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/skbuff.h>
37 #include <linux/netdevice.h>
38 #include <linux/wireless.h>
39 #include <linux/firmware.h>
40 #include <linux/etherdevice.h>
41 #include <linux/if_arp.h>
43 #include <net/ieee80211_radiotap.h>
44 #include <net/lib80211.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 IWL39_VERSION "1.2.26k" VD VS
80 #define DRV_COPYRIGHT "Copyright(c) 2003-2009 Intel Corporation"
81 #define DRV_AUTHOR "<ilw@linux.intel.com>"
82 #define DRV_VERSION IWL39_VERSION
85 MODULE_DESCRIPTION(DRV_DESCRIPTION);
86 MODULE_VERSION(DRV_VERSION);
87 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
88 MODULE_LICENSE("GPL");
90 /* module parameters */
91 struct iwl_mod_params iwl3945_mod_params = {
92 .num_of_queues = IWL39_NUM_QUEUES, /* Not used */
95 /* the rest are 0 by default */
99 * iwl3945_get_antenna_flags - Get antenna flags for RXON command
100 * @priv: eeprom and antenna fields are used to determine antenna flags
102 * priv->eeprom39 is used to determine if antenna AUX/MAIN are reversed
103 * iwl3945_mod_params.antenna specifies the antenna diversity mode:
105 * IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
106 * IWL_ANTENNA_MAIN - Force MAIN antenna
107 * IWL_ANTENNA_AUX - Force AUX antenna
109 __le32 iwl3945_get_antenna_flags(const struct iwl_priv *priv)
111 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
113 switch (iwl3945_mod_params.antenna) {
114 case IWL_ANTENNA_DIVERSITY:
117 case IWL_ANTENNA_MAIN:
118 if (eeprom->antenna_switch_type)
119 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
120 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
122 case IWL_ANTENNA_AUX:
123 if (eeprom->antenna_switch_type)
124 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
125 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
128 /* bad antenna selector value */
129 IWL_ERR(priv, "Bad antenna selector value (0x%x)\n",
130 iwl3945_mod_params.antenna);
132 return 0; /* "diversity" is default if error */
135 static int iwl3945_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
136 struct ieee80211_key_conf *keyconf,
140 __le16 key_flags = 0;
143 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
144 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
146 if (sta_id == priv->hw_params.bcast_sta_id)
147 key_flags |= STA_KEY_MULTICAST_MSK;
149 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
150 keyconf->hw_key_idx = keyconf->keyidx;
151 key_flags &= ~STA_KEY_FLG_INVALID;
153 spin_lock_irqsave(&priv->sta_lock, flags);
154 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
155 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
156 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
159 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
162 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
163 == STA_KEY_FLG_NO_ENC)
164 priv->stations[sta_id].sta.key.key_offset =
165 iwl_get_free_ucode_key_index(priv);
166 /* else, we are overriding an existing key => no need to allocated room
169 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
170 "no space for a new key");
172 priv->stations[sta_id].sta.key.key_flags = key_flags;
173 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
174 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
176 IWL_DEBUG_INFO(priv, "hwcrypto: modify ucode station key info\n");
178 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
180 spin_unlock_irqrestore(&priv->sta_lock, flags);
185 static int iwl3945_set_tkip_dynamic_key_info(struct iwl_priv *priv,
186 struct ieee80211_key_conf *keyconf,
192 static int iwl3945_set_wep_dynamic_key_info(struct iwl_priv *priv,
193 struct ieee80211_key_conf *keyconf,
199 static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
203 spin_lock_irqsave(&priv->sta_lock, flags);
204 memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl_hw_key));
205 memset(&priv->stations[sta_id].sta.key, 0,
206 sizeof(struct iwl4965_keyinfo));
207 priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
208 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
209 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
210 spin_unlock_irqrestore(&priv->sta_lock, flags);
212 IWL_DEBUG_INFO(priv, "hwcrypto: clear ucode station key info\n");
213 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, 0);
217 static int iwl3945_set_dynamic_key(struct iwl_priv *priv,
218 struct ieee80211_key_conf *keyconf, u8 sta_id)
222 keyconf->hw_key_idx = HW_KEY_DYNAMIC;
224 switch (keyconf->alg) {
226 ret = iwl3945_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
229 ret = iwl3945_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
232 ret = iwl3945_set_wep_dynamic_key_info(priv, keyconf, sta_id);
235 IWL_ERR(priv, "Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
239 IWL_DEBUG_WEP(priv, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
240 keyconf->alg, keyconf->keylen, keyconf->keyidx,
246 static int iwl3945_remove_static_key(struct iwl_priv *priv)
248 int ret = -EOPNOTSUPP;
253 static int iwl3945_set_static_key(struct iwl_priv *priv,
254 struct ieee80211_key_conf *key)
256 if (key->alg == ALG_WEP)
259 IWL_ERR(priv, "Static key invalid: alg %d\n", key->alg);
263 static void iwl3945_clear_free_frames(struct iwl_priv *priv)
265 struct list_head *element;
267 IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
270 while (!list_empty(&priv->free_frames)) {
271 element = priv->free_frames.next;
273 kfree(list_entry(element, struct iwl3945_frame, list));
274 priv->frames_count--;
277 if (priv->frames_count) {
278 IWL_WARN(priv, "%d frames still in use. Did we lose one?\n",
280 priv->frames_count = 0;
284 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv)
286 struct iwl3945_frame *frame;
287 struct list_head *element;
288 if (list_empty(&priv->free_frames)) {
289 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
291 IWL_ERR(priv, "Could not allocate frame!\n");
295 priv->frames_count++;
299 element = priv->free_frames.next;
301 return list_entry(element, struct iwl3945_frame, list);
304 static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame)
306 memset(frame, 0, sizeof(*frame));
307 list_add(&frame->list, &priv->free_frames);
310 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
311 struct ieee80211_hdr *hdr,
315 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
316 ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
317 (priv->iw_mode != NL80211_IFTYPE_AP)))
320 if (priv->ibss_beacon->len > left)
323 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
325 return priv->ibss_beacon->len;
328 static int iwl3945_send_beacon_cmd(struct iwl_priv *priv)
330 struct iwl3945_frame *frame;
331 unsigned int frame_size;
335 frame = iwl3945_get_free_frame(priv);
338 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
343 rate = iwl_rate_get_lowest_plcp(priv);
345 frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
347 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
350 iwl3945_free_frame(priv, frame);
355 static void iwl3945_unset_hw_params(struct iwl_priv *priv)
357 if (priv->shared_virt)
358 pci_free_consistent(priv->pci_dev,
359 sizeof(struct iwl3945_shared),
364 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
365 struct ieee80211_tx_info *info,
366 struct iwl_device_cmd *cmd,
367 struct sk_buff *skb_frag,
370 struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
371 struct iwl_hw_key *keyinfo = &priv->stations[sta_id].keyinfo;
373 switch (keyinfo->alg) {
375 tx->sec_ctl = TX_CMD_SEC_CCM;
376 memcpy(tx->key, keyinfo->key, keyinfo->keylen);
377 IWL_DEBUG_TX(priv, "tx_cmd with AES hwcrypto\n");
384 tx->sec_ctl = TX_CMD_SEC_WEP |
385 (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
387 if (keyinfo->keylen == 13)
388 tx->sec_ctl |= TX_CMD_SEC_KEY128;
390 memcpy(&tx->key[3], keyinfo->key, keyinfo->keylen);
392 IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption "
393 "with key %d\n", info->control.hw_key->hw_key_idx);
397 IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg);
403 * handle build REPLY_TX command notification.
405 static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
406 struct iwl_device_cmd *cmd,
407 struct ieee80211_tx_info *info,
408 struct ieee80211_hdr *hdr, u8 std_id)
410 struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
411 __le32 tx_flags = tx->tx_flags;
412 __le16 fc = hdr->frame_control;
413 u8 rc_flags = info->control.rates[0].flags;
415 tx->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
416 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
417 tx_flags |= TX_CMD_FLG_ACK_MSK;
418 if (ieee80211_is_mgmt(fc))
419 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
420 if (ieee80211_is_probe_resp(fc) &&
421 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
422 tx_flags |= TX_CMD_FLG_TSF_MSK;
424 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
425 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
429 if (ieee80211_has_morefrags(fc))
430 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
432 if (ieee80211_is_data_qos(fc)) {
433 u8 *qc = ieee80211_get_qos_ctl(hdr);
434 tx->tid_tspec = qc[0] & 0xf;
435 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
437 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
440 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
441 tx_flags |= TX_CMD_FLG_RTS_MSK;
442 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
443 } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
444 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
445 tx_flags |= TX_CMD_FLG_CTS_MSK;
448 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
449 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
451 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
452 if (ieee80211_is_mgmt(fc)) {
453 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
454 tx->timeout.pm_frame_timeout = cpu_to_le16(3);
456 tx->timeout.pm_frame_timeout = cpu_to_le16(2);
458 tx->timeout.pm_frame_timeout = 0;
459 #ifdef CONFIG_IWLWIFI_LEDS
460 priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
465 tx->tx_flags = tx_flags;
466 tx->next_frame_len = 0;
470 * start REPLY_TX command process
472 static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
474 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
475 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
476 struct iwl3945_tx_cmd *tx;
477 struct iwl_tx_queue *txq = NULL;
478 struct iwl_queue *q = NULL;
479 struct iwl_device_cmd *out_cmd;
480 struct iwl_cmd_meta *out_meta;
481 dma_addr_t phys_addr;
482 dma_addr_t txcmd_phys;
483 int txq_id = skb_get_queue_mapping(skb);
484 u16 len, idx, len_org, hdr_len; /* TODO: len_org is not used */
491 u8 wait_write_ptr = 0;
496 spin_lock_irqsave(&priv->lock, flags);
497 if (iwl_is_rfkill(priv)) {
498 IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n");
502 if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
503 IWL_ERR(priv, "ERROR: No TX rate available.\n");
507 unicast = !is_multicast_ether_addr(hdr->addr1);
510 fc = hdr->frame_control;
512 #ifdef CONFIG_IWLWIFI_DEBUG
513 if (ieee80211_is_auth(fc))
514 IWL_DEBUG_TX(priv, "Sending AUTH frame\n");
515 else if (ieee80211_is_assoc_req(fc))
516 IWL_DEBUG_TX(priv, "Sending ASSOC frame\n");
517 else if (ieee80211_is_reassoc_req(fc))
518 IWL_DEBUG_TX(priv, "Sending REASSOC frame\n");
521 /* drop all non-injected data frame if we are not associated */
522 if (ieee80211_is_data(fc) &&
523 !(info->flags & IEEE80211_TX_CTL_INJECTED) &&
524 (!iwl_is_associated(priv) ||
525 ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
526 IWL_DEBUG_DROP(priv, "Dropping - !iwl_is_associated\n");
530 spin_unlock_irqrestore(&priv->lock, flags);
532 hdr_len = ieee80211_hdrlen(fc);
534 /* Find (or create) index into station table for destination station */
535 if (info->flags & IEEE80211_TX_CTL_INJECTED)
536 sta_id = priv->hw_params.bcast_sta_id;
538 sta_id = iwl_get_sta_id(priv, hdr);
539 if (sta_id == IWL_INVALID_STATION) {
540 IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n",
545 IWL_DEBUG_RATE(priv, "station Id %d\n", sta_id);
547 if (ieee80211_is_data_qos(fc)) {
548 qc = ieee80211_get_qos_ctl(hdr);
549 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
550 if (unlikely(tid >= MAX_TID_COUNT))
552 seq_number = priv->stations[sta_id].tid[tid].seq_number &
554 hdr->seq_ctrl = cpu_to_le16(seq_number) |
556 cpu_to_le16(IEEE80211_SCTL_FRAG));
560 /* Descriptor for chosen Tx queue */
561 txq = &priv->txq[txq_id];
564 spin_lock_irqsave(&priv->lock, flags);
566 idx = get_cmd_index(q, q->write_ptr, 0);
568 /* Set up driver data for this TFD */
569 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
570 txq->txb[q->write_ptr].skb[0] = skb;
572 /* Init first empty entry in queue's array of Tx/cmd buffers */
573 out_cmd = txq->cmd[idx];
574 out_meta = &txq->meta[idx];
575 tx = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload;
576 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
577 memset(tx, 0, sizeof(*tx));
580 * Set up the Tx-command (not MAC!) header.
581 * Store the chosen Tx queue and TFD index within the sequence field;
582 * after Tx, uCode's Tx response will return this value so driver can
583 * locate the frame within the tx queue and do post-tx processing.
