR) {
1769 IWL_ERR(priv, "Hardware error detected. Restarting.\n");
1771 /* Tell the device to stop sending interrupts */
1772 iwl_disable_interrupts(priv);
1774 priv->isr_stats.hw++;
1775 iwl_irq_handle_error(priv);
1777 handled |= CSR_INT_BIT_HW_ERR;
1782 #ifdef CONFIG_IWLWIFI_DEBUG
1783 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1784 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1785 if (inta & CSR_INT_BIT_SCD) {
1786 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1787 "the frame/frames.\n");
1788 priv->isr_stats.sch++;
1791 /* Alive notification via Rx interrupt will do the real work */
1792 if (inta & CSR_INT_BIT_ALIVE) {
1793 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1794 priv->isr_stats.alive++;
1798 /* Safely ignore these bits for debug checks below */
1799 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1801 /* Error detected by uCode */
1802 if (inta & CSR_INT_BIT_SW_ERR) {
1803 IWL_ERR(priv, "Microcode SW error detected. "
1804 "Restarting 0x%X.\n", inta);
1805 priv->isr_stats.sw++;
1806 priv->isr_stats.sw_err = inta;
1807 iwl_irq_handle_error(priv);
1808 handled |= CSR_INT_BIT_SW_ERR;
1811 /* uCode wakes up after power-down sleep */
1812 if (inta & CSR_INT_BIT_WAKEUP) {
1813 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1814 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1815 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1816 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1817 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1818 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1819 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1820 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1822 priv->isr_stats.wakeup++;
1823 handled |= CSR_INT_BIT_WAKEUP;
1826 /* All uCode command responses, including Tx command responses,
1827 * Rx "responses" (frame-received notification), and other
1828 * notifications from uCode come through here*/
1829 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1830 iwl3945_rx_handle(priv);
1831 priv->isr_stats.rx++;
1832 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1835 if (inta & CSR_INT_BIT_FH_TX) {
1836 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1837 priv->isr_stats.tx++;
1839 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
1840 iwl_write_direct32(priv, FH39_TCSR_CREDIT
1841 (FH39_SRVC_CHNL), 0x0);
1842 handled |= CSR_INT_BIT_FH_TX;
1845 if (inta & ~handled) {
1846 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1847 priv->isr_stats.unhandled++;
1850 if (inta & ~priv->inta_mask) {
1851 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1852 inta & ~priv->inta_mask);
1853 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
1856 /* Re-enable all interrupts */
1857 /* only Re-enable if disabled by irq */
1858 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1859 iwl_enable_interrupts(priv);
1861 #ifdef CONFIG_IWLWIFI_DEBUG
1862 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1863 inta = iwl_read32(priv, CSR_INT);
1864 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1865 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1866 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1867 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1872 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
1873 enum ieee80211_band band,
1874 u8 is_active, u8 n_probes,
1875 struct iwl3945_scan_channel *scan_ch)
1877 struct ieee80211_channel *chan;
1878 const struct ieee80211_supported_band *sband;
1879 const struct iwl_channel_info *ch_info;
1880 u16 passive_dwell = 0;
1881 u16 active_dwell = 0;
1884 sband = iwl_get_hw_mode(priv, band);
1888 active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
1889 passive_dwell = iwl_get_passive_dwell_time(priv, band);
1891 if (passive_dwell <= active_dwell)
1892 passive_dwell = active_dwell + 1;
1894 for (i = 0, added = 0; i < priv->scan_request->n_channels; i++) {
1895 chan = priv->scan_request->channels[i];
1897 if (chan->band != band)
1900 scan_ch->channel = chan->hw_value;
1902 ch_info = iwl_get_channel_info(priv, band, scan_ch->channel);
1903 if (!is_channel_valid(ch_info)) {
1904 IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n",
1909 scan_ch->active_dwell = cpu_to_le16(active_dwell);
1910 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
1911 /* If passive , set up for auto-switch
1912 * and use long active_dwell time.
1914 if (!is_active || is_channel_passive(ch_info) ||
1915 (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
1916 scan_ch->type = 0; /* passive */
1917 if (IWL_UCODE_API(priv->ucode_ver) == 1)
1918 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
1920 scan_ch->type = 1; /* active */
1923 /* Set direct probe bits. These may be used both for active
1924 * scan channels (probes gets sent right away),
1925 * or for passive channels (probes get se sent only after
1926 * hearing clear Rx packet).*/
1927 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
1929 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1931 /* uCode v1 does not allow setting direct probe bits on
1932 * passive channel. */
1933 if ((scan_ch->type & 1) && n_probes)
1934 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1937 /* Set txpower levels to defaults */
1938 scan_ch->tpc.dsp_atten = 110;
1939 /* scan_pwr_info->tpc.dsp_atten; */
1941 /*scan_pwr_info->tpc.tx_gain; */
1942 if (band == IEEE80211_BAND_5GHZ)
1943 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
1945 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
1946 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
1948 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
1952 IWL_DEBUG_SCAN(priv, "Scanning %d [%s %d]\n",
1954 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
1955 (scan_ch->type & 1) ?
1956 active_dwell : passive_dwell);
1962 IWL_DEBUG_SCAN(priv, "total channels to scan %d \n", added);
1966 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
1967 struct ieee80211_rate *rates)
1971 for (i = 0; i < IWL_RATE_COUNT; i++) {
1972 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
1973 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1974 rates[i].hw_value_short = i;
1976 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
1978 * If CCK != 1M then set short preamble rate flag.
1980 rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
1981 0 : IEEE80211_RATE_SHORT_PREAMBLE;
1986 /******************************************************************************
1988 * uCode download functions
1990 ******************************************************************************/
1992 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
1994 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1995 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1996 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1997 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1998 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1999 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
2003 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
2004 * looking at all data.
2006 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
2013 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2015 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2016 IWL39_RTC_INST_LOWER_BOUND);
2019 for (; len > 0; len -= sizeof(u32), image++) {
2020 /* read data comes through single port, auto-incr addr */
2021 /* NOTE: Use the debugless read so we don't flood kernel log
2022 * if IWL_DL_IO is set */
2023 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2024 if (val != le32_to_cpu(*image)) {
2025 IWL_ERR(priv, "uCode INST section is invalid at "
2026 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2027 save_len - len, val, le32_to_cpu(*image));
2037 IWL_DEBUG_INFO(priv,
2038 "ucode image in INSTRUCTION memory is good\n");
2045 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
2046 * using sample data 100 bytes apart. If these sample points are good,
2047 * it's a pretty good bet that everything between them is good, too.
2049 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
2056 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2058 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
2059 /* read data comes through single port, auto-incr addr */
2060 /* NOTE: Use the debugless read so we don't flood kernel log
2061 * if IWL_DL_IO is set */
2062 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2063 i + IWL39_RTC_INST_LOWER_BOUND);
2064 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2065 if (val != le32_to_cpu(*image)) {
2066 #if 0 /* Enable this if you want to see details */
2067 IWL_ERR(priv, "uCode INST section is invalid at "
2068 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2083 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2084 * and verify its contents
2086 static int iwl3945_verify_ucode(struct iwl_priv *priv)
2093 image = (__le32 *)priv->ucode_boot.v_addr;
2094 len = priv->ucode_boot.len;
2095 rc = iwl3945_verify_inst_sparse(priv, image, len);
2097 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2101 /* Try initialize */
2102 image = (__le32 *)priv->ucode_init.v_addr;
2103 len = priv->ucode_init.len;
2104 rc = iwl3945_verify_inst_sparse(priv, image, len);
2106 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2110 /* Try runtime/protocol */
2111 image = (__le32 *)priv->ucode_code.v_addr;
2112 len = priv->ucode_code.len;
2113 rc = iwl3945_verify_inst_sparse(priv, image, len);
2115 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2119 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2121 /* Since nothing seems to match, show first several data entries in
2122 * instruction SRAM, so maybe visual inspection will give a clue.