585 out_cmd->hdr.cmd = REPLY_TX;
586 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
587 INDEX_TO_SEQ(q->write_ptr)));
589 /* Copy MAC header from skb into command buffer */
590 memcpy(tx->hdr, hdr, hdr_len);
593 if (info->control.hw_key)
594 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, sta_id);
596 /* TODO need this for burst mode later on */
597 iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id);
599 /* set is_hcca to 0; it probably will never be implemented */
600 iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
602 /* Total # bytes to be transmitted */
604 tx->len = cpu_to_le16(len);
606 iwl_dbg_log_tx_data_frame(priv, len, hdr);
607 iwl_update_stats(priv, true, fc, len);
608 tx->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
609 tx->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
611 if (!ieee80211_has_morefrags(hdr->frame_control)) {
612 txq->need_update = 1;
614 priv->stations[sta_id].tid[tid].seq_number = seq_number;
617 txq->need_update = 0;
620 IWL_DEBUG_TX(priv, "sequence nr = 0X%x \n",
621 le16_to_cpu(out_cmd->hdr.sequence));
622 IWL_DEBUG_TX(priv, "tx_flags = 0X%x \n", le32_to_cpu(tx->tx_flags));
623 iwl_print_hex_dump(priv, IWL_DL_TX, tx, sizeof(*tx));
624 iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx->hdr,
625 ieee80211_hdrlen(fc));
628 * Use the first empty entry in this queue's command buffer array
629 * to contain the Tx command and MAC header concatenated together
630 * (payload data will be in another buffer).
631 * Size of this varies, due to varying MAC header length.
632 * If end is not dword aligned, we'll have 2 extra bytes at the end
633 * of the MAC header (device reads on dword boundaries).
634 * We'll tell device about this padding later.
636 len = sizeof(struct iwl3945_tx_cmd) +
637 sizeof(struct iwl_cmd_header) + hdr_len;
640 len = (len + 3) & ~3;
647 /* Physical address of this Tx command's header (not MAC header!),
648 * within command buffer array. */
649 txcmd_phys = pci_map_single(priv->pci_dev, &out_cmd->hdr,
650 len, PCI_DMA_TODEVICE);
651 /* we do not map meta data ... so we can safely access address to
652 * provide to unmap command*/
653 pci_unmap_addr_set(out_meta, mapping, txcmd_phys);
654 pci_unmap_len_set(out_meta, len, len);
656 /* Add buffer containing Tx command and MAC(!) header to TFD's
658 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
659 txcmd_phys, len, 1, 0);
662 /* Set up TFD's 2nd entry to point directly to remainder of skb,
663 * if any (802.11 null frames have no payload). */
664 len = skb->len - hdr_len;
666 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
667 len, PCI_DMA_TODEVICE);
668 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
674 /* Tell device the write index *just past* this latest filled TFD */
675 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
676 rc = iwl_txq_update_write_ptr(priv, txq);
677 spin_unlock_irqrestore(&priv->lock, flags);
682 if ((iwl_queue_space(q) < q->high_mark)
683 && priv->mac80211_registered) {
684 if (wait_write_ptr) {
685 spin_lock_irqsave(&priv->lock, flags);
686 txq->need_update = 1;
687 iwl_txq_update_write_ptr(priv, txq);
688 spin_unlock_irqrestore(&priv->lock, flags);
691 iwl_stop_queue(priv, skb_get_queue_mapping(skb));
697 spin_unlock_irqrestore(&priv->lock, flags);
702 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
704 #include "iwl-spectrum.h"
706 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
707 #define BEACON_TIME_MASK_HIGH 0xFF000000
708 #define TIME_UNIT 1024
711 * extended beacon time format
712 * time in usec will be changed into a 32-bit value in 8:24 format
713 * the high 1 byte is the beacon counts
714 * the lower 3 bytes is the time in usec within one beacon interval
717 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
721 u32 interval = beacon_interval * 1024;
723 if (!interval || !usec)
726 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
727 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
729 return (quot << 24) + rem;
732 /* base is usually what we get from ucode with each received frame,
733 * the same as HW timer counter counting down
736 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
738 u32 base_low = base & BEACON_TIME_MASK_LOW;
739 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
740 u32 interval = beacon_interval * TIME_UNIT;
741 u32 res = (base & BEACON_TIME_MASK_HIGH) +
742 (addon & BEACON_TIME_MASK_HIGH);
744 if (base_low > addon_low)
745 res += base_low - addon_low;
746 else if (base_low < addon_low) {
747 res += interval + base_low - addon_low;
752 return cpu_to_le32(res);
755 static int iwl3945_get_measurement(struct iwl_priv *priv,
756 struct ieee80211_measurement_params *params,
759 struct iwl_spectrum_cmd spectrum;
760 struct iwl_rx_packet *res;
761 struct iwl_host_cmd cmd = {
762 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
763 .data = (void *)&spectrum,
764 .flags = CMD_WANT_SKB,
766 u32 add_time = le64_to_cpu(params->start_time);
768 int spectrum_resp_status;
769 int duration = le16_to_cpu(params->duration);
771 if (iwl_is_associated(priv))
773 iwl3945_usecs_to_beacons(
774 le64_to_cpu(params->start_time) - priv->last_tsf,
775 le16_to_cpu(priv->rxon_timing.beacon_interval));
777 memset(&spectrum, 0, sizeof(spectrum));
779 spectrum.channel_count = cpu_to_le16(1);
781 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
782 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
783 cmd.len = sizeof(spectrum);
784 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
786 if (iwl_is_associated(priv))
787 spectrum.start_time =
788 iwl3945_add_beacon_time(priv->last_beacon_time,
790 le16_to_cpu(priv->rxon_timing.beacon_interval));
792 spectrum.start_time = 0;
794 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
795 spectrum.channels[0].channel = params->channel;
796 spectrum.channels[0].type = type;
797 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
798 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
799 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
801 rc = iwl_send_cmd_sync(priv, &cmd);
805 res = (struct iwl_rx_packet *)cmd.reply_skb->data;
806 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
807 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
811 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
812 switch (spectrum_resp_status) {
813 case 0: /* Command will be handled */
814 if (res->u.spectrum.id != 0xff) {
815 IWL_DEBUG_INFO(priv, "Replaced existing measurement: %d\n",
817 priv->measurement_status &= ~MEASUREMENT_READY;
819 priv->measurement_status |= MEASUREMENT_ACTIVE;
823 case 1: /* Command will not be handled */
828 dev_kfree_skb_any(cmd.reply_skb);
834 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
835 struct iwl_rx_mem_buffer *rxb)
837 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
838 struct iwl_alive_resp *palive;
839 struct delayed_work *pwork;
841 palive = &pkt->u.alive_frame;
843 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
845 palive->is_valid, palive->ver_type,
846 palive->ver_subtype);
848 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
849 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
850 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
851 sizeof(struct iwl_alive_resp));
852 pwork = &priv->init_alive_start;
854 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
855 memcpy(&priv->card_alive, &pkt->u.alive_frame,
856 sizeof(struct iwl_alive_resp));
857 pwork = &priv->alive_start;
858 iwl3945_disable_events(priv);
861 /* We delay the ALIVE response by 5ms to
862 * give the HW RF Kill time to activate... */
863 if (palive->is_valid == UCODE_VALID_OK)
864 queue_delayed_work(priv->workqueue, pwork,
865 msecs_to_jiffies(5));
867 IWL_WARN(priv, "uCode did not respond OK.\n");
870 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
871 struct iwl_rx_mem_buffer *rxb)
873 #ifdef CONFIG_IWLWIFI_DEBUG
874 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
877 IWL_DEBUG_RX(priv, "Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
881 static void iwl3945_bg_beacon_update(struct work_struct *work)
883 struct iwl_priv *priv =
884 container_of(work, struct iwl_priv, beacon_update);
885 struct sk_buff *beacon;
887 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
888 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
891 IWL_ERR(priv, "update beacon failed\n");
895 mutex_lock(&priv->mutex);
896 /* new beacon skb is allocated every time; dispose previous.*/
897 if (priv->ibss_beacon)
898 dev_kfree_skb(priv->ibss_beacon);
900 priv->ibss_beacon = beacon;
901 mutex_unlock(&priv->mutex);
903 iwl3945_send_beacon_cmd(priv);
906 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
907 struct iwl_rx_mem_buffer *rxb)
909 #ifdef CONFIG_IWLWIFI_DEBUG
910 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
911 struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
912 u8 rate = beacon->beacon_notify_hdr.rate;
914 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
915 "tsf %d %d rate %d\n",
916 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
917 beacon->beacon_notify_hdr.failure_frame,
918 le32_to_cpu(beacon->ibss_mgr_status),
919 le32_to_cpu(beacon->high_tsf),
920 le32_to_cpu(beacon->low_tsf), rate);
923 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
924 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
925 queue_work(priv->workqueue, &priv->beacon_update);
928 /* Handle notification from uCode that card's power state is changing
929 * due to software, hardware, or critical temperature RFKILL */
930 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
931 struct iwl_rx_mem_buffer *rxb)
933 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
934 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
935 unsigned long status = priv->status;
937 IWL_WARN(priv, "Card state received: HW:%s SW:%s\n",
938 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
939 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
941 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
942 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
944 if (flags & HW_CARD_DISABLED)
945 set_bit(STATUS_RF_KILL_HW, &priv->status);
947 clear_bit(STATUS_RF_KILL_HW, &priv->status);
950 iwl_scan_cancel(priv);
952 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
953 test_bit(STATUS_RF_KILL_HW, &priv->status)))
954 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
955 test_bit(STATUS_RF_KILL_HW, &priv->status));
957 wake_up_interruptible(&priv->wait_command_queue);
961 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
963 * Setup the RX handlers for each of the reply types sent from the uCode
966 * This function chains into the hardware specific files for them to setup
967 * any hardware specific handlers as well.
969 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
971 priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
972 priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
973 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
974 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
975 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
976 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
977 iwl_rx_pm_debug_statistics_notif;
978 priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
981 * The same handler is used for both the REPLY to a discrete
982 * statistics request from the host as well as for the periodic
983 * statistics notifications (after received beacons) from the uCode.
985 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
986 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
988 iwl_setup_spectrum_handlers(priv);
989 iwl_setup_rx_scan_handlers(priv);
990 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
992 /* Set up hardware specific Rx handlers */
993 iwl3945_hw_rx_handler_setup(priv);
996 /************************** RX-FUNCTIONS ****************************/
998 * Rx theory of operation
1000 * The host allocates 32 DMA target addresses and passes the host address
1001 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
1005 * The host/firmware share two index registers for managing the Rx buffers.
1007 * The READ index maps to the first position that the firmware may be writing
1008 * to -- the driver can read up to (but not including) this position and get
1010 * The READ index is managed by the firmware once the card is enabled.
1012 * The WRITE index maps to the last position the driver has read from -- the
1013 * position preceding WRITE is the last slot the firmware can place a packet.
1015 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
1018 * During initialization, the host sets up the READ queue position to the first
1019 * INDEX position, and WRITE to the last (READ - 1 wrapped)
1021 * When the firmware places a packet in a buffer, it will advance the READ index
1022 * and fire the RX interrupt. The driver can then query the READ index and
1023 * process as many packets as possible, moving the WRITE index forward as it
1024 * resets the Rx queue buffers with new memory.
1026 * The management in the driver is as follows:
1027 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
1028 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
1029 * to replenish the iwl->rxq->rx_free.
1030 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
1031 * iwl->rxq is replenished and the READ INDEX is updated (updating the
1032 * 'processed' and 'read' driver indexes as well)
1033 * + A received packet is processed and handed to the kernel network stack,
1034 * detached from the iwl->rxq. The driver 'processed' index is updated.
1035 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
1036 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
1037 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
1038 * were enough free buffers and RX_STALLED is set it is cleared.
1043 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
1044 * iwl3945_rx_queue_restock
1045 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
1046 * queue, updates firmware pointers, and updates
1047 * the WRITE index. If insufficient rx_free buffers
1048 * are available, schedules iwl3945_rx_replenish
1050 * -- enable interrupts --
1051 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
1052 * READ INDEX, detaching the SKB from the pool.
1053 * Moves the packet buffer from queue to rx_used.
1054 * Calls iwl3945_rx_queue_restock to refill any empty
1061 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
1063 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
1064 dma_addr_t dma_addr)
1066 return cpu_to_le32((u32)dma_addr);
1070 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
1072 * If there are slots in the RX queue that need to be restocked,
1073 * and we have free pre-allocated buffers, fill the ranks as much
1074 * as we can, pulling from rx_free.
1076 * This moves the 'write' index forward to catch up with 'processed', and
1077 * also updates the memory address in the firmware to reference the new
1080 static int iwl3945_rx_queue_restock(struct iwl_priv *priv)
1082 struct iwl_rx_queue *rxq = &priv->rxq;
1083 struct list_head *element;
1084 struct iwl_rx_mem_buffer *rxb;
1085 unsigned long flags;
1088 spin_lock_irqsave(&rxq->lock, flags);
1089 write = rxq->write & ~0x7;
1090 while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
1091 /* Get next free Rx buffer, remove from free list */
1092 element = rxq->rx_free.next;
1093 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1096 /* Point to Rx buffer via next RBD in circular buffer */
1097 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->real_dma_addr);
1098 rxq->queue[rxq->write] = rxb;
1099 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
1102 spin_unlock_irqrestore(&rxq->lock, flags);
1103 /* If the pre-allocated buffer pool is dropping low, schedule to
1105 if (rxq->free_count <= RX_LOW_WATERMARK)
1106 queue_work(priv->workqueue, &priv->rx_replenish);
1109 /* If we've added more space for the firmware to place data, tell it.