2123 * Selection of bootstrap image (vs. other images) is arbitrary. */
2124 image = (__le32 *)priv->ucode_boot.v_addr;
2125 len = priv->ucode_boot.len;
2126 rc = iwl3945_verify_inst_full(priv, image, len);
2131 static void iwl3945_nic_start(struct iwl_priv *priv)
2133 /* Remove all resets to allow NIC to operate */
2134 iwl_write32(priv, CSR_RESET, 0);
2138 * iwl3945_read_ucode - Read uCode images from disk file.
2140 * Copy into buffers for card to fetch via bus-mastering
2142 static int iwl3945_read_ucode(struct iwl_priv *priv)
2144 const struct iwl_ucode_header *ucode;
2145 int ret = -EINVAL, index;
2146 const struct firmware *ucode_raw;
2147 /* firmware file name contains uCode/driver compatibility version */
2148 const char *name_pre = priv->cfg->fw_name_pre;
2149 const unsigned int api_max = priv->cfg->ucode_api_max;
2150 const unsigned int api_min = priv->cfg->ucode_api_min;
2154 u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
2156 /* Ask kernel firmware_class module to get the boot firmware off disk.
2157 * request_firmware() is synchronous, file is in memory on return. */
2158 for (index = api_max; index >= api_min; index--) {
2159 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
2160 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
2162 IWL_ERR(priv, "%s firmware file req failed: %d\n",
2169 if (index < api_max)
2170 IWL_ERR(priv, "Loaded firmware %s, "
2171 "which is deprecated. "
2172 " Please use API v%u instead.\n",
2174 IWL_DEBUG_INFO(priv, "Got firmware '%s' file "
2175 "(%zd bytes) from disk\n",
2176 buf, ucode_raw->size);
2184 /* Make sure that we got at least our header! */
2185 if (ucode_raw->size < priv->cfg->ops->ucode->get_header_size(1)) {
2186 IWL_ERR(priv, "File size way too small!\n");
2191 /* Data from ucode file: header followed by uCode images */
2192 ucode = (struct iwl_ucode_header *)ucode_raw->data;
2194 priv->ucode_ver = le32_to_cpu(ucode->ver);
2195 api_ver = IWL_UCODE_API(priv->ucode_ver);
2196 inst_size = priv->cfg->ops->ucode->get_inst_size(ucode, api_ver);
2197 data_size = priv->cfg->ops->ucode->get_data_size(ucode, api_ver);
2198 init_size = priv->cfg->ops->ucode->get_init_size(ucode, api_ver);
2200 priv->cfg->ops->ucode->get_init_data_size(ucode, api_ver);
2201 boot_size = priv->cfg->ops->ucode->get_boot_size(ucode, api_ver);
2202 src = priv->cfg->ops->ucode->get_data(ucode, api_ver);
2204 /* api_ver should match the api version forming part of the
2205 * firmware filename ... but we don't check for that and only rely
2206 * on the API version read from firmware header from here on forward */
2208 if (api_ver < api_min || api_ver > api_max) {
2209 IWL_ERR(priv, "Driver unable to support your firmware API. "
2210 "Driver supports v%u, firmware is v%u.\n",
2212 priv->ucode_ver = 0;
2216 if (api_ver != api_max)
2217 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
2218 "got %u. New firmware can be obtained "
2219 "from http://www.intellinuxwireless.org.\n",
2222 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
2223 IWL_UCODE_MAJOR(priv->ucode_ver),
2224 IWL_UCODE_MINOR(priv->ucode_ver),
2225 IWL_UCODE_API(priv->ucode_ver),
2226 IWL_UCODE_SERIAL(priv->ucode_ver));
2228 snprintf(priv->hw->wiphy->fw_version,
2229 sizeof(priv->hw->wiphy->fw_version),
2231 IWL_UCODE_MAJOR(priv->ucode_ver),
2232 IWL_UCODE_MINOR(priv->ucode_ver),
2233 IWL_UCODE_API(priv->ucode_ver),
2234 IWL_UCODE_SERIAL(priv->ucode_ver));
2236 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2238 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
2240 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
2242 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
2244 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
2246 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
2250 /* Verify size of file vs. image size info in file's header */
2251 if (ucode_raw->size != priv->cfg->ops->ucode->get_header_size(api_ver) +
2252 inst_size + data_size + init_size +
2253 init_data_size + boot_size) {
2255 IWL_DEBUG_INFO(priv,
2256 "uCode file size %zd does not match expected size\n",
2262 /* Verify that uCode images will fit in card's SRAM */
2263 if (inst_size > IWL39_MAX_INST_SIZE) {
2264 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
2270 if (data_size > IWL39_MAX_DATA_SIZE) {
2271 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
2276 if (init_size > IWL39_MAX_INST_SIZE) {
2277 IWL_DEBUG_INFO(priv,
2278 "uCode init instr len %d too large to fit in\n",
2283 if (init_data_size > IWL39_MAX_DATA_SIZE) {
2284 IWL_DEBUG_INFO(priv,
2285 "uCode init data len %d too large to fit in\n",
2290 if (boot_size > IWL39_MAX_BSM_SIZE) {
2291 IWL_DEBUG_INFO(priv,
2292 "uCode boot instr len %d too large to fit in\n",
2298 /* Allocate ucode buffers for card's bus-master loading ... */
2300 /* Runtime instructions and 2 copies of data:
2301 * 1) unmodified from disk
2302 * 2) backup cache for save/restore during power-downs */
2303 priv->ucode_code.len = inst_size;
2304 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2306 priv->ucode_data.len = data_size;
2307 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2309 priv->ucode_data_backup.len = data_size;
2310 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2312 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2313 !priv->ucode_data_backup.v_addr)
2316 /* Initialization instructions and data */
2317 if (init_size && init_data_size) {
2318 priv->ucode_init.len = init_size;
2319 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2321 priv->ucode_init_data.len = init_data_size;
2322 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2324 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2328 /* Bootstrap (instructions only, no data) */
2330 priv->ucode_boot.len = boot_size;
2331 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2333 if (!priv->ucode_boot.v_addr)
2337 /* Copy images into buffers for card's bus-master reads ... */
2339 /* Runtime instructions (first block of data in file) */
2341 IWL_DEBUG_INFO(priv,
2342 "Copying (but not loading) uCode instr len %zd\n", len);
2343 memcpy(priv->ucode_code.v_addr, src, len);
2346 IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2347 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2349 /* Runtime data (2nd block)
2350 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
2352 IWL_DEBUG_INFO(priv,
2353 "Copying (but not loading) uCode data len %zd\n", len);
2354 memcpy(priv->ucode_data.v_addr, src, len);
2355 memcpy(priv->ucode_data_backup.v_addr, src, len);
2358 /* Initialization instructions (3rd block) */
2361 IWL_DEBUG_INFO(priv,
2362 "Copying (but not loading) init instr len %zd\n", len);
2363 memcpy(priv->ucode_init.v_addr, src, len);
2367 /* Initialization data (4th block) */
2368 if (init_data_size) {
2369 len = init_data_size;
2370 IWL_DEBUG_INFO(priv,
2371 "Copying (but not loading) init data len %zd\n", len);
2372 memcpy(priv->ucode_init_data.v_addr, src, len);
2376 /* Bootstrap instructions (5th block) */
2378 IWL_DEBUG_INFO(priv,
2379 "Copying (but not loading) boot instr len %zd\n", len);
2380 memcpy(priv->ucode_boot.v_addr, src, len);
2382 /* We have our copies now, allow OS release its copies */
2383 release_firmware(ucode_raw);
2387 IWL_ERR(priv, "failed to allocate pci memory\n");
2389 iwl3945_dealloc_ucode_pci(priv);
2392 release_firmware(ucode_raw);
2400 * iwl3945_set_ucode_ptrs - Set uCode address location
2402 * Tell initialization uCode where to find runtime uCode.
2404 * BSM registers initially contain pointers to initialization uCode.
2405 * We need to replace them to load runtime uCode inst and data,
2406 * and to save runtime data when powering down.
2408 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
2413 /* bits 31:0 for 3945 */
2414 pinst = priv->ucode_code.p_addr;
2415 pdata = priv->ucode_data_backup.p_addr;
2417 /* Tell bootstrap uCode where to find image to load */
2418 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2419 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2420 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
2421 priv->ucode_data.len);
2423 /* Inst byte count must be last to set up, bit 31 signals uCode
2424 * that all new ptr/size info is in place */
2425 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
2426 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
2428 IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
2434 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2436 * Called after REPLY_ALIVE notification received from "initialize" uCode.
2438 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2440 static void iwl3945_init_alive_start(struct iwl_priv *priv)
2442 /* Check alive response for "valid" sign from uCode */
2443 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
2444 /* We had an error bringing up the hardware, so take it
2445 * all the way back down so we can try again */
2446 IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n");
2450 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2451 * This is a paranoid check, because we would not have gotten the
2452 * "initialize" alive if code weren't properly loaded. */
2453 if (iwl3945_verify_ucode(priv)) {
2454 /* Runtime instruction load was bad;
2455 * take it all the way back down so we can try again */
2456 IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
2460 /* Send pointers to protocol/runtime uCode image ... init code will
2461 * load and launch runtime uCode, which will send us another "Alive"
2463 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
2464 if (iwl3945_set_ucode_ptrs(priv)) {
2465 /* Runtime instruction load won't happen;
2466 * take it all the way back down so we can try again */
2467 IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
2473 queue_work(priv->workqueue, &priv->restart);
2477 * iwl3945_alive_start - called after REPLY_ALIVE notification received
2478 * from protocol/runtime uCode (initialization uCode's
2479 * Alive gets handled by iwl3945_init_alive_start()).
2481 static void iwl3945_alive_start(struct iwl_priv *priv)
2483 int thermal_spin = 0;
2486 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2488 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2489 /* We had an error bringing up the hardware, so take it
2490 * all the way back down so we can try again */
2491 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2495 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2496 * This is a paranoid check, because we would not have gotten the
2497 * "runtime" alive if code weren't properly loaded. */
2498 if (iwl3945_verify_ucode(priv)) {
2499 /* Runtime instruction load was bad;
2500 * take it all the way back down so we can try again */
2501 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2505 iwl_clear_stations_table(priv);
2507 rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
2508 IWL_DEBUG_INFO(priv, "RFKILL status: 0x%x\n", rfkill);
2511 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2512 /* if RFKILL is not on, then wait for thermal
2513 * sensor in adapter to kick in */
2514 while (iwl3945_hw_get_temperature(priv) == 0) {
2520 IWL_DEBUG_INFO(priv, "Thermal calibration took %dus\n",
2523 set_bit(STATUS_RF_KILL_HW, &priv->status);
2525 /* After the ALIVE response, we can send commands to 3945 uCode */
2526 set_bit(STATUS_ALIVE, &priv->status);
2528 if (iwl_is_rfkill(priv))
2531 ieee80211_wake_queues(priv->hw);
2533 priv->active_rate = priv->rates_mask;
2534 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2536 iwl_power_update_mode(priv, true);
2538 if (iwl_is_associated(priv)) {
2539 struct iwl3945_rxon_cmd *active_rxon =
2540 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
2542 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2543 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2545 /* Initialize our rx_config data */
2546 iwl_connection_init_rx_config(priv, priv->iw_mode);
2549 /* Configure Bluetooth device coexistence support */
2550 iwl_send_bt_config(priv);
2552 /* Configure the adapter for unassociated operation */
2553 iwlcore_commit_rxon(priv);
2555 iwl3945_reg_txpower_periodic(priv);
2557 iwl_leds_init(priv);
2559 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2560 set_bit(STATUS_READY, &priv->status);
2561 wake_up_interruptible(&priv->wait_command_queue);
2563 /* reassociate for ADHOC mode */
2564 if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
2565 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
2568 iwl_mac_beacon_update(priv->hw, beacon);
2571 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2572 iwl_set_mode(priv, priv->iw_mode);
2577 queue_work(priv->workqueue, &priv->restart);
2580 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
2582 static void __iwl3945_down(struct iwl_priv *priv)
2584 unsigned long flags;
2585 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2586 struct ieee80211_conf *conf = NULL;
2588 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2590 conf = ieee80211_get_hw_conf(priv->hw);
2593 set_bit(STATUS_EXIT_PENDING, &priv->status);
2595 iwl_clear_stations_table(priv);
2597 /* Unblock any waiting calls */
2598 wake_up_interruptible_all(&priv->wait_command_queue);
2600 /* Wipe out the EXIT_PENDING status bit if we are not actually
2601 * exiting the module */
2603 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2605 /* stop and reset the on-board processor */
2606 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2608 /* tell the device to stop sending interrupts */
2609 spin_lock_irqsave(&priv->lock, flags);
2610 iwl_disable_interrupts(priv);
2611 spin_unlock_irqrestore(&priv->lock, flags);
2612 iwl_synchronize_irq(priv);
2614 if (priv->mac80211_registered)
2615 ieee80211_stop_queues(priv->hw);
2617 /* If we have not previously called iwl3945_init() then
2618 * clear all bits but the RF Kill bits and return */
2619 if (!iwl_is_init(priv)) {
2620 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2622 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2623 STATUS_GEO_CONFIGURED |
2624 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2625 STATUS_EXIT_PENDING;
2629 /* ...otherwise clear out all the status bits but the RF Kill
2630 * bit and continue taking the NIC down. */
2631 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2633 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2634 STATUS_GEO_CONFIGURED |
2635 test_bit(STATUS_FW_ERROR, &priv->status) <<
2637 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2638 STATUS_EXIT_PENDING;
2640 iwl3945_hw_txq_ctx_stop(priv);
2641 iwl3945_hw_rxq_stop(priv);
2643 /* Power-down device's busmaster DMA clocks */
2644 iwl_write_prph(priv, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT);
2647 /* Stop the device, and put it in low power state */
2648 priv->cfg->ops->lib->apm_ops.stop(priv);
2651 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2653 if (priv->ibss_beacon)
2654 dev_kfree_skb(priv->ibss_beacon);
2655 priv->ibss_beacon = NULL;
2657 /* clear out any free frames */
2658 iwl3945_clear_free_frames(priv);
2661 static void iwl3945_down(struct iwl_priv *priv)
2663 mutex_lock(&priv->mutex);
2664 __iwl3945_down(priv);
2665 mutex_unlock(&priv->mutex);
2667 iwl3945_cancel_deferred_work(priv);
2670 #define MAX_HW_RESTARTS 5
2672 static int __iwl3945_up(struct iwl_priv *priv)
2676 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2677 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2681 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2682 IWL_ERR(priv, "ucode not available for device bring up\n");
2686 /* If platform's RF_KILL switch is NOT set to KILL */
2687 if (iwl_read32(priv, CSR_GP_CNTRL) &
2688 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2689 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2691 set_bit(STATUS_RF_KILL_HW, &priv->status);
2692 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2696 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2698 rc = iwl3945_hw_nic_init(priv);
2700 IWL_ERR(priv, "Unable to int nic\n");
2704 /* make sure rfkill handshake bits are cleared */
2705 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2706 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2707 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2709 /* clear (again), then enable host interrupts */
2710 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2711 iwl_enable_interrupts(priv);
2713 /* really make sure rfkill handshake bits are cleared */
2714 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2715 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2717 /* Copy original ucode data image from disk into backup cache.