1110 * Increment device's write pointer in multiples of 8. */
1111 if ((rxq->write_actual != (rxq->write & ~0x7))
1112 || (abs(rxq->write - rxq->read) > 7)) {
1113 spin_lock_irqsave(&rxq->lock, flags);
1114 rxq->need_update = 1;
1115 spin_unlock_irqrestore(&rxq->lock, flags);
1116 rc = iwl_rx_queue_update_write_ptr(priv, rxq);
1125 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1127 * When moving to rx_free an SKB is allocated for the slot.
1129 * Also restock the Rx queue via iwl3945_rx_queue_restock.
1130 * This is called as a scheduled work item (except for during initialization)
1132 static void iwl3945_rx_allocate(struct iwl_priv *priv, gfp_t priority)
1134 struct iwl_rx_queue *rxq = &priv->rxq;
1135 struct list_head *element;
1136 struct iwl_rx_mem_buffer *rxb;
1137 struct sk_buff *skb;
1138 unsigned long flags;
1141 spin_lock_irqsave(&rxq->lock, flags);
1143 if (list_empty(&rxq->rx_used)) {
1144 spin_unlock_irqrestore(&rxq->lock, flags);
1147 spin_unlock_irqrestore(&rxq->lock, flags);
1149 if (rxq->free_count > RX_LOW_WATERMARK)
1150 priority |= __GFP_NOWARN;
1151 /* Alloc a new receive buffer */
1152 skb = alloc_skb(priv->hw_params.rx_buf_size, priority);
1154 if (net_ratelimit())
1155 IWL_DEBUG_INFO(priv, "Failed to allocate SKB buffer.\n");
1156 if ((rxq->free_count <= RX_LOW_WATERMARK) &&
1158 IWL_CRIT(priv, "Failed to allocate SKB buffer with %s. Only %u free buffers remaining.\n",
1159 priority == GFP_ATOMIC ? "GFP_ATOMIC" : "GFP_KERNEL",
1161 /* We don't reschedule replenish work here -- we will
1162 * call the restock method and if it still needs
1163 * more buffers it will schedule replenish */
1167 spin_lock_irqsave(&rxq->lock, flags);
1168 if (list_empty(&rxq->rx_used)) {
1169 spin_unlock_irqrestore(&rxq->lock, flags);
1170 dev_kfree_skb_any(skb);
1173 element = rxq->rx_used.next;
1174 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1176 spin_unlock_irqrestore(&rxq->lock, flags);
1180 /* If radiotap head is required, reserve some headroom here.
1181 * The physical head count is a variable rx_stats->phy_count.
1182 * We reserve 4 bytes here. Plus these extra bytes, the
1183 * headroom of the physical head should be enough for the
1184 * radiotap head that iwl3945 supported. See iwl3945_rt.
1186 skb_reserve(rxb->skb, 4);
1188 /* Get physical address of RB/SKB */
1189 rxb->real_dma_addr = pci_map_single(priv->pci_dev,
1191 priv->hw_params.rx_buf_size,
1192 PCI_DMA_FROMDEVICE);
1194 spin_lock_irqsave(&rxq->lock, flags);
1195 list_add_tail(&rxb->list, &rxq->rx_free);
1196 priv->alloc_rxb_skb++;
1198 spin_unlock_irqrestore(&rxq->lock, flags);
1202 void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1204 unsigned long flags;
1206 spin_lock_irqsave(&rxq->lock, flags);
1207 INIT_LIST_HEAD(&rxq->rx_free);
1208 INIT_LIST_HEAD(&rxq->rx_used);
1209 /* Fill the rx_used queue with _all_ of the Rx buffers */
1210 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
1211 /* In the reset function, these buffers may have been allocated
1212 * to an SKB, so we need to unmap and free potential storage */
1213 if (rxq->pool[i].skb != NULL) {
1214 pci_unmap_single(priv->pci_dev,
1215 rxq->pool[i].real_dma_addr,
1216 priv->hw_params.rx_buf_size,
1217 PCI_DMA_FROMDEVICE);
1218 priv->alloc_rxb_skb--;
1219 dev_kfree_skb(rxq->pool[i].skb);
1220 rxq->pool[i].skb = NULL;
1222 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
1225 /* Set us so that we have processed and used all buffers, but have
1226 * not restocked the Rx queue with fresh buffers */
1227 rxq->read = rxq->write = 0;
1228 rxq->free_count = 0;
1229 rxq->write_actual = 0;
1230 spin_unlock_irqrestore(&rxq->lock, flags);
1233 void iwl3945_rx_replenish(void *data)
1235 struct iwl_priv *priv = data;
1236 unsigned long flags;
1238 iwl3945_rx_allocate(priv, GFP_KERNEL);
1240 spin_lock_irqsave(&priv->lock, flags);
1241 iwl3945_rx_queue_restock(priv);
1242 spin_unlock_irqrestore(&priv->lock, flags);
1245 static void iwl3945_rx_replenish_now(struct iwl_priv *priv)
1247 iwl3945_rx_allocate(priv, GFP_ATOMIC);
1249 iwl3945_rx_queue_restock(priv);
1253 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1254 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1255 * This free routine walks the list of POOL entries and if SKB is set to
1256 * non NULL it is unmapped and freed
1258 static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1261 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
1262 if (rxq->pool[i].skb != NULL) {
1263 pci_unmap_single(priv->pci_dev,
1264 rxq->pool[i].real_dma_addr,
1265 priv->hw_params.rx_buf_size,
1266 PCI_DMA_FROMDEVICE);
1267 dev_kfree_skb(rxq->pool[i].skb);
1271 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
1273 pci_free_consistent(priv->pci_dev, sizeof(struct iwl_rb_status),
1274 rxq->rb_stts, rxq->rb_stts_dma);
1276 rxq->rb_stts = NULL;
1280 /* Convert linear signal-to-noise ratio into dB */
1281 static u8 ratio2dB[100] = {
1282 /* 0 1 2 3 4 5 6 7 8 9 */
1283 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1284 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1285 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1286 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1287 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1288 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1289 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1290 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1291 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1292 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1295 /* Calculates a relative dB value from a ratio of linear
1296 * (i.e. not dB) signal levels.
1297 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1298 int iwl3945_calc_db_from_ratio(int sig_ratio)
1300 /* 1000:1 or higher just report as 60 dB */
1301 if (sig_ratio >= 1000)
1304 /* 100:1 or higher, divide by 10 and use table,
1305 * add 20 dB to make up for divide by 10 */
1306 if (sig_ratio >= 100)
1307 return 20 + (int)ratio2dB[sig_ratio/10];
1309 /* We shouldn't see this */
1313 /* Use table for ratios 1:1 - 99:1 */
1314 return (int)ratio2dB[sig_ratio];
1317 #define PERFECT_RSSI (-20) /* dBm */
1318 #define WORST_RSSI (-95) /* dBm */
1319 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
1321 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
1322 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
1323 * about formulas used below. */
1324 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
1327 int degradation = PERFECT_RSSI - rssi_dbm;
1329 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
1330 * as indicator; formula is (signal dbm - noise dbm).
1331 * SNR at or above 40 is a great signal (100%).
1332 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
1333 * Weakest usable signal is usually 10 - 15 dB SNR. */
1335 if (rssi_dbm - noise_dbm >= 40)
1337 else if (rssi_dbm < noise_dbm)
1339 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
1341 /* Else use just the signal level.
1342 * This formula is a least squares fit of data points collected and
1343 * compared with a reference system that had a percentage (%) display
1344 * for signal quality. */
1346 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
1347 (15 * RSSI_RANGE + 62 * degradation)) /
1348 (RSSI_RANGE * RSSI_RANGE);
1352 else if (sig_qual < 1)
1359 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1361 * Uses the priv->rx_handlers callback function array to invoke
1362 * the appropriate handlers, including command responses,
1363 * frame-received notifications, and other notifications.
1365 static void iwl3945_rx_handle(struct iwl_priv *priv)
1367 struct iwl_rx_mem_buffer *rxb;
1368 struct iwl_rx_packet *pkt;
1369 struct iwl_rx_queue *rxq = &priv->rxq;
1372 unsigned long flags;
1375 int total_empty = 0;
1377 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1378 * buffer that the driver may process (last buffer filled by ucode). */
1379 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
1382 /* calculate total frames need to be restock after handling RX */
1383 total_empty = r - priv->rxq.write_actual;
1384 if (total_empty < 0)
1385 total_empty += RX_QUEUE_SIZE;
1387 if (total_empty > (RX_QUEUE_SIZE / 2))
1389 /* Rx interrupt, but nothing sent from uCode */
1391 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
1394 rxb = rxq->queue[i];
1396 /* If an RXB doesn't have a Rx queue slot associated with it,
1397 * then a bug has been introduced in the queue refilling
1398 * routines -- catch it here */
1399 BUG_ON(rxb == NULL);
1401 rxq->queue[i] = NULL;
1403 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
1404 priv->hw_params.rx_buf_size,
1405 PCI_DMA_FROMDEVICE);
1406 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1408 /* Reclaim a command buffer only if this packet is a response
1409 * to a (driver-originated) command.
1410 * If the packet (e.g. Rx frame) originated from uCode,
1411 * there is no command buffer to reclaim.
1412 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1413 * but apparently a few don't get set; catch them here. */
1414 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1415 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1416 (pkt->hdr.cmd != REPLY_TX);
1418 /* Based on type of command response or notification,
1419 * handle those that need handling via function in
1420 * rx_handlers table. See iwl3945_setup_rx_handlers() */
1421 if (priv->rx_handlers[pkt->hdr.cmd]) {
1422 IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r, i,
1423 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1424 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1425 priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
1427 /* No handling needed */
1428 IWL_DEBUG_RX(priv, "r %d i %d No handler needed for %s, 0x%02x\n",
1429 r, i, get_cmd_string(pkt->hdr.cmd),
1434 /* Invoke any callbacks, transfer the skb to caller, and
1435 * fire off the (possibly) blocking iwl_send_cmd()
1436 * as we reclaim the driver command queue */
1437 if (rxb && rxb->skb)
1438 iwl_tx_cmd_complete(priv, rxb);
1440 IWL_WARN(priv, "Claim null rxb?\n");
1443 /* For now we just don't re-use anything. We can tweak this
1444 * later to try and re-use notification packets and SKBs that
1445 * fail to Rx correctly */
1446 if (rxb->skb != NULL) {
1447 priv->alloc_rxb_skb--;
1448 dev_kfree_skb_any(rxb->skb);
1452 spin_lock_irqsave(&rxq->lock, flags);
1453 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1454 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 static 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);
1556 #define EVENT_START_OFFSET (6 * sizeof(u32))
1559 * iwl3945_print_event_log - Dump error event log to syslog
1562 static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
1563 u32 num_events, u32 mode)
1566 u32 base; /* SRAM byte address of event log header */
1567 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1568 u32 ptr; /* SRAM byte address of log data */
1569 u32 ev, time, data; /* event log data */
1571 if (num_events == 0)
1574 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1577 event_size = 2 * sizeof(u32);
1579 event_size = 3 * sizeof(u32);
1581 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1583 /* "time" is actually "data" for mode 0 (no timestamp).
1584 * place event id # at far right for easier visual parsing. */
1585 for (i = 0; i < num_events; i++) {
1586 ev = iwl_read_targ_mem(priv, ptr);
1588 time = iwl_read_targ_mem(priv, ptr);
1592 IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
1594 data = iwl_read_targ_mem(priv, ptr);
1596 IWL_ERR(priv, "%010u\t0x%08x\t%04u\n", time, data, ev);
1601 static void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
1603 u32 base; /* SRAM byte address of event log header */
1604 u32 capacity; /* event log capacity in # entries */
1605 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1606 u32 num_wraps; /* # times uCode wrapped to top of log */
1607 u32 next_entry; /* index of next entry to be written by uCode */
1608 u32 size; /* # entries that we'll print */
1610 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1611 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1612 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1616 /* event log header */
1617 capacity = iwl_read_targ_mem(priv, base);
1618 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1619 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1620 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1622 size = num_wraps ? capacity : next_entry;
1624 /* bail out if nothing in log */
1626 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1630 IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1633 /* if uCode has wrapped back to top of log, start at the oldest entry,
1634 * i.e the next one that uCode would fill. */
1636 iwl3945_print_event_log(priv, next_entry,
1637 capacity - next_entry, mode);
1639 /* (then/else) start at top of log */
1640 iwl3945_print_event_log(priv, 0, next_entry, mode);
1644 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
1646 u32 inta, handled = 0;
1648 unsigned long flags;
1649 #ifdef CONFIG_IWLWIFI_DEBUG
1653 spin_lock_irqsave(&priv->lock, flags);
1655 /* Ack/clear/reset pending uCode interrupts.