2718 * This will be used to initialize the on-board processor's
2719 * data SRAM for a clean start when the runtime program first loads. */
2720 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2721 priv->ucode_data.len);
2723 /* We return success when we resume from suspend and rf_kill is on. */
2724 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
2727 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2729 iwl_clear_stations_table(priv);
2731 /* load bootstrap state machine,
2732 * load bootstrap program into processor's memory,
2733 * prepare to load the "initialize" uCode */
2734 priv->cfg->ops->lib->load_ucode(priv);
2738 "Unable to set up bootstrap uCode: %d\n", rc);
2742 /* start card; "initialize" will load runtime ucode */
2743 iwl3945_nic_start(priv);
2745 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2750 set_bit(STATUS_EXIT_PENDING, &priv->status);
2751 __iwl3945_down(priv);
2752 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2754 /* tried to restart and config the device for as long as our
2755 * patience could withstand */
2756 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2761 /*****************************************************************************
2763 * Workqueue callbacks
2765 *****************************************************************************/
2767 static void iwl3945_bg_init_alive_start(struct work_struct *data)
2769 struct iwl_priv *priv =
2770 container_of(data, struct iwl_priv, init_alive_start.work);
2772 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2775 mutex_lock(&priv->mutex);
2776 iwl3945_init_alive_start(priv);
2777 mutex_unlock(&priv->mutex);
2780 static void iwl3945_bg_alive_start(struct work_struct *data)
2782 struct iwl_priv *priv =
2783 container_of(data, struct iwl_priv, alive_start.work);
2785 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2788 mutex_lock(&priv->mutex);
2789 iwl3945_alive_start(priv);
2790 mutex_unlock(&priv->mutex);
2794 * 3945 cannot interrupt driver when hardware rf kill switch toggles;
2795 * driver must poll CSR_GP_CNTRL_REG register for change. This register
2796 * *is* readable even when device has been SW_RESET into low power mode
2797 * (e.g. during RF KILL).
2799 static void iwl3945_rfkill_poll(struct work_struct *data)
2801 struct iwl_priv *priv =
2802 container_of(data, struct iwl_priv, rfkill_poll.work);
2803 bool old_rfkill = test_bit(STATUS_RF_KILL_HW, &priv->status);
2804 bool new_rfkill = !(iwl_read32(priv, CSR_GP_CNTRL)
2805 & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW);
2807 if (new_rfkill != old_rfkill) {
2809 set_bit(STATUS_RF_KILL_HW, &priv->status);
2811 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2813 wiphy_rfkill_set_hw_state(priv->hw->wiphy, new_rfkill);
2815 IWL_DEBUG_RF_KILL(priv, "RF_KILL bit toggled to %s.\n",
2816 new_rfkill ? "disable radio" : "enable radio");
2819 /* Keep this running, even if radio now enabled. This will be
2820 * cancelled in mac_start() if system decides to start again */
2821 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
2822 round_jiffies_relative(2 * HZ));
2826 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
2827 static void iwl3945_bg_request_scan(struct work_struct *data)
2829 struct iwl_priv *priv =
2830 container_of(data, struct iwl_priv, request_scan);
2831 struct iwl_host_cmd cmd = {
2832 .id = REPLY_SCAN_CMD,
2833 .len = sizeof(struct iwl3945_scan_cmd),
2834 .flags = CMD_SIZE_HUGE,
2837 struct iwl3945_scan_cmd *scan;
2838 struct ieee80211_conf *conf = NULL;
2840 enum ieee80211_band band;
2841 bool is_active = false;
2843 conf = ieee80211_get_hw_conf(priv->hw);
2845 mutex_lock(&priv->mutex);
2847 cancel_delayed_work(&priv->scan_check);
2849 if (!iwl_is_ready(priv)) {
2850 IWL_WARN(priv, "request scan called when driver not ready.\n");
2854 /* Make sure the scan wasn't canceled before this queued work
2855 * was given the chance to run... */
2856 if (!test_bit(STATUS_SCANNING, &priv->status))
2859 /* This should never be called or scheduled if there is currently
2860 * a scan active in the hardware. */
2861 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
2862 IWL_DEBUG_INFO(priv, "Multiple concurrent scan requests "
2863 "Ignoring second request.\n");
2868 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2869 IWL_DEBUG_SCAN(priv, "Aborting scan due to device shutdown\n");
2873 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2875 "Scan request while abort pending. Queuing.\n");
2879 if (iwl_is_rfkill(priv)) {
2880 IWL_DEBUG_HC(priv, "Aborting scan due to RF Kill activation\n");
2884 if (!test_bit(STATUS_READY, &priv->status)) {
2886 "Scan request while uninitialized. Queuing.\n");
2890 if (!priv->scan_bands) {
2891 IWL_DEBUG_HC(priv, "Aborting scan due to no requested bands\n");
2896 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
2897 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
2904 memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
2906 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
2907 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
2909 if (iwl_is_associated(priv)) {
2912 u32 suspend_time = 100;
2913 u32 scan_suspend_time = 100;
2914 unsigned long flags;
2916 IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
2918 spin_lock_irqsave(&priv->lock, flags);
2919 interval = priv->beacon_int;
2920 spin_unlock_irqrestore(&priv->lock, flags);
2922 scan->suspend_time = 0;
2923 scan->max_out_time = cpu_to_le32(200 * 1024);
2925 interval = suspend_time;
2927 * suspend time format:
2928 * 0-19: beacon interval in usec (time before exec.)
2930 * 24-31: number of beacons (suspend between channels)
2933 extra = (suspend_time / interval) << 24;
2934 scan_suspend_time = 0xFF0FFFFF &
2935 (extra | ((suspend_time % interval) * 1024));
2937 scan->suspend_time = cpu_to_le32(scan_suspend_time);
2938 IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
2939 scan_suspend_time, interval);
2942 if (priv->scan_request->n_ssids) {
2944 IWL_DEBUG_SCAN(priv, "Kicking off active scan\n");
2945 for (i = 0; i < priv->scan_request->n_ssids; i++) {
2946 /* always does wildcard anyway */
2947 if (!priv->scan_request->ssids[i].ssid_len)
2949 scan->direct_scan[p].id = WLAN_EID_SSID;
2950 scan->direct_scan[p].len =
2951 priv->scan_request->ssids[i].ssid_len;
2952 memcpy(scan->direct_scan[p].ssid,
2953 priv->scan_request->ssids[i].ssid,
2954 priv->scan_request->ssids[i].ssid_len);
2960 IWL_DEBUG_SCAN(priv, "Kicking off passive scan.\n");
2962 /* We don't build a direct scan probe request; the uCode will do
2963 * that based on the direct_mask added to each channel entry */
2964 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
2965 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
2966 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2968 /* flags + rate selection */
2970 if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
2971 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
2972 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
2973 scan->good_CRC_th = 0;
2974 band = IEEE80211_BAND_2GHZ;
2975 } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
2976 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
2978 * If active scaning is requested but a certain channel
2979 * is marked passive, we can do active scanning if we
2980 * detect transmissions.
2982 scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH : 0;
2983 band = IEEE80211_BAND_5GHZ;
2985 IWL_WARN(priv, "Invalid scan band count\n");
2989 scan->tx_cmd.len = cpu_to_le16(
2990 iwl_fill_probe_req(priv,
2991 (struct ieee80211_mgmt *)scan->data,
2992 priv->scan_request->ie,
2993 priv->scan_request->ie_len,
2994 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
2996 /* select Rx antennas */
2997 scan->flags |= iwl3945_get_antenna_flags(priv);
2999 if (iwl_is_monitor_mode(priv))
3000 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
3002 scan->channel_count =
3003 iwl3945_get_channels_for_scan(priv, band, is_active, n_probes,
3004 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3006 if (scan->channel_count == 0) {
3007 IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
3011 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
3012 scan->channel_count * sizeof(struct iwl3945_scan_channel);
3014 scan->len = cpu_to_le16(cmd.len);
3016 set_bit(STATUS_SCAN_HW, &priv->status);
3017 rc = iwl_send_cmd_sync(priv, &cmd);
3021 queue_delayed_work(priv->workqueue, &priv->scan_check,
3022 IWL_SCAN_CHECK_WATCHDOG);
3024 mutex_unlock(&priv->mutex);
3028 /* can not perform scan make sure we clear scanning
3029 * bits from status so next scan request can be performed.
3030 * if we dont clear scanning status bit here all next scan
3033 clear_bit(STATUS_SCAN_HW, &priv->status);
3034 clear_bit(STATUS_SCANNING, &priv->status);
3036 /* inform mac80211 scan aborted */
3037 queue_work(priv->workqueue, &priv->scan_completed);
3038 mutex_unlock(&priv->mutex);
3041 static void iwl3945_bg_up(struct work_struct *data)
3043 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
3045 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3048 mutex_lock(&priv->mutex);
3050 mutex_unlock(&priv->mutex);
3053 static void iwl3945_bg_restart(struct work_struct *data)
3055 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3057 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3060 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
3061 mutex_lock(&priv->mutex);
3064 mutex_unlock(&priv->mutex);
3066 ieee80211_restart_hw(priv->hw);
3069 queue_work(priv->workqueue, &priv->up);
3073 static void iwl3945_bg_rx_replenish(struct work_struct *data)
3075 struct iwl_priv *priv =
3076 container_of(data, struct iwl_priv, rx_replenish);
3078 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3081 mutex_lock(&priv->mutex);
3082 iwl3945_rx_replenish(priv);
3083 mutex_unlock(&priv->mutex);
3086 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3088 void iwl3945_post_associate(struct iwl_priv *priv)
3091 struct ieee80211_conf *conf = NULL;
3093 if (priv->iw_mode == NL80211_IFTYPE_AP) {
3094 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
3099 IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3100 priv->assoc_id, priv->active_rxon.bssid_addr);
3102 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3105 if (!priv->vif || !priv->is_open)
3108 iwl_scan_cancel_timeout(priv, 200);
3110 conf = ieee80211_get_hw_conf(priv->hw);
3112 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3113 iwlcore_commit_rxon(priv);
3115 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3116 iwl_setup_rxon_timing(priv);
3117 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3118 sizeof(priv->rxon_timing), &priv->rxon_timing);
3120 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3121 "Attempting to continue.\n");
3123 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3125 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3127 IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3128 priv->assoc_id, priv->beacon_int);
3130 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3131 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3133 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3135 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3136 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3137 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3139 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3141 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3142 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3146 iwlcore_commit_rxon(priv);
3148 switch (priv->iw_mode) {
3149 case NL80211_IFTYPE_STATION:
3150 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
3153 case NL80211_IFTYPE_ADHOC:
3156 iwl_add_station(priv, priv->bssid, 0, CMD_SYNC, NULL);
3157 iwl3945_sync_sta(priv, IWL_STA_ID,
3158 (priv->band == IEEE80211_BAND_5GHZ) ?
3159 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
3161 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
3162 iwl3945_send_beacon_cmd(priv);
3167 IWL_ERR(priv, "%s Should not be called in %d mode\n",
3168 __func__, priv->iw_mode);
3172 iwl_activate_qos(priv, 0);
3174 /* we have just associated, don't start scan too early */
3175 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
3178 /*****************************************************************************
3180 * mac80211 entry point functions
3182 *****************************************************************************/
3184 #define UCODE_READY_TIMEOUT (2 * HZ)
3186 static int iwl3945_mac_start(struct ieee80211_hw *hw)
3188 struct iwl_priv *priv = hw->priv;
3191 IWL_DEBUG_MAC80211(priv, "enter\n");
3193 /* we should be verifying the device is ready to be opened */
3194 mutex_lock(&priv->mutex);
3196 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3197 * ucode filename and max sizes are card-specific. */
3199 if (!priv->ucode_code.len) {
3200 ret = iwl3945_read_ucode(priv);
3202 IWL_ERR(priv, "Could not read microcode: %d\n", ret);
3203 mutex_unlock(&priv->mutex);
3204 goto out_release_irq;
3208 ret = __iwl3945_up(priv);
3210 mutex_unlock(&priv->mutex);
3213 goto out_release_irq;
3215 IWL_DEBUG_INFO(priv, "Start UP work.\n");
3217 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3218 * mac80211 will not be run successfully. */
3219 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3220 test_bit(STATUS_READY, &priv->status),
3221 UCODE_READY_TIMEOUT);
3223 if (!test_bit(STATUS_READY, &priv->status)) {
3225 "Wait for START_ALIVE timeout after %dms.\n",
3226 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3228 goto out_release_irq;
3232 /* ucode is running and will send rfkill notifications,
3233 * no need to poll the killswitch state anymore */
3234 cancel_delayed_work(&priv->rfkill_poll);
3236 iwl_led_start(priv);
3239 IWL_DEBUG_MAC80211(priv, "leave\n");
3244 IWL_DEBUG_MAC80211(priv, "leave - failed\n");
3248 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
3250 struct iwl_priv *priv = hw->priv;
3252 IWL_DEBUG_MAC80211(priv, "enter\n");
3254 if (!priv->is_open) {
3255 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
3261 if (iwl_is_ready_rf(priv)) {
3262 /* stop mac, cancel any scan request and clear
3263 * RXON_FILTER_ASSOC_MSK BIT
3265 mutex_lock(&priv->mutex);
3266 iwl_scan_cancel_timeout(priv, 100);
3267 mutex_unlock(&priv->mutex);
3272 flush_workqueue(priv->workqueue);
3274 /* start polling the killswitch state again */
3275 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
3276 round_jiffies_relative(2 * HZ));
3278 IWL_DEBUG_MAC80211(priv, "leave\n");
3281 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3283 struct iwl_priv *priv = hw->priv;
3285 IWL_DEBUG_MAC80211(priv, "enter\n");
3287 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3288 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3290 if (iwl3945_tx_skb(priv, skb))
3291 dev_kfree_skb_any(skb);
3293 IWL_DEBUG_MAC80211(priv, "leave\n");
3294 return NETDEV_TX_OK;
3297 void iwl3945_config_ap(struct iwl_priv *priv)
3301 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3304 /* The following should be done only at AP bring up */
3305 if (!(iwl_is_associated(priv))) {
3307 /* RXON - unassoc (to set timing command) */
3308 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3309 iwlcore_commit_rxon(priv);
3312 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3313 iwl_setup_rxon_timing(priv);
3314 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3315 sizeof(priv->rxon_timing),
3316 &priv->rxon_timing);
3318 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3319 "Attempting to continue.\n");
3321 /* FIXME: what should be the assoc_id for AP? */
3322 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3323 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3324 priv->staging_rxon.flags |=
3325 RXON_FLG_SHORT_PREAMBLE_MSK;
3327 priv->staging_rxon.flags &=
3328 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3330 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3331 if (priv->assoc_capability &
3332 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3333 priv->staging_rxon.flags |=
3334 RXON_FLG_SHORT_SLOT_MSK;
3336 priv->staging_rxon.flags &=
3337 ~RXON_FLG_SHORT_SLOT_MSK;
3339 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3340 priv->staging_rxon.flags &=
3341 ~RXON_FLG_SHORT_SLOT_MSK;
3343 /* restore RXON assoc */
3344 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3345 iwlcore_commit_rxon(priv);
3346 iwl_add_station(priv, iwl_bcast_addr, 0, CMD_SYNC, NULL);
3348 iwl3945_send_beacon_cmd(priv);
3350 /* FIXME - we need to add code here to detect a totally new
3351 * configuration, reset the AP, unassoc, rxon timing, assoc,
3352 * clear sta table, add BCAST sta... */
3355 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3356 struct ieee80211_vif *vif,
3357 struct ieee80211_sta *sta,
3358 struct ieee80211_key_conf *key)
3360 struct iwl_priv *priv = hw->priv;
3363 u8 sta_id = IWL_INVALID_STATION;
3366 IWL_DEBUG_MAC80211(priv, "enter\n");
3368 if (iwl3945_mod_params.sw_crypto) {
3369 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
3373 addr = sta ? sta->addr : iwl_bcast_addr;
3374 static_key = !iwl_is_associated(priv);
3377 sta_id = iwl_find_station(priv, addr);
3378 if (sta_id == IWL_INVALID_STATION) {
3379 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
3385 mutex_lock(&priv->mutex);
3386 iwl_scan_cancel_timeout(priv, 100);
3387 mutex_unlock(&priv->mutex);
3392 ret = iwl3945_set_static_key(priv, key);
3394 ret = iwl3945_set_dynamic_key(priv, key, sta_id);
3395 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
3399 ret = iwl3945_remove_static_key(priv);
3401 ret = iwl3945_clear_sta_key_info(priv, sta_id);
3402 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
3408 IWL_DEBUG_MAC80211(priv, "leave\n");
3413 /*****************************************************************************
3417 *****************************************************************************/
3419 #ifdef CONFIG_IWLWIFI_DEBUG
3422 * The following adds a new attribute to the sysfs representation
3423 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3424 * used for controlling the debug level.