1656 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1657 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1658 inta = iwl_read32(priv, CSR_INT);
1659 iwl_write32(priv, CSR_INT, inta);
1661 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1662 * Any new interrupts that happen after this, either while we're
1663 * in this tasklet, or later, will show up in next ISR/tasklet. */
1664 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1665 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1667 #ifdef CONFIG_IWLWIFI_DEBUG
1668 if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1669 /* just for debug */
1670 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1671 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1672 inta, inta_mask, inta_fh);
1676 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1677 * atomic, make sure that inta covers all the interrupts that
1678 * we've discovered, even if FH interrupt came in just after
1679 * reading CSR_INT. */
1680 if (inta_fh & CSR39_FH_INT_RX_MASK)
1681 inta |= CSR_INT_BIT_FH_RX;
1682 if (inta_fh & CSR39_FH_INT_TX_MASK)
1683 inta |= CSR_INT_BIT_FH_TX;
1685 /* Now service all interrupt bits discovered above. */
1686 if (inta & CSR_INT_BIT_HW_ERR) {
1687 IWL_ERR(priv, "Hardware error detected. Restarting.\n");
1689 /* Tell the device to stop sending interrupts */
1690 iwl_disable_interrupts(priv);
1692 priv->isr_stats.hw++;
1693 iwl_irq_handle_error(priv);
1695 handled |= CSR_INT_BIT_HW_ERR;
1697 spin_unlock_irqrestore(&priv->lock, flags);
1702 #ifdef CONFIG_IWLWIFI_DEBUG
1703 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1704 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1705 if (inta & CSR_INT_BIT_SCD) {
1706 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1707 "the frame/frames.\n");
1708 priv->isr_stats.sch++;
1711 /* Alive notification via Rx interrupt will do the real work */
1712 if (inta & CSR_INT_BIT_ALIVE) {
1713 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1714 priv->isr_stats.alive++;
1718 /* Safely ignore these bits for debug checks below */
1719 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1721 /* Error detected by uCode */
1722 if (inta & CSR_INT_BIT_SW_ERR) {
1723 IWL_ERR(priv, "Microcode SW error detected. "
1724 "Restarting 0x%X.\n", inta);
1725 priv->isr_stats.sw++;
1726 priv->isr_stats.sw_err = inta;
1727 iwl_irq_handle_error(priv);
1728 handled |= CSR_INT_BIT_SW_ERR;
1731 /* uCode wakes up after power-down sleep */
1732 if (inta & CSR_INT_BIT_WAKEUP) {
1733 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1734 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1735 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1736 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1737 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1738 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1739 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1740 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1742 priv->isr_stats.wakeup++;
1743 handled |= CSR_INT_BIT_WAKEUP;
1746 /* All uCode command responses, including Tx command responses,
1747 * Rx "responses" (frame-received notification), and other
1748 * notifications from uCode come through here*/
1749 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1750 iwl3945_rx_handle(priv);
1751 priv->isr_stats.rx++;
1752 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1755 if (inta & CSR_INT_BIT_FH_TX) {
1756 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1757 priv->isr_stats.tx++;
1759 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
1760 iwl_write_direct32(priv, FH39_TCSR_CREDIT
1761 (FH39_SRVC_CHNL), 0x0);
1762 handled |= CSR_INT_BIT_FH_TX;
1765 if (inta & ~handled) {
1766 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1767 priv->isr_stats.unhandled++;
1770 if (inta & ~priv->inta_mask) {
1771 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1772 inta & ~priv->inta_mask);
1773 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
1776 /* Re-enable all interrupts */
1777 /* only Re-enable if disabled by irq */
1778 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1779 iwl_enable_interrupts(priv);
1781 #ifdef CONFIG_IWLWIFI_DEBUG
1782 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1783 inta = iwl_read32(priv, CSR_INT);
1784 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1785 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1786 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1787 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1790 spin_unlock_irqrestore(&priv->lock, flags);
1793 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
1794 enum ieee80211_band band,
1795 u8 is_active, u8 n_probes,
1796 struct iwl3945_scan_channel *scan_ch)
1798 struct ieee80211_channel *chan;
1799 const struct ieee80211_supported_band *sband;
1800 const struct iwl_channel_info *ch_info;
1801 u16 passive_dwell = 0;
1802 u16 active_dwell = 0;
1805 sband = iwl_get_hw_mode(priv, band);
1809 active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
1810 passive_dwell = iwl_get_passive_dwell_time(priv, band);
1812 if (passive_dwell <= active_dwell)
1813 passive_dwell = active_dwell + 1;
1815 for (i = 0, added = 0; i < priv->scan_request->n_channels; i++) {
1816 chan = priv->scan_request->channels[i];
1818 if (chan->band != band)
1821 scan_ch->channel = chan->hw_value;
1823 ch_info = iwl_get_channel_info(priv, band, scan_ch->channel);
1824 if (!is_channel_valid(ch_info)) {
1825 IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n",
1830 scan_ch->active_dwell = cpu_to_le16(active_dwell);
1831 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
1832 /* If passive , set up for auto-switch
1833 * and use long active_dwell time.
1835 if (!is_active || is_channel_passive(ch_info) ||
1836 (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
1837 scan_ch->type = 0; /* passive */
1838 if (IWL_UCODE_API(priv->ucode_ver) == 1)
1839 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
1841 scan_ch->type = 1; /* active */
1844 /* Set direct probe bits. These may be used both for active
1845 * scan channels (probes gets sent right away),
1846 * or for passive channels (probes get se sent only after
1847 * hearing clear Rx packet).*/
1848 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
1850 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1852 /* uCode v1 does not allow setting direct probe bits on
1853 * passive channel. */
1854 if ((scan_ch->type & 1) && n_probes)
1855 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1858 /* Set txpower levels to defaults */
1859 scan_ch->tpc.dsp_atten = 110;
1860 /* scan_pwr_info->tpc.dsp_atten; */
1862 /*scan_pwr_info->tpc.tx_gain; */
1863 if (band == IEEE80211_BAND_5GHZ)
1864 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
1866 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
1867 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
1869 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
1873 IWL_DEBUG_SCAN(priv, "Scanning %d [%s %d]\n",
1875 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
1876 (scan_ch->type & 1) ?
1877 active_dwell : passive_dwell);
1883 IWL_DEBUG_SCAN(priv, "total channels to scan %d \n", added);
1887 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
1888 struct ieee80211_rate *rates)
1892 for (i = 0; i < IWL_RATE_COUNT; i++) {
1893 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
1894 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1895 rates[i].hw_value_short = i;
1897 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
1899 * If CCK != 1M then set short preamble rate flag.
1901 rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
1902 0 : IEEE80211_RATE_SHORT_PREAMBLE;
1907 /******************************************************************************
1909 * uCode download functions
1911 ******************************************************************************/
1913 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
1915 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1916 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1917 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1918 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1919 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1920 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1924 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
1925 * looking at all data.
1927 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
1934 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1936 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1937 IWL39_RTC_INST_LOWER_BOUND);
1940 for (; len > 0; len -= sizeof(u32), image++) {
1941 /* read data comes through single port, auto-incr addr */
1942 /* NOTE: Use the debugless read so we don't flood kernel log
1943 * if IWL_DL_IO is set */
1944 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1945 if (val != le32_to_cpu(*image)) {
1946 IWL_ERR(priv, "uCode INST section is invalid at "
1947 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1948 save_len - len, val, le32_to_cpu(*image));
1958 IWL_DEBUG_INFO(priv,
1959 "ucode image in INSTRUCTION memory is good\n");
1966 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
1967 * using sample data 100 bytes apart. If these sample points are good,
1968 * it's a pretty good bet that everything between them is good, too.
1970 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
1977 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1979 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
1980 /* read data comes through single port, auto-incr addr */
1981 /* NOTE: Use the debugless read so we don't flood kernel log
1982 * if IWL_DL_IO is set */
1983 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1984 i + IWL39_RTC_INST_LOWER_BOUND);
1985 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1986 if (val != le32_to_cpu(*image)) {
1987 #if 0 /* Enable this if you want to see details */
1988 IWL_ERR(priv, "uCode INST section is invalid at "
1989 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2004 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2005 * and verify its contents
2007 static int iwl3945_verify_ucode(struct iwl_priv *priv)
2014 image = (__le32 *)priv->ucode_boot.v_addr;
2015 len = priv->ucode_boot.len;
2016 rc = iwl3945_verify_inst_sparse(priv, image, len);
2018 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2022 /* Try initialize */
2023 image = (__le32 *)priv->ucode_init.v_addr;
2024 len = priv->ucode_init.len;
2025 rc = iwl3945_verify_inst_sparse(priv, image, len);
2027 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2031 /* Try runtime/protocol */
2032 image = (__le32 *)priv->ucode_code.v_addr;
2033 len = priv->ucode_code.len;
2034 rc = iwl3945_verify_inst_sparse(priv, image, len);
2036 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2040 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2042 /* Since nothing seems to match, show first several data entries in
2043 * instruction SRAM, so maybe visual inspection will give a clue.
2044 * Selection of bootstrap image (vs. other images) is arbitrary. */
2045 image = (__le32 *)priv->ucode_boot.v_addr;
2046 len = priv->ucode_boot.len;
2047 rc = iwl3945_verify_inst_full(priv, image, len);
2052 static void iwl3945_nic_start(struct iwl_priv *priv)
2054 /* Remove all resets to allow NIC to operate */
2055 iwl_write32(priv, CSR_RESET, 0);
2059 * iwl3945_read_ucode - Read uCode images from disk file.
2061 * Copy into buffers for card to fetch via bus-mastering
2063 static int iwl3945_read_ucode(struct iwl_priv *priv)
2065 const struct iwl_ucode_header *ucode;
2066 int ret = -EINVAL, index;
2067 const struct firmware *ucode_raw;
2068 /* firmware file name contains uCode/driver compatibility version */
2069 const char *name_pre = priv->cfg->fw_name_pre;
2070 const unsigned int api_max = priv->cfg->ucode_api_max;
2071 const unsigned int api_min = priv->cfg->ucode_api_min;
2075 u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
2077 /* Ask kernel firmware_class module to get the boot firmware off disk.