3426 * See the level definitions in iwl for details.
3428 * The debug_level being managed using sysfs below is a per device debug
3429 * level that is used instead of the global debug level if it (the per
3430 * device debug level) is set.
3432 static ssize_t show_debug_level(struct device *d,
3433 struct device_attribute *attr, char *buf)
3435 struct iwl_priv *priv = dev_get_drvdata(d);
3436 return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
3438 static ssize_t store_debug_level(struct device *d,
3439 struct device_attribute *attr,
3440 const char *buf, size_t count)
3442 struct iwl_priv *priv = dev_get_drvdata(d);
3446 ret = strict_strtoul(buf, 0, &val);
3448 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
3450 priv->debug_level = val;
3451 if (iwl_alloc_traffic_mem(priv))
3453 "Not enough memory to generate traffic log\n");
3455 return strnlen(buf, count);
3458 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3459 show_debug_level, store_debug_level);
3461 #endif /* CONFIG_IWLWIFI_DEBUG */
3463 static ssize_t show_temperature(struct device *d,
3464 struct device_attribute *attr, char *buf)
3466 struct iwl_priv *priv = dev_get_drvdata(d);
3468 if (!iwl_is_alive(priv))
3471 return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
3474 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3476 static ssize_t show_tx_power(struct device *d,
3477 struct device_attribute *attr, char *buf)
3479 struct iwl_priv *priv = dev_get_drvdata(d);
3480 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3483 static ssize_t store_tx_power(struct device *d,
3484 struct device_attribute *attr,
3485 const char *buf, size_t count)
3487 struct iwl_priv *priv = dev_get_drvdata(d);
3488 char *p = (char *)buf;
3491 val = simple_strtoul(p, &p, 10);
3493 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
3495 iwl3945_hw_reg_set_txpower(priv, val);
3500 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3502 static ssize_t show_flags(struct device *d,
3503 struct device_attribute *attr, char *buf)
3505 struct iwl_priv *priv = dev_get_drvdata(d);
3507 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3510 static ssize_t store_flags(struct device *d,
3511 struct device_attribute *attr,
3512 const char *buf, size_t count)
3514 struct iwl_priv *priv = dev_get_drvdata(d);
3515 u32 flags = simple_strtoul(buf, NULL, 0);
3517 mutex_lock(&priv->mutex);
3518 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3519 /* Cancel any currently running scans... */
3520 if (iwl_scan_cancel_timeout(priv, 100))
3521 IWL_WARN(priv, "Could not cancel scan.\n");
3523 IWL_DEBUG_INFO(priv, "Committing rxon.flags = 0x%04X\n",
3525 priv->staging_rxon.flags = cpu_to_le32(flags);
3526 iwlcore_commit_rxon(priv);
3529 mutex_unlock(&priv->mutex);
3534 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3536 static ssize_t show_filter_flags(struct device *d,
3537 struct device_attribute *attr, char *buf)
3539 struct iwl_priv *priv = dev_get_drvdata(d);
3541 return sprintf(buf, "0x%04X\n",
3542 le32_to_cpu(priv->active_rxon.filter_flags));
3545 static ssize_t store_filter_flags(struct device *d,
3546 struct device_attribute *attr,
3547 const char *buf, size_t count)
3549 struct iwl_priv *priv = dev_get_drvdata(d);
3550 u32 filter_flags = simple_strtoul(buf, NULL, 0);
3552 mutex_lock(&priv->mutex);
3553 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3554 /* Cancel any currently running scans... */
3555 if (iwl_scan_cancel_timeout(priv, 100))
3556 IWL_WARN(priv, "Could not cancel scan.\n");
3558 IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
3559 "0x%04X\n", filter_flags);
3560 priv->staging_rxon.filter_flags =
3561 cpu_to_le32(filter_flags);
3562 iwlcore_commit_rxon(priv);
3565 mutex_unlock(&priv->mutex);
3570 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3571 store_filter_flags);
3573 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3575 static ssize_t show_measurement(struct device *d,
3576 struct device_attribute *attr, char *buf)
3578 struct iwl_priv *priv = dev_get_drvdata(d);
3579 struct iwl_spectrum_notification measure_report;
3580 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3581 u8 *data = (u8 *)&measure_report;
3582 unsigned long flags;
3584 spin_lock_irqsave(&priv->lock, flags);
3585 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3586 spin_unlock_irqrestore(&priv->lock, flags);
3589 memcpy(&measure_report, &priv->measure_report, size);
3590 priv->measurement_status = 0;
3591 spin_unlock_irqrestore(&priv->lock, flags);
3593 while (size && (PAGE_SIZE - len)) {
3594 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3595 PAGE_SIZE - len, 1);
3597 if (PAGE_SIZE - len)
3601 size -= min(size, 16U);
3607 static ssize_t store_measurement(struct device *d,
3608 struct device_attribute *attr,
3609 const char *buf, size_t count)
3611 struct iwl_priv *priv = dev_get_drvdata(d);
3612 struct ieee80211_measurement_params params = {
3613 .channel = le16_to_cpu(priv->active_rxon.channel),
3614 .start_time = cpu_to_le64(priv->last_tsf),
3615 .duration = cpu_to_le16(1),
3617 u8 type = IWL_MEASURE_BASIC;
3623 strncpy(buffer, buf, min(sizeof(buffer), count));
3624 channel = simple_strtoul(p, NULL, 0);
3626 params.channel = channel;
3629 while (*p && *p != ' ')
3632 type = simple_strtoul(p + 1, NULL, 0);
3635 IWL_DEBUG_INFO(priv, "Invoking measurement of type %d on "
3636 "channel %d (for '%s')\n", type, params.channel, buf);
3637 iwl3945_get_measurement(priv, ¶ms, type);
3642 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3643 show_measurement, store_measurement);
3644 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
3646 static ssize_t store_retry_rate(struct device *d,
3647 struct device_attribute *attr,
3648 const char *buf, size_t count)
3650 struct iwl_priv *priv = dev_get_drvdata(d);
3652 priv->retry_rate = simple_strtoul(buf, NULL, 0);
3653 if (priv->retry_rate <= 0)
3654 priv->retry_rate = 1;
3659 static ssize_t show_retry_rate(struct device *d,
3660 struct device_attribute *attr, char *buf)
3662 struct iwl_priv *priv = dev_get_drvdata(d);
3663 return sprintf(buf, "%d", priv->retry_rate);
3666 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3670 static ssize_t show_channels(struct device *d,
3671 struct device_attribute *attr, char *buf)
3673 /* all this shit doesn't belong into sysfs anyway */
3677 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3679 static ssize_t show_statistics(struct device *d,
3680 struct device_attribute *attr, char *buf)
3682 struct iwl_priv *priv = dev_get_drvdata(d);
3683 u32 size = sizeof(struct iwl3945_notif_statistics);
3684 u32 len = 0, ofs = 0;
3685 u8 *data = (u8 *)&priv->statistics_39;
3688 if (!iwl_is_alive(priv))
3691 mutex_lock(&priv->mutex);
3692 rc = iwl_send_statistics_request(priv, CMD_SYNC, false);
3693 mutex_unlock(&priv->mutex);
3697 "Error sending statistics request: 0x%08X\n", rc);
3701 while (size && (PAGE_SIZE - len)) {
3702 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3703 PAGE_SIZE - len, 1);
3705 if (PAGE_SIZE - len)
3709 size -= min(size, 16U);
3715 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3717 static ssize_t show_antenna(struct device *d,
3718 struct device_attribute *attr, char *buf)
3720 struct iwl_priv *priv = dev_get_drvdata(d);
3722 if (!iwl_is_alive(priv))
3725 return sprintf(buf, "%d\n", iwl3945_mod_params.antenna);
3728 static ssize_t store_antenna(struct device *d,
3729 struct device_attribute *attr,
3730 const char *buf, size_t count)
3732 struct iwl_priv *priv __maybe_unused = dev_get_drvdata(d);
3738 if (sscanf(buf, "%1i", &ant) != 1) {
3739 IWL_DEBUG_INFO(priv, "not in hex or decimal form.\n");
3743 if ((ant >= 0) && (ant <= 2)) {
3744 IWL_DEBUG_INFO(priv, "Setting antenna select to %d.\n", ant);
3745 iwl3945_mod_params.antenna = (enum iwl3945_antenna)ant;
3747 IWL_DEBUG_INFO(priv, "Bad antenna select value %d.\n", ant);
3753 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
3755 static ssize_t show_status(struct device *d,
3756 struct device_attribute *attr, char *buf)
3758 struct iwl_priv *priv = dev_get_drvdata(d);
3759 if (!iwl_is_alive(priv))
3761 return sprintf(buf, "0x%08x\n", (int)priv->status);
3764 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3766 static ssize_t dump_error_log(struct device *d,
3767 struct device_attribute *attr,
3768 const char *buf, size_t count)
3770 struct iwl_priv *priv = dev_get_drvdata(d);
3771 char *p = (char *)buf;
3774 iwl3945_dump_nic_error_log(priv);
3776 return strnlen(buf, count);
3779 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
3781 /*****************************************************************************
3783 * driver setup and tear down
3785 *****************************************************************************/
3787 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
3789 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3791 init_waitqueue_head(&priv->wait_command_queue);
3793 INIT_WORK(&priv->up, iwl3945_bg_up);
3794 INIT_WORK(&priv->restart, iwl3945_bg_restart);
3795 INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
3796 INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
3797 INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
3798 INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
3799 INIT_DELAYED_WORK(&priv->rfkill_poll, iwl3945_rfkill_poll);
3800 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
3801 INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
3802 INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
3803 INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
3805 iwl3945_hw_setup_deferred_work(priv);
3807 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3808 iwl3945_irq_tasklet, (unsigned long)priv);
3811 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
3813 iwl3945_hw_cancel_deferred_work(priv);
3815 cancel_delayed_work_sync(&priv->init_alive_start);
3816 cancel_delayed_work(&priv->scan_check);
3817 cancel_delayed_work(&priv->alive_start);
3818 cancel_work_sync(&priv->beacon_update);
3821 static struct attribute *iwl3945_sysfs_entries[] = {
3822 &dev_attr_antenna.attr,
3823 &dev_attr_channels.attr,
3824 &dev_attr_dump_errors.attr,
3825 &dev_attr_flags.attr,
3826 &dev_attr_filter_flags.attr,
3827 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3828 &dev_attr_measurement.attr,
3830 &dev_attr_retry_rate.attr,
3831 &dev_attr_statistics.attr,
3832 &dev_attr_status.attr,
3833 &dev_attr_temperature.attr,
3834 &dev_attr_tx_power.attr,
3835 #ifdef CONFIG_IWLWIFI_DEBUG
3836 &dev_attr_debug_level.attr,
3841 static struct attribute_group iwl3945_attribute_group = {
3842 .name = NULL, /* put in device directory */
3843 .attrs = iwl3945_sysfs_entries,
3846 static struct ieee80211_ops iwl3945_hw_ops = {
3847 .tx = iwl3945_mac_tx,
3848 .start = iwl3945_mac_start,
3849 .stop = iwl3945_mac_stop,
3850 .add_interface = iwl_mac_add_interface,
3851 .remove_interface = iwl_mac_remove_interface,
3852 .config = iwl_mac_config,
3853 .configure_filter = iwl_configure_filter,
3854 .set_key = iwl3945_mac_set_key,
3855 .get_tx_stats = iwl_mac_get_tx_stats,
3856 .conf_tx = iwl_mac_conf_tx,
3857 .reset_tsf = iwl_mac_reset_tsf,
3858 .bss_info_changed = iwl_bss_info_changed,
3859 .hw_scan = iwl_mac_hw_scan
3862 static int iwl3945_init_drv(struct iwl_priv *priv)
3865 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
3867 priv->retry_rate = 1;
3868 priv->ibss_beacon = NULL;
3870 spin_lock_init(&priv->lock);
3871 spin_lock_init(&priv->sta_lock);
3872 spin_lock_init(&priv->hcmd_lock);
3874 INIT_LIST_HEAD(&priv->free_frames);
3876 mutex_init(&priv->mutex);
3878 /* Clear the driver's (not device's) station table */
3879 iwl_clear_stations_table(priv);
3881 priv->ieee_channels = NULL;
3882 priv->ieee_rates = NULL;
3883 priv->band = IEEE80211_BAND_2GHZ;
3885 priv->iw_mode = NL80211_IFTYPE_STATION;
3887 iwl_reset_qos(priv);
3889 priv->qos_data.qos_active = 0;
3890 priv->qos_data.qos_cap.val = 0;
3892 priv->rates_mask = IWL_RATES_MASK;
3893 priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER;
3895 if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
3896 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
3901 ret = iwl_init_channel_map(priv);
3903 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3907 /* Set up txpower settings in driver for all channels */
3908 if (iwl3945_txpower_set_from_eeprom(priv)) {
3910 goto err_free_channel_map;
3913 ret = iwlcore_init_geos(priv);
3915 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3916 goto err_free_channel_map;
3918 iwl3945_init_hw_rates(priv, priv->ieee_rates);
3922 err_free_channel_map:
3923 iwl_free_channel_map(priv);
3928 static int iwl3945_setup_mac(struct iwl_priv *priv)
3931 struct ieee80211_hw *hw = priv->hw;
3933 hw->rate_control_algorithm = "iwl-3945-rs";
3934 hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
3936 /* Tell mac80211 our characteristics */
3937 hw->flags = IEEE80211_HW_SIGNAL_DBM |
3938 IEEE80211_HW_NOISE_DBM |
3939 IEEE80211_HW_SPECTRUM_MGMT |
3940 IEEE80211_HW_SUPPORTS_PS |
3941 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
3943 hw->wiphy->interface_modes =
3944 BIT(NL80211_IFTYPE_STATION) |
3945 BIT(NL80211_IFTYPE_ADHOC);
3947 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY |
3948 WIPHY_FLAG_DISABLE_BEACON_HINTS;
3950 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX_3945;
3951 /* we create the 802.11 header and a zero-length SSID element */
3952 hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
3954 /* Default value; 4 EDCA QOS priorities */
3957 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
3958 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3959 &priv->bands[IEEE80211_BAND_2GHZ];
3961 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
3962 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
3963 &priv->bands[IEEE80211_BAND_5GHZ];
3965 ret = ieee80211_register_hw(priv->hw);
3967 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
3970 priv->mac80211_registered = 1;
3975 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3978 struct iwl_priv *priv;
3979 struct ieee80211_hw *hw;
3980 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3981 struct iwl3945_eeprom *eeprom;
3982 unsigned long flags;
3984 /***********************
3985 * 1. Allocating HW data
3986 * ********************/
3988 /* mac80211 allocates memory for this device instance, including
3989 * space for this driver's private structure */
3990 hw = iwl_alloc_all(cfg, &iwl3945_hw_ops);
3992 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
3997 SET_IEEE80211_DEV(hw, &pdev->dev);
4000 * Disabling hardware scan means that mac80211 will perform scans
4001 * "the hard way", rather than using device's scan.