2078 * request_firmware() is synchronous, file is in memory on return. */
2079 for (index = api_max; index >= api_min; index--) {
2080 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
2081 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
2083 IWL_ERR(priv, "%s firmware file req failed: %d\n",
2090 if (index < api_max)
2091 IWL_ERR(priv, "Loaded firmware %s, "
2092 "which is deprecated. "
2093 " Please use API v%u instead.\n",
2095 IWL_DEBUG_INFO(priv, "Got firmware '%s' file "
2096 "(%zd bytes) from disk\n",
2097 buf, ucode_raw->size);
2105 /* Make sure that we got at least our header! */
2106 if (ucode_raw->size < priv->cfg->ops->ucode->get_header_size(1)) {
2107 IWL_ERR(priv, "File size way too small!\n");
2112 /* Data from ucode file: header followed by uCode images */
2113 ucode = (struct iwl_ucode_header *)ucode_raw->data;
2115 priv->ucode_ver = le32_to_cpu(ucode->ver);
2116 api_ver = IWL_UCODE_API(priv->ucode_ver);
2117 inst_size = priv->cfg->ops->ucode->get_inst_size(ucode, api_ver);
2118 data_size = priv->cfg->ops->ucode->get_data_size(ucode, api_ver);
2119 init_size = priv->cfg->ops->ucode->get_init_size(ucode, api_ver);
2121 priv->cfg->ops->ucode->get_init_data_size(ucode, api_ver);
2122 boot_size = priv->cfg->ops->ucode->get_boot_size(ucode, api_ver);
2123 src = priv->cfg->ops->ucode->get_data(ucode, api_ver);
2125 /* api_ver should match the api version forming part of the
2126 * firmware filename ... but we don't check for that and only rely
2127 * on the API version read from firmware header from here on forward */
2129 if (api_ver < api_min || api_ver > api_max) {
2130 IWL_ERR(priv, "Driver unable to support your firmware API. "
2131 "Driver supports v%u, firmware is v%u.\n",
2133 priv->ucode_ver = 0;
2137 if (api_ver != api_max)
2138 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
2139 "got %u. New firmware can be obtained "
2140 "from http://www.intellinuxwireless.org.\n",
2143 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
2144 IWL_UCODE_MAJOR(priv->ucode_ver),
2145 IWL_UCODE_MINOR(priv->ucode_ver),
2146 IWL_UCODE_API(priv->ucode_ver),
2147 IWL_UCODE_SERIAL(priv->ucode_ver));
2149 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2151 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
2153 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
2155 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
2157 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
2159 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
2163 /* Verify size of file vs. image size info in file's header */
2164 if (ucode_raw->size != priv->cfg->ops->ucode->get_header_size(api_ver) +
2165 inst_size + data_size + init_size +
2166 init_data_size + boot_size) {
2168 IWL_DEBUG_INFO(priv,
2169 "uCode file size %zd does not match expected size\n",
2175 /* Verify that uCode images will fit in card's SRAM */
2176 if (inst_size > IWL39_MAX_INST_SIZE) {
2177 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
2183 if (data_size > IWL39_MAX_DATA_SIZE) {
2184 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
2189 if (init_size > IWL39_MAX_INST_SIZE) {
2190 IWL_DEBUG_INFO(priv,
2191 "uCode init instr len %d too large to fit in\n",
2196 if (init_data_size > IWL39_MAX_DATA_SIZE) {
2197 IWL_DEBUG_INFO(priv,
2198 "uCode init data len %d too large to fit in\n",
2203 if (boot_size > IWL39_MAX_BSM_SIZE) {
2204 IWL_DEBUG_INFO(priv,
2205 "uCode boot instr len %d too large to fit in\n",
2211 /* Allocate ucode buffers for card's bus-master loading ... */
2213 /* Runtime instructions and 2 copies of data:
2214 * 1) unmodified from disk
2215 * 2) backup cache for save/restore during power-downs */
2216 priv->ucode_code.len = inst_size;
2217 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2219 priv->ucode_data.len = data_size;
2220 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2222 priv->ucode_data_backup.len = data_size;
2223 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2225 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2226 !priv->ucode_data_backup.v_addr)
2229 /* Initialization instructions and data */
2230 if (init_size && init_data_size) {
2231 priv->ucode_init.len = init_size;
2232 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2234 priv->ucode_init_data.len = init_data_size;
2235 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2237 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2241 /* Bootstrap (instructions only, no data) */
2243 priv->ucode_boot.len = boot_size;
2244 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2246 if (!priv->ucode_boot.v_addr)
2250 /* Copy images into buffers for card's bus-master reads ... */
2252 /* Runtime instructions (first block of data in file) */
2254 IWL_DEBUG_INFO(priv,
2255 "Copying (but not loading) uCode instr len %zd\n", len);
2256 memcpy(priv->ucode_code.v_addr, src, len);
2259 IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2260 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2262 /* Runtime data (2nd block)
2263 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
2265 IWL_DEBUG_INFO(priv,
2266 "Copying (but not loading) uCode data len %zd\n", len);
2267 memcpy(priv->ucode_data.v_addr, src, len);
2268 memcpy(priv->ucode_data_backup.v_addr, src, len);
2271 /* Initialization instructions (3rd block) */
2274 IWL_DEBUG_INFO(priv,
2275 "Copying (but not loading) init instr len %zd\n", len);
2276 memcpy(priv->ucode_init.v_addr, src, len);
2280 /* Initialization data (4th block) */
2281 if (init_data_size) {
2282 len = init_data_size;
2283 IWL_DEBUG_INFO(priv,
2284 "Copying (but not loading) init data len %zd\n", len);
2285 memcpy(priv->ucode_init_data.v_addr, src, len);
2289 /* Bootstrap instructions (5th block) */
2291 IWL_DEBUG_INFO(priv,
2292 "Copying (but not loading) boot instr len %zd\n", len);
2293 memcpy(priv->ucode_boot.v_addr, src, len);
2295 /* We have our copies now, allow OS release its copies */
2296 release_firmware(ucode_raw);
2300 IWL_ERR(priv, "failed to allocate pci memory\n");
2302 iwl3945_dealloc_ucode_pci(priv);
2305 release_firmware(ucode_raw);
2313 * iwl3945_set_ucode_ptrs - Set uCode address location
2315 * Tell initialization uCode where to find runtime uCode.
2317 * BSM registers initially contain pointers to initialization uCode.
2318 * We need to replace them to load runtime uCode inst and data,
2319 * and to save runtime data when powering down.
2321 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
2326 /* bits 31:0 for 3945 */
2327 pinst = priv->ucode_code.p_addr;
2328 pdata = priv->ucode_data_backup.p_addr;
2330 /* Tell bootstrap uCode where to find image to load */
2331 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2332 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2333 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
2334 priv->ucode_data.len);
2336 /* Inst byte count must be last to set up, bit 31 signals uCode
2337 * that all new ptr/size info is in place */
2338 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
2339 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
2341 IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
2347 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2349 * Called after REPLY_ALIVE notification received from "initialize" uCode.
2351 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2353 static void iwl3945_init_alive_start(struct iwl_priv *priv)
2355 /* Check alive response for "valid" sign from uCode */
2356 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
2357 /* We had an error bringing up the hardware, so take it
2358 * all the way back down so we can try again */
2359 IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n");
2363 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2364 * This is a paranoid check, because we would not have gotten the
2365 * "initialize" alive if code weren't properly loaded. */
2366 if (iwl3945_verify_ucode(priv)) {
2367 /* Runtime instruction load was bad;
2368 * take it all the way back down so we can try again */
2369 IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
2373 /* Send pointers to protocol/runtime uCode image ... init code will
2374 * load and launch runtime uCode, which will send us another "Alive"
2376 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
2377 if (iwl3945_set_ucode_ptrs(priv)) {
2378 /* Runtime instruction load won't happen;
2379 * take it all the way back down so we can try again */
2380 IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
2386 queue_work(priv->workqueue, &priv->restart);
2390 * iwl3945_alive_start - called after REPLY_ALIVE notification received
2391 * from protocol/runtime uCode (initialization uCode's
2392 * Alive gets handled by iwl3945_init_alive_start()).
2394 static void iwl3945_alive_start(struct iwl_priv *priv)
2396 int thermal_spin = 0;
2399 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2401 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2402 /* We had an error bringing up the hardware, so take it
2403 * all the way back down so we can try again */
2404 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2408 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2409 * This is a paranoid check, because we would not have gotten the
2410 * "runtime" alive if code weren't properly loaded. */
2411 if (iwl3945_verify_ucode(priv)) {
2412 /* Runtime instruction load was bad;
2413 * take it all the way back down so we can try again */
2414 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2418 iwl_clear_stations_table(priv);
2420 rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
2421 IWL_DEBUG_INFO(priv, "RFKILL status: 0x%x\n", rfkill);
2424 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2425 /* if RFKILL is not on, then wait for thermal
2426 * sensor in adapter to kick in */
2427 while (iwl3945_hw_get_temperature(priv) == 0) {
2433 IWL_DEBUG_INFO(priv, "Thermal calibration took %dus\n",
2436 set_bit(STATUS_RF_KILL_HW, &priv->status);
2438 /* After the ALIVE response, we can send commands to 3945 uCode */
2439 set_bit(STATUS_ALIVE, &priv->status);
2441 if (iwl_is_rfkill(priv))
2444 ieee80211_wake_queues(priv->hw);
2446 priv->active_rate = priv->rates_mask;
2447 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2449 iwl_power_update_mode(priv, false);
2451 if (iwl_is_associated(priv)) {
2452 struct iwl3945_rxon_cmd *active_rxon =
2453 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
2455 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2456 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2458 /* Initialize our rx_config data */
2459 iwl_connection_init_rx_config(priv, priv->iw_mode);
2462 /* Configure Bluetooth device coexistence support */
2463 iwl_send_bt_config(priv);
2465 /* Configure the adapter for unassociated operation */
2466 iwlcore_commit_rxon(priv);
2468 iwl3945_reg_txpower_periodic(priv);
2470 iwl3945_led_register(priv);
2472 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2473 set_bit(STATUS_READY, &priv->status);
2474 wake_up_interruptible(&priv->wait_command_queue);
2476 /* reassociate for ADHOC mode */
2477 if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
2478 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
2481 iwl_mac_beacon_update(priv->hw, beacon);
2484 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2485 iwl_set_mode(priv, priv->iw_mode);
2490 queue_work(priv->workqueue, &priv->restart);
2493 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
2495 static void __iwl3945_down(struct iwl_priv *priv)
2497 unsigned long flags;
2498 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2499 struct ieee80211_conf *conf = NULL;
2501 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2503 conf = ieee80211_get_hw_conf(priv->hw);
2506 set_bit(STATUS_EXIT_PENDING, &priv->status);
2508 iwl3945_led_unregister(priv);
2509 iwl_clear_stations_table(priv);
2511 /* Unblock any waiting calls */
2512 wake_up_interruptible_all(&priv->wait_command_queue);
2514 /* Wipe out the EXIT_PENDING status bit if we are not actually
2515 * exiting the module */
2517 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2519 /* stop and reset the on-board processor */
2520 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2522 /* tell the device to stop sending interrupts */
2523 spin_lock_irqsave(&priv->lock, flags);
2524 iwl_disable_interrupts(priv);
2525 spin_unlock_irqrestore(&priv->lock, flags);
2526 iwl_synchronize_irq(priv);
2528 if (priv->mac80211_registered)
2529 ieee80211_stop_queues(priv->hw);
2531 /* If we have not previously called iwl3945_init() then
2532 * clear all bits but the RF Kill bits and return */
2533 if (!iwl_is_init(priv)) {
2534 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2536 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2537 STATUS_GEO_CONFIGURED |
2538 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2539 STATUS_EXIT_PENDING;
2543 /* ...otherwise clear out all the status bits but the RF Kill
2544 * bit and continue taking the NIC down. */
2545 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2547 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2548 STATUS_GEO_CONFIGURED |
2549 test_bit(STATUS_FW_ERROR, &priv->status) <<
2551 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2552 STATUS_EXIT_PENDING;
2554 priv->cfg->ops->lib->apm_ops.reset(priv);
2555 spin_lock_irqsave(&priv->lock, flags);
2556 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2557 spin_unlock_irqrestore(&priv->lock, flags);
2559 iwl3945_hw_txq_ctx_stop(priv);
2560 iwl3945_hw_rxq_stop(priv);
2562 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2563 APMG_CLK_VAL_DMA_CLK_RQT);
2568 priv->cfg->ops->lib->apm_ops.stop(priv);
2570 priv->cfg->ops->lib->apm_ops.reset(priv);
2573 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2575 if (priv->ibss_beacon)
2576 dev_kfree_skb(priv->ibss_beacon);
2577 priv->ibss_beacon = NULL;
2579 /* clear out any free frames */
2580 iwl3945_clear_free_frames(priv);
2583 static void iwl3945_down(struct iwl_priv *priv)
2585 mutex_lock(&priv->mutex);
2586 __iwl3945_down(priv);
2587 mutex_unlock(&priv->mutex);
2589 iwl3945_cancel_deferred_work(priv);
2592 #define MAX_HW_RESTARTS 5
2594 static int __iwl3945_up(struct iwl_priv *priv)
2598 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2599 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2603 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2604 IWL_ERR(priv, "ucode not available for device bring up\n");
2608 /* If platform's RF_KILL switch is NOT set to KILL */
2609 if (iwl_read32(priv, CSR_GP_CNTRL) &
2610 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2611 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2613 set_bit(STATUS_RF_KILL_HW, &priv->status);
2614 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2618 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2620 rc = iwl3945_hw_nic_init(priv);
2622 IWL_ERR(priv, "Unable to int nic\n");
2626 /* make sure rfkill handshake bits are cleared */
2627 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2628 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2629 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2631 /* clear (again), then enable host interrupts */
2632 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2633 iwl_enable_interrupts(priv);
2635 /* really make sure rfkill handshake bits are cleared */
2636 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2637 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2639 /* Copy original ucode data image from disk into backup cache.