4003 if (iwl3945_mod_params.disable_hw_scan) {
4004 IWL_DEBUG_INFO(priv, "Disabling hw_scan\n");
4005 iwl3945_hw_ops.hw_scan = NULL;
4009 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
4011 priv->pci_dev = pdev;
4012 priv->inta_mask = CSR_INI_SET_MASK;
4014 #ifdef CONFIG_IWLWIFI_DEBUG
4015 atomic_set(&priv->restrict_refcnt, 0);
4017 if (iwl_alloc_traffic_mem(priv))
4018 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
4020 /***************************
4021 * 2. Initializing PCI bus
4022 * *************************/
4023 if (pci_enable_device(pdev)) {
4025 goto out_ieee80211_free_hw;
4028 pci_set_master(pdev);
4030 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4032 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
4034 IWL_WARN(priv, "No suitable DMA available.\n");
4035 goto out_pci_disable_device;
4038 pci_set_drvdata(pdev, priv);
4039 err = pci_request_regions(pdev, DRV_NAME);
4041 goto out_pci_disable_device;
4043 /***********************
4044 * 3. Read REV Register
4045 * ********************/
4046 priv->hw_base = pci_iomap(pdev, 0, 0);
4047 if (!priv->hw_base) {
4049 goto out_pci_release_regions;
4052 IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
4053 (unsigned long long) pci_resource_len(pdev, 0));
4054 IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
4056 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4057 * PCI Tx retries from interfering with C3 CPU state */
4058 pci_write_config_byte(pdev, 0x41, 0x00);
4060 /* this spin lock will be used in apm_ops.init and EEPROM access
4061 * we should init now
4063 spin_lock_init(&priv->reg_lock);
4065 /***********************
4067 * ********************/
4069 /* Read the EEPROM */
4070 err = iwl_eeprom_init(priv);
4072 IWL_ERR(priv, "Unable to init EEPROM\n");
4075 /* MAC Address location in EEPROM same for 3945/4965 */
4076 eeprom = (struct iwl3945_eeprom *)priv->eeprom;
4077 memcpy(priv->mac_addr, eeprom->mac_address, ETH_ALEN);
4078 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
4079 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4081 /***********************
4082 * 5. Setup HW Constants
4083 * ********************/
4084 /* Device-specific setup */
4085 if (iwl3945_hw_set_hw_params(priv)) {
4086 IWL_ERR(priv, "failed to set hw settings\n");
4087 goto out_eeprom_free;
4090 /***********************
4092 * ********************/
4094 err = iwl3945_init_drv(priv);
4096 IWL_ERR(priv, "initializing driver failed\n");
4097 goto out_unset_hw_params;
4100 IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
4103 /***********************
4105 * ********************/
4107 spin_lock_irqsave(&priv->lock, flags);
4108 iwl_disable_interrupts(priv);
4109 spin_unlock_irqrestore(&priv->lock, flags);
4111 pci_enable_msi(priv->pci_dev);
4113 err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr,
4114 IRQF_SHARED, DRV_NAME, priv);
4116 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
4117 goto out_disable_msi;
4120 err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4122 IWL_ERR(priv, "failed to create sysfs device attributes\n");
4123 goto out_release_irq;
4126 iwl_set_rxon_channel(priv,
4127 &priv->bands[IEEE80211_BAND_2GHZ].channels[5]);
4128 iwl3945_setup_deferred_work(priv);
4129 iwl3945_setup_rx_handlers(priv);
4130 iwl_power_initialize(priv);
4132 /*********************************
4133 * 8. Setup and Register mac80211
4134 * *******************************/
4136 iwl_enable_interrupts(priv);
4138 err = iwl3945_setup_mac(priv);
4140 goto out_remove_sysfs;
4142 err = iwl_dbgfs_register(priv, DRV_NAME);
4144 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
4146 /* Start monitoring the killswitch */
4147 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
4153 destroy_workqueue(priv->workqueue);
4154 priv->workqueue = NULL;
4155 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4157 free_irq(priv->pci_dev->irq, priv);
4159 pci_disable_msi(priv->pci_dev);
4160 iwlcore_free_geos(priv);
4161 iwl_free_channel_map(priv);
4162 out_unset_hw_params:
4163 iwl3945_unset_hw_params(priv);
4165 iwl_eeprom_free(priv);
4167 pci_iounmap(pdev, priv->hw_base);
4168 out_pci_release_regions:
4169 pci_release_regions(pdev);
4170 out_pci_disable_device:
4171 pci_set_drvdata(pdev, NULL);
4172 pci_disable_device(pdev);
4173 out_ieee80211_free_hw:
4174 iwl_free_traffic_mem(priv);
4175 ieee80211_free_hw(priv->hw);
4180 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
4182 struct iwl_priv *priv = pci_get_drvdata(pdev);
4183 unsigned long flags;
4188 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
4190 iwl_dbgfs_unregister(priv);
4192 set_bit(STATUS_EXIT_PENDING, &priv->status);
4194 if (priv->mac80211_registered) {
4195 ieee80211_unregister_hw(priv->hw);
4196 priv->mac80211_registered = 0;
4202 * Make sure device is reset to low power before unloading driver.
4203 * This may be redundant with iwl_down(), but there are paths to
4204 * run iwl_down() without calling apm_ops.stop(), and there are
4205 * paths to avoid running iwl_down() at all before leaving driver.
4206 * This (inexpensive) call *makes sure* device is reset.
4208 priv->cfg->ops->lib->apm_ops.stop(priv);
4210 /* make sure we flush any pending irq or
4211 * tasklet for the driver
4213 spin_lock_irqsave(&priv->lock, flags);
4214 iwl_disable_interrupts(priv);
4215 spin_unlock_irqrestore(&priv->lock, flags);
4217 iwl_synchronize_irq(priv);
4219 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4221 cancel_delayed_work_sync(&priv->rfkill_poll);
4223 iwl3945_dealloc_ucode_pci(priv);
4226 iwl3945_rx_queue_free(priv, &priv->rxq);
4227 iwl3945_hw_txq_ctx_free(priv);
4229 iwl3945_unset_hw_params(priv);
4230 iwl_clear_stations_table(priv);
4232 /*netif_stop_queue(dev); */
4233 flush_workqueue(priv->workqueue);
4235 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4236 * priv->workqueue... so we can't take down the workqueue
4238 destroy_workqueue(priv->workqueue);
4239 priv->workqueue = NULL;
4240 iwl_free_traffic_mem(priv);
4242 free_irq(pdev->irq, priv);
4243 pci_disable_msi(pdev);
4245 pci_iounmap(pdev, priv->hw_base);
4246 pci_release_regions(pdev);
4247 pci_disable_device(pdev);
4248 pci_set_drvdata(pdev, NULL);
4250 iwl_free_channel_map(priv);
4251 iwlcore_free_geos(priv);
4253 if (priv->ibss_beacon)
4254 dev_kfree_skb(priv->ibss_beacon);
4256 ieee80211_free_hw(priv->hw);
4260 /*****************************************************************************
4262 * driver and module entry point
4264 *****************************************************************************/
4266 static struct pci_driver iwl3945_driver = {
4268 .id_table = iwl3945_hw_card_ids,
4269 .probe = iwl3945_pci_probe,
4270 .remove = __devexit_p(iwl3945_pci_remove),
4272 .suspend = iwl_pci_suspend,
4273 .resume = iwl_pci_resume,
4277 static int __init iwl3945_init(void)
4281 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4282 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4284 ret = iwl3945_rate_control_register();
4286 printk(KERN_ERR DRV_NAME
4287 "Unable to register rate control algorithm: %d\n", ret);
4291 ret = pci_register_driver(&iwl3945_driver);
4293 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
4294 goto error_register;
4300 iwl3945_rate_control_unregister();
4304 static void __exit iwl3945_exit(void)
4306 pci_unregister_driver(&iwl3945_driver);
4307 iwl3945_rate_control_unregister();
4310 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
4312 module_param_named(antenna, iwl3945_mod_params.antenna, int, S_IRUGO);
4313 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
4314 module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, S_IRUGO);
4315 MODULE_PARM_DESC(swcrypto,
4316 "using software crypto (default 1 [software])\n");
4317 #ifdef CONFIG_IWLWIFI_DEBUG
4318 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
4319 MODULE_PARM_DESC(debug, "debug output mask");
4321 module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan,
4323 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
4324 module_param_named(fw_restart3945, iwl3945_mod_params.restart_fw, int, S_IRUGO);
4325 MODULE_PARM_DESC(fw_restart3945, "restart firmware in case of error");
4327 module_exit(iwl3945_exit);
4328 module_init(iwl3945_init);