2640 * This will be used to initialize the on-board processor's
2641 * data SRAM for a clean start when the runtime program first loads. */
2642 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2643 priv->ucode_data.len);
2645 /* We return success when we resume from suspend and rf_kill is on. */
2646 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
2649 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2651 iwl_clear_stations_table(priv);
2653 /* load bootstrap state machine,
2654 * load bootstrap program into processor's memory,
2655 * prepare to load the "initialize" uCode */
2656 priv->cfg->ops->lib->load_ucode(priv);
2660 "Unable to set up bootstrap uCode: %d\n", rc);
2664 /* start card; "initialize" will load runtime ucode */
2665 iwl3945_nic_start(priv);
2667 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2672 set_bit(STATUS_EXIT_PENDING, &priv->status);
2673 __iwl3945_down(priv);
2674 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2676 /* tried to restart and config the device for as long as our
2677 * patience could withstand */
2678 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2683 /*****************************************************************************
2685 * Workqueue callbacks
2687 *****************************************************************************/
2689 static void iwl3945_bg_init_alive_start(struct work_struct *data)
2691 struct iwl_priv *priv =
2692 container_of(data, struct iwl_priv, init_alive_start.work);
2694 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2697 mutex_lock(&priv->mutex);
2698 iwl3945_init_alive_start(priv);
2699 mutex_unlock(&priv->mutex);
2702 static void iwl3945_bg_alive_start(struct work_struct *data)
2704 struct iwl_priv *priv =
2705 container_of(data, struct iwl_priv, alive_start.work);
2707 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2710 mutex_lock(&priv->mutex);
2711 iwl3945_alive_start(priv);
2712 mutex_unlock(&priv->mutex);
2715 static void iwl3945_rfkill_poll(struct work_struct *data)
2717 struct iwl_priv *priv =
2718 container_of(data, struct iwl_priv, rfkill_poll.work);
2720 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2721 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2723 set_bit(STATUS_RF_KILL_HW, &priv->status);
2725 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
2726 test_bit(STATUS_RF_KILL_HW, &priv->status));
2728 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
2729 round_jiffies_relative(2 * HZ));
2733 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
2734 static void iwl3945_bg_request_scan(struct work_struct *data)
2736 struct iwl_priv *priv =
2737 container_of(data, struct iwl_priv, request_scan);
2738 struct iwl_host_cmd cmd = {
2739 .id = REPLY_SCAN_CMD,
2740 .len = sizeof(struct iwl3945_scan_cmd),
2741 .flags = CMD_SIZE_HUGE,
2744 struct iwl3945_scan_cmd *scan;
2745 struct ieee80211_conf *conf = NULL;
2747 enum ieee80211_band band;
2748 bool is_active = false;
2750 conf = ieee80211_get_hw_conf(priv->hw);
2752 mutex_lock(&priv->mutex);
2754 cancel_delayed_work(&priv->scan_check);
2756 if (!iwl_is_ready(priv)) {
2757 IWL_WARN(priv, "request scan called when driver not ready.\n");
2761 /* Make sure the scan wasn't canceled before this queued work
2762 * was given the chance to run... */
2763 if (!test_bit(STATUS_SCANNING, &priv->status))
2766 /* This should never be called or scheduled if there is currently
2767 * a scan active in the hardware. */
2768 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
2769 IWL_DEBUG_INFO(priv, "Multiple concurrent scan requests "
2770 "Ignoring second request.\n");
2775 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2776 IWL_DEBUG_SCAN(priv, "Aborting scan due to device shutdown\n");
2780 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2782 "Scan request while abort pending. Queuing.\n");
2786 if (iwl_is_rfkill(priv)) {
2787 IWL_DEBUG_HC(priv, "Aborting scan due to RF Kill activation\n");
2791 if (!test_bit(STATUS_READY, &priv->status)) {
2793 "Scan request while uninitialized. Queuing.\n");
2797 if (!priv->scan_bands) {
2798 IWL_DEBUG_HC(priv, "Aborting scan due to no requested bands\n");
2803 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
2804 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
2811 memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
2813 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
2814 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
2816 if (iwl_is_associated(priv)) {
2819 u32 suspend_time = 100;
2820 u32 scan_suspend_time = 100;
2821 unsigned long flags;
2823 IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
2825 spin_lock_irqsave(&priv->lock, flags);
2826 interval = priv->beacon_int;
2827 spin_unlock_irqrestore(&priv->lock, flags);
2829 scan->suspend_time = 0;
2830 scan->max_out_time = cpu_to_le32(200 * 1024);
2832 interval = suspend_time;
2834 * suspend time format:
2835 * 0-19: beacon interval in usec (time before exec.)
2837 * 24-31: number of beacons (suspend between channels)
2840 extra = (suspend_time / interval) << 24;
2841 scan_suspend_time = 0xFF0FFFFF &
2842 (extra | ((suspend_time % interval) * 1024));
2844 scan->suspend_time = cpu_to_le32(scan_suspend_time);
2845 IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
2846 scan_suspend_time, interval);
2849 if (priv->scan_request->n_ssids) {
2851 IWL_DEBUG_SCAN(priv, "Kicking off active scan\n");
2852 for (i = 0; i < priv->scan_request->n_ssids; i++) {
2853 /* always does wildcard anyway */
2854 if (!priv->scan_request->ssids[i].ssid_len)
2856 scan->direct_scan[p].id = WLAN_EID_SSID;
2857 scan->direct_scan[p].len =
2858 priv->scan_request->ssids[i].ssid_len;
2859 memcpy(scan->direct_scan[p].ssid,
2860 priv->scan_request->ssids[i].ssid,
2861 priv->scan_request->ssids[i].ssid_len);
2867 IWL_DEBUG_SCAN(priv, "Kicking off passive scan.\n");
2869 /* We don't build a direct scan probe request; the uCode will do
2870 * that based on the direct_mask added to each channel entry */
2871 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
2872 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
2873 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2875 /* flags + rate selection */
2877 if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
2878 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
2879 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
2880 scan->good_CRC_th = 0;
2881 band = IEEE80211_BAND_2GHZ;
2882 } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
2883 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
2885 * If active scaning is requested but a certain channel
2886 * is marked passive, we can do active scanning if we
2887 * detect transmissions.
2889 scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH : 0;
2890 band = IEEE80211_BAND_5GHZ;
2892 IWL_WARN(priv, "Invalid scan band count\n");
2896 scan->tx_cmd.len = cpu_to_le16(
2897 iwl_fill_probe_req(priv,
2898 (struct ieee80211_mgmt *)scan->data,
2899 priv->scan_request->ie,
2900 priv->scan_request->ie_len,
2901 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
2903 /* select Rx antennas */
2904 scan->flags |= iwl3945_get_antenna_flags(priv);
2906 if (iwl_is_monitor_mode(priv))
2907 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
2909 scan->channel_count =
2910 iwl3945_get_channels_for_scan(priv, band, is_active, n_probes,
2911 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
2913 if (scan->channel_count == 0) {
2914 IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
2918 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
2919 scan->channel_count * sizeof(struct iwl3945_scan_channel);
2921 scan->len = cpu_to_le16(cmd.len);
2923 set_bit(STATUS_SCAN_HW, &priv->status);
2924 rc = iwl_send_cmd_sync(priv, &cmd);
2928 queue_delayed_work(priv->workqueue, &priv->scan_check,
2929 IWL_SCAN_CHECK_WATCHDOG);
2931 mutex_unlock(&priv->mutex);
2935 /* can not perform scan make sure we clear scanning
2936 * bits from status so next scan request can be performed.
2937 * if we dont clear scanning status bit here all next scan
2940 clear_bit(STATUS_SCAN_HW, &priv->status);
2941 clear_bit(STATUS_SCANNING, &priv->status);
2943 /* inform mac80211 scan aborted */
2944 queue_work(priv->workqueue, &priv->scan_completed);
2945 mutex_unlock(&priv->mutex);
2948 static void iwl3945_bg_up(struct work_struct *data)
2950 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2952 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2955 mutex_lock(&priv->mutex);
2957 mutex_unlock(&priv->mutex);
2960 static void iwl3945_bg_restart(struct work_struct *data)
2962 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2964 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2967 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
2968 mutex_lock(&priv->mutex);
2971 mutex_unlock(&priv->mutex);
2973 ieee80211_restart_hw(priv->hw);
2976 queue_work(priv->workqueue, &priv->up);
2980 static void iwl3945_bg_rx_replenish(struct work_struct *data)
2982 struct iwl_priv *priv =
2983 container_of(data, struct iwl_priv, rx_replenish);
2985 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2988 mutex_lock(&priv->mutex);
2989 iwl3945_rx_replenish(priv);
2990 mutex_unlock(&priv->mutex);
2993 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2995 void iwl3945_post_associate(struct iwl_priv *priv)
2998 struct ieee80211_conf *conf = NULL;
3000 if (priv->iw_mode == NL80211_IFTYPE_AP) {
3001 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
3006 IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3007 priv->assoc_id, priv->active_rxon.bssid_addr);
3009 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3012 if (!priv->vif || !priv->is_open)
3015 iwl_scan_cancel_timeout(priv, 200);
3017 conf = ieee80211_get_hw_conf(priv->hw);
3019 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3020 iwlcore_commit_rxon(priv);
3022 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3023 iwl_setup_rxon_timing(priv);
3024 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3025 sizeof(priv->rxon_timing), &priv->rxon_timing);
3027 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3028 "Attempting to continue.\n");
3030 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3032 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3034 IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3035 priv->assoc_id, priv->beacon_int);
3037 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3038 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3040 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3042 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3043 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3044 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3046 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3048 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3049 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3053 iwlcore_commit_rxon(priv);
3055 switch (priv->iw_mode) {
3056 case NL80211_IFTYPE_STATION:
3057 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
3060 case NL80211_IFTYPE_ADHOC:
3063 iwl_add_station(priv, priv->bssid, 0, CMD_SYNC, NULL);
3064 iwl3945_sync_sta(priv, IWL_STA_ID,
3065 (priv->band == IEEE80211_BAND_5GHZ) ?
3066 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
3068 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
3069 iwl3945_send_beacon_cmd(priv);
3074 IWL_ERR(priv, "%s Should not be called in %d mode\n",
3075 __func__, priv->iw_mode);
3079 iwl_activate_qos(priv, 0);
3081 /* we have just associated, don't start scan too early */
3082 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
3085 /*****************************************************************************
3087 * mac80211 entry point functions
3089 *****************************************************************************/
3091 #define UCODE_READY_TIMEOUT (2 * HZ)
3093 static int iwl3945_mac_start(struct ieee80211_hw *hw)
3095 struct iwl_priv *priv = hw->priv;
3098 IWL_DEBUG_MAC80211(priv, "enter\n");
3100 /* we should be verifying the device is ready to be opened */
3101 mutex_lock(&priv->mutex);
3103 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3104 * ucode filename and max sizes are card-specific. */
3106 if (!priv->ucode_code.len) {
3107 ret = iwl3945_read_ucode(priv);
3109 IWL_ERR(priv, "Could not read microcode: %d\n", ret);
3110 mutex_unlock(&priv->mutex);
3111 goto out_release_irq;
3115 ret = __iwl3945_up(priv);
3117 mutex_unlock(&priv->mutex);
3120 goto out_release_irq;
3122 IWL_DEBUG_INFO(priv, "Start UP work.\n");
3124 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3125 * mac80211 will not be run successfully. */
3126 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3127 test_bit(STATUS_READY, &priv->status),
3128 UCODE_READY_TIMEOUT);
3130 if (!test_bit(STATUS_READY, &priv->status)) {
3132 "Wait for START_ALIVE timeout after %dms.\n",
3133 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3135 goto out_release_irq;
3139 /* ucode is running and will send rfkill notifications,
3140 * no need to poll the killswitch state anymore */
3141 cancel_delayed_work(&priv->rfkill_poll);
3144 IWL_DEBUG_MAC80211(priv, "leave\n");
3149 IWL_DEBUG_MAC80211(priv, "leave - failed\n");
3153 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
3155 struct iwl_priv *priv = hw->priv;
3157 IWL_DEBUG_MAC80211(priv, "enter\n");
3159 if (!priv->is_open) {
3160 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
3166 if (iwl_is_ready_rf(priv)) {
3167 /* stop mac, cancel any scan request and clear
3168 * RXON_FILTER_ASSOC_MSK BIT
3170 mutex_lock(&priv->mutex);
3171 iwl_scan_cancel_timeout(priv, 100);
3172 mutex_unlock(&priv->mutex);
3177 flush_workqueue(priv->workqueue);
3179 /* start polling the killswitch state again */
3180 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
3181 round_jiffies_relative(2 * HZ));
3183 IWL_DEBUG_MAC80211(priv, "leave\n");
3186 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3188 struct iwl_priv *priv = hw->priv;
3190 IWL_DEBUG_MAC80211(priv, "enter\n");
3192 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3193 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3195 if (iwl3945_tx_skb(priv, skb))
3196 dev_kfree_skb_any(skb);
3198 IWL_DEBUG_MAC80211(priv, "leave\n");
3199 return NETDEV_TX_OK;
3202 void iwl3945_config_ap(struct iwl_priv *priv)
3206 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3209 /* The following should be done only at AP bring up */
3210 if (!(iwl_is_associated(priv))) {
3212 /* RXON - unassoc (to set timing command) */
3213 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3214 iwlcore_commit_rxon(priv);
3217 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3218 iwl_setup_rxon_timing(priv);
3219 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3220 sizeof(priv->rxon_timing),
3221 &priv->rxon_timing);
3223 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3224 "Attempting to continue.\n");
3226 /* FIXME: what should be the assoc_id for AP? */
3227 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3228 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3229 priv->staging_rxon.flags |=
3230 RXON_FLG_SHORT_PREAMBLE_MSK;
3232 priv->staging_rxon.flags &=
3233 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3235 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3236 if (priv->assoc_capability &
3237 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3238 priv->staging_rxon.flags |=
3239 RXON_FLG_SHORT_SLOT_MSK;
3241 priv->staging_rxon.flags &=
3242 ~RXON_FLG_SHORT_SLOT_MSK;
3244 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3245 priv->staging_rxon.flags &=
3246 ~RXON_FLG_SHORT_SLOT_MSK;
3248 /* restore RXON assoc */
3249 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3250 iwlcore_commit_rxon(priv);
3251 iwl_add_station(priv, iwl_bcast_addr, 0, CMD_SYNC, NULL);
3253 iwl3945_send_beacon_cmd(priv);
3255 /* FIXME - we need to add code here to detect a totally new
3256 * configuration, reset the AP, unassoc, rxon timing, assoc,
3257 * clear sta table, add BCAST sta... */
3260 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3261 struct ieee80211_vif *vif,
3262 struct ieee80211_sta *sta,
3263 struct ieee80211_key_conf *key)
3265 struct iwl_priv *priv = hw->priv;
3268 u8 sta_id = IWL_INVALID_STATION;
3271 IWL_DEBUG_MAC80211(priv, "enter\n");
3273 if (iwl3945_mod_params.sw_crypto) {
3274 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
3278 addr = sta ? sta->addr : iwl_bcast_addr;
3279 static_key = !iwl_is_associated(priv);
3282 sta_id = iwl_find_station(priv, addr);
3283 if (sta_id == IWL_INVALID_STATION) {
3284 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
3290 mutex_lock(&priv->mutex);
3291 iwl_scan_cancel_timeout(priv, 100);
3292 mutex_unlock(&priv->mutex);
3297 ret = iwl3945_set_static_key(priv, key);
3299 ret = iwl3945_set_dynamic_key(priv, key, sta_id);
3300 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
3304 ret = iwl3945_remove_static_key(priv);
3306 ret = iwl3945_clear_sta_key_info(priv, sta_id);
3307 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
3313 IWL_DEBUG_MAC80211(priv, "leave\n");
3318 /*****************************************************************************
3322 *****************************************************************************/
3324 #ifdef CONFIG_IWLWIFI_DEBUG
3327 * The following adds a new attribute to the sysfs representation
3328 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3329 * used for controlling the debug level.
3331 * See the level definitions in iwl for details.
3333 * The debug_level being managed using sysfs below is a per device debug
3334 * level that is used instead of the global debug level if it (the per
3335 * device debug level) is set.
3337 static ssize_t show_debug_level(struct device *d,
3338 struct device_attribute *attr, char *buf)
3340 struct iwl_priv *priv = dev_get_drvdata(d);
3341 return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
3343 static ssize_t store_debug_level(struct device *d,
3344 struct device_attribute *attr,
3345 const char *buf, size_t count)
3347 struct iwl_priv *priv = dev_get_drvdata(d);
3351 ret = strict_strtoul(buf, 0, &val);
3353 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
3355 priv->debug_level = val;
3356 if (iwl_alloc_traffic_mem(priv))
3358 "Not enough memory to generate traffic log\n");
3360 return strnlen(buf, count);
3363 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3364 show_debug_level, store_debug_level);
3366 #endif /* CONFIG_IWLWIFI_DEBUG */
3368 static ssize_t show_temperature(struct device *d,
3369 struct device_attribute *attr, char *buf)
3371 struct iwl_priv *priv = dev_get_drvdata(d);
3373 if (!iwl_is_alive(priv))
3376 return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
3379 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3381 static ssize_t show_tx_power(struct device *d,
3382 struct device_attribute *attr, char *buf)
3384 struct iwl_priv *priv = dev_get_drvdata(d);
3385 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3388 static ssize_t store_tx_power(struct device *d,
3389 struct device_attribute *attr,
3390 const char *buf, size_t count)
3392 struct iwl_priv *priv = dev_get_drvdata(d);
3393 char *p = (char *)buf;
3396 val = simple_strtoul(p, &p, 10);
3398 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
3400 iwl3945_hw_reg_set_txpower(priv, val);
3405 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3407 static ssize_t show_flags(struct device *d,
3408 struct device_attribute *attr, char *buf)
3410 struct iwl_priv *priv = dev_get_drvdata(d);
3412 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3415 static ssize_t store_flags(struct device *d,
3416 struct device_attribute *attr,
3417 const char *buf, size_t count)
3419 struct iwl_priv *priv = dev_get_drvdata(d);
3420 u32 flags = simple_strtoul(buf, NULL, 0);
3422 mutex_lock(&priv->mutex);
3423 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3424 /* Cancel any currently running scans... */
3425 if (iwl_scan_cancel_timeout(priv, 100))
3426 IWL_WARN(priv, "Could not cancel scan.\n");
3428 IWL_DEBUG_INFO(priv, "Committing rxon.flags = 0x%04X\n",
3430 priv->staging_rxon.flags = cpu_to_le32(flags);
3431 iwlcore_commit_rxon(priv);
3434 mutex_unlock(&priv->mutex);
3439 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3441 static ssize_t show_filter_flags(struct device *d,
3442 struct device_attribute *attr, char *buf)
3444 struct iwl_priv *priv = dev_get_drvdata(d);
3446 return sprintf(buf, "0x%04X\n",
3447 le32_to_cpu(priv->active_rxon.filter_flags));
3450 static ssize_t store_filter_flags(struct device *d,
3451 struct device_attribute *attr,
3452 const char *buf, size_t count)
3454 struct iwl_priv *priv = dev_get_drvdata(d);
3455 u32 filter_flags = simple_strtoul(buf, NULL, 0);
3457 mutex_lock(&priv->mutex);
3458 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3459 /* Cancel any currently running scans... */
3460 if (iwl_scan_cancel_timeout(priv, 100))
3461 IWL_WARN(priv, "Could not cancel scan.\n");
3463 IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
3464 "0x%04X\n", filter_flags);
3465 priv->staging_rxon.filter_flags =
3466 cpu_to_le32(filter_flags);
3467 iwlcore_commit_rxon(priv);
3470 mutex_unlock(&priv->mutex);
3475 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3476 store_filter_flags);
3478 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3480 static ssize_t show_measurement(struct device *d,
3481 struct device_attribute *attr, char *buf)
3483 struct iwl_priv *priv = dev_get_drvdata(d);
3484 struct iwl_spectrum_notification measure_report;
3485 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3486 u8 *data = (u8 *)&measure_report;
3487 unsigned long flags;
3489 spin_lock_irqsave(&priv->lock, flags);
3490 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3491 spin_unlock_irqrestore(&priv->lock, flags);
3494 memcpy(&measure_report, &priv->measure_report, size);
3495 priv->measurement_status = 0;
3496 spin_unlock_irqrestore(&priv->lock, flags);
3498 while (size && (PAGE_SIZE - len)) {
3499 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3500 PAGE_SIZE - len, 1);
3502 if (PAGE_SIZE - len)
3506 size -= min(size, 16U);
3512 static ssize_t store_measurement(struct device *d,
3513 struct device_attribute *attr,
3514 const char *buf, size_t count)
3516 struct iwl_priv *priv = dev_get_drvdata(d);
3517 struct ieee80211_measurement_params params = {
3518 .channel = le16_to_cpu(priv->active_rxon.channel),
3519 .start_time = cpu_to_le64(priv->last_tsf),
3520 .duration = cpu_to_le16(1),
3522 u8 type = IWL_MEASURE_BASIC;
3528 strncpy(buffer, buf, min(sizeof(buffer), count));
3529 channel = simple_strtoul(p, NULL, 0);
3531 params.channel = channel;
3534 while (*p && *p != ' ')
3537 type = simple_strtoul(p + 1, NULL, 0);
3540 IWL_DEBUG_INFO(priv, "Invoking measurement of type %d on "
3541 "channel %d (for '%s')\n", type, params.channel, buf);
3542 iwl3945_get_measurement(priv, ¶ms, type);
3547 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3548 show_measurement, store_measurement);
3549 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
3551 static ssize_t store_retry_rate(struct device *d,
3552 struct device_attribute *attr,
3553 const char *buf, size_t count)
3555 struct iwl_priv *priv = dev_get_drvdata(d);
3557 priv->retry_rate = simple_strtoul(buf, NULL, 0);
3558 if (priv->retry_rate <= 0)
3559 priv->retry_rate = 1;
3564 static ssize_t show_retry_rate(struct device *d,
3565 struct device_attribute *attr, char *buf)
3567 struct iwl_priv *priv = dev_get_drvdata(d);
3568 return sprintf(buf, "%d", priv->retry_rate);
3571 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3575 static ssize_t show_channels(struct device *d,
3576 struct device_attribute *attr, char *buf)
3578 /* all this shit doesn't belong into sysfs anyway */
3582 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3584 static ssize_t show_statistics(struct device *d,
3585 struct device_attribute *attr, char *buf)
3587 struct iwl_priv *priv = dev_get_drvdata(d);
3588 u32 size = sizeof(struct iwl3945_notif_statistics);
3589 u32 len = 0, ofs = 0;
3590 u8 *data = (u8 *)&priv->statistics_39;
3593 if (!iwl_is_alive(priv))
3596 mutex_lock(&priv->mutex);
3597 rc = iwl_send_statistics_request(priv, 0);
3598 mutex_unlock(&priv->mutex);
3602 "Error sending statistics request: 0x%08X\n", rc);
3606 while (size && (PAGE_SIZE - len)) {
3607 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3608 PAGE_SIZE - len, 1);
3610 if (PAGE_SIZE - len)
3614 size -= min(size, 16U);
3620 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3622 static ssize_t show_antenna(struct device *d,
3623 struct device_attribute *attr, char *buf)
3625 struct iwl_priv *priv = dev_get_drvdata(d);
3627 if (!iwl_is_alive(priv))
3630 return sprintf(buf, "%d\n", iwl3945_mod_params.antenna);
3633 static ssize_t store_antenna(struct device *d,
3634 struct device_attribute *attr,
3635 const char *buf, size_t count)
3637 struct iwl_priv *priv __maybe_unused = dev_get_drvdata(d);
3643 if (sscanf(buf, "%1i", &ant) != 1) {
3644 IWL_DEBUG_INFO(priv, "not in hex or decimal form.\n");
3648 if ((ant >= 0) && (ant <= 2)) {
3649 IWL_DEBUG_INFO(priv, "Setting antenna select to %d.\n", ant);
3650 iwl3945_mod_params.antenna = (enum iwl3945_antenna)ant;
3652 IWL_DEBUG_INFO(priv, "Bad antenna select value %d.\n", ant);
3658 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
3660 static ssize_t show_status(struct device *d,
3661 struct device_attribute *attr, char *buf)
3663 struct iwl_priv *priv = dev_get_drvdata(d);
3664 if (!iwl_is_alive(priv))
3666 return sprintf(buf, "0x%08x\n", (int)priv->status);
3669 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3671 static ssize_t dump_error_log(struct device *d,
3672 struct device_attribute *attr,
3673 const char *buf, size_t count)
3675 struct iwl_priv *priv = dev_get_drvdata(d);
3676 char *p = (char *)buf;
3679 iwl3945_dump_nic_error_log(priv);
3681 return strnlen(buf, count);
3684 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
3686 static ssize_t dump_event_log(struct device *d,
3687 struct device_attribute *attr,
3688 const char *buf, size_t count)
3690 struct iwl_priv *priv = dev_get_drvdata(d);
3691 char *p = (char *)buf;
3694 iwl3945_dump_nic_event_log(priv);
3696 return strnlen(buf, count);
3699 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
3701 /*****************************************************************************
3703 * driver setup and tear down
3705 *****************************************************************************/
3707 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
3709 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3711 init_waitqueue_head(&priv->wait_command_queue);
3713 INIT_WORK(&priv->up, iwl3945_bg_up);
3714 INIT_WORK(&priv->restart, iwl3945_bg_restart);
3715 INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
3716 INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
3717 INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
3718 INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
3719 INIT_DELAYED_WORK(&priv->rfkill_poll, iwl3945_rfkill_poll);
3720 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
3721 INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
3722 INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
3723 INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
3725 iwl3945_hw_setup_deferred_work(priv);
3727 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3728 iwl3945_irq_tasklet, (unsigned long)priv);
3731 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
3733 iwl3945_hw_cancel_deferred_work(priv);
3735 cancel_delayed_work_sync(&priv->init_alive_start);
3736 cancel_delayed_work(&priv->scan_check);
3737 cancel_delayed_work(&priv->alive_start);
3738 cancel_work_sync(&priv->beacon_update);
3741 static struct attribute *iwl3945_sysfs_entries[] = {
3742 &dev_attr_antenna.attr,
3743 &dev_attr_channels.attr,
3744 &dev_attr_dump_errors.attr,
3745 &dev_attr_dump_events.attr,
3746 &dev_attr_flags.attr,
3747 &dev_attr_filter_flags.attr,
3748 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3749 &dev_attr_measurement.attr,
3751 &dev_attr_retry_rate.attr,
3752 &dev_attr_statistics.attr,
3753 &dev_attr_status.attr,
3754 &dev_attr_temperature.attr,
3755 &dev_attr_tx_power.attr,
3756 #ifdef CONFIG_IWLWIFI_DEBUG
3757 &dev_attr_debug_level.attr,
3762 static struct attribute_group iwl3945_attribute_group = {
3763 .name = NULL, /* put in device directory */
3764 .attrs = iwl3945_sysfs_entries,
3767 static struct ieee80211_ops iwl3945_hw_ops = {
3768 .tx = iwl3945_mac_tx,
3769 .start = iwl3945_mac_start,
3770 .stop = iwl3945_mac_stop,
3771 .add_interface = iwl_mac_add_interface,
3772 .remove_interface = iwl_mac_remove_interface,
3773 .config = iwl_mac_config,
3774 .configure_filter = iwl_configure_filter,
3775 .set_key = iwl3945_mac_set_key,
3776 .get_tx_stats = iwl_mac_get_tx_stats,
3777 .conf_tx = iwl_mac_conf_tx,
3778 .reset_tsf = iwl_mac_reset_tsf,
3779 .bss_info_changed = iwl_bss_info_changed,
3780 .hw_scan = iwl_mac_hw_scan
3783 static int iwl3945_init_drv(struct iwl_priv *priv)
3786 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
3788 priv->retry_rate = 1;
3789 priv->ibss_beacon = NULL;
3791 spin_lock_init(&priv->lock);
3792 spin_lock_init(&priv->sta_lock);
3793 spin_lock_init(&priv->hcmd_lock);
3795 INIT_LIST_HEAD(&priv->free_frames);
3797 mutex_init(&priv->mutex);
3799 /* Clear the driver's (not device's) station table */
3800 iwl_clear_stations_table(priv);
3802 priv->data_retry_limit = -1;
3803 priv->ieee_channels = NULL;
3804 priv->ieee_rates = NULL;
3805 priv->band = IEEE80211_BAND_2GHZ;
3807 priv->iw_mode = NL80211_IFTYPE_STATION;
3809 iwl_reset_qos(priv);
3811 priv->qos_data.qos_active = 0;
3812 priv->qos_data.qos_cap.val = 0;
3814 priv->rates_mask = IWL_RATES_MASK;
3815 priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER;
3817 if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
3818 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
3823 ret = iwl_init_channel_map(priv);
3825 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3829 /* Set up txpower settings in driver for all channels */
3830 if (iwl3945_txpower_set_from_eeprom(priv)) {
3832 goto err_free_channel_map;
3835 ret = iwlcore_init_geos(priv);
3837 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3838 goto err_free_channel_map;
3840 iwl3945_init_hw_rates(priv, priv->ieee_rates);
3844 err_free_channel_map:
3845 iwl_free_channel_map(priv);
3850 static int iwl3945_setup_mac(struct iwl_priv *priv)
3853 struct ieee80211_hw *hw = priv->hw;
3855 hw->rate_control_algorithm = "iwl-3945-rs";
3856 hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
3858 /* Tell mac80211 our characteristics */
3859 hw->flags = IEEE80211_HW_SIGNAL_DBM |
3860 IEEE80211_HW_NOISE_DBM |
3861 IEEE80211_HW_SPECTRUM_MGMT |
3862 IEEE80211_HW_SUPPORTS_PS |
3863 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
3865 hw->wiphy->interface_modes =
3866 BIT(NL80211_IFTYPE_STATION) |
3867 BIT(NL80211_IFTYPE_ADHOC);
3869 hw->wiphy->custom_regulatory = true;
3871 /* Firmware does not support this */
3872 hw->wiphy->disable_beacon_hints = true;
3874 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX_3945;
3875 /* we create the 802.11 header and a zero-length SSID element */
3876 hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
3878 /* Default value; 4 EDCA QOS priorities */
3881 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
3882 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3883 &priv->bands[IEEE80211_BAND_2GHZ];
3885 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
3886 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
3887 &priv->bands[IEEE80211_BAND_5GHZ];
3889 ret = ieee80211_register_hw(priv->hw);
3891 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
3894 priv->mac80211_registered = 1;
3899 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3902 struct iwl_priv *priv;
3903 struct ieee80211_hw *hw;
3904 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3905 struct iwl3945_eeprom *eeprom;
3906 unsigned long flags;
3908 /***********************
3909 * 1. Allocating HW data
3910 * ********************/
3912 /* mac80211 allocates memory for this device instance, including
3913 * space for this driver's private structure */
3914 hw = iwl_alloc_all(cfg, &iwl3945_hw_ops);
3916 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
3921 SET_IEEE80211_DEV(hw, &pdev->dev);
3924 * Disabling hardware scan means that mac80211 will perform scans
3925 * "the hard way", rather than using device's scan.
3927 if (iwl3945_mod_params.disable_hw_scan) {
3928 IWL_DEBUG_INFO(priv, "Disabling hw_scan\n");
3929 iwl3945_hw_ops.hw_scan = NULL;
3933 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3935 priv->pci_dev = pdev;
3936 priv->inta_mask = CSR_INI_SET_MASK;
3938 #ifdef CONFIG_IWLWIFI_DEBUG
3939 atomic_set(&priv->restrict_refcnt, 0);
3941 if (iwl_alloc_traffic_mem(priv))
3942 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3944 /***************************
3945 * 2. Initializing PCI bus
3946 * *************************/
3947 if (pci_enable_device(pdev)) {
3949 goto out_ieee80211_free_hw;
3952 pci_set_master(pdev);
3954 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3956 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3958 IWL_WARN(priv, "No suitable DMA available.\n");
3959 goto out_pci_disable_device;
3962 pci_set_drvdata(pdev, priv);
3963 err = pci_request_regions(pdev, DRV_NAME);
3965 goto out_pci_disable_device;
3967 /***********************
3968 * 3. Read REV Register
3969 * ********************/
3970 priv->hw_base = pci_iomap(pdev, 0, 0);
3971 if (!priv->hw_base) {
3973 goto out_pci_release_regions;
3976 IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
3977 (unsigned long long) pci_resource_len(pdev, 0));
3978 IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
3980 /* We disable the RETRY_TIMEOUT register (0x41) to keep
3981 * PCI Tx retries from interfering with C3 CPU state */
3982 pci_write_config_byte(pdev, 0x41, 0x00);
3984 /* this spin lock will be used in apm_ops.init and EEPROM access
3985 * we should init now
3987 spin_lock_init(&priv->reg_lock);
3990 err = priv->cfg->ops->lib->apm_ops.init(priv);
3992 IWL_DEBUG_INFO(priv, "Failed to init the card\n");
3996 /***********************
3998 * ********************/
4000 /* Read the EEPROM */
4001 err = iwl_eeprom_init(priv);
4003 IWL_ERR(priv, "Unable to init EEPROM\n");
4006 /* MAC Address location in EEPROM same for 3945/4965 */
4007 eeprom = (struct iwl3945_eeprom *)priv->eeprom;
4008 memcpy(priv->mac_addr, eeprom->mac_address, ETH_ALEN);
4009 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
4010 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4012 /***********************
4013 * 5. Setup HW Constants
4014 * ********************/
4015 /* Device-specific setup */
4016 if (iwl3945_hw_set_hw_params(priv)) {
4017 IWL_ERR(priv, "failed to set hw settings\n");
4018 goto out_eeprom_free;
4021 /***********************
4023 * ********************/
4025 err = iwl3945_init_drv(priv);
4027 IWL_ERR(priv, "initializing driver failed\n");
4028 goto out_unset_hw_params;
4031 IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
4034 /***********************
4036 * ********************/
4038 spin_lock_irqsave(&priv->lock, flags);
4039 iwl_disable_interrupts(priv);
4040 spin_unlock_irqrestore(&priv->lock, flags);
4042 pci_enable_msi(priv->pci_dev);
4044 err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr,
4045 IRQF_SHARED, DRV_NAME, priv);
4047 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
4048 goto out_disable_msi;
4051 err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4053 IWL_ERR(priv, "failed to create sysfs device attributes\n");
4054 goto out_release_irq;
4057 iwl_set_rxon_channel(priv,
4058 &priv->bands[IEEE80211_BAND_2GHZ].channels[5]);
4059 iwl3945_setup_deferred_work(priv);
4060 iwl3945_setup_rx_handlers(priv);
4062 /*********************************
4063 * 8. Setup and Register mac80211
4064 * *******************************/
4066 iwl_enable_interrupts(priv);
4068 err = iwl3945_setup_mac(priv);
4070 goto out_remove_sysfs;
4072 err = iwl_dbgfs_register(priv, DRV_NAME);
4074 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
4076 /* Start monitoring the killswitch */
4077 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
4083 destroy_workqueue(priv->workqueue);
4084 priv->workqueue = NULL;
4085 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4087 free_irq(priv->pci_dev->irq, priv);
4089 pci_disable_msi(priv->pci_dev);
4090 iwlcore_free_geos(priv);
4091 iwl_free_channel_map(priv);
4092 out_unset_hw_params:
4093 iwl3945_unset_hw_params(priv);
4095 iwl_eeprom_free(priv);
4097 pci_iounmap(pdev, priv->hw_base);
4098 out_pci_release_regions:
4099 pci_release_regions(pdev);
4100 out_pci_disable_device:
4101 pci_set_drvdata(pdev, NULL);
4102 pci_disable_device(pdev);
4103 out_ieee80211_free_hw:
4104 ieee80211_free_hw(priv->hw);
4105 iwl_free_traffic_mem(priv);
4110 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
4112 struct iwl_priv *priv = pci_get_drvdata(pdev);
4113 unsigned long flags;
4118 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
4120 iwl_dbgfs_unregister(priv);
4122 set_bit(STATUS_EXIT_PENDING, &priv->status);
4124 if (priv->mac80211_registered) {
4125 ieee80211_unregister_hw(priv->hw);
4126 priv->mac80211_registered = 0;
4131 /* make sure we flush any pending irq or
4132 * tasklet for the driver
4134 spin_lock_irqsave(&priv->lock, flags);
4135 iwl_disable_interrupts(priv);
4136 spin_unlock_irqrestore(&priv->lock, flags);
4138 iwl_synchronize_irq(priv);
4140 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4142 cancel_delayed_work_sync(&priv->rfkill_poll);
4144 iwl3945_dealloc_ucode_pci(priv);
4147 iwl3945_rx_queue_free(priv, &priv->rxq);
4148 iwl3945_hw_txq_ctx_free(priv);
4150 iwl3945_unset_hw_params(priv);
4151 iwl_clear_stations_table(priv);
4153 /*netif_stop_queue(dev); */
4154 flush_workqueue(priv->workqueue);
4156 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4157 * priv->workqueue... so we can't take down the workqueue
4159 destroy_workqueue(priv->workqueue);
4160 priv->workqueue = NULL;
4161 iwl_free_traffic_mem(priv);
4163 free_irq(pdev->irq, priv);
4164 pci_disable_msi(pdev);
4166 pci_iounmap(pdev, priv->hw_base);
4167 pci_release_regions(pdev);
4168 pci_disable_device(pdev);
4169 pci_set_drvdata(pdev, NULL);
4171 iwl_free_channel_map(priv);
4172 iwlcore_free_geos(priv);
4174 if (priv->ibss_beacon)
4175 dev_kfree_skb(priv->ibss_beacon);
4177 ieee80211_free_hw(priv->hw);
4181 /*****************************************************************************
4183 * driver and module entry point
4185 *****************************************************************************/
4187 static struct pci_driver iwl3945_driver = {
4189 .id_table = iwl3945_hw_card_ids,
4190 .probe = iwl3945_pci_probe,
4191 .remove = __devexit_p(iwl3945_pci_remove),
4193 .suspend = iwl_pci_suspend,
4194 .resume = iwl_pci_resume,
4198 static int __init iwl3945_init(void)
4202 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4203 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4205 ret = iwl3945_rate_control_register();
4207 printk(KERN_ERR DRV_NAME
4208 "Unable to register rate control algorithm: %d\n", ret);
4212 ret = pci_register_driver(&iwl3945_driver);
4214 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
4215 goto error_register;
4221 iwl3945_rate_control_unregister();
4225 static void __exit iwl3945_exit(void)
4227 pci_unregister_driver(&iwl3945_driver);
4228 iwl3945_rate_control_unregister();
4231 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
4233 module_param_named(antenna, iwl3945_mod_params.antenna, int, 0444);
4234 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
4235 module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, 0444);
4236 MODULE_PARM_DESC(swcrypto,
4237 "using software crypto (default 1 [software])\n");
4238 #ifdef CONFIG_IWLWIFI_DEBUG
4239 module_param_named(debug, iwl_debug_level, uint, 0644);
4240 MODULE_PARM_DESC(debug, "debug output mask");
4242 module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan, int, 0444);
4243 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
4244 module_param_named(fw_restart3945, iwl3945_mod_params.restart_fw, int, 0444);
4245 MODULE_PARM_DESC(fw_restart3945, "restart firmware in case of error");
4247 module_exit(iwl3945_exit);
4248 module_init(iwl3945_init